Repair device for battery string

Abstract

The utility model relates to a repairing device for a battery string. The repairing device comprises a shell, the shell comprises a working plate and a hollow containing cavity, and the working plate is provided with a ventilation hole which is in air communication with the containing cavity; the air supply assembly is arranged on the shell and used for generating air flow guided to the ventilation hole; the heating assembly is arranged in the containing cavity and used for heating the air flow; the buffer heat insulation pad is arranged on the side, away from the containing cavity, of the working plate, and a through hole communicated with the ventilation hole is formed in the buffer heat insulation pad, so that when the buffer heat insulation pad abuts against a bearing film of the battery string, heated air flow can sequentially pass through the ventilation hole and the through hole and act on the bearing film, and the battery string is heated. Therefore, the bearing film and the battery pieces of the battery string are bonded together. According to the utility model, the bearing film and the repaired battery piece can be conveniently bonded together, the bearing pressure of the battery piece is reduced, the battery piece is prevented from being broken, and the repairing quality of the battery string is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic power generation, in particular to a repairing device for a cell string. BACKGROUND

[0002] A solar cell (or cell piece) is a kind of photoelectric semiconductor element that can convert sunlight into electric energy. A plurality of cell pieces are connected to each other by welding ribbons to form a cell string to improve output voltage.

[0003] The prior art has developed a technical solution for fixing cell pieces and welding ribbons by a carrier film (or covering film). The carrier film is usually an EVA adhesive film, which is a thermosetting material and has high adhesion after heating. In the processing, the carrier film is first placed on the corresponding cell piece, and then the carrier film is heated to bond the cell pieces and the welding ribbons between the cell pieces to the carrier film, thereby realizing the connection between the cell pieces and the welding ribbons.

[0004] During assembly or use, the cell pieces may need to be repaired and replaced due to damage, failure, etc. When replacing, the welding ribbons between the cell piece to be replaced (or bad piece) and the cell pieces connected thereto need to be cut, the bad piece is replaced with a new cell piece, and finally the welding ribbons between the new cell piece and the cell pieces adjacent thereto are welded. In this process, part of the carrier film on the cell pieces connected to the bad piece also needs to be torn off to better connect the welding ribbons and the welding ribbons between them. Finally, the torn part of the carrier film is pasted back to the cell piece. However, the prior art usually uses a soldering iron to point and weld the carrier film around the cell piece. This method not only cannot effectively fix the welding ribbons and the cell pieces, and is prone to problems such as welding ribbon deviation after lamination, but also the soldering iron is prone to cause the cell piece to crack when it is used to point and weld the carrier film.

[0005] Therefore, there is a need in the art for a new technical solution to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] To solve or improve the technical problem that the repair device for the battery string in the prior art is difficult to guarantee the repair quality, the utility model provides a kind of repair device for battery string.The repair device includes: shell, the shell includes working plate and hollow accommodating cavity, is equipped with the vent hole that is formed air communication with the accommodating cavity on the working plate;Air supply assembly, the air supply assembly is arranged on the shell, for generating the air flow that is directed to the vent hole;Heating assembly, the heating assembly is arranged in the accommodating cavity, for heating the air flow;And buffer heat insulation pad, the buffer heat insulation pad is arranged on the side of the working plate away from the accommodating cavity, and is equipped with the through hole that is communicated with the vent hole on the buffer heat insulation pad, so that when the buffer heat insulation pad is abutted on the load film of the battery string, heated the air flow can pass through the vent hole and the through hole in turn and act on the load film, to bond the load film with the battery piece of the battery string on the load film.

[0007] Those skilled in the art can understand that the utility model provides a kind of repair device for battery string, including shell, air supply assembly, heating assembly and buffer heat insulation pad.Wherein, the shell provides suitable installation area for air supply assembly, heating assembly and buffer heat insulation pad.Air supply assembly is arranged on the shell, to generate the air flow that is directed to the vent hole on the working plate of shell.Heating assembly is arranged in the accommodating cavity of shell, to generate heat for air flow.Buffer heat insulation pad is arranged on the side of working plate away from accommodating cavity (i.e. located outside the shell), and is provided with the through hole that is communicated with the vent hole on the buffer heat insulation pad.Therefore, when the load film needs to be refixed on the battery piece, the buffer heat insulation pad can be directly abutted on the load film, and heating assembly and air supply assembly work, to generate flowing hot air flow.These hot air flow can act on the load film by vent hole and through hole, to make the load film produce strong adhesion, to bond the load film on the battery piece.In addition, the setting of buffer heat insulation pad can ensure the uniformity of force applied on the battery piece by repair device, to avoid the hidden crack or damage of battery piece.Further, the through hole that is communicated with the vent hole is provided on the buffer heat insulation pad, to make heat act on part of load film, to realize local heating and fixing, to improve fixing efficiency, to avoid the load film that does not need heating to be heated again to appear drumming.Further, compared with other heating methods (such as soldering iron), the utility model uses air as heat transfer medium, to realize uniform heating, to avoid damage to load film and battery piece, to guarantee the quality of battery string, to improve repair quality.

[0008] In the above preferred technical solutions of the repair device for battery string, the working plate is the bottom plate of the shell.Through the above setting, the load film and battery piece can be compressed by gravity of repair device self weight, to improve bonding efficiency.

[0009] In the preferred technical scheme of the above-mentioned repair device for battery string, the ventilation hole is located at one side of the bottom plate along the width direction of the bottom plate; and / or the ventilation hole is aligned with the through hole; and / or the ventilation hole is provided with a plurality of ventilation holes, the plurality of ventilation holes are arranged at intervals along the length direction of the bottom plate, and the through hole is provided in one-to-one correspondence with the ventilation hole; and / or the buffer heat insulation pad is aligned with the bottom plate; and / or the buffer heat insulation pad is adapted to be aligned with the bearing film. The plurality of ventilation holes arranged at one side of the bottom plate and at intervals along the length direction can conveniently uniformly heat the bearing film torn along the length direction. Further, the buffer heat insulation pad is arranged to be aligned with the bottom plate, which can facilitate positioning of the bottom plate and the buffer heat insulation pad. Further, the buffer heat insulation pad is arranged to be aligned with the bearing film, which can conveniently and uniformly abut the buffer heat insulation pad against the bearing film, ensuring high repair quality. Further, the ventilation hole is aligned with the through hole in one-to-one correspondence, which can make the air pass through the ventilation hole and the through hole with small wind resistance, improving the heating efficiency.

[0010] In the preferred technical scheme of the above-mentioned repair device for battery string, the length of the bottom plate is 210 mm, and the width of the bottom plate is 105 mm, so as to match the battery piece of a conventional size.

[0011] In the preferred technical scheme of the above-mentioned repair device for battery string, the repair device further comprises a temperature sensor arranged in the accommodating cavity, for detecting the temperature of the air flow. The arrangement of the temperature sensor can detect the temperature of the air flow in the shell in real time, automatically and accurately, facilitating accurate control.

[0012] In the preferred technical scheme of the above-mentioned repair device for battery string, the repair device further comprises a controller in communication connection with the air supply assembly, the heating assembly and the temperature sensor respectively; and / or a display module for displaying the temperature value detected by the temperature sensor and / or the heating power value of the heating assembly. The arrangement of the controller can establish communication connection between the air supply assembly, the heating assembly and the temperature sensor, facilitating automatic control. Further, the arrangement of the display module can conveniently display the data such as the temperature value detected by the temperature sensor and the heating power value of the heating assembly, facilitating observation and adjustment by the user.

[0013] In the preferred technical scheme of the above-mentioned repair device for battery string, the shell comprises a top plate opposite to the bottom plate, and the repair device further comprises a handle provided on the top plate. The arrangement of the handle can provide a suitable holding area for the user or other tools, facilitating adjustment of the position of the repair device to better improve the repair efficiency.

[0014] In the preferred technical scheme of the above-mentioned repair device for battery string, the air supply assembly comprises a fan arranged on the top plate. Arranging the fan on the top plate of the housing not only facilitates arrangement, but also facilitates observation of the actual operation of the fan.

[0015] In the preferred technical scheme of the above-mentioned repair device for battery string, a plurality of fans are arranged at intervals along the length direction of the top plate, so as to improve the flow speed and uniformity of the generated air flow.

[0016] In the preferred technical scheme of the above-mentioned repair device for battery string, the heating assembly comprises a plurality of heating pipes arranged at intervals along the width direction of the housing; and / or the material of the buffer heat insulation pad is silica gel. The arrangement of the plurality of heating pipes can improve the heating speed and uniformity of the hot air flow. In addition, the buffer heat insulation pad made of silica gel has good heat insulation performance and shock absorption performance, which can not only avoid heat conduction to the part of the bearing film that does not need to be heated, but also effectively protect the battery sheet and prevent the battery sheet from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0017] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0018] Figure 1 is an external structure schematic diagram of an embodiment of the repair device for battery string of the present application;

[0019] Figure 2 is an internal structure schematic diagram of an embodiment of the repair device for battery string of the present application;

[0020] Figure 3 is a structure schematic diagram of an embodiment of the battery string of the repair device for battery string of the present application.

