CN206186805U - Electric automobile braking system and electric automobile - Google Patents
Electric automobile braking system and electric automobile Download PDFInfo
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- CN206186805U CN206186805U CN201621276563.4U CN201621276563U CN206186805U CN 206186805 U CN206186805 U CN 206186805U CN 201621276563 U CN201621276563 U CN 201621276563U CN 206186805 U CN206186805 U CN 206186805U
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Abstract
The utility model provides an electric automobile braking system and electric automobile. The electric automobile braking system includes: the brake pedal rotation angle sensor is connected with the brake pedal to acquire a brake pedal rotation angle signal; the electric power-assisted belt brake master cylinder is connected with the brake pedal; the electric power-assisted belt brake master cylinder is connected with the ABS control unit through a brake pipe, and the ABS control unit is connected with the brake through the brake pipe; the driving motor is connected with the wheels; the VCU is connected with the brake pedal corner sensor and is respectively connected with the ABS control unit and the VCU in a control way; the VCU acquires a brake pedal rotation angle signal, and sends a first brake signal to the driving motor and a second brake signal to the electric power-assisted belt brake master cylinder controller. The utility model discloses an electric automobile braking system can accurate calculation driver's demand braking torque and braking deceleration, can realize motor regenerative braking optimal control, improves the efficiency that braking energy retrieved, improves the ride comfort of braking process.
Description
Technical field
The utility model is related to electric automobile to manufacture field, more particularly to a kind of braking system of electric car and electronic vapour
Car.
Background technology
Along with scientific and technological progress with rapid changepl. never-ending changes and improvements, people have become to the pursuit of quality of life also more and more higher, automobile
The essential vehicles of people's go off daily, people are to the requirement of the comfortableness of automobile, security, economy and the feature of environmental protection
It is more and more fastidious.
Electric automobile has led automobile future thrust as the leading force of new-energy automobile, electric automobile by
It is progressive enter the daily life of people.
Present electric automobile, major part is transformed by traditional gasoline car, and brakes is on the basis of original oil car
On done adjustment improve, Brake energy recovery is realized by motor braking；Motor braking and hydraulic braking are parallel work
Mode, i.e. brake fluid system is that simple physics is superimposed with motor braking.Such parallel way, the defect for existing is bright
Aobvious, in the braking starting stage, deceleration is sufficiently large, but is very easy to cause wheel lock up phenomenon, but occurs to embrace in wheel
When dead, motor braking just exits energy-recuperation system, so causes energy recovery efficiency too low, meanwhile, exited in motor braking
When, total brake force is reduced suddenly, causes vehicle deceleration to be undergone mutation, and the ride comfort of vehicle travel process is deteriorated.
Utility model content
In order to overcome, motor braking energy recovery efficiency in the prior art is low, influence the technical problem of automobile ride, this
Utility model provides a kind of braking system of electric car and electric automobile.
In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that：
The utility model provides a kind of braking system of electric car, including：
Brake pedal rotary angle transmitter, is connected with brake pedal, obtains brake pedal angular signal；
Electric boosted band brake master cylinder, is connected with the brake pedal；
The electric boosted band brake master cylinder is connected by brake pipe with ABS control unit, and the ABS control unit is led to
Brake pipe is crossed to be connected with brake；
Motor, is connected with wheel；
VCU, is connected with brake pedal rotary angle transmitter, and with the ABS control unit and the VCU company of control respectively
Connect；The VCU obtains the brake pedal angular signal, and to the first brake signal of motor transmission, to the electricity
The controller of dynamic boosting belt master cylinder sends the second brake signal.
Furthermore, it is understood that in described braking system of electric car, also including：
Wheel speed sensors, are connected with ABS control unit control.
Furthermore, it is understood that in described braking system of electric car, the motor passes through drive axle and front vehicle wheel
Connection.
Furthermore, it is understood that in described braking system of electric car, between the VCU and the ABS control unit, described
Connected by CAN respectively between electric boosted band brake master cylinder and the ABS control unit.
