Battery string preparation equipment

Abstract

The utility model discloses a battery string preparation device. The device comprises a transmission mechanism; the film belt drawing mechanism is used for drawing out a plurality of parallel film belts and laying the drawn-out film belts on the conveying mechanism; the battery piece group transfer mechanism is used for transferring a plurality of battery pieces to the transmission mechanism; the welding strip section transferring mechanism is used for transferring the multiple welding strip sections to the conveying mechanism; wherein the film belt, the welding belt section and the battery piece which are borne on the transmission mechanism are distributed in a laminated mode, and the transmission mechanism is used for transmitting the film belt, the welding belt section and the battery piece which are distributed in the laminated mode. According to the embodiment of the utility model, the single film strip is adopted, and the film strips are not connected, so that the welding strip displacement caused by film shrinkage is avoided, the accuracy of the position of the welding strip is ensured, and the quality of the prepared battery string is further ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, and in particular to a battery string preparation device. Background Art

[0002] A battery string is made up of multiple battery cells interconnected by welding ribbons. The battery cell interconnection methods include infrared welding, laser welding, dispensing interconnection, SmartWire-Contact (SWCT), etc.

[0003] For solar cells without main grid, the secondary grid line is relatively thin, and the use of infrared welding to weld the welding strip is prone to cause welding defects such as desoldering and cracking.

[0004] Although the SWCT method can avoid welding defects such as desoldering and cracking, in the SWCT method, the diaphragm needs to be bonded to the soldering tape first, and then bonded to the battery cell. The process is complicated and the accuracy of the soldering tape position is low. Utility Model Content

[0005] The utility model provides a battery string preparation device, aiming to at least solve the technical problems in the prior art of complex procedures and low accuracy of welding strip positions in the battery string preparation process.

[0006] The present invention provides a battery string preparation device, comprising:

[0007] Transmission mechanism;

[0008] A film tape traction mechanism, used for traction of multiple parallel film tapes, and laying the traction of multiple film tapes on the transmission mechanism;

[0009] A battery cell group transport mechanism, used to transport multiple battery cells to the transmission mechanism;

[0010] A welding ribbon segment transfer mechanism, used for transferring a plurality of welding ribbon segments to the transmission mechanism;

[0011] The film tapes, welding tape segments and battery cells carried by the transmission mechanism are stacked and distributed, and the transmission mechanism is used to transmit the stacked and distributed film tapes, welding tape segments and battery cells.

[0012] In the embodiment of the utility model, when preparing a battery string, it is sufficient to pre-stack and distribute the film tape, the welding tape segment and the battery cells, without the need to pre-bond the film tape and the welding tape segment, thus saving working procedures and improving the preparation efficiency of the battery string; in addition, a single film tape is used without connection between the film tapes, thus avoiding the displacement of the welding tape due to the shrinkage of the film cells, ensuring the accuracy of the position of the welding tape, and further ensuring the quality of the prepared battery string; in addition, placing multiple film tapes, multiple welding tape segments and multiple battery cells on the transmission mechanism improves the positioning accuracy of multiple film tapes, multiple welding tape segments and multiple battery cells compared to placing the film tapes, welding tape segments and battery cells separately at different workstations.

[0013] Optionally, the transmission mechanism comprises a membrane tape adsorption structure, and the membrane tape adsorption structure is used to adsorb multiple membrane tapes.

[0014] By setting up a membrane tape adsorption structure, multiple membrane tapes can be adsorbed during the process of the transmission mechanism carrying and transmitting multiple membrane tapes, so as to avoid displacement of the membrane tapes during transmission, ensure the accurate position of the membrane tapes in the prepared battery string, and ensure the quality of the prepared battery string.

[0015] Optionally, the conveying mechanism also includes a film strip blowing structure, which is used to convey the stacked film strips, welding strips and battery cells to the heating position, and the film strip blowing structure is used to blow multiple film strips located at the heating position toward the battery cells.

[0016] In the embodiment of the utility model, the film strip blowing structure can blow multiple film strips located at the heating position toward the battery cell so that the film strips are attached to the surface of the battery cell, thereby avoiding the welding strips from being fixed in place due to the film strips not being attached to the battery cell.

[0017] Optionally, the transmission mechanism further includes a battery cell adsorption structure, and the battery cell adsorption structure is used to adsorb multiple battery cells.

