CN108016311A - The high-pressure system and its control method of a kind of new-energy automobile - Google Patents
The high-pressure system and its control method of a kind of new-energy automobile Download PDFInfo
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- CN108016311A CN108016311A CN201711236200.7A CN201711236200A CN108016311A CN 108016311 A CN108016311 A CN 108016311A CN 201711236200 A CN201711236200 A CN 201711236200A CN 108016311 A CN108016311 A CN 108016311A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims description 42
- 238000004378 air conditioning Methods 0.000 claims description 26
- 239000002826 coolant Substances 0.000 claims description 21
- 230000006641 stabilisation Effects 0.000 claims description 14
- 238000011105 stabilization Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 14
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical group [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
-
- 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
-
- 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
-
- 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
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- 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)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of high-pressure system and its control method of new-energy automobile, wherein, high-pressure system includes：Power battery, for exporting high-voltage electricity；Vehicular charger, for being charged at a slow speed for power battery using extraneous high-voltage electricity；Trickle charge relay, is connected with power battery and Vehicular charger respectively, for controlling the trickle charge circuit of power battery by disconnecting and closing；Quick charger, for carrying out quick charge using extraneous high-voltage electricity for power battery；Fast charge relay, is connected with power battery and quick charger respectively, for controlling the fast charge circuit of power battery by disconnecting and closing；The positive relay of master that is connected with the cathode of power battery and bear relay with the master that the anode of power battery is connected；The high voltage electric equipment being connected between main positive relay and main negative relay.High voltage equipment is divided into three categories by the present invention, is controlled respectively with three relays, and independently of each other, the association between three major types high voltage equipment influences to be reduced to minimum.
Description
Technical field
The present invention relates to technical field of new energy, more particularly to a kind of high-pressure system of new-energy automobile and its control
Method.
Background technology
The problems such as with environmental degradation, greenhouse effects and lack of energy, is increasingly serious, and people increasingly pay close attention to new energy
Development.And the daily traffic trip of people, and can't do without automobile, under this background, new-energy automobile increasingly by people it is of interest with
Receive.
There are many high voltage components on new-energy automobile, these high voltage components are divided by operating mode, including are charged and discharged；It is different
Under working condition, there is different high voltage components to work.Thus can one high-pressure control device of demand, to adjust and control
The distribution of component working and control power supply under different operating modes.
The content of the invention
The technical problems to be solved by the invention are, there is provided the high-pressure system and its controlling party of a kind of new-energy automobile
Method, can adjust and control the high voltage equipment under different operating modes to work, while meet vehicle operation demand, ensure vehicle safety
Reliably.
In order to solve the above technical problem, the present invention provides a kind of high-pressure system of new-energy automobile, including：
Power battery, for exporting high-voltage electricity；
Vehicular charger, for being charged at a slow speed for the power battery using extraneous high-voltage electricity；
Trickle charge relay, is connected with the power battery and the Vehicular charger respectively, for being controlled by disconnecting and closing
Make the trickle charge circuit of the power battery；
Quick charger, for carrying out quick charge using extraneous high-voltage electricity for the power battery；
Fast charge relay, is connected with the power battery and the quick charger respectively, for being controlled by disconnecting and closing
Make the fast charge circuit of the power battery；
The positive relay of master that is connected with the cathode of the power battery and with the master that the anode of the power battery is connected bear after
Electric appliance；
It is connected to the positive relay of the master and the master bears high voltage electric equipment between relay.
Wherein, the high-pressure system further includes preliminary filling relay, is connected in parallel on the positive relay both ends of the master, for by disconnected
Open and close are closed to control the preliminary filling circuit of the power battery, and the preliminary filling relay is also associated with preliminary filling resistance, for being classified
Raise the output voltage of the power battery.
Wherein, when the preliminary filling relay and the master bear relay closure, the output voltage of the power battery first rises
To first voltage, the positive relay of the master is then closed, the output voltage of the power battery is raised to by the first voltage
Two voltages.
Wherein, the high voltage electric equipment includes following any or any combination：
Electric machine, the electric machine include motor, and the high-voltage electricity for using the power battery to provide carries for vehicle
For driving power；
Direct-flow inverter, the high-voltage electricity for the power battery to be provided are converted into low-voltage DC, are vehicle low pressure electricity consumption
Equipment provides power supply；
Coolant heater, for the coolant heating for the power battery；
Air-conditioning heater, for participating in air-conditioning heating process, makes air-conditioning blow out hot wind；
Compressor of air conditioner, for participating in air conditioner refrigerating process, makes air-conditioning blowing cold air, while to cold in the cooling circuit of air-conditioning
But liquid freezes.
Wherein, under trickle charge operating mode, the fast charge relay remains off, under fast charge operating mode, the trickle charge after
Electric appliance remains off.
Wherein, under trickle charge or fast charge operating mode, the electric machine is in idle condition.
