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Power supply device

A power supply device and battery technology, which is applied to circuits, electrical components, battery pack components, etc., can solve the problems that the temperature of the gas that cannot be released is reduced to a safe temperature and cannot be released safely.

Pending Publication Date: 2021-09-28
PANASONIC ENERGY CO LTD MORIGUCHI SHI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The power supply device of Patent Document 1 discharges the high-temperature released gas discharged from the discharge valve through the perforated plate to the outside of the housing. However, this structure has the disadvantage that the temperature of the released gas cannot be lowered to a safe temperature. Cannot be released safely to the outside of the outer casing

Method used

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Embodiment approach 1

[0049] Figure 1 ~ Figure 3 The illustrated power supply device 100 accommodates a plurality of rechargeable batteries 1 in an exterior case 2 . The battery 1 is a secondary battery provided with a discharge valve, preferably a non-aqueous electrolyte secondary battery such as a lithium ion battery. Since the charge and discharge capacity of the non-aqueous electrolyte secondary battery is large relative to the weight and volume, it is possible to reduce the size and weight of the battery and increase the charge and discharge capacity. However, the present invention is not particularly limited to the non-aqueous electrolyte secondary battery, and all other secondary batteries currently used or to be developed can be used. The discharge valve of battery 1 opens when the internal pressure exceeds the set pressure. The discharge valve is opened when the internal pressure is higher than the set pressure to prevent the battery case from bursting. The discharge valve is opened un...

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Abstract

This power supply device comprises: a plurality of batteries comprising an exhaust valve that opens when the internal pressure becomes higher than a set pressure; and an exterior case that houses the batteries. The exterior case comprises an exhaust passage (4) of a gas collision structure via which gas emitted from the exhaust valve is discharged to the outside. The exhaust passage (4) of the collision structure comprises a first collision plate (11) that reverses the flow direction to reverse by allowing the emitted gas sprayed from the exhaust valve to collide with a surface, and a second collision plate (12) placed facing the first collision plate (11). The emitted gas sprayed from the exhaust valve is allowed to collide with the first collision plate (11) and the second collision plate (12) and discharged to the outside of the exterior case.

Description

technical field [0001] The present invention relates to a power supply device with a battery built in an outer casing, and more particularly to a power supply device with a battery built in an outer casing having a discharge valve that opens when the internal pressure is higher than a set pressure. Background technique [0002] A secondary battery provided with a discharge valve that opens when the internal pressure is higher than a set pressure can open the discharge valve when the internal pressure rises abnormally, thereby improving safety. It is important for the power supply device in which the battery is built in the exterior case to safely discharge the released gas discharged from the discharge valve to the outside of the exterior case. In particular, in a secondary battery using a non-aqueous electrolytic solution, high-temperature gas after vaporization of the electrolytic solution is released to the outside of the exterior case. In addition, disadvantages such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/204H01M50/244H01M50/358H01M50/227H01M50/298
CPCY02E60/10H01M50/204H01M50/317H01M50/367H01M50/298H01M50/207H01M50/227H01M50/209
Inventor 坂本知则山崎昭雄河村和宏泽田耕一村山智文
Owner PANASONIC ENERGY CO LTD MORIGUCHI SHI