CN208170778U - Thermal management system of electric automobile - Google Patents
Thermal management system of electric automobile Download PDFInfo
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- CN208170778U CN208170778U CN201820759304.XU CN201820759304U CN208170778U CN 208170778 U CN208170778 U CN 208170778U CN 201820759304 U CN201820759304 U CN 201820759304U CN 208170778 U CN208170778 U CN 208170778U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a kind of thermal management system of electric automobile, including battery pack, plate heat exchanger, four-way reversing valve and the first triple valve, the both ends in the first circuit of plate heat exchanger are connect with battery pack and water pump respectively, the both ends of the second servo loop of plate heat exchanger are connect with the first electric expansion valve and shut-off valve respectively, and the first valve port of four-way reversing valve is successively connect with compressor and liquid storage device；Second valve port is connect with the inlet of the first triple valve；Third valve port is connect with liquid storage device and shut-off valve respectively；4th valve port is connect with heat-exchanging component, the connecting line of shut-off valve and plate heat exchanger is connect with the first liquid outlet of the first triple valve, second liquid outlet of the first triple valve is connect with condenser, condenser is connect with the second electric expansion valve, it is connected with cooling component between second electric expansion valve and liquid storage device, shut-off valve, is equipped with fan around heat-exchanging component.Thermal management system of electric automobile in the utility model solves the problems, such as electric car heat management low efficiency.
Description
Technical field
The utility model relates to heat management device technical fields, more particularly to a kind of thermal management system of electric automobile.
Background technique
With the increasingly deflation of petroleum-based energy deposit, various countries automaker one after another towards new energy field research and development,
To cope with possible oil crisis in the future, wherein in new energy field, electric car is the core of research and development, needs to provide
Powerful power, the continuation of the journey of long mileage and relatively light lesser bulking value are to cope with the driving demand of automobile.
However, power battery moves temperature requirement harshness, especially lithium electric car when environment temperature is lower than 0 DEG C
Power electric car internal resistance becomes larger, and there are problems that discharge power is lower and can not charge normal at this time, when excessively high in environment temperature
When, there is the danger of operation irregularity or even explosion on fire at this time, when electric car is fast in power battery interior chemical reaction aggravation
When driving, power battery needs to provide biggish output power to driving motor speed, can usually generate heat so that power battery
Temperature increase, therefore, on power vehicle be equipped with electric car thermal management control device, when power electric automobile when the temperature is excessively high,
Cool down to it；When power electric automobile temperature is too low, it is heated with can be more balanced control power electric vapour
The temperature range of vehicle.
In the prior art, the heat management mode of electric car generallys use the heat management mode of single heat dissipation or heating,
When needing to radiate, the temperature-reducing medium for use of radiating is mostly air, leads to the low efficiency that cools down, when needing to heat, heating is generallyd use
Independent heat management is such as heated using PTC, and PTC heating efficiency is lower than 1, increases cost while increasing power consumption, there is also
The risk of thermal runaway leads to electric car heat management low efficiency.
Utility model content
Based on this, the purpose of this utility model is that proposing thermal management system of electric automobile, electric car heat management is solved
The problem of low efficiency.
The utility model provides a kind of thermal management system of electric automobile, including the battery pack in automobile, plate-type heat-exchange
Device, four-way reversing valve and the first triple valve, the both ends in the first circuit of the plate heat exchanger respectively with the battery pack and
Water pump connects to form heat exchange loop, the both ends of the second servo loop of the plate heat exchanger respectively with the first electric expansion valve and cut
Only valve connects, and the first valve port of the four-way reversing valve successively connect with compressor and liquid storage device, and the of the four-way reversing valve
Two valve ports are connect with the inlet of first triple valve, the third valve port of the four-way reversing valve respectively with the liquid storage device and
Shut-off valve connection, the 4th valve port of the four-way reversing valve are connect with heat-exchanging component, the shut-off valve and described board-like are changed
The connecting line of hot device is connect with the first liquid outlet of first triple valve, the second liquid outlet of first triple valve with it is cold
Condenser connection, the condenser are connect with the second electric expansion valve, second electric expansion valve and the liquid storage device, described section
Cooling component is only connected between valve, the heat-exchanging component is set to automobile external, is equipped with fan, institute around the heat-exchanging component
It states cooling component and the condenser is set in passenger compartment.
