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CN108382161B - A heating and cooling method using a secondary circuit air conditioning heat pump system - Google Patents

A heating and cooling method using a secondary circuit air conditioning heat pump system Download PDF

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CN108382161B
CN108382161B CN201810338626.1A CN201810338626A CN108382161B CN 108382161 B CN108382161 B CN 108382161B CN 201810338626 A CN201810338626 A CN 201810338626A CN 108382161 B CN108382161 B CN 108382161B
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way valve
plate
evaporator
battery pack
passes
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CN108382161A (en
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兰娇
苏林
朱悦
方奕栋
李康
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University of Shanghai for Science and Technology
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University of Shanghai for Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392Air-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/615Heating or keeping warm
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567Liquids
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/66Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507Details, e.g. mounting arrangements, desaeration devices
    • B60H2001/00614Cooling of electronic units in air stream
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60HARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H2001/00957Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices comprising locations with heat exchange within the refrigerant circuit itself, e.g. cross-, counter-, or parallel heat exchange
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

本发明提供了一种采用二次回路空调热泵系统的制热制冷方法,系统包括:制冷剂回路、冷端冷却液回路、热端冷却液回路。制冷剂回路包含电动压缩机、板式冷凝器、节流装置和板式蒸发器。冷端冷却液回路与板式蒸发器连接,蒸发器端将冷传给冷却液,冷却液通过泵输送给室内的冷却器,可实现制冷模式,冷凝器端的热量通过室外的散热器排到室外。热端冷却液回路与板式冷凝器连接,冷凝器端将热传给冷却液,冷却液通过泵输送给室内的加热器,实现加热模式,此时蒸发器端的冷量通过室外的散热器排到室外。同时通过切换冷却液回路可实现除湿功能。本发明可有效避免制冷剂与乘员舱接触,能够对电动汽车的电池包进行温度控制,同时可对多余热量进行回收利用。

Figure 201810338626

The invention provides a heating and cooling method using a secondary circuit air-conditioning heat pump system. The system includes a refrigerant circuit, a cold-end cooling liquid circuit, and a hot-end cooling liquid circuit. The refrigerant circuit contains an electric compressor, a plate condenser, a throttling device and a plate evaporator. The cold end coolant circuit is connected to the plate evaporator, the evaporator end transfers the cold to the cooling fluid, and the cooling fluid is pumped to the indoor cooler, which can realize the cooling mode, and the heat of the condenser end is discharged to the outdoor through the outdoor radiator. The hot-end coolant circuit is connected to the plate condenser, the condenser end transfers heat to the coolant, and the coolant is pumped to the indoor heater to realize the heating mode. At this time, the cooling capacity of the evaporator end is discharged through the outdoor radiator to the outdoor. At the same time, the dehumidification function can be realized by switching the coolant circuit. The invention can effectively avoid the contact between the refrigerant and the passenger compartment, can control the temperature of the battery pack of the electric vehicle, and at the same time can recycle the excess heat.

Figure 201810338626

Description

Heating and refrigerating method adopting secondary loop air-conditioning heat pump system
Technical Field
The invention belongs to an air conditioning system of an electric automobile, and particularly relates to a heating and refrigerating method adopting a secondary loop air conditioning heat pump system.
Background
In consideration of global warming and carbon dioxide emission, motor vehicle emission regulations are becoming stricter and new energy electric vehicles are becoming a necessary trend. As the greenhouse effect is more and more serious, the replacement of a novel refrigerant ODP less than or equal to 150 in the air conditioner of the new energy automobile is a common focus of attention. The following table is a potential refrigerant comparison. It can be seen that the refrigerants have different degrees of flammability, except for carbon dioxide, which is not flammable. At present, the problem of serious leakage of the carbon dioxide exists in the air conditioning system due to the problem of high pressure of the carbon dioxide, so that the carbon dioxide refrigerant is limited in practical use. When other flammable refrigerants are used, the leakage problem needs to be solved, and the leakage problem is mainly solved according to the situation that once the leakage occurs, the leakage cannot affect passengers in the passenger compartment.
Figure GDA0002855178190000011
Table 1 comparison of refrigerants with replacement potential
The secondary loop system is utilized to ensure that the refrigerant loop does not directly contact with the passenger cabin, but the temperature of the air in the air conditioning box is controlled by the cooling liquid, so that the refrigerant can be effectively prevented from entering the passenger cabin when the refrigerant leaks, and if a fire source exists in the passenger cabin, the personal safety of personnel in the passenger cabin can be avoided.
