Battery string repair platform and repair equipment

Abstract

The utility model provides a battery string repair platform and repair equipment. The battery string repair platform comprises a mounting seat, and a first side bearing table, a middle welding table and a second side bearing table which are arranged on the mounting seat. The first side bearing table is used for bearing a battery piece located on the first side of the defective battery piece in the to-be-repaired battery string, and the second side bearing table is used for bearing a battery piece located on the second side of the defective battery piece. The middle welding table is used for bearing defective battery pieces in a battery string to be repaired, a magnetic attraction assembly is arranged in the middle welding table and used for downwards attracting the needle pressing tool, and the needle pressing tool is pressed on the defective battery pieces to be subjected to insufficient soldering repair. According to the battery string repair platform, the magnetic attraction assembly is arranged in the middle welding table, so that the middle welding table can downwards attract the pressing needle tool when the defective battery piece to be subjected to pseudo soldering repair is subjected to pseudo soldering repair, the effect that the pressing needle tool effectively presses a welding strip with pseudo soldering to the defective battery piece is ensured, and the pseudo soldering repair quality is improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell assembly production, and specifically to a cell string repair platform and repair equipment. Background Art

[0002] A battery string is made up of several battery cells welded together with welding ribbons. During the welding or circulation process, defective battery cells may appear in the battery string, such as cold solder joints, hidden cracks and other defects.

[0003] For defective battery cells with minor cold solder joints, the battery string is first placed on a rework platform, and the cold solder joints are repaired manually or with an automatic welding device so that the solder strips at the cold solder joints are re-welded to the battery cells.

[0004] During the process of repairing the cold solder joint, in order to allow the solder strip with the cold solder joint to be re-welded to the battery cell, an iron pressing needle tool is required to press the solder strip with the cold solder joint onto the defective battery cell.

[0005] However, it is difficult to ensure that the solder ribbon is stably pressed onto the defective battery cell by simply relying on the gravity of the pressing needle tool itself, and ultimately it is difficult to guarantee the repair effect. Utility Model Content

[0006] In order to solve the problem of unreliable pressing effect when the traditional pressing needle tooling relies solely on its own gravity to press the welding strip, the present application provides a battery string repair platform, and its specific technical solution is as follows:

[0007] A battery string repair platform comprises a mounting seat and a first side bearing platform, an intermediate welding platform and a second side bearing platform sequentially arranged on the mounting seat along a first horizontal direction, wherein:

[0008] The first side loading platform is used to load the battery cell located on the first side of the defective battery cell in the battery string to be repaired, and the second side loading platform is used to load the battery cell located on the second side of the defective battery cell in the battery string to be repaired;

[0009] The middle soldering station is used to carry the defective battery cells in the battery string to be repaired. A magnetic suction component is arranged inside the middle soldering station. The magnetic suction component is used to attract the pressing needle tool downwards. The pressing needle tool is pressed on the defective battery cell to be repaired on the middle soldering station.

[0010] The battery string rework platform of the present application can place the battery string on the rework platform during rework, and place the defective battery cell on the middle soldering table. Since a magnetic suction component is provided in the middle soldering table, when performing the defective battery cell rework for the defective battery cell to be repaired, the middle soldering table can absorb the pressing needle tool downwards through the magnetic suction component, thereby ensuring that the pressing needle tool can effectively press the solder strip with the defective solder joint onto the defective battery cell, ultimately improving the quality of the repair for the defective battery cell.

[0011] In some embodiments, the first side loading platform is configured to be able to translate toward or away from the middle welding platform to achieve docking and separation with the middle welding platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform; the second side loading platform is configured to be able to translate toward or away from the middle welding platform to achieve docking and separation with the middle welding platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform.

[0012] By configuring the first side loading platform and the second side loading platform to be able to translate toward or away from the middle welding platform and to be able to rise and fall in the vertical direction, the battery cell string repair platform of the present application can be used to implement the replacement and repair of the battery string to be repaired. By driving the first side loading platform and the second side loading platform to rise or fall, the adjacent battery cells on both sides of the defective battery cell can be automatically lifted to expose the welding strip to be cut, thereby facilitating the cutting of the welding strip between the defective battery cell and the adjacent battery cell, and by driving the first side loading platform and the second side loading platform to translate away from the middle welding platform, the defective battery cell that has been cut can be completely separated from the battery string.

[0013] In some embodiments, the intermediate welding platform includes a platform body and a cover plate, wherein the upper surface of the platform body is provided with a plurality of mounting grooves spaced apart along a second horizontal direction, and the mounting grooves extend along a first horizontal direction; the magnetic attraction assembly includes a plurality of magnetic strips corresponding one-to-one to the mounting grooves, and each magnetic strip is installed in a corresponding mounting groove; the cover plate covers the platform body, and the cover plate is used to carry defective battery cells.

[0014] The magnetic suction component is arranged on the upper surface of the platform, and the cover plate carrying the defective battery cell is covered on the platform, which can facilitate the installation and maintenance of the magnetic suction component. If the magnetic suction component is arranged as a plurality of magnets arranged at intervals along the second horizontal direction, the magnetic suction component can be uniformly adsorbed on the pressing needle tool, so that the pressing needle tool can be more stably pressed on the defective battery cell to be repaired. In addition, an adsorption channel can be arranged between adjacent magnets to implement the adsorption and fixation of the defective battery cell located on the cover plate.

[0015] In some embodiments, a plurality of adsorption holes are further provided on the cover plate, and the cover plate is also used to adsorb defective battery cells through the adsorption holes.

[0016] By setting adsorption holes on the cover plate, the defective battery cell can be adsorbed and fixed, thereby ensuring that the defective battery cell remains on the middle welding platform.

[0017] In some embodiments, the upper surface of the cover plate is further provided with a plurality of adsorption grooves extending along the first horizontal direction, and each adsorption groove has at least one adsorption hole.

[0018] By arranging an adsorption groove on the cover plate, the adsorption area of ​​the middle welding platform to the defective battery cell is increased, thereby further improving the adsorption stability of the middle welding platform to the defective battery cell.

[0019] In some embodiments, the platform includes a first gas collecting plate, a first sealing plate and an intermediate plate which are arranged in sequence from bottom to top, wherein: a first gas collecting groove is arranged on the upper surface of the first gas collecting plate, a first air duct connected to the first gas collecting groove is arranged in the first gas collecting plate, and the first air duct is connected to an external air extraction device; a first gas distribution groove is arranged on the lower surface of the intermediate plate, a plurality of first adsorption channels which penetrate the intermediate plate in a vertical direction and are connected to the first gas distribution groove are arranged in the intermediate plate, and the mounting groove is arranged on the upper surface of the intermediate plate and avoids the first adsorption channel; the first sealing plate is used to seal the first gas collecting groove and the first gas distribution groove from the peripheral side, and a first air vent which connects the first gas collecting groove and the first gas distribution groove is arranged on the first sealing plate; the cover plate covers the intermediate plate, and the adsorption holes on the cover plate are connected to the first adsorption channels one by one.

[0020] When the external vacuum device starts to vacuum, the air flows into the first air distribution groove through the adsorption hole and the first adsorption channel in turn, and enters the first air collecting groove through the first air permeable hole on the first sealing plate. Finally, the air is sucked into the vacuum device through the first air channel. In this process, a stable adsorption force is generated in the adsorption hole. The intermediate cavity formed by the first air distribution groove and the first air collecting groove realizes the confluence of the air in the adsorption hole and the first adsorption channel, so that the adsorption force of each adsorption hole is the same, ensuring the uniformity of the adsorption of the battery cell on the cover plate.

[0021] In some embodiments, a first heating component and a first temperature sensor are also disposed in the intermediate soldering station.

[0022] The first heating component and the first temperature sensor are arranged in the middle soldering station, so that the temperature of the middle soldering station can be monitored and the middle soldering station can be heated according to the temperature conditions, which is beneficial to the volatilization of the soldering flux during the process of soldering or welding replacement of battery cells, and improves the welding effect. The arrangement of the first temperature sensor can prevent the heating temperature of the first heating component from being too high or too low.

[0023] In some embodiments, the battery string rework platform also includes a flipping drive mechanism for driving the intermediate welding station to flip; the flipping drive mechanism includes a flipping bracket and a flipping drive motor, wherein: a first air collecting plate is installed on the flipping bracket, a transition air duct connected to the first air duct is provided in the flipping bracket, and a first air exhaust joint connected to the transition air duct is also provided on the flipping bracket, and the first air exhaust joint is used to connect to an external air exhaust device; the flipping drive motor is transmission-connected to the flipping bracket, and the flipping drive motor is used to drive the flipping bracket to flip, so as to drive the intermediate welding station to flip.

