CN107351621B - Automotive thermal tube manages system and electric car - Google Patents

Automotive thermal tube manages system and electric car Download PDF

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Publication number
CN107351621B
CN107351621B CN201610305552.2A CN201610305552A CN107351621B CN 107351621 B CN107351621 B CN 107351621B CN 201610305552 A CN201610305552 A CN 201610305552A CN 107351621 B CN107351621 B CN 107351621B
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China
Prior art keywords
branch
heat exchanger
outlet
valve
switch valve
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CN201610305552.2A
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Chinese (zh)
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CN107351621A (en
Inventor
熊建军
陈雪峰
叶梅娇
黄健
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BYD Co Ltd
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BYD Co Ltd
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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
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
    • B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
    • 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
    • B60H2001/00307—Component temperature regulation using a liquid flow

Abstract

The invention discloses a kind of automotive thermal tube reason system and electric cars.It includes heat pump air conditioning system that automotive thermal tube, which manages system, battery pack heat-exchange system and the first plate heat exchanger, heat pump air conditioning system includes indoor condenser, indoor evaporator, compressor and outdoor heat exchanger, the refrigerant inlet of first plate heat exchanger cools down branch and outdoor heat exchanger outlet via the battery of selective on or off, or it is connected to the first end of the first end of the first branch of selective on or off and the second branch of selective on or off, the refrigerant outlet of first plate heat exchanger is connected to via battery cooling for reflux branch with suction port of compressor, first plate heat exchanger is connected in the battery coolant circuit of battery pack heat-exchange system simultaneously.By making coolant liquid cool down first with refrigerant, coolant liquid is recycled to cool down battery, so that battery works within the scope of suitable temperature at summer, to improve the efficiency for charge-discharge of battery, cruising ability and service life.

Description

Automotive thermal tube manages system and electric car
Technical field
The present invention relates to the field of air conditioning of electric car, and in particular, to a kind of automotive thermal tube reason system and including the vapour The electric car of vehicle heat management system.
Background technique
Guarantee that the battery efficiency of electric car is high, need suitable operating temperature, excessively high or height all can It makes a big impact to its performance and cruising ability.China Patent Publication No. is that the utility model of CN205039220U discloses A kind of automobile power cell cooling system.Although the power battery cooling system can pass through evaporator to power electric in refrigeration Pond is cooled down, and power battery is close together with evaporator and exchanges heat, although feasible in principle, but reality is difficult on vehicle It is existing, because evaporator, generally all in air conditioning box body, cabinet space is limited, and the power battery of pure electric automobile is very big, generally It is placed in vehicle bottom.
Summary of the invention
The object of the present invention is to provide a kind of automotive thermal tube reason system and electric cars, to solve the above problems.
To achieve the goals above, according to the first aspect of the invention, a kind of automotive thermal tube reason system is provided, wherein institute Stating automotive thermal tube reason system includes heat pump air conditioning system, battery pack heat-exchange system and the first plate heat exchanger, the heat pump air conditioner System includes that indoor condenser, indoor evaporator, compressor and outdoor heat exchanger, the outlet of the compressor and the interior are cold The entrance of condenser is connected to, the egress selection of the interior condenser via first throttle branch or the first through-flow branch and institute State the entrance connection of outdoor heat exchanger, the egress selection of the outdoor heat exchanger via the second throttling branch or second through-flow Branch be connected to the first end of the first branch of selective on or off and with the second branch of selective on or off First end connection, the second end of the first branch is connected to the entrance of the compressor, the second end of the second branch and The entrance of the indoor evaporator is connected to, and the outlet of the indoor evaporator is connected to the entrance of the compressor, and described first The refrigerant inlet of plate heat exchanger is via the cooling branch of battery of selective on or off and going out for the outdoor heat exchanger Mouthful connection, or described second with the first end of the first branch of selective on or off and selective on or off The first end of branch is connected to, and the refrigerant outlet of first plate heat exchanger is via battery cooling for reflux branch and the compression The entrance of machine is connected to, and first plate heat exchanger is connected on the battery coolant circuit of the battery pack heat-exchange system simultaneously In.
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 refrigerant inlet of first plate heat exchanger cools down branch via the battery of selective on or off The outlet on road and the outdoor heat exchanger, and the first expansion valve is provided on the cooling branch road of the battery.
Optionally, the refrigerant inlet of first plate heat exchanger cools down branch via the battery of selective on or off The second branch of the first end and selective on or off of the first branch of road and selective on or off First end connection, and flow valve is provided on the cooling branch road of the battery.
Optionally, second one-way valve is provided on the battery cooling for reflux branch road.
Optionally, it is additionally provided in the coolant circuit of the battery pack heat-exchange system and the first plate heat exchanger string First ptc heater of connection.
Optionally, it is additionally provided in the coolant circuit of the battery pack heat-exchange system and the first plate heat exchanger string The first water pump, deputy tank and the battery pack of connection.
Optionally, the described first through-flow branch road is provided with third 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 4th switch valve, and the second throttling branch road is provided with the Three expansion valves.
Optionally, the automotive thermal tube reason system is applied to electric car, and the automotive thermal tube reason system further includes motor Cooling system；The heat pump air conditioning system further include: the second plate heat exchanger, wherein the second plate heat exchanger setting exists In the second through-flow branch, and second plate heat exchanger is arranged in the electromotor cooling system simultaneously.
Optionally, the outlet of the refrigerant inlet of second plate heat exchanger and the outdoor heat exchanger, it is described The refrigerant outlet of second plate heat exchanger is connected to the entrance of the 4th switch valve.
