CN110351987B - Radiator, controller, photovoltaic electric equipment and radiating method - Google Patents
Radiator, controller, photovoltaic electric equipment and radiating method Download PDFInfo
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- CN110351987B CN110351987B CN201910633152.8A CN201910633152A CN110351987B CN 110351987 B CN110351987 B CN 110351987B CN 201910633152 A CN201910633152 A CN 201910633152A CN 110351987 B CN110351987 B CN 110351987B
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- radiator
- temperature difference
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- temperature
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 167
- 238000010248 power generation Methods 0.000 claims abstract description 43
- 239000003507 refrigerant Substances 0.000 claims abstract description 25
- 230000001276 controlling effect Effects 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 13
- 238000004378 air conditioning Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
- H05K7/20927—Liquid coolant without phase change
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
- F24F2005/0064—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy
- F24F2005/0067—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground using solar energy with photovoltaic panels
Abstract
The disclosure provides a radiator, a controller, photovoltaic electric equipment and a radiating method, and relates to the field of heat exchange. The radiator comprises a first cooling passage and a second cooling passage, wherein the first cooling passage is configured to cool a rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except an electric equipment unit when the photovoltaic electric equipment is in a pure photovoltaic power generation mode; the second cooling passage is configured to cool the rectifying device and the inverting device of the photovoltaic electric equipment by using the refrigerant output by the electric equipment unit under other modes of the photovoltaic electric equipment outside the pure photovoltaic power generation mode. The radiator reduces the dependence of the unit on an external cooling source, and the unit does not depend excessively on the external cooling source under severe conditions such as photovoltaic power step and the like, so that the stability of the unit is improved.
Description
Technical Field
The disclosure relates to the field of heat exchange, and in particular relates to a radiator, a controller, photovoltaic electric equipment and a radiating method.
Background
The photovoltaic centrifugal system is a common commercial model, and adopts multimode switching, namely five operation modes are adopted when photovoltaic and commercial power are supplied in a mixed mode: photovoltaic air conditioner mode, pure photovoltaic power generation mode, photovoltaic air conditioner and system power utilization mode. The photovoltaic air conditioner working mode is a working mode that when the photovoltaic power generation power is equal to the power consumption power of an air conditioning unit, the photovoltaic power generation system can just completely generate power for the air conditioning unit to operate; the pure air conditioner working mode is a working mode that the air conditioner unit takes electricity to a public power grid when the photovoltaic power generation system does not work; the pure photovoltaic power generation mode is a working mode that when the air conditioner unit does not work, all power generated by the photovoltaic power generation system can transmit power to a power grid; the photovoltaic air conditioner and the system power generation working mode is a working mode that when the photovoltaic power generation power is larger than the power consumption power of an air conditioner unit, the power generated by the photovoltaic power generation system can preferentially meet the operation of the air conditioner unit, and redundant power can generate power to a public power grid; the photovoltaic air conditioner and the system power utilization mode is a working mode that when the photovoltaic power generation power is smaller than the power consumption power of an air conditioning unit, the power generation energy of the photovoltaic power generation system is insufficient for the operation of the air conditioning unit, and part of electric energy needs to be supplemented from a public power grid.
In the related technology, two radiators are utilized to radiate heat, one radiator is responsible for cooling the rectifying module, the other radiator is responsible for the inversion module, the radiator responsible for cooling the rectifying module is in any mode of the air conditioning unit, the external cooling source is required to provide a refrigerant, and the cooling performance of the external cooling source determines the running stability of the unit.
Disclosure of Invention
When the power step changes, the test of an external cooling source is more serious, and the photovoltaic air conditioner needs to be compatible with the quick response of the power step and the test of the self stability, and excessively depends on the heat dissipation effect of the cooler, so that the stability of the photovoltaic air conditioner is poor.
The technical problem to be solved by the present disclosure is to provide a radiator, a controller, photovoltaic electric equipment and a heat dissipation method, which can reduce the dependence of an electric equipment unit on an external cooling source, and further improve the stability of the unit.