[0024] For the battery string to be replaced and repaired, after the defective battery cell is cut off from the battery string, it is not necessary to remove the defective battery cell from the middle soldering station through the transport mechanism. The defective battery cell can slide off the middle soldering station by driving the middle soldering station to flip through the flip drive mechanism, thereby improving the repair efficiency and reducing the equipment cost. By arranging the transition airway and the first exhaust joint on the flip bracket, the first airway is connected to the external exhaust device.

[0025] In some embodiments, a first side soldering platform is provided at one end of the first side support platform close to the middle soldering platform, and the first side soldering platform is used to support and adsorb the adjacent battery cell located on the first side of the defective battery cell; a second side soldering platform is provided at one end of the second side support platform close to the middle soldering platform, and the second side soldering platform is used to support and adsorb the adjacent battery cell located on the second side of the defective battery cell.

[0026] When repairing the battery string to be replaced, the first side soldering station and the second side soldering station respectively absorb the adjacent battery cells on the first side and the second side of the defective battery cell, thereby avoiding unnecessary movement of the defective battery cell and the adjacent battery cells on the first side and the second side when the first side soldering station and the second side soldering station are raised or lowered or translated relative to the middle soldering station, thereby ensuring the subsequent welding position accuracy.

[0027] In some embodiments, the first side welding platform includes a second gas collecting plate, a second sealing plate and a first adsorption plate which are arranged in sequence from bottom to top, wherein: a second gas collecting groove is arranged on the upper surface of the second gas collecting plate, a second gas extraction joint connected to the second gas collecting groove is arranged at the bottom of the second gas collecting plate, and the second gas extraction joint is used to connect an external gas extraction device; a second gas separation groove is arranged on the lower surface of the first adsorption plate, and a plurality of second adsorption channels which penetrate the first adsorption plate in a vertical direction and are connected to the second gas separation groove are arranged in the first adsorption plate; the second sealing plate is used to seal the second gas collecting groove and the second gas separation groove from the circumferential side, and a second gas separation groove connecting the second gas collecting groove and the second gas separation groove is arranged on the second sealing plate. Air vent; The second side welding platform includes a third gas collecting plate, a third sealing plate and a second adsorption plate which are arranged in sequence from bottom to top, wherein: a third gas collecting groove is arranged on the upper surface of the third gas collecting plate, a third gas extraction joint connected with the third gas collecting groove is arranged on the bottom of the third gas collecting plate, and the third gas extraction joint is used to connect an external gas extraction device; a third gas separation groove is arranged on the lower surface of the second adsorption plate, and a plurality of third adsorption channels which penetrate the second adsorption plate in a vertical direction and are connected with the third gas separation groove are arranged in the second adsorption plate; the third sealing plate is used to seal the third gas collecting groove and the third gas separation groove from the peripheral side, and a third air vent which connects the third gas collecting groove and the third gas separation groove is arranged on the third sealing plate.

[0028] When the external vacuum device starts to vacuum, the air flows into the second air distribution groove through the second adsorption channel in turn, and enters the second air collection groove through the second air permeable hole on the second sealing plate. Finally, the air is sucked into the vacuum device through the second vacuum joint. In this process, a stable adsorption force is generated in the second adsorption channel for adsorbing the adjacent battery cell on the first side of the defective battery cell. The intermediate cavity formed by the second air distribution groove and the second air collection groove realizes the confluence of the air in the second adsorption channel, so that the adsorption force of each second adsorption channel is the same, ensuring the uniformity of the adsorption of the battery cell on the first adsorption plate.

[0029] Similarly, when the external vacuum device starts to vacuum, the air flows into the third air distribution groove through the third adsorption channel in turn, and enters the third air collecting groove through the third air hole on the third sealing plate. Finally, the air is sucked into the vacuum device through the third vacuum joint. In this process, a stable adsorption force is generated in the third adsorption channel to adsorb the adjacent battery cell on the second side of the defective battery cell. The intermediate cavity formed by the third air distribution groove and the third air collecting groove realizes the confluence of the air in the third adsorption channel, so that the adsorption force of each third adsorption channel is the same, ensuring the uniformity of the adsorption of the battery cell on the second adsorption plate.

[0030] In some embodiments, a plurality of second adsorption grooves extending along the first horizontal direction are arranged on the upper surface of the first adsorption plate, and each second adsorption groove is connected to at least one second adsorption channel; a plurality of third adsorption grooves extending along the first horizontal direction are arranged on the upper surface of the second adsorption plate, and each third adsorption groove is connected to at least one third adsorption channel.

[0031] By providing the second adsorption groove on the first adsorption plate, the adsorption area of ​​the first adsorption plate to the adjacent battery sheet on the first side is increased. By providing the third adsorption groove on the second adsorption plate, the adsorption area of ​​the second adsorption plate to the adjacent battery sheet on the second side is increased.

[0032] In some embodiments, a second heating assembly and a second temperature sensor are disposed in the first side soldering station or the second side soldering station.

[0033] A second heating component and a second temperature sensor are arranged in the first side soldering station or the second side soldering station, so as to monitor the temperature of the first side soldering station or the second side soldering station and heat the first side soldering station or the second side soldering station according to the temperature conditions, which is beneficial to the volatilization of the flux during the welding process of replacing the battery cell and improves the welding effect.

[0034] The provision of the second temperature sensor can prevent the heating temperature of the second heating component from being too high or too low.

[0035] In some embodiments, the battery string rework platform further includes a first drive device and a second drive device disposed on the mounting base, wherein the first drive device is used to drive the first side load platform to translate and elevate, and the second drive device is used to drive the second side load platform to translate and elevate.

[0036] By providing the first driving device and the second driving device, the translation and lifting drive of the first side bearing platform and the second side bearing platform are realized.

[0037] In some embodiments, the first driving device includes a first translation driving mechanism, a first supporting plate and a first lifting driving mechanism, wherein the first translation driving mechanism is arranged on a mounting seat, the first supporting plate is horizontally connected to the movable part of the first translation driving mechanism, the first lifting driving mechanism is arranged on the first supporting plate, the first side supporting platform is connected to the movable part of the first lifting driving mechanism, the first translation driving mechanism is used to drive the first side supporting platform to translate via the first supporting plate, and the first lifting driving mechanism is used to drive the first side supporting platform to lift and lower; the second driving device includes a second translation driving mechanism, a second supporting plate and a second lifting driving mechanism, wherein the second translation driving mechanism is arranged on a mounting seat, the second supporting plate is horizontally connected to the movable part of the second translation driving mechanism, the second lifting driving mechanism is arranged on the second supporting plate, the second side supporting platform is connected to the movable part of the second lifting driving mechanism, the second translation driving mechanism is used to drive the second side supporting platform to translate via the second supporting plate, and the second lifting driving mechanism is used to drive the second side supporting platform to lift and lower.

[0038] The first driving device realizes translation and lifting drive of the first side load platform through the cooperation of the first translation driving mechanism and the first lifting driving mechanism. The second driving device realizes translation and lifting drive of the second side load platform through the cooperation of the second translation driving mechanism and the second lifting driving mechanism.

[0039] In some embodiments, the second lifting drive mechanism has the same structure as the first lifting drive mechanism, and the second lifting drive mechanism includes a first guide plate, a second guide plate, a first guide seat, a second guide seat and a lifting drive unit, wherein: the first guide plate and the second guide plate are arranged at intervals along the first horizontal direction at the bottom of the first side bearing platform; the first guide seat and the second guide seat are arranged at both ends of the second bearing plate, wherein the first guide seat is slidably connected to the first guide plate, and the second guide seat is slidably connected to the second guide plate; the lifting drive unit is arranged in the middle part of the second bearing plate, and the driving end of the lifting drive unit is connected to the bottom of the second side bearing platform, and the lifting drive unit is used to drive the second side bearing platform to lift and lower.

[0040] The first side load platform and the second side load platform are relatively long. If the lifting and lowering drive of the first side load platform and the second side load platform is implemented only from one position point, the first side load platform and the second side load platform are prone to tilt. Taking the second lifting drive mechanism as an example, by setting the second lifting drive mechanism, the second lifting drive mechanism in the embodiment of the present application can support and lift the second side load platform from at least three positions, namely, the first guide seat, the second guide seat and the driving end of the lifting drive unit, so as to ensure that the second side load platform remains horizontal during the lifting process.

