Battery cell manufacturing method and apparatus, battery cell manufacturing control device, system, storage medium and program product

Abstract

The present application relates to a battery cell manufacturing method and apparatus, a battery cell manufacturing control device, a system, a storage medium, and a program product. The battery cell manufacturing method comprises: accommodating a bare cell and an electrolyte inside a casing and sealing the casing to obtain a target battery cell; and performing formation on the target battery cell, and during the formation, on the basis of reference gas‑generation data of the target battery cell during the formation and reference plastic deformation data of the casing, determining to perform at least one degassing operation on the target battery cell. In embodiments of the present application, gas inside a target battery cell can be discharged in a timely manner, thereby facilitating improvement of the electrical performance of batteries.

Description

Battery cell manufacturing methods, apparatus, battery cell manufacturing control equipment, systems, storage media, and program products Related applications

[0001] This application claims priority to Chinese patent application filed on February 28, 2025, with application number 2025102381788, entitled "Method, Apparatus, Control Equipment, System, Storage Medium and Program Product for Manufacturing Battery Cells", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, and in particular to a method, apparatus, control equipment, system, storage medium, and program product for manufacturing a battery cell. Background Technology

[0003] Lithium-ion batteries are increasingly widely used in daily life and industry due to their advantages such as high energy density, rechargeability, safety, and environmental friendliness. For example, lithium-ion batteries are widely used in new energy vehicles, consumer electronics, and energy storage systems. However, some stages of the manufacturing process of lithium-ion battery cells (such as the formation or aging process) can generate gas. If too much gas accumulates inside the battery cell, it may lead to a decline in the battery's electrical performance.

[0004] Therefore, how to promptly remove the gas inside the battery cells is an urgent problem to be solved. Summary of the Invention

[0005] In view of the above problems, this application provides a battery cell manufacturing method, apparatus, battery cell manufacturing control equipment, system, storage medium and program product, which can timely discharge the gas inside the battery cell.

[0006] In a first aspect, this application provides a method for manufacturing a single battery cell, the method comprising:

[0007] The target battery cell is obtained by housing the bare battery cell and electrolyte inside the casing and sealing the casing.

[0008] The target battery cell is activated. During the activation process, based on the reference gas generation data of the target battery cell and the reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

[0009] In this embodiment, the method of venting the target battery cell at least once is determined by using reference gas generation data of the target battery cell during the activation process and reference plastic deformation data of the casing. Since the venting is determined by comprehensively considering the reference gas generation data and the reference plastic deformation data of the casing, the gas inside the target battery cell can be discharged in a timely manner, which is beneficial to improving the battery's electrical performance.

[0010] In some embodiments, determining to perform at least one venting operation on the target battery cell based on reference gas generation data of the target battery cell during the activation process and reference plastic deformation data of the casing includes:

[0011] Based on the reference gas production data and the reference plastic deformation data of the shell, determine the timing of at least one venting operation.

[0012] Each time the venting time is detected, the target battery cell is vented.

[0013] In this embodiment, by determining the venting timing for each venting event based on reference gas generation data and reference plastic deformation data of the casing, the method for venting the target battery cell can be determined each time the venting timing is detected. This allows for more accurate and timely removal of gas from the target battery cell, thereby further improving battery performance. In this embodiment, venting the target battery cell only when the venting timing is reached not only saves venting costs but also helps protect the electrolyte within the target battery cell.

[0014] In some embodiments, determining the timing of at least one venting operation based on reference gas production data and reference plastic deformation data of the casing includes:

[0015] The deformation time required for the shell to reach plastic deformation is determined based on the reference plastic deformation data of the shell.

[0016] Based on the reference gas production data and deformation time, determine the timing of at least one exhaust.

[0017] In this embodiment, the deformation time for the casing to reach plastic deformation is determined based on the reference plastic deformation data of the casing, and the exhaust timing corresponding to each exhaust is determined based on the reference gas generation data and the deformation time. Since the exhaust timing is determined by comprehensively considering the reference gas generation data and the deformation time, the exhaust timing can be determined more accurately, so that the gas inside the target battery cell can be discharged in time before the gas generation inside the casing causes the casing to reach plastic deformation each time.

[0018] In some embodiments, determining the timing of at least one venting operation based on reference gas production data and deformation time includes:

[0019] Based on the reference gas production data and deformation time, determine the target gas production threshold corresponding to the target battery cell;

[0020] Based on the reference gas production data and the target gas production threshold, determine the timing of at least one exhaust.

[0021] In this embodiment of the application, the target gas production threshold corresponding to the target battery cell is determined based on reference gas production data and deformation time, and the exhaust timing corresponding to at least one exhaust is determined based on reference gas production data and target gas production threshold. Since the reference gas production data and deformation time are taken into account, the target gas production threshold can be accurately determined, so that the exhaust timing corresponding to the exhaust can be accurately determined by combining the reference gas production data and the target gas production threshold.

[0022] In some embodiments, reference gas production data is used to indicate the cumulative gas production at different times during the activation process of the target battery cell; determining the venting timing corresponding to at least one venting operation based on the reference gas production data and the target gas production threshold includes:

[0023] Based on the cumulative gas production in the reference gas production data and the target gas production threshold, at least one target multiple gas production is determined; wherein the ratio of the target multiple gas production to the target gas production threshold is an integer greater than 0, and the target multiple gas production belongs to the cumulative gas production in the reference gas production data.

[0024] The time corresponding to at least one target multiple of gas production in the reference gas production data is used as the exhaust timing.

[0025] In some embodiments, reference gas generation data is used to indicate the cumulative gas generation amount of the target battery cell at different times during the activation process; determining the target gas generation amount threshold for the target battery cell based on the reference gas generation data and deformation time includes:

[0026] The cumulative gas production corresponding to the deformation time in the reference gas production data will be used as the maximum gas production threshold that the target battery cell can store.

[0027] The difference between the maximum gas production threshold and the preset gas production threshold is used as the target gas production threshold.

[0028] In this embodiment of the application, the difference between the maximum gas production threshold and the preset gas production is used as the target gas production threshold so that the timing of gas exhaust can be accurately determined based on the target gas production threshold, thereby preventing the casing of the target battery cell from undergoing plastic deformation before gas exhaust.

[0029] In some embodiments, reference gas generation data is used to indicate the cumulative gas generation amount of the target battery cell at different times during the activation process; determining the target gas generation amount threshold for the target battery cell based on the reference gas generation data and deformation time includes:

[0030] The difference between the deformation time and the preset time is used as the reference time;

[0031] The cumulative gas production corresponding to the reference time in the reference gas production data is used as the target gas production threshold.

[0032] In this embodiment, the difference between the deformation time and the preset time is used as the reference time, and the cumulative gas production corresponding to the reference time in the reference gas production data is used as the target gas production threshold. This allows for accurate determination of the exhaust timing based on the target gas production threshold, thus preventing plastic deformation of the target battery cell casing before exhaust.

[0033] In some embodiments, determining to vent the target battery cell includes:

[0034] The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; the activation storage location is used to activate the target battery cell.

[0035] The target battery cell is vented using the target venting device.

[0036] In this embodiment, the target battery cell is transferred from the activation storage location to the target venting device by a control scheduling device, and the target venting device is used to vent the target battery cell. This method enables intelligent venting of the target battery cell during the activation process, which helps to improve venting efficiency.

[0037] In some embodiments, the method further includes:

[0038] When the target venting device is detected to have completed venting of the target battery cell, the control and scheduling device will transfer the target battery cell from the target venting device to the activation storage location so that activation can continue.

[0039] In some embodiments, if activation is performed, the method further includes:

[0040] The target battery cell is formed using a target formation device so that it can continue to be formed in the formation storage area.

[0041] In some embodiments, before the control and scheduling device transfers the target battery cell from the activation storage location to the target venting device, the method further includes:

[0042] Controlling the target formation equipment to stop forming the target battery can help improve the formation effect.

[0043] Secondly, this application also provides a battery cell manufacturing apparatus, the apparatus comprising:

[0044] The first manufacturing module is used to house the bare battery cell and electrolyte inside the casing and seal the casing to obtain the target battery cell.

[0045] The second manufacturing module is used to activate the target battery cell. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

[0046] Thirdly, this application also provides a battery cell manufacturing control device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of any of the methods in the first aspect above.

[0047] Fourthly, this application also provides a battery cell manufacturing system, which includes the battery cell manufacturing control equipment as described in the third aspect above; wherein the battery cell manufacturing control equipment is used for:

[0048] The bare cell and electrolyte are contained inside the casing and the casing is sealed to obtain the target battery cell. The target battery cell is activated. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell should be vented at least once.

[0049] In some embodiments, the battery cell manufacturing system further includes: a scheduling device and a target exhaust device, wherein the battery cell manufacturing control device is specifically used for:

[0050] The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; the activation storage location is used to activate the target battery cell.

[0051] The target battery cell is vented using the target venting device.

[0052] In some embodiments, the battery cell manufacturing control device is further configured to: upon detecting that the target venting device has completed venting of the target battery cell, control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location.

[0053] In some embodiments, if activation is performed, the battery cell manufacturing system further includes a target formation device, and the battery cell manufacturing control device is further configured to: perform formation on a target battery cell using the target formation device.

