Power supply box and power supply device

Abstract

The utility model discloses a power supply box and a power supply device, and relates to the technical field of electrical equipment. The power supply box comprises a surface cover, a bottom shell and an access cover, the surface cover and the bottom shell are connected and jointly define a containing cavity, and a power supply assembly is installed in the containing cavity. An operation window is formed in the surface cover, the access cover is rotatably connected to the surface cover, and the access cover can open or close the operation window by rotating relative to the surface cover. When wiring and other operations need to be carried out, an operator does not need to disassemble or lift up the whole surface cover, but turns over the access cover and opens the operation window to complete wiring, wire removal and other operations, so that the operation is more convenient, and related operations can be completed by a single person. And moreover, for operators and equipment, the safety is relatively high. The power supply device provided by the embodiment of the utility model comprises the power supply assembly and the power supply box, so that the power supply device has the characteristics of high safety and convenience in wire connection, disconnection and maintenance.

Description

Technical Field

[0001] This application relates to the technical field of electrical equipment, and more particularly, to a power supply box and a power supply device. Background Art

[0002] In the prior art, the power supply components of high-power electrical equipment are often arranged in a power supply box. For example, the power supply components of commercial billboards or landscape lights are integrated in the power supply box for operation. When the power supply components of the existing power supply box need to be wired, disconnected, or other maintenance operations are required, the entire face cover of the power supply box needs to be removed or lifted, which brings inconvenience to the operation. And completely opening the power supply box will expose the high-power power supply components as a whole, which will also bring relatively high safety risks to the equipment and personnel. Summary of the Utility Model

[0003] The purpose of this application is to provide a power supply box and a power supply device, which can facilitate the operator to wire and disconnect the power supply components, and at the same time have relatively high safety.

[0004] The embodiments of this application are implemented as follows:

[0005] In a first aspect, this application provides a power supply box, including a face cover, a bottom shell, and a maintenance cover. The face cover and the bottom shell are connected and jointly enclose a receiving cavity for installing power supply components. An operation window is opened on the face cover, and the maintenance cover is rotatably connected to the face cover. The maintenance cover can open or close the operation window by rotating relative to the face cover.

[0006] In an alternative embodiment, the connection between the maintenance cover and the face cover has a rotational damping, so that the face cover can be maintained in the position of opening the operation window.

[0007] In an alternative embodiment, the two ends of the maintenance cover in the extending direction of its rotation axis are respectively rotatably connected to the face cover, and at least one end of the maintenance cover is rotatably connected to the face cover by a rivet, and the rivet is used to provide rotational damping.

[0008] In an alternative embodiment, the two ends of the maintenance cover in the extending direction of its rotation axis are respectively rotatably connected to the face cover. The maintenance cover has opposite first and second ends in a direction perpendicular to its rotation axis. The first end is closer to the rotation axis of the maintenance cover than the second end, and an insulating member is provided on the first end.

[0009] In an alternative embodiment, the insulating member is strip-shaped and the extending direction of the insulating member is consistent with the extending direction of the rotation axis of the maintenance cover.

[0010] In an alternative embodiment, when the maintenance cover closes the operation window, the insulating member adheres to the inner wall of the face cover.

[0011] In an optional embodiment, the bottom shell includes a bottom plate and a side plate arranged at the edge of the bottom plate, the surface cover is detachably connected to the side plate, and a recessed portion recessed into the accommodating cavity is provided on the side plate, and the recessed portion is used to abut the heating element in the power supply assembly.

[0012] In an optional embodiment, a locking hole is provided on the recessed portion and passes through the recessed portion. The power box also includes a locking screw and a limit member. The limit member is located in the accommodating cavity. The limit member is connected to the locking hole through the locking screw. The limit member is used to press the heating element against the recessed portion.

[0013] In an optional embodiment, the surface cover is detachably connected to the bottom shell by screws;

[0014] Alternatively, the front cover is snap-fitted to the bottom shell via a snap-fitting structure;

[0015] Alternatively, the face cover is magnetically connected to the bottom shell via a magnetic attraction member.

