Solder strip processing device and series connection machine

Abstract

The utility model provides a welding strip processing device and a series connection machine. The welding strip processing device comprises a base, a plurality of welding strip processing assemblies and a distance separation driving assembly. And all the odd-numbered welding strip processing assemblies clamp all the odd-numbered welding strips in the multiple welding strips in a matched mode and guide all the even-numbered welding strips in the multiple welding strips in a matched mode, and the odd-numbered welding strip processing assemblies are further used for cutting all the even-numbered welding strips to obtain a plurality of second welding strip sets. And all the even-numbered welding strip processing assemblies clamp all the even-numbered welding strips in a matched mode and guide all the odd-numbered welding strips in the multiple welding strips in a matched mode, and the even-numbered welding strip processing assemblies are further used for cutting all the odd-numbered welding strips to obtain a plurality of first welding strip sets. The spacing driving assembly drives the welding strip processing assemblies to be separated towards the two sides relative to the middle position of the base so as to adjust the first welding strip set and the second welding strip set. According to the utility model, the automatic preparation of the first solder strip group and the second solder strip group required by the string formation of the IBC battery string is realized, and the string formation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic component production, in particular to a welding strip processing device and a series connection machine. Background Art

[0002] There is no main grid line on the front of the interdigitated back contact (IBC) cell, and the positive electrode row and the negative electrode row are arranged on the back of the cell, thereby reducing the shading of the cell and improving the light conversion efficiency of the cell.

[0003] like Figure 1 As shown, the back contact type battery sheets are arranged in a string by: placing N (such as Figure 1 The back side of the 4) battery cells 200 are laid out in sequence with the back side facing upward, and the polarities of the electrode rows of adjacent battery cells on the same straight line are opposite. Figure 1 The five (5) welding ribbon groups connect N battery cells 200 in series, wherein: the first welding ribbon group ( Figure 1 The first, third and fifth welding ribbon groups in the second welding ribbon group ( Figure 1 The 2nd and 4th welding ribbon groups in the welding process are laid alternately.

[0004] In the traditional back-contact battery series connection process, in order to achieve the staggered laying of the first welding ribbon group and the second welding ribbon group, the welding ribbon traction mechanism needs to alternately pull and obtain the first welding ribbon group and the second welding ribbon group from the welding ribbon feeding station, and then lay the first welding ribbon group and the second welding ribbon group alternately on the battery cell.

[0005] The traditional back-contact battery string connection process has low efficiency in solder strip processing, which ultimately affects the production efficiency of the battery string. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a welding strip processing device, and its detailed technical solution is as follows:

[0007] A welding strip processing device is used to process a plurality of welding strips extending along a first horizontal direction to obtain a plurality of first welding strip groups and a plurality of second welding strip groups. The welding strip processing device comprises a base, a plurality of welding strip processing components and a spacing driving component, wherein:

[0008] A plurality of welding strip processing components are arranged on the base along a first horizontal direction, wherein:

[0009] All odd-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all even-numbered welding strips among the plurality of welding strips, and each odd-numbered welding strip processing component is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups; all even-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all odd-numbered welding strips among the plurality of welding strips, and each even-numbered welding strip processing component is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups; or,

[0010] All odd-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all odd-numbered welding strips among the plurality of welding strips, and each odd-numbered welding strip processing component is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups; all even-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all even-numbered welding strips among the plurality of welding strips, and each even-numbered welding strip processing component is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups;

[0011] The spacing drive component is arranged on the base. After all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut off, the spacing drive component is configured to drive a plurality of welding strip processing components to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first welding strip group and the second welding strip group along the first horizontal direction.

[0012] Through the cooperation of the welding strip processing component and the spacing driving component, the utility model staggers multiple welding strips into the first welding strip group and the second welding strip group, and adjusts the first welding strip group and the second welding strip group along the extension direction of the welding strip to meet the arrangement requirements between the first welding strip group and the second welding strip group in the battery string. In this way, the subsequent welding strip conveying mechanism can lay all the staggered and adjusted first welding strip groups and second welding strip groups on the arranged IBC battery cells at one time, thereby greatly improving the production efficiency of the IBC battery string.

[0013] In some embodiments, the solder strip processing device includes 2n solder strip processing components, and the 2n solder strip processing components are all slidably connected to the base, and the spacing drive component includes n spacing drive members, wherein: the i-th spacing drive member is used to drive the i-th solder strip processing component and the 2n+1-i-th solder strip processing component to move toward the middle of the base or to separate to both sides; or, the solder strip processing device includes 2n+1 solder strip processing components, the n+1-th solder strip processing component is fixedly connected to the base, and the remaining 2n solder strip processing components are all slidably connected to the base, and the spacing drive component includes n spacing drive members, wherein: the i-th spacing drive member is used to drive the i-th solder strip processing component and the 2n+2-i-th solder strip processing component to move toward the middle of the base or to separate to both sides; wherein, 1≤i≤n.

[0014] By configuring the spacing drive assembly to include n spacing drive components, the spacing drive assembly can independently drive each pair of welding strip processing assemblies to move in the opposite direction, and ultimately the 2n welding strip processing assemblies or the 2n+1 welding strip processing assemblies are quickly separated to both sides or moved toward the middle of the base to complete the spacing adjustment of the first welding strip group and the second welding strip group.

