CN108058596A - A kind of high-pressure system of new-energy automobile and corresponding control method - Google Patents
A kind of high-pressure system of new-energy automobile and corresponding control method Download PDFInfo
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- CN108058596A CN108058596A CN201711237936.6A CN201711237936A CN108058596A CN 108058596 A CN108058596 A CN 108058596A CN 201711237936 A CN201711237936 A CN 201711237936A CN 108058596 A CN108058596 A CN 108058596A
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- power battery
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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
- B60L1/00—Supplying electric power to auxiliary equipment of 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
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
-
- 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
- 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
- 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
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
- B60L2210/12—Buck converters
-
- 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
Abstract
The present invention provides a kind of high-pressure system of new-energy automobile and corresponding control method, wherein, high-pressure system includes：Power battery；Quick charger；Fast charge relay is connected respectively with the power battery and the quick charger；The positive relay of master that is connected with the anode of the power battery and bear relay with the master that the cathode of the power battery is connected；It is connected to the positive relay of the master and the master bears electric machine between relay, the electric machine includes motor；It is connected in parallel on the positive relay of the master and the master bears multiple high voltage electric equipment between relay, each high voltage electric equipment connects use electrical relay accordingly respectively.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 influence between three categories high voltage equipment is reduced to minimum.
Description
Technical field
The present invention relates to the high-pressure systems of technical field of new energy more particularly to a kind of new-energy automobile and corresponding
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 being 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, provide a kind of high-pressure system of new-energy automobile and corresponding control
Method can adjust and control the high voltage equipment under different operating modes to work, while meet vehicle operation demand, ensure vehicle peace
It is complete reliable.
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；
Quick charger, for carrying out quick charge using extraneous high-voltage electricity for the power battery；
Fast charge relay is connected respectively with the power battery and the quick charger, for being controlled by disconnecting and being closed
Make the fast charge circuit of the power battery；
The positive relay of master that is connected with the anode of the power battery and with the master that the cathode of the power battery is connected bear after
Electric appliance；
It is connected to the positive relay of the master and the master bears electric machine between relay, the electric machine includes electronic
Machine, the high-voltage electricity for the power battery to be used to provide provide driving power for vehicle；
It is connected in parallel on the positive relay of the master and the master bears multiple high voltage electric equipment between relay, each high voltage electric equipment
Series connection is accordingly with electrical relay, the high pressure being used for electrical relay by disconnecting and being closed that it is controlled to be connected respectively
The high voltage supply circuit of electrical equipment.
Wherein, the high-pressure system further includes preliminary filling relay, is connected in parallel on the positive relay both ends of the master, disconnected for passing through
Open and close close 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, the high voltage electric equipment includes：
Vehicular charger, for being charged at a slow speed for the power battery using extraneous high-voltage electricity；
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 being heated for the coolant of 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, the electrical relay includes：
First uses electrical relay, connects with Vehicular charger, for the high pressure by disconnecting and being closed to control Vehicular charger
Current supply circuit；
Second uses electrical relay, connects with direct-flow inverter, for the high pressure by disconnecting and being closed to control direct-flow inverter
Current supply circuit；
3rd uses electrical relay, connects with coolant heater, for controlling coolant heater by disconnecting and being closed
High voltage supply circuit；
4th uses electrical relay, connects with air-conditioning heater, for the high pressure by disconnecting and being closed to control air-conditioning heater
Current supply circuit；
5th uses electrical relay, connects with compressor of air conditioner, for the high pressure by disconnecting and being closed to control compressor of air conditioner
Current supply circuit.
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；Quick charger；The fast charge relay being connected respectively with the power battery and the quick charger；With the power
The positive relay of master and bear relay with the master that the cathode of the power battery is connected that the anode of battery is connected；It is connected to described
Main positive relay and the master bear the electric machine between relay, and the electric machine includes motor；With the master just after
Electric appliance be connected with electrical relay and be connected in parallel on the positive relay of the master and the master bears multiple high pressures between relay and uses
Electric equipment, each high voltage electric equipment is connected respectively uses electrical relay accordingly, and the control method includes：According to the work of execution
Condition, by disconnect and be closed the fast charge relay control the connection of the quick charger and the power battery or
By disconnecting and being closed the positive relay of the master and described the high voltage electric equipment and the power are controlled with electrical relay
The connection of battery.
Wherein, in execution during high-voltage electricity operating mode, it is closed bears relay with electrical relay, preliminary filling relay and master first, make
High voltage electric equipment terminal voltage is lifted to first voltage by 0V；Then main positive relay is closed, makes high voltage electric equipment terminal voltage
Second voltage is lifted to by first voltage；After high voltage electric equipment end voltage stabilization is in second voltage, preliminary filling relay is disconnected
Device, 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, make high voltage electric equipment
Electric power is reduced to outage threshold, is disconnected with electrical relay, main positive relay and main negative relay.
