Correcting device

Abstract

The utility model discloses a correcting device which comprises a welding correcting assembly used for welding and transporting sheet-shaped workpieces, the welding correcting assembly comprises at least one welding correcting unit corresponding to the sheet-shaped workpieces, and each welding correcting unit comprises a welding heating element, a first adsorption mechanism and a first flattening mechanism; the welding heating element is used for providing a heat source when the sheet-shaped workpiece is welded, the first adsorption mechanism is used for adsorbing the sheet-shaped workpiece, and the first flattening mechanism is used for applying downward pressing acting force to the front face of the sheet-shaped workpiece. In the embodiment of the utility model, when the sheet-shaped workpiece does not warp or is warped, the first flattening mechanism continuously applies the downward pressing acting force to the front surface of the sheet-shaped workpiece, so that the back contact battery piece has a trend of sinking towards the back surface, and the sheet-shaped workpiece is corrected; and therefore, sheet workpiece warping caused by welding shrinkage is prevented in advance, and the correction effect is good.

Description

Technical Field

[0001] The utility model relates to the field of battery sheet correction, in particular to a correction device. Background Art

[0002] In the back-contact cell, both the positive and negative electrodes are located on the back. After the back-contact cell is prepared, multiple back-contact cells need to be connected by welding to form a battery string. Since the solder strips are all located on the back of the cell, the cooling and shrinkage of the solder strips after welding will cause the cell to warp. The warping of the cell will cause defects such as abnormal layout and abnormal spacing after lamination in subsequent processes.

[0003] At present, after multiple battery cells are welded and cooled, a warping correction device is used to apply a reverse force to the battery cells to correct the warping of the battery cells. However, the warping degree of the battery cells after correction is still high, and the correction effect is poor. Utility Model Content

[0004] The utility model provides a correction device, aiming to solve the technical problem in the prior art that the warping degree of the battery sheet is still high after correction and the correction effect is poor.

[0005] The embodiment of the utility model provides a correction device, comprising a welding correction assembly for welding and transporting a sheet workpiece, the welding correction assembly comprising at least one welding correction unit corresponding to the sheet workpiece, the welding correction unit comprising a welding heating element, a first adsorption mechanism and a first flattening mechanism;

[0006] The welding heating element is used to provide a heat source when welding the sheet-like workpiece, the first adsorption mechanism is used to adsorb the sheet-like workpiece, and the first flattening mechanism is used to apply a downward pressure force to the front side of the sheet-like workpiece.

[0007] Optionally, a plurality of the welding heating elements, a plurality of the first adsorption mechanisms and a plurality of the first flattening mechanisms are arranged at intervals along a first direction, and the first adsorption mechanisms and the first flattening mechanisms are respectively located on both sides of the welding heating element along the first direction.

[0008] Optionally, the plurality of first adsorption mechanisms include two edge first adsorption mechanisms located at both side edges of the welding correction unit along the first direction, and the plurality of first flattening mechanisms are located between the two edge first adsorption mechanisms.

[0009] Optionally, the first adsorption mechanism includes a plurality of first adsorption pressure needles spaced apart along a second direction, the second direction being perpendicular to the first direction, and the first adsorption pressure needles are further used to press the sheet workpiece during welding.

[0010] Optionally, the welding correction assembly further comprises a mounting cover connected to the welding correction unit, the mounting cover is connected to a lifting mechanism, and the lifting mechanism is used to drive the welding correction unit to approach or move away from the sheet workpiece;

[0011] Before the lifting mechanism drives the welding correction unit to approach the sheet workpiece, the first flattening mechanism protrudes from the first adsorption mechanism.

[0012] Optionally, it also includes a transmission correction component, which is used to transmit the sheet workpiece after welding. The transmission correction component includes at least one adsorption correction mechanism corresponding to the sheet workpiece, and the adsorption correction mechanism is used to adsorb the back side of the sheet workpiece when the sheet workpiece is transmitted.

[0013] Optionally, the transmission correction component includes a transmission belt, and the adsorption correction mechanism includes a plurality of rows of adsorption hole groups opened on the transmission belt.

