Tooling for laser welding of liquid cold plate

Abstract

The utility model relates to a kind of for liquid cooling plate laser welding tool, relate to welding tool technical field. Including: tool platform;Vacuum adsorption fixing mechanism, vacuum adsorption fixing mechanism is set in the front position of tool platform to be laser welded by vacuum adsorption with two liquid cooling plate workpieces of being mutually closely adhered to eliminate gap and fixed on tool platform;And cooling mechanism.The utility model uses vacuum adsorption fixing mechanism and flow channel plate are adsorbed on tool platform again to be welded, adopt this vacuum adsorption mode effectively eliminate the gap between uniform temperature plate and flow channel plate, to improve welding quality;While reducing the residual heat of laser welding by cooling mechanism, to reduce the thermal deformation of product. Above all, using this tool has the advantages such as fast welding speed, high welding quality, without using flux, avoid the problem of material strength decline caused by overall heating simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of welding tooling technology, and in particular to a tooling for laser welding of liquid-cooled plates. Background Technology

[0002] Currently, liquid cooling plates for battery packs in new energy vehicles are mainly welded, which is energy-intensive and difficult to control in terms of product quality. Laser welding technology for liquid cooling plates is a new, efficient, and precise welding method that reduces energy consumption and improves product quality stability. It is currently used in the new energy field, especially in the battery cooling system of electric vehicles. The liquid cooling plate (water cooling plate) structure includes two parts: a heat spreader (01) and a flow channel plate (02) (see Appendix). Figure 3 The heat spreader (01) has pre-drilled holes and other structures. During welding, the heat spreader and the flow channel plate need to be joined together, and the gap at the joining position should be reduced in order to carry out laser welding.

[0003] However, this technology uses a laser as a heat source, and laser welding requires a high gap between the heat spreader and the flow channel plate; any gap will affect the welding quality. Simultaneously, laser welding still involves heat input, causing deformation of the cold plate. Therefore, the issues of the gap between the flow channel plate and the heat spreader and the concentrated heat input during laser welding of liquid-cooled plates urgently need to be addressed.

[0004] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a tooling for laser welding of liquid-cooled plates. Utility Model Content

[0005] The purpose of this invention is to provide a tooling for laser welding of liquid-cooled plates in order to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a tooling for laser welding of liquid-cooled plates, comprising:

[0008] Tooling platform;

[0009] A vacuum adsorption fixing mechanism is provided on the front of the tooling platform to make the two liquid-cooled plate workpieces to be laser welded fit together tightly through vacuum adsorption to eliminate gaps and fix them on the tooling platform.

[0010] And a cooling mechanism, which is located on the back of the tooling platform to cool down the residual heat generated during laser welding of the liquid-cooled plate.

[0011] Furthermore, the tooling platform has a flat plate structure.

[0012] Furthermore, a sealing ring is provided on the front of the tooling platform.

[0013] Furthermore, the sealing ring is located on the periphery of the vacuum adsorption fixing mechanism.

[0014] Furthermore, the vacuum adsorption fixing mechanism includes a vacuum channel, which is fixedly connected to the front position of the tooling platform, and at least two quick-connect plugs are provided on the vacuum channel.

[0015] Furthermore, the vacuum channel has holes to generate negative pressure airflow at the hole locations to adsorb the liquid-cooled plate workpiece.

[0016] Furthermore, the quick-connect plug on the vacuum channel includes a first vacuum pump connector, a second vacuum pump connector, a third vacuum pump connector, and a fourth vacuum pump connector;

[0017] The first vacuum pump connector, the second vacuum pump connector, the third vacuum pump connector, and the fourth vacuum pump connector are all connected to the vacuum passage.

[0018] Furthermore, the first vacuum pump connector, the second vacuum pump connector, the third vacuum pump connector, and the fourth vacuum pump connector are all located on the same side exposed on the tooling platform.

[0019] Furthermore, the cooling mechanism includes a cooling water channel located on the back of the tooling platform, with an inlet and an outlet connected to both ends of the cooling water channel, respectively.

[0020] Furthermore, the cooling water channel is arranged in a continuously bent manner on the back of the tooling platform, and the bent portion of the cooling water channel is exposed outside the tooling platform.

[0021] The inlet and outlet are both located on the same side of the tooling platform.

