CN109515421A - Automatic parking system, electric vehicle and the control method of electric vehicle - Google Patents
Automatic parking system, electric vehicle and the control method of electric vehicle Download PDFInfo
- Publication number
- CN109515421A CN109515421A CN201811147596.2A CN201811147596A CN109515421A CN 109515421 A CN109515421 A CN 109515421A CN 201811147596 A CN201811147596 A CN 201811147596A CN 109515421 A CN109515421 A CN 109515421A
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- Prior art keywords
- electric vehicle
- valve
- solenoid valve
- gas chamber
- brake
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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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/24—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 fluid assistance, drive, or release the fluid being gaseous
- B60T13/26—Compressed-air systems
-
- 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
- B60T13/10—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 fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a kind of automatic parking systems of electric vehicle, electric vehicle and control method, including air compressing device, preceding gas storage component, gas storage component afterwards, first front wheel brake gas chamber of corresponding each wheel setting, second front wheel brake gas chamber, first rear service brake gas chamber, second rear service brake gas chamber, the compressed air of preceding gas storage component storage is directed respectively into the first front wheel brake gas chamber and the second front wheel brake gas chamber when brake pedal is operated by the first solenoid valve and second solenoid valve by valve member, to complete front wheel brake, rear service brake is completed by third solenoid valve and the 4th solenoid valve simultaneously；Control module controls solenoid valve closing when receiving automatic parking and instructing and judge to meet condition, and electric vehicle is made to maintain on-position；Automatic parking brake is carried out to electric vehicle to realize, prevents the traffic safety of driver's driving fatigue and then guarantee electric vehicle due to taking brake operating for a long time.
Description
Technical field
The present invention relates to vehicle brake technology field, in particular to a kind of automatic parking system of electric vehicle, electric vehicle
And control method.
Background technique
In daily life, electric vehicle has become the vehicles of common in people's trip.Driving electric vehicle
In process, brake is essential link, especially blocks section in traffic lights section and urban transportation, generally requires
Driver carry out for a long time, continually take brake operating；This mode be easy to cause the driving fatigue of driver, and
It is easy to cause brake brake clamp force insufficient, influences the traffic safety of electric vehicle.
Summary of the invention
The present invention is directed to solve one of the technical problem in above-mentioned technology at least to a certain extent.For this purpose, of the invention
One purpose is to propose a kind of automatic parking system of electric vehicle, can be realized and carry out automatic parking system to electric vehicle
It is dynamic, the both feet of driver are liberated, prevent driver because taking brake operating for a long time due to driving fatigue, while preventing vehicle because of length
Time brakes and brake clamp force is insufficient, and then guarantees the traffic safety of electric vehicle.
Second object of the present invention is to propose a kind of electric vehicle.
Third object of the present invention is to propose a kind of automatic parking control method of electric vehicle.
In order to achieve the above objectives, first aspect present invention embodiment proposes a kind of automatic parking system of electric vehicle,
It include: air compressing device, the air compressing device is for generating compressed air；Preceding gas storage component and rear gas storage component, the preceding gas storage
Component and the rear gas storage component are respectively communicated with the air compressing device, to store the compressed air；First front wheel brake gas
Room, the first front wheel brake gas chamber correspond to the near front wheel setting of the electric vehicle；Second front wheel brake gas chamber, described second
Front wheel brake gas chamber corresponds to the off-front wheel setting of the electric vehicle；First rear service brake gas chamber, the first rear service brake gas
Room corresponds to the left rear wheel setting of the electric vehicle；Second rear service brake gas chamber, described in the second rear service brake gas chamber is corresponding
The off hind wheel of electric vehicle is arranged；Valve member, the valve member corresponds to the brake pedal setting of the electric vehicle, described
The first port of valve member is communicated to the preceding gas storage component, before the second port of the valve member is communicated to described first
Brake chamber is taken turns, and the gas circuit between the second port of the valve member and the first front wheel brake gas chamber is equipped with first
Solenoid valve, the third port of the valve member are communicated to the second front wheel brake gas chamber, and the third of the valve member
Gas circuit between port and the second front wheel brake gas chamber is equipped with second solenoid valve, and the 4th port of the valve member connects
The rear gas storage component is led to, the fifth port of the valve member is communicated to the first rear service brake gas chamber, and the valve
Gas circuit between the fifth port of door component and the first rear service brake gas chamber is equipped with third solenoid valve, the valve member
The 6th port be communicated to the second rear service brake gas chamber, and the 6th port of the valve member and the second rear-wheel system
The gas circuit taken offence between room is equipped with the 4th solenoid valve, and the valve member passes through described the when the brake pedal is operated
The compressed air of the preceding gas storage component storage is directed respectively into first front-wheel by one solenoid valve and the second solenoid valve
Brake chamber and the second front wheel brake gas chamber to complete front wheel brake, while passing through the third solenoid valve and described
Four solenoid valves will it is described after the compressed air of gas storage component storage be directed respectively into the first rear service brake gas chamber and described the
Two rear service brake gas chambers, to complete rear service brake；Command reception component, described instruction receiving unit are used to receive oneself of driver
Dynamic parking instruction；Control module, the control module respectively with described instruction receiving unit, first solenoid valve, described
Two solenoid valves, the third solenoid valve are connected with the 4th solenoid valve, and the control module is used in the brake pedal
It is zero that aperture, which is greater than default aperture and maintains preset time, the aperture of the gas pedal of the electric vehicle, the electric vehicle
Speed be zero, the electric vehicle is currently at drive mode, the current gear of the electric vehicle be drive or neutral gear,
And the electric vehicle is controlled when receiving automatic parking instruction and enters automatic parking mode, and controls first electromagnetism
Valve, the second solenoid valve, the third solenoid valve and the 4th solenoid valve are closed, so that the electric vehicle maintains braking
State.
