Battery overturning and discharging system and method

Abstract

The invention relates to the technical field of hard-shell battery transfer equipment, in particular to a battery overturning and discharging system and method.The system comprises an overturning unit and a vertical clamping jaw, the overturning unit is arranged at a discharging station and used for receiving and clamping a plurality of horizontally-arranged batteries, and the batteries are integrally overturned to be in a vertical state through a rotating mechanism; and the vertical clamping jaw is arranged between the overturning unit and the material frame placing position and is used for clamping the battery in a vertical state from the overturning unit and vertically placing the battery into the material frame. The battery is placed in the turnover unit, the posture of the battery is changed through the turnover unit, and the risk that the battery falls off in the moving process is reduced; and meanwhile, the action that the batteries are vertically placed into the material frame can be completed only through translation and vertical clamping of the subsequent vertical clamping jaw, a mechanical arm does not need to conduct complicated angle overturning and other changes, the battery discharging speed is increased, and meanwhile high-density, lossless and efficient placement of the batteries in the material frame is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hard-shell battery transfer equipment, and specifically provides a battery overturning and discharging system and method. BACKGROUND

[0002] In the automatic manufacturing line of square aluminum shell and steel shell batteries, the batteries that have completed the air tightness detection need to be quickly and reliably transferred to a designated material frame (or turnover box) for storage. The efficiency and safety of this process directly affect the production rhythm of the entire line and the quality of the battery products.

[0003] Currently, the detected batteries are horizontally placed on a transfer tray at a discharging station, and a suction cup clamp is generally used as an end effector for the battery handling process. During operation, the robot controls the suction cup to directly adsorb the flat shell surface of the battery, sucks the battery from the horizontal tray at the detection station, and then places it in the material frame.

[0004] In the prior art, the robot drives the suction cup to handle the battery, and to place the battery in the designated position in the material frame, a complicated angle overturning process is required, which not only reduces the transfer efficiency, but also easily causes placement errors, and further causes scratching or collision when the battery is placed in the material frame.

[0005] Therefore, the existing handling method is difficult to be used in modern battery production environments with large-scale and high efficiency requirements. Therefore, there is an urgent need for a new battery discharging method and system. SUMMARY

[0006] To solve the above problems, the present application provides a new battery discharging method and system to ensure the battery discharging rate and placement accuracy, and to ensure the subsequent quality of the battery.

[0007] The technical scheme of the present application is as follows:

[0008] A battery overturning and discharging system includes an overturning unit and a vertical clamp jaw. The overturning unit is arranged at a discharging station and is used to receive and clamp a plurality of horizontally placed batteries, and to overturn the batteries as a whole to a vertical state through a rotating mechanism. The vertical clamp jaw is arranged between the overturning unit and a material frame placement position, and is used to clamp the battery in the vertical state from the overturning unit and vertically place it in the material frame.

[0009] In this scheme, the qualified battery is directly placed in the turnover unit, and the battery posture is changed through the turnover unit. In this process, the risk of falling during the movement of the battery is reduced, and through active turning, the battery posture is quickly and efficiently changed. The subsequent vertical clamping jaw can complete the vertical placement of the battery into the material frame through translation and vertical clamping, without the need for a complicated angle turning change by a mechanical hand, effectively improving the battery unloading rate, and realizing high-density and lossless stacking of the battery in the material frame, thereby improving the single loading capacity and material frame loading efficiency.

[0010] Preferably, the turnover unit comprises a rack, a rotating shaft driven by a motor is horizontally arranged on the rack, a turnover placement table is fixedly arranged on the rotating shaft, a row of battery placement positions are arranged on the turnover placement table, the turnover placement table comprises a horizontal position and a vertical position, and the motor drives the rotating shaft to rotate and drive the turnover placement table to switch between the horizontal position and the vertical position. The motor drives the rotating shaft to rotate and drive the entire turnover placement table to rotate, thereby realizing synchronous and stable turning of a row of batteries. Meanwhile, the plurality of battery placement positions can correspond to the position of the front transfer tray, so that the turnover unit can adapt to the battery carrying equipment at the front end, and the turnover unit can complete the placement of a plurality of batteries at the unloading station at one time, thereby improving the unloading rate of the battery.

