CN113879073B - Vehicle thermal management system based on forward and reverse electric cards and control method thereof - Google Patents
Vehicle thermal management system based on forward and reverse electric cards and control method thereof Download PDFInfo
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- CN113879073B CN113879073B CN202111290093.2A CN202111290093A CN113879073B CN 113879073 B CN113879073 B CN 113879073B CN 202111290093 A CN202111290093 A CN 202111290093A CN 113879073 B CN113879073 B CN 113879073B
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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
- B60H1/00007—Combined heating, ventilating, or cooling devices
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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
- B60H1/00321—Heat exchangers for air-conditioning devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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Abstract
The invention discloses a vehicle thermal management system based on a positive and a negative electric cards and a control method thereof. The device consists of an outer circulation and an inner circulation, wherein the two circulation layers are synchronously and reversely carried out. In the refrigeration mode, an electric field is applied, normal-temperature fluid passes through the positive electricity card and absorbs heat to become high-temperature fluid, and then the high-temperature fluid exchanges heat with the high-temperature heat exchanger to become normal-temperature fluid; after the electric field is removed, the electric field is reversed, the heat is released to become low-temperature fluid, and the low-temperature fluid absorbs heat from the low-temperature heat exchanger to become normal-temperature fluid. When in a heating mode, an electric field is applied, normal-temperature fluid firstly passes through a reverse electric card and releases heat to become low-temperature fluid, and then exchanges heat with a low-temperature heat exchanger to become normal-temperature fluid; after the electric field is removed, the electric field passes through the positive electrode card and absorbs heat to become high-temperature fluid, and the high-temperature fluid releases heat to the high-temperature heat exchanger to become normal-temperature fluid. The invention has no moving parts, skillfully compensates the short plates in the prior art, has simple structure, convenient use, cleanness and environmental protection.
Description
Technical Field
The invention belongs to the field of refrigeration and low-temperature engineering, and particularly relates to a vehicle thermal management system based on a forward and reverse electric card and a control method thereof.
Background
Vapor compression refrigeration is used as a traditional refrigeration technology and is widely applied to industrial refrigeration, food preservation, air conditioning systems and other production and living, but the vapor compression technology also has the problems of environmental damage, low efficiency, heavy equipment and the like. Along with the continuous improvement of the technological development level and the increase of people's importance on energy conservation and emission reduction and environmental protection, the development of efficient and environment-friendly refrigeration technology becomes the main stream direction of current research.
The electric card refrigeration technology is regarded as a novel refrigeration mode, and attention is paid to the advantages of high efficiency, environmental protection, easy miniaturization and the like. The dielectric material changes its polarization state when an electric field is applied and removed, and the temperature of the material changes accordingly under adiabatic conditions. For positive card materials, the temperature of the material increases when an electric field is applied, and decreases when the electric field is removed; for the reverse electric card material, the material temperature will decrease when an electric field is applied, and the material temperature will increase when the electric field is removed.
Although the electric card refrigeration efficiency is higher and no greenhouse gas is emitted compared with the vapor compression refrigeration mode, the main research on the electric card refrigeration device at present is mainly focused on the development of electric card materials and the testing stage of electric card effects, and the research on the system level is less. Most of the existing electric card refrigeration equipment needs to realize the heat and cold exchange process through the movement or rotation of an electric card element, however, the design has poor stability, is difficult to use on mobile equipment such as vehicles and the like, has a single heat transfer mode of a solid contact surface and low heat exchange efficiency, and is not widely applied to production and life.
Disclosure of Invention
In view of the defects of design and development of the existing electric card refrigeration system, the invention provides a vehicle thermal management system based on a forward electric card and a reverse electric card and a control method thereof, and the system can realize the heat exchange process with the outside under the condition of not moving or rotating the electric card material, thereby ingeniously compensating the short plate in the prior art, and the device has the advantages of simple structure, convenient use and good refrigeration effect. The technical scheme of the invention is as follows:
a vehicle thermal management system based on a forward and reverse electric card comprises an outer circulation pipeline and an inner circulation pipeline;
the outside circulation pipeline sequentially comprises a first circulation pump, a first heat exchanger, a second electric clamp pipeline, a fourth heat exchanger and a first electric clamp pipeline, and a closed circulation pipeline is formed through pipelines;
the inner side circulation pipeline sequentially comprises a second circulation pump, a second heat exchanger, a second electric clamp pipeline, a third heat exchanger and a first electric clamp pipeline, and a closed circulation pipeline is formed through pipelines;
the first positive electric card and the first reverse electric card are connected in parallel to form a first electric card pipeline through a control valve;
the second positive electric card and the second reverse electric card are connected in parallel to form a second electric card pipeline through a control valve;
the first electric clamp pipeline and the second electric clamp pipeline are respectively connected in series with the inner side circulating pipeline and the outer side circulating pipeline through control valves;
the first circulating pump is connected with the first reversing valve in parallel;
the second circulating pump is connected with the second reversing valve in parallel.
