Double-shell heat-preservation liquid-cooling integrated box

Abstract

The utility model discloses a double-shell thermal insulation liquid cooling integrated box which comprises a first shell, a first pipe nozzle, a runner plate, fins, a second shell and a second pipe nozzle. And a vacuum closed cavity is formed between the first shell and the second shell. The runner plate and the fins are arranged in the closed cavity, one surface of the runner plate is tightly attached to the concave surface of the first shell, one surface of each fin is tightly attached to the concave surface of the second shell, and the other surface of each fin is tightly attached to the runner plate, so that the supporting effect is achieved, and the runner is protected against extrusion. And the first pipe nozzle is arranged on the first shell and is communicated with the runner inlet and the runner outlet of the runner plate. And the second pipe nozzle is arranged on the second shell as an interface for vacuumizing and is communicated with the closed cavity. According to the utility model, the manufacturing process is simple, the processes of gluing sealing, riveting and the like are simplified, the material cost and the manufacturing cost are reduced, the processing efficiency is improved, and the structure strength, the sealing performance and the heat preservation performance are enough.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to a double-shell integrated local heat-insulating cold box. Background Art

[0002] Energy storage technology helps the global energy transformation and is the key to achieving the "dual carbon" goal. With the popularity of energy storage devices such as lithium-ion batteries, boxes with insulation on one side and battery cooling on the other side have received widespread attention. The box is mainly used to accommodate energy storage devices and ensure good heat dissipation on the battery side, insulation on the flow channel side, and sealing of the entire box.

[0003] In the prior art, the energy storage box is made of multiple independent profiles and plates fixed by welding. In order to ensure the sealed connection between the side wall and the bottom wall, stir friction welding and argon arc welding are usually used. However, these methods have the problem of low efficiency, which leads to reduced assembly efficiency of the energy storage box, and stir friction welding and argon arc welding will generate local heat, resulting in low flatness of the product, affecting the sealing performance and heat dissipation performance. In addition, complex processes such as hot melting, rotary tapping, riveting, and gluing are required to ensure the sealing of the box. In particular, in order to ensure that the energy storage device can work normally at low temperatures, thermal insulation cotton is usually pasted on the flow channel side. The above scheme leads to the current energy storage box having problems such as complex structure, low assembly efficiency, poor sealing, poor thermal insulation and high cost.

[0004] Therefore, it is urgent to design an integrated energy storage battery box structure to simplify the assembly and welding processes to solve the above problems. Summary of the invention

[0005] The utility model aims to provide a double-shell insulated liquid-cooled integrated box with a simple manufacturing process, which simplifies processes such as gluing and sealing, riveting, etc., reduces material costs and manufacturing costs, improves processing efficiency, and ensures that the liquid-cooled integrated box has sufficient structural strength, sealing performance and thermal insulation performance.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A double-shell thermal insulation liquid cooling integrated box, comprising:

[0008] A first shell and a second shell, wherein a closed cavity forming a vacuum region is formed between the first shell and the second shell after brazing, and the first shell and the second shell both include a concave surface for forming a liquid-cooling side cavity;

[0009] A flow channel plate, wherein the flow channel plate is disposed in the closed cavity, and one surface of the flow channel plate is in close contact with the concave surface of the first shell;

[0010] A fin, wherein the fin is arranged in the closed cavity, and one surface of the fin is in close contact with the concave surface of the second shell, and the other surface of the fin is in close contact with the flow channel plate;

[0011] a first nozzle, the first nozzle being disposed on the first housing and communicating with a flow channel inlet and an outlet of the flow channel plate;

[0012] The second nozzle is used as an interface for extracting vacuum and is arranged on the second shell and communicated with the sealed cavity.

[0013] As a solution, a solder layer is provided on the surface of the first shell, and the solder layer is located on the surface that is in contact with the first shell and the second shell.

[0014] As a solution, the outer contours of the first shell and the second shell are rectangular, and the four sides of the rectangle constitute the joint position of the first shell and the second shell.

[0015] As a solution, the flow channel plate is a multi-pass liquid cooling plate.

[0016] As a solution, the second nozzle is connected to a vacuum valve.

[0017] Compared with the prior art, the double-shell insulated liquid-cooled integrated box of the utility model has a simple structure, which effectively simplifies the assembly process between the various parts, converts the existing multiple and various types of welding between the side walls of the box and the cold plate into an integrated structure for one-time welding, reduces the processes of gluing, sealing, riveting, etc., reduces material costs, improves manufacturability, and greatly reduces manufacturing costs. On the basis of ensuring the strength of the shell structure, the flow channel plate (liquid cooling plate), box body, and insulation material are integrated into one, and the sealing and thermal insulation properties are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of a double-shell insulated liquid-cooled integrated box;

[0019] Figure 2 This is the assembly diagram of the double-shell thermal insulation liquid cooling integrated box;

[0020] Figure 3 It is a cross-sectional view of a double-shell thermal insulation liquid cooling integrated box;

[0021] Figure 4 is a partial cross-sectional view of the cold plate along the center line of the first nozzle;

[0022] Figure 5 is a partial cross-sectional view of the cold plate along the center line of the second nozzle;

[0023] In the figure: 1-first shell, 2-first nozzle, 3-flow channel plate, 4-fin, 5-second shell, 6-second nozzle, 7-vacuum layer, 8-liquid cooling side, 9-insulation side. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but it should not be understood that the scope of the subject matter described in the present invention is limited to the following embodiments. Without departing from the above-mentioned technical ideas of the present invention, various modifications, substitutions and changes made according to the common technical knowledge and customary means in the field are included in the scope of the present invention.

