Solid-state battery stack device
By designing the feeding, compounding, and stacking mechanisms, the problem of electrode unit stacking in membrane-free solid-state batteries has been solved, achieving stable and efficient electrode assembly production, which is suitable for the preparation of membrane-free batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TALENT NEW ENERGY CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-07-14
Smart Images
Figure CN224501966U_ABST
Abstract
Description
Technical Field
[0001] This disclosure generally relates to the field of battery technology, and more particularly to a solid-state battery stacking device. Background Technology
[0002] Solid-state batteries use solid electrolytes with good ionic conductivity and mechanical strength. Solid electrolytes can effectively isolate the positive and negative electrodes, thus eliminating the need for a separator. To improve the stability of the positive and negative electrode stacks after eliminating the separator, a binder is usually coated on the electrodes. The binder is not sticky at room temperature but becomes sticky when heated. Therefore, a hot-pressing composite method can be used to heat-press the positive and negative electrodes into electrode units.
[0003] Existing stacking machines are designed for electrode units with separators and use a Z-shaped stacking method for stacking. They cannot be applied to the stacking of solid-state batteries without separators. Utility Model Content
[0004] This invention provides a solid-state battery stacking device that can stack composite membrane-free electrode units to produce membrane-free solid-state batteries.
[0005] This utility model provides a solid-state battery stacking device, including a feeding mechanism, a first composite mechanism and a stacking mechanism arranged in sequence. The feeding mechanism includes a first feeding group and a second feeding group, and the first composite mechanism includes a first composite group corresponding to the first feeding group.
[0006] The first feeding group includes at least two first electrode strip unwinding parts and at least one second electrode strip unwinding part. The number of first electrode strip unwinding parts is greater than the number of second electrode strip unwinding parts. The first electrode strip unwinding parts are used to provide first electrode strips, and the second electrode strip unwinding parts are used to provide second electrode strips. The first electrode strips and the second electrode strips have opposite electrical properties. The first composite group is used to laminate at least two first electrode strips and at least one second electrode strip to form a first composite strip.
[0007] The second feeding group includes at least one third electrode strip unwinding member, which is used to provide a third electrode strip, the third electrode strip having the same electrical properties as the second electrode strip;
[0008] A first cutting component is provided between the first composite mechanism and the stacking mechanism, and the first cutting component is used to cut the first composite strip into a plurality of first electrode units; a second cutting component is provided between the second feeding group and the stacking mechanism, and the second cutting component is used to cut the third electrode strip into at least a plurality of third electrode pieces.
[0009] The stacking mechanism includes a first transfer member and a stacking stage. The first transfer member is used to transfer a predetermined number of the first electrode units and the third electrode pieces and stack them alternately on the stacking stage to form an electrode group.
[0010] As an implementation, the second feeding group includes at least two of the third electrode strip unwinding members and at least one fourth electrode strip unwinding member, the fourth electrode strip unwinding member being used to provide a fourth electrode strip, the fourth electrode strip having the same electrical properties as the first electrode strip.
[0011] The first composite mechanism further includes a second composite group corresponding to the second feeding group, the second composite group being used to laminate at least two of the third electrode strips and at least one of the fourth electrode strips to form a second composite strip;
[0012] The second cutting component is used to cut the second composite strip into multiple second electrode units, and the first transfer component is used to transfer a predetermined number of the first electrode units and the second electrode units and stack them alternately on the stacking table to form an electrode group.
[0013] As an alternative implementation, a first short-circuit tester and a second short-circuit tester are also included, wherein the first short-circuit tester and the second short-circuit tester are respectively used to test whether the first electrode unit and the second electrode unit are short-circuited before being transferred to the stacking stage.
[0014] As an implementation method, the first composite assembly includes a first hot pressing assembly, and a first feed laminating roller and a first discharge laminating roller respectively disposed on both sides of the first hot pressing assembly;
[0015] The first feed laminating roller includes a first feed dividing roller and a second feed dividing roller arranged opposite to each other;
[0016] The first discharge layer roller includes a first discharge sub-roller and a second discharge sub-roller arranged opposite to each other.
[0017] As an implementation method, the first feed roller, the second feed roller, the first discharge roller, and the second discharge roller are all heated rollers.
[0018] As an alternative implementation, the first composite assembly further includes a first clamping assembly for clamping the first composite strip at a position from the first feed laminating roller to the first discharge laminating roller.
