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Silicon-sulfur polymer, solid electrolyte and solid-state lithium-ion battery

The present disclosure discloses a silicon-sulfur polymer, a solid electrolyte comprising the silicon-sulfur polymer, and a corresponding solid-state lithium-ion battery. The silicon-sulfur polymer of the present disclosure is a polymer compound comprising both an inorganic backbone-chain structure and an organic side-chain structure, and has the characteristics of both the organic polymer and the inorganic polymer as well as many unique properties. Therefore, the solid electrolyte formed by the silicon-sulfur polymer and the solid-state lithium-ion battery thereof have many good characteristics including a good lithium-ion-conduction capability, better thermal endurance, a wider range of operating temperatures, and better thermostability.




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Battery degradation determination device, battery degradation determination method and battery degradation determination system

A battery degradation determination device includes a fitting module configured to fit AC impedance measurement data into an equivalent circuit model including at least one circuit block in which a resistance and a constant phase element are connected in parallel, and to obtain circuit constants in the equivalent circuit model, a P-value saving module configured to save P values being index of the constant phase element obtained by fitting AC impedance measurement data of a reference battery to the equivalent circuit model, and a degradation determination module configured to perform degradation determination for a battery as a determination target based on circuit constants obtained by fitting AC impedance measurement data of the battery as a determination target to the equivalent circuit model with the use of the P values as fixed values, with reference to correlations between degrees of battery degradation and the circuit constants in the equivalent circuit model.




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Sound abating heat sink and motor housing

A centrifuge includes a rotor configured to receive sample containers; a drive shaft operatively coupled to the rotor; and a motor. The motor includes a housing; a plurality of substantially parallel fins integral with the housing, each fin having a free end spaced from the housing, wherein the free ends of the plurality of fins are disposed in a common cylindrical plane; and a plurality of substantially parallel grooves, each groove disposed between a pair of adjacent fins and having a groove depth defined by a distance between the common cylindrical plane and the housing. Wherein the plurality of grooves includes a first multitude of grooves having a common groove depth and a second multitude of grooves having a groove depth that is not the same as the common groove depth, wherein the first and second multitude of grooves are interleaved.




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System and method for a self-charging battery cell

A system and method for a self-charging battery cell are provided in which beta emissions from a Strontium-90 source are obtained by a sensor device and converted into electric energy. In embodiments, a scintillation device is used to intake emissions from a Strontium-90 source, and consequently emit a light or plurality of light flashes. A sensor device, e.g., a photodiode, is utilized to convert the light or plurality of light flashes into electric voltage, current and/or energy.




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Battery charging method and system for hybrid vehicle and the hybrid vehicle using the same

A battery charging method for a hybrid vehicle and the hybrid vehicle using the same are disclosed. The hybrid vehicle includes an engine and a motor as power source and includes the battery in which electrical energy for driving the motor is stored. The method and system may include: determining whether the battery needs to be charged while the vehicle is stopped; transitioning a transmission to a neutral position (N position) when the battery needs to be charged; starting the engine and engaging an engine clutch to connect the engine with the motor so that the motor generates electrical energy via power from the engine. The electrical energy generated by the motor is then stored in the battery accordingly.




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Battery charge/discharge control device, battery charge/discharge control method, and hybrid working machine with battery charge/discharge control device

A battery charge/discharge control device which performs battery charge/discharge control in a working machine with a battery capable of storing electric energy generated by a generator motor coupled to an engine and driving the generator motor or at least one of other electric actuators by the stored electric energy and a controller which controls a distribution of the electric energy among the battery, the generator motor, and the electric actuator, wherein the controller performs the charge/discharge control in which the electric energy of the battery is discharged when the engine is driven and recharging to the battery is permitted on a condition that a state in which an engine speed is equal to or lower than a predetermined engine speed is maintained for a predetermined time after the battery is completely discharged.




