A full-automatic production line for silicon-carbon negative electrode material and a production process thereof

Abstract

The application relates to the technical field of silicon-carbon negative electrode material preparation, and provides a full-automatic production line for silicon-carbon negative electrode material and a production process thereof. The production line comprises a first processing module, a temporary storage module and a second processing module which are sequentially arranged along a material flow direction, a shunt module and a control module; the first processing module generates intermediate products in a continuous or semi-continuous mode; the second processing module comprises a plurality of parallel intermittent reaction devices which perform coating reactions in batches; the control module controls the temporary storage module to supply materials in a single batch in response to a material signal and schedules the devices to alternately operate; meanwhile, based on a matching relationship between a material detection result and a preset qualified condition, the control module controls the shunt module to guide the materials to a qualified path or an unqualified path. Heterogeneous rhythms are connected, and batch-level quality automatic shunting is realized; the product uniformity and production safety are improved.

Description

Technical Field

[0001] This invention relates to the field of silicon-carbon production technology, and in particular to a fully automated production line for silicon-carbon anode materials and its production process. Background Technology

[0002] Silicon-carbon anode materials, as the main anode materials for high-energy-density lithium-ion batteries, are widely used in many fields such as new energy vehicles, energy storage devices, and consumer electronics. CN121802387A discloses a continuous production line and its process for silicon-carbon anode materials. This process connects the deposition vessel and coating vessel in a sealed manner to form a complete material transport path. There are no isolation or batch-independent control measures between the deposition and coating steps, and no quality inspection or defective product sorting devices are installed. If deviations occur during production, defective products will be mixed with qualified products, reducing the quality of the entire batch or even causing it to be discarded. CN121466932A proposes a continuous preparation device and method that relies on a dual-axis conveyor lifting mechanism to achieve continuous material transport. While it also features seamless connection from start to finish, it lacks physical isolation between batches, making product quality tracking and control difficult. In addition, due to the long working time, continuous equipment is difficult to maintain a constant temperature and atmosphere field inside the furnace, which can easily lead to axial temperature gradients. This results in uneven heating of the material, which in turn affects the consistency of the carbon coating and the quality of the product. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in the aforementioned technologies. Therefore, the objective of this invention is to propose a fully automated production line for silicon-carbon anode materials and its production process, which effectively isolates defective products, avoids cross-contamination between batches, and improves product uniformity and quality traceability.

[0004] To achieve the above objectives, the present invention proposes a fully automated production line for silicon-carbon anode materials, comprising a first processing module, a temporary storage module, and a second processing module arranged sequentially along the material flow direction, as well as a diversion module and a control module located downstream of the discharge end of the second processing module. The first processing module is configured to perform a deposition process on a carbon matrix in a continuous or semi-continuous operation mode to generate an intermediate product; The second processing module includes multiple parallel batch reaction devices, configured to receive the intermediate product in batches in a batch operation mode and perform a coating reaction to obtain coated material; The traffic splitting module includes qualified paths and unqualified paths; The control module is configured to: respond to receiving a material request signal from the target batch reaction device, control the temporary storage module to supply material to the target batch reaction device in a single batch, and control the multiple parallel batch reaction devices to alternately perform feeding, reaction, and discharging operations; acquire the material detection results of the current batch of coating material; based on the matching relationship between the material detection results and preset qualification conditions, control the diversion module to guide the coating material to the qualified path or the unqualified path; the target batch reaction device is the device in the idle state among the multiple parallel batch reaction devices; The control module is also configured to uniquely associate and register the material test results, production timestamp, equipment number of the batch reaction equipment performing the coating reaction, and diversion status of each batch, generating a batch quality data chain; The system acquires real-time yield data from the first processing module and current material level data from the temporary storage module. Based on the real-time yield data and the batch stage progress of each batch reaction device, it predicts the evolution trajectory of the material level in the temporary storage module within a preset prediction time domain. The evolution trajectory is subject to both upper and lower material level constraints. The lower material level constraint is that at least one complete batch of the intermediate product is maintained in the temporary storage module, and the upper material level constraint is the rated capacity of the temporary storage module. Using the evolution trajectory and the current batch stage and progress of each batch reactor as input, staggered scheduling instructions are generated on a rolling basis according to a preset rolling cycle. The staggered scheduling instructions are used to determine the next approved target batch reactor and its feeding time, and the determination of the feeding time simultaneously meets the following three constraints: process staggered constraints where at most one batch reactor is in the feeding or discharging state at the same time; heat load staggered constraints where the high-power heating periods of each batch reactor are staggered and the predicted peak value of the plant's power load does not exceed the preset demand limit; and phase arrangement constraints where the temperature difference between the corresponding temperature zones of the batch reactor in the constant temperature zone and the adjacent batch reactor does not exceed the preset thermal coupling threshold. The phase arrangement constraints are achieved by arranging the time phase difference between the batch programs of each batch reactor. In response to the predicted evolution trajectory reaching the upper limit constraint of the material level within the predicted time domain, the intermittent reaction equipment in the feeding state is triggered in advance to issue a material request signal, or the isothermal stage duration of the current batch is extended; in response to the predicted evolution trajectory reaching the lower limit constraint of the material level, the feeding to the intermittent reaction equipment in the idle state is delayed, and a load reduction operation request is sent to the first processing module. Based on the batch quality data chain, the historical batch pass rate of each batch reaction equipment within the preset statistical period is statistically analyzed, and the batch reaction equipment with the higher historical batch pass rate is given a higher scheduling priority.

[0005] In one implementation, the temporary storage module is configured to accommodate at least one complete batch of the intermediate and maintain a protective atmosphere; the control module controls the temporary storage module to supply the target batch reaction equipment in a single batch, including: in response to the material request signal, controlling the temporary storage module to deliver the pre-stored single batch of the intermediate to the target batch reaction equipment in one go.

[0006] In one implementation, the temporary storage module includes a sealed silo and a weighing device; the sealed silo is configured to contain the intermediate product and maintain the protective atmosphere; the weighing device is configured to estimate the weight of the material in a single batch before the single batch is fed; the control module controls the temporary storage module to deliver the pre-stored single batch of the intermediate product to the target batch reaction equipment in one go, including: controlling the discharge valve at the bottom of the sealed silo to fully open, so as to discharge the intermediate product corresponding to the estimated weight of the single batch of material to the target batch reaction equipment.

[0007] In one implementation, the second processing module further includes a distribution valve group; the feed end of each of the intermittent reaction devices is connected to the discharge end of the temporary storage module through the distribution valve group; the control module controls the multiple parallel intermittent reaction devices to alternately perform feeding, reaction and discharge operations, including: generating a staggered scheduling instruction based on the operating status of each of the intermittent reaction devices, and controlling the distribution valve group to selectively open the corresponding feed path based on the staggered scheduling instruction.