[0022] In the above technical solution, the tooling for laser welding of liquid-cooled plates provided by this utility model has the following beneficial effects:

[0023] This invention utilizes a vacuum adsorption fixing mechanism to adhere the heat spreader and flow channel plate to the tooling platform before welding. This vacuum adsorption method effectively eliminates the gap between the heat spreader and flow channel plate, thereby improving welding quality. Simultaneously, a cooling mechanism reduces residual heat from laser welding, thus minimizing thermal deformation of the product. In summary, using this tooling offers advantages such as fast welding speed, high welding quality, and no need for flux, while avoiding the problem of reduced material strength caused by overall heating. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the structure of a tooling for laser welding of liquid-cooled plates provided in an embodiment of this utility model;

[0026] Figure 2 A three-dimensional structural diagram of a tooling for laser welding of liquid-cooled plates provided for an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the liquid cooling plate loading and fixing of a tooling for laser welding of liquid cooling plates, provided as an embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Tooling platform; 2. Sealing ring; 3. Vacuum air passage; 4. First vacuum pump connector; 5. Second vacuum pump connector; 6. Third vacuum pump connector; 7. Fourth vacuum pump connector; 8. Cooling water passage; 9. Water inlet; 10. Water outlet; 01. Heat spreader plate; 02. Flow channel plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0031] Please see Figure 1-3 A tooling for laser welding of liquid-cooled plates, comprising:

[0032] Tooling platform 1;

[0033] The vacuum adsorption fixing mechanism is located on the front of the tooling platform 1. It is used to tightly adhere two liquid-cooled plate workpieces to be laser welded by vacuum adsorption to eliminate gaps and fix them on the tooling platform 1. The assembled heat spreader plate 01 and flow channel plate 02 are to be laser welded. The two workpieces are placed on the tooling platform 1, and when the vacuum adsorption fixing mechanism is evacuated, a vacuum state is formed in the cavity formed by the heat spreader plate 01 and the flow channel plate 02 to achieve vacuum adsorption fixing. The heat spreader plate 01 itself has a reserved hole. When the two workpieces are placed on the tooling platform 1, the heat spreader plate 01 is located close to the vacuum adsorption fixing mechanism, and the outer layer is the flow channel plate 02. When the vacuum is evacuated, the reserved hole of the heat spreader plate 01 makes the flow channel plate 02 and the heat spreader plate 01 also form a vacuum adsorption state. Thus, while tightly adhering the two liquid-cooled plate workpieces to eliminate gaps, the two workpieces are also fixed on the tooling platform 1 to facilitate laser welding. After welding is completed, the vacuum adsorption fixing mechanism is closed or filled with gas to eliminate the vacuum negative pressure, and the welded workpieces are removed.

[0034] The cooling mechanism is located on the back of the tooling platform 1 to cool down the residual heat generated during laser welding of the liquid-cooled plate. By reducing the residual heat of laser welding through the cooling mechanism, the thermal deformation of the product can be reduced.

[0035] This fixture uses vacuum adsorption to reduce the gap between the heat spreader and the flow channel plate, ensuring a gap of less than 0.5 mm to guarantee the quality of laser welding. A cooling mechanism reduces residual heat from laser welding, thereby minimizing thermal deformation of the product. This fixture can meet the requirements for laser welding of aluminum alloy plates, lap welding, and liquid-cooled plate laser welding of new energy vehicle battery packs, with minimal deformation, low energy consumption, and high efficiency.

[0036] Furthermore, the tooling platform 1 has a flat plate structure to facilitate the fixation of the liquid cooling plate.

[0037] Furthermore, a sealing ring 2 is provided on the front of the tooling platform 1.

[0038] Furthermore, the sealing ring 2 is located on the periphery of the vacuum adsorption fixing mechanism.

[0039] Specifically, the sealing ring 2 can support and seal the liquid cooling plate to be welded, so as to form a sealed cavity during the vacuuming stage, thereby forming a vacuum adsorption and fixation of the liquid cooling plate. At the same time, the sealing ring 2, due to its material properties, also plays an anti-slip role for the workpiece, preventing the workpiece from sliding and moving sideways during the welding stage and affecting the welding quality.

[0040] Furthermore, the vacuum adsorption fixing mechanism includes a vacuum channel 3, which is fixedly connected to the front of the tooling platform 1. At least two quick-connect plugs are provided on the vacuum channel 3, which are used to quickly connect to a vacuum pump to evacuate the vacuum channel 3.

[0041] Furthermore, the vacuum channel 3 has holes to generate negative pressure airflow at the hole positions to adsorb the liquid-cooled plate workpiece. When the vacuum channel 3 is evacuated by a vacuum pump, negative pressure airflow is generated at the hole positions, thereby creating a vacuum negative pressure in the cavity formed above the workpiece to adsorb and fix the workpiece.

[0042] Furthermore, the quick-connect plugs on the vacuum channel 3 include a first vacuum pump connector 4, a second vacuum pump connector 5, a third vacuum pump connector 6, and a fourth vacuum pump connector 7. These multiple first vacuum pump connectors 4, second vacuum pump connectors 5, third vacuum pump connectors 6, and fourth vacuum pump connectors 7 enable more flexible implementation of rapid vacuuming operations within the vacuum channel 3.

[0043] The first vacuum pump connector 4, the second vacuum pump connector 5, the third vacuum pump connector 6, and the fourth vacuum pump connector 7 are all connected to the vacuum passage 3 so that the vacuum passage 3 can be quickly evacuated after the first vacuum pump connector 4, the second vacuum pump connector 5, the third vacuum pump connector 6, and the fourth vacuum pump connector 7 are connected to the vacuum pump.

