WO2019187805A1 - ブレーキ装置及び電動ブレーキ装置、並びにモータ制御装置 - Google Patents
ブレーキ装置及び電動ブレーキ装置、並びにモータ制御装置 Download PDFInfo
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- WO2019187805A1 WO2019187805A1 PCT/JP2019/006207 JP2019006207W WO2019187805A1 WO 2019187805 A1 WO2019187805 A1 WO 2019187805A1 JP 2019006207 W JP2019006207 W JP 2019006207W WO 2019187805 A1 WO2019187805 A1 WO 2019187805A1
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- Prior art keywords
- power storage
- storage device
- electric
- electric motor
- brake
- Prior art date
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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
-
- 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
-
- 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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/10—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
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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
- B60T13/745—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 a hydraulic system, e.g. a master cylinder
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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
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- 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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
- F16D55/225—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads
- F16D55/226—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D61/00—Brakes with means for making the energy absorbed available for use
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
- F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
- F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
-
- 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
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
-
- 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
- B60T13/746—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 and mechanical transmission of the braking action
-
- 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
- B60T2270/40—Failsafe aspects of brake control systems
- B60T2270/414—Power supply failure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Definitions
- the present invention relates to a brake device that generates a braking force by an electric motor, an electric brake device, and a motor control device.
- Patent Document 1 includes a caliper that includes a piston, a motor, and a ball ramp mechanism that converts the rotation of the motor into a linear motion and transmits the linear motion to the piston. Accordingly, there is disclosed an electric brake device that operates the ball ramp mechanism to propel the piston and presses a brake pad against a disc rotor to generate a braking force.
- An object of the present invention is to provide a brake device, an electric brake device, and a motor control device capable of speeding up the response while preventing or suppressing an increase in power supply current.
- One embodiment of the present invention includes an electric motor that is driven by being supplied with electric power from a first power storage device, and a second power storage device that can store a higher voltage than the first power storage device, and has a predetermined rotational speed.
- the electric motor is required to be driven at a higher rotational speed, power is supplied from the second power storage device to the electric motor.
- the response of the brake device can be speeded up while preventing or suppressing an increase in power supply current.
- FIG. 2 is a diagram illustrating an example of switching timing between a first power storage device and a second power storage device in the electric brake device of FIG. 1, and (a) illustrates each of the first power storage device and the second power storage device.
- a graph showing the change over time of the power supply voltage (b) is a graph showing the change over time of the power supply voltage output from the main control unit to the motor drive unit of the caliper side control unit.
- FIG. 1 is a block diagram showing a main part of an electric brake device 1 as a first embodiment of the present invention.
- FIG. 2 is a block diagram showing a main part of the motor control device 20 of the electric brake device of FIG.
- the electric brake device 1 is a braking device that applies a braking force to each wheel by sandwiching a disk D that rotates with each wheel (not shown) of the vehicle.
- this electric brake device 1 includes a brake mechanism 10 including brake pads 2 and 3 pressed against a disk D and a piston 4 that moves the brake pads 2 and 3. 1 for each wheel to be braked.
- the brake mechanism 10 further includes an electric motor 11 and a rotation-linear motion conversion mechanism 12 that converts the rotation of the electric motor 11 into a linear motion and transmits the linear motion to the piston 4.
- the electric brake device 1 includes the brake mechanism 10 for each wheel to be braked by the electric brake device 1, and typically, a plurality of (for example, in the case of a four-wheel vehicle, all There is a brake mechanism 10 (for four wheels).
- the electric brake device 1 will be described mainly in relation to one brake mechanism 10 and its components. At this time, the matters described in relation to one brake mechanism 10 are the same for other arbitrary brake mechanisms unless otherwise specified.
- the electric brake device 1 further includes a motor control device 20 that controls the operation of the electric motor 11, and first and second power storage devices 27 and 28 that supply electric power to the electric motor 11 via the motor control device 20.
- the second power storage device 28 is capable of storing a voltage higher than the voltage of the first power storage device 27.
- the motor control device 20 is configured to switch the first power storage device 27 and the second power storage device 28 to supply power to the electric motor 11.
- the first power storage device 27 is composed of a power storage device (for example, a lead acid battery) serving as a vehicle power source
- the second power storage device 28 is composed of an electric double layer capacitor (EDLC).