The automatic parking system of electric vehicle according to an embodiment of the present invention, air compressing device is for generating compressed air；Before
Gas storage component and rear gas storage component are respectively communicated with air compressing device, with storing compressed air；The corresponding electricity of first front wheel brake gas chamber
The near front wheel of motor-car is arranged；Second front wheel brake gas chamber corresponds to the off-front wheel setting of electric vehicle；First rear service brake gas chamber
The left rear wheel setting of corresponding electric vehicle；Second rear service brake gas chamber corresponds to the off hind wheel setting of electric vehicle；Valve member pair
The brake pedal of electric vehicle is answered to be arranged, gas storage component, the second end of valve member before the first port of valve member is communicated to
Mouth is communicated to the first front wheel brake gas chamber, and sets in the gas circuit between the second port of valve member and the first front wheel brake gas chamber
Have the first solenoid valve, the third port of valve member is communicated to the second front wheel brake gas chamber, and the third port of valve member with
Gas circuit between second front wheel brake gas chamber is equipped with second solenoid valve, and the 4th port of valve member is communicated to rear gas storage group
Part, the fifth port of valve member are communicated to the first rear service brake gas chamber, and the fifth port of valve member and the first rear-wheel system
The gas circuit taken offence between room is equipped with third solenoid valve, and the 6th port of valve member is communicated to the second rear service brake gas chamber, and
Gas circuit between the 6th port and the second rear service brake gas chamber of valve member is equipped with the 4th solenoid valve, and valve member is being braked
The compressed air of preceding gas storage component storage is directed respectively by the first solenoid valve and second solenoid valve when pedal is operated
One front wheel brake gas chamber and the second front wheel brake gas chamber to complete front wheel brake, while passing through third solenoid valve and the 4th electromagnetism
The compressed air of rear gas storage component storage is directed respectively into the first rear service brake gas chamber and the second rear service brake gas chamber, with complete by valve
At rear service brake；Command reception component, command reception component are used to receive the automatic parking instruction of driver；Control module difference
It is connected with command reception component, the first solenoid valve, second solenoid valve, third solenoid valve and the 4th solenoid valve, control module is used for
To be greater than default aperture in the aperture of brake pedal and maintain preset time, the aperture of the gas pedal of electric vehicle be zero, electronic
The speed of vehicle is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle is drive or neutral gear and connects
Control electric vehicle enters automatic parking mode when receiving automatic parking instruction, and controls the first solenoid valve, second solenoid valve, the
Three solenoid valves and the 4th solenoid valve are closed, so that electric vehicle maintains on-position；Electric vehicle is carried out automatically to realize
The both feet of driver are liberated in parking braking, prevent driver because taking brake operating for a long time due to driving fatigue, while preventing vehicle
Brake clamp force is insufficient due to long-time is braked, and then guarantees the traffic safety of electric vehicle.
In addition, the automatic parking system of the electric vehicle proposed according to that above embodiment of the present invention can also have it is following attached
The technical characteristic added:
Optionally, after the electric vehicle enters automatic parking mode, the control module is also used to pass through Slope Transducer
The current hill grade information of the electric vehicle is obtained, and vehicle start tractive force is calculated according to the current hill grade information, and
The gas pedal aperture that the electric car is currently started to walk required is obtained according to the vehicle start tractive force.
Optionally, the control module is also used to reach the electric car in the aperture of the gas pedal and currently start to walk
The electric vehicle is controlled when required gas pedal aperture and exits the automatic parking mode, and controls first electromagnetism
Valve, the second solenoid valve, the third solenoid valve and the 4th solenoid valve are open-minded, so that the front and back wheel of the electric vehicle
Release braking.
Optionally, the control module calculates the vehicle start tractive force according to the following formula:
, whereinFor the vehicle start tractive force, G is vehicle weight,For rolling resistance,For air drag,It is current
The angle of gradient.
Optionally, the valve member includes: quick release valve, and the first port of the quick release valve passes through first solenoid valve
It is communicated to the first front wheel brake gas chamber, the second port of the quick release valve is communicated to described by the second solenoid valve
Two front wheel brake gas chambers；Relay valve, after the first port of the relay valve is communicated to described first by the third solenoid valve
Brake chamber is taken turns, the second port of the relay valve is communicated to the second rear service brake gas chamber by the 4th solenoid valve,
The third port of the relay valve is communicated to the rear gas storage component；Brake valve, the first port of the brake valve are communicated to institute
Gas storage component, the second port of the brake valve are communicated to the third port of the quick release valve, the third of the brake valve before stating
Port is communicated to the rear gas storage component, and the 4th port of the brake valve is communicated to the control port of the relay valve, described
Brake valve corresponds to the brake pedal setting, and brake valve conducting when the brake pedal is operated will the preceding storage
Pneumatic module storage compressed air by the first port of the brake valve, the second port of the brake valve, the quick release valve,
First solenoid valve and the second solenoid valve are directed respectively into the first front wheel brake gas chamber and second front wheel brake
Gas chamber, while the control pressure of generation is input to the control port of the relay valve so that the relay valve is connected, after described
The compressed air of gas storage component storage is directed respectively into institute by the relay valve, the third solenoid valve and the 4th solenoid valve
State the first rear service brake gas chamber and the second rear service brake gas chamber.
In order to achieve the above objectives, second aspect of the present invention embodiment proposes a kind of electric vehicle, including above-mentioned electronic
The automatic parking system of vehicle.