[0011] Preferably, a plurality of positioning bases are arranged on the turnover placement table, a placement groove is arranged on the positioning base, the positioning base is detachably installed on the turnover placement table, the placement groove forms the battery placement position, the placement groove comprises a straight groove corner adapted to the shape of the battery, a suction cup port is arranged in the positioning base groove, and the suction cup port is connected to a negative pressure cylinder on the turnover placement table.

[0012] In this scheme, the placement groove and the straight groove corner of the positioning base provide initial positioning, and negative pressure adsorption ensures the stability of the battery during turning. Meanwhile, the detachable positioning base design enables the system to quickly change specifications and adapt to various battery specifications, thereby improving the versatility of the equipment.

[0013] In order to facilitate the vertical clamping jaw to clamp a single battery, a clamping notch is arranged on the positioning base, a notch adapted to the clamping notch is arranged on the turnover placement table, and when the turnover placement table is in the vertical position, the clamping notch is vertically upward, so that the clamping arm of the vertical clamping jaw can extend into the clamping notch to clamp the battery.

[0014] To prevent the batteries from being gripped differently by the vertical grippers and thus scratched or damaged when placed in the material box, the flipping placement platform is also equipped with a repositioning mechanism. The repositioning mechanism includes two pushers with mutually perpendicular pushing directions. Each battery placement position corresponds to one set of repositioning mechanisms. The pushers are pushed by a pusher cylinder located on the lower surface of the flipping placement platform. The placement groove includes a straight groove angle adapted to the shape of the battery. The pushers are used to push the battery placed in the placement groove to abut against the straight groove angle.

[0015] In this solution, since the pusher is a movable part, the size of the placement groove can be finely adjusted by the initial position of the two pushers. This allows the same positioning base to accommodate batteries of similar model and size. At the same time, the two vertical pushers push the battery to a fixed straight groove angle, eliminating battery posture and position errors, ensuring that the battery position is absolutely consistent each time it is gripped, and guaranteeing the accuracy of the subsequent vertical gripper gripping the battery and placing it into the material box.

[0016] Preferably, the pushing component includes a vertical push plate and a buffer block connected to the pushing cylinder. A horizontal push block is provided on the top of the vertical push plate, which is used to abut against the side wall of the battery. A sliding groove is provided on the buffer block. The bottom of the vertical push plate is slidably disposed in the sliding groove by a guide pin. The sliding direction of the vertical push plate is the same as its pushing direction. A buffer spring is provided between the vertical push plate and the sliding groove.

[0017] In this design, the punch block, sliding groove, and buffer spring constitute a buffer mechanism, which makes the pusher make a flexible "soft contact" when it contacts and pushes the battery. This effectively avoids scratching the battery surface and absorbs the impact when positioning is terminated, thus protecting the battery product.

[0018] Preferably, the frame is provided with two vertical plates, and the two ends of the rotating shaft are rotatably mounted on the two plates through bearings. A photoelectric sensor is provided on one side of the plate along the axis of the rotating shaft, and a trigger plate extends radially outward from the rotating shaft. The trigger plate can rotate with the rotating shaft to two angles corresponding to the horizontal and vertical positions respectively, and trigger the corresponding photoelectric sensor.

[0019] In this scheme, the combination of the trigger plate and the photoelectric sensor provides the control system with a precise position signal indicating whether the flipping is in place, ensuring the repeatability of the flipping action and the reliability of the system operation.

[0020] Preferably, the positioning base is further provided with a positioning indication mechanism. The positioning indication mechanism includes a mounting box fixed to the flipping placement platform, and an elastic contact and a stationary contact disposed in the mounting box. The elastic contact has a trigger end that extends to the inside of a right-angled side of the straight groove in the placement groove. When the battery is pushed by the repositioning mechanism and its side wall abuts against the right-angled side, the battery presses against the trigger end, causing the elastic contact to undergo elastic deformation and contact the stationary contact, thereby generating an electrical signal indicating that the battery has been positioned.

