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Electricity storage device and vehicle including the same

A technology for power storage devices and vehicles, which is applied in the directions of exhaust plug devices, capacitor casings/packages, circuits, etc., can solve the problems of increasing the size and weight of power storage devices, reducing the internal pressure of containers, etc.

Inactive Publication Date: 2009-09-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] First, when the internal pressure of the container rapidly rises due to the gas generated in the battery cell(s), it is difficult to quickly reduce the internal pressure of the container by discharging the gas through the gas discharge pipe
[0008] Second, the pressure resistance of the container needs to be increased, so the size and weight of the power storage device may need to be increased

Method used

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  • Electricity storage device and vehicle including the same
  • Electricity storage device and vehicle including the same
  • Electricity storage device and vehicle including the same

Examples

Experimental program
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Effect test

no. 1 example

[0035] figure 1 It is an exploded perspective view of the power storage device. figure 2 is a cross-sectional view of the power storage device. In these drawings, the power storage device 1 includes: a battery pack (power storage unit, power storage element assembly) 12; a battery case (first container) 13 that accommodates the battery pack 12 and a coolant 23; a case cover ( upper wall portion) 14, which serves as the top cover of the battery case 13. Such a power storage device is used, for example, as a driving power source or an auxiliary power source for a hybrid vehicle or an electric vehicle.

[0036] A gas discharge pipe (first discharge passage) 15 and an elastic container (second container) 16 are connected to a case cover 14 serving as a top cover of the battery case 13, and the gas discharge pipe 15 and the elastic container 16 are used for To discharge gas to the outside of the battery case when a battery abnormality occurs.

[0037] When a battery abnormalit...

no. 2 example

[0086] The following will refer to Figure 6 The power storage device 101 of the second embodiment will be described. Figure 6 is a cross-sectional view of the power storage device 101, in which the same constituent elements as those of the first embodiment are denoted by the same reference numerals.

[0087] A pressure safety chamber (second container) 51 is fixed on the upper surface of the case cover 14 . The pressure safety chamber 51 is connected to the battery case 13 via the rupture valve 41 of the container. Examples of materials for the pressure safety chamber 51 include metal materials such as stainless steel having high thermal conductivity. The pressure resistance of the pressure safety chamber 51 is set to be the same as that of the battery case 13 .

[0088] As in the case of the first embodiment, the gas discharge pipe 15 is provided with a separation labyrinth chamber 17 .

[0089] The operation of the power storage device 101 that occurs when a battery abno...

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Abstract

An electricity storage device (1) has an electricity storage unit (12) and a first container (13) in which the electricity storage unit (12) is contained, wherein, when an electricity storage unit abnormality occurs in which gas is produced in the electricity storage unit (12), the gas is- discharged from the electricity storage unit (12) into the first container (13). The electricity storage device (1) is characterized by including: a first discharging channel (15) for discharging the gas in the first container (13) into the outside of a vehicle; and a second discharging channel (13b) for discharging the gas in the first container (13) into a second container (16).

Description

technical field [0001] The present invention relates to an electrical storage device in which a container accommodates an electrical storage unit and a coolant for cooling the electrical storage unit. Background technique [0002] In recent years, electric vehicles such as electric vehicles and hybrid vehicles have been actively developed. Secondary batteries excellent in performance, reliability, and safety are increasingly required to be used as a driving power source or an auxiliary power source for such electric vehicles. [0003] In the field of electric vehicles, a driving power source or an auxiliary power source is required to have a high energy density. As an example of such a power source, there is an electric storage device having a container containing a battery pack in which a plurality of battery cells are connected in series or in parallel, and a coolant for cooling the battery pack. cool down. The container includes a container body and a top cover, the up...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/50H01G2/08H01G9/12H01G9/26H01G11/00H01G11/10H01G11/14H01G11/18H01M2/10H01M10/60H01M10/613H01M10/617H01M10/625H01M10/653H01M10/655H01M10/6551H01M10/6556H01M10/6567
CPCY02E60/12H01M10/5004H01M10/5075H01M10/5046H01M2/12H01M10/5016H01M10/503H01M10/625H01M10/6551H01M10/6567H01M10/643H01M10/613Y02E60/10H01M50/30
Inventor 村田崇
Owner TOYOTA JIDOSHA KK
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