[0014] Optionally, it also includes a turnover correction component, which is used for the sheet workpiece that has been completed through turnover transmission. The turnover correction component includes at least one suction correction unit corresponding to the sheet workpiece, and the suction correction unit includes a second suction mechanism and a second flattening mechanism. The second suction mechanism is used to adsorb the sheet workpiece, and the second flattening mechanism is used to apply a downward pressure force to the front side of the sheet workpiece.

[0015] Optionally, a plurality of the second adsorption mechanisms and a plurality of the second flattening mechanisms are spaced and arranged alternately along the third direction.

[0016] Optionally, it also includes a cooling and circulation correction component, which is used for circulating and cooling the sheet workpiece after welding. The cooling and circulation correction component includes at least one cooling unit and at least one suction correction unit corresponding to the sheet workpiece.

[0017] In the embodiment of the utility model, when the sheet workpiece is being transported from the welding correction assembly to the next workstation, when the sheet workpiece has not yet warped and is warping, the first flattening mechanism continuously applies a downward pressure to the front side of the sheet workpiece, so that the back contact battery cell has a tendency to be concave toward the back side, so as to correct the sheet workpiece and put the sheet workpiece in a flattened correction state, thereby preventing the sheet workpiece from warping due to welding shrinkage in advance, and further ensuring that the sheet workpiece will not warp in the end during welding shrinkage, and the correction effect is good, thereby avoiding the poor correction effect caused by correction after warping.

[0018] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a welding correction component in a correction device provided in an embodiment of the utility model;

[0020] Figure 2 A bottom view structural diagram of a welding correction assembly in a correction device provided in an embodiment of the utility model;

[0021] Figure 3 A bottom view structural schematic diagram of a welding correction unit in a welding correction assembly provided in an embodiment of the utility model;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a welding correction unit in a welding correction assembly provided in an embodiment of the utility model;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of a transmission correction component in a correction device provided by an embodiment of the utility model;

[0024] Figure 6 A schematic diagram of the three-dimensional structure of a turnover correction component in a correction device provided by an embodiment of the utility model;

[0025] Figure 7 A schematic diagram of the side structure of the suction correction unit in the turnover correction assembly provided by the embodiment of the utility model;

[0026] Figure 8 A bottom view structural diagram of a suction correction unit in a turnover correction assembly provided by an embodiment of the utility model;

[0027] Fig. 9 A schematic diagram of the three-dimensional structure of the suction correction unit in the turnover correction assembly provided by the embodiment of the utility model;

[0028] Fig.10 A schematic diagram of the layout of the welding correction component, the transmission correction component, and the turnover correction component in the correction device provided in an embodiment of the utility model.

[0029] Reference numerals:

[0030] 1-welding correction assembly, 11-welding correction unit, 111-welding heating element, 112-first adsorption mechanism, 1121-first adsorption pressure needle, 113-first flattening mechanism, 1131-first pressure block, 1132-first elastic member, 12-mounting cover, 2-transmission correction assembly, 21-transmission belt, 22-adsorption correction mechanism, 221-adsorption hole group, 3-turnover correction assembly, 31-suction correction unit, 311-second adsorption mechanism, 3111-second adsorption pressure needle, 312-second flattening mechanism, 3121-second pressure block, 3122-second elastic member, 32-mounting seat. DETAILED DESCRIPTION

[0031] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] Reference Figures 1 to 4 The embodiment of the utility model discloses a correction device, including a welding correction assembly 1 for welding and transporting sheet workpieces, the welding correction assembly 1 includes at least one welding correction unit 11 corresponding to the sheet workpiece, the welding correction unit 11 includes a welding heating element 111, a first adsorption mechanism 112 and a first flattening mechanism 113; the welding heating element 111 is used to provide a heat source when welding multiple sheet workpieces, the first adsorption mechanism 112 is used to adsorb the sheet workpiece, and the first flattening mechanism 113 is used to apply a downward pressure force to the front of the sheet workpiece.

[0033] Specifically, the welding correction assembly 1 is specifically used for welding multiple sheet workpieces, and the welding correction assembly 1 may include multiple welding correction units 11, and the multiple welding correction units 11 correspond to multiple sheet workpieces respectively. The sheet workpiece may be a back-contact battery cell before welding, or other thin sheet workpieces that are prone to warping, such as steel plates. The sheet workpiece is preferably a back-contact battery cell before welding, and the warping of the back-contact battery cell mainly occurs during the cooling and shrinking process of the welding strip after welding is completed. During the cooling and shrinking process, the battery cell warps toward the front, and the cross-sectional shape of the battery cell after warping is arc-shaped, and the battery cell is not flat.

