Pole piece production device and solid-state battery manufacturing equipment

Abstract

The invention relates to a pole piece production device and solid-state battery manufacturing equipment. The pole piece production device comprises an unwinding assembly, a winding assembly and a winding assembly, wherein the unwinding assembly is used for unwinding and outputting a pole piece material belt to downstream; the flaking assembly comprises a cutting mechanism and a conveying mechanism, the cutting mechanism is arranged on the downstream of the unwinding assembly, and the conveying mechanism is arranged on the downstream side of the cutting mechanism; and the tab rubberizing assembly is arranged on the conveying path of the conveying mechanism. Therefore, the tab of the pole piece material produced by the pole piece production device is adhered with the adhesive tape, so that the tab on the pole piece material can be insulated from the adjacent pole piece material with opposite polarity through the adhesive tape when the pole piece material is subsequently stacked to form a battery cell of a solid-state battery, and the short circuit phenomenon is avoided; and the safety of the solid-state battery is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid-state battery manufacturing equipment, in particular to a pole piece manufacturing device and a solid-state battery manufacturing equipment. BACKGROUND

[0002] With the continuous progress of science and technology and the increasing demand of people, battery technology is also developing. Among them, solid-state battery is a new type of battery technology, which has a solid-state electrolyte instead of a liquid-state electrolyte. Compared with traditional liquid-state batteries, solid-state batteries have higher energy density, faster charging speed, higher safety performance and longer service life, and have received widespread attention.

[0003] In the prior art, a solid-state battery generally includes a positive electrode, a negative electrode, a solid-state electrolyte, a rubber frame, etc. The positive and negative electrode sheets, solid-state electrolyte and rubber frame materials are first cut into sheet materials, and then various sheet materials are stacked on a stacking table to form a solid-state battery cell. However, when stacking, the positive electrode ears on the positive electrode sheet are easy to contact with the negative electrode sheet and cause short circuit, which greatly reduces the safety of the solid-state battery. SUMMARY

[0004] Therefore, it is necessary to provide a pole piece manufacturing device and a solid-state battery manufacturing equipment which can avoid the contact between the pole ear and the pole sheet with opposite polarity to cause short circuit and improve the safety of the solid-state battery.

[0005] A pole piece manufacturing device, comprising:

[0006] A winding-off assembly for winding off and outputting a pole sheet material belt downstream;

[0007] A manufacturing assembly comprising a cutting mechanism and a conveying mechanism, the cutting mechanism being arranged downstream of the winding-off assembly, and the conveying mechanism being arranged on the downstream side of the cutting mechanism; and

[0008] A pole ear adhesive assembly arranged on the material conveying path of the conveying mechanism.

[0009] In some embodiments, the cutting mechanism is used to cut the passing pole sheet material belt into pole sheet materials, the conveying mechanism is used to receive and convey the pole sheet materials, and the pole ear adhesive assembly is used to paste adhesive tape to the pole ear of the pole sheet material on the conveying mechanism.

[0010] In some embodiments, the pole sheet material is a positive pole sheet of a solid-state battery.

[0011] In some embodiments, the manufacturing assembly further comprises a first visual detection mechanism, and the first visual detection mechanism is arranged on the material conveying path of the conveying mechanism and is upstream of the pole ear adhesive assembly.

[0012] In some embodiments, the lug taping assembly comprises a motion driving mechanism and a taping mechanism mounted on a driving end of the motion driving mechanism, and the first visual detection mechanism is communicatively connected with the motion driving mechanism.

[0013] In some embodiments, the first visual detection mechanism is configured to detect the position of the lug sheet on the conveying mechanism, and the motion driving mechanism is configured to drive the taping mechanism to adjust the position according to the detection result of the first visual detection mechanism.

[0014] In some embodiments, the lug taping assembly is provided as at least two, and the motion driving mechanism of each lug taping assembly is communicatively connected with the first visual detection mechanism.

[0015] In some embodiments, the lug taping assemblies are arranged in sequence along the material conveying path of the conveying mechanism, wherein any two adjacent lug taping assemblies are a first lug taping assembly and a second lug taping assembly located downstream of the first lug taping assembly, and the first visual detection mechanism is configured to detect the position of the lug sheet on the conveying mechanism.

