CN223334642U - Photovoltaic inverter and photovoltaic system - Google Patents
Photovoltaic inverter and photovoltaic systemInfo
- Publication number
- CN223334642U CN223334642U CN202422638260.3U CN202422638260U CN223334642U CN 223334642 U CN223334642 U CN 223334642U CN 202422638260 U CN202422638260 U CN 202422638260U CN 223334642 U CN223334642 U CN 223334642U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- control circuit
- photovoltaic inverter
- control
- photovoltaic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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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- Inverter Devices (AREA)
Abstract
本实用新型公开了一种光伏逆变器及光伏系统，所述光伏逆变器包括箱体、功率电路板和控制电路板，所述功率电路板设置在所述箱体内，所述光伏逆变器还包括控制罩，所述箱体上设有和所述箱体内腔连通的窗口，所述控制罩连接在所述箱体上并罩设于所述窗口的外侧，所述控制电路板连接在所述控制罩内，所述控制电路板通过线缆和所述功率电路板电连接，所述线缆自所述窗口穿过。本实用新型的光伏逆变器方便现场拆卸维护且维护成本较低。
The utility model discloses a photovoltaic inverter and photovoltaic system. The photovoltaic inverter includes a housing, a power circuit board, and a control circuit board. The power circuit board is disposed within the housing. The photovoltaic inverter also includes a control cover. The housing is provided with a window communicating with the housing inner cavity. The control cover is connected to the housing and covers the outside of the window. The control circuit board is connected within the control cover. The control circuit board is electrically connected to the power circuit board via a cable that passes through the window. The photovoltaic inverter of the utility model is easy to disassemble and maintain on site, and has low maintenance costs.
Description
Technical Field
The utility model belongs to the field of power equipment, and particularly relates to a photovoltaic inverter and a photovoltaic system.
Background
The photovoltaic inverter is a power conversion device that can convert direct current generated by a photovoltaic module into alternating current. Currently, a control circuit board for receiving direct current from a photovoltaic module is generally disposed inside a photovoltaic inverter box, and is specifically fixed inside the box by a fastener such as a nut.
When in use, the control circuit board in the box body is easy to be in short circuit and strike fire when in wiring, so that the control circuit board needs to be replaced, but because the control circuit board is arranged in the box body, the box body has high voltage, the electric shock risk to human bodies is high, most inverter manufacturers do not allow the box body to be opened on site, and when the photovoltaic inverter needs to be transported to after-sale maintenance, the maintenance cost is high and the disassembly is inconvenient.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a photovoltaic inverter and a photovoltaic system, which are convenient to disassemble and maintain on site and have lower maintenance cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a photovoltaic inverter, includes box, power circuit board and control circuit board, the power circuit board sets up in the box, photovoltaic inverter still includes the control cover, be equipped with on the box with the window of box inner chamber intercommunication, the control cover is connected on the box and cover is located the outside of window, the control circuit board is connected in the control cover, the control circuit board pass through the cable with the power circuit board electricity is connected, the cable is followed the window passes.
In a preferred embodiment, the case has a face plate, a back plate and a side plate disposed between the face plate and the back plate, and the window is opened on the side plate of the case.
In a preferred embodiment, the control cover is provided with a cavity, the control circuit board is arranged in the cavity, and the open end of the control cover is correspondingly connected with the side plate of the box body.
In a preferred embodiment, the control housing and the side panels of the case are fixedly connected by a plurality of fasteners. When the control circuit board needs to be maintained, only the fastener needs to be disassembled, and the use is convenient.
In a preferred embodiment, a sealing rubber strip is arranged between the control cover and the box body. The sealing rubber strip can realize water and dust prevention over IP 65.
In a preferred embodiment, a plurality of positioning holes are formed in the control cover, and the control circuit board is fixed at the positioning holes through a plurality of fasteners.
In a preferred embodiment, the photovoltaic inverter further comprises a switch disposed in the box, one end of the switch is connected to the control circuit board, and the other end of the switch is connected to the power circuit board.
In a preferred embodiment, the number of the control circuit boards in the cavity is a number. The number of the control circuit boards can be one or more according to actual use conditions.
In a more preferred embodiment, a wire harness button is arranged on the control cover, and the cable on the control circuit board is connected to the switch through the wire harness button.
The utility model also adopts the following technical scheme:
The photovoltaic system comprises a photovoltaic module and is characterized by further comprising the photovoltaic inverter, and the photovoltaic module is electrically connected with a control circuit board of the photovoltaic inverter.
