Lithium battery shell stamping die with good heat dissipation effect

Abstract

The utility model discloses a lithium battery shell stamping die with a good heat dissipation effect, and relates to the technical field of lithium battery shell dies, the lithium battery shell stamping die comprises a workbench, an upper die holder and a lower die holder, the top of the workbench is provided with a supporting frame, the bottom of the supporting frame is provided with an electric pressing rod, and the bottom of the electric pressing rod is provided with the upper die holder; a lower die base is fixed to the top of the workbench, guide rails are arranged on the two sides of the bottom of the lower die base, and heat dissipation assemblies are arranged on the guide rails. The heat dissipation assembly is arranged, the water flow pipe is connected with an external cooling water circulation device through the water outlet and the water inlet to form a heat dissipation loop, the electric fan is started to rotate in the process of generating heat through stamping, cooling liquid in the water flow pipe is cooled, heat dissipation holes are formed, air circulation can be enhanced, and therefore the heat dissipation effect is enhanced. The problems that an existing cooling tank is exposed outside, cooling liquid is prone to being polluted, and the cooling cost is increased if purification is needed are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery shell molds, in particular to a lithium battery shell stamping mold with good heat dissipation effect. Background Art

[0002] Lithium battery is a rechargeable battery, mainly composed of electrodes (positive and negative electrodes), electrolyte and shell. It has the advantages of high energy density, long cycle life and no memory effect, and is widely used in portable electronic devices, electric vehicles, energy storage systems and other fields. As an important component of lithium batteries, the material, design and manufacturing process of lithium battery shell have an important impact on the performance, safety and service life of the battery. During production, stamping dies are required to stamp the embryo.

[0003] A shell stamping die for lithium battery production with publication number CN216679861U includes a die assembly, including a die inner shell, a die outer shell arranged outside the die inner shell, a cooling groove formed between the die inner shell and the die outer shell, a liquid inlet pipe connected to the side wall of the die outer shell, a liquid outlet pipe connected to the opposite side of the die outer shell and a sewage delivery pipe connected to the side wall of the die outer shell, a limit support assembly, and a guide assembly. The utility model forms a cooling method of cold cycle through the set die structure, reduces the temperature generated by stamping in real time, and through the mutual cooperation of the set limit support structure and the guide structure, it can achieve the problem of stabilizing the two die shells, facilitate the regular cleaning of the cold cycle environment, and ensure the cooling effect.

[0004] However, in the above scheme, the cooling groove is exposed to the outside, and the coolant is easily contaminated. If purification is required, the cooling cost will increase. In addition, the heat dissipation method in the document is single, and may not achieve a good heat dissipation effect. The consideration is not comprehensive enough. Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a lithium battery shell stamping die with good heat dissipation effect is proposed. Utility Model Content

[0005] The utility model aims to provide a lithium battery shell stamping die with good heat dissipation effect to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery shell stamping die with good heat dissipation effect, comprising a workbench, an upper die seat and a lower die seat, a support frame is installed on the top of the workbench, an electric pressure rod is provided at the bottom of the support frame, an upper die seat is provided at the bottom of the electric pressure rod, a lower die seat is fixed on the top of the workbench, guide rails are provided on both sides of the bottom of the lower die seat, a heat dissipation component is provided on the guide rails, the heat dissipation component includes a heat dissipation plate that slides inside the guide rails using plug-in plates on both sides, a water flow pipe is provided inside the heat dissipation plate, the water flow pipe is provided with a water outlet and a water inlet, two electric fans are symmetrically installed at the bottom of the heat dissipation plate, and a plurality of heat dissipation holes are distributed in a matrix on the top and bottom of the heat dissipation plate.

[0007] Preferably, a heat-conducting aluminum block is provided in the inner cavity on each of the four sides of the lower mold base. The heat-conducting aluminum block is placed inside the lower mold base through fixing rods fixed at the four corners, and heat-conducting silicone is pasted on both sides of the heat-conducting aluminum block to connect it with the inner and outer cavities of the lower mold base.

[0008] Preferably, the lower mold base is rotatably connected with two locking blocks on the heat sink insertion side. After the heat sink is inserted, the locking block is rotated and the other end is connected to the corresponding hole opened in the heat sink using bolts.

[0009] Preferably, a plurality of heat dissipation and weight reduction holes are provided at the four corners of the side surface and the four corners of the bottom surface of the lower mold base, and the size and position of the heat dissipation and weight reduction holes are ensured not to affect the use strength of the mold.

