CN207790310U - Vehicle and its heat management system - Google Patents

Vehicle and its heat management system Download PDF

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Publication number
CN207790310U
CN207790310U CN201721734812.4U CN201721734812U CN207790310U CN 207790310 U CN207790310 U CN 207790310U CN 201721734812 U CN201721734812 U CN 201721734812U CN 207790310 U CN207790310 U CN 207790310U
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heat exchanger
refrigerant
air
coolant liquid
vehicle
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王熙熙
张少丕
赵俊杰
杨少清
李嘉
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Yutong Bus Co Ltd
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Zhengzhou Yutong Bus Co Ltd
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Abstract

The utility model is related to a kind of vehicle and its heat management systems, the heat management system includes air-conditioning system cooling line, motor cooling system cooling line and refrigerant coolant liquid heat exchanger, in-vehicle air refrigerant heat exchanger is provided in air-conditioning system cooling line, the first group of port and second group of port of refrigerant coolant liquid heat exchanger are separately positioned in air-conditioning system cooling line and motor cooling system cooling line;The both ends of first group of port of refrigerant coolant liquid heat exchanger are parallel with air-conditioning refrigerant bypass, and the outer air refrigerant heat exchanger of vehicle and passenger area side electric expansion valve have been arranged in series in air-conditioning refrigerant bypass.In the present invention, when air-conditioning system is under heating mode, by the aperture for controlling passenger area side electric expansion valve, the phenomenon that making a small amount of refrigerant flow through the outer air refrigerant heat exchanger of vehicle, leading to air refrigerant heat exchanger frosting outside vehicle so as to avoid the low-temperature refrigerant for flowing through passenger area side electric expansion valve.

Description

Vehicle and its heat management system
Technical field
The utility model is related to vehicle and its heat management systems, belong to electric vehicle engineering field.
Background technology
Energy saving, emission reduction is the development trend of world today's auto industry, and in this context, the application of electric vehicle is further general Time, the road of the certainty of development of automobile is considered by many experts and scholars.Driving motor and motor controller system are electric vehicles Kernel component.The efficiency of driving motor is generally 90% or so, it means that the motor of 100kW will generate about per hour The heat of 10kWh.If these heats can not effectively be discharged, steeply rising for motor internal temperature certainly will be led to, to damage Motor component simultaneously causes motor operation irregularity even to be damaged.In addition, electric machine controller equally will produce amount of heat, it may damage Internal component.Currently, the driving motor and controller of electric vehicle mainly use coolant circulation unit, pass through radiator and electricity Sub- fan makes air carry out forced-convection heat transfer with motor coolant liquid, to which the heat for generating motor drains into outside vehicle.
On the other hand, when temperature is relatively low in winter, interior heating can expend a large amount of electric energy.At this time if motor heat returned Car is received and be supplied to, vehicle energy consumption can be unquestionably saved.The interior heating of electric vehicle is mostly used with heat pump work(at present The electric air-conditioning device of energy.Under worst cold case, heat pump air conditioner there is evaporimeter frosting outside vehicle, heat pump efficiency is low the problems such as.At this point, The heat very little that the outer evaporator of vehicle is absorbed from environment, it is difficult to meet heating needs.If can be by motor heat recovery to sky It adjusts, vehicle heating capacity and vehicle energy utilization efficiency can not only be promoted, additionally it is possible to the cooling load of A/C evaporator is reduced, To inhibit evaporimeter frosting, the heat pump efficiency of air-conditioning is promoted.
Authorization Notice No. is that the Chinese patent document of CN203460658U discloses a kind of pure electric automobile heat management system, The management system is by being arranged a plate heat exchanger, under air-conditioning heating pattern, to realize following for motor and electric machine controller Heat exchange between loop back path and passenger compartment heat management circuit is added using the waste heat of motor and electric machine controller to passenger compartment Heat realizes the secondary use of energy, saves vehicle energy consumption.But due to plate heat exchanger and motor and electric machine controller Cooling water tank in heat management circuit is connected in series with, and in heat exchanging process, the portion of energy of motor and electric machine controller can be through It crosses the cooling water tank and slatterns, the utilization ratio of energy is also relatively low.In addition, due to air-conditioning system cooling medium (refrigeration Agent) outdoor heat exchanger is directly entered after expansion valve, the generation of outdoor heat exchanger frost can be caused.
Utility model content
The purpose of this utility model is to provide a kind of vehicle and its heat management system, for solving air-conditioning system refrigerant warp Enter the problem of outdoor heat exchanger can lead to outdoor heat exchanger frosting after crossing expansion valve.
