This application provides a battery pack, a vehicle, and an energy storage device. The battery pack includes at least one battery sequence. The battery sequence includes a plurality of batteries. A thickness of each battery extends along a first direction. The plurality of batteries are successively arranged along the first direction to form the battery sequence. At least one of the batteries includes a casing and a core packaged in the casing. A gap exists between at least two neighboring batteries. A ratio of the gap to the thickness of the battery is c, and c satisfies the following relational expression: c/a=0.01-0.5, where a represents an expansion rate of the battery.

Disclosed herein are battery modules including at least one battery assembly in turn contains a plurality of cells with two poles at opposing ends and arranged laterally in one row next to each other so that a pole of a cell is next to a pole of a neighbouring cell, a plurality of interconnectors connecting a pole of a cell to pole of a neighbouring cell, a cell holder arranged on at least one side of the plurality of laterally arranged cells so as to position the cells at a mutual distance and to obstruct at least partially a fluid flow in a direction between the two poles at opposing ends of each cell, the battery module further including a housing arranged to accommodate the battery assembly and forming two continuous spaces around each row of poles allowing for fluid flow.

Disclosed herein are battery modules including at least one battery assembly in turn contains a plurality of cells with two poles at opposing ends and arranged laterally in one row next to each other so that a pole of a cell is next to a pole of a neighbouring cell, a plurality of interconnectors connecting a pole of a cell to pole of a neighbouring cell, a cell holder arranged on at least one side of the plurality of laterally arranged cells so as to position the cells at a mutual distance and to obstruct at least partially a fluid flow in a direction between the two poles at opposing ends of each cell, the battery module further including a housing arranged to accommodate the battery assembly and forming two continuous spaces around each row of poles allowing for fluid flow.

A battery pack includes a housing and multiple electrode core strings electrically connected to each other and disposed in the housing. The housing includes a housing body which includes sub-housings connected to each other. A sub-housing includes at least one reinforcing plate and a top plate and a bottom plate oppositely arranged in a first direction. The reinforcing plate is arranged between and is connected to the top plate and the bottom plate, and divides an interior of the corresponding sub-housing into multiple accommodating cavities. At least one accommodating cavity includes at least one electrode core string which includes electrode core assemblies connected and arranged in a second direction. The electrode core assemblies are disposed in an encapsulation film. A length of the electrode core string extends in the second direction. The housing includes a mounting component that is configured to be connected and fixed to an external load.

A battery pack includes a housing and multiple electrode core strings electrically connected to each other and disposed in the housing. The housing includes a housing body which includes sub-housings connected to each other. A sub-housing includes at least one reinforcing plate and a top plate and a bottom plate oppositely arranged in a first direction. The reinforcing plate is arranged between and is connected to the top plate and the bottom plate, and divides an interior of the corresponding sub-housing into multiple accommodating cavities. At least one accommodating cavity includes at least one electrode core string which includes electrode core assemblies connected and arranged in a second direction. The electrode core assemblies are disposed in an encapsulation film. A length of the electrode core string extends in the second direction. The housing includes a mounting component that is configured to be connected and fixed to an external load.

A battery includes a housing and multiple electrode core assemblies in the housing. The electrode core assemblies are connected. Each electrode core assembly includes an encapsulation film and an electrode core arranged in an accommodating cavity defined by the encapsulation film. An insulating spacer is arranged between two connected electrode core assemblies and has a through hole. The electrode core assembly includes a first electrode and a second electrode. The first electrode of one electrode core assembly is connected to the second electrode of the other electrode core assembly of the connected two electrode core assemblies at a connecting part accommodated in the through hole. The insulating spacer includes a peripheral surface facing an inner surface of the housing. A metal member is arranged on the peripheral surface of the insulating spacer. The metal member is connected to the housing to fix the insulating spacer with the housing.

A busbar for a battery system according to an exemplary embodiment of the present invention includes: a first bar member and a second bar member which are spaced apart from each other; and a third bar member which connects the first bar member and the second bar member to define a common bar, in which the third bar member is shunt resistance having ohmic resistance and electrically connects the first bar member and the second bar member. In addition, a battery system according to the exemplary embodiment of the present invention includes the busbar.

A busbar for a battery system according to an exemplary embodiment of the present invention includes: a first bar member and a second bar member which are spaced apart from each other; and a third bar member which connects the first bar member and the second bar member to define a common bar, in which the third bar member is shunt resistance having ohmic resistance and electrically connects the first bar member and the second bar member. In addition, a battery system according to the exemplary embodiment of the present invention includes the busbar.

An electrochemical cell may include: an anode; a porous anodic current collector; a cathode; a porous cathodic current collector; and an alkali metal-conducting separator that separates the anode from the cathode and is disposed surrounding the anodic current collector. The cathode may include seawater. A battery module may include a plurality of the electrochemical cells, and a battery may include a plurality of the battery modules.

An electrochemical cell may include: an anode; a porous anodic current collector; a cathode; a porous cathodic current collector; and an alkali metal-conducting separator that separates the anode from the cathode and is disposed surrounding the anodic current collector. The cathode may include seawater. A battery module may include a plurality of the electrochemical cells, and a battery may include a plurality of the battery modules.