Battery string storage rack and string welding machine

Abstract

The present application provides a battery string storage rack and a string welding machine, wherein the battery string storage rack comprises a mounting bracket, a fixed bearing plate, a first sliding bearing plate, a first driving mechanism, a second sliding bearing plate and a second driving mechanism. The fixed bearing plate is fixedly arranged on the mounting bracket; the first sliding bearing plate is slidably connected to the mounting bracket, and the first driving mechanism is used to drive the first sliding bearing plate to translate, so that the first sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate. The second sliding bearing plate is slidably connected to the mounting bracket, and the second driving mechanism is used to drive the second sliding bearing plate to translate, so that the second sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate. In the battery string storage rack of the present application, the fixed bearing plate, the first sliding bearing plate and the second sliding bearing plate are arranged in three layers on the mounting bracket, and the first sliding bearing plate and the second sliding bearing plate can be retracted under the fixed bearing plate to reduce the space occupied by the battery string storage rack.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell production, and specifically to a battery string storage rack and a string welding machine. Background Art

[0002] After the battery cells are welded into strings, the battery strings need to be inspected and different types of battery strings need to be stored separately. In addition, in order to prevent direct contact between stacked battery strings, which may cause damage to the surface of the battery cells, a piece of isolation paper needs to be stacked between adjacent battery strings.

[0003] In order to complete the classified storage of different types of battery strings and supply isolation paper during the storage process, different types of storage racks are arranged on the same plane, occupying a large area and having low space utilization. Utility Model Content

[0004] In view of the above problems existing in the traditional battery cell unloading mechanism, the present application provides a battery cell unloading mechanism, and its detailed technical solution is as follows:

[0005] A battery string storage rack comprises a mounting bracket, a fixed bearing plate, a first sliding bearing plate, a first driving mechanism, a second sliding bearing plate and a second driving mechanism, wherein:

[0006] The fixed bearing plate is fixedly arranged on the mounting bracket;

[0007] The first sliding bearing plate is slidably connected to the mounting bracket, and the first driving mechanism is arranged on the mounting bracket, and the first driving mechanism is used to drive the first sliding bearing plate to translate, so that the first sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate;

[0008] The second sliding bearing plate is slidably connected to the mounting bracket, and the second driving mechanism is arranged on the mounting bracket. The second driving mechanism is used to drive the second sliding bearing plate to translate, so that the second sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate.

[0009] The battery string storage rack provided by the present application has a fixed carrier plate, a first sliding carrier plate and a second sliding carrier plate arranged in three layers on a mounting bracket, and the first sliding carrier plate and the second sliding carrier plate can be retracted under the fixed carrier plate, thereby reducing the space occupied by the battery string storage rack. The fixed carrier plate, the first sliding carrier plate and the second sliding carrier plate can respectively store two different types of battery strings and isolation papers.

[0010] In some embodiments, the mounting bracket includes a first mounting bracket and a second mounting bracket, wherein: a fixed supporting plate is fixedly arranged on the top of the first mounting bracket; both ends of the first mounting bracket are respectively provided with transversely arranged first slide rails, and both ends of the first sliding supporting plate are respectively slidably connected to one of the first slide rails, and a first driving mechanism is arranged on the first mounting bracket, and the first driving mechanism drives the first sliding supporting plate to slide along the two first slide rails, so that the first sliding supporting plate moves outwardly out of the vertical projection range of the fixed supporting plate; the second mounting bracket is arranged below the second sliding supporting plate, and the top of the second mounting bracket is provided with a transversely arranged second slide rail, and the second sliding supporting plate is slidably connected to the second slide rail, and the second driving mechanism is arranged on the second mounting bracket, and the second driving mechanism drives the second sliding supporting plate to slide along the second slide rail, so that the second sliding supporting plate moves outwardly out of the vertical projection range of the fixed supporting plate.

[0011] The mounting bracket is composed of a first mounting bracket and a second mounting bracket, wherein a fixed supporting plate, a first sliding supporting plate and a first driving mechanism are mounted on the first mounting bracket, and the second sliding supporting plate and the second driving mechanism are arranged on the second mounting bracket. Such an arrangement can provide sufficient installation space for the first driving mechanism and the second driving mechanism, prevent the first driving mechanism and the second driving mechanism from interfering with each other during the driving process, and facilitate the maintenance of the first driving mechanism and the second driving mechanism.

