Impact-resistant sheet metal part of power battery

Abstract

The utility model discloses an anti-impact sheet metal part of a power battery, which relates to the technical field of sheet metal parts and comprises a first sheet metal part, one side of the first sheet metal part is movably connected with a second sheet metal part, a battery pack is placed in the first sheet metal part, and the first sheet metal part and the second sheet metal part are both formed by anti-pressure parts. Inserting grooves are formed in the two sides of the upper end of the first metal plate, inserting blocks are fixedly connected to the two sides of the lower end of the second metal plate, the inserting blocks are movably connected with the inserting grooves, and positioning assemblies are fixedly connected to the two sides of the second metal plate. By adopting the structure, the first aluminum alloy plate, the polycarbonate thin layer, the elastic layer and the second aluminum alloy plate are arranged, and a multi-layer composite structure design is adopted, so that the impact resistance of the battery shell is obviously enhanced, an internal battery is more effectively protected, potential safety hazards of an existing power battery are reduced, and the service life of the battery shell is prolonged. The service life of the power battery is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of sheet metal parts, and particularly relates to an impact-resistant sheet metal part for a power battery. Background Art

[0002] As an important part of the battery system, the material selection, design and manufacturing process of the power battery casing have a crucial impact on the performance, safety and life of the battery. In the current development of battery technology, sheet metal, as a common material for power battery casings, is highly favored due to its unique physical and chemical properties.

[0003] For example, a Chinese patent with a publication number of CN208271956U discloses a square power battery casing, comprising: a casing body, the casing body is an integrally formed component formed by the side surface and the bottom surface; the casing body is also provided with an opening, the opening is arranged opposite to the bottom surface; the bottom surface of the casing body is provided with a groove recessed toward the inside of the casing body, a raised table is formed inside the casing body corresponding to the groove, and the top surface of the raised table is a plane; the height of the raised table recessed toward the inside of the casing body exceeds the arc angle height of the bottom surface of the casing body.

[0004] The above-mentioned method provides a raised table on the bottom surface of the square power battery shell instead of an insulating sheet, which has better thermal conductivity. However, the single-layer aluminum alloy plate material used in the current shell is light and has a certain strength, but its impact resistance is slightly insufficient when facing complex external impacts and vibrations, which may bring potential safety hazards to the internal battery. Although the raised table structure helps to improve the heat dissipation performance, the efficiency of relying solely on the shell for heat dissipation is still limited, which is not conducive to battery operation. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present utility model is to provide an impact-resistant sheet metal part for a power battery to solve the problems in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A power battery impact-resistant sheet metal part, comprising a first sheet metal, a second sheet metal being movably connected to one side of the first sheet metal, a battery pack being placed inside the first sheet metal, the first sheet metal and the second sheet metal both being composed of pressure-resistant parts, slots being provided at both sides of the upper end of the first sheet metal, plug blocks being fixedly connected to both sides of the lower end of the second sheet metal, the plug blocks being movably connected to the slots, positioning components being fixedly connected to both sides of the second sheet metal, a groove being provided at the lower end of the first sheet metal, a fan being fixedly connected inside the groove, and a ventilation component being provided at one side of the first sheet metal;

[0008] The pressure-resistant part is composed of a first aluminum alloy plate, a polycarbonate thin layer, an elastic layer, and a second aluminum alloy plate from the outside to the inside. One side of the first aluminum alloy plate is fixedly connected to one side of the polycarbonate thin layer, one side of the polycarbonate thin layer is fixedly connected to one side of the elastic layer, and one side of the elastic layer is fixedly connected to one side of the second aluminum alloy.

[0009] As a preferred technical solution, the ventilation component includes a first air hole, which is opened at the lower end of the first sheet metal, and second air holes are opened on both sides of the first sheet metal away from the first air hole, and the first air hole is connected to the second air hole.

[0010] As a preferred technical solution, installation grooves are provided on both sides of the inner wall of one end of the groove, and the first air vent passes through the installation grooves.

[0011] As a preferred technical solution, a dustproof net is fixedly connected to the interior of the installation groove, and the dustproof net covers the fan.

[0012] As a preferred technical solution, a positioning angle steel is fixedly connected to the interior of the first sheet metal, and four positioning angle steels are provided. One side of the battery pack is fittedly connected to one side of the positioning angle steel, and a mounting hole is provided on the positioning angle steel.

[0013] As a preferred technical solution, the positioning assembly includes a fixed block, which is fixedly connected to both sides of the second sheet metal, a sliding groove is opened inside the fixed block, a slider is slidably connected inside the sliding groove, one end of the slider is fixedly connected to a positioning rod, one side of the positioning rod passes through a slot and is plugged into the plug block, a screw is rotatably connected inside the sliding groove, and one end of the screw is fixedly connected to a torsion block.