[0018] When the transmission mechanism carries and transmits a plurality of battery cells, the battery cell adsorption structure can adsorb the plurality of battery cells to avoid displacement of the battery cells during the transmission process.

[0019] Optionally, the transmission mechanism includes a cooling component, which is located below the heating position and is used to cool the transmission mechanism.

[0020] The part of the transmission mechanism below the heating position will be heated, and this part of the transmission mechanism will be cooled by the cooling component so that the temperature of this part of the transmission mechanism is always maintained at a preset temperature to avoid melting of the part of the film tape that is directly in contact with the transmission mechanism, thereby avoiding the film tape from sticking to the transmission mechanism after melting.

[0021] Optionally, a film tape cutting mechanism is further included, wherein the film tape cutting mechanism is located at one end of the transmission mechanism away from the heating position, and the film tape cutting mechanism is used to cut a plurality of film tapes.

[0022] In the embodiment of the utility model, when the film tape is cut, only the portion located below the film tape cutting mechanism needs to be cut, and the structure is simple.

[0023] Optionally, it also includes multiple film strip cutting mechanisms for cutting multiple film strips, and the multiple film strip cutting mechanisms are arranged at intervals along the transmission direction of the transmission mechanism, and the length of the cut film strip is less than or equal to the size of the battery cell along the transmission direction of the transmission mechanism.

[0024] In the embodiment of the utility model, a cutting portion is added to cut a plurality of film tapes into a plurality of sections, and no film tape is arranged between two adjacent battery cells, thereby saving the amount of film tape.

[0025] Optionally, the conveying mechanism includes a conveying belt, and the membrane belt adsorption structure and the membrane belt blowing structure both include a plurality of rows of first air holes opened on the conveying belt.

[0026] Optionally, the battery cell adsorption structure includes a plurality of rows of second air holes on the conveyor belt, the first air holes and the second air holes are spaced apart and distributed along a first direction, and the first direction is perpendicular to a conveying direction of the conveying mechanism.

[0027] By disposing the first air holes and the second air holes in a spaced-apart manner along the first direction, it is possible to avoid the film-blowing effect of the first air holes and the adsorption effect of the second air holes from influencing each other.

[0028] Optionally, a battery cell group carrying platform is further included, wherein the battery cell group carrying platform is used to carry a plurality of battery cells, and the battery cell group carrying platform is located on one side of the transmission mechanism along the first direction.

[0029] The arrangement of the battery cell group carrying platform facilitates the transportation of multiple battery cells by the battery cell group transportation mechanism.

[0030] Optionally, a welding ribbon cutting platform is further included, wherein the welding ribbon cutting platform is used to carry and cut multiple welding ribbons to obtain multiple welding ribbon segments, and the welding ribbon cutting platform is located on one side of the transmission mechanism along the first direction.

[0031] Optionally, a welding ribbon traction mechanism is further included, wherein the welding ribbon traction mechanism is used to pull out a plurality of parallel welding ribbons and lay the pulled out plurality of welding ribbons on the welding ribbon cutting platform.

[0032] Optionally, a heating box is also included, and the heating box is used to heat the battery cells, welding strip segments and film strips located at the heating position.

[0033] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the three-dimensional structure of a battery string preparation device provided in an embodiment of the utility model;

[0035] Figure 2 A schematic diagram of the top view of the battery string preparation device provided in an embodiment of the utility model;

[0036] Figure 3 A schematic diagram of the three-dimensional structure of a welding ribbon roll, a welding ribbon cutting platform and a welding ribbon pulling mechanism provided in an embodiment of the utility model;

[0037] Figure 4 A schematic diagram of the top view of the welding ribbon roll, welding ribbon cutting platform and welding ribbon pulling mechanism provided in an embodiment of the utility model;

[0038] Figure 5 A schematic diagram of the three-dimensional structure of a transmission mechanism provided by an embodiment of the utility model;

[0039] Figure 6 A schematic diagram of the top view of the transmission mechanism provided by an embodiment of the utility model;

[0040] Figure 7 for Figure 6 Schematic diagram of the enlarged structure at point C in the middle.

