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power storage device

A technology of electric storage devices and electric storage components, which is applied to circuits, electrical components, secondary batteries, etc., and can solve problems such as inability to impart binding force

Active Publication Date: 2016-12-28
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, if the binding force is applied only to the area where the reaction regions overlap with each other, the binding force will be applied only to a part of the cell, and the binding force will not be applied to the entire surface of the single cell receiving the binding force.

Method used

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Examples

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Embodiment 1

[0037] use figure 1 A battery pack (corresponding to a power storage device) as Embodiment 1 of the present invention will be described. figure 1 It is an external view of the battery pack of this embodiment. exist figure 1 Here, the X-axis, the Y-axis, and the Z-axis are mutually orthogonal axes, and in this embodiment, the axis corresponding to the vertical direction is formed as the Z-axis. The relationship between the X axis, the Y axis, and the Z axis is also the same in other drawings.

[0038] figure 1 The illustrated battery pack 1 can be mounted on a vehicle, for example. As vehicles, there are hybrid cars and electric cars. In such a vehicle, the electric energy output from the battery pack 1 can be converted into kinetic energy, and the vehicle can be driven using the kinetic energy. When the battery pack 1 is mounted on a vehicle, the battery pack 1 can be accommodated in a pack case.

[0039] The battery pack 1 has a plurality of single cells (corresponding...

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Abstract

The present invention provides a power storage device. The constraining force applied to each reaction region is equalized, and an equal constraining force is imparted to the entire electricity storage element. The power storage device includes a plurality of power storage elements arranged side by side in a predetermined direction, and a restraint plate disposed between two power storage elements adjacent in the predetermined direction. The power storage element has a power generating element for charging and discharging, and a case for accommodating the power generating element. The constraining plate has a protrusion that imparts a constraining force to the electric storage element and forms a space therebetween. The power generating element has a positive electrode plate, a negative electrode plate, and a separator arranged between the positive electrode plate and the negative electrode plate. In addition, the power generating element includes a reaction region where a chemical reaction accompanying charge and discharge occurs. The plurality of protrusions include a first protrusion in contact with the first area of ​​the housing and a second protrusion in contact with the second area of ​​the housing. The first area of ​​the case faces the reaction area, and the second area of ​​the case faces areas other than the reaction area in the power generating element.

Description

technical field [0001] The present invention relates to a power storage device provided with a mechanism for imparting a binding force to a plurality of power storage elements arranged side by side in one direction. Background technique [0002] There are cases where a battery pack is formed by arranging a plurality of single cells in one direction. In addition, a restraining force is given to a plurality of cells by using a restraining mechanism. The binding force is a force that separates the plurality of cells in the direction in which the cells are arranged. [0003] Specifically, as described in Patent Document 1, a partition plate is arranged adjacent to the cells, and the protrusions provided on the partition plates are brought into contact with the cells, whereby the cells are imparted from the partition plate. binding. Here, by using the protrusion, a space for moving the heat exchange medium used for temperature adjustment of the single cell is formed between th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/10H01M50/209H01M50/291
CPCH01M10/0468H01M10/0472H01M50/291H01M50/209H01M10/6556Y02E60/10Y02P70/50
Inventor 小林圭一郎斋藤平石井胜神谷正人
Owner TOYOTA JIDOSHA KK
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