Lithium battery aluminum plastic film heat sealing mechanism containing multiple heat sources

Abstract

The utility model relates to the technical field of battery processing, and particularly provides a lithium battery aluminum-plastic film heat sealing mechanism containing a plurality of heat sources. The lithium battery aluminum plastic film heat sealing mechanism with the multiple heat sources comprises a rack assembly, an upper sealing head mounting assembly, an upper sealing head assembly, a lower sealing head assembly, a lower sealing head mounting assembly, an upper driving air cylinder and a lower driving air cylinder. Wherein the upper sealing head mounting assembly comprises a rotating shaft and a compatible heat sealing thickness adjusting air cylinder, so that the upper sealing head assembly can be adjusted to float left and right according to the actual heat sealing condition, and the upper sealing head mounting assembly is suitable for heat sealing of aluminum plastic films with more thicknesses and longer thicknesses; and the temperature uniformity of the upper sealing head and the lower sealing head is improved, so that the uniformity of the heat sealing thickness is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a lithium battery aluminum-plastic film heat sealing mechanism containing multiple heat sources. Background Technology

[0002] Existing heat-sealing mechanisms for sealing the aluminum-plastic film edges of soft-pack lithium batteries generally use a heated sealing head to seal the liquid injection port of the aluminum-plastic film. The heat source for the sealing head is a cylindrical heater, with one cylindrical heater installed parallel to the length of a heat storage block, as shown in the structure below. Figure 1 .

[0003] Existing heat sealing mechanisms have the following drawbacks:

[0004] 1) The upper and lower sealing heads of the aluminum-plastic film heat sealing mechanism are generally fixed vertically to the central axis of the power source (cylinder or motor). The upper sealing head cannot float left and right according to the actual heat sealing situation, and cannot adapt to the thickness changes during the heat melting process of the aluminum-plastic film. This will result in uneven heat melting thickness of the PP layer inside the aluminum-plastic film and large differences in the thickness of the sealing edge of the entire aluminum-plastic film.

[0005] 2) After the lower end cap movement mechanism rises, it has no auxiliary support. During the heat sealing process, it will move up and down due to the downward pressure from the upper end cap, which will cause abnormal fluctuations in the heat sealing thickness.

[0006] 3) The upper and lower end caps of the heat sealing mechanism are generally exposed to the surface of the heat storage block, resulting in poor heat preservation. For longer batteries, the corresponding aluminum-plastic film sealing edge also needs to be longer. In actual measurements, the temperature on the existing heat storage block varies greatly from the front end to the back end, which will cause uneven sealing edge thickness after the aluminum-plastic film is melted, leading to battery leakage or poor insulation. Utility Model Content

[0007] In view of the shortcomings of the current technical solution, in order to solve the problems of the upper sealing head being fixed and unable to float left and right in the existing heat sealing mechanism, and the uneven thickness of the PP layer inside the aluminum-plastic film during heat melting, this application provides a lithium battery aluminum-plastic film heat sealing mechanism with multiple heat sources.

[0008] In a first aspect, this application provides a sealing head for secondary liquid injection sealing of a pouch battery:

[0009] A lithium battery aluminum-plastic film heat sealing mechanism with multiple heat sources includes a frame assembly.

[0010] Top end cap mounting components,

[0011] Upper end cap assembly,

[0012] Lower head assembly,

[0013] Lower head mounting components,

[0014] Upper drive cylinder,

[0015] and lower drive cylinder;

[0016] The upper drive cylinder and the lower drive cylinder are mounted on the frame assembly;

[0017] The upper end cap mounting assembly includes a rotating shaft, a heat sealing thickness adjusting cylinder, and a slider connecting seat;

[0018] The slider connecting seat is connected to the output end of the upper drive cylinder; the slider connecting seat is slidably connected to the frame assembly; the rotating shaft is rotatably connected to the slider connecting seat; at least two of the heat sealing thickness adjusting cylinders are located on the slider connecting seat;

[0019] The upper end cap assembly includes an upper end cap and an upper heat storage block for heating the upper end cap; the upper heat storage block is fixedly connected to the rotating shaft; the output end of the heat sealing thickness adjusting cylinder abuts against the upper heat storage block;

[0020] The lower end cap assembly includes a lower end cap disposed opposite to the upper end cap in the sliding direction of the lower end cap mounting assembly, and a lower heat storage block for heating the lower end cap;

