Anode material automatic suction system and control method

Abstract

The application discloses a negative electrode material automatic suction system and a control method, and relates to the field of negative electrode material automatic suction systems.The system comprises a negative electrode material automatic suction system and a negative electrode material automatic automatic suction control method.The system comprises an instruction control subsystem, a graphitization furnace control subsystem and a suction crane control subsystem.The instruction control subsystem comprises a network switch, which is connected with a wireless AP and a wired AP.The graphitization furnace control subsystem is connected with the instruction control subsystem and comprises an embedded engineering computer connected with the network switch.The suction crane control subsystem is connected with the graphitization furnace control subsystem and comprises a CAN bus connected with the embedded engineering computer.The control method comprises the steps of system initialization, receiving a suction instruction, controlling the movement of a suction crane, controlling suction, monitoring dust concentration and ending suction.The application can improve production efficiency, eliminate the safety hazards caused by high temperature to workers, and effectively control the human body injuries caused by dust in a workshop.

Description

Technical Field

[0001] This invention relates to the field of lithium battery production equipment technology, and in particular to an automatic feeding system and control method for negative electrode materials. Background Technology

[0002] Currently, all graphite anode materials for lithium-ion batteries require graphitization before further use. A graphitization workshop includes at least one graphitization furnace and a suction crane with suction pipes. The workshop is also equipped with a dust removal system consisting of bag filters, dust collection pipes, and other components. After the graphitization of the graphite powder is completed and cooled, workers need to monitor and judge the furnace surface temperature. Manual temperature measurement during this unloading process not only poses significant safety hazards but also makes it difficult to guarantee unloading efficiency and material quality. Furthermore, the dust removal system in the graphitization workshop is always running, consuming a large amount of energy.

[0003] Therefore, we need an automatic dust-proof feeding system for lithium battery anode materials that can be configured based on existing equipment, as well as a control method to solve the above problems. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides an automatic feeding system and control method for negative electrode materials, which can improve production efficiency, eliminate safety hazards to workers caused by high temperatures, and effectively control the harm to human health caused by workshop dust.

[0005] In order to achieve the objectives of this invention, the following technologies are proposed: An automatic feeding system for negative electrode materials includes: The command and control subsystem includes a network switch connected to wireless and wired access points (APs), both of which are used to receive user commands. The graphitization furnace control subsystem is connected to the command control subsystem and includes an embedded engineering computer connected to a network switch. The computer is connected to a first temperature acquisition module and furnace zone indicator lights. The embedded engineering computer is pre-configured with a first predetermined temperature. The overhead crane control subsystem, connected to the graphitization furnace control subsystem, includes a CAN bus connected to an embedded engineering computer. This bus connects to an autonomous navigation crane controller, a material suction extension controller, a second temperature acquisition module, a dust monitoring module, and a ranging module. The autonomous navigation crane controller is connected to a first crane control module, an indicator light signal acquisition module, and a second crane control module. The material suction extension controller is connected to a collision warning module linked to the ranging module. The first and second crane control modules control the wheels of the overhead crane in two different directions.

[0006] Furthermore, both the first and second temperature acquisition modules use temperature sensors, the dust monitoring module uses a dust concentration sensor, the ranging module uses a lidar, the indicator light signal acquisition module uses a light sensor, and the collision warning module uses a PLC.

[0007] Furthermore, the embedded engineering computer is also connected to a first camera module, and the CAN bus is also connected to a second camera module.

[0008] An automatic feeding control method for negative electrode materials using an automatic feeding system includes the following steps: S100: After the system starts, it initializes the embedded engineering computer, autonomous navigation trolley controller, and material suction telescopic controller; S200: When the first temperature acquisition module detects that a graphitization furnace has completed cooling and is below the first predetermined temperature, the furnace zone indicator light of the graphitization furnace will issue an alarm. S300: After receiving the material suction command through a wired or wireless AP, the network switch transmits it to the embedded engineering computer. The embedded engineering computer calculates the moving material suction trolley route according to the material suction command and sends it to the CAN bus. S400: After receiving the moving material suction trolley route from the CAN bus, the autonomous navigation trolley controller drives the material suction trolley to move along the X-axis and Z-axis directions from the ready position through the first trolley control module and the second trolley control module respectively. S500: When the suction pipe of the suction crane is above the graphitization furnace to be suctioned, the autonomous navigation crane controller sends a signal to start suction to the CAN bus, and the suction telescopic controller receives the signal. S600: The suction telescopic controller drives the suction pipe to move downward and turns on the suction switch. Then, it sends a signal to start monitoring to the dust monitoring module via the CAN bus. When the dust concentration exceeds the preset value, the dust removal system of the suction crane is activated. S700: After the network switch receives a stop command through a wired or wireless AP, the material suction telescopic controller drives the material suction pipe to move upward and closes the material suction switch. The dust removal system stops running, and the material suction crane returns to the ready position.

