Pressing device and battery piece series welding machine

Abstract

The utility model discloses a pressing device and a battery piece series welding machine. The pressing device comprises a mounting mechanism and a pressing mechanism, wherein the mounting mechanism comprises a plurality of mounting rows arranged at intervals; the pressing rod is connected to the two adjacent installation rows in a bridging mode, the two ends of the pressing rod correspond to the positions of the two adjacent installation rows respectively, and at least one of the two ends of the pressing rod is detachably connected with the corresponding installation row so that the position of the pressing rod on the installation rows can be adjusted. The side surface of the pressing rod is suitable for pressing a to-be-pressed piece. The pressing device can adapt to different types of to-be-pressed workpieces and has high applicability.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic panel processing equipment, and more specifically, to a pressing device and a cell string welding machine. Background Art

[0002] In the related art, solar cells are generally prepared by welding welding tapes on silicon wafers. Before welding the welding tapes to the silicon wafers, the welding tapes can be adhered to the silicon wafers by heat curing or light curing. There are multiple dispensing positions screen-printed with glue on the silicon wafers. During curing, the welding tapes are pressed tightly by a pressing mesh so that the welding tapes can be closely attached to the dispensing positions of the silicon wafers. Among them, the pressing mesh has multiple pressing needles, and each pressing needle corresponds to a dispensing position. When replacing different types of silicon wafers, different pressing meshes need to be correspondingly replaced, resulting in low applicability and high manufacturing cost of the pressing mesh.

[0003] Therefore, a new technical solution is needed to solve the above technical problems. Summary of the Utility Model

[0004] An object of the utility model is to provide a new technical solution for a pressing device.

[0005] According to a first aspect of the utility model, a pressing device is provided. The pressing device includes:

[0006] An installation mechanism, including a plurality of installation rows arranged at intervals;

[0007] A pressing rod, the pressing rod straddles two adjacent installation rows, both ends of the pressing rod correspond to the positions of two adjacent installation rows respectively, at least one of the two ends of the pressing rod is detachably connected to the corresponding installation row to adjust the position of the pressing rod on the installation row, and the side surface of the pressing rod is suitable for pressing a workpiece to be pressed.

[0008] Optionally, a plurality of installation parts are arranged at intervals in the running direction of the installation row, the installation parts are detachably connected to the installation row, and one of the two ends of the pressing rod is connected to the installation part.

[0009] Optionally, the installation row is provided with a plurality of installation holes, and the installation parts are detachably installed in the installation holes.

[0010] Optionally, the installation part includes a movable part and a first elastic part, the pressing rod is connected to the movable part, the movable part is slidably arranged in the installation hole, the first elastic part is located in the installation hole, and the first elastic part is suitable for forming an elastic force along the pressing direction on the movable part.

[0011] Optionally, it further includes a limiting member. Both ends of the movable member protrude from the mounting hole. The pressing rod is connected to one end of the movable member. The limiting member is located outside the mounting hole and is connected to the other end of the movable member.

[0012] Optionally, one end of the movable member forms a conical structure, and the top of the conical structure is connected to the pressing rod.

[0013] Optionally, the other end of the movable member forms a limiting groove. The limiting member is annular and is snap-fitted in the limiting groove.

[0014] Optionally, the movable member has a radial protrusion. The first elastic member is sleeved outside the movable member. One end of the first elastic member abuts against the radial protrusion, and the other end of the first elastic member abuts against the bottom of the mounting hole.

[0015] Optionally, at least one set of the pressing rods is arranged along the running direction of the mounting row. Each set of the pressing rods includes two pressing rods arranged at intervals.

[0016] Optionally, a through hole is formed between two adjacent mounting rows, and the through hole is adapted to expose the workpiece to be pressed.

[0017] Optionally, it further includes a pressing and positioning member. The pressing and positioning member is connected to the mounting mechanism and is located outside the through hole along the running direction of the mounting row.

[0018] Optionally, the pressing and positioning member is slidably connected to the mounting mechanism.

[0019] Optionally, a second elastic member is arranged between the pressing and positioning member and the mounting mechanism.

[0020] According to the second aspect of the present invention, a battery cell string welding machine is provided. The battery cell string welding machine includes the pressing device of the above embodiment.

