Safety application control method for double-battery system
A system security and application control technology, applied in battery/fuel cell control devices, control devices, electric vehicles, etc., can solve the problems that the whole vehicle cannot be disconnected from high voltage, the bonded contactor gets an electric shock, and cannot realize intelligent control, etc.
Active Publication Date: 2020-08-11
ANHUI ANKAI AUTOMOBILE
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Problems solved by technology
[0002] At present, when the dual-battery system of a pure electric bus is switched, intelligent control cannot be realized, and there are potential safety hazards. Because the vehicle may have a large operating current when it is running, if the vehicle does not stop at this time, the switch is performed during the running process. At this time, the contactor will be charged and cut off, generating electric sparks, and the bonded contactor will get an electric shock, so that the whole vehicle cannot be disconnected from the high voltage, posing a safety hazard;
Method used
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[0060] Such as figure 1 and figure 2 As shown, a dual-battery system safety application control method is applied to the dual-battery system. The dual-battery system includes a first power battery subsystem 1, a second power battery subsystem 2, a switch 3, and a vehicle control 4, battery management system 5, high voltage load 6, main positive contactor 7 and switch contactor 8;
[0061] The first power battery subsystem 1 is connected to the normally closed contact of the switching contactor 8, the second power battery subsystem 2 is connected to the normally open contact of the switching contactor 8, and the output end of the switching contactor 8 is connected to the main positive contactor 7 is connected to the input end, the output end of the total positive contactor 7 is connected to the high voltage load 6, the coil of the switching contactor 8 is connected to the vehicle controller 4, the coil of the total positive contactor 7 is connected to the vehicle controller 4...
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The invention discloses a safety application control method for a double-battery system. The safety application control method is applied to the double-battery system. The double-battery system comprises a first power battery subsystem, a second power battery subsystem, a selector switch, a vehicle control unit, a battery management system, a high-voltage load, a main positive contactor and a switching contactor; the first power battery subsystem is connected with the normally closed contact of the switching contactor; the second power battery subsystem is connected with the normally open contact of the switching contactor; the output end of the switching contactor is connected with the input end of the main positive contactor; the output end of the main positive contactor is connected with the high-voltage load; the coil of the switching contactor is connected with the vehicle control unit; the coil of the main positive contactor is connected with the vehicle control unit; the selector switch is connected with the vehicle control unit; and the vehicle control unit is in signal connection with the battery management system. The method is reasonable in structure and safe in application, and realizes intelligent switching control over a pure electric bus double-battery system.
Description
technical field [0001] The invention belongs to the field of pure electric passenger cars, relates to the application technology of a dual-battery system, in particular to a method for controlling the safety application of a dual-battery system. Background technique [0002] At present, when the dual-battery system of a pure electric bus is switched, intelligent control cannot be realized, and there are potential safety hazards. Because the vehicle may have a large operating current when it is running, if the vehicle does not stop at this time, the switch is performed during the running process. At this time, the contactor will be charged and cut off, generating electric sparks, and the bonded contactor will get an electric shock, so that the whole vehicle cannot be disconnected from the high voltage, posing a safety hazard; [0003] Considering the importance of the dual-battery system switching of pure electric buses, it is necessary to provide a dual-battery system safety...
Claims
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IPC IPC(8): B60L3/00B60L58/18B60L58/12
CPCB60L3/0046B60L58/18B60L58/12B60L2240/12B60L2240/54Y02T10/70
Inventor 王少凯鲁飞陈炜花伟雷超刘童亮
Owner ANHUI ANKAI AUTOMOBILE