Wiring structure, inverter with wiring structure and power supply system

Abstract

The invention discloses a wiring structure, an inverter with the wiring structure and a power supply system, and relates to the technical field of inverters, and the wiring structure comprises a wiring shell and a pressing cover located on the wiring shell. The sliding pin and the wiring arm are driven to move downwards by pressing the cover, so that the wire pressing groove of the wiring arm accommodates the total cable. Afterwards, along with the downward wiring arm, the wire pressing groove drives the total cable to move downwards, so that the tip of the metal wiring board penetrates into the total cable, the tip is in contact with a metal core in the total cable, and the tip is electrically connected with the total cable. Compared with the prior art, the wiring arm of the fork-shaped structure in the wiring shell is matched with the pointed end to form puncture joint of the general cable, so that the pointed end is contacted with the metal core of the general cable after puncturing the insulating skin of the general cable to form electric connection, peeling is not needed, wiring is simpler, and the wiring efficiency can be greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of inverters, and in particular to a wiring structure. Background Art

[0002] With the rapid development of power supply, the number of substations in power supply departments has increased dramatically. Substations are widely distributed, far away, and mostly used in the field. Inverters are the heart of electricity and power supply and the foundation of power grid operation.

[0003] The inverter consists of an inverter bridge, control logic and filter circuit, and is used to convert direct current (DC) into alternating current (AC) and feed it to the power grid. During this process, the current in each branch cable needs to be converged to the main cable. Each branch cable is connected to each circuit in the inverter, and the main cable is connected to the power grid.

[0004] Referring to an inverter device for a solar module disclosed in Chinese patent CN113949290B, the wiring principle is generally to lead the wire out of the cable and strip it to expose the core wire in the cable, and then pull the top block in the terminal board, and the exposed core wire is inserted between the top block and the deformation plate. The top block is reset with the help of the force of the second spring, and the core wire is clamped in the terminal board.

[0005] The above-mentioned existing patented technology requires a stripping process every time a cable is connected, which greatly affects the wiring efficiency. Summary of the invention

[0006] One of the purposes of the present invention is to solve the problem in the prior art that each time an inverter is connected to a cable, a stripping process must be performed, which greatly affects the wiring efficiency.

[0007] A second object of the present invention is to provide an inverter.

[0008] A third object of the present invention is to provide a power supply system.

[0009] To achieve one of the above purposes, the present invention adopts the following technical solution: a wiring structure, including a wiring shell and a pressing cover located on the wiring shell, the back of the wiring shell is provided with a connecting terminal, and the connecting terminal is used to connect a branch cable.

[0010] The wiring shell is provided with an installation channel on the front side, which extends to the position of the connecting terminal. An insulating sheath is installed in the installation channel. The insulating sheath is provided with a wire entry cavity which passes through from front to back. The diameter of the wire entry cavity is not less than the diameter of the total cable. A concave deformation opening is provided at the bottom of the wire entry cavity.

[0011] The insulating sheath is provided with a metal wiring board, the metal wiring board is adapted to be connected with the deformation opening, and the tail of the metal wiring board is connected with the connection terminal.

[0012] The metal wiring board is provided with a protruding tip, and the height of the tip is not higher than the bottom wall of the inlet cavity.

[0013] The wiring shell and the insulating sheath are both provided with a coaxial upper through hole, the upper through hole is located directly above the pointed head, the pressing cover has a sliding pin slidably connected to the upper through hole, a wiring arm is provided under the sliding pin, an insulating layer is provided between the sliding pin and the wiring arm, and the bottom height of the wiring arm is not lower than the top wall of the incoming line cavity.

[0014] The wiring arm is provided with a wire pressing groove, the bottom of the wire pressing groove is an open structure, and the width of the wire pressing groove is not less than the diameter of the total cable.