[0021] In this solution, the mechanism consisting of the elastic contact piece and the stationary contact point generates physical contact and sends an electrical signal the instant the battery is pressed against the right-angled edge. This provides the system with deterministic feedback that the battery has been precisely positioned, thus avoiding clamping or placement failures caused by positioning failure.

[0022] Preferably, the flip-top platform is provided with a through-beam light curtain, with the transmitting end and receiving end of the through-beam light curtain respectively located on both sides of the flip-top platform.

[0023] In this solution, the through-beam light curtain can detect whether the battery is placed flat on the positioning base, thus avoiding subsequent repositioning failures and the battery falling off when flipping the battery.

[0024] A battery flipping and unloading method using the system described above includes the following steps:

[0025] S1, rough placement, the batteries that have passed the airtightness test are horizontally placed into the positioning base in the flipping unit located at the unloading station and in a horizontal position;

[0026] S2, precise positioning, the pusher pushes the battery so that the battery abuts against the straight groove corner on the positioning base;

[0027] S3, adsorption and flipping: the suction cup opening generates negative pressure to adsorb the battery, and the motor drives the flipping placement platform to a vertical position.

[0028] S4, clamping and placing: the vertical gripper arms extend vertically downwards into the clamping notch to clamp the battery, and the suction cup opening stops negative pressure adsorption after clamping.

[0029] By integrating the four steps of roughing, precise positioning, adsorption and flipping, and clamping and placing, hardware innovation is solidified into the optimal work process, ensuring efficient, damage-free and automated operation from the completion of inspection to packing and stacking.

[0030] The beneficial effects of this invention are:

[0031] This invention incorporates a flipping unit, allowing batteries to be placed within it. By changing the battery's orientation through the flipping unit, the battery's fall can be effectively prevented. After the flipping unit changes the battery's orientation, the subsequent vertical grippers can complete the vertical placement of the battery into the material frame simply by translating and vertically clamping it, eliminating the need for complex angle flipping and other changes by the robotic arm. This increases the battery unloading rate while achieving high-density, damage-free stacking of batteries within the material frame, thereby improving the single loading capacity and the material frame loading efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a three-dimensional schematic diagram of the flipping unit of the present invention;

[0034] Figure 2 This is a three-dimensional schematic diagram of the flip-up placement platform of the present invention;

[0035] Figure 3 This is a three-dimensional schematic diagram of the pusher of the present invention;

[0036] Figure 4 This is a schematic diagram of the motor and shaft of the present invention;

[0037] Figure 5 This is a schematic diagram of the aiming and prompting mechanism of the present invention.

[0038] In the above figures, the corresponding reference numerals are as follows:

[0039] 1-Flipping unit, 11-Frame, 12-Motor, 13-Rotating shaft, 131-Trigger plate, 132-First photoelectric sensor, 133-Second photoelectric sensor, 14-Flipping placement platform, 15-Positioning base, 151-Placement groove, 1511-Straight groove angle, 152-Suction cup opening, 153-Clamping notch, 16-Alignment indicator mechanism, 161-Mounting box, 162-Elastic contact plate, 1621-Trigger end, 163-Static contact point, 17-Through-beam light curtain, 18-Pushing component, 181-Buffer block, 182-Vertical push plate, 183-Horizontal push block, 184-Guide pin, 185-Buffer spring, 186-Pushing cylinder, 2-Battery. Detailed Implementation

[0040] The technical solution of the present invention will be clearly and completely described in conjunction with the accompanying drawings and through specific implementation methods of the embodiments of the present invention.

[0041] Example 1:

[0042] like Figure 1 As shown, this embodiment provides a battery 2 flipping and unloading system. The system mainly includes a flipping unit 1 and vertical grippers, and the entire system is coordinated and controlled by a central controller. The flipping unit 1 is installed at the unloading station of the airtightness testing production line, used to receive and clamp multiple batteries 2 that have passed the airtightness test. The flipping unit 1 includes a frame 11, on which a rotating shaft 13 driven by a motor 12 (a servo motor) is horizontally mounted. A flipping placement table 14 is fixedly mounted on the rotating shaft 13. Multiple battery 2 placement positions are arranged along the length of the flipping placement table 14. The number and spacing of these battery 2 placement positions are adapted to the number and spacing of batteries 2 transferred at one time by the transfer tool in the front-end airtightness testing production line, thereby realizing the simultaneous reception and processing of multiple batteries 2. Of course, a flipping unit can contain multiple sets of rotating shafts 13 and placement tables.

