Double-source battery pack switching method and system
A technology for switching systems and battery packs, which is applied in battery/battery traction, battery/fuel cell control devices, charging stations, etc., and can solve problems such as the circulation of dual-source battery packs that is easy to generate
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Embodiment 1
[0085] This embodiment provides a dual-source battery pack switching method, including:
[0086] Obtain the first terminal voltage of the currently used battery pack and the second terminal voltage of the battery pack to be switched in real time;
[0087] During normal driving:
[0088] Switching method one, if the difference between the voltage at the first terminal and the voltage at the second terminal is within the first preset range, the battery pack is switched directly;
[0089] If the difference between the voltage at the first terminal and the voltage at the second terminal exceeds the first preset range, it includes:
[0090] Switching method 2, if the voltage at the second terminal is lower than the voltage at the first terminal, adjust the output vectors of the iq axis and the id axis of the vehicle motor, so that the efficiency of the vehicle motor is reduced and the output torque and speed remain unchanged, so that the first terminal of the currently used batter...
Embodiment 2
[0118] This embodiment provides a dual-source battery pack switching system, such as figure 1 As shown, it includes a battery information collection module, a vehicle controller 3, a motor controller (MCU) 4, and a switch module, and the battery information collection module, the motor controller 4, and the switch module are all connected to the vehicle controller 3 ;
[0119] The battery information collection module is used to obtain the first terminal voltage of the currently used battery pack and the second terminal voltage of the battery pack to be switched and send them to the vehicle controller 3;
[0120] The vehicle controller 3 is used to perform the following operations:
[0121] During normal driving:
[0122] Switching mode 1, if the difference between the received first terminal voltage and the second terminal voltage is within the first preset range, send an instruction to the switch module to directly switch the battery pack;
[0123] If the difference betwe...
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