Battery pack explosion-proof valve, battery pack and vehicle
A technology for battery packs and explosion-proof valves, applied to battery pack parts, circuits, electrical components, etc., can solve problems such as battery pack short circuit, poor reliability, battery pack seal failure, etc., to achieve the effect of ensuring safety and large air flow
Active Publication Date: 2019-06-21
SVOLT ENERGY TECHNOLOGY CO LTD
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Problems solved by technology
Existing explosion-proof valves are generally divided into two types: thimble blasting type and spring type. When the thimble type blasting battery pack is working under complex working conditions due to the poor reliability of the membrane, the thimble will breathe when the whole pack does not have thermal runaway. The membrane is punctured, causing the seal of the battery pack to fail. When the battery pack is working in the presence of water, the water in the external environment will enter the battery pack and cause the risk of a short circuit in the battery pack. The reliability of the spring type blasting is poor. , cannot achieve accurate blasting, if the spring fails in advance, its blasting function will also fail
Method used
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[0032] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.
[0033] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.
[0034] combine Figure 1-Figure 6 According to one aspect of the present invention, a battery pack explosion-proof valve is proposed, and the battery pack explosion-proof valve includes:
[0035] A valve body 1, the valve body 1 has a first end 2 and a second end 3, the first end 2 of the valve body 1 is used to connect with the battery pack casing, the inside of the valve body 1 is formed through the second end One end 2 and said second end 3 are channels 4 for allowing gas exchange between the inside and outside of the battery pack;
[0036] A protective cover 5, the protective cover 5 covers the second end 3 of the valve body 1 and is provided with a vent hole 8 capable of all...
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The invention relates to the technical field of battery protection equipment, and provides a battery pack explosion-proof valve, a battery pack and a vehicle. The battery pack explosion-proof valve comprises a valve body, a protective cover and a breathable film, wherein the valve body has a first end and a second end; the first end of the valve body is connected with a battery pack shell; a channel for carrying out gas exchange is formed in the valve body; the protective cover is detachably connected to the second end of the valve body and is provided with vent holes capable of allowing gas to pass through; and the breathable film is arranged between the protective cover and the valve body and is fixed on the valve body through glue. According to the explosion-proof valve disclosed by theinvention, the breathable film is fixed on the valve body of the explosion-proof valve by virtue of a back gluing mode, and the breathable film can fall immediately during blasting; and by adoption of the explosion mode, the air permeability after explosion is larger, the pressure release of the battery pack can be rapidly realized, and therefore the safety of the battery pack is ensured.
Description
technical field [0001] The invention relates to the technical field of battery protection equipment, in particular to a battery pack explosion-proof valve, a battery pack and a vehicle. Background technique [0002] The contemporary automobile industry is undergoing revolutionary changes, that is, traditional fuel vehicles are gradually being replaced by new energy vehicles, among which pure electric vehicles are emerging as a type of new energy vehicles, and many transmission fuel vehicle platforms directly replace the engine structure with power The battery pack structure replaces the power source of the car from fuel to batteries. With the decline of new energy subsidies, the design of low-cost battery packs has become the focus of the research and development of major battery factories. However, the premise of low cost must be the safety of the battery pack. First of all, the safety design of battery packs has become one of the hot spots in current new energy research. ...
Claims
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IPC IPC(8): H01M2/12
CPCY02E60/10
Inventor 陈许超王博文张海建唐丽娟樊少泽王斌宇
Owner SVOLT ENERGY TECHNOLOGY CO LTD