In order to solve the above technical problems, the utility model provides a kind of vehicle heat management system, including following scheme:
System schema one:Including air-conditioning system cooling line and motor cooling system cooling line, the air-conditioning system is cold But it is provided with in-vehicle air-refrigerant heat exchanger in pipeline, further includes refrigerant-coolant liquid heat exchanger, the refrigerant-cooling First group of port of liquid heat exchanger is arranged in the air-conditioning system cooling line, and the of the refrigerant-coolant liquid heat exchanger Two groups of ports are arranged in the motor cooling system cooling line;First group of port of the refrigerant-coolant liquid heat exchanger Both ends be parallel with air-conditioning refrigerant bypass, the outer air-refrigerant heat exchanger of vehicle has been arranged in series in air-conditioning refrigerant bypass Device and passenger area side electric expansion valve.
System schema two:On the basis of system schema one, second group of port of the refrigerant-coolant liquid heat exchanger Both ends are parallel with the bypass of motor coolant liquid, and air-coolant liquid heat exchanger is provided in the motor coolant liquid bypass.
System schema three, four:Respectively on the basis of system schema one, two, the of the refrigerant-coolant liquid heat exchanger One group of port is in series with heat exchanger side electric expansion valve.
System schema five:On the basis of system schema two, second group of port of the refrigerant-coolant liquid heat exchanger and The bypass of motor coolant liquid is arranged by threeway connection valve in the motor cooling system cooling line.
System schema six:On the basis of system schema two, second group of port of the refrigerant-coolant liquid heat exchanger is gone here and there It is associated with the first control valve, the second control valve is in series in the motor coolant liquid bypass.
System schema seven, eight:Respectively on the basis of system schema one, two, on the motor cooling system cooling line It is provided with for the motor radiating structure to motor radiating and the electric machine controller radiator structure for radiating to electric machine controller, The motor radiating structure and electric machine controller radiator structure are connected in parallel.
The utility model additionally provides a kind of vehicle, including following scheme:
Vehicle scheme one:Including vehicle heat management system, the vehicle heat management system includes air-conditioning system cooling line With motor cooling system cooling line, in-vehicle air-refrigerant heat exchanger is provided in the air-conditioning system cooling line, the vehicle Heat management system further includes refrigerant-coolant liquid heat exchanger, first group of port setting of the refrigerant-coolant liquid heat exchanger In the air-conditioning system cooling line, second group of port setting of the refrigerant-coolant liquid heat exchanger is dissipated in the motor In hot systems cooling line;The both ends of first group of port of the refrigerant-coolant liquid heat exchanger are parallel with by air-conditioning refrigerant Road has been arranged in series the outer air-refrigerant heat exchanger of vehicle and passenger area side electric expansion valve in the air-conditioning refrigerant bypass.
Vehicle scheme two:On the basis of vehicle scheme one, second group of port of the refrigerant-coolant liquid heat exchanger Both ends are parallel with the bypass of motor coolant liquid, and air-coolant liquid heat exchanger is provided in the motor coolant liquid bypass.
Vehicle scheme three, four:Respectively on the basis of vehicle scheme one, two, the of the refrigerant-coolant liquid heat exchanger One group of port is in series with heat exchanger side electric expansion valve.
Vehicle scheme five:On the basis of vehicle scheme two, second group of port of the refrigerant-coolant liquid heat exchanger and The bypass of motor coolant liquid is arranged by threeway connection valve in the motor cooling system cooling line.
Vehicle scheme six:On the basis of vehicle scheme two, second group of port of the refrigerant-coolant liquid heat exchanger is gone here and there It is associated with the first control valve, the second control valve is in series in the motor coolant liquid bypass.
Vehicle scheme seven, eight:Respectively on the basis of vehicle scheme one, two, on the motor cooling system cooling line It is provided with for the motor radiating structure to motor radiating and the electric machine controller radiator structure for radiating to electric machine controller, The motor radiating structure and electric machine controller radiator structure are connected in parallel.
The utility model has the beneficial effects that:
Pass through the both ends of first group of port of the refrigerant in being set to air-conditioning system cooling line-coolant liquid heat exchanger Air-conditioning refrigerant bypass in parallel, the air-conditioning system is located at by air-refrigerant heat exchanger outside vehicle and passenger area side electric expansion valve string In cryogen bypass, when air-conditioning system is under heating mode, by controlling the aperture of passenger area side electric expansion valve, make a small amount of Refrigerant flow through the outer air-refrigerant heat exchanger of vehicle, so that a large amount of refrigerant is flowed through the first of refrigerant-coolant liquid heat exchanger Group port exchanges heat, and can lead to air-system outside vehicle so as to avoid the low-temperature refrigerant for flowing through passenger area side electric expansion valve The phenomenon that cryogen heat exchanger frosting, and flow through the refrigerant and motor cooling system cooling tube of refrigerant-coolant liquid heat exchanger Coolant liquid in road carries out heat exchange to absorb heat, to improve the waste heat utilization of motor and electric machine controller.