[0015] In some embodiments, the spacing drive member includes a driving wheel, a driven wheel, a synchronous belt and a driving member, wherein: the driving wheel and the driven wheel are rotatably installed on the base, the synchronous belt is mounted on the driving wheel and the driven wheel along the first horizontal direction, and the driving member is used to drive the driving wheel to rotate to drive the synchronous belt to rotate; the i-th welding strip processing component is fixedly connected to the first side belt body of the synchronous belt, and the 2n+1-i-th welding strip processing component or the 2n+2-i-th welding strip processing component is fixedly connected to the second side belt body of the synchronous belt; when the driving member drives the synchronous belt to rotate, it drives the i-th welding strip processing component and the 2n+1-i-th welding strip processing component or the 2n+2-i-th welding strip processing component to separate to both sides or move closer to the middle of the base.

[0016] A separation drive component with a simple structure and stable driving is provided, which only needs to be provided with one drive component to drive two corresponding welding strip processing components to move in opposite directions at the same speed, so as to separate to both sides or move closer to the middle of the base.

[0017] In some embodiments, among the n spacing driving components, the (i+1)th spacing driving component drives the corresponding two welding ribbon processing components to separate to both sides before the (i)th spacing driving component.

[0018] Among all the solder strip processing components, the pair of solder strip processing components that are farther from the middle of the base are separated to both sides first. In this way, on the one hand, it can prevent the two adjacent pairs of solder strip processing components from being damaged by collision, and on the other hand, it can prevent the ends of the solder strip group that has just been cut and has not yet been separated from each other from being deformed by collision.

[0019] In some embodiments, a guide rail extending along the first horizontal direction is further provided on the base, and a plurality of welding strip processing components are slidably connected to the guide rail via a slider.

[0020] By arranging a guide rail extending along the first horizontal direction on the base, sliding guidance of the solder strip processing assembly is achieved, thereby preventing the solder strip processing assembly from going off track and causing the solder strip to shift in position.

[0021] In some embodiments, the solder strip processing assembly includes: a mounting bracket mounted on a base; two clamping portions arranged in pairs on the mounting bracket, the two clamping portions being used to clamp all odd-numbered solder strips and one of all even-numbered solder strips from two different positions, and to guide the other of all odd-numbered solder strips and all second even-numbered solder strips from two different positions; a cutting portion arranged on the mounting bracket and located between the two clamping portions, the cutting portion being used to cut off all solder strips guided by the clamping portions.

[0022] The weld ribbon processing assembly is arranged so that the weld ribbon processing assembly can clamp all odd-numbered weld ribbons and one of all even-numbered weld ribbons from two different positions, guide all odd-numbered weld ribbons and the other of all second even-numbered weld ribbons from two different positions, and cut off all guided weld ribbons.

[0023] In some embodiments, the clamping portion includes a pressure plate, a pressure plate and a pressure plate driving unit, wherein: the pressure plate can be levitation mounted on the mounting bracket, and is in transmission connection with the pressure plate driving unit disposed on the mounting bracket, a plurality of pressure heads are disposed at the top end of the pressure plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; the pressure plate is fixedly mounted on the mounting bracket and extends along the second horizontal direction, a horizontal pressure surface is formed at the top end of the pressure plate, and ejectors corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads are disposed on the pressure surface, and the ejectors extend upward from the pressure surface; the pressure plate The driving unit is used to drive the pressure plate to slide up and down relative to the pressure plate. When the pressure plate slides downward to a low position, all odd-numbered pressure heads among the multiple pressure heads clamp all odd-numbered welding strips among the multiple welding strips onto the ejector pins one by one, and all even-numbered pressure heads among the multiple pressure heads guide all even-numbered welding strips among the multiple welding strips one by one, or, all even-numbered pressure heads among the multiple pressure heads clamp all even-numbered welding strips among the multiple welding strips onto the ejector pins one by one, and all odd-numbered pressure heads among the multiple pressure heads guide all odd-numbered welding strips among the multiple welding strips one by one.

[0024] The clamping part is arranged so that when the clamping part clamps one of all odd-order welding strips and all even-order welding strips among the multiple welding strips, the other one of all odd-order welding strips and all even-order welding strips among the multiple welding strips can be guided.

[0025] In some embodiments, the clamping portion also includes a guide comb arranged on the inner side of the pressure plate, and a plurality of guide grooves corresponding to the pressure heads are arranged on the guide comb at intervals along the second horizontal direction, and each guide groove is used to guide one of the multiple welding strips.

[0026] By setting the guide comb, the welding strip is guided to ensure that each welding strip passes under the corresponding pressure head.

[0027] In some embodiments, the cutting portion includes a fixed cutter, a movable cutter and a cutter driving unit, wherein: the fixed cutter is fixedly arranged on a mounting bracket and extends along a second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter; the movable cutter is liftably mounted on the mounting bracket and is transmission-connected to a cutter driving unit arranged on the mounting bracket, and a plurality of hook knives are arranged side by side along the second horizontal direction on the movable cutter, the hook knives extend upward from the upper edge of the movable cutter, and a movable blade is formed at the lower edge of the hook knives; the cutter driving unit is used to drive the movable cutter to slide up and down, and when the movable cutter slides upward to a high position, a gap is formed between the movable blade of each hook knife and the fixed blade of the fixed cutter for an odd-numbered welding strip or an even-numbered welding strip to pass through, and when the movable cutter slides downward to a low position, each hook knife cooperates with the fixed cutter to cut off an odd-numbered welding strip or an even-numbered welding strip passing therebetween.

[0028] By setting the cutting part, when the cutting part cuts off one of all odd-numbered welding strips and all even-numbered welding strips among the plurality of welding strips, the other one can be avoided at the same time.

