New energy battery water cooling plate

Abstract

The utility model discloses a new energy battery water cooling plate, which comprises a first layer plate and a second layer plate, the first layer plate is provided with a waterway groove, the waterway groove is provided with a plurality of groups of direct current section grooves which are arranged in parallel, the end parts of the adjacent direct current section grooves are connected through arc-shaped grooves, the second layer plate covers the first layer plate, and the second layer plate covers the second layer plate. An annular welding seam and a plurality of spot welding seams are formed between the first layer plate and the second layer plate in a welding mode, the waterway groove is located in an inner ring formed by the annular welding seam, and the spot welding seams are located in gaps between the adjacent straight flow sections. According to the utility model, the annular welding seam is arranged on the outer side of the waterway groove, and the annular welding seam enables the first laminate and the second laminate to form annular sealing at the annular welding seam, so that water in the waterway groove cannot flow out to the outer side of the plate layer from the space between the first laminate and the second laminate; the cost is low, the surface is not treated, the corrosion resistance is good, the environment is protected and the production efficiency is high; seam welding has good sealing performance and corrosion resistance.

Description

Technical Field

[0001] This utility model relates to the field of water-cooled plate processing technology, specifically to a water-cooled plate for new energy batteries. Background Technology

[0002] With the gradual development of new energy vehicles, new energy batteries are a crucial component. Battery trays serve as load-bearing and protective parts for power batteries, with water-cooled plates playing a vital cooling role within them. In existing technologies, water-cooled plates are welded together from a first layer and a second layer. The first layer has water channel grooves formed on it. During manufacturing, the oxide layer at the welding surfaces of the two layers is first removed. Then, a brazing filler layer is filled into the contact surface of one layer. The second layer is then placed over the bottom layer, and the first and second layers are then welded together by heating, forming a sealed cooling water channel between them. This process requires cleaning brazing residue after welding, is complex, requires high-temperature heating, has high production costs, and is prone to causing air pollution. Utility Model Content

[0003] The purpose of this utility model is to solve the above-mentioned technical problems and provide a water-cooled plate for new energy batteries.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A water-cooled plate for a new energy battery includes a first plate and a second plate. The first plate has a water channel groove, which has multiple sets of parallel DC section grooves. The ends of adjacent DC section grooves are connected by an arc-shaped groove. The second plate covers the first plate, and the first plate and the second plate are welded together to form an annular weld and multiple spot welds. The water channel groove is located in the inner circle formed by the annular weld, and the spot welds are located in the gap between adjacent DC sections.

[0006] Using the above technical solution, the first layer plate and the second layer plate are fixed by welding, so that the second layer plate covers the water channel groove to form a cooling water flow channel. By setting an annular weld on the outside of the water channel groove, the annular weld makes the first layer plate and the second layer plate form an annular seal at the annular weld, so that the water in the water channel groove will not flow out from between the first layer plate and the second layer plate to the outside of the plate.

[0007] Preferably, a protrusion is provided on the side of the first layer plate near the second layer plate. The protrusion contacts and welds with the second layer plate to form a spot weld. An annular protrusion is provided on the side of the first layer plate near the second layer plate. The annular protrusion is located outside the water channel groove and contacts and welds with the second layer plate to form an annular weld. During welding, the annular protrusion contacts the second layer plate to form a projection weld, which makes the weld discharge current position more concentrated and improves the welding quality. By using the protrusion to perform projection welding with the second layer plate, multiple weld points can be welded simultaneously, improving welding efficiency.

[0008] Preferably, the second layer plate is provided with a positioning groove, which matches the protrusion so that the protrusion is engaged in the positioning groove. The positioning groove and the protrusion cooperate to facilitate the positioning of the first and second layers plate.

[0009] Preferably, multiple spot welds are provided between the grooves of adjacent DC sections. The first layer plate and the second layer plate are fixed by the spot welds, so that the first layer plate and the second layer plate between the DC sections are firmly attached, preventing the water flow of the DC section from flowing through the gap between the first layer plate and the second layer plate.