[0015] In the above technical solution, when the embodiment of the present invention is used, the main cable is inserted into the inlet cavity of the insulating sheath, and when the head of the main cable contacts the bottom of the inlet cavity, that is, contacts the tail of the metal terminal block, the pressing cover above the terminal shell is pushed downward, driving the sliding pin and the terminal arm downward, and the terminal arm extends into the inlet cavity, and the main cable is accommodated through the wire pressing groove of the terminal arm. Then, as the terminal arm moves downward, the wire pressing groove drives the main cable downward into the deformation mouth, so that the pointed tip of the metal terminal block penetrates into the main cable, and then the pointed tip contacts the metal core in the main cable, and the pointed tip forms an electrical connection with the main cable, and then the connecting terminal forms an electrical connection with the main cable through the metal terminal block and the pointed tip.

[0016] The branch cables are connected to the control circuit in the inverter (and then the branch cables are electrically connected to the connection terminals), while the main cable is connected to the equipment in the power system (grid). The main cable often needs to be plugged in and out, so the wiring between the inverter and the main cable needs to be more convenient.

[0017] The beneficial effect of the present invention is that the present invention forms a piercing connection with the main cable by cooperating with the fork-shaped wiring arm in the wiring shell and the pointed head, so that the pointed head pierces the insulation skin of the main cable and contacts the metal core of the main cable to form an electrical connection. Compared with the prior art, there is no need to strip the insulation skin, the wiring is simpler, and the wiring efficiency can be greatly improved.

[0018] Furthermore, in an embodiment of the present invention, the pointed end is integrally connected to the metal wiring board, and both the pointed end and the metal wiring board are made of copper material.

[0019] Furthermore, in an embodiment of the present invention, the pressing cover has a threaded through hole, a threaded column is fixed on the wiring shell, the threaded column is threadedly connected to the threaded through hole, the threaded column protrudes from the upper surface of the pressing cover and is threadedly connected to a nut, and a reset spring is provided between the pressing cover and the wiring shell.

[0020] The specific process of pushing the push cover downward is to turn the nut clockwise, and the nut cooperates with the threaded column so that the nut pushes the push cover downward. The specific process of pushing the push cover upward is to turn the nut counterclockwise, and the nut cooperates with the threaded column, the nut is upward, and the push cover is reset upward under the action of the reset spring. By driving the push cover upward or downward through the above structure, vibration can be avoided when the main cable is connected. The vibration is caused by the reset spring quickly driving the push cover upward or downward, which produces strong vibration on the wiring shell, which is not conducive to the connection between the branch cable and the connection terminal, and is more likely to cause connection failure.

[0021] Furthermore, in an embodiment of the present invention, the middle of the pointed tip is a hollow structure, and the side walls of the hollow structure are thin walls protruding outward.

[0022] When the pointed tip contacts the top wall of the wire crimping groove of the wiring arm and the wiring arm applies downward pressure on the pointed tip, the pointed tip transmits the force to the thin wall of the hollow structure, causing the thin wall to bulge outward and deform, thereby stretching the main cable. At this time, the main cable is restricted by the side walls of the wire crimping groove, making the pointed tip contact more closely with the metal core of the main cable, thereby forming a better electrical connection.

[0023] Moreover, in this way, the pulling resistance of the main cable can be enhanced, making it difficult for the main cable to be pulled out.

[0024] Furthermore, in an embodiment of the present invention, both sides of the wire crimping groove have accommodating openings, and when the upper end of the pointed head is subjected to force to cause the thin wall of the hollow structure to deform, the thin wall is engaged through the accommodating openings.

[0025] Furthermore, in an embodiment of the present invention, a distance sensor is provided in the insulating sheath, an electrical connection end of the distance sensor is connected to the metal wiring board or the connection terminal, and a detection end of the distance sensor faces the line inlet cavity.

[0026] The distance sensor pre-sets the distance detection threshold. When the main cable is pulled and moved, when the distance the main cable is pulled and moved is greater than the preset threshold between the distance sensor and the main cable, the distance sensor sends a main cable separation signal. In this way, it is possible to avoid the metal core of the main cable from being separated from the tip and causing leakage.

[0027] Furthermore, in an embodiment of the present invention, the front end opening of the line inlet cavity is provided with an expansion opening, the sealing sleeve is slidably arranged in the expansion opening, the sealing sleeve is provided with a line passing cavity passing through front and back, and the diameter of the line passing cavity is not smaller than the total cable.

