CN217214832U - A lamination tool for lithium ion battery - Google Patents

Abstract

The utility model provides a lithium ion battery's lamination frock, including the lamination platform, the lamination bench is installed the preforming structure, and the preforming structure includes 2 at least preforming subassemblies of evenly distributed in lamination bench lamination district periphery, and the preforming subassembly is not taken shape to the lamination bench and is stacked the battery chip and press and hold, form battery electricity core after the heating. The tabletting component comprises a bracket, and the lower end of the bracket is rotatably arranged on the laminating table; the position facing the direction of the lamination area on the support is provided with a track along the vertical direction, a lamination pressing block is installed on the track, and a first heating structure is arranged in the lamination pressing block. The lamination frock still includes control structure, and control structure includes motion control structure, first heating control structure, and motion control structure is used for controlling position between lamination briquetting transform and the lamination district, and first heating control structure is used for controlling first heating structure and heats the lamination briquetting, the utility model discloses a lamination work has easy operation, efficient advantage with the method of stacking.

Description

A lamination tool for lithium ion battery

technical field

The utility model relates to the technical field of lithium ion battery manufacturing, in particular to a stacking tool for lithium ion batteries.

Background technique

Lithium-ion batteries usually use laminated cells. A flat, loose cubic cell is formed by stacking the positive electrode sheet, the separator and the negative electrode sheet in turn, and then output to the next process for corresponding operations.

At present, since the stacked cube cells are in a loose state, dislocation of the positive electrode and negative electrode is extremely likely to occur during the transfer process to the subsequent process. 1) contact situation, which will cause a short circuit, or even a fire and explosion safety accident when the battery is charged and discharged.

Utility model content

In order to solve the problem that the cubic cell formed by stacking the positive electrode sheet, the separator and the negative electrode sheet in turn is in a loose state, the cell is deformed due to the dislocation during the transfer process in the subsequent process, or the contact between the positive electrode sheet and the negative electrode sheet is short-circuited, etc. Problem, the utility model designs a stacking tool for lithium ion batteries with simple structure and convenient operation, which can ensure that the cube cells formed after stacking are as a whole, so as to avoid the misalignment of the positive electrode and the negative electrode. The problem of unqualified quality of lithium-ion batteries also ensures the safety of lithium-ion batteries.

The technical solution for realizing the purpose of the utility model is as follows:

In the first aspect, the utility model provides a stacking tool for a lithium ion battery, which is used to form a battery cell after stacking a positive electrode sheet, a negative electrode sheet and a diaphragm with an adhesive layer for many times. The stacking tooling includes a stacking table, A tablet pressing structure is installed on the lamination table, and the tablet pressing structure includes at least two tablet pressing components evenly distributed on the outer periphery of the lamination area on the stacking table. After heating, a battery cell is formed.

Wherein, the tablet pressing assembly includes a bracket, and the lower end of the bracket is rotatably mounted on the stacking table; the position on the bracket facing the direction of the stacking area is provided with a track along the vertical direction, the track is mounted with a stacking pressure block, and the inner layer of the stacking pressure block is provided with a track. There is a first heating structure.

The lamination tooling also includes a control structure, the control structure includes a motion control structure and a first heating control structure, the motion control structure is used to control the position between the lamination pressing block and the lamination area, and the first heating control structure is used to control The first heating structure heats the lamination compact.

The utility model designs the lamination tooling of the battery cell, on the one hand, by designing the lamination assembly and the motion control structure, it is convenient to move the lamination pressure block out of or into the lamination area in time during the lamination process for corresponding operations; On the one hand, by designing the first heating structure and the first heating control structure, the stacked unformed stacked battery chips at each stage can be heated in time, so that the adhesive layer with the adhesive layer separator is melted and the positive electrode sheets or the positive electrode sheets on both sides thereof are melted. The negative electrode sheet is adhered to avoid the displacement between the positive electrode sheet, the negative electrode sheet, and the separator with adhesive layer in the subsequent operation, which will affect the quality of the battery.

Further, the above-mentioned motion control structure includes a first motion control structure and a second motion control structure. The first motion control structure is used to control the rotation of the bracket in the mounting hole of the lamination table, and the second motion control structure is used to control the lamination pressing. Blocks move up or down on the track.

