CN107351630B - Heat pump air conditioning system and electric car - Google Patents

Heat pump air conditioning system and electric car Download PDF

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Publication number
CN107351630B
CN107351630B CN201610309157.1A CN201610309157A CN107351630B CN 107351630 B CN107351630 B CN 107351630B CN 201610309157 A CN201610309157 A CN 201610309157A CN 107351630 B CN107351630 B CN 107351630B
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China
Prior art keywords
branch
valve
air conditioning
conditioning system
heat pump
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CN201610309157.1A
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Chinese (zh)
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CN107351630A (en
Inventor
梁耀炜
叶梅娇
陈雪峰
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BYD Co Ltd
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BYD Co Ltd
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Priority to CN201610309157.1A priority Critical patent/CN107351630B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
    • B60H1/00899—Controlling the flow of liquid in a heat pump system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow

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  • Engineering & Computer Science (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

The invention discloses a kind of heat pump air conditioning system and electric cars, it include: indoor condenser, indoor evaporator, compressor, outdoor heat exchanger and battery pack, indoor condenser is connected to via first throttle branch or the first through-flow branch with outdoor heat exchanger, outdoor heat exchanger is connected to the first branch via the second throttling branch or the second through-flow branch and is connected to second branch, the first branch is communicated with compressor, second branch is connected to indoor evaporator, indoor evaporator is communicated with compressor, evaporator in battery pack is connected to outdoor heat exchanger via the cooling branch of battery or is connected to via the cooling branch of battery with the first branch and second branch, and it is communicated with compressor via battery heating branch, evaporator in battery pack is communicated with compressor via battery cooling for reflux branch, and branch and indoor condensation are heated to reflux via battery Device connection.Heating efficiency is improved thus, it is possible to reach, be heated or cooled using air-conditioning system for battery pack and other effects.

Description

Heat pump air conditioning system and electric car
Technical field
The present invention relates to electric car fields, and in particular, to a kind of heat pump air conditioning system and electric car.
Background technique
Electric car does not have orthodox car to be used to the engine exhaust heat of heating, can not provide heating reservoir.Therefore, electronic vapour The air-conditioning system of vehicle itself must have the function of heating, that is, use heat pump type air conditioner system and/or electric heating heat supply.
The utility model patent of Publication No. CN205039220U discloses a kind of automobile power cell cooling system.This is Though system can be in all kinds of electric cars to using in battery Cooling Air-conditioning System, the single only cooling system of the system does not have Battery heating system, the patented technology are only able to satisfy the cooling use of battery high-temperature, are unable to satisfy under low temperature and want to what battery heated It asks.
Summary of the invention
The object of the present invention is to provide a kind of heat pump air conditioning system and electric cars, can not change refrigerant circulation direction Automotive air-conditioning system refrigeration and heating can be realized, cooled and heated to reach to battery, while being able to satisfy interior refrigeration again And heating demands.
To achieve the goals above, according to the first aspect of the invention, a kind of heat pump air conditioning system, the system packet are provided It includes: indoor condenser, indoor evaporator, compressor, outdoor heat exchanger and the battery pack for being internally provided with evaporator, the interior It is connected to via first throttle branch or the first through-flow branch with the entrance of the outdoor heat exchanger to the egress selection of condenser, The egress selection of the outdoor heat exchanger via the second throttling branch or the second through-flow branch and selective on or off The first branch first end connection and be connected to the first end of the second branch of selective on or off, the first branch Second end be connected to the entrance of the compressor, the entrance of the second end of the second branch and the indoor evaporator connects Logical, the outlet of the indoor evaporator is connected to the entrance of the compressor, the entrance of the evaporator in the battery pack via The outlet or cooling via the battery of the cooling branch of the battery of selective on or off and the outdoor heat exchanger Branch is connected to the first end of the first end of the first branch and second branch, and via the electricity of selective on or off The outlet of branch and the compressor is heated in pond, and the outlet of the evaporator in the battery pack is connected or cuts via selectivity Battery cooling for reflux branch only is connected to the entrance of the compressor, and is heated via the battery of selective on or off The outlet of reflux branch and the indoor condenser.
Optionally, first switch valve is provided in the first branch.
Optionally, second switch valve is provided in the second branch.
Optionally, the heat pump air conditioning system further include: the first triple valve, the egress selection of the outdoor heat exchanger It is connected to via the second throttling branch or the second through-flow branch with the entrance of first triple valve, the first of first triple valve Outlet is connected to the first end of the first branch, the second outlet of first triple valve and the first end of the second branch Connection.
Optionally, the outlet of the indoor evaporator is connected to via the first check valve with the entrance of the compressor.
Optionally, the entrance of the evaporator in the battery pack is via the cooling branch of the battery and the outdoor heat exchanger Outlet, and be provided with the first expansion valve on the cooling branch road of the battery.
Optionally, the cooling branch road of the battery is additionally provided with third switch valve and second one-way valve, first expansion By the outlet of the third switch valve and the outdoor heat exchanger, the outlet of first expansion valve passes through the entrance of valve The second one-way valve is connected to the entrance of the evaporator in the battery pack.
Optionally, the entrance of the evaporator in the battery pack is via the cooling branch of the battery and the first branch The connection of the first end of first end and second branch, and flow valve is provided on the cooling branch road of the battery.
Optionally, the cooling branch road of the battery is additionally provided with the 4th switch valve and third check valve, the flow valve Entrance is connected to via the 4th switch valve with the first end of the first end of the first branch and second branch, the flow valve Outlet be connected to via the third check valve with the entrance of the evaporator in the battery pack.
Optionally, the battery heating branch road is provided with the 5th switch valve.
Optionally, the battery cooling for reflux branch road is provided with the 6th switch valve.
Optionally, the battery is heated to reflux branch road and is provided with the 7th switch valve.
Optionally, the battery is heated to reflux branch road and is additionally provided with the 4th check valve.
Optionally, the described first through-flow branch road is provided with the 8th switch valve, and the first throttle branch road is provided with the Two expansion valves.
Optionally, the heat pump air conditioning system further includes the first expansion switch valve, this first expansion switch valve entrance with The outlet of the outlet of the interior condenser, the first expansion switch valve is connected to the entrance of the outdoor heat exchanger, institute The throttling runner that first throttle branch is the first expansion switch valve is stated, the first through-flow branch expands for described first Close the through-flow runner of valve.
Optionally, the described second through-flow branch road is provided with the 9th switch valve, and the second throttling branch road is provided with the Three expansion valves.
Optionally, the heat pump air conditioning system is applied to electric car, and the heat pump air conditioning system further include: board-like Heat exchanger, wherein the plate heat exchanger is arranged in the described second through-flow branch, and the plate heat exchanger is arranged simultaneously In the electromotor cooling system of the electric car.
Optionally, the outlet of the refrigerant inlet of the plate heat exchanger and the outdoor heat exchanger, it is described board-like The refrigerant outlet of heat exchanger is connected to the entrance of the 9th switch valve.
Optionally, the electromotor cooling system includes motor, the motor connected with the plate heat exchanger to be formed into a loop Radiator and water pump.
Optionally, the heat pump air conditioning system further includes the second expansion switch valve, this second expansion switch valve entrance with First of the outlet of the outdoor heat exchanger, the outlet of the second expansion switch valve and the selective on or off The first end on road is connected to and is connected to the first end of the second branch of the selective on or off, the second throttling branch For the throttling runner of the second expansion switch valve, the second through-flow branch is the through-flow stream of the second expansion switch valve Road.
Optionally, the heat pump air conditioning system is applied to electric car, and the heat pump air conditioning system further include: board-like Heat exchanger, wherein the outlet of the refrigerant inlet of the plate heat exchanger and the second expansion switch valve, it is described board-like The refrigerant outlet of heat exchanger be connected to the first end of the first branch of the selective on or off and with the selectivity The first end of the second branch of on or off is connected to, and the electricity of the electric car is arranged in the plate heat exchanger simultaneously In machine cooling system.
