An embodiment battery pack includes battery modules each including a plurality of battery cells stacked and connected in parallel, the battery modules being arranged adjacent to each other, a housing fixedly surrounding the battery modules, and an auxiliary rigid plate disposed between the battery modules so as to face side surfaces of the battery modules, the auxiliary rigid plate being coupled to the housing and defining a unitary rigid body together with the housing.

A battery management system, method, and computer program for mitigating a battery condition, according to a multi-level mitigation system and based on the severity of the battery condition, is provided. An example battery management system may include a battery with a battery housing defining an interior battery compartment, one or more battery cells disposed within the interior battery compartment, and one or more internal sensing elements attached to the battery housing within the interior battery compartment. The battery management system may further include a controller in electrical communication with the one or more internal sensing elements. In addition, the controller of the battery management system may select between a plurality of mitigating actions based at least in part on a battery condition. The plurality of mitigating actions available to the controller may include at least a non-destructive mitigating action and a destructive mitigating action.

A circuit structure with a novel structure is disclosed in which a measure against arcs can be implemented with a simple structure and a reduction in size and cost can be realized. A circuit structure including: a power supply line configured to connect a battery and a load; a main relay connected to the power supply line; a pre-charge circuit including a pre-charge resistor and a pre-charge relay connected in series, and connected in parallel to the main relay; and a sub relay connected in parallel to the pre-charge resistor.

Embodiments of this application provide charging apparatuses, charging apparatus control methods, and charging systems, and relate to the field of terminal device charging technologies. The charging apparatus includes a rectifier circuit, a transformer, a lower bridge switch, a clamp capacitor, an upper bridge switch, and a controller. The transformer includes a primary coil and at least one secondary coil. The controller is configured to control the upper bridge switch and the lower bridge switch to be alternatively turned on. The controller is further configured to obtain a sampling waveform at a location at which the controller is electrically connected to the transformer when the lower bridge switch is turned off, and, when the sampling waveform is abnormal, turn off the lower bridge switch in a first phase of a next charging cycle. The sampling waveform includes a voltage waveform of the primary coil or a voltage waveform of the secondary coil.

A power charging device with a direct charging mode includes a power conversion module, having a primary-side circuit electrically connected to a primary side of a transformer and an output rectifier circuit electrically connected to a secondary side of the transformer, configured to convert an AC input voltage to a DC output voltage, and a power control module electrically connected to the power conversion module, configured to provide a direct charging mode or a regular USB type-C output power supply mode. The direct charging mode is activated to perform programmable charging when a direct charging agreement is confirmed between the AC to DC power charging device and battery pack, otherwise the regular USB type-C output power supply mode is activated.

An energy storage system may include one or more first battery racks, one or more second battery racks, one or more DC/DC converters configured to manage the one or more second battery racks respectively, and a battery system controller configured to monitor outputs of the one or more first battery racks and outputs of the one or more DC/DC converters, and to control the outputs of the one or more DC/DC converters. Tye one or more second battery racks and the one or more DC/DC converters are additionally installed in the energy storage system after the first battery racks are installed in the energy storage system to augment the first battery racks.

This disclosure relates to the field of power electronics technology and provides an energy storage valve submodule, an energy storage valve, and an energy storage station. In the energy storage valve submodule, a power module can disconnect an electrical connection from an energy storage module through a switch module, forming electrical isolation, thereby achieving the electrical disconnection between the power module and the energy storage module. During maintenance of components other than the energy storage module in the energy storage valve, leakage current is prevented, ensuring the personal safety of maintenance personnel. Similarly, in the case of a non-severe fault on the energy storage module side of the energy storage valve, the switch module can be used to isolate the energy storage module from the system under the premise that the energy storage valve is locked, without affecting the safe operation of the entire system, effectively improving system availability.

A battery system with a large-format Li-ion battery powers attached equipment by discharging battery cells distributed among a plurality of battery packs. The discharging of the battery cells is controlled in an efficient manner while preserving the expected life of the Li-ion battery cells. Each battery pack internally supports a battery management system and may have identical components, thus supporting an architecture that easily scales to higher power/energy. Battery packs may be added or removed without intervention with a user, where one of battery packs serves as a master battery pack and the remaining battery packs serve as slave battery packs. When the master battery pack is removed, one of the slave battery packs becomes the master battery pack. Charging and discharging of the battery cells is coordinated by the master battery pack with the slave battery packs over a communication channel such as a controller area network (CAN) bus.

A charging and discharging circuit and method, and a computing device and a storage medium. Two energy storage elements in the charging and discharging circuit are connected by means of a first adjustment switch module, after a switch is turned on, heating control is performed, and self-heating of a battery is realized by means of an alternating current generated by a charging and discharging loop between a dual-driving electric motor and the battery.

A charging and discharging circuit and method, and a computing device and a storage medium. Two energy storage elements in the charging and discharging circuit are connected by means of a first adjustment switch module, after a switch is turned on, heating control is performed, and self-heating of a battery is realized by means of an alternating current generated by a charging and discharging loop between a dual-driving electric motor and the battery.