Wherein, when performing comfortable part fault condition, the electric power of high voltage electric equipment is reduced to outage threshold, then is disconnected
The high voltage electric equipment to break down uses electrical relay, main positive relay and main negative relay is kept to be closed, control motor dress
It puts and vehicle offer driving force is provided.
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, reclose main positive relay and the first electricity consumption after
Electric appliance, Vehicular charger are started to work, and be power battery charging and are that direct-flow inverter and coolant heater are powered；It exits
During trickle charge heating cycle, high voltage electric equipment electric power is reduced first until electric current is 0A；Then reduce charge power until
Electric current is 0A, disconnects first with electrical relay, and stopping Vehicular charger working, then disconnects second to connect with direct-flow inverter and use
Electrical relay, the 3rd to connect with coolant heater bear relay with electrical relay, main positive relay and master.
Wherein, when performing trickle charge heat preservation operating mode, the trickle charge heating cycle is adopted as heir, is then turned off leading positive relay and master is negative
Relay stops the trickle charge to power battery, keeps first to use electrical relay with electrical relay, the 3rd with electrical relay, second
It is closed, provides electric energy for direct-flow inverter and coolant heater by Vehicular charger, maintain the temperature of power battery；It exits slow
Fill heat preservation operating mode when, first reduce high voltage electric equipment electric power until electric current be 0A, then stop Vehicular charger work,
First is disconnected again uses electrical relay with electrical relay, the 3rd with electrical relay, second.
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, the electric power of high voltage electric equipment is then made to remain zero；Then be closed preliminary filling relay, second with electrical relay,
Connect with air-conditioning heater the 4th with electrical relay, connect with compressor of air conditioner the 5th with electrical relay and master bear relay
Device makes high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment end electric
Pressure is lifted to second voltage by first voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnect preliminary filling after
Electric appliance；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；It exits
The flow of trickle charge fast-refrigerating operating mode 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 the second electricity consumption relay connected with direct-flow inverter
Device, the 3rd to connect with coolant heater electrical relay, main positive relay；Then charge power is reduced 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, the electric power of high voltage electric equipment is then made to remain zero；Then second is closed to heat with electrical relay, with air-conditioning
Device series connection the 4th with electrical relay, connect with compressor of air conditioner the 5th with electrical relay, preliminary filling relay and master bear relay
Device makes high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment end electric
Pressure is lifted to second voltage by first voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnect preliminary filling after
Electric appliance；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；It exits
The flow of fast charge fast-refrigerating operating mode is identical with the flow for exiting fast charge heating cycle.
The advantageous 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 influence of class high voltage equipment is 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；Soon
Fill device is individually controlled by fast charge relay, is controlled when its failure by fast charge relay, on other electrical equipments without influence；
The heat insulation functions component such as trickle charge equipment and high voltage electric equipment is placed on in all the way, to battery system when can effectively reduce heat preservation
Overcharge influence, individually into a minor loop when making heat preservation, other component is not had an impact；Consider that Vehicular charger is reversible
To by consuming cell system voltage, 220V household voltages are externally provided, also possesses high voltage electric device attribute, vehicle is owned
High voltage electric equipment is attributed to one kind, is controlled by same high-voltage relay, it may have reasonability, it is real convenient for control and policing feature
It is existing；Electric machine is separated as driving traveling part with comfortable part and charging unit, can when comfortable part failure or charging unit failure
To isolate failure part by disconnecting corresponding relay, and it is unlikely to influence electric machine, maintains vehicle to the full extent
Driveability, this occurs vehicle high voltage component failure with very big advantage, is ensureing vehicle driving in the process of moving
There is great role in mobility；During high voltage electric equipment fault, directly it individually can be isolated, avoid using other high pressures
Electric equipment impacts, and realizes point-to-point independent isolation.
Description of the drawings
It 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, the accompanying drawings in the following description is 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 comfortable part fault condition in the embodiment of the present invention one.
Fig. 4 is the current direction schematic diagram under trickle charge operating mode in the embodiment of the present invention one.
Fig. 5 is the current direction schematic diagram under trickle charge heating cycle in the embodiment of the present invention one.
Fig. 6 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. 7 is the current direction schematic diagram under trickle charge fast-refrigerating operating mode in the embodiment of the present invention one.
Fig. 8 is the current direction schematic diagram under fast charge operating mode in the embodiment of the present invention one.
Fig. 9 is the current direction schematic diagram under fast charge heating cycle in the embodiment of the present invention one.
Figure 10 is the current direction schematic diagram under fast charge fast-refrigerating operating mode in the embodiment of the present invention one.
Specific embodiment
The explanation of following embodiment is refer to the attached drawing, can be to the specific embodiment implemented to the example present invention.