[0016] In a second aspect, the present application provides a power supply device, comprising a power supply assembly of the aforementioned embodiment and a power supply box of any one of the aforementioned embodiments, wherein the power supply assembly is disposed in a receiving cavity of the power supply box.

[0017] The beneficial effects of the embodiments of the present application are:

[0018] The power box provided by the present application includes a face cover, a bottom shell and an inspection cover, the face cover and the bottom shell are connected and together form a receiving chamber, and the receiving chamber is used to install the power supply assembly. An operation window is provided on the face cover, and the inspection cover is rotatably connected to the face cover, and the inspection cover can open or close the operation window by rotating relative to the face cover. When wiring and other operations are required, the operator does not need to remove or lift the entire face cover, but flips the inspection cover and opens the operation window, and the wiring and disconnection operations can be completed. Therefore, the operation is more convenient and is conducive to a single person to complete the relevant operations. In addition, since the wiring and disconnection operations can be performed only by opening the operation window, the entire power supply assembly will not be exposed, and other parts of the power supply assembly are not easily accidentally touched by external people or objects. The operator's related operations on the power supply assembly are also limited to the range of the operation window, so it has higher safety for the operator and the equipment.

[0019] The power supply device provided in the embodiment of the present application includes a power supply component and the above-mentioned power supply box, and therefore has the characteristics of high safety and convenient wiring and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic diagram of the power supply device in a closed maintenance cover in an embodiment of the present application;

[0022] Figure 2 It is a schematic diagram of the power supply device in an opened maintenance cover in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the inner side of the front cover and the maintenance cover in an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the power supply device omitting the front cover and the maintenance cover in an embodiment of the present application.

[0025] Icons: 100 - power supply box; 101 - wiring window; 110 - bottom case; 111 - bottom plate; 112 - side plate; 113 - recessed part; 114 - locking hole; 115 - limiting part; 120 - front cover; 121 - ventilation hole; 122 - operation window; 123 - folded edge; 124 - supporting part; 130 - maintenance cover; 130a - first end; 130b - second end; 131 - connecting part; 132 - rivet; 133 - insulating part; 200 - power supply component; 210 - circuit board; 220 - heating element. Detailed Embodiments

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Generally, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] When the power supply assembly 200 of the existing power supply box 100 needs to be wired, disconnected or other maintenance operations are required, the entire cover 120 of the power supply box 100 needs to be removed or lifted, which brings inconvenience to the operation. Moreover, fully opening the power supply box 100 will cause the high-power power supply assembly 200 to be exposed as a whole, and external people or objects are likely to accidentally touch the power supply assembly 200, which will also bring higher safety risks to the equipment and operators.

[0033] To this end, the embodiment of the present application provides a power box 100 and a power device. By providing an operation window 122 and an inspection cover 130 on the cover 120, the operator can perform wiring and disconnection operations without removing or lifting the entire cover 120, which not only provides convenience for the operator's related operations, but also ensures the safety of the operator and the internal power supply component 200. The embodiment of the present application also provides a power supply device, including the above-mentioned power box 100 and the power supply component 200 arranged in the power box 100.

[0034] Figure 1 This is a schematic diagram of a power supply device in one embodiment of the present application when the inspection cover 130 is closed; Figure 2 This is a schematic diagram of a power supply device in one embodiment of the present application when the inspection cover 130 is opened. Figure 1 and Figure 2 As shown, the power supply device provided in the embodiment of the present application includes a power supply box 100 and a power supply assembly 200 disposed in the power supply box 100. The power supply box 100 plays a role in protecting the power supply assembly 200, and also prevents people from accidentally touching the power supply assembly 200, thereby protecting people's safety. A wiring window 101 is provided at one end of the power supply box 100, and a wire (not shown in the figure) connected to the power supply assembly 200 can be led out from the wiring window 101.

