Battery cell injection system and method

Abstract

The present application discloses a liquid injection system and method for a battery cell, and the liquid injection method for the battery cell is applied to a host computer, wherein the liquid injection method for the battery cell comprises: in response to the battery cell to be injected arriving at the liquid injection station, obtaining the position memory information corresponding to the battery cell in the tray; determining the actual liquid reserve amount and the set liquid reserve amount corresponding to the liquid injection mechanism deployed on the liquid injection station; obtaining the liquid injection data of the battery cell when the difference between the actual liquid reserve amount and the set liquid reserve amount is less than or equal to the preset deviation value; wherein the liquid injection data is obtained by the liquid injection mechanism injecting the battery cell based on the actual liquid reserve amount and the position memory information. In this way, the liquid injection stability and efficiency of the battery cell can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery cell injection system and method. Background Art

[0002] In the related art, when the battery cell enters the liquid injection process for liquid injection, the actual liquid reserve amount provided by the liquid injection mechanism usually deviates from the set liquid reserve amount, and the size of the deviation value will directly affect the liquid injection data of the battery cell, thereby affecting the stability of the battery cell liquid injection. Summary of the invention

[0003] The main purpose of the embodiments of the present application is to provide a battery cell injection system and method, aiming to improve the injection stability and efficiency of the battery cell.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application provides a liquid injection method for a battery cell, which is applied to a host computer. The liquid injection method includes:

[0005] In response to the battery cell to be injected arriving at the injection station, the position memory information corresponding to the battery cell in the tray is obtained; the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism deployed at the injection station are determined; when the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value, the injection data of the battery cell is obtained; wherein the injection data is obtained by the injection mechanism when injecting the battery cell based on the actual reserve liquid volume and the position memory information.

[0006] Through the above scheme, on the one hand, when the deviation between the actual reserve liquid volume and the set reserve liquid volume of the injection mechanism meets a certain value, injection is carried out to ensure the stability and efficiency of the injection; on the other hand, a more specific battery cell position can be obtained through position memory information, further improving the injection efficiency and accuracy of the battery cell.

[0007] In an embodiment of the present application, in response to the battery cell to be injected arriving at the injection station, obtaining the position memory information corresponding to the battery cell in the tray includes: in response to the battery cell arriving at the injection station, obtaining the tray code of the tray; in a tray data table, determining the position memory information associated with the tray code; wherein the tray data table is obtained when the battery cell is at a code scanning station, and the code scanning station is a station before the injection station.

[0008] Through the above scheme, based on the obtained pallet code, the associated position memory information is obtained from the previously stored pallet data table. In this way, on the basis of being able to improve the efficiency of obtaining the position memory information, parameter support is provided for the subsequent battery cell injection.

[0009] In an embodiment of the present application, in response to the battery cell arriving at the injection station, obtaining the tray code of the tray includes: in response to the battery cell arriving at the injection station, obtaining a liquid preparation scanning signal sent by a controller; based on the liquid preparation scanning signal, controlling a scanning mechanism to scan the tray to obtain the tray code. Through the above scheme, based on the interaction between multiple devices, it is possible to realize intelligent acquisition of the tray code of the tray, so as to improve the efficiency of obtaining the tray code.

[0010] In an embodiment of the present application, determining the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism deployed on the injection station includes: receiving a reserve liquid signal carrying the set reserve liquid volume sent by a controller; based on the reserve liquid signal, controlling the injection mechanism to prepare liquid, and after the injection mechanism finishes preparing liquid, determining the current reserve liquid volume of the injection mechanism as the actual reserve liquid volume.

[0011] Through the above scheme, based on the corresponding reserve liquid signal, the set reserve liquid volume and the actual injection volume are obtained in sequence, which not only improves the efficiency and accuracy of the obtained set reserve liquid volume and actual injection volume, but also provides a parameter basis for subsequent battery cell injection.

[0012] In an embodiment of the present application, the injection method further includes: in response to the battery cell being in a stationary position in a stationary mechanism, reading the stationary data of the battery cell; determining the injection data of the battery cell and the stationary data of the battery cell as the process data of the battery cell in the injection process; wherein the stationary position is a position after the injection position. Through the above scheme, on the one hand, the battery cell can be sequentially transferred to multiple positions in the injection process, making the transportation of the battery cell intelligent; on the other hand, the parameters of the battery cell at different positions in the injection process can be obtained in real time, so as to provide more comprehensive battery cell injection data.

[0013] In the embodiment of the present application, in response to the battery cell being in the stationary position in the stationary mechanism, reading the stationary data of the battery cell includes: in response to the battery cell being in the stationary position for a preset time, receiving a read signal sent by a controller; based on the read signal, reading the battery cell parameters corresponding to the battery cell after the stationary position to obtain the stationary data. Through the above scheme, the stationary data of the battery cell being transported to the stationary position can be obtained, thereby providing parameter support for the subsequent acquisition of more comprehensive injection data of the battery cell in the injection process.

[0014] In an embodiment of the present application, the injection data at least includes: injection rate, injection time and vacuuming time, the static data at least includes: static time and voltage parameters, and the injection method further includes: based on the battery cell code of the battery cell, writing the injection rate, the injection time, the vacuuming time, the static time and the voltage parameters into the battery cell data table to update the battery cell data table; wherein the battery cell code is obtained when the battery cell is in a code reading station; the code reading station is a station before the injection station.

[0015] Through the above scheme, the relevant data in the battery cell data table is updated in real time based on the battery cell code, so as to realize the storage of the process data of the battery cell in the liquid injection process, thereby providing parameter support for subsequent viewing or related operations on the battery cell.

[0016] In an embodiment of the present application, in response to the battery cell to be injected arriving at the injection station, obtaining the position memory information corresponding to the battery cell in the tray includes: presenting an injection display interface; wherein the injection display interface includes an injection data box and a reserve liquid control; in response to the battery cell arriving at the injection station, displaying the position memory information corresponding to the battery cell in the tray in the injection data box; determining the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism deployed at the injection station includes: in response to a trigger for the reserve liquid control, displaying the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism in the injection data box; obtaining the injection data of the battery cell when the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value includes: in response to the difference between the actual reserve liquid volume and the set reserve liquid volume being less than or equal to a preset deviation value, displaying the injection data of the battery cell in the injection data box.

[0017] Through the above scheme, on the one hand, when the deviation between the actual reserve liquid volume and the set reserve liquid volume of the liquid injection mechanism meets a certain value, the liquid injection mechanism will display the injection data of the relevant battery cell accordingly while injecting liquid into the battery cell, thereby ensuring the stability and efficiency of the liquid injection; on the other hand, a more specific battery cell position can be obtained through the position memory information, thereby further improving the injection efficiency and accuracy of the battery cell.

[0018] In an embodiment of the present application, the injection method further includes: in response to the battery cell being in a stationary position in a stationary mechanism, displaying the static data of the battery cell in the injection data frame; and displaying process data in the injection data frame; wherein the process data includes the injection data of the battery cell and the static data of the battery cell. Through the above scheme, the injection data and static data of the battery cell are correspondingly displayed in the injection data frame, so that the operator of the upper computer can promptly know the process data of the battery cell in the injection process, and can promptly perform relevant analysis and operations based on the displayed data.

