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Control apparatus and control method for lithium-ion secondary battery

A technology of secondary battery and control device, which is applied in the direction of secondary battery, battery circuit device, secondary battery repair/maintenance, etc., can solve the problem of restricting the charging and discharging of lithium ion secondary battery, etc., and achieve the effect of easy performance

Active Publication Date: 2014-08-27
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Patent Document 1, since the predetermined temperature is a fixed value, the charging and discharging of the lithium-ion secondary battery may be unnecessarily restricted.

Method used

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  • Control apparatus and control method for lithium-ion secondary battery
  • Control apparatus and control method for lithium-ion secondary battery
  • Control apparatus and control method for lithium-ion secondary battery

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Embodiment 1

[0032] use figure 1 , a battery system as Embodiment 1 of the present invention will be described. figure 1 It is a figure which shows the structure of a battery system. The battery system of this embodiment can be mounted on a vehicle.

[0033] The battery system of this embodiment has a battery pack 10 . The battery pack 10 has a plurality of cells 11 connected in series. The unit cell 11 uses a lithium ion secondary battery. The number of cells 11 can be appropriately set based on required output and the like. In this embodiment, the plurality of single cells 11 are connected in series, but the battery pack 10 may include a plurality of single cells 11 connected in parallel.

[0034] The voltage sensor 21 detects the voltage between the terminals of the battery pack 10 and outputs the detection result to the controller 30 . On the other hand, a voltage sensor may be used to detect the voltage of each single cell 11 or to detect the voltage of a battery block including...

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PUM

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Abstract

The invention provides a control apparatus. The control apparatus performs charging / discharging of a lithium ion secondary battery so as to accommodate the heat resistant temperature thereof. [Solution] This apparatus for controlling charging / discharging of a lithium ion secondary battery has a controller, and a temperature sensor that acquires a temperature of the lithium ion secondary battery. The controller controls the charging / discharging of the lithium ion secondary battery, and maintains the temperature acquired using the temperature sensor at a temperature lower than an allowable upper limit temperature of the lithium ion secondary battery by controlling the charging / discharging of the lithium ion secondary battery. Furthermore, the controller estimates a lithium deposition quantity of the lithium ion secondary battery, and reduces the upper limit temperature corresponding to an increase of the deposition quantity.

Description

technical field [0001] The invention relates to a control device and a control method for controlling charging and discharging of a lithium ion secondary battery. Background technique [0002] In the technique described in Patent Document 1, an upper limit electric power that allows charge and discharge of the secondary battery is set in accordance with the temperature of the secondary battery. Furthermore, charge and discharge of the secondary battery are controlled so that the electric power of the secondary battery does not exceed the upper limit electric power. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2003-219510 [0004] Patent Document 2: Japanese Patent Laid-Open No. 2010-086901 [0005] Patent Document 3: Japanese Unexamined Patent Publication No. 2010-108750 [0006] Patent Document 4: Japanese Patent Laid-Open No. 2010-137807 [0007] Patent Document 5: Japanese Patent Laid-Open No. 2010-273492 [0008] In the technique described in Patent Doc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/44
CPCH02J7/0052H01M10/0525H01M10/486H01M10/44H01M10/48H01M10/482H01M10/052Y02E60/10G01R31/392H01M10/425H02J7/00
Inventor 高桥贤司
Owner TOYOTA JIDOSHA KK
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