CN108749517A - A kind of heat management system of electric vehicle - Google Patents
A kind of heat management system of electric vehicle Download PDFInfo
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- CN108749517A CN108749517A CN201810872031.4A CN201810872031A CN108749517A CN 108749517 A CN108749517 A CN 108749517A CN 201810872031 A CN201810872031 A CN 201810872031A CN 108749517 A CN108749517 A CN 108749517A
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- Prior art keywords
- triple valve
- valve
- condenser
- battery pack
- heat
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00007—Combined heating, ventilating, or cooling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
- B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
- B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The present invention provides a kind of heat management systems of electric vehicle.Heat management system includes heat pump air conditioner component, including compressor 1, condenser 2, evaporator 4 and associated first electric expansion valve 3, the heat exchanger 8 of fluid supply and associated flow control valve 7, gas-liquid separator 9, heater cores 12 and the first low-temperature radiator 20, the evaporator 4 and the heater cores 12 are located at refrigeration or heating in the air-conditioning box of the electric vehicle for in-vehicle air.According to heat management system provided by the present invention, the problem of eliminating the outer air-source condenser of vehicle, avoid vehicle external heat exchanger frosting, and it is integrated with interior battery pouring-basket cooling system and electromotor cooling system, makes three system combined work, vehicle heat management efficiency more excellent.
Description
Technical field
The present invention relates to heat management systems, the more particularly, to heat management system of electric vehicle.
Background technology
With the rapid development of electric vehicle engineering, conventional air source heat pump air-conditioning system be applied to electric vehicle it
In, but still there is following problems for conventional air source heat pump air-conditioning system：
1, when vehicle external environment temperature is relatively low, humidity is larger, when heat pump heats, vehicle external heat exchanger frosting can be led to, even
It freezes, seriously affects the heat exchange efficiency of vehicle external heat exchanger, need to carry out defrosting processing in time.
2, in vehicle external heat exchanger frosting, conventional heat pump air-conditioning system must first defrost to it, be refrigeration when defrosting
Pattern cannot heat car, and in cold winter, vehicle external heat exchanger defrosting time is longer, and car passes through car body
Heat dissipation is again relatively more violent, and vehicle interior temperature will be greatly reduced, and seriously affect interior comfort.
3, the fever of electric control and the fever of battery pack are not efficiently used, this partial heat is wasted.
4, at low ambient temperatures (0 DEG C~-20 DEG C) operation when, compressor air suction temperature is low, and must in order to meet heating
High-temperature exhaust air must be kept, causes the heating performance of heat pump system poor.
5, under summer superhigh temperature weather (45 DEG C or more), the low-temperature radiator in electromotor cooling system is in such severe gas
Temperature is lower to be possible to the temperature of motor coolant liquid are reduced to design object value hereinafter, influencing traffic safety and vehicle performance.
Therefore, in order to improve the experience sense by bus of electric vehicle car passenger, there is an urgent need for a kind of heat for electric vehicle
Management system can overcome deficiency existing for above-mentioned conventional air source heat pump air-conditioning system, keep the stability of heating operations simultaneously
And provide good experience sense by bus for passenger.
Invention content
A brief summary of one or more aspects is given below to provide to the basic comprehension in terms of these.This general introduction is not
The extensive overview of all aspects contemplated, and be both not intended to identify critical or decisive element in all aspects also non-
Attempt to define the range in terms of any or all.Its unique purpose is to provide the one of one or more aspects in simplified form
A little concepts are with the sequence for more detailed description given later.