[0021] LIST OF REFERENCE NUMERALS

[0022] 100, repair device; 110, shell; 111, bottom plate; 1111, vent hole; 112, top plate; 113, side plate; 120, air supply assembly; 121, fan; 1211, first fan, 1212, second fan; 1213, third fan; 1214, fourth fan; 130, heating assembly; 131, first heating pipe; 132, second heating pipe; 133, third heating pipe; 134, fourth heating pipe; 140, buffer heat insulation pad; 141, through hole; 150, temperature sensor; 160, display module; 170, handle; 200, battery string; 210, battery piece, 211, first battery piece; 212, second battery piece; 213, third battery piece; 220, carrier film; 221, first carrier film; 222, second carrier film; 223, third carrier film; 230, solder strip; 231, first solder strip; 232, second solder strip; 233, third solder strip, 234, fourth solder strip. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.

[0024] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the direction or positional relationship of the terms based on the direction or positional relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the present application.

[0025] In addition, it should also be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. 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.

[0026] In order to solve or improve the technical problem that the repair device for the battery string in the prior art is difficult to guarantee the repair quality, the utility model provides a kind of repair device 100 for battery string. The repair device 100 includes: shell 110, shell 110 includes working plate and hollow accommodating cavity, and air communication is formed with accommodating cavity on working plate and is equipped with vent hole 1111;Air supply assembly 120, air supply assembly 120 is arranged on shell 110, for generating the air flow of the direction vent hole 1111;Heating assembly 130, heating assembly 130 is set in accommodating cavity, for heating air flow;And buffer heat insulation pad 140, buffer heat insulation pad 140 is arranged on the side of working plate away from accommodating cavity, and through hole 141 is equipped with the communication with vent hole 1111 on buffer heat insulation pad 140, so that when buffer heat insulation pad 140 is abutted on the bearing film 220 of battery string 200, heated air flow can pass through vent hole 1111 and through hole 141 in turn and act on bearing film 220, to adhere bearing film 220 with the battery piece 210 of battery string 200.

[0027] Figure 1 It is the external structure schematic diagram of the embodiment of the repair device for battery string of the utility model; Figure 2 It is the internal structure schematic diagram of the embodiment of the repair device for battery string of the utility model. Referring to Figure 1 And Figure 2In one or more embodiments, the repair device 100 for a battery string of the present invention includes components such as a housing 110, an air supply assembly 120, a heating assembly 130, and a buffer and thermal insulation pad 140. The housing 110 can provide a suitable installation area for the air supply assembly 120, the heating assembly 130, and the buffer and thermal insulation pad 140. In one or more embodiments, the housing 110 has a substantially rectangular parallelepiped shape. Specifically, the housing 110 includes a bottom plate 111 and a top plate 112 opposite to each other, and a side plate 113 arranged between the bottom plate 111 and the top plate 112. The bottom plate 111, the top plate 112, and the side plates 113 together form a substantially hollow accommodating cavity to accommodate components such as the air supply assembly 120 and the heating assembly 130. Alternatively, the housing 110 can also be set to other suitable shapes, such as a cube. In one or more embodiments, the bottom plate 111 is a working plate that can be opposite to the battery cell 210. The size of the bottom plate 111 can match the carrier film 220 of the battery cell 210. For example, the length of the bottom plate 111 is 210 mm, and the width of the bottom plate 111 is 105 mm. Alternatively, the working plate can also be set as the top plate 112 or any side plate 113. Ventilation holes 1111 that form air communication with the accommodating cavity are provided on the working plate. The shape of the ventilation holes 1111 can be, but not limited to, circular, square, etc. There are multiple ventilation holes 1111. In one or more embodiments, the number of ventilation holes 1111 is specifically 34. The 34 ventilation holes 1111 are located on one side of the bottom plate 111 along its width direction and are arranged at intervals along its length direction. Based on Figure 2 In the illustrated orientation, ventilation holes 1111 are located on the front side of base plate 111 and are spaced approximately in the left-right direction. Alternatively, ventilation holes 1111 may be located at other suitable locations on base plate 111, such as on the rear side of base plate 111 and spaced approximately in the left-right direction. Alternatively, ventilation holes 1111 may be provided in a suitable number greater or less than 34, such as 33, 35, etc.

