CN114834416A - Control method for vehicle brake caliper introducing energy accumulator - Google Patents
Control method for vehicle brake caliper introducing energy accumulator Download PDFInfo
- Publication number
- CN114834416A CN114834416A CN202210444279.7A CN202210444279A CN114834416A CN 114834416 A CN114834416 A CN 114834416A CN 202210444279 A CN202210444279 A CN 202210444279A CN 114834416 A CN114834416 A CN 114834416A
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- CN
- China
- Prior art keywords
- motor
- energy accumulator
- power supply
- accumulator
- brake caliper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000004146 energy storage Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
Images
Classifications
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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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
- B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/84—Driver circuits for actuating motor, valve and the like
Abstract
The invention provides a control method of vehicle brake calipers with an energy accumulator, which drives the brake calipers through a motor, and when the motor is in an off state, starting the motor to shut down the motor comprises the following steps: step 1, confirming whether an energy accumulator is in a usable state; step 2, controlling the relay to switch the energy accumulator into a motor power supply circuit; step 3, opening a switch tube of the motor control loop to control the motor; step 4, when the energy accumulator needs to be cut out of a motor power supply circuit, a switch tube in a motor control loop is closed first, and then the energy accumulator is cut out; and 5, when the motor is turned off through the switching tube, the positive end and the negative end of the motor are in short circuit, so that the motor can be quickly stopped after the power supply is cut off. On the premise of comprehensively considering the cost performance of an actual system, the safe switching-in and switching-out of a power supply circuit of the energy accumulator is ensured, the response speed of the motor is improved, and the accurate control of the motor in the stopping process is ensured.
Description
Technical Field
The invention relates to the field of motor vehicles, in particular to a control method for a vehicle brake caliper with an accumulator.
Background
In modern vehicle chassis brakes, various mechanical calipers based on motor drive, such as an electronic parking system EPB, an electronic hydraulic caliper EHC, an electromechanical brake EMB, and the like. These electronic control systems are generally composed of sensors, an electronic control unit ECU, and actuators. The electronic control unit ECU is responsible for sending a control instruction to the actuator to realize stable, quick and accurate control of the system; the actuator is an execution unit which is composed of a motor as a power source.
In the evaluation of the response performance of the brake, the response time of the system is an important index of the system. The brake actuator based on motor driving is difficult to install a motor with larger power at the wheel end in practical vehicle application due to multiple factors such as cost, installation position and the like; therefore, in the case of determining the rated power and the volume of the motor, how to promote the quick response of the motor is an important issue. Since the vehicle-mounted storage battery is a standard storage battery of 12V, the instantaneous power upper limit of the motor actuator is limited to a certain extent by adding the voltage division of the wire harness resistance.
In recent years, thanks to the improvement of the cost performance of energy storage products, under the condition of determining the voltage of a vehicle power supply system, the energy storage (such as a super capacitor) is introduced to increase the power supply voltage of a motor so as to increase the response speed of an actuator, and the method is a new direction of research in the industry. Considering the comprehensive cost performance and circuit control requirements, when the circuit is realized, the circuit switching-in and switching-out of the energy accumulator are generally realized through a relay, and the switching control of the motor is realized through a switching tube; in actual system development, multiple factors such as characteristics of a switching device, rotational inertia of a motor, induced back electromotive force and the like need to be considered, otherwise, problems such as reduction or damage of service life of devices in a control loop, reduction of precision of motor stop control precision and the like can be caused, and therefore, how to realize safe switching of an energy accumulator and quick response of the motor needs to be solved urgently.
Disclosure of Invention
The invention aims to provide a control method of a vehicle brake caliper with an energy accumulator, which realizes safe work of a circuit and an electronic device, ensures the service life, improves the control precision and solves the problem that the service life of the circuit device is reduced or damaged easily in the background technology by switching the energy accumulator and controlling a motor according to a specific sequence.
The invention provides a control method of vehicle brake calipers with an energy accumulator, which drives the brake calipers through a motor, and when the motor is in an off state, starting the motor to shut down the motor comprises the following steps: step 1, confirming whether an energy accumulator is in a usable state; step 2, controlling the relay to switch the energy accumulator into a motor power supply circuit; step 3, opening a switch tube of the motor control loop to control the motor; step 4, when the energy accumulator needs to be cut out of a motor power supply circuit, a switch tube in a motor control loop is closed first, and then the energy accumulator is cut out; and 5, when the motor needs to be turned off, turning off the motor through the switching tube.