[0028] The elastic plates arranged at intervals at the front end of the sealing sleeve are exposed outside the wiring shell, and multiple elastic plates are surrounded to form a ring-shaped opening structure. A sealing ring is provided in the ring-shaped opening structure, and the sealing ring is connected to the inner wall of the elastic plate. The sealing ring is in a state of being pulled by the elastic plate.

[0029] In order to prevent water and dust, a sealing sleeve needs to be set between the main cable and the insulating sheath for sealing. However, after the main cable is installed, it is not easy to seal through the sealing sleeve. For this reason, the sealing ring is first pulled open through the elastic plate exposed outside the wiring shell, so that the main cable can easily pass through the ring opening of the sealing ring. When the main cable passes through the ring opening of the sealing ring, it pushes the sealing sleeve, and the elastic plate is squeezed by the expansion opening, causing the elastic plate to deform inward, prompting the sealing ring to make sealing contact with the main cable.

[0030] In order to achieve the second of the above-mentioned objectives, the present invention adopts the following technical solution: an inverter having the wiring structure described in one of the above-mentioned objectives.

[0031] Furthermore, in an embodiment of the present invention, the inverter includes an inverter box, and the inverter box is divided into a control chamber and a heat dissipation chamber by front and rear plates and left and right plates. The control chamber accommodates a control circuit, and the heat dissipation chamber accommodates a heat dissipation device. The control chamber and the heat dissipation chamber are separated by a partition, and the wiring structure is installed between the control chamber and the heat dissipation chamber, and the wiring structure and the control circuit are connected through branch cables.

[0032] In order to achieve the third objective above, the present invention adopts the following technical solution: a power supply system, which has the inverter described in the second objective of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the inverter according to an embodiment of the present invention.

[0034] Figure 2 Schematic diagram of the wiring structure of an embodiment of the present invention.

[0035] Figure 3 It is a schematic diagram of the side structure of the wiring arm and the plug pin according to an embodiment of the present invention.

[0036] Figure 4 It is a schematic diagram of the effect after wiring the wiring structure of an embodiment of the present invention.

[0037] Figure 5 It is a schematic diagram of the coordination effect of the wiring arm and the plug pin during wiring according to an embodiment of the present invention.

[0038] Figure 6 Schematic diagram of the deformation effect of the plug pin according to the embodiment of the present invention.

[0039] Figure 7 It is a schematic diagram of the three-dimensional structure of the sealing sleeve according to an embodiment of the present invention.

[0040] 10. Wiring shell, 11. Upper perforation, 12. Connection terminal; 20. Insulating sheath, 21. Wire inlet cavity, 22. Deformation opening, 23. Expansion opening; 30. Metal terminal block, 31. Pointed tip, 32. Hollow structure, 33. Thin wall; 40. Pressing cover, 41. Sliding pin, 42. Wiring arm, 43. Insulating layer, 44. Wire pressing groove, 45. Accommodating opening, 46. Nut, 47. Reset spring, 48. Threaded column; 50. Distance sensor; 60. sealing sleeve, 61. wire passing cavity, 62. elastic plate, 63. sealing ring; 100. Inverter box, 101. Control chamber, 102. Heat dissipation chamber. DETAILED DESCRIPTION

[0041] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] For the purpose of simplicity and illustration, the principles of the embodiments are described mainly by reference to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known inverters and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments may be used in combination with each other.

[0045] Example 1

[0046] It should be noted that the drawings in the specification are the contents of the specification. The structural shapes, connection relationships, matching relationships, and positional relationships that can be obtained without any doubt in the drawings in the specification should be understood as the contents of the specification.

[0047] A wiring structure such as Figure 1 , Figure 2 As shown, it includes a wiring shell 10 and a pressing cover 40 located on the wiring shell 10. The back of the wiring shell 10 is provided with a connecting terminal 12, and the connecting terminal 12 is used to connect the branch cable.

[0048] like Figure 2 As shown, the wiring shell 10 is provided with an installation channel on the front side, which extends to the position of the connecting terminal 12. An insulating sheath 20 is installed in the installation channel. The insulating sheath 20 is provided with a wire entry cavity 21 that passes through from front to back. The diameter of the wire entry cavity 21 is not less than the diameter of the total cable, and a concave deformation opening 22 is provided at the bottom of the wire entry cavity 21.

