Electrolyte injection system and electrolyte injection method

Abstract

An electrolyte injection system (100) and an electrolyte injection method. The electrolyte injection system (100) comprises an electrolyte injection device (110), an upper computer (120) and a control device (130), wherein the electrolyte injection device (110) comprises at least one electrolyte injection pump (111); the control device (130) is configured to send to the upper computer (120) pump information of a target electrolyte injection pump (111a) currently to be subjected to electrolyte preparation in the electrolyte injection device (110); the upper computer (120) is configured to: acquire pump information from the control device (130), determine, on the basis of the pump information and from among bearing positions of a battery cell tray currently entering the electrolyte injection device (110), a target bearing position currently corresponding to the target electrolyte injection pump (111a), determine, on the basis of a first correlation, a target electrolyte injection parameter corresponding to the target bearing position, with the first correlation comprising electrolyte injection parameters respectively corresponding to at least one bearing position, and issue the target electrolyte injection parameter to the target electrolyte injection pump (111a); and the target electrolyte injection pump (111a) is configured to perform electrolyte preparation according to the target electrolyte injection parameter, and after electrolyte preparation, perform electrolyte injection on a battery cell located at the target bearing position.

Description

Liquid injection system and liquid injection method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202410199852.1, application date February 22, 2024, and invention name “Injection system and injection method”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to, but is not limited to, the field of battery production technology, and in particular to a liquid injection system and a liquid injection method. Background Art

[0004] During the production process of battery products, an injection system can be used to inject liquid into the battery cells. In the injection system of the related art, a cell code will be set for each battery cell entering the injection equipment, and the cell code of each battery cell will be written into the control device of the injection station through the host computer, and in the liquid preparation process, the host computer will obtain the cell code of the battery cell to be injected corresponding to the injection pump from the control device, and send the injection parameters corresponding to the cell code to the injection pump. However, in the solution of this injection system, the number of point interactions between the host computer and the control device is relatively large, resulting in a slow speed for the battery cell to enter the station and the host computer to send the injection parameters to the injection pump, thereby increasing the overall duration of the injection process and affecting production efficiency.

[0005] Summary of the Invention

[0006] In view of this, the embodiments of the present disclosure provide at least a liquid injection system and a liquid injection method, which can simplify the interaction process between the host computer and the control device in the liquid injection process, reduce the number of point interactions between the host computer and the control device, speed up the liquid injection of battery cells into the station and the speed at which the host computer sends liquid injection parameters to the liquid injection pump, thereby reducing the overall duration of the liquid injection process and improving production efficiency.

[0007] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0008] The present disclosure provides a liquid injection system, comprising:

[0009] Liquid injection equipment, a host computer and a control device; wherein the liquid injection equipment includes at least one liquid injection pump;

[0010] The control device is used to send pump information of the target injection pump of the current liquid to be prepared in the injection device to the host computer;

[0011] The host computer is configured to: obtain the pump information from the control device; determine, based on the pump information, a target carrying position currently corresponding to the target injection pump from each carrying position of the battery cell tray currently entering the injection device; determine, based on a first correspondence, a target injection parameter corresponding to the target carrying position, wherein the first correspondence includes an injection parameter corresponding to at least one of the carrying positions; and send the target injection parameter to the target injection pump;

[0012] The target injection pump is used to prepare liquid according to the target injection parameters, and to inject liquid into the battery cell located in the target carrying position after preparing the liquid.

[0013] In the injection system of the embodiment of the present disclosure, the host computer first obtains the pump information of the target injection pump currently waiting for liquid in the injection equipment from the control device; then, based on the pump information, determines the target carrying position corresponding to the target injection pump from the various carrying positions of the battery tray currently entering the injection equipment; finally, based on the first corresponding relationship, determines the target injection parameters corresponding to the target carrying position, and sends the target injection parameters to the target injection pump, wherein the first corresponding relationship includes the injection parameters corresponding to at least one carrying position of the battery tray. In this way, on the one hand, there is no need to set a cell code for each battery cell in the tray, so that the host computer does not need to write the cell code into the control device during the battery cell injection station process, and the control device does not need to record the cell code of each battery cell in the battery tray during the injection process; on the other hand, in the liquid preparation process, the control device does not need to provide the cell code of the battery cell currently waiting for injection to the host computer. In this way, the interaction process between the host computer and the control device in the injection process can be simplified, the number of point interactions between the host computer and the control device can be reduced, the speed of battery cell injection into the station and the speed of the host computer sending injection parameters to the injection pump can be accelerated, thereby reducing the overall duration of the injection process and improving production efficiency.

[0014] In some embodiments, each of the injection pumps corresponds to N carrying positions in the battery cell tray, and the injection pump is used to inject the battery cells in the corresponding N carrying positions in N batches, where N is a positive integer and does not exceed the total number of carrying positions in the battery cell tray; the pump information includes the pump number and / or the current injection batch; the host computer is used to determine the target carrying position currently corresponding to the target injection pump in each carrying position of the battery cell tray based on the pump number and / or the current injection batch.

[0015] In this way, the host computer can simply and quickly determine the current target carrying position corresponding to the target injection pump through the pump number and / or current injection batch of the target injection pump provided by the control device, thereby further reducing the number of point interactions between the host computer and the control device.

[0016] In some embodiments, N is greater than 1; the host computer is used to: determine N carrying positions corresponding to the target injection pump among each carrying position of the battery cell tray based on the pump number; and determine the target carrying position currently corresponding to the target injection pump from the N carrying positions based on the current injection batch.

[0017] In this way, the host computer can quickly and accurately determine the current target load position corresponding to the target injection pump.

[0018] In some embodiments, the injection device is provided with multiple injection pumps, and the multiple injection pumps correspond one-to-one to each of the carrying positions, and the pump information includes a pump number; the host computer is used to determine the target carrying position currently corresponding to the target injection pump based on the pump number and / or the second corresponding relationship; the second corresponding relationship represents a one-to-one correspondence between at least one pump number and each of the carrying positions.

[0019] In this way, the target carrying position currently corresponding to the target injection pump can be determined quickly and accurately based on the pump number of the target injection pump and the one-to-one correspondence between at least one pump number and each carrying position in the battery cell tray.

[0020] In some embodiments, the host computer is configured to obtain the first correspondence from a production execution system during the entry process of the battery cell tray into the liquid injection equipment, and record the first correspondence locally on the host computer.

[0021] In this way, in the process of the battery cell tray entering the station, the host computer can obtain the first corresponding relationship from the production execution system, so as to determine the target liquid injection parameters corresponding to the target carrying position based on the first corresponding relationship in the liquid preparation process, without the need for the host computer to send the cell code of each battery cell in the battery cell tray to the control device, thereby reducing the interaction between the host computer and the control device in the process of entering the station and speeding up the entry of the battery cell tray.

[0022] In some embodiments, the injection parameters include the injection volume; the host computer is used to: obtain the switch state of the quantitative injection mode; when the switch state is the first state, based on the first corresponding relationship, determine the target injection volume corresponding to the target bearing position; the first state indicates that the quantitative injection mode is turned off.

[0023] In this way, when the quantitative injection mode is turned off, the target injection amount corresponding to the target carrying position can be determined according to the first corresponding relationship, thereby better meeting the injection requirements of the battery cells to be injected in each carrying position of the battery tray in the non-quantitative injection scenario.

[0024] In some embodiments, the host computer is used to obtain a preset injection volume when the switch state is in the second state, and determine the preset injection volume as a target injection volume corresponding to the target bearing position; the second state indicates that the quantitative injection mode is turned on.

[0025] In this way, when the quantitative injection mode is turned on, the preset injection volume can be determined as the target injection volume corresponding to the target carrying position, thereby supporting the issuance of the injection volume for the quantitative injection scenario to meet the quantitative injection requirements of the battery cells to be injected in each carrying position of the battery cell tray.

[0026] In some embodiments, the host computer has a first display interface, which includes a mode configuration area; the host computer is used to set the switch state to the first state in response to receiving a closing operation of the quantitative injection mode performed in the mode configuration area; or, the host computer is used to set the switch state to the second state in response to receiving a turning on operation of the quantitative injection mode performed in the mode configuration area.

[0027] In this way, the quantitative injection mode can be flexibly turned on or off in the mode configuration area of ​​the first display interface of the host computer, so as to adapt to different injection scenarios to better meet actual production needs.

