CN111734821A - PRND gear control method for electric vehicle - Google Patents
PRND gear control method for electric vehicle Download PDFInfo
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- CN111734821A CN111734821A CN202010628943.4A CN202010628943A CN111734821A CN 111734821 A CN111734821 A CN 111734821A CN 202010628943 A CN202010628943 A CN 202010628943A CN 111734821 A CN111734821 A CN 111734821A
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- gear
- driver
- prnd
- control
- touch screen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/2807—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention belongs to the technical field of automobiles, and particularly relates to a PRND gear control method for an electric automobile, wherein when a TCU prompts a serious gear fault or a driver finds that gear control is not available, the PRND gear control method comprises the following steps: (1) a driver double-strikes the hit-control touch screen to disable the gear shift controller and wake up a pop-up gear operation area, wherein the gear operation area is used for replacing the operation of the PRND gear control device; (2) the intention signal of the driver for shifting gears is transmitted through the gear operating area; (3) after receiving an intention signal transmitted by a driver, the TVCU judges whether a target gear is an allowable gear; (4) the TVCU judges whether the operation is allowed or not when the current gear is switched to the target gear; (5) prompting unreasonable operation; (6) executing a gear shifting operation according with a set rule; (7) before powering down, the gear is set as P gear. The invention can carry out emergency safe driving when the circuit of the gear signal generator is damaged.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a PRND gear control method for an electric automobile.
Background
The transmission gear shift operating mechanism is transited from a manual gear to an automatic gear, although the forward 12345 gears are automatically switched, the forward D gear, the reverse R gear, the parking P gear and the neutral N gear are still switched by manually shifting a gear shift lever structure. Because the gear level structure is bulky, occupy more cockpit space, make originally the control console of local and prosperous, can't arrange more functions, at present progressively develop into drive-by-wire selector. The wire control gear shifter has various forms such as an operating lever type, a knob type, a button type and the like. The knob type also comprises an end point and an end-free point, and the periphery of the button with the center of P gear is arranged in an end-free point DNRN circulating mode. The misoperation and the gear misuse can lead to the damage of the vehicle if the vehicle is in a light state and the damage of the vehicle and the death of people if the vehicle is in a heavy state. Thus, patent application 201910239677.3 sets the D-range and R-range engagement conditions for vehicle speed and brake signals; patent application 201711174142.X specifies allowed gears and allowed gear changes by using satellite positioning and dividing scenes such as starting, congestion, climbing and the like; patent application 201710245120.1 even considers the technical problem of how to easily return to the standby position after the vehicle is stopped, sets the gear to P gear through the middle button, and the outer ring can only be N gear when pressing. All the above strategies require the gear operating device to correctly generate corresponding signals and reliably transmit the signals to the TCU, or a TVCU integrating the TCU and the VCU into a whole, however, under the condition that a gear signal generator circuit is damaged, the gear operating device cannot transmit driving intention to the TCU, emergency driving is carried out, and deep research is not available.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a PRND shift control method for an electric vehicle, which can perform emergency driving without transmitting driving intention to the TCU through a shift operation device when a shift signal generator circuit is damaged.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a PRND gear control method for an electric vehicle comprises a PRND gear control device, a central control touch screen, a vehicle control unit, a gear shifting controller and a clutch gearbox assembly;
the central control touch screen is a touch screen which is arranged on a central control platform of a cab and is used for interaction between a vehicle and a driver, can display information to the driver, and can collect instructions of the driver to the vehicle control unit through corresponding clicking and sliding gesture operations of the driver on the touch screen;
when the TCU prompts a serious gear fault or a driver finds that gear control is not available, the control method of the PRND gear comprises the following steps:
(1) a driver double-strikes the hit-control touch screen to disable the gear shift controller and wake up a pop-up gear operation area, wherein the gear operation area is used for replacing the operation of the PRND gear control device;
(2) the intention signal of the driver for shifting gears is transmitted through the gear operating area;
(3) after the TVCU or the TCU receives an intention signal transmitted by a driver, judging whether a target gear is an allowable gear;
(4) the TVCU or the TCU judges whether the operation is allowed or not when the current gear is switched to the target gear;
(5) prompting unreasonable operation;
(6) executing a gear shifting operation according with a set rule;
(7) before powering down, the gear is set as P gear.
Specifically, the gear operating regions include a parking gear P, a reverse gear R, a neutral gear N, and a drive gear D.
Specifically, the PRND shift control device is an electronic shift-by-wire, and the shift-by-wire is an operation lever type, a knob type or a button type.
Specifically, the vehicle control unit is an intelligent unit for performing communication management, energy management and drive management functions.
Specifically, the clutch transmission assembly refers to a mechanism for executing on-off and speed ratio of a transmission chain.
