Lamination tool of solid-state battery

Abstract

The utility model discloses a lamination tool of a solid-state battery, which comprises a tool main body, the tool main body is provided with a cavity, and a battery cell structure comprises unit sheets; positioning pieces are arranged at opposite angles of the tool main body and comprise a positive electrode group positioning block and a negative electrode group positioning block; the tool body comprises a first frame and a second frame, a pressing piece is arranged on the first frame and comprises a first pressing block, and when the length extending direction of the first pressing block is parallel to the length extending direction of the first frame, the first pressing block does not make contact with the unit pieces. When the length extension direction of the first pressing block intersects with the length extension direction of the first frame, the first pressing block is used for pressing the unit piece. The second frame is provided with a material taking opening, and the fixing piece is located at the material taking opening. According to the utility model, the unit sheets can be accurately positioned during manual lamination, so that the action of adjusting and positioning after visual position observation during manual lamination is avoided, and the alignment precision of the unit sheets with different polarities and the lamination efficiency of operators are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field more particularly, relate to the laminated tool of solid state battery. BACKGROUND

[0002] Solid state battery is a new type of battery technology, it uses solid electrolyte instead of traditional liquid electrolyte, compared with traditional lithium ion battery, solid state battery has higher energy density, faster charging speed, higher safety and longer life, is one of the important development directions of future battery technology.

[0003] At present, most of the solid state battery is in the new research and development stage, the existing laminated machine can not meet the size of the new research and development battery, and the newly purchased or reformed laminated machine needs high cost, therefore can only produce through the manual laminating mode. Manual laminating process completely relies on the work experience of operating personnel, and the position of the pole piece is placed and observed by visual observation, and the position is repeatedly adjusted, which is time-consuming and easy to damage the pole piece, causing product defects.

[0004] Many existing laminated tools are mostly applied to liquid lithium ion batteries, which are not suitable for solid state batteries. In addition, during manual lamination, it is difficult to ensure the alignment between the positive pole piece unit, the negative pole piece unit and the buffer piece unit. During the laminating process, it is easy to cause misalignment and short circuit, thereby causing the entire solid state battery to need to be laminated again, which seriously affects the efficiency and yield of the laminating work. Therefore, it is a technical problem that needs to be solved in the field. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a laminated tool for solid state battery to solve the problem that the manual laminating process completely relies on the work experience of operating personnel, and the position of the pole piece is placed and observed by visual observation, and the position is repeatedly adjusted, which is time-consuming and easy to damage the pole piece.

[0006] The application provides a laminated tool for solid state battery, which comprises a tool body, the tool body has a cavity for accommodating a battery structure, and the battery structure comprises at least unit pieces with different polarities.

[0007] The diagonal of the tool body is provided with a positioning member, the positioning member comprises positive group positioning blocks and negative group positioning blocks alternately placed, and the positive group positioning blocks and the negative group positioning blocks are respectively used for positioning the unit pieces with different polarities.

[0008] The tool body comprises oppositely arranged first and second side frames, wherein the first side frame is provided with a pressing member, the pressing member comprises a first pressing block, when the length extension direction of the first pressing block is parallel to the length extension direction of the first side frame, the first pressing block is not in contact with the unit piece, when the length extension direction of the first pressing block intersects with the length extension direction of the first side frame, the first pressing block is used for pressing the unit piece; the second side frame has a material taking opening in communication with the cavity, and a fixing member is located at the material taking opening, and the fixing member is used for fixing the stacked battery cell structure.

[0009] Optionally, the pressing member further comprises a guide column, an elastic member is sleeved on the outer surface of the guide column, the guide column is connected with the first side frame through the first pressing block, and the first pressing block rotates around the guide column.

[0010] Optionally, the fixing member comprises a fixing clamp seat and a base connected with the fixing clamp seat.

[0011] The fixing clamp seat is provided with a rotating member and a second pressing block connected with the rotating member away from the base, the second pressing block is located on the side of the rotating member close to the base, the rotating member drives the second pressing block to reciprocate along the thickness direction of the second side frame, and the second pressing block is used for pressing the stacked battery cell structure.

[0012] Optionally, the fixing clamp seat comprises a top plate and a side plate connected with the top plate, the side plate is located on the side of the top plate close to the base, and the side plate is connected with the base, a reverse L-shaped structure is formed between the top plate and the side plate, and the opening of the reverse L-shaped structure faces the unit piece.

[0013] The rotating member comprises a rotating bolt, and the rotating bolt is connected with the second pressing block through the top plate.

[0014] Optionally, the tool body further comprises oppositely arranged third and fourth side frames connected with the first and second side frames respectively.

[0015] The top angles formed between the third side frame and the second side frame and between the first side frame and the fourth side frame are provided with positioning grooves matched with the positive electrode group positioning blocks and the negative electrode group positioning blocks, and the positive electrode group positioning blocks and the negative electrode group positioning blocks are alternately inserted into the positioning grooves.

[0016] Optionally, the positive electrode group positioning block comprises a first positive electrode positioning block and a second positive electrode positioning block, the first positive electrode positioning block and the second positive electrode positioning block each comprise a first horizontal block and a first vertical block connected with the first horizontal block, a first L-shaped structure is formed between the first horizontal block and the first vertical block, and the opening of the first L-shaped structure in the first positive electrode positioning block and the opening of the first L-shaped structure in the second positive electrode positioning block are both directed towards the unit sheet.