Optionally, the electromotor cooling system includes coolant liquid main line, the first coolant liquid branch and the second coolant liquid branch, The first end on the coolant liquid main line selectively with the first end of the first coolant liquid branch or the second coolant liquid branch The first end on road is connected to, the second end of the second end of the first coolant liquid branch and the second coolant liquid branch with it is described cold But the second end connection on liquid main line, wherein motor, motor radiator and water pump are in series on the coolant liquid main line, in institute It states the first coolant liquid branch road and is in series with the plate heat exchanger.
Optionally, the heat pump air conditioning system further includes gas-liquid separator, the outlet of the gas-liquid separator and the pressure The entrance of contracting machine is connected to, and the second of the outlet of the entrance of the gas-liquid separator and the indoor evaporator and the first branch End connection, and the outlet of the evaporator in the battery pack is via the battery cooling for reflux branch of the selective on or off Road is connected to the entrance of the gas-liquid separator.
Optionally, the heat pump air conditioning system further includes ptc heater, which is used for flowing through the interior The wind of condenser is heated.
Optionally, the ptc heater is arranged in the windward side or leeward side of the indoor condenser.
Optionally, the battery pack includes battery pack cabinet and is arranged in the intracorporal multiple power batteries of the battery pack case, Evaporator in the battery pack is arranged in the battery pack cabinet and fits closely with the multiple power battery.
According to the second aspect of the invention, a kind of electric car is provided, including heat pump described in first aspect present invention Air-conditioning system.
Automobile sky can be realized in the case where not changing refrigerant circulation direction for heat pump air conditioning system provided by the invention Adjusting system refrigeration and heating, to playing the role of cooling and heating to battery, while being able to satisfy interior refrigeration and heating again and need It asks.When high-temperature refrigeration, the evaporator heat absorption that the refrigerant liquid of low-temp low-pressure enters in battery pack becomes gas, and realizes to electricity The refrigerating function of cell system；When low temperature heating, the evaporator that the refrigerant gas of high temperature and pressure enters battery pack is heated to battery, Realize the heating function to battery system.The present invention is a kind of novel air-conditioning heat pump system to the cooling heating of batteries of electric automobile System is directly exchanged heat with air-conditioning refrigerant to battery, and heat exchange efficiency is high, is not influenced by external environment, either in high temperature or low temperature Under environment, it can make battery work within the scope of suitable temperature, improve the efficiency for charge-discharge of battery, improve cruising ability, prolong Long battery life, it is ensured that safety.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Figure 1A is a kind of structural schematic diagram of the heat pump air conditioning system of embodiment according to the present invention；
Figure 1B is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 2 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 3 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 4 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 5 A is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 5 B is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 6 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 7 is the overlooking structure diagram for the expansion switch valve that the preferred embodiment for the present invention provides；
Fig. 8 is the schematic diagram of the section structure crossed by Fig. 7 middle line AB-AB, wherein the first valve port and the second valve port are located In opening state；
Fig. 9 is the positive structure diagram along a visual angle for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 10 is the schematic diagram of the section structure crossed by Fig. 7 middle line AB-AB, wherein the first valve port is in the open state, Second valve port is in closed state；
Figure 11 is the schematic diagram of the section structure crossed by Fig. 7 middle line AB-AB, wherein the first valve port is in closed state, Second valve port is in the open state；
Figure 12 is that the facing structure along another visual angle for the expansion switch valve that the preferred embodiment for the present invention provides is illustrated Figure；
Figure 13 is the schematic diagram of the section structure crossed by Figure 12 middle line AC-AC, wherein the first valve port is in open shape State, the second valve port are in closed state；
Figure 14 is the first schematic diagram of internal structure of the expansion switch valve that the preferred embodiment for the present invention provides, wherein the One valve port and the second valve port are in opening state；
Figure 15 is the partial enlarged view in the portion A in Figure 14；
Figure 16 is the second schematic diagram of internal structure of the expansion switch valve that the preferred embodiment for the present invention provides, wherein the One valve port is in the open state, and the second valve port is in close state；
Figure 17 is the third schematic diagram of internal structure for the expansion switch valve that the preferred embodiment for the present invention provides, wherein the One valve port is in close state, and the second valve port is in opening state.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usually phase For the page of attached drawing, " upstream, downstream " is that e.g., for the flow direction of refrigerant, have relative to medium Body, it is downstream towards the flow direction of refrigerant, is upstream away from the flow direction of refrigerant, " inside and outside " refers to corresponding portion Part profile it is interior with it is outer.
In the present invention, electric car may include pure electric automobile, hybrid vehicle, fuel cell car.
Figure 1A and Figure 1B is a kind of structural schematic diagram of the heat pump air conditioning system of embodiment according to the present invention.Such as Figure 1A Shown, which may include: HVAC (heating and ventilation and air-conditioning, Heating Ventilation and Air Conditioning) assembly 600, compressor 604 and outdoor heat exchanger 605 and it is internally provided with the battery pack 620 of evaporator.Its In, HVAC assembly 600 may include indoor condenser 601 and indoor evaporator 602.In addition, as shown in Figure 1A, compressor 604 Outlet be connected to the entrance of interior condenser 601, the egress selection of indoor condenser 601 via first throttle branch or First through-flow branch is connected to the entrance of outdoor heat exchanger 605, is throttled via second to the egress selection of outdoor heat exchanger 605 Branch or the second through-flow branch be connected to the first end of the first branch 620 of selective on or off and be connected with selectivity or The first end of the second branch 621 of cut-off is connected to, and the second end of the first branch 620 is connected to the entrance of compressor 604, and second The second end on road 621 is connected to the entrance of indoor evaporator 602, and the outlet of indoor evaporator 602 and the entrance of compressor 604 connect It is logical.
In addition, as shown in Figure 1A, the entrance of the evaporator in battery pack 625 is cold via the battery of selective on or off But branch 626 is with the outlet of outdoor heat exchanger 605 or via the cooling branch 626 of battery and the first of the first branch 620 The first end of end and second branch 621 is connected to (as shown in subsequent fig. 4 to fig. 6), and the cooling branch 626 of battery is the case where being connected Under battery pack 625 can be cooled down, avoid battery pack 625 from working at too high a temperature；Evaporator in battery pack 625 Entrance also via selective on or off battery heating branch 627 and compressor 604 outlet, battery heating props up Road 627 can heat battery pack 625 in the case where conducting, and battery pack 625 is avoided to work at a too low temperature；Electricity The outlet of the evaporator in 625 is wrapped via the battery cooling for reflux branch 628 and compressor 604 of selective on or off in pond Entrance connection, to form a circulation with the cooling branch 626 of above-mentioned battery；The outlet of evaporator in battery pack 625 via The battery of selective on or off is heated to reflux the outlet of branch 629 and indoor condenser 601, with above-mentioned battery It heats branch 627 and forms a circulation.
What needs to be explained here is that in the present invention, battery pack 625 may include battery pack cabinet and be arranged in the battery The intracorporal multiple power batteries of lodge, the evaporator in battery pack 625 above-mentioned can be arranged in battery pack cabinet And it is fitted closely with multiple power batteries.In this way, refrigerant exchanges heat when flowing through the evaporator in battery pack 625, and battery Evaporator in packet 625 is fitted closely with multiple power batteries, refrigerant is directly exchanged heat with power battery, raising is changed The thermal efficiency.
