Battery piece evaporation tool
By designing the battery cell evaporation tooling that supports, eject and adsorption mechanisms, the problems of fragility and unevenness during the battery cell evaporation process are solved, and stable evaporation and efficient production are achieved.
Patent Information
- Application Number
- CN202422233866.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-12
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-12
AI Technical Summary
During the evaporation process of existing battery cells, manual operations can easily lead to crushing, and mechanical devices cannot effectively fix and transport thin-shaped battery cells, resulting in low product quality and production efficiency, and uneven evaporation.
A battery cell evaporation tooling including support, ejection and adsorption mechanism is designed. Through the adsorption mechanism and the evaporation device, the stable adsorption and ejection of the battery cell are ensured. Multi-size suction cups and gas channel design are used to control the suction force, and the thimble structure is optimized to avoid breaking and occlusion.
The stable evaporation of fragile battery cells is achieved, which avoids the problems of crushing and uneven evaporation, and improves production efficiency and product quality.
Smart Images
Figure CN223047576U_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an evaporation coating tooling for battery wafers, belonging to the technical fields of "battery manufacturing technology", "evaporation coating process technology" and "mechanical design and manufacturing". Background Art
[0002] In the field of battery manufacturing technology, especially in the manufacturing processes of solar cells, thin-film batteries, etc., the evaporation coating process is an important technical means. Evaporation coating refers to the technology of converting raw materials into a gaseous state by heating and then recondensing them into a solid thin film under cooling conditions. In the battery manufacturing process, the evaporation coating process is usually used to evaporate functional layers such as perovskite materials on battery wafers. In the field of mechanical design and manufacturing, the design and manufacturing of tooling are important factors to ensure production efficiency and product quality. Tooling is a device used to fix, support, position and transport workpieces, and its design and manufacturing directly affect the operation convenience and product quality in the production process. 2) Solutions of the prior art: The existing technical solutions mainly complete the evaporation coating and transportation of battery wafers through manual operation or simple mechanical devices. For example, manually hold the battery wafer and place it above the evaporation source for evaporation coating, or use a simple fixture to fix the battery wafer and put it into the evaporation coating equipment. 3) Problems of the prior art: However, the existing technologies have some problems and disadvantages in this field. First of all, manual operation is likely to cause the battery wafer to break, affecting product quality and production efficiency. Secondly, the existing mechanical devices cannot effectively fix and transport thin-film battery wafers, and it is easy to cause damage to the battery wafers during the operation. In addition, there is a problem that some areas cannot be evaporated in the existing evaporation coating process, resulting in a reduction in the actual evaporation coating area and affecting the performance of the battery wafer. Therefore, the existing technologies still have certain limitations in the evaporation coating and transportation processes of battery wafers and need to be further improved and optimized. Summary of the Invention
[0003] In order to solve the problems that the existing evaporation coating method is likely to cause the battery wafer to break and affect product quality and production efficiency, the present invention provides an evaporation coating tooling for battery wafers, which is applicable to battery wafers with fragile structures such as perovskite batteries. The tooling is provided with a support mechanism, an ejection mechanism and an adsorption mechanism, and the three mechanisms cooperate with the evaporation coating device to realize the transfer and evaporation coating of the battery wafer.
[0004] The technical solution adopted by the present invention is as follows: A battery chip evaporation tooling includes a support mechanism, an ejection mechanism, and an adsorption mechanism. The support mechanism is used to place the battery chip to be evaporated. The ejection mechanism is used to eject the battery chip from the support mechanism. The adsorption mechanism is used to adsorb the ejected battery chip on the adsorption mechanism. The battery chip includes a first side and a second side. The adsorption mechanism adsorbs the first side of the battery chip, and the second side is the side of the battery chip to be evaporated. The adsorption mechanism cooperates with the evaporation device so that the second side faces the evaporation source of the evaporation device;
[0005] The adsorption mechanism includes a substrate, an air passage channel arranged on the substrate, and suction cups communicating with the air passage channel. The air passage channel is connected to a negative pressure device through an air outlet arranged at the edge of the substrate. There are several suction cups, and several suction cups are distributed on the four sides of a square and on the two diagonals of the square.
