CN108749518A - 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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- CN108749518A CN108749518A CN201810872058.3A CN201810872058A CN108749518A CN 108749518 A CN108749518 A CN 108749518A CN 201810872058 A CN201810872058 A CN 201810872058A CN 108749518 A CN108749518 A CN 108749518A
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- 238000001816 cooling Methods 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 45
- 238000004378 air conditioning Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 7
- 239000003507 refrigerant Substances 0.000 claims description 47
- 239000002826 coolant Substances 0.000 claims description 42
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007791 dehumidification Methods 0.000 claims description 7
- 238000005057 refrigeration Methods 0.000 claims description 6
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 230000005494 condensation Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 6
- 206010037660 Pyrexia Diseases 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Air-Conditioning For Vehicles (AREA)
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, the first condenser 3 of air-source, the second condenser 4 of fluid supply, evaporator 6 and associated first electric expansion valve 5, the heat exchanger 10 of fluid supply and associated flow control valve 9, gas-liquid separator 11 and the first radiator 15, first condenser is located at the heating that in-vehicle air is used in the air-conditioning box of the electric vehicle.According to heat management system provided by the present invention, the outer air-source condenser of vehicle is eliminated, the heating performance of heat pump air conditioner is improved, and be integrated with interior battery pouring-basket cooling system and electromotor cooling system, makes three system combined work, make 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 radiator in electromotor cooling system is under such severe temperature
Can not the temperature of motor coolant liquid be effectively 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, improve capacity usage ratio and to multiply
Vehicle passenger provides good experience sense by bus.
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.
According to an aspect of the present invention, a kind of heat management system of electric vehicle is provided, including：
Heat pump air conditioner component, including the second condenser 4 of the first condenser 3 of compressor 1, air-source, fluid supply, evaporation
Device 6 and associated first electric expansion valve 5, the heat exchanger 10 of fluid supply and associated flow control valve 9, gas-liquid separator
11 and first radiator 15, first condenser be located at the heating that in-vehicle air is used in the air-conditioning box of the electric vehicle,
The wherein described compressor 1, first condenser 3, the flow control valve 9, the heat exchanger 10 and the gas
Liquid/gas separator 11 constitute the first refrigerant circuit, the compressor 1, second condenser 4, first electric expansion valve 5,
The evaporator 6 and the gas-liquid separator 11 constitute second refrigerant circuit, and the compressor 2 is divided by the first triple valve 2
It is not coupled to first condenser 3 and second condenser 4,
Second condenser 4 and first radiator 15 constitute coolant circuit,
In a heating mode, first triple valve 2, which is switched to, makes the compressor 1 via first refrigerant circuit
Circularly cooling agent,
In cooling mode, first triple valve 2, which is switched to, makes the compressor 1 via the second refrigerant circuit
Circularly cooling agent, second condenser 4 is via the coolant circuit circulating cooling liquid.
In one embodiment, the compressor 1, first condenser 3, first electric expansion valve 5, the evaporation
Device 6 and the gas-liquid separator 11 constitute the 5th refrigerant circuit, and under dehumidification mode, the flow control valve 9 is closed, institute
Stating the first triple valve 2 and being switched to makes the compressor 1 via the 5th refrigerant circuit circularly cooling agent.
In one embodiment, the heat exchanger 10, automatically controlled 23 and motor 24 the composition motor cooling with the electric vehicle
Circuit, in a heating mode, the coolant liquid of motor cooling circuit are radiated via the heat exchanger 8.
In one embodiment, in the coolant circuit further include battery cooler 8, the first solenoid valve 17, third threeway
One end of valve 19, the battery pack 18 of the electric vehicle is coupled to 8 He of battery cooler by first solenoid valve 17
Between second condenser 4, the other end is coupled to first radiator 15 and described by the third triple valve 19
Between two condensers 4, the battery pack 18, first radiator 15 and the battery cooler 8 constitute battery pack and cool back
Road, the compressor 1, second condenser 4, the second electric expansion valve 7 and the battery cooler 8 constitute third refrigerant
Circuit, in cooling mode, second electric expansion valve 7 are opened, and make the compressor 1 simultaneously via the second refrigerant
Circuit and the third refrigerant circuit circularly cooling agent, the conducting of the first solenoid valve 17 and the third triple valve 19 3
To conducting, the battery pack is flowed through via first solenoid valve 17 to the cooling liquid part that is flowed out from the battery cooler 8
18 with the cooling battery pack 18.