According to an aspect of the present disclosure, there is provided a heat sink including: the first cooling passage is configured to cool a rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except the electric equipment unit when the photovoltaic electric equipment is in a pure photovoltaic power generation mode; and the second cooling passage is configured to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit under other modes of the photovoltaic electric equipment outside the pure photovoltaic power generation mode.
In one embodiment, when the second cooling passage works and the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to the temperature difference threshold value, the first cooling passage and the second cooling passage are used for heat exchange so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
In one embodiment, the input port of the first cooling passage is disposed proximate to the output port of the second cooling passage.
In one embodiment, a distance between the first cooling passage and the second cooling passage is less than a distance threshold.
In one embodiment, the first cooling passage is provided with an on-off valve, and the on-off valve of the first cooling passage is conducted when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value; and under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than the temperature difference threshold value, the on-off valve of the first cooling passage is turned off.
In one embodiment, the first cooling passage is provided with a regulating valve, and when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, the opening degree of the regulating valve of the first cooling passage is regulated so as to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator.
According to another aspect of the present disclosure, there is also provided a method of dissipating heat from photovoltaic devices using a heat sink, wherein the heat sink includes a first cooling passage and a second cooling passage, the method comprising: judging whether the photovoltaic electric equipment is in a pure photovoltaic power generation mode or not; if the photovoltaic electric equipment is in a pure photovoltaic power generation mode, controlling the first cooling passage to be conducted so as to cool the rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except the electric equipment unit; and if the photovoltaic electric equipment is in other modes except the pure photovoltaic power generation mode, controlling the second cooling passage to be conducted so as to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit.
In one embodiment, when the second cooling passage works, judging whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value; if so, controlling the first cooling passage and the second cooling passage to perform heat exchange so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
In one embodiment, when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, the on-off valve of the first cooling passage is controlled to be conducted; and under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than the temperature difference threshold value, controlling the on-off valve of the first cooling passage to be turned off.
In one embodiment, when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to the temperature difference threshold, the opening of the regulating valve of the first cooling passage is regulated to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator.
According to another aspect of the present disclosure, there is also provided a controller that controls a radiator, wherein the radiator includes a first cooling passage and a second cooling passage, the controller including: the working mode judging unit is configured to judge whether the photovoltaic electric equipment is in a pure photovoltaic power generation mode or not; the cooling passage control unit is configured to control the first cooling passage to be conducted if the photovoltaic electric equipment is in a pure photovoltaic power generation mode so as to cool the rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except the electric equipment unit; and if the photovoltaic electric equipment is in other modes except the pure photovoltaic power generation mode, controlling the second cooling passage to be conducted so as to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit.
In one embodiment, the temperature difference judging unit is configured to judge whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value when the second cooling passage is in operation; the cooling passage control unit is configured to control the first cooling passage to perform heat exchange with the second cooling passage when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
According to another aspect of the present disclosure, there is also provided a controller that controls a radiator, wherein the radiator includes a first cooling passage and a second cooling passage, the controller including: a memory; and a processor coupled to the memory, the processor configured to perform the method as described above based on instructions stored in the memory.
According to another aspect of the present disclosure, there is also provided a photovoltaic powered device, including: the radiator; and/or a controller as described above for controlling the radiator.
In some embodiments, the photovoltaic powered device is a photovoltaic air conditioner.
According to another aspect of the disclosure, a computer-readable storage medium is also presented, on which computer program instructions are stored, which instructions, when executed by a processor, implement the above-mentioned method.
Compared with the related art, the radiator is arranged, two groups of cooling passages are distributed in the radiator, different cooling passages are adopted to cool power devices in different working modes, dependence of the unit on an external cooling source is reduced by the radiator, and the unit is not excessively dependent on the external cooling source under severe conditions such as photovoltaic power step and the like, so that stability of the unit is improved.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural view of one embodiment of a heat sink of the present disclosure.
