A lithium battery production liquid injection vacuum packaging device and packaging method

Abstract

The present invention discloses a lithium battery production liquid injection vacuum packaging device and a packaging method thereof, which relates to the technical field of lithium battery manufacturing process, and includes the following steps: scanning and registering through a front code scanning module; making a preliminary prediction, adjusting the turntable speed; performing liquid injection after calculating the target liquid injection volume; using the deviation and the machine learning model to judge the liquid injection quality, determine whether the battery pack after liquid injection is qualified, process unqualified battery packs, and package qualified battery packs. After packaging is completed, the battery pack will be scanned for the last time through a rear code scanning module to store all data of the entire production process. The present invention realizes real-time optimization of the turntable speed through a dynamic speed adjustment formula, and combines the real-time liquid injection working conditions to control the processing speed of battery packs of different types and specifications differently to ensure the accuracy of liquid injection; battery packs without quality risks can improve efficiency through acceleration, greatly improving the flexibility and overall efficiency of the production line.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery manufacturing technology, and in particular to a lithium battery production liquid injection vacuum packaging device and a packaging method thereof. Background Art

[0002] As a high-energy-density electrochemical energy storage device, lithium batteries are widely used in new energy vehicles, consumer electronics, energy storage systems and other fields. In the manufacturing process of lithium batteries, the injection process is one of the key steps to ensure battery performance and service life. However, the traditional injection process has many shortcomings in practical applications: the existing process usually adopts a fixed or simple speed adjustment mechanism, and it is difficult to dynamically adjust the turntable speed for battery packs of different types and specifications. This method makes it impossible to balance production efficiency and quality, and the precise control of the injection volume is the basis for ensuring the uniform distribution of electrolyte inside the battery. However, traditional methods are mostly based on simple empirical formulas or preset parameters, ignoring the actual weight of the battery pack, morphological differences and real-time changes in production conditions, and are prone to leakage, over- or under-injection. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the problems existing in the above-mentioned existing lithium battery production liquid injection vacuum packaging device and packaging method, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A method for liquid injection vacuum packaging of lithium battery production, the method comprising the following steps:

[0007] Step 1: After the lithium battery pack enters the production line, it is first scanned and registered through the front scanning module to generate a unique identity code for each lithium battery pack;

[0008] Step 2: The battery pack is identified by the barcode scanning module, and the injection demand is predicted through the machine learning algorithm The robot module places the battery in the weighing area and records the initial weight. ;

[0009] Step 3: Build a turntable speed adjustment mechanism to dynamically adjust the turntable speed based on the factors affecting the injection conditions required for the current specifications of the lithium battery pack, so that the battery pack can be stably delivered to the injection area;

[0010] Step 4: Combine weighing data , predict injection demand , real-time pressure changes, calculate the target injection volume and then perform injection;

[0011] Step 5: After the injection is completed, the robot module cooperates with the turntable module to transfer the lithium battery pack to the weighing area and record the weight after injection. , combined with the weight difference before and after and the target injection volume, calculate the injection deviation Finally, the deviation and machine learning model are used to judge the injection quality and determine whether the battery pack is qualified after injection;

[0012] Step 6: The robot module cooperates with the turntable module to transfer the lithium battery pack to the unloading area. For unqualified battery packs, they will be registered by scanning the code and then enter the rework or waste treatment process; for qualified battery packs, they will be grabbed by the robot module and sent to the packaging module for automatic packaging;

[0013] Step 7: After packaging is completed, the battery pack will be scanned for the last time through the post-scanning module. All data of the entire production process: pre-weighing, liquid filling, post-weighing, packaging status, will be summarized and uploaded to the production management system to provide complete data support for quality traceability and management.

[0014] As a preferred solution of the lithium battery production liquid injection vacuum packaging device and packaging method described in the present invention, the turntable speed adjustment mechanism specifically includes:

[0015] S301: Calculate the factors affecting the change in liquid pressure during injection ;in, is the normalization factor of pressure change, the pressure change is the historical mean of pressure, The closer the value is to 1, the smaller the pressure fluctuation is and the higher the stability is;

[0016] S302: Obtaining sampling values ​​of multiple flow rate sensors and mean , calculate the deviation ratio of flow rate to injection target ;According to the obtained deviation ratio Calculate the overall flow rate deviation factor , where N represents the number of flow rate sensors;

[0017] S303: According to the real-time energy loss formula Calculate the adjustment factor ; , ,in, represents the density of the liquid, Indicates the current flow rate. Liquid flow rate per unit time, Normalization factor for energy loss;

[0018] S304: Based on the impact factors of the above three parts , ,as well as , calculate the comprehensive speed adjustment factor C, and adjust the turntable speed according to the comprehensive speed adjustment factor.

