Three-phase wiring seat

Abstract

The utility model discloses a three-phase wiring seat, which comprises a three-phase copper bar, a wiring seat body coated on the three-phase copper bar, and an outer sealing element arranged on the outer peripheral surface of the wiring seat body, the wire holder body is provided with a sealing port, the sealing port is filled with sealant, and the sealant completely wraps the three-phase copper bar. According to the three-phase wiring seat provided by the utility model, the wire holder body is provided with the sealing port, the sealing port is filled with the sealant which completely wraps the three-phase copper bars, and the sealant can be filled after the wire holder body is subjected to plastic coating production, so that gas can be prevented from leaking from a gap between the surfaces of the three-phase copper bars and the wire holder body; meanwhile, the arranged outer sealing piece can ensure the sealing performance of the matching part of the three-phase wiring seat and the motor or the electric control shell seat; in this way, the overall sealing performance of the wire holder body is effectively guaranteed, the wire holder body has good sealing performance, and the risk of gas leakage after the three-phase wire holder is installed can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a three-phase terminal block. Background Art

[0002] Traditional electric vehicles have separate motors and electronic controls. The three-phase terminal block is the high-voltage component connecting the motor and the electronic control. The electronic control outputs high-voltage three-phase current to drive the motor. Currently, three-phase terminal blocks typically consist of a three-phase copper busbar and a housing overmolded with plastic. Sealing is achieved by placing a sealing ring on the connector end of the housing. However, during the cooling and shrinkage process after high-temperature injection molding, the copper busbar shrinks inward and the plastic overmolding shrinks outward, creating a gap between the copper busbar and the housing. This can allow gas inside the motor cavity to flow from the copper busbar surface into the electronic control cavity. This design has minimal impact on water-cooled motors, but for oil-cooled motors, high-temperature mixed oil and gas can enter the electronic control and affect its proper operation. Therefore, the sealing structure of the three-phase terminal block is more demanding. Conventional methods typically apply sealant to the junction between the copper busbar and the housing at the connector end of the three-phase terminal block to reduce the risk of gas leakage from the copper busbar surface. However, the reliability and consistency of the sealant application are relatively low, and its quality cannot be guaranteed.

[0003] Therefore, there is an urgent need to provide a new three-phase terminal block that is required to have good sealing performance and can reduce the risk of gas leakage after the three-phase terminal block is installed. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a three-phase terminal block with good sealing performance, which can reduce the risk of gas leakage after the three-phase terminal block is installed.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a three-phase terminal block, comprising a three-phase copper busbar, a terminal block body plastic-coated on the three-phase copper busbar, and an external sealing member arranged on the outer peripheral surface of the terminal block body; a sealing opening is provided on the terminal block body, the sealing opening is filled with sealant, and the sealant completely covers the three-phase copper busbar.

[0006] Furthermore, the sealing port includes three sealing holes provided on the terminal block body, and the three sealing holes are respectively provided corresponding to the three copper bars of the three-phase copper bar.

[0007] Furthermore, the sealing hole is a through hole structure that penetrates the main body of the terminal block.

[0008] Furthermore, the sealing hole is a rectangular hole, and the width of the rectangular hole along the length direction of the three-phase copper busbar ranges from 2 mm to 4 mm.

[0009] Furthermore, the three sealing holes are arranged side by side along the arrangement direction of the three-phase copper busbars.

[0010] Furthermore, the terminal block body comprises a plug-in portion and a flange connection portion, and the three sealing holes are located on the plug-in portion.

[0011] Furthermore, an annular sealing groove is provided on the outer peripheral surface of the plug-in portion, and the outer sealing member is a sealing ring provided in the annular sealing groove.

[0012] Furthermore, the outer circumference and the inner circumference of the sealing ring are both provided with corrugated sealing parts with a corrugated cross section.

[0013] Furthermore, the sealing hole is located between the annular sealing groove and the flange connection portion.

[0014] Furthermore, the sealant is a high temperature resistant airtight sealant.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The three-phase terminal block provided by the utility model has a sealing opening provided on the terminal block body and a sealing glue which completely covers the three-phase copper busbar in the sealing opening. The sealing glue can be filled after the terminal block body is plastic-wrapped, so as to avoid gas leakage from the gap between the surface of the three-phase copper busbar and the terminal block body; at the same time, the provided external sealing member can ensure the sealing of the joint between the three-phase terminal block and the motor or electronic control housing seat; in this way, the sealing of the entire terminal block body is effectively guaranteed, and it has good sealing performance, which can reduce the risk of gas leakage after the three-phase terminal block is installed; at the same time, because the sealant is filled in the specially preset sealing opening, the filling consistency and reliability are good, and the sealing effect is good.