In the present invention, the first branch 620 and second branch 621 are selectively to be connected or cut according to actual needs Only.For example, as shown in Figure 1A, first switch valve 622 is provided in the first branch 620, when first switch valve 622 is opened When, the first branch 620 is connected, and when first switch valve 622 is closed, the first branch 620 is ended.In addition, in second branch 621 It is provided with second switch valve 623, when second switch valve 623 is opened, second branch 621 is connected, when second switch valve 623 is closed When, second branch 621 is ended.
In another embodiment, as shown in Figure 1B, heat pump air conditioning system can also include: the first triple valve 640, outdoor The egress selection of heat exchanger 605 via second throttling branch or the second through-flow branch and the first triple valve 640 entrance 640a connection, the first outlet 640b of the first triple valve 640 are connected to the first end of the first branch 620, the first triple valve 640 Second outlet 640c is connected to the first end of second branch 621.In this way, can control first by first triple valve 640 620 on or off of road, and control 621 on or off of second branch.
Illustratively, by controlling entrance 640a- first outlet 640b conducting and the entrance 640a- the of the first triple valve 640 Two outlet 640c are not turned on, and can control the conducting of the first branch 620, second branch 621 is ended；And pass through control the one or three The entrance 640a- first outlet 640b of port valve 640 is not turned on and entrance 640a- second outlet 640c is connected, and can control first The cut-off of branch 620, second branch 621 are connected.
In addition, when the first branch 620 is connected, refrigerant is flowed back into indoor evaporator 602 in order to prevent, optionally, such as Shown in Figure 1A and Figure 1B, the outlet of indoor evaporator 602 is connected to via the first check valve 624 with the entrance of compressor 604.This Sample is merely able to that refrigerant is allowed to flow to compressor 604 from indoor evaporator 602, and cannot flow round about.
In the present invention, the outlet of indoor condenser 601 or entering via first throttle branch and outdoor heat exchanger 605 Mouth is connected to or is connected to via the first through-flow branch with the entrance of outdoor heat exchanger 605.This can be realized using various ways Kind mode of communicating.For example, in one embodiment, as shown in FIG. 1A and 1B, heat pump air conditioning system can also include first Switch valve 603 is expanded, the entrance of the first expansion switch valve 603 and the outlet of indoor condenser 601, this first is expanded The outlet for closing valve 603 is connected to the entrance of outdoor heat exchanger 605, wherein first throttle branch is the first expansion switch valve 603 Throttle runner, and the first through-flow branch is the through-flow runner of the first expansion switch valve 603.
In the present invention, expansion switch valve is that have the function of expansion valve (also referred to as electric expansion valve function) simultaneously and open The valve for closing valve function (also referred to as solenoid valve function) can be regarded as being the integrated of switch valve and expansion valve.It is expanding The inside of switch valve is formed with through-flow runner and throttling runner, when expansion switch valve as switch valve in use, it internal leads to Runner conducting is flowed, forms through-flow branch at this time；When expansion switch valve as expansion valve in use, its inside throttling runner lead It is logical, throttling branch is formed at this time.
Embodiment alternatively, as shown in Fig. 2, the heat pump air conditioning system can also include the 8th switch valve 608 and second expansion valve 607, wherein the first through-flow branch road is provided with the 8th switch valve 608, and first throttle branch road is arranged There is the second expansion valve 607.Specifically, the outlet of indoor condenser 601 is via the 8th switch valve 608 and outdoor heat exchanger 605 Entrance is connected to form the first through-flow branch, and the outlet of indoor condenser 601 is via the second expansion valve 607 and outdoor heat exchanger 605 entrance is connected to form first throttle branch.When system is under high-temperature refrigeration mode, the conducting of the 8th switch valve 608, Second expansion valve 607 is closed, and the outlet of indoor condenser 601 connects via the entrance of the first through-flow branch and outdoor heat exchanger 605 It is logical.When system is under low temperature heating mode, the second expansion valve 607 conducting, the 8th switch valve 608 is closed, indoor condenser 601 outlet is connected to via first throttle branch with the entrance of outdoor heat exchanger 605.
It is similar with the implementation of the first through-flow branch and first throttle branch, as the second through-flow branch and the second section One of embodiment of branch is flowed, as shown in Figure 1, heat pump air conditioning system can also include the second expansion switch valve 606, it should Second expansion switch valve 606 entrance and outdoor heat exchanger 605 outlet, this second expansion switch valve 606 outlet with The first end of the first branch 620 of selective on or off be connected to and with the second branch of selective on or off 621 First end connection, wherein the second throttling branch is the throttling runner of the second expansion switch valve 606, and the second through-flow branch is second Expand the through-flow runner of switch valve 606.
Embodiment alternatively, as shown in figure 3, the heat pump air conditioning system can also include the 9th switch valve 610 and third expansion valve 609, wherein the second through-flow branch road is provided with the 9th switch valve 610, and the second throttling branch road is arranged There is third expansion valve 609.Specifically, as shown in figure 3, the outlet of outdoor heat exchanger 605 is via the 9th switch valve 610 and selectivity The first end of the first branch 620 of on or off is connected to and the first end with the second branch of selective on or off 621 Connection is to form the second through-flow branch, and the outlet of outdoor heat exchanger 605 is via third expansion valve 609 and selective on or off The first branch 620 first end connection and be connected to the first end of the second branch of selective on or off 621 to be formed Second throttling branch.When system is under high-temperature refrigeration mode, third expansion valve 609 is connected, and the 9th switch valve 610 is closed, The outlet of outdoor heat exchanger 605 via second throttling branch be connected to the first end of the first branch 620 of cut-off and with conducting The first end of second branch 621 is connected to.When system is under low temperature heating mode, the conducting of the 9th switch valve 610, third expansion Valve 609 is closed, and the outlet of outdoor heat exchanger 605 is connected to via the second through-flow branch with the first end of the first branch 620 of conducting And it is connected to the first end of the second branch of cut-off 621.
In order to facilitate pipeline laying, space hold is saved, it is preferable that use in heat pump air conditioning system provided by the invention First expansion switch valve 603 and the second expansion switch valve 606, that is, embodiment shown in Figure 1A and Figure 1B.
In addition, in the present invention, in embodiment as shown in Figure 1, the entrance of the evaporator in battery pack 625 is via electricity Pond cools down the outlet of branch 626 with outdoor heat exchanger 605, is provided with the first expansion valve 630 on the cooling branch 626 of battery, For carrying out throttling processing to refrigerant before refrigerant flows into battery pack.In addition, the cooling branch 626 of the battery is additionally provided with The entrance of third switch valve 631 and second one-way valve 632, the first expansion valve 630 passes through third switch valve 631 and outdoor heat exchanger 605 outlet, the entrance that the outlet of the first expansion valve 630 passes through the evaporator in second one-way valve 632 and battery pack 625 Connection.In the present embodiment, the outlet of outdoor heat exchanger 605 is formed as two-way, wherein leading to the second expansion switch valve all the way 606, the second expansion switch valve 606 is connected to the first end of the first branch 620 of selective on or off and leads with selectivity The first end connection of logical or cut-off second branch 621, another way are the cooling branch 626 of battery.
In another embodiment, as shown in figure 4, the entrance of the evaporator in battery pack 625 is via selective conducting Or the cooling branch 626 of battery of cut-off is connected to the first end of the first end of the first branch 620 and second branch 621.This In embodiment, flow valve 633 can be set on the cooling branch 626 of battery, for adjusting the evaporation entered in battery pack 625 The uninterrupted of the refrigerant of device.In addition, being additionally provided with the 4th switch valve 634 on the cooling branch 626 of the battery and third is unidirectional Valve 635, the entrance of flow valve 633 via the 4th switch valve 634 and the first branch 620 first end and second branch 621 the One end connection, the outlet of flow valve 633 is connected to via third check valve 635 with the entrance of the evaporator in battery pack 625.At this In embodiment, the outlet of outdoor heat exchanger 605 is connected to the entrance of the second expansion switch valve 606, the second expansion switch valve 606 Outlet be formed as three tunnels, wherein be connected to all the way with the first end of the first branch 620 of selective on or off, the second tunnel with The first end of the second branch 621 of selective on or off is connected to, and third road is the cooling branch 626 of battery.For convenience Pipeline is laid, and space hold is saved, it is preferable that implementation as shown in Figure 4 is used in heat pump air conditioning system provided by the invention Mode.