[0006] As a preferred method, the suction cups include first-size suction cups and second-size suction cups. The diameter of the first-size suction cups is larger than that of the second-size suction cups. There are several first-size suction cups and several second-size suction cups. Adjacent two first-size suction cups are spaced by one or more second-size suction cups.
[0007] As a preferred method, the suction cups are arranged in the form of bosses. The bosses are hollow and communicate with the air pipeline. A pressure relief port is arranged at the adsorption port of the bosses; the first-size suction cups and the second-size suction cups respectively correspond to the first-size bosses and the second-size bosses;
[0008] The first size and the second size are the diameters of the bosses, and the ratio of the first size to the second size is (2-4):1.
[0009] As a preferred method, the ejection mechanism includes a base, an ejector pin, and an ejector pin sleeve. The base includes a bottom plate and a top plate. The ejector pin is elastically arranged on the bottom plate through a spring. The ejector pin sleeve is arranged on the top plate. The first end of the ejector pin is connected to the spring, and the second end passes through the sleeve and extends outside the sleeve. The second end is an arc-shaped curved surface structure protruding outward. The sleeve, the spring, and the ejector pin are coaxially arranged.
[0010] As a preferred method, the ratio of the inner diameter of the sleeve to the outer diameter of the ejector pin is (1.2-1.5):1.
[0011] As a preferred method, a micro-texture is arranged on the arc-shaped curved surface structure of the second end. The micro-texture is circular protrusions arranged on the arc-shaped curved surface structure. Several circular protrusions are evenly distributed on the arc-shaped curved surface structure, and the particle size of the circular protrusions gradually increases from the center of the arc-shaped curved surface structure to the periphery.
[0012] As a preferred embodiment, a support frame equivalent in size to the solar cell is provided on the support mechanism. Support ribs are provided on the inner wall of the support frame, and the solar cell is placed on the support frame through the support ribs. The ejection mechanism is provided on one side of the support frame and ejects the solar cell from the other side during ejection.
[0013] As a preferred embodiment, a plurality of support frames are provided on each support mechanism. The plurality of support frames are arranged in a grid form. A convex block is further provided on the support mechanism. The convex block is used for stacking a plurality of support mechanisms. The convex block is provided on the first side surface of the support mechanism, and the first side surface is the side where the solar cell is located after being ejected by the ejection mechanism.
[0014] As a preferred embodiment, a handle is provided on the substrate of the adsorption mechanism. The handle is used for holding the adsorption mechanism for evaporation coating or holding the adsorption mechanism to install the adsorption mechanism on the evaporation coating device.
[0015] The beneficial effects produced by the present invention include: the evaporation coating tooling in the present invention cooperates with the evaporation coating device to complete the evaporation coating process of the thin, fragile solar cell;
[0016] The evaporation coating tooling in the present invention can avoid the problems of being fragile, having occlusion during the evaporation coating process, and incomplete evaporation coating surface in the existing evaporation coating methods;
[0017] The evaporation coating tooling in the present invention makes the suction cup not easily break due to excessive suction force or not firmly adsorb due to too small suction force during the process of adsorbing the solar cell by designing the size and structural characteristics of the suction cup;
[0018] The evaporation coating tooling in the present invention adjusts the suction force and stability of the suction cup through the design structure and size of the gas channel;
[0019] The present invention optimizes the mechanism stability during ejection by designing the ejector pin structure and the structure of the contact end of the ejector pin with the solar cell;
[0020] More detailed technical effects will be described in the specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 Structural schematic diagram of the evaporation coating tooling in the present invention;
[0022] Figure 2 Structural schematic diagram of the evaporation coating device;
[0023] Figure 3 、 Figure 4 Structural schematic diagram of the adsorption mechanism;
[0024] Figure 5 Structural diagram of the convex platform on the adsorption mechanism;