[0028] In some embodiments, the first display interface further includes an injection volume configuration area; the host computer is configured to obtain the preset injection volume in response to receiving an injection volume setting operation performed in the injection volume configuration area.

[0029] In this way, the appropriate preset injection volume can be set in the injection volume configuration area of ​​the first display interface of the host computer according to actual needs, so as to better meet the quantitative injection needs in the actual production process.

[0030] In some embodiments, the control device is used to: obtain the injection data of the battery cell during the battery cell injection process, and in response to determining that the injection of at least one battery cell carried in the battery cell tray is completed, send a data acquisition signal to the host computer; the host computer is used to obtain the injection data of the at least one battery cell from the control device in response to receiving the data acquisition signal, and for each battery cell, bind the injection data of the battery cell and the carrying position of the battery cell in the battery cell tray and store them locally on the host computer.

[0031] In this way, the host computer can collect and record the cell injection data locally after the cell injection is completed. Moreover, by binding and storing the cell injection data and the cell's carrying position in the cell tray, it is convenient to obtain the corresponding cell injection data based on the carrying position in the cell tray in the subsequent process. In addition, after determining that the cell injection is completed, the control device can control the host computer to collect and record the cell injection data in a timely manner by sending a data acquisition signal to the host computer, reducing the probability of injection data loss due to abnormal conditions such as power failure of the control device, and improving the reliability of injection data collection and the stability of the injection system operation.

[0032] In some embodiments, the host computer is used to determine the injection completion status of the battery cell based on the injection data of the battery cell, and bind and store the injection data of the battery cell, the carrying position of the battery cell in the battery cell tray and the injection completion status locally on the host computer.

[0033] In this way, by binding and storing the battery cell's injection data, the battery cell's carrying position in the battery cell tray, and the injection completion status locally on the host computer, it is convenient to quickly and accurately obtain the battery cell's injection data and / or determine whether the battery cell is injected according to the battery cell's carrying position in the battery cell tray in the subsequent process.

[0034] The present disclosure provides a liquid injection method, which is applied to a host computer and includes:

[0035] Obtaining pump information of a target injection pump of a liquid currently to be prepared in the injection device from the control device;

[0036] Based on the pump information, determining a target carrying position currently corresponding to the target injection pump from various carrying positions of the battery cell tray currently entering the injection device;

[0037] Determining target injection parameters corresponding to the target bearing positions based on a first corresponding relationship, wherein the first corresponding relationship includes at least one injection parameter corresponding to each of the bearing positions;

[0038] The target injection parameters are sent to the target injection pump, so that the target injection pump prepares the liquid according to the target injection parameters and injects the liquid into the battery cell located in the target carrying position after the liquid is prepared.

[0039] In the injection method of the embodiment of the present disclosure, the host computer first obtains the pump information of the target injection pump currently waiting for liquid in the injection equipment from the control device; then, based on the pump information, determines the target carrying position corresponding to the target injection pump from each carrying position of the battery tray currently entering the injection equipment; finally, based on the first corresponding relationship, determines the target injection parameters corresponding to the target carrying position, and sends the target injection parameters to the target injection pump, wherein the first corresponding relationship includes the injection parameters corresponding to at least one carrying position of the battery tray. In this way, on the one hand, there is no need to set a cell code for each battery cell in the tray, so that the host computer does not need to write the cell code into the control device during the battery cell injection station process, and the control device does not need to record the cell code of each battery cell in the battery tray during the injection process; on the other hand, in the liquid preparation process, the control device does not need to provide the cell code of the battery cell currently waiting for injection to the host computer. In this way, the interaction process between the host computer and the control device in the injection process can be simplified, the number of point interactions between the host computer and the control device can be reduced, the speed of battery cell injection into the station and the speed of the host computer sending injection parameters to the injection pump can be accelerated, thereby reducing the overall duration of the injection process and improving production efficiency.

[0040] In some embodiments, the injection device includes at least one injection pump, each of the injection pumps corresponds to N carrying positions in the battery cell tray, and the injection pump is used to inject the battery cells in the corresponding N carrying positions in N batches, N is a positive integer, and N does not exceed the total number of carrying positions in the battery cell tray; the pump information includes the pump number and / or the current injection batch; based on the pump information, determining the target carrying position currently corresponding to the target injection pump from each carrying position of the battery cell tray currently entering the injection device includes: determining the target carrying position currently corresponding to the target injection pump in each carrying position of the battery cell tray based on the pump number and / or the current injection batch.

[0041] In this way, the host computer can simply and quickly determine the current target carrying position corresponding to the target injection pump through the pump number and / or current injection batch of the target injection pump provided by the control device, thereby further reducing the number of point interactions between the host computer and the control device.

[0042] In some embodiments, N is greater than 1; determining the target carrying position currently corresponding to the target injection pump among each carrying position of the battery cell tray based on the pump number and / or the current injection batch includes: determining N carrying positions corresponding to the target injection pump among each carrying position of the battery cell tray based on the pump number; and determining the target carrying position currently corresponding to the target injection pump from the N carrying positions based on the current injection batch.

[0043] In this way, the host computer can quickly and accurately determine the current target load position corresponding to the target injection pump.

[0044] In some embodiments, the injection device is provided with a plurality of injection pumps, and the plurality of injection pumps correspond one-to-one to each of the carrying positions, and the pump information includes a pump number; based on the pump information, the target carrying position currently corresponding to the target injection pump is determined from the various carrying positions of the battery cell tray currently entering the injection device, including: based on the pump number and a second corresponding relationship, determining the target carrying position currently corresponding to the target injection pump; the second corresponding relationship represents a one-to-one correspondence between at least one pump number and each of the carrying positions.

[0045] In this way, the target carrying position currently corresponding to the target injection pump can be determined quickly and accurately based on the pump number of the target injection pump and the one-to-one correspondence between at least one pump number and each carrying position in the battery cell tray.

[0046] In some embodiments, the injection parameters include injection volume; determining the target injection parameters corresponding to the target bearing position based on the first corresponding relationship includes: obtaining the switch state of the quantitative injection mode; when the switch state is the first state, determining the target injection volume corresponding to the target bearing position based on the first corresponding relationship; the first state indicates that the quantitative injection mode is turned off.

[0047] In this way, when the quantitative injection mode is turned off, the target injection amount corresponding to the target carrying position can be determined according to the first corresponding relationship, thereby better meeting the injection requirements of the battery cells to be injected in each carrying position of the battery tray in the non-quantitative injection scenario.

[0048] In some embodiments, the injection method further includes: when the switch state is in the second state, obtaining a preset injection volume; the second state indicates that the quantitative injection mode is turned on; and determining the preset injection volume as the target injection volume corresponding to the target bearing position.

[0049] In this way, when the quantitative injection mode is turned on, the preset injection volume can be determined as the target injection volume corresponding to the target carrying position, thereby supporting the issuance of the injection volume for the quantitative injection scenario to meet the quantitative injection requirements of the battery cells to be injected in each carrying position of the battery cell tray.

[0050] In some embodiments, the injection method further includes: in response to receiving a data acquisition signal sent by the control device, obtaining injection data of at least one battery cell carried in the battery cell tray from the control device; wherein, the data acquisition signal is sent by the control device after determining that the injection of at least one battery cell is completed, and the injection data of the battery cell is obtained by the control device during the battery cell injection process; for each of the battery cells, the injection data of the battery cell and the carrying position of the battery cell in the battery cell tray are bound and stored locally on the host computer.

[0051] In this way, the host computer can collect and record the cell injection data locally after the cell injection is completed. Moreover, by binding and storing the cell injection data and the cell's carrying position in the cell tray, it is convenient to obtain the corresponding cell injection data based on the carrying position in the cell tray in the subsequent process. In addition, after determining that the cell injection is completed, the control device can control the host computer to collect and record the cell injection data in a timely manner by sending a data acquisition signal to the host computer, reducing the probability of injection data loss due to abnormal conditions such as power failure of the control device, and improving the reliability of injection data collection and the stability of the injection system operation.

[0052] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and are not intended to limit the technical solutions of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solutions of the present disclosure.