[0041] In some embodiments, the lifting drive unit includes a rotating drive member, a rotating shaft, a first rotating arm, a second rotating arm, a first cam follower, a second cam follower, a first transmission plate and a second transmission plate, wherein: the first transmission plate and the second transmission plate are arranged at intervals along a first horizontal direction at the bottom of the second side bearing platform, the first transmission plate is provided with a first waist hole, and the second transmission plate is provided with a second waist hole; the rotating drive member is installed on the second bearing plate, the rotating shaft is connected to the driving end of the rotating drive member and extends along the first horizontal direction; the first rotating arm is fixedly sleeved on the first end of the rotating shaft, the first cam follower is arranged on the first rotating arm and inserted into the first waist hole; the second rotating arm is fixedly sleeved on the second end of the rotating shaft, the second cam follower is arranged on the second rotating arm and inserted into the second waist hole; the rotating drive member drives the first rotating arm and the second rotating arm to rotate synchronously via the rotating shaft, and when the first rotating arm and the second rotating arm rotate, they respectively push the first transmission plate and the second transmission plate to rise and fall via the first cam follower and the second cam follower.

[0042] When the rotating drive member drives the rotating shaft to rotate, the rotating shaft synchronously drives the first transmission plate and the second transmission plate through the first cam follower and the second cam follower on both sides to drive the second side load platform to rise and fall from two driving positions, thereby further improving the lifting stability of the second side load platform, so that the second side load platform remains horizontal during the lifting process.

[0043] In some embodiments, the battery string rework platform also includes a flipping drive mechanism and a light source, wherein: the middle soldering station is connected to the movable part of the flipping drive mechanism, wherein the flipping drive mechanism is used to drive the middle soldering station to flip; the light source is located below the middle soldering station, and the light source is configured to be able to move between a working position close to the middle soldering station and an avoidance position away from the middle soldering station; when the light source moves to the working position, it is used to cooperate with the positioning camera located above the middle soldering station to position the battery cell located on the middle soldering station; when the flipping drive mechanism drives the middle soldering station to flip, the light source moves to the avoidance position to avoid the middle soldering station; the battery string rework platform also includes a light source drive mechanism for driving the light source to move between the working position and the avoidance position.

[0044] For defective cells to be replaced, after cutting the defective cells from the battery string, there is no need to remove the defective cells from the middle soldering station through the transport mechanism. The defective cells can slide off the middle soldering station by driving the middle soldering station to flip through the flipping drive mechanism, thereby improving the repair efficiency and reducing the equipment cost. By controlling the light source to move between the working position close to the middle soldering station and the avoidance position far away from the middle soldering station, when the flipping drive mechanism drives the middle soldering station to flip, the light source avoids the middle soldering station to prevent the light source from colliding with the flipping middle soldering station.

[0045] In some embodiments, the battery string rework platform also includes a first regularization mechanism and a second regularization mechanism, wherein: the first regularization mechanism includes a first regularization drive unit, a first regularization plate and a first regularization spring clip, wherein the first regularization plate and the first regularization spring clip are located on both sides of the first side load platform and the middle welding platform, and the first regularization drive unit is arranged on the first side load platform; the first regularization drive unit is used to drive the first regularization plate and the first regularization spring clip to translate toward or away from the first side load platform and the middle welding platform to regularize the battery cells located on the first side load platform and the middle welding platform; the second regularization mechanism includes a second regularization drive unit, a second regularization plate and a second regularization spring clip, wherein the second regularization plate and the second regularization spring clip are located on both sides of the second side load platform, and the second regularization drive unit is arranged on the second side load platform; the second regularization drive unit is used to drive the second regularization plate and the second regularization spring clip to translate toward or away from the second side load platform to regularize the battery cells located on the second side load platform.

[0046] Before placing the battery string to be repaired on the battery string repair platform, the first regularizing plate and the first regularizing spring are at an initial position away from the middle welding platform. After placing the battery string to be repaired on the battery string repair platform, the first regularizing drive unit first drives the first regularizing plate to translate toward the first side bearing platform and the middle welding platform, and then the first regularizing drive unit drives the first regularizing spring to translate toward the first side bearing platform and the middle welding platform, and the first regularizing plate and the first regularizing spring respectively abut against the battery cells on the first side bearing platform and the middle welding platform from both sides, thereby completing the position correction of the battery cells on the first side bearing platform and the middle welding platform. The first regularizing spring implements the regularization of the battery cells on the first side bearing platform and the middle welding platform in an elastic abutment manner, which can reduce the risk of battery cells being crushed while ensuring the regularization effect. Similarly, before placing the battery string to be repaired on the battery string repair platform, the second regularizing plate and the second regularizing spring are at an initial position away from the middle welding platform. After placing the battery string to be repaired on the battery string repair platform, the second regularization drive unit first drives the second regularization plate to translate toward the second side loading platform, and then the second regularization drive unit drives the second regularization spring sheet to translate toward the second side loading platform, and the second regularization plate and the second regularization spring sheet respectively abut against the battery sheet on the second side loading platform from both sides, thereby completing the position correction of the battery sheet on the second side loading platform. The second regularization spring sheet implements the regularization of the battery sheet on the second side loading platform in an elastic abutment manner, which can reduce the risk of the battery sheet being crushed while ensuring the regularization effect.

[0047] An embodiment of the present application also provides a battery string repair device, which includes the battery string repair platform and laser welding mechanism described in any of the above items, wherein: the laser welding mechanism is arranged above the battery string repair platform, and the laser welding mechanism is used to weld the solder strip with the cold solder joint in the battery string to be repaired, so as to re-weld the solder strip on the battery cell, wherein the solder strip with the cold solder joint is located on at least one of the upper surface and the lower surface of the battery string to be repaired.

[0048] Through the cooperation of the battery string repair platform and the laser welding mechanism, the battery string repair equipment in the embodiment of the present application realizes the automatic repair of the battery string to be repaired with defective welds.

[0049] In some embodiments, the battery string repair equipment also includes a solder strip cutting mechanism, a solder strip clamping mechanism and a battery cell picking and placing mechanism, wherein: the solder strip cutting mechanism is used to cut the solder strip between the defective battery cell that needs to be replaced and the adjacent battery cell in the battery string to be repaired; the battery cell picking and placing mechanism is used to take away the cut defective battery cell, and load the replacement battery cell to the position vacated after the defective battery cell is taken away, and the replacement battery cell is a battery cell connected with a solder strip; the solder strip clamping mechanism clamps the solder strip on the replacement battery cell and the solder strip on the adjacent battery cell together one by one; the laser welding mechanism is used to weld the clamped pairs of solder strips together.

[0050] Through the cooperation of the solder ribbon cutting mechanism, the solder ribbon clamping mechanism, the battery cell taking and placing mechanism, the battery string repair platform and the laser welding mechanism, the battery string repair equipment in the embodiment of the present application realizes the automatic repair of the battery string to be repaired with the cell to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a structural schematic diagram of a battery string repair platform in an embodiment of the present application at a first viewing angle;

[0052] Figure 2 is a schematic structural diagram of a battery string repair platform in an embodiment of the present application from a second viewing angle;

[0053] Figure 3 is a schematic structural diagram of a battery string repair platform in an embodiment of the present application from a third viewing angle;

[0054] Figure 4 It is a schematic structural diagram of the first side soldering station, the middle soldering station and the second side soldering station in the embodiment of the present application at a first viewing angle;

[0055] Figure 5 It is a schematic structural diagram of the first side soldering station, the middle soldering station and the second side soldering station in the embodiment of the present application at a second viewing angle;

[0056] Figure 6 It is a schematic structural diagram of the first side soldering station, the middle soldering station and the second side soldering station in the embodiment of the present application at a third viewing angle;

[0057] Figure 7 It is a schematic diagram of the structure of the intermediate welding station in the embodiment of the present application;

[0058] Figure 8 It is a schematic diagram of the structure of the intermediate welding table and the flip driving mechanism in the embodiment of the present application at one viewing angle;

[0059] Fig. 9 for Figure 8 AA section view;

[0060] Fig.10It is a schematic diagram of the structure of the intermediate welding table and the flip driving mechanism in the embodiment of the present application from another perspective;

[0061] Fig.11 for Fig.11 BB cross-sectional view;

[0062] Fig.12 This is a schematic structural diagram of the first gas collecting plate in an embodiment of the present application;

[0063] Fig.13 This is a schematic diagram of the structure of the second lifting drive mechanism in the embodiment of the present application;

[0064] Fig.14 It is a structural schematic diagram of the lifting drive unit in the embodiment of the present application;