In order to achieve the above objectives, third aspect present invention embodiment proposes a kind of automatic parking controlling party of electric vehicle
Method, the automatic parking system of the electric vehicle include air compressing device, preceding gas storage component and rear gas storage component, the first front wheel brake
Gas chamber, the second front wheel brake gas chamber, the first rear service brake gas chamber, the second rear service brake gas chamber, valve member, the air compressing device
For generating compressed air, the preceding gas storage component and the rear gas storage component are respectively communicated with the air compressing device, with storage
The compressed air, the first front wheel brake gas chamber corresponds to the near front wheel setting of the electric vehicle, the second front-wheel system
Room of taking offence corresponds to the off-front wheel setting of the electric vehicle, and the first rear service brake gas chamber corresponds to the left back of the electric vehicle
Wheel setting, the off hind wheel that the second rear service brake gas chamber corresponds to the electric vehicle are arranged, described in the valve member correspondence
The brake pedal of electric vehicle is arranged, and the first port of the valve member is communicated to the preceding gas storage component, the valve group
The second port of part is communicated to the first front wheel brake gas chamber, and the second port of the valve member and first front-wheel
Gas circuit between brake chamber is equipped with the first solenoid valve, and the third port of the valve member is communicated to the second front-wheel system
It takes offence room, and the gas circuit between the third port of the valve member and the second front wheel brake gas chamber is equipped with the second electromagnetism
Valve, the 4th port of the valve member are communicated to the rear gas storage component, and the fifth port of the valve member is communicated to institute
The first rear service brake gas chamber is stated, and in the gas circuit between the fifth port of the valve member and the first rear service brake gas chamber
Equipped with third solenoid valve, the 6th port of the valve member is communicated to the second rear service brake gas chamber, and the valve group
Gas circuit between the 6th port and the second rear service brake gas chamber of part is equipped with the 4th solenoid valve, and the valve member is in institute
It states the pressure of the preceding gas storage component storage when brake pedal is operated through first solenoid valve and the second solenoid valve
Contracting air is directed respectively into the first front wheel brake gas chamber and the second front wheel brake gas chamber, to complete front wheel brake, together
When by the third solenoid valve and the 4th solenoid valve will it is described after the compressed air of gas storage component storage be directed respectively into
The first rear service brake gas chamber and the second rear service brake gas chamber, to complete rear service brake, the automatic parking controlling party
Method is the following steps are included: receive the automatic parking instruction of driver；When the aperture of the brake pedal is greater than default aperture and dimension
Hold preset time, the aperture of the gas pedal of the electric vehicle is zero, the speed of the electric vehicle is zero, the electric vehicle
It is currently at drive mode, the current gear of the electric vehicle is drive or neutral gear and receives the automatic parking
The electric vehicle is controlled when instruction and enters automatic parking mode, and controls first solenoid valve, the second solenoid valve, institute
It states third solenoid valve and the 4th solenoid valve is closed, so that the electric vehicle maintains on-position.
Automatic parking control method according to an embodiment of the present invention, firstly, receiving the automatic parking instruction of driver；So
It afterwards, is zero when the aperture of brake pedal is greater than default aperture and maintains preset time, the aperture of the gas pedal of electric vehicle, electricity
The speed of motor-car is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle be drive or neutral gear and
Control electric vehicle enters automatic parking mode when receiving automatic parking instruction, and control the first solenoid valve, second solenoid valve,
Third solenoid valve and the 4th solenoid valve are closed, so that electric vehicle maintains on-position；Electric vehicle is carried out certainly to realize
Dynamic parking braking, liberates the both feet of driver, prevents driver because taking brake operating for a long time due to driving fatigue, prevent simultaneously
Vehicle brake clamp force due to long-time is braked is insufficient, and then guarantees the traffic safety of electric vehicle.
In addition, the automatic parking control method of the electric vehicle proposed according to that above embodiment of the present invention can also have as
Under additional technical characteristic:
Optionally, after the electric vehicle enters automatic parking mode, further includes: obtained by Slope Transducer described electronic
The current hill grade information of vehicle, and vehicle start tractive force is calculated according to the current hill grade information, and according to the vehicle
Starting tractive force obtains the gas pedal aperture that the electric car is currently started to walk required.
Optionally, when the aperture of the gas pedal reaches the gas pedal aperture that the electric car is currently started to walk required
When, control the electric vehicle and exit the automatic parking mode, and control first solenoid valve, the second solenoid valve,
The third solenoid valve and the 4th solenoid valve are open-minded, so that the front and back wheel of the electric vehicle releases braking.
Optionally, the vehicle start tractive force is calculated according to the following formula:, wherein
For the vehicle start tractive force, G is vehicle weight,For rolling resistance,For air drag,For current hill grade angle.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the automatic parking system of the electric vehicle of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram according to the automatic parking system of the electric vehicle of another embodiment of the present invention；
Fig. 3 is the flow diagram according to the automatic parking control method of the electric vehicle of the embodiment of the present invention；
Fig. 4 is the flow diagram according to the automatic parking control method of the electric vehicle of another embodiment of the present invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In existing electric vehicle parking system, when encountering traffic lights or traffic congestion section, driver is needed
Prolonged brake operating is artificially carried out, the driving fatigue of driver is be easy to cause, and influences the traffic safety of vehicle；This
The automatic parking system for the electric vehicle that inventive embodiments propose, air compressing device is for generating compressed air；Preceding gas storage component and
Gas storage component is respectively communicated with air compressing device afterwards, with storing compressed air；First front wheel brake gas chamber corresponds to a left side for electric vehicle
Front-wheel setting；Second front wheel brake gas chamber corresponds to the off-front wheel setting of electric vehicle；First rear service brake gas chamber corresponds to electric vehicle
Left rear wheel setting；Second rear service brake gas chamber corresponds to the off hind wheel setting of electric vehicle；Valve member corresponds to electric vehicle
Brake pedal setting, gas storage component before the first port of valve member is communicated to, the second port of valve member is communicated to the
One front wheel brake gas chamber, and the gas circuit between the second port of valve member and the first front wheel brake gas chamber is equipped with the first electromagnetism
Valve, the third port of valve member are communicated to the second front wheel brake gas chamber, and the third port of valve member and the second front-wheel system
The gas circuit taken offence between room is equipped with second solenoid valve, and the 4th port of valve member is communicated to rear gas storage component, valve member
Fifth port be communicated to the first rear service brake gas chamber, and between the fifth port of valve member and the first rear service brake gas chamber
Gas circuit is equipped with third solenoid valve, and the 6th port of valve member is communicated to the second rear service brake gas chamber, and the of valve member
Gas circuit between six ports and the second rear service brake gas chamber is equipped with the 4th solenoid valve, and valve member is when brake pedal is operated
The compressed air of preceding gas storage component storage is directed respectively into the first front wheel brake gas by the first solenoid valve and second solenoid valve
Room and the second front wheel brake gas chamber to complete front wheel brake, while passing through third solenoid valve and the 4th solenoid valve for rear gas storage group
The compressed air of part storage is directed respectively into the first rear service brake gas chamber and the second rear service brake gas chamber, to complete rear service brake；
Command reception component, command reception component are used to receive the automatic parking instruction of driver；Control module respectively with command reception
Component, the first solenoid valve, second solenoid valve, third solenoid valve and the 4th solenoid valve are connected, and control module is used in brake pedal
Aperture to be greater than default aperture and maintain preset time, the aperture of the gas pedal of electric vehicle be zero, the speed of electric vehicle
It is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle is that drive or neutral gear and receiving is stayed automatically
Control electric vehicle enters automatic parking mode when vehicle instructs, and control the first solenoid valve, second solenoid valve, third solenoid valve and
4th solenoid valve is closed, so that electric vehicle maintains on-position；Automatic parking brake, solution are carried out to electric vehicle to realize
The both feet for putting driver prevent driver because taking brake operating for a long time due to driving fatigue, while preventing vehicle because for a long time
It brakes and brake clamp force deficiency, and then guarantees the traffic safety of electric vehicle.
