Solid-state battery stacking device
By designing the feeding, compounding, and stacking mechanisms, and combining hot pressing and short-circuit testing, the problem of stacking electrode units in membrane-less solid-state batteries was solved, achieving stable and efficient battery production.
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
- 2026-07-03
Smart Images
Figure CN224458157U_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 first feeding mechanism, a first composite mechanism, and a stacking mechanism arranged sequentially. The first feeding mechanism includes at least one first electrode strip unwinding member and at least one second electrode strip unwinding member. The first electrode strip unwinding member is used to provide a first electrode strip, and the second electrode strip unwinding member is used to provide a second electrode strip. The number of the first electrode strip unwinding members and the second electrode strip unwinding members is the same. The first composite mechanism is used to laminate at least one first electrode strip and at least one second electrode strip to form a composite strip. The first electrode strip and the second electrode strip have opposite electrical properties.
[0006] A first cutting component is provided between the first composite mechanism and the stacking mechanism. The first cutting component is used to cut the composite strip into multiple electrode units.
[0007] The stacking mechanism includes a first transfer member and a stacking table. The first transfer member is used to transfer a predetermined number of electrode units and stack them on the stacking table to form an electrode group.
[0008] As an alternative implementation, the solid-state battery stacking apparatus also includes a first short-circuit tester for testing whether the electrode units are short-circuited before being transferred to the stacking stage.
[0009] As an implementation method, the first composite mechanism includes a first hot pressing assembly, and a feed laminating roller and a discharge laminating roller respectively disposed on both sides of the first hot pressing assembly;
[0010] The feed laminating roller includes a first feed dividing roller and a second feed dividing roller arranged opposite to each other;
[0011] The discharge laminating roller includes a first discharge dividing roller and a second discharge dividing roller arranged opposite to each other.
[0012] 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.
[0013] As an alternative implementation, the first composite mechanism further includes a clamping assembly for clamping the composite strip at the position from the feed laminating roller to the discharge laminating roller.
[0014] As an implementation method, the clamping assembly includes an unwinding member and a winding member respectively disposed on both sides of the first hot pressing assembly, and a clamping member wound around the unwinding member and the winding member;
[0015] The unwinding component includes a first unwinding section and a second unwinding section arranged opposite to each other; the winding component includes a first winding section and a second winding section arranged opposite to each other; and the clamping component includes a first clamping component and a second clamping component.
[0016] The first clamping member passes sequentially around the first unwinding section, the first feed roller, the first hot pressing assembly, the first discharge roller, and the first winding section; the second clamping member passes sequentially around the second unwinding section, the second feed roller, the first hot pressing assembly, the second discharge roller, and the second winding section.
[0017] As a possible implementation method, the solid-state battery stacking device also includes:
[0018] A first die-cutting assembly is used to die-cut the first electrode strip to form a first electrode tab;
[0019] The second die-cutting assembly is used to die-cut the second electrode strip to form a second electrode tab;
[0020] The second cutting component is disposed in front of the first composite mechanism and is used to cut the second electrode strip after it has been die-cut to form the second electrode tab. The second electrode strip is a negative electrode strip and the first electrode strip is located under each second electrode strip.
[0021] As an implementation method, the solid-state battery stacking device further includes a second feeding mechanism, which includes a third electrode strip unwinding member for providing a third electrode strip, wherein the third electrode strip is a negative electrode strip;
[0022] A third cutting component is provided between the third electrode strip unwinding component and the stacking mechanism. The third cutting component is used to cut the third electrode strip into multiple third electrode sheets.
[0023] As an alternative implementation, the solid-state battery stacking device further includes a second composite mechanism, which includes a second hot-pressing assembly for connecting multiple electrode units and connecting them with the third electrode monolith to form an electrode group.
[0024] As an implementation, the second composite mechanism includes a second short-circuit tester for testing whether the pole group is short-circuited.