[0016] The motion driving mechanism of the first lug taping assembly is configured to drive the taping mechanism to adjust the position according to the detection result of the first visual detection mechanism on the Nth lug sheet, and when the Nth lug sheet is conveyed to the first lug taping assembly, the motion driving mechanism of the first lug taping assembly drives the taping mechanism to tape the lug of the Nth lug sheet and drives the taping mechanism to reset.

[0017] The motion driving mechanism of the second lug taping assembly is configured to drive the taping mechanism to adjust the position according to the detection result of the first visual detection mechanism on the N+1th lug sheet, and when the N+1th lug sheet is conveyed to the second lug taping assembly, the motion driving mechanism of the second lug taping assembly drives the taping mechanism to tape the lug of the N+1th lug sheet and drives the taping mechanism to reset.

[0018] In some embodiments, the sheet making assembly further comprises a second visual detection mechanism, which is arranged on the material conveying path of the conveying mechanism and located upstream of the lug taping assembly.

[0019] In some embodiments, the second visual detection mechanism is configured to detect surface defects of the lug sheet on the conveying mechanism.

[0020] In some embodiments, the tabletting assembly further comprises a dust removal mechanism arranged on the material conveying path of the conveying mechanism and upstream of the tab taping assembly.

[0021] In some embodiments, the conveying mechanism comprises a vacuum belt conveyor.

[0022] In some embodiments, the tab sheeting device further comprises a cutting assembly and a positioning assembly, both arranged between the unwinding assembly downstream and the tabletting assembly upstream, and the cutting assembly is upstream of the positioning assembly.

[0023] In some embodiments, the cutting assembly is configured to cut a positioning notch on the tab material strip passing therethrough, and the positioning assembly is configured to position the tab material strip by using the positioning notch on the tab material strip passing therethrough.

[0024] In some embodiments, the tabletting assembly further comprises a main drive traction mechanism arranged between the unwinding assembly downstream and the cutting mechanism upstream, configured to traction the tab material strip passing therethrough to the cutting mechanism for conveying.

[0025] A solid-state battery manufacturing apparatus comprising a tab sheeting device as described in any one of the above embodiments and a laminating device.

[0026] The tab sheeting device and the solid-state battery manufacturing apparatus described above, in actual use, the unwinding assembly unwinds and outputs the tab material strip to the cutting mechanism of the tabletting assembly, so that the tab material strip passes through the cutting mechanism and reaches the upstream end of the conveying mechanism. The cutting mechanism cuts the tab material strip passing therethrough to form a tab sheet, and at this time, the tab sheet is at least partially located on the conveying mechanism. The conveying mechanism conveys the tab sheet downstream to the tab taping assembly, and the tab taping assembly pastes the adhesive tape to the tab of the tab sheet.

[0027] In this way, the adhesive tape is pasted to the tab of the tab sheet produced by the tab sheeting device, so that when the tab sheet is stacked to form the battery cell of the solid-state battery, the tab of the tab sheet can be insulated from the adjacent tab sheet with opposite polarity by the adhesive tape, avoiding short circuit phenomenon, which is beneficial to improve the safety of the solid-state battery. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a structural schematic diagram of a tab sheeting device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the above objectives, features and advantages of the present application more clear and understandable, the detailed description of the embodiments of the present application is made below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and with many different combinations of elements, and the present application is not limited to the embodiments described below, and can be practiced with modifications and alterations within the scope of the present application, which are apparent to those skilled in the art.

[0030] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0031] In addition, the terms "first", "second", "third" and the like are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0032] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0034] It is to be understood that when an element such as a layer, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or intervening elements can be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. It will be understood that, when a member is referred to as being "coupled" or "connected" to another member, it can be directly coupled or connected to the other member or intervening members can be present. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. Expressions such as "at least one of," when preceding the syntax elements A, B, and / or C, mean that the solution can include A alone; or B alone; or C alone; or any combination of these elements, for example, AB; AC; BC; or ABC.

