Brazing tool for liquid cooling plate of battery

Abstract

The utility model discloses a battery liquid cooling plate brazing tool which comprises a pair of first supporting plates which are longitudinally arranged at intervals and a pair of second supporting plates which are transversely arranged at intervals, and the first supporting plates and the second supporting plates are perpendicular to each other to form a frame shaped like a Chinese character'jing '. The two ends of the first supporting plate are respectively provided with a first installation groove, and the first installation grooves are used for allowing liquid cooling connecting plates to be inserted therein. Mounting grooves II are formed in the two end parts and the middle area of the second supporting plate at intervals, and the liquid cooling side plates are inserted into the mounting grooves II; a locking nut is welded to the outer side face of the front end of the first supporting plate and located on the front side of the middle position of the first mounting groove in the front end of the first supporting plate, and a locking screw is arranged on the locking nut. Through the arrangement of the #-shaped frame and the plurality of mounting grooves, the problems of brazing dislocation and deformation are solved, the assembly precision and the production efficiency are improved, and the tool is suitable for batch manufacturing of liquid cooling plates of batteries of new energy automobiles.

Description

A battery liquid cooling plate brazing fixture Technical Field

[0001] This utility model relates to the field of liquid cooling plate processing technology, specifically to a brazing fixture for battery liquid cooling plates. Background Technology

[0002] Currently, the mainstream solution for liquid cooling of automotive batteries is to place the liquid cooling plate at the bottom of the battery. The drawbacks of bottom cooling are: the battery itself has high thermal resistance, resulting in a slow response to liquid cooling; and the small area at the bottom of the battery limits the heat exchange area with the liquid cooling plate. However, with the increasing demand for faster battery liquid cooling, more and more companies are placing the liquid cooling plate on the side of the battery. Placing the liquid cooling plate in the middle of the battery increases the heat exchange area many times over, and large-area cooling of the battery reduces the battery temperature control time by half. Welding is a crucial process in liquid cooling plate manufacturing. Currently, new side liquid cooling plates typically use brazing, but this process is prone to problems such as insufficient precise positioning when the liquid cooling side plate and connecting plate overlap, leading to uneven filler metal filling and misalignment; thin-walled liquid cooling side plates are prone to deformation and warping during high-temperature brazing; and traditional tooling requires multiple adjustments to the locking position, increasing assembly time and reducing efficiency. Summary of the Invention

[0003] To address the aforementioned shortcomings, this invention aims to provide a brazing fixture for battery liquid cooling plates. Based on a novel battery liquid cooling plate structure design, this invention integrates multiple horizontal and vertical mounting slots into a single supporting frame, solving the problems of misalignment, deformation, and low assembly efficiency during the brazing process of the liquid cooling plate.

[0004] To achieve the above technical objectives, the following technical solutions were adopted:

[0005] A battery liquid cooling plate brazing fixture includes a pair of longitudinally spaced first support plates and a pair of transversely spaced second support plates, the first and second support plates being perpendicular to each other to form a "well" shaped frame; each of the two ends of the first support plate is provided with a mounting groove 1 for inserting a liquid cooling connecting plate; multiple mounting grooves 2 are provided at intervals at both ends and the middle area of ​​the second support plates for inserting liquid cooling side plates; a locking nut is welded to the outer side of the front end of the first support plate, the locking nut being located on the front side of the middle section of the mounting groove 1 at the front end of the first support plate, and a locking screw is provided thereon.

[0006] Furthermore, a total of five mounting slots are provided on the second support plate, two of which are located at the two ends of the second support plate, and the remaining three are distributed at intervals in the middle area of ​​the second support plate.

[0007] Furthermore, the depth of the first mounting groove on the first support plate and the depth of the second mounting groove on the second support plate are the same.

[0008] Furthermore, the width of the first mounting slot is greater than the width of the second mounting slot.

[0009] Furthermore, a lightening groove is provided at the interval between adjacent mounting grooves on the second support plate.

