Battery string production equipment

Abstract

The utility model provides battery string production equipment. The battery string production equipment comprises a battery piece feeding device, a battery piece moving device, a welding strip feeding device, a welding strip positioning device, a receiving and conveying device and a series connection device, the receiving and conveying device comprises a receiving table, and a negative pressure adsorption part is arranged on the receiving table; the welding strip feeding device comprises a welding strip transferring device, and the series connection device is arranged on the series connection station. The battery piece feeding device is used for feeding a plurality of battery pieces of which the edges are close to each other or overlapped, the battery piece moving device is used for moving the battery pieces of which the edges are close to each other or overlapped to the receiving and conveying device, and the welding strip feeding device is used for integrally feeding welding strips required by the battery pieces. The welding strip positioning device completes the determination of the relative position of the welding strip and the battery piece; the receiving and conveying device conveys the positioned welding strips and the battery pieces to the series connection device integrally, and the series connection device completes integral series connection of the battery pieces with the edges close to each other or placed in an overlapped mode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic cell string production, and in particular to a cell string production device. BACKGROUND

[0002] The positive and negative electrodes of the back contact cell are located on the back of the cell. Unlike the structure of the traditional solar cell with electrodes on both the front and back surfaces, this unique design reduces the shading of the front electrode to sunlight, so that more sunlight can be irradiated to the effective absorption layer of the cell, thereby improving the photoelectric conversion efficiency of the cell.

[0003] However, in the back contact cell string, the welding ribbons connecting the positive electrodes of the cell and the welding ribbons connecting the negative electrodes of the cell are arranged in a staggered manner along the length direction of the welding ribbons on the same cell, and the welding ribbons cannot be uniformly pulled for feeding. The traditional method adopts two groups of welding ribbon handles, one group of welding ribbons corresponding to the positive electrodes of the cell and the other group of welding ribbons corresponding to the negative electrodes of the cell, and sequentially pulls the welding ribbons, and then places the welding ribbon groups and the cells in a one-to-one correspondence, thereby completing the feeding of multiple welding ribbon groups required for a cell string.

[0004] This method is low in efficiency and cannot meet the production requirements of high-efficiency cell strings. CONTENT OF THE INVENTION

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a cell string production device to improve the production efficiency of the back contact cell string.

[0006] The present application provides a cell string production device, which comprises a cell feeding device, a cell moving device, a welding ribbon feeding device, a welding ribbon positioning device, a receiving conveying device, and a stringing device. The cell feeding device is used to provide multiple cells, and the edges of adjacent two cells are placed close to or overlapped. The receiving conveying device comprises a receiving table, and a negative pressure suction accessory is arranged on the receiving table. The suction accessory is used to adsorb and position the cells. Each receiving table is used to receive one cell. The cell moving device is used to move the cells provided by the cell feeding device to the receiving conveying device at the receiving station, and place the cells one by one on the receiving tables. The welding ribbon feeding device comprises a welding ribbon moving device, which is used to move multiple parallel arranged welding ribbons to the cells on the receiving tables at the receiving station. The welding ribbon positioning device is used to position the welding ribbons on the cells on the receiving tables. The receiving conveying device receives the overlapped welding ribbons and cells at the receiving station, and conveys the welding ribbons and cells to the stringing station. The stringing device is arranged at the stringing station, and is used to string the welding ribbons and cells into a cell string. The receiving conveying device is further configured to convey the stringed cell string to a discharging station, and return to the receiving station after discharging.

[0007] The battery piece feeding device is used to feed the battery pieces with edges close to or overlapped, the battery piece moving device is used to move the battery pieces with edges close to or overlapped to the receiving conveying device, the welding strip feeding device is used to feed the welding strips required by the battery pieces, and the welding strip positioning device is used to determine the relative positions of the welding strips and the battery pieces.

[0008] Optionally, the battery string production equipment further comprises a cutting device, and the cutting device comprises a cutting head arranged downward to cut the predetermined position of the welding strip arranged on the adjacent two battery pieces.

