CN108749579A - Grounding self-inspection method and device for high-voltage system, high-voltage system and automobile - Google Patents
Grounding self-inspection method and device for high-voltage system, high-voltage system and automobile Download PDFInfo
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- CN108749579A CN108749579A CN201810562575.0A CN201810562575A CN108749579A CN 108749579 A CN108749579 A CN 108749579A CN 201810562575 A CN201810562575 A CN 201810562575A CN 108749579 A CN108749579 A CN 108749579A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The embodiment of the invention provides a grounding self-checking method and device for a high-voltage system, the high-voltage system and an automobile, wherein the grounding self-checking method for the high-voltage system comprises the following steps: receiving a first voltage value detected by a first voltage data collector and a second voltage value detected by a second voltage data collector; comparing the first voltage value with the second voltage value to obtain a comparison result; and according to the comparison result, when the grounding abnormality of the direct current-to-direct current power supply is determined, generating a control signal and sending the control signal to the vehicle control unit. According to the scheme provided by the embodiment of the invention, the voltage values between the grounding end of the DC power supply and the negative end of the storage battery and between the shell of the high-voltage controller and the negative end of the storage battery are compared and judged through the high-voltage controller, and when the grounding is determined to be abnormal, a control signal is generated and sent to the whole vehicle controller to control the vehicle to take corresponding safety measures, so that the driving risk is reduced, and the driving safety of the vehicle is ensured.
Description
Technical field
The present invention relates to electric vehicle engineering field, more particularly to the ground self-checking method, apparatus of a kind of high-pressure system, height
Pressure system and automobile.
Background technology
For orthodox car, an important feature of electric vehicle is exactly that interior be equipped with can guarantee enough dynamic property
The high-pressure system of energy, includes charging system, distribution box, energy-storage system (power battery), dynamical system (i.e. driving motor) etc.
High voltage component.Existing high-voltage electricity injury hidden danger is different from orthodox car completely therefrom, be up to the voltage of 300V or more with
And it is likely to be breached tens of, even hundreds of amperes electric currents and tests the safe to use of on-board high-voltage electrical appliance at any time.So regulation
All exposed electric conductors, should conduct and be connected to level platform, and the connection impedance between exposed conductor and level platform is made to be no more than 0.1
Europe, current major part earthing mode are attached by electric lead or earth cable.
Electric vehicle high-voltage system developing direction is big Integrated Solution at present, i.e., electric machine controller, charger, direct current is turned straight
Galvanic electricity source, high voltage distribution box etc. are integrated, and the ground terminal (while being also shell) of DC-DC power supply connects in Integrated Solution
Being connected on vehicle frame has a plurality of approach, such as：
1., the ground strap of shell, impedance is minimum, and output current mainly passes through this approach；
2., on shell and vehicle other component junction bolt；
3., the shielded layer of high-voltage shielding line；
4., the ground wire in low-voltage signal harness；
Operating current when DC-DC power supply works can reach tens amperes of even hundreds of amperes, in normal condition
Under, 1. which is used as transmission path by the approach in the above approach, but if in shell ground strap poor contact
In the case of, 2., 3., 4. the high current under DC-DC power supply normal work can be used as biography by the approach in the above approach
Defeated path is circulated, if output current flows through shielded layer, high-voltage wiring harness fever is may result in when output current is very big, is led
Cause security risk；If output current flows through signal wire, since signal wire typically only allows for the electric current by several amperes, signal wire
Electric current be more than probably the limit of power that can bear, cause signal wire to occur abnormal, further result in the high pressure system of vehicle
System is abnormal, if driven a vehicle at this time, it will cause the catastrophe failures of the power interruption of vehicle, are caused to the traffic safety of vehicle
It seriously affects.
Invention content
The embodiment of the present invention technical problems to be solved be to provide a kind of ground self-checking method, apparatus of high-pressure system,
High-pressure system and automobile develop to solve current electric vehicle high-voltage system to big Integrated Solution direction so that in Integrated Solution
The ground terminal of DC-DC power supply is once grounded exception, will produce security risk, and serious shadow is caused to the traffic safety of vehicle
It rings.
