New energy battery cooling plate solder welding structure

Abstract

The utility model relates to the technical field of new energy automobile battery cooling plate welding, and provides a new energy battery cooling plate welding flux welding structure which is characterized in that an annular welding piece is arranged, a harmonica-shaped tube cooling plate is inserted into the welding piece, and then the welding piece is inserted into a current collector, so that the harmonica-shaped tube and the current collector are assembled; and then welding is carried out by carrying out high-frequency coil heating on the soldering lug, so that the harmonica-shaped tube and the current collector are stably welded together. The two ends of the soldering lug are provided with the cutting openings, and the two punching openings are formed between the two ends of the lower flanging and the two ends of the soldering lug, so that the two communicated openings form a fault-tolerant structure, the fault tolerance of an assembly gap is high, the structure is equivalent to a spring, excessive assembly is avoided when a rigid body is handled, and the structure is convenient to form. The soldering lug is provided with the upper turnup for guiding and inserting the harmonica-shaped tube cooling plate, so that the assembly is convenient and smooth, the upper turnup and the harmonica-shaped tube cooling plate are filled with welding flux for welding, the flowing direction of the welding flux is guided after the welding flux is molten, and the proportion of sand holes in the welding position of the cooling plate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of welding technology for cooling plates of new energy vehicle batteries, and in particular to a welding structure for welding cooling plates of new energy vehicles. Background Technology

[0002] High-frequency welding is typically used for cooling plates of new energy batteries, which involves welding aluminum parts by melting flux-cored wire at high temperatures. Flux-cored wire improves the fluidity of molten slag, reduces slag spatter, and enhances arc stability, thereby optimizing the welding process. On the other hand, it can improve the high-temperature oxidation resistance and corrosion resistance of the molten metal, giving the weld excellent resistance to hot cracking and low-temperature toughness.

[0003] However, flux-cored welding wire has poor uniformity during melting and requires high temperature field consistency during welding. Using annular welding discs instead of flux-cored welding wires is problematic because the discs are difficult to form and have low tolerance for assembly gaps. Therefore, a type of welding disc with high assembly tolerance and easy forming is needed. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a welding structure for a cooling plate of a new energy battery, which solves the problems that have occurred in the background art.

[0005] Based on the above objectives, this utility model provides a welding structure for a new energy battery cooling plate, including a harmonica tube cooling plate and a current collector. The harmonica tube cooling plate and the current collector are welded together by a welding sheet. The welding sheet is annular with arc-shaped ends on both sides. Vertical cuts are provided at both ends of the welding sheet. An annular downward flange is provided at the bottom of the welding sheet. The left and right ends of the downward flange form two punching cuts with the left and right ends of the welding sheet, respectively. The cuts on the same side are connected to the punching cuts. The harmonica tube cooling plate is inserted into the welding sheet, and the welding sheet is inserted into the current collector. The harmonica tube cooling plate, the welding sheet, and the current collector are connected together.

[0006] Preferably, the top of the welding sheet is bent outward to form an upward-curved edge.

[0007] Preferably, the cut extends to the upper flange.

[0008] Preferably, a supporting and limiting boss is distributed in the middle of the lower flange, and the supporting and limiting boss is located on the inner side of the bottom end of the welding sheet.

[0009] Preferably, the harmonica tube cooling plate and the welding sheet are fitted with a clearance fit, and an assembly groove is opened at the top of the current collector, into which the welding sheet is inserted, and the welding sheet and the assembly groove are fitted with a clearance fit.

[0010] Preferably, the welding sheet is made of 4047 aluminum sheet.

[0011] The beneficial effects of this utility model are as follows: This utility model uses an annular welding piece to insert the harmonica tube cooling plate into the welding piece, which is then inserted into the current collector. This achieves the assembly of the harmonica tube and the current collector. The welding piece is then welded together using a high-frequency coil for heating, ensuring a stable bond between the harmonica tube and the current collector. The welding piece has cutouts at both ends, and two punched cutouts are formed between the two ends of the lower flange and the two ends of the welding piece. This creates two interconnected openings, forming a fault-tolerant structure with high tolerance for assembly gaps, acting like a spring to prevent over-assembly when dealing with rigid bodies. This structure is also easy to form. The welding piece has an upper flange for guiding the insertion of the harmonica tube cooling plate, making assembly convenient and smooth. Solder is filled into the upper flange and the harmonica tube cooling plate for welding. The melted solder has a guided flow direction, reducing the proportion of pinholes at the welding position of the cooling plate. This invention features a supporting and limiting boss in the middle of the lower flange, which is fixed to the bottom of the welding piece. The lower flange and the supporting and limiting boss together limit the insertion of the harmonica tube cooling plate, ensuring a stable assembly between the welding piece and the harmonica tube cooling plate. The welding piece is then assembled with the assembly groove of the current collector, achieving a tight fit. After assembly, a high-frequency coil heats and melts the welding piece and solder, welding the harmonica tube cooling plate and the current collector together. This increases the welding rate, improves the orderly flow of solder during welding, reduces the requirement for consistent temperature field, allows for instantaneous melting of the solder, and reduces the time required for molten solder to flow. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0014] Figure 2 This is a schematic diagram of the end of the welding piece of this utility model;

[0015] Figure 3 This is a schematic diagram of the bottom of the welding sheet of this utility model.

