Inverter plug and electrical system

Abstract

The invention discloses an inverter plug and an electrical system, and belongs to the field of electrical technology, the inverter plug comprises a first shell, a first sealing block, a first sealing cover and a first wire harness, the first shell is suitable for being fixed on an inverter, two ends of the first shell are a first plugging end and a first threading end respectively, the first plugging end is located outside the inverter, and the first threading end is located outside the first sealing block. The first threading end is located in the inverter, the first threading end is provided with a first containing groove, the first sealing block is arranged in the first containing groove, the first sealing block is in sealing fit with the inner wall of the first containing groove, the first sealing cover is detachably connected with the first threading end, and the first sealing cover blocks a groove opening of the first containing groove; the first wire harness penetrates through the first sealing cover, the first sealing block and the first shell, and the first sealing cover and the first sealing block can prevent water vapor in the inverter from entering the first plugging end along the first wire harness, so that a waterproof function is realized, and a plug fault of the inverter is avoided.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and more specifically, to an inverter plug and an electrical system. Background Technology

[0002] In related technologies, low-voltage connectors are key components in vehicle low-voltage electrical systems. Currently, common low-voltage connectors on the market are usually divided into male and female ends. The male end is fixed on the inverter housing, and the female end is installed on the vehicle wiring harness and plugged into the male end. However, the inverter experiences large temperature variations during operation, and condensation is easily generated inside the inverter. This condensation can easily flow into the male end of the low-voltage connector, leading to low-voltage connector failure. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, the present invention proposes an inverter plug that is waterproof, thereby preventing inverter plug malfunctions.

[0004] The present invention also proposes an inverter plug and electrical system as described above.

[0005] An inverter plug according to an embodiment of the present invention includes: a first housing adapted to be fixed on an inverter, the two ends of the first housing being a first plug-in end and a first wire-through end, the first plug-in end being located outside the inverter and the first wire-through end being located inside the inverter, the first wire-through end having a first receiving groove; a first sealing block disposed in the first receiving groove, the first sealing block sealingly engaging with the inner wall of the first receiving groove; a first cover detachably connected to the first wire-through end, and the first cover blocking the opening of the first receiving groove; and a first wire harness passing through the first cover, the first sealing block, and the first housing.

[0006] According to an embodiment of the present invention, the first wire-through end of the first housing has a first receiving groove, a first sealing block is disposed in the first receiving groove, a first cover blocks the opening of the first receiving groove, and a first wire harness passes through the first cover, the first sealing block and the first housing. The first cover and the first sealing block can prevent moisture in the inverter from entering the first plug end along the first wire harness, thereby achieving a waterproof function and avoiding inverter plug failure.

[0007] According to some embodiments of the present invention, the first threading end has a housing snap-fit ​​portion on the outer wall of the first receiving groove, and the first cover has a cover snap-fit ​​portion, wherein the housing snap-fit ​​portion and the cover snap-fit ​​portion are snap-fitted together.

[0008] According to some embodiments of the present invention, the first threading end has a housing guide portion on the outer wall of the first receiving groove, and the first cover has a cover guide portion. In the assembly direction of the first cover and the first threading end, the housing guide portion and the cover guide portion are guided and engaged.

[0009] According to some embodiments of the present invention, the number of the housing snap-fit ​​portion and the cap snap-fit ​​portion are both multiple and correspond one-to-one, and the number of the housing guide portion and the cap guide portion are both multiple and correspond one-to-one.

[0010] According to some embodiments of the present invention, the first cap presses against the first sealing block.

[0011] According to some embodiments of the present invention, the inverter plug further includes: a first sealing ring, the first sealing ring being sleeved on the first housing, the first sealing ring being used to seal the connection between the first housing and the inverter casing.

[0012] According to some embodiments of the present invention, the inverter plug further includes: a first locking tab, the first locking tab being inserted and fixed to the first housing, the first locking tab engaging with the first wiring harness.

[0013] An electrical system according to another embodiment of the present invention includes an inverter and the inverter plug described above.