[0029] The present application also provides a stringing machine, which is used to string IBC battery cells into strings. The stringing machine includes a stringing conveying mechanism, a battery cell laying mechanism, a solder strip pulling mechanism, a solder strip processing device as described above, a solder strip transport mechanism and a stringing mechanism, wherein: the stringing conveying mechanism is used to carry at least the battery cells and the solder strip group; the solder strip pulling mechanism is used to pull a plurality of solder strips extending along a first horizontal direction to the solder strip processing device; the solder strip processing device is used to alternately cut off all odd-numbered solder strips and all even-numbered solder strips to obtain a plurality of first solder strip groups and A plurality of second welding ribbon groups, the welding ribbon processing device is also used to adjust the spacing between each first welding ribbon group and the spacing between each second welding ribbon group to a second predetermined spacing; the welding ribbon conveying mechanism is used to place the plurality of first welding ribbon groups and the plurality of second welding ribbon groups on the welding ribbon processing device onto the serial conveying mechanism; the battery cell laying mechanism is used to convey a plurality of IBC battery cells with a first predetermined spacing to the upper surface of the plurality of first welding ribbon groups and the plurality of second welding ribbon groups located on the serial conveying mechanism; the serial connection mechanism is used to connect the stacked welding ribbon groups and IBC battery cells in series.

[0030] It can be seen that, through the cooperation of the serial connection conveying mechanism, the cell laying mechanism, the welding ribbon pulling mechanism, the welding ribbon processing device, the welding ribbon transport mechanism and the serial connection mechanism, the serial connection machine of the embodiment of the present application realizes the automatic welding of the IBC cell into a string. In particular, by providing the welding ribbon processing device, the serial connection machine of the embodiment of the present application realizes the automatic and efficient preparation of the welding ribbon group required for serial connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure after four back-contact type battery sheets are welded into a string by a welding ribbon assembly;

[0032] Figure 2 A schematic diagram of the three-dimensional structure of the welding strip processing device according to an embodiment of the present application at a viewing angle;

[0033] Figure 3 A schematic diagram of the three-dimensional structure of the welding strip processing device according to an embodiment of the present application at another viewing angle;

[0034] Figure 4 A schematic diagram of the structure of the solder strip processing device of an embodiment of the present application after omitting several solder strip processing components at one viewing angle;

[0035] Figure 5 This is a schematic structural diagram of a spacing driving member according to an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the three-dimensional structure of a welding strip processing assembly according to an embodiment of the present application at one viewing angle;

[0037] Figure 7 This is a schematic diagram of the three-dimensional structure of the welding strip processing assembly of an embodiment of the present application from another viewing angle;

[0038] Figure 8 A schematic diagram of the top view of the solder strip processing assembly according to an embodiment of the present application;

[0039] Fig. 9 This is a schematic diagram of the top view of the structure of the welding strip processing assembly of the embodiment of the present application after omitting one side of the pressing plate;

[0040] Fig.10 A schematic diagram of the structure of the cutting part implemented in this application;

[0041] Figures 1 to 10 Included:

[0042] Base 1:

[0043] Guide rail 11;

[0044] Welding strip processing assembly 2:

[0045] Mounting bracket 21;

[0046] Clamping part 22: pressure plate 221, pressure plate 222, pressure plate driving unit 223, pressure head 224, top

[0047] Needle 225, guide comb 226, guide groove 227;

[0048] Cutting section 23: fixed cutter 231, movable cutter 232, cutter driving unit 233, hook cutter 234;

[0049] Distance drive 3:

[0050] A driving wheel 31 , a driven wheel 32 , a synchronous belt 33 , and a driving member 34 . DETAILED DESCRIPTION

[0051] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0052] In the traditional back-contact battery series connection process, in order to achieve the staggered laying of the first welding ribbon group and the second welding ribbon group, the welding ribbon pulling mechanism needs to alternately pull and obtain the first welding ribbon group and the second welding ribbon group from the welding ribbon feeding station, and then lay the first welding ribbon group and the second welding ribbon group alternately on the battery cell. The traditional back-contact battery series connection process has low efficiency in welding ribbon processing, which ultimately affects the production efficiency of the battery string.

[0053] In view of this, the present application provides a welding tape processing device, which can pull out the welding tape pulling mechanism to cut multiple welding tapes into the first welding tape group and the second welding tape group in a staggered manner along the first horizontal direction, and adjust the spacing between the first welding tape group and the second welding tape group. In this way, the welding tape laying mechanism of the subsequent process can lay all the first welding tape group and the second welding tape group to the predetermined position at one time, such as the serial conveying mechanism, and then lay the pre-arranged IBC battery sheets, thereby greatly improving the production efficiency of the IBC battery string.

[0054] like Figures 2 to 4 As shown, the solder strip processing device in the embodiment of the present application includes a base 1, a plurality of (for example, 13 in the figure) solder strip processing components 2 and a spacing driving component.

[0055] A plurality of welding strip processing components 2 are arranged on the base 1 along a first horizontal direction (such as the X-axis direction in the figure), and one optional arrangement method is:

[0056] All odd-numbered (such as the 1st, 3rd, 5th, 7th, 9th, 11th and 13th in the figure) welding strip processing components 2 among the plurality of welding strip processing components 2 are configured to cooperate in clamping all odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate in guiding all even-numbered welding strips among the plurality of welding strips. That is, all odd-numbered welding strips among the plurality of welding strips are clamped and fixed by the odd-numbered welding strip processing components 2, and cannot move in the first horizontal direction relative to the odd-numbered welding strip processing components 2. All even-numbered welding strips among the plurality of welding strips are not clamped and fixed by the odd-numbered welding strip processing components 2, and can move in the first horizontal direction relative to the odd-numbered welding strip processing components 2, and the odd-numbered welding strip processing components 2 only implement movement guidance for them.