The further improvement lies in that: the motor control loop comprises a motor and a switch tube, and the motor is connected with the switch tube through a wire harness.
The further improvement lies in that: the motor power supply circuit comprises a vehicle-mounted storage battery, a relay and an energy accumulator; the vehicle-mounted storage battery, the relay and the energy accumulator are connected through a wire harness; the energy accumulator is a battery or a capacitor.
The further improvement lies in that: and 2, adding a motor power supply circuit into the energy accumulator in a series connection mode, and supplying power to at least one path of motor by the energy accumulator.
The further improvement lies in that: in step 5, when the motor is turned off through the switching tube, the switching tube is turned off first, and then the positive end and the negative end of the motor are directly in short circuit or are connected with a resistor in short circuit.
The invention has the beneficial effects that: 1. the energy accumulator is introduced into the motor control, and the energy accumulator is switched and the motor is controlled according to a specific sequence, so that the safe work of a circuit and an electronic device is realized, the service life of equipment is ensured, and the control accuracy is improved; if a switch-on light pipe in a motor control loop is in an open state before switching an energy accumulator in a power supply circuit, at the moment of switching in or switching out the energy accumulator, sparks are generated at a contact of a relay due to overcurrent at the moment of starting the motor or induced back electromotive force when the motor stops, so that the service life of the relay is reduced or damaged; this application is through before cutting into or cutting out the energy storage ware, affirms the energy storage ware user state to switch on and off the motor, thereby guarantee that supply circuit is more stable, improve equipment's life.
2. When the motor is turned off through the switching tube, the switching tube is turned off firstly, and then the motor is in short circuit with the positive end and the negative end of the motor directly or through the connecting resistor, so that the energy of the motor which is not completely stopped is released, the stopping time of the motor is shortened, the motor can be quickly stopped after the power supply is cut off, the control precision of the motor is effectively improved, and the stopping time of the motor is accurately controlled.
3. According to the invention, the energy accumulator is connected in series into the motor power supply loop to increase the power supply voltage of the motor, so that the response speed of the motor is increased, the energy accumulator supplies power to one or more paths of motors, the cost of the whole electric control unit is effectively reduced, and the use cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic flow diagram of the present invention.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1, the present invention provides a method for controlling a vehicle brake caliper with an energy accumulator, comprising a motor control circuit and a motor power supply circuit, wherein the motor power supply circuit is connected with the motor control circuit through a wire harness, and the motor power supply circuit supplies power to the motor control circuit; the motor control loop comprises a first motor, a first switch tube, a second motor and a second switch tube, the first motor and the first switch tube and the second motor and the second switch tube are connected in a wiring harness control mode, the first motor is controlled by the first switch tube, and the second motor is controlled by the second switch tube. The motor power supply loop comprises a vehicle-mounted storage battery, a relay and an energy accumulator; the vehicle-mounted storage battery, the relay and the energy accumulator are connected through a wire harness; the energy accumulator adopts a capacitor.
The motor drives the brake calipers, and when the motor is in an off state, the processor starts the motor to close the motor after receiving a brake instruction.
As shown in fig. 2, the method comprises the following steps:
step 1, whether the energy accumulator is in a usable state is confirmed. If the energy accumulator is in an available state, adding the energy accumulator into a motor power supply circuit; when the energy accumulator can not be used, the energy accumulator is not added into the motor power supply circuit.
And 2, controlling the relay to cut the energy accumulator into a motor power supply circuit in a series connection mode, wherein the energy accumulator supplies power for the multi-path motor.
And 3, opening a first switch tube and a second switch tube of the motor control loop, performing motor control on the first motor and the second motor, and respectively controlling the corresponding brake calipers through the first motor and the second motor.
And 4, when the energy accumulator needs to be cut out of the motor power supply circuit, the first switch tube and the second switch tube in the motor control loop are turned off, and then the energy accumulator is cut out.
And 5, when the motor is turned off through the switching tube, the positive end and the negative end of the respective motor of the first motor and the second motor are in short circuit while the first switching tube and the second switching tube are turned off, so that the motor can be quickly stopped after the power supply is cut off.
