Power-off protection device and protection method after electric vehicle collision
A power-off protection device, electric vehicle technology, applied in electric vehicles, electrical devices, signal devices, etc., can solve problems such as power battery short circuit, fire, safety hazards, etc., to avoid short circuit, ensure safety, and improve safety performance Effect
Active Publication Date: 2017-07-25
CHAOWEI POWER CO LTD
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Problems solved by technology
[0003] The invention mainly solves the technical problem that when the electric vehicle collides, the power battery still outputs electric energy, which will easily cause the power battery to short-circuit, catch fire, or even explode and other high-voltage dangers, and there is a great potential safety hazard; it provides a A power-off protection device and protection method for an electric vehicle after a collision. When the electric vehicle collides, it can automatically cut off the high-voltage output of the power battery, thereby avoiding short-circuit, fire, explosion and other dangers, and effectively improving the safety performance of the electric vehicle. , to ensure the safety of pedestrians
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Embodiment
[0020] Embodiment: the power-off protection device after the electric vehicle collision of the present embodiment, such as figure 1 As shown, it includes a main control unit 1, an electric control switch 2, an alarm unit 7, ten vehicle body pressure sensors 3 and six energy storage unit pressure sensors 6, and the electric control switch 2 is installed in the electric vehicle energy storage unit box. One end of the control switch is connected to the total positive pole of the energy storage unit, and the other end is connected to the high-voltage output end located inside the box body, that is, the electric control switch 2 is connected in series with the high-voltage output end inside the box body of the electric vehicle energy storage unit 4, and the electric control switch 2 The control terminal and the control terminal of the alarm unit 7 are respectively connected to the output terminal of the main control unit 1, and the output terminals of the ten vehicle body pressure s...
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The invention relates to a power-off protection device and protection method after collision of an electric automobile. The power-off protection device comprises a master control unit, an electrical control switch, automobile body pressure sensors installed on an automobile body of the electric automobile and energy storage unit pressure sensors installed on an energy storage unit of the electric automobile, the electric control switch is in series connection at the high voltage output end of the inner side of a box body of the energy storage unit of the electric automobile, the control end of the electric control switch is connected with the output end of the master control unit, and the automobile body pressure sensors and the energy storage unit pressure sensors are connected with the master control unit. A power-off protection method comprises the steps that the automobile body pressure sensors and the energy storage unit pressure sensors detect pressure in real time and transmit the pressure to the master control unit, when the pressure value received by the master control unit exceeds the limit, it is judged that the collision happens to the electric automobile, the master control unit sends out a control signal to break the electric control switch, and the high voltage output of the energy storage unit of the electric automobile is switched off. By means of the power-off protection device and the protection method, hazards such as short circuit, fire and explosion after the collision happens to the electric automobile are avoided, and the safety performance is effectively improved.
Description
technical field [0001] The invention relates to an electric vehicle, in particular to a power-off protection device and a protection method for an electric vehicle after collision. Background technique [0002] At present, the number of severe weather conditions such as the greenhouse effect and smog is increasing day by day, seriously affecting people's normal life. Electric vehicles replace oil with electricity and realize zero emissions in the true sense. Its appearance will improve the weather and the environment. It has been greatly improved, but the safety of electric vehicles, especially the safety of power batteries, has always been an insurmountable problem. When an electric vehicle collides, the power battery will inevitably be under tremendous pressure, but at this time the power battery still outputs electric energy, which will easily cause the power battery to short circuit, catch fire, or even explode. Security risks. Contents of the invention [0003] The ...
Claims
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IPC IPC(8): B60L3/00B60Q9/00
Inventor 柯克余涛刘志彬潘耀强刘启凯
Owner CHAOWEI POWER CO LTD