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Connecting structure for secondary battery and battery pack including the same

A connecting structure for a secondary battery for electrically connecting a core pack where two or more unit cells are electrically connected and a protection circuit module made of the unit cells of the core pack and a PCB substrate. The connecting structure includes a metal plate having an electrode connecting unit connected to an electrode of each unit cell of the core pack and a circuit connecting unit connected to the protection circuit module; and a circuit terminal unit electrically connected to the circuit connecting unit by being located in a connection hole formed in the PCB substrate of the protection circuit module so that the upper and lower portions of the PCB substrate communicate with each other. The circuit connecting unit is coupled and electrically connected to the circuit terminal unit by means of a connection method which allows selective connection and separation.




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Battery pack dehumidifier with active reactivation system

A battery pack dehumidifier system for controlling the relative humidity within a battery pack enclosure is provided, the dehumidifier system including a desiccant that absorbs/adsorbs water vapor from the battery pack enclosure. The system heats and reactivates the desiccant at predetermined time intervals or when the humidity within the system reaches a preset level, thereby allowing the desiccant to regain its potential for absorbing/adsorbing water vapor.




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Battery assembly with adhesive stop mechanism

A battery assembly provided with an adhesive stop mechanism is disclosed. The battery assembly includes multiple battery cells, a primary retaining frame, a secondary retaining frame, two common electrodes and a bonding layer. The primary and second retaining frames are combined together to constitute accommodation chambers for housing the battery cells. The primary retaining frame includes an outer deck and a shallow deck, wherein the outer deck is formed with adhesive application pores and the shallow deck is formed with stop portions corresponding to the adhesive application pores. The adhesive composition applied through the adhesive application pores is confined by the stop portions and subsequently cured into a bonding layer that firmly holds the battery cells within the accommodation chambers.




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Method and device to measure temperature of a prismatic cell of automotive battery

Apparatuses and methods of use are provided that include a battery cell comprising a flexible resistive thermal device. The resistive thermal device includes a flexible conductive circuit that is positioned on or adjacent to the surface of the battery cell. Resistance measured in the conductive circuit is correlated with a temperature of the battery cell thereby allowing control of a cooling system and/or the charging/discharging rates of the battery cell to be adjusted in response to temperature. Flexibility of the resistive thermal device also accommodates dimensional changes in the battery cell.




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Battery pack with cells of different capacities electrically coupled in parallel

The disclosed embodiments provide a battery pack for use with a portable electronic device. The battery pack includes a first set of cells with different capacities electrically coupled in a parallel configuration. Cells within the first set of cells may also have different thicknesses and/or dimensions. The first set of cells is arranged within the battery pack to facilitate efficient use of space within a portable electronic device. For example, the first set of cells may be arranged to accommodate components in the portable electronic device.




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Cable-type secondary battery and preparation thereof

The present disclosure provides a cable-type secondary battery, comprising: an inner electrode; and a sheet-form laminate of separation layer-outer electrode, spirally wound to surround the outer surface of the inner electrode, the laminate being formed by carrying out compression for the integration of a separation layer for preventing a short circuit, and an outer electrode. According to the present disclosure, the electrodes and the separation layer are compressed and integrated to minimize ununiform spaces between the separation layer and the outer electrode and reduce the thickness of a battery to be prepared, thereby decreasing resistance and improving ionic conductivity within the battery. Also, the separation layer coming into contact with the electrodes absorbs an electrolyte solution to induce the uniform supply of the electrolyte solution into the outer electrode active material layer, thereby enhancing the stability and performances of the cable-type secondary battery.




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Battery pack

A battery pack, which can secure the strength of an outer case, minimize the thickness over the whole outer case and ensure a battery capacity of the battery pack, by forming a portion of a main wall of the outer case with a metal plate. The battery pack includes a core pack, a first case, and a second case. The first case has a periphery including a first resin molding part, and is configured to cover a first surface of the core pack. The second case has a periphery including a second molding part, and is configured to cover a second surface of the core pack. The first and second cases are connected with each other by a weld of the first and second molding parts.




