CN112498116A - Control method and system for electric retarder of automobile - Google Patents
Control method and system for electric retarder of automobile Download PDFInfo
- Publication number
- CN112498116A CN112498116A CN202011241963.2A CN202011241963A CN112498116A CN 112498116 A CN112498116 A CN 112498116A CN 202011241963 A CN202011241963 A CN 202011241963A CN 112498116 A CN112498116 A CN 112498116A
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- retarder
- gear
- working
- control unit
- electronic control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/28—Eddy-current braking
Abstract
The invention discloses a method and a system for controlling an electric retarder of an automobile, belonging to the technical field of automobile reducers. In the invention, when the control switch is in a certain gear for a long time, the electronic control unit can calculate the working time of each coil of the retarder, when the working time of a certain group of coils is detected to exceed the set time, the working groups of the driving relay are automatically switched, the switching working groups are also switched according to the principles of 'right circulation' and 'first-in first-out', the switching is completed within 1ms, the vehicle does not have any sense, the phenomenon that a certain group of coils of the retarder is overheated and damaged due to long-time working is avoided, and the service life and the use effect of the retarder are improved.
Description
Technical Field
The invention relates to the technical field of automobile speed reducers, in particular to a method and a system for controlling an electric retarder of an automobile.
Background
The conventional control method of the automobile retarder can be divided into step driving and stepless PWM driving, and the PWM driving has the defects of high failure rate, slow response time and the like due to the characteristics of severe working conditions, large working current and the like of the automobile retarder, so most of the conventional market still adopts the step driving mode. Adopt "circulation of the right side", "first in first out" working method can be better solve the operating frequency of each coil work group, but "circulation of the right side", "first in first out" working method are realized through the driver switching gear, and some special highway sections, for example under the condition of long distance downhill slope, can appear the retarber and work for a long time at certain fixed gear, can lead to the coil assembly of continuous long-time work to damage because of the high temperature like this.
Disclosure of Invention
The invention aims to solve the problem that coils are damaged due to the fact that gear shifting is not carried out for a long time in gear shifting driving in the prior art, and provides a method and a system for controlling an electric retarder of an automobile.
In order to achieve the above effects, the present invention provides the following technical solutions: a control method for an electric retarder of an automobile comprises a control system, wherein the control system comprises a control switch, an electronic control unit, a driving relay, a power switch, an indicator light, a speed sensor, a temperature sensor, a test plug-in, a CAN interface, a brake light relay, a finished automobile interface and a connecting wire harness, the electronic control unit detects that the retarder meets working requirements, and when the gear of the control switch changes, the electronic control unit CAN calculate the working time of each coil in the retarder and automatically switch a working group of the driving relay.
Further, when the control switch gear changes, the electronic control unit controls the driving relay to shift up and down according to the running state of the vehicle.
Further, the working mode that the gear shifting is not fixed and is carried out according to a certain rule is a right circulation mode.
Furthermore, the downshift follows a working mode of a first-in first-out principle, the gear which works first during upshift also exits from working first during downshift, and the exits of other working gears also sequentially perform downshift in the order that the gear which works first exits.
Furthermore, the electronic control unit detects that the retarder meets the working requirement, namely the electronic control unit receives signals sent back by a vehicle speed sensor and a temperature sensor which are arranged near the retarder, and then comprehensively judges according to vehicle information sent back by a whole vehicle interface and a CAN interface to confirm whether the retarder enters a standby state.
Further, when each signal meets the operating requirement of the retarder, the electronic control unit can output an indicating signal to light a status light in the indicating lamp, so that a driver is prompted that the retarder can work, a control switch is turned on, the retarder enters a working state, and the retarder starts to execute automatic group changing work after working.
Further, when the automatic group changing work is carried out, the method comprises the following steps:
and S1, determining whether the control switch is in 4-gear operation, and if the control switch is in 4-gear operation, not performing the grouping changing logic.
And S2, when the control switch does not work in the 4-gear, checking whether the work time of the coil of the first working group exceeds the set time.
And S3, when the set time is exceeded, the coil of the first working group is closed, and the coil group which is not working is opened in the right circulation.
