Film coating support plate of heterojunction battery

Abstract

The invention discloses a heterojunction battery coating support plate, the heterojunction battery comprises heterojunction battery bodies, the coating support plate comprises a support plate base, a plurality of support plate bodies are installed on the support plate base, a turn-over mechanism is installed on the support plate bodies, the turn-over mechanism comprises an installation frame, the heterojunction battery bodies are installed on the installation frame, and the heterojunction battery bodies are installed on the installation frame. The mounting frame is mounted on the carrier plate body, a first driving mechanism for controlling the turn-over mechanism is mounted on the carrier plate base, an adsorption fixing mechanism is mounted on the carrier plate body, and the adsorption fixing mechanism comprises an air pump mounted on the carrier plate base. Compared with the prior art, the film coating support plate of the heterojunction battery has the advantages that a plurality of heterojunction batteries can be fixed on the support plate together, and the support plate is horizontally or vertically placed into a film coating pool for film coating, so that the production efficiency is improved to a certain extent; in the coating process, the heterojunction cells do not need to be manually turned over one by one, the production efficiency is further improved, and the production period is shortened.

Description

Technical Field

[0001] The present invention belongs to the technical field of coating carriers, and specifically relates to a coating carrier for heterojunction batteries. Background Art

[0002] The coating carrier of the heterojunction battery plays a crucial role in the battery manufacturing process. The coating carrier not only supports the manufacturing process of the battery wafers but also directly affects the performance and efficiency of the battery. Common heterojunction battery carriers can only carry one heterojunction battery, that is, only one battery can be coated each time, and the production efficiency is relatively low. To avoid this situation, generally, multiple heterojunction batteries are fixed on the carrier together, and then the carrier is placed horizontally or vertically into the coating bath for coating.

[0003] However, when coating the heterojunction battery, since different film layers need to be deposited on the front and back sides to achieve specific functions, during the coating process, generally, one side needs to be coated first, and then the other side. This process has led to a significant decrease in production efficiency. Low coating efficiency means that it takes longer production time to complete the manufacturing of the battery, thus increasing the production cycle, which may lead to an extension of the product delivery period and an inability to meet market demand, thereby reducing the market competitiveness of the enterprise. It will also affect the brand image and reputation of the enterprise, further weakening the market competitiveness.

[0004] Secondly, when coating one side, the coating material may accidentally deposit on the other side, causing incorrect deposition, damaging the internal structure of the battery, and then leading to a decrease in the light absorption and conversion efficiency of the battery. For consumers who purchase heterojunction batteries with decreased efficiency, they may suffer certain economic losses. And since battery efficiency is one of the key factors in market competition, the decrease in battery efficiency caused by incorrect deposition will not only make the enterprise lose competitiveness in the market. It also means that more energy is wasted in the inefficient power generation process. This undoubtedly increases the social energy cost and exacerbates the environmental pressure.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a coating carrier for heterojunction batteries. Summary of the Invention

[0006] The purpose of the present invention is to provide a coating carrier for heterojunction batteries, which can solve the problems raised in the above background art.

[0007] To achieve the above purpose, the technical solution provided by a specific embodiment of the present invention is as follows:

[0008] A coating carrier plate for a heterojunction battery, the heterojunction battery including a heterojunction battery body, the coating carrier plate including a carrier plate base, a plurality of carrier plate bodies being installed on the carrier plate base, a turning mechanism being installed on the carrier plate body, the turning mechanism including an installation frame, the heterojunction battery body being installed on the installation frame, the installation frame being installed on the carrier plate body, a first driving mechanism for controlling the turning mechanism being installed on the carrier plate base, an adsorption and fixing mechanism being installed on the carrier plate body, the adsorption and fixing mechanism including an air pump installed on the carrier plate base, a three-way pipe being installed at the air inlet of the air pump, the other two passages of the three-way pipe being respectively installed with air collecting structures, a plurality of air suction pipes for adsorbing the front and back sides of the heterojunction battery body being installed on the air collecting structures, a suction cup being installed at one end of the air suction pipe away from the three-way pipe, the suction cup being installed inside the carrier plate body, an electric valve for controlling the connection state of the air collecting structures being installed on the three-way pipe, and a detection structure for determining the state of the electric valve being installed on the carrier plate body.

[0009] In one or more embodiments of the present invention, the detection structure includes two groups of brightness sensors that match the turning mechanism.

[0010] In one or more embodiments of the present invention, the first driving mechanism includes a first gear, the first gear being installed on the installation frame, the outer wall of the first gear being meshed with a first rack, the first rack being slidably connected inside the carrier plate body, a first push rod being installed at one end of the first rack, a first electric hydraulic rod being installed at the bottom of the first push rod, and the first electric hydraulic rod being installed inside the carrier plate base.

[0011] In one or more embodiments of the present invention, the air collecting structure includes an air collecting box.

[0012] In one or more embodiments of the present invention, a limiting plate is installed on one side of the installation frame close to the heterojunction battery body, a threaded rod is installed on one side of the limiting plate, and the threaded rod is threadedly connected to the installation frame.

[0013] In one or more embodiments of the present invention, limiting sliders are symmetrically installed on both sides of the limiting plate, and sliding grooves matching the limiting sliders are formed on the installation frame.

[0014] In one or more embodiments of the present invention, a second push rod is installed below the first gear, a cleaning cotton matching the carrier plate body is installed on the second push rod, and a second driving mechanism matching the cleaning cotton is installed on the carrier plate base.

[0015] In one or more embodiments of the present invention, the second driving mechanism includes a second gear, which is installed at both ends of the cleaning cotton. A second rack is installed below the cleaning cotton and is meshed with the second gear. One end of the second rack is installed with a second electro-hydraulic rod, and the bottom of the second rack is installed with a third electro-hydraulic rod. The second electro-hydraulic rod and the third electro-hydraulic rod are installed in the carrier plate base.

[0016] In one or more embodiments of the present invention, an electric heating tube is installed in the carrier plate body, a medium cavity matching the electric heating tube is opened in the carrier plate body, and a heating medium is installed in the medium cavity.

[0017] In one or more embodiments of the present invention, the heating medium is one or a combination of a graphite sheet, a copper heat conducting plate, and an aluminum heat conducting plate.

[0018] Compared with the prior art, the coating carrier plate for a heterojunction battery of the present invention can fix multiple heterojunction batteries on the carrier plate together, and place the carrier plate horizontally or vertically into a coating pool for coating, which improves the production efficiency to a certain extent; during the coating process, it is not necessary to manually turn over the heterojunction batteries one by one, which further improves the production efficiency, reduces the production cycle, shortens the product delivery period, improves the market competitiveness of the enterprise, the brand image and reputation of the enterprise, and further enhances the market competitiveness; it can also avoid the deposition of coating materials on the other side during the coating of one side to a certain extent, ensure the normal operation of the internal structure of the battery, and guarantee the light absorption and conversion efficiency of the heterojunction battery.

[0019] After the carrier plate body is used multiple times, it can also remove the pollutants accumulated on the surface area of the carrier plate body, such as dust, metal particles, etc. As much as possible, the transfer of these pollutants to the surface of the heterojunction battery body is avoided, which affects the cleanliness and coating quality of the heterojunction battery body. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the overall structure of a coating carrier plate for a heterojunction battery in the first embodiment of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure during the use of the turning mechanism in the first embodiment of the present invention;

[0023] Figure 3 Schematic cross-sectional structure diagram during the use of the turnover mechanism in the first embodiment of the present invention;

[0024] Figure 4 Schematic cross-sectional structure diagram of a coating carrier plate of a heterojunction battery in the first embodiment of the present invention;

[0025] Figure 5 Schematic overall structure diagram of the adsorption and fixation mechanism in the first embodiment of the present invention;

[0026] Figure 6 Schematic partial structure diagram of the adsorption and fixation mechanism in the first embodiment of the present invention;

[0027] Figure 7 Schematic partial structure diagram during the use of the turnover mechanism in the first embodiment of the present invention;

[0028] Figure 8 In the first embodiment of the present invention Figure 7 Enlarged structure diagram at position A;

[0029] Figure 9 Schematic overall structure diagram of the second driving mechanism in the first embodiment of the present invention;

[0030] Figure 10 Schematic cross-sectional structure diagram of the carrier plate body in the first embodiment of the present invention.

[0031] Main reference numeral description:

[0032] 1. Carrier plate base; 101. Carrier plate body; 1011. Medium cavity; 102. Heterojunction battery body; 103. Brightness sensor; 201. First gear; 202. Installation frame; 2021. Slide groove; 203. First rack; 204. First push rod; 205. First electro-hydraulic rod; 206. Limit plate; 2061. Limit slider; 207. Threaded rod; 301. Air pump; 302. Three-way pipe; 303. Suction pipe; 304. Suction cup; 305. Electric valve; 306. Air collecting box; 401. Second push rod; 402. Cleaning cotton; 403. Second gear; 404. Second rack; 405. Second electro-hydraulic rod; 406. Third electro-hydraulic rod; 501. Electric heating tube. Detailed implementation manners

[0033] To enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1 to 4 shown, a coating carrier plate of a heterojunction battery in an embodiment of the present invention includes a carrier plate base 1, and a plurality of carrier plate bodies 101 are installed on the carrier plate base 1. The carrier plate body 101 is the basic part of the coating carrier plate. A plurality of material loading units are provided on one of its sides. The material loading unit is a specific loading area on the carrier plate body for placing workpieces to be coated. Each material loading unit has a loading surface. When different film layers need to be deposited on the front and back sides of the heterojunction battery body 102 to achieve specific functions, it is usually necessary to place the heterojunction battery body 102 on the carrier plate body 101 for fixation, and then transport it to the coating pool for coating. After coating, it is necessary to take out the carrier plate body 101 and the heterojunction battery body 102 from the coating pool and manually turn them over so as to coat the other side of the heterojunction battery body 102.

[0035] As Figures 1 to 4 shown, a turnover mechanism is installed on the carrier plate body 101. The turnover mechanism includes an installation frame 202, and the heterojunction battery body 102 is installed in the installation frame 202. A first driving mechanism for controlling the turnover mechanism is installed on the carrier plate base 1. When it is necessary to turn over the heterojunction battery body 102, the staff controls the installation frame 202 to turn over through the first driving mechanism. The driven installation frame 202 drives a plurality of heterojunction battery bodies 102 to quickly complete the turnover, minimizing the time consumed by manual turnover to a certain extent, thereby improving the production efficiency to a certain extent.

[0036] As Figures 1 to 6 shown, an adsorption and fixation mechanism matching the turnover mechanism is installed on the carrier plate base 1. The adsorption and fixation mechanism can make the connection between the heterojunction battery body 102 and the carrier plate body 101 tighter, and to a certain extent, avoid the deposition of coating materials on the other side during coating on one side.

[0037] Specifically, the adsorption and fixation mechanism includes an air pump 301. The air inlet of the air pump 301 is installed with a three-way pipe 302. The other two passages of the three-way pipe 302 are respectively installed with air collection structures. A number of air suction pipes 303 that respectively adsorb the front and back sides of the heterojunction battery body 102 are installed on the air collection structures. One end of the air suction pipe 303 far from the three-way pipe 302 is installed with a suction cup 304. The suction cup 304 is installed in the carrier plate body 101. An electric valve 305 for controlling the connection state of the air collection structure is installed on the three-way pipe 302. A detection structure for determining the state of the electric valve 305 is installed on the carrier plate body 101. When the detection structure recognizes the light condition, the corresponding electric valve 305 is controlled to open, and the other group of electric valves 305 is closed. The passage formed by the opened electric valve 305, the air collection structure and the air suction pipe 303, with the cooperation of the suction cup 304, adsorbs and fixes the heterojunction battery body 102. Vice versa.

[0038] For example, the a electric valve 305 installed on the a passage of the three-way pipe 302 forms a passage with the corresponding a air collection structure and the a air suction pipe 303 connected to the a air collection structure. When the a brightness sensor 103 detects being blocked by the heterojunction battery body 102, the corresponding a electric valve 305 is opened, and the other electric valve 305 is closed. The air pump 301 adsorbs the heterojunction battery body 102 through the a air collection structure, the a air suction pipe 303 and the a suction cup 304, thereby fixing the heterojunction battery body 102.

