U-shaped uniform temperature plate

Abstract

The invention is applicable to the technical field of vapor chambers, and provides a U-shaped vapor chamber which comprises a vapor chamber body, the vapor chamber body is composed of a plane upper cover, a copper net and a stand column lower cover, the copper net is located between the plane upper cover and the stand column lower cover, and a circular stand column and a long-strip-shaped stand column are etched on the end face, close to the copper net, of the stand column lower cover. The circular stand column and the long-strip stand column are flush with the stand column lower cover and abut against the copper net, a gap between the circular stand column and the long-strip stand column is arranged to be a flow channel, through etching manufacturing of the circular stand column and the long-strip stand column, the copper net can be supported, the integrity of the flow channel in the etching end face of the stand column lower cover can be guaranteed, flow resistance is reduced, and the service life of the copper net is prolonged. Compared with a single temperature-uniforming plate main body in the prior art, the temperature-uniforming plate main body provided by the invention has the advantages that the heat dissipation efficiency is high, the heat generated by the working of the battery can be quickly conducted out, and the service life of the battery is further prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of temperature averaging plates, and in particular relates to a U-shaped temperature averaging plate. Background Art

[0002] Lithium batteries are widely used in the electric vehicle industry due to their high energy and high charge and discharge performance. Among them, 18650 lithium batteries (18 mm in diameter and 65 mm in height) are the most common. However, lithium batteries have an operating temperature limit. Exceeding the operating temperature will result in poor charge and discharge efficiency and thermal runaway. The temperature of 18650 lithium batteries will begin to rise sharply at 90°C to 120°C due to chemical instability. The battery module is heated to a certain temperature. When thermal runaway occurs, the gas ejected by the battery will flash and produce flames, burning the battery and even the car. Therefore, thermal management of lithium batteries is very important.

[0003] like Figure 1 As shown, the existing temperature equalizer is generally a flat temperature equalizer, which directly contacts the outer wall of the 18650 battery and dissipates heat from the battery through water cooling. In addition to keeping the battery at a normal operating temperature, this ensures that the temperature uniformity of each battery is consistent. However, such thermal management technology has high cost and assembly difficulty.

[0004] Therefore, in view of the above situation, it is urgent to develop a U-shaped temperature equalizing plate to overcome the shortcomings in current practical applications. Summary of the invention

[0005] In view of the shortcomings of the prior art, an object of the embodiments of the present invention is to provide a U-shaped temperature equalizing plate to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A U-shaped temperature equalizing plate comprises a temperature equalizing plate body, wherein the temperature equalizing plate body is composed of a plane upper cover, a copper mesh and a column lower cover, wherein the copper mesh is located between the plane upper cover and the column lower cover, wherein the plane upper cover and the column lower cover are fixedly connected and seal the copper mesh, wherein the end surface of the column lower cover close to the copper mesh is etched with a circular column and a long column, wherein the circular column and the long column are equidistantly arranged on the column lower cover, wherein the circular column and the long column are flush with the column lower cover and are in conflict with the copper mesh, and wherein the gap between the circular column and the long column is set as a flow channel.

[0007] As a further technical solution of the present invention, the thickness of the column upper cover is 0.3 mm.

[0008] As a further technical solution of the present invention, the height of the circular column and the long column is 0.2 mm.

[0009] As a further technical solution of the present invention, the thickness of the planar upper cover is 0.2 mm.

[0010] As a further technical solution of the present invention, a groove is etched on one side of the planar upper cover close to the copper mesh, the groove is used for installing the copper mesh, and the etching thickness of the groove is consistent with the thickness of the copper mesh.

[0011] As a further technical solution of the present invention, the depth of the groove and the thickness of the copper mesh are both 0.05 mm.

[0012] As a further technical solution of the present invention, one end of the plane upper cover and the column lower cover are both provided with ear plates, and the ear plates are integrally formed with the plane upper cover and the column lower cover.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The gap between the circular column and the long column is set as a flow channel. By etching the circular column and the long column, not only can the copper mesh be supported and the stability of the overall structure be effectively improved, but also during the bending process of the lower cover of the column, the integrity of the etched end face flow channel of the lower cover of the column can be ensured to reduce the flow resistance, so that the heat generated by the battery can flow smoothly in the preset flow channel, thereby increasing its contact area with the outside world and quickly conducting away the accumulated heat. Compared with the single temperature equalizing plate body in the prior art, the temperature equalizing plate body in the present invention is bent into a U shape, with high heat dissipation efficiency, and can quickly conduct away the heat generated by the battery. It can also achieve the heat dissipation effect of a flat temperature equalizing plate, meet the heat dissipation requirements of 18650 batteries, and thus extend the service life of 18650 batteries.

[0014] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The following is a schematic diagram of the installation of a U-shaped temperature equalizing plate provided by the prior art.

[0016] Figure 2 This is a schematic diagram of the installation of the U-shaped temperature equalizing plate provided by the present invention.