As described above, in order to solve the problems, such as above-mentioned conventional heat pump air-conditioning system, the present invention provides a kind of electricity
The heat management system of motor-car, including：Heat pump air conditioner component, including compressor 1, condenser 2, evaporator 4 and associated
One electric expansion valve 3, the heat exchanger 8 of fluid supply and associated flow control valve 7, gas-liquid separator 9, heater cores 12 and
One low-temperature radiator 20, the evaporator 4 and the heater cores 12 are located in the air-conditioning box of the electric vehicle for car
The refrigeration of air or heating, wherein the compressor 1, the condenser 2, the flow control valve 7, the heat exchanger 8 and institute
It states gas-liquid separator 9 and constitutes the first refrigerant circuit, the compressor 1, the condenser 2,3 and of the first electric expansion valve
The evaporator 4 constitutes second refrigerant circuit, and the condenser 2, the first triple valve 11 and the heater cores 12 constitute the
One coolant circuit, the condenser 2, first triple valve 11 and first low-temperature radiator 20 constitute the second cooling
Liquid circuit, the heat management system have the first heating operating mode and refrigeration work pattern, in the first heating Working mould
Under formula, the flow control valve 7 is opened, and first electric expansion valve 3 is closed, and the condenser 2 is made to be made via described first
Refrigerant circuit circularly cooling agent, first triple valve 11, which is switched to, makes the condenser 2 via first coolant circuit
Circulating cooling liquid, under the refrigeration work pattern, the flow control valve 7 is closed, and first electric expansion valve 3 is opened,
Make the condenser 2 via the second refrigerant circuit cycle refrigerant, refrigerant suction atmospheric heat in the evaporator 4
To cool down to in-vehicle air, first triple valve 11, which is switched to, makes the condenser 2 be followed via second coolant circuit
Ring coolant liquid.
Such as above-mentioned heat management system, optionally, the heat management system also has dehumidification work pattern, in the dehumidifying
Under operating mode, the flow control valve 7 is closed, and first electric expansion valve 3 is opened, and makes the condenser 2 via described
Second refrigerant circuit cycle refrigerant, first triple valve 11, which is switched to, makes the condenser 2 be cooled down via described first
Liquid circuit cycle coolant liquid.
Such as above-mentioned heat management system, optionally, automatically controlled 23 and 24 structure of motor of the heat exchanger 8 and the electric vehicle
At motor cooling circuit, under the first heating operating mode, the coolant liquid of the motor cooling circuit is via the heat exchange
Device 8 radiates.
Further include optionally, in second coolant circuit battery cooler 6, second such as above-mentioned heat management system
Triple valve 14, third triple valve 16, second triple valve 14 are coupled in the electricity of the battery cooler 6 and the electric vehicle
Between 15 one end are wrapped in pond, the third end of second triple valve 14 is coupled to the condenser 2, and the third triple valve 16 couples
Between 15 other end of the low-temperature radiator 20 and the battery pack, the third end of the third triple valve 16 is coupled to described
First triple valve 11, the battery pack 15, first low-temperature radiator 20 and the battery cooler 6 pass through the described 2nd 3
Port valve 14 and the third triple valve 16 constitute battery pack cooling circuit, and the compressor 1, the condenser 2, the second electronics are swollen
Swollen valve 5 and the battery cooler 6 constitute third refrigerant circuit, and the refrigeration work pattern further includes battery pack cooling mould
Formula, under the battery pack refrigerating mode, second electric expansion valve 5 is opened, and makes the condenser 2 simultaneously via described the
Two refrigerant circuits and the third refrigerant circuit circularly cooling agent, second triple valve 14 and the third triple valve 16
All three-dimensional is connected, and the cooling liquid part flowed out from the battery cooler 6 flows through the battery via second triple valve 14
Packet 15 is with the cooling battery pack 15.
Such as above-mentioned heat management system, optionally, between first low-temperature radiator 20 and the third triple valve 16
Equipped with the 4th triple valve 19, the third end of the 4th triple valve 19 is coupled to first low-temperature radiator 20 and the battery
Between cooler 6, the five or three is equipped between the heat exchanger 8 and the motor 24 and automatically controlled 23 in the motor cooling circuit
The third end of port valve 21, the 5th triple valve 21 is coupled to the 4th triple valve 19 and the institute of the battery pack cooling circuit
Between stating third triple valve 16, the third end of the third triple valve 16 is further coupled to the 5th triple valve 21 and the motor
Between 24 and automatically controlled 23, the heat management system also has battery pack heating mode, described under the battery pack heating mode
4th triple valve 19 is switched to bypass first low-temperature radiator 20, second triple valve 14, the third triple valve 16
Being switched to the 5th triple valve 21 makes the battery pack 15, the motor 24, the automatically controlled 23, heat exchanger 8 and the electricity
Pond cooler 6 forms third coolant circuit, to be heated for the battery pack 15 by the heat of the motor 24 and automatically controlled 23.
