Transmission high voltage connector

Abstract

The present invention provides a gearbox high-voltage connector for circuit connection of a new energy vehicle gearbox, the gearbox includes a box and a high-voltage connector covering the opening of the box, the high-voltage connector includes a shell, at least one reinforcing sheet and a copper bar, the copper bar is inserted and connected to the shell; wherein the shell is an N-sided body, the shell has a maximum of N-1 fixing holes, the fixing holes are located at the position where two side lines are connected; at the position where the two side lines are connected without the fixing holes, the shell covers and connects the reinforcing sheet. The present application has a simple structure, increased strength, and is resistant to high temperature deformation.

Description

Technical Field

[0001] The present invention relates to a high-voltage connector, and in particular to a high-voltage connector used in a circuit connection system of a gearbox of a new energy vehicle. Background Art

[0002] With the development of science and technology, the advancement of technology, automotive products are changing with each passing day, and higher requirements are also placed on circuit connector products. Automotive parts are an important area for my country's automotive industry to participate in globalization.

[0003] In new energy vehicles, the high-voltage connector installed in the body gearbox plays a very important role. In high voltage and high current environments, good sealing performance, reliable power distribution and conduction have become the core and key to the safety of new energy vehicles. The shell of the high-voltage connector in the existing technology is made of plastic. In the high and low temperature staggered environment (the maximum ambient temperature of the gearbox is 150), when there is no space to install the fixing screw at some angles, the strength is insufficient, the plastic parts are deformed, and the sealing fails; the dimensional stability is not good.

[0004] Therefore, there is still room for improvement in the high voltage connectors of the prior art. Summary of the invention

[0005] In view of the above-mentioned defects, the present invention provides a high-voltage connector with a reliable and stable structure, which is used in the circuit connection system of the gearbox of a new energy vehicle, so as to solve the existing technical problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A gearbox high-voltage connector is used for circuit connection of a gearbox of a new energy vehicle. The gearbox includes a box and a high-voltage connector covering an opening of the box. The high-voltage connector includes a shell, at least one reinforcement sheet and a copper bar, and the copper bar is inserted and connected to the shell; wherein the shell is an N-gon body, and the shell has at most N-1 fixing holes, and the fixing holes are located at the position where two side lines are connected; at the position where two side lines are connected without the fixing holes, the shell covers and connects the reinforcement sheet.

[0008] In the gearbox high-voltage connector described in the preferred embodiment of the present application, the reinforcing plate is an angled elastic metal sheet.

[0009] In the gearbox high-voltage connector described in the preferred embodiment of the present application, the reinforcement plate includes a raised reinforcement portion, the housing has a groove formed at a position corresponding to the raised reinforcement portion, and the bottom surface of the groove includes a groove raised portion.

[0010] In the gearbox high-voltage connector described in the preferred embodiment of the present application, the copper busbar includes at least two copper sheets, a stepped through hole is provided at the position where the shell is connected to the copper sheets, and the aperture of the stepped through hole on the upper side is larger than the aperture on the lower side.

[0011] The gearbox high-pressure connector described in the preferred embodiment of the present application also includes at least two sealing rings and at least two sealing gaskets, the sealing rings and the sealing gaskets are connected to the upward side of the stepped through hole, the copper sheet is inserted to connect the sealing rings and the sealing gaskets, and the sealing gaskets are tightly connected to the stepped through hole.

[0012] The gearbox high-voltage connector described in the preferred embodiment of the present application, the shell also includes at least two partition ribs, the partition rib is an L-shaped sheet protruding from the shell, the partition rib is located on the upward side of the stepped through hole, corresponding to the position of the copper sheet.

[0013] The gearbox high-voltage connector described in the preferred embodiment of the present application, the housing also includes at least two slide grooves, the slide groove is a concave sheet protruding from the housing, the slide groove is located on the downward side of the stepped through hole, corresponding to the position of the copper sheet.

[0014] The design concept of this application is to redesign the high-voltage connector of the gearbox circuit. The main purpose is to strengthen the connector shell, add elastic metal reinforcement plates at positions prone to deformation, and increase assembly reliability.

[0015] Due to the adoption of the above technical features, the present invention has the following advantages and positive effects compared with the prior art:

[0016] First, the structure of the present application is simple, the reinforcing sheet increases the strength and is resistant to high temperature deformation;

[0017] Second, the application designs stepped through holes and slide grooves, which simplifies assembly and increases reliability.

[0018] Of course, any specific embodiment of the present invention does not necessarily have all of the above technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Exploded schematic diagram of high voltage connector for this application;

[0020] Figure 2 This is a schematic side view of the high voltage connector of the present application;

[0021] Figure 3 This is a schematic diagram of an exploded view of the high-voltage connector of this application from another angle;

[0022] Figure 4 is a schematic diagram of a reinforcement sheet;

[0023] Figure 5 is a schematic diagram of a raised reinforcement portion;

[0024] Figure 6 is a schematic diagram of the housing;

[0025] Figure 7 This is a schematic diagram of the connection between the copper sheet and the slide;

[0026] Figure 8 for Figure 7 A partially enlarged schematic diagram of . DETAILED DESCRIPTION

[0027] Several preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments. The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, processes, components, etc. are not described in detail.

