CN220509182U - High-voltage junction box - Google Patents

Abstract

The utility model discloses a high-voltage junction box which comprises a lower box body, a sealing structure and an upper box body, wherein the upper end of the lower box body is in an open arrangement, the sealing structure comprises a sealing ring and a fixing ring, the fixing ring is detachably arranged on the open end of the lower box body, the sealing ring is arranged on the inner side wall of the fixing ring, the two ends of the sealing ring along the upper and lower directions are protruded out of the fixing ring, the sealing ring and the fixing ring are molded into a whole through an injection molding machine, the upper box body is covered on the open end of the lower box body, the sealing ring and the fixing ring are clamped together with the lower box body, and the lower end of the upper box body is in an open arrangement. The arrangement can greatly shorten the assembly period of the high-voltage junction box, so that the assembly work is simpler, and the production cost is reduced.

Description

High-voltage junction box

Technical Field

The utility model relates to the technical field of new energy electric automobiles, in particular to a high-voltage junction box.

Background

In the current new forms of energy electric motor car field, more spare part uses high voltage power supply, only the vehicle air conditioner driver's cabin refrigeration compressor heats the WPTC whole car and just needs to provide two way high pressure and give air conditioning system power supply, but the high pressure interface that whole car can export is very limited, consequently needs to carry out high pressure separated time work through the high pressure separated time box.

In the prior art, the high-voltage junction box is required to have good waterproof performance because various parts are contained in the high-voltage junction box, for example, CN107807426B discloses an upright cap-buckle type optical cable junction box with an electronic tag, which comprises a cap-buckle type upper cover, a sealing ring, an end cover, a locking mechanism, a fiber-melting and light-splitting fiber-splitting component in the box, the electronic tag and a fixing structure; the cap buckle type upper cover comprises a box body, a mounting seat and a mounting opening; the sealing ring is embedded in the periphery of the mounting seat; the end cover is connected with the fiber melting and splitting component in the box to form a plug-in component; the plug-in assembly is inserted into the cap-buckle type upper box body through the opening and enables the end cover to be tightly abutted with the sealing ring, and the locking mechanism enables the end cover to be locked and fixed with the mounting seat; setting the electronic tag on the long edge of the mounting port; the fixing structure is used for fixing the optical cable junction box on an external fixing body.

However, the sealing ring of the existing junction box is usually a rubber sealing ring, the rubber sealing ring is inlaid in the annular groove, however, in order to ensure the sealing effect, the length of the rubber sealing ring is required to be smaller than that of the annular groove, and the sealing ring is required to be stretched when inlaid so as to influence the assembly period of the junction box, so that the assembly work is troublesome and the production cost is high.

Disclosure of Invention

The utility model mainly aims to provide a high-voltage junction box, which aims to solve the problem of the existing high-voltage junction box.

To achieve the above object, the present utility model provides a high voltage junction box, wherein the high voltage junction box includes:

the upper end of the lower box body is opened;

the sealing structure comprises a sealing ring and a fixing ring, the fixing ring is detachably arranged at the open end of the lower box body, the sealing ring is arranged on the inner side wall of the fixing ring in a surrounding manner, the two ends of the sealing ring along the up-down direction are protruded out of the fixing ring, and the sealing ring and the fixing ring are integrally molded through injection molding of an injection molding machine; the method comprises the steps of,

the upper box body is covered on the open end of the lower box body, and clamps the sealing ring and the fixing ring together with the lower box body, and the lower end of the upper box body is opened.

Optionally, the lower box body is provided with a plurality of first extension plates, the first extension plates are spaced along the peripheral side of the lower box body, the end parts of the first extension plates are connected to the edge of the open side of the lower box body, and the upper end face of each first extension plate abuts against the lower end face of the fixing ring;

the upper box body is provided with a plurality of second extending plates, the second extending plates are spaced along the peripheral side of the upper box body, the end parts of the second extending plates are connected to the edge of the opening side of the upper box body, and the lower end face of each second extending plate is abutted to the upper end face of the fixing ring.