[0034] The welding correction assembly 1 is used for welding a plurality of back-contact battery cells. After the plurality of back-contact battery cells are connected into a battery string through welding strips, the welding correction assembly 1 is also used for transporting the welded back-contact battery cells to the transport correction assembly 2. The number of welding correction units 11 in the welding correction assembly 1 is determined according to the number of back-contact battery cells.

[0035] The welding correction unit 11 specifically includes a plurality of welding heating elements 111, a plurality of first adsorption mechanisms 112 and a plurality of first flattening mechanisms 113. The number of welding heating elements 111, the first adsorption mechanisms 112 and the first flattening mechanisms 113 in a single welding correction unit 11 is determined according to the size of the sheet workpiece. For example, the number of welding heating elements 111 in a single welding correction unit 11 can be four, the number of first adsorption mechanisms 112 can be three, and the number of first flattening mechanisms 113 can be two. The larger the size of the sheet workpiece, the more the number of first flattening mechanisms 113 is, so as to ensure that the sheet workpiece can be corrected in place. By setting up a plurality of first flattening mechanisms 113, multiple parts of the sheet workpiece can be corrected, the correction coverage is larger, and the correction is more thorough. The welding heating element 111 can be an infrared lamp tube, or a laser emitter, a hot air emitter, etc. After welding is completed, the first adsorption mechanism 112 is specifically used to adsorb the front of the sheet workpiece.

[0036] Before welding multiple back-contact battery cells, the multiple back-contact battery cells are first transferred to the welding table, and the multiple back-contact battery cells are placed on the welding table with the front side facing upward, and the welding correction assembly 1 is located above the welding table. During welding, the multiple welding correction units 11 first move downward as a whole, and during the downward movement, the first flattening mechanism 113 first contacts the front side of the sheet workpiece, and then the multiple welding correction units 11 continue to move downward until the first adsorption mechanism 112 contacts the front side of the sheet workpiece. During this process, the first flattening mechanism 113 applies a downward pressure force to the front side of the sheet workpiece, and then, under the action of the multiple welding heating elements 111, the multiple back-contact battery cells and the welding strips are heated and welded. In the embodiment of the utility model, before welding, the first flattening mechanism 113 will apply a downward pressure force to the front side of the back contact battery cell. On the one hand, it plays the role of pressing the back contact battery cell during the welding process. On the other hand, it makes the back contact battery cell tend to be concave toward the back side, which can avoid the back contact battery cell bulging and warping toward the front side due to welding shrinkage after subsequent welding, that is, it plays the role of pre-deforming the back contact battery cell in the opposite direction to offset the subsequent convex deformation of the front side.

[0037] After welding is completed, the first adsorption mechanism 112 adsorbs the front side of the back contact cell to transport the welded back contact cell to the transmission correction assembly 2. During transportation, the back contact cell is suspended in the air, and the first flattening mechanism 113 continues to apply a downward pressure to the front side of the back contact cell, so that the back contact cell has a tendency to be concave toward the back side, so as to prevent the back contact cell from bulging and warping toward the front side due to welding shrinkage.

[0038] In the prior art, after welding is completed, a manipulator is usually used to grab the back contact cell to the next station. During this process, welding shrinkage may cause the back contact cell to warp. In the embodiment of the utility model, when the back contact cell is being transported to the transmission correction component 2, when the back contact cell has not yet warped and when it is warping, the first flattening mechanism 113 continuously applies a downward pressure to the front of the back contact cell to correct the back contact cell, so that the back contact cell is in a flattened correction state, thereby preventing the back contact cell from warping due to welding shrinkage in advance, and thus preventing the back contact cell from warping in the end when the welding shrinks, and having a good correction effect, thereby avoiding the poor correction effect caused by correction after warping.