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Rechargeable battery

A rechargeable battery includes an electrode assembly, a case, a cap assembly, and a current collecting plate. The electrode assembly includes an anode, a cathode, and a separator interposed between the anode and the cathode. The case houses the electrode assembly and has an opening and has a closed end. The cap assembly is coupled to the opening of the case, and is electrically connected to the electrode assembly. The current collecting plate is electrically connected to the anode or the cathode, and has a guide portion. The guide portion bends toward the electrode assembly to be in contact with the electrode assembly.




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Lithium rechargeable battery

A lithium rechargeable battery including: a bare cell including an electrode assembly disposed in a pouch, the electrode assembly including two electrodes, a separator, and first and second electrode tabs that extend from the electrodes, through a first side of the bare cell; a protecting circuit board electrically connected to the first and second electrode tabs; a first lead plate connected to the protecting circuit board and the first electrode tab, and a second lead plate connected to the protecting circuit board and the second electrode tab. The protecting circuit board is provided on a second side of the bare cell, which is adjacent to the first side. The first and second lead plates are bent to extend along the first and second sides of the pouch.




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Cap assembly and rectangular type secondary battery having the cap assembly

In a cap assembly and a rectangular type secondary battery having the cap assembly, the cap assembly includes a cap plate made of a metallic or nonmetallic material, a hollow, low-melting point glass metal tube inserted into a hole formed in the cap plate, and a metallic or nonmetallic pin inserted into the hollow glass metal tube, wherein the cap plate, the glass metal tube and the pin are atomically bonded with one another at their contact areas by high-temperature heating.




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Electrode structure and battery device manufacturing method

An electrode is provided with a metal terminal extending from a battery module main body, a bolt which has an expanded section configuring a retaining section at a rear end portion and penetrates the metal terminal upward, and an insulating body which insulates the metal terminal and the battery module case one from the other. The insulating body is provided with a drop preventing section which abuts at least a lower surface of the expanded section of the bolt and prevents the bolt from dropping from the metal terminal.




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Battery pack

In the present invention, there is provided a battery pack including first to fifth terminal portions sequentially arrayed at one side surface of a housing, wherein the first terminal portion formed on one end side of the one side surface is a positive electrode terminal, the fifth terminal portion formed on the other end side is a negative electrode terminal, the fourth terminal portion formed adjacently to the fifth terminal portion is an ID terminal, and the fourth terminal portion and the fifth terminal portion are proximate to each other; and a guide portion for guiding the loading and unloading of the battery pack into and from a battery mounting portion is formed substantially in the center of the one side surface in array with the terminal portions, and the third terminal portion arranged centrally is formed at a position deviated toward the one end side or the other end side.




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Alkaline primary battery

An alkaline primary battery includes: a positive electrode 2 containing manganese dioxide; an alkaline electrolyte containing zinc oxide; a gelled negative electrode 3 containing zinc alloy particles, the alkaline electrolyte, and a gelling agent; and a negative electrode current collector 6 inserted in the gelled negative electrode. The gelled negative electrode 3 has a predetermined malleability such that when 4.0 g of the gelled negative electrode 3 formed into a cylindrical shape with a diameter of 15 mm is extended with 200 g of a load through 10 g of a flat plate, and then an upper surface of the extended gelled negative electrode 3 is approximated to a circle, this circle has a diameter ranging from 24 mm to 36 mm, both inclusive.




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Energy storage composite particle, battery negative electrode material and battery

An energy storage composite particle is provided, which includes a carbon film, a conductive carbon component, an energy storage grain, and a conductive carbon fiber. The carbon film surrounds a space. The conductive carbon component and the energy storage grain are disposed in the space. The conductive carbon fiber is electrically connected to the conductive carbon component, the energy storage grain, and the carbon film, and the conductive carbon fiber extends from the inside of the space to the outside of the space. The energy storage composite particle has a high gravimetric capacity, a high coulomb efficiency, and a long cycle life. Furthermore, a battery negative electrode material and a battery using the energy storage composite particle are also provided.