In one embodiment, the 4th triple valve 14 is equipped between first radiator 15 and the third triple valve 19,
The third end of 4th triple valve 14 is coupled between first radiator 15 and the battery cooler 8, the motor
The 5th triple valve 27, the 5th threeway are equipped between the heat exchanger 10 and the motor 24 and automatically controlled 23 in cooling circuit
The third end of valve 27 is coupled between the third triple valve 19 of the battery pack cooling circuit and the 4th triple valve 14,
The third end of the third triple valve 19 between the battery pack 18 and first radiator 15 is coupled to the described 5th 3
Between port valve 27 and the motor 24 and automatically controlled 23, second is equipped between first solenoid valve 17 and second condenser 4
Solenoid valve 20, in the case where motor heat recovery heats battery pack mode, the 4th triple valve 14 is switched to bypass described first and dissipates
Hot device 15, the conducting of the first solenoid valve 17, the closing of the second solenoid valve 20, the third triple valve 19 and the described 5th 3
Port valve 27, which is switched to, makes the battery pack 18, the motor 24, the automatically controlled 23, heat exchanger 10 and 8 shape of battery cooler
At cooling circuit, to be heated for the battery pack 18 by the heat of the motor 24 and automatically controlled 23.
In one embodiment, which further includes the heater cores 21 being set in air-conditioning box, the heater cores
21 one end is coupled to the battery cooler 8 and first solenoid valve 17 and second electromagnetism by the 6th triple valve 16
Between the tie point of valve 20, the other end is coupled to the tie point of first solenoid valve 17 and the second solenoid valve 20, in electricity
Under machine battery packet heat recovery heating pattern, first solenoid valve is opened, the second solenoid valve closes the 20, the described 6th 3
Port valve 16, the third triple valve 19, the 5th triple valve 27, which are switched to, makes the motor 24, the automatically controlled 23, heat exchanger
10, the battery cooler 8, the heater cores 21 and the battery pack 18 form cooling circuit, to utilize the battery pack
15 and the motor 24, automatically controlled 23 heat supply 21 heating of the heater cores.
In one embodiment, which further includes the second radiator 26, second radiator 26 and the electricity
It is equipped with the second triple valve 25 between machine 24, the third end of second triple valve 25 is coupled to second radiator 26 and described
Between heat exchanger 8, the compressor 1, second condenser 4, the flow control valve 9, the heat exchanger 10 and the gas
Liquid/gas separator 11 constitutes the 4th refrigerant circuit, and in cooling mode, the flow control valve 9 is opened, so that the refrigeration
Agent 2 is simultaneously via the second refrigerant circuit, the third refrigerant circuit and the 4th refrigerant circuit circularly cooling
Agent, second triple valve 25, which is switched to, makes motor cooling circuit flow through second radiator 26, the 5th triple valve 27,
The third triple valve 19, which is switched to, makes the motor cooling circuit and battery pack cooling circuit disconnect.
In one embodiment, further include heater in the battery pack cooling circuit.
According to heat management system provided by the present invention, the outer air-source condenser of vehicle is eliminated, heat pump air conditioner is improved
Heating performance, and be integrated with interior battery pouring-basket cooling system and electromotor cooling system, makes three system combined work, allows vehicle
Heat management efficiency is 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 the schematic diagrames that heat management system provided by the invention works in cooling mode.
Fig. 3 shows the schematic diagram that heat management system provided by the invention works under battery pack refrigerating mode.
Fig. 4 shows the schematic diagram that heat management system provided by the invention works in a heating mode.
Fig. 5 shows the schematic diagram that heat management system provided by the invention works under battery pack heating mode.
Fig. 6 shows schematic diagram of the heat management system provided by the invention in the case where recycling heating work pattern.
