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Battery pack

A battery pack and battery technology, applied in the direction of batteries, battery pack parts, secondary batteries, etc., can solve the problems of reduced heating efficiency, achieve effective heating, suppress dissipation, and prevent size increase

Active Publication Date: 2016-10-05
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, in Patent Document 3, one side of the heater is in contact with the battery holder, but the other side is exposed to the external space.
Therefore, part of the heat output from the heater is released to the external space before being transferred to the battery holder and / or the cylindrical battery, and there is a problem that the heating efficiency is lowered.

Method used

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Examples

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Embodiment Construction

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 is a schematic longitudinal sectional view showing the structure of the battery pack 10 as an embodiment of the present invention, figure 2 is a schematic cross-sectional view of the battery pack 10 . in addition, image 3 is an exploded perspective view of the battery module 20, Figure 4 is a perspective view of the battery module 20 . in addition, Figure 5 is a cross-sectional view of the battery module before assembling the heater, Image 6 It is an enlarged view of the surrounding area of ​​the heater assembly. In addition, as will be described below, each battery module 20 is a substantially rectangular parallelepiped, but in order to clarify the direction relationship, the long side direction of the battery module 20 will be referred to as the "front and rear direction", and the axial direction of each cylindrical battery 21 will be referred to as t...

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PUM

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Abstract

The present invention provides a battery pack. In a battery pack having one or more battery modules, each battery module includes a plurality of cylindrical batteries, and a battery holder made of heat conductive material, for holding the plurality of cylindrical batteries and forming a space between itself and an adjacent member, the space being at least partially open to the outside and the battery pack further includes a heater mounted in the space, for heating the plurality of cylindrical batteries via the battery holder, and an elastic member for urging the heater onto the battery holder, and closing an opening of the space to thereby form a first space closed from the outside.

Description

technical field [0001] The present invention relates to a battery pack having one or more battery modules including a plurality of cylindrical batteries. Background technique [0002] A battery pack in which a plurality of batteries are connected in series or in parallel is used in electric vehicles and the like. In this battery pack, if the temperature drops, there will be problems such as a drop in output and / or a drop in chargeable capacity. Therefore, conventionally, it has been proposed to provide a heater on the battery pack and to heat each battery by the heater at a low temperature. [0003] For example, Patent Document 1 discloses the following technology: a battery pack including: a plurality of cylindrical batteries; The sheet-shaped heater disposed between the inner surface of the battery storage space and the outer surface of the cylindrical battery heats the cylindrical battery. [0004] In addition, Patent Document 2 discloses a technology that includes: a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/617H01M10/643H01M10/6571H01M10/658H01M2/10H01M50/213
CPCH01M50/213H01M10/6571H01M10/615H01M10/625H01M2220/20Y02E60/10
Inventor 木村健治
Owner TOYOTA JIDOSHA KK
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