Title:
LITHIUM ION BATTERY MODULE AND METHOD FOR CHARGING LITHIUM ION BATTERY MODULE
Document Type and Number:
Japanese Patent JP2021044151
Kind Code:
A
Abstract:
To provide a lithium ion battery module which can be charged in such a way that any single cell is not overcharged without the need for a circuit for monitoring SOC of each single cell.SOLUTION: A lithium ion battery module comprises a battery pack arranged by connecting lithium ion battery unit cells in series. Each unit cell comprises a unit laminate including a set of a positive electrode current collector, a positive electrode active material layer, a separator, a negative electrode active material layer and a negative electrode current collector which are laminated in order, and an electrolyte solution. The positive and negative electrode current collectors each include a resin current collector layer. A positive electrode active material included in the positive electrode active material layer consists of a positive electrode active material having an olivine acid type crystal structure. The lithium ion battery module has a charging terminal for flowing a charging current through the battery pack, and a battery pack voltage-measuring terminal for detecting a voltage between opposing ends of the battery pack, but it does not have a unit cell voltage-measuring terminal for detecting a voltage between the positive and negative electrode current collectors of each unit cell.SELECTED DRAWING: Figure 1
Inventors:
OKURA MASATOSHI
KAWAKITA KENICHI
TSUCHIDA KAZUYA
HORIE HIDEAKI
KAWAKITA KENICHI
TSUCHIDA KAZUYA
HORIE HIDEAKI
Application Number:
JP2019165451A
Publication Date:
March 18, 2021
Filing Date:
September 11, 2019
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD
APB CORP
APB CORP
International Classes:
H01M10/0585; H01M4/58; H01M4/66; H01M10/052; H01M10/0566; H01M10/44; H01M50/543
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Attorney, Agent or Firm:
Atomi International Patent Office