In order to solve the above technical problems, the embodiment provides a kind of ground self-checking method of high-pressure system, dresses
It sets, high-pressure system and automobile, the ground self-checking method of middle-and-high voltage system, is applied to dual pressure controller, including：
Receive the first voltage numerical value and the detection of second voltage data collector that first voltage data collector detects
The second voltage numerical value arrived, first voltage numerical value are the electricity between the ground terminal and the negative pole end of accumulator of DC-DC power supply
Pressure value, second voltage numerical value are the voltage value between the shell and the negative pole end of accumulator of dual pressure controller；
First voltage numerical value is compared with second voltage numerical value, obtains comparison result；
According to comparison result, when determining that DC-DC power supply ground connection is abnormal, generates control signal and be sent to vehicle control
Device processed.
Preferably, the ground self-checking method of high-pressure system as described above determines DC to DC electricity according to comparison result
Source is grounded abnormal step：
If first voltage numerical value is more than second voltage numerical value, it is determined that DC-DC power supply ground connection is abnormal.
Further, the ground self-checking method of high-pressure system as described above generates control signal and is sent to vehicle control
The step of device processed includes：
Receive the speed information that vehicle speed sensor detects；
According to speed information, generates control signal and be sent to entire car controller.
Specifically, it is concurrent to generate control signal according to speed information for the ground self-checking method of high-pressure system as described above
It send to the step of entire car controller and includes：
If speed information, which is speed, is more than zero, generates first control signal and be sent to entire car controller, the first control
Signal is for controlling vehicle limit power traveling.
Specifically, it is concurrent to generate control signal according to speed information for the ground self-checking method of high-pressure system as described above
It send to the step of entire car controller and further includes：
If speed information, which is speed, is equal to zero, generates second control signal and be sent to entire car controller, the second control
Signal stops electric current output for controlling DC-DC power supply.
Another preferred embodiment of the present invention additionally provides a kind of dual pressure controller, including：
Receiving module, for receiving the first voltage numerical value and second voltage number that first voltage data collector detects
The second voltage numerical value detected according to collector, first voltage numerical value are the ground terminal of DC-DC power supply and bearing for accumulator
Voltage value between extreme, second voltage numerical value are the voltage value between the shell and the negative pole end of accumulator of dual pressure controller；
Processing module obtains comparison result for first voltage numerical value to be compared with second voltage numerical value；
Control module, for according to comparison result, when determining that DC-DC power supply ground connection is abnormal, generating control signal simultaneously
It is sent to entire car controller.
Further, dual pressure controller as described above, control module further include：
Receiving unit, the speed information detected for receiving vehicle speed sensor；
Control unit, for according to speed information, generating control signal and being sent to entire car controller.
Specifically, dual pressure controller as described above, control unit include：
First control subelement generates first control signal and is sent to if being that speed is more than zero for speed information
Entire car controller, first control signal is for controlling vehicle limit power traveling.
Specifically, dual pressure controller as described above, control unit further include：
Second control subelement generates second control signal and is sent to if being that speed is equal to zero for speed information
Entire car controller, second control signal stop electric current output for controlling DC-DC power supply.
The another preferred embodiment of the present invention additionally provides a kind of high-pressure system, including：DC-DC power supply, electric power storage
Pond, first voltage data collector, second voltage data collector, entire car controller and dual pressure controller as described above；
Wherein, first voltage data collector respectively with the ground terminal of DC-DC power supply and the negative pole end of accumulator
Electrical connection is established, and data connection is established with dual pressure controller；
Second voltage data collector is electrically connected with the foundation of the negative pole end of the shell of dual pressure controller and accumulator respectively,
And establish data connection with dual pressure controller；
Entire car controller establishes data connection with dual pressure controller and DC-DC power supply respectively.
Specifically, high-pressure system as described above further includes：Vehicle speed sensor, vehicle speed sensor are fixedly connected with the vehicle body,
And establish data connection with dual pressure controller.