[0028] like Figure 2 As shown, the air supply assembly 120 is arranged on the shell 110, and is used to generate an air flow that guides the ventilation holes 1111. In one or more embodiments, the air supply assembly 120 includes a fan 121 arranged on the top plate 112. The fan 121 is directly fixed on the top plate 112, which is convenient for arrangement and convenient for observing the operating status of the fan 121. Alternatively, the fan 121 can also be arranged in the accommodating cavity, and an inlet is provided at a suitable position of the shell 110 (for example, on the top plate 112 or the side plate 113). The type of fan 121 is not limited, such as an axial flow fan 121, a cross-flow fan 121, etc. In one or more embodiments, four fans 121 are arranged on the top plate 112 at intervals from each other along the length direction of the top plate 112. Specifically, based on Figure 2The first fan 1211, the second fan 1212, the third fan 1213 and the fourth fan 1214 are arranged on the top plate 112 in the left-right direction at intervals from each other in the illustrated orientation. Alternatively, the fans 121 can also be provided in other suitable numbers more or less than 4, such as 3, 5, etc. Alternatively, the arrangement positions of the fans 121 can also be adjusted according to actual needs. The provision of multiple fans 121 can improve the flow speed of the air flow and also improve the flow uniformity of the air flow.

[0029] As shown in Figure 2 The heating assembly 130 is arranged in the accommodation cavity for heating the air flow. In one or more embodiments, the heating assembly 130 comprises four heating pipes arranged at intervals from each other in the width direction of the housing 110. Specifically, based on the orientation shown in Figure 2 The first heating pipe 131, the second heating pipe 132, the third heating pipe 133 and the fourth heating pipe 134 are arranged at intervals from each other in the front-rear direction and each extends in the left-right direction. Alternatively, the number of heating pipes can also be provided in other suitable numbers more or less than 4, such as 3, 5, etc. The provision of multiple heating pipes can quickly and effectively heat the air flow and also improve the uniformity of heating. Alternatively, the heating assembly 130 can also be provided as a heat pump heater, a PTC heater or other suitable heating device.

[0030] As shown in Figure 2 The buffer heat insulation pad 140 is arranged on the side of the work plate away from the accommodation cavity. Based on Figure 2The cushioning and heat insulation pad 140 is arranged on the lower side of the bottom plate 111. In one or more embodiments, the cushioning and heat insulation pad 140 is aligned with the bottom plate 111. In other words, the size and shape of the cushioning and heat insulation pad 140 are the same as those of the bottom plate 111, so that the cushioning and heat insulation pad 140 can be fixed on the bottom plate 111 in a regular manner. In one or more embodiments, the length of the cushioning and heat insulation pad 140 is 210 mm, and the width of the cushioning and heat insulation pad 140 is 105 mm, so as to match the conventional battery sheet 210. The fixing manner between the cushioning and heat insulation pad 140 and the working plate can be, but is not limited to, bonding, bolting, clamping, etc. The through hole 141 is arranged on the cushioning and heat insulation pad 140 and is aligned with the ventilation hole 1111. The through hole 141 is arranged in one-to-one correspondence with the ventilation hole 1111, so that the air flow resistance is small when the air passes through the ventilation hole and the through hole, and the heating efficiency is improved. Through the above arrangement, when the air supply assembly 120 and the heating assembly 130 in the repair device 100 are operated, the cushioning and heat insulation pad 140 can abut against the carrier film 220 of the battery sheet 210. The heated air flow can pass through the ventilation hole 1111 and the through hole 141 corresponding to the ventilation hole 1111 in sequence, so as to transmit heat to the carrier film 220 on the part opposite to the through hole 141. In this way, the carrier film 220 can be conveniently bonded on the battery sheet 210, and the cushioning and heat insulation pad 140 can buffer the pressure on the battery sheet 210, so as to avoid damaging the battery sheet 210, and avoid heat conduction to the part of the carrier film 220 which does not need to be heated, thereby preventing the phenomenon of secondary heating and drumming. It can be understood that, in the state that the carrier film is bonded with the battery sheet, when the carrier film is heated again (secondary heating of the carrier film), the glue of the carrier film reacts chemically, and bubbles appear between the carrier film and the battery sheet. Such bubbles can cause poor bonding between the carrier film and the battery sheet, thereby reducing the photoelectric conversion efficiency of the battery sheet. The material of the cushioning and heat insulation pad 140 can be, but is not limited to, silica gel, rubber, etc., so as to have good heat insulation performance and shock absorption performance.

