Punching-free liquid cooling plate structure for integrated box body

Abstract

The utility model discloses a punching-free liquid cooling plate structure for an integrated box body, which comprises a liquid cooling plate, the bottom of the liquid cooling plate is welded on two box body cross beams which are arranged in parallel, and the top of the liquid cooling plate is provided with a box body which needs to be integrated through a welded fastener. The fasteners are directly fastened and installed on the liquid cooling plate and the box body, the situation that holes are formed in the liquid cooling plate so that flow channels can be interfered is avoided, the air tightness safety of the whole PACK package is greatly improved, air leakage and liquid leakage are reduced, maintenance and replacement are easy and convenient, when the box body has problems, the box body can be independently disassembled and maintained by unscrewing nuts on bolts, and the maintenance cost is reduced. The liquid cooling plate and the battery module do not need to be detached, and maintenance and replacement are convenient.

Description

Technical Field

[0001] The utility model relates to the field of liquid cooling of PACK battery packs, in particular to a punch-free liquid cooling plate structure for an integrated box. Background Art

[0002] With the rapid development of new energy electric vehicles, the safety performance of batteries has received more and more attention. At present, the battery thermal management system mainly uses water cooling with higher heat transfer efficiency and more uniform temperature control.

[0003] In a liquid-cooled PACK, the liquid cooling plate is generally arranged below the battery, and a heat-conducting medium is filled between the liquid cooling plate and the battery. The liquid cooling plate is integrated with the box and various components on the liquid cooling plate through fasteners such as bolts.

[0004] like Figure 1-2 As shown, in the existing conventional PACK package, the liquid cooling plate is placed at the bottom of the battery module, the box body acts as a frame, a through hole is preset on the liquid cooling plate 1, and ordinary bolts are fixed on the box body cross beam 2. The screw of the ordinary bolt passes through the preset through hole of the liquid cooling plate 1 and cooperates with the integrated components and battery module fastening nuts above the liquid cooling plate 1. The current integration method has the following defects:

[0005] 1. Due to the influence of many factors on site environment and the special structure of the liquid cooling plate (it has a flow channel), many conditions do not allow the liquid cooling plate to have through holes for bolts to pass through. If holes are opened on the liquid cooling plate, the risk of air and liquid leakage from the liquid cooling plate will increase.

[0006] 2. Previously, no matter which component needed to be repaired, it was necessary to disassemble the liquid cooling plate, box, module and other components, and the repair and replacement process was relatively complicated. Utility Model Content

[0007] The purpose of the utility model is to provide a punch-free liquid cooling plate structure for an integrated box. By welding fasteners on the liquid cooling plate, the fasteners are directly fastened and installed on the liquid cooling plate and the box, avoiding the situation where drilling holes on the liquid cooling plate will cause flow channel interference, greatly improving the airtightness and safety of the entire PACK package, reducing air and liquid leakage, and making maintenance and replacement simple and convenient, which can solve the problems in the prior art.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A punch-free liquid cooling plate structure for an integrated box comprises a liquid cooling plate, the bottom of which is welded to two parallel box cross beams, and the top of which is mounted on the box to be integrated via welded fasteners.

[0010] Furthermore, the fastener includes a gasket and a bolt, the gasket is welded to the liquid cooling plate, and one end of the bolt is inserted into the gasket and welded to the gasket.

[0011] Furthermore, the fastener also includes a limiting ring, and the limiting ring is sleeved on the end of the bolt.

[0012] Furthermore, the inner ring of the limiting ring is welded to the bolt, and the outer ring of the limiting ring is welded to the gasket.

[0013] Furthermore, the limiting ring is embedded in the gasket.

[0014] Furthermore, the end faces of the gasket, the bolt and the limiting ring are flush.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model welds fasteners on the liquid cooling plate, and the box to be integrated is fastened and installed by bolts and nuts of the fasteners, replacing the traditional method in which bolts pass through the box crossbeam and the liquid cooling plate and then are installed with the box to be integrated. The fasteners of the utility model are directly fastened and installed with the box on the liquid cooling plate, and there is no need to punch holes in the liquid cooling plate. When designing the flow channel of the liquid cooling plate, there is no need to consider factors such as the need to avoid the flow channel when opening holes at corresponding positions, avoiding the situation in which opening holes on the liquid cooling plate will interfere with the flow channel, greatly improving the air tightness and safety of the entire PACK package, and reducing the risk of air and liquid leakage.

[0017] 2. Since the fasteners of the utility model do not need to pass through the liquid cooling plate, when there is a problem with the box, the nuts on the bolts can be unscrewed and the box can be disassembled separately for maintenance. The liquid cooling plate and the battery module do not need to be disassembled, and parts not involved in disassembly are directly omitted, making maintenance and replacement simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view of the installation of a traditional liquid cooling plate and a box;

[0019] Figure 2 for Figure 1 A partial enlarged view of

[0020] Figure 3 This is a front view of the installation of the liquid cooling plate and the box body of the utility model;

[0021] Figure 4 It is a side view of the installation of the liquid cooling plate and the box body of the utility model;

[0022] Figure 5 It is a top view of the installation of the liquid cooling plate and the box body of the utility model;

[0023] Figure 6 For this utility model Figure 3A partial enlarged view of

[0024] Figure 7 It is a front view of the fastener of the utility model;

[0025] Figure 8 For this utility model Figure 7 Bottom view of

[0026] Fig. 9 For this utility model Figure 7 AA section view.