Further, by being arranged in parallel motor cooling at the both ends of second group of port of refrigerant-coolant liquid heat exchanger Liquid bypasses, by air-coolant liquid heat exchanger setting in motor coolant liquid bypass, when air-conditioning system is under heating mode When, it controls the cooling liquid part in motor cooling system cooling line and even all flows through the of refrigerant-coolant liquid heat exchanger Two groups of ports, are heated to the refrigerant in air-conditioning system cooling line, are avoided in motor cooling system cooling line Whole coolant liquids are needed by being added again to the refrigerant in air-conditioning system cooling line after air-coolant liquid heat exchanger Heat, can effectively improve the utilization rate of waste heat caused by motor and controller, and enhancing inhibits the outer air-refrigerant heat exchanger of vehicle The effect of device frosting.
Description of the drawings
Fig. 1 is the basic principle structural schematic diagram of the vehicle heat management system of the utility model;
Fig. 2 is the structural schematic diagram of the vehicle heat management system first embodiment of the utility model;
Fig. 3 is the port distribution schematic diagram of the four-way reversing valve of the utility model;
Fig. 4 is the port distribution schematic diagram of the plate heat exchanger of the utility model;
Fig. 5 is the port distribution schematic diagram of the threeway connection valve of the utility model;
Fig. 6 is the structural schematic diagram of the vehicle heat management system second embodiment of the utility model;
Fig. 7 is the structural schematic diagram of the vehicle heat management system 3rd embodiment of the utility model.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and specifically The present invention will be further described in detail for embodiment.
The utility model provides a kind of vehicle, and the type of vehicle is unrestricted, can be the inhomogeneities such as car, car Type.The vehicle includes vehicle heat management system, and when heat pump air conditioner opens heating mode, which uses air-conditioning Refrigerant is that motor and electric machine controller radiate, to by its heat absorption and be transferred to car.As shown in Figure 1, (will drive It is dynamic) the coolant liquid pipeline (motor radiating structure) of motor and the coolant liquid pipeline (electric machine controller radiator structure) of electric machine controller Parallel connection, it is in radiating end that refrigerant-coolant liquid heat exchanger is in parallel with air-coolant liquid heat exchanger.Air-conditioning not running opens system When chill formula, refrigerant-coolant liquid heat exchange manifold is closed, is dissipated for motor and controller using air-coolant liquid heat exchanger Heat;When air-conditioning opens heating mode, air-coolant liquid heat exchanger water route is closed, the use of refrigerant-coolant liquid heat exchanger is motor And its controller heat dissipation.
Fig. 2 gives the structural schematic diagram of the first embodiment of the vehicle heat management system of the utility model, vehicle heat Management system includes air-conditioning system cooling line and motor cooling system cooling line, is wherein arranged in air-conditioning system cooling line There are compressor 1, four-way reversing valve 2, in-vehicle air-refrigerant heat exchanger 3, vehicle outer air-refrigerant heat exchanger 4, plate-type heat-exchange Device 5, electric expansion valve 6 (the first expansion valve) and corresponding pipeline, in air-conditioning system cooling line equipped in vehicle chamber plus Heat or the cooling medium (refrigerant) of cooling.Expansion tank 7, plate heat exchanger are provided in motor cooling system cooling line 5, air-coolant liquid heat exchanger 9, water pump 10, motor 11 (band coolant liquid water jacket) and electric machine controller 12 (band coolant liquid water jacket), The coolant duct (motor radiating structure) of motor 11 and coolant duct (the electric machine controller heat dissipation knot of electric machine controller 12 Structure) it is connected in parallel, it is (cooling equipped with the cooling medium cooled down for motor and electric machine controller in motor cooling system cooling line Liquid).