[0010] Preferably, two quick positioning grooves are provided on one side of the lower die base, and two quick positioning pins are fixed on the top of the workbench, and the quick positioning grooves cooperate with the quick positioning pins to position the lower die base.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The utility model provides a lithium battery shell stamping die with good heat dissipation effect, in which a heat dissipation component is arranged, and a water flow pipe is connected to an external cooling water circulation device through a water outlet and a water inlet to form a heat dissipation circuit, and an electric fan is started to rotate during the process of stamping heat generation to cool the coolant inside the water flow pipe, and heat dissipation holes are arranged to enhance air circulation and thus enhance the heat dissipation effect, thereby solving the problem that the existing cooling tank is exposed to the outside, the coolant is easily contaminated, and the cooling cost is increased if purification is required.

[0013] 2. The utility model provides a lithium battery shell stamping die with good heat dissipation effect, in which a heat-conducting aluminum block and a heat-conducting silicone are arranged. Due to the high thermal conductivity of the thermally conductive silicone and the excellent thermal conductivity of the heat-conducting aluminum block, the heat generated inside the lower die seat can be quickly dispersed to the surrounding environment, which can significantly improve the heat dissipation efficiency and solve the problem that the existing heat dissipation method is single and may not achieve a good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of a lithium battery housing stamping die with good heat dissipation effect from the first perspective of the utility model;

[0015] Figure 2 This is a schematic diagram of the third perspective structure of a lithium battery housing stamping die with good heat dissipation effect according to the utility model;

[0016] Figure 3 This is a front view of a lithium battery housing stamping die with good heat dissipation effect according to the utility model;

[0017] Figure 4 This is a schematic diagram of the three-dimensional structure of a lower die base of a lithium battery shell stamping die with good heat dissipation effect according to the utility model;

[0018] Figure 5 This is a top view of a cross-sectional view of a lower die base of a lithium battery casing stamping die with good heat dissipation effect according to the utility model;

[0019] Figure 6 This is a front view cross-sectional view of a lower die seat of a lithium battery shell stamping die with good heat dissipation effect according to the utility model;

[0020] Figure 7 This is a schematic diagram of the three-dimensional structure of a heat-conducting component of a lithium battery housing stamping die with good heat dissipation effect according to the utility model;

[0021] Figure 8 This is a three-dimensional cross-sectional view of a heat dissipation component of a lithium battery shell stamping die with good heat dissipation effect according to the utility model.

[0022] In the figure: 1. workbench; 101. support frame; 102. quick positioning pin; 2. electric pressure rod; 3. upper die base; 4. lower die base; 401. guide rail; 402. locking block; 403. pressure plate groove; 4031. bolt; 4032. gasket; 404. quick positioning groove; 405. heat dissipation and weight reduction hole; 5. heat dissipation assembly; 501. heat dissipation plate; 502. plug-in board; 503. water flow pipe; 504. water outlet; 505. water inlet; 506. electric fan; 507. heat dissipation hole; 6. thermal conductive aluminum block; 601. thermal conductive silicone; 602. fixing rod. DETAILED DESCRIPTION

[0023] 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.

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0025] Combination Figure 1-Figure 8 The utility model discloses a lithium battery shell stamping die with good heat dissipation effect, comprising a workbench 1, an upper die seat 3 and a lower die seat 4, a support frame 101 is installed on the top of the workbench 1, an electric pressure rod 2 is provided at the bottom of the support frame 101, an upper die seat 3 is provided at the bottom of the electric pressure rod 2, a lower die seat 4 is fixed on the top of the workbench 1, guide rails 401 are provided on both sides of the bottom of the lower die seat 4, a heat dissipation component 5 is provided on the guide rail 401, the heat dissipation component 5 includes a heat dissipation plate 501 that slides inside the guide rail 401 using plug plates 502 on both sides, a water flow pipe 503 is provided inside the heat dissipation plate 501, the water flow pipe 503 is provided with a water outlet 504 and a water inlet 505, two electric fans 506 are symmetrically installed at the bottom of the heat dissipation plate 501, and a plurality of heat dissipation holes 507 are distributed in a matrix on the top and bottom of the heat dissipation plate 501.