Fig. 4 shows the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention.Such as Fig. 4 institute Show, which can also include gas-liquid separator 611, wherein the outlet of indoor evaporator 602 and gas-liquid separator 611 entrance connection, the second end of the first branch 620 are connected to the entrance of gas-liquid separator 611, the evaporation in battery pack 625 The outlet of device is connected to via the battery cooling for reflux branch 628 of selective on or off with the entrance of gas-liquid separator 611, gas The outlet of liquid/gas separator 611 is connected to the entrance of compressor 604.In this way, through indoor evaporator 602, the first branch 620 second The refrigerant that end or battery cooling for reflux branch 628 flow out can first pass around gas-liquid separator 611 and carry out gas-liquid separation, separation Gas out is flowed back into again in compressor 604, thus prevent liquid refrigerant from entering compressor 604 and damaging compressor 604, So as to extend the service life of compressor 604, and improve the efficiency of entire heat pump air conditioning system.
It will carry out heat pump air conditioning system that the present invention is described in detail provides by taking Fig. 4 as an example under different working modes below Cyclic process and principle.System it should be understood that other embodiments under (for example, Fig. 1 to embodiment shown in Fig. 3) Cyclic process and principle with Fig. 4 be it is similar, just no longer repeat one by one herein.
Firstly the need of explanation, the 5th switch valve 636, battery cooling for reflux branch are provided on battery heating branch 627 The 6th switch valve 637 is provided on road 628, battery, which is heated to reflux on branch 629, is provided with the 7th switch valve 638, and battery is cooling The 4th switch valve 634 is provided on branch 626, opening and closing through above-mentioned switch valve combination, may be implemented each branch conducting or Cut-off.
Mode one: high-temperature refrigeration mode.System in this mode when, whole system forms high-temperature refrigeration circulation System.As shown in figure 4, firstly, gas of the compressor 604 through overcompression discharge high temperature and pressure, is connected with indoor condenser 601. At this point, control wind is without indoor condenser 601, due to calm process, not will do it heat in condenser 601 indoors Exchange, the interior condenser 601 are only used as runner, and the indoor outlet of condenser 601 at this time is still the gas of high temperature and pressure.Room The outlet of inner condenser 601 is connected with the first expansion switch valve 603, and the first expansion switch valve 603 plays switch valve action at this time, only makees It is flowed through for runner, the first expansion switch valve 603 outlet at this time is still the gas of high temperature and pressure.First expansion switch valve 603 exports It is connected with outdoor heat exchanger 605, outdoor heat exchanger 605 and outdoor air exchange heat, and heat are dispersed into air, outdoor heat exchanger 605 outlets are the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 is connected with the second expansion switch valve 606, the second expansion at this time Switch valve 606 plays expansion valve action, plays throttling action as restricting element, outlet is low temperature and low pressure liquid.Second expansion 606 aperture of switch valve can give certain aperture according to actual needs, this aperture can be according to being mounted on indoor evaporator 602 Outlet and gas-liquid separator 611 entrance between pressure-temperature sensor pressure and temperature acquisition data calculate evaporate Device exports refrigerant superheat degree to adjust.First switch valve 622 is closed, and second switch valve 623 is opened, in this way, the first branch 620 Cut-off, second branch 621 are connected.The low temperature and low pressure liquid come out from the second expansion switch valve 606 enters the room in evaporator 602 It is evaporated, so that the outlet of indoor evaporator 602 is the gas of low-temp low-pressure.
In this circulation, the 5th switch valve 636 and the 7th switch valve 638 are closed, and make battery heating branch 627 and battery It is heated to reflux the disconnection of branch 629, opens simultaneously the 4th switch valve 634 and the 6th switch valve 637, makes cooling 626 He of branch of battery Battery cooling for reflux branch 628 is connected.In this way, being divided into from the low-temperature low-pressure refrigerant liquid that the second expansion switch valve 606 comes out Two-way, the first via flow through the 4th switch valve 634 and enter in the evaporator of battery pack 625, and the refrigerant liquid of low-temp low-pressure exists The heat that evaporator in battery pack 625 absorbs battery becomes refrigerant gas, comes out from the evaporator outlet in battery pack 625 Refrigerant gas flow through the 6th switch valve 637 and the low temperature low pressure gas on the second following tunnels collaborates；Second tunnel is via second Branch 621 flows through indoor evaporator 602, by indoor evaporator 602 absorb heat become low-temp low-pressure refrigerant gas and with it is upper The first via low temperature low pressure gas stated collaborates, and the gas behind interflow enters gas-liquid separator 611, and last refrigerant is by gas-liquid point 604 entrance of compressor is returned to from device outlet, and then forms a circulation.The flow direction of 600 apoplexy of HVAC assembly flows only through room at this time Interior evaporator 602, the calm process of indoor condenser 601, only flows through as refrigerant flow path.
Mode two: low temperature heating mode.System in this mode when, whole system forms low temperature heating circulation System.As shown in figure 4, firstly, compressor 604 through overcompression discharge high temperature and pressure gas, be connected with indoor condenser 601, The gas of high temperature and pressure is condensed in condenser 601 indoors, so that the indoor outlet of condenser 601 is the liquid of medium temperature high pressure Body.The indoor outlet of condenser 601 is connected with the first expansion switch valve 603, and the first expansion switch valve 603 plays the work of expansion valve at this time With playing throttling action as restricting element, outlet is the liquid of low-temp low-pressure.Wherein, first expands opening for switch valve 603 Degree can give certain aperture according to actual needs, this aperture can be according to the pressure-in the exit for being mounted on compressor 604 Temperature acquisition data, that is, compressor exhaust temperature number of temperature sensor is adjusted.First expansion switch valve 603 outlet with Outdoor heat exchanger 605 is connected, and outdoor heat exchanger 605 absorbs the heat of outdoor air, and the outlet of outdoor heat exchanger 605 is low-temp low-pressure Gas.The outlet of outdoor heat exchanger 605 is connected with the second expansion switch valve 606, and the second expansion switch valve 606 plays switch valve at this time Effect, only flow through as a runner.First switch valve 622 is opened, and second switch valve 623 is closed, in this way, the first branch 620 conductings, second branch 621 are ended.The gas of the low-temp low-pressure come out from the second expansion switch valve 606 is directly entered gas-liquid point From device 611, the liquid not being evaporated is separated by gas-liquid separator 611, the gas of last low-temp low-pressure returns to compressor 604 In, a circulation is consequently formed.
In this circulation, the 5th switch valve 636 and the 7th switch valve 638 are opened, and make battery heating branch 627 and battery It is heated to reflux the conducting of branch 629, simultaneously closes off the 4th switch valve 634 and the 6th switch valve 637, makes cooling 626 He of branch of battery Battery cooling for reflux branch 628 disconnects.In this way, being divided into two-way from the high temperature and high pressure gas that compressor 604 comes out, the first via is flowed through 5th switch valve 636 enters battery pack 625, and the refrigerant gas of high temperature and pressure heats battery pack 625, and in battery pack Become medium temperature high pressure refrigerant liquid after evaporator heat exchange in 625, the medium temperature on the refrigerant liquid and the second following tunnels is high Press liquid interflow；Second road flows through indoor condenser 601, becomes the refrigerant liquid of medium temperature high pressure by indoor condenser 601 Collaborate with above-mentioned first via high temperature high pressure liquid, the liquid behind interflow enters the first expansion switch valve 603, and then forms one A circulation.