Wherein, outer 4 and first expansion valve 6 of air-refrigerant heat exchanger of first group of port series connection vehicle of plate heat exchanger 5 it Between pipeline in, second group of port of plate heat exchanger 5 is connected in motor cooling system cooling line.In plate heat exchanger 5 The both ends of second group of port be parallel with the bypass of motor coolant liquid, air-coolant liquid heat exchanger 9 string is located at by the motor coolant liquid Lu Zhong.In specific setting up procedure, second group of port of the bypass of motor coolant liquid and plate heat exchanger 5 passes through threeway connection valve 8 It is arranged in motor cooling system cooling line.Certainly, it as other embodiments, can also be directly connected in parallel using pipeline Motor coolant liquid bypasses and second group of port of plate heat exchanger 5, and is arranged in series one to second group of port of plate heat exchanger 5 A first control valve, second control valve is arranged in series in the bypass of motor coolant liquid, and motor coolant liquid is flowed through for controlling The uninterrupted of coolant liquid in second group of port of bypass and plate heat exchanger 5.Two control valves can also only be retained wherein One, to adjust coolant rate in second group of port of plate heat exchanger 5 and air-coolant liquid heat exchanger 9.
Expansion tank 7 is placed in the highest point of coolant liquid cycle, so as to the discharge of gas in coolant liquid.In-vehicle air-refrigeration Outer air-the refrigerant heat exchanger 4 of agent heat exchanger 3, vehicle and air-coolant liquid heat exchanger 9 all have mating electronic fan.Four The port organization schematic diagram of logical reversal valve 2 is as shown in figure 3, one group port A1 and C1 is separately connected compressor 1 by pipeline Two-port, one group of port B1 and D1 are separately connected air-refrigerant outside in-vehicle air-refrigerant heat exchanger 3 and vehicle by pipeline Heat exchanger 4.The port organization schematic diagram of plate heat exchanger 5 is as shown in figure 4, first group of port A2 and B2 are separately connected by pipeline First expansion valve 6 and the outer air-refrigerant heat exchanger 4 of vehicle, second group of port C2 are separately connected threeway by pipeline with D2 and connect Valve 8 and air-coolant liquid heat exchanger 9.Threeway connection valve 8 has the function of automatically controlling fluid flow direction, cold to control But the flow path of liquid, port organization schematic diagram is as shown in figure 5, port A3, B3 and C3 are separately connected motor 11 by pipeline With electric machine controller 12, plate heat exchanger 5 and air-coolant liquid heat exchanger 9.
In the present embodiment, plate heat exchanger 5 is used as a kind of specific refrigerant-coolant liquid heat exchanger, is also substitutable for The heat exchanger of other forms;Cooling medium in air-conditioning system cooling line and motor cooling system cooling line is The glycol water of 50vol%.Certainly, as other embodiments, it can also be other which, which can be water, Suitable coolant.
The specific implementation of the first embodiment of above-mentioned vehicle heat management system and control mode are:
(i) when air-conditioning panel is not opened, compressor 1 does not work, and the refrigerant in air-conditioning system cooling line does not recycle. A3 and C3 connects (interface is shown in Fig. 5) in threeway connection valve 8, and water pump 10 is opened, the air-mating electron wind of coolant liquid heat exchanger 9 Fan is opened.At this point, in motor cooling system cooling line coolant flow sequence be 10 → 11/12 → 8A3 → 8C3 → 9 → 10。
(ii) when it is heating mode that air-conditioning panel, which is opened, compressor 1 works, A1 and B1 connections, C1 in four-way reversing valve 2 (interface is shown in Fig. 3) is connected with D1, the mating electron wind of the outer air-refrigerant heat exchanger 4 of in-vehicle air-refrigerant heat exchanger 3, vehicle Fan is opened, and electric expansion valve 6 is opened.At this point, refrigerant sequence of flow in air-conditioning system cooling line be 1 → 2A1 → 2B1 → 3→6→5A2→5B2→4→2D1→2C1→1.A3 and B3 is connected in threeway connection valve 8, and water pump 10 is opened, air-coolant liquid The mating electronic fan of heat exchanger 9 is closed.At this point, the coolant flow sequence in motor cooling system cooling line for 10 → 11/12→8A3→8B3→5C2→5D2→10。
(iii) when it is refrigeration mode that air-conditioning panel, which is opened, compressor 1 works, in four-way reversing valve 2 A1 and D1 connect, B1 and C1 is connected, and the mating electronic fan of the outer air-refrigerant heat exchanger 4 of in-vehicle air-refrigerant heat exchanger 3, vehicle is opened, electricity Sub- expansion valve 6 is opened.At this point, refrigerant sequence of flow be 1 → 2A1 → 2D1 → 4 → 5B2 → 5A2 → 6 → 3 → 2B1 → 2C1 → 1.A3 and C3 is connected in threeway connection valve 8, and water pump 10 is opened, and the mating electronic fan of air-coolant liquid heat exchanger 9 is opened.This When, the coolant flow sequence in motor cooling system cooling line is 10 → 11/12 → 8A3 → 8C3 → 9 → 10.