[0031] As shown in Figure 2 In one or more embodiments, the repair device 100 further comprises a temperature sensor 150 arranged in the accommodating cavity, for detecting the temperature of the air flow. In one or more embodiments, the temperature sensor 150 is arranged close to the ventilation hole 1111, so as to ensure the reliability of the detection result. Alternatively, the temperature sensor 150 can also be arranged at other suitable positions of the accommodating cavity. The number of temperature sensors 150 can be set to be multiple, so as to further improve the reliability of the detection structure.

[0032] In one or more embodiments, the repair device 100 further comprises a controller (not shown in the figures). The controller is communicatively connected with the air supply assembly 120, the heating assembly 130 and the temperature sensor 150, so as to facilitate automatic control. The communication connection can be wired connection, wireless connection, etc. The controller is pre-installed with a computer control program, so as to conveniently control the air supply amount of the air supply assembly 120 and the heating power of the heating assembly 130 according to the temperature value measured by the temperature sensor 150.

[0033] As shown in Figure 1 , in one or more embodiments, the repair device 100 further comprises a display module 160. The display module 160 is used to display the temperature value detected by the temperature sensor 150 and the heating power value of the heating assembly 130, so that the user can conveniently obtain and adjust the working parameters of the repair device 100. The display module 160 can be a touch liquid crystal screen.

[0034] As shown in Figure 1 and Figure 2 , in one or more embodiments, the repair device 100 further comprises a handle 170 arranged on the top plate 112 of the housing 110. The arrangement of the handle 170 can provide a suitable holding area for the user or other tools, so as to facilitate the adjustment of the position of the repair device 100, thereby improving the repair efficiency. In one or more embodiments, the handle 170 has a substantially U-shaped shape. Alternatively, the handle 170 can also be arranged in a semicircular shape, an arc shape or other suitable shapes. Alternatively, the handle 170 can also be arranged on other suitable positions of the housing 110, such as arranged on the side plate 113, etc.

[0035] Figure 3 is a structural schematic view of an embodiment of the battery string of the repair device for the battery string of the utility model. As shown in Figure 3 , in one or more embodiments, the battery string 200 comprises three battery pieces 210 spaced apart from each other along the left-right direction, which are a first battery piece 211, a second battery piece 212 and a third battery piece 213 in sequence. Each battery piece 210 is fixed with a bearing film 220. That is, the first battery piece 211 is fixed with a first bearing film 221, the second battery piece 212 is fixed with a second bearing film 222, and the third battery piece 213 is fixed with a third bearing film 223. Based on Figure 3In the illustrated orientation, the left side of the first cell 211 has a plurality of first welding ribbons 231 spaced apart along its length for connection to the cell 210 to its left (not shown). The right side of the first cell 211 has a plurality of second welding ribbons 232 spaced apart along its length for connection to the cell 210 to its right (i.e., the second cell 212). Correspondingly, the right side of the second cell 212 has a plurality of third welding ribbons 233 spaced apart along its length for connection to the cell 210 to its right (i.e., the third cell 213). Correspondingly, the right side of the third cell 213 has a plurality of fourth welding ribbons 234 spaced apart along its length for connection to the cell 210 to its right (not shown). Alternatively, the number of cell 210 may be any other suitable number, greater or less than three, such as two or four.

[0036] Continue to see Figure 3 Taking the second battery cell 212 as an example, when the second battery cell 212 is damaged, faulty, etc. and needs to be replaced, first follow the steps below: Figure 3 Cut the second welding ribbon 232 between the second battery cell 212 and the first battery cell 211 in the direction of the dotted line L1 shown in FIG. Figure 3 Cut the third welding ribbon 233 between the second battery cell 212 and the third battery cell 213 in the direction of the dotted line L2 shown; remove the second battery cell 212; then, remove the right side of the first carrier film 221 (as shown in FIG. Figure 3 The first battery cell 211 is peeled off from the first battery cell 211 to expose the remaining second welding ribbon 232; then, the welding ribbon on the left side of the new second battery cell 212 is connected to the second welding ribbon 232 through a welding process. At this time, the first carrier film 221 is separated from the first battery cell 211 and the second welding ribbon 232 in the A area. Therefore, the user can move the rework device 100 of the present invention to the first carrier film 221 through the handle 170, and align the buffer insulation pad 140 on the working plate with the first carrier film 221, while the ventilation holes 1111 on the working plate are positioned in the A area of ​​the first carrier film 221. Then, by controlling the air supply component 120 and the heating component 130 of the rework device 100 to operate with appropriate parameters, a uniform hot air flow is generated. These air flows in turn pass through the ventilation holes 1111 on the working plate and the through holes 141 on the buffer and thermal insulation pad 140 to transfer heat to the A area of ​​the first carrier film 221, thereby locally heating the A area of ​​the first carrier film 221, and then re-bonding the second welding ribbon 232 and the first battery cell 211 to the first carrier film 221.

