Battery cell anti-falling control circuit and battery cell conveying device

Abstract

The utility model relates to a battery cell anti-falling control circuit and a battery cell conveying device.The circuit comprises a first power module, a battery cell position sensing module and a motor driver, and the input end of the battery cell position sensing module is connected with the first power module; the battery cell position sensing module is used for generating a power-off signal when detecting that the battery cell passes through the discharging end of the conveying belt; the first input end of the motor driver is connected with the output end of the battery cell position sensing module, the output end of the motor driver is connected with the servo motor, and the motor driver is used for generating a braking signal when receiving the power-off signal so as to control the servo motor to stop working. According to the battery cell anti-falling control circuit, when the battery cell is conveyed to the discharging end of the conveying belt, the battery cell position sensing module generates the power-off signal, so that the motor driver generates the braking signal to control the servo motor to stop working, and then the possibility that the battery cell falls off from the discharging end of the conveying belt is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of battery processing technology, and in particular to a cell anti-drop control circuit and a cell transfer device. Background Technology

[0002] When prismatic, pouch, and cylindrical cells are produced automatically on a battery module production line, in order to meet the needs of different workstations, individual cells need to be placed on cell trays on a conveyor belt. The conveyor belt is driven by a motor to move, thereby enabling the cells to move at equal distances. This method has the advantages of simple structure, convenient maintenance, and long transmission distance.

[0003] In related technologies, processing equipment corresponding to each process is sequentially set on both sides of a conveyor belt. The battery cells pass through each station sequentially under the conveyor belt, completing each process. Finally, a robotic arm removes the battery cells from the conveyor belt. However, if the robotic arm malfunctions and fails to remove the processed battery cells from the conveyor belt in time, the cells will continue to move with the belt, posing a risk of falling off the unloading end and causing damage, or even more serious safety hazards. Utility Model Content

[0004] Therefore, it is necessary to provide a battery cell anti-drop control circuit and a battery cell conveying device to address the safety hazard caused by battery cells potentially falling from the unloading end of the conveyor belt.

[0005] In a first aspect, this application provides a battery cell anti-drop control circuit, applicable to a battery cell conveying device. The battery cell conveying device includes a frame, a conveyor belt mounted on the frame, and a servo motor for driving the conveyor belt to rotate. The battery cell anti-drop control circuit includes:

[0006] First power module;

[0007] The cell position sensing module has its input end connected to the first power supply module. The cell position sensing module is used to generate a power-off signal when it detects that the cell has passed the unloading end of the conveyor belt.

[0008] The motor driver has its first input terminal connected to the output terminal of the battery cell position sensing module, and its output terminal connected to the servo motor. The motor driver is used to generate a braking signal when it receives a power failure signal to control the servo motor to stop working.

[0009] In one embodiment, the cell position sensing module includes:

[0010] The first normally closed sensor is located at one end of the frame;

[0011] The second normally closed sensor is located at the other end of the frame. When the first normally closed sensor or the second normally closed sensor detects that the battery cell has passed the unloading end of the conveyor belt, it generates a power-off signal.

[0012] In one embodiment, the positive terminal of the first normally closed sensor is connected to the positive terminal of the power supply of the first power module, the negative terminal of the first normally closed sensor is connected to the negative terminal of the power supply of the first power module, the output terminal of the first normally closed sensor is connected to the negative terminal of the second normally closed sensor, the positive terminal of the second normally closed sensor is connected to the positive terminal of the power supply of the first power module, and the output terminal of the second normally closed sensor is connected to the motor driver.

[0013] In one embodiment, the battery cell anti-drop control circuit further includes a second power module and a switch module. The second power module is used to supply power to the servo motor. The output terminal of the second power module is connected to the first terminal of the switch module, and the second terminal of the switch module is connected to the motor driver. The motor driver is used to output a rotation signal to the servo motor when the switch module is closed, so that the servo motor rotates.

