CN115107911B - Antitheft processing method for electric vehicle - Google Patents
Antitheft processing method for electric vehicle Download PDFInfo
- Publication number
- CN115107911B CN115107911B CN202110257830.2A CN202110257830A CN115107911B CN 115107911 B CN115107911 B CN 115107911B CN 202110257830 A CN202110257830 A CN 202110257830A CN 115107911 B CN115107911 B CN 115107911B
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- CN
- China
- Prior art keywords
- motor
- electric vehicle
- processing method
- temperature
- theft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
- B62H5/00—Appliances preventing or indicating unauthorised use or theft of cycles; Locks integral with cycles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
- B60R25/04—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens operating on the propulsion system, e.g. engine or drive motor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/30—Detection related to theft or to other events relevant to anti-theft systems
- B60R25/32—Detection related to theft or to other events relevant to anti-theft systems of vehicle dynamic parameters, e.g. speed or acceleration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2325/00—Indexing scheme relating to vehicle anti-theft devices
- B60R2325/30—Vehicles applying the vehicle anti-theft devices
- B60R2325/306—Motorcycles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
Abstract
The invention discloses an anti-theft treatment method of an electric vehicle, which comprises the following steps. An electronic anti-theft function is started. It is determined whether the electric vehicle is moving. Judging whether the temperature of the motor is greater than a critical value. When the temperature of the motor of the electric vehicle exceeds a threshold value, the motor is reversed to generate a reversal resistance.
Description
Technical Field
The present invention relates to an electric vehicle, and more particularly, to an anti-theft method for an electric vehicle.
Background
The current anti-theft technology can be divided into two types according to the structure: mechanical burglar alarm and electronic type burglar alarm, mechanical burglar alarm mainly adds extra car lock to lock the automobile body, but the user takes extra car lock when going out the activity, causes to go out inconvenient, is unfavorable for promoting user experience. The electronic burglar alarm is usually a simple and independent alarm device, and the stolen vehicle can normally run in the process of sounding, so that the electronic burglar alarm is not helpful for burglary prevention.
In recent electronic anti-theft technologies, it is quite common to detect that a thief locks a motor when riding an electric vehicle (such as a scooter), so that the thief has relatively high resistance and is not easy to move when moving the electric vehicle again, but the motor coil is possibly damaged due to too high temperature for a long time, and the method needs to be further improved.
Disclosure of Invention
The invention relates to an anti-theft treatment method of an electric vehicle, which increases the difficulty of theft by generating motor reverse resistance.
According to an aspect of the present invention, an antitheft processing method for an electric vehicle is provided, including the following steps. An electronic anti-theft function is started. It is determined whether the electric vehicle is moving. Judging whether the temperature of the motor is greater than a critical value. When the temperature of the motor of the electric vehicle exceeds a threshold value, the motor is reversed to generate a reversal resistance.
According to an aspect of the present invention, an antitheft processing method for an electric vehicle is provided, including the following steps. An electronic anti-theft function is started. It is determined whether the electric vehicle is moving. Judging whether the temperature of the motor is greater than a critical value. When the temperature of the motor of the electric vehicle exceeds a threshold value, an asynchronous electrical angle is provided to the motor so that the motor generates a vibration noise.
For a better understanding of the above and other aspects of the invention, reference will now be made in detail to the following examples, which are illustrated in the accompanying drawings:
drawings
FIG. 1 is a schematic diagram of an anti-theft method for an electric vehicle according to an embodiment of the invention;
fig. 2 is a schematic diagram illustrating an anti-theft timing of an electric vehicle according to an embodiment of the invention.
Symbol description
S10 whether to open the anti-theft device
S20 whether the electric vehicle is moving
S30, whether the motor temperature exceeds a critical value
S40, providing a short circuit brake according to the current speed
S42 reverse motor
S44 providing an unsynchronized electrical angle
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. However, those of ordinary skill in the art will recognize that the solution to practice the present application is not limited to only one, and that other methods, devices, steps, etc. may be employed. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
Referring to fig. 1, a schematic diagram of an anti-theft processing method for an electric vehicle according to an embodiment of the invention is shown. The anti-theft processing method of the embodiment mainly uses an electronic circuit to prevent theft, and can be applied to light electric vehicles or two-wheeled electric vehicles, such as electric scooter or electric bicycle with small volume and light weight.