[0008] In one embodiment, the intermittent reaction equipment is an intermittent rotary kiln, which is equipped with a nitrogen protection component and a temperature control component. The nitrogen protection component is configured to maintain a nitrogen protective atmosphere during the coating reaction. The temperature control component is configured to execute multi-segment temperature curve control according to a preset batch program, which includes a heating segment, a constant temperature segment, and a cooling segment. Thermal coupling suppression is achieved between the intermittent rotary kilns through the furnace body spacing and the heat insulation layer.

[0009] In one implementation, the diversion module includes a normal material receiving channel and an abnormal material receiving channel, the inlets of which are connected to the outlet of the second processing module. The fully automated production line also includes an online detection module configured to sample and detect the coated material to generate a material detection result. The control module, based on the matching relationship between the material detection result and preset qualification conditions, controls the diversion module to guide the coated material to the qualified path or the unqualified path, including: controlling the coated material to enter the normal material receiving channel in response to the material detection result meeting the preset qualification conditions; and controlling the coated material to enter the abnormal material receiving channel in response to the material detection result not meeting the preset qualification conditions. The preset qualification conditions include a joint judgment matrix of carbon content threshold range, particle size distribution threshold range, and specific surface area threshold range.

[0010] In one implementation, the abnormal material receiving channel is connected to an independent collection device for isolating and collecting the unqualified coating material; the normal material receiving channel is connected to a post-processing module for conveying the coating material diverted to the normal material receiving channel to the post-processing module; the post-processing module includes a mixing device, a screening device, and a demagnetizing device connected sequentially along the material flow direction; the fully automatic production line also includes a batch mixing and packaging module, configured to receive the coating material processed by the post-processing module, and mix and package the processed coating material with graphite according to a set ratio.

[0011] The present invention also proposes a production process, comprising: performing a deposition process on a carbon matrix in a continuous or semi-continuous operation mode to generate an intermediate product; temporarily storing the intermediate product in a temporary storage module; receiving the intermediate product in the temporary storage module in batches and performing a coating reaction in a batch operation mode through multiple parallel batch reaction devices to obtain coated material; obtaining the material detection result of the current batch of coated material; and diverting the coated material to a qualified path or an unqualified path based on the matching relationship between the material detection result and preset qualification conditions; wherein, receiving the intermediate product in batches and performing the coating reaction includes: responding to receiving a material request signal from a target batch reaction device, feeding the intermediate product in the temporary storage module to the target batch reaction device in a single batch, and controlling the multiple parallel batch reaction devices to alternately perform feeding, reaction, and discharging operations; the target batch reaction device is the device in an idle state among the multiple parallel batch reaction devices.

[0012] As one implementation, during the deposition process and the coating reaction, the reaction environment is maintained under a nitrogen micro-positive pressure protection state; after the coating material is diverted to the qualified path, the production process further includes: performing post-processing operations of mixing, sieving and demagnetizing on the coating material diverted to the qualified path in sequence; and performing mixing and packaging operations on the coating material after the post-processing operation with graphite according to a set ratio.

[0013] As one implementation method, the production process further includes: During the isothermal stage of the coating reaction, the residual concentration of carbon source gas in the reaction tail gas is detected online, and the cumulative carbon source conversion amount is calculated in real time based on the difference between the residual concentration of the carbon source gas and the flow rate of the carbon source gas, which serves as an online quantitative indicator characterizing the coating process; the cumulative carbon source conversion amount and the target carbon content of the coating material are pre-calibrated to correspond. When the cumulative conversion amount of carbon source reaches the preset deposition target amount corresponding to the target carbon content, the coating endpoint of the current batch is determined and the isothermal stage is ended, instead of ending the coating reaction according to a fixed isothermal duration. During the isothermal phase, the flow rate of the carbon source gas is dynamically adjusted based on the decay trend of the carbon source conversion rate calculated from the residual concentration of the carbon source gas: when the decrease in the carbon source conversion rate per unit time exceeds a preset decay threshold, the flow rate of the carbon source gas is reduced according to a preset gradient. Before entering the cooling stage after the isothermal stage ends, a gradient switching of the carbon source gas and nitrogen is performed: first, the supply of the carbon source gas is cut off, and then the atmosphere inside the furnace is purged with nitrogen until the residual concentration of the carbon source gas in the reaction tail gas drops below the preset safe concentration, and then the cooling stage begins. The actual cumulative carbon source conversion amount achieved in the current batch, the determined coating endpoint time, and the material detection results of the current batch are associated and registered. Based on the deviation between the actual cumulative carbon source conversion amount of the current batch and the preset deposition target amount, the preset deposition target amount and / or the initial parameters of the isothermal stage in the batch program are corrected for the next batch.

[0014] Beneficial effects:

[0015] The fully automated silicon-carbon anode material production line and its manufacturing process provided by this invention effectively decouples the cycle mismatch problem between continuous silicon deposition and intermittent carbon coating by combining the heterogeneous operation modes of the first and second processing modules and utilizing a temporary storage module and a parallel alternating scheduling mechanism for multiple devices. This ensures the uniformity and batch consistency of carbon coating. By constructing an automatic diversion mechanism based on online detection results, real-time identification and physical isolation of defective products are achieved, eliminating cross-contamination between batches and improving finished product yield and quality traceability. Through a closed-loop nitrogen micro-positive pressure conveying system and automated interlocking control throughout the entire process, the risks and safety hazards of oxidation and moisture absorption caused by manual handling are eliminated.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings.

[0017] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a block diagram of a fully automated production line for silicon-carbon anode materials according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the incoming material preparation and feeding fluidized bed stage of a fully automated silicon-carbon anode material production line according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the normal material receiving channel and the abnormal material receiving channel of a fully automated silicon-carbon anode material production line according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the feeding rotary kiln stage of a fully automated silicon-carbon anode material production line according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the mixing, screening, demagnetizing, and packaging stages, as well as the silicon-carbon batch mixing and packaging stage, of a fully automated silicon-carbon anode material production line according to an embodiment of the present invention. Figure 6 This is a schematic diagram of a production process based on a fully automated production line for silicon-carbon anode materials according to an embodiment of the present invention.

[0019] Figure label: 1. Nitrogen source, 2. Fluidized bed feed hopper, 3. Feeder, 4. Screw feeder, 5. Receiving bin, 6. Metering bin, 7. Abnormal material receiving channel, 8. Normal material receiving channel, 9. Simple packaging machine, 10. Roots blower, 11. Online filter. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention. Example 1:

[0021] like Figures 1 to 6 As shown, this embodiment provides a fully automated production line for silicon-carbon anode materials. The production line includes a first processing module, a temporary storage module, and a second processing module arranged sequentially along the material flow direction, as well as a diversion module and a control module located downstream of the discharge end of the second processing module.

[0022] The first processing module is configured to perform deposition processing on a carbon matrix to generate intermediate products in a continuous or semi-continuous operation mode. For example, the first processing module can use a fluidized bed reactor, a moving bed reactor, or a continuous tubular furnace to grow nano-silicon layers in situ on a porous carbon framework using chemical vapor deposition (CVD). Semi-continuous operation means that feeding or discharging can continue indefinitely, but the material in the reaction chamber is not indefinitely flowing; it can continuously supply raw materials and continuously produce intermediate products, and can also replenish raw materials and discharge products in stages, without needing to clear all the material and restart the process each time like in intermittent operation; nor does it experience the completely uninterrupted situation of a purely continuous operation.

