Outdoor photovoltaic grid-connected cabinet

Abstract

The invention relates to the technical field of photovoltaic grid-connected cabinets, in particular to an outdoor photovoltaic grid-connected cabinet which comprises a cabinet body, a circuit breaker mounting chamber, a metering box mounting chamber and a control chamber are arranged in the cabinet body, the circuit breaker mounting chamber is used for mounting a circuit breaker, the metering box mounting chamber is used for mounting a metering box, and the control chamber is used for controlling the control chamber. The control chamber is used for mounting a control module, a mounting plate is arranged in the control chamber, the mounting plate is used for mounting a button and a controller, and a cabinet door for sealing the circuit breaker mounting chamber, the metering box mounting chamber and the control chamber is arranged on the cabinet body. The mounting plate is arranged in the control chamber, then the cabinet door is used for sealing, the controller and the button play a protection role, and the waterproof, dustproof and outdoor protection capabilities of the equipment are enhanced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic grid-connected cabinets, and in particular to an outdoor photovoltaic grid-connected cabinet. Background Art

[0002] The photovoltaic grid-connected cabinet, also known as an AC distribution cabinet or photovoltaic grid-connected distribution box, is a crucial device in photovoltaic power generation systems. Located between the output of the photovoltaic inverter and the power grid (public grid or user-side distribution system), it serves as a "connecting hub" and "safeguard."

[0003] In existing technology, most photovoltaic grid-connected cabinets are placed indoors. However, with the development of society, the demand for outdoor photovoltaic grid-connected cabinets is gradually increasing. If photovoltaic grid-connected cabinets are installed outdoors, they are likely to be exposed to various types of severe weather, so their safety needs to be improved. Summary of the Invention

[0004] In order to improve the safety of outdoor photovoltaic grid-connected cabinets, the present application provides an outdoor photovoltaic grid-connected cabinet.

[0005] This application provides an outdoor photovoltaic grid-connected cabinet, which adopts the following technical solutions: An outdoor photovoltaic grid-connected cabinet comprises a cabinet body, wherein a circuit breaker installation chamber, a meter box installation chamber and a control chamber are provided in the cabinet body, wherein the circuit breaker installation chamber is used for installing the circuit breaker, the meter box installation chamber is used for installing the meter box, and the control chamber is used for installing a control module. A mounting plate is provided in the control chamber, and the mounting plate is used for installing buttons and a controller. The cabinet body is provided with a cabinet door for sealing the circuit breaker installation chamber, the meter box installation chamber and the control chamber.

[0006] By adopting the above technical solution, functional modules are isolated through partition design (circuit breaker room, metering room, control room) to avoid electrical interference; the installation plate is set in the control room and then closed with a cabinet door. Compared with directly installing the controller and buttons on the cabinet door, the structure of this application can protect the controller and buttons, enhance the waterproof performance and safety of the equipment, and the independent chamber + cabinet door enclosed structure enhances dustproof, moisture-proof and outdoor protection capabilities; and the control room integrated installation plate can simplify the wiring and maintenance process of buttons and controllers.

[0007] Optionally, the mounting plate is rotatably mounted on the inner wall of the control chamber, and a limit plate is provided on the inner wall of the control chamber, and the limit plate is used to interfere with the mounting plate.

[0008] By adopting the above technical solution, the rotating mounting plate of the mounting plate is easy to flip over, and the mounting plate can be flipped out of the control room in the direction close to the cabinet door, thereby expanding the maintenance space inside the control room; the limit plate limits the rotation angle of the mounting plate in the direction away from the cabinet door, ensuring stable operation of the button / controller and preventing the mounting plate from interfering with other structures inside the control room.

[0009] Optionally, an observation window and a buckling plate are provided on the surface of the cabinet door close to the inner cavity of the cabinet body, and a through hole is opened on the surface of the cabinet door away from the inner cavity of the cabinet body. The buckling plate is detachably connected to the cabinet body, and the buckling plate is used to press the observation window against the surface of the cabinet door at the outer edge of the through hole. A seal is pressed between the observation window and the cabinet door.

[0010] By adopting the above technical solution, the buckling plate + seal double seals the observation window, reducing the possibility of rainwater infiltration, and is suitable for outdoor scenes; the buckling plate can fix the observation window and the seal at the same time, simplifying the fixing structure; the detachable buckling plate facilitates quick replacement or cleaning of the observation window, reducing maintenance costs.

