CN219421429U - One-to-many heat dissipation system of group string inverter - Google Patents
One-to-many heat dissipation system of group string inverter Download PDFInfo
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- CN219421429U CN219421429U CN202320127698.8U CN202320127698U CN219421429U CN 219421429 U CN219421429 U CN 219421429U CN 202320127698 U CN202320127698 U CN 202320127698U CN 219421429 U CN219421429 U CN 219421429U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The application discloses a one-to-many heat dissipation system of a string inverter, which comprises a control module, a liquid cooling host and a plurality of heat absorption units; the heat absorption units are arranged on the corresponding inverters, and the heat absorption units are connected in parallel and are circularly connected with the liquid cooling host machine through pipelines; the control module is respectively connected with the liquid cooling host machine, the heat absorption unit and/or the inverter; so that the control module can control the liquid cooling host machine to work according to the working state of the inverter, and then the heat absorption unit is used for cooling the inverter. The beneficial effects of this application: the heat absorption units and the liquid cooling host are communicated to form a multi-split heat dissipation topological structure, so that the multi-split heat dissipation topological structure can be applied to networking scenes of multiple inverters. And the key components of the whole heat dissipation system are few, so that the heat dissipation system has small volume space, high whole reliability and small noise, and is convenient for centralized monitoring and maintenance management.
Description
Technical Field
The application relates to the technical field of heat dissipation, in particular to a one-to-many heat dissipation system of a string inverter.
Background
The IGBT module and the inductor in the string inverter are main core power devices and main heating devices, so that scientific temperature control is carried out on the string inverter, and the overall performance and the service life of the inverter are determined. For heat dissipation of the IGBT module with large heat consumption and high power density, a direct cooling mode of a large-size heat pipe radiator and a high-rotating-speed fan is adopted, and the temperature of the IGBT module still cannot meet the control requirement; and the traditional integrated liquid cooling system has complex comprehensive monitoring, comprehensive management and maintenance and higher cost. Therefore, a new heat dissipation structure is urgently needed.
Disclosure of Invention
One of the purposes of the present application is to provide a heat dissipation structure that has a simple structure and is conducive to heat dissipation of a string inverter.
In order to achieve at least one of the above objects, the technical scheme adopted in the application is as follows: a multi-split heat radiation system of a string inverter comprises a control module, a liquid cooling host and a plurality of heat absorption units; the heat absorption units are arranged on the corresponding inverters, and the heat absorption units are connected in parallel and are circularly connected with the liquid cooling host machine through pipelines; the control module is respectively connected with the liquid cooling host machine, the heat absorption unit and/or the inverter; so that the control module controls the liquid cooling host to work according to the working state of the inverter, and then the heat absorption unit is used for cooling the inverter.
Preferably, the control module is electrically connected with the liquid cooling host and the inverter respectively, so that when the inverter is started, the control module controls the liquid cooling host to start synchronously, and then the inverter is cooled by the heat absorbing unit.
Preferably, the control module is adapted to detect the temperature of the heat absorbing unit and/or the inverter, thereby obtaining the ring temperature of the inverter; when the inverter is started and the ring temperature exceeds a set threshold value, the control module controls the liquid cooling host to start, and then the heat absorption unit cools the inverter.
Preferably, the control module comprises a management unit, and the management unit is suitable for being electrically connected with the inverter and the liquid cooling host respectively; when the inverter is started, the management unit is suitable for controlling the liquid cooling host to start synchronously.
Preferably, the control module comprises a management unit and a monitoring unit which are electrically connected with each other; the monitoring unit is suitable for detecting the temperature of the heat absorption unit or the inverter, further obtaining a ring temperature signal of the inverter and sending the ring temperature signal to the management unit; and if the ring temperature of the inverter exceeds a threshold value, the management unit controls the liquid cooling host to start.
Preferably, the heat absorbing unit adopts a water cooling plate, and the water cooling plate is respectively communicated with the liquid cooling host machine through a water inlet end and a water outlet end, so as to form a liquid cooling loop for radiating the inverter.
Preferably, the liquid cooling host comprises an exothermic unit and a power unit; the input end of the heat release unit is connected with the output end of the power unit, the output end of the heat release unit is communicated with the water inlet end of the water cooling plate in parallel connection through a pipeline, the water outlet ends of the water cooling plate are communicated with the input end of the power unit, and the power unit is suitable for conveying cooling liquid with the temperature rising after absorbing heat in the water cooling plate to the heat release unit for cooling and continuously conveying the cooling liquid to the water cooling plate after cooling so as to form the liquid cooling loop.
