Cold plate structure

Abstract

The utility model discloses a cold plate structure which comprises a flat pipe, a connecting piece and a first collecting pipe, the flat pipe is connected with the first collecting pipe through the connecting piece, and welding aiding pieces are attached to the outer side of the connecting piece and the outer side of the first collecting pipe. According to the cold plate structure, the welding aiding pieces are attached to the outer sides of the connecting pieces and the first collecting pipes, in the brazing process, the welding aiding pieces are melted to drive scaling powder to flow, the two ends of the connecting pieces are stably connected with the flat pipes and the first collecting pipes respectively, the brazing effect of the cold plate structure is improved, meanwhile, the flat pipes and the first collecting pipes serve as independent heat dissipation individuals, and the heat dissipation efficiency is improved. And the brazing effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid cooling plates, and more particularly to a cooling plate structure. Background Art

[0002] Cylindrical batteries are the most widely used in new energy vehicle power systems due to their high degree of automation, strong product consistency, diverse combination forms, and low manufacturing costs. However, due to the low energy content of a single cylindrical battery, a battery power system typically requires hundreds or even thousands of cylindrical batteries.

[0003] In the power system of cylindrical batteries, each cylindrical battery is a heat source. With the application of 5C charging technology for automobiles, the requirements for heat dissipation of cylindrical batteries are gradually increasing. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the brazing effect of the cold plate structure.

[0005] The utility model solves the above technical problems through the following technical means: a cold plate structure includes a flat tube, a connector, and a collecting pipe. The flat tube is connected to the collecting pipe through the connector, and the outer sides of the connector and the collecting pipe are covered with welding parts.

[0006] By applying flux pieces on the outside of the connector and the collector, during the brazing process, the melting of the flux pieces will drive the flux to flow, firmly connecting the two ends of the connector to the flat tube and the collector respectively, thereby improving the brazing effect of the cold plate structure. At the same time, the flat tube and the collector are used as independent heat dissipation entities, further improving the brazing effect.

[0007] As a preferred technical solution, the soldering member is a layered aluminum member and is fixedly mounted on the outer side of the connecting member and the manifold by roller pressing.

[0008] As a preferred technical solution, the connecting piece includes a second header and a third header. One end of the second header is fixedly connected to the flat tube, and the end thereof facing away from the flat tube is fixedly connected to the first header through the third header.

[0009] As a preferred technical solution, the second collecting pipe is provided with an assembly hole 1 adapted to fit the flat tube.

[0010] As a preferred technical solution, the second collecting pipe is provided with a flanging hole adapted to the flat tube, and the outer edge of the flanging hole extends into the second collecting pipe.

[0011] As a preferred technical solution, the end of the second collecting pipe away from the flat tube is provided with an assembly hole 2 adapted for the third collecting pipe, and the end of the third collecting pipe away from the second collecting pipe is welded and fixed to the first collecting pipe.

[0012] As a preferred technical solution, the one end of the manifold three is extended into the manifold one and connected with the manifold one.

[0013] As a preferred technical solution, the one end of the manifold three is extended into the manifold one and connected with the manifold one.

[0014] As a preferred technical solution, the flat tube comprises a harmonica tube and is arranged in a wave shape, and the two ends of the flat tube are connected with one manifold one through the connecting pieces respectively.

[0015] As a preferred technical solution, a plurality of flat tubes are arranged between the adjacent manifolds one.

[0016] The utility model discloses the beneficial effect lies in:

[0017] (1) in the utility model, through being pasted and being arranged the fluxing aid on the connecting piece and the manifold one outside, in the brazing process, the fluxing aid melting will drive the fluxing agent flow, will the two ends of the connecting piece be connected with the flat tube and the manifold one respectively and be firmly connected, has improved the cold plate structure's effect of brazing, simultaneously takes the flat tube and the manifold one as independent radiating individual, has further improved the effect of brazing. DRAWINGS

[0018] Figure 1 The flat tube cross section structure schematic view is provided for the utility model embodiment 1;

[0019] Figure 2 The assembly hole one structure schematic view is provided for the utility model embodiment 1;

[0020] Figure 3 The assembly hole two structure schematic view is provided for the utility model embodiment 1;

[0021] Figure 4 The manifold three structure schematic view is provided for the utility model embodiment 1;

[0022] Figure 5 The manifold two structure schematic view is provided for the utility model embodiment 1;

[0023] Figure 6 The flat tube cross section structure schematic view is provided for the utility model embodiment 2;

[0024] Figure 7 The flanging hole cross section structure schematic view is provided for the utility model embodiment 3;

[0025] Figure 8 The cold plate structure schematic view is provided for the utility model embodiment 4;

[0026] Figure numbers: 1, flat tube; 11, assembly hole 1; 12, assembly hole 2; 13, flanging hole; 2, collecting pipe 1; 3, collecting pipe 2; 4, collecting pipe 3. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0028] Example 1

[0029] See Figure 1 A cold plate structure includes a flat tube 1, a connecting piece, and a collecting pipe 2. The flat tube 1 is welded and fixed to the collecting pipe 2 through the connecting piece. One end of the connecting piece is welded and fixed to the flat tube 1, and the other end is welded and fixed to the collecting pipe 2. The outside of the connecting piece and the collecting pipe 2 are covered with flux. The flat tube 1 is a metal tube, and the flat tube 1 includes a harmonica tube. The whole section or at least one section is wavy, and of course it can also be roughly serpentine. The wall thickness of the flat tube 1 is 0.5 mm. In this embodiment, the flux is a layered aluminum part, which is fixed to the outside of the connecting piece and the collecting pipe 2 by rolling. During the brazing process, the melting of the flux will drive the flux to flow, thereby firmly connecting and fixing the two ends of the connecting piece to the flat tube 1 and the collecting pipe 2 respectively.

