Title:
CONTROLLER OF SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2016197546
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress reduction of battery utilization efficiency, by executing dissolution control for dissolving a reaction participant precipitated in a negative electrode efficiently.SOLUTION: When the deposition amount of active lithium in the negative electrode of a lithium ion secondary battery exceeds a threshold, an ECU calculates the contact area S(precipitation form of active lithium) of the active lithium and negative electrode, and then calculates the dissolution rate Vof the active lithium by using the contact area Sof the active lithium and negative electrode. When the dissolution rate Vis larger than a threshold, the ECU executes a control for dissolving the active lithium by discharging the lithium ion secondary battery (hereinafter, referred to "lithium dissolution control", and does not execute lithium dissolution control when the dissolution rate Vis smaller than the threshold Vth.SELECTED DRAWING: Figure 3
Inventors:
KAIYA HIROYUKI
NISHI YUJI
TASHIRO HIROKI
NOSE MASAFUMI
NISHI YUJI
TASHIRO HIROKI
NOSE MASAFUMI
Application Number:
JP2015076944A
Publication Date:
November 24, 2016
Filing Date:
April 03, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M10/44; H01M10/42; H01M10/48
Attorney, Agent or Firm:
Fukami patent office