[0019] As a preferred solution of the lithium battery production liquid injection vacuum packaging device and packaging method described in the present invention, the calculation formula of the comprehensive speed adjustment factor C is: ;in , , Represents the weight of each influencing factor and satisfies ; represents the normalization factor; and the adjusted turntable speed , Indicates the initial speed of the turntable.

[0020] As a preferred embodiment of the present invention, a lithium battery production liquid injection vacuum packaging device and a packaging method thereof, wherein: If the maximum speed of the turntable module is greater than the set high speed threshold, , if the maximum permissible speed range of the turntable module is larger, then increase this value appropriately;

[0021] like If the speed is lower than the set low speed threshold, the minimum allowable speed of the turntable module is lower than the set low speed threshold. , if the minimum permissible speed range of the turntable module is lower, reduce this value;

[0022] like If it is between the set high speed threshold and low speed threshold, it is adjusted according to the current actual calculation result.

[0023] As a preferred solution of the lithium battery production liquid injection vacuum packaging device and packaging method described in the present invention, the calculation formula of the target liquid injection amount in the step 4 is: ,in, , Represent the weight factors related to the initial weight and the predicted injection demand, respectively, satisfying , T represents the time length of a single injection session.

[0024] As a preferred solution of the lithium battery production liquid injection vacuum packaging device and packaging method described in the present invention, wherein: in the step 5, the liquid injection deviation ,in Indicates the weight of the battery pack after filling.

[0025] As a preferred solution of the lithium battery production liquid injection vacuum packaging device and packaging method described in the present invention, wherein: through the machine learning model Determine the quality of injection; ,in, Represents the sensitivity parameter, according to If the output is greater than the quality threshold, it is marked as qualified. Outputs less than or equal to the quality threshold are marked as unacceptable.

[0026] A lithium battery production liquid injection vacuum packaging device, applied to the above packaging method, the device comprises: a front code scanning module and a rear code scanning module, which are respectively used for scanning and registering in the early stage of production and for summarizing and uploading the production process data in the later stage to the production management system;

[0027] The production line conveying module is used to convey the battery pack to the designated processing area; several robot modules are used to clamp and convey the lithium battery pack to the designated working area; the turntable module is used to cooperate with the robot module to convey to four different working areas: the front weighing area, the injection area, the rear weighing area and the unloading area, and adjust its own speed through the turntable speed adjustment mechanism according to the actual production conditions;

[0028] The weighing module is used to weigh the lithium battery pack before and after injection. The injection module accurately injects the electrolyte into the lithium battery pack according to the target injection volume calculated by the electrolyte injection algorithm. The packaging module is used to package the qualified lithium battery pack after unloading.

[0029] The central control module controls the operation of the entire device, including the coordination of operations such as code scanning, weighing, liquid injection, turntable, and packaging. The quality inspection module automatically judges the quality of liquid injection and marks it as qualified or unqualified.

[0030] The present invention also discloses a computer device, including a memory and a processor, wherein the memory stores a computer program, and is characterized in that when the processor executes the computer program, the steps of the above-mentioned lithium battery production liquid injection vacuum packaging method are implemented.

[0031] The present invention also discloses a computer-readable storage medium on which a computer program is stored, characterized in that when the computer program is executed by a processor, the steps of the above-mentioned lithium battery production liquid injection vacuum packaging method are implemented.

[0032] Beneficial effects of the present invention:

[0033] 1. The present invention realizes real-time optimization of the turntable speed through a dynamic speed adjustment formula. Combined with the real-time liquid injection working conditions, the processing speed of battery packs of different types and specifications is controlled differently to ensure the accuracy of liquid injection. Battery packs without quality risks can improve efficiency by accelerating, greatly improving the flexibility and overall efficiency of the production line;

[0034] 2. The present invention organically combines turntable speed, injection volume calculation and quality judgment, and closely connects each link through real-time data collection and intelligent algorithm optimization. The dynamic adjustment of turntable speed provides sufficient time for accurate injection, the scientific calculation of target injection volume ensures the data basis, and the quality judgment mechanism provides an efficient screening method for subsequent processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0036] Figure 1 This is a schematic diagram of the overall module of a liquid injection vacuum packaging device for lithium battery production proposed by the present invention;

[0037] Figure 2 The present invention provides a schematic flow chart of a method for liquid injection and vacuum packaging of lithium batteries. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0040] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0041] Reference Figure 1-Figure 2 , as an embodiment of the present invention, provides a lithium battery production liquid injection vacuum packaging device and a packaging method thereof, the method comprising the following steps:

[0042] Step 1: After the lithium battery pack enters the production line, it is first scanned and registered through the front scanning module to generate a unique identity code for each lithium battery pack; the purpose is to enable the system to record and track the status changes of each battery pack in subsequent links to ensure data traceability.