[0017] The negative electrode group positioning block comprises a first negative electrode positioning block and a second negative electrode positioning block, the first negative electrode positioning block and the second negative electrode positioning block each comprise a second horizontal block and a second vertical block connected with the second horizontal block, a second L-shaped structure is formed between the second horizontal block and the second vertical block, and the opening of the second L-shaped structure in the first negative electrode positioning block and the opening of the second L-shaped structure in the second negative electrode positioning block are both directed towards the unit sheet.

[0018] Optionally, the unit sheet comprises a buffer sheet unit, a negative electrode sheet unit and a positive electrode sheet unit, the number of the positive electrode sheet units is greater than the number of the negative electrode sheet units, the negative electrode sheet unit is located between two adjacent positive electrode sheet units, and the buffer sheet unit is located on the side of the positive electrode sheet unit away from the negative electrode sheet unit.

[0019] Optionally, the size of the buffer sheet unit is a, the size of the negative electrode sheet unit is b, and the size of the positive electrode sheet unit is c, wherein a is greater than b, and b is greater than c.

[0020] Optionally, a pressing groove is formed in the first frame, the pressing groove is recessed downward along the thickness direction of the first frame, and the pressing piece is located in the pressing groove.

[0021] Optionally, a foot pad is arranged at the bottom of the tool body.

[0022] Compared with the prior art, the laminated tool for solid-state batteries provided by the utility model at least has the following beneficial effects:

[0023] The solid-state battery lamination tool provided by the utility model, including tool main part, tool main part has cavity that contains electric core structure, electric core structure at least includes polarity different unit sheet, diagonal of tool main part is provided with positioning piece, positioning piece includes positive pole group positioning block and negative pole group positioning block that place alternately, positive pole group positioning block and negative pole group positioning block alternate positioning different polarity unit sheet, tool main part includes first frame and second frame that set up oppositely, wherein, first frame is provided with pressure tight piece, pressure tight piece includes first pressure tight block, when the length extension direction of first pressure tight block is parallel with the length extension direction of first frame, first pressure tight block does not contact with unit sheet, when the length extension direction of first pressure tight block intersects with the length extension direction of first frame, first pressure tight block is used for pressing unit sheet, second frame has material taking opening that is connected with cavity, fixing piece is located at material taking opening, fixing piece is used for fixing stacked electric core structure, adopt above-mentioned scheme, through mutual coordination between tool main part, positioning piece, pressure tight piece and fixing piece, not only can accurate positioning be carried out to different polarity unit sheet when artificial lamination, avoided the action that needs visual position to carry out adjustment positioning when artificial lamination, improved the alignment accuracy of different polarity unit sheet and the lamination efficiency of operating personnel, and the lamination process of electric core structure can be standardized, the artificial lamination accuracy is quantified, the operation error of personnel with different working experience is avoided, and the consistency and yield of artificial lamination of solid-state battery are improved.

[0024] Of course, any product implementing the utility model does not necessarily need to achieve all the technical effects described above.

[0025] Other features of the utility model and its advantages will become clear from the following detailed description of exemplary embodiments of the utility model with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings incorporated in and forming a part of the specification illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model.

[0027] Figure 1 It is a structure schematic view of a solid-state battery lamination tool provided by the utility model;

[0028] Figure 2 It is a structure schematic view of a solid-state battery lamination tool provided by the utility model except fixing piece;

[0029] Figure 3 It is a structure schematic view of unit sheet provided by the utility model;

[0030] Figure 4 It is a structure schematic view of positive pole group positioning block positioning positive pole sheet unit in the solid-state battery lamination tool provided by the utility model;

[0031] Figure 5 is a structure schematic view of the negative pole piece unit positioned by the negative pole group positioning block of the laminated tooling of the solid-state battery provided by the utility model;

[0032] Figure 6 is a structure schematic view of the tooling main body provided by the utility model;

[0033] Figure 7 is a structure schematic view of the fixing part provided by the utility model;

[0034] Figure 8 is a use state schematic view of the laminated tooling of the solid-state battery provided by the utility model except the fixing part;

[0035] Figure 9 is a structure schematic view of the buffer piece unit provided by the utility model;

[0036] Figure 10 is a structure schematic view of the negative pole piece unit provided by the utility model;

[0037] Figure 11 is a structure schematic view of the positive pole piece unit provided by the utility model. DETAILED DESCRIPTION

[0038] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0039] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way limiting to the scope of the present application and its applications or uses.

[0040] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and apparatus can be considered part of the present application.

[0041] In all of the compositions and methods shown and discussed herein, any specific values should be interpreted as merely exemplary, and are not to be interpreted as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0042] It should be noted that like references and characters herein relate to parts, unless otherwise stated. The parts are thus discussed only once and are not discussed further where only one of them is discussed in the following description.

[0043] Referring to Figures 1-5 the drawings, Figure 1It is the structure schematic view of a laminated tooling of a solid-state battery provided by the utility model; Figure 2 It is the structure schematic view of a laminated tooling of a solid-state battery provided by the utility model except fixing parts; Figure 3 It is the structure schematic view of a unit sheet provided by the utility model; Figure 4 It is the structure schematic view of a laminated tooling of a solid-state battery provided by the utility model in which the positive electrode group positioning block positions the positive electrode sheet unit; Figure 5 It is the structure schematic view of a laminated tooling of a solid-state battery provided by the utility model in which the negative electrode group positioning block positions the negative electrode sheet unit; the laminated tooling of a solid-state battery provided by the embodiment comprises a tooling main body 1, the tooling main body 1 has a cavity 16 accommodating an electric core structure, the electric core structure at least includes unit sheets 6 with different polarities, the tooling main body 1 is diagonally provided with a positioning part 2, the positioning part 2 includes alternately placed positive electrode group positioning blocks 21 and negative electrode group positioning blocks 22, the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22 alternately position the unit sheets 6 with different polarities;

[0044] The tooling main body 1 comprises oppositely arranged first and second side frames 11 and 12, wherein the first side frame 11 is provided with a pressing part 3, the pressing part 3 comprises a first pressing block 31, when the length extension direction of the first pressing block 31 is parallel to the length extension direction of the first side frame 11, the first pressing block 31 does not contact the unit sheet 6, when the length extension direction of the first pressing block 31 intersects the length extension direction of the first side frame 11, the first pressing block 31 is used to press the unit sheet 6; the second side frame 12 has a material taking opening 120 communicating with the cavity 16, a fixing part 4 is located at the material taking opening 120, and the fixing part 4 is used to fix the stacked electric core structure.