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
Triple valve 2
Internal condensation device 3
Condenser 4
Electric expansion valve 5
Interior evaporator 6
Electric expansion valve 7
Battery cooler 8
Flow control valve 9
Heat exchanger 10
Gas-liquid separator 11
Water pump 12
High-pressure water-heating heater 13
Triple valve 14
Radiator 15
Triple valve 16
Solenoid valve 17
Battery pack 18
Triple valve 19
Solenoid valve 20
Assist heater cores 21
Water pump 22
Automatically controlled 23
Motor 24
Triple valve 25
Radiator 26
Triple valve 27
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, can avoid the above problem so that heat exchanger effectiveness higher, it is whole
Vehicle heat management performance is 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 three circuits, respectively heat pump air conditioner circuit, battery pouring-basket cooling system circuit and electromotor cooling system circuit.Specifically
, heat pump air conditioner circuit includes：Compressor 1, triple valve 2, internal condensation device 3, condenser 4, electric expansion valve 5, interior evaporation
Device 6, electric expansion valve 7, battery cooler 8, flow control valve 9, heat exchanger 10, gas-liquid separator 11.This partial circuit master
Play main refrigerant, the heat-production functions of heat management system provided by the present invention.
Battery pouring-basket cooling system circuit includes：Water pump 12, high-pressure water-heating heater 13, triple valve 14, radiator 15, battery
Cooler 8, triple valve 16, solenoid valve 17, battery pack 18, triple valve 19.It will be appreciated by those skilled in the art that battery pack cools down
System circuit is cooled down by battery 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 device 8, are cooled down to battery pack using heat pump air conditioner, the fever of battery pack
Amount 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, triple valve 25, radiator 26, heat exchanger 10,
Triple valve 27.Those skilled in the art, which answer, to be known, electromotor cooling system circuit is the basic configuration applied to electric vehicle,
In heat management system provided by the present invention, heat pump air conditioning system and electromotor cooling system are incorporated in one by heat exchanger 10
It rises, using heat pump air conditioning system, motor cooling water is used as heat source to motor cooling water temperature or when heat pump air conditioner heats,
The calorific value of electric control is also utilized in warm air system in electromotor cooling system, is heated for crew module, and vehicle energy is improved
Utilization rate, it is more energy efficient.
Heat management system provided by the invention further includes auxiliary heater cores 21, and above-mentioned auxiliary heater cores 21 can be used for
The heat of electric control and battery pack is recycled, is crew module's heating, this partial circuit can provide auxiliary for heat management system
Heat-production functions, realize energy regenerating.
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 4 by triple valve 2, then passes through the throttling of electric expansion valve 5
Become the refrigerant of low-pressure low-temperature, into the car evaporator 6, to air cooling-down into the car.In the car in evaporator 6, system
The heat that cryogen is absorbed into in-vehicle air becomes low-pressure superheated steam, to play the effect of reduction vehicle interior temperature, refrigeration.It is low
The refrigerant for pressing through hot steam form subsequently enters gas-liquid separator 11, is then return to compressor 1, realizes refrigeration cycle.At this point,
In heat pump air conditioning system, electric expansion valve 7 and flow control valve 9 are turned off.
In the hydraulic fluid side of condenser 4, coolant liquid passes through water pump 12, passes through PTC13, triple valve 14 successively, then coolant liquid
Into low-temperature radiator 15, the heat of coolant liquid passes to outdoor air by cryogenic heat exchanger 15, and then coolant liquid is by electricity
Pond cooler 8, triple valve 16, solenoid valve 20, return to condenser 4, at this point, solenoid valve 17 is closed.
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 7 is opened, and refrigerant flows through electricity
Pond cooler 8, in battery cooler 8, the heat of refrigerant suction coolant liquid becomes low-pressure superheated steam, is cooled down to battery pack
Liquid is cooled down.Meanwhile in battery pouring-basket cooling system, by way of opening solenoid valve 17, a part of coolant liquid enters
Battery pack 18 cools down battery pack.
Fig. 4 shows the schematic diagram of heat management system work provided by the invention in a heating mode.In above-mentioned heating mould
Under formula, compressor 1 needs work to provide enough heats.Specifically, as shown in figure 4, high through 1 compressed high temperature of compressor
Compression refrigerant enters internal condensation device 3 by triple valve 2, and refrigerant transfers heat to air, is admitted to and multiplies after air heating
Member cabin is crew module's heating.
