A rotary power battery pole welding device and welding method

Abstract

The present invention relates to the technical field of battery production, and particularly relates to a rotary power battery pole column welding device and a welding method. The welding device includes a turntable that rotates around its axis. The rotation direction of the turntable has a rotation starting point and a rotation ending point. The rotation starting point is the loading position of the turntable, and the rotation ending point is the unloading position of the turntable; a processing mechanism, which includes: a loading and unloading mechanism, a first battery cell polarity detection component, a first battery cell flipping component, a laser welding component, an external battery welding appearance detection component, a second battery cell flipping component, and a second battery cell polarity detection component arranged in sequence along the direction from the rotation starting point to the rotation ending point of the turntable outside the turntable. This rotary power battery pole column welding device can automatically detect and weld the battery, and has the advantages of saving labor and cost.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a turntable type power battery pole column welding device and a welding method. Background Art

[0002] The battery pole column is a terminal for connecting the battery with external components. Currently, the method for producing the battery pole column is to use laser welding to weld the edge of the pole column on the edge of the battery pole column mounting groove to fix the pole column on the end of the battery.

[0003] Welding the pole column is not simply welding. To ensure the welding quality, it is also necessary to detect the battery core before welding, then manually turn the battery over, and then perform welding. After welding the pole column, it is also necessary to repeat the detection of the battery core. However, currently, each process in the welding is carried out manually separately and cannot be carried out quickly, which leads to low production efficiency or the problem of missing parts. Summary of the Invention

[0004] One of the purposes of the present invention is to avoid the deficiencies in the prior art and provide a turntable type power battery pole column welding device, which can automatically detect and weld the battery, and has the advantages of saving manpower and cost.

[0005] Another purpose of the present invention is to provide a welding method for the turntable type power battery pole column welding device.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] Provide a turntable type power battery pole column welding device, including:

[0008] A turntable that rotates around its axis. The rotation direction of the turntable has a rotation starting point and a rotation ending point. The rotation starting point is the loading position of the turntable, and the rotation ending point is the unloading position of the turntable;

[0009] A processing mechanism, which includes: a loading and unloading mechanism, a first battery core polarity detection component, a first battery flipping component, a laser welding component, an external welding appearance detection component for the battery, a second battery flipping component, and a second battery core polarity detection component arranged in sequence along the direction from the rotation starting point to the rotation ending point of the turntable outside the turntable.

[0010] In some embodiments, the turntable is arranged on one side of a conveyor belt for transporting batteries, and the loading and unloading mechanism is arranged at the position between the conveyor belt and the turntable;

[0011] The loading and unloading mechanism includes: a rotating frame, the rotating frame is provided with a rotating plate, and at least two groups of first clamps are hung on the rotating plate, wherein at least two groups of first clamps are oppositely arranged on the opposite sides of the rotating plate.

[0012] The rotating frame drives one group of first clamps to clamp the battery on the conveyor belt and load it to the rotation starting point through rotation, and at the same time drives the other group of first clamps to clamp the battery at the rotation ending point and unload it to the conveyor belt.

[0013] In some embodiments, the conveyor belt is provided with a loading station, and a divider is arranged below the loading station. When the battery is transported to the loading station, the lifting shaft of the divider rises and lifts the battery on the loading station to the first clamp, and the first clamp loads the battery to the rotation starting point.

[0014] In some embodiments, the first battery core polarity detection component and the second battery core polarity detection component include:

[0015] A bracket, a second cylinder is arranged on the bracket, the telescopic rod of the second cylinder is connected with a battery core probe, and the battery core probe points to the battery on the turntable.

[0016] When the turntable drives the battery to the position of the battery core probe, the second cylinder drives the battery core probe to press against the inner core of the battery, and the battery core probe detects whether there is a battery core in the inner core of the battery.

[0017] In some embodiments, the first battery flipping component and the second battery flipping component include:

[0018] A frame, the frame approaches or moves away from the turntable along the slide rail;

[0019] A rotating shaft, one end of the rotating shaft is installed on the frame, and a second clamp is arranged at the other end. When the turntable drives the battery to the second clamp, the frame drives the second clamp to move and clamp the battery on the turntable, and the rotating shaft drives the second clamp holding the battery to flip, so that the battery flips.

[0020] In some embodiments, the laser welding component includes:

[0021] A laser, the laser points to the battery on the turntable, and the laser is used for laser welding the battery pole column;

[0022] A positioning sleeve, the positioning sleeve is connected with a nitrogen nozzle and a dust suction hood. When laser welding the battery pole column, the positioning sleeve moves and surrounds the outer periphery of the battery end where the battery pole column is located.

[0023] In some embodiments, the laser welding component further includes a fixing frame.

[0024] The laser is disposed on the top of the fixing bracket. A vertical guide rail is provided below the laser. The positioning sleeve is sleeved on the guide rail, and the positioning sleeve moves along the guide rail to sleeve or disengage from the outer periphery of the battery end.