It 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；
Quick charger 2, for carrying out quick charge using extraneous high-voltage electricity for the power battery 4；
Fast charge relay 12 is connected respectively with the power battery 4 and the quick charger 2, for passing through disconnection and closure
To control the fast charge circuit of the power battery 4；
The positive relay 13 of master being connected with the anode of the power battery 4 and the master being connected with the cathode of the power battery 4
Negative relay 14；
It is connected to the positive relay 13 of the master and the master bears electric machine 5 between relay 14, the electric machine 5 includes
Motor, the high-voltage electricity for the power battery 4 to be used to provide provide driving power for vehicle；
It is connected in parallel on the positive relay 13 of the master and the master bears multiple high voltage electric equipment 3 between relay 14, each high pressure is used
Electric equipment is connected respectively accordingly with electrical relay, described to be used to by disconnecting and being closed it be controlled to be connected with electrical relay
The high voltage supply circuit Vehicular charger 1 of high voltage electric equipment be used to carry out for the power battery 4 using extraneous high-voltage electricity
It charges at a slow speed.
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 influences to be 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 separates fast fill device with high voltage electric equipment, will be reduced as far as influencing each other and contacting for the two.
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 the preliminary filling circuit for disconnecting and being closed to control the power battery 4.The preliminary filling relay 15 is also associated with preliminary filling resistance 16,
For being classified the output voltage for raising the power battery 4.Assuming that the High voltage output voltage of power battery 4 is second voltage U2,
When wanting closing relay, first it is closed preliminary filling relay 15, bears relay 14 with electrical relay and master, voltage is made first to be raised to first
Voltage U1（U1<U2）, main positive relay 13 is reclosed, voltage is made to be raised to second voltage U2 by first voltage U1, so as to avoid electricity
Pressure is directly raised to U2 by 0V, damages electrical equipment.
In the present embodiment, high voltage electric equipment 3 includes：
Vehicular charger（AC-CHR）, for being charged at a slow speed for the power battery using extraneous high-voltage electricity；
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
Electrical equipment is pressed to provide power supply, including charging for vehicle 12V batteries；
Coolant heater（HVH）, for being heated for the coolant of 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 enable to blow 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 simultaneously 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 the coolant temperature of power battery 4 is adjusted in ECP, 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.
Correspondingly, according to high voltage electric equipment 3, the present embodiment is included with electrical relay：
First uses electrical relay 31, connects with Vehicular charger, for the height by disconnecting and being closed to control Vehicular charger
Press current supply circuit；
Second uses electrical relay 32, connects with direct-flow inverter, for the height by disconnecting and being closed to control direct-flow inverter
Press current supply circuit；
3rd uses electrical relay 33, connects with coolant heater, for controlling coolant heater by disconnecting and being closed
High voltage supply circuit；
4th uses electrical relay 34, connects with air-conditioning heater, for the height by disconnecting and being closed to control air-conditioning heater
Press current supply circuit；
5th uses electrical relay 34, connects with compressor of air conditioner, for the height by disconnecting and being closed to control compressor of air conditioner
Press current supply circuit.
Below in conjunction with Fig. 2-Figure 10 respectively to the high-pressure system of new-energy automobile of the embodiment of the present invention under different operating modes
Control mode is specifically described.Wherein, Fig. 2-each relay icon shown in Fig. 10 is used to represent each relay in the present invention
Position and connection relation in embodiment high-pressure system are not offered as 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）It prevents electrical potential difference, burns 2 charging ports；（2）Prevent charging current mistake
Greatly, battery is burnt.Similarly, when fast charge charges, also do not allow to be closed trickle charge relay 11.
When key gear is in Ready states, vehicle has gone up high pressure, and 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（It is in idle condition）, reason is that charging wire is also at this time
It is connected on vehicle, electric machine DCU is prevented 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：
Second is closed first uses electrical relay with electrical relay the 34, the 5th with electrical relay the 33, the 4th with electrical relay the 32, the 3rd
35, preliminary filling relay 15 and main negative relay 14 are reclosed, 3 terminal voltage of high voltage electric equipment is lifted to first voltage U1 by 0V；
Power battery --- preliminary filling relay --- uses electrical relay（Second is used with the electrical relay the 33, the 4th of electrical relay the 32, the 3rd
The electrical relay 35 of electrical relay the 34, the 5th）--- power battery forms pre- high voltage electric equipment --- main negative relay ---
Fill circuit；
Then main positive relay 13 is closed, 3 terminal voltage of high voltage electric equipment is 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 is by key on to key off, at this time the second electricity consumption
The electrical relay the 34, the 5th of electrical relay the 33, the 4th electrical relay 35 of relay the 32, the 3rd, main positive relay 13 and master
Negative relay 14 has been closed, other relays disconnect；High voltage electric equipment 3 first reduces load, reduces electric power, for use electric work
When rate is reduced to outage threshold P0, main positive relay 13 and main negative relay 14, cutoff high electricity power supply are first disconnected, then is divided
It Duan Kai not the second use electrical relay 35 of electrical relay the 34, the 5th of electrical relay the 33, the 4th of electrical relay the 32, the 3rd.