[0035] In the embodiment of the present application, the power box 100 includes a cover 120, a bottom shell 110, and an inspection cover 130. The cover 120 and the bottom shell 110 are connected and together form a receiving cavity, and the receiving cavity is used to install the power supply component 200. An operation window 122 is provided on the cover 120, and the inspection cover 130 is rotatably connected to the cover 120. The inspection cover 130 can open or close the operation window 122 by rotating relative to the cover 120.

[0036] In the embodiment of the present application, the wiring window 101 of the power box 100 is formed by the cover 120 and the bottom shell 110, and the operation window 122 is opened on the cover 120 at one end close to the wiring window 101. In this embodiment, the operation window 122 is a notch on the cover 120, and the open side of the operation window 122 is adjacent to the wiring window 101.

[0037] In the embodiment of the present application, the position of the operation window 122 corresponds to the wiring position on the power supply assembly 200. Therefore, when the operation window 122 is opened, the operator can insert a tool (such as a screwdriver) into the accommodating cavity of the power supply box 100 through the operation window 122 to perform operations such as wiring and disconnecting. When the inspection cover 130 is closed, it can play a protective role to prevent people or objects from accidentally touching the wiring position of the power supply assembly 200, thereby improving safety. When operations such as wiring and disconnecting are required, the operation window 122 can be opened by simply flipping the inspection cover 130.

[0038] In an alternative embodiment, the connection between the access cover 130 and the front cover 120 has rotational damping, enabling the front cover 120 to be maintained at the position of the open operation window 122. It should be understood that if the rotational connection between the access cover 130 and the front cover 120 is smooth and the damping is small, after flipping the access cover 130 to open the operation window 122, the operator needs to support the access cover 130 by hand or other tools to prevent it from flipping back under the action of gravity and closing the operation window 122. However, this consumes manpower and material resources and causes inconvenience in maintenance operations. Especially when the power supply box 100 is vertically arranged and the wiring window 101 and the operation window 122 are at the lower end of the power supply box 100, the opened access cover 130 is more likely to flip back and close the operation window 122. Therefore, in this embodiment, by providing rotational damping at the connection between the access cover 130 and the front cover 120, the opened access cover 130 can be maintained at the current position, keeping the operation window 122 open, and the access cover 130 is not easily flipped back under the action of gravity to close the operation window 122.

[0039] Figure 3 It is a schematic diagram of the inner sides of the front cover 120 and the access cover 130 in an embodiment of the present application. As Figure 3 shown, in this embodiment, the two ends of the access cover 130 in the extending direction of its rotation axis are respectively rotationally connected to the front cover 120, and at least one end of the access cover 130 is rotationally connected to the front cover 120 by a rivet 132, and the rivet 132 is used to provide rotational damping. It can be understood that the rivet 132 can generate a certain pre-tightening force through deformation, enabling the access cover 130 and the front cover 120 to be tightly connected, and there is frictional damping when they rotate relative to each other. In the embodiment of the present application, when the power supply box 100 is normally installed on the wall, the rotation axis of the access cover 130 often extends horizontally, and the left and right ends of the access cover 130 are rotationally connected to the front cover 120.

[0040] Specifically in this embodiment, both ends of the access cover 130 in the extending direction of its rotation axis are rotationally connected to the front cover 120 by rivets 132, and two rivets 132 are used to provide rotational damping. In alternative other embodiments, one end of the access cover 130 can be rotationally connected to the front cover 120 in the form of insertion and cooperation between a shaft and a hole, and the other end is rotationally connected to the front cover 120 by a rivet 132, that is, only one rivet 132 is used to provide rotational damping.

[0041] In alternative other embodiments, at least one of the access cover 130 or the front cover 120 can be provided with a magnetic attracting member. When the access cover 130 closes the operation window 122, the access cover 130 is stably maintained at the position of closing the operation window 122 by the adsorption force of the magnetic attracting member. When it is necessary to open the access cover 130, it is necessary to overcome the magnetic attraction of the magnetic attracting member to flip the access cover 130.

