CN103158486B - A kind of automotive air-conditioning system - Google Patents
A kind of automotive air-conditioning system Download PDFInfo
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- CN103158486B CN103158486B CN201110424067.4A CN201110424067A CN103158486B CN 103158486 B CN103158486 B CN 103158486B CN 201110424067 A CN201110424067 A CN 201110424067A CN 103158486 B CN103158486 B CN 103158486B
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Abstract
A kind of automotive air-conditioning system, the heat pump comprising heat generating components temperature control loop with there is refrigerant circulation circuit, both carry out heat exchange by double flow duct heat exchanger; Described automotive air-conditioning system has: refrigeration mode, heating mode, except mist pattern, battery pre-warm pattern totally four kinds of operating mode; Heat pump comprises compressor, vapour liquid separator, well heater and water cooler, external heat exchanger, throttling assembly; Described well heater and water cooler carry out heat supply, cooling or remove mist to described compartment according to the operating mode demand in compartment; Refrigerant from compressor out after first lead to described well heater, can select whether to carry out heat exchange, and then flow to external heat exchanger at well heater. The refrigerant that the described well heater of described heat pump only becomes popular, and cold refrigerant only walked by described water cooler, to avoid thermal shock, thus improves work-ing life.
Description
Technical field
The present invention relates to automobile air conditioning technology field, in particular to a kind of electric automobile air-conditioning system.
Background technology
Along with the development of low-carbon economy, energy-saving and emission-reduction proposing stricter requirement, electromobile, owing to there being energy-conserving and environment-protective, becomes one of development of automobile aspect from now on. But electromobile is owing to using battery as power resources, and its air-conditioning system is also different from original automotive air-conditioning system.
Along with improving constantly of quality of the life, comfort level in automobile bodies is also more and more subject to people's attention, traditional internal combustion engine type automobile, the waste heat of oil engine and the heat of engine exhaust can be utilized to carry out vehicle cabin, and the power of electromobile mainly comes from motor, the heat having lacked engine can utilize, thus is difficult to reach the heating requirement in winter. In prior art, in order to the temperature in the compartment realizing electromobile remains on the comfortable temperature of human body sensory, the multiple mode that have employed having heats in compartment, as adopted independent thermal source, namely utilizes PTC to heat; Or utilize the fuel heating such as gasoline, kerosene, ethanol; Also the employing recovery system waste heat having, more auxiliary employing independent thermal source; The employing heat pump also having ensures temperature in compartment etc.
But, in above-mentioned various type of heating, according to independent thermal source, such as: pure use PTC heats, then need the energy consuming more battery, and then can reduce the actual service life of automobile; According to fuel heating, not only heating efficiency is lower, but also can produce to pollute to environment, can increase the load of automobile simultaneously. In addition, except blowing out cold wind in compartment during mist in current automative air conditioning, that can cause in compartment when weather is relatively cold is uncomfortable.
So at present, what the technician of this area needed to solve at present has following technical problem: electric automobile air-conditioning system is run under round-the-clock complicated weather, with the comfort level ensured in car; Heat generating components (such as motor inverter, battery etc.) how is made to work in normal temperature range in addition, to keep relatively high efficiency; The optimization of the cost performance (initial cost, running cost and performance) of refrigeration system can be ensured.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of electric automobile air-conditioning system, comprises heat pump, electric automobile air-conditioning system is run under round-the-clock complicated weather, to ensure comfort level relative in car; Simultaneously heat generating components (such as motor inverter, battery etc.) how is made to work in normal temperature range, to keep relatively high efficiency. The present invention is by the following technical solutions:
A kind of automotive air-conditioning system, the heat pump comprising heat generating components temperature control loop and there is refrigerant circulation circuit, wherein refrigerant circulation circuit and heat generating components temperature control loop carry out heat exchange by double flow duct heat exchanger, the first flow of described double flow duct heat exchanger is connected with refrigerant circulation circuit, and the second road of double flow duct heat exchanger is connected with heat generating components temperature control loop; Described automotive air-conditioning system has: refrigeration mode, heating mode, except mist pattern, battery pre-warm pattern totally four kinds of operating mode; Described heat pump comprises compressor, be positioned at compressor inlet before vapour liquid separator, arrange respectively the well heater of heat is provided to compartment and the water cooler of cold, the external heat exchanger being positioned at outside compartment and throttling assembly is provided to compartment; Described well heater and water cooler carry out heat supply, cooling or remove mist to described compartment according to the operating mode demand in compartment; Described well heater and external heat exchanger can be selected to carry out heat exchange; The refrigerant that the described well heater of described heat pump only becomes popular, and cold refrigerant only walked by described water cooler, to avoid thermal shock; Refrigerant from compressor out after first lead to described well heater, the pipeline of described heater outlet is also provided with three-way solenoid valve, an interface of three-way solenoid valve directly or indirectly leads to external heat exchanger, and another one interface directly or indirectly leads to the first flow of double flow duct heat exchanger.