Preferably, the liquid cooling host further comprises a water separator, the input end of the water separator is communicated with the output end of the heat release unit, and a plurality of output ends of the water separator are respectively communicated with the corresponding water inlet ends of the water cooling plates.
Preferably, the liquid cooling host further comprises a water collector, wherein a plurality of input ends of the water collector are respectively communicated with corresponding water outlet ends of the water cooling plate, and an output end of the water collector is communicated with an input end of the power unit.
Preferably, the heat release unit adopts a condenser, and the power unit adopts a water pump.
Preferably, the heat absorbing unit is adapted to be connected to an IGBT unit mounted in the inverter, and further radiate heat from the IGBT unit through the heat absorbing unit.
Compared with the prior art, the beneficial effect of this application lies in:
the heat absorption units and the liquid cooling host are communicated to form a multi-split heat dissipation topological structure, so that the multi-split heat dissipation topological structure can be applied to networking scenes of multiple inverters. And the key components of the whole heat dissipation system are few, so that the heat dissipation system has small volume space, high whole reliability and small noise, and is convenient for centralized monitoring and maintenance management.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of an installation structure of a water cooling plate and an inverter in the present utility model.
In the figure: the liquid cooling host 100, the condenser 110, the water separator 120, the water collector 130, the water pump 140, the water cooling plate 200, the control module 300, the inverter 400 and the IGBT unit 410.
Detailed Description
The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.
In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.
It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In one preferred embodiment of the present application, as shown in fig. 1 and 2, a one-to-many heat dissipation system of a string inverter includes a control module 300, a liquid cooling host 100, and a plurality of heat absorption units. Wherein the number of heat absorbing units is generally equal to the number of inverters 400 included in the string inverter; so that a plurality of heat absorbing units may be mounted to the corresponding inverter 400. Meanwhile, the plurality of heat absorbing units may be connected in parallel to the liquid cooling host 100 in a circulating manner through a pipeline. The control module 300 is connected with the liquid cooling host 100, the heat absorbing unit and/or the inverter 400 respectively; so that the control module 300 controls the liquid cooling host 100 to work according to the working state of the inverter 400, and the liquid cooling host 100 can realize cooling of the inverter 400 through a liquid cooling loop formed by the liquid cooling host 100 and the heat absorbing unit, so as to ensure that the ring temperature of the inverter 400 is always kept below a set threshold value in the working process.
It can be appreciated that the present utility model can be applied to a scenario of networking multiple inverters by communicating multiple heat absorbing units with the liquid cooling host 100 to form a one-to-many heat dissipation topology. And only the heat absorption unit is integrated on the single inverter 400, compared with the traditional integrated heat dissipation system, the volume of the heat dissipation system can be effectively reduced, and in the process of heat dissipation of the inverter 400 by the heat absorption unit, the noise generated by the heat absorption unit is also smaller.
In this embodiment, the control module 300 controls the liquid cooling host 100 to operate according to the operating state of the inverter 400 in a plurality of control modes, including but not limited to the following two modes.
Control mode one: the control module 300 is electrically connected to the liquid-cooled main unit 100 and the inverter 400, respectively. When the inverter 400 is started, the control module 300 may receive a start signal of the inverter 400, and according to the start signal of the inverter 400, the control module 300 may control the liquid cooling host 100 to start synchronously, so that the liquid cooling host 100 cools the inverter 400 through a liquid cooling loop formed by the liquid cooling host 100 and the heat absorption unit.
Specifically, the control module 300 includes a management unit that can be electrically connected to the inverter 400 and the liquid-cooled host 100, respectively. Thus, when the inverter 400 is started, the management unit may receive the start signal of the inverter 400, and control the liquid cooling host 100 to start synchronously according to the start signal of the inverter 400.
And a second control mode: the control module 300 may detect the temperature of the heat absorbing unit and/or the inverter 400, and further obtain the ring temperature of the inverter 400 according to the detected temperature signal. After the inverter 400 is started, the control module 300 may compare the ring temperature of the inverter 400 with a set threshold, and if the ring temperature of the inverter 400 exceeds the set threshold, the control module 300 may control the liquid cooling host 100 to start, so as to cool the inverter 400 through the heat absorption unit.