[0010] Preferably, the circumferential weld and spot weld are formed by resistance welding. Preferably, the circumferential weld is formed by roll welding. Roll welding of the circumferential weld creates a seal on the water channel groove, forming an independent, sealed space. Combined with spot welding, this simple process forms the cooling water flow channel on the water-cooled plate. Compared to brazing, this method offers stable and reliable welding quality, good sealing effect, simple process, no surface treatment required, significantly reduced costs, good environmental friendliness and corrosion resistance, and greatly improved production efficiency and welding strength.

[0011] Preferably, the thickness of the first layer is 1 to 1.2 mm, and the thickness of the second layer is 1.5 to 2 mm.

[0012] This utility model provides a water-cooled plate for a new energy battery, which has the following advantages: The first and second layers are fixed by welding, so that the second layer covers the water channel groove to form a flow channel for cooling water. By setting an annular weld on the outside of the water channel groove, the annular weld forms an annular seal between the first and second layers at the annular weld, thus preventing water in the water channel groove from flowing out from between the first and second layers to the outside of the plate. When the first layer does not have protrusions or annular protrusions, the annular weld can be welded by resistance welding, specifically by roll welding. When the first layer has protrusions or annular protrusions, the annular weld can be welded by resistance welding, specifically by roll welding and projection welding. The operation is simple and efficient; the cost is low, the surface does not require treatment, it has good corrosion resistance, is environmentally friendly, and has high production efficiency; the seam weld has good sealing and corrosion resistance. Attached Figure Description

[0013] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings:

[0014] Figure 1 A top view of a water-cooled plate for a new energy battery provided by this utility model;

[0015] Figure 2 A cross-sectional structural diagram of a water-cooled plate for a new energy battery provided by this utility model;

[0016] Figure 3 This is a partial structural diagram of a water-cooled plate for a new energy battery in which the first and second layers are separated, as provided by this utility model.

[0017] The labels in the diagram are as follows: 1. First layer plate; 11. Protrusion; 12. Annular protrusion; 2. Second layer plate; 21. Positioning groove; 3. Water channel groove; 31. Direct current section groove; 32. Arc-shaped groove; 4. Annular weld; 5. Spot weld. Detailed Implementation

[0018] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0019] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0020] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0021] like Figures 1-2As shown, a new energy battery water-cooled plate includes a first plate 1 and a second plate 2. The first plate 1 is provided with a water channel groove 3. The water channel groove 3 is provided with multiple sets of parallel DC section grooves 31. The ends of adjacent DC section grooves 31 are connected by an arc-shaped groove 32. The second plate 2 covers the first plate 1, and the first plate 1 and the second plate 2 are welded together to form an annular weld 4 and multiple spot welds 5. The water channel groove 3 is located in the inner circle formed by the annular weld 4, and the spot welds 5 are located in the gap between adjacent DC sections.

[0022] Using the above technical solution, the first layer plate 1 and the second layer plate 2 are fixed by welding, so that the second layer plate 2 covers the water channel groove 3 to form a flow channel for cooling water. An annular weld 4 is provided on the outside of the water channel groove 3, forming an annular seal between the first layer plate 1 and the second layer plate 2 at the annular weld 4, thus preventing water in the water channel groove 3 from flowing out between the first layer plate 1 and the second layer plate 2 to the outside of the plate layer. When the first layer plate 1 does not have the protrusions 11 and the annular protrusions 12, the annular weld 4 is welded by resistance welding. Specifically, the annular weld can be welded using a roll welding process. The roll welding process is simple to operate, has high welding efficiency, and avoids the complicated process of brazing.

[0023] like Figure 3 As shown, a protrusion 11 is provided on the first layer plate 1 near the second layer plate 2. The protrusion 11 contacts and welds with the second layer plate 2 to form a spot weld 5. An annular protrusion 12 is provided on the first layer plate 1 near the second layer plate 2. The annular protrusion 12 is located outside the water channel groove 3 and contacts and welds with the second layer plate 2 to form an annular weld 4. During welding, the annular protrusion 12 contacts the second layer plate 2 to form a projection weld, which makes the weld discharge current position more concentrated and improves the welding quality. The projection weld between the protrusion 11 and the second layer plate 2 allows multiple weld points to be welded simultaneously, improving welding efficiency. A positioning groove 21 is provided on the second layer plate 2. The positioning groove 21 matches the protrusion 11 so that the protrusion 11 is embedded in the positioning groove 21. The positioning groove 21 and the protrusion 11 cooperate to facilitate the positioning of the first layer plate 1 and the second layer plate 2.

