Active and passive combined protection system and method based on battery pack buffer device
A buffer device and protection system technology, applied to battery pack components, power system fuel cells, circuits, etc., can solve problems such as secondary accidents, complex structures, and threats to the safety of electric vehicle occupants, and achieve reliable performance and reasonable design Effect
Inactive Publication Date: 2016-06-22
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
The existence of secondary accidents threatens the safety of electric vehicle occupants and also increases the difficulty of accident handling
However, the structure of this technology is complicated, and when the force of collision and extrusion is too large, the power battery that has not been powered off still has the risk of causing a secondary accident
Method used
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Embodiment 1
[0024] like figure 1 As shown, this embodiment relates to an active-passive combined protection system based on a battery pack buffer device, including: a battery pack buffer device, a processing unit, an acceleration module and an ultrasonic distance measuring module, wherein: the acceleration module is arranged on the battery pack buffer device The surface is used to monitor the impact on the body of the electric vehicle; the ultrasonic ranging module is arranged on the vehicle body to monitor the distance between the electric vehicle and other vehicles.
[0025] The described acceleration module is ADXL345, and the ultrasonic ranging module is HC-SR04.
[0026] like figure 2 and image 3 As shown, the battery pack buffer device includes: a pair of torsion spring rods 3, eight buffer rods 2 and a pair of matt-shaped confronting surfaces 1 arranged in parallel, wherein: one end of the buffer rod 2 and the end of the torsion spring rod 3 5 links to each other, and the othe...
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The invention relates to an active and passive combined protection system and method based on a battery pack buffer device. The active and passive combined protection system comprises the battery pack buffer device, a processing unit, an acceleration module and an ultrasonic ranging module, wherein the acceleration module is arranged on the surface of the battery pack buffer device, the ultrasonic ranging module is arranged on a vehicle body, and a singlechip microcomputer is connected with the acceleration module and the ultrasonic ranging module separately; when an electromobile is not collided, the singlechip microcomputer is used for judging whether a power-off signal is sent to a battery pack or not according to a real-time distance measuring result of the ultrasonic ranging module; and when the electromobile is collided, the battery pack buffer device is used for releasing and buffering the built-in battery pack, and the singlechip microcomputer is used for judging whether the power-off signal is sent to the battery pack or not according to an acceleration measurement result obtained by the acceleration module connected with the battery pack buffer device. The active and passive combined protection system is reasonable in design, has flexible functions and is simple to maintain, and the installation direction and the set parameter can be selected according to demands.
Description
technical field [0001] The invention relates to a technology in the field of electric vehicles, in particular to an active-passive combination protection system and method based on a battery pack buffer device. Background technique [0002] With the development of the economy, the automobile market has developed rapidly in the past ten years. Especially in recent years, as an important branch of the automobile industry, the electric vehicle industry has shown a rapid growth trend. As a result, the number of traffic accidents related to electric vehicles continues to rise. When an electric vehicle collides with two vehicles, if the battery pack is damaged and ruptured, the leaked electrolyte will create a short circuit outside the battery, causing secondary accidents such as fire and explosion. The consequences of accidents with electric vehicles tend to be more severe than with conventional vehicles. The existence of secondary accidents threatens the safety of electric ve...
Claims
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IPC IPC(8): H01M2/10H01M2/34H01M50/20H01M50/249H01M50/579
CPCH01M2250/20H01M50/20H01M50/579Y02E60/50Y02E60/10
Inventor 张东明张晓云杨小波
Owner SHANGHAI JIAO TONG UNIV