Preferably, in the refrigerant circulation circuit of described heat pump, first flow for described double flow duct heat exchanger is provided with the 2nd bypass flow path, the junction of the first flow and described 2nd bypass flow path that are provided with solenoid electric valve or described double flow duct heat exchanger in described 2nd bypass flow path is provided with solenoid electric valve, to control the flow of the refrigerant by double flow duct heat exchanger first flow, ensure the temperature controlled requirement for Heating element further.
Preferably, in the refrigerant circulation circuit of described heat pump, for the bypass passageways providing the described water cooler of cold to be provided with a refrigerant in compartment, conducting when described bypass passageways runs heating mode or battery pre-warm pattern at heat pump.
Preferably, the refrigerant circulation circuit of described heat pump comprises the 2nd three-way solenoid valve, 2nd three-way solenoid valve is arranged in the pipeline between water cooler and double flow duct heat exchanger, and it can optionally control the conducting leading to the stream road of described water cooler or the described bypass passageways of described water cooler.
Preferably, described double flow duct heat exchanger is plate-type heat exchanger.
Preferably, the storage amount of the refrigerant liquid in described vapour liquid separator is the 20-40% of described heat pump coolant injection amount.
Preferably, described throttling assembly is electric expansion valve or thermal expansion valve.
Preferably, described automotive air-conditioning system also comprises the blower fan for air-supply in compartment, and when described heat pump is in except mist pattern, the wind that described blower fan is sent first is dehumidified by described water cooler, then by being sent in compartment after well heater; Described well heater can optionally to the wind after dehumidifying to carry out heating or not heating according to the operating mode in compartment, with the comfort level ensured in compartment.
Preferably, the blast inlet at described well heater is provided with the first air door, the first air door can step-less adjustment, regulating thus realize the regulating and controlling of the ratio by the air quantity of well heater by described first air door;
Preferably, described automotive air-conditioning system is also provided with ptc heater in described compartment, when heating mode by the temperature of optionally ptc heater described in open and close to control in compartment, and it is first by well heater, blow by described ptc heater and then in compartment again to the wind in described compartment.
Preferably, the refrigerant circulation circuit of described heat pump also comprises the 3rd bypass flow path of external heat exchanger described in a bypass, when system is for during except mist pattern and heating mode, it is possible to optionally the 3rd bypass flow path described in conducting.
Compared with prior art, the present invention has the following advantages: the air-conditioning system of the present invention is by arranging battery pre-warm pattern, can avoid that the temperature of environment for use is too low to have an impact on battery life and affect the problem of actual service life, when automobilism is snowed heavily as in exceedingly odious sky in the situation that temperature is relatively low, at this moment the envrionment temperature of battery periphery is well below normal working temperature, like this when starting to start automobile, just can carry out pre-warm to elements such as batteries, it is made to be rapidly heated, to ensure the work-ing life of battery and to ensure actual service life. The air-conditioning system of simultaneously the present invention, is provided with water cooler and well heater in compartment, and both are arranged respectively, it is possible to avoid the impact of high/low temperature in interchanger, to improve interchanger work-ing life; And during except mist pattern, heater and water cooler simultaneously, it is achieved the effect dehumidifying and heating, ensures the humiture in compartment, thus meets the comfort requirement in compartment simultaneously.
Accompanying drawing explanation
Fig. 1 is the pipeline connection diagram of the first embodiment of the present invention when refrigeration mode;
Fig. 2 is the pipeline connection diagram of the first embodiment of the present invention when heating mode;
Fig. 3 is that the first embodiment of the present invention is except pipeline connection diagram during mist pattern;
Fig. 4 is the pipeline connection diagram of the first embodiment of the present invention when the pre-dim pattern of battery;
Fig. 5 is that the first embodiment of the present invention is at the wet schematic diagram of enthalpy except dehumidifying during mist pattern;
Fig. 6 is the pipeline connection diagram of the present invention's the 2nd kind of embodiment.
Embodiment
For enabling above-mentioned purpose, the feature and advantage of the present invention more become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.
