Battery degassing and packaging method

Abstract

The invention discloses a battery degassing and packaging method, relates to the field of battery manufacturing, and is applied to battery degassing and packaging equipment which comprises a turntable, a rotary driving mechanism and a plurality of air exhaust and packaging mechanisms arranged on the turntable. The method comprises the following steps: feeding a battery to be packaged to a clamp platform; controlling a pre-pressing assembly to pre-press the main body part of the battery according to a preset pre-pressing control strategy; the air exhaust assembly is controlled to vacuumize the operation cavity according to a preset air exhaust control strategy; controlling a rotation driving mechanism to drive a turntable to rotate according to a preset centrifugal control strategy; controlling a puncturing assembly to puncture an air bag part of the battery; and controlling the heat sealing assembly to perform heat sealing on the battery. According to the method, the actual operation parameters of each working procedure are collected in real time, and closed-loop control is performed according to the preset control strategy, so that accurate adjustment of the prepressing displacement, the vacuumizing air pressure, the centrifugal rotating speed and the heat sealing pressure and temperature is realized, the stability and the yield of battery packaging are effectively improved, and meanwhile, manual intervention is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of battery manufacturing, in particular to a method for degassing and packaging of a battery. BACKGROUND

[0002] Soft package battery is a kind of lithium ion battery with aluminum plastic film as the shell packaging. Due to its light weight, high energy density, customizable shape and other characteristics, it has been widely used in consumer electronics, power batteries and energy storage batteries. In the manufacturing process of soft package battery, secondary packaging (referred to as "two sealing") is a crucial process, which directly affects the sealing performance, electrolyte retention and service life of the battery. In the secondary packaging process of soft package battery, the following key problems need to be solved: first, how to ensure the uniform distribution and full infiltration of the electrolyte inside the battery; second, how to effectively discharge the gas inside the battery; third, how to ensure the airtightness after packaging; fourth, how to improve the production efficiency and product consistency.

[0003] At present, the soft package battery packaging equipment in the industry still has many deficiencies in actual application. For example, in the packaging process of traditional packaging equipment, the control of various process parameters usually depends on manual adjustment according to experience. This adjustment method is not only cumbersome, but also difficult to ensure consistency between batches; secondly, with the change of equipment operating conditions, the key operating parameters of the equipment often appear unstable during actual operation, affecting the packaging quality. In addition, the traditional packaging equipment lacks self-adaptive adjustment capability for different specifications of batteries and different working conditions, and cannot automatically adjust the process parameters according to the specific situation of the battery. This leads to uneven packaging quality of the battery in batch production, affecting the consistency and reliability of the product.

[0004] In actual production, different batches of battery raw materials, production environment conditions and equipment states will affect the packaging process, and real-time adjustment of packaging parameters is needed. However, traditional packaging equipment generally lacks the ability of real-time monitoring and closed-loop control, and operators need to constantly try and adjust based on experience, which is time-consuming and labor-intensive and difficult to ensure the stability of product quality. Therefore, there is an urgent need for a method for degassing and packaging of a battery that can realize real-time monitoring and closed-loop control of key process parameters for different specifications of batteries and different working conditions, in order to improve the precision and consistency of battery packaging, and thus improve the overall performance and reliability of the battery. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a method for degassing and packaging of a soft package battery, which can realize real-time monitoring and closed-loop control of key process parameters.

[0006] According to the battery degassing packaging method, the battery degassing packaging device is applied, the battery degassing packaging device comprises a rotating disc, a rotating driving mechanism and a plurality of gas extraction packaging mechanisms arranged on the rotating disc, the gas extraction packaging mechanism is provided with an openable and closable working cavity, and the working cavity is provided with a gas extraction assembly, a heat sealing assembly, a piercing assembly and a pre-pressing assembly; the battery degassing packaging method comprises the following steps:

[0007] loading the battery to be packaged into the clamp platform in the working cavity;

[0008] controlling the pressing plate of the pre-pressing assembly to descend to pre-press the battery body part of the battery according to a preset pre-pressing control strategy;

[0009] controlling the gas extraction assembly to extract vacuum according to a preset gas extraction control strategy;

[0010] controlling the rotating driving mechanism to drive the rotating disc to rotate according to a preset centrifugal control strategy;

[0011] controlling the piercing assembly to pierce the gas bag part of the battery;

[0012] controlling the heat sealing assembly to heat seal the battery.

[0013] According to the battery degassing packaging method, at least the following beneficial effects are obtained: according to the battery degassing packaging method, the rotating disc, the rotating driving mechanism and the plurality of gas extraction packaging mechanisms are integrated in the battery degassing packaging device, and the gas extraction assembly, the heat sealing assembly, the piercing assembly and the pre-pressing assembly are arranged in the working cavity, so that the efficient automation of the battery packaging process is realized. First, the battery is loaded, then the battery body part is pre-pressed according to the preset pre-pressing control strategy, which can effectively fix the battery and reshape the battery, avoiding the deformation problem of the battery in the gas extraction packaging process; then the working cavity is extracted according to the preset gas extraction control strategy, to ensure a good vacuum environment; then the rotating disc is driven to rotate according to the preset centrifugal control strategy, so that the electrolyte in the battery and the battery body material are more fully mixed through the centrifugal effect, and the separation of gas and liquid is promoted, creating favorable conditions for subsequent degassing; then the piercing assembly pierces the gas bag part of the battery, and the gas is efficiently discharged in the aforementioned vacuum environment; finally, the heat sealing assembly heat seals the battery, completing the packaging process. In the whole process, each process is accurately controlled by using the preset control strategy, replacing the traditional manual experience adjustment mode, significantly improving the precision, consistency and reliability of the battery packaging. The method can adapt to different specifications of batteries and different working conditions, effectively cope with the influence of changes in equipment operating state, ensure the stability of packaging quality, and improve the overall performance and service life of the battery, while improving the production efficiency, reducing the cost of manual debugging and the rate of defective products.

[0014] According to some embodiments of the present application, the pre-pressing assembly comprises a pressing plate, a pre-pressing driver and a pre-pressing pressure sensor, the pre-pressing pressure sensor is arranged on the jig platform or the pressing plate; the control of the pre-pressing assembly to lower the pressing plate to pre-press the battery body part of the battery according to the preset pre-pressing control strategy comprises:

[0015] Obtaining a preset pre-pressing starting position and a preset displacement-pressure threshold value;

[0016] Control the pre-pressing driver to drive the pressing plate to the pre-pressing starting position;

[0017] Control the pre-pressing pressure sensor to collect the actual pre-pressing pressure information of the pressing plate in real time;

[0018] According to the actual pre-pressing pressure information and the displacement-pressure threshold value, the driving displacement of the pre-pressing driver is adjusted in real time.