[0035] Referring to Figure 1 The application provides an electrode sheet manufacturing device, which comprises a unwinding assembly 10, a manufacturing assembly 20 and a tab taping assembly 30. The unwinding assembly 10 is configured to unwind and output an electrode sheet web A downstream. The manufacturing assembly 20 comprises a cutting mechanism 21 and a conveying mechanism 22. The cutting mechanism 21 is arranged downstream of the unwinding assembly 10 and configured to cut the passing electrode sheet web A into electrode sheet pieces C. The conveying mechanism 22 is arranged on the downstream side of the cutting mechanism 21 and configured to receive the electrode sheet pieces C cut by the cutting mechanism 21 and convey the received electrode sheet pieces C downstream. The tab taping assembly 30 is arranged on the conveying path of the conveying mechanism 22, so that the conveying mechanism 22 can convey the electrode sheet pieces C thereon to pass through the tab taping assembly 30. The tab taping assembly 30 is configured to paste adhesive tape to the tabs of the passing electrode sheet pieces C. It should be noted that the electrode sheet pieces C can be positive electrode sheets of solid-state batteries, and the tabs on the electrode sheet pieces C are positive tabs. Of course, in other embodiments, the electrode sheet pieces C can be negative electrode sheets of solid-state batteries, and the tabs on the electrode sheet pieces C are negative tabs.

[0036] In actual use, the electrode sheet manufacturing device described above unwinds and outputs the electrode sheet web A from the unwinding assembly 10 to the cutting mechanism 21 of the manufacturing assembly 20, so that the electrode sheet web A passes through the cutting mechanism 21 and reaches the upstream end of the conveying mechanism 22. The cutting mechanism 21 cuts the passing electrode sheet web A into electrode sheet pieces C, and at this time, the electrode sheet pieces C are at least partially located on the conveying mechanism 22. The conveying mechanism 22 conveys the electrode sheet pieces C downstream to the tab taping assembly 30, and the tab taping assembly 30 pastes adhesive tape to the tabs of the electrode sheet pieces C.

[0037] In this way, the tabs of the electrode sheet pieces C produced by the electrode sheet manufacturing device are pasted with adhesive tape, so that when the electrode sheet pieces C are stacked to form the battery cell of the solid-state battery, the tabs on the electrode sheet pieces C can be insulated from the adjacent electrode sheet pieces C with opposite polarity by the adhesive tape, avoiding short circuit phenomenon, which is beneficial to improve the safety of the solid-state battery.

[0038] In embodiments of this application, the sheet-making assembly 20 further includes a first visual inspection mechanism 26. This first visual inspection mechanism 26 is arranged on the material conveying path of the conveying mechanism 22 and is located upstream of the tab-applying assembly 30. Thus, the first visual inspection mechanism 26 performs position detection on the electrode sheet material C on the conveying mechanism 22, thereby obtaining the position information of the tabs on the electrode sheet material C. This allows the tab-applying assembly 30 to adjust its position based on the tab position information detected by the first visual inspection mechanism 26, ensuring that the tab-applying assembly 30 can accurately apply adhesive tape to the tabs of the electrode sheet material C as it passes through, greatly improving the positional accuracy of the adhesive application. Optionally, the first visual inspection mechanism 26 can be a camera.

[0039] Specifically, in this embodiment, the tab applicator assembly 30 includes a motion drive mechanism 31 and an applicator 32 mounted on the drive end of the motion drive mechanism 31. The motion drive mechanism 31 is communicatively connected to the first vision detection mechanism 26. The motion drive mechanism 31 can drive the applicator 32 to adjust its position based on the tab position information detected by the first vision detection mechanism 26, ensuring that when the electrode sheet C passes through the applicator 32, the applicator 32 can accurately apply the tape to the tab of the electrode sheet C.

[0040] Furthermore, the motion drive mechanism 31 can drive the adhesive applicator 32 to move along a first direction, a second direction, and a third direction, and these three directions are perpendicular to each other. Thus, by using the motion drive mechanism 31 to drive the adhesive applicator 32 to move along the first direction, the second direction, and the third direction, the position of the adhesive applicator 32 and the adhesive applicator action can be achieved.