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Positive electrode active material particles for lithium ion secondary batteries, positive electrode using the same, and lithium ion secondary battery

Positive electrode active material particles for lithium ion secondary batteries include: a core particle including a first olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li; and a shell layer attached to the surface of the core particle. The shell layer includes a second olivine-structured, lithium-containing phosphate compound which includes Fe and/or Mn and Li. At least the core particle includes a phosphorous compound represented by the formula (1): MemPnOp, where Me is Fe and/or Mn, 0




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Electrode protection in both aqueous and non-aqueous electrochemical cells, including rechargeable lithium batteries

Electrode protection in electrochemical cells, and more specifically, electrode protection in both aqueous and non-aqueous electrochemical cells, including rechargeable lithium batteries, are presented. In one embodiment, an electrochemical cell includes an anode comprising lithium and a multi-layered structure positioned between the anode and an electrolyte of the cell. A multi-layered structure can include at least a first single-ion conductive material layer, and at least a first polymeric layer positioned between the anode and the single-ion conductive material. The invention also can provide an electrode stabilization layer positioned within the electrode to control depletion and re-plating of electrode material upon charge and discharge of a battery. Advantageously, electrochemical cells comprising combinations of structures described herein are not only compatible with environments that are typically unsuitable for lithium, but the cells may be also capable of displaying long cycle life, high lithium cycling efficiency, and high energy density.




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Composite material tape for lithium secondary battery and lithium secondary battery using the same

A composite material tape and a lithium secondary battery using the same are provided. The composite material tape includes an organic base and at least one inorganic element dispersed within the organic base. The composite material tapes of the present invention exhibit improved Insulative and heat-resistant characteristics.




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Lithium battery

A lithium battery including: a positive electrode including an overlithiated lithium transition metal oxide having a layered structure; a negative electrode including a silicon-based negative active material; and an electrolyte between the positive electrode and the negative electrode, the electrolyte including an electrolytic solution including a fluorinated ether solvent in an amount of 3 vol % or more based on the total volume of the electrolytic solution.




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Battery module

A battery module including: a plurality of rechargeable batteries including a first terminal and a second terminal; and a connecting member electrically connecting rechargeable batteries of the plurality of rechargeable batteries through the first and second terminals, the connecting member including an access protrusion protruded toward the first terminal, and the first terminal includes a pressurizer configured to press the access protrusion toward a part of the first terminal.




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Rechargeable battery

In a rechargeable battery, a case is combined with an upper surface of a bare cell by being fixed to a lead plate electrically coupling a protection circuit board of a protection circuit module to the bare cell. Alternatively, the case is combined with the bare cell by being fixed to the protection circuit board so as not to be separated from the bare cell, thereby improving the reliability of the products.




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Non-aqueous electrolyte and lithium secondary battery using the same

The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising an ester-based compound having a branched-chain alkyl group and an ester-based compound having a straight-chain alkyl group; and a lithium secondary battery using the same.




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Batch execution of system calls in an operating system

A system and a method are disclosed for batch execution of system calls in an operating system. In one implementation, a processing device configures a system call batching buffer table in a user space of an operating system, the system call batching buffer table including a plurality of system call units, associates a system call number with the system call batching buffer table, and issues a trap instruction to a kernel of the operating system to execute at least one of the plurality of system call units, the trap instruction including the system call number.