[0019] According to some embodiments of the present application, the rotating drive mechanism comprises a rotating drive and a rotating speed sensor; the control of the rotating drive mechanism to drive the rotating disc to rotate according to the preset centrifugal control strategy comprises:

[0020] Obtaining a preset centrifugal time information and a preset standard rotating speed information;

[0021] Control the rotating drive to drive the rotating disc to rotate;

[0022] Control the rotating speed sensor to collect the actual rotating speed information of the rotating disc in real time;

[0023] According to the actual rotating speed information, the centrifugal time information and the standard rotating speed information, the output rotating speed of the rotating drive is adjusted in real time.

[0024] According to some embodiments of the present application, the air extraction assembly comprises a negative pressure source, a multi-section control valve and an air pressure sensor; the control of the air extraction assembly to vacuumize the working cavity according to the preset air extraction control strategy comprises:

[0025] Obtaining a preset time period air pressure information;

[0026] Control the multi-section control valve to connect the negative pressure source and the working cavity;

[0027] Control the air pressure sensor to collect the actual air pressure information in the working cavity in real time;

[0028] According to the time period-air pressure information and the actual air pressure information, the multi-section control valve is controlled to adjust the air pressure in the working cavity in multiple sections.

[0029] According to some embodiments of the present application, the heat sealing assembly comprises a heat sealing drive, a heat sealing press block, a heating module, a heat sealing pressure sensor and a heat sealing temperature sensor; the control of the heat sealing assembly to heat seal the battery comprises:

[0030] acquiring a preset standard heat sealing temperature and a standard heat sealing pressure;

[0031] controlling the heat sealing pressure sensor to collect an actual heat sealing pressure generated by the heat sealing press block on the battery in real time;

[0032] controlling the heat sealing temperature sensor to collect an actual heat sealing temperature of the heat sealing press block in real time;

[0033] adjusting the power of the heating module in real time according to the standard heat sealing temperature and the actual heat sealing temperature;

[0034] adjusting the output pressure of the heat sealing drive in real time according to the standard heat sealing pressure and the actual heat sealing pressure.

[0035] According to some embodiments of the present application, the battery degassing packaging device further comprises a feeding mechanism, and a first locking mechanism is further arranged on the turntable; the feeding of the battery to be packaged to the clamp platform of the working cavity comprises:

[0036] controlling the first locking mechanism to work to fix the position of the turntable;

[0037] controlling the feeding mechanism to feed the battery to the clamp platform of the corresponding degassing packaging mechanism;

[0038] controlling the first locking mechanism to be unlocked, and controlling the rotary drive mechanism to rotate by indexing to move another degassing packaging mechanism to a feeding position of the feeding mechanism;

[0039] repeating the above steps until all the degassing packaging mechanisms complete the feeding.

[0040] According to some embodiments of the present application, the degassing packaging mechanism comprises a lower cavity seat, a middle frame body, a top plate, an opening and closing drive and a second locking mechanism, and the clamp platform is arranged in the lower cavity seat; the feeding of the battery to the clamp platform of the corresponding degassing packaging mechanism by the feeding mechanism comprises:

[0041] controlling the opening and closing drive to drive the middle frame body to rise to a preset cavity opening position;

[0042] controlling the second locking mechanism to fix the position of the middle frame body to avoid the middle frame body from falling during the feeding process;

[0043] controlling the feeding mechanism to feed the battery to the clamp platform;

[0044] controlling the opening and closing driving member to drive the middle frame body to descend, so that the lower cavity seat, the middle frame body and the top plate are closed to close the working cavity;

[0045] controlling the second locking mechanism to fix the position of the middle frame body to avoid the middle frame body from being opened accidentally.

[0046] According to some embodiments of the present application, a plurality of suction holes are arranged on the clamp platform, and a negative pressure detection port is arranged on each suction hole; the control of the feeding mechanism to feed the battery to the clamp platform of the corresponding air extraction packaging mechanism further comprises the following steps:

[0047] controlling the suction hole to adsorb the battery;

[0048] acquiring negative pressure information of each negative pressure detection port;

[0049] determining whether the battery is successfully fed according to the negative pressure information.

[0050] According to some embodiments of the present application, the battery outgassing packaging device further comprises a vacuum breaking assembly;

[0051] the control of the heat sealing assembly to heat seal the battery further comprises the following steps:

[0052] controlling the vacuum breaking assembly to work to release the negative pressure state in the working cavity;

[0053] controlling the working cavity to open;

[0054] controlling the pressing plate of the pre-pressing assembly to rise.

[0055] According to some embodiments of the present application, the control of the heat sealing assembly to heat seal the battery further comprises the following steps:

[0056] acquiring thickness information of the main body part of the battery;

[0057] acquiring weight information of the battery;

[0058] acquiring image information of the appearance of the battery;

[0059] determining whether the packaging of the battery is qualified according to the thickness information, the weight information and the image information based on a preset determination standard. BRIEF DESCRIPTION OF DRAWINGS

[0060] The present application will be further described below in combination with the drawings and embodiments, in which:

[0061] Figure 1 a structural schematic view of the battery outgassing packaging device according to the embodiments of the present application;

[0062] Figure 2 Structure diagram of the device for removing gas from the battery according to another embodiment of the present application

[0063] Figure 3 Structure diagram of the device for removing gas from the battery according to another embodiment of the present application

[0064] Figure 4 Structure diagram of the device for removing gas from the battery according to another embodiment of the present application

[0065] Figure 5 Main flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0066] Figure 6 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 5 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0067] Figure 7 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 5 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0068] Figure 8 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 5 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0069] Figure 9 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 5 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0070] Figure 10 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 5 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0071] Figure 11 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 10 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0072] Figure 12 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 10 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0073] Figure 13 Flow chart of the method for removing gas from the battery according to another embodiment of the present application Figure 1 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0074] Figure 14 Structure diagram of the device for removing gas from the battery according to another embodiment of the present application Figure 1 Flow chart of the method for removing gas from the battery according to another embodiment of the present application

[0075] Reference signs:

[0076] Rotating disc 100; rotating driving mechanism 200; air extraction packaging mechanism 300; clamp platform 311; lower cavity seat 312; middle frame body 313; top plate 314; opening and closing driving piece 315; pre-pressing assembly 320; pressing plate 321; pre-pressing driving piece 322; heat sealing assembly 340; heat sealing driving piece 341; heat sealing pressing block 342; piercing assembly 350. DETAILED DESCRIPTION

[0077] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0078] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the purpose of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the present application. The device or element indicated is not necessarily constructed and operated in a particular orientation.