Furthermore, it is understood that in described braking system of electric car, also including：
Electronic parking controller, is connected with the control of electronic clamp, and the electronic clamp are installed on the trailing wheel of automobile.
Furthermore, it is understood that in described braking system of electric car, the electric boosted band brake master cylinder and the braking
Pedal is bolted.
The utility model additionally provides a kind of electric automobile, including above-mentioned braking system of electric car.
The beneficial effects of the utility model are：Braking system of electric car of the present utility model can accurately calculate driver and need
The braking moment and braking deceleration asked, are capable of achieving motor regenerative braking optimum control, improve the efficiency of Brake energy recovery, than
Brakes organic efficiency originally is high by more than 20%.And it is gentle to realize that motor braking and hydraulic system are braked
Excessively switching so that when motor regenerative braking is exited, braking moment can obtain orderly supplement so that braking procedure
Ride comfort is improved.
Brief description of the drawings
Fig. 1 represents the theory structure connection diagram of braking system of electric car in the utility model embodiment.
Specific embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and specific implementation
Example is described in detail to the utility model.
Shown in reference picture 1, the utility model provides a kind of braking system of electric car, including：Brake pedal corner is passed
Sensor 2, is connected with brake pedal 1, obtains brake pedal angular signal；Electric boosted band brake master cylinder (E-Booster) 3, with
The brake pedal 1 is connected；The electric boosted band brake master cylinder 3 is connected by brake pipe with ABS control unit 5, described
ABS control unit 5 is connected by brake pipe with brake；Motor 10, is connected with wheel；VCU (entire car controller) 17,
It is connected with brake pedal rotary angle transmitter 2, and controls to be connected respectively with the ABS control unit 5 and the VCU17；It is described
VCU17 obtains the brake pedal angular signal, and sends the first brake signal to the motor 10, electronic helped to described
The controller of power band brake master cylinder sends the second brake signal.
Specifically, in braking system of electric car of the present utility model, brake pedal rotary angle transmitter 2 and brake pedal
1 connection, the corner produced when being trampled by brake pedal 1 changes to obtain brake pedal angular signal.VCU17 obtains braking
Pedal angular signal, can learn operator brake demand torque and braking deceleration.Total systems of the VCU17 required for by braking
Dynamic torque distributes to motor 10 and electric boosted band brake master cylinder 3.To wheel after motor the first brake signal of reception
Braked, and recover energy and charged.Electric boosted band brake master cylinder receives the second brake signal, and control hydraulic system is entered
Row braking.During hydraulic system is braked, electric boosted band brake master cylinder 3 can be given according to the second brake signal
Target hydraulic value carry out active boost.The braking system of electric car can accurately calculate the braking moment and system of operator demand
Dynamic deceleration, is capable of achieving motor regenerative braking optimum control, improves the efficiency of Brake energy recovery, is returned than original brakes
Receive efficiency high more than 20%.And the gentle excessive switching of motor braking and hydraulic system braking can be realized so that drive
When dynamic motor regenerative braking is exited, the orderly supplement of braking moment, the ride comfort of braking procedure is improved.
Further, since the system increases electric boosted band brake master cylinder 3 and brake pedal rotary angle transmitter 2, VCU17 passes through
The brake pedal angular signal of the collection of brake pedal rotary angle transmitter 2 controls motor 10 and electric boosted band brake master cylinder
3, so as to realize the collaboration or switching of motor braking and hydraulic braking.The electric vacuum pump in existing brakes can be removed
And the component such as vacuum sensor, vacuum tube, so as to simplify the structure of brakes, component costs are reduced, save cabin
Interior space, more arrangement spaces are provided to miscellaneous part.