Meanwhile, the power system of the electric automobile is driven by the battery, but the battery is particularly sensitive to temperature when working, and the battery performance is affected when the temperature is too high or too low. The operating range of the battery is typically: 10-30 ℃.
FIG. 1 shows a schematic diagram of cooling and heating of batteries and electronic devices in a temperature range (references Weustenfeldt TA, Bauer-Kugelmann W, Menken J C, et al. Since heat generation in electronic equipment is high, temperature control is always required for cooling, and if the waste heat of the electronic equipment can be recovered and utilized in winter, the utilization rate of energy is also improved.
Fig. 2 is a diagram of a direct refrigeration system commonly used in the prior art, in which 1 is an air conditioning cabinet, 2 is a heater of the air conditioning cabinet, 3 is a cooler of the air conditioning cabinet, 4 is an expansion valve, 5 is a three-way valve, 6 is a compressor, and 7 is an outdoor heat exchanger. The refrigerant directly enters a cooler in the air-conditioning box to exchange heat with air. If the refrigerant is flammable, the refrigerant of the air conditioning box directly contacts with the passenger cabin and is diffused into the passenger cabin once leakage occurs, and life threat is caused to passengers.
Disclosure of Invention
The invention relates to a secondary loop air-conditioning heat pump system, which is characterized in that on one hand, aiming at the situation that most of refrigerants are flammable refrigerants when the refrigerants of an air-conditioning system of an electric automobile are replaced, a secondary cooling liquid loop is utilized to isolate a refrigerating system from a passenger cabin, and if the flammable refrigerants are leaked, the refrigerants cannot enter the safety of passengers in the passenger cabin in a carriage crisis. On the other hand, since the power system of the electric vehicle is driven by the battery, the temperature has a great influence on the performance of the battery, and the battery is controlled by the form of the secondary cooling liquid, so that the battery can exert the best performance when in operation. Meanwhile, refrigeration, heating, single evaporator defrosting and multi-evaporator defrosting can be realized by switching a four-way valve and a three-way valve in secondary cooling liquid.
The system design scheme of the invention comprises the following components:
(1) a refrigerant circuit: the plate-type condenser comprises a hot end, a high-temperature high-pressure gas refrigerant is changed into a high-temperature high-pressure liquid refrigerant after the condenser releases heat, and the released heat is transferred to a hot end cooling liquid through a heat exchanger. The low-temperature low-pressure gas-liquid mixed refrigerant is changed into a low-temperature low-pressure gaseous refrigerant after being released with cold energy through the evaporator, and the released cold energy is transmitted to the cold-end cooling liquid through the heat exchanger. The electric compressor absorbs gaseous refrigerant from the outlet of the evaporator, compresses the refrigerant, and discharges the compressed refrigerant to the condenser.
(2) Cold side coolant loop: the cooling liquid loop at the cold end is connected with the evaporator, and the cooling liquid is conveyed to the cooler in the air conditioning box through the pump to control the temperature of the passenger compartment. When the battery needs to be refrigerated, the cooling liquid passes through the battery pack to control the temperature of the battery.
(3) Hot side coolant loop: and a cooling liquid loop at the hot end is connected with a condenser, and the cooling liquid is conveyed to a middle heater of the air conditioning box through a pump to control the temperature of the passenger compartment. When the battery needs to be heated, the cooling liquid passes through the battery pack to control the temperature of the battery.
Further, the compressor in the refrigerant circuit of the secondary circuit air conditioning heat pump system is an electric compressor.
Furthermore, the secondary loop air-conditioning heat pump system comprises an electrically driven water pump, and the hot end cooling liquid loop and the cold end cooling liquid loop respectively complete a completed cycle through the water pump.
Furthermore, an inlet of a throttling device in a refrigerant loop of the secondary loop air-conditioning heat pump system is connected with an outlet of the plate-type condenser, and an outlet of the throttling device is connected with an inlet of the plate-type evaporator.
Furthermore, a secondary loop of the secondary loop air-conditioning heat pump system consists of a first four-way valve, a second four-way valve, a first three-way valve, a second three-way valve, a third three-way valve, a first pump, a second pump, a cooler, a heater, an outdoor radiator and an air-conditioning box, and the refrigeration, heating and dehumidification modes can be realized by switching the positions of the three-way valve or the four-way valve.
