Auxiliary tool for welding water inlet and outlet pipes of battery liquid cooling plate
By using a grid-shaped frame and support plate structure, the problems of inaccurate positioning and poor stability of the inlet and outlet water pipe joints of the liquid cooling plate are solved, achieving rapid and accurate positioning and efficient welding, which is suitable for the production line of liquid cooling plates for new energy vehicle batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUIZHOU KAIHONG HUIDA COOLING SYST CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-04-24
AI Technical Summary
In the existing technology, the positioning accuracy and stability of the inlet and outlet water pipe joints of the liquid cooling plate and the liquid cooling plate body are low, which makes it easy for deviations and leaks to occur during the welding process, resulting in low processing efficiency.
The system employs a grid-shaped frame structure, combined with support plates, mounting slots, and locking screws, to achieve rapid and precise positioning and stable clamping of the liquid cooling plate. The inlet and outlet water pipe joints are precisely placed through support columns and grooves, and the verticality and stability are ensured by the cooperation of locking screws and mounting slots.
It enables rapid and accurate positioning and efficient clamping of the inlet and outlet water pipe joints of the liquid cooling plate, improving the stability and processing efficiency of the welding process, and is suitable for the production line of liquid cooling plates for new energy vehicle batteries.
Smart Images

Figure CN224157961U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery liquid cooling plate processing technology, specifically to an auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate. Background Technology
[0002] Liquid cooling plates are a core component of the thermal management system for new energy vehicle batteries. With the increasing demand for higher liquid cooling efficiency, more and more companies are placing liquid cooling plates on the sides of the battery. Placing the liquid cooling plate in the middle of the battery significantly increases the heat exchange area, allowing for large-area cooling and halving the battery temperature control time. For the processing of these new liquid cooling plates, the inlet and outlet water pipe joints need to be precisely welded to the liquid cooling plate body. In traditional welding processes, the liquid cooling plate and the inlet and outlet water pipe joints require manual positioning and fixing, which presents the following problems: 1. Low positioning accuracy: Manual operation cannot guarantee the perpendicularity of the inlet and outlet water pipe joints to the liquid cooling plate body, easily leading to misalignment and leakage after welding; 2. Poor stability: The liquid cooling plate is prone to displacement during welding, requiring repeated adjustments, resulting in low processing efficiency. Utility Model Content
[0003] To address the aforementioned shortcomings, this utility model aims to provide an auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate. This utility model utilizes a grid-shaped frame and multiple mounting slots on the frame to achieve rapid positioning of the liquid cooling plate, secure the liquid cooling plate with locking screws, and precisely place the inlet and outlet water pipe joints in the grooves of the support columns. This gives the utility model advantages such as precise positioning, efficient clamping, and strong stability.
[0004] To achieve the above technical objectives, the following technical solutions were adopted:
[0005] A welding auxiliary fixture for the inlet and outlet water pipes of a battery liquid cooling plate comprises a grid-shaped frame formed by welding a pair of longitudinally spaced first support plates and a pair of transversely spaced second support plates perpendicularly to each other. The first support plate has a mounting groove at its front end for inserting a liquid cooling connecting plate. A locking nut is located on the front side of the mounting groove and is welded to the outer side of the front end of the first support plate, with a locking screw on it. A square base plate is located at the bottom inner side of the front end of the first support plate, and a support column is vertically positioned at the front end of the base plate. The top of the support column has a groove for placing the inlet and outlet water pipe connectors. Multiple mounting grooves are spaced apart on the second support plate for inserting liquid cooling side plates.
[0006] Furthermore, the number of mounting slots is five, with two located at the two ends of the second support plate and the remaining three spaced apart in the middle area of the second support plate.
[0007] Furthermore, the first mounting groove and the second mounting groove have the same depth, and the width of the first mounting groove is greater than the width of the second mounting groove.
[0008] Furthermore, the first support plate and the second support plate are respectively provided with a plurality of spaced relief holes.
[0009] Furthermore, the locking nut is installed on the front side of the middle section of the mounting groove.
