CN107351633B - 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
CN107351633B
CN107351633B CN201610309706.5A CN201610309706A CN107351633B CN 107351633 B CN107351633 B CN 107351633B CN 201610309706 A CN201610309706 A CN 201610309706A CN 107351633 B CN107351633 B CN 107351633B
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China
Prior art keywords
heat exchanger
outlet
valve
entrance
cooling
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CN201610309706.5A
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Chinese (zh)
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CN107351633A (en
Inventor
汪孟瑛
叶梅娇
陈雪峰
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
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
    • B60H1/2225—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention discloses a kind of 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, engine-cooling system and the first plate heat exchanger, heat pump air conditioning system and engine-cooling system pass through the first plate heat exchanger respectively and battery pack heat-exchange system exchanges heat, heat pump air conditioning system includes compressor, indoor condenser, indoor evaporator and outdoor 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 entrance of the outlet of the outdoor heat exchanger or the indoor evaporator, the refrigerant outlet of first plate heat exchanger is connected to via battery cooling for reflux branch with the entrance of the compressor.As a result, in addition to the demand realizing interior refrigeration and heating, also has the function of battery cooling and heating, battery is made to work within the scope of suitable temperature always, improve battery efficiency, cruising ability and service life.

Description

Automotive thermal tube manages system and electric car
Technical field
The present invention relates to automotive air-conditioning systems, and in particular, to a kind of automotive thermal tube reason system and including the automotive thermal tube The electric car of reason 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
In order to solve the problems in the existing technology, according to an aspect of the present invention, a kind of automotive thermal tube reason is provided System, wherein automotive thermal tube reason system include heat pump air conditioning system, battery pack heat-exchange system, engine-cooling system and First plate heat exchanger, the heat pump air conditioning system and the engine-cooling system pass through first plate heat exchanger respectively It exchanges heat with the battery pack heat-exchange system, the heat pump air conditioning system includes compressor, indoor condenser, indoor evaporator and room External heat exchanger, the outlet of the compressor are connected to the entrance of the indoor condenser, the egress selection of the interior condenser It is connected to via first throttle branch or the first through-flow branch with the entrance of the outdoor heat exchanger to property, the outdoor heat exchanger It is connected to via the second through-flow branch with the entrance of the compressor to egress selection or via the second throttling branch and the room The entrance of interior evaporator is connected to, and the outlet of the indoor evaporator is connected to the entrance of the compressor, and described first board-like changes The refrigerant inlet of hot device is via the cooling branch of battery of selective on or off and outlet or the institute of the outdoor heat exchanger The entrance connection of indoor evaporator is stated, the refrigerant outlet of first plate heat exchanger is via battery cooling for reflux branch and institute State the entrance connection of compressor.
Optionally, the refrigerant inlet of first plate heat exchanger is cold via the battery of selective on or off But the outlet of branch and the outdoor heat exchanger, the cooling branch road of the battery are provided with the first expansion valve.
Optionally, automotive thermal tube reason system further includes first switch valve, and the second throttling branch is via described the One switch valve is connected to the entrance of the indoor evaporator, and the refrigerant inlet of first plate heat exchanger is led via selectivity Logical or cut-off the cooling branch of battery is connected to the entrance of the first switch valve, and is arranged on the cooling branch road of the battery There is flow valve.
Optionally, the first check valve is provided on the battery cooling for reflux branch road.
Optionally, first plate heat exchanger is connected in the coolant circuit of the battery pack heat-exchange system, and It is additionally provided in the coolant circuit and concatenated first water pump of first plate heat exchanger, deputy tank and battery pack.
Optionally, the engine-cooling system includes the second water pump, engine, indoor heater cores and the first threeway The outlet of valve, second water pump is connected to the entrance of first triple valve, two outlets difference of first triple valve It is connected to the entrance of the engine coolant entrance of first plate heat exchanger and the indoor heater cores, it is described indoor warm The outlet of wind core and the engine coolant of first plate heat exchanger export the coolant inlet with the engine Connection, the cooling liquid outlet of the engine are connected to the entrance of second water pump.
Optionally, the engine-cooling system further includes the first ptc heater and the second triple valve, the interior warm wind The outlet of core and the engine coolant outlet of first plate heat exchanger are connected to the entrance of second triple valve, The first outlet of second triple valve is connected to the coolant inlet of the engine, the second outlet of second triple valve It is connected to the entrance of second water pump, the outlet and described first of second water pump is arranged in first ptc heater Between the entrance of triple valve, or it is arranged between the entrance of second water pump and the second outlet of second triple valve.
Optionally, the described first through-flow branch road is provided with second switch valve, and the first throttle branch road is provided with the Two expansion valves.
Optionally, the heat pump air conditioning system further includes expansion switch valve, the entrance of the expansion switch valve and the interior The outlet of the outlet of condenser, the expansion switch valve is connected to the entrance of the outdoor heat exchanger, the first throttle branch Road is the throttling runner of the expansion switch valve, and the first through-flow branch is the through-flow runner of the expansion switch valve.
Optionally, the described second through-flow branch road is provided with third switch valve, and the second throttling branch road is provided with the Three expansion valves.
Optionally, the outlet of the indoor evaporator is connected to via second one-way valve with the entrance of the compressor.
Optionally, the heat pump air conditioning system is applied to electric car, and the second through-flow branch road is additionally provided with second Plate heat exchanger, second plate heat exchanger are arranged in the electromotor cooling system of the electric car simultaneously.
Optionally, the described second through-flow branch road is provided with third switch valve, the refrigerant of second plate heat exchanger The outlet of entrance and the outdoor heat exchanger, the refrigerant outlet of second plate heat exchanger and the third switch valve Entrance connection.
Optionally, the electromotor cooling system include connect with second plate heat exchanger be formed into a loop motor, Motor radiator and third water pump.