Further, when the automatic group changing work is carried out, the method also comprises the following steps:
and S4, repeating the steps of S2-S3 until the control switch works in the 0 gear or the 4 gear.
Furthermore, the electronic control unit can receive a vehicle speed sensor signal or a vehicle odometer signal, and when the running speed of the vehicle is detected to be lower than a set speed limit value, the retarder is turned off step by step to work, and the vehicle speed state indicator lamp is turned off.
The utility model provides an electric retarder control system of car, includes control switch, electronic control unit, drive relay, switch, pilot lamp, speed sensor, temperature sensor, test plug-in components, CAN interface, brake light relay, whole car interface and connection pencil, the electronic control unit detects under the retarder satisfies the operating requirement, when the control switch gear changes, the work group of automatic switch drive relay.
The invention provides a method and a system for controlling an electric retarder of an automobile, which have the following beneficial effects:
in the invention, when the control switch is in a certain gear for a long time, the electronic control unit can calculate the working time of each coil of the retarder, when the working time of a certain group of coils is detected to exceed the set time, the working groups of the driving relay are automatically switched, the switching working groups are also switched according to the principles of 'right circulation' and 'first-in first-out', the switching is completed within 1ms, the vehicle does not have any sense, the phenomenon that a certain group of coils of the retarder is overheated and damaged due to long-time working is avoided, and the service life and the use effect of the retarder are improved.
Drawings
FIG. 1 is a schematic diagram of a control system structure of a control method for an electric retarder of an automobile;
FIG. 2 is a logic diagram of a shift control method for an electric retarder of an automobile;
FIG. 3 is a flow chart of an automatic grouping change of the control method of the electric retarder of the automobile.
The reference numbers in the figures illustrate:
1. a control switch; 2. an electronic control unit; 3. driving a relay; 4. a power switch; 5. an indicator light; 6. a vehicle speed sensor; 7. a temperature sensor; 8. testing the plug-in; 9. a CAN interface; 10. a brake light relay; 11. a finished automobile interface; 12. and connecting the wiring harness.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
The invention provides a technical scheme that: referring to fig. 1-3, a method for controlling an electric retarder of an automobile, the system implementing the method comprises a control system, the control system comprises a control switch 1, an electronic control unit 2, a driving relay 3, a power switch 4, an indicator lamp 5, a vehicle speed sensor 6, a temperature sensor 7, a test plug-in 8, a CAN interface 9, a brake lamp relay 10, a vehicle interface 11 and a connecting wire harness 12, the electronic control unit 2 CAN calculate the working time of each coil in the retarder when the gear of the control switch 1 changes under the condition that the retarder meets the working requirement, the electronic control unit 2 CAN automatically switch the working group of the driving relay 3, when the gear of the control switch 1 changes, the electronic control unit 2 controls the upshift and downshift of the working gear of the driving relay 3 according to the running state of the automobile, the upshift is not fixed and the working mode performed according to a certain rule is right circulation, the gear reduction follows the working mode of a first-in first-out principle, the gear which works firstly during gear increase also exits firstly during gear reduction, the other working gears exit and sequentially reduce the gear in the order that the gear which works firstly exits, the electronic control unit 2 firstly reads the gear which works firstly and closes the gear, then checks whether the retarder is in an O-gear working state after closing the gear, if the retarder is in the O-gear working state after closing, the gear which is closed at this time is set as the gear which is closed at last, and when the electronic control unit 2 detects that the retarder meets the working requirement, the electronic control unit 2 receives signals transmitted back by a vehicle speed sensor 6 and a temperature sensor 7 which are arranged near the retarder, then comprehensively judges according to vehicle information of a whole vehicle interface 11 and a CAN interface 9 to determine whether the retarder enters a standby state or not, and when each signal meets the use requirement of the retarder, electronic control unit 2 can export an indicator signal and light the status light in pilot lamp 5, and suggestion driver retarder can work, opens control switch 1, and the retarder gets into operating condition, and the work of starting to carry out automatic group's work of trading after the retarder work, when automatic group's work of trading, includes following step: (1) determining whether the control switch 1 works in a 4-gear mode, if the control switch works in the 4-gear mode, not performing a group changing logic, (2) when the control switch 1 does not work in the 4-gear mode, checking whether the working time of a coil of a first working group exceeds a set time or not, (3) when the set time is exceeded, closing the coil of the first working group, opening a coil group which is not in working in a right circulation mode, (4) repeating the steps from S2 to S3, and when the control switch 1 works in the 0-gear mode or the 4-gear mode, the electronic control unit 2 can receive a signal of a vehicle speed sensor 6 or a signal of a vehicle odometer, and when the running speed of the vehicle is detected to be lower than a set speed limit value, closing the work of a retarder step by step and closing the.