[0012] In some embodiments, the first mounting frame includes a first support plate and a second support plate, and the two ends of the fixed supporting plate are respectively fixedly connected to the top ends of the first support plate and the second support plate; a first sliding rail is respectively provided on the inner sides of the first support plate and the second support plate; the first driving mechanism is provided on at least one of the first support plate and the second support plate and is transmission-connected to at least one end of the first sliding supporting plate.

[0013] By configuring the first mounting frame to include a first support plate and a second support plate, and respectively arranging a first slide rail on the inner sides of the first support plate and the second support plate, it can be ensured that the first sliding support plate is slidably installed on the first mounting frame in a horizontal state, and a sufficiently large avoidance space is formed in the first mounting frame to avoid the second mounting frame.

[0014] In some embodiments, the second mounting frame includes a mounting seat, a third support plate and a fourth support plate, wherein the third support plate and the fourth support plate are relatively arranged at two ends of the mounting seat; a second slide rail is arranged on the top of each of the third support plate and the fourth support plate.

[0015] By setting the second mounting frame, it is ensured that the second sliding bearing plate is slidably mounted on the second mounting frame in a horizontal state.

[0016] In some embodiments, the second driving mechanism includes a driving member and a connecting plate, wherein the driving member is arranged on the mounting seat, the lower end of the connecting plate is connected to the driving end of the driving member, and the upper end of the connecting plate is fixedly connected to the bottom of the second sliding bearing plate, and the driving member is used to drive the connecting plate to translate.

[0017] The second sliding bearing plate is driven to slide along the second sliding rail.

[0018] The second driving mechanism is arranged below the second sliding bearing plate, so it can be connected to the middle position of the second sliding bearing plate through the connecting plate, thereby improving the driving stability of the second sliding bearing plate.

[0019] In some embodiments, one of the fixed supporting plate, the first sliding supporting plate, and the second sliding supporting plate is used to support the isolation paper, the supporting surface of the supporting plate for supporting the isolation paper is a plane, and at least one paper stop column is arranged on each length side edge of the supporting plate for supporting the isolation paper.

[0020] By arranging a paper stop column on the length side of the supporting plate that supports the release paper, the release paper is blocked and limited, so as to prevent the release paper below from being taken out when the release paper at the top is taken out.

[0021] The present application also provides a string welding machine, which includes a solder strip feeding mechanism, a battery cell feeding mechanism, a serial connection conveying mechanism, a serial connection mechanism, a battery string transporting mechanism and a battery string storage rack as described in any of the above items, the solder strip feeding mechanism and the battery cell feeding mechanism stack the solder strip and N battery cells on the welding conveying mechanism, the welding conveying mechanism transports the stacked solder strip and battery cells to the serial connection station; the serial connection mechanism serially connects the solder strip and battery cells together to obtain a battery string; the battery string transporting mechanism is used to pick up the battery string from the serial connection conveying mechanism, and place the picked up battery string on the fixed carrier plate or the second sliding carrier plate; after each battery string is placed on the fixed carrier plate or the second sliding carrier plate, the battery string transporting mechanism is also used to pick up a piece of isolation paper from the first sliding carrier plate, and stack the picked up isolation paper on the battery string.

[0022] Through the cooperation of the welding ribbon feeding mechanism, the battery cell feeding mechanism, the serial connection conveying mechanism, the serial connection mechanism, and the battery string handling mechanism, the string welding machine provided by the present application realizes the automatic stringing operation of the battery cells. In addition, by setting up a battery string storage rack, the string welding machine of the present application realizes the classified storage of the battery strings, and places isolation paper between the adjacent battery strings.

[0023] In some embodiments, the string welding machine also includes a battery string detection mechanism, wherein: after the battery string transport mechanism picks up the battery string from the string conveying mechanism, it transports the battery string to the side of the battery string detection mechanism, and the battery string detection mechanism is used to detect the battery string to determine whether the battery string is a first type of battery string or a second type of battery string; the battery string transport mechanism places the first type of battery string on a fixed supporting plate, and places the second type of battery string on a second sliding supporting plate.

[0024] By setting up a battery string detection mechanism, automatic detection and classification of battery strings are achieved.

[0025] In some embodiments, the battery string detection mechanism includes an EL detection camera, and the battery string handling mechanism is also used to energize the picked-up battery strings.