Thermal management system of electric automobile provided by the utility model, by the first triple valve and four-way reversing valve of setting,
So that the circulation flow direction in its adjustable thermal management system of electric automobile in each pipeline, when needing to heat, control four-way is changed
It is connected to the first valve port, the second valve port of valve, third valve port, the conducting of the 4th valve port；When cooling is needed, four-way reversing valve is controlled
The first valve port, the 4th valve port conducting；When needing to passenger compartment to carry out that work is heated or cooled, the of the first triple valve of control
The conducting of two liquid outlets；When needing to battery pack to carry out that work is heated or cooled, the first liquid outlet of the first triple valve of control is led
Logical, so that its multiplexing for realizing pipeline, the integrated level of system is higher, without individually to battery pack and passenger compartment into
Row heating, cooling heat management, solve the problems, such as electric car heat management low efficiency.Simultaneously because to the heating side of battery pack
Formula is not heated using PTC, so that having saved cost, reduces the complexity of system design, and this electric car heat management system
Unite the heat pump system used the coefficient of performance it is high so that energy-efficient, it is low to solve existing heating efficiency when heating using PTC,
And the problem that energy consumption is high.Simultaneously by adjust the first triple valve aperture can realize to passenger compartment and battery pack while heating or
It is cooling, the more existing independent heat management of working efficiency it is high-efficient.Conventionally employed PTC heats air simultaneously, when the temperature is excessively high
One burning is had, when influencing the experience property of passenger, and using heat pump mode heating, does not have similar problems.
In addition, can also have following additional technology according to thermal management system of electric automobile provided by the utility model
Feature：
Further, the second triple valve, second triple valve are equipped between the battery pack and the plate heat exchanger
Inlet connect with the battery pack, the first liquid outlet of second triple valve is connect with the plate heat exchanger, described
Second liquid outlet of the second triple valve is connect with low-temperature radiator, and the low-temperature radiator is provided close to the position of the heat-exchanging component
It sets.
Further, ptc heater is equipped between the plate heat exchanger and the water pump.
Further, the both ends in the first circuit of the plate heat exchanger are equipped with temperature sensor.
Further, the cooling component includes a heating power expansion valve and the evaporator that connect with the heating power expansion valve,
The heating power expansion valve is connect with first electric expansion valve, second electric expansion valve and the heat-exchanging component respectively,
The evaporator is connect with the liquid storage device and the shut-off valve respectively.
Further, the both ends of second electric expansion valve are connected with solenoid valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the thermal management system of electric automobile that the utility model first embodiment proposes.
Fig. 2 is the structural schematic diagram that battery pack needs individually to heat in Fig. 1.
Fig. 3 is the structural schematic diagram that battery pack needs individually to cool down in Fig. 1.
Fig. 4 is the structural schematic diagram that passenger compartment needs individually to heat in Fig. 1.
Fig. 5 is the structural schematic diagram that passenger compartment needs individually to cool down in Fig. 1.
Fig. 6 is the structural schematic diagram that battery pack and passenger compartment are required to heating in Fig. 1.
Fig. 7 is that battery pack and passenger compartment are required to cooling structural schematic diagram in Fig. 1.
Fig. 8 is the structural schematic diagram for the thermal management system of electric automobile that the utility model second embodiment proposes.
Fig. 9 is to need cooling structural schematic diagram when battery pack calorific value is smaller in Fig. 8.
The structural schematic diagram that battery pack and passenger compartment need to heat when Figure 10 is heat-exchanging component frosting in Fig. 8.
Essential element symbol description
The following detailed description will be further explained with reference to the above drawings the utility model.
Specific embodiment
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing to this
The specific embodiment of utility model is described in detail.Many details are explained in the following description in order to abundant
Understand the utility model.But the utility model can be implemented with being much different from other way described herein, this field
Technical staff can do similar improvement without prejudice to the utility model connotation, therefore the utility model is not by following public affairs
The limitation for the specific implementation opened.
It should be noted that it can directly on the other element when element is referred to as " being fixedly arranged on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", "upper", "lower" and similar statement for illustrative purposes only, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.Term " and or " used herein includes one or more relevant listed items
Any and all combinations.
Referring to Fig. 1, the thermal management system of electric automobile 10 that the first embodiment of the utility model provides, including it is set to vapour
The battery pack 11 of car, plate heat exchanger (Chiller) 12, four-way reversing valve 13, the first triple valve 14, the 15, first electricity of water pump
Sub- expansion valve 16, heat-exchanging component 17, fan 18, shut-off valve 19, compressor 20, liquid storage device 21, condenser 22, the second electronic expansion
Valve 23 and cooling component 24.
Wherein, the both ends of battery pack 11 are connect with plate heat exchanger 12 and water pump 15 respectively by pipeline, the plate-type heat-exchange
Device 12 is equipped with 4 interfaces, and in pairs, every group includes an inlet and liquid outlet, forms two circuits, returns at two
High temperature fluid in Lu Zhongqi primary Ioops can transfer heat to the cryogen in another circuit, so that two circuits can be realized
The heat of middle fluid exchanges, wherein in the present embodiment, the both ends in the first circuit of plate heat exchanger 12 respectively with battery pack 11 and
Water pump 15 connects, so that its battery pack 11, plate heat exchanger 12 and water pump 15 form heat exchange loop in pipeline,
Heat exchange loop forms the flow direction of a circulation under the task driven of water pump 15, and circulate heat transferring medium in the pipeline, which is situated between
Matter is the mixture of second alcohol and water, and the heat transferring medium of circulation flow direction is exchanged heat by plate heat exchanger 12, to realize electricity
Pond packet 11 is heated or cooled.