[0041] Specifically Figure 1 In the illustrated embodiment, the first direction is the left-right direction, the second direction is the direction perpendicular to the paper surface, and the third direction is the up-down direction. Thus, in actual use, the conveying mechanism 22 conveys the electrode sheet C to the first visual inspection mechanism 26, which performs position detection on the electrode sheet C to obtain the position information of the electrode tabs. Then, the motion driving mechanism 31 drives the adhesive applicator 32 to move along the first and second directions based on the electrode tab position information detected by the first visual inspection mechanism 26, thereby adjusting the position of the adhesive applicator 32. Next, the conveying mechanism 22 conveys the electrode sheet to the adhesive applicator 32, at which point the tape on the adhesive applicator 32 is aligned with the electrode tabs of the electrode sheet C in the third direction. Then, the motion driving mechanism 31 drives the adhesive applicator 32 to move along the third direction and attaches the tape to the electrode tabs of the electrode sheet C.

[0042] It should be noted that the number of the tab taping assembly 30 is not limited to one. In other embodiments, the number of the tab taping assembly 30 can be multiple (i.e. two or more), and each of the movement driving mechanisms 31 of the tab taping assemblies 30 is communicatively connected with the first visual detection mechanism 26. In this way, each of the tab taping assemblies 30 can independently adjust the position and tape, which is conducive to improving the production efficiency.

[0043] In specific embodiments, each of the tab taping assemblies 30 is arranged along the feeding path of the conveying mechanism 22 in sequence, and any two adjacent tab taping assemblies 30 are a first tab taping assembly and a second tab taping assembly located downstream of the first tab taping assembly. The first visual detection mechanism 26 is configured to detect the position of the tab sheet C on the conveying mechanism 22.

[0044] The movement driving mechanism 31 of the first tab taping assembly is configured to drive the taping mechanism 32 to adjust the position according to the detection result of the Nth tab sheet C by the first visual detection mechanism 26. When the Nth tab sheet C is conveyed to the first tab taping assembly, the tab of the Nth tab sheet C is located below the taping mechanism of the first tab taping assembly, at which time the movement driving mechanism 31 of the first tab taping assembly drives the taping mechanism 32 to tape the tab of the Nth tab sheet C, and then drives the taping mechanism 32 to reset.

[0045] The movement driving mechanism 31 of the second tab taping assembly is configured to drive the taping mechanism 32 to adjust the position according to the detection result of the N+1th tab sheet C by the first visual detection mechanism 26. When the N+1th tab sheet C is conveyed to the second tab taping assembly, the tab of the N+1th tab sheet C is located below the taping mechanism of the second tab taping assembly, at which time the movement driving mechanism 31 of the second tab taping assembly drives the taping mechanism 32 to tape the tab of the N+1th tab sheet C, and then drives the taping mechanism 32 to reset. In this way, the two adjacent tab taping assemblies 30 can independently adjust the position and tape, and the two adjacent tab taping assemblies 30 can tape the tabs of different tab sheets C in sequence, thereby avoiding interference between the two adjacent tab taping assemblies 30.

[0046] It should be noted that the taping mechanism 32 includes an adsorption plate, which can use a vacuum adsorption method to adsorb the adhesive tape, and then drive the adsorbed adhesive tape to be pasted on the tab of the tab sheet C under the driving action of the movement driving mechanism 31. Of course, the taping mechanism 32 can also use other mechanisms as long as it can realize the pasting of the adhesive tape on the tab of the tab sheet C, which is not limited herein.

[0047] In the embodiment of the present application, the piece-making assembly 20 further comprises a main drive traction mechanism 23. The main drive traction mechanism 23 is arranged between the unwinding assembly 10 downstream and the cutting mechanism 21 upstream, and is disposed close to the cutting mechanism 21. The main drive traction mechanism 23 is used to traction the passing pole piece strip A to the cutting mechanism 21. In this way, the main drive traction mechanism 23 traction the pole piece strip A to move a certain length downstream to the cutting mechanism 21 each time, ensuring that the position of the cutting mechanism 21 is accurate each time, and the length of the pole piece piece C formed by cutting the pole piece strip A is consistent in size.