Further, the contact area between each of the above-mentioned laminated pressing blocks and the unformed stacked battery chip is 1/15-1/30 of the surface area of the unformed stacked battery chip.

Further, the above-mentioned laminated pressing block is one of a circle, a square, and a rectangle.

In an embodiment of the present invention, a second heating structure is provided in the lamination table, and the second heating structure is located just below the pressing position of the lamination pressing block.

The control structure further includes a second heating control structure for controlling the second heating structure to heat the lamination table.

In a second aspect, a method for laminating a lithium ion battery is also provided, using the lamination tooling of the first aspect to perform a lamination operation, including the following steps:

S1. The motion control structure controls the lamination pressing block to move out of the lamination area, so as to eliminate the occlusion of the lamination pressing block to the lamination area;

S2. On the lamination table, multiple lamination operations are performed with the adhesive layer diaphragm, the positive electrode sheet, the adhesive layer diaphragm, and the negative electrode sheet as a group to form unshaped stacked battery chips;

S3. The motion control structure controls the lamination pressing block to move to just above the lamination area, and makes the lamination pressing block move down and press the unformed stacked battery chips in S2;

S4, the first heating control structure starts to heat the laminated pressing block, and the laminated pressing block heats each adhesive layer diaphragm in the unformed stacked battery chip in S3, so that the adhesive layer in the adhesive layer diaphragm is melted;

S5. After heating, the motion control structure controls the lamination block to move out of the lamination area, so as to eliminate the blocking of the lamination block on the lamination area on the lamination table, and make the unformed stacked battery chips return to room temperature after heating, with an adhesive layer The separator sticks the positive and negative electrodes on both sides;

S6. Repeat S2 to S5 until the battery chip is formed.

In the stacking method of the lithium ion battery of the present invention, the stacking process of the battery chips is designed into multiple stages of stacking, heating, and cooling. The pressing block heats each layer of the adhesive layer diaphragm close to it, on the one hand, it can ensure that each layer of adhesive layer diaphragm can stick the positive electrode or negative electrode on both sides of it, so as to ensure the stability of each layer in the battery chip; On the one hand, the adhesive layer of each layer with adhesive layer separator that has been bonded to the positive electrode sheet or the negative electrode sheet at the lower part can also be melted again, which affects the stacking efficiency and quality of the battery chips.

Further, the heating temperature of the first heating control structure in the above step S4 is 70-130°C.

In a third aspect, a method for laminating a lithium ion battery is also provided, using the lamination tooling of the first aspect to perform a lamination operation, including the following steps:

S1. The motion control structure controls the lamination pressing block to move out of the lamination area, so as to eliminate the occlusion of the lamination pressing block on the lamination area on the lamination table;

S2. On the lamination table, multiple lamination operations are performed with the adhesive layer diaphragm, the positive electrode sheet, the adhesive layer diaphragm, and the negative electrode sheet as a group to form unshaped stacked battery chips;

S3. The motion control structure controls the lamination pressing block to move to just above the lamination area, and makes the lamination pressing block move down and press the unformed stacked battery chips in S2;

S4, the first heating control structure starts to heat the laminated pressing block, and the laminated pressing block heats each adhesive layer diaphragm in the unformed stacked battery chip in S3, so that the adhesive layer in the adhesive layer diaphragm is melted;

And/or the second heating control structure starts heating the lamination stage, and the lamination stage heats each adhesive layer diaphragm in the unformed stacked battery chip in S3, so that the adhesive layer in the adhesive layer diaphragm is melted;

S5. After heating, the motion control structure controls the lamination block to move out of the lamination area, so as to eliminate the occlusion of the lamination block to the lamination area, and to make the unformed stacked battery chips return to room temperature after heating, and the two are separated by an adhesive layer diaphragm. The positive and negative electrodes on the side are stuck;

S6. Repeat S2 to S5 until the battery chip is formed.

The stacking method of the lithium ion battery of the utility model designs the stacking process of the battery chip as a multi-stage stacking operation with stacking, heating and cooling as small groups, and the stacking pressing block is heated by the first heating structure, And/or the lamination table is heated through the second heating structure, and through the reasonable application of the first heating structure and the second heating structure, the lamination pressing block can heat the adjacent layers of the membrane with adhesive layers, on the one hand, it can be Make sure that each layer of the adhesive layer separator can stick the positive electrode or negative electrode on both sides to ensure the stability of each layer in the battery chip; The adhesive layer of the adhesive layer separator melts again, which affects the stacking efficiency and quality of the battery chips.