[0014] According to an embodiment of the electrical system of the present invention, the first wire-passing end of the inverter plug has a first receiving groove, a first sealing block is disposed in the first receiving groove, a first cover blocks the opening of the first receiving groove, and a first wire harness passes through the first cover, the first sealing block and the first housing. The first cover and the first sealing block can prevent moisture in the inverter from entering the first plug end along the first wire harness, thereby achieving a waterproof function, avoiding inverter plug failure, and improving the safety and reliability of the electrical system.

[0015] According to some embodiments of the present invention, the electrical system further includes a wire harness plug, the wire harness plug comprising: a second housing, the two ends of the second housing being a second plug-in end and a second wire-passing end, the second plug-in end being plugged into and connected to the first plug-in end, the second wire-passing end having a second receiving groove; a second sealing block, the second sealing block being disposed in the second receiving groove, the second sealing block being sealed to the inner wall of the second receiving groove; a second cover, the second cover being detachably connected to the second wire-passing end, and the second cover blocking the opening of the second receiving groove; and a second wire harness, the second wire harness passing through the second cover, the second sealing block and the second housing.

[0016] According to some embodiments of the present invention, the wire harness plug further includes: a second sealing ring, the second sealing ring being disposed at the second plug end, the second sealing ring being used to seal the connection between the first plug end and the second plug end.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is an exploded view of the inverter plug according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of the inverter plug according to an embodiment of the present invention; Figure 3 This is a partial structural diagram of an inverter plug according to an embodiment of the present invention. Figure 1 ; Figure 4 This is a partial structural diagram of an inverter plug according to an embodiment of the present invention. Figure 2 ; Figure 5 This is a cross-sectional view of an electrical system according to an embodiment of the present invention; Figure 6 This is an exploded view of a wire harness plug according to an embodiment of the present invention; Figure 7 This is a cross-sectional view of a wire harness plug according to an embodiment of the present invention; Figure 8 This is a schematic diagram of an inverter plug and a wiring harness plug according to an embodiment of the present invention.

[0019] Figure label: Inverter plug 1; first housing 11; first plug-in terminal 111; first wire threading terminal 112; first receiving groove 1121; housing snap-fit ​​part 1122; housing guide part 1123; first sealing block 12; first cover 13; cover snap-fit ​​part 131; first wire harness 14; first sealing ring 15; first locking insert 16; Wire harness plug 2; second housing 21; second plug end 211; second wire threading end 212; second receiving groove 2121; second sealing block 22; second cover 23; second wire harness 24; second sealing ring 25; second locking insert 26; Inverter 3; Cabinet 31; Electrical system 100. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] The inverter plug 1 and electrical system 100 according to embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Reference Figures 1-5 As shown, the inverter plug 1 includes: a first housing 11, a first sealing block 12, a first cover 13, and a first wiring harness 14. The first housing 11 is adapted to be fixed on the inverter 3. The two ends of the first housing 11 are a first plug-in end 111 and a first wire-passing end 112, respectively. The first plug-in end 111 is located outside the inverter 3, and the first wire-passing end 112 is located inside the inverter 3. The first wire-passing end 112 has a first receiving groove 1121. The first sealing block 12 is disposed in the first receiving groove 1121 and is sealed to the inner wall of the first receiving groove 1121. The first cover 13 is detachably connected to the first wire-passing end 112 and blocks the opening of the first receiving groove 1121. The first wiring harness 14 passes through the first cover 13, the first sealing block 12, and the first housing 11.

[0026] Specifically, inverter plug 1 can be used in the vehicle's inverter 3. Inverter plug 1 can be connected to wiring harness plug 2 to transmit low-voltage signals such as CAN signals and resolver signals.

[0027] The first housing 11 can be installed on the inverter 3. The first plug-in end 111 of the first housing 11 is located outside the inverter 3 so as to be connected to the wire harness plug 2. The first wire-passing end 112 of the first housing 11 is located inside the inverter 3 so as to be connected to the first wire harness 14.

[0028] The first threading end 112 has a first receiving groove 1121, and a first sealing block 12 is disposed in the first receiving groove 1121. The first sealing block 12 is sealed with the inner wall of the first receiving groove 1121 to achieve a waterproof sealing function.