Optionally, the heat pump air conditioning system further includes gas-liquid separator, the outlet of the indoor evaporator and the gas The entrance of liquid/gas separator is connected to, and the outlet of the outdoor heat exchanger is via the described second through-flow branch and the gas-liquid separator Entrance connection, the refrigerant outlet of first plate heat exchanger is via the battery cooling for reflux branch and the gas-liquid separation The entrance of device is connected to, and the outlet of the gas-liquid separator is connected to the entrance of the compressor.
Optionally, the heat pump air conditioning system further includes the second ptc heater, and second ptc heater is for heating stream Wind through the indoor condenser.
Optionally, the windward side or leeward side of the indoor condenser is arranged in second ptc heater.
According to the second aspect of the invention, a kind of electric car is provided, including above-described automotive thermal tube manages system.
Automotive thermal tube provided by the invention manages system, in addition to can use heat pump air conditioning system realize interior cooling in summer and The demand of winter heating, there are also the functions of battery cooling and battery heating.By the first plate heat exchanger, heat pump sky can be passed through The refrigerant and battery pack coolant liquid of adjusting system carry out heat exchange, cool down to battery, and can pass through the coolant liquid and electricity of engine Pond packet coolant liquid carries out heat exchange, heats to battery, using the heat exchange between three kinds of media, is suitable under different vehicle conditions to energy The effective use in source makes battery work within the scope of suitable temperature always, to improve the efficiency for charge-discharge of battery, continuation of the journey energy Power and service life.In addition, the present invention can both realize automotive air-conditioning system in the case where not changing refrigerant circulation direction Refrigeration and heating, structure is simple, so that whole system pipeline arrangement is simple, is easy to produce in batches.
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 is the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention；
Fig. 6 is a kind of structural schematic diagram of the automotive thermal tube reason system of embodiment according to the present invention；
Fig. 7 is the structural schematic diagram of the automotive thermal tube reason system of another 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 structural schematic diagram of the automotive thermal tube reason system of another embodiment according to the present invention；
Figure 10 is the overlooking structure diagram for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 11 is the schematic diagram of the section structure crossed by Figure 10 middle line AB-AB, wherein the first valve port and the second valve port are equal It is in the open state；
Figure 12 is the positive structure diagram along a visual angle for the expansion switch valve that the preferred embodiment for the present invention provides；
Figure 13 is the schematic diagram of the section structure crossed by Figure 10 middle line AB-AB, wherein the first valve port is in open shape State, the second valve port are in closed state；
Figure 14 is the schematic diagram of the section structure crossed by Figure 10 middle line AB-AB, wherein the first valve port is in closed form State, the second valve port are in the open state；
Figure 15 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 16 is the schematic diagram of the section structure crossed by Figure 15 middle line AC-AC, wherein the first valve port is in open shape State, the second valve port are in closed state；
Figure 17 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 18 is the partial enlarged view in the portion A in Figure 17；
Figure 19 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 20 is the third schematic diagram of internal structure for the expansion switch valve that the preferred embodiment for the present invention provides, wherein the One valve port is in close state, and the second valve port is in opening state.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usually phase For the page of attached drawing, " upstream, downstream " is that e.g., for the flow direction of refrigerant, have relative to medium Body, it is downstream towards the flow direction of refrigerant, is upstream away from the flow direction of refrigerant, " inside and outside " refers to corresponding portion Part profile it is interior with it is outer.
In the present invention, electric car mainly refers to hybrid vehicle.
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 and air door mechanism (not shown), wherein HVAC assembly 600 may include indoor condenser 601 and indoor evaporator 602. Air door mechanism can be used for leading to the air duct of indoor evaporator 602 and indoor condenser 601.As shown in Figure 1, compressor 604 outlet with interior condenser 601 entrance be connected to, the egress selection of indoor condenser 601 via first throttle branch Road or the first through-flow branch are connected to the entrance of outdoor heat exchanger 605, the egress selection of outdoor heat exchanger 605 via second Throttling branch is connected to the entrance of indoor evaporator 602 or is connected to via the second through-flow branch with the entrance of compressor 604, indoor The outlet of 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 expansion switch valve 603, the outlet of the entrance of the expansion switch valve 603 and indoor condenser 601, the outlet and room of the expansion switch valve 603 The entrance of external heat exchanger 605 is connected to, wherein first throttle branch is the throttling runner for expanding switch valve 603, the first through-flow branch For the through-flow runner for expanding 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 second switch valve 608 and second expansion valve 607, wherein the first through-flow branch road is provided with second 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 second 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 heat pump high-temperature refrigeration circulation pattern, the The conducting of two switch valves 608, the second expansion valve 607 are closed, and the outlet of indoor condenser 601 is changed via the first through-flow branch with outdoor The entrance of hot device 605 is connected to.When system is under heat pump low-temperature heating circulation pattern, the conducting of the second expansion valve 607, second is opened It closes valve 608 to close, the outlet of indoor condenser 601 is connected to via first throttle branch with the entrance of outdoor heat exchanger 605.
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 Expand switch valve 603, that is, embodiment shown in FIG. 1.
It is similar with the implementation of the first through-flow branch and first throttle branch in the embodiment of above-mentioned replacement, such as Shown in Fig. 1 and Fig. 2, the second through-flow branch road is provided with third switch valve 610, and the second throttling branch road is provided with third expansion valve 609.Specifically, as shown in figure 3, the outlet of outdoor heat exchanger 605 connects via the entrance of third switch valve 610 and compressor 604 It passes to form the second through-flow branch, the outlet of outdoor heat exchanger 605 enters via third expansion valve 609 and indoor evaporator 602 Mouth connection is to form the second throttling branch.When system is under heat pump high-temperature refrigeration circulation pattern, third expansion valve 609 is led Logical, third switch valve 610 is closed, the outlet of outdoor heat exchanger 605 via the second throttling branch and indoor evaporator 602 entrance Connection.When system is under heat pump low-temperature heating circulation pattern, third switch valve 610 is connected, and third expansion valve 609 is closed, The outlet of outdoor heat exchanger 605 is connected to via the second through-flow branch with the entrance of compressor 604.