The present invention also provides a kind of control method of the high-pressure system of new-energy automobile, the high-pressure system includes：Power
Battery；Vehicular charger；The trickle charge relay being connected respectively with the power battery and the Vehicular charger；Quick charge
Machine；The fast charge relay being connected respectively with the power battery and the quick charger；With the cathode phase of the power battery
Even the positive relay of master and bear relay with the master that the anode of the power battery is connected；And it is connected to the positive relay of the master
Device and the master bear the high voltage electric equipment between relay, and the control method includes：According to the operating mode of execution, pass through disconnection
The connection of the Vehicular charger and the power battery is controlled with the trickle charge relay is closed, or passes through open and close of breaking
The fast charge relay is closed to control the connection of the quick charger and the power battery, or by disconnecting and closing institute
Main positive relay is stated to control the connection of the high voltage electric equipment and the power battery.
Wherein, in execution during high-voltage electricity operating mode, preliminary filling relay and main negative relay are closed first, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Then the main positive relay of closure, makes high voltage electric equipment terminal voltage be lifted by first voltage
It is raised to second voltage；After high voltage electric equipment end voltage stabilization is in second voltage, preliminary filling relay is disconnected, wherein, preliminary filling
Relay, is connected in parallel on the positive relay both ends of the master；When performing lower high-voltage electricity operating mode, high voltage electric equipment is set to reduce electric power
To power-off threshold values, main positive relay and main negative relay are disconnected.
Wherein, when performing trickle charge heating cycle, the upper high-voltage electricity operating mode is first carried out, then in high voltage electric equipment
Direct-flow inverter and coolant heater are started to work, and are heated for power battery, are reclosed trickle charge relay, Vehicular charger is opened
Beginning work, be power battery charging and be direct-flow inverter and coolant heater power supply；It is first when exiting trickle charge heating cycle
First high voltage electric equipment electric power is reduced until electric current is 0A, then disconnects main positive relay；Then reduce charge power until
Electric current is 0A, stops Vehicular charger work, then disconnects trickle charge relay and main negative relay.
Wherein, when performing trickle charge insulation operating mode, the trickle charge heating cycle is adopted as heir, maintains main positive relay and trickle charge relay
Device closes, and is then turned off main negative relay, stops the trickle charge to power battery, be direct-flow inverter and cooling by Vehicular charger
Liquid heater provides electric energy, maintains the temperature of power battery；When exiting trickle charge insulation operating mode, high voltage electric equipment is reduced first and is used
Electrical power is until electric current is 0A, and then stopping Vehicular charger working, then disconnects main positive relay and trickle charge relay.
Wherein, when performing trickle charge fast-refrigerating operating mode, trickle charge operating mode is initially entered, then judges whether to need quickly to make
It is cold, if so, then making the electric power of high voltage electric equipment remain zero；Then preliminary filling relay is closed, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment terminal voltage by first voltage lifting
To second voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnects preliminary filling relay；Direct-flow inverter,
Air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；Exit trickle charge fast-refrigerating operating mode
Flow it is identical with the flow for exiting trickle charge heating cycle.
Wherein, when performing fast charge heating cycle, the upper high-voltage electricity operating mode is first carried out, then in high voltage electric equipment
Direct-flow inverter and coolant heater are started to work, and are heated for power battery, are reclosed fast charge relay, quick charger is opened
Beginning work, be power battery charging and be direct-flow inverter and coolant heater power supply；It is first when exiting fast charge heating cycle
First high voltage electric equipment electric power is reduced until electric current is 0A, then disconnects main positive relay；Then reduce charge power until
Electric current is 0A, stops quick charger work, then disconnects fast charge relay and main negative relay.
Wherein, when performing fast charge fast-refrigerating operating mode, fast charge operating mode is initially entered, then judges whether to need quickly to make
It is cold, if so, then making the electric power of high voltage electric equipment remain zero；Then preliminary filling relay is closed, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment terminal voltage by first voltage lifting
To second voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnects preliminary filling relay；Direct-flow inverter,
Air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；Exit fast charge fast-refrigerating operating mode
Flow it is identical with the flow for exiting fast charge heating cycle.
The beneficial effect of the embodiment of the present invention is：High voltage equipment is divided into three categories, respectively with three relay controls
System, independently of each other.Certain a kind of failure, can individually disconnect its controlled relay of institute, work without influencing other high voltage equipments, and three
The association of class high voltage equipment influences to be reduced to minimum, and especially charging equipment is separated with electrical equipment, will be reduced as far as
The two influencing each other and contacting, and after ensureing a certain functional component failure, other functional components are unaffected or influence smaller.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of composition schematic diagram of the high-pressure system of one new-energy automobile of the embodiment of the present invention.
Fig. 2 is the current direction schematic diagram under upper high-voltage electricity operating mode in the embodiment of the present invention one.
Fig. 3 is the current direction schematic diagram under trickle charge operating mode in the embodiment of the present invention one.
Fig. 4 is the current direction schematic diagram under trickle charge heating cycle in the embodiment of the present invention one.
Fig. 5 is to keep the temperature the current direction schematic diagram under operating mode in trickle charge in the embodiment of the present invention one.