[0010] Furthermore, the depth of the relief groove is consistent with the depth of the second mounting groove.

[0011] Furthermore, a waist-shaped hole for weight reduction is provided in the middle region of the first support plate.

[0012] Furthermore, at the four corners of the frame formed by the first and second support plates perpendicular to each other, triangular reinforcing plates with a 45° bevel are welded, and the thickness of the triangular reinforcing plates is 1.1 to 1.5 times the thickness of the support plates.

[0013] Furthermore, the first support plate and the second support plate have the same thickness and are fixed together by welding.

[0014] The beneficial effects achieved by this utility model are:

[0015] Compared with existing technologies, this utility model provides a brazing fixture for battery liquid cooling plates. A grid-shaped frame is formed by vertically welding a pair of longitudinally spaced first support plates and a pair of transversely spaced second support plates. Multiple mounting slots are provided on the first and second support plates, allowing the liquid cooling plate to be inserted entirely into the corresponding slots. Locking screws are also provided; tightening the screws achieves precise positioning of the overlap between the liquid cooling side plate and the connecting plate, improving assembly efficiency. A lightweight design is adopted, with oblong holes on the first support plate and weight-reducing grooves on the second support plate, reducing the fixture's weight by 30%, making it easier and less strenuous for workers to handle. Triangular reinforcing plates enhance the frame's bending stiffness, reducing deformation during brazing. Therefore, this utility model integrates positioning and locking functions, offering advantages such as preventing workpiece deformation, precise positioning, improved assembly efficiency, and enhanced process stability. Attached Figure Description

[0016] The present invention will now be described in conjunction with the accompanying drawings.

[0017] Figure 1 is a schematic diagram of a battery liquid cooling plate brazing fixture according to the present invention.

[0018] Figure 2 is a top view of a battery liquid cooling plate brazing fixture according to this utility model.

[0019] Figure 3 is a schematic diagram of the brazing fixture and liquid cooling plate structure of a battery liquid cooling plate according to this utility model.

[0020] Figure 4 is a schematic diagram of the assembly of a battery liquid cooling plate brazing fixture and a liquid cooling plate according to this utility model.

[0021] In the diagram: 1-Liquid-cooled side plate; 2-Liquid-cooled connecting plate; 3-First support plate; 31-Mounting groove one; 32-Oval hole; 4-Second support plate; 41-Mounting groove two; 42-Lightening groove; 5-Locking nut; 6-Locking screw; 7-Triangular reinforcing plate. 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] As shown in Figures 1-3, the present invention provides a battery liquid cooling plate brazing fixture, which includes a pair of first support plates 3 arranged longitudinally at intervals, a pair of second support plates 4 arranged laterally at intervals, a triangular reinforcing plate 7, a locking nut 5, and a locking screw 6.

[0024] The aforementioned battery liquid cooling plate brazing fixture consists of a pair of longitudinally spaced first support plates 3 and a pair of transversely spaced second support plates 4 welded perpendicularly to each other to form a grid-shaped frame. Triangular reinforcing plates 7 with a 45° bevel are welded at the four corners of the frame. The thickness of the triangular reinforcing plates 7 is 1.1 to 1.5 times the thickness of the support plates to prevent deformation of the frame.

[0025] The first support plate 3 has mounting grooves 31 at both ends for inserting liquid cooling connecting plate 2; a locking nut 5 is welded on the outer side of the front end of the first support plate 3, the locking nut 5 is located on the front side of the middle position of the mounting groove 31 at the front end of the first support plate 3, and a locking screw 6 is provided on it; a waist-shaped hole 32 for lightening is provided in the middle area of ​​the first support plate 3.

[0026] The second support plate 4 has five mounting slots 41 spaced apart at both ends and in the middle area. The mounting slots 41 are used for inserting the liquid cooling side plate 1. Two mounting slots 41 are located at both ends of the second support plate 4, and the remaining three mounting slots 41 are spaced apart in the middle area of ​​the second support plate 4. A lightening groove 42 is provided at the interval between adjacent mounting slots 41. The depth of the lightening groove 42 is the same as the depth of the mounting slot 41.