[0014] In one embodiment, the motor driver includes a drive unit, a first input terminal of which is connected to a switch module, and an output terminal of which is connected to a servo motor. The drive unit is configured to receive a power signal from a second power module and output a rotation signal to the servo motor.

[0015] In one example, the motor driver also includes an emergency braking unit. The signal input terminal of the emergency braking unit is connected to the output terminal of the battery cell position sensing module, and the output terminal of the emergency braking unit is connected to the drive unit. The emergency braking unit is configured to receive the power-off signal from the battery cell position sensing module and send an emergency stop signal to the drive unit. The drive unit is configured to stop outputting rotation signals to the servo motor after receiving the emergency stop signal.

[0016] In one embodiment, the power output terminal of the drive unit includes a three-phase output terminal and a ground terminal. The three-phase output terminal corresponds to and is connected to the three-phase input terminal of the servo motor, and the ground terminal is connected to the ground terminal of the servo motor.

[0017] In one embodiment, the switching module includes a circuit breaker, the input of which is connected to a second power supply module, and the output of which is connected to a motor driver.

[0018] In one embodiment, the cell anti-drop control circuit further includes a manual brake, one end of which is connected to the first power module, and the other end of which is connected to the power input terminal of the emergency braking unit.

[0019] In one embodiment, the manual brake includes a normally closed manual brake switch, one end of which is connected to a first power module, and the other end of which is connected to the power input terminal of the emergency braking unit.

[0020] Secondly, this application provides a battery cell conveying device, applied to any of the battery cell anti-drop control circuits provided in the first aspect. The battery cell conveying device further includes a frame, a conveyor belt mounted on the frame, and a servo motor for driving the conveyor belt to rotate. The battery cell anti-drop control circuit is used to control the servo motor to stop working when it detects that a battery cell has passed the unloading end of the conveyor belt.

[0021] The aforementioned battery cell anti-drop control circuit includes a first power supply module, a battery cell position sensing module, and a motor driver. The input terminal of the battery cell position sensing module is connected to the first power supply module, and the battery cell position sensing module generates a power-off signal when it detects that a battery cell has passed the unloading end of the conveyor belt. The first input terminal of the motor driver is connected to the output terminal of the battery cell position sensing module, and the output terminal of the motor driver is connected to a servo motor. The motor driver generates a braking signal upon receiving the power-off signal to control the servo motor to stop working. The battery cell anti-drop control circuit in this application monitors the conveying position of the battery cell through the battery cell position sensing module. When the battery cell is conveyed to the unloading end of the conveyor belt, a power-off signal is generated, causing the motor driver to generate a braking signal upon receiving the power-off signal to control the servo motor to stop working, thereby reducing the possibility of the battery cell falling from the unloading end of the conveyor belt and causing a safety hazard. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the battery cell transmission device in some embodiments of this application;

[0024] Figure 2 This is a schematic diagram of the module structure used to illustrate the cell anti-drop control circuit in some embodiments of this application;

[0025] Figure 3 This is a schematic diagram illustrating the connection relationship between the emergency braking unit and the battery cell position sensing module and the servo motor, and between the drive unit and the switch module and the emergency braking unit, in some embodiments of this application.

[0026] Figure 4 This is a structural schematic diagram illustrating the connection relationship between the manual brake component and the first power module and the emergency brake unit in some embodiments of this application;

[0027] Figure 5 This is a schematic diagram of a cell anti-drop control circuit in some embodiments of this application.

[0028] Explanation of icon numbers:

[0029] 100, First power supply module; 200, Cell position sensing module; 210, First normally closed sensor; 220, Second normally closed sensor; 300, Motor driver; 310, Emergency braking unit; 320, Drive unit; 400, Second power supply module; 410, Switch module; 500, Manual brake; 600, Frame; 700, Conveyor belt; 800, Servo motor; 900, Cell. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] When prismatic, pouch, and cylindrical cells are produced automatically on a battery module production line, in order to meet the needs of different workstations, individual cells need to be placed on cell trays on a conveyor belt. The conveyor belt is driven by a motor to move, thereby enabling the cells to move at equal distances. This method has the advantages of simple structure, convenient maintenance, and long transmission distance.