The first embodiment of vehicle heat management system is by going here and there plate heat exchanger 5 and air-refrigerant heat exchanger 4 outside vehicle Connection, and plate heat exchanger 5 is placed in outside vehicle between air-refrigerant heat exchanger 4 and electric expansion valve 6, and when winter can be preferential The temperature of the refrigerant in air-conditioning system cooling line is promoted using the heat of motor and controller, to promote vehicle Refrigerant temperature in outer air-refrigerant heat exchanger 4 and reduce its heat exchange amount, and then inhibit its frosting, promotes the system of heat pump Hot property.Make by the way that plate heat exchanger 5 and air-coolant liquid heat exchanger 9 are used parallel-connection structure, when can be in winter motor and The coolant liquid of its controller only carries out heat exchange by plate heat exchanger, to increase the heat exchange amount of plate heat exchanger, enhancing To the inhibiting effect of 4 frosting of air-refrigerant heat exchanger outside vehicle.Certainly, as other embodiments, plate can also be used 9 concatenated form of second group of port of formula heat exchanger 5 and air-coolant liquid heat exchanger.Motor is with electric machine controller using cooling Pipeline parallel-connection structure, this is because motor 11 and its electric machine controller 12 all have larger heat dissipation capacity, when summer part temperatures compared with Height, if using cascaded structure, coolant liquid is heated after previous component, may result in the entrance that water temperature is more than latter part Water temperature requirement, leads to alarm or other failures.
Fig. 6 gives the structural schematic diagram of the second embodiment of the vehicle heat management system of the utility model, with vehicle heat The first embodiment of management system is compared, and the both ends of first group of port A2 and B2 of refrigerant-coolant liquid heat exchanger 5 are additionally provided with Air-conditioning refrigerant bypasses, and the air-refrigerant heat exchanger 4 outside the vehicle being located in air-conditioning system cooling line that will go here and there originally is changed to go here and there and set In air-conditioning refrigerant bypass, i.e., by first group of port of refrigerant in first embodiment-coolant liquid heat exchanger 5 and vehicle outer space 4 concatenated structure of gas-refrigerant heat exchanger is changed to first group of port and the outer air-refrigeration of vehicle of refrigerant-coolant liquid heat exchanger 5 The structure in parallel of agent heat exchanger 4.Correspondingly by first group of concatenated electronics in port of script and refrigerant-coolant liquid heat exchanger 5 Expansion valve 6 is changed to two, the passenger that two electric expansion valves are respectively with air-refrigerant heat exchanger 4 is connected in series with outside vehicle It area side electric expansion valve 6-1 (the second expansion valve) and is connected in series with first group of port of refrigerant-coolant liquid heat exchanger Heat exchanger side electric expansion valve 6-2 (third expansion valve).Wherein, when air-conditioning system is under heating mode, air-conditioning system is cold But the flow direction of the refrigerant in pipeline is air-refrigerant heat exchanger 4 outside the electric expansion valve 6-1 to vehicle of passenger area side, and From heat exchanger side electric expansion valve 6-2 to refrigerant-first group of port of coolant liquid heat exchanger.Certainly, implement as others Mode can also save the heat exchanger side electric expansion valve being connected in series with first group of port of refrigerant-coolant liquid heat exchanger 6-2。
The specific implementation of the second embodiment of above-mentioned vehicle heat management system and control mode are:
(i) when air-conditioning panel is not opened, compressor 1 does not work, and the refrigerant in air-conditioning system cooling line does not recycle. A3 and C3 connects (interface is shown in Fig. 5) in threeway connection valve 8, and water pump 10 is opened, the air-mating electron wind of coolant liquid heat exchanger 9 Fan is opened.At this point, in motor cooling system cooling line coolant flow sequence be 10 → 11/12 → 8A3 → 8C3 → 9 → 10。
(ii) when it is heating mode that air-conditioning panel, which is opened, compressor 1 works, A1 and B1 connections, C1 in four-way reversing valve 2 It is connected with D1, the mating electronic fan of the outer air-refrigerant heat exchanger 4 of in-vehicle air-refrigerant heat exchanger 3, vehicle is opened, passenger Area side electric expansion valve 6-1 and heat exchanger side electric expansion valve 6-2 are opened.At this point, the refrigerant of air-conditioning system cooling line Flowing is divided into two-way, respectively 1 → 2A1 → 2B1 → 3 → 6-1 → 4 → 2D1 → 2C1 → 1 and 1 → 2A1 → 2B1 → 3 → 6-2 →5A2→5B2→2D1→2C1→1.A3 and B3 is connected in threeway connection valve 8, and water pump 10 is opened, air-coolant liquid heat exchanger 9 Mating electronic fan is closed.At this point, the coolant flow sequence in motor cooling system cooling line for 10 → 11/12 → 8A3→8B3→5C2→5D2→10。
(iii) when it is refrigeration mode that air-conditioning panel, which is opened, compressor 1 works, in four-way reversing valve 2 A1 and D1 connect, B1 and C1 is connected, and the mating electronic fan of the outer air-refrigerant heat exchanger 4 of in-vehicle air-refrigerant heat exchanger 3, vehicle is opened, and is multiplied Objective area side electric expansion valve 6-1 is opened, and heat exchanger side electric expansion valve 6-2 is closed.At this point, the system in air-conditioning system cooling line Cryogen sequence of flow is 1 → 2A1 → 2D1 → 4 → 6-1 → 3 → 2B1 → 2C1 → 1.A3 and C3 is connected in threeway connection valve 8, water Pump 10 is opened, and the mating electronic fan of air-coolant liquid heat exchanger 9 is opened.At this point, cold in motor cooling system cooling line But liquid sequence of flow is 10 → 11/12 → 8A3 → 8C3 → 9 → 10.