[0027] The depth of the first mounting groove 31 on the first support plate 3 is the same as the depth of the second mounting groove 41 on the second support plate 4, and the width of the first mounting groove 31 is greater than the width of the second mounting groove 41, which is used to adjust the position of the liquid cooling plate on the tooling.

[0028] The first support plate 3 and the second support plate 4 have the same thickness and are fixed together by welding.

[0029] The assembly steps are as follows: As shown in Figure 4, during use, insert a liquid-cooled connecting plate 2 into the mounting slot 31 located at the rear end of the first support plate 3. Then, insert multiple liquid-cooled side plates 1 into the five mounting slots 41 located on the second support plate 4. Finally, insert another liquid-cooled connecting plate 2 into the mounting slot 31 located at the front end of the first support plate 3. Adjust the position of the rear liquid-cooled connecting plate 2 to ensure that each liquid-cooled side plate 1 is in contact with the rear liquid-cooled connecting plate 2. After adjustment, screw in the locking screw 6 until the end of the locking screw 6 presses against the surface of the front liquid-cooled connecting plate 2 to ensure that the front liquid-cooled connecting plate 2 is in contact with each liquid-cooled side plate 1. After assembly, it can be sent into the brazing furnace. After brazing is completed, loosen the locking screw 6 to remove the welded liquid-cooled plate.

[0030] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0031] 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.

[0032] 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 brazing fixture for a battery liquid cooling plate, characterized in that: It includes a pair of longitudinally spaced first support plates (3) and a pair of transversely spaced second support plates (4), the first support plates (3) and the second support plates (4) are perpendicular to each other to form a "well" shaped frame; the first support plate (3) is provided with a first mounting groove (31) at both ends, the first mounting groove (31) is for the liquid cooling connecting plate (2) to be inserted; the second support plate (4) is provided with a plurality of second mounting grooves (41) at intervals at both ends and the middle area, the second mounting grooves (41) are for the liquid cooling side plate (1) to be inserted; a locking nut (5) is welded on the outer side of the front end of the first support plate (3), the locking nut (5) is located on the front side of the middle section of the first mounting groove (31) at the front end of the first support plate (3), and a locking screw (6) is provided on it.

2. The battery liquid cooling plate brazing fixture according to claim 1, characterized in that: Five mounting slots (41) are provided on the second support plate (4), two of which are located at the two ends of the second support plate (4) respectively, and the remaining three are distributed at intervals in the middle area of ​​the second support plate (4).

3. The battery liquid cooling plate brazing fixture according to claim 2, characterized in that: The depth of the first mounting groove (31) on the first support plate (3) is the same as the depth of the second mounting groove (41) on the second support plate (4).

4. The battery liquid cold plate brazing tooling of claim 3, wherein: The width of the first mounting slot (31) is greater than the width of the second mounting slot (41).

5. The battery liquid cooling plate brazing fixture according to claim 4, characterized in that: A lightening groove (42) is provided at the interval between adjacent mounting grooves (41) on the second support plate (4).

6. The battery liquid cooling plate brazing fixture according to claim 5, characterized in that: The depth of the lightening groove (42) is the same as the depth of the second mounting groove (41).

7. The battery liquid cold plate brazing tooling of claim 1, wherein: A waist-shaped hole (32) for light reduction is provided in the middle area of ​​the first support plate (3).

8. The battery liquid cooling plate brazing fixture according to claim 1, characterized in that: The first support plate (3) and the second support plate (4) are perpendicular to each other. At the four corners of the frame, triangular reinforcing plates (7) with a 45° angle are welded. The thickness of the triangular reinforcing plates (7) is 1.1 to 1.5 times the thickness of the support plates.

9. The battery liquid cold plate brazing tooling of claim 1, wherein: The first support plate (3) and the second support plate (4) have the same thickness and are fixed together by welding.

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