Optionally, the upper end surface of each first extension plate is provided with a first sealing groove corresponding to the sealing ring, and the adjacent other first sealing grooves are communicated to form a first sealing ring groove;

the lower end face of each second extension plate is provided with a second sealing groove corresponding to the first sealing groove, and two adjacent second sealing grooves are communicated to form a second sealing ring groove;

the sealing ring protrudes out of the lower end of the fixing ring and stretches into the first sealing ring groove, and protrudes out of the upper end of the fixing ring and stretches into the second sealing ring groove.

Optionally, a plurality of first reinforcing ribs are arranged on the peripheral side surface of the lower box body, and the end parts of the first reinforcing ribs can be connected with the corresponding first extension plates;

the peripheral side face of the upper box body is provided with a plurality of second reinforcing ribs, and the end parts of the second reinforcing ribs can be connected with the corresponding second extension plates.

Optionally, the upper end face of each first extension plate is provided with a plurality of first through holes in a penetrating way;

the upper end surface of the fixed ring is provided with a plurality of second through holes corresponding to the first through holes in a penetrating way;

the upper end surface of each second extension plate is provided with a plurality of third through holes corresponding to the second through holes in a penetrating way;

the high-voltage junction box further comprises a plurality of fasteners, and each fastener sequentially penetrates through the corresponding first through hole, second through hole and third through hole to fixedly connect the lower box body, the fixing ring and the upper box body.

Optionally, a part of a side wall of the lower case is transparent to form a viewing window.

Optionally, the sealing ring comprises TPV sealing soft glue; and/or the number of the groups of groups,

the fixing ring comprises PPT20 hard rubber.

Optionally, the fixing ring includes:

a ring body;

a first plate segment located on an inner sidewall of the ring body; the method comprises the steps of,

the second plate section extends up and down, the lower end of the second plate section is connected with the end part of the first plate section, and the side surface of the second plate section, facing the ring body, is convexly provided with a convex part;

the sealing ring is coated outside the first plate section and the second plate section and is connected with the inner side surface of the ring body.

Optionally, the two opposite side walls of the lower box body are respectively provided with a first via hole and a plurality of second via holes;

the high voltage junction box includes:

the high-voltage input structure is inserted into the first via hole, and two ends of the high-voltage output structure are exposed out of the first via hole; the method comprises the steps of,

the high-voltage output structures are inserted into the corresponding second through holes, two ends of each high-voltage output structure are exposed out of the corresponding second through holes, and the high-voltage output structures are electrically connected with the corresponding high-voltage output structures.

Optionally, the box body is also provided with a mounting hole in a penetrating way;

the high-voltage junction box further comprises a low-voltage control structure, the low-voltage control structure is inserted into the mounting hole, two ends of the low-voltage control structure are exposed out of the mounting hole, and the low-voltage control structure is used for being connected with a controller.

According to the technical scheme provided by the utility model, the sealing structure between the upper box body and the lower box body is formed by integrally forming the sealing ring and the positioning ring, the positioning ring can fix the shape of the sealing ring, so that the sealing ring and the positioning ring can be matched with the opening ends of the upper box body and the lower box body together, the sealing ring and the positioning ring are clamped together by the upper box body and the lower box body, the sealing ring is prevented from deforming when the high-pressure junction box is assembled, the sealing ring cannot be clamped by the upper box body and the lower box body, the sealing effect of the sealing structure is further affected, and meanwhile, as the fixing ring is positioned between the upper box body and the lower box body, namely the fixing ring can be exposed on the side surfaces of the upper box body and the lower box body, an operator can detect whether the sealing device is correctly installed or not in a visual mode after the high-pressure junction box is assembled. The arrangement can greatly shorten the assembly period of the high-voltage junction box, so that the assembly work is simpler, and the production cost is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of an embodiment of a high voltage junction box according to the present utility model;

FIG. 2 is a schematic perspective view of the high voltage junction box of FIG. 1;