[0011] Optionally, a rain shield is provided on the top of the cabinet, the projection of the rain shield in the height direction of the cabinet covers the projection of the cabinet in the height direction of the cabinet, and an inclined guide slope is formed on the surface of the rain shield away from the cabinet, and the distance between the guide slope and the top wall of the cabinet decreases in the direction approaching the side wall of the cabinet.

[0012] By adopting the above technical solution, the horizontal size of the rain shield is larger than the horizontal size of the cabinet body, which reduces the possibility of inclined rainwater entering the cabinet body and can provide better rain protection for the cabinet body. The inclined guide slope accelerates the diversion of rainwater to avoid water accumulation on the top of the cabinet.

[0013] Optionally, an unlocking structure is also included, wherein a fixed plate is provided on the inner wall of the control chamber, the mounting plate is rotatably set on the fixed plate, a telescopic groove is provided on the surface of the fixed plate close to the mounting plate, a locking block is slidably provided in the telescopic groove, a locking groove is provided on the surface of the mounting plate close to the fixed plate, a reset elastic member is provided between the locking block and the bottom wall of the telescopic groove, the locking elastic member is used to drive the locking block to pop out of the telescopic groove and insert into the lock slot, and the unlocking structure is used to drive the locking block to exit the lock slot.

[0014] By adopting the above technical solution, the elastic locking block automatically locks the mounting plate to prevent the photovoltaic grid-connected cabinet from accidentally rotating due to vibration and other reasons during operation, thereby affecting the working stability of the photovoltaic grid-connected cabinet; the unlocking structure realizes quick release, taking into account both operational safety and convenience.

[0015] Optionally, the unlocking structure includes an unlocking member and an unlocking inclined surface. An unlocking groove is provided on the surface of the fixed plate close to the cabinet door. The unlocking groove is connected to the telescopic groove. The unlocking member is slidably arranged in the unlocking groove. The unlocking inclined surface is formed on the surface of the lock block close to the cabinet door. The distance between the unlocking inclined surface and the bottom wall of the telescopic groove increases in the direction away from the cabinet door. The unlocking member is used to slide in contact with the unlocking inclined surface.

[0016] By adopting the above technical solution, transmission is achieved through the unlocking inclined plane, and the movement of the unlocking member drives the locking block to move, thereby unlocking the mounting plate. The structure is compact and reliable, and there is no need to design a driving source to unlock the mounting plate, which saves energy, simplifies the transmission path, reduces the failure rate, and is easy to operate.

[0017] Optionally, a wire taking-up box is provided on the inner wall of the control room, a wire inlet hole is provided on the surface of the wire taking-up box facing the cabinet door, a wire outlet hole is provided on the bottom surface of the wire taking-up box, a wire taking-up rod is movably provided in the wire taking-up box, and the wire taking-up rod moves in a direction close to or away from the cabinet door, the wire taking-up rod is used to be located on the side of the wiring harness close to the cabinet door, and is used to interfere with the wiring harness to drive the wiring harness to be retracted from the wire inlet hole into the wiring box, and when the unlocking member drives the lock block to exit the lock slot, the unlocking member is used to drive the wire taking-up rod to move toward the direction close to the cabinet door to release the wiring harness.

[0018] By adopting the above technical solution, the installation plate is unlocked and the wire take-up rod is linked to release the wire harness, avoiding cable breakage when opening the installation plate outside the control room. When the installation plate is locked, the wire take-up rod retracts the wire harness into the junction box, minimizing the possibility that the wire harness accumulates in the circuit breaker installation room under the action of gravity after the photovoltaic grid-connected cabinet has been working for a long time, causing the circuit breaker to heat up and damage the insulation layer of the wire harness. The wire take-up box manages the wire harness in a unified manner, improving the cleanliness and heat dissipation efficiency of the cabinet and reducing the requirements for the insulation layer of the wire harness. The guide design of the inlet / outlet hole reduces cable wear.