[0025] The above scheme provides a first electrode strip and a second electrode strip through a first feeding mechanism. A first composite mechanism laminates the first and second electrode strips to form a composite strip. A first cutting assembly cuts the composite strip into multiple electrode units, and a predetermined number of electrode units are transferred to a stacking table via a first transfer component. These units are then stacked on the stacking table to form an electrode assembly, achieving the stacking of separator-free electrode units and facilitating the production of separator-free batteries. Attached Figure Description
[0026] 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:
[0027] Figure 1 This is a partial schematic diagram of a solid-state battery stacking device according to an embodiment of this application;
[0028] Figure 2 This is a schematic diagram of two stacking methods for a solid-state battery stacking device according to an embodiment of this application;
[0029] Figure 3 This is an overall schematic diagram of the solid-state battery stacking device according to an embodiment of this application;
[0030] Figure 4 This is a schematic diagram of the first composite mechanism of the solid-state battery stacking device according to an embodiment of this application.
[0031] Explanation of reference numerals in the attached figures:
[0032] Stacking device 100
[0033] First feeding mechanism 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.
[0034] The components include: a first composite mechanism 20, a first hot pressing assembly 21, an infeed laminating roller 22, a first infeed dividing roller 221, a second infeed dividing roller 222, an outlet laminating roller 23, a first outlet dividing roller 231, a second outlet dividing roller 232, a clamping assembly 24, an unwinding component 241, a first unwinding section 241a, a second unwinding section 241b, a winding component 242, a first winding section 242a, a second winding section 242b, a clamping component 243, a first clamping component 243a, a second clamping component 243b, and a second cutting assembly 25.
[0035] Stacking mechanism 30, stacking table 31
[0036] First short-circuit test piece 50
[0037] Second feeding mechanism 60, third electrode strip unwinding component 61, third cutting assembly 62, third die-cutting assembly 63
[0038] The second composite mechanism 70, the second hot-pressing assembly 71, the support part 711, the pressing part 712, and the second short-circuit test piece 72 are all included.
[0039] First electrode strip 200, second electrode strip 300, composite strip 400, electrode unit 500, electrode group 600, third electrode single piece 700. Detailed Implementation
[0040] 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.
[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.
[0042] 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.
[0043] like Figure 1 and Figure 2 As shown, the solid-state battery stacking device 100 provided in this embodiment of the present invention includes a first feeding mechanism 10, a first composite mechanism 20 and a stacking mechanism 30 arranged in sequence.
[0044] The first feeding mechanism 10 includes at least one first electrode strip unwinding component 11 and at least one second electrode strip unwinding component 12, wherein the number of first electrode strip unwinding components 11 and second electrode strip unwinding components 12 is the same.
[0045] Specifically, there can be one or more first electrode strip unwinding members 11, and one or more second electrode strip unwinding members 12. Furthermore, when there is one first electrode strip unwinding member 11, there is also one second electrode strip unwinding member 12; when there are two or more first electrode strip unwinding members 11, there are also two or more second electrode strip unwinding members 12.
[0046] The first electrode strip unwinding member 11 is used to provide the first electrode strip 200, and the second electrode strip unwinding member 12 is used to provide the second electrode strip 300. That is, the first electrode strip 200 is wound on the first electrode strip unwinding member 11, and the second electrode strip 300 is wound on the second electrode strip unwinding member 12.
[0047] The first electrode strip 200 and the second electrode strip 300 have opposite electrical properties. For example, the first electrode strip 200 can be a positive electrode strip and the second electrode strip 300 can be a negative electrode strip.
[0048] The first composite mechanism 20 is used to laminate at least one first electrode strip 200 and at least one second electrode strip 300 to form a composite strip 400;
[0049] It is understandable that when there are two or more first electrode strips 200 and second electrode strips 300, the first electrode strips 200 and second electrode strips 300 in the composite strip 400 are staggered. Correspondingly, multiple first electrode strip unwinding members 11 and multiple second electrode strip unwinding members 12 can be staggered in the stacking direction of the composite strip 400. Of course, the arrangement of multiple first electrode strip unwinding members 11 and multiple second electrode strip unwinding members 12 is not limited to this, as long as the multiple first electrode strips 200 and multiple second electrode strips 300 are staggered in the stacking direction.
[0050] Among them, a first cutting component 13 is provided between the first composite mechanism 20 and the stacking mechanism 30. The first cutting component 13 is used to cut the composite strip 400 into multiple electrode units 500.