[0048] Specifically, in the embodiment, the conveying mechanism 22 is a vacuum belt conveyor, which can fix the pole piece piece C by vacuum adsorption while conveying the pole piece piece C downstream, avoiding the pole piece piece C from being offset or even falling relative to the conveying belt during the conveying process. In this way, in actual use, first, the main drive traction mechanism 23 traction the pole piece strip A to move a certain distance to the cutting mechanism 21, so that the starting end of the pole piece strip A reaches the conveying belt of the conveying mechanism 22 and is adsorbed and fixed on the conveying belt; then, the cutting mechanism 21 cuts the pole piece strip A. At this time, part of the pole piece piece C is adsorbed and fixed on the conveying belt of the conveying mechanism 22; then, the conveying belt of the conveying mechanism 22 moves downstream, thereby driving the pole piece piece C to move downstream.

[0049] In the embodiment of the present application, the piece-making assembly 20 further comprises a second visual detection mechanism 27. The second visual detection mechanism 27 is arranged on the conveying path of the conveying mechanism 22 and is located upstream of the tab pasting assembly 30, so that the pole piece piece C on the conveying mechanism 22 can pass through the second visual detection mechanism 27 first and then pass through the tab pasting assembly 30 during conveying. In actual use, the pole piece piece C conveyed by the conveying mechanism 22 passes through the second visual detection mechanism 27 and the tab pasting assembly 30 in turn. When the conveying mechanism 22 conveys the pole piece piece C to the second visual detection mechanism 27, the second visual detection mechanism 27 detects the surface defects of the pole piece piece C. When the conveying mechanism 22 conveys the pole piece piece C to the tab pasting assembly 30, the tab pasting assembly 30 pastes the adhesive tape to the tab of the pole piece piece C. Optionally, the second visual detection mechanism 27 can all use cameras.

[0050] It should be noted that the pole piece piece C with surface defects detected by the second visual detection mechanism 27 will be rejected in the subsequent process, ensuring that the pole piece piece C flowing into the stacking station is a pole piece piece C with qualified size and surface quality, thereby greatly improving the quality of the solid-state battery.

[0051] Specifically, the tabletting assembly 20 further comprises a dust removal mechanism 25 arranged on the material conveying path of the conveying mechanism 22 and upstream of the tab pasting assembly 30. In actual use, the conveying mechanism 22 can convey the tab sheet material C to pass through the dust removal mechanism 25. When the conveying mechanism 22 conveys the tab sheet material C to pass through the dust removal mechanism 25, the dust removal mechanism 25 performs dust removal treatment on the tab sheet material C, thereby ensuring that the surface cleanliness of the tab sheet material C meets the process requirements.

[0052] Specifically, the tabletting assembly 20 further comprises an electrostatic removal and iron pin removal mechanism 24. The electrostatic removal and iron pin removal mechanism 24 is arranged on the material conveying path of the conveying mechanism 22 and upstream of the tab pasting assembly 30. In actual use, the conveying mechanism 22 can convey the tab sheet material C to pass through the electrostatic removal and iron pin removal mechanism 24. When the conveying mechanism 22 conveys the tab sheet material C to pass through the electrostatic removal and iron pin removal mechanism 24, the electrostatic removal and iron pin removal mechanism 24 performs electrostatic removal and iron pin removal treatment on the tab sheet material C.

[0053] Optionally, on the material conveying path of the conveying mechanism 22, the electrostatic removal and iron pin removal mechanism 24, the dust removal mechanism 25, the first visual detection mechanism 26, the second visual detection mechanism 27, and the tab pasting assembly 30 are arranged in sequence. That is, the conveying mechanism 22 can convey the tab sheet material C to pass through the electrostatic removal and iron pin removal mechanism 24, the dust removal mechanism 25, the first visual detection mechanism 26, the second visual detection mechanism 27, and the tab pasting assembly 30 in sequence.