[0025] In some embodiments, a tensile test assembly is further included for the filling tightness of the battery inner core. The tensile test assembly includes:

[0026] A lifting assembly. A suction cup is provided at the top of the lifting assembly. The lifting assembly drives the suction cup to approach or move away from the top of the battery. The suction cup sucks the battery inner core to test the filling tightness of the battery inner core in the battery case.

[0027] Advantages of a turntable type power battery pole welding device of the present invention:

[0028] The turntable type power battery pole welding device of the present invention is provided with a loading and unloading mechanism for automatically loading and unloading batteries, a first cell polarity detection assembly for first detecting the cell before welding, a first battery flipping assembly for automatically flipping the battery after detecting the cell, a laser welding assembly for laser welding the battery poles, a battery outer welding appearance detection assembly for detecting the appearance of the welded battery, a second battery flipping assembly for flipping the welded battery, and a second cell polarity detection assembly for re-detecting the cell of the welded battery in sequence on the turntable. Each step is compact and coherent, improving the detection accuracy, realizing efficient welding of the battery, and there will be no problem of missing parts, and the production cost is effectively reduced.

[0029] To achieve the second above object, the present invention provides the following technical solutions:

[0030] A welding method of the above turntable type power battery pole welding device is provided. A plurality of C-shaped positioning ports are opened along the edge of the turntable. The plurality of C-shaped positioning ports position the batteries in each process in the vertical direction. The turntable drives the rotation of each C-shaped positioning port by rotation. The welding method includes the following steps:

[0031] Step 1: The loading and unloading mechanism loads the battery on the conveyor belt onto the C-shaped positioning port of the turntable, making the battery inner core of the battery face upward. The turntable rotates and makes the battery flow to the station where the first cell polarity detection assembly is located. The first cell polarity detection assembly detects whether there is a cell in the battery inner core.

[0032] Step 2: The turntable rotates and makes the battery flow to the station where the first battery flipping assembly is located. The first battery flipping assembly flips the battery to make the end provided with the pole face upward.

[0033] Step 3: The turntable rotates to transfer the battery to the station where the laser welding assembly is located, and the laser welding assembly welds the battery terminal posts.

[0034] Step 4: The turntable rotates to transfer the battery to the station where the external battery welding appearance detection assembly is located. The external battery welding appearance detection assembly observes the welded battery terminal posts to judge the welding effect. If the welding is poor, it is recorded as a defective product.

[0035] Step 5: The turntable rotates to transfer the battery to the station where the second battery flipping assembly is located. The second battery flipping assembly flips the welded battery to make the battery core face upward.

[0036] Step 6: The turntable rotates to transfer the battery to the station where the second battery core polarity detection assembly is located. The second battery core polarity detection assembly detects again whether there is a battery core in the battery core. The loading and unloading mechanism unloads the detected battery onto the conveyor belt.

[0037] In some embodiments, in Step 1 and Step 6, the first battery core polarity detection assembly and the second battery core polarity detection assembly press against the battery core through the battery core probe to sense whether there is a battery core in the battery core.

[0038] In Step 2 and Step 5, the first battery flipping assembly and the second battery flipping assembly drive the second fixture close to the turntable along the slide rail through the frame. The second fixture clamps the battery on the turntable. Subsequently, the frame drives the second fixture with the clamped battery to move backward, drives the second fixture to flip through the rotating shaft, drives the battery on the second fixture to flip. After the battery flips, the frame drives the second fixture close to the turntable, and the second fixture makes the flipped battery be placed back on the turntable again.

[0039] In Step 3, when welding the battery terminal posts, a positioning collar is sleeved on the outer periphery of the end of the battery where the terminal post is located, so that during the laser welding process, the nitrogen nozzle on the positioning sleeve adds nitrogen protection to the end of the battery terminal post and the dust suction hood on the positioning sleeve performs dust suction treatment.

[0040] In Step 4, the external battery welding appearance detection assembly detects the battery appearance state through visual scanning.

[0041] Advantages of the welding method of the turntable type power battery terminal post welding device of the present invention:

[0042] For the welding method of the turntable type power battery terminal post welding device of the present invention, each step is carried out in an orderly and compact manner, effectively improving the welding quality and ensuring that there are no defective products. Description of the Drawings

[0043] Figure 1It is the first visual structural diagram of the rotary power battery pole welding device in the specific implementation manner of the present invention.

[0044] Figure 2 It is the second visual structural diagram of the rotary power battery pole welding device in the specific implementation manner of the present invention.

[0045] Figure 3 It is Figure 2 The partial enlarged schematic diagram at position A in

[0046] Figure 4 It is Figure 2 The partial enlarged schematic diagram at position B in

[0047] Figure 5 It is Figure 2 The partial enlarged schematic diagram at position C in

[0048] Figure 6 It is Figure 2 The partial enlarged schematic diagram at position D in

[0049] Figure 7 It is Figure 2 The partial enlarged schematic diagram at position E in

[0050] Figure 8 It is the first visual structural diagram of the loading and unloading mechanism in the specific implementation manner of the present invention.

[0051] Figure 9 It is the second visual structural diagram of the loading and unloading mechanism in the specific implementation manner of the present invention.

[0052] Figure 10 It is the first visual structural diagram of the laser welding assembly in the specific implementation manner of the present invention.

