CN107351623B

CN107351623B - Automotive thermal tube manages system and electric car

Info

Publication number: CN107351623B
Application number: CN201610305622.4A
Authority: CN
Inventors: 黄健; 叶梅娇; 陈雪峰; 汪孟瑛
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2016-05-10
Filing date: 2016-05-10
Publication date: 2019-11-05
Anticipated expiration: 2036-05-10
Also published as: CN107351623A

Abstract

The invention discloses a kind of automotive thermal tube reason system and electric cars, it includes heat pump air conditioning system that the automotive thermal tube, which manages system, battery pack heat-exchange system, first switch valve and the first plate heat exchanger, the refrigerant inlet of first plate heat exchanger is connected to via the cooling branch of battery of selective on or off with the outlet of outdoor heat exchanger or with the entrance of indoor evaporator, it is connected to via the battery heating branch of selective on or off with the entrance of first switch valve, the refrigerant outlet of first plate heat exchanger is communicated with compressor via the battery cooling for reflux branch of selective on or off, the outlet of branch Yu first switch valve is heated to reflux via battery, first plate heat exchanger is connected in the battery coolant circuit of battery pack heat-exchange system.Make coolant liquid cool down or heat up using refrigerant, to be cooled down or be heated to battery, so that battery works within the scope of suitable temperature always, improves efficiency for charge-discharge, cruising ability and the service life of battery.

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 electric car.

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, first switch valve and the first plate heat exchanger, institute Stating heat pump air conditioning system includes HVAC assembly, compressor and outdoor heat exchanger, and the HVAC assembly includes indoor condenser, interior Evaporator and air door mechanism, the air door mechanism are used to selectively turn on the air duct for leading to the indoor condenser and/or lead to To the air duct of the indoor evaporator, the outlet of the compressor is connected to the entrance of the indoor condenser, and the interior is cold The outlet of condenser is connected to the entrance of the first switch valve, the egress selection of the first switch valve via first throttle Branch or the first through-flow branch are connected to the entrance of the outdoor heat exchanger, the egress selection of the outdoor heat exchanger via Second throttling branch or the second through-flow branch are connected to the entrance of the indoor evaporator, the outlet of the indoor evaporator and institute The entrance connection of compressor is stated, the refrigerant inlet of first plate heat exchanger is cold via the battery of selective on or off But branch is connected to the outlet of the outdoor heat exchanger or with the entrance of the indoor evaporator, and is led via selectivity Logical or cut-off battery heating branch is connected to the entrance of the first switch valve, and the refrigerant of first plate heat exchanger goes out Mouth is connected to via the battery cooling for reflux branch of selective on or off with the entrance of the compressor, and is added via battery The outlet of heat reflux branch and the first switch valve, first plate heat exchanger are connected on the battery simultaneously and guarantee replacement In the battery coolant circuit of hot systems.

Optionally, second switch valve is provided on battery heating branch road.

Optionally, third switch valve is provided on the battery cooling for reflux branch road.

Optionally, the first check valve is additionally provided on the battery cooling for reflux branch road.

Optionally, it is heated to reflux on branch road in the battery and is provided with second one-way valve.

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 automotive thermal tube reason system further includes the 4th switch valve, the egress selection of the outdoor heat exchanger Ground is connected to via the second throttling branch or the second through-flow branch with the entrance of the 4th switch valve, and the described 4th opens The outlet for closing valve is connected to the entrance of the indoor evaporator, and the refrigerant inlet of first plate heat exchanger is via selectivity The cooling branch of the battery of on or off is connected to the entrance of the 4th switch valve, and in the cooling branch Lu Shangshe of the battery It is equipped with flow valve.

Optionally, the outlet of the indoor evaporator is connected to via third check valve with the entrance of the compressor.

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 the 5th 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 6th 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 second plate heat exchanger is arranged in institute It states 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 6th 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 The outlet of the outlet of the outdoor heat exchanger, the second expansion switch valve is connected to the entrance of the indoor evaporator, institute The throttling runner that the second throttling branch is the second expansion switch valve is stated, the second through-flow branch expands for described second Close the through-flow runner of valve.

The heat pump air conditioning system further include: the second plate heat exchanger, wherein the refrigerant of second plate heat exchanger The outlet of entrance and the second expansion switch valve, the refrigerant outlet of second plate heat exchanger and the indoor steaming The entrance connection of device is sent out, 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 described first board-like changes The refrigerant outlet of hot device is connected to via the battery cooling for reflux branch with the entrance of the gas-liquid separator.

Optionally, the HVAC assembly further includes ptc heater, which is used for flowing through the indoor condensation The wind of device is heated.