[0037] In related technologies, processing equipment corresponding to each process is sequentially set on both sides of a conveyor belt. The battery cells pass through each station sequentially under the conveyor belt, completing each process. Finally, a robotic arm removes the battery cells from the conveyor belt. However, if the robotic arm malfunctions and fails to remove the processed battery cells from the conveyor belt in time, the cells will continue to move with the belt, posing a risk of falling off the unloading end and causing damage, or even more serious safety hazards.

[0038] To address the safety hazard posed by battery cells potentially falling from the conveyor belt unloading end in related technologies, firstly, referring to... Figure 1One embodiment of this application provides a battery cell conveying device, including a frame 600, a conveyor belt 700 disposed on the frame 600, and a servo motor 800 for driving the conveyor belt 700 to rotate. The battery cell conveying device also includes a battery cell anti-drop control circuit, which is used to control the servo motor 800 to stop working when it detects that a battery cell 900 has passed the unloading end of the conveyor belt 700.

[0039] A robotic arm is also installed next to the frame 600, which is used to transfer the battery cell 900. The conveyor belt 700 is used to transport the battery cell 900 to the next processing step, while the robotic arm located next to the frame 600 is used to grab the battery cell 900 on the conveyor belt 700 to transfer the battery cell 900 to the next processing station.

[0040] Specifically, when the robotic arm fails to pick up the battery cell 900 in time due to a malfunction, and the battery cell 900 that should have been transferred moves to the unloading end of the conveyor belt 700, the battery cell anti-drop control circuit controls the conveyor belt 700 to stop operating in time, that is, controls the servo motor 800 to stop working in time, thereby greatly reducing the risk of the battery cell 900 falling from the unloading end of the conveyor belt 700, and thus ensuring the safety and stability of the battery cell 900 during transfer.

[0041] Secondly, referring to Figure 2 One embodiment of this application provides a battery cell anti-drop control circuit, applicable to the battery cell conveying device provided in the first aspect above. The control circuit includes a first power module 100, a battery cell position sensing module 200, and a motor driver 300. The input terminal of the battery cell position sensing module 200 is connected to the first power module 100. The battery cell position sensing module 200 is used to generate a power-off signal when it detects that the battery cell 900 has passed the unloading end of the conveyor belt 700. The first input terminal of the motor driver 300 is connected to the output terminal of the battery cell position sensing module 200, and the output terminal of the motor driver 300 is connected to the servo motor 800. The motor driver 300 is used to generate a braking signal when it receives the power-off signal to control the servo motor 800 to stop working.

[0042] The first power module 100 is used to supply power to the cell position sensing module 200. For example... Figure 1 As shown, since the conveyor belt 700 is typically wound around the frame 600, and the conveying direction of the conveyor belt 700 is parallel to the length direction of the frame 600, when the cell position sensing module 200 is placed at the unloading end of the frame 600, the cell position sensing module 200 is also located at the unloading end of the conveyor belt 700. The motor driver 300 is used to control the start and stop of the servo motor 800.

[0043] Specifically, in combination Figure 1When the battery cell 900 moves to the unloading end of the conveyor belt 700, the battery cell position sensing module 200 senses the battery cell 900 and generates a power-off signal. The motor driver 300 generates a braking signal to control the servo motor 800 to stop working. When the battery cell 900 has not moved to the unloading end of the conveyor belt 700, the battery cell position sensing module 200 will not generate a power-off signal, and correspondingly, the motor driver 300 will not generate a braking signal. At this time, the servo motor 800 works normally.

[0044] In this embodiment, the battery cell anti-drop control circuit monitors the conveying position of the battery cell 900 through the battery cell position sensing module 200. When the battery cell 900 is conveyed to the unloading end of the conveyor belt 700, a power-off signal is generated. Upon receiving the power-off signal, the motor driver 300 generates a braking signal to control the servo motor 800 to stop working, thereby reducing the possibility of the battery cell 900 falling from the unloading end of the conveyor belt 700 and causing safety hazards.

