Abstract: The present invention discloses a portable labor-saving battery device for a electric vehicle, said battery device capable of providing power when installed on said electric vehicle. User is able to disassemble said battery device, drag and recharge said battery independently without much effort. Furthermore, said battery device is used as shopping cart to provide more functionality. Said battery device mainly comprises a battery set having a socket for recharge and a contact on a bottom of said battery set for connecting to said electric vehicle, a cap implemented on a bottom of a upper surface of said battery set, said cap lying next to said upper surface of said battery set when folded up and providing a load-bearing space when bent down. A wheel set is implemented on a bottom of a lower surface of said battery set for providing mobility.

Abstract: A discharge electrode bar 100 includes a case 101. In the case 101, an air unit 102 and discharge electrode assemblies 103 are disposed in its lower region, and a high voltage unit 104 and a control unit 105 including a power supply circuit, a display circuit and a CPU, for example, are disposed in its upper region. The case 101 consists of left and right divisional case sections which can be detached from each other.

Abstract: Testing apparatus senses the time-varying electrical response of an electrochemical cell/battery to time-varying electrical excitation. The cell/battery may, or may not, be in service. Computation circuitry responsive to the time-varying electrical response evaluates elements of a unique circuit model representation of the cell/battery. Performance parameters and physical parameters are computed from these element values. Computed performance parameters include, but are not limited to, “total storage capacity”, “absolute stored charge”, “state-of-charge”, “absolute cranking current”, “fully charged cranking current”, and “state-of-health”.

Abstract: In a power feeding apparatus having pickup coils L1 and L2, a rectifier circuit 4 and output terminals U and V, the relays R1 and R2 are connected between the output side terminals of the rectifier circuit 4 and the output terminals U and V. Whereas a protective circuit (switching control circuit) 6, which is connected to the pickup coils L1 and L2 and the relay coils r1 and r2 to obtain the electric power from the output side terminals of the rectifier circuit 4 in order to carry out ON/OFF control of the relays R1 and R2 corresponding to the voltage at the both ends of the pickup coils L1 and L2, is provide. The power feeding apparatus enables to prevent an overcurrent from flowing through a load, to prevent the circuit elements from being destroyed or burnt out due to an overcurrent generated in the pickup coils or an overvoltage generated in a resonance capacitor, to indicate an occurrence of an abnormality and to control the electric power supply by means of a remote control.

Abstract: This invention is an adapter that fits on a cellular phone that allows a plurality of batteries to be connected in parallel. More specifically, this invention is an adapter that allows a standard cellular telephone battery to be fitted on a phone in the same fashion that an extended capacity or “aux” battery would. The adapter has an aperture for accommodating a battery, as well as electrical connections which couple the battery contacts to the phone's electrical contacts. An end user can use this invention to power a phone. Additionally the device can be used in conjunction with a battery charger to charge a spare battery.

Abstract: A battery charging circuit particularly adapted to recharging NiMh batteries utilizes a thermistor to develop a control voltage corresponding to the temperature of the battery being charged and compares such voltage to an accurately measured battery terminal voltage. At a preset condition of a combination of the two voltage readings, the charging circuit converts from charging at a relatively high and fast charging rate to a relatively slow rate corresponding to a trickle current passing around a SCR through which the fast charging current normally flows. The circuit components are selected such that the battery achieves a charge of substantially 95% capacity before switching to the relatively slow rate and enables display of a state of charge indicating that the 95% capacity charge has been achieved and without any “popping” or cyclic ON-OFF effect.

Abstract: A power charger which charges and provide conditioned power from at least one of a super-capacitor and a secondary battery. The type of energy device is user selectable, such that the user can select super-capacitors because of their much longer charge/discharge life and low-maintenance requirements, while another user can chose secondary batteries because of their higher stored energy, while a third user may select a combination of the two.

Abstract: A charge control device for providing a constant charge voltage with temperature compensation to a battery being charged by a constant current charger is provided. The device includes a first electrical connector that couples to a positive terminal of the battery and a second electrical connector that couples to a negative terminal of the battery. A current bypass circuit electrically couples to the positive and negative terminals of the battery through respective first and second electrical connectors. The current bypass circuit includes a bypass path for a portion of a charge current from the constant current charger to flow, thereby maintaining a substantially constant voltage across the battery terminals at a particular temperature.

Abstract: A power module including a self arc-extinguishing type semiconductor such as an IGBT and having a function to protect the semiconductor, i.e., to protect the IGBT against a short-circuit current. Even the IGBT having a collector-emitter saturation voltage VCE (sat) set low can be protected against the short-circuit current, by charging a collector-gate junction capacitor (13) quickly, when a sense current IS to flow through a current sense exceeds a set value, to raise a collector voltage VCE quickly thereby to prevent a collector current IC from increasing, by keeping a gate voltage VGE of the IGBT (12) at a voltage rather higher than a threshold voltage, and by turning OFF the IGBT (12) after a predetermined time.

Abstract: A small battery box, in which arrangement of cells can be easily changed, for suppressing nonuniformity in temperature distribution between the cells. The box has a container having upper, lower, front, rear, and side portions which can be disassembled; a battery holder having members which are detachably connected in a manner such that central axes of the cells are parallel to a direction along which the side portions face each other and the cells are arranged in a zig-zag matrix form; a shielding member, near a coolant supply opening in the front portion, for changing the flow direction of the coolant and for preventing the coolant from directly blowing onto the cells; and a control member, near a coolant discharge opening in the rear portion, for changing the coolant flow direction in a manner such that the coolant flows towards the rear side of each cell near the discharge opening.