The air-conditioning system of the present invention has: refrigeration mode, heating mode, except mist pattern, battery pre-warm pattern totally four kinds of operating mode. The first embodiment of the present invention is as Figure 1-Figure 5, wherein Fig. 1 is the pipeline connection diagram of the first embodiment of the present invention when refrigeration mode, Fig. 2 is the pipeline connection diagram of the first embodiment of the present invention when heating mode, Fig. 3 is that the first embodiment of the present invention is except pipeline connection diagram during mist pattern, Fig. 4 is the pipeline connection diagram of the first embodiment of the present invention when the pre-dim pattern of battery, and Fig. 5 is the enthalpy wet schematic diagram of the first embodiment of the present invention when dehumidifying. Wherein the dotted line in figure represents that this place's pipeline is cut off not conducting.
As shown in Figure 1, air-conditioning system comprises the heat pump with refrigerant circulation circuit and heat generating components temperature control loop, wherein carry out heat exchange by a double flow duct heat exchanger 16 between refrigerant circulation circuit with heat generating components temperature control loop: the first flow of double flow duct heat exchanger 16 is connected with refrigerant circulation circuit, the second road of double flow duct heat exchanger 16 is connected with heat generating components temperature control loop, and refrigerant circulation circuit and heat generating components temperature control loop can carry out heat exchange at double flow duct heat exchanger 16.Heat pump comprises compressor 10, be positioned at compressor inlet before vapour liquid separator 11, arrange respectively the well heater 18 of heat is provided to compartment and the water cooler 17 of cold, the external heat exchanger 13 being positioned at outside compartment, throttling assembly is provided to compartment; Well heater 18 and water cooler 17 in described compartment can be selected to carry out heat supply, cooling to described compartment or remove mist according to the operating mode demand in compartment. Well heater 18 and water cooler 17 are blown in compartment by pipeline outside can being arranged in compartment can also to be arranged at compartment.
Heat pump also comprises control valve part and the pipeline connecting parts of pilot piping refrigerant flowing, specifically, comprising the three-way solenoid valve 124 being arranged between well heater 18 and external heat exchanger 13, three-way solenoid valve 124 also has an interface to be connected to one end of double flow duct heat exchanger 16; In addition pipeline between three-way solenoid valve 124 and external heat exchanger 13 is provided with triplate line part 121, another interface of triplate line part 121 is connected with magnetic valve 122, another interface of magnetic valve 122 is connected with triplate line part 123, and another two interfaces of triplate line part 123 are connected with the import of vapour liquid separator 11, the outlet of water cooler 17 respectively.
When needing refrigeration in car summer, the refrigerant circulation circuit of heat pump switches to refrigeration mode, and in cooling mode, the first air door 25 aperture making well heater 18 is zero, allows air channel bypass, does not allow wind through well heater 18. when High Temperature High Pressure gaseous coolant from compressor 10 out, when well heater 18, owing to now there is no wind process, so, the refrigerant through well heater can not produce heat exchange with air, magnetic valve 122 cuts out in addition, refrigerant is through three-way solenoid valve 124, arrive triplate line part 121 again, arrive external heat exchanger 13 again, heat exchange is carried out with air here, refrigerant is discharged after heat to air, refrigerant is throttled by throttle valve component again, become the refrigerant of low-temp low-pressure, then by double flow duct heat exchanger 16, heat exchange is carried out at double flow duct heat exchanger 16 and heat generating components temperature control loop, to reduce the temperature of battery 21 Heating element such as grade, simultaneously, the water pump 22 of heat generating components temperature control loop starts, the fluid of heat generating components temperature control loop such as water is circulated, the battery of such electromobile, the heat of the heat generating components such as motor inverter 21 just passes to the fluid of heat generating components temperature control loop, and the refrigerant in refrigerant circulation circuit is passed to further by double flow duct heat exchanger 16. namely the heat pump of the present invention is provided with well heater, external heat exchanger two scatterers, it is possible to selectivity carries out heat exchange.
After double flow duct heat exchanger 16, refrigerant flows to interchanger and water cooler 17 inside compartment again, carries out heat exchange here with the air in compartment, draws heat unnecessary in compartment, reaches the object of refrigeration. Refrigerant is after supercooler 17, become the gaseous fluid of low-temp low-pressure or the fluid of low-temp low-pressure gas-liquid two-phase, afterwards, again by returning to gas-liquid separator 11 after triplate line part 32, triplate line part 124, the gaseous coolant (superheat state) of low-temp low-pressure returns to compressor 10, done work by compressor 10, then the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a refrigeration cycle. Throttle valve component can select thermal expansion valve; In addition for ensureing the restriction effect of refrigerant fluid in the present embodiment, throttle valve component preferentially selects electric expansion valve 14.
