Abstract: In an embodiment, a battery includes a container, a lid member, an electrode group, an electrode terminal and an electrode group retainer. The lid member is attached to a peripheral wall of the container with an opening of an inner cavity being closed. The electrode terminal is electrically connected to the current collecting tab. The electrode group retainer is arranged between the electrode group and the lid member. A proximity plate portion of the electrode group retainer is close to the electrode group from a side where the lid member is located and forms a space between the lid member and thereof. A facing surface of the proximity plate portion is formed to have a shape that is along an outer surface of an end portion of the electrode group on a side where the lid member is located.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a positive electrode active material containing LixNi1-a-bCoaMnbMcO2 (0.9<x?1.25, 0<a?0.4, 0?b?0.45, 0?c?0.1, and M represents at least one element selected from the group consisting of Mg, Al, Si, Ti, Zn, Zr, Ca, and Sn). The separator includes polyester. A pore volume in a pore size distribution according to a mercury intrusion porosimetry is in a range of 0.9 cm3/g to 3 cm3/g. An air permeability value according to a Gurley method is in a range of 2 sec/100 ml to 15 sec/100 ml.

Abstract: According to one embodiment, a lid assembly includes a plate-shaped lid, a pair of leads, an insulating member, and a valve. The insulating member is provided between the lid and base portions of the pair of leads. The insulating member includes opposing faces facing an electrode group, a pair of support face groups protruding with respect to the opposing faces, and an intermediate region provided between the pair of support face groups and having an opening facing the lid. The valve is adjacent to the opening of the intermediate region, and is configured to open when a pressure on a side where the leads and the insulating member are disposed reaching a predetermined pressure. A maximum possible opening area with which the valve is configured to open is equal to or smaller than an area of the opposing faces.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a positive electrode active material containing LixNi1-a-bCoaMnbMcO2 (0.9<x?1.25, 0<a ?0.4, 0?b?0.45, 0?c?0.1, and M represents at least one element selected from the group consisting of Mg, Al, Si, Ti, Zn, Zr, Ca, and Sn). The separator includes polyester. A pore volume in a pore size distribution according to a mercury intrusion porosimetry is in a range of 0.9 cm3/g to 3 cm3/g. An air permeability value according to a Gurley method is in a range of 2 sec/100 ml to 15 sec/100 ml.

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a positive electrode active material containing LixNi1?a?bCoaMnbMcO2 (0.9<x?1.25, 0<a?0.4, 0?b?0.45, 0?c?0.1, and M represents at least one element selected from the group consisting of Mg, Al, Si, Ti, Zn, Zr, Ca, and Sn). The separator includes polyester. A pore volume in a pore size distribution according to a mercury intrusion porosimetry is in a range of 0.9 cm3/g to 3 cm3/g. An air permeability value according to a Gurley method is in a range of 2 sec/100 ml to 15 sec/100 ml.

Abstract: According to an embodiment, a nonaqueous electrolyte battery including an electrode group and a nonaqueous electrolyte is provided. The electrode group is formed by winding a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode. The tension modulus of the separator in the winding direction is within a range of 200 (N/mm2) to 2,000 (N/mm2).

Abstract: According to an embodiment, a nonaqueous electrolyte battery including an electrode group and a nonaqueous electrolyte is provided. The electrode group is formed by winding a positive electrode, a negative electrode, and a separator arranged between the positive electrode and the negative electrode. The tension modulus of the separator in the winding direction is within a range of 200 (N/mm2) to 2,000 (N/mm2).

Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode, a nonaqueous electrolyte and a separator. The positive electrode includes a positive electrode active material containing LixNi1?a?bCoaMnbMcO2 (0.9<x?1.25, 0<a?0.4, 0?b?0.45, 0?c?0.1, and M represents at least one element selected from the group consisting of Mg, Al, Si, Ti, Zn, Zr, Ca, and Sn). The separator includes polyester. A pore volume in a pore size distribution according to a mercury intrusion porosimetry is in a range of 0.9 cm3/g to 3 cm3/g. An air permeability value according to a Gurley method is in a range of 2 sec/100 ml to 15 sec/100 ml.