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Electric vehicle safety control method, electric vehicle and storage medium

An electric vehicle, safety control technology, applied in the direction of motor control, motor generator control, control of electromechanical brakes, etc.

Active Publication Date: 2021-07-02
SUZHOU INOSA UNITED POWER SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a safety control method for an electric vehicle, an electric vehicle and a storage medium, aiming to solve the problem of how to obtain the position of the rotor and its rotational speed when the position detection device of the electric vehicle fails

Method used

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  • Electric vehicle safety control method, electric vehicle and storage medium
  • Electric vehicle safety control method, electric vehicle and storage medium
  • Electric vehicle safety control method, electric vehicle and storage medium

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] The electric vehicle safety control method of the invention can be applied to the electric vehicle, and can achieve the purpose of redundant control when the position detection device of the electric vehicle fails. Such as figure 1 As shown, it is a schematic flow chart of an electric vehicle safety control method according to an embodiment of the present invention. The electric vehicle safety redundancy method specifically includes the following steps:

[0046] Step S11: When the position detection device is normal, use the position angle and rotational speed of the motor rotor detected by...

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Abstract

An embodiment of the present invention provides an electric vehicle safety control method, an electric vehicle and a storage medium. The electric vehicle safety control method includes: when the position detection device is normal, using the position detection device to detect the position angle of the motor rotor obtained and rotating speed to perform closed-loop control on the electric motor of the electric vehicle; when the position detection device breaks down, use the estimated position angle and estimated rotating speed of the motor rotor observed by the motor model to perform closed-loop control on the electric motor of the electric vehicle. The embodiment of the present invention solves the problem that the whole vehicle loses power when a failure occurs through the redundant control of the electric vehicle position detection device, realizes risk control and redundant control, ensures the normal driving of the vehicle, and leaves enough time margin Drive the vehicle to a safe area or a 4S shop for maintenance.

Description

technical field [0001] Embodiments of the present invention relate to the field of automobiles, and more specifically, to an electric vehicle safety control method, an electric vehicle and a storage medium. Background technique [0002] With the promotion and popularization of electric vehicles, people are more and more concerned about the reliability and safety of electric vehicles. There are tens of thousands of electronic devices in electric vehicles, and the failure of each device may cause the vehicle to fail to operate, and even threaten human life. The position detection device is a key part of the motor controller. Once it fails, the whole vehicle will lose power and cannot run. [0003] Commonly used position detection devices include ABZ (A-phase, B-phase, Z-phase) encoders and resolvers. The main function is to detect the position and speed of the current motor rotor. The position of the motor rotor is used for motor vector control to control the excitation curre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/18H02P29/024
CPCH02P29/024H02P2203/03H02P2205/01H02P2205/07H02P21/18
Inventor 李民强
Owner SUZHOU INOSA UNITED POWER SYST CO LTD
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