[0009] Optionally, the battery string production equipment further comprises a welding strip bending device, and the welding strip bending device is located between the welding strip feeding device and the welding strip moving device, and is used to provide the welding strip provided by the welding strip feeding device to the welding strip moving device after bending; the welding strip bending device prepares a bending part on each odd-numbered welding strip at a predetermined distance along the length direction of the welding strip; and the welding strip bending device prepares a bending part on each even-numbered welding strip at a predetermined distance along the length direction of the welding strip, and the bending parts on the odd-numbered welding strip and the even-numbered welding strip are located at different positions in the length direction of the welding strip.

[0010] Optionally, the welding strip moving device comprises a welding strip shaping part, and the welding strip shaping part prepares a bending part on each odd-numbered welding strip at a predetermined distance along the length direction of the welding strip; and the welding strip shaping part prepares a bending part on each even-numbered welding strip at a predetermined distance along the length direction of the welding strip, and the bending parts on the odd-numbered welding strip and the even-numbered welding strip are located at different positions in the length direction of the welding strip.

[0011] Optionally, the receiving conveying device further comprises a receiving support, and the receiving tables are slidably connected to the receiving support through first sliding members; the adjacent receiving tables can be synchronously separated or approached relative to the receiving support, and the edge-overlapped battery pieces arranged on the receiving tables are separated when the receiving tables are synchronously separated.

[0012] Optionally, the receiving conveying device further comprises an angle adjusting member, and the receiving tables are installed on the first sliding members through the angle adjusting member, and the angle adjusting member is used to drive the angle adjustment of the receiving tables to realize the angle adjustment of the battery pieces on the receiving tables.

[0013] Optionally, the receiving conveying device further comprises a second sliding member, and the receiving support moves along the second sliding member to sequentially convey the overlapped battery pieces and the welding strips from the receiving station to the stringing station and the discharging station.

[0014] Optionally, the battery string production equipment also includes a feeding device, which is located after the stringing device. The feeding device includes a feeding moving part and a battery string picking part. The battery string picking part is installed on the movable end of the feeding moving part and is used to drive the battery string picking part to move in order to complete the feeding of the battery string; or, the feeding device also includes a pressing feeding part, which is installed on the movable end of the feeding moving part and is used to pick up the welding strip positioning device for feeding.

[0015] Optionally, the welding strip transfer device includes a welding strip pulling part and a welding strip tail positioning part; the welding strip pulling part is used to pull the free end of the welding strip and move the welding strip to the support platform for receiving the battery cell, and the welding strip tail positioning part is used to control the welding strip pulling the end of the welding strip away from the free end, so as to achieve the tensioning and positioning of the welding strip.

[0016] Optionally, the welding strip transfer device includes a welding strip transport section, which includes at least two rows of welding strip clamping heads, wherein one row of clamping heads is used to clamp the first end of the welding strip and the other row of clamping heads is used to clamp the second end of the welding strip.

[0017] Optionally, the cell feeding device includes a detection camera, a feeding component, a cell stacking hand, and a receiving component; the detection camera is used to detect the cells provided by the feeding component, and the cell stacking hand picks up the cells detected by the detection camera and places them close to or overlapped with the edges of the cells on the receiving component for the cell moving device to pick up.

[0018] Optionally, the cell moving device includes a mobile robotic arm and multiple cell picking components mounted on the movable end of the mobile robotic arm.

[0019] Optionally, each cell picker is mounted on a mobile robotic arm via an adjustment mechanism, which is used to adjust the angle of the cell.

[0020] Optionally, the battery string production equipment also includes a positioning camera, which is positioned above the receiving station and is used to detect the position of the battery cells on the receiving platform.

[0021] By setting up a positioning camera, the position of the battery cells is detected, which allows the ribbon transfer device to adjust the position of the ribbon according to the position of the battery cells, or to move the receiving platform to adjust the position of the battery cells to accommodate the placement of the ribbon, so as to achieve accurate stacking of the ribbon and battery cells.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0024] Figure 1 This is a schematic diagram of a battery string production device in one embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the arrangement of the bent welding strip and the battery cell in one embodiment of this application;

[0026] Figure 3 This is a schematic diagram of the welding strip bending device in one embodiment of this application;