[0029] The first cover 13 blocks the opening of the first receiving groove 1121. The first cover 13 can protect and fix the first sealing block 12 to prevent the first sealing block 12 from coming out of the opening of the first receiving groove 1121. At the same time, the first cover 13 is detachably connected to the first wire end 112 to facilitate the assembly and replacement of the first sealing block 12.

[0030] The first wiring harness 14 passes through the first cover 13, the first sealing block 12 and the first housing 11. When condensation occurs during the operation of the inverter 3, the first cover 13 and the first sealing block 12 can prevent the dew from entering the first wire end 112 from the first plug end 111 along the first wiring harness 14, thereby avoiding the inverter plug 1 from malfunctioning.

[0031] According to an embodiment of the present invention, the inverter plug 1 has a first receiving groove 112 at the first wire-passing end of the first housing 11, a first sealing block 12 disposed in the first receiving groove 1121, a first cover 13 blocking the opening of the first receiving groove 1121, and a first wire harness 14 passing through the first cover 13, the first sealing block 12 and the first housing 11. The first cover 13 and the first sealing block 12 can prevent moisture in the inverter 3 from entering the first plug end 111 along the first wire harness 14, thereby achieving a waterproof function and preventing inverter plug 1 from malfunctioning.

[0032] In some embodiments of the present invention, the first sealing block 12 includes: a first sealing plug and a first plug sealing ring. The first sealing plug has a first wire hole, and a first wire harness 14 passes through the first wire hole and is interference-fitted with the first wire hole to achieve a seal. The first plug sealing ring is sleeved on the first sealing plug and is used to seal the connection between the first sealing plug and the inner wall of the first receiving groove 1121.

[0033] In some embodiments of the present invention, reference is made to... Figures 1-4As shown, the first wire end 112 has a housing snap-fit ​​portion 1122 on the outer wall of the first receiving groove 1121, and the first cover 13 has a cover snap-fit ​​portion 131. The housing snap-fit ​​portion 1122 and the cover snap-fit ​​portion 131 snap-fit ​​together, and the snap-fit ​​first wire end 112 and the first cover 13 are easy to assemble.

[0034] In other embodiments of the invention (not shown in the figures), the first cover 13 is detachably connected to the first thread end 112 by fasteners.

[0035] In some embodiments of the present invention, reference is made to... Figure 1 , Figure 2 and Figure 4 As shown, the first threading end 112 has a housing guide portion 1123 on the outer wall of the first receiving groove 1121, and the first cover 13 has a cover guide portion. In the assembly direction of the first cover 13 and the first threading end 112, the housing guide portion 1123 and the cover guide portion are guided and engaged. Specifically, one of the housing guide portion 1123 and the cover guide portion can be a guide groove, and the other of the housing guide portion 1123 and the cover guide portion can be a guide protrusion. In the assembly direction of the first cover 13 and the first wire end 112, the guide groove and the guide protrusion can guide and cooperate to facilitate the assembly of the first cover 13 and the first wire end 112, and to achieve a positioning function during assembly, so that the housing snap-fit ​​portion 1122 and the cover snap-fit ​​portion 131 are directly snapped together.

[0036] In some embodiments of the present invention, reference is made to... Figure 1 , Figure 2 and Figure 4 As shown, there are multiple housing locking portions 1122 and one-to-one corresponding cap locking portions 131 to improve the stability and reliability of the connection between the first wire end 112 and the first cap 13. There are multiple housing guide portions 1123 and one-to-one corresponding cap guide portions to improve the fitting accuracy and stability of the first wire end 112 and the first cap 13 during assembly.

[0037] Reference Figure 1 , Figure 2 and Figure 4 As shown, there are five housing snap-fit ​​parts 1122 and five cover snap-fit ​​parts 131, and two housing guide parts 1123 and two cover guide parts.