The another preferred embodiment of the present invention additionally provides a kind of automobile, including：High-pressure system as described above.
Compared with prior art, a kind of ground self-checking method, apparatus for high-pressure system that the embodiment of the present invention provides, height
Pressure system and automobile, at least have the advantages that：
In an embodiment of the present invention, the first electricity that dual pressure controller real-time reception first voltage data collector detects
The second voltage numerical value that pressure numerical value and second voltage data collector detect, wherein first voltage numerical value is that direct current turns straight
Voltage value between the ground terminal in galvanic electricity source and the negative pole end of accumulator, second voltage numerical value are the shell and storage of dual pressure controller
Voltage value between the negative pole end of battery, and first voltage numerical value and second voltage numerical value are compared, straight is turned to direct current
The ground connection situation of the ground terminal in galvanic electricity source carries out true judgement, when determining that DC-DC power supply ground connection is abnormal, generates control
Signal is simultaneously sent to entire car controller, and control vehicle takes corresponding safety measure, such as：Reduction of speed traveling stops power output
Deng reducing because DC-DC power supply is grounded abnormal, make earth current in the shielded layer or low-voltage signal line of high-voltage shielding line
Circulation and caused by security risk, while security risk is purged in safety zone convenient for driver, reduces wind of driving a vehicle
Danger, ensures the traffic safety of vehicle.
Description of the drawings
Fig. 1 is one of the flow diagram of the ground self-checking method of the high-pressure system of the present invention；
Fig. 2 is the two of the flow diagram of the ground self-checking method of the high-pressure system of the present invention；
Fig. 3 is the three of the flow diagram of the ground self-checking method of the high-pressure system of the present invention；
Fig. 4 is the structural schematic diagram of the dual pressure controller of the present invention；
Fig. 5 is the structural schematic diagram of the high-pressure system of the present invention.
Specific implementation mode
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.In the following description, such as specific configuration is provided and the specific detail of component is only
In order to help comprehensive understanding the embodiment of the present invention.It therefore, it will be apparent to those skilled in the art that can be to reality described herein
Example is applied to make various changes and modifications without departing from scope and spirit of the present invention.In addition, for clarity and brevity, it is omitted pair
The description of known function and construction.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text mean it is related with embodiment
A particular feature, structure, or characteristic includes at least one embodiment of the present invention.Therefore, occur everywhere in the whole instruction
" in one embodiment " or " in one embodiment " not necessarily refer to identical embodiment.In addition, these specific feature, knots
Structure or characteristic can in any suitable manner combine in one or more embodiments.
In various embodiments of the present invention, it should be appreciated that the size of the serial number of following each processes is not meant to execute suitable
The execution sequence of the priority of sequence, each process should be determined by its function and internal logic, the reality without coping with the embodiment of the present invention
It applies process and constitutes any restriction.
It should be understood that the terms "and/or", only a kind of incidence relation of description affiliated partner, expression can deposit
In three kinds of relationships, for example, A and/or B, can indicate：Individualism A exists simultaneously A and B, these three situations of individualism B.
In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
In embodiment provided herein, it should be appreciated that " B corresponding with A " indicates that B is associated with A, can be with according to A
Determine B.It is also to be understood that determine that B is not meant to determine B only according to A according to A, it can also be according to A and/or other information
Determine B.
Referring to Fig. 1, a preferred embodiment of the present invention provides a kind of ground self-checking method of high-pressure system, is applied to height
Pressure controller, including：
Step 1001, the first voltage numerical value and second voltage data that reception first voltage data collector detects are adopted
The second voltage numerical value that storage detects, first voltage numerical value are the negative pole end of the ground terminal and accumulator of DC-DC power supply
Between voltage value, second voltage numerical value be dual pressure controller shell and the negative pole end of accumulator between voltage value；
Step 1002, first voltage numerical value is compared with second voltage numerical value, obtains comparison result；
Step 1003, it according to comparison result, when determining that DC-DC power supply ground connection is abnormal, generates control signal and sends
To entire car controller.
