A battery apparatus includes batteries arranged in a first direction; an end plate disposed at an end of the battery apparatus and having adjacent third and fourth surfaces; a protective support disposed on the end plate and having adjacent first and second surfaces. The first and third surfaces are disposed opposite to each other, and the second and fourth surfaces face the batteries; the fourth surface has an adhesive layer; the protective support has a notch at a junction of the first and second surfaces, and the notch is a first notch, and/or the end plate is provided with a notch at a junction of the third and fourth surfaces, and the notch is a second notch; a first (first notch and third surface), second (second notch and first surface), or third (first and second notches) combination forms a groove, and an opening of the groove faces the batteries.

A battery pack includes at least one cell assembly including a plurality of battery cells, an energy consumer configured to discharge the at least one cell assembly when thermal runaway occurs in at least one of the plurality of battery cells, and a storage unit in which the energy consumption unit consumer is received inside, and configured to discharge at least part of the energy consumer to outside when the energy consumer discharges the cell assembly.

A discharge device for discharging a plurality of battery cells having an unknown state-of charge is disclosed. The discharge device includes a contact-connection element for the electrical contact-connection of respective battery cells in the plurality of battery cells, and a short-circuiting element. The contact-connection element includes, for each individual battery cell in the plurality of battery cells, an electrical contact having a non-return device. Each of the non-return devices is configured to prevent any return flow of electricity from the respective battery cells, via the contact-connection element, into a battery cell which is assigned to the respective non-return device such that electricity is removed in a unidirectional manner from the respective battery cell. Respective electrical contacts of the contact-connection element are electrically coupled in the direction of flow of electricity, down-circuit of the respective non-return devices. The short-circuiting element is configured to short-circuit the plurality of battery cells.

A plurality of power source circuits is each configured to be able to selectively charge any one of a plurality of cells included in each of series cell groups by using a voltage across each of series cell groups. The plurality of discharge circuits are each configured to be able to discharge a capacity stored in each of series cell groups. A controlling circuit equalizes the states of the plurality of cells included in each of the series cell groups by using the plurality of power source circuits. The controlling circuit equalizes the states of the plurality of series cell groups by using the plurality of discharge circuits.

In one embodiment, a system comprising a battery set comprising plural battery cells configured in a circuit; and a control system configured to switch current flow in the circuit from bi-directional flow to and from the battery set to mono-directional flow to or from the battery set based on an over-charging or over-discharging condition.

An improved battery module and methods of assembly are disclosed. A battery module may include carriers for holding battery cells via interference fit. The carriers may include a busbar with a stamped fusible link between each battery cell and the busbar. The battery module may be held together via interference fit, laser welding, and friction welding. A method of assembly may electrically and mechanically connect battery cells by laser welding stamped fusible links within a busbar. The method may further enclose the battery cells within a case and create a seal between the lid and case using friction welding.

A battery module, a device, and a failure handling method for a failed battery cell. The battery module includes: a battery cell arrangement structure, including a plurality of battery cells arranged along a length direction, where the battery cells include electrode terminals, and the battery cells include a failed battery cell; a box body, having an accommodation cavity in which the battery cell arrangement structure is located; a mounting beam, located in the accommodation cavity and at an end of the battery cell arrangement structure along the width direction; a pressing plate; and a conductive component, connected to a positive electrode terminal and a negative electrode terminal of the failed battery cell. The conductive component is easily connected to electrode terminals of a failed battery cell, so that a maintenance process can be simplified and maintenance costs can be reduced.

A power supply system includes a plurality of sweep modules, a defect detecting unit, and a control unit. Each sweep module includes a battery module and a power circuit module. The defect detecting unit detects a defect for each sweep module. The number of sweep modules is greater S (S≥2) than a minimum number of sweep modules required for operation. When the number of defective sweep modules in which a defect has been detected is equal to or less than F (2≤F≤S), the control unit is configured to disconnect the defective sweep modules from a main line and to continuously execute sweep control.

A pouch battery module is provided. The pouch battery module includes a metal housing, wherein a plurality of pouch battery cells arranged along a first direction is disposed inside the metal housing; and a rigid insulation plate being provided between an outermost pouch battery cell and the metal housing along the first direction.

The present disclosure relates to the technical field of energy storage devices, and particularly, to a battery module. The battery module includes a lower case, a plurality of battery cells sequentially stacked and received in the lower case, and a heat conducting plate. The lower case is provided with an engaging groove, the heat conducting plate is provided with an inserted portion, and the inserted portion is inserted and fitted in the engaging groove. In the battery module according to the present disclosure, through a fitting insertion of the inserted portion in the engaging groove, a stable connection structure can be formed between the heat conducting plate and the lower case, thereby ensuring the structural stability of the battery module.