[0045] Combining Figure 1 And Figure 2 As shown in the above laminated tooling of a solid-state battery, the laminated tooling of a solid-state battery can be used to laminate the solid-state battery by hand, the tooling main body 1 is the main body frame of the entire laminated tooling, the middle part of the tooling main body 1 has a cavity 16, the cavity 16 can accommodate an electric core structure, the electric core structure at least includes unit sheets 6 with different polarities, for example, the unit sheets 6 include a plurality of mutually stacked positive electrode sheet units 61, negative electrode sheet units 62 and buffer sheet units 63 (see Figure 3As shown in FIG. 1, only two positive electrode sheet units 61, one negative electrode sheet unit 62 and two buffer sheet units 63 are taken as an example in this embodiment, and they are stacked in order from bottom to top as one buffer sheet unit 63, one positive electrode sheet unit 61, the negative electrode sheet unit 62, another positive electrode sheet unit 61 and another buffer sheet unit 63, and another buffer sheet unit 63 is not shown in the figure. That is, one negative electrode sheet unit 62 is sandwiched between two positive electrode sheet units 61, and buffer sheet units 63 are arranged on the sides of the two positive electrode sheet units 61 away from the negative electrode sheet unit 62. Of course, according to actual conditions, one positive electrode sheet unit 61 can also be sandwiched between two negative electrode sheet units 62, which is not limited in this embodiment.

[0046] Referring to Figure 1 As shown in FIG. 2, the tool body 1 can have a rectangular structure, and the positioning member 2 includes positive electrode group positioning blocks 21 and negative electrode group positioning blocks 22 arranged alternately. The number of positive electrode group positioning blocks 21 can be two, and the two positive electrode group positioning blocks 21 are respectively inserted into the diagonal positions of the tool body 1. The positive electrode group positioning blocks 21 are used to position the length direction and width direction of the positive electrode sheet unit 61 (as shown in FIG. 1). Figure 4 As shown in FIG. 2, the number of negative electrode group positioning blocks 22 can be two, and the two negative electrode group positioning blocks 22 are respectively inserted into the diagonal positions of the tool body 1. The negative electrode group positioning blocks 22 are used to position the length direction and width direction of the negative electrode sheet unit 62 (as shown in FIG. 1). Figure 5

[0047] Continuing to refer to Figure 1 As shown in FIG. 3, the tool body 1 includes a first frame 11 and a second frame 12 arranged oppositely. The length extension direction of the first frame 11 is the same as that of the second frame 12, that is, the first frame 11 and the second frame 12 are parallel to each other. Specifically, the first frame 11 and the second frame 12 can be the long sides of the tool body 1. The pressing member 3 is arranged on the first frame 11, and the pressing member 3 includes a first pressing block 31. The first pressing block 31 can have a rectangular structure, specifically, a rectangular structure with rounded corners, which can avoid damaging the cell structure when pressing the cell structure.

[0048] Continuing to refer to Figure 2 As shown in FIG. 4, when the length extension direction of the first pressing block 31 is parallel to the length extension direction of the first frame 11, the first pressing block 31 does not contact the unit sheet 6. Figure 1 As shown in FIG. 5, when the length extension direction of the first pressing block 31 intersects the length extension direction of the first frame 11, the first pressing block 31 is used to press the unit sheet 6 to prevent the position of the unit sheet 6 from being deviated when the positioning member 2 is replaced or other operations are performed.

[0049] ​Optionally, when the length extension direction of the first clamping block 31 is perpendicular to the length extension direction of the first frame 11, the first clamping block 31 can better clamp the cell structure.

[0050] A material inlet 120 is opened on the second frame 12. The material inlet 120 is connected to the cavity 16. The fixing member 4 is located at the material inlet 120. After the stacking work is completed, the stacked cell structure needs to be transferred. The stacked cell structure is fixed by rotating and pressing with a fixing clamp, and then the stacked cell structure is taken out from the stacking fixture.

[0051] The aforementioned feed port 120 not only facilitates the fixing of the stacked battery cell structure by the fixing member 4, but also allows the stacked battery cell structure to be fixed from the feed port 120, while also reducing the weight of the second frame 12.

[0052] Optionally, along the direction from the first frame 11 to the second frame 12, the orthographic projection of the clamping member 3 and the orthographic projection of the fixing member 4 at least partially overlap, such as along the direction from the first frame 11 to the second frame 12, the orthographic projection of the clamping member 3 and the orthographic projection of the fixing member 4 partially overlap, or along the direction from the first frame 11 to the second frame 12, the orthographic projection of the clamping member 3 and the orthographic projection of the fixing member 4 completely overlap, so as to ensure that the forces on each part of the stacked unit sheet 6 are balanced, prevent the stacked cell structure from shifting, and thus improve production quality.

[0053] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment continues to illustrate with two positive electrode units 61, one negative electrode unit 62, and two buffer units 63. The specific usage steps are as follows: First, place one buffer unit 63 into the cavity 16 of the fixture body 1; Second, place two positive electrode group positioning blocks 21 of the same size, and place one positive electrode unit 61 (e.g., Figure 4 (As shown); Third, the length extension direction of the first pressing block 31 in the pressing member 3 is perpendicular to the length extension direction of the first frame 11, and the positive electrode unit 61 is pressed down by the first pressing block 31 in the pressing member 3, and then the two positive electrode group positioning blocks 21 are removed; Fourth, two negative electrode group positioning blocks 22 of the same size are placed in, and one negative electrode unit 62 is placed in. Figure 5Fifth, the length extension direction of the first pressing block 31 in the pressing member 3 is parallel to the length extension direction of the first frame 11, and then is moved upward to be perpendicular to the length extension direction of the first frame 11, and the first pressing block 31 is used to press the negative sheet unit 62 downward, and then the two negative group positioning blocks 22 are taken away; sixth, the two positive group positioning blocks 21 are put in, and a positive sheet unit 61 is put in; seventh, the length extension direction of the first pressing block 31 in the pressing member 3 is parallel to the length extension direction of the first frame 11, and then is moved upward to be perpendicular to the length extension direction of the first frame 11, and the first pressing block 31 is used to press the positive sheet unit 61 downward, and then the two positive group positioning blocks 21 are taken away; eighth, a buffer sheet unit 63 is put into the cavity 16 of the tool main body 1, the length extension direction of the first pressing block 31 in the pressing member 3 is parallel to the length extension direction of the first frame 11, and then is moved upward to be perpendicular to the length extension direction of the first frame 11, and the first pressing block 31 is used to press the buffer sheet unit 63 downward, and so on according to the above sequence to stack the sheets in turn until the required number of sheet layers of the battery cell structure is reached; ninth, the fixing member 4 is used to clamp and fix the battery cell structure from the material taking port 120, the first pressing block 31 in the pressing member 3 is loosened, the stacked battery cell structure is taken out, and the next process is performed.

[0054] Compared with the prior art, the solid-state battery sheet tool provided by the embodiment at least has the following beneficial effects:

[0055] The solid-state battery lamination tool provided by the embodiment comprises a tool main body 1, the tool main body 1 has a cavity 16 for accommodating an electric core structure, and the electric core structure at least comprises unit sheets 6 of different polarities; a positioning piece 2 is arranged at the diagonal of the tool main body 1, the positioning piece 2 comprises positive electrode group positioning blocks 21 and negative electrode group positioning blocks 22 which are alternately arranged, and the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22 alternately position the unit sheets 6 of different polarities; the tool main body 1 comprises oppositely arranged first and second side frames 11 and 12, wherein the first side frame 11 is provided with a pressing piece 3, the pressing piece 3 comprises a first pressing block 31, when the length extension direction of the first pressing block 31 is parallel to the length extension direction of the first side frame 11, the first pressing block 31 is not in contact with the unit sheet 6, and when the length extension direction of the first pressing block 31 intersects the length extension direction of the first side frame 11, the first pressing block 31 is used for pressing the unit sheet 6; the second side frame 12 has a material taking opening 120 which is communicated with the cavity 16, and a fixing piece 4 is arranged at the material taking opening 120, the fixing piece 4 is used for fixing the stacked electric core structure, by the mutual cooperation among the tool main body 1, the positioning piece 2, the pressing piece 3 and the fixing piece 4, the unit sheets 6 of different polarities can be accurately positioned during manual lamination, the action of visual positioning and then adjusting and positioning during manual lamination is avoided, the alignment accuracy of the unit sheets 6 of different polarities and the lamination efficiency of the operator are improved, the lamination process of the electric core structure can be standardized, the manual lamination accuracy can be quantified, the operation error of personnel with different working experiences is avoided, and the consistency and the yield of the manual lamination of the solid-state battery are improved.

[0056] In an alternative embodiment, in combination with Figure 1 and Figure 6 as shown, Figure 6 is a structural schematic view of the tool main body; the pressing piece 3 further comprises a guide column 32, an elastic piece 33 is sleeved on the outer surface of the guide column 32, the guide column 32 is connected with the first side frame 11 through the first pressing block 31, and the first pressing block 31 rotates around the guide column 32.

[0057] Continuing to refer to Figure 1 as shown, the pressing piece 3 further comprises a guide column 32, the guide column 32 can be a fastener such as a guide bolt, a first outer thread (not marked in the figure) is arranged on the outer surface of the guide bolt, an elastic piece 33 such as a spring is sleeved on the outer surface of the guide bolt, the first pressing block 31 can have a rectangular structure with rounded corners, an inner bolt hole (such as Figure 6The guide bolt is threadedly connected between the first pressing block 31 and the first frame 11 (as shown), for example, the guide bolt is first threadedly connected with the first pressing block 31, and then the guide bolt with the first pressing block 31 is threadedly connected with the first frame 11, so that the first pressing block 31 can rotate freely around the guide bolt, for example, clockwise or counterclockwise.

[0058] The guide column 32 is used for fixing the spring, for example, the spring is sleeved on the outer surface of the spring, and the spring can also be guided, and the guide column 32 is also the rotating shaft of the first pressing block 31; the spring is always in a compressed state, and can provide pressure to the first pressing block 31, so as to press the stacked unit pieces 6; the first pressing block 31 can rotate freely around the guide column 32 sleeved with the spring, and press the stacked unit pieces 6 under the pressure of the spring, so as to prevent the unit pieces 6 from being touched during replacement of the positioning member 2 or other operations, and causing the unit pieces 6 to be deviated, the first pressing block 31 has two positions, for example, an initial position and a working position, the initial position is that the first pressing block 31 is pressed on the first frame 11, and the side surface of the first pressing block 31 is parallel to the side surface of the first frame 11; the working position is that the first pressing block 31 is pressed on the unit pieces 6 in the cavity 16, and the side surface of the first pressing block 31 is perpendicular to the side surface of the first frame 11.

[0059] By using the above scheme, the unit pieces 6 can be prevented from being deviated, and the overall structure is simple and convenient for manual operation.

[0060] In combination with Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the embodiment continues to illustrate with two positive plate units 61, one negative plate unit 62 and two buffer plate units 63, first, when one positive plate unit 61 is put in, the first compression block 31 is rotated clockwise around the guide column 32 to compress the positive plate unit 61, and then two positive group positioning blocks 21 are taken out; second, two negative group positioning blocks 22 of the same size are put in, and one negative plate unit 62 is put in; third, the first compression block 31 is rotated clockwise around the guide column 32 to the horizontal position with the first frame 11, and then it is moved up and rotated to the vertical position between the first frame 11, and the negative plate unit 62 is compressed by the first compression block 31, and then the two negative group positioning blocks 22 are taken out; fourth, two positive group positioning blocks 21 are put in, and one positive plate unit 61 is put in; fifth, the first compression block 31 is rotated clockwise around the guide column 32 to the horizontal position between the first frame 11, and then it is moved up and rotated to the vertical position between the first frame 11, and the positive plate unit 61 is compressed by the first compression block 31, and then the two positive group positioning blocks 21 are taken out; fifth, one buffer plate unit 63 is put into the cavity 16 of the tool main body 1, and the first compression block 31 is rotated around the guide column 32 to the horizontal position with the first frame 11, and then it is moved up and rotated to the vertical position between the first frame 11, and the buffer plate unit 63 is compressed by the first compression block 31.

[0061] In an alternative embodiment, in combination with Figure 1 and Figure 7 As shown, Figure 7 is a structural schematic diagram of a fixing piece provided by the utility model; the fixing piece 4 in the embodiment includes a fixed clamp seat 41 and a base 42 connected with the fixed clamp seat 41;

[0062] The fixed clamp seat 41 is provided with a rotating piece 43 and a second compression block 432 connected with the rotating piece 43 on the side away from the base 42, the second compression block 432 is located on the side of the rotating piece 43 close to the base 42, the rotating piece 43 drives the second compression block 432 to reciprocate along the thickness direction of the second frame 12, and the second compression block 432 is used for compressing the stacked battery cell structure.

[0063] The fixed clamp seat 41 is used for clamping and fixing the stacked battery cell structure, and optionally, the fixed clamp seat 41 and the base 42 can be an integral structure, which can greatly shorten the assembly time and has stable overall structure.

[0064] The rotating piece 43 can drive the second compression block 432 to move up and down along the thickness direction of the second frame 12, the second compression block 432 is in contact with and compresses the stacked battery cell structure, the second compression block 432 can be a circular structure, the contact area with the battery cell structure is increased, so that more uniform pressure distribution is ensured, the gap between different unit plates 6 in the battery cell structure is reduced, and the stability and safety of the battery cell structure are improved.

[0065] When the stacking work is completed, the stacked battery cell structure needs to be transferred, the fixed clamping seat 41 clamps the stacked battery cell structure, the second pressing block 432 is driven by the rotating piece 43 to move up and down along the thickness direction of the second frame 12 to press the stacked battery cell structure, and then the stacked battery cell structure is taken out from the tool main body 1 to proceed to the next process.

[0066] In an optional embodiment, the fixed clamping seat 41 comprises a top plate 410 and a side plate 411 connected with the top plate 410, the side plate 411 is located on the side of the top plate 410 close to the base 42, and the side plate 411 is connected with the base 42, and a reverse L-shaped structure is formed between the top plate 410 and the side plate 411, and the opening of the reverse L-shaped structure faces the unit sheet 6.

[0067] The rotating piece 43 comprises a rotating bolt 431, and the rotating bolt 431 is connected with the second pressing block 432 through the top plate 410.

[0068] In combination with Figure 1 and Figure 7 As shown in the drawings, the fixed clamping seat 41 comprises a top plate 410 and a side plate 411, a 90° angle is formed between the top plate 410 and the bottom plate 15, the side plate 411 is fixedly connected with the base 42, a reverse L-shaped structure is formed between the top plate 410 and the side plate 411, the opening of the reverse L-shaped structure faces the unit sheet 6, and the reverse L-shaped structure is used for fixing the stacked battery cell structure and is connected with the base 42.

[0069] The rotating bolt 431 is a rotating bolt 431 with a second external thread (not labeled in the figure), and the top plate 410 and the second pressing block 432 are provided with internal thread holes (not shown in the figure) matched with the second external thread, the internal thread hole on the top plate 410 penetrates the top plate 410 along the thickness direction of the second frame 12, and the internal thread hole of the second pressing block 432 penetrates the second pressing block 432 along the thickness direction of the second frame 12. Of course, according to the actual situation, the internal thread hole of the second pressing block 432 does not penetrate the second pressing block 432 along the thickness direction of the second frame 12. In specific operation, the second external thread of the rotating bolt 431 is threadedly connected with the internal thread hole of the top plate 410, and then the bottom end of the rotating bolt 431 is threadedly connected with the internal thread hole of the second pressing block 432.

[0070] The overall structure of the fixed clamping seat 41 and the rotating piece 43 is simple, which reduces the manufacturing difficulty and is convenient to operate.