[0038] In some embodiments of the present invention, reference is made to... Figure 2As shown, the first cover 13 presses against the first sealing block 12. The first cover 13 can apply pressure to the first sealing block 12 at the position where it contacts the first sealing block 12, so that the first sealing block 12 is compressed. The compressed first sealing block 12 can better seal the first wire harness 14 passing through it, and can also improve the sealing effect between the first sealing block 12 and the inner wall of the first receiving groove 1121, thereby improving the waterproof and moisture-proof performance of the inverter plug 1.

[0039] In some embodiments of the present invention, reference is made to... Figure 1 , Figure 2 and Figure 5 As shown, the inverter plug 1 also includes a first sealing ring 15, which is sleeved on the first housing 11. The first sealing ring 15 is used to seal the connection between the first housing 11 and the casing 31 of the inverter 3 to prevent moisture from entering the inverter 3 or the inverter plug 1 from the gap between the first housing 11 and the casing 31 of the inverter 3, thereby improving the safety of the inverter plug 1.

[0040] In some embodiments of the present invention, reference is made to... Figure 1 and Figure 2 As shown, the inverter plug 1 also includes: a first locking tab 16, which is fixed to the first housing 11. The first locking tab 16 locks with the first wiring harness 14. The first locking tab 16 can achieve secondary locking and fixing of the first wiring harness 14 and the first housing 11, so as to improve the connection strength between the first wiring harness 14 and the first housing 11 and reduce the risk of the first wiring harness 14 loosening or moving relative to the first housing 11.

[0041] Reference Figure 2 and Figure 5 As shown, the first locking insert 16 is located between the first sealing ring 15 and the first cover 13. The first sealing ring 15 can prevent water vapor from entering the first housing 11 through the position where the first locking insert 16 is inserted into the first housing 11.

[0042] Reference Figures 1-5 As shown, an electrical system 100 according to another embodiment of the present invention includes an inverter 3 and an inverter plug 1 as described in the above embodiment.

[0043] According to an embodiment of the present invention, the first wire insertion end 112 of the inverter plug 1 has a first receiving groove 1121, a first sealing block 12 is disposed in the first receiving groove 1121, a first cover 13 blocks the opening of the first receiving groove 1121, and a first wire harness 14 passes through the first cover 13, the first sealing block 12 and the first housing 11. The first cover 13 and the first sealing block 12 can prevent moisture in the inverter 3 from entering the first plug end 111 along the first wire harness 14, thereby achieving a waterproof function, avoiding inverter plug 1 failure, and improving the safety and reliability of the electrical system 100.

[0044] In some embodiments of the present invention, reference is made to... Figures 5-8 As shown, the electrical system 100 also includes a wire harness plug 2, which includes a second housing 21, a second sealing block 22, a second cover 23, and a second wire harness 24. The two ends of the second housing 21 are a second plug-in end 211 and a second wire-passing end 212, respectively. The second plug-in end 211 is plugged into and connected to the first plug-in end 111. The second wire-passing end 212 has a second receiving groove 2121. The second sealing block 22 is disposed in the second receiving groove 2121 and is sealed to the inner wall of the second receiving groove 2121. The second cover 23 is detachably connected to the second wire-passing end 212 and blocks the opening of the second receiving groove 2121. The second wire harness 24 passes through the second cover 23, the second sealing block 22, and the second housing 21.

[0045] Specifically, the second plug-in end 211 of the second housing 21 can be plugged into and engaged with the first plug-in end 111 of the first housing 11, so that the first wire harness 14 and the second wire harness 24 are connected. The second wire-passing end 212 of the second housing 21 is used to connect the second wire harness 24.

[0046] The second threading end 212 has a second receiving groove 2121, and a second sealing block 22 is disposed in the second receiving groove 2121. The second sealing block 22 is sealed with the inner wall of the second receiving groove 2121 to achieve a waterproof sealing function.

[0047] The second cover 23 blocks the opening of the second receiving groove 2121. The second cover 23 can protect and fix the second sealing block 22 to prevent the second sealing block 22 from coming out of the opening of the second receiving groove 2121. At the same time, the second cover 23 is detachably connected to the second wire end 212 to facilitate the assembly and replacement of the second sealing block 22.