If above-mentioned heat management system further includes optionally the 6th triple valve 13, the 6th triple valve 13 is coupled in institute
It states between heater cores 12 and the condenser 2, the third end of the 6th triple valve 13 is coupled to the institute of the battery pack 15
One end is stated, the heat management system also has the second heating operating mode, under the second heating operating mode, described first
Triple valve 11, second triple valve 14, the third triple valve 16, the 4th triple valve 19, the 5th triple valve 21
It is switched to the 6th triple valve 13, makes the battery pack 15, the motor 24, automatically controlled 23, the battery cooler 6, institute
State condenser 2 and the heater cores 12 and form the 4th coolant circuit, with using the battery pack 15 and the motor 24,
Automatically controlled 23 heat supplies 12 heating of the heater cores.
Such as above-mentioned heat management system, optionally, the motor cooling circuit further includes being connected to the heat exchanger 8 and institute
The second low-temperature radiator 26 between motor is stated, passes through the 7th threeway between second low-temperature radiator 26 and the motor 24
Valve 25 couples, the third end of the 7th triple valve 25 be connected to it is described fall between radiator 26 and the heat exchanger, it is described
Refrigeration work pattern further includes bad weather pattern, and under the bad weather pattern, first electric expansion valve 3 is opened,
So that the condenser 2 is simultaneously via first refrigerant circuit, the second refrigerant circuit and the third refrigerant
Circuit cycle refrigerant, the 7th triple valve 25, which is switched to, makes the motor cooling circuit flow through second low-temperature radiator
26。
If above-mentioned heat management system further includes optionally heater in the battery pack cooling circuit.
According to heat management system provided by the present invention, it is integrated with interior battery pack system and electric system, making three is
System associated working, vehicle heat management efficiency are more excellent.
Description of the drawings
After reading the detailed description of embodiment of the disclosure in conjunction with the following drawings, it better understood when the present invention's
Features described above and advantage.In the accompanying drawings, each component is not necessarily drawn to scale, and has similar correlation properties or feature
Component may have same or similar reference numeral.
Fig. 1 shows the schematic diagram of heat management system provided by the invention.
Fig. 2 shows schematic diagram of the heat management system provided by the invention under refrigeration work pattern.
Fig. 3 shows schematic diagram of the heat management system provided by the invention under battery pack refrigerating mode.
Fig. 4 shows schematic diagram of the heat management system provided by the invention under the first heating operating mode.
Fig. 5 shows schematic diagram of the heat management system provided by the invention under battery pack heating mode.
Fig. 6 shows schematic diagram of the heat management system provided by the invention under the second heating operating mode.
Fig. 7 shows schematic diagram of the heat management system provided by the invention under dehumidification mode.
Fig. 8 shows schematic diagram of the heat management system provided by the invention under bad weather pattern.
Reference numeral
Compressor 1
Condenser 2
Electric expansion valve 3
Interior evaporator 4
Electric expansion valve 5
Battery cooler 6
Flow control valve 7
Heat exchanger 8
Gas-liquid separator 9
Water pump 10
First triple valve 11
Heater cores 12
6th triple valve 13
Second triple valve 14
Battery pack 15
Third triple valve 16
Water pump 17
High-pressure water-heating heater 18
4th triple valve 19
First low-temperature radiator 20
5th triple valve 21
Water pump 22
Automatically controlled 23
Motor 24
7th triple valve 25
Second low-temperature radiator 26
Specific implementation mode
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.Note that below in conjunction with attached drawing and specifically real
The aspects for applying example description is merely exemplary, and is understood not to carry out any restrictions to protection scope of the present invention.
Although as described above, can by existing conventional air source heat pump air-conditioning system be applied to electric vehicle in,
In real work, there are many problems for conventional air heat pump air conditioning system, in particular, applied on electric vehicle, the above problem is more
For protrusion.Therefore, the present invention provides a kind of heat management systems, and the above problem, vehicle heat management performance can be avoided more excellent.
