Welding structure of profile liquid cooling plate and plug

Abstract

The utility model provides a welding structure of a profile liquid cooling plate and plugs, which belongs to the technical field of a module liquid cooling system in a battery box body and comprises a profile liquid cooling plate body and two plug bodies, the plug bodies are positioned at two ends of the profile liquid cooling plate body, contact surfaces of the plug bodies and the profile liquid cooling plate body are provided with TIG (Tungsten Inert Gas) welding connecting parts, and the TIG welding connecting parts are connected with the profile liquid cooling plate body. And the edge of the TIG welding connection part is provided with a chamfer C. According to the utility model, the chamfer C treatment is carried out on the plug and the TIG welding part of the liquid cooling plate, so that the efficient and reliable connection between the liquid cooling plate and the plug is achieved, the problem of low airtight qualification rate in the manufacturing process of the profile liquid cooling plate can be solved, the strength and the sealing property of the welding part are improved, and the production efficiency is improved. Meanwhile, defects generated in the welding process are reduced, the service life of a product is prolonged, the process difficulty is reduced, the production efficiency is improved, the applicability is wide, the structure is simple, the process requirement is not high, and certain market prospects are achieved.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of liquid cooling system for internal modules of battery box, specifically a welding structure of profile liquid cooling plate and plug. Background Technology

[0002] With the increasing popularity of new energy vehicles, the requirements for the liquid cooling system of the battery pack module, as the core component of new energy vehicles, are becoming more and more stringent. The current mainstream profile liquid cooling plate structure, as a high-efficiency heat dissipation liquid cooling component, is widely used in cooling systems. The liquid cooling plate is usually made of profile structure with a complex internal flow channel design for circulating cooling medium to achieve heat dissipation. The plug, as an important component of the liquid cooling plate, is mainly used to seal the end of the flow channel to prevent cooling medium leakage and ensure the sealing and stability of the system.

[0003] Currently, the connection between the liquid cooling plate and the plug in existing technologies mainly relies on welding technology. The profile liquid cooling plate and the plug are sealed by stir welding and TIG welding. In the process, the air leakage rate and sealing performance at the stir welding and TIG welding joints are high, and the risk of weld cracking is high, which may even lead to leakage or structural failure. In addition, traditional welding methods are prone to defects such as porosity, insufficient strength, stress concentration and cracks during the welding process, which affect the sealing and durability of the welded parts and reduce the service life and performance of the liquid cooling plate. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing solutions are too simplistic. Specifically, this utility model provides a welding structure for a profile liquid cooling plate and a plug, which solves the technical problems mentioned in the background section, such as insufficient connection strength, poor sealing, and low airtightness qualification rate of the liquid cooling plate during the manufacturing process when welding the contact surface of the liquid cooling plate and the plug.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A welding structure for a profile liquid cooling plate and plugs includes a profile liquid cooling plate body and two plug bodies. The plug bodies are located at both ends of the profile liquid cooling plate body and seal the openings at both ends of the profile liquid cooling plate body. A TIG welding connection is provided on the contact surface between the plug body and the profile liquid cooling plate body, and a chamfer is provided at the edge of the TIG welding connection.

[0007] Furthermore, the cutting depth of each chamfered C-angle is 0.5mm to 2mm.

[0008] Furthermore, the angle of each of the aforementioned chamfered C-angles is 45° to 60°.

[0009] Furthermore, the straight edge of the contact surface between the plug body and the profile liquid cooling plate body is provided with an FSW welding part.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention achieves a chamfered C-angle treatment of the TIG weld joint between the plug and the liquid cooling plate by setting a TIG welding connection part, a chamfered C-angle, and an FSW welding part. The chamfered C-angle design increases the welding area, improves welding strength and reliability, improves heat distribution at the weld, reduces stress concentration and welding defects, improves the sealing performance of the weld joint, effectively prevents leakage, and extends the service life of the liquid cooling plate. It can solve the problem of low airtightness qualification rate in the profile liquid cooling plate manufacturing process. It has wide applicability, simple structure, and low process requirements. It can significantly improve the structural strength and production efficiency of profile liquid cooling systems, and the leakage risk is extremely low. The airtightness qualification rate after welding the liquid cooling plate and the plug is better than the existing solution, which has important engineering application value and market prospects.