[0019] As an implementation method, the first clamping assembly includes a first unwinding member and a first winding member respectively disposed on both sides of the first hot pressing assembly, and a first clamping member wound around the first unwinding member and the first winding member.
[0020] The first unwinding member includes a first unwinding portion and a second unwinding portion disposed opposite to each other; the first winding member includes a first winding portion and a second winding portion disposed opposite to each other; and the first clamping member includes a first upper clamping portion and a first lower clamping portion.
[0021] The first upper clamping part passes sequentially around the first unwinding part, the first feed roller, the first hot pressing assembly, the first discharge roller, and the first winding part; the first lower clamping part passes sequentially around the second unwinding part, the second feed roller, the first hot pressing assembly, the second discharge roller, and the second winding part.
[0022] As an implementation method, the second composite assembly includes a second hot pressing assembly, and a second feed laminating roller and a second discharge laminating roller respectively disposed on both sides of the second hot pressing assembly;
[0023] The second feed laminating roller includes a third feed roller and a fourth feed roller arranged opposite to each other;
[0024] The second discharge layer roller includes a third discharge sub-roller and a fourth discharge sub-roller arranged opposite to each other.
[0025] As an alternative implementation, a second composite mechanism is also included, which includes a third hot-pressing assembly for connecting a plurality of first electrode units and a plurality of third electrode monoliths to form an electrode group.
[0026] As an alternative implementation, the second composite mechanism includes a third short-circuit tester for testing whether the pole group is short-circuited.
[0027] The above scheme provides a first electrode strip and a second electrode strip through a first feeding group, and a third electrode strip through a second feeding group. A first composite mechanism laminates the first electrode strip and the second electrode strip to form a first composite strip. A first cutting assembly cuts the first composite strip into multiple first electrode units, and a second cutting assembly cuts the third electrode strip into multiple third electrode pieces. A first transfer component transfers a predetermined number of first electrode units and third electrode pieces to a stacking stage, where they are sequentially and alternately stacked to form electrode groups. This achieves the stacking of separator-free electrode groups, facilitating the production of separator-free batteries. Attached Figure Description
[0028] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0029] Figure 1 This is a schematic diagram of the overall structure of the solid-state battery stacking device according to an embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the structure of the first electrode unit fabricated by the solid-state battery stacking apparatus according to an embodiment of this application;
[0031] Figure 3 This is a schematic diagram of the structure for fabricating the second electrode unit in the solid-state battery stacking apparatus of this application embodiment;
[0032] Figure 4 This is a schematic diagram of two stacking methods for a solid-state battery stacking device according to an embodiment of this application.
[0033] Explanation of reference numerals in the attached figures:
[0034] Stacking device 100
[0035] First feeding assembly 10, first electrode strip unwinding component 11, second electrode strip unwinding component 12, first cutting assembly 13, first die-cutting assembly 14, second die-cutting assembly 15.
[0036] Second feeding unit 20, third electrode strip unwinding unit 21, fourth electrode strip unwinding unit 22, second cutting assembly 23, third die-cutting assembly 24, fourth die-cutting assembly 25.
[0037] First composite group 30
[0038] First hot-pressing component 31
[0039] First feed laminating roller 32, first feed dividing roller 321, second feed dividing roller 322
[0040] First discharge layer roller 33, first discharge dividing roller 331, second discharge dividing roller 332
[0041] First clamping assembly 34, first unwinding member 341, first unwinding section 341a, second unwinding section 341b, first rewinding member 342, first rewinding section 342a, second rewinding section 342b, first clamping member 343, first upper clamping section 343a, first lower clamping section 343b.
[0042] Third cutting component 35, first short-circuit test piece 36
[0043] Second compound group 40
[0044] Second hot-pressing component 41
[0045] Second feed laminating roller 42, third feed dividing roller 421, fourth feed dividing roller 422
[0046] Second discharge layer pressure roller 43, third discharge dividing roller 431, fourth discharge dividing roller 432
[0047] Second clamping assembly 44, second unwinding member 441, third unwinding section 441a, fourth unwinding section 441b, second rewinding member 442, third rewinding section 442a, fourth rewinding section 442b, second clamping member 443, second upper clamping section 443a, second lower clamping section 443b.
[0048] Fourth cutting component 45, second short-circuit test piece 46
[0049] Stacking mechanism 50, stacking table 51,
[0050] The second composite mechanism 70, the third hot-pressing assembly 71, the support part 711, the pressing part 712, and the third short-circuit test piece 72.