Further, when the secondary loop air-conditioning heat pump system is switched to a refrigeration mode, cold-end cooling liquid flows out of the plate-type evaporator, passes through a water pump, a first three-way valve, is cooled indoors, passes through a second three-way valve, cools a battery pack, passes through a second four-way valve and a third three-way valve, cools a motor in the electric automobile, controls temperature, and then returns to a cooling liquid inlet of the plate-type evaporator; the hot end cooling liquid flows out of the plate type condenser, passes through the water pump, passes through the first four-way valve to reach an outdoor radiator, and returns to the inlet of the plate type condenser through the second four-way valve after redundant heat is removed. Thus, in the cooling mode, the hot side and the cold side cooling liquid complete a complete cycle.
Further, when the secondary loop air-conditioning heat pump system is switched into a heating mode, the hot end cooling liquid comes out of the plate type and passes through the water pump and the first four-way valve to reach a heater in the air-conditioning box, and at the moment, after the cooling liquid heats the battery pack for temperature control, the cooling liquid returns to the inlet of the plate type condenser through the second four-way valve; the cold end cooling liquid comes out from the plate evaporator, passes through the first pump, the first tee joint, the first four-way valve, and then passes through the second four-way valve and the third three-way valve, and returns to the cooling liquid inlet of the plate evaporator after the temperature of the motor in the electric automobile is controlled. Thus, the cooling liquid at the hot end and the cooling liquid at the cold end complete a complete cycle under the heating mode.
Furthermore, when the secondary loop air-conditioning heat pump system is switched to a dehumidification mode, single heat exchanger dehumidification and double heat exchanger dehumidification can be realized.
(1) In the dehumidification mode of the single heat exchanger, the path of the hot-end cooling liquid loop is as follows: the hot end cooling liquid comes out of the plate type condenser and passes through a second pump and the first four-way valve to a heater in the air conditioning box, and at the moment, the cooling liquid returns to the inlet of the plate type condenser through the second four-way valve after heating the battery pack; the cold end cooling liquid comes out from the plate evaporator and passes through the water pump and the first three-way valve, at the moment, the cooling liquid completely reaches the cooler in the air-conditioning box, and the cooling liquid returns to the inlet of the plate evaporator through the third three-way valve.
(2) When the double heat exchangers are in a dehumidification mode, the path of the hot-end cooling liquid loop is the same as that of the single heat exchanger in the dehumidification mode, and the difference is that the cold-end cooling liquid loop; the cold end cooling liquid comes out from the plate evaporator and passes through the water pump and the first three-way valve, at the moment, one part of the cooling liquid passing through the first three-way valve is dehumidified by a cooler in the air-conditioning box, the redundant heat is removed by one part of the outdoor radiator, and the two parts of the cooling liquid are converged by the third three-way valve and return to the inlet of the plate evaporator.
The invention has the beneficial effects that: the secondary circuit is utilized to prevent flammable refrigerant from directly contacting with the passenger cabin, so that the danger degree to passengers is reduced when the refrigerant leaks. Meanwhile, the temperature of the battery pack can be controlled by using the liquid cooling form of the secondary loop, and meanwhile, the heat in the electronic equipment can be recovered by using the cooling liquid. The secondary loop air-conditioning heat pump system can realize that one system can control the temperature of a plurality of temperature control points, and is convenient to control and manage.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a battery and electronics for cooling and heating in a temperature range;
FIG. 2 is a schematic diagram of a prior art cooling mode;
FIG. 3 is a schematic diagram of the present invention in a cooling mode in one embodiment;
FIG. 4 is a schematic diagram of the present invention in a heating mode in one embodiment;
FIG. 5 is a schematic diagram of an embodiment of the present invention in a single heat exchanger dehumidification (or defrost) mode;
fig. 6 is a schematic diagram of the present invention in a dual heat exchanger dehumidification (or defrost) mode in one embodiment.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the invention.
In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The following detailed description of the preferred embodiments of the invention, however, the invention is capable of other embodiments in addition to those detailed.