[0012] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is an exploded view of the overall structure of this utility model;

[0015] Figure 3 For the present utility model Figure 1 Enlarged diagram of area A.

[0016] In the diagram: 1. Profile liquid cooling plate body; 2. End cap body; 3. TIG welded connection; 4. Chamfered corner; 5. FSW welded part. Detailed Implementation

[0017] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] Please refer to the appendix carefully. Figure 1-3 A welding structure for a profile liquid cooling plate and plugs includes a profile liquid cooling plate body 1 and two plug bodies 2. The plug bodies 2 are located at both ends of the profile liquid cooling plate body 1 and seal the openings at both ends of the profile liquid cooling plate body 1. A TIG welding connection part 3 is provided on the contact surface between the plug body 2 and the profile liquid cooling plate body 1. A chamfered C-angle 4 is provided at the edge of the TIG welding connection part 3.

[0021] Through the above structure, the TIG welding connection 3 between the plug body 2 and the profile liquid cooling plate body 1 is chamfered at the C-angle 4, achieving an efficient and reliable connection between the liquid cooling plate and the plug. This solves the problem of low airtightness qualification rate in the profile liquid cooling plate manufacturing process, improves the strength and sealing of the welded parts, reduces defects generated during the welding process, extends the service life of the product, reduces process difficulty, and improves production efficiency. It is also widely applicable, simple in structure, and has low process requirements. It can significantly improve the structural strength and production efficiency of the profile liquid cooling system, and the leakage risk is extremely low. The airtightness qualification rate after welding the liquid cooling plate and the plug is better than the existing solution, which has important engineering application value and market prospects.

[0022] The specific operation is as follows: First, the surface of the welding area between the profile liquid cooling plate body 1 and the plug body 2 is cleaned to remove the oxide layer and impurities. Then, a chamfered C-angle 4 is processed at the edge of the contact surface between the plug body 2 and the profile liquid cooling plate body 1. The straight edge of the plug body 2 and the profile liquid cooling plate body 1 is FSW welded using FSW welding. Finally, the chamfered C-angle 4 is welded using the TIG welding method. The welding current, voltage and speed are controlled to ensure that the weld is uniform and free of defects. After the welding is completed, the weld is cleaned and inspected to ensure that the welding quality meets the requirements.

[0023] Please refer to the appendix carefully. Figure 2 and attached Figure 3 The cutting depth of each chamfered C-angle 4 is 0.5mm to 2mm, and the angle of each chamfered C-angle 4 is 45° to 60°. The design of the chamfered C-angle 4 increases the welding area, improves the welding strength and reliability, improves the heat distribution at the weld, reduces stress concentration and welding defects, improves the sealing of the weld joint, and effectively prevents leakage. The straight edge of the contact surface between the plug body 2 and the profile liquid cooling plate body 1 is provided with an FSW welding part 5. FSW welding does not require the addition of welding wire or shielding gas, which can reduce welding costs.

[0024] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A welded structure of a profile liquid cooling plate and plugs, comprising a profile liquid cooling plate body (1) and two plug bodies (2), wherein the plug bodies (2) are located at both ends of the profile liquid cooling plate body (1) and seal the openings at both ends of the profile liquid cooling plate body (1), characterized in that, The contact surface between the plug body (2) and the profile liquid cooling plate body (1) is provided with a TIG welding connection part (3), and the edge of the TIG welding connection part (3) is provided with a chamfer (4).

2. The welding structure of the profile liquid cooling plate and the plug according to claim 1, characterized in that, The cutting depth of each of the chamfered C-angles (4) is 0.5 mm to 2 mm.

3. The welding structure of the profile liquid cooling plate and the plug according to claim 2, characterized in that, The angle of each of the inverted C-angles (4) is 45° to 60°.

4. The welding structure of the profile liquid cooling plate and the plug according to claim 1, characterized in that, The straight edge of the contact surface between the plug body (2) and the profile liquid cooling plate body (1) is provided with an FSW welding part (5).

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