Aluminum alloy battery shell convenient to install heat dissipation structure

Abstract

The utility model belongs to the technical field of aluminum alloy material application, and particularly relates to an aluminum alloy battery shell convenient for mounting a heat dissipation structure. According to the aluminum alloy battery shell convenient to install the heat dissipation structure, the shell with the hole flanges, the bolts, the nuts, the inverted L-shaped ring body units, the fixing plate units, the outer side fixing strip units and the inner side fixing strip units are arranged on the shell, so that 1, the fixing plate units and the shell are installed through the bolts and the nuts; an additional mounting structure is not needed, and the mounting and dismounting operation can be performed after a small number of corresponding bolts and nuts are unscrewed, so that the shell structure is greatly simplified; and 2, even if liquid leaks from the radiating pipe at the upper part, the liquid can be blocked by the inverted L-shaped ring body unit, so that the cooling liquid is difficult to enter from a gap between the two shells.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum alloy material application, and in particular relates to an aluminum alloy battery shell with a heat dissipation structure that is convenient for installation. Background Art

[0002] Generally, the materials of battery casings are mainly aluminum alloy and hard plastic. The main advantage of the former is its strong structural strength, while the main advantage of the latter is its insulation.

[0003] The common aluminum alloy battery shell currently has a structure mainly composed of: a shell and a heat dissipation pipe. The shell and the heat dissipation pipe are divided into two parts, and the two shells are screwed together to fully seal the battery cell, and it is optional to set a connecting pipe between the two sets of heat dissipation pipes.

[0004] Finally, the rectangular aluminum alloy battery casing can achieve sufficient heat dissipation performance on the upper and lower panels.

[0005] For example, a Chinese utility model patent with authorization announcement number CN214625173U and authorization announcement date 2021.11.05 discloses an aluminum alloy battery case for an automobile, comprising two storage shells enclosing a battery storage cavity, the battery storage cavity is connected to a positive electrode column port and a negative electrode column port, at least one storage shell is sealed with a cooling shell on the side facing away from the battery storage cavity, the storage shell and the cooling shell enclose a coolant flow channel, and the cooling shell is provided with a liquid inlet and a liquid outlet connected to the coolant flow channel.

[0006] The principles and advantages of the aluminum alloy battery case in this utility model patent are as follows: a coolant flow channel is formed by enclosing the cooling shell and the storage shell, so that the coolant in the coolant flow channel can directly absorb the heat of the battery through the cooling shell, thereby reducing the heat transfer medium and improving the cooling efficiency.

[0007] However, the aluminum alloy battery case still has at least the following two shortcomings during actual use, which are also the technical problems to be solved by the present utility model, namely:

[0008] First, the locking frame structure is installed independently, and is also equipped with a relatively complex positioning structure, which ultimately makes the disassembly and assembly of the cooling shell structure more difficult and increases the structural complexity of the battery shell;

[0009] Second, there is a lack of necessary waterproof structure between the flange structure and the cooling shell structure above. Once the cooling shell leaks, the coolant is relatively easy to enter the battery shell through the bolt holes at the flange, eventually causing an accident.

[0010] Therefore, in summary, there is an urgent need for a new shell structure made of aluminum alloy that is easy to disassemble and assemble and that does not easily allow the coolant to enter the shell even if it leaks accidentally. Utility Model Content

[0011] The utility model provides an aluminum alloy battery shell for convenient installation of a heat dissipation structure, which can be achieved by arranging a shell flange with holes, bolts, nuts, an inverted L-shaped ring unit, a fixing bar unit, an outer fixing bar unit, and an inner fixing bar unit on the shell, so that: 1. The fixing bar unit and the shell are both installed by bolts and nuts, the former does not need an additional installation structure, and can be disassembled and assembled after a small number of bolts and nuts are unscrewed, thereby greatly simplifying the shell structure; 2. Even if the upper heat dissipation pipe leaks, it can be blocked by the inverted L-shaped ring unit, and it is difficult for the coolant to enter from the gap between the two shells.