[0026] After the battery string transport mechanism picks up the battery string from the string conveying mechanism, it energizes the battery string, and then transports the energized battery string to the side of the EL inspection camera. The EL inspection camera acquires an infrared image of the battery string to perform quality inspection on the battery string, and divides the battery strings into two categories based on the inspection results, such as qualified battery strings and unqualified battery strings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the battery string storage rack in the embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the side structure of the battery string storage rack in the embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the battery string storage rack in the embodiment of the present application after the fixed bearing plate is omitted;

[0030] Figure 4 It is a schematic diagram of the top view of the battery string storage rack in the embodiment of the present application;

[0031] Figure 5 for Figure 4 AA section view.

[0032] Figures 1 to 5 Included:

[0033] Mounting bracket 1:

[0034] The first mounting frame 11: a first supporting plate 111 and a second supporting plate 112;

[0035] The second mounting frame 12 includes a mounting seat 121, a third supporting plate 122, and a fourth supporting plate 123;

[0036] A first slide rail 13;

[0037] A second slide rail 14;

[0038] Fixing the bearing plate 2;

[0039] A first sliding bearing plate 3;

[0040] A first driving mechanism 4;

[0041] A second sliding bearing plate 5;

[0042] The second driving mechanism 6 includes a driving member 61 and a connecting plate 62 . DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] like Figures 1 to 5 As shown, the battery string storage rack in the embodiment of the present application includes a mounting bracket 1, a fixed bearing plate 2, a first sliding bearing plate 3, a first driving mechanism 4, a second sliding bearing plate 5 and a second driving mechanism 6, wherein:

[0045] The fixed bearing plate 2 is fixedly arranged on the mounting bracket 1 .

[0046] The first sliding support plate 3 is slidably connected to the mounting bracket 1. The first driving mechanism 4 is arranged on the mounting bracket 1. The first driving mechanism 4 is used to drive the first sliding support plate 3 to translate so that the first sliding support plate 3 moves outward from the vertical projection range of the fixed support plate 2.

[0047] The second sliding bearing plate 5 is slidably connected to the mounting bracket 1, and the second driving mechanism 6 is arranged on the mounting bracket 1. The second driving mechanism 6 is used to drive the second sliding bearing plate 5 to translate, so that the second sliding bearing plate 6 moves outwardly out of the vertical projection range of the fixed bearing plate 2.

[0048] After the first sliding bearing plate 3 and the second sliding bearing plate 5 move outwardly out of the vertical projection range of the fixed bearing plate 2, they can receive the battery string or the isolation paper. After receiving the battery string or the isolation paper, the first sliding bearing plate 3 and the second sliding bearing plate 5 slide back to the vertical projection range of the fixed bearing plate 2, that is, retract to the bottom of the bearing plate 2.

[0049] The battery string storage rack provided in the present application includes a fixed carrier plate 2, a first sliding carrier plate 3, and a second sliding carrier plate 5 arranged in three layers, two of which can implement the separation of two types of battery strings, and the remaining one can be used to store isolation paper. For example, the fixed carrier plate 2, the first sliding carrier plate 3, and the second sliding carrier plate 5 are arranged in sequence from top to bottom, the fixed carrier plate 2 is used to carry the first type of battery string, the first sliding carrier plate 3 is used to carry the isolation paper, and the second sliding carrier plate 5 is used to carry the second type of battery string.

[0050] Since the first sliding support plate 3 and the second sliding support plate 5 can be retracted under the fixed support plate 1, the space occupied by the battery string storage rack is reduced.

[0051] like Figure 2 As shown, optionally, the mounting bracket 1 includes a first mounting frame 11 and a second mounting frame 12 .

[0052] The fixed bearing plate 2 is fixedly arranged on the top of the first mounting frame 11 .

[0053] Both ends of the first mounting frame 11 are respectively provided with transversely arranged first slide rails 13, and both ends of the first sliding bearing plate 3 are respectively slidably connected to one of the first slide rails 13. The first driving mechanism 4 is arranged on the first mounting frame 11, and the first driving mechanism 4 is used to drive the first sliding bearing plate 3 to slide along the two first slide rails 13, so that the first sliding bearing plate 3 moves outwardly out of the vertical projection range of the fixed bearing plate 2, or retracts inwardly into the vertical projection range of the fixed bearing plate 2.

