CN210912383U - Wire-controlled automobile brake controller - Google Patents
Wire-controlled automobile brake controller Download PDFInfo
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- CN210912383U CN210912383U CN201921670674.7U CN201921670674U CN210912383U CN 210912383 U CN210912383 U CN 210912383U CN 201921670674 U CN201921670674 U CN 201921670674U CN 210912383 U CN210912383 U CN 210912383U
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- power supply
- oil inlet
- inlet electromagnetic
- triode
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Abstract
The utility model provides a line control automobile brake controller, include: the brake system comprises a brake system control switch, a first normally closed relay, a power supply, a triode, a brake actuator for respectively braking wheels of the vehicle, and a first brake lamp switch which is connected with a brake pedal phase control and is closed when a driver steps on the brake pedal; the power supply, the brake system control switch and the coil part of the first normally closed relay form an electric loop; the collector of the triode is connected with the positive electrode of the power supply, and the emitter of the triode is connected with the brake actuator; one end of a contact part of the normally closed relay is connected with a base electrode of the triode, the other end of the contact part of the normally closed relay is connected with one end of a first brake lamp switch, and the other end of the first brake lamp switch is connected with the positive electrode of the power supply; when vehicle brake-by-wire system became invalid, the utility model discloses can provide emergent braking function effectively to simple structure, low cost changes less to current vehicle brake-by-wire system.
Description
Technical Field
The utility model relates to a technical field of vehicle braking technique especially relates to a line control automobile brake controller's technical field.
Background
The brake system is one of the important components of the automobile and directly related to the comprehensive performance and life and property safety of the automobile, and comprises a service brake, a parking brake and an auxiliary brake. The service brake is a main brake of the automobile, and generally adopts a drum type or disc type friction braking mode to convert kinetic energy and potential energy of the automobile into heat energy through friction, so that the aim of decelerating or braking the automobile is fulfilled. Although the traditional hydraulic and pneumatic service brake can meet various requirements of the existing brake laws and regulations, the traditional hydraulic and pneumatic service brake has the defects of low response speed, incapability of being actively regulated, difficulty in integrated control and the like, and is not suitable for the development requirements of the current automobile.
The brake-by-wire system comprises an electronic hydraulic brake system (EHB) and an electronic mechanical brake system (EMB), and is composed of a brake pedal module, an electronic control module, a brake actuating mechanism and the like, wherein electric wires are used as information transmission media, and a control unit identifies the brake intention of a driver according to signals of a brake pedal position sensor to control the brake actuating mechanism to act, so that the control on the braking force of wheels is realized. The brake-by-wire system has the characteristics of no need of a vacuum booster, compact structure, superior performance, easy integrated control and the like, makes up for the structural principle deficiency of the traditional brake system, and represents the development trend of the automobile service brake. However, since the brake-by-wire system cancels the direct connection between the brake pedal and the brake actuator, if any one of the electronic control module, the brake pedal module, the brake actuator and the connecting lines therebetween fails, or the power of the vehicle is cut off, the brake-by-wire system will have a dangerous situation of brake failure. Therefore, the emergency braking function has been one of the major problems of the brake-by-wire system.
SUMMERY OF THE UTILITY MODEL
To prior art's defect, the utility model provides a line control automobile brake controller when vehicle line control braking system became invalid, can provide emergent braking function effectively to simple structure, low cost changes less to current vehicle line control braking system.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:
a wire-controlled automotive brake controller, comprising: braking system control switch, first normally closed relay, power supply, triode, the brake executor of braking vehicle wheel respectively and with brake pedal phase control connection and closed first stop lamp switch when the driver steps on brake pedal, wherein:
according to the normal work or the fault of the vehicle brake-by-wire system, the brake system controls the switch to be switched on or off; the power supply, the brake system control switch and the coil part of the first normally closed relay form an electric loop;
the collector of the triode is connected with the anode of the power supply, the emitter of the triode is connected with the brake actuator, and the power supply, the triode and the brake actuator form another electric loop;
one end of a contact part of the normally closed relay is connected with the base electrode of the triode, the other end of the contact part of the normally closed relay is connected with one end of the first brake lamp switch, and the other end of the first brake lamp switch is connected with the anode of the power supply.
The wire-controlled automobile brake controller further comprises a fault indicator light, wherein one end of the fault indicator light is connected with the emitting electrode of the triode, and the other end of the fault indicator light is grounded.
The wire-controlled automobile brake controller is characterized in that the power supply comprises a standby power supply and an automobile power supply, and the standby power supply and the automobile power supply are connected in parallel.