The invention provides a secondary loop air-conditioning heat pump system, as shown in fig. 3, comprising:
the refrigerant loop comprises a compressor 01, a plate type condenser 02, a throttling device 03 and a plate type evaporator 04 which are sequentially connected end to end;
an air-conditioning box 17, which comprises a cooler 12 and a heater 13, wherein one end of the heater 13 is connected with a plate-type condenser 02 and a plate-type evaporator 04 through a first four-way valve 10, a first three-way valve 07 is arranged between the first four-way valve 10 and the plate-type evaporator 04, and the first three-way valve 07 is connected with the cooler 12;
a battery pack 15 connected to the cooler 12 and the heater 13 through a second three-way valve 08, respectively;
one end of the motor 16 is connected with the plate evaporator 04, the other end of the motor is connected with the second three-way valve 08 through the third three-way valve 09, and the remaining port of the third three-way valve 09 is connected with the battery pack 15 through the second four-way valve 11;
an outdoor radiator 14 has one end connected to the first four-way valve 10 and the other end connected to a second four-way valve 11, and the second four-way valve 11 is connected to the plate condenser 02.
In an alternative embodiment of the invention, a first pump 05 is arranged between the first three-way valve 07 and the plate evaporator 04. Further, a second pump 06 is provided between the first four-way valve 10 and the plate condenser 02.
In an alternative embodiment of the invention, the output of the cooler 12 is arranged between the second three-way valve 08 and the third three-way valve 09.
Meanwhile, the invention also provides a heating and refrigerating method adopting the secondary loop air-conditioning heat pump system, which comprises a refrigerating mode, a heating mode, a single heat exchanger dehumidification mode and a double heat exchanger dehumidification mode. The operation of these 4 modes is further described below.
Referring to fig. 3, the process of the cooling mode is: the cooling liquid at the cold end of the plate evaporator 04 sequentially passes through the first three-way valve 07, the cooler 12 and the second three-way valve 08 to the battery pack 15 to cool the battery pack 15, then passes through the second four-way valve 11 and the third three-way valve 09 to cool the motor 16 for temperature control, and then returns to the cooling liquid inlet of the plate evaporator 04; meanwhile, the hot-end cooling liquid of the plate condenser 02 passes through the second pump 06 and the first four-way valve 10 to the outdoor radiator 14, and then passes through the second four-way valve 11 to return to the inlet of the plate condenser 02.
Referring to fig. 4, the process of the heating mode is: the hot end cooling liquid of the plate condenser 02 sequentially passes through a second pump 06, a first four-way valve 10, a heater 13 and a second three-way valve 08 to a battery pack 15 to heat the battery pack 15, and then passes through a second four-way valve 11 to return to an inlet of the plate condenser 02; meanwhile, the cooling liquid at the cold end of the plate evaporator 04 sequentially passes through the first pump 05, the first tee joint 07, the first four-way valve 10 to the outdoor radiator 14, then passes through the second four-way valve 11 and the third three-way valve 09 to cool the motor 16 for temperature control, and then returns to the cooling liquid inlet of the plate evaporator 04;
referring to fig. 5, the process of the single heat exchanger dehumidification mode is: the hot end cooling liquid of the plate condenser 02 sequentially passes through a second pump 06, a first four-way valve 10, a heater 13, a second three-way valve 08 to a battery pack 15 to heat the battery pack 15, and then passes through a second four-way valve 11 to return to an inlet of the plate condenser 02; meanwhile, the cooling liquid at the cold end of the plate evaporator 04 is cooled and controlled by the motor 16 through the first pump 05, the first three-way valve 07, the cooler 12 and the third three-way valve 09, and then returns to the cooling liquid inlet of the plate evaporator 04;
referring to fig. 6, the process of the dual heat exchanger dehumidification mode is: the hot end cooling liquid of the plate condenser 02 sequentially passes through a second pump 06, a first four-way valve 10, a heater 13, a second three-way valve 08 to a battery pack 15 to heat the battery pack 15, and then passes through a second four-way valve 11 to return to an inlet of the plate condenser 02; meanwhile, one part of the cooling liquid at the cold end of the plate evaporator 04 is dehumidified by passing through the first three-way valve 07 to the cooler 12, the other part of the cooling liquid is delivered to the outdoor radiator 14 by passing through the first three-way valve 07 and the first four-way valve 10, and the two parts of the cooling liquid are converged at the third three-way valve 09 and return to the cooling liquid inlet of the plate evaporator 04 after being cooled and controlled by the motor 16.