Fig. 6 is the current direction schematic diagram under trickle charge fast-refrigerating operating mode in the embodiment of the present invention one.
Fig. 7 is the current direction schematic diagram under fast charge operating mode in the embodiment of the present invention one.
Fig. 8 is the current direction schematic diagram under fast charge heating cycle in the embodiment of the present invention one.
Fig. 9 is the current direction schematic diagram under fast charge fast-refrigerating operating mode in the embodiment of the present invention one.
Embodiment
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
Refer to shown in Fig. 1, the embodiment of the present invention one provides a kind of high-pressure system of new-energy automobile, including：
Power battery 4, for exporting high-voltage electricity；
Vehicular charger 1, for being charged at a slow speed for the power battery 4 using extraneous high-voltage electricity；
Trickle charge relay 11, is connected with the power battery 4 and the Vehicular charger 1, for by disconnecting and closing respectively
To control the trickle charge circuit of the power battery 4；
Quick charger 2, for carrying out quick charge using extraneous high-voltage electricity for the power battery 4；
Fast charge relay 12, is connected with the power battery 4 and the quick charger 2, for by disconnecting and closing respectively
To control the fast charge circuit of the power battery 4；
The positive relay 13 of master being connected with the cathode of the power battery 4 and the master being connected with the anode of the power battery 4
Negative relay 14；
It is connected to the positive relay 13 of the master and the master bears high voltage electric equipment 3 between relay 14.
The embodiment of the present invention is controlled the high-tension apparatus category in new-energy automobile by corresponding relay respectively, will be closed
Connection influence is preferably minimized, certain a kind of high-tension apparatus breaks down, and can individually disconnect corresponding relay without influencing other high pressures
Equipment works, and especially trickle charge equipment, fast fill device are separated with high voltage electric equipment, will be reduced as far as the mutual shadow of the two
Ring and contact.
Further, the present embodiment further includes preliminary filling relay 15, positive 13 both ends of relay of the master is connected in parallel on, for leading to
Cross and disconnect and close to control the preliminary filling circuit of the power battery 4.The preliminary filling relay 15 is also associated with preliminary filling resistance 16,
The output voltage of the power battery 4 is raised for being classified.Assuming that the High voltage output voltage of power battery 4 is second voltage U2,
When wanting closing relay, preliminary filling relay 15 and main negative relay 14 are first closed, voltage is first raised to first voltage U1（U1<
U2）, main positive relay 13 is reclosed, voltage is raised to second voltage U2 by first voltage U1, so as to avoid voltage direct by 0V
U2 is raised to, damages electrical equipment.
In the present embodiment, high voltage electric equipment 3 includes following any or any combination：
Electric machine（DCU）, the electric machine includes motor, for use the high-voltage electricity that the power battery 4 provides for
Vehicle provides driving power；
Direct-flow inverter（DCDC）, the high-voltage electricity for the power battery 4 to be provided is converted into low-voltage DC, is that vehicle is low
Press electrical equipment to provide power supply, including charge for vehicle 12V batteries；
Coolant heater（HVH）, for the coolant heating for the power battery 4, so as to ensure that power battery 4 is in suitable
Under suitable temperature environment；
Air-conditioning heater（PTC）, for participating in air-conditioning heating process, air-conditioning is blown out hot wind, so as to adjust passenger cabin environment
Temperature；
Compressor of air conditioner（ECP）, for participating in air conditioner refrigerating process, enable air-conditioning blowing cold air, so as to adjust passenger cabin environment
Temperature；Freeze at the same time to the coolant in the cooling circuit of air-conditioning.Since the coolant in air-conditioning cooling circuit can be with moving
Coolant in the cooling circuit of power battery 4 exchanges so that ECP adjusts the coolant temperature of power battery 4, and then adjusts dynamic
The temperature of power battery 4, makes power battery 4 keep suitable temperature, especially needs to carry out fast-refrigerating in the overheat of power battery 4
When, ECP will play an important role.
Below in conjunction with Fig. 2-Fig. 9 controls to the high-pressure system of new-energy automobile of the embodiment of the present invention under different operating modes respectively
Mode processed is specifically described.Wherein, each relay icon shown in Fig. 2-Fig. 9 is used to represent that each relay is implemented in the present invention
Position and connection relation in example high-pressure system, are not offered as the shape being opened or closed in the case where performing or closing corresponding operating mode
State.
Firstly the need of explanation, in the present embodiment, either mechanical key starts or starts without key, key gear
Include key off gears, ACC gears, key on gears, key start（Or it is called Ready）Gear.
In addition, the charging operating mode described in the present embodiment includes trickle charge operating mode and fast charge operating mode, when trickle charge is charged, do not allow to close
Fast charge relay 12 is closed, reason is：（1）Prevent electrical potential difference, burn 2 charging ports；（2）Prevent charging current mistake
Greatly, battery is burnt.Similarly, when fast charge charges, also do not allow to close trickle charge relay 11.