Fig. 2 is a flow chart illustrating an embodiment of a method for dissipating heat from photovoltaic devices using a heat sink according to the present disclosure.
Fig. 3 is a flow chart illustrating another embodiment of a method for dissipating heat from photovoltaic devices using a heat sink according to the present disclosure.
Fig. 4 is a schematic diagram of the structure of one embodiment of the controller of the present disclosure.
Fig. 5 is a schematic structural diagram of another embodiment of a controller of the present disclosure.
Fig. 6 is a schematic structural diagram of another embodiment of a controller of the present disclosure.
Fig. 7 is a schematic structural diagram of another embodiment of a controller of the present disclosure.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
Fig. 1 is a schematic structural view of one embodiment of a heat sink of the present disclosure. The radiator comprises a first cooling passage 11 and a second cooling passage 12.
The input port of the first cooling passage 11 is connected with a cooling source except the electric equipment unit and is configured to cool the rectifying device 13 of the photovoltaic electric equipment by using a refrigerant output by the cooling source except the electric equipment unit when the photovoltaic electric equipment is in a pure photovoltaic power generation mode, wherein the cooling source except the electric equipment unit is a cooler or a cold water source for providing cold water and the like; the input port of the second cooling passage 12 is connected with the electric equipment unit and is configured to cool the rectifying device 13 and the inverting device 14 of the photovoltaic electric equipment by using the refrigerant output by the electric equipment unit under other modes of the photovoltaic electric equipment outside the pure photovoltaic power generation mode. Wherein the cooling source and the consumer unit other than the consumer unit are not shown in the figure.
In one embodiment, the photovoltaic powered device is a photovoltaic air conditioner, which may be, for example, a photovoltaic centrifuge system, or a photovoltaic screw machine system. Other modes than the pure photovoltaic power generation mode are, for example, a photovoltaic power utilization device working mode, a pure power utilization device working mode, a photovoltaic power utilization device and system power generation working mode and a photovoltaic power utilization device and system power utilization working mode. If the electric equipment is a photovoltaic air conditioner, the other modes except the pure photovoltaic power generation mode are a photovoltaic air conditioner working mode, a pure air conditioner working mode, a photovoltaic air conditioner and system power generation working mode and a photovoltaic air conditioner and system power utilization working mode.
In one embodiment, the first cooling channel 11 is arranged around the rectifying device 13 of the power device, for example, and the second cooling channel 12 is arranged around the entire power device. Wherein the power device comprises a rectifying device 13 and an inverting device 14.
The rectifying device and the inverter device can be cooled by the refrigerant of the unit under other modes except the pure photovoltaic power generation mode, but the unit does not work under the pure photovoltaic power generation mode and cannot be cooled by the refrigerant of the unit, and the rectifying device is required to be cooled by an external cooling source.
The high-power radiator may have a problem of uneven temperature, which affects the working temperature of the power device, resulting in unreliable power device, and the radiator may have uneven temperature, and condensation may occur on the surface of the radiator, so that the problem of uneven temperature of the conventional radiator needs to be solved.
In another embodiment of the present disclosure, temperature sensors are provided at the inlet and outlet of the heat sink to detect the inlet and outlet temperatures of the heat sink. For example, temperature sensing bulbs are respectively arranged at the inlet and outlet positions of the radiator to detect the inlet temperature and the outlet temperature.
In the running state of the electric equipment, namely when the second cooling passage works, judging whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is larger than or equal to a temperature difference threshold value, namely judging whether the temperature difference between the input port and the output port of the radiator, which are positioned in the second cooling passage, is larger than or equal to the temperature difference threshold value, if so, indicating that the radiator has the problem of uneven temperature, and carrying out uniform temperature compensation.
In one embodiment, the input port of the first cooling passage is disposed proximate to the output port of the second cooling passage. In another embodiment, a distance between the first cooling passage and the second cooling passage is less than a distance threshold.
