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Title:
BATTERY BLOCK
Document Type and Number:
WIPO Patent Application WO/2018/003290
Kind Code:
A1
Abstract:
In order to achieve very smooth discharge of internal gas from open exhaust valves, effectively inhibit the triggering of thermal runaway, and achieve a high degree of safety, this battery block is provided with: a plurality of cylindrical batteries (1) of each of which the two ends are formed as positive and negative electrodes; and a lead plate which is connected to the electrodes of the cylindrical batteries (1). The cylindrical batteries (1) are provided with battery cans having exhaust valves (16) provided to bottom plates (12). Bottom surface electrodes (15B) for connecting the lead plate are provided to the bottom plates (12) of the battery cans. Furthermore, ring-shaped thin-walled lines (17) which break at a threshold pressure are provided in the bottom plates (12). The insides of the thin-walled lines (17) form a set of the exhaust valves (16). The lead plate connected to the bottom surface electrodes (15B) has, provided in positions facing the exhaust valves (16), through holes (32) having an internal shape through which the exhaust valves (16) which have separated from the bottom plates (12) can pass. The bottom surface electrodes (15B) are provided further outside than the thin-walled lines (17). The lead plate is connected to the bottom surface electrodes (15B).

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Inventors:
KOUTARI MASATO
EGASHIRA TAKUYA
TAKATA HIROSHI
YASUI SHUNSUKE
Application Number:
PCT/JP2017/017449
Publication Date:
January 04, 2018
Filing Date:
May 09, 2017
Export Citation:
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Assignee:
SANYO ELECTRIC CO (JP)
International Classes:
H01M50/213; H01M50/503; H01M50/516; H01M50/522; H01M50/559; H01M50/548
Domestic Patent References:
WO2014156022A12014-10-02
Foreign References:
JP2009211906A2009-09-17
US20120077062A12012-03-29
Attorney, Agent or Firm:
TOKUDA Yoshiaki et al. (JP)
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