[0045] Reference Figure 3 In some embodiments, the battery cell anti-drop control circuit further includes a second power module 400 and a switch module 410. The second power module 400 is used to supply power to the servo motor 800. The output terminal of the second power module 400 is connected to the first terminal of the switch module 410. The second terminal of the switch module 410 is connected to the motor driver 300. The motor driver 300 is used to output a rotation signal to the servo motor 800 when the switch module 410 is closed, so that the servo motor 800 rotates.

[0046] Specifically, when the switch module 410 is closed, the motor driver 300 is connected to the second power module 400 to provide power for the rotation of the servo motor 800.

[0047] Reference Figure 3 and Figure 4 In some embodiments, the motor driver 300 includes an emergency braking unit 310 and a drive unit 320. The signal input terminal of the emergency braking unit 310 is connected to the output terminal of the battery cell position sensing module 200. The first input terminal of the drive unit 320 is connected to the output terminal of the switch module 410, and the output terminal of the drive unit 320 is connected to the servo motor 800. The drive unit 320 is configured to receive a power signal from the second power module 400 and output a rotation signal to the servo motor 800. The output terminal of the emergency braking unit 310 is connected to the second input terminal of the drive unit 320. The emergency braking unit 310 is configured to receive a power-off signal from the battery cell position sensing module 200 and send an emergency stop signal to the drive unit 320. The drive unit 320 is configured to stop outputting drive signals to the servo motor 800 after receiving the emergency stop signal.

[0048] The second power module 400 supplies power to the servo motor 800 through the switch module 410 and the emergency braking unit 310 to ensure the normal operation of the servo motor 800. The emergency braking unit 310 processes the output signal of the cell position sensing module 200 and generates an emergency stop signal when it receives a power-off signal from the cell position sensing module 200. That is, it generates an emergency stop signal when the received output signal is a power-off signal, so that the drive unit 320 controls the switch module 410 to disconnect from the motor driver 300 after receiving the emergency stop signal, thereby stopping the switch module 410 from supplying power to the servo motor 800, thus realizing the emergency stop of the servo motor 800 to prevent the cell 900 from falling from the unloading end of the conveyor belt 700. When the output signal received by the emergency braking unit 310 is not a power-off signal, it controls the switch module 410 to remain closed so that the second power module 400 can stably supply power to the servo motor 800, thereby ensuring the normal operation of the servo motor 800.

[0049] Reference Figure 4 In some embodiments, the cell anti-drop control circuit also includes a manual brake 500, which is connected between the first power module 100 and the emergency braking unit 310.

[0050] In some special emergency situations, it is necessary to manually cut off the power to the servo motor 800 to stop its operation. For example, in the event of a sensor false alarm, mechanical failure, or temporary shutdown, it is necessary to pause the operation of the conveyor belt 700. In this case, a manual brake 500 needs to be set up so that workers can choose whether to stop the machine in a timely manner according to the actual working conditions.

[0051] Reference Figure 4 and Figure 5 In some embodiments, the cell position sensing module 200 includes a first normally closed sensor 210 and a second normally closed sensor 220. The first normally closed sensor 210 is disposed at one end of the frame 600; the second normally closed sensor 220 is disposed at the other end of the frame 600. When either the first normally closed sensor 210 or the second normally closed sensor 220 detects that the cell 900 has passed the unloading end of the conveyor belt 700, a power-off signal is generated. Additionally, the first power module 100 is a 24V DC power supply, and the second power module 400 is a 220V AC power supply.

[0052] Specifically, assuming that when the conveyor belt 700 rotates clockwise, the first normally closed sensor 210 is located at the loading end of the conveyor belt 700, and the second normally closed sensor 220 is located at the unloading end of the conveyor belt 700; while when the conveyor belt 700 rotates counterclockwise, the first normally closed sensor 210 is located at the unloading end of the conveyor belt 700, and the second normally closed sensor 220 is located at the loading end of the conveyor belt 700.