[0054] FIG1 is a schematic diagram of the structure of a liquid injection system provided by an embodiment of the present disclosure;

[0055] FIG2 is a schematic diagram of a first display interface provided by an embodiment of the present disclosure;

[0056] FIG3 is a schematic diagram of a second display interface provided by an embodiment of the present disclosure;

[0057] FIG4 is a schematic diagram of a flow chart of a liquid injection method according to an embodiment of the present disclosure;

[0058] FIG5 is a schematic diagram of a process for sending a cell liquid injection amount according to an embodiment of the present disclosure;

[0059] FIG6 is a schematic diagram of an implementation process of collecting cell injection data provided by an embodiment of the present disclosure;

[0060] FIG7 is a schematic diagram of an implementation process of marking the completion status of a battery cell liquid injection provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the technical solutions of the present disclosure are further elaborated in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0062] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will 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.

[0063] The terms "first / second / third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first / second / third" can be interchanged with a specific order or sequence where permitted so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0064] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present disclosure pertains. The terms used herein are for the purpose of describing the present disclosure only and are not intended to limit the present disclosure.

[0065] The following describes the embodiments of the present disclosure in detail.

[0066] Currently, new energy batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.

[0067] In the embodiment of the present disclosure, the battery cell may be a battery cell. A battery cell refers to a basic unit that can realize the mutual conversion between chemical energy and electrical energy, and can be used to make a battery module or battery pack, thereby being used to supply power to an electrical device. The battery cell may be a secondary battery, which refers to a battery cell that can continue to be used by activating 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 disclosure is not limited to this. In the embodiment of the present disclosure, 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 mixed connection through a busbar component.

[0068] The present disclosure provides a liquid injection system, as shown in FIG1 , wherein the liquid injection system 100 includes:

[0069] Liquid injection equipment 110, host computer 120 and control device 130; wherein the liquid injection equipment 110 includes at least one liquid injection pump 111;

[0070] The control device 130 is used to send the pump information of the target injection pump 111a of the current liquid to be prepared in the injection device to the host computer 120;

[0071] The host computer 120 is configured to: obtain pump information from the control device 130; determine, based on the pump information, a target carrying position corresponding to the target injection pump 111a from each carrying position of the battery cell tray currently entering the injection device 110; determine, based on a first correspondence, a target injection parameter corresponding to the target carrying position, the first correspondence including an injection parameter corresponding to at least one carrying position; and send the target injection parameter to the target injection pump 111a;

[0072] The target injection pump 111a is used to prepare liquid according to the target injection parameters, and inject liquid into the battery cell located in the target carrying position after preparing the liquid.

[0073] It is understandable that the liquid injection system 100 can be applied to, but is not limited to, the first liquid injection process, the second liquid injection process and / or the liquid replenishment process of the battery cell.

[0074] In some embodiments, the liquid injection device 110 can use a tray-type liquid injection method to inject liquid into the battery cells. During implementation, the battery cells to be injected can be loaded onto a battery tray and brought into the liquid injection device 110. The at least one liquid injection pump 111 in the liquid injection device 110 then injects liquid into the battery cells placed at at least one position in the battery tray. During implementation, the liquid injection device 110 can be located at a liquid injection station in a liquid injection station.

[0075] The host computer 120 can be used to control the flow of the liquid injection process. During implementation, the host computer 120 can be at least one of a server, a laptop computer, a tablet computer, a desktop computer, a smart phone, etc.

[0076] The control device 130 can be used to control the operation of various mechanisms in the liquid injection station. In practice, the control device 130 can be, for example, an industrial computer, a programmable logic controller (PLC), etc. For example, the control device 130 can be a PLC used to control the operation of the liquid injection device 110.

[0077] Before injecting liquid into the battery cells carried in the cell tray, at least one injection pump 111 in the injection device 110 may be pre-filled with liquid. The control device 130 may transmit pump information of the target injection pump 111a currently preparing liquid to the host computer 120. The number of target injection pumps 111a may be one or more. The pump information of the target injection pump 111a may include, but is not limited to, the pump number of the target injection pump 111a and / or the current injection batch of the target injection pump 111a.

[0078] In some embodiments, a pump information location can be pre-set in the control device 130. When the target infusion pump 111a is currently preparing for liquid preparation, the control device 130 can write the pump information of the target infusion pump 111a into the pump information location, and the host computer 120 can read the pump information of the target infusion pump 111a from the pump information location. It is understood that depending on the amount of information contained in the pump information in the actual application scenario, one or more pump information locations can be set in the control device 130.

[0079] After obtaining the pump information of the target injection pump 111a from the control device 130, the host computer 120 can determine the target carrying position currently corresponding to the target injection pump 111a based on the pump information in any preset appropriate manner. It can be understood that the target carrying position currently corresponding to the target injection pump 111a refers to the carrying position of the battery cell currently to be injected by the target injection pump 111a in each carrying position of the battery cell tray. In some embodiments, a mapping relationship between at least one pump information and at least one carrying position in the battery cell tray can be pre-established, and based on the mapping relationship, the target carrying position currently corresponding to the target injection pump 111a can be determined. During implementation, the mapping relationship can be pre-set by those skilled in the art according to actual conditions, such as at least one of a preset mapping relationship table, a preset mapping formula, etc., and the embodiments of the present disclosure are not limited to this.

[0080] The first correspondence may represent the association between the loading positions in the battery tray and the injection parameters. This first correspondence includes the injection parameters corresponding to at least one loading position in the battery tray. The host computer 120 may determine the target injection parameters corresponding to the target loading position by querying this first correspondence. In some embodiments, the first correspondence may be pre-stored locally on the host computer 120. For example, the first correspondence may be pre-stored in a cache or database on the host computer 120.

[0081] The injection parameters may include, but are not limited to, whether to perform injection, the injection amount, and / or the type of electrolyte. For example, if the target injection parameter includes the injection amount, the target injection pump 111a may prepare the electrolyte according to the injection amount. For another example, if the target injection parameter includes first information indicating that injection is not to be performed, the target injection pump 111a may not prepare the electrolyte. For another example, if the target injection parameter includes second information indicating that injection is to be performed, the target injection pump 111a may prepare the electrolyte according to a preset injection amount or the injection amount included in the target injection parameter.

[0082] In the injection system of the embodiment of the present disclosure, the host computer first obtains the pump information of the target injection pump currently waiting for liquid in the injection equipment from the control device; then, based on the pump information, determines the target carrying position corresponding to the target injection pump from the various carrying positions of the battery tray currently entering the injection equipment; finally, based on the first corresponding relationship, determines the target injection parameters corresponding to the target carrying position, and sends the target injection parameters to the target injection pump, wherein the first corresponding relationship includes the injection parameters corresponding to at least one carrying position of the battery tray. In this way, on the one hand, there is no need to set a cell code for each battery cell in the tray, so that the host computer does not need to write the cell code into the control device during the battery cell injection station process, and the control device does not need to record the cell code of each battery cell in the battery tray during the injection process; on the other hand, in the liquid preparation process, the control device does not need to provide the cell code of the battery cell currently waiting for injection to the host computer. In this way, the interaction process between the host computer and the control device in the injection process can be simplified, the number of point interactions between the host computer and the control device can be reduced, the speed of battery cell injection into the station and the speed of the host computer sending injection parameters to the injection pump can be accelerated, thereby reducing the overall duration of the injection process and improving production efficiency.

[0083] In some embodiments, each injection pump 111 corresponds to N loading positions in the battery cell tray, and the injection pump 111 is used to inject the battery cells in the corresponding N loading positions in N batches, where N is a positive integer and does not exceed the total number of loading positions in the battery cell tray; the pump information includes the pump number and / or the current injection batch;

[0084] The host computer 120 is configured to determine a target carrying position corresponding to a target injection pump among the various carrying positions of the battery cell tray based on the pump number and / or the current injection batch.

[0085] Here, those skilled in the art can pre-set the correspondence between each injection pump 111 in the injection equipment 110 and each carrying position in the battery cell tray in any appropriate manner according to actual conditions, so that each injection pump 111 corresponds to N carrying positions in the battery cell tray. The embodiments of the present disclosure are not limited to this.

[0086] In some embodiments, the carrying positions in the cell tray can be divided into multiple groups, each group of carrying positions includes N carrying positions, and the same group of carrying positions is mapped to the same injection pump 111. In this way, each injection pump 111 can be mapped to the N carrying positions in the cell tray.