Fig. 1 shows the schematic diagram of heat management system provided by the present invention.Heat management system master provided by the present invention
It is divided into four circuits, respectively heat pump air conditioner circuit, warm air system circuit, battery pouring-basket cooling system circuit and motor cooling system
System circuit.Specifically, heat pump air conditioner circuit includes：Compressor 1, condenser 2, electric expansion valve 3, interior evaporator 4, electronics are swollen
Swollen valve 5, battery cooler 6, flow control valve 7, heat exchanger 8, gas-liquid separator 9.This partial circuit plays the present invention and is carried
The main refrigerant function of the heat management system of confession.
Warm air system circuit includes：Water pump 10, the first triple valve 11, heater cores 12, the 6th triple valve 13.This part
Play the main heat-production functions of heat management system provided by the present invention in circuit.
Battery pouring-basket cooling system circuit includes：Water pump 17, high-pressure water-heating heater 18, the 4th triple valve 19, the first low temperature
Radiator 20, battery cooler 6, the second triple valve 14, battery pack 15, third triple valve 16.Those skilled in the art should know
Road, battery pouring-basket cooling system are passed through in heat management system provided by the present invention applied to the basic configuration of electric vehicle
Heat pump air conditioner circuit and battery pack circuit are combined together by battery cooler 6, are cooled down to battery pack using heat pump air conditioner, battery
The calorific value of packet can be transmitted to warm air system by pipeline, improve the capacity usage ratio of vehicle, more energy efficient.
Electromotor cooling system circuit includes：Water pump 22, automatically controlled 23, motor 24, the 7th triple valve 25, the second low-temperature radiator
26, heat exchanger 8, the 5th triple valve 21.Those skilled in the art, which answer, to be known, electromotor cooling system is applied to electric vehicle
Basic configuration, in heat management system provided by the present invention, by heat exchanger 8 by heat pump air conditioning system and electromotor cooling system
Be combined together, use heat pump air conditioning system to motor cooling water temperature or when heat pump air conditioner heats motor cooling water as heat
Source uses, in electromotor cooling system the calorific value of electric control be also utilized in warm air system, heat, improve whole for crew module
Vehicle capacity usage ratio, it is more energy efficient.
Heat management system provided by the present invention has multiple-working mode, and below with reference to Fig. 2-Fig. 8, specifically expansion is every
A kind of concrete condition of operating mode.
Fig. 2 shows the schematic diagram of heat management system provided by the invention work in cooling mode.As shown in Fig. 2, through
1 compressed high-temperature high-pressure refrigerant of compressor enters condenser 2, and it is low then to become low pressure by the throttling of electric expansion valve 3
The refrigerant of temperature, evaporator 4 into the car, to air cooling-down into the car.In the car in evaporator 4, refrigerant suction into
The heat for entering in-vehicle air becomes low-pressure superheated steam, to play the effect of reduction vehicle interior temperature, refrigeration.Low-pressure superheated steam
The refrigerant of form subsequently enters gas-liquid separator 9, is then return to compressor 1, realizes refrigeration cycle.At this point, in heat pump air conditioner
In system, electric expansion valve 5 and flow control valve 7 are turned off.
In the hydraulic fluid side of condenser 2, coolant liquid pass through water pump 10, successively pass through the first triple valve 11, third triple valve 16,
Water pump 17, PTC18, the 4th triple valve 19, then coolant liquid enter the first low-temperature radiator 20, the heat of coolant liquid passes through first
Cryogenic heat exchanger 20 passes to outdoor air, and then coolant liquid returns to condenser by battery cooler 6, the second triple valve 14
2。
Fig. 3 shows and is also cooled down to battery pack while heat management system provided by the invention is operated in refrigeration mode
Schematic diagram.As shown in figure 3, compared with pattern 1, in heat pump air conditioning system, electric expansion valve 5 is opened, and refrigerant flows through electricity
Pond cooler 6.In battery cooler 6, the heat of refrigerant suction coolant liquid becomes low-pressure superheated steam, is cooled down to battery pack
Liquid is cooled down.In battery pack circuit, enter battery pack 15 to electricity by a part of coolant liquid after cooling of battery cooler 6
Chi Bao is cooled down.