[0053] Figure 11 It is the second visual structural diagram of the laser welding assembly in the specific implementation manner of the present invention.

[0054] Figure 12 It is the structural diagram of the tensile test assembly in the specific implementation manner of the present invention.

[0055] Reference numerals:

[0056] 1, turntable; 2, shaft core; 3, rotation starting point; 4, rotation ending point; 5, battery.

[0057] 61, loading and unloading mechanism:

[0058] 601, rotating plate; 602, first fixture; 603, rotating rod; 604, clamping jaw; 6041, first holding arm; 6042, second holding arm.

[0059] 71. First battery cell polarity detection component, 72. Second battery cell polarity detection component:

[0060] 701. Bracket; 703. Battery cell probe; 704. Inner battery core; 705. Battery cell.

[0061] 81. First battery flipping component, 82. Second battery flipping component:

[0062] 801. Frame; 802. Rotating shaft; 803. Second fixture; 804. First gear; 805. Second gear;

[0063] 806. First pressing plate; 807. Second pressing plate; 808. Positioning groove;

[0064] 9. Laser welding component:

[0065] 901. Laser; 902. Battery pole; 903. Positioning sleeve; 904. Nitrogen nozzle; 905. Dust suction hood; 906. Fixed frame; 907. Guide rail;

[0066] 10. Battery external welding appearance detection component:

[0067] 11. Conveyor belt; 111. Slide groove; 112. Cup holder;

[0068] 12. Divider; 121. Lifting shaft

[0069] 14. Push rod;

[0070] 15. Tensile test component: 151. Suction cup; 152. Support frame; 153. Lifting rod; 154. Clamping claw

[0071] 16. C-shaped positioning port. Detailed implementation manners

[0072] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0073] The terms used in the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a", "the", and "the" used in the present invention and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0074] It should be understood that although the terms "first", "second", "third", etc. may be used in the present invention to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0075] Embodiment 1

[0076] The turntable 1 type power battery pole column 902 welding device disclosed in this embodiment, as Figures 1 - 12 shown, includes:

[0077] A turntable 1, the turntable 1 rotates around its axis core 2, a rotation starting point 3 and a rotation ending point 4 are provided in the rotation direction of the turntable 1, the rotation starting point 3 is the loading position of the turntable 1, and the rotation ending point 4 is the unloading position of the turntable 1;

[0078] During the operation process, the battery 5 is arranged on the turntable 1. The function of the turntable 1 is to drive the battery 5 to rotate. During the rotation of the turntable 1, each process processes the battery 5 on the turntable 1, and the turntable 1 occupies less space in the length direction, making the processing flow more compact. A through hole is opened in the center of the turntable 1, and the through hole is linked to the rotating shaft 802, and the rotating shaft 802 drives the turntable 1 to rotate. In order to better place the battery 5 on the turntable 1, the disk surface of the turntable 1 is horizontally arranged.

[0079] A processing mechanism, the processing mechanism includes: a loading and unloading mechanism 61, a first battery core polarity detection component 71, a first battery flipping component 81, a laser welding component 9, an external battery welding appearance detection component 10, a second battery flipping component 82, and a second battery core polarity detection component 72, which are arranged in sequence along the direction from the rotation starting point to the rotation ending point 4 of the turntable 1 outside the turntable 1.

[0080] Specifically, arranging the loading and unloading mechanism 61, the first battery core polarity detection component 71, the first battery flipping component 81, the laser welding component 9, the external battery welding appearance detection component 10, the second battery flipping component 82, and the second battery core polarity detection component 72 in sequence along the direction from the rotation starting point to the rotation ending point 4 of the turntable 1 effectively defines the processing sequence of the battery 5, that is, it is processed in sequence through the components on the following each process: the loading and unloading mechanism 61, the first battery core polarity detection component 71, the first battery flipping component 81, the laser welding component 9, the external battery welding appearance detection component 10, the second battery flipping component 82, and the second battery core polarity detection component 72.

[0081] Among them, the loading and unloading mechanism 61 is used for loading the battery 5 and unloading the battery 5 after completing each process; the first cell polarity detection component 71 is used for the first detection of the cell 705; the first battery flipping component 81 is used to automatically flip the battery 5 after detecting the cell 705, facilitating subsequent welding of the battery terminals of the battery 5; the laser welding component 9 is used for laser welding of the battery terminals 902; the external welding appearance detection component 10 of the battery is used for detecting the appearance of the welded battery 5; the second battery flipping component 82 flips the welded battery 5; the second cell 705 detection group is used for re-detecting the inner core 704 of the welded battery, and finally the loading and unloading mechanism 61 unloads the battery 5 on the turntable 1 again; each processing procedure is compact and coherent, improving the detection accuracy, realizing efficient welding of the battery 5, and there will be no problem of missing parts. And it also effectively reduces the production cost.