Further, in the above step S4, the heating temperature of the first heating control structure and the second heating control structure are the same, and the heating range is 70-130°C.

Further, in the second aspect and the third aspect, the pressing force of the lamination pressing block in step S3 is 200-1000N.

Compared with the prior art, the beneficial effects of the present utility model are:

1. By designing the lamination tooling of the battery cells, through the lamination assembly and the motion control structure, the lamination block can be easily moved out of or into the lamination area for corresponding operations, and the operation is simple and convenient; at the same time, the first heating The structure and the first heating control structure can heat the stacked unformed stacked battery chips in each stage in time, so that the adhesive layer with the adhesive layer separator is melted and the positive electrode sheets or negative electrode sheets on both sides are adhered, so that the To avoid the displacement between the positive electrode sheet, the negative electrode sheet, and the separator with the adhesive layer in the subsequent operation, which will affect the quality of the battery.

2. By designing a second heating structure in the lamination stage and adding a second heating control structure to the control structure, a reasonable combination of the second heating structure and the first heating structure can be realized, and the lamination efficiency of the battery chips can be further improved.

3. The stacking method of the present invention adopts a multi-stage stacking operation with stacking, heating and cooling as small groups, which can ensure that the adhesive layer diaphragm of each layer in the battery chip can be Negative tab sticks.

4. In the stacking method of the present invention, the first heating structure and the second heating structure can be used in combination to ensure that the film with adhesive layer of each layer can stick the positive electrode sheet or the negative electrode sheet on both sides, and also It can avoid repeated melting of the adhesive layer of the adhesive layer separator of the positive electrode sheet or the negative electrode sheet that has been bonded, reduce the cooling time in step S5, and affect the stacking efficiency of the battery chips.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only for the purpose of illustrating the embodiments of the present invention or the technical solutions in the prior art more clearly. For those of ordinary skill in the art, under the premise of no creative work , other drawings can also be obtained from these drawings.

Fig. 1 is a schematic diagram of dislocation of a positive electrode sheet and a negative electrode sheet in a battery cell in the prior art;

Fig. 2 is the top view of the lamination tooling of lithium ion battery in embodiment 1 and embodiment 2;

Fig. 3 is the side view of the lamination tooling of lithium ion battery in embodiment 1 and embodiment 2;

Among them, 1. lamination table; 2. lamination assembly; 3. bracket; 4. track; 5. lamination pressing block.

Detailed ways

The present utility model will be further described below with reference to specific embodiments, and the advantages and characteristics of the present utility model will become clearer with the description. However, these embodiments are only exemplary, and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solutions of the present invention can be modified or replaced without departing from the spirit and scope of the present invention, but these modifications and replacements all fall within the protection scope of the present invention .

In the description of this embodiment, it should be understood that the terms "center", "portrait", "horizontal", "top", "bottom", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention The description is created and simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

Example 1:

This specific embodiment provides a stacking tool for a lithium ion battery, which is used to form a battery cell after stacking a positive electrode sheet, a negative electrode sheet, and a separator with an adhesive layer for many times.

In one structure of the lamination tooling in this specific embodiment, as shown in FIG. 2 and FIG. 3 , the lamination tool includes a lamination table 1 on which a tablet pressing structure is installed. There are at least two tablet pressing assemblies 2 on the outer periphery of the stacking area on the stacking table 1 .

Specifically, the sheet pressing assembly 2 is used to press the unformed stacked battery chips on the stacking table 1 for subsequent operations, and the sheet pressing assemblies 2 can be distributed at any position around the unformed stacked battery chips. In the distribution position of the tablet pressing components 2, it is the best choice to symmetrically arrange the tablet pressing components 2 on the unformed stacked battery chips. For example, as shown in FIG. One side of the formed and stacked battery chips is designed with a pressing component 2 near the corners, and the unformed stacked battery chips can be well pressed and held by four pressing components 2 .

Among them, as shown in Figures 2 and 3, the tablet pressing assembly 2 includes a bracket 3, and the lower end of the bracket 3 is rotatably mounted on the lamination table 1; the position facing the lamination area on the bracket 3 is provided with a rail 4 along the vertical direction, and the rail 4 A laminated pressing block 5 is installed on the top, and a first heating structure is arranged in the laminated pressing block 5 (not shown in the drawings).

Specifically, the contact area between the above-mentioned laminated pressing block 5 and the unformed stacked battery chip is 1/15 to 1/30 of the surface area of the unformed stacked battery chip. Since the purpose of this design is to solve the problem of the unformed stacked battery chips being scattered or dislocated after stacking, in order to control the operating cost while ensuring the bonding quality and efficiency, this specific embodiment has a Unformed stacked cell chip contact area definition.

Further, the laminated pressing block 5 of the present invention can be of any shape, and the laminated pressing block 5 is selected to be one of a circle, a square, and a rectangle in order to facilitate processing and installation in this specific embodiment.

Wherein, the lamination tool also includes a control structure (not shown in the drawings), and the control structure includes a motion control structure and a first heating control structure.

Specifically, the motion control structure is used to control the position between the lamination pressing block 5 and the lamination area, and the motion control structure controls the lamination pressing block 5 to move, so that the lamination operation is performed after moving out of the lamination area; or after moving into the lamination area Carry out the pressing operation.

Further, the above-mentioned motion control structure includes a first motion control structure and a second motion control structure. The first motion control structure is used to control the rotation of the bracket in the mounting hole of the lamination table, and the second motion control structure is used to control the lamination pressing. The block 5 moves up or down on the track 4 . Specifically, the first motion control structure selects an existing drive structure (such as a motor, a cylinder, etc.), as long as it can realize the rotation of the bracket 3 in the mounting hole of the lamination table 1; the second motion control structure is the same, and the The existing driving structure only needs to be able to realize the upward or downward movement of the laminated pressing block 5 on the track 4 .

Specifically, the first heating control structure is used to control the first heating structure to heat the laminated pressing block 5, the first heating structure may be a heating sheet or a heating wire, and the first heating control structure is used to heat the first heating structure Set the temperature and heating process.

Example 2:

This specific embodiment provides a lamination method for lithium ion batteries, using the lamination tooling in Example 1 to perform lamination operations, including the following steps:

S1. The motion control structure controls the lamination pressing block to move out of the lamination area, so as to eliminate the occlusion of the lamination pressing block on the lamination area.

Specifically, in the motion control structure, the first motion control structure controls the bracket 3 to rotate on the lamination table 1, so that the bracket 3 drives the lamination block 5 to move out of the lamination area; the second motion control structure controls the lamination block 5 on the track 4. There is a certain distance between the upward movement and the stacking table 1 or the unformed stacked battery chips to avoid friction between the stacked pressing block 5 and the stacked table 1 or the unformed stacked battery chips when the bracket 3 is rotated.

S2. On the lamination stage, multiple lamination operations are performed with the adhesive-coated separator, the positive electrode sheet, the adhesive-coated diaphragm, and the negative electrode sheet as a group to form unshaped stacked battery chips.

Specifically, in the initial operation, first, place the separator with adhesive layer on the lamination area; secondly, place the positive electrode sheet on the separator with adhesive layer, and use the separator with adhesive layer to turn up and cover the positive electrode sheet; A negative electrode sheet is placed on the adhesive layer separator; the above steps are regarded as one group, and after multiple operations (that is, 3 to 5 groups), unshaped stacked battery chips with a certain thickness are formed.

S3. The motion control structure controls the lamination pressing block to move to just above the lamination area, and makes the lamination pressing block move down and press the unformed stacked battery chips in S2.

Specifically, in the motion control structure, the first motion control structure controls the bracket 3 to rotate on the lamination table 1, so that the bracket 3 drives the lamination block 5 to move into the lamination area; the second motion control structure controls the lamination block 5 on the track 4. Moving up and down compresses the unformed stacked battery chips.

Specifically, the pressing force of the laminated pressing block 5 in this step is 200-1000N.

S4. The first heating control structure starts to heat the laminated pressing block, and the laminated pressing block heats each membrane with adhesive layer in the unformed stacked battery chip in S3, so that the adhesive layer in the membrane with adhesive layer melts.

Specifically, the heating temperature of the first heating control structure is 70-130°C, and 70-130°C can ensure that the adhesive layer in the separator with adhesive layer is quickly melted without damaging the positive electrode sheet and the negative electrode sheet.