[0057] In addition, each odd-numbered welding strip processing assembly 2 is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups. That is, all even-numbered welding strips among the plurality of welding strips are cut into a plurality of second welding strip groups by all odd-numbered welding strip processing assemblies 2 among the plurality of welding strip processing assemblies 2.

[0058] Correspondingly, all the even-numbered (such as the 2nd, 4th, 6th, 8th, 10th, and 12th in the figure) welding strip processing components 2 among the plurality of welding strip processing components are configured to cooperate with clamping all the even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all the odd-numbered welding strips among the plurality of welding strips. That is, all the even-numbered welding strips among the plurality of welding strips are clamped and fixed by the even-numbered welding strip processing components 2, and they cannot move in the first horizontal direction relative to the even-numbered welding strip processing components 2. All the odd-numbered welding strips among the plurality of welding strips are not clamped and fixed by the even-numbered welding strip processing components 2, and they can move in the first horizontal direction relative to the even-numbered welding strip processing components 2, and the even-numbered welding strip processing components 2 only implement movement guidance for them.

[0059] In addition, each even-numbered welding strip processing assembly 2 is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups. That is, all odd-numbered welding strips among the plurality of welding strips are cut into a plurality of first welding strip groups by all even-numbered welding strip processing assemblies 2 among the plurality of welding strip processing assemblies 2.

[0060] After all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut, each first welding strip group is clamped and fixed on an odd-numbered welding strip processing component 2, and the end of each first welding strip group is located on an adjacent even-numbered welding strip processing component 2. Each second welding strip group is clamped and fixed on an even-numbered welding strip processing component 2, and the end of each second welding strip group is located on an adjacent odd-numbered welding strip processing component 2.

[0061] The spacing drive component is arranged on the base 1. When all the even-numbered welding ribbons and all the odd-numbered welding ribbons among the multiple welding ribbons are cut off, the spacing drive component is configured to drive the plurality of welding ribbon processing components 2 to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first welding ribbon group and the second welding ribbon group along the first horizontal direction, so that the spacing between the first welding ribbon groups and the spacing between the second welding ribbon groups meet the IBC battery stringing requirements.

[0062] Since the ends of each first welding ribbon group are guided by the adjacent even-numbered welding ribbon processing components 2 during the movement, and the ends of each second welding ribbon group are guided by the adjacent odd-numbered welding ribbon processing components 2 during the movement, the ends of each first welding ribbon group and second welding ribbon group are maintained in the first horizontal direction without sagging or tilting.

[0063] Another optional setting is:

[0064] All odd-numbered (such as the 1st, 3rd, 5th, 7th, 9th, 11th and 13th in the figure) welding strip processing components 2 among the plurality of welding strip processing components 2 are configured to cooperate with clamping all even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all odd-numbered welding strips among the plurality of welding strips. That is, all even-numbered welding strips among the plurality of welding strips are clamped and fixed by the odd-numbered welding strip processing components 2, and cannot move in the first horizontal direction relative to the odd-numbered welding strip processing components 2. All odd-numbered welding strips among the plurality of welding strips are not clamped and fixed by the odd-numbered welding strip processing components 2, and can move in the first horizontal direction relative to the odd-numbered welding strip processing components 2, and the odd-numbered welding strip processing components 2 only implement movement guidance for them.

[0065] In addition, each odd-numbered welding strip processing component 2 is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups. That is, all odd-numbered welding strips among the plurality of welding strips are cut into a plurality of first welding strip groups by all odd-numbered welding strip processing components 2 in the welding strip processing components 2.

[0066] Correspondingly, all the even-numbered (such as the 2nd, 4th, 6th, 8th, 10th, and 12th in the figure) welding strip processing components 2 among the plurality of welding strip processing components 2 are configured to cooperate with clamping all the odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all the even-numbered welding strips among the plurality of welding strips. That is, all the odd-numbered welding strips among the plurality of welding strips are clamped and fixed by the even-numbered welding strip processing components 2, and they cannot move in the first horizontal direction relative to the even-numbered welding strip processing components 2. All the even-numbered welding strips among the plurality of welding strips are not clamped and fixed by the even-numbered welding strip processing components 2, and they can move in the first horizontal direction relative to the even-numbered welding strip processing components 2, and the even-numbered welding strip processing components 2 only implement movement guidance for them.

[0067] In addition, each even-numbered welding strip processing assembly 2 is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups. That is, all even-numbered welding strips among the plurality of welding strips are cut into a plurality of second welding strip groups by all even-numbered welding strip processing assemblies 2 in the welding strip processing assemblies 2.

[0068] After all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut, each first welding strip group is clamped and fixed on an even-numbered welding strip processing component 2, and the end of each first welding strip group is located on an adjacent odd-numbered welding strip processing component 2. Each second welding strip group is clamped and fixed on an odd-numbered welding strip processing component 2, and the end of each second welding strip group is located on an adjacent even-numbered welding strip processing component 2.

[0069] The spacing drive component is arranged on the base 1. When all the even-numbered welding strips and all the odd-numbered welding strips among the multiple welding strips are cut off, the spacing drive component is configured to drive the plurality of welding strip processing components 2 to separate to both sides relative to the middle position of the base 1 in the first horizontal direction, so as to adjust the first welding strip group and the second welding strip group along the first horizontal direction, so that the spacing between the first welding strip groups and the spacing between the second welding strip groups meet the IBC battery stringing requirements.

[0070] Since the ends of each first welding ribbon group are guided by the adjacent odd-numbered welding ribbon processing components 2 during the movement, and the ends of each second welding ribbon group are guided by the adjacent even-numbered welding ribbon processing components 2 during the movement, the ends of each first welding ribbon group and second welding ribbon group are maintained in the first horizontal direction without sagging or tilting.