[0082] In this embodiment, as Figure 3 、 8 shown in FIGS. 8 to 9, the turntable 1 is arranged on one side of the conveyor belt 11, the conveyor belt 11 is used for transporting the battery 5, and the loading and unloading mechanism 61 is arranged at the position between the conveyor belt 11 and the turntable 1;

[0083] Setting the turntable 1 on one side of the conveyor belt 11 facilitates the battery 5 on the conveyor belt 11 to be quickly transported onto the conveyor belt 11. Among them, the loading and unloading mechanism 61 can quickly load the battery 5 on the conveyor belt 11 onto the turntable 1 and quickly unload the battery 5 on the turntable 1 onto the conveyor belt 11, and the conveyor belt 11 continues to transport the unloaded battery 5.

[0084] The loading and unloading mechanism 61 includes: a rotating frame, the rotating frame is provided with a rotating plate 601, the rotating plate 601 is hung with at least two groups of first jigs 602, and at least two groups of first jigs 602 are oppositely arranged on the opposite sides of the rotating plate 601,

[0085] The specific structure of the rotating frame is a rotating rod 603 that rotates around its own axis 2. The rotating rod 603 is provided with a rotating plate 601, and the rotating plate 601 rotates around the rotating rod 603, and the bottom surface of the rotating plate 601 points to the side of the conveyor belt 11. Specifically, the rotating plate 601 is a square rotating plate 601, and four groups of jigs are hung on the square rotating plate 601. The four groups of jigs are centrally symmetric and equidistantly hung on the rotating plate 601. When in use, the rotating rod 603 drives the rotating plate 601 to rotate, and the rotating plate 601 drives to make the loading and unloading frequency higher. Since jigs are hung on all four sides of the square rotating plate 601, each time the rotating plate 601 rotates 90°, one loading and unloading can be achieved, further improving the production efficiency or adapting to a higher production frequency.

[0086] The specific structure of the first fixture 602 includes a plurality of jaws 604. Each of the jaws 604 includes a first holding arm 6041 and a second holding arm 6042. The first holding arm 6041 and the second holding arm 6042 are close to form a clamping ring, and the first holding arm 6041 and the second holding arm 6042 are separated to be in a loose state. Therefore, exemplarily, by using a cylinder to drive the first holding arm 6041 and the second holding arm 6042 to approach or separate from each other, the first fixture 602 clamps or releases the battery 5.

[0087] Further, each of the jaws 604 is hung on the turntable 601 by a single cylinder. Each jaw 604 can be driven by a cylinder to move up or down, so as to clamp or release the battery 5.

[0088] In this embodiment, as Figure 3 , 8 shown in FIG. 9, the conveyor belt 11 is provided with a loading station, and a divider 12 is arranged below the loading station. As an existing product, the main function of the divider 12 is to accurately raise or lower its lifting shaft 121 according to the set time, so as to divide and lift the battery 5 at regular intervals. Therefore, when the battery 5 is transported to the loading station, the lifting shaft 121 of the divider 12 rises and lifts the battery 5 at the loading station to the first fixture 602, and the first fixture 602 feeds the battery 5 to the rotation starting point 3.

[0089] Further, the conveyor belt 11 includes two side edges, and the inner sides of the two side edges are opposite to form a chute 111. A cup holder 112 is adapted to the chute 111. The battery 5 is placed on the conveyor belt 11 through the cup holder 112, and a protrusion is arranged at the bottom of the cup holder 112 and is adapted to the chute 111, so that the cup holder 112 can move along the conveyor belt 11. The divider 12 is a common divider device on the market that can be set to rise regularly. The lifting shaft 121 of the divider 12 can pass through the chute 111 to lift the cup holder 112 on the chute 111. During operation, the lifting interval of the lifting shaft 121 lifts the battery 5 at the loading station, and the first fixture 602 can quickly clamp it, effectively avoiding the inconvenience of the first fixture 602 quickly moving the battery 5 due to the overcrowding of the batteries 5 on the conveyor belt 11.

[0090] In this embodiment, as Figure 4 shown in FIG., the first battery cell polarity detection component 71 and the second battery cell polarity detection component 72 include:

[0091] A bracket 701, on which a second cylinder is arranged. The telescopic rod of the second cylinder is connected with a battery cell probe 703, and the battery cell probe 703 points to the battery 5 on the turntable 1.

[0092] Specifically, with the support of the bracket 701, the telescopic head of the second cylinder faces downward, and the battery cell probe 703 is arranged at the end of the telescopic head of the second cylinder. By driving the battery cell probe 703 with the second cylinder, the battery cell probe 703 can be moved closer to or farther away from the battery 5 on the turntable 1.

[0093] During use, when the turntable 1 rotates the battery 5 to the position of the battery cell probe 703, the second cylinder drives the battery cell probe 703 to press against the inner core 704 of the battery, and the battery cell probe 703 detects whether there is a battery cell 705 in the inner core 704 of the battery. Among them, the battery cell probe 703 senses the presence or absence of the battery cell 705 by detecting whether the battery cell 705 is a metal conductor.

[0094] Exemplarily, the battery 5 stands upright on the turntable 1, and the battery cell probe 703 quickly presses downward to test whether the battery cell 705 exists.