[0053] Taking the instantaneous rotation of the conveyor belt 700 as an example, under normal circumstances, when no battery cell 900 is detected passing by, the contacts of the second normally closed sensor 220 are in a closed state. However, when the battery cell 900 approaches the end of the conveyor line, i.e., the unloading end of the conveyor belt 700, the second normally closed sensor 220 detects the battery cell 900, the contacts open, and the motor driver 300 is triggered to implement emergency braking to prevent the battery cell 900 from falling. In addition, sensors are installed at both ends of the frame 600, which helps to achieve timely braking of the battery cell 900 when it moves to the unloading end of the conveyor belt 700 when the conveying direction of the conveyor belt 700 changes. That is, the battery cell 900 anti-fall function of the battery cell conveying device can still be realized, thereby reducing the risk of the battery cell 900 falling from the end of the conveyor belt and ensuring the reliability of the battery cell conveying device when conveying the battery cell 900.

[0054] Reference Figure 4 and Figure 5 In some embodiments, the positive terminal of the first normally closed sensor 210 is connected to the positive terminal of the power supply of the first power module 100, the negative terminal of the first normally closed sensor 210 is connected to the negative terminal of the power supply of the first power module 100, the output terminal of the first normally closed sensor 210 is connected to the negative terminal of the second normally closed sensor 220, the positive terminal of the second normally closed sensor 220 is connected to the positive terminal of the power supply of the first power module 100, and the output terminal of the second normally closed sensor 220 is connected to the motor driver 300.

[0055] Specifically, connecting the output terminal of the first normally closed sensor 210 to the negative terminal of the second normally closed sensor 220, and connecting the output terminal of the second normally closed sensor 220 to the motor driver 300, helps the first normally closed sensor 210 or the second normally closed sensor 220 to promptly send a power-off signal to the motor driver 300 when it detects the battery cell 900 moving to the unloading end of the conveyor belt 700. This enables the motor driver 300 to generate a braking signal, thereby achieving timely power-off of the servo motor 800. Furthermore, connecting the first normally closed sensor 210 and the second normally closed sensor 220 in series in the circuit simplifies the circuit structure and facilitates future maintenance and repair.

[0056] Reference Figure 4 and Figure 5 In some embodiments, the motor driver 300 includes a servo driver, the emergency braking unit 310 is a signal receiving and processing unit of the servo driver, the drive unit 320 is a signal output unit of the servo driver, the signal receiving and processing unit of the servo driver is connected to the output terminal of the battery cell position sensing module 200, and the signal output unit of the servo driver is connected to the servo motor 800.

[0057] A servo driver is an electronic device or chip used to control a servo motor 800. It receives control signals and outputs corresponding current and voltage to precisely control the operating state of the servo motor 800, such as position and speed. The signal receiving and processing unit of the servo driver includes multiple input terminals, for example... Figure 5 The ST01, ST02, COM-, L1, and L2 ports in the servo driver constitute the input interface of the emergency braking unit. These ports are used to receive the output signal from the battery cell position sensing module 200, allowing the servo driver to perform further processing based on whether the received output signal is a power-off signal or a non-power-off signal. The COM- port is connected in series with the output of the first normally closed sensor 210 and the output of the second normally closed sensor 220. If either normally closed sensor detects the battery cell passing by, the entire series circuit will be broken to obtain the detection signal of the battery cell 900's position. The L1 and L2 ports are the main power input ports and also the second power input terminals of the motor driver 300. Both are connected to the second power module 400 via the switch module 410 to obtain the power required for the servo motor 800 to operate. The signal output section of the servo driver includes multiple output terminals, for example... Figure 5 The U, V, W and PE ports.