[0054] In some embodiments, the target exhaust device includes:

[0055] A tray is used to hold the target battery cell;

[0056] A mobile drive mechanism is used to drive the exhaust mechanism to move in a preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell.

[0057] The venting mechanism is used to vent the target battery cell in the tray when the venting head is connected to the target battery cell.

[0058] The target exhaust device in this embodiment may include a tray for accommodating target battery cells, a moving drive mechanism, and an exhaust mechanism. The moving drive mechanism drives the exhaust mechanism to move in a preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell. The exhaust mechanism exhausts the target battery cell in the tray when the exhaust head docks with the target battery cell, thus realizing intelligent exhaust of the target battery cell and improving the exhaust efficiency.

[0059] In some embodiments, the exhaust mechanism includes:

[0060] The exhaust head is installed on the support frame;

[0061] An exhaust pipe is installed on the support frame and is connected to an exhaust head. It is used to discharge the gas in the target battery cell through the exhaust head and the exhaust pipe when the exhaust head is connected to the target battery cell.

[0062] In some embodiments, the motion drive mechanism includes:

[0063] A moving drive unit, connected to a support frame, is used to drive the support frame to move in a preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell.

[0064] In some embodiments, the motion drive mechanism further includes:

[0065] A reset elastic element is installed between the bottom frame and the support frame in the target exhaust device so that after the exhaust mechanism completes the exhaust of the target battery cell, the support frame can return to the preset initial position more quickly under the action of the reset elastic element.

[0066] In some embodiments, the tray includes a chassis and a sidewall disposed at the edge of the chassis. The tray is also used to apply a preset restraint pressure to the target battery cell during the process of the exhaust mechanism venting the target battery cell located on the chassis, so as to further improve the exhaust efficiency.

[0067] Fifthly, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in any of the first aspects above.

[0068] In a sixth aspect, this application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method described in any of the first aspects above.

[0069] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0070] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0071] Figure 1 is a schematic diagram of the application scenarios of the battery cell manufacturing method provided in some embodiments of this application;

[0072] Figure 2 is a schematic flowchart of a battery cell manufacturing method provided in some embodiments of this application;

[0073] Figure 3 is a flowchart illustrating the exhaust determination method provided in some embodiments of this application;

[0074] Figure 4 is a flowchart illustrating a method for determining the timing of exhaust gas according to some embodiments of this application;

[0075] Figure 5 is a schematic diagram of reference gas production data curves for the aging process of lithium iron phosphate batteries provided in some embodiments of this application;

[0076] Figure 6 is a flowchart illustrating the method for determining exhaust gas provided in some other embodiments of this application;

[0077] Figure 7 is a schematic flowchart of a battery cell manufacturing method provided in some other embodiments of this application;

[0078] Figure 8 is a schematic diagram of the structure of a battery cell manufacturing apparatus in some embodiments of this application;

[0079] Figure 9 is a schematic diagram of the structure of a battery cell manufacturing control device in some embodiments of this application;

[0080] Figure 10 is a schematic diagram of the structure of a battery cell manufacturing system provided in some embodiments of this application;

[0081] Figure 11 is a schematic diagram of the structure of a battery cell manufacturing system provided in some other embodiments of this application;

[0082] Figure 12 is a schematic diagram of the structure of a battery cell manufacturing system provided in some other embodiments of this application;

[0083] Figure 13 is a schematic diagram of the structure of the target exhaust device provided in some embodiments of this application;

[0084] Figure 14 is a schematic diagram of the operating logic of the target exhaust device provided in some embodiments of this application;

[0085] Figure 15 is a schematic flowchart of a battery cell manufacturing method provided in some other embodiments of this application. Detailed Implementation

[0086] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0087] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the term "comprising" and any variations thereof in the specification, claims and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0088] To facilitate understanding, some terms are first introduced and explained in the embodiments of this application.

[0089] Logistics for Assembly Line (or simply line-side): refers to the logistics services provided within the workshop for production line processing and manufacturing. It covers the entire process of materials from entering to leaving the workshop. This includes the handover of materials at the workshop entrance, storage in buffer areas, flow of materials at each workstation on the production line, and material movement between upstream and downstream workstations.

[0090] Formation: The initial charging process of a battery cell, involving the formation of a solid electrolyte interface (SEI) film and the activation process of gas generation. Formation typically includes pre-charge, charge-discharge cycles, and cutoff voltage control. The purpose of formation is to create stable lithium-ion storage and transport channels in the positive and negative electrode materials of a lithium-ion battery, thereby improving its cycle performance and capacity retention.

[0091] Aging: By storing battery cells at high or normal temperatures for a period of time, the electrolyte fully penetrates into the electrodes, and the chemical self-discharge and internal polarization of the battery cells are eliminated more quickly, improving the performance stability of the battery. At the same time, aging also helps to stabilize the SEI film (SEI film self-repair stabilization), forming a more relaxed and porous film structure, further improving the electrochemical performance of the battery.

[0092] The formation and aging processes can be collectively referred to as the battery activation process.

[0093] Black spots: During the charging process of a lithium-ion battery, lithium ions will be extracted from the positive electrode and inserted into the negative electrode. When there is gas to block the migration of lithium ions, black unintercalated areas are formed on the surface of the negative electrode.

[0094] Lithium plating: During the charging process of a lithium-ion battery, lithium ions are extracted from the positive electrode and inserted into the negative electrode. However, if abnormal conditions occur, preventing the extracted lithium ions from inserting into the negative electrode, they will deposit on the surface of the negative electrode, forming a gray substance, which is called lithium plating. Lithium plating is a type of battery degradation. Broadly speaking, lithium plating can be classified into five categories: lithium plating caused by insufficient negative electrode margin; lithium plating caused by the charging mechanism; lithium plating caused by abnormal lithium insertion paths; lithium plating caused by abnormal main materials; and lithium plating at fixed locations due to special reasons. Lithium plating not only degrades battery performance and significantly shortens cycle life, but also limits the battery's fast-charging capacity and may cause catastrophic consequences such as combustion and explosion.

[0095] Plastic deformation refers to the change in shape or size of a battery casing when subjected to external force, and the casing cannot return to its original state after the external force is removed. This deformation is irreversible, meaning that some energy is dissipated as heat during the deformation process, leading to a permanent change in the internal structure of the material.

[0096] Lithium-ion batteries are widely used in new energy vehicles, consumer electronics, and energy storage systems due to their advantages such as high energy density, rechargeability, safety, and environmental friendliness. However, the formation and / or aging processes during the manufacturing of lithium-ion battery cells generate gases. If these gases accumulate inside the battery cells and cannot be released in time, it can lead to lithium plating at the cell interfaces and / or increased self-discharge, severely affecting the battery's electrical performance.

[0097] To address the issue of timely venting of gas from inside a battery cell, this application proposes determining the method for at least one venting operation on the target battery cell based on reference gas generation data during the activation process and reference plastic deformation data of the casing. By comprehensively considering both reference gas generation data and reference plastic deformation data of the casing to determine the venting operation, the gas inside the target battery cell can be vented in a timely manner before the gas generation inside the casing causes the casing deformation to reach plastic deformation, thereby improving the battery's electrical performance.

[0098] For ease of understanding, the following embodiments of this application will introduce and explain the application scenarios of the battery cell manufacturing method provided in this application.

[0099] The application scenarios of this application may include, but are not limited to, battery cell manufacturing control equipment and scheduling equipment. For example, battery cell manufacturing control equipment may include, but are not limited to, any one of the following: target exhaust equipment, target formation equipment, and scheduling control equipment; scheduling equipment may include, but is not limited to, at least one of the following: stacker crane, rail-guided vehicle (RGV), and logistics conveyor belt.

[0100] It should be understood that, in the case where the battery cell manufacturing control equipment is a scheduling control equipment, the application scenario of this application embodiment may also include a target degassing equipment and a target formation equipment.

[0101] Another example is that the battery cell manufacturing control equipment can be an independent control equipment separate from the target exhaust equipment, target formation equipment, and scheduling control equipment.

[0102] It should be noted that, for ease of description, the battery cell manufacturing control equipment is used as a scheduling control equipment in the following embodiments of this application to introduce and describe the battery cell manufacturing method.

[0103] Figure 1 is a schematic diagram of the application scenarios of the battery cell manufacturing method provided in some embodiments of this application. As shown in Figure 1, the application scenarios of the embodiments of this application may include, but are not limited to, the battery cell manufacturing control device 10, the scheduling device 11, the target exhaust device 12, and the target formation device 13. Among them, the battery cell manufacturing control device 10 can control the scheduling device 11, the target exhaust device 12, and / or the target formation device 13, etc., according to the battery cell manufacturing method provided in the embodiments of this application.

[0104] For example, the battery cell manufacturing control device 10 can control the scheduling device 11 to transfer the target battery cell, the battery cell manufacturing control device 10 can control the target venting device 12 to vent the target battery cell, and / or, the battery cell manufacturing control device 10 can control the target formation device 13 to form the target battery cell.

[0105] It should be understood that different devices in the application scenarios of this application embodiment can be connected via wireless network or wired network.