[0009] Furthermore, the embedded engineering computer is also pre-configured with a second predetermined temperature, and the first predetermined temperature is less than the second predetermined temperature.

[0010] Furthermore, in S600, the following steps are performed during material feeding: The second temperature acquisition module monitors the temperature of the material currently on the surface in real time. When the material temperature is higher than the second predetermined temperature, a signal to stop material suction is sent to the suction extension controller via the CAN bus. The suction extension controller drives the suction pipe to move upward and closes the suction switch, and the dust removal system stops operating. Wait for the preset interval time; Determine whether the temperature of the material currently on the surface has dropped to the first predetermined temperature. If yes, continue feeding; otherwise, execute S700.

[0011] Furthermore, when there are multiple graphitization furnaces, each graphitization furnace is equipped with a graphitization furnace control subsystem.

[0012] Furthermore, the indicator light signal acquisition module is used to acquire the signal of the lit furnace area indicator light when the S200 is executed, and transmit it to the CAN bus through the autonomous navigation trolley controller.

[0013] Furthermore, during the execution of S400, S600, and S700, a ranging module is used to detect the distance between the suction pipe and the furnace wall of the graphitization furnace. If the distance is less than the preset warning distance, the ranging module sends an alarm to the collision warning module. The collision warning module transmits the alarm to the CAN bus through the suction telescopic controller. The suction telescopic controller stops the movement of the suction pipe, and the autonomous navigation trolley controller stops the operation of the first trolley control module and the second trolley control module. An alarm signal is sent to the network switch through the embedded engineering computer, and the alarm is sent to the user through a wired AP or a wireless AP.

[0014] The beneficial effects of this technical solution are as follows: 1. The embedded engineering computer can feed back information from inside the graphitization furnace to the material suction crane control subsystem. After receiving the corresponding feedback, the material suction crane control subsystem will perform material suction, which can replace manual inspection and save manpower.

[0015] 2. Since the temperature of the material in the upper layer of the graphitization furnace is low and the temperature of the material in the lower layer is high, the second temperature acquisition module of the feeding crane control subsystem can provide feedback on the real-time temperature status of the material and determine whether to continue feeding.

[0016] 3. The ranging module and collision warning module can effectively prevent the telescopic pipe from colliding with the furnace body.

[0017] 4. The dust monitoring module can automatically monitor the dust concentration and only turn on the dust removal system when the concentration exceeds the preset value, thus saving energy. Attached Figure Description

[0018] Figure 1 The diagram shows the architecture of an automatic feeding system for negative electrode materials according to an embodiment of this application.

[0019] Figure 2The main flowchart of the automatic feeding control method for negative electrode materials according to an embodiment of this application is shown. Detailed Implementation

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 The automatic feeding system for negative electrode materials shown includes an instruction control subsystem, a graphitization furnace control subsystem, and a feeding crane control subsystem.

[0022] The command and control subsystem includes a network switch, which connects to both wireless and wired access points (APs), all used to receive user commands. AP is short for Access Point.

[0023] The graphitization furnace control subsystem is connected to the command control subsystem, including an embedded engineering computer connected to a network switch. The computer is connected to a first temperature acquisition module, furnace zone indicator lights, and a first camera module. The embedded engineering computer is pre-configured with a first predetermined temperature and a second predetermined temperature, wherein the first predetermined temperature is less than the second predetermined temperature.

[0024] When there are multiple graphitization furnaces, each graphitization furnace is equipped with a graphitization furnace control subsystem.

