Hot-pressing apparatus

Abstract

The application relates to the technical field of battery production equipment, in particular to a hot-pressing equipment. The hot-pressing equipment comprises a positioning table, a heating assembly, a heat dissipation piece and a pressing mechanism. One side of the positioning table is detachably mounted on the heating assembly, and the other side faces the pressing mechanism and is used for positioning the battery cell, so that the battery cell is heated by the heating assembly and pressed by the pressing mechanism, and the hot-pressing adhesion of the battery cell and VHB is realized. The positioning table is detachable on the heating assembly. When the product needs to be iteratively changed, different positioning tables can be replaced according to actual needs, so that the positioning mechanism does not need to be replaced as a whole, thereby reducing the change cost. Meanwhile, the heat dissipation piece is mounted on the heating assembly, and the circuit board at one end of the battery cell is opposite to the heat dissipation piece. The heat dissipation piece is used for cooling the circuit board, so that the circuit board at one end of the battery cell is prevented from being damaged due to excessively high temperature when the battery cell is heated.

Description

Technical Field

[0001] This application relates to the field of battery production equipment technology, and in particular to a hot pressing device. Background Technology

[0002] In the battery cell manufacturing process, VHB (Very High Bond) foam double-sided tape needs to be attached to the cell, followed by hot pressing to ensure a tight bond between the VHB and the cell surface. Current hot pressing equipment typically includes a positioning platform and a pressurizing mechanism. The positioning platform is an integrated design, combining support and heating functions. It positions and heats the VHB-attached cell, and then the pressurizing mechanism applies pressure. While this integrated design simplifies the equipment structure to some extent, it reveals significant shortcomings in practical operation. For example, when product iteration or model change is required, the integrated design often necessitates replacing the entire positioning platform, leading to increased costs and wasted resources. Furthermore, one end of the battery cell has a circuit board. Since the cell and circuit board have different temperature resistances, current hot pressing equipment may damage the circuit board due to excessively high temperatures during the hot pressing process. Utility Model Content

[0003] The purpose of this invention is to provide a hot pressing device to reduce product changeover costs to a certain extent and to prevent the circuit boards on the battery cells from being damaged by high temperatures during hot pressing.

[0004] This utility model provides a hot pressing device, including a positioning platform, a heating component, a heat dissipation component, and a pressurizing mechanism;

[0005] One side of the positioning platform is detachably mounted on the heating assembly to heat the positioning platform through the heating assembly, and the other side of the positioning platform is used to provide positioning support for the battery cell.

[0006] One end of the battery cell is provided with a circuit board, and the heat sink is mounted on the heating assembly. The heat sink is arranged opposite to the circuit board to dissipate heat from the circuit board.

[0007] The pressurizing mechanism is used to pressurize the battery cells on the positioning platform.

[0008] Furthermore, the heating assembly includes a heating platform and a heating element;

[0009] The positioning platform is detachably stacked on the heating platform;

[0010] The heating element includes an electric heating wire disposed within the heating platform; or, the heating element includes a heating rod inserted within the heating platform.

[0011] Furthermore, the hot pressing device also includes a temperature sensor disposed on the positioning platform, the temperature sensor being used to detect the temperature of the positioning platform, and the temperature sensor being communicatively connected to the heating component.

[0012] Furthermore, the temperature sensor is a thermocouple, and an insertion hole is provided on the side wall of the positioning platform, into which the thermocouple is adapted to be inserted;

[0013] Alternatively, the temperature sensor may be an infrared temperature sensor, which is mounted on the heating assembly via a first bracket, with the detection end of the infrared temperature sensor positioned opposite the side wall of the positioning platform.

[0014] Furthermore, the hot pressing equipment also includes a material detection sensor;

[0015] The material detection sensor is mounted on the heating assembly via a second bracket, and the material detection sensor is used to detect the position of the battery cells on the positioning platform.

[0016] Furthermore, the positioning mechanism also includes a heat sink, which is located on one side of the positioning platform and is mounted on the heating assembly via a third bracket;

[0017] The circuit board of the battery cell on the positioning platform faces the heat sink, which is used to dissipate heat from the circuit board.

[0018] Furthermore, the heat sink is spaced apart from the circuit board, and the heat sink has an air outlet on the side facing the circuit board and an air inlet on the side facing away from the circuit board.