- the voltage of the first power storage device 27 is, for example, a voltage within a range of 12V to 14V
- the second power storage device 28 can be stored such that the voltage is within a range of 24V to 30V, for example. It is a thing.
- the electric motor 11 and the rotation-linear motion conversion mechanism 12 are shown outside the caliper 5 as separate blocks from the caliper 5.
- the conversion mechanism 12 is merely schematically shown as a functional block, and the spatial arrangement configuration of these components 11 and 12 is not limited at all.
- the electric motor 11 and the rotation-linear motion conversion mechanism 12 are disposed in the caliper 5 together with the piston 4.
- the brake mechanism 10 according to the present embodiment sandwiches a disk D that rotates together with the wheels, thereby functioning as a braking device that applies a braking force to each wheel (for example, an electric component) It may include a deceleration mechanism that decelerates the rotation of the motor 11.
- the motor control device 20 included in the electric brake device 1 includes a main control unit 21 and a caliper side control unit 41, and the main control unit 21 includes first and second input side switching circuits 22. , 23, first and second output side switching circuits 24, 25, and a controller 26.
- the caliper side control unit 41 includes a motor drive unit 42 and a controller 36.
- controller 26 and / or the controller 36 are connected to a vehicle data bus (not shown), and will be described later with each other and / or another electronic control unit (ECU) by communication via the vehicle data bus.
- vehicle data bus not shown
- ECU electronice control unit
- Various types of information including information necessary for controlling the motor drive unit 42 may be exchanged.
- the first and second input side switching circuits 22 and 23 are at least in a conductive state (hereinafter referred to as an on state or simply on) and a non-conductive state (hereinafter also referred to as an off state or simply off). These two states are switched by control signals 32 and 33 from the controller 26, respectively.
- the first power storage device 27 is connected to the power supply line 29 of the main control unit 21 via the first input side switching circuit 22, and the second power storage device 28 is connected via the second input switching circuit 23. It is connected to a power supply line 29 in the main control unit 21. Therefore, when the first input side switching circuit 22 is turned on and the second input side switching circuit 23 is turned off by the control signals 32 and 33 from the controller 26, the first power storage device is connected to the power line 29. The voltage from 27 is input. When the first input side switching circuit 22 is turned off and the second input side switching circuit 23 is turned on by the control signals 32 and 33 from the controller, the second power storage device 28 is connected to the power line 29. The voltage from is input.
- the power supply line 30 that outputs the power supply voltage from the main control unit 21 to the caliper side control unit 41 is connected to the power supply line 29 in the main control unit 21.
- the motor control device 20 has a further caliper control unit similar to the caliper side control unit 41, and a power supply line 25 that outputs a power supply voltage to the caliper side control unit. Are connected to a power supply line 29 in the main control unit 21.
- One of the rear wheel brake mechanisms 10 is a control unit, and the above-described further caliper control unit is a control unit for the other rear wheel brake mechanism 10.
- the motor control device 20 is connected to the main control unit 21 via the respective output side switching circuits, and is similar to the caliper control unit 41.
- a control unit may be provided according to each brake mechanism 10.
- the present invention is not limited by the specific configuration of the first and second input-side switching circuits 22 and 23, but the switching circuits 22 and 23 are preferably semiconductor switching elements (for example, , MOS-FET).
- MOS-FET semiconductor switching elements
- the control signals 32 and 33 correspond to gate drive voltages for controlling on / off of the corresponding MOS-FET, respectively.
- controller 26 and the controller 36 preferably include a well-known micro-processor including a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an I / O (Input / Output) interface, and the like. Configured as a computer system. However, a part or all of the controller 26 and / or the controller 36 is configured by any appropriate hardware or software, or a combination thereof as long as the drive control of the motor whose details will be described later can be executed. It may be a thing.
- CPU Central Processing Unit
- ROM Read Only Memory
- RAM Random Access Memory
- I / O Input / Output
- the electric motor 11 is composed of, for example, a three-phase synchronous motor.
- the motor drive unit 42 of the caliper side control unit 41 converts the DC power supplied via the power line 30 into three-phase AC power and outputs it to the electric motor 11 from the three-phase inverter device. Composed.
- the controller 36 outputs a switch control signal 37 for controlling on / off of semiconductor switch elements (not shown) constituting the three-phase inverter device to the motor drive unit 42, and the motor drive unit 42 37, the electric motor 11 is driven.