In order to better understand the above technical scheme, the exemplary reality that the present invention will be described in more detail below with reference to accompanying drawings
Apply example.Although showing exemplary embodiment of the present invention in attached drawing, it being understood, however, that may be realized in various forms this hair
It is bright and should not be limited by the embodiments set forth herein.It is to be able to thoroughly understand this on the contrary, providing these embodiments
Invention, and the scope of the present invention can be fully disclosed to those skilled in the art.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
Technical solution is stated to be described in detail.
Fig. 1 is the structural schematic diagram of the automatic parking system of the electric vehicle proposed according to the embodiment of the present invention, such as Fig. 1 institute
Show, the automatic parking system of the electric vehicle includes: air compressing device 10, preceding gas storage component 20, rear gas storage component 30, the first front-wheel
Brake chamber 40, the second front wheel brake gas chamber 50, the first rear service brake gas chamber 60, the second rear service brake gas chamber 70, valve member
80, command reception component 90 and control module 100.
Wherein, air compressing device 10 is for generating compressed air.
As an example, air compressing device 10 is air compressor, and it is empty to form compression by air compressor compressed atmosphere
Gas, to provide compressed air needed for parking system braking process.
Preceding gas storage component 20 and rear gas storage component 30 are respectively communicated with air compressing device 10, with storing compressed air.
That is, by the way that preceding gas storage component 20 and rear gas storage component 30 is arranged, so that preceding gas storage component 20 and rear gas storage
Component 30 with air compressing device 10, is stored respectively with the compressed air generated to the compression of air compressing device 10.
The near front wheel setting of the corresponding electric vehicle of first front wheel brake gas chamber 40.
The off-front wheel setting of the corresponding electric vehicle of second front wheel brake gas chamber 50.
The left rear wheel setting of the corresponding electric vehicle of first rear service brake gas chamber 60.
The off hind wheel setting of the corresponding electric vehicle of second rear service brake gas chamber 70.
That is, each wheel of electric vehicle is respectively arranged with corresponding brake chamber.
The brake pedal setting of the corresponding electric vehicle of valve member 80, the first port 81 of valve member are communicated to preceding gas storage
Component 20, the second port 82 of valve member are communicated to the first front wheel brake gas chamber 40, and the second port 82 of valve member with
Gas circuit between first front wheel brake gas chamber 40 is equipped with the first solenoid valve 41, and the third port 83 of valve member is communicated to second
Front wheel brake gas chamber 50, and the gas circuit between the third port 83 of valve member and the second front wheel brake gas chamber 50 is equipped with second
Solenoid valve 51, the 4th port 84 of valve member are communicated to rear gas storage component 30, and the fifth port 85 of valve member is communicated to
One rear service brake gas chamber 60, and the gas circuit between the fifth port 85 of valve member and the first rear service brake gas chamber 60 is equipped with the
Three solenoid valves 61, the 6th port 86 of valve member are communicated to the second rear service brake gas chamber 70, and the 6th port of valve member
86 and the second gas circuit between rear service brake gas chamber 70 be equipped with the 4th solenoid valve 71, valve member is when brake pedal is operated
The compressed air that preceding gas storage component 20 stores is directed respectively into the first front-wheel by the first solenoid valve 41 and second solenoid valve 51
Brake chamber 40 and the second front wheel brake gas chamber 50 to complete front wheel brake, while passing through third solenoid valve 61 and the 4th electromagnetism
The compressed air that rear gas storage component 30 stores is directed respectively into the first rear service brake gas chamber 60 and the second rear service brake gas by valve 71
Room 70, to complete rear service brake.
That is, in the first front wheel brake gas chamber 40 and valve member 80, the second front wheel brake gas chamber 50 and valve group
The first solenoid valve 41 and second solenoid valve 51 are respectively set in gas circuit between part 80；In the first rear service brake gas chamber 60 and valve
Third solenoid valve 61 and the 4th electricity are respectively set in gas circuit between component 80, the second rear service brake gas chamber 70 and valve member 80
Magnet valve 71；So as in the automatic parking system for the electric vehicle that the embodiment of the present invention proposes after carrying out automatic parking mode,
By closing the first solenoid valve 41, second solenoid valve 51, third solenoid valve 61 and the 4th solenoid valve 71, so that electric vehicle maintains
On-position.
Command reception component 90 is used to receive the automatic parking instruction of driver.
Wherein, the set-up mode of command reception component 90 can there are many, for example, the brake pedal of settable electric vehicle
As command reception component 90, thus by the duration for obtaining brake pedal braking, and when the duration reaches default
Threshold value when determine the instruction of current service brake for automatic parking instruction；Alternatively, automatic parking is arranged in electric vehicle control panel
Button, to receive the automatic parking instruction of driver by automatic parking button.
Control module 100 respectively with command reception component 90, the first solenoid valve 41, second solenoid valve 51, third solenoid valve
61 are connected with the 4th solenoid valve 71, and control module 100 is used for when the aperture of brake pedal is greater than default aperture and remains default
Between, the aperture of the gas pedal of electric vehicle be zero, the speed of electric vehicle is zero, electric vehicle is currently at drive mode,
Control electric vehicle enters when the current gear of electric vehicle is drive or neutral gear and receives automatic parking instruction stays automatically
Vehicle mode, and control the first solenoid valve 41, second solenoid valve 51, third solenoid valve 61 and the 4th solenoid valve 71 and close, so that electric
Motor-car maintains on-position.