[0027] Figure 4 This is a schematic diagram of the solder strip shaping section structure in one embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the receiving and conveying device structure in one embodiment of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Cell feeding device; 2. Cell moving device; 3. Welding strip feeding device; 4. Welding strip transfer device; 5. Receiving and conveying device; 6. Series connection device; 7. Support platform; 8. Pressing film; 9. Welding strip; 10. Welding strip shaping part; 11. Clamp; 12. Receiving platform; 13. First sliding member; 14. Receiving bracket; 15. First cell; 16. Second cell; 17. Third cell; 18. Fourth cell; 19. Fifth cell; 20. Odd-numbered welding strips; 21. Even-numbered welding strips; 22. Bending portion on the odd-numbered welding strip; 23. Bending portion on the even-numbered welding strip. Detailed Implementation

[0030] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0031] The present application will be described in detail below through specific embodiments.

[0032] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a battery string production apparatus to improve the production efficiency of back-contact battery strings.

[0035] A battery string production device, such as Figure 1 As shown, the battery string production equipment includes a battery cell feeding device 1, a battery cell moving device 2, a welding ribbon feeding device 3, a welding ribbon positioning device, a receiving and conveying device 5, and a stringing device 6. The battery cell feeding device 1 is used to provide multiple battery cells, with the edges of adjacent battery cells placed close together or overlapping. The receiving and conveying device 5 includes a receiving platform 12, on which a negative pressure adsorption element is provided. The adsorption element is used to adsorb and position the battery cells, and each receiving platform 12 is used to receive one battery cell. The battery cell moving device 2 is used to transfer the battery cells provided by the battery cell feeding device 1 to the receiving and conveying device 5 located at the receiving station, and to connect the battery cells one by one. The strips should be placed on the receiving platform 12; the welding strip feeding device 3 includes a welding strip transfer device 4, which is used to transfer multiple parallel welding strips to the battery cells on the receiving platform 12 at the receiving station, and a welding strip positioning device is used to position the welding strips on the battery cells on the receiving platform 12; the receiving and conveying device 5 receives the stacked welding strips and battery cells at the receiving station and conveys the welding strips and battery cells to the subsequent stringing station, and the stringing device 6 is set at the stringing station to string the welding strips and battery cells into battery strings; the receiving and conveying device 5 is also configured to convey the stringed battery strings to the unloading station and return to the receiving station after unloading is completed.

[0036] The cell feeding device 1 feeds multiple cells with their edges close together or overlapping. The cell moving device 2 moves the cells to the receiving and conveying device 5. The welding ribbon feeding device 3 feeds the welding ribbons required for the multiple cells. The welding ribbon positioning device determines the relative position of the welding ribbon and the cells. The receiving and conveying device 5 transports the positioned welding ribbon and cells to the stringing device 6. The stringing device 6 then completes the stringing of the multiple cells with their edges close together or overlapping.

[0037] Optionally, in one implementation, the welding strip positioning device can be a reusable pressure tool, which includes a frame and a pressure rod. The frame is provided with mounting holes, and the pressure rod is a columnar object. The pressure rod is mounted on the frame through the mounting holes and can move up and down relative to the frame. A spring is provided between the pressure rod and the frame, and the spring is used to elastically push the pressure rod downward.

[0038] In one implementation, the series connection device 6 can be one of an infrared heating lamp box, an LED lamp box, a UV lamp box, a hot air blower, or an electromagnetic heating device.

[0039] In one implementation, adjacent battery cells are placed close to or overlapping each other at their edges. Specifically, the first battery cell can be placed first, followed by the second battery cell, with the first edge of the second battery cell overlapping the second edge of the first battery cell. The third battery cell then overlaps the second edge of the second battery cell, and so on. The width of the overlapping portion of the battery cell edges can be greater than 0 mm and less than 20 mm. In another implementation, the width can be 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, 7 mm, 9 mm, 10 mm, 13 mm, 15 mm, or 18 mm, etc. Alternatively, multiple battery cells can be arranged sequentially, close to each other without overlapping, with the distance between the edges of adjacent battery cells being 1 mm, 2 mm, 3 mm, 4 mm...10 mm...20 mm.