Furthermore, it is understood that braking system of electric car of the present utility model also includes：Wheel speed sensors, control with the ABS
The control connection of unit processed 5.Wheel speed sensors 9, wheel speed sensors 11, wheel speed sensors 14 and wheel speed sensors 15 are realized to four
The collection of the rotating speed of individual wheel, is that ABS control unit 5 provides vehicle wheel rotational speed.Connect wheel speed sensors 9, wheel speed sensors 11, wheel
Fast sensor 14 and wheel speed sensors 15 are connected with ABS control unit 5 respectively.
In addition, wheel and brake 8, wheel and brake 12, wheel and brake 13 and wheel and brake 16 pass through
Brake hard tube is connected with ABS control unit 5 respectively.Electric boosted band brake master cylinder 3 is by brake hard tube and ABS control unit 5
It is connected.Brake hard tube ensure that the quick response of brake fluid between part, it is ensured that braking is shortened while braking effect and is rung
Between seasonable.Hard tube connection between above all parts, realizes including electric boosted band brake master cylinder 3, ABS control unit 5
With the composition of the brake fluid system of brake.
In addition, in order to ensure the reliability communicated between all parts, while be easy to the arrangement of electric-control system, by VCU17
It is connected by CAN respectively between ABS control unit 5, between electric boosted band brake master cylinder 3 and ABS control unit 5.
Furthermore, it is understood that braking system of electric car of the present utility model also includes：Electronic parking controller 22, it is and electronic
Clamp 21 and the control connection of electronic clamp 23, electronic clamp 21 and electronic clamp 23 are installed on the trailing wheel of automobile.When electronics is stayed
After vehicle controller 22 sends electronic parking signal, electronic clamp 21 and electronic clamp 23 can be realized embracing the braking of rear wheel
Tightly, stopping brake or braking in emergency circumstances are realized.
Mode is preferable to provide as one kind, brake pedal rotary angle transmitter 2 is arranged on brake pedal 1, can be direct
The change of the corner of brake pedal 1 is got, arrangement is easy, collection angular signal is simply direct.In addition, electric boosted band brake
Master cylinder 3 is bolted with the brake pedal 1, convenient to connect and dismantle.
In the present embodiment, motor 10 is connected with two front truck wheel drives respectively by drive axle 19 and drive axle 20
Connect.Two rear wheels are attached by rear drive shaft 18.Motor 10 can drive two front vehicle wheel operatings or to two
Individual front vehicle wheel is braked, and is charged with reclaiming moment of torsion.But, motor 10 is not limited to one, and motor 10 is not
It is limited to be connected with front-wheel drive, motor 10 may be arranged as being connected with rear wheel drive, or is set to equal with four wheels
Drive connection is set to, it is numerous to list herein.
It should be noted that brake pedal rotary angle transmitter 2 can be obtained according to the depth that driver tramples brake pedal
Brake pedal angular signal, the different brake force of different braking pedal angular signal correspondence and braking deceleration.VCU17 can be right
Brake pedal angular signal is analyzed and calculates, brake force and braking deceleration needed for having obtained.
VCU17 can obtain preceding brake pedal according to the brake pedal angular signal that brake pedal rotary angle transmitter 2 is obtained
The corresponding brake force of corner.VCU17 judge braking vehicle required for total braking torque, VCU17 turns round required total braking
Square distributes to motor 10 so that motor 10 is braked with maximum moment of torsion to wheel, and is recovered energy.If driving
The peak torque that motor 10 can be provided can not meet total braking torque, and remaining braking torque is distributed to electronic helping by VCU17
Power band brake master cylinder 3, electric boosted band brake master cylinder 3 passes through fluid pressure line control brake 8, brake 12, the and of brake 13
Brake 16 provides remaining braking torque.
When the regenerative braking of motor 10 is exited, required torque request is sent to electric boosted band brake by VCU17
Master cylinder 3.Electric boosted band brake master cylinder 3 carries out hydraulic braking by brake fluid system to each wheel so that motor
10 remaining braking moment when exiting braking obtains orderly supplement, so that the ride comfort of braking procedure is improved.
The utility model additionally provides a kind of electric automobile, including braking system of electric car as described above.