Optionally, the electromotor cooling system include connect with second plate heat exchanger be formed into a loop motor, Motor radiator and the second 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 automotive thermal tube reason system is applied to electric car, and the automotive thermal tube reason system further includes motor Cooling system；The heat pump air conditioning system further include: the second plate heat exchanger, wherein the refrigeration of second plate heat exchanger The outlet of agent entrance and the second expansion switch valve, the refrigerant outlet of second plate heat exchanger and the selection Property on or off the first branch first end connection and first end with the second branch of the selective on or off Connection, and second plate heat exchanger is arranged in the electromotor cooling system simultaneously.
Optionally, the electromotor cooling system includes motor coolant liquid main line, first motor coolant liquid branch and the second electricity Machine coolant liquid branch, the first end on motor coolant liquid main line selectively with the first motor coolant liquid branch first The connection of the first end of end or the second motor coolant liquid branch, the second end of the first motor coolant liquid branch and described the The second end of two motor coolant liquid branches is connected to the second end on motor coolant liquid main line, wherein cooling in the motor It is in series with motor, motor radiator and the second water pump on liquid main line, is in series on the first motor coolant liquid branch road described Second 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, the outlet of the entrance of the gas-liquid separator and the indoor evaporator and with the first branch Second end connection, the refrigerant outlet of first plate heat exchanger is via the battery cooling for reflux branch and the gas-liquid The entrance of separator is connected to.
Optionally, the heat pump air conditioning system further includes the second ptc heater, which is used for flowing through The wind of the interior condenser is heated.
Optionally, second ptc heater is arranged in the windward side or leeward side of the indoor condenser.
According to the second aspect of the invention, a kind of electric car is provided, including above-described automotive thermal tube manages system.
Sky can be realized in the case where not changing refrigerant circulation direction in automotive thermal tube reason system provided by the invention Adjust the refrigeration and heat-production functions of heat pump system.In addition, cold by the cooling branch of battery, the first plate heat exchanger and battery due to increasing But that reflux branch collectively constitutes and that indoor evaporator is in parallel for the refrigerant diverter branch cooling to battery, it can keep away Exempt from battery to be directly arranged in indoor evaporator, is conducive to arrangement.In addition, automotive thermal tube reason system can be followed by cell water Loop system makes coolant liquid cool down first with refrigerant, recycles coolant liquid to cool down battery, so that battery is in summer When work within the scope of suitable temperature, to improve the efficiency for charge-discharge of battery, cruising ability and service life.
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 a kind of structural schematic diagram of the automotive thermal tube reason system of embodiment according to the present invention；
Fig. 8 is the structural schematic diagram of the automotive thermal tube reason system of another embodiment according to the present invention；
Fig. 9 is the overlooking structure diagram 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. 9 middle line AB-AB, wherein the first valve port and the second valve port are equal It is in the open state；
Figure 11 is the positive structure diagram along a visual angle for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 12 is the schematic diagram of the section structure crossed by Fig. 9 middle line AB-AB, wherein the first valve port is in the open state, Second valve port is in closed state；
Figure 13 is the schematic diagram of the section structure crossed by Fig. 9 middle line AB-AB, wherein the first valve port is in closed state, Second valve port is in the open state；
Figure 14 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 15 is the schematic diagram of the section structure crossed by Figure 14 middle line AC-AC, wherein the first valve port is in open shape State, the second valve port are in closed state；
Figure 16 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 17 is the partial enlarged view in the portion A in Figure 16；
Figure 18 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 19 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 addition, 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.Wherein, HVAC assembly 600 may include indoor cold Condenser 601 and indoor evaporator 602.
In addition, as shown in Figure 1A, the outlet of compressor 604 is connected to the entrance of indoor condenser 601, indoor condenser It is connected to via first throttle branch or the first through-flow branch with the entrance of outdoor heat exchanger 605 to 601 egress selection, it is outdoor The egress selection of heat exchanger 605 via the first of the second throttling branch or the second through-flow branch and selective on or off The first end of branch 620 is connected to and is connected to the first end of the second branch of selective on or off 621, the first branch 620 Second end be connected to the entrance of compressor 604, the second end of second branch 621 is connected to the entrance of indoor evaporator 602, room The outlet of interior evaporator 602 is connected to the entrance of compressor 604.
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 644, outdoor The egress selection of heat exchanger 605 via second throttling branch or the second through-flow branch and the first triple valve 644 entrance 644a connection, the first outlet 644b of the first triple valve 644 are connected to the first end of the first branch 620, the first triple valve 644 Second outlet 644c is connected to the first end of second branch 621.In this way, can control first by first triple valve 644 620 on or off of road, and control 621 on or off of second branch.
Illustratively, by controlling entrance 644a- first outlet 644b conducting and the entrance 644a- the of the first triple valve 644 Two outlet 644c 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 644a- first outlet 644b of port valve 644 is not turned on and entrance 644a- second outlet 644c 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 third switch valve 608 and second expansion valve 607, wherein the first through-flow branch road is provided with third switch valve 608, and first throttle branch road is arranged There is the second expansion valve 607.Specifically, as shown in Fig. 2, the outlet of indoor condenser 601 is changed via third switch valve 608 with outdoor The entrance of hot device 605 is connected to form the first through-flow branch, and the outlet of indoor condenser 601 is via the second expansion valve 607 and room The entrance of external heat exchanger 605 is connected to form first throttle branch.When system is under high-temperature refrigeration mode, third switch valve 608 conductings, the second expansion valve 607 are closed, and the outlet of indoor condenser 601 is via the first through-flow branch and outdoor heat exchanger 605 Entrance connection.When system is under low temperature heating mode, the second expansion valve 607 conducting, third switch valve 608 is closed, room The outlet of inner condenser 601 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 FIG. 1A and 1B, heat pump air conditioning system can also include the second expansion switch Valve 606, the entrance of the second expansion switch valve 606 and the outlet of outdoor heat exchanger 605, the second expansion switch valve 606 Outlet be connected to the first end of the first branch 620 of selectivity on or off and second with selective on or off The first end on road 621 is connected to, wherein the second throttling branch is the throttling runner of the second expansion switch valve 606, the second through-flow branch For the through-flow runner of the second expansion switch valve 606.