[0012] The technical solution adopted by the utility model to solve the above-mentioned problem is: an aluminum alloy battery shell for convenient installation of a heat dissipation structure, the structure comprising two shells, a shell flange with holes, bolts, and nuts, and also comprising an inverted L-shaped ring unit arranged on the outer side surface of one of the shells and used for waterproof covering above the shell flange with holes, two fixing plate units respectively arranged on the two shells and used for clamping the heat dissipation pipe, an outer fixing strip unit arranged on one of the fixing plate units, located at the same side position as the inverted L-shaped ring unit, and used for connecting the bolts, and an inner fixing strip unit arranged on the other fixing plate unit, located at the opposite side position as the inverted L-shaped ring unit, and used for connecting the bolts.

[0013] A further preferred technical solution is that the inverted L-shaped ring unit includes a transverse ring body arranged on the outer side of the shell and located above the perforated flange of the shell, and a vertical ring body arranged on the lower surface of the transverse ring body.

[0014] A further preferred technical solution is that the height of the lower surface of the vertical ring body is located between the upper and lower surfaces of the flange with holes of the outer shell below.

[0015] A further preferred technical solution is that the fixing plate unit includes a plate body and an arc-shaped groove provided on the plate body and used for engaging the heat dissipation pipe.

[0016] A further preferred technical solution is that the fixing plate unit further includes a heat conducting pad which is arranged on the plate body and located between the heat dissipation pipe and the housing.

[0017] A further preferred technical solution is that the fixing plate unit further comprises an insertion column arranged on the plate body, and an anti-drop hole arranged on the thermal pad and used for plugging the insertion column.

[0018] A further preferred technical solution is that the outer fixing strip unit includes an outer vertical plate arranged on the plate body and located on the outer side surface of the vertical ring body, and a first perforated plate arranged on the lower surface of the perforated flange of the outer shell below.

[0019] A further preferred technical solution is that the inner fixing strip unit includes an inner vertical plate arranged on the plate body and located on the outer side of the outer shell below, and a second orifice plate arranged on the inner vertical plate and connected to the bolts together with the first orifice plate.

[0020] A further preferred technical solution is that the distance between the transverse ring body and the opposite side of the flange with holes of the shell on the same side is smaller than the length of the bolt.

[0021] A further preferred technical solution is that the number of the outer fixing bar units and the number of the inner fixing bar units are both 2. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic diagram of the position of the fixed plate unit in the utility model from a top view.

[0024] Figure 3 It is a schematic diagram of the position structure of the middle and outer side fixing strip units of the utility model.

[0025] Figure 4 It is a schematic diagram of the position structure of the inner fixing strip unit in the utility model.

[0026] Figure 5 It is a schematic diagram of the position of the anti-drop hole in the utility model from a top view.

[0027] Figure 6 It is a schematic diagram of the position structure of the inverted L-shaped ring unit in the utility model.

[0028] Figure 7 It is a schematic diagram of the position of the flange with holes of the shell in the utility model from a top view.

[0029] Figure 8 It is a structural schematic diagram of the lower shell in the utility model.

[0030] In the figure, the meanings of the symbols are as follows:

[0031] Heat dissipation pipe a, connecting pipe b, battery core c;

[0032] Shell 11, shell flange with holes 12, bolts 13, nuts 14, electrode openings 15;

[0033] Inverted L-shaped ring unit 1, fixed plate unit 2, outer fixing strip unit 3, inner fixing strip unit 4;

[0034] The horizontal ring body 101 , the vertical ring body 102 , the plate body 201 , the arc-shaped groove 202 , the thermal pad 203 , the insertion column 204 , the anti-drop hole 205 , the outer vertical plate 301 , the first orifice plate 302 , the inner vertical plate 401 , and the second orifice plate 402 . DETAILED DESCRIPTION

[0035] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0036] As attached Figure 1-8 As shown, an aluminum alloy battery shell for convenient installation of a heat dissipation structure includes two shells 11, a shell flange with holes 12, bolts 13, and nuts 14, and also includes an inverted L-shaped ring unit 1 arranged on the outer side of one of the shells 11 and used for waterproofing above the shell flange with holes 12, two fixing plate units 2 respectively arranged on the two shells 11 and used for clamping the heat dissipation pipe a, an outer fixing strip unit 3 arranged on one of the fixing plate units 2 and located at the same side as the inverted L-shaped ring unit 1 and used for connecting the bolt 13, and an inner fixing strip unit 4 arranged on the other fixing plate unit 2 and located at the opposite side of the inverted L-shaped ring unit 1 and used for connecting the bolt 13.

