Integrated liquid-cooled battery box

Abstract

The utility model discloses an integrated liquid-cooled battery box. The integrated liquid-cooled battery box comprises a battery box frame, the liquid cooling plate is arranged on the inner side of the battery box body frame; the blocking strip assembly is arranged at the end part of the liquid cooling plate; the water nozzle assembly is arranged at the end part of the liquid cooling plate; and the liquid cooling plate is matched with the blocking strip assembly and is combined with the water nozzle assembly to form a liquid cooling plate assembly which is integrated and fixed on the battery box body frame. Before the liquid cooling plate assembly is welded with the box body frame, the liquid cooling plate assembly is used as an independent part for tailor welding, the air tightness is maintained, the unqualified air tightness of the liquid cooling flow channel after the box body assembly can be avoided, the air tightness detection process is advanced, the material scrapping is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy battery boxes, and particularly relates to an integrated liquid-cooled battery box. Background Art

[0002] Aluminum extrusion boxes and liquid-cooled plates are widely used in the power battery pack and energy storage industries. Aluminum extrusions have the characteristics of good structural strength, simple extrusion process, weldability, and corrosion resistance. Profiles with different cross-sections can be connected by friction stir welding. The integrated liquid-cooled plate battery box formed by combination has the advantages of simple structure, high reliability, and low cost.

[0003] In the prior art, the aluminum profile liquid-cooled plate is usually welded to the frame and then the plug strip is welded; or the frame and the plug strip are integrated, then welded to the liquid-cooled plate, and finally the airtightness is performed after the box assembly welding is completed. The first-pass rate of this method for airtightness detection is low, the repair is troublesome, the defective rate also increases, and the scrap rate of the frame materials increases. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art. To achieve the above purpose, an integrated liquid-cooled battery box is adopted to solve the problems put forward in the above background art.

[0005] An integrated liquid-cooled battery box includes:

[0006] A battery box frame;

[0007] A liquid-cooled plate arranged inside the battery box frame;

[0008] A plug strip assembly arranged at the end of the liquid-cooled plate; and

[0009] A water nozzle assembly arranged at the end of the liquid-cooled plate;

[0010] The liquid-cooled plate cooperates with the plug strip assembly and combines with the water nozzle assembly to form a liquid-cooled plate assembly, which is integrally fixed to the battery box frame.

[0011] As a further scheme of the utility model: The battery box frame includes a left longitudinal beam, a front cross beam, a right longitudinal beam, and a rear cross beam.

[0012] As a further scheme of the utility model: The left longitudinal beam, the front cross beam, the right longitudinal beam, the rear cross beam, the mounting bushing, and the internal thread lifting bushing are sequentially connected by welding to form a rectangular frame.

[0013] As a further scheme of the utility model: A front panel is arranged at the front end of the front cross beam.

[0014] As a further scheme of the utility model: Longitudinal beam sealing plates are arranged at both ends of the left longitudinal beam and the right longitudinal beam.

[0015] As a further solution of the present utility model: The plug strip assembly includes a first plug strip disposed at one end of the liquid cooling plate, and a second plug strip disposed at the other end of the liquid cooling plate.

[0016] As a further solution of the present utility model: The water nozzle assembly includes a first water nozzle disposed at the end of the first plug strip, and a second water nozzle.

[0017] As a further solution of the present utility model: The first water nozzle and the second water nozzle are disposed on the liquid cooling plate by welding.

[0018] As a further solution of the present utility model: The inside of the liquid cooling plate adopts an S-shaped flow channel.

[0019] Compared with the prior art, the present utility model has the following technical effects:

[0020] Adopting the above technical solution, before welding with the box body frame, the liquid cooling plate assembly is welded as an independent component and subjected to airtight detection. This can avoid the airtightness of the liquid cooling flow channel being unqualified after the box body assembly, advance the airtight detection process, reduce material scrapping, and improve production efficiency. The aluminum profile box body frame and the aluminum profile liquid cooling plate are joined by friction stir welding, greatly improving the mechanical structure strength and stiffness. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following will describe in detail the specific embodiments of the present utility model with reference to the drawings:

[0022] Figure 1 It is an exploded view of the liquid cooling plate assembly of the disclosed embodiment of the present application;

[0023] Figure 2 It is an exploded view of the battery box body of the disclosed embodiment of the present application;

[0024] Figure 3 It is an overall schematic diagram of the liquid cooling plate assembly of the disclosed embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of the battery box body frame of the disclosed embodiment of the present application;

[0026] Figure 5 It is an internal schematic diagram of the liquid cooling plate of the disclosed embodiment of the present application.