Due to when refrigeration mode, the heat generating components such as the battery of electromobile, motor inverter need certain cooling degree, is not more low more good; For this reason, double flow duct heat exchanger 16 is also provided with the 2nd bypass flow path, and first flow with double flow duct heat exchanger 16 has been arranged in parallel by-pass line specifically, is provided with solenoid electric valve 15 in by-pass line; Being divided into two-way at the refrigerant fluid after throttle valve component by threeway 31 like this, wherein the first branch road directly flows to water cooler 17 by solenoid electric valve 15 and the 2nd three-way solenoid valve 19; An other road flows to the 2nd three-way solenoid valve 19 together with converging with the first branch road after double flow duct heat exchanger 16 again, then flows to water cooler 17. In addition, in order to ensure the cooling requirements of the heat generating components such as the battery of electromobile, motor inverter, the first branch road after electric expansion valve 14 can also be cut off, specifically form as closed by solenoid electric valve 15, like this, the refrigerant of refrigerant circulation circuit, just all by double flow duct heat exchanger 16, carries out heat exchange here with heat generating components temperature control loop. Specifically, solenoid electric valve 15 cuts out, and opens the water pump 22 that heat generating components temperature control loop is circulated; From electric expansion valve 14 low temperature refrigerant out just all through double flow duct heat exchanger 16. In addition, can also be regulated by the action control of solenoid electric valve 15 by the cold medium flux of double flow duct heat exchanger 16, simultaneously by the discharge of water pump 22 regulation heating parts temperature control loop, it is possible to what conveniently control the heat generating components such as battery uses cold. Like this, by the control of the discharge of water pump 22 and the adjustment of solenoid electric valve 15, it is possible to conveniently control the heat generating components such as battery with cold, it is also possible to the temperature meeting battery controls in the operating temperature range of its better use. That is, it is provided with the 2nd bypass flow path for by the first flow of double flow duct heat exchanger 16, and in the 2nd bypass flow path, solenoid electric valve 15 is set, ensured the flow of the refrigerant by double flow duct heat exchanger 16 by the action control of solenoid electric valve 15, ensure for Heating element such as the temperature controlled requirement of battery 21 further. Specifically double flow duct heat exchanger 16 can be plate-type heat exchanger. In addition, the position that can also arrange threeway 31 or threeway 29 in the junction of the first flow of double flow duct heat exchanger 16 and described 2nd bypass flow path is such as existing figure changes into and arranges a three-way solenoid valve, the flow of the same like this refrigerant that can control the first flow by double flow duct heat exchanger 16, thus reach Heating element such as the temperature controlled requirement of battery 21.
Solenoid electric valve 15 in specification sheets of the present invention has the function that flow control regulates, and is not limited to simple on-off control.
When needing heat in compartment winter, systematic evaluation be heating mode as shown in Figure 2, magnetic valve 122 cuts out, and interface that three-way solenoid valve 124 leads to triplate line part 121 is opened, and another interface is closed; First air door 25 is opened, also can reach maximum such as diagram, avoid wind bypass and without well heater 18, at this moment the flow pattern of refrigerant circulation circuit is as follows: the gaseous coolant of High Temperature High Pressure is from compressor 10 out, through well heater 18, here the air passed through and the gaseous coolant of the High Temperature High Pressure of well heater 18 carry out heat exchange, flow to compartment with the temperature in vehicle cabin after atmosphere temperature rising;And after refrigerant absorbs the cold in air, refrigerant through three-way solenoid valve 124, arrive triplate line part 121 again, arrive external heat exchanger 13 again, refrigerant is throttled by throttle valve component again, become the refrigerant of low-temp low-pressure, then by double flow duct heat exchanger 16, again to the 2nd three-way solenoid valve 19,2nd three-way solenoid valve 19 is closed towards the interface of water cooler 17, another interface is opened, and refrigerant flows to vapour liquid separator 11, returns to compressor 10 again enter triplate line part 32 and triplate line part 123 again from this interface after; Complete a circulation like this. At double flow duct heat exchanger 16, the Heating element such as battery, motor inverter carries out heat exchange heat radiation by heat generating components temperature control loop and refrigerant.