That is, control module 100 respectively with command reception component 90, the first solenoid valve 41, second solenoid valve 51,
Three solenoid valves 61 are connected with the 4th solenoid valve 71, also, parking system in real time opens the aperture of brake pedal, gas pedal
Degree, the speed of electric vehicle, drive mode, gear information are monitored；And it is greater than default open in the aperture when brake pedal
It spends and maintenance preset time, the aperture of the gas pedal of electric vehicle is zero, the speed of electric vehicle is zero, electric vehicle is current
When current gear in drive mode, electric vehicle is drive or neutral gear and receives automatic parking instruction, control module
100 the first solenoid valves 41 of control, second solenoid valve 51, third solenoid valve 61 and the 4th solenoid valve 71 are closed, so that electric vehicle
Maintain on-position, wherein refer to that vehicle can carry out the state of normally travel in drive mode.
In conclusion the automatic parking system of electric vehicle according to an embodiment of the present invention, air compressing device is for generating pressure
Contracting air；Preceding gas storage component and rear gas storage component are respectively communicated with air compressing device, with storing compressed air；First front wheel brake gas
Room corresponds to the near front wheel setting of electric vehicle；Second front wheel brake gas chamber corresponds to the off-front wheel setting of electric vehicle；First rear-wheel
Brake chamber corresponds to the left rear wheel setting of electric vehicle；Second rear service brake gas chamber corresponds to the off hind wheel setting of electric vehicle；Valve
Door component corresponds to the brake pedal setting of electric vehicle, gas storage component, valve member before the first port of valve member is communicated to
Second port be communicated to the first front wheel brake gas chamber, and between the second port of valve member and the first front wheel brake gas chamber
Gas circuit is equipped with the first solenoid valve, and the third port of valve member is communicated to the second front wheel brake gas chamber, and the of valve member
Gas circuit between three ports and the second front wheel brake gas chamber is equipped with second solenoid valve, after the 4th port of valve member is communicated to
Gas storage component, the fifth port of valve member are communicated to the first rear service brake gas chamber, and the fifth port of valve member and first
Gas circuit between rear service brake gas chamber is equipped with third solenoid valve, and the 6th port of valve member is communicated to the second rear service brake gas
Room, and the gas circuit between the 6th port and the second rear service brake gas chamber of valve member is equipped with the 4th solenoid valve, valve member
The compressed air of preceding gas storage component storage is led respectively by the first solenoid valve and second solenoid valve when brake pedal is operated
Enter to the first front wheel brake gas chamber and the second front wheel brake gas chamber, to complete front wheel brake, while passing through third solenoid valve and the
The compressed air of rear gas storage component storage is directed respectively into the first rear service brake gas chamber and the second rear service brake gas by four solenoid valves
Room, to complete rear service brake；Command reception component, command reception component are used to receive the automatic parking instruction of driver；Control
Module is connected with command reception component, the first solenoid valve, second solenoid valve, third solenoid valve and the 4th solenoid valve respectively, control
Module is used to be greater than default aperture in the aperture of brake pedal and maintenance preset time, the aperture of the gas pedal of electric vehicle are
Zero, the speed of electric vehicle is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle is drive or sky
Shelves and control electric vehicle enters automatic parking mode when receiving automatic parking instruction, and control the first solenoid valve, the second electricity
Magnet valve, third solenoid valve and the 4th solenoid valve are closed, so that electric vehicle maintains on-position；To realize to electric vehicle into
Row automatic parking brake liberates the both feet of driver, prevents driver because taking brake operating for a long time due to driving fatigue, simultaneously
It prevents vehicle brake clamp force due to long-time is braked insufficient, and then guarantees the traffic safety of electric vehicle.
In some embodiments, electric vehicle slides backward during automatic parking in order to prevent, and makes electronic
Vehicle can gently start to walk to travel on having acclive road surface after automatic parking, the electric vehicle that the embodiment of the present invention proposes
Automatic parking system in, after electric vehicle enters automatic parking mode, control module 100 is also used to pass through Slope Transducer
110 obtain the current hill grade information of electric vehicle, and calculate vehicle start tractive force according to current hill grade information, and according to vehicle
Starting tractive force obtains the electric vehicle gas pedal aperture that currently starts to walk required.
Wherein, there are many calculations of vehicle start tractive force.
As an example, control module 100 calculates vehicle start tractive force according to the following formula:, whereinFor the vehicle start tractive force, G is vehicle weight,For rolling resistance,
For air drag,For current hill grade angle；That is, control module 100 is according to vehicle weight, rolling resistance, air drag
And current hill grade angle carries out the calculating of vehicle start tractive force.
It should be noted that can also be carried out for the convenience of the users to the aperture of throttle for the driving of electric vehicle
Monitoring in order to which automatic parking system is contacting automatic parking mode according to the aperture of throttle, and is controlled according to the aperture of throttle
On the opportunity for solving automatic parking mode, guarantee the gentle starting of electric vehicle.
As an example, control module 100 is also used to reach electric car in the aperture of gas pedal and currently start to walk institute
Control electric vehicle exits automatic parking mode when the gas pedal aperture needed, and controls the first solenoid valve 41, second solenoid valve
51, third solenoid valve 61 and the 4th solenoid valve 71 are open-minded, so that the front and back wheel of electric vehicle contacts braking, so that electric vehicle can
Gently to start to walk on having acclive road surface.
In conclusion control module also passes through slope in the automatic parking system of electric vehicle according to an embodiment of the present invention
The current hill grade information that sensor obtains electric vehicle is spent, and according to grade information calculating vehicle start tractive force, and according to
Vehicle start tractive force obtains the gas pedal aperture that electric vehicle is currently started to walk required, so that realizing prevents electric vehicle certainly
It is slid backward during dynamic parking, and electric vehicle can gently be risen after automatic parking on having acclive road surface
Walking is sailed.
As shown in Fig. 2, in some embodiments, in the automatic parking system for the electric vehicle that the embodiment of the present invention proposes,
Valve member includes: quick release valve 87, relay valve 88 and brake valve 89.