[0041] Reference numerals:

[0042] 1-film strip traction mechanism, 2-transmission mechanism, 201-transmission belt, 202-first air vent, 203-second air vent, 204-mounting seat, 205-first water joint, 206-air inlet joint, 207-first air exhaust joint, 208-roller, 3-battery cell group transport mechanism, 4-welding strip segment transport mechanism, 5-film strip cutting mechanism, 6-battery cell group carrying platform, 7-welding strip cutting platform, 701-cutting seam, 8-welding strip traction mechanism, 9-heating box, 10-film strip roll, 11-welding strip roll, 12-welding strip segment, 13-heating position. DETAILED DESCRIPTION

[0043] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0044] Reference Figure 1 and Figure 2 The utility model embodiment discloses a battery string preparation device, including: a transmission mechanism 2; a film strip pulling mechanism 1, used to pull out multiple parallel film strips, and lay the pulled multiple film strips on the transmission mechanism 2; a battery cell group transfer mechanism 3, used to transfer multiple battery cells to the transmission mechanism 2; a welding strip segment transfer mechanism 4, used to transfer multiple welding strip segments 12 to the transmission mechanism 2; wherein the film strips, welding strip segments 12 and battery cells carried on the transmission mechanism 2 are stacked and distributed, and the transmission mechanism 2 is used to transfer the stacked and distributed film strips, welding strip segments 12 and battery cells.

[0045] Specifically, refer to Figure 1 The battery string preparation device can prepare one battery string at a time. The battery string preparation device can also prepare multiple battery strings at the same time. When preparing multiple battery strings, multiple groups of stacked film strips, welding strip segments 12 and battery cells are arranged at intervals along the first direction on the transmission mechanism 2.

[0046] The conveying mechanism 2 may be a belt conveying mechanism for conveying the placed film tape, welding tape segment 12 and battery cell. The battery string preparation device may further include a film tape roll 10, on which a plurality of film tapes are wound. The number of film tapes wound on the film tape roll 10 is greater than or equal to the number of film tapes required in a single battery string. The film tape roll 10 is located on one side of the conveying mechanism 2 along the second direction, and the second direction is parallel to the conveying direction of the conveying mechanism 2. The conveying direction of the conveying mechanism 2 can refer to Figure 2 The arrow in A shows the direction.

[0047] The number of film strips pulled out by the film strip pulling mechanism 1 is the same as the number of film strips required in a single battery string. The multiple film strips pulled out by the film strip pulling mechanism 1 are arranged at intervals along a first direction, which is perpendicular to the transmission direction of the transmission mechanism 2. The first direction can be referred to as Figure 2 and Figure 6 The film tape pulling mechanism 1 is used to clamp the head ends of the multiple film tapes on the film tape roll 10, pull out the multiple film tapes along the transmission direction of the transmission mechanism 2, and lay the pulled multiple film tapes on the transmission mechanism 2.

[0048] The film tape pulling mechanism 1 may include a first clamping member, a first lifting member connected to the first clamping member, and a first moving member connected to the first lifting member. The first clamping member is used to clamp a plurality of film tapes, the first lifting member is used to drive the first clamping member to rise and fall, and the first moving member is used to drive the first lifting member and the first clamping member to move along the second direction.

[0049] The number of battery cells transported by the battery cell group transport mechanism 3 may be the total number of battery cells included in a single battery string. A single welding ribbon segment 12 is used to connect two adjacent battery cells. The number of welding ribbon segments 12 transported by the welding ribbon segment transport mechanism 4 may be the total number of welding ribbon segments 12 required in a single battery string. The width of the film tape is greater than the width of the welding ribbon segment 12. The cross-section of the welding ribbon segment 12 may be rectangular, circular, elliptical, trapezoidal or waist-shaped, and the cross-section of the welding ribbon segment 12 refers to: the cross-section of the welding ribbon along the thickness direction of the welding ribbon. The waist shape here refers to a figure formed by two sides of equal length, opposite and parallel distribution, both ends of which are tangent to the semicircle, or in other words, the shape of the waist shape is similar to or the same as the shape of the waist-shaped hole.

[0050] The cell may be a back contact (BC) cell, and a grid line is arranged on the back of the back contact cell. The cell may also be a busbarless cell, and no busbar is arranged on the busbarless cell, and only thin grid lines are arranged. When the cell is a back contact cell and the front side of the cell is placed on the transmission mechanism 2 facing upward, the film strip is located at the bottom layer, the welding strip section 12 is located in the middle, and the cell is located at the top layer.