[0043] Specifically, the flipping placement table 14 has two key stations: a horizontal receiving position and a vertical picking position. The motor 12 drives the rotating shaft 13 to rotate in both directions, enabling the flipping placement table 14 to precisely switch between the horizontal receiving position and the vertical picking position. The vertical gripper is installed in the space above the flipping unit 1 and the material frame placement position via a multi-axis linear module. The gripper arm can move vertically and horizontally, and its end is designed with a gripping surface adapted to the shape of the battery 2. Its movement trajectory is planned by the central controller, requiring only simple lifting, translation, and lowering to complete the picking and placing of materials, avoiding complex angle changes, thereby significantly improving the efficiency and reliability of single handling.

[0044] At the same time, such as Figure 2 As shown, multiple positioning bases 15 are detachably mounted on the flipping placement table 14 via bolts. This design allows for quick replacement of positioning bases 15 to accommodate different battery models 2, improving the flexibility of the production line. Each positioning base 15 has a placement groove 151, with a straight groove angle 1511 machined on its inner side to match the shape of the battery 2, providing initial lateral positioning for the battery 2. A suction cup port 152 is opened at the bottom of the groove, connected via a pipe to a negative pressure cylinder installed inside the flipping placement table 14. When flipping is required, the central controller issues a command to activate the negative pressure, firmly adhering the battery 2 to the positioning base 15, completely eliminating the risk of the battery 2 falling off during the flipping process.

[0045] Example 2:

[0046] Based on the above embodiments, in order to accurately determine the flipped-in state, such as Figure 4As shown, multiple photoelectric sensors are installed on the frame 11. In this embodiment, two photoelectric sensors are preferably set: the first photoelectric sensor 132 corresponds to the horizontal position, and the second photoelectric sensor 133 corresponds to the vertical position. A trigger plate 131 is fixed on the rotating shaft 13. When the flipping placement table 14 rotates to the target position, the trigger plate 131 will block the beam of the corresponding photoelectric sensor, and the sensor will then send a high-level signal to the central controller. The central controller will only allow the execution of subsequent processes after receiving the correct positioning signal, ensuring the absolute safety and accuracy of the operation.

[0047] Furthermore, to ensure the accuracy of the tilting angle of the tilting table, when the motor 12 drives the tilting and placement table 14 to rotate to the vertical picking position, its stopping angle is slightly more than 90°, preferably 100°. This design causes the battery 2 to tilt slightly backward in the vertical position, with its center of gravity closer to the gripper side, making it easier for the gripper to extend and pick up the battery and making it easier to remove the battery, thus avoiding interference with the positioning base 15. During this process, the precise angle is confirmed by both the encoder of the motor 12 and the second photoelectric sensor 133.

[0048] Example 3:

[0049] In this embodiment, to ensure that each battery 2 is in a completely consistent position before being flipped, so that the vertical gripper can accurately grasp it and avoid scratches or bumps to the batteries 2 due to positional errors when placing them into the material box. Figure 2 As shown, below the flipping placement platform 14, a repositioning mechanism is provided for each battery 2 placement position. This mechanism includes two pushing cylinders 186 with mutually perpendicular pushing directions and their driving pushing components 18. The end of the pushing component 18 is provided with a horizontal push block 183. After the battery 2 is roughly placed into the placement groove 151, the central controller sequentially activates the two pushing cylinders 186, pushing the battery 2 so that its two adjacent sides are tightly against the straight groove angle 1511, eliminating all positional and orientation deviations. It is worth noting that the pushing component 18 itself is designed with a buffer structure, one specific structure of which is shown below. Figure 3 As shown, the device includes a buffer block 181 connected to a push cylinder 186, and a vertical push plate 182 slidably mounted in the sliding groove of the buffer block 181 via a guide pin 184. Multiple buffer springs 185 are provided between the two. A horizontal push block 183 is connected to the top of the vertical push plate 182. When the push cylinder 186 pushes, the vertical push plate 182 causes the horizontal push block 183 to contact the side wall of the battery 2. If overshoot occurs, the buffer springs 185 are compressed to absorb the impact force, achieving "soft contact" protection for the battery 2 and effectively preventing damage to the battery 2.