[0058] Specifically, when the output signal received by the emergency braking unit 310 is a power-off signal, an emergency stop signal is generated to disconnect the drive unit 320 from the switch module 410; when the output signal received by the emergency braking unit 310 is a non-power-off signal, no emergency stop signal is generated to keep the drive unit 320 connected to the switch module 410, thereby providing a stable power supply to the servo motor 800.

[0059] In this embodiment, by combining the emergency braking unit 310 and the drive unit 320 in the servo driver, and by closely integrating the servo driver with the cell position sensing module 200 and the servo motor 800, this design not only simplifies the system structure and improves the response speed and control accuracy, but also enhances the reliability and safety of the system, making the cell anti-drop control circuit more efficient and reliable.

[0060] Reference Figure 5 In some embodiments, the power output terminal of the servo driver includes a three-phase output terminal and a ground terminal. The three-phase output terminal corresponds to and is connected to the three-phase input terminal of the servo motor 800, and the ground terminal is connected to the ground terminal of the servo motor 800.

[0061] The power output terminals of the servo driver are the aforementioned U, V, and W ports. These ports provide three-phase AC power and are connected one-to-one with the power input terminals (U1, V1, W1) of the servo motor 800. Additionally, the PE port of the servo driver is a grounding port, directly connected to the servo driver's ground terminal PE to ensure the safety and stability of the servo motor 800.

[0062] Specifically, the servo driver receives control signals from the sensors and calculates the three-phase current and voltage of the servo motor 800 based on the control signals, and outputs them to the servo motor 800 through the output terminals (U, V, W). At the same time, the grounding terminal ensures the safe transmission of current and voltage.

[0063] In this embodiment, the three-phase output terminals of the servo driver are connected one-to-one with the three-phase input terminals of the servo motor 800, and the ground terminal of the servo driver is connected to the ground terminal of the servo motor 800. This improves power output and operational stability while providing overload protection to ensure system safety.

[0064] Reference Figure 4 and Figure 5 In some embodiments, the switch module 410 includes a circuit breaker, the input of which is connected to the second power module 400, and the output of which is connected to the second power input of the servo driver.

[0065] Specifically, the circuit breaker in this embodiment includes two input pins and two output pins. One input pin is connected to the live wire of the second power module 400, and the other input pin is connected to the neutral wire of the second power module 400. One output pin is connected to the main power input terminal L1 of the servo driver, and the other output pin is connected to the main power input terminal L2 of the servo driver.

[0066] In this embodiment, a circuit breaker is installed, with its input terminal connected to the second power module 400 and its output terminal connected to the L1 and L2 ports of the servo driver. This design provides multiple safety protection and control functions, improving the reliability and safety of the entire cell anti-drop control circuit.

[0067] Reference Figure 5 In some embodiments, the manual brake 500 includes a normally closed manual brake switch, the input of which is connected to the first power module 100, and the output of which is connected to the input of the emergency brake unit 310.

[0068] The output of the manual normally closed brake switch is connected to both power input ports (ST01 port and ST02 port) of the servo driver. The manual normally closed brake switch is used to control the on / off of the series circuit formed by the first power module 100, the normally closed sensor and the emergency braking unit of the servo driver. When the manual normally closed brake switch is opened, the emergency braking unit of the servo driver is triggered to control the motor to stop.

[0069] Specifically, during normal operation, the manual normally closed brake switch is in the closed state. In case of emergency or special circumstances, such as when the sensor malfunctions and cannot control the servo driver to disconnect from the servo motor 800, the operator can manually disconnect the manual normally closed brake switch to quickly cut off the connection between the first power module 100 and the emergency braking unit 310, triggering the emergency braking unit 310 so that the servo driver disconnects the connection between the second power module 400 and the servo motor 800, thereby achieving an emergency stop of the servo motor 800 and ensuring circuit safety.

[0070] In this embodiment, a manually operated normally closed brake switch is provided so that workers can perform emergency braking on the servo motor 800 in special or emergency situations to achieve emergency braking of the conveyor belt 700. This can prevent the battery cell 900 from falling off the conveyor belt 700 in a timely manner, and avoid safety accidents or transmission errors.