According to the control method of the vehicle thermal management system based on the forward and reverse electric card, the pulse voltage is provided for the electric card material through the power supply, so that the heat exchange process is realized;
the device comprises an inner side circulation and an outer side circulation, wherein the two circulation are simultaneously and reversely carried out;
the outside circulation is driven by a first circulating pump and passes through a first heat exchanger and a fourth heat exchanger; the inner side circulation is driven by a second circulating pump and passes through a second heat exchanger and a third heat exchanger;
each cycle consists of two parts of processes, namely a stage of applying an electric field at two ends of the electric card material is named as a first half of the cycle, and a stage of removing the electric field at two ends of the electric card material is named as a second half of the cycle;
the refrigerating and heating system comprises two working modes, namely a refrigerating mode and a heating mode.
In the cooling mode:
the first heat exchanger and the second heat exchanger are used as low-temperature heat exchangers, the third heat exchanger and the fourth heat exchanger are used as high-temperature heat exchangers, at the moment, the outer circulation is that the fourth heat exchanger flows to the first heat exchanger circulation, and the inner circulation is that the second heat exchanger flows to the third heat exchanger circulation;
in the first half of the circulation process in the refrigeration mode, the power supply applies an electric field to the electric card material, and in the process, the first positive electric card and the second positive electric card are both in a high-temperature state, and the first reverse electric card and the second reverse electric card are both in a low-temperature state;
in the outside circulation, normal temperature fluid enters a first positive electricity card through a first circulating pump, absorbs heat of the first positive electricity card to become high temperature fluid, then enters a high Wen Disi heat exchanger, gives out heat to a high temperature fourth heat exchanger to become normal temperature fluid, then enters a second reverse electricity card, gives out heat to a second reverse electricity card to become low temperature fluid, finally enters a low temperature first heat exchanger, absorbs heat from the low temperature first heat exchanger to become normal temperature fluid, and completes the circulation;
in the inner circulation, the normal temperature fluid firstly enters the second positive electric card, absorbs the heat of the second positive electric card to become high temperature fluid, then enters the high Wen Disan heat exchanger, gives out heat to the high temperature third heat exchanger to become normal temperature fluid, then enters the first reverse electric card, gives out heat to the first reverse electric card to become low temperature fluid, finally enters the low temperature second heat exchanger through the second circulating pump, absorbs the heat from the low temperature second heat exchanger to become normal temperature fluid, and completes the circulation.
In the latter half of refrigeration cycle in the refrigeration mode, the power supply removes the electric field at two ends of the electric card material, in the process, the first positive electric card and the second positive electric card are both in a low-temperature state, and the first inverse electric card and the second inverse electric card are both in a high-temperature state;
in the outside circulation, normal temperature fluid enters a first reverse electric card through a first circulating pump, absorbs heat of the first reverse electric card to become high temperature fluid, then enters a high Wen Disi heat exchanger, gives out heat to a high temperature fourth heat exchanger to become normal temperature fluid, then enters a second positive electric card, gives out heat to a second positive electric card to become low temperature fluid, finally enters a low temperature first heat exchanger, absorbs heat from the low temperature first heat exchanger to become normal temperature fluid, and completes the circulation;
in the inner circulation, the normal temperature fluid firstly enters the second reverse electric card, absorbs the heat of the second reverse electric card to become high temperature fluid, then enters the high Wen Disan heat exchanger, gives out heat to the high temperature third heat exchanger to become normal temperature fluid, then enters the first positive electric card, gives out heat to the first positive electric card to become low temperature fluid, finally enters the low temperature second heat exchanger through the second circulating pump, absorbs the heat from the low temperature second heat exchanger to become normal temperature fluid, and completes the circulation.
In the heating mode:
the first heat exchanger and the second heat exchanger are used as high-temperature heat exchangers, the third heat exchanger and the fourth heat exchanger are used as low-temperature heat exchangers, at the moment, the outer circulation is that the fourth heat exchanger flows to the first heat exchanger circulation, and the inner circulation is that the third heat exchanger flows to the second heat exchanger circulation;
in the first half of the heating mode lower circulation, the power supply applies an electric field to the electric card material, and in the process, the first positive electric card and the second positive electric card are both in a high-temperature state, and the first inverse electric card and the second inverse electric card are both in a low-temperature state;
in the outside circulation, the normal temperature fluid firstly enters a second reverse electric card, emits heat to the second reverse electric card to become low temperature fluid, then enters a low temperature fourth heat exchanger, absorbs heat from a low Wen Disi heat exchanger to become normal temperature fluid, then enters a first positive electric card, absorbs heat from the first positive electric card to become high temperature fluid, finally enters a high temperature first heat exchanger through a first circulating pump, emits heat to the high temperature first heat exchanger to become normal temperature fluid, and completes the circulation;
in the inner circulation, normal temperature fluid enters a first reverse electric card through a second circulating pump, heat is released to the first reverse electric card to become low temperature fluid, then enters a low Wen Disan heat exchanger, heat is absorbed from the low Wen Disan heat exchanger to become normal temperature fluid, then enters a second positive electric card, heat is absorbed from the second positive electric card to become high temperature fluid, finally enters a high temperature second heat exchanger, heat is released to the high temperature second heat exchanger to become normal temperature fluid, and circulation is completed.