[0019] The embodiment of the present application also provides a liquid injection system for a battery cell, the liquid injection system comprising: a host computer, a controller, and a liquid injection mechanism, wherein:

[0020] In response to the battery cell to be injected arriving at the injection station, the host computer obtains the position memory information corresponding to the battery cell in the tray under the action of the controller; the host computer determines the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism; when the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value, the host computer obtains the injection data of the battery cell; wherein the injection data is obtained by the injection mechanism injecting the battery cell under the action of the controller based on the actual reserve liquid volume and the position memory information.

[0021] The embodiment of the present application provides a method and system for injecting liquid into a battery cell, wherein, first, the battery cell to be injected that arrives at the injection station is obtained, and the corresponding position memory information in the tray carrying it is obtained, and the set liquid reserve amount and the actual liquid reserve amount of the injection mechanism that injects liquid into the battery cell at the injection station are determined; then, when the difference between the actual liquid reserve amount and the set liquid reserve amount is less than or equal to the preset deviation value, the injection data of the battery cell is obtained; wherein, the injection data is obtained by the injection mechanism injecting liquid into the battery cell based on the position memory information and the actual liquid reserve amount. In this way, on the one hand, when the deviation between the actual liquid reserve amount and the set liquid reserve amount of the injection mechanism meets a certain value, the injection is carried out, which can ensure the stability and efficiency of the injection; on the other hand, a more specific battery cell position can be obtained through the position memory information, further improving the injection efficiency and accuracy of the battery cell.

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 1 ;

[0025] Figure 2 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 2 ;

[0026] Figure 3 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 3 ;

[0027] Figure 4 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 4 ;

[0028] Figure 5 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 5 ;

[0029] Figure 6 A schematic diagram of a liquid injection display interface shown in some embodiments of the present application;

[0030] Figure 7 A schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application Figure 1 ;

[0031] Figure 8 A schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application Figure 2 ;

[0032] Fig. 9 A schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application Figure 3 ;

[0033] Fig.10 A schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application Figure 4 ;

[0034] Fig.11 A schematic diagram of the composition structure of a liquid injection system for a battery cell provided in some embodiments of the present application;

[0035] Fig.12 A schematic diagram of an interaction of a liquid injection system for a battery cell provided in some embodiments of the present application to implement liquid injection and code scanning;

[0036] Fig.13 An interactive schematic diagram of implementing liquid preparation in a liquid injection system of a battery cell provided in some embodiments of the present application;

[0037] Fig.14 An interactive schematic diagram of a liquid injection system for a battery cell provided in some embodiments of the present application to implement liquid injection and read liquid injection volume data;

[0038] Fig.15 An interactive schematic diagram of a battery cell injection system provided in some embodiments of the present application for reading data of a battery cell transported to a static chamber. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the specific technical solution of the present application will be further described in detail below in conjunction with the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in this application are only for the purpose of describing this embodiment and are not intended to limit this application.

[0041] In the following description, references to “some embodiments,” “this embodiment,” “this embodiment,” and examples, etc., describe a subset of all possible embodiments, but it can be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict.

[0042] If similar descriptions of "first / second" appear in the application documents, the following instructions are added. In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the present embodiment described here can be implemented in an order other than that illustrated or described here.

[0043] In the embodiments of the present application, the term "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, object A and / or object B may represent three situations: object A exists alone, object A and object B exist at the same time, and object B exists alone.

[0044] At present, new energy batteries are more and more widely used in life and industry. New energy batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, and aerospace and other fields. With the continuous expansion of the application field of power batteries, the market demand is also constantly expanding. In the embodiment of the present application, the battery involved may be a battery cell. A battery cell refers to a basic unit that can realize the mutual conversion of chemical energy and electrical energy, which can be used to make a battery module or a battery pack, so as to supply power to an electrical device. A battery cell may be a secondary battery, which refers to a battery cell that can be used to activate the active material by charging after the battery cell is discharged. The battery cell may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., and the embodiment of the present application is not limited to this.

[0045] In the embodiment of the present application, the battery may also be a single physical module including one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel or in hybrid connection through a busbar component.

[0046] In the related art, liquid injection is a key process in the production process of lithium-ion batteries. The quality of the liquid injection results not only affects the battery performance, but also restricts the battery production efficiency. In the battery cell liquid injection process, the set liquid reserve volume provided to the liquid injection pump deviates from the actual liquid reserve volume parameter of the liquid injection pump. The size of the deviation value will directly affect the liquid injection data of the battery cell. For example: if the deviation between the set liquid reserve volume and the actual liquid reserve volume is too large, it is usually the upper computer of the liquid injection process that feeds back the information of the excessive deviation to the central control system corresponding to the battery cell liquid injection link for a corresponding alarm, so that the corresponding operator can check the cause, etc. In this way, the upper computer is relatively passive when the liquid injection is abnormal, that is, it cannot automatically execute the corresponding liquid injection or liquid injection alarm, etc., thereby affecting the stability of the battery cell liquid injection.

[0047] Based on the above problems, an embodiment of the present application provides a method and system for filling a battery cell, which ensures the stability and efficiency of the filling by performing filling when the deviation between the actual reserve liquid volume and the set reserve liquid volume of the filling mechanism meets a certain value; and in the filling process, the filling is performed based on the position memory information of the battery cell on the tray carrying it, that is, the battery cell position is more specifically remembered, which can further improve the filling efficiency and accuracy of the battery cell.

[0048] For the convenience of explanation, the following embodiments are described by taking a method for injecting liquid into a battery cell provided in some embodiments of the present application as an example. The method for injecting liquid is applied to a host computer, see Figure 1 FIG. 1 is a schematic diagram of a flow chart of a method for injecting liquid into a battery cell according to some embodiments of the present application. Figure 1 , the following combination Figure 1 The following instructions are given:

[0049] Step S101 : in response to a battery cell to be injected arriving at a injection station, obtaining position memory information corresponding to the battery cell in a tray.

[0050] In the embodiment of the present application, the injection station may be a station for injecting electrolyte into the battery cell; wherein the injection station may be equipped with an injection mechanism (injection pump) for injecting electrolyte into the battery cell. Here, the injection mechanism is usually a quantitative injection pump, which is equipped with a quantitative container for containing electrolyte.

[0051] In the embodiment of the present application, the tray is used to carry the battery cells to be injected, that is, the battery cells entering the injection process; wherein, the tray may be provided with multiple slots, which are used to hold several battery cells (batteries), and the battery cells held in the slots may perform related operations, such as injection, welding or welding detection, etc. At the same time, the corresponding shapes and sizes of the multiple slots deployed on the tray are matched with the battery cells or batteries.

[0052] In the embodiment of the present application, the number of the card slots on the tray can be 8, 10, 32, etc. Here, the number of the card slots can be determined according to the actual battery cell filling requirements; there is no limitation on this in the embodiment of the present application.

[0053] In the embodiments of the present application, the battery cell to be injected may refer to a battery cell that needs to be injected once or a battery cell that needs to be injected twice, and the embodiments of the present application do not impose any limitation on this. It should be noted that the primary injection of the battery cell is carried out during the manufacturing process of the battery cell, and its purpose is to ensure the stability of the battery cell capacity and provide protection for the life of the battery cell; while the secondary injection is carried out during the use of the battery cell, and its purpose is to maintain the consistency of the battery cell capacity and extend the service life of the battery cell.