In the present embodiment, by high voltage electric equipment 3（AC-CHR、DCDC、HVH、PTC、ECP）Be classified as comfortable part, i.e., these
Component is for ensureing vehicle comfort property, if breaking down, vehicle traveling still has driveability.Specifically, when these relax
When suitable part breaks down, vehicle has completed high-voltage electricity, in traveling or power battery discharge condition, reduces high pressure first at this time
For the electric power of electrical equipment 3 to outage threshold P1, be then turned off the high voltage electric equipment to break down uses electrical relay（Example
Such as, if coolant heater NVH breaks down, the 3rd use electrical relay 33 of series connection with it is disconnected）, keep main positive relay
Device 13 and main negative relay 14 are closed, electric machine 5（DCU）It can still work normally, driving force is provided for vehicle.Electric current stream at this time
To as indicated by the arrows in fig. 3.
2nd, trickle charge
As shown in figure 4, key gear, under key off states, all relays are in off-state, and Vehicular charger is connected
It connects, Vehicular charger can be opened or stop charging and control the charge power of trickle charge, be then closed first and use electrical relay
31st, main positive relay 13 and main negative relay 14, Vehicular charger 1 are started to work, trickle charge circuit（Vehicular charger --- first
With electrical relay, --- --- Vehicular charger forms trickle charge circuit to power battery --- main negative relay --- to main positive relay）
In have a high-tension current, as shown by the arrows in Figure 4, trickle charge charging starts current direction, and the output voltage of power battery 4 can be lifted at this time
Rise to second voltage U2.As previously mentioned, charging voltage is all slow lifting, will not when output voltage lifting is too fast damage portion
Part.
It needs, when key off gears stop trickle charge, to reduce the charge power of Vehicular charger first, make in trickle charge circuit
Charging current be reduced to 0A；It is slow with electrical relay 31, main positive relay 13 and main negative relay 14, cut-out to be then turned off first
Fill 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 are just closed.
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）It works, so as to be heated to power battery 4, power battery 4 is kept 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 it is very poor in addition can not charge or discharge, to power battery 4 carry out heating make battery cell be in conveniently temperature
Degree, keeps its performance, realizes reliable and stable charge function.The temperature point threshold that power battery 4 discharges is less than charging temperature point
Threshold value, when environment temperature is less than the discharge temp point threshold value, power battery 4 can be damaged, can not worked normally.
Under trickle charge heating cycle, Vehicular charger is connected first, is prepared to charge；Then upper high-tension current is performed
Journey：Be closed second with electrical relay the 32, the 3rd electrical relay 33, preliminary filling relay 15 and main negative relay 14, high voltage electric
3 voltage of equipment is lifted to first voltage U1 by 0V；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is by the first electricity
Pressure U1 is lifted to second voltage U2；After 3 terminal voltage stabilization of high voltage electric equipment is in second voltage U2, preliminary filling relay can be disconnected
Device 15.Power battery 4 starts externally to discharge at this time, and high voltage electric equipment DCDC and HVH start to work, and is heated for power battery 4.
When needing trickle charge, the first relay 31 is closed, Vehicular charger is started to work, and is charged and high pressure for power battery 4
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 illustrated by arrows 5.
Need close heat and stop charge when, make first high voltage electric equipment reduce power until electric current be 0A, disconnect
Second uses the electrical relay 33 of electrical relay the 32, the 3rd；Then reduce power battery 4 charge power until electric current be 0A, stop
Only Vehicular charger works, then disconnects the first relay 31, main positive relay 13 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 time, often has whole night all in charging situation, and electricity is remained attached to full of rear charging wire on Vehicular charger, for again
Charging provides certain condition；And environment temperature is relatively low, is to ensure that user can be intact with vehicle second day early morning, vehicle keep compared with
Dominance energy can make vehicle be in holding mode, and power battery 4 is kept to have preferably discharge performance.
When trickle charge heat preservation 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, is then turned off leading positive relay 13 and main negative relay 14, stops the charging to power battery 4（Power battery
It carries out overcharging after being full of that battery can be damaged）, first is kept with the electrical relay 32 of electrical relay 31, second, the 3rd electricity consumption relay
Device 33 is closed, and Vehicular charger provides electric energy for high voltage electric equipment DCDC, HVH, maintains its work, is kept at power battery 4
In preference temperature.Current direction under above-mentioned operating mode is as indicated by the arrows in fig. 6.
If you need to close holding mode, equally first reduce high voltage electric plant capacity until electric current be 0A, then stop vehicle
It carries charger 1 to work, then disconnects first and use the electrical relay 33 of electrical relay the 32, the 3rd of electrical relay 31, second.
