CN112721655A - Regenerative braking energy recovery control device and control method for electric automobile - Google Patents
Regenerative braking energy recovery control device and control method for electric automobile Download PDFInfo
- Publication number
- CN112721655A CN112721655A CN202110089358.6A CN202110089358A CN112721655A CN 112721655 A CN112721655 A CN 112721655A CN 202110089358 A CN202110089358 A CN 202110089358A CN 112721655 A CN112721655 A CN 112721655A
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- energy recovery
- regenerative braking
- braking energy
- control device
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- 238000011084 recovery Methods 0.000 title claims abstract description 29
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001960 triggered effect Effects 0.000 claims description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Classifications
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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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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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
- B60L7/10—Dynamic electric regenerative braking
- B60L7/18—Controlling the braking effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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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
- B60L2250/00—Driver interactions
- B60L2250/26—Driver interactions by pedal actuation
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- 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
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a regenerative braking energy recovery control device of an electric vehicle and a control method thereof, wherein the regenerative braking energy recovery control device comprises a signal acquisition unit, a compensation unit, a vehicle control unit and a driving unit; the signal acquisition unit is electrically connected with the compensation unit, the compensation unit is electrically connected with the vehicle control unit, and the vehicle control unit is electrically connected with the driving unit. The regenerative braking energy recovery control device and the control method thereof for the electric automobile are convenient to use, and the deceleration of the whole automobile is also unchanged on the premise of unchanging the pedal stroke by the matching arrangement of the pedal stroke sensor, the electronic hydraulic power assisting unit, the whole automobile controller and the driving motor; the brake efficiency is improved, and the driving experience is improved.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a regenerative braking energy recovery control device and a regenerative braking energy recovery control method for an electric automobile.
Background
During driving, the dragging torque (coastdown) sent by the vehicle control unit changes along with the change of the vehicle speed. During braking, the deceleration of the whole vehicle is gradually reduced under the condition of constant brake pedal stroke. The main reason is that the coastdown value decreases with decreasing vehicle speed, and the braking torque generated by energy recovery decreases although the mechanical braking at the driver pedal stroke does not fluctuate. Resulting in a reduction in overall vehicle deceleration throughout braking even if the pedal travel is not changed.
Based on the above situation, the invention provides a regenerative braking energy recovery control device for an electric vehicle and a control method thereof, which can effectively solve the above problems.
Disclosure of Invention
The invention aims to provide a regenerative braking energy recovery control device and a regenerative braking energy recovery control method for an electric vehicle. The regenerative braking energy recovery control device and the control method thereof for the electric automobile are convenient to use, and the deceleration of the whole automobile is also unchanged on the premise of unchanging the pedal stroke by the matching arrangement of the pedal stroke sensor, the electronic hydraulic power assisting unit, the whole automobile controller and the driving motor; the brake efficiency is improved, and the driving experience is improved.
The invention is realized by the following technical scheme:
a regenerative braking energy recovery control device for an electric vehicle comprises a signal acquisition unit, a compensation unit, a vehicle control unit and a driving unit;
the signal acquisition unit is electrically connected with the compensation unit, the compensation unit is electrically connected with the vehicle control unit, and the vehicle control unit is electrically connected with the driving unit.
The invention aims to provide a regenerative braking energy recovery control device and a regenerative braking energy recovery control method for an electric vehicle. The regenerative braking energy recovery control device and the control method thereof for the electric automobile are convenient to use, and the deceleration of the whole automobile is also unchanged on the premise of unchanging the pedal stroke by the matching arrangement of the pedal stroke sensor, the electronic hydraulic power assisting unit, the whole automobile controller and the driving motor; the brake efficiency is improved, and the driving experience is improved.
Preferably, the driving unit is a driving motor.
Preferably, the signal acquisition unit is a pedal stroke sensor.
Preferably, the compensation unit is an electronic hydraulic power assisting unit.
According to another aspect of the present invention, there is provided a control method of a regenerative braking energy recovery control device for an electric vehicle, the control method comprising the steps of:
step S1: the brake pedal is stepped on, a pedal stroke sensor is triggered, and the pedal stroke sensor sends a signal to the electronic hydraulic power assisting unit;
step S2: the electronic hydraulic power assisting unit adds the braking torque converted by the pedal stroke and the dragging torque fed back by the vehicle control unit to obtain a total braking torque;
step S3: the electronic hydraulic power assisting unit sends the total braking torque to the vehicle control unit;
step S4: and the vehicle control unit controls the motor to output the total braking torque for reverse dragging.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the regenerative braking energy recovery control device and the control method thereof for the electric automobile are convenient to use, and the deceleration of the whole automobile is also unchanged on the premise of unchanging the pedal stroke by the matching arrangement of the pedal stroke sensor, the electronic hydraulic power assisting unit, the whole automobile controller and the driving motor; the brake efficiency is improved, and the driving experience is improved.