[0054] In the embodiments of the present application, the battery cell may refer to a battery cell of any shape, such as a square battery cell, a round battery cell, etc. And the battery cell usually refers to a battery cell (Battery Cell), which is one of the basic units that constitute the battery. The battery cell is the core component of the battery, responsible for storing and releasing electrical energy. Here, the battery cell can be: a lithium-ion battery cell (Li-ion Cell), a lithium polymer battery cell (Li-polymer Cell), a nickel-metal hydride battery cell (NiMH Cell), etc. The embodiments of the present application do not impose any restrictions on the type of battery cell, and the specific selection can be made according to the actual application scenario.

[0055] In the embodiments of the present application, the battery cell is the core component of the battery pack. A battery pack usually contains multiple battery cells, which are combined together to provide the required power capacity and voltage. Among them, the battery pack refers to a device composed of multiple battery cells, which is designed to store electrical energy and provide power supply. The components of the battery pack include at least: battery cells, battery management system (Battery Management System, BMS), housing, connecting harness, connector and interface, etc. These components work together to combine the battery cells into a fully functional battery pack for various application scenarios. For example, the battery pack can be applied to electric vehicles, energy storage systems, portable electronic devices, solar energy systems, wind energy systems, emergency backup power supplies, power tools or electric bicycles, etc. The embodiments of the present application do not make any restrictions on this, and can be selected according to the actual application scenario.

[0056] In the embodiment of the present application, when the battery cell to be injected arrives at the injection station, the relevant battery cell transportation mechanism may transport the tray carrying the battery cell to the injection station. Here, the control system (controller) corresponding to the battery cell in the injection process may control the transportation of the tray so that the battery cell to be injected arrives at the injection station; or the controller may control the relevant grabbing mechanism to grab the battery cell to be injected from the previous station to the injection station.

[0057] In the embodiment of the present application, the number of battery cells to be injected with liquid may be one or more, and the embodiment of the present application does not impose any limitation on this.

[0058] In the embodiment of the present application, the host computer may be an industrial computer (industrial control equipment); wherein the host computer may include a processor and a memory. Here, the memory may be used to store relevant programs running on the processor, and at the same time, the processor may execute the liquid injection method of the battery cell when running the program.

[0059] In the embodiment of the present application, the host computer can exchange data with the controller; wherein the controller can be: a programmable logic controller (PLC) and the like.

[0060] In the embodiment of the present application, the host computer can first read the barcode of the tray under the action of the read signal sent by the controller, and then obtain the corresponding position memory information from the previously known tray data table based on the barcode; wherein, the position memory information can be generated when the battery cell is placed on the tray, and the battery cell has been placed on the tray before reaching the injection station, so that the host computer can obtain the position memory information from the previously generated related data. In the embodiment of the present application, the position memory information corresponding to the battery cell in the tray can be represented by the corresponding card slot number of the battery cell in the tray, etc.

[0061] It can be understood that, through the above steps, the position memory information of the battery cell in the tray can be obtained, so as to provide a parameter basis for subsequent liquid injection based on the position memory information, thereby improving the stability and efficiency of the battery cell in the liquid injection process.

[0062] Step S102, determining the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism deployed on the injection station.

[0063] In the embodiment of the present application, the injection mechanism deployed on the injection station can be arranged corresponding to the battery cell on the injection station, and the embodiment of the present application does not impose any limitation on this. For example, the injection mechanism can be deployed directly above the injection station, or can be deployed on the side of the injection station and can be rotated at a preset angle to achieve injection of the battery cell on the injection station.

[0064] In the embodiment of the present application, if the injection mechanism deployed at the injection station is 8 parallel quantitative injection pumps, that is, at the injection station, the electrolyte can be injected into 8 battery cells to be injected at the injection station at the same time. Here, the arrangement layout of the 8 battery cells to be injected corresponds to the positions of the 8 quantitative injection pumps one by one.

[0065] In the embodiment of the present application, the amount of reserve liquid is set, and the corresponding set reserve liquid amount may vary according to different battery cell requirements; for example, for a 100Ah square aluminum shell battery, the injection amount corresponding to one injection is usually around 300g to 350g.

[0066] In the embodiment of the present application, the liquid injection mechanism is controlled to prepare liquid based on the set liquid preparation amount, and after the liquid injection mechanism prepares liquid based on the set liquid preparation amount, the actual liquid preparation amount of the liquid injection mechanism is read. Here, in the actual liquid injection process of the battery cell, there is usually a difference between the set liquid preparation amount corresponding to the liquid injection mechanism and the actual liquid preparation amount.

[0067] It should be noted that the target injection mechanism corresponding to the position memory information of the battery cell in the tray can be selected from multiple injection mechanisms to be selected deployed on the injection station, and then the actual reserve liquid volume and the set reserve liquid volume of the target injection machine can be determined.

[0068] It can be understood that through the above steps, the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism are obtained, thereby providing a basis for subsequent identification based on the difference between the two whether to directly inject liquid or to perform alarm suspension and other processing.

[0069] Step S103: when the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value, obtaining the injection data of the battery cell.

[0070] The injection data is obtained by the injection mechanism injecting liquid into the battery cell based on the actual reserve liquid volume and the position memory information.

[0071] In the embodiment of the present application, after obtaining the actual reserve liquid volume and the set reserve liquid volume, the host computer can compare the two to determine the deviation between the two. Here, if the deviation is less than or equal to the preset deviation value, the injection data of the battery cell can be directly obtained; if the deviation is greater than the preset deviation value, an alarm signal can be issued accordingly.

[0072] In the embodiment of the present application, the preset deviation value may be a pre-set value, such as 10g, etc. Its specific value may be determined according to the actual production requirements of the battery cell in the liquid injection process, and the embodiment of the present application does not impose any limitation on this.

[0073] It should be noted that too much liquid injection in the battery cell during the injection process can easily cause the battery to bulge, resulting in uneven battery thickness; while too little liquid injection in the battery cell during the injection process will lead to a reduction in battery capacity and cycle times, and uneven liquid injection in the battery cell will lead to consistency differences in battery capacity and cycle performance, so it is very necessary to control the liquid injection amount of the battery cell to meet the preset requirements.

[0074] In an embodiment of the present application, it may be the injection port of the injection mechanism. Based on the position memory information, when the injection hole of the battery cell is aligned, the battery cell is injected according to a preset injection rate based on the actual reserve liquid volume to obtain injection data; wherein the injection hole of the battery cell may be located on the battery top cover.

[0075] In the embodiment of the present application, the injection data includes but is not limited to: the injection time corresponding to the battery cell, the actual reserve amount, the injection rate (here, the injection rate is not limited to: the average injection rate of the entire injection process, the maximum injection rate, the minimum injection rate), etc.

[0076] It can be understood that through the above scheme, on the one hand, when the deviation between the actual reserve liquid volume and the set reserve liquid volume of the injection mechanism meets a certain value, injection is carried out to ensure the stability and efficiency of the injection; on the other hand, a more specific battery cell position can be obtained through position memory information, further improving the injection efficiency and accuracy of the battery cell.