[0030] It should be noted that in this embodiment, the material of the manifold 1 and the connector is 3003 aluminum alloy plate, and the soldering piece is an aluminum piece with a melting point lower than the base material, usually 4045 aluminum alloy plate or 4343 aluminum alloy plate is selected as the soldering piece material, see Figure 1 The processing process is to place the composite layer on the manifold or connector, and then roll the soldering piece into a thin aluminum sheet and apply it to the surface of the manifold or connector. During brazing, the soldering piece will melt, and the melting process will drive the flux to flow, and through the capillary phenomenon, the flux will be transported to the required welding area.

[0031] See Figure 2 、 Figure 3 Figure 4 、 Figure 5The connecting parts include a collecting pipe 2 3 and a collecting pipe 3 4. An assembly hole 11 adapted to the flat tube 1 is opened on the collecting pipe 2 3. An assembly hole 2 12 adapted to the collecting pipe 3 4 is opened on the end of the collecting pipe 2 3 away from the flat tube 1. The end of the collecting pipe 3 4 away from the collecting pipe 2 3 is welded and fixed to the collecting pipe 1 2. The end of the collecting pipe 3 4 connected to the collecting pipe 1 2 extends into the collecting pipe 1 2. One end of the collecting pipe 3 4 is vertically fixed to the collecting pipe 2 3, and the other end is vertically fixed to the collecting pipe 1 2. In this embodiment, the collecting pipe 1 2, the collecting pipe 2 3, and the collecting pipe 3 4 are all square tubes.

[0032] Example 2

[0033] See Figure 6 The difference between this embodiment and embodiment 1 is that the material thickness of the flat tube 1, the header 1 2, the header 2 3, and the header 3 4 is increased. The wall thickness of the flat tube 1 is 1.5 mm, which can improve the pressure resistance of the product. The heat dissipation medium is changed from coolant to refrigerant, and the product can be changed from a liquid cooling plate to a direct cooling plate.

[0034] Example 3

[0035] See Figure 7 The difference between this embodiment and embodiment 1 is that a flanging hole 13 adapted to the flat tube 1 is opened on the second collecting pipe 3, and the outer edge of the flanging hole 13 extends into the second collecting pipe 3, thereby increasing the contact area between the second collecting pipe 3 and the flat tube 1 and improving the welding strength.

[0036] Example 4

[0037] See Figure 8 The difference between this embodiment and embodiment 1 is that in this embodiment, two collecting pipes 2 are provided, each collecting pipe 2 is welded and fixed to one end of the flat tube 1 through a connecting piece, and a plurality of linearly distributed flat tubes 1 are provided between adjacent collecting pipes.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cold plate structure, characterized in that: The invention comprises a flat tube, a connecting piece and a collecting pipe. The flat tube is connected with the collecting pipe through the connecting piece. The outer sides of the connecting piece and the collecting pipe are covered with welding pieces.

2. A cold plate structure according to claim 1, characterized in that: The soldering piece is a layered aluminum piece and is fixedly arranged on the outer side of the connecting piece and the collecting pipe by rolling.

3. A cold plate structure according to claim 1, characterized in that: The connecting piece includes a second collecting pipe and a third collecting pipe. One end of the second collecting pipe is fixedly connected to the flat tube, and the other end thereof facing away from the flat tube is fixedly connected to the first collecting pipe via the third collecting pipe.

4. A cold plate structure according to claim 3, characterized in that: The second collecting pipe is provided with an assembly hole 1 which is matched with the flat tube.

5. The cold plate structure according to claim 3, characterized in that: The second collecting pipe is provided with a flanging hole adapted to the flat tube, and the outer edge of the flanging hole extends into the second collecting pipe.

6. A cold plate structure according to claim 3 or 4, characterized in that: An end of the second collecting pipe away from the flat tube is provided with a second assembly hole adapted to the third collecting pipe. An end of the third collecting pipe away from the second collecting pipe is welded and fixed to the first collecting pipe.

7. A cold plate structure according to claim 3 or 4, characterized in that: One end of the collecting pipe 3 connected to the collecting pipe 1 extends into the collecting pipe 1.

8. The cold plate structure according to claim 3, characterized in that: One end of the collecting pipe three is vertically fixed to the collecting pipe two, and the other end is vertically fixed to the collecting pipe one.

9. The cold plate structure according to claim 1, characterized in that: The flat tube includes a harmonica tube and is arranged in a wave shape. Both ends of the flat tube are respectively connected to a collecting pipe through a connecting piece.

10. The cold plate structure according to claim 9, characterized in that: A plurality of flat tubes are arranged between adjacent collecting pipes.

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