[0050] Furthermore, to provide deterministic feedback on the completion of precise positioning to the central controller, a positioning indication mechanism 16 is integrated on each positioning base 15. This mechanism, as... Figure 5As shown, the device includes a mounting box 161, which contains a resilient contact 162 and a stationary contact 163. The trigger end 1621 of the resilient contact 162 extends to the inner side of the straight groove angle 1511. Specifically, in this embodiment, two alignment prompting mechanisms 16 are provided, with the trigger ends 1621 of the two alignment prompting mechanisms 16 respectively positioned on the two right-angled sides inside the straight groove angle 1511. When the repositioning mechanism perfectly pushes the battery 2 into the straight groove angle 1511, the battery 2 will press the trigger end 1621, causing the resilient contact 162 to deform until it contacts the stationary contact 163, thereby conducting the circuit and generating a switching signal transmitted to the central controller. The central controller must receive the "in position" signal sent by all alignment prompting mechanisms 16 before logically interlocking to initiate the next adsorption and flipping command, thus eliminating the possibility of subsequent dangerous operations due to inaccurate positioning of individual batteries 2.

[0051] Example 4:

[0052] To ensure that battery 2 is fully positioned on positioning base 15, such as Figure 1 As shown, a set of through-beam light curtains 17 are installed on both sides of the flip-up placement platform 14. The transmitting and receiving ends of the through-beam light curtains 17 are respectively located on both sides of the flip-up placement platform 14, and the height of their beams is slightly higher than the top surface of the battery 2, preferably 0.5 mm higher. After coarse placement, if a beam is not blocked, the battery 2 is placed in place; after fine positioning, if the beam state is abnormal, it may indicate that the battery 2 is placed tilted, and the central controller can command repositioning or issue an alarm.

[0053] Meanwhile, the bottom of the flipping placement platform 14 is also equipped with multiple reflective photoelectric sensors to detect whether a battery 2 is placed on the corresponding positioning base 15.

[0054] Example 5:

[0055] Based on the above embodiments, this system also includes an airtightness testing device. The airtightness testing device includes an upper testing fixture and a lower sealing platform. The relative positions of the upper testing fixture and the lower sealing platform are controlled by a lifting unit. When the lower surface of the upper testing fixture and the upper surface of the lower sealing platform contact each other, an airtight cavity is formed between them. Multiple sets of batteries 2 are placed on the lower sealing platform. The upper testing fixture is provided with a transfer cavity connected to the airtight cavity, and the transfer cavity is connected to a testing gas pipe. Gas volatilized from battery 2 leakage enters the transfer cavity from the airtight cavity. The testing gas pipe detects the substance content of the gas in the transfer cavity to determine whether the batch of batteries 2 is leaking. After the test is completed, the batteries on the lower sealing platform are transferred to the unloading station using a transfer tool.

[0056] Because the equipment has a fixed detection time for air tightness, when multiple batteries have very small leakage, relying solely on the slight negative pressure in the detection tube may not be enough to absorb a sufficient amount of volatile leakage liquid within the specified time, thus failing to reach the preset leakage threshold and resulting in a misjudgment of air tightness.

[0057] Therefore, in this embodiment, the transfer cavity is a circular cavity, and the detection air pipe is located near the edge of the transfer cavity. A centrifugal fan is installed in the center of the transfer cavity, and the centrifugal fan and its motor 12 are mounted on the detection fixture. The height of the fan blades is adapted to the height of the transfer cavity. During airtightness testing, the rotation of the centrifugal fan allows the gas input into the transfer cavity from each battery 2 to be agitated by the fan blades and mixed and accumulated at the cavity edge. After the gas is agitated, mixed, and accumulated at the cavity edge, the detection air pipe can directly draw away the uniformly mixed gas, thereby improving the detection sensitivity of the equipment.