[0021] The lower head mounting assembly includes a lower connecting seat that is slidably connected to the frame assembly; one side of the lower connecting seat is connected to the output end of the lower drive cylinder, and the other side is fixedly connected to the lower head assembly;

[0022] The upper and lower heat storage blocks are equipped with multiple heat source devices. A rotating shaft and a matching heat sealing thickness adjustment cylinder are provided. By adjusting the length of the cylinder's output end, the upper sealing head assembly can be adjusted according to the actual heat sealing situation, allowing it to float left and right. This is suitable for heat sealing aluminum-plastic films of greater thickness and length, resulting in a more uniform heat sealing thickness. Furthermore, multiple heat source devices are arranged along the length of the heat storage block to improve the temperature uniformity of the upper and lower sealing heads, thereby improving the uniformity of the heat sealing thickness.

[0023] Furthermore, the angle between the orientation of the heat source device and the length direction of the heat storage block is less than 180°.

[0024] Furthermore, the lower sealing head is provided with a heat-sealing thickness limiting post.

[0025] Setting heat seal thickness limit posts further improves the uniformity of heat seal thickness.

[0026] Furthermore, the upper end cap assembly also includes

[0027] An upper connecting plate for connecting to the rotating shaft and a height-adjustable heat-sealing thickness adjustment screw set on the upper connecting plate;

[0028] The heat-sealing thickness adjusting screw abuts against the output end of the heat-sealing thickness adjusting cylinder.

[0029] The height of the adjusting screw can be adjusted by adjusting the heat sealing thickness, thereby adjusting the thickness of the aluminum-plastic film, making thickness adjustment more convenient.

[0030] further,

[0031] The lower end cap assembly also includes a lower connecting plate, a heat insulation plate, and a thermal insulation plate for connecting with the lower end cap mounting assembly;

[0032] The heat insulation plate of the lower end cap assembly is disposed between the lower connecting plate and the lower heat storage block;

[0033] In the upper end cap assembly, the insulation plate is disposed on the non-mounting surface of the upper heat storage block and / or the upper end cap;

[0034] In the lower end cap assembly, the insulation plate is disposed on the non-installation surface of the lower heat storage block and / or the lower end cap.

[0035] Furthermore, the upper end cap mounting assembly also includes

[0036] Spindle mounting base,

[0037] Upper connector pull block for connecting to the output end of the upper drive cylinder.

[0038] and an upper end cap connector for connecting to the output end of the upper drive cylinder;

[0039] The rotating shaft mounting base is fixedly connected to the slider connecting base on the output end side of the heat sealing thickness adjusting cylinder; the rotating shaft is rotatably connected to the rotating shaft mounting base; and the upper connector pull block is fixedly connected to the slider connecting base on the side away from the rotating shaft mounting base.

[0040] Insulation boards and heat insulation boards are installed to improve the temperature uniformity of the upper and lower end caps, while saving energy.

[0041] Furthermore, the heat sealing mechanism also includes a heat sealing pressure sensor and a PLC control device; the heat sealing pressure sensor is installed inside the upper sealing head cylinder joint pull block, and the PLC control device is electrically connected to the heat sealing pressure sensor, the upper drive cylinder, the lower drive cylinder, and the heat sealing thickness adjustment cylinder.

[0042] Furthermore, the lower head mounting assembly also includes

[0043] Lower connector pull block,

[0044] At least two auxiliary support rollers;

[0045] The auxiliary support roller and the lower connector pull block are located on the same side of the lower connecting seat;

[0046] The lower connector pull block is connected to the output end of the lower drive cylinder;

[0047] When the end cap assembly rises, the displacement cylinder extends, and the support adjustment seat abuts against the auxiliary support roller on the side of the base plate.

[0048] Furthermore, the rack assembly includes

[0049] Elevating board,

[0050] Upper cylinder mounting plate for mounting the upper drive cylinder.

[0051] Linear guide rails mounted on the vertical plate

[0052] The slider is tenoned to the linear guide rail.

[0053] And a base plate for mounting the lower drive cylinder;

[0054] The slider is fixedly connected to both the upper end cap mounting assembly and the lower end cap mounting assembly.

[0055] The output end of the upper drive cylinder is provided with an upper drive cylinder connector, and the output end of the lower drive cylinder is provided with a lower drive cylinder connector.