[0106] Of course, other devices (e.g., electrolyte injection devices and / or sealing devices) may also be included in the application scenarios of this application embodiment, and will not be described in detail in this application embodiment.

[0107] In some embodiments, FIG2 is a schematic flowchart of a battery cell manufacturing method provided in some embodiments of this application. In this embodiment, the method is described using the battery cell manufacturing control device 10 in FIG1 as an example. As shown in FIG2, the method of this embodiment may include the following steps:

[0108] Step S201: The bare battery cell and electrolyte are housed inside the casing and the casing is sealed to obtain the target battery cell.

[0109] In this step, the battery cell manufacturing control equipment 10 can control the housing of the bare cell and electrolyte inside the casing and seal the casing to obtain the target battery cell.

[0110] It should be understood that the target battery cell in the embodiments of this application can be a general term, that is, the target battery cell can be a battery cell before activation, which can be a battery cell before formation, or a battery cell after formation and activation but before aging. The target battery cell in the embodiments of this application may include one target battery cell, or may include multiple target battery cells.

[0111] In one possible implementation, the battery cell manufacturing control equipment 10 can control the battery cell preparation equipment to place the bare cell inside the battery casing (or simply casing), inject the electrolyte into the casing, and seal the casing to prevent electrolyte leakage and intrusion of external impurities, so as to obtain the target battery cell.

[0112] In another possible implementation, the battery cell manufacturing control equipment 10 can place bare cells inside the casing by controlling a bare cell placement and positioning device, inject electrolyte into the casing by controlling an electrolyte injection device, and seal the casing by controlling a sealing device to prevent electrolyte leakage and the intrusion of external impurities, thereby obtaining the target battery cell. Exemplarily, the bare cell placement and positioning device may include, but is not limited to, a robotic arm, a conveyor belt, or a positioning fixture; the electrolyte injection device may include, but is not limited to, an acid filling machine, a pump, or other fluid delivery equipment; and the sealing device may include, but is not limited to, a heat sealing machine, a laser sealing device, an ultrasonic sealing machine, or other types of sealing equipment.

[0113] Of course, the battery cell manufacturing control equipment 10 can also use other methods to contain the bare cell and electrolyte inside the casing and seal the casing to obtain the target battery cell. Examples of this application will not be given in detail here.

[0114] Step S202: Activate the target battery cell. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, determine that the target battery cell should be vented at least once.

[0115] The activation described in this application can act on the positive and negative electrode materials of the battery, enabling them to form a stable active material layer and lithium-ion storage and transport channels, thereby improving the electrochemical performance and cycle stability of the battery. For example, activation may include, but is not limited to, formation and / or aging.

[0116] The reference gas production data of the target battery cell during the activation process involved in the embodiments of this application can be used to indicate the cumulative gas production (or reference cumulative gas production) of the target battery cell at different times during the activation process. For example, the reference gas production data in the embodiments of this application can be represented in the form of a data table, or in the form of a data curve, etc.

[0117] The reference plastic deformation data of the shell involved in the embodiments of this application can be used to indicate the deformation (or reference deformation) of the shell at different times. For example, the reference plastic deformation data in the embodiments of this application can be represented in the form of a data table, or in the form of a data curve, etc.

[0118] For example, in this embodiment of the application, the battery cell manufacturing control device 10 can receive reference gas generation data and reference plastic deformation data input by the user, or it can obtain reference gas generation data and reference plastic deformation data from other devices.

[0119] Of course, the battery cell manufacturing control equipment 10 can also acquire reference gas production data and reference plastic deformation data through other means.

[0120] In this step, the battery cell manufacturing control equipment 10 can control the activation of the target battery cell. Furthermore, during the activation process, the battery cell manufacturing control equipment 10 can combine the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing to determine that the target battery cell should be vented at least once, so that the gas inside the target battery cell can be vented in time before the gas generation inside the casing causes the deformation of the casing to reach the plastic deformation.

[0121] In summary, in this embodiment, the target battery cell is obtained by housing the bare cell and electrolyte inside a casing and sealing the casing. Further, the target battery cell is activated, and during the activation process, at least one venting operation is determined based on reference gas generation data of the target battery cell during activation and reference plastic deformation data of the casing. Therefore, in this embodiment, by determining the method of venting the target battery cell at least once based on reference gas generation data of the target battery cell during activation and reference plastic deformation data of the casing, the gas inside the target battery cell can be discharged in a timely manner, thereby improving battery electrical performance.

[0122] In some embodiments, Figure 3 is a flowchart illustrating a method for determining venting according to some embodiments of this application. Based on the above embodiments, this application provides an exemplary description of the relevant content in step S202, "determining to vent the target battery cell at least once based on reference gas generation data of the target battery cell during the activation process and reference plastic deformation data of the casing." As shown in Figure 3, the method of this application embodiment may include the following steps:

[0123] Step S2021: Based on the reference gas production data and the reference plastic deformation data of the shell, determine the timing of at least one venting operation.

[0124] In this step, the battery cell manufacturing control equipment 10 can determine the timing of at least one venting operation based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, so that the gas inside the target battery cell can be vented in time before the gas generation inside the casing causes the deformation of the casing to reach the plastic deformation.

[0125] In one possible implementation, the battery cell manufacturing control device 10 can determine the deformation time when the casing reaches plastic deformation based on the reference plastic deformation data of the casing, and determine the venting timing corresponding to at least one venting operation based on the reference gas generation data and the deformation time.

[0126] In this implementation, the battery cell manufacturing control equipment 10 can determine the deformation time corresponding to the plastic deformation of the casing based on the reference plastic deformation data of the casing.

[0127] For example, where the reference plastic deformation data can also be used to indicate the deformation time corresponding to the plastic deformation of the casing, the battery cell manufacturing control device 10 can directly determine the deformation time corresponding to the plastic deformation of the casing based on the reference plastic deformation data of the casing.

[0128] In another example, where the reference plastic deformation data can also be used to indicate the deformation threshold corresponding to the plastic deformation of the casing, the battery cell manufacturing control device 10 can determine the deformation time corresponding to the plastic deformation of the casing by comparing the deformation of the casing at different times indicated by the reference plastic deformation data of the casing with the deformation threshold corresponding to the plastic deformation of the casing.

[0129] Furthermore, the battery cell manufacturing control equipment 10 can determine the timing of at least one venting operation based on reference gas production data and deformation time.

[0130] For example, the battery cell manufacturing control equipment 10 can determine the target gas production threshold corresponding to the target battery cell based on reference gas production data and deformation time, so as to determine the venting timing corresponding to at least one venting operation based on the target gas production threshold. The target gas production threshold can be used to indicate the gas production threshold of the target battery cell before the deformation of the casing reaches plastic deformation; that is, the target gas production threshold can be referred to as a value close to the critical gas production threshold, where the critical gas production threshold is the gas production amount when the deformation of the target battery cell's casing reaches plastic deformation.

[0131] In another exemplary embodiment, the battery cell manufacturing control device 10 can obtain the exhaust timing corresponding to at least one exhaust operation output by inputting reference gas production data and deformation time into a first preset exhaust timing prediction model. The first preset exhaust timing prediction model may include, but is not limited to, a machine learning model.

[0132] As can be seen, in this implementation, the deformation time for the shell to reach plastic deformation is determined based on the reference plastic deformation data of the shell, and the exhaust timing corresponding to each exhaust is determined based on the reference gas generation data and the deformation time. Since the exhaust timing is determined by comprehensively considering the reference gas generation data and the deformation time, the exhaust timing can be determined more accurately, so that the gas inside the target battery cell can be discharged in time before the gas generation inside the shell causes the shell to reach plastic deformation each time.

[0133] In another possible implementation, the battery cell manufacturing control device 10 can obtain the exhaust timing corresponding to at least one exhaust event by inputting reference gas generation data and reference plastic deformation data of the casing into a second preset exhaust timing prediction model. The second preset exhaust timing prediction model may include, but is not limited to, a machine learning model.

[0134] Of course, the battery cell manufacturing control equipment 10 can also determine the timing of at least one venting operation by other means, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing.

[0135] Step S2022: When the venting time is detected each time, determine to vent the target battery cell.

[0136] In this step, the battery cell manufacturing control equipment 10 determines to vent the target battery cell each time the venting time is detected.

[0137] For example, if the venting timing determined in step S2021 includes a venting timing, the battery cell manufacturing control device 10 determines to vent the target battery cell when it detects that the venting timing has arrived.

[0138] In another example, when the exhaust timing determined in step S2021 includes multiple exhaust timings, the battery cell manufacturing control device 10 determines to exhaust the target battery cell each time the corresponding exhaust timing is detected.

[0139] In summary, in this embodiment, by determining the venting timing corresponding to each venting event based on reference gas generation data and reference plastic deformation data of the casing, and determining the venting method for the target battery cell each time the venting timing is detected, the gas inside the target battery cell can be vented more accurately and promptly, thereby further improving battery electrical performance. In this embodiment, the method of venting the target battery cell only when the venting timing is reached not only saves venting costs but also helps protect the electrolyte in the target battery cell.

[0140] In some embodiments, Figure 4 is a flowchart illustrating a method for determining the exhaust timing provided in some embodiments of this application. Based on the above embodiments, this application provides an exemplary description of the content related to "determining the exhaust timing corresponding to at least one exhaust based on reference gas production data and deformation time". As shown in Figure 4, the method of this application embodiment may include the following steps:

[0141] Step S401: Determine the target gas production threshold corresponding to the target battery cell based on the reference gas production data and deformation time.

[0142] The reference gas production data in the embodiments of this application can be used to indicate the cumulative gas production of the target battery cell at different times during the activation process.

[0143] The target gas production threshold in the embodiments of this application can be used to indicate the gas production threshold of the target battery cell before the deformation of the casing reaches plastic deformation.

[0144] In this step, the battery cell manufacturing control equipment 10 can determine the target gas production threshold corresponding to the target battery cell based on reference gas production data and deformation time. For example, in this embodiment, the target gas production threshold can be represented by gas production data.

[0145] Another example is that the target gas generation threshold in this embodiment can be represented by the residual space data of the target battery cell, wherein the residual space data of the target battery cell can refer to the residual volume obtained by subtracting the total volume of mechanical components such as the jelly-roll (JR), tabs, and flexible connections from the casing volume of the target battery cell. For example, the target gas generation threshold in this embodiment can be M times the residual space data of the target battery cell, where M can be an integer greater than 0.

[0146] In one possible implementation, the cumulative gas production corresponding to the deformation time in the reference gas production data is used as the maximum gas production threshold that the target battery cell can store; the difference between the maximum gas production threshold and the preset gas production is used as the target gas production threshold.

[0147] In this implementation, the battery cell manufacturing control device 10 can use the cumulative gas production amount corresponding to the deformation time in the reference gas production data as the maximum gas production amount threshold (or critical gas production amount threshold) that the target battery cell can store.

[0148] Furthermore, to prevent plastic deformation of the target battery cell casing before venting, in this embodiment, the battery cell manufacturing control device 10 can use the difference between the maximum gas production threshold and the preset gas production threshold as the target gas production threshold. This allows for accurate determination of the venting timing based on the target gas production threshold. For example, the preset gas production value can be related to the failure rate of the target venting equipment and / or the preset maintenance time. It should be understood that the preset gas production value in this embodiment is a relatively small value to further improve venting efficiency.

[0149] In another possible implementation, the difference between the deformation time and the preset time is used as the reference time; the cumulative gas production in the reference gas production data corresponding to the reference time is used as the target gas production threshold.

[0150] To prevent plastic deformation of the target battery cell casing before venting, in this implementation, the battery cell manufacturing control device 10 can use the difference between the deformation time and a preset time as a reference time. For example, the value of the preset time can be related to the failure rate of the target venting equipment and / or a preset maintenance time. It should be understood that the preset time in this embodiment is a relatively small value to further improve venting efficiency.

[0151] Furthermore, the battery cell manufacturing control equipment 10 can use the cumulative gas production amount corresponding to the reference time in the reference gas production data as the target gas production amount threshold, so that the exhaust timing corresponding to the exhaust can be accurately determined based on the target gas production amount threshold.

[0152] Of course, the battery cell manufacturing control equipment 10 can also determine the target gas production threshold corresponding to the target battery cell through other means based on the reference gas production data and deformation time.

[0153] Step S402: Based on the reference gas production data and the target gas production threshold, determine the timing of at least one exhaust.

[0154] In this step, the battery cell manufacturing control equipment 10 can determine the timing of each exhaust based on the reference gas production data and the target gas production threshold.

[0155] In one possible implementation, at least one target multiple of gas production is determined based on the cumulative gas production in the reference gas production data and the target gas production threshold; wherein the ratio of the target multiple of gas production to the target gas production threshold is an integer greater than 0, and the target multiple of gas production belongs to the cumulative gas production in the reference gas production data; the time corresponding to the at least one target multiple of gas production in the reference gas production data is respectively used as the exhaust timing.

[0156] In this implementation, the battery cell manufacturing control device 10 can take at least one cumulative gas production that is N times the target gas production threshold from the reference gas production data as the target multiple gas production, where N is an integer greater than 0.

[0157] Furthermore, the battery cell manufacturing control equipment 10 can use the time corresponding to each target multiple of gas production in the reference gas production data as the time for venting.

[0158] In some embodiments, if the target gas production rate is only one, the battery cell manufacturing control device 10 may also consider the end of activation as a time for venting.

[0159] For ease of understanding, the following embodiments of this application use the aging process of a 280Ah lithium iron phosphate battery as an example to illustrate the above implementation method.

[0160] Figure 5 is a schematic diagram of reference gas production data curves for the aging process of lithium iron phosphate batteries provided in some embodiments of this application. Assuming that the residual space data of the lithium iron phosphate battery is 30 ml and the target gas production threshold of the lithium iron phosphate battery is 1 times the residual space data of the lithium iron phosphate battery (i.e., the target gas production threshold is 30 ml), as shown in Figure 5, the battery cell manufacturing control device 10 can take the cumulative gas production (i.e., 30 ml) that is 1 times the target gas production threshold in the reference gas production data of the lithium iron phosphate battery as the target multiple gas production, and take the time (i.e., the 2nd hour) corresponding to the target multiple gas production in the reference gas production data as the time for one exhaust.

[0161] Furthermore, since there is only one gas production capacity for the target multiple, the battery cell manufacturing control equipment 10 can also use the end time of aging (i.e., the 48th hour) as a time for venting.

[0162] In another possible implementation, the battery cell manufacturing control device 10 can obtain the exhaust timing corresponding to at least one exhaust operation by inputting reference gas production data and a target gas production threshold into a third preset exhaust timing prediction model. The third preset exhaust timing prediction model may include, but is not limited to, a machine learning model.

[0163] Of course, the battery cell manufacturing control equipment 10 can also determine the timing of at least one venting operation by other means based on the reference gas production data and the target gas production threshold.

[0164] In summary, in this embodiment of the application, by determining the target gas production threshold corresponding to the target battery cell based on reference gas production data and deformation time, and by determining the exhaust timing corresponding to at least one exhaust based on reference gas production data and target gas production threshold, the target gas production threshold can be accurately determined by comprehensively considering reference gas production data and deformation time. This allows for the accurate determination of the exhaust timing corresponding to the exhaust by combining the reference gas production data and the target gas production threshold.

[0165] In some embodiments, FIG6 is a flowchart illustrating a method for determining venting according to other embodiments of this application. Based on the above embodiments, this application provides an exemplary description of the relevant content of "determining to vent the target battery cell" in step S2022. As shown in FIG6, the method of this application embodiment may include the following steps:

[0166] Step S601: The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; wherein, the activation storage location is used to activate the target battery cell.

[0167] For example, in the case of activation being formation in the embodiments of this application, the activation storage location can be the formation storage location.

[0168] In another exemplary case, in the case of aging in the embodiments of this application, the activation storage location can be the aging storage location.

[0169] In this step, each time the venting timing is detected, the battery cell manufacturing control device 10 can send a first transfer command to the scheduling device to control the scheduling device to transfer the target battery cell from the activation storage location to the target venting device. The first transfer command can be used to instruct the scheduling device to transfer the target battery cell from the activation storage location to the target venting device.

[0170] For example, when the battery cell manufacturing control device 10 is a scheduling control device, the battery cell manufacturing control device 10 can directly send a first transfer instruction to the scheduling device.

[0171] In another exemplary case, when the battery cell manufacturing control device 10 is a target exhaust device or a target formation device, the battery cell manufacturing control device 10 can indirectly send a first transfer instruction to the scheduling device through the scheduling control device. For example, the battery cell manufacturing control device 10 can send the first transfer instruction to the scheduling control device so that the scheduling control device can forward the first transfer instruction to the scheduling device.

[0172] Step S602: Use the target venting device to vent the target battery cell.

[0173] In this step, the battery cell manufacturing control equipment 10 can use the target venting equipment to vent the target battery cell.

[0174] For example, when the battery cell manufacturing control device 10 is a scheduling control device, the battery cell manufacturing control device 10 can control the target exhaust device to exhaust the target battery cell by directly sending an exhaust command to the target exhaust device. The exhaust command can be used to instruct the target exhaust device to exhaust the target battery cell.

[0175] In another example, when the battery cell manufacturing control device 10 is a target formation device, the battery cell manufacturing control device 10 can indirectly control the target exhaust device to exhaust the target battery cell by sending an exhaust command to the target exhaust device through a scheduling control device. For example, the battery cell manufacturing control device 10 can send the exhaust command to the scheduling control device so that the scheduling control device can forward the exhaust command to the target exhaust device.

[0176] In another example, when the battery cell manufacturing control device 10 is the target venting device, the battery cell manufacturing control device 10 can directly vent the target battery cell.

[0177] In some embodiments, when venting the target battery cell using the target venting device, the venting head in the target venting device is placed against the liquid injection port of the target battery cell or directly inserted into the casing to vent the gas inside the target battery cell.

[0178] For example, when the injection port of the target battery cell is sealed with a pin, the battery cell manufacturing control device 10 needs to control the robotic arm or other equipment to remove the pin located in the injection port of the target battery cell before using the target venting device to vent the target battery cell. This allows the venting head in the target venting device to be inserted into the housing through the injection port of the target battery cell, or the venting head in the target venting device to abut against the injection port, thereby achieving communication with the inside of the target battery cell to vent the target battery cell.