A control system of an electric retarder of an automobile comprises a control switch 1, an electronic control unit 2, a driving relay 3, a power switch 4, an indicator lamp 5, a speed sensor 6, a temperature sensor 7, a test plug-in 8, a CAN interface 9, a brake lamp relay 10, a whole automobile interface 11 and a connecting wire harness 12, wherein when the electronic control unit 2 detects that the retarder meets the working requirement, when the gear of the control switch 1 is changed, the working group of the driving relay 3 is automatically switched, the electronic control unit 2 CAN receive an ABS signal of the automobile, when the working stopping signal sent by the ABS controller is received, the working retarder is immediately closed, when the stopping signal of the ABS controller is removed, the working is recovered step by step, and when the ABS signal is controlled, the indicator lamp 5 gives a corresponding indication, the electronic control unit 2 establishes communication connection with the signal of the CAN interface 9 of the automobile, when the signal of the speed sensor 6 or the signal of a vehicle odometer fails, after the test plug-in 8 is opened, the retarder will temporarily resume operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides an electric retarder control method of car, the system of implementing this method includes control system, control system includes control switch (1), electronic control unit (2), drive relay (3), switch (4), pilot lamp (5), speed sensor (6), temperature sensor (7), test plug-in components (8), CAN interface (9), brake lamp relay (10), whole car interface (11) and connecting harness (12), its characterized in that, electronic control unit (2) detect under the retarber satisfies the operating requirement, when control switch (1) gear changes, electronic control unit (2) CAN calculate the operating time of each coil in the retarber, the work group of automatic switch drive relay (3).
2. The control method for the electric retarder of the automobile according to claim 1, characterized in that when the gear of the control switch (1) is changed, the electronic control unit (2) controls the upshift and downshift of the working gear of the driving relay (3) according to the running state of the automobile.
3. The method as claimed in claim 2, wherein the regular operation mode of the upshift is a right cycle.
4. The method as claimed in claim 2, wherein the downshifting follows a first-in first-out principle, the gear which is first operated during the upshift is also first exited during the downshift, and the other gears are also exited in the order of exiting the first operated gear.
5. The method for controlling the electric retarder of the automobile according to claim 1, wherein when the electronic control unit (2) detects that the retarder meets the working requirement, the electronic control unit (2) receives signals sent back by a speed sensor (6) and a temperature sensor (7) which are installed near the retarder, and then comprehensively judges whether the retarder enters a standby state or not according to vehicle information sent back by a whole automobile interface (11) and a CAN interface (9).
6. The method for controlling the electric retarder of the automobile according to claim 5, wherein when each signal meets the use requirement of the retarder, the electronic control unit (2) outputs an indication signal to light a status light in the indicator light (5) to prompt a driver that the retarder can work, the control switch (1) is turned on, the retarder enters a working state, and automatic group changing work is started after the retarder works.
7. The method for controlling the electric retarder of the automobile according to claim 6, characterized by comprising the following steps during automatic group changing operation:
s1, determining whether the control switch (1) works in 4-gear, if so, not performing the grouping logic;
s2, when the control switch (1) does not work in 4-gear, checking whether the working time of the coil of the first working group exceeds the set time;
and S3, when the set time is exceeded, the coil of the first working group is closed, and the coil group which is not working is opened in the right circulation.
8. The method for controlling the electric retarder of the automobile according to claim 7, characterized by further comprising the following steps during automatic group change operation:
and S4, repeating the steps of S2-S3 until the control switch (1) works in the 0 gear or the 4 gear.