Abstract: A voltage equalizing apparatus for battery devices includes a core, a plurality of first battery devices interconnected in series with each other, each consisting of one or more cells, a plurality of secondary windings magnetically connected with each other through the core, a plurality of first switching devices, each connected to one of the plurality of secondary windings and one of the plurality of first battery devices to constitute a first closed circuit, one or more second battery devices provided separately from said plurality of first battery devices interconnected in series or a second battery device provided by rendering the whole of said plurality of first battery devices interconnected in series one battery device, a primary winding magnetically connected with the plurality of secondary windings through the core, and a second switching device connected in series with the second battery device and the primary winding to constitute a second closed circuit.

Abstract: A new battery charging, discharging, and protection circuit is achieved. The circuit comprises, first, a FET switch having gate, source, drain, and bulk. The FET switch may comprise either a NMOS device or a PMOS device. The source is coupled to a load terminal, and the drain is coupled to a battery terminal. Second, a means of controlling the FET switch gate and the bulk is included. The FET switch gate voltage determines the OFF and ON state of said FET switch. The bulk is switchably coupled between the battery terminal and the load terminal. A cascaded version is disclosed.

Abstract: A method of charging a battery from a power source is provided. The method includes providing a charge circuit in series with the battery and the power source. A charging current flowing to the battery and a voltage across the charge circuit are sensed. The power dissipated in the charge circuit is computed based on the charging current and the voltage across the charge circuit. During a first operating mode, the charging current is controlled so that the power dissipated in the charge circuit is about a predetermined maximum dissipation. During a second operating mode, the charging current is limited to a predetermined current level. During a third operating mode, the charging current is controlled so that the battery voltage is about a predetermined voltage level.

Abstract: A cellular phone charger having not only a charging function of charging a cellular phone but also a data backup function of backing up various data stored in the cellular phone and writing backup data to the cellular phone. The charger is equipped with a telephone memory control unit having a memory for storing various data stored in a cellular phone, a charging control unit for controlling charging of the cellular phone, and a voltage conversion unit for converting an input voltage that is supplied from a home power line or the like into drive voltages for the telephone memory control unit and the charging control unit.

Abstract: A power charge system is provided for charging a plurality of portable electric devices. Each portable electric device has a charging port for receiving an operating voltage of the portable device. The power charge system includes a plurality of transformers for converting a plurality of different input voltages into a direct current (DC) standard voltage, and a plurality of converters for converting the standard voltage into the operating voltage of the plurality of portable electric devices. When a portable electric device needs to be charged, a converter corresponding to the portable electric device is capable of being electrically connected to any one of the transformers to receive the standard voltage from the transformer so as to charge the portable electric device.

Abstract: A rechargeable battery which may be used with most presently available hearing aids (or other appliances) with no modification to the existing hearing aid is needed in order to use the described wireless charging system. The battery may be known a “Dynamic battery” as the battery is actively charged by means of an inductor circuit built into the battery housing itself or added onto the battery. The hearing aid may simply be placed within the charger housing (or cradle) to charge the battery. No electrical connection by either wires or electrical contacts is needed to recharge the battery, which is located inside the hearing aid housing. Moreover, the battery need not be removed from the hearing aid (or other appliance).

Abstract: A method and apparatus for controlling the charge and discharge currents in a battery (2) as a function of temperature. When a battery (2) is charged or discharged in an environment that approaches its design operating temperature extreme, the currents are reduced to limit self-heating of the battery and thus extend the useful operating environment temperature range. A temperature sensor (18) is coupled to a controller (6) to sense the battery (2) temperature. The temperature information is used to set a suitable charging or discharging current (8).

Abstract: The invention provides a charging rate adjusting circuit for a cell combination 1 comprising cell modules 11 each comprising one or a plurality of cells and connected in series and adapted to uniformize the cell modules 11 in charging rate. The adjusting circuit comprises a pair of discharge lines 12, 13 extending from opposite electrodes of each cell module 11, a discharge resistor 2 and an on-off switch 3 provided between the discharge lines 12, 13, a timer circuit 4 comprising a CR circuit for feeding a control signal to a gate of the on-off switch 3, and a photocoupler 5 for initiating the circuit 4 into operation in response to a discharge command.

Abstract: When starting charging of an internal battery as a result of connection of an external power source by an AC adapter, a charging control unit sets a first charging voltage at which the charging capacity of the internal battery is maximized. When starting the charging from recognition of reduced capacity of the internal battery due to its self-discharge in desk-top use where the AC adapter is in connection at all times, the charging control unit sets a second charging voltage lower than the first charging voltage to prevent the battery from degrading.

Abstract: A system of cordless power tools includes a cordless power tool adapted to removably receive a rechargeable battery pack. The system further includes a battery pack charger and a converter for converting AC electricity to DC electricity. A battery pack interface block is captured between clam shell halves of a battery pack housing and includes a plurality of male blade terminals. The male blade terminals are received within recessed female terminals of a tool terminal block and similarly received by recessed female terminals of the charger. The tool terminal block further includes a pair of male terminals which engage recessed female terminals of the converter.