[0019] Optionally, the unlocking slot passes through the surface of the fixed plate away from the cabinet door, the unlocking member includes a transmission part, the transmission part passes through the unlocking slot, a transmission rod is rotatably installed on the wire taking-up box, the rotation axis of the transmission rod extends along the height direction of the cabinet body, the wire taking-up rod is arranged on the transmission rod, and the transmission part is used to interfere with the transmission rod, the rotation axis of the transmission rod is located between the wire taking-up rod and the transmission part, the distance between the rotation axis of the transmission rod and the transmission part is smaller than the distance between the rotation axis of the transmission rod and the wire taking-up rod, and a reset elastic member is provided between the transmission rod and the wire taking-up box, and the reset elastic member is used to drive the transmission rod to rotate with the wire taking-up rod in a direction away from the cabinet door.

[0020] By adopting the above technical solution, the lever-type transmission rod (lever arm difference design) can realize that the movement direction of the wire take-up rod is opposite to the movement direction of the unlocking member, and the large-scale movement of the wire take-up rod can be realized through the small-scale movement of the unlocking member; the reset elastic member resets the transmission rod, so that the wire take-up rod automatically retracts the wire harness, ensuring that the wire harness is stored in an orderly manner after the mounting plate is locked.

[0021] Optionally, the wire take-up rod is rotatably set on the transmission rod, and a limit piece is provided on the transmission rod. When the reset elastic piece drives the transmission rod to reset, the limit piece contacts the wire take-up rod, and the wire take-up rod is used to press the wire harness against the inner wall of the wire take-up box away from the cabinet door.

[0022] By adopting the above technical solution, the limiter fixes the position of the take-up rod to prevent the wire harness from loosening; the wire harness is pressed against the box wall to reduce shaking friction and extend the life of the cable.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. By placing the mounting plate in the control room and then sealing it with a cabinet door, the controller and buttons are protected, enhancing the equipment's waterproof, dustproof, and outdoor protection capabilities; 2. The elastic locking block automatically locks the mounting plate to prevent the mounting plate from accidentally rotating due to vibration or other reasons during operation of the photovoltaic grid-connected cabinet, which may affect the working stability of the photovoltaic grid-connected cabinet; 3. When the mounting plate is unlocked, the wire take-up lever is linked to release the wire harness to avoid breaking the cables when opening the mounting plate outside the control room. When the mounting plate is locked, the wire take-up lever retracts the wire harness into the junction box, improving the cleanliness and heat dissipation efficiency of the cabinet and reducing the requirements for the insulation layer of the wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of Example 1 of the present application.

[0025] Figure 2 This is a schematic diagram of the internal structure of the cabinet of Example 1 of the present application.

[0026] Figure 3 It is a structural schematic diagram highlighting the limiting plate in Example 1 of the present application.

[0027] Figure 4 This is a structural diagram of the cabinet door and observation window in Example 1 of the present application.

[0028] Figure 5 This is a top sectional view of Example 2 of the present application.

[0029] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0030] Figure 7This is a cross-sectional view of the junction box with the wire holes highlighted in Example 2 of the present application.

[0031] Figure 8 It is a structural schematic diagram highlighting the threading hole in Example 2 of the present application.

[0032] Explanation of the accompanying symbols: 1. Cabinet body; 11. Circuit breaker installation chamber; 12. Meter box installation chamber; 121. Wire threading hole; 13. Control room; 2. Mounting plate; 21. Locking slot; 3. Cabinet door; 31. Through hole; 4. Limiting plate; 5. Observation window; 6. Buckling plate; 7. Stud; 8. Rain shield; 81. Guide slope; 9. Unlocking structure; 91. Unlocking member; 92. Unlocking slope; 911. Transmission part; 912. Interference boss; 100. Fixing plate; 101. Telescopic slot; 102. Unlocking slot; 110. Locking block; 111. Sliding hole; 120. Locking elastic member; 130. Wire take-up box; 131. Wire inlet hole; 132. Wire outlet hole; 133. Through hole; 140. Wire take-up rod; 150. Transmission rod; 160. Reset elastic member; 170. Limiting member; 180. Fixing rod. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-8 This application is described in further detail.