FIG. 3 is a schematic cross-sectional view of A-A in FIG. 2;

fig. 4 is a perspective view of the upper case of fig. 1.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	High-voltage junction box	223	Second plate section
1	Lower box body	3	Upper box body
				11	First extension board	31	Second extension board
111	First seal groove	311	Second seal groove
				112	First sealing ring groove	312	Second sealing ring groove
12	First reinforcing rib	32	Second reinforcing rib
				2	Sealing structure	4	Fastening piece
21	Sealing ring	5	High-voltage input structure
				22	Fixing ring	6	High-voltage output structure
221	Ring body	7	Low-voltage control structure
				222	First plate section

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

At present, a high-voltage junction box is commonly used, and the high-voltage junction box is internally provided with various parts, so that the high-voltage junction box needs to have good waterproof performance, for example, CN107807426B discloses an upright cap-buckle type optical cable junction box with an electronic tag, which comprises a cap-buckle type upper cover, a sealing ring, an end cover, a locking mechanism, a fused fiber splitting and splitting component in the box, the electronic tag and a fixing structure; the cap buckle type upper cover comprises a box body, a mounting seat and a mounting opening; the sealing ring is embedded in the periphery of the mounting seat; the end cover is connected with the fiber melting and splitting component in the box to form a plug-in component; the plug-in assembly is inserted into the cap-buckle type upper box body through the opening and enables the end cover to be tightly abutted with the sealing ring, and the locking mechanism enables the end cover to be locked and fixed with the mounting seat; setting the electronic tag on the long edge of the mounting port; the fixing structure is used for fixing the optical cable junction box on an external fixing body.

However, the sealing ring of the existing junction box is usually a rubber sealing ring, the rubber sealing ring is inlaid in the annular groove, however, in order to ensure the sealing effect, the length of the rubber sealing ring is required to be smaller than that of the annular groove, and the sealing ring is required to be stretched when inlaid so as to influence the assembly period of the junction box, so that the assembly work is troublesome, the production cost is high, and the problem is high.

In order to solve the above-mentioned problems, the present utility model provides a high voltage junction box 100, and fig. 1 to 3 are specific embodiments of the high voltage junction box provided by the present utility model.

Referring to fig. 1 to 3, the high-voltage junction box 100 includes a lower box body 1, a sealing structure 2, and an upper box body 3, the upper end of the lower box body 1 is open, the sealing structure 2 includes a sealing ring 21 and a fixing ring 22, the fixing ring 22 is detachably mounted on the open end of the lower box body 1, the sealing ring 21 is annularly disposed on the inner side wall of the fixing ring 22, two ends of the sealing ring 21 along the up-down direction protrude from the fixing ring 22, the sealing ring 21 and the fixing ring 22 are molded into an integral molding by an injection molding machine, the upper box body 3 covers the open end of the lower box body 1 and clamps the sealing ring 21 and the fixing ring 22 together with the lower box body 1, and the lower end of the upper box body 3 is open.

In the technical scheme provided by the utility model, the sealing structure 2 between the upper box body 3 and the lower box body 1 is formed by integrally forming the sealing ring 21 and the positioning ring, the positioning ring can fix the shape of the sealing ring 21 so that the sealing ring 21 and the positioning ring can be corresponding to the open ends of the upper box body 3 and the lower box body 1 together, the sealing ring 21 and the positioning ring are clamped by the upper box body 3 and the lower box body 1 together, the sealing ring 21 is prevented from deforming when the high-pressure junction box 100 is assembled, so that the upper box body 3 and the lower box body 1 cannot be clamped to the sealing ring 21, the installation rate and the sealing effect of the sealing structure 2 are further affected, and meanwhile, as the fixing ring 22 is positioned between the upper box body 3 and the lower box body 1, namely, the fixing ring 22 can be exposed on the side surfaces of the upper box body 3 and the lower box body 1, operators can detect whether the junction box 100 is assembled in a visual manner or not by the accurate visual inspection mode. Such an arrangement can greatly shorten the assembly cycle of the high voltage junction box 100, making the assembly work simpler, and thus reducing the production cost.