Fig. 3 shows the structural schematic diagram of the heat pump air conditioning system of another embodiment according to the present invention.Such as Fig. 3 institute Show, which can also include gas-liquid separator 611 and second one-way valve 615, wherein indoor evaporator 602 Outlet is connected to the entrance of gas-liquid separator 611, and the outlet of gas-liquid separator 611 is connected to the entrance of compressor 604.In this way, The refrigerant flowed out through indoor evaporator 602 can first pass around gas-liquid separator 611 and carry out gas-liquid separation, the gas isolated It is flowed back into compressor 604 again, thus prevent liquid refrigerant from entering compressor 604 and damaging compressor 604, so as to Extend the service life of compressor 604, and improves the efficiency of entire heat pump air conditioning system.The outlet of indoor evaporator 602 passes through Second one-way valve 615 is connected to the entrance of gas-liquid separator 611.Here, setting second one-way valve 615 is in order to prevent in heat pump Refrigerant is back to indoor evaporator 602 under low-temperature heating circulation pattern (described in detail below), influences heating effect.
Under heat pump low-temperature heating circulation pattern, in order to improve heating ability, it is preferable that as shown in figure 4, 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.The upper of third switch valve 610 can be arbitrarily arranged in second plate heat exchanger 612 Trip or downstream.In the embodiment illustrated in fig. 4, the upstream of third switch valve 610 is arranged in the second plate heat exchanger 612, that is, The refrigerant inlet 612a of second plate heat exchanger 612 and the outlet of outdoor heat exchanger 605, the second plate heat exchanger 612 Refrigerant outlet 612b be connected to the entrance of third switch valve 610.(not shown) in another embodiment, second is board-like The downstream of third switch valve 610 is arranged in heat exchanger 612, that is, the refrigerant inlet 612a and third of the second plate heat exchanger 612 The outlet of switch valve 610, the refrigerant outlet 612b of the second plate heat exchanger 612 and the entrance of gas-liquid separator 611 connect It is logical.
At the same time, the second plate heat exchanger 612 is arranged in electromotor cooling system simultaneously.As shown in figure 4, motor is cooling System may include the motor, motor radiator 613 and third 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 third switch valve 610 and indoor evaporator 602, what is come out from indoor evaporator 602 is still the gas of low-temp low-pressure, at this time Third switch valve 610 and indoor evaporator 602 are only flowed through as runner.
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. 5 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 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. 6 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. 6, It may include heat pump air conditioning system described above, battery pack heat-exchange system, engine cool system that the automotive thermal tube, which manages system, System and the first plate heat exchanger 620, wherein heat pump air conditioning system and the engine-cooling system pass through first respectively and board-like change Hot device 620 exchanges heat with battery pack heat-exchange system.In the present invention, the first plate heat exchanger 620 is three ply board formula heat exchanger.It is so-called " three ply board formula heat exchanger " refers to the internal plate heat exchanger for being formed with three heat exchanger channels, wherein stream in a heat exchanger channels Dynamic is the refrigerant of heat pump air conditioning system, and what is flowed in a heat exchanger channels is battery coolant liquid, stream in a heat exchanger channels Dynamic is engine coolant.
In the present invention, the refrigerant inlet 620a of the first plate heat exchanger 620 can be via selective on or off Battery cooling branch and outdoor heat exchanger 605 outlet, or cool down branch via the battery of selective on or off It is connected to the entrance of indoor evaporator 602.In addition, the refrigerant outlet 620b of the first plate heat exchanger 620 is cooling via battery Reflux branch is connected to the entrance of compressor 604.
In the present invention, it increases and is total to by the cooling branch of battery, the first plate heat exchanger 620 and battery cooling for reflux branch With composition and that indoor evaporator 602 is in parallel for the refrigerant diverter branch cooling to battery, in this way, working as heat pump high temperature When under refrigeration power-up pond cooling cycle mode, 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, room temperature is reduced；Another strand of refrigerant flow direction One plate heat exchanger 620, and by the first plate heat exchanger 620 with it is cold in the battery coolant circuit of battery pack heat-exchange system But liquid exchanges heat, and absorbs the heat of coolant liquid, and then the cooling to battery pack 622 may be implemented.
In the present invention, there are two types of the connection types of the refrigerant inlet 620a of the first plate heat exchanger 620: in a kind of reality It applies in mode, as shown in fig. 6, the refrigerant inlet 620a of the first plate heat exchanger 620 can be via selective on or off Battery cooling branch and outdoor heat exchanger 605 outlet.Specifically, to can be set first on the cooling branch road of battery swollen Swollen valve 621.In this way, can whether can according to actual needs by opening or closing the first expansion valve 621 with controlling refrigerant Flow into the refrigerant inlet 620a of the first plate heat exchanger 620.That is, it is in the conductive state that control battery, which cools down branch, and also It is in off state.
In this embodiment, in the case where heat pump high-temperature refrigeration is powered on pond cooling cycle mode, go out from outdoor heat exchanger 605 The refrigerant for the medium temperature high pressure come directly is divided into two strands: one flows to third expansion valve 609；Another plume is to the first expansion valve 621.In other words, refrigerant is to carry out throttling decrease temperature and pressure after shunting respectively on every road Tiao Zhi again at this time.
In another embodiment, as shown in fig. 7, automotive thermal tube reason system further includes first switch valve 626, the second section Stream branch is connected to via first switch valve 626 with the entrance of indoor evaporator 602.Specifically, embodiment shown in Fig. 7 In, the outlet of third expansion valve 609 is connected to via first switch valve 626 with the entrance of indoor evaporator 602.First plate-type heat-exchange The refrigerant inlet 620a of device 620 cools down the entrance of branch and first switch valve 626 via the battery of selective on or off Connection, and flow valve 627 is provided on the cooling branch road of battery.