[0034] Example 1: Example 1 of the present application discloses an outdoor photovoltaic grid-connected cabinet. Figure 1 and Figure 2 The outdoor photovoltaic grid-connected cabinet includes a cabinet body 1, which is provided with a circuit breaker installation room 11, a meter box installation room 12, and a control room 13. The height direction of the cabinet body 1 is set to the vertical direction, and the circuit breaker installation room 11, the meter box installation room 12, and the control room 13 are arranged from bottom to top, and the circuit breaker installation room 11, the meter box installation room 12, and the control room 13 are independently arranged. The circuit breaker installation room 11 is used for circuit breaker installation, the meter box installation room 12 is used for meter box installation, and the control room 13 is used for control module installation. A mounting plate 2 is provided in the control room 13, and the mounting plate 2 is used for button and controller installation. A cabinet door 3 is rotatably installed on the cabinet body 1 to close the circuit breaker installation room 11, the meter box installation room 12, and the control room 13, and the rotation axis of the cabinet door 3 extends in the vertical direction. There are three cabinet doors 3, and the three cabinet doors 3 correspond to the circuit breaker installation room 11, the meter box installation room 12, and the control room 13 respectively.

[0035] Reference Figure 2 and Figure 3, set the width direction of the cabinet body 1 to be the left-right direction, the arrangement direction of the cabinet door 3 and the cabinet body 1 to be the front-back direction, and the cabinet door 3 is located in front of the cabinet body 1. A fixing plate 100 is fixedly installed on the right inner wall of the control room 13, and the mounting plate 2 is rotatably mounted on the fixing plate 100 through the door hinge, and the rotation axis of the mounting plate 2 extends in the vertical direction. A limit plate 4 is fixedly installed on the fixing plate 100 and on the left inner wall of the control room 13. The limit plate 4 is located behind the mounting plate 2, and the two limit plates 4 are arranged in the left-right direction. The limit plate 4 is used to interfere with the mounting plate 2, so that the mounting plate 2 can rotate out of the control room 13 but cannot rotate into the control room 13.

[0036] Reference Figure 2 and Figure 4 , the front side walls of the cabinet door 3 corresponding to the control room 13 and the cabinet door 3 corresponding to the metering box installation room 12 are both provided with a through hole 31 extending in the front-to-back direction, and the through hole 31 is a square hole. An observation window 5 and a buckling plate 6 are installed on the rear side walls of the two cabinet doors 3. The vertical cross-section of the observation window 5 is square, and the side length of the observation window 5 is larger than the side length of the through hole 31. There are four buckling plates 6, and the four buckling plates 6 correspond to the four sides of the observation window 5 respectively. Studs 7 are fixedly installed on the rear side walls of the two cabinet doors 3, and mounting holes are provided on the buckling plates 6 for the studs 7 to be inserted and passed through. The buckling plates 6 can be detachably connected to the cabinet doors 3 by screwing nuts into the studs 7. The observation window 5 is located between the cabinet door 3 and the pressing plate 6. A square seal (not shown) is also pressed between the observation window 5 and the cabinet door 3. The pressing plate 6 presses the observation window 5 and the seal against the inner wall of the cabinet door 3 at the outer edge of the through hole 31. The seal can be made of rubber.

[0037] Reference Figure 1 A rain shield 8 is fixedly mounted on the top surface of the cabinet body 1. The horizontal cross-sectional dimension of the rain shield 8 is larger than that of the cabinet body 1. An inclined guide slope 81 is formed on the top surface of the rain shield 8. The guide slope 81 is inclined downward as it approaches the four sides of the cabinet body 1, so that the top surface of the rain shield 8 is in an inverted "V" shape.

[0038] The implementation principle of an outdoor photovoltaic grid-connected cabinet in Example 1 of the present application is as follows: on rainy days, the rain shield 8 blocks and diverts rainwater; the seal between the observation window 5 and the cabinet door 3 can play a role in waterproofing and dustproofing; when it is necessary to repair the electrical components in the control room 13, open the cabinet door 3 and flip the mounting plate 2 outward to facilitate maintenance operations on the inner wall of the control room 13. After the maintenance is completed, flip the mounting plate 2 back so that the mounting plate 2 is in conflict with the limit plate 4, and then close the cabinet door 3.

[0039] Example 2: Reference Figure 5 and Figure 6Unlike Example 1, this embodiment features a telescopic slot 101 extending horizontally on the surface of the fixing plate 100 near the mounting plate 2. A locking block 110 is slidably mounted within the telescopic slot 101. A locking slot 21 extending horizontally is also defined on the surface of the mounting plate 2 near the fixing plate 100. The locking block 110 is inserted into the locking slot 21. A locking spring 120 is press-fitted between the locking block 110 and the bottom wall of the telescopic slot 101. The locking spring 120 is a compression spring that drives the locking block 110 out of the telescopic slot 101 and into the locking slot 21.