[0051] The first cutting component 13 cuts the composite strip 400 into multiple electrode units 500, wherein each electrode unit 500 includes at least one first electrode piece and at least one second electrode piece stacked together. The first electrode piece is a single-unit structure after the first electrode strip 200 is cut, and the second electrode piece is a single-unit structure after the second electrode strip 300 is cut.
[0052] The stacking mechanism 30 includes a first transfer member and a stacking stage 31. The first transfer member is used to transfer a predetermined number of electrode units 500 and stack them on the stacking stage 31 to form an electrode group 600.
[0053] The stacking table 31 provides support for the stacking. The first transfer component transfers the electrode units 500 cut by the first cutting component 13 to the stacking table 31, and stacks them sequentially along the thickness direction of the electrode units 500 on the stacking table 31 to form an electrode group 600. Each electrode unit 500 has been composited, and the structure of the electrode unit 500 is stable.
[0054] The above scheme, such as Figure 1 and Figure 2 As shown, a first electrode strip 200 and a second electrode strip 300 are provided by a first feeding mechanism 10. The first electrode strip 200 and the second electrode strip 300 are laminated by a first composite mechanism 20 to form a composite strip 400. The composite strip 400 is cut into multiple electrode units 500 by a first cutting assembly 13, and a predetermined number of electrode units 500 are transferred to a stacking table 31 by a first transfer member, and stacked on the stacking table 31 to form an electrode group 600. This achieves the stacking of separator-free electrode units 500, which facilitates the production and fabrication of separator-free batteries.
[0055] In some embodiments, the first electrode strip unwinding member 11 and the second electrode strip unwinding member 12 can be unwinding rollers, etc. The first cutting assembly 13 can include a cutting base and a cutting member, which can be a cutting blade, etc. The cutting blade can be movably connected to the cutting base, and for example, it can move horizontally, vertically, etc., to perform cutting. The first transfer member can be a transfer robot, or a movable member movably connected to the stacking mechanism 30. The first transfer member can grip, grasp, or pick up the electrode unit 500, etc., and then transfer the electrode unit 500.
[0056] As a possible approach, such as Figure 1 and Figure 3 As shown, the solid-state battery stacking device 100 also includes a first short-circuit tester 50, used to test whether the electrode unit 500 is short-circuited before being transferred to the stacking stage 31.
[0057] Each electrode unit 500 is tested by the first short-circuit tester 50 to determine whether the electrode unit 500 is short-circuited. If the electrode unit 500 is not short-circuited, it can be transferred to the stacking stage 31 by the first transfer member. If the electrode unit 500 is short-circuited, the electrode unit 500 can be rejected to avoid material waste caused by rejection after the electrode group is formed.
[0058] In some embodiments, the first short-circuit test piece 50 may be disposed between the first cutting component 13 and the stacking mechanism 30 to facilitate short-circuit testing of the electrode unit 500 obtained by the first cutting component 13.
[0059] As a possible approach, such as Figure 1 and Figure 4 As shown, the first composite mechanism 20 includes a first hot pressing assembly 21, and a feeding laminating roller 22 and a discharging laminating roller 23 respectively disposed on both sides of the first hot pressing assembly 21; the feeding laminating roller 22 includes a first feeding sub-roller 221 and a second feeding sub-roller 222 disposed opposite to each other; the discharging laminating roller 23 includes a first discharging sub-roller 231 and a second discharging sub-roller 232 disposed opposite to each other.
[0060] The first electrode strip 200 and the second electrode strip 300 are hot-pressed together by the first hot-pressing assembly 21. 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 hot-pressing assembly can make the adhesive on the first electrode strip 200 and the second electrode strip 300 sticky, thereby connecting the two and improving the stability of the electrode unit 500.
[0061] In some embodiments, the first hot-pressing assembly 21 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 pressing electrode strip and the second electrode strip 300. The first heating element may be a heating furnace.
[0062] The first feed roller 221 and the second feed roller 222 are used to laminate the first electrode strip 200 and the second electrode strip 300 passing through them. Preferably, the distance between the first feed roller 221 and the second feed roller 222 is adjustable. For example, the position of the first feed roller 221 is adjustable, and / or the position of the second feed roller 222 is adjustable to accommodate different numbers of the first electrode strip 200 and the second electrode strip 300.