In one embodiment, an on-off valve, such as a throttle valve, is provided on the first cooling passage. When the temperature difference between the input port and the output port of the radiator of the second cooling passage is larger than or equal to the temperature difference threshold value, the on-off valve of the first cooling passage is conducted until the temperature difference between the input port and the output port of the second cooling passage is smaller than the temperature difference threshold value; and under the condition that the temperature difference between the input port and the output port of the radiator of the second cooling passage is smaller than the temperature difference threshold value, the on-off valve of the first cooling passage is turned off. When the on-off valve of the first cooling passage is conducted, the first cooling passage and the second cooling passage work, wherein the first cooling passage can cool the output end of the second cooling passage, so that the temperature difference between the input port and the output port of the radiator can be reduced, and the stability and the reliability of the unit are improved. When the on-off valve of the first cooling passage is turned off, the output end of the second cooling passage is not subjected to uniform temperature compensation.
In another embodiment, when the temperature difference between the input port and the output port of the radiator of the second cooling passage is greater than or equal to the temperature difference threshold, the opening of the regulating valve of the first cooling passage is regulated to reduce the temperature difference between the input port and the output port of the second cooling passage, and the regulating valve is, for example, a throttle valve. The opening degree of the throttle valve of the first cooling passage is adjusted according to the temperature difference, so that the temperature difference between the inlet and the outlet of the radiator is reduced, the temperature uniformity of the radiator is ensured, and the stability and the reliability of the unit are ensured.
Fig. 2 is a flow chart illustrating an embodiment of a method for dissipating heat from photovoltaic devices using a heat sink according to the present disclosure.
In step 210, it is determined whether the photovoltaic power consumption device is in the pure photovoltaic power generation mode, if yes, step 220 is performed, otherwise step 230 is performed. The photovoltaic electric equipment is a photovoltaic air conditioner, and the photovoltaic air conditioner can be a photovoltaic centrifugal system, for example.
In step 220, the first cooling channel is controlled to be turned on, so that the rectification device of the photovoltaic power utilization device is cooled by the refrigerant output by the cooler. The input port of the first cooling passage is connected to the chiller.
In step 230, the second cooling channel is controlled to be turned on, so that the rectifying device and the inverting device of the photovoltaic electric equipment can be cooled by using the refrigerant output by the electric equipment set. The input port of the second cooling passage is connected with the electric equipment unit.
In the embodiment, the radiator is arranged, two groups of cooling passages are distributed in the radiator, different cooling passages are adopted to cool the power devices in different working modes, the dependence of the unit on the cooler is reduced by using the radiator, and the unit is not excessively dependent on the cooler under severe conditions such as photovoltaic power step and the like, so that the stability of the unit is improved.
Fig. 3 is a flow chart illustrating another embodiment of a method for dissipating heat from photovoltaic devices using a heat sink according to the present disclosure.
In step 310, when the second cooling path is in operation, it is determined whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to the temperature difference threshold, if yes, step 320 is performed, otherwise step 330 is performed. When the second cooling passage works, namely the electric equipment is started to operate, whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is larger than or equal to a temperature difference threshold value or not is judged, namely whether the temperature difference between the input port and the output port of the second cooling passage positioned in the radiator is larger than or equal to the temperature difference threshold value or not is judged.
In step 320, the first cooling passage is controlled to exchange heat with the second cooling passage to adjust a temperature difference between an inlet temperature and an outlet temperature of the radiator. For example, the on-off valve of the first cooling passage is controlled to be conducted, or the opening degree of the regulating valve of the first cooling passage is regulated to regulate the quantity of the refrigerant so as to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator until the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than the temperature difference threshold value.
In step 320, the first cooling passage need not be opened. I.e. the on-off valve controlling the first cooling passage is turned off.
In the embodiment, when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to the temperature difference threshold value, the temperature difference between the inlet and the outlet of the radiator can be reduced by controlling the first cooling passage to perform heat exchange with the second cooling passage, so that the temperature uniformity of the radiator is ensured, and the stability and the reliability of the unit are ensured.