[0048] The second wiring harness 24 passes through the second cover 23, the second sealing block 22, and the second housing 21. The second cover 23 and the second sealing block 22 can prevent moisture from entering the second wiring end 212 from the second plug end 211 along the second wiring harness 24, thereby reducing the risk of electrical system 100 failure.

[0049] In some embodiments of the present invention, the second sealing block 22 includes: a second sealing plug and a second plug sealing ring. The second sealing plug has a second wire hole, and the second wire harness 24 passes through the second wire hole and is interference-fitted with the second wire hole to achieve a seal. The second plug sealing ring is sleeved on the second sealing plug and is used to seal the connection between the second sealing plug and the inner wall of the second receiving groove 2121.

[0050] In some embodiments of the present invention, reference is made to... Figures 5-8 As shown, the wiring harness plug 2 also includes a second sealing ring 25, which is disposed on the second plug end 211. The second sealing ring 25 is used to seal the connection between the first plug end 111 and the second plug end 211 to improve the waterproof performance of the connection between the first plug end 111 and the second plug end 211, thereby improving the safety and reliability of the electrical system 100.

[0051] In some embodiments of the present invention, reference is made to... Figures 5-8 As shown, the wire harness plug 2 also includes a second locking tab 26, which is inserted and fixed to the second housing 21. The second locking tab 26 locks with the second wire harness 24. The second locking tab 26 can achieve secondary locking and fixing of the second wire harness 24 and the second housing 21, thereby improving the connection strength between the second wire harness 24 and the second housing 21 and reducing the risk of the second wire harness 24 becoming loose or shifting relative to the second housing 21.

[0052] It should be noted that, of the wire harness plug 2 and the inverter plug 1, one is a male plug and the other is a female plug. After the two are plugged in, the first wire harness 14 and the second wire harness 24 are connected.

[0053] In one specific embodiment of the present invention, the first housing 11 is a PA resin component with a stainless steel bushing, and its color is black and gray. The first locking insert 16 is a PA resin component, and its color is beige. The first sealing ring 15 is a silicone rubber component, and its color is red. The first sealing block 12 is a silicone rubber component, and its color is red. The first cover 13 is a PBT resin component, and its color is gray. The second housing 21 is a PA resin component, and its color is black and gray. The second locking insert 26 is a PA resin component, and its color is beige. The second sealing ring 25 is a silicone rubber component, and its color is red. The second sealing block 22 is a silicone rubber component, and its color is red. The second cover 23 is a PBT resin component, and its color is gray.

[0054] Reference Figure 5 As shown, the wiring harness plug 2 and the inverter plug 1 are plugged in to form the vehicle's low-voltage connector, wherein: The second sealing block 22 seals the space between the second wiring harness 24 and the second housing 21. This seal effectively prevents external water from entering the low-pressure connector from the second wiring harness 24. The theoretical size of the first receiving groove 1121 at this location is 17.3 mm, the theoretical size of the long side of the first sealing plug is 16.8 mm, the radius of the first plug sealing ring is 0.35 mm, and the theoretical compression rate of the first plug sealing ring is: [0.35 - (17.26 - 16.8) / 2] / 0.35 = 34.3%.

[0055] The second sealing ring 25 seals the connection point between the wiring harness plug 2 and the inverter plug 1. This seal effectively prevents external water from entering through the connector mating gap. The second sealing ring 25 is mounted on the second housing 21. The theoretical dimension of the mounting position of the second housing 21 is 17.7 mm, and the theoretical dimension of the mating position of the first housing 11 is 20.7 mm. The pad height of the second sealing ring 25 is 1.15 mm, and the ring height is 0.52 mm. The theoretical compression rate of the second sealing ring 25 is: {0.52-[(20.7-17.7) / 2-1.15]} / 0.52=32.5%.