[0058] Example 6:

[0059] Based on the systems provided in embodiments one to four above, a preferred automated method for battery 2 flipping and unloading includes:

[0060] S1: Coarse placement: The upstream equipment places the qualified battery 2 horizontally into the positioning base 15, which is in the horizontal receiving position.

[0061] In this step, the central controller controls the motor 12 of the flipping unit 1 to drive the flipping placement table 14 to rotate to the horizontal receiving position. The first photoelectric sensor 132, mounted on the frame 11, confirms the correct position, detecting that the battery 2 is horizontally placed on the positioning base 15. The upstream robot (i.e., the transfer tool in the front-end airtightness testing production line) horizontally places multiple qualified batteries 2 into their respective battery 2 placement positions on the flipping placement table 14. The placement groove 151 provides initial positioning for the battery 2.

[0062] S2: Precision Positioning and Confirmation: The central controller activates the repositioning mechanism to push battery 2 and reads the signal from the alignment prompt mechanism 16 in real time. When all workstations return the positioning signal and the through-beam light curtain 17 detects normal operation, proceed to the next step.

[0063] In this step, after receiving the loading completion signal, the central controller starts the repositioning mechanism. The pushing cylinder 186 of this mechanism pushes the pushing component 18, moving the battery 2 towards the fixed right-angle side of the placement groove 151, ensuring that the sidewalls of all batteries 2 are in close contact with the right-angle side, thus eliminating positional errors.

[0064] S3: Adsorption and Tilting: The central controller starts negative pressure adsorption and commands motor 12 to drive the tilting platform 14 to rotate to a slightly over-degree vertical material picking position, which is confirmed by the sensor.

[0065] In this step, the central controller activates the negative pressure system, which uses the suction cup 152 on the positioning base 15 to attach and fix the battery 2. Subsequently, the central controller drives the motor 12 to rotate the tilting platform 14 towards the vertical material handling position. When the second photoelectric sensor 133 (detecting the vertical position) on the frame 11 is triggered by the trigger piece 131 on the rotating shaft 13, the central controller determines that the tilting is in place and stops the motor 12.

[0066] S4: Gripping and Placement: The central controller instructs the vertical gripper to complete the gripping, transfer, and placement actions. After the removal is confirmed by the light curtain, the controller controls the flipping placement stage 14 to reset and start the next cycle.

[0067] In this step, after the battery is flipped into position, the central controller drives the vertical gripper to move directly above the flipping and placing platform 14. The gripper arm descends vertically, extending into the specially designed gripping notch 153 to clamp the battery 2. After the gripper sensor provides a clamping signal, the central controller immediately shuts off the negative pressure adsorption and commands the vertical gripper to lift the battery 2, move it horizontally above the material frame, and then vertically place the battery 2 into the box. After placement, the vertical gripper returns to the standby position, and the central controller drives the flipping and placing platform 14 to flip back to the horizontal receiving position, waiting for the next batch of batteries 2, thus forming a continuous automated operation cycle.

[0068] This embodiment utilizes a continuous process of "horizontal receiving → precise positioning → overall flipping → vertical placement" to process multiple batteries 2 at once using the flipping unit 1, and completes the stacking by performing simple translational movements with vertical grippers. This greatly improves the unloading rate and completely realizes the vertical, high-density, and non-compression stacking of batteries 2 in the material frame, significantly improving loading efficiency and storage space utilization.

[0069] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A battery flipping and unloading system, characterized in that, It includes a flipping unit and a vertical gripper. The flipping unit is located at the unloading station and is used to receive and clamp multiple horizontally placed batteries, and flip them as a whole to a vertical state through a rotating mechanism. The vertical gripper is located between the flipping unit and the material frame placement position and is used to clamp the vertically placed batteries from the flipping unit and vertically place them into the material frame.