Wherein, the first port 871 of quick release valve is communicated to the first front wheel brake gas chamber 40 by the first solenoid valve 41, puts fastly
The second port 872 of valve is communicated to the second front wheel brake gas chamber 50 by second solenoid valve 51；
The first port 881 of relay valve is communicated to the first rear service brake gas chamber 60 by third solenoid valve 61, and the second of relay valve
Port 882 is communicated to the second rear service brake gas chamber 70 by the 4th solenoid valve 71, and the third port 883 of relay valve is stored up after being communicated to
Pneumatic module 30；
Gas storage component 20 before the first port 891 of brake valve is communicated to, the second port 892 of brake valve are communicated to the of quick release valve
Three ports 873, the third port 893 of brake valve are communicated to rear gas storage component 30, and the 4th port 894 of brake valve is communicated to servo
The control port 884 of valve, the corresponding brake pedal setting of brake valve 89, the conducting when brake pedal is operated of brake valve 89 will
The compressed air of preceding gas storage component 20 passes through the first port 891 of brake valve, the second port of brake valve 892, quick release valve 87, the
One solenoid valve 41 and second solenoid valve 51 are directed respectively into the first front wheel brake gas chamber 40 and the second front wheel brake gas chamber 50, simultaneously will
The control pressure of generation is input to the control port 884 of relay valve so that relay valve 88 is connected, and the compression of rear gas storage component 30 is empty
Gas is directed respectively into the first rear service brake gas chamber 60 and the second rear-wheel by relay valve 88, third solenoid valve 61 and the 4th solenoid valve 71
Brake chamber 70.
To realize above-described embodiment, the embodiment of the present invention proposes a kind of electric vehicle, including above-mentioned electric vehicle
Automatic parking system.
To realize above-described embodiment, the embodiment of the present invention proposes a kind of automatic parking control method of electric vehicle, electricity
The automatic parking system of motor-car includes air compressing device, preceding gas storage component and rear gas storage component, the first front wheel brake gas chamber, second
Front wheel brake gas chamber, the first rear service brake gas chamber, the second rear service brake gas chamber, valve member, air compressing device is for generating compression
Air, preceding gas storage component and rear gas storage component are respectively communicated with air compressing device, with storing compressed air, the first front wheel brake gas
Room corresponds to the near front wheel setting of electric vehicle, and the second front wheel brake gas chamber corresponds to the off-front wheel setting of electric vehicle, the first rear-wheel
Brake chamber corresponds to the left rear wheel setting of electric vehicle, and the second rear service brake gas chamber corresponds to the off hind wheel setting of electric vehicle, valve
Door component corresponds to the brake pedal setting of electric vehicle, gas storage component, valve member before the first port of valve member is communicated to
Second port be communicated to the first front wheel brake gas chamber, and between the second port of valve member and the first front wheel brake gas chamber
Gas circuit is equipped with the first solenoid valve, and the third port of valve member is communicated to the second front wheel brake gas chamber, and the of valve member
Gas circuit between three ports and the second front wheel brake gas chamber is equipped with second solenoid valve, after the 4th port of valve member is communicated to
Gas storage component, the fifth port of valve member are communicated to the first rear service brake gas chamber, and the fifth port of valve member and first
Gas circuit between rear service brake gas chamber is equipped with third solenoid valve, and the 6th port of valve member is communicated to the second rear service brake gas
Room, and the gas circuit between the 6th port and the second rear service brake gas chamber of valve member is equipped with the 4th solenoid valve, valve member
The compressed air of preceding gas storage component storage is led respectively by the first solenoid valve and second solenoid valve when brake pedal is operated
Enter to the first front wheel brake gas chamber and the second front wheel brake gas chamber, to complete front wheel brake, while passing through third solenoid valve and the
The compressed air of rear gas storage component storage is directed respectively into the first rear service brake gas chamber and the second rear service brake gas by four solenoid valves
Room, to complete rear service brake, as shown in figure 3, automatic parking control method the following steps are included:
S101 receives the automatic parking instruction of driver.
S102, when the aperture of brake pedal is greater than default aperture and maintains preset time, the gas pedal of electric vehicle
Aperture is zero, the speed of electric vehicle is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle is driving
Shelves or neutral gear and control electric vehicle enters automatic parking mode when receiving automatic parking instruction, and control the first solenoid valve,
Second solenoid valve, third solenoid valve and the 4th solenoid valve are closed, so that electric vehicle maintains on-position.
It should be noted that the above-mentioned description about the automatic parking system of electric vehicle in Fig. 1 is equally applicable to the electricity
The automatic parking control method of motor-car, this will not be repeated here.
In conclusion automatic parking control method according to an embodiment of the present invention, firstly, receiving the automatic parking of driver
Instruction；Then, when the aperture of brake pedal is greater than default aperture and maintains preset time, the aperture of the gas pedal of electric vehicle
Be zero, the speed of electric vehicle is zero, electric vehicle is currently at drive mode, the current gear of electric vehicle be drive or
Neutral gear and control electric vehicle enters automatic parking mode when receiving automatic parking instruction, and control the first solenoid valve, second
Solenoid valve, third solenoid valve and the 4th solenoid valve are closed, so that electric vehicle maintains on-position；To realize to electric vehicle
Automatic parking brake is carried out, the both feet of driver is liberated, prevents driver because taking brake operating for a long time due to driving fatigue, together
When prevent vehicle brake clamp force due to long-time is braked insufficient, and then guarantee the traffic safety of electric vehicle.
As shown in figure 4, in some embodiments, electric vehicle slips after generating on having acclive road surface in order to prevent,
Guarantee electric vehicle gentle start after releasing automatic parking mode, the automatic parking for the electric vehicle that the embodiment of the present invention proposes
Control method is further comprising the steps of after entering automatic parking mode:
S201 is obtained the current hill grade information of electric vehicle by Slope Transducer, and calculates vehicle according to current hill grade information
Start to walk tractive force, and the gas pedal aperture for currently starting to walk required according to vehicle start tractive force acquisition electric car.
It should be noted that there are many calculations of vehicle start tractive force.
As an example, vehicle start tractive force is calculated by formula once:, whereinFor the vehicle start tractive force, G is vehicle weight,For rolling resistance,For air drag,For current hill grade angle.