[0023] A temporary storage module is positioned between the first and second processing modules. Since the output of the first processing module is typically continuous or quasi-continuous, while the consumption of the second processing module is periodic and discrete, the temporary storage module effectively decouples the rigid connection between the upstream and downstream processes by accommodating a certain amount of intermediate products. When the second processing module stops feeding during the reaction phase, the temporary storage module absorbs the continuous feed from the first processing module; when the second processing module completes its reaction and requires rapid replenishment, the temporary storage module can respond instantly, providing sufficient material reserves. This allows both upstream and downstream equipment to operate independently under their respective optimal conditions without interference, ensuring the stability of the entire production line.

[0024] The second processing module includes multiple parallel batch reaction devices configured to receive intermediate products in batches and perform coating reactions to obtain coated materials in a batch operation mode.

[0025] Based on the intermittent operation mode, a precise and controllable thermal history and atmosphere environment are provided for each batch of materials, which facilitates the improvement of the uniformity and consistency of the carbon coating layer. Intermittent reaction equipment can be rotary kilns, box furnaces, or batch reactors, etc.

[0026] The diversion module includes qualified and unqualified paths and is located downstream of the discharge end of the second processing module. The diversion module can adopt specific structural forms such as multi-way reversing valves, Y-type distributors, pneumatic flap valves, or rotary distributors, which facilitates complete isolation from qualified product flow and eliminates the risk of cross-contamination caused by valve leakage or airflow disturbance.

[0027] The control module is configured to: respond to a material request signal from the target batch reaction equipment, control the temporary storage module to supply material to the target batch reaction equipment in a single batch, and control multiple batch reaction equipment connected in parallel to alternately perform feeding, reaction and discharging operations; acquire the material detection results of the current batch of coating material; based on the matching relationship between the material detection results and preset qualified conditions, control the diversion module to guide the coating material to a qualified path or an unqualified path; the target batch reaction equipment is the equipment in an idle state among multiple batch reaction equipment connected in parallel.

[0028] The material request signal is a readiness request actively issued by the target intermittent reaction equipment after completing the previous batch discharge, furnace cleaning, and the furnace environment (such as temperature and atmosphere) has reached the preset feeding conditions. The control module only triggers the temporary storage module to perform a single batch feeding when it receives this signal and confirms that the target equipment is in an idle state.

[0029] From a production scheduling perspective, the control module continuously collects data on the operating status of each batch reactor, and generates staggered scheduling commands based on this data. Staggered scheduling commands arrange the time of multiple parallel batch reactors according to the principles of complementary process sequences and dispersed peak loads. Specific scheduling rules include: Process staggering: The feeding, reaction, and discharging processes of each batch reactor are separated. At most, only one reactor is feeding or discharging at any given time. This prevents several reactors from simultaneously requesting materials from the storage tank, ensuring consistency and accuracy of each supply. Heat load staggering: The high-power consumption periods such as heating and insulation of each batch reactor are staggered to prevent multiple reactors from simultaneously performing high-power heating, which could cause a surge in current in the plant's power system, reducing the demand for power distribution capacity and energy consumption during operation.

[0030] From a quality control perspective, the control module can provide closed-loop feedback on data for each batch. This enables the production process to self-regulate and correct itself, preventing defective products from being passed on to the next workstation.

[0031] The temporary storage module and the parallel and alternating scheduling of multiple devices effectively solve the problem of heterogeneous cycle timing and can achieve a similar effect to continuous production. In addition, the automatic diversion method based on real-time monitoring can ensure the quality and traceability of each silicon-carbon anode material, thereby improving the product qualification rate and operational stability of the entire production line.

[0032] The control module is also configured to uniquely associate and register the material test results, production timestamp, equipment number of the batch reaction equipment performing the coating reaction, and diversion status of each batch, generating a batch quality data chain; The system acquires real-time yield data from the first processing module and current material level data from the temporary storage module. Based on the real-time yield data and the batch stage progress of each batch reaction device, it predicts the evolution trajectory of the material level in the temporary storage module within a preset prediction time domain. The evolution trajectory is subject to both upper and lower material level constraints. The lower material level constraint is that at least one complete batch of the intermediate product is maintained in the temporary storage module, and the upper material level constraint is the rated capacity of the temporary storage module. Using the evolution trajectory and the current batch stage and progress of each batch reactor as input, staggered scheduling instructions are generated on a rolling basis according to a preset rolling cycle. The staggered scheduling instructions are used to determine the next approved target batch reactor and its feeding time, and the determination of the feeding time simultaneously meets the following three constraints: process staggered constraints where at most one batch reactor is in the feeding or discharging state at the same time; heat load staggered constraints where the high-power heating periods of each batch reactor are staggered and the predicted peak value of the plant's power load does not exceed the preset demand limit; and phase arrangement constraints where the temperature difference between the corresponding temperature zones of the batch reactor in the constant temperature zone and the adjacent batch reactor does not exceed the preset thermal coupling threshold. The phase arrangement constraints are achieved by arranging the time phase difference between the batch programs of each batch reactor. In response to the predicted evolution trajectory reaching the upper limit constraint of the material level within the predicted time domain, the intermittent reaction equipment in the feeding state is triggered in advance to issue a material request signal, or the isothermal stage duration of the current batch is extended; in response to the predicted evolution trajectory reaching the lower limit constraint of the material level, the feeding to the intermittent reaction equipment in the idle state is delayed, and a load reduction operation request is sent to the first processing module. Based on the batch quality data chain, the historical batch pass rate of each batch reaction equipment within the preset statistical period is statistically analyzed, and the batch reaction equipment with the higher historical batch pass rate is given a higher scheduling priority.

[0033] The working principle and beneficial effects are as follows: Due to the different rates of intermediate product generation and consumption between the upstream first processing module and the downstream multiple batch reaction devices, the control module predicts the evolution trajectory of the material level in the temporary storage module within a preset prediction time domain. The evolution trajectory is subject to dual constraints of the upper and lower limits of the material level. The lower limit constraint requires that at least one complete batch of intermediate products must always be maintained in the temporary storage module to ensure that the entire batch can be supplied immediately when any device issues a material demand signal. The upper limit constraint is the rated capacity of the sealed silo; exceeding the limit will force the upstream to slow down or even shut down, disrupting the stability of the fluidized bed deposition process. Based on the evolution trajectory and the current batch stage and progress of each batch reaction device as input, staggered scheduling instructions are generated according to a preset rolling cycle, facilitating the accurate determination of the triple constraints. In response to the predicted evolution trajectory touching the material level constraint within the prediction time domain, different control logics are generated, improving the accuracy of control. Example 2:

[0034] In one implementation, the temporary storage module is configured to hold at least one complete batch of intermediate product and maintain a protective atmosphere. Physically, the temporary storage module is a gas-tight, sealed silo. The sealed silo is equipped with a nitrogen-sealing system, which continuously or intermittently introduces high-purity nitrogen to maintain a slightly positive pressure within the silo. This nitrogen-sealing structure ensures the stability of the intermediate product's physicochemical properties while awaiting feeding.