[0079] In the description of the present application, if the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0080] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0081] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0082] The embodiment of the electrically gas-free packaging method is applied to an electrically gas-free packaging device, such as Figures 1 to 4As shown, the embodiment battery degassing packaging device comprises a rack, a rotating disc 100 arranged on the rack, a rotating driving mechanism 200 for driving the rotating disc 100 to rotate, and a plurality of degassing packaging mechanisms 300 arranged uniformly along the circumference of the rotating disc 100. The embodiment degassing packaging mechanism 300 comprises a lower cavity seat 312, a middle frame body 313, and a top plate 314, which together form an openable and closable working cavity. The lower cavity seat 312 is fixed on the rotating disc 100, and a clamp platform 311 is arranged on the lower cavity seat 312 for placing the battery to be packaged. The working cavity is provided with a degassing assembly, a heat sealing assembly 340, a piercing assembly 350, and a pre-pressing assembly 320. The battery packaged by the embodiment battery degassing packaging device can be divided into a battery body part and a gas bag part. The battery body part contains an electrode assembly and an electrolyte, and the gas bag part is in communication with the battery body part. During the degassing packaging process, the gas in the battery body part needs to be discharged, while the loss of the electrolyte in the battery body part is avoided as much as possible. The two-seal area between the battery body part and the gas bag part is heat-pressed (two-seal) to seal the battery body part, thereby obtaining a battery semi-finished product.

[0083] The embodiment battery degassing packaging method is based on the above-mentioned battery degassing packaging device, and specifically comprises but is not limited to steps S100 to S600:

[0084] S100, loading the battery to be packaged onto the clamp platform 311 in the working cavity;

[0085] S200, controlling the pressure plate 321 of the pre-pressing assembly 320 to descend to pre-press the battery body part of the battery according to a pre-set pre-pressing control strategy;

[0086] S300, controlling the degassing assembly to perform vacuumization on the working cavity according to a pre-set degassing control strategy;

[0087] S400, controlling the rotating driving mechanism 200 to drive the rotating disc 100 to rotate according to a pre-set centrifugal control strategy;

[0088] S500, controlling the piercing assembly 350 to pierce the gas bag part of the battery;

[0089] S600, controlling the heat sealing assembly 340 to heat seal the battery.

[0090] In step S100, the battery to be packaged is loaded onto the clamp platform 311 in the working cavity. In this step, first open the working cavity, then place the battery on the clamp platform 311, wherein the main body part of the battery is away from the rotation center of the turntable 100, the air bag part of the battery is close to the rotation center of the turntable 100, and the bayonet of the piercing assembly 350 of the embodiment vacuum packaging mechanism 300 points to the air bag part. Based on such a layout, when the turntable 100 rotates, the gas is moved to the rotation center by the centrifugal force difference and is discharged by the vacuum device, while the electrolyte moves outward due to its greater density, avoiding the electrolyte from being taken out during vacuuming, thereby improving the packaging quality.

[0091] In step S200, the pressure plate 321 of the pre-pressing assembly 320 is controlled to descend to pre-press the battery main body part of the battery according to a preset pre-pressing control strategy. The pre-pressing process can fix the battery to prevent displacement during subsequent operations, and at the same time, shape the battery to ensure the flatness and thickness uniformity of the battery. Through the preset pre-pressing control strategy, the pre-pressing parameters can be adjusted according to different specifications of the battery, while ensuring that the actual pre-pressing parameters remain stable during equipment operation, ensuring the consistency of the pre-pressing effect.

[0092] In step S300, the vacuum assembly is controlled to perform vacuuming on the working cavity according to a preset vacuuming control strategy. The working cavity needs to be closed before vacuuming, and the vacuuming process creates necessary environmental conditions for subsequent piercing and heat sealing to prevent external air from entering the battery. The preset vacuuming control strategy can monitor and control the air pressure change process in the working cavity in real time according to the battery specifications, process requirements and operation timing, to ensure that the vacuuming effect meets the requirements.

[0093] In step S400, the rotary drive mechanism 200 is controlled to drive the turntable 100 to rotate according to a preset centrifugal control strategy. The rotation of the turntable 100 generates centrifugal force, which makes the electrolyte in the battery more fully mixed with the battery body material, and at the same time promotes the separation of gas and liquid, facilitating the discharge of gas during subsequent piercing of the air bag. The preset centrifugal control strategy can monitor and control the speed change process of the turntable 100 in real time according to the battery specifications, process requirements and operation timing, to ensure the optimization of the centrifugal effect.

[0094] In steps S500 and S600, the piercing assembly 350 is controlled to pierce the air bag part of the battery 500. In the negative pressure environment of the working cavity, after the air bag part is pierced, the internal gas is extracted, preparing for subsequent heat sealing. Then the heat sealing assembly 340 is controlled to heat seal the battery, and the heat sealing area is located between the main body part and the air bag part of the battery, close to the main body part of the battery. The heat sealing assembly 340 controls the heat sealing temperature and pressure according to the battery specifications and process requirements, to realize reliable sealing of the air bag part of the battery.

[0095] The embodiment of the battery degassing packaging method realizes the automation and standardization of the battery packaging process by precisely controlling the key processes such as pre-pressing, vacuumizing, centrifugal rotation, puncturing and heat sealing in the battery packaging process, and significantly improves the precision and consistency of the battery packaging. At the same time, the closed-loop control strategy of monitoring and adjusting can adapt to the change of the running conditions of the device, ensure the stability of the packaging quality, and improve the overall performance and reliability of the battery.

[0096] As shown in Figures 2 to 4 The pre-pressing assembly 320 includes a pressing plate 321, a pre-pressing driving element 322 and a pre-pressing pressure sensor. The pre-pressing driving element 322 can be a servo cylinder or a ball screw-servo motor module, which itself is integrated with a high-resolution encoder that can provide real-time feedback of the displacement of the pressing plate 321; the pre-pressing pressure sensor is embedded in the pressing plate 321 or on the jig platform 311. It can be understood that the step S200 further includes but is not limited to steps S210 to S240:

[0097] S210, obtaining a preset pre-pressing starting position and a preset displacement-pressure threshold value;

[0098] S220, controlling the pre-pressing driving element 322 to drive the pressing plate 321 to the pre-pressing starting position;

[0099] S230, controlling the pre-pressing pressure sensor to collect the actual pre-pressing pressure information of the pressing plate 321 in real time;

[0100] S240, adjusting the driving displacement of the pre-pressing driving element 322 in real time according to the actual pre-pressing pressure information and the displacement-pressure threshold value.