[0056] Furthermore, the heat sealing mechanism also includes an auxiliary support assembly;

[0057] The auxiliary support components include

[0058] Support base plate,

[0059] Support column,

[0060] Displacement cylinder,

[0061] and a support adjustment seat installed at the output end of the displacement cylinder;

[0062] The supporting base plate is connected to the base plate of the frame assembly via supporting columns;

[0063] The displacement cylinder is mounted on the support base plate, and the support adjustment seat is slidably connected to the support base plate;

[0064] As the lower end cap assembly rises, the output end of the displacement cylinder extends, and the support adjustment seat abuts against the lower end cap mounting assembly on the bottom plate side.

[0065] An auxiliary support component is installed to reduce the vertical movement of the lower head assembly and the lower head mounting assembly under the pressure of the upper head assembly, thereby improving the uniformity of the heat seal thickness.

[0066] Beneficial effects:

[0067] 1. The upper end cap mounting assembly of the lithium battery aluminum-plastic film heat sealing mechanism of this application includes a rotating shaft and a matching heat sealing thickness adjustment cylinder, which allows the upper end cap assembly to be adjusted to float left and right according to the actual heat sealing situation, making it suitable for heat sealing aluminum-plastic films of greater thickness and longer length; furthermore, multiple heat sources are arranged inside the heat storage block along its length, and the angle between the direction of the heat sources and the length direction of the heat storage block is less than 180°, which solves the problem of large temperature difference from the front end to the rear end of the heat storage block, improves the temperature uniformity of the upper and lower end caps, and thus improves the uniformity of the heat sealing thickness.

[0068] 2. Furthermore, insulation boards are installed on the non-installation surfaces of both the upper and lower heat storage blocks, and heat insulation boards are installed between the upper heat storage block and the upper connecting plate, and between the lower heat storage block and the lower connecting plate, to reduce heat loss from the end caps and heat storage blocks, thereby improving the uniformity of temperature and heat sealing thickness of the upper and lower end caps.

[0069] 3. Furthermore, the heat sealing mechanism also includes auxiliary support components to reduce the vertical movement of the lower end cap assembly and the lower end cap mounting assembly under the pressure of the upper end cap assembly, thereby improving the uniformity of the heat sealing thickness. Attached Figure Description

[0070] Figure 1 A schematic diagram of the structure of the heat sealing mechanism in the prior art;

[0071] Figure 2 A side view of the heat sealing mechanism according to an embodiment of this application;

[0072] Figure 3 1. Exploded side view of the heat sealing mechanism according to an embodiment of this application;

[0073] Figure 4 Front view of the upper end cap mounting components;

[0074] Figure 5 Side view of the upper end cap mounting components;

[0075] Figure 6 Front view of the upper end cap component;

[0076] Figure 7 Right view of the upper cap component;

[0077] Figure 8 Exploded view of the upper head assembly;

[0078] Figure 9 Front view of the lower end cap component;

[0079] Figure 10 Top view of the lower end cap assembly;

[0080] Figure 11 Top view of the lower end cap assembly;

[0081] Figure 12 Front view of the lower end cap mounting assembly;

[0082] Figure 13 Side view of the lower end cap mounting assembly;

[0083] Figure 14 Side view of auxiliary support components.

[0084] Figure label:

[0085] 1. End cap; 2. Heat storage block; 4. Frame assembly; 5. Upper end cap mounting assembly; 6. Upper end cap assembly; 7. Lower end cap mounting assembly; 8. Lower end cap assembly; 9. Auxiliary support assembly; 10. Upper drive cylinder; 11. Lower drive cylinder; 21. Cylindrical heater; 22. Thermocouple; 41. Vertical plate; 42. Upper cylinder mounting plate; 43. Upper cylinder support plate; 44. Linear guide rail; 45. Slider; 46. Base plate; 51. Upper end cap cylinder connector pull block; 52. Heat sealing pressure sensor; 53. Slider connecting seat; 54. Heat sealing thickness adjustment cylinder; 55. Rotary shaft mounting seat; 56. Rotary shaft; 57. Upper end cap connecting... 61. Upper heat storage block; 62. Upper end cap; 63. Heat seal thickness adjustment screw; 64. Upper end cap floating limit screw; 65. Upper connecting plate; 66. Heat insulation plate; 67. Thermal insulation plate; 71. Lower connecting seat; 72. Lower connector pull block; 73. Auxiliary support roller; 81. Lower end cap; 82. Lower heat storage block; 83. Lower connecting plate; 84. Heat seal thickness limit post; 91. Support base plate; 92. Support post; 93. Support adjustment seat; 94. Displacement cylinder; 101. Upper drive cylinder connector; 111. Lower drive cylinder connector; 671. Front thermal insulation plate; 672. Rear thermal insulation plate; 673. End face thermal insulation plate. Detailed Implementation

[0086] To make this practical technical solution clearer, the following is combined with... Figures 2 to 14 The present invention will be further described in detail with reference to specific embodiments.