In this way, can be by control flow valve 627 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 627 can also regulate and control the size that refrigerant flows into the flow of the first plate heat exchanger 620 according to actual needs.
In this embodiment, in the case where heat pump high-temperature refrigeration is powered on pond cooling cycle mode, go out from outdoor heat exchanger 605 The refrigerant for the medium temperature high pressure come is divided into two strands after the throttling of third expansion valve 609: one flows to first switch valve 626, Another plume is to flow valve 627, wherein the function of the distribution of the flow proportional of two strands of refrigerants may be implemented in flow valve 627.This When, refrigerant is first to carry out throttling decrease temperature and pressure on main line then to be shunted again.
In order to prevent under heat pump low-temperature heating circulation pattern, the refrigerant of low-temp low-pressure is back to the first plate heat exchanger In 620, the first check valve 628 is provided on battery cooling for reflux branch road.That is, the first check valve 628 can only uniaxially allow Refrigerant flows to the entrance of compressor 604 from the refrigerant outlet 620b of the first plate heat exchanger 620, and cannot be round about Flowing.
In addition, as shown in Figure 6 and Figure 7, the first plate heat exchanger 620 is connected on the coolant circuit of battery pack heat-exchange system In, and be additionally provided with and concatenated first water pump 624 of the first plate heat exchanger 620, deputy tank 625 and electricity in coolant circuit Pond packet 622.
Wherein, battery coolant liquid can flow into first via the battery coolant inlet 620f of the first plate heat exchanger 620 Plate heat exchanger 620, and the first plate heat exchanger is flowed out via the battery cooling liquid outlet 620e of the first plate heat exchanger 620 620.When the cooling branch conducting of battery, the refrigerant of heat pump air conditioning system can be via the refrigeration of the first plate heat exchanger 620 Agent entrance 620a flows into the first plate heat exchanger 620, and via the refrigerant outlet 620b of the first plate heat exchanger 620 outflow the One plate heat exchanger 620.In this way, the heat that refrigerant and battery coolant liquid may be implemented is handed over by the first plate heat exchanger 620 It changes, to be cooled down for battery pack.
As above, compressor 604 is damaged to prevent liquid refrigerant from entering compressor 604, so as to extend compression The service life of machine 604, and the efficiency of entire heat pump air conditioning system is improved, gas-liquid separator is provided in heat pump air conditioning system 611.As shown in Figure 6 and Figure 7, the entrance of gas-liquid separator 611 in addition to indoor evaporator 602 outlet and third switch valve Except 610 connections, the refrigerant outlet 620b of the first plate heat exchanger 620 is via battery cooling for reflux branch and gas-liquid separator 611 entrance connection.In other words, gas-liquid point can also be first passed around from the liquid refrigerant that the first plate heat exchanger 620 comes out Gas-liquid separation is carried out from device 611, the gas isolated is flowed back into again in compressor 604, to prevent liquid refrigerant from entering Compressor 604 and damage compressor 604.
In addition, as shown in Figure 6 and Figure 7, engine-cooling system may include the second water pump 641, engine 642, interior Heater cores 643 (being arranged in HVAC 600) and the first triple valve 644, wherein the outlet and the first threeway of the second water pump 641 The entrance 644a of valve 644 is connected to, two outlets (that is, second outlet 644c and first outlet 644b) point of the first triple valve 644 It is not connected to the engine coolant entrance 620c of the entrance of indoor heater cores 643 and the first plate heat exchanger 620, interior is warm The coolant liquid of the outlet of wind core 643 and the engine coolant outlet 620d of the first plate heat exchanger 620 with engine 642 Entrance connection, the cooling liquid outlet of engine 642 are connected to the entrance of the second water pump 641.
When opening the second water pump 641, the entrance 644a of the first triple valve 644 of conducting goes out with the first of the first triple valve 644 When mouth 644b, engine coolant can flow into first via the engine coolant entrance 620c of the first plate heat exchanger 620 Plate heat exchanger 620, and the first plate heat exchanger is flowed out via the engine coolant of the first plate heat exchanger 620 outlet 620d 620.In this way, the waste heat that can use engine 642 is that battery pack is heated.Further, it is also possible to pass through the first threeway of conducting The second outlet 644c of the entrance 644a of valve 644 and the first triple valve 644, so that engine coolant flows into indoor heater cores 643, to realize that using engine exhaust heat be interior heating.
There is the situation of waste heat deficiency in engine 642 in order to prevent, in another embodiment of the present invention, such as Fig. 8 institute Show, engine-cooling system can also include the first ptc heater 645 and the second triple valve 646, wherein indoor heater cores 643 outlet and the engine coolant of the first plate heat exchanger 620 export entrance of the 620d with second triple valve 646 646a connection, the first outlet 646b of second triple valve 646 is connected to the coolant inlet of the engine 642, described The second outlet 646c of second triple valve 646 is connected to the entrance of second water pump 641, and first ptc heater 645 can Be arranged in as shown in Figure 8 second water pump 641 outlet and first triple valve 644 entrance 644a it Between, or can be arranged in as shown in Figure 9 second water pump 641 entrance and second triple valve 646 Between two outlet 646c, thus in parallel with engine 642.As a result, by the first ptc heater 645, it is cold that engine can be improved But the temperature of liquid, and then preferably heated for battery pack.
It will carry out heat pump air conditioning system that the present invention is described in detail provides by taking Fig. 8 as an example under different working modes below Cyclic process and principle.It should be understood that the system circulation under other embodiments (for example, embodiment shown in Fig. 9) Process and principle with Fig. 8 be it is similar, just no longer repeat one by one herein.