[0101] In steps S210 to S240, first, the preset pre-pressing starting position and the preset displacement-pressure threshold value are obtained. The pre-pressing starting position is the initial position at which the pressing plate 321 starts to apply pressure to the battery, which is usually slightly higher than the surface of the battery to ensure that the pressing plate 321 can smoothly contact the battery. The displacement-pressure threshold value is a set of parameters, including the minimum, standard and maximum values of the pre-pressing displacement, and the minimum, standard and maximum values of the pre-pressing pressure. These parameters can be customized according to different specifications of the battery, or adjusted according to the needs of the same battery at different packaging stages. Then, the pre-pressing driving element 322 is controlled to drive the pressing plate 321 to the pre-pressing starting position. In this process, the pressing plate 321 is lowered at a faster speed to a position close to the surface of the battery to shorten the pre-pressing time.

[0102] Next, the preload pressure sensor is controlled to collect actual preload pressure information on the pressure plate 321 in real time. The preload pressure sensor continuously collects actual preload pressure data at a preset sampling frequency and transmits the data to the control system. Simultaneously, the control system also calculates and records the current displacement of the pressure plate 321 in real time. Finally, based on the actual preload pressure information and the displacement-pressure threshold, the drive displacement of the preload driver 322 is adjusted in real time. For example, the specific control logic is as follows: When the actual preload pressure does not reach the minimum preload pressure standard, the preload driver 322 is controlled to continue driving the pressure plate 321 downward until the standard preload pressure is reached. However, if the drive displacement of the preload driver 322 has reached the maximum displacement threshold, even if the preload pressure has not yet reached the minimum pressure standard, the preload driver 322 is controlled to stop moving downward to prevent excessive compression of the battery. If the preload displacement does not reach the minimum displacement standard, the preload driver 322 is controlled to continue driving the pressure plate 321 downward until the standard preload displacement is reached. However, if the preload pressure reaches the maximum threshold, even if the preload displacement has not yet reached the minimum preload displacement standard, the preload driver 322 is controlled to stop moving downward to prevent excessive pressure on the battery. Once both values ​​are within the permitted range, small, high-precision servo micro-movements are used to stabilize the actual value near the standard value. Optionally, if the preload driver 322 remains stable and either the actual preload pressure or the preload displacement is between the maximum and minimum values, an alarm or warning can be issued.

[0103] As you can imagine, the pre-pressing control strategy can also be dynamically adjusted according to the different stages of the packaging process. For example, before puncturing the airbag, a higher pre-pressing force may be required to ensure the battery is securely fixed; after puncture, the pre-pressing force may need to be reduced to prevent excessive electrolyte loss. The control system can automatically switch the pre-pressing control strategy at different packaging stages based on a preset process parameter library, achieving refined control of the pre-pressing process.

[0104] The pre-pressing control strategy in this embodiment fully utilizes the mutually restrictive relationship between displacement and pressure: when pressure is insufficient but displacement still has margin, continued downward pressure quickly compensates; when displacement is insufficient but pressure approaches the upper limit, downward pressure is stopped to avoid damaging the battery; when both pressure and displacement are within the permitted range, small, high-precision servo micro-movements are used to stabilize the actual value near the standard value. This pre-pressing control strategy, based on dual feedback of displacement and pressure, significantly improves the accuracy and reliability of the battery pre-pressing process, creating favorable conditions for subsequent vacuuming, centrifugal rotation, puncturing, and heat sealing processes, thereby enhancing the overall quality of battery packaging.

[0105] For example, Figure 1 and Figure 2As shown, the embodiment rotating drive mechanism 200 includes a rotating drive and a rotation speed sensor. The rotating drive can be a variable frequency motor or a servo motor, used to drive the rotating disc 100 to rotate. The rotation speed sensor is installed near the rotating shaft of the rotating disc 100, used to detect the rotating speed of the rotating disc 100 in real time. The rotating drive is connected to the rotating disc 100 through a reducer and a transmission mechanism, to provide sufficient torque and achieve precise speed control. Based on the embodiment rotating drive mechanism 200, step S400 can further include but not limited to steps S410-S340:

[0106] S410, obtaining preset centrifugation time information and preset standard rotation speed information;

[0107] S420, controlling the rotating drive to drive the rotating disc 100 to rotate;

[0108] S430, controlling the rotation speed sensor to collect actual rotation speed information of the rotating disc 100 in real time;

[0109] S440, adjusting the output rotation speed of the rotating drive in real time according to the actual rotation speed information, the centrifugation time information and the standard rotation speed information.

[0110] In steps S410-S440, the centrifugation time information can include total centrifugation time and centrifugation time allocation of each stage. The standard rotation speed information includes target rotation speed values of each stage, usually represented as a rotation speed-time curve. These parameters are customized according to the size, weight, electrolyte volume and material characteristics of the battery, to ensure the best centrifugation effect. For example, for large capacity batteries, longer centrifugation time and higher maximum rotation speed may be required to ensure that the electrolyte fully wets the electrode material; while for small batteries, shorter centrifugation time and moderate rotation speed may be used to avoid excessive centrifugal force damaging the battery structure. A typical centrifugation process can include an acceleration stage, a constant speed stage and a deceleration stage, each of which is carefully designed to optimize the distribution of electrolyte and the gas-liquid separation effect.

[0111] Then, the rotating drive is controlled to drive the rotating disc 100 to rotate. In this process, the rotating drive gradually increases the output power according to the preset acceleration curve, so that the rotating disc 1002 accelerates smoothly to the target rotation speed, avoiding sudden acceleration to impact the battery and equipment. Then, the rotation speed sensor is controlled to collect actual rotation speed information of the rotating disc 100 in real time. The rotation speed sensor continuously collects rotation speed data at a high sampling frequency and transmits the data to the control system. The control system compares the actual rotation speed information with the standard rotation speed curve and calculates the deviation. Finally, the output rotation speed of the rotating drive is adjusted in real time according to the actual rotation speed information, the centrifugation time information and the standard rotation speed information.

[0112] For example, during the acceleration phase, if the actual acceleration rate is lower than expected, the control system will appropriately increase the output power of the rotating drive to ensure that the turntable 100 reaches the standard rotation speed within the preset time; during the constant speed phase, the control system adjusts the output of the rotating drive in real time according to the deviation between the actual rotation speed and the target rotation speed through the PID (Proportion-Integral-Derivative) control algorithm, so that the actual rotation speed is stabilized around the target value, and the deviation is controlled within the allowable range; during the deceleration phase, the control system smoothly reduces the output power of the rotating drive according to the preset deceleration curve, so that the turntable 100 gradually decelerates to a stop state, avoiding sudden braking impact on the battery and the equipment. During the entire centrifugal process, the control system continuously monitors the cumulative value of the centrifugal time to ensure that the centrifugal time of each phase meets the preset requirements. If the actual rotation speed cannot reach the target value due to some reasons (such as power fluctuations, load changes, etc.), the control system will appropriately extend the centrifugal time to ensure the centrifugal effect.

