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battery pack

A battery pack and battery technology, applied in battery temperature control, battery circuit devices, battery/battery traction, etc., can solve the problem of output reduction and achieve the effect of reducing power consumption

Active Publication Date: 2015-09-02
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In secondary batteries, when the temperature decreases, the output sometimes decreases

Method used

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Embodiment 1

[0023] The battery pack as the first embodiment of the present invention will be described. figure 1 It is a diagram showing the internal structure of the battery pack of this embodiment.

[0024] The battery pack 1 has a plurality of single cells 10 and a case 20 that houses the plurality of single cells 10. The housing 20 has a housing body 21 and a cover 22. The cover 22 is fixed to the upper end of the casing main body 21 and closes the opening 21 a formed in the casing main body 21.

[0025] The multiple single cells 10 housed in the housing 20 are figure 2 Configure as shown. in figure 1 with figure 2 Among them, the X axis, Y axis, and Z axis are mutually orthogonal axes. The plurality of single cells 10 are arranged side by side in the Y-Z plane. Multiple single cells 10 can also be combined with figure 2 The arrangement shown is configured in a different arrangement. In addition, the number of single cells 10 can be appropriately selected in consideration of the inp...

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PUM

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Abstract

A battery pack includes a first battery and a second battery connected electrically in parallel and performing charge and discharge, and a heater generating heat. The first battery can perform charge and discharge with a current larger than that of the second battery. The second battery has an electric storage capacity larger than that of the first battery. The heater is placed at a position closer to the first battery than the second battery.

Description

technical field [0001] The present invention relates to a battery pack (battery park) in which a high-power battery and a high-capacity battery are electrically connected in parallel. Background technique [0002] In secondary batteries, when the temperature decreases, the output sometimes decreases. Therefore, there is a technique of heating the secondary battery in order to suppress a decrease in the output of the secondary battery. When a battery pack is formed using a plurality of secondary batteries, the entire battery pack is heated. [0003] Patent Document 1: Japanese Patent Application Laid-Open No. 11-332023 [0004] Patent Document 2: Japanese Patent No. 04082147 [0005] Patent Document 3: Japanese Patent Laid-Open No. 2006-079987 [0006] Patent Document 4: Japanese Patent Laid-Open No. 2003-086254 Contents of the invention [0007] When the heater is used to heat the entire battery pack, the size of the heater increases, or the power consumption of the h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/60
CPCH02J2007/0067B60L1/06B60L2240/545B60L11/1868B60L11/1875Y02T10/7005Y02T10/7066B60L11/1879B60L58/20B60L58/27B60L50/64Y02T10/70H02J7/007192
Inventor 木村健治
Owner TOYOTA JIDOSHA KK