[0019] Furthermore, the heat dissipation component is a liquid cooling plate, which is attached to the circuit board.

[0020] Furthermore, it also includes a slide module, wherein the positioning platform, the heating component, and the heat sink are combined to form a positioning mechanism, and the positioning mechanism is mounted on the slide module;

[0021] The hot pressing equipment includes a feeding station and a hot pressing station. The pressurizing mechanism is located at the hot pressing station, and the sliding table module can drive the positioning mechanism to reciprocate between the feeding station and the hot pressing station.

[0022] Furthermore, the pressurizing mechanism includes a driving device, a first support, a second support, a pressure block, and an elastic element;

[0023] The pressurizing mechanism is located on one side of the positioning mechanism in the first direction. The driving device is fixedly installed, and the first support is installed on the driving end of the driving device. The driving device can drive the first support to reciprocate along the first direction.

[0024] The pressure block is slidably disposed on the first support along the first direction via the second support. The elastic element is disposed between the first support and the second support. The elastic force of the elastic element causes the second support to tend to move toward the positioning platform along the first direction.

[0025] Furthermore, a pressure sensor is provided on the first support, and the first support abuts against the elastic element through the pressure sensor. The pressure sensor is communicatively connected to the driving device.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0027] The hot pressing equipment provided by this utility model includes a positioning platform, a heating component, a heat sink, and a pressurizing mechanism. One side of the positioning platform faces the pressurizing mechanism, and the product (i.e., the battery cell with VHB attached) can be placed on the side of the positioning platform facing the pressurizing mechanism to provide positioning support for the product using the positioning platform. The heating component is located on the side of the positioning platform away from the pressurizing mechanism to heat the positioning platform and the product on the positioning platform.

[0028] The positioning platform is detachably installed on the heating component. When the product needs to be iterated and changed, different positioning platforms can be replaced on the heating component according to the positioning requirements of different products. This means that the positioning mechanism does not need to be replaced as a whole, and other parts other than the positioning platform can be reused, thereby significantly reducing the cost of product changeover and improving resource utilization efficiency.

[0029] The heat sink is mounted on the heating assembly. When the product (i.e., the battery cell with VHB attached) is positioned on the positioning platform, the circuit board at one end of the battery cell faces the heat sink and is positioned opposite to the heat sink. The heat sink is used to cool the circuit board, thereby preventing the circuit board at one end of the battery cell from being damaged due to excessive temperature when the heating assembly heats the positioning platform and the battery cell on the positioning platform. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of the hot pressing equipment provided in an embodiment of the present utility model;

[0032] Figure 2 A schematic diagram of the positioning platform, heating assembly, and heat dissipation component of the hot pressing equipment provided in this embodiment of the utility model;

[0033] Figure 3 A schematic diagram of the pressurizing mechanism of the hot pressing equipment provided in this embodiment of the utility model.

[0034] Figure label:

[0035] 1-Slide module, 11-Positioning platform, 12-Heating platform, 13-Heating element, 14-Temperature sensor, 15-Heat dissipation element, 16-Material detection sensor, 2-Pressure mechanism, 21-Drive device, 22-Pressure block, 23-First support, 24-Second support, 25-Elastic element, 26-Pressure sensor, 27-Slide rail. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0037] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0038] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The following reference Figures 1 to 3 This application describes a hot pressing apparatus according to some embodiments.

[0042] This application provides a hot pressing device, such as... Figure 1 and Figure 2 As shown, the hot pressing equipment includes a positioning platform 11, a heating component, a heat sink, and a pressurizing mechanism 2. One side of the positioning platform 11 faces the pressurizing mechanism 2. The product (i.e., the battery cell with VHB attached) can be placed on the side of the positioning platform 11 facing the pressurizing mechanism 2 to provide positioning support for the product using the positioning platform 11. The heating component is located on the side of the positioning platform 11 away from the pressurizing mechanism 2, and the positioning platform 11 is mounted on the heating component to heat the positioning platform 11 and the product on the positioning platform 11 using the heating component. The pressurizing mechanism 2 is used to press the product onto the positioning platform 11 to apply pressure to the product, so that the VHB is pressed tightly onto the surface of the battery cell, thereby completing the hot pressing bonding of the battery cell and VHB.

