An integrated die-cast CTP liquid-cooled energy storage box

Abstract

This utility model discloses an integrated die-cast CTP liquid-cooled energy storage tank, including a liquid-cooled base plate and side end plates connected to both ends of the liquid-cooled base plate. The liquid-cooled base plate and the side end plates are integrally die-cast. A liquid-cooling channel is provided on the outer bottom of the liquid-cooled base plate, and a welded base plate covering the liquid-cooling channel is welded to the bottom surface of the liquid-cooled base plate. Multiple reinforcing steel bars are detachably connected between the two side end plates by bolts. In this integrated die-cast CTP liquid-cooled energy storage tank, the liquid-cooled base plate and the side end plates are integrally die-cast. Furthermore, in this integral structure, the liquid-cooling channel is also directly formed during die casting, resulting in higher overall structural integrity and improved product performance.

Description

Technical Field

[0001] This utility model relates to the field of new energy storage boxes, specifically to an integrated die-cast CTP liquid-cooled energy storage box. Background Technology

[0002] Traditional energy storage battery enclosures generally adopt a manufacturing mode of "profile splicing main body + cell module assembly + post-welding liquid cooling plate and base plate", which has prominent problems such as complicated process, poor sealing and structural redundancy, making it difficult to meet the current development needs of high energy density and low cost energy storage systems.

[0003] As described in patent CN220830053U, a power and energy storage battery enclosure includes a enclosure, a frame assembly, and a water-cooling plate. The frame assembly includes an outer frame boss and several frame beams. A first reinforcing rib is provided along the inner edge of the outer frame boss, and both ends of the frame beams are fixedly connected to the first reinforcing ribs. A second reinforcing rib is provided along the outer edge of the frame beams. The water-cooling plate is disposed between the enclosure and the frame assembly, and the second reinforcing ribs are in contact with the surface of the water-cooling plate. Second reinforcing ribs are provided on both sides of the frame beams, which are in contact with the water-cooling plate, thereby improving the overall strength of the frame beams and supporting the water-cooling plate, thus enhancing the structural stability of the water-cooling plate.

[0004] The power and energy storage battery housing is fixedly connected to the housing, outer frame boss, and water cooling plate by rivet nuts, resulting in poor overall integrity and cumbersome process. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated die-cast CTP liquid-cooled energy storage box. The liquid-cooled bottom plate and the side plates at both ends of the integrated die-cast CTP liquid-cooled energy storage box are integral die-cast structures. At the same time, the liquid-cooled flow channels in this integral structure are also directly formed in the die-casting process, which makes the overall structure of the box more robust and improves the product performance.

[0006] To achieve the above objectives, this utility model provides an integrated die-cast CTP liquid-cooled energy storage tank, including a liquid-cooled base plate and side end plates connected to both ends of the liquid-cooled base plate. The liquid-cooled base plate and the side end plates at both ends are integral die-cast structures. A liquid-cooled flow channel is provided on the outer bottom of the liquid-cooled base plate. A welded base plate covering the liquid-cooled flow channel is welded to the bottom surface of the liquid-cooled base plate. Multiple reinforcing steel bars are detachably connected between the two side end plates by bolts.

[0007] Preferably, the side end plate includes a plurality of square tubes and flat plates spaced apart, and reinforcing ribs are provided between the left and right edges of the outer side of the square tubes and the liquid-cooled base plate.

[0008] Preferably, the liquid-cooled base plate is provided with an extension plate along the circumference, and a supporting rib is provided between the extension plate and the side of the liquid-cooled base plate, and a plurality of mounting holes are provided on the extension plate.

[0009] Preferably, the reinforcing steel strip has L-shaped or T-shaped connecting parts at both ends; the connecting parts have through holes, and the side end plate has screw holes corresponding to the through holes, with screw holes screwed into the through holes; the side end plate has an insertion slot in the middle that corresponds to the T-shaped connecting part and can be used to insert the reinforcing steel strip connected to the T-shaped connecting part.

[0010] Preferably, the outer bottom of the liquid-cooled base plate is provided with a recessed groove embedded in the welding base plate.

[0011] Preferably, the end of the liquid-cooled base plate is provided with an inlet nozzle and an outlet nozzle that are respectively connected to the inlet end and the outlet end of the liquid-cooled flow channel.

[0012] Preferably, one end of the liquid-cooled base plate protrudes a certain distance from the adjacent side end plate, and the upper surface of the protruding part of the liquid-cooled base plate is provided with a protruding post, and the main body is provided with a threaded hole.