Embodiment alternatively, as shown in figure 3, the heat pump air conditioning system can also include the 4th switch valve 610 and third expansion valve 609, wherein the second through-flow branch road is provided with the 4th 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 4th switch valve 610 and selectivity The first end of the first branch 620 of on or off is connected to and the with the second branch 621 of the selective on or off One end connection to form the second through-flow branch, the outlet of outdoor heat exchanger 605 via third expansion valve 609 and selectivity conducting or The first end of the first branch 620 of cut-off is connected to and connects with the first end of the second branch 621 of the selective on or off It passes to form the second throttling branch.When system is under high-temperature refrigeration mode, third expansion valve 609 is connected, the 4th switch valve 610 close, and the outlet of outdoor heat exchanger 605 is connected to via the second throttling branch with the first end of the second branch 621 of conducting, with The first end of the first branch 620 of cut-off is connected to.When system is under low temperature heating mode, the conducting of the 4th switch valve 610, the Three expansion valves 609 are closed, and the outlet of outdoor heat exchanger 605 is via the first of the second through-flow branch and the second branch 621 of cut-off End connection, the first end with the first branch 620 of conducting.
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.
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, and gas-liquid separator 611 goes out Mouth is connected to the entrance of compressor 604.In this way, the refrigerant flowed out through the second end of indoor evaporator 602 or the first branch 620 Gas-liquid separator 611 can be first passed around and carry out gas-liquid separation, the gas isolated is flowed back into again in compressor 604, thus anti- Only liquid refrigerant enters compressor 604 and damages compressor 604, so as to extend the service life of compressor 604, and Improve the efficiency of entire heat pump air conditioning system.
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 The second plate heat exchanger 612 is provided in air-conditioning system, which is also disposed in electric car simultaneously In electromotor cooling system.In this way, the waste heat that can use electromotor cooling system gives air-conditioning system refrigerant heat, to can be improved The suction temperature and inspiratory capacity of compressor 604.
For example, as shown in Figure 5A, using the implementation of third expansion valve 609 and the 4th switch valve 610 in heat pump air conditioning system In mode, the second plate heat exchanger 612 can be arranged in as shown in Figure 5A in the second through-flow branch.For example, in a kind of embodiment party In formula, the refrigerant inlet 612a of the second plate heat exchanger 612 and the outlet of outdoor heat exchanger 605, the second plate-type heat-exchange The refrigerant outlet 612b of device 612 is connected to the entrance of the 4th switch valve 610.Alternatively, (not showing in another embodiment Out), the refrigerant inlet 612a of the second plate heat exchanger 612 can also be board-like with the outlet of the 4th switch valve 610, second The refrigerant outlet 612b of heat exchanger 612 be connected to the first end of the first branch 620 of selective on or off and with it is described The first end of the second branch 621 of selective on or off is connected to.
At the same time, the second plate heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in Figure 5A, motor is cold But system may include the motor, motor radiator 613 and the second water pump connected with the second plate heat exchanger 612 to be formed into a loop 614.In this way, refrigerant can carry out heat exchange with the coolant liquid in electromotor cooling system by the second plate heat exchanger 612.System Cryogen returns in compressor 604 after the 4th switch valve 610 and first switch valve 622.
Alternatively, as shown in Figure 5 B, in embodiment of the heat pump air conditioning system using the second expansion switch valve 606, second The outlet of the expansion switch valve 606 of the refrigerant inlet 612a of plate heat exchanger 612 and second, the second plate heat exchanger 612 Refrigerant outlet 612b be connected to the first end of the first branch 620 of selective on or off and with the selectivity conducting Or the first end connection of the second branch 621 of cut-off, and the motor of electric car is arranged in the second plate heat exchanger 612 simultaneously In cooling system.In this way, refrigerant can carry out heat with the coolant liquid in electromotor cooling system by the second plate heat exchanger 612 Exchange.Refrigerant returns in compressor 604 after first switch valve 622.
By the second 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 from the heating for carrying out refrigerant under high-temperature refrigeration mode, can be controlled whether using valve in the second plate heat exchanger 612 Middle carry out heat exchange.Specifically, electromotor cooling system may include coolant liquid main line 616, the first coolant liquid branch 617 and second Coolant liquid branch 618, wherein the first end on coolant liquid main line 616 selectively with the first end of the first coolant liquid branch 617 or The first end of second coolant liquid branch 618 is connected to.For example, in one embodiment, the first end on coolant liquid main line 616 can be with It is connected to the import 615a of the second triple valve 615, the first end of the first coolant liquid branch 617 can be with the second triple valve 615 First outlet 615b connection, the first end of the second coolant liquid branch 618 can connect with the second outlet 615c of the second triple valve 615 It is logical, 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 The first end of branch 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 the second water are in series on coolant liquid main line 616 Pump 614, is in series with the second plate heat exchanger 612 on the first coolant liquid branch 617.