It should be noted that the electric automobile is the electric automobile for including above-mentioned braking system of electric car, it is above-mentioned electronic
The implementation of brake system of car embodiment is equally applicable in the embodiment of the electric automobile, can also reach identical technology
Effect, will not be repeated here.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.
In description of the present utility model, it is to be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
Degree ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", the side of the instruction such as " outward "
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplification is retouched
State, rather than indicate imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In description of the present utility model, unless otherwise indicated, " multiple " contains
Justice is two or more.
Above-described is preferred embodiment of the present utility model, it should be pointed out that for the ordinary person of the art
For, some improvements and modifications can also be made under the premise of principle described in the utility model is not departed from, these improve and moisten
Decorations are also in protection domain of the present utility model.
Claims (7)
1. a kind of braking system of electric car, it is characterised in that including：
Brake pedal rotary angle transmitter (2), is connected with brake pedal (1), obtains brake pedal angular signal；
Electric boosted band brake master cylinder (3), is connected with the brake pedal (1)；
The electric boosted band brake master cylinder (3) is connected by brake pipe with ABS control unit (5), the ABS control unit
(5) it is connected with brake by brake pipe；
Motor (10), is connected with wheel；
VCU (17), is connected with brake pedal rotary angle transmitter (2), and divides with the ABS control unit (5) and the VCU (17)
Kong Zhi not connect；The VCU (17) obtains the brake pedal angular signal, and sends the first system to the motor (10)
Dynamic signal, controller the second brake signal of transmission to electric boosted band brake master cylinder.
2. braking system of electric car according to claim 1, it is characterised in that also include：
Wheel speed sensors, are connected with the ABS control unit (5) control.
3. braking system of electric car according to claim 1, it is characterised in that the motor (10) is by forerunner
Moving axis is connected with front vehicle wheel.
4. braking system of electric car according to claim 1, it is characterised in that the VCU (17) and the ABS are controlled
Pass through CAN between unit (5), between the electric boosted band brake master cylinder (3) and the ABS control unit (5) respectively
Connection.
5. braking system of electric car according to claim 1, it is characterised in that also include：
Electronic parking controller (22), is connected with the control of electronic clamp, and the electronic clamp are installed on the trailing wheel of automobile.
6. braking system of electric car according to claim 1, it is characterised in that the electric boosted band brake master cylinder
(3) it is bolted with the brake pedal (1).
7. a kind of electric automobile, it is characterised in that including electric automobile system as claimed in any of claims 1 to 6
Dynamic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276563.4U CN206186805U (en) | 2016-11-25 | 2016-11-25 | Electric automobile braking system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276563.4U CN206186805U (en) | 2016-11-25 | 2016-11-25 | Electric automobile braking system and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206186805U true CN206186805U (en) | 2017-05-24 |
Family
ID=58723939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621276563.4U Active CN206186805U (en) | 2016-11-25 | 2016-11-25 | Electric automobile braking system and electric automobile |
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| Country | Link |
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| CN (1) | CN206186805U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740791A (en) * | 2017-01-18 | 2017-05-31 | 北京联合大学 | A kind of electrical servo brake apparatus of electric automobile |
| CN111823881A (en) * | 2020-07-10 | 2020-10-27 | 的卢技术有限公司 | Braking system and braking method for electric automobile |
| CN113829885A (en) * | 2021-10-11 | 2021-12-24 | 同济大学 | Hybrid vehicle energy recovery torque gradient control method and system based on smoothness |
-
2016
- 2016-11-25 CN CN201621276563.4U patent/CN206186805U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740791A (en) * | 2017-01-18 | 2017-05-31 | 北京联合大学 | A kind of electrical servo brake apparatus of electric automobile |
| CN111823881A (en) * | 2020-07-10 | 2020-10-27 | 的卢技术有限公司 | Braking system and braking method for electric automobile |
| CN113829885A (en) * | 2021-10-11 | 2021-12-24 | 同济大学 | Hybrid vehicle energy recovery torque gradient control method and system based on smoothness |
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