High-voltage safety system of hybrid electric vehicle

A hybrid electric vehicle, high-voltage safety technology, applied to electric vehicles, vehicle components, electrical devices, etc., can solve problems such as unimaginable consequences, and achieve the effect of improving high-voltage safety

Inactive Publication Date: 2010-06-09
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

If leakage occurs, the consequences will be disastrous

Method used

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  • High-voltage safety system of hybrid electric vehicle
  • High-voltage safety system of hybrid electric vehicle

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Embodiment Construction

[0017] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0018] like figure 1 As shown, the high-voltage safety system of the hybrid electric vehicle includes the CAN bus and the power battery management system (shown in the dotted line box in the figure). etc. as a high-voltage node on the CAN bus. The power battery management system includes a central processing unit, a power battery, and switch one C1 and switch two C2 respectively connected to the two poles of the power battery. The above-mentioned high-voltage nodes are connected in parallel to the two poles of the power battery through switch one C1 and switch two C2. Each high-voltage node and power battery is equipped with an insulation detection module, which is used to detect the insulation resistance of the correspon...

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Abstract

The invention relates to a high-voltage safety system of a hybrid electric vehicle, belonging to the technical field of vehicle safety. The system solves the problems of high voltage and easy potential safety hazard forming of the traditional hybrid electric vehicles. The high-voltage safety system of the hybrid electric vehicle comprises a CAN (controller area network) bus and a power battery management system with a power battery, wherein a plurality of nodes and a whole vehicle controller are arranged on the CAN bus, and high-voltage nodes in the nodes are connected to both poles of the power battery in parallel; all the high-voltage nodes are respectively provided with an insulated detection module connected with the CAN bus, and the insulated detection module is used for detecting insulated resistance values of the corresponding high-voltage nodes over the ground and transmitting the resistance values to the whole vehicle controller through the CAN bus; and the whole vehicle controller is used for controlling the power battery management system to disconnect or maintain the power supply to the high-voltage nodes according to the magnitude of the insulated resistance values. The high-voltage safety system of the hybrid electric vehicle improves the high-voltage safety of the hybrid electric vehicles through the real-time detection of the insulated detection module and the coordination control of the whole vehicle controller.

Description

technical field [0001] The invention belongs to the technical field of automobile safety, and relates to a high-voltage safety system of a hybrid electric automobile. Background technique [0002] With the shortage of global oil resources and the increasingly serious environmental pollution, various energy-saving and environmentally friendly new energy vehicles are emerging, especially electric vehicles and hybrid vehicles are getting more and more attention and favor. [0003] In the electric vehicle system, in order to improve the overall efficiency of the electric drive system, the voltage level of the power battery used in the electric vehicle is getting higher and higher. For example, a plug-in hybrid vehicle uses a DC voltage level of 336V, including high voltage Power battery system, ISG motor, drive motor, charger and other high-voltage components, so the high-voltage safety of the vehicle is particularly important. This voltage level is much higher than the voltage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00B60R16/023
Inventor 李书福杨健赵福全郭永斌孙文凯李传海杨安志丁勇
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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