[0179] It should be noted that when the target venting device has completed the venting of the target battery cell, the battery cell manufacturing control device 10 can control the robotic arm or other equipment to resealably insert the pin into the liquid injection port located in the target battery cell.

[0180] In another example, when the liquid injection port of the target battery cell is sealed by a switch valve, when the battery cell manufacturing control device 10 vents the target battery cell using the target venting device, the venting head in the target venting device moves toward the interior of the target battery cell against the movable sealing column in the switch valve (an opening is formed on the switch valve), so that the venting head can communicate with the interior of the housing to vent the target battery cell.

[0181] It should be noted that when the target exhaust device completes the exhaust of the target battery cell, the battery cell manufacturing control device 10 can control the exhaust head of the target exhaust device to move away from the target battery cell. Furthermore, the reset element in the switch valve can control the movable sealing column to move toward the top of the target battery cell so that the movable sealing column can seal the opening on the switch valve again.

[0182] Of course, the battery cell manufacturing control equipment 10 can also vent the target battery cell using other methods, which will not be illustrated in this embodiment.

[0183] In summary, by controlling and scheduling equipment to transfer the target battery cell from the activation storage location to the target venting device, and then using the target venting device to vent the target battery cell, intelligent venting of the target battery cell is achieved during the activation process, which helps to improve venting efficiency.

[0184] In some embodiments, if activation in this application embodiment is formation, the battery cell manufacturing control device 10 can control the target formation device to stop forming the target battery before the control scheduling device transfers the target battery cell from the activation storage location to the target exhaust device, which is beneficial to improving the formation effect.

[0185] In some embodiments, when the battery cell manufacturing control device 10 detects that the target venting device has completed venting of the target battery cell, it can also control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location.

[0186] In this embodiment, when the battery cell manufacturing control device 10 detects that the target venting device has completed venting of the target battery cell, it can also send a second transfer instruction to the scheduling device to control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location so that activation can continue. The second transfer instruction can be used to instruct the scheduling device to transfer the target battery cell from the target venting device to the activation storage location.

[0187] It should be noted that the method by which the battery cell manufacturing control device 10 sends the second transfer instruction to the scheduling device can refer to the method by which the battery cell manufacturing control device 10 sends the first transfer instruction to the scheduling device in the above embodiment, and will not be repeated in this embodiment.

[0188] In one possible implementation, if activation is performed, the battery cell manufacturing control device 10 can also perform formation on the target battery cell using the target formation equipment after the control and scheduling device transfers the target battery cell from the target exhaust device to the formation storage location, so that the target battery cell can continue to be formed in the formation storage location.

[0189] For example, when the battery cell manufacturing control device 10 is a scheduling control device, the battery cell manufacturing control device 10 can control the target formation device to perform formation on the target battery cell by directly sending a formation command to the target formation device. The formation command can be used to instruct the target formation device to perform formation on the target battery cell.

[0190] In another example, when the battery cell manufacturing control device 10 is the target exhaust device, the battery cell manufacturing control device 10 can control the target formation device to form the target battery cell by indirectly sending formation instructions to the target formation device through the scheduling control device.

[0191] Another example is that when the battery cell manufacturing control equipment 10 is a target formation equipment, the battery cell manufacturing control equipment 10 can directly form the target battery cell.

[0192] Of course, the battery cell manufacturing control equipment 10 can also form the target battery cell using other methods with the help of the target formation equipment. Examples of these methods will not be given in this embodiment.

[0193] In another possible implementation, if activation is to be aging, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the target battery cell from the target exhaust equipment to the aging storage location, so that the target battery cell can continue to be left to age in the aging storage location.

[0194] In some embodiments, FIG7 is a schematic flowchart of a battery cell manufacturing method provided in other embodiments of this application. For ease of understanding, this application embodiment, in conjunction with the content of the above embodiments, takes the battery cell manufacturing control device 10 as a scheduling control device as an example to exemplarily describe the flow of the above battery cell manufacturing method. As shown in FIG7, the method of this application embodiment may include the following steps:

[0195] Step S701: The battery cell manufacturing control equipment 10 can acquire reference gas generation data and reference plastic deformation data of the target battery cell during the activation process.

[0196] Step S702: The battery cell manufacturing control equipment 10 can determine the venting timing corresponding to at least one venting of the target battery cell based on the reference gas generation data and the reference plastic deformation data of the casing.

[0197] Step S703: The battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the target battery cell to the activation storage location for activation.

[0198] Step S704: When the battery cell manufacturing control equipment 10 detects that the venting time has arrived, it controls the scheduling equipment to transfer the target battery cell from the activation storage location to the target venting device, and uses the target venting device to vent the target battery cell.

[0199] For example, in the case of activation to formation, the battery cell manufacturing control device 10 can also control the target formation device to stop forming the target battery before the control scheduling device transfers the target battery cell from the activation storage location to the target exhaust device.

[0200] In another example, when activation is converted to aging, the battery cell manufacturing control equipment 10 can directly control the scheduling equipment to transfer the target battery cell from the activation storage location to the target exhaust device.

[0201] In step S705, the battery cell manufacturing control device 10 can control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location to continue activation when it detects that the target venting device has completed venting of the target battery cell.

[0202] For example, in the case of activation to formation, the battery cell manufacturing control equipment 10 can also use the target formation equipment to continue to form the target battery cell so that the target battery cell can continue to form at the formation storage location.

[0203] In another example, when activation is converted to aging, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the target battery cell from the target exhaust equipment to the aging storage location, so that the target battery cell can continue to be left to age in the aging storage location.

[0204] Step S706: The battery cell manufacturing control device 10 can determine whether the target battery cell still has an exhaust timing corresponding to the next exhaust.

[0205] If it is determined that there is still an opportunity for the next venting cycle for the target battery cell, then return to step S704; if it is determined that there is no opportunity for the next venting cycle for the target battery cell, then proceed to step S707.

[0206] In step S707, after activation is completed, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the target battery cell to the next manufacturing process storage location.

[0207] In summary, in this embodiment, the battery cell manufacturing control equipment can determine the venting timing corresponding to at least one venting operation of the target battery cell based on the reference gas generation data and the reference plastic deformation data of the casing. Upon detecting that a venting timing has been reached, the control scheduling equipment transfers the target battery cell from the activation storage location to the target venting device for venting. Furthermore, upon detecting that the target venting device has completed venting of the target battery cell, the battery cell manufacturing control equipment can transfer the target battery cell from the target venting device to the activation storage location to continue activation. Therefore, this embodiment achieves one or more venting operations on the target battery cell during the activation process through intelligent scheduling, which is beneficial for improving venting efficiency.

[0208] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0209] Based on the same inventive concept, this application also provides a battery cell manufacturing apparatus for implementing the battery cell manufacturing method described above. The solution provided by this apparatus is similar to the solution described in the above method; therefore, the specific limitations in one or more battery cell manufacturing apparatus embodiments provided below can be found in the limitations of the battery cell manufacturing method described above, and will not be repeated here.

[0210] In some embodiments, FIG8 is a schematic diagram of the structure of a battery cell manufacturing apparatus in some embodiments of this application. The battery cell manufacturing apparatus provided in the embodiments of this application can be applied to a battery cell manufacturing control device. As shown in FIG8, the battery cell manufacturing apparatus in the embodiments of this application may include: a first manufacturing module 801 and a second manufacturing module 802.

[0211] The first manufacturing module 801 is used to house the bare battery cell and electrolyte inside the casing and seal the casing to obtain the target battery cell.

[0212] The second manufacturing module 802 is used to activate the target battery cell. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

[0213] In some embodiments, the second manufacturing module 802 may include:

[0214] The first determining unit is used to determine the timing of at least one venting operation based on reference gas production data and reference plastic deformation data of the shell.

[0215] The second determining unit is used to determine whether to vent the target battery cell each time the venting time is detected.

[0216] In some embodiments, the first determining unit may include:

[0217] The first determining subunit is used to determine the deformation time when the deformation of the shell reaches plastic deformation based on the reference plastic deformation data of the shell.

[0218] The second determining subunit is used to determine the timing of at least one exhaust based on reference gas production data and deformation time.

[0219] In some embodiments, the second determining subunit may be specifically used for:

[0220] Based on the reference gas production data and deformation time, determine the target gas production threshold corresponding to the target battery cell;

[0221] Based on the reference gas production data and the target gas production threshold, determine the timing of at least one exhaust.

[0222] In some embodiments, reference gas generation data is used to indicate the cumulative gas generation of the target battery cell at different times during the activation process; the second determining subunit may specifically be used for:

[0223] Based on the cumulative gas production in the reference gas production data and the target gas production threshold, at least one target multiple gas production is determined; wherein the ratio of the target multiple gas production to the target gas production threshold is an integer greater than 0, and the target multiple gas production belongs to the cumulative gas production in the reference gas production data.

[0224] The time corresponding to at least one target multiple of gas production in the reference gas production data is used as the exhaust timing.

[0225] In some embodiments, reference gas generation data is used to indicate the cumulative gas generation of the target battery cell at different times during the activation process; the second determining subunit may specifically be used for:

[0226] The cumulative gas production corresponding to the deformation time in the reference gas production data will be used as the maximum gas production threshold that the target battery cell can store.

