Tandem conveying device

Abstract

The utility model provides a tandem connection conveying device which comprises a conveying belt conveying mechanism and two rotary bearing mechanisms, and a tool containing station is arranged on a conveying path of the conveying belt conveying mechanism; the two rotary bearing mechanisms are oppositely arranged on the first side and the second side of the tool containing station. The rotary bearing mechanism comprises a rotary driving part and a bearing plate, and the bearing plate is installed on a movable part of the rotary driving part and located above the conveying face of the conveying belt conveying mechanism. When the two bearing plates rotate to the horizontal state, the two ends of the frame of the welding strip pressing tool are borne; when the rotary driving part drives the bearing plate to rotate downwards, the welding strip pressing tool is driven to descend, so that the bottom face of the frame falls on the conveying face of the conveying belt conveying mechanism. And when the two bearing plates rotate downwards to the release state, the welding strip pressing tool is separated. According to the tandem conveying device, the impact force of the welding strip pressing tool on the battery pieces can be reduced, and the hidden crack risk of the battery pieces is reduced.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell assembly production, and specifically to a serial conveying device. Background Art

[0002] When making a battery string, it is necessary to lay the battery cells and welding tapes on the stringing conveyor device. The stringing conveyor device transports the laid battery cells and welding tapes to the bottom of the stringing device for stringing, so that the welding tapes are welded and / or bonded to the battery cells to make a battery string. Taking the example of laying welding tapes on both the upper and lower surfaces of the battery cells, the first end of the conveyor belt of the stringing conveyor device is used as the laying end, and the battery cell laying station and the tooling laying station are sequentially arranged on the laying end along the conveying direction. First, the welding tape traction mechanism is used to lay the first group of welding tapes on the laying end of the conveyor belt, and then the battery cell placement mechanism is used to lay the first battery cell on the battery cell laying station, so that the first battery cell is pressed on the first group of welding tapes, and then the conveyor belt steps forward to step the first battery cell to the tooling laying station. , the welding tape traction mechanism then lays the second set of welding tapes on the first battery cell, and the tooling placement mechanism lays the welding tape pressing tooling on the second set of welding tapes to press the second set of welding tapes onto the first battery cell below. While laying the welding tape pressing tooling, the battery cell placing mechanism can also lay the second battery cell on the battery cell laying station to press the second battery cell onto the second set of welding tapes, and then the conveyor belt steps again to convey the second battery cell to the tooling laying station, and this cycle is repeated to complete the laying of the battery string.

[0003] In the prior art, the tooling pick-up and placement mechanism absorbs the solder ribbon pressing tooling and transfers it to the top of the battery cell, then cancels the absorption and releases the solder ribbon pressing tooling, so that the solder ribbon pressing tooling presses the solder ribbon onto the battery cell. When the tooling pick-up and placement mechanism releases the solder ribbon pressing tooling, the solder ribbon pressing tooling will have a certain impact on the battery cell below, increasing the risk of hidden cracks in the battery cell. Utility Model Content

[0004] In order to solve the above technical problems existing in the existing serial conveying device, the present application provides a serial conveying device, which adopts the following technical solutions:

[0005] A serial conveying device comprises a conveyor belt transmission mechanism and two rotating bearing mechanisms, wherein:

[0006] A tool placement station is provided on the conveying path of the conveyor belt transmission mechanism;

[0007] Two rotating bearing mechanisms are arranged oppositely on a first side and a second side of the tool placement station;

[0008] The rotary bearing mechanism comprises a rotary drive unit and a receiving plate, wherein the receiving plate is mounted on a movable part of the rotary drive unit and is located above the conveying surface of the conveyor belt conveying mechanism, and the rotary drive unit is configured to drive the receiving plate to rotate vertically so that the receiving plate rotates and switches between a horizontal state and a released state;

[0009] When the two receiving plates rotate to a horizontal state, they are used to receive the two ends of the frame of the welding strip pressing tooling, so that the bottom surface of the frame is higher than the conveying surface of the conveyor belt conveying mechanism;

[0010] When the rotary drive unit drives the receiving plate to rotate downward, the welding belt pressing tooling is driven to descend, so that the bottom surface of the frame falls on the conveying surface of the conveyor belt transmission mechanism;

[0011] When the two receiving plates are rotated downward to a released state, the welding strip pressing tooling is separated.

[0012] The serial conveying device provided by the present application is respectively provided with a rotating bearing mechanism on both sides of the tool placement station of the conveyor belt transmission mechanism. When in use, the tool picking and placing mechanism only needs to release the solder tape pressing tool to the two receiving plates in a horizontal state. At this time, since the bottom surface of the frame of the solder tape pressing tool is higher than the conveying surface, it will not cause impact on the battery cell below; the final release of the solder tape pressing tool is implemented by the receiving plate, and the rotating drive unit drives the two receiving plates to rotate downward to complete the release of the solder tape pressing tool, so that the solder tape pressing tool presses the solder tape on the battery cell. During rotation, the receiving plate can be slowly driven by the rotating drive unit to rotate to reduce the impact force of the solder tape pressing tool on the battery cell, that is, the rotating bearing mechanism can play a certain buffering role in the release of the solder tape pressing tool, thereby reducing the risk of hidden cracks in the battery cell.

[0013] In some embodiments, the rotating drive unit includes a mounting frame, a rotating shaft, a rotating plate and a driving member, wherein: the mounting frame is installed on a fixed component of the conveyor belt transmission mechanism, and the driving member is arranged on the mounting frame; the lower end of the rotating plate is connected to the driving end of the driving member, and the upper end of the rotating plate is rotatably connected to the mounting frame via the rotating shaft; the receiving plate is connected to the upper end of the rotating plate; the driving member is used to drive the rotating plate to rotate around the rotating shaft, so as to drive the receiving plate to rotate and switch between a horizontal state and a released state.

