A busbar for a battery module includes a first portion configured to be coupled to a first terminal of a first battery cell, a second portion configured to be coupled to a second terminal of a second battery cell, and a fuse portion extending between the first portion and the second portion. The fuse portion includes a number of openings extending through the fuse portion. Each pair of openings defines an electrical path between the first portion of the busbar and the second portion of the busbar.

A stackable power storage system is herein described. It comprises a plurality of power modules connectable to each other into a power stack, each one of the power modules comprising at least of a bottom and a top identical to another one of the power modules. The bottom of a top one of the power modules is at least partially nestable in a bottom one of the power modules, The modules comprise connectors connected connectable between power modules when the power modules are stacked thereby at least partially nested relative to each other. Power is transferred between the power modules through the connectors.

A stackable power storage system is herein described. It comprises a plurality of power modules connectable to each other into a power stack, each one of the power modules comprising at least of a bottom and a top identical to another one of the power modules. The bottom of a top one of the power modules is at least partially nestable in a bottom one of the power modules, The modules comprise connectors connected connectable between power modules when the power modules are stacked thereby at least partially nested relative to each other. Power is transferred between the power modules through the connectors.

A battery module including a plurality of battery cells arranged in a line; and a busbar electrically connecting the multiple battery cells, wherein the busbar includes a large current busbar having a central region and a peripheral region, a stepped busbar electrically connecting the central region of the large current busbar and the plurality of battery cells, and a wave busbar electrically connecting the peripheral region of the large current busbar and the plurality of battery cells.

A battery module including a plurality of battery cells arranged in a line; and a busbar electrically connecting the multiple battery cells, wherein the busbar includes a large current busbar having a central region and a peripheral region, a stepped busbar electrically connecting the central region of the large current busbar and the plurality of battery cells, and a wave busbar electrically connecting the peripheral region of the large current busbar and the plurality of battery cells.

Provided herein are energy storage devices. In some cases, the energy storage devices are capable of being transported on a vehicle and storing a large amount of energy. An energy storage device is provided comprising at least one liquid metal electrode, an energy storage capacity of at least about 1 MWh and a response time less than or equal to about 100 milliseconds (ms).

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 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 system which includes a plurality of cylindrical battery cells that have a uniform orientation, where each of the plurality of cylindrical battery cells has a first planar surface and a second planar surface. There is also a thermal management and structural (TMS) plate that is disposed at the second planar surface of the plurality of cylindrical battery cells and a bonding plate that is disposed at the first planar surface of the plurality of cylindrical battery cells. At least some electrical connections between the plurality of cylindrical battery cells and the bonding plate include ribbon bonding.

A system which includes a plurality of cylindrical battery cells that have a uniform orientation, where each of the plurality of cylindrical battery cells has a first planar surface and a second planar surface. There is also a thermal management and structural (TMS) plate that is disposed at the second planar surface of the plurality of cylindrical battery cells and a bonding plate that is disposed at the first planar surface of the plurality of cylindrical battery cells. At least some electrical connections between the plurality of cylindrical battery cells and the bonding plate include ribbon bonding.