[0051] The conveying mechanism 2 is used to convey the stacked film tape, welding tape segment 12 and battery cell to the heating position 13, where the battery cell, welding tape segment 12 and film tape are heated. After heating, the film tape is adhered to the surface of the battery cell to fix the welding tape segment 12.

[0052] In the embodiment of the utility model, when preparing a battery string, it is sufficient to pre-stack and distribute the film tape, the welding tape segment 12 and the battery cells, and there is no need to pre-bond the film tape and the welding tape segment, which saves working procedures and improves the preparation efficiency of the battery string; in addition, a single film tape is used, and there is no connection between the film tapes, which avoids the displacement of the welding tape due to the shrinkage of the film, ensures the accuracy of the position of the welding tape, and further ensures the quality of the prepared battery string; in addition, multiple film tapes, multiple welding tape segments 12 and multiple battery cells are placed on the transmission mechanism 2, which improves the positioning accuracy of multiple film tapes, multiple welding tape segments 12 and multiple battery cells compared to placing the film tapes, welding tape segments 12 and battery cells separately at different workstations.

[0053] The transmission mechanism 2 includes a film tape adsorption structure, and the film tape adsorption structure is used to adsorb multiple film tapes.

[0054] Specifically, the transmission mechanism 2 includes a transmission belt 201, and the film tape adsorption structure may include a plurality of holes opened on the transmission belt 201. In the process of the transmission mechanism 2 carrying and transmitting the plurality of film tapes, the film tape adsorption structure adsorbs the plurality of film tapes to avoid displacement of the film tapes during the transmission process, thereby ensuring the accurate position of the film tapes in the prepared battery string and the quality of the prepared battery string.

[0055] The conveying mechanism 2 also includes a film strip blowing structure, which is used to convey the stacked film strips, welding strip segments 12 and battery cells to the heating position 13, and the film strip blowing structure is used to blow multiple film strips located at the heating position toward the battery cells.

[0056] Specifically, the film strip blowing structure may include a plurality of holes opened on the conveyor belt 201. The holes in the film strip adsorption structure and the holes in the film strip blowing structure may be different holes or the same holes. The heating position 13 is a section of the conveyor mechanism 2 away from the film strip roll 10, and the heating position 13 is located directly below the heating box 9. The conveyor mechanism 2 includes a conveyor belt 201, and the conveyor belt 201 is wound on two rollers 208. The heating position 13 is specifically a section of the conveyor belt 201 away from the film strip roll 10. After the conveyor mechanism 2 transfers the battery cell, the welding tape segment 12 and the film strip to the heating position 13, the battery cell, the welding tape segment 12 and the film strip in the heating position 13 will be heated. During the heating process, the film strip blowing structure blows multiple film strips toward the battery cell so that the film strip is attached to the surface of the battery cell to avoid the welding tape being not fixed in place due to the film tape not being attached to the battery cell.

[0057] The transmission mechanism 2 further includes a battery cell adsorption structure, and the battery cell adsorption structure is used to adsorb multiple battery cells.

[0058] Specifically, the cell adsorption structure can be a plurality of holes opened on the conveyor belt 201. In the process of the conveyor mechanism 2 carrying and conveying a plurality of cell sheets, the cell adsorption structure adsorbs the plurality of cell sheets to avoid displacement of the cell sheets during the conveying process. The cell adsorption structure is also used to adsorb a plurality of cell sheets located at the heating position 13, thereby providing a downward force to the cell sheets during the heating process, so that the cell sheets are in close contact with the welding strips. It should be noted that the holes in the cell adsorption structure and the holes in the membrane tape adsorption structure are different holes.

[0059] The transmission mechanism 2 includes a cooling component, which is located below the heating position 13 and is used to cool the transmission mechanism 2 .

[0060] Specifically, refer to Figure 5 The cooling component includes a first water joint 205, a cooling channel and a second water joint connected to each other. The first water joint 205 is used to introduce cooling water, and the second water joint is used to allow the cooling water to flow out after heat exchange. The cooling water flows in from the first water joint 205, flows through the cooling channel for heat exchange, and flows out from the second water joint after heat exchange.