Optionally, the 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.

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 to be used for the refrigerant diverter branch cooling to battery, with And increase is heated to reflux branch by battery heating branch, the first plate heat exchanger and battery and collectively constitutes with first switch valve phase simultaneously The refrigerant diverter branch for heating to battery of connection, can be directly arranged in indoor evaporator to avoid battery, be conducive to whole Vehicle arrangement.In addition, automotive thermal tube reason system can by battery water circulation system, first with refrigerant make coolant liquid cool down or Heating recycles coolant liquid to be cooled down or heated to battery, so that battery works within the scope of suitable temperature always, from And improve efficiency for charge-discharge, cruising ability and the service life of battery.

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:

Fig. 1 is a kind of structural schematic diagram of the heat pump air conditioning system of 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.

In the present invention, electric car may include pure electric automobile, hybrid vehicle, fuel cell car.

Fig. 1 is a kind of structural schematic diagram of the heat pump air conditioning system of embodiment according to the present invention.As shown in Figure 1, should System may include: HVAC (heating and ventilation and air-conditioning, Heating Ventilation and Air Conditioning) total At 600, compressor 604 and outdoor heat exchanger 605.Wherein, HVAC assembly 600 may include indoor condenser 601, indoor evaporation Device 602 and air door mechanism (not shown), wherein air door mechanism, which can be used for selectively turning on, leads to indoor condenser 601 Air duct and/or the air duct for leading to indoor evaporator 602.

In the present invention, in HVAC assembly, lead to the air duct of indoor condenser 601 and lead to the wind of indoor evaporator 602 Being turned on and off for road can be independently controlled by air door mechanism.That is, can control wind only by air door mechanism By indoor condenser 601, perhaps only pass through indoor evaporator 602 or by indoor condenser 601 and indoor evaporator Both 602, thus, it is possible to realize the independent control of wind direction.

In addition, as shown in Figure 1, compressor 604 outlet with interior condenser 601 entrance be connected to, indoor condenser 601 Egress selection be connected to via first throttle branch or the first through-flow branch with the entrance of outdoor heat exchanger 605, outdoor is changed It is connected to via the second throttling branch or the second through-flow branch with the entrance of indoor evaporator 602 to the egress selection of hot device 605, The outlet of indoor evaporator 602 is connected to the entrance of compressor 604.

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 Figure 1, heat pump air conditioning system can also include the first expansion switch Valve 603, the entrance of the first expansion switch valve 603 and the outlet of indoor condenser 601, the first expansion switch valve 603 Outlet be connected to the entrance of outdoor heat exchanger 605, wherein first throttle branch be first expansion switch valve 603 throttling stream Road, the first through-flow branch are 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 5th switch valve 608 and second expansion valve 607, wherein the first through-flow branch road is provided with the 5th 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 the 5th 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, the 5th 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, the 5th 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 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 entrance of indoor evaporator 602 is connected to, wherein the second throttling branch is the throttling runner of the second expansion switch valve 606, and second is logical Flow the through-flow runner that branch is the second expansion switch valve 606.

Embodiment alternatively, as shown in figure 3, the heat pump air conditioning system can also include the 6th switch valve 610 and third expansion valve 609, wherein the second through-flow branch road is provided with the 6th 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 6th switch valve 610 and indoor steaming The entrance for sending out device 602 is connected to form the second through-flow branch, and the outlet of outdoor heat exchanger 605 is via third expansion valve 609 and room The entrance of interior evaporator 602 is connected to form the second throttling branch.When system is under high-temperature refrigeration mode, third expansion valve 609 conductings, the 6th switch valve 610 are closed, and the outlet of outdoor heat exchanger 605 is via the second throttling branch and indoor evaporator 602 Entrance connection.When system is under low temperature heating mode, the 6th switch valve 610 conducting, third expansion valve 609 is closed, room The outlet of external heat exchanger 605 is connected to via the second through-flow branch with the entrance of indoor evaporator 602.

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 FIG. 1.

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 outlet of gas-liquid separator 611 is connected to the entrance of compressor 604.In this way, being flowed through indoor evaporator 602 Refrigerant out can first pass around gas-liquid separator 611 and carry out gas-liquid separation, and the gas isolated flows back into compressor 604 again In, to prevent liquid refrigerant from entering compressor 604 and damaging compressor 604, so as to extend making for compressor 604 With the service life, 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 6th 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 6th 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 6th switch valve 610, second The refrigerant outlet 612b of heat exchanger 612 is connected to the entrance of indoor evaporator 602.