[0016] The diagram is marked as follows:

[0017] 1-Harmonica tube cooling plate, 2-Current collector, 3-Welding piece, 4-Cutting opening, 5-Lower flange, 6-Punching opening, 7-Upper flange, 8-Supporting and limiting boss, 9-Assembly slot. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0019] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] like Figures 1 to 3 As shown, a welding structure for a new energy battery cooling plate includes a harmonica tube cooling plate 1 and a current collector 2. The harmonica tube cooling plate 1 and the current collector 2 are welded together by a welding piece 3. The welding piece 3 is annular with arc-shaped ends. Vertical cutouts 4 are provided at both ends of the welding piece 3. An annular downward flange 5 is provided at the bottom of the welding piece 3. The left and right ends of the downward flange 5 form two punching openings 6 between the left and right ends of the welding piece 3, respectively. The cutouts 4 and punching openings 6 on the same side are connected. The harmonica tube cooling plate 1 is inserted into the welding piece 3, and the welding piece 3 is inserted into the current collector 2, thus connecting the harmonica tube cooling plate 1, the welding piece 3, and the current collector 2 together. By setting the annular welding piece 3, the harmonica tube cooling plate 1 is inserted into the welding piece 3, and the welding piece 3 is then inserted into the current collector 2, thus assembling the harmonica tube 1 and the current collector 2. Then, the welding piece 3 is heated by a high-frequency coil for welding, so that the harmonica tube 1 and the current collector 2 are stably welded together. Cutting openings 4 are provided at both ends of the welding piece 3, and two punching openings 6 are formed between the two ends of the lower flange 5 and the two ends of the welding piece 3. In this way, there are two connected openings, forming a fault-tolerant structure with high tolerance for assembly gaps. It is equivalent to a spring, which can prevent over-assembly when dealing with rigid bodies, and this structure is easy to form.

[0021] The top of the welding piece 3 is bent outward to form an upper flange 7, and the cutting opening 4 extends to the upper flange 7. The upper flange 7 is used to guide the insertion of the harmonica tube cooling plate 1, which makes the assembly convenient and smooth. Solder is filled into the upper flange 7 and the harmonica tube cooling plate 1 for welding. In this way, the flow direction of the melted solder is guided, reducing the proportion of pinholes at the welding position of the cooling plate.

[0022] The lower flange 5 has a supporting and limiting boss 8 distributed in the middle, which is located on the inner side of the bottom end of the welding piece 3. The harmonica tube cooling plate 1 is clearance-fitted with the welding piece 3. The top of the current collector 2 has an assembly groove 9, and the welding piece 3 is inserted into the assembly groove 9 with clearance fit. The welding piece 3 is made of 4047 aluminum sheet. The lower flange 5 is provided with a supporting and limiting boss 8 in the middle and is fixed to the bottom of the welding piece 3. In this way, the lower flange 5 and the supporting and limiting boss 8 are used together to limit the insertion of the harmonica tube cooling plate 1. The welding piece 3 is stably assembled with the harmonica tube cooling plate 1. The welding piece 3 is then assembled with the assembly groove 9 of the current collector 2, which can achieve a tight assembly. After assembly, the welding piece and the solder are heated and melted by a high-frequency coil, so that the harmonica tube cooling plate 1 and the current collector 2 are welded together. This increases the welding rate, makes the solder flow orderly during the welding process, reduces the requirement for the consistency of the temperature field of the solder, and allows the solder to melt instantly, reducing the time required for the flow of molten solder.

[0023] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this utility model is limited to these examples; within the framework of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above, which are not provided in the details for the sake of brevity. Any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A welding structure for a cooling plate of a new energy battery, comprising a harmonica tube cooling plate (1) and a current collector (2), characterized in that, The harmonica tube cooling plate (1) and the current collector (2) are welded together by a welding piece (3); the welding piece (3) is annular and the left and right ends are arc-shaped. Vertical cutting openings (4) are provided at both ends of the welding piece (3). An annular down-turned edge (5) is provided at the bottom end of the welding piece (3). The left and right ends of the down-turned edge (5) form two punching openings (6) between the left and right ends of the welding piece (3) respectively. The cutting opening (4) on the same side is connected to the punching opening (6). The harmonica tube cooling plate (1) is inserted into the welding piece (3), and the welding piece (3) is inserted into the current collector (2). The harmonica tube cooling plate (1), the welding piece (3) and the current collector (2) are connected together.

2. According to claim 1, the welding structure of the new energy battery cooling plate is provided, wherein the top of the welding sheet (3) is bent outward to form an upward flange (7).

3. According to claim 2, the cutting opening (4) extends to the upper flange (7).

4. According to claim 1, a new energy battery cooling plate welding structure is provided with a support limiting boss (8) in the middle of the lower flange (5), and the support limiting boss (8) is located on the inner side of the bottom end of the welding sheet (3).

5. According to claim 1, the harmonica tube cooling plate (1) and the welding piece (3) are fitted with a clearance, the top of the current collector (2) is provided with an assembly groove (9), the welding piece (3) is inserted into the assembly groove (9), and the welding piece (3) and the assembly groove (9) are fitted with a clearance.

6. The welding structure of the new energy battery cooling plate according to claim 1, wherein the welding sheet (3) is a 4047 aluminum sheet.

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