Cold plate laser welding clamp

Abstract

The utility model discloses a cold plate laser welding clamp, and belongs to the technical field of automobile part welding. The device is provided with a base which is used for supporting a cold plate; the frame pressing frame is of an annular structure and is placed on the upper portion of the cold plate, the shape of an inner ring of the frame pressing frame is the same as that of the outer edge of the cold plate, and the frame pressing frame deviates towards the center of the cold plate so that the frame pressing frame and the cold plate can form an overlapping part to tightly press the edge position of the cold plate; the transverse pressing strip is arranged at one end of the edge pressing frame, and the two ends of the transverse pressing strip penetrate through the edge pressing frame through connecting pieces to be fixedly connected with the base; the cold plate welding fixture has the advantages that the cold plate welding fixture is simple in structure, convenient to use and low in manufacturing cost, a welding bead is not shielded by the cold plate welding fixture when the cold plate welding fixture is used, all positions needing to be welded can be directly welded after the cold plate welding fixture is mounted, and the cold plate welding fixture is high in welding efficiency. And the welding takt is improved, and the welding quality is good.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component welding, in particular to a cold plate laser welding fixture. Background Art

[0002] Battery liquid cooling plates are key components in the thermal management system of new energy vehicles. Traditionally, the upper and lower plates of liquid cooling plates are sealed using furnace brazing. However, brazing has several drawbacks: 1. Brazing furnaces are bulky and energy-intensive; 2. Brazing requires the use of flux, potentially polluting the environment; 3. Brazing is a demanding process, requiring skilled techniques and experience, and improper operation can easily lead to defects such as pores and cracks; 4. Brazing is expensive, requiring the purchase of flux and equipment. Currently, laser welding is an alternative to brazing, but fixture design is complex and expensive. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the prior art and provide a cold plate laser welding fixture which can improve the welding cycle and reduce the fixture cost.

[0004] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0005] The utility model discloses a cold plate laser welding fixture, comprising:

[0006] A base, which is used to support the cold plate;

[0007] A pressing frame, which is annular and placed on the upper part of the cold plate, wherein the inner ring shape of the pressing frame is the same as the outer edge of the cold plate and is offset toward the center of the cold plate so as to form an overlapping portion with the cold plate to press the edge of the cold plate tightly;

[0008] A horizontal pressure strip is arranged at one end of the pressure frame, and both ends of the horizontal pressure strip pass through the pressure frame and are fixedly connected to the base via connecting pieces;

[0009] A plurality of longitudinal pressure strips are arranged on the upper portion of the cold plate and fixedly connected to the base through the connecting piece.

[0010] Furthermore, a bottom plate is installed on the upper portion of the base, and the bottom plate is stacked on the lower portion of the cold plate.

[0011] Furthermore, the base is fixedly connected with a positioning pin at a position corresponding to the pressure frame, which is used to pass through the bottom plate, the cold plate and the pressure frame.

[0012] Furthermore, the connecting member passes through the transverse pressure strip or the longitudinal pressure strip, the cold plate weight reduction hole and is threadedly connected to the threaded hole of the base.

[0013] Furthermore, the connecting member is a bolt.

[0014] Furthermore, the inner ring of the pressure frame is offset from the outer edge of the cold plate toward the center thereof by 3 mm.

[0015] Furthermore, the length of the horizontal pressing strip is equal to the width of the pressing frame.

[0016] Furthermore, the pressing frame further includes handles, and the handles are fixedly connected to both sides of the pressing frame.

[0017] Furthermore, the pressure frame and the transverse and longitudinal pressure strips all have a draft angle of 30° in the z-axis direction.

[0018] In the above technical solution, the utility model provides a cold plate laser welding fixture, which has the following beneficial effects:

[0019] The cold plate laser welding fixture designed by the utility model includes a base and a pressing frame. The pressing frame is annular in structure. The outer edge of the cold plate is pressed circumferentially by the pressing frame to avoid the welding position in the center of the cold plate. One end of the pressing frame is connected to the base through a horizontal pressing strip, which provides a pressing force for the pressing frame to press the cold plate. A plurality of longitudinal pressing strips are provided in the middle of the cold plate. The longitudinal pressing strips are used to press the cold plate at intervals to avoid the weld position to the greatest extent. The fixture has the following beneficial effects:

[0020] 1. Simple structure and low production cost;

[0021] 2. The fixture does not block the weld bead. Once installed, all positions that need to be welded can be welded directly, which improves the welding cycle;

[0022] 3. The pressure frame and pressure strip meet the pressing requirements, effectively control the product deformation caused by welding, and effectively ensure the welding quality;

[0023] 4. No need to add solder, more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 The utility model discloses a schematic diagram of the overall structure of a cold plate laser welding fixture.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Pressure frame; 3. Handle; 4. Cold plate; 5. Horizontal pressure strip; 6. First longitudinal pressure strip; 7. Second longitudinal pressure strip; 8. Third longitudinal pressure strip. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] See also Figure 1 As shown;

[0030] The utility model discloses a cold plate laser welding fixture, comprising:

[0031] Base 1, which is used to support the cold plate 4. Specifically, the projected area of ​​the base 1 on the horizontal plane is larger than the area of ​​the cold plate 4;

[0032] The pressing frame 2 is annular and is placed on the upper part of the cold plate 4. The inner ring shape of the pressing frame 2 is the same as the outer edge of the cold plate 4 and is offset toward the center of the cold plate 4 so that the cold plate 4 forms an overlapping portion to press the edge of the cold plate 4;