[0035] Furthermore, the control module controls the temporary storage module to supply materials to the target batch reaction equipment in a single batch, including: in response to the material request signal, controlling the temporary storage module to deliver the pre-stored single batch of intermediate products to the target batch reaction equipment in one go.

[0036] To support the precise execution of the aforementioned one-time delivery, the temporary storage module also includes a sealed silo and a weighing and metering device. The weighing and metering device is configured to estimate the weight of a single batch of material before each batch is fed. In practice, this estimation refers to accurately weighing and confirming the material in a single batch within the temporary storage module before feeding it into the target batch reactor. This can be achieved, for example, through a weighing sensor located at the bottom of the sealed silo or a separate metering hopper. This estimation mechanism eliminates metering lag and flow fluctuation interference during dynamic delivery, ensuring that the weight of the material entering the reactor strictly conforms to the formula settings, thus improving feeding accuracy.

[0037] The control module controls the temporary storage module to deliver a pre-stored batch of intermediate products to the target batch reactor in one go. Specifically, this includes fully opening the discharge valve at the bottom of the sealed silo to empty the intermediate products corresponding to the predicted batch weight into the target batch reactor. The discharge valve can be an actuator with large-diameter, rapid opening and closing capabilities, such as a pneumatic butterfly valve, slide gate valve, or diaphragm pump. Upon receiving a material request signal and confirming the predicted quantity, the control module drives the discharge valve to instantly switch to the fully open state, using the material's own weight or auxiliary pneumatic conveying pressure to discharge the entire batch of material at high speed into the downstream reactor. This fully utilizes the instantaneous high flow rate characteristic, avoiding the accuracy drift problem common in continuous conveying equipment such as screw feeders. It ensures the absolute repeatability of batch feed quantities, significantly reduces the frequency of movement and stress time of moving parts, shortens non-reaction time, and improves the overall effective capacity utilization rate of the production line. Example 3:

[0038] In one implementation, the second processing module also includes a distribution valve assembly, through which the feed ends of each batch reaction unit are connected to the discharge end of the temporary storage module. The distribution valve assembly forms a logistics routing hub connecting the temporary storage module and multiple batch reaction units. The distribution valve assembly can employ devices with flow path selection functions, such as pneumatic multi-way directional valves, rotary feeders, or Y-type switching valves, to precisely guide intermediate products from the temporary storage module to the designated target reaction unit according to control commands, while maintaining the closed and isolated state of other branches.

[0039] The control module controls multiple parallel intermittent reaction devices to alternately perform feeding, reaction and discharging operations, including: generating staggered scheduling instructions based on the operating status of each intermittent reaction device, and controlling the distribution valve group to selectively open the corresponding feeding path based on the staggered scheduling instructions.

[0040] Off-peak scheduling refers to the use of time-series arrangement to stagger and complement the working phases of multiple devices on the timeline. This improves the overall utilization rate of equipment and output per unit time, while retaining the quality control advantages of independent batch processing for each device.

[0041] Furthermore, the batch reaction equipment is a batch rotary kiln, which is equipped with a nitrogen protection system and a temperature control system. As the main reaction device, the batch rotary kiln relies on its rotation to improve heat transfer and gas-solid contact between materials during operation. The kiln body rotates continuously, during which materials are constantly thrown up and down, constantly renewing their surface. This avoids the temperature gradients and uneven coating problems that occur in static calcination or fixed-bed reactors, ensuring that each batch produces the same product. The nitrogen protection system maintains a nitrogen protective atmosphere throughout the entire coating reaction process. It continuously blows in high-purity nitrogen and maintains a slight positive pressure to isolate the presence of oxygen and moisture, thus preventing oxidation damage to the silicon-carbon material at high temperatures and the resulting hazards. The temperature control system is used to control the temperature changes in a multi-stage manner according to a pre-set batch program. This multi-stage temperature change includes heating and holding at a constant temperature, followed by a cooling process. Heating stage: The temperature is raised from room temperature to between 900℃ and 1100℃ at a rate of 3℃ / min to 8℃ / min, and maintained for 1.5 to 3 hours during this period. Isothermal stage: The temperature is maintained between 900℃ and 1100℃ for a period of time (2 to 6 hours). During this stage, carbon source gas is introduced for vapor deposition coating. Cooling and holding stage: The temperature is lowered to below 100℃ at a rate of 2℃ / min to 5℃ / min, and this process takes 2 to 4 hours before the entire batch of material is discharged. The temperature control device uses a PID closed-loop to adjust the heating power to ensure that each batch of material can reproduce the predetermined heat treatment curve, avoiding batch-to-batch quality differences caused by changes in ambient temperature or residual heat from the previous batch.

[0042] The intermittent rotary kilns achieve thermal coupling through the distance between the kiln bodies and the insulation layer to maintain the consistency of products from different batches. The distance between the kiln bodies and the thickness of the insulation material are determined by thermal calculations based on the maximum output power, maximum operating temperature of the equipment, and the heat dissipation of the surrounding environment. The standard for suppressing thermal coupling is: when any intermittent rotary kiln is at its highest operating temperature in the constant temperature section, the temperature difference in the corresponding temperature zones of two adjacent intermittent rotary kilns cannot exceed ±5 degrees Celsius, and the temperature rise outside these two kilns cannot exceed 50 degrees Celsius. This ensures that the temperature distribution inside a single kiln is not affected by adjacent kilns. Example 4:

[0043] In one implementation, the diversion module includes a normal material receiving channel and an abnormal material receiving channel, both of which have their inlets connected to the outlet of the second processing module. The normal material receiving channel directly connects to the downstream post-processing process to ensure continuous production of qualified products; the abnormal material receiving channel serves as an emergency outlet for quality abnormalities.

[0044] The fully automated production line also includes an online detection module, configured to sample and test the coated material to generate material testing results. The sampling point setting of the online detection module is crucial; it is typically located at the outlet of the batch reaction equipment, on the inlet pipe of the discharge tank, or within the common feed section of the diversion module. The testing indicators cover key physicochemical parameters affecting the electrochemical performance of silicon-carbon anode materials, such as carbon coating amount (carbon content), particle size distribution (D50), and specific surface area (BET). The online detection module can employ a combination of equipment such as laser particle size analyzers, infrared carbon-sulfur analyzers, and gas adsorption specific surface area analyzers, or integrated multi-functional online analytical instruments. This significantly reduces the time delay of the quality feedback loop.

[0045] Based on the matching relationship between the material detection results and the preset qualified conditions, the control module controls the diversion module to guide the coating material to the qualified or unqualified path, including: in response to the material detection results meeting the preset qualified conditions, controlling the coating material to enter the normal material receiving channel; in response to the material detection results not meeting the preset qualified conditions, controlling the coating material to enter the abnormal material receiving channel.