[0077] In some embodiments of the present application, the acquisition of the location memory information in the above step S101 can be implemented by the following steps S201 and S202. Figure 2 FIG. 1 is a schematic diagram of a flow chart of a method for injecting liquid into a battery cell according to some embodiments of the present application. Figure 2 , the following combination Figure 2 The following instructions are given:

[0078] Step S201: in response to the battery cell arriving at the liquid injection station, obtaining a tray code of the tray.

[0079] In an embodiment of the present application, when the battery cells to be injected arrive at the injection station, an image of the tray can be captured, and the tray code of the tray carrying the battery cells can be obtained by identifying the image obtained from the image capture.

[0080] In the embodiment of the present application, the pallet code may be in the form of a barcode, a QR code, etc., and the present application does not impose any limitation on this.

[0081] It should be noted that pallet codes are usually used in logistics, such as battery cell transportation management, to identify and track the battery cells it carries.

[0082] In the embodiment of the present application, the pallet code may be a mark marked on the pallet, or may be a pallet code associated with the pallet and stored inside the host computer.

[0083] In the embodiment of the present application, the step of obtaining the pallet code in the above step S201 may include the following steps S2011 and S2012:

[0084] Step S2011, in response to the battery cell arriving at the liquid filling station, obtaining a liquid preparation code scanning signal sent by a controller.

[0085] In the embodiment of the present application, the controller in the injection system where the host computer is located sends a liquid preparation code scanning signal to the host computer when it detects that the battery cell has arrived at the injection station. Here, there may be a detector on the injection station, which sends an arrival signal to the controller when it detects that the battery cell has arrived, so that the controller sends the liquid preparation code scanning signal to the host computer.

[0086] Step S2012: Based on the liquid preparation scanning signal, control the scanning mechanism to scan the tray to obtain the tray code.

[0087] In the embodiment of the present application, after receiving the liquid preparation code scanning signal, the host computer can correspondingly control the code scanning mechanism to scan the pallet to obtain the pallet code. Here, the code scanning mechanism can be deployed on the host computer, and the code scanning mechanism can be a code scanning gun.

[0088] It can be understood that, through the above steps, based on the interaction between multiple devices, the pallet code of the pallet can be intelligently acquired to improve the efficiency of acquiring the pallet code.

[0089] In the embodiment of the present application, obtaining the pallet code in the above step S2012 may include the following steps A1 and A2:

[0090] Step A1: Based on the liquid preparation scanning signal, control the scanning mechanism to scan the tray to obtain an initial code of the tray.

[0091] Step A2: when the verification result corresponding to the initial code is successful, the initial code is determined as the pallet code.

[0092] In the embodiment of the present application, the scanning mechanism can be further controlled to scan the pallet based on the obtained liquid preparation scanning signal, and the initial code obtained by scanning can be verified, including but not limited to: verifying the format of the initial code and verifying the length of the initial code to obtain the corresponding verification result. Here, if the verification result is successful, the initial code can be determined as the pallet code.

[0093] Continuing from the above description, determining that the verification result corresponding to the initial code of the pallet is successful may mean that the format of the initial code is consistent with the format of the preset pallet code, and the length of the initial code is the same as the length of the preset pallet code. Here, the preset pallet code may be data pre-stored in the host computer.

[0094] It should be noted that, when the verification result corresponding to the initial code is a verification failure, the verification can be performed again accordingly, or a new initial code can be identified again and verified again accordingly to avoid the probability of verification errors or errors in the link of obtaining the initial code; or, when the verification result corresponding to the initial code is a verification failure, a verification failure signal or an alarm signal can be issued accordingly. Here, the verification failure signal can also be sent to the controller so that the controller can perform relevant operations accordingly, such as: shutting down (stopping the work of the host computer, and / or stopping the work of itself, and / or stopping the work of the code scanning mechanism), so that relevant staff can check the cause of the abnormality, etc.

[0095] It can be understood that, through the above steps, when the initial code of the pallet code is read, it is correspondingly verified to improve the accuracy of the pallet code obtained subsequently.

[0096] Step S202: In the pallet data table, determine the location memory information associated with the pallet code.

[0097] The tray data table is data acquired when the battery cell is in a code scanning station, and the code scanning station is a station before the liquid injection station.

[0098] In the embodiment of the present application, the position memory information can be determined from a previously stored or acquired pallet data table based on the pallet code. Here, the pallet data table can be acquired by the host computer performing corresponding data reading at the code scanning station, and the battery cell is transported to the code scanning station and the liquid injection station in sequence during the liquid injection process.

[0099] In the embodiment of the present application, the liquid filling station and the code reading station can be adjacent or far away. For example, there are other stations between the code scanning station and the liquid filling station, such as a detection station, a weighing station, etc. Here, the code scanning station can be the first station of the battery cell entering the liquid filling process.

[0100] It should be noted that the pallet data table may include relevant information of multiple pallets, wherein the relevant information of each pallet may include at least: the pallet code, the position memory information of the battery cells in the pallet, the position mark of the pallet on the work station, etc.; wherein the pallet code, position memory information and position mark of each pallet correspond one to one.

[0101] It can be understood that, through the above steps, based on the obtained pallet code, the associated position memory information is obtained from the pallet data table. In this way, on the basis of being able to improve the efficiency of obtaining the position memory information, it is helpful to accurately locate the battery cell to be injected, and provide parameter support for the subsequent battery cell injection.

[0102] In some embodiments of the present application, determining the actual reserve liquid volume and setting the reserve liquid volume of the injection mechanism in the above step S102 can be achieved by following the steps S301 and S302. Figure 3 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 3 , the following combination Figure 3 The following instructions are given:

[0103] Step S301: receiving a liquid reserve signal carrying the set liquid reserve amount sent by a controller.

[0104] In the embodiment of the present application, when the battery cell is detected to have arrived at the injection station, a liquid preparation signal sent by the controller for controlling the injection mechanism to prepare the liquid may be received accordingly. Here, the controller may exchange information with the host computer, and the injection system for injecting liquid into the battery cell may include at least: a controller and a host computer, etc., and may also include: a code scanning mechanism, an injection mechanism, etc.

[0105] In the embodiment of the present application, the set amount of reserve liquid can be determined according to the property parameters of the battery cell, such as the size of the battery cell, the shape of the battery cell, etc. Here, the controller can determine the set amount of reserve liquid based on the property parameters of the battery cell to be injected that are collected in advance.

[0106] Step S302: Based on the liquid preparation signal, control the liquid injection mechanism to prepare liquid, and after the liquid injection mechanism completes the liquid injection, determine the current liquid injection volume of the liquid injection mechanism as the actual liquid preparation volume.

[0107] In an embodiment of the present application, the host computer controls the injection mechanism to prepare liquid based on the set liquid preparation volume carried internally based on the received liquid preparation signal, and after the injection mechanism finishes preparing liquid, reads the current liquid preparation volume of the injection mechanism and determines it as the actual liquid preparation volume.

[0108] It should be noted that there is usually a deviation between the actual reserve liquid volume and the set reserve liquid volume. Here, the number of injection mechanisms can match the number of battery cells to be injected, so that the actual injection volume of each injection mechanism can be the same or different.

[0109] In the embodiment of the present application, it can be assumed that the liquid injection volume inside the liquid injection mechanism is empty before the liquid is prepared.