[0054] The second mounting frame 12 is arranged below the second sliding supporting plate 5, and a second slide rail 14 is arranged on the top of the second mounting frame 12 in a transverse direction. The second sliding supporting plate 5 is slidably connected to the second slide rail 14. The second driving mechanism 6 is arranged on the second mounting frame 12, and the second driving mechanism 6 is used to drive the second sliding supporting plate 5 to slide along the second slide rail 14, so that the second sliding supporting plate 5 moves outwardly out of the vertical projection range of the fixed supporting plate 2, or retracts inwardly into the vertical projection range of the fixed supporting plate 2.

[0055] The mounting bracket 1 is divided into a first mounting frame 11 and a second mounting frame 12, which provides sufficient mounting space for the first driving mechanism 4 and the second driving mechanism 6, prevents the first driving mechanism 4 and the second driving mechanism 6 from interfering with each other during the driving process, and facilitates the maintenance of the first driving mechanism 4 and the second driving mechanism 5. The two ends of the first sliding bearing plate 3 are respectively slidably connected to one of the first slide rails 13 to ensure the sliding stability of the first sliding bearing plate 3 and prevent the first sliding bearing plate 3 from deflecting during the sliding process. Similarly, the second sliding bearing plate 5 is slidably connected to the second slide rail 14, which ensures the sliding stability of the second sliding bearing plate 5 and prevents the second sliding bearing plate 5 from deflecting during the sliding process.

[0056] Continue to refer Figure 2As shown, optionally, the first mounting frame 11 includes a first support plate 111 and a second support plate 112, and the two ends of the fixed support plate 2 are respectively fixedly connected to the top ends of the first support plate 111 and the second support plate 112. A first slide rail 13 is respectively arranged on the inner sides of the first support plate 111 and the second support plate 112. The first driving mechanism 4 is arranged on the first support plate 111 and is transmission-connected to the first end of the first sliding support plate 3. Of course, the first driving mechanism 4 can also be arranged with a second support plate 112 and is transmission-connected to the second end of the first sliding support plate 3. Alternatively, the first driving mechanism 4 is arranged on both the first support plate 111 and the second support plate 112, and the first driving mechanism 4 synchronously drives the first sliding support plate 3 to slide from both ends.

[0057] The first driving mechanism 4 may be, for example, a cylinder, a telescopic rod of which is connected to the end of the first sliding supporting plate 3 , thereby driving the first sliding supporting plate 3 to slide.

[0058] By configuring the first mounting frame 11 to include a first support plate 111 and a second support plate 112, and providing a first slide rail 13 on the inner sides of the first support plate 111 and the second support plate 112 respectively, it can be ensured that the first sliding support plate 3 is stably installed on the first mounting frame 11 in a horizontal state, and a sufficiently large avoidance space is formed in the first mounting frame 11 to avoid the second mounting frame 12.

[0059] In one implementation, the first mounting frame 11 can also be a rod-shaped structure such as a support leg or a structure such as a frame. For example, the first support plate 111 and the second support plate 112 are both replaced with support legs, and the first slide rail 13 is installed on the support legs. Alternatively, the first support plate 111 and the second support plate are both replaced with a support frame, and the first slide rail 13 is installed on the support frame.

[0060] Continue to refer Figure 2 As shown, optionally, the second mounting frame 12 includes a mounting seat 121, a third support plate 122 and a fourth support plate 123, wherein the third support plate 122 and the fourth support plate 123 are relatively arranged at two ends of the mounting seat 121. A second slide rail 14 is arranged on the top of each of the third support plate 122 and the fourth support plate 123. Such an arrangement ensures that the second sliding bearing plate 5 is stably mounted on the second mounting frame 12 in a horizontal state.

[0061] Optional, such as Figures 2 to 4 As shown, the second driving mechanism 6 includes a driving member 61 and a connecting plate 62, wherein the driving member 61 is arranged on the mounting seat 121, the lower end of the connecting plate 62 is connected to the driving end of the driving member 61, and the upper end of the connecting plate 62 is fixedly connected to the bottom of the second sliding supporting plate 5, and the driving member 61 is used to drive the connecting plate 62 to translate, so as to drive the second sliding supporting plate 5 to slide along the second slide rail 14.

[0062] Since the second driving mechanism 61 is disposed below the second sliding carrier plate 5, it can be connected to the middle position of the bottom of the second sliding carrier plate 5 through the connecting plate 62, thereby improving the driving stability of the second sliding carrier plate. The second driving mechanism 6 can be, for example, a cylinder, and the telescopic rod of the cylinder is connected to the lower end of the connecting plate 62.

