System and method for improving safety of combustible working medium electric vehicle heat pump system
A heat pump system, electric vehicle technology, applied in heat pumps, vehicle parts, transportation and packaging, etc., can solve problems such as vehicle damage and explosion, and achieve the effect of improving safety
Pending Publication Date: 2022-04-29
XI AN JIAOTONG UNIV
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Problems solved by technology
When R290 leaks, there is still a certain probability of explosion in the front cabin of the car, causing damage to the vehicle
Method used
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[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0025] In order to better solve the safety problem of R290 and other flammable refrigerants applied to electric vehicle heat pump systems, the present invention provides a system and method for effectively preventing R290 and other flammable refrigerants from leaking and detonating in electric vehicle heat pump systems. Make full use of the mixing characteristics of R290 and other flammable refrigerants and inert gases, avoiding the possible explosion phenomenon of R290 and other flammable refrigerants mixed with air. Such as figure 1 As shown, the system for improving the safety of combustible working medium electric vehicle heat pump system in the present invention includes an integrated electric vehicle heat pump system 6 arranged inside the housing 4, an inert gas cylinder 2 is connected to the housing 4, and the housing 4 The interior of the housing is ...
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A system and method for improving safety of a combustible working medium electric vehicle heat pump system comprises an integrated electric vehicle heat pump system arranged in a shell, an inert gas cylinder is connected to the shell, and a pressure detection alarm system, a gas concentration detection alarm system and a temperature detection and spraying system are arranged in the shell. A cooling fan is arranged outside the shell; the pressure detection alarm system comprises a pressure sensor and a pressure alarm connected with the pressure sensor; the gas concentration detection alarm system comprises a gas concentration sensor used for detecting combustible working medium leakage and a gas concentration alarm connected with the gas concentration sensor. The temperature detection and spraying system comprises a temperature sensor and a spraying device. When the combustible working medium leaks, inert gas is injected into the shell to dilute the combustible working medium, and a cooling measure is taken to reduce the temperature of mixed gas, so that the combustible working medium is prevented from being directly leaked into a passenger compartment to be mixed with air to possibly generate burning explosion.
Description
technical field [0001] The invention belongs to the technical field of electric vehicle heat pump safety, and in particular relates to a system and method for improving the safety of combustible working medium electric vehicle heat pump systems. Background technique [0002] The development of electric vehicles has gradually become an important measure to solve high carbon emissions in the automotive field. At the same time, in view of the technical development requirements of using environmentally friendly refrigerants with low GWP values to replace traditional high-GWP refrigerants, R290 refrigerants have low GWP values and excellent performance. With thermophysical properties, it can meet the demands of high-temperature refrigeration in summer and low-temperature heating in winter, and can effectively improve the cruising range of electric vehicles in winter. It has become a new generation of environmentally friendly refrigerants with strong application prospects. Alt...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60H1/00B60H1/32F25B30/02
CPCB60H1/00507F25B30/02B60H1/3204B60H1/00792
Inventor 吴建华钟华张帅赵子博
Owner XI AN JIAOTONG UNIV