Wherein, the both ends of the second servo loop of plate heat exchanger 12 connect with the first electric expansion valve 16 and shut-off valve 19 respectively
It connects, wherein circulate refrigerant between each pipeline connecting with the second servo loop of plate heat exchanger 12.Four-way reversing valve 13 includes
First valve port of four valve ports, four-way reversing valve 13 is successively connect with compressor 20 and liquid storage device 21, four-way reversing valve 13
Second valve port is connect with the first triple valve 14, and the third valve port of four-way reversing valve 13 connects with liquid storage device 21 and shut-off valve 19 respectively
It connects, the 4th valve port of four-way reversing valve 13 is connect with heat-exchanging component 17.Wherein, it should be pointed out that the heat-exchanging component 17 is used for
Determine that it is used to be heated or cooled according to the position for being located at compressor 20, when heat-exchanging component 17 is located at the outlet end of compressor 20
When, heat-exchanging component 17 is equivalent to condenser, and the steam for being used to compress on compressor 20 high temperature and pressure generated is condensed into height
The refrigerant liquid of warm high pressure.When heat-exchanging component 17 is located at the input end of compressor 20, heat-exchanging component 17 is equivalent to evaporation
Device is used to for the refrigerant liquid of low-temp low-pressure being evaporated to the steam of low-temp low-pressure.
Wherein, in the present embodiment, which is diversion three-way valve, goes out liquid comprising an inlet and two
Mouthful, specifically, the inlet of first triple valve 14 is connect with the second valve port of four-way reversing valve 13, first triple valve 14
First liquid outlet is connect with the connecting line that shut-off valve 19 and plate heat exchanger 12 are connected, and the of first triple valve 14
Two liquid outlets are connect with condenser 22.
Wherein, condenser 22 is connect with the second electric expansion valve 23, the second electric expansion valve 23 and liquid storage device 21, shut-off valve
Cooling component 24 is connected between 19, which includes a heating power expansion valve 241 and connect with heating power expansion valve 241
Evaporator 242, further, the heating power expansion valve 241 are connect with the second electric expansion valve 23, the evaporator 242 and liquid storage device
21, shut-off valve 19 connects.
Specifically, one end of the second servo loop of plate heat exchanger 12 is connect with one end of the first electric expansion valve 16, first
The other end of electric expansion valve 16 is swollen with one end of heat-exchanging component 17, one end of the second electric expansion valve 23 and heating power respectively
One end of swollen valve 241 connects, and the other end of heat-exchanging component 17 is connect with the 4th valve port of four-way reversing valve 13, the second electronic expansion
The other end of valve 23 is connect with one end of condenser 22, and the other end of heating power expansion valve 241 is connect with one end of evaporator 242,
The other end of condenser 22 is connect with the second liquid outlet of the first triple valve 14.
The other end of the second servo loop of plate heat exchanger 12 respectively with the first liquid outlet of triple valve and shut-off valve 19 one
End connection, the other end of shut-off valve 19 respectively with the third valve port of four-way reversing valve 13, one end of liquid storage pipe and evaporator
242 other end connection, the other end of liquid storage device 21 are connect with one end of compressor 20, and the other end and the four-way of compressor 20 change
It is connected to the first valve port of valve 13.
Wherein heat-exchanging component 17 is set to automobile external, and fan 18,24 He of cooling component are equipped with around heat-exchanging component 17
Condenser 22 is set in automobile passenger compartment.Wherein it is set to the cooling component 24 (evaporator 242 and heating power expansion valve 241) of passenger compartment
An air handling system (HVAC) is formed in passenger compartment with condenser 22, for adjusting the temperature in passenger compartment.