In the latter half of the heating mode lower circulation, the power supply removes the electric fields at the two ends of the electric card material; in the process, the first positive electricity card and the second positive electricity card are both in a low-temperature state, and the first reverse electricity card and the second reverse electricity card are both in a high-temperature state;
in the outside circulation, the normal temperature fluid firstly enters a second positive electric card, emits heat to the second positive electric card to become low temperature fluid, then enters a low temperature fourth heat exchanger, absorbs heat from a low Wen Disi heat exchanger to become normal temperature fluid, then enters a first reverse electric card, absorbs heat from the first reverse electric card to become high temperature fluid, finally enters a high temperature first heat exchanger through a first circulating pump, emits heat to the high temperature first heat exchanger to become normal temperature fluid, and completes the circulation;
in the inner circulation, normal temperature fluid enters a first positive electricity card through a second circulation pump, heat is released to the first positive electricity card to become low temperature fluid, then enters a low Wen Disan heat exchanger, heat is absorbed from a low Wen Disan heat exchanger to become normal temperature fluid, then enters a second reverse electricity card, heat is absorbed from the second reverse electricity card to become high temperature fluid, finally enters a high temperature second heat exchanger, heat is released to the high temperature second heat exchanger to become normal temperature fluid, and circulation is completed.
In the invention, the heat transfer fluid flows through the positive electricity card, the reverse electricity card, the high-temperature heat exchanger and the low-temperature heat exchanger through pipelines under the drive of the circulating pump. The system consists of an outer circulation layer and an inner circulation layer, the two circulation layers are synchronously and reversely carried out, the rotation directions of the two circulation pumps are fixed, the circulation pumps are connected with the reversing valve through pipelines, and the circulation proceeding direction is controlled by adjusting the four-way reversing valve. The external power supply applies a synchronous pulse electric field to the positive and negative electric card devices, and the intensity of the electric field is periodically changed. For the positive electricity card, the electric field is in a high-temperature state when the electric field is applied, and at the moment, normal-temperature fluid flows through the positive electricity card to absorb heat, and the temperature rises; after the electric field is removed, the fluid at normal temperature flows through the positive electricity card in a low-temperature state, and the temperature of the released heat is reduced. For the reverse electric card, the electric field is applied in a low-temperature state, and at the moment, the normal-temperature fluid flows through the reverse electric card, so that the temperature of the released heat is reduced; after the electric field is removed, the fluid at normal temperature flows through the reverse electric card and absorbs heat to rise in temperature. In one period of the electric field intensity change, the positive electricity card can undergo a normal temperature-high temperature-normal temperature-low temperature change process, and the reverse electricity card can undergo a normal temperature-low temperature-normal temperature-high temperature change process.
The invention is divided into two working modes according to the requirements of the vehicle, namely a refrigerating mode and a heating mode, and the switching between the two modes is realized by adjusting the direction of the reversing valve. In the refrigeration mode, an electric field is applied, normal-temperature fluid firstly passes through a positive electric card and absorbs heat to become high-temperature fluid, then releases heat to a high-temperature heat exchanger to become normal-temperature fluid, then passes through a reverse electric card and releases heat to become low-temperature fluid, and finally absorbs heat from the low-temperature heat exchanger to become normal-temperature fluid; the electric field is removed, the normal temperature fluid firstly passes through the reverse electric card and absorbs heat to become high temperature fluid, then releases heat to the high temperature heat exchanger to become normal temperature fluid, then passes through the positive electric card and releases heat to become low temperature fluid, and finally absorbs heat from the low temperature heat exchanger to become normal temperature fluid. When in a heating mode, an electric field is applied, normal-temperature fluid firstly passes through a reverse electric card and releases heat to become low-temperature fluid, then absorbs heat from a low-temperature heat exchanger to become normal-temperature fluid, then passes through a positive electric card and absorbs heat to become high-temperature fluid, and finally releases heat to the high-temperature heat exchanger to become normal-temperature fluid; the electric field is removed, the normal temperature fluid firstly passes through the positive electric card and releases heat to become low temperature fluid, then absorbs heat from the low temperature heat exchanger to become normal temperature fluid, then passes through the reverse electric card and absorbs heat to become high temperature fluid, and finally releases heat to the high temperature heat exchanger to become normal temperature fluid. Compared with the prior art, the device has the advantages of simple structure, convenient use, cleanness, environmental protection, no moving parts, breaks through the barriers of the prior art, and has wider application range.
Drawings
FIG. 1 is a schematic diagram of a system according to the present invention;
FIG. 2 is a graph showing the variation of the power supply voltage according to the present invention;
FIG. 3 is a schematic diagram of the system state of the first half of the cycle in the summer refrigeration state according to the present invention;
FIG. 4 is a schematic diagram of the system state of the second half of the cycle in the summer refrigeration state according to the present invention;
FIG. 5 is a schematic diagram of the system state of the first half of the cycle in winter heating;
fig. 6 is a schematic diagram of the system state of the second half of the cycle in winter heating state.
Detailed Description
The operation of the vehicle thermal management system based on the front-back electric card will be described in detail with reference to the drawings in the embodiments of the present invention.