[0095] In this embodiment, as Figure 7 shown, the first battery flipping assembly 81 and the second battery flipping assembly 82 include:

[0096] A frame 801 that moves closer to or farther away from the turntable 1 along the slide rail;

[0097] A rotating shaft 802, one end of which is installed on the frame 801, and the other end is provided with a second fixture 803. When the turntable 1 rotates the battery 5 to the second fixture 803, the frame 801 drives the second fixture 803 to move and clamp the battery 5 on the turntable 1, and the rotating shaft 802 drives the second fixture 803 holding the battery 5 to flip, so that the battery 5 flips.

[0098] During use, the frame 801 drives the second fixture 803 to move closer to the turntable 1 along the slide rail. At this time, the second fixture 803 clamps the battery 5 on the turntable 1. Subsequently, the frame 801 drives the second fixture 803 holding the battery 5 to move backward (i.e., the second fixture 803 moves away from the turntable 1), and the rotating shaft 802 drives the second fixture 803 to flip, driving the battery 5 on the second fixture 803 to flip. After the battery 5 flips, the frame 801 drives the second fixture 803 to move closer to the turntable 1, and the second fixture 803 places the flipped battery 5 back onto the turntable 1.

[0099] Among them, the rotating shaft 802 is driven to rotate by a driving component. The rotation driving component includes a first gear 804 and a second gear 805. Both the first gear 804 and the second gear 805 are arranged on the frame 801. The outer end of the rotating shaft 802 is arranged on the second gear 805. The first gear 804 meshes with the second gear 805, and the first gear 804 is connected to a motor.

[0100] In use, the motor drives the first gear 804 to rotate. The first and second gears 805 mesh with each other, thereby driving the rotation of the rotating shaft 802 on the second gear 805. Moreover, the diameter of the first gear 804 is larger than that of the second gear 805. The large-diameter gear exerts a lever effect on the small-diameter gear, increasing the rotation speed of the rotating shaft 802 and achieving the effect of reducing energy consumption.

[0101] The second fixture 803 includes pressing plates arranged oppositely up and down. The two pressing plates are driven by a cylinder to approach or move away from each other. Among them, positioning grooves 808 are formed on the pressing plates. The positioning grooves 808 are adapted to the ends of the battery 5 and are used to position the battery 5.

[0102] In this embodiment, as Figure 5 shown, the laser welding assembly 9 includes:

[0103] A laser 901, which points to the battery 5 on the turntable 1 and is used for laser welding the battery terminal post 902;

[0104] The laser 901 provides laser welding to weld the terminal post to the end cover of the battery 5.

[0105] A positioning sleeve 903, which is connected with a nitrogen nozzle 904 and a dust suction hood 905. When laser welding the battery terminal post 902, the positioning sleeve 903 moves and surrounds the outer periphery of the end of the battery 5 where the battery terminal post 902 is located.

[0106] The positioning sleeve 903 positions and shields the outer periphery of the end of the battery 5, making the laser energy concentrate on the outer periphery of the end of the battery 5. Moreover, in this application, the nitrogen nozzle 904 and the dust suction hood 905 are installed by means of the positioning sleeve 903, realizing the timely replenishment of nitrogen and suction of dust in the narrow space of laser welding, ensuring accurate laser welding and avoiding the influence of air dust and oxygen on the welding effect.

[0107] In this embodiment, as Figures 10 - 11 shown, the laser welding assembly 9 further includes a fixing frame 906,

[0108] The laser 901 is arranged on the top of the fixing frame 906. A vertical guide rail 907 is provided below the laser 901. The positioning sleeve 903 is arranged on the guide rail 907, and the positioning sleeve 903 moves along the guide rail to ring or disengage from the outer periphery of the end of the battery 5.

[0109] The fixing bracket 906 is used to install the laser 901, and the guide rail 907 facilitates the movement of the positioning sleeve 903 to the outer periphery of the end of the battery 5, realizing automatic movement. And. Exemplarily, the guide rail 907 is erected, and the battery 5 is also erected. The positioning sleeve 903 moves along the guide rail 907 in the vertical direction, so that the positioning sleeve 903 can directly sleeve on the end of the battery 5 or directly disengage from the end of the battery 5.

[0110] Further, a jacking push rod 14 is further provided at the bottom of the turntable 1. The jacking push rod 14 can simultaneously jack up the battery 5 that reaches the laser welding station, so as to supply the welding mechanism for welding. The specific structure of the jacking push rod 14: a cylinder provided below the turntable 1, the cylinder is connected with the push rod 14, and at the same time, the turntable 1 is provided with a positioning port for the push rod 14 to extend out. Among them, the battery 5 is positioned on the positioning port, and the cylinder drives the push rod 14 to make the battery 5 on the positioning port rise, so that the battery 5 rises, facilitating the laser 901 to perform laser welding.

[0111] In this embodiment, as Figure 12 shown, it further includes a tensile test assembly 15 for the filling tightness of the battery inner core 704. The tensile test assembly 15 includes:

[0112] a lifting assembly. A suction cup 151 is provided at the top of the lifting assembly. The lifting assembly drives the suction cup 151 to approach or move away from the top of the battery 5. The suction cup 151 tests the filling tightness of the battery inner core 704 filled in the battery 5 by sucking the battery inner core 704.