[0051] First electrode strip 201, second electrode strip 202, third electrode strip 203, fourth electrode strip 204
[0052] First composite strip 301, second composite strip 302
[0053] First electrode unit 401, second electrode unit 402, electrode group 403, and third electrode single piece 404. Detailed Implementation
[0054] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.
[0055] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0056] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” as used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0057] like Figure 1 and Figure 4 As shown, the solid-state battery stacking device 100 provided in this embodiment of the present invention includes a feeding mechanism, a first composite mechanism and a stacking mechanism 50 arranged in sequence. The feeding mechanism provides a strip for composite, the first composite mechanism composites the strip to form a composite strip, and the stacking mechanism 50 is used for stacking.
[0058] The feeding mechanism includes a first feeding group 10 and a second feeding group 20. The first compounding mechanism includes a first compounding group 30 corresponding to the first feeding group 10, so that the first compounding group 30 can compound the strip provided by the first feeding group 10.
[0059] The first feeding group 10 includes at least two first electrode strip unwinding parts 11 and at least one second electrode strip unwinding part 12, wherein the number of first electrode strip unwinding parts 11 is greater than the number of second electrode strip unwinding parts 12.
[0060] Specifically, the first electrode strip unwinding member 11 can be two, three, five, etc., and the second electrode strip unwinding member 12 can be one, two, three, etc. Among them, when there are two first electrode strip unwinding members 11, there are three second electrode strip unwinding members 12.
[0061] It is understandable that the first electrode strip 201 and the second electrode strip 202 are staggered during processing. Therefore, there is one more first electrode strip 201 than second electrode strip 202.
[0062] The first electrode strip unwinding member 11 is used to provide the first electrode strip 201, and the second electrode strip unwinding member 12 is used to provide the second electrode strip 202. That is, the first electrode strip 201 is wound on the first electrode strip unwinding member 11, and the second electrode strip 202 is wound on the second electrode strip unwinding member 12.
[0063] The first electrode strip 201 and the second electrode strip 202 have opposite electrical properties. For example, the first electrode strip 201 is a positive electrode strip, and the second electrode strip 202 is a negative electrode strip, or the first electrode strip 201 is a negative electrode strip, and the second electrode strip 202 is a positive electrode strip.
[0064] The first composite group 30 is used to laminate at least two first electrode strips 201 and at least one second electrode strip 202 to form a first composite strip 301;
[0065] For example, when there are two first electrode strips 201 and one second electrode strip 202, the first electrode strip 201 and the second electrode strip 202 in the first composite strip 301 are arranged in a stacked manner: first electrode strip 201, second electrode strip 202 and first electrode strip 201.
[0066] The second feeding group 20 includes at least one third electrode strip unwinding member 21, which is used to provide a third electrode strip 203, which has the same electrical properties as the second electrode strip 202.
[0067] Specifically, the second feeding group 20 may include a third electrode strip unwinding member 21, and may also include other electrode strip unwinding members; for example, it may also include a fourth electrode strip unwinding member 22. The third electrode strip unwinding member 21 is used to provide a third electrode strip 203 with the same electrical properties as the second electrode strip 202. For example, when the second electrode strip 202 is a positive electrode strip, the third electrode strip 203 is a positive electrode strip; when the second electrode strip 202 is a negative electrode strip, the third electrode strip 203 is a negative electrode strip.
[0068] Among them, a first cutting component 13 is provided between the first composite mechanism and the stacking mechanism 50. The first cutting component 13 is used to cut the first composite strip 301 into multiple first electrode units 401.
[0069] The first cutting component 13 cuts the first composite strip 301 into a plurality of first electrode units 401, wherein each first electrode unit 401 includes at least two first electrode pieces and at least one second electrode piece stacked together.
[0070] A second cutting assembly 23 is provided between the second feeding group 20 and the stacking mechanism 50. The second cutting assembly 23 is used to cut the third electrode strip 203 into at least a plurality of third electrode pieces 404 so as to connect the third electrode pieces 404 to the first electrode unit 401.
[0071] The stacking mechanism 50 includes a first transfer member and a stacking stage 51. The first transfer member is used to transfer a predetermined number of first electrode units 401 and third electrode single pieces 404 and stack them alternately on the stacking stage 51 to form an electrode group 403.