Mode one: heat pump high-temperature refrigeration circulation pattern.System in this mode when, whole system formed a high temperature Cooling cycle system.As shown in figure 8, 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, comes out at this time from indoor condenser 601 Still be high temperature and pressure gas.The indoor outlet of condenser 601 is connected with expansion switch valve 603, expands switch valve 603 at this time and rises Valve action is switched, is only flowed through as runner, what is come out at this time from expansion switch valve 603 is still the gas of high temperature and pressure.It 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, it is out the liquid of medium temperature high pressure from outdoor heat exchanger 605.At this point, third switch valve 610 is closed, the first expansion valve 621 It closes, the outlet of outdoor heat exchanger 605 is connected with third expansion valve 609, and third expansion valve 609 plays throttling as restricting element and makees With coming out is low temperature and low pressure liquid.609 aperture of third expansion valve can give certain aperture according to actual needs, this Aperture can be sensed according to the pressure-temperature between the entrance for the outlet and gas-liquid separator 611 for being mounted on indoor evaporator 602 The pressure and temperature acquisition data of device calculate indoor evaporator 602 and export refrigerant superheat degree to adjust.Third expansion valve 609 goes out Mouthful it is connected with the entrance of indoor evaporator 602, low temperature and low pressure liquid is evaporated in evaporator 602 indoors, so that from interior Evaporator 602 is the gas of low-temp low-pressure out.The outlet of indoor evaporator 602 is connected with the entrance of second one-way valve 615, The outlet of second one-way valve 615 is connected with the entrance of gas-liquid separator 611, and the liquid not being evaporated is passed through gas-liquid separator 611 separation, the gas of last low-temp low-pressure return in compressor 604, and a circulation is consequently formed.At this time in HVAC assembly 600 Wind flows only through indoor evaporator 602, and the calm process of indoor condenser 601 is only flowed through as refrigerant flow path.Also, at this Under mode, the first water pump 624 is closed, and the second water pump 641 is closed, the first triple valve 644 and the power-off of the second triple valve 646, that is, close It closes.
Mode two: battery cooling cycle mode.System in this mode when, battery pack heat-exchange system formed an electricity Pond packet cooling recirculation system.As shown in figure 8, gas of the compressor 604 through overcompression discharge high temperature and pressure, 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 expansion switch valve 603, expands switch valve 603 at this time and plays switch Valve action is only flowed through as runner, and expanding the outlet of switch valve 603 at this time still is the gas of high temperature and pressure.Expansion switch valve 603 goes out Mouth is connected with outdoor heat exchanger 605, and outdoor heat exchanger 605 and outdoor air exchange heat, and heat is dispersed into air, outdoor heat exchange The outlet of device 605 is the liquid of medium temperature high pressure.At this point, third switch valve 610 is closed, third expansion valve 609 is closed, outdoor heat exchanger 605 outlets are connected with the first expansion valve 621, and the first expansion valve 621 plays throttling action as restricting element, and outlet is low temperature Low pressure liquid.First expansion valve, 621 aperture can give certain aperture according to actual needs, this aperture can be according to being mounted on The pressure and temperature of pressure-temperature sensor between the outlet of first plate heat exchanger 620 and the entrance of gas-liquid separator 611 Acquisition data calculate refrigerant superheat degree to adjust.First expansion valve 621 is exported to be entered with the refrigerant of the first plate heat exchanger 620 Mouth is connected, and low temperature and low pressure liquid exchanges heat in the first plate heat exchanger 620 with the hot water come out from battery pack 622, so that The refrigerant outlet of first plate heat exchanger 620 is the gas of low-temp low-pressure.The refrigerant outlet of first plate heat exchanger 620 with The entrance of first check valve 628 is connected, and the outlet of the first check valve 628 is connected with the entrance of gas-liquid separator 611, not evaporating Complete liquid is separated by gas-liquid separator 611, and the gas of last low-temp low-pressure returns in compressor 604, is consequently formed one Circulation.The flow direction of 600 apoplexy of HVAC assembly flows only through indoor evaporator 602 at this time, and the calm process of indoor condenser 601 is only made It is flowed through for refrigerant flow path.Also, in this mode, the first water pump 624 is opened, and the second water pump 641 is closed, the first triple valve 644 and second triple valve 646 power off.
Mode three: heat pump high-temperature refrigeration is powered on pond cooling cycle mode.System in this mode when, whole system shape At a high-temperature refrigeration while battery cooling recirculation system.As shown in figure 8, firstly, compressor 604 is high through overcompression discharge high temperature The gas of pressure is connected with indoor condenser 601.At this point, wind is controlled without indoor condenser 601 by air door mechanism, due to Therefore calm process not will do it heat exchange in condenser 601 indoors, which only uses as runner, 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 expansion switch valve 603, Expansion switch valve 603 plays switch valve action at this time, only flows through as runner, and it is still high for high temperature to expand the outlet of switch valve 603 at this time The gas of pressure.The outlet of expansion switch valve 603 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.At this point, third switch valve 610 is closed, the One expansion valve 621 and third expansion valve 609 are opened, and the outlet of outdoor heat exchanger 605 is expanded with third expansion valve 609 and first respectively Valve 621 is connected.At this point, the liquid of the medium temperature high pressure come out from outdoor heat exchanger 605 is divided into two strands: one flows to third expansion valve 609 entrance, third expansion valve 609 play throttling action as restricting element, and outlet is low temperature and low pressure liquid.Third expansion 609 aperture of valve can give certain aperture according to actual needs, this aperture can be according to being mounted on going out for indoor evaporator 602 The pressure and temperature acquisition data of pressure-temperature sensor between mouth and the entrance of gas-liquid separator 611 calculate indoor evaporation Device 602 exports refrigerant superheat degree to adjust.The outlet of third expansion valve 609 is connected with the entrance of indoor evaporator 602, and low temperature is low Press liquid is evaporated in evaporator 602 indoors, so that the outlet of indoor evaporator 602 is the gas of low-temp low-pressure, indoor steaming The outlet of hair device 602 is connected with the entrance of second one-way valve 615.Entrance of another plume to the first expansion valve 621, the first expansion The aperture of valve 621 can give certain aperture according to actual needs, this aperture can be according to the system of the first plate heat exchanger 620 The pressure and temperature acquisition data of pressure-temperature sensor between cryogen outlet and the entrance of gas-liquid separator 611, which calculate, to be made The cryogen degree of superheat is adjusted.First expansion valve 621 plays throttling action as restricting element, and outlet is low temperature and low pressure liquid. 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 board-like is changed first Heat exchange is carried out with the hot water come out from battery pack 622 in hot device 620, so that the refrigerant outlet of the first plate heat exchanger 620 For the gas of low-temp low-pressure, the refrigerant outlet of the first plate heat exchanger 620 is connected with the first check valve 628.Second one-way valve 615 outlet and the outlet of the first check valve 628 are connected with gas-liquid separator 611 respectively, go out from the outlet of the first check valve 628 The refrigerant that the refrigerant come comes out with the outlet from the first check valve 628 converges, and the liquid not being evaporated is passed through gas-liquid point It is separated from device 611, the gas of last low-temp low-pressure returns in compressor 604, and a circulation is consequently formed.HVAC assembly at this time The flow direction of 600 apoplexy flows only through indoor evaporator 602, and the calm process of indoor condenser 601 is only flowed through as refrigerant flow path. Also, in this mode, the first water pump 624 is opened, and the second water pump 641 is closed, the first triple valve 644 and the second triple valve 646 Power-off.