In order to control the flow of refrigerant by double flow duct heat exchanger 16 further, thus ensure the accuracy of temperature control of the Heating element such as battery, motor inverter, also being provided with a bypass passageways as the 2nd bypass flow path for the circulate first flow of refrigerant of double flow duct heat exchanger 16, in present embodiment, the 2nd bypass flow path is provided with solenoid electric valve 15 to carry out the control of this passage by cold medium flux. If making double flow duct heat exchanger 16 circulate the maximum flow of first flow of refrigerant, solenoid electric valve 15 can cut out; Open the water pump 22 of heat generating components temperature control loop circulation simultaneously, thus make from electric expansion valve 14 refrigerant out to carry out the cooling to heat generating components through the first flow of double flow duct heat exchanger 16; After the refrigerant of double flow duct heat exchanger 16 and the fluid of heat generating components temperature control loop circulation carry out heat exchange, export after by a threeway 32 through the 2nd of the 2nd three-way solenoid valve 19 again and lead to vapour liquid separator 11 again, and return to compressor and complete a circulation. At this moment the 2nd three-way solenoid valve 19 leads to the first outlet closedown of water cooler 17, and namely refrigerant is obstructed supercooler 17, namely the 2nd of the 2nd three-way solenoid valve 19 the exports the bypass passageways defining water cooler 17 between threeway 32; Refrigerant first passes through bypass passageways, again by, after vapour liquid separator 11, the gaseous coolant (superheat state) of low-temp low-pressure returns to compressor 10, passes through compressor work, again the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a heat pump cycle; And if when vapour liquid separator 11, have liquid refrigerants, liquid refrigerants will be stored in vapour liquid separator 11, hit to avoid compressor 10 liquid or cross the cold efficiency affecting heat pump.
Like this, for the temperature control of the Heating elements such as battery, controlled discharge and the adjustment of solenoid electric valve 15 by water pump 22, it is possible to conveniently control this part with cold, namely the temperature of battery can be controlled in its operating temperature range being suitable for. Meanwhile, due to external heat exchanger and be not used in cold scattering, therefore this heat pump need not deice mode. In addition, the bypass passageways of water cooler 17 is not limited to mode described above, it can in addition contain realize with two magnetic valves. Also comprising ptc heater 26 in the automotive air-conditioning system of the present invention in addition, carry out system heat only starting heat pump, and in compartment, temperature does not also reach when requiring, ptc heater 26 starts and heats, and reaches comfort level requirement with the temperature ensured in compartment.
When fog on the moisture needing to remove in air or glass, starting except mist pattern, as shown in Figure 3, the first air door 25 can be in partly to be opened or corresponding aperture position. If when needing in addition to remove the fog on glass or steam fast, can directly closing the first air door 25, and by corresponding airduct, directly cold wind be blowed to glass, reach the object removing glass surface mist fast.The flowing of its refrigerant is: from compressor 10 out, through well heater 18, at this moment to the gaseous coolant of High Temperature High Pressure blower fan 24 open, so having wind through well heater 18, refrigerant through well heater 18 can produce heat exchange with air like this, air in heating car; Then refrigerant enters external heat exchanger 13 after three-way solenoid valve 124, here can select as required whether to carry out heat exchange with air, then refrigerant by throttle valve component as electric expansion valve 14 throttles, become the fluid of low-temp low-pressure, through the 2nd three-way solenoid valve 19, then enter water cooler 17; Here, the air in refrigerant and compartment carries out heat exchange, due to the surface temperature of water cooler will be low relative to temperature in compartment many, therefore in the process, if now the dew-point temperature of air is higher than the surface temperature of water cooler, with regard to have moisture on the surface of water cooler condensation and precipitate out and by arrange pipeline discharge, this reduces the content of the water vapor in air in a car compartment and namely reduce relative humidity, thus reach the object removing mist in compartment. Refrigerant is after supercooler, entering vapour liquid separator 11 by pipeline again, the gaseous coolant (saturated or superheat state) of low-temp low-pressure returns to compressor 10, is done work by compressor 10, again the gaseous coolant of low-temp low-pressure is become the gaseous coolant of High Temperature High Pressure, form a circulation. And the wind being sent in compartment first dries through supercooler 17 and then by well heater 18, can select whether to heat at well heater 18, and then wind is delivered in compartment, like this, except humidity also ensure that the temperature in compartment simultaneously, namely meet comfort level requirement.