[0046] The preset qualification conditions include a joint judgment matrix of carbon content threshold range, particle size distribution threshold range, and specific surface area threshold range.

[0047] The joint judgment matrix is ​​a ternary parameter threshold judgment matrix. It uses three independent judgment indicators—carbon content, particle size distribution (D50), and specific surface area (BET)—to set the acceptable range for each judgment interval. Only when all three judgment values ​​are within their respective acceptable ranges is the product considered acceptable and guided to the normal material receiving path. If any judgment item exceeds its corresponding acceptable range, it is considered unacceptable and directed to the abnormal material receiving port. For example, if the carbon content of a batch of material is within the standard, but the specific surface area (BET) is far below the lower limit, it indicates that the carbon coating layer is too thick or there is a problem of pore blockage. This will seriously affect the lithium-ion permeability, causing a decrease in battery rate performance. Furthermore, even if the carbon content and specific surface area meet the standard requirements, if large particles appear in the particle size distribution (D50), they can easily penetrate the separator during the preparation of the positive and negative electrode slurries, causing a short circuit risk. When using the joint judgment matrix, it is essential to ensure that all key parameters are within their respective threshold ranges for the product to be considered acceptable. This multi-parameter correlation judgment method can improve the safety and stability of the final product.

[0048] The diversion process is only performed on a specific batch of materials that has recently completed its reaction. The control module uniquely associates and records the test results of this batch of materials, the production timestamp, the equipment number, and the diversion status. This allows for quick identification of the cause of a problem, thus enabling the production process to be continuously improved. Example 5:

[0049] As one implementation method, the abnormal material receiving channel is connected to an independent collection device for isolating and collecting non-conforming packaging materials. This independent collection device can take various forms, such as a simple packaging machine, a sealed waste bin, or a dedicated collection container. When the control module determines that a batch of material is non-conforming and drives the diversion module to guide it into the abnormal material receiving channel, the material will directly enter the independent collection device for sealing or packaging. By setting up a dedicated isolation collection device, the risk of non-conforming products mixing with the conforming product stream due to valve leakage, malfunction, or incomplete cleaning is eliminated at the source.

[0050] The normal material receiving channel connects to the post-processing module, which transports the coated material diverted to the normal material receiving channel to the post-processing module. The post-processing module includes mixing equipment, screening equipment, and demagnetizing equipment connected sequentially along the material flow direction. The initial mixing process typically uses a high-efficiency plow mixer or ribbon mixer to disperse and homogenize the carbon-coated material using mechanical shearing force. Because the material may exhibit soft agglomeration during the high-temperature reaction process, direct screening would cause the agglomerates to be mistakenly identified as large particles and rejected, resulting in a reduced recovery rate. Therefore, the material must be broken down into a relatively loose state before screening. The next step is screening, such as using an ultrasonic vibrating screen to remove large particles or foreign objects that meet the particle size requirements, ensuring that the product particle size distribution (D50) is within a predetermined range. This prevents the risk of short circuits caused by large particles puncturing the separator during battery electrode coating. The final demagnetization process is located after the main production process. This can be achieved using multi-stage permanent magnet separators or electromagnetic separators to capture small amounts of iron powder or magnetic debris accumulated during the production line. This ensures that the delivered product is free of contamination and safe to use, thereby improving battery yield and long-term stability.

[0051] The fully automated production line also includes a batch mixing and packaging module, configured to receive the coating material processed by the post-processing module and mix it with graphite according to a set ratio for packaging. The batch mixing and packaging module provides the production line with strong flexibility and rapid market response. It includes a silicon carbide silo for receiving pure silicon carbide material and a graphite silo for receiving graphite raw materials. The bottom of each silo is connected to a precision metering feeder, such as a loss-in-weight screw feeder. The control module can issue formula instructions based on order requirements, driving the two feeders to synchronously deliver materials to the batch mixer with extremely high precision, achieving dynamic online mixing of silicon carbide and graphite. This shortens changeover time, improves equipment utilization, and enables companies to quickly respond to market orders for small batches and multiple varieties. Example 6:

[0052] This embodiment provides a production process, which includes the following steps: Step S100: Perform a deposition process on the carbon matrix in a continuous or semi-continuous operation mode to generate an intermediate product.

[0053] For example, fluidized bed chemical vapor deposition (CVD) can be used to grow nano-silicon layers in situ on the surface of a porous carbon framework. This ensures the full release of upstream capacity and the stability of raw material conversion, avoiding frequent start-ups and shutdowns or low-load operation of upstream equipment caused by intermittent downstream processing.

[0054] In step S200, the intermediate product is temporarily stored in a temporary storage module. The temporary storage module maintains a slightly positive nitrogen protective atmosphere at all times. This is not only to accommodate at least one complete batch of material to address upstream and downstream rate mismatch, but also to provide an inert, oxygen- and water-free protective environment for the highly active silicon-deposited intermediate product. This ensures the stability of the intermediate product's physicochemical properties while awaiting feeding, preventing oxidation and moisture absorption caused by air exposure, and subsequent reduction in the first-efficiency of the battery.

[0055] In step S300, in an intermittent operation mode, intermediate products in the temporary storage module are received in batches through multiple parallel intermittent reaction devices and a coating reaction is performed to obtain coated materials.

[0056] Step S300 further includes the following sub-steps: Step S301 involves controlling multiple parallel intermittent reaction devices to alternately perform feeding, reaction, and discharging operations. The control module monitors the operating stage of each device in real time and generates staggered scheduling instructions. For example, when one device is in the isothermal reaction stage, another device simultaneously feeds or cools and discharges.

[0057] Step S302: In response to receiving a material request signal from the target batch reactor, the intermediate product in the temporary storage module is fed to the target batch reactor in a single batch. The material request signal is a readiness request actively issued by the target equipment after completing the previous batch discharge, furnace cleaning, and meeting the preset feeding conditions. The feeding action is only triggered when this signal is received and the target equipment is confirmed to be in an idle state. This avoids unnecessary waiting or heat loss of materials at the reactor inlet.

[0058] Step S400: Obtain the material testing results for the current batch of coated material. The testing node is set up during the material's flow from the reaction zone to the diversion node, and key physicochemical indicators such as carbon content, particle size distribution, and specific surface area are collected in real time through online sampling or full-volume scanning.

