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Title:
NONAQUEOUS SECONDARY BATTERY AND BATTERY MODULE
Document Type and Number:
Japanese Patent JP2011103178
Kind Code:
A
Abstract:

To provide a nonaqueous secondary battery such as a lithium-ion secondary battery, which is free from deterioration of capacity, deterioration of positive electrode material, precipitation of metal lithium, or the like by solving a local potential distribution within a cell by sub-reaction in charging and discharging, and to provide a battery module.

In the nonaqueous secondary battery which includes a positive electrode, a negative electrode and an electrolyte, and charges and discharges electricity by repeating the reaction of releasing or absorbing ions from the positive electrode or negative electrode into the electrolyte, an ion supply source which elutes the same kind of ions as the ions used for the charge and discharge, a mesh electrode contacting a part of a surface of the negative electrode, and a diode disposed to connect the ion supply source to the mesh electrode with the mesh electrode side being + polarity are provided within the electrolyte inside the secondary battery.


Inventors:
YAMAMOTO TSUNENORI
OKUMURA TAKEFUMI
Application Number:
JP2009000256632
Publication Date:
May 26, 2011
Filing Date:
November 10, 2009
Export Citation:
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Assignee:
HITACHI LTD
International Classes:
H01M10/0587; H01M2/26; H01M10/0525; H01M10/0566
Domestic Patent References:
JPH08102333A1996-04-16
JP2007305475A2007-11-22
JP2009188141A2009-08-20
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda