Automatic tab positioning mechanism for top sealing of soft package lithium battery

Abstract

The utility model belongs to the technical field of soft package lithium batteries, and relates to an automatic tab positioning mechanism for soft package lithium battery top sealing, which uses automatic components to replace manual operation, is mounted on a top sealing machine base, can automatically perform synchronous operation with a top sealing machine, does not need to manually place tabs into a positioning groove or a customized clamp for positioning before sealing, and improves the sealing efficiency. The time for manually adjusting the position of the tab is saved, and the positioning precision is high. The device can be used for packaging batteries with different tab distances and tab sizes, can effectively prevent the tab from skewing, bending and the like, and improves the position consistency of the battery tab after packaging; the battery edge sealing structure is suitable for packaging of different battery edge sealing structures, high in universality and easy and convenient to install, and a complex sensor does not need to be installed.

Description

Technical Field

[0001] The utility model belongs to the technical field of soft-pack lithium batteries, in particular to an automatic positioning mechanism for a pole ear used for top sealing of a soft-pack lithium battery. Background Art

[0002] The sealed insulation connection between the tabs and the aluminum-plastic film shell of the soft-pack lithium battery is achieved through the top-side sealing process. In order to ensure the relative position of the tabs and the aluminum-plastic film shell during the top-side sealing process, the aluminum-plastic film only contacts the insulating glue part on the tabs during sealing to prevent the battery itself from short-circuiting, and to avoid the tabs from tilting and tilting after the soft-pack lithium battery is packaged in the top-side sealing process, the tabs need to be accurately positioned in the top-side sealing process. At present, the top-side sealing process of soft-pack lithium batteries mostly uses manual feeding to automated equipment for packaging. The tab positioning during packaging requires manual pre-adjustment of the positive and negative tabs and then placing them in fixed flat slots, oblique slots, trapezoidal slots, or placing the tabs in adjustable limit blocks and fixing the tabs by adjusting the limit blocks before packaging. Or the battery cell and tabs are pre-positioned in a customized fixture and then placed in the corresponding position in the equipment for top sealing. When adjusting the tabs during manual feeding, the tabs are easily scratched or bent, which affects the appearance of the final battery product and the battery charging and discharging performance. In addition, the positioning of the tabs using the card slot has poor accuracy, and it is difficult to control the exposed height of the tab glue (i.e. the relative position of the edge of the aluminum-plastic film and the edge of the tab insulation glue during top sealing), which will increase the probability of short circuit after battery packaging, thereby reducing the qualified rate of the battery after packaging. In addition, the method of placing the battery in a customized fixture for positioning will reduce production efficiency and is not conducive to actual production. Utility Model Content

[0003] In order to solve the problems existing in the prior art, the main purpose of the utility model is to provide an automatic positioning mechanism for a tab of a soft-pack lithium battery top seal.

[0004] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0005] An automatic tab positioning mechanism for top sealing of a soft-pack lithium battery, comprising a tab position positioning component, a tab anti-tilting positioning component, and a component connected to a head base;

[0006] The tab position positioning component includes a parallel opening and closing type air claw, a left positioning claw, a right positioning claw, a positioning push plate and a connecting plate; the left positioning claw and the right positioning claw are installed on the parallel opening and closing type air claw, the left positioning claw and the right positioning claw are respectively installed at one end of a connecting plate, and the positioning push plate is installed at the other end of the connecting plate;

[0007] The tab anti-tilting positioning component includes a pressure plate, a guide rod, a spring, a fixed block, and a locking sleeve; the guide rod and the fixed block are movably connected, the spring is sleeved on the guide rod, and the upper end contacts the fixed block, and the lower end is fixed by the locking sleeve, and the guide rod is connected to the pressure plate at the bottom;

[0008] The components connected with the head base include a connecting block, a heat insulation plate, and an air gripper fixing plate; the connecting block and the air gripper fixing plate are installed together with a heat insulation plate between them, and the ear position positioning component is installed on the air gripper fixing plate.

[0009] As a preferred solution of the automatic positioning mechanism for the top sealing of a soft-pack lithium battery described in the utility model, the left positioning claw is composed of a vertical plate and a horizontal plate installed in an L shape, and the right positioning claw is a vertical plate in an I shape; when the top sealing mechanism is closed, the left positioning claw and the right positioning claw are closed in a U shape through the power provided by the parallel opening and closing type air claw, and the rear ends of the left positioning claw and the right positioning claw are provided with slots and connected to the parallel opening and closing active parts of the parallel opening and closing type air claw with screws, so that the front and rear positions of the left positioning claw and the right positioning claw can be adjusted.

[0010] As a preferred solution of the automatic positioning mechanism for the top seal of a soft-pack lithium battery described in the utility model, connecting plates are movably installed on both sides of the rear of the positioning push plate, and the connecting plates on both sides are movably installed on the inner sides of the left positioning claw and the right positioning claw respectively. The positioning push plate moves forward through the force transmitted by the connecting plate when the left positioning claw and the right positioning claw are closed, and fits with the L-shaped horizontal plate of the left positioning claw.

[0011] As a preferred solution of the automatic tab positioning mechanism for the top seal of a soft-pack lithium battery described in the utility model, the fixing block is used to fix the tab anti-tilting positioning component above the upper head base, and is provided with a notch and fixed with a screw.

[0012] As a preferred solution of the automatic positioning mechanism for the pole ear for the top sealing of a soft-pack lithium battery described in the utility model, the guide rod is T-shaped, and a fixed block, a spring, a locking sleeve and a pressure plate are sequentially inserted into the bottom, so that the guide rod can drive the pressure plate to move up and down in the fixed block. Under normal conditions, the position of the pressure plate below the guide rod is lower than the position of the upper head. When the top sealing mechanism is closed, the pressure plate contacts the pole ear before the upper head, and presses the pole ear against the L-shaped horizontal plate of the left positioning claw. Adjusting the position of the locking sleeve can adjust the initial compression length of the spring, thereby adjusting the downward pressure.

[0013] As a preferred solution of the automatic positioning mechanism for the top seal of a soft-pack lithium battery described in the utility model, the connecting block is used to connect the head base and the air claw fixing plate, the fixing point of the connecting block and the head base is a groove, and the two are separated and installed by a heat insulation board.

[0014] As a preferred embodiment of the automatic ear positioning mechanism for the top sealing of a soft-pack lithium battery according to the present utility model, wherein: the air gripper fixing plate is provided with a horizontal notch, a vertical notch and a positioning step. The vertical notch is used for connecting with the connecting block, and the horizontal notch is used for installing a parallel-opening and closing type air gripper.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The present utility model provides an automatic ear positioning mechanism for the top sealing of a soft-pack lithium battery, which uses automatic components to replace manual operations. It is installed on the base of the top sealer and can automatically perform synchronous operations with the top sealer. Before sealing, there is no need for manual placement of the ears into the positioning slots or customized jigs for positioning, saving the time for manual adjustment of the ear positions and having a relatively high positioning accuracy. It can be used for the encapsulation of batteries with different ear spacings and ear sizes, effectively preventing situations such as ear skew and bending, improving the consistency of the ear positions after battery encapsulation; it is applicable to the encapsulation of different battery edge-sealing structures, has strong versatility, is simple and convenient to install, and does not require the installation of complex sensors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present utility model installed on the top sealing mechanism.

[0019] Figure 2 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 3 It is a schematic diagram of the ear position positioning component of the present utility model.

[0021] Figure 4 It is a schematic diagram of the ear anti-lifting positioning component of the present utility model.

[0022] Figure 5 It is a schematic diagram of the component connecting the present utility model with the head base.

[0023] Figure 6 It is a three-dimensional view before closing when the present utility model positions the ears.

[0024] Figure 7 It is a side view before closing when the present utility model positions the ears.

[0025] Figure 8It is a three-dimensional diagram after closing when the utility model is used to position the pole ear.

[0026] Figure 9 It is a side view of the utility model after being closed when positioning the pole ear.

[0027] Figure 10 This is a three-dimensional diagram of the utility model after the pressing plate is pressed when positioning the pole ear.

[0028] Figure 11 It is a side view of the utility model after the pressing plate is pressed when positioning the pole ear.

[0029] Among them: 1. The pole ear position positioning component, 101, parallel opening and closing type air claw, 102, left positioning claw, 102-1, left positioning claw hinged mounting structure, 102-2, left positioning claw notch, 102-3, transverse plate, 103, right positioning claw, 103-1, right positioning claw hinged mounting structure, 103-2, right positioning claw notch, 104, positioning push plate, 105, connecting plate; 2. The pole ear anti-tilting positioning component, 201, pressure plate, 201-1, pressure plate hole, 202, guide rod, 203, fixed Fixed block, 203-1, fixed block slot, 203-2, fixed block hole, 204, spring, 205, locking sleeve; 3, parts connected to the head base, 301, connecting block, 301-1, connecting block hole, 301-2, connecting block slot, 302, insulation board, 303, air claw fixing plate; 303-1, horizontal slot, 303-2, vertical slot, 4, top sealing mechanism, 401, lower head base, 402, upper head base, 403, lower head, 404, upper head; 5, pole ear.

[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be described clearly and completely in conjunction with the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. 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.

[0032] like Figures 1-11 As shown, the utility model discloses an automatic tab positioning mechanism for top sealing of a soft-pack lithium battery, comprising a tab position positioning component 1, a tab anti-tilting positioning component 2, and a component 3 connected to a head base;

[0033] The tab position positioning component 1 includes a parallel opening and closing type air gripper 101, a left positioning claw 102, a right positioning claw 103, a positioning push plate 104 and a connecting plate 105; the left positioning claw 102 and the right positioning claw 103 are installed on the parallel opening and closing type air gripper 101, the left positioning claw 102 and the right positioning claw 103 are respectively installed at one end of a connecting plate 105, and the positioning push plate 104 is installed at the other end of the connecting plate 105;

[0034] The tab anti-tilting positioning component 2 includes a pressing plate 201, a guide rod 202, a spring 204, a fixing block 203, and a locking sleeve 205; the guide rod 202 and the fixing block 203 are movably connected, the spring 204 is sleeved on the guide rod 202, and the upper end contacts the fixing block 203, and the lower end is fixed by the locking sleeve 205, and the guide rod 202 is connected to the pressing plate 201 at the bottom;

[0035] The component 3 connected to the head base includes a connecting block 301, a heat insulating plate 302, and an air gripper fixing plate 303; the heat insulating plate 302 is placed between the connecting block 301 and the air gripper fixing plate 303, and the lug position positioning component 1 is installed on the air gripper fixing plate 303.

[0036] In one embodiment of the utility model, the left positioning claw 102 is formed by a vertical plate and a horizontal plate 102-3 installed in an L shape, and the right positioning claw 103 is a vertical plate in an I shape; when the top sealing mechanism is closed, the left positioning claw 102 and the right positioning claw 103 are closed in a U shape by the power provided by the parallel opening and closing type air claw 101, and the rear ends of the left positioning claw 102 and the right positioning claw 103 are provided with notches and connected with the parallel opening and closing active parts of the parallel opening and closing type air claw 101 by screws, so that the front and rear positions of the left positioning claw 102 and the right positioning claw 103 can be adjusted. When the two claws are closed in a U shape, the pole ear is located in it, which can effectively position the left and right and bottom of the pole ear, prevent the pole ear from tilting left and right and bending downward, and ensure the good appearance of the battery after packaging. And it automatically closes and positions following the closing of the top sealing mechanism, which can improve the packaging efficiency.

[0037] In one embodiment of the utility model, connecting plates 105 are movably installed on both sides of the rear of the positioning push plate 104, and the connecting plates 105 on both sides are movably installed on the inner sides of the left positioning claw 102 and the right positioning claw 103, respectively. The positioning push plate 104 moves forward through the force of the left positioning claw 102 and the right positioning claw 103 when they are closed, and fits with the L-shaped horizontal plate of the left positioning claw 102. When the left positioning claw 102 and the right positioning claw 103 are closed, the positioning push plate 104 fits with the lower side of the left positioning claw 102 to control the extension height of the top of the pole ear, thereby indirectly controlling the exposed glue height of the pole ear during packaging, reducing the short circuit probability of the battery after packaging, improving the battery qualification rate and ensuring the battery safety.

[0038] In one embodiment of the utility model, the left positioning claw 102 and the right positioning claw 103 are respectively provided with a left positioning claw hinged mounting structure 102-1 and a right positioning claw hinged mounting structure 103-1 on the inner side, and are connected to the two sides of the positioning push plate 104 through a left and right connecting plate 105, so that when the left positioning claw 102 and the right positioning claw 103 are combined, the connecting plate 105 can push the positioning push plate 104 against the horizontal plate 102-3 of the left positioning claw 102. The left positioning claw 102 and the right positioning claw 103 are respectively installed on the movable claws on both sides of the parallel opening and closing air claw 101 from the left positioning claw notch 102-2 and the right positioning claw 103-2 by screws.

[0039] Specifically, through the above arrangement, when the left positioning claw 102 and the right positioning claw 103 move from the left and right sides to the middle and close, the left and right sides of the pole ear can be positioned to prevent the pole ear from tilting left and right. And when the positioning claw is closed, the positioning push plate 104 is pushed to the rear side of the horizontal plate 102-3 of the left positioning claw by the connecting plate 105 to fit closely, so that the pole ear that extends too high can be pushed to coincide with the rear side of the horizontal plate 102-3, and the height of the pole ear can be positioned, thereby limiting the height of the glue leakage during the top sealing of the battery. The schematic diagram of the positioning of the pole ear is shown in FIG. Figures 6-9 As shown, Figures 6-7 To indicate before closing, Figures 8-9 The diagram is shown after closing. The notches of the left positioning claw 102 and the right positioning claw 103 can adjust the front and rear positions of the left and right pressing claws, so as to adjust the position of the positioning push plate 104 after it is close to the horizontal plate 102-3 according to the required tab height during the top sealing of the battery. And when encapsulating tabs with a wider width, a gasket of corresponding thickness can be inserted between the connection positions of the left positioning claw 102 and the right positioning claw 103 and the parallel opening and closing type air claw 101 to expand the required tab positioning width.

[0040] In one embodiment of the present invention, the fixing block 203 is used to fix the tab anti-tilting positioning component 2 on the upper head base 402, and is provided with a notch and fixed with a screw. The position of the guide rod 202 can be adjusted by moving and rotating arbitrarily within the notch range, thereby ensuring that the pressure plate 201 under the guide rod 202 can be normally pressed into the middle of the combined left positioning claw 102 and the right positioning claw 103.

[0041] In one embodiment of the utility model, the guide rod 202 is T-shaped, and the fixing block 203, spring 204, locking sleeve 205 and pressure plate 201 are sequentially inserted below, so that the guide rod 202 can drive the pressure plate 201 to move up and down in the fixing block 203. Under normal conditions, the position of the pressure plate 201 below the guide rod 202 is lower than the position of the upper head 404. When the top sealing mechanism is closed, the pressure plate 201 contacts the tab before the upper head 404, and presses the tab on the L-shaped horizontal plate of the left positioning claw 102. Adjusting the position of the locking sleeve 205 can adjust the initial compression length of the spring 204, thereby adjusting the downward pressure. Pressing down the tab can effectively prevent the tab from tilting after the top sealing package, and the downward pressure can be adjusted according to different tab materials.

[0042] In one embodiment of the utility model, the pressure plate 201 is fixed to the lower end of the guide rod 202 at the pressure plate hole 201-1 by a nut, and the lower surface of the pressure plate 201 is lower than the packaging surface of the upper head 404 after installation. The fixed block notches 203-1 of the two fixed blocks 203 are fixed above the upper head base 402 by screws, and the guide rod 202 is installed in the fixed block hole 203-2 of the fixed block 203, so that the guide rod 202 can move up and down in the fixed block hole 203-2. The spring 204 is sleeved in the guide rod 202, and the upper end contacts the fixed block 203, and the lower end is fixed with a locking sleeve 205, so that the guide rod 202 can return to the lower position through the spring 204 after moving upward, and the pressure plate 201 on the guide rod 202 has a certain force when pressing down.

[0043] Specifically, through the above arrangement, the fixed block 203 is installed on the upper head base 402 through the notch at the fixed block notch 203-1, and the position of the fixed block 203 can be adjusted to adjust the position of the pressure plate 201 at the lower end of the guide rod 202, so that it is aligned with the middle of the left positioning claw 102 and the right positioning claw 103. When the upper head base 402 moves downward, the guide rod 202 and the pressure plate 201 fixed at its lower end can be driven to move downward by the fixed block 203. Since the lower surface of the pressure plate 201 is lower than the sealing surface of the lower head 404, it will contact the pole ear 5 before the head, and press the pole ear 5 on the transverse plate 102-3 of the left positioning claw 102. Then, as the upper head base 402 continues to descend, the guide rod 202 will move upward in the fixed block hole 203-2 of the fixed block 203. At the same time, the locking sleeve 205 is driven to compress the spring 204, providing a certain downward pressure to the guide rod 202 and the pressure plate 201 installed thereon, so that the pressure plate 201 presses the tab 5 down to fit the horizontal plate 102-3 of the left positioning claw, and then has a certain force to flatten and shape the tab 5 to prevent the tab 5 from tilting upward during packaging. The initial compression state of the spring 204 can be changed by adjusting the locking sleeve 205, thereby adjusting the required downward pressure. The schematic diagram of the pressure plate after pressing on the tab is shown in the figure below. Figures 10-11 shown.

[0044] In an embodiment of the present utility model, the connecting block 301 is used to connect the head base and the gripper fixing plate 303. The fixing part of the connecting block 301 and the head base is a notch, and the two are separated and installed by a heat insulation plate 302 in the middle. The notch is provided to facilitate the left and right fine adjustment of the entire component 3 connected to the head base. The heat insulation treatment can prevent the high temperature of the head mechanism from damaging the gripper.

[0045] In an embodiment of the present utility model, the gripper fixing plate 303 is provided with a horizontal notch 303-1, a vertical notch 303-2 and a positioning step. The vertical notch 303-2 is used to connect with the connecting block 301 through the connecting block hole 301-1, and the horizontal notch 303-1 is used to install the parallel opening and closing gripper 101. The vertical notch 303-2 can adjust the installation height of the gripper according to the height of the head, and the horizontal notch 303-1 can adjust the gripper spacing according to the tab spacing.

[0046] In an embodiment of the present utility model, two parallel opening and closing grippers 101 are installed in the horizontal notch 303-1 of the gripper fixing plate 303 by screws. The gripper fixing plate 303 is installed on the base connecting block 301 through the vertical notch 303-2 by screws, and a heat insulation plate 302 is installed in the middle of the two. The base connecting plate 301 is fixed on the lower head base 401 through the notch 301-2 by screws.