[0039] As Figures 1 to 6 shown, the detection structure can select two groups of brightness sensors 103 that match the turning mechanism. When the brightness sensor 103 recognizes that there is no light source in front of the turning mechanism (the light source is blocked by the heterojunction battery body 102), the corresponding electric valve 305 is closed, and the passage formed by the air collection structure controlled by the other group of electric valves 305 adsorbs the heterojunction battery body 102, making the connection between the heterojunction battery body 102 and the carrier plate body 101 closer. To a certain extent, it avoids the wrong deposition caused by the coating material being deposited on the other side when coating one side, resulting in the damage of the internal structure of the battery, and further leading to the decrease of the light absorption and conversion efficiency of the battery.

[0040] As Figure 6 shown, the air collection structure includes an air collection box 306. The air collection box 306 can evenly distribute the suction force applied by the air pump 301 on multiple air suction pipes 303. To a certain extent, it avoids the insufficient suction force of the air suction pipes 303 and the suction cups 304 far from the air pump 301, resulting in the situation that the heterojunction battery body 102 and the carrier plate body 101 cannot be closely attached. It can also effectively prevent the air suction pipes 303 and the suction cups 304 close to the air pump 301 from deforming the heterojunction battery body 102 due to excessive suction force, which affects the support and use of the heterojunction battery body 102.

[0041] As shown Figures 1 to 7 in Figure 1, the first driving mechanism includes a first gear 201, the first gear 201 is installed on the mounting frame 202, the outer wall of the first gear 201 is meshed with a first rack 203, the first rack 203 is slidably connected in the carrier plate body 101, one end of the first rack 203 is installed with a first push rod 204, and the bottom of the first push rod 204 is installed with a first electro-hydraulic rod 205, and the first electro-hydraulic rod 205 is installed in the carrier plate base 1. When it is necessary to flip the heterojunction battery body 102, the first electro-hydraulic rod 205 is started, and the extended first electro-hydraulic rod 205 drives a plurality of first racks 203 to move upward through the first push rod 204. Since the first gear 201 is meshed with the first rack 203, the first gear 201 rotates accordingly. During the rotation of the first gear 201, the mounting frame 202 is driven to rotate, and the mounting frame 202 drives the heterojunction battery body 102 installed on the mounting frame 202 to rotate, thereby turning the mounting frame 202 over. Workers can flip a plurality of heterojunction battery bodies 102 at the same time, which can effectively improve the production efficiency when the production demand is high. At the same time, the flipping operation can be carried out during the process of moving the carrier plate base 1 to a suitable position, further improving the production efficiency.

[0042] As shown Figure 8 in Figure 2, a limiting plate 206 is installed on one side of the mounting frame 202 close to the heterojunction battery body 102, and a threaded rod 207 is installed on one side of the limiting plate 206. The threaded rod 207 is threadedly connected to the mounting frame 202. Workers can rotate the threaded rod 207 with one hand and restrict the rotation of the limiting plate 206 with the other hand, so that the limiting plate 206 approaches the heterojunction battery body 102, thereby fixing the heterojunction battery body 102 to ensure the uniformity and integrity of the coating. To a certain extent, it can avoid the heterojunction battery body 102 falling or shifting during the coating or moving of the heterojunction battery body 102, resulting in uneven, defective or broken coating, which seriously affects the coating quality.

[0043] Furthermore, since heterojunction batteries have different sizes, and these heterojunction batteries of different sizes are applicable to different application scenarios, workers can rotate the threaded rod 207 to make the limiting plate 206 approach the heterojunction battery body 102, thereby fixing the heterojunction battery bodies 102 of different sizes and improving the applicable range of the carrier plate base 1.

[0044] As shown Figures 1 to 8As shown, the limiting sliders 2061 are symmetrically installed on both sides of the limiting plate 206, and the mounting frame 202 is provided with a slide groove 2021 matching the limiting slider 2061. The slide groove 2021 cooperates with the limiting slider 2061 to ensure that the limiting plate 206 moves smoothly toward the heterojunction battery body 102 during the rotation of the threaded rod 207, and at the same time, the heterojunction battery body 102 is prevented from rotating due to the unstable center of gravity during the movement, so that the heterojunction battery body 102 is deformed due to uneven force, thereby affecting the finished product performance of the heterojunction battery body 102.