In this way, at this time in order to improve heating ability, being needed second when air-conditioning system work is under low temperature heating mode Refrigerant is heated in plate heat exchanger 612.Therefore, in such a case, it is possible to be made by controlling the second triple valve 615 The conducting of the first coolant liquid branch 617 is obtained, the coolant liquid in electromotor cooling system flows through the second plate heat exchanger 612 as a result, this When, the heat exchange with refrigerant may be implemented.However, not needed at this time when system work is under high-temperature refrigeration mode the Refrigerant is heated in double-plate heat exchanger 612.Therefore, in such a case, it is possible to pass through the second triple valve 615 of control So that the second coolant liquid branch 618 is connected, the coolant liquid in electromotor cooling system is not passed through the second plate heat exchanger 612 as a result, The runner of second plate heat exchanger 612 as just refrigerant 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 the second ptc heater 619, which is used for flowing through indoor condenser 601 wind is heated.
In the present invention, the second ptc heater 619 can be high pressure PTC (being driven by vehicle high-tension battery), voltage model It encloses: 200V-900V.Alternatively, the second ptc heater 619 or low pressure PTC (driving of 12V or 24V battery), voltage model It encloses: 9V-32V.In addition, this second ptc heater 619 can be by several or several pieces of PTC ceramics piece modules and radiating fin group At a complete 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. Also, in order to improve the heating effect to the wind for flowing through indoor condenser 601, which can be cold with interior Condenser 601 is arranged in parallel.In other embodiments, which can also be arranged in HVAC assembly 600 Blowing at foot air port and defrosting outlet for cabinet, can also be arranged at the air port of defrosting duct.
If the second ptc heater 619 to be arranged in the windward side or leeward side of cabinet interior room inner condenser 601, with room Inner condenser 601 be arranged in parallel, can the grooving on cabinet shell, the second ptc heater 619, which is inserted perpendicularly into, puts cabinet into, can also With welding support on 601 side plate of condenser indoors, the second ptc heater 619 is fixed by screws in indoor condenser 601 On bracket.If the second ptc heater 619 is arranged in the blowing at foot air port and defrosting outlet of cabinet, or it is arranged in defrosting wind At the air port in road, it can be directly anchored to by screw 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, The 619 auxiliary heating heating of the second ptc heater can be run, it is possible thereby to heating capacity when eliminating heat pump air conditioning system low-temperature heating It is small, the defects of vehicle defrosting-defogging is slow, and heating effect is bad.
Fig. 7 is a kind of structural schematic diagram of the automotive thermal tube reason system of embodiment according to the present invention.As shown in fig. 7, The system may include heat pump air conditioning system described above, battery pack heat-exchange system and the first plate heat exchanger 637, In, the refrigerant inlet of the first plate heat exchanger 637 cools down branch and outdoor heat exchange via the battery of selective on or off The outlet of device 605, or with the first end of the first branch 620 of selective on or off and selective on or off The first end of second branch 621 is connected to, and the refrigerant outlet of the first plate heat exchanger 637 is via battery cooling for reflux branch and pressure The entrance of contracting machine 604 is connected to, and the first plate heat exchanger 637 is connected on the battery coolant circuit of battery pack heat-exchange system simultaneously In.
That is, being by increasing by battery cooling branch, the first plate heat exchanger as main inventive concept of the invention 637 and battery cooling for reflux branch collectively constitutes and indoor evaporator 602 is in parallel for the refrigerant cooling to battery Diverter branch, in this way, when system high-temperature refrigeration be powered on pond refrigerating mode under when, refrigerant is segmented into two strands: wherein one Refrigerant flow direction indoor evaporator 602, and evaporated in evaporator 602 indoors, indoor environment heat is absorbed, Indoor Temperature is reduced Degree；Another strand of the first plate heat exchanger of refrigerant flow direction 637, and pass through the first plate heat exchanger 637 and battery pack heat-exchange system Battery coolant circuit in coolant liquid exchange heat, absorb the heat of coolant liquid, and then may be implemented to the cold of battery pack But.
In the present invention, there are two types of modes for the connection type of the refrigerant inlet of the first plate heat exchanger 637: in a kind of reality It applies in mode, as shown in fig. 7, the refrigerant inlet of the first plate heat exchanger 637 can be via the electricity of selective on or off The outlet of pond cooling branch and outdoor heat exchanger 605.Specifically, the first expansion valve can be set on the cooling branch road of battery 638.In this way, can be according to actual needs by opening or closing the first expansion valve 638 to control whether refrigerant can flow into To the refrigerant inlet of the first plate heat exchanger 637.That is, the cooling branch of control battery be it is in the conductive state, be in and cut Only state.
In this embodiment, in the case where high-temperature refrigeration is powered on pond refrigerating mode, from the medium temperature of outdoor heat exchanger 605 out The refrigerant of high pressure is directly divided into two strands: one flows to the second expansion switch valve 606；Another plume is to the first expansion valve 638.It changes Yan Zhi, refrigerant is to carry out reducing pressure by regulating flow respectively on every road Tiao Zhi again after shunting at this time.
In another embodiment, as shown in figure 8, the refrigerant inlet of the first plate heat exchanger 637 is via selectivity The cooling branch of the battery of on or off be connected to the first end of the first branch 620 of selectivity on or off and with selectivity The first end of the second branch 621 of on or off is connected to, and is provided with flow valve 627 on the cooling branch road of battery.Specifically In embodiment shown in Fig. 8, the outlet of outdoor heat exchanger 605 via the second expansion switch valve 606 and selectivity conducting or The first end of the first branch 620 of cut-off is connected to, and is connected with the first end of the second branch 621 of the selective on or off It is logical, and be connected to via the cooling branch of battery of selective on or off with the refrigerant inlet of the first plate heat exchanger 637.
In this way, can be by control flow valve 627 to control whether refrigerant can flow into the first plate heat exchanger 637 Refrigerant inlet, that is, the cooling branch of control battery be it is in the conductive state, be in off state.In addition, control flow Valve 627 can also regulate and control the size that refrigerant flows into the flow of the first plate heat exchanger 637.