[0227] The difference between the maximum gas production threshold and the preset gas production threshold is used as the target gas production threshold.

[0228] In some embodiments, reference gas generation data is used to indicate the cumulative gas generation of the target battery cell at different times during the activation process; the second determining subunit may specifically be used for:

[0229] The difference between the deformation time and the preset time is used as the reference time;

[0230] The cumulative gas production corresponding to the reference time in the reference gas production data is used as the target gas production threshold.

[0231] In some embodiments, the second determining unit may be specifically used for:

[0232] The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; the activation storage location is used to activate the target battery cell.

[0233] The target battery cell is vented using the target venting device.

[0234] In some embodiments of this application, the battery cell manufacturing apparatus may further include:

[0235] The transfer module is used to control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location when the target venting device is detected to have completed venting of the target battery cell.

[0236] In some embodiments, if activation is performed, the battery cell manufacturing apparatus of this application embodiment may further include:

[0237] A formation module is used to form target battery cells using target formation equipment.

[0238] In some embodiments, the second determining unit may also be used to: control the target formation device to stop forming the target battery.

[0239] The battery cell manufacturing apparatus provided in this application can be used to execute the technical solutions in the above-described battery cell manufacturing method embodiments of this application. Its implementation principle and technical effects are similar, and will not be repeated here.

[0240] Each module in the aforementioned battery cell manufacturing apparatus can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of the battery cell manufacturing control equipment in hardware form or independent of it, or they can be stored in the memory of the battery cell manufacturing control equipment in software form, so that the processor can call and execute the operations corresponding to each module.

[0241] In some embodiments, FIG9 is a schematic diagram of the structure of a battery cell manufacturing control device in some embodiments of this application. As shown in FIG9, the battery cell manufacturing control device provided in the embodiments of this application may include a processor, a memory, and a communication interface connected via a system bus. The processor of the battery cell manufacturing control device provides computing and control capabilities. The memory of the battery cell manufacturing control device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The communication interface of the battery cell manufacturing control device is used for wired or wireless communication with external devices. When the computer program is executed by the processor, it implements the technical solutions in the above-described embodiments of the battery cell manufacturing method of this application. The implementation principle and technical effects are similar and will not be repeated here.

[0242] Those skilled in the art will understand that the structure shown in Figure 9 is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the battery cell manufacturing control equipment to which the present application is applied. The specific battery cell manufacturing control equipment may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0243] In some embodiments, a battery cell manufacturing control device is also provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the technical solutions in the battery cell manufacturing method embodiments described above. The implementation principle and technical effects are similar, and will not be repeated here.

[0244] In some embodiments, FIG10 is a schematic diagram of the structure of a battery cell manufacturing system provided in some embodiments of this application. As shown in FIG10, an embodiment of this application provides a battery cell manufacturing system S, which may include the battery cell manufacturing control device 10 provided in the above embodiments. The battery cell manufacturing control device 10 can be used for:

[0245] The bare cell and electrolyte are contained inside the casing and the casing is sealed to obtain the target battery cell. The target battery cell is activated. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell should be vented at least once.

[0246] The battery cell manufacturing control equipment provided in this application can be used to execute the technical solutions in the above-described battery cell manufacturing method embodiments of this application. Its implementation principle and technical effects are similar, and will not be repeated here.

[0247] In some embodiments, FIG11 is a schematic diagram of the structure of a battery cell manufacturing system provided in other embodiments of this application. As shown in FIG11, the battery cell manufacturing system S of this application embodiment may further include: a scheduling device 11 and a target exhaust device 12. The battery cell manufacturing control device 10 may be specifically used for:

[0248] The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; the activation storage location is used to activate the target battery cell.

[0249] The target battery cell is vented using the target venting device.

[0250] It should be understood that when the battery cell manufacturing control device 10 is the target exhaust device 12, the battery cell manufacturing system S may include either the battery cell manufacturing control device 10 or the target exhaust device 12.

[0251] In some embodiments, the battery cell manufacturing control device can also be used to: control the scheduling device to transfer the target battery cell from the target venting device to the activation storage location when the target venting device is detected to have completed venting of the target battery cell.

[0252] In some embodiments, FIG12 is a schematic diagram of the structure of a battery cell manufacturing system provided in other embodiments of the present application. As shown in FIG12, if activation is performed, the battery cell manufacturing system S of the present application embodiment may further include a target formation device 13, and the battery cell manufacturing control device may further be used to: perform formation on a target battery cell using the target formation device.

[0253] It should be understood that when the battery cell manufacturing control device 10 is the target formation device 13, the battery cell manufacturing system S may include either the battery cell manufacturing control device 10 or the target formation device 13.

[0254] For ease of understanding, the structure of the target exhaust device 12 described above is illustrated in the following embodiments of this application.

[0255] In some embodiments, FIG13 is a schematic diagram of the structure of a target exhaust device provided in some embodiments of the present application. As shown in FIG13, the target exhaust device 12 in the embodiments of the present application may include: a tray 120, a moving drive mechanism 121 and an exhaust mechanism 122.

[0256] The tray 120 in this embodiment can be used to accommodate target battery cells. It should be understood that the term "target battery cell" in this embodiment can be a general term, which may include one target battery cell or multiple target battery cells.

[0257] The moving drive mechanism 121 in this embodiment can be used to drive the exhaust mechanism 122 to move along a preset direction D, so that the exhaust head 1221 in the exhaust mechanism 122 can dock with or separate from the target battery cell. The preset direction D may include, but is not limited to, the thickness direction of the tray 120.

[0258] It should be understood that the exhaust head 1221 in the exhaust mechanism 122 can be a general term, which may include one exhaust head or multiple exhaust heads. It should be noted that Figure 13 illustrates an example where the exhaust mechanism 122 includes multiple exhaust heads 1221.

[0259] In one possible implementation, when it is necessary to vent the target battery cell, the moving drive mechanism 121 can be used to drive the venting mechanism 122 to move downward along a preset direction D, so that the venting head 1221 in the venting mechanism 122 can dock with the target battery cell, so that the venting mechanism 122 can vent the target battery cell. It should be understood that when the venting head 1221 can dock with the target battery cell, the venting head 1221 abuts against the liquid injection port of the target battery cell or is directly inserted into the casing to expel the gas inside the target battery cell.

[0260] In another possible implementation, after the exhaust mechanism 122 has completed the exhaust of the target battery cell, the moving drive mechanism 121 can be used to drive the exhaust mechanism 122 to move upward along a preset direction D, so that the exhaust head 1221 in the exhaust mechanism 122 can be separated from the target battery cell, so as to facilitate subsequent operations on the target battery cell.

[0261] It should be understood that, when the injection port of the target battery cell is sealed with a pin and the vent head 1221 in the venting mechanism 122 is separated from the target battery cell, the battery cell manufacturing control equipment 10 can control a robotic arm or other equipment to resealably insert the pin into the injection port of the target battery cell. Alternatively, when the injection port of the target battery cell is sealed with a switch valve and the vent head 1221 in the venting mechanism 122 is separated from the target battery cell, the reset element in the switch valve can control the movable sealing post to move toward the top of the target battery cell, so that the movable sealing post resealably blocks the opening on the switch valve.

[0262] The venting mechanism 122 in this embodiment can be used to vent the target battery cell in the tray 120 when the venting head 1221 is docked with the target battery cell, so as to discharge the gas generated by the target battery cell during the activation process.

[0263] In some embodiments, the exhaust mechanism 122 of this application may include, but is not limited to, a negative pressure exhaust mechanism or a compression exhaust mechanism.

[0264] For example, when the liquid injection port of the target battery cell is sealed with a pin, the vent head 1221 can be inserted into the housing through the liquid injection port of the target battery cell, or the vent head 1221 can abut against the liquid injection port to achieve communication with the inside of the target battery cell, so as to vent the target battery cell.

[0265] In another example, when the liquid filling port of the target battery cell is sealed by a switching valve, the venting head 1221 will move towards the interior of the target battery cell against the movable sealing post in the switching valve (an opening is formed on the switching valve) so that the venting head 1221 can communicate with the interior of the housing to vent the target battery cell.

[0266] In summary, the target exhaust device in this application embodiment may include a tray for accommodating the target battery cell, a moving drive mechanism, and an exhaust mechanism. The moving drive mechanism drives the exhaust mechanism to move in a preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell. The exhaust mechanism exhausts the target battery cell in the tray 120 when the exhaust head docks with the target battery cell, thereby realizing intelligent exhaust of the target battery cell and improving the exhaust efficiency.

[0267] For ease of understanding, the structure of the exhaust mechanism 122 described above will be further explained in the following embodiments of this application.

[0268] In some embodiments, as shown in FIG13, the exhaust mechanism 122 of this application embodiment may include, but is not limited to: an exhaust head 1221 disposed on the support frame 1222; and an exhaust pipe 1223 disposed on the support frame 1222, wherein the exhaust pipe 1223 may be connected to the exhaust head 12221 and may be used to exhaust the gas in the target battery cell through the exhaust head 12221 and the exhaust pipe 1223 when the exhaust head 12221 is connected to the target battery cell, thereby realizing the exhaust of the target battery cell.