The electric vehicle of the embodiment controls the motor to generate motor reverse resistance and/or motor vibration noise by the control circuit, thereby increasing the anti-theft effect without adding any hardware circuit. Referring to fig. 1, the anti-theft processing method includes the following steps. Step S10, an electronic anti-theft function is started. Step S20, determining whether the electric vehicle is moving. Step S30, judging whether the temperature of the motor is greater than a critical value. In step S40, when the temperature of the motor of the electric vehicle does not exceed a threshold, the motor provides a short-circuit brake according to the current speed. In step S42, when the temperature of the motor of the electric vehicle exceeds a threshold value, the motor is reversed to generate a reversal resistance. On the other hand, in step S44, when the temperature of the motor of the electric vehicle exceeds a threshold value, an unsynchronized electrical angle is provided to the motor to generate a vibration noise.
The steps S42 and S44 are located in the same determination step, but may be performed independently, combined, or used together with other methods, and the anti-theft processing method of the present embodiment is not limited to only one embodiment, but may be implemented in various ways.
In step S10, the electronic anti-theft function is turned on, and the anti-theft process is performed, and if the electronic anti-theft function is not turned on, the electric vehicle is operated with a normal function. The electronic anti-theft device of the present embodiment is not limited to only one embodiment, but may be implemented in various ways, for example, by locking the vehicle body so that the faucet of the electric vehicle cannot be turned, the accelerator cannot be started, or the tire brake cannot be locked to be turned.
In step S20, after the electronic anti-theft function is turned on, it is further judged whether the electric vehicle is moving. Whether the electric vehicle is moving is determined, for example, by detecting whether the wheels are rotating or detecting whether the phase of the synchronous motor is changing by a sensor. If the electric vehicle is judged to move, the theft is possibly generated. In order to prevent the electric vehicle from being stolen, in step S30, when it is determined that the electric vehicle is moving, it is further determined whether the temperature of the motor is greater than a critical value.
In step S40, when the temperature of the motor of the electric vehicle does not exceed the threshold value, the motor may provide a short-circuit brake according to the current speed, for example, in an embodiment, the controller may short-circuit the three-phase coils of the motor by providing a short-circuit current to the motor, so that the rotation of the motor generates resistance, and thus the wheels are locked and cannot rotate in a short time or the electric vehicle cannot be smoothly pulled. In addition, the motor can set the Duty cycle of the short circuit brake according to the current speed, for example, the Duty cycle is the Duty cycle of Pulse-width modulation (PWM), and different short circuit brakes can be obtained by adjusting the ratio of the duration of the Pulse signal to the total period time of the Pulse.
However, the short-circuit braking consumes kinetic energy of the motor inside the motor, and if the braking time is too long, there is a possibility that the motor temperature is too high. Therefore, although the resistance generated by the short-circuit brake can increase the difficulty of the electric vehicle being stolen, if the braking time is too long, the motor temperature may be too high to damage the motor.
In step S42, when the temperature of the motor of the electric vehicle exceeds the threshold value, in order to avoid damage caused by the motor having too high temperature, the motor is not provided with a short circuit brake, but is controlled in a normal manner, but the motor is required to be reversed to generate a reversing resistance to the road surface. That is, the direction of rotation of the motor is opposite to the moving direction of the electric vehicle, and the wheel generates reverse resistance to the road surface so that the electric vehicle cannot rotate forward, so that the temperature of the motor is not too high, and a thief cannot smoothly pull the electric vehicle, thereby increasing the difficulty of the electric vehicle being stolen.
On the other hand, in step S44, when the temperature of the motor of the electric vehicle exceeds the threshold value, in order to avoid damage caused by the motor being too high in temperature, the motor does not provide a short circuit brake, but instead provides an unsynchronized electrical angle to the motor so that the motor generates a vibration noise.
The motor of this embodiment may be a permanent magnet synchronous servomotor (PMSM), which refers to a synchronous motor in which the rotor has permanent magnets instead of windings. The motor of the present embodiment may also be a dc brushless motor. Therefore, the motor of the present embodiment is not limited to only one implementation type, and may have a plurality of implementation types.