[0024] Specifically, multiple spot welds 5 are provided between adjacent DC section grooves 31. The first layer plate 1 and the second layer plate 2 are fixed by the spot welds 5, so that the first layer plate 1 and the second layer plate 2 between the DC sections are firmly attached, preventing the water flow of the DC section from flowing through the gap between the first layer plate 1 and the second layer plate 2.

[0025] Specifically, the annular weld 4 and spot weld 5 are formed by resistance welding. Preferably, the annular weld 4 is welded using a roll welding process. By rolling welding the annular weld 4, a seal is formed on the water channel groove 3, creating an independent, sealed space. This simple combination with spot welding achieves the processing of cooling water channels on the water-cooled plate. Compared to brazing, this process offers stable and reliable welding quality, good sealing effect, simple process, no surface treatment required, significantly reduced costs, good environmental friendliness and corrosion resistance, and greatly improved production efficiency and welding strength.

[0026] Specifically, the thickness of the first layer 1 is 1 to 1.2 mm, and the thickness of the second layer 2 is 1.5 to 2 mm.

[0027] A new energy battery water-cooling plate is processed according to the following steps:

[0028] The first layer plate 1 is placed at a preset position on the second layer plate 2, such that the protrusion 11 on the first layer plate 1 corresponds to the positioning groove 21 on the second layer plate 2;

[0029] The protrusion 11 of the first layer plate 1 and the positioning groove 21 of the second layer plate 2 are placed between the two electrodes of the spot welding equipment and welded and fixed by spot welding.

[0030] After spot welding the first layer plate 1 and the second layer plate 2 together, they are placed between the two electrodes of the seam welding equipment and welded together by resistance welding to form a ring weld 4 for sealing and fixing.

[0031] It should be noted that the proposed solution is also applicable to other water-cooled plates with similar structures.

[0032] The parts not covered in this technical solution can be implemented using existing technologies.

[0033] The foregoing has shown and described the basic principles, main features, and characteristics of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model includes the appended claims and their equivalents.

Claims

1. A water-cooled plate for a new energy battery, characterized in that: The system includes a first plate (1) and a second plate (2). The first plate (1) is provided with a water channel groove (3). The water channel groove (3) is provided with multiple sets of parallel DC section grooves (31). The ends of adjacent DC section grooves (31) are connected by an arc groove (32). The second plate (2) covers the first plate (1). The first plate (1) and the second plate (2) are welded together to form an annular weld (4) and multiple spot welds (5). The water channel groove (3) is located in the inner circle formed by the annular weld (4). The spot welds (5) are located in the gap between adjacent DC sections.

2. The water-cooled plate for a new energy battery according to claim 1, characterized in that: A protrusion (11) is provided on the side of the first layer plate (1) near the second layer plate (2). The protrusion (11) contacts the second layer plate (2) and is welded to form a spot weld (5). An annular protrusion (12) is provided on the side of the first layer plate (1) near the second layer plate (2). The annular protrusion (12) is located outside the water channel groove (3) and contacts the second layer plate (2) to form an annular weld (4).

3. The water-cooled plate for a new energy battery according to claim 2, characterized in that: The second layer plate (2) is provided with a positioning groove (21), which matches the protrusion (11) so that the protrusion (11) is engaged in the positioning groove (21).

4. The water-cooled plate for a new energy battery according to claim 1, characterized in that: Multiple spot welds (5) are provided between adjacent DC section grooves (31).

5. A water-cooled plate for a new energy battery according to claim 1, characterized in that: The circumferential weld (4) and spot weld (5) are formed by resistance welding.

6. A water-cooled plate for a new energy battery according to claim 1, characterized in that: The circumferential weld (4) is welded using a roll welding process.

7. A water-cooled plate for a new energy battery according to claim 1, characterized in that: The thickness of the first layer (1) is 1 to 1.2 mm, and the thickness of the second layer (2) is 1.5 to 2 mm.

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