[0027] In the figure: 1. Liquid cooling plate; 2. Water nozzle assembly; 21. First water nozzle; 22. Second water nozzle; 3. First plug strip; 4. Second plug strip; 5. Left longitudinal beam; 6. Installation bushing; 7. Front cross beam; 8. Longitudinal beam sealing plate; 9. Front panel; 10. Liquid cooling plate assembly; 11. Right longitudinal beam; 12. Internal thread lifting bushing; 13. Rear cross beam. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1 and Figure 2 , in the embodiments of the present invention, an integrated liquid-cooled battery box body includes:

[0030] A battery box body frame;

[0031] A liquid-cooling plate 1 arranged inside the battery box body frame;

[0032] A plug strip assembly arranged at the end of the liquid-cooling plate 1; and

[0033] A water nozzle assembly 2 arranged at the end of the liquid-cooling plate 1;

[0034] In this embodiment, as Figure 3 shown, the figure is a schematic diagram of the overall liquid-cooling plate assembly. The liquid-cooling plate 1 cooperates with the plug strip assembly and combines with the water nozzle assembly 2 to form a liquid-cooling plate assembly 10, which is integrally fixed to the battery box body frame.

[0035] Specifically, the aluminum profile liquid-cooling plate is first connected to the front and rear plug strips through friction stir welding and side manual repair welding to form a liquid-cooling plate assembly. As an independent sub-part, the liquid-cooling plate assembly is subjected to airtight inspection, reducing the difficulty and cost of repair and not involving the scrapping of frame materials.

[0036] Using the liquid-cooling plate 1 with qualified airtightness, it is connected to the box body frame through friction stir welding, integrating the battery pack box body and the liquid cooling into one, with a simple structure and high mechanical strength performance.

[0037] In this embodiment, as Figure 4 shown, the figure is a schematic diagram of the battery box body frame; the battery box body frame includes a left longitudinal beam 5, a front cross beam 7, a right longitudinal beam 11, and a rear cross beam 13.

[0038] In this embodiment, the left longitudinal beam 5, the front cross beam 7, the right longitudinal beam 11, the rear cross beam 13, the mounting bushing 6, and the internal thread lifting bushing 12 are fixedly connected in sequence by welding to form a rectangular frame.

[0039] In this embodiment, a front panel 9 is provided at the front end of the front cross beam 7. They are two different sub-parts. After the battery box body frame and the liquid-cooling plate are friction stir welded, they are then welded to the front panel 9.

[0040] In this embodiment, longitudinal beam sealing plates 8 are provided at both ends of the left longitudinal beam 5 and the right longitudinal beam 11.

[0041] In this embodiment, the plug strip assembly includes a first plug strip 3 provided at one end of the liquid cooling plate 1 and a second plug strip 4 provided at the other end of the liquid cooling plate 1.

[0042] In this embodiment, the water nozzle assembly 2 includes a first water nozzle 21 provided at the end of the first plug strip 3 and a second water nozzle 22.

[0043] In this embodiment, the first water nozzle 21 and the second water nozzle 22 are provided on the liquid cooling plate 1 by welding, and preferably, the argon arc welding method is adopted.

[0044] In this embodiment, as Figure 5 shown, the figure is a schematic internal view of the liquid cooling plate. The inside of the liquid cooling plate 1 adopts an S-shaped flow channel. Specifically, the liquid cooling plate forms an S-shaped flow channel by machining the internal cavity. The upper and lower large surfaces of the first plug strip 3 and the second plug strip 4 provided at the other end of the liquid cooling plate 1 in contact with the liquid cooling plate 1 are welded by friction stir welding, and the side edges are welded manually. After completion, the two water nozzles are welded by argon arc welding, and then transferred to airtightness testing. After the airtightness testing is qualified, the welding process of the liquid cooling plate assembly is completed.

[0045] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated liquid-cooled battery box, characterized in that: include: Battery box frame; A liquid cooling plate disposed inside the battery box frame; A blocking strip assembly disposed at the end of the liquid cooling plate; as well as A water nozzle assembly disposed at the end of the liquid cooling plate; The liquid cooling plate cooperates with the blocking strip assembly and the water nozzle assembly to form a liquid cooling plate assembly, which is integrated and fixed to the battery box frame.

2. The integrated liquid-cooled battery box according to claim 1, characterized in that: The battery box frame includes a left longitudinal beam, a front cross beam, a right longitudinal beam, and a rear cross beam.

3. The integrated liquid-cooled battery box according to claim 2, characterized in that: The left longitudinal beam, the front cross beam, the right longitudinal beam, the rear cross beam, the mounting bushing, and the inner thread hoisting bushing are connected in sequence by welding to form a rectangular frame.

4. The integrated liquid-cooled battery box according to claim 3, characterized in that: A front panel is arranged at the front end of the front cross beam.

5. The integrated liquid-cooled battery box according to claim 2, characterized in that: Both ends of the left longitudinal beam and the right longitudinal beam are provided with longitudinal beam sealing plates.

6. The integrated liquid-cooled battery box according to claim 1, characterized in that: The blocking bar assembly includes a first blocking bar arranged at one end of the liquid cooling plate, and a second blocking bar arranged at the other end of the liquid cooling plate.

7. The integrated liquid-cooled battery box according to claim 6, characterized in that: The water nozzle assembly includes a first water nozzle arranged at the end of the first blocking strip, and a second water nozzle.

8. The integrated liquid-cooled battery box according to claim 7, characterized in that: The first water nozzle and the second water nozzle are arranged on the liquid cooling plate by welding.

9. The integrated liquid-cooled battery box according to claim 8, characterized in that: The liquid cooling plate has an S-shaped flow channel inside.

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