[0037] In this embodiment, the structure of the aluminum alloy battery shell is composed of: two outer shells 11, each of which is provided with a circle of the outer shell perforated flange 12, 8-30 screw parts composed of the bolts 13 and nuts 14, an inverted L-shaped ring unit 1, two fixing plate units 2, two outer fixing bar units 3, and two inner fixing bar units 4.

[0038] The correct installation orientation of the aluminum alloy battery housing is that the inverted L-shaped ring unit 1 is on top. The lengths of the two fixing plate units 2 are different, the longer fixing plate unit 2 is matched with the two outer fixing bar units 3, and the shorter fixing plate unit 2 is matched with the two inner fixing bar units 4.

[0039] In addition, the shape of the housing 11 is rectangular, and the outer fixing bar unit 3 and the inner fixing bar unit 4 are both installed on the wide side of the rectangle, and both are installed by screwing 1-2 of the above screwed parts. At this time, when the fixing plate unit 2 is disassembled and the heat dissipation pipe a is replaced, there is no need to completely open the two housings 11, and only a small number of the above screwed parts need to be unscrewed, which is very simple and practical.

[0040] In addition, the housing 11 and the housing flange 12 with holes are integrally formed and made of aluminum alloy. The fixing plate unit 2 and the outer fixing bar unit 3, the fixing plate unit 2 and the inner fixing bar unit 4 are also integrally formed and made of aluminum alloy or hard plastic. The latter two are both U-shaped, and the U-shaped size corresponding to the outer fixing bar unit 3 is relatively larger.

[0041] Finally, the possible liquid inlet position of the aluminum alloy battery shell can only be the gap between the two shells 11. Therefore, even if the heat dissipation pipe a below leaks, it is difficult to enter the gap upwards, so its leakage protection needs do not need to be considered. When the heat dissipation pipe a above leaks, it needs to cross the inverted L-shaped ring unit 1 to enter the gap between the two shells 11, which is also very difficult. Therefore, the aluminum alloy battery shell has an outstanding leakage protection effect.

[0042] The inverted L-shaped ring unit 1 includes a transverse ring 101 disposed on the outer side of the shell 11 and located above the perforated flange 12 of the shell, and a vertical ring 102 disposed on the lower surface of the transverse ring 101 .

[0043] In this embodiment, the vertical cross-sectional shape of each location on the inverted L-shaped ring unit 1 is an inverted L-shape, ensuring that the coolant that may flow down from the upper heat dissipation pipe a is blocked at the horizontal ring 101 and isolated at the vertical ring 102, i.e., away from the gap between the coolant and the outer shell 11.

[0044] In other words, if the coolant flows into the aluminum alloy battery casing, it can only "dangle" from the lower edge of the vertical ring body 102 to the gap of the outer casing 11, which is almost impossible.

[0045] The height of the lower surface of the vertical ring body 102 is located between the upper and lower surfaces of the outer shell flange 12 with holes below.

[0046] In this embodiment, the lower surface of the vertical ring body 102 is lower than the gap of the shell 11. At this time, the above-mentioned "shaking" action requires anti-gravity, which is more difficult, so the leakage protection performance of the aluminum alloy battery shell can be greatly improved.

[0047] In addition, the lower surface of the vertical ring body 102 cannot be lower than the lower surface of the outer shell flange 12 below. This is because the lower surface of the outer shell flange 12 below needs to be installed with the outer fixing bar unit 3. This setting can prevent the vertical ring body 102 from squeezing and damaging the outer fixing bar unit 3.

[0048] The fixing plate unit 2 includes a plate body 201 and an arc-shaped groove 202 disposed on the plate body 201 and used for engaging the heat dissipation pipe a.

[0049] In this embodiment, the heat dissipation tube a and the connecting tube b are both commercially available products, and the battery cell c is various types of existing common new energy battery cells.

[0050] The plate body 201 is in a rectangular shape, and the arc-shaped groove 202 is used to clamp the straight pipe section of the heat dissipation pipe a. At this point, the heat dissipation pipe a finally cools the battery cell c.