[0014] Since the driving end of the driving member is connected to the lower end of the rotating plate, the receiving plate is connected to the upper end of the rotating plate, and the rotating shaft is close to the upper end of the rotating plate, when the driving member drives the rotating plate to rotate around the rotating shaft, the rotation amplitude of the upper end of the rotating plate is small, so that the rotating plate can realize slow rotation switching between the horizontal state and the release state, and finally reduce the impact force of the welding strip pressing tool on the battery cell.

[0015] In some embodiments, the mounting frame includes a mounting plate and a rotating shaft seat, wherein: the mounting plate is fixedly mounted on a fixed component of the conveyor belt transmission mechanism; the rotating shaft seat is provided with a first waist hole extending in a vertical direction, and the rotating shaft seat is mounted on the mounting plate so as to be able to be raised and lowered by a first bolt passing through the first waist hole, and the rotating shaft is horizontally arranged on the rotating shaft seat.

[0016] Before use, the installation position of the rotating shaft seat on the mounting plate can be adjusted according to the actual size of the welding ribbon pressing tooling, so as to adjust the receiving plate to a suitable height, so that when the welding ribbon pressing tooling is placed on two receiving plates in a horizontal state, the bottom surface of the frame of the welding ribbon pressing tooling can be higher than the conveying surface.

[0017] In some embodiments, a second waist hole perpendicular to the conveying direction of the conveyor belt transmission mechanism is provided on the receiving plate, and the receiving plate is adjustably connected to the upper end of the rotating plate via a second bolt passed through the second waist hole.

[0018] Before use, adjust the installation position of the receiving plate on the rotating plate according to the size of the welding strip clamping tooling to adjust the spacing between the two receiving plates to a predetermined range to ensure that the two receiving plates can receive both ends of the frame of the welding strip clamping tooling.

[0019] In some embodiments, the driving member includes a cylinder, a transmission plate and a follower, and a vertical third waist hole is set at the lower end of the rotating plate, wherein: the cylinder is installed on the mounting frame, the transmission plate is connected to the driving end of the cylinder, and the follower is set on the transmission plate and inserted into the third waist hole; the cylinder is used to drive the transmission plate to translate, and when the transmission plate translates, the rotating plate is driven to rotate around the rotating axis through the follower.

[0020] A driving member with a simple structure is provided, which can drive a rotating plate to rotate slowly around a rotating shaft.

[0021] In some embodiments, the two ends of the frame are respectively concavely formed below to form a supporting step, the supporting step has a step top surface, and the receiving plate supports the welding strip clamping tooling by supporting the step top surface; the height difference between the step top surface and the bottom surface of the frame is greater than the thickness of the receiving plate.

[0022] In this way, when the two ends of the frame of the welding strip pressing tooling fall to the conveying surface of the conveyor belt transmission mechanism, the receiving plate can continue to rotate downward to a released state, thereby separating from the top surface of the step of the welding strip pressing tooling, so that the welding strip pressing tooling can be transported to the rear channel under the drive of the conveyor belt transmission mechanism.

[0023] In some embodiments, the solder strip pressing tool also includes several rows of pressure pins installed on the frame, each row of pressure pins is used to press a solder strip onto the battery cell; the pressure pins are elastic pressure pins that can shrink after being pressed, and the height of the pressure surface of the pressure pins in the free state is lower than the bottom surface height of the frame; when the solder strip pressing tool is supported on two horizontal supporting plates, the pressure surface of at least one pressure pin contacts the corresponding solder strip; when the bottom surface of the frame falls on the conveying surface of the conveyor belt transmission mechanism, each pressure pin elastically presses the corresponding solder strip.

[0024] When the solder strip pressing tool is supported on two horizontal receiving plates, at least one pressing pin on it has been pressed to the corresponding solder strip on the battery cell. As the solder strip pressing tool continues to descend, the pressing pins that first contact the battery cell gradually shrink until the bottom surface of the frame falls on the conveying surface of the conveyor belt transmission mechanism, and each row of pressing pins presses the corresponding solder strip onto the battery cell. That is, the pressing pins that first contact the battery cell provide a continuous upward buffering force during the falling process of the solder strip pressing tool, thereby reducing the impact of the solder strip pressing tool on the battery cell and further reducing the risk of hidden cracks in the battery cell.

[0025] In some embodiments, the lengths of the pressing pins on the solder strip pressing tool are all equal; when the solder strip pressing tool is supported on two horizontal supporting plates, the pressing surface of each pressing pin contacts the corresponding solder strip.

[0026] When the welding strip pressing tool is placed on two horizontal receiving plates, all the pressing pins contact the corresponding welding strips, thereby positioning the welding strips. As the welding strip pressing tool continues to descend, all the pressing pins shrink synchronously until the bottom surface of the frame falls on the conveying surface of the conveyor belt transmission mechanism, and each row of pressing pins completely presses the corresponding welding strips onto the battery cell. During the descent of the welding strip pressing tool, each row of pressing pins keeps pressing against the corresponding welding strips, thereby positioning the corresponding welding strips and preventing the welding strips from being offset.

[0027] In some embodiments, each row of pressure pins includes a first type of pressure pins and a second type of pressure pins, wherein the first type of pressure pins are longer than the second type of pressure pins; when the solder strip pressing tooling is supported on two horizontal supporting plates, the pressing surface of the first type of pressure pins contacts the corresponding solder strip, and the pressing surface of the second type of pressure pins does not contact the corresponding solder strip.