In the present embodiment, when it is heating mode that air-conditioning panel, which is opened, by controlling expansion valve 6-1 and expansion valve 6-2 Aperture, so that a small amount of refrigerant in air-conditioning system cooling line is flowed through expansion valve 6-1, to avoid flowing through expansion valve 6-1 Low-temperature refrigerant afterwards can lead to the phenomenon that air -4 frosting of refrigerant heat exchanger outside vehicle, make big in air-conditioning system cooling line The refrigerant of amount flows through expansion valve 6-2, and is carried out by plate heat exchanger 5 and the coolant liquid in motor cooling system cooling line Heat exchange, to improve the waste heat utilization of motor and electric machine controller.
Compared with vehicle heat management system first embodiment, the pressure of the refrigerant in vehicle heat management system embodiment two Loss is smaller, can inhibit air-refrigeration outside vehicle according to the aperture of the motor feels hot power conditioning electronic expansion valve 6-1 and 6-2 While agent 4 frosting of heat exchanger, with maximum absorption motor waste heat, but system is more complex, and control difficulty is high.
Fig. 7 gives the structural schematic diagram of the 3rd embodiment of the vehicle heat management system of the utility model, with vehicle heat The first embodiment of management system is compared, and special plate heat exchanger 5 is no longer arranged, but is set to air-conditioning system cooling tube in string A set of heat exchange mechanisms 13, two ports of the heat exchange mechanisms are set on the radiating surface of air-refrigerant heat exchanger 4 outside vehicle in road String is located in motor cooling system cooling line.The heat exchange mechanisms 13 are connect with outer 4 heat exchange of air-refrigerant heat exchanger of vehicle, The coolant liquid of the heat exchange mechanisms is flowed through in motor cooling system cooling line to flow through vehicle with air-conditioning system cooling line The refrigerant of outer air-refrigerant heat exchanger 4 carries out heat exchange.Outer air-the refrigerant heat exchanger 4 of vehicle and heat exchange mechanisms constitute Two ports of one mutual heat exchange unit, the outer air-refrigerant heat exchanger of vehicle 4 constitute first group of end of mutual heat exchange unit Mouthful, two ports of heat exchange mechanisms constitute second group of port of mutual heat exchange unit.
Two ports of heat exchange mechanisms 13 are parallel with the bypass of motor coolant liquid, and air-coolant liquid heat exchanger 9 is arranged in the electricity In the bypass of machine coolant liquid.At this point, heat exchange mechanisms 13 and air-coolant liquid heat exchanger 9 are arranged by triple valve 8 in motor radiating system In system cooling line.Similarly with first embodiment, triple valve 8 can also be substituted for two control valves, one of control valve with Heat exchange mechanisms 13 are connected in series with, another control valve is connected in series with air-coolant liquid heat exchanger 9, and heat exchanger is flowed through to adjust The flow of the coolant liquid of structure 13 and air-coolant liquid heat exchanger 9.It, can also directly will be empty in addition, as other embodiments Gas-string of coolant liquid heat exchanger 9 is located in motor cooling system cooling line, at this time heat exchange mechanisms 13 and air-coolant liquid heat exchange Device 9 is connected in series with.
