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A power battery balance explosion-proof device

A technology of power battery and explosion-proof device, which is applied to batteries, battery pack components, circuits, etc., can solve the problems of complicated assembly and maintenance, reserved space for battery packs, etc., to facilitate the replacement of drying medium tubes, simplify the assembly process, The effect of reducing complexity

Active Publication Date: 2020-11-13
GEELY AUTOMOBILE INST NINGBO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] A further object of the present invention is to solve the problem in the prior art that a space needs to be reserved during the assembly process of the battery pack, which makes assembly and maintenance complicated and cumbersome

Method used

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  • A power battery balance explosion-proof device
  • A power battery balance explosion-proof device
  • A power battery balance explosion-proof device

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Embodiment Construction

[0031] figure 1 It is a schematic explosion diagram of a power battery balance explosion-proof device 100 according to an embodiment of the present invention. Such as figure 1 As shown, the power battery balance explosion-proof device 100 of the present invention is arranged at the power battery casing 10 for directional release of heat when the power battery is in a thermal runaway state, and may include a protective cover 20, a base 30, and a drying medium tube 50 and diaphragm 40 . Wherein, the protective cover 20 is used to protect the power battery, and the protective cover 20 is provided with a first hollow portion 28 to allow gas exchange between the inside and the outside of the power battery case 10, and the hollow portion is also provided with Thimble 24. The base 30 is disposed on the periphery of the protective cover 20 for fixing the protective cover 20 to the power battery casing 10 . The drying medium pipe 50 is detachably connected with the protective cover...

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Abstract

The invention provides a power battery balance explosion-proof device and relates to the technical field of battery explosion-proof valves. The power battery balance explosion-proof device of the present invention comprises a protective cover, a base, a diaphragm and a dry medium pipe. The protective cover is used to protect the power battery. The base is used to fix the protective cover on the case of the power battery. The drying medium pipe is used for absorbing water vapor inside the casing of the power battery. The diaphragm is used to prevent water from entering the interior of the power battery and allow the gas to pass through. The diaphragm is punctured by the thimble when the thermal runaway state of the power battery occurs, so that the heat inside the power battery casing is directional released from the diaphragm and the first hollow part to the outside of the power battery casing. The invention integrates the drying medium tube, which can absorb the water vapor entering the power battery casing, and reduces the complexity of air dryer fixing, space reservation and production assembly in the design stage of the power battery casing.

Description

technical field [0001] The invention relates to the technical field of battery explosion-proof valves, in particular to a power battery balance explosion-proof device. Background technique [0002] With the increasingly severe energy situation and the gradual strengthening of people's awareness of environmental protection, new energy vehicles have gradually entered the daily lives of ordinary people, followed by continuous innovation of related technologies. Continuously reducing costs and continuously improving customer experience have become the main means for manufacturers to grasp the core competitiveness of the market. At present, most of the batteries used in the power supply system of new energy vehicles are ternary batteries. The heat and gas speed instantaneously discharged by the ternary battery in the state of thermal runaway, if not well controlled, are enough to cause the battery pack to explode. Or non-directional release of energy, severe cases even lead to c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/12B01D53/26H01M50/30
CPCB01D53/263H01M2220/20H01M50/394Y02E60/10
Inventor 于林占莉潘福中
Owner GEELY AUTOMOBILE INST NINGBO CO LTD
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