Large-current aluminum row connector

Abstract

The invention discloses a large-current aluminum row connector which comprises a pair of first screws, an end cover, a pair of second screws, a shell assembly, a pair of aluminum row assemblies and a plurality of third screws, and the shell assembly and the aluminum row assemblies are assembled to form a connector body. Under the condition that the manufacturing cost and the process complexity are not increased, the electrochemical corrosion at the aluminum-copper joint can be effectively reduced; the shape or the structure of the aluminum bar and the copper sleeve can be changed under the condition that the reliability and the stability of connection are not influenced, so that the occurrence of electrochemical corrosion is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of connectors, and in particular relates to a high-current aluminum busbar connector. Background Art

[0002] In the fields of electricity, electronics, communications, etc., aluminum-copper connection is a common connection method, mainly used to transmit current. However, due to the different electrode potentials of aluminum and copper, when they come into contact, a galvanic cell will be formed, resulting in electrochemical corrosion, which will not only affect the stability of the connection, but also may cause an increase in resistance, thereby affecting the transmission efficiency of current.

[0003] The existing solutions mainly add a layer of nickel or other metal as a transition layer between the aluminum busbar and the copper busbar to reduce the impact of electrochemical corrosion. In addition, there are some solutions that reduce the contact area of ​​the aluminum busbar and the copper busbar by changing their shape or structure, thereby reducing the occurrence of electrochemical corrosion, such as a high-voltage aluminum busbar connector with a patent online announcement number of CN218586365U. However, in practical applications, there are still some problems with the prior art: first, although the method of adding a transition layer can reduce electrochemical corrosion, it increases the manufacturing cost and process complexity; second, changing the shape or structure of the aluminum busbar and the copper busbar may affect the reliability and stability of the connection; in addition, the existing anti-corrosion equipment often cannot effectively prevent electrochemical corrosion at the aluminum-copper connection. Therefore, in view of the above problems, the high-current aluminum busbar connector provided by the present invention is of great significance. Summary of the invention

[0004] The present invention provides a high-current aluminum busbar connector, which can effectively reduce the electrochemical corrosion at the aluminum-copper connection without increasing the manufacturing cost and process complexity; the shape or structure of the aluminum busbar and the copper sleeve can be changed without affecting the reliability and stability of the connection to reduce the occurrence of electrochemical corrosion, thereby solving the problems in the background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A high-current aluminum bar connector of the present invention comprises a pair of first screws, an end cover, a pair of second screws, a shell assembly, a pair of aluminum bar assemblies, and a plurality of third screws. The shell assembly and the aluminum bar assembly are assembled to form a connector body;

[0007] The housing assembly comprises an end cover sealing ring, a housing body, a pair of rear mounting plates, a flange sealing ring, and a front mounting plate. The end cover is mounted on the top of the housing body by a first screw, and a plurality of threaded holes matching with a third screw are provided at the bottom end of the housing body.

[0008] Each of the aluminum bar components includes an aluminum bar body, a copper sleeve, a sealing body, and a tail cover. The aluminum bar body is inserted into the shell body and fixed by a second screw. The copper sleeve, the sealing body and the tail cover are all installed on the corresponding aluminum bar body.

[0009] Furthermore, the copper sleeve is fixedly connected to the aluminum bar body by torque welding, and the centers of the threaded holes on the surfaces of the copper sleeve and the aluminum bar body are located on the same straight line.

[0010] Furthermore, the shapes and sizes of the sealing body and the tail cover are the same as those of the aluminum busbar body, and the sealing body and the tail cover are sleeved on the aluminum busbar body in sequence.

[0011] Furthermore, a threaded hole matching with the second screw is formed on the top surface of the aluminum bar body, and the diameter of the threaded hole is equal to the diameter of the second screw.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) When used, a high-current aluminum busbar connector in the present invention can effectively reduce electrochemical corrosion at the aluminum-copper connection without increasing manufacturing cost and process complexity;

[0014] (2) When a high-current aluminum busbar connector in the present invention is used, the shape or structure of the aluminum busbar and the copper sleeve can be changed without affecting the reliability and stability of the connection to reduce the occurrence of electrochemical corrosion.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a high current aluminum busbar connector of the present invention;

[0018] Figure 2 It is a front cross-sectional view of a high-current aluminum busbar connector of the present invention;

[0019] Figure 3 The figure is a schematic diagram of assembling a high current aluminum busbar connector according to the present invention.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. First screw; 2. End cover; 3. Second screw; 4. Housing assembly; 4-1. End cover sealing ring; 4-2. Housing body; 4-3. Rear mounting plate; 4-4. Flange sealing ring; 5. Aluminum busbar assembly; 5-1. Aluminum busbar body; 5-2. Copper sleeve; 5-3. Wire sealing body; 5-4. Tail cover; 6. Third screw; 7. Connector body. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on 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.