Bellows design based on existing HVAC, if it is desired to control wind by indoor condenser 601, then wind first has to By can just enter the room condenser 601 after indoor evaporator 602.But under heating mode in indoor evaporator 602 not It can be carried out heat exchange, therefore, the first branch 620 be connected, end second branch 621, so that indoor evaporator 602 is shorted, i.e., It is distinguished and admirable through indoor evaporator 602, refrigerant temperature will not be affected.
In conclusion heat pump air conditioning system provided by the invention, in the case where not changing refrigerant circulation direction It realizes automotive air-conditioning system refrigeration and heating, to play the role of cooling and heating to battery, while being able to satisfy interior system again Cold and heating demands.When high-temperature refrigeration, the evaporator heat absorption that the refrigerant liquid of low-temp low-pressure enters in battery pack becomes gas, And realization is to the refrigerating function of battery system；When low temperature heating, the refrigerant gas of high temperature and pressure enters the evaporator of battery pack It is heated to battery, realizes the heating function to battery system.The present invention is that one kind is novel to be heated to batteries of electric automobile is cooling Air conditioner heat pump system, directly give battery to exchange heat with air-conditioning refrigerant, heat exchange efficiency is high, is not influenced by external environment, is either existed Under high temperature or low temperature environment, it can make battery work within the scope of suitable temperature, improve the efficiency for charge-discharge of battery, improve Cruising ability extends battery life, it is ensured that safety.
In the above-described embodiment, the outlet of indoor evaporator 602 can be via the first check valve 624 and gas-liquid separation The entrance of device 611 is connected to, and is heated to reflux on branch 629 in battery and is additionally provided with the 4th check valve 639.In this manner it is ensured that stream Body is only able to maintain single flow direction in the loop, avoids harm caused by reflux.Preferably, the setting of the 4th check valve 639 exists Switch valve is arranged the control that can reinforce being opened and closed in upstream to branch in the downstream of 7th switch valve 638.
Further, it is also provided with flow valve 633 on the cooling branch 626 of battery, it can be to the cooling branch of battery 626 flows for flowing through battery pack 625 are controlled, and prevent gas stream or liquid flow from crossing large impact battery pack 625, influence its use Service life；Third check valve 635 can also be set on the cooling branch 626 of battery simultaneously, it correspondingly, can also be to avoid the danger of reflux Evil.
In this case, preferably, the downstream of the 4th switch valve 634, also, third list is arranged in flow valve 633 The downstream of 4th switch valve 634 is set to valve 635, the control being opened and closed to branch can be reinforced.In this way, fluid is cooling in battery Flow direction on branch 626 is the 4th 635 → battery pack of switch valve 634 → flow valve, 633 → third check valve 625.
Under low temperature heating mode, in order to improve heating ability, it is preferable that as fig. 5 a and fig. 5b, in entire heat pump Plate heat exchanger 612 is provided in air-conditioning system, the motor which is also disposed in electric car simultaneously is cooling In system.In this way, the waste heat that can use electromotor cooling system gives air-conditioning system refrigerant heat, so that compressor can be improved 604 suction temperature and inspiratory capacity.
For example, as shown in Figure 5A, using the implementation of third expansion valve 609 and the 9th switch valve 610 in heat pump air conditioning system In mode, plate heat exchanger 612 can be arranged in as shown in Figure 5A in the second through-flow branch.For example, in one embodiment, The refrigerant inlet 612a of plate heat exchanger 612 and the outlet of outdoor heat exchanger 605, the refrigerant of plate heat exchanger 612 Outlet 612b is connected to the entrance of the 9th switch valve 610.Alternatively, (not shown) in another embodiment, plate heat exchanger 612 refrigerant inlet 612a can also be with the outlet of the 9th switch valve 610, the refrigerant outlet of plate heat exchanger 612 612b is connected to the first end of the first branch 620 of selective on or off and the second branch with selective on or off 621 first end connection.
At the same time, plate heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in Figure 5A, motor cooling system System may include the motor, motor radiator 613 and water pump 614 connected with plate heat exchanger 612 to be formed into a loop.In this way, system Cryogen can carry out heat exchange by the coolant liquid in plate heat exchanger 612 and electromotor cooling system.Refrigerant is opened by the 9th After closing valve 610 and first switch valve 622, return in compressor 604.
Alternatively, as shown in Figure 5 B, it is board-like in embodiment of the heat pump air conditioning system using the second expansion switch valve 606 The outlet of the expansion switch valve 606 of the refrigerant inlet 612a of heat exchanger 612 and second, the refrigerant of plate heat exchanger 612 Outlet 612b with selectivity on or off the first branch 620 first end be connected to and with selective on or off second The first end of branch 621 is connected to, and plate heat exchanger 612 is arranged in the electromotor cooling system of electric car simultaneously.In this way, Refrigerant can carry out heat exchange by the coolant liquid in plate heat exchanger 612 and electromotor cooling system.Refrigerant passes through first After switch valve 622, return in compressor 604.
By plate heat exchanger 612, heating ability of the air-conditioning system under low temperature heating mode can be improved.
But, in embodiment of the heat pump air conditioning system shown in Fig. 5 B using the second expansion switch valve 606, in order to keep away Exempt under high-temperature refrigeration mode carry out refrigerant heating, can be controlled whether using valve in plate heat exchanger 612 into Row heat exchange.Specifically, electromotor cooling system may include coolant liquid main line 616, the first coolant liquid branch 617 and the second cooling Liquid branch 618, wherein the first end on the coolant liquid main line 616 selectively first end or second with the first coolant liquid branch 617 The first end of coolant liquid branch 618 is connected to.For example, in one embodiment, the first end on coolant liquid main line 616 can be with The import 615a of two triple valves 615 is connected to, and the first end of the first coolant liquid branch 617 can be with the first of the second triple valve 615 615b connection is exported, the first end of the second coolant liquid branch 618 can be connected to the second outlet 615c of the second triple valve 615, As a result, by second triple valve 615, can control the first end on coolant liquid main line 616 selectively with the first coolant liquid branch The first end on road 617 or the connection of the first end of the second coolant liquid branch 618.In addition, as shown in Figure 5 B, the first coolant liquid branch 617 second end is connected to the second end on coolant liquid main line 616, and the second end of the second coolant liquid branch 618 also with cooling The second end on liquid main line 616 is connected to, wherein motor, motor radiator 613 and water pump are in series on coolant liquid main line 616 614, plate heat exchanger 612 is in series on the first coolant liquid branch 617.
In this way, at this time in order to improve heating ability, being needed board-like when air-conditioning system work is under low temperature heating mode Refrigerant is heated in heat exchanger 612.Therefore, in such a case, it is possible to make the by controlling the second triple valve 615 One coolant liquid branch 617 conducting, the coolant liquid in cooling system flows through plate heat exchanger 612 as a result, at this point it is possible to realize with The heat exchange of refrigerant.However, not needed in plate heat exchanger 612 at this time when system work is under high-temperature refrigeration mode Refrigerant is heated.Therefore, in such a case, it is possible to make the second coolant liquid branch by controlling the second triple valve 615 Road 618 is connected, and the coolant liquid in cooling system is not passed through plate heat exchanger 612 as a result, and plate heat exchanger 612 is as just system The runner of cryogen flows through.
In heat pump air conditioning system provided by the invention, the various refrigerants such as R134a, R410a, R32, R290 can be used, It is preferential to select high temperature refrigerant.
Fig. 6 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention.As shown in fig. 6, hot Pump air conditioner system can also include ptc heater 619, the ptc heater 619 be used for flow through the wind of indoor condenser 601 into Row heating.