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.Through After crossing the 6th switch valve 610 and indoor evaporator 602, the outlet of indoor evaporator 602 is still the gas of low-temp low-pressure, at this time the Six switch valves 610 and indoor evaporator 602 are only flowed through as runner.

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 entrance of indoor evaporator 602, and the second plate heat exchanger 612 is arranged electronic simultaneously In the electromotor cooling system of automobile.In this way, refrigerant can by the second plate heat exchanger 612 with it is cold in electromotor cooling system But liquid carries out heat exchange.

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 triple valve 615, the first end of the first coolant liquid branch 617 can be with the first outlet of triple valve 615 615b connection, the first end of the second coolant liquid branch 618 can be connected to the second outlet 615c of triple valve 615, pass through as a result, The triple valve 615 can control the first end on the coolant liquid main line 616 selectively first end with the first coolant liquid branch 617 Or second coolant liquid branch 618 first end connection.In addition, as shown in Figure 5 B, the second end of the first coolant liquid branch 617 with it is cold But liquid main line 616 second end connection, and the second end of the second coolant liquid branch 618 also with coolant liquid main line 616 second End connection, wherein motor, motor radiator 613 and the second water pump 614 are in series on coolant liquid main line 616, it is cooling first The second plate heat exchanger 612 is in series on 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 make the by controlling triple valve 615 The conducting of one coolant liquid branch 617, the coolant liquid in electromotor cooling system flows through the second plate heat exchanger 612 as a result, at this point, can To realize the heat exchange with refrigerant.However, not needed at this time board-like second when system work is under high-temperature refrigeration mode Refrigerant is heated in heat exchanger 612.Therefore, in such a case, it is possible to by control triple valve 615 make it is second cold But liquid branch 618 is connected, and the coolant liquid in electromotor cooling system is not passed through the second plate heat exchanger 612 as a result, and second board-like changes The runner of hot device 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, HVAC assembly 600 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.

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 620, In, the refrigerant inlet of the first plate heat exchanger 620 cools down branch and outdoor heat exchange via the battery of selective on or off The outlet of device 605 is connected to the entrance of indoor evaporator 602, the refrigerant outlet of the first plate heat exchanger 620 via Battery cooling for reflux branch is connected to the entrance of compressor 604, and the first plate heat exchanger 620 is connected on battery pack heat exchange system simultaneously In the battery coolant circuit of system.

It is board-like to be changed by increasing by the cooling branch of battery, first that is, as a main inventive concept of the invention It is that hot device 620 and battery cooling for reflux branch collectively constitute and that indoor evaporator 602 is in parallel for the system to motor cooling Cryogen diverter branch, in this way, refrigerant is segmented into two strands when high-temperature refrigeration is powered under the refrigerating mode of pond: wherein one is made Cryogen flows to indoor evaporator 602, and evaporates in evaporator 602 indoors, absorbs indoor environment heat, reduces room temperature； Another strand of the first plate heat exchanger of refrigerant flow direction 620, and pass through the electricity of the first plate heat exchanger 620 and battery pack heat-exchange system Coolant liquid in the coolant circuit of pond exchanges heat, and absorbs the heat of coolant liquid, and then the cooling to battery pack may be implemented.

In the present invention, there are two types of modes for the connection type of the refrigerant inlet of the first plate heat exchanger 620: in a kind of reality It applies in mode, as shown in fig. 7, the refrigerant inlet of the first plate heat exchanger 620 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 621.In this way, can be according to actual needs by opening or closing the first expansion valve 621 to control whether refrigerant can flow into To the refrigerant inlet of the first plate heat exchanger 620.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 621.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 620 is via selectivity The cooling branch of the battery of on or off is connected to the entrance of indoor evaporator 602.Specifically, automotive thermal tube reason system can be with Including the 4th switch valve 634, the egress selection of outdoor heat exchanger 605 via second throttling branch or the second through-flow branch with The entrance of 4th switch valve 634 is connected to, and in specific embodiment shown in Fig. 8, the outlet of outdoor heat exchanger 605 passes through second Expansion switch valve 606 is connected to the entrance of the 4th switch valve 634, the 4th outlet of switch valve 634 and entering for indoor evaporator 602 The refrigerant inlet of mouth connection, the first plate heat exchanger 620 cools down branch and the 4th via the battery of selective on or off The entrance of switch valve 634 is connected to, and is provided with flow valve 635 on the cooling branch road of battery.

In this way, can be by control flow valve 635 to control whether refrigerant can flow into the first plate heat exchanger 620 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 635 can also regulate and control the size that refrigerant flows into the flow of the first plate heat exchanger 620.