Specifically, the gear shift controller is an intelligent unit for performing target gear (speed ratio) decision, actuator control, fault diagnosis and fault processing.
Compared with the prior art, the invention can carry out emergency driving under the condition that the circuit of the gear signal generator is damaged and the driving intention cannot be transmitted to the TCU through the PRND gear control device, thereby avoiding driving danger and improving safety.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 illustrates an example of a TVCU confirmation fault display and emergency gear control touch screen setting;
FIG. 2 is a schematic view of a driver shift control.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout.
Since the basic operation structure and operation principle of the electric vehicle are well known to those skilled in the art, they are not described in detail herein.
Specific embodiments of the present invention will be described in detail below with reference to fig. 1-2.
Example 1
A PRND gear control method for an electric vehicle comprises a PRND gear control device, a central control touch screen, a vehicle control unit, a gear shifting controller and a clutch gearbox assembly;
the central control touch screen is a touch screen which is arranged on a central control platform of a cab and is used for interaction between a vehicle and a driver, can display information to the driver, and can collect instructions of the driver to the vehicle control unit through corresponding clicking and sliding gesture operations of the driver on the touch screen;
the TCU prompts serious gear failure, and the PRND gear control method comprises the following steps:
(1) a driver double-strikes the hit-control touch screen to disable the gear shift controller and wake up a pop-up gear operation area, wherein the gear operation area is used for replacing the operation of the PRND gear control device;
(2) the intention signal of the driver for shifting gears is transmitted through the gear operating area;
(3) after receiving an intention signal transmitted by a driver, the TVCU judges whether a target gear is an allowable gear;
(4) the TVCU judges whether the operation is allowed or not when the current gear is switched to the target gear;
(5) prompting unreasonable operation;
(6) executing a gear shifting operation according with a set rule;
(7) before powering down, the gear is set as P gear.
The gear operating area comprises a parking gear P, a reverse gear R, a neutral gear N and a traveling gear D.
The PRND gear control device is a knob type electronic wire control gear shifter.
The vehicle control unit is an intelligent unit for executing communication management, energy management and drive management functions.
The clutch gearbox assembly is a mechanism for executing the on-off and speed ratio of a transmission chain.
The gear shifting controller is an intelligent unit for carrying out target gear (speed ratio) decision, executing mechanism control, fault diagnosis and fault processing.
Example 2
A PRND gear control method for an electric vehicle comprises a PRND gear control device, a central control touch screen, a vehicle control unit, a gear shifting controller and a clutch gearbox assembly;
the central control touch screen is a touch screen which is arranged on a central control platform of a cab and is used for interaction between a vehicle and a driver, can display information to the driver, and can collect instructions of the driver to the vehicle control unit through corresponding clicking and sliding gesture operations of the driver on the touch screen;
the driver finds that the gear control is not available, and the method for controlling the PRND gear comprises the steps of:
(1) a driver double-strikes the hit-control touch screen to disable the gear shift controller and wake up a pop-up gear operation area, wherein the gear operation area is used for replacing the operation of the PRND gear control device;
(2) the intention signal of the driver for shifting gears is transmitted through the gear operating area;
(3) after receiving an intention signal transmitted by a driver, the TCU judges whether a target gear is an allowable gear;
(4) the TCU judges whether the operation is allowed or not when the current gear is switched to the target gear;
(5) prompting unreasonable operation;
(6) executing a gear shifting operation according with a set rule;
(7) before powering down, the gear is set as P gear.
The gear operating area comprises a parking gear P, a reverse gear R, a neutral gear N and a traveling gear D.
The PRND gear control device is a push-button electronic drive-by-wire shifter.
The vehicle control unit is an intelligent unit for executing communication management, energy management and drive management functions.
The clutch gearbox assembly is a mechanism for executing the on-off and speed ratio of a transmission chain.
The gear shifting controller is an intelligent unit for carrying out target gear (speed ratio) decision, executing mechanism control, fault diagnosis and fault processing.
The above embodiments are merely preferred embodiments of the present invention, and any simple modification, modification and substitution changes made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (6)
1. A PRND gear control method for an electric vehicle is characterized by comprising a PRND gear control device, a central control touch screen, a vehicle control unit, a gear shifting controller and a clutch gearbox assembly;
the central control touch screen is a touch screen which is arranged on a central control platform of a cab and is used for interaction between a vehicle and a driver, can display information to the driver, and can collect instructions of the driver to the vehicle control unit through corresponding clicking and sliding gesture operations of the driver on the touch screen;
when the TCU prompts a serious gear fault or a driver finds that gear control is not available, the control method of the PRND gear comprises the following steps:
(1) a driver double-strikes the hit-control touch screen to disable the gear shift controller and wake up a pop-up gear operation area, wherein the gear operation area is used for replacing the operation of the PRND gear control device;
(2) the intention signal of the driver for shifting gears is transmitted through the gear operating area;
(3) after the TVCU or the TCU receives an intention signal transmitted by a driver, judging whether a target gear is an allowable gear;
(4) the TVCU or the TCU judges whether the operation is allowed or not when the current gear is switched to the target gear;
(5) prompting unreasonable operation;
(6) executing a gear shifting operation according with a set rule;
(7) before powering down, the gear is set as P gear.