In the present embodiment, the winter refrigeration agent entrance side of air-refrigerant heat exchanger 4 is arranged outside vehicle in heat exchange mechanisms (close to 6 side of electric expansion valve).Heat exchange mechanisms winding is arranged outside vehicle on the radiating surface of air-refrigerant heat exchanger 4, heat exchanger The radiating surface that structure can be close to air-refrigerant heat exchanger 4 outside vehicle is wound, and can also be looped around the outer air-refrigeration of vehicle The surrounding of the radiating surface of agent heat exchanger 4, but not with cooling surface contacts.In order to enhance heat transfer effect, the direction of heat exchange mechanisms winding It is vertical with the flow direction of refrigerant in air-refrigerant heat exchanger 4 outside vehicle.In addition, mutual heat exchange unit and air-coolant liquid Heat exchanger 9 constitutes independent heat-sink unit 44, shares one group of electronic fan, this group of electronic fan can be simultaneously used for mutual Heat exchange unit and air-coolant liquid heat exchanger 9 carry out heat dissipation use, between mutual heat exchange unit and air-coolant liquid heat exchanger 9 Distance do not limit, as long as being arranged in the working range of this group of electronic fan, disclosure satisfy that cooling requirements.
The specific implementation of the 3rd embodiment of above-mentioned vehicle heat management system and control mode are:
(i) when air-conditioning panel is not opened, compressor 1 does not work, and the refrigerant in air-conditioning system cooling line does not recycle. A3 and B3 connects (interface is shown in Fig. 5) in threeway connection valve 8, and water pump 10 is opened, and the electronic fan of heat-sink unit 44 is opened.At this point, Coolant flow sequence in motor cooling system cooling line is 10 → 11/12 → 8A3 → 8B3 → 9 → 10.
(ii) when it is heating mode that air-conditioning panel, which is opened, compressor 1 works, A1 and B1 connections, C1 in four-way reversing valve 2 It is connected with D1, the electronic fan unlatching of in-vehicle air-refrigerant heat exchanger 3, heat-sink unit 44, electric expansion valve 6 is opened.This When, the refrigerant sequence of flow in air-conditioning system cooling line is 1 → 2A1 → 2B1 → 3 → 6 → 4 → 2D1 → 2C1 → 1.Threeway A3 and C3 are connected in connection valve 8, and water pump 10 is opened, the coolant flow sequence in motor cooling system cooling line for 10 → 11/12→8A3→8C3→13→10。
(iii) when it is refrigeration mode that air-conditioning panel, which is opened, compressor 1 works, in four-way reversing valve 2 A1 and D1 connect, B1 and C1 is connected, and the mating electronic fan of the outer air-refrigerant heat exchanger 4 of in-vehicle air-refrigerant heat exchanger 3, vehicle is opened, electricity Sub- expansion valve 6 is opened.At this point, refrigerant sequence of flow in air-conditioning system cooling line be 1 → 2A1 → 2D1 → 4 → 6 → 3 → 2B1→2C1→1.A3 and B3 is connected in threeway connection valve 8, and water pump 10 is opened, the air-mating electron wind of coolant liquid heat exchanger 9 Fan is opened.At this point, in motor cooling system cooling line coolant flow sequence be 10 → 11/12 → 8A3 → 8B3 → 9 → 10。
Compared with vehicle heat management system first embodiment, vehicle heat management system embodiment three need not be arranged special Heat exchanger, but corresponding heat exchange structure is added on the basis of air-refrigerant heat exchanger 4 outside vehicle, to serve as heat exchanger Effect absorbs the waste heat of motor and electric machine controller in motor cooling system cooling line coolant liquid, can not only prevent outside vehicle 4 frosting of air-refrigerant heat exchanger improves energy utilization rate, and can save the volume of system, weight.
It should be noted that the air-conditioning in above-mentioned all embodiments is to refer to realize that refrigeration and the air conditioning of heating are set Standby, this refers to new-energy automobile pure electric vehicle heat pump air conditioners.Certainly as other embodiments, which can also substitute Can only to realize the heat pump unit of heat-production functions, in winter in heating operations, air-conditioning system cooling line may be implemented State the waste heat absorption function in motor cooling system cooling line.
When winter passenger area temperature is relatively low to be needed to open air-conditioning, the utility model is absorbed using air-conditioning system cooling line The waste heat of motor and controller, and it is transported to passenger area, to reduce evaporator heat absorption, it can not only realize motor waste heat profit With reduction vehicle heating energy consumption promotes vehicle efficiency of energy utilization;And A/C evaporator knot under worst cold case can be inhibited Frost promotes the heat pump efficiency of air-conditioning.