[0025] The overhead crane control subsystem is connected to the graphitization furnace control subsystem, including a CAN (Controller Area Network) bus connected to an embedded engineering computer. It is connected to an autonomous navigation crane controller, a material suction telescopic controller, a second temperature acquisition module, a dust monitoring module, a second camera module, and a ranging module. The autonomous navigation crane controller is connected to a first crane control module, an indicator light signal acquisition module, and a second crane control module. The material suction telescopic controller is connected to a collision warning module that is connected to the ranging module.

[0026] Specifically, the first temperature acquisition module and the second temperature acquisition module both use temperature sensors, the dust monitoring module uses a dust concentration sensor, the ranging module uses a lidar, the indicator light signal acquisition module uses a light sensor, and the collision warning module uses a PLC (programmable logic controller).

[0027] like Figure 2 As shown, the automatic feeding control method for negative electrode materials using the above-mentioned automatic feeding system for negative electrode materials is operated according to the following steps: S100: After the system starts, it initializes the embedded engineering computer, autonomous navigation trolley controller, and material suction telescopic controller; S200: When the first temperature acquisition module detects that a graphitization furnace has completed cooling and is below the first predetermined temperature, the furnace area indicator light of the graphitization furnace will issue an alarm. Specifically, the indicator light signal acquisition module is used to acquire the signal of the lit furnace area indicator light when S200 is executed, and transmit the signal to the CAN bus through the autonomous navigation vehicle controller. S300: After receiving the material suction command through a wired or wireless AP, the network switch transmits it to the embedded engineering computer. The embedded engineering computer calculates the moving material suction trolley route according to the material suction command and sends it to the CAN bus. S400: After receiving the moving material suction trolley route from the CAN bus, the autonomous navigation trolley controller drives the material suction trolley to move along the X-axis and Z-axis directions from the ready position through the first trolley control module and the second trolley control module respectively. S500: When the suction pipe of the suction crane is above the graphitization furnace to be suctioned, the autonomous navigation crane controller sends a signal to start suction to the CAN bus, and the suction telescopic controller receives the signal. S600: The suction telescopic controller drives the suction pipe to move downward and turns on the suction switch. Then, it sends a signal to start monitoring to the dust monitoring module via the CAN bus. When the dust concentration exceeds the preset value, the dust removal system of the suction crane is activated. Specifically, in S600, the following steps are performed during material feeding: The second temperature acquisition module monitors the temperature of the material currently on the surface in real time. When the material temperature is higher than the second predetermined temperature, a signal to stop material suction is sent to the suction extension controller via the CAN bus. The suction extension controller drives the suction pipe to move upward and closes the suction switch, and the dust removal system stops operating. Wait for the preset interval time; Determine whether the temperature of the material currently on the surface has dropped to the first predetermined temperature. If yes, continue feeding; otherwise, execute S700. Specifically, since the second temperature acquisition module monitors in real time, a lower preset first temperature is used after the material cools down, instead of the second preset temperature, which can avoid frequent start-stop of the material suction operation.

[0028] S700: After the network switch receives a stop command through a wired or wireless AP, the material suction telescopic controller drives the material suction pipe to move upward and closes the material suction switch. The dust removal system stops running, and the material suction crane returns to the ready position.

[0029] Specifically, during the execution of S400, S600, and S700, a ranging module is used to detect the distance between the suction pipe and the furnace wall of the graphitization furnace. If the distance is less than the preset warning distance, the ranging module sends an alarm to the collision warning module. The collision warning module transmits the alarm to the CAN bus through the suction telescopic controller. The suction telescopic controller stops the movement of the suction pipe, the autonomous navigation trolley controller stops the operation of the first trolley control module and the second trolley control module, and sends an alarm signal to the network switch through the embedded engineering computer. The alarm is then sent to the user through a wired AP or a wireless AP.