[0049] The insulating sheath 20 has a metal wiring plate 30 therein. The metal wiring plate 30 is adapted to be connected with the deformation opening 22 , and the tail of the metal wiring plate 30 is connected to the connection terminal 12 .

[0050] The metal wiring board 30 is provided with a protruding tip 31 , and the height of the tip 31 is not higher than the bottom wall of the inlet cavity 21 .

[0051] like Figure 2 , Figure 3 As shown, the wiring shell 10 and the insulating sheath 20 are both provided with a coaxial upper through hole 11, and the upper through hole 11 is located directly above the pointed head 31. The pressing cover 40 has a sliding pin 41 slidably connected to the upper through hole 11, and a wiring arm 42 is provided under the sliding pin 41. An insulating layer 43 is provided between the sliding pin 41 and the wiring arm 42, and the bottom height of the wiring arm 42 is not lower than the top wall of the incoming line cavity 21.

[0052] The wiring arm 42 is provided with a wire pressing groove 44 , the bottom of the wire pressing groove 44 is an open structure, and the width of the wire pressing groove 44 is not less than the diameter of the total cable.

[0053] Implementation principle: Figure 4 , Figure 5 As shown, the main cable is inserted into the inlet cavity 21 of the insulating sheath 20. When the head of the main cable contacts the bottom of the inlet cavity 21, that is, contacts the tail of the metal wiring board 30, the pressing cover 40 above the wiring shell 10 is pushed downward, driving the sliding pin 41 and the wiring arm 42 downward, and the wiring arm 42 extends into the inlet cavity 21, and the main cable is accommodated through the wire pressing groove 44 of the wiring arm 42. Then, as the wiring arm 42 moves downward, the wire pressing groove 44 drives the main cable downward into the deformation opening 22, so that the pointed head 31 of the metal wiring board 30 penetrates into the main cable, and then the pointed head 31 contacts the metal core in the main cable, and the pointed head 31 forms an electrical connection with the main cable, and then the connecting terminal 12 forms an electrical connection with the main cable through the metal wiring board 30 and the pointed head 31.

[0054] The branch cable is connected to the control circuit in the inverter (and then the branch cable is electrically connected to the connection terminal 12), and the main cable is connected to the equipment of the power system (grid). The main cable often needs to be plugged in and out, so the wiring between the inverter and the main cable needs to be more convenient.

[0055] The present invention cooperates with the fork-shaped wiring arm 42 in the wiring housing 10 and the prong 31 to form a piercing connection with the main cable, so that the prong 31 pierces the insulation of the main cable and contacts the metal core of the main cable to form an electrical connection. Compared with the prior art, there is no need to strip the insulation, the wiring is simpler, and the wiring efficiency can be greatly improved.

[0056] Furthermore, the present invention pushes the main cable downward into the deformation opening 22 through the fork-shaped wiring arm 42 in the wiring shell 10, so as to deform the main cable and make it difficult to be pulled out, thereby ensuring the quality of wiring.

[0057] Specifically, the pointed tip 31 is connected to the metal wiring board 30 as a whole, and both the pointed tip 31 and the metal wiring board 30 are made of copper material.

[0058] Specifically, Figure 2 , Figure 4 As shown, the pressing cover 40 has a threaded through hole, a threaded column 48 is fixed on the wiring shell 10, the threaded column 48 is threadedly connected to the threaded through hole, the threaded column 48 protrudes from the upper surface of the pressing cover 40 and is threadedly connected to a nut 46, and a reset spring 47 is provided between the pressing cover 40 and the wiring shell 10.

[0059] The specific process of pushing the pressing cover 40 downward is to turn the nut 46 clockwise, and the nut 46 cooperates with the threaded column 48, so that the nut 46 pushes the pressing cover 40 downward. The specific process of pushing the pressing cover 40 upward is to turn the nut 46 counterclockwise, and the nut 46 cooperates with the threaded column 48, and the nut 46 is upward, and the pressing cover 40 is reset upward under the action of the reset spring 47. The above structure drives the pressing cover 40 to move upward or downward, which can avoid vibration when the main cable is connected. The vibration is caused by the reset spring 47 quickly driving the pressing cover 40 to move upward or downward, which generates strong vibration on the wiring shell 10, which is not conducive to the connection between the branch cable and the connection terminal 12, and is more likely to cause connection failure.