[0072] The stacking stage 51 provides support for the stacking. The first transfer component transfers the first electrode unit 401, cut by the first cutting component 13, and the third electrode single piece 404, cut by the second cutting component 23, to the stacking stage 51, where they are sequentially and alternately stacked along the thickness direction of the first electrode unit 401 to form an electrode group 403. Since each first electrode unit 401 has been composited, the structure of the first electrode unit 401 is stable.
[0073] The above scheme, such as Figure 1 and Figure 4As shown, a first electrode strip 201 and a second electrode strip 202 are provided by a first feeding group 10, and a third electrode strip 203 is provided by a second feeding group 20. The first electrode strip 201 and the second electrode strip 202 are laminated by a first composite mechanism to form a first composite strip 301. The first composite strip 301 is cut into multiple first electrode units 401 by a first cutting assembly 13, and the third electrode strip 203 is cut into multiple third electrode sheets 404 by a second cutting assembly 23. A predetermined number of first electrode units 401 and third electrode sheets 404 are transferred to a stacking stage 51 by a first transfer member, and then stacked sequentially and alternately on the stacking stage 51 to form an electrode group 403. This achieves the stacking of a separatorless electrode group 403, facilitating the production of separatorless batteries.
[0074] In some embodiments, the first electrode strip unwinding member 11, the second electrode strip unwinding member 12, and the third electrode strip unwinding member 21 may all be unwinding rollers, etc.
[0075] The first cutting component 13 and the second cutting component 23 may have the same structure or different structures. For example, both the first cutting component 13 and the second cutting component 23 may include a cutting base and a cutting element. The cutting element may be a cutting blade or the like. The cutting blade may be movably connected to the cutting base. For example, it may move horizontally or vertically to perform cutting.
[0076] The first transfer component can be a transfer robot, or a movable component movably connected to the stacking mechanism 50. The first transfer component can grip, grasp, or pick up the first electrode unit 401 and the third electrode single piece 404, and then transfer the first electrode unit 401 and the third electrode single piece 404. The first transfer component may include one or more transfer parts.
[0077] As a possible approach, such as Figure 1 As shown, the second feeding group 20 includes at least two third electrode strip unwinding members 21 and at least one fourth electrode strip unwinding member 22. The fourth electrode strip unwinding member 22 is used to provide a fourth electrode strip 204 material, which has the same electrical properties as the first electrode strip 201.
[0078] Specifically, the fourth electrode strip unwinding member 22 can be one, two, three, five, etc., and the third electrode strip unwinding member 21 can be two, three, four, six, etc. When there is one fourth electrode strip unwinding member 22, there are two third electrode strip unwinding members 21. The fourth electrode strip unwinding member 22 is used to provide the fourth electrode strip 204 material; that is, the fourth electrode strip 204 material is wound on the fourth electrode strip unwinding member 22.
[0079] It is understandable that the third electrode strip 203 and the fourth electrode strip 204 are staggered during processing, therefore, there is one more third electrode strip 203 than fourth electrode strip 204.
[0080] The first composite mechanism also includes a second composite group 40 corresponding to the second feeding group 20. The second composite group 40 is used to laminate at least two third electrode strips 203 and at least one fourth electrode strip 204 to form a second composite strip 302.
[0081] For example, when there are two third electrode strips 203 and one fourth electrode strip 204, the fourth electrode strip 204 and the third electrode strip 203 in the second composite strip 302 are arranged in a stacked manner, with the third electrode strip 203, the fourth electrode strip 204 and the third electrode strip 203 stacked sequentially.
[0082] The second cutting component 23 is used to cut the second composite strip 302 into a plurality of second electrode units 402, and the first transfer component is used to transfer a predetermined number of first electrode units 401 and second electrode units 402 and stack them alternately on the stacking table 51 to form an electrode group 403.
[0083] As a possible approach, such as Figures 1-3 As shown, the solid-state battery stacking device 100 also includes a first short-circuit tester 36 and a second short-circuit tester 46. The first short-circuit tester 36 and the second short-circuit tester 46 are used to test whether the first electrode unit 401 and the second electrode unit 402 are short-circuited before being transferred to the stacking stage 51.
[0084] Each first electrode unit 401 is tested by the first short-circuit tester 36 to determine whether the first electrode unit 401 is short-circuited. If the first electrode unit 401 is not short-circuited, it can be transferred to the stacking stage 51 by the first transfer member. If the first electrode unit 401 is short-circuited, the first electrode unit 401 can be rejected to avoid material waste caused by rejection after the electrode group is formed.
