The present application relates to a battery module, and the battery module includes a first-type battery cell and a second-type battery cell at least connected in series, the first-type battery cell and the second-type battery cell are battery cells of different chemical systems, the first-type battery cell includes N first battery cell(s), the second-type battery cell includes M second battery cell(s), N and M are positive integers, a specific surface area of a positive active substance of the first battery cell is S1, a specific surface area of a positive active substance of the second battery cell is S2, and S1 and S2 satisfy: 1≤S1/S2≤60.

The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first and second type of battery cells are battery cells of different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.

The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first and second type of battery cells are battery cells of different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.

The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first type of battery cells and the second type of battery cells are battery cells with different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, N and M are positive integers, the first battery cell comprises a first separator and a first electrolyte, the second battery cell comprises a second separator and a second electrolyte, a kinetic characteristic factor x1 of the first battery cell is: x1=1000×(ε1×r1)/(τ1×t1×θ1), a kinetic characteristic factor x2 of the second battery cell is: x2=1000×(ε2×r2)/(τ2×t2×θ2), and x1 and x2 satisfy: 0.01≤x1/x2≤160.

The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first type of battery cells and the second type of battery cells are battery cells with different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, N and M are positive integers, the first battery cell comprises a first separator and a first electrolyte, the second battery cell comprises a second separator and a second electrolyte, a kinetic characteristic factor x1 of the first battery cell is: x1=1000×(ε1×r1)/(τ1×t1×θ1), a kinetic characteristic factor x2 of the second battery cell is: x2=1000×(ε2×r2)/(τ2×t2×θ2), and x1 and x2 satisfy: 0.01≤x1/x2≤160.

A battery assembly and a control unit for aiming at outputting a target voltage during charging or discharging and a method, a battery assembly and a control unit for maintaining a target voltage of a battery assembly during charging or discharging are disclosed. The battery assembly (100) comprises a first battery module (110) configured to receive a first signal representing a first voltage to be output over the first battery module (110), wherein the first signal is configurable to represent a range of voltages capable of being output over the first battery module (110). Moreover, the battery assembly (100) comprises a plurality of second battery modules (160-180). Each second battery module (160, 170, 180) of the plurality of second battery modules (160-180) is configured to receive a respective second signal, representing a respective configuration, which indicates whether said each second battery module (160, 170, 180) is to be switched-on or bypassed.

A battery assembly and a control unit for aiming at outputting a target voltage during charging or discharging and a method, a battery assembly and a control unit for maintaining a target voltage of a battery assembly during charging or discharging are disclosed. The battery assembly (100) comprises a first battery module (110) configured to receive a first signal representing a first voltage to be output over the first battery module (110), wherein the first signal is configurable to represent a range of voltages capable of being output over the first battery module (110). Moreover, the battery assembly (100) comprises a plurality of second battery modules (160-180). Each second battery module (160, 170, 180) of the plurality of second battery modules (160-180) is configured to receive a respective second signal, representing a respective configuration, which indicates whether said each second battery module (160, 170, 180) is to be switched-on or bypassed.

A method for manufacturing an electricity-storage module includes: preparing a stacked body and first sealing portions; processing an extension portion of one or more first sealing portions included in an outer edge portion in a stacking direction of the stacked body so that an extension portion length of the one or more of first sealing portions becomes shorter than a length of the extension portions of the first sealing portions which are not included in the outer edge portion; and forming a second sealing portion that is provided at the periphery of the first sealing portions when viewed from the stacking direction and covers at least parts of outer surfaces of the first sealing portions located at stacking ends of the stacked body in the stacking direction by injection molding in which a resin material is caused to circulate in a mold frame.

A battery housing is disclosed that includes a multi-battery configuration based on a common battery cradle that can support two different battery types such that batteries of a first and a second type may be utilized to supply power to a device in an alternative/interchangeable fashion. Therefore, a user/operator of a device may then select batteries of the first type, or the second type, such that the battery housing includes only batteries of the first or second type during operation of the device, but not both.

Exemplary systems and methods enable efficient and reliable positioning, assembly, retention, interconnection, and management of battery cells in battery packs, for example battery packs utilized in electric vehicles.