Fig. 4 is a schematic diagram of the structure of one embodiment of the controller of the present disclosure. The controller includes an operation mode determination unit 410 and a cooling passage control unit 420.
The operation mode determining unit 410 is configured to determine whether the photovoltaic powered device is in a pure photovoltaic power generation mode.
The cooling channel control unit 420 is configured to control the first cooling channel to be turned on to cool the rectifying device of the photovoltaic power consumption device by using the refrigerant output by the cooling source except the power consumption device unit, for example, the cooling machine if the photovoltaic power consumption device is in the pure photovoltaic power generation mode; and if the photovoltaic electric equipment is in other modes except the pure photovoltaic power generation mode, controlling the second cooling passage to be conducted so as to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit.
In the embodiment, the radiator is provided with two groups of cooling passages, and different cooling passages are adopted to cool the power device in different working modes, so that the dependence of the unit on the cooler is reduced, and the unit is not excessively dependent on an external cooling source under severe conditions such as photovoltaic power step and the like, so that the stability of the unit is improved.
Fig. 5 is a schematic structural diagram of another embodiment of a controller of the present disclosure. The controller further includes a temperature difference judging unit 510.
The temperature difference judging unit 510 is configured to judge whether a temperature difference between an inlet temperature and an outlet temperature of the radiator is equal to or greater than a temperature difference threshold value when the second cooling passage is in operation.
The cooling passage control unit 520 is configured to control the first cooling passage to perform heat exchange with the second cooling passage to adjust a temperature difference between the inlet temperature and the outlet temperature of the radiator when the temperature difference between the inlet temperature and the outlet temperature of the radiator is equal to or greater than a temperature difference threshold. For example, the on-off valve of the first cooling passage is controlled to be conducted, or the opening degree of the regulating valve of the first cooling passage is regulated to regulate the quantity of the refrigerant so as to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator until the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than the temperature difference threshold value.
In the embodiment, when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to the temperature difference threshold value, the temperature difference between the inlet and the outlet of the radiator can be reduced by controlling the first cooling passage to perform heat exchange with the second cooling passage, so that the temperature uniformity of the radiator is ensured, and the stability and the reliability of the unit are ensured.
Fig. 6 is a schematic structural diagram of another embodiment of a controller of the present disclosure. The controller includes a memory 610 and a processor 620. Wherein: the memory 610 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used to store instructions in the embodiments corresponding to figures 2-3. Processor 620, coupled to memory 610, may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 620 is configured to execute instructions stored in the memory.
In one embodiment, the controller 700 may also include a memory 710 and a processor 720, as shown in FIG. 7. Processor 720 is coupled to memory 710 through BUS 730. The controller 700 may also be coupled to external storage 750 via storage interface 740 for invoking external data, and may also be coupled to a network or another computer system (not shown) via network interface 760. And will not be described in detail herein.
In the embodiment, the data instruction is stored by the memory, and then the processor processes the instruction, so that the dependence of the unit on external cooling sources such as a cooler is reduced, and the unit is not excessively dependent on the cooler under severe conditions such as photovoltaic power step and the like, so that the stability of the unit is improved.
In another embodiment of the present disclosure, a photovoltaic powered device, such as a photovoltaic air conditioner, including the heat sink described above, and the controller described above, is protected.
In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of the corresponding embodiment of fig. 2-3. It will be apparent to those skilled in the art that embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (14)
1. A heat sink, comprising:
the photovoltaic power generation system comprises a first cooling passage, a second cooling passage and a third cooling passage, wherein the first cooling passage is configured to cool a rectifying device of the photovoltaic power utilization device by utilizing a refrigerant output by a cooling source except a power utilization device unit when the photovoltaic power utilization device is in a pure photovoltaic power generation mode; and
a second cooling passage configured to cool the rectifying device and the inverting device of the photovoltaic electric device by using the refrigerant output by the electric device unit in other modes except the pure photovoltaic power generation mode of the photovoltaic electric device,
and under the condition that the second cooling passage works and the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, utilizing the first cooling passage and the second cooling passage to perform heat exchange so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
2. The heat sink of claim 1, wherein,
the input port of the first cooling passage is disposed proximate to the output port of the second cooling passage.