[0113] It is necessary to detect the tightness of the entire battery 5, otherwise problems are likely to occur in the battery 5. For this reason, after the battery 5 is output, it is also necessary to detect the filling tightness of the battery inner core 704. Among them, the tensile test assembly 15 sucks the battery inner core 704 through the suction force of the suction cup 151 to realize the test of the filling tightness of the battery inner core 704.

[0114] Further, the lifting assembly includes a support frame 152. The suction cup 151 is provided at the top of the support frame 152, and the suction cup 151 is fixedly directed downward. The lifting assembly further includes a lifting rod 153. The lifting rod 153 is connected with a clamping claw 154. The lifting rod 153 drives the clamping claw 154 to clamp the battery 5 and then lift the battery 5 to the suction cup 151, and the suction cup 151 sucks the battery inner core 704.

[0115] Further, a plurality of laser welding assemblies 9 are provided on the turntable 1. Since the welding process of the laser welding assembly 9 is relatively slow, setting a plurality of laser welding assemblies 9 can synchronously weld multiple groups of batteries 5 without slowing down the operation speed of other workstations. Therefore, it is beneficial to improve the detection efficiency.

[0116] Embodiment 2

[0117] This embodiment discloses a welding method for the turntable 1 type power battery pole column 902 welding device described in Embodiment 1. As Figures 1 - 12 shown, a number of C-shaped positioning ports 16 are provided along the edge of the turntable 1. The number of C-shaped positioning ports 16 positions the battery 5 in the vertical direction at each process. The turntable 1 drives the rotation of each C-shaped positioning port 16 through rotation. On the one hand, the C-shaped positioning port 16 can facilitate the positioning of the battery 5 on the turntable 1, enabling the battery 5 to stand as upright as possible on the turntable 1, facilitating processing of it at each process. On the other hand, the C-shaped positioning port 16 has a notch located at the edge of the turntable 1, facilitating the removal of the battery 5 from the notch of the C-shaped positioning port 16. When necessary, additional processing outside the turntable 1 can be achieved.

[0118] The welding method includes the following steps:

[0119] Step 1: The loading and unloading mechanism 61 loads the battery 5 on the conveyor belt 11 onto the C-shaped positioning port 16 of the turntable 1, with the battery inner core 704 of the battery 5 facing upward. The turntable 1 rotates and transfers the battery 5 to the station where the first battery core polarity detection component 71 is located. The first battery core polarity detection component 71 detects whether there is a battery core 705 in the battery inner core 704.

[0120] The above-mentioned loading and unloading mechanism 61 is used for loading and unloading. Here, the loading and unloading mechanism 61 is used to load the battery 5 onto the turntable 1. Among them, the loaded battery 5 stands upright with the battery core 705 facing upward, facilitating the first battery core polarity detection component 71 to directly detect the upward-facing battery core 705 for convenient detection.

[0121] Step 2: The turntable 1 rotates and transfers the battery 5 to the station where the first battery flipping component 81 is located. The first battery flipping component 81 flips the battery 5 so that the end provided with the pole column faces upward.

[0122] Since it is necessary to detect the battery core 705 in the front, however, the end where the battery core 705 is located is not the position where the pole column is provided. Therefore, it is necessary to use the first battery flipping component 81 to flip the battery 5 so that the end provided with the pole column faces upward, which facilitates subsequent direct pole column welding of the end provided with the pole column.

[0123] Step 3: The turntable 1 rotates and transfers the battery 5 to the station where the laser welding component 9 is located. The laser welding component 9 welds the battery pole column 902.

[0124] The laser welding component 9 provides laser energy to weld the pole column.

[0125] Step 4: The turntable 1 rotates to transfer the battery 5 to the station where the external battery welding appearance detection component 10 is located. The external battery welding appearance detection component 10 observes the welded battery terminal 902 to judge the welding effect. If the welding is defective, it is recorded as a defective welded product.

[0126] The main function of the external battery welding appearance detection component 10 is to detect the appearance of the battery terminal 902 and visually observe whether the welding appearance meets the requirements. Among them, when the welding is defective, it is recorded. Subsequently, if such a defective battery 5 is read, the battery 5 is removed. Regarding the method of recording defective batteries 5, specifically: a QR code is set on the battery 5. When it is detected that the battery 5 is a defective welded product, the QR code of the defective product battery 5 is read to learn that the battery 5 is a defective product, and then the defective product battery 5 is screened out.

[0127] Step 5: The turntable 1 rotates to transfer the battery 5 to the station where the second battery flipping component 82 is located. The second battery flipping component 82 flips the welded battery 5 to make the battery inner core 704 face upward.

[0128] For the battery 5 after welding the terminal and detecting the welding effect, to ensure the stability of the battery core 705 of the battery 5, the battery 5 is flipped again by the second battery flipping component 82, so that the battery core 705 of the battery 5 faces upward again, thereby detecting again whether the battery core 705 exists, avoiding the problem that the battery core 705 falls off downward during the terminal welding of the battery 5, and ensuring the quality of the battery 5. At the same time, it also makes the end of the battery 5 without an end cap face upward and the end with the battery terminal 902 face downward, avoiding the battery 5 from falling downward and facilitating the subsequent processing of the battery 5.