[0054] In the embodiment of the present application, the tab tabletting device further comprises a cutting assembly 40 and a positioning assembly 50. The cutting assembly 40 and the positioning assembly 50 are both arranged between the unwinding assembly 10 downstream and the main drive traction mechanism 23 of the tabletting assembly 20 upstream, and the cutting assembly 40 is upstream of the positioning assembly 50. The tab material belt A unwound and output by the unwinding assembly 10 passes through the cutting assembly 40, the positioning assembly 50, the main drive traction mechanism 23, and the cutting mechanism 21 in sequence. Thus, the cutting assembly 40 is used to cut the tab material belt A passing through, so that a positioning notch is formed on the tab material belt A. The positioning assembly 50 is used to position the tab material belt A by using the positioning notch on the tab material belt A, to ensure that the length dimension of the tab sheet material C formed by the cutting mechanism 21 cutting the tab material belt A meets the accuracy requirements. It should be noted that the positioning notch can be a V-shaped notch, and of course can also be a notch of other shapes, as long as it is convenient for the positioning assembly 50 to realize the positioning of the tab material belt A, which is not limited herein.

[0055] Optionally, the positioning assembly 50 comprises a camera, which is used to detect the position of the positioning notch on the pole piece material strip A. When the camera detects that the positioning notch on the pole piece material strip A moves to the preset position, the main traction mechanism 23 stops traction of the pole piece material strip A to move downstream, i.e. the positioning of the pole piece material strip A is achieved.

[0056] It should be noted that, in some embodiments, the pole piece material strip A output by the unwinding assembly 10 has pole tabs, and thus a pole tab die-cutting assembly is not required. In other embodiments, the pole piece material strip A output by the unwinding assembly 10 does not have pole tabs, and thus a pole tab die-cutting assembly is required. Specifically, the pole tab die-cutting assembly is arranged between the downstream of the unwinding assembly 10 and the upstream of the cutting assembly 40, and is used to die-cut the passing pole piece material strip A to form pole tabs on the pole piece material strip A. Of course, the pole tab die-cutting assembly can also be arranged between the downstream of the cutting assembly 40 and the upstream of the positioning assembly 50, which is not particularly limited herein.

[0057] In the embodiments of the present application, the unwinding assembly 10 comprises two unwinding mechanisms 11 and a splicing mechanism 12 arranged downstream of the two unwinding mechanisms 11. Each unwinding mechanism 11 is capable of loading a pole piece material roll and driving the pole piece material roll to rotate to unwind the pole piece material strip A downstream. In actual use, one of the unwinding mechanisms 11 unwinds the pole piece material strip A downstream while the other unwinding mechanism 11 is loaded with a pole piece material roll and waits for unwinding. When the pole piece material roll on the unwinding mechanism 11 being unwound is unwound, the splicing mechanism 12 cuts the passing pole piece material strip A and connects (e.g. using adhesive tape) the downstream cut end of the pole piece material strip A with the strip starting end of the pole piece material roll on the unwinding mechanism 11 waiting for unwinding. At this time, the unwinding mechanism 11 being unwound switches to the state of waiting for unwinding after replacing the pole piece material roll, and the unwinding mechanism 11 waiting for unwinding switches to the state of being unwound to continue conveying the pole piece material strip A downstream.

[0058] It should be noted that, after the pole piece material strip A is cut, two cut ends are formed at the cut end, one of which is the upstream cut end and the other is the downstream cut end. When the splicing mechanism 12 splices, it connects the downstream cut end of the pole piece material strip A with the strip starting end of the pole piece material roll on the unwinding mechanism 11 waiting for unwinding.

[0059] Specifically, the unwinding assembly 10 further comprises a tension adjusting mechanism arranged between the downstream of the splicing mechanism 12 and the upstream of the cutting assembly 40, which is used to tension the pole piece material strip A and adjust the tension of the pole piece material strip A.