- the controller 26 of the main control unit 21 corresponds to a command signal corresponding to a target value of an operation parameter of the electric motor 11 such as the number of rotations of the electric motor 11, and the controller 36 receives the command signal 31. Accordingly, the motor drive unit 42 is controlled.
- the motor drive unit 42 may be directly switch-controlled by the controller 26 of the main control unit 21.
- the voltage of the first power storage device 27 is a voltage within the range of 12V to 14V
- the second power storage device 28 is stored so that the voltage is a voltage within the range of 24V to 30V. It shall be.
- the controller 26 turns on the first input side switching circuit 22 and turns off the second input side switching circuit 23 by the control signals 32 and 33.
- the voltage of the first power storage device 27 is supplied to the power supply line 29.
- the controller 26 of the main control unit 21 outputs a command signal 31 corresponding to a predetermined rotational speed to the controller 36 of the caliper side control unit 41, and the controller 36 operates the motor drive unit 42 according to the command signal 31.
- the electric motor 11 rotates at the predetermined rotational speed. Then, the rotation of the electric motor 11 driven by receiving power supply from the first power storage device 27 is converted into a linear motion by the rotation-linear motion conversion mechanism 12 of the brake mechanism 10, and thrust is applied to the piston 4 by this linear motion.
- the brake pads 2 and 3 that are transmitted and moved by the piston 4 press the disc D to generate a braking force.
- the second power storage device 28 first functions as a backup power source in case the power supply voltage decreases due to a failure or the like in the first power storage device 27. .
- the controller 26 turns off the first input side switching circuit 22 with the control signals 32 and 33, and 2 input side switching circuit 23 is turned on.
- the voltage of the second power storage device 28 is supplied to the power supply line 29.
- the voltage of the second power storage device 28 is output from the main control unit 21 to the motor drive unit 42 of the caliper side control unit 41 through the power line 30.
- the controller 26 of the main control unit 21 outputs a command signal 31 corresponding to a predetermined rotational speed to the controller 36 of the caliper side control unit 41, and the controller 36 outputs the voltage of the second power storage device 28 and the command signal 31.
- the motor drive unit 42 is operated, whereby the electric motor 11 rotates at a predetermined rotational speed.
- the rotation of the electric motor 11 driven by receiving power supply from the second power storage device 28 generates a braking force by the operation of the brake mechanism 10 as described above.
- the electric brake device 1 supplies electric power from the second power storage device 28 to the electric motor 11 when the electric motor 11 is required to be driven at a higher rotational speed than the predetermined rotational speed. That is, when the electric motor 11 is required to drive at a higher rotational speed than the predetermined rotational speed, the controller 26 turns off the first input side switching circuit 22 by the control signals 32 and 33 and The input side switching circuit 23 is turned on. As a result, the voltage of the second power storage device 28 is supplied to the power supply line 29. In this state, the voltage of the second power storage device 28 is output from the main control unit 21 to the motor drive unit 42 of the caliper side control unit 41 through the power supply line 30.
- the controller 26 of the main control unit 21 outputs a command signal 31 corresponding to a required number of revolutions higher than a predetermined number of revolutions to the dedicated controller 36 of the caliper side control unit 41, and the controller 36
- the motor drive unit 42 is operated in accordance with the voltage of the power storage device 28 and the command signal 31, whereby the electric motor 11 rotates at a required rotation speed higher than a predetermined rotation speed.
- the rotation of the electric motor 11 driven by receiving power supply from the second power storage device 28 generates a braking force by the operation of the brake mechanism 10 as described above.
- the emergency brake may be, for example, an automatic emergency brake (AEB) that detects an obstacle using a radar, a camera, an infrared laser, or the like and automatically performs brake control when approaching the obstacle. Further, the emergency brake may include a case where the urgency is determined based on the operation amount and / or pedal speed of the brake pedal of the driver of the vehicle. Further, when the electric motor 11 is required to drive at a rotational speed higher than a predetermined rotational speed, the electric motor after the piston 4 is moved backward from the brake pad 2 for reasons such as replacement of the brake pads 2 and 3, for example. The time when the piston 4 is propelled to the disk D side from the position farthest from the disk D, such as when the brake device 1 is started, may be included.
- AEB automatic emergency brake
- FIG. 3 shows an example of the switching timing between the first power storage device 27 and the second power storage device 28.
