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US 2024/0258636 A1Published application
Battery pack
AssigneePrime Planet Energy & Solutions, Inc.
InventorsRyosuke IWATA, Shigeki MATSUTA, Tetsuji OMURA
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Abstract
A battery pack disclosed herein includes a plurality of rectangular secondary batteries that are disposed along an arrangement direction, and a spacer that is disposed between the rectangular secondary batteries that are adjacent in the arrangement direction. The spacer includes an elastic part and the elastic part satisfies the following conditions: an elastic modulus in the arrangement direction is 1 MPa or more and 10 MPa or less; and a constant load compression ratio is 35% or more and 70% or less.
Claims6
A battery pack comprising:
- a plurality of rectangular secondary batteries that are disposed along a predetermined arrangement direction;
- and
- a spacer that is disposed between the rectangular secondary batteries that are adjacent in the arrangement direction, wherein
- the spacer includes an elastic part, and
- the elastic part satisfies the following conditions:
- (1) an elastic modulus, which is obtained as an inclination of an approximation line A in a range of a compression ratio from 1 to 20% from a compression load-compression ratio curve (horizontal axis:
- compression ratio, vertical axis:
- compression load) formed by performing compression until a compression load becomes 3.9 MPa in the arrangement direction at a compression speed of 12 kPa/min, is 1 MPa or more and 10 MPa or less, and
- (2) a constant load compression ratio, which is obtained as a value of the horizontal axis at an intersection between the compression load-compression ratio curve and a straight line B obtained by multiplying the inclination of the approximation line A by 1.4, is 35% or more and 70% or less.
6 more elements
Dependencies are inferred from the claim text.