The brake actuator is an oil inlet electromagnetic valve or a driving motor, and the number of the oil inlet electromagnetic valves is four, namely a left front wheel oil inlet electromagnetic valve, a right front wheel oil inlet electromagnetic valve, a left rear wheel oil inlet electromagnetic valve and a right rear wheel oil inlet electromagnetic valve.
The line-controlled automobile brake controller further comprises a power-off emergency brake circuit;
the four brake actuators are respectively a left front wheel oil inlet electromagnetic valve, a right front wheel oil inlet electromagnetic valve, a left rear wheel oil inlet electromagnetic valve and a right rear wheel oil inlet electromagnetic valve;
the power supply is an automobile power supply;
the power-off emergency braking circuit comprises a standby power supply, a resistor R1, a resistor R2, a second normally-closed relay and a second brake lamp switch, wherein the second brake lamp switch is connected with the brake pedal phase control and is closed when a driver steps on a brake pedal;
the standby power supply, the left front wheel oil inlet electromagnetic valve coil and the right front wheel oil inlet electromagnetic valve coil which are connected in parallel, the contact part of the second normally closed relay and the second brake lamp switch are sequentially connected to form a main control electric circuit; the automobile power supply, the resistor R2, the second normally closed relay coil part and the second brake lamp switch are sequentially connected to form a main control loop for controlling the second normally closed relay to be switched on and off; the automobile power supply is connected in series with the resistor R1 and then connected in parallel with the standby power supply.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
the utility model discloses through installing first normally closed relay, when the vehicle drive-by-wire braking system breaks down, can not normally work, realize the emergent braking of car by the action of standby control unit control brake executor; the emergency brake system further adopts the standby power supply, when the automobile power supply is powered off, the standby power supply supplies power to the standby control unit and the brake actuator, so that the emergency brake of the automobile is realized.
Drawings
FIG. 1 is a schematic block diagram of a first embodiment of a wire-controlled vehicle brake controller according to the present invention;
FIG. 2 is a schematic block diagram of a second embodiment of the wire-controlled automotive brake controller of the present invention;
fig. 3 is a schematic block diagram of a power-off emergency braking circuit portion in the second embodiment of the brake-by-wire controller of the present invention.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, which are not intended to limit the present invention.
Example one
Fig. 1 is a schematic block diagram of a first embodiment of the wire-controlled automobile brake controller of the present invention.
As can be seen with reference to fig. 1, the brake-by-wire vehicle brake controller of the present embodiment includes:
braking system control switch, first normally closed relay, power supply, triode, the brake executor of braking vehicle wheel respectively and with brake pedal phase control connection and closed first stop lamp switch when the driver steps on brake pedal, wherein:
according to the normal work or the fault of the vehicle brake-by-wire system, the brake system controls the switch to be switched on or off; the power supply, the brake system control switch and the coil part of the first normally closed relay form an electric loop;
the collector of the triode is connected with the positive electrode of the power supply, the emitter of the triode is connected with the brake actuator, and the power supply, the triode and the brake actuator form another electric loop;
one end of a contact part of the normally closed relay is connected with a base electrode of the triode, the other end of the contact part of the normally closed relay is connected with one end of the first brake lamp switch, and the other end of the first brake lamp switch is connected with the positive electrode of the power supply.
The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
Further, the utility model discloses in the preferred embodiment of drive-by-wire automobile brake controller, still include the fault indicator lamp, the projecting pole of triode is connected to the one end of fault indicator lamp, other end ground connection.
Further, the utility model discloses in the preferred embodiment of drive-by-wire automobile brake controller, the brake executor is oil feed solenoid valve or driving motor to the oil feed solenoid valve is four, is left front wheel oil feed solenoid valve, right front wheel oil feed solenoid valve, left rear wheel oil feed solenoid valve and right rear wheel oil feed solenoid valve respectively.
The working principle of the embodiment is as follows:
when the driver depresses the brake pedal, the first brake light switch is closed. If the vehicle brake-by-wire system works normally, the brake system control switch is closed, the coil part of the first normally-closed relay is electrified, so that the contact part of the first normally-closed relay is disconnected, the base electrode of the triode is low voltage, the collector and the emitter of the triode are not conducted, and the oil inlet electromagnetic valves of the left front wheel, the right front wheel, the left rear wheel and the right rear wheel do not work; if the brake system by wire of the vehicle breaks down, the control switch of the brake system is switched off, the coil part of the first normally closed relay is not electrified, so that the contact part of the first normally closed relay is closed, the base electrode of the triode is high voltage, the collector electrode and the emitter electrode of the triode are conducted, the vehicle power supply supplies power to the oil inlet electromagnetic valves of the left front wheel, the right front wheel, the left rear wheel and the right rear wheel through the triode, the oil inlet pipelines of the brake system are conducted, and high-pressure brake fluid enters the four wheel cylinders, so that emergency braking of the vehicle is realized.
