CN106080209A - Vehicle high-voltage isolation control circuit - Google Patents
Vehicle high-voltage isolation control circuit Download PDFInfo
- Publication number
- CN106080209A CN106080209A CN201610541015.8A CN201610541015A CN106080209A CN 106080209 A CN106080209 A CN 106080209A CN 201610541015 A CN201610541015 A CN 201610541015A CN 106080209 A CN106080209 A CN 106080209A
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- China
- Prior art keywords
- loop
- tension
- charging
- voltage
- relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- 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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention relates to a kind of vehicle high-voltage isolation control circuit, its high tension loop on-off control unit and high-tension electricity loop state detector unit integrate, and high tension loop on-off control unit completes to be pre-charged the break-make control in loop, discharge loop, charging battery loop, charging quickly loop;High-tension electricity loop state detector unit completes high-tension electricity voltage, electric current, insulation resistance and the detection of relay status parameter.Owing to using above-mentioned structure, high tension loop parameter acquisition wire harness is concentrated in device by the present invention, decreases the personnel brought due to breakage in high tension loop parameter acquisition wire harness is arranged in battery bag or on vehicle body and gets an electric shock risk;Realizing high-low pressure Signal separator, limit due to the space of electric motor car or battery bag at present, many high-low pressure holding wires are arranged together, it is impossible to realize high-low pressure Signal separator, reduce interference each other.
Description
Technical field
The present invention relates to the high-tension electricity control field of electric automobile, particularly to vehicle high-voltage isolation control circuit.
Background technology
Electric vehicle includes hybrid vehicle and pure electric automobile, in electric vehicle, originally by oil-engine driven
The mechanical systems such as wheel, air compressor machine, steering pump, compressor of air conditioner are required for being driven by heavy-duty motor, these heavy-duty motors
Need exist for high voltage power supply and electric power is provided.High-tension electricity circuit control device is the important component of electric motor car, to realize high-tension electricity
Loop break-make controls and high-tension electricity loop parameter detects function.
It is simple that existing high-tension electricity controls circuit, although has overall low cost of manufacture, advantage easy for installation, but
It is to use common industrial relay to replace electric motor car special DC catalyst, reduces the safety coefficient of electric motor car;Do not have yet
The device detecting high tension loop voltage, electric current, insulation resistance, cannot be carried out electric motor car high tension loop state judging;
The most existing control device does not has relay status to detect device, cannot be carried out judging to the adhesion state of relay.
For the problems referred to above, it is provided that a kind of novel high-tension electricity circuit control device, it is achieved electric automobile high-voltage fulgurite is managed
While improve the electrical safety of electric automobile, and can be to high-tension electricity loop voltage, electric current, insulation resistance, relay
The parameters such as state detect.
Summary of the invention
The technical problem to be solved is to provide vehicle high-voltage isolation control circuit, improves the use of electric automobile
Electricity safety, and the parameters such as high-tension electricity loop voltage, electric current, insulation resistance, relay status can be detected.
For reaching above-mentioned purpose, the technical scheme is that, vehicle high-voltage isolation control circuit, it is characterised in that: institute
The control device stated integrates high tension loop on-off control unit and high-tension electricity loop state detector unit, high tension loop
On-off control unit completes to be pre-charged the break-make control in loop, discharge loop, charging battery loop, charging quickly loop;High-tension electricity returns
Line state detector unit completes high-tension electricity voltage, electric current, insulation resistance and the detection of relay status parameter.
Described high-tension electricity loop on-off control unit includes that being pre-charged break-make controls loop, electrion loop, high pressure
Charging battery loop, high pressure charging quickly loop;Precharge break-make controls loop by preliminary filling relay, preliminary filling resistance, negative pole relay
Composition, when car load high pressure powers on, the generation of suppression dash current, protect car load high voltage component;Electrion loop is by positive pole
Form with negative pole relay, be responsible for the connecting and disconnecting of battery system and car load high-voltage load, control in electric motor car driving process
Brake energy recovery charging in electric discharge, braking procedure;High pressure charging battery loop is made up of charging battery relay, negative pole relay,
It is responsible for during charging battery, switching on and off of charging battery loop;Continued by charging quickly relay, negative pole in high pressure charging quickly loop
Electrical equipment forms, and is responsible for during charging quickly, switching on and off of charging quickly loop.