[0087] In the description of this utility model, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0088] In this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0089] A lithium battery aluminum-plastic film heat sealing mechanism containing multiple heat sources, the structure of which is as follows: Figures 1 to 3 It includes a frame assembly 4, an upper head mounting assembly 5, an upper head assembly 6, a lower head assembly 8, a lower head mounting assembly 7, two auxiliary support assemblies 9, an upper drive cylinder 10, and a lower drive cylinder 11.

[0090] like Figure 3 Rack assembly 4:

[0091] The frame assembly 4 includes a vertical plate 41, an upper cylinder mounting plate 42, an upper cylinder support plate 43, a linear guide rail 44, a slider 45 that is tenoned with the linear guide rail 44, and a base plate 46.

[0092] The upper cylinder mounting plate 42 and the base plate 46 are fixedly installed at both ends of the upright plate 41 with screws. The upper cylinder mounting plate 42 and the base plate 46 are both perpendicular to the upright plate 41. The upper cylinder support plate 43 is provided with a right angle, and the two sides of the right angle abut against the upper cylinder mounting plate 42 and the upright plate 41 respectively, in order to improve the stability of the upper cylinder mounting plate 42 and improve the load-bearing capacity of the upper cylinder mounting plate 42.

[0093] The upper drive cylinder 10 is mounted on the upper cylinder mounting plate 42, and the lower drive cylinder 11 is mounted on the base plate 46; the linear guide rail 44 is set on the upright plate 41. The output end of the upper drive cylinder 10 is provided with an upper drive cylinder connector 101, which is connected to the upper end cap assembly 6; the output end of the lower drive cylinder 11 is provided with a lower drive cylinder connector 111, which is connected to the lower end cap assembly 8.

[0094] Driven by the upper drive cylinder 10 and the lower drive cylinder 11, the upper end cap assembly 6 and the lower end cap assembly 8 move closer to each other.

[0095] like Figures 4 to 5 Upper end cap mounting component 5:

[0096] The upper end cap mounting assembly 5 includes an upper end cap cylinder connector pull block 51, a heat sealing pressure sensor 52, a slider connecting seat 53, two heat sealing thickness adjusting cylinders 54, a rotating shaft mounting seat 55, a rotating shaft 56, and an upper end cap connecting seat 57.

[0097] The slider connecting seat 53 is fixedly connected to the slider 45 on the frame assembly 4. Under the drive of the upper drive cylinder 10, the upper end cap mounting assembly 5 is slidably connected to the frame assembly 4.

[0098] The upper end cylinder connector pull block 51 is fixedly connected to one side of the slider connecting seat 53, and the upper drive cylinder connector 101 is tenoned with the upper end cylinder connector pull block 51; the other side is fixedly connected to the rotating shaft mounting seat 55, and the rotating shaft 56 is rotatably connected to the rotating shaft mounting seat 55; the upper end connecting seat 57 is fixedly connected to the rotating shaft mounting seat 55.

[0099] Two heat-sealing thickness adjusting cylinders 54 are respectively installed on both sides of the slider connecting seat 53; the extension and retraction direction of the output end of the heat-sealing thickness adjusting cylinder 54 is the same as the sliding direction of the upper end mounting assembly 5.

[0100] In this embodiment, the slider connecting seat 53, the rotating shaft mounting seat 55 and the upper end cylinder connector pull block 51 can be integrally formed, or they can be formed separately and then fastened together.

[0101] The heat sealing pressure sensor 52 is located inside the upper end cylinder connector pull block 51, and the upper drive cylinder connector 101 abuts against the heat sealing pressure sensor 52.

[0102] The rotating shaft mounting seat 55 is installed below the slider connecting seat 53 and combined with the rotating shaft 56 and the upper end cap connecting seat 57. This allows the upper end cap 62 to float flexibly, resulting in better consistency of the heat seal thickness throughout the entire strip.