[0026] Specifically, in this case, when in use, the lower die seat 4 is connected to the top of the workbench 1, the upper die seat 3 is connected to the bottom of the electric pressure rod 2 at the bottom of the support frame 101, and the plug plates 502 on both sides of the heat sink 501 are slid into the guide rail 401. After the plug plates 502 slide to the bottom of the guide rail 401 and stay still, they are connected. Then, the water outlet 504 and the water inlet 505 are connected to the external cooling water circulation device, and a heat dissipation circuit is formed with the water flow pipe 503. The heat generated during the stamping process will be dissipated from the lower die seat 4, and the heat sink 501 contacts the lower die seat 4 to absorb its heat. The water flow pipe 503 is installed inside the heat sink 501 to take away the heat on the heat sink 501. The electric fan 506 is started to rotate to cool the coolant inside the water flow pipe 503, and the air circulation can also be strengthened to enhance the heat dissipation effect. The top and bottom of the heat sink 501 are matrix-distributed with multiple heat dissipation holes 507, which can significantly strengthen the air circulation, thereby helping to dissipate heat and achieving a better heat dissipation effect.

[0027] Combination Figure 3-Figure 7, a heat-conducting aluminum block 6 is arranged in the inner cavity on each of the four sides of the lower die base 4, and the heat-conducting aluminum block 6 is placed inside the lower die base 4 through fixing rods 602 fixed at the four corners, and heat-conducting silicone 601 is pasted on both sides of the heat-conducting aluminum block 6 to connect it with the inner and outer cavities of the lower die base 4. The heat generated during the stamping process is dissipated through the lower die base 4. When the distance between the inner layer and the outer layer of the lower die base 4 is too large, the heat dissipation will be significantly deteriorated, and heat-conducting aluminum blocks 6 are arranged in the inner cavities on the four sides of the lower die base 4, and heat-conducting silicone 601 is pasted between the inner wall of the lower die base 4 and the heat-conducting aluminum block 6. When heat is generated during production, the heat is first It is first absorbed by the thermally conductive silicone 601 through the lower mold base 4. Due to the high thermal conductivity of the thermally conductive silicone 601, the heat can be quickly transferred to the thermally conductive aluminum block 6 in close contact with it. After receiving the heat, the thermally conductive aluminum block 6 uses its excellent thermal conductivity to disperse the heat to the entire aluminum block, and dissipates the heat to the surrounding environment through the contact with the thermally conductive silicone 601 connected to the outer lower mold base 4 and the convection of air. The cooperation between the thermally conductive aluminum block 6 and the thermally conductive silicone 601 can significantly improve the heat dissipation efficiency. Placing it inside the lower mold base 4 by the fixing rod 602 can improve the stability of the device.

[0028] Several heat dissipation and weight reduction holes 405 are provided at the four corners of the side and the four corners of the bottom of the lower mold base 4. The size and position of the heat dissipation and weight reduction holes 405 do not affect the strength of the mold. The holes at the four corners can promote air convection inside and outside the lower mold base 4, speed up the heat dissipation speed, further improve the heat dissipation efficiency, and reduce the material usage of the mold without reducing the strength of the mold, so as to achieve the purpose of reducing the weight of the mold, which not only helps to reduce the manufacturing cost of the mold, but also facilitates the transportation and installation of the mold.

[0029] Multiple heat dissipation grooves are arranged side by side and equidistantly on the surrounding surfaces of the upper mold base 3 and the lower mold base 4. Compared with flush surfaces, the contact area with the air can be increased under the state of equal volume, thereby achieving better heat dissipation effect. In addition, this structure reduces the amount of material used while ensuring the strength and rigidity of the mold, which helps to reduce the manufacturing cost of the mold and reduce the overall weight of the mold.

[0030] Combination Figure 1-Figure 5The lower mold base 4 is located on the insertion side of the heat sink 501 and is rotatably connected with two locking blocks 402. After the heat sink 501 is inserted, the locking block 402 is rotated and the other end is connected to the corresponding hole of the heat sink 501 using a fixing bolt. The heat sink 501 is rotatably connected with the locking block 402 in the insertion direction. When the plug-in plate 502 slides to the bottom of the guide rail 401 and does not move, the two locking blocks 402 are respectively rotated 90° so that the fixing holes are aligned with the corresponding holes of the heat sink 501, and then fixed with fixing bolts, thereby stably fixing the heat sink 501 inside the lower mold base 4.