As shown in fig. 1, a vehicle thermal management system based on a forward and reverse electric card comprises an outer circulation pipeline and an inner circulation pipeline;
the outside circulation pipeline sequentially comprises a first circulation pump 9, a first heat exchanger 1, a second electric clamping pipeline, a fourth heat exchanger 4 and a first electric clamping pipeline, and a closed circulation pipeline is formed by pipelines;
the inner side circulation pipeline sequentially comprises a second circulation pump 10, a second heat exchanger 2, a second electric clamping pipeline, a third heat exchanger 3 and a first electric clamping pipeline, and a closed circulation pipeline is formed by pipelines;
the first positive electricity card 5 and the first inverse electricity card 6 are connected in parallel to form a first electricity card pipeline through a control valve;
the second positive electric card 7 and the second inverse electric card 8 are connected in parallel to form a second electric card pipeline through a control valve;
the first electric clamp pipeline and the second electric clamp pipeline are respectively connected in series with the inner side circulating pipeline and the outer side circulating pipeline through control valves;
the first circulating pump 9 is connected with the first reversing valve 11 in parallel;
the second circulation pump 10 is connected in parallel with a second reversing valve 12.
The embodiment is specifically as follows:
as shown in fig. 1, the valve comprises a thirteen control valve 13, a fourteen control valve 14, a fifteen control valve 15, a sixteen control valve 16, a seventeen control valve 17, an eighteen control valve 18, a nineteen control valve 19, a twenty control valve 20, a two-one control valve 21, a two-two control valve 22, a two-three control valve 23, a two-four control valve 24, a two-five control valve 25, a two-six control valve 26, a two-seven control valve 27 and a two-eight control valve 28;
a first circulating pump 9, a second circulating pump 10, a first heat exchanger 1, a second heat exchanger 2, a third heat exchanger 3 and a fourth heat exchanger 4;
a first positive card 5, a second positive card 7;
a first reverse electric card 6 and a second reverse electric card 8;
a first reversing valve 11 and a second reversing valve 12.
FIG. 2 shows the change of the electric field intensity at two sides of the electric card material in the present cycle:
the process a is a process of applying an electric field, the voltage at two ends of the electric card material rises from 0 to E0 in 0-tau 1 time, at the moment, the positive electric card is an adiabatic heating process, and the reverse electric card is an adiabatic cooling process;
and b, the process is a heat exchange process, the voltage is kept at E0 within the period of tau 1-tau 2, the positive electricity card is in a high-temperature state, normal-temperature fluid flows through the positive electricity card, heat in the material of the electric card is absorbed to become high-temperature fluid, and the temperature of the positive electricity card is reduced. The reverse electric card is in a low-temperature state, normal-temperature fluid flows through the reverse electric card, heat is released to the electric card material to become low-temperature fluid, and the temperature of the reverse electric card is increased;
the process c is a process of removing an electric field, the voltage at two ends of the electric card material is reduced from E0 to 0 within a period of tau 2-tau 3, at this time, the positive electric card is an adiabatic cooling process, and the reverse electric card is an adiabatic heating process;
and d, the process is a heat exchange process, the voltage is kept at 0 within the period of tau 3-tau 4, the positive electricity card is in a low-temperature state, normal-temperature fluid flows through the positive electricity card, heat is released to the material of the electric card to become low-temperature fluid, and the temperature of the positive electricity card is increased. The reverse electric card is in a high-temperature state, normal-temperature fluid flows through the reverse electric card, heat is absorbed from the reverse electric card to become high-temperature fluid, and the temperature of the reverse electric card is reduced.
In the invention, the pulse voltage is provided for the electric card material through the power supply, so that the heat exchange process is realized.
The circulation system consists of an inner circulation and an outer circulation, wherein the two circulation are simultaneously and reversely carried out. The outside circulation is driven by a first circulation pump 9 and passes through the first heat exchanger 1 and the fourth heat exchanger 4; the inner circulation is driven by a second circulation pump 10 through the second heat exchanger 2 and the third heat exchanger 3. Each cycle consists of a two-part process, and for convenience of description, the electric field applying stage at both ends of the electric card material is named as the first half of the cycle, corresponding to the a-b process of fig. 2, and the electric field removing stage at both ends of the electric card material is named as the second half of the cycle, corresponding to the c-d process of fig. 2. Because the main application object of the system is an air conditioning system of a new energy vehicle, two working modes of a refrigeration mode and a heating mode are set according to requirements, and working processes of the two different working modes are described in detail below.
In the refrigeration mode, the first heat exchanger 1 and the second heat exchanger 2 are used as low-temperature heat exchangers, the third heat exchanger 3 and the fourth heat exchanger 4 are used as high-temperature heat exchangers, and at the moment, the outer circulation is clockwise circulation, and the inner circulation is anticlockwise circulation.
