A battery module includes battery stack including a plurality of stacked battery cells, a pair of end plates disposed at both end parts in a stacking direction of battery stack, bind bar in which the pair of end plates are coupled, and electronic circuit block mounted with voltage detection circuit that detects a voltage of battery cells. Electronic circuit block is disposed on an outer surface of both end plates disposed at both end parts of battery stack, and electronic circuit block is connected to battery cells via voltage detection line.

A battery management apparatus, a battery pack, an electric vehicle and a battery management method are provided. The battery management apparatus according to the present disclosure includes a controller configured to obtain a plurality of cell state parameters indicating electric states of the plurality of battery cells; determine whether to perform a balancing process, which is a procedure of selectively discharging or charging each of the plurality of battery cells, to suppress a deviation in electric states among the plurality of battery cells; and perform the balancing process for at least one battery cell among the plurality of battery cells, based on the plurality of cell state parameters.

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.

An energy storage system includes a plurality of energy storage banks connected in parallel to a trunk line, and a system management device. When a maximum voltage difference between the energy storage banks is equal to or greater than a first threshold before the energy storage banks are caused to input to the trunk line, the system management device executes a process of mitigating a cross current generated between the energy storage banks to mitigate a cross current accompanying the inputting to the trunk line by the energy storage banks. When the maximum voltage difference between the energy storage banks is less than the first threshold, the system management device causes the energy storage banks to input to the trunk line without limitation of the process of mitigating the cross current.

A battery module capable of suppressing spread of battery fire including a case, a plurality of battery packs, a plurality of temperature sensors, an energy consumption module and a controller. The case forms an accommodation space, and the battery packs is accommodated in the accommodation space. The temperature sensors are dispersedly configured to the accommodation space, and the temperature sensors respectively detect an ambient temperature around configure locations. The controller is coupled to the temperature sensors, and when the ambient temperature detected by one of the temperature sensors is greater than or equal to a first specific temperature range, the controller controls the energy consumption module to consume a battery capacity of at least one battery pack around the one of the temperature sensors.

A battery module capable of suppressing spread of battery fire including a case, a plurality of battery packs, a plurality of temperature sensors, an energy consumption module and a controller. The case forms an accommodation space, and the battery packs is accommodated in the accommodation space. The temperature sensors are dispersedly configured to the accommodation space, and the temperature sensors respectively detect an ambient temperature around configure locations. The controller is coupled to the temperature sensors, and when the ambient temperature detected by one of the temperature sensors is greater than or equal to a first specific temperature range, the controller controls the energy consumption module to consume a battery capacity of at least one battery pack around the one of the temperature sensors.

A battery system including: a first electrical energy store being configured to provide a first electrical energy output at a first voltage and being connected to a voltage conversion unit; a second electrical energy store being configured to provide a second electrical energy output at a second voltage and being connected to an output of the battery system; and the voltage conversion unit connecting the first electrical energy store and the second electrical energy store and being configured to: perform a first voltage conversion functionality, in which the voltage conversion unit is configured to convert between the first voltage and the second voltage; and perform a second voltage conversion functionality, in which the voltage conversion unit is configured to convert between a third voltage and the first or second voltage; the first voltage conversion functionality and the second voltage conversion functionality sharing circuitry of the voltage conversion unit.

A battery system including a number of first battery modules each including a number of battery cells, and a number of second battery modules each including a number of battery cells. Each second battery module includes a power electronics unit having a DC/DC converter. The first and second battery modules are connected in series. The first battery modules are connected directly in series and the second battery modules are connected via their power electronics units.

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.

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.