Drawings
FIG. 1 is a schematic block diagram of a control apparatus according to the present invention;
fig. 2 is a flow schematic block diagram of the control method of the present invention.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
Example 1:
as shown in fig. 1 to 2, a regenerative braking energy recovery control device for an electric vehicle includes a signal acquisition unit, a compensation unit, a vehicle control unit, and a driving unit;
the signal acquisition unit is used for receiving the treading degree of the pedal, converting the treading degree into a numerical value and sending the numerical value to the compensation unit;
the compensation unit is used for receiving the dragging torque and the braking torque sent by the vehicle control unit and the signal acquisition unit and combining the dragging torque and the braking torque to obtain a total braking torque;
the whole vehicle controller is used for controlling the whole vehicle;
the driving unit is used for generating deceleration to decelerate the automobile.
The signal acquisition unit is electrically connected with the compensation unit, the compensation unit is electrically connected with the vehicle control unit, and the vehicle control unit is electrically connected with the driving unit.
According to another aspect of the present invention, there is provided a control method of a regenerative braking energy recovery control device for an electric vehicle, the control method comprising the steps of:
step S1: the brake pedal is stepped on, a pedal stroke sensor is triggered, and the pedal stroke sensor sends a signal to the electronic hydraulic power assisting unit;
step S2: the electronic hydraulic power assisting unit adds the braking torque converted by the pedal stroke and the dragging torque fed back by the vehicle control unit to obtain a total braking torque;
step S3: the electronic hydraulic power assisting unit sends the total braking torque to the vehicle control unit;
step S4: and the vehicle control unit controls the motor to output the total braking torque for reverse dragging.
Example 2:
as shown in fig. 1 to 2, a regenerative braking energy recovery control device for an electric vehicle includes a signal acquisition unit, a compensation unit, a vehicle control unit, and a driving unit;
the signal acquisition unit is used for receiving the treading degree of the pedal, converting the treading degree into a numerical value and sending the numerical value to the compensation unit;
the compensation unit is used for receiving the dragging torque and the braking torque sent by the vehicle control unit and the signal acquisition unit and combining the dragging torque and the braking torque to obtain a total braking torque;
the whole vehicle controller is used for controlling the whole vehicle;
the driving unit is used for generating deceleration to decelerate the automobile.
The signal acquisition unit is electrically connected with the compensation unit, the compensation unit is electrically connected with the vehicle control unit, and the vehicle control unit is electrically connected with the driving unit.
Further, in another embodiment, the driving unit is a driving motor.
Further, in another embodiment, the signal acquisition unit is a pedal stroke sensor.
The pedal stroke sensor can simply and directly transmit the degree of treading the pedal, and the working efficiency of the energy recovery device is improved.
Further, in another embodiment, the compensation unit is an electro-hydraulic booster unit.
According to another aspect of the present invention, there is provided a control method of a regenerative braking energy recovery control device for an electric vehicle, the control method comprising the steps of:
step S1: the brake pedal is stepped on, a pedal stroke sensor is triggered, and the pedal stroke sensor sends a signal to the electronic hydraulic power assisting unit;
step S2: the electronic hydraulic power assisting unit adds the braking torque converted by the pedal stroke and the dragging torque fed back by the vehicle control unit to obtain a total braking torque;
step S3: the electronic hydraulic power assisting unit sends the total braking torque to the vehicle control unit;
step S4: and the vehicle control unit controls the motor to output the total braking torque for reverse dragging.
According to the description and the drawings of the invention, a person skilled in the art can easily manufacture or use the regenerative braking energy recovery control device for an electric vehicle and the control method thereof, and can generate the positive effects recorded in the invention.
Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.
Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (5)
1. The utility model provides an electric automobile regenerative braking energy recovery controlling means which characterized in that: the system comprises a signal acquisition unit, a compensation unit, a vehicle control unit and a driving unit;
the signal acquisition unit is electrically connected with the compensation unit, the compensation unit is electrically connected with the vehicle control unit, and the vehicle control unit is electrically connected with the driving unit.