Wherein, when battery pack 11 needs individually to heat, as shown in Fig. 2, the first valve port of its four-way reversing valve 13 and
The connection of two valve ports, third valve port and the connection of the 4th valve port.Its first triple valve 14 is connected to its first liquid outlet, at this time compressor
20, four-way reversing valve 13, triple valve, plate heat exchanger 12, the first electric expansion valve 16, heat-exchanging component 17 and liquid storage device 21
Constitute a battery pack heating circuit.Its compressor 20 is started to work, at this time that the low-temp low-pressure in refrigerant is steam compressed supreme
Warm high pressure conditions, compressor 20 compress the first valve port, the second valve port that high temperature and high pressure steam out passes through four-way reversing valve 13
The inlet of the first triple valve 14 is entered to afterwards, and is flowed out from the first liquid outlet of the first triple valve 14, high temperature and high pressure steam
When flowing through plate heat exchanger 12, plate heat exchanger 12 hands over the heat of the heat of battery pack heating circuit and heat exchange loop
It changes, so that the heat exchange medium temperature in heat exchange loop increases, battery pack 11 is flowed through by heat transferring medium circulation, so that battery pack
11 temperature increases, and realizes the heating to battery pack 11.Wherein in battery pack heating circuit, in the heat exchange of plate heat exchanger 12
Afterwards, high temperature and high pressure steam becomes the liquid of medium temperature high pressure, flows through the system for becoming low-temp low-pressure after the first electric expansion valve 16
Cryogen liquid flows through the heat-exchanging component 17 outside vehicle, and heat-exchanging component 17 is located at the input end close to compressor 20 at this time,
Heat-exchanging component 17 is equal to evaporator, and the effect of the heat-exchanging component 17 at this time is low for the refrigerant liquid of low-temp low-pressure to be evaporated to
Press steam, wherein since the work of heat-exchanging component 17 is incomplete, also press from both sides from the low temperature and low pressure steam that its heat-exchanging component 17 flows out
Miscellaneous a small amount of refrigerant liquid, after flowing through the second valve port of four-way reversing valve 13, third valve port at this time, a small amount of refrigerant
Liquid flows into liquid storage device 21, and low temperature and low pressure steam flows into compressor 20, so that work on will be low for compressor 20
Warm low-pressure steam boil down to high temperature and high pressure steam realizes the cycle operation of battery pack heating circuit, to realize persistently to battery pack
11 are heated, wherein it should be pointed out that the liquid storage device 21 is for storing the refrigerant liquid flowed out from heat-exchanging component 17
Body causes liquid hammer to prevent refrigerant liquid from flowing into compressor 20, refrigerant liquid is avoided to damage compressor 20
Problem.
Wherein, when battery pack 11 needs independent cooling, as shown in figure 3, its four-way reversing valve 13 is converted to the first valve port
It is connected to the 4th valve port.Compressor 20, four-way reversing valve 13, heat-exchanging component 17, the first electric expansion valve 16, plate-type heat-exchange at this time
Device 12, shut-off valve 19 and liquid storage device 21 constitute a battery pack cooling circuit, and compressor 20 is started to work, will be in refrigerant
Low-temp low-pressure is steam compressed to high-temperature high-pressure state, and compressor 20 compresses high temperature and high pressure steam out and flows through four-way reversing valve 13
The first valve port, enter to heat-exchanging component 17 after the 4th valve port, heat-exchanging component 17 is located at close to the outlet end of compressor 20 at this time,
Its heat-exchanging component 17 is equal to condenser, the refrigeration that heat-exchanging component 17 will be used for high temperature and high pressure steam and be condensed into medium temperature high pressure at this time
Agent liquid, the refrigerant liquid of medium temperature high pressure flow through the refrigerant liquid for becoming low-temp low-pressure after the first electric expansion valve 16,
When its low-temperature low-pressure refrigerant liquid flows through plate heat exchanger 12, plate heat exchanger 12 is by the heat and battery pack of heat exchange loop
The heat of cooling circuit swaps, so that the heat exchange medium temperature in heat exchange loop reduces, passes through heat transferring medium recycle stream
Through battery pack 11, so that the temperature of battery pack 11 reduces, the cooling to battery pack 11 is realized.Wherein in battery pack cooling circuit
In, it is acted on by the heat exchange of plate heat exchanger 12, the refrigerant liquid heat exchange of low-temp low-pressure is for a large amount of steam and on a small quantity
Refrigerant liquid, wherein in the battery pack cooling circuit, shut-off valve 19 is opened, and steam and a small amount of refrigerant liquid flow through
Liquid storage device 21 is reached after shut-off valve 19, refrigerant liquid flows into liquid storage device 21, steam flow into compressor 20 into
It is converted into high temperature and high pressure steam after row compression, realizes the cycle operation of battery pack cooling circuit, to realize persistently to battery pack
11 are cooled down.
Wherein, when passenger compartment needs individually heating, as shown in figure 4, the first valve port of its four-way reversing valve 13 and second
Valve port connection, third valve port and the connection of the 4th valve port.Its first triple valve 14 be connected to its second liquid outlet, at this time compressor 20,
Four-way reversing valve 13, triple valve, condenser 22, the second electric expansion valve 23, heat-exchanging component 17 and liquid storage device 21 constitute one and multiply
Main cabin heating circuit.The start-up operation of its compressor 20 generates the low-temp low-pressure in refrigerant is steam compressed to high temperature and pressure shape
State, compressor 20 compress high temperature and high pressure steam out and enter to after the first valve port of four-way reversing valve 13, the second valve port
The inlet of first triple valve 14, and flowed out from the second liquid outlet of the first triple valve 14, the high temperature and high pressure steam stream of outflow
High-temperature high-pressure refrigerant liquid is condensed into after condenser 22, and its 22 condensation process of condenser is exothermic process, so that its is cold
Condenser 22 increases the temperature of passenger compartment, realizes the heating of passenger compartment, it is swollen that high-temperature high-pressure refrigerant liquid flows through the second electronics
After swollen valve 23, it is converted into the refrigerant liquid of low-temp low-pressure, when the refrigerant liquid of low-temp low-pressure flows through heat-exchanging component 17,
Heat-exchanging component 17 is located at the input end close to compressor 20, and heat-exchanging component 17 is equal to evaporator, at this time the heat-exchanging component 17
Effect be the refrigerant liquid of low-temp low-pressure to be evaporated to low temperature and low pressure steam, and flow into compressor 20, realize passenger
The cycle operation of cabin heating circuit, some refrigerant liquid that wherein heat-exchanging component 17 flows out flow into liquid storage device 21.