[0010] Furthermore, the sides of the base plate are respectively welded to the first support plate and the second support plate at the front end, and a trapezoidal reinforcing plate is vertically provided at the rear end of the base plate. The rear side of the trapezoidal reinforcing plate is welded to the second support plate at the front end, and the bottom is welded to the base plate.
[0011] Furthermore, triangular reinforcing plates are provided at the four corners of the grid frame formed by the first and second support plates.
[0012] Furthermore, the thickness of both the triangular reinforcing plate and the trapezoidal reinforcing plate is 1.1 to 1.5 times the thickness of the first support plate.
[0013] Furthermore, the end of the locking screw is provided with a polyurethane pressure block to avoid damaging the surface of the liquid cooling plate.
[0014] The beneficial effects achieved by this utility model are:
[0015] Compared with existing technologies, this utility model provides an auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate. This utility model uses a grid-shaped frame formed by two perpendicular support plates, combined with triangular and trapezoidal reinforcing plates, to enhance the stability and resistance to deformation of the tooling. The first and second support plates are respectively provided with mounting grooves one and two, which, in conjunction with the support column grooves, enable rapid and precise positioning of the liquid cooling plate body and the inlet and outlet water pipe joints. The support columns are vertically mounted on the base plate to ensure the perpendicularity of the liquid cooling plate body and the inlet and outlet water pipe joints during welding. Simultaneously, the locking screws, in conjunction with mounting groove one, allow operators to clamp the liquid cooling plate with one hand, shortening clamping time. The lightweight holes on the support plates reduce the overall weight of the tooling, facilitating handling and operation by the operator. Therefore, this utility model has advantages such as precise positioning, efficient clamping, and strong stability, and is suitable for welding production lines of new energy vehicle battery liquid cooling plates. Attached Figure Description
[0016] The present invention will now be described in conjunction with the accompanying drawings.
[0017] Appendix Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Appendix Figure 2 This is a top view of the utility model.
[0019] Appendix Figure 3 This is a schematic diagram of the structure of the utility model and the liquid cooling plate.
[0020] Appendix Figure 4 This is a schematic diagram of the assembly of this utility model with a liquid cooling plate.
[0021] In the diagram: 1-Liquid-cooled side plate; 2-Liquid-cooled connecting plate; 3-Inlet / outlet water pipe connector; 4-First support plate; 41-Mounting groove one; 5-Second support plate; 51-Mounting groove two; 6-Locking nut; 7-Locking screw; 8-Triangular reinforcing plate; 9-Support column; 91-Groove; 10-Base plate; 11-Trapezoidal reinforcing plate; 12-Lightening hole. Detailed Implementation
[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] like Figure 1-3 As shown, the present invention provides a welding auxiliary tooling for the inlet and outlet water pipes of a battery liquid cooling plate, comprising a first support plate 4, a second support plate 5, a locking nut 6, a locking screw 7, a triangular reinforcing plate 8, a support column 9, a base plate 10, and a trapezoidal reinforcing plate 11.
[0024] The auxiliary tooling for welding the inlet and outlet water pipes of the battery liquid cooling plate consists of a pair of longitudinally spaced first support plates 4 and a pair of transversely spaced second support plates 5 welded perpendicularly to each other to form a grid-shaped frame. Triangular reinforcing plates 8 are provided at the four corners of the frame to enhance the frame's resistance to deformation. Multiple spaced relief holes 12 are provided on the first support plates 4 and the second support plates 5 to reduce the overall weight of the tooling.
[0025] The first support plate 4 has a mounting groove 41 at its front end for inserting the liquid cooling connection plate 2. A locking nut 6 is provided at the front side of the middle section of the mounting groove 41. The locking nut 6 is welded to the outer side of the front end of the first support plate 4 and has a locking screw 7 on it. The end of the locking screw 7 has a polyurethane pressure block to prevent damage to the surface of the liquid cooling plate. A square base plate 10 is provided at the bottom of the inner side of the front end of the first support plate 4. The sides of the base plate 10 are welded to the front end of the first support plate 4 and the second support plate 5, respectively. A support column 9 is vertically provided at the front end of the base plate 10. The top of the support column 9 has a groove 91 for placing the inlet and outlet water pipe connectors 3. A trapezoidal reinforcing plate 11 is vertically provided at the rear end of the base plate 10. The rear side of the trapezoidal reinforcing plate 11 is welded to the front end of the second support plate 5, and the bottom is welded to the base plate 10.