When key gear is in Ready states, vehicle upper high pressure, and be in wheeled state, therefore during charging not
Ready states can be entered.
Electric machine DCU is not allowed also to work under charging operating mode（In idle condition）, reason is that charging wire is also at this time
It is connected on vehicle, prevents electric machine DCU to be misused, vehicle pulls charging wire traveling, brings security risk.
1st, high pressure power-on and power-off
It refer to shown in Fig. 2, during upper high-voltage electricity, key gear is from key off to key on, into Ready states：
Preliminary filling relay 15 and main negative relay 14 are closed first, and 3 terminal voltage of high voltage electric equipment is lifted to first voltage by 0V
U1；--- --- power battery forms preliminary filling and returns high voltage electric equipment --- main negative relay --- preliminary filling relay power battery
Road；
Then the main positive relay 13 of closure, 3 terminal voltage of high voltage electric equipment are lifted to second voltage U2 by first voltage U1；
After 3 terminal voltage stabilization of high voltage electric equipment is in second voltage U2, preliminary filling relay 15 can be disconnected.
Current direction at this time is as denoted by the arrows in fig. 2.
In lower high-voltage electricity, vehicle is in Ready states, and key gear leads positive relay at this time by key on to key off
Device 13 and main negative relay 14 have closed, other relays disconnect；High voltage electric equipment 3 first reduces load, reduces electric power,
When electric power is reduced to power-off threshold values P0, main positive relay 13 and main negative relay 14, cutoff high electricity power supply are disconnected.
2nd, trickle charge
As shown in figure 3, key gear, under key off states, all relays are in off-state, by Vehicular charger 1
Connect, Vehicular charger 1 can be opened or stop charging, and the charge power of control trickle charge, then close trickle charge relay
11 start to work with main negative relay 14, Vehicular charger 1, trickle charge circuit（Vehicular charger --- trickle charge relay --- is dynamic
Vehicular charger forms trickle charge circuit with power battery --- main negative relay ---）In have a high-tension current, arrow in current direction such as Fig. 3
Shown in head, trickle charge charging starts, and the output voltage of power battery 4 can be raised to second voltage U2 at this time.As it was previously stated, charging electricity
Pressure is all slow lifting, will not damage component because output voltage lifting is too fast.
Need, when key off gears stop trickle charge, to reduce the charge power of Vehicular charger 1 first, make trickle charge circuit
In charging current be reduced to 0A；It is then turned off trickle charge relay 11 and main negative relay 14, cut-out trickle charge circuit.
Key gear can also carry out trickle charge under key on states, at this time can be in the car using amusement audio-video system, instrument
The components such as table can also work normally, but cannot be introduced into Ready states.Just allow high-voltage electricity, key in Ready states
Not upper high pressure under on states, i.e., main positive relay 13, main negative relay 14 are off, until key gear is in
Ready states, main positive relay 13 and main negative relay 14 just close.
The unlatching of trickle charge and stopping flow and the unlatching and stopping of trickle charge under foregoing key off gears are flowed under Key on gears
Cheng Xiangtong, details are not described herein again.
Due to duty requirements during trickle charge, the demand of heating is had.During trickle charge, by allowing direct-flow inverter（DCDC）And cooling
Liquid heater（HVH）Work, so as to be heated to power battery 4, keep power battery 4 to be in convenient temperature, with
Keep battery cell performance.The performance of battery cell is understood variation with temperature and is changed, when especially temperature is relatively low, battery cell
Performance can become very poor, in addition can not charge or discharge, power battery 4 is carried out heating make battery cell be in conveniently temperature
Degree, keeps its performance, realizes reliable and stable charge function.The temperature spot threshold values that power battery 4 discharges is less than charging temperature point
Threshold values, when environment temperature is less than the discharge temp point threshold values, power battery 4 can be damaged, can not worked normally.
Under trickle charge heating cycle, Vehicular charger 1 is connected first, is prepared for charging；Then upper high-voltage electricity is performed
Flow：Preliminary filling relay 15 and main negative relay 14 are closed, 3 voltage of high voltage electric equipment is lifted to first voltage U1 by 0V；Again
The main positive relay 13 of closure, 3 terminal voltage of high voltage electric equipment are lifted to second voltage U2 by first voltage U1；When high voltage electric is set
Standby 3 terminal voltage stabilizations can disconnect preliminary filling relay 15 after second voltage U2.Power battery 4 starts externally to discharge at this time, high
Press electrical equipment DCDC and HVH to start to work, heated for power battery 4.
When needing trickle charge, closure trickle charge relay 11, Vehicular charger 1 is started to work, and is charged for power battery 4 and high pressure
Electrical equipment DCDC, HVH is powered（It can proceed with work to maintain the temperature of power battery 4）, at this time power battery 4 stop
Externally electric discharge.
Current direction under above-mentioned operating mode is as shown by the arrows in figure 4.