[0065] Figures 1 to 14 Included:

[0066] First side loading platform 1:

[0067] A first side welding platform 11, a second gas collecting plate 12, a first adsorption plate 13, a second adsorption groove 14, a second air extraction joint 15, and a second adsorption channel 16;

[0068] Intermediate soldering station 2:

[0069] The platform 21, the cover plate 22, the magnetic strip 23, the adsorption hole 24, the first adsorption slot 25,

[0070] A first gas collecting plate 26, a first sealing plate 27, an intermediate plate 28, a first gas collecting groove 29, a first gas channel 210, a first gas distribution groove 211, a first adsorption channel 212, a first air permeable hole 213, a first heating assembly 214, and a first temperature sensor 215;

[0071] Second side loading platform 3:

[0072] A second side welding station 31, a third gas collecting plate 32, a second adsorption plate 33, a second heating assembly 34, a second temperature sensor 35, a third adsorption slot 36, a third air extraction connector 37, and a third adsorption channel 38;

[0073] Flip driving mechanism 4:

[0074] A flip bracket 41, a flip drive motor 42, a transition air passage 43, and a first air extraction connector 44;

[0075] First drive device 5:

[0076] A first translation driving mechanism 51, a first carrying plate 52, and a first lifting driving mechanism 53;

[0077] Second drive device 6:

[0078] The second translation drive mechanism 61, the second carrying plate 62, the second lifting drive mechanism 63, the first guide plate 64, the second guide plate 65, the first guide seat 66, the second guide seat 67, the lifting drive unit

[0079] 68, rotary drive member 69, rotating shaft 610, first rotating arm 611, second rotating arm 612, first cam follower 613, second cam follower 614, first transmission plate 615, second transmission plate 616, first waist hole 617, second waist hole 618;

[0080] Light source 7;

[0081] Light source driving device 8;

[0082] First regulatory body 9:

[0083] A first regular plate 91 and a first regular spring piece 92;

[0084] Second regularization mechanism 10:

[0085] The second regularized plate 101 and the second regularized spring piece 102 . DETAILED DESCRIPTION

[0086] 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.

[0087] In the process of repairing the cold solder joint, in order to re-solder the cold solder joint ribbon to the battery cell, an iron press pin tool is needed to press the cold solder joint ribbon to the defective battery cell. However, it is difficult to ensure that the solder joint ribbon is stably pressed on the defective battery cell by relying solely on the gravity of the press pin tool, and ultimately it is difficult to guarantee the repair effect.

[0088] In view of this, the present application provides a battery cell repair platform, such as Figures 1 to 3 As shown, the cell rework platform in the embodiment of the present application includes a mounting seat and a first side loading platform 1, an intermediate welding platform 2 and a second side loading platform 3 which are sequentially arranged on the mounting seat along a first horizontal direction (the X-axis direction in the figure), wherein:

[0089] The first side support platform 1 is used to support the battery cells located on the first side (for example, the left side) of the defective battery cells in the battery string to be repaired, and the second side support platform 3 is used to support the battery cells located on the second side (for example, the right side) of the defective battery cells in the battery string to be repaired.

[0090] The middle soldering station 2 is used to carry the defective battery cells in the battery string to be repaired. A magnetic suction component is arranged inside the middle soldering station 2. The magnetic suction component is used to attract the pressing needle tool downward. The pressing needle tool is pressed on the defective battery cell to be repaired on the middle soldering station 2.

[0091] By using the battery string repair platform in the embodiment of the present application, the battery string to be repaired with a defective weld can be placed on the repair platform during repair, and the defective battery cell to be repaired with a defective weld can be placed on the middle soldering station. Since a magnetic suction component is provided in the middle soldering station, when repairing the defective battery cell to be repaired with a defective weld, the middle soldering station can absorb the pressing needle tool downward through the magnetic suction component, thereby ensuring that the pressing needle tool effectively presses the solder strip with a defective weld onto the defective battery cell, and finally improves the quality of the repair of the defective weld.

[0092] Optionally, the first side loading platform 1 is configured to be able to translate toward or away from the middle welding platform 2 to achieve docking and separation with the middle welding platform 2, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform 2. Similarly, the second side loading platform 3 is configured to be able to translate toward or away from the middle welding platform 2 to achieve docking and separation with the middle welding platform 2, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform 2.

[0093] Since the first side loading platform 1 and the second side loading platform 3 can be translated and raised toward or away from the middle welding platform 2, the battery string repair platform in the embodiment of the present application can repair the battery string to be repaired. The specific repair process is as follows:

[0094] In the initial state, the middle welding platform 2, the first side supporting platform 1 and the second side supporting platform 3 are connected in the horizontal direction and aligned in the vertical direction, that is, the surfaces of the middle welding platform 2, the first side supporting platform 1 and the second side supporting platform 3 are connected to form a continuous horizontal welding table surface.

[0095] First, place the battery string to be replaced and repaired on the horizontal welding table, and ensure that the defective battery cell is located on the middle welding table 2, and the battery cells on both sides of the defective battery cell are located on the first side support table 1 and the second side support table 3 respectively.

[0096] Next, the first side loading platform 1 and the second side loading platform 3 are controlled to rise or fall, for example, the first side loading platform 1 is controlled to rise and the second side loading platform 3 is controlled to fall, so that the first side loading platform 1, the second side loading platform 3 and the middle welding platform 2 are staggered in the vertical direction. At this time, the soldering strips between the defective battery cell and the adjacent battery cells on both sides are exposed, so that the soldering strip cutting mechanism can smoothly cut off the soldering strips between the defective battery cell and the adjacent battery cells on both sides. After the soldering strip cutting is completed, the first side loading platform 1 and the second side loading platform 3 are controlled to move horizontally away from the middle welding platform 2, so that the defective battery cell can be completely separated from the battery string.

[0097] like Figures 4 to 11As shown, optionally, the intermediate soldering station 2 includes a platform 21 and a cover plate 22, wherein the upper surface of the platform 21 is provided with a plurality of mounting grooves at intervals along a second horizontal direction (such as the Y-axis direction in the figure) perpendicular to the first horizontal direction, and the mounting grooves extend along the first horizontal direction. The magnetic attraction assembly includes a plurality of magnetic strips 23 corresponding to the mounting grooves one by one, and each magnetic strip 23 is installed in a corresponding mounting groove. The cover plate 22 covers the platform 21, and the cover plate 22 is used to carry defective battery cells.

[0098] like Fig.11 In the illustrated embodiment, 15 mounting slots are provided on the upper surface of the platform 21, and correspondingly, the magnetic attraction assembly includes 15 magnetic strips 23, each of which is installed in a corresponding mounting slot. Of course, in other embodiments, other numbers of mounting slots and magnetic strips 23 may be provided.

[0099] The magnetic suction component is arranged on the upper surface of the platform 21, and the cover plate 22 carrying the defective battery cell is covered on the platform, which can facilitate the installation and maintenance of the magnetic suction component. The magnetic suction component is arranged as a plurality of magnets 23 arranged at intervals along the second horizontal direction, so that the magnetic suction component can uniformly adsorb the pressing needle tool, so that the pressing needle tool can be more stably pressed on the defective battery cell to be repaired. In addition, an adsorption channel can be set between adjacent magnets 13 to implement the adsorption and fixation of the defective battery cell located on the cover plate 22.

[0100] like Figure 6 to Figure 7 As shown, optionally, a plurality of adsorption holes 24 are further provided on the cover plate 22, and the cover plate 22 is also used to adsorb defective cells through the adsorption holes 24, thereby ensuring that the defective cells remain on the intermediate soldering station 2. In order to increase the adsorption area of ​​the intermediate soldering station 2 to the defective cells and further improve the adsorption stability of the intermediate soldering station 2 to the defective cells, optionally, a plurality of first adsorption grooves 25 extending along the first horizontal direction are further provided on the upper surface of the cover plate 22, and at least one adsorption hole 24 is present in each first adsorption groove 25.

[0101] Figure 6 to Figure 7 In the illustrated embodiment, 15 first adsorption grooves 25 extending along the first horizontal direction are disposed on the upper surface of the cover plate 22, and each first adsorption groove 25 has 6 adsorption holes 24. Of course, in other embodiments, other numbers of first adsorption grooves 25 and adsorption holes 24 may be disposed.

[0102] like Figures 8 to 12As shown, optionally, the platform 21 includes a first gas collecting plate 26, a first sealing plate 27 and an intermediate plate 28 which are arranged in sequence from bottom to top, wherein: a first gas collecting groove 29 is arranged on the upper surface of the first gas collecting plate 26, a first air duct 210 which is connected to the first gas collecting groove 29 is arranged in the first gas collecting plate 26, and the first air duct 210 is connected to an external air extraction device. A first gas distribution groove 211 is arranged on the lower surface of the intermediate plate 28, a plurality of first adsorption channels 212 which penetrate the intermediate plate 28 in the vertical direction and are connected to the first gas distribution groove 211 are arranged in the intermediate plate 28, and the mounting groove is arranged on the upper surface of the intermediate plate 28 and avoids the first adsorption channel 212. The first sealing plate 27 is used to seal the first gas collecting groove 29 and the first gas distribution groove 211 from the peripheral side, and a first air vent 213 which is connected to the first gas collecting groove 29 and the first gas distribution groove 211 is arranged on the first sealing plate 27.

[0103] The cover plate 22 covers the middle plate 28 , and the adsorption holes 24 on the cover plate 22 are connected to the first adsorption channels 212 in a one-to-one correspondence.

[0104] When the external air extraction device starts to extract air, air flows into the first air distribution groove 211 through the adsorption holes 24 and the first adsorption channel 212 in sequence, and enters the first air collection groove 29 through the first air permeable hole 213 on the first sealing plate 27. Finally, the air in the first air collection groove 29 is sucked into the air extraction device through the first air channel 210. During this process, a stable adsorption force is generated in the adsorption hole 24.

[0105] The intermediate cavity formed by the first air distribution groove 211 and the first air collection groove 29 realizes the confluence of air in the adsorption holes 24 and the first adsorption channels 212, so that the adsorption forces of the adsorption holes 24 are the same, ensuring the uniformity of the adsorption of the battery cells on the cover plate 22.

[0106] like Fig. 9 and Fig.11 As shown, optionally, a first heating component 214 and a first temperature sensor 215 are also provided in the intermediate soldering station 2. By providing the first heating component 214 and the first temperature sensor 215 in the intermediate soldering station 2, the temperature of the intermediate soldering station 2 can be monitored and the intermediate soldering station 2 can be heated according to the temperature conditions, which is beneficial to the volatilization of the flux during the process of soldering or welding replacement of the battery cell, and improves the welding effect. By providing the first temperature sensor 215, the heating temperature of the first heating component 214 can be monitored to prevent the heating temperature of the first heating component 214 from being too high or too low.

[0107] Optionally, the first heating component 214 is a heating rod inserted into the middle plate 28 , and the first temperature sensor 215 is a thermocouple inserted into the first gas collecting plate 26 .

[0108] like Figures 2 to 5 and Figures 8 to 9As shown, optionally, the battery string repair platform in the embodiment of the present application also includes a flip drive mechanism 4 for driving the intermediate welding station 2 to flip. The flip drive mechanism 4 includes a flip bracket 41 and a flip drive motor 42, wherein: the first air collecting plate 26 is mounted on the flip bracket 41, and a transition air duct 43 connected to the first air duct 210 is provided in the flip bracket 41, and a first air extraction joint 44 connected to the transition air duct 43 is also provided on the flip bracket 41, and the first air extraction joint 44 is used to connect to an external air extraction device. The flip drive motor 42 is connected to the flip bracket 41 in a transmission manner, and the flip drive motor 42 is used to drive the flip bracket 41 to flip, so as to drive the intermediate welding station 2 to flip.

[0109] For a battery string to be repaired and replaced, after the defective battery cell is cut off from the battery string, it is not necessary to remove the defective battery cell from the middle soldering station 2 by a transport mechanism. The defective battery cell can slide off the middle soldering station 2 by driving the middle soldering station 2 to flip through the flip driving mechanism 4, thereby improving the repair efficiency and reducing the equipment cost. By arranging the transition air duct 43 and the first air extraction joint 44 on the flip bracket 41, the first air duct 210 is connected to the external air extraction device.

[0110] like Figure 1 and Figure 3 As shown, optionally, the cell string repair platform in the embodiment of the present application also includes a light source 7, wherein: the light source 7 is located below the intermediate soldering station 2. The light source 7 is configured to be able to move between a working position close to the intermediate soldering station 2 and a avoidance position away from the intermediate soldering station 2. When the light source 7 moves to the working position, it is used to cooperate with the positioning camera located above the intermediate soldering station 2 to position the battery cell located on the intermediate soldering station 2. When the flip drive mechanism 4 drives the intermediate soldering station 2 to flip, the light source 7 moves to the avoidance position to avoid the intermediate soldering station 2.

[0111] Optionally, the cell string repair platform in the embodiment of the present application further includes a light source driving mechanism 8 for driving the light source 7 to move between the working position and the avoidance position. The light source driving mechanism 8 can adopt various existing linear driving modules that can drive the light source 7 to translate between the working position and the avoidance position. For example, the light source driving mechanism 8 includes a cylinder, a mounting plate is connected to the telescopic rod of the cylinder, the light source 7 is mounted on the mounting plate, and the cylinder drives the light source 7 to move between the working position and the avoidance position via the mounting plate.

[0112] like Figure 1As shown, optionally, the light source 7 is set to two groups, one of which is close to the first side edge of the middle soldering station 2, and the other is close to the second side edge of the middle soldering station 2. The two groups of light sources 7 respectively illuminate the two side edges of the battery cell on the middle soldering station 2, thereby ensuring the positioning effect of the positioning camera on the battery cell on the middle soldering station 2. The two groups of light sources 7 can be synchronously driven by the same light source driving mechanism 8, or can be driven separately by two groups of light source driving mechanisms 8.

[0113] like Figure 1 As shown, optionally, a first side soldering platform 11 is provided at one end of the first side carrier 1 close to the middle soldering platform 2, and the first side soldering platform 11 is used to carry and absorb the adjacent battery cell located on the first side of the defective battery cell. A second side soldering platform 31 is provided at one end of the second side carrier 3 close to the middle soldering platform 2, and the second side soldering platform 31 is used to carry and absorb the adjacent battery cell located on the second side of the defective battery cell.

[0114] When repairing the battery string to be replaced, the first side soldering station 11 and the second side soldering station 31 respectively absorb the adjacent battery cells on the first side and the second side of the defective battery cell, thereby avoiding unnecessary movement of the defective battery cell and the adjacent battery cells on the first side and the second side when the first side soldering station 11 and the second side soldering station 31 are raised or lowered or translated relative to the middle soldering station 2, thereby ensuring the subsequent welding position accuracy.

[0115] Similar to the body 21 of the intermediate welding station 2, Figure 5 As shown, optionally, the first side welding platform 11 includes a second gas collecting plate 12, a second sealing plate and a first adsorption plate 13 which are arranged in sequence from bottom to top, wherein: a second gas collecting groove is arranged on the upper surface of the second gas collecting plate 12, and a second air extraction joint 15 which is connected to the second gas collecting groove is arranged at the bottom of the second gas collecting plate 12, and the second air extraction joint 15 is used to connect to an external air extraction device. A second gas separation groove is arranged on the lower surface of the first adsorption plate 13, and a plurality of second adsorption channels which penetrate the first adsorption plate 13 in a vertical direction and are connected to the second gas separation groove are arranged in the first adsorption plate 13. The second sealing plate is used to seal the second gas collecting groove and the second gas separation groove from the circumferential side, and a second air vent which is connected to the second gas collecting groove and the second gas separation groove is arranged on the second sealing plate.

[0116] When the external air extraction device starts to extract air, the air flows into the second air distribution groove through the second adsorption channel in sequence, and enters the second air collecting groove through the second air permeable hole on the second sealing plate, and finally, the air is sucked into the air extraction device through the second air extraction joint 15. In this process, a stable adsorption force for adsorbing the adjacent battery cell on the first side of the defective battery cell is generated in the second adsorption channel.

[0117] The intermediate cavity formed by the second air distribution groove and the second air collection groove realizes the confluence of the air in the second adsorption channel, so that the adsorption force of each second adsorption channel is the same, ensuring the uniformity of the adsorption of the battery cell thereon by the first adsorption plate.

[0118] Similarly, optionally, the second side welding platform 31 includes a third gas collecting plate 32, a third sealing plate and a second adsorption plate 33 which are arranged in sequence from bottom to top, wherein: a third gas collecting groove is arranged on the upper surface of the third gas collecting plate 32, a third air extraction joint 37 connected to the third gas collecting groove is arranged at the bottom of the third gas collecting plate 32, and the third air extraction joint 37 is used to connect to an external air extraction device. A third gas separation groove is arranged on the lower surface of the second adsorption plate 33, and a plurality of third adsorption channels which penetrate the second adsorption plate 33 in a vertical direction and are connected to the third gas separation groove are arranged in the second adsorption plate 33. The third sealing plate is used to seal the third gas collecting groove and the third gas separation groove from the circumferential side, and a third air vent which connects the third gas collecting groove and the third gas separation groove is arranged on the third sealing plate.

[0119] When the external air extraction device starts to extract air, the air flows into the third air distribution groove through the third adsorption channel in sequence, and enters the third air collection groove through the third air permeable hole on the third sealing plate, and finally, the air is sucked into the air extraction device through the third air extraction joint 37. In this process, a stable adsorption force for adsorbing the adjacent battery cell on the second side of the defective battery cell is generated in the third adsorption channel.

[0120] The intermediate cavity formed by the third air distribution groove and the third air collection groove realizes the confluence of the air in the third adsorption channel, so that the adsorption force of each third adsorption channel is the same, ensuring the uniformity of the adsorption of the battery cell thereon by the second adsorption plate.

[0121] In order to increase the adsorption area of ​​the first adsorption plate 13 to the adjacent battery cell on the first side of the defective battery cell, and further improve the adsorption stability of the first adsorption plate 13 to the adjacent battery cell on the first side, as shown in FIG. Figure 6 As shown, a plurality of second adsorption grooves 14 extending along a first horizontal direction are arranged on the upper surface of the first adsorption plate 13 , and each second adsorption groove 14 is connected to at least one second adsorption channel 16 .

[0122] Similarly, in order to increase the adsorption area of ​​the second adsorption plate 33 on the adjacent battery cell on the second side of the defective battery cell and further improve the adsorption stability of the second adsorption plate 33 on the adjacent battery cell on the second side, a plurality of third adsorption grooves 36 extending along the first horizontal direction are provided on the upper surface of the second adsorption plate 33, and each third adsorption groove 36 is connected to at least one third adsorption channel 38.

[0123] like Figure 5As shown, optionally, a second heating component 34 and a second temperature sensor 35 are provided in the second side soldering station 31. The second heating component 34 can monitor the temperature of the second side soldering station 31 and heat the second side soldering station 31 according to the temperature conditions, which is beneficial to the volatilization of the solder flux during the process of welding and replacing the battery cell. Of course, the second heating component 34 and the second temperature sensor 35 can also be provided in the first side soldering station 11.

[0124] like Figures 2 to 3 As shown, optionally, the battery string rework platform in the embodiment of the present application also includes a first driving device 5 and a second driving device 6 arranged on the mounting seat, wherein the first driving device 5 is used to drive the first side load-bearing platform 1 to translate and lift, and the second driving device 6 is used to drive the second side load-bearing platform 3 to translate and lift.

[0125] Optionally, the first driving device 5 includes a first translation driving mechanism 51, a first supporting plate 52 and a first lifting driving mechanism 53, wherein the first translation driving mechanism 51 is arranged on a mounting seat, the first supporting plate 52 is horizontally connected to a movable part of the first translation driving mechanism 51, the first lifting driving mechanism 53 is arranged on the first supporting plate 52, the first side supporting platform 1 is connected to a movable part of the first lifting driving mechanism 53, the first translation driving mechanism 51 is used to drive the first side supporting platform 1 to translate via the first supporting plate 52, and the first lifting driving mechanism 53 is used to drive the first side supporting platform 1 to rise and fall.

[0126] The first translation drive mechanism 51 can adopt various existing linear drive modules that can drive the first side support platform 1 to translate along the first horizontal direction toward or away from the middle welding platform 2, such as a screw drive module composed of a motor, a screw, a slide rail pair, etc.

[0127] Optionally, the second driving device 6 includes a second translation driving mechanism 61, a second carrying plate 62 and a second lifting driving mechanism 63, wherein the second translation driving mechanism 61 is arranged on the mounting seat, the second carrying plate 62 is horizontally connected to the movable part of the second translation driving mechanism 61, the second lifting driving mechanism 63 is arranged on the second carrying plate 62, the second side carrying platform 3 is connected to the movable part of the second lifting driving mechanism 63, the second translation driving mechanism 61 is used to drive the second side carrying platform 3 to translate via the second carrying plate 62, and the second lifting driving mechanism 63 is used to drive the second side carrying platform 3 to rise and fall.

[0128] Similarly, the second translation drive mechanism 61 can adopt various existing linear drive modules that can drive the second side support platform 3 to translate along the first horizontal direction toward or away from the middle welding platform 2, such as a screw drive module composed of a motor, a screw, a slide rail pair, etc.

[0129] As known to those skilled in the art, the lengths of the first side load platform 1 and the second side load platform 3 along the first horizontal direction are relatively long. If the first side load platform 1 and the second side load platform 3 are lifted and lowered only from one position, the first side load platform 1 and the second side load platform 3 are prone to tilt.

[0130] To solve this problem, optionally, the second lifting drive mechanism 63 has the same structure as the first lifting drive mechanism 53. Taking the second lifting drive mechanism 63 as an example, Fig.13 As shown, it includes a first guide plate 64, a second guide plate 65, a first guide seat 66, a second guide seat 67 and a lifting drive unit 68, wherein: the first guide plate 64 and the second guide plate 65 are arranged at intervals along the first horizontal direction at the bottom of the second side bearing platform 3. The first guide seat 66 and the second guide seat 67 are arranged at both ends of the second bearing plate 62, wherein the first guide seat 66 is slidably connected to the first guide plate 64, and the second guide seat 67 is slidably connected to the second guide plate 65. The lifting drive unit 68 is arranged in the middle of the second bearing plate 62, and the driving end of the lifting drive unit 68 is connected to the bottom of the second side bearing platform 3, and the lifting drive unit 68 is used to drive the second side bearing platform 3 to rise and fall.

[0131] Such arrangement enables the second lifting drive mechanism 63 to support and lift the second side support platform 3 from at least three positions, namely the first guide seat 66, the second guide seat 67 and the driving end of the lifting drive part 68, thereby ensuring that the second side support platform 3 remains horizontal during the lifting process.

[0132] like Fig.14 As shown, optionally, the lifting drive part 68 includes a rotating drive member 69, a rotating shaft 610, a first rotating arm 611, a second rotating arm 612, a first cam follower 613, a second cam follower 614, a first transmission plate 615 and a second transmission plate 616, wherein: the first transmission plate 615 and the second transmission plate 616 are arranged at intervals along the first horizontal direction at the bottom of the second side support platform 3, the first transmission plate 615 is provided with a first waist hole 617, and the second transmission plate 616 is provided with a second waist hole 618.

[0133] The rotary drive member 69 is mounted on the second carrier plate 62, and the rotary shaft 610 is connected to the driving end of the rotary drive member 69 and extends along the first horizontal direction. The first rotary arm 611 is fixedly sleeved on the first end of the rotary shaft 610, and the first cam follower 613 is arranged on the first rotary arm 611 and inserted into the first waist hole 617. The second rotary arm 612 is fixedly sleeved on the second end of the rotary shaft 610, and the second cam follower 614 is arranged on the second rotary arm 612 and inserted into the second waist hole 618.

[0134] The rotary drive member 69 drives the first rotating arm 611 and the second rotating arm 612 to rotate synchronously via the rotating shaft 610. When the first rotating arm 611 and the second rotating arm 612 rotate, the first transmission plate 615 and the second transmission plate 616 are pushed up and down via the first cam follower 613 and the second cam follower 614 respectively.

[0135] When the rotating drive member 69 drives the rotating shaft 610 to rotate, the rotating shaft 610 synchronously drives the first transmission plate 615 and the second transmission plate 616 through the first cam follower 613 and the second cam follower 614 on both sides to drive the second side support platform 3 to rise and fall from two driving positions, thereby further improving the lifting stability of the second side support platform 3, so that the second side support platform 3 remains horizontal during the lifting process.

[0136] like Figure 1 and Figure 3 As shown, optionally, the battery string repair platform in the embodiment of the present application further includes a first tidying mechanism 9 and a second tidying mechanism 10, wherein:

[0137] The first regularization mechanism 9 includes a first regularization driving unit, a first regularization plate 91 and a first regularization spring 92, wherein the first regularization plate 91 and the first regularization spring 92 are located on both sides of the first side loading platform 1 and the middle welding platform 2, and the first regularization driving unit is arranged on the first side loading platform 1. The first regularization driving unit is used to drive the first regularization plate 91 and the first regularization spring 92 to translate toward or away from the first side loading platform 1 and the middle welding platform 2, so as to regularize the battery cells located on the first side loading platform 1 and the middle welding platform 2.

[0138] Before placing the battery string to be repaired on the battery string repair platform, the first regularizing plate 91 and the first regularizing spring 92 are at an initial position away from the middle welding station 2. After placing the battery string to be repaired on the battery string repair platform, the first regularizing drive unit first drives the first regularizing plate 91 to translate toward the first side bearing platform 1 and the middle welding station 2, and then the first regularizing drive unit drives the first regularizing spring 92 to translate toward the first side bearing platform 1 and the middle welding station 2. The first regularizing plate 91 and the first regularizing spring 92 respectively abut against the battery cells on the first side bearing platform 1 and the middle welding station 2 from both sides, thereby completing the position correction of the battery cells on the first side bearing platform 1 and the middle welding station 2. The first regularizing spring 92 implements regularization on the first side bearing platform 1 and the middle welding station 2 in an elastic abutment manner, which can reduce the risk of damage to the battery cells while ensuring the regularization effect.

[0139] The second regularization mechanism 10 includes a second regularization drive unit, a second regularization plate 101 and a second regularization spring 102, wherein the second regularization plate 101 and the second regularization spring 102 are located on both sides of the second side loading platform 3, and the second regularization drive unit is arranged to correct the position of the battery sheet on the second side loading platform 3. The second regularization drive unit is used to drive the second regularization plate 101 and the second regularization spring 102 to translate toward or away from the second side loading platform 3 to regularize the battery sheet on the second side loading platform 3.

[0140] Similarly, before the battery string to be repaired is placed on the battery string repair platform, the second regularizing plate 101 and the second regularizing spring sheet 102 are at an initial position away from the middle welding platform 2. After the battery string to be repaired is placed on the battery string repair platform, the second regularizing drive unit first drives the second regularizing plate 101 to translate toward the second side loading platform 3, and then the second regularizing drive unit drives the second regularizing spring sheet 102 to translate toward the second side loading platform 3. The second regularizing plate 101 and the second regularizing spring sheet 102 respectively abut against the battery cells on the second side loading platform 3 from both sides, thereby completing the position correction of the battery cells on the second side loading platform 3. The second regularizing spring sheet 102 implements the regularization of the battery cells on the second side loading platform 3 in an elastic abutment manner, which can reduce the risk of damage to the battery cells while ensuring the regularization effect.

[0141] The embodiments of the present application also provide, for example, a battery string repair device, which includes the battery string repair platform and the laser welding mechanism in any of the above embodiments, wherein: the laser welding mechanism is arranged above the battery string repair platform, and the laser welding mechanism is used to weld the solder strip with the cold solder joint in the battery string to be repaired, so as to re-weld the solder strip on the battery cell, wherein the solder strip with the cold solder joint is located on at least one of the upper surface and the lower surface of the battery string to be repaired.

[0142] Through the cooperation of the battery string repair platform and the laser welding mechanism, the battery string repair equipment in the embodiment of the present application realizes the automatic repair of defective battery cells with cold welds in the battery string to be repaired. Since the laser energy emitted by the laser welding mechanism can penetrate the battery cells, when the welding strip with cold welds is located on the lower surface of the battery string to be repaired, there is no need to turn over the battery string, and the laser welding mechanism can directly complete the welding of the welding strip with cold welds from the top.

[0143] Optionally, the battery string repair equipment in the embodiment of the present application further includes a solder strip cutting mechanism, a solder strip clamping mechanism and a cell picking and placing mechanism, wherein: the solder strip cutting mechanism is used to cut the solder strip between the defective cell to be replaced and the adjacent cell in the battery string to be repaired. The cell picking and placing mechanism is used to take away the defective cell that has been cut off, and to load the replacement cell to the position vacated after the defective cell is taken away, and the replacement cell is a cell with a solder strip connected. The solder strip clamping mechanism is used to clamp the solder strip on the replacement cell with the solder strip on the adjacent cell together in a one-to-one correspondence. The laser welding mechanism is used to weld the clamped pairs of solder strips together.

[0144] It can be seen that through the cooperation of the solder ribbon cutting mechanism, the solder ribbon clamping mechanism, the battery cell picking and placing mechanism, the battery string repair platform and the laser welding mechanism, the battery string repair equipment in the embodiment of the present application also realizes the automatic repair of the battery string to be repaired with the cell to be replaced.

[0145] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

Claims

1. A battery string repair platform, characterized in that: The battery string repair platform comprises a mounting seat and a first side bearing platform, a middle welding platform and a second side bearing platform sequentially arranged on the mounting seat along a first horizontal direction, wherein: The first side loading platform is used to load the battery cell located on the first side of the defective battery cell in the battery string to be repaired, and the second side loading platform is used to load the battery cell located on the second side of the defective battery cell in the battery string to be repaired; The intermediate soldering station is used to carry the defective battery cell in the battery string to be repaired. A magnetic suction component is arranged inside the intermediate soldering station. The magnetic suction component is used to attract the pressing needle tool downward. The pressing needle tool is pressed on the defective battery cell to be repaired on the intermediate soldering station.

2. The battery string repair platform according to claim 1, characterized in that: The first side loading platform is configured to be able to translate toward or away from the middle welding platform to achieve docking and separation with the middle welding platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform; The second side support platform is configured to be able to translate toward or away from the intermediate welding platform to achieve docking and separation with the intermediate welding platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding platform.

3. The battery string repair platform according to claim 1, characterized in that: The intermediate welding platform comprises a platform body and a cover plate, wherein a plurality of mounting grooves are arranged at intervals along a second horizontal direction on the upper surface of the platform body, and the mounting grooves extend along the first horizontal direction; The magnetic attraction assembly includes a plurality of magnetic strips corresponding to the installation slots one by one, and each of the magnetic strips is installed in the corresponding installation slot; The cover plate covers the platform, and the cover plate is used to carry defective battery cells.

4. The battery string repair platform according to claim 3, characterized in that: The cover plate is also provided with a plurality of adsorption holes, and the cover plate is also used for adsorbing defective battery cells through the adsorption holes.

5. The battery string repair platform according to claim 4, characterized in that: The upper surface of the cover plate is further provided with a plurality of first adsorption grooves extending along a first horizontal direction, and each of the first adsorption grooves has at least one adsorption hole.

6. The battery string repair platform according to claim 4, characterized in that: The platform body includes a first gas collecting plate, a first sealing plate and an intermediate plate which are arranged in sequence from bottom to top, wherein: The upper surface of the first gas collecting plate is provided with a first gas collecting groove, the first gas collecting plate is provided with a first gas channel connected with the first gas collecting groove, and the first gas channel is connected with an external gas extraction device; The lower surface of the middle plate is provided with a first gas distribution groove, the middle plate is provided with a plurality of first adsorption channels which penetrate the middle plate in a vertical direction and are connected with the first gas distribution groove, and the mounting groove is provided on the upper surface of the middle plate and avoids the first adsorption channel; The first sealing plate is used to seal the first gas collecting groove and the first gas distribution groove from the circumferential side, and the first sealing plate is provided with a first air permeable hole communicating with the first gas collecting groove and the first gas distribution groove; The cover plate covers the middle plate, and the adsorption holes on the cover plate are connected to the first adsorption channels in a one-to-one correspondence.

7. The battery string repair platform according to claim 1, characterized in that: A first heating component and a first temperature sensor are also arranged in the middle soldering station.

8. The battery string repair platform according to claim 6, characterized in that: The battery string repair platform also includes a flip driving mechanism for driving the intermediate soldering station to flip; The flip driving mechanism comprises a flip bracket and a flip driving motor, wherein: The first air collecting plate is mounted on a flip bracket, a transition air passage communicating with the first air passage is provided in the flip bracket, a first air extraction joint communicating with the transition air passage is also provided on the flip bracket, and the first air extraction joint is used to connect to an external air extraction device; The flip drive motor is drivingly connected to the flip bracket, and the flip drive motor is used to drive the flip bracket to flip, so as to drive the middle welding table to flip.

9. The battery string repair platform according to claim 1, characterized in that: A first side soldering platform is provided at one end of the first side supporting platform close to the middle soldering platform, and the first side soldering platform is used to support and absorb the adjacent battery cell located on the first side of the defective battery cell; A second side soldering platform is disposed at one end of the second side supporting platform close to the middle soldering platform, and the second side soldering platform is used to support and absorb the adjacent battery cell located on the second side of the defective battery cell.