In such a way that internal condensation device 3 is set up directly in the air-conditioning box of electric vehicle, enable to from compressor 1
The direct heat release of high-temperature high-pressure refrigerant reserved is passenger's heating, heat exchanger effectiveness higher in the form of hot wind.
Under above-mentioned heating mode, it can be seen that be condensed into subcooled liquid after refrigerant heat dissipation, subcooled liquid passes through flow
The throttling of regulating valve 9 becomes the refrigerant of low-pressure low-temperature, into heat exchanger 10.In heat exchanger 10, refrigerant suction motor is cold
But the heat of liquid becomes low-pressure superheated steam, subsequently into gas-liquid separator 11, is then return to compressor 1.At this point, in heat pump sky
In adjusting system, electric expansion valve 5 and 7 is turned off.In electromotor cooling system, coolant liquid passes through water pump 22, sequentially enters automatically controlled
23, motor 24, triple valve 25 return to water pump 22 subsequently into heat exchanger 10 by triple valve 27.
Heat exchanger 10 is the part in electromotor cooling system circuit, at work due to vehicle, needs to drop motor
Temperature with ensure vehicle can even running the cooling of motor is realized by the second radiator 26 in the prior art.In this implementation
In example, since refrigerant is low-pressure low-temperature state, motor can be cooled down using some refrigerant, not waste system
Compared with the radiating efficiency of the second radiator 26 while cryogen energy, the motor radiating of highly efficient rate can be played the role of.This
Invention bypasses above-mentioned second radiator 26 by way of triple valve 25 is arranged so that cooling rely on of coolant liquid flows through heat exchanger
The operation of coolant liquid rather than the second radiator 26 in 10.It is more energy saving and improve vehicle heat exchanger effectiveness.
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 receive 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 PCT13 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
Pass through triple valve 25, heat exchanger 10, triple valve 27, water pump 12, PTC13, triple valve 14, battery cooler 8, triple valve successively afterwards
16, solenoid valve 17, subsequently into battery pack 18, at this point, coolant liquid heats battery pack 18, last coolant liquid passes through triple valve 19
Return to water pump 22.The coolant liquid circulation loop realizes the function that recycling electric control heat is battery pack heating.
Fig. 6 shows that heat management system provided by the invention is operated in the schematic diagram of recycling heating pattern.As shown in Figure 4
Heating mode under, heat mostly come from compressor 1 acting.And during vehicle is run, motor and battery pack can be held
It is continuous to distribute heat, this partial heat can be utilized to heat for passenger inside the vehicle, do work without compressor 1, energy can be played
It recycles, energy-efficient effect.Specifically, as shown in fig. 6, coolant liquid pass through water pump 22, sequentially enter automatically controlled 23, motor 24, it is cold
But liquid absorb electric control heat after temperature increase, then in turn through triple valve 25, heat exchanger 10, triple valve 27, water pump 12,
PTC13, triple valve 14, battery cooler 8, triple valve 16 and then coolant liquid enter auxiliary heater cores 21, give and enter crew module
Air heating, then pass through solenoid valve 17, into battery pack 18, last coolant liquid returns to water pump 22 by triple valve 19.
In the coolant circulation system, battery pack 18, automatically controlled 23, motor 24 calorific value are absorbed by coolant liquid, cooling
Liquid temperature increases, and in assisting heater cores 21, coolant liquid efficiently uses electric control and electricity to air heating into the car
Crew module's heating is given in the calorific value of Chi Bao.
Under conditions of not turning on the aircondition system, vehicle energy can be saved using the auxiliary heating pattern, improved in winter
When electric vehicle mileage travelled.In order to reach better heating effect, air-conditioning system can also be opened, allows auxiliary heating system
It is worked at the same time with air-conditioning system, improves heating effect.