[0129] Step 6: The turntable 1 rotates to transfer the battery 5 to the station where the second battery core polarity detection component 72 is located. The second battery core polarity detection component 72 detects again whether the battery inner core 704 has a battery core 705, and the loading and unloading mechanism 61 unloads the detected battery 5 onto the conveyor belt 11.

[0130] After the battery 5 is flipped, it can be further detected whether the battery core 705 exists in the battery 5.

[0131] Regarding the above detection steps, for products with a defective detection result, the corresponding detection tools will record them as defective products and remove the defective products output subsequently.

[0132] In this embodiment, in Step 1 and Step 6, the first battery core polarity detection component 71 and the second battery core polarity detection component 72 press the battery core probe 703 against the battery inner core 704 to sense whether the battery inner core 704 is provided with a battery core 705.

[0133] Since the material of the battery cell 705 is a metal conductor, the battery cell probe 703 can detect whether there is a battery cell 705 in the battery inner core 704 by detecting whether there is a metal conductor on the end face of the battery inner core 704.

[0134] In Step 2 and Step 5, the first battery flipping assembly 81 and the second battery flipping assembly 82 drive the second fixture 803 to approach the turntable 1 along the slide rail through the frame 801. The second fixture 803 clamps the battery 5 on the turntable 1. Subsequently, the frame 801 drives the second fixture 803 with the clamped battery 5 to move backward, drives the second fixture 803 to flip through the rotating shaft 802, and drives the battery 5 on the second fixture 803 to flip. After the battery 5 flips, the frame 801 drives the second fixture 803 to approach the turntable 1, and the second fixture 803 places the flipped battery 5 back onto the turntable 1;

[0135] Since the frame 801 is arranged on the slide rail, the frame 801 can be moved closer to or away from the turntable 1 by moving the frame 801 on the slide rail. And since the second fixture 803 is connected to the frame 801 through the rotating shaft 802, therefore, moving the frame 801 moves the second fixture 803, making the second fixture 803 approach the battery 5 on the turntable 1. The second fixture 803 clamps the battery 5 on the turntable 1. After clamping the battery 5, the battery 5 is taken out from the notch of the C-shaped positioning port 16, so that the battery 5 is flipped outside the turntable 1. After flipping, the frame 801 drives the second fixture 803 to approach the turntable 1 again, and the second fixture 803 places the battery 5 on the turntable 1, realizing the flipping of the battery 5 on the turntable 1, so as to weld the pole column end facing upward after flipping.

[0136] In Step 3, when welding the battery pole column 902, the positioning sleeve 903 is sleeved around the outer periphery of the end of the battery 5 where the battery pole column 902 is located. During the laser welding process, the nitrogen nozzle 904 on the positioning sleeve 903 adds nitrogen protection to the end of the battery pole column 902 and the dust suction hood 905 on the positioning sleeve 903 performs dust suction treatment;

[0137] By moving the positioning sleeve 903, the positioning sleeve 903 can be sleeved around the outer periphery of the end of the battery 5. In actual operation, by arranging the positioning sleeve 903 on the guide rail 907, the positioning sleeve 903 can be moved along the guide rail 907 to be sleeved on or away from the end of the battery 5. Subsequently, the nitrogen and the dust suction hood 905 on the positioning sleeve 903 are processed during laser welding. The nitrogen plays a role of protecting and isolating to remove oxygen, and the dust suction hood 905 efficiently sucks the dust generated during the laser welding process to ensure the welding effect.

[0138] In Step 4, the external welding appearance detection assembly 10 of the battery detects the appearance state of the battery 5 through visual scanning.

[0139] The appearance detection component quickly detects the appearance state of the battery 5 through visual effects. The visual detection effect is fast, effectively ensuring the detection effect.

[0140] In the description of this application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of this application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0141] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above-mentioned" can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will then be positioned as "below other devices or structures" or "beneath other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0142] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without separate declarations, the above words have no special meanings. Therefore, it should not be construed as a limitation on the protection scope of this application.