Fig. 3 is a schematic diagram of the first half of the cycle in the refrigeration mode, i.e. the system state in the process of fig. 2a-b, wherein the solid lines and the dashed lines represent the pipeline circulation situation determined by the opening and closing situation of the control valve, and wherein the solid lines represent the pipeline in the direction of the valve is in an open state, and the dashed lines represent the pipeline in the direction of the valve is in a closed state. The power supply applies an electric field to the electric card material in the process of a-b, and in the process, the first positive electric card 5 and the second positive electric card 7 are both in a high-temperature state, and the first inverse electric card 6 and the second inverse electric card 8 are both in a low-temperature state. In the outside circulation, normal temperature fluid enters the first positive electricity card 5 through the first reversing valve 11D, the first reversing valve 11C, the first circulating pump 9, the first reversing valve 11A, the first reversing valve 11B, the thirteenth valve 13A, the thirteenth valve 13B, the fourteenth valve 14C and the fourteenth valve 14A, absorbs the heat of the first positive electricity card 5 to become high temperature fluid, enters the high Wen Disi heat exchanger 4 through the seventeen valve 17A, the seventeen valve 17B, the eighteen valve 18B and the eighteen valve 18A, emits the heat to the high temperature fourth heat exchanger 4 to become normal temperature fluid, enters the second reversing card 8 through the second three valve 23A, the second three valve 23B, the second four valve 24B and the second four valve 24C, emits the heat to the second reversing card 8 to become low temperature fluid, finally enters the low temperature first heat exchanger 1 through the second seven valve 27A, the second seven valve 27B, the second eight valve 28C and the second eight valve 28A, absorbs the heat from the low temperature first heat exchanger 1 to become normal temperature fluid, and the circulation is completed; in the inner circulation, the normal temperature fluid enters the second positive electric card 7 through the second six valve 26A, the second six valve 26B, the second five valve 25C and the second five valve 25A, absorbs the heat of the second positive electric card 7 to become high temperature fluid, then enters the high Wen Disan heat exchanger 3 through the second one valve 21A, the second one valve 21C, the second two valve 22A and the second two valve 22B, emits the heat to the high temperature third heat exchanger 3 to become normal temperature fluid, then enters the first reverse electric card 6 through the nineteenth valve 19B, the nineteenth valve 19C, the twenty valve 20A and the twenty valve 20C, emits the heat to the first reverse electric card 6 to become low temperature fluid, finally enters the low temperature second heat exchanger 2 through the sixteen valve 16C, the sixteen valve 16A, the fifteen valve 15B, the fifteen valve 15A, the second reversing valve 12B, the second reversing valve 12C, the second circulating pump 10, the second reversing valve 12A and the second reversing valve 12D, absorbs the heat from the low temperature second heat exchanger 2 to become normal temperature fluid, and the circulation is completed.
Fig. 4 is a schematic diagram of the system state in the second half of the refrigeration cycle, i.e. the process of fig. 2c-d, wherein the solid line and the dotted line represent the pipeline circulation condition determined by the opening and closing condition of the control valve, and wherein the solid line represents the pipeline in the direction of the valve is in an open state, and the dotted line represents the valve in the direction of the valve is in a closed state. And c-d, the power supply removes the electric fields at the two ends of the electric card material in the process. In this process, the first positive electricity card 5 and the second positive electricity card 7 are both in a low temperature state, and the first reverse electricity card 6 and the second reverse electricity card 8 are both in a high temperature state. In the outside circulation, normal temperature fluid enters the first reversing valve 11D, the first reversing valve 11C, the first circulating pump 9, the first reversing valve 11A, the first reversing valve 11B, the thirteenth valve 13A, the thirteenth valve 13C, the sixteen valves 16B and the sixteen valves 16C into the first reversing valve 6 to absorb heat of the first reversing valve 6 to become high temperature fluid, then enters the high Wen Disi heat exchanger 4 through the twenty valve 20C, the twenty valve 20B, the eighteen valve 18C and the eighteen valve 18A, emits heat to the high temperature fourth heat exchanger 4 to become normal temperature fluid, then enters the second reversing valve 7 through the twenty-third valve 23A, the twenty-third valve 23C, the two-first valve 21B and the two-first valve 21A, emits heat to the second reversing valve 7 to become low temperature fluid, finally enters the low temperature first heat exchanger 1 through the second-fifth valve 25A, the second-fifth valve 25B, the second-eighth valve 28B and the second-eighth valve 28A, and absorbs heat from the low temperature first heat exchanger 1 to become normal temperature fluid, and the circulation is completed; in the inner circulation, normal temperature fluid firstly enters the second reverse electric card 8 through the second six valve 26A, the second six valve 26C, the second seven valve 27C and the second seven valve 27A, absorbs the heat of the second reverse electric card 8 to become high temperature fluid, then enters the high Wen Disan heat exchanger 3 through the second four valve 24C, the second four valve 24A, the second two valve 22C and the second two valve 22B, emits heat to the high temperature third heat exchanger 3 to become normal temperature fluid, then enters the first positive electric card 5 through the nineteenth valve 19B, the nineteenth valve 19A, the seventeen valve 17C and the seventeen valve 17A, emits heat to the first positive electric card 5 to become low temperature fluid, finally enters the low temperature second heat exchanger 2 through the fourteen valve 14A, the fourteen valve 14B, the fifteen valve 15C, the fifteen valve 15A, the second reversing valve 12B, the second reversing valve 12C, the second circulating pump 10, the second reversing valve 12A and the second reversing valve 12D, absorbs the heat from the low temperature second heat exchanger 2 to become normal temperature fluid, and the cycle is completed.
In the heating mode, the first heat exchanger 1 and the second heat exchanger 2 are used as high-temperature heat exchangers, the third heat exchanger 3 and the fourth heat exchanger 4 are used as low-temperature heat exchangers, and at the moment, the outer circulation is anticlockwise circulation, and the inner circulation is clockwise circulation.