- FIG. 3A is a graph showing changes over time in the voltage 52 of the first power storage device 27 and the voltage 51 of the second power storage device 28, and
- FIG. 3B is a graph showing the caliper side from the main control unit 21 by the power line 30.
- 5 is a graph showing a change with time of a power supply voltage (in other words, a motor drive voltage) output to a motor drive unit of the control unit 41.
- the period indicated by the symbol A is a period corresponding to the normal operation of the electric brake device 1 or the non-operation of the electric brake device 1
- the period indicated by the symbol B is This is the period corresponding to emergency braking.
- the voltage 52 of the first power storage device 27 is constant over the entire period (in the example shown, about 13.5 V).
- the initial period A (0 to 1 second)
- the first input side switching circuit 22 is in the on state and the second input side switching circuit 23 is in the off state, as shown in FIG.
- the motor drive voltage 53 becomes the voltage 52 of the first power storage device 27.
- the voltage 51 of the second power storage device 28 is also constant (28 V in the illustrated example).
- the first input side switching circuit 22 is turned off and the second input side switching circuit 23 is turned on.
- the power source that supplies power to the electric motor 11 is switched to the second power storage device 28, and the motor drive voltage 53 becomes the voltage 51 of the second power storage device 28 as shown in FIG. .
- the second power storage device 28 is composed of an electric double layer capacitor (EDLC), as shown in FIG. 3 (a), as the period B continues, the voltage 51 (and hence the motor drive voltage) is discharged. 53) decreases.
- the voltage 51 of the second power storage device 28 is 24V.
- the first input side switching circuit 22 is turned on again, the second input side switching circuit 23 is turned off again, and the power source for supplying power to the electric motor 11 is the first.
- the power storage device 27 is switched to. Therefore, as shown in FIG. 3B, the motor drive voltage 53 becomes the voltage 52 of the first power storage device 27.
- the second power storage device 28 is charged at the start of this period A, and the voltage at the time after the elapse of the predetermined period (in the illustrated example, about 2 seconds) (In the example shown, 28 V). Thereafter, switching between the first power storage device 27 and the second power storage device 28 according to the period A and the period B is repeated.
- the electric motor is driven by a single power supply voltage of 12 V. Therefore, in order to increase the rotation speed of the electric motor and thereby speed up the response of the brake device. It was necessary to increase the power supply current of the power supply for driving the motor. When this current increases, the copper loss increases, and in order to reduce the copper loss, it is necessary to increase the size of the electric motor and / or the inverter device that drives the electric motor, so that the component cost also increases.
- the electric motor 11 driven by receiving power supply from the first power storage device 27 and the first power storage A second power storage device 28 capable of storing a higher voltage than the device 27, and when the electric motor 11 is required to drive at a rotational speed higher than a predetermined rotational speed, the second power storage device 28 to the electric motor Therefore, the electric motor 11 can be driven at a high rotational speed while preventing or suppressing an increase in power supply current and without causing voltage saturation due to the induced voltage of the electric motor 11. As a result, the response of the electric brake device 1 can be speeded up as necessary.
- Such a high-speed response of the brake device (electric brake device 1) of the present invention is particularly desirable in order to achieve reliable collision avoidance during emergency braking.
- the second power storage device 28 is an electric motor when the voltage of the first power storage device 27 is a predetermined value or less.
- the power storage device that functions as a backup power source for the failure of the first power storage device 27 maintains the same function as the conventional one.
- it is used as the second power storage device 28 of the present invention. Therefore, also from this point of view, the present invention makes it possible to speed up the response of the electric brake device 1 described above without increasing the parts cost from the conventional brake device.
- the conventional backup power supply is basically prepared for an event that occurs rarely, such as the failure of the first power storage device 27, the present invention provides a viewpoint of effective use of components. Is also desirable.
- the second power storage device 28 is composed of an electric double layer capacitor (EDLC), and does not involve a chemical reaction in charge and discharge, and therefore has durability. It is possible to configure the second power storage device 28 that is superior to the above.
- EDLC electric double layer capacitor
- the motor control device 20 drives the electric motor 11 with a closed circuit separated from external factors, and thus is equivalent to the conventional one.
