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Battery pack

A battery pack, battery technology, applied in the direction of batteries, battery covers/end covers, battery pack components, etc., can solve the problem of increasing the volume of battery packs

Active Publication Date: 2019-11-15
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The battery pack described in Japanese Patent Application Laid-Open No. 2010-108788 has an exhaust pipe provided with a buffer material in the passage, but requires a space for arranging the exhaust pipe between the discharge valve and the case, and the volume of the battery pack increases. increase accordingly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0028] Below, use Figure 1 ~ Figure 3 The configuration of the battery pack according to Embodiment 1 of the present disclosure will be described. In the figure, the X direction represents the stacking direction of the cells, and the Y direction represents the direction perpendicular to the X direction and along the bottom surface of the battery pack. The Z direction indicates a direction perpendicular to the bottom surface of the battery pack, and may be referred to as "upper side" or the like hereinafter.

[0029] figure 1 It is a perspective view of the battery pack according to Embodiment 1. figure 1 In , the battery pack is shown in a state where the upper case (described later) is removed so that the middle (upper part) of the battery pack can be seen.

[0030] figure 2 yes figure 1 A cross-sectional view of the battery pack shown. figure 2 In , a section along the YZ plane is shown. in addition, figure 2 In , a cross section of a state where the upper case i...

Embodiment approach 2

[0057] In Embodiment 2, a configuration is shown in which the restraint bands constraining the battery packs 10A, 10B in the stacking direction of the cells 12 also serve as plates provided between the drain valve 14 and the upper case 24 . Accordingly, it is not necessary to separately provide the plates 30A and 30B described in Embodiment 1, and the number of parts can be reduced.

[0058] Below, use Figure 6 ~ Figure 8 , the structure of the battery pack according to Embodiment 2 of the present disclosure will be described.

[0059] Image 6 It is a perspective view of the battery pack according to Embodiment 2. Image 6 in, with figure 1 Similarly, the battery pack is shown with the upper case 24 removed so that the middle (upper portion) of the battery pack can be seen.

[0060] Figure 7 yes Image 6 Side views of battery packs 10A, 10B are shown. Figure 7 In , the side surfaces of the battery packs 10A and 10B viewed from the X direction are shown.

[0061] ...

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PUM

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Abstract

The invention provides a battery pack. Each cell (12) forming a battery stack (10A, 10B) has a discharge valve (14) configured to discharge gas in the inside to the outside when an internal pressure increases. A case (20) houses the battery stack (10A, 10B). A plate member (30A, 30B) is provided between each discharge valve (14) and an upper case (24). The plate member (30A, 30B) is arranged to overlap with each discharge valve (14) when the battery stack (10A, 10B) and the plate member (30A, 30B) are planarly viewed from above.

Description

technical field [0001] The present disclosure relates to a battery pack, and more particularly, to a battery pack in which a battery having a discharge valve configured to discharge internal gas to the outside when internal pressure rises is accommodated in a case. Background technique [0002] Japanese Patent Application Laid-Open No. 2010-108788 discloses a battery pack (battery system) in which a battery having the above-mentioned discharge valve is accommodated in a case. This battery pack includes: a battery pack (battery block) composed of a plurality of prismatic cells each having a gas discharge valve; a case (exterior case) for accommodating the battery pack; and an exhaust pipe connected to the discharge valve of each battery. . A buffer material having numerous pores through which gas can flow is provided inside the exhaust pipe. Thereby, the energy of the gas discharged from the discharge valve can be weakened through the discharge pipe, and the gas can be disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M50/209H01M50/271
CPCH01M2220/20H01M50/271H01M50/209Y02E60/10H01M50/342
Inventor 来间雄介井上重行
Owner TOYOTA JIDOSHA KK