[0013] According to the above technical solution, this utility model provides an integrated die-cast CTP liquid-cooled energy storage box, including a liquid-cooled base plate and side end plates connected to both ends of the liquid-cooled base plate. The liquid-cooled base plate and the side end plates at both ends are integral die-cast structures. A liquid-cooled flow channel is provided on the outer bottom of the liquid-cooled base plate. A welded base plate covering the liquid-cooled flow channel is welded to the bottom surface of the liquid-cooled base plate. Multiple reinforcing steel bars are detachably connected between the two side end plates by bolts.

[0014] The integrated die-cast CTP liquid-cooled energy storage tank has the following advantages: The liquid-cooled bottom plate and the side plates at both ends of the integrated die-cast CTP liquid-cooled energy storage tank in this utility model are integral die-cast structures. At the same time, the liquid-cooled flow channel in this integral structure is also directly formed in the die-casting process, realizing the integrated CTP design, fundamentally simplifying the manufacturing process and comprehensively improving product performance.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the bottom structure of a preferred embodiment of the present invention;

[0019] Figure 3 yes Figure 2 Schematic diagram of CC cross-section structure;

[0020] Figure 4 yes Figure 1 A magnified schematic diagram of a portion of region A in the middle;

[0021] Figure 5 yes Figure 1 A magnified schematic diagram of a portion of region B in the middle;

[0022] Figure 6 yes Figure 3 A magnified schematic diagram of the structure of region D in the middle.

[0023] Explanation of reference numerals in the attached figures

[0024] 1-Liquid-cooled base plate; 2-Reinforcing steel strip; 3-Liquid-cooled flow channel; 4-Mounting hole; 5-T-type connection; 6-L-type connection; 7-Side end plate; 8-Welded base plate; 9-Square tube; 10-Flat plate; 11-Reinforcing rib; 12-Insert; 13-Outer extension plate; 14-Supporting rib; 15-Inlet water nozzle; 16-Outlet water nozzle. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0026] In this utility model, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0027] See Figure 1-6 The integrated die-cast CTP liquid-cooled energy storage tank shown includes a liquid-cooled base plate 1 and side end plates 7 connected to both ends of the liquid-cooled base plate 1. The liquid-cooled base plate 1 and the side end plates 7 at both ends are integral die-cast structures. A liquid-cooled flow channel 3 is provided on the outer bottom of the liquid-cooled base plate 1. A welded base plate 8 covering the liquid-cooled flow channel 3 is welded to the bottom surface of the liquid-cooled base plate 1. Multiple reinforcing steel bars 2 are detachably connected between the two side end plates 7 by bolts.

[0028] Through the implementation of the above technical solution, the liquid cooling bottom plate 1 and the side end plates 7 at both ends in the integrated die-cast CTP liquid cooling energy storage box of this utility model are integral die-cast structures. At the same time, in this integral structure, the liquid cooling channel 3 is also directly formed in the die casting, realizing the integrated design of CTP, fundamentally simplifying the manufacturing process and comprehensively improving product performance.

[0029] In this embodiment, the side plate 7 includes a plurality of square tubes 9 and a flat plate 10 spaced apart. Reinforcing ribs 11 are provided between the left and right edges of the outer side of the square tubes 9 and the liquid-cooled base plate 1. This combined design creates a vertical recess on the inner side of the flat plate 10, which facilitates airflow on the side of the battery cell when it is placed inside, thus aiding in heat dissipation.

[0030] In this embodiment, the liquid-cooled base plate 1 is provided with an extension plate 13 along its circumference, and a support rib 14 is provided between the extension plate 13 and the side of the liquid-cooled base plate 1. The extension plate 13 is provided with a plurality of mounting holes 4. This arrangement provides a connection method between the liquid-cooled base plate 1 and the vehicle frame, which is to use bolts to pass through the mounting holes 4 and the corresponding holes on the vehicle frame and then lock them in place.

[0031] In this embodiment, the reinforcing steel strip 2 has L-shaped connecting portions 6 or T-shaped connecting portions 5 at both ends; the connecting portions have through holes, and the side end plate 7 has screw holes corresponding to the through holes, with screw holes screwed into the through holes; the side end plate 7 has an insertion port 12 in the middle that corresponds to the T-shaped connecting portion 5 and allows the reinforcing steel strip 2 connected to the T-shaped connecting portion 5 to be inserted. This arrangement provides a detachable installation method for the reinforcing steel strip 2, for example, using three reinforcing steel strips 2, with the middle reinforcing steel strip 2 having T-shaped connecting portions 5 at both ends, and the end reinforcing steel strips 2 having L-shaped connecting portions 6.

