Bipolar battery control device for adjusting a voltage or capacitance in cells

• US 9,236,746 B2
• Filed: 08/03/2011
• Issued: 01/12/2016
• Est. Priority Date: 08/27/2010
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Kato, Yukinari, Abe, Takaaki, Shimoida, Yoshio, Miyazaki, Yasuhito
• Primary Examiner(s): Levin, Naum B
• Application Number:
  US13/812,295
• Publication Number:
  US 20130127422A1
• Time in Patent Office: 1,623 Days
• US Class Current: 1/1
• CPC Class Codes: H01M 10/0418 with bipolar electrodes
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery control device is provided that uses a discharge to adjust the capacitance of cells that form a bipolar battery and calculates the voltage increase value of the remaining cells that do not discharge to adjust capacitance if one or more cells, among all of the cells that form the bipolar battery, are discharged to adjust capacitance in a battery control device that controls voltage dispersion or volume dispersion between cells that form the bipolar battery; and setting the general discharge value when there is a discharge to adjust capacitance on the basis of the result of the voltage increase value calculation.

Claims

1. A bipolar battery control device comprising:

a controller programmed to adjust one of a voltage dispersion and a capacitance dispersion of one or more of a plurality of alternately laminated cells of a bipolar battery by discharging the bipolar battery such that some of the cells of the bipolar battery are discharged and some of the cells are not discharged, in which each of the cells includes a positive pole active material layer formed on one face and a negative pole active material layer formed on the other face, with a current collector formed of an electroconductive thin film between adjacent ones of the cells,

the controller being programmed to perform a voltage increase value calculation that calculates a voltage increase value of the cells of the bipolar battery that were not discharged after a discharge of the bipolar battery to adjust the one of the voltage dispersion and the capacitance dispersion carried out on one or more of the cells that form the bipolar battery,

the controller being programmed to determine a general discharge current value for discharging to adjust the capacitance based on a result of the voltage increase value calculation.

2. The bipolar battery control device as described in claim 1, wherein

the controller is further programmed to determine a number of cells to be discharged to adjust the capacitance from among all of the cells that form the bipolar battery based on the result of the voltage increase value calculation.

3. The bipolar battery control device as described in claim 2, wherein

the controller is further programmed to determine a discharge current value of the cells to be discharged to adjust the capacitance based on the result of the voltage increase value calculation.

4. The bipolar battery control device as described in claim 1, wherein

the controller is further programmed to determine a discharge current value of the cells to be discharged to adjust the capacitance based on the result of the voltage increase value calculation.