Due to the adoption of the technical scheme, compared with the dehumidification mode of a single heat exchanger, the dehumidification amount of the single heat exchanger is large, the temperature difference of cooling air is large, and the dehumidification mode of the double heat exchanger and the dehumidification mode of the single heat exchanger can be freely switched by distributing the flow of the cooling liquid through the first three-way valve. In addition, all three-way valves are automatically controlled three-way valves, so that the cooling liquid in the loop can be conveniently opened or closed. All four-way valves can automatically change the direction of the cooling liquid loop.
According to the above description of the embodiments, the secondary circuit heat pump system utilizes three circuits so that the refrigerant circuit does not come into direct contact with the passenger compartment, and there may be an option to add a new type of refrigerant. Through the mode of secondary cooling, the coolant liquid passes through the form of pump delivery, not only can carry out comfort level control to passenger's cabin, also can carry out temperature control to battery package and electronic equipment, realizes that a system controls a plurality of accuse temperature points.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments to equivalent variations, without departing from the spirit of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims (4)

1.一种采用二次回路空调热泵系统的制热制冷方法,所述二次回路空调热泵系统包括制冷剂回路、空调箱(17)、电池包(15)、电机(16)和室外散热器(14);1. A heating and cooling method using a secondary circuit air conditioning heat pump system, the secondary circuit air conditioning heat pump system comprising a refrigerant circuit, an air conditioning box (17), a battery pack (15), a motor (16) and an outdoor radiator (14); 制冷剂回路包括首尾依次连接的压缩机(01)、板式冷凝器(02)、节流装置(03)、板式蒸发器(04);The refrigerant circuit includes a compressor (01), a plate-type condenser (02), a throttling device (03), and a plate-type evaporator (04) that are connected end to end in sequence; 空调箱(17)包括冷却器(12)和加热器(13),加热器(13)一端通过第一四通阀(10)连接板式冷凝器(02)和板式蒸发器(04),在第一四通阀(10)和板式蒸发器(04)中间还设置有第一三通阀(07),第一三通阀(07)连接冷却器(12);The air-conditioning box (17) includes a cooler (12) and a heater (13). One end of the heater (13) is connected to the plate condenser (02) and the plate evaporator (04) through a first four-way valve (10). A first three-way valve (07) is also arranged between the four-way valve (10) and the plate evaporator (04), and the first three-way valve (07) is connected to the cooler (12); 电池包(15)通过第二三通阀(08)分别连接冷却器(12)和加热器(13);The battery pack (15) is respectively connected to the cooler (12) and the heater (13) through the second three-way valve (08); 电机(16)一端与板式蒸发器(04)相连,另一端通过第三三通阀(09)连接第二三通阀(08),第三三通阀(09)的剩余一端口通过第二四通阀(11)连接电池包(15);One end of the motor (16) is connected to the plate evaporator (04), the other end is connected to the second three-way valve (08) through the third three-way valve (09), and the remaining port of the third three-way valve (09) passes through the second three-way valve (09). The four-way valve (11) is connected to the battery pack (15); 室外散热器(14)一端连接第一四通阀(10),另一端连接第二四通阀(11),且该第二四通阀(11)与板式冷凝器(02)相连,其特征在于,One end of the outdoor radiator (14) is connected to the first four-way valve (10), and the other end is connected to the second four-way valve (11), and the second four-way valve (11) is connected to the plate condenser (02), characterized in that is, 所述制热制冷方法包括制冷模式、制热模式、单换热器除湿模式、双换热器除湿模式,其中,The heating and cooling method includes a cooling mode, a heating mode, a single heat exchanger dehumidification mode, and a double heat exchanger dehumidification mode, wherein, 制冷模式的过程为:板式蒸发器(04)的冷端冷却液依次经第一三通阀(07)、冷却器(12)到电池包(15)以冷却电池包(15),之后再经过第二四通阀(11)、第三三通阀(09)给电机(16)冷却控温,然后回到板式蒸发器(04)的冷却液进口;同时,板式冷凝器(02)的热端冷却液经第一四通阀(10)到室外散热器(14)后,经过第二四通阀(11)回到板式冷凝器(02)的进口;The process of the cooling mode is as follows: the cold end coolant of the plate evaporator (04) passes through the first three-way valve (07), the cooler (12) to the battery pack (15) in turn to cool the battery pack (15), and then passes