[0032] In this embodiment, the outer bottom of the liquid-cooled base plate 1 is provided with a recessed groove for embedding the welding base plate 8. This arrangement allows the welding base plate 8 to be fully embedded in the outer bottom of the liquid-cooled base plate 1, sealing the bottom surface of the liquid-cooled flow channel 3 and making the bottom surface of the liquid-cooled base plate 1 flat.

[0033] In this embodiment, the end of the liquid-cooled base plate 1 is provided with an inlet nozzle 15 and an outlet nozzle 16, which are respectively connected to the inlet end and the outlet end of the liquid-cooled flow channel 3. The liquid-cooled flow channel 3 preferably adopts a serpentine flow channel with the same inlet and outlet, or it can adopt a combination of a serpentine flow channel and a return flow channel.

[0034] In this embodiment, one end of the liquid-cooled base plate 1 protrudes a certain distance from the adjacent side end plate 7. A protruding post is provided on the upper surface of the protruding portion of the liquid-cooled base plate 1, and a threaded hole is provided on the main body. This gap is used to install a battery management element, which is fixed by bolts passing through the corresponding mounting portion of the battery management element and screwing it into the threaded hole.

[0035] This integrated die-cast CTP liquid-cooled energy storage enclosure eliminates the need for profile welding and module assembly, significantly shortening the production cycle, reducing labor costs, improving material utilization, and lowering unit costs. The steel bar installation structure is designed in tandem with the enclosure, resulting in more uniform stress distribution, resisting potential cell expansion during charging, and ensuring long-term stable operation.

[0036] The vertically integrated die-cast structure significantly enhances structural strength and reduces the number of welded joints compared to traditional solutions, resulting in a substantial improvement in sealing. The contact surface between the side end plate 7 and the battery cell is a zero-draft contact surface, reducing thermal resistance and keeping the cell temperature difference within an ideal range, thus extending cycle life. Eliminating the need for battery cell modules increases cell integration density and optimizes system energy density. The overall weight of the enclosure is reduced, lowering transportation and installation costs. The cell installation process is significantly simplified, allowing for rapid integration into automated production lines.

[0037] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0039] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An integrated die-casting CTP liquid-cooled energy storage box, characterized in that, The integrated die-cast CTP liquid-cooled energy storage tank includes a liquid-cooled base plate (1) and side end plates (7) connected to both ends of the liquid-cooled base plate (1). The liquid-cooled base plate (1) and the side end plates (7) at both ends are integral die-cast structures. A liquid-cooled flow channel (3) is provided on the outer bottom of the liquid-cooled base plate (1). A welded base plate (8) covering the liquid-cooled flow channel (3) is welded to the bottom surface of the liquid-cooled base plate (1). Multiple reinforcing steel bars (2) are detachably connected between the two side end plates (7) by bolts.

2. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, The side end plate (7) includes a plurality of square tubes (9) and flat plates (10) spaced apart. The left and right edges of the outer side of the square tubes (9) are provided with reinforcing ribs (11) between them and the liquid-cooled base plate (1).

3. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, The liquid-cooled base plate (1) is provided with an extension plate (13) along the circumferential direction. A support rib (14) is provided between the outer extension plate (13) and the side of the liquid-cooled base plate (1), and a plurality of mounting holes (4) are provided on the outer extension plate (13).

4. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, The reinforcing steel strip (2) is provided with L-shaped connecting parts (6) or T-shaped connecting parts (5) at both ends. The connecting part is provided with a through hole, and the side end plate (7) is provided with a screw hole corresponding to the through hole. A screw hole that is screwed into the through hole is installed in the through hole. The middle part of the side end plate (7) is provided with a socket (12) that corresponds to the T-shaped connecting part (5) and can be inserted into the reinforcing steel strip (2) connected to the T-shaped connecting part (5).

5. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, The bottom of the liquid-cooled base plate (1) is provided with a recessed groove that is embedded in the welding base plate (8).

6. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, The end of the liquid-cooled base plate (1) is provided with an inlet nozzle (15) and an outlet nozzle (16) that are respectively connected to the inlet end and the outlet end of the liquid-cooled flow channel (3).

7. The integrated die-cast CTP liquid-cooled energy storage tank according to claim 1, characterized in that, One end of the liquid-cooled base plate (1) protrudes a distance from the side end plate (7) that is close to it. The upper surface of the protruding part of the liquid-cooled base plate (1) is provided with a protruding post, and the protruding post is provided with a threaded hole.

Images