In this embodiment, in the case where high-temperature refrigeration is powered on pond refrigerating mode, from the medium temperature of outdoor heat exchanger 605 out The refrigerant of high pressure is divided into two strands after the throttling of the second expansion switch valve 606: one flows to second switch valve 623, at this point, First switch valve 622 is closed, and another plume is to flow valve 627, to realize the distribution of the flow proportional of two strands of refrigerants.Change speech It, at this point, refrigerant is first to carry out reducing pressure by regulating flow on main line then to be shunted again.
In order to prevent under low temperature heating mode, the refrigerant of low-temp low-pressure is back in the first plate heat exchanger 637, such as Shown in Fig. 7 and Fig. 8, second one-way valve 628 is provided on battery cooling for reflux branch road.That is, second one-way valve 628 can only be unidirectional Ground permission refrigerant flows to the entrance of compressor 604 from the refrigerant outlet of the first plate heat exchanger 637, and cannot be to Xiang Fanfang To flowing.
When first check valve 624 mentioned hereinabove can also prevent from only cooling down battery pack 640, low-temp low-pressure Refrigerant be back in indoor evaporator 602, that is, the first check valve 624 can only uniaxially allow refrigerant from indoor evaporation The outlet of device 602 flows to the entrance of compressor 604, and cannot flow round about.
For convenient for when winter temperature is lower, the heating of battery pack 640 is heated in realization, the cooling of battery pack heat-exchange system It is additionally provided in liquid circuit and concatenated first ptc heater 641 of the first plate heat exchanger 637.
Specifically, it is additionally provided in the coolant circuit of battery pack heat-exchange system concatenated with the first plate heat exchanger 637 First water pump 642, deputy tank 625 and battery pack 640.
For example, in one embodiment, the cooling liquid outlet of battery pack 640 and the coolant inlet of deputy tank 625 connect Logical, the cooling liquid outlet of deputy tank 625 is connected to the coolant inlet of the first water pump 642, the cooling liquid outlet of the first water pump 642 It is connected to the coolant inlet of the first plate heat exchanger 637, cooling liquid outlet and the first PTC of the first plate heat exchanger 637 add The coolant inlet of hot device 641 is connected to, and the cooling liquid outlet of the first ptc heater 641 and the coolant inlet of battery pack 640 connect It is logical, battery pack cooling/heating circulation is consequently formed.
As described above, to prevent liquid refrigerant from entering compressor 604 and damaging compressor 604, so as to extend The service life of compressor 604, and the efficiency of entire heat pump air conditioning system is improved, provided with gas-liquid point in heat pump air conditioning system From device 611.As shown in Figure 7 and Figure 8, the entrance of gas-liquid separator 611 is in addition to the outlet and the first branch with indoor evaporator 602 Except 620 second end connection, the refrigerant outlet of the first plate heat exchanger 637 is also via battery cooling for reflux branch and gas-liquid The entrance of separator 611 is connected to.In other words, gas-liquid can also be first passed around from the refrigerant that the first plate heat exchanger 637 comes out Separator 611 carries out gas-liquid separation, and the gas isolated is flowed back into again in compressor 604, to prevent liquid refrigerant from entering Compressor 604 is damaged to compressor 604.
It will carry out the automotive thermal tube that the present invention is described in detail provides by taking Fig. 7 as an example below and manage system under different working modes Cyclic process and principle.It should be understood that the system under other embodiments (for example, embodiment shown in Fig. 8) is followed Ring process and principle with Fig. 7 be it is similar, just no longer repeat one by one herein.
Mode one: high-temperature refrigeration mode.System be in system in this mode when, whole system formed a height Warm cooling cycle system.As shown in fig. 7, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with indoor condensation Device 601 is connected.At this point, control wind is without indoor condenser 601, due to calm process, indoors in condenser 601 It not will do it heat exchange, which only uses as runner, and the indoor outlet of condenser 601 is still high for high temperature at this time The gas of pressure.The indoor outlet of condenser 601 is connected with the first expansion switch valve 603, and the first expansion switch valve 603 plays switch at this time Valve action is only flowed through as runner, and the first expansion switch valve 603 outlet at this time is still the gas of high temperature and pressure.First expands It closes the outlet of valve 603 to be connected with outdoor heat exchanger 605, outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into air In, the outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 and the second expansion 606 phase of switch valve Even, the second expansion switch valve 606 plays expansion valve action at this time, plays throttling action as restricting element, outlet is that low temperature is low Press liquid.Second expansion 606 aperture of switch valve can give certain aperture according to actual needs, this aperture can be according to installation The pressure and temperature of pressure-temperature sensor between the outlet of indoor evaporator 602 and the entrance of gas-liquid separator 611 is adopted Collection data calculate indoor evaporator 602 and export refrigerant superheat degree to adjust.First switch valve 622 is closed, second switch valve 623 It opens, in this way, the first branch 620 is ended, second branch 621 is connected.The low-temp low-pressure liquid come out from the second expansion switch valve 606 Body enters the room to be evaporated in evaporator 602, so that the outlet of indoor evaporator 602 is the gas of low-temp low-pressure.Indoor evaporation Device 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is separated by gas-liquid separator 611, last low-temp low-pressure Gas returns in compressor 604, and a circulation is consequently formed.The flow direction of 600 apoplexy of HVAC assembly flows only through indoor evaporation at this time Device 602, the calm process of indoor condenser 601, only flows through as refrigerant flow path, and the first ptc heater 641, which is in, closes shape State, the first expansion valve 638 are closed.