Fig. 4 shows the schematic diagram that heat management system provided by the invention is operated under the first heating mode.Above-mentioned
Under one heating mode, compressor 1 needs work to provide enough heats.Specifically, as shown in figure 4, after the compression of compressor 1
High-temperature high-pressure refrigerant enter condenser 2, with flow through condenser 2 coolant liquid carry out heat exchange, coolant liquid absorb refrigerant
Heat becomes high temperature coolant, and high-temperature high-pressure refrigerant becomes low-temperature refrigerant by condenser 2.In warm wind circuit, high temperature
Coolant liquid passes through water pump 10 and the first triple valve 11 successively, and into heater cores 12, high temperature coolant is to by heater cores
Air heats, and the air heated enters crew module and carries out heating, and then cryogenic liquid returns to condenser 2 by triple valve 13
Form cycle.
Under above-mentioned first heating mode, it can be seen that low-temperature refrigerant can also be become by the throttling of flow control valve 7
For the refrigerant of low-pressure low-temperature, into heat exchanger 8, in heat exchanger 8, the heat of refrigerant suction motor coolant liquid becomes low pressure
Superheated steam is then return to compressor 1 subsequently into gas-liquid separator 9.At this point, in heat pump air conditioning system, electric expansion valve
3 and 5 are turned off.Coolant liquid in electric motor loop passes through water pump 22, sequentially enters automatically controlled 23, motor 24, the 7th triple valve 25,
Subsequently into heat exchanger 8, cooled down in heat exchanger 8, then passes through five triple valves 21 and return to water pump 22.
Heat exchanger 8 is a part for electric motor loop, at work due to vehicle, needs to cool down to ensure vehicle to motor
Can even running the cooling of motor is realized by the second radiator 26 in the prior art.In the present embodiment, due to
Refrigerant is low-pressure low-temperature state, therefore can be cooled down to motor using some refrigerant, and refrigerant energy is not wasted
While compared with the second radiator 26 radiating efficiency, the motor radiating of highly efficient rate can be played the role of.The present invention passes through
The mode that the 7th triple valve 25 is arranged bypasses above-mentioned second radiator 26 so that cooling rely on of coolant liquid flows through in heat exchanger 8
Coolant liquid rather than the second radiator 26 operation.
Fig. 5 shows that heat management system provided by the invention is operated in the schematic diagram of battery pack heating mode.Electric vehicle
Battery pack can be described as the energy source of electric vehicle, thus particularly important is become for the maintenance of battery pack, battery pack temperature
Spend that high, temperature distribution is non-uniform and temperature is too low can all impact the service life of battery pack.At low ambient temperatures, battery
Packet inside electrochemical reaction due to by low temperature effect can not normal operation, therefore, it is necessary to be heated to battery pack.It is existing
It is to be realized by the way that high-pressure water-heating heater PCT18 is arranged in battery pack circuit in technology.And in fact, due to vehicle electricity
Machine has extra heat to be shed at work, can be heated for battery pack using the partial heat.Specifically, such as Fig. 5 institutes
Show, coolant liquid passes through water pump 22, sequentially enters automatically controlled 23, motor 24, temperature increases after coolant liquid absorbs electric control heat, so
It is cold to pass through the 7th triple valve 25, heat exchanger 8, the 5th triple valve 21, water pump 17, PTC18, the 4th triple valve 19, battery successively afterwards
But device 6, the second triple valve 14, subsequently into battery pack 15, at this point, coolant liquid heats battery pack 15, last coolant liquid passes through
Third triple valve 16 returns to water pump 22.The coolant liquid circulation loop realizes the work(that recycling electric control heat is battery pack heating
Energy.
Fig. 6 shows that heat management system provided by the invention is operated in the schematic diagram of the second heating mode.In the first heating
Under pattern, heat mostlys come from the acting of compressor 1.And during vehicle is run, motor and battery pack can be distributed persistently
Heat, can utilize this partial heat be passenger inside the vehicle heat, without compressor 1 do work, can play energy recycling,
Energy-efficient effect.Specifically, as shown in fig. 6, coolant liquid sequentially enters automatically controlled 23, motor 24 by water pump 22, coolant liquid absorbs
After electric control heat temperature increase, then in turn through the 7th triple valve 25, heat exchanger 8, the 5th triple valve 21, water pump 17,
Then PTC18, the 4th triple valve 19, battery cooler 6, the second triple valve 14 pass through condenser 2, water pump 10, the first triple valve
11, heater cores 12 are eventually entered into, coolant liquid gives the air into crew module to heat, and then coolant liquid passes through the 6th triple valve
13, battery pack 15 return to water pump 22 finally by third triple valve 16.