[0040] Reference Figure 6 and Figure 7 The outdoor photovoltaic grid-connected cabinet also includes an unlocking structure 9, which is used to drive the lock block 110 to exit the lock slot 21. The unlocking structure 9 includes an unlocking slope 92 formed on the front surface of the lock block 110. The distance between the unlocking slope 92 and the bottom wall of the expansion slot 101 increases in the rearward direction. The unlocking slope 92 is formed by a chamfering process. A sliding hole 111 extending in the left-right direction is formed on the unlocking slope 92 of the lock block 110. The sliding hole 111 passes through the front and rear surfaces of the lock block 110. An unlocking slot 102 extending in the front-to-back direction is formed on the fixing plate 100, and the unlocking slot 102 is connected to the expansion slot 101. The unlocking structure 9 also includes an unlocking member 91 slidably mounted on the unlocking slot 102 in the front-to-back direction. The unlocking member 91 passes through the sliding hole 111 and out of the unlocking slot 102, and the unlocking member 91 can be slidably mounted in the sliding hole 111 in the left-to-right direction relative to the lock block 110. The unlocking member 91 is integrally formed with an interfering boss 912, which is configured to slidably interfering with the unlocking ramp 92, thereby driving the locking block 110 out of the lock slot 21 when the unlocking member 91 moves backward. In other embodiments, the unlocking structure 9 may further include an unlocking drive source, eliminating the need for the unlocking member 91 and the unlocking ramp 92, and the unlocking drive source drives the locking block 110 out of the lock slot 21.

[0041] Reference Figure 7 and Figure 8The lower bottom walls of the meter box installation chamber 12 and the control chamber 13 are both provided with wire holes 121 (only the wire hole 121 in the control chamber 13 is shown in the figure). The mounting plate 2 is used for installing the controller. The controller is electrically connected to a wiring harness, which is used to pass through the wire holes 121 to enter the meter box installation chamber 12 and the circuit breaker installation chamber 11, thereby electrically connecting to the electrical components in the meter box installation chamber 12 and the circuit breaker installation chamber 11. A wire receiving box 130 is fixedly installed on one of the inner walls of the control chamber 13 on the left and right sides near the wire hole 121. The front surface of the wire receiving box 130 is provided with a wire inlet hole 131, and the lower bottom surface of the wire receiving box 130 is provided with a wire outlet hole 132. The wiring harness of the controller is used to enter the wire receiving box 130 through the wire inlet hole 131, then pass through the wire outlet hole 132, and then pass through the wire hole 121 to enter other chambers. In this embodiment, the wire take-up box 130 is fixedly mounted on the right inner wall of the control room 13 .

[0042] Reference Figure 6-8 A fixed rod 180 is fixedly mounted on the left side wall of the wire take-up box 130. The fixed rod 180 extends in the left-right direction. A transmission rod 150 is rotatably mounted on the fixed rod 180. The rotation axis of the transmission rod 150 extends in the vertical direction. The unlocking member 91 includes a transmission portion 911. The transmission portion 911 passes through the unlocking slot 102 and extends into the control room 13. One end of the transmission rod 150 is used to interfere with the transmission portion 911, and the other end is mounted on the wire take-up rod 140. The rotation axis of the transmission rod 150 is located between the wire take-up rod 140 and the transmission portion 911. The distance between the rotation axis of the transmission rod 150 and the transmission portion 911 is smaller than the distance between the rotation axis of the transmission rod 150 and the wire take-up rod 140, that is, the transmission rod 150 is a labor-intensive lever.

[0043] Reference Figure 7 A return spring 160 is installed between the transmission rod 150 and the fixed rod 180. The return spring 160 is a torsion spring and is used to drive the transmission rod 150 to reset, causing the end of the transmission rod 150 near the transmission portion 911 to rotate forward. The unlocking member 91 moves backward, driving the transmission rod 150 to rotate. When the unlocking member 91 moves to the final position, the rear side wall of the transmission portion 911 does not interfere with the transmission rod 150, while the right side wall of the transmission portion 911 interferes with the transmission rod 150. As a result, the transmission rod 150 cannot be reset under the action of the return spring 160, thus achieving self-locking between the unlocking member 91 and the transmission rod 150.