[0269] The support frame 1222 in this embodiment can be used to uniformly fix and support the exhaust head 1221 and the exhaust pipe 1223, so that the exhaust head 1221 and the exhaust pipe 1223 can be moved along the preset direction D under the action of the moving drive mechanism 121, which facilitates the precise control of the exhaust head 1221 and the exhaust pipe 1223.

[0270] For example, when there are multiple exhaust heads 1221, the exhaust pipe 1223 can be connected to each exhaust head 1221 in a one-to-one correspondence, or one exhaust pipe 1223 can be connected to multiple exhaust heads 1221 in a corresponding correspondence. The specific connection situation can be set according to actual needs.

[0271] It should be understood that the other end of the exhaust pipe 1223 in this embodiment of the application may also be connected to an external air extraction drive.

[0272] For example, when the exhaust mechanism 122 is a negative pressure exhaust mechanism, the pumping drive may include, but is not limited to, a vacuum pump or a liquid ring pump. It should be understood that the negative pressure value of the negative pressure exhaust mechanism in this embodiment may be positively correlated with the gas production rate of the target battery cell and / or the magnitude of casing deformation. For example, the range of the negative pressure value of the negative pressure exhaust mechanism may include, but is not limited to, -1 kPa to -99 kPa.

[0273] In another exemplary case, when the exhaust mechanism 122 is a compression exhaust mechanism, the suction drive component may include, but is not limited to, a suction drive unit and a compression unit. The suction drive unit may include, but is not limited to, a motor, a cylinder, or a hydraulic cylinder, and the compression unit may include, but is not limited to, a compression roller or a compression plate. It should be understood that the suction drive unit can be used to drive the compression unit to perform reciprocating or rotary motion, thereby achieving the compression and discharge of gas.

[0274] For ease of understanding, the structure of the above-described mobile drive mechanism 121 will be further described in the following embodiments of this application.

[0275] In some embodiments, as shown in FIG13, the mobile drive mechanism 121 of this application embodiment may include, but is not limited to, a mobile drive member 1211, wherein the mobile drive member 1211 may be connected to the support frame 1222 and used to drive the support frame 1222 to move along a preset direction D so that the exhaust head 1221 in the exhaust mechanism 122 can dock with or separate from the target battery cell.

[0276] For example, in this embodiment of the application, the moving drive 1211 can drive the support frame 1222 to move downward along a preset direction D so that the exhaust head 1221 in the exhaust mechanism 122 can dock with the target battery cell so as to exhaust the target battery cell.

[0277] In another exemplary embodiment, the moving drive 1211 in this application embodiment can drive the support frame 1222 to move upward along a preset direction D, so that the exhaust head 1221 in the exhaust mechanism 122 can be separated from the target battery cell, so as to facilitate subsequent other operations on the target battery cell.

[0278] In some embodiments, the moving drive 1211 in this application may include, but is not limited to, any of the following: a cylinder, an electric cylinder, a hydraulic cylinder, a pneumatic motor, or an electric motor.

[0279] For example, the moving drive unit 1211 in this embodiment may include, but is not limited to, a power supply unit 1211A and a connecting unit 1211B, wherein the connecting unit 1211B may be disposed between the power supply unit 1211A and the support frame 1222. The power supply unit 1211A may be used to provide power to drive the support frame 1222 to move along a preset direction D, and the connecting unit 1211B may be used to drive the support frame 1222 to move along the preset direction D under the action of the power supply unit 1211A.

[0280] For example, if the moving drive 1211 is a cylinder, the power supply unit 1211A can be a cylinder barrel, and the connecting unit 1211B can be a cylinder rod.

[0281] For example, if the moving drive 1211 is an electric cylinder, the power supply unit 1211A can be an electric cylinder barrel, and the connecting unit 1211B can be an electric cylinder rod.

[0282] In some embodiments, the mobile drive mechanism 121 in this application embodiment may further include a reset elastic member 1212. The reset elastic member 1212 may be disposed between the bottom frame 123 in the target exhaust device and the support frame 1222 in the exhaust mechanism 122, so that after the exhaust mechanism 122 completes the exhaust of the target battery cell, the support frame 1222 can return to the preset initial position more quickly under the action of the reset elastic member 1212.

[0283] For ease of understanding, the structure of the tray 120 described above will be further explained in the following embodiments of this application.

[0284] For example, in order to further improve the exhaust efficiency, the tray 120 in this embodiment can be a pressurizable tray such as a restraint tray or an airbag tray.

[0285] In some embodiments, as shown in FIG13, the tray 120 in this application embodiment may include, but is not limited to, a chassis 1201 and a sidewall 1202 disposed on the edge of the chassis. Exemplarily, the chassis 1201 and / or sidewall 1202 of the tray 120 may be disposed on the bottom frame 123 of the target exhaust device 12 via a support arm 124 in the target exhaust device 12. It should be understood that the number of support arms 124 may be set according to the shape and structure of the tray 120 and / or the weight of the target battery cell, etc., and is not limited in this application embodiment.

[0286] The tray 120 in this embodiment can also be used to apply a preset restraint pressure to the target battery cell during the process of the exhaust mechanism 122 venting the target battery cell located on the chassis 1201, so as to further improve the exhaust efficiency.

[0287] For example, the tray 120 involved in this application embodiment may be provided with a pressure member (not shown in FIG13) for applying a preset restraint pressure to the target battery cell. It should be noted that the pressure member in this application embodiment may also be provided at other positions of the tray 120. The specific settings may be made according to the shape and structure of the tray 120, etc., and will not be described in detail in this application embodiment.

[0288] It should be understood that the preset restraint pressure in the embodiments of this application can be positively correlated with the amount of gas produced by the target battery cell and / or the amount of casing deformation. For example, assuming that the amount of gas produced by the target battery cell is relatively small and the casing deformation is relatively small, the preset restraint pressure can be a relatively small pressure value. As another example, assuming that the amount of gas produced by the target battery cell is relatively large and / or the casing deformation is relatively large, the preset restraint pressure can be a relatively large pressure value.

[0289] For example, the range of preset restraint pressure in the embodiments of this application may include, but is not limited to, 0.01 MPa to 0.60 MPa.

[0290] In some embodiments, for ease of understanding, the operating logic of the target exhaust device 12 is briefly described in conjunction with the content of the above embodiments. Figure 14 is a schematic diagram of the operating logic of the target exhaust device provided in some embodiments of this application. As shown in Figure 14, the operating logic of the embodiments of this application may include the following steps:

[0291] Step S1401: When the pallet 120 containing the target battery cell is detected to be entering the warehouse, the pallet 120 is controlled to apply a preset restraint pressure to the target battery cell.

[0292] Step S1402: Control the moving drive mechanism 121 to drive the exhaust mechanism 122 to move downward along the preset direction D so that the exhaust head 1221 in the exhaust mechanism 122 docks with the target battery cell.

[0293] Step S1403: With the exhaust head 1221 connected to the target battery cell, control the exhaust mechanism 122 to exhaust the target battery cell in the tray 120.

[0294] Step S1404: After the exhaust mechanism 122 has completed the exhaust of the target battery cell, control the moving drive mechanism 121 to drive the exhaust mechanism 122 to move upward along the preset direction D, so that the exhaust head 1221 in the exhaust mechanism 122 is separated from the target battery cell.

[0295] Step S1405: Control tray 120 to stop applying preset restraint pressure to the target battery cell.

[0296] It should be understood that after the control tray 120 stops applying the preset restraint pressure to the target battery cell, the battery cell manufacturing control equipment can control the scheduling equipment to remove the tray 120 containing the target battery cell from the warehouse, so as to facilitate subsequent operations on the target battery cell.

[0297] For example, the execution entity of each step in Figure 14 above can be the battery cell manufacturing control device 10, or it can be the control device in the target exhaust device; of course, it can also be other devices, which will not be described one by one in this embodiment.

[0298] In some embodiments, for ease of understanding, this application uses the battery cell manufacturing control device 10 as a scheduling control device, the exhaust mechanism 122 in the target exhaust device as a negative pressure exhaust mechanism, and the aging process of the lithium iron phosphate 280Ah battery shown in FIG. 5 as an example to further illustrate the process of the above-mentioned battery cell manufacturing method. FIG. 15 is a schematic flowchart of a battery cell manufacturing method provided in some other embodiments of this application. As shown in FIG. 15, the method of this application embodiment may include the following steps:

[0299] Step S1501: The battery cell manufacturing control equipment 10 can acquire reference gas generation data and reference plastic deformation data of the casing during the activation process of lithium iron phosphate batteries.

[0300] In step S1502, the battery cell manufacturing control equipment 10 can determine the timing of the two venting operations for the lithium iron phosphate battery based on the reference gas generation data and the reference plastic deformation data of the casing.

[0301] For example, the battery cell manufacturing control device 10 can use the 2nd hour as the first time to vent air and the end time of aging (i.e., the 48th hour) as the second time to vent air.

[0302] Step S1503: The battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the lithium iron phosphate battery to the aging storage location for aging.

[0303] It should be understood that the aging process begins when the lithium iron phosphate battery is transferred to the aging storage location. This is the starting point of the aging process (i.e., hour 0).