[0045] like Figures 1 to 9 As shown, a second push rod 401 is installed below the first gear 201, a cleaning cotton 402 matching the carrier body 101 is installed on the second push rod 401, and a second driving mechanism matching the cleaning cotton 402 is installed on the carrier base 1. After repeated use, pollutants such as dust, metal particles, etc. may accumulate on the surface of the carrier body 101. These pollutants may be transferred to the surface of the heterojunction battery body 102, affecting the cleanliness and coating quality of the heterojunction battery body 102. When the staff needs to clean the carrier body 101, the second push rod 401 and the cleaning cotton 402 are moved up and down by the second driving mechanism. During the movement of the cleaning cotton 402, impurities on the surface of the carrier body 101 are removed to improve the performance of the carrier body 101, ensure the quality of the heterojunction battery body 102, and extend the life of the heterojunction battery body 102, providing a strong guarantee for the manufacture and application of the heterojunction battery body 102.

[0046] like Figure 9 As shown, the second driving mechanism includes a second gear 403, the second gear 403 is installed at both ends of the cleaning cotton 402, a second rack 404 meshing with the second gear 403 is installed below the cleaning cotton 402, a second electric hydraulic rod 405 is installed at the bottom of the second rack 404, and the second electric hydraulic rod 405 is installed in the carrier base 1. In order to prevent impurities from being adsorbed on the cleaning cotton 402 during the coating process as much as possible, affecting the cleaning effect of the cleaning cotton 402 on the carrier body 101, the cleaning cotton 402 is stored in the storage groove on the surface of the carrier base 1 in the initial state.

[0047] like Figures 1 to 9As shown in the figure, when the staff needs to clean the carrier plate body 101, first start the second electro-hydraulic rod 405. The elongation of the second electro-hydraulic rod 405 drives the movement of the second rack 404. Since the second rack 404 is meshed and connected with the second gear 403, and the second gear 403 is installed on the second push rod 401, the second gear 403 and the second push rod 401 rotate as the second rack 404 moves. The rotation of the second push rod 401 drives the rotation of the cleaning cotton 402 so that the cleaning cotton 402 faces the second push rod 401. Subsequently, start the third electro-hydraulic rod 406. The elongation of the third electro-hydraulic rod 406 drives the upward movement of the second rack 404 and the second gear 403, thereby moving the second push rod 401 and the cleaning cotton 402 upward to remove the impurities on the surface of the carrier plate body 101.

[0048] Further optimized, a detachable structure (not shown in the figure) is installed between the second push rod 401 and the cleaning cotton 402. When the cleaning cotton 402 is damaged or accumulates a large amount of impurities, affecting the cleaning effect of the carrier plate body 101, the staff can take out and replace the cleaning cotton 402.

[0049] As Figures 1 to 10 shown in the figure, an electric heating tube 501 is installed in the carrier plate body 101. A medium cavity 1011 matching the electric heating tube 501 is opened in the carrier plate body 101, and a heating medium is installed in the medium cavity 1011. Since the heat is mainly provided by the electric heating tube 501, the heat is higher at the position close to the electric heating tube 501 and lower at the position far from the electric heating tube 501. The heating medium can effectively transfer the heat generated by the electric heating tube 501 to the entire carrier plate body 101 to a certain extent, making the heat distribution relatively uniform and reducing the phenomenon of local overheating or overcooling. Ensure that the heat is fully utilized, improve the overall heating efficiency, and reduce the waste of energy.

[0050] As Figures 1 to 10 shown in the figure, the heating medium can be selected from one or a combination of graphite sheets, copper heat-conducting plates, and aluminum heat-conducting plates.

[0051] The models of the brightness sensor 103, the first electric hydraulic rod 205, the air pump 301, the second electric hydraulic rod 405, the third electric hydraulic rod 406 and the electric heating tube 501 can be selected from BH1750, DYT2500, 320-03PM, NKLA22, NKLA22 and Ni-Cr 80 / 20, and users can also choose different models according to actual market demand. The brightness sensor 103, the first electric hydraulic rod 205, the air pump 301, the second electric hydraulic rod 405, the third electric hydraulic rod 406 and the electric heating tube 501 are electrically connected to an external power supply, and since the brightness sensor 103, the first electric hydraulic rod 205, the air pump 301, the second electric hydraulic rod 405, the third electric hydraulic rod 406 and the electric heating tube 501 are common knowledge to those skilled in the art, the specific structure, switch mode and working principle will not be described in detail here.