[0021] One technical effect of the present application is that the mounting mechanism is provided with a plurality of mounting rows at intervals. The pressing rod straddles two adjacent mounting rows. The two ends of the pressing rod correspond to the positions of two adjacent mounting rows respectively. At least one of the two ends of the pressing rod is detachably connected to the corresponding mounting row to adjust the position of the pressing rod on the mounting row, so as to be able to adapt to different types of workpieces to be pressed and improve the applicability of the pressing device.

[0022] Other features and advantages of the present invention will become clear through the following detailed description of the exemplary embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0023] The drawings incorporated in and forming a part of the specification illustrate embodiments of the present utility model and, together with the description thereof, are used to explain the principles of the present utility model.

[0024] Figure 1 It is a schematic structural view of a pressing device according to an embodiment of the present application.

[0025] Figure 2 is Figure 1 It is a schematic structural view of the other side of the illustrated pressing device.

[0026] Figure 3 is Figure 1 It is a sectional view taken along line A-A as shown.

[0027] Figure 4 is Figure 2 It is an enlarged view at position B as shown.

[0028] Figure 5 is Figure 3 It is an enlarged view at position C as shown.

[0029] Figure 6 It is a schematic structural view of another perspective of a pressing device according to an embodiment of the present application.

[0030] Figure 7 It is a side view of a pressing device according to an embodiment of the present application.

[0031] Reference numerals:

[0032] 1. Mounting mechanism; 11. Mounting row; 111. Mounting hole; 12. Through hole; 2. Mounting part; 212. Movable part; 2121. Protrusion; 2122. Limiting groove; 213. First elastic member; 22. Pressing rod; 23. Limiting member; 3. Buffer pad; 4. Pressing and positioning member. Detailed implementation manners

[0033] Now, various exemplary embodiments of the present utility model will be described in detail with reference to the drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present utility model or its application or use.

[0035] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0036] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0038] According to an embodiment of the present application, a pressing device is provided. As Figures 1 to 7 shown, the pressing device includes: a mounting mechanism 1 and a pressing rod 22. Among them, the mounting mechanism 1 includes a plurality of mounting rows 11 arranged at intervals, the pressing rod 22 straddles two adjacent mounting rows 11, both ends of the pressing rod 22 correspond to the positions of two adjacent mounting rows 11 respectively, and at least one of both ends of the pressing rod 22 is detachably connected to the corresponding mounting row 11 to adjust the position of the pressing rod 22 on the mounting row 11, and the side surface of the pressing rod 22 is adapted to press the workpiece to be pressed.

[0039] In this example, the mounting mechanism 1 is provided with a plurality of mounting rows 11 at intervals, the pressing rod 22 straddles two adjacent mounting rows 11, both ends of the pressing rod 22 correspond to the positions of two adjacent mounting rows 11 respectively, and at least one of both ends of the pressing rod 22 is detachably connected to the corresponding mounting row 11 to adjust the position of the pressing rod 22 on the mounting row 11, so as to be able to adapt to different types of workpieces to be pressed and improve the applicability of the pressing device.

[0040] As Figure 1 、 Figure 2 and Figure 4 shown, in this example, the mounting mechanism 1 is provided with a plurality of mounting rows 11 at intervals in the first direction. There are multiple pressing rods 22, and both ends of each pressing rod 22 correspond to the positions of two adjacent mounting rows 11 respectively. Both ends of the pressing rod 22 can be detachably connected to the two mounting rows 11 respectively, or one end of the pressing rod 22 is detachably connected to the mounting row 11 and the other end extends to another mounting row 11 to correspond to the mounting row 11.

[0041] The workpiece to be pressed corresponds to the position of the pressing rod 22 so that the side surface of the pressing rod 22 can press the workpiece to be pressed. For example, if the pressing rod 22 is a cylindrical rod, the side surface of the cylindrical rod can be used to press the workpiece to be pressed. Or, if the pressing rod 22 is a prismatic rod, one of the side surfaces of the side surface of the prismatic rod can be used to press the workpiece to be pressed.