Mode four: heat pump low-temperature heating circulation pattern.System in this mode when, whole system formed a low temperature Heating recycle system.As shown in figure 8, firstly, the gas of high temperature and pressure is discharged through overcompression for compressor 604, with indoor condenser 601 are connected, at this point, indoor condenser 601 has a wind process, the gas of high temperature and pressure is condensed in condenser 601 indoors, make Obtain the liquid that the indoor outlet of condenser 601 is medium temperature high pressure.The indoor outlet of condenser 601 is connected with expansion switch valve 603, at this time Expansion switch valve 603 plays expansion valve, plays throttling action as restricting element, outlet is the liquid of low-temp low-pressure. Wherein, the aperture for expanding switch valve 603 can give certain aperture according to actual needs, this aperture can be pressed according to being mounted on The number of the temperature acquisition data (i.e. compressor exhaust temperature) of the pressure-temperature sensor in the exit of contracting machine 604 is adjusted. The outlet of expansion switch valve 603 is connected with the entrance of outdoor heat exchanger 605, and outdoor heat exchanger 605 absorbs the heat of outdoor air, room The outlet of external heat exchanger 605 is the gas of low-temp low-pressure.At this point, third switch valve 610 is opened, third expansion valve 609 is closed, first Expansion valve 621 is closed, and refrigerant is directly entered in gas-liquid separator 611 without indoor evaporator 602, the liquid not being evaporated It 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.And And in this mode, the first water pump 624 is closed, and the second water pump 641 is closed, and the first triple valve 644 and the second triple valve 646 are disconnected Electricity.
Mode five: engine low temperature heats circulation pattern.As shown in figure 8, the high temperature coolant warp come out from engine 642 The second water pump 641, the first ptc heater 645, the entrance 644a of the first triple valve 644, second outlet 644c are crossed, using room Interior heater cores 643 carry out the coolant liquid that heat exchange cooling is low temperature with air, using the entrance of the second triple valve 646 646a- second outlet 646b is flowed back into engine 642, thus completes a circulation.In this mode, compressor 604, expansion Switch valve 603, third expansion valve 609, the first expansion valve 621 are all in off-position, and the first water pump 624 is closed, the second water pump The entrance 644a- second outlet 644c of 641 operations, the first triple valve 644 is logical, and entrance 644a- first outlet 644b is obstructed, and second Entrance -646a first outlet the 646b of triple valve 646 is logical, and entrance 646a- second outlet 646c is obstructed.
Six: PTC mode battery heat cycles mode of mode.As shown in figure 8, the high temperature come out from the first ptc heater 645 Coolant liquid passes through entrance 644a, the first outlet 644b of the first triple valve 644, the first plate heat exchanger 620 is flowed to, with battery pack 622 cold water come out carry out the coolant liquid that heat exchange cooling is low temperature, using the entrance 646a- second of the second triple valve 646 646c is exported, flows back into the first ptc heater 645 by the second water pump 641, thus completes a circulation.It is board-like by first Heat exchanger 620 can be that battery pack is heated using engine coolant, increase the temperature of battery pack.In this mode, it presses Contracting machine 604, expansion switch valve 603, third expansion valve 609, the first expansion valve 621 are all in off-position, the first water pump 624 fortune The entrance 644a- first outlet 644b of row, the operation of the second water pump 641, the first triple valve 644 is logical, entrance 644a- second outlet 644c is obstructed, and the entrance 646a- second outlet 646c of the second triple valve 646 is logical, and entrance 646a- first outlet 646b is obstructed.
Mode seven: engine mode battery heat cycles mode.As shown in figure 8, the High-temperature cooling come out from engine 642 Liquid flows to the first plate heat exchanger 620 by the second water pump 641, the entrance 644a- first outlet 644b of the first triple valve 644, The coolant liquid that heat exchange cooling is low temperature is carried out with the cold water that battery pack 622 comes out, using the entrance of the second triple valve 646 646a- first outlet 646b is flow back into engine 642, is thus completed engine mode battery and is heated a circulation.In the mould Under formula, compressor 604, expansion switch valve 603, third expansion valve 606, the first expansion valve 621 are all in off-position, the first water 624 operation of pump, the operation of the second water pump 646, the entrance 644a- first outlet 644b of the first triple valve 644 is logical, entrance 644a- the Two outlet 644c are obstructed, and the entrance 646a- first outlet 646b of the second triple valve 646 is logical, and entrance 646a- second outlet 646c is not It is logical.