[0028] Please refer to Figure 1 , Figure 2 and Figure 3, schematic diagram of the high-voltage connector of the present application, the gearbox high-voltage connector of the present application is used for circuit connection of the gearbox of a new energy vehicle, the gearbox includes a box body (not shown) and a high-voltage connector covering the opening of the box body, the high-voltage connector includes a shell 10, at least one reinforcement sheet 20 and a copper bar, the copper bar is inserted and connected to the shell 10; wherein, the shell 10 is an N-gon, the shell 10 has a maximum of N-1 fixing holes 11, and the fixing holes 11 are located at the position where two side lines are connected; at the position where two side lines are connected without the fixing holes 11, the shell 10 covers and connects the reinforcement sheet 20. That is to say, the N sides of the shell 10 form N angles, and at least one of these angles does not have a fixing hole 11 next to it. The reason why the fixing hole 11 is not provided is because there is no space for it. The purpose of setting the fixing hole 11 is to lock the shell 10 and the housing with screws to prevent the oil in the housing from leaking out, and to restore the shell 10 that has been deformed by heat. As mentioned above, the ambient temperature of the gearbox can reach 150 degrees. At this high temperature, the shell 10 made of plastic gradually deforms at the angle where there is no screw locking. Finally, a gap is generated between the shell 10 and the housing, forming a fault. So what we do is to cover and connect a reinforcing sheet 20 inside the shell 10 at the position where there is no angle of the fixing hole 11. As shown in the figure, the shell 10 of the present application is a pentagon with five angles, four of which are provided with fixing holes 11, and one angle is limited by the space design and cannot be provided with a fixing hole 11.

[0029] Preferably, please refer to Figure 4 Schematic diagram of the reinforcing sheet, the reinforcing sheet 20 is an angled elastic metal sheet, this angle matches the angle of the shell, the reinforcing sheet 20 can be L-shaped or concave, as shown in the figure, the embodiment of the present application is concave, in order to enhance the bending strength, the reinforcing sheet 20 extends to the position of the fixing hole 11, and a through hole is opened at the corresponding position, when the screw locks the shell 10 and the box, locking them together can improve the bending strength. In addition, in terms of material selection, general metal materials are sufficient, but metal materials with elasticity have better recovery effects, such as stainless steel, stainless iron, spring steel, etc.

[0030] In addition, if Figure 5 As shown, under the enhanced effect, the reinforcing sheet 20 includes a raised reinforcing portion 21, and the housing 10 has a groove 12 at the position corresponding to the raised reinforcing portion 21, and the bottom surface of the groove 12 includes a groove raised portion 13. As shown in the figure, the raised reinforcing portion 21 is a reinforcing rib on the plane sheet body, which has a better effect of maintaining the shape when heated. The corresponding groove 12 and the groove raised portion 13 on the housing 10 help the raised reinforcing portion 21 resist bending and rebound.

[0031] The copper bar for conducting electricity includes at least two copper sheets 31, such as Figure 1 As shown, the number of copper sheets 31 in the embodiment of the present application is three, but as long as more or less copper sheets can achieve the purpose of conductivity, they should be within the protection scope of the present application; Figure 6 As shown, a stepped through hole 14 is provided at the position where the housing 10 is connected to the copper sheet 31, and the aperture of the stepped through hole 14 on the upper side is larger than the aperture on the lower side. The copper sheet 31 penetrates and connects the stepped through hole 14, and the through hole with a smaller aperture on the lower side of the stepped through hole 14 is tightly connected to the copper sheet 31.

[0032] In addition, if Figure 1 As shown, it also includes at least two sealing rings 40 and at least two sealing pads 50, the sealing rings 40 and the sealing pads 50 are connected to the upward side of the stepped through hole 14, the copper sheet 31 is inserted and connected to the sealing ring 40 and the sealing pad 50, the sealing pad 50 and the stepped through hole 14 are tightly connected, and the number of the sealing rings 40 and the sealing pad 50 is the same as the number of the copper sheets 31. As shown in the figure, the copper sheet 31 is first inserted into the sealing pad 50 and then into the sealing ring 40, the place where the sealing ring 40 and the stepped through hole 14 are connected includes a protruding connection clamping part, after the connection, the sealing pad 50 and the stepped through hole 14 are tightly connected, the sealing ring 40 and the copper sheet 31 can be tightly fitted in the stepped through hole 14, and the oil in the box body will not leak from the stepped through hole 14.