[0044] Furthermore, the first vacuum pump connector 4, the second vacuum pump connector 5, the third vacuum pump connector 6, and the fourth vacuum pump connector 7 are all located on the same side exposed on the tooling platform 1, so as to facilitate the connection operation with the vacuum pump and not affect the fixation of the workpiece.

[0045] As a preferred technical solution, the vacuum adsorption fixing mechanism has four quick-connect plugs: a first vacuum pump connector 4, a second vacuum pump connector 5, a third vacuum pump connector 6, and a fourth vacuum pump connector 7. These four vacuum pump connectors are located on the side of the tooling platform. According to the adsorption force formula, adsorption force = S*P / μ, where S represents the adsorption area (cm²). 2 P represents air pressure (kg / cm²) 2 μ represents a coefficient ≥ 2.5. This formula is used to set a suitable adsorption force to fix the temperature distribution plate 01 and the flow channel plate 02.

[0046] Furthermore, the cooling mechanism includes a cooling water channel 8 located on the back of the tooling platform 1, with an inlet 9 and an outlet 10 connected to both ends of the cooling water channel 8. That is, in this embodiment, the cooling mechanism adopts a water-cooled heat dissipation method, with coolant entering the cooling water channel 8 from the inlet 9 and flowing out from the outlet 10. During the flow of the coolant, residual heat generated during welding is carried away.

[0047] Furthermore, the cooling water channel 8 is arranged in a continuous bend on the back of the tooling platform 1, and the bend of the cooling water channel 8 is exposed outside the tooling platform 1, so as to implement cooling and temperature reduction over a larger area and improve the cooling effect.

[0048] The inlet 9 and outlet 10 are both located on the same side exposed on the tooling platform 1, so as to facilitate the flow of coolant in the cooling mechanism and avoid affecting the fixation of the workpiece.

[0049] In summary, this invention uses a vacuum adsorption fixing mechanism to adsorb the heat spreader and flow channel plate onto the tooling platform before welding. This vacuum adsorption method effectively eliminates the gap between the heat spreader and flow channel plate, thereby improving welding quality. Simultaneously, the cooling mechanism reduces residual heat from laser welding, thus minimizing thermal deformation of the product. In conclusion, using this tooling offers advantages such as fast welding speed, high welding quality, and no need for flux, while avoiding the problem of reduced material strength caused by overall heating.

[0050] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A tooling for laser welding of liquid-cooled plates, characterized in that, include: Tooling platform (1); Vacuum adsorption fixing mechanism, which is set on the front of the tooling platform (1) to make the two liquid-cooled plate workpieces to be laser welded fit together tightly by vacuum adsorption to eliminate gaps and fix them on the tooling platform (1). And a cooling mechanism, which is located on the back of the tooling platform (1) to cool down the residual heat generated during laser welding of the liquid-cooled plate.

2. The tooling for laser welding of liquid-cooled plates according to claim 1, characterized in that, The tooling platform (1) is a flat plate structure.

3. The tooling for laser welding of liquid-cooled plates according to claim 1, characterized in that, The tooling platform (1) has a sealing ring (2) on its front side.

4. The tooling for laser welding of liquid-cooled plates according to claim 3, characterized in that, The sealing ring (2) is located on the periphery of the vacuum adsorption fixing mechanism.

5. The tooling for laser welding of liquid-cooled plates according to claim 1, characterized in that, The vacuum adsorption fixing mechanism includes a vacuum channel (3), which is fixedly connected to the front position of the tooling platform (1), and at least two quick-connect plugs are provided on the vacuum channel (3).

6. The tooling for laser welding of liquid-cooled plates according to claim 5, characterized in that, The vacuum channel (3) has holes to generate negative pressure airflow at the hole locations to adsorb the liquid-cooled plate workpiece.

7. The tooling for laser welding of liquid-cooled plates according to claim 5, characterized in that, The quick-connect plugs on the vacuum duct (3) include a first vacuum pump connector (4), a second vacuum pump connector (5), a third vacuum pump connector (6), and a fourth vacuum pump connector (7); The first vacuum pump connector (4), the second vacuum pump connector (5), the third vacuum pump connector (6), and the fourth vacuum pump connector (7) are all connected to the vacuum passage (3).

8. The tooling for laser welding of liquid-cooled plates according to claim 7, characterized in that, The first vacuum pump connector (4), the second vacuum pump connector (5), the third vacuum pump connector (6), and the fourth vacuum pump connector (7) are all located on the same side exposed on the tooling platform (1).

9. The tooling for laser welding of liquid-cooled plates according to claim 1, characterized in that, The cooling mechanism includes a cooling water channel (8) located on the back of the tooling platform (1), with an inlet (9) and an outlet (10) connected to both ends of the cooling water channel (8).

10. The tooling for laser welding of liquid-cooled plates according to claim 9, characterized in that, The cooling water channel (8) is arranged in a continuous bend on the back of the tooling platform (1), and the bend of the cooling water channel (8) is exposed outside the tooling platform (1). The inlet (9) and outlet (10) are both located on the same side exposed on the tooling platform (1).

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