In an embodiment of the present invention, the first electricity that dual pressure controller real-time reception first voltage data collector detects
The second voltage numerical value that pressure numerical value and second voltage data collector detect, wherein first voltage numerical value is that direct current turns straight
Voltage value between the ground terminal in galvanic electricity source and the negative pole end of accumulator, second voltage numerical value are the shell and storage of dual pressure controller
Voltage value between the negative pole end of battery, and first voltage numerical value and second voltage numerical value are compared, straight is turned to direct current
The ground connection situation of the ground terminal in galvanic electricity source carries out true judgement, when determining that DC-DC power supply ground connection is abnormal, generates control
Signal is simultaneously sent to entire car controller, and control vehicle takes corresponding safety measure, such as：Reduction of speed traveling stops power output
Deng reducing because DC-DC power supply is grounded abnormal, make earth current in the shielded layer or low-voltage signal line of high-voltage shielding line
Circulation and caused by security risk, while security risk is purged in safety zone convenient for driver, reduces wind of driving a vehicle
Danger, ensures the traffic safety of vehicle.
Preferably, the ground self-checking method of high-pressure system as described above, first voltage data collector not only limit to
Voltage value between the ground terminal and the negative pole end of accumulator of detection DC-DC power supply, when first voltage data collector
When to detect the high voltage component in other high-pressure systems, such as：It is hidden that above-mentioned method reduction safety can also be used in high voltage distribution box
Suffer from, reduces driving risk, ensure the traffic safety of vehicle.
Preferably, the ground self-checking method of high-pressure system as described above determines DC to DC electricity according to comparison result
Source is grounded abnormal step：
If first voltage numerical value is more than second voltage numerical value, it is determined that DC-DC power supply ground connection is abnormal.
In an embodiment of the present invention, when DC-DC power supply ground connection is normal, earth current passes through impedance minimum
Ground strap is grounded, at this time the voltage value between the ground terminal of DC-DC power supply and the negative pole end of accumulator, that is, first voltage number
Value, voltage value, that is, second voltage numerical value phase between the shell of the dual pressure controller of normal ground and the negative pole end of accumulator
Deng；When DC-DC power supply is grounded exception, earth current can not be grounded by ground strap, or only partly pass through ground strap
Ground connection, and extra earth current can be grounded by other approach, wherein the ground terminal of DC-DC power supply and electric power storage
The negative pole end in pond is connected as one of the approach of earth current ground connection, when earth current flow through the ground terminal of DC-DC power supply with
When between the negative pole end of accumulator, since impedance invariable current increases so that voltage value becomes larger, and the high voltage control of normal ground
Voltage value between the shell of device and the negative pole end of accumulator is constant, and then is more than second voltage number by working as first voltage numerical value
When value, it is determined that DC-DC power supply ground connection is abnormal, to carry out follow-up step.
Referring to Fig. 2, further, the ground self-checking method of high-pressure system as described above generates control signal and sends
Include to the step of entire car controller：
Step 2001, the speed information that vehicle speed sensor detects is received；
Step 2002 generates control signal and is sent to entire car controller according to speed information.
It in an embodiment of the present invention, can be according to the speed received after determining that DC-DC power supply is grounded exception
Information and generate control signal and be sent to entire car controller because when speed difference, the safety measure difference that can be used,
For example, when vehicle detects that DC-DC power supply ground connection is abnormal during high speed driving, if directly controlling vehicle at this time
Parking, not only vehicle itself, which stops in emergency, to cause damages to vehicle and passenger, meanwhile, can also rear of vehicle be made to drive
Member has little time to avoid and traffic accident occurs, and does not have reduction security risk not only, reduces driving risk, ensures the driving of vehicle
The effect of safety can also make increase driving risk.So different safety operations is taken according to different speed informations, ability
Really reduce security risk, reduces driving risk, ensure the traffic safety of vehicle.
Referring to Fig. 3, specifically, the ground self-checking method of high-pressure system as described above generates control according to speed information
Signal and the step of being sent to entire car controller includes：
Step 20021, it if speed information, which is speed, is more than zero, generates first control signal and is sent to full-vehicle control
Device, first control signal is for controlling vehicle limit power traveling.