[0110] It can be understood that through the above steps, based on the corresponding reserve liquid signal, the set reserve liquid volume and the actual injection volume are obtained in sequence, which not only can improve the efficiency and accuracy of the obtained set reserve liquid volume and actual injection volume, but also can provide a parameter basis for subsequent battery cell injection.

[0111] In some embodiments of the present application, after the battery cell is injected, it is necessary to place the injected battery cell in a static mechanism for static placement so that the battery cell is fully infiltrated by the injected electrolyte, that is, the injection method provided in the above embodiment can also perform the following steps S401 and S402. Figure 4 FIG. 1 is a schematic diagram of a flow chart of a method for injecting liquid into a battery cell according to some embodiments of the present application. Figure 4 , the following combination Figure 4 The following instructions are given:

[0112] Step S401: In response to the battery cell being in a stationary position in a stationary mechanism, reading stationary data of the battery cell.

[0113] Wherein, the static station is a station located after the liquid injection station.

[0114] In the embodiment of the present application, the static station can be adjacent to the injection station or far away. Here, it can be a battery cell transport mechanism that transports the battery cell from the injection station to the static station; or it can be a controller corresponding to the battery cell in the injection process that controls the tray transportation so that the battery cell after injection is transferred from the injection station to the static station.

[0115] In the embodiment of the present application, the static mechanism may be a vacuum box mechanism.

[0116] It should be noted that the role of lithium battery electrolyte is to conduct ions between the positive and negative electrodes of the battery, and it serves as a medium for charging and discharging, so that the electrolyte can fully and evenly penetrate into the interior of the lithium battery. Therefore, standing is an important step in the injection process; here, the battery cell (the battery cell after injection) is transported to the standing station in the standing mechanism for standing, so that the battery cell is fully infiltrated by the injected electrolyte. It should be noted that the longer the standing time, the more fully the electrolyte is infiltrated, and thus the better the battery performance and life.

[0117] In an embodiment of the present application, after the battery cell has been in a static station for a preset period of time, the static time and voltage parameters corresponding to the battery cell are read (here the voltage parameters of the battery cell can be used to represent the wetting effect), and determined as the static data of the battery cell.

[0118] In the embodiment of the present application, the number and layout of the static stations deployed in the static mechanism may be determined according to the actual production requirements of the battery cells.

[0119] In the embodiment of the present application, the acquisition of the static data of the battery cell in the above step S401 may include the following steps S4011 and S4012:

[0120] Step S4011: In response to the time that the battery cell has been in the static position reaching a preset time, receiving a read signal sent by a controller.

[0121] In the embodiment of the present application, the preset duration depends on the actual production requirements of the battery cell, which is associated with the property parameters of the battery cell (such as the size of the battery cell, the shape of the battery cell, etc.). Exemplarily, the preset duration is: 24h, 20h, etc.

[0122] Step S4012: Based on the read signal, read the cell parameters corresponding to the cell after being left at rest to obtain the rest data.

[0123] In the embodiment of the present application, based on the acquired read signal, the cell parameters corresponding to the cell after the cell is left at rest for a preset time, that is, the rest data, are read.

[0124] Here, the static data includes but is not limited to: static time, voltage parameters. Here, the voltage parameters may be: the voltage value and internal resistance value corresponding to the battery cell are measured at regular intervals during the static time when the battery cell is in the static mechanism.

[0125] It can be understood that, through the above steps, the static data of the battery cells being transported to the static station can be obtained, thereby providing parameter support for the subsequent acquisition of more comprehensive process data of the battery cells in the liquid injection process.

[0126] Step S402: Determine process data of the battery cell in the liquid injection process based on the liquid injection data of the battery cell and the static data of the battery cell.

[0127] In the embodiment of the present application, the injection data and the static data can be used together as the process data of the battery cell in the injection process. Here, the process data of the battery cell in the injection process can be obtained based on the difference between some data with the same attributes in the injection data and the static data, and the injection data and the static data.

[0128] It can be understood that, through the above steps, the static data corresponding to the battery cell is obtained, and the static data and the aforementioned liquid injection data are used as the process data of the battery cell in the liquid injection process. In this way, on the one hand, the battery cell is sequentially transferred to multiple stations in the liquid injection process, making the transportation of the battery cell intelligent; on the other hand, the parameters of the battery cell at different stations in the liquid injection process can be obtained in real time, so as to provide more comprehensive battery cell liquid injection data.

[0129] Continuing from the above description, the above-mentioned injection data at least includes: injection rate, injection time and vacuuming time, and the static data at least includes: static time and voltage parameters; correspondingly, after obtaining the above-mentioned injection data and static data of the battery cell, they can be correspondingly stored in the battery cell data table corresponding to the production link (injection link), that is, the injection method provided in the embodiment of the present application can also perform the following steps B:

[0130] Step B: based on the cell code of the cell, write the injection rate, the injection time, the vacuuming time, the standing time and the voltage parameter into a cell data table to update the cell data table.

[0131] Wherein, the battery cell code is obtained when the battery cell is in a code reading station; the code reading station is a station before the liquid injection station.

[0132] In the embodiment of the present application, the cell code of the battery cell may be information obtained by reading the battery cell by a code reading mechanism when the battery cell is transported to the code reading station; here, the code reading station and the liquid filling station may be adjacent or far apart.

[0133] It should be noted that the number of cells included in the cell data table may depend on actual production. Here, the cell data table may include the cell data acquired by the host computer within a preset time; wherein the preset time may be one month, three months, etc., and the present application embodiment does not impose any limitation on this.

[0134] In the embodiment of the present application, each cell in the cell data table corresponds to each process data of the injection process. Here, each cell in the cell data table corresponds to a cell code (read and stored at the code reading station), a tray code of the tray where the cell is located (read and stored at the code scanning station), the process data of the cell (obtained at the injection station and the static station), and weighing data (the weight data corresponding to the first and last stations of the cell to be injected into the injection process).

[0135] In an embodiment of the present application, based on the battery cell code of the battery cell, the acquired filling rate, filling time, vacuuming time, standing time and voltage parameters are correspondingly written into the area associated with the battery cell code in the battery cell data table to update the battery cell data table.

[0136] It can be understood that through the above steps, the relevant data in the battery cell data table is updated in real time based on the battery cell code to realize the storage of process data of the battery cell in the liquid injection process, thereby providing parameter support for subsequent viewing or related operations on the battery cell.

[0137] In some embodiments of the present application, before the battery cell reaches the injection station, a corresponding capping operation needs to be performed to cover part of the battery cell and leave only the injection hole of the battery cell. That is, the injection method provided in the above embodiment may also include the following steps C1 and C2:

[0138] Step C1, in response to the battery cell arriving at the capping station, receiving a capping signal sent by a controller.

[0139] Wherein, the capping station is a station located before the liquid injection station.

[0140] In the embodiment of the present application, when the battery cell arrives at the capping station, the detector deployed at the capping station sends an arrival signal to the controller, so that the host computer receives the capping signal sent by the controller.

[0141] It should be noted that a tray carrying a plurality of battery cells may be transported to a capping station to trigger the controller to send a capping signal, and the capping signal is used to perform a capping operation on the plurality of battery cells in the tray.