[0031] Two pressure plate grooves 403 are respectively provided on both sides of the lower die base 4, and the pressure plate grooves 403 are fixed to the top of the workbench 1 in cooperation with bolts 4031, and a gasket 4032 is provided between the bolts 4031 and the pressure plate grooves 403. Two pressure plate grooves 403 are used at two locations of the lower die base 4, and the lower die base 4 is fixed to the top of the workbench 1 in cooperation with the bolts 4031 to avoid displacement or shaking during the processing, thereby ensuring the stability of the lower die base 4 during the processing, improving the processing accuracy and product quality, and this method is simple to operate and convenient for quick installation and disassembly of the lower die base 4, thereby shortening the time for mold replacement and adjustment and improving production efficiency, and arranging the gasket 4032 between the bolts 4031 and the lower die base 4 can enhance the stability of the connection and provide a certain buffer to prevent the bolts 4031 from causing wear on the surface of the pressure plate groove 403.

[0032] Two quick positioning grooves 404 are provided on one side of the lower die base 4, and two quick positioning pins 102 are fixed on the top of the workbench 1. The quick positioning grooves 404 cooperate with the quick positioning pins 102 to position the lower die base 4. Two quick positioning grooves 404 are provided on one side of the lower die base 4 to cooperate with the quick positioning pins 102 fixed on the top of the workbench 1 to position and initially fix the lower die base 4. The quick positioning pins 102 and the quick positioning grooves 404 can achieve high-precision positioning, reduce processing errors caused by inaccurate positioning, make the clamping process of the lower die base 4 faster and simpler, and can quickly determine the front and back of the clamping of the lower die base 4, which can greatly shorten the adjustment and clamping time and improve production efficiency.

[0033] 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.

[0034] 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 lithium battery housing stamping die with good heat dissipation effect, comprising a workbench (1), an upper die base (3) and a lower die base (4), characterized in that: A support frame (101) is installed on the top of the workbench (1), an electric pressure rod (2) is provided at the bottom of the support frame (101), an upper mold base (3) is provided at the bottom of the electric pressure rod (2), a lower mold base (4) is fixed on the top of the workbench (1), guide rails (401) are provided on both sides of the bottom of the lower mold base (4), and a heat dissipation component (5) is provided on the guide rails (401); The heat dissipation assembly (5) comprises a heat dissipation plate (501) with plug plates (502) on both sides sliding inside a guide rail (401), a water flow pipe (503) being provided inside the heat dissipation plate (501), the water flow pipe (503) being provided with a water outlet (504) and a water inlet (505), two electric fans (506) being symmetrically installed at the bottom of the heat dissipation plate (501), and a plurality of heat dissipation holes (507) being distributed in a matrix at the top and bottom of the heat dissipation plate (501).

2. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: A heat-conducting aluminum block (6) is disposed in each of the four inner cavities on the lower mold base (4). The heat-conducting aluminum block (6) is placed inside the lower mold base (4) via fixing rods (602) fixed at the four corners, and heat-conducting silicone rubber (601) is adhered to both sides of the heat-conducting aluminum block (6) to connect it to the inner and outer cavities of the lower mold base (4).

3. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: The lower die base (4) is located on the insertion side of the heat sink (501) and is rotatably connected to two locking blocks (402). After the heat sink (501) is inserted, the locking block (402) is rotated and the other end is connected to the corresponding hole of the heat sink (501) using bolts.

4. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: The four corners of the side surface and the four corners of the bottom surface of the lower mold base (4) are all provided with a plurality of heat dissipation and weight reduction holes (405), and the size and position of the heat dissipation and weight reduction holes (405) are both ensured not to affect the use strength of the mold.

5. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: The upper die seat (3) and the lower die seat (4) are provided with a plurality of heat dissipation grooves arranged side by side and at equal distances on their surrounding surfaces.

6. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: Two pressure plate grooves (403) are respectively arranged on both sides of the lower die base (4); the pressure plate grooves (403) are fixed to the top of the workbench (1) in cooperation with bolts (4031); and a gasket (4032) is arranged between the bolts (4031) and the pressure plate grooves (403).

7. A lithium battery housing stamping die with good heat dissipation effect according to claim 1, characterized in that: Two quick positioning grooves (404) are arranged on one side of the lower die base (4), and two quick positioning pins (102) are fixed on the top of the workbench (1). The quick positioning grooves (404) cooperate with the quick positioning pins (102) to position the lower die base (4).

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