[0027] In the figure: 1. Liquid cooling plate; 2. Box crossbeam; 3. Fastener; 301. Gasket; 302. Bolt; 303. Limiting ring; 4. Box. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 3-Figure 6 , a punch-free liquid cooling plate structure for an integrated box, comprising a liquid cooling plate 1, the bottom of the liquid cooling plate 1 is welded to two parallel box cross beams 2, the box cross beams 2 support and lift the liquid cooling plate 1, the top of the liquid cooling plate 1 is installed with a box 4 to be integrated through a welded fastener 3, the data and position of the fastener 3 are determined according to the data and position of the mounting holes of the box 4, the data and position of the fastener 3 correspond to the data and position of the mounting holes of the box 4, the box 4 shown in this embodiment has four mounting holes, and the four mounting holes are located at the four corners of the box 4, so the data of the fastener 3 of the present application is set to 4, and its position distribution corresponds to the four mounting holes of the box 4, because the fastener 3 is welded on the liquid cooling plate 1, the fastener 3 does not need to pass through the bottom of the liquid cooling plate 1 as in the traditional way (such as Figure 2 As shown), the fastener 3 of the utility model is directly fastened to the box 4 that needs to be installed and integrated on the top of the liquid cooling plate 1, avoiding passing through the bottom of the liquid cooling plate 1, thus avoiding drilling holes on the liquid cooling plate 1, and reducing the existence of air leakage and liquid leakage.

[0030] See also Figure 7-Figure 9The fastener 3 includes a gasket 301 and a bolt 302. The gasket 301 is welded to the liquid cooling plate 1. One end of the bolt 302 is inserted into the gasket 301 and welded to the gasket 301. When installing the box body 4 that needs to be integrated, the bolt 302 passes through the mounting holes at the four corners of the box body 4, and then the nut is screwed on to fasten the box body 4. In the subsequent battery pack maintenance stage, if there is a problem with the box body 4, the nut on the bolt 302 can be unscrewed and the box body 4 can be disassembled and repaired separately. The liquid cooling plate 1 and the battery module do not need to be disassembled, and the parts not involved in the disassembly are directly omitted, and the maintenance and replacement are simple and convenient.

[0031] See also Figure 7-Figure 9 The fastener 3 also includes a limiting ring 303, which is embedded in the gasket 301. The limiting ring 303 is sleeved on the end of the bolt 302. The inner ring of the limiting ring 303 is welded to the bolt 302, and the outer ring of the limiting ring 303 is welded to the gasket 301. Since the single bolt 302 lacks a limiting structure in the vertical direction, an embedded limiting ring 303 is provided. Since the limiting ring 303 is welded to the bolt 302 and the gasket 301, it can be ensured that the limiting ring 303 limits the bolt 302, thereby increasing the stability of the bolt 302.

[0032] The end surfaces of the gasket 301 , the bolt 302 and the limiting ring 303 are flush, ensuring that the bottom of the fastener 3 is flat and can fit with the liquid cooling plate 1 .

[0033] The operation process of the utility model is as follows:

[0034] First, weld the liquid cooling plate 1 to the box crossbeam 2, weld the gasket 301 of the fastener 3 on the liquid cooling plate 1, align the mounting holes at the four corners of the box 4 with the four bolts 302, and after the bolts 302 pass through the mounting holes, tighten the nuts on the bolts 302. If it needs to be disassembled for maintenance, just unscrew the nuts on the bolts 302.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punch-free liquid cooling plate structure for an integrated box, comprising a liquid cooling plate (1), characterized in that: The bottom of the liquid cooling plate (1) is welded to two box cross beams (2) arranged in parallel, and the top of the liquid cooling plate (1) is mounted on the box (4) to be integrated via a welded fastener (3), wherein the fastener (3) comprises a gasket (301) and a bolt (302), wherein the gasket (301) is welded to the liquid cooling plate (1), and one end of the bolt (302) is inserted into the interior of the gasket (301) and welded to the gasket (301).

2. The punch-free liquid cooling plate structure for an integrated box according to claim 1, characterized in that: The fastener (3) further comprises a limiting ring (303), wherein the limiting ring (303) is sleeved on the end of the bolt (302).

3. The punch-free liquid cooling plate structure for an integrated box according to claim 2, characterized in that: The inner ring of the limiting ring (303) is welded to the bolt (302), and the outer ring of the limiting ring (303) is welded to the gasket (301).

4. The punch-free liquid cooling plate structure for an integrated box according to claim 2, characterized in that: The limiting ring (303) is embedded in the gasket (301).

5. The punch-free liquid cooling plate structure for an integrated box according to claim 3, characterized in that: The end surfaces of the gasket (301), the bolt (302) and the limiting ring (303) are flush.

Images