A busbar that comprises an insulative portion that covers at least a portion of an electrically conductive body is provided. The insulative portion comprises a polymer composition that includes a polymer matrix containing a liquid crystalline polymer. The composition exhibits a comparative tracking index of about 125 volts or more as determined in accordance with IEC 60112:2003 at a thickness of 3 millimeters, and a deflection temperature under load of about 200° C. or more as determined according to ISO 75-2:2013 at a specified load of 1.8 MPa.

A battery pack includes a secondary battery and a circuit board, in which the secondary battery includes a metal exterior part, a first external terminal disposed at a center part of an end surface of the metal exterior part, and a second external terminal disposed so as to surround a periphery of the first external terminal, and the circuit board includes a first connection part connected to the first external terminal and a second connection part connected to the second external terminal; the battery pack including an insulating part that insulates the first connection part from the second connection part, the first connection part and the second connection part being disposed in an identical plane.

A battery pack includes a secondary battery and a circuit board, in which the secondary battery includes a metal exterior part, a first external terminal disposed at a center part of an end surface of the metal exterior part, and a second external terminal disposed so as to surround a periphery of the first external terminal, and the circuit board includes a first connection part connected to the first external terminal and a second connection part connected to the second external terminal; the battery pack including an insulating part that insulates the first connection part from the second connection part, the first connection part and the second connection part being disposed in an identical plane.

The present disclosure provides a battery core assembly, a battery, a battery pack, and a vehicle. The battery core assembly includes an encapsulation film and an electrode core assembly encapsulated in the encapsulation film. The electrode core assembly includes an electrode core assembly body and two electrode lead-out members of opposite polarities electrically connected to the electrode core assembly body. The electrode core assembly body includes at least two electrode cores connected in parallel. Each of the electrode cores includes an electrode core body and two tabs of opposite polarities that are electrically connected to the electrode core body. The electrode core assembly body further includes a tab support. The two electrode lead-out members are respectively electrically connected to one of the tab supports located two sides of the electrode core assembly body in a first direction.

A battery core assembly includes an encapsulation film and multiple electrode core assemblies disposed in the encapsulation film. The electrode core assemblies are connected to form an electrode core string, and each of the electrode core assemblies includes at least one electrode core. A spacer is disposed between two adjacent electrode core assemblies, the first spacer divides an accommodating space inside the encapsulation film into multiple accommodating cavities, cavity walls of the accommodating cavities includes the first spacer and the encapsulation film connected to the first spacer, and the electrode core assemblies are respectively accommodated in the accommodating cavities. The first spacer includes at least one first liquid reservoir, and the at least one first liquid reservoir communicates with one of accommodating cavities on both sides of the first spacer.

Battery module includes: cell stack in which the plurality of cells each having output terminal are arrayed; bus bar that electrically connects output terminals of cells to each other, and bus bar plate that covers the surface of cell stack on which output terminal is disposed, that includes opening at a position overlapping with respective output terminals, bus bar plate in which bus bar is disposed in opening. When one of bus bar plate and cell stack is a first member and the other is a second member, the first member includes biasing part, and the second member includes biasing receiver. The first member and the second member are biased in opposite directions to each other by biasing part pressing the second member, and displacement of the first member and the second member is regulated by biasing receiver abutting on the first member.

A terminal-equipped case member having an external terminal for electrically connecting an external device, which is fixed to a case body for housing an electronic component or a case member constituting a case lid attached to the case body, includes a base material made of metal that forms the case member; the external terminal inserted into a through hole formed through the base material; a sealing material formed of a first resin material that seals a gap between the external terminal and the base material; and a terminal adhesion layer. The external terminal and the sealing member are bonded to each other through the terminal adhesion layer formed of a second resin material with a higher adhesion to the external terminal than that of the first resin material.

A terminal-equipped case member having an external terminal for electrically connecting an external device, which is fixed to a case body for housing an electronic component or a case member constituting a case lid attached to the case body, includes a base material made of metal that forms the case member; the external terminal inserted into a through hole formed through the base material; a sealing material formed of a first resin material that seals a gap between the external terminal and the base material; and a terminal adhesion layer. The external terminal and the sealing member are bonded to each other through the terminal adhesion layer formed of a second resin material with a higher adhesion to the external terminal than that of the first resin material.

A solid state battery that includes: a battery element body; a first external electrode on a first end surface of the battery element body; a second external electrode on a second end surface of the battery element body; and a protective layer covering a peripheral surface of the battery element body that connects the first and second end surfaces. The first external electrode covers a first end surface of the solid state battery, and the second external electrode covers a second end surface of the solid state battery. The first principal surface and the second principal surface have a pair of a first convex part and second convex part extending from the first external electrode to the second external electrode along a longitudinal direction and located at opposed end parts in a transverse direction.

A solid state battery that includes: a battery element body; a first external electrode on a first end surface of the battery element body; a second external electrode on a second end surface of the battery element body; and a protective layer covering a peripheral surface of the battery element body that connects the first and second end surfaces. The first external electrode covers a first end surface of the solid state battery, and the second external electrode covers a second end surface of the solid state battery. The first principal surface and the second principal surface have a pair of a first convex part and second convex part extending from the first external electrode to the second external electrode along a longitudinal direction and located at opposed end parts in a transverse direction.