[0085] Similarly, the second short-circuit test piece 46 tests each second electrode unit 402 to determine whether the second electrode unit 402 is short-circuited. If the second electrode unit 402 is not short-circuited, it can be transferred to the stacking stage 51 by the first transfer piece. If the second electrode unit 402 is short-circuited, the second electrode unit 402 can be rejected to avoid material waste caused by rejection after the electrode group is formed.
[0086] In some embodiments, the first short-circuit test piece 36 may be disposed between the first cutting assembly 13 and the stacking mechanism 50 to facilitate short-circuit testing of the first electrode unit 401 obtained by the first cutting assembly 13. Similarly, the second short-circuit test piece 46 may be disposed between the second cutting assembly 23 and the stacking mechanism 50.
[0087] As a possible approach, such as Figure 1 and Figure 2 As shown, the first composite group 30 includes a first hot pressing assembly 31, and a first feeding laminating roller 32 and a first discharging laminating roller 33 respectively disposed on both sides of the first hot pressing assembly 31; the first feeding laminating roller 32 includes a first feeding sub-roller 321 and a second feeding sub-roller 322 disposed opposite to each other; the first discharging laminating roller 33 includes a first discharging sub-roller 331 and a second discharging sub-roller 332 disposed opposite to each other.
[0088] The first electrode strip 201 and the second electrode strip 202 are hot-pressed together by the first hot-pressing assembly 31. Specifically, since there is no separator in the membraneless solid-state battery, the positive and negative electrode sheets are coated with adhesive. The adhesive is not sticky at room temperature but becomes sticky when heated. Therefore, the first hot-pressing assembly 31 can make the adhesive on the first electrode strip 201 and the second electrode strip 202 sticky, thereby connecting the two and improving the stability of the first electrode unit 401.
[0089] Similarly, the second composite assembly 40 may also include a second hot pressing assembly 41, and a second feed laminating roller 42 and a second discharge laminating roller 43 respectively disposed on both sides of the second hot pressing assembly 41; the second feed laminating roller 42 includes a third feed dividing roller 421 and a fourth feed dividing roller 422 disposed opposite to each other; the second discharge laminating roller 43 includes a third discharge dividing roller 431 and a fourth discharge dividing roller 432 disposed opposite to each other.
[0090] In some embodiments, the first hot-pressing assembly 31 includes a first heating element and a first pressing element. The first heating element makes the adhesive viscous, and the first pressing element provides bonding pressure to the first electrode strip 201 and the second electrode strip 202. The first heating element may be a heating furnace.
[0091] Similarly, such as Figure 1 and Figure 3 As shown, the second hot-pressing assembly 41 includes a second heating element and a second pressing element.
[0092] The first feed roller 321 and the second feed roller 322 are used to laminate the first electrode strip 201 and the second electrode strip 202 passing through them. Preferably, the distance between the first feed roller 321 and the second feed roller 322 is adjustable. For example, the position of the first feed roller 321 is adjustable, and / or the position of the second feed roller 322 is adjustable to accommodate different amounts of the first electrode strip 201 and the second electrode strip 202.
[0093] The third feed roller 421 and the fourth feed roller 422 can have the same structure as the first feed roller 321 and the second feed roller 322.
[0094] The first discharge roller 331 and the second discharge roller 332 are used to laminate the first composite strip 301 passing through them. Preferably, the distance between the first discharge roller 331 and the second discharge roller 332 is adjustable. For example, the position of the first discharge roller 331 is adjustable, and / or the position of the second discharge roller 332 is adjustable, so as to accommodate the first composite strip 301 of different thicknesses.
[0095] The third discharge roller 431 and the fourth discharge roller 432 can have the same structure as the first discharge roller 331 and the second discharge roller 332.
[0096] As an implementation method, the first feed roller 321, the second feed roller 322, the first discharge roller 331, and the second discharge roller 332 are all heated rollers.
[0097] By configuring the first feed roller 321 and the second feed roller 322 as heating rollers, the first electrode strip 201 and the second electrode strip 202 can be preheated when passing through the feed laminating roller, making the adhesive viscous. This accelerates the hot pressing rate in the first hot pressing assembly 31 and improves production efficiency. Configuring the first discharge roller 331 and the second discharge roller 332 as heating rollers further stabilizes the laminated first composite strip 301, improving the reliability of the connection.