S202, when the aperture of gas pedal reaches the gas pedal aperture that electric car is currently started to walk required, control electricity
Motor-car exits automatic parking mode, and controls the first solenoid valve, second solenoid valve, third solenoid valve and the 4th solenoid valve and open
It is logical, so that the front and back wheel of electric vehicle releases braking.
That is, when the aperture for detecting gas pedal is more than or equal to and calculates gained gas pedal aperture, control electricity
Motor-car exits automatic parking mode, so that electric vehicle can be with gentle start.
In conclusion the automatic parking control method for the electric vehicle that the embodiment of the present invention proposes, firstly, being passed by the gradient
Sensor obtains the current hill grade information of electric vehicle, and according to current hill grade information calculating vehicle start tractive force, and according to
Vehicle start tractive force obtains the gas pedal aperture that electric car is currently started to walk required；Then, when the aperture of gas pedal reaches
When the gas pedal aperture for currently starting to walk required to electric car, control electric vehicle exits automatic parking mode, and controls the
One solenoid valve, second solenoid valve, third solenoid valve and the 4th solenoid valve are open-minded, so that the front and back wheel of electric vehicle releases braking；
To prevent electric vehicle from slipping after generation on having acclive road surface, guarantee that electric vehicle is put down after releasing automatic parking mode
Steady starting.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
It should be noted that in the claims, any reference symbol between parentheses should not be configured to power
The limitation that benefit requires.Word "comprising" does not exclude the presence of component or step not listed in the claims.Before component
Word "a" or "an" does not exclude the presence of multiple such components.The present invention can be by means of including several different components
It hardware and is realized by means of properly programmed computer.In the unit claims listing several devices, these are filled
Several in setting, which can be, to be embodied by the same item of hardware.The use of word first, second, and third is not
Indicate any sequence.These words can be construed to title.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
In the description of the present invention, it is to be understood that, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indication or suggestion relative importance or implicitly indicates the quantity of indicated technical characteristic.Define as a result, " the
One ", the feature of " second " can explicitly or implicitly include one or more of the features.In the description of the present invention,
The meaning of " plurality " is two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It is interpreted as that identical embodiment or example must be directed to.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of automatic parking system of electric vehicle characterized by comprising
Air compressing device, the air compressing device is for generating compressed air；
Preceding gas storage component and rear gas storage component, the preceding gas storage component and the rear gas storage component are respectively communicated with the pneumatics dress
It sets, to store the compressed air；
First front wheel brake gas chamber, the first front wheel brake gas chamber correspond to the near front wheel setting of the electric vehicle；
Second front wheel brake gas chamber, the second front wheel brake gas chamber correspond to the off-front wheel setting of the electric vehicle；
First rear service brake gas chamber, the first rear service brake gas chamber correspond to the left rear wheel setting of the electric vehicle；
Second rear service brake gas chamber, the second rear service brake gas chamber correspond to the off hind wheel setting of the electric vehicle；
Valve member, the valve member correspond to the brake pedal setting of the electric vehicle, the first end of the valve member
Mouth is communicated to the preceding gas storage component, and the second port of the valve member is communicated to the first front wheel brake gas chamber, and institute
The gas circuit stated between the second port of valve member and the first front wheel brake gas chamber is equipped with the first solenoid valve, the valve
The third port of component is communicated to the second front wheel brake gas chamber, and before the third port of the valve member and described second
It takes turns the gas circuit between brake chamber and is equipped with second solenoid valve, the 4th port of the valve member is communicated to the rear gas storage group
Part, the fifth port of the valve member are communicated to the first rear service brake gas chamber, and the fifth port of the valve member
Gas circuit between the first rear service brake gas chamber is equipped with third solenoid valve, and the 6th port of the valve member is communicated to
The second rear service brake gas chamber, and the gas circuit between the 6th port and the second rear service brake gas chamber of the valve member
It is equipped with the 4th solenoid valve, the valve member passes through first solenoid valve and described the when the brake pedal is operated
The compressed air of the preceding gas storage component storage is directed respectively into the first front wheel brake gas chamber and described by two solenoid valves
Two front wheel brake gas chambers, to complete front wheel brake, while will be described by the third solenoid valve and the 4th solenoid valve after
The compressed air of gas storage component storage is directed respectively into the first rear service brake gas chamber and the second rear service brake gas chamber, with
Complete rear service brake；
Command reception component, described instruction receiving unit are used to receive the automatic parking instruction of driver；
Control module, the control module respectively with described instruction receiving unit, first solenoid valve, second electromagnetism
Valve, the third solenoid valve are connected with the 4th solenoid valve, and the control module is used for big in the aperture of the brake pedal
In default aperture and to maintain preset time, the aperture of the gas pedal of the electric vehicle be the speed of zero, the electric vehicle
It is zero, the electric vehicle is currently at drive mode, the current gear of the electric vehicle is drive or neutral gear and receives
Enter automatic parking mode to the electric vehicle is controlled when automatic parking instruction, and controls first solenoid valve, institute
It states second solenoid valve, the third solenoid valve and the 4th solenoid valve to close, so that the electric vehicle maintains on-position.
2. the automatic parking system of electric vehicle as described in claim 1, which is characterized in that enter certainly in the electric vehicle
After dynamic park mode, the control module is also used to obtain the current hill grade information of the electric vehicle by Slope Transducer,
And vehicle start tractive force is calculated according to the current hill grade information, and the electricity is obtained according to the vehicle start tractive force
The gas pedal aperture that electrical automobile is currently started to walk required.
3. the automatic parking system of electric vehicle as claimed in claim 2, which is characterized in that the control module is also used to
The aperture of the gas pedal controls the electric vehicle when reaching the gas pedal aperture that the electric car is currently started to walk required
The automatic parking mode is exited, and controls first solenoid valve, the second solenoid valve, the third solenoid valve and institute
State that the 4th solenoid valve is open-minded, so that the front and back wheel of the electric vehicle releases braking.
4. the automatic parking system of electric vehicle as claimed in claim 2, which is characterized in that the control module is according to following
Formula calculates the vehicle start tractive force:
, whereinFor the vehicle start tractive force, G is vehicle weight,For rolling resistance,For air drag,For current hill grade angle.