In the present invention, ptc heater 619 can be high pressure PTC (being driven by vehicle high-tension battery), voltage range: 200V-900V.Alternatively, ptc heater 619 or low pressure PTC (driving of 12V or 24V battery), voltage range: 9V- 32V.In addition, this ptc heater 619 can be by several or several pieces of PTC ceramics piece modules and radiating fin form one it is complete Whole core, or the strip with radiating fin or block-like PTC ceramics piece module.
In the present invention, which can arrange the windward side or leeward side of condenser 601 indoors.And And in order to improve the heating effect to the wind for flowing through indoor condenser 601, which can be with indoor condenser 601 are arranged in parallel.In other embodiments, which can also be arranged in blowing for the cabinet of HVAC assembly 600 At foot air port and defrosting outlet, it can also be arranged at the air port of defrosting duct.
It is cold with interior if ptc heater 619 to be arranged in the windward side or leeward side of cabinet interior room inner condenser 601 Condenser 601 be arranged in parallel, can the grooving on cabinet shell, ptc heater 619, which is inserted perpendicularly into, puts cabinet into, can also be indoors Welding support on 601 side plate of condenser, ptc heater 619 are fixed by screws on the bracket of indoor condenser 601.If Ptc heater 619 is arranged in the blowing at foot air port and defrosting outlet of cabinet, or is arranged at the air port of defrosting duct, can be led to Screw is crossed to be directly anchored at the air port of box air outlet and wind passage mouth.
By this embodiment, when outside temperature is too low, and the heating capacity of heat pump low temperature heating is unsatisfactory for interior demand, 619 auxiliary heating heating of ptc heater can be run, it is possible thereby to heating capacity is small when eliminating heat pump air conditioning system low-temperature heating, it is whole The defects of vehicle defrosting-defogging is slow, and heating effect is bad.
As above, in the present invention, expansion switch valve is the valve simultaneously with expansion valve and switch valve function, can be with It is regarded as being the integrated of switch valve and expansion valve.It will be provided below a kind of example embodiment for expanding switch valve.
As shown in fig. 7, expansion switch valve mentioned above may include valve body 500, wherein be formed on the valve body 500 Import 501, outlet 502 and connection are in import 501 and export the inner flow passage between 502, are equipped with first on inner flow passage Spool 503 and the second spool 504, the first spool 503 make import 501 directly be connected to or disconnect connection, the second valve with outlet 502 Core 504 makes import 501 be connected to or disconnect connection by restriction 505 with outlet 502.
Wherein, " directly connection " that the first spool is realized refers to that the coolant that enters from the import 501 of valve body 500 can be with It crosses the first spool and passes through the outlet 502 that inner flow passage insusceptibly flows directly to valve body 500, what the first spool was realized " disconnecting connection " refers to that the coolant entered from the import 501 of valve body 500 can not cross the first spool and cannot pass through inside stream Road flows to the outlet 502 of valve body 500." being connected to by restriction " that second spool is realized refers to the import 501 from valve body 500 The coolant of entrance can cross the second spool and flow to the outlet 502 of valve body 500 after passing through the throttling of restriction, and the second valve " disconnect connection " that core is realized refer to the coolant entered from the import 501 of valve body 500 can not cross the second spool and cannot The outlet 502 of valve body 500 is flowed to by restriction 505.
In this way, expansion switch valve of the invention can make from import by the control to the first spool and the second spool 501 coolants entered at least realize three kinds of states.That is, 1) off state；2) the direct connected state of the first spool 503 is crossed State；And 3) cross the throttling mode of communicating of the second spool 504.
Wherein, after the liquid refrigerant of high temperature and pressure throttles using restriction 505, the mist of low-temp low-pressure can be become Hydraulic refrigerant, can create conditions for the evaporation of refrigerant, i.e. the cross-sectional area of restriction 505 cross that is less than outlet 504 Sectional area, and by the second spool of control, the opening size of restriction 505 is adjustable, flows through restriction 505 with control Flow prevents the refrigeration because of the very few generation of refrigerant insufficient, and prevents from making compressor generate liquid hammer because refrigerant is excessive Phenomenon.That is, the cooperation of the second spool 504 and valve body 500 can to expand and close valve and have the function of expansion valve.
In this way, by installing the first spool 503 and the second spool 504 on the inner flow passage of same valve body 500, to realize The control of the on-off of import 501 and outlet 502 and/or throttling control function, structure is simple, is readily produced and installs, and works as this hair When the expansion switch valve of bright offer is applied to heat pump system, it is possible to reduce the refrigerant charge of entire heat pump system, reduce at This, simplifies piping connection, the more conducively oil return of heat pump system.
As a kind of illustrative inner mounting structure of valve body 500, as shown in Fig. 7 to Figure 12, valve body 500 includes being formed The valve seat 510 of inner flow passage and the first valve casing 511 and the second valve casing 512 being mounted on the valve seat 510, in the first valve casing 511 The first electromagnetic drive part 521 for driving the first spool 503 is installed, is equipped in the second valve casing 512 for driving second Second electromagnetic drive part 522 of spool 504, the first spool 503 extend to the inner flow passage in valve seat 510 from the first valve casing 511, Second spool 504 extends to the inner flow passage in valve seat 510 from the second valve casing 512.
Wherein, by the first electromagnetic drive part 521, e.g., electromagnetic coil, the control of power on/off can easily control The position of first spool 503, and then control import 501 and be directly connected to or disconnect connection with outlet 502；By being driven to the second electromagnetism Dynamic portion 522, e.g., electromagnetic coil, the control of power on/off can easily control the position of the second spool 504, thus control into Whether mouth 501 and outlet 502 are connected to restriction 505.In other words, shared import 501 and outlet have been installed in parallel in valve body 500 502 electric expansion valve and solenoid valve, it is thus possible to realize the on-off of expansion switch valve and/or the automation control of throttling, and Simplify pipeline trend.
For the spatial position for making full use of all directions for expanding switch valve, expansion switch valve and different piping connections are avoided Interference is generated, valve seat 510 is formed as polyhedral structure, the first valve casing 511,502 difference of the second valve casing 512, import 501 and outlet It is arranged on the different surfaces of the polyhedral structure, wherein the installation direction of the first valve casing 511 and the second valve casing 512 mutually hangs down Directly, the opening direction of import 501 and outlet 502 is mutually perpendicular to.In this way, import, export pipeline can be connected to polyhedron knot On the different surfaces of structure, it can be avoided that pipeline arrangement is in disorder, the problem of tangling.
As expansion switch valve a kind of typical internal structure, as shown in Figure 7 to 10, inner flow passage include respectively with The first runner 506 and second flow channel 507 that import 501 is connected to, are formed on first runner 506 and the first spool 503 cooperation First valve port 516, restriction 505 are formed in second flow channel 507 to be formed as the second valve port cooperated with the second spool 504 517, first runner 506 and second flow channel 507 are intersected in the downstream of the second valve port 517 and are connected to outlet 502.
That is, realizing closing or opening to the first valve port 516 by the position for converting the first spool 503, and then control It is connected to the truncation or conducting of the first runner 506 of import 501 and outlet 502, so as to realize above-described solenoid valve Connection or the function of disconnecting connection.Similarly, cutting to the second valve port 517 is realized by converting the position of the second spool 504 Disconnected or conducting, so as to realize the throttling function of electric expansion valve.
First runner 506 and second flow channel 507 can be respectively communicated with import 501 and outlet with any appropriate arrangement 502, for the whole occupied space for reducing valve body 500, as shown in figure 11, second flow channel 507 opens up in the same direction with outlet 502, and first Runner 506 be formed as with the orthogonal first through hole 526 of second flow channel 507, import 501 is by being provided with second flow channel 507 The second through-hole 527 on side wall is connected to second flow channel 507, and first through hole 526 and the second through-hole 527 connect respectively with import 501 It is logical.Wherein, first through hole 526 can be arranged or be arranged in parallel in spatial vertical with the second through-hole 527, and the present invention does not make this Limitation, all belong to the scope of protection of the present invention among.