[0043] Step 2: The battery pack is identified by the barcode scanning module, and the injection demand is predicted through the machine learning algorithm The robot module places the battery in the weighing area of ​​the turntable module and records the initial weight. , providing basic data for subsequent injection and ensuring accurate mass calculation after injection.

[0044] Common machine learning algorithms predict injection volume requirements and quality risks based on stored historical data. The prediction method can be: = , is a collection of historical data, is the specification parameter of the current battery pack, For the trained machine learning model.

[0045] Step 3: Build a turntable speed adjustment mechanism to dynamically adjust the turntable speed based on the influencing factors of the injection conditions required for the current specifications of the lithium battery pack, so that the battery pack can be stably delivered to the injection area.

[0046] Specifically, the turntable speed adjustment mechanism includes:

[0047] S301: Calculate the factors affecting the change in liquid pressure during injection ,in, is the normalization factor of pressure change, the pressure change is the historical mean of pressure, The closer the value is to 1, the smaller the pressure fluctuation is and the higher the stability is;

[0048] S302: Obtaining sampling values ​​of multiple flow velocity sensors and mean , calculate the deviation ratio of flow rate to injection target ;According to the obtained deviation ratio Calculate the overall flow rate deviation factor , where N represents the number of flow rate sensors;

[0049] S303: According to the real-time energy loss formula Calculate the adjustment factor ; , ,in, represents the density of the liquid, Indicates the current flow rate. Liquid flow rate per unit time, Normalization factor for energy loss;

[0050] S304: Based on the impact factors of the above three parts , ,as well as , calculate the comprehensive speed adjustment factor C, and adjust the turntable speed according to the comprehensive speed adjustment factor.

[0051] The calculation formula of comprehensive speed adjustment factor C is: ,in , , Represents the weight of each influencing factor and satisfies ; represents the normalization factor; and the adjusted turntable speed , Indicates the initial speed of the turntable.

[0052] According to the actual situation, if If the maximum speed of the turntable module is greater than the set high speed threshold, , if the maximum allowable speed range of the turntable module is larger, then increase this value appropriately, for example: , indicating that the speed increases by 50% compared to the initial speed. The value is usually determined based on the maximum allowable speed of the turntable module. For example, the allowable speed range of the equipment is arrive ,but If the value is close to the upper limit of safety, the value can be appropriately increased, such as or ;

[0053] like If the speed is lower than the set low speed threshold, the minimum allowable speed of the turntable module is lower than the set low speed threshold. , if the minimum permissible speed range of the rotary module is lower, reduce this value, for example: It means that the speed is reduced by 20% compared with the initial speed. This value is to leave more time for subsequent complex processing in the deceleration state, and to avoid the influence of too slow speed on the production rhythm. If the equipment allows a lower speed, such as , the value can be further reduced;

[0054] like If it is between the set high speed threshold and low speed threshold, it is adjusted according to the current actual calculation result.

[0055] Step 4: Combine weighing data , predict injection demand , real-time pressure changes, calculate the target injection volume and then inject the liquid. The calculation formula for the target injection volume is: ,in, , Represent the weight factors related to the initial weight and the predicted injection demand, respectively, satisfying , T represents the time length of a single injection session.

[0056] Step 5: After the injection is completed, the robot module cooperates with the turntable module to transfer the lithium battery pack to the weighing area and record the weight after injection. , combined with the weight difference before and after and the target injection volume, calculate the injection deviation Finally, the deviation and machine learning model are used to judge the injection quality and determine whether the battery pack is qualified after injection; injection deviation ,in Indicates the weight of the battery pack after filling.

[0057] Machine Learning Models Judging the quality of injection: ,in, Represents the sensitivity parameter, according to If the output is greater than the quality threshold, it is marked as qualified. Outputs less than or equal to the quality threshold are marked as unacceptable.

[0058] Step 6: The robot module cooperates with the turntable module to transfer the lithium battery pack to the unloading area. For unqualified battery packs, they will enter the rework or waste treatment process after scanning the code for registration; for qualified battery packs, they will be grabbed by the robot module and sent to the packaging module for automatic packaging.

[0059] Step 7: After packaging is completed, the battery pack will be scanned for the last time through the post-scanning module. All data of the entire production process: pre-weighing, liquid filling, post-weighing, packaging status, will be summarized and uploaded to the production management system to provide complete data support for quality traceability and management.