[0017] Other advantages, objectives, and features of the present invention will be described in detail in the following description and, to some extent, will be apparent to those skilled in the art upon examination and study of the following or may be learned from practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Axonometric drawing of the overall structure of this utility model

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model

[0020] Figure 3 Schematic diagram of the cross-section structure of the outer seal

[0021] Reference numerals: 1-terminal block; 2-three-phase copper busbar; 3-external seal DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments. The details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only used to illustrate the basic concept of the present invention. The following embodiments and the features in the embodiments can be combined with each other without conflict.

[0023] See also Figure 1-3 , this embodiment discloses a three-phase terminal block, comprising a three-phase copper busbar 2, a terminal block body 1 plastic-coated on the three-phase copper busbar 2, and an outer sealing member 3 arranged on the outer circumferential surface of the terminal block body 1; the terminal block body 1 is provided with a sealing opening 101, the sealing opening 101 is filled with a sealant 4, and the sealant 4 completely covers the three-phase copper busbar 2; here, the outer sealing member 3 can be a sealing ring or a sealing gasket, etc., which can ensure the external seal of the terminal block body 1 and the motor or electronic control housing for installation and matching, which is not limited here; it can be understood that the filled sealant 4 is tightly combined with the terminal block body 1 and the three-phase copper busbar 2; here, the sealing opening 101 can be an integral hole that includes all three copper bars of the three-phase copper busbar 2, of course, it can also be a plurality of independent holes set separately for each copper bar;

[0024] The three-phase terminal block in the above structure is provided with a sealing opening 101 on the terminal block body 1, and the sealing opening 101 is filled with a sealant 4 that completely covers the three-phase copper busbar 2. The sealant 4 can be filled after the terminal block body 1 is overmolded, so as to prevent gas from leaking from the gap between the surface of the three-phase copper busbar 2 and the terminal block body 1; at the same time, the provided outer seal 3 can ensure the sealing of the joint between the three-phase terminal block and the motor or electronic control housing seat; in this way, the overall sealing of the terminal block body is effectively guaranteed, with good sealing performance, which can reduce the risk of gas leakage after the three-phase terminal block is installed; at the same time, since the sealant 4 is filled in the specially preset sealing opening 101, the filling consistency and reliability are good, and the sealing effect is good.

[0025] In this embodiment, the sealing port 101 includes three sealing holes 101a arranged on the terminal block body 1, and the three sealing holes 101a are respectively arranged corresponding to the three copper bars of the three-phase copper bar 2; this structural design, by setting the sealing port 101 as three independent sealing holes 101a structures arranged corresponding to the three copper bars, can make the size of a single sealing hole 101a not need to be designed too large, and the filling effect of the sealant 4 is conducive to further improving the sealing quality; at the same time, the strength weakening effect on the terminal block body 1 is less, which is conducive to ensuring the overall structural strength of the terminal block body 1 and ensuring reliability of use.

[0026] In this embodiment, the sealing hole 101a is a through-hole structure that penetrates the main body of the terminal block 1. It can be understood that the through-hole 101a exposes the three-phase copper busbar 2, ensuring that the sealant 4 can cover each of the three-phase copper busbars 2, thereby ensuring the circumferential sealing between the copper busbar and the terminal block body 1. When in use, the sealant can be filled after blocking one end of the through-hole with a baffle. The through-hole structure is designed to facilitate the design of the plastic mold for the terminal block body 1 and facilitate demoulding, thereby reducing manufacturing costs.

[0027] In this embodiment, the sealing hole 101a is a rectangular hole, and the width of the rectangular hole along the length direction of the three-phase copper busbar 2 ranges from 2mm to 4mm; the rectangular hole structure is adapted to the shape of the copper busbar, which is conducive to reducing the opening size and reducing the strength weakening of the terminal block body 1; the width range of 2mm-4mm is reasonable in size, and the sealing effect is good after filling with sealant.