[0025] Figure 6 Schematic diagram of the positional relationship between the adsorption mechanism and the battery chip during adsorption;
[0026] Figure 7 , Figure 8 Schematic diagram of the structure of the ejecting mechanism;
[0027] Figure 9 Schematic diagram of the structure of the second end of the ejector pin;
[0028] Figure 10 Schematic diagram of the structure of the supporting mechanism;
[0029] Figure 11 Schematic diagram of the positional relationship when the supporting mechanisms overlap;
[0030] In the figure, 1 is the supporting mechanism, 101 is the supporting rib, 102 is the convex block, 103 is the supporting frame, 2 is the ejecting mechanism, 201 is the base, 2011 is the bottom plate, 2022 is the middle plate, 2023 is the top plate, 202 is the ejector pin, 2021 is the second end, 2022 is the microtexture, 20221 is the central protrusion, 203 is the ejector pin sleeve, 204 is the spring, 3 is the adsorption mechanism, 301 is the substrate, 302 is the gas channel, 303 is the air outlet, 304 is the first-size convex platform, 305 is the second-size convex platform, 306 is the pressure relief port, 307 is the handle, 4 is the battery chip, 5 is the evaporation source, and 6 is the evaporation device. Specific implementation manners
[0031] The following further elaborates on the present invention in detail with reference to the accompanying drawings and specific embodiments. However, it should be understood that the protection scope of the present invention is not limited by the specific embodiments. The orientation terms such as "upper" and "lower" mentioned in the text are all described based on the Figure 1 placement position. The range values involved are all defaulted to include the endpoint values. For example, if the first size and the second size are set to (2~4):1, it includes 2:1 and 4:1 and all intermediate values.
[0032] The battery chip evaporation tooling in the present invention is as Figure 1 shown, including a supporting mechanism 1, an ejecting mechanism 2, and an adsorption mechanism 3. The supporting mechanism 1 is used to place or store the battery chip 4. The ejecting mechanism 2 is used to eject the battery chip 4 from the supporting mechanism 1 to facilitate the next operation. The adsorption mechanism 3 is used to adsorb the ejected battery chip 4. The battery chip 4 includes a first side and a second side, and the second side is the surface to be evaporated. The adsorption mechanism 3 adsorbs the battery chip 4 through the first side. After adsorbing the battery chip 4, the adsorption mechanism 3 is installed or fixed on the evaporation device 6, so that the second side of the battery chip 4 faces the evaporation source 5. The evaporation device 6 is turned on to deposit a film on the second side, as Figure 2 .
[0033] The adsorption mechanism is as Figure 3 ,Figure 4 As shown in the figure, it includes a substrate 301, a gas channel 302, an air outlet 303, and suction cups. The gas channel 302 is arranged inside the substrate 301 and exists in the form of a flow channel. There are several suction cups, and the several suction cups are distributed on the four sides and two diagonals of a square. The formed square is equivalent to or smaller than the area of the solar cell 4. The suction cups are arranged in the form of bosses 304 and 305. As Figure 5 , the boss is a hollow tube arranged on the substrate 301. The hollow tube communicates with the gas channel 302. A pressure relief port 306 is arranged on the side wall of the hollow tube to prevent the instantaneous pressure at the adsorption port of the boss from being too large. The pressure relief port 306 exists in the form of a notch arranged at the adsorption port of the boss, and the notch communicates the inside of the hollow tube with the external air.
[0034] As Figure 5 , the boss is provided with at least two sizes of bosses, namely a first-size boss 304 and a second-size boss 305. The first size is larger than the second size. Both the first size and the second size refer to the inner diameter of the boss. The inner diameter of the gas channel 302 is the third size. The ratio of the first size: the second size: the third size is (2 - 4):1:(3 - 5). One or more second-size bosses 305 are arranged at intervals between two adjacent first-size bosses 304. The two sizes of bosses cooperate with each other to reasonably distribute the negative pressure. On the one hand, it adapts to the silver grid lines designed on the perovskite solar cell 4. On the other hand, it avoids being fragile due to excessive local negative pressure or poor adsorption due to too small negative pressure. The first-size boss 304 is used to provide the main adsorption force for the adsorption mechanism 3, and the second-size boss 305 assists in adsorbing other areas of the solar cell 4.