[0103] The rotating shaft 56 is connected to the upper end cap assembly 6. The upper end cap assembly 6 is essentially suspended below the rotating shaft 56, with the middle connection and both ends suspended, forming a seesaw structure. The upper end cap 62 is in a floating state, which can adapt to the plane of the lower end cap 81 and always fit the surface of the lower end cap 81.

[0104] like Figures 6 to 9 Upper end cap assembly 6:

[0105] The upper end cap assembly 6 includes a cuboid upper heat storage block 61, a heat sealing thickness adjustment screw 63, an upper end cap floating limit screw 64, an upper connecting plate 65, a heat insulation plate 66, a heat insulation plate 67, and an upper end cap 62.

[0106] The insulation board 67 is disposed on the non-installation surface of the upper heat storage block 61 and / or the heat insulation board 66. The insulation board 67 includes a front insulation board 671, a rear insulation board 672 and an end face insulation board 673.

[0107] Multiple cylindrical heaters 21 and thermocouples 22 are installed side by side in the vertical direction of the upper heat storage block 61.

[0108] The upper connecting plate 65 and the upper end cap 62 are respectively disposed on two opposite sides of the upper heat storage block 61, and the heat insulation plate 66 is disposed on the connecting plate between the heat storage blocks 61; the upper connecting plate 65 is fixedly connected to the upper end cap connecting seat 57 of the upper end cap mounting assembly 5.

[0109] The upper end cap floating limit screw 64 is threaded onto the upper connecting plate 65. When adjusted to a suitable height, the rotation angle of the upper end cap assembly 6 will be controlled within a small range to avoid the angle between the upper end cap assembly 6 and the lower end cap assembly 8 being too large when the upper end cap assembly 6 is pressed down, which would cause indentations on the surface of the aluminum-plastic film.

[0110] The heat seal thickness adjusting screw 63 is threaded onto the upper connecting plate 65, and the output end of the heat seal thickness adjusting cylinder 54 abuts against the heat seal thickness adjusting screw 63. If the heat seal thickness is too thin, the screw is tightened downwards, which reduces the downward pressure on the upper sealing head 62 and increases the heat seal thickness; if the heat seal thickness is too thick, the screw is tightened upwards, which increases the downward pressure on the upper sealing head 62 and makes it tighter, thus reducing the heat seal thickness.

[0111] A rear insulation plate 672 is installed behind the upper heat storage block 61, a front insulation plate 671 is installed on the side of the upper end cap 62, and end face insulation plates 673 are installed on both ends. Unlike the traditional design, multiple cylindrical heaters 21 and thermocouples 22 are installed side by side in the width direction of the heat storage block 2. With the design of the rear insulation plate 672 and end face insulation plates 673, a heat insulation plate 66 is installed on the top of the upper heat storage block 61. This method can solve the problem of large temperature differences in all areas of the upper heat storage block 61.

[0112] like Figures 12 to 13 Lower head mounting component 7:

[0113] The lower end cap mounting assembly 7 includes a lower connecting seat 71, a lower connector pull block 72, and two auxiliary support rollers 73; the lower connector pull block 72 and the auxiliary support rollers 73 are arranged on the same side of the lower connecting seat 71, and the auxiliary support rollers 73 are installed on both sides of the lower connecting seat 71; the lower connecting seat 71 is fixedly connected to the slider 45 on the frame assembly 4; the lower connector pull block 72 is tenoned with the lower drive cylinder connector 111.

[0114] like Figures 10 to 11 Lower head assembly 8:

[0115] The lower end cap assembly 8 includes a lower end cap 81, a lower heat storage block 82, a heat insulation plate 66, a lower connecting plate 83, and a heat sealing thickness limiting post 84;

[0116] The lower heat storage block 82 has multiple cylindrical heaters 21 and thermocouples 22 installed side by side in the vertical direction of its length.

[0117] The lower connecting plate 83 and the lower end cap 81 are respectively disposed on two opposite sides of the lower heat storage block 82, and the heat insulation plate 66 is disposed between the lower connecting plate 83 and the lower heat storage block 82; the heat insulation plate 67 is disposed on the non-installation surface of the heat storage block 2 and / or the lower end cap 81, and the heat insulation plate 67 includes a front heat insulation plate 671, a rear heat insulation plate 672 and an end face heat insulation plate 673.

[0118] The heat seal thickness limiting post 84 is set on the lower end cap 81 near the upper end cap 62.

[0119] The lower connecting plate 83 is fixedly connected to the lower connecting seat 71.