[0017] Figure 3 This is an enlarged view of the horizontal cross section of the U-shaped temperature equalizing plate provided by the present invention.

[0018] Figure 4 for Figure 3 Schematic diagram of the structure with the mid-plane cover unfolded.

[0019] Figure 5 for Figure 3 Schematic diagram of the structure with the lower cover of the center pillar unfolded.

[0020] Figure numerals: 1-heat balancing plate body, 2-battery, 3-plane upper cover, 4-column lower cover, 5-copper mesh, 6-groove, 7-circular column, 8-long column, 9-ear plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0023] like Figures 1 to 5 As shown, a U-shaped temperature equalizing plate provided as an embodiment of the present invention includes a temperature equalizing plate body 1, the temperature equalizing plate body 1 is composed of a plane upper cover 3, a copper mesh 5 and a column lower cover 4, the copper mesh 5 is located between the plane upper cover 3 and the column lower cover 4, the plane upper cover 3 and the column lower cover 4 are fixedly connected and seal the copper mesh 5, the end surface of the column lower cover 4 close to the copper mesh 5 is etched with a circular column 7 and a long column 8, the circular column 7 and the long column 8 are equidistantly arranged on the column lower cover 4, the circular column 7 and the long column 8 are flush with the column lower cover 4 and conflict with the copper mesh 5, the circular column 7 and the long column The gap between 8 is set as a flow channel. By etching the circular column 7 and the long column 8, not only can the copper mesh 5 be supported and the stability of the overall structure be effectively improved, but also during the bending process of the column lower cover 4, the integrity of the etched end face flow channel of the column lower cover 4 can be ensured to reduce the flow resistance, so that the heat generated by the battery 2 can flow smoothly in the preset flow channel, thereby increasing its contact area with the outside world and quickly conducting away the accumulated heat. Compared with the single temperature equalizing plate main body 1 in the prior art, the temperature equalizing plate main body 1 in the present invention has high heat dissipation efficiency, can quickly conduct away the heat generated by the battery 2 during operation, and thus extend the service life of the battery 2.

[0024] like Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, the thickness of the column upper cover is 0.3 mm.

[0025] like Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, the height of the circular column 7 and the long column 8 is 0.2 mm.

[0026] like Figure 3 and Figure 4 As shown, as a preferred embodiment of the present invention, the thickness of the planar upper cover 3 is 0.2 mm.

[0027] like Figure 3 and Figure 4 As shown, as a preferred embodiment of the present invention, a groove 6 is etched on one side of the planar upper cover 3 close to the copper mesh 5, the groove 6 is used for installing the copper mesh 5, and the etching thickness of the groove 6 is consistent with the thickness of the copper mesh 5.

[0028] like Figure 3 and Figure 4 As shown, as a preferred embodiment of the present invention, the depth of the groove 6 and the thickness of the copper mesh 5 are both 0.05 mm.

[0029] like Figures 2 to 5 As shown, as a preferred embodiment of the present invention, one end of the plane upper cover 3 and the column lower cover 4 are provided with an ear plate 9, and the ear plate 9 is integrally formed with the plane upper cover 3 and the column lower cover 4. The ear plate 9 can not only increase the connection stability between the temperature averaging plate body 1 and the battery 2, but also increase the contact area between the temperature averaging plate body 1 and the battery 2, thereby improving the heat dissipation efficiency and heat dissipation quality of the temperature averaging plate.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A U-shaped temperature equalizing plate, comprising a temperature equalizing plate body, the temperature equalizing plate body consisting of a plane upper cover, a copper mesh and a column lower cover, the copper mesh is located between the plane upper cover and the column lower cover, the plane upper cover and the column lower cover are fixedly connected and seal the copper mesh, circular columns and long columns are etched on the end surface of the column lower cover close to the copper mesh, the circular columns and long columns are equidistantly arranged on the column lower cover, the circular columns and long columns are flush with the column lower cover and conflict with the copper mesh, and the gap between the circular columns and the long columns is set as a flow channel.

2. The U-shaped temperature equalizing plate according to claim 1, characterized in that: The thickness of the column upper cover is 0.3 mm.

3. The U-shaped temperature equalizing plate according to claim 1, characterized in that: The height of the circular column and the long column is 0.2 mm.

4. The U-shaped temperature equalizing plate according to claim 1, characterized in that: The thickness of the planar upper cover is 0.2 mm.

5. The U-shaped temperature equalizing plate according to claim 4, characterized in that: A groove is etched on one side of the flat upper cover close to the copper mesh, the groove is used for installing the copper mesh, and the etching thickness of the groove is consistent with the thickness of the copper mesh.

6. The U-shaped temperature equalizing plate according to claim 5, characterized in that: The depth of the groove and the thickness of the copper mesh are both 0.05 mm.

7. The U-shaped temperature equalizing plate according to claim 1, characterized in that: One end of the plane upper cover and the column lower cover are both provided with ear plates, and the ear plates are integrally formed with the plane upper cover and the column lower cover.

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