[0113] By implementing the centrifugal control strategy, precise control of the centrifugal process can be achieved, ensuring uniform distribution of the electrolyte inside the battery and sufficient separation of gas and liquid. Compared with the traditional fixed parameter control method, the centrifugal control strategy of the embodiment has better adaptability and reliability, and can be adjusted in real time according to the battery characteristics and equipment state to ensure the consistency of the centrifugal effect.

[0114] For example, the air extraction assembly includes a negative pressure source, a multi-section control valve, and an air pressure sensor. The negative pressure source can be a vacuum pump or a vacuum generator, which is used to provide a negative pressure environment for the working cavity. The multi-section control valve is installed on the pipeline between the negative pressure source and the working cavity, which is used to adjust the communication state and flow between the negative pressure source and the working cavity. The air pressure sensor is installed in the working cavity or on the pipeline connected with the working cavity, which is used to monitor the air pressure in the working cavity in real time. Based on the air extraction assembly of the embodiment, step S300 can further include but is not limited to steps S310-S340:

[0115] S310, obtaining preset time period-air pressure information according to the specification information of the battery;

[0116] S320, controlling the multi-section control valve to communicate the negative pressure source and the working cavity;

[0117] S330, controlling the air pressure sensor to collect actual air pressure information in the working cavity in real time;

[0118] S340, controlling the multi-section control valve to adjust the air pressure in the working cavity in multiple sections according to the time period-air pressure information and the actual air pressure information.

[0119] In steps S310 to S340, the time period pressure information is a set of data defining the target pressure values to be achieved in the work cavity at different time periods during the vacuuming process. These information is usually represented as a pressure-time curve containing multiple key points, such as the initial vacuuming stage, the transition stage, and the maintenance stage, etc. Different specifications of batteries, due to the differences in their internal structure, electrolyte usage, and air bag characteristics, require customized time period-pressure information. Larger batteries may require longer vacuuming time and more complex pressure variation curves, while small batteries may adopt a simplified vacuuming strategy.

[0120] First, the multi-stage control valve is controlled to connect the negative pressure source and the work cavity. In the initial stage, only a small flow valve may be opened to slowly reduce the air pressure in the work cavity, avoiding the impact on the battery caused by sudden changes in air pressure; then, larger flow valves are gradually opened as needed to speed up the vacuuming speed. Next, the air pressure sensor is controlled to collect real-time air pressure information in the work cavity. The air pressure sensor continuously collects air pressure data at an appropriate sampling frequency (such as 10 Hz) and transmits the data to the control system. The control system compares the actual air pressure information with the preset time period-pressure information and calculates the deviation of the current air pressure from the target air pressure. Finally, according to the time period-pressure information and the actual air pressure information, the multi-stage control valve is controlled to adjust the air pressure in the work cavity in multiple stages. For example, the specific control logic is as follows:

[0121] If the actual air pressure is higher than the target air pressure (i.e., the vacuuming effect is insufficient), the control system will increase the opening of the multi-stage control valve according to the deviation to enhance the vacuuming effect; if the actual air pressure is lower than the target air pressure (i.e., the vacuuming effect is too strong), the control system will reduce the opening of the multi-stage control valve, and if necessary, even a small amount of air can be introduced through a special air inlet valve to raise the air pressure to the target range; when the actual air pressure is within the allowed range of the target air pressure (such as ±5%), the control system will maintain the current valve state to ensure stable air pressure; during the entire vacuuming process, the control system continuously monitors the cumulative value of time and automatically adjusts the control strategy according to the air pressure requirements at different time periods. Further, if an abnormal situation is detected during the vacuuming process (such as sudden pressure change, long time unable to reach the target pressure, etc.), the control system will issue an alarm and handle it according to the preset emergency strategy, such as pausing the vacuuming, restarting, or directly aborting the current packaging process.

[0122] By implementing the example air exhaust control strategy, the system can achieve time period, multi-stage, and closed-loop pressure regulation control, and can achieve precise control of the vacuuming process.

[0123] For example, Figure 1 and Figure 4As shown, the heat sealing assembly 340 includes a heat sealing drive 341, a heat sealing block 342, a heating module, a heat sealing pressure sensor, and a heat sealing temperature sensor. The heat sealing drive 341 can be a precision air cylinder or an electric push rod for driving the heat sealing block 342 to press the battery air bag part. The heat sealing block 342 is usually made of high-temperature-resistant material, and its working surface is precisely machined to ensure good contact with the battery air bag part. The heating module is embedded in the heat sealing block 342 to provide the heat required for heat sealing. The heat sealing pressure sensor is installed on the support structure of the heat sealing block 342 to monitor the heat sealing pressure in real time. The heat sealing temperature sensor is embedded in the heat sealing block 342 near the working surface to monitor the heat sealing temperature in real time. Based on the heat sealing assembly 340 of the embodiment, step S600 can further include but is not limited to steps S610-S650:

[0124] S610, obtaining a preset standard heat sealing temperature and a standard heat sealing pressure according to the specification information of the battery;

[0125] S620, controlling the heat sealing pressure sensor to collect the actual heat sealing pressure generated by the heat sealing block 342 on the battery in real time;

[0126] S630, controlling the heat sealing temperature sensor to collect the actual heat sealing temperature of the heat sealing block 342 in real time;

[0127] S640, adjusting the power of the heating module in real time according to the standard heat sealing temperature and the actual heat sealing temperature;

[0128] S650, adjusting the output pressure of the heat sealing drive 341 in real time according to the standard heat sealing pressure and the actual heat sealing pressure.