[0028] When the solder ribbon pressing tool is placed on two horizontal receiving plates, the first type of pressing pins in each row of pressing pins first touch the corresponding solder ribbon. As the solder ribbon pressing tool continues to descend, the first type of pressing pins gradually shrink until the bottom of the frame falls on the conveying surface of the conveyor belt transmission mechanism, and each row of pressing pins presses the corresponding solder ribbon onto the battery cell. As the solder ribbon pressing tool descends, the first type of pressing pins provide a continuous upward buffering force, thereby reducing the impact of the solder ribbon pressing tool on the battery cell, further reducing the risk of hidden cracks in the battery cell.

[0029] In some embodiments, in each row of pressure needles, the pressure needles located at the head end are first-type pressure needles, and at least one of the pressure needles located not at the head end is a second-type pressure needle; or, in each row of pressure needles, the pressure needles located at the head end are second-type pressure needles, and at least one of the pressure needles located not at the head end is a first-type pressure needle.

[0030] Regarding the situation where the solder tape traction mechanism keeps clamping the head end of the solder tape after laying the solder tape on the battery cell: since the pressure pins at the head end of each row of pressure pins are shorter second-type pressure pins, during the pressing process of the solder tape pressing tool, the second-type pressure pins at the head end do not press the head end of the solder tape, thus preventing the head end of the solder tape in the lifted state from being pressed and deformed; after the solder tape traction mechanism releases the head end of the solder tape, as the solder tape pressing tool continues to descend, the second-type pressure pins at the head end of each row of pressure pins will eventually press on the head end of the solder tape, thus effectively preventing the head warping phenomenon from occurring. Regarding the situation where the solder tape is not prone to head warping, since the pressure pins at the head end of each row of pressure pins are longer first-type pressure pins, therefore, when the solder tape pressing tool is supported on two horizontal receiving plates, the first-type pressure pins at the head end can position the head end of the solder tape, thus preventing the solder tape from being displaced.

[0031] In some embodiments, the conveyor belt transmission mechanism includes a mounting bracket, an adsorption base plate, a conveyor belt driving mechanism and a conveyor belt, wherein: the conveyor belt driving mechanism is arranged on the mounting bracket, the conveyor belt is mounted on the conveyor belt driving mechanism, and the conveyor belt is provided with adsorption holes; the adsorption base plate is installed on the mounting bracket, and is used to support the conveying surface of the conveyor belt and provide adsorption force for the adsorption holes; the conveyor belt driving mechanism is used to drive the conveyor belt to transport from the first end of the adsorption base plate toward the second end of the adsorption base plate, and the first end of the adsorption base plate is provided with a battery cell laying station and a tooling placement station in sequence along the conveying direction.

[0032] The cell placing mechanism places the cell on the conveyor belt of the cell laying station, the conveyor belt sucks the cell and conveys the cell to the tooling placement station; the welding tape traction mechanism places the welding tape on the cell located at the tooling placement station; then, the two rotating carrying mechanisms lower the welding tape pressing tooling carried thereon onto the cell to press the welding tape onto the cell; then, the conveyor belt continues to move to the rear and conveys the cell with the welding tape pressing tooling to the welding station for welding.

[0033] In some embodiments, a first magnet is arranged at the two side edges of the adsorption base plate along the conveying direction of the conveyor belt, and the first magnet is used to adsorb the frame of the welding tape pressing tooling that falls onto the conveyor belt through the conveyor belt; after the receiving plate is separated from the welding tape pressing tooling, the conveyor belt transports the welding tape pressing tooling to the rear track.

[0034] The first magnet sucks the solder strip pressing tooling from both ends, so that the pressing pins on the solder strip pressing tooling can stably press on the corresponding solder strip, preventing the solder strip pressing tooling from sliding during the conveying process, causing the solder strip to shift in position.

[0035] In some embodiments, a second magnet is provided in the middle of the adsorption base plate along the conveying direction of the conveyor belt, and the second magnet is used to adsorb the pressing needle installed on the frame of the welding belt pressing tool through the conveyor belt.

[0036] The second magnet absorbs the welding tape through the conveyor belt to press the pressing pin on the tooling, so that the pressing pin can be stably pressed on the corresponding welding tape to prevent the pressing pin from deviating from the corresponding welding tape during the conveying process.

[0037] In some embodiments, the pressing pin is a light-transmitting pressing pin, and a plurality of light-transmitting holes are provided on the frame of the solder strip pressing tooling. The light-transmitting holes are located between adjacent pressing pins, and both the pressing pin and the light-transmitting hole correspond to a glue point on the battery cell.

[0038] Since the light-transmitting pressing pins and light-transmitting holes correspond to the glue points on the battery cell, when a light source (such as infrared light, laser or UV light, etc.) irradiates the battery cell from above the solder ribbon pressing tooling, the light can pass through the light-transmitting pressing pins and light-transmitting holes to reach the glue points, causing each glue point to solidify and firmly bond the solder ribbon to the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of the serial conveying device in the embodiment of the present application at a first viewing angle;

[0040] Figure 2 for Figure 1 A partial enlarged view of the A area;

[0041] Figure 3 is a schematic structural diagram of the serial conveying device in the embodiment of the present application at a second viewing angle;

[0042] Figure 4 is a schematic diagram of the three-dimensional structure of the serial conveying device in the embodiment of the present application at a third viewing angle;

[0043] Figure 5 for Figure 4 A local enlarged view of the B area;

[0044] Figure 6 is a schematic diagram of the three-dimensional structure of the rotating bearing mechanism in the embodiment of the present application at a first viewing angle;

