Explosion-proof structure of power battery and electric vehicle
A power battery and explosion-proof structure technology, which is applied in the direction of electric vehicles, battery/battery traction, structural parts, etc., can solve the problems of power battery explosion and achieve the effect of preventing explosion
Active Publication Date: 2018-09-21
BEIJING ELECTRIC VEHICLE
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Problems solved by technology
[0003] In order to solve the above technical problems, the present invention provides an explosion-proof structure of a power battery and a vehicle, which solves the explosion problem caused by the rapid rise of the internal temperature and pressure of the power battery
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[0026] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0027] Embodiments of the present invention provide an explosion-proof structure of a Chinese power battery and an electric vehicle to solve the problem of explosion caused by a rapid rise in temperature and pressure inside the battery.
[0028] Such as Figure 1 to Figure 3 As shown, the embodiment of the present invention provides an explosion-proof structure of a power battery, which specifically includes: a box body, a box cover 1 and an ex...
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The invention discloses an explosion-proof structure of a power battery and an electric vehicle, comprising: a box body for carrying the power battery, the box body is provided with a first opening structure; the box cover is closed on the box body by matching with the first opening structure Above, the box cover is provided with a second opening structure; and an explosion-proof valve, the explosion-proof valve includes: a cover-type valve body, a connection part fixed at the center of the cover-type valve body at one end, a plurality of reed structures connected to the other end of the connection part, The reed structure is arranged in a preset radian, and the end of the reed structure abuts against the edge of the second opening structure of the case cover. In the present invention, when the reed structure is in the initial state, under the action of the elastic force of the reed structure, the cover valve body covers the second opening structure and clings to the box cover; when the gas pressure in the box exceeds the preset threshold, the reed The structure deforms under the action of gas pressure. Under the action of the deformation force, the cover valve body breaks away from the box cover and forms a gas channel to achieve the purpose of rapid pressure relief and prevent the battery from exploding.
Description
technical field [0001] The invention relates to the field of electric vehicle battery design, in particular to an explosion-proof structure of a power battery and an electric vehicle. Background technique [0002] With the rapid development of electric vehicles, battery packs, as the core key components of electric vehicles, have higher and higher safety requirements. In extreme cases, when the internal short circuit of the battery pack or thermal runaway of the cells occurs, the internal temperature and pressure of the battery pack will rise rapidly. At this time, it is difficult to quickly exhaust the battery pack, which will cause the battery pack to explode due to excessive expansion. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an explosion-proof structure of a power battery and a vehicle, which solves the explosion problem of the power battery caused by a rapid rise in internal temperature and press...
Claims
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IPC IPC(8): H01M2/10H01M2/12H01M2/04B60L11/18H01M50/147H01M50/20H01M50/204H01M50/30H01M50/325H01M50/342H01M50/383
CPCB60L50/50H01M50/147H01M50/30H01M50/20H01M50/325H01M50/383H01M50/342Y02T10/70Y02E60/10
Inventor 王诗涛李彦良程永周杨重科李玉军
Owner BEIJING ELECTRIC VEHICLE