[0087] The injection pump 111 can be used to inject the battery cells in the corresponding N carrying positions in N batches, and the injection pump 111 can inject one battery cell in each batch. Among them, N can be any suitable positive integer that does not exceed the total number of carrying positions in the battery cell tray. During implementation, the number of N can be determined according to actual conditions, and the embodiments of the present disclosure are not limited. For example, N can be the ratio between the total number of carrying positions in the battery cell tray and the number of injection pumps 111 in the injection device 110. For example, if the total number of carrying positions in the battery cell tray is 24, and the number of injection pumps 111 in the injection device 110 is 6, then N can be 4, that is, each injection pump 111 can correspond to 4 injection pumps 111 in the battery cell tray.

[0088] In some embodiments, N can be 1, meaning that each injection pump 111 in the injection device 110 corresponds to a loading position on the cell tray, injecting the cell in that loading position. In this way, the host computer 120 can determine the target loading position currently corresponding to the target injection pump 111a among the various loading positions on the cell tray based on the pump number of the target injection pump 111a. For example, the pump number of the target injection pump 111a can be used to query the correspondence between each injection pump 111 and each weighing position on the cell tray to obtain the target loading position currently corresponding to the target injection pump 111a.

[0089] In some embodiments, the injection device 110 includes multiple injection pumps 111, where N can be greater than 1 and does not exceed the total number of loading positions in the battery cell tray. That is, each injection pump 111 in the injection device 110 corresponds to multiple loading positions in the battery cell tray to inject battery cells in these multiple loading positions. In this way, the host computer 120 can determine the target loading position currently corresponding to the target injection pump 111a among the various loading positions in the battery cell tray based on the pump number of the target injection pump 111a and the current injection batch.

[0090] In some embodiments, the injection device 110 includes an injection pump 111, and N can be the total number of carrying positions in the battery cell tray, that is, one injection pump 111 in the injection device 110 corresponds to all carrying positions in the battery cell tray to inject battery cells in all carrying positions. In this way, the host computer 120 can determine the target carrying position corresponding to the target injection pump 111a among the various carrying positions of the battery cell tray based on the current injection batch of the target injection pump 111a. For example, the target injection pump 111a can inject liquid into each carrying position in the battery cell tray in sequence. When the current injection batch is 1, the target carrying position corresponding to the target injection pump 111a can be determined to be position 1; when the current injection batch is 2, the target carrying position corresponding to the target injection pump 111a can be determined to be position 2; and so on.

[0091] In the above embodiment, the host computer can simply and quickly determine the current target carrying position corresponding to the target injection pump through the pump number and / or current injection batch of the target injection pump provided by the control device, thereby further reducing the number of point interactions between the host computer and the control device.

[0092] In some embodiments, N is greater than 1; the host computer 120 is used to: determine N carrying positions corresponding to the target injection pump 111a in each carrying position of the battery cell tray based on the pump number; and determine the current target carrying position corresponding to the target injection pump 111a from the N carrying positions based on the current injection batch.

[0093] Here, a mapping relationship between the pump number, the injection batch, and the carrying position in the battery cell tray can be pre-set. Based on this mapping relationship, the N carrying positions corresponding to the target injection pump 111a can be determined based on the pump number of the target injection pump 111a. Then, based on the current injection batch, the current target carrying position corresponding to the target injection pump 111a can be determined. During implementation, the mapping relationship between the pump number, the injection batch, and the carrying position in the battery cell tray can be set by those skilled in the art based on actual circumstances, and the embodiments of the present disclosure are not limited to this.

[0094] In some embodiments, the position numbers of the N carrying positions corresponding to the same injection pump 111 are continuous. The position number of the first carrying position among the N continuous carrying positions corresponding to the target injection pump 111 can be used as the starting position number, and the starting position number and the sum of the current injection batch minus 1 are used as the position number of the target carrying position. For example, when there are 6 injection pumps 111 and the number of carrying positions in the battery cell tray is 24, the first injection pump can correspond to positions 1 to 4, the second injection pump can correspond to positions 5 to 8, the third injection pump can correspond to positions 9 to 12, and so on. The sixth injection pump can correspond to positions 21 to 24. If the target injection pump 111a is the i-th injection pump, the position number of the first carrying position among the N carrying positions corresponding to the target injection pump 111 is (i-1 )*4+1, when the current injection batch is the jth batch, the current target carrying position corresponding to the target injection pump 111a is the (i-1)*4+jth position. For example, if the target injection pump 111a is the second injection pump, when the current injection batch is the first batch, the current target carrying position corresponding to the target injection pump 111a is the fifth position. When the current injection batch is the second batch, the current target carrying position corresponding to the target injection pump 111a is the sixth position.

[0095] In the above embodiment, the host computer determines N loading positions corresponding to the target injection pump among the various loading positions of the battery cell tray based on the pump number. Based on the current injection batch, the host computer determines the target loading position corresponding to the target injection pump from these N loading positions. In this way, the host computer can quickly and accurately determine the target loading position corresponding to the target injection pump.

[0096] In some embodiments, the injection device 110 is provided with a plurality of injection pumps 111 , and the plurality of injection pumps 111 correspond one-to-one to each carrying position, and the pump information includes a pump number;

[0097] The host computer 120 is used to determine the target carrying position currently corresponding to the target injection pump 111a based on the pump number and the second corresponding relationship; the second corresponding relationship represents a one-to-one correspondence between at least one pump number and each carrying position.

[0098] Here, the second corresponding relationship may be pre-set by those skilled in the art according to actual application scenarios, and the embodiments of the present disclosure are not limited thereto.

[0099] In this way, the target carrying position currently corresponding to the target injection pump can be determined quickly and accurately based on the pump number of the target injection pump and the one-to-one correspondence between at least one pump number and each carrying position in the battery cell tray.

[0100] In some embodiments, the host computer 120 is configured to obtain the first corresponding relationship from the production execution system during the entry process of the battery cell tray into the liquid injection equipment 110 , and record the first corresponding relationship locally on the host computer.

[0101] Here, the manufacturing execution system (MES) can determine in advance the injection parameters of the battery cells to be injected placed at each carrying position in the battery tray on the logistics line, and determine and record the first corresponding relationship corresponding to each battery tray based on the injection parameters corresponding to each carrying position in each battery tray.

[0102] In some embodiments, the host computer 120 can scan the code to obtain the pallet identification of the battery cell pallet currently entering the injection equipment 110 during the process of the battery cell pallet scanning the code to enter the station, and obtain the first corresponding relationship corresponding to the battery cell pallet from the production execution system based on the pallet identification, and record the first corresponding relationship locally on the host computer 120.

[0103] In the above embodiment, in the process of the battery cell tray entering the station, the host computer can obtain the first corresponding relationship from the production execution system, so as to determine the target liquid injection parameters corresponding to the target carrying position based on the first corresponding relationship in the liquid preparation process, without the need for the host computer to send the cell code of each battery cell in the battery cell tray to the control device, thereby reducing the interaction between the host computer and the control device in the process of entering the station and speeding up the entry of the battery cell tray.

[0104] In some embodiments, the infusion parameters include an infusion volume;

[0105] The host computer 120 is used to: obtain the switch state of the quantitative injection mode; when the switch state is the first state, determine the target injection volume corresponding to the target bearing position based on the first corresponding relationship; the first state indicates that the quantitative injection mode is turned off.

[0106] Here, the quantitative injection mode refers to a mode in which a fixed injection volume is used to inject liquid into the battery cell. When the quantitative injection mode is turned on, the host computer 120 can send a fixed injection volume to the injection pump, so that the injection pump can inject liquid into the battery cell according to the fixed injection volume. When the quantitative injection mode is turned off, the host computer 120 can determine the target injection volume corresponding to the target load position based on the first corresponding relationship, so that the injection pump can quantitatively inject liquid into the battery cell according to the target injection volume.

[0107] It is understandable that in some scenarios, the amount of liquid injection required for each battery cell is different, which belongs to a non-quantitative liquid injection scenario. The quantitative liquid injection mode cannot be used for liquid injection, and the appropriate target liquid injection amount must be determined for the battery cell based on actual needs. For example, for the scenario of secondary liquid injection of the battery cell, the amount of liquid injection required for each battery cell will be different. Therefore, in the non-quantitative liquid injection scenario, the quantitative liquid injection mode can be turned off. In some scenarios, the amount of liquid injection required for each battery cell is the same, which belongs to the quantitative liquid injection scenario, and the quantitative liquid injection mode can be used for liquid injection. For example, for the scenario of the first liquid injection of the battery cell or the liquid injection test scenario, a fixed liquid injection amount can be used to inject the battery cell. Therefore, in the quantitative liquid injection scenario, the quantitative liquid injection mode can be turned on.