[0071] Optionally, the cross section shape of the base 42 along the thickness direction of the second frame 12 is a concave shape, and the opening thereof faces downward. In subsequent operation, the stacked battery cell structure is moved to the next process by the concave structure.

[0072] In an alternative embodiment, in combination with Figure 4 、 Figure 5 、 Figure 6 and Figure 8 , Figure 8 is a use state diagram of the laminated tooling of the solid-state battery provided by the present application, in addition to the fixing part; the tooling main body 1 further comprises a third frame 13 and a fourth frame 14 arranged oppositely, which are connected with the first frame 11 and the second frame 12 respectively;

[0073] The top corner formed between the third frame 13 and the second frame 12 and the top corner formed between the first frame 11 and the fourth frame 14 are provided with positioning grooves 111 matched with the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22, and the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22 are alternately inserted into the positioning grooves 111.

[0074] The third frame 13 and the fourth frame 14 are arranged oppositely and parallel to each other, and the third frame 13 and the fourth frame 14 can be short frames of the tooling main body 1, one end of the third frame 13 and the fourth frame 14 is connected with the head and tail ends of the first frame 11 respectively, the other end of the third frame 13 and the fourth frame 14 is connected with the head and tail ends of the second frame 12 respectively, and the first frame 11, the third frame 13, the second frame 12 and the fourth frame 14 form a rectangular structure.

[0075] The top corner formed between the third frame 13 and the second frame 12 and the top corner formed between the first frame 11 and the fourth frame 14 are provided with positioning grooves 111 matched with the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22, and the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22 are alternately inserted into the positioning grooves 111, and since the positive electrode group positioning blocks 21 and the negative electrode group positioning blocks 22 are alternately placed, different positive electrode positioning blocks in the positive electrode group positioning blocks 21 are placed in the top corner formed between the third frame 13 and the second frame 12 and the top corner formed between the first frame 11 and the fourth frame 14, and after the positioning of the positive electrode unit sheet 6 is completed, different negative electrode positioning blocks in the negative electrode group positioning blocks 22 are placed in the top corner formed between the third frame 13 and the second frame 12 and the top corner formed between the first frame 11 and the fourth frame 14, so as to facilitate the positioning of the positive electrode unit sheet 6 and the negative electrode unit sheet 6 respectively.

[0076] Optionally, continuing to refer to Figure 6 , the third frame 13 and the fourth frame 14 are provided with tab grooves 130 on the side close to the fourth frame 14 and the side close to the third frame 13 respectively, the tab grooves 130 are matched with the tabs of the positive electrode sheet unit 61 and the negative electrode sheet unit 62, so as to place the tabs of the positive electrode sheet unit 61 and the negative electrode sheet unit 62 in the tab grooves 130, and ensure the stability and safety of the tabs of the positive electrode sheet unit 61 and the negative electrode sheet unit 62.

[0077] In an alternative embodiment, the positive electrode group positioning block 21 comprises a first positive electrode positioning block 210 and a second positive electrode positioning block 211, both of which comprise a first horizontal block 2101 and a first vertical block 2102 connected to the first horizontal block 2101, forming a first L-shaped structure between the first horizontal block 2101 and the first vertical block 2102, the opening of the first L-shaped structure in the first positive electrode positioning block 210 and the opening of the first L-shaped structure in the second positive electrode positioning block 211 both face the unit sheet 6;

[0078] The negative electrode group positioning block 22 comprises a first negative electrode positioning block 220 and a second negative electrode positioning block 221, both of which comprise a second horizontal block 2201 and a second vertical block 2202 connected to the second horizontal block 2201, forming a second L-shaped structure between the second horizontal block 2201 and the second vertical block 2202, the opening of the second L-shaped structure in the first negative electrode positioning block 220 and the opening of the second L-shaped structure in the second negative electrode positioning block 221 both face the unit sheet 6.

[0079] Continuing to refer to Figure 4 and Figure 5 , the size of the first positive electrode positioning block 210 and the size of the second positive electrode positioning block 211 are the same, the size of the first negative electrode positioning block 220 and the size of the second negative electrode positioning block 221 are the same, the size of the first positive electrode positioning block 210 is different from the size of the first negative electrode positioning block 220, the size of the first positive electrode positioning block 210 matches the size of the positive electrode unit sheet 6, and the first positive electrode positioning block 210 and the second positive electrode positioning block 211 cooperate with each other to ensure that the positive electrode unit sheet 6 can be stably installed in the predetermined position and avoid moving or falling off due to external force; the size of the first negative electrode positioning block 220 matches the size of the negative electrode unit sheet 6, and the first negative electrode positioning block 220 and the second negative electrode positioning block 221 cooperate with each other to ensure that the negative electrode unit sheet 6 can be stably installed in the predetermined position and avoid moving or falling off due to external force.

[0080] In combination with Figure 4 , Figure 5 and Figure 8As shown, the positioning groove 111 includes a first positioning groove 1110 and a second positioning groove 1111, and the top corner formed between the first frame 11 and the fourth frame 14 is provided with the first positioning groove 1110 matched with the first positive electrode positioning block 210 and the first negative electrode positioning block 220, and the top corner formed between the third frame 13 and the second frame 12 is provided with the second positioning groove 1111 matched with the second positive electrode positioning block 211 and the second negative electrode positioning block 221, and the first positive electrode positioning block 210 and the first negative electrode positioning block 220 are alternately used between the first positive electrode positioning block 210 and the first negative electrode positioning block 220, and the first positive electrode positioning block 210 is inserted into the first positioning groove 1110, the second positive electrode positioning block 211 is inserted into the second positioning groove 1111, the first positive electrode positioning block 210 and the second positive electrode positioning block 211 are used for positioning the length direction and the width direction of the positive electrode unit sheet 6, then the first positive electrode positioning block 210 and the second positive electrode positioning block 211 are removed, the first negative electrode positioning block 220 is inserted into the first positioning groove 1110, the second negative electrode positioning block 221 is inserted into the second positioning groove 1111, and the first negative electrode positioning block 220 and the second negative electrode positioning block 221 are used for positioning the length direction and the width direction of the negative electrode unit sheet 6.