[0026] The second support plate 5 is provided with five mounting slots 51 at intervals for the liquid cooling side plate 1 to be inserted; two of them are located at the two ends of the second support plate 5 respectively, and the remaining three are located at intervals in the middle area of the second support plate 5.
[0027] The mounting groove 41 and the mounting groove 51 have the same depth, and the width of the mounting groove 41 is greater than the width of the mounting groove 51, which is used to adjust the position of the liquid cooling plate. The first support plate 4 and the second support plate 5 have the same thickness, and the thickness of the triangular reinforcing plate 8 and the trapezoidal reinforcing plate 11 is 1.1 to 1.5 times the thickness of the first support plate 4.
[0028] Its working principle is as follows: Figure 4 As shown, during use, insert the liquid cooling connecting plate 2 of the liquid cooling plate body into the first mounting groove 41, insert the liquid cooling side plate 1 into the second mounting groove 51, place the inlet and outlet water pipe connectors 3 into the grooves 91 on the corresponding support columns 9, move the liquid cooling plate back and forth to adjust its position, screw in the locking screw 7, and apply pressure to the liquid cooling connecting plate 2 inserted into the first mounting groove 41 to prevent displacement during welding. After welding is completed, loosen the locking screw 7 to remove the welded liquid cooling plate.
[0029] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.
[0030] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0031] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.
Claims
1. A welding auxiliary tooling for the inlet and outlet water pipes of a battery liquid cooling plate, characterized in that: A grid-shaped frame is formed by welding a pair of longitudinally spaced first support plates (4) and a pair of transversely spaced second support plates (5) perpendicularly to each other; the first support plate (4) has a mounting groove (41) at its front end, which is for the liquid cooling connecting plate (2) to be inserted; a locking nut (6) is provided on the front side of the mounting groove (41), which is welded to the outer side of the front end of the first support plate (4), and a locking screw (7) is provided on it; a square base plate (10) is provided at the bottom of the inner side of the front end of the first support plate (4), and a support column (9) is provided vertically at the front end of the base plate (10), and a groove (91) is provided at the top of the support column (9) for placing the inlet and outlet water pipe joints (3); a plurality of mounting grooves (51) are provided on the second support plate (5), which are for the liquid cooling side plate (1) to be inserted.
2. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 1, characterized in that: The number of mounting slots (51) is five, two of which are located at the two ends of the second support plate (5), and the remaining three are spaced apart in the middle area of the second support plate (5).
3. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 2, characterized in that: The installation slot 1 (41) and installation slot 2 (51) have the same depth, and the width of installation slot 1 (41) is greater than the width of installation slot 2 (51).
4. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 3, characterized in that: The first support plate (4) and the second support plate (5) are respectively provided with a plurality of spaced relief holes (12).
5. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 4, characterized in that: The locking nut (6) is installed on the front side of the middle section of the mounting groove (41).
6. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 1, characterized in that: The sides of the base plate (10) are respectively welded to the first support plate (4) and the second support plate (5) at the front end. A trapezoidal reinforcing plate (11) is vertically provided at the rear end of the base plate (10). The rear side of the trapezoidal reinforcing plate (11) is welded to the second support plate (5) at the front end, and the bottom is welded to the base plate (10).
7. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 6, characterized in that: Triangular reinforcing plates (8) are provided at the four corners of the grid frame formed by the first support plate (4) and the second support plate (5).
8. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to claim 7, characterized in that: The thickness of the triangular reinforcing plate (8) and the trapezoidal reinforcing plate (11) is 1.1 to 1.5 times the thickness of the first support plate (4).
9. The auxiliary tooling for welding the inlet and outlet water pipes of a battery liquid cooling plate according to any one of claims 1-8, characterized in that: The locking screw (7) has a polyurethane pressure block at its end to avoid damaging the surface of the liquid cooling plate.