Wherein, when passenger compartment needs individually cooling, as shown in figure 5, the conversion of its four-way reversing valve 13 to the first valve port and
The connection of 4th valve port.At this time compressor 20, four-way reversing valve 13, heat-exchanging component 17, heating power expansion valve 241, evaporator 242 and
Liquid storage device 21 constitutes a passenger compartment cooling circuit, and shut-off valve 19 is in close state at this time.Its compressor 20 is started to work, and will be made
Low-temp low-pressure in cryogen is steam compressed to high-temperature high-pressure state, and compressor 20 compresses high temperature and high pressure steam out and flows through four-way
Heat-exchanging component 17 is entered to after first valve port of reversal valve 13, the 4th valve port, heat-exchanging component 17 is located at close to compressor 20 at this time
Outlet end, heat-exchanging component 17 is equal to condenser, and heat-exchanging component 17 will be used for high temperature and high pressure steam and be condensed into medium temperature at this time
The refrigerant liquid of high pressure, wherein since what is be connected with heat-exchanging component 17 has the first electric expansion valve 16, the second electronic expansion
Valve 23 and heating power expansion valve 241, wherein being cut at this time due to being equipped with shut-off valve 19 in the circuit that connect with the first electric expansion valve 16
Only valve 19 is closed, therefore the refrigerant liquid flowed out by heat-exchanging component 17 is without the first electric expansion valve 16；Wherein due to
Second electric expansion valve 23 cannot constitute circuit, therefore the refrigerant liquid flowed out by heat-exchanging component 17 is swollen without the second electronics
Swollen valve 23, therefore the refrigerant liquid for having heat-exchanging component 17 to flow out all flows into heating power expansion valve 241, medium temperature high pressure
Refrigerant liquid flows through the refrigerant liquid for becoming low-temp low-pressure after heating power expansion valve 241, low-temperature low-pressure refrigerant liquid flow
When through evaporator 242, low-temperature low-pressure refrigerant liquid evaporation is low temperature and low pressure steam by evaporator 242, wherein evaporator 242
Evaporation process is endothermic process, so that its evaporator 242 is cooling by the temperature of passenger compartment, realizes the cooling of passenger compartment, low temperature
Low-pressure steam flows into compressor 20, realizes the cycle operation of passenger compartment cooling circuit, the part that wherein evaporator 242 flows out
Refrigerant liquid flows into liquid storage device 21.
Wherein, when passenger compartment and battery pack 11 are required to heating, as shown in fig. 6, the first valve of its four-way reversing valve 13
Mouth is connected to the second valve port, third valve port and the connection of the 4th valve port.Its first triple valve 14 is connected to its first liquid outlet and second
Liquid outlet, at this time compressor 20, four-way reversing valve 13, triple valve, plate heat exchanger 12, the first electric expansion valve 16, heat exchange group
Part 17 and liquid storage device 21 constitute a battery pack heating circuit.Its first triple valve 14 is connected to its second liquid outlet, compresses at this time
Machine 20, four-way reversing valve 13, triple valve, condenser 22,21 structure of the second electric expansion valve 23, heat-exchanging component 17 and liquid storage device
At a passenger compartment heating circuit.And the aperture by adjusting the first triple valve 14 can be realized to passenger compartment heating circuit and battery pack
The input of the different refrigeration doses of heating circuit.When work, the high temperature and high pressure steam flowed out from compressor 20 is changed by four-way
Enter to the inlet of the first triple valve 14 after to the first valve port, the second valve port of valve 13, and from the first of the first triple valve 14
Liquid outlet and the outflow of the second liquid outlet, wherein by the refrigerant vapour recycle stream flowed out after the first liquid outlet of the first triple valve 14
Through battery pack heating circuit, for after plate heat exchanger 12 is exchanged heat, to be heated to battery pack 11；It flows through first
The refrigerant vapour circulation flowed out after second liquid outlet of triple valve 14 flows through passenger compartment heating circuit, for carrying out to passenger compartment
Heating.
