CN214900640U - Temperature control device for photovoltaic inverter - Google Patents
Temperature control device for photovoltaic inverter Download PDFInfo
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- CN214900640U CN214900640U CN202121604052.1U CN202121604052U CN214900640U CN 214900640 U CN214900640 U CN 214900640U CN 202121604052 U CN202121604052 U CN 202121604052U CN 214900640 U CN214900640 U CN 214900640U
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- photovoltaic inverter
- temperature control
- protection
- control device
- circuit
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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 utility model discloses a temperature control device for a photovoltaic inverter, which comprises a protective shell, wherein the protective shell is covered outside the photovoltaic inverter, the protective shell is further provided with a processor, a storage battery and a relay, wherein, the storage battery is connected on an operating circuit of the photovoltaic inverter to provide power for the processor, the processor monitors the operating state of the photovoltaic inverter through a temperature control circuit, a current monitoring circuit and a voltage detection circuit, the utility model provides a temperature control device for the photovoltaic inverter, the storage battery stores electricity when the photovoltaic circuit outputs voltage, continuously provides power for the processor, can not be influenced by the electrification of the photovoltaic circuit, can support the processor to execute the operations of DC bus overvoltage protection, AC overvoltage and undervoltage protection, AC frequency protection, polarity reverse connection protection, short circuit protection, island effect protection, over-temperature protection, DC overload protection and the like, a brushless fan with controllable operation speed is designed to help the photovoltaic inverter to dissipate heat.
Description
Technical Field
The utility model relates to a photovoltaic power generation technical field especially relates to a temperature control device for photovoltaic inverter.
Background
The photovoltaic inverter can convert variable direct-current voltage generated by the photovoltaic solar panel into alternating-current inverter with commercial power frequency, and can feed back the alternating-current inverter to a commercial power transmission system or an off-grid power grid.
The protection function of the photovoltaic inverter is divided into direct-current bus overvoltage protection, alternating-current overvoltage and undervoltage protection, alternating-current frequency protection, polarity reversal connection protection, short-circuit protection, island effect protection, over-temperature protection, direct-current overload protection and the like, wherein the over-temperature protection can automatically execute power-off operation when the temperature exceeds a set range, continuous heating of the photovoltaic inverter is avoided, but the mode lacks the inhibiting effect on an over-temperature process, the photovoltaic inverter is difficult to effectively dissipate heat, manual operation is needed for restarting the photovoltaic inverter, and the photovoltaic inverter is not beneficial to collection of photovoltaic energy.
SUMMERY OF THE UTILITY MODEL
The utility model provides a temperature control device for photovoltaic inverter has solved photovoltaic inverter and has lacked the inhibitory action to the excess temperature process in the excess temperature protection, is difficult to effectively dispel the heat to photovoltaic inverter, and needs manual operation to restart photovoltaic inverter, is unfavorable for the technical problem that the photovoltaic energy was gathered.
For solving the technical problem, the utility model provides a temperature control device for photovoltaic inverter, including the protecting crust, the photovoltaic inverter outside is located to the protecting crust cover, further be provided with treater, battery and relay on the protecting crust, wherein, the battery is connected and is provided electric power for the treater on photovoltaic inverter's the operating circuit, the treater passes through temperature control circuit, current monitoring circuit and voltage detection circuit monitoring photovoltaic inverter's running state, the relay is set up the operating speed of the output control brushless fan at the treater and photovoltaic inverter's the condition of opening and close.
Preferably, the processor is electrically connected with the photovoltaic inverter, and a display panel is further disposed on the processor and used for displaying the operating state of the photovoltaic inverter.
Preferably, the operating power of the brushless fan is in direct proportion to the feedback value of the temperature control circuit.
Preferably, the protective case comprises upper cover and the lower cover of the protective case screw fixation as an organic whole, all be provided with the opening on the adjacent terminal surface of upper cover and lower cover, it is adjacent the opening constitutes the air exit jointly, at least one the air exit embeds there is brushless fan, brushless fan guides the ambient air and takes away photovoltaic inverter's the operation heat.
Preferably, the adjacent sides of the upper cover and the lower cover are fixedly connected with radiating fin units, the radiating fin units are provided with contour depressions, and the radiating fin units and the axial direction of the output of the brushless fan are arranged in the same direction.
Preferably, the edge of the upper cover and the lower cover is respectively provided with a pin hole and a screw hole, and a fixing screw penetrates through the pin hole and the screw hole.
Compared with the prior art, the utility model provides a pair of temperature control device for photovoltaic inverter has following beneficial effect: the utility model provides a temperature control device for photovoltaic inverter, the battery is electric power storage when photovoltaic circuit output voltage, continuously provide electric power for the treater, can not receive the circular telegram influence of photovoltaic circuit itself, can support the treater to carry out direct current generating line overvoltage protection, exchange undervoltage protection, alternating current frequency protection, polarity reversal protection, short-circuit protection, island effect protection, excess temperature protection and direct current overload protection and so on operation, the design has the brushless fan help photovoltaic inverter heat dissipation of controllable running speed, the fin can improve heat conduction effect, and brushless fan can heat up when photovoltaic inverter intensifies unusually, improve intensification inhibitory action, can help to maintain photovoltaic inverter resume operation under high temperature environment.