2. The battery flipping and unloading system according to claim 1, characterized in that, The flipping unit includes a frame, on which a rotating shaft driven by a motor is horizontally arranged. A flipping placement platform is fixedly arranged on the rotating shaft. The flipping placement platform has a row and multiple battery placement positions, including a horizontal position and a vertical position. The motor drives the rotating shaft to rotate and causes the flipping placement platform to switch between the horizontal position and the vertical position.

3. The battery flipping and unloading system according to claim 2, characterized in that, The flipping placement platform is provided with multiple positioning bases, each with a placement groove. The positioning bases are detachably installed on the flipping placement platform, and the placement grooves form the battery placement positions. Each placement groove includes a straight groove angle adapted to the shape of the battery. A suction cup opening is provided in the positioning base groove, and the suction cup opening is connected to a negative pressure cylinder on the flipping placement platform.

4. The battery flipping and unloading system according to claim 3, characterized in that, The positioning base is provided with a gripping notch, and the flipping placement platform is provided with a notch adapted to the gripping notch. When the flipping placement platform is in the vertical position, the opening of the gripping notch faces vertically upward, allowing the gripping arm of the vertical gripper to extend in and grip the battery.

5. The battery flipping and unloading system according to claim 4, characterized in that, The flipping placement platform is also provided with a repositioning mechanism, which includes two pushers with mutually perpendicular pushing directions. Each battery placement position corresponds to a set of repositioning mechanisms. The pushers are pushed by a pusher cylinder provided on the lower surface of the flipping placement platform. The placement groove includes a straight groove angle adapted to the shape of the battery. The pushers are used to push the battery placed in the placement groove to abut against the straight groove angle.

6. The battery flipping and unloading system according to claim 5, characterized in that, The pushing component includes a vertical push plate and a buffer block connected to the pushing cylinder. A horizontal push block is provided on the top of the vertical push plate, which is used to abut against the side wall of the battery. A sliding groove is provided on the buffer block. The bottom of the vertical push plate is slidably disposed in the sliding groove through a guide pin. The sliding direction of the vertical push plate is the same as its pushing direction. A buffer spring is provided between the vertical push plate and the sliding groove.

7. A battery flipping and unloading system according to claim 2, characterized in that, The frame is provided with two vertical plates. The two ends of the rotating shaft are rotatably mounted on the two plates via bearings. A photoelectric sensor is provided on one side of the plate along the axis of the rotating shaft. A trigger plate extends radially outward from the rotating shaft. The trigger plate can rotate with the rotating shaft to two angles corresponding to the horizontal and vertical positions, respectively, and trigger the corresponding photoelectric sensor.

8. A battery flipping and unloading system according to claim 5, characterized in that, The positioning base is also equipped with a positioning prompting mechanism, which includes a mounting box fixed to the flipping placement platform, and an elastic contact and a stationary contact disposed in the mounting box. The elastic contact has a trigger end that extends to the inside of a right-angled side of the straight groove in the placement groove. When the battery is pushed by the repositioning mechanism and its side wall abuts against the right-angled side, the battery presses against the trigger end, causing the elastic contact to undergo elastic deformation and contact the stationary contact, thereby generating an electrical signal indicating that the battery has been positioned correctly.

9. A battery flipping and unloading system according to claim 5, characterized in that, A beam-beaming light curtain is provided on the flip-top platform, with the transmitting and receiving ends of the light curtain located on both sides of the flip-top platform, respectively.

10. A battery flipping and unloading method using the system described in any one of claims 5 to 9, characterized in that... Includes the following steps: S1, rough placement, the batteries that have passed the airtightness test are horizontally placed into the positioning base in the flipping unit located at the unloading station and in a horizontal position; S2, precise positioning, the pusher pushes the battery so that the battery abuts against the straight groove corner on the positioning base; S3, adsorption and flipping: the suction cup opening generates negative pressure to adsorb the battery, and the motor drives the flipping placement platform to a vertical position. S4, clamping and placing: the vertical gripper arms extend vertically downwards into the clamping notch to clamp the battery, and the suction cup opening stops negative pressure adsorption after clamping.

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