A secondary battery includes an electrode, a positive electrode current collector, a negative electrode current collector, a positive electrode terminal, a negative electrode terminal, and an insulating plate. The positive electrode terminal and the negative electrode terminal each have a main side surface and a sub side surface having an area smaller than that of the main side surface. The positive electrode terminal and the negative electrode terminal are arranged so that the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal face each other. The insulating plate is arranged between the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal.

A secondary battery includes an electrode, a positive electrode current collector, a negative electrode current collector, a positive electrode terminal, a negative electrode terminal, and an insulating plate. The positive electrode terminal and the negative electrode terminal each have a main side surface and a sub side surface having an area smaller than that of the main side surface. The positive electrode terminal and the negative electrode terminal are arranged so that the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal face each other. The insulating plate is arranged between the main side surface of the positive electrode terminal and the main side surface of the negative electrode terminal.

A conductive module includes a first conductive member electrically connected to an electrode terminal of a battery cell; a second conductive member that electrically connects a battery monitoring unit monitoring a battery state to the first conductive member; a circuit protection member arranged between the first conductive member and the second conductive member; a first electrical connection structural body electrically connecting the first conductive member and the circuit protection member; a second electrical connection structural body electrically connecting the second conductive member and the circuit protection member; a housing member housing the circuit protection member and the first and second electrical connection structural bodies; and a mounting structure that mounts the housing member to an insulating member with the insulating member sandwiching the battery cell as a mounting target. The mounting structure includes a conductor-side engagement body which is an engagement body provided in the housing member.

To suppress heat generation in a short-circuit current shunt part in a stacked battery that includes the short-circuit current shunt part, in the stacked battery 100 including at least one short-circuit current shunt part 10, and a stack 20 that includes a plurality of electric elements 20a, 20b which are stacked, the short-circuit current shunt part 10 includes a first part 10a that is provided on one end side in a stacking direction of the stack 20, a second part 10b that is provided on another end side therein, and a third part 10c that connects the first part 10a and the second part 10b; at the first part 10a, the first current collector layer 11 and the cathode current collector layer 21 have an electric connection part 14a but the second current collector layer 12 and the anode current collector layer 25 do not have any electric connection part, at the second part 10b, the second current collector layer 12 and the anode current collector layer 25 have an electric connection part 14b but the first current collector layer 11 and the cathode current collector layer 21 do not have any electric connection part, and at the third part 10c, the short-circuit current shunt part 10 and the stack 20 do not have any electric connection part.

A sealed battery disclosed herein is provided with an electrode body, a battery case, and an insulating holder. Round sections, having a curved surface, are formed between an inner surface and a bottom surface of the battery case. Deformation portions protruding towards the center, in a width direction, are formed on the inner surface of a lower end section of the insulating holder. A lower end section of a positive electrode connection portion and a lower end section of a negative electrode connection portion are press-deformed towards the center, in the width direction, by the deformation portions of the insulating holder. It becomes accordingly possible to suitably prevent short-circuits between the electrode body and the battery case, even when clearances within the battery case are made small and a width dimension of the electrode body is made large. Energy density can be suitably increased as a result.

A battery holder may include a negative electric terminal that includes a first coiled spring, a positive electric terminal that includes second coiled spring, and a pin that aligns mating of the negative connector and the positive connector. Other aspects are described and claimed.

A battery holder may include a negative electric terminal that includes a first coiled spring, a positive electric terminal that includes second coiled spring, and a pin that aligns mating of the negative connector and the positive connector. Other aspects are described and claimed.

A nonaqueous electrolyte secondary battery according to one example of an embodiment includes: a wound electrode assembly in which a positive electrode and a negative electrode are wound with at least one separator interposed therebetween. In the nonaqueous electrolyte secondary battery, a negative electrode lead is bonded to an inner surface X of a negative electrode collector facing the inside in a radial direction, and an insulating tape is adhered to, among surfaces of an overlapping portion of the negative electrode lead and the negative electrode collector, at least a surface at an outer side in the radial direction of the electrode assembly. The insulating tape includes a base material layer, an adhesive layer, and an inorganic particle-containing layer formed therebetween, and the inorganic particle-containing layer contains 20 percent by weight or more of inorganic particles with respect to the weight of the layer described above.

A battery pack includes a pack case that includes external terminals formed on one side and contains a plurality of battery modules inside; a protective frame that extends across the pack case and defines the module area; a busbar that electrically connects the battery modules and the external terminals of the pack case; and a battery management unit located on the other side opposite to the pack case from where the external terminals are formed. The protective frame includes slots extending along the length direction of the protective frame, the module area is compartmentalized by the protective frame and includes a first battery part formed on one side of the protective frame and a second battery part formed on the opposite side of the protective frame, the busbar is inserted and secured within the slots of the protective frame, and the protective frame surrounds its sides.

A battery module includes a thermal conductive housing. A plurality of cells are arranged within the housing. An electrically insulated bottom cell holder is located between the plurality of cells and the housing. The bottom cell holder has a network of positions in which each of the plurality of cells are inserted and held. Each of the positions has an offsetting member that creates a space between the plurality of cells and a first side of the housing. A thermal adhesive occupies the space, thereby fixing each of the plurality of cells to the housing. Other aspects are described.