Abstract: Interchangeable battery interface apparatus and modular battery systems employing interchangeable battery adapter apparatus are disclosed. Embodiments may be used for adapting tools, instruments, and/or other devices to use different rechargeable battery types on hosts with different battery interface geometries.

Abstract: A bidirectional charging system for an electric vehicle including a bidirectional terminal connected to the electrical network, a cable for connection to an electric vehicle, a control panel accessible from the terminal and a means of communication to the control system of the electrical network, the vehicle includes a bidirectional charger, said bidirectional charger allows the transfer of electrical energy from the terminal to the battery of the vehicle and vice versa, wherein the user of said vehicle can specify the minimum level of charge of the battery through the terminal of the control panel.

Abstract: A method includes receiving an indication of a charging current received at an on-board charging circuit of a vehicle from a source having a charging voltage. The on-board charging circuit includes a multi-phase traction motor, an inverter electrically coupled to the multi-phase traction motor and including an upper set of switching elements and a lower set of switching elements, and an energy storage device (ESD) electrically coupled to the inverter and having a storage voltage. The method includes determining whether the charging voltage is greater than or equal to the storage voltage. When the charging voltage is greater than or equal to the storage voltage, the method includes instructing at least one switching element in the upper set to operate in an on state and all of the switching elements in the lower set in an off state to cause fast charging of the ESD using the charging current.

Abstract: Bidirectional electric vehicle (EV) chargers for Combined Charging system (CCS) compatible EVs implementing alternating current (AC) charging for an EV and direct current (DC) discharging of the EV for providing backup power are disclosed. In one embodiment, a bidirectional EV charger includes a power input interface, a power output interface, and an EV charging interface configured to be electrically coupled with an EV charging port of an EV. The bidirectional EV charger further includes EV charging circuitry electrically coupled between with the power input interface and the EV charging interface; EV discharging circuitry electrically coupled between with the EV charging interface and the power output interface; and a controller electrically coupled with the EV charging circuitry and the EV discharging circuitry. The controller is configured for operating the bidirectional EV charger in a manner compliant to at least one version of the International Electrotechnical Commission (IEC) 62196 standard.

Abstract: The invention discloses method and apparatus for dynamic management and control of a lithium battery energy storage system and an electronic device. A battery management system (BMS) is configured to read a present operation data stream of each cell. A diagnosis apparatus is configured to extract a key battery parameter of said each cell from the present operation data stream and consistency thereof, compare the key battery parameter with historical data to determine whether a battery module fails, generate a control parameter according to a diagnosis result, and transmit the present operation data stream to an intelligent gateway and the control parameter to the BMS and an energy management system (EMS), to cause the EMS to dynamically change a charging/discharging control parameter for the battery energy storage system according to a present state of the battery energy storage system.

Abstract: A series-parallel switching method and apparatus, a power conversion circuit, and an electronic device are provided. The power conversion circuit includes a control unit and two power conversion modules. The two power conversion modules are connected in series or connected in parallel. Either of the power conversion modules includes output terminals and first switch branches, where the first switch branches are connected to the output terminals, and the output terminals are configured to connect to a load. The first switch branches are connected to the control unit, and the first switch branches are configured to switch an operating state according to a control signal output by the control unit, to provide an energy discharge loop when the two power conversion modules are switched from a parallel connection to a series connection, where the operating state includes a stopping state and a running state.

Abstract: Cell selection circuit is provided between n cells connected in series, where n is an integer of 2 or more, and inductor, and is provided at both ends of the selected cell and both ends of inductor can be conductive. Clamp circuit includes at least one clamp switch for forming a closed loop including inductor in a state where cell selection circuit does not select any cells. Current detection circuit detects the value of the current flowing through inductor. Low-pass filter band-limits the detection value. Overcurrent detection circuit activates the protection of inductor when the band-limited detection value exceeds the threshold.

Abstract: A power module adapted to a computer system is provided in the disclosure. The power module includes three batteries, a first voltage output terminal, a second voltage output terminal, a third voltage output terminal, and a charging/discharging control unit. The charging/discharging control unit determines a quantity of serially connected batteries based on a load signal of the computer system, to supply a first voltage to the first voltage output terminal, a second voltage to the second voltage output terminal, or a third voltage to the third voltage output terminal. The first voltage, the second voltage, and the third voltage correspond to different quantities of batteries. The disclosure further provides a power supply method.

Abstract: An operation circuit and a chip pertaining to the field of integrated circuit design technology are disclosed by the present application. The circuit includes a capacitor charging/discharging module and an error amplification module electrically connected to the capacitor charging/discharging module. The capacitor charging/discharging module is configured to receive a first signal and a third signal that are external to the capacitor charging/discharging module and to output a feedback signal. The error amplification module is configured to receive the feedback signal and a second signal that is external to error amplification module and to output, based on the received feedback and second signals, a target signal to the capacitor charging/discharging module. In a steady state, values of the target, first, second and third signals satisfy a predefined mathematical relationship.

Abstract: The present application provides a battery power supply device and a battery power supply system. The battery power supply device includes a control module, a DC/DC conversion module and a battery. The DC/DC conversion module includes N DC/DC converters connected in series or in parallel. When the battery power is constant, more output current can be obtained when the N DC/DC converters are in parallel, and more output voltage can be obtained when the N DC/DC converters are in series. Embodiments enable a battery power supply device or system to meet voltage requirements of different loads and improve applicability of a battery.