[0014] In summary, the utility model mainly has the following beneficial effects:

[0015] First, in the utility model, by providing a first aluminum alloy plate, a polycarbonate thin layer, an elastic layer, and a second aluminum alloy plate, a multi-layer composite structure design is adopted to significantly enhance the impact resistance of the battery housing, thereby more effectively protecting the internal battery, reducing the potential safety hazards of existing power batteries, and extending the service life of the power battery;

[0016] Second, in the utility model, a groove is provided under the first sheet metal, a fan is installed in the groove, and a ventilation component is also provided on the first sheet metal. After the fan is working, the heat generated by the battery in the outer shell can be discharged, thereby accelerating the heat dissipation of the power battery, improving the heat dissipation efficiency, and ensuring the normal operation of the power battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the first sheet metal bottom structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the first sheet metal of the utility model;

[0020] Figure 4 This utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 It is a schematic diagram of the structure of the compression-resistant part of the utility model.

[0022] Figure numerals: 1. first sheet metal; 2. second sheet metal; 3. battery pack; 4. groove; 5. fan; 6. ventilation assembly; 61. first air vent; 62. mounting groove; 63. second air vent; 64. dust net; 7. positioning angle steel; 8. mounting hole; 9. pressure-resistant part; 91. first aluminum alloy plate; 92. polycarbonate thin layer; 93. elastic layer; 94. second aluminum alloy plate; 10. slot; 11. insert block; 12. positioning assembly; 121. fixing block; 122. slide groove; 123. screw; 124. slider; 125. positioning rod; 126. torsion block. DETAILED DESCRIPTION Example

[0023] refer to Figures 1 to 5 , a power battery impact-resistant sheet metal part of the present embodiment includes a first sheet metal 1, a second sheet metal 2 is movably connected to one side of the first sheet metal 1, a battery pack 3 is placed inside the first sheet metal 1, the first sheet metal 1 and the second sheet metal 2 are both composed of a pressure-resistant part 9, slots 10 are provided on both sides of the upper end of the first sheet metal 1, plug blocks 11 are fixedly connected to both sides of the lower end of the second sheet metal 2, the plug blocks 11 are movably connected to the slots 10, positioning components 12 are fixedly connected to both sides of the second sheet metal 2, a groove 4 is provided at the lower end of the first sheet metal 1, a fan 5 is fixedly connected inside the groove 4, and a ventilation component 6 is provided on one side of the first sheet metal 1;

[0024] The pressure-resistant part 9 is composed of a first aluminum alloy plate 91, a polycarbonate thin layer 92, an elastic layer 93, and a second aluminum alloy plate 94 from the outside to the inside. One side of the first aluminum alloy plate 91 is fixedly connected to one side of the polycarbonate thin layer 92, one side of the polycarbonate thin layer 92 is fixedly connected to one side of the elastic layer 93, and one side of the elastic layer 93 is fixedly connected to one side of the second aluminum alloy. The polycarbonate thin layer 92 can enhance the overall impact resistance. The elastic layer 93 adopts a material with excellent elasticity and recovery properties, such as polyurethane or acrylate, as a buffer layer to effectively disperse and reduce impact force. The polycarbonate thin layer 92 and the elastic layer 93 are located between the first aluminum alloy plate 91 and the second aluminum alloy plate 94, so they can effectively improve the battery's impact resistance and extend its service life.

[0025] refer to Figure 2-3 The ventilation component 6 includes a first air hole 61, which is opened at the lower end of the first sheet metal 1. Second air holes 63 are opened on both sides of the first sheet metal 1 away from the first air hole 61, and the first air hole 61 is connected to the second air hole 63. Mounting grooves 62 are opened on both sides of the inner wall of one end of the groove 4. The first air hole 61 passes through the mounting groove 62. A dustproof net 64 is fixedly connected to the inside of the mounting groove 62, and the dustproof net 64 covers the fan 5; by opening the first air hole 61 and the second air hole 63 on the first sheet metal 1, the heat in the shell can be discharged under the action of the exhaust fan 5, thereby accelerating the heat dissipation. By setting the mounting groove 62, the fan 5 is fixed in the mounting groove 62, the first air hole 61 is connected to the mounting groove 62, so that the heat can be discharged from the shell, and by fixing the dustproof net 64 in the mounting groove 62, a large amount of dust can be prevented from entering the shell.

[0026] refer to Figure 3 A positioning angle steel 7 is fixedly connected to the inside of the first sheet metal 1, and four positioning angle steels 7 are provided. One side of the battery pack 3 is fitted and connected to one side of the positioning angle steel 7, and a mounting hole 8 is provided on the positioning angle steel 7. By setting and fixing four positioning angle steels 7 in the first sheet metal 1, the installation position of the battery pack 3 can be limited, so that a certain gap is left between the battery pack 3 and the outer shell to prevent the deformation of the outer shell from affecting the battery pack 3. The mounting hole 8 is provided for installing the battery, and the heat of the battery pack 3 can also be discharged through the mounting hole 8.