[0040] This solution prepares the solder ribbons required for multiple cells or an entire battery string at once, directly aligning the solder ribbons with the battery cells. The positioning accuracy between the solder ribbons and the battery cells is high, and the stacking of the solder ribbons and battery cells for the entire battery string can be completed in one go, resulting in high production efficiency.

[0041] In one implementation, the battery string production equipment further includes a cutting device, which includes a cutting head that is positioned downwards to cut the solder strips placed on two adjacent battery cells at predetermined positions.

[0042] In one implementation, the cutting device can be a laser cutter, an ultrasonic cutter, or a scissor-type cutter with the blade pointing downwards.

[0043] In one implementation, the cutting device uses laser cutting, in which case the laser head is mounted on the moving module, or the laser head completes the cutting of the welding strip at multiple locations by scanning. To improve cutting efficiency, multiple laser heads can be set.

[0044] In one implementation, the cutting device includes an odd-numbered cutting assembly corresponding to the odd-numbered solder strips and an even-numbered cutting assembly corresponding to the even-numbered solder strips. The odd-numbered cutting assembly corresponding to the odd-numbered solder strips includes multiple slitting blade assemblies arranged along the length of the solder strips. Similarly, the even-numbered cutting assembly corresponding to the even-numbered solder strips also includes multiple slitting blade assemblies arranged along the length of the solder strips.

[0045] In one implementation, the cutting device is located at the pre-processing station of the series-connecting device 6, and cuts the solder ribbon positioned on the battery cell by the solder ribbon positioning device at a predetermined position; alternatively, the cutting device is located at the post-processing station of the series-connecting device 6, and cuts the solder ribbon in the series-connected battery string at a predetermined position. Specifically, it can be the odd-numbered solder ribbon between two adjacent battery cells or the even-numbered solder ribbon between adjacent battery cells.

[0046] In one implementation, the battery string production equipment further includes a ribbon bending device located at the station before the ribbon transfer device 4. The ribbon bending device bends the ribbon provided by the ribbon feeding device 3 and then provides it to the ribbon transfer device 4. The ribbon bending device prepares bent portions at predetermined intervals along the length of all odd-numbered ribbons; and it prepares bent portions at predetermined intervals along the length of all even-numbered ribbons. The bent portions on the odd-numbered and even-numbered ribbons are located at different positions along the length of the ribbons. In one implementation, bent portions can be prepared on both the odd-numbered and even-numbered ribbons at intervals of two battery cells. The bent portions on the odd-numbered and even-numbered ribbons are staggered along the length of the ribbons, with a stagger distance equal to the width of one battery cell.

[0047] Optionally, in one implementation, such as Figure 3 The welding strip bending device shown includes a support platform 7 and a pressing mold. The support platform 7 is provided with a protrusion, and the pressing mold is provided with a groove that mates with the protrusion. The pressing mold presses the welding strip 9 onto the protrusion on the support platform 7 to complete the shaping of the welding strip, so that a bent portion is prepared every two battery cells along the length direction of the welding strip.

[0048] Optionally, in one implementation, the ribbon bending device includes a clamp disposed above the ribbon, used to pull the ribbon to be bent upwards to create a bend every two cell widths along the length of the ribbon. Of course, the ribbon bending device in this application may also include other structures capable of performing the ribbon bending function.

[0049] Of course, the spacing can be adjusted adaptively according to the width of the solar cells and the distance between them.

[0050] In one implementation, such as Figure 4 As shown, the ribbon transfer device 4 includes a ribbon shaping section 10, which shapes all odd-numbered ribbons with bends at predetermined intervals along the length of the ribbon; and all even-numbered ribbons with bends at predetermined intervals along the length of the ribbon. The bends on the odd-numbered ribbons and the bends on the even-numbered ribbons are located at different positions along the length of the ribbon. In one implementation, the predetermined interval can be the width of every two solar cells, and the interval can be adaptively adjusted according to the width of the solar cells and the spacing between the solar cells.

[0051] Optionally, in one implementation, the ribbon shaping section 10 may also include a clamp 11 for pulling the ribbon upward at a predetermined position to create a bend at predetermined intervals along the length of the ribbon 9. Of course, the ribbon bending section in this application may also include other structures capable of achieving the ribbon bending function. For example, the ribbon may be pulled upward at the bending position every two cell widths.