Specifically, the control module 300 includes a management unit and a monitoring unit that are electrically connected to each other; the management unit can be electrically connected with the liquid cooling host 100, the monitoring unit can be connected with the heat absorption unit and/or the inverter 400, and the monitoring unit can detect the temperature of the heat absorption unit or the inverter 400, so as to obtain a ring temperature signal of the inverter 400 and send the ring temperature signal to the management unit; if the ring temperature of the inverter 400 exceeds the threshold value, the management unit controls the liquid-cooled host machine 100 to start.
It can be understood that in the second control mode, when the inverter 400 is operated, the ambient temperature inside the inverter 400 will gradually rise, and thus the temperature of the heat absorbing unit connected thereto will also rise; the ring temperature of the inverter 400 can be indirectly obtained by detecting the temperature of the heat absorbing unit, or the ring temperature inside the inverter 400 can be directly detected; how to detect can be set according to actual needs.
It should be noted that the specific structure of the heat absorbing unit, the management unit and the monitoring unit are well known to those skilled in the art. The common heat absorbing unit has a water cooling plate 200, and the water cooling plate 200 is respectively communicated with the liquid cooling host 100 through a water inlet end and a water outlet end, so as to form a liquid cooling loop for radiating heat of the inverter 400. The common management unit is provided with a PLC module or a monitoring board module; common monitoring units are temperature sensors and the like.
In this embodiment, as shown in fig. 2, the heat absorbing unit may be connected to the IGBT unit 410 installed in the inverter 400, and then the heat absorbing unit dissipates heat to the IGBT unit 410.
It should be noted that the core heat generating element of the inverter 400 is the IGBT cell 410; therefore, when the heat dissipation of the inverter 400 is performed, it is only necessary to ensure that the temperature of the IGBT unit 410 is always controlled within a scientific temperature range, that is, within a set threshold range, so as to ensure that the inverter 400 can reliably and stably operate for a long period of time.
In one embodiment of the present application, as shown in fig. 1, a liquid-cooled host machine 100 includes an exothermic unit and a power unit; the input of the heat release unit is connected with the output of the power unit, the output of the heat release unit is communicated with the water inlet end of the parallel water cooling plate 200 through a pipeline, the water outlet ends of the water cooling plate 200 are all communicated with the input of the power unit, the power unit can convey the cooling liquid with the temperature increased after absorbing heat in the water cooling plate 200 to the heat release unit for cooling, and the cooling liquid is continuously conveyed into the water cooling plate 200 after cooling to form a liquid cooling loop.
Specifically, when the inverter 400 operates, heat generated by the inverter 400 is absorbed by the coolant in the corresponding water-cooling plate 200, and thus the temperature of the coolant in the water-cooling plate 200 increases; the cooling liquid with the increased temperature can flow into the heat release unit along the pipeline under the delivery of the power unit, and the heat release unit can cool the cooling liquid with high temperature. After the cooling of the cooling liquid is completed, the power unit can convey the cooling liquid with low temperature to the water cooling plate 200 again, so as to absorb heat generated by the inverter 400 in real time, and further realize heat dissipation of the inverter 400.
It will be appreciated that the heat release unit and the power unit may be integrated into a single ventilation cabinet during design of the liquid cooling host 100, and the control module 300 may also be installed in the ventilation cabinet to control start and stop of the power unit and the heat release unit. Meanwhile, the centralized structure can facilitate the user to manage and maintain the heat dissipation system in a centralized manner.
It is also understood that the specific construction of a heat rejection unit and a power unit are well known to those skilled in the art, a common heat rejection unit may employ a condenser 110, and a common power unit may employ a water pump 140.
In this embodiment, as shown in fig. 1, the liquid cooling host 100 further includes a water separator 120, where an input end of the water separator 120 is connected to an output end of the heat release unit, and a plurality of output ends of the water separator 120 are respectively connected to water inlet ends of the corresponding water cooling plates 200.
In this embodiment, as shown in fig. 1, the liquid cooling host 100 further includes a water collector 130, where multiple input ends of the water collector 130 are respectively connected to the water outlet ends of the corresponding water cooling plates 200, and the output end of the water collector 130 is connected to the input end of the power unit.
It should be noted that the output of the condenser 110 is typically one, and the number of water-cooled panels 200 is plural. Therefore, it is inconvenient that all the water inlet ends of the water cooling plates 200 are directly connected with the output end of the condenser 110 together; therefore, by arranging the water separator 120, the number of the output ends of the water separator 120 is greater than or equal to the number of the water cooling plates 200, and the output ends of the water separator 120 are in one-to-one correspondence with the water inlet ends of the water cooling plates 200, so that the condenser 110 is convenient to communicate with the water cooling plates 200. Similarly, the output end of the water cooling plate 200 is also required to be communicated with the water pump 140 through the water collector 130.