Mode two: battery refrigerating mode.System in this mode when, battery pack heat-exchange system formed a battery pack Cooling recirculation system.As shown in fig. 7, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with indoor condenser 601 are connected.At this point, control wind is without indoor condenser 601, due to calm process, indoors in condenser 601 not It will do it heat exchange, which only uses as runner, and the indoor outlet of condenser 601 is still high temperature and pressure at this time Gas.The indoor outlet of condenser 601 is connected with the first expansion switch valve 603, and the first expansion switch valve 603 plays switch valve at this time Effect, only flows through as runner, and the first expansion switch valve 603 outlet at this time is still the gas of high temperature and pressure.First expansion switch The outlet of valve 603 is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into air, The outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 is connected with the first expansion valve 638, by the The throttling of one expansion valve 638 cools down, and the outlet of the first expansion valve 638 is low temperature and low pressure liquid.First expansion valve, 638 aperture can be with Certain aperture is given according to actual needs, this aperture can be according to the refrigerant outlet for being mounted on the first plate heat exchanger 637 The pressure and temperature of pressure-temperature sensor between the entrance of gas-liquid separator 611 acquires data to adjust.First expansion The outlet of valve 638 is connected with the refrigerant inlet of the first plate heat exchanger 637, and low temperature and low pressure liquid is in the first plate heat exchanger 637 It is interior to carry out heat exchange with hot water that is coming out from battery pack 640, so that the refrigerant outlet of the first plate heat exchanger 637 is that low temperature is low The gas of pressure.The refrigerant outlet of first plate heat exchanger 637 is connected with gas-liquid separator 611, and the liquid not being evaporated is led to The separation of gas-liquid separator 611 is crossed, the gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.At this time In HVAC assembly 600, the calm process of indoor condenser 601 is only flowed through as refrigerant flow path, and the first ptc heater 641 is in Closed state, the second expansion switch valve 606 are closed.
Mode three: high-temperature refrigeration is powered on pond cooling cycle mode.When in this mode, whole system forms a high temperature system Cold while battery cooling recirculation system.As shown in fig. 7, firstly, compressor 604 through overcompression discharge high temperature and pressure gas, with Indoor condenser 601 is connected.At this point, control wind is without indoor condenser 601, due to calm process, condense indoors It not will do it heat exchange in device 601, which only uses as runner, and the indoor outlet of condenser 601 at this time is still The gas of high temperature and pressure.The indoor outlet of condenser 601 is connected with the first expansion switch valve 603, at this time the first expansion switch valve 603 Switch valve action is played, is only flowed through as runner, the first expansion switch valve 603 outlet at this time is still the gas of high temperature and pressure.First The outlet of expansion switch valve 603 is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into In air, the outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 is switched with the second expansion respectively Valve 606 is connected with the first expansion valve 638, at this point, the liquid of the medium temperature high pressure come out from outdoor heat exchanger 605 is divided into two strands: one Plume to second expansion switch valve 606 entrance, at this point, second expansion switch valve 606 rise expansion valve action it is identical, as throttling Element plays throttling action, and outlet is low temperature and low pressure liquid.The aperture of second expansion switch valve 606 can be according to actual needs Give certain aperture, this aperture can according to be mounted on indoor evaporator 602 outlet and gas-liquid separator 611 entrance it Between the pressure and temperature acquisition data of pressure-temperature sensor calculate indoor evaporator 602 and export refrigerant superheat degree and adjust Section.First switch valve 622 is closed, and second switch valve 623 is opened, in this way, the first branch 620 is ended, second branch 621 is connected. The low temperature and low pressure liquid come out from the second expansion switch valve 606, which enters the room in evaporator 602, to be evaporated, so that indoor evaporation The outlet of device 602 is the gas of low-temp low-pressure.For another plume to the entrance of the first expansion valve 638, the aperture of the first expansion valve 638 can To give certain aperture according to actual needs, this aperture can be according to the refrigerant outlet and gas of the first plate heat exchanger 637 The pressure and temperature of pressure-temperature sensor between the entrance of liquid/gas separator 611 acquires data to adjust.By the first expansion The reducing pressure by regulating flow of valve 638, the outlet of the first expansion valve 638 are low temperature and low pressure liquid.First expansion valve 638 exports and first is board-like The refrigerant inlet of heat exchanger 637 is connected, and low temperature and low pressure liquid comes out in the first plate heat exchanger 637 with from battery pack 640 Hot water carry out heat exchange so that the refrigerant outlet of the first plate heat exchanger 637 be low-temp low-pressure gas.Indoor evaporator 602 outlet and the refrigerant outlet of the first plate heat exchanger 637 are connected with gas-liquid separator 611 respectively, board-like change from first The refrigerant that the refrigerant outlet of hot device 637 comes out converges with the refrigerant of the outlet from indoor evaporator 602 out, not steaming The liquid distributed is separated by gas-liquid separator 611, and the gas of last low-temp low-pressure returns in compressor 604, is consequently formed one A circulation.The flow direction of 600 apoplexy of HVAC assembly flows only through indoor evaporator 602 at this time, the calm process of indoor condenser 601, only It is flowed through as refrigerant flow path, the first ptc heater 641 is in close state, the second expansion switch valve 606 and the first expansion valve 638 are in opening state.
Mode four: low temperature heating mode.System in this mode when, whole system forms low temperature heating circulation System.As shown in fig. 7, 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 The number of the temperature acquisition data (i.e. compressor exhaust temperature) of temperature sensor is adjusted.First expansion switch valve 603 exports It is connected with outdoor heat exchanger 605, outdoor heat exchanger 605 absorbs the heat of outdoor air, and the outlet of outdoor heat exchanger 605 is that low temperature is low The gas of pressure.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 at this time The effect of valve is only flowed 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.At this point, the first ptc heater 641 is closed, the first expansion valve 638 is closed.