[0052] The bending of the welding strip can be done in advance before the welding strip is transferred, or it can be done during the movement of the welding strip driven by the welding strip transfer device 4.

[0053] In one implementation, such as Figure 5 As shown, the receiving and conveying device 5 also includes a receiving bracket 14, and the receiving platform 12 is slidably connected to the receiving bracket 14 via the first sliding member 13; adjacent receiving platforms 12 can be synchronously separated or synchronously approached relative to the receiving bracket 14. When the receiving platforms 12 are synchronously separated, the edge-overlapping battery cells placed on the receiving platform 12 are separated.

[0054] In one implementation, the slider may include a slide rail.

[0055] In one implementation, the receiving and conveying device 5 further includes an angle adjustment component. The receiving platform 12 is mounted on the first sliding member 13 via the angle adjustment component. The angle adjustment component is used to drive the angle adjustment of the receiving platform 12, thereby adjusting the angle of the battery cells on the receiving platform 12. In another implementation, the angle adjustment component can be a rotary motor.

[0056] In one implementation, the receiving and conveying device 5 further includes a second sliding member, along which the receiving bracket 14 moves to sequentially convey the stacked battery cells and welding strips from the receiving station to the serial connection station and the unloading station.

[0057] In one implementation, the second slider can be a slide rail.

[0058] In one implementation, such as Figure 2 The welding strip transfer device places the welding strip with a bend onto the battery cell on the receiving and conveying device. The welding strip positioning device is placed on the receiving platform 12 to press the welding strip onto the battery cell, such that the bend 22 on the odd-numbered welding strip is located between the first battery cell 15, the second battery cell 16, the third battery cell 17, and the fourth battery cell 18. At the same time, the even-numbered welding strip 21 between the first battery cell 15, the second battery cell 16, the third battery cell 17, and the fourth battery cell 18 is set straight. The cutter cuts the first battery cell 15 and the second battery cell 18... The even-numbered solder strips 21 between the second, third, and fourth battery cells 16, 17, and 18 are cut; the bent portions 23 on the even-numbered solder strips are located between the second, third, fourth, and fifth battery cells 16 and 17, and 18 and 19, respectively; the odd-numbered solder strips 20 between the second, third, fourth, and fifth battery cells 16 and 17, and 18 and 19 are set straight, and the cutter cuts the odd-numbered solder strips 20 between the second, third, fourth, and fifth battery cells 16 and 19, and 18 and 19, respectively. Then, the receiving platforms move away from each other, straightening the bent portions 22 and 23 on the odd-numbered and even-numbered solder strips, thus separating the ends of the cut solder strips and preventing short circuits caused by contact between the separated solder strips. The bent portions 22 and 23 on the odd-numbered and even-numbered solder strips are offset by the distance of one battery cell in the length direction of the solder strips.

[0059] In one implementation, the battery string production equipment further includes a feeding device, which is located after the stringing device 6. The feeding device includes a feeding moving part and a battery string picking part. The battery string picking part is installed on the movable end of the feeding moving part and is used to drive the battery string picking part to move in order to complete the feeding of the battery string. Alternatively, the feeding device further includes a pressing feeding part, which is installed on the movable end of the feeding moving part and is used to pick up the welding strip positioning device and feed it.

[0060] In one implementation, the unloading moving component includes a moving module consisting of a motor and a slide rail. The battery string picking component includes a suction cup for adsorbing battery strings.

[0061] In one implementation, the die feeding component includes an electromagnet or a chuck.

[0062] In one implementation, the welding strip transfer device 4 includes a welding strip pulling part and a welding strip tail positioning part; the welding strip pulling part is used to pull the free end of the welding strip and move the welding strip to the support platform 7 for receiving the battery cells; the welding strip tail positioning part is used to control the welding strip pulling the end of the welding strip away from the free end. After the welding strip pulling the welding strip from the tail end to a length matching the produced battery string, the welding strip tail positioning part positions the tail end of the welding strip, thereby achieving the tensioning and positioning of the welding strip.

