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1. (WO2014192094) LITHIUM ION SECONDARY BATTERY

Pub. No.:    WO/2014/192094    International Application No.:    PCT/JP2013/064878
Publication Date: Fri Dec 05 00:59:59 CET 2014 International Filing Date: Thu May 30 01:59:59 CEST 2013
IPC: H01M 10/0587
H01M 2/02
H01M 10/052
H01M 10/0566
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: ARISHIMA Yasuo
有島 康夫
Title: LITHIUM ION SECONDARY BATTERY
Abstract:
The objective of the present invention is to provide a highly reliable lithium ion secondary battery which is suppressed in increase of the pressure within the battery caused by gas generation for the purpose of suppressing swelling of the battery and enables the production of a battery module for in-vehicle use without any difficulty, said swelling being caused by the increase of the pressure within the battery and leading to variation of the battery thickness and increase of the fastening force of the battery. A lithium ion secondary battery (22) according to the present invention is characterized by containing a clathrate compound in a battery can (11), said clathrate compound being one or more compounds selected from among cyclodextrins, calixarenes and crown ethers. Due to this configuration, the CO gas, CO2 gas and H2 gas within the battery can (11) are absorbed and swelling of the battery due to the gases is suppressed.