An industrial cooling copper backplane

Abstract

The present invention discloses an industrial cooling copper backplane, which includes a backplane body, a cover plate, and at least one stepped groove extending along a certain direction provided on the backplane body. A first type of welding area is provided on the outer side of the cover plate corresponding to the end of the extending direction of the stepped groove. One end of the first type of welding area covers the corresponding end of the cover plate, and the other end of the first type of welding area is away from the corresponding cover plate and located on the backplane body. Due to the provision of the first type of welding area in the above-mentioned cooling copper backplane of the present application, the connection between the cover plate and the backplane body at the end of the extending direction on the stepped groove is more reliable and the sealing performance is better. During long-term use, defects such as cracking are not likely to occur. Thereby effectively ensuring the sealing performance of the stepped groove, enabling the cooling water to operate well in the stepped groove, and thus ensuring that the cooling copper backplane can maintain a good cooling effect stably for a long time.

Description

Technical Field

[0001] The present invention relates to the field of manufacturing copper backplates for cooling, and particularly to industrial copper backplates for cooling. Background Art

[0002] Copper backplates for cooling are widely used in industry and have a highly efficient cooling function. For example, when operating in a vacuum chamber for manufacturing liquid crystals, a large amount of heat is generated by the sputtering target. Without cooling, the film formation quality and performance will be affected. Therefore, a cooling backplate is required to cool the liquid crystal during manufacturing. Another example is in the field of new energy vehicles, where a cooling backplate is used to cool the batteries of new energy vehicles. The main structure of the cooling backplate is: a plate made of non-ferrous metals (such as copper, copper alloy, aluminum, aluminum alloy, etc.), with stepped grooves inside. The stepped grooves are divided into an upper part and a lower part. The lower part is a water tank, and there are water inlets and outlets leading to the water tank on the plate. After covering the stepped grooves with a cover plate, they are hermetically sealed with the main body by welding. The backplate thus made can be used as a cooling backplate. Currently, the welding methods for the main body and the cover plate of the backplate include electron beam welding, diffusion welding, flux welding, etc.

[0003] Traditional copper backplates for cooling have the following disadvantages: After being used for a period of time, the cooling effect of the copper backplate for cooling significantly decreases. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide an industrial copper backplate for cooling, which can maintain a good cooling effect stably for a long time.

[0005] An industrial copper backplate for cooling includes a backplate main body, a cover plate, and at least one stepped groove extending in a certain direction provided on the backplate main body. A first type of welding zone is provided on the outer side of the cover plate corresponding to the end of the extending direction of the stepped groove. One end of the first type of welding zone covers the corresponding end of the cover plate, and the other end of the first type of welding zone is far from the corresponding cover plate and is located on the backplate main body.

[0006] Due to the provision of the first type of welding zone in the above-mentioned copper backplate for cooling of the present application, the connection between the cover plate and the backplate main body at the end of the extending direction of the stepped groove is more reliable and the sealing performance is better. During long-term use, defects such as cracking are not likely to occur. Thus, the sealing performance of the stepped groove is effectively ensured, enabling the cooling water to run well in the stepped groove, and thus ensuring that the copper backplate for cooling can maintain a good cooling effect stably for a long time.

[0007] In one embodiment, the stepped groove includes two straight portions and a connecting portion located between adjacent two straight portions. The intersection of the connecting portion and the straight portion is an arc transition portion.

[0008] In one embodiment, the first type of welding zone is provided on one side of the cover plate corresponding to the end of the straight portion away from the connecting portion.

[0009] In one embodiment, the second type of welding zone is provided on one side of the cover plate corresponding to the intersection of the connecting portion and the straight portion. One end of the second type of welding zone contacts the cover plate corresponding to the arc transition portion, and the other end of the second type of welding zone is away from the corresponding cover plate and located on the backplane body.

[0010] In one embodiment, the first type of welding zone or the second type of welding zone is respectively provided at both ends of a diagonal of the backplane body.

[0011] In one embodiment, the stepped groove includes a plurality of straight portions arranged at intervals, and the straight portions are sequentially connected end to end through a plurality of connecting portions.

[0012] In one embodiment, the first type of welding zone is respectively provided at both ends of a diagonal of the backplane body.

[0013] In one embodiment, the first type of welding zone is a friction stir welding type welding zone, and the starting end of the first type of welding zone is the end away from the corresponding cover plate.