On the premise of comprehensively considering the cost performance of an actual system, the energy accumulator is introduced into the motor control, the energy accumulator is switched and the motor is controlled according to a specific sequence, so that the safe work of a circuit and an electronic device is realized, the working life is ensured, the control precision is ensured, a power supply circuit is switched in and out safely, the response speed of the motor is improved, and the precise control when the motor stops is ensured.
Claims (6)
1. A method of controlling a vehicle brake caliper incorporating an accumulator, characterized by: through motor drive brake caliper, start-up motor to close the motor includes the following steps: step 1, confirming whether an energy accumulator is in a usable state; step 2, controlling the relay to switch the energy accumulator into a motor power supply circuit; step 3, opening a switch tube of the motor control loop to control the motor; step 4, when the energy accumulator needs to be cut out of a motor power supply circuit, a switch tube in a motor control loop is closed first, and then the energy accumulator is cut out; and 5, turning off the motor through the switching tube.
2. A method of controlling a vehicle brake caliper incorporating an accumulator, as claimed in claim 1, wherein: the motor control loop comprises a motor and a switch tube.
3. A method of controlling a vehicle brake caliper incorporating an accumulator, as claimed in claim 1, wherein: the motor power supply circuit comprises a vehicle-mounted storage battery, a relay and an energy accumulator; the energy accumulator is a battery or a capacitor.
4. A method of controlling a vehicle brake caliper incorporating an accumulator, as claimed in claim 1, wherein: in the step 2, the energy accumulator is added into a motor power supply circuit in a series connection mode, and the energy accumulator supplies power for at least one path of motor.
5. A method of controlling a vehicle brake caliper incorporating an accumulator, as claimed in claim 1, wherein: in the step 5, when the motor is turned off through the switch tube, the switch tube is turned off first, and then the motor is short-circuited.
6. A method of controlling a vehicle brake caliper incorporating an accumulator as claimed in claim 5, wherein: when the motor is in short circuit, the positive end and the negative end of the motor are directly in short circuit or are in short circuit by connecting resistors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444279.7A CN114834416A (en) | 2022-04-24 | 2022-04-24 | Control method for vehicle brake caliper introducing energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210444279.7A CN114834416A (en) | 2022-04-24 | 2022-04-24 | Control method for vehicle brake caliper introducing energy accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114834416A true CN114834416A (en) | 2022-08-02 |
Family
ID=82565487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210444279.7A Pending CN114834416A (en) | 2022-04-24 | 2022-04-24 | Control method for vehicle brake caliper introducing energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114834416A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433137A (en) * | 2002-04-08 | 2003-07-30 | 姚湘江 | Fast DC motor braking method, fast braking motor and brake system |
| JP2010110192A (en) * | 2008-09-30 | 2010-05-13 | Panasonic Corp | Vehicle power supply unit |
| JP2010120624A (en) * | 2008-10-23 | 2010-06-03 | Nissan Motor Co Ltd | Device and method of controlling vehicle power supply |
| CN202076975U (en) * | 2011-06-03 | 2011-12-14 | 宁波杜亚机电技术有限公司 | Direct-current (DC) motor power interruption braking device |
| CN108473116A (en) * | 2016-05-26 | 2018-08-31 | 日立汽车系统株式会社 | Brake apparatus and vehicle |
| CN114194126A (en) * | 2020-09-18 | 2022-03-18 | 芜湖伯特利汽车安全系统股份有限公司 | Method and device for improving performance of electric control system of vehicle chassis |
-
2022
- 2022-04-24 CN CN202210444279.7A patent/CN114834416A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1433137A (en) * | 2002-04-08 | 2003-07-30 | 姚湘江 | Fast DC motor braking method, fast braking motor and brake system |
| JP2010110192A (en) * | 2008-09-30 | 2010-05-13 | Panasonic Corp | Vehicle power supply unit |
| JP2010120624A (en) * | 2008-10-23 | 2010-06-03 | Nissan Motor Co Ltd | Device and method of controlling vehicle power supply |
| CN202076975U (en) * | 2011-06-03 | 2011-12-14 | 宁波杜亚机电技术有限公司 | Direct-current (DC) motor power interruption braking device |
| CN108473116A (en) * | 2016-05-26 | 2018-08-31 | 日立汽车系统株式会社 | Brake apparatus and vehicle |
| CN114194126A (en) * | 2020-09-18 | 2022-03-18 | 芜湖伯特利汽车安全系统股份有限公司 | Method and device for improving performance of electric control system of vehicle chassis |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20220802 |