[0059] Step S500: Based on the matching relationship between the material detection results and preset qualification conditions, the coated material is diverted to a qualified path or an unqualified path. When the detection results fall within the range of preset qualification conditions (such as carbon content, particle size, and the joint threshold matrix of BET), the system automatically switches to the qualified path; conversely, if any key indicator exceeds the allowable range, the system immediately switches to the unqualified path, forcibly guiding the batch of material to the isolation collection area. This ensures the repeatability of the production process and the consistency of the final product, placing the quality judgment point before packaging, and achieving immediate physical isolation of unqualified products. Example 7:

[0060] In one implementation, in response to receiving a material request signal from the target batch reactor, the intermediate product in the temporary storage module is fed to the target batch reactor in a single batch. This includes receiving the material request signal from the target batch reactor after the target batch reactor has completed the discharge of the previous batch and the furnace environment has reached the preset feeding conditions. The preset feeding conditions include at least the following: the previous batch of material has been completely discharged and the furnace cleaning procedure has been completed; the furnace temperature has risen or stabilized to the preset feeding temperature threshold; the nitrogen micro-positive pressure in the furnace has reached the set protection value; and the exhaust gas emission system is operating normally. Only when all the above conditions are met simultaneously will the target batch reactor send a valid material request signal to the control module.

[0061] If feeding is triggered without "discharge completion" verification, it may lead to mixing of new and old batches of materials, compromising the independence of discrete batches. If feeding is allowed before "furnace temperature stabilizes," the cold or overheated furnace will cause thermal shock to the newly entered intermediates, resulting in abnormal carbon source decomposition rates and consequently uneven coating thickness or structural defects. If the feeding valve is opened before "atmosphere meets standards," external air may enter, causing highly reactive silicon-precipitated intermediates to oxidize instantly at high temperatures, severely affecting the electrochemical performance of the final product. This approach effectively eliminates the risk of batch quality incidents caused by insufficient equipment preparation at the source.

[0062] Furthermore, the discharge valve at the bottom of the control temporary storage module is fully opened, emptying the pre-stored single batch of intermediate products into the target batch reactor within a preset time. The preset time refers to the maximum allowable feeding time pre-calibrated based on material flowability, pipeline diameter, and reactor volume. The control module drives the discharge valve to instantly switch to the fully open state, utilizing gravitational potential energy or auxiliary pneumatic conveying pressure to allow the expected batch of material in the temporary storage module to pour down at maximum flow rate until the discharge confirmation signal is received and the valve is closed.

[0063] It significantly reduces non-reaction time, allowing the reactor to remain in an effective heating and isothermal reaction state for more time per unit cycle, thereby directly improving the effective volume utilization rate of a single unit and the overall production capacity of the line. It also reduces heat loss and atmosphere disturbance during the feeding process, while ensuring absolute consistency of initial material conditions for each batch. Example 8:

[0064] As one implementation method, the reaction environment is maintained under a slightly positive nitrogen pressure protection state during the deposition and coating processes. Through the coordinated closed-loop control of a precision pressure regulating valve and a tail gas emission valve, the gauge pressure inside the reactor is stably maintained within a specific slightly positive pressure range. The internal and external pressure difference forms a continuously outward inert airflow barrier, effectively preventing oxygen and water vapor from the external air from permeating back into the high-temperature reaction zone through dynamic sealing gaps. This avoids oxidation of the highly active nano-silicon particles and structural defects in the carbon coating layer, ensuring the electrochemical activity of the material. For carbon coating processes using flammable and explosive carbon source gases such as acetylene and methane, this pressure range, combined with the continuous introduction of high-purity nitrogen, can strictly dilute and control the concentration of combustible gases inside the furnace beyond the explosion limits, eliminating the risk of combustion and explosion at the source. The value of the slightly positive pressure is not arbitrarily set but is based on a comprehensive consideration of safety margin and energy consumption balance. The principle of maintaining the slightly positive nitrogen pressure protection state is to simultaneously achieve anti-oxidation and explosion-proof functions through precise pressure field control, ensuring batch-to-batch quality consistency and production process safety. Nitrogen micro-positive pressure refers to the stable maintenance of the gauge pressure inside the reaction chamber and sealed silo at 50Pa-500Pa, preferably 100Pa-300Pa. This pressure range can both form an inert gas barrier through the outward pressure difference, preventing external oxygen and moisture from penetrating into the equipment and avoiding oxidation and moisture absorption of silicon-carbon materials; and also avoid excessive pressure leading to increased powder entrainment in the exhaust gas, material loss, and increased exhaust gas treatment load.

[0065] As one implementation method, after diverting the coating material to a qualified path, the production process also includes post-processing operations such as mixing, sieving, and demagnetizing the coating material diverted to the qualified path. The first mixing operation typically uses a high-efficiency plow mixer or ribbon mixer to deagglomerate and homogenize the carbon-coated material using mechanical shearing force. Since the material may produce soft agglomerations during the high-temperature reaction process, if sieving is performed directly, the agglomerates will be mistakenly identified as large particles and rejected, resulting in yield loss; therefore, mixing must be performed first to restore the material to a loose powder state. The next sieving operation, for example, using an ultrasonic vibrating screen, uses high-frequency vibration energy to accurately remove hard agglomerates or foreign objects that exceed the particle size limit, ensuring that the finished product particle size distribution (D50) strictly falls within the target window, preventing large particles from piercing the separator and causing short circuit risks during the battery electrode coating process. The final demagnetizing operation is arranged at the end of the process, for example, using a multi-stage permanent magnet separator or electromagnetic separator, to capture trace amounts of wear iron filings or magnetic impurities accumulated throughout the process. This ensures the purity and application safety of delivered products, effectively improving the yield rate and long-term reliability of batteries.

[0066] In one implementation, the coating material that has undergone post-processing is mixed with graphite in a set ratio and then packaged. The set ratio is the mass ratio of the coating material to the graphite, and the mass ratio ranges from 5:95 to 30:70.

[0067] In one embodiment, the production process further includes: During the isothermal stage of the coating reaction, the residual concentration of carbon source gas in the reaction tail gas is detected online, and the cumulative carbon source conversion amount is calculated in real time based on the difference between the residual concentration of the carbon source gas and the flow rate of the carbon source gas, which serves as an online quantitative indicator characterizing the coating process; the cumulative carbon source conversion amount and the target carbon content of the coating material are pre-calibrated to correspond. When the cumulative conversion amount of carbon source reaches the preset deposition target amount corresponding to the target carbon content, the coating endpoint of the current batch is determined and the isothermal stage is ended, instead of ending the coating reaction according to a fixed isothermal duration. During the isothermal phase, the flow rate of the carbon source gas is dynamically adjusted based on the decay trend of the carbon source conversion rate calculated from the residual concentration of the carbon source gas: when the decrease in the carbon source conversion rate per unit time exceeds a preset decay threshold, the flow rate of the carbon source gas is reduced according to a preset gradient. Before entering the cooling stage after the isothermal stage ends, a gradient switching of the carbon source gas and nitrogen is performed: first, the supply of the carbon source gas is cut off, and then the atmosphere inside the furnace is purged with nitrogen until the residual concentration of the carbon source gas in the reaction tail gas drops below the preset safe concentration, and then the cooling stage begins. The actual cumulative carbon source conversion amount achieved in the current batch, the determined coating endpoint time, and the material detection results of the current batch are associated and registered. Based on the deviation between the actual cumulative carbon source conversion amount of the current batch and the preset deposition target amount, the preset deposition target amount and / or the initial parameters of the isothermal stage in the batch program are corrected for the next batch.