In the coolant circulation system, battery pack 15, automatically controlled 23, motor 24 calorific value are absorbed by coolant liquid, cooling
Liquid temperature increases, and in heater cores 12, coolant liquid is to air heating into the car.It realizes to electric control and battery pack
Heat is efficiently used.
Fig. 7 shows the schematic diagram that heat management system provided by the invention is operated under dehumidification mode.On rainy day, car
Humid air can not only cause the body-sensing of passenger inside the vehicle uncomfortable, can also form fog on interior glass for vehicle window, block driver
Sight, influence traffic safety.Therefore, it is necessary to dehumidify to in-vehicle air, in fact, when heat management system is operated in refrigeration
It when under pattern, has been able to play the role of dehumidifying to in-vehicle air, but under certain cold snaps, is not suitable for the system of opening
Chill formula, therefore, it is necessary to design dehumidification mode heat management system can effectively dehumidify to in-vehicle air and car
The body-sensing of passenger is comfortable.Specifically, as shown in fig. 7, the heat pump air conditioner loop works of heat management system in refrigerating state, i.e., through pressure
1 compressed high-temperature high-pressure refrigerant of contracting machine enters condenser 2, and the throttling for then passing through electric expansion valve 3 becomes low-pressure low-temperature
Refrigerant, evaporator 4 into the car carry out cool-down dehumidification, then, refrigerant in evaporator 4 to air into the car
Into gas-liquid separator 9, it is then return to compressor 1.
At this point, although in-vehicle air has been dehumidified, due in refrigeration mode, in-vehicle air is more cold, therefore,
In warm air system, coolant liquid pass through condenser 2 when absorb refrigerant heat become high temperature coolant, then pass through water pump 10 into
Enter heater cores 12, high temperature coolant by the air of 4 cool-down dehumidification of evaporator to heating so that air is with suitable temperature
Degree enters crew module, alleviates the problem of air cold, achievees the purpose that dehumidifying.
Fig. 8 shows the schematic diagram that heat management system provided by the invention is operated under bad weather pattern.This field skill
Art personnel should be known that the presence due to motor, battery pack, and the running environment of vehicle is more harsh, in particular, vehicle is on road surface
When traveling, various extreme weathers, such as heat are frequently encountered.It is 45 DEG C or more, at this moment interior under summer atrocious weather
It needs to freeze, battery pack needs to cool down, and motor also needs to cool down, and therefore, in existing technology, only passes through the first radiator 20
Under such severe temperature possibly the temperature of motor coolant liquid can not be reduced to design object value with the second radiator 26 hereinafter,
Influence safety and vehicle performance.To solve the above-mentioned problems, the present invention is in electromotor cooling system, in addition to the second low-temperature radiator
Other than 26, by increasing heat exchanger 8, the temperature of motor coolant liquid can be further decreased, ensures cooling effect of motor.In battery
In cooling system, is radiated together by the first low-temperature radiator 20 and battery cooler 6, battery coolant liquid can be further decreased
Temperature ensures battery cooling effect.
In the coolant circulation system that battery pouring-basket cooling system and warm air system form, 17 high-speed cruising of big water pump is small
Water pump 10 can close, and can also according to circumstances open, and refrigerant is transmitted to the heat of coolant liquid by first in condenser 2 at this time
Low-temperature radiator 20 and battery cooler 6 dissipate, while coolant liquid passes through the first low-temperature radiator 20 and battery cooler 6 successively
Later, temperature reduces, and a part of coolant liquid enters battery pack 15 by two triple valves 14, radiates to battery pack.