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Duct to influence air cooling distribution to battery module and DC/DC module

A vehicle is provided including a battery module, a DC/DC converter module portioned from the battery module, a duct, one blower, and a jumper duct. The battery module includes inlet and outlet ports. The DC/DC converter module includes inlet and outlet ports. A duct is arranged to direct cooling air into each of the inlet ports. The blower is arranged to draw cooling air from the duct, through the modules, and out the outlet ports. The jumper duct is arranged up stream of the blower with the converter outlet port, and configured to reduce an effective cross sectional area of the converter outlet port to define a flow rate of the cooling air into the battery inlet port.




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110 CFM bath fan with and without light

Apparatus, systems and methods of 110 (one hundred ten) CFM (cubic feet per minute) generating ventilation fans for bathrooms with grill covers and with or without lights in the grill covers. Spring clip type washers can attach the grill covers to the housings. Suspension brackets directly attached to outer side walls of the housing can support the housings. One suspension bracket can be mounted on a bottom wall of the housing and another suspension bracket of equal length can be mounted on a side wall of the housing that is oriented perpendicular to the bottom wall. Bent flanges on the suspension brackets can be on opposite ends of the respective brackets. A lens cover can cover a light box that holds light sources centrally located in the grill cover. The grill cover can include vent openings that allow incoming air to bypass the light sources that can be located inside of the light box.




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Ornament with enclosed water-proof battery capsule

A decorative ornament capable of being completely illuminated about its surface including a hollow shell comprising a water-proof battery capsule is described. When the ornament is on display, the battery capsule is stored in a hollow shell of the ornament, in a manner such that only the removable lid of the battery capsule is visibly exposed. A battery pack, comprising one or more batteries, provides the power to illuminate the ornament and is enclosed within the battery capsule. The ornament surface is made using a water-resistant material. The battery capsule is made of a similar water-proof material and is sealed so as to prevent the battery pack from malfunctioning during various weather conditions. The battery pack's configuration enables the ornament to comprise a plurality of lighting modes, including full-on, blinking-on, and timer. The ornament can be displayed indoors or outdoors, and may be used year after year.




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Composition and process for preparing NIR shielding masterbatch and NIR shielding masterbatch and application thereof

Disclosed herein is a method for preparing a near infrared shielding fiber. The method includes the steps of preparing and compounding a composition, then pelletizing the compounded composition to obtain the near-infrared shielding masterbatch, and melt spinning the near-infrared shielding masterbatch into the near-infrared shielding fiber. The composition includes at least one metallic ionic compound powder in an amount of about 1-25 wt %, a cross-linking agent in an amount of about 0.1-2 wt %, a thermoplastic polymer in an amount of about 67-98.7 wt %, a cross-linking initiator in an amount of about 0.1-1 wt %, and a dispersing agent in an amount of about 0.1-2 wt %.




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Connection terminal of shunt resistor, and battery state detection device

It is an object to provide a configuration with an enhanced sensing accuracy, in which a shunt resistance main body and a terminal member are formed as separate pieces. A shunt resistor includes a resistance main body and a terminal member (21) that is electrically connected to the resistance main body. The terminal member (21) includes a resistance connection portion (23) to be in contact with the resistance main body, and a circuit connection portion (24) provided so as to extend from the resistance connection portion (23). The circuit connection portion (24) is divided into two parts by a slit (27) being formed therein. The slit (27) is formed up to a part of the resistance connection portion (23).




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Rotary jig of battery cell and process of welding for battery cell using the same

Disclosed herein is a rotary jig for battery cells to successively manufacture battery cells having different sizes including a main body configured to have a hexahedral structure having a rotary rod mounted at a lower end thereof, the main body being provided at sides thereof with mounting frames having sizes corresponding to sizes of battery cells so that the battery cells can be uprightly mounted in the mounting frames in a state in which electrode terminals of the battery cells are exposed upward, a die disposed at a lower end of the main body, the die connected to the rotary rod so that the die can be rotated manually or by a rotary motor, and support members formed at the die to support the mounting frames of the main body and the battery cells mounted in the mounting frames, wherein the rotary rod is rotated so that resistance welding is performed with respect to a portion of one of battery cells to be welded using a welding rod located above the battery cell in a state in which the battery cells are mounted to the corresponding sides of the main body.