[0039] Before welding, the first flattening mechanism 113 protrudes the first adsorption mechanism 112 toward the welding table, that is, the bottom of the first flattening mechanism 113 is lower than the bottom of the first adsorption mechanism 112. The first flattening mechanism 113 includes a first pressing block 1131 and a first elastic member 1132 connected to the first pressing block 1131. The first elastic member 1132 includes a spring. The first pressing block 1131 is a long strip structure, and the first pressing block 1131 is used to directly contact the front of the sheet workpiece. After the first flattening mechanism 113 contacts the front of the sheet workpiece, the first elastic member 1132 is compressed during the continuous downward movement of the welding correction unit 11, and the first pressing block 1131 applies a downward pressure force to the front of the back contact battery cell. During the transportation of the back contact battery cell to the transmission correction assembly 2, the first adsorption mechanism 112 adsorbs the front of the back contact battery cell, the first elastic member 1132 is compressed, and the first pressing block 1131 applies a downward pressure force to the front of the back contact battery cell.

[0040] Reference Figure 3 and Figure 4 A plurality of welding heating elements 111, a plurality of first adsorption mechanisms 112 and a plurality of first flattening mechanisms 113 are arranged at intervals along the first direction, and the first adsorption mechanisms 112 and the first flattening mechanisms 113 are respectively located on both sides of the welding heating element 111 along the first direction.

[0041] Specifically, a plurality of welding correction units 11 are installed on the mounting cover 12, and the first direction is specifically the length direction of the mounting cover 12. The first direction can refer to Figure 2 and Figure 3 The welding heating element 111 is adjacent to both the first adsorption mechanism 112 and the first flattening mechanism 113 , the first flattening mechanism 113 is adjacent to the welding heating element 111 only, and the first adsorption mechanism 112 is adjacent to the welding heating element 111 only.

[0042] When the number of welding heating elements 111 in a single welding correction unit 11 is four, the number of first adsorption mechanisms 112 is three, and the number of first flattening mechanisms 113 is two, each first flattening mechanism 113 is located between two welding heating elements 111, one of the first adsorption mechanisms 112 is located between the two middle welding heating elements 111, and the other two first adsorption mechanisms 112 are located at the two side edges of the welding correction unit 11 along the first direction.

[0043] In the embodiment of the utility model, a plurality of welding heating elements 111, a plurality of first adsorption mechanisms 112 and a plurality of first flattening mechanisms 113 are arranged at intervals along the first direction, which can prevent the first adsorption mechanism 112 and the first flattening mechanism 113 from blocking the welding heating element 111, thereby preventing the welding effect of the welding strip from being affected. In addition, the first adsorption mechanism 112 and the first flattening mechanism 113 are respectively located on both sides of the welding heating element 111 along the first direction, which can ensure the uniformity of the distribution of the first adsorption mechanism 112 and the first flattening mechanism 113, and it is not easy to cause the back contact battery cell to crack when correcting the back contact battery cell.

[0044] Reference Figure 3 and Figure 4 The multiple first adsorption mechanisms 112 include two edge first adsorption mechanisms located at the two side edges of the welding correction unit 11 along the first direction, and the multiple first flattening mechanisms 113 are located between the two edge first adsorption mechanisms.

[0045] Specifically, when there are three first adsorption mechanisms 112, one of the first adsorption mechanisms 112 is located in the middle position, and the other two are located at the first adsorption mechanisms 112 on both side edges of the welding correction unit 11 along the first direction, that is, the edge first adsorption mechanisms. When the welding correction assembly 1 transports a sheet workpiece, the two edge first adsorption mechanisms adsorb the two side edges of the sheet workpiece, the first adsorption mechanism 112 at the middle position adsorbs the middle of the sheet workpiece, and the first flattening mechanism 113 located between the two edge first adsorption mechanisms applies a downward pressure force to the back contact battery cell. When the back contact battery cell is warped, the height of the middle protrusion is the largest, and the height of the protrusions on both sides is the smallest or does not protrude. In the embodiment of the utility model, multiple first flattening mechanisms 113 are located between the two edge first adsorption mechanisms, that is, multiple first flattening mechanisms 113 are not located at the two side edges of the welding correction unit 11, thereby ensuring the correction effect.

[0046] Reference Figure 3 and Figure 4 The first adsorption mechanism 112 includes a plurality of first adsorption pressure needles 1121 spaced apart along a second direction, the second direction being perpendicular to the first direction, and the first adsorption pressure needles 1121 are also used to press the sheet workpiece during welding.