[0043] The heat sink is mounted on the heating assembly, specifically on the side wall of the heating platform (hereinafter referred to as the heating assembly) via a third bracket. When the product (i.e., the battery cell with VHB attached) is positioned on the positioning platform, the circuit board at one end of the battery cell faces and is positioned opposite the heat sink. The heat sink is used to cool the circuit board, thereby preventing damage to the circuit board at one end of the battery cell due to overheating when the heating assembly heats the positioning platform and the battery cell on the positioning platform. For example, the third bracket includes a fifth connecting part and a sixth connecting part. The fifth connecting part can be connected to the side wall of the heating platform via fasteners, and the heat sink can be assembled onto the sixth connecting part via fasteners, with the heat sink facing the circuit board at one end of the battery cell.

[0044] Meanwhile, the positioning platform 11 is detachably installed on the heating component, so when the product needs to be iterated and changed, different positioning platforms 11 can be replaced on the heating component according to the positioning requirements of different products, so that other components other than the positioning platform 11 can be reused, thereby significantly reducing the cost of product changeover and improving resource utilization efficiency.

[0045] In one embodiment of this application, preferably, as Figure 2As shown, the heating assembly includes a heating platform 12 and a heating element 13. The heating element 13 is disposed within the heating platform 12, and the positioning platform 11 is detachably stacked on the heating platform 12. Both the positioning platform 11 and the heating platform 12 are made of materials that facilitate heat conduction. Thus, when the heating element 13 is working, the heat released by the heating element 13 can be transferred to the product on the positioning platform 11 through the heating platform 12 and the positioning platform 11, providing heat for the hot-press bonding of the VHB and the battery cell. Furthermore, by using the stacking method of the heating platform 12 and the positioning platform 11, the heat released by the heating element 13 can be transferred to the positioning platform 11 more evenly, thereby making the product on the positioning platform 11 evenly heated.

[0046] In this embodiment, preferably, the heating element 13 is an electric heating element 13, which is energized to perform heating.

[0047] Preferably, the heating element 13 includes an electric heating wire, and the side surface of the heating platform 12 facing the positioning platform 11 is a heating plane, and the electric heating wire is evenly distributed in the heating platform 12 along the direction of the heating plane.

[0048] Or, such as Figure 2 As shown, the heating element 13 includes electric heating rods. Multiple mounting holes are provided at intervals on the side wall of the heating platform 12 connected to its heating plane, and multiple electric heating rods are inserted into the multiple mounting holes one by one.

[0049] In this embodiment, preferably, as follows: Figure 2 As shown, the hot pressing equipment also includes a temperature sensor 14, which is used to detect the temperature of the positioning platform 11. The temperature sensor 14 is communicatively connected to the heating assembly, specifically to the power supply unit of the heating element 13, to control the power supply and thus the heating temperature. For example, when the temperature sensor 14 detects that the temperature of the positioning platform 11 is higher than a predetermined temperature range, it reduces the power supply of the heating element 13 to lower the heating temperature; when the temperature sensor 14 detects that the temperature of the positioning platform 11 is lower than the predetermined temperature range, it increases the power supply of the heating element 13 to raise the heating temperature.

[0050] In this embodiment, preferably, as follows: Figure 2 As shown, the temperature sensor 14 is a thermocouple. A socket is provided on the side wall of the positioning platform 11, allowing the thermocouple to be inserted into the socket to detect the temperature of the positioning platform 11. When replacing the positioning platform 11, the thermocouple can be simply pulled out of the socket.

[0051] Alternatively, the temperature sensor 14 can be an infrared temperature sensor 14. The infrared temperature sensor 14 is fixed to the side wall of the heating platform 12 of the heating assembly via a first bracket, and the detection end of the infrared temperature sensor 14 is opposite to the side wall of the positioning platform 11, thereby using the infrared temperature sensor 14 to detect the temperature of the positioning platform 11. Furthermore, by using an external infrared temperature sensor 14, it is easier to replace the positioning platform 11 during product iteration and model changeover. For example, the first bracket includes a first connecting part and a second connecting part connected together. The first connecting part is fastened to the side wall of the heating platform 12 by fasteners, and the second connecting part is opposite to the side wall of the positioning platform 11 and spaced at a predetermined distance. The second connecting part is provided with a first mounting hole for mounting the infrared temperature sensor 14, so that the detection end of the infrared temperature sensor 14 is opposite to the side wall of the positioning platform 11.