[0060] Specifically, Figure 3 , Figure 6 As shown, the middle of the pointed tip 31 is a hollow structure 32 , and the side wall of the hollow structure 32 is a thin wall 33 protruding outward.

[0061] When the pointed tip 31 contacts the top wall of the wire crimping groove 44 of the wiring arm 42 and the wiring arm 42 applies downward pressure to the pointed tip 31, the pointed tip 31 transmits the force to the thin wall 33 of the hollow structure 32, causing the thin wall 33 to bulge outward and deform, thereby stretching the main cable. At this time, the main cable is restricted by the side wall of the wire crimping groove 44, so that the pointed tip 31 is in closer contact with the metal core of the main cable, forming a better electrical connection.

[0062] Moreover, in this way, the pulling resistance of the main cable can be enhanced, making it difficult for the main cable to be pulled out.

[0063] More specifically, the two sides of the wire pressing groove 44 have receiving openings 45 , and when the upper end of the pointed head 31 is subjected to force to cause the thin wall 33 of the hollow structure 32 to deform, the thin wall 33 is engaged through the receiving openings 45 .

[0064] Specifically, Figure 2 As shown, a distance sensor 50 is disposed in the insulating sheath 20 , an electrical connection end of the distance sensor 50 is connected to the metal wiring board 30 or the connection terminal 12 , and a detection end of the distance sensor 50 faces the line inlet cavity 21 .

[0065] The distance sensor 50 is preset with a distance detection threshold. When the main cable is pulled and moved, when the distance of the main cable being pulled and moved is greater than the predetermined threshold between the distance sensor 50 and the main cable, the distance sensor 50 sends a main cable separation signal. In this way, it is possible to prevent the metal core of the main cable from being separated from the tip 31 and causing leakage.

[0066] Specifically, Figure 2 , Figure 7As shown, the front end opening of the inlet cavity 21 is provided with an expansion opening 23, and the sealing sleeve 60 is slidably arranged in the expansion opening 23. The sealing sleeve 60 is provided with a wire passing cavity 61 that passes through front and back, and the diameter of the wire passing cavity 61 is not smaller than the total cable.

[0067] The elastic plates 62 arranged at intervals at the front end of the sealing sleeve 60 are exposed outside the wiring shell 10, and multiple elastic plates 62 are surrounded to form a ring-shaped opening structure. A sealing ring 63 is provided in the ring-shaped opening structure. The sealing ring 63 is connected to the inner wall of the elastic plate 62, and the sealing ring 63 is in a state of being pulled by the elastic plate 62.

[0068] In order to prevent water and dust, it is necessary to set a sealing sleeve 60 between the main cable and the insulating sheath 20 for sealing. However, after the main cable is installed, it is not easy to seal through the sealing sleeve 60. For this reason, the sealing ring 63 is first pulled open by the elastic plate 62 exposed outside the wiring shell 10, so that the main cable can easily pass through the ring opening of the sealing ring 63. After the main cable passes through the ring opening of the sealing ring 63, the sealing sleeve 60 is pushed, and the elastic plate 62 is squeezed by the expansion opening 23, so that the elastic plate 62 is deformed inward, prompting the sealing ring 63 to make a sealing contact with the main cable.

[0069] Example 2

[0070] An inverter such as Figure 1 As shown, the inverter has the wiring structure described in the above-mentioned embodiment 1.

[0071] Specifically, the inverter includes an inverter box 100, and the inverter box 100 is divided into a control chamber 101 and a heat dissipation chamber 102 by front and rear plates and left and right plates. The control chamber 101 accommodates a control circuit, and the heat dissipation chamber 102 accommodates a heat dissipation device. The control chamber 101 and the heat dissipation chamber 102 are separated by a partition. The wiring structure is installed between the control chamber 101 and the heat dissipation chamber 102, and the wiring structure is connected to the control circuit through various branch cables.