[0014] In one embodiment, the second type of welding zone is a friction stir welding type welding zone, and the starting end of the second type of welding zone is the end away from the corresponding cover plate. Description of the Drawings

[0015] Figure 1 is a schematic diagram of an implementation manner of an industrial cooling copper backplane of an embodiment of the present application. Among them, the second type of welding zone is provided on one side of the arc transition portion, and the first type of welding zone is provided at the end of the stepped groove. Only a partial area of the cover plate is drawn in the figure.

[0016] Figure 2 is a schematic diagram of another implementation manner of an industrial cooling copper backplane of an embodiment of the present application. Among them, the first type of welding zone is respectively provided at both ends of the stepped groove. Only a partial area of the cover plate is drawn in the figure.

[0017] Wherein:

[0018] 110. The first type of welding zone 120. The second type of welding zone

[0019] 131. Cover plate 132. Cover plate 140. Stepped groove

[0020] 141. Straight portion 142. Connecting portion 143. Arc transition portion 150. Backplane body. Detailed Embodiments

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] As Figure 1 and Figure 2 shown, an embodiment of the present application provides an industrial cooling copper backplane. It includes a backplane body 150, a cover plate, and at least one stepped groove 140 extending along a certain direction provided on the backplane body 150. A first type of welding area 110 is provided on the outer side of the cover plate corresponding to the end of the stepped groove 140 in the extending direction. One end of the first type of welding area 110 covers the end of the corresponding cover plate 131, and the other end of the first type of welding area 110 is away from the corresponding cover plate 131 and is located on the backplane body 150.

[0023] Through long-term research, the present application has found that one of the main reasons for the decline in the cooling effect of the cooling copper backplane is that the welded joints at some parts between the cover plate 131 and the backplane body 150 are prone to minor cracking and other defects due to deformation. This will cause the cooling water in the stepped groove 140 sealed by the cover plate 131 to easily overflow from these minor cracks. As time goes by, these defects will gradually become more serious under the corrosion of the cooling water, thereby significantly reducing the cooling effect of the cooling copper backplane.

[0024] Due to the provision of the first type of welding area 110 in the above-mentioned cooling copper backplane of the present application, the connection between the cover plate 131 and the backplane body 150 at the end of the stepped groove 140 in the extending direction is more reliable, and defects such as cracking are not likely to occur during long-term use. Thus, the sealing performance of the stepped groove 140 is effectively guaranteed, enabling the cooling water to run well in the stepped groove 140, and thus ensuring that the cooling copper backplane can maintain a good cooling effect stably for a long time.

[0025] Specifically, if a stepped groove 140 has multiple ends along its extending direction, the above-mentioned first type of welding area 110 can be provided on the outer sides of some of these ends, or the above-mentioned first type of welding area 110 can be provided on the outer sides of all ends.

[0026] In this embodiment, the stepped groove 140 includes two straight portions 141 and a connecting portion 142 located between adjacent two straight portions 141. The intersection of the connecting portion 142 and the straight portion 141 is an arc transition portion 143.

[0027] For example, the two straight portions 141 are arranged in parallel, and one end of one straight portion 141 is connected to the other straight portion 141 through a vertically arranged connecting portion 142. The intersection of the connecting portion 142 and the corresponding straight portion 141 is an arc transition portion 143.

[0028] It is found through experiments that when the cover plate is welded by friction stir welding, if the joint between the connecting portion 142 and the straight portion 141 is in a right-angled shape, the hardness value of the material here is relatively low, that is, it is softer here, and it is easy to appear defects such as voids. After changing to the arc transition portion 143, the hardness value here is significantly increased, and it is not easy to appear defects such as voids. This is also beneficial to ensure the long-term stable operation of the cooling copper backplane.

[0029] On the basis of the above, the first type of welding zone 110 is provided on one side of the cover plate corresponding to the end of the straight portion 141 away from the connecting portion 142. That is, a connecting portion 142 is provided at one end of the straight portion 141, and the first type of welding zone 110 is provided on one side of the cover plate corresponding to the other end of the straight portion 141.

[0030] In this embodiment, a second type of welding zone 120 is provided on one side of the cover plate corresponding to the intersection of the connecting portion 142 and the straight portion 141. One end of the second type of welding zone 120 contacts the cover plate 132 corresponding to the arc transition portion 143, and the other end of the second type of welding zone 120 is far from the corresponding cover plate 132 and is located on the backplane body 150. In this way, the welding between the cover plate 132 corresponding to the intersection and other structures is very firm.

[0031] Specifically, the above-mentioned second type of welding zone 120 can cover the arc-shaped outer edge of the cover plate 132 corresponding to the arc transition portion 143. Through research, it is found that this part is a position where defects are likely to occur.

