CN210554745U - Drive-by-wire brake device for electric vehicle - Google Patents
Drive-by-wire brake device for electric vehicle Download PDFInfo
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- CN210554745U CN210554745U CN201921199840.XU CN201921199840U CN210554745U CN 210554745 U CN210554745 U CN 210554745U CN 201921199840 U CN201921199840 U CN 201921199840U CN 210554745 U CN210554745 U CN 210554745U
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Abstract
The utility model discloses a drive-by-wire arresting gear for electric motor car, include: a service brake; one side of the vacuum booster is hinged with the service brake, and the vacuum booster is elastically connected with one end of a transmission rod of the vacuum booster; the piston cylinder is fixedly connected with the other side of the vacuum booster through a shell; a first pipe having one end connected to the master cylinder; a hydraulic control unit fixedly provided at an upper portion of a chassis of a vehicle; the wheel side brakes are connected with the hydraulic control unit and are arranged in one-to-one correspondence with four wheels of the electric vehicle; wherein, the hydraulic control unit includes: one end of the hydraulic pump is connected with the other end of the first pipeline; one end of the electromagnetic valve is connected with the other end of the hydraulic pump, and the other end of the electromagnetic valve is connected with the wheel brakes; a first electric motor connected with the hydraulic pump. The utility model provides high arresting gear's braking nature, easy operation.
Description
Technical Field
The utility model relates to an automobile braking technical field, concretely relates to drive-by-wire arresting gear for electric motor car.
Background
In recent years, electric vehicles have been developed rapidly, and meanwhile, some key technologies of electric vehicles have been broken through, so that the electric vehicle industry is also classified as a key novel strategic industry in China, and it is hoped that the structural adjustment and technical progress of the automobile industry in China are promoted by developing electric vehicles, and finally the 'curve overtaking' of the automobile industry is realized.
In a traditional fuel automobile, a braking device mostly realizes braking treatment of a vehicle in a vacuum boosting mode, so that the difficulty of the driver in building the vehicle is reduced, and the fatigue of the driver is reduced.
In a traditional fuel automobile, the braking of the automobile can be realized only by mechanically combining a brake pedal and a vacuum boosting device, an excessively complex technology is not needed, advanced Assistant Driving (ADAS) and unmanned driving technologies also become technical hotspots along with the development of electric automobiles, and in order to realize assistant driving and unmanned driving, the braking device is required to be in a wire control mode, so that the existing automobile braking device cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a drive-by-wire arresting gear for electric motor car has been developed. The utility model aims at designing out one kind and being applicable to electric automobile, through rational overall arrangement, combine together hydraulic control unit and vacuum helping hand system to solve among the prior art electric automobile and passed through vacuum helping hand system and mechanical transmission's braking process, thereby realized electric automobile braking system's stability better, improved electric vehicle braking system's braking nature and accuracy nature.
The utility model provides a technical scheme does:
a brake-by-wire device for an electric vehicle, comprising:
a service brake; and
one side of the vacuum booster is hinged with the service brake, and one end of a transmission rod of the vacuum booster is elastically connected with the service brake;
the piston cylinder is fixedly connected with the other side of the vacuum booster through a shell;
one end of the first pipeline is connected with the piston cylinder;
a hydraulic control unit fixedly provided at an upper portion of a chassis of a vehicle;
the wheel side brakes are connected with the hydraulic control unit and are arranged in one-to-one correspondence with four wheels of the electric vehicle;
wherein the hydraulic control unit includes:
one end of the hydraulic pump is connected with the other end of the first pipeline;
one end of the electromagnetic valve is connected with the other end of the hydraulic pump, and the other end of the electromagnetic valve is connected with the wheel brakes;
a first electric motor connected with the hydraulic pump.
Preferably, a piston rod of the piston cylinder is arranged inside the vacuum booster, and the piston rod is connected with the other end of the transmission rod.
Preferably, the method further comprises the following steps:
a second motor fixedly mounted on an upper portion of a chassis of the vehicle;
a vacuum fan connected with the second motor.
Preferably, the method further comprises the following steps:
a second pipeline, one end of which is connected with the vacuum fan,
and the vacuum tank is arranged on the upper part of the vacuum fan, and one end of the vacuum tank is connected with the other end of the second pipeline.
Preferably, the method further comprises the following steps:
and one end of the third pipeline is connected with the other end of the vacuum tank, and the other end of the third pipeline is connected with the vacuum booster.
Preferably, the service brake is arranged in the vehicle, and the vacuum booster, the wheel brakes, the piston cylinder, the first pipeline, the vacuum fan and the second pipeline are all arranged on the upper portion of a chassis of the vehicle.
Preferably, the method further comprises the following steps:
and the liquid storage tank is arranged at the upper part of the piston cylinder and communicated with the piston cylinder. Preferably, the bracket is fixedly connected with the base through a bolt.