[0060] The present invention also discloses a device for a method for producing a lithium battery by liquid injection and vacuum packaging, characterized in that: the device comprises: a front code scanning module and a rear code scanning module, which are respectively used for scanning and registering in the early stage of production and for summarizing and uploading production process data in the later stage to a production management system;

[0061] The production line conveying module is used to convey the battery pack to the designated processing area; several robot modules are used to clamp and convey the lithium battery pack to the designated working area; the turntable module is used to cooperate with the robot module to convey to four different working areas: the front weighing area, the injection area, the rear weighing area and the unloading area, and adjust its own speed through the turntable speed adjustment mechanism according to the actual production conditions;

[0062] The weighing module is used to weigh the lithium battery pack before and after injection. The injection module accurately injects the electrolyte into the lithium battery pack according to the target injection volume calculated by the electrolyte injection algorithm. The packaging module is used to package the qualified lithium battery pack after unloading.

[0063] The central control module controls the operation of the entire device, including the coordination of operations such as code scanning, weighing, liquid injection, turntable, and packaging. The quality inspection module automatically judges the quality of liquid injection and marks it as qualified or unqualified.

[0064] In order to verify the actual effect of the solution of the present invention, the effect of the solution was tested by simulating several battery packs on the production line. The test results include key indicators (such as weighing before and after injection, injection accuracy, adjusted turntable speed, etc.) and the improvement of actual production efficiency.

[0065] Example Number of battery packs tested: 50 (numbered B1 to B50), test environment: constant temperature 25°C, target injection volume: the ideal injection volume for each battery pack is 50 ± 0.5g, initial turntable speed : 5 rpm, the system uses the above optimization methods, including weighing, predictive analysis, dynamic speed adjustment, precise injection and post-injection detection.

[0066] Table 1 Battery pack key data test results

[0067]

[0068] Combining the above data, the conclusion is: qualified rate: 96% (48 qualified, 2 unqualified); average injection error: ±0.15g. Reason for failure: a few battery packs have material defects or the initial weight deviation is too large, which affects the injection algorithm prediction. The average speed of the dynamic adjustment of the turntable speed: =5.0 rpm.

[0069] Adjustment range: 4.5 rpm ~ 5.2 rpm, indicating that the turntable speed is dynamically optimized according to the battery pack status, which improves production efficiency. The traditional method takes 65 minutes to produce 50 battery packs, while the optimized method takes 57 minutes, and the efficiency is improved by about 12.3%. Cause analysis: Through dynamic speed adjustment and precise injection, invalid waiting time and unnecessary inspection time are reduced.

[0070] Table 2 Comparison data between optimization method and traditional method

[0071]

[0072] Through actual experimental verification, this scheme significantly improved the accuracy and production efficiency of the lithium battery filling process. Each step in the optimization method played an important role in improving the results, especially the dynamic adjustment of the turntable speed and the precise filling module, which can effectively reduce errors and ensure a high-quality production process.

[0073] This embodiment also provides a computer device, which is applicable to a method for liquid injection and vacuum packaging of lithium batteries in production, and includes: a memory and a processor; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement a method for liquid injection and vacuum packaging of lithium batteries in production as proposed in the above embodiment.

[0074] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covered on the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0075] This embodiment also provides a storage medium on which a computer program is stored. When the program is executed by a processor, a method for implementing a lithium battery production liquid injection vacuum packaging method as proposed in the above embodiment is implemented; the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (Static Random Access Memory, referred to as SRAM), electrically erasable programmable read-only memory (Electrically Erasable Programmable Read-Only Memory, referred to as EEPROM), erasable programmable read-only memory (Erasable Programmable Read Only Memory, referred to as EPROM), programmable read-only memory (Programmable Red-Only Memory, referred to as PROM), read-only memory (Read-Only Memory, referred to as ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for liquid injection vacuum packaging of lithium battery production, characterized in that: The method comprises the following steps: Step 1: After the lithium battery pack enters the production line, it is first scanned and registered through the front scanning module to generate a unique identity code for each lithium battery pack; Step 2: The battery pack is identified by the barcode scanning module, and the injection demand is predicted through the machine learning algorithm The robot module places the battery in the weighing area and records the initial weight. ; Step 3: Build a turntable speed adjustment mechanism to dynamically adjust the turntable speed based on the factors affecting the injection conditions required for the current specifications of the lithium battery pack, so that the battery pack can be stably delivered to the injection area; Step 4: Combine weighing data , predict injection demand , real-time pressure changes, calculate the target injection volume and then perform injection; Step 5: After the injection is completed, the robot module cooperates with the turntable module to transfer the lithium battery pack to the weighing area and record the weight after injection. , combined with the weight difference before and after and the target injection volume, calculate the injection deviation Finally, the deviation and machine learning model are used to judge the injection quality and determine whether the battery pack is qualified after injection; Step 6: The robot module cooperates with the turntable module to transfer the lithium battery pack to the unloading area. For unqualified battery packs, they will be registered by scanning the code and then enter the rework or waste treatment process; for qualified battery packs, they will be grabbed by the robot module and sent to the packaging module for automatic packaging; Step 7: After packaging is completed, the battery pack will be scanned for the last time through the post-scanning module. All data of the entire production process: pre-weighing, liquid filling, post-weighing, packaging status, will be summarized and uploaded to the production management system to provide complete data support for quality traceability and management.