[0042] In this example, the component to be pressed can be a solder ribbon. There is glue dotting on the surface of the silicon wafer, and the solder ribbon covers the glue dotting. The installation mechanism 1 can drive the pressure bar 22 to move towards the solder ribbon so that the pressure bar 22 can press the solder ribbon tightly against the silicon wafer, facilitating subsequent light curing or heat curing operations. Among them, the position of the pressure bar 22 corresponds to the position of the glue dotting, so as to press the solder ribbon tightly at the position of the glue dotting on the silicon wafer. When the silicon wafers are of different models or the glue dotting positions are different, the position of the pressure bar 22 can be changed to improve the applicability of the pressing device.

[0043] In this example, as Figure 1 shown, the component to be pressed can be arranged along the second direction, and multiple pressure bars 22 are arranged at intervals along the second direction to improve the pressing effect on the component to be pressed. The installation mechanism 1 is provided with multiple installation rows 11 along the first direction, that is, there are multiple pressure bars 22 along the first direction, and multiple components to be pressed can be correspondingly arranged along the first direction.

[0044] As Figure 6 shown, in this example, the installation mechanism 1 can be an installation plate, and multiple installation rows 11 are arranged along the length direction of the installation plate.

[0045] As Figure 2 shown, in this example, multiple buffer pads 3 are further arranged on the installation mechanism 1. The installation mechanism 1 is in transmission connection with the driving mechanism. Through the driving mechanism, the mechanism can be driven to move, so as to drive the pressure bar 22 to move towards the component to be pressed, so that the pressure bar 22 presses the component to be pressed, or drive the pressure bar 22 away from the component to be pressed, so that the pressure bar 22 disengages from the component to be pressed. The buffer pads 3 arranged on the installation mechanism 1 can play a role in shock absorption and buffering when the driving mechanism drives the pressure bar 22 to press the component to be pressed. Among them, the buffer pads 3 can be rubber pads, etc.

[0046] In one example, as Figures 1 to 5 shown, multiple installation parts 2 are arranged at intervals in the running direction of the installation row 11. The installation parts 2 are detachably connected to the installation row 11, and one of the two ends of the pressure bar 22 is connected to the installation part 2.

[0047] As Figure 1 shown, multiple installation parts 2 are arranged at intervals along the running direction of the installation row 11, that is, multiple installation parts 2 are arranged at intervals along the second direction of the installation row 11, and the installation parts 2 are detachably connected to the installation row 11. One end of the pressure bar 22 is connected to the corresponding installation part 2, or both ends of the pressure bar 22 are respectively connected to the corresponding installation parts 2. The position of the pressure bar 22 can be changed by changing the position of the installation part 2.

[0048] In this example, the pressure bar 22 can be connected to the installation part 2 by welding, bonding or screwing with fasteners, etc. Those skilled in the art can determine according to the actual situation and are not specifically limited here.

[0049] As Figures 3 to 5 shown, in one example, the mounting row 11 is provided with a plurality of mounting holes 111, and the mounting part 2 is detachably mounted in the mounting holes 111.

[0050] In this example, a plurality of mounting holes 111 are arranged at intervals along the running direction of each mounting row 11, and the mounting part 2 is detachably mounted in the mounting holes 111. For example, the mounting part 2 passes through the mounting hole 111 and is clamped in the mounting hole 111 to facilitate the disassembly or installation of the mounting part 2.

[0051] As Figure 3 and Figure 5 shown, in one example, the mounting part 2 includes a movable part 212 and a first elastic part 213. The pressing rod 22 is connected to the movable part 212. The movable part 212 is slidably arranged in the mounting hole 111. The first elastic part 213 is located in the mounting hole 111, and the first elastic part 213 is adapted to form an elastic force in the pressing direction on the movable part 212.

[0052] In this example, the movable part 212 is slidably connected in the mounting hole 111. The first elastic part 213 is arranged in the mounting hole 111. The first elastic part 213 can form an elastic force in the pressing direction on the movable part 212. One end of the pressing rod 22 is connected to the movable part 212, and the pressing rod 22 presses on the part to be pressed. The first elastic part 213 has a tendency to push the pressing rod 22 to move towards the part to be pressed, so that the pressing rod 22 can press the part to be pressed.