[0023] In the description of the present invention, it should be understood that the terms "relative", "one end", "inside", "lateral", "end", "two ends", "both sides", "front", "one end face", "the other end face" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] See also Figure 1-3 As shown, a high current aluminum bar connector of the present invention comprises a pair of first screws 1, an end cover 2, a pair of second screws 3, a shell assembly 4, a pair of aluminum bar assemblies 5, and a plurality of third screws 6. The shell assembly 4 and the aluminum bar assembly 5 are assembled to form a connector body 7;

[0025] The housing assembly 4 includes an end cover sealing ring 4-1, a housing body 4-2, a pair of rear mounting plates 4-3, a flange sealing ring 4-4, and a front mounting plate 4-5. The end cover 2 is mounted on the top of the housing body 4-2 by a first screw 1, which can prevent moisture, dust and electric shock, and effectively prevent electrochemical corrosion. The housing body 4-2 is made of aluminum alloy, and a plurality of threaded holes matching the third screws 6 are opened at the bottom thereof;

[0026] Each aluminum bar assembly 5 includes an aluminum bar body 5-1, a copper sleeve 5-2, a sealing body 5-3, and a tail cover 5-4. The aluminum bar body 5-1 is inserted into the outer shell body 4-2 and fixed by a second screw 3. The copper sleeve 5-2, the sealing body 5-3 and the tail cover 5-4 are all installed on the corresponding aluminum bar body 5-1.

[0027] Among them, the copper sleeve 5-2 is fixedly connected to the aluminum bar body 5-1 by torque welding, and the centers of the threaded holes on the surfaces of the copper sleeve 5-2 and the aluminum bar body 5-1 are located on the same straight line. The second screw 3 can pass through the holes of the aluminum bar body 5-1 and the copper sleeve 5-2, and be locked to the installation interface adapter copper bar, thereby realizing circuit conduction.

[0028] Among them, the shapes and sizes of the sealing body 5-3 and the tail cover 5-4 are the same as those of the aluminum bar body 5-1, and the sealing body 5-3 and the tail cover 5-4 are sequentially mounted on the aluminum bar body 5-1. The aluminum bar body 5-1 can be inserted from the rear of the outer shell assembly 4. After hearing a click, pull it back. If it cannot be pulled, it means that the aluminum bar body 5-1 is installed in place. Then, the sealing body 5-3 and the tail cover 5-4 are also installed in the outer shell body 4-2 to obtain the connector body 7.

[0029] Among them, a threaded hole matching with the second screw 3 is opened on the top surface of the aluminum bar body 5-1, and the diameter of the threaded hole is equal to the diameter of the second screw 3. The second screw 3 can be aligned with and pass through the corresponding threaded hole to fix the aluminum bar body 5-1.

[0030] The standard parts used in the application documents can all be purchased from the market. All the components in this application document can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art.

[0031] The working principle of the present invention is:

[0032] When the present invention is in use, the aluminum bar body 5-1 can be inserted into the shell body 4-2 and fixed by the second screw 3, and then the copper sleeve 5-2, the sealing body 5-3 and the tail cover 5-4 are all installed on the corresponding aluminum bar body 5-1. The aluminum bar body 5-1 can be inserted from the rear of the shell assembly 4, and pulled back after hearing a click. If it cannot be pulled, it means that the aluminum bar body 5-1 is installed in place. Then the sealing body 5-3 and the tail cover 5-4 are also installed in the shell body 4-2 to obtain the connector body 7. The second screw 3 can pass through the aluminum bar body 5-1 and the copper sleeve 5-2 through the hole, and lock it to the installation interface transfer copper bar, so as to achieve circuit conduction. This solution connects the aluminum bar and the copper sleeve together by torque welding, avoids electrochemical corrosion caused by mechanical contact between copper and aluminum, and avoids the oxide layer generated on the contact surface of aluminum and copper, which leads to an increase in contact resistance between aluminum and copper. In addition, the assembly method of the aluminum bar is optimized, making it simple and easy to process, and welding is also easier.

[0033] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present 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 according to 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 present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high current aluminum busbar connector, characterized in that: It includes a pair of first screws, an end cover, a pair of second screws, a shell assembly, a pair of aluminum row assemblies, and a plurality of third screws. The shell assembly and the aluminum row assembly are assembled to form a connector body; The housing assembly comprises an end cover sealing ring, a housing body, a pair of rear mounting plates, a flange sealing ring, and a front mounting plate. The end cover is mounted on the top of the housing body by a first screw, and a plurality of threaded holes matching with a third screw are provided at the bottom end of the housing body. Each of the aluminum bar components includes an aluminum bar body, a copper sleeve, a sealing body, and a tail cover. The aluminum bar body is inserted into the shell body and fixed by a second screw. The copper sleeve, the sealing body and the tail cover are all installed on the corresponding aluminum bar body.

2. A high current aluminum busbar connector according to claim 1, characterized in that: The copper sleeve is fixedly connected to the aluminum bar body by torque welding, and the centers of the threaded holes on the surfaces of the copper sleeve and the aluminum bar body are located on the same straight line.

3. A high current aluminum busbar connector according to claim 1, characterized in that: The shapes and sizes of the sealing body and the tail cover are the same as those of the aluminum bar body, and the sealing body and the tail cover are sleeved on the aluminum bar body in sequence.

4. A high current aluminum busbar connector according to claim 1, characterized in that: A threaded hole matched with the second screw is formed on the top surface of the aluminum bar body, and the diameter of the threaded hole is equal to the diameter of the second screw.

Images