[0061] The transmission mechanism 2 includes a mounting seat 204, and the first water connector 205, the cooling channel and the second water connector are all arranged on the mounting seat 204. When the battery cell, the welding strip section 12 and the film strip in the heating position 13 are heated, the transmission mechanism 2 will also be heated. At this time, the transmission mechanism 2 is cooled by the cooling member so that the temperature of the mounting seat 204 located below the heating position 13 is always maintained at a preset temperature to avoid the melting of the part of the film strip that directly contacts the transmission mechanism 2, thereby avoiding the film strip from being melted and adhering to the transmission mechanism 2. The preset temperature can be 25°C. The mounting seat 204 can also be configured with a heating function according to actual needs.

[0062] In one embodiment, referring to Figure 1 and Figure 2 The battery string preparation device provided by the embodiment of the utility model further includes a film strip cutting mechanism 5, which is located at one end of the transmission mechanism 2 away from the heating position 13, and is used to cut multiple film strips.

[0063] Specifically, the film tape cutting mechanism 5 can be raised and lowered. When the film tape is not cut, the film tape cutting mechanism 5 rises so that the film tape pulling mechanism 1 can smoothly pass under the film tape cutting mechanism 5. When the film tape is cut, only the part below the film tape cutting mechanism 5 needs to be cut, and the structure is simple. The length of the cut film tape is greater than or equal to the length of multiple battery cells.

[0064] The film tape pulling mechanism 1 pulls the film tape until it is pulled to a predetermined position, and then the film tape cutting mechanism 5 cuts a plurality of film tapes so that the length of the cut film tape is a preset length, and then the clamping member in the film tape pulling mechanism 1 releases the film tape, so that the cut film tape falls onto the conveying mechanism 2. After the conveying mechanism 2 conveys the cut film tape to the heating position, the film tape pulling mechanism 1 clamps the head ends of the plurality of film tapes on the film tape roll 10 again to pull the film tape again.

[0065] In another embodiment, the battery string preparation equipment provided by the embodiment of the utility model also includes a plurality of film strip cutting mechanisms 5 for cutting a plurality of film strips, and the plurality of film strip cutting mechanisms 5 are arranged at intervals along the transmission direction of the transmission mechanism 2, and the length of the cut film strip is less than or equal to the size of the battery cell along the transmission direction of the transmission mechanism 2.

[0066] Specifically, the cut film strip will not exceed the edge of a single cell, that is, it will not cover the gap between two adjacent cells. In the embodiment of the utility model, a cutting point is added, and multiple film strips are cut into multiple sections. No film strip is set between two adjacent cells, which saves the amount of film strip.

[0067] Reference Figure 6 and Figure 7The conveying mechanism 2 includes a conveying belt 201 , and the membrane belt adsorption structure and the membrane belt blowing structure both include a plurality of rows of first air holes 202 opened on the conveying belt 201 .

[0068] Specifically, the shape of the first air holes 202 can be rectangular, circular, triangular, etc. Preferably, two adjacent rows of first air holes 202 are used to absorb a film strip or blow open a film strip. Figure 5 The transmission mechanism 2 also includes a mounting seat 204, and the film strip adsorption structure also includes a first vacuum air passage opened on the mounting seat 204, multiple rows of first suction ports connected to the first vacuum air passage, and a first air extraction joint 207. The film strip blowing structure also includes a blowing passage opened on the mounting seat 204, multiple rows of blowing ports connected to the blowing passage, and an air inlet joint 206. Whether the first air hole 202 has an adsorption function or a film strip blowing function depends on whether the first air hole 202 is under the first suction port or the blowing port.

[0069] The first air extraction joint 207 is used to connect the first vacuuming device through the first air extraction pipe. When the first air hole 202 plays an adsorption role, the gas is extracted through the first air hole 202, the first suction port, the first vacuum air channel and the first air extraction joint 207. The air inlet joint 206 is used to connect the blowing device through the air inlet pipe. The blowing channel and the multiple rows of blowing ports are located below the heating position 13. When the first air hole 202 plays the role of blowing the film strip, the gas is blown toward the film strip through the air inlet joint 206, the blowing channel, the blowing port and the first air hole 202.

[0070] Reference Figure 6 and Figure 7 The cell adsorption structure includes a plurality of rows of second air holes 203 on the conveyor belt 201 , and the first air holes 202 and the second air holes 203 are spaced apart and distributed along a first direction, and the first direction is perpendicular to the conveying direction of the conveying mechanism 2 .