Fig. 5 is a schematic diagram of the system state in the first half of the cycle in heating mode, i.e. in fig. 2a-b, wherein the solid and dashed lines indicate the flow of the pipeline determined by the opening and closing of the control valve, and wherein the solid line indicates the pipeline in the direction of the valve is in an open state and the dashed line indicates the direction of the valve is in a closed state. The power supply applies an electric field to the electric card material in the process of a-b, and in the process, the first positive electric card 5 and the second positive electric card 7 are both in a high-temperature state, and the first inverse electric card 6 and the second inverse electric card 8 are both in a low-temperature state. In the outside circulation, normal temperature fluid firstly enters the second reverse electric card 8 through the twenty-eight valve 28A, the twenty-eight valve 28C, the twenty-seven valve 27B and the twenty-seven valve 27A, emits heat to the second reverse electric card 8 to become low temperature fluid, then enters the low temperature fourth heat exchanger 4 through the twenty-four valve 24C, the twenty-four valve 24B, the twenty-three valve 23B and the twenty-three valve 23A, absorbs heat from the low Wen Disi heat exchanger 4 to become normal temperature fluid, then enters the first positive electric card 5 through the eighteen valve 18A, the eighteen valve 18B, the seventeen valve 17B and the seventeen valve 17A, absorbs heat from the first positive electric card 5 to become high temperature fluid, finally enters the high temperature first heat exchanger 1 through the fourteen valves 14A, the fourteen valves 14C, the thirteenth valve 13B, the thirteenth valve 13A, the first reversing valve 11B, the first reversing valve 11C, the first circulating pump 9, the first reversing valve 11A and the first reversing valve 11D to become normal temperature fluid, and the high temperature first heat exchanger 1 to complete the circulation; in the inner circulation, the normal temperature fluid enters the first reversing valve 12D, the second reversing valve 12C, the second circulating pump 10, the second reversing valve 12A, the second reversing valve 12B, the fifteen valves 15A, the fifteen valves 15B, the sixteen valves 16A and the sixteen valves 16C into the first reversing electric card 6, emits heat to the first reversing electric card 6 to become low temperature fluid, enters the low Wen Disan heat exchanger 3 through the twenty valve 20C, the twenty valve 20A, the nineteenth valve 19C and the nineteenth valve 19B, emits heat to become normal temperature fluid through the low Wen Disan heat exchanger 3, enters the second reversing valve 7 through the second two valves 22B, the second two valves 22A, the second one valve 21C and the second one valve 21A, absorbs heat from the second reversing electric card 7 to become high temperature fluid, finally enters the high temperature second heat exchanger 2 through the second five valves 25A, the second five valves 25C, the second six valves 26B and the second six valves 26A, emits heat to the high temperature second heat exchanger 2 to become normal temperature fluid, and the circulation is completed.
Fig. 6 is a schematic diagram of the system state in the second cycle of the heating mode, i.e. fig. 2c-d, wherein the solid line and the dotted line represent the pipeline circulation situation determined by the opening and closing situation of the control valve, and the solid line represents the pipeline in the direction of the valve in an open state, and the dotted line represents the valve in the direction of the valve in a closed state. And c-d, the power supply removes the electric fields at the two ends of the electric card material in the process. In this process, the first positive electricity card 5 and the second positive electricity card 7 are both in a low temperature state, and the first reverse electricity card 6 and the second reverse electricity card 8 are both in a high temperature state. In the outside circulation, normal temperature fluid firstly enters the second positive electric card 7 through the twenty-eight valve 28A, the twenty-eight valve 28B, the twenty-five valve 25B and the twenty-five valve 25A, emits heat to the second positive electric card 7 to become low temperature fluid, then enters the low temperature fourth heat exchanger 4 through the two-one valve 21A, the two-one valve 21B, the two-three valve 23C and the two-three valve 23A, absorbs heat from the low Wen Disi heat exchanger 4 to become normal temperature fluid, then enters the first reverse electric card 6 through the eighteen valve 18A, the eighteen valve 18C, the twenty-valve 20B and the twenty-valve 20C, absorbs heat from the first reverse electric card 6 to become high temperature fluid, finally enters the high temperature first heat exchanger 1 through the sixteen valve 16C, the sixteen valve 16B, the thirteenth valve 13C, the thirteenth valve 13A, the first reversing valve 11B, the first reversing valve 11C, the first circulating pump 9, the first reversing valve 11A and the first reversing valve 11D to emit heat to become normal temperature fluid, and complete circulation; in the inner circulation, the normal temperature fluid enters the first positive electric card 5 through the second reversing valve 12D, the second reversing valve 12C, the second circulating pump 10, the second reversing valve 12A, the second reversing valve 12B, the fifteen valves 15A, the fifteen valves 15C, the fourteen valves 14B and the fourteen valves 14A, emits heat to the first positive electric card 5 to become low temperature fluid, enters the low Wen Disan heat exchanger 3 through the seventeen valves 17A, 17C, 19A and 19B, absorbs heat from the low Wen Disan heat exchanger 3 to become normal temperature fluid, enters the second reversing card 8 through the second valves 22B, 22C, 24A and 24C, absorbs heat from the second reversing card 8 to become high temperature fluid, and finally enters the high temperature second heat exchanger 2 through the second seven valves 27A, 27C, 26C and 26A, emits heat to the second heat to become normal temperature fluid, and completes the inner circulation.