[0060] Further, the tension adjusting mechanism comprises a first fixed over roller 131, a movable over roller 133, a second fixed over roller 135 and a movement driving member 137. The first fixed over roller 131 is arranged upstream of the movable over roller 133, and the second fixed over roller 135 is arranged downstream of the movable over roller 133. The first fixed over roller 131, the movable over roller 133 and the second fixed over roller 135 are sequentially wound by the jelly-roll material belt A. The movement driving member 137 is drivingly connected with the movable over roller 133, and is used to drive the movable over roller 133 to move relative to the first fixed over roller 131 and the second fixed over roller 135, so as to drive the jelly-roll material belt A to be tensioned or loosened, that is, to adjust the tension of the jelly-roll material belt A. It should be noted that the movement driving member 137 can drive the movable over roller 133 to move linearly, or can drive the movable over roller 133 to swing, as long as the tension of the jelly-roll material belt A can be adjusted by changing the position of the movable over roller 133, which is not limited herein.

[0061] In specific embodiments, the unwinding assembly 10 further comprises a deviation rectifying mechanism 14, which is arranged between the downstream of the tension adjusting mechanism and the upstream of the cutting assembly 40. The deviation rectifying mechanism 14 is used to drive the jelly-roll material belt A to adjust the position in the width direction, so as to ensure that the position of the jelly-roll material belt A in the width direction of itself, which passes through the cutting assembly 40, the positioning assembly 50 and the jelly-roll making assembly 20, meets the process requirements.

[0062] In specific embodiments, the unwinding assembly 10 further comprises a material belt buffering mechanism 15, which is arranged between the downstream of the deviation rectifying mechanism 14 and the upstream of the cutting assembly 40. The material belt buffering mechanism 15 is used to buffer the jelly-roll material belt A, that is, the jelly-roll material belt A unwound and output by the unwinding mechanism 11 is buffered in the material belt buffering mechanism 15, and the jelly-roll material belt A buffered in the material belt buffering mechanism 15 is pulled out by the main driving traction mechanism 23. It should be noted that the material belt buffering mechanism 15 can adopt a relatively mature prior art, as long as it can buffer the jelly-roll material belt A, which is not limited herein.

[0063] Based on the jelly-roll making device, the application further provides a solid-state battery manufacturing equipment. The solid-state battery manufacturing equipment comprises a jelly-roll making device and a jelly-roll device. The jelly-roll making device is used to prepare jelly-roll pieces C by using the jelly-roll material belt A. The jelly-roll device is used to stack the jelly-roll pieces C to form a solid-state battery.

[0064] It should be noted that when the jelly-roll piece C is a positive electrode piece, the jelly-roll device is used to stack the jelly-roll piece C and a negative electrode piece to form a solid-state battery. When the jelly-roll piece C is a negative electrode piece, the jelly-roll device is used to stack the jelly-roll piece C and a positive electrode piece to form a solid-state battery.

[0065] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0066] The above-described embodiments only express several implementation manners of the application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the application, and these all belong to the protection scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A pole piece manufacturing apparatus, characterized by, The application relates to a polar piece strip material cutting and pasting device. The device comprises: a releasing assembly (10) for releasing a polar piece strip material (A) downstream; a cutting assembly (20) comprising a cutting mechanism (21) arranged downstream of the releasing assembly (10) and a conveying mechanism (22) arranged downstream of the cutting mechanism (21); and 2. The pole piece manufacturing apparatus according to claim 1, wherein a tab pasting assembly (30) arranged on a conveying path of the conveying mechanism (22).

3. The pole piece manufacturing apparatus according to claim 2, wherein The cutting mechanism (21) is used for cutting the polar piece strip material (A) into polar piece pieces (C), the conveying mechanism (22) is used for receiving and conveying the polar piece pieces (C), and the tab pasting assembly (30) is used for pasting adhesive tape on the tabs of the polar piece pieces (C) on the conveying mechanism (22).

4. The pole piece manufacturing apparatus according to claim 1, wherein The polar piece pieces (C) are positive polar pieces of solid-state batteries.

5. The pole piece manufacturing apparatus according to claim 4, wherein The cutting assembly (20) further comprises a first visual detection mechanism (26) arranged on the conveying path of the conveying mechanism (22) and upstream of the tab pasting assembly (30).