[0032] In this embodiment, the first type of welding zone 110 or the second type of welding zone 120 is provided at both ends of a diagonal of the backplane body 150.

[0033] For example, the backplane body 150 is rectangular, and a stepped groove 140 is provided on the backplane body 150. The first type of welding zone 110 or the second type of welding zone 120 is provided at both ends of a diagonal of the backplane body 150.

[0034] With such a setting, the strength at both ends of the diagonal of the backplane body 150 is relatively high. Since the cooling copper backplane often needs to be lifted during installation, that is, one corner of the cooling copper backplane is lifted by a lifting device, which is likely to generate a torque on the cooling copper backplane, and this torque is likely to cause deformation at the end of the diagonal of the cooling copper backplane. However, in this application, due to the provision of the welding zone, the hardness of the welding zone is relatively high, which can effectively resist deformation, that is, the cooling copper backplane is not easily deformed locally to generate some defects. This is also beneficial to improve the service life of the cooling copper backplane.

[0035] Specifically, the stepped groove 140 includes a plurality of linearly arranged portions 141 spaced apart from each other, and the linearly arranged portions 141 are sequentially connected end to end through a plurality of connecting portions 142. On this basis, the first type of welding zone 110 is provided at both ends of a diagonal line of the backplane body 150 respectively.

[0036] In this embodiment, the first type of welding zone 110 is a friction stir welding type welding zone, and the starting end of the first type of welding zone 110 is the end away from the corresponding cover plate. That is, the above-mentioned first type of welding zone 110 is formed by a friction stir joining device.

[0037] Specifically, the welding pin of the friction stir joining device first rotates on the backplane body 150 away from the corresponding cover plate, then gradually approaches the cover plate along the cover plate body, and then fuses the end of the cover plate with the corresponding structure. In this way, the above-mentioned first type of welding zone 110 is formed. Correspondingly, the starting end of the first type of welding zone 110 is the end away from the corresponding cover plate.

[0038] In this embodiment, the second type of welding zone 120 is a friction stir welding type welding zone, and the starting end of the second type of welding zone 120 is the end away from the corresponding cover plate.

[0039] Specifically, the welding pin of the friction stir joining device first rotates on the backplane body 150 away from the corresponding cover plate, then gradually approaches the cover plate along the cover plate body, and then fuses the end of the cover plate with the corresponding structure. In this way, the above-mentioned second type of welding zone 120 is formed. Correspondingly, the starting end of the second type of welding zone 120 is the end away from the corresponding cover plate.

[0040] It should be noted that the shapes of the above-mentioned first type of welding zone 110 and the second type of welding zone 120 can be strip-shaped including a plurality of bent portions, or arc-shaped or other shapes. The first type of welding zone 110 and the second type of welding zone 120 need to have a certain length.

[0041] The specific embodiments described above have further elaborated on the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An industrial cooling copper backplane, comprising a backplane body, a cover plate, and at least one stepped groove extending in a certain direction and provided on the backplane body. Characterized in that, A first type of welding zone is provided on the outer side of the cover plate corresponding to the end of the stepped groove in the extending direction. One end of the first type of welding zone covers the corresponding end of the cover plate, and the other end of the first type of welding zone is away from the corresponding cover plate and located on the backplane body. The stepped groove includes two straight portions and a connecting portion between adjacent two straight portions. The intersection of the connecting portion and the straight portion is an arc transition portion. The first type of welding zone is provided on one side of the cover plate corresponding to the end of the straight portion away from the connecting portion. A second type of welding zone is provided on one side of the cover plate corresponding to the intersection of the connecting portion and the straight portion. One end of the second type of welding zone contacts the cover plate corresponding to the arc transition portion, and the other end of the second type of welding zone is away from the corresponding cover plate and located on the backplane body. The first type of welding zone is a friction stir welding type welding zone, and the starting end of the first type of welding zone is the end away from the corresponding cover plate.

2. The industrial cooling copper backplane according to claim 1, Characterized in that, The first type of welding zone or the second type of welding zone is respectively provided at both ends of a diagonal line of the backplane body.

3. The industrial cooling copper backplane according to claim 1, Characterized in that, The stepped groove includes a plurality of straight portions arranged at intervals, and each straight portion is sequentially connected end to end through a plurality of connecting portions.

4. The industrial cooling copper backplane according to claim 1 or 3, Characterized in that, The first type of welding zone is respectively provided at both ends of a diagonal line of the backplane body.

5. The industrial cooling copper backplane according to claim 1, Characterized in that, The second type of welding zone is a friction stir welding type welding zone, and the starting end of the second type of welding zone is the end away from the corresponding cover plate.

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