[0071] Optionally, the solder strip processing device in the embodiment of the present application includes 2n+1 solder strip processing components 2, that is, the number of solder strip processing components 2 is an odd number. In this case, the n+1th solder strip processing component 2 (that is, the solder strip processing component 2 located in the middle) can be fixedly connected to the base 1, and the remaining 2n solder strip processing components 2 are all slidably connected to the base 1, and the spacing drive component includes n spacing drive members 3. Among them: the i-th spacing drive member is used to drive the i-th solder strip processing component and the 2n+2-i-th solder strip processing component to move closer to the middle of the base or separate to both sides, wherein 1≤i≤n.

[0072] by Figures 2 to 4 Taking the solder strip processing device in the embodiment as an example, it includes 13 solder strip processing components 2, that is, n=6, wherein the 7th solder strip processing component 2 located in the middle position is fixedly connected to the base 1, and the remaining 12 solder strip processing components 2 are slidably connected to the base 1.

[0073] The split drive assembly includes six split drive members 3, wherein:

[0074] The first spacing driving member is used to drive the first solder strip processing component 2 and the thirteenth solder strip processing component 2 to move toward the middle of the base 1 (that is, the position of the seventh solder strip processing component 2) or to move apart to both sides.

[0075] The second separation driving member is used to drive the second solder strip processing component 2 and the twelfth solder strip processing component 2 to move toward the middle of the base 1 or to separate toward both sides.

[0076] The third separation driving member is used to drive the third solder strip processing component 2 and the eleventh solder strip processing component 2 to move toward the middle of the base 1 or to separate toward both sides.

[0077] The fourth spacing driving member is used to drive the fourth solder strip processing component 2 and the tenth solder strip processing component 2 to move toward the middle of the base 1 or to separate toward both sides.

[0078] The fifth spacing driving member is used to drive the fifth solder strip processing component 2 and the ninth solder strip processing component 2 to move toward the middle of the base 1 or to separate toward both sides.

[0079] The sixth spacing driving member is used to drive the sixth solder strip processing component 2 and the eighth solder strip processing component 2 to move toward the middle of the base 1 or to separate toward both sides.

[0080] Of course, the solder strip processing device in the embodiment of the present application may also include 2n solder strip processing components 2, that is, the number of solder strip processing components 2 is an even number. In this case, the 2n solder strip processing components 2 are all slidably connected to the base 1. The spacing drive component includes n spacing drive members 3, wherein: the i-th spacing drive member 3 is used to drive the i-th solder strip processing component 2 and the 2n+1-i-th solder strip processing component to move toward the middle of the base or to separate to both sides.

[0081] For example, the solder strip processing device includes 12 solder strip processing components 2 , that is, n=6, and the 12 solder strip processing components 2 are all slidably connected to the base 1 .

[0082] The split drive assembly includes six split drive members 3, wherein:

[0083] The first separation driving member is used to drive the first solder strip processing component 2 and the twelfth solder strip processing component 2 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0084] The second separation driving member is used to drive the second solder strip processing component 2 and the eleventh solder strip processing component 2 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0085] The third spacing driving member is used to drive the third solder strip processing component 2 and the tenth solder strip processing component 2 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0086] The fourth spacing driving member is used to drive the fourth solder strip processing component 2 and the ninth solder strip processing component 2 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0087] The fifth spacing driving member is used to drive the fifth solder strip processing component 2 and the eighth solder strip processing component 2 to move toward the middle of the bottom plate 1 or to move away from each other.

[0088] The sixth spacing driving member is used to drive the sixth solder strip processing component 2 and the seventh solder strip processing component 2 to move toward the middle of the bottom plate 1 or to separate toward both sides.

[0089] Optionally, the spacing drive member 3 includes a driving wheel 31, a driven wheel 32, a synchronous belt 33 and a driving member 34, wherein: the driving wheel 31 and the driven wheel 32 are rotatably mounted on the base 1, the synchronous belt 33 is sleeved on the driving wheel 31 and the driven wheel 32 along the first horizontal direction, and the driving member 34 is used to drive the driving wheel 31 to rotate, so as to drive the synchronous belt 33 to rotate. The i-th welding strip processing component 2 is fixedly connected to the first side belt body of the synchronous belt 33, and the 2n+1-i-th welding strip processing component 2 or the 2n+2-i-th welding strip processing component 2 is fixedly connected to the second side belt body of the synchronous belt 33. When the driving member 34 drives the synchronous belt 33 to rotate, it drives the i-th welding strip processing component 2 and the 2n+1-i-th welding strip processing component 2 or the 2n+2-i-th welding strip processing component 2 to move closer to the middle of the base or separate to both sides.

[0090] The synchronous belt drive method can ensure that the two corresponding welding strip processing components 2 move in opposite directions at the same speed to move toward the middle of the base 1 or separate to both sides. Compared with other transmission methods, it has a simple structure, low cost and easy maintenance.

[0091] Optionally, among the n spacing driving components 3 , the i-th spacing driving component 3 drives the corresponding welding strip processing component 2 to separate to both sides before the i+1-th spacing driving component 3 .

[0092] Still Figures 2 to 4 Taking the solder strip processing device in the embodiment as an example, the fifth spacing drive 3 first drives the first solder strip processing assembly 2 and the thirteenth solder strip processing assembly 2 to separate to both sides, and the second spacing drive 3 drives the second solder strip processing assembly 2 and the twelfth solder strip processing assembly 2 to separate to both sides, and then the third spacing drive 3, the fourth spacing drive 3, the fifth spacing drive 3 and the sixth spacing drive 3 drive the corresponding two solder strip processing assemblies 2 to separate to both sides in sequence or simultaneously at a certain time interval, and finally complete the adjustment of the spacing between the first solder strip group and the second solder strip group. It can be seen that the pair of solder strip processing assemblies 2 farthest from the center of the base are driven first and move away from each other, and finally the pair of solder strip processing assemblies 2 closest to the center of the base are driven and move away from each other.