So far, it has been explained that the concrete condition of the different working modes of heat management system provided by the invention.In this hair
In bright provided heat management system, the outer air-source condenser of vehicle is eliminated, vehicle external heat exchanger frosting problem can be effectively avoided,
It also avoids heat pump air conditioner at low ambient temperatures and heats unstable problem, heat pump air conditioning system in crew module not only to making
Cold and heating, additionally it is possible to which battery and motor are cooled down.Even at (- 20 DEG C) at low ambient temperatures, since there is no vehicle
The problem of external heat exchanger frosting, heat pump air conditioning system heating performance are stablized.The fever of electric control is by battery pouring-basket cooling system profit
With recycling to the energy of electric control, heated to battery pack using the heat of motor.Electric control and battery pack
Fever can also be utilized by warm air system, be used for being crew module's heating.Under bad working environments, (45 under environment ultra-high temperature condition
DEG C or more), heat pump air conditioning system conjunction with motor cooling system and battery pouring-basket cooling system work together, and carry out vehicle heat
Management improves vehicle heat management performance.According to heat management system provided by the present invention, heat pump air conditioning system is integrated into existing skill
For the electromotor cooling system of vehicle and battery pouring-basket cooling system to carry out vehicle heat management in art, make between three systems mutually
Association, takes full advantage of vehicle energy, not only energy saving, but also improves vehicle capacity usage ratio.
Offer is that can make or use this public affairs to make any person skilled in the art all to the previous description of the disclosure
It opens.The various modifications of the disclosure all will be apparent for a person skilled in the art, and as defined herein general
Suitable principle can be applied to spirit or scope of other variants without departing from the disclosure.The disclosure is not intended to be limited as a result,
Due to example described herein and design, but should be awarded and principle disclosed herein and novel features phase one
The widest scope of cause.
Claims (8)
1. a kind of heat management system of electric vehicle, including：
Heat pump air conditioner component, including compressor 1, condenser 2, evaporator 4 and associated first electric expansion valve 3, fluid supply
Heat exchanger 8 and associated flow control valve 7, gas-liquid separator 9, heater cores 12 and the first low-temperature radiator 20, it is described
Evaporator 4 and the heater cores 12 are located at refrigeration or heating in the air-conditioning box of the electric vehicle for in-vehicle air,
The wherein described compressor 1, the condenser 2, the flow control valve 7, the heat exchanger 8 and the gas-liquid separator 9
Constitute the first refrigerant circuit, the compressor 1,4 structure of the condenser 2, first electric expansion valve 3 and the evaporator
At second refrigerant circuit,
The condenser 2, the first triple valve 11 and the first coolant circuit of composition of the heater cores 12, the condenser 2,
First triple valve 11 and first low-temperature radiator 20 constitute the second coolant circuit,
The heat management system has the first heating operating mode and refrigeration work pattern, in the first heating operating mode
Under, the flow control valve 7 is opened, and first electric expansion valve 3 is closed, and the condenser 2 is made to freeze via described first
Agent circuit cycle refrigerant, first triple valve 11, which is switched to, makes the condenser 2 be followed via first coolant circuit
Ring coolant liquid,
Under the refrigeration work pattern, the flow control valve 7 is closed, and first electric expansion valve 3 is opened, and is made described cold
Condenser 2 is via the second refrigerant circuit cycle refrigerant, and refrigerant suction atmospheric heat is with to car in the evaporator 4
Air cooling-down, first triple valve 11, which is switched to, makes the condenser 2 via the second coolant circuit circulating cooling liquid.
2. heat management system as described in claim 1, which is characterized in that the heat management system also has dehumidification work mould
Formula, under the dehumidification work pattern, the flow control valve 7 is closed, and first electric expansion valve 3 is opened, and is made described cold
Condenser 2 via the second refrigerant circuit cycle refrigerant, first triple valve 11 be switched to make the condenser 2 via
The first coolant circuit circulating cooling liquid.
3. heat management system as described in claim 1, which is characterized in that the heat exchanger 8 is automatically controlled with the electric vehicle
23 and motor 24 constitute motor cooling circuit,
Under the first heating operating mode, the coolant liquid of the motor cooling circuit radiates via the heat exchanger 8.