[0071] Specifically, the shape of the second air hole 203 can be rectangular, circular, triangular, etc. The battery cell adsorption structure also includes a second vacuum air duct opened on the mounting base 204, multiple rows of second suction ports connected to the second vacuum air duct, and a second air extraction joint. The second air extraction joint is used to connect to the second vacuum extraction device through a second air extraction pipe. When the second air hole 203 adsorbs the battery cell, the gas is extracted through the second air hole 203, the second suction hole, the second vacuum air duct and the second air extraction joint. In the embodiment of the utility model, the first air hole 202 and the second air hole 203 are arranged to be spaced apart along the first direction, so that the blowing effect of the first air hole 202 on the film belt and the adsorption effect of the second air hole 203 can be avoided from affecting each other.

[0072] The battery string preparation device provided by the embodiment of the utility model further includes a battery cell group carrying platform 6, which is used to carry a plurality of battery cells. The battery cell group carrying platform 6 is located on one side of the transmission mechanism 2 along the first direction.

[0073] Specifically, the battery cell group carrying platform 6 includes a plurality of carrying platforms, each of which is used to carry a plurality of battery cells. The plurality of battery cells carried on the battery cell group carrying platform 6 are arranged at intervals along the second direction. The battery cell group transport mechanism 3 is used to transport the plurality of battery cells carried on the battery cell group carrying platform 6 to the transmission mechanism 2.

[0074] The battery string preparation equipment also includes a battery cell arrangement mechanism, which may include a manipulator, and the battery cell arrangement mechanism is used to grab the battery cells and place the battery cells on the battery cell group carrying platform 6 as required. Multiple battery cells have been arranged on the battery cell group carrying platform 6, and the battery cell group transfer mechanism 3 only needs to transfer multiple battery cells. And because the battery cell group carrying platform 6 is located on one side of the transmission mechanism 2 along the first direction, the battery cell group transfer mechanism 3 can move back and forth along the first direction when transferring multiple battery cells, which is convenient for the battery cell group transfer mechanism 3 to transfer multiple battery cells.

[0075] The battery cell group transport mechanism 3 may include a first adsorption component, a third lifting component connected to the first adsorption component, and a third movable component connected to the third lifting component. The first adsorption component is used to adsorb multiple battery cells, the third lifting component is used to drive the first adsorption component to rise and fall, and the third movable component is used to drive the third lifting component and the first adsorption component to move along the first direction.

[0076] Reference Figures 2 to 4 The battery string preparation device provided in the embodiment of the utility model also includes a welding strip cutting platform 7, which is used to carry and cut multiple welding strips to obtain multiple welding strip segments 12, and the welding strip cutting platform 7 is located on one side of the transmission mechanism 2 along the first direction.

[0077] Preferably, the cell group carrying platform 6 and the ribbon cutting platform 7 are respectively located on both sides of the transmission mechanism 2 along the first direction. The ribbon segment transfer mechanism 4 is used to transfer the multiple ribbon segments cut on the ribbon cutting platform 7 to the transmission mechanism 2.

[0078] A plurality of cutting slits 701 are provided on the welding strip cutting platform 7, and the plurality of cutting slits 701 are arranged at intervals along the second direction. Preferably, each cutting slit 701 is provided with two rows of cutting knives spaced apart along the second direction, and the cutting knives are used to cut the welding strip. The distance between the two rows of cutting knives is preferably consistent with the spacing between two adjacent welding strip segments 12 along the second direction, so that after cutting multiple welding strips, multiple welding strip segments 12 with spacing meeting the requirements can be obtained. The welding strip cutting platform 7 can cut multiple welding strips required for a single battery string at one time, thereby improving the efficiency of battery string preparation.

[0079] The welding strip segment transfer mechanism 4 may include a second adsorption component, a fourth lifting component connected to the second adsorption component, and a fourth movable component connected to the fourth lifting component. The second adsorption component is used to adsorb multiple welding strip segments, the fourth lifting component is used to drive the second adsorption component to rise and fall, and the fourth movable component is used to drive the fourth lifting component and the second adsorption component to move along the first direction.

[0080] The battery string preparation device provided in the embodiment of the utility model further includes a welding ribbon pulling mechanism 8, which is used to pull out a plurality of parallel welding ribbons and lay the pulled out plurality of welding ribbons on the welding ribbon cutting platform 7.