[0047] Specifically, through the above settings, two parallel opening and closing grippers 101 are installed in the horizontal notch 303-1 of the gripper fixing plate 303 by screws. The position of the two parallel opening and closing grippers 101 can be adjusted according to the tab spacing required by the battery, so as to adjust the position after the left positioning claw 102 and the right positioning claw 103 are closed. The gripper fixing plate 303 is installed on the connecting block 301 through the vertical notch 303-2 by screws, and the height of the gripper fixing plate 303 can be adjusted, so that the upper surface of the transverse plate 102-3 of the left positioning claw 102 coincides with the sealing surface of the lower head 403, ensuring the height when the tab 5 is flattened and shaped, avoiding the tab 5 from being bent, and achieving the designed positioning effect. The gripper fixing plate 303 and the connecting block 301 are separated by a heat insulation plate 302, which can prevent the gripper fixing plate 303 from conducting the heat of the lower head 403 to the parallel opening and closing gripper 101, resulting in gripper damage. The connecting block 301 is fixed on the lower head base 401 through the connecting block notch 301-2 by screws, which facilitates the left and right direction fine adjustment of the whole tab position positioning component 1 and the component 3 connected to the head base, and is convenient for actual use.

[0048] In the actual use of the automatic ear positioning mechanism for the top sealing of the soft-pack lithium battery of the present utility model, it is necessary to first machine the transverse plate 102-3 of the left positioning claw 102 with a corresponding width according to the width of the required ear 5, or insert gaskets with corresponding thicknesses between the left positioning claw 102 and the right positioning claw 103 to adjust the distance between the two sides after the parallel-opening and -closing gripper 101 is closed, so that the distance between the left positioning claw 102 and the right positioning claw 103 after closing is the width of the ear 5. When changing the width of the ear 5, it can also be adjusted by changing the thickness of the gasket. Then, adjust the positions of the left and right parallel-opening and -closing grippers 101 so that the middle position of the left positioning claw 102 and the right positioning claw 103 after closing is aligned with the ear sealing groove position of the head, and adjust the overall height through the vertical notch 303-2 of the gripper fixing plate 303 so that the upper surface of the transverse plate 102-3 of the left positioning claw 102 is flush with the surface of the head. And adjust the front and rear distances between the left and right pressure claws and the head through the left positioning claw notch 102-2 and the right positioning claw notch 103-2, so as to adjust the distance between the position of the positioning push plate 104 after the gripper is closed and the head, that is, change the distance between the position where the positioning push plate 104 pushes the ear 5 to and the head, so as to obtain the required height of the ear 5 after sealing, that is, control the ear glue leakage height. Finally, adjust the position of the pressing plate 201 through the fixing block notch 203-1 of the fixing block 203 so that it is aligned with the middle position of the left positioning claw 102 and the right positioning claw 103 after closing, and adjust the lower surface of the pressing plate 201 to be lower than the sealing surface of the upper head 404, so that after the upper and lower heads are closed, the pressing plate 201 contacts the upper surface of the transverse plate 102-3 of the left positioning claw 102 earlier than the sealing surface of the upper head 404 and is in the middle position. Then adjust the position of the locking bushing 205 to adjust the required downward pressure. When encapsulating, the lower head base 401 drives the ear position positioning component 1 and the component 3 connected to the head base to move upward to contact the battery cell, and then the parallel-opening and -closing gripper 101 drives the left positioning claw 102 and the right positioning claw 103 to close, so as to limit and correct the deviation of the left and right sides of the ear 5. At the same time, when the left positioning claw 102 and the right positioning claw 103 are closed, the positioning push plate 104 is pushed forward to fit the rear side surface of the transverse plate 102-3 of the left positioning claw 102 through the two side connecting plates 105. When the ear 5 extends out of the rear side surface of the transverse plate 102-3 of the left positioning claw 102, the ear 5 will be pushed back, thereby indirectly limiting the ear glue leakage height of the ear 5. Then the upper head base 402 will drive the ear anti-warping positioning component 2 to press down. Since the lower surface of the pressing plate 201 is adjusted to be lower than the sealing surface of the upper head 404 in advance, the pressing plate 201 will first contact the ear 5 and level the ear 5 to complete the final positioning of the ear 5. Then the sealing surface of the upper head 404 and the sealing surface of the lower head 403 are closed to complete the top sealing process.