[0063] The first discharge roller 231 and the second discharge roller 232 are used to laminate the composite strip 400 passing through them. Preferably, the distance between the first discharge roller 231 and the second discharge roller 232 is adjustable. For example, the position of the first discharge roller 231 is adjustable, and / or the position of the second discharge roller 232 is adjustable, in order to accommodate composite strips 400 of different thicknesses.
[0064] As an implementation method, the first feed roller 221, the second feed roller 222, the first discharge roller 231, and the second discharge roller 232 are all heated rollers.
[0065] By configuring the first feed roller 221 and the second feed roller 222 as heating rollers, the first electrode strip 200 and the second electrode strip 300 can be preheated as they pass through the feed laminating roller 22, causing the adhesive to become viscous. This accelerates the hot pressing rate in the first hot pressing assembly 21, improving production efficiency. Configuring the first discharge roller 231 and the second discharge roller 232 as heating rollers further stabilizes the laminated composite strip 400, improving the reliability of the connection.
[0066] It is understood that the first feed roller 221, the second feed roller 222, the first discharge roller 231 and the second discharge roller 232 can be heat-conducting components and connected to the heating structure; or the first feed roller 221, the second feed roller 222, the first discharge roller 231 and the second discharge roller 232 can be heating components.
[0067] Of course, this application is not limited to this. In other embodiments, one of the first feed roller 221 and the second feed roller 222 may be a heating roller; one of the first discharge roller 231 and the second discharge roller 232 may be a heating roller.
[0068] As a possible approach, such as Figure 1 and Figure 4 As shown, the first composite mechanism 20 also includes a clamping assembly 24, which is used to clamp the composite strip 400 at the positions from the feed layer roller 22 to the discharge layer roller 23.
[0069] By using clamping components 24 positioned between the feed laminating roller 22 and the discharge laminating roller 23 to clamp the composite strip 400, the first electrode strip 200 and the second electrode strip 300 can smoothly enter and exit the first composite mechanism 20.
[0070] It is understood that the clamping assembly 24 may include an upper clamping member 243 and a lower clamping member 243, wherein the upper clamping member 243 and the lower clamping member 243 may be a film clamping device, a clamping plate, a clamping sheet, etc. For example, the upper clamping member 243 and the lower clamping member 243 may be a PET film.
[0071] As a possible approach, such as Figure 1 and Figure 4As shown, the clamping assembly 24 includes an unwinding member 241 and a winding member 242 respectively disposed on both sides of the first hot pressing assembly 21, and a clamping member 243 wound around the unwinding member 241 and the winding member 242; the unwinding member 241 includes a first unwinding portion 241a and a second unwinding portion 241b disposed opposite to each other, the winding member 242 includes a first winding portion 242a and a second winding portion 242b disposed opposite to each other, and the clamping member 243 includes a first clamping member 243a and a second clamping member 243b; the first clamping member 243a is wound sequentially around the first unwinding portion 241a, the first feed roller 221, the first hot pressing assembly 21, the first discharge roller 231 and the first winding portion 242a; the second clamping member 243b is wound sequentially around the second unwinding portion 241b, the second feed roller 222, the first hot pressing assembly 21, the second discharge roller 232 and the second winding portion 242b.
[0072] Specifically, by wrapping the clamping member 243 around the unwinding member 241 and the winding member 242, the clamping member 243 can form a sandwich between the winding member 242 and the unwinding member 241, so as to clamp the first electrode strip 200 and the second electrode strip 300.
[0073] The first unwinding section 241a and the second unwinding section 241b can be spaced apart vertically or horizontally. At least one of the first unwinding section 241a and the second unwinding section 241b can be movable, so that the distance between the first unwinding section 241a and the second unwinding section 241b can be adjusted according to the thickness of the composite strip 400.
[0074] Similarly, the first winding section 242a and the second winding section 242b can be spaced apart vertically or horizontally. At least one of the first winding section 242a and the second winding section 242b can be movable, so that the distance between the first winding section 242a and the second winding section 242b can be adjusted according to the thickness of the composite strip 400.