[0052] In one embodiment of this application, preferably, as Figure 2 As shown, the hot pressing equipment also includes a material detection sensor 16, such as a photoelectric sensor. The material detection sensor 16 is mounted on the heating assembly via a second bracket, specifically on the side wall of the heating platform 12. The detection end of the material detection sensor 16 extends to the side of the positioning platform 11 used to support the battery cell, and when the battery cell is placed on the positioning platform 11, the detection end of the material detection sensor 16 is opposite to one side of the battery cell. This allows for the use of the material sensor to detect the position of the product on the positioning platform 11.

[0053] For example, the second bracket includes a third connecting part and a fourth connecting part connected to each other. The third connecting part is fastened to the side wall of the heating platform 12 by fasteners. The fourth connecting part extends to the top of the positioning platform and is provided with a second mounting hole for mounting the material detection sensor 16, so that the detection end of the material detection sensor 16 can be opposite to one side of the battery cell.

[0054] In this embodiment, preferably, as follows: Figure 2 As shown, the heat sink 15 uses air cooling to dissipate heat and cool the circuit board. Specifically, the heat sink 15 is spaced apart from the circuit board. The heat sink 15 has an air outlet on one side facing the circuit board and an air inlet on the other side. The heat sink 15 can be connected to an external air supply device through the air inlet, so that air can be blown onto the circuit board through the air outlet to achieve air cooling of the circuit board.

[0055] Alternatively, the heat sink 15 can use liquid cooling to dissipate heat and cool the circuit board. Specifically, the heat sink 15 is a liquid cooling plate that can be in contact with the circuit board. The liquid cooling plate has a liquid cooling channel that is connected to an external refrigerant supply device, allowing the liquid refrigerant to circulate within the liquid cooling channel of the liquid cooling plate and carry away the heat from the circuit board, thereby achieving heat dissipation and cooling of the circuit board.

[0056] In one embodiment of this application, preferably, as Figure 1 As shown, the hot pressing equipment also includes a slide module 1, a positioning platform 11, a heating component, and a heat sink 15, which are assembled together to form a positioning mechanism, which is mounted on the slide module 1. The hot pressing equipment includes a loading station and a hot pressing station. The pressurizing mechanism 2 is located at the hot pressing station. One end of the slide module 1 extends to the loading station, and the other end extends to the hot pressing station. The slide module 1 can drive the positioning platform 11 to reciprocate between the loading station and the hot pressing station. When the positioning platform 11 moves to the loading station under the drive of the slide module 1, the external conveying mechanism can place the product on the positioning platform 11. When the material detection sensor 16 detects the product on the positioning platform 11, the positioning platform 11 can move to the hot pressing station under the drive of the slide module 1. At the hot pressing station, the positioning platform 11 is opposite to the pressurizing mechanism 2, so that the hot pressing bonding of the battery cell and VHB can be completed by the pressurizing mechanism 2.

[0057] In one embodiment of this application, preferably, as Figure 1 and Figure 3 As shown, the pressurizing mechanism 2 is located on one side of the positioning platform 11 in the first direction. The pressurizing mechanism 2 includes a drive device 21 and a pressing block 22. The drive device 21 is fixedly installed (the bracket for fixing the drive device 21 is not shown in the figure). The pressing block 22 is installed on the drive end of the drive device 21. At the hot pressing station, the pressing block 22 can be arranged opposite to the positioning platform 11 in the first direction. The drive device 21 can drive the pressing block 22 to move closer to or away from the positioning platform 11 in the first direction, so that the pressing block 22 can move towards the positioning platform 11 under the drive of the drive device 21 to press the product on the platform.