- the motor drive unit 42 is a motor drive unit (specifically, a conventional brake device). In this case, it is only necessary to have a withstand voltage performance (for example, 40 V) equivalent to that of the inverter device. Even in view of this point, the electric brake device 1 and the motor control device 20 according to the present embodiment speed up the response of the electric brake device 1 described above without increasing the parts cost from the conventional brake device and the motor control device. Is possible.
- the first and second input side switching circuits 22 and 23 are also provided in a conventional motor control device including a power storage device that functions only as a backup power source. It is provided.
- the switching circuits 22 and 23 (preferably, semiconductor switch elements) need only have a withstand voltage performance equivalent to the corresponding components used in the conventional motor control device. This is the same as the unit 42. Therefore, the motor control device 20 in the present embodiment is simply changed by the first and second input side switching circuits 22 by the controller 26 without changing the hardware configuration from the conventional motor control device and thus increasing the component cost. , 23 can be realized by changing the control sequence.
- the high-speed response of the electric brake device 1 is particularly desirable in order to quickly generate a braking force even when the piston 4 is propelled from the position farthest from the disk D toward the disk D. Is.
- a brake device 60 according to a second embodiment of the present invention will be described with reference mainly to FIG. 4 mainly focusing on differences from the first embodiment.
- corresponds with 1st Embodiment, it represents with the same name and the same code
- the brake device 60 is a hydraulic brake device that applies a braking force to each wheel by sandwiching a disk D that rotates with each wheel (not shown) of the vehicle.
- the brake device 60 includes a brake pad 2 and 3 that is pressed against the disk D and a piston 4 that is slidably provided on the inner periphery of the cylinder 66 of the caliper 5 and moves the brake pad 2 and 3. 61 is provided for each wheel to be braked by the brake device 60.
- the brake device 60 further includes a master cylinder 67 that generates hydraulic pressure to be supplied into the cylinder 66 of the caliper 5, and an electric booster 70 that transmits the master cylinder 67.
- the electric booster 70 drives a booster piston (not shown) that can adjust the hydraulic pressure in the master cylinder 67, and converts the rotation of the electric motor 11 into linear motion and transmits it to the booster piston.
- a rotation-linear motion conversion mechanism 72 a rotation-linear motion conversion mechanism 72.
- the electric booster 70 is configured to perform regenerative cooperative control by an electric motor 11 that is driven and controlled by a motor control device 20 described later, regardless of the depression of a brake pedal (not shown) or regardless of the operation of the brake pedal.
- Various brake controls such as brake assist and automatic brake can be executed.
- the brake device 60 further includes a motor control device 20 that controls the operation of the electric motor 11, and first and second power storage devices 27 and 28 that supply electric power to the electric motor 11 via the motor control device 20. ing.
- the brake device 60 generates hydraulic pressure in the master cylinder 67 by the electric motor 11 driven under the drive control by the motor control device 20, and consequently generates braking force in the brake mechanism 61 of each wheel. Configured.
- the electric motor 11 of the brake device 60 and the first and second power storage devices 27 and 28 are the same as the corresponding components of the electric brake device 1 in the first embodiment.
- the motor control device 20 has the same function as the motor control device 20 of the electric brake device 1 in the first embodiment with respect to switching between the first power storage device 27 and the second power storage device 28 and driving of the electric motor 11. To fulfill.
- the brake device 60 and the motor control device 20 have the same operational effects as those described above in relation to the electric brake device 1 and the motor control device of the first embodiment.
- this invention is not limited to above-described embodiment, Various modifications are included.
- the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described.