[0045] Figure 7 is a schematic diagram of the three-dimensional structure of the rotating bearing mechanism in the embodiment of the present application at a second viewing angle;

[0046] Figure 8 for Figure 7 CC section view;

[0047] Fig. 9 is a schematic diagram of the three-dimensional structure of the rotating bearing mechanism in the embodiment of the present application at a third viewing angle;

[0048] Fig.10 This is a schematic diagram of the effect of the welding strip pressing tool being carried on two rotating carrying mechanisms in the embodiment of the present application;

[0049] Fig.11 It is a schematic diagram of the three-dimensional structure of the welding strip pressing tool in the embodiment of the present application;

[0050] Fig.12 Schematic diagram of the top view of the welding strip pressing tool in the embodiment of the present application;

[0051] Fig.13 This is a side structural schematic diagram of the welding strip pressing tool in the first embodiment of the present application;

[0052] Fig.14 This is a side structural schematic diagram of a welding strip pressing tool in the second embodiment of the present application;

[0053] Fig.15 This is a schematic side structural diagram of a welding strip pressing tool in the third embodiment of the present application;

[0054] Fig.16 This is a side structural schematic diagram of the welding strip pressing tool in the fourth embodiment of the present application.

[0055] Figures 1 to 16 Included:

[0056] Conveyor belt transmission mechanism 1: mounting bracket 11, adsorption bottom plate 12, conveyor belt driving mechanism 13, conveyor belt 14, first magnet mounting groove 15;

[0057] Rotating bearing mechanism 2: rotating driving part 21, mounting frame 211, rotating shaft 212, rotating plate 213, driving member 214, mounting plate 2111, rotating shaft seat 2112, first waist hole 2113, cylinder 2141, transmission plate 2142, follower 2143, receiving plate 22, second waist hole 221, third waist hole 2131;

[0058] The solder strip pressing tool 3 includes: a frame 31 , a supporting step 32 , a step top surface 33 , a pressing pin 34 , a first type of pressing pin 34 a , a second type of pressing pin 34 b , a bottom surface 35 , and a light-transmitting hole 36 . DETAILED DESCRIPTION

[0059] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0060] like Figures 1 to 5 As shown, the serial conveying device in the embodiment of the present application includes a conveyor belt transmission mechanism 1 and two rotating bearing mechanisms 2, wherein:

[0061] A tool placement station is provided on the conveying path of the conveyor belt transmission mechanism 1 .

[0062] The two rotating supporting mechanisms 2 are arranged oppositely at a first side and a second side of the tool placement station.

[0063] The rotating bearing mechanism 2 includes a rotating driving part 21 and a receiving plate 22. The receiving plate 22 is installed on the movable part of the rotating driving part 21 and is located above the conveying surface of the conveyor belt transmission mechanism 1. The rotating driving part 21 is configured to drive the receiving plate 22 to rotate vertically, so that the receiving plate 22 rotates and switches between a horizontal state and a released state.

[0064] When the two receiving plates 22 rotate to a horizontal state, they are used to receive the two ends of the frame 31 of the welding strip pressing tool 3 , so that the bottom surface of the frame 31 is higher than the conveying surface of the conveyor belt conveying mechanism 1 .

[0065] When the rotary drive unit 21 drives the receiving plate 22 to rotate downward, the welding strip pressing tool 3 is driven to descend, so that the bottom surface of the frame 31 falls on the conveying surface of the conveyor belt transmission mechanism 1.

[0066] When the two receiving plates 22 rotate downward to a released state, they are separated from the welding strip pressing tool 3 .

[0067] Since the rotating bearing mechanism 2 is respectively provided on both sides of the tool placement station of the conveyor belt transmission mechanism 1, when in use, the tool placement mechanism only needs to release the welding tape pressing tool 3 to the two receiving plates 22 in a horizontal state. At this time, since the bottom surface of the frame 31 of the welding tape pressing tool 3 is higher than the conveying surface, it will not cause impact on the battery cells below.

[0068] The final release of the solder strip pressing tool 3 is implemented by the receiving plate 22. The rotating drive unit 21 drives the two receiving plates 22 to rotate downward, and the solder strip pressing tool 3 can be released, so that the solder strip pressing tool 3 presses the solder strip on the battery cell. During rotation, the receiving plate 22 can be driven to rotate slowly by the rotating drive unit 21 to reduce the impact force of the solder strip pressing tool 3 on the battery cell, that is, the rotating bearing mechanism 21 can play a certain buffering role in the release of the solder strip pressing tool 3, thereby reducing the risk of hidden cracks in the battery cell.

[0069] like Figures 6 to 9As shown, optionally, the rotation driving part 21 includes a mounting frame 211, a rotating shaft 212, a rotating plate 213 and a driving member 214, wherein: the mounting frame 211 is mounted on the fixed component of the conveyor belt transmission mechanism 1, and the driving member 214 is arranged on the mounting frame 211. The lower end of the rotating plate 213 is connected to the driving end of the driving member 214, and the upper end of the rotating plate 213 is rotatably connected to the mounting frame 211 via the rotating shaft 212. The receiving plate 22 is connected to the upper end of the rotating plate 213. The driving member 214 is used to drive the rotating plate 213 to rotate around the rotating shaft 212, so as to drive the receiving plate 22 to rotate and switch between the horizontal state and the released state.

[0070] Since the driving end of the driving member 214 is connected to the lower end of the rotating plate 213, the receiving plate 22 is connected to the upper end of the rotating plate 213, and the rotating shaft 212 is close to the upper end of the rotating plate 213, when the driving member 214 drives the rotating plate 213 to rotate around the rotating shaft 212, the rotation amplitude of the upper end of the rotating plate 213 is small, so that the rotating plate 213 can realize a slow rotation switching between the horizontal state and the release state, and finally reduce the impact force of the welding strip clamping tool 3 on the battery cell.

[0071] Of course, other existing rotation driving devices can also be used as the rotation driving part 21, as long as it can drive the receiving plate 22 to rotate and switch between the horizontal state and the released state.

[0072] Optionally, the mounting frame 211 includes a mounting plate 2111 and a rotating shaft seat 2112, wherein the mounting plate 2111 is fixedly mounted on a fixed component of the conveyor belt transmission mechanism 1. The rotating shaft seat 2112 is provided with a first waist hole 2113 extending in a vertical direction, and the rotating shaft seat 2112 is mounted on the mounting plate 2111 in a manner that it can be raised and lowered by a first bolt passing through the first waist hole 2113, and the rotating shaft 212 is horizontally arranged on the rotating shaft seat 2112.

[0073] Before use, the installation position of the rotating shaft seat 2112 on the mounting plate 2111 can be adjusted according to the actual size of the welding ribbon pressing tooling, so as to adjust the receiving plate 22 to a suitable height, so that when the welding ribbon pressing tooling is placed on two receiving plates in a horizontal state, the bottom surface of the frame of the welding ribbon pressing tooling can be higher than the conveying surface.

[0074] Optionally, a second waist hole 221 perpendicular to the conveying direction of the conveyor belt transmission mechanism 1 is provided on the receiving plate 22 , and the receiving plate 22 is adjustably connected to the upper end of the rotating plate 213 via a second bolt passing through the second waist hole 221 .

[0075] Before use, the installation position of the receiving plate 22 on the rotating plate 213 is adjusted according to the size of the welding strip pressing tool 3 to adjust the distance between the two receiving plates to a predetermined range to ensure that the two receiving plates 22 can receive the two ends of the frame 31 of the welding strip pressing tool 3.

[0076] Optionally, the driving member 214 includes a cylinder 2141, a transmission plate 2142 and a follower 2143, and a third vertical waist hole 2131 is provided at the lower end of the rotating plate 213, wherein: the cylinder 2141 is mounted on the mounting frame 211, the transmission plate 2142 is connected to the driving end of the cylinder 2141, and the follower 2143 is provided on the transmission plate 2142 and inserted into the third waist hole 2131. The cylinder 2141 is used to drive the transmission plate 2142 to translate, and when the transmission plate 2142 translates, the rotating plate 213 is driven to rotate around the rotating shaft 212 via the follower 2143.

[0077] like Fig.10 As shown, optionally, the two ends of the frame 31 of the welding strip pressing tool 3 are respectively concave to form a support step 32, and the support step 32 has a step top surface 33. The receiving plates 22 on both sides support the welding strip pressing tool 3 by supporting the step top surface 33. In particular, the height difference between the step top surface 33 and the bottom surface 35 of the frame 31 is greater than the thickness of the receiving plate 22.

[0078] In this way, when the two ends of the frame 31 of the welding strip clamping tool 3 fall to the conveying surface of the conveyor belt transmission mechanism 1, the receiving plate 22 can continue to rotate downward to a released state, thereby disengaging from the step top surface 33 of the welding strip clamping tool 3, so that the welding strip clamping tool 3 can be transported to the rear channel under the drive of the conveyor belt transmission mechanism 1.

[0079] like Figure 11 to Figure 12 As shown, the solder strip pressing tool 3 optionally further includes a plurality of rows of pressing pins 34 mounted on the frame 31, and each row of pressing pins 34 is used to press a solder strip onto the battery cell. The pressing pins are elastic pressing pins that can shrink after being pressed, and the pressing surface height of the pressing pins in the free state is lower than the bottom surface height of the frame 31.

[0080] In particular, when the welding strip pressing tool 3 is received on the two receiving plates 22 in a horizontal state, the pressing surface of at least one pressing pin 34 contacts the corresponding welding strip. When the bottom surface of the frame 31 falls on the conveying surface of the conveyor belt transmission mechanism, each pressing pin is elastically pressed onto the corresponding welding strip.

[0081] Since at least one of the pressing pins on the welding strip pressing tool 3 has been pressed to the corresponding welding strip on the battery cell when it is supported on the two receiving plates 22 in a horizontal state, as the welding strip pressing tool 3 continues to descend, the pressing pins that first contact the battery cell gradually shrink until the bottom surface of the frame 3 falls on the conveying surface of the conveyor belt transmission mechanism, and each row of pressing pins presses the corresponding welding strip to the battery cell. That is, the pressing pins that first contact the battery cell provide a continuous upward buffering force during the falling process of the welding strip pressing tool 3, thereby reducing the impact of the welding strip pressing tool 3 on the battery cell, and further reducing the risk of hidden cracks in the battery cell.

[0082] Optionally, the lengths of the pressure pins 34 on the solder strip clamping tool 3 are all equal. When the solder strip clamping tool 3 is supported on two receiving plates 22 in a horizontal state, the pressure surfaces of the pressure pins 34 contact the corresponding solder strips. Since, when the solder strip clamping tool 3 is supported on two receiving plates 22 in a horizontal state, all the pressure pins 34 contact the corresponding solder strips, the solder strips are positioned. As the solder strip clamping tool 3 continues to descend, all the pressure pins 34 shrink synchronously until the bottom surface of the frame 31 falls on the conveying surface of the conveyor belt transmission mechanism 1, and each row of pressure pins completely presses the corresponding solder strips onto the battery cell.

[0083] When the solder strip pressing tool is lowered, each row of pressing needles keeps pressing against the corresponding solder strip, thereby achieving the positioning of the corresponding solder strip and preventing the solder strip from being offset.

[0084] Optionally, each row of pressure pins 34 includes first-class pressure pins and second-class pressure pins, wherein the first-class pressure pins are longer than the second-class pressure pins. When the welding strip pressing tool 3 is supported on two receiving plates 22 in a horizontal state, the pressing surface of the first-class pressure pins contacts the corresponding welding strip, while the pressing surface of the second-class pressure pins does not contact the corresponding welding strip. As the welding strip pressing tool 3 descends, the first-class pressure pins gradually shrink until the bottom surface of the frame 31 of the welding strip pressing tool 3 falls on the conveying surface of the conveyor belt transmission mechanism 1, and each row of pressure pins 34 presses the corresponding welding strip onto the battery cell. As the welding strip pressing tool 3 is descending, the first-class pressure pins provide a continuous upward buffering force, thereby reducing the impact of the welding strip pressing tool 3 on the battery cell, further reducing the risk of hidden cracks in the battery cell.

[0085] In some application scenarios, after the solder ribbon pulling mechanism pulls the solder ribbon to the top of the battery cell, the solder ribbon pulling mechanism maintains the clamping of the head end of the solder ribbon, and only releases the solder ribbon after the solder ribbon pressing tooling presses the solder ribbon. The resulting problem is that during the descent of the solder ribbon pressing tooling, the head end of the solder ribbon is lifted up by the solder ribbon pulling mechanism, and the solder ribbon as a whole is tilted upward. When the conventional solder ribbon pressing tooling is used to press the solder ribbon, the head end of the solder ribbon will be deformed and tilted, affecting subsequent welding.

[0086] To solve this problem, optional Fig.13 As shown, in each row of pressing needles, the pressing needles located at the head end are the second type pressing needles 34b, and at least one of the pressing needles located at the non-head end is the first type pressing needle 34a.

[0087] It should be noted that the head end of the welding ribbon pressing tool refers to the end close to the welding ribbon traction mechanism.

[0088] Since the pressing pins at the head end of each row of pressing pins are the second type pressing pins 34b with shorter length, the remaining pressing pins can all be the first type pressing pins 34a with longer length, or they can be a combination of the second type pressing pins 34b and the first type pressing pins 34a. When the welding strip pressing fixture 3 of this structure is adopted and the welding strip pressing fixture 3 is supported on two receiving plates 22 in a horizontal state, the first type pressing pins 34a located at the non-head end contact the corresponding welding strip, and the second type pressing pins 34b located at the head end do not contact the head end of the welding strip, thereby preventing the head end of the welding strip in the lifted state from being pressed and deformed. When the welding strip traction mechanism releases the head end of the welding strip, the bottom surface of the frame 31 of the welding strip pressing fixture 3 falls on the conveying surface of the conveyor belt conveying mechanism 1, and the first type pressing pins 34a located at the non-head end just press the head end of the welding strip.

[0089] like Fig.13 As shown, optionally, in each row of pressing pins, the pressing pins at the tail end are also second type pressing pins 34b. In this way, during press-fitting, there is no need to distinguish the placement direction of the solder strip pressing tool 3.

[0090] Of course, in some other application scenarios, the welding tape traction mechanism releases the welding tape immediately after laying the welding tape on the battery cell. In this case, the head end of the welding tape will not be deformed by pressure and become tilted. Optionally, in each row of pressing pins, the pressing pins at the head end are first-class pressing pins 3a, and at least one of the pressing pins at the non-head end is a second-class pressing pin 3b. When the welding tape pressing tool 3 is supported on two receiving plates 22 in a horizontal state, the first-class pressing pin 34a at the head end first contacts the corresponding welding tape to implement the positioning of the welding tape.

[0091] Optional, such as Fig.14 As shown, in each row of pressure pins, the pressure pins at the head and tail ends are longer first-type pressure pins 34a, and the others are shorter second-type pressure pins 34b. When the welding strip pressing tool 3 is supported on two receiving plates 22 in a horizontal state, the two first-type pressure pins 34a at the head and tail ends first contact the corresponding welding strips, thereby positioning the welding strips from both ends, thereby improving the positioning effect of the welding strips.

[0092] Optional, such as Fig.15As shown, in each row of pressure pins, there are two longer first-type pressure pins 34a at the head end, and the others are shorter second-type pressure pins 34b. When the welding strip pressing tool 3 is supported on two receiving plates 22 in a horizontal state, at least two first-type pressure pins 34a at the head end first contact the corresponding welding strip, and the positioning of the welding strip head end is implemented from two positions, which improves the positioning effect of the welding strip.

[0093] Optional, such as Fig.16 As shown, in each row of pressing pins, the pressing pins at the head end, tail end and middle position are the longer first type pressing pins 34a, and the others are the shorter second type pressing pins 34b. When the welding strip pressing tool 3 is supported on two receiving plates 22 in a horizontal state, the three first type pressing pins 34a at the head end, tail end and middle position first contact the corresponding welding strip, thereby positioning the welding strip from both ends and the middle position, improving the positioning effect of the welding strip.

[0094] Continue to refer Figures 1 to 5 As shown, optionally, the conveyor belt transmission mechanism 1 includes a mounting bracket 11, an adsorption base plate 12, a conveyor belt driving mechanism 13 and a conveyor belt 14, wherein: the conveyor belt driving mechanism 13 is arranged on the mounting bracket 11, the conveyor belt 14 is sleeved on the conveyor belt driving mechanism 13, and the conveyor belt 14 is provided with adsorption holes. The adsorption base plate 12 is mounted on the mounting bracket 11, and is used to support the conveying surface of the conveyor belt 14 and provide adsorption force for the adsorption holes. The conveyor belt driving mechanism 13 is used to drive the conveyor belt 14 to transport from the first end of the adsorption base plate 12 toward the second end of the adsorption base plate 12, and the first end of the adsorption base plate 12 is provided with a battery cell laying station and a tooling placement station in sequence along the conveying direction.

[0095] The cell placing mechanism places the cell on the conveyor belt 14 of the cell laying station, the conveyor belt 14 sucks the cell and conveys the cell to the tooling placement station; the welding tape traction mechanism places the welding tape on the cell located at the tooling placement station; then, the two rotating carrying mechanisms 2 lower the welding tape pressing tooling 3 carried thereon onto the cell to press the welding tape onto the cell; then, the conveyor belt 14 continues to move backward and conveys the cell with the welding tape pressing tooling 3 pressed thereon to the welding station for welding.

[0096] Optionally, the conveyor belt driving mechanism 13 includes a driving motor, a driving roller and a driven roller, wherein the driving roller and the driven roller are respectively arranged at two ends of the mounting bracket 11, the conveyor belt 14 is sleeved on the driving roller and the driven roller, and the driving motor is mounted on the mounting bracket 11 and is connected to the driving roller in a transmission manner. The driving motor drives the driving roller to rotate, thereby driving the conveyor belt 14 to transport.

[0097] Optionally, first magnets are provided at both side edges of the adsorption bottom plate 12 along the conveying direction of the conveyor belt 14, and the first magnets are used to adsorb the frame 31 of the welding tape pressing tool 3 that falls onto the conveyor belt through the conveyor belt 14. After the receiving plate 22 is separated from the welding tape pressing tool 3, the conveyor belt 14 conveys the welding tape pressing tool 3 to the rear track.

[0098] The first magnet sucks the frame of the solder strip pressing tool 3 from both ends, so that the pressing pins on the solder strip pressing tool 3 can be stably pressed on the corresponding solder strip, preventing the solder strip pressing tool 3 from sliding during the conveying process, causing the solder strip to be offset.

[0099] like Figure 5 As shown, optionally, first magnet mounting grooves 15 are provided at both side edges of the adsorption bottom plate 12 along the conveying direction of the conveyor belt 14 , and the first magnets are installed in the first magnet mounting grooves 15 .

[0100] Optionally, a second magnet is provided in the middle of the adsorption base plate 12 along the conveying direction of the conveyor belt 14, and the second magnet is used to adsorb the pressing pins 34 installed on the frame 31 of the welding tape pressing tool 3 through the conveyor belt 14. The second magnet adsorbs the pressing pins 34 on the frame 31 of the welding tape pressing tool 3, so that the pressing pins 34 on the welding tape pressing tool 3 can be stably pressed on the corresponding welding tape, preventing the pressing pins 34 from deviating from the corresponding welding tape during the conveying process. Optionally, a plurality of second magnets are provided in the middle of the adsorption base plate 12, and each second magnet adsorbs a row of pressing pins 34 on the welding tape pressing tool 3 accordingly.

[0101] Optionally, the pressing needle 34 is a light-transmitting pressing needle, for example, the pressing needle 34 is a hollow structure, in which a light-transmitting hole is formed that penetrates the pressing needle 34 from top to bottom, or the pressing needle 34 is made of a light-transmitting material. Fig.12 As shown, optionally, a plurality of light-transmitting holes 36 are provided on the frame 31 of the solder strip pressing tool 3, and the light-transmitting holes 36 are located between adjacent pressing pins 34, and the pressing pins 34 and the light-transmitting holes 36 each correspond to a glue point on the battery cell.

[0102] When multiple glue dots are printed on the surface of the battery cell, since the light-transmitting pressing pins and the light-transmitting holes correspond to the positions of the glue dots on the battery cell, when a light source (such as infrared light, laser or UV light, etc.) irradiates the battery cell from above the solder ribbon pressing tooling, the light can pass through the light-transmitting pressing pins and the light-transmitting holes to reach the glue dots, causing each glue dot to solidify and firmly bond the solder ribbon to the battery cell.

[0103] The above description of the present application 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 present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the above description in the embodiments. Moreover, the embodiments mentioned in the present application are not limited to being implemented individually, and some embodiments can also be implemented in combination.

Claims

1. A serial conveying device, characterized in that: The serial conveying device comprises a conveyor belt transmission mechanism and two rotating bearing mechanisms, wherein: A tool placement station is provided on the conveying path of the conveyor belt transmission mechanism; The two rotating bearing mechanisms are arranged oppositely on a first side and a second side of the tool placement station; The rotary bearing mechanism comprises a rotary driving part and a receiving plate, wherein the receiving plate is mounted on a movable part of the rotary driving part and is located above the conveying surface of the conveyor belt conveying mechanism, and the rotary driving part is configured to drive the receiving plate to rotate vertically so that the receiving plate rotates and switches between a horizontal state and a released state; When the two receiving plates are rotated to a horizontal state, they are used to receive the two ends of the frame of the welding strip pressing tooling, so that the bottom surface of the frame is higher than the conveying surface of the conveyor belt conveying mechanism; When the rotary drive unit drives the receiving plate to rotate downward, the welding strip pressing tool is driven to descend, so that the bottom surface of the frame falls on the conveying surface of the conveyor belt conveying mechanism; When the two receiving plates are rotated downward to a released state, they are separated from the welding strip pressing tooling.