[0075] In some embodiments, the clamping member 243 can be released from the first unwinding section 241a, wound around the first hot pressing assembly 21, wound into the first winding section 242a, and then wound back into the first unwinding section 241a to form a loop.
[0076] The first clamping member 243a passes sequentially around the first unwinding section 241a, the first feed roller 221, the first hot pressing assembly 21, the first discharge roller 231, and the first winding section 242a; the second clamping member 243b passes sequentially around the second unwinding section 241b, the second feed roller 222, the first hot pressing assembly 21, the second discharge roller 232, and the second winding section 242b. In this way, the first electrode strip 200 and the second electrode strip 300 can be clamped by the first clamping member 243a and the second clamping member 243b, and both are located between the first clamping member 243a and the second clamping member 243b between the feed laminating roller 22 and the discharge laminating roller 23.
[0077] As a possible approach, such as Figure 1 and Figure 4 As shown, the solid-state battery stacking device 100 further includes: a first die-cutting assembly 14 for die-cutting the first electrode strip 200 to form a first electrode tab; a second die-cutting assembly 15 for die-cutting the second electrode strip 300 to form a second electrode tab; and a second cutting assembly 25 disposed before the first composite mechanism 20 for cutting the second electrode strip 300 after die-cutting to form the second electrode tab. The second electrode strip 300 is a negative electrode strip, and each second electrode strip 300 has a first electrode strip 200 underneath it.
[0078] Specifically, the first die-cutting component 14 can be located between the first electrode strip unwinding component 11 and the first feeding roller 221. Of course, it can also be located in other positions, as long as it can be used to die-cut the first electrode strip 200 between the first electrode strip unwinding component 11 and the first feeding roller 221 to form the first electrode tab.
[0079] Similarly, the second die-cutting assembly 15 can be located between the second electrode strip unwinding member 12 and the second feeding roller 222. Of course, it can also be located in other positions, as long as it can be used to die-cut the second electrode strip 300 between the second electrode strip unwinding member 12 and the second feeding roller 222 to form the second electrode tab.
[0080] The second cutting assembly 25 can cut the second electrode strip 300 after die-cutting to form the second electrode tab, and each second electrode strip 300 has a first electrode strip 200 underneath, so that the first electrode strip 200 can serve to receive the second electrode piece obtained after the second electrode strip 300 is cut. For example, the second cutting assembly 25 may include a cutting blade.
[0081] As a possible approach, such as Figure 3As shown, the solid-state battery stacking device 100 also includes a second feeding mechanism 60, which includes a third electrode strip unwinding member 61241 for providing the third electrode strip, the third electrode strip being a negative electrode strip; a third cutting component 62 is provided between the third electrode strip unwinding member 61241 and the stacking mechanism 30, the third cutting component 62 being used to cut the third electrode strip into multiple third electrode single pieces 700.
[0082] By setting a second feeding mechanism 60, a negative electrode strip can be provided. In this way, the negative electrode strip provided by the second feeding mechanism 60 can be die-cut and cut to form a third electrode single piece 700. Then, the third electrode single piece 700 can be stacked on the positive electrode side of the composite strip 400, so that the positive electrode single piece and the negative electrode single piece are staggered, and the outermost two sides are both negative electrode single pieces.
[0083] In some embodiments, a third die-cutting assembly 63 is also included, which is used to die-cut the third electrode strip to form a third tab.
[0084] As a possible approach, such as Figure 1 and Figure 3 As shown, the solid-state battery stacking device 100 also includes a second composite mechanism 70, which includes a second hot-pressing assembly 71. The second hot-pressing assembly 71 is used to connect multiple electrode units 500 and connect them with a third electrode single piece 700 to form an electrode group.
[0085] Multiple electrode units 500 are hot-pressed together by the second hot-pressing assembly 71 to form an electrode group 600, and the third electrode piece 700 is connected to the electrode group 600 to form an electrode group.
[0086] In some embodiments, the second 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.
[0087] As a possible approach, such as Figure 1 and Figure 3 As shown, the second composite mechanism 70 includes a second short-circuit tester 72, which is used to test whether the pole group is short-circuited.