In an embodiment of the present invention, if vehicle is when detecting that DC-DC power supply ground connection is abnormal, vehicle has vehicle
Speed, at this time dual pressure controller will produce first control signal and be sent to entire car controller, make vehicle control unit controls vehicle limit
Power travels, and reduces security risk in the form of reducing speed, reduces driving risk, meanwhile, enable driver with the vehicle of safety
Vehicle drive to safety zone, and is carried out inspection and maintenance by speed, avoids security risk caused by stopping in emergency, and then ensure vehicle
Traffic safety.Wherein, during vehicle control unit controls vehicle limit power traveling, specifically limited case manufacturer
Different limitation levels can be established according to speed, such as：Speed when determining that ground connection is abnormal is 90 kilometer per hours, then passes through
Limit power traveling makes speed that can reach 60 kilometer per hours.It is used to have in vehicle using other in addition to using limit power traveling
When having speed, make vehicle reduction of speed and the safety operation with certain driveability, such as vehicle is made to enter Claudication states etc.
It belongs to the scope of protection of the present invention.
Referring to Fig. 3, specifically, the ground self-checking method of high-pressure system as described above generates control according to speed information
Signal and the step of being sent to entire car controller further includes：
Step 20022, it if speed information, which is speed, is equal to zero, generates second control signal and is sent to full-vehicle control
Device, second control signal stop electric current output for controlling DC-DC power supply.
In an embodiment of the present invention, if vehicle is when detecting that DC-DC power supply ground connection is abnormal, vehicle does not have
Speed, that is, speed information is that speed is equal to zero, then can determine that vehicle is in safety zone at this time, generates the second control letter at this time
Number and be sent to entire car controller, so that DC-DC power supply is stopped electric current output, and then vehicle made to cannot be introduced into transport condition,
Driver is avoided to drive the driving risk brought there are road on the vehicle of security risk, meanwhile, also allow for driver or repair
Personnel check vehicle, repair, and restart traveling after ensureing vehicle no problem, and then ensure the traffic safety of vehicle.
Referring to Fig. 4, another preferred embodiment of the invention additionally provides a kind of dual pressure controller, including：
Receiving module 101, for receiving the first voltage numerical value and the second electricity that first voltage data collector detects
The second voltage numerical value that pressure data collector detects, first voltage numerical value are the ground terminal and accumulator of DC-DC power supply
Negative pole end between voltage value, second voltage numerical value be dual pressure controller shell and the negative pole end of accumulator between voltage
Value；
Processing module 102 obtains comparison result for first voltage numerical value to be compared with second voltage numerical value；
Control module 103, for according to comparison result, when determining that DC-DC power supply ground connection is abnormal, generating control letter
Number and be sent to entire car controller.
Further, dual pressure controller as described above, control module 103 further include：
Receiving unit 1031, the speed information detected for receiving vehicle speed sensor；
Control unit 1032, for according to speed information, generating control signal and being sent to entire car controller.
Specifically, dual pressure controller as described above, control unit 1032 include：
It is concurrent to generate first control signal if being that speed is more than zero for speed information for first control subelement 10321
It send to entire car controller, first control signal is for controlling vehicle limit power traveling.
Specifically, dual pressure controller as described above, control unit further include：
It is concurrent to generate second control signal if being that speed is equal to zero for speed information for second control subelement 10322
It send to entire car controller, second control signal stops electric current output for controlling DC-DC power supply.
The embodiment of the embodiment of the present invention mesohigh controller is the reality with the ground self-checking method of above-mentioned high-pressure system
The corresponding device of example is applied, all realization rates in the ground self-checking embodiment of the method for above-mentioned high-pressure system are suitable for the high pressure
In the embodiment of controller, it can also reach identical technique effect.