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 previously mentioned, 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 made to be affected, overheat is serious even to cause battery catches fire, have security risk.And
Power battery 4 can generate amount of heat when charging, and battery cell temperature, which can rise, even to be overheated, and is just needed to power at this time
Battery 4 radiates, and a kind of mode of rapid cooling 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, the are closed
Two bear relay 14, high voltage electric equipment 3 with the electrical relay the 34, the 5th of electrical relay the 32, the 4th electrical relay 35 and master
Terminal voltage is lifted to U1 by 0V；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is lifted to U2 by U1；Treat high pressure
3 terminal voltage stabilization of electrical equipment can disconnect preliminary filling relay 15 after U2.DCDC, PTC, ECP send power request and open at this time
Fast-refrigerating function is realized in beginning work.Current direction under above-mentioned operating mode is as depicted by the arrows in figure 7.
Flow when needing to close fast-refrigerating is with closing stream when heating and stopping charging under foregoing trickle charge heating cycle
Cheng Xiangtong, details are not described herein again.
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 manages system（BMS）It can open or stop charging and control the charge power of fast charge；Then it is closed 12 He of fast charge relay
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 8, fast charge charging starts current direction, moves at this time
Power battery terminal voltage can slowly be raised to U2.
It needs, 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, under key on states, main positive relay 13 and main negative
Relay 14 is in off-state.It is similar to foregoing trickle charge, the unlatching of fast charge and stopping flow and key under key on gears
The unlatching of fast charge is identical with stopping flow under off gears, and 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 to charge；Then upper high-voltage electricity flow is performed：Second is closed with electrical relay 32, the
Three are lifted to first voltage with electrical relay 33, preliminary filling relay 15 and main negative relay 14,3 voltage of high voltage electric equipment by 0V
U1；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is lifted to second voltage U2 by first voltage U1；Work as high pressure
3 terminal voltage stabilization of electrical equipment can disconnect preliminary filling relay 15 after second voltage U2.Power battery 4 starts externally at this time
Electric discharge, high voltage electric equipment DCDC and HVH start to work, and are heated for power battery 4.
When needing fast charge, fast charge relay 12 is closed, 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.
Current direction under above-mentioned operating mode is as shown in the arrow in Fig. 9.
When needing to close heating and stop charging, high voltage electric equipment is made to reduce power first until electric current is 0A, then is broken
Second is opened with the electrical relay 33 of electrical relay the 32, the 3rd, main positive relay 13；Then the charge power of power battery 4 is reduced
Until electric current is 0A, stops quick charger 2 and work, 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 electricity
Machine device 5, high voltage electric equipment 3（AC-CHR, DCDC, HVH, PTC, ECP etc.）Electric power remain zero；Then it is closed
Two bear relay 14 with the electrical relay the 34, the 5th of electrical relay the 32, the 4th electrical relay 35, preliminary filling relay 15 and master,
3 terminal voltage of high voltage electric equipment is lifted to U1 by 0V；Main positive relay 13 is reclosed, 3 terminal voltage of high voltage electric equipment is lifted by U1
It is raised to U2；Treat that 3 terminal voltage stabilization of high voltage electric equipment after U2, can disconnect preliminary filling relay 15.DCDC, PTC, ECP at this time
Power request start-up operation is sent, realizes fast-refrigerating function.Current direction under above-mentioned operating mode is as indicated by the arrows in figure 10.
Flow when needing to close fast-refrigerating is with closing stream when heating and stopping charging under foregoing fast charge heating cycle
Cheng Xiangtong, details are not described herein again.
According to the above description, high voltage equipment is divided into three greatly by the high-pressure system of new-energy automobile of the embodiment of the present invention
Class controls respectively, i.e.,：One kind is high voltage electric equipment（Such as AC-CHR, DCDC, HVH, PTC, ECP etc.）, one kind be that fast charge is set
It is standby（Quick charger 2）, one kind be electric machine（It is classified as driving traveling part）.High voltage electric equipment is classified as comfortable part, i.e., these
Component is for ensureing vehicle comfort property, if breaking down, vehicle traveling still has driveability, wherein, Vehicular charger
（AC-CHR）Both power battery charging can also be consumed the electric of power battery and externally be discharged, therefore can also treated as
It is high voltage electric equipment.Power battery 4 is energy storage and output center, is not attributed to above-mentioned three kind equipment.Three classes high-voltage electricity is set
It is standby, it is controlled respectively with three relays, independently of each other.Certain a kind of failure can individually disconnect its controlled relay of institute, without influencing
Other high voltage equipments work, such as quick charger 2 breaks down, then disconnects fast charge relay 11, near to the driving of motor
Without influence, other high voltage equipments may continue to work.It is connected between each high voltage electric equipment using parallel way, to reduce
Influence during failure to each other.Each high voltage electric equipment as comfortable part is in series with respectively with electrical relay, when breaking down,
Directly cut off the corresponding electrical relay of the failure part, you can by itself and other high voltage electric equipment blockings, avoid high to other
Pressure electrical equipment impacts.