[0058] The pressurizing mechanism 2 also includes a first support 23, a second support 24, and an elastic element 25. The pressing block 22 is mounted on the drive end of the drive device 21 via the first support 23 and the second support 24. Specifically, the first support 23 is mounted on the drive end of the drive device 21, which can drive the first support 23 to reciprocate along a first direction. The pressing block 22 is mounted on the second support 24, which is slidably disposed on the first support 23 along the first direction via a slide rail 27. The first support 23 and the second support 24 are abutted against each other by the elastic element 25. The elastic force of the elastic element 25 causes the second support 24 to tend to move towards the positioning platform 11 along the first direction. Thus, when the pressing block 22 is pressed against the product under the drive of the drive device 21, the pressing block 22 is elastically pressed against the product.

[0059] In this embodiment, preferably, a pressure sensor 26 is also provided on the first support 23. The first support 23 abuts against the elastic element 25 through the pressure sensor 26, so that the pressure sensor 26 can detect the pressure exerted on the product by the pressure block 22. The pressure sensor 26 is communicatively connected to the drive device 21. When the pressure sensor 26 detects that the pressure exerted on the product by the pressure block 22 reaches a preset pressure range, the pressure sensor 26 can control the drive device 21 to stop, so as to avoid damage to the product due to excessive pressure.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hot pressing device, characterized in that, Includes a positioning platform, heating components, heat dissipation components, and a pressurization mechanism; One side of the positioning platform is detachably mounted on the heating assembly to heat the positioning platform through the heating assembly, and the other side of the positioning platform is used to provide positioning support for the battery cell. One end of the battery cell is provided with a circuit board, and the heat sink is mounted on the heating assembly. The heat sink is arranged opposite to the circuit board to dissipate heat from the circuit board. The pressurizing mechanism is used to pressurize the battery cells on the positioning platform.

2. The hot pressing equipment according to claim 1, characterized in that, The heating assembly includes a heating platform and a heating element; The positioning platform is detachably stacked on the heating platform; The heating element includes an electric heating wire disposed within the heating platform; or, the heating element includes a heating rod inserted within the heating platform.

3. The hot pressing equipment according to claim 1, characterized in that, The hot pressing equipment also includes a temperature sensor disposed on the positioning platform. The temperature sensor is used to detect the temperature of the positioning platform and is communicatively connected to the heating component.

4. The hot pressing equipment according to claim 3, characterized in that, The temperature sensor is a thermocouple, and the positioning platform has a socket on its side wall, into which the thermocouple is inserted; or... The temperature sensor is an infrared temperature sensor, which is mounted on the heating assembly via a first bracket. The detection end of the infrared temperature sensor is positioned opposite to the side wall of the positioning platform.

5. The hot pressing equipment according to claim 1, characterized in that, The hot pressing equipment also includes a material detection sensor; The material detection sensor is mounted on the heating assembly via a second bracket, and the material detection sensor is used to detect the position of the battery cells on the positioning platform.

6. The hot pressing equipment according to claim 1, characterized in that, The heat sink is spaced apart from the circuit board. The heat sink has an air outlet on the side facing the circuit board and an air inlet on the side away from the circuit board.

7. The hot pressing equipment according to claim 1, characterized in that, The heat dissipation component is a liquid cooling plate, which is attached to the circuit board.

8. The hot pressing equipment according to claim 1, characterized in that, It also includes a slide module, wherein the positioning platform, the heating component, and the heat sink are combined to form a positioning mechanism, and the positioning mechanism is mounted on the slide module; The hot pressing equipment includes a feeding station and a hot pressing station. The pressurizing mechanism is located at the hot pressing station, and the sliding table module can drive the positioning mechanism to reciprocate between the feeding station and the hot pressing station.

9. The hot pressing equipment according to claim 8, characterized in that, The pressurizing mechanism includes a driving device, a first support, a second support, a pressure block, and an elastic element; The pressurizing mechanism is located on one side of the positioning mechanism in the first direction. The driving device is fixedly installed, and the first support is installed on the driving end of the driving device. The driving device can drive the first support to reciprocate along the first direction. The pressure block is slidably disposed on the first support along the first direction via the second support. The elastic element is disposed between the first support and the second support. The elastic force of the elastic element causes the second support to tend to move toward the positioning platform along the first direction.

10. The hot pressing equipment according to claim 9, characterized in that, The first support is equipped with a pressure sensor, and the first support abuts against the elastic element through the pressure sensor. The pressure sensor is communicatively connected to the driving device.

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