S5. After heating, the motion control structure controls the lamination block to move out of the lamination area, so as to eliminate the blocking of the lamination block on the lamination area on the lamination table, and make the unformed stacked battery chips return to room temperature after heating, with an adhesive layer The separator sticks the positive and negative electrodes on both sides;

After heating, firstly, the second motion control structure controls the lamination pressing block 5 to move upward along the track 4 to separate from the unformed stacked battery chips; secondly, the first motion control structure controls the rotation of the bracket 3 to move out of the lamination area. The process of restoring the room temperature of the unformed stacked battery chips after heating may be performed by natural cooling at room temperature or by cold air, or by other existing cooling methods, which will not be described herein again.

S6. Repeat S2 to S5 until the battery chip is formed.

In the stacking method of the lithium ion battery in this embodiment, the stacking process of the battery chips is designed into multiple stages of stacking, heating, and cooling. The pressing block heats each layer of the adhesive layer diaphragm close to it, on the one hand, it can ensure that each layer of adhesive layer diaphragm can stick the positive electrode or negative electrode on both sides of it, so as to ensure the stability of each layer in the battery chip; On the one hand, the adhesive layer of each layer with adhesive layer separator that has been bonded to the positive electrode sheet or the negative electrode sheet at the lower part can also be melted again, which affects the stacking efficiency and quality of the battery chips.

Example 3:

In another structure of the lamination tool in this specific embodiment, in addition to the structure in Embodiment 1, the lamination tool is provided with a second heating structure (not shown in the drawings) in the lamination table 1. The second heating The structure is located just below the pressing position of the lamination pressing block 5 . Meanwhile, the control structure further includes a second heating control structure, and the second heating control structure is used for controlling the second heating structure to heat the lamination table 1 . For the laminated tooling of this structure, the first heating structure and the second heating structure can be used at the same time, or only one of them can be used. The specific use needs to be selected according to the thickness of the unformed stacked battery chips. When the thickness of the battery chip is small, the first heating structure and the second heating structure can be heated at the same time; as the thickness of the unformed stacked battery chip gradually increases, in order to avoid the adhesive layer diaphragm at the lower part of the unformed stacked battery chip It is repeatedly heated and melted, thereby affecting the quality of the unformed stacked battery chips or the cooling time of the unformed stacked battery chips, and only the first heating structure needs to be used.

Example 4:

This specific embodiment provides a lamination method for lithium ion batteries, using the lamination tooling in Example 3 to perform lamination operations, including the following steps:

S1. The motion control structure controls the lamination pressing block to move out of the lamination area, so as to eliminate the occlusion of the lamination pressing block on the lamination area on the lamination table.

Specifically, in the motion control structure, the first motion control structure controls the bracket 3 to rotate on the lamination table 1, so that the bracket 3 drives the lamination block 5 to move out of the lamination area; the second motion control structure controls the lamination block 5 on the track 4. There is a certain distance between the upward movement and the stacking table 1 or the unformed stacked battery chips to avoid friction between the stacked pressing block 5 and the stacked table 1 or the unformed stacked battery chips when the bracket 3 is rotated.

S2. On the lamination table, multiple lamination operations are performed using the adhesive-coated diaphragm, the positive electrode sheet, the adhesive-coated diaphragm, and the negative electrode sheet to form unshaped stacked battery chips.

Specifically, in the initial operation, first, place the separator with adhesive layer on the lamination area; secondly, place the positive electrode sheet on the separator with adhesive layer, and use the separator with adhesive layer to turn up and cover the positive electrode sheet; A negative electrode sheet is placed on the adhesive layer separator; the above steps are regarded as one group, and after multiple operations (that is, 3 to 5 groups), unshaped stacked battery chips with a certain thickness are formed.

S3. The motion control structure controls the lamination pressing block to move to just above the lamination area, and makes the lamination pressing block move down and press the unformed stacked battery chips in S2.

Specifically, in the motion control structure, the first motion control structure controls the bracket 3 to rotate on the lamination table 1 , so that the bracket 3 drives the lamination pressure block 5 to move into the lamination area; the second motion control structure controls the lamination pressure block 5 on the track 4 Moving up and down compresses the unformed stacked battery chips. Specifically, the pressing force of the laminated pressing block 5 in this step is 200-1000N.