When needing to close heating and stop charging, high voltage electric equipment is set to reduce power first until electric current is 0A, then is broken
Drive main positive relay 13；Then the charge power of power battery 4 is reduced until electric current is 0A, stopping Vehicular charger 1 works, then
Disconnect trickle charge relay 11 and main negative relay 14.
When environment temperature is relatively low, and after power battery 4 is fully charged, some situations may require that into holding mode.Such as：Slowly
It is longer to fill the charging interval, often has and is all remained attached to whole night in charge condition, electricity full of rear charging wire on Vehicular charger 1, is
Recharge and provide certain condition；And environment temperature is relatively low, to ensure that user intact can use car second day early morning, vehicle is kept
Compared with dominance energy, vehicle can be made to be in holding mode, keep power battery 4 that there is preferably discharge performance.
When trickle charge insulation operating mode is opened, the electricity of power battery 4 is just full of, the intact connection of charging equipment, is adopted as heir foregoing slow
Heating cycle is filled, maintains main positive relay 13 and trickle charge relay 11 to close, main negative relay 14 is then turned off, stops to power
The charging of battery 4（Power battery, which after being full of overcharge, can damage battery）, Vehicular charger 1 for high voltage electric equipment DCDC,
HVH provides electric energy, maintains its work, keeps power battery 4 to be in preference temperature.In current direction such as Fig. 5 under above-mentioned operating mode
Arrow shown in.
Such as need close holding mode, equally first reduce high voltage electric plant capacity until electric current be 0A, then stop car
Carry charger 1 to work, then disconnect main positive relay 13 and trickle charge relay 11.
Due to duty requirements during trickle charge, the demand of fast-refrigerating is had.Fast-refrigerating needs air-conditioning in the embodiment of the present invention
Compressor of air conditioner ECP and air-conditioning heater PTC participate in work, while also need to DCDC participate in work.
As it was previously stated, the performance of battery cell is understood variation with temperature and is changed, and when especially temperature is higher, battery cell
It may overheat and battery cell performance is affected, overheat is serious even to cause battery catches fire, have security risk.And
Power battery 4 can produce amount of heat in charging, and battery cell temperature can rise or even overheat, just need to power at this time
Battery 4 radiates, and a kind of mode of quick heat radiating is to battery fast-refrigerating.
When opening fast-refrigerating, trickle charge operating mode is initially entered, then judges whether to need fast-refrigerating, if so, then making height
Press electrical equipment 3（DCU, DCDC, HVH, PTC, ECP etc.）Electric power remain zero；Then preliminary filling relay 15 is closed, it is high
Pressure 3 terminal voltage of electrical equipment is lifted to U1 by 0V；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is by U1 liftings
To U2；Treat that 3 terminal voltage stabilization of high voltage electric equipment after U2, can disconnect preliminary filling relay 15.DCDC, PTC, ECP are sent out at this time
Go out power request start-up operation, realize fast-refrigerating function.Current direction under above-mentioned operating mode is as indicated by the arrows in fig. 6.
Flow when needing to close fast-refrigerating is identical with the foregoing flow closed when heating and stopping charging, herein no longer
Repeat.
3rd, fast charge
When key gear is in key off states, all relays are in off-state, and quick charger 2 is connected, electricity
Pond management system（BMS）It can open or stop charging, and the charge power of control fast charge；Then 12 He of fast charge relay is closed
Main negative relay 14.Do not allow also to charge at this time, so fast charge not yet starts, fast charge circuit（Quick charger --- fast charge after
--- quick charger forms fast charge circuit to power battery --- main negative relay --- to electric appliance）In there is no high-tension current.Afterwards,
BMS starts to work, and has high-tension current in fast charge circuit, as shown by the arrows in Figure 7, fast charge charging starts current direction, moves at this time
Power battery terminal voltage can slowly be raised to U2.
Need, when key off gears stop fast charge, to reduce the charge power of quick charger 2 first, make fast charge circuit
In charging current be reduced to 0A；It is then turned off fast charge relay 12 and main negative relay 14, cut-out fast charge circuit.
Key gear can also carry out fast charge under key on states.It is similar to foregoing trickle charge, fast charge under key on gears
Unlatching and stop flow and fast charge under key off gears unlatching and stopping flow it is identical, details are not described herein again.
Due to duty requirements during fast charge, the demand of heating is had.Before unlatching, each relay is in off-state.First
Quick charger 2 is connected, is prepared for charging；Then upper high-voltage electricity flow is performed：Close preliminary filling relay 15 and master is negative
Relay 14,3 voltage of high voltage electric equipment are lifted to first voltage U1 by 0V；Main positive relay 13 is reclosed, high voltage electric is set
Standby 3 terminal voltages are lifted to second voltage U2 by first voltage U1；When 3 terminal voltage stabilization of high voltage electric equipment second voltage U2 it
Afterwards, preliminary filling relay 15 can be disconnected.Power battery 4 starts externally to discharge at this time, and high voltage electric equipment DCDC and HVH start work
Make, heated for power battery 4.