In this embodiment, under high-temperature refrigeration plus battery-heated model, 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 the 4th switch valve 634, another Plume is to flow valve 635, to realize the distribution of the flow proportional of two strands of refrigerants.In other words, at this point, refrigerant is first on main line It is upper to carry out what then reducing pressure by regulating flow was 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 620, In Battery cooling for reflux branch road is provided with the first check valve 628.That is, the first check valve 628 can only uniaxially allow refrigerant from The refrigerant outlet of first plate heat exchanger 620 flows to the entrance of compressor 604, and cannot flow round about.

When only cooling down in order to prevent to battery pack 622, the refrigerant of low-temp low-pressure is back to indoor evaporator 602 In, the outlet of indoor evaporator 602 can be connected to via third check valve 629 with the entrance of compressor 604.That is, third is unidirectional Valve 629 can only uniaxially allow refrigerant to flow to the entrance of compressor 604 from the outlet of indoor evaporator 602, and cannot be to phase Opposite direction flowing.

In one embodiment, it is additionally provided in the coolant circuit of battery pack heat-exchange system and the first plate heat exchanger 620 concatenated first water pumps 624, deputy tank 625 and battery pack 622.

In this way, the cooling liquid outlet of battery pack 622 is connected to the coolant inlet of deputy tank 625, the cooling of deputy tank 625 Liquid outlet is connected to the coolant inlet of the first water pump 624, the cooling liquid outlet and the first plate heat exchanger of the first water pump 624 620 coolant inlet connection, the cooling liquid outlet of the first plate heat exchanger 620 are connected to the coolant inlet of battery pack 622, 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 improve the efficiency of entire heat pump air conditioning system.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 other than with the outlet of indoor evaporator 602, The refrigerant outlet of first plate heat exchanger 620 is also connected to via battery cooling for reflux branch with the entrance of gas-liquid separator 611. In other words, gas-liquid separator 611 can also be first passed around from the refrigerant that the first plate heat exchanger 620 comes out carry out gas-liquid point From the gas isolated is flowed back into again in compressor 604, to prevent liquid refrigerant from entering compressor 604 and damaging pressure Contracting machine 604.

It is returned in the structural schematic diagram of automotive thermal tube reason system shown in Fig. 7 below.As shown in fig. 7, within the system, vapour Vehicle heat management system can also include first switch valve 630, wherein the outlet of indoor condenser 601 and first switch valve 630 Entrance connection, the egress selection of first switch valve 630 via first throttle branch or the first through-flow branch and outdoor heat exchange The entrance of device 605 is connected to.It is specific as shown in fig. 7, first switch valve 630 outlet can via the first expansion switch valve 603 with The entrance of outdoor heat exchanger 605 is connected to.In addition, the refrigerant inlet of the first plate heat exchanger 620 is connected or cuts via selectivity Battery heating branch only is connected to the entrance of first switch valve 630, and the refrigerant outlet of the first plate heat exchanger 620 is via electricity Pond is heated to reflux the outlet of branch Yu first switch valve 630, and the first plate heat exchanger 620 is connected on battery pack heat exchange simultaneously In the battery coolant circuit of system.

That is, being by the outlet of condenser 601 indoors and the first expansion switch as another inventive concept of the invention Between valve 603 increase first switch valve 630, and increase be respectively communicated with to the first plate heat exchanger 620 refrigerant inlet and The battery heating branch and battery of refrigerant outlet are heated to reflux branch, and battery heats branch, 620 and of the first plate heat exchanger Battery is heated to reflux branch and collectively constitutes the refrigerant shunting branch for heating to battery being in parallel with first switch valve 630 Road.In this way, the refrigerant of the medium temperature high pressure come out from indoor condenser 601 can when low temperature heating adds under battery-heated model To be divided into two strands: the wherein entrance of one refrigerant flow direction first switch valve 630, another strand of the first plate-type heat-exchange of refrigerant flow direction Device 620, and changed by the first plate heat exchanger 620 and the coolant liquid in the battery coolant circuit of battery pack heat-exchange system Heat, coolant liquid absorb the heat of refrigerant release, and then the heat temperature raising to battery pack may be implemented.

To heat branch convenient for whether control refrigerant flows through battery, second switch valve is provided on battery heating branch road 631.In this way, when needing to heat battery, for example, second switch valve 631 can be opened under battery-heated model, At this point, refrigerant can flow through the first plate heat exchanger 620, heat is provided and gives battery pack heat-exchange system.When not needing to battery When being heated, for example, second switch valve 631 can be closed under battery refrigerating mode, prevent the refrigerant of high temperature and pressure into Enter the first plate heat exchanger 620 and heat temperature raising is carried out to battery, the temperature of battery is caused to further increase.