[0042] In this embodiment, two edges of the operation window 122 spaced apart in the direction of extension of the rotation axis of the inspection cover 130 are respectively provided with a support portion 124, and two ends of the inspection cover 130 in the direction of extension of its rotation axis are respectively provided with two connecting portions 131, and the two connecting portions 131 are respectively rotatably connected to the two supporting portions 124 through rivets 132. Optionally, the supporting portion 124 and the cover 120 are an integrated structure, the cover 120 can be a sheet metal part, and the supporting portion 124 is formed by a partial bending of the cover 120; similarly, the connecting portion 131 can also be formed by a partial bending of the inspection cover 130.

[0043] It should be understood that in other optional embodiments, the inspection cover 130 and the cover 120 can also be rotatably connected in other ways and have rotational damping. For example, the inspection cover 130 is rotatably connected to the cover 120 through a hinge (or hinge) with sufficient damping.

[0044] The inspection cover 130 has a first end 130a and a second end 130b opposite to each other in a direction perpendicular to the rotation axis thereof. The first end 130a is closer to the rotation axis of the inspection cover 130 than the second end 130b, and an insulating member 133 is disposed on the first end 130a. It can be understood that the first end 130a of the inspection cover 130 is closer to one edge of the operation window 122 (the edge is parallel to the rotation axis of the inspection cover 130, hereinafter referred to as the lateral edge, Figure 3 The second end 130b of the access cover 130 is covered by the insulating member 133 in the middle of the access cover 130 (covered by the insulating member 133); and when the access cover 130 closes the operation window 122, its second end 130b is close to the open side of the operation window 122 (the side is adjacent to the wiring window 101 and has no edge). By providing the insulating member 133, the safety of the operator when maintaining the power supply assembly 200 can be improved. Specifically, when the operator uses tools such as a screwdriver to connect or remove wires, if the tool is moved to the lateral edge of the operation window 122, the tool will be blocked by the insulating member 133 and will not directly contact the cover 120. Since the cover 120 of the power supply box 100 is usually made of metal, if the tool used for wiring and removing wires contacts the circuit at the wiring position of the power supply assembly 200 and contacts the cover 120 at the same time, the circuit will be connected to the cover 120, resulting in a safety risk (such as a short circuit). Therefore, by providing the insulating member 133, it is possible to avoid contact between the tool and the cover 120 and reduce safety risks.

[0045] In this embodiment, the insulating member 133 is strip-shaped and the extending direction of the insulating member 133 is the same as the extending direction of the rotation axis of the inspection cover 130. In this embodiment, the inspection cover 130 is long strip-shaped, its length direction is parallel to the rotation axis, the first end 130a and the second end 130b of the inspection cover 130 are the two ends in the width direction, the edge of the first end 130a extends along the length direction of the inspection cover 130, and the insulating member 133 is installed on the inspection cover 130 along the edge of the first end 130a. The insulating member 133 can be made of insulating materials such as rubber and resin.

[0046] As Figure 3 shown, when the inspection cover 130 closes the operation window 122, the insulating member 133 adheres to the inner wall of the face cover 120, specifically, adheres to the inner wall at the transverse edge of the operation window 122. The insulating member 133 will not interfere with the face cover 120, so it will not affect the closing of the inspection cover 130; and when the inspection cover 130 is opened, the insulating member 133 is separated from the inner wall of the face cover 120, and can play a role in blocking the contact between the tool and the transverse edge of the operation window 122.

[0047] In this embodiment, a plurality of ventilation holes 121 are further provided on the face cover 120. By providing the ventilation holes 121, the air convection in the power supply box 100 can be enhanced, and the heat dissipation effect of the power supply assembly 200 can be improved.

[0048] Figure 4 It is a schematic diagram of a power supply device in an embodiment of the present application omitting the face cover 120 and the inspection cover 130. As Figure 4 shown, in this embodiment, the bottom case 110 includes a bottom plate 111 and side plates 112 provided at the edge of the bottom plate 111. The face cover 120 is detachably connected to the side plates 112. A recessed portion 113 recessed into the accommodation cavity is provided on the side plates 112. The recessed portion 113 is used to abut against the heating element 220 in the power supply assembly 200. In this embodiment, the bottom plate 111 and the side plates 112 of the bottom case 110 are made of metal and integrally formed, and the power supply assembly 200 is installed on the bottom plate 111. By providing the recessed portion 113 recessed inward on the side plates 112, the side plates 112 can directly contact the heating element 220, and the heat of the heating element 220 can be transferred to the bottom case 110 by conduction, thereby increasing the heat dissipation effect. In the case where the recessed portion 113 is not provided, additional heat dissipation devices are required to fill the gap between the heating element 220 and the side plates 112, so the device usage will increase.