6. The pole piece manufacturing apparatus according to claim 5, wherein The tab pasting assembly (30) comprises a motion driving mechanism (31) and a pasting mechanism (32) mounted on a driving end of the motion driving mechanism (31), and the first visual detection mechanism (26) is in communication connection with the motion driving mechanism (31).

7. The pole piece manufacturing apparatus according to claim 5, wherein The first visual detection mechanism (26) is used for position detection of the polar piece pieces (C) on the conveying mechanism (22), and the motion driving mechanism (31) is used for driving the pasting mechanism (32) to adjust the position according to the detection result of the first visual detection mechanism (26).

8. The pole piece manufacturing apparatus according to claim 7, wherein The tab pasting assembly (30) is provided as at least two, and the motion driving mechanism (31) of each tab pasting assembly (30) is in communication connection with the first visual detection mechanism (26). The tab pasting assemblies (30) are arranged in sequence along the conveying path of the conveying mechanism (22), wherein any two adjacent tab pasting assemblies (30) are a first tab pasting assembly and a second tab pasting assembly downstream of the first tab pasting assembly, and the first visual detection mechanism (26) is used for position detection of the polar piece pieces (C) on the conveying mechanism (22). The motion driving mechanism (31) of the first tab pasting assembly is used for driving the pasting mechanism (32) to adjust the position according to the detection result of the first visual detection mechanism (26) on the Nth polar piece piece (C), and when the Nth polar piece piece (C) is conveyed to the first tab pasting assembly, the motion driving mechanism (31) of the first tab pasting assembly drives the pasting mechanism (32) to paste adhesive tape on the tabs of the Nth polar piece piece (C) and drives the pasting mechanism (32) to reset. The movement driving mechanism (31) of the second tab pasting assembly is configured to drive the pasting mechanism (32) to adjust position according to the detection result of the first vision detection mechanism (26) on the N+1 piece of tab sheet material (C); when the N+1 piece of tab sheet material (C) is conveyed to the second tab pasting assembly, the movement driving mechanism (31) of the second tab pasting assembly drives the pasting mechanism (32) to paste the tab of the N+1 piece of tab sheet material (C), and drives the pasting mechanism (32) to reset.

9. The pole piece manufacturing apparatus of claim 1, wherein The sheet making assembly (20) further comprises a second vision detection mechanism (27), which is arranged on the material conveying path of the conveying mechanism (22) and upstream of the tab pasting assembly (30).

10. The pole piece manufacturing apparatus according to claim 9, wherein The second vision detection mechanism (27) is configured to detect surface defects of the tab sheet material (C) on the conveying mechanism (22).

11. The pole piece manufacturing apparatus of claim 1, wherein The sheet making assembly (20) further comprises a dust removal mechanism (25), which is arranged on the material conveying path of the conveying mechanism (22) and upstream of the tab pasting assembly (30).

12. The pole piece manufacturing apparatus of claim 1, wherein The conveying mechanism (22) comprises a vacuum belt conveyor.

13. The pole piece manufacturing apparatus of claim 1, wherein The tab sheet making device further comprises a cutting assembly (40) and a positioning assembly (50), which are both arranged between the unwinding assembly (10) downstream and the sheet making assembly (20) upstream, and the cutting assembly (40) is upstream of the positioning assembly (50).

14. The pole piece manufacturing apparatus of claim 13, wherein The cutting assembly (40) is configured to cut a positioning notch on the passing tab material strip (A), and the positioning assembly (50) is configured to position the tab material strip (A) by using the positioning notch on the passing tab material strip (A).

15. The pole piece manufacturing apparatus of claim 1, wherein The sheet making assembly (20) further comprises a main drive traction mechanism (23), which is arranged between the unwinding assembly (10) downstream and the cutting mechanism (21) upstream, and is configured to convey the passing tab material strip (A) to the cutting mechanism (21).

16. A solid-state battery manufacturing apparatus, characterized by, The device comprises a lamination device and a tab sheet making device according to any one of claims 1 to 15. The device comprises a lamination device and a tab sheet making device according to any one of claims 1 to 15.

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