[0033] Preferably, please refer to Figure 1 and Figure 6 The housing 10 further includes at least two partition ribs 15. The number of the partition ribs 15 is mainly set with reference to the number of the copper sheets 31. The number of the partition ribs 15 can be less than the number of the copper sheets 31. As shown in the figure, in this embodiment, the number of the partition ribs 15 is two and the number of the copper sheets 31 is three, but this cannot be used to limit the present application. As long as the protection effect can be achieved, it should be within the protection scope of the present application. The partition rib 15 is an L-shaped sheet protruding from the housing 10. The partition rib 15 is located on the upward side of the stepped through hole 14, corresponding to the position of the copper sheet 31. The purpose of setting the partition rib 15 is to protect the copper sheet 31 from being accidentally touched.

[0034] Preferably, please refer to Figure 1 and Figure 6The housing 10 further includes at least two slide grooves 16. The number of the slide grooves 16 is mainly set with reference to the number of the copper sheets 31. Each copper sheet 31 corresponds to a slide groove 16. As shown in the figure, the number of the slide grooves 16 in the present application is three, but it cannot be used to limit the present application. The slide groove 16 is a concave sheet protruding from the housing 10. The slide groove 16 is located on the downward side of the stepped through hole 14, corresponding to the position of the copper sheet 31. The copper sheet 31 passes through the housing 10 and enters the slide groove 16. Under the guidance of the slide groove 16, it smoothly reaches the circuit connection position. Please refer to Figure 7 and Figure 8 , the slide groove 16 and the copper sheet 31 are interference fit, such as Figure 8 As shown, within the distance marked A, the copper sheet 31 and the slide groove 16 have an interference fit of 0-0.3mm, which prevents the copper sheet 31 from shaking inside the housing, improves the accuracy of the mounting hole, and facilitates installation. The holes opened on the upper and lower sides of the copper sheet 31 are circuit mounting holes. The positions of the holes need to be well done before installation. Before installation, the upper and lower directions are positioned by the sealing gasket 50, and the left and right directions are interference fit by the slide groove 16. After installation, it is fixed.

[0035] In summary, the copper sheet 31 is firmly assembled on the housing 10 by the friction of the sealing gasket 50, the friction of the stepped through hole 14 and the friction of the slide groove 16, and will not fall out or be misplaced; the housing 10 covers the connecting reinforcement sheet 20, which expands during operation of the gearbox and returns to its original size when not in operation. It will not be insufficient in strength or deformed to cause sealing failure and oil leakage after a long period of operation, and has good dimensional stability.

[0036] In summary, due to the adoption of the above technical features, the present invention has the following advantages and positive effects compared with the prior art:

[0037] First, the structure of the present application is simple, the reinforcing sheet increases the strength and is resistant to high temperature deformation;

[0038] Second, the application designs stepped through holes and slide grooves, which simplifies assembly and increases reliability.

[0039] The preferred embodiments of the invention are only used to help illustrate the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made based on the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the invention, so that technicians in the relevant technical field can make good use of the invention. The present invention is only limited by the claims and their full scope and equivalents. The above disclosure is only the preferred embodiment of the present invention, but it is not intended to limit itself. Any equivalent changes and modifications made by any technician familiar with the art without violating the spirit and connotation of the invention should fall within the scope of protection of the present invention.

Claims

1. A gearbox high-voltage connector, used for circuit connection of a new energy vehicle gearbox, the gearbox comprising a box and a high-voltage connector covering an opening of the box, characterized in that: The high voltage connector comprises a housing, at least one reinforcement sheet and a copper bar, wherein the copper bar is inserted and connected to the housing; The shell is an N-gon body, and the shell has a maximum of N-1 fixing holes, and the fixing holes are located at the position where two side lines are connected; at the position where the two side lines are connected without the fixing holes, the shell covers and connects the reinforcing sheet; the reinforcing sheet is an angled elastic metal sheet; The angle of the reinforcing sheet matches the angle of the outer shell, the reinforcing sheet extends to the position of the fixing hole, and a through hole is provided at the corresponding position, so that the outer shell and the box body are locked together when the screw locks the outer shell and the box body; The reinforcing sheet includes a raised reinforcing portion, the housing is provided with a groove at a position corresponding to the raised reinforcing portion, and the bottom surface of the groove includes a groove raised portion; The copper busbar includes at least two copper sheets, a stepped through hole is provided at the position where the housing is connected to the copper sheets, and the aperture of the stepped through hole facing upward is larger than the aperture of the aperture facing downward; It also includes at least two sealing rings and at least two sealing pads, wherein the sealing rings and the sealing pads are connected to the upward side of the stepped through hole, the copper sheet is inserted and connected to the sealing rings and the sealing pads, and the sealing pads are tightly connected to the stepped through hole.

2. The gearbox high-voltage connector according to claim 1, characterized in that: The shell further comprises at least two partition ribs, each of which is an L-shaped sheet protruding from the shell. The partition rib is located on the upward side of the stepped through hole, corresponding to the position of the copper sheet.

3. The gearbox high-voltage connector according to claim 1, characterized in that: The housing further comprises at least two slide grooves, wherein the slide groove is a concave sheet protruding from the housing, and the slide groove is located on the downward side of the stepped through hole, corresponding to the position of the copper sheet.

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