[0120] A rear insulation plate 672 is installed behind the lower heat storage block 82, and end face insulation plates 673 are installed on both ends. Unlike traditional designs, multiple cylindrical heaters 21 and thermocouples 22 are installed side by side along the length of the lower heat storage block 82. Combined with the design of the rear insulation plate 672 and the end face insulation plates 673, the drawback of large temperature differences in all areas of the existing lower heat storage block 82 is solved.

[0121] Auxiliary support component 9:

[0122] like Figure 14 The auxiliary support assembly 9 includes a support base plate 91, a support column 92, a support adjustment seat 93, and a displacement cylinder 94 mounted on the support base plate 91.

[0123] The support base plate 91 is connected to the base plate 46 of the frame assembly 4 via the support column 92;

[0124] The support adjustment seat 93 is installed at the output end of the displacement cylinder 94. When the output end of the displacement cylinder 94 extends, the support adjustment seat 93 moves toward the auxiliary support roller 73 and slides onto the support base plate 91.

[0125] When the lower head assembly 8 rises, the displacement cylinder 94 extends, driving the support adjustment seat 93 forward and engaging it in the auxiliary support roller 73 of the lower head mounting assembly 7. The support adjustment seat 93 and the auxiliary support roller 73 abut against each other, thus limiting and fixing the height of the lower head assembly 8.

[0126] In this embodiment, the heat sealing mechanism also includes a PLC control device; the upper drive cylinder 10, the lower drive cylinder 11, the heat sealing pressure sensor 52, the heat sealing thickness adjustment cylinder 54, the displacement cylinder 94 and the thermocouple 22 are electrically connected to the PLC control device; the heat sealing action of the lithium battery aluminum-plastic film is realized through the program control of the PLC control device.

[0127] In other embodiments, a PLC control device may not be required, and the switches of the upper drive cylinder 10, the lower drive cylinder 11, the heat sealing thickness adjustment cylinder 54, and the displacement cylinder 94 can be manually controlled individually.

[0128] In other embodiments, the auxiliary support component 9 may not be provided. Instead, multiple lower head mounting components 7 and lower drive cylinders 11 may be provided, with the multiple lower head mounting components 7 serving to support the lower head component 8.

[0129] The heat-sealing mechanism of this application operates as follows when heat-sealing the aluminum-plastic film of lithium batteries:

[0130] After the lithium batteries requiring heat sealing are in place, the lower end cap assembly 8 is driven to rise into position by the upper drive cylinder 10. Simultaneously, the displacement cylinders 94 of the two auxiliary support assemblies 9 extend (driving the support adjustment seat 93 forward and engaging it in the auxiliary support rollers 73 of the lower end cap mounting assembly 7, thus limiting the height of the lower end cap assembly 8 and providing a fixing function). The upper drive cylinder 10 extends, driving the upper end cap assembly 6 downward. The upper end cap 62 and the lower end cap 81 approach each other, performing the aluminum-plastic film heat sealing action. (During the heat sealing process, the program reads the pressure sensor value and compares it with the set value. If the value does not match the set value, the equipment alarms to indicate that the pressure is too high or too low, requiring employee intervention for confirmation. During the heat sealing process, the program reads the temperature of the upper and lower end caps 81, ensuring that the temperature remains within the process set value range.) After heat sealing is completed, each cylinder returns to its original position under program control, waiting for the next pack of lithium batteries to arrive before performing aluminum-plastic film heat sealing.

[0131] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heat sealing mechanism for lithium battery aluminum laminate film containing a plurality of heat sources, characterized by, The application relates to a hot sealing mechanism for lithium battery aluminum-plastic film containing multiple heat sources. The rack assembly, The upper head mounting assembly, The upper head assembly, The lower head assembly, The lower head mounting assembly, The upper driving cylinder, And the lower driving cylinder; The upper driving cylinder and the lower driving cylinder are mounted on the rack assembly; The upper head mounting assembly comprises a rotating shaft, a heat-sealing thickness adjusting cylinder and a sliding block connecting seat; The sliding block connecting seat is connected to the output end of the upper driving cylinder; the sliding block connecting seat is slidingly connected to the rack assembly; the rotating shaft is rotatably connected to the sliding block connecting seat; and at least two heat-sealing thickness adjusting cylinders are arranged on the sliding block connecting seat; The upper head assembly comprises an upper head and an upper heat storage block for heating the upper head; the upper heat storage block is fixedly connected to the rotating shaft; and the output end of the heat-sealing thickness adjusting cylinder abuts against the upper heat storage block; The lower head assembly comprises a lower head arranged opposite to the upper head in the sliding direction of the lower head mounting assembly and a lower heat storage block for heating the lower head; The lower head mounting assembly comprises a lower connecting seat slidingly connected to the rack assembly; one side of the lower connecting seat is connected to the output end of the lower driving cylinder, and the other side is fixedly connected to the lower head assembly; The upper heat storage block and the lower heat storage block are provided with multiple heat source devices.

2. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The included angle between the arrangement direction of the heat source device and the length direction of the heat storage block is less than 180℃.

3. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The lower head is provided with a heat-sealing thickness limiting column.

4. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The upper head assembly further comprises An upper connecting plate connected to the rotating shaft and a height-adjustable heat-sealing thickness adjusting screw arranged on the upper connecting plate; The heat-sealing thickness adjusting screw abuts against the output end of the heat-sealing thickness adjusting cylinder.

5. The hot sealing mechanism for lithium battery aluminum-plastic film containing multiple heat sources according to claim 4, wherein The upper head assembly further comprises a heat insulation plate and a heat preservation plate; the heat insulation plate is arranged between the upper connecting plate and the upper heat storage block; The lower head assembly further comprises a lower connecting plate connected to the lower head mounting assembly, a heat insulation plate and a heat preservation plate; The heat insulation plate of the lower head assembly is arranged between the lower connecting plate and the lower heat storage block; In the upper head assembly, the heat preservation plate is arranged on the non-mounting surface of the upper heat storage block and / or the upper head; In the lower head assembly, the heat preservation plate is arranged on the non-mounting surface of the lower heat storage block and / or the lower head.

6. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The upper head mounting assembly further comprises A rotating shaft mounting seat, An upper joint pull block connected to the output end of the upper driving cylinder, And an upper head connecting seat connected to the output end of the upper driving cylinder; The rotating shaft mounting seat is fixedly connected to the sliding block connecting seat on the output end side of the heat-sealing thickness adjusting cylinder; the rotating shaft is rotatably connected to the rotating shaft mounting seat; and the upper joint pull block is fixedly connected to the sliding block connecting seat away from the rotating shaft mounting seat.

7. The multi-heat source-containing lithium battery ALPO film heat sealing mechanism according to claim 6, characterized in that, The hot sealing mechanism further comprises a heat sealing pressure sensor and a PLC control device; the heat sealing pressure sensor is arranged in the upper head cylinder joint pull block, and the PLC control device is electrically connected with the heat sealing pressure sensor, the upper driving cylinder, the lower driving cylinder and the heat-sealing thickness adjusting cylinder.

8. The hot sealing mechanism for lithium battery aluminum-plastic film containing multiple heat sources according to claim 1, wherein The lower head mounting assembly further comprises A lower joint pull block, At least two auxiliary supporting rollers; The auxiliary support roller and the lower joint pull block are arranged on the same side of the lower connecting seat. The lower joint pull block is connected with the output end of the lower driving cylinder. When the lower head assembly is lifted, the output end of the displacement cylinder is extended, and the support adjusting seat abuts against the auxiliary support roller on the side of the bottom plate.

9. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The rack assembly comprises a vertical plate, an upper cylinder mounting plate for mounting the upper driving cylinder, a linear guide rail mounted on the vertical plate, a sliding block in engagement with the linear guide rail, and a bottom plate for mounting the lower driving cylinder; The sliding block is fixedly connected with the upper head mounting assembly and the lower head mounting assembly. The output end of the upper driving cylinder is provided with an upper driving cylinder joint, and the output end of the lower driving cylinder is provided with a lower driving cylinder joint.

10. The multi-heat source containing lithium battery ALPO film heat sealing mechanism according to claim 1, wherein, The heat sealing mechanism further comprises an auxiliary support assembly; The auxiliary support assembly comprises a support bottom plate, a support column, a displacement cylinder, and a support adjusting seat mounted on the output end of the displacement cylinder; The support bottom plate is connected with the bottom plate of the rack assembly through the support column. The displacement cylinder is mounted on the support bottom plate, and the support adjusting seat is slidingly connected with the support bottom plate. When the lower head assembly is lifted, the output end of the displacement cylinder is extended, and the support adjusting seat abuts against the lower head mounting assembly on the side of the bottom plate.

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