[0098] It is understood that the first feed roller 321, the second feed roller 322, the first discharge roller 331, and the second discharge roller 332 can be heat-conducting components and connected to a heating structure; or the first feed roller 321, the second feed roller 322, the first discharge roller 331, and the second discharge roller 332 can be heating components.
[0099] Of course, this application is not limited to this. In other embodiments, one of the first feed roller 321 and the second feed roller 322 may be a heating roller; one of the first discharge roller 331 and the second discharge roller 332 may be a heating roller.
[0100] Similarly, the third feed roller 421, the fourth feed roller 422, the third discharge roller 431, and the fourth discharge roller 432 are all heated rollers.
[0101] As a possible approach, such as Figure 1 and Figure 2 As shown, the first composite assembly 30 also includes a first clamping assembly 34, which is used to clamp the first composite strip 301 at the positions from the first feed laminating roller 32 to the first discharge laminating roller 33.
[0102] By using a first clamping assembly 34 positioned between the first feed laminating roller 32 and the first discharge laminating roller 33 to clamp the first composite strip 301, the first electrode strip 201 and the second electrode strip 202 can smoothly enter and exit the first composite assembly 30.
[0103] It is understood that the first clamping assembly 34 may include a first upper clamping member and a first lower clamping member, wherein the first upper clamping member and the first lower clamping member may be a film clamping member, a clamping plate, a clamping sheet, etc. For example, the first upper clamping member and the first lower clamping member may be a PET film.
[0104] Similarly, such as Figure 1 and Figure 3 As shown, the second composite assembly 40 also includes a second clamping assembly 44, which is used to clamp the second composite strip 302 at positions from the second feed laminating roller 42 to the second discharge laminating roller 43. The second clamping assembly 44 may include a second upper clamping member and a second lower clamping member, which can be a film clamping member, a clamping plate, a clamping sheet, etc. For example, the second upper clamping member and the second lower clamping member can be PET film.
[0105] As a possible approach, such as Figure 1 and Figure 2 As shown, the first clamping assembly 34 includes a first unwinding member 341 and a first winding member 342 respectively disposed on both sides of the first hot pressing assembly 31, and a first clamping member 343 wound around the first unwinding member 341 and the first winding member 342; the first unwinding member 341 includes a first unwinding portion 341a and a second unwinding portion 341b disposed opposite to each other, the first winding member 342 includes a first winding portion 342a and a second winding portion 342b disposed opposite to each other, and the first clamping member 343... 343 includes a first upper clamping part 343a and a first lower clamping part 343b; the first upper clamping part 343a passes sequentially around a first unwinding part 341a, a first feed roller 321, a first hot pressing assembly 31, a first discharge roller 331 and a first take-up part 342a; the first lower clamping part 343b passes sequentially around a second unwinding part 341b, a second feed roller 322, a first hot pressing assembly 31, a second discharge roller 332 and a second take-up part 342b.
[0106] Specifically, by winding the first clamping member 343 around the first unwinding member 341 and the first winding member 342, the first clamping member 343 can form a sandwich between the first winding member 342 and the first unwinding member 341, so as to clamp the first electrode strip 201 and the second electrode strip 202.
[0107] The first unwinding section 341a and the second unwinding section 341b can be spaced apart vertically or horizontally. At least one of the first unwinding section 341a and the second unwinding section 341b can be movable, so that the distance between the first unwinding section 341a and the second unwinding section 341b can be adjusted according to the thickness of the first composite strip 301.
[0108] Similarly, the first winding section 342a and the second winding section 342b can be spaced apart vertically or horizontally. At least one of the first winding section 342a and the second winding section 342b can be movable, so that the distance between the first winding section 342a and the second winding section 342b can be adjusted according to the thickness of the first composite strip 301.
[0109] In some embodiments, the first clamping member 343 can be released from the first unwinding part 341a, wound around the first hot pressing assembly 31, wound into the first winding part 342a, and then wound back into the first unwinding part 341a to form a cycle.
[0110] The first upper clamping part 343a passes sequentially around the first unwinding part 341a, the first feed roller 321, the first hot pressing assembly 31, the first discharge roller 331, and the first winding part 342a; the first lower clamping part 343b passes sequentially around the second unwinding part 341b, the second feed roller 322, the first hot pressing assembly 31, the second discharge roller 332, and the second winding part 342b. In this way, the first electrode strip 201 and the second electrode strip 202 can be clamped by the first upper clamping part 343a and the first lower clamping part 343b, and both are located between the first upper clamping part 343a and the first lower clamping part 343b between the first feed laminating roller 32 and the first discharge laminating roller 33.