[0108] In this way, since the target injection amount corresponding to the target carrying position can be determined according to the first corresponding relationship when the quantitative injection mode is turned off, the injection needs of the battery cells to be injected in each carrying position of the battery tray in the non-quantitative injection scenario can be better met.

[0109] In some embodiments, the host computer 120 is used to obtain a preset injection volume when the switch state is the second state, and determine the preset injection volume as a target injection volume corresponding to the target bearing position; the second state indicates that the quantitative injection mode is turned on.

[0110] Here, the preset injection volume can be any suitable pre-set injection volume, and the embodiments of the present disclosure are not limited to this.

[0111] For example, the preset injection volume may be a value set by an operator according to an actual application scenario, or may be a default value set by the host computer 120 .

[0112] In this way, when the quantitative injection mode is turned on, the preset injection volume can be determined as the target injection volume corresponding to the target carrying position, thereby supporting the issuance of the injection volume for the quantitative injection scenario to meet the quantitative injection requirements of the battery cells to be injected in each carrying position of the battery cell tray.

[0113] In some embodiments, the host computer 120 has a first display interface, and the first display interface includes a mode configuration area;

[0114] The host computer 120 is configured to set the switch state to the first state in response to receiving a closing operation of the quantitative injection mode in the mode configuration area;

[0115] Alternatively, the host computer 120 is configured to set the switch state to the second state in response to receiving an operation to start the quantitative injection mode in the mode configuration area.

[0116] During implementation, the interface layout of the first display interface of the host computer, the interface layout of the mode configuration area in the first display interface, and the operation method of the on / off operation of the quantitative injection mode can be determined by those skilled in the art based on actual conditions, and the embodiments of the present disclosure are not limited to this.

[0117] For example, referring to FIG. 2 , the first display interface 200 may include a mode configuration area 210 , and the operator may activate / deactivate the quantitative injection mode by triggering a switch control 211 in the mode configuration area 210 .

[0118] In this way, the quantitative injection mode can be flexibly turned on or off in the mode configuration area of ​​the first display interface of the host computer, so as to adapt to different injection scenarios to better meet actual production needs.

[0119] In some embodiments, the first display interface further includes a liquid injection volume configuration area;

[0120] The host computer 120 is configured to obtain a preset injection volume in response to receiving an injection volume setting operation performed in the injection volume configuration area.

[0121] During implementation, the interface layout of the injection volume configuration area and the operation method of the injection volume setting operation can be determined by those skilled in the art based on actual conditions, and the embodiments of the present disclosure are not limited to this.

[0122] For example, referring to FIG. 2 , the first display interface 200 may further include an injection volume configuration area 220 , and the operator may input a preset injection volume in the input control 221 in the injection volume configuration area 220 to implement the injection volume setting operation.

[0123] In this way, the appropriate preset injection volume can be set in the injection volume configuration area of ​​the first display interface of the host computer according to actual needs, so as to better meet the quantitative injection needs in the actual production process.

[0124] In some embodiments, the control device 130 is configured to: obtain the injection data of the battery cell during the battery cell injection process, and send a data acquisition signal to the host computer 120 in response to determining that the injection of at least one battery cell carried in the battery cell tray is completed;

[0125] The host computer 120 is used to obtain the injection data of at least one battery cell from the control device 130 in response to receiving the data acquisition signal, and for each battery cell, bind the injection data of the battery cell and the carrying position of the battery cell in the battery cell tray and store them locally in the host computer 120.

[0126] The liquid injection data of the battery cell may include liquid injection process data of the battery cell, for example, at least one of the liquid injection amount, liquid injection time, liquid injection amount, weighing result before liquid injection, etc.

[0127] In some embodiments, the control device 130 can obtain the injection data of the battery cell during the battery cell injection process and store the injection data of the battery cell using the position of the battery cell in the battery cell tray as an index. After receiving the data acquisition signal, the host computer 120 can obtain the injection data of the battery cell corresponding to the position of the battery cell in the battery cell tray from the control device 130 based on the position of the battery cell.

[0128] In some embodiments, the control device 130 can obtain the injection data of the battery cell during the battery cell injection process and store the injection data of the battery cell using the battery cell code of the battery cell as an index. The host computer 120 can pre-store the correspondence between the position of each battery cell placed in the battery cell tray and the battery cell code. When receiving the data acquisition signal, the host computer 120 can query the correspondence based on the position of the battery cell in the tray to obtain the battery cell code of the battery cell, and obtain the injection data of the battery cell corresponding to the battery cell code from the control device 130.

[0129] After all cells in the cell tray are filled with liquid, the control device 130 can send a data acquisition signal to the host computer 120 to instruct the host computer 120 to obtain the liquid injection data of all cells. The control device 130 can also send a data acquisition signal to the host computer 120 immediately after a cell in the cell tray is filled with liquid to instruct the host computer 120 to obtain the liquid injection data of the cell, without waiting for all cells in the cell set to be filled with liquid.

[0130] In the above embodiment, the host computer can collect and record the liquid injection data of the battery cell locally after the liquid injection of the battery cell is completed. Moreover, by binding and storing the liquid injection data of the battery cell and the carrying position of the battery cell in the battery cell tray, it can be convenient to obtain the liquid injection data of the corresponding battery cell based on the carrying position in the battery cell tray in the subsequent process. In addition, after determining that the liquid injection of the battery cell is completed, the control device can control the host computer to collect and record the liquid injection data of the battery cell in a timely manner by sending a data acquisition signal to the host computer, thereby reducing the probability of liquid injection data loss due to abnormal conditions such as power failure of the control device, and improving the reliability of liquid injection data collection and the stability of the operation of the liquid injection system.

[0131] For example, since the battery cell filling is completed, the battery cell filling data is collected and recorded locally by the host computer, the battery cell can quickly and reliably obtain the battery cell filling data from the host computer before arriving at the unloading area and preparing to leave the station, without relying on the data transmission between the control equipment of the filling station and the control equipment of the unloading area. Therefore, there is no need to consider whether there are other logistics lines between the filling station and the unloading area, and it can adapt to more filling scenarios.

[0132] In some embodiments, the host computer 120 is used to determine the liquid injection completion status of the battery cell based on the liquid injection data of the battery cell, and bind and store the liquid injection data of the battery cell, the carrying position of the battery cell in the battery cell tray, and the liquid injection completion status locally on the host computer 120.

[0133] In this way, by binding and storing the battery cell's injection data, the battery cell's carrying position in the battery cell tray, and the injection completion status locally on the host computer, it is convenient to quickly and accurately obtain the battery cell's injection data and / or determine whether the battery cell is injected according to the battery cell's carrying position in the battery cell tray in the subsequent process.

[0134] For example, in the subsequent battery tray entry process, the host computer 120 can determine whether the battery cells in the battery tray have been filled with liquid based on the locally bound and stored battery cell filling data, the battery cell's carrying position in the battery tray, and the filling completion status, and remove the battery cells that have been filled with liquid from the list of batteries to be filled. After obtaining the updated list of batteries to be filled, the host computer 120 sends a battery cell entry request to the production execution system based on the updated list of batteries to be filled. In this way, the situation of repeated battery cell filling can be reduced, product quality and production efficiency can be improved, and material waste can be reduced, saving production costs.

[0135] In some embodiments, the host computer 120 has a second display interface, which includes a data deletion area. The host computer 120 is configured to, in response to receiving a liquid filling data deletion operation performed in the data deletion area, obtain a tray identifier and / or a battery cell identifier for which data is to be deleted, and determine and locally delete the liquid filling data corresponding to at least one battery cell based on the tray identifier and / or the battery cell identifier.

[0136] Here, the tray identifier may be the tray identifier of the cell tray to which the cell whose injection data is to be deleted belongs. The cell identifier may be the cell identifier of the cell whose injection data is to be deleted. The cell identifier may include but is not limited to at least one of the cell barcode, the tray code of the cell tray carrying the cell, and the carrying position of the cell in the cell tray.

[0137] In some embodiments, the injection data deletion operation performed in the data deletion area may be an operation to delete the injection data of all battery cells in a battery cell tray. In response to the injection data deletion operation, the host computer 120 may obtain the tray identifier of the battery cell tray to be deleted, identify at least one battery cell in the battery cell tray based on the tray identifier, and delete the injection data corresponding to the at least one battery cell from the host computer 120 locally.