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.
Mode five: battery-heated model.System in this mode when, battery pack heat-exchange system formed a battery pack Heating circulation system.First ptc heater 641 is opened, and the coolant liquid in battery pack water circulation system, the first water pump 642 are heated So that the coolant liquid circulation after heating is got up, into battery pack 640 to heat to battery, a circulation is thus completed.Wherein, One expansion valve 638 is closed, in this way, being located at the second one-way valve 628 and the first expansion valve 638 at 637 both ends of the first plate heat exchanger So that battery pack heat-exchange system is independently of heat pump air conditioning system, in this way, the work of battery pack heat-exchange system and heat pump air conditioning system Process will not be generated and be influenced each other, at this point, heat pump air conditioning system stops working.
To sum up, automotive thermal tube provided by the invention manages system, in the case where not changing refrigerant circulation direction, Ji Keshi The refrigeration and heat-production functions of existing air conditioner heat pump system.In addition, due to increasing by the cooling branch of battery, the first plate heat exchanger and electricity It is that pond cooling for reflux branch collectively constitutes and that indoor evaporator is in parallel for the refrigerant diverter branch to battery cooling, it can It is directly arranged in indoor evaporator to avoid battery, is conducive to arrangement.In addition, automotive thermal tube reason system can not only pass through Battery water circulation system makes coolant liquid cool down first with refrigerant, recycles coolant liquid to cool down battery, and in electricity The first ptc heater is added in the water circulatory system, the heating to battery is realized by heated cooling fluid, so that battery is always It works within the scope of suitable temperature, to improve the efficiency for charge-discharge of battery, cruising ability and service life.
As described above, in the present invention, expansion switch valve is the valve simultaneously with expansion valve and switch valve function, It can be regarded as being the integrated of switch valve and expansion valve.It will be provided below a kind of example embodiment party for expanding switch valve Formula.
As shown in figure 9, 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. 9 to Figure 14, 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 Fig. 9 to Figure 12, 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 13, 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 16 to Figure 19, import 501 and 502 phases of outlet Mutually vertically it is provided on valve body 500.In this way, as shown in Figure 16 to Figure 18, 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 12 and Figure 13, 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 15, 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 12 and Figure 13, 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 12, 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 13 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 12, Figure 15 and Figure 18, 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 12 and Figure 18 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 13 and Figure 19, 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 13 and Figure 19, 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 Figure 10, Tu16He Shown in Figure 17, 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 Mouth 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 To export 502 along first runner 506 and the flow direction of second flow channel 507 respectively, to have the function of solenoid valve and electronic expansion simultaneously Valve 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 car, the above-mentioned automotive thermal tube including providing according to the present invention manages system.Wherein, The 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 (21)

1. a kind of automotive thermal tube manages system, which is characterized in that the automotive thermal tube reason system includes heat pump air conditioning system, battery pack Heat-exchange system and the first plate heat exchanger (637), the heat pump air conditioning system include indoor condenser (601), indoor evaporator (602), compressor (604) and outdoor heat exchanger (605), the outlet of the compressor (604) and the indoor condenser (601) Entrance connection, the egress selection of the interior condenser (601) via first throttle branch or the first through-flow branch with The entrance of the outdoor heat exchanger (605) is connected to, and is propped up via the second throttling to the egress selection of the outdoor heat exchanger (605) Road 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, second end and the compressor (604) of the first branch (620) Entrance connection, the second end of the second branch (621) are connected to the entrance of the indoor evaporator (602), the interior steaming The outlet of hair device (602) is connected to the entrance of the compressor (604), and the refrigerant of first plate heat exchanger (637) enters Mouthful via selective on or off battery cooling branch and the outdoor heat exchanger (605) outlet, or with selection Property on or off the first branch (620) first end and selective on or off the second branch (621) First end connection, the refrigerant outlet of first plate heat exchanger (637) is via battery cooling for reflux branch and the pressure The entrance of contracting machine (604) is connected to, and first plate heat exchanger (637) is connected on the battery of the battery pack heat-exchange system simultaneously In coolant circuit, the heat pump air conditioning system further includes the first expansion switch valve (603), first expansion switch valve (603) Entrance and the indoor condenser (601) outlet, outlet of first expansion switch valve (603) is changed with the outdoor The entrance of hot device (605) is connected to, and the first throttle branch is the throttling runner of first expansion switch valve (603), described First through-flow branch is the through-flow runner of first expansion switch valve (603).
2. automotive thermal tube according to claim 1 manages system, which is characterized in that be provided on the first branch (620) First switch valve (622).
3. automotive thermal tube according to claim 1 manages system, which is characterized in that be provided on the second branch (621) Second switch valve (623).
4. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further include: the One triple valve (644), the egress selection of the outdoor heat exchanger (605) via the second throttling branch or the second through-flow branch It is connected to the entrance (644a) of first triple valve (644), the first outlet (644b) of first triple valve (644) and institute State the first end connection of the first branch (620), the second outlet (644c) and the second branch of first triple valve (644) (621) first end connection.
5. automotive thermal tube according to claim 1 manages system, which is characterized in that the outlet of the indoor evaporator (602) It is connected to via the first check valve (624) with the entrance of the compressor (604).
6. automotive thermal tube according to claim 1 manages system, which is characterized in that first plate heat exchanger (637) Refrigerant inlet cools down the outlet of branch and the outdoor heat exchanger (605) via the battery of selective on or off, And the first expansion valve (638) are provided on the cooling branch road of the battery.