Further, the lower case 1 has a plurality of first extension plates 11, the plurality of first extension plates 11 are spaced along the peripheral side of the lower case 1, the end portions of the first extension plates 11 are connected to the edge of the open side of the lower case 1, the upper end face of each first extension plate 11 abuts against the lower end face of the fixing ring 22, the upper case 3 has a plurality of second extension plates 31, the plurality of second extension plates 31 are spaced along the peripheral side of the upper case 3, the end portions of the second extension plates 31 are connected to the edge of the open side of the upper case 3, and the lower end face of each second extension plate 31 abuts against the upper end face of the fixing ring 22. Each first extension plate 11 and the corresponding second extension plate 31 are used for clamping the sealing ring 21 and the fixing ring 22 together in the up-down direction, and the arrangement of the first extension plates 11 and the second extension plates 31 can increase the contact area between the sealing ring 21 and the positioning ring and the lower case 1 and the upper case 3, so as to increase the stability of clamping the sealing ring 21 and the positioning ring between the lower case 1 and the upper case 3.

Referring to fig. 2 and 4, further, a first sealing groove 111 is provided on the upper end surface of each first extension plate 11 corresponding to the sealing ring 21, the adjacent other first sealing grooves 111 are disposed in a communicating manner to form a first sealing ring groove 112, a second sealing groove 311 is provided on the lower end surface of each second extension plate 31 corresponding to the first sealing groove 111, the adjacent two second sealing grooves 311 are disposed in a communicating manner to form a second sealing ring groove 312, the lower end of the sealing ring 21 protrudes from the fixing ring 22 to extend into the first sealing ring groove 112, and the upper end of the sealing ring 21 protrudes from the fixing ring 22 to extend into the second sealing ring groove 312. The sealing ring 21 protrudes from the lower end of the fixing ring 22 to extend into the first sealing ring groove 112, the sealing ring 21 protrudes from the upper end of the fixing ring 22 to extend into the second sealing ring groove 312, and the arrangement can ensure that the sealing ring 21 can receive better pressure and deform so as to completely attach to the first sealing ring groove 112 and the second sealing ring groove 312, so that better sealing effect is achieved.

In order to ensure the structural strength of each first extension plate 11 and each second extension plate 31, a plurality of first reinforcing ribs 12 are disposed on the peripheral side surface of the lower case 1, and the end portions of each first reinforcing rib 12 can be connected to the corresponding first extension plate 11, a plurality of second reinforcing ribs 32 are disposed on the peripheral side surface of the upper case 3, and the end portions of each second reinforcing rib 32 can be connected to the corresponding second extension plate 31. The arrangement of the first reinforcing ribs 12 and the second reinforcing ribs 32 can strengthen the structural strength of the first extending plate 11 and the second extending plate 31, increase the stability of the first extending plate 11 and the second extending plate 31, and further enable the clamping of the first extending plate 11 and the second extending plate 31 to the sealing ring 21 and the positioning ring to be more stable.

Specifically, the upper end surface of each first extension plate 11 is perforated with a plurality of first through holes, the upper end surface of the fixing ring 22 is perforated with a plurality of second through holes corresponding to the first through holes, the upper end surface of each second extension plate 31 is perforated with a plurality of third through holes corresponding to the second through holes, the high-voltage junction box 100 further includes a plurality of fasteners 4, and each fastener 4 sequentially passes through the corresponding first through hole, second through hole and third through hole to fixedly connect the lower box 1, the fixing ring 22 and the upper box 3. In the embodiment of the present utility model, the fastening member 4 is configured as a fixing bolt, each fixing bolt sequentially passes through the corresponding first through hole, the second through hole and the third through hole along the up-down direction, and the end portion of the fixing bolt extending out of the corresponding third through hole is fixed by a locking nut, so as to fixedly connect the lower case 1, the fixing ring 22 and the upper case 3.