Compared with the prior art, the utility model has the following advantages:
According to the photovoltaic inverter, the control circuit board is arranged on the outer side of the box body, if the control circuit board is in a sparking or damage condition, the control cover is only required to be detached after the control circuit board is powered off, at the moment, the control circuit board can be separated from the box body along with the control cover, only the cable is connected to the control circuit board, the detachment is convenient, the maintenance or the on-site maintenance of the control circuit board is convenient, and the control circuit board is arranged on the outer side of the box body, so that the fire disaster internal extension is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a photovoltaic inverter according to an embodiment of the utility model;
Fig. 2 is another schematic diagram of a photovoltaic inverter according to an embodiment of the present utility model;
Fig. 3 is a perspective view of the control housing.
Wherein, the
100. A photovoltaic inverter;
1. A control circuit board;
2. A power circuit board;
3. The cable comprises a cable body, a box body, a panel, a control cover, a cavity, a control opening, a positioning hole, a sealing rubber strip, a fastening piece, a wire harness button and a switch.
Detailed Description
Preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
The embodiment provides a photovoltaic system, which comprises a photovoltaic module and a photovoltaic inverter, wherein the photovoltaic module is electrically connected with a control circuit board of the photovoltaic inverter. The control circuit board plays a core role in the photovoltaic inverter, and ensures that the inverter can operate efficiently and stably.
The control circuit board is mainly applied to the photovoltaic inverter and comprises the following aspects of (1) current conversion and control, wherein the circuit design and the component layout on the control circuit board ensure that direct-current electric energy can be efficiently and stably converted into alternating current and meanwhile accurate control on current and voltage is realized, (2) signal processing, a high-performance processor and a sensor on the control circuit board monitor and process current and voltage signals from a solar cell panel and state information of a power grid in real time, and ensure that the inverter can quickly respond, and (3) protection and safety functions, namely the control circuit board integrates multiple mechanisms such as overcurrent protection, overvoltage protection, overheat protection and the like, so that the inverter can be safely stopped under abnormal conditions, and equipment damage or safety accidents are prevented.
The photovoltaic inverter further comprises a power circuit board arranged in the photovoltaic inverter box body, direct current of the photovoltaic module can enter the power circuit board through the control circuit board and is converted into alternating current, and the alternating current can be fed back to a commercial power transmission system or used by an off-grid power grid.
Referring to fig. 1 to 3, the photovoltaic inverter of the present embodiment includes a case 4, a power circuit board 2, a control cover 5, a control circuit board 1, and a switch 9, wherein the switch 9 and the power circuit board 2 are disposed in the case 4, and the control circuit board 1 is disposed in the control cover 5. The box 4 includes panel 41, and panel 41 seals box 4 and forms an inner chamber, is equipped with the window with box 4 inner chamber intercommunication on the box 4, and control cover 5 is connected on box 4 and cover locates the outside of window, and control circuit board 1 connects in control cover 5.
Further, the case 4 further has a back plate and a side plate disposed between the front plate 41 and the back plate, and the window is opened on the side plate of the case 4, that is, the control cover 5 is disposed on the side plate of the case 4, specifically, the control cover 5 is fixedly connected with the side plate of the case 4, further, the control cover 5 has an open end 52, and the open end 52 is correspondingly connected with the side plate of the case 4. Specifically, the open end 52 and the side panels of the case 4 are fixedly connected by a plurality of fasteners 7, the fasteners 7 being in particular screws. When maintenance is needed, only the screws are required to be disassembled, so that time and labor are saved.
The control circuit board 1 in the control housing 5 is connected to the power circuit board 2 by means of a cable 3, in particular the cable 3 passing through the window. The control circuit board 1 is arranged outside the box body 4, so that the panel 41 of the box body 4 is prevented from being detached during maintenance, and the maintenance is convenient. In addition, in the prior art, for keeping apart with communication terminal (such as wifi etc.), avoid influencing the signal, set up the shield cover on the control circuit board of box 4 inside generally in order to keep apart the signal, the control circuit board of this implementation sets up in the outside of box, keeps apart with communication terminal, need not to increase the shield cover again.
The control cover 5 has a cavity 51, the control circuit boards 1 are disposed in the cavity 51, the number of the control circuit boards 1 in the cavity 51 is a plurality, and the number of the control circuit boards 1 can be set according to actual use conditions, and can be one or a plurality. Specifically, in the present embodiment, the number of control circuit boards 1 is two. The number of the control covers 5 is also plural, and specifically, the number of the control covers 5 is also two in the present embodiment. The control circuit board 1 is arranged in the independent cavity 51, so that the disassembly and maintenance are convenient, and the fire internal extension can be avoided, thereby causing larger loss. Referring to fig. 3, a joint strip 6 is provided between the control cover 5 and the case 4, and the joint strip 6 can prevent water and dust of IP65 or more. Further, a plurality of positioning holes 53 are provided in the control cover 5, and when the control circuit board 1 is mounted, the control circuit board 1 is positioned through the plurality of positioning holes 53 and the control circuit board 1 is fixed at the positioning holes 53 through a plurality of fasteners, specifically screws. When a new control circuit board 1 needs to be replaced, only the screws are required to be disassembled, the broken control circuit board is taken out of the control cover 5, and the new control circuit board is locked on the control cover 5 through the screws, so that the on-site maintenance is facilitated.
Referring to fig. 2, a switch 9 has one end connected to the control circuit board 1 and the other end connected to the power circuit board 2. The control cover 5 is provided with a wire harness button 8, and the cable 3 on the control circuit board 1 passes through the wire harness button 8 and is connected to a switch 9. Specifically, the plurality of cables 3 pass through the window after being bound by the wire harness button 8 and are connected to the power circuit board 2. In other embodiments, the window may also be sealed with a glan head to achieve good tightness. The use of the wire harness button 8 makes the cable 3 more regular.
In the photovoltaic inverter of the embodiment, the control circuit board 1 is arranged on the outer side of the box body 4, if the control circuit board 1 is in a sparking or damage condition, the control cover 5 is detached after the control circuit board 1 is powered off, at the moment, the control circuit board 1 can be separated from the box body 4 along with the control cover 5, only the cable 3 is connected to the control circuit board 1, the disassembly is convenient, the maintenance or the on-site maintenance of the control circuit board 1 is also convenient, and the control circuit board 1 is arranged outside the box body 4, so that the fire disaster internal extension is avoided.
The working principle of the photovoltaic inverter of this embodiment is as follows:
the control circuit board 1 is fixed on the control cover 5 by screw locking, and the cable 3 passes through the control cover 4 and windows on the box 4 and then is connected with the switch 9 and the power circuit board 2. When maintenance is needed, the control cover 5 is detached after power failure, the control circuit board 1 can be separated from the box body 4 along with the control cover 5, only the cable 3 is connected to the control circuit board 1, at the moment, detachment of the control circuit board 1 can be achieved only by detaching broken fixing harness screws of the control circuit board 1, a new control circuit board 1 with normal functions is placed on the control cover 5, fixing locking screws are used for locking the cable 3 on the new control circuit board 1, the cable 3 can be combed to be regular through the harness buttons 8, then the whole control cover 5 is fixed to the box body 4, and whole maintenance work is completed.
The photovoltaic inverter of this embodiment has at least the following advantages:
(1) The control cover 5 becomes an independent body and is separated from the box body 4, so that the control circuit board 1 can be maintained without disassembling the panel 41 of the box body 4, and the disassembly is convenient and the on-site maintenance is convenient;
(2) The control circuit board 1 is provided with an independent cavity, so that fire internal extension is avoided;
(3) Isolated from the communication terminal, avoids affecting signals, has good EMC shielding effect, and does not need to be additionally provided with a shielding cover.
As used in this specification and in the claims, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, etc. used in the present utility model are merely with respect to the mutual positional relationship of the constituent elements of the present utility model in the drawings.
The above-described embodiments are provided for illustrating the technical concept and features of the present utility model, and are intended to be preferred embodiments for those skilled in the art to understand the present utility model and implement the same according to the present utility model, not to limit the scope of the present utility model. All equivalent changes or modifications made according to the principles of the present utility model should be construed to be included within the scope of the present utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422638260.3U CN223334642U (en) | 2024-10-30 | 2024-10-30 | Photovoltaic inverter and photovoltaic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422638260.3U CN223334642U (en) | 2024-10-30 | 2024-10-30 | Photovoltaic inverter and photovoltaic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223334642U true CN223334642U (en) | 2025-09-12 |
Family
ID=96979588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422638260.3U Active CN223334642U (en) | 2024-10-30 | 2024-10-30 | Photovoltaic inverter and photovoltaic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223334642U (en) |
-
2024
- 2024-10-30 CN CN202422638260.3U patent/CN223334642U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |