CN202279101U - Servo braking system for four-wheel drive electric automobile - Google Patents
Servo braking system for four-wheel drive electric automobile Download PDFInfo
- Publication number
- CN202279101U CN202279101U CN2011203306275U CN201120330627U CN202279101U CN 202279101 U CN202279101 U CN 202279101U CN 2011203306275 U CN2011203306275 U CN 2011203306275U CN 201120330627 U CN201120330627 U CN 201120330627U CN 202279101 U CN202279101 U CN 202279101U
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- brake
- braking
- hydraulic
- vacuum
- braking system
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model provides a servo braking system for a four-wheel drive electric automobile. The system is mainly composed of the following components: an electric vacuum pump, a vacuum pot, a vacuum booster, a brake pedal, a braking master pump, a braking pressure proportion adjusting valve, a brake and a whole car controller. According to the system, a traditional car hydraulic braking system is combined with a motor regenerative braking system to use; on one hand, the abrasion of the traditional car hydraulic braking system is reduced and the braking energy is recycled; and on the other hand, the advantage that the response of a motor braking moment is fast is brought into full play and more precise anti-lock braking control is realized.
Description
Technical field
The utility model relates to a kind of brake system of car, relates to a kind of servo braking system that is used for four-wheel driving electric vehicle especially.
Prior art
The orthodox car hydraulic brake system has advantages such as lock torque is big, the low speed deceleration and stopping performance is good, but can't realize that braking energy reclaims.And the motor regenerative brake can reclaim and utilize braking kinetic energy, brakeless character of heat-fading problem, and the lock torque response is fast, but the low speed deceleration and stopping performance is bad, and the lock torque that can provide is less.Both combine use can reduce conventional hydraulic brake system wearing and tearing on the one hand, reclaims braking energy, can give full play to the fast advantage of motor braking moment responses on the other hand, realizes anti-lock control more accurately.
Summary of the invention
The described servo braking system of the utility model, this cover brake system mainly is made up of following these parts: electric vacuum pump, vacuum reservoir, vacuum booster, brake pedal, master brake cylinder, brake-pressure ratio adjusting valve, drg and entire car controller.
Wherein electric vacuum pump, vacuum reservoir and vacuum booster have been formed vacuum assisted hydraulic brake system.What this system adopted is the double circuit hydraulic braking system that diagonal line is arranged, promptly left front wheel cylinder and right back wheel cylinder are a hydraulic circuit, and right front wheel cylinder and left back wheel cylinder are another hydraulic circuit.In the pipeline of hydraulic brake system, increased the brake-pressure ratio adjusting valve, this control cock can be controlled the size of the hydraulic braking force of each wheel.
Be equiped with the brake pedal displacement pickup on the brake pedal, this sensor links to each other with entire car controller.In braking procedure; Entire car controller according to brake pedal displacement confirm the size of target total braking force; Confirm simultaneously the size of motor regenerative braking power, in the brakig force distribution strategy, determine actual reproduction braking force and hydraulic braking force then, and send it to and carry out in the control corresponding module according to information such as the speed of a motor vehicle, storage battery state-of-charges; Information transmission between the module is carried out through the CAN bus, controls corresponding hydraulic braking force through regulating the brake-pressure ratio adjusting valve.
Initial stage (pedal displacement is less) in slight braking or slow braking preferentially applies the motor regenerative brake.This moment, the general speed of a motor vehicle was higher, and efficiency of motor is also higher, is the main phase of energy recovery.Moderate and severe glancing impact, regenerative brake power and hydraulic braking force are parallel to be implemented, and guarantees preferentially that wherein the maximum of motor regenerative brake power is implemented.Can on the basis that guarantees braking performance of vehicle, reclaim braking energy as much as possible like this.Can suitably reduce the size of motor regenerative brake power when severe and emergency braking, prevent the too early locking of each wheel, guarantee insensitivity.
Said brake system combines use with orthodox car hydraulic brake system and motor regeneration brake system; Can reduce conventional hydraulic brake system wearing and tearing on the one hand; Reclaim braking energy; Can give full play to the fast advantage of motor braking moment responses on the other hand, realize more accurate anti-lock control.
Description of drawings
Fig. 1 is the constructional drawing of the described brake system of the utility model.
Fig. 2 is the software controlling strategies FB(flow block) of the described brake system of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the described brake system of the utility model is described further.
The described servo braking system of the utility model, this cover brake system mainly is made up of following these parts: electric vacuum pump, vacuum reservoir, vacuum booster, brake pedal, master brake cylinder, brake-pressure ratio adjusting valve, drg and entire car controller.
Wherein electric vacuum pump, vacuum reservoir and vacuum booster have been formed vacuum assisted hydraulic brake system.What this system adopted is the double circuit hydraulic braking system that diagonal line is arranged, promptly left front wheel cylinder and right back wheel cylinder are a hydraulic circuit, and right front wheel cylinder and left back wheel cylinder are another hydraulic circuit.In the pipeline of hydraulic brake system, increased the brake-pressure ratio adjusting valve, this control cock can be controlled the size of the hydraulic braking force of each wheel.