[0049] In this embodiment, a locking hole 114 penetrating the recessed portion 113 is provided on the recessed portion 113. The power supply box 100 further includes a locking screw (not shown in the figure) and a limiting member 115. The limiting member 115 is located in the accommodation cavity. The limiting member 115 is connected to the locking hole 114 through the locking screw. The limiting member 115 is used to press the heating element 220 against the recessed portion 113. Specifically, the locking screw passes through the locking hole 114 from the outside of the bottom case 110 and extends into the accommodation cavity, and is screwed with the limiting member 115. There is a certain gap between the limiting member 115 and the recessed portion 113 for clamping the heating element 220. By screwing the locking screw, the limiting member 115 can tightly press the heating element 220 against the recessed portion 113, ensuring the stability of the thermal connection between the heating element 220 and the recessed portion 113 and ensuring the heat dissipation effect. In other alternative embodiments, the locking hole 114 can also be a threaded hole, and the locking screw passes through the limiting member 115 and is screwed with the locking hole 114.

[0050] In this embodiment, the power supply assembly 200 includes a circuit board 210 and a plurality of components arranged on the circuit board 210. The plurality of components include a heating element 220. The circuit board 210 can be connected to the bottom plate 111 through fasteners. The heating element 220 is a component that generates heat in the power supply assembly 200, such as a MOS transistor.

[0051] In the embodiment of the present application, the face cover 120 can be detachably connected to the bottom case 110 through screws; alternatively, the face cover 120 is snap-connected to the bottom case 110 through a snap structure; or the face cover 120 is magnetically connected to the bottom case 110 through a magnetic member. Specifically, in this embodiment, the face cover 120 includes a folded edge 123 provided at the edge, and the folded edge 123 is perpendicular to the main body portion of the face cover 120. The folded edge 123 is fixedly connected to the side plate 112 through screws (not shown in the figure). In the case where the face cover 120 is snap-connected to the bottom case 110 through a snap structure, one of the face cover 120 and the bottom case 110 is provided with a male buckle (such as a boss), and the other is provided with a female buckle (such as a pit), and the male buckle and the female buckle are snap-fitted, which can also realize the detachable connection between the face cover 120 and the bottom case 110.

[0052] In the power supply device provided in this embodiment, since the operating window 122 and the inspection cover 130 are provided on the cover 120 of the power supply box 100, when the operator needs to perform wiring, wiring removal or other maintenance operations, the inspection cover 130 can be flipped to open the operating window 122 and perform related operations without removing the entire cover 120, thereby improving efficiency and ensuring equipment and personal safety. Further, by providing a rotation damping between the inspection cover 130 and the cover 120, it is possible to prevent the inspection cover 130 from flipping back under the action of gravity after it is opened, so that it can be kept in the state of punching the operation window 122, so that the operator does not need to manually support the inspection cover 130 to perform related operations, thereby improving convenience. Further, by providing an insulating member 133, it is possible to prevent the tool used by the operator from contacting the cover 120, thereby avoiding the risk of short circuit caused by the metal tool accidentally touching the cover 120 when operating at the wiring position. Furthermore, by providing the recessed portion 113 , it is possible to directly contact the heat generating element 220 in the power source assembly 200 , thereby improving the heat dissipation efficiency of the power source assembly 200 .