Drawings
Fig. 1 is a structural exploded view of a temperature control device for a photovoltaic inverter according to the present invention;
fig. 2 is a structural diagram of a lower cover in the temperature control device for the photovoltaic inverter of the present invention;
fig. 3 is a control flow chart of the temperature control device for the photovoltaic inverter of the present invention;
fig. 4 is the utility model relates to a correspondence between the brushless fan rotational speed and the photovoltaic inverter detection temperature among the temperature control device for the photovoltaic inverter.
Reference numbers in the figures: 1. protecting the shell; 11. an upper cover; 111. a pin hole; 12. a lower cover; 121. a screw hole; 13. opening the gap; 14. an air outlet; 15. a fin unit; 16. the contour is concave; 2. a brushless fan; 3. a processor; 31. a display panel; 4. a storage battery; 5. a relay.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment is given by fig. 1-4, the utility model relates to a temperature control device for photovoltaic inverter, including protective case 1, protective case 1 covers and is located the photovoltaic inverter outside, further be provided with treater 3, battery 4 and relay 5 on protective case 1, wherein, battery 4 connects and provides electric power for treater 3 on the operating circuit of photovoltaic inverter, treater 3 monitors the running state of photovoltaic inverter through temperature control circuit, current monitoring circuit and voltage detection circuit, relay 5 is set up and is controlled the operating speed of brushless fan 2 and the condition of opening and close of photovoltaic inverter at the output of treater 3, and treater 3 is according to each item numerical value of temperature control circuit, current monitoring circuit and voltage detection circuit, and whether comprehensive judgement carries out direct current bus overvoltage protection, exchanges undervoltage overvoltage protection, alternating current frequency protection, When abnormal operation of the photovoltaic inverter is detected, the photovoltaic inverter is controlled to stop operating, if an overheating phenomenon exists, the brushless fan 2 continuously dissipates heat of the photovoltaic inverter until the photovoltaic inverter recovers the operating temperature, and the processor 3 sends out a starting instruction again to enable the photovoltaic inverter to operate without manual restarting.
The processor 3 is electrically connected with the photovoltaic inverter, the display panel 31 is further arranged on the processor 3, the display panel 31 is used for displaying the running state of the photovoltaic inverter, electric power personnel can conveniently master the running state of the photovoltaic inverter, the display panel 31 can also display various detection values of the processor 3, and the electric power personnel can conveniently predict whether the photovoltaic inverter has abnormal conditions or not, so that the photovoltaic inverter is safer.
The operating power of the brushless fan 2 and the feedback value of the temperature control circuit are in a direct proportional relationship, the higher the feedback value of the temperature control circuit is, the faster the rotation speed of the brushless fan 2 is, wherein, the operating power of the brushless fan 2 and the feedback value of the temperature control circuit can be in a linear function relationship, the operating power of the brushless fan 2 can be gradually increased along with the increase of the temperature, preferably, the operating power of the brushless fan 2 and the feedback value of the temperature control circuit can be in a quadratic function relationship, so that the operating power of the brushless fan 2 can be greatly increased along with the increase of the temperature, and the heating suppression effect on the brushless fan 2, the photovoltaic inverter, the processor 3, the storage battery 4 and the relay 5 is stronger.
Wherein, protective case 1 comprises upper cover 11 and lower cover 12 fixed as an organic whole with protective case 1 screw, all be provided with opening 13 on the adjacent terminal surface of upper cover 11 and lower cover 12, it is adjacent opening 13 constitutes air exit 14 jointly, at least one air exit 14 embeds there is brushless fan 2, the operating heat of photovoltaic inverter is taken away to brushless fan 2 guide outside air, and air exit 14, brushless fan 2, photovoltaic inverter, treater 3, battery 4 and relay 5 are set up on same heat dissipation axis basically, through the air-cooled form, can reduce brushless fan 2, photovoltaic inverter, treater 3, battery 4 and relay 5's operating temperature, avoid the dangerous condition to take place.
Wherein, the equal fixedly connected with fin unit 15 of adjacent side of upper cover 11 and lower cover 12, all be provided with profile depression 16 on the fin unit 15, wherein, fin unit 15 sets up with the axial direction syntropy of brushless fan 2 output, and fin unit 15 is made for metal material, has good heat-conduction effect, and fin unit 15 comprises a plurality of fin monomers that are parallel to each other, and parallel arrangement each other between the adjacent fin can reduce the windage to increase heat transfer area, as preferred, the fin monomer is the wave structure, makes the tortuous circulation of cold air in fin unit 15, can strengthen heat transfer effect.