[0051] The fixing plate unit 2 further includes a heat conducting pad 203 which is arranged on the plate body 201 and located between the heat dissipation pipe a and the housing 11 .

[0052] In this embodiment, the thermal pad 203 is made of commonly available thermally conductive silicone and is rectangular in shape. It does not matter whether a reciprocating groove for engaging the heat pipe a is provided thereon, because the thermally conductive silicone material itself can be deformed appropriately. Even if there is no groove thereon, it can largely fit the heat pipe a, thereby ensuring that the heat on the housing 11 can be quickly and completely transferred to the heat pipe a.

[0053] The fixing plate unit 2 further includes an insertion column 204 disposed on the plate body 201 , and an anti-drop hole 205 disposed on the thermal pad 203 and used for plugging the insertion column 204 .

[0054] In this embodiment, the thermal pad 203 can be integrally formed with the plate body 201, or can be movably connected to the latter, such as by screwing, plugging, and bonding.

[0055] The insertion column 204 is plugged into the anti-drop hole 205, so that the thermal pad 203 has both installation stability and convenient assembly and disassembly.

[0056] The outer fixing bar unit 3 includes an outer vertical plate 301 arranged on the plate body 201 and located on the outer side of the vertical ring body 102 , and a first perforated plate 302 arranged on the lower surface of the outer shell perforated flange 12 below.

[0057] In this embodiment, when the aluminum alloy battery case is installed, the two shells 11 are first fully screwed, and then the outer fixing bar unit 3 and the inner fixing bar unit 4 are installed. For example, all the bolts 13 and nuts 14 that are not needed to connect the outer fixing bar unit 3 and the inner fixing bar unit 4 can be tightened first, and then the outer fixing bar unit 3 and the inner fixing bar unit 4 are installed, and finally the remaining few screwed parts on the outer fixing bar unit 3 and the inner fixing bar unit 4 are tightened.

[0058] Among them, due to the existence of the inverted L-shaped ring body unit 1, the outer vertical plate 301 must avoid the inverted L-shaped ring body unit 1, so the outer vertical plate 301 is relatively closer to the outside, and the corresponding plate body 201 is also relatively longer, which is unnecessary for the inner fixing strip unit 4.

[0059] The inner fixing bar unit 4 includes an inner vertical plate 401 disposed on the plate body 201 and located on the outer side of the lower shell 11 , and a second hole plate 402 disposed on the inner vertical plate 401 and connected to the bolt 13 together with the first hole plate 302 .

[0060] In this embodiment, the word "inside" of the inner vertical plate 401 means that the former is closer to the housing 11 than the outer vertical plate 301. The second hole plate 402 has the same shape as the first hole plate 302, that is, a rectangular plate with a circular hole, and there is no restriction on the relative vertical position relationship between the two.

[0061] In addition, the outer vertical plate 301 abuts against the horizontal ring body 101 and the vertical ring body 102, and the inner vertical plate 401 abuts against the outer side surface of the lower shell 11, which can further improve the structural stability of the aluminum alloy battery shell.

[0062] Finally, the outer fixing bar unit 3 and the inner fixing bar unit 4 are aligned with the preset mounting holes on the outer shell flange 12 by sliding, and both do not need to be deformed and opened to engage with the outer shell flange 12. The outer fixing bar unit 3 and the inner fixing bar unit 4 do not need to have greater elastic properties when selecting materials.

[0063] The distance between the transverse ring body 101 and the opposite side of the housing flange with holes 12 on the same side is smaller than the length of the bolt 13 .

[0064] In this embodiment, the maximum withdrawal distance of the bolt 13 on the housing flange 12 is also less than its length. Therefore, without damaging the inverted L-shaped ring unit 1, the bolt 13 cannot be separated from the housing 11 with the inverted L-shaped ring unit 1. In this way, the insertion action of the bolt 13 on the housing flange 12 can be omitted.

[0065] However, it should be noted that if the distance between the transverse ring body 101 and the opposite side of the housing flange 12 with holes on the same side is much smaller than the length of the bolt 13, the outer fixing bar unit 3 and the inner fixing bar unit 4 may be held by the protruding rod of the bolt 13 when they slide and align with the openings on the housing flange 12 with holes, and in this case, the outer fixing bar unit 3 and the inner fixing bar unit 4 are required to have a certain elasticity.