For the whole occupied space for being further simplified valve body 500, as shown in Figure 14 to Figure 17, import 501 and 502 phases of outlet Mutually vertically it is provided on valve body 500.In this way, as shown in Figure 14 to Figure 16, the axis of import 501 exports 502 axis (i.e. The axis of second flow channel 507) and the axis of first runner 506 it is vertically arranged two-by-two in space, to prevent the first spool 503 and second spool 504 mobile generation interference, and can maximumlly utilize valve body 500 inner space.
It as shown in Figure 10 and Figure 11, is the closing and opening that are easy to implement the first valve port 516, the first spool 503 is along moving Direction is with the coaxial laying of the first valve port 516 selectively to block or be detached from the first valve port 516.
For the closing and opening for being easy to implement the second valve port 517, the second spool 504 is along moving direction and the second valve port 517 It is coaxial to lay selectively to block or be detached from the second valve port 517.
Wherein, as shown in figure 13, reliability first runner 506 blocked for the first spool 503 of guarantee, the first spool 503 may include the first valve rod 513 and the first plug 523 for being connected to 513 end of the first valve rod, which uses In on the end face for being sealed against the first valve port 516 to block first runner 506.
For the opening size convenient for adjusting the restriction 505 of expansion switch valve, as shown in Figure 10 and Figure 11, the second spool 504 include the second valve rod 514, and the end of second valve rod 514 is formed as taper header structure, and the second valve port 517 is formed as and is somebody's turn to do The taper pore structure that taper header structure matches.
Wherein, 505 aperture of restriction for expanding switch valve can be adjusted by moving up and down for second spool 504, and Moving up and down for second spool 504 can be adjusted by the second electromagnetic drive part 522.If expanding the restriction 505 of switch valve Aperture be zero, as shown in Figure 10, the second spool 504 is in extreme lower position, and the second spool 504 blocks the second valve port 517, refrigeration Agent cannot pass through restriction 505, i.e. the second valve port 517 completely；If expanding switch valve restriction 505 has aperture, such as Figure 11 institute Show that there is gap between the taper header structure and restriction 505 of the end of the second spool 504, flow to out again after refrigerant throttling Mouth 502.It, can be by controlling the second electromagnetic drive part 522, so that second when if desired increasing the throttle opening of expansion switch valve Spool 504 moves up, so that taper header structure is far from restriction 505, to realize becoming larger for 505 aperture of restriction；Phase Instead, it when needing to reduce the aperture of restriction 505 of expansion switch valve, can drive mobile under 504 phase of the second spool.
In use, when only needing the solenoid valve function using expansion switch valve, as shown in Figure 10, Figure 13 and Figure 16, the One spool 503 is detached from the first valve port 516, and the first valve port 516 is in the open state, and the second spool 504 is in extreme lower position, and second Spool 504 blocks throttle orifice 505, and the refrigerant for flowing into inner flow passage from import 501 cannot pass through throttle orifice completely 505, the first valve port 516 can only be passed sequentially through, first through hole 526 flows into outlet 502.When solenoid valve power-off, the first spool 503 are moved to the left, and the first plug 523 and the separation of the first valve port 516, refrigerant can pass through from first through hole 526；Work as electromagnetism Valve is powered, and the first spool 503 moves right, and the first plug 523 and the fitting of the first valve port 516, refrigerant can not be from first through hole Pass through in 526.
It should be noted that the dotted line with the arrow in Figure 10 and Figure 16 represents refrigerant when using solenoid valve function Flow route and trend.
When only needing the electric expansion valve function using expansion switch valve, as shown in Figure 11 and Figure 17, the second valve port 517, i.e. restriction 505 is in the open state, and the first spool 503 blocks the first valve port 516, flows into inside stream from import 501 The refrigerant in road can not can only pass sequentially through the second through-hole 527, restriction 505 flows into outlet 502 by first through hole 526 In, and can move up and down the second spool 504 to adjust the size of the aperture of restriction 505.
It should be noted that the dotted line with the arrow in Figure 11 and Figure 17, which represents refrigerant, is using electric expansion valve function When flow route and trend.
When needing while using the solenoid valve function and electric expansion valve function of expansion switch valve, such as Fig. 8, Figure 14 and figure Shown in 15, wherein dotted line with the arrow represents the glide path and trend of refrigerant, and the first spool 503 is detached from the first valve port 516, the first valve port 516 is in the open state, and restriction 505 is in the open state, and the refrigerant for flowing into inner flow passage can be with Respectively along first runner 506 and the flow direction of second flow channel 507 outlet 502, to have the function of solenoid valve and electric expansion valve simultaneously Function.
It should be understood that one of example of the above embodiment as just expansion switch valve, and and do not have to In the limitation present invention, other have the function of that the expansion switch valve of expansion valve and switch valve function is equally applicable to the present invention simultaneously.
The present invention also provides a kind of electric cars, including the above-mentioned heat pump air conditioning system provided according to the present invention.Wherein, should Electric car may include pure electric automobile, hybrid vehicle, fuel cell car.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should also be regarded as the disclosure of the present invention.

Claims (27)

1. a kind of heat pump air conditioning system, which is characterized in that the system comprises: indoor condenser (601), indoor evaporator (602), compressor (604), outdoor heat exchanger (605) and the battery pack (625) for being internally provided with evaporator, the interior condensation The egress selection of device (601) ground entering via first throttle branch or the first through-flow branch and the outdoor heat exchanger (605) Mouthful connection, the egress selection of the outdoor heat exchanger (605) via second throttling branch or the second through-flow branch and selection Property on or off the first branch (620) first end connection and with the second branch of selective on or off (621) First end connection, the second end of the first branch (620) are connected to the entrance of the compressor (604), the second branch (621) second end is connected to the entrance of the indoor evaporator (602), the outlet of the indoor evaporator (602) with it is described The entrance of compressor (604) is connected to, the entrance of the evaporator in the battery pack (625) via selective on or off electricity The outlet of pond cooling branch (626) and the outdoor heat exchanger (605) or via the battery cooling branch (626) with The first end connection of the first end and second branch (621) of the first branch (620), and via selective on or off Battery heating branch (627) and the compressor (604) outlet, evaporator in the battery pack (625) out Mouth is connected to via the battery cooling for reflux branch (628) of selective on or off with the entrance of the compressor (604), and The outlet of branch (629) and the indoor condenser (601) is heated to reflux via the battery of selective on or off.
2. heat pump air conditioning system according to claim 1, which is characterized in that be provided on the first branch (620) One switch valve (622).
3. heat pump air conditioning system according to claim 1, which is characterized in that be provided on the second branch (621) Two switch valves (623).
4. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system further include: first Triple valve (640), the egress selection of the outdoor heat exchanger (605) via second throttling branch or the second through-flow branch with The entrance of first triple valve (640) is connected to, the first outlet and the first branch of first triple valve (640) (620) first end connection, the second outlet of first triple valve (640) and the first end of the second branch (621) connect It is logical.
5. heat pump air conditioning system according to claim 1, which is characterized in that the outlet of the indoor evaporator (602) passes through It is connected to by the first check valve (624) with the entrance of the compressor (604).
6. heat pump air conditioning system according to claim 1, which is characterized in that evaporator in the battery pack (625) Entrance cools down the outlet of branch (626) and the outdoor heat exchanger (605) via the battery, and cold in the battery But the first expansion valve (630) are provided on branch (626).
7. heat pump air conditioning system according to claim 6, which is characterized in that the battery is also set on cooling branch (626) It is equipped with third switch valve (631) and second one-way valve (632), the entrance of first expansion valve (630) is opened by the third Close the outlet of valve (631) and the outdoor heat exchanger (605), the outlet of first expansion valve (630) passes through described the Two check valves (632) are connected to the entrance of the evaporator in the battery pack (625).