2. The serial conveying device according to claim 1, characterized in that: The rotary drive unit includes a mounting frame, a rotating shaft, a rotating plate and a driving member, wherein: The mounting frame is mounted on the fixed component of the conveyor belt transmission mechanism, and the driving member is arranged on the mounting frame; The lower end of the rotating plate is connected to the driving end of the driving member, and the upper end of the rotating plate is rotatably connected to the mounting frame via the rotating shaft; The receiving plate is connected to the upper end of the rotating plate; The driving member is used to drive the rotating plate to rotate around the rotating shaft, so as to drive the receiving plate to rotate and switch between a horizontal state and a released state.

3. The serial conveying device according to claim 2, characterized in that: The mounting frame includes a mounting plate and a rotating shaft seat, wherein: The mounting plate is fixedly mounted on the fixed component of the conveyor belt transmission mechanism; The rotating shaft seat is provided with a first waist hole extending in the vertical direction. The rotating shaft seat is mounted on the mounting plate in a manner that it can be raised and lowered by a first bolt passing through the first waist hole. The rotating shaft is horizontally arranged on the rotating shaft seat.

4. The serial conveying device according to claim 2, characterized in that: The receiving plate is provided with a second waist hole perpendicular to the conveying direction of the conveyor belt transmission mechanism, and the receiving plate is adjustably connected to the upper end of the rotating plate via a second bolt passing through the second waist hole.

5. The serial conveying device according to claim 2, characterized in that: The driving member includes a cylinder, a transmission plate and a follower, and a vertical third waist hole is provided at the lower end of the rotating plate, wherein: The cylinder is mounted on the mounting frame, the transmission plate is connected to the driving end of the cylinder, and the follower is arranged on the transmission plate and inserted into the third waist hole; The cylinder is used to drive the transmission plate to translate, and when the transmission plate translates, the rotating plate is driven to rotate around the rotating shaft via the follower.

6. The serial conveying device according to claim 1, characterized in that: The lower sides of the two ends of the frame are respectively concave to form a support step, and the support step has a step top surface, and the receiving plate supports the welding strip pressing tool by supporting the step top surface; The height difference between the top surface of the step and the bottom surface of the frame is greater than the thickness of the receiving plate.

7. The serial conveying device according to claim 1, characterized in that: The solder strip pressing tool further includes a plurality of rows of pressing pins mounted on the frame, each row of the pressing pins being used to press a solder strip onto a battery cell; the pressing pins are elastic pressing pins that can shrink after being pressed, and the pressing surface height of the pressing pins in a free state is lower than the bottom surface height of the frame; When the welding strip pressing tool is received on the two receiving plates in a horizontal state, the pressing surface of at least one of the pressing needles contacts the corresponding welding strip; When the bottom surface of the frame falls on the conveying surface of the conveyor belt transmission mechanism, each of the pressing pins elastically presses the corresponding welding strip.

8. The serial conveying device according to claim 7, characterized in that: The lengths of the pressing pins on the welding strip pressing tool are all equal; When the solder strip pressing tool is received on the two receiving plates in a horizontal state, the pressing surface of each pressing needle contacts the corresponding solder strip.

9. The serial conveying device according to claim 7, characterized in that: Each row of the pressing needles includes a first type of pressing needles and a second type of pressing needles, wherein the first type of pressing needles are longer than the second type of pressing needles; When the solder strip pressing tool is received on the two receiving plates in a horizontal state, the pressing surface of the first type of pressing needle contacts the corresponding solder strip, while the pressing surface of the second type of pressing needle does not contact the corresponding solder strip.

10. The serial conveying device according to claim 9, characterized in that: In each row of the pressing needles, the pressing needles at the head end are the first type of pressing needles, and at least one of the pressing needles at the non-head end is the second type of pressing needle; or, In each row of the pressing needles, the pressing needles located at the head end are the second type of pressing needles, and at least one of the pressing needles located at the non-head end is the first type of pressing needle.

11. The serial conveying device according to claim 1, characterized in that: The conveyor belt transmission mechanism comprises a mounting bracket, an adsorption bottom plate, a conveyor belt driving mechanism and a conveyor belt, wherein: The conveyor belt driving mechanism is arranged on the mounting bracket, the conveyor belt is sleeved on the conveyor belt driving mechanism, and the conveyor belt is provided with adsorption holes; The adsorption bottom plate is mounted on the mounting bracket to support the conveying surface of the conveyor belt and provide adsorption force for the adsorption holes; The conveyor belt driving mechanism is used to drive the conveyor belt to transport from the first end of the adsorption base plate toward the second end of the adsorption base plate. The first end of the adsorption base plate is sequentially provided with a battery cell laying station and the tooling placement station along the conveying direction.

12. The serial conveying device according to claim 11, characterized in that: First magnets are arranged at both side edges of the adsorption bottom plate along the conveying direction of the conveyor belt, and the first magnets are used to absorb the welding belt that falls onto the conveyor belt through the conveyor belt to tighten the frame of the tooling; After the receiving plate is separated from the welding strip pressing tool, the conveyor belt conveys the welding strip pressing tool to the rear channel.

13. The serial conveying device according to claim 11, characterized in that: A second magnet is arranged in the middle of the adsorption bottom plate along the conveying direction of the conveyor belt, and the second magnet is used for adsorbing the pressing pin installed on the frame of the welding belt pressing tool through the conveyor belt.

14. The serial conveying device according to claim 7, characterized in that: The pressing pin is a light-transmitting pressing pin, and a plurality of light-transmitting holes are arranged on the frame of the solder strip pressing tooling, wherein the light-transmitting holes are located between adjacent pressing pins, and the pressing pin and the light-transmitting holes both correspond to a glue point on the battery cell.

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