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Cardboard sheet batch division device, cardboard sheet counter ejector, and method for dividing cardboard sheet

The present invention is a cardboard sheet batch division device for dividing batches, disposed on the downstream side of a batch-forming device for separating loaded cardboard sheets and forming batches of a predetermined sheet count. The cardboard sheet batch division device for dividing batches comprises: a transfer conveyor for transferring batches formed by the batch-forming device in a predetermined transfer direction; and batch division means furnished with two separating members respectively contacting the leading edge portion and the trailing edge portion of a batch on the transfer conveyor, for dividing the batch into two sub-batches, upper and lower, by moving the two separating members relative to one another in a direction parallel to the predetermined transfer direction.




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Active drain plug for high voltage battery applications

A drain plug assembly that has particular application for sealing a drain hole in a high voltage battery compartment on a vehicle. The plug assembly includes a plug that inserted into the drain hole. The plug assembly further includes a return spring coupled to the plug and causing the plug to be biased into the drain hole. The plug assembly also includes at least one shape memory alloy device coupled to the plug and a support structure. The SMA device receives an electrical current that causes the device to contract and move the plug out of the drain hole against the bias of the return spring.




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Partial adiabatic conversion

Operation of a charge pump is controlled to optimize power conversion efficiency by using an adiabatic mode with some operating characteristics and a non-adiabatic mode with other characteristics. The control is implemented by controlling a configurable circuit at the output of the charge pump.




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Production process for composite oxide, positive-electrode active material for lithium-ion secondary battery and lithium-ion secondary battery

A production process for composite oxide expressed by a compositional formula: LiMn1-xAxO2, where “A” is one or more kinds of metallic elements other than Mn; and 0≦“x”




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Carbon catalyst, method of producing same, and electrode and battery each utilizing same

Provided is a method of producing a carbon catalyst having an improved activity. The method of producing carbon catalyst including a carbonization step of carbonizing raw materials containing an organic compound as a carbon source, a metal, and an electrically conductive carbon material to produce a carbonized material; a metal impregnation step of impregnating the carbonized material with a metal; and a heat treatment step of subjecting the carbonized material impregnated with the metal to a heat treatment.




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Battery-mounting structure

According to one embodiment, a battery-mounting structure includes a first housing, a second housing including a display device including a display screen, a hinge configured to attach the second housing to the first housing rotatably between a first position in which the display screen is covered with the first housing and a second position in which the display screen is exposed, and a battery configured to be attached to the first housing and including a recess configured to accommodate a part of the second housing in the second position.




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50 CFM bath fans with lens cover and flaps/ears that allow housings to be mounted to joists

Apparatus, systems and methods of 50 CFM exhaust and ventilation fans for bathrooms with grill covers having removable light lens covers, and flaps/ears that allow the housings to mount directly to joists and/or other structural members inside of a ceiling or inside of a wall. The housing can include a mounting plate having a motor with attached impeller thereon, wherein the mounting plate with motor and attached impeller and electrical connectors can be removed as a single unit from the housing for accessing and inspecting interior wire connections during inspection and for ease in replacing parts such as burned out motors overtime.




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System and method for controlling output of a battery pack

Systems and methods for controlling the output of a battery pack are disclosed. In one example, a battery pack contactor is opened in response to battery pack current. The system and method may reduce battery pack degradation and increase system flexibility.