To prevent under battery-heated model, from the cryogenic high pressure of the refrigerant outlet of the first plate heat exchanger 620 out Refrigerant flow directly into compressor 604, cause the damage to compressor, be provided with third on battery cooling for reflux branch road and open Close valve 633.It, can be with closing third switch valve 633, so that board-like being changed from first in this way, when system is under battery-heated model The refrigerant for the cryogenic high pressure that the refrigerant outlet of hot device 620 comes out all is heated to reflux branch via battery and flows to the first expansion Switch valve 603.

To prevent under battery refrigerating mode, the gas refrigerant of the high temperature and pressure come out from indoor condenser 601 passes through After first switch valve 630, it is heated to reflux the refrigerant outlet that branch flows to the first plate heat exchanger 620 along battery, in battery It is heated to reflux branch road and is provided with second one-way valve 632.That is, second one-way valve 632 uniaxially can allow refrigerant from first The refrigerant outlet of plate heat exchanger 620 flows to the first expansion switch valve 603, and cannot flow in opposite direction.

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 without indoor condenser 601 by air door mechanism, due to calm process, indoors It not will do it heat exchange in condenser 601, which only uses as runner, and indoor condenser 601 exports at this time It 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 plays switch valve action, 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 valve 603 outlet is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dissipated It is dealt 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 switched with the second expansion Valve 606 is connected, and the second expansion switch valve 606 plays expansion valve action at this time, 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 root According to the pressure-temperature sensor between the entrance for the outlet and gas-liquid separator 611 for being mounted on indoor evaporator 602 pressure and Temperature acquisition data calculates indoor evaporator 602 and exports refrigerant superheat degree to adjust.Second expansion switch valve 606 outlet and room The entrance of interior evaporator 602 is connected, and low temperature and low pressure liquid is evaporated in evaporator 602 indoors, so that indoor evaporator 602 Outlet is the gas of low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is passed through gas Liquid/gas separator 611 separates, and the gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.HVAC is total at this time Indoor evaporator 602 is flowed only through at the flow direction of 600 apoplexy, the calm process of indoor condenser 601 is only used as refrigerant flow path stream It crosses, second switch valve 631 is in close state, and the first expansion valve 621 is in close state, and first switch valve 630, which is in, to be opened State, third switch valve 633 are in close state.

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 without indoor condenser 601 by air door mechanism, due to calm process, cold indoors It not will do it heat exchange in condenser 601, which only uses as runner, and the indoor outlet of condenser 601 at this time is still For 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 actions, only flow through as runner, and the first expansion switch valve 603 outlet at this time is still the gas of high temperature and pressure.The One expansion switch valve 603 outlet is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is distributed Into air, the outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 and 621 phase of the first expansion valve Even, cool down by the throttling of the first expansion valve 621, the outlet of the first expansion valve 621 is low temperature and low pressure liquid.First expansion valve 621 apertures can give certain aperture according to actual needs, this aperture can be according to being mounted on the first plate heat exchanger 620 The pressure and temperature of pressure-temperature sensor between refrigerant outlet and the entrance of gas-liquid separator 611 acquires data to adjust Section.The outlet of first expansion valve 621 is connected with the refrigerant inlet of the first plate heat exchanger 620, and low temperature and low pressure liquid is in the first plate Heat exchange is carried out with the hot water come out from battery pack 622 in formula heat exchanger 620, so that the refrigerant of the first plate heat exchanger 620 Outlet is the gas of low-temp low-pressure.The refrigerant outlet of first plate heat exchanger 620 is connected with gas-liquid separator 611, 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.At this time in HVAC assembly 600, the calm process of indoor condenser 601 is only flowed through as refrigerant flow path, second switch Valve 631 is in close state, and first switch valve 630 is in the open state, and third switch valve 633 is in the open state, and first is swollen Swollen valve 621 is in running order, that is, plays throttling action, the second expansion switch valve 606 is in close state.