[0047] Specifically, the second direction is the width direction of the mounting cover 12. Figure 3 The direction indicated by the arrow B. The first adsorption pressure needle 1121 includes a first pressure needle and a first suction nozzle connected to the first pressure needle. The number of first adsorption pressure needles 1121 in a single first adsorption mechanism 112 is determined according to the size of the sheet workpiece, such as the number of first adsorption pressure needles 1121 can be six to ten. In the embodiment of the utility model, when welding the sheet workpiece, in addition to the first flattening mechanism 113 pressing the sheet workpiece, the first adsorption pressure needle 1121 also plays a role in pressing the sheet workpiece, thereby ensuring the welding effect.

[0048] Reference Figure 1 and Figure 4 The welding correction assembly 1 also includes a mounting cover 12 connected to the welding correction unit 11, and the mounting cover 12 is connected to a lifting mechanism, which is used to drive the welding correction unit 11 to approach or move away from the sheet workpiece; before the lifting mechanism drives the welding correction unit 11 to approach the sheet workpiece, the first flattening mechanism 113 protrudes from the first adsorption mechanism 112.

[0049] Specifically, when the lifting mechanism is working, it drives the mounting cover 12 to rise and fall, thereby driving the welding correction unit 11 on the mounting cover 12 to rise and fall, so that the welding correction unit 11 is close to or away from the sheet workpiece. Before the lifting mechanism drives the welding correction unit 11 to approach the sheet workpiece, the first flattening mechanism 113 protrudes the first adsorption mechanism 112 toward the sheet workpiece, that is, the bottom of the first flattening mechanism 113 is lower than the bottom of the first adsorption mechanism 112. The height difference between the bottom of the first flattening mechanism 113 and the bottom of the first adsorption mechanism 112 is greater than 0, and can be less than or equal to twice the thickness of the first pressing block 1131.

[0050] Reference Figure 5 The correction device provided in the embodiment of the utility model also includes a transmission correction component 2, which is used to transmit the sheet workpiece after welding. The transmission correction component 2 includes at least one adsorption correction mechanism 22 corresponding to the sheet workpiece, and the adsorption correction mechanism 22 is used to adsorb the back side of the sheet workpiece when the sheet workpiece is transmitted.

[0051] Specifically, after welding is completed, the welding correction component 1 transports the sheet workpiece to the transmission correction component 2, and the transmission correction component 2 transmits the sheet workpiece. The transmission correction component 2 specifically includes a plurality of adsorption correction mechanisms 22, and the plurality of adsorption correction mechanisms 22 are respectively used to adsorb a plurality of sheet workpieces. When the adsorption correction mechanism 22 adsorbs the sheet workpiece, it applies a downward suction force to the sheet workpiece. The transmission correction component 2 also includes a transmission mechanism, and the transmission mechanism is used to transmit the sheet workpiece. When the transmission mechanism transmits the sheet workpiece, the front side of the sheet workpiece faces upward. For example, when the sheet workpiece is a back-contact battery cell, the front side of the back-contact battery cell faces upward, and the back side of the back-contact battery cell contacts the transmission mechanism.

[0052] During the process of the transmission and correction component 2 transmitting the sheet workpiece, the adsorption and correction mechanism 22 applies a downward suction force to the sheet workpiece. The direction of the downward suction force is opposite to the direction of the warping of the sheet workpiece, so that the sheet workpiece is tightly attached to the transmission mechanism during the transmission process, and the sheet workpiece is continuously maintained in a horizontal state during the transmission process, thereby avoiding the sheet workpiece from bulging and warping toward the front due to the cooling shrinkage of welding.

[0053] The transmission correction assembly 2 includes a transmission belt 21 , and the adsorption correction mechanism 22 includes a plurality of rows of adsorption hole groups 221 opened on the transmission belt 21 .

[0054] Specifically, the transmission mechanism includes a transmission belt 21, and the transmission belt 21 is made of polytetrafluoroethylene cloth. A negative pressure generator is arranged in the transmission mechanism, and the negative pressure generator can be a vacuum pump, and the negative pressure generator is used to make the adsorption hole group 221 on the transmission belt 21 generate negative pressure adsorption force. The number of adsorption hole groups 221 in a single adsorption correction mechanism 22 can be determined according to the size of the sheet workpiece, such as the number of adsorption hole groups 221 in a single adsorption correction mechanism 22 can be three rows, one row of adsorption hole groups 221 is used to adsorb the middle of the sheet workpiece, and the other two rows of adsorption hole groups 221 are used to adsorb the edges of the sheet workpiece.