[0030] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. A negative electrode material automatic suction control method, characterized by, An automatic feeding system for negative electrode materials is employed, the system comprising: The command and control subsystem includes a network switch connected to wireless and wired access points (APs), both of which are used to receive user commands. The graphitization furnace control subsystem is connected to the command control subsystem and includes an embedded engineering computer connected to a network switch. The computer is connected to a first temperature acquisition module and furnace zone indicator lights. The embedded engineering computer is pre-configured with a first predetermined temperature and a second predetermined temperature, and the first predetermined temperature is less than the second predetermined temperature. The material suction crane control subsystem is connected to the graphitization furnace control subsystem. It includes a CAN bus connected to an embedded engineering computer, which is connected to an autonomous navigation crane controller, a material suction telescopic controller, a second temperature acquisition module, a dust monitoring module, and a ranging module. The autonomous navigation crane controller is connected to a first crane control module, an indicator light signal acquisition module, and a second crane control module. The material suction telescopic controller is connected to a collision warning module connected to the ranging module. The method includes: S100: After the system starts, it initializes the embedded engineering computer, autonomous navigation trolley controller, and material suction telescopic controller; S200: When the first temperature acquisition module detects that a graphitization furnace has completed cooling and is below the first predetermined temperature, the furnace zone indicator light of the graphitization furnace will issue an alarm. S300: After receiving the material suction command through a wired or wireless AP, the network switch transmits it to the embedded engineering computer. The embedded engineering computer calculates the moving material suction trolley route according to the material suction command and sends it to the CAN bus. S400: After receiving the moving material suction trolley route from the CAN bus, the autonomous navigation trolley controller drives the material suction trolley to move along the X-axis and Z-axis directions from the ready position through the first trolley control module and the second trolley control module respectively. S500: When the suction pipe of the suction crane is above the graphitization furnace to be suctioned, the autonomous navigation crane controller sends a signal to start suction to the CAN bus, and the suction telescopic controller receives the signal. S600: The suction telescopic controller drives the suction pipe to move downward and opens the suction switch. Then, it sends a signal to start monitoring to the dust monitoring module via the CAN bus. When the dust concentration exceeds the preset value, the dust removal system of the suction crane is activated, and the following steps are performed during the suction process: The second temperature acquisition module monitors the temperature of the material currently on the surface in real time. When the material temperature is higher than the second predetermined temperature, a signal to stop material suction is sent to the suction extension controller via the CAN bus. The suction extension controller drives the suction pipe to move upward and closes the suction switch, and the dust removal system stops operating. Wait for the preset interval time; Determine whether the temperature of the material currently on the surface has dropped to the first predetermined temperature. If yes, continue feeding; otherwise, execute S700. S700: After the network switch receives a stop command through a wired or wireless AP, the material suction telescopic controller drives the material suction pipe to move upward and closes the material suction switch. The dust removal system stops running, and the material suction crane returns to the ready position.

2. The automatic suction of the negative material control method according to claim 1, characterized in that, Both the first and second temperature acquisition modules use temperature sensors, the dust monitoring module uses a dust concentration sensor, the ranging module uses a lidar, the indicator light signal acquisition module uses a light sensor, and the collision warning module uses a PLC.

3. The automatic feeding control method for negative electrode materials according to claim 1, characterized in that, The embedded engineering computer is also connected to a first camera module, and a second camera module is connected to the CAN bus.

4. The automatic feeding control method for negative electrode materials according to claim 1, characterized in that, When there are multiple graphitization furnaces, each graphitization furnace is equipped with a graphitization furnace control subsystem.

5. The automatic feeding control method for negative electrode materials according to claim 4, characterized in that, The indicator light signal acquisition module is used to acquire the signal of the lit furnace area indicator lights when the S200 is executed, and transmit the signal to the CAN bus through the autonomous navigation trolley controller.

6. The automatic feeding control method for negative electrode materials according to claim 1, characterized in that, During the execution of S400, S600, and S700, a ranging module is used to detect the distance between the suction pipe and the furnace wall of the graphitization furnace. If the distance is less than the preset warning distance, the ranging module sends an alarm to the collision warning module. The collision warning module transmits the alarm to the CAN bus through the suction telescopic controller. The suction telescopic controller stops the movement of the suction pipe, and the autonomous navigation trolley controller stops the operation of the first trolley control module and the second trolley control module. An alarm signal is sent to the network switch through the embedded engineering computer, and the alarm is sent to the user through a wired AP or wireless AP.

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