4. heat management system as claimed in claim 3, which is characterized in that further include that battery is cold in second coolant circuit
But device 6, the second triple valve 14, third triple valve 16,
Second triple valve 14 is coupled between the battery cooler 6 and 15 one end of battery pack of the electric vehicle, institute
The third end for stating the second triple valve 14 is coupled to the condenser 2,
The third triple valve 16 is coupled between 15 other end of the low-temperature radiator 20 and the battery pack, and the described 3rd 3
The third end of port valve 16 is coupled to first triple valve 11,
The battery pack 15, first low-temperature radiator 20 and the battery cooler 6 pass through 14 and of the second triple valve
The third triple valve 16 constitutes battery pack cooling circuit,
The compressor 1, the condenser 2, the second electric expansion valve 5 and the battery cooler 6 constitute third refrigerant and return
Road,
The refrigeration work pattern further includes battery pack refrigerating mode, under the battery pack refrigerating mode, second electronics
Expansion valve 5 is opened, and makes the condenser 2 simultaneously via the second refrigerant circuit and third refrigerant circuit cycle system
Cryogen, second triple valve 14 and the third triple valve 16 all three-dimensionals are connected, the cooling flowed out from the battery cooler 6
The battery pack 15 is flowed through with the cooling battery pack 15 via second triple valve 14 in liquid part.
5. heat management system as claimed in claim 4, which is characterized in that first low-temperature radiator 20 and the described 3rd 3
The 4th triple valve 19 is equipped between port valve 16, the third end of the 4th triple valve 19 is coupled to first low-temperature radiator 20
Between the battery cooler 6,
The 5th triple valve 21 is equipped between the heat exchanger 8 and the motor 24 and automatically controlled 23 in the motor cooling circuit,
The third end of 5th triple valve 21 is coupled to the 4th triple valve 19 of the battery pack cooling circuit and the third
Between triple valve 16, the third end of the third triple valve 16 is further coupled to the 5th triple valve 21 and the motor 24 and electricity
Between control 23,
The heat management system also has battery pack heating mode, under the battery pack heating mode, the 4th triple valve
19 are switched to bypass first low-temperature radiator 20, second triple valve 14, the third triple valve 16 and the described 5th
Triple valve 21, which is switched to, makes the battery pack 15, the motor 24, the automatically controlled 23, heat exchanger 8 and the battery cooler 6
Third coolant circuit is formed, to be heated for the battery pack 15 by the heat of the motor 24 and automatically controlled 23.
6. heat management system as claimed in claim 5, which is characterized in that further include the 6th triple valve 13, the 6th threeway
Valve 13 is coupled between the heater cores 12 and the condenser 2, and the third end of the 6th triple valve 13 is coupled to described
Described one end of battery pack 15,
The heat management system also has the second heating operating mode, under the second heating operating mode, the described 1st
Port valve 11, second triple valve 14, the third triple valve 16, the 4th triple valve 19,21 and of the 5th triple valve
6th triple valve 13 is switched to,
Make the battery pack 15, the motor 24, automatically controlled 23, the battery cooler 6, the condenser 2 and the warm wind
Core 12 forms the 4th coolant circuit, to be warmed up for described using the heat of the battery pack 15 and the motor 24, automatically controlled 23
12 heating of wind core.
7. heat management system as claimed in claim 4, which is characterized in that the motor cooling circuit further include be connected to it is described
The second low-temperature radiator 26 between heat exchanger 8 and the motor, between second low-temperature radiator 26 and the motor 24
It is coupled by the 7th triple valve 25, the third end of the 7th triple valve 25 is connected to second radiator 26 and the heat exchange
Between device,
The refrigeration work pattern further includes bad weather pattern, under the bad weather pattern, first electronic expansion
Valve 3 is opened, so that the condenser 2 is simultaneously via first refrigerant circuit, the second refrigerant circuit and described the
Three refrigerant circuit circularly cooling agent,
7th triple valve 25, which is switched to, makes the motor cooling circuit flow through second low-temperature radiator 26.
8. heat management system as claimed in claim 4, which is characterized in that further include heating in the battery pack cooling circuit
Device.
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| CN201810872031.4A CN108749517A (en) | 2018-08-02 | 2018-08-02 | A kind of heat management system of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810872031.4A CN108749517A (en) | 2018-08-02 | 2018-08-02 | A kind of heat management system of electric vehicle |
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| CN108749517A true CN108749517A (en) | 2018-11-06 |
Family
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| CN201810872031.4A Pending CN108749517A (en) | 2018-08-02 | 2018-08-02 | A kind of heat management system of electric vehicle |
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