Wherein, when passenger compartment and battery pack 11 are required to cooling, as shown in fig. 7, the conversion of its four-way reversing valve 13 is to the
One valve port and the connection of the 4th valve port.Compressor 20, four-way reversing valve 13, heat-exchanging component 17, the first electric expansion valve 16, plate at this time
Formula heat exchanger 12, shut-off valve 19 and liquid storage device 21 constitute a battery pack cooling circuit, and compressor 20, changes four-way reversing valve 13
Hot component 17, heating power expansion valve 241, evaporator 242 and liquid storage device 21 constitute a passenger compartment cooling circuit, at this time shut-off valve 19
It is in the open state, and the aperture by adjusting the first triple valve 14 can be realized and be heated back to passenger compartment heating circuit and battery pack
The input of the different refrigeration doses on road.When work, the high temperature and high pressure steam flowed out from compressor 20 passes through four-way reversing valve 13
The first valve port, enter to heat-exchanging component 17 after the 4th valve port, and after the heat exchange of heat-exchanging component 17, heat-exchanging component 17 is exported
The refrigerant liquid of medium temperature high pressure, since what is be connected with heat-exchanging component 17 has the first electric expansion valve 16, the second electronic expansion
Valve 23 and heating power expansion valve 241, and shut-off valve 19 is in the open state, therefore, flows through the refrigerant of the first electric expansion valve 16
Liquid circulation flows through after plate heat exchanger 12 exchanged heat, and heats to battery pack 11, flows through the refrigeration of heating power expansion valve 241
After agent liquid circulation flows through passenger compartment cooling circuit, passenger compartment is cooled down.
Thermal management system of electric automobile 10 provided by the utility model is commutated by the first triple valve 14 and four-way of setting
Valve 13, so that the circulation flow direction in its adjustable thermal management system of electric automobile 10 in each pipeline, when needing to heat, control
First valve port of four-way reversing valve 13, the conducting of the second valve port, third valve port, the conducting of the 4th valve port；When cooling is needed, four are controlled
First valve port of logical reversal valve 13, the conducting of the 4th valve port；When needing to passenger compartment to carry out that work is heated or cooled, control first
Second liquid outlet of triple valve 14 is connected；When needing to battery pack 11 to carry out that work is heated or cooled, the first triple valve is controlled
14 the first liquid outlet conducting, so that its multiplexing for realizing pipeline, the integrated level of system is higher, without individually right
The heat management that battery pack 11 and passenger compartment are heated, cooled down solves the problems, such as electric car heat management low efficiency.While by
It is not heated using PTC in the heating method to battery pack 11, so that having saved cost, reduces the complexity of system design,
And the coefficient of performance of the heat pump system of the use of this thermal management system of electric automobile 10 is high, so that it is energy-efficient, solve existing use
Heating efficiency when PTC is heated is low, and the problem that energy consumption is high.It can be realized by adjusting the aperture of the first triple valve 14 to multiplying simultaneously
Be heated or cooled while main cabin and battery pack, the more existing independent heat management of working efficiency it is high-efficient.It is conventionally employed simultaneously
PTC heats air, has one burning when the temperature is excessively high, when influencing the experience property of passenger, and using heat pump mode heating, no
Have similar problems.
Referring to Fig. 8, the thermal management system of electric automobile 10a that the second embodiment of the utility model provides, with first
Embodiment is more or less the same, the difference is that, in the present embodiment, the two or three is equipped between battery pack 11 and plate heat exchanger 12
The inlet of port valve 25, second triple valve 25 is connect with battery pack 11, and the first liquid outlet of the second triple valve 25 is changed with board-like
Hot device 12 connects, and the second liquid outlet of the second triple valve 25 is connect with low-temperature radiator 26, in plate heat exchanger 12 and water pump 15
Between be equipped with ptc heater 27, the low-temperature radiator 26 and plate heat exchanger 12 are connect with ptc heater 27, specifically, the plate
First circuit inlet of formula heat exchanger 12 is connect with the first liquid outlet of the second triple valve 25, and the second of the second triple valve 25 goes out
Liquid mouth is connect with one end of low-temperature radiator 26, the other end of low-temperature radiator 26 and the first circuit feed liquor of plate heat exchanger 12
Mouthful connect with one end of ptc heater 27, the other end of ptc heater 27 is connect with one end of water pump 15, water pump 15 it is another
End is connect with battery pack 11.Wherein, low-temperature radiator 26 is provided close to the position of heat-exchanging component 17.
Further, the both ends in the first circuit of the plate heat exchanger 12 are equipped with temperature sensor 28, and the second electronics is swollen
The both ends of swollen valve 23 are connected with solenoid valve 29.
Wherein, when battery pack 11 needs independent cooling, and battery pack 11 calorific value it is little when, as shown in figure 9, its second
Triple valve 25 be connected to its second liquid outlet, at this time battery pack 11, the second triple valve 25, low-temperature radiator 26, ptc heater 27,
And water pump 15 forms battery pack heat-radiation loop, wherein ptc heater 27 is in close state, at this time since the driving of water pump 15 is made
With the heat transferring medium in battery pack heat-radiation loop flows through low-temperature radiator 26 by battery pack 11, passes through low temperature radiation at this time
Fan 18 at device 26 works, so that a small amount of heat generated by battery pack 11 is taken away.Low temperature is passed through to dissipate
The heat of heat transferring medium after hot device 26 reduces, so that sustainable circulation is that battery pack 11 carries out cooling heat.
Wherein, when battery pack 11 is heated or cooled, the second triple valve 25 is connected to its first liquid outlet, this
When battery pack 11, the second triple valve 25, ptc heater 27 and water pump 15 form heat exchange loop, realize that effect is real with first
It is more or less the same to apply example, it will not be described here.