[0035] In this embodiment, the first dimension and the second dimension are set to (2 - 4):1, preferably 3.5:1, and a second-dimension boss 305 is provided for every other first-dimension boss 304. In this embodiment, the air flow rate is controlled by controlling the sizes of the two types of bosses, thereby controlling the adsorption pressure. Under the above-mentioned boss size design, the perovskite solar cell 4 can be firmly adsorbed on the adsorption mechanism 3 without causing breakage. If the first dimension and the second dimension are higher than the above ratio, it is easy to cause local breakage of the solar cell 4; if they are smaller than this size, it is easy to cause insecure adsorption. The ratio of the first dimension to the third dimension is (2 - 4):(3 - 5). The fact that the gas channel 302 is wider than the inner diameter width of the boss is conducive to strengthening the suction force at the adsorption port of the boss and increasing stability. If it is higher than the above ratio value, the adsorption force of the boss is insufficient and the adsorption is insecure, and the solar cell 4 is easy to fall off; if it is lower than the above ratio value, the adsorption force is too large and the solar cell 4 is easy to break. The suction cup in this embodiment exists in the form of a boss. On the one hand, it can raise the solar cell 4 to avoid abrasion between the solar cell 4 and the substrate 301. On the other hand, when adsorbing the solar cell 4, it is convenient to relieve pressure through the pressure relief port 306 to make the air flow gentle. In this embodiment, the gas channel 302 can be designed along the distribution path of the suction cup, that is, the boss is designed on the gas channel 302. A handle 307 is provided on the adsorption mechanism 3 in this embodiment. The handle 307 is used to hold the adsorption mechanism 3 for evaporation coating or to hold the adsorption mechanism 3 to install the adsorption mechanism 3 on the evaporation coating device 6. When the adsorption mechanism 3 adsorbs the solar cell 4, the positional relationship with the solar cell 4 is shown in Figure 6 .
[0036] The thimble tooling in this embodiment is as shown in Figure 7 and Figure 8 and includes a base 201, a thimble 202, and a thimble sleeve 203. The base 201 includes a bottom plate 2011 and a top plate 2023. An intermediate plate 2022 is provided between the bottom plate 2011 and the top plate 2023. The thimble 202 is arranged on the bottom plate 2011 through a spring 204. The thimble sleeve 203 is arranged on the top plate 2023. The first end of the thimble 202 is connected to the spring 204, and the second end 2021 passes through the intermediate plate 2022, the top plate 2023, and the thimble sleeve 203 and extends outside the thimble sleeve 203. Of course, the setting method can also be that the first end passes through the thimble sleeve 203, the top plate 2023, and the intermediate plate 2022 to connect the spring 204, and the second end 2021 is placed outside the thimble sleeve 203. The spring 204, the thimble 202, and the thimble sleeve 203 are coaxially arranged. As shown in Figure 10, the second end portion 2021 is an outwardly protruding arc-shaped curved surface structure. This design is beneficial for the ejector pin 202 to gently touch the battery cell 4 to prevent scratching or breaking. Preferably, a micro-texture 2022 is designed on the arc-shaped curved surface structure of the second end portion 2021, which can be circular or semi-circular protrusions or protrusions of other shapes evenly distributed on the arc-shaped curved surface structure. Further preferably, the micro-texture 2022 is a semi-circular protrusion, and the size of the semi-circular protrusion gradually increases from the center to the periphery. Further preferably, several protrusions at the center position and near the center position in the micro-texture 2022 have the same or similar height, and the height of the remaining protrusions gradually decreases as the distance from the central protrusion 20221 increases. Here, the height refers to the height of the vertex of the protrusion when the ejector pin 202 is placed vertically. This design is beneficial for increasing the anti-slip effect of the contact head of the second end portion 2021 on the one hand, and on the other hand, the increase in the particle size of the peripheral protrusions slows down the slope between the center top and the periphery, which is beneficial for increasing the stability of the battery cell 4 on the second end portion 2021.
[0037] In this embodiment, the support mechanism 1 is as Figure 10 and Figure 11 . A number of grids are provided on the support mechanism 1, and each grid corresponds to a support frame 103. Support ribs 101 are provided on the inner wall of the support frame 103, and the battery cell 4 is arranged on the support frame 103 through the support ribs 101. The size of the support frame 103 is equivalent to the size of the battery cell 4. A convex block 102 is provided on the first side surface of the support frame 103 to prevent the battery cell 4 from being touched when multiple support frames 103 are stacked. The ejection mechanism 2 is designed on the second side surface of the support mechanism 1. During use, the ejection mechanism 2 approaches the support frame 103 and ejects the battery cell 4 from the first side surface.