While mist, if the heat generating components such as battery need cooling, can be controlled by the action of the solenoid electric valve 15 before the 2nd three-way solenoid valve 19, the water pump 22 of open water circulation, make refrigerant first by the first flow of double flow duct heat exchanger 16, the fluid of refrigerant in double flow duct heat exchanger 16 with heat generating components temperature control loop is made to carry out heat exchange, part refrigerant can also be made first by double flow duct heat exchanger 16, the temperature of the fluid being beneficial to control in heat generating components temperature control loop like this, the action being controlled discharge and solenoid electric valve 15 by water pump 22 is regulated, can conveniently control the heat generating components such as battery with cold thus control the operating temperature range that the heat generating components such as battery uses.
Specifically, except mist process enthalpy-humidity chart as shown in Figure 5, Fig. 5 is the enthalpy wet schematic diagram of the first embodiment of the present invention when dehumidifying: first by the new wind W point of outdoor and indoor N point, it is mixed together to C point, it is cooled to L point (dew-point temperature) through supercooler, higher than the meeting condensation moisture of dew-point temperature after air contact to water cooler 17, then the air after precipitating out moisture is heated to O point (i.e. ventilation state point) by well heater 18; Like this, the present invention can meet the needs of dehumidifying in car effectively, in turn ensure that the comfort level in car. In addition, mist pattern of removing during present embodiment avoiding the repeatedly switching of refrigeration with heating mode, relative in traditional air-conditioning, well heater and water cooler are same interchanger, like this when except mist, it is necessary to constantly switching refrigeration and heating mode, heat exchanger core body is made always to be in thermal shock state, waste energy like this, along with the increase of switch mode, it is easy to cause the inefficacy of interchanger. And embodiments of the present invention only need control three-way solenoid valve can complete corresponding switching, and the refrigerant that well heater only becomes popular, and cold refrigerant also only walked by water cooler, complete like this thermal shock of can avoiding, and saves the energy.Simultaneously while dehumidifying, again can air after heating and dehumidification, meet the comfort level in car.
In embodiments of the present invention, the wind that compartment inner blower 24 blows out is again by well heater 18 after first being dehumidified by water cooler 17, the wind of so last blowout just can keep certain temperature and humidity, thus avoid cold wind and directly blow in compartment, solve the problem that when dehumidifying in existing automative air conditioning or remove mist, blowout cold wind causes the comfort level of people to reduce. In addition, the temperature of the wind of blowout suitably can regulate by controlling the aperture of the first air door 25, it is necessary to when temperature is relatively high, the aperture of the first air door 25 is relatively larger, is conducive to like this keeping the comfort level in compartment. In addition, the air intake of blower fan 24 comprises new wind and return air, and both ratios are controlled by the 2nd air door 23.
In addition, for electromobile, it may also be useful to the temperature of environment is too low also to have an impact on battery life and affect actual service life. When automobilism is snowed heavily as in exceedingly odious sky in the situation that temperature is relatively low, the Heating elements such as its battery need to work at normal temperatures equally, but the envrionment temperature of periphery is well below normal working temperature, like this when starting to start automobile, just need the elements such as battery are carried out pre-warm, it is made to be rapidly heated, to ensure the work-ing life of battery and to ensure actual service life.
Specifically, as shown in Figure 4, the heat pump of the present invention is substantially as follows in battery pre-warm pattern operate situation: heat pump runs, compressor 10 starts, the interface that three-way solenoid valve 124 leads to external heat exchanger is closed, the interface leading to double flow duct heat exchanger 16 is opened, other 2nd three-way solenoid valve 19 is closed, the gaseous coolant of such High Temperature High Pressure is from compressor out, it is introduced into well heater 18, at this moment the first air door 25 can reach maximum, avoid wind bypass and without well heater, in car after discharge unit energy, after three-way solenoid valve 124, enter the first flow of double flow duct heat exchanger 16, at this moment solenoid electric valve 15 with double flow duct heat exchanger 16 bypass can cut out, such refrigerant all flows to double flow duct heat exchanger 16, at this moment water pump 22 is started, by the circulation on current road, battery 21 is preheated, promote the temperature of battery. refrigerant temperature after double flow duct heat exchanger 16 reduces further, last refrigerant by throttle valve component as electric expansion valve 14 throttle after, refrigerant becomes the refrigerant of liquid low-temp low-pressure, and enter external heat exchanger 13, outside compartment, absorb heat, (at this moment start the blower fan of external heat exchanger, both are impelled to carry out heat exchange), such refrigerant becomes gas-liquid two-phase or the superheated vapo(u)r refrigerant of low-temp low-pressure, after magnetic valve 122, returns to gas-liquid separator 11, finally, compressor 10 is returned to, and by compressor work, become again the superheated vapo(u)r of High Temperature High Pressure, form a complete circulation. by the time when the temperature of battery 21 Heating element such as grade reaches to a certain degree, it is possible to operating mode is switched to heating mode and runs.