[0304] In step S1504, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the lithium iron phosphate battery from the aging storage location to the target exhaust device when the first exhaust timing (i.e., the 2nd hour) is detected, and then use the target exhaust device to exhaust the lithium iron phosphate battery.

[0305] For example, during the process of venting the lithium iron phosphate battery by the target venting device, the tray 120 in the target venting device can apply a preset restraint pressure of 0.01 MPa to 0.60 MPa to the target battery cell, and when the negative pressure venting mechanism in the target venting device vents the target battery cell in the tray 120, the range of the negative pressure value of the negative pressure venting mechanism can include, but is not limited to, -1 kPa to -99 kPa, and / or the negative pressure time can include, but is not limited to, 10 s to 600 s.

[0306] In step S1505, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the lithium iron phosphate battery from the target exhaust equipment to the aging storage location to continue aging after detecting that the target exhaust equipment has completed the exhaust of the lithium iron phosphate battery.

[0307] For example, when the exhaust mechanism 122 in the target exhaust device completes the exhaust of the target battery cell, the moving drive mechanism 121 in the target exhaust device can drive the exhaust mechanism 122 to move upward along a preset direction D, so that the exhaust head 1221 in the exhaust mechanism 122 separates from the target battery cell, and the tray 120 stops applying a preset restraint pressure to the target battery cell.

[0308] In step S1506, the battery cell manufacturing control equipment 10 can control the scheduling equipment to transfer the lithium iron phosphate battery from the aging storage location to the target exhaust device when the second exhaust timing (i.e., the 48th hour) is detected, and then use the target exhaust device to exhaust the lithium iron phosphate battery.

[0309] Step S1507: When the target exhaust device has completed the exhaust of the lithium iron phosphate battery, the battery cell manufacturing control device 10 can control the scheduling device to transfer the lithium iron phosphate battery to the next manufacturing process storage location.

[0310] It should be noted that the specific implementation of each step in the embodiments of this application can be referred to the relevant content in the corresponding embodiments of this application above, and will not be repeated here.

[0311] In some embodiments, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, it implements the technical solutions in the above-described embodiments of the battery cell manufacturing method of this application. The implementation principle and technical effects are similar, and will not be repeated here.

[0312] In some embodiments, a computer program product is provided, including a computer program that, when executed by a processor, implements the technical solutions in the above-described battery cell manufacturing method embodiments of this application. The implementation principle and technical effects are similar and will not be repeated here.

[0313] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The processors involved in the embodiments provided in this application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited thereto.

[0314] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for manufacturing a single battery cell, wherein, The method includes: The bare battery cell and electrolyte are housed inside a casing, and the casing is then sealed to obtain the target battery cell. The target battery cell is activated, and during the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

2. The method according to claim 1, wherein, The step of determining to perform at least one venting operation on the target battery cell based on reference gas generation data of the target battery cell during the activation process and reference plastic deformation data of the casing includes: Based on the reference gas production data and the reference plastic deformation data of the shell, determine the timing of the at least one venting operation; Each time the venting timing is detected, it is determined that the target battery cell should be vented.

3. The method according to claim 2, wherein, Determining the timing of the at least one venting operation based on the reference gas production data and the reference plastic deformation data of the shell includes: The deformation time at which the deformation of the shell reaches plastic deformation is determined based on the reference plastic deformation data of the shell. Based on the reference gas production data and the deformation time, the timing of the at least one venting operation is determined.

4. The method according to claim 3, wherein, Determining the exhaust timing corresponding to the at least one exhaust based on the reference gas production data and the deformation time includes: Based on the reference gas production data and the deformation time, the target gas production threshold corresponding to the target battery cell is determined; Based on the reference gas production data and the target gas production threshold, the timing of the at least one exhaust is determined.

5. The method according to claim 4, wherein, The reference gas production data is used to indicate the cumulative gas production of the target battery cell at different times during the activation process. Determining the exhaust timing corresponding to the at least one exhaust based on the reference gas production data and the target gas production threshold includes: Based on the cumulative gas production in the reference gas production data and the target gas production threshold, at least one target multiple gas production is determined; wherein the ratio of the target multiple gas production to the target gas production threshold is an integer greater than 0, and the target multiple gas production belongs to the cumulative gas production in the reference gas production data. The time corresponding to at least one of the target multiples of gas production in the reference gas production data is respectively taken as the exhaust timing.

6. The method according to claim 4 or 5, wherein, The reference gas production data is used to indicate the cumulative gas production of the target battery cell at different times during the activation process. The step of determining the target gas production threshold corresponding to the target battery cell based on the reference gas production data and the deformation time includes: The cumulative gas production amount corresponding to the deformation time in the reference gas production data is used as the maximum gas production amount threshold that the target battery cell can store. The difference between the maximum gas production threshold and the preset gas production threshold is used as the target gas production threshold.

7. The method according to claim 4 or 5, wherein, The reference gas production data is used to indicate the cumulative gas production of the target battery cell at different times during the activation process. The step of determining the target gas production threshold corresponding to the target battery cell based on the reference gas production data and the deformation time includes: The difference between the deformation time and the preset time is used as the reference time; The cumulative gas production amount corresponding to the reference time in the reference gas production data is used as the target gas production threshold.

8. The method according to any one of claims 2-7, wherein, The step of determining to vent the target battery cell includes: The control and scheduling equipment transfers the target battery cell from the activation storage location to the target exhaust device; wherein, the activation storage location is used to activate the target battery cell; The target battery cell is vented using the target venting device.

9. The method according to claim 8, wherein, The method further includes: If the target exhaust device is detected to have completed exhausting the target battery cell, the scheduling device is controlled to transfer the target battery cell from the target exhaust device to the activation storage location.

10. The method according to claim 9, wherein, If the activation is a formation, the method further includes: The target battery cell is formed using a target formation device.

11. The method according to claim 10, wherein, Before the control and scheduling device transfers the target battery cell from the activation storage location to the target exhaust device, the method further includes: The target formation device is controlled to stop forming the target battery.

12. A battery cell manufacturing apparatus, wherein, The device includes: The first manufacturing module is used to house the bare battery cell and electrolyte inside the casing and seal the casing to obtain the target battery cell. The second manufacturing module is used to activate the target battery cell. During the activation process, based on the reference gas generation data of the target battery cell during the activation process and the reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

13. A battery cell manufacturing control device, comprising a memory and a processor, wherein the memory stores a computer program, wherein, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1-11.

14. A battery cell manufacturing system, wherein, The battery cell manufacturing system includes the battery cell manufacturing control equipment as described in claim 13; wherein the battery cell manufacturing control equipment is used for: The bare battery cell and electrolyte are housed inside a casing and the casing is sealed to obtain a target battery cell. The target battery cell is then activated. During the activation process, based on reference gas generation data of the target battery cell during the activation process and reference plastic deformation data of the casing, it is determined that the target battery cell will be vented at least once.

15. The battery cell manufacturing system according to claim 14, wherein, The battery cell manufacturing system further includes: a scheduling device and a target exhaust device, wherein the battery cell manufacturing control device is specifically used for: The scheduling device is controlled to transfer the target battery cell from the activation storage location to the target exhaust device; wherein, the activation storage location is used to activate the target battery cell; The target battery cell is vented using the target venting device.

16. The battery cell manufacturing system according to claim 15, wherein, The battery cell manufacturing control device is further configured to: when it is detected that the target exhaust device has completed exhausting the target battery cell, control the scheduling device to transfer the target battery cell from the target exhaust device to the activation storage location.

17. The battery cell manufacturing system according to claim 16, wherein, If the activation is a formation, the battery cell manufacturing system further includes a target formation device, and the battery cell manufacturing control device is further used to: perform the formation on the target battery cell using the target formation device.

18. The battery cell manufacturing system according to any one of claims 15-17, wherein, The target exhaust device includes: A tray for holding the target battery cell; A mobile drive mechanism is used to drive the exhaust mechanism to move along a preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell. An exhaust mechanism is used to exhaust air from the target battery cell in the tray when the exhaust head is docked with the target battery cell.

19. The battery cell manufacturing system according to claim 18, wherein, The exhaust mechanism includes: The exhaust head is disposed on the support frame; An exhaust pipe is provided on the support frame and is connected to the exhaust head. When the exhaust head is connected to the target battery cell, the gas in the target battery cell is discharged through the exhaust head and the exhaust pipe.

20. The battery cell manufacturing system according to claim 19, wherein, The movement drive mechanism includes: A movable drive component, connected to the support frame, is used to drive the support frame to move along the preset direction so that the exhaust head in the exhaust mechanism can dock with or separate from the target battery cell.

21. The battery cell manufacturing system according to claim 20, wherein, The motion drive mechanism also includes: A reset elastic element is disposed between the bottom frame and the support frame in the target exhaust device.

22. The battery cell manufacturing system according to any one of claims 18-21, wherein, The tray includes a chassis and a sidewall disposed at the edge of the chassis. The tray is also used to apply a preset restraint pressure to the target battery cell during the process of the exhaust mechanism venting the target battery cell located on the chassis.

23. A computer-readable storage medium having a computer program stored thereon, wherein, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1-11.

24. A computer program product comprising a computer program, wherein, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1-11.

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