The edge of the upper cover 11 and the lower cover 12 is respectively provided with a pin hole 111 and a screw hole 121, and relatively, a fixing screw penetrates through the pin hole 111 and the screw hole 121, the processor 3, the storage battery 4 and the relay 5 are arranged in the contour depression 16 and clamped and fixed, after the upper cover 11 and the lower cover 12 are aligned, a long screw penetrates through the pin hole 111 and then is in threaded fit with the screw hole 121, and therefore the upper cover 11 and the lower cover 12 can be fixed into an integral structure.
The working principle is as follows: the photovoltaic inverter is firstly arranged in a bottom contour depression 16 of a lower cover 12, an upper cover 11 is buckled and covered on the lower cover 12, a notch 13 is pressed and fixed on a brushless fan 2, thus the photovoltaic inverter is electrified to operate, variable direct-current voltage generated by a photovoltaic solar panel can be converted into alternating current with commercial power frequency and is partially stored in a storage battery 4 to support a processor 3 to operate, the processor 3 executes the operations of direct-current bus overvoltage protection, alternating-current overvoltage and undervoltage protection, alternating-current frequency protection, polarity reverse connection protection, short-circuit protection, island effect protection, over-temperature protection, direct-current overload protection and the like, wherein when the operating temperature of the photovoltaic inverter continuously rises, a temperature control loop transmits the temperature change value to the processor 3, and the processor 3 instructs the brushless fan 2 to increase the operating rotating speed in real time according to the temperature change value to inhibit the photovoltaic inverter from generating an over-temperature phenomenon, and under the normal operating state, can reduce the loss of brushless fan 2 electric energy, energy-concerving and environment-protective, if photovoltaic inverter has appeared the overheat phenomenon, stop running, brushless fan 2 also can continue the operation heat dissipation, and until photovoltaic inverter resumes operating temperature, treater 3 sends the start instruction again, makes photovoltaic inverter operate, need not artifical manual restart.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a temperature control device for photovoltaic inverter, includes protective case (1), the photovoltaic inverter outside is located to protective case (1) cover, its characterized in that, further be provided with treater (3), battery (4) and relay (5) on protective case (1), wherein, battery (4) are connected and are provided electric power for treater (3) on photovoltaic inverter's the operating circuit, treater (3) are through temperature control circuit, current monitoring circuit and voltage detection circuit monitoring photovoltaic inverter's running state, relay (5) are set up the operating rate of output control brushless fan (2) and photovoltaic inverter's the condition of opening and close at treater (3).
2. The temperature control device for the photovoltaic inverter according to claim 1, wherein the processor (3) is electrically connected to the photovoltaic inverter, and a display panel (31) is further disposed on the processor (3), wherein the display panel (31) is used for displaying an operation state of the photovoltaic inverter.
3. The temperature control device for the photovoltaic inverter as claimed in claim 1, wherein the operating power of the brushless fan (2) is in direct proportion to the feedback value of the temperature control circuit.
4. The temperature control device for the photovoltaic inverter according to claim 1, wherein the protective shell (1) is composed of an upper cover (11) and a lower cover (12) which is fixed with the protective shell (1) into a whole by screws, adjacent end faces of the upper cover (11) and the lower cover (12) are respectively provided with a notch (13), the adjacent notches (13) jointly form an air outlet (14), a brushless fan (2) is arranged in at least one air outlet (14), and the brushless fan (2) guides outside air to take away operating heat of the photovoltaic inverter.
5. The temperature control device for the photovoltaic inverter as claimed in claim 4, wherein the adjacent sides of the upper cover (11) and the lower cover (12) are fixedly connected with a heat sink unit (15), the heat sink unit (15) is provided with a contour depression (16), and the heat sink unit (15) is arranged in the same direction as the axial direction of the output of the brushless fan (2).
6. The temperature control device for the photovoltaic inverter as claimed in claim 4, wherein the upper cover (11) and the lower cover (12) are respectively provided with a pin hole (111) and a screw hole (121) at the edges thereof, and a fixing screw is inserted between the pin hole (111) and the screw hole (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121604052.1U CN214900640U (en) | 2021-07-14 | 2021-07-14 | Temperature control device for photovoltaic inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121604052.1U CN214900640U (en) | 2021-07-14 | 2021-07-14 | Temperature control device for photovoltaic inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214900640U true CN214900640U (en) | 2021-11-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121604052.1U Active CN214900640U (en) | 2021-07-14 | 2021-07-14 | Temperature control device for photovoltaic inverter |
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| Country | Link |
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| CN (1) | CN214900640U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639860A (en) * | 2022-09-07 | 2023-01-24 | 杭州国磊半导体设备有限公司 | Intelligent temperature control device and method for ATE (automatic test equipment) |
-
2021
- 2021-07-14 CN CN202121604052.1U patent/CN214900640U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115639860A (en) * | 2022-09-07 | 2023-01-24 | 杭州国磊半导体设备有限公司 | Intelligent temperature control device and method for ATE (automatic test equipment) |
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