8. heat pump air conditioning system according to claim 1, which is characterized in that evaporator in the battery pack (625) Entrance via the battery cooling branch (626) and the first branch (620) first end and second branch (621) first End connection, and flow valve (633) are provided on the battery cooling branch (626).
9. heat pump air conditioning system according to claim 8, which is characterized in that the battery is also set on cooling branch (626) It is equipped with the 4th switch valve (634) and third check valve (635), the entrance of the flow valve (633) is via the 4th switch valve (634) it is connected to the first end of the first end of the first branch (620) and second branch (621), the flow valve (633) Outlet is connected to via the third check valve (635) with the entrance of the evaporator in the battery pack (625).
10. heat pump air conditioning system according to claim 1, which is characterized in that be arranged on battery heating branch (627) There is the 5th switch valve (636).
11. heat pump air conditioning system according to claim 1, which is characterized in that on the battery cooling for reflux branch (628) It is provided with the 6th switch valve (637).
12. heat pump air conditioning system according to claim 1, which is characterized in that the battery is heated to reflux on branch (629) It is provided with the 7th switch valve (638).
13. heat pump air conditioning system according to claim 12, which is characterized in that the battery is heated to reflux branch (629) On be additionally provided with the 4th check valve (639).
14. heat pump air conditioning system according to claim 1, which is characterized in that the first through-flow branch road is provided with the Eight switch valves (608), the first throttle branch road are provided with the second expansion valve (607).
15. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system further includes first It expands switch valve (603), the outlet of the entrance of first expansion switch valve (603) and the indoor condenser (601) should The outlet of first expansion switch valve (603) is connected to the entrance of the outdoor heat exchanger (605), and the first throttle branch is institute The throttling runner of the first expansion switch valve (603) is stated, the first through-flow branch is the logical of first expansion switch valve (603) Flow runner.
16. heat pump air conditioning system according to claim 1, which is characterized in that the second through-flow branch road is provided with the Nine switch valves (610), the second throttling branch road are provided with third expansion valve (609).
17. heat pump air conditioning system according to claim 16, which is characterized in that the heat pump air conditioning system is applied to electronic Automobile, and the heat pump air conditioning system further include: plate heat exchanger (612), wherein plate heat exchanger (612) setting In the described second through-flow branch, and the motor cooling of the electric car is arranged in the plate heat exchanger (612) simultaneously In system.
18. heat pump air conditioning system according to claim 17, which is characterized in that the refrigeration of the plate heat exchanger (612) The refrigerant outlet of the outlet of agent entrance and the outdoor heat exchanger, the plate heat exchanger (612) is opened with the described 9th Close the entrance connection of valve (610).
19. heat pump air conditioning system described in 7 or 18 according to claim 1, which is characterized in that the electromotor cooling system include with The motor, motor radiator (613) and water pump (614) that the plate heat exchanger (612) is connected to be formed into a loop.
20. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system further includes second It expands switch valve (606), the entrance of second expansion switch valve (606) and the outlet of the outdoor heat exchanger (605) should Second expansion switch valve (606) outlet with it is described selectivity on or off the first branch (620) first end be connected to and It is connected to the first end of the second branch (621) of the selective on or off, the second throttling branch is described second The throttling runner of switch valve (606) is expanded, the second through-flow branch is the through-flow stream of second expansion switch valve (606) Road.
21. heat pump air conditioning system according to claim 20, which is characterized in that the heat pump air conditioning system is applied to electronic Automobile, and the heat pump air conditioning system further include: plate heat exchanger (612), wherein the system of the plate heat exchanger (612) Cryogen entrance and it is described second expansion switch valve (606) outlet, the refrigerant outlet of the plate heat exchanger (612) with The first end connection of the first branch (620) of the selectivity on or off and with the selective on or off second The first end of branch (621) is connected to, and the motor cooling of the electric car is arranged in the plate heat exchanger (612) simultaneously In system.
22. heat pump air conditioning system according to claim 21, which is characterized in that the electromotor cooling system includes coolant liquid Main line (616), the first coolant liquid branch (617) and the second coolant liquid branch (618), the first of the coolant liquid main line (616) Hold the selectively first end with the first end of the first coolant liquid branch (617) or the second coolant liquid branch (618) Connection, the second end of the second end of the first coolant liquid branch (617) and the second coolant liquid branch (618) with it is described cold But the second end connection of liquid main line (616), wherein be in series with motor, motor radiator on the coolant liquid main line (616) (613) and water pump (614) plate heat exchanger (612), are in series on the first coolant liquid branch (617).
23. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system further includes gas-liquid The outlet of separator (611), the gas-liquid separator (611) is connected to the entrance of the compressor (604), the gas-liquid separation The entrance of device (611) is connected to the second end of the outlet of the indoor evaporator (602) and the first branch (620), and The outlet of evaporator in the battery pack (625) via the selective on or off battery cooling for reflux branch (628) it is connected to the entrance of the gas-liquid separator (611).
24. heat pump air conditioning system according to claim 1, which is characterized in that the heat pump air conditioning system further includes that PTC adds Hot device (619), the ptc heater (619) are used to heat the wind for flowing through the indoor condenser (601).
25. heat pump air conditioning system according to claim 24, which is characterized in that the ptc heater (619) is arranged in institute State the windward side or leeward side of indoor condenser.
26. heat pump air conditioning system according to claim 1, which is characterized in that the battery pack (625) includes battery lodge Body and the evaporator being arranged in the intracorporal multiple power batteries of the battery pack case, the battery pack (625) are arranged in the electricity It is fitted closely in the lodge body of pond and with the multiple power battery.
27. a kind of electric car, which is characterized in that including heat pump air conditioner system described according to claim 1 any one of -26 System.
CN201610309157.1A 2016-05-10 2016-05-10 Heat pump air conditioning system and electric car Active CN107351630B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6964178B2 (en) * 2004-02-27 2005-11-15 Denso Corporation Air conditioning system for vehicle
CN101279580A (en) * 2008-05-30 2008-10-08 清华大学 Residual heat pump air conditioner system for fuel-cell vehicle
CN101410577A (en) * 2003-02-18 2009-04-15 贝洱两合公司 Power supply system for a motor vehicle
CN101551175A (en) * 2008-04-04 2009-10-07 通用汽车环球科技运作公司 Vehicle hvac and battery thermal management
CN101907332A (en) * 2009-06-03 2010-12-08 通用汽车环球科技运作公司 Water cooled condenser in the vehicle HVAC system
CN203460658U (en) * 2013-07-15 2014-03-05 上海加冷松芝汽车空调股份有限公司 Heat management system for pure electric vehicles
CN103625242A (en) * 2013-11-18 2014-03-12 华南理工大学 Thermal management system of electric automobile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101410577A (en) * 2003-02-18 2009-04-15 贝洱两合公司 Power supply system for a motor vehicle
US6964178B2 (en) * 2004-02-27 2005-11-15 Denso Corporation Air conditioning system for vehicle
CN101551175A (en) * 2008-04-04 2009-10-07 通用汽车环球科技运作公司 Vehicle hvac and battery thermal management
CN101279580A (en) * 2008-05-30 2008-10-08 清华大学 Residual heat pump air conditioner system for fuel-cell vehicle
CN101907332A (en) * 2009-06-03 2010-12-08 通用汽车环球科技运作公司 Water cooled condenser in the vehicle HVAC system
CN203460658U (en) * 2013-07-15 2014-03-05 上海加冷松芝汽车空调股份有限公司 Heat management system for pure electric vehicles
CN103625242A (en) * 2013-11-18 2014-03-12 华南理工大学 Thermal management system of electric automobile

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