3. The heat sink of claim 1, wherein,
the distance between the first cooling passage and the second cooling passage is less than a distance threshold.
4. A radiator according to claim 2 or 3, wherein the first cooling passage is provided with an on-off valve,
when the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, the on-off valve of the first cooling passage is conducted;
and under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than a temperature difference threshold value, the on-off valve of the first cooling passage is turned off.
5. A radiator according to claim 2 or 3, wherein the first cooling passage is provided with a regulating valve,
and under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, the opening degree of the regulating valve of the first cooling passage is regulated so as to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator.
6. A heat sink according to any one of claims 1-3, wherein the cooling source other than the consumer unit is a chiller.
7. A method of dissipating heat from a photovoltaic device using a heat sink, wherein the heat sink includes a first cooling path and a second cooling path, the method comprising:
judging whether the photovoltaic electric equipment is in a pure photovoltaic power generation mode or not;
if the photovoltaic electric equipment is in a pure photovoltaic power generation mode, controlling the first cooling passage to be conducted so as to cool the rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except for an electric equipment unit; and
if the photovoltaic electric equipment is in other modes except the pure photovoltaic power generation mode, the second cooling passage is controlled to be conducted so as to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit,
when the second cooling passage works, judging whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is larger than or equal to a temperature difference threshold value;
and if so, controlling the first cooling passage and the second cooling passage to perform heat exchange so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
8. The method of claim 7, wherein,
controlling the on-off valve of the first cooling passage to be conducted under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is larger than or equal to a temperature difference threshold value;
and controlling the on-off valve of the first cooling passage to be turned off under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is smaller than a temperature difference threshold value.
9. The method of claim 7, wherein,
and under the condition that the temperature difference between the inlet temperature and the outlet temperature of the radiator is greater than or equal to a temperature difference threshold value, the opening degree of the regulating valve of the first cooling passage is regulated so as to reduce the temperature difference between the inlet temperature and the outlet temperature of the radiator.
10. A controller for controlling a heat sink, wherein the heat sink includes a first cooling passage and a second cooling passage, the controller comprising:
the working mode judging unit is configured to judge whether the photovoltaic electric equipment is in a pure photovoltaic power generation mode or not;
the cooling passage control unit is configured to control the first cooling passage to be conducted if the photovoltaic electric equipment is in a pure photovoltaic power generation mode so as to cool the rectifying device of the photovoltaic electric equipment by utilizing a refrigerant output by a cooling source except for an electric equipment unit; and if the photovoltaic electric equipment is in other modes except the pure photovoltaic power generation mode, controlling the second cooling passage to be conducted so as to cool the rectifying device and the inverting device of the photovoltaic electric equipment by utilizing the refrigerant output by the electric equipment unit;
the temperature difference judging unit is configured to judge whether the temperature difference between the inlet temperature and the outlet temperature of the radiator is larger than or equal to a temperature difference threshold value when the second cooling passage works;
the cooling passage control unit is further configured to control the first cooling passage and the second cooling passage to perform heat exchange when a temperature difference between an inlet temperature and an outlet temperature of the radiator is equal to or greater than a temperature difference threshold value, so as to adjust the temperature difference between the inlet temperature and the outlet temperature of the radiator.
11. A controller for controlling a heat sink, wherein the heat sink includes a first cooling passage and a second cooling passage, the controller comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 7 to 9 based on instructions stored in the memory.
12. A photovoltaic powered device, comprising:
the heat sink of any one of claims 1-6; and/or
A controller for controlling a radiator according to claim 10 or 11.
13. The photovoltaic powered device of claim 12, wherein,
the photovoltaic electric equipment is a photovoltaic air conditioner.
14. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the method of any of claims 7 to 9.
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