When needing fast charge, closure fast charge relay 12, quick charger 2 is started to work, and is charged for power battery 4 and high pressure
Electrical equipment DCDC, HVH is powered（It can proceed with work to maintain the temperature of power battery 4）, at this time power battery 4 stop
Externally electric discharge.
When needing to close heating and stop charging, high voltage electric equipment is set to reduce power first until electric current is 0A, then is broken
Drive main positive relay 13；Then the charge power of power battery 4 is reduced until electric current is 0A, stopping quick charger 2 works, then
Disconnect fast charge relay 12 and main negative relay 14.
It is different from trickle charge, without holding mode under fast charge.
Due to duty requirements during fast charge, the demand of fast-refrigerating is had.Fast-refrigerating needs air-conditioning in the embodiment of the present invention
Compressor of air conditioner ECP and air-conditioning heater PTC participate in work, while also need to DCDC participate in work.
When opening fast-refrigerating, fast charge operating mode is initially entered, then judges whether to need fast-refrigerating, if so, then making height
Press electrical equipment 3（DCU, DCDC, HVH, PTC, ECP etc.）Electric power remain zero；Then preliminary filling relay 15 is closed, it is high
Pressure 3 terminal voltage of electrical equipment is lifted to U1 by 0V；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is by U1 liftings
To U2；Treat that 3 terminal voltage stabilization of high voltage electric equipment after U2, can disconnect preliminary filling relay 15.DCDC, PTC, ECP are sent out at this time
Go out power request start-up operation, realize fast-refrigerating function.Current direction under above-mentioned operating mode is as shown in the arrow in Fig. 9.
Flow when needing to close fast-refrigerating is identical with the foregoing flow closed when heating and stopping charging, herein no longer
Repeat.
According to the above description, that high voltage equipment is divided into three is big for the high-pressure system of new-energy automobile of the embodiment of the present invention
Class controls respectively, i.e.,：Trickle charge equipment（Vehicular charger 1）, fast fill device（Quick charger 2）, other high voltage electric equipment 3
（Such as DCU, DCDC, HVH, PTC, ECP etc.）.Power battery 4 is energy storage and output center, is not attributed to above-mentioned three classes and sets
It is standby.Three classes high voltage equipment, is controlled, independently of each other with three relays respectively.Certain a kind of failure, can individually disconnect it and be controlled
Relay, without influencing the work of other high voltage equipments, such as Vehicular charger 1 breaks down, then disconnects trickle charge relay 11,
Other high voltage equipments may continue to work.This kind classification control mode maximum benefit be：The association of three classes high voltage equipment
Influence is reduced to minimum, and especially charging equipment is separated with electrical equipment, is reduced as far as influencing each other and contacting for the two,
After ensureing a certain functional component failure, other functional components are unaffected as much as possible or influence smaller.
Corresponding to the embodiment of the present invention one, the embodiment of the present invention two provides a kind of control of the high-pressure system of new-energy automobile
Method, the high-pressure system include：Power battery；Vehicular charger；Respectively with the power battery and the Vehicular charger
Connected trickle charge relay；Quick charger；The fast charge relay being connected respectively with the power battery and the quick charger
Device；The positive relay of master that is connected with the cathode of the power battery and bear relay with the master that the anode of the power battery is connected
Device；And it is connected to the positive relay of the master and the master bears high voltage electric equipment between relay, the control method bag
Include：According to the operating mode of execution, the Vehicular charger and the power are controlled by disconnecting and closing the trickle charge relay
The connection of battery, or control the quick charger and the power battery by disconnecting and closing the fast charge relay
Connection, or control the high voltage electric equipment and the power battery by disconnecting and closing the positive relay of the master
Connection.
Wherein, in execution during high-voltage electricity operating mode, preliminary filling relay and main negative relay are closed first, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Then the main positive relay of closure, makes high voltage electric equipment terminal voltage be lifted by first voltage
It is raised to second voltage；After high voltage electric equipment end voltage stabilization is in second voltage, preliminary filling relay is disconnected, wherein, preliminary filling
Relay, is connected in parallel on the positive relay both ends of the master；When performing lower high-voltage electricity operating mode, high voltage electric equipment is set to reduce electric power
To power-off threshold values, main positive relay and main negative relay are disconnected.
Wherein, under key gear is in key off states or key on states perform trickle charge operating mode when, closure trickle charge after
Electric appliance and main negative relay, Vehicular charger are started to work, and trickle charge is carried out to power battery；When exiting trickle charge operating mode, drop first
The charge power of low Vehicular charger is reduced to 0A up to charging current, is then turned off trickle charge relay and main negative relay.
Wherein, when performing trickle charge heating cycle, the upper high-voltage electricity operating mode is first carried out, then in high voltage electric equipment
Direct-flow inverter and coolant heater are started to work, and are heated for power battery, are reclosed trickle charge relay, Vehicular charger is opened
Beginning work, be power battery charging and be direct-flow inverter and coolant heater power supply；It is first when exiting trickle charge heating cycle
First high voltage electric equipment electric power is reduced until electric current is 0A, then disconnects main positive relay；Then reduce charge power until
Electric current is 0A, stops Vehicular charger work, then disconnects trickle charge relay and main negative relay.