[0033] The horizontal pressure strip 5 is arranged at one end of the pressure frame 2. The two ends of the horizontal pressure strip 5 are fixedly connected to the base through connecting pieces passing through the pressure frame 2. The horizontal pressure strip 5 provides a pressing force for the pressure frame 2 to press the cold plate 4;

[0034] Multiple longitudinal pressure strips are provided on the upper portion of the cold plate 4 and fixedly connected to the base via connectors. In this embodiment, three longitudinal pressure strips are provided: a first longitudinal pressure strip 6, a second longitudinal pressure strip 7, and a third longitudinal pressure strip 8. The second pressure strip 7 is provided in the middle of the cold plate 4, and the first longitudinal pressure strip 6 and the third longitudinal pressure strip 8 are provided on both sides of the second pressure strip 7. The three longitudinal pressure strips evenly compress the cold plate 4.

[0035] Preferably, a bottom plate is further installed on the upper portion of the base 1 , and the bottom plate is stacked on the lower portion of the cold plate 4 , so that the base 1 is in contact with the cold plate 4 through the bottom plate.

[0036] Preferably, the base 1 is further fixedly connected with a positioning pin at a position corresponding to the pressure frame 2 , which is used to penetrate the bottom plate, the cold plate 4 , and the pressure frame 2 , thereby positioning the bottom plate, the cold plate 4 , and the pressure frame 2 on the base 1 .

[0037] Preferably, the connecting piece passes through the transverse pressure strip 5 or the longitudinal pressure strip, the cold plate weight reduction hole and the threaded hole on the base 1 and is threadedly connected. The connecting piece is a bolt in the prior art.

[0038] Preferably, the inner ring of the press frame 2 is offset 3mm from the outer edge of the cold plate 4 toward its center. The press frame 2 is an annular frame, and the inner ring forms a 3mm overlap with the outer edge of the cold plate 4. The overlapped portion circumferentially presses the outer edge of the cold plate 4, thereby avoiding the weld on the surface of the cold plate 4.

[0039] Preferably, the length of the transverse pressure strip 5 is equal to the width of the pressure frame 2 , and the connecting piece passes through the transverse pressure strip 5 , the weight-reducing hole of the cold plate 4 , and the bottom plate and is connected to the threaded hole on the base 1 .

[0040] Preferably, the pressing frame 2 further includes a handle 3 , and the handles 3 are fixedly connected to both sides of the pressing frame 2 , so that the pressing frame 2 can be easily taken and used.

[0041] Preferably, the frame 2 , the transverse pressing strip 5 and the longitudinal pressing strip all have a draft angle of 30° in the z-axis direction, which further facilitates welding.

[0042] In the above technical solution, the cold plate laser welding fixture provided by the present invention has the following beneficial effects:

[0043] 1. Simple structure and low production cost;

[0044] 2. The fixture does not block the weld bead. Once installed, all positions that need to be welded can be welded directly, which improves the welding cycle;

[0045] 3. The pressure frame and pressure strip meet the pressing requirements, effectively control the product deformation caused by welding, and effectively ensure the welding quality;

[0046] 4. No need to add solder, more environmentally friendly.

[0047] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description 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 cold plate laser welding fixture, characterized in that, include: A base (1) for supporting the cold plate (4); A pressing frame (2) is constructed in an annular structure and is placed on the upper part of the cold plate (4); the inner ring shape of the pressing frame (2) is the same as the outer edge of the cold plate (4) and is offset toward the center of the cold plate (4) so ​​as to form an overlapping portion with the cold plate (4) to press the edge position of the cold plate (4); A transverse pressure strip (5) is arranged at one end of the pressure frame (2), and both ends of the transverse pressure strip (5) pass through the pressure frame (2) and are fixedly connected to the base (1) via connecting pieces; A plurality of longitudinal pressure strips are arranged on the upper portion of the cold plate (4) and are fixedly connected to the base (1) via the connecting piece.

2. A cold plate laser welding fixture according to claim 1, characterized in that ； The upper portion of the base (1) is also provided with a bottom plate, and the bottom plate is stacked on the lower portion of the cold plate (4).

3. A cold plate laser welding fixture according to claim 2, characterized in that; The base (1) is also fixedly connected with a positioning pin at a position corresponding to the pressure frame (2), which is used to penetrate the bottom plate, the cold plate (4), and the pressure frame (2).

4. The cold plate laser welding fixture according to claim 1, characterized in that ； The connecting piece passes through the transverse pressure strip (5) or the longitudinal pressure strip, the weight-reducing hole of the cold plate (4), and is threadedly connected to the threaded hole of the base (1).

5. The cold plate laser welding fixture according to claim 4, characterized in that ； The connecting piece is a bolt.

6. The cold plate laser welding fixture according to claim 1, characterized in that ； The inner ring of the pressure frame (2) is offset from the outer edge of the cold plate (4) toward its center by 3 mm.

7. The cold plate laser welding fixture according to claim 1, characterized in that ； The length of the transverse pressing strip (5) is equal to the width of the pressing frame (2).

8. The cold plate laser welding fixture according to claim 1, characterized in that ； The pressing frame (2) further comprises handles (3), and the handles (3) are fixedly connected to both sides of the pressing frame (2).

9. The cold plate laser welding fixture according to claim 1, characterized in that ； The pressure frame (2), the transverse pressure strip (5) and the longitudinal pressure strip all have a draft angle of 30° in the z-axis direction.

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