[0068] The working principle and beneficial effects are as follows: It facilitates accurate calculation of the cumulative carbon source conversion. When the cumulative carbon source conversion reaches the preset deposition target amount corresponding to the target carbon content, the coating endpoint for the current batch is determined, and the isothermal stage ends, replacing the fixed isothermal duration for ending the coating reaction. The decrease in the carbon source conversion rate per unit time indicates the conversion rate decay. This response ensures that the carbon source feed rate always matches the actual deposition capacity in the furnace, reducing unreacted carbon source emissions, improving raw material utilization, and simultaneously reducing the load on the exhaust gas treatment system and the risk of combustible gas emissions. Before entering the cooling stage after the isothermal stage ends, the following steps are performed: Gradient switching between carbon source gas and nitrogen: First, the supply of the carbon source gas is cut off, then the atmosphere inside the furnace is purged with nitrogen until the residual concentration of the carbon source gas in the reaction tail gas drops below the preset safe concentration, and then the cooling stage begins; The actual cumulative carbon source conversion amount achieved in the current batch, the determined coating endpoint time, and the material detection results of the current batch are associated and registered, and based on the deviation between the actual cumulative carbon source conversion amount of the current batch and the preset deposition target amount, the preset deposition target amount and / or the initial parameters of the isothermal stage in the batch program are corrected to improve the accuracy of the correction.

[0069] Combination such as Figures 2 to 5 Description of silicon-carbon production process: like Figure 2 As shown, the process includes: Material preparation: Material is placed into a temporary storage bin using ton bags. The material in the temporary storage bin is then added to the feeding tank via a time-controlled process. Fluidized bed feeding stage: Nitrogen source 1 pressurizes the feeding tank. Using feeder 3, the material is transported to the receiving bin via pipeline. Nitrogen is filtered and discharged outdoors through pipeline, and the material settles in the receiving bin. The material in the receiving bin is fed to the temporary storage bin via screw feeder 4. When the fluidized bed issues a material request signal, all material in the temporary storage bin is discharged into the fluidized bed feed bin 2. A metering bin 6 is also installed before entering the fluidized bed feed bin 2.

[0070] like Figure 3 and Figure 4 As shown, this is the feeding stage of the rotary kiln: the material from the fluidized bed reaction enters the feeding tank, which is pressurized with nitrogen. The material is then transported through pipelines to receiving chamber 5. The nitrogen is filtered and discharged outdoors through pipelines, while the material settles in the receiving chamber. Two receiving chambers with different functions are set up here. If the material from the fluidized bed is unqualified, it enters the receiving chamber via the abnormal material receiving channel 7 and then enters the simple packaging machine 9. If the material from the fluidized bed is qualified, it enters the receiving chamber via the normal material receiving channel 8 and then enters the feeding tank. The feeding tank is pressurized with nitrogen, and the material is transported through pipelines to the receiving chamber. The nitrogen is filtered and discharged outdoors through pipelines, while the material settles in the receiving chamber. The material in the receiving chamber is then fed to a temporary storage chamber via a screw feeder. When the rotary kiln issues a material request signal, all the material in the temporary storage chamber is transported to the rotary kiln via a diaphragm pump.

[0071] like Figure 5 As shown, the process includes: mixing, screening, demagnetization, and packaging stages: The material reacting in the rotary kiln enters the sending tank, which is pressurized by nitrogen. The material is then transported through pipelines to the receiving silo. The nitrogen is discharged outdoors through a filter and pipelines. The material settles in the receiving silo. The material in the receiving silo then passes through a mixer, an ultrasonic screen, a primary iron remover, a secondary iron remover, and a secondary ultrasonic screen by its own weight before entering a temporary storage silo. The material in the temporary storage silo can be directly packaged and sold, or it can be used as a raw material for silicon carbide materials. Silicon carbide batch mixing and packaging stage: The unpackaged material (raw material) from the previous stage is transported to one receiving silo under negative pressure. Graphite is fed into a ton bag or transported under negative pressure to another receiving silo. The negative pressure source is a Roots blower 10, which passes through an online filter 11. The material from both receiving silos is fed to a mixer via a screw precision feeder. The mixed material enters the temporary storage silo through a rotary valve and an ultrasonic screen. The material in the temporary storage silo is packaged and sold.

[0072] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A fully automated production line for silicon-carbon anode materials, characterized in that, It includes a first processing module, a temporary storage module and a second processing module arranged sequentially along the material flow direction, as well as a diversion module and a control module located downstream of the discharge end of the second processing module; The first processing module is configured to perform a deposition process on a carbon matrix in a continuous or semi-continuous operation mode to generate an intermediate product; The second processing module includes multiple parallel batch reaction devices, configured to receive the intermediate product in batches in a batch operation mode and perform a coating reaction to obtain coated material; The traffic splitting module includes qualified paths and unqualified paths; The control module is configured to: respond to receiving a material request signal from the target batch reaction device, control the temporary storage module to supply material to the target batch reaction device in a single batch, and control the multiple parallel batch reaction devices to alternately perform feeding, reaction, and discharging operations; acquire the material detection results of the current batch of coating material; based on the matching relationship between the material detection results and preset qualification conditions, control the diversion module to guide the coating material to the qualified path or the unqualified path; the target batch reaction device is the device in the idle state among the multiple parallel batch reaction devices; The control module is also configured to uniquely associate and register the material test results, production timestamp, equipment number of the batch reaction equipment performing the coating reaction, and diversion status of each batch, generating a batch quality data chain; The system acquires real-time yield data from the first processing module and current material level data from the temporary storage module. Based on the real-time yield data and the batch stage progress of each batch reaction device, it predicts the evolution trajectory of the material level in the temporary storage module within a preset prediction time domain. The evolution trajectory is subject to both upper and lower material level constraints. The lower material level constraint is that at least one complete batch of the intermediate product is maintained in the temporary storage module, and the upper material level constraint is the rated capacity of the temporary storage module. Using the evolution trajectory and the current batch stage and progress of each batch reactor as input, staggered scheduling instructions are generated on a rolling basis according to a preset rolling cycle. The staggered scheduling instructions are used to determine the next approved target batch reactor and its feeding time, and the determination of the feeding time simultaneously meets the following three constraints: process staggered constraints where at most one batch reactor is in the feeding or discharging state at the same time; heat load staggered constraints where the high-power heating periods of each batch reactor are staggered and the predicted peak value of the plant's power load does not exceed the preset demand limit; and phase arrangement constraints where the temperature difference between the corresponding temperature zones of the batch reactor in the constant temperature zone and the adjacent batch reactor does not exceed the preset thermal coupling threshold. The phase arrangement constraints are achieved by arranging the time phase difference between the batch programs of each batch reactor. In response to the predicted evolution trajectory reaching the upper limit constraint of the material level within the predicted time domain, the intermittent reaction equipment in the feeding state is triggered in advance to issue a material request signal, or the isothermal stage duration of the current batch is extended; in response to the predicted evolution trajectory reaching the lower limit constraint of the material level, the feeding to the intermittent reaction equipment in the idle state is delayed, and a load reduction operation request is sent to the first processing module. Based on the batch quality data chain, the historical batch pass rate of each batch reaction equipment within the preset statistical period is statistically analyzed, and the batch reaction equipment with the higher historical batch pass rate is given a higher scheduling priority.