[0037] Continue to see Figure 3After the old second battery cell 212 and the second carrier film 222 on the left side of the third battery cell 213 are removed, part of the third welding ribbon 233 is exposed. Then, the right side of the second carrier film 222 on the new second battery cell 212 (such as Figure 3 The exposed solder ribbon 230 is then peeled off (see region B shown), and the exposed solder ribbon 230 is connected to the third solder ribbon 233 through a welding process. At this point, the second carrier film 222 is also separated from the second cell 212 and the third solder ribbon 233 in region B. Accordingly, the user can use the handle 170 to move the rework device 100 of the present invention onto the second carrier film 222, align the buffer and thermal insulation pad 140 on the work plate with the second carrier film 222, and position the ventilation holes 1111 on the work plate within region B of the second carrier film 222. Then, by controlling the air supply assembly 120 and heating assembly 130 of the rework device 100 to operate at appropriate parameters, a uniform flow of hot air is generated. This air flow, in turn, transfers heat to the second carrier film 222 through the ventilation holes 1111 on the work plate and the through-holes 141 on the buffer and thermal insulation pad 140, thereby locally heating region B of the second carrier film 222 and rebonding the third solder ribbon 233 and the second cell 212 to the second carrier film 222.

[0038] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A repair device for a battery string, characterized in that: The rework device comprises: A housing, the housing comprising a working plate and a hollow accommodating cavity, wherein a ventilation hole is provided on the working plate to form air communication with the accommodating cavity; an air supply assembly, the air supply assembly being arranged on the housing and configured to generate an air flow directed toward the ventilation holes; a heating assembly, the heating assembly being disposed in the accommodating cavity and configured to heat the air flow; and A buffer thermal insulation pad is arranged on a side of the working plate away from the accommodating cavity, and is provided with a through hole connected to the ventilation hole, so that when the buffer thermal insulation pad is against the supporting film of the battery string, the heated air flow can pass through the ventilation hole and the through hole in sequence and act on the supporting film, so as to bond the supporting film to the battery cells of the battery string.

2. The repair device for a battery string according to claim 1, characterized in that: The working plate is the bottom plate of the shell.

3. The repair device for a battery string according to claim 2, characterized in that: The ventilation hole is located on one side of the bottom plate along its width direction; and / or The ventilation holes are aligned with the through holes; and / or There are a plurality of ventilation holes, the plurality of ventilation holes are spaced apart along the length direction of the bottom plate, and the through holes are arranged in a one-to-one correspondence with the ventilation holes; and / or The buffer and thermal insulation pad are aligned with the bottom plate; and / or The buffer and thermal insulation pad are suitable for being aligned with the carrier film.

4. The repair device for a battery string according to claim 3, characterized in that: The length of the bottom plate is 210 mm, and the width of the bottom plate is 105 mm.

5. The repair device for a battery string according to claim 1, characterized in that: The rework device further comprises: A temperature sensor is arranged in the accommodating cavity to detect the temperature of the air flow.

6. The repair device for a battery string according to claim 5, characterized in that: The rework device further comprises: a controller, the controller being communicatively connected to the air supply assembly, the heating assembly, and the temperature sensor respectively; and / or A display module is used to display the temperature value detected by the temperature sensor and / or the heating power value of the heating component.

7. The repair device for a battery string according to claim 2, characterized in that: The housing includes a top plate opposite to the bottom plate, and the rework device further includes a handle provided on the top plate.

8. The repair device for a battery string according to claim 7, characterized in that: The air supply assembly includes a fan arranged on the top plate.

9. The repair device for a battery string according to claim 8, characterized in that: The plurality of fans are arranged spaced apart from each other along a length direction of the top plate.

10. The repair device for a battery string according to claim 1, characterized in that: The heating assembly includes a plurality of heating tubes spaced apart from each other along the width direction of the housing; and / or The material of the buffer and heat insulation pad is silica gel.

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