[0038] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.
Claims
1. A battery cell evaporation tool, characterized in that: The device comprises a supporting mechanism, an ejecting mechanism and an adsorption mechanism, wherein the supporting mechanism is used to place a battery cell to be evaporated, the ejecting mechanism is used to eject the battery cell from the supporting mechanism, and the adsorption mechanism is used to adsorb the ejected battery cell onto the adsorption mechanism, the battery cell comprises a first side surface and a second side surface, the adsorption mechanism adsorbs the first side surface of the battery cell, the second side surface is the surface of the battery cell to be evaporated, and the adsorption mechanism cooperates with the evaporation device so that the second side surface faces the evaporation source of the evaporation device; The adsorption mechanism includes a substrate, a gas channel arranged on the substrate, and a suction cup connected to the gas channel. The gas channel is connected to a negative pressure device through an outlet arranged on the substrate. The negative pressure device is used to provide negative pressure for the suction cup. A plurality of suction cups are provided.
2. The cell evaporation tooling according to claim 1, characterized in that: The suction cup includes a first-size suction cup and a second-size suction cup, the diameter of the first-size suction cup is larger than the diameter of the second-size suction cup, the number of the first-size suction cup and the second-size suction cup is the same or different, and two adjacent first-size suction cups are spaced apart by one or more second-size suction cups.
3. The cell evaporation tooling according to claim 2, characterized in that: The suction cup is provided in the form of a boss protruding from the substrate, the boss is a hollow tubular structure and connected to the gas channel, and a pressure relief port is provided at the suction port of the boss; the first-size suction cup and the second-size suction cup correspond to the first-size boss and the second-size boss respectively; The first size and the second size are the inner diameters of the hollow tubular boss, and the first size: the second size is 2:1~4:
1.
4. The cell evaporation tooling according to claim 1, characterized in that: The ejection mechanism includes a base, an ejector pin and an ejector pin sleeve. The base includes a bottom plate and a top plate. The ejector pin is elastically arranged on the bottom plate by a spring. The ejector pin sleeve is arranged on the top plate. The first end of the ejector pin is connected to the spring, and the second end passes through the sleeve and extends outside the sleeve. The second end is an arc-shaped curved surface structure protruding outward. The sleeve, spring and ejector pin are coaxially arranged.
5. The cell evaporation tooling according to claim 4, characterized in that: The ratio of the inner diameter of the sleeve to the outer diameter of the ejector pin is 1.2:1 to 1.5:
1.
6. The cell evaporation tooling according to claim 4, characterized in that: A particle texture is arranged on the arcuate surface structure of the second end. The particle texture is a protrusion arranged on the arcuate surface structure. Several protrusions are evenly distributed on the arcuate surface structure, and the particle size of the protrusion gradually increases from the center of the arcuate surface structure to the periphery.
7. The cell evaporation tooling according to claim 6, characterized in that: The support mechanism is provided with a support frame of a size comparable to that of the battery cell, and support ribs are provided on the inner wall of the support frame, and the battery cell is placed on the support frame through the support ribs; the ejection mechanism is provided on one side of the support frame, and the battery cell is ejected from the other side during ejection.
8. The cell evaporation tooling according to claim 1 or 7, characterized in that: A plurality of support frames are arranged on each support mechanism, and the plurality of support frames are arranged in a grid form. A protrusion is also arranged on the support mechanism, and the protrusion is used for stacking a plurality of support mechanisms. The protrusion is arranged on a first side surface of the support mechanism, and the first side surface is the side where the battery cell is located after being ejected by the ejection mechanism.
9. The cell evaporation tooling according to claim 1, characterized in that: A handle is arranged on the substrate of the adsorption mechanism, and the handle is used for holding the adsorption mechanism for evaporation or holding the adsorption mechanism to install the adsorption mechanism on an evaporation device.
10. The cell evaporation tooling according to claim 1, characterized in that: The distribution area of the plurality of suction cups on the substrate is the four sides and two diagonal lines of a square, and the square is adapted to the shape of the battery sheet.