[0071] The cell anti-drop control circuit in this application can greatly reduce the risk of the cell 900 falling from the unloading end of the conveyor belt 700, thereby ensuring the safety of the cell 900 during the conveying process.

[0072] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0073] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery cell anti-drop control circuit, characterized in that, Applicable to a battery cell conveying device, the battery cell conveying device includes a frame, a conveyor belt mounted on the frame, and a servo motor for driving the conveyor belt to rotate, the battery cell anti-drop control circuit includes: First power module; The battery cell position sensing module has its input end connected to the first power module. The battery cell position sensing module is used to generate a power-off signal when it detects that a battery cell has passed the unloading end of the conveyor belt. The motor driver has a first input terminal connected to the output terminal of the battery cell position sensing module, and the output terminal of the motor driver is connected to the servo motor. The motor driver is used to generate a braking signal when it receives the power failure signal, so as to control the servo motor to stop working.

2. The cell anti-drop control circuit according to claim 1, characterized in that, The cell position sensing module includes: The first normally closed sensor is located at one end of the frame; A second normally closed sensor is located at the other end of the frame. When the first normally closed sensor or the second normally closed sensor detects that the battery cell has passed the unloading end of the conveyor belt, it generates the power-off signal.

3. The cell anti-drop control circuit according to claim 2, characterized in that, The positive terminal of the first normally closed sensor is connected to the positive terminal of the power supply of the first power module, the negative terminal of the first normally closed sensor is connected to the negative terminal of the power supply of the first power module, the output terminal of the first normally closed sensor is connected to the negative terminal of the second normally closed sensor, the positive terminal of the second normally closed sensor is connected to the positive terminal of the power supply of the first power module, and the output terminal of the second normally closed sensor is connected to the motor driver.

4. The cell anti-drop control circuit according to claim 1, characterized in that, It also includes a second power module and a switch module. The second power module is used to supply power to the servo motor. The output terminal of the second power module is connected to the first terminal of the switch module, and the second terminal of the switch module is connected to the motor driver. The motor driver is used to output a rotation signal to the servo motor when the switch module is closed, so that the servo motor rotates.

5. The cell anti-drop control circuit according to claim 4, characterized in that, The motor driver includes a drive unit, a first input terminal of which is connected to the switch module, and an output terminal of which is connected to the servo motor. The drive unit is configured to receive a power signal from the second power module and output a rotation signal to the servo motor.

6. The cell anti-drop control circuit according to claim 5, characterized in that, The motor driver further includes an emergency braking unit. The signal input terminal of the emergency braking unit is connected to the output terminal of the cell position sensing module, and the output terminal of the emergency braking unit is connected to the drive unit. The emergency braking unit is configured to receive the power-off signal from the cell position sensing module and send an emergency stop signal to the drive unit. The drive unit is configured to stop outputting rotation signals to the servo motor after receiving the emergency stop signal.

7. The cell anti-drop control circuit according to claim 5, characterized in that, The power output terminal of the drive unit includes a three-phase output terminal and a ground terminal. The three-phase output terminal corresponds to and is connected to the three-phase input terminal of the servo motor. The ground terminal is connected to the ground terminal of the servo motor.

8. The cell anti-drop control circuit according to claim 4, characterized in that, The switching module includes a circuit breaker, the input terminal of which is connected to the second power supply module, and the output terminal of which is connected to the motor driver.

9. The cell anti-drop control circuit according to claim 4, characterized in that, It also includes a manual brake, one end of which is connected to the first power module, and the other end of which is connected to the power input terminal of the emergency braking unit.

10. A battery cell transfer device, characterized in that, The battery cell anti-drop control circuit, as described in any one of claims 1-9, further includes a frame, a conveyor belt mounted on the frame, and a servo motor for driving the conveyor belt to rotate. The battery cell anti-drop control circuit is used to control the servo motor to stop working when it detects that a battery cell has passed the unloading end of the conveyor belt.

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