Claims (12)

1. a kind of vehicle heat management system, including air-conditioning system cooling line and motor cooling system cooling line, the air-conditioning In-vehicle air-refrigerant heat exchanger is provided in system cooling line, which is characterized in that further include refrigerant-coolant liquid heat exchange First group of port of device, the refrigerant-coolant liquid heat exchanger is arranged in the air-conditioning system cooling line, the refrigeration Second group of port of agent-coolant liquid heat exchanger is arranged in the motor cooling system cooling line;Refrigerant-the coolant liquid The both ends of first group of port of heat exchanger are parallel with air-conditioning refrigerant bypass, and vehicle has been arranged in series in the air-conditioning refrigerant bypass Outer air-refrigerant heat exchanger and passenger area side electric expansion valve.
2. vehicle heat management system according to claim 1, which is characterized in that the refrigerant-coolant liquid heat exchanger The both ends of second group of port are parallel with the bypass of motor coolant liquid, and being provided with air-coolant liquid in the motor coolant liquid bypass changes Hot device.
3. vehicle heat management system according to claim 1 or 2, which is characterized in that the refrigerant-coolant liquid heat exchanger First group of port be in series with heat exchanger side electric expansion valve.
4. vehicle heat management system according to claim 2, which is characterized in that the refrigerant-coolant liquid heat exchanger Second group of port and the bypass of motor coolant liquid are arranged by threeway connection valve in the motor cooling system cooling line.
5. vehicle heat management system according to claim 2, which is characterized in that the refrigerant-coolant liquid heat exchanger Second group of port is in series with the first control valve, and the second control valve is in series in the motor coolant liquid bypass.
6. vehicle heat management system according to claim 1 or 2, which is characterized in that the motor cooling system cooling tube Road is provided with for the motor radiating structure to motor radiating and the electric machine controller heat dissipation for radiating to electric machine controller Structure, the motor radiating structure and electric machine controller radiator structure are connected in parallel.
7. a kind of vehicle, including vehicle heat management system, the vehicle heat management system includes air-conditioning system cooling line and electricity Machine cooling system cooling line is provided with in-vehicle air-refrigerant heat exchanger in the air-conditioning system cooling line, and feature exists In, the vehicle heat management system further include refrigerant-coolant liquid heat exchanger, first group of the refrigerant-coolant liquid heat exchanger Port is arranged in the air-conditioning system cooling line, and second group of port of the refrigerant-coolant liquid heat exchanger is arranged in institute It states in motor cooling system cooling line;The both ends of first group of port of the refrigerant-coolant liquid heat exchanger are parallel with air-conditioning Refrigerant bypassing has been arranged in series the outer air-refrigerant heat exchanger of vehicle and passenger area side electronics in the air-conditioning refrigerant bypass Expansion valve.
8. vehicle according to claim 7, which is characterized in that second group of port of the refrigerant-coolant liquid heat exchanger Both ends be parallel with the bypass of motor coolant liquid, be provided with air-coolant liquid heat exchanger in motor coolant liquid bypass.
9. vehicle according to claim 7 or 8, which is characterized in that first group of end of the refrigerant-coolant liquid heat exchanger Mouth is in series with heat exchanger side electric expansion valve.
10. vehicle according to claim 8, which is characterized in that second group of port of the refrigerant-coolant liquid heat exchanger It is arranged in the motor cooling system cooling line by threeway connection valve with the bypass of motor coolant liquid.
11. vehicle according to claim 8, which is characterized in that second group of port of the refrigerant-coolant liquid heat exchanger It is in series with the first control valve, the second control valve is in series in the motor coolant liquid bypass.
12. vehicle according to claim 7 or 8, which is characterized in that be provided on the motor cooling system cooling line For the motor radiating structure to motor radiating and the electric machine controller radiator structure for radiating to electric machine controller, the electricity Machine radiator structure and electric machine controller radiator structure are connected in parallel.
CN201721734812.4U 2017-12-13 2017-12-13 Vehicle and its heat management system Active CN207790310U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109823137A (en) * 2019-01-24 2019-05-31 珠海格力电器股份有限公司 Coach air conditioner
CN109910590A (en) * 2017-12-13 2019-06-21 郑州宇通客车股份有限公司 A kind of vehicle and its heat management system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109910590A (en) * 2017-12-13 2019-06-21 郑州宇通客车股份有限公司 A kind of vehicle and its heat management system
CN109823137A (en) * 2019-01-24 2019-05-31 珠海格力电器股份有限公司 Coach air conditioner
CN109823137B (en) * 2019-01-24 2021-06-15 珠海格力电器股份有限公司 Air conditioner for passenger car

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Address after: 450061 Yudao Road, Guancheng District, Zhengzhou City, Henan Province

Patentee after: Yutong Bus Co.,Ltd.

Address before: 450016 Yutong Industrial Zone, eighteen Li River, Henan, Zhengzhou

Patentee before: ZHENGZHOU YUTONG BUS Co.,Ltd.