9. The control method for the electric retarder of the automobile according to claim 1, characterized in that the electronic control unit (2) can receive a signal of a vehicle speed sensor (6) or a signal of a vehicle odometer, and when the running speed of the automobile is detected to be lower than a set speed limit value, the retarder is turned off step by step, and a vehicle speed state indicator lamp (5) is turned off.
10. The utility model provides an auto electric retarber control system, includes control switch (1), electronic control unit (2), drive relay (3), switch (4), pilot lamp (5), speed sensor (6), temperature sensor (7), test plug-in components (8), CAN interface (9), brake light relay (10), whole car interface (11) and connection pencil (12), its characterized in that, electronic control unit (2) detect under the retarber satisfies the operating requirement, when control switch (1) gear changes, the work group of automatic switch drive relay (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011241963.2A CN112498116A (en) | 2020-11-09 | 2020-11-09 | Control method and system for electric retarder of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011241963.2A CN112498116A (en) | 2020-11-09 | 2020-11-09 | Control method and system for electric retarder of automobile |
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| Publication Number | Publication Date |
|---|---|
| CN112498116A true CN112498116A (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011241963.2A Pending CN112498116A (en) | 2020-11-09 | 2020-11-09 | Control method and system for electric retarder of automobile |
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| CN (1) | CN112498116A (en) |
Citations (7)
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|---|---|---|---|---|
| FR2875968A1 (en) * | 2004-09-30 | 2006-03-31 | Telma Sa | WATER-COOLED ELECTROMAGNETIC RETARDER, METHOD FOR CONTROLLING A RETARDER AND MOTOR VEHICLE COMPRISING SUCH RETARDER |
| CN202147671U (en) * | 2011-06-10 | 2012-02-22 | 华越汽车制动技术(深圳)有限公司 | Brake control device of automobile |
| CN104002687A (en) * | 2014-06-05 | 2014-08-27 | 瑞安市科密汽车制动有限公司 | Control method and system for electric bumper of automobile |
| CN205997722U (en) * | 2016-08-31 | 2017-03-08 | 泰乐玛汽车制动系统（上海）有限公司 | A kind of brakes |
| CN107344501A (en) * | 2017-06-12 | 2017-11-14 | 深圳市特尔佳科技股份有限公司 | Electronic type driving controller of electric eddy current brake and its control method |
| CN209650045U (en) * | 2019-01-22 | 2019-11-19 | 浙江铭图电气科技有限公司 | A kind of intelligent controller of current vortex retarder |
| CN209747414U (en) * | 2019-06-05 | 2019-12-06 | 鑫源慧诚(厦门)科技有限公司 | intelligent control system of automobile eddy current retarder |
-
2020
- 2020-11-09 CN CN202011241963.2A patent/CN112498116A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2875968A1 (en) * | 2004-09-30 | 2006-03-31 | Telma Sa | WATER-COOLED ELECTROMAGNETIC RETARDER, METHOD FOR CONTROLLING A RETARDER AND MOTOR VEHICLE COMPRISING SUCH RETARDER |
| CN202147671U (en) * | 2011-06-10 | 2012-02-22 | 华越汽车制动技术(深圳)有限公司 | Brake control device of automobile |
| CN104002687A (en) * | 2014-06-05 | 2014-08-27 | 瑞安市科密汽车制动有限公司 | Control method and system for electric bumper of automobile |
| CN205997722U (en) * | 2016-08-31 | 2017-03-08 | 泰乐玛汽车制动系统（上海）有限公司 | A kind of brakes |
| CN107344501A (en) * | 2017-06-12 | 2017-11-14 | 深圳市特尔佳科技股份有限公司 | Electronic type driving controller of electric eddy current brake and its control method |
| CN209650045U (en) * | 2019-01-22 | 2019-11-19 | 浙江铭图电气科技有限公司 | A kind of intelligent controller of current vortex retarder |
| CN209747414U (en) * | 2019-06-05 | 2019-12-06 | 鑫源慧诚(厦门)科技有限公司 | intelligent control system of automobile eddy current retarder |
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Application publication date: 20210316 |
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