10. The battery string repair platform according to claim 9, characterized in that: The first side welding platform includes a second gas collecting plate, a second sealing plate and a first adsorption plate which are sequentially arranged from bottom to top, wherein: A second gas collecting groove is provided on the upper surface of the second gas collecting plate, and a second gas extraction joint connected to the second gas collecting groove is provided at the bottom of the second gas collecting plate, and the second gas extraction joint is used to connect to an external gas extraction device; A second gas separation groove is provided on the lower surface of the first adsorption plate, and a plurality of second adsorption channels are provided in the first adsorption plate, penetrating the first adsorption plate in a vertical direction and communicating with the second gas separation groove; The second sealing plate is used to seal the second gas collecting groove and the second gas distribution groove from the circumferential side, and the second sealing plate is provided with a second air permeable hole communicating with the second gas collecting groove and the second gas distribution groove; The second side welding platform includes a third gas collecting plate, a third sealing plate and a second adsorption plate which are sequentially arranged from bottom to top, wherein: A third gas collecting groove is provided on the upper surface of the third gas collecting plate, and a third gas extraction joint connected to the third gas collecting groove is provided at the bottom of the third gas collecting plate, and the third gas extraction joint is used to connect to an external gas extraction device; The lower surface of the second adsorption plate is provided with a third gas separation groove, and the second adsorption plate is provided with a plurality of third adsorption channels which penetrate the second adsorption plate in a vertical direction and are connected with the third gas separation groove; The third sealing plate is used to seal the third gas collecting groove and the third gas distribution groove from the circumferential side, and the third sealing plate is provided with a third air permeable hole communicating with the third gas collecting groove and the third gas distribution groove.

11. The battery string repair platform according to claim 10, characterized in that: A plurality of second adsorption grooves extending along the first horizontal direction are arranged on the upper surface of the first adsorption plate, and each of the second adsorption grooves is connected to at least one of the second adsorption channels; A plurality of third adsorption grooves extending along the first horizontal direction are arranged on the upper surface of the second adsorption plate, and each of the third adsorption grooves is communicated with at least one of the third adsorption channels.

12. The battery string repair platform according to claim 9, characterized in that: A second heating component and a second temperature sensor are disposed in the first side soldering station or the second side soldering station.

13. The battery string repair platform according to claim 2, characterized in that: The battery string repair platform also includes a first driving device and a second driving device arranged on the mounting seat, wherein the first driving device is used to drive the first side load platform to translate and lift, and the second driving device is used to drive the second side load platform to translate and lift.

14. The battery string repair platform according to claim 13, characterized in that: The first driving device comprises a first translation driving mechanism, a first bearing plate and a first lifting driving mechanism, wherein the first translation driving mechanism is arranged on the mounting seat, the first bearing plate is horizontally connected to a movable part of the first translation driving mechanism, the first lifting driving mechanism is arranged on the first bearing plate, the first side bearing platform is connected to a movable part of the first lifting driving mechanism, the first translation driving mechanism is used to drive the first side bearing platform to translate via the first bearing plate, and the first lifting driving mechanism is used to drive the first side bearing platform to move upward and downward; The second driving device includes a second translation driving mechanism, a second carrying plate and a second lifting driving mechanism, wherein the second translation driving mechanism is arranged on the mounting seat, the second carrying plate is horizontally connected to the movable part of the second translation driving mechanism, the second lifting driving mechanism is arranged on the second carrying plate, the second side carrying platform is connected to the movable part of the second lifting driving mechanism, the second translation driving mechanism is used to drive the second side carrying platform to translate via the second carrying plate, and the second lifting driving mechanism is used to drive the second side carrying platform to rise and fall.

15. The battery string repair platform according to claim 14, characterized in that: The second lifting drive mechanism has the same structure as the first lifting drive mechanism, and the second lifting drive mechanism includes a first guide plate, a second guide plate, a first guide seat, a second guide seat and a lifting drive unit, wherein: The first guide plate and the second guide plate are spaced apart at the bottom of the second side bearing platform along the first horizontal direction; The first guide seat and the second guide seat are arranged at two ends of the second bearing plate, wherein the first guide seat is slidably connected to the first guide plate, and the second guide seat is slidably connected to the second guide plate; The lifting drive unit is arranged in the middle of the second supporting plate, and the driving end of the lifting drive unit is connected to the bottom of the second side supporting platform. The lifting drive unit is used to drive the second side supporting platform to lift and lower.

16. The battery string repair platform according to claim 15, characterized in that: The lifting drive unit includes a rotating drive member, a rotating shaft, a first rotating arm, a second rotating arm, a first cam follower, a second cam follower, a first transmission plate and a second transmission plate, wherein: The first transmission plate and the second transmission plate are arranged at intervals on the bottom of the second side bearing platform along the first horizontal direction, the first transmission plate is provided with a first waist hole, and the second transmission plate is provided with a second waist hole; The rotary drive member is mounted on the second bearing plate, and the rotating shaft is connected to the driving end of the rotary drive member and extends along the first horizontal direction; The first rotating arm is fixedly sleeved on the first end of the rotating shaft, and the first cam follower is arranged on the first rotating arm and inserted into the first waist hole; The second rotating arm is fixedly sleeved on the second end of the rotating shaft, and the second cam follower is arranged on the second rotating arm and inserted into the second waist hole; The rotary drive member drives the first rotating arm and the second rotating arm to rotate synchronously via the rotating shaft. When the first rotating arm and the second rotating arm rotate, the first transmission plate and the second transmission plate are pushed up and down via the first cam follower and the second cam follower respectively.

17. The battery string repair platform according to claim 1, characterized in that: The battery string repair platform also includes a flip drive mechanism and a light source, wherein: The intermediate soldering station is connected to the movable part of the flip driving mechanism, wherein the flip driving mechanism is used to drive the intermediate soldering station to flip; The light source is located below the intermediate soldering station, and the light source is configured to be movable between a working position close to the intermediate soldering station and a avoiding position away from the intermediate soldering station; When the light source moves to the working position, it is used to cooperate with the positioning camera located above the intermediate soldering station to position the battery cell located on the intermediate soldering station; When the flip driving mechanism drives the intermediate soldering station to flip, the light source moves to the avoidance position to avoid the intermediate soldering station; The battery string repair platform further includes a light source driving mechanism for driving the light source to move between the working position and the avoidance position.

18. The battery string repair platform according to claim 1, characterized in that: The battery string repair platform further includes a first regularization mechanism and a second regularization mechanism, wherein: The first tidying mechanism comprises a first tidying driving unit, a first tidying plate and a first tidying spring sheet, wherein the first tidying plate and the first tidying spring sheet are located on both sides of the first side bearing platform and the middle welding platform, and the first tidying driving unit is arranged on the first side bearing platform; The first regularization driving unit is used to drive the first regularization plate and the first regularization spring sheet to translate toward or away from the first side loading platform and the middle welding platform to regularize the battery cells located on the first side loading platform and the middle welding platform; The second tidying mechanism comprises a second tidying driving part, a second tidying plate and a second tidying spring sheet, wherein the second tidying plate and the second tidying spring sheet are located on both sides of the second side bearing platform, and the second tidying driving part is arranged on the second side bearing platform; The second regularization driving unit is used to drive the second regularization plate and the second regularization spring sheet to translate toward or away from the second side supporting platform to regularize the battery cells located on the second side supporting platform.

19. A battery string repair device, characterized in that: The battery string repair equipment comprises a battery string repair platform and a laser welding mechanism as claimed in any one of claims 1 to 18, wherein: The laser welding mechanism is arranged above the battery string repair platform, and is used to weld the solder strip with the cold solder joint in the battery string to be repaired, so as to re-weld the solder strip on the battery cell, wherein the solder strip with the cold solder joint is located on at least one of the upper surface and the lower surface of the battery string to be repaired.

20. The battery string repair equipment according to claim 19, characterized in that: The battery string repair equipment also includes a solder strip cutting mechanism, a solder strip clamping mechanism and a battery cell taking and placing mechanism, wherein: The welding strip cutting mechanism is used to cut the welding strip between the defective battery cell to be replaced and the adjacent battery cell in the battery string to be repaired; The cell taking and placing mechanism is used to take away the defective cell that has been cut off, and to load a replacement cell to the position vacated after the defective cell is taken away, wherein the replacement cell is a cell connected with a welding ribbon; The solder strip clamping mechanism clamps the solder strip on the replacement battery cell and the solder strip on the adjacent battery cell together in a one-to-one correspondence; The laser welding mechanism is used to weld the clamped pairs of welding strips together.

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