[0138] In some embodiments, the injection data deletion operation performed in the data deletion area may be an operation to delete the injection data of a certain battery cell, and the battery cell identification may include the battery cell barcode of the battery cell. In response to the injection data deletion operation, the host computer 120 may obtain the battery cell barcode of the battery cell to be deleted and, based on the battery cell barcode, delete the injection data of the battery cell from the host computer 120 locally.

[0139] In some embodiments, the injection data deletion operation performed in the data deletion area may be an operation to delete the injection data of a battery cell located at a certain position in a certain battery cell tray, and the battery cell identifier may include the position of the battery cell in the battery cell tray. In response to the injection data deletion operation, the host computer 120 may obtain the tray identifier of the battery cell tray where the battery cell to be deleted is located, as well as the position of the battery cell in the battery cell tray, and based on the tray identifier and the position, determine and delete the injection data of the battery cell locally from the host computer 120.

[0140] During implementation, the interface layout of the data deletion area and the operation method of the injection data deletion operation can be determined by those skilled in the art according to actual conditions, and the embodiments of the present disclosure are not limited thereto.

[0141] In some embodiments, the data deletion area may include a battery cell list, which may include at least one battery cell for which injection data is locally recorded on the host computer 120. Each battery cell in the battery cell list may correspond to a data deletion control. The injection data deletion operation may include triggering the data deletion control corresponding to at least one battery cell. An operator can delete the injection data for a battery cell from the host computer 120 by triggering the data deletion control corresponding to the battery cell in the data deletion area.

[0142] In some embodiments, the data deletion area may include a pallet identification input control and / or a cell identification input control, and the operator can input the pallet identification through the pallet identification input control and / or the cell identification through the cell identification input control to trigger the injection data deletion operation.

[0143] For example, referring to FIG3 , the second display interface 300 may include a data deletion area 310, which may include a tray identifier input control 311, a tray data deletion control 312, a cell identifier input control 313, and a cell data deletion control 314. An operator may use the tray identifier input control 311 to input the identifier of the tray to be deleted and trigger the tray data deletion control 312 to perform a liquid injection data deletion operation. In response to the liquid injection data deletion operation, the host computer may, based on the tray identifier, identify at least one cell in the cell tray and delete the liquid injection data corresponding to the at least one cell from the host computer. An operator may use the cell identifier input control 313 to input the identifier of the cell to be deleted and trigger the cell data deletion control 314 to perform a liquid injection data deletion operation. In response to the liquid injection data deletion operation, the host computer may obtain the input cell barcode, determine the cell to be deleted based on the cell barcode, and delete the liquid injection data for the cell from the host computer.

[0144] In this way, the operator can delete the injection data corresponding to the specific first pallet identification and / or battery cell identification through the injection data deletion operation in the data deletion area, thereby reducing the problem that the battery cells that have not actually completed the injection are mistakenly recorded with the corresponding injection data under abnormal circumstances, resulting in the inability to inject liquid.

[0145] The present disclosure provides a method for liquid injection, which can be executed by a host computer. FIG4 is a schematic diagram of a flow chart of a liquid injection method provided by the present disclosure. As shown in FIG4 , the method can include the following steps S401 to S404:

[0146] Step S401, obtaining pump information of a target injection pump of a liquid currently to be prepared in an injection device from a control device;

[0147] Step S402 , determining a target carrying position corresponding to the target injection pump from various carrying positions of the battery cell tray currently entering the injection device based on the pump information;

[0148] Step S403: determining a target injection parameter corresponding to the target bearing position based on a first corresponding relationship, wherein the first corresponding relationship includes at least one injection parameter corresponding to each of the bearing positions;

[0149] Step S404 : sending the target injection parameters to the target injection pump, so that the target injection pump prepares the liquid according to the target injection parameters and injects the liquid into the battery cell located in the target carrying position after the preparation.

[0150] In the injection method of the embodiment of the present disclosure, the host computer first obtains the pump information of the target injection pump currently waiting for liquid in the injection equipment from the control device; then, based on the pump information, determines the target carrying position corresponding to the target injection pump from each carrying position of the battery tray currently entering the injection equipment; finally, based on the first corresponding relationship, determines the target injection parameters corresponding to the target carrying position, and sends the target injection parameters to the target injection pump, wherein the first corresponding relationship includes the injection parameters corresponding to at least one carrying position of the battery tray. In this way, on the one hand, there is no need to set a cell code for each battery cell in the tray, so that the host computer does not need to write the cell code into the control device during the battery cell injection station process, and the control device does not need to record the cell code of each battery cell in the battery tray during the injection process; on the other hand, in the liquid preparation process, the control device does not need to provide the cell code of the battery cell currently waiting for injection to the host computer. In this way, the interaction process between the host computer and the control device in the injection process can be simplified, the number of point interactions between the host computer and the control device can be reduced, the speed of battery cell injection into the station and the speed of the host computer sending injection parameters to the injection pump can be accelerated, thereby reducing the overall duration of the injection process and improving production efficiency.

[0151] In some embodiments, the injection device includes at least one injection pump, each of which corresponds to N loading positions in the battery tray. The injection pump is used to inject liquid into the battery cells in the corresponding N loading positions in N batches, where N is a positive integer and does not exceed the total number of loading positions in the battery tray; the pump information includes the pump number and / or the current injection batch. The above step S402 may include the following step S411:

[0152] Step S411 : determining a target carrying position currently corresponding to the target injection pump among the carrying positions of the battery cell tray based on the pump number and / or the current injection batch.

[0153] In this way, the host computer can simply and quickly determine the current target carrying position corresponding to the target injection pump through the pump number and / or current injection batch of the target injection pump provided by the control device, thereby further reducing the number of point interactions between the host computer and the control device.

[0154] In some embodiments, N is greater than 1; the above step S411 may include the following steps S421 to S422:

[0155] Step S421, determining N carrying positions corresponding to the target injection pump among the carrying positions of the battery cell tray based on the pump number;

[0156] Step S422 : Based on the current injection batch, determine the target carrying position currently corresponding to the target injection pump from the N carrying positions.

[0157] In this way, the host computer can quickly and accurately determine the current target load position corresponding to the target injection pump.

[0158] In some embodiments, the injection device is provided with a plurality of injection pumps, the plurality of injection pumps corresponding to each of the carrying positions, and the pump information includes a pump number. The above step S402 may include the following step S431:

[0159] Step S431 : determining the target carrying position currently corresponding to the target infusion pump based on the pump number and a second corresponding relationship; the second corresponding relationship represents a one-to-one correspondence between at least one pump number and each of the carrying positions.

[0160] In this way, the target carrying position currently corresponding to the target injection pump can be determined quickly and accurately based on the pump number of the target injection pump and the one-to-one correspondence between at least one pump number and each carrying position in the battery cell tray.

[0161] In some embodiments, before the above step S401, the above injection method further includes: in the entry process of the battery cell tray into the injection equipment, obtaining the first corresponding relationship from the production execution system, and recording the first corresponding relationship locally on the host computer.

[0162] In this way, in the process of the battery cell tray entering the station, the host computer can obtain the first corresponding relationship from the production execution system, so as to determine the target liquid injection parameters corresponding to the target carrying position based on the first corresponding relationship in the liquid preparation process, without the need for the host computer to send the cell code of each battery cell in the battery cell tray to the control device, thereby reducing the interaction between the host computer and the control device in the process of entering the station and speeding up the entry of the battery cell tray.

[0163] In some embodiments, the injection parameters include the injection volume. The above step S403 may include the following steps S441 to S442:

[0164] Step S441, obtaining the switch status of the quantitative injection mode;

[0165] Step S442 : When the switch state is the first state, determine the target injection volume corresponding to the target carrying position based on the first corresponding relationship; the first state indicates that the quantitative injection mode is turned off.

[0166] In this way, when the quantitative injection mode is turned off, the target injection amount corresponding to the target carrying position can be determined according to the first corresponding relationship, thereby better meeting the injection requirements of the battery cells to be injected in each carrying position of the battery tray in the non-quantitative injection scenario.

[0167] In some embodiments, the injection method further includes the following steps S451 to S452:

[0168] Step S451, when the switch state is in the second state, obtaining a preset injection volume; the second state indicates that the quantitative injection mode is turned on;

[0169] Step S452: determining the preset liquid injection volume as the target liquid injection volume corresponding to the target bearing position.