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Battery system for vehicle

A battery system for a vehicle is provided with discharge circuits (R1, 129A through 129D, 128A through 128D) that discharge battery cells (BC1 through BC4) via measurement lines of those battery cells (BC1 through BC4). A control circuit transmits to an integrated circuit (3A) a first discharge command that causes discharge of the odd numbered battery cells (BC1 and BC3) of a cell group (GB1), a first transmission command that causes transmission to the control circuit of the terminal voltages of only the odd numbered battery cells (BC1 and BC3) measured during execution of the first discharge command, a second discharge command that causes discharge of the even numbered battery cells (BC2 and BC4) of the cell group (GB1), and a second transmission command that causes transmission to the control circuit of the terminal voltages of only the even numbered battery cells (BC2 and BC4) measured during execution of the second discharge command; and, based on the these various terminal voltages transmitted from the integrated circuit (3A), the control circuit diagnoses abnormalities in the system that includes the battery cells, the measurement lines, and the discharge circuits.




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Assembled battery charging method, charging control circuit, and power supply system

A method for charging an assembled battery including series circuits connected in parallel, each of the series circuits including series-connected lead storage batteries, using a single charger is provided. The method includes: a first step of obtaining a first index value, corresponding to a resistance value of a first series circuit with a correlative relationship, the first series circuit having a lowest resistance value; a second step of obtaining a second index value corresponding to a resistance value of a second series circuit with a correlative relationship, the second series circuit having a highest resistance value; a third step of performing normal charging, in which the assembled battery is charged with a first amount of charge corresponding to the first index value; and a fourth step of performing refresh charging, in which the assembled battery is charged with a second amount of charge corresponding to the second index value.




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State based full and empty control for rechargeable batteries

State based full and empty control for rechargeable batteries that will assure a uniform battery empty condition, even in the presence of a load on the battery. A fuel gauge provides a prediction of the open circuit voltage of the battery, and when the predicted open circuit voltage of the battery reaches the predetermined open circuit voltage of an empty battery, the load is terminated, after which the battery will relax back to the predetermined open circuit voltage of an empty battery. A similar technique is disclosed for battery charging, allowing faster battery charging without overcharging. Preferably an RC battery model is used as the fuel gauge to provide the prediction, but as an alternative, a coulomb counter may be used to provide the prediction, with error correction between successive charge discharge cycles.




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Control system for a flow cell battery

A controller for controlling a flow cell battery system is provided. The controller operates the flow cell battery system in a plurality of states including a plating state, a charging state and a discharge state.




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Battery pack and method of controlling the same

A battery pack, and a method of controlling the battery pack are disclosed. The battery pack detects consumption current when a load is not turned on, and shuts off power when a load is turned off or in stand-by mode, thereby preventing consumption current of the load from flowing.




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Battery cell temperature detection

Temperature characteristics of battery cells are detected. In accordance with one or more embodiments, an intercept frequency is detected for each battery cell, at which frequency an imaginary part of a plot of impedance values of the battery cell exhibits a zero crossing. The impedance values correspond to current injected into the cell. A temperature of the cell is determined based upon the detected intercept frequency for the cell and stored data that models operation of the cell. Various approaches are implemented with different types of circuits coupled to detect the impedance values of the respective cells.




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Battery protecting circuit, battery protecting device, and battery pack

A disclosed battery protecting circuit includes a battery protecting IC powered by a voltage of a secondary battery; another battery protecting IC powered by a voltage of another secondary battery connected to the secondary battery in series; and a constant voltage output unit which receives a maximum voltage obtained by adding voltages of the secondary battery and the other secondary battery in series and outputs a constant voltage upon receipt of a control signal from an output terminal of the battery protecting IC or the other battery protecting IC.




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Method and circuitry to calculate the state of charge of a battery/cell

The present inventions, in one aspect, are directed to techniques and/or circuitry to adapt the charging of a battery using data which is representative of an overpotential or relaxation time (full or partial) of the battery. In another aspect the present inventions are directed to techniques and/or circuitry to calculate data which is representative of an overpotential or relaxation time (full or partial) of the battery. In yet another aspect the present inventions are directed to techniques and/or circuitry to calculate data which is representative of a state of charge of the battery using an overpotential or relaxation time (full or partial) of the battery.