In other embodiments of the present utility model, the fastener 4 may be configured as a rivet or the like, which sequentially passes through the corresponding first through hole, the second through hole, and the third through hole in an up-down direction, so as to fixedly connect the lower case 1, the fixing ring 22, and the upper case 3, which is not limited in this aspect of the present utility model.

In order to enable an operator to check whether the high-voltage junction box 100 has the phenomenon of water leakage, water leakage and water accumulation at any time, a part of one side wall of the lower box body 1 is arranged in a transparent manner so as to form an observation window. An operator can observe whether the high-voltage junction box 100 has a water leakage phenomenon through the observation window at any time, so as to determine whether the high-voltage junction box 100 needs to be repaired or replaced.

Specifically, the sealing ring 21 comprises TPV sealing soft rubber, and the fixing ring 22 comprises PPT20 hard rubber. In the embodiment of the present utility model, the sealing ring 21 and the fixing ring 22 are injection molded by a dual-color injection molding machine at a time, the material of the fixing ring 22 is PPT20 hard rubber, and by such arrangement, the shape of the fixing ring 22 is not easy to change, so as to fix the shape of the sealing ring 21, prevent the shape change of the sealing ring 21 during installation from influencing the assembly rate of the high-voltage junction box 100, and the material of the sealing ring 21 is TPV soft sealing rubber, so that the sealing ring 21 has good sealing performance, and the sealing capability of the high-voltage junction box 100 is ensured.

Referring to fig. 3, in order to further enhance the connection strength between the sealing ring 21 and the fixing ring 22, the fixing ring 22 includes a ring body 221, a first plate segment 222 and a second plate segment 223, the first plate segment 222 is located on the inner side wall of the ring body 221, the second plate segment 223 extends vertically, the lower end of the second plate segment 223 is connected with the end of the first plate segment 222, the side surface of the second plate segment 223 facing the ring body 221 is convexly provided with a protrusion, and the sealing ring 21 is wrapped on the outer sides of the first plate segment 222 and the second plate segment 223 and is connected with the inner side surface of the ring body 221. The sealing ring 21 is wrapped outside the first plate section 222 and the second plate section 223, so that the connection strength between the sealing ring and the fixing ring 22 is further enhanced, and the phenomenon that the sealing ring 21 and the fixing ring 22 fall off is prevented, so that the assembly rate of the high-voltage junction box 100 is affected.

Further, the two opposite side walls of the lower case 1 are respectively provided with a first via hole and a plurality of second via holes, the high-voltage junction box 100 includes a high-voltage input structure 5 and a plurality of high-voltage output structures 6, the high-voltage input structure 5 is inserted into the first via holes, two ends of the high-voltage output structure 6 are exposed to the first via holes, each high-voltage output structure 6 is inserted into a corresponding second via hole, two ends of each high-voltage output structure 6 are exposed to a corresponding second via hole, and a plurality of high-voltage output structures 6 are electrically connected with the corresponding high-voltage output structures 6. One high-voltage input structure 5 is electrically connected with a plurality of high-voltage output structures 6 to realize the branching function of the high-voltage branching box 100, so that one high-voltage interface can supply power to a plurality of parts at the same time.

Furthermore, the box body is also provided with a mounting hole in a penetrating way; the high-voltage junction box 100 further comprises a low-voltage control structure 7, the low-voltage control structure 7 is inserted into the mounting hole, two ends of the low-voltage control structure 7 are exposed out of the mounting hole, and the low-voltage control structure is used for connecting a controller. The low-voltage control structure 7 is used for controlling the working state of each part in the high-voltage junction box 100.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the specification and drawings of the present utility model or direct/indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A high voltage junction box, comprising:

the upper end of the lower box body is opened;

the sealing structure comprises a sealing ring and a fixing ring, the fixing ring is detachably arranged at the open end of the lower box body, the sealing ring is arranged on the inner side wall of the fixing ring in a surrounding manner, the two ends of the sealing ring along the up-down direction are protruded out of the fixing ring, and the sealing ring and the fixing ring are integrally molded through injection molding of an injection molding machine; the method comprises the steps of,

the upper box body is covered on the open end of the lower box body, and clamps the sealing ring and the fixing ring together with the lower box body, and the lower end of the upper box body is opened.