[0129] In steps S610 to S650, the heat sealing temperature information defines the temperature that the heat sealing platen 342 should reach during the heat sealing process and its variation curve, and the heat sealing pressure information defines the pressure that should be applied during the heat sealing process and its variation curve. Understandably, heat sealing time information that defines the duration of the entire heat sealing process should also be obtained. Then, the heating module is controlled to heat the heat sealing platen 342 to the preset standard heat sealing temperature. Next, the heat sealing drive 341 is controlled to drive the heat sealing platen 342 to contact the air bag portion of the battery, and a preset standard heat sealing pressure is applied. During this process, the heat sealing pressure sensor monitors the actual pressure in real time, and the heat sealing temperature sensor monitors the actual temperature in real time, and feeds back these information to the control system. The control system adjusts the output force of the heat sealing drive 341 and the heating power of the heating module according to the feedback information, to ensure that the temperature and pressure during the heat sealing process meet the preset requirements. For example, the specific heat sealing control strategy is as follows: the heat sealing drive 341 drives the heat sealing platen 342 to contact the heat sealing area of the battery; after the heat sealing platen 342 contacts the battery, the heat sealing platen 342 gradually increases the pressure according to the preset pressure curve until the target pressure is reached, and the heat sealing pressure sensor detects the pressure applied by the heat sealing platen 342 in real time. If the actual pressure is lower than the standard heat sealing pressure, the control system will increase the output force of the heat sealing drive 341, and if the actual pressure is higher than the standard heat sealing pressure, the output force will be reduced. At the same time, the heating module controls the temperature of the heat sealing platen 342 according to the preset temperature curve. If the actual temperature is lower than the standard heat sealing temperature, the control system will increase the heating power, and if the actual temperature is higher than the standard heat sealing temperature, the heating power will be reduced or the heating will be temporarily turned off. A typical temperature control uses a PID algorithm to ensure that the temperature fluctuation is controlled within a reasonable range. When the temperature and pressure both reach the target value, a preset time (such as 2-5 seconds) is maintained to ensure that the heat sealing is fully completed. During the maintenance stage, the control system continuously monitors the temperature and pressure for fine tuning to maintain stability. After the heat sealing is completed, a short period of cooling (such as 1-2 seconds) is performed under the condition of maintaining the pressure, to improve the heat sealing strength.

[0130] By implementing the heat sealing assembly 340 control method, closed-loop control of the heat sealing pressure and the heat sealing pressure is achieved, which significantly reduces the probability of wrinkles, burn marks and leakage caused by overpressure and overtemperature.

[0131] Understandably, the example battery sealing device also includes a feeding mechanism, and the first locking mechanism is further arranged on the turntable 100. Based on the above structure, step S100 can further include but is not limited to steps S110 to S140:

[0132] S110, control the first locking mechanism to work to fix the position of the turntable 100;

[0133] S120, control the feeding mechanism to feed the battery to the clamp platform 311 of the corresponding air extraction packaging mechanism 300;

[0134] S130, control the first locking mechanism to unlock, control the rotary drive mechanism 200 to index rotation, so that another air extraction packaging mechanism 300 moves to the feeding position of the feeding mechanism;

[0135] S140, repeat the above steps until all air extraction packaging mechanisms 300 complete feeding.

[0136] In steps S110 to S140, first, control the first locking mechanism to work to fix the position of the turntable 100, ensure that the turntable 100 is completely stationary, and provide a stable working environment for feeding. Then, control the feeding mechanism to feed the battery to the clamp platform 311 of the corresponding air extraction packaging mechanism 300. The feeding mechanism can use a robot arm, a conveyor belt, or other automated conveying equipment to accurately place the battery to be packaged on the clamp platform 311. The action control of the feeding mechanism can be realized by PLC or other control units to ensure accurate positioning of the battery on the clamp platform 311. After feeding is completed, control the first locking mechanism to unlock to restore the rotatable state of the turntable 100. Then, control the rotary drive mechanism 200 to drive the turntable 100 to index rotation, so that another air extraction packaging mechanism 300 moves to the feeding position of the feeding mechanism. The rotary drive mechanism 200 can select a servo motor to ensure the rotation accuracy of the turntable 100, so that the next air extraction packaging mechanism 300 is accurately positioned at the feeding position. Repeat the above steps until all air extraction packaging mechanisms 300 complete feeding.

[0137] Further, as shown in Figure 3 (not convenient to show the internal structure of the air extraction packaging mechanism 300, Figure 3 the middle frame 313 is hidden) the embodiment air extraction packaging mechanism 300 includes a lower cavity seat 312, a middle frame 313, a top plate 314, an opening and closing drive 315, and a second locking mechanism, wherein the clamp platform 311 is arranged on the lower cavity seat 312. The lower cavity seat 312 is used as the basic support component of the air extraction packaging mechanism 300, and the clamp platform 311 for placing the battery is arranged thereon. The middle frame 313 cooperates with the lower cavity seat 312 and the top plate 314 to form a closed working cavity. The top plate 314 is fixed on the support frame, and the support frame is fixed on the lower cavity seat 312 to form an overall frame structure. The opening and closing drive 315 is installed on the mounting bracket and is used to drive the middle frame 313 to move up and down to realize the opening and closing of the working cavity. The opening and closing drive 315 can select a cylinder, a servo motor, or other suitable drive mechanism. The second locking mechanism is arranged on the mounting bracket and is used to fix the middle frame 313 at a specific position when needed to prevent the middle frame 313 from falling accidentally. Based on the above structure, step S120 can further include but is not limited to steps S121 to 125:

[0138] S121, control the opening and closing driving part 315 to drive the middle frame body 313 to rise to a preset cavity opening position;

[0139] S122, control the second locking mechanism to fix the position of the middle frame body 313 to avoid the middle frame body 313 from falling during the feeding process;

[0140] S123, control the feeding mechanism to feed the battery to the clamp platform 311;

[0141] S124, control the opening and closing driving part 315 to drive the middle frame body 313 to descend, so that the lower cavity seat 312, the middle frame body 313 and the top plate 314 are closed to seal the working cavity;

[0142] S125, control the second locking mechanism to fix the position of the middle frame body 313 to avoid the middle frame body 313 from being accidentally opened.

[0143] In steps S121 to S125, first, control the opening and closing driving part 315 to drive the middle frame body 313 to rise to a preset cavity opening position. Then, control the second locking mechanism to fix the position of the middle frame body 313 to avoid the middle frame body 313 from falling accidentally during the feeding process. Next, control the feeding mechanism to feed the battery to the clamp platform 311. The feeding mechanism accurately places the battery at the designated position of the clamp platform 311 according to the preset program and parameters. After feeding is completed, control the opening and closing driving part 315 to drive the middle frame body 313 to descend, so that the lower cavity seat 312, the middle frame body 313 and the top plate 314 are closed to seal the working cavity. This process requires accurate control of the descending speed and position of the middle frame body 313 to ensure good sealing of the working cavity. During the descending process of the middle frame body 313, the second locking mechanism is unlocked first to allow the middle frame body 313 to descend. Finally, control the second locking mechanism to fix the position of the middle frame body 313 again to avoid the middle frame body 313 from being accidentally opened during the packaging process.

[0144] The second locking mechanism fixes the position of the middle frame body 313 in different working states, preventing the middle frame body 313 from moving accidentally during the feeding process or the packaging process, improving the safety and stability of the equipment operation; at the same time, the accurate control of the position of the middle frame body 313 by the opening and closing driving part 315 ensures good sealing of the working cavity, providing good environmental conditions for subsequent vacuumizing, centrifuging and heat sealing processes.