[0063] Optionally, the fixed carrier plate, the first sliding carrier plate, and the second sliding carrier plate are used to carry the release paper. Figure 2 and Figure 3 As shown, the first sliding carrier plate 3 is used for release paper, and its bearing surface is a plane, and at least one paper stop column 31 is provided on each length side of the first sliding carrier plate 3. The paper stop column 31 realizes the blocking and limiting of the release paper, preventing the release paper below from being taken out when the release paper at the top is taken out.

[0064] In one implementation, the paper stop column 31 is installed on the first sliding support plate 3 through a waist hole, and the position of the paper stop column 31 relative to the first sliding support plate is adjustable to accommodate the placement of different isolation papers, while also enabling adjustment of the reserved space above the paper stop column 31.

[0065] The present application also provides a string welding machine, which includes a welding strip feeding mechanism, a battery cell feeding mechanism, a serial connection conveying mechanism, a serial connection mechanism, a battery string transporting mechanism and a battery string storage rack provided by any of the above embodiments, wherein the welding strip feeding mechanism and the battery cell feeding mechanism stack the welding strip and N battery cells on the welding conveying mechanism, and the welding conveying mechanism transports the stacked welding strip and battery cells to the serial connection station. The serial connection mechanism connects the welding strip and the battery cells in series to obtain a battery string. The battery string transporting mechanism is used to pick up the battery string from the serial connection conveying mechanism, and place the picked-up battery string on the fixed carrier plate or the second sliding carrier plate. After each battery string is placed on the fixed carrier plate or the second sliding carrier plate, the battery string transporting mechanism is also used to pick up a piece of isolation paper from the first sliding carrier plate, and stack the picked-up isolation paper on the battery string.

[0066] Through the cooperation of the welding ribbon feeding mechanism, the battery cell feeding mechanism, the serial connection conveying mechanism, the serial connection mechanism, and the battery string handling mechanism, the string welding machine provided by the present application realizes the automatic stringing operation of the battery cells. In addition, by setting up a battery string storage rack, the string welding machine of the present application realizes the classified storage of the battery strings, and places isolation paper between the adjacent battery strings.

[0067] Optionally, the string welding machine in the embodiment of the present application further includes a battery string detection mechanism, wherein: after the battery string transport mechanism picks up the battery string from the serial connection conveying mechanism, it transports the battery string to the side of the battery string detection mechanism, and the battery string detection mechanism is used to detect the battery string to determine whether the battery string is a first type of battery string or a second type of battery string. The battery string transport mechanism places the first type of battery string on the fixed carrier plate and places the second type of battery string on the second sliding carrier plate.

[0068] By setting up a battery string detection mechanism, automatic detection and classification of battery strings are achieved. Among them, the first type of battery string can be, for example, a qualified battery string detected and confirmed by the battery string detection mechanism, and the second type of battery string is an unqualified battery string detected and confirmed by the battery string detection mechanism, so that the battery cells of the qualified battery string and the unqualified battery string are stored separately. Generally speaking, the number of qualified battery strings is much larger than the number of unqualified battery strings. Therefore, choosing to store the qualified battery strings on the top fixed carrier plate that does not require sliding control can greatly improve the storage efficiency of the battery strings.

[0069] Optionally, the battery string detection mechanism includes an EL detection camera, and the battery string transport mechanism is also used to energize the picked-up battery string. After the battery string transport mechanism picks up the battery string from the string conveying mechanism, it energizes the battery string, and then transports the energized battery string to the side of the EL detection camera. The EL detection camera acquires an infrared image of the battery string to perform quality inspection on the battery string, and classifies the battery string into two categories based on the inspection results, such as qualified battery strings and unqualified battery strings.

[0070] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A battery string storage rack, characterized in that: The battery string storage rack includes a mounting bracket, a fixed bearing plate, a first sliding bearing plate, a first driving mechanism, a second sliding bearing plate and a second driving mechanism, wherein: The fixed bearing plate is fixedly arranged on the mounting bracket; The first sliding bearing plate is slidably connected to the mounting bracket, the first driving mechanism is disposed on the mounting bracket, and the first driving mechanism is used to drive the first sliding bearing plate to translate, so that the first sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate; The second sliding support plate is slidably connected to the mounting bracket, the second driving mechanism is arranged on the mounting bracket, and the second driving mechanism is used to drive the second sliding support plate to translate so that the second sliding support plate moves outwardly out of the vertical projection range of the fixed support plate.

