A shock-absorbing and heat-dissipating electric vehicle battery based on negative Poisson's ratio materials
A negative Poisson's ratio material, electric vehicle technology, applied in the direction of electric vehicles, batteries, secondary batteries, etc., can solve the problems of affecting the normal driving of the car, affecting the working performance of the battery, and prone to vibration, etc., to achieve excellent heat absorption capacity, The effect of reducing deformation and facilitating maintenance
Active Publication Date: 2021-09-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0002] Electric vehicle batteries are prone to vibration when the car is driving on a bumpy road or rapidly accelerating or decelerating. The collision between the battery and the external box can easily damage the battery. Therefore, it is necessary to carry out shockproof design for the battery structure.
In addition, electric vehicle batteries will generate a lot of heat after working for a long time. If the box is not cooled in time, it will seriously affect the working performance of the battery, thereby affecting the normal driving of the car. the design of
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[0038] The specific parameters of the battery box designed in this patent are: the outer box is 896mm long, 489mm wide, and 297mm high, and each battery module is 230mm long, 150mm wide, and 235mm high. The thickness of each box plate is 25mm, the thickness of the heat conduction plate of the aluminum alloy plate is 5mm, the thickness of the negative Poisson’s ratio filling is 15mm, and the thickness of the heat absorbing plate of the carbon fiber plate is 10mm. control Figure 5 For the parameters of the negative Poisson's ratio cell shown, the parameters of the designed cell are d=e=f=g=2mm, β=σ=79°, θ=68°. Negative Poisson's ratio cell thickness t=0.8mm, height h=1mm.
[0039] When the vehicle body shakes violently due to road bumps, rapid acceleration and deceleration, the two-stage shock-absorbing structure inside the battery box will better play a cushioning role. Due to the excellent energy absorption effect of the negative Poisson's ratio material, when the battery bo...
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Abstract
The invention discloses a shock-absorbing and heat-dissipating electric vehicle battery based on a negative Poisson's ratio material, which is composed of a battery pack and a battery module inside its casing. A battery module is installed; several grooves are opened on the four walls of each groove, and each groove is connected with a telescopic column through a spring; The filling layer of Soson's ratio material and the heat-absorbing layer of carbon fiber plate are connected by glue; each three-dimensional structure of negative Poisson's ratio is formed by two pieces of negative Poisson's ratio cells crossing at 90°; the shell of the battery pack The outside wraps a circle of shell, and the shell is formed by sealing and combining the bottom plate, the top plate and the surrounding plates. This patent adopts two-stage cushioning measures. The first stage cushioning is filled with a negative Poisson's ratio structure. The second stage cushioning measure is that each groove is equipped with telescopic columns, and each telescopic column and the groove on the groove wall Springs are installed between them, and the two-stage cushioning makes the cushioning effect more excellent.
Description
technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a shock-absorbing and heat-dissipating electric vehicle battery based on negative Poisson's ratio materials. Background technique [0002] Electric vehicle batteries are prone to vibrations when the car is driving on bumpy roads or rapidly accelerating or decelerating. The collision between the battery and the external box can easily damage the battery. Therefore, it is necessary to carry out shockproof design for the battery structure. In addition, electric vehicle batteries will generate a lot of heat after working for a long time. If the box is not cooled in time, it will seriously affect the working performance of the battery, thereby affecting the normal driving of the car. the design of. Contents of the invention [0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a shock-absorbin...
Claims
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IPC IPC(8): H01M50/204H01M50/242H01M50/244H01M50/249H01M10/613H01M10/625H01M10/653H01M10/6554H01M10/6556H01M10/6567H01M10/6568F16F15/02F16F15/04B60L58/26
CPCH01M10/613H01M10/625H01M10/653H01M10/6554H01M10/6556H01M10/6567H01M10/6568F16F15/022F16F15/04B60L58/26H01M2220/20H01M50/20Y02T10/70Y02E60/10
Inventor 周冠闫鹏飞赵万忠王源隆王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS