A rotational speed control method for a pure electric logistics vehicle to prevent motor overspeed
A technology of speed control and pure electric animals, which is applied in motor control, electric vehicles, motors, etc., can solve problems such as temperature rise and damage to the motor body, and achieve the effects of improving safety factor, avoiding mechanical structure damage, and high feedback accuracy
Active Publication Date: 2021-04-09
上海伊控动力系统有限公司
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Problems solved by technology
After the motor overspeed, it will heat up sharply, which may damage the motor body, so it is necessary to control the motor speed to prevent it from overspeeding
Method used
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Embodiment
[0023] Embodiment: A kind of speed control method of pure electric logistics vehicle preventing motor overspeed, such as figure 1 As shown, the speed control method uses a pure electric logistics vehicle, a vehicle controller, a power source controller, a drive motor, a motor speed sensing module and torque analysis software, and the vehicle controller, power source controller, The driving motor and the motor speed sensing module are installed on the pure electric logistics vehicle, the torque analysis software is installed on the vehicle controller, and the input of the motor speed sensing module and the vehicle controller Terminals are electrically connected, the output terminal of the vehicle controller is electrically connected to the input terminal of the power source controller, the output terminal of the power source controller is electrically connected to the drive motor, and the motor speed sensing module collecting the rotational speed of the drive motor;
[0024] T...
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The invention discloses a speed control method for preventing motor overspeed of a pure electric logistics vehicle. The speed control method uses a pure electric logistics vehicle, a vehicle controller, a power source controller, a driving motor, a motor speed sensing module and torque analysis software , the vehicle controller, the power source controller, the driving motor, and the motor speed sensing module are all installed on the pure electric logistics vehicle, and the torque analysis software is installed on the vehicle controller. The speed control method includes steps: S1, judging the road condition; S2, collecting the speed signal of the driving motor; S3, calculating the maximum torque and speed of the driving motor; S4, controlling the speed of the driving motor. The present invention has high closed-loop speed feedback accuracy, effectively prevents overspeed, has good speed limit effect, avoids damage to vehicle mechanical structures, greatly improves driver safety factor, adapts to different road conditions, is applicable to a wide range of vehicle models, and has a good market prospect.
Description
technical field [0001] The invention belongs to the field of pure electric logistics vehicles, and in particular relates to a control method for overspeed protection of motors of pure electric logistics vehicles. Background technique [0002] After nearly 10 years of research and development of new energy vehicles in my country, great progress has been made, and the market acceptance is getting higher and higher. At present, new energy sources mainly include pure electric, hybrid and plug-in hybrid, involving single power source and multiple power sources. Compared with traditional logistics vehicles, pure electric logistics vehicles have the advantages of low speed, fast acceleration, environmental protection and energy saving. At the same time, due to the characteristics of low-speed constant torque and high-speed constant power of the motor, the transmission mechanism of the logistics vehicle is almost single-speed direct connection, and the design requirements such as c...
Claims
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IPC IPC(8): H02P29/10B60L15/20
CPCB60L15/209B60L2200/36H02P29/10Y02T10/64Y02T10/72
Inventor 张吉军密刚刚陈曦程亚楠
Owner 上海伊控动力系统有限公司