The invention is further described in detail by the above detailed description, and the invention only specifically describes the application working form of the system in a vehicle thermal management system, especially an electric automobile thermal management system, and can be applied to other working scenes. It should be understood, therefore, that the foregoing description is only of specific embodiments of the invention and is not intended to limit the scope of the invention, but rather should be construed in view of the above teachings.
Claims (3)
1. A control method of a vehicle thermal management system based on a forward and reverse electric card comprises an outer side circulation pipeline and an inner side circulation pipeline;
the outside circulation pipeline sequentially comprises a first circulation pump (9), a first heat exchanger (1), a second electric clamping pipeline, a fourth heat exchanger (4) and a first electric clamping pipeline, and a closed circulation pipeline is formed by pipelines;
the inner side circulation pipeline sequentially comprises a second circulation pump (10), a second heat exchanger (2), a second electric clamping pipeline, a third heat exchanger (3) and a first electric clamping pipeline, and a closed circulation pipeline is formed by pipelines;
the first positive electricity card (5) and the first inverse electricity card (6) are connected in parallel to form a first electricity card pipeline through a control valve;
the second positive electricity card (7) and the second inverse electricity card (8) are connected in parallel to form a second electricity card pipeline through a control valve;
the first electric clamp pipeline and the second electric clamp pipeline are respectively connected in series with the inner side circulating pipeline and the outer side circulating pipeline through control valves;
the first circulating pump (9) is connected with the first reversing valve (11) in parallel;
the second circulating pump (10) is connected with the second reversing valve (12) in parallel;
the method is characterized by comprising the following steps:
providing pulse voltage for the electric card material through a power supply to realize a heat exchange process;
the device comprises an outer circulation and an inner circulation, wherein the two circulation are simultaneously and reversely carried out;
the outside circulation is driven by a first circulating pump (9) and passes through the first heat exchanger (1) and the fourth heat exchanger (4); the inner circulation is driven by a second circulation pump (10) and passes through a second heat exchanger (2) and a third heat exchanger (3);
each cycle consists of two parts of processes, namely a stage of applying an electric field at two ends of the electric card material is named as a first half of the cycle, and a stage of removing the electric field at two ends of the electric card material is named as a second half of the cycle;
the refrigerating and heating system comprises two working modes, namely a refrigerating mode and a heating mode.
2. The control method of a vehicle thermal management system based on a forward and reverse electric card according to claim 1, wherein in the cooling mode:
the first heat exchanger (1) and the second heat exchanger (2) are used as low-temperature heat exchangers, the third heat exchanger (3) and the fourth heat exchanger (4) are used as high-temperature heat exchangers, at the moment, the outer circulation is clockwise circulation, and the inner circulation is anticlockwise circulation;
in the first half of the circulation process in the refrigeration mode, the power supply applies an electric field to the electric card material, in the process, the first positive electric card (5) and the second positive electric card (7) are both in a high-temperature state, and the first inverse electric card (6) and the second inverse electric card (8) are both in a low-temperature state;
in the outside circulation, normal temperature fluid firstly enters a first positive electricity card (5) through a first circulating pump (9), absorbs heat of the first positive electricity card (5) to become high temperature fluid, then enters a high Wen Disi heat exchanger (4), gives off heat to a high temperature fourth heat exchanger (4) to become normal temperature fluid, then enters a second inverse electricity card (8), gives off heat to a second inverse electricity card (8) to become low temperature fluid, finally enters a low temperature first heat exchanger (1), and absorbs heat from the low temperature first heat exchanger (1) to become normal temperature fluid, so that the circulation is completed;
in the inner circulation, normal temperature fluid firstly enters a second positive electricity card (7), absorbs heat of the second positive electricity card (7) to become high temperature fluid, then enters a high Wen Disan heat exchanger (3), gives out heat to a high temperature third heat exchanger (3) to become normal temperature fluid, then enters a first inverse electricity card (6), gives out heat to the first inverse electricity card (6) to become low temperature fluid, finally enters a low temperature second heat exchanger (2) through a second circulating pump (10), and absorbs heat from the low temperature second heat exchanger (2) to become normal temperature fluid, so that the circulation is completed;
in the latter half of refrigeration cycle in the refrigeration mode, the power supply removes the electric field at two ends of the electric card material, in the process, the first positive electric card (5) and the second positive electric card (7) are in a low-temperature state, and the first inverse electric card (6) and the second inverse electric card (8) are in a high-temperature state;
in the outside circulation, normal temperature fluid firstly enters a first reverse electric card (6) through a first circulating pump (9), absorbs heat of the first reverse electric card (6) to become high temperature fluid, then enters a high Wen Disi heat exchanger (4), gives off heat to a high temperature fourth heat exchanger (4) to become normal temperature fluid, then enters a second positive electric card (7), gives off heat to the second positive electric card (7) to become low temperature fluid, finally enters a low temperature first heat exchanger (1), and absorbs heat from the low temperature first heat exchanger (1) to become normal temperature fluid, so that the circulation is completed;
in the inner circulation, normal temperature fluid firstly enters a second reverse electric card (8), absorbs heat of the second reverse electric card (8) to become high temperature fluid, then enters a high Wen Disan heat exchanger (3), gives out heat to a high temperature third heat exchanger (3) to become normal temperature fluid, then enters a first positive electric card (5), gives out heat to the first positive electric card (5) to become low temperature fluid, finally enters a low temperature second heat exchanger (2) through a second circulating pump (10), and absorbs heat from the low temperature second heat exchanger (2) to become normal temperature fluid, so that the circulation is completed.