The positive pole of the standby power supply is connected with the positive pole of the automobile power supply, under the normal condition, the automobile power supply charges the standby power supply, the standby power supply is in a fully charged state, and if the automobile is collided to cause the disconnection of the automobile power supply, the standby power supply supplies power. Because the automobile power supply is disconnected, the vehicle line control brake system cannot normally work, and the brake system control switch is disconnected, emergency brake work is started, the standby power supply supplies power to the oil inlet electromagnetic valves of the four wheels through the triodes, the oil inlet pipelines of the brake system are conducted, and high-pressure brake fluid enters the four wheel cylinders, so that the emergency brake of the automobile is realized. Meanwhile, the standby control unit enables the fault indicator lamp to be lightened by supplying power to the fault indicator lamp to remind a driver of paying attention.
Example two
Fig. 2 is a schematic block diagram of a second embodiment of the brake-by-wire vehicle brake controller of the present invention.
Fig. 3 is a schematic block diagram of a power-off emergency braking circuit portion in the second embodiment of the brake-by-wire controller of the present invention.
As can be seen by referring to fig. 2 and 3, the present embodiment differs from the first embodiment in that: the number of the brake actuators is four, and the four brake actuators are respectively a left front wheel oil inlet electromagnetic valve, a right front wheel oil inlet electromagnetic valve, a left rear wheel oil inlet electromagnetic valve and a right rear wheel oil inlet electromagnetic valve. The power supply is an automobile power supply.
The embodiment also comprises a power supply outage emergency braking circuit. The power-off emergency braking circuit comprises a standby power supply, a resistor R1, a resistor R2, a second normally-closed relay and a second brake lamp switch which is connected with the brake pedal phase control and is closed when the driver presses the brake pedal. The standby power supply, the left front wheel oil inlet electromagnetic valve coil and the right front wheel oil inlet electromagnetic valve coil which are connected in parallel, the contact part of the second normally closed relay and the second brake lamp switch are sequentially connected to form a main control electric circuit; the automobile power supply, the resistor R2, the second normally closed relay coil part and the second brake lamp switch are sequentially connected to form a main control loop for controlling the second normally closed relay to be switched on and off; the automobile power supply is connected in series with the resistor R1 and then connected in parallel with the standby power supply.
The working principle of the embodiment is as follows:
when the driver depresses the brake pedal, the first brake light switch is closed. If the vehicle brake-by-wire system works normally, the brake system control switch is closed, the coil part of the first normally-closed relay is electrified, so that the contact part of the first normally-closed relay is disconnected, the base electrode of the triode is low voltage, the collector and the emitter of the triode are not conducted, and the oil inlet electromagnetic valves of the left front wheel, the right front wheel, the left rear wheel and the right rear wheel do not work; if the brake system by wire of the vehicle breaks down, the control switch of the brake system is switched off, the coil part of the first normally closed relay is not electrified, so that the contact part of the first normally closed relay is closed, the base electrode of the triode is high voltage, the collector electrode and the emitter electrode of the triode are conducted, the vehicle power supply supplies power to the oil inlet electromagnetic valves of the left front wheel, the right front wheel, the left rear wheel and the right rear wheel through the triode, the oil inlet pipelines of the brake system are conducted, and high-pressure brake fluid enters the four wheel cylinders, so that emergency braking of the vehicle is realized.
The positive pole of the standby power supply is connected with the positive pole of the automobile power supply, and under the normal condition, the automobile power supply charges the standby power supply which is in a full-charge state. The standby power supply is connected with the two front wheel oil inlet solenoid valve coils through the second normally closed relay and the second stop lamp switch, the two front wheel oil inlet solenoid valve coils are in a parallel connection relation, the automobile power supply, the resistor R2, the second normally closed relay coil part and the second stop lamp switch form a main control circuit of the second normally closed contact relay, the resistor R1 can be 10K omega, and the resistance value of the resistor R2 is determined according to the resistance value of the selected second normally closed relay coil and can be 200 omega.