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, specifically, as shown in fig. 7, being pressed through compressor 1
High-temperature high-pressure refrigerant after contracting enters internal condensation device 3 by triple valve 2, and high temperature refrigerant is to by 6 cool-down dehumidification of evaporator
Air heating, refrigerant heat dissipation after be condensed into subcooled liquid, then pass through electric expansion valve 5 throttling become low-pressure low-temperature
Refrigerant, into the car evaporator 6 carry out cool-down dehumidification in evaporator 6 to air into the car, finally, refrigerant into
Enter gas-liquid separator 11, is then return to compressor 1.Into crew module air successively pass through evaporator 6 cool-down dehumidification and
The heating of internal condensation device 3 enters crew module with suitable temperature, achievees the effect 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 form, 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 15
Possibly the temperature of motor coolant liquid can not be reduced to design object value under such severe temperature with the second radiator 26, influenced
Safety and vehicle performance.To solve the above-mentioned problems, the present invention other than radiator 26, passes through in electromotor cooling system
Increase heat exchanger 10, the temperature of motor coolant liquid can be further decreased, ensures cooling effect of motor.In battery cooling system
In, it is radiated together by radiator 15 and battery cooler 8, battery coolant temperature can be further decreased, ensure that battery is cold
But effect.
In battery pouring-basket cooling system, coolant liquid is passed through after radiator 15 and battery cooler 8 successively, and temperature reduces,
A part of coolant liquid enters battery pack 18 by solenoid valve 17, 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 right
The problem of vehicle external heat exchanger defrost, heat pump air conditioning system heating performance is still fine.The fever of electric control is cooled down by battery pack
System utilizes, and recycles to the energy of electric control, is heated to battery pack using the heat of motor.Electric control and electricity
The fever of Chi Bao can also be utilized by warm air system, be used for being crew module's heating.Under bad working environments, in environment ultra-high temperature condition
Under (45 DEG C or more), heat pump air conditioning system conjunction with motor cooling system and battery pouring-basket cooling system work together, and carries 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
In the prior art for the electromotor cooling system of electric vehicle and battery pouring-basket cooling system to carry out vehicle heat management, making three is
It is interrelated between system, vehicle energy is taken full advantage of, energy has been saved.
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 includes the second condenser 4, the evaporator 6 of the first condenser 3 of compressor 1, air-source, fluid supply
And heat exchanger 10 and associated flow control valve 9, the gas-liquid separator 11 of associated first electric expansion valve 5, fluid supply
With the first radiator 15, first condenser is located at the heating that in-vehicle air is used in the air-conditioning box of the electric vehicle,
The wherein described compressor 1, first condenser 3, the flow control valve 9, the heat exchanger 10 and the gas-liquid point
The first refrigerant circuit is constituted from device 11, it is the compressor 1, second condenser 4, first electric expansion valve 5, described
Evaporator 6 and the gas-liquid separator 11 constitute second refrigerant circuit, and the compressor 2 distinguishes coupling by the first triple valve 2
It is connected to first condenser 3 and second condenser 4,
Second condenser 4 and first radiator 15 constitute coolant circuit,
In a heating mode, first triple valve 2, which is switched to, makes the compressor 1 be recycled via first refrigerant circuit
Refrigerant,
In cooling mode, first triple valve 2, which is switched to, makes the compressor 1 via the second refrigerant circuit cycle
Refrigerant, second condenser 4 is via the coolant circuit circulating cooling liquid.
2. heat management system as described in claim 1, which is characterized in that the compressor 1, first condenser 3, described
First electric expansion valve 5, the evaporator 6 and the gas-liquid separator 11 constitute the 5th refrigerant circuit,
Under dehumidification mode, the flow control valve 9 is closed, and first triple valve 2, which is switched to, makes the compressor 1 via institute
State the 5th refrigerant circuit circularly cooling agent.
3. heat management system as described in claim 1, which is characterized in that the heat exchanger 10, the electricity with the electric vehicle
Control 23 and motor 24 constitute motor cooling circuit,
In a heating mode, the coolant liquid of 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 battery cooler in the coolant circuit
8, the first solenoid valve 17, third triple valve 19,
One end of the battery pack 18 of the electric vehicle is coupled to the battery cooler 8 and institute by first solenoid valve 17
Between stating the second condenser 4, the other end is coupled to first radiator 15 and described second by the third triple valve 19
Between condenser 4, the battery pack 18, first radiator 15 and the battery cooler 8 constitute battery pack cooling circuit,
The compressor 1, second condenser 4, the second electric expansion valve 7 and the battery cooler 8 constitute third refrigeration
Agent circuit,
In cooling mode, second electric expansion valve 7 is opened, and makes the compressor 1 simultaneously via the second refrigerant
Circuit and the third refrigerant circuit circularly cooling agent, the conducting of the first solenoid valve 17 and the third triple valve 19 3
To conducting, the battery pack is flowed through via first solenoid valve 17 to the cooling liquid part that is flowed out from the battery cooler 8
18 with the cooling battery pack 18.