[0081] Specifically, the battery string preparation device may further include a welding tape roll 11, on which a plurality of welding tapes are wound. The welding tape roll 11 is located on one side of the welding tape cutting platform 7 along the second direction. The welding tape pulling mechanism 8 is used to clamp the head ends of the plurality of welding tapes on the welding tape roll 11, pull out the plurality of welding tapes along the transmission direction of the transmission mechanism 2, and lay the pulled out plurality of welding tapes on the welding tape cutting platform 7.

[0082] The welding strip pulling mechanism 8 may include a second clamping member, a second lifting member connected to the second clamping member, and a second moving member connected to the second lifting member. The second clamping member is used to clamp a plurality of welding strips, the second lifting member is used to drive the second clamping member to rise and fall, and the second moving member is used to drive the second lifting member and the second clamping member to move along the second direction.

[0083] The battery string preparation device provided in the embodiment of the utility model further includes a heating box 9, which is used to heat the battery sheet, the welding strip section 12 and the film strip located at the heating position. The heating box 9 includes a plurality of heating lamps. The heating box 9 is located above the heating position.

[0084] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0085] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all fall within the protection of the utility model.

Claims

1. A battery string preparation device, characterized in that: include: Transmission mechanism; A film tape traction mechanism, used for traction of multiple parallel film tapes, and laying the traction of multiple film tapes on the transmission mechanism; A battery cell group transport mechanism, used to transport multiple battery cells to the transmission mechanism; A welding ribbon segment transfer mechanism, used for transferring a plurality of welding ribbon segments to the transmission mechanism; The film tapes, welding tape segments and battery cells carried by the transmission mechanism are stacked and distributed, and the transmission mechanism is used to transmit the stacked and distributed film tapes, welding tape segments and battery cells.

2. The battery string preparation device according to claim 1, characterized in that: The transmission mechanism comprises a film tape adsorption structure, and the film tape adsorption structure is used for adsorbing a plurality of film tapes.

3. The battery string preparation device according to claim 1 or 2, characterized in that: The conveying mechanism also includes a film strip blowing structure, which is used to convey the stacked film strips, welding strips and battery cells to the heating position, and the film strip blowing structure is used to blow multiple film strips located at the heating position toward the battery cells.

4. The battery string preparation device according to claim 3, characterized in that: The transmission mechanism further comprises a battery cell adsorption structure, and the battery cell adsorption structure is used for adsorbing a plurality of battery cells.

5. The battery string preparation device according to claim 3, characterized in that: The transmission mechanism comprises a cooling component, which is located below the heating position and is used to cool the transmission mechanism.

6. The battery string preparation device according to claim 3, characterized in that: It also includes a film strip cutting mechanism, which is located at one end of the transmission mechanism away from the heating position, and is used to cut multiple film strips.

7. The battery string preparation device according to claim 1, characterized in that: It also includes a plurality of film strip cutting mechanisms for cutting a plurality of film strips, wherein the plurality of film strip cutting mechanisms are arranged at intervals along the transmission direction of the transmission mechanism, and the length of the cut film strips is less than or equal to the size of the battery cell along the transmission direction of the transmission mechanism.

8. The battery string preparation device according to claim 4, characterized in that: The conveying mechanism comprises a conveying belt, and the film belt adsorption structure and the film belt blowing structure both comprise a plurality of rows of first air holes opened on the conveying belt.

9. The battery string preparation device according to claim 8, characterized in that: The battery cell adsorption structure includes a plurality of rows of second air holes on the conveyor belt, wherein the first air holes and the second air holes are spaced apart and distributed along a first direction, and the first direction is perpendicular to a conveying direction of the conveying mechanism.

10. The battery string preparation device according to claim 1, characterized in that: It comprises a battery cell group carrying platform, the battery cell group carrying platform is used to carry a plurality of battery cells, and the battery cell group carrying platform is located on one side of the transmission mechanism along the first direction.

11. The battery string preparation device according to claim 1, characterized in that: It also includes a welding ribbon cutting platform, which is used to carry and cut multiple welding ribbons to obtain multiple welding ribbon segments. The welding ribbon cutting platform is located on one side of the transmission mechanism along the first direction.

12. The battery string preparation device according to claim 11, characterized in that: It also includes a welding tape traction mechanism, which is used to traction multiple parallel welding tapes and lay the traction multiple welding tapes on the welding tape cutting platform.

13. The battery string preparation device according to claim 3, characterized in that: It also includes a heating box, which is used to heat the battery cells, welding strip segments and film strips located at the heating position.

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