[0170] In this way, when the quantitative injection mode is turned on, the preset injection volume can be determined as the target injection volume corresponding to the target carrying position, thereby supporting the issuance of the injection volume for the quantitative injection scenario to meet the quantitative injection requirements of the battery cells to be injected in each carrying position of the battery cell tray.

[0171] In some embodiments, the host computer has a first display interface, and the first display interface includes a mode configuration area. The above-mentioned injection method may further include the following steps S461 or S462:

[0172] Step S461, in response to receiving a closing operation of the quantitative injection mode in the mode configuration area, setting the switch state to the first state;

[0173] Step S462: in response to receiving the start operation of the quantitative injection mode in the mode configuration area, setting the switch state to the second state.

[0174] In this way, the quantitative injection mode can be flexibly turned on or off in the mode configuration area of ​​the first display interface of the host computer, so as to adapt to different injection scenarios to better meet actual production needs.

[0175] In some embodiments, the first display interface further includes an injection volume configuration area. The step S451 of obtaining the preset injection volume may include the following step S471:

[0176] Step S471 , in response to receiving the injection volume setting operation performed in the injection volume configuration area, obtaining the set preset injection volume.

[0177] In this way, the appropriate preset injection volume can be set in the injection volume configuration area of ​​the first display interface of the host computer according to actual needs, so as to better meet the quantitative injection needs in the actual production process.

[0178] In some embodiments, the liquid injection method may further include the following steps S481 to S482:

[0179] Step S481, in response to receiving a data acquisition signal sent by the control device, obtaining, from the control device, injection data of at least one battery cell carried in the battery cell tray; wherein the data acquisition signal is sent by the control device after determining that injection of the at least one battery cell is complete, and the injection data of the battery cell is obtained by the control device during the battery cell injection process;

[0180] Step S482 : For each of the battery cells, the liquid injection data of the battery cell and the carrying position of the battery cell in the battery cell tray are bound and stored locally in the host computer.

[0181] In this way, the host computer can collect and record the cell injection data locally after the cell injection is completed. Moreover, by binding and storing the cell injection data and the cell's carrying position in the cell tray, it is convenient to obtain the corresponding cell injection data based on the carrying position in the cell tray in the subsequent process. In addition, after determining that the cell injection is completed, the control device can control the host computer to collect and record the cell injection data in a timely manner by sending a data acquisition signal to the host computer, reducing the probability of injection data loss due to abnormal conditions such as power failure of the control device, and improving the reliability of injection data collection and the stability of the injection system operation.

[0182] In some embodiments, the step S482 described above of binding and storing the injection data of the battery cell and the carrying position of the battery cell in the battery cell tray locally on the host computer may include the following steps S491 to S492:

[0183] Step S491, determining the completion status of the battery cell's injection based on the battery cell's injection data;

[0184] Step S492 : Bind and store the liquid injection data of the battery cell, the carrying position of the battery cell in the battery cell tray, and the liquid injection completion status locally in the host computer.

[0185] In this way, by binding and storing the battery cell's injection data, the battery cell's carrying position in the battery cell tray, and the injection completion status locally on the host computer, it is convenient to quickly and accurately obtain the battery cell's injection data and / or determine whether the battery cell is injected according to the battery cell's carrying position in the battery cell tray in the subsequent process.

[0186] The following takes the secondary liquid injection process of the battery cell as an example to illustrate the liquid injection method provided by the embodiment of the present disclosure.

[0187] In the related art, the secondary liquid injection process of the battery cell usually adopts a multi-channel liquid injection method, and multiple liquid injection channels are set inside the liquid injection equipment, and the liquid injection channels are allocated to each battery cell to be injected according to the idle status of each liquid injection channel for injection. In the process of the battery cell scanning the code to enter the station, the battery cell code of each battery cell is written into the PLC of the liquid injection station by the host computer, and in the liquid preparation process, the host computer will obtain the battery cell code of the battery cell to be injected corresponding to the liquid injection pump from the control device, and send the liquid injection parameters corresponding to the battery cell code to the liquid injection pump. After the liquid injection equipment completes the liquid injection of the battery cell, the PLC will bind the liquid injection data of the battery cell with the battery cell code and record it. When the battery cell scans the code to leave the station, the host computer will collect the liquid injection data of the battery cell from the PLC to complete the battery cell exit process.

[0188] However, the above-mentioned injection method in the related art has at least the following problems:

[0189] 1) It is not suitable for the secondary injection process using the tray-type injection method. In the secondary injection process, the injection amount of each battery cell is different. If the channel preparation method is used, a cell code must be set for each battery cell in the tray. When the battery tray scans the code to enter the station, the cell code of each battery cell carried in the battery tray must be written into the PLC. This increases the number of interactions between the PLC and the host computer, which is not conducive to improving production efficiency.

[0190] 2) After the control equipment at the filling station collects the filling data of the battery cell, it can transmit the filling data to the control equipment in the unloading area, thereby facilitating the upload of the filling data during the battery cell outbound process. However, for the filling process using a tray-type filling method, other logistics lines from different suppliers may exist between the filling station and the unloading area. Assigning battery cell pallets to different unloading stations makes it impossible to transmit data between the control equipment of the filling station and the unloading area, resulting in the inability to upload the battery cell filling data during the battery cell outbound process.

[0191] On this basis, an embodiment of the present disclosure provides a liquid injection method, in which a process for sending the liquid injection amount of a battery cell, a process for collecting the liquid injection data of the battery cell, and a process for marking the completion status of the liquid injection of the battery cell are designed.

[0192] FIG5 is a schematic diagram of a process for sending the amount of liquid injected into a battery cell according to an embodiment of the present disclosure. As shown in FIG5 , the process for sending the amount of liquid injected into a battery cell according to an embodiment of the present disclosure includes the following steps S501 to S516:

[0193] Step S501: The host computer software is initialized and the connection to the PLC and injection pump of the injection station is successful, and the process of issuing the battery cell injection amount is started;

[0194] In step S502, in response to detecting that the injection pump has reached the injection position, the PLC sets the signal value of the parameter sending trigger point in the PLC to True.

[0195] It can be understood that, at this time, the injection pump is the target injection pump to be prepared.

[0196] Step S503: When the host computer reads the signal value of the parameter trigger point and finds that it is True, it obtains the pump number and the current injection batch of the injection pump, and determines the target load position corresponding to the injection pump based on the pump number and the current injection batch;

[0197] Step S504: the host computer queries the local database for the target liquid injection volume corresponding to the target bearing position;

[0198] Here, the host computer can obtain and record in the local database the liquid filling amount corresponding to at least one carrying position in the battery tray during the process of the battery tray scanning the code to enter the station.

[0199] Step S505: The host computer determines whether the target injection volume is found;

[0200] If not, go to step S506; if so, go to step S507.

[0201] Step S506: The host computer writes the first result value to the parameter sending result point in the PLC;

[0202] The first result value indicates that the injection parameters have failed to be sent.

[0203] In some implementations, the PLC may enter an exception handling process when it reads a first result value from a parameter delivery result point.

[0204] Step S507: The host computer determines whether the quantitative injection mode is turned on;

[0205] If so, go to step S508; if not, go to step S509.

[0206] Step S508: The host computer reads the preset injection volume and uses the preset injection volume as the target injection volume;

[0207] Step S509: The host computer sends the target injection volume to the injection pump;

[0208] Step S510: The injection pump records the target injection volume and returns the recorded result to the host computer;

[0209] Step S511: The host computer determines whether the target injection volume is successfully issued based on the recorded results;

[0210] If so, go to step S512; if not, go to step S506.

[0211] Step S512: The host computer reads the target injection volume from the injection pump;

[0212] Step S513, the host computer determines whether the target injection volume is read successfully;

[0213] If so, go to step S514; if not, go to step S506.

[0214] Step S514: The host computer determines whether the read target injection volume is consistent with the issued target injection volume;

[0215] If so, go to step S515; if not, go to step S506.

[0216] Step S515: The host computer writes the second result value to the parameter sending result point in the PLC;

[0217] The second result value indicates that the injection parameters were sent successfully.

[0218] In step S516, the host computer determines whether the value of the parameter sending result point is reset to 0.

[0219] Here, the PLC can reset the value of the parameter sending result point to 0 before the next battery cell filling amount sending process. If it is determined that the value of the parameter sending result point has been reset to 0, the current battery cell filling amount sending process is terminated.