3. The control method of a vehicle thermal management system based on a forward and reverse electric card according to claim 1, wherein in the heating mode:
the first heat exchanger (1) and the second heat exchanger (2) are used as high-temperature heat exchangers, the third heat exchanger (3) and the fourth heat exchanger (4) are used as low-temperature heat exchangers, and at the moment, the outer circulation is anticlockwise circulation, and the inner circulation is clockwise circulation;
in the first half of the heating mode lower circulation process, an electric field is applied to the electric card material by a power supply, in the process, the first positive electric card (5) and the second positive electric card (7) are both in a high-temperature state, and the first inverse electric card (6) and the second inverse electric card (8) are both in a low-temperature state;
in the outside circulation, normal temperature fluid firstly enters a second reverse electric card (8), heat is released to the second reverse electric card (8) to become low temperature fluid, then enters a low temperature fourth heat exchanger (4), heat is absorbed from the low Wen Disi heat exchanger (4) to become normal temperature fluid, then enters a first positive electric card (5), heat is absorbed from the first positive electric card (5) to become high temperature fluid, finally enters a high temperature first heat exchanger (1) through a first circulating pump (9), and heat is released to the high temperature first heat exchanger (1) to become normal temperature fluid, so that the circulation is completed;
in the inner circulation, normal temperature fluid enters a first reverse electric card (6) through a second circulating pump (10), heat is released to the first reverse electric card (6) to become low temperature fluid, then enters a low Wen Disan heat exchanger (3), heat is absorbed from the low Wen Disan heat exchanger (3) to become normal temperature fluid, then enters a second positive electric card (7), heat is absorbed from the second positive electric card (7) to become high temperature fluid, finally enters a high temperature second heat exchanger (2), and heat is released to the high temperature second heat exchanger (2) to become normal temperature fluid, so that the circulation is completed;
in the latter half of the heating mode lower circulation, the power supply removes the electric fields at the two ends of the electric card material; in the process, the first positive electricity card (5) and the second positive electricity card (7) are in a low-temperature state, and the first reverse electricity card (6) and the second reverse electricity card (8) are in a high-temperature state;
in the outside circulation, normal temperature fluid firstly enters a second positive electric card (7), emits heat to the second positive electric card (7) to become low temperature fluid, then enters a low temperature fourth heat exchanger (4), absorbs heat from the low Wen Disi heat exchanger (4) to become normal temperature fluid, then enters a first inverse electric card (6), absorbs heat from the first inverse electric card (6) to become high temperature fluid, finally enters a high temperature first heat exchanger (1) through a first circulating pump (9), emits heat to the high temperature first heat exchanger (1) to become normal temperature fluid, and the circulation is completed;
in the inner circulation, normal temperature fluid enters the first positive electricity card (5) through the second circulating pump (10), heat is released to the first positive electricity card (5) to become low temperature fluid, then enters the low Wen Disan heat exchanger (3), heat is absorbed from the low Wen Disan heat exchanger (3) to become normal temperature fluid, then enters the second inverse electricity card (8), heat is absorbed from the second inverse electricity card (8) to become high temperature fluid, finally enters the high temperature second heat exchanger (2), and heat is released to the high temperature second heat exchanger (2) to become normal temperature fluid, so that the circulation is completed.
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| CN202111290093.2A CN113879073B (en) | 2021-11-02 | 2021-11-02 | Vehicle thermal management system based on forward and reverse electric cards and control method thereof |
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| CN202111290093.2A CN113879073B (en) | 2021-11-02 | 2021-11-02 | Vehicle thermal management system based on forward and reverse electric cards and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106440484A (en) * | 2016-09-13 | 2017-02-22 | 奈申（上海）智能科技有限公司 | Fluid heat exchanging type electricity card refrigerating device |
| CN111422027A (en) * | 2020-03-25 | 2020-07-17 | 安徽沃博源科技有限公司 | Vehicle thermal management system and control method thereof |
| CN213007493U (en) * | 2020-07-13 | 2021-04-20 | 比亚迪股份有限公司 | Electric automobile and thermal management system thereof |
| CN112984659A (en) * | 2021-03-16 | 2021-06-18 | 重庆大学 | Air conditioning system based on solid-state electric card effect |
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2021
- 2021-11-02 CN CN202111290093.2A patent/CN113879073B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106440484A (en) * | 2016-09-13 | 2017-02-22 | 奈申（上海）智能科技有限公司 | Fluid heat exchanging type electricity card refrigerating device |
| CN111422027A (en) * | 2020-03-25 | 2020-07-17 | 安徽沃博源科技有限公司 | Vehicle thermal management system and control method thereof |
| CN213007493U (en) * | 2020-07-13 | 2021-04-20 | 比亚迪股份有限公司 | Electric automobile and thermal management system thereof |
| CN112984659A (en) * | 2021-03-16 | 2021-06-18 | 重庆大学 | Air conditioning system based on solid-state electric card effect |
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