[0063] In one implementation, the welding strip transfer device 4 includes a welding strip transport section, which includes at least two rows of welding strip clamping heads. One row of clamping heads is used to clamp the first end of the welding strip, and the other row of clamping heads is used to clamp the second end of the welding strip. The welding strip transport section is driven by a lifting module and a horizontal module that reciprocates along the welding strip feeding direction. The lifting module and the horizontal module can be driven by a motor or a cylinder. Alternatively, the welding strip feeding device 3 includes at least a welding strip head clamp and a welding strip moving robotic arm. The welding strip moving robotic arm clamps one end of the welding strip and pulls the welding strip onto the receiving conveyor 5. After the welding strip positioning device positions the welding strip, the welding strip feeding device 3 releases the head of the welding strip, and the cutter cuts off the tail of the welding strip.

[0064] In one implementation, the cell feeding device 1 includes a detection camera, a feeding component, a cell stacking hand, and a receiving component; the detection camera is used to detect the cells provided by the feeding component, and the cell stacking hand picks up the cells at the position detected by the detection camera and places them close to or overlapped with the edges of the cells on the receiving component for the cell moving device 2 to pick up.

[0065] In one implementation, the feeding component includes a conveyor belt, rollers, and a support. The rollers are mounted on the support to support and drive the conveyor belt, which is used to receive and transport the solar cells. Alternatively, the feeding component includes a pallet and a track. The upper surface of the pallet is flat and is used to receive the solar cells. The pallet is mounted on the track and slides on the track to transport the solar cells.

[0066] In one implementation, the cell moving device 2 includes a mobile robotic arm and a plurality of cell picking components mounted on the movable end of the mobile robotic arm.

[0067] In one implementation, the mobile robotic arm that drives the suction cup to move consists of at least lifting and translation servo modules.

[0068] In one implementation, each cell picker is mounted on a mobile robotic arm via an adjustment mechanism, which is used to adjust the angle of the cell.

[0069] In one implementation, the adjusting element can be a rotary motor.

[0070] In one implementation, the battery string production equipment also includes a positioning camera, which is positioned above the receiving station and is used to detect the position of the battery cells on the receiving platform.

[0071] The positioning camera can be mounted above the receiving station using a camera mount. The positioning camera detects and positions the solar cells. By enabling the positioning camera to detect the position of the solar cells, the ribbon conveyor can adjust the position of the ribbon according to the position of the solar cells, or the receiving platform can be moved to adjust the position of the solar cells to accommodate the placement of the ribbon, ultimately achieving accurate stacking of the ribbon and solar cells.

[0072] This application pre-processes the battery cells using a battery cell feeding device, improving the feeding efficiency. The battery string production equipment provided in this application can feed the solder ribbons and battery cells required for multiple cells or an entire battery string at once. The solder ribbon positioning device enables overall positioning of the solder ribbon, preventing offset, and the stringing device allows for the stringing of multiple cells or an entire battery string, improving stringing efficiency.

[0073] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A battery string production device, characterized in that, The battery string production equipment includes a battery cell feeding device, a battery cell moving device, a welding strip feeding device, a welding strip positioning device, a receiving and conveying device, and a stringing device. The cell feeding device is used to provide multiple cells, with the edges of two adjacent cells close together or overlapping. The receiving and conveying device includes a receiving platform, on which a negative pressure adsorption element is provided. The adsorption element is used to adsorb and position the battery cell, and each receiving platform is used to receive one battery cell. The cell moving device is used to move the cells provided by the cell feeding device to the receiving and conveying device located at the receiving station, and to place the cells one by one onto the receiving platform. The welding strip feeding device includes a welding strip transfer device, which is used to transfer multiple parallel welding strips to the battery cells on the receiving platform at the receiving station. The welding strip positioning device is used to position the welding strip onto the battery cell of the receiving platform; The receiving and conveying device receives the stacked welding strips and battery cells at the receiving station and conveys them to the subsequent series connection station. The series connection device is installed at the series connection station, and the series connection device connects the welding strip and the battery cell into a battery string; The receiving and conveying device is also configured to convey the connected battery string to the unloading station and return it to the receiving station after unloading is completed.