[0053] In this example, as Figure 5 shown, the movable part 212 has a radial protrusion 2121. The first elastic part 213 is sleeved outside the movable part 212. One end of the first elastic part 213 abuts against the radial protrusion 2121, and the other end of the first elastic part 213 abuts against the bottom of the mounting hole 111.

[0054] The movable part 212 is provided with an annular protrusion 2121 in the radial direction. The first elastic part 213 is sleeved on the outside of the movable part 212. One end of the first elastic part 213 abuts against the protrusion 2121, and the other end abuts against the inner wall of the mounting hole 111. The inner wall of the mounting hole 111 can also be correspondingly provided with a protrusion 2121, and the other end of the first elastic part 213 abuts against the protrusion 2121 on the inner wall of the mounting hole 111.

[0055] Among them, the first elastic part 213 can be a spring.

[0056] In one example, as Figure 5As shown, the pressing device further includes a limiting member 23. Both ends of the movable member 212 protrude from the mounting hole 111. The pressing rod 22 is connected to one end of the movable member 212. The limiting member 23 is located outside the mounting hole 111 and is connected to the other end of the movable member 212.

[0057] As Figure 5 shown, in this example, the movable member 212 can be a rod structure. Both ends of the movable member 212 protrude from the mounting hole 111, that is, both ends of the movable member 212 pass through the mounting hole 111. One end of the movable member 212 is adapted to be connected to the pressing rod 22, and the other end of the movable member 212 is connected to the limiting member 23. The limiting member 23 can limit the movable member 212 from sliding out of the mounting hole 111.

[0058] In this example, as Figure 5 shown, a limiting groove 2122 is formed at the other end of the movable member 212. The limiting member 23 is annular, and the limiting member 23 is snap-fitted in the limiting groove 2122.

[0059] A limiting groove 2122 is provided at one end of the movable member 212. The limiting member 23 is sleeved in the limiting groove 2122 and forms a snap connection with the limiting groove 2122. One end of the limiting member 23 can abut against the end of the mounting hole 111, thereby preventing the movable member 212 from sliding out of the mounting hole 111. When it is necessary to disassemble the mounting part 2, first take out the limiting member 23 from the limiting groove 2122, and then the movable member 212 can slide out of the mounting hole 111.

[0060] For example, the limiting member 23 can be a metal ring. First, sleeve the limiting member 23 on the limiting groove 2122, and then squeeze the limiting member 23 so that the limiting member 23 can be stuck in the limiting groove 2122. When it is necessary to disassemble the mounting part 2, first take out the limiting member 23 from the limiting groove 2122, and then the movable member 212 can slide out of the mounting hole 111.

[0061] In one example, as Figure 5 shown, one end of the movable member 212 forms a conical structure, and the top of the conical structure is connected to the pressing rod 22.

[0062] As Figure 5 shown, in this example, one end of the movable member 212 is set as a conical structure, and the pressing rod 22 is connected to the top of the conical structure. By setting one end of the movable member 212 as a conical structure, it is beneficial to play a role in avoiding.

[0063] In one example, as Figure 4 shown, the pressing device includes at least one group of the pressing rods 22 arranged along the running direction of the mounting row 11. Each group of the pressing rods 22 includes two of the pressing rods 22 arranged at intervals.

[0064] As Figure 4 shown, in this example, along the running direction of the mounting row 11, that is, along the second direction, multiple groups of pressing rods 22 are connected to the mounting row 11 at intervals. Among them, each group of pressing rods 22 includes two pressing rods 22 arranged at intervals. The two pressing rods 22 jointly press the workpiece to be pressed, which can improve the reliability of pressing. For example, if the workpiece to be pressed is a solder ribbon and there is glue dispensing on the silicon wafer, the positions of the two pressing rods 22 correspond to the glue dispensing, that is, the two pressing rods 22 can be located on both sides of the glue dispensing, and the two pressing rods 22 can press the solder ribbon from the positions on both sides of the glue dispensing, so that the solder ribbon can be closely attached to the position of the glue dispensing on the silicon wafer.

[0065] In one example, as Figure 1 、 Figure 2 and Figure 4 shown, a through hole 12 is formed between two adjacent mounting rows 11, and the through hole 12 is adapted to expose the workpiece to be pressed.