This kind classification control mode has the advantage that：（1）Fast charge equipment is individually controlled by fast charge relay, when its failure
When controlled by fast charge relay, on other electrical equipments without influence；（2）Trickle charge apparatus（Vehicular charger）With HVH,
The heat insulation functions component such as DCDC, which is placed on, influences the overcharge of battery system with when in all the way, can effectively reduce heat preservation, makes guarantor
Other component is not had an impact into a minor loop individually when warm；（3）Consider that Vehicular charger also possesses external discharge configuration
Model（Vehicular charger can externally provide 220V household voltages, make for family expenses electric equipment inversely by consuming cell system voltage
With during such as outdoor camping, providing the voltages such as barbecue, notebook, illumination）, Vehicular charger also possesses high voltage electric device attribute,
All high voltage electric equipment of vehicle are attributed to one kind, by same high-voltage relay control, it may have reasonability, convenient for control and
Policing feature is realized；Trickle charge equipment is also attributable to comfortable part；（4）Electric machine is filled as driving traveling part with comfortable part and charging
Separation is put, when comfortable part failure or charging unit failure（Such as power is crossed to put and causes punch through, is out of control）, can be corresponding by disconnecting
Relay isolates failure part, and is unlikely to influence electric machine, maintains vehicle driveability to the full extent, this is to vehicle
High voltage component failure occurs in the process of moving has very big advantage, has very on vehicle driving maneuver performance is ensured
Big effect；（5）During high voltage electric equipment fault, directly it individually can be isolated, avoid causing shadow to other high voltage electric equipment
It rings, realizes point-to-point independent isolation.
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；Quick charger；Respectively with the power battery and the quick charger
Connected fast charge relay；The positive relay of master being connected with the anode of the power battery and the cathode with the power battery
Connected master bears relay；It is connected to the positive relay of the master and the master bears electric machine between relay, the motor
Device includes motor；Be connected with the positive relay of the master with electrical relay and be connected in parallel on the positive relay of the master and institute
Multiple high voltage electric equipment between main negative relay are stated, each high voltage electric equipment is connected accordingly respectively with electrical relay, institute
Stating control method includes：According to the operating mode of execution, the quick charge is controlled by disconnecting and being closed the fast charge relay
The connection of machine and the power battery or by disconnecting and being closed the positive relay of the master and described controlled with electrical relay
The high voltage electric equipment and the connection of the power battery.
Wherein, in execution during high-voltage electricity operating mode, it is closed bears relay with electrical relay, preliminary filling relay and master first, make
High voltage electric equipment terminal voltage is lifted to first voltage by 0V；Then main positive relay is closed, makes high voltage electric equipment terminal voltage
Second voltage is lifted to by first voltage；After high voltage electric equipment end voltage stabilization is in second voltage, preliminary filling relay is disconnected
Device；When performing lower high-voltage electricity operating mode, high voltage electric equipment is made to reduce electric power to outage threshold, is disconnected with electrical relay, master
Positive relay and main negative relay.
Wherein, when performing comfortable part fault condition, the electric power of high voltage electric equipment is reduced to outage threshold, then is disconnected
The high voltage electric equipment to break down uses electrical relay, main positive relay and main negative relay is kept to be closed, control motor dress
It puts and vehicle offer driving force is provided.
Wherein, under key gear is in key off states or key on states perform trickle charge operating mode when, be closed with it is vehicle-mounted
The electrical relay of the first of charger series connection, main positive relay and main negative relay, Vehicular charger is started to work, to power electric
Pond carries out trickle charge；When exiting trickle charge operating mode, the charge power of Vehicular charger is reduced first until charging current is reduced to 0A, so
First is disconnected afterwards with electrical relay, main positive 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, reclose main positive relay and the first electricity consumption after
Electric appliance, Vehicular charger are started to work, and be power battery charging and are that direct-flow inverter and coolant heater are powered；It exits
During trickle charge heating cycle, high voltage electric equipment electric power is reduced first until electric current is 0A；Then reduce charge power until
Electric current is 0A, disconnects first with electrical relay, and stopping Vehicular charger working, then disconnects second to connect with direct-flow inverter and use
Electrical relay, the 3rd to connect with coolant heater bear relay with electrical relay, main positive relay and master.
Wherein, when performing trickle charge heat preservation operating mode, the trickle charge heating cycle is adopted as heir, is then turned off leading positive relay and master is negative
Relay stops the trickle charge to power battery, keeps first to use electrical relay with electrical relay, the 3rd with electrical relay, second
It is closed, provides electric energy for direct-flow inverter and coolant heater by Vehicular charger, maintain the temperature of power battery；It exits slow
Fill heat preservation operating mode when, first reduce high voltage electric equipment electric power until electric current be 0A, then stop Vehicular charger work,
First is disconnected again uses electrical relay with electrical relay, the 3rd with electrical relay, second.