[0044] Reference Figure 7 and Figure 8The left side wall of the wire take-up box 130 is provided with a through-hole 133 extending in the front-to-back direction. Through-hole 133 penetrates the left side wall of the wire take-up box 130, and a wire take-up lever 140 is slidably mounted within the through-hole 133. The wire take-up lever 140 passes through the through-hole 133 and extends into the wire take-up box 130. The wire take-up lever 140 is rotatably mounted on a transmission rod 150, with the rotation axis of the wire take-up lever 140 extending in the vertical direction. The rotation of the transmission rod 150 drives the wire take-up lever 140 to move in the front-to-back direction within the wire take-up box 130. A limit member 170 is integrally formed on the transmission rod 150. When the transmission rod 150 rotates until the wire take-up lever 140 is located behind the wire take-up box 130, the limit member 170 contacts the wire take-up lever 140, restricting its rotation. This allows the wire take-up lever 140 to extend in the left-to-right direction, pressing the wire harness against the rear inner wall of the wire take-up box 130. In other embodiments, the take-up rod 140 may be fixedly mounted on the transmission rod 150 , or the transmission rod 150 may be directly extended, and the extended portion of the transmission rod 150 replaces the take-up rod 140 .

[0045] The implementation principle of an outdoor photovoltaic grid-connected cabinet in Example 2 of the present application is as follows: when the staff needs to inspect the control room 13, they first open the cabinet door 3 and press the unlocking piece 91 backward. The interference boss 912 on the unlocking piece 91 slides and interferes with the unlocking inclined surface 92, thereby overcoming the elastic force of the locking elastic piece 120 to drive the locking block 110 to move to the left and exit the lock groove 21, thereby unlocking the mounting plate 2; at the same time, the transmission part 911 slides and interferes with the end of the transmission rod 150, driving the transmission rod 150 to rotate, thereby driving the wire-taking rod 140 to move forward, so that the wire-taking rod 140 releases the wiring harness. When the staff opens the mounting plate 2, they can drive the wiring harness to be pulled out from the wire entry hole 131 to prevent the wiring harness from being torn off. After the inspection is completed, the staff will install the mounting plate 2 back into the control room 13 and pull out the unlocking piece 91 forward. The locking block 110 is inserted into the locking slot 21 under the elastic action of the locking elastic piece 120 to lock the mounting plate 2. At the same time, the transmission rod 150 rotates and resets under the action of the reset elastic piece 160, driving the wire-taking rod 140 to move backward. The wire-taking rod 140 contacts the wiring harness and retracts the wiring harness into the wiring box 130 until the wire-taking rod 140 contacts the limit piece 170. At this time, the wire-taking rod 140 presses the wiring harness against the rear inner wall of the wiring box 130 to avoid shaking of the wiring harness due to vibration and other factors.

[0046] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An outdoor photovoltaic grid-connected cabinet, characterized by: The invention comprises a cabinet (1), wherein the cabinet (1) is provided with a circuit breaker installation chamber (11), a meter box installation chamber (12) and a control chamber (13), wherein the circuit breaker installation chamber (11) is used for installing the circuit breaker, the meter box installation chamber (12) is used for installing the meter box, and the control chamber (13) is used for installing the control module. The control chamber (13) is provided with a mounting plate (2), and the mounting plate (2) is used for installing buttons and controllers. The cabinet (1) is provided with a cabinet door (3) for closing the circuit breaker installation chamber (11), the meter box installation chamber (12) and the control chamber (13).

2. The outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that: The mounting plate (2) is rotatably mounted on the inner wall of the control chamber (13). A limit plate (4) is provided on the inner wall of the control chamber (13). The limit plate (4) is used to abut against the mounting plate (2).

3. The outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that: An observation window (5) and a pressing plate (6) are provided on the surface of the cabinet door (3) close to the inner cavity of the cabinet body (1); a through hole (31) is provided on the surface of the cabinet door (3) away from the inner cavity of the cabinet body (1); the pressing plate (6) is detachably connected to the cabinet body (1); the pressing plate (6) is used to press the observation window (5) against the surface of the cabinet door (3) at the outer edge of the through hole (31); and a sealing member is press-fitted between the observation window (5) and the cabinet door (3).

