Title:
BATTERY PACK
Document Type and Number:
WIPO Patent Application WO/2019/171469
Kind Code:
A1
Abstract:
This battery pack (11), which comprises a battery case (12) in which a cell stack body (15) obtained by stacking a plurality of prismatic cells (14) is housed, is provided with an end plate (20) disposed on one end side of the cell stack body (15) in the stacking direction, a wedge member (19) disposed on the opposite side of the end plate (20) from the cell stack body (15), and a bolt (18) disposed in a bolt fastening direction that is orthogonal to the stacking direction and biasing the wedge member (19) toward a bottom wall (12c) of the battery case (12). First abutting surfaces (19b, 20a) on which the wedge member (19) and the end plate (20) abut one another are constituted from sloped surfaces, each sloping toward the bolt (18) in the bolt fastening direction. Thus, through a simple structure, the cell stack body (15) can be compressed strongly so as to suppress expansion of the prismatic cells (14), and furthermore, the energy density per volume can be raised while reducing the size and weight of the battery pack (11).
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Inventors:
SEKI HIDEMI (JP)
OHKUMA KANAE (JP)
OHKUMA KANAE (JP)
Application Number:
PCT/JP2018/008582
Publication Date:
September 12, 2019
Filing Date:
March 06, 2018
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
H01M50/209; H01M50/264
Foreign References:
| JP2018032519A | 2018-03-01 | |||
| JP2014044884A | 2014-03-13 | |||
| JP2014107270A | 2014-06-09 | |||
| JP2012204081A | 2012-10-22 | |||
| JP2017004693A | 2017-01-05 |
Attorney, Agent or Firm:
OCHIAI & CO. (JP)
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