Rotation speed control method for preventing overspeed of motor of pure electric logistics vehicle

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 preventing overspeed

Active Publication Date: 2019-04-26
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 bo

Method used

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  • Rotation speed control method for preventing overspeed of motor of pure electric logistics vehicle

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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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Abstract

The invention discloses a rotation speed control method for preventing overspeed of a motor of a pure electric logistics vehicle. The rotation speed control method adopts the pure electric logistics vehicle, a whole vehicle controller, a power source controller, the driving motor, a motor rotation speed sensing module and torque analysis software; the whole vehicle controller, the power source controller, the driving motor and the motor rotation speed sensing module are all installed on the pure electric logistics vehicle, and the torque analysis software is installed on the whole vehicle controller. The rotation speed control method comprises the steps of S1, judging road conditions; S2, acquiring a rotating speed signal of the driving motor; S3, calculating the maximum torque and rotating speed of the driving motor; S4, controlling the rotating speed of the driving motor. The method has the advantages that the closed-loop speed feedback precision is high, overspeed is effectively avoided, a good speed limiting effect is achieved, damage to mechanical structures of vehicles is avoided, the safety factors of drivers are greatly increased, and the method adapts to different road conditions and is applicable to a wide range of vehicle modes and great in 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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Application Information

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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
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