[0088] The electrode group is tested by the second 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, the electrode unit 500 can be transferred to the defective product area.
[0089] In some embodiments, the second short-circuit test piece 72 may be disposed after the second hot-pressing assembly 71 to facilitate short-circuit testing of the electrode assembly after the second hot-pressing.
[0090] 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.
[0091] 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 50, the second 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 50 and the second short-circuit test piece 72.
[0092] 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 lamination device, characterized by, The device includes a first feeding mechanism, a first composite mechanism, and a stacking mechanism arranged sequentially. The first feeding mechanism includes at least one first electrode strip unwinding member and at least one second electrode strip unwinding member. The first electrode strip unwinding member is used to provide the first electrode strip, and the second electrode strip unwinding member is used to provide the second electrode strip. The number of the first electrode strip unwinding members and the second electrode strip unwinding members is the same. The first composite mechanism is used to laminate at least one first electrode strip and at least one second electrode strip to form a composite strip. The first electrode strip and the second electrode strip have opposite electrical properties. A first cutting component is provided between the first composite mechanism and the stacking mechanism. The first cutting component is used to cut the composite strip into multiple electrode units. The stacking mechanism includes a first transfer member and a stacking table. The first transfer member is used to transfer a predetermined number of electrode units and stack them on the stacking table to form an electrode group.
2. The solid state battery stack device of claim 1, wherein, It also includes a first short-circuit test piece, used to test whether the electrode unit is short-circuited before being transferred to the stacking stage.
3. The solid state battery stack device of claim 1, wherein, The first composite mechanism includes a first hot pressing assembly, and a feed laminating roller and a discharge laminating roller respectively disposed on both sides of the first hot pressing assembly; The feed laminating roller includes a first feed dividing roller and a second feed dividing roller arranged opposite to each other; The discharge laminating roller includes a first discharge dividing roller and a second discharge dividing roller arranged opposite to each other.
4. The solid state battery stack device of claim 3, wherein, The first feed roller, the second feed roller, the first discharge roller, and the second discharge roller are all heated rollers.
5. The solid state battery stack device of claim 3, wherein, The first composite mechanism further includes a clamping assembly for clamping the composite strip at the position from the feed laminating roller to the discharge laminating roller.
6. The solid state battery stack device of claim 5, wherein, The clamping assembly includes an unwinding member and a winding member respectively disposed on both sides of the first hot pressing assembly, and a clamping member wound around the unwinding member and the winding member; The unwinding component includes a first unwinding section and a second unwinding section arranged opposite to each other; the winding component includes a first winding section and a second winding section arranged opposite to each other; and the clamping component includes a first clamping component and a second clamping component. The first clamping member passes sequentially around the first unwinding section, the first feed roller, the first hot pressing assembly, the first discharge roller, and the first winding section; the second clamping member passes sequentially around the second unwinding section, the second feed roller, the first hot pressing assembly, the second discharge roller, and the second winding section.
7. The solid state battery stack device of claim 1, wherein, Also includes: A first die-cutting assembly is used to die-cut the first electrode strip to form a first electrode tab; The second die-cutting assembly is used to die-cut the second electrode strip to form a second electrode tab; The second cutting component is disposed in front of the first composite mechanism and is used to cut the second electrode strip after it has been die-cut to form the second electrode tab. The second electrode strip is a negative electrode strip and the first electrode strip is located under each second electrode strip.
8. The solid state battery stack device of claim 1, wherein, It also includes a second feeding mechanism, which includes a third electrode strip unwinding member for providing the third electrode strip, wherein the third electrode strip is a negative electrode strip; A third cutting component is provided between the third electrode strip unwinding component and the stacking mechanism. The third cutting component is used to cut the third electrode strip into multiple third electrode sheets.
9. The solid state battery stack device of claim 8, wherein, It also includes a second composite mechanism, which includes a second hot-pressing assembly for connecting multiple electrode units and connecting them with the third electrode monolith to form an electrode group.
10. The solid state battery stack device of claim 9, wherein, The second composite mechanism includes a second short-circuit test piece, which is used to test whether the pole group is short-circuited.