Patent ID: 11935998
Assignee: NISSAN MOTOR CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A battery device comprising:
a non-aqueous electrolyte secondary battery that includes power generating elements, each power generating element including
a positive electrode in which a positive electrode active material layer that includes a non-bound body including a positive electrode active material is formed on a surface of a positive electrode current collector,
a negative electrode in which a negative electrode active material layer that includes a non-bound body including a negative electrode active material is formed on a surface of a negative electrode current collector;
a separator in which an electrolyte solution is retained; and
pressurizing members that pressurize the power generating elements in a direction of lamination thereof,
wherein when a thickness of a thickest portion in the direction of lamination of the power generating elements is designated as T1, and a thickness of a thinnest portion is designated as T2, the battery device satisfies the following Mathematical Formula (1):

0.1<(T1−T2)/T1×100<5

and the T1 represents a thickness of a center part in a case in which the power generating elements are viewed in planar view, and
wherein a minimum value of a force of pressurization in the direction of lamination of each of the power generating elements is 200 kPa or greater.