Be equiped with brake pedal displacement pickup (not shown) on the brake pedal, this sensor links to each other with entire car controller.In braking procedure; Entire car controller according to brake pedal displacement confirm the size of target total braking force; Confirm simultaneously the size of motor regenerative braking power, in the brakig force distribution strategy, determine actual reproduction braking force and hydraulic braking force then, and send it to and carry out in the control corresponding module according to information such as the speed of a motor vehicle, storage battery state-of-charges; Information transmission between the module is carried out through the CAN bus, controls corresponding hydraulic braking force through regulating the brake-pressure ratio adjusting valve.
The preferred embodiment that the above is merely the utility model is not the protection domain that is used to limit the utility model.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement and improvement etc., all should be included within the protection domain of the utility model.
Those skilled in the art can make replacement or modification to some contents of the utility model according to disclosed content of the utility model and the art technology of being grasped; But these replacements or modification should not be regarded as breaking away from the design of the utility model, and these replacements or modification are all in the utility model requires the claim scope of protection.
Claims (1)
1. servo braking system that is used for four-wheel driving electric vehicle; It is characterized in that this system is made up of following these parts: electric vacuum pump, vacuum reservoir, vacuum booster, brake pedal, master brake cylinder, brake-pressure ratio adjusting valve, drg and entire car controller; Wherein electric vacuum pump, vacuum reservoir and vacuum booster have been formed vacuum assisted hydraulic brake system; What this system adopted is the double circuit hydraulic braking system that diagonal line is arranged; Be that left front wheel cylinder and right back wheel cylinder are a hydraulic circuit; Right front wheel cylinder and left back wheel cylinder are another hydraulic circuit, and the brake-pressure ratio adjusting valve is arranged in the pipeline of hydraulic brake system, and this control cock can be controlled the size of the hydraulic braking force of each wheel; Be equiped with the brake pedal displacement pickup on the brake pedal, this sensor links to each other with entire car controller; Total vehicle controller is through CAN bus transmission information in each module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203306275U CN202279101U (en) | 2011-09-06 | 2011-09-06 | Servo braking system for four-wheel drive electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203306275U CN202279101U (en) | 2011-09-06 | 2011-09-06 | Servo braking system for four-wheel drive electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202279101U true CN202279101U (en) | 2012-06-20 |
Family
ID=46225278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203306275U Expired - Fee Related CN202279101U (en) | 2011-09-06 | 2011-09-06 | Servo braking system for four-wheel drive electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202279101U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826081A (en) * | 2012-09-12 | 2012-12-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile brake system, method and automobile with brake system |
| CN102923128A (en) * | 2012-10-11 | 2013-02-13 | 吉林大学 | Method for controlling four-wheel hub motor to separately drive regenerative braking system of electric vehicle |
| CN107253452A (en) * | 2017-06-28 | 2017-10-17 | 北京新能源汽车股份有限公司 | Electric automobile constant-speed-cruise control method and device during battery limitation charging |
| CN110861503A (en) * | 2019-11-27 | 2020-03-06 | 南京巨基汽车电子有限公司 | Intelligent new energy automobile energy feedback braking system and control method |
| CN112758070A (en) * | 2021-01-04 | 2021-05-07 | 东风柳州汽车有限公司 | Vacuum booster assembly |
| CN112758068A (en) * | 2021-01-04 | 2021-05-07 | 东风柳州汽车有限公司 | Brake master cylinder |
-
2011
- 2011-09-06 CN CN2011203306275U patent/CN202279101U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826081A (en) * | 2012-09-12 | 2012-12-19 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile brake system, method and automobile with brake system |
| CN102923128A (en) * | 2012-10-11 | 2013-02-13 | 吉林大学 | Method for controlling four-wheel hub motor to separately drive regenerative braking system of electric vehicle |
| CN107253452A (en) * | 2017-06-28 | 2017-10-17 | 北京新能源汽车股份有限公司 | Electric automobile constant-speed-cruise control method and device during battery limitation charging |
| CN107253452B (en) * | 2017-06-28 | 2020-03-10 | 北京新能源汽车股份有限公司 | Method and device for controlling constant-speed cruise of electric vehicle during limited charging of battery |
| CN110861503A (en) * | 2019-11-27 | 2020-03-06 | 南京巨基汽车电子有限公司 | Intelligent new energy automobile energy feedback braking system and control method |
| CN112758070A (en) * | 2021-01-04 | 2021-05-07 | 东风柳州汽车有限公司 | Vacuum booster assembly |
| CN112758068A (en) * | 2021-01-04 | 2021-05-07 | 东风柳州汽车有限公司 | Brake master cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120620 Termination date: 20120906 |