[0027] refer to Figure 4 The positioning assembly 12 includes a fixed block 121, which is fixedly connected to both sides of the second sheet metal 2. A slide groove 122 is provided inside the fixed block 121, and a slider 124 is slidably connected inside the slide groove 122. One end of the slider 124 is fixedly connected to a positioning rod 125. One side of the positioning rod 125 passes through the slot 10 and is plugged into the plug block 11. A screw rod 123 is rotatably connected inside the slide groove 122, and one end of the screw rod 123 is fixedly connected to a torsion block 126. By setting the positioning Component 12, the plug 11 of the second sheet metal 2 is inserted into the slot 10 of the first sheet metal 1, and then the torsion block 126 is rotated, the torsion block 126 drives the screw 123 to rotate, so that the positioning rod 125 on the outer surface of the screw 123 moves, and the slider 124 slides in the slide groove 122, so that the positioning rod 125 moves and is inserted into the plug 11, so that the plug 11 is fixed to the slot 10, thereby fixing the second sheet metal 2 to the first sheet metal 1. This design facilitates the connection between the first sheet metal 1 and the second sheet metal 2 and the subsequent disassembly.

[0028] Principle and advantages of use: put the battery pack 3 into the first sheet metal 1, four positioning angle steels 7 limit the battery pack 3 to prevent the battery pack 3 from being squeezed by a slight deformation of the shell, thereby improving the safety of the battery. The second sheet metal 2 is covered on the first sheet metal 1, and the plug 11 on the second sheet metal 2 is inserted into the slot 10 of the first sheet metal 1, and then the torsion block 126 is rotated, and the torsion block 126 drives the screw 123 to rotate, so that the slider 124 slides in the slide groove 122, and the positioning rod 125 can be moved and inserted into the plug 11 of the slot 10, so that the second sheet metal 2 is connected and fixed to the first sheet metal 1. The second sheet metal 2 adopts a first aluminum alloy plate 91, a polycarbonate thin layer 92, an elastic layer 93, and a second aluminum alloy plate 94, and adopts a multi-layer composite structure design to significantly enhance the impact resistance of the battery housing, thereby more effectively protecting the internal battery, reducing the potential safety hazards of existing power batteries, and extending the service life of the power battery. The fan 5 in the groove 4 works to discharge the heat in the first sheet metal 1 from the first air hole 61 into the groove 4, and then discharge it through the second air hole 63, which can accelerate the heat dissipation of the power battery, improve the heat dissipation efficiency, and ensure the normal operation of the power battery.

Claims

1. A power battery impact-resistant sheet metal component, comprising a first sheet metal (1), characterized in that: One side of the first sheet metal (1) is movably connected to the second sheet metal (2), a battery pack (3) is placed inside the first sheet metal (1), the first sheet metal (1) and the second sheet metal (2) are both composed of a pressure-resistant part (9), slots (10) are provided on both sides of the upper end of the first sheet metal (1), plug blocks (11) are fixedly connected to both sides of the lower end of the second sheet metal (2), the plug blocks (11) are movably connected to the slots (10), positioning components (12) are fixedly connected to both sides of the second sheet metal (2), a groove (4) is provided at the lower end of the first sheet metal (1), a fan (5) is fixedly connected inside the groove (4), and a ventilation component (6) is provided on one side of the first sheet metal (1); The pressure-resistant part (9) is composed of a first aluminum alloy plate (91), a polycarbonate thin layer (92), an elastic layer (93), and a second aluminum alloy plate (94) from the outside to the inside, one side of the first aluminum alloy plate (91) is fixedly connected to one side of the polycarbonate thin layer (92), one side of the polycarbonate thin layer (92) is fixedly connected to one side of the elastic layer (93), and one side of the elastic layer (93) is fixedly connected to one side of the second aluminum alloy.

2. The impact-resistant sheet metal component for a power battery according to claim 1, characterized in that: The ventilation assembly (6) comprises a first ventilation hole (61), the first ventilation hole (61) being formed at the lower end of the first sheet metal (1), second ventilation holes (63) being formed on both sides of the first sheet metal (1) away from the first ventilation hole (61), the first ventilation hole (61) being in communication with the second ventilation hole (63).

3. The impact-resistant sheet metal component for a power battery according to claim 2, characterized in that: Mounting grooves (62) are provided on both sides of the inner wall of one end of the groove (4), and the first air vent (61) passes through the mounting groove (62).

4. The impact-resistant sheet metal component for a power battery according to claim 3, characterized in that: A dustproof net (64) is fixedly connected to the interior of the installation groove (62), and the dustproof net (64) covers the fan (5).

5. The impact-resistant sheet metal component for a power battery according to claim 1, characterized in that: A positioning angle steel (7) is fixedly connected inside the first sheet metal (1), and four positioning angle steels (7) are provided. One side of the battery pack (3) is fittedly connected to one side of the positioning angle steel (7), and a mounting hole (8) is provided on the positioning angle steel (7).

6. The impact-resistant sheet metal component for a power battery according to claim 1, characterized in that: The positioning assembly (12) comprises a fixed block (121), the fixed block (121) being fixedly connected to two sides of the second sheet metal (2), a slide groove (122) being provided inside the fixed block (121), a slider (124) being slidably connected inside the slide groove (122), a positioning rod (125) being fixedly connected to one end of the slider (124), and one side of the positioning rod (125) passing through the slot (10) and plugging into the plug block (11).

7. The impact-resistant sheet metal component for a power battery according to claim 6, characterized in that: A screw rod (123) is rotatably connected inside the slide groove (122), and one end of the screw rod (123) is fixedly connected to a torsion block (126).

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