When the driver does not step on the brake pedal, the second brake lamp switch is turned on, the coil circuit of the oil inlet electromagnetic valves of the two front wheels is disconnected, no current passes through, and the standby power supply circuit does not work; when the second brake lamp switch is closed and the automobile power supply is normal, the automobile power supply is grounded through the resistor R2, the second normally closed relay coil part and the second brake lamp switch, current passes through the second normally closed relay coil part to generate suction force to open the second normally closed relay contact part, the main control electrical loop is disconnected, no current passes through the two front wheel oil inlet electromagnetic valve coils, and the standby power supply circuit does not work; when the second brake lamp switch is closed and the automobile power supply is powered off, no current passes through the coil part of the second normally closed relay, the contact part of the second normally closed relay is closed, the main control electrical loop is in a closed state, the standby power supply supplies power to the two front wheel oil inlet electromagnetic valve coils through the contact part of the second normally closed relay and the second brake lamp switch at the moment, the two front wheel oil inlet pipelines are conducted, and high-pressure brake fluid enters the two front wheel cylinders, so that the emergency braking of the automobile is realized.
The present invention has been described in detail with reference to the specific embodiments, but the present invention is only by way of example and is not limited to the specific embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are intended to be within the scope of the present invention. Accordingly, variations and modifications in equivalents may be made without departing from the spirit and scope of the invention, which is intended to be covered by the following claims.
Claims (5)
1. A brake-by-wire automotive brake controller, comprising: braking system control switch, first normally closed relay, power supply, triode, the brake executor of braking vehicle wheel respectively and with brake pedal phase control connection and closed first stop lamp switch when the driver steps on brake pedal, wherein:
according to the normal work or the fault of the vehicle brake-by-wire system, the brake system controls the switch to be switched on or off; the power supply, the brake system control switch and the coil part of the first normally closed relay form an electric loop;
the collector of the triode is connected with the anode of the power supply, the emitter of the triode is connected with the brake actuator, and the power supply, the triode and the brake actuator form another electric loop;
one end of a contact part of the normally closed relay is connected with the base electrode of the triode, the other end of the contact part of the normally closed relay is connected with one end of the first brake lamp switch, and the other end of the first brake lamp switch is connected with the anode of the power supply.
2. The brake-by-wire controller of claim 1, further comprising a fault indicator light, wherein one end of the fault indicator light is connected to the emitter of the triode, and the other end of the fault indicator light is grounded.
3. A line controlled vehicle brake controller according to claim 1 or claim 2, wherein the power supply comprises a backup power supply and a vehicle power supply, and the backup power supply and the vehicle power supply are connected in parallel.
4. The line-controlled automobile brake controller according to claim 1 or 2, wherein the brake actuators are oil inlet electromagnetic valves or driving motors, and the number of the oil inlet electromagnetic valves is four, and the four oil inlet electromagnetic valves are respectively a left front wheel oil inlet electromagnetic valve, a right front wheel oil inlet electromagnetic valve, a left rear wheel oil inlet electromagnetic valve and a right rear wheel oil inlet electromagnetic valve.
5. A line controlled vehicle brake controller according to claim 1 or 2, further comprising a power-off emergency brake circuit;
the four brake actuators are respectively a left front wheel oil inlet electromagnetic valve, a right front wheel oil inlet electromagnetic valve, a left rear wheel oil inlet electromagnetic valve and a right rear wheel oil inlet electromagnetic valve;
the power supply is an automobile power supply;
the power-off emergency braking circuit comprises a standby power supply, a resistor R1, a resistor R2, a second normally-closed relay and a second brake lamp switch, wherein the second brake lamp switch is connected with the brake pedal phase control and is closed when a driver steps on a brake pedal;
the standby power supply, the left front wheel oil inlet electromagnetic valve coil and the right front wheel oil inlet electromagnetic valve coil which are connected in parallel, the contact part of the second normally closed relay and the second brake lamp switch are sequentially connected to form a main control electric circuit; the automobile power supply, the resistor R2, the second normally closed relay coil part and the second brake lamp switch are sequentially connected to form a main control loop for controlling the second normally closed relay to be switched on and off; the automobile power supply is connected in series with the resistor R1 and then connected in parallel with the standby power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921670674.7U CN210912383U (en) | 2019-10-08 | 2019-10-08 | Wire-controlled automobile brake controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921670674.7U CN210912383U (en) | 2019-10-08 | 2019-10-08 | Wire-controlled automobile brake controller |
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| CN210912383U true CN210912383U (en) | 2020-07-03 |
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| CN201921670674.7U Active CN210912383U (en) | 2019-10-08 | 2019-10-08 | Wire-controlled automobile brake controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758066A (en) * | 2020-12-30 | 2021-05-07 | 东风汽车有限公司 | Automobile brake control system, control method and overall electronic control unit |
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- 2019-10-08 CN CN201921670674.7U patent/CN210912383U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112758066A (en) * | 2020-12-30 | 2021-05-07 | 东风汽车有限公司 | Automobile brake control system, control method and overall electronic control unit |
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