[0055] Reference Figures 6 to 10 The correction device provided by the embodiment of the utility model also includes a turnover correction component 3, which is used for the sheet workpiece that has been completed by turnover transmission. The turnover correction component 3 includes at least one suction correction unit 31 corresponding to the sheet workpiece. The suction correction unit 31 includes a second suction mechanism 311 and a second flattening mechanism 312. The second suction mechanism 311 is used to adsorb the sheet workpiece, and the second flattening mechanism 312 is used to apply a downward pressure force to the front of the sheet workpiece.

[0056] Specifically, Fig.10 The direction indicated by the dotted arrow is the conveying direction of the sheet workpiece. After welding is completed, the welding correction component 1 transports the sheet workpiece to the conveying correction component 2. The conveying correction component 2 conveys the sheet workpiece. When the conveying correction component 2 conveys the sheet workpiece to the discharge position, the turnover correction component 3 absorbs the sheet workpiece and circulates it. The turnover correction component 3 specifically includes a plurality of suction correction units 31, and the plurality of suction correction units 31 correspond to the plurality of sheet workpieces respectively. The suction correction unit 31 specifically includes a plurality of second suction mechanisms 311 and a plurality of second flattening mechanisms 312.

[0057] During the process of the turnover correction component 3 rotating the sheet workpiece, the second flattening mechanism 312 applies a downward pressure force to the front of the sheet workpiece to further correct the sheet workpiece, so as to ensure that the sheet workpiece remains horizontal during the rotation process, and to avoid warping of the sheet workpiece due to welding cooling shrinkage. In the embodiment of the utility model, the sheet workpiece is continuously corrected during the entire process from the welding of the sheet workpiece to the turnover of the sheet workpiece, and there is no uncorrected time period, thereby realizing closed-loop correction to achieve a better correction effect, so that the warping degree of the sheet workpiece is lower.

[0058] The structure of the second adsorption mechanism 311 is the same as that of the first adsorption mechanism 112. The second adsorption mechanism 311 also includes a plurality of second adsorption pressure pins 3111 arranged at intervals. The second adsorption pressure pins 3111 include a second pressure pin and a second suction nozzle connected to the second pressure pin. The structure of the second flattening mechanism 312 is the same as that of the first flattening mechanism 113. The second flattening mechanism 312 includes a second pressing block 3121 and a second elastic member 3122 connected to the second pressing block 3121.

[0059] The number of the second adsorption mechanisms 311 may be greater than the number of the first adsorption mechanisms 112, and the number of the second flattening mechanisms 312 may be greater than the number of the first flattening mechanisms 113. In a single suction correction unit 31, the number of the second adsorption mechanisms 311 may be four, and the number of the first flattening mechanisms 113 may be three. The distance between two adjacent second adsorption mechanisms 311 may be smaller than the distance between two adjacent first adsorption mechanisms 112, and the distance between two adjacent second flattening mechanisms 312 may be smaller than the distance between two adjacent first flattening mechanisms 113, so as to better achieve the correction of the sheet workpiece.

[0060] Reference Figure 8 and Fig. 9 The plurality of second adsorption mechanisms 311 and the plurality of second flattening mechanisms 312 are spaced and arranged alternately along the third direction.

[0061] Specifically, the turnover correction assembly 3 also includes a mounting seat 32 connected to the plurality of suction correction units 31. The third direction may be the length direction of the mounting seat 32. Figure 8 The direction indicated by the arrow C in the figure. When there are four second adsorption mechanisms 311, two of the second adsorption mechanisms 311 are located at the two side edges of the suction correction unit 31 along the third direction. In the embodiment of the utility model, the uniformity of the distribution of the second adsorption mechanism 311 and the second flattening mechanism 312 can be ensured, and it is not easy to cause the back contact battery cell to crack.