2. A method for liquid injection vacuum packaging of lithium battery production according to claim 1, characterized in that: The turntable speed adjustment mechanism specifically includes: S301: Calculate the factors affecting the change in liquid pressure during injection ; in, is the normalization factor of pressure change, the pressure change is the historical mean of pressure, The closer the value is to 1, the smaller the pressure fluctuation is and the higher the stability is; S302: Obtaining sampling values ​​of multiple flow rate sensors and mean , calculate the deviation ratio of flow rate to injection target ;According to the obtained deviation ratio Calculate the overall flow rate deviation factor , where N represents the number of flow rate sensors; S303: According to the real-time energy loss formula Calculate the adjustment factor ; , ,in, represents the density of the liquid, Indicates the current flow rate. Liquid flow rate per unit time, Normalization factor for energy loss; S304: Based on the impact factors of the above three parts , ,as well as , calculate the comprehensive speed adjustment factor C, and adjust the turntable speed according to the comprehensive speed adjustment factor.

3. A method for liquid injection vacuum packaging of lithium battery production according to claim 2, characterized in that: The calculation formula of the comprehensive speed adjustment factor C is: ;in , , Represents the weight of each influencing factor and satisfies ; represents the normalization factor; and the adjusted turntable speed , Indicates the initial speed of the turntable.

4. A method for liquid injection vacuum packaging of lithium battery production according to claim 3, characterized in that: like If the maximum speed of the turntable module is greater than the set high speed threshold, , if the maximum permissible speed range of the turntable module is larger, increase this value; like If the speed is lower than the set low speed threshold, the minimum allowable speed of the turntable module is lower than the set low speed threshold. , if the minimum permissible speed range of the turntable module is lower, reduce this value; like If it is between the set high speed threshold and low speed threshold, it is adjusted according to the current actual calculation result.

5. A method for liquid injection vacuum packaging of lithium battery production according to claim 4, characterized in that: The calculation formula of the target injection volume in the step 4 is: ,in, , Represent the weight factors related to the initial weight and the predicted injection demand, respectively, satisfying , T represents the time length of a single injection session.

6. A method for liquid injection vacuum packaging of lithium battery production according to claim 5, characterized in that: In step 5, the injection deviation ,in Indicates the weight of the battery pack after filling.

7. A method for liquid injection vacuum packaging of lithium battery production according to claim 6, characterized in that: Through machine learning models Determine the quality of injection; ,in, Represents the sensitivity parameter, according to If the output is greater than the quality threshold, it is marked as qualified. Outputs less than or equal to the quality threshold are marked as unacceptable.

8. The device for the method for producing lithium battery liquid injection vacuum packaging according to claim 7, characterized in that: The device includes: a front scanning module and a rear scanning module, which are respectively used for scanning and registering in the early stage of production and for summarizing and uploading production process data to the production management system in the later stage; The production line conveying module is used to convey the battery pack to the designated processing area; several robot modules are used to clamp and convey the lithium battery pack to the designated working area; the turntable module is used to cooperate with the robot module to convey to four different working areas: the front weighing area, the injection area, the rear weighing area and the unloading area, and adjust its own speed through the turntable speed adjustment mechanism according to the actual production conditions; The weighing module is used to weigh the lithium battery pack before and after injection. The injection module accurately injects the electrolyte into the lithium battery pack according to the target injection volume calculated by the electrolyte injection algorithm. The packaging module is used to package the qualified lithium battery pack after unloading. The central control module controls the operation of the entire device, including the coordination of code scanning, weighing, liquid injection, turntable, and packaging operations; the quality inspection module automatically judges the quality of liquid injection and marks it as qualified or unqualified.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the liquid injection vacuum packaging method for lithium battery production described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a lithium battery production liquid injection vacuum packaging method as described in any one of claims 1 to 7 are implemented.

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