Mode three: high-temperature refrigeration is powered on pond refrigerating mode.When in this mode, it is same that whole system forms a high-temperature refrigeration When battery cooling recirculation system.As shown in fig. 7, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with interior Condenser 601 is connected.At this point, control wind without indoor condenser 601 by air door mechanism, due to calm process, In It not will do it heat exchange in indoor condenser 601, which only uses as runner, at this time indoor condenser 601 Outlet is still the gas of high temperature and pressure.The indoor outlet of condenser 601 is connected with the first expansion switch valve 603, the first expansion at this time Switch valve 603 plays switch valve action, only flows through as runner, and the first expansion switch valve 603 outlet is still high temperature and pressure at this time Gas.First expansion switch valve 603 outlet is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, Heat is dispersed into air, and the outlet of outdoor heat exchanger 605 is the liquid of medium temperature high pressure.The outlet of outdoor heat exchanger 605 is respectively with the Two expansion switch valves 606 are connected with the first expansion valve 621, at this point, the liquid point of the medium temperature high pressure come out from outdoor heat exchanger 605 At two strands: one flows to the entrance of the second expansion switch valve 606, at this point, the second expansion switch valve 606 plays expansion valve action phase Together, throttling action is played as restricting element, outlet is low temperature and low pressure liquid.The aperture of second expansion switch valve 606 can be with Certain aperture is given according to actual needs, this aperture can be according to the outlet and gas-liquid separation for being mounted on indoor evaporator 602 The pressure and temperature acquisition data of pressure-temperature sensor between the entrance of device 611 calculate the outlet of indoor evaporator 602 refrigeration The agent degree of superheat is adjusted.Second expansion switch valve 606 outlet is connected with the entrance of indoor evaporator 602, and low temperature and low pressure liquid exists It is evaporated in indoor evaporator 602, so that the outlet of indoor evaporator 602 is the gas of low-temp low-pressure.Another plume is to first The entrance of expansion valve 621, the aperture of the first expansion valve 621 can give certain aperture according to actual needs, this aperture can be with According to the pressure-temperature sensor between the refrigerant outlet of the first plate heat exchanger 620 and the entrance of gas-liquid separator 611 Pressure and temperature acquires data to adjust.By the reducing pressure by regulating flow of the first expansion valve 621, the outlet of the first expansion valve 621 is low Warm low pressure liquid.The outlet of first expansion valve 621 is connected with the refrigerant inlet of the first plate heat exchanger 620, low temperature and low pressure liquid Heat exchange is carried out with the hot water come out from battery pack 622 in the first plate heat exchanger 620, so that the first plate heat exchanger 620 Refrigerant outlet be low-temp low-pressure gas.The outlet of indoor evaporator 602 and the refrigerant of the first plate heat exchanger 620 go out Mouthful be connected respectively with gas-liquid separator 611, the refrigerant that is come out from the refrigerant outlet of the first plate heat exchanger 620 and from interior The refrigerant that the outlet of evaporator 602 comes out converges, and the liquid not being evaporated is separated by gas-liquid separator 611, last low The gas of warm low pressure returns in compressor 604, and a circulation is consequently formed.The flow direction of 600 apoplexy of HVAC assembly flows only through at this time Indoor evaporator 602, the calm process of indoor condenser 601, only flows through as refrigerant flow path, and second switch valve 631, which is in, to close Closed state, first switch valve 630 is in the open state, and third switch valve 633 is in the open state, the second expansion switch valve 606 In running order, the first expansion valve 621 is in running order.

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.Second expansion switch valve 606 outlet is connected with the entrance of indoor evaporator 602.It is logical It crosses air door mechanism control wind and only flows to indoor condenser 601 without flowing to indoor evaporator 602, so that in indoor evaporator 602 It without heat exchange, is only used as a runner, outlet is still the gas of low-temp low-pressure.Indoor evaporator 602 and gas-liquid Separator 611 is connected, and the liquid not being evaporated is separated by gas-liquid separator 611, the gas of last low-temp low-pressure returns to pressure In contracting machine 604, a circulation is consequently formed.The flow direction of 600 apoplexy of HVAC assembly flows only through indoor condenser 601 at this time, indoor The calm process of evaporator 602, only flows through as refrigerant flow path, and second switch valve 631 is in close state, first switch valve 630 is in the open state, and third switch valve 633 is in close state, and the first expansion valve 621 is in close state.

Mode five: battery-heated model.System in this mode when, battery pack heat-exchange system formed a battery pack Heating circulation system.

