This application discloses a battery, an electrical device, and a method and device for manufacturing a battery. The battery includes: a plurality of battery cells arranged along a first direction, where electrode terminals are disposed on two end faces of each of the battery cells along the first direction respectively; and a busbar component, configured to connect the two electrode terminals to implement electrical connection between two battery cells. The busbar component includes a flexible bend portion. The flexible bend portion is configured to adjust a relative position between the two electrode terminals. A maximum width of the flexible bend portion along the first direction is greater than a distance between the two electrode terminals. The flexible bend portion disposed in the busbar component can be bent in various forms to meet a requirement of electrically connecting the two battery cells arranged at a variety of relative positions.

This application discloses a battery, an electrical device, and a method and device for manufacturing a battery. The battery includes: a plurality of battery cells arranged along a first direction, where electrode terminals are disposed on two end faces of each of the battery cells along the first direction respectively; and a busbar component, configured to connect the two electrode terminals to implement electrical connection between two battery cells. The busbar component includes a flexible bend portion. The flexible bend portion is configured to adjust a relative position between the two electrode terminals. A maximum width of the flexible bend portion along the first direction is greater than a distance between the two electrode terminals. The flexible bend portion disposed in the busbar component can be bent in various forms to meet a requirement of electrically connecting the two battery cells arranged at a variety of relative positions.

In a module from an electrical battery, a laminated busbar interconnects prismatic electrical cells that are configured to be arranged in cell groups of the same number of cells. The busbar comprises: a first electrically conductive layer, with at least one electrically conducting element, each configured to connect electric poles of two adjacent cell groups, a first electrically insulating layer, laminated on the first conductive layer, a first electrical connector, configured to be connected to a first cell group, a second electrically conductive layer laminated onto the first insulating layer and comprising a second electrical connector to be connected to a last cell group, and a third electrical connector located closer to the first electrical connector than to the second electrical connector.

The first insulating layer comprises a cut-out window, configured to allow electrical connection of the second electrical connector with the last cell group.

In a module from an electrical battery, a laminated busbar interconnects prismatic electrical cells that are configured to be arranged in cell groups of the same number of cells. The busbar comprises: a first electrically conductive layer, with at least one electrically conducting element, each configured to connect electric poles of two adjacent cell groups, a first electrically insulating layer, laminated on the first conductive layer, a first electrical connector, configured to be connected to a first cell group, a second electrically conductive layer laminated onto the first insulating layer and comprising a second electrical connector to be connected to a last cell group, and a third electrical connector located closer to the first electrical connector than to the second electrical connector.

The first insulating layer comprises a cut-out window, configured to allow electrical connection of the second electrical connector with the last cell group.

A busbar module includes: busbars that are fixed to battery cells of a battery module; a plate-like flexible circuit body that includes conductors corresponding to the busbars; and a case that accommodates the circuit body and the busbars, in which the circuit body includes a trunk portion and a branch portion connected to the busbar, the branch portion includes a base layer, a metal foil that is the connection conductor, and a coating layer that covers the base layer and the metal foil, the branch portion has a facing portion faces a first surface of the busbar, the metal foil is connected to a connection target at a portion that is more adjacent to a distal end than the facing portion is, and the first surface has a groove-shaped recess provided at a portion facing the metal foil.

A busbar module includes: busbars that are fixed to battery cells of a battery module; a plate-like flexible circuit body that includes conductors corresponding to the busbars; and a case that accommodates the circuit body and the busbars, in which the circuit body includes a trunk portion and a branch portion connected to the busbar, the branch portion includes a base layer, a metal foil that is the connection conductor, and a coating layer that covers the base layer and the metal foil, the branch portion has a facing portion faces a first surface of the busbar, the metal foil is connected to a connection target at a portion that is more adjacent to a distal end than the facing portion is, and the first surface has a groove-shaped recess provided at a portion facing the metal foil.

A busbar module includes: a plurality of busbars that are fixed to a plurality of battery cells of a battery module including the plurality of battery cells; and a plate-like flexible circuit body that includes a plurality of connection conductors corresponding to the plurality of busbars, in which the circuit body includes a trunk portion extending in a first direction in which the plurality of battery cells are arranged, and a plurality of branch portions branching from the trunk portion and connected to the busbars, the circuit body includes a first circuit layer and a second circuit layer, and the branch portion has a thin portion composed of any one of the first circuit layer and the second circuit layer, and connects the trunk portion and the busbar in a state where the thin portion is flexurally deformed.

A battery pack includes: a pack housing having an internal space; at least one cell stack body accommodated in the internal space of the pack housing; at least one electronic component accommodated in the internal space of the pack housing; a connecting member electrically connected to at least one of the at least one cell stack body and the at least one electronic component; and a partition wall partitioning the internal space and accommodating at least a portion of the connecting member.

Disclosed are an integrated high-temperature decomposable connector and a lithium ion battery containing the same. The integrated high-temperature decomposable connector includes a connecting plate and supporting columns fixedly arranged on one side of the connecting plate at intervals, clamping columns are fixedly connected to the top ends of the supporting columns, and an insertion recess is formed between adjacent clamping columns; the top end surface of the clamping column and the inner sidewall of the insertion recess are each provided with a conductive layer, the clamping column is made of a high-temperature decomposable material, and the high-temperature decomposable material is formed by mixing a thermosensitive resin and a functional, additive. The conductive layer may be electrically connected to cell tabs, and the thermosensitive resin may be automatically decomposed while the temperature of cells is too high, so that the safety performance of the battery is greatly improved.

Disclosed is an energy storage device, including a device body, an electric connector and an insulating member. The device body has a positive electrode region and a negative electrode region which are insulated from each other, a part of the electric connector is connected with the positive electrode region or the negative electrode region and another part of the electric connector protrudes outward from the device body, and the insulating member is provided on the electric connector and/or the device body and configured to prevent the device from shorting. (FIG. 1)