Eight: PTC mode low temperature of mode heating power-up pond heat cycles mode.As shown in figure 8, from the first ptc heater 645 High temperature coolant out flows to the first triple valve 644, punishes and flows in the first triple valve 644, passes through the first triple valve 644 all the way Entrance 644a- first outlet 644b to the first plate heat exchanger 620, carry out heat exchange drop with the cold water that battery pack 622 comes out Temperature be low temperature coolant liquid, another way by the first triple valve 644 entrance 644a- second outlet 644c to interior heater cores 643 carry out the coolant liquid that heat exchange cooling is low temperature with air, export from the engine coolant of the first plate heat exchanger 620 The refrigerant that 620d and indoor heater cores 643 flow out flows back to the second triple valve 646 together again, then from the second triple valve 646 Entrance 646a- second outlet 646c flow back into the first ptc heater 645 by the second water pump 641, thus completes a PTC mould Formula low-temperature heating is powered on pond heat cycles.In this mode, compressor 604, expansion switch valve 603, third expansion valve 609, the One expansion valve 621 is all in off-position, the operation of the first water pump 624, the operation of the second water pump 641, the entrance of the first triple valve 644 644a- first outlet 644b is logical, and entrance 644a- second outlet 644c is logical, the entrance 646a- first outlet of the second triple valve 646 646b is obstructed, and entrance 646a- second outlet 646c is logical.
Mode nine: engine mode low-temperature heating is powered on pond heat cycles mode.As shown in figure 8, being come out from engine 642 High temperature coolant by the second water pump 641, the first triple valve 644 punish flow, all the way pass through the first triple valve 644 entrance For 644a- first outlet 644b to the first plate heat exchanger 620, it is low for carrying out heat exchange cooling with the cold water that battery pack 622 comes out The coolant liquid of temperature, another way by the entrance 644a- second outlet 644c of the first triple valve 644 arrive indoor heater cores 643 and Air carry out heat exchange cooling be low temperature coolant liquid, from the engine coolant of the first plate heat exchanger 620 outlet 620d and The refrigerant that indoor heater cores 643 flow out flows back to the second triple valve 646, then the entrance from the second triple valve 646 together again 646a- first outlet 646b is flow back into engine 642, is thus completed an engine mode low-temperature heating power-up pond heating and is followed Ring.In this mode, compressor 604, expansion switch valve 603, third expansion valve 609, the first expansion valve 621 are all in power-off shape The entrance 644a- first outlet 644b of state, the operation of the first water pump 624, the operation of the second water pump 646, the first triple valve 644 is logical, enters Mouth 644a- second outlet 644c is logical, and the entrance 646a- first outlet 646b of the second triple valve 646 is logical, and entrance 646a- second goes out Mouth 646c is obstructed.
To sum up, automotive thermal tube provided by the invention manages system, realizes interior summer in addition to can use heat pump air conditioning system Refrigeration and the demand of winter heating, there are also the functions of battery cooling and battery heating.By the first plate heat exchanger, can pass through The refrigerant and battery pack coolant liquid of heat pump air conditioning system carry out heat exchange, cool down to battery, and can pass through the cooling of engine Liquid and battery pack coolant liquid carry out heat exchange, heat to battery, using the heat exchange between three kinds of media, are suitable for different vehicle conditions Under effective use to the energy, so that battery is worked within the scope of suitable temperature always, thus improve the efficiency for charge-discharge of battery, Cruising ability and service life.In addition, the present invention can both realize air conditioning for automobiles in the case where not changing refrigerant circulation direction The refrigeration and heating of system, structure is simple, so that whole system pipeline arrangement is simple, is easy to produce in batches.
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 10, 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 Figure 10 to Figure 15, valve body 500 includes shape Valve seat 510 at inner flow passage and the first valve casing 511 and the second valve casing 512 that are mounted on the valve seat 510, the first valve casing 511 The first electromagnetic drive part 521 for driving the first spool 503 is inside installed, is equipped in the second valve casing 512 for driving the Second electromagnetic drive part 522 of two spools 504, the first spool 503 extend to the inside stream in valve seat 510 from the first valve casing 511 Road, the second spool 504 extend 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 a kind of typical internal structure of expansion switch valve, as shown in Figure 10 to Figure 13, inner flow passage includes difference The first runner 506 and second flow channel 507 being connected to import 501, are formed on first runner 506 and the first spool 503 cooperates The first valve port 516, restriction 505 be formed in second flow channel 507 be formed as with the second spool 504 cooperate the second valve port 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 14, 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 17 to Figure 18, import 501 and 502 phases of outlet Mutually vertically it is provided on valve body 500.In this way, as shown in Figure 15 to Figure 17, 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 13 and Figure 14, 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 16, 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 13 and Figure 14, 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 13, 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 14 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 13, Figure 16 and Figure 19, 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 13 and Figure 15 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 14 and Figure 20, 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 14 and Figure 20, 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 11, Tu17He Shown in Figure 18, 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 cars, including the above-mentioned heat pump air conditioning system provided according to the present invention.Wherein, should Electric car may include pure electric automobile, hybrid vehicle, fuel cell car.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally The thought of invention, it should also be regarded as the disclosure of the present invention.