2. The electric vehicle PRND gear control method of claim 1, wherein the gear operating zones comprise park P, reverse R, neutral N, and drive D.
3. The method of claim 1, wherein the PRND range control device is an electronic shift-by-wire, and the shift-by-wire is lever, knob, or button.
4. The PRND gear control method of claim 1, wherein the vehicle controller is an intelligent unit performing communication management, energy management and drive management functions.
5. The method of claim 1, wherein the clutch transmission assembly is a mechanism that performs drive train make and break and speed ratio.
6. The method of claim 1, wherein the shift controller is an intelligent unit that performs target gear (ratio) decision making, actuator control, fault diagnosis and fault handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628943.4A CN111734821A (en) | 2020-07-02 | 2020-07-02 | PRND gear control method for electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628943.4A CN111734821A (en) | 2020-07-02 | 2020-07-02 | PRND gear control method for electric vehicle |
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| CN111734821A true CN111734821A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010628943.4A Pending CN111734821A (en) | 2020-07-02 | 2020-07-02 | PRND gear control method for electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112298156A (en) * | 2020-10-16 | 2021-02-02 | 武汉格罗夫氢能汽车有限公司 | Anti-misoperation gear management system and method for fuel cell hydrogen energy automobile |
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| CN103836173A (en) * | 2012-11-27 | 2014-06-04 | 大陆汽车系统公司 | On-screen gear selector for automatic trasmission |
| CN104421417A (en) * | 2013-09-03 | 2015-03-18 | 上海通用汽车有限公司 | Touch electronic selector and electronic gear shifting method |
| JP2016132302A (en) * | 2015-01-16 | 2016-07-25 | 株式会社東海理化電機製作所 | Shift position selection device |
| US20170120930A1 (en) * | 2015-10-28 | 2017-05-04 | Honda Motor Co., Ltd. | System and method for executing gesture based control of a vehicle system |
| CN107664957A (en) * | 2016-07-28 | 2018-02-06 | 比亚迪股份有限公司 | Emergency driving method, system and vehicle based on vehicle remote control |
| JP2019034732A (en) * | 2018-10-03 | 2019-03-07 | 株式会社ユピテル | Device and program |
| CN209180349U (en) * | 2018-11-26 | 2019-07-30 | 北京长城华冠汽车科技股份有限公司 | Automobile gear level adjusts system |
| CN110878831A (en) * | 2019-11-26 | 2020-03-13 | 贵州凯星液力传动机械有限公司 | Gear shifting control device for shale gas fracturing truck |
| CN111306289A (en) * | 2018-12-11 | 2020-06-19 | Sl株式会社 | Speed change device for vehicle |
-
2020
- 2020-07-02 CN CN202010628943.4A patent/CN111734821A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836173A (en) * | 2012-11-27 | 2014-06-04 | 大陆汽车系统公司 | On-screen gear selector for automatic trasmission |
| CN104421417A (en) * | 2013-09-03 | 2015-03-18 | 上海通用汽车有限公司 | Touch electronic selector and electronic gear shifting method |
| JP2016132302A (en) * | 2015-01-16 | 2016-07-25 | 株式会社東海理化電機製作所 | Shift position selection device |
| US20170120930A1 (en) * | 2015-10-28 | 2017-05-04 | Honda Motor Co., Ltd. | System and method for executing gesture based control of a vehicle system |
| CN107664957A (en) * | 2016-07-28 | 2018-02-06 | 比亚迪股份有限公司 | Emergency driving method, system and vehicle based on vehicle remote control |
| JP2019034732A (en) * | 2018-10-03 | 2019-03-07 | 株式会社ユピテル | Device and program |
| CN209180349U (en) * | 2018-11-26 | 2019-07-30 | 北京长城华冠汽车科技股份有限公司 | Automobile gear level adjusts system |
| CN111306289A (en) * | 2018-12-11 | 2020-06-19 | Sl株式会社 | Speed change device for vehicle |
| CN110878831A (en) * | 2019-11-26 | 2020-03-13 | 贵州凯星液力传动机械有限公司 | Gear shifting control device for shale gas fracturing truck |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112298156A (en) * | 2020-10-16 | 2021-02-02 | 武汉格罗夫氢能汽车有限公司 | Anti-misoperation gear management system and method for fuel cell hydrogen energy automobile |
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Application publication date: 20201002 |