5. heat management system as claimed in claim 4, which is characterized in that first radiator 15 and the third triple valve
The 4th triple valve 14 is equipped between 19, the third end of the 4th triple valve 14 is coupled to first radiator 15 and the electricity
Between pond cooler 8,
The 5th triple valve 27 is equipped between the heat exchanger 10 and the motor 24 and automatically controlled 23 in the motor cooling circuit,
The third end of 5th triple valve 27 is coupled to the third triple valve 19 and the described 4th of the battery pack cooling circuit
Between triple valve 14, the third end of the third triple valve 19 between the battery pack 18 and first radiator 15 couples
Extremely between the 5th triple valve 27 and the motor 24 and automatically controlled 23, first solenoid valve 17 and second condenser 4
Between be equipped with second solenoid valve 20,
In the case where motor heat recovery heats battery pack mode, the 4th triple valve 14 is switched to bypass first radiator
15, the conducting of the first solenoid valve 17, the closing of the second solenoid valve 20, the third triple valve 19 and the 5th triple valve
27 are switched to that so that the battery pack 18, the motor 24, the automatically controlled 23, heat exchanger 10 and the battery cooler 8 is formed cold
But circuit, to be heated for the battery pack 18 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 heater cores 21 being set in air-conditioning box,
One end of the heater cores 21 by the 6th triple valve 16 be coupled to the battery cooler 8 and first solenoid valve 17 and
Between the tie point of the second solenoid valve 20, the other end is coupled to first solenoid valve 17 and the second solenoid valve 20
Tie point,
Under dynamo battery packet heat recovery heating pattern, first solenoid valve is opened, the second solenoid valve closes 20, institute
Stating the 6th triple valve 16, the third triple valve 19, the 5th triple valve 27 and being switched to makes the motor 24, automatically controlled 23, institute
It states heat exchanger 10, the battery cooler 8, the heater cores 21 and the battery pack 18 and forms cooling circuit, to utilize
The heat for stating battery pack 15 and the motor 24, automatically controlled 23 supplies 21 heating of the heater cores.
7. heat management system as claimed in claim 6, which is characterized in that further include the second radiator 26, second heat dissipation
The second triple valve 25 is equipped between device 26 and the motor 24, the third end of second triple valve 25 is coupled to described second and dissipates
Between hot device 26 and the heat exchanger 8,
The compressor 1, second condenser 4, the flow control valve 9, the heat exchanger 10 and the gas-liquid separator
11 constitute the 4th refrigerant circuit,
In cooling mode, the flow control valve 9 is opened, so that the refrigerant 2 is simultaneously via the second refrigerant
Circuit, the third refrigerant circuit and the 4th refrigerant circuit circularly cooling agent,
Second triple valve 25, which is switched to, makes motor cooling circuit flow through second radiator 26, the 5th triple valve
27, the third triple valve 19, which is switched to, makes the motor cooling circuit and battery pack cooling circuit disconnect.
8. heat management system as claimed in claim 4, which is characterized in that further include heating in the battery pack cooling circuit
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810872058.3A CN108749518A (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 |
|---|---|---|---|
| CN201810872058.3A CN108749518A (en) | 2018-08-02 | 2018-08-02 | A kind of heat management system of electric vehicle |
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| Publication Number | Publication Date |
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| CN108749518A true CN108749518A (en) | 2018-11-06 |
Family
ID=63968750
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810872058.3A Pending CN108749518A (en) | 2018-08-02 | 2018-08-02 | A kind of heat management system of electric vehicle |
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| CN110027386A (en) * | 2019-05-07 | 2019-07-19 | 上海理工大学 | Entire new energy automobile heat management system |
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Application publication date: 20181106 |