[0062] The correction device provided in the embodiment of the utility model also includes a cooling circulation correction component, which is used for circulating and cooling the sheet workpiece after welding. The cooling circulation correction component includes at least one cooling unit and at least one suction correction unit 31 corresponding to the sheet workpiece.

[0063] Specifically, the difference between the cooling circulation correction assembly and the circulation correction assembly 3 is that the cooling circulation correction assembly has an additional cooling unit, and the other structures of the cooling circulation correction assembly can be consistent with the structure of the circulation correction assembly 3.

[0064] The suction correction unit 31 in the cooling turnover correction assembly is used to suck and correct the sheet workpiece, and at least one cooling unit is used to cool multiple sheet workpieces. The cooling unit can cool the sheet workpiece by air cooling, and the cooling unit includes multiple blowing holes, which are used to blow out cold air. By setting the cooling unit, the cooling speed of the sheet workpiece can be increased.

[0065] After welding is completed, the welding correction component 1 can transport the sheet workpiece to the cooling and circulation correction component, and the cooling and circulation correction component then transfers the sheet workpiece to the transmission correction component 2.

[0066] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0067] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A correction device, characterized in that: A welding correction assembly for welding and transporting a sheet-shaped workpiece is included, wherein the welding correction assembly includes at least one welding correction unit corresponding to the sheet-shaped workpiece, and the welding correction unit includes a welding heating element, a first adsorption mechanism, and a first flattening mechanism; The welding heating element is used to provide a heat source when welding the sheet-like workpiece, the first adsorption mechanism is used to adsorb the sheet-like workpiece, and the first flattening mechanism is used to apply a downward pressure force to the front side of the sheet-like workpiece.

2. The correction device according to claim 1, characterized in that The plurality of welding heating elements, the plurality of the first adsorption mechanisms and the plurality of the first flattening mechanisms are arranged at intervals along the first direction, and the first adsorption mechanisms and the first flattening mechanisms are respectively located on both sides of the welding heating element along the first direction.

3. The correction device according to claim 2, characterized in that The plurality of first adsorption mechanisms include two edge first adsorption mechanisms located at both side edges of the welding correction unit along the first direction, and the plurality of first flattening mechanisms are located between the two edge first adsorption mechanisms.

4. The correction device according to any one of claims 1 to 3, characterized in that The first adsorption mechanism includes a plurality of first adsorption pressure needles arranged at intervals along a second direction, the second direction is perpendicular to the first direction, and the first adsorption pressure needles are also used to press the sheet workpiece during welding.

5. The correction device according to any one of claims 1 to 3, characterized in that: The welding correction assembly further comprises a mounting cover connected to the welding correction unit, the mounting cover is connected to a lifting mechanism, and the lifting mechanism is used to drive the welding correction unit to approach or move away from the sheet workpiece; Before the lifting mechanism drives the welding correction unit to approach the sheet workpiece, the first flattening mechanism protrudes from the first adsorption mechanism.

6. The correction device according to any one of claims 1 to 3, characterized in that: It also includes a transmission correction component, which is used to transmit the sheet workpiece after welding. The transmission correction component includes at least one adsorption correction mechanism corresponding to the sheet workpiece, and the adsorption correction mechanism is used to adsorb the back side of the sheet workpiece when the sheet workpiece is transmitted.

7. The correction device according to claim 6, characterized in that The transmission correction component includes a transmission belt, and the adsorption correction mechanism includes a plurality of rows of adsorption hole groups opened on the transmission belt.

8. The correction device according to claim 6, characterized in that It also includes a turnover correction component, which is used for the sheet workpiece that has been completed through turnover transmission. The turnover correction component includes at least one suction correction unit corresponding to the sheet workpiece, and the suction correction unit includes a second suction mechanism and a second flattening mechanism. The second suction mechanism is used to adsorb the sheet workpiece, and the second flattening mechanism is used to apply a downward pressure force to the front side of the sheet workpiece.

9. The correction device according to claim 8, characterized in that The plurality of the second adsorption mechanisms and the plurality of the second flattening mechanisms are spaced and arranged alternately along the third direction.

10. The correction device according to any one of claims 1 to 3, characterized in that: It also includes a cooling and turnover correction component, which is used for rotating and cooling the sheet workpiece after welding. The cooling and turnover correction component includes at least one cooling unit and at least one suction correction unit corresponding to the sheet workpiece.

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