If ensureing that battery can be rapidly heated, can also do when above-mentioned battery pre-warm pattern to change: the first air door 25 when just starting, can be made first to close, the refrigerant of High Temperature High Pressure that compressor discharges is allowed first not carry out heat exchange at well heater 18, but allow refrigerant directly be heated up by battery along stream road to double flow duct heat exchanger 16, the intensification of such battery is faster, but the human comfort in compartment is weaker possibly, frame can also be allowed like this to take advantage of personnel to select voluntarily.
Introducing the 2nd kind of embodiment of the present invention below, Fig. 6 is the pipeline connection diagram of the present invention's the 2nd kind of embodiment. present embodiment is a kind of improvement in the first embodiment above, import and export in external heat exchanger specifically arrange a triplate line part respectively, three-way solenoid valve, as Fig. 6 being the pipeline between external heat exchanger 13 and three-way solenoid valve 124 arranges the 3rd three-way solenoid valve 28, the pipeline exported between electric expansion valve of external heat exchanger 13 arranges a triplate line part 27, an interface of the 3rd three-way solenoid valve 28 and well heater 18, the pipeline that vapour liquid separator 11 is come connects, two other interface leads to external heat exchanger 13 respectively, triplate line part 27, equally, two other interface of triplate line part 27 connects external heat exchanger 13, electric expansion valve 14 respectively, like this, also three bypass flow path of bypass flow path as heat pump of an external heat exchanger 13 just it is the increase in, when system is for during except mist pattern and heating mode, can not need to use external heat exchanger 13, at this moment, the interface that 3rd three-way solenoid valve 28 leads to pipeline fitting 27 is opened, and the interface leading to external heat exchanger can be closed, refrigerant can directly pass through from the 3rd bypass flow path, same like this can form complete heat pump, and avoid the waste of the energy, it is to increase the Energy Efficiency Ratio of heat pump. this the 3rd bypass flow path carries out bypass when can also be heating mode.
In addition, in 3rd bypass flow path, three-way solenoid valve arranges position and can also adjust, pipeline between external heat exchanger 13 and well heater 18, vapour liquid separator 11 arranges a triplate line part, and pipeline between external heat exchanger 13 and electric expansion valve 14 arranges a three-way solenoid valve, the same like this object of the invention that can realize; Three-way solenoid valve can also substitute with two general magnetic valves in addition, as before magnetic valve is arranged on external heat exchanger 13 respectively or in the 3rd bypass flow path etc.
The above is only the better embodiment of the present invention, and the present invention not does any restriction in form. Although the present invention discloses as above with better embodiment, but and it is not used to limit the present invention. Any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize the Method and Technology content of above-mentioned announcement that technical solution of the present invention is made many possible variations and modification, or be revised as the equivalent embodiment of equivalent variations. Therefore, every content not departing from technical solution of the present invention, the technical spirit of foundation the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (10)
1. an automotive air-conditioning system, the heat pump comprising heat generating components temperature control loop and there is refrigerant circulation circuit, wherein refrigerant circulation circuit and heat generating components temperature control loop carry out heat exchange by double flow duct heat exchanger, the first flow of described double flow duct heat exchanger is connected with refrigerant circulation circuit, and the second road of double flow duct heat exchanger is connected with heat generating components temperature control loop;
Described automotive air-conditioning system has: refrigeration mode, heating mode, except mist pattern, battery pre-warm pattern totally four kinds of operating mode;
Described heat pump comprises compressor, be positioned at compressor inlet before vapour liquid separator, arrange respectively the well heater of heat is provided to compartment and the water cooler of cold, the external heat exchanger being positioned at outside compartment and throttling assembly is provided to compartment;Described well heater and water cooler carry out heat supply, cooling or remove mist to described compartment according to the operating mode demand in compartment; Described well heater and external heat exchanger can be selected to carry out heat exchange; The refrigerant that the described well heater of described heat pump only becomes popular, and cold refrigerant only walked by described water cooler, to avoid thermal shock;
Refrigerant from compressor out after first lead to described well heater, the pipeline of described heater outlet is also provided with three-way solenoid valve, an interface of three-way solenoid valve directly or indirectly leads to external heat exchanger, and another one interface directly or indirectly leads to the first flow of double flow duct heat exchanger.