[0066] As Figure 2 shown, in this example, two adjacent mounting rows 11 are arranged at intervals, and a through hole 12 is formed between the two adjacent mounting rows 11, that is, the mounting mechanism 1 can be arranged in a hollow manner along the thickness direction. The workpiece to be pressed corresponds to the position of the through hole 12, that is, the through hole 12 is suitable for exposing the workpiece to be pressed, so as to facilitate the curing operation by a light curing machine or a heat curing machine. The pressing rod 22 can span across the through hole 12 along the first direction, so that the side surface of the pressing rod 22 can press the workpiece to be pressed.

[0067] In one example, as Figures 1 to 4 shown, the pressing device further includes a pressing positioning member 4, and the pressing positioning member 4 is connected to the mounting mechanism 1, and the pressing positioning member 4 is located outside the through hole 12 along the running direction of the mounting row 11.

[0068] As Figure 4 shown, in this example, the pressing positioning member 4 is connected to the mounting mechanism 1, and along the running direction of the mounting row 11, the pressing positioning member 4 is located outside the through hole 12. The pressing positioning member 4 can perform pre-pressing positioning on the workpiece to be pressed, so as to facilitate the pressing rod 22 to press the workpiece to be pressed.

[0069] As Figure 1 shown, along the running direction of the through hole 12, the mounting mechanism 1 is provided with pressing positioning members 4 on both opposite sides, so as to further improve the stability of the pressing positioning member 4 in pressing and positioning the workpiece to be pressed.

[0070] In this example, a plurality of through holes 12 are arranged at intervals along the first direction, and a pressing positioning member 4 is correspondingly arranged outside each through hole 12.

[0071] ​In one example, the pressing and positioning member 4 is slidably connected to the mounting mechanism 1. The pressing and positioning member 4 can be slidably connected to the mounting mechanism 1 to facilitate adjusting the position of the pressing and positioning member 4.

[0072] For example, the mounting mechanism 1 is provided with a sliding groove in the first direction, the pressing and positioning member 4 is installed in the sliding groove, and the mounting and positioning member can move along the sliding groove to adjust its position in the first direction. Alternatively, the mounting mechanism 1 can also be provided with a sliding groove in the second direction, the pressing and positioning member 4 is installed in the sliding groove, and the mounting and positioning member can move along the sliding groove to adjust its position in the second direction. Those skilled in the art can determine according to the actual situation and are not specifically limited herein.

[0073] In one example, a second elastic member is provided between the pressing and positioning member 4 and the mounting mechanism 1. The second elastic member can form an elastic force in the pressing direction on the pressing and positioning member 4 to improve the reliability of the pressing of the pressing and positioning member 4.

[0074] For example, the pressing and positioning member 4 can be similar in structure to the movable member 212, and the second elastic member is a spring. Both ends of the pressing and positioning member 4 are respectively inserted through the mounting mechanism 1 and can slide relative to the mounting mechanism 1. The second elastic member is sleeved on the pressing and positioning member, one end of the second elastic member abuts against the pressing and positioning member 4, and the other end abuts against the mounting mechanism 1. The pressing and positioning member 4 is also provided with a limiting portion to prevent the pressing and positioning member 4 from detaching from the mounting mechanism 1.

[0075] According to the second aspect of the present invention, a battery cell string welding machine is provided. The battery cell string welding machine includes the pressing device of the above embodiment.

[0076] In this example, the pressing device of the present application includes a mounting mechanism 1 and a pressing rod 22. Among them, the mounting mechanism 1 includes a plurality of mounting rows 11 arranged at intervals, the pressing rod 22 straddles two adjacent mounting rows 11, the two ends of the pressing rod 22 correspond to the positions of two adjacent mounting rows 11 respectively, and at least one of the two ends of the pressing rod 22 is detachably connected to the corresponding mounting row 11 to adjust the position of the pressing rod 22 on the mounting row 11. The side surface of the pressing rod 22 is adapted to press the workpiece to be pressed. The pressing rod 22 straddles two adjacent mounting rows 11, the two ends of the pressing rod 22 correspond to the positions of two adjacent mounting rows 11 respectively, and at least one of the two ends of the pressing rod 22 is detachably connected to the corresponding mounting row 11 to adjust the position of the pressing rod 22 on the mounting row 11, so as to be able to adapt to different types of workpieces to be pressed and improve the applicability of the pressing device.