In general, in order to achieve electromagnetic directional control of a permanent magnet synchronous motor, it is necessary to know the electrical angular rotation direction and the initial position of the motor rotor. The angle of the stator current is close to the rotor angle by judging the relation between the angle of the stator current (electric angle for short) and the rotor angle, so that the permanent magnet synchronous motor can be controlled to start normally. However, if an asynchronous electrical angle is provided to the motor, the stator current cannot be converged to the rotor angle, so that the motor is always in a micro-vibration state, and vibration noise is generated. The above-mentioned asynchronous electrical angle means that there is an error angle between the angle of the stator current and the rotor angle of the motor, and the error angle can be provided to the permanent magnet synchronous motor by the motor controller to continuously keep the permanent magnet synchronous motor producing vibration noise.
The anti-theft treatment method of the electric vehicle can be applied to light electric vehicles or two-wheeled electric vehicles, such as electric scooter or electric bicycle with small volume and light weight, so as to achieve the effects of active anti-theft and scaring. For example, referring to fig. 2, a schematic diagram of an anti-theft timing of an electric vehicle according to an embodiment of the invention is shown. In the initial stage, a short circuit braking mode is adopted to enable a thief to have certain resistance when pulling the scooter, so that the thief is difficult to pull the scooter, and when the temperature of the motor reaches a set critical value at a time point T1, the short circuit braking mode is stopped; in the second stage, the motor is reversed to generate certain resistance in a normal motor control mode but at a reverse speed, and an asynchronous electric angle is used to generate certain resistance and also generate certain noise so as to achieve the aims of attracting attention of passers-by and giving up theft by fear of a thief.
In summary, although the present invention has been described in terms of the above embodiments, it is not limited thereto. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the invention is defined by the appended claims.
Claims (8)
1. An antitheft processing method of an electric vehicle includes:
opening an electronic anti-theft function;
judging whether the electric vehicle moves or not;
judging whether the temperature of the motor is greater than a critical value; and
when the temperature of the motor of the electric vehicle exceeds the threshold value, the motor is reversed to generate a reverse resistance and provide an unsynchronized electrical angle to the motor.
2. The antitheft processing method of claim 1 wherein the direction in which the motor rotates is opposite to the direction in which the electric vehicle moves.
3. An antitheft processing method of an electric vehicle includes:
opening an electronic anti-theft function;
judging whether the electric vehicle moves or not;
judging whether the temperature of the motor is greater than a critical value; and
when the temperature of the motor of the electric vehicle exceeds the threshold, providing an unsynchronized electrical angle to the motor.
4. The anti-theft processing method according to claim 3, further comprising:
reversing the motor to generate a reversing resistance when the temperature of the motor of the electric vehicle exceeds the threshold value; and
when the temperature of the motor of the electric vehicle does not exceed the threshold, the motor provides a short circuit brake according to the current speed.
5. The anti-theft processing method according to claim 4, wherein the short circuit brake is used at an initial stage of anti-theft start, and when the motor temperature is detected to reach the set threshold value, the short circuit brake is stopped, and the motor is reversed to generate the reverse resistance and provide the asynchronous electrical angle to the motor.
6. The anti-theft processing method according to claim 4, wherein determining whether the electric vehicle is moving comprises detecting whether a wheel is rotating or detecting whether a phase of the motor is changing by a sensor.
7. The anti-theft processing method according to claim 4, wherein the short-circuit brake provides a short-circuit current to the motor by a controller to short-circuit three-phase coils of the motor so as to generate resistance to rotation of the motor, and the motor sets a duty cycle of the short-circuit brake according to a current speed.
8. The antitheft processing method of claim 4 wherein the motor rotates in a direction opposite to the moving direction of the electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257830.2A CN115107911B (en) | 2021-03-09 | 2021-03-09 | Antitheft processing method for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110257830.2A CN115107911B (en) | 2021-03-09 | 2021-03-09 | Antitheft processing method for electric vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN115107911A CN115107911A (en) | 2022-09-27 |
| CN115107911B true CN115107911B (en) | 2023-08-08 |
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| CN202110257830.2A Active CN115107911B (en) | 2021-03-09 | 2021-03-09 | Antitheft processing method for electric vehicle |
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2021
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| CN115107911A (en) | 2022-09-27 |
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