Claims (18)

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, engine-cooling system and the first plate heat exchanger (620), the heat pump air conditioning system and the engine cool System is exchanged heat by first plate heat exchanger (620) and the battery pack heat-exchange system respectively, the heat pump air conditioning system Including compressor (604), indoor condenser (601), indoor evaporator (602) and outdoor heat exchanger (605), the compressor (604) outlet is connected to the entrance of the indoor condenser (601), the egress selection of the interior condenser (601) It is connected to via first throttle branch or the first through-flow branch with the entrance of the outdoor heat exchanger (605), the outdoor heat exchanger (605) it is connected to via the second through-flow branch with the entrance of the compressor (604) to egress selection or via the second throttling Branch is connected to the entrance of the indoor evaporator (602), the outlet of the indoor evaporator (602) and the compressor (604) entrance connection, the refrigerant inlet (620a) of first plate heat exchanger (620) is via selective on or off The cooling branch of battery be connected to the entrance of the outlet of the outdoor heat exchanger (605) or the indoor evaporator (602), it is described The refrigerant outlet (620b) of first plate heat exchanger (620) is via battery cooling for reflux branch and the compressor (604) Entrance connection.
2. automotive thermal tube according to claim 1 manages system, which is characterized in that first plate heat exchanger (620) The battery cooling branch and the outdoor heat exchanger (605) of the refrigerant inlet (620a) via selective on or off Outlet, the cooling branch road of the battery are provided with the first expansion valve (621).
3. automotive thermal tube according to claim 1 manages system, which is characterized in that the automotive thermal tube reason system further includes the One switch valve (626), the second throttling branch is via the first switch valve (626) and the indoor evaporator (602) Entrance connection, the refrigerant inlet (620a) of first plate heat exchanger (620) via selective on or off battery Cooling branch is connected to the entrance of the first switch valve (626), and is provided with flow valve on the cooling branch road of the battery (627)。
4. 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 the first check valve (628).
5. automotive thermal tube according to claim 1 manages system, which is characterized in that the first plate heat exchanger (620) string It is associated in the coolant circuit of the battery pack heat-exchange system, and is additionally provided in the coolant circuit and first plate Concatenated first water pump (624) of formula heat exchanger (620), deputy tank (625) and battery pack (622).
6. automotive thermal tube according to claim 1 manages system, which is characterized in that the engine-cooling system includes second Water pump (641), engine (642), indoor heater cores (643) and the first triple valve (644), second water pump (641) Outlet is connected to the entrance (644a) of first triple valve (644), two of first triple valve (644) export (644b, 644c) respectively with the engine coolant entrance (620c) of first plate heat exchanger (620) and the indoor heater cores (643) entrance connection, the outlet of the interior heater cores (643) and the engine of first plate heat exchanger (620) Cooling liquid outlet (620d) is connected to the coolant inlet of the engine (642), and the coolant liquid of the engine (642) goes out Mouth is connected to the entrance of second water pump (641).
7. automotive thermal tube according to claim 6 manages system, which is characterized in that the engine-cooling system further includes the One ptc heater (645) and the second triple valve (646), the outlet of the interior heater cores (643) and described first board-like are changed The engine coolant outlet (620d) of hot device (620) is connected to the entrance (646a) of second triple valve (646), described The first outlet (646b) of second triple valve (646) is connected to the coolant inlet of the engine (642), second threeway The second outlet (646c) of valve (646) is connected to the entrance of second water pump (641), and first ptc heater (645) sets It sets between the outlet of second water pump (641) and the entrance (644a) of first triple valve (644), or is arranged in institute It states between the entrance of the second water pump (641) and the second outlet (646c) of second triple valve (646).
8. automotive thermal tube according to claim 1 manages system, which is characterized in that the first through-flow branch road is provided with the Two switch valves (608), the first throttle branch road are provided with the second expansion valve (607).
9. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system further includes expansion Switch valve (603), the outlet of the entrance of the expansion switch valve (603) and the indoor condenser (601), expansion switch The outlet of valve (603) is connected to the entrance of the outdoor heat exchanger (605), and the first throttle branch is the expansion switch valve (603) throttling runner, the first through-flow branch are the through-flow runner of expansion switch valve (603).
10. automotive thermal tube according to claim 1 manages system, which is characterized in that the second through-flow branch road is provided with Third switch valve (610), the second throttling branch road are provided with third expansion valve (609).
11. 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 second one-way valve (615) with the entrance of the compressor (604).
12. automotive thermal tube according to claim 1 manages system, which is characterized in that the heat pump air conditioning system is applied to electricity Electrical automobile, the second through-flow branch road are additionally provided with the second plate heat exchanger (612), and second plate heat exchanger (612) is same When be arranged in the electromotor cooling system of the electric car.
13. automotive thermal tube according to claim 12 manages system, which is characterized in that the second through-flow branch road is provided with Third switch valve (610), the refrigerant inlet (612a) and the outdoor heat exchanger of second plate heat exchanger (612) (605) outlet, the refrigerant outlet (612b) and the third switch valve of second plate heat exchanger (612) (610) entrance connection.
14. automotive thermal tube according to claim 12 manages system, which is characterized in that the electromotor cooling system includes and institute State motor, motor radiator (613) and third water pump (614) that the second plate heat exchanger (612) connect to be 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 gas The outlet of liquid/gas separator (611), the indoor evaporator (602) is connected to the entrance of the gas-liquid separator (611), the room The outlet of external heat exchanger (605) is connected to via the described second through-flow branch with the entrance of the gas-liquid separator (611), and described The refrigerant outlet (620b) of one plate heat exchanger (620) is via the battery cooling for reflux branch and the gas-liquid separator (611) entrance connection, the outlet of the gas-liquid separator (611) is connected to the entrance of the compressor (604).
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 ptc heaters (619), second ptc heater (619) are used to heat the wind for flowing through the indoor condenser (601).
17. automotive thermal tube according to claim 16 manages system, which is characterized in that second ptc heater (619) sets Set the windward side or leeward side in the indoor condenser (601).
18. a kind of electric car, which is characterized in that managed including automotive thermal tube described according to claim 1 any one of -17 System.
CN201610309706.5A 2016-05-10 2016-05-10 Automotive thermal tube manages system and electric car Active CN107351633B (en)

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