[0052] During use, the staff can flip multiple heterojunction battery bodies 102 at the same time to improve the coating efficiency of the heterojunction battery body 102, and can also tightly connect the heterojunction battery body 102 with the carrier body 101, to a certain extent avoiding the coating material from being deposited on the other side when coating on one side, resulting in erroneous deposition.

[0053] When the staff needs to clean the surface of the carrier body 101 and try to avoid the transfer of contaminants on the carrier body 101 to the surface of the heterojunction battery body 102 to affect the cleanliness and coating quality of the heterojunction battery body 102, the cleaning cotton 402 can be moved by the second driving mechanism to remove impurities on the surface of the carrier body 101.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0055] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A coating carrier for a heterojunction battery, characterized in that, The heterojunction battery includes a heterojunction battery body, and the coating carrier plate includes: A carrier plate base, on which a number of carrier plate bodies are installed; A turning mechanism, which includes a mounting frame. The heterojunction battery body is installed on the mounting frame, the mounting frame is installed on the carrier plate body, and a first driving mechanism for controlling the turning mechanism is installed on the carrier plate base; An adsorption and fixing mechanism, which includes an air pump installed on the carrier plate base. The air inlet of the air pump is installed with a three-way pipe, and the other two passages of the three-way pipe are respectively installed with air collecting structures; A number of air suction pipes for adsorbing the front and back sides of the heterojunction battery body are installed on the air collecting structure. The end of the air suction pipe far from the three-way pipe is installed with a suction cup, the suction cup is installed inside the carrier plate body, an electric valve for controlling the connection state of the air collecting structure is installed on the three-way pipe, and a detection structure for determining the state of the electric valve is installed on the carrier plate body.

2. The coating carrier of a heterojunction battery according to claim 1, characterized in that, The detection structure includes two groups of brightness sensors that match the turning mechanism.

3. A coating carrier for a heterojunction battery according to claim 1, characterized in that, The first driving mechanism includes a first gear installed on the mounting frame. The outer wall of the first gear is meshed with a first rack, the first rack is slidably connected inside the carrier plate body, one end of the first rack is installed with a first push rod, and the bottom of the first push rod is installed with a first electro-hydraulic rod, and the first electro-hydraulic rod is installed inside the carrier plate base.

4. A coating carrier for a heterojunction battery according to claim 1, characterized in that, The air collecting structure includes an air collecting box.

5. A coating carrier for a heterojunction battery according to claim 1, wherein A limiting plate is installed on one side of the mounting frame close to the heterojunction battery body, and a threaded rod is installed on one side of the limiting plate, and the threaded rod is threadedly connected to the mounting frame.

6. The coating carrier of a heterojunction battery according to claim 5, characterized in that, Limiting sliders are symmetrically installed on both sides of the limiting plate, and sliding grooves matching the limiting sliders are opened on the mounting frame.

7. A coating carrier for a heterojunction battery according to any one of claims 1-6, characterized in that A second push rod is installed below the first gear, a cleaning cotton matching the carrier plate body is installed on the second push rod, and a second driving mechanism matching the cleaning cotton is installed on the carrier plate base.

8. A coating carrier for a heterojunction battery according to claim 7, characterized in that, The second driving mechanism includes a second gear installed at both ends of the cleaning cotton. A second rack frame meshed with the second gear is installed below the cleaning cotton. One end of the second rack frame is installed with a second electro-hydraulic rod, and the bottom of the second rack frame is installed with a third electro-hydraulic rod. The second electro-hydraulic rod and the third electro-hydraulic rod are installed inside the carrier plate base.

9. A coating carrier for a heterojunction battery according to any one of claims 1-6, characterized in that, An electric heating tube is installed inside the carrier plate body, a medium cavity matching the electric heating tube is opened inside the carrier plate body, and a heating medium is installed in the medium cavity.

10. The coating carrier of a heterojunction battery according to claim 9, characterized in that The heating medium is one or a combination of a graphite sheet, a copper heat conducting plate, and an aluminum heat conducting plate.

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