Abstract: A battery charging system includes a buck switching converter configured to operate in either a buck mode or a boost mode depending on a system reconfiguration, a linear charger having a first terminal and a second terminal, wherein at least one terminal of the first terminal and the second terminal of the linear charger is used for the system reconfiguration, and a switched capacitor converter configured to operate in either a 2:1 charge pump mode or a 1:2 reverse charge pump mode depending on the system reconfiguration.

Abstract: A storage battery management device includes a control unit. The control unit obtains a current value of a current flowing through a storage battery, a temperature of the storage battery, and a charging rate of the storage battery during a target period. The control unit determines an operation mode of the storage battery during the target period on the basis of the current value and the charging rate. The control unit estimates a degree of degradation of the storage battery during the target period on the basis of the operation mode and the temperature.

Abstract: An embodiment of this application provides an energy storage system and an energy storage system control method. The energy storage system includes N battery clusters and N-X first conversion units, where N is a positive integer greater than 1 and X is a positive integer less than N. A first side of each of N-X first conversion units is connected in series to a power transmission circuit of one of N-X first battery clusters among the N battery clusters, so as to combine with a corresponding first battery cluster to form a series branch circuit. The N-X series branch circuits are connected in parallel to X second battery clusters in the N battery clusters.

Abstract: A reconfigurable battery system is disclosed. The reconfigurable battery system comprises a reconfigurable battery cell array, a controller, and a bus switch. The battery cell array is configured to operate in a first discharge mode, a second discharge mode, or a charge mode. The battery cell array includes a plurality of battery cells arranged as at least a first column of battery cells between a second battery terminal and a first battery terminal and a switch between each battery cell within the first column of battery cells. The bus switch is in signal communication with the battery cell array at the first battery terminal and is configured to select between electrically connecting the first battery terminal to a normal voltage bus or a high-voltage bus.

Abstract: The present disclosure is directed to charging a battery pack by measuring an electrical impedance value of a battery pack by applying a sinusoidal AC excitation signal to a plurality of battery cells of the battery pack, measuring a total impedance value of the battery pack, obtaining a chemical impedance value of the battery pack based on the electrical impedance value and the total impedance value, and adjusting a charge current applied to the battery pack based on the chemical impedance value of the battery pack.

Abstract: The present invention relates to a method and a device for adjusting the position of coils for adaptive coupling in a wireless power transmission system. A wireless power transmission system, according to the present invention, comprises: a wireless power transmission device having a primary coil for generating a magnetic field and transmitting wireless power; and a wireless power reception device having a secondary coil for receiving the wireless power by being coupled to the primary coil, wherein the wireless power transmission device sequentially emits search pings while moving the primary coil, receives a signal strength packet that corresponds to each search ping, and moves the primary coil to a target position in which the coupling degree of the primary coil and secondary coil is equal to or higher than a fixed threshold value or is relatively the highest.

Abstract: A device includes an AC impedance circuit to apply an AC excitation signal to a set of battery cells of a battery pack. The device includes a controller to determine a battery pack identification (ID) value from a battery pack identification (ID) circuit of the battery pack, calculate an impedance value of the battery pack based on the AC excitation signal, identify a maximum charging rate to charge the battery pack using the battery pack ID value of the battery pack and the impedance value of the battery pack, where the battery pack is one of at least two battery packs having a same battery pack ID value with different maximum charging rates, and set a charging rate to charge the battery pack using the maximum charging rate.

Abstract: There is fear that some battery cells among battery cells which are serially connected may consume electric power all the time, thereby causing expansion of unbalance in voltage of the battery cells and hindering electric discharge of a battery system. When a second battery has a sufficient voltage, an electric current control board supplies operating power to a battery control unit and a relay via an external minus line and an external plus line. On the other hand, when the voltage of the second battery has decreased, the electric current control board supplies the operating power from a first battery to the battery control unit and the relay via an internal minus line and an internal plus line. A first electric current control unit and a second electric current control unit control the supply of the operating power according to, for example, the decrease in voltage of the second battery.

Abstract: This application provides an energy storage system control method, a control apparatus, and an energy storage system. The energy storage system is coupled to an energy generation system and includes a plurality of energy storage units. The energy storage system control method includes: controlling, in a first stage, the energy generation system to charge a first energy storage unit in the plurality of energy storage units, where the first stage is a charging stage in a charging cycle of the first energy storage unit; and controlling, in a second stage, the first energy storage unit to discharge electricity to a second energy storage unit in the plurality of energy storage units, where the second stage is a discharging stage in the charging cycle of the first energy storage unit.

Abstract: A power conversion device is applicable to a power supply system including a first battery and a second battery having a rated voltage different from a rated voltage of the first battery. The power conversion device includes a charging circuit configured to convert AC power input from an AC power supply into DC power and charge the first battery with the DC power, a voltage converter configured to convert a power supply voltage of the first battery and outputs the converted voltage to the second battery, and an interrupting unit configured to be capable of interrupting a supply of the DC power to the voltage converter during charging of the first battery by the charging circuit.