Referring to Fig. 5, another preferred embodiment of the invention additionally provides a kind of high-pressure system, including：DC to DC electricity
Source 2, accumulator 3, first voltage data collector 4, second voltage data collector 5, entire car controller 6 and as described above
Dual pressure controller 1；
Wherein, first voltage data collector 4 is negative with the ground terminal of DC-DC power supply 2 and accumulator 3 respectively
It is extreme to establish electrical connection, and establish data connection with dual pressure controller 1；
Second voltage data collector 5 is electrically connected with the foundation of the negative pole end of the shell of dual pressure controller 1 and accumulator 3 respectively
It connects, and data connection is established with dual pressure controller 1；
Entire car controller 6 establishes data connection with dual pressure controller 1 and DC-DC power supply 2 respectively.
In an embodiment of the present invention first voltage data collector 4 respectively with the ground terminal of DC-DC power supply 2 with
And the negative pole end of accumulator 3 establishes electrical connection (shown in solid in such as Fig. 5), convenient for the ground terminal of detection DC-DC power supply 2
And the voltage between the negative pole end of accumulator 3 is worth to first voltage numerical value, and the data by being established with dual pressure controller 1
Connection (as shown in phantom in Figure 5) is sent to dual pressure controller 1；
First voltage data collector 4 is electrically connected with the foundation of the negative pole end of the shell of dual pressure controller 1 and accumulator 3 respectively
It connects, second voltage numerical value is worth to convenient for detecting the voltage between the shell of dual pressure controller 1 and the negative pole end of accumulator 3,
And the data connection by being established with dual pressure controller 1 is sent to dual pressure controller 1；
Entire car controller 6 establishes data connection with dual pressure controller 1 and DC-DC power supply 2 respectively so that vehicle
Controller 6 can receive the control signal of the transmission of dual pressure controller 1, and according to control signal to vehicle and/or DC to DC electricity
Source 2 is controlled, to, according to first voltage numerical value and second voltage numerical value, determine DC to DC in dual pressure controller 1
When power supply 2 is grounded abnormal, vehicle is controlled by entire car controller 6 and/or DC-DC power supply 2 reduces security risk, is reduced
Driving risk, ensures the traffic safety of vehicle.
Referring to Fig. 5, specifically, high-pressure system as described above further includes：Vehicle speed sensor 7, vehicle speed sensor 7 and vehicle
Body is fixedly connected, and establishes data connection with dual pressure controller 1.
In an embodiment of the present invention, high-pressure system further includes vehicle speed sensor 7, and establishes data with dual pressure controller 1
Connection so that dual pressure controller 1 can generate different control signals and be sent to entire car controller 6 according to the difference of speed information,
To take different safety measures to ensure the traffic safety of vehicle.
The another preferred embodiment of the present invention additionally provides a kind of automobile, including：High-pressure system as described above.
The automobile that the embodiment of the present invention is provided includes high-pressure system as described above so that when the high-pressure system of automobile
High voltage component for example：There is ground connection exception, makes automobile storage in security risk, be unfavorable for traffic safety in DC-DC power supply 2
When, high-pressure system can be pinpointed the problems by self-test in time, and take corresponding safety measure, to ensure traffic safety so that vapour
The safety of vehicle and practicability are improved, and advantageously ensure that automobile and the safety of passenger.
In addition, the present invention can in different examples repeat reference numerals and/or letter.This repetition be in order to simplify and
Clear purpose itself does not indicate the relationship between discussed various embodiments and/or setting.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (12)
1. a kind of ground self-checking method of high-pressure system is applied to dual pressure controller, which is characterized in that including：
What the first voltage numerical value and second voltage data collector that reception first voltage data collector detects detected
Second voltage numerical value, the first voltage numerical value are the electricity between the ground terminal and the negative pole end of accumulator of DC-DC power supply
Pressure value, the second voltage numerical value are the voltage value between the shell and the negative pole end of the accumulator of dual pressure controller；
The first voltage numerical value is compared with the second voltage numerical value, obtains comparison result；
It generates control signal when determining that the DC-DC power supply ground connection is abnormal according to the comparison result and is sent to whole
Vehicle controller.
2. the ground self-checking method of high-pressure system according to claim 1, which is characterized in that according to the comparison result,
Determine that the abnormal step of the DC-DC power supply ground connection includes：
If the first voltage numerical value is more than the second voltage numerical value, it is determined that the DC-DC power supply ground connection is abnormal.