4. The outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that: A rain shield (8) is provided on the top of the cabinet (1), wherein the projection of the rain shield (8) in the height direction of the cabinet (1) covers the projection of the cabinet (1) in the height direction of the cabinet (1), and an inclined guide slope (81) is formed on the surface of the rain shield (8) away from the cabinet (1), wherein the distance between the guide slope (81) and the top wall of the cabinet (1) decreases in a direction approaching the side wall of the cabinet (1).

5. The outdoor photovoltaic grid-connected cabinet according to claim 1, characterized in that: The invention also includes an unlocking structure (9), wherein a fixing plate (100) is provided on the inner wall of the control chamber (13), the mounting plate (2) is rotatably arranged on the fixing plate (100), a telescopic groove (101) is provided on the surface of the fixing plate (100) close to the mounting plate (2), a locking block (110) is slidably arranged in the telescopic groove (101), a locking groove (21) is provided on the surface of the mounting plate (2) close to the fixing plate (100), a locking elastic member (120) is provided between the locking block (110) and the bottom wall of the telescopic groove (101), the locking elastic member (120) is used to drive the locking block (110) to pop out of the telescopic groove (101) and insert into the locking groove (21), and the unlocking structure (9) is used to drive the locking block (110) to exit the locking groove (21).

6. The outdoor photovoltaic grid-connected cabinet according to claim 5, characterized in that: The unlocking structure (9) comprises an unlocking member (91) and an unlocking inclined surface (92); an unlocking groove (102) is provided on the surface of the fixing plate (100) close to the cabinet door (3); the unlocking groove (102) is communicated with the telescopic groove (101); the unlocking member (91) is slidably arranged in the unlocking groove (102); the unlocking inclined surface (92) is formed on the surface of the locking block (110) close to the cabinet door (3); the distance between the unlocking inclined surface (92) and the bottom wall of the telescopic groove (101) increases in a direction away from the cabinet door (3); and the unlocking member (91) is used to slide against the unlocking inclined surface (92).

7. The outdoor photovoltaic grid-connected cabinet according to claim 6, characterized in that: A wire take-up box (130) is provided on the inner wall of the control room (13), a wire inlet hole (131) is provided on the surface of the wire take-up box (130) facing the cabinet door (3), and a wire outlet hole (132) is provided on the bottom surface of the wire take-up box (130). A wire take-up rod (140) is movably provided in the wire take-up box (130), and the wire take-up rod (140) moves in a direction close to or away from the cabinet door (3). The wire take-up rod (140) is used to be located on a side of the wire harness close to the cabinet door (3) and to contact the wire harness to drive the wire harness to be retracted from the wire inlet hole (131) into the wire harness box (130). When the unlocking member (91) drives the lock block (110) to exit the lock slot (21), the unlocking member (91) is used to drive the wire take-up rod (140) to move in a direction close to the cabinet door (3) to release the wire harness.

8. The outdoor photovoltaic grid-connected cabinet according to claim 7, characterized in that: The unlocking groove (102) passes through the surface of the fixing plate (100) away from the cabinet door (3), the unlocking member (91) includes a transmission part (911), the transmission part (911) passes through the unlocking groove (102), a transmission rod (150) is rotatably mounted on the wire take-up box (130), the rotation axis of the transmission rod (150) extends along the height direction of the cabinet body (1), the wire take-up rod (140) is provided on the transmission rod (150), the transmission part (911) is used to interfere with the transmission rod (150), the The rotation axis of the transmission rod (150) is located between the wire take-up rod (140) and the transmission part (911), and the distance between the rotation axis of the transmission rod (150) and the transmission part (911) is smaller than the distance between the rotation axis of the transmission rod (150) and the wire take-up rod (140). A reset elastic member (160) is provided between the transmission rod (150) and the wire take-up box (130), and the reset elastic member (160) is used to drive the transmission rod (150) to rotate with the wire take-up rod (140) in a direction away from the cabinet door (3).

9. The outdoor photovoltaic grid-connected cabinet according to claim 8, characterized in that: The wire take-up rod (140) is rotatably mounted on the transmission rod (150), and a position limiting member (170) is provided on the transmission rod (150). When the resetting elastic member (160) drives the transmission rod (150) to reset, the position limiting member (170) contacts the wire take-up rod (140), and the wire take-up rod (140) is used to press the wire harness against the inner wall of the wire take-up box (130) away from the cabinet door (3).

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