[0142] Step C2: Based on the capping signal, control the mechanical gripper to grab the sleeve cup to perform a capping operation on the battery cell in the tray, so as to obtain the battery cell with a liquid injection hole, so as to inject liquid into the battery cell.

[0143] In the embodiment of the present application, the sleeve cup is a tool that is set corresponding to the tray that carries the battery cells. Here, by setting a preset position relationship, the sleeve cup is placed above the battery cells in the tray, so that the battery cells placed in the tray can be shielded, leaving only the injection holes of the battery cells, which facilitates the subsequent injection of the battery cells. Among them, the preset position relationship can refer to the correspondence between the multiple card slots deployed on the tray and the multiple card slots deployed on the sleeve cup; illustratively, the tray is deployed with multiple card slots according to the preset layout rules, and correspondingly, the sleeve cup is also deployed with multiple card slots according to the preset layout rules.

[0144] In the embodiment of the present application, based on the capping signal, the mechanical gripper can be controlled to grab a set of cups to cap the battery cells in the tray, so that only the injection holes are left when the battery cells are transported to the subsequent injection station. Here, the capping operation plays a role in protecting the internal structure of the battery cell, preventing the corrosion and damage of the battery cell by foreign substances (such as the electrolyte in the subsequent injection link), and improving the safety and stability of the battery cell in the injection process, that is, the subsequent injection process.

[0145] It can be understood that through the above steps, based on the capping operation at the capping station, the battery cell is transported to the subsequent liquid injection station to display the corresponding injection hole so that the injection mechanism can inject liquid into it. In this way, the erosion and damage of the electrolyte to the battery cell during the injection link can be reduced, and the safety and stability of the battery cell in the subsequent injection process can be improved.

[0146] Here, in the method for injecting liquid into the battery cell provided in the embodiment of the present application, when the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to the preset deviation value, the injection mechanism will inject liquid into the battery cell based on the actual reserve liquid volume and the position memory information; correspondingly, if the difference between the actual reserve liquid volume and the set reserve liquid volume is greater than the preset deviation value, an alarm signal can be correspondingly issued or the abnormal signal can be displayed, or an abnormal signal can be triggered to the controller in the injection system where the host computer is located, so that the controller performs a corresponding shutdown operation, etc. The embodiment of the present application does not impose any limitation on this.

[0147] Correspondingly, the host computer can present a liquid injection display interface, which can be used to display multiple information involved in the above embodiment, such as: the position memory information corresponding to the battery cell in the tray, the actual reserve liquid volume and the set reserve liquid volume corresponding to the liquid injection mechanism, etc. Correspondingly, steps S101 to S104 provided in the above embodiment can be implemented by following steps S501 to S504. Please refer to Figure 5 As shown, Figure 5 Schematic diagram of the process of injecting liquid into a battery cell provided in some embodiments of the present application Figure 5 The following combination Figure 5 The following instructions are given:

[0148] Step S501, presenting a liquid injection display interface.

[0149] Wherein, the injection display interface includes an injection data frame and a liquid preparation control.

[0150] Step S502 : in response to the battery cell arriving at the injection station, displaying the corresponding position memory information of the battery cell in the tray in the injection data frame.

[0151] Step S503: In response to triggering the liquid reserve control, the actual liquid reserve volume and the set liquid reserve volume corresponding to the injection mechanism are displayed in the injection data frame.

[0152] Step S504 , in response to the difference between the actual reserve liquid volume and the set reserve liquid volume being less than or equal to a preset deviation value, displaying the injection data of the battery cell in the injection data frame.

[0153] In the embodiment of the present application, the presentation form of the injection data box and the reserve liquid control included in the injection display interface can be determined according to actual needs; illustratively, the injection data box is displayed in a table form or a curve form, and the reserve liquid control is displayed as a preset icon.

[0154] In an embodiment of the present application, the injection data box and the reserve liquid control can be displayed synchronously on the injection display interface, and can be displayed in different areas or pages. They can be switched accordingly through manual click operations or trigger operations to display the injection data box or the reserve liquid control.

[0155] It should be noted that the injection display interface includes but is not limited to the above-mentioned injection data box and liquid preparation control, and can also display a schematic architecture diagram of the host computer in different dimensions (three dimensions and / or two dimensions).

[0156] In the embodiment of the present application, for the specific implementation description of the above steps S501 to S504, reference may be made to the detailed description of the above-mentioned method for injecting liquid into the battery cell.

[0157] Here, see Figure 6 , which is a schematic diagram of a liquid injection display interface shown in some embodiments of the present application, wherein the liquid injection display interface 601 includes: a liquid injection data box 6011 and a liquid preparation control 6012; here, Figure 6 This is just an example, and the liquid filling display interface in the actual production process of the battery cell can be determined according to actual needs.

[0158] It can be understood that through the above steps, on the one hand, when the deviation between the actual reserve liquid volume and the set reserve liquid volume of the liquid injection mechanism meets a certain value, the liquid injection mechanism will display the injection data of the relevant battery cell accordingly while injecting liquid into the battery cell, thereby ensuring the stability and efficiency of the liquid injection; on the other hand, a more specific battery cell position can be obtained through the position memory information, thereby further improving the injection efficiency and accuracy of the battery cell.

[0159] Continuing from the above description, the liquid injection method further comprises:

[0160] Step D1: In response to the battery cell being in a stationary position in a stationary mechanism, displaying stationary data of the battery cell in the injection data frame.

[0161] Step D2: displaying process data in the injection data frame.

[0162] The process data includes injection data of the battery cell and static data of the battery cell.

[0163] In the embodiment of the present application, the above-mentioned injection data at least include: injection rate, injection time and vacuum extraction time, and the static data at least include: static time and voltage parameters.

[0164] Here, the cell data table can also be presented on the liquid filling display interface. Correspondingly, the liquid filling rate, liquid filling time, vacuuming time, static time and voltage parameters can be written into the cell data table based on the cell code of the cell to update the presented cell data table. The cell code is obtained when the cell is in the code reading station; the code reading station is the station before the liquid filling station.

[0165] In the embodiment of the present application, the cell data table may be presented in another data frame in the liquid filling display interface, or may be presented in the liquid filling data frame, and the embodiment of the present application does not impose any limitation on this.

[0166] It can be understood that through the above steps, the injection data and static data of the battery cell are correspondingly displayed in the injection data frame, so that the operator of the host computer can promptly know the process data of the battery cell in the injection process, and can promptly perform relevant analysis and operations based on the displayed data.

[0167] Here, see Figure 7 FIG. 1 is a schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application. Figure 1; Wherein, the injection display interface 700 may include: a function interface selection area 701; wherein, in the function interface selection area 701, when the control corresponding to the main interface is triggered, the following may be displayed on the injection display interface 700: a three-dimensional schematic architecture display area 702 of the host computer, a log menu bar display area 703 corresponding to the host computer, and a status display area 704. Here, the status display area may display, for example: the connection status between the PLC communicating with the host computer, the scanning status of the battery cell to be injected at the front end of the injection process, the Hipot test status, etc. In addition, the user login area for operating the host computer, i.e., 705, may also be presented on the injection display interface 700.

[0168] Continuing from the above description, see Figure 8 FIG. 1 is a schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application. Figure 2 Among them, in the function interface selection area 701 included in the injection display interface 700, when the control corresponding to the injection interface is triggered, the injection display interface 700 can display: the function selection display area 801 of the injection mechanism and the injection volume curve display area 802, etc., so that the real-time injection data of the injection link can be displayed in the form of a curve on the injection display interface.

[0169] Also, see Fig. 9 FIG. 1 is a schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application. Figure 3 , wherein, in the function interface selection area 701 included in the injection display interface 700, when a control corresponding to the injection pump is triggered, the injection display interface 700 can display: the injection pump injection parameter display control and the function menu display area 901, and the debugging log information display area 902. In this way, the relevant operator of the relevant host computer can manually select the injection-related display, and view the injection log for saving, etc.

[0170] In addition, see Fig.10 FIG. 1 is a schematic diagram of a liquid injection display interface corresponding to a host computer provided in an embodiment of the present application. Figure 4 Among them, in the function interface selection area 701 included in the injection display interface 700, when the control for the relevant equipment parameters is triggered, the injection display interface 700 can display: the equipment parameter setting display area 1001, the injection link parameter setting display area 1002 and the upper computer task management touch area 1003, so that the operator can set the parameters of the injection link, etc.

[0171] Correspondingly, some embodiments of the present application also provide a battery cell injection system, please refer to Fig.11 As shown, Fig.11 This is a schematic diagram of the composition structure of the liquid injection system of the battery cell provided in some embodiments of the present application. The liquid injection system 1100 includes: a host computer 1101, a controller 1102, and a liquid injection mechanism 1103, wherein:

[0172] In response to the battery cell to be injected arriving at the injection station, the host computer 1101 acquires the corresponding position memory information of the battery cell in the tray under the action of the controller 1102;

[0173] The host computer 1101 determines the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism 1103;

[0174] When the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to the preset deviation value, the host computer 1101 obtains the injection data of the battery cell;

[0175] The injection data is obtained by the injection mechanism 1103 injecting liquid into the battery cell under the action of the controller 1102 based on the actual reserve liquid volume and the position memory information.

[0176] In some embodiments of the present application, the injection system 1100 can be applied to the injection method of the battery cell provided in any of the above embodiments. For detailed descriptions of the host computer 1101, the controller 1102, and the injection mechanism 1103, etc., refer to the detailed descriptions of the above-mentioned battery cell injection method.

[0177] The following is an explanation of the battery cell injection system provided by the present application with a specific embodiment. Here, the battery cell injection system includes: a controller, a host computer, a barcode scanning gun, an injection mechanism, etc.

[0178] Among them, when the battery cell is transported to the injection station in the injection process, the injection system of the battery cell will correspondingly execute the following four processes: 1. Scan the injection code; 2. Prepare the liquid; 3. Inject the liquid and read the injection volume data; 4. Read the data of the battery cell transported to the static chamber.

[0179] Among them, see Fig.12 As shown in the figure, in the liquid injection system of the battery cell, liquid injection and code scanning are realized based on the controller 121, the host computer 122 and the code scanning gun 123, which specifically includes:

[0180] 1201, start;

[0181] 1202. The controller 121 sends a liquid injection code scanning trigger to the host computer 122. Here, the controller 121 may detect that the battery cell to be injected has arrived at the injection station, and then send a liquid injection code scanning signal to the host computer 122;

[0182] 1203, host computer 122 reads the code scan trigger;

[0183] 1204. The host computer 122 sends a code scanning instruction to the code scanning gun 123. Here, the host computer 122 may send a code scanning trigger signal to the code scanning gun 123 based on the received injection code scanning trigger signal;

[0184] 1205. The barcode scanner 123 scans the barcode. Here, the barcode scanner 123 scans the tray carrying the battery cells based on the received barcode scanning instruction to obtain the tray code (which may be a barcode) of the tray;

[0185] 1206. The host computer 122 verifies the pallet code scanned by the barcode scanner 123, that is, verifies whether the pallet code is qualified;

[0186] 1207. When the pallet code is qualified, the upper computer 122 searches for the location memory information matching the pallet code from the previously obtained pallet data table;

[0187] 1208. After querying the position memory information, the host computer 122 ends the liquid injection scanning process.

[0188] It should be noted that during the liquid injection and code scanning process, each process executed by the host computer 122 will send a signal to the controller 121 accordingly, so that the controller 121 can obtain the real-time workflow of the host computer 122 in real time. Here, if the host computer 122 fails to verify the pallet code, that is, if the pallet code verification fails, and if the location memory information is not found, the corresponding verification failure and the signal that no relevant information is found will be sent to the controller 121.

[0189] Correspondingly, see Fig.13 As shown, the liquid preparation is realized based on the controller 121, the host computer 122 and the liquid injection pump 124 (i.e., the liquid injection mechanism mentioned above) in the liquid injection system of the battery cell, which specifically includes:

[0190] 1301, start;

[0191] 1302. The controller 121 sends a liquid preparation trigger to the host computer 122. Here, the controller 121 may detect that the battery cell to be filled with liquid arrives at the filling station, and then send a liquid preparation signal to the host computer 122;

[0192] 1303, the host computer 122 reads the liquid preparation trigger;

[0193] 1304. The host computer 122 carries a set amount of the prepared liquid based on the prepared liquid trigger, and sends the set amount of the prepared liquid to the injection pump 124 corresponding to the injection station;

[0194] 1305, liquid injection, after receiving the set liquid preparation volume, 124 performs liquid preparation;

[0195] 1306. The host computer 122 may send a signal for reading the actual amount of the reserve liquid to the injection pump 124, so as to read the current injection amount of the injection pump 124. Here, the host computer 122 may send the signal for reading the actual amount of the reserve liquid correspondingly after sending the set amount of the reserve liquid to the injection pump for a period of time;

[0196] 1307, the injection pump 124 sends the actual amount of reserve liquid to the host computer 122;

[0197] 1308. The host computer 122 compares the difference between the set reserve liquid volume and the actual reserve liquid volume to see if it is less than or equal to the preset deviation. If the difference is less than or equal to the preset deviation, the controller 121 can subsequently control the injection pump 124 to inject liquid into the battery cell; if the difference is greater than the preset deviation, a corresponding alarm signal is issued;

[0198] 1309. When the deviation is less than or equal to the preset deviation, the liquid preparation link can be ended accordingly, so that the host computer 122 can enter the next link.

[0199] It should be noted that, during the liquid preparation process, each process executed by the host computer 122 will send a signal to the controller 121 accordingly, so that the controller 121 can obtain the real-time working data of the host computer 122 in real time. Here, if the host computer 122 compares the deviation between the set liquid preparation amount and the actual liquid preparation amount and it is greater than the preset deviation, the corresponding liquid preparation failure signal can also be sent to the controller 121.

[0200] Correspondingly, see Fig.14 As shown in the figure, the liquid injection system of the battery cell is based on the controller 121 and the host computer 122 to realize liquid injection and read the liquid injection amount data, which specifically includes:

[0201] 1401, start;

[0202] 1402, the controller 121 sends a liquid injection amount data trigger to the host computer 122;

[0203] 1403, the host computer 122 reads the injection volume data trigger signal sent by the controller 121;

[0204] 1404. The host computer 122 acquires data of the battery cell during the liquid injection process based on the battery cell code and the pallet barcode known in advance, that is, reads the liquid injection volume data;

[0205] 1405. The host computer 122 stores the read liquid filling amount data, that is, stores the liquid filling amount data of all the cells in the tray in a database;

[0206] 1406. End.