3. the ground self-checking method of high-pressure system according to claim 1, which is characterized in that the generation control signal is simultaneously
The step of being sent to entire car controller include：
Receive the speed information that vehicle speed sensor detects；
According to the speed information, generates the control signal and be sent to the entire car controller.
4. the ground self-checking method of high-pressure system according to claim 3, which is characterized in that described to be believed according to the speed
Breath generates the control signal and includes the step of being sent to entire car controller：
If the speed information, which is speed, is more than zero, generates first control signal and be sent to the entire car controller, it is described
First control signal is for controlling vehicle limit power traveling.
5. the ground self-checking method of high-pressure system according to claim 3, which is characterized in that described to be believed according to the speed
Breath generates the control signal and further includes the step of being sent to the entire car controller：
If the speed information, which is speed, is equal to zero, generates second control signal and be sent to the entire car controller, it is described
Second control signal stops electric current output for controlling the DC-DC power supply.
6. a kind of dual pressure controller, which is characterized in that including：
Receiving module (101), for receiving the first voltage numerical value and second voltage that first voltage data collector detects
The second voltage numerical value that data collector detects, the first voltage numerical value are ground terminal and the electric power storage of DC-DC power supply
Voltage value between the negative pole end in pond, the second voltage numerical value are the negative pole end of the shell and the accumulator of dual pressure controller
Between voltage value；
Processing module (102) obtains comparing knot for the first voltage numerical value to be compared with the second voltage numerical value
Fruit；
Control module (103), for being generated when determining that the DC-DC power supply ground connection is abnormal according to the comparison result
Control signal is simultaneously sent to entire car controller.
7. dual pressure controller according to claim 6, which is characterized in that the control module further includes：
Receiving unit (1031), the speed information detected for receiving vehicle speed sensor；
Control unit (1032), for according to the speed information, generating the control signal and being sent to the full-vehicle control
Device.
8. dual pressure controller according to claim 7, which is characterized in that described control unit includes：
First control subelement (10321) generates first control signal simultaneously if being that speed is more than zero for the speed information
It is sent to the entire car controller, the first control signal is for controlling vehicle limit power traveling.
9. dual pressure controller according to claim 7, which is characterized in that described control unit further includes：
Second control subelement (10322) generates second control signal simultaneously if being that speed is equal to zero for the speed information
It is sent to the entire car controller, the second control signal stops electric current output for controlling the DC-DC power supply.
10. a kind of high-pressure system, which is characterized in that including：DC-DC power supply (2), accumulator (3), first voltage data
Collector (4), second voltage data collector (5), entire car controller (6) and such as claim 6 to 9 any one of them height
Pressure controller (1)；
Wherein, the first voltage data collector (4) respectively with the ground terminal of the DC-DC power supply (2) and described
The negative pole end of accumulator (3) establishes electrical connection, and establishes data connection with the dual pressure controller (1)；
The second voltage data collector (5) respectively with the shell of the dual pressure controller (1) and the accumulator (3)
Negative pole end establishes electrical connection, and establishes data connection with the dual pressure controller (1)；
The entire car controller (6) establishes data with the dual pressure controller (1) and the DC-DC power supply (2) respectively
Connection.
11. high-pressure system according to claim 10, which is characterized in that further include：Vehicle speed sensor (7), the speed
Sensor (7) is fixedly connected with the vehicle body, and establishes data connection with the dual pressure controller (1).
12. a kind of automobile, which is characterized in that including：High-pressure system as described in claim 10 or 11.
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| CN201810562575.0A CN108749579B (en) | 2018-06-04 | 2018-06-04 | Grounding self-inspection method and device for high-voltage system, high-voltage system and automobile |
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| CN201810562575.0A CN108749579B (en) | 2018-06-04 | 2018-06-04 | Grounding self-inspection method and device for high-voltage system, high-voltage system and automobile |
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| CN108749579B (en) | 2020-07-24 |
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