Specifically, there is the phenomenon that frosting in the heat-exchanging component 17 being easy to appear outside vehicle under the biggish operating condition of low temperature humidity,
The heat-exchanging component 17 outside vehicle loses exchange capability of heat substantially at this time, at this time when battery pack 11 and passenger compartment are heated,
As shown in Figure 10, the second triple valve 25 is connected to its second liquid outlet, at this time battery pack 11, the second triple valve 25, low temperature radiation
Device 26, ptc heater 27 and water pump 15 form the first heating circuit, and wherein ptc heater 27 is in running order, and PTC adds
Hot device 27 heats heat transferring medium so that the temperature of heat transferring medium increases, and by under the driving effect of water pump 15 to battery pack 11 into
Row heating, meanwhile, when the heat transferring medium after being heated by ptc heater 27 with heat flows through low-temperature radiator 26, pass through wind
The work of fan 18 reaches heat exchanging group so that the heat in low-temperature radiator 26 to be blown to the surface of the heat-exchanging component 17 outside vehicle
The defrosting effect of part 17.
Wherein, the first valve port of four-way reversing valve 13 and the connection of the second valve port, third valve port and the connection of the 4th valve port.Its
First triple valve 14 is connected to its second liquid outlet, at this time compressor 20, four-way reversing valve 13, triple valve, condenser 22, solenoid valve
29, heating power expansion valve 241, evaporator 242 and liquid storage device 21 constitute one second heating circuit.It is flowed out from compressor 20
High temperature and high pressure steam enters to the inlet of the first triple valve 14 after the first valve port of four-way reversing valve 13, the second valve port,
And flowed out from the second liquid outlet of the first triple valve 14, the high temperature and high pressure steam of outflow is condensed into high temperature after flowing through condenser 22
High pressure refrigerant liquid, and its 22 condensation process of condenser is exothermic process, so that its condenser 22 is by the temperature liter of passenger compartment
Height realizes the heating of passenger compartment.The solenoid valve 29 is connected at this time, and high-temperature high-pressure refrigerant liquid flows through solenoid valve 29, cocurrent
Enter into heating power expansion valve 241, high-temperature high-pressure refrigerant liquid is converted low-temperature low-pressure refrigerant liquid by heating power expansion valve 241
Low-temperature low-pressure refrigerant liquid is converted low temperature and low pressure steam by body, evaporator 242, and flows into compressor 20, realizes
The cycle operation of second heating circuit.Wherein, it should be pointed out that the inside of its automobile is equipped with damper, when being made
When heat pattern, damper blocks the evaporator 242, so that the heat that the condensation of its condenser 22 generates is blowed to by blower and multiplied
Main cabin.When carrying out refrigeration mode, damper blocks the condenser 22, so that the evaporation of its evaporator 242 absorbs heat
So that peripheral temperature, which reduces and passes through blower, blows to passenger compartment.At this time when passenger compartment and battery pack 11 are both needed to heating, air door
Baffle shelters from evaporator 242, so that the heat that its condenser 22 generates blows to passenger compartment by blower, realizes passenger compartment
Cooling.
When the work for passing through fan 18, so that the heat in low-temperature radiator 26 to be blown to the table of the heat-exchanging component 17 outside vehicle
Face, so that the heating of passenger compartment is converted into passenger compartment by existing second heating circuit and adds when 17 complete defrost of heat-exchanging component
The heating of hot loop, battery pack 11 is converted into battery pack heating circuit by existing first heating circuit or battery pack radiates back
Road (ptc heater 27 stops working).
Wherein, it should be pointed out that in the present embodiment, it is equipped with temperature sensor 28 positioned at the both ends of plate heat exchanger 12,
In the present embodiment, specially the first temperature sensor 281 and second temperature sensor 282, wherein the first temperature sensor 281 leans on
One end of nearly second triple valve 25, for detecting the temperature of the heat transferring medium flowed out from battery pack 11；Its second temperature sensor
282 close to 27 one end of ptc heater, for detecting the temperature of the heat transferring medium flowed out from plate heat exchanger 12.
Two temperature sensors 28 are electrically connected with controller (not shown), controller and compressor 20, four-way reversing valve
13, the first electric expansion valve 16, the second electric expansion valve 23, the first triple valve 14 and the electrical connection of the second triple valve 25, wherein
When the first temperature sensor 281 is detected lower than first threshold, i.e. when the calorific value of battery pack 11 is little, controller is issued
Control signal to the second triple valve 25, so that the second triple valve 25 is connected to the second liquid outlet, when the first temperature sensor 281 is examined
It measures lower than second threshold (temperature is lower), controller as shown in the first embodiment controls each electronic device accordingly with reality
Now to the heating of battery pack 11, so that 11 temperature of battery pack reaches rated temperature range.When the first temperature sensor 281 detects
Higher than third threshold value (temperature is higher), controller as shown in the first embodiment controls each electronic device accordingly to realize pair
The cooling of battery pack 11, so that 11 temperature of battery pack reaches rated temperature range.
Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (6)
1. a kind of thermal management system of electric automobile, which is characterized in that including the battery pack in automobile, plate heat exchanger, four
Logical reversal valve and the first triple valve, the both ends in the first circuit of the plate heat exchanger connect with the battery pack and water pump respectively
It connects to form heat exchange loop, the both ends of the second servo loop of the plate heat exchanger connect with the first electric expansion valve and shut-off valve respectively
It connects, the first valve port of the four-way reversing valve is successively connect with compressor and liquid storage device, the second valve port of the four-way reversing valve
Connect with the inlet of first triple valve, the third valve port of the four-way reversing valve respectively with the liquid storage device and described section
Only valve connects, and the 4th valve port of the four-way reversing valve connect with heat-exchanging component, the shut-off valve and the plate heat exchanger
Connecting line is connect with the first liquid outlet of first triple valve, and the second liquid outlet and condenser of first triple valve connect
Connect, the condenser is connect with the second electric expansion valve, second electric expansion valve and the liquid storage device, the shut-off valve it
Between be connected with cooling component, the heat-exchanging component is set to automobile external, is equipped with fan, the cooling around the heat-exchanging component
Component and the condenser are set in passenger compartment.
2. thermal management system of electric automobile according to claim 1, which is characterized in that the battery pack and described board-like change
The second triple valve is equipped between hot device, the inlet of second triple valve is connect with the battery pack, second triple valve
The first liquid outlet connect with the plate heat exchanger, the second liquid outlet of second triple valve is connect with low-temperature radiator,
The low-temperature radiator is provided close to the position of the heat-exchanging component.
3. thermal management system of electric automobile according to claim 1, which is characterized in that the plate heat exchanger and the water
Ptc heater is equipped between pump.
4. thermal management system of electric automobile according to claim 2, which is characterized in that first time of the plate heat exchanger
The both ends on road are equipped with temperature sensor.
5. thermal management system of electric automobile according to claim 1, which is characterized in that the cooling component includes a heating power
Expansion valve and the evaporator being connect with the heating power expansion valve, the heating power expansion valve respectively with first electric expansion valve,
Second electric expansion valve is connected with the heat-exchanging component, and the evaporator connects with the liquid storage device and the shut-off valve respectively
It connects.
6. thermal management system of electric automobile according to claim 1, which is characterized in that the two of second electric expansion valve
End is connected with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759304.XU CN208170778U (en) | 2018-05-21 | 2018-05-21 | Thermal management system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759304.XU CN208170778U (en) | 2018-05-21 | 2018-05-21 | Thermal management system of electric automobile |
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| CN208170778U true CN208170778U (en) | 2018-11-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592441A (en) * | 2018-05-21 | 2018-09-28 | 江西江铃集团新能源汽车有限公司 | Thermal management system of electric automobile |
| CN111376671A (en) * | 2018-12-27 | 2020-07-07 | 北京宝沃汽车有限公司 | Control method and device for heating system of hybrid vehicle and vehicle |
| US20210138426A1 (en) * | 2019-11-13 | 2021-05-13 | Hepatochem Inc. | Photochemistry device |
| CN112909374A (en) * | 2021-02-05 | 2021-06-04 | 扬州嘉和新能源科技有限公司 | Control method for new energy automobile battery water cooling unit system |
| WO2023249198A1 (en) * | 2022-06-22 | 2023-12-28 | 한국자동차연구원 | Battery heat management system for electric vehicle |
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2018
- 2018-05-21 CN CN201820759304.XU patent/CN208170778U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108592441A (en) * | 2018-05-21 | 2018-09-28 | 江西江铃集团新能源汽车有限公司 | Thermal management system of electric automobile |
| CN111376671A (en) * | 2018-12-27 | 2020-07-07 | 北京宝沃汽车有限公司 | Control method and device for heating system of hybrid vehicle and vehicle |
| CN111376671B (en) * | 2018-12-27 | 2021-09-07 | 北京宝沃汽车有限公司 | Control method and device for heating system of hybrid vehicle and vehicle |
| US20210138426A1 (en) * | 2019-11-13 | 2021-05-13 | Hepatochem Inc. | Photochemistry device |
| US11992819B2 (en) * | 2019-11-13 | 2024-05-28 | Hepatochem Inc. | Photochemistry device with a plurality of UV and visible light sources that carry out photocatalytic reactions |
| CN112909374A (en) * | 2021-02-05 | 2021-06-04 | 扬州嘉和新能源科技有限公司 | Control method for new energy automobile battery water cooling unit system |
| CN112909374B (en) * | 2021-02-05 | 2024-02-20 | 扬州嘉和新能源科技有限公司 | New energy automobile battery water cooling unit system control method |
| WO2023249198A1 (en) * | 2022-06-22 | 2023-12-28 | 한국자동차연구원 | Battery heat management system for electric vehicle |
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