5. such as the automatic parking system of electric vehicle of any of claims 1-4, which is characterized in that the valve group
Part includes:
The first port of quick release valve, the quick release valve is communicated to the first front wheel brake gas chamber by first solenoid valve,
The second port of the quick release valve is communicated to the second front wheel brake gas chamber by the second solenoid valve；
The first port of relay valve, the relay valve is communicated to the first rear service brake gas chamber by the third solenoid valve,
The second port of the relay valve is communicated to the second rear service brake gas chamber by the 4th solenoid valve, the relay valve
Third port is communicated to the rear gas storage component；
Brake valve, the first port of the brake valve are communicated to the preceding gas storage component, the second port connection of the brake valve
To the third port of the quick release valve, the third port of the brake valve is communicated to the rear gas storage component, the brake valve
4th port is communicated to the control port of the relay valve, and the brake valve corresponds to the brake pedal setting, the brake valve
The conducting when the brake pedal is operated, that the compressed air of the preceding gas storage component storage is passed through into the brake valve
Single port, the second port of the brake valve, the quick release valve, first solenoid valve and the second solenoid valve are directed respectively into
The first front wheel brake gas chamber and the second front wheel brake gas chamber, while the control pressure of generation is input to the servo
For the control port of valve so that the relay valve is connected, the compressed air of the rear gas storage component storage passes through the relay valve, institute
It states third solenoid valve and the 4th solenoid valve is directed respectively into the first rear service brake gas chamber and the second rear service brake gas
Room.
6. a kind of electric vehicle, which is characterized in that staying automatically including electric vehicle according to any one of claims 1 to 5
Vehicle system.
7. a kind of automatic parking control method of electric vehicle, which is characterized in that the automatic parking system packet of the electric vehicle
Include air compressing device, preceding gas storage component and rear gas storage component, the first front wheel brake gas chamber, the second front wheel brake gas chamber, the first rear-wheel
Brake chamber, the second rear service brake gas chamber, valve member, the air compressing device is for generating compressed air, the preceding gas storage group
Part and the rear gas storage component are respectively communicated with the air compressing device, to store the compressed air, first front wheel brake
Gas chamber corresponds to the near front wheel setting of the electric vehicle, and the second front wheel brake gas chamber corresponds to the off-front wheel of the electric vehicle
Setting, the first rear service brake gas chamber correspond to the left rear wheel setting of the electric vehicle, the second rear service brake gas chamber pair
The off hind wheel of the electric vehicle is answered to be arranged, the valve member corresponds to the brake pedal setting of the electric vehicle, the valve
The first port of door component is communicated to the preceding gas storage component, and the second port of the valve member is communicated to first front-wheel
Brake chamber, and the gas circuit between the second port of the valve member and the first front wheel brake gas chamber is equipped with the first electricity
Magnet valve, the third port of the valve member are communicated to the second front wheel brake gas chamber, and the third end of the valve member
Gas circuit between mouth and the second front wheel brake gas chamber is equipped with second solenoid valve, and the 4th port of the valve member is connected to
To the rear gas storage component, the fifth port of the valve member is communicated to the first rear service brake gas chamber, and the valve
Gas circuit between the fifth port of component and the first rear service brake gas chamber is equipped with third solenoid valve, the valve member
6th port is communicated to the second rear service brake gas chamber, and the 6th port of the valve member and second rear service brake
Gas circuit between gas chamber is equipped with the 4th solenoid valve, and the valve member passes through described first when the brake pedal is operated
The compressed air of the preceding gas storage component storage is directed respectively into the first front-wheel system by solenoid valve and the second solenoid valve
It takes offence room and the second front wheel brake gas chamber, to complete front wheel brake, while passing through the third solenoid valve and the described 4th
The compressed air of gas storage component storage is directed respectively into the first rear service brake gas chamber and described second after solenoid valve will be described
Rear service brake gas chamber, to complete rear service brake, the automatic parking control method the following steps are included:
Receive the automatic parking instruction of driver；
When the aperture of the brake pedal is greater than default aperture and preset time, the gas pedal of the electric vehicle is maintained to open
Degree is zero, the speed of the electric vehicle is zero, the electric vehicle is currently at drive mode, the electric vehicle it is current
Gear is drive or neutral gear and controls the electric vehicle when receiving automatic parking instruction and enter automatic parking mould
Formula, and control first solenoid valve, the second solenoid valve, the third solenoid valve and the 4th solenoid valve and close, with
The electric vehicle is set to maintain on-position.
8. the automatic parking control method of electric vehicle as claimed in claim 7, which is characterized in that the electric vehicle into
After entering automatic parking mode, further includes:
The current hill grade information of the electric vehicle is obtained by Slope Transducer, and vehicle is calculated according to the current hill grade information
Starting tractive force, and the electric car is obtained according to the vehicle start tractive force and is currently started to walk required gas pedal
Aperture.
9. the automatic parking control method of electric vehicle as claimed in claim 8, which is characterized in that when the gas pedal
When aperture reaches the gas pedal aperture that the electric car is currently started to walk required, control the electric vehicle exit it is described automatic
Park mode, and control first solenoid valve, the second solenoid valve, the third solenoid valve and the 4th solenoid valve and open
It is logical, so that the front and back wheel of the electric vehicle releases braking.
10. the automatic parking control method of electric vehicle as claimed in claim 8, which is characterized in that count according to the following formula
Calculate the vehicle start tractive force:
, whereinFor the vehicle start tractive force, G is vehicle weight,For rolling resistance,For air drag,For current hill grade angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811147596.2A CN109515421A (en) | 2018-09-29 | 2018-09-29 | Automatic parking system, electric vehicle and the control method of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811147596.2A CN109515421A (en) | 2018-09-29 | 2018-09-29 | Automatic parking system, electric vehicle and the control method of electric vehicle |
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| CN201811147596.2A Pending CN109515421A (en) | 2018-09-29 | 2018-09-29 | Automatic parking system, electric vehicle and the control method of electric vehicle |
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| CN112706769A (en) * | 2019-10-25 | 2021-04-27 | 郑州宇通重工有限公司 | Hill starting auxiliary control method and system |
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Application publication date: 20190326 |