Described high-tension electricity loop state detector unit includes that voltage detecting circuit, current detection circuit, insulation resistance are examined
Slowdown monitoring circuit connects single-chip microcomputer respectively, and single-chip microcomputer completes the conversion of the signal of voltage, electric current, insulation resistance, analogue signal is converted
For digital signal, and being sent to battery management system by communicating circuit, battery system performs corresponding according to the parameter received
Computing and operation.
Described voltage detecting circuit includes sub-resistance sampling, isolating amplifier circuit, power supply circuit composition, and resistance is adopted
The dividing potential drop effect by series resistance of the sample circuit, is converted to main circuit high pressure low-voltage and passes through isolating amplifier circuit again by dividing potential drop
On resistance, low voltage signal inputs the AD acquisition port of single-chip microcomputer after amplifying.
Described current detection circuit includes that high-power low resistance, isolating amplifier circuit form, high-power low resistance
The big electric current of high tension loop is converted to low voltage signal.The low voltage signal that low resistance is gathered by isolating amplifier circuit above
The AD acquisition port of single-chip microcomputer is inputted after amplification.
Described insulating resistor detecting circuit includes that booster circuit, PWM oscillating circuit, branch pressure voltage form, booster circuit
System 5V is upgraded to about 40V voltage, and the DC voltage inversion of about 40V is the low frequency about amplitude 40V by PWM oscillating circuit
Pwm signal, and inject in high-pressure system, the pwm signal of amplitude is converted into the pwm signal of low amplitude value by bleeder circuit, passes through
The AD mouth of single-chip microcomputer detects the amplitude size of the signal of this PWM, it is judged that the equivalence insulation between high tension loop and chassis ground
The size of resistance.
Vehicle high-voltage isolation control circuit, owing to using above-mentioned structure, it is an advantage of the current invention that: 1, returned by high-tension electricity
Road on-off control unit and high-tension electricity loop state detector unit integrate composition high-tension electricity circuit control device, can be by
High tension loop parameter acquisition wire harness concentrates in device, decreases in high tension loop parameter acquisition wire harness is arranged in battery bag or car
The personnel brought due to breakage with it get an electric shock risk;2, high-low pressure Signal separator it is capable of, at present due to electric motor car or battery
The space of bag limits, and many high-low pressure holding wires are arranged together, it is impossible to realize high-low pressure Signal separator, reduce each other
Interference;3, each state parameter of high-tension electricity is gathered by detector unit, passes to battery management system by CAN or LIN signal, electricity
Pond management system performs corresponding control strategy and method according to relevant parameter;4, Special relay for electric vehicle is used, simultaneously to continuing
Electrical appliance state detects, and improves car load safety coefficient.
Accompanying drawing explanation
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings;
Fig. 1 is vehicle high-voltage isolation control circuit structural representation of the present invention;
Fig. 2 is the structural representation of vehicle high-voltage isolation control circuit mesohigh electricity loop state detector unit of the present invention;
In FIG, 1, high-tension electricity loop on-off control unit;2, high-tension electricity loop state detector unit.
Detailed description of the invention
The present invention integrates high tension loop on-off control unit 1 and high-tension electricity loop state detector unit 2, high pressure
Loop on-off control unit 1 completes to be pre-charged the break-make control in loop, discharge loop, charging battery loop, charging quickly loop;High pressure
Electricity loop state detector unit 2 completes high-tension electricity voltage, electric current, insulation resistance and the detection of relay status parameter.
High-tension electricity loop on-off control unit 1 is capable of high pressure preliminary filling loop, electrion loop, high-tension electricity charging battery
Loop, the break-make in high pressure charging quickly loop control function.Precharge break-make controls loop by preliminary filling relay, preliminary filling resistance, negative
Pole relay composition.Precharge loop is when car load high pressure powers on, it is possible to the generation of suppression dash current, protects car load high-voltage section
Part.Electrion loop is made up of positive pole and negative pole relay, is responsible for the connecting and disconnecting of battery system and car load high-voltage load,
In electric motor car driving process, in electric discharge, braking procedure, Brake energy recovery charging is completed by this loop.High pressure charging battery loop
It is made up of charging battery relay, negative pole relay, is responsible for during charging battery, switching on and off of charging battery loop.High pressure
Charging quickly loop is made up of charging quickly relay, negative pole relay, is responsible for during charging quickly, the connection in charging quickly loop and
Disconnect.