Wherein, when performing trickle charge insulation operating mode, the trickle charge heating cycle is adopted as heir, maintains main positive relay and trickle charge relay
Device closes, and is then turned off main negative relay, stops the trickle charge to power battery, be direct-flow inverter and cooling by Vehicular charger
Liquid heater provides electric energy, maintains the temperature of power battery；When exiting trickle charge insulation operating mode, high voltage electric equipment is reduced first and is used
Electrical power is until electric current is 0A, and then stopping Vehicular charger working, then disconnects main positive relay and trickle charge relay.
Wherein, when performing trickle charge fast-refrigerating operating mode, trickle charge operating mode is initially entered, then judges whether to need quickly to make
It is cold, if so, then making the electric power of high voltage electric equipment remain zero；Then preliminary filling relay is closed, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment terminal voltage by first voltage lifting
To second voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnects preliminary filling relay；Direct-flow inverter,
Air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；Exit trickle charge fast-refrigerating operating mode
Flow it is identical with the flow for exiting trickle charge heating cycle.
Wherein, under key gear is in key off states or key on states perform fast charge operating mode when, closure fast charge after
Electric appliance and main negative relay, battery management system are started to work, and control quick charger carries out fast charge to power battery；Exit fast
When filling operating mode, first reduce quick charger charge power until charging current be reduced to 0A, be then turned off fast charge relay
With main negative relay.
Wherein, when performing fast charge heating cycle, the upper high-voltage electricity operating mode is first carried out, then in high voltage electric equipment
Direct-flow inverter and coolant heater are started to work, and are heated for power battery, are reclosed fast charge relay, quick charger is opened
Beginning work, be power battery charging and be direct-flow inverter and coolant heater power supply；It is first when exiting fast charge heating cycle
First high voltage electric equipment electric power is reduced until electric current is 0A, then disconnects main positive relay；Then reduce charge power until
Electric current is 0A, stops quick charger work, then disconnects fast charge relay and main negative relay.
Wherein, when performing fast charge fast-refrigerating operating mode, fast charge operating mode is initially entered, then judges whether to need quickly to make
It is cold, if so, then making the electric power of high voltage electric equipment remain zero；Then preliminary filling relay is closed, makes high voltage electric equipment
Terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment terminal voltage by first voltage lifting
To second voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnects preliminary filling relay；Direct-flow inverter,
Air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；Exit fast charge fast-refrigerating operating mode
Flow it is identical with the flow for exiting fast charge heating cycle.
Operation principle and corresponding technique effect in relation to the present embodiment refer to the explanation of the embodiment of the present invention one, herein
Repeat no more.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
Enclose, therefore equivalent variations made according to the claims of the present invention, it is still within the scope of the present invention.
Claims (12)
- A kind of 1. high-pressure system of new-energy automobile, it is characterised in that including：Power battery, for exporting high-voltage electricity；Vehicular charger, for being charged at a slow speed for the power battery using extraneous high-voltage electricity；Trickle charge relay, is connected with the power battery and the Vehicular charger respectively, for being controlled by disconnecting and closing Make the trickle charge circuit of the power battery；Quick charger, for carrying out quick charge using extraneous high-voltage electricity for the power battery；Fast charge relay, is connected with the power battery and the quick charger respectively, for being controlled by disconnecting and closing Make the fast charge circuit of the power battery；The positive relay of master that is connected with the cathode of the power battery and with the master that the anode of the power battery is connected bear after Electric appliance；It is connected to the positive relay of the master and the master bears high voltage electric equipment between relay.
- 2. high-pressure system according to claim 1, it is characterised in that further include preliminary filling relay, be connected in parallel on the master just Relay both ends, for controlling the preliminary filling circuit of the power battery by disconnecting and closing, the preliminary filling relay also connects Preliminary filling resistance is connected to, the output voltage of the power battery is raised for being classified.
- 3. high-pressure system according to claim 1, it is characterised in that the high voltage electric equipment include it is following any or Any combination：Electric machine, the electric machine include motor, and the high-voltage electricity for using the power battery to provide carries for vehicle For driving power；Direct-flow inverter, the high-voltage electricity for the power battery to be provided are converted into low-voltage DC, are vehicle low pressure electricity consumption Equipment provides power supply；Coolant heater, for the coolant heating for the power battery；Air-conditioning heater, for participating in air-conditioning heating process, makes air-conditioning blow out hot wind；Compressor of air conditioner, for participating in air conditioner refrigerating process, makes air-conditioning blowing cold air, while to cold in the cooling circuit of air-conditioning But liquid freezes.
- 4. high-pressure system according to claim 1, it is characterised in that under trickle charge operating mode, the fast charge relay is kept Off-state, under fast charge operating mode, the trickle charge relay remains off.
- 5. high-pressure system according to claim 3, it is characterised in that under trickle charge or fast charge operating mode, the electric machine In idle condition.