[0072] Example 3

[0073] A power supply system comprises the inverter described in the second embodiment above.

[0074] Although the above describes the illustrative specific embodiments of the present invention so that those skilled in the art can understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, all inventions and creations using the concepts of the present invention are protected.

Claims

1. A wiring structure, characterized in that: It comprises a wiring shell and a pressing cover located on the wiring shell, wherein a connecting terminal is provided at the back of the wiring shell, and the connecting terminal is used to connect a branch cable; The wiring shell is provided with an installation channel on the front side, the installation channel extends to the position of the connection terminal, an insulating sheath is installed in the installation channel, the insulating sheath is provided with a front-to-back through-line cavity, the diameter of the inlet cavity is not less than the diameter of the total cable, and a concave deformation opening is provided at the bottom of the inlet cavity; The insulating sheath has a metal wiring board, the metal wiring board is adapted to be connected with the deformation opening, and the tail of the metal wiring board is connected with the connection terminal; The metal wiring board is provided with a protruding tip, the height of which is not higher than the bottom wall of the inlet cavity; The wiring shell and the insulating sheath are both provided with a coaxial upper through hole, the upper through hole is located directly above the pointed head, the pressing cover has a sliding pin slidably connected to the upper through hole, a wiring arm is provided under the sliding pin, an insulating layer is provided between the sliding pin and the wiring arm, and the bottom height of the wiring arm is not lower than the top wall of the incoming line cavity; The wiring arm is provided with a wire pressing groove, the bottom of the wire pressing groove is an open structure, and the width of the wire pressing groove is not less than the diameter of the total cable.

2. The wiring structure according to claim 1, characterized in that: The pointed end is connected to the metal wiring board as a whole, and both the pointed end and the metal wiring board are made of copper material.

3. The wiring structure according to claim 1, characterized in that: The pressing cover has a threaded through hole, a threaded column is fixed on the wiring shell, the threaded column is threadedly connected to the threaded through hole, the threaded column protrudes from the upper surface of the pressing cover and is threadedly connected to a nut, and a reset spring is provided between the pressing cover and the wiring shell.

4. The wiring structure according to claim 1, characterized in that: The middle of the pointed tip is a hollow structure, and the side walls of the hollow structure are thin walls protruding outwards.

5. The wiring structure according to claim 4, characterized in that: The two sides of the wire pressing groove are provided with accommodating openings, and when the upper end of the pointed head is subjected to force to cause the thin wall of the hollow structure to deform, the thin wall is matched through the accommodating openings.

6. The wiring structure according to claim 1, characterized in that: A distance sensor is arranged in the insulating sheath, the power connection end of the distance sensor is connected to the metal wiring board or the connection terminal, and the detection end of the distance sensor faces the line inlet cavity.

7. The wiring structure according to claim 1, characterized in that: The front end opening of the inlet cavity is provided with an expansion opening, the sealing sleeve is slidably arranged in the expansion opening, the sealing sleeve is provided with a wire passing cavity which passes through front and back, and the diameter of the wire passing cavity is not less than the total cable; The elastic plates arranged at intervals at the front end of the sealing sleeve are exposed outside the wiring shell, and multiple elastic plates are surrounded to form a ring-shaped opening structure. A sealing ring is provided in the ring-shaped opening structure, and the sealing ring is connected to the inner wall of the elastic plate. The sealing ring is in a state of being pulled by the elastic plate.

8. An inverter, characterized in that: The inverter has the wiring structure described in any one of claims 1 to 7.

9. The inverter according to claim 8, characterized in that: The inverter includes an inverter box, and the inverter box is divided into a control chamber and a heat dissipation chamber by front and rear plates and left and right plates. The control chamber accommodates a control circuit, and the heat dissipation chamber accommodates a heat dissipation device. The control chamber and the heat dissipation chamber are separated by a partition. The wiring structure is installed between the control chamber and the heat dissipation chamber, and the wiring structure is connected to the control circuit through various branch cables.

10. A power supply system, characterized in that: The power supply system comprises the inverter as claimed in claim 8 or 9.

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