[0145] Further, the clamp platform 311 is provided with a plurality of suction holes, and the suction holes are provided with negative pressure detection ports. The clamp platform 311 is a support structure for placing the battery, and a plurality of suction holes are uniformly distributed thereon for preliminary fixation of the battery by negative pressure adsorption. Each suction hole is provided with a negative pressure detection port connected to a gas pressure sensor or other negative pressure detection device for monitoring the actual negative pressure of each suction hole. Through these negative pressure detection ports, the system can obtain the negative pressure information of each suction hole in real time, and judge whether the battery is correctly placed and effectively adsorbed. Based on the above design, step S120 can further include but is not limited to steps S126-S128:

[0146] S126, control the suction hole to adsorb the battery;

[0147] S127, obtain the negative pressure information of each negative pressure detection port;

[0148] S128, judge whether the battery is successfully fed according to the negative pressure information.

[0149] In steps S126-S128, after the battery is placed on the clamp platform 311, the suction holes on the clamp platform 311 will adsorb the battery and form a preliminary fixation of the battery. Then the system collects the actual negative pressure data of each suction hole through the sensor connected to the negative pressure detection port in real time. These data reflect the sealing condition of each suction hole contacting with the battery, which is an important basis for judging the placement state of the battery. The system compares the collected negative pressure data with the preset standard negative pressure range. If the negative pressure values of all negative pressure detection ports are within the normal range, it indicates that the battery has been correctly placed and effectively adsorbed. If the negative pressure values of one or more negative pressure detection ports are abnormal, it may indicate that the battery is placed off-center, the battery is deformed, or the suction hole is blocked, etc. The system will issue an alarm and pause the subsequent process of the station, waiting for manual intervention.

[0150] By providing suction holes and negative pressure detection ports on the clamp platform 311, real-time monitoring and judgment of the placement state of the battery are realized, and packaging defects caused by improper placement of the battery are avoided. At the same time, the negative pressure adsorption method can preliminarily fix the battery and avoid the battery from shifting before the pre-pressing assembly 320 works.

[0151] It is understood that the example electric vacuum degassing packaging device also includes a vacuum breaking assembly for releasing the negative pressure state in the working cavity after the heat sealing is completed. The vacuum breaking assembly can include a vacuum breaking valve and a vacuum breaking pipeline in communication with the working cavity. The vacuum breaking valve is installed on the vacuum breaking pipeline for controlling the communication state between the external atmosphere and the working cavity. One end of the vacuum breaking pipeline is connected to the working cavity, and the other end is in communication with the external atmosphere through the vacuum breaking valve. In addition, the vacuum breaking assembly can also be optionally provided with a vacuum breaking air pressure sensor for monitoring the air pressure change in the working cavity to ensure the integrity of the vacuum breaking process. Based on the above structure, steps S600 can further include but are not limited to steps S710-S730:

[0152] S710, controlling the vacuum breaking assembly to work to release the negative pressure state in the working cavity;

[0153] S720, controlling the working cavity to open;

[0154] S730, controlling the pressing plate 321 of the pre-pressing assembly 320 to rise.

[0155] In steps S710-S730, after the heat sealing assembly 340 is controlled to heat seal the battery, the vacuum breaking assembly is controlled to work to release the negative pressure state in the working cavity. Specifically, the control system sends an instruction to open the vacuum breaking valve, so that the external atmosphere enters the working cavity through the vacuum breaking pipeline, and gradually balances the air pressure difference between the inside and outside of the working cavity. The vacuum breaking process should be smooth to avoid the sudden change of air pressure affecting the quality of the heat sealing of the battery. Optionally, during the vacuum breaking process, the vacuum breaking air pressure sensor monitors the air pressure value in the working cavity in real time, and when the air pressure reaches a preset value (close to atmospheric pressure), the system determines that the vacuum breaking process is completed. Then, the working cavity is controlled to open. After confirming that the air pressure in the working cavity has returned to a safe level, the opening and closing drive 315 is controlled to drive the middle frame body 313 to rise to open the working cavity. During the opening of the working cavity, the system will release the locking state of the second locking mechanism to allow the middle frame body 313 to rise to a preset open position. Finally, the pressing plate 321 of the pre-pressing assembly 320 is controlled to rise, and after the working cavity is completely opened, the pre-pressing drive 322 is controlled to drive the pressing plate 321 to rise to the initial position to release the pressure on the battery, preparing for the next step of discharging the battery. Through the design of the vacuum breaking assembly, the air pressure in the working cavity is released smoothly, avoiding the adverse effects of sudden air pressure changes on the packaged battery. At the same time, the sequence control of the opening of the working cavity and the rising of the pressing plate 321 ensures the safe removal of the packaged battery, preventing the interference of mechanical actions on the packaging quality. In addition, the automatic control of the entire process improves the working efficiency and operational safety of the device, reducing the need for manual intervention.

[0156] It can be understood that the example battery degassing packaging device also includes a detection system for quality detection of the packaged battery. The detection system includes a thickness detection unit, a weight detection unit, and an image acquisition unit. Based on the above design, steps S600 can further include steps S740-S770.

[0157] S740, acquiring thickness information of the main body part of the battery;

[0158] S750, acquiring weight information of the battery;

[0159] S760, acquiring image information of the appearance of the battery;

[0160] S770, based on a preset judgment standard, determining whether the packaging of the battery is qualified according to the thickness information, the weight information, and the image information.

[0161] In steps S740-S770, the thickness information of the main body part of the battery is acquired. The system can measure the thickness at multiple preset points of the battery main body to obtain the distribution of the battery thickness. The thickness information reflects the degree of gas discharge in the battery and the uniformity of the packaging pressure, which is an important basis for judging the packaging quality. The weight information of the battery is acquired by placing the packaged battery on an electronic scale, and the system records the actual weight value of the battery. Compared with the initial weight of the battery before packaging, the loss amount of electrolyte during the packaging process can be calculated. The image information of the appearance of the battery is acquired by controlling the image acquisition unit to take multiple-angle photos of the battery to obtain high-definition images of the battery surface, the sealing edge, and other regions. The system processes the acquired images to extract characteristic parameters such as sealing width, sealing edge flatness, and surface bubbles. Finally, based on a preset judgment standard, whether the packaging of the battery is qualified is determined according to the thickness information, the weight information, and the image information. The system compares the acquired parameters with the preset standard range: the thickness information is used to determine whether the gas in the battery is fully discharged; the weight information is used to evaluate whether the electrolyte loss is within the allowable range; and the image information is used to check the sealing quality and appearance defects. If all parameters are within the qualified range, the battery packaging is determined to be qualified; if any parameter exceeds the standard range, it is determined to be unqualified, and the system will issue an alarm and record the cause of failure for subsequent analysis and improvement. In practical applications, the detection methods and judgment standards of each parameter can be adjusted according to the characteristics and quality requirements of different types of batteries.