- 6. a kind of control method of the high-pressure system of new-energy automobile, it is characterised in that the high-pressure system includes：Power electric Pond；Vehicular charger；The trickle charge relay being connected respectively with the power battery and the Vehicular charger；Quick charger； The fast charge relay being connected respectively with the power battery and the quick charger；It is connected with the cathode of the power battery Lead positive relay and bear relay with the master that the anode of the power battery is connected；And be connected to the positive relay of the master and The master bears the high voltage electric equipment between relay, and the control method includes：According to the operating mode of execution, pass through open and close of breaking The trickle charge relay is closed to control the connection of the Vehicular charger and the power battery, or by disconnecting and closing institute Fast charge relay is stated to control the connection of the quick charger and the power battery, or by the way that the master is opened or closed Positive relay controls the connection of the high voltage electric equipment and the power battery.
- 7. control method according to claim 6, it is characterised in that in execution during high-voltage electricity operating mode, close preliminary filling first Relay and main negative relay, make high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Then the main positive relay of closure, High voltage electric equipment terminal voltage is set to be lifted to second voltage by first voltage；When high voltage electric equipment end voltage stabilization is in the second electricity After pressure, preliminary filling relay is disconnected；When performing lower high-voltage electricity operating mode, high voltage electric equipment is set to reduce electric power to powering off valve Value, disconnects main positive relay and main negative relay.
- 8. control method according to claim 7, it is characterised in that when performing trickle charge heating cycle, be first carried out described Upper high-voltage electricity operating mode, then the direct-flow inverter in high voltage electric equipment and coolant heater start-up operation, are power battery Heating, recloses trickle charge relay, and Vehicular charger is started to work, and is power battery charging and is direct-flow inverter and cooling Liquid heating installation power supply；When exiting trickle charge heating cycle, high voltage electric equipment electric power is reduced first until electric current is 0A, then is broken Drive main positive relay；Then charge power is reduced until electric current is 0A, and stopping Vehicular charger working, then disconnects trickle charge relay With main negative relay.
- 9. control method according to claim 8, it is characterised in that when performing trickle charge insulation operating mode, adopt as heir the trickle charge Heating cycle, maintains main positive relay and trickle charge relay closure, is then turned off main negative relay, stops to the slow of power battery Fill, provide electric energy for direct-flow inverter and coolant heater by Vehicular charger, maintain the temperature of power battery；Exit trickle charge When keeping the temperature operating mode, high voltage electric equipment electric power is reduced first until electric current is 0A, then stopping Vehicular charger working, then Disconnect main positive relay and trickle charge relay.
- 10. control method according to claim 8, it is characterised in that when performing trickle charge fast-refrigerating operating mode, initially enter Trickle charge operating mode, then judges whether to need fast-refrigerating, if so, then making the electric power of high voltage electric equipment remain zero；So Preliminary filling relay is closed afterwards, high voltage electric equipment terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, makes height Pressure electrical equipment terminal voltage is lifted to second voltage by first voltage；Treat high voltage electric equipment end voltage stabilization second voltage it Afterwards, preliminary filling relay is disconnected；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out Fast-refrigerating；The flow for exiting trickle charge fast-refrigerating operating mode is identical with the flow for exiting trickle charge heating cycle.
- 11. control method according to claim 7, it is characterised in that when performing fast charge heating cycle, be first carried out described Upper high-voltage electricity operating mode, then the direct-flow inverter in high voltage electric equipment and coolant heater start-up operation, are power battery Heating, recloses fast charge relay, and quick charger is started to work, and is power battery charging and is direct-flow inverter and cooling Liquid heating installation power supply；When exiting fast charge heating cycle, high voltage electric equipment electric power is reduced first until electric current is 0A, then is broken Drive main positive relay；Then charge power is reduced until electric current is 0A, and stopping quick charger working, then disconnects fast charge relay With main negative relay.
- 12. control method according to claim 11, it is characterised in that perform fast charge fast-refrigerating operating mode when, first into Enter fast charge operating mode, then judge whether to need fast-refrigerating, if so, then making the electric power of high voltage electric equipment remain zero； Then preliminary filling relay is closed, high voltage electric equipment terminal voltage is lifted to first voltage by 0V；Main positive relay is reclosed, is made High voltage electric equipment terminal voltage is lifted to second voltage by first voltage；Treat high voltage electric equipment end voltage stabilization in second voltage Afterwards, preliminary filling relay is disconnected；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, into Row fast-refrigerating；The flow for exiting fast charge fast-refrigerating operating mode is identical with the flow for exiting fast charge heating cycle.
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Effective date of registration: 20211229 Address after: 511434 No. 36, Longying Road, Shilou Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: GAC AION New Energy Vehicle Co.,Ltd. Address before: 510000 23 building, Cheng Yue mansion 448-458, Dongfeng Middle Road, Yuexiu District, Guangzhou, Guangdong. Patentee before: GUANGZHOU AUTOMOBILE GROUP Co.,Ltd. |