High-tension electricity loop state detector unit 2 mainly completes the measurement of high tension loop state parameter, such as battery system electricity
The detection of pressure, electric current, insulation resistance and relay status.High-tension electricity loop state detector unit 2 comprise voltage detecting circuit,
Current detection circuit, insulating resistor detecting circuit, communicating circuit, power supply circuits and single-chip microcomputer composition.Voltage detecting circuit can
Complete the collection of six road high-tension electricities, four high voltage collection point, road location arrangements on the relay contacts, by the survey of contact voltage
Measure the judgement of each relay status.Voltage detecting circuit is by sub-resistance sampling, isolating amplifier circuit, power supply circuit group
Become, the resistance sampling circuit dividing potential drop effect by series resistance, main circuit high pressure is converted to low-voltage.Isolating amplifier circuit will
On divider resistance, low voltage signal inputs the AD acquisition port of single-chip microcomputer after amplifying, and isolating amplifier circuit achieves battery system high pressure
With the electrical isolation of car load low pressure, the normal work that power supply circuits are isolating amplifier circuit provides power supply.Current detection circuit is complete
Becoming the detection of electric motor car charging or discharging current, current detection circuit is by high-power low resistance, isolating amplifier circuit, power supply group
Becoming, the big electric current of high tension loop is converted to low voltage signal by high-power low resistance.Isolating amplifier circuit is by low resistance
The low voltage signal that face gathers inputs the AD acquisition port of single-chip microcomputer after amplifying, isolating amplifier circuit achieve battery system high pressure with
The electrical isolation of car load low pressure, the normal work that power supply circuits are isolating amplifier circuit provides power supply.Use the electricity of low resistance
Stream acquisition mode, relative to the current acquisition mode of use current Hall moral, has low cost, precision height, is prone to the excellent of layout
Point.
Insulation resistance uses Low frequency signal injection method, injects low frequency and hand between high tension loop and ground, electric vehicle body chassis
Stream signal, and form loop by high tension loop, insulation resistance, chassis ground, by detecting the amplitude of low-frequency ac signal
Judge the insulation resistance between high tension loop and chassis ground.Insulating resistor detecting circuit is shaken electricity by booster circuit, PWM
Road, branch pressure voltage composition.System 5V is upgraded to about 40V voltage by booster circuit, and PWM oscillating circuit is by the unidirectional current of about 40V
Pressure inversion is the low frequency pwm signal about amplitude 40V, and injects in high-pressure system, and the pwm signal of amplitude is turned by bleeder circuit
Turn to the pwm signal of low amplitude value, detected the amplitude size of the signal of this PWM by the AD mouth of single-chip microcomputer, it is judged that high tension loop with
The size of the equivalent insulation resistance between chassis ground.Single-chip minimum system completes the signal of voltage, electric current, insulation resistance
Conversion, analogue signal is converted into digital signal, and is sent to battery management system by communicating circuit, battery system according to
The parameter received performs corresponding computing and operation.
Major part electric motor car high-tension electricity loop on-off control unit 1 and high-tension electricity loop state detector unit 2 are separately at present
Arranging, the detection of some electric motor car high-pressure electricity loop state parameter is completed by battery management system.High pressure conditions parameter
Signal acquisition point position all selects in on-off control unit, owing to the space of electric motor car or battery bag limits, connects break-make control
In high-voltage signal wire harness between unit processed and state detection unit is exposed to battery bag or in electric motor car, if abrasion causes
High-voltage signal line exposes, it will cause the risk that personnel get an electric shock.
Above in conjunction with accompanying drawing, the present invention is exemplarily described, it is clear that the present invention implements not by aforesaid way
Restriction, as long as have employed the various improvement that technical solution of the present invention is carried out or the most improved that directly apply to other occasion,
All within protection scope of the present invention.