[0093] By setting the driving sequence of the n spacing driving members 3 in this way, it can be achieved that when each welding strip processing assembly 2 is separated to both sides to form a spacing, it will not be blocked by the adjacent welding strip processing assembly 2 outside it, thereby preventing the ends of the first welding strip group and the second welding strip group from colliding and deforming.

[0094] like Figure 5As shown, optionally, at least one guide rail 11 extending along the first horizontal direction is further provided on the base 1, and a plurality of solder strip processing components 3 are slidably connected to the guide rail 11 via a slider. The guide rail 11 implements sliding guidance for all solder strip processing components 2 to prevent the solder strip processing components 2 from deviating and causing the solder strip to be offset.

[0095] like Figures 6 to 9 As shown, optionally, the welding strip processing assembly 2 includes: a mounting bracket 21 mounted on the base 1, two clamping parts 22 arranged in pairs on the mounting bracket 21, and a cutting part 23 located between the two clamping parts 22, wherein: the two clamping parts 22 are used to clamp one of all odd welding strips and all even welding strips from two different positions, and guide the other of all odd welding strips and all second even welding strips from two different positions. The cutting part 23 is used to cut off the odd welding strips or all second even welding strips guided by the clamping part 23.

[0096] Optionally, the clamping portion 22 includes a pressure plate 221, a pressure plate 222 and a pressure plate driving unit 223, wherein: the pressure plate 222 can be lifted and lowered on the mounting bracket 21, and is transmission-connected to the pressure plate driving unit 223 disposed on the mounting bracket 21, and a plurality of pressure heads 224 are disposed at the top end of the pressure plate 222 along a second horizontal direction (the Y-axis direction in the figure), and the second horizontal direction is perpendicular to the first horizontal direction.

[0097] The pressure plate 221 is fixedly mounted on the mounting bracket 21 and extends along the second horizontal direction. A horizontal pressure surface is formed at the top of the pressure plate 221. The pressure surface is provided with ejector pins 225 corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads 224. The ejector pins 225 extend upward from the pressure surface. The pressure plate driving unit 223 is used to drive the pressure plate 222 to slide up and down relative to the pressure plate 221.

[0098] When the pressure plate 222 slides downward to the low position:

[0099] All odd-numbered pressure heads 224 among the multiple pressure heads 224 clamp all odd-numbered welding strips among the multiple welding strips onto the ejector pins 225 one by one to implement pressing and fixing of all odd-numbered welding strips among the welding strips. There is a gap between all even-numbered pressure heads 224 among the multiple pressure heads 224 and the pressure plate 221. Therefore, all even-numbered pressure heads 224 among the multiple pressure heads 224 cannot press all even-numbered welding strips among the multiple welding strips, and can only guide all even-numbered welding strips among the multiple welding strips one by one.

[0100] Alternatively, all the even-numbered pressing heads 224 in the plurality of pressing heads 224 clamp all the even-numbered welding strips in the plurality of welding strips onto the ejector pins 225 one by one, so as to press and fix all the even-numbered welding strips in the welding strips. There is a gap between all the odd-numbered pressing heads 224 in the plurality of pressing heads 224 and the pressure plate 221, so all the odd-numbered pressing heads 224 in the plurality of pressing heads 224 cannot press all the odd-numbered welding strips in the plurality of welding strips, and can only guide all the odd-numbered welding strips in the plurality of welding strips one by one.

[0101] like Figure 7 As shown, optionally, the clamping portion 22 also includes a guide comb 226 arranged on the inner side of the pressure plate 221, and a plurality of guide grooves 227 corresponding to the pressure heads 224 are arranged at intervals along the second horizontal direction on the guide comb 226, and each guide groove 227 is used to guide one of the multiple welding strips to ensure that each welding strip passes under the corresponding pressure head 224 and is finally pressed onto the pressure plate 221 by the pressure head 224, or is guided by the pressure head 224.

[0102] like Fig.10 As shown, optionally, the cutting part 23 includes a fixed cutter 231, a movable cutter 232 and a cutter driving unit 233, wherein: the fixed cutter 231 is fixedly arranged on the mounting bracket 21 and extends along the second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter 231. The movable cutter 232 is movably mounted on the mounting bracket 21, and is in driving connection with the cutter driving unit 233 arranged on the mounting bracket 21, and a plurality of hook knives 234 are arranged side by side along the second horizontal direction on the movable cutter 232, and the hook knives 234 extend upward from the upper edge of the movable cutter 232, and a movable blade is formed at the lower edge of the hook knives 234.

[0103] The cutter driving unit 233 is used to drive the movable cutter 232 to slide up and down. When the movable cutter 232 slides up to a high position, a gap is formed between the movable blade of each hook knife 234 and the fixed blade of the fixed cutter 231 for an odd-numbered welding strip to pass through, and each even-numbered welding strip passes between adjacent hook knives 234. When the movable cutter 232 slides down to a low position, each hook knife 234 cooperates with the fixed cutter 231 to cut off the odd-numbered welding strips passing between the two. That is, when the cutting part 23 cuts off all the odd-numbered welding strips among the multiple welding strips, it avoids all the even-numbered welding strips among the multiple welding strips.

[0104] Alternatively, when the movable cutter 232 slides upward to a high position, a gap is formed between the movable blade of each hook knife 234 and the fixed blade of the fixed cutter 231 for an even-numbered welding strip to pass through, and each odd-numbered welding strip passes between adjacent hook knives 234. When the movable cutter 232 slides downward to a low position, each hook knife 234 cooperates with the fixed cutter 231 to cut off the even-numbered welding strips passing between the two. That is, when the cutting part 23 cuts off all the even-numbered welding strips among the multiple welding strips, it avoids all the odd-numbered welding strips among the multiple welding strips.

[0105] The embodiment of the present application further provides a stringing machine, which is used to string IBC battery cells into strings. The stringing machine includes a stringing conveying mechanism, a battery cell laying mechanism, a solder strip traction mechanism, a solder strip processing device, a solder strip conveying mechanism and a stringing mechanism, wherein:

[0106] The serial conveying mechanism can at least be used to carry the battery sheet and the welding ribbon group;

[0107] The welding ribbon pulling mechanism is used to pull a plurality of welding ribbons extending along a first horizontal direction to the welding ribbon processing device;

[0108] The welding strip processing device is used to alternately cut off all odd-numbered welding strips and all even-numbered welding strips to obtain a plurality of first welding strip groups and a plurality of second welding strip groups, and the welding strip processing device is also used to adjust the spacing between the first welding strip groups and the spacing between the second welding strip groups to a second predetermined spacing;

[0109] The welding tape conveying mechanism is used to place a plurality of first welding tape groups and a plurality of second welding tape groups on the welding tape processing device onto the serial conveying mechanism;

[0110] The cell placement mechanism is used to transport a plurality of IBC cells with a first predetermined spacing to above a plurality of first welding ribbon groups and a plurality of second welding ribbon groups located on the serial conveying mechanism;

[0111] The series connection mechanism is used to connect the stacked solder ribbon groups and IBC battery cells in series.

[0112] It can be seen that, through the cooperation of the serial connection conveying mechanism, the cell laying mechanism, the welding ribbon pulling mechanism, the welding ribbon processing device, the welding ribbon transport mechanism and the serial connection mechanism, the serial connection machine of the embodiment of the present application realizes the automatic and efficient welding of IBC cell sheets into strings. In particular, by providing the welding ribbon processing device, the serial connection machine of the embodiment of the present application realizes the automatic preparation of the welding ribbon group required for serial connection.

[0113] The above description of the utility model is sufficiently detailed and has certain particularities. Those skilled in the art should understand that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the utility model should fall within the scope of protection of the utility model. The scope of protection claimed by the utility model is defined by the claims, not by the above description in the embodiments.

Claims

1. A welding strip processing device, characterized in that: The welding strip processing device is used to process a plurality of welding strips extending along a first horizontal direction to obtain a plurality of first welding strip groups and a plurality of second welding strip groups, and the welding strip processing device comprises a base, a plurality of welding strip processing components and a spacing driving component, wherein: A plurality of the welding strip processing components are arranged on the base along a first horizontal direction, wherein: All odd-numbered solder strip processing components among the plurality of solder strip processing components are configured to cooperate in clamping all odd-numbered solder strips among the plurality of solder strips, and are configured to cooperate in guiding all even-numbered solder strips among the plurality of solder strips, and each odd-numbered solder strip processing component is further configured to cut off all even-numbered solder strips at corresponding positions to obtain a plurality of the second solder strip groups; all even-numbered solder strip processing components among the plurality of solder strip processing components are configured to cooperate in clamping all even-numbered solder strips among the plurality of solder strips, and are configured to cooperate in guiding all odd-numbered solder strips among the plurality of solder strips, and each even-numbered solder strip processing component is further configured to cut off all odd-numbered solder strips at corresponding positions to obtain a plurality of the first solder strip groups; or, All odd-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all even-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all odd-numbered welding strips among the plurality of welding strips, and each odd-numbered welding strip processing component is further configured to cut off all odd-numbered welding strips at corresponding positions to obtain a plurality of first welding strip groups; all even-numbered welding strip processing components among the plurality of welding strip processing components are configured to cooperate with clamping all odd-numbered welding strips among the plurality of welding strips, and are configured to cooperate with guiding all even-numbered welding strips among the plurality of welding strips, and each even-numbered welding strip processing component is further configured to cut off all even-numbered welding strips at corresponding positions to obtain a plurality of second welding strip groups; The spacing drive component is arranged on the base. After all the even-numbered solder strips and all the odd-numbered solder strips among the multiple solder strips are cut off, the spacing drive component is configured to drive the plurality of solder strip processing components to separate to both sides relative to the middle position of the base in the first horizontal direction, so as to adjust the first solder strip group and the second solder strip group along the first horizontal direction.

2. The welding strip processing device according to claim 1, characterized in that: The welding strip processing device comprises 2n welding strip processing components, and the 2n welding strip processing components are all slidably connected to the base, and the spacing driving component comprises n spacing driving members, wherein: The i-th spacing driving member is used to drive the i-th welding strip processing component and the 2n+1-i-th welding strip processing component to move toward the middle of the base or to separate toward both sides; or, The solder strip processing device comprises 2n+1 solder strip processing components, the n+1th solder strip processing component is fixedly connected to the base, and the remaining 2n solder strip processing components are slidably connected to the base, and the spacing drive component comprises n spacing drive members, wherein: The i-th spacing driving member is used to drive the i-th welding strip processing component and the 2n+2-i-th welding strip processing component to move toward the middle of the base or to separate toward both sides; Among them, 1≤i≤n.

3. The welding strip processing device according to claim 2, characterized in that: The separation drive member includes a driving wheel, a driven wheel, a synchronous belt and a driving member, wherein: The driving wheel and the driven wheel are rotatably mounted on the base, the synchronous belt is sleeved on the driving wheel and the driven wheel along the first horizontal direction, and the driving member is used to drive the driving wheel to rotate, so as to drive the synchronous belt to rotate; The i-th welding strip processing component is fixedly connected to the first side belt body of the synchronous belt, and the 2n+1-i-th welding strip processing component or the 2n+2-i-th welding strip processing component is fixedly connected to the second side belt body of the synchronous belt; When the driving member drives the synchronous belt to rotate, the i-th welding strip processing component and the 2n+1-i-th welding strip processing component or the 2n+2-i-th welding strip processing component are driven to move toward the middle of the base or to separate toward both sides.

4. The welding strip processing device according to claim 2, characterized in that: Among the n separation driving components, the (i+1)th separation driving component drives the corresponding two welding strip processing components to separate to both sides before the (i)th separation driving component.

5. The welding strip processing device according to claim 1, characterized in that: The base is also provided with a guide rail extending along the first horizontal direction, and a plurality of the welding strip processing components are slidably connected to the guide rail via a slider.

6. The welding strip processing device according to claim 1, characterized in that: The welding strip processing assembly comprises: a mounting bracket mounted on the base; Two clamping parts are arranged in pairs on the mounting bracket, and the two clamping parts are used to clamp one of all odd-numbered welding strips and all even-numbered welding strips from two different positions, and guide the other of all odd-numbered welding strips and all second even-numbered welding strips from two different positions; A cutting portion is arranged on the mounting bracket and located between the two clamping portions, and the cutting portion is used to cut off all welding strips guided by the clamping portions.

7. The welding strip processing device according to claim 6, characterized in that: The clamping part includes a pressure plate, a pressure plate and a pressure plate driving unit, wherein: The pressing plate is liftably mounted on the mounting bracket and is in transmission connection with the pressing plate driving unit arranged on the mounting bracket. A plurality of pressing heads are arranged on the top of the pressing plate along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. The pressure-bearing plate is fixedly mounted on the mounting bracket and extends along the second horizontal direction, a horizontal pressure-bearing surface is formed at the top of the pressure-bearing plate, and ejectors corresponding to all odd-numbered pressure heads or all even-numbered pressure heads among the plurality of pressure heads are arranged on the pressure-bearing surface, and the ejectors extend upward from the pressure-bearing surface; The pressure plate driving unit is used to drive the pressure plate to slide up and down relative to the pressure plate. When the pressure plate slides downward to a low position, all odd-numbered pressure heads among the multiple pressure heads clamp all odd-numbered welding strips among the multiple welding strips to the ejector pins one by one, and all even-numbered pressure heads among the multiple pressure heads guide all even-numbered welding strips among the multiple welding strips one by one, or, all even-numbered pressure heads among the multiple pressure heads clamp all even-numbered welding strips among the multiple welding strips to the ejector pins one by one, and all odd-numbered pressure heads among the multiple pressure heads guide all odd-numbered welding strips among the multiple welding strips one by one.

8. The welding strip processing device according to claim 7, characterized in that: The clamping portion also includes a guide comb arranged on the inner side of the pressure plate, and a plurality of guide grooves corresponding to the pressure heads are arranged on the guide comb at intervals along the second horizontal direction, and each of the guide grooves is used to guide one of the multiple welding strips.

9. The welding strip processing device according to claim 7, characterized in that: The cutting unit includes a fixed cutter, a movable cutter and a cutter driving unit, wherein: The fixed cutter is fixedly arranged on the mounting bracket and extends along the second horizontal direction, and a fixed blade is formed at the upper edge of the fixed cutter; The movable cutter is escalably mounted on the mounting bracket and is in driving connection with the cutter driving unit arranged on the mounting bracket. A plurality of hook knives are arranged side by side on the movable cutter along the second horizontal direction. The hook knives extend upward from the upper edge of the movable cutter, and a movable blade is formed at the lower edge of the hook knives. The cutter driving unit is used to drive the movable cutter to slide up and down. When the movable cutter slides upward to a high position, a gap is formed between the movable blade of each hook knife and the fixed blade of the fixed cutter for an odd-numbered welding strip or an even-numbered welding strip to pass through. When the movable cutter slides downward to a low position, each hook knife cooperates with the fixed cutter to cut off an odd-numbered welding strip or an even-numbered welding strip passing therebetween.

10. A series connection machine, used to connect IBC battery cells into strings, characterized in that: The stringing machine comprises a stringing conveying mechanism, a cell laying mechanism, a solder strip pulling mechanism, a solder strip processing device according to any one of claims 1 to 9, a solder strip conveying mechanism and a stringing mechanism, wherein: The serial conveying mechanism is used to carry at least the battery cells and the welding ribbon group; The welding ribbon pulling mechanism is used to pull a plurality of welding ribbons extending along a first horizontal direction onto the welding ribbon processing device; The welding strip processing device is used to alternately cut off all odd-numbered welding strips and all even-numbered welding strips to obtain a plurality of first welding strip groups and a plurality of second welding strip groups, and the welding strip processing device is also used to adjust the spacing between each of the first welding strip groups and the spacing between each of the second welding strip groups to a second predetermined spacing; The solder tape transport mechanism is used to place a plurality of the first solder tape groups and a plurality of the second solder tape groups on the solder tape processing device onto the serial conveying mechanism; The cell placement mechanism is used to transport a plurality of IBC cells having a first predetermined spacing to the upper surfaces of a plurality of the first welding ribbon groups and a plurality of the second welding ribbon groups located on the serial conveying mechanism; The series connection mechanism is used to connect the stacked welding ribbon groups and IBC battery sheets in series.

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