2. automotive air-conditioning system according to claim 1, it is characterized in that, in the refrigerant circulation circuit of described heat pump, first flow for described double flow duct heat exchanger is provided with the 2nd bypass flow path, the junction of the first flow and described 2nd bypass flow path that are provided with solenoid electric valve or described double flow duct heat exchanger in described 2nd bypass flow path is provided with solenoid electric valve, to control the flow of the refrigerant by double flow duct heat exchanger first flow, ensure the temperature controlled requirement for Heating element further.
3. automotive air-conditioning system according to claim 1 and 2, it is characterized in that, in the refrigerant circulation circuit of described heat pump, for the bypass passageways providing the described water cooler of cold to be provided with a refrigerant in compartment, conducting when described bypass passageways runs heating mode or battery pre-warm pattern at heat pump.
4. automotive air-conditioning system according to claim 3, it is characterized in that, the refrigerant circulation circuit of described heat pump comprises the 2nd three-way solenoid valve, 2nd three-way solenoid valve is arranged in the pipeline between water cooler and double flow duct heat exchanger, and it can optionally control the conducting leading to the stream road of described water cooler or the described bypass passageways of described water cooler.
5. automotive air-conditioning system according to claim 1 and 2, it is characterised in that, described double flow duct heat exchanger is plate-type heat exchanger.
6. automotive air-conditioning system according to claim 5, it is characterised in that, the capacity of the storage space of the refrigerant liquid in described vapour liquid separator is the 20-40% of described heat pump coolant injection amount.
7. automotive air-conditioning system according to claim 5, it is characterised in that, described throttling assembly is can two-way circulate to carry out the electric expansion valve that throttles or thermal expansion valve.
8. automotive air-conditioning system according to claim 6 or 7, it is characterized in that, described automotive air-conditioning system also comprises the blower fan for air-supply in compartment, when described heat pump is in except mist pattern, the wind that described blower fan is sent first is dehumidified by described water cooler, then by being sent in compartment after well heater; Described well heater can optionally to the wind after dehumidifying to carry out heating or not heating according to the operating mode in compartment, with the comfort level ensured in compartment.
9. automotive air-conditioning system according to claim 8, it is characterized in that, blast inlet at described well heater is provided with the first air door, the first air door can step-less adjustment, regulating thus realize the regulating and controlling of the ratio by the air quantity of well heater by described first air door;
With or described automotive air-conditioning system in described compartment, be also provided with ptc heater, when heating mode by the temperature of optionally ptc heater described in open and close to control in compartment, and it is first by well heater, blow by described ptc heater and then in compartment again to the wind in described compartment.
10. automotive air-conditioning system according to claim 8, it is characterized in that, the refrigerant circulation circuit of described heat pump also comprises the 3rd bypass flow path of external heat exchanger described in a bypass, when system is for during except mist pattern and heating mode, it is possible to optionally the 3rd bypass flow path described in conducting.
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| JP6125330B2 (en) * | 2013-05-28 | 2017-05-10 | サンデンホールディングス株式会社 | Air conditioner for vehicles |
| CN104279800B (en) * | 2013-07-09 | 2018-01-23 | 比亚迪股份有限公司 | Electric automobile air-conditioning system and electric automobile |
| CN104340004A (en) * | 2013-07-27 | 2015-02-11 | 许昌 | Car air conditioning system composed of semiconductor refrigeration and super heat conduction pipelines |
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| CN105774468B (en) * | 2016-03-03 | 2017-11-24 | 浙江大学 | New-energy electric vehicle waste heat energy storing type air-conditioning system and its method based on solution dehumidification |
| CN107554233A (en) * | 2016-06-30 | 2018-01-09 | 上海汽车集团股份有限公司 | Electric automobile and its air-conditioning assembly |
| CN107639993B (en) * | 2016-07-21 | 2021-12-14 | 杭州三花研究院有限公司 | Thermal management system |
| CN107639992B (en) * | 2016-07-21 | 2022-05-20 | 杭州三花研究院有限公司 | Thermal management system |
| JP6948146B2 (en) * | 2017-04-18 | 2021-10-13 | サンデン・オートモーティブクライメイトシステム株式会社 | Vehicle air conditioner |
| CN111251810B (en) * | 2018-11-30 | 2022-08-09 | 比亚迪股份有限公司 | Thermal management system of vehicle and vehicle |
| CN110949089B (en) * | 2019-11-25 | 2022-01-07 | 珠海格力电器股份有限公司 | Control method and control device for thermal management device of automobile, and storage medium |
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