2. The battery string storage rack according to claim 1, characterized in that: The mounting bracket comprises a first mounting bracket and a second mounting bracket, wherein: The fixed bearing plate is fixedly arranged on the top of the first mounting frame; Both ends of the first mounting frame are respectively provided with first sliding rails arranged transversely, and both ends of the first sliding bearing plate are respectively slidably connected to one of the first sliding rails, and the first driving mechanism is arranged on the first mounting frame, and the first driving mechanism drives the first sliding bearing plate to slide along the two first sliding rails, so that the first sliding bearing plate moves outwardly out of the vertical projection range of the fixed bearing plate; The second mounting frame is arranged below the second sliding supporting plate, a second horizontally arranged slide rail is arranged on the top of the second mounting frame, the second sliding supporting plate is slidably connected to the second slide rail, the second driving mechanism is arranged on the second mounting frame, and the second driving mechanism drives the second sliding supporting plate to slide along the second slide rail so that the second sliding supporting plate moves outwardly out of the vertical projection range of the fixed supporting plate.

3. The battery string storage rack according to claim 2, characterized in that: The first mounting frame includes a first supporting plate and a second supporting plate, and two ends of the fixed bearing plate are respectively fixedly connected to the top ends of the first supporting plate and the second supporting plate; The first support plate and the second support plate are respectively provided with a first slide rail on their inner sides; The first driving mechanism is disposed on at least one of the first supporting plate and the second supporting plate and is drivingly connected to at least one end of the first sliding bearing plate.

4. The battery string storage rack according to claim 2, characterized in that: The second mounting frame comprises a mounting seat, a third support plate and a fourth support plate, wherein the third support plate and the fourth support plate are arranged oppositely at two ends of the mounting seat; A second slide rail is disposed on the top of each of the third support plate and the fourth support plate.

5. The battery string storage rack according to claim 4, characterized in that: The second driving mechanism includes a driving member and a connecting plate, wherein the driving member is arranged on the mounting seat, the lower end of the connecting plate is connected to the driving end of the driving member, and the upper end of the connecting plate is fixedly connected to the bottom of the second sliding supporting plate, and the driving member is used to drive the connecting plate to translate, so as to drive the second sliding supporting plate to slide along the second slide rail.

6. The battery string storage rack according to claim 1, characterized in that: One of the fixed supporting plate, the first sliding supporting plate and the second sliding supporting plate is used for supporting the release paper, the supporting surface of the supporting plate for supporting the release paper is a plane, and at least one paper stop column is arranged on each length side edge of the supporting plate for supporting the release paper.

7. The battery string storage rack according to claim 1, characterized in that: The fixed bearing plate, the first sliding bearing plate, and the second sliding bearing plate are arranged in sequence from top to bottom. The fixed bearing plate is used to carry the first type of battery string, the first sliding bearing plate is used to carry the isolation paper, and the second sliding bearing plate is used to carry the second type of battery string.

8. A string welding machine, characterized in that: The stringer comprises a welding ribbon feeding mechanism, a battery cell feeding mechanism, a stringing conveying mechanism, a stringing mechanism, a battery string transporting mechanism and a battery string storage rack according to any one of claims 1 to 7, The solder strip feeding mechanism and the battery cell feeding mechanism stack the solder strip and N battery cells on the welding conveying mechanism, and the welding conveying mechanism conveys the stacked solder strip and battery cells to the serial connection station; The serial connection mechanism connects the welding strips and the battery cells in series to obtain a battery string; The battery string transport mechanism is used to pick up the battery string from the string conveying mechanism, and place the picked-up battery string on the fixed carrier plate or the second sliding carrier plate; After each battery string is placed on the fixed carrier plate or the second sliding carrier plate, the battery string transport mechanism is further used to pick up a piece of isolation paper from the first sliding carrier plate and stack the picked isolation paper on the battery string.

9. The stringer according to claim 8, characterized in that: The string welding machine also includes a battery string detection mechanism, wherein: After picking up the battery string from the string connection conveying mechanism, the battery string transporting mechanism transports the battery string to the side of the battery string detection mechanism, and the battery string detection mechanism is used to detect the battery string to determine whether the battery string is a first type battery string or a second type battery string; The battery string transport mechanism places the first type of battery string on the fixed carrier plate, and places the second type of battery string on the second sliding carrier plate.

10. The stringer according to claim 9, characterized in that: The battery string detection mechanism includes an EL detection camera, and the battery string transport mechanism is also used to energize the picked-up battery string.

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