Title:
BATTERY CELL SWELLING ESTIMATION SYSTEM FOR ASSEMBLED BATTERY
Document Type and Number:
WIPO Patent Application WO/2017/022186
Kind Code:
A1
Abstract:
This battery cell swelling estimation system includes a battery module wherein a plurality of pouch-shaped battery cells are disposed in an arrangement, each of the battery cells having a power generating element capable of being charged and discharged, and an exterior body comprising a sheet material and housing the power generating element. The battery module has an internal flow path provided between at least some among adjacent battery cells, the internal side wall surfaces of the internal flow path being constituted by the side surfaces on the exterior bodies from the battery cells. The battery cell swelling estimation system includes: a refrigerant supply unit causing a refrigerant fluid to be supplied to and pass through the internal flow path of the battery module; a drive unit for driving the refrigerant supply unit; and a control device for estimating the amount of swelling for each battery cell on the basis of the acquired value of the load on the drive unit at charging time or discharging time of the battery module.
Inventors:
HASEGAWA TAKASHI
SHIMIZU KEISUKE
SHIMIZU KEISUKE
Application Number:
PCT/JP2016/003327
Publication Date:
February 09, 2017
Filing Date:
July 14, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M10/48; H01M10/613; H01M10/633; H01M10/647
Foreign References:
| JP2012150977A | 2012-08-09 | |||
| JP2001283937A | 2001-10-12 |
Attorney, Agent or Firm:
KAMATA, Kenji et al. (JP)
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