2. The regenerative braking energy recovery control device for the electric vehicle according to claim 1, characterized in that: the driving unit is a driving motor.
3. The regenerative braking energy recovery control device for the electric vehicle according to claim 1, characterized in that: the signal acquisition unit is a pedal stroke sensor.
4. The regenerative braking energy recovery control device for the electric vehicle according to claim 1, characterized in that: the compensation unit is an electronic hydraulic power assisting unit.
5. The control method of the regenerative braking energy recovery control device for the electric vehicle according to claim 1, characterized in that: the control method comprises the following steps:
step S1: the brake pedal is stepped on, a pedal stroke sensor is triggered, and the pedal stroke sensor sends a signal to the electronic hydraulic power assisting unit;
step S2: the electronic hydraulic power assisting unit adds the braking torque converted by the pedal stroke and the dragging torque fed back by the vehicle control unit to obtain a total braking torque;
step S3: the electronic hydraulic power assisting unit sends the total braking torque to the vehicle control unit;
step S4: and the vehicle control unit controls the motor to output the total braking torque for reverse dragging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110089358.6A CN112721655A (en) | 2021-01-22 | 2021-01-22 | Regenerative braking energy recovery control device and control method for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110089358.6A CN112721655A (en) | 2021-01-22 | 2021-01-22 | Regenerative braking energy recovery control device and control method for electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112721655A true CN112721655A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110089358.6A Pending CN112721655A (en) | 2021-01-22 | 2021-01-22 | Regenerative braking energy recovery control device and control method for electric automobile |
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| CN (1) | CN112721655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113386716A (en) * | 2021-07-01 | 2021-09-14 | 北京汽车集团越野车有限公司 | Control method, device and device for vehicle brake pedal and automobile |
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| US20030184154A1 (en) * | 2002-04-02 | 2003-10-02 | Ford Global Technologies, Inc. | Vehicle brake system having adaptive torque control |
| JP2014230457A (en) * | 2013-05-27 | 2014-12-08 | 日産自動車株式会社 | Braking control device for vehicle |
| CN106904079A (en) * | 2017-02-27 | 2017-06-30 | 中国第汽车股份有限公司 | A kind of regenerating brake control method of pure electric automobile |
| CN107225978A (en) * | 2017-05-03 | 2017-10-03 | 北京新能源汽车股份有限公司 | Electric vehicle braking method and device and electric vehicle |
| CN207078011U (en) * | 2017-04-21 | 2018-03-09 | 阿尔特汽车技术股份有限公司 | The regenerative braking energy reclaiming system of electric automobile |
| CN109130887A (en) * | 2018-09-20 | 2019-01-04 | 北京新能源汽车股份有限公司 | Electric brake compensation control method and device and automobile |
-
2021
- 2021-01-22 CN CN202110089358.6A patent/CN112721655A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030184154A1 (en) * | 2002-04-02 | 2003-10-02 | Ford Global Technologies, Inc. | Vehicle brake system having adaptive torque control |
| JP2014230457A (en) * | 2013-05-27 | 2014-12-08 | 日産自動車株式会社 | Braking control device for vehicle |
| CN106904079A (en) * | 2017-02-27 | 2017-06-30 | 中国第汽车股份有限公司 | A kind of regenerating brake control method of pure electric automobile |
| CN207078011U (en) * | 2017-04-21 | 2018-03-09 | 阿尔特汽车技术股份有限公司 | The regenerative braking energy reclaiming system of electric automobile |
| CN107225978A (en) * | 2017-05-03 | 2017-10-03 | 北京新能源汽车股份有限公司 | Electric vehicle braking method and device and electric vehicle |
| CN109130887A (en) * | 2018-09-20 | 2019-01-04 | 北京新能源汽车股份有限公司 | Electric brake compensation control method and device and automobile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113386716A (en) * | 2021-07-01 | 2021-09-14 | 北京汽车集团越野车有限公司 | Control method, device and device for vehicle brake pedal and automobile |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Applicant after: United New Energy Automobile Co.,Ltd. Address before: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Applicant before: Hozon New Energy Automobile Co., Ltd. Address after: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Applicant after: Hozon New Energy Automobile Co., Ltd. Address before: 314500 988 Tong Tong Road, Wu Tong Street, Tongxiang, Jiaxing, Zhejiang Applicant before: Hozon New Energy Automobile Co., Ltd. |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |