CN218648781U - Solar module shutoff system - Google Patents
Solar module shutoff system Download PDFInfo
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- CN218648781U CN218648781U CN202222317344.8U CN202222317344U CN218648781U CN 218648781 U CN218648781 U CN 218648781U CN 202222317344 U CN202222317344 U CN 202222317344U CN 218648781 U CN218648781 U CN 218648781U
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- photovoltaic
- relay
- relays
- solar module
- controller
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Abstract
The utility model relates to a solar energy component system of shutting off, include: the photovoltaic circuit is electrically connected with the controller; the photovoltaic circuit comprises a plurality of relays and a plurality of photovoltaic panels, the controller is used for controlling the on-off of different relays, and the relays keep the on-off state when current is electrified; a plurality of the relay with photovoltaic board one-to-one, a plurality of photovoltaic board series system connect to together be connected to the dc-to-ac converter, this application can not cause photovoltaic system's pressure drop and power loss, adopts the physics disconnection, has absolutely reliable subassembly disconnection mode, and when adopting the magnetism to keep the relay, the drive energy consumption is less.
Description
Technical Field
The utility model relates to a distributed photovoltaic technology field especially relates to a solar energy component system of shutting down.
Background
Solar energy is increasingly regarded as a clean energy source by people. With the further reduction of the photovoltaic power generation cost, the installed capacity of the photovoltaic power generation also presents a situation of explosive growth.
At present, a photovoltaic power generation system generally adopts a group series structure, photovoltaic modules after series connection can form kilovolt direct current high voltage, and safety risks can be formed for personnel under the conditions of maintenance, fire fighting and the like, so that some countries and regions have already developed relevant standards, the photovoltaic power generation system is required to support a module-level quick turn-off function, high direct current voltage is avoided under the conditions of fire fighting, maintenance and the like, and potential safety hazards are eliminated.
The controller of the existing solar component turn-off device cannot adopt time control, cannot control the closing and opening of the contact under the condition of no light, and is easy to cause the reduction of the contact service life caused by electric sparks in the working process.
Disclosure of Invention
The utility model overcomes prior art's is not enough, provides a solar energy component closes disconnected ware system.
In order to achieve the purpose, the utility model adopts the technical proposal that: a solar module shutoff system comprising:
the photovoltaic circuit is electrically connected with the controller;
the photovoltaic circuit comprises a plurality of relays and a plurality of photovoltaic panels, the controller is used for controlling the on-off of different relays, and the relays keep the on-off state when current is electrified;
the relays correspond to the photovoltaic panels one to one, and the photovoltaic panels are connected in series and are connected to the inverter together.
In a preferred embodiment of the present invention, the relay is an electromagnetic relay.
In a preferred embodiment of the present invention, the electromagnetic relay includes a contact type electromagnetic relay and a non-contact type electromagnetic relay.
In a preferred embodiment of the present invention, the power supply mode of the relay adopts an external mains power supply.
In a preferred embodiment of the present invention, the power supply voltage of the relay is one of 6V,12V,24V,36V or 220V ac.
In a preferred embodiment of the present invention, the controller is time-controlled, and the photovoltaic circuit inside the photovoltaic panel is closed before the sun rises and opened after the sun falls.
In a preferred embodiment of the present invention, the relay end is provided with a fuse.
The utility model provides a defect that exists among the background art, the utility model discloses possess following beneficial effect:
the controller adopts time control, and the photovoltaic circuit closes the circuit before the sun rises, opens after the sun falls into a mountain, saves the drive energy consumption of relay, closes and opens the contact under the no-light condition, improves life.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a wiring diagram of a shutdown system according to a first embodiment of the present invention;
fig. 2 is a wiring diagram of a shutdown system according to a second embodiment of the present invention.
In the figure:
1. the controller 2, the relay 3, the photovoltaic panel 4, the inverter 5, the fuse 6, the non-contact 7 and the contact.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention is further described in detail with reference to the accompanying drawings and the detailed description, wherein the drawings are simplified and only schematically illustrate the basic structure of the present invention, so that it only shows the components related to the present invention, and it should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific cases.
Example one
As shown in fig. 1, the utility model discloses a solar energy component closes ware system includes:
the controller comprises a controller 1 and a photovoltaic circuit electrically connected with the controller 1;
the photovoltaic circuit comprises a plurality of relays 2 and a plurality of photovoltaic panels 3, the controller 1 is used for controlling the on-off of different relays 2, and the relays 2 keep the on-off state when current is electrified;
the plurality of relays 2 correspond to the photovoltaic panels 3 one by one, and the plurality of photovoltaic panels 3 are connected in series and are connected to the inverter 4 together.
Further, the relay 2 is an electromagnetic relay.
Further, the electromagnetic relay 2 is a non-contact electromagnetic relay, the contact of the relay 2 is a non-contact 6, and the non-contact 6 can be conducted through a capacitor.
Furthermore, the power supply mode of the relay 2 adopts the power supply of external commercial power.
Further, the power supply voltage of the relay 2 is one of 6V,12V,24V,36V or 220V AC.
Further, the controller 1 adopts time control, and a photovoltaic circuit in the photovoltaic panel 3 is closed before the sun rises and is opened after the sun falls.
Further, the end of the relay 2 is provided with a fuse 5.
Example two
As shown in fig. 2, the present application adopts an electromagnetic relay + control circuit + temperature fuse 5.
The electromagnetic relay adopts an external power supply mode and an internal photovoltaic circuit driving mode, the external driving mode can select direct current 6V,12V,24V and 36V or an alternating current 220V relay 2, and the internal driving mode adopts the current of the component to drive an external circuit of the electromagnetic relay and adopts a main line + branch line mode.
Photovoltaic current flows through the other coil, and when the current is larger than a certain value, the relay 2 can be kept normally closed. When the light intensity is weakened and the electric drive current is reduced, the external drive current provides current for the relay 2, and the relay 2 is kept in a closed state.
Before the photovoltaic panel generates current in the morning, the relay 2 is powered by an external circuit. Relay 2 is closed, photovoltaic system switches on, wait that inverter 4 opens, there is the electric current to flow in the photovoltaic circuit after, relay 2 can trun into inside and outside simultaneous power supply, wait that the electric current is enough big back in the photovoltaic circuit, relay 2 only leans on the photovoltaic current power supply, when meetting emergency, close inverter 4, close external circuit, electric current disappears in electromagnetic relay 2, the contact is opened, the subassembly is in short-circuit state, when fuse 5 temperature exceeded 85 ℃, fuse 5 fuses, 2 electric currents of electromagnetic relay disappear, the subassembly also can be in the state of opening circuit.
The shutoff device part comprises an electromagnetic relay, a relay control circuit and a fuse 5, wherein the electromagnetic relay keeps a switch closed state under the condition of small current energization under the normal condition, the power supply of the relay 2 adopts the mode of supplying power by external commercial power, and the shutoff device is provided with a main switch and can be manually closed.
The relay 2 is an electromagnetic relay, is powered by a photovoltaic internal power supply and an external power supply, an external circuit adopts a main line and branch line mode, and the main line can be direct current 6V,12V,24V,36V or alternating current 220V.
Further, the relay 2 is a contact electromagnetic relay, and the contact of the relay 2 is a contact 7.
The controller 1 of the relay 2 can adopt time control, the photovoltaic circuit closes the circuit before the sun rises and opens the circuit after the sun falls, so that the driving energy consumption of the relay 2 is saved, the contact is closed and opened under the condition of no illumination, and the service life of the contact is not reduced due to electric sparks.
The fuse 5 adopts the fuse 5 of 85 ℃ in temperature, and the fuse 5 is set in the outside circuit of electromagnetic relay 2, meets signals such as catching fire, and when the temperature surpassed 85 ℃, the fuse 5 fusing, relay 2 contact was opened.
In light of the foregoing, it is to be understood that various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (6)
1. A solar module shutoff system, comprising:
the photovoltaic circuit is electrically connected with the controller;
the photovoltaic circuit comprises a plurality of relays and a plurality of photovoltaic panels, the controller is used for controlling the on-off of different relays, and the relays keep the on-off state when current is electrified;
the relays correspond to the photovoltaic panels one to one, and the photovoltaic panels are connected in series and are connected to the inverter together;
the controller adopts time control, and a photovoltaic circuit in the photovoltaic panel is closed before the sun rises and is opened after the sun falls.
2. The solar module shutoff system of claim 1, wherein the relay is an electromagnetic relay.
3. The solar module shutoff system of claim 2, wherein the electromagnetic relay includes a contact electromagnetic relay and a non-contact electromagnetic relay.
4. The solar module shutdown system according to claim 1, wherein the relay is powered by external mains.
5. The solar module shutoff system of claim 1, wherein the relay supply voltage is one of 6V,12V,24V,36V or 220V ac.
6. A solar module shutdown system according to claim 1 wherein the relay end is provided with a fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222317344.8U CN218648781U (en) | 2022-09-01 | 2022-09-01 | Solar module shutoff system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222317344.8U CN218648781U (en) | 2022-09-01 | 2022-09-01 | Solar module shutoff system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218648781U true CN218648781U (en) | 2023-03-17 |
Family
ID=85491767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222317344.8U Active CN218648781U (en) | 2022-09-01 | 2022-09-01 | Solar module shutoff system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218648781U (en) |
-
2022
- 2022-09-01 CN CN202222317344.8U patent/CN218648781U/en active Active
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