[0162] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the application. In addition, the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A battery degassing packaging method, characterized in that: Applicable to battery degassing and packaging equipment, the battery degassing and packaging equipment includes a turntable, a rotary drive mechanism and a plurality of vacuum packaging mechanisms arranged on the turntable, the vacuum packaging mechanism is provided with an openable and closable working chamber, and the working chamber is provided with a vacuum component, a heat sealing component, a puncture component and a pre-pressing component; The battery degassing packaging method comprises: Loading the batteries to be packaged onto the fixture platform in the working chamber; Controlling the pressing plate of the pre-pressing assembly to descend, so as to pre-press the battery body of the battery according to a preset pre-pressing control strategy; Controlling the vacuum assembly to vacuum the working chamber according to a preset vacuum control strategy; Controlling the rotation drive mechanism to drive the turntable to rotate according to a preset centrifugal control strategy; Controlling the puncture assembly to puncture the air bag portion of the battery; The heat sealing assembly is controlled to heat seal the battery.

2. The battery degassing packaging method according to claim 1, characterized in that: The pre-pressing assembly includes a pressing plate, a pre-pressing driving member and a pre-pressing pressure sensor, and the pre-pressing pressure sensor is arranged on the fixture platform or the pressing plate; The controlling the pressing plate of the pre-pressing assembly to descend so as to pre-press the battery body of the battery according to a preset pre-pressing control strategy includes: Obtaining a preset pre-compression starting position and a preset displacement-pressure threshold; Controlling the pre-pressing driving member to drive the pressing plate to the pre-pressing starting position; Controlling the pre-compression pressure sensor to collect actual pre-compression pressure information of the pressing plate in real time; The driving displacement of the preloading driving member is adjusted in real time according to the actual preloading pressure information and the displacement-pressure threshold.

3. The battery degassing packaging method according to claim 1, characterized in that: The rotary drive mechanism includes a rotary drive member and a rotation speed sensor; The controlling the rotation drive mechanism to drive the turntable to rotate according to a preset centrifugal control strategy includes: Obtaining preset centrifugation time information and preset standard speed information; Controlling the rotary drive member to drive the turntable to rotate; Controlling the speed sensor to collect the actual speed information of the turntable in real time; The output speed of the rotary drive component is adjusted in real time according to the actual speed information, the centrifugal time information and the standard speed information.

4. The battery degassing packaging method according to claim 1, characterized in that: The air extraction component includes a negative pressure source, a multi-stage control valve and an air pressure sensor; The step of controlling the vacuum assembly to vacuum the working chamber according to a preset vacuum control strategy includes: Get the preset time period air pressure information; controlling the multi-stage control valve to connect the negative pressure source and the working chamber; Controlling the air pressure sensor to collect actual air pressure information in the working chamber in real time; According to the time period air pressure information and the actual air pressure information, the multi-stage control valve is controlled to adjust the air pressure in the working chamber in multiple stages.

5. The battery degassing and packaging method according to claim 1, characterized in that: The heat sealing assembly includes a heat sealing driver, a heat sealing block, a heating module, a heat sealing pressure sensor and a heat sealing temperature sensor; Controlling the heat sealing assembly to heat seal the battery comprises: Obtain the preset standard heat sealing temperature and standard heat sealing pressure; Controlling the heat sealing pressure sensor to collect the actual heat sealing pressure exerted by the heat sealing block on the battery in real time; Controlling the heat sealing temperature sensor to collect the actual heat sealing temperature of the heat sealing block in real time; adjusting the power of the heating module in real time according to the standard heat sealing temperature and the actual heat sealing temperature; The output pressure of the heat sealing driving component is adjusted in real time according to the standard heat sealing pressure and the actual heat sealing pressure.

6. The battery degassing and packaging method according to any one of claims 1 to 5, characterized in that: The battery degassing and packaging equipment further includes a loading mechanism, and the turntable is further provided with a first locking mechanism; The clamping platform for loading the battery to be packaged into the working chamber includes: controlling the first locking mechanism to operate so as to fix the position of the turntable; Controlling the loading mechanism to load the battery onto the corresponding fixture platform of the vacuum packaging mechanism; Controlling the first locking mechanism to unlock, and controlling the rotary drive mechanism to index and rotate, so that the other vacuum packaging mechanism moves to the loading position of the loading mechanism; Repeat the above steps until all the vacuum packaging mechanisms have completed loading.

7. The battery degassing and packaging method according to claim 6, characterized in that: The vacuum packaging mechanism includes a lower cavity seat, a middle frame, a top plate, an opening and closing driving member and a second locking mechanism, and the clamp platform is arranged on the lower cavity seat; The controlling the loading mechanism to load the battery onto the corresponding fixture platform of the vacuum packaging mechanism includes: Controlling the opening and closing driving member to drive the middle frame to rise to a preset cavity opening position; Controlling the second locking mechanism to fix the position of the middle frame to prevent the middle frame from falling during the loading process; Controlling the loading mechanism to load the battery onto the fixture platform; Controlling the opening and closing driving member to drive the middle frame to descend, so that the lower chamber seat, the middle frame and the top plate are aligned to close the working chamber; The second locking mechanism is controlled to fix the position of the middle frame to prevent the middle frame from opening accidentally.

8. The battery degassing and packaging method according to claim 6, characterized in that: The fixture platform is provided with a plurality of suction holes, each of which is provided with a negative pressure detection port; The method further comprises: controlling the loading mechanism to load the battery onto the corresponding fixture platform of the vacuum packaging mechanism; Controlling the suction hole to adsorb the battery; Obtaining negative pressure information of each of the negative pressure detection ports; Determine whether the battery is loaded successfully based on the negative pressure information.

9. The battery degassing and packaging method according to any one of claims 1 to 5, characterized in that: The battery degassing and packaging equipment also includes a vacuum breaking component; The step of controlling the heat sealing assembly to heat seal the battery further comprises: Controlling the vacuum breaking component to work so as to release the negative pressure state in the working chamber; controlling the working chamber to open; Control the pressing plate of the pre-pressing assembly to rise.

10. The battery degassing and packaging method according to any one of claims 1 to 5, characterized in that: The step of controlling the heat sealing assembly to heat seal the battery further comprises: Collecting thickness information of the main body of the battery; Collecting weight information of the battery; collecting image information of the appearance of the battery; Based on a preset judgment standard, a packaging quality inspection result of the battery is obtained according to the thickness information, the weight information and the image information.

Images