As shown in fig. 7, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with indoor 601 phase of condenser Even, at this point, by air door mechanism control wind without indoor condenser 601, due to calm process, condenser indoors It not will do it heat exchange in 601, which only uses as runner, and the indoor outlet of condenser 601 is still height at this time The gas of warm high pressure.The indoor outlet of condenser 601 is connected with second switch valve 631, second switch valve 631 and the first plate-type heat-exchange The refrigerant inlet of device 620 is connected, and the gas of the high temperature and pressure flowed out from indoor condenser 601 is in the first plate heat exchanger 620 In heat exchange is carried out with the cold water come out from battery pack 622, the refrigerant outlet of the first plate heat exchanger 620 is medium temperature high pressure Liquid refrigerant.The refrigerant outlet of first plate heat exchanger 620 passes through second one-way valve 632 and the first expansion switch valve 603 Entrance be connected.The first expansion switch valve 603 plays expansion valve at this time, plays throttling action as restricting element, goes out Mouth is the liquid of low-temp low-pressure.Wherein, the aperture of the first expansion switch valve 603 can give certain open according to actual needs Degree, this aperture (can be pressed according to the temperature acquisition data of the pressure-temperature sensor in the exit for being mounted on compressor 604 Contracting machine delivery temperature) number adjust.First expansion switch valve 603 outlet is connected with outdoor heat exchanger 605, outdoor heat exchanger 605 absorb the heat of outdoor air, and the outlet of outdoor heat exchanger 605 is the gas of low-temp low-pressure.The outlet of outdoor heat exchanger 605 and the Two expansion switch valves 606 are connected, and the second expansion switch valve 606 plays switch valve at this time, only flow through as a runner.The Two expansion switch valve 606 outlets are connected with the entrance of indoor evaporator 602.Wind, which is controlled, by air door mechanism does not flow to indoor evaporation Device 602, so that only using as a runner without heat exchange in indoor evaporator 602, outlet is still low-temp low-pressure Gas.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is separated by gas-liquid separator 611, The gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.Air door machine in HVAC assembly 600 at this time Structure is closed, and wind does not flow to indoor condenser 601 and indoor evaporator 602, only flows through as refrigerant flow path, first switch valve 630 are in close state, and second switch valve 631 is in the open state, and third switch valve 633 is in close state, the first expansion Valve 621 is in close state.

Mode six: low temperature heating adds battery-heated model.System in this mode when, battery pack heat-exchange system is formed One battery pack heating circulation system.

As shown in fig. 7, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with indoor 601 phase of condenser Even, the gas of high temperature and pressure is condensed in condenser 601 indoors, so that the indoor outlet of condenser 601 is medium temperature high pressure Liquid.At this point, the liquid of the medium temperature high pressure come out from indoor condenser 601 is divided into two strands: one is flowed by second switch valve 631 Enter the first plate heat exchanger 620, carries out heat exchange with the cold water come out from battery pack 622 at the first plate heat exchanger 620, the The refrigerant outlet of one plate heat exchanger 620 is the liquid refrigerant of medium temperature high pressure, and the refrigerant of the first plate heat exchanger 620 goes out Mouth is connected by second one-way valve 632 with the outlet of first switch valve 630.Another stock then after first switch valve 630, with from The liquid refrigerant for the medium temperature high pressure that the outlet of second one-way valve 632 comes out converges, and flows into the first expansion switch valve 603 Entrance.The first expansion switch valve 603 plays expansion valve at this time, plays throttling action as restricting element, outlet is low The liquid of warm low pressure.Wherein, the aperture of the first expansion switch valve 603 can give certain aperture according to actual needs, this is opened Degree can be according to temperature acquisition data (the i.e. compressor air-discharging of the pressure-temperature sensor in the exit for being mounted on compressor 604 Temperature) number adjust.First expansion switch valve 603 outlet is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 absorbs The heat of outdoor air, the outlet of outdoor heat exchanger 605 are the gas of low-temp low-pressure.The outlet of outdoor heat exchanger 605 and the second expansion Switch valve 606 is connected, and the second expansion switch valve 606 plays switch valve at this time, only flows through as a runner.Second expansion The outlet of switch valve 606 is connected with the entrance of indoor evaporator 602.Wind, which is controlled, by air door mechanism only flows to indoor condenser 601 Without flowing to indoor evaporator 602, so that only using, going out as a runner without heat exchange in indoor evaporator 602 Mouth is still the gas of low-temp low-pressure.Indoor evaporator 602 is connected with gas-liquid separator 611, and the liquid not being evaporated is passed through gas Liquid/gas separator 611 separates, and the gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.HVAC is total at this time Indoor condenser 601 is flowed only through at the flow direction of 600 apoplexy, the calm process of indoor evaporator 602 is only used as refrigerant flow path stream It crosses, second switch valve 631 is in the open state, and first switch valve 630 is in the open state, and third switch valve 633, which is in, closes State, the first expansion valve 621 are in close state.