[0081] Optionally, continuing to refer to Figure 4 and Figure 5 As shown, the material of the first positive electrode positioning block 210, the second positive electrode positioning block 211, the first negative electrode positioning block 220 and the second negative electrode positioning block 221 can be metal (such as aluminum) or plastic (such as polyformaldehyde or polyether ether ketone), the aluminum has a high specific surface area and a low density, can increase the load of the active material, and improve the performance and energy density of the lithium ion battery. The polyformaldehyde has good mechanical strength, rigidity and wear resistance, and is helpful to improve the durability and stability of the positioning block. The polyether ether ketone has high strength, high temperature resistance, chemical corrosion resistance, wear resistance, self-lubrication and other excellent properties, can improve the positioning accuracy and stability of the positive electrode group positioning block 21 and the negative electrode group positioning block 22, and prolong the service life.

[0082] In an optional embodiment, continuing to refer to Figure 2 , Figure 3 , Figures 9-11 As shown, Figure 9 is a structure schematic view of a buffer sheet unit provided by the utility model; Figure 10 is a structure schematic view of a negative electrode sheet unit provided by the utility model; Figure 11It is the structure diagram of the positive sheet unit provided by the utility model, the unit sheet 6 includes the buffer sheet unit 63, the negative sheet unit 62 and the positive sheet unit 61 in the embodiment, the number of the positive sheet unit 61 is greater than the number of the negative sheet unit 62, the negative sheet unit 62 is located between the adjacent two positive sheet units 61, and the buffer sheet unit 63 is located on the side of the positive sheet unit 61 away from the negative sheet unit 62.

[0083] With reference to Figure 2 As shown in the figure, the tool body 1 further comprises a bottom plate 15 connected with the first frame 11 and the second frame 12, the bottom plate 15 is used for bearing the unit sheet 6, the tool body 1 further comprises the bottom plate 15, four edges of the bottom plate 15 are sequentially provided with the first frame 11, the third frame 13, the second frame 12 and the fourth frame 14, the first frame 11, the third frame 13, the second frame 12, the fourth frame 14 and the bottom plate 15 surround to form a cavity 16, the bottom plate 15 is used for bearing the battery cell structure, the first frame 11, the third frame 13, the second frame 12 and the fourth frame 14 limit each edge of the battery cell structure respectively, preventing it from moving during the lamination process.

[0084] As Figure 3 Shown, the unit sheet 6 includes the buffer sheet unit 63, the negative sheet unit 62 and the positive sheet unit 61, the number of the positive sheet unit 61 is greater than the number of the negative sheet unit 62, the negative sheet unit 62 is located between the adjacent two positive sheet units 61, and the buffer sheet unit 63 can be laid on the side of the positive sheet unit 61 away from the negative sheet unit 62.

[0085] The above-mentioned positive sheet unit 61 and negative sheet unit 62 can be conventional structures, such as the positive sheet unit 61 comprising a positive current collector and a positive material layer, the negative sheet unit 62 comprising a negative current collector, a negative material layer and a solid-state electrolyte layer, and the buffer sheet unit 63 can be a plastic film, cloth or paper material, having a buffering effect, easy to process, and playing a buffering protection role on the positive sheet unit 61 and the negative sheet unit 62 during the lamination process.

[0086] The above-mentioned scheme not only improves the production efficiency, but also optimizes the battery cell structure,

[0087] In an alternative embodiment, the size of the buffer sheet unit 63 is a, the size of the negative sheet unit 62 is b, and the size of the positive sheet unit 61 is c, wherein a is greater than b, and b is greater than c.

[0088] Specifically, with reference to Figure 3As shown, the size of the buffer sheet unit 63 is a, and the size of the buffer sheet unit 63 can be matched with the size of the cavity 16, the size of the buffer sheet unit 63 is the largest, the size of the negative sheet unit 62 is the second, and the size of the positive sheet unit 61 is the smallest. Not only can it prevent the battery structure from being damaged under vibration or impact, but it can also more effectively disperse and heat heat, help maintain the temperature balance inside the battery, and at the same time increase the contact area between the negative sheet unit 62 and the positive sheet unit 61, thereby improving the efficiency and rate of electrochemical reaction. In addition, it ensures that lithium has enough space to be embedded in the negative electrode during charging to avoid lithium precipitation, thereby maintaining the performance and cycle life of the lithium battery.

[0089] In an alternative embodiment, a pressing groove 110 is formed on the first frame 11, the pressing groove 110 is recessed downward along the thickness direction of the first frame 11, and the pressing piece 3 is located in the pressing groove 110.

[0090] Specifically, continuing to refer to Figure 6 As shown, the pressing groove 110 is formed on the first frame 11, the pressing groove 110 is recessed downward along the thickness direction of the first frame 11, and the pressing groove 110 is in communication with the cavity 16, so that the cross-sectional shape of the first frame 11 along its thickness direction is approximately concave. The pressing piece 3 is threadedly connected to the first frame 11 corresponding to the pressing groove 110, and through the pressing groove 110, the pressing piece 3 can not only be fixed, but also be beneficial to save space of the first frame 11, and at the same time, it is beneficial to reduce the weight of the first frame 11.