through the The second four-way valve (11) and the third three-way valve (09) cool and control the temperature of the motor (16), and then return to the cooling liquid inlet of the plate evaporator (04); at the same time, the heat of the plate condenser (02) After the end coolant passes through the first four-way valve (10) to the outdoor radiator (14), it returns to the inlet of the plate condenser (02) through the second four-way valve (11); 制热模式的过程为:板式冷凝器(02)的热端冷却液依次经第一四通阀(10)、加热器(13)到电池包(15)给电池包(15)进行加热,之后再经过第二四通阀(11)回到板式冷凝器(02)的进口;同时,板式蒸发器(04)的冷端冷却液依次经过第一三通(07)、第一四通阀(10)到室外散热器(14),之后再经过第二四通阀(11)、第三三通阀(09)给电机(16)冷却控温后,回到板式蒸发器(04)的冷却液进口;The process of the heating mode is as follows: the hot-end coolant of the plate condenser (02) sequentially passes through the first four-way valve (10), the heater (13) to the battery pack (15) to heat the battery pack (15), and then the battery pack (15) is heated. Then, it returns to the inlet of the plate condenser (02) through the second four-way valve (11); at the same time, the cold end coolant of the plate evaporator (04) passes through the first three-way (07) and the first four-way valve (07) in turn. 10) Go to the outdoor radiator (14), then pass through the second four-way valve (11) and the third three-way valve (09) to cool the motor (16) and control the temperature, and then return to the plate evaporator (04) for cooling liquid import; 单换热器除湿模式的过程为:板式冷凝器(02)的热端冷却液依次经过第一四通阀(10)、加热器(13)到电池包(15)给电池包(15)进行加热,之后再经过第二四通阀(11)回到板式冷凝器(02)的进口;同时,板式蒸发器(04)的冷端冷却液经第一三通阀(07)、冷却器(12)、第三三通阀(09)给电机(16)冷却控温后,回到板式蒸发器(04)的冷却液进口;The process of the single heat exchanger dehumidification mode is as follows: the hot end coolant of the plate condenser (02) passes through the first four-way valve (10) and the heater (13) in sequence to the battery pack (15) for the battery pack (15). After heating, it returns to the inlet of the plate condenser (02) through the second four-way valve (11); at the same time, the cold end coolant of the plate evaporator (04) passes through the first three-way valve (07), the cooler ( 12) After the third three-way valve (09) cools and controls the temperature of the motor (16), it returns to the cooling liquid inlet of the plate evaporator (04); 双换热器除湿模式的过程为:板式冷凝器(02)的热端冷却液依次经过第一四通阀(10)、加热器(13)到电池包(15)给电池包(15)进行加热,之后再经过第二四通阀(11)回到板式冷凝器(02)的进口;同时,板式蒸发器(04)的冷端冷却液一部分经第一三通阀(07)到冷却器(12)进行除湿,另一部分经第一三通阀(07)、第一四通阀(10)输送到室外散热器(14),两部分冷却液在第三三通阀(09)汇合,给电机(16)冷却控温后,回到板式蒸发器(04)的冷却液进口。The process of the double heat exchanger dehumidification mode is as follows: the hot-end coolant of the plate condenser (02) passes through the first four-way valve (10), the heater (13) to the battery pack (15) in turn, and then passes through the battery pack (15). After heating, it returns to the inlet of the plate condenser (02) through the second four-way valve (11); at the same time, part of the cold end coolant of the plate evaporator (04) passes through the first three-way valve (07) to the cooler. (12) Dehumidification is carried out, and the other part is transported to the outdoor radiator (14) through the first three-way valve (07) and the first four-way valve (10), and the two parts of the coolant are combined at the third three-way valve (09), After cooling and controlling the temperature of the motor (16), it returns to the cooling liquid inlet of the plate evaporator (04). 2.如权利要求1所述的制热制冷方法,其特征在于,第一三通阀(07)和板式蒸发器(04)之间设置有第一泵(05)。2. The heating and cooling method according to claim 1, characterized in that a first pump (05) is arranged between the first three-way valve (07) and the plate evaporator (04). 3.如权利要求1所述的制热制冷方法,其特征在于,第一四通阀(10)和板式冷凝器(02)之间设置有第二泵(06)。3. The heating and cooling method according to claim 1, wherein a second pump (06) is provided between the first four-way valve (10) and the plate condenser (02). 4.如权利要求1所述的制热制冷方法,其特征在于,所述冷却器(12)的输出端设置在第二三通阀(08)和第三三通阀(09)之间。4. The heating and cooling method according to claim 1, wherein the output end of the cooler (12) is arranged between the second three-way valve (08) and the third three-way valve (09).
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