[0028] In this embodiment, the three sealing holes 101a are arranged side by side along the arrangement direction of the three-phase copper busbars 2. The side-by-side arrangement is reasonable and helps to simplify the mold structure and reduce manufacturing costs.

[0029] In this embodiment, the terminal block body 1 has a plug-in portion 102 and a flange connection portion 103, and the three sealing holes 101a are located on the plug-in portion 102; specifically, the flange connection portion 103 is provided with a positioning pin and a mounting hole, and the installation with the motor or electronic control housing can be completed by screws, and the plug-in portion 102 can be inserted into the mounting hole designed on the motor or electronic control housing; this structural design, through the design of the plug-in portion 102 and the flange connection portion 103, is conducive to the rapid and stable installation of the terminal block body 1, and the sealing hole 101a is designed on the plug-in portion 102, and the position is reasonable, which is conducive to the processing and production of the sealing hole 101a.

[0030] In this embodiment, an annular sealing groove 102a is provided on the outer peripheral surface of the plug-in part 102, and the outer sealing member 3 is a sealing ring arranged in the annular sealing groove 102a. The outer sealing of the terminal block body 1 is completed by adopting a radial sealing method, which has a good sealing effect and is conducive to further improving the overall sealing performance.

[0031] In this embodiment, a corrugated sealing portion 3a with a corrugated cross-section is provided on both the outer circumference and the inner circumference of the sealing ring; by providing a corrugated sealing portion 3a with a corrugated cross-section on both the outer circumference and the inner circumference of the sealing ring, it is conducive to forming multiple seals, thereby further improving the overall sealing performance.

[0032] In this embodiment, the sealing hole 101a is located between the annular sealing groove 102a and the flange connection portion 103; the reasonable location is conducive to the manufacturing and processing of the sealing hole 101a, and reduces the manufacturing cost.

[0033] In this embodiment, the sealant 4 is a high-temperature resistant airtight sealant, and existing high-temperature resistant airtight sealants such as silicone sealant, polysiloxane sealant, etc. are used here; since the motor generates high heat, the use of high-temperature resistant airtight sealant can improve service life and reliability.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A three-phase terminal block, characterized in that: The invention comprises a three-phase copper busbar (2), a terminal block body (1) plastic-coated on the three-phase copper busbar (2), and an outer sealing member (3) arranged on the outer peripheral surface of the terminal block body (1); the terminal block body (1) is provided with a sealing opening (101), the sealing opening (101) is filled with a sealing glue (4), and the sealing glue (4) completely covers the three-phase copper busbar (2).

2. The three-phase terminal block according to claim 1, characterized in that: The sealing opening (101) comprises three sealing holes (101a) provided on the terminal block body (1), and the three sealing holes (101a) are respectively provided corresponding to the three copper bars of the three-phase copper bar (2).

3. The three-phase terminal block according to claim 2, characterized in that: The sealing hole (101a) is a through-hole structure that penetrates the main body of the wiring seat (1).

4. The three-phase terminal block according to claim 2 or 3, characterized in that: The sealing hole (101a) is a rectangular hole, and the width of the rectangular hole along the length direction of the three-phase copper busbar (2) ranges from 2 mm to 4 mm.

5. The three-phase terminal block according to any one of claims 2 to 4, characterized in that: The three sealing holes (101a) are arranged side by side along the arrangement direction of the three-phase copper busbars (2).

6. The three-phase terminal block according to any one of claims 2 to 5, characterized in that: The terminal seat body (1) comprises a plug-in portion (102) and a flange connection portion (103), and the three sealing holes (101a) are located on the plug-in portion (102).

7. The three-phase terminal block according to claim 6, characterized in that: An annular sealing groove (102a) is provided on the outer peripheral surface of the plug-in portion (102), and the outer sealing member (3) is a sealing ring provided in the annular sealing groove (102a).

8. The three-phase terminal block according to claim 7, characterized in that: The outer circumference and the inner circumference of the sealing ring are both provided with a corrugated sealing portion (3a) with a corrugated cross section.

9. The three-phase terminal block according to claim 7, characterized in that: The sealing hole (101a) is located between the annular sealing groove (102a) and the flange connection portion (103).

10. The three-phase terminal block according to any one of claims 1 to 9, characterized in that: The sealant (4) is a high-temperature resistant airtight sealant.

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