Claims (1)
1. vehicle high-voltage isolation control circuit, it is characterised in that: described control device high tension loop on-off control unit and
High-tension electricity loop state detector unit integrates, high tension loop on-off control unit complete be pre-charged loop, discharge loop,
Charging battery loop, the break-make in charging quickly loop control;High-tension electricity loop state detector unit completes high-tension electricity voltage, electric current, absolutely
Edge resistance and the detection of relay status parameter;
Described high-tension electricity loop on-off control unit includes that being pre-charged break-make controls loop, electrion loop, high pressure trickle charge
Electricity loop, high pressure charging quickly loop;Precharge break-make controls loop and is made up of preliminary filling relay, preliminary filling resistance, negative pole relay,
When car load high pressure powers on, the generation of suppression dash current, protect car load high voltage component;Electrion loop is by positive pole and negative pole
Relay forms, and is responsible for the connecting and disconnecting of battery system and car load high-voltage load, controls to discharge in electric motor car driving process, make
Brake energy recovery charging during Dong;High pressure charging battery loop is made up of charging battery relay, negative pole relay, is responsible for slowly
In charging process, switching on and off of charging battery loop;High pressure charging quickly loop is by charging quickly relay, negative pole relay group
Become, be responsible for during charging quickly, switching on and off of charging quickly loop;
Described high-tension electricity loop state detector unit includes voltage detecting circuit, current detection circuit, insulation resistance detection electricity
Road connects single-chip microcomputer respectively, and single-chip microcomputer completes the conversion of the signal of voltage, electric current, insulation resistance, and analogue signal is converted into number
Word signal, and it is sent to battery management system by communicating circuit, battery system performs corresponding fortune according to the parameter received
Calculate and operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610541015.8A CN106080209A (en) | 2016-07-11 | 2016-07-11 | Vehicle high-voltage isolation control circuit |
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CN201610541015.8A CN106080209A (en) | 2016-07-11 | 2016-07-11 | Vehicle high-voltage isolation control circuit |
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CN106080209A true CN106080209A (en) | 2016-11-09 |
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CN201610541015.8A Pending CN106080209A (en) | 2016-07-11 | 2016-07-11 | Vehicle high-voltage isolation control circuit |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107621565A (en) * | 2017-10-23 | 2018-01-23 | 宁德时代新能源科技股份有限公司 | High voltage detection circuit, detector, battery device and vehicle |
CN109177732A (en) * | 2018-08-28 | 2019-01-11 | 湖南金杯新能源发展有限公司 | The power control circuit of electric vehicle battery management system |
CN109683587A (en) * | 2018-12-17 | 2019-04-26 | 华人运通控股有限公司 | A kind of separate type high pressure monitoring method and device |
CN110109007A (en) * | 2018-02-01 | 2019-08-09 | 宁德时代新能源科技股份有限公司 | Method and device for acquiring insulation resistance values of inner side and outer side of relay |
Citations (3)
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CN103399571A (en) * | 2013-07-31 | 2013-11-20 | 东方电气集团东风电机有限公司 | Detecting device and method applied to high-voltage circuit of electromobile motor controller |
CN104750000A (en) * | 2015-03-23 | 2015-07-01 | 奇瑞汽车股份有限公司 | High voltage electric loop control device for electric automobile |
CN205202759U (en) * | 2015-10-19 | 2016-05-04 | 北汽福田汽车股份有限公司 | Power battery package, High voltage power distribution system and have its electric automobile |
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2016
- 2016-07-11 CN CN201610541015.8A patent/CN106080209A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103399571A (en) * | 2013-07-31 | 2013-11-20 | 东方电气集团东风电机有限公司 | Detecting device and method applied to high-voltage circuit of electromobile motor controller |
CN104750000A (en) * | 2015-03-23 | 2015-07-01 | 奇瑞汽车股份有限公司 | High voltage electric loop control device for electric automobile |
CN205202759U (en) * | 2015-10-19 | 2016-05-04 | 北汽福田汽车股份有限公司 | Power battery package, High voltage power distribution system and have its electric automobile |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107621565A (en) * | 2017-10-23 | 2018-01-23 | 宁德时代新能源科技股份有限公司 | High voltage detection circuit, detector, battery device and vehicle |
CN107621565B (en) * | 2017-10-23 | 2024-03-22 | 宁德时代新能源科技股份有限公司 | High voltage detection circuit, detector, battery device and vehicle |
CN110109007A (en) * | 2018-02-01 | 2019-08-09 | 宁德时代新能源科技股份有限公司 | Method and device for acquiring insulation resistance values of inner side and outer side of relay |
US10996251B2 (en) | 2018-02-01 | 2021-05-04 | Contemporary Amperex Technology Co., Limited | Method and device for obtaining internal side, external side insulation resistances of relay, and battery management system |
CN109177732A (en) * | 2018-08-28 | 2019-01-11 | 湖南金杯新能源发展有限公司 | The power control circuit of electric vehicle battery management system |
CN109177732B (en) * | 2018-08-28 | 2020-11-17 | 湖南金杯新能源发展有限公司 | Power supply control circuit of electric vehicle battery management system |
CN109683587A (en) * | 2018-12-17 | 2019-04-26 | 华人运通控股有限公司 | A kind of separate type high pressure monitoring method and device |
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Application publication date: 20161109 |