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

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, first switch valve (630) and the first plate heat exchanger (620), the heat pump air conditioning system include HVAC assembly (600), compressor (604) and outdoor heat exchanger (605), the HVAC assembly (600) include indoor condenser (601), interior Evaporator (602) and air door mechanism, the air door mechanism are used to selectively turn on the wind for leading to the indoor condenser (601) Road and/or the air duct for leading to the indoor evaporator (602), the outlet of the compressor (604) and the indoor condenser (601) entrance connection, the outlet of the interior condenser (601) is connected to the entrance of the first switch valve (630), described The egress selection of first switch valve (630) via first throttle branch or the first through-flow branch and the outdoor heat exchanger (605) entrance connection, the egress selection of the outdoor heat exchanger (605) via the second throttling branch or the second through-flow branch Road is connected to the entrance of the indoor evaporator (602), the outlet and the compressor (604) of the indoor evaporator (602) Entrance connection, the refrigerant inlet of first plate heat exchanger (620) is cooling via the battery of selective on or off Branch is connected to the outlet of the outdoor heat exchanger (605) or with the entrance of the indoor evaporator (602), and via The battery heating branch of selective on or off is connected to the entrance of the first switch valve (630), and described first board-like changes Battery cooling for reflux branch and the compressor (604) of the refrigerant outlet of hot device (620) via selective on or off Entrance connection, and be heated to reflux via battery the outlet of branch Yu the first switch valve (630), first plate Formula heat exchanger (620) is connected in the battery coolant circuit of the battery pack heat-exchange system simultaneously.

2. automotive thermal tube according to claim 1 manages system, which is characterized in that be provided on battery heating branch road Second switch valve (631).

3. 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 third switch valve (633).

4. automotive thermal tube according to claim 3 manages system, which is characterized in that on the battery cooling for reflux branch road also It is provided with the first check valve (628).

5. automotive thermal tube according to claim 1 manages system, which is characterized in that be heated to reflux branch Lu Shangshe in the battery It is equipped with second one-way valve (632).

6. automotive thermal tube according to claim 1 manages system, which is characterized in that first plate heat exchanger (620) 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 (621) 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 the automotive thermal tube reason system further includes the Four switch valves (634), the egress selection of the outdoor heat exchanger (605) via it is described second throttling branch or described second Through-flow branch is connected to the entrance of the 4th switch valve (634), the outlet of the 4th switch valve (634) and the indoor steaming The entrance connection of device (602) is sent out, the refrigerant inlet of first plate heat exchanger (620) is via selective on or off The cooling branch of battery is connected to the entrance of the 4th switch valve (634), and is provided with stream on the cooling branch road of the battery It measures valve (635).

8. 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 third check valve (629) with the entrance of the compressor (604).

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 water pump (624) of first plate heat exchanger (620), deputy tank (625) and battery It wraps (622).

10. automotive thermal tube according to claim 1 manages system, which is characterized in that the first through-flow branch road is provided with 5th switch valve (608), the first throttle branch road are provided with the second expansion valve (607).

11. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further includes the One expansion switch valve (603), the outlet of the entrance of first expansion switch valve (603) and the indoor condenser (601), 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 The throttling runner of first expansion switch valve (603), the first through-flow branch are first expansion switch valve (603) Through-flow runner.

12. automotive thermal tube according to claim 1 manages system, which is characterized in that the second through-flow branch road is provided with 6th switch valve (610), the second throttling branch road are provided with third expansion valve (609).

13. automotive thermal tube according to claim 12 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.

14. automotive thermal tube according to claim 13 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 6th switch valve (610).

15. automotive thermal tube described in 3 or 14 manages system according to claim 1, 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.

16. 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 entrance of the indoor evaporator (602), and the second throttling branch is The throttling runner of second expansion switch valve (606), the second through-flow branch are second expansion switch valve (606) Through-flow runner.

17. automotive thermal tube according to claim 16 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 (612a) and second expansion switch valve (606), second plate heat exchanger (612) Refrigerant outlet (612b) is connected to the entrance of the indoor evaporator (602), and second plate heat exchanger (612) is same When be arranged in the electromotor cooling system.

18. automotive thermal tube according to claim 17 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).

19. 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 The outlet of entrance and the indoor evaporator (602) from device (611), the refrigeration of first plate heat exchanger (620) Agent outlet is connected to via the battery cooling for reflux branch with the entrance of the gas-liquid separator (611).

20. automotive thermal tube according to claim 1 manages system, which is characterized in that the HVAC assembly (600) further includes Ptc heater (619), the ptc heater (619) are used to heat the wind for flowing through the indoor condenser (601).

21. automotive thermal tube according to claim 20 manages system, which is characterized in that the ptc heater (619) is arranged in The windward side or leeward side of the interior condenser.

22. a kind of electric car, which is characterized in that managed including automotive thermal tube described according to claim 1 any one of -21 System.