2. The fully automated production line for silicon-carbon anode materials according to claim 1, characterized in that, The temporary storage module is configured to accommodate at least one complete batch of the intermediate and maintain a protective atmosphere; The control module controls the temporary storage module to supply materials to the target batch reaction equipment in a single batch, including: in response to the material request signal, controlling the temporary storage module to deliver the pre-stored single batch of intermediate products to the target batch reaction equipment in one go.

3. The fully automated production line for silicon-carbon anode materials according to claim 2, characterized in that, The temporary storage module includes a sealed silo and a weighing and metering device; The sealed silo is configured to contain the intermediate product and maintain the protective atmosphere; The weighing and metering device is configured to estimate the weight of the material in a single batch before the single batch feeding. The control module controls the temporary storage module to deliver the pre-stored single batch of intermediate products to the target batch reaction equipment in one go, including: controlling the discharge valve at the bottom of the sealed silo to fully open, so as to discharge the intermediate products corresponding to the expected weight of the single batch of materials to the target batch reaction equipment.

4. The fully automated production line for silicon-carbon anode materials according to claim 1, characterized in that, The second processing module also includes a distribution valve assembly; The feed end of each of the intermittent reaction devices is connected to the discharge end of the temporary storage module through the distribution valve group; The control module controls the multiple parallel intermittent reaction devices to alternately perform feeding, reaction and discharging operations, including: generating staggered scheduling instructions based on the operating status of each intermittent reaction device, and controlling the distribution valve group to selectively open the corresponding feeding path based on the staggered scheduling instructions.

5. The fully automated production line for silicon-carbon anode materials according to claim 4, characterized in that, The batch reaction equipment is a batch rotary kiln, which is equipped with a nitrogen protection component and a temperature control component. The nitrogen protection component is configured to maintain a nitrogen protective atmosphere during the coating reaction; The temperature control component is configured to execute multi-segment temperature curve control according to a preset batch program. The multi-segment temperature curve control includes a heating segment, a constant temperature segment, and a cooling segment. Thermal coupling between the intermittent rotary kilns is suppressed through the kiln body spacing and insulation layer.

6. The fully automated production line for silicon-carbon anode materials according to claim 1, characterized in that, The diversion module includes a normal material receiving channel and an abnormal material receiving channel, and the inlets of the normal material receiving channel and the abnormal material receiving channel are both connected to the outlet of the second processing module. The fully automated production line also includes an online detection module, configured to sample and test the coating material to generate the material detection results; The control module, based on the matching relationship between the material detection result and the preset qualification conditions, controls the diversion module to guide the coated material to the qualified path or the unqualified path, including: in response to the material detection result meeting the preset qualification conditions, controlling the coated material to enter the normal material receiving channel; in response to the material detection result not meeting the preset qualification conditions, controlling the coated material to enter the abnormal material receiving channel; the preset qualification conditions include a joint judgment matrix of carbon content threshold range, particle size distribution threshold range, and specific surface area threshold range.

7. The fully automated production line for silicon-carbon anode materials according to claim 6, characterized in that, The abnormal material receiving channel is connected to an independent collection device for isolating and collecting the unqualified coating material; The normal material receiving channel is connected to the post-processing module, and is used to transport the coating material diverted to the normal material receiving channel to the post-processing module; The post-processing module includes a mixing device, a screening device, and a demagnetizing device connected sequentially along the material flow direction. The fully automated production line also includes a batch mixing and packaging module, configured to receive the coating material processed by the post-processing module, and mix and package the processed coating material with graphite according to a set ratio.

8. A production process for a fully automated production line of silicon-carbon anode material as described in any one of claims 1 to 7, characterized in that, include: Deposition processes are performed on carbon-based substrates in continuous or semi-continuous operation modes to generate intermediate products; The intermediate product is temporarily stored in the temporary storage module; In an intermittent operation mode, the intermediate products in the temporary storage module are received in batches by multiple parallel intermittent reaction devices and a coating reaction is performed to obtain coated materials; Obtain the material testing results for the current batch of the coating material; Based on the matching relationship between the material detection results and the preset qualification conditions, the coating material is diverted to the qualified path or the unqualified path; The step of receiving the intermediate product in batches and performing the coating reaction includes: in response to receiving a material request signal from the target batch reaction device, feeding the intermediate product in the temporary storage module to the target batch reaction device in a single batch, and controlling the multiple batch reaction devices connected in parallel to alternately perform feeding, reaction and discharging operations; the target batch reaction device is the device in an idle state among the multiple batch reaction devices connected in parallel.

9. The production process according to claim 8, characterized in that, During the deposition process and the coating reaction, the reaction environment is maintained under a nitrogen micro-positive pressure protection state; After diverting the coating material to the qualified path, the production process further includes: The coated material diverted to the qualified path undergoes sequential post-processing operations of mixing, sieving, and demagnetization. The coating material that has undergone the post-processing operation is mixed with graphite in a set ratio and then packaged.

10. The production process according to claim 9, characterized in that, The production process also includes: During the isothermal stage of the coating reaction, the residual concentration of carbon source gas in the reaction tail gas is detected online, and the cumulative carbon source conversion amount is calculated in real time based on the difference between the residual concentration of the carbon source gas and the flow rate of the carbon source gas, which serves as an online quantitative indicator characterizing the coating process; the cumulative carbon source conversion amount and the target carbon content of the coating material are pre-calibrated to correspond. When the cumulative conversion amount of carbon source reaches the preset deposition target amount corresponding to the target carbon content, the coating endpoint of the current batch is determined and the isothermal stage is ended, instead of ending the coating reaction according to a fixed isothermal duration. During the isothermal phase, the flow rate of the carbon source gas is dynamically adjusted based on the decay trend of the carbon source conversion rate calculated from the residual concentration of the carbon source gas: when the decrease in the carbon source conversion rate per unit time exceeds a preset decay threshold, the flow rate of the carbon source gas is reduced according to a preset gradient. Before entering the cooling stage after the isothermal stage ends, a gradient switching of the carbon source gas and nitrogen is performed: first, the supply of the carbon source gas is cut off, and then the atmosphere inside the furnace is purged with nitrogen until the residual concentration of the carbon source gas in the reaction tail gas drops below the preset safe concentration, and then the cooling stage begins. The actual cumulative carbon source conversion amount achieved in the current batch, the determined coating endpoint time, and the material detection results of the current batch are associated and registered. Based on the deviation between the actual cumulative carbon source conversion amount of the current batch and the preset deposition target amount, the preset deposition target amount and / or the initial parameters of the isothermal stage in the batch program are corrected for the next batch.

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