[0066] Or on the other hand, it is set that: the distance between the transverse ring body 101 and the opposite side of the outer shell flange 12 on the same side is smaller than the length of the bolt 13, but after the upper and lower two outer shell flanges 12 are aligned, it is also necessary to ensure that the rod of the bolt 13 at least does not protrude below the lower surface of the lower outer shell flange 12.

[0067] The number of the outer fixing bar units 3 and the number of the inner fixing bar units 4 are both two.

[0068] In this embodiment, the outer fixing bar units 3 and the inner fixing bar units 4 are arranged in pairs on one side of the wide side of the aluminum alloy battery housing, and two pairs are arranged in total.

[0069] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. An aluminum alloy battery casing for convenient installation of a heat dissipation structure, the structure comprising two casings (11), a casing flange with holes (12), bolts (13), and nuts (14), characterized in that: It also includes an inverted L-shaped ring unit (1) arranged on the outer side of one of the outer shells (11) and used for waterproofing the upper side of the outer shell flange (12), two fixing plate units (2) respectively arranged on the two outer shells (11) and used for clamping the heat dissipation pipe (a), an outer fixing strip unit (3) arranged on one of the fixing plate units (2) and located on the same side as the inverted L-shaped ring unit (1) and used for connecting the bolt (13), and an inner fixing strip unit (4) arranged on the other fixing plate unit (2) and located on the opposite side of the inverted L-shaped ring unit (1) and used for connecting the bolt (13).

2. The aluminum alloy battery housing with a heat dissipation structure that is convenient to install according to claim 1 is characterized in that: The inverted L-shaped ring body unit (1) comprises a transverse ring body (101) arranged on the outer side surface of the outer shell (11) and located above the outer shell flange (12) with holes, and a vertical ring body (102) arranged on the lower surface of the transverse ring body (101).

3. The aluminum alloy battery housing with a heat dissipation structure that is convenient to install according to claim 2 is characterized in that: The height of the lower surface of the vertical ring body (102) is located between the upper and lower surfaces of the outer shell flange (12) with holes below.

4. The aluminum alloy battery housing with a heat dissipation structure that is convenient to install according to claim 2 is characterized in that: The fixed plate unit (2) comprises a plate body (201) and an arc-shaped groove (202) arranged on the plate body (201) and used for engaging the heat dissipation pipe (a).

5. The aluminum alloy battery housing with a heat dissipation structure convenient for installation according to claim 4 is characterized in that: The fixed plate unit (2) further comprises a heat conducting pad (203) arranged on the plate body (201) and located between the heat dissipation pipe (a) and the housing (11).

6. The aluminum alloy battery housing with a heat dissipation structure that is convenient to install according to claim 5 is characterized in that: The fixed plate unit (2) further comprises an insertion column (204) arranged on the plate body (201), and an anti-drop hole (205) arranged on the thermal pad (203) and used for plugging the insertion column (204).

7. The aluminum alloy battery housing with a heat dissipation structure convenient for installation according to claim 4 is characterized in that: The outer fixing strip unit (3) comprises an outer vertical plate (301) arranged on the plate body (201) and located on the outer side of the vertical ring body (102), and a first perforated plate (302) arranged on the lower surface of the outer shell perforated flange (12) below.

8. The aluminum alloy battery housing with a heat dissipation structure that is convenient to install according to claim 7 is characterized in that: The inner fixing strip unit (4) comprises an inner vertical plate (401) arranged on the plate body (201) and located on the outer side of the outer shell (11) below, and a second orifice plate (402) arranged on the inner vertical plate (401) and connected to the bolt (13) together with the first orifice plate (302).

9. The aluminum alloy battery housing with a heat dissipation structure convenient for installation according to claim 2, characterized in that: The distance between the transverse ring body (101) and the opposite side of the housing flange with holes (12) on the same side is smaller than the length of the bolt (13).

10. The aluminum alloy battery housing with a heat dissipation structure convenient for installation according to claim 1, characterized in that: The number of the outer fixing strip units (3) and the number of the inner fixing strip units (4) are both two.

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