[0091] Preferably, the pressing groove 110 can be located in the middle of the first frame 11, which is beneficial to fix the battery structure from the center of the battery structure subsequently to avoid the battery structure moving.

[0092] The above-mentioned material taking port 120 can be located in the middle of the second frame 12, which can be fixed from the middle of the battery structure. After the battery structure is fixed by the fixing piece 4, the battery structure is avoided to move.

[0093] Optionally, along the side of the second frame 12 pointing to the first frame 11, the orthographic projection of the material taking port 120 coincides with the orthographic projection of the pressing groove 110, which more effectively avoids the movement of the battery structure.

[0094] Optionally, continuing to refer to Figure 1 As shown, the bottom of the tool body 1 is provided with a foot pad 5.

[0095] The above-mentioned foot pad 5 can be an adjustable foot pad 5, and studs are equipped on the foot pad 5 to facilitate the adjustment of the height of the tool body 1, which not only helps to ensure the levelness of the tool body 1, but also can adapt to different operating environments and requirements, and at the same time, by adjusting the height of the foot pad 5, the tool body 1 can be lifted, thereby providing greater convenience for the taking and placing operation of the battery cell structure, and further helping to improve the production efficiency and reduce the operation difficulty.

[0096] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, but not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A lamination tool for solid state batteries, characterized by, The tooling body has a cavity accommodating an electric core structure, the electric core structure at least comprising unit sheets with different polarities; The diagonal of the tooling body is provided with a positioning member, the positioning member comprising positive group positioning blocks and negative group positioning blocks alternately arranged, the positive group positioning blocks and the negative group positioning blocks being used for positioning the unit sheets with different polarities respectively; The tooling body comprises oppositely arranged first and second side frames, wherein the first side frame is provided with a pressing member, the pressing member comprising a first pressing block, when the length extension direction of the first pressing block is parallel to the length extension direction of the first side frame, the first pressing block is not in contact with the unit sheets, when the length extension direction of the first pressing block intersects with the length extension direction of the first side frame, the first pressing block is used for pressing the unit sheets; the second side frame has a material taking opening communicating with the cavity, and a fixing member is located at the material taking opening, the fixing member being used for fixing the stacked electric core structure.

2. The solid state battery lamination tool of claim 1, wherein, The pressing member further comprises a guide column, an outer surface of the guide column is sleeved with an elastic member, the guide column is connected with the first side frame through the first pressing block, and the first pressing block rotates around the guide column.

3. The solid state battery lamination tool of claim 1, wherein, The fixing member comprises a fixing clamp seat and a base connected with the fixing clamp seat; The fixing clamp seat is provided with a rotating member and a second pressing block connected with the rotating member on the side away from the base, the second pressing block is located on the side of the rotating member close to the base, the rotating member drives the second pressing block to reciprocate along the thickness direction of the second side frame, and the second pressing block is used for pressing the stacked electric core structure.

4. The solid state battery lamination tool of claim 3, wherein, The fixing clamp seat comprises a top plate and a side plate connected with the top plate, the side plate is located on the side of the top plate close to the base, and the side plate is connected with the base, a reverse L-shaped structure is formed between the top plate and the side plate, and the opening of the reverse L-shaped structure faces the unit sheets; The rotating member comprises a rotating bolt, the rotating bolt passes through the top plate and is connected with the second pressing block.

5. The solid state battery lamination tool of claim 1, wherein, The tooling body further comprises oppositely arranged third and fourth side frames connected with the first and second side frames respectively; The top angles formed between the third side frame and the second side frame and between the first side frame and the fourth side frame are provided with positioning grooves matched with the positive group positioning blocks and the negative group positioning blocks, and the positive group positioning blocks and the negative group positioning blocks are alternately inserted into the positioning grooves.

6. The unit sheet tooling of the solid-state battery according to claim 5, wherein The positive group positioning blocks comprise first and second positive positioning blocks, the first and second positive positioning blocks each comprise a first horizontal block and a first vertical block connected with the first horizontal block, a first L-shaped structure is formed between the first horizontal block and the first vertical block, and the openings of the first L-shaped structures in the first and second positive positioning blocks both face the unit sheets. The negative group positioning block comprises a first negative positioning block and a second negative positioning block, the first negative positioning block and the second negative positioning block each comprise a second horizontal block and a second vertical block connected with the second horizontal block, a second L-shaped structure is formed between the second horizontal block and the second vertical block, and the opening of the second L-shaped structure in the first negative positioning block and the opening of the second L-shaped structure in the second negative positioning block are both towards the unit sheet.

7. The solid state battery lamination tool of claim 1, wherein, The unit sheet comprises a buffer sheet unit, a negative sheet unit and a positive sheet unit, the number of the positive sheet units is greater than the number of the negative sheet units, the negative sheet unit is located between two adjacent positive sheet units, and the buffer sheet unit is located on the side of the positive sheet unit away from the negative sheet unit.

8. The solid state battery lamination tool of claim 7, wherein, The size of the buffer sheet unit is a, the size of the negative sheet unit is b, and the size of the positive sheet unit is c, wherein a is greater than b, and b is greater than c.

9. The solid state battery lamination tool of claim 1, wherein, The first frame is provided with a pressing groove, the pressing groove is recessed downward along the thickness direction of the first frame, and the pressing piece is located in the pressing groove.

10. The solid state battery lamination tool of claim 1, wherein, The bottom of the tool main body is provided with a foot pad.

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