[0111] Similarly, such as Figure 1 and Figure 3As shown, the second clamping assembly 44 includes a second unwinding member 441 and a second winding member 442 respectively disposed on both sides of the second hot pressing assembly 41, and a second clamping member 443 wound around the second unwinding member 441 and the second winding member 442; the second unwinding member 441 includes a third unwinding portion 441a and a fourth unwinding portion 441b disposed opposite to each other, the second winding member 442 includes a third winding portion 442a and a fourth winding portion 442b disposed opposite to each other, and the second clamping member 443... 443 includes a second upper clamping part 443a and a second lower clamping part 443b; the second upper clamping part 443a passes sequentially around the third unwinding part 441a, the third feed roller 421, the second hot pressing assembly 41, the third discharge roller 431 and the third take-up part 442a; the second lower clamping part 443b passes sequentially around the fourth unwinding part 441b, the fourth feed roller 422, the second hot pressing assembly 41, the fourth discharge roller 432 and the fourth take-up part 442b.
[0112] In some embodiments, the solid-state battery stacking apparatus 100 further includes a first die-cutting assembly 14 for die-cutting a first electrode strip 201 to form a first tab; a second die-cutting assembly 15 for die-cutting a second electrode strip 202 to form a second tab; a third die-cutting assembly 24 for die-cutting a third electrode strip 203 to form a third tab; and a fourth die-cutting assembly 25 for die-cutting a fourth electrode strip 204 to form a fourth tab.
[0113] The third cutting component 35 is disposed before the first composite group 30 and is used to cut the first electrode strip 201 after die cutting to form the first electrode tab. The first electrode strip 201 is a positive electrode strip. The fourth cutting component 45 is disposed before the second composite group 40 and is used to cut the fourth electrode strip 204 after die cutting to form the fourth electrode tab. The fourth electrode strip 204 is a positive electrode strip.
[0114] As a possible approach, such as Figure 1 and Figure 4 As shown, the solid-state battery stacking device 100 also includes a second composite mechanism 70, which includes a third hot-pressing assembly 71. The third hot-pressing assembly 71 is used to connect a plurality of first electrode units 401 and a plurality of third electrode monoliths 404 to form an electrode group.
[0115] Multiple first electrode units 401 and multiple third electrode monoliths 404 are connected to form an electrode group through the third hot-pressing assembly 71.
[0116] In some embodiments, the third hot-pressing assembly 71 is used to connect a plurality of first electrode units 401 and a plurality of second electrode units 402 to form an electrode group.
[0117] In some embodiments, the third hot-pressing assembly 71 may include a support portion 711 and a pressing portion 712, at least one of the support portion 711 and the pressing portion 712 being a heating element. For example, the support portion 711 may be a heating element, or the pressing portion 712 may be a heating element; or both the support portion 711 and the pressing portion 712 may be heating elements.
[0118] As a possible approach, such as Figure 1 As shown, the second composite mechanism 70 includes a third short-circuit tester 72, which is used to test whether the pole group is short-circuited.
[0119] The electrode group is tested by the third short-circuit test piece 72 to determine whether the electrode group is short-circuited. If the electrode group is not short-circuited, it is transferred to the finished product area. If the electrode group is short-circuited, it can be transferred to the defective product area.
[0120] In some embodiments, the third short-circuit test piece 72 may be disposed after the third hot-pressing assembly 71 to facilitate short-circuit testing of the electrode assembly after the third hot-pressing.
[0121] In some embodiments, the solid-state battery stacking apparatus 100 further includes a second transfer member for transferring electrode groups to a finished product area or a defective product area.
[0122] It is understood that the solid-state battery stacking device 100 also includes a controller, which can be connected to the first short-circuit test piece 36, the second short-circuit test piece 46, the third short-circuit test piece 72, the first transfer piece, and the second transfer piece, so as to control the operation of the first transfer piece and the second transfer piece according to the test results of the first short-circuit test piece 36, the second short-circuit test piece 46, and the third short-circuit test piece 72.