Compared with the prior art, the utility model beneficial effect who has:
the utility model discloses a to traditional car braking system's characteristics, designed a drive-by-wire arresting gear suitable for electric vehicle, compared original vacuum boosting and mechanical transmission's braking system, owing to adopted hydraulic control unit to connect braking system, realized electric vehicle's stability better, added vacuum fan and vacuum tank in arresting gear moreover, better used vacuum boosting system in electric vehicle, great improvement electric vehicle's braking efficiency and braking precision.
Drawings
Fig. 1 is a schematic structural view of the brake-by-wire device for an electric vehicle according to the present invention.
Fig. 2 is a schematic structural view of the brake-by-wire pedal assembly of the present invention.
Fig. 3 is a schematic structural diagram of the hydraulic control unit of the present invention.
Fig. 4 is a schematic structural diagram of the wheel-side brake of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
As shown in fig. 1 and 4, the utility model provides a drive-by-wire brake device for electric vehicle, according to electric vehicle's characteristics, in order to be more meticulous on braking system, brake device passes through vacuum fan 130 and vacuum tank 120's design, combines hydraulic control unit 180, has improved electric vehicle braking system's accuracy nature, includes wherein: a pedal assembly 100, a first pipe 170, a second pipe 140, a third pipe 110, a vacuum tank 120, a vacuum fan 130, a second motor 150, a fourth pipe 160, a hydraulic control unit 180, and a plurality of wheel brakes 190.
As shown in fig. 2, the pedal assembly of the present invention includes: service brake 101, connecting shaft 102, transmission rod 103, vacuum booster 104, piston cylinder 105 and liquid storage tank 106, wherein, service brake 101 is arranged inside the vehicle, and the driver's seat bottom, vacuum booster 104 passes through connecting shaft 102 with service brake 101 and articulates, the outside casing one side that stretches out vacuum booster 104 of transmission rod 103 among vacuum booster 104 is fixed on service brake 101, piston cylinder 105 is fixed at the casing opposite side of vacuum booster 104, the piston rod of piston cylinder 105 sets up the inside at vacuum booster 104, and the piston rod is connected with transmission rod 103, at the upper portion fixed mounting liquid storage tank 106 of piston cylinder 105, and it is linked together with piston cylinder 105, pedal assembly 100 is through mounting bracket fixed mounting in the frame upper portion of vehicle.
As shown in fig. 3 and 4, in the present invention, one end of the first pipeline 170 is connected to the piston cylinder 105, the other end is connected to the oil inlet 185 of the hydraulic control unit 180, and is used for controlling the brake of the vehicle to increase, the brake fluid in the reservoir 106 flows in, one end of the fourth pipeline 160 is connected to the piston cylinder 105, the other end is connected to the oil inlet 186 of the hydraulic control unit 180, and is used for controlling the brake of the vehicle to decrease, the brake fluid in the reservoir 106 is sucked back, the first pipeline 170 and the fourth pipeline 160 are provided to prevent the vehicle from continuously braking, the hydraulic control unit 180 cannot pump the brake fluid to the wheel brake 190 in time, the vacuum fan 130 is fixed on the upper portion of the chassis of the vehicle through the support frame, the second motor 150 is connected to one side of the vacuum fan 130, the vacuum tank 120 is fixed on the upper portion of the vacuum fan 130, one end of the second pipeline 140 is, one end of the third pipeline 110 is connected with the vacuum booster 104, the other end is connected with the vacuum tank 120, the hydraulic control unit 180 is fixedly installed on the upper part of the chassis of the vehicle, and the hydraulic control unit 180 comprises: a hydraulic pump having two oil inlets 185 and 186 at one end thereof, one oil inlet 185 connected to the other end of the first pipeline 170, and the other oil inlet 186 connected to the fourth pipeline 160; one end of the electromagnetic valve is connected with the other end of the hydraulic pump, and the other end of the electromagnetic valve is connected with the wheel-side brakes 190; a first electric motor 187 connected to the hydraulic pump for driving the hydraulic pump.
As shown in fig. 3, the solenoid valve and the hydraulic pump are disposed inside a housing 188 of the hydraulic control unit, the first electric motor 187 is disposed outside the housing 188 of the hydraulic control unit, the oil outlet 181 is connected to a brake pipe connector 191 of a left front wheel of the vehicle through a pipeline, the oil outlet 182 is connected to a brake pipe connector 191 of a right front wheel of the vehicle through a pipeline, the oil outlet 183 is connected to a brake pipe connector 191 of a left rear wheel of the vehicle through a pipeline, and the oil outlet 184 is connected to a brake pipe connector 191 of a right rear wheel of the vehicle through a pipeline.
As shown in fig. 4, the structural schematic diagram of the wheel-side brake of the present invention includes: brake pipe connector 191, wheel limit brake caliper 192, mount 193 and brake disc 194, brake pipe connector 191 sets up in wheel limit brake caliper 192 upper portion, brake pipe connector 191 passes through the pipeline and is connected with hydraulic control unit 180, brake disc 194 passes through mount 193 and installs on the wheel of vehicle, wheel limit brake caliper 192 sets up the one side at the wheel, and the notch is seted up to the lower part of wheel limit brake caliper 192, brake disc 194 sets up inside the notch, wheel limit brake caliper 192 is stationary, brake disc 194 rotates with the wheel together.