[0077] In this example, the cell string welding machine further includes a loading device adapted to pick up materials from a storage bin, a glue printing device adapted to screen-print and dispense glue on the surface of a silicon wafer. A first transfer mechanism is further provided between the glue printing device and the loading device, and the first transfer mechanism is adapted to transfer the silicon wafer of the loading device to the glue printing device. A solder tape processing device is located on one side of the glue printing device, and the solder tape processing device can cover the solder tape on the silicon wafer with surface-dispensed glue, and the solder tape corresponds to the glue dispensing position so that the solder tape can be adhered to the silicon wafer. A welding device is located on one side of the solder tape processing device, and the welding device is adapted to weld the solder tape to the silicon wafer to fabricate a cell. A detection device is adapted to detect the fabricated cell after welding is completed.

[0078] Among them, before the welding device welds the solder tape to the surface of the silicon wafer, the pressing device of the present application can first press the solder tape against the surface of the silicon wafer and perform a photocuring or heat curing operation to fix the solder tape on the surface of the silicon wafer, so as to facilitate welding the solder tape to the silicon wafer.

[0079] In the above embodiments, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. For the sake of brevity of the description, they will not be elaborated here.

[0080] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A pressing device, characterized in that, Comprising: An installation mechanism, including a plurality of installation rows arranged at intervals; A pressure rod, the pressure rod straddling two adjacent installation rows, the two ends of the pressure rod corresponding to the positions of the two adjacent installation rows respectively, at least one of the two ends of the pressure rod being detachably connected to the corresponding installation row to adjust the position of the pressure rod on the installation row, and the side surface of the pressure rod being adapted to press a piece to be pressed.

2. The pressing device according to claim 1, wherein, A plurality of installation parts are arranged at intervals in the running direction of the installation row, the installation parts being detachably connected to the installation row, and one of the two ends of the pressure rod being connected to the installation part.

3. The pressing device according to claim 2, wherein The installation row is provided with a plurality of installation holes, and the installation parts are detachably installed in the installation holes.

4. The pressing device according to claim 3, characterized in that, The installation part includes a movable part and a first elastic part, the pressure rod is connected to the movable part, the movable part is slidably arranged in the installation hole, the first elastic part is located in the installation hole, and the first elastic part is adapted to form an elastic force along the pressing direction on the movable part.

5. The pressing device according to claim 4, wherein It further includes a limiting part, both ends of the movable part protruding out of the installation hole, the pressure rod being connected to one end of the movable part, the limiting part being located outside the installation hole, and the limiting part being connected to the other end of the movable part.

6. The pressing device according to claim 5, characterized in that, One end of the movable part forms a conical structure, and the top of the conical structure is connected to the pressure rod.

7. The pressing device according to claim 5, characterized in that The other end of the movable part forms a limiting groove, the limiting part is annular, and the limiting part is snap-fitted in the limiting groove.

8. The pressing device according to claim 4, characterized in that The movable part has a radial protrusion, the first elastic part is sleeved outside the movable part, one end of the first elastic part abuts against the radial protrusion, and the other end of the first elastic part abuts against the bottom of the installation hole.

9. The pressing device according to claim 1, characterized in that, It includes at least one group of the pressure rods arranged along the running direction of the installation row, and each group of the pressure rods includes two pressure rods arranged at intervals.

10. The pressing device according to claim 1, characterized in that A through hole is formed between two adjacent installation rows, and the through hole is adapted to expose the piece to be pressed.

11. The pressing device according to claim 10, characterized in that, It further includes a pressing and positioning part, the pressing and positioning part being connected to the installation mechanism, and the pressing and positioning part being located outside the through hole along the running direction of the installation row.

12. The pressing device according to claim 11, wherein, The pressing and positioning part is slidably connected to the installation mechanism.

13. The pressing device according to claim 11, characterized in that, A second elastic part is arranged between the pressing and positioning part and the installation mechanism.

14. A cell string welding machine, characterized in that, Comprising a pressing device according to any one of claims 1 to 13.

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