An electric vehicle high voltage safety protection system and method thereof
A high-voltage safety and protection system technology, applied to electric vehicles, electrical devices, vehicle components, etc., can solve problems such as the inability to accurately determine the failure of a connector
Active Publication Date: 2015-12-09
SHANGHAI YIRUI AUTOMOBILE TECH
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Problems solved by technology
[0005] The purpose of the present invention is to provide a new high-voltage safety protection system for electric vehicles to overcome the defect that the high-voltage circuit protection system cannot accurately determine which connector has failed in the prior art, and to monitor the high-voltage connectors in groups; and for electric vehicles In case of accidental loosening or disconnection of medium and high voltage connectors, a reasonable design is carried out to provide a more reasonable and reliable safety protection method
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[0034] The present invention will be further described below in conjunction with the embodiment that accompanying drawing provides:
[0035] Such as figure 1 As shown, the present invention includes a low-voltage monitoring circuit 5, a voltage sampling module 4, a diagnostic strategy module 3 and a fault processing module 2; the low-voltage monitoring circuit 5 is provided with three voltage collection points, namely a voltage collection point A and a voltage collection point B , voltage collection point C; the voltage collection point A, the voltage collection point B, and the voltage collection point C each lead to a voltage sampling line branch a, b, c; the voltage sampling line branch a, b, c are connected to the voltage sampling line respectively The module is electrically connected, and is mainly used to collect the real-time voltage values of voltage collection point A, voltage collection point B, and voltage collection point C; the voltage sampling module 4 is elect...
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The invention aims at the high voltage connector accidental loosening and breakage faults and discloses a reasonable, safe and reliable Electric vehicle high voltage safety protecting system and method. The system mainly comprises a low voltage monitoring line, a voltage sampling module, a diagnosing strategy module and a fault processing module. Three voltage collecting points A, B and C are disposed on the low voltage monitoring line and guide out three voltage sampling branches a, b and c. The voltage sampling branches a, b and c are respectively electrically connected with the voltage sampling module. The voltage sampling module is electrically connected with the diagnosing strategy module. The diagnosing strategy module is electrically connected with the fault processing module. The low voltage monitoring line is set in a fragmentation manner, danger levels are judged according to breakage conditions of high voltage connectors during travelling, pre-warning signals are given timely, reasonable fault processing measures are taken according to the fault levels obtained by diagnosing and the current vehicle work conditions, and safety of electric vehicles is increased.
Description
Technical field: [0001] The invention relates to the application of electric vehicles, in particular to the field of high-voltage safety protection and control of electric vehicles. Background technique [0002] At present, most pure electric vehicles or hybrid vehicles use high-voltage batteries to improve the efficiency of the vehicle, so there are more or less safety protection problems with high-voltage electricity, such as the connection of each controller with high-voltage lines. If the plug-in or the connector of the high-voltage electrical circuit is loose or broken, it may lead to the exposure of the high-voltage line and increase the risk of electric shock; Security risks; [0003] In the prior art, in order to prevent the above-mentioned potential safety hazards, the usual practice is to set a high-voltage safety monitoring circuit in parallel in the high-voltage circuit of the tram car; The connectors related to the circuit are connected in series and then conn...
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IPC IPC(8): B60L3/00B60L3/04
Inventor 袁永军王珂刘天翼王志强袁兼宗李雨恒王清
Owner SHANGHAI YIRUI AUTOMOBILE TECH