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, the electric power of high voltage electric equipment is then made to remain zero；Then be closed preliminary filling relay, second with electrical relay,
Connect with air-conditioning heater the 4th with electrical relay, connect with compressor of air conditioner the 5th with electrical relay and master bear relay
Device makes high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment end electric
Pressure is lifted to second voltage by first voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnect preliminary filling after
Electric appliance；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；It exits
The flow of trickle charge fast-refrigerating operating mode 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, be closed 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；It exits 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 the second electricity consumption relay connected with direct-flow inverter
Device, the 3rd to connect with coolant heater electrical relay, main positive relay；Then charge power is reduced 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, the electric power of high voltage electric equipment is then made to remain zero；Then second is closed to heat with electrical relay, with air-conditioning
Device series connection the 4th with electrical relay, connect with compressor of air conditioner the 5th with electrical relay, preliminary filling relay and master bear relay
Device makes high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Main positive relay is reclosed, makes high voltage electric equipment end electric
Pressure is lifted to second voltage by first voltage；High voltage electric equipment end voltage stabilization is treated after second voltage, disconnect preliminary filling after
Electric appliance；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power request start-up operation, carry out fast-refrigerating；It exits
The flow of fast charge fast-refrigerating operating mode 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
It repeats 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
It encloses, therefore equivalent variations made according to the claims of the present invention, it is still within the scope of the present invention.
Claims (13)
1. a kind of high-pressure system of new-energy automobile, which is characterized in that including：
Power battery, for exporting high-voltage electricity；
Quick charger, for carrying out quick charge using extraneous high-voltage electricity for the power battery；
Fast charge relay is connected respectively with the power battery and the quick charger, for being controlled by disconnecting and being closed
Make the fast charge circuit of the power battery；
The positive relay of master that is connected with the anode of the power battery and with the master that the cathode of the power battery is connected bear after
Electric appliance；
It is connected to the positive relay of the master and the master bears electric machine between relay, the electric machine includes electronic
Machine, the high-voltage electricity for the power battery to be used to provide provide driving power for vehicle；
It is connected in parallel on the positive relay of the master and the master bears multiple high voltage electric equipment between relay, each high voltage electric equipment
Series connection is accordingly with electrical relay, the high pressure being used for electrical relay by disconnecting and being closed that it is controlled to be connected respectively
The high voltage supply circuit of electrical equipment.
2. high-pressure system according to claim 1, which is characterized 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 being closed, the preliminary filling relay also connects
Preliminary filling resistance is connected to, for being classified the output voltage for raising the power battery.
3. high-pressure system according to claim 1, which is characterized in that the high voltage electric equipment includes：
Vehicular charger, for being charged at a slow speed for the power battery using extraneous high-voltage electricity；
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 being heated for the coolant of 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 3, which is characterized in that the electrical relay includes：
First uses electrical relay, connects with Vehicular charger, for the high pressure by disconnecting and being closed to control Vehicular charger
Current supply circuit；
Second uses electrical relay, connects with direct-flow inverter, for the high pressure by disconnecting and being closed to control direct-flow inverter
Current supply circuit；
3rd uses electrical relay, connects with coolant heater, for controlling coolant heater by disconnecting and being closed
High voltage supply circuit；
4th uses electrical relay, connects with air-conditioning heater, for the high pressure by disconnecting and being closed to control air-conditioning heater
Current supply circuit；
5th uses electrical relay, connects with compressor of air conditioner, for the high pressure by disconnecting and being closed to control compressor of air conditioner
Current supply circuit.
5. high-pressure system according to claim 3, which is characterized 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, under trickle charge or fast charge operating mode, the motor
Device is in idle condition.
6. a kind of control method of the high-pressure system of new-energy automobile, which is characterized in that the high-pressure system includes：Power electric
Pond；Quick charger；The fast charge relay being connected respectively with the power battery and the quick charger；With the power electric
The positive relay of master and bear relay with the master that the cathode of the power battery is connected that the anode in pond is connected；It is connected to the master
Positive relay and the master bear the electric machine between relay, and the electric machine includes motor；With the positive relay of the master
Device be connected with electrical relay and be connected in parallel on the positive relay of the master and the master bears multiple high voltage electrics between relay
Equipment, each high voltage electric equipment is connected respectively uses electrical relay accordingly, and the control method includes：According to the operating mode of execution,
It controls the connection of the quick charger and the power battery by disconnecting and being closed the fast charge relay or passes through
It disconnects and is closed the positive relay of the master and described the high voltage electric equipment and the power battery are controlled with electrical relay
Connection.