S4, the first heating control structure starts to heat the laminated pressing block, and the laminated pressing block heats each adhesive layer diaphragm in the unformed stacked battery chip in S3, so that the adhesive layer in the adhesive layer diaphragm is melted;

And/or the second heating control structure starts heating the lamination stage, and the lamination stage heats the membranes with adhesive layers in the unformed stacked battery chips in S3, so that the adhesive layers in the membranes with adhesive layers are melted.

The difference between this step and the second embodiment is that in this embodiment, the first heating structure and the second adding structure cooperate to heat each membrane with adhesive layer in the unshaped stacked battery chip.

The heating temperature of the first heating control structure and the second heating control structure is the same, and the heating temperature is 70 to 130 ° C. 70 to 130 ° C can ensure that the adhesive layer in the diaphragm is not damaged on the basis of not damaging the positive electrode sheet and the negative electrode sheet. The layers are quickly melted.

S5. After heating, the motion control structure controls the lamination block to move out of the lamination area, so as to eliminate the occlusion of the lamination block to the lamination area, and to make the unformed stacked battery chips return to room temperature after heating, and the two are separated by an adhesive layer diaphragm. The positive and negative electrodes on the side are stuck.

After heating, firstly, the second motion control structure controls the lamination pressing block 5 to move upward along the track 4 to separate from the unformed stacked battery chips; secondly, the first motion control structure controls the rotation of the bracket 3 to move out of the lamination area. The process of restoring the room temperature of the unformed stacked battery chips after heating may be performed by natural cooling at room temperature or by cold air, or by other existing cooling methods, which will not be described herein again.

S6. Repeat S2 to S5 until the battery chip is formed.

In the stacking method of the lithium ion battery in this embodiment, the stacking process of the battery chips is designed as a multi-stage stacking operation with stacking, heating and cooling as small groups, and the stacking pressing block is heated by the first heating structure, And/or the lamination table is heated through the second heating structure, and through the reasonable application of the first heating structure and the second heating structure, the lamination pressing block can heat the adjacent layers of the membrane with adhesive layers, on the one hand, it can be Make sure that each layer of the adhesive layer separator can stick the positive electrode or negative electrode on both sides to ensure the stability of each layer in the battery chip; The adhesive layer of the adhesive layer separator melts again, which affects the stacking efficiency and quality of the battery chips.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (5)

1. The utility model provides a lithium ion battery's lamination frock for form battery electricity core after piling positive plate, negative pole piece, area glued layer diaphragm many times, its characterized in that: the lamination tool comprises a lamination table, wherein a tabletting structure is arranged on the lamination table, the tabletting structure comprises at least 2 tabletting assemblies which are uniformly distributed on the periphery of a lamination area on the lamination table, and the tabletting assemblies are used for pressing, holding and heating unformed laminated battery chips on the lamination table to form the battery cell;

the tabletting assembly comprises a bracket, and the lower end of the bracket is rotatably arranged on the laminating table; a track is arranged on the support in the vertical direction at a position facing the direction of the lamination area, a lamination pressing block is mounted on the track, and a first heating structure is arranged in the lamination pressing block;

the lamination tool further comprises a control structure, the control structure comprises a motion control structure and a first heating control structure, the motion control structure is used for controlling the position between the lamination pressing block conversion region and the lamination region, and the first heating control structure is used for controlling the first heating structure to heat the lamination pressing block.

2. The lamination tooling of claim 1, wherein: the motion control structure comprises a first motion control structure and a second motion control structure, the first motion control structure is used for controlling the support to rotate in the mounting hole of the lamination table, and the second motion control structure is used for controlling the lamination pressing block to move upwards or downwards on the track.

3. The lamination tooling of claim 1, wherein: the contact area of each lamination pressing block and the unformed laminated battery chip is 1/15-1/30 of the surface area of the unformed laminated battery chip.

4. The lamination tooling of claim 3, wherein: the laminated pressing block is one of a circle, a square and a rectangle.

5. The lamination frock of any claim 1 ~ 4, its characterized in that: a second heating structure is arranged in the lamination table and is positioned right below the pressing position of the lamination pressing block;

the control structure further comprises a second heating control structure, and the second heating control structure is used for controlling the second heating structure to heat the lamination table.

Images