[0049] The above are only the preferred embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structural transformation made by using the content of the specification of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. An automatic positioning mechanism for the top seal of a soft-pack lithium battery, characterized in that: It includes a tab position positioning component, a tab anti-tilting positioning component, and a component connecting the tab to the head base; The tab position positioning component includes a parallel opening and closing type air claw, a left positioning claw, a right positioning claw, a positioning push plate and a connecting plate; the left positioning claw and the right positioning claw are installed on the parallel opening and closing type air claw, the left positioning claw and the right positioning claw are respectively installed at one end of a connecting plate, and the positioning push plate is installed at the other end of the connecting plate; The tab anti-tilting positioning component includes a pressure plate, a guide rod, a spring, a fixed block, and a locking sleeve; the guide rod and the fixed block are movably connected, the spring is sleeved on the guide rod, and the upper end contacts the fixed block, and the lower end is fixed by the locking sleeve, and the guide rod is connected to the pressure plate at the bottom; The components connected with the head base include a connecting block, a heat insulation plate, and an air gripper fixing plate; the connecting block and the air gripper fixing plate are installed together with a heat insulation plate between them, and the ear position positioning component is installed on the air gripper fixing plate.

2. The automatic positioning mechanism for the top seal of a soft-pack lithium battery according to claim 1, characterized in that: The left positioning claw is composed of a vertical plate and a horizontal plate installed in an L shape, and the right positioning claw is a vertical plate in an I shape; when the top sealing mechanism is closed, the left positioning claw and the right positioning claw are closed in a U shape through the power provided by the parallel opening and closing type air claw, and the rear ends of the left positioning claw and the right positioning claw are provided with slots and connected with the parallel opening and closing active parts of the parallel opening and closing type air claw with screws, so that the front and rear positions of the left positioning claw and the right positioning claw can be adjusted.

3. The automatic positioning mechanism for the top seal of a soft-pack lithium battery according to claim 1, characterized in that: Connecting plates are movably installed on both sides of the rear of the positioning push plate, and the connecting plates on both sides are movably installed on the inner sides of the left positioning claw and the right positioning claw respectively. The positioning push plate moves forward when the left positioning claw and the right positioning claw are closed through the force transmitted by the connecting plates, and fits with the L-shaped horizontal plate of the left positioning claw.

4. The automatic tab positioning mechanism for top sealing of soft-pack lithium battery according to claim 1, characterized in that: The fixing block is used to fix the tab anti-tilting positioning component above the upper head base, and is provided with a notch and fixed with a screw.

5. The automatic positioning mechanism for the top seal of a soft-pack lithium battery according to claim 1, characterized in that: The guide rod is T-shaped, and the fixed block, spring, locking sleeve and pressure plate are sequentially inserted below, so that the guide rod can drive the pressure plate to move up and down in the fixed block. Under normal conditions, the position of the pressure plate below the guide rod is lower than the position of the upper head. When the top sealing mechanism is closed, the pressure plate contacts the pole ear before the upper head, and presses the pole ear on the L-shaped horizontal plate of the left positioning claw. Adjusting the position of the locking sleeve can adjust the initial compression length of the spring, thereby adjusting the downward pressure.

6. The automatic tab positioning mechanism for top sealing of soft-pack lithium battery according to claim 1, characterized in that: The connecting block is used to connect the head base and the air claw fixing plate. The fixing position of the connecting block and the head base is a notch, and the two are separated and installed by a heat insulation board.

7. The automatic tab positioning mechanism for top sealing of soft-pack lithium battery according to claim 1, characterized in that: The air gripper fixing plate is provided with a transverse notch, a vertical notch and a positioning step, the vertical notch is used for connecting with the connecting block, and the transverse notch is used for installing the parallel opening and closing type air gripper.

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