[0053] In summary, the embodiment of the present application provides a power box 100 and a power device. The power box 100 includes a cover 120, a bottom shell 110 and an inspection cover 130. The cover 120 and the bottom shell 110 are connected and together form a receiving chamber, and the receiving chamber is used to install the power supply component 200. An operation window 122 is provided on the cover 120, and the inspection cover 130 is rotatably connected to the cover 120. The inspection cover 130 can open or close the operation window 122 by rotating relative to the cover 120. When wiring and other operations are required, the operator does not need to remove or lift the entire cover 120, but flips the inspection cover 130 and opens the operation window 122, so that wiring and disconnection operations can be completed. Therefore, the operation is more convenient, which is conducive to a single person completing related operations. In addition, since the connection and disconnection operations can be performed simply by opening the operation window 122, the entire power supply assembly 200 will not be exposed, and other parts of the power supply assembly 200 are not easily accidentally touched by external people or objects. The operator's related operations on the power supply assembly 200 are also limited to the range of the operation window 122. Therefore, it is safer for the operator and the equipment.

[0054] The power supply device provided in the embodiment of the present application includes a power supply assembly 200 and the above-mentioned power supply box 100, and therefore has the characteristics of high safety and convenient connection, disconnection and maintenance.

[0055] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A power supply box, characterized in that, It includes a face cover (120), a bottom case (110) and a maintenance cover (130). The face cover (120) and the bottom case (110) are connected to jointly form an accommodation cavity, and a power supply assembly (200) is installed in the accommodation cavity. An operation window (122) is provided on the face cover (120). The maintenance cover (130) is rotatably connected to the face cover (120), and the operation window (122) can be opened or closed by rotating the maintenance cover (130) relative to the face cover (120).

2. The power supply box according to claim 1, wherein A rotational damping exists at the connection between the maintenance cover (130) and the face cover (120), so that the face cover (120) can be maintained at the position where the operation window (122) is opened.

3. The power supply box according to claim 2, characterized in that, Both ends of the maintenance cover (130) in the extending direction of its rotation axis are respectively rotatably connected to the face cover (120), and at least one end of the maintenance cover (130) is rotatably connected to the face cover (120) by a rivet (132), and the rivet (132) is used to provide the rotational damping.

4. The power supply box according to claim 1, wherein, Both ends of the maintenance cover (130) in the extending direction of its rotation axis are respectively rotatably connected to the face cover (120). The maintenance cover (130) has opposite first end (130a) and second end (130b) in the direction perpendicular to its rotation axis. The first end (130a) is closer to the rotation axis of the maintenance cover (130) than the second end (130b), and an insulating member (133) is provided on the first end (130a).

5. The power supply box according to claim 4, wherein, The insulating member (133) is strip-shaped and the extending direction of the insulating member (133) is consistent with the extending direction of the rotation axis of the maintenance cover (130).

6. The power supply box according to claim 5, wherein When the maintenance cover (130) closes the operation window (122), the insulating member (133) adheres to the inner wall of the face cover (120).

7. The power supply box according to any one of claims 1-6, characterized in that, The bottom case (110) includes a bottom plate (111) and side plates (112) provided at the edge of the bottom plate (111). The face cover (120) is detachably connected to the side plates (112). A recessed portion (113) recessed into the accommodation cavity is provided on the side plates (112), and the recessed portion (113) is used to abut against a heating element (220) in the power supply assembly (200).

8. The power supply box according to claim 7, wherein A locking hole (114) penetrating through the recessed portion (113) is provided on the recessed portion (113). The power supply box (100) further includes a locking screw and a limiting member (115). The limiting member (115) is located in the accommodation cavity. The limiting member (115) is connected to the locking hole (114) by the locking screw, and the limiting member (115) is used to press the heating element (220) against the recessed portion (113).

9. The power supply box according to any one of claims 1-6, characterized in that, The face cover (120) is detachably connected to the bottom case (110) by screws; or, the face cover (120) is snap-connected to the bottom case (110) through a snap connection structure; or, the face cover (120) is magnetically connected to the bottom case (110) by a magnetic member.

10. A power supply device, characterized in that, Comprising a power supply component (200) and the power supply box (100) according to any one of claims 1-9, the power supply component (200) is disposed in the accommodation cavity of the power supply box (100).

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