7. automotive thermal tube according to claim 1 manages system, which is characterized in that first plate heat exchanger (637) Refrigerant inlet is via the battery cooling branch of selective on or off and the first branch of selective on or off (620) the first end connection of the second branch (621) of first end and selective on or off, and in the battery Cooling branch road is provided with flow valve (627).
8. automotive thermal tube according to claim 1 manages system, which is characterized in that in the battery cooling for reflux branch Lu Shangshe It is equipped with second one-way valve (628).
9. automotive thermal tube according to claim 1 manages system, which is characterized in that the coolant liquid of the battery pack heat-exchange system It is additionally provided in circuit and concatenated first ptc heater (641) of first plate heat exchanger (637).
10. according to claim 1 or automotive thermal tube described in 9 manage system, which is characterized in that the battery pack heat-exchange system it is cold But be additionally provided in liquid circuit with concatenated first water pump (642) of first plate heat exchanger (637), deputy tank (625) and Battery pack (640).
11. automotive thermal tube according to claim 1 manages system, which is characterized in that the second through-flow branch road is provided with 4th switch valve (610), the second throttling branch road are provided with third expansion valve (609).
12. automotive thermal tube according to claim 11 manages system, which is characterized in that the automotive thermal tube reason system is applied to Electric car, the automotive thermal tube reason system further includes electromotor cooling system；
The heat pump air conditioning system further include: the second plate heat exchanger (612), wherein second plate heat exchanger (612) sets It sets in the described second through-flow branch, and second plate heat exchanger (612) is arranged in the electromotor cooling system simultaneously In.
13. automotive thermal tube according to claim 12 manages system, which is characterized in that second plate heat exchanger (612) Refrigerant inlet (612a) and the outdoor heat exchanger (605) outlet, the system of second plate heat exchanger (612) Cryogen outlet (612b) is connected to the entrance of the 4th switch valve (610).
14. automotive thermal tube according to claim 12 or 13 manages system, which is characterized in that the electromotor cooling system includes It is connected with second plate heat exchanger (612) with the motor, motor radiator (613) and the second water pump (614) being formed into a loop.
15. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further includes the Two expansions switch valve (606), the entrance of second expansion switch valve (606) and the outlet of the outdoor heat exchanger (605), The outlet of second expansion switch valve (606) is connected to the first end of the first branch (620) of the selective on or off And be connected to the first end of the second branch (621) of the selective on or off, the second throttling branch is described the The throttling runner of two expansions switch valve (606), the second through-flow branch are the through-flow stream of second expansion switch valve (606) Road.
16. automotive thermal tube according to claim 15 manages system, which is characterized in that the automotive thermal tube reason system is applied to Electric car, the automotive thermal tube reason system further includes electromotor cooling system；
The heat pump air conditioning system further include: the second plate heat exchanger (612), wherein second plate heat exchanger (612) The outlet of refrigerant inlet and second expansion switch valve (606), the refrigerant of second plate heat exchanger (612) Outlet be connected to the first end of the first branch (620) of the selective on or off and with the selectivity on or off Second branch (621) first end connection, and second plate heat exchanger (612) be arranged simultaneously it is cooling in the motor In system.
17. automotive thermal tube according to claim 16 manages system, which is characterized in that the electromotor cooling system includes motor Coolant liquid main line (616), first motor coolant liquid branch (617) and the second motor coolant liquid branch (618), the motor are cooling The first end on liquid main line (616) selectively with the first end of the first motor coolant liquid branch (617) or it is described second electricity The first end of machine coolant liquid branch (618) is connected to, the second end of the first motor coolant liquid branch (617) and second electricity The second end of machine coolant liquid branch (618) is connected to the second end on motor coolant liquid main line (616), wherein in the electricity Motor, motor radiator (613) and the second water pump (614) are in series on machine coolant liquid main line (616), it is cold in the first motor But second plate heat exchanger (612) is in series on liquid branch (617).
18. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further includes gas The outlet of liquid/gas separator (611), the gas-liquid separator (611) is connected to the entrance of the compressor (604), the gas-liquid point Entrance from device (611) and the outlet of the indoor evaporator (602) and connect with the second end of the first branch (620) Logical, the refrigerant outlet of first plate heat exchanger (637) is via the battery cooling for reflux branch and the gas-liquid separation The entrance of device (611) is connected to.
19. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further includes the Two ptc heaters (619), second ptc heater (619) are used to add the wind for flowing through the indoor condenser (601) Heat.
20. automotive thermal tube according to claim 19 manages system, which is characterized in that the second ptc heater (619) cloth Set the windward side or leeward side in the indoor condenser (601).
21. a kind of electric car, which is characterized in that managed including automotive thermal tube described according to claim 1 any one of -20 System.
CN201610305552.2A 2016-05-10 2016-05-10 Automotive thermal tube manages system and electric car Active CN107351621B (en)

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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
CN107968238A (en) * 2017-12-28 2018-04-27 浙江众泰汽车制造有限公司 A kind of non-vehicle-mounted type battery thermal management system and the automobile using the system
CN109466273A (en) * 2018-10-30 2019-03-15 珠海格力电器股份有限公司 A kind of heat pump air conditioning system and its control method and automobile
CN112140829B (en) * 2019-06-28 2022-03-15 比亚迪股份有限公司 Vehicle thermal management system and vehicle
CN110481266B (en) * 2019-07-29 2020-11-17 中通客车控股股份有限公司 Automobile air conditioner integrated fuel cell thermal management system and control method and device
CN111071072A (en) * 2019-12-31 2020-04-28 潍柴动力股份有限公司 Fuel cell cooling module and fuel cell cooling system
CN112297766B (en) * 2020-10-30 2022-11-29 东风小康汽车有限公司重庆分公司 Heat management system of automobile and automobile

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