7. control method according to claim 6, which is characterized in that in execution during high-voltage electricity operating mode, be closed electricity consumption first
Relay, preliminary filling relay and main negative relay, make high voltage electric equipment terminal voltage be lifted to first voltage by 0V；Then it is closed
Main positive relay, makes high voltage electric equipment terminal voltage be lifted to second voltage by first voltage；When high voltage electric equipment terminal voltage
Stablize after second voltage, disconnect preliminary filling relay, wherein, preliminary filling relay is connected in parallel on the positive relay both ends of the master；It holds
Under row during high-voltage electricity operating mode, high voltage electric equipment is made to reduce electric power to outage threshold, is disconnected with electrical relay, main positive relay
Device and main negative relay.
8. control method according to claim 7, which is characterized in that when performing comfortable part fault condition, reduce high pressure and use
The electric power of electric equipment is to outage threshold, then disconnects the electrical relay of using of the high voltage electric equipment to break down, and holding is main just
Relay and main negative relay are closed, and control electric machine continues as vehicle and provides driving force.
9. control method according to claim 7, which is characterized 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 main positive relay and first and uses electrical relay, and Vehicular charger start-up operation is power battery charging and is
Direct-flow inverter and coolant heater power supply；When exiting trickle charge heating cycle, high voltage electric equipment electric power is reduced first
Until electric current is 0A；Then charge power is reduced until electric current is 0A, and the electrical relay of disconnection first stops Vehicular charger work
Make, then disconnect connect with direct-flow inverter second with electrical relay, connect with coolant heater the 3rd use electrical relay,
Main positive relay and main negative relay.
10. control method according to claim 9, which is characterized in that when performing trickle charge heat preservation operating mode, adopt as heir the trickle charge
Heating cycle is then turned off leading positive relay and main negative relay, stops the trickle charge to power battery, keep the first electricity consumption relay
Device, second are closed with electrical relay, the 3rd with electrical relay, are carried by Vehicular charger for direct-flow inverter and coolant heater
For electric energy, the temperature of power battery is maintained；Exit trickle charge heat preservation operating mode when, first reduce high voltage electric equipment electric power until
Electric current is 0A, then stops Vehicular charger work, then disconnects first and use electrical relay, the 3rd electricity consumption with electrical relay, second
Relay.
11. control method according to claim 9, which is characterized in that when performing trickle charge fast-refrigerating operating mode, initially enter
Then trickle charge operating mode judges whether to need fast-refrigerating, if so, the electric power of high voltage electric equipment is then made to remain zero；So
Preliminary filling relay, the second use electrical relay, the 4th use electrical relay and the compressor of air conditioner connected with air-conditioning heater are closed afterwards
The 5th of series connection bears relay with electrical relay and master, and high voltage electric equipment terminal voltage is made to be lifted to first voltage by 0V；It closes again
Main positive relay is closed, high voltage electric equipment terminal voltage is made to be lifted to second voltage by first voltage；Treat high voltage electric equipment end electricity
Pressure is stablized after second voltage, disconnects preliminary filling relay；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send power
Request is started to work, and carries out fast-refrigerating；It exits the flow of trickle charge fast-refrigerating operating mode and exits the flow of trickle charge heating cycle
It is identical.
12. control method according to claim 7, which is characterized 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
Open connect with direct-flow inverter second with electrical relay, connect with coolant heater the 3rd use electrical relay, lead just after
Electric appliance；Then reduce charge power until electric current is 0A, stop quick charger work, then disconnect fast charge relay and it is main negative after
Electric appliance.
13. control method according to claim 12, which is characterized 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, the electric power of high voltage electric equipment is then made to remain zero；
Then second is closed with electrical relay, the 4th use electrical relay connected with air-conditioning heater, connect with compressor of air conditioner the
Five bear relay with electrical relay, preliminary filling relay and master, and high voltage electric equipment terminal voltage is made to be lifted to first voltage by 0V；Again
Main positive relay is closed, high voltage electric equipment terminal voltage is made to be lifted to second voltage by first voltage；Treat high voltage electric equipment end
Voltage stabilization disconnects preliminary filling relay after second voltage；Direct-flow inverter, air-conditioning heater and compressor of air conditioner send work(
Rate request is started to work, and carries out fast-refrigerating；It exits the flow of fast charge fast-refrigerating operating mode and exits the stream of fast charge heating cycle
Cheng Xiangtong.
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| CN111016655A (en) * | 2019-12-16 | 2020-04-17 | 珠海格力电器股份有限公司 | Charging control circuit and method for air conditioner of electric automobile and voltage detection method |
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| CN115133627A (en) * | 2022-08-24 | 2022-09-30 | 小米汽车科技有限公司 | Charge-discharge circuit structure, integrated power distribution unit, power battery pack and vehicle |
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| CN115133627A (en) * | 2022-08-24 | 2022-09-30 | 小米汽车科技有限公司 | Charge-discharge circuit structure, integrated power distribution unit, power battery pack and vehicle |
| CN115848230A (en) * | 2023-02-16 | 2023-03-28 | 广州巨湾技研有限公司 | Emergency heating method, device and system for battery pack |
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Application publication date: 20180522 |