The utility model discloses a working process does: the vacuum booster 104 maintains the vacuum state thereof through the vacuum tank 120, the vacuum fan 130 can maintain the vacuum state inside the vacuum tank 120, after a driver steps on the service brake 101, the driving rod 103 of the vacuum booster 104 is driven to generate boosting force to push the piston of the piston cylinder 105 to move, the piston cylinder 105 generates pressure to press the brake fluid in the fluid reservoir 106 out of the piston cylinder 105, the brake pressure is transmitted to the hydraulic control unit 180, when the hydraulic control unit 180 does not act, the pressure is directly transmitted to the wheel brakes 190 through the hydraulic control unit 180, the wheel brake calipers 192 clamp the brake disc 194, the pressure control unit 180 does not function, thereby playing a role of vehicle braking, when the brake pressure of the wheel brakes 190 needs to be reduced, the hydraulic control unit 180 drives the hydraulic pump through the first motor 187 inside, and pumps the brake fluid back to the fluid reservoir 106 through the fourth pipelines 160 and 105, thereby reducing the brake pressure; when the brake pressure needs to be increased, the hydraulic pump in the hydraulic control unit 180 pumps brake fluid from the reservoir 106 to the wheel brake 190 through the piston cylinder 105 and the first pipeline 170, so that the purpose of increasing the brake force is achieved, the pressure of the wheel brake is controlled by controlling the working state of the hydraulic pump, the purpose of controlling the brake force is achieved, and the brake-by-wire function is achieved.
The utility model provides a drive-by-wire arresting gear for electric motor car has realized electric vehicle's vacuum servo system through the combination of vacuum fan and vacuum tank to adopted hydraulic control unit to realize electric vehicle's drive-by-wire arresting gear, improved electric vehicle arresting gear's precision.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (7)
1. A brake-by-wire device for an electric vehicle, comprising:
a service brake; and
one side of the vacuum booster is hinged with the service brake, and one end of a transmission rod of the vacuum booster is elastically connected with the service brake;
the piston cylinder is fixedly connected with the other side of the vacuum booster through a shell;
one end of the first pipeline is connected with the piston cylinder;
a hydraulic control unit fixedly provided at an upper portion of a chassis of a vehicle;
the wheel side brakes are connected with the hydraulic control unit and are arranged in one-to-one correspondence with four wheels of the electric vehicle;
wherein the hydraulic control unit includes:
one end of the hydraulic pump is connected with the other end of the first pipeline;
one end of the electromagnetic valve is connected with the other end of the hydraulic pump, and the other end of the electromagnetic valve is connected with the wheel brakes;
a first electric motor connected with the hydraulic pump.
2. The brake-by-wire apparatus for electric vehicles according to claim 1, wherein a piston rod of the piston cylinder is disposed inside the vacuum booster, and the piston rod is connected to the other end of the transmission rod.
3. The brake-by-wire apparatus for electric vehicles according to claim 2, further comprising:
a second motor fixedly mounted on an upper portion of a chassis of the vehicle;
a vacuum fan connected with the second motor.
4. The brake-by-wire apparatus for an electric vehicle according to claim 3, further comprising:
a second pipeline, one end of which is connected with the vacuum fan,
and the vacuum tank is arranged on the upper part of the vacuum fan, and one end of the vacuum tank is connected with the other end of the second pipeline.
5. The brake-by-wire apparatus for an electric vehicle according to claim 4, further comprising:
and one end of the third pipeline is connected with the other end of the vacuum tank, and the other end of the third pipeline is connected with the vacuum booster.
6. The brake-by-wire apparatus for electric vehicles according to claim 5, wherein the service brakes are disposed inside the vehicle, the plurality of wheel brakes are disposed in one-to-one correspondence with tires of the vehicle, and the vacuum booster, the piston cylinder, the first conduit, the vacuum blower, and the second conduit are disposed on an upper portion of a chassis of the vehicle.
7. The brake-by-wire apparatus for an electric vehicle according to claim 6, further comprising:
and the liquid storage tank is arranged at the upper part of the piston cylinder and communicated with the piston cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199840.XU CN210554745U (en) | 2019-07-29 | 2019-07-29 | Drive-by-wire brake device for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199840.XU CN210554745U (en) | 2019-07-29 | 2019-07-29 | Drive-by-wire brake device for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210554745U true CN210554745U (en) | 2020-05-19 |
Family
ID=70622337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921199840.XU Active CN210554745U (en) | 2019-07-29 | 2019-07-29 | Drive-by-wire brake device for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210554745U (en) |
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2019
- 2019-07-29 CN CN201921199840.XU patent/CN210554745U/en active Active
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