[0025] like Figure 1 to Figure 5 As shown, the double-shell insulated liquid-cooled integrated box includes a first shell 1, a first nozzle 2, a flow channel plate 3, a fin 4, a second shell 5 and a second nozzle 6. After the first shell 1 and the second shell 5 are brazed, a closed cavity forming a vacuum area is formed between the two. The first shell 1 and the second shell 5 both include a recessed surface for forming a liquid-cooled side cavity; the flow channel plate 3 is arranged in the closed cavity, and one surface of the flow channel plate 3 is in close contact with the recessed surface of the first shell 1; the fin 4 is arranged in the closed cavity, and one surface of the fin 4 is in close contact with the recessed surface of the second shell 5, and the other surface of the fin 4 is in close contact with the flow channel plate 3; the first nozzle 2 is arranged on the first shell 1 and is connected to the flow channel inlet and outlet of the flow channel plate 3; the second nozzle 6 is arranged on the second shell 5 as an interface for extracting vacuum and is connected to the closed cavity.

[0026] The above design has the following features:

[0027] First, the first shell 1 and the second shell 5 with single-sided solder coating are designed as an overall recessed shell structure to reduce the side wall structure of the box body independent profile welding, realize integrated welding sealing, and the first shell 1 and the second shell 5 are spliced ​​to form a sandwich cavity, and then vacuum pumped to obtain a vacuum layer 7 to achieve a thermal insulation effect.

[0028] Second, the flow channel plate 3 and the fin 4 are arranged in the vacuum layer 7 between the first shell 1 and the second shell 5. The fin 4 serves as a support to protect the flow channel and the bottom of the second shell 5 from being squeezed and deformed.

[0029] Third, a flow channel plate 3 is designed between the first shell 1 and the second shell 5. The flow channel plate 3 uses a common liquid cooling plate to ensure the cooling effect of the battery. Holes are opened on the first shell 1 and the second shell 5 for welding the first nozzle 2 so that the coolant can flow directly into and out of the flow channel of the flow channel plate 3.

[0030] Fourth, a hole is opened on the second shell 5 for welding the second nozzle 6, which serves as a welding exhaust hole and a mounting socket for the vacuum valve.

[0031] The above structural design ensures that the first shell 1, the second shell 5, the flow channel plate 3, the first nozzle 2, the second nozzle 6 and the fin 4 of the entire box can be welded in an integrated manner, and the box sealing, battery side cooling, flow channel side insulation and other effects can be achieved after one welding is completed. Figure 2 As shown, the entire box is divided into a liquid cooling side 8 and a heat preservation side 9.

[0032] The utility model optimizes the design of the traditional stamped cold plate structure into a double-shell sandwiched flow channel plate structure, realizing the purpose of integrating the traditional cold plate, box, insulation cotton, etc. into one. The double-shell integrated local insulation liquid cooling box is composed of a first shell 1, a second shell 5, a flow channel plate 3, a fin 4, a first nozzle 2 and a second nozzle 6 (in conjunction with a vacuum valve). A vacuum-sealed cavity structure is formed between the first shell 1 and the second shell 5, and the vacuum valve and the second nozzle 6 are used to evacuate the sealed cavity to replace the insulation cotton in the prior art device. The utility model not only simplifies the assembly and welding process, but also significantly reduces the material cost required for profiles, insulation cotton, etc., and also simplifies the processes of sealing, riveting, and pasting. The utility model enables the entire box to be integrated and brazed to achieve functions such as sealing, insulation, and cooling, thereby reducing the weight and cost of the entire energy storage system.

[0033] The utility model integrates the originally independent cold plates and battery box side wall profiles, thermal insulation cotton, etc. in the energy storage box into one, and through the box structure design, ensures the structural strength, sealing and thermal insulation of the box, improves the manufacturability, and greatly reduces the production process cost and material cost.

[0034] The above is the main concept of the present invention, and any double-shell thermal insulation liquid cooling integrated box designed according to the concept of the present invention falls within the protection scope of the present invention.

Claims

1. A double-shell thermal insulation liquid cooling integrated box, characterized in that: include: A first shell (1) and a second shell (5), wherein after the first shell (1) and the second shell (5) are brazed, a closed cavity with a vacuum region is formed between the first shell (1) and the second shell (5), and the first shell (1) and the second shell (5) both comprise a concave surface for forming a liquid-cooling side cavity; A flow channel plate (3), wherein the flow channel plate (3) is arranged in the closed cavity, and one surface of the flow channel plate (3) is in close contact with a recessed surface of the first shell (1); A fin (4), wherein the fin (4) is arranged in the closed cavity, and one surface of the fin (4) is in close contact with the concave surface of the second shell (5), and the other surface of the fin (4) is in close contact with the flow channel plate (3); A first nozzle (2), the first nozzle (2) being arranged on the first shell (1) and being connected to a flow channel inlet and an outlet of the flow channel plate (3); A second nozzle (6), the second nozzle (6) being provided on the second shell (5) as an interface for extracting vacuum and being communicated with the sealed cavity.

2. A double-shell thermal insulation liquid cooling integrated box according to claim 1, characterized in that: The surface of the first shell (1) has a solder layer, and the solder layer is located on the surface that is in contact with the first shell (1) and the second shell (5).

3. A double-shell thermal insulation liquid cooling integrated box according to claim 1, characterized in that: The outer contours of the first shell (1) and the second shell (5) are rectangular, and the four sides of the rectangle constitute the joint position of the first shell (1) and the second shell (5).

4. A double-shell thermal insulation liquid cooling integrated box according to claim 1, characterized in that: The flow channel plate (3) is a multi-pass liquid cooling plate.

5. The double-shell thermal insulation liquid cooling integrated box according to claim 1, characterized in that: The second nozzle (6) is connected to a vacuum valve.

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