[0207] Here, when reading the injection volume data during the injection process, each process executed by the host computer 122 will correspondingly send a signal to the controller 121, so that the controller 121 can obtain the real-time working data of the host computer 122 in real time.

[0208] Correspondingly, see Fig.15 As shown in the figure, in the liquid injection system of the battery cell, the data of the battery cell transported to the static chamber is read based on the controller 121 and the host computer 122, which specifically includes:

[0209] 1501, start;

[0210] 1502, the controller 121 sends a static cavity data trigger to the host computer 122;

[0211] 1503, the host computer 122 reads the static cavity data trigger sent by the controller 121;

[0212] 1504. The host computer 122 is triggered based on the received static cavity data to read the data of the battery cells in the static cavity;

[0213] 1505. The host computer 122 stores the read data of the battery cells in the static cavity, that is, stores the static cavity data of all the battery cells in the tray in a database;

[0214] 1506. End.

[0215] Here, in the data flow of reading the battery cells transported to the static chamber, each process executed by the host computer 122 will correspondingly send a signal to the controller 121 so that the controller 121 can obtain the real-time working data of the host computer 122 in real time.

[0216] Here, for further detailed implementation process, reference may be made to the detailed description of the liquid injection method of the battery cell in the above embodiment, which will not be repeated here.

[0217] Some embodiments of the present application further provide a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by at least one processor, the battery cell injection method as described in any one of the above embodiments is implemented.

[0218] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the serial number of each step / process mentioned above does not mean the order of execution, and the execution order of each step / process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The serial numbers of the embodiments of the present application mentioned above are for description only and do not represent the advantages and disadvantages of the embodiments.

[0219] The present application uses descriptions such as "upper", "lower", "top", "bottom", "front", "back", "inside" and "outside" to indicate directions or positional relationships. This is only for the convenience of describing the present application, and does not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as limiting the scope of protection of the present application.

[0220] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0221] It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0222] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0223] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, the functional units in the embodiments of the present application may be all integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0224] The above are only implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed in the present application should be covered within the protection scope of the present application.

Claims

1. A method for injecting liquid into a battery cell, characterized in that: Applied to the host computer, the injection method includes: In response to the battery cell to be injected arriving at the injection station, obtaining the corresponding position memory information of the battery cell in the tray; Determine the actual liquid reserve volume and the set liquid reserve volume corresponding to the liquid injection mechanism deployed at the liquid injection station; When the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value, acquiring the injection data of the battery cell; The injection data is obtained by the injection mechanism injecting liquid into the battery cell based on the actual reserve liquid volume and the position memory information.

2. The liquid injection method according to claim 1, characterized in that: In response to the battery cell to be injected arriving at the injection station, obtaining the corresponding position memory information of the battery cell in the tray includes: In response to the battery cell arriving at the injection station, acquiring a tray code of the tray; In the pallet data table, determining the location memory information associated with the pallet code; The tray data table is obtained when the battery cell is in a code scanning station, and the code scanning station is a station before the liquid injection station.

3. The liquid injection method according to claim 2, characterized in that: In response to the battery cell arriving at the injection station, obtaining the tray code of the tray includes: In response to the battery cell arriving at the liquid injection station, obtaining a liquid preparation code scanning signal sent by a controller; Based on the liquid preparation scanning signal, the scanning mechanism is controlled to scan the tray to obtain the tray code.

4. The liquid injection method according to any one of claims 1 to 3, characterized in that: The determining of the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism deployed at the injection station includes: receiving a liquid reserve signal sent by a controller and carrying the set liquid reserve amount; Based on the liquid preparation signal, the liquid injection mechanism is controlled to prepare liquid, and after the liquid injection mechanism completes the liquid preparation, the current liquid preparation volume of the liquid injection mechanism is read and determined as the actual liquid preparation volume.

5. The liquid injection method according to any one of claims 1 to 3, characterized in that: The liquid injection method also includes: In response to the battery cell being in a stationary position in a stationary mechanism, reading stationary data of the battery cell; Determine the injection data of the battery cell and the static data of the battery cell as process data of the battery cell in the injection procedure; Wherein, the static station is a station located after the liquid injection station.

6. The liquid injection method according to claim 5, characterized in that: In response to the battery cell being in a stationary position in a stationary mechanism, reading the stationary data of the battery cell comprises: In response to the battery cell being in the static position for a predetermined period of time, receiving a read signal sent by a controller; Based on the read signal, the cell parameters corresponding to the cell after being left at rest are read to obtain the rest data.

7. The liquid injection method according to claim 6, characterized in that: The injection data at least includes: injection rate, injection time and vacuum time, the static data at least includes: static time and voltage parameters, and the injection method further includes: Based on the cell code of the cell, the injection rate, the injection time, the vacuuming time, the standing time and the voltage parameter are written into a cell data table to update the cell data table; Wherein, the battery cell code is obtained when the battery cell is in a code reading station; the code reading station is a station before the liquid injection station.

8. The liquid injection method according to any one of claims 1 to 3, characterized in that: In response to the battery cell to be injected arriving at the injection station, obtaining the corresponding position memory information of the battery cell in the tray includes: Presenting a liquid injection display interface; wherein the liquid injection display interface includes a liquid injection data box and a liquid preparation control; In response to the battery cell arriving at the injection station, displaying the corresponding position memory information of the battery cell in the tray in the injection data frame; The determining of the actual liquid reserve amount and the set liquid reserve amount corresponding to the liquid injection mechanism deployed at the liquid injection station includes: In response to the triggering of the liquid reserve control, in the liquid injection data frame, the actual liquid reserve volume and the set liquid reserve volume corresponding to the liquid injection mechanism are displayed; When the difference between the actual reserve liquid amount and the set reserve liquid amount is less than or equal to a preset deviation value, acquiring the injection data of the battery cell includes: In response to the difference between the actual reserve liquid volume and the set reserve liquid volume being less than or equal to a preset deviation value, the injection data of the battery cell is displayed in the injection data frame.

9. The liquid injection method according to claim 8, characterized in that: The liquid injection method also includes: In response to the battery cell being in a stationary position in the stationary mechanism, displaying the stationary data of the battery cell in the injection data frame; displaying process data in the injection data frame; The process data includes injection data of the battery cell and static data of the battery cell.

10. A liquid injection system for a battery cell, characterized in that: The injection system comprises: a host computer, a controller, and an injection mechanism, wherein: In response to the battery cell to be injected arriving at the injection station, the host computer acquires the corresponding position memory information of the battery cell in the tray under the action of the controller; The host computer determines the actual reserve liquid volume and the set reserve liquid volume corresponding to the injection mechanism; When the difference between the actual reserve liquid volume and the set reserve liquid volume is less than or equal to a preset deviation value, the host computer acquires the injection data of the battery cell; The injection data is obtained by the injection mechanism, under the action of the controller, injecting liquid into the battery cell based on the actual reserve liquid volume and the position memory information.

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