2. The high voltage distribution box of claim 1, wherein the lower box body has a plurality of first extension plates spaced along a peripheral side of the lower box body, an end of each first extension plate being connected to an edge of an open side of the lower box body, an upper end face of each first extension plate abutting against a lower end face of the fixing ring;

the upper box body is provided with a plurality of second extending plates, the second extending plates are spaced along the peripheral side of the upper box body, the end parts of the second extending plates are connected to the edge of the opening side of the upper box body, and the lower end face of each second extending plate is abutted to the upper end face of the fixing ring.

3. The high-pressure junction box according to claim 2, wherein the upper end face of each first extension plate is provided with a first sealing groove corresponding to the sealing ring, and the adjacent other first sealing grooves are communicated to form a first sealing ring groove;

the lower end face of each second extension plate is provided with a second sealing groove corresponding to the first sealing groove, and two adjacent second sealing grooves are communicated to form a second sealing ring groove;

the sealing ring protrudes out of the lower end of the fixing ring and stretches into the first sealing ring groove, and protrudes out of the upper end of the fixing ring and stretches into the second sealing ring groove.

4. The high-voltage junction box according to claim 2, wherein a plurality of first reinforcing ribs are arranged on the peripheral side surface of the lower box body, and the end parts of the first reinforcing ribs can be connected with the corresponding first extension plates;

the peripheral side face of the upper box body is provided with a plurality of second reinforcing ribs, and the end parts of the second reinforcing ribs can be connected with the corresponding second extension plates.

5. The high voltage distribution box according to claim 2, wherein the upper end surface of each of the first extension plates is provided with a plurality of first through holes therethrough;

the upper end surface of the fixed ring is provided with a plurality of second through holes corresponding to the first through holes in a penetrating way;

the upper end surface of each second extension plate is provided with a plurality of third through holes corresponding to the second through holes in a penetrating way;

the high-voltage junction box further comprises a plurality of fasteners, and each fastener sequentially penetrates through the corresponding first through hole, second through hole and third through hole to fixedly connect the lower box body, the fixing ring and the upper box body.

6. The high voltage distribution box of claim 1, wherein a portion of a side wall of the lower box body is transparent to form the viewing window.

7. The high pressure junction box of claim 1, wherein said seal ring comprises a TPV seal soft gel; and/or the number of the groups of groups,

the fixing ring comprises PPT20 hard rubber.

8. The high voltage junction box of claim 1, wherein said retaining ring comprises:

a ring body;

a first plate segment located on an inner sidewall of the ring body; the method comprises the steps of,

the second plate section extends up and down, the lower end of the second plate section is connected with the end part of the first plate section, and the side surface of the second plate section, facing the ring body, is convexly provided with a convex part;

the sealing ring is coated outside the first plate section and the second plate section and is connected with the inner side surface of the ring body.

9. The high voltage junction box of claim 1, wherein the opposite side walls of the lower box are provided with a first via and a plurality of second vias, respectively;

the high voltage junction box includes:

the high-voltage input structure is inserted into the first via hole, and two ends of the high-voltage output structure are exposed out of the first via hole; the method comprises the steps of,

the high-voltage output structures are inserted into the corresponding second through holes, two ends of each high-voltage output structure are exposed out of the corresponding second through holes, and the high-voltage output structures are electrically connected with the corresponding high-voltage output structures.

10. The high voltage distribution box of claim 1, wherein the box body is further provided with a mounting hole therethrough;

the high-voltage junction box further comprises a low-voltage control structure, the low-voltage control structure is inserted into the mounting hole, two ends of the low-voltage control structure are exposed out of the mounting hole, and the low-voltage control structure is used for being connected with a controller.