Collision power-off protection system of electromobile

A power-off protection, electric vehicle technology, applied in the field of electric vehicles, can solve the problems of inability to receive signals from airbags, inability to normally implement safety protection strategies, casualty accidents, etc., to prevent further injuries, improve reliability and stability, The effect of improving safety

Active Publication Date: 2015-04-08
DONGFENG MOTOR CORP HUBEI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the collision power-off protection system of electric vehicles, the battery management unit and other vehicle control units only receive the CAN signal sent by the airbag, and often during the collision process due to the damage

Method used

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  • Collision power-off protection system of electromobile
  • Collision power-off protection system of electromobile
  • Collision power-off protection system of electromobile

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[0012] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0013] Such as figure 1 As shown, the present invention includes a vehicle control unit, a battery management unit, a power battery pack, an airbag controller, a body collision sensor, and a body controller. Among them, the vehicle control unit, battery management unit, airbag controller and body controller are connected through the car's CAN bus 2. In addition, wires 3 are connected between the airbag controller and the battery m...

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Abstract

The invention relates to the technical field of electromobiles, in particular to a collision power-off protection system of an electromobile. The system comprises a battery management unit, a power battery pack, a finished automobile control unit, an airbag controller, an automobile body collision sensor and an automobile body controller, wherein the battery management unit, the finished automobile control unit, the airbag controller and the automobile body controller are connected via a CAN (Controller Area Network) bus; the airbag controller is further connected with the battery management unit and the automobile body controller via wires; the airbag controller is connected with the automobile body collision sensor via a wire; and the battery management unit is connected with the power battery pack via a wire. The battery management unit, the finished automobile control unit and the automobile body controller of the system can simultaneously receive three types of signals emitted by an airbag, i.e., a CAN signal, a wire current signal and a radio signal. When any signal is received, the control units related to collision can implement passive safety protection measures of a vehicle, and the collision power-off reliability and stability are improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle collision power-off protection system. Background technique [0002] How to improve the safety of electric vehicles is an urgent problem to be solved in the promotion of electric vehicles. The "Safety Requirements After Electric Vehicle Collision" submitted for approval also put forward stricter requirements on the reliability and stability of electric vehicle collision safety. In the collision power-off protection system of electric vehicles, the battery management unit and other vehicle control units only receive the CAN signal sent by the airbag, and often during the collision process due to the damage or excessive length of the CAN bus of the vehicle, the battery management system will The battery management unit and other vehicle control units cannot normally execute relevant safety protection strategies, resulting in casualties. Contents of ...

Claims

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Application Information

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IPC IPC(8): B60R16/023B60L11/18B60L3/00
CPCB60L3/00B60L50/50B60R16/0231Y02T10/70
Inventor 刘爽吴杰余杨问弘龙曦怀慧刘坤夏洋
Owner DONGFENG MOTOR CORP HUBEI
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