[0143] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding method for a rotary power battery pole welding device, characterized in that, The rotary power battery pole welding device includes a turntable that rotates around its axis. The rotation direction of the turntable has a rotation starting point and a rotation ending point. The rotation starting point is the loading position of the turntable, and the rotation ending point is the unloading position of the turntable. A processing mechanism, the processing mechanism includes: a loading and unloading mechanism, a first battery polarity detection component, a first battery flipping component, a laser welding component, a battery welding appearance detection component, a second battery flipping component, and a second battery polarity detection component arranged in sequence along the direction from the rotation starting point to the rotation ending point of the turntable outside the turntable. The first battery flipping component and the second battery flipping component include: A frame that moves closer to or away from the turntable along the slide rail. A rotating shaft, one end of the rotating shaft is installed on the frame, and the other end is provided with a second fixture. When the turntable drives the battery to the second fixture, the frame drives the second fixture to move and clamp the battery on the turntable, and the rotating shaft drives the second fixture clamping the battery to flip, so that the battery flips. A number of C-shaped positioning ports are opened along the edge of the turntable. The number of C-shaped positioning ports positions the batteries in each process in the vertical direction. The turntable drives the rotation of each C-shaped positioning port through rotation. The welding method includes the following steps: Step 1: The loading and unloading mechanism loads the battery on the conveyor belt into the C-shaped positioning port of the turntable, making the battery inner core face upward. The turntable rotates and makes the battery flow to the station where the first battery polarity detection component is located. The first battery polarity detection component detects whether there is a battery core in the battery inner core. Step 2: The turntable rotates and makes the battery flow to the station where the first battery flipping component is located. The first battery flipping component flips the battery so that the end provided with the pole column faces upward. Step 3: The turntable rotates and makes the battery flow to the station where the laser welding component is located. The laser welding component welds the battery pole column. Step 4: The turntable rotates and makes the battery flow to the station where the battery outer welding appearance detection component is located. The battery outer welding appearance detection component observes the welded battery pole column to judge the welding effect. If the welding is poor, it is recorded as a defective product. Step 5: The turntable rotates and makes the battery flow to the station where the second battery flipping component is located. The second battery flipping component flips the welded battery so that the battery inner core faces upward. Step 6: The turntable rotates and makes the battery flow to the station where the second battery polarity detection component is located. The second battery polarity detection component detects again whether there is a battery core in the battery inner core. The loading and unloading mechanism unloads the detected battery to the conveyor belt. In Step 1 and Step 6, the first battery polarity detection component and the second battery polarity detection component press the battery core probe against the battery inner core to sense whether there is a battery core in the battery inner core. In Step 2 and Step 5, the first battery flipping assembly and the second battery flipping assembly drive the second fixture to approach the turntable along the slide rail through the rack. The second fixture clamps the battery on the turntable. Subsequently, the rack drives the second fixture with the clamped battery to move backward, drives the second fixture to flip through the rotating shaft, drives the battery on the second fixture to flip. After the battery flips, the rack drives the second fixture to approach the turntable, and the second fixture places the flipped battery back onto the turntable; In Step 3, when welding the battery pole column, the positioning collar is sleeved on the outer periphery of the end of the battery where the battery pole column is located, so that during the laser welding process, the nitrogen nozzle on the positioning sleeve applies nitrogen protection to the end of the battery pole column and the dust suction hood on the positioning sleeve performs dust suction treatment; In Step 4, the battery external welding appearance detection assembly detects the battery appearance state through visual scanning.

2. The welding method of the rotary power battery pole welding device according to claim 1, characterized in that The turntable is arranged on one side of the conveyor belt. The conveyor belt is used to convey the battery, and the loading and unloading mechanism is arranged at the position between the conveyor belt and the turntable; The loading and unloading mechanism includes: a rotating frame. The rotating frame is provided with a rotating plate. The rotating plate hangs at least two groups of first fixtures. At least two groups of first fixtures are arranged on the opposite sides of the rotating plate; The rotating frame drives one group of its first fixtures to clamp the battery on the conveyor belt and load it to the rotation starting point through rotation, and at the same time drives the other group of first fixtures to clamp the battery at the rotation ending point and unload it to the conveyor belt.

3. The welding method of the rotary power battery pole welding device according to claim 2, characterized in that, The conveyor belt is provided with a loading station. A divider is arranged below the loading station. When the battery is conveyed to the loading station, the lifting shaft of the divider rises and lifts the battery on the loading station to the first fixture, and the first fixture loads the battery to the rotation starting point.

4. The welding method of the rotary power battery pole column welding device according to claim 1, wherein The first battery core polarity detection assembly and the second battery core polarity detection assembly include: A bracket. A second cylinder is arranged on the bracket. The telescopic rod of the second cylinder is connected with a battery core probe, and the battery core probe points to the battery on the turntable. When the turntable drives the battery to the position of the battery core probe, the second cylinder drives the battery core probe to press against the inner core of the battery, and the battery core probe detects whether there is a battery core in the inner core of the battery.

5. The welding method of the rotary power battery pole column welding device according to claim 1, characterized in that, The laser welding assembly includes: A laser. The laser points to the battery on the turntable. The laser is used for laser welding the battery pole column; A positioning sleeve. The positioning sleeve is connected with a nitrogen nozzle and a dust suction hood. When laser welding the battery pole column, the positioning sleeve moves and surrounds the outer periphery of the end of the battery where the battery pole column is located.

6. The welding method of the rotary power battery pole welding device according to claim 5, characterized in that, The laser welding assembly further includes a fixing frame. The laser is arranged on the top of the fixing frame. A vertical guide rail is arranged below the laser. The positioning sleeve is arranged on the guide rail, and the positioning sleeve moves along the guide rail to surround or disengage from the outer periphery of the battery end.

7. The welding method of the rotary power battery pole welding device according to claim 1, characterized in that, It further includes a tensile test assembly for the filling tightness of the battery inner core. The tensile test assembly includes: Lifting assembly, a suction cup is provided at the top of the lifting assembly, the lifting assembly drives the suction cup to approach or move away from the top of the battery, and the suction cup tests the tightness of the battery core filled in the battery case by sucking the battery core.

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