[0123] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the foregoing disclosed concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A solid-state battery stacking device, characterized in that, It includes a feeding mechanism, a first composite mechanism and a stacking mechanism arranged in sequence. The feeding mechanism includes a first feeding group and a second feeding group. The first composite mechanism includes a first composite group corresponding to the first feeding group. The first feeding group includes at least two first electrode strip unwinding parts and at least one second electrode strip unwinding part. The number of first electrode strip unwinding parts is greater than the number of second electrode strip unwinding parts. The first electrode strip unwinding parts are used to provide first electrode strips, and the second electrode strip unwinding parts are used to provide second electrode strips. The first electrode strips and the second electrode strips have opposite electrical properties. The first composite group is used to laminate at least two first electrode strips and at least one second electrode strip to form a first composite strip. The second feeding group includes at least one third electrode strip unwinding member, which is used to provide a third electrode strip, the third electrode strip having the same electrical properties as the second electrode strip; A first cutting component is provided between the first composite mechanism and the stacking mechanism, and the first cutting component is used to cut the first composite strip into a plurality of first electrode units; a second cutting component is provided between the second feeding group and the stacking mechanism, and the second cutting component is used to cut the third electrode strip into at least a plurality of third electrode pieces. The stacking mechanism includes a first transfer member and a stacking stage. The first transfer member is used to transfer a predetermined number of the first electrode units and the third electrode pieces and stack them alternately on the stacking stage to form an electrode group.
2. The solid-state battery stacking device according to claim 1, characterized in that, The second feeding group includes at least two of the third electrode strip unwinding members and at least one fourth electrode strip unwinding member, the fourth electrode strip unwinding member being used to provide a fourth electrode strip, the fourth electrode strip having the same electrical properties as the first electrode strip; The first composite mechanism further includes a second composite group corresponding to the second feeding group, the second composite group being used to laminate at least two of the third electrode strips and at least one of the fourth electrode strips to form a second composite strip; The second cutting component is used to cut the second composite strip into multiple second electrode units, and the first transfer component is used to transfer a predetermined number of the first electrode units and the second electrode units and stack them alternately on the stacking table to form an electrode group.
3. The solid-state battery stacking device according to claim 2, characterized in that, It also includes a first short-circuit tester and a second short-circuit tester, which are used to test whether the first electrode unit and the second electrode unit are short-circuited before being transferred to the stacking stage.
4. The solid-state battery stacking device according to claim 2, characterized in that, The first composite assembly includes a first hot pressing assembly, and a first feed laminating roller and a first discharge laminating roller respectively disposed on both sides of the first hot pressing assembly; The first feed laminating roller includes a first feed dividing roller and a second feed dividing roller arranged opposite to each other; The first discharge layer roller includes a first discharge sub-roller and a second discharge sub-roller arranged opposite to each other.
5. The solid-state battery stacking device according to claim 4, characterized in that, The first feed roller, the second feed roller, the first discharge roller, and the second discharge roller are all heated rollers.
6. The solid-state battery stacking apparatus according to claim 4, characterized in that, The first composite assembly further includes a first clamping assembly for clamping the first composite strip at a position from the first feed laminating roller to the first discharge laminating roller.
7. The solid-state battery stacking apparatus according to claim 6, characterized in that, The first clamping assembly includes a first unwinding member and a first winding member respectively disposed on both sides of the first hot pressing assembly, and a first clamping member wound around the first unwinding member and the first winding member; The first unwinding member includes a first unwinding portion and a second unwinding portion disposed opposite to each other; the first winding member includes a first winding portion and a second winding portion disposed opposite to each other; and the first clamping member includes a first upper clamping portion and a first lower clamping portion. The first upper clamping part sequentially passes around the first unwinding part, the first feeding roller, the first hot pressing assembly, the first discharge roller and the first winding part; The first lower clamping part passes sequentially around the second unwinding part, the second feeding roller, the first hot pressing assembly, the second discharge roller, and the second winding part.
8. The solid-state battery stacking apparatus according to claim 4, characterized in that, The second composite assembly includes a second hot pressing assembly, and a second feed laminating roller and a second discharge laminating roller respectively disposed on both sides of the second hot pressing assembly; The second feed laminating roller includes a third feed roller and a fourth feed roller arranged opposite to each other; The second discharge layer roller includes a third discharge sub-roller and a fourth discharge sub-roller arranged opposite to each other.
9. The solid-state battery stacking apparatus according to claim 1, characterized in that, It also includes a second composite mechanism, which includes a third hot-pressing assembly for connecting a plurality of first electrode units and a plurality of third electrode monoliths to form an electrode group.
10. The solid-state battery stacking apparatus according to claim 9, characterized in that, The second composite mechanism includes a third short-circuit tester, which is used to test whether the pole group is short-circuited.