- a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
- Braking Systems And Boosters (AREA)
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Abstract
Description
図1は、本発明の第1実施形態としての電動ブレーキ装置1の主要部を示すブロック図である。図2は、図1の電動ブレーキ装置の、モータ制御装置20の主要部を示すブロック図である。電動ブレーキ装置1は、車両の各車輪(図示は省略する)と共に回転するディスクDを挟持することにより、車輪毎に制動力を付与する制動装置である。この電動ブレーキ装置1は、図1に示されるように、ディスクDに押圧されるブレーキパッド2、3と、ブレーキパッド2、3を移動させるピストン4とを含むブレーキ機構10を、この電動ブレーキ装置1の制動対象となる車輪毎に備えている。ブレーキ機構10は、さらに、電動モータ11と、電動モータ11の回転を直線運動に変換してピストン4に伝達する回転-直動変換機構12とを含んでいる。
以後、期間A及び期間Bに応じた第1の蓄電装置27と第2の蓄電装置28の間の切り替えが繰り返される。
Claims (6)
- ブレーキ装置であって、該ブレーキ装置は、
第1の蓄電装置から電力供給を受けて駆動する電動モータにより制動力を発生させるブレーキ機構と、
前記第1の蓄電装置の電圧が所定値以下のときに電動モータへ電力を供給する第2の蓄電装置と、を備え、
前記第2の蓄電装置は、
前記第1の蓄電装置より高い電圧を蓄電可能であって、
所定の回転数より高い回転数での駆動が前記電動モータに要求される場合に、前記電動モータに電力供給することを特徴とするブレーキ装置。 - 請求項1に記載のブレーキ装置において、
所定の回転数より高い回転数での駆動が前記電動モータに要求される場合とは、緊急ブレーキ時であることを特徴とするブレーキ装置。 - 電動ブレーキ装置であって、該電動ブレーキ装置は、
第1の蓄電装置から電力供給を受けて駆動する電動モータにより、ディスクに押圧されるブレーキパッドを移動させるピストンに推力を伝達するブレーキ機構と、
前記第1の蓄電装置の電圧が所定値以下のときに電動モータへ電力を供給する第2の蓄電装置と、を備え、
前記第2の蓄電装置は、
前記第1の蓄電装置より高い電圧を蓄電可能であって、
所定の回転数より高い回転数での駆動が前記電動モータに要求される場合に、前記電動モータに電力供給することを特徴とする電動ブレーキ装置。 - 請求項3に記載の電動ブレーキ装置において、
所定の回転数より高い回転数での駆動が前記電動モータに要求される場合とは、緊急ブレーキ時であることを特徴とする電動ブレーキ装置。 - 請求項3に記載の電動ブレーキ装置において、
所定の回転数より高い回転数での駆動が前記電動モータに要求される場合とは、前記ピストンが前記ディスクから最も離れた位置から前記ディスク側に推進されるときであることを特徴とする電動ブレーキ装置。 - 第1の蓄電装置と前記第1の蓄電装置より高い電圧を蓄電可能な第2の蓄電装置とを切り替えて、電動モータへ電力供給を行うモータ制御装置であって、
前記モータ制御装置は、所定の回転数より高い回転数での駆動が前記電動モータに要求される場合に、前記第2の蓄電装置から前記電動モータへ電力供給することを特徴とするモータ制御装置。
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CN201980016298.6A CN111788094A (zh) | 2018-03-27 | 2019-02-20 | 制动装置及电动制动装置、以及电机控制装置 |
JP2020510422A JP7076532B2 (ja) | 2018-03-27 | 2019-02-20 | ブレーキ装置及び電動ブレーキ装置、並びにモータ制御装置 |
US16/981,782 US20210114574A1 (en) | 2018-03-27 | 2019-02-20 | Brake device, electric brake device, and motor control device |
KR1020207023806A KR102415489B1 (ko) | 2018-03-27 | 2019-02-20 | 브레이크 장치 및 전동 브레이크 장치, 및 모터 제어 장치 |
DE112019001576.1T DE112019001576T5 (de) | 2018-03-27 | 2019-02-20 | Bremseinrichtung, elektrische Bremseinrichtung und Motorsteuereinrichtung |
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CN115195686A (zh) * | 2021-04-07 | 2022-10-18 | 株式会社万都 | 制动装置 |
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KR102528404B1 (ko) * | 2018-05-17 | 2023-05-03 | 에이치엘만도 주식회사 | 전자식 브레이크 시스템 및 그 제어 방법 |
WO2023097373A1 (en) * | 2021-12-02 | 2023-06-08 | Eurospares Depot Holdings Pty Ltd | Emergency disc brake assembly |
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- 2019-02-20 US US16/981,782 patent/US20210114574A1/en not_active Abandoned
- 2019-02-20 DE DE112019001576.1T patent/DE112019001576T5/de active Pending
- 2019-02-20 WO PCT/JP2019/006207 patent/WO2019187805A1/ja active Application Filing
- 2019-02-20 KR KR1020207023806A patent/KR102415489B1/ko active IP Right Grant
- 2019-02-20 CN CN201980016298.6A patent/CN111788094A/zh active Pending
- 2019-02-20 JP JP2020510422A patent/JP7076532B2/ja active Active
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DE112019001576T5 (de) | 2020-12-24 |
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