[0056] The first sealing ring 15 seals the space between the first housing 11 and the inverter 3's enclosure 31. This seal prevents moisture from entering through the assembly gap between the first housing 11 and the inverter 3's enclosure 31. The first sealing ring 15 is fitted onto the first housing 11. The theoretical size of the first housing 11 at this position is 20.5 mm, and the theoretical size of the hole on the enclosure 31 of the inverter 3 is 26.6 mm. The first sealing ring 15 has a pad height of 2.48 mm and a ring height of 0.83 mm. The theoretical compression rate of the first sealing ring 15 is: {0.83-[(26.6-20.5) / 2-2.48]} / 0.83=31.3%.

[0057] The first sealing block 12 seals the space between the first wire harness 14 and the first housing 11. This seal is a newly added structure that can effectively prevent internal condensation from affecting the low-voltage connector and protect it so that it can be used normally. The theoretical size of the first receiving groove 1121 at this location is 18.1 mm, the theoretical size of the long side of the first sealing plug is 17.64 mm, the radius of the first plug sealing ring is 0.35 mm, and the theoretical compression rate of the first plug sealing ring is: [0.35-(18.1-17.64) / 2] / 0.35=34.3%.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An inverter plug, characterized in that, include: A first housing (11) is adapted to be fixed on an inverter (3). The two ends of the first housing (11) are a first plug-in end (111) and a first wire-through end (112), respectively. The first plug-in end (111) is located outside the inverter (3), and the first wire-through end (112) is located inside the inverter (3). The first wire-through end (112) has a first receiving groove (1121). The first sealing block (12) is disposed in the first receiving groove (1121) and the first sealing block (12) is sealed to the inner wall of the first receiving groove (1121); The first cover (13) is detachably connected to the first thread end (112), and the first cover (13) blocks the opening of the first receiving groove (1121); The first wire harness (14) passes through the first cover (13), the first sealing block (12) and the first housing (11).

2. The inverter plug according to claim 1, characterized in that, The first threading end (112) has a housing snap-fit ​​part (1122) on the outer wall of the first receiving groove (1121), and the first cover (13) has a cover snap-fit ​​part (131). The housing snap-fit ​​part (1122) and the cover snap-fit ​​part (131) are engaged.

3. The inverter plug according to claim 2, characterized in that, The first threading end (112) has a housing guide portion (1123) on the outer wall of the first receiving groove (1121), and the first cover (13) has a cover guide portion. In the assembly direction of the first cover (13) and the first threading end (112), the housing guide portion (1123) and the cover guide portion are guided and engaged.

4. The inverter plug according to claim 3, characterized in that, The number of the housing latching part (1122) and the cap latching part (131) are both multiple and correspond one-to-one, and the number of the housing guide part (1123) and the cap guide part are both multiple and correspond one-to-one.

5. The inverter plug according to any one of claims 1-4, characterized in that, The first cap (13) presses against the first sealing block (12).

6. The inverter plug according to claim 1, characterized in that, The inverter plug further includes a first sealing ring (15), which is fitted onto the first housing (11) and is used to seal the connection between the first housing (11) and the casing (31) of the inverter (3).

7. The inverter plug according to claim 1, characterized in that, The inverter plug further includes: a first locking tab (16), which is fixed to the first housing (11) and locks in engagement with the first wiring harness (14).

8. An electrical system, characterized in that, Includes an inverter (3) and an inverter plug according to any one of claims 1-7.

9. The electrical system according to claim 8, characterized in that, The electrical system also includes a wiring harness plug (2), the wiring harness plug (2) comprising: The second housing (21) has a second plug-in end (211) and a second wire-through end (212) at its two ends respectively. The second plug-in end (211) is plugged into and connected to the first plug-in end (111). The second wire-through end (212) has a second receiving groove (2121). The second sealing block (22) is disposed in the second receiving groove (2121), and the second sealing block (22) is sealed to the inner wall of the second receiving groove (2121); The second cover (23) is detachably connected to the second thread end (212), and the second cover (23) blocks the opening of the second receiving groove (2121); The second wiring harness (24) passes through the second cover (23), the second sealing block (22) and the second housing (21).

10. The electrical system according to claim 9, characterized in that, The wire harness plug (2) further includes a second sealing ring (25), which is disposed on the second plug end (211) and is used to seal the connection between the first plug end (111) and the second plug end (211).

Images