The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.
Claims (10)
1. A multi-split heat radiation system of a string inverter is characterized by comprising a control module, a liquid cooling host and a plurality of heat absorption units; the heat absorption units are arranged on the corresponding inverters, and the heat absorption units are connected in parallel and are circularly connected with the liquid cooling host machine through pipelines; the control module is respectively connected with the liquid cooling host machine, the heat absorption unit and/or the inverter; so that the control module controls the liquid cooling host to work according to the working state of the inverter, and then the heat absorption unit is used for cooling the inverter.
2. The one-to-many heat dissipation system for a string inverter of claim 1, wherein: the control module is respectively and electrically connected with the liquid cooling host and the inverter, so that when the inverter is started, the control module controls the liquid cooling host to synchronously start, and then the inverter is cooled through the heat absorption unit.
3. The one-to-many heat dissipation system for a string inverter of claim 1, wherein: the control module is suitable for detecting the temperature of the heat absorption unit and/or the inverter, and further obtaining the ring temperature of the inverter; when the inverter is started and the ring temperature exceeds a set threshold value, the control module controls the liquid cooling host to start, and then the heat absorption unit cools the inverter.
4. The one-to-many heat dissipation system for a string inverter of claim 2, wherein: the control module comprises a management unit, wherein the management unit is suitable for being electrically connected with the inverter and the liquid cooling host respectively; when the inverter is started, the management unit is suitable for controlling the liquid cooling host to start synchronously.
5. A one-to-many heat dissipation system for a string inverter as defined in claim 3, wherein: the control module comprises a management unit and a monitoring unit which are electrically connected with each other; the monitoring unit is suitable for detecting the temperature of the heat absorption unit or the inverter, further obtaining a ring temperature signal of the inverter and sending the ring temperature signal to the management unit; and if the ring temperature of the inverter exceeds a threshold value, the management unit controls the liquid cooling host to start.
6. A one-to-many heat dissipation system for a string inverter as defined in any one of claims 1-5, wherein: the heat absorption unit adopts a water cooling plate, and the water cooling plate is communicated with the liquid cooling host machine through a water inlet end and a water outlet end respectively, so that a liquid cooling loop for radiating the inverter is formed.
7. The one-to-many heat dissipation system for a string inverter of claim 6, wherein: the liquid cooling host comprises an exothermic unit and a power unit; the input end of the heat release unit is connected with the output end of the power unit, the output end of the heat release unit is communicated with the water inlet end of the water cooling plate in parallel connection through a pipeline, the water outlet ends of the water cooling plate are communicated with the input end of the power unit, and the power unit is suitable for conveying cooling liquid with the temperature rising after absorbing heat in the water cooling plate to the heat release unit for cooling and continuously conveying the cooling liquid to the water cooling plate after cooling so as to form the liquid cooling loop.
8. The one-to-many heat dissipation system for a string inverter of claim 7, wherein: the liquid cooling host machine further comprises a water separator, wherein the input end of the water separator is communicated with the output end of the heat release unit, and a plurality of output ends of the water separator are respectively communicated with the corresponding water inlet ends of the water cooling plate.
9. The one-to-many heat dissipation system for a string inverter of claim 7, wherein: the liquid cooling host machine further comprises a water collector, a plurality of input ends of the water collector are respectively communicated with the corresponding water outlet ends of the water cooling plates, and the output end of the water collector is communicated with the input end of the power unit.
10. The one-to-many heat dissipation system for a string inverter of claim 1, wherein: the heat absorption unit is suitable for being connected with the IGBT unit installed in the inverter, and then the heat absorption unit is used for radiating heat of the IGBT unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320127698.8U CN219421429U (en) | 2023-01-13 | 2023-01-13 | One-to-many heat dissipation system of group string inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320127698.8U CN219421429U (en) | 2023-01-13 | 2023-01-13 | One-to-many heat dissipation system of group string inverter |
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| Publication Number | Publication Date |
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| CN219421429U true CN219421429U (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320127698.8U Active CN219421429U (en) | 2023-01-13 | 2023-01-13 | One-to-many heat dissipation system of group string inverter |
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| CN (1) | CN219421429U (en) |
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2023
- 2023-01-13 CN CN202320127698.8U patent/CN219421429U/en active Active
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