2. The battery string production equipment according to claim 1, characterized in that, The battery string production equipment also includes a cutting device, which includes a cutting head that is positioned downwards to cut the solder strips placed on two adjacent battery cells. Cut off at the predetermined location.

3. The battery string production equipment according to claim 1, characterized in that, The battery string production equipment also includes a welding strip bending device, which is located at the station before the welding strip transfer device. The welding strip bending device is used to bend the welding strip and then provide it to the welding strip transfer device. The welding strip bending device creates bends at predetermined intervals along the length of all odd-numbered welding strips; and the welding strip bending device creates bends at predetermined intervals along the length of all even-numbered welding strips. The bends on the odd-numbered weld strips and the bends on the even-numbered weld strips are located at different positions along the length of the weld strips.

4. The battery string production equipment according to claim 1, characterized in that, The welding strip transfer device includes a welding strip shaping section, which prepares curved sections at predetermined intervals along the length direction of all odd-numbered welding strips; The strip shaping section prepares bends at predetermined intervals along the length of all even-numbered strips, with the bends on the odd-numbered strips and the bends on the even-numbered strips located at different positions along the length of the strips.

5. The battery string production equipment according to claim 1, characterized in that, The receiving and conveying device also includes a receiving bracket, and the receiving platform is slidably connected to the receiving bracket via a first sliding member; adjacent receiving platforms can be simultaneously separated or simultaneously approached relative to the receiving bracket. When the receiving platforms are simultaneously separated, the overlapping battery cells placed on the receiving platforms are separated.

6. The battery string production equipment according to claim 5, characterized in that, The receiving and conveying device also includes an angle adjustment component. The receiving platform is mounted on the first sliding member via the angle adjustment component. The angle adjustment component is used to drive the angle adjustment of the receiving platform to realize the angle adjustment of the battery cells on the receiving platform.

7. The battery string production equipment according to claim 5, characterized in that, The receiving and conveying device also includes a second sliding member, and the receiving bracket moves along the second sliding member to sequentially convey the stacked battery cells and welding strips from the receiving station to the serial connection station and the unloading station.

8. The battery string production equipment according to claim 1, characterized in that, The battery string production equipment also includes a feeding device, which is located after the stringing device. The feeding device includes a feeding moving component and a battery string picking component. The battery string picking component is installed on the movable end of the feeding moving component, and the feeding moving component drives the battery string picking component to move, thereby completing the feeding of the battery strings; or... The feeding device further includes a press-feeding component, which is installed at the movable end of the feeding moving component. The press blanking component is used to pick up and blank the welding strip positioning device.

9. The battery string production equipment according to claim 1, characterized in that, The welding strip transfer device includes a welding strip pulling part and a welding strip tail positioning part; The welding strip pulling part is used to pull the free end of the welding strip and move the welding strip to the support platform for receiving the battery cell. The welding strip tail positioning part is used to control the welding strip pulling part to pull the end of the welding strip away from the free end, so as to achieve the tensioning and positioning of the welding strip.

10. The battery string production equipment according to claim 1, characterized in that, The welding strip transfer device includes a welding strip conveying section, which includes at least two rows of welding strip clamping heads, one row of clamping heads being used to clamp the first end of the welding strip. Another row of clamps is used to hold the second end of the welding strip.

11. The battery string production equipment according to claim 1, characterized in that, The battery cell feeding device includes a detection camera, a feeding component, a battery cell stacking hand, and a receiving component. The detection camera is used to detect the battery cells provided by the feeding component. After the battery cell detected by the detection camera is picked up, the battery cell stacking hand places the edge of the battery cell close to or overlaps the battery cell on the receiving component for the battery cell moving device to pick up.

12. The battery string production equipment according to claim 1, characterized in that, The battery cell moving device includes a mobile robotic arm and multiple battery cell picking components installed at the movable end of the mobile robotic arm.

13. The battery string production equipment according to claim 12, characterized in that, Each of the battery cell pickers is mounted on the mobile robotic arm via an adjustment mechanism, which is used to adjust at least the angle of the battery cell.

14. The battery string production equipment according to claim 1, characterized in that, The battery string production equipment also includes a positioning camera, which is positioned above the receiving station and is used to detect the position of the battery cells on the receiving platform.

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