[0220] It can be understood that the above-mentioned process of sending the battery cell injection amount corresponds to the liquid preparation process of the injection pump.

[0221] In the injection method provided by the embodiment of the present disclosure, based on the above-mentioned process of sending the battery cell injection amount, the number of interactions between the host computer and the PLC can be reduced, and the sending of the battery cell injection amount data can be accelerated.

[0222] FIG6 is a schematic diagram of a process for collecting battery cell injection data according to an embodiment of the present disclosure. As shown in FIG6 , the process for collecting battery cell injection data includes the following steps S601 to S609:

[0223] Step S601: After the host computer software is initialized and the connection to the PLC of the injection station is successful, the second injection data collection process is started;

[0224] In step S602 , after the PLC determines that the liquid injection device has completed the liquid injection into each battery cell in the battery cell tray, the PLC sets the signal value of the data acquisition signal point in the PLC to True.

[0225] Step S603: The host computer reads the signal value of the data acquisition signal point;

[0226] Step S604: When the host computer reads the signal value of the data acquisition signal point as True, it obtains the liquid injection data of each battery cell in the battery cell tray from the PLC and sets the signal value of the data acquisition signal point to False;

[0227] Step S605: The host computer records the collected battery cell injection data into a local database;

[0228] Step S606: The host computer determines whether the collection of the liquid injection data of each battery cell in the battery cell tray is completed;

[0229] If so, go to step S607; if not, go to step S608.

[0230] Step S607: The host computer writes the first acquisition result value to the data acquisition result point in the PLC.

[0231] The first collection result value may indicate that the injection data of each battery cell in the battery cell tray is successfully collected and recorded.

[0232] Step S608: The host computer writes the second acquisition result value to the data acquisition result point in the PLC.

[0233] The second collection result value may indicate that the liquid injection data of at least one battery cell in the battery cell tray was not collected and recorded successfully.

[0234] In step S609, the host computer determines whether the value of the data acquisition result point is zero.

[0235] Here, the PLC can reset the value of the data collection result point to 0 before the next battery cell injection data collection process. If it is determined that the value of the data collection result point has been reset to 0, the current battery cell injection data collection process is terminated.

[0236] In the injection method provided by the embodiment of the present disclosure, based on the above-mentioned battery cell injection data collection process, the battery cell injection data can be recorded immediately after the battery cell injection is completed, and by binding the battery cell injection data with the carrying position of the battery cell in the battery cell tray for storage, the data in the tray can be kept consistent.

[0237] In some embodiments, after recording the liquid injection data of the battery cell into the local database, the host computer may further mark the liquid injection completion status of the battery cell as liquid injection completed.

[0238] FIG7 is a schematic diagram of a process for marking the completion status of a battery cell injection provided by an embodiment of the present disclosure. As shown in FIG7 , a process for marking the completion status of a battery cell injection provided by an embodiment of the present disclosure may include the following steps S701 to S704:

[0239] Step S701: The host computer starts the process of collecting liquid injection data of the battery cell;

[0240] Step S702: The host computer collects the battery cell injection data from the PLC;

[0241] Step S703: The host computer stores the liquid injection data of the battery cell, the position of the battery cell in the battery cell tray, and the liquid injection completion status of the battery cell locally;

[0242] Here, the battery cell's liquid filling completion status is marked as liquid filling completed.

[0243] Step S704: Upload the battery cell injection data to the MES.

[0244] In some embodiments, an asynchronous multi-threaded approach can be used to simultaneously start multiple data processing threads to collect and store the injection data of each battery cell carried in the battery cell tray, so as to improve the efficiency of the injection data collection and storage. For example, when the number of battery cells carried in the battery cell tray is 24, 24 threads can be started simultaneously to collect and store the injection data of each battery cell respectively. During implementation, an atomic accumulation technique can also be used to set a count variable with an initial value of 0. After each data processing thread in the host computer collects and stores the injection data of a battery cell, the count variable is increased by 1 until the value of the count variable is equal to the number of battery cells carried in the battery cell tray.

[0245] It should be pointed out here that the above description of the various embodiments tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other.

[0246] 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 disclosure. 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 the various embodiments of the present disclosure, the size of the serial numbers of the above-mentioned steps / processes 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 embodiments of the present disclosure. The serial numbers of the embodiments of the present disclosure are for description only and do not represent the advantages and disadvantages of the embodiments.

[0247] It should be noted that, as used herein, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or device comprising a set of elements includes not only those elements but also other elements not explicitly listed, or includes elements inherent to such process, method, article, or device. Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of other identical elements in the process, method, article, or device comprising that element. In the several embodiments provided herein, it should be understood that the disclosed controllers and methods can be implemented in other ways. The controller embodiments described above are merely illustrative. For example, the division of the units described is merely a logical functional division. In actual implementation, other divisions may be employed, such as combining multiple units or components, integrating them into another system, or omitting or disabling certain features. Furthermore, the coupling, direct coupling, or communication connection between the components shown or discussed may be through interfaces, while the indirect coupling or communication connection between the controller or units may be electrical, mechanical, or other.

[0248] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the functional units in the various embodiments of the present disclosure may all be 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-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0249] The above is only an embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or replacements that can be easily conceived by any technician familiar with this technical field within the technical scope disclosed in this disclosure should be covered by the protection scope of the present disclosure.

Claims

1. A liquid injection system comprising: Liquid injection equipment, a host computer and a control device; wherein the liquid injection equipment includes at least one liquid injection pump; The control device is used to send pump information of the target injection pump of the current liquid to be prepared in the injection device to the host computer; The host computer is configured to: obtain the pump information from the control device; determine, based on the pump information, a target carrying position currently corresponding to the target injection pump from each carrying position of the battery cell tray currently entering the injection device; determine, based on a first correspondence, a target injection parameter corresponding to the target carrying position, wherein the first correspondence includes an injection parameter corresponding to at least one of the carrying positions; and send the target injection parameter to the target injection pump; The target injection pump is used to prepare liquid according to the target injection parameters, and to inject liquid into the battery cell located in the target carrying position after preparing the liquid.

2. The liquid injection system according to claim 1, wherein: Each of the injection pumps corresponds to N loading positions in the battery tray, and is used to inject liquid into the battery cells in the corresponding N loading positions in N batches, where N is a positive integer and does not exceed the total number of loading positions in the battery tray; the pump information includes a pump number and / or a current injection batch; The host computer is configured to determine, based on the pump number and / or the current injection batch, a target carrying position of the battery cell tray that currently corresponds to the target injection pump.

3. The liquid injection system according to claim 2, wherein: N is greater than 1; The host computer is used to: determine N carrying positions corresponding to the target injection pump among the various carrying positions of the battery cell tray based on the pump number; and determine the target carrying position currently corresponding to the target injection pump from the N carrying positions based on the current injection batch.

4. The liquid injection system according to claim 1, wherein: The injection device is provided with a plurality of injection pumps, the plurality of injection pumps correspond one to one with each of the carrying positions, and the pump information includes a pump number; The host computer is used to determine the target carrying position currently corresponding to the target injection pump based on the pump number and a second corresponding relationship; the second corresponding relationship represents a one-to-one correspondence between at least one pump number and each of the carrying positions.

5. The liquid injection system according to any one of claims 1 to 4, wherein: The host computer is configured to obtain the first corresponding relationship from the production execution system during the entry process of the battery cell tray into the liquid injection equipment, and record the first corresponding relationship locally on the host computer.

6. The liquid injection system according to any one of claims 1 to 5, wherein: The injection parameters include injection volume; The host computer is configured to: obtain a switch state of the quantitative liquid injection mode; and when the switch state is a first state, determine a target liquid injection volume corresponding to the target bearing position based on the first corresponding relationship; The first state indicates that the quantitative injection mode is turned off.

7. The liquid injection system according to claim 6, wherein: The host computer is configured to obtain a preset liquid injection volume when the switch state is the second state, and determine the preset liquid injection volume as a target liquid injection volume corresponding to the target bearing position; The second state indicates that the quantitative injection mode is turned on.

8. The liquid injection system according to claim 7, wherein: The host computer has a first display interface, which includes a mode configuration area; The host computer is configured to set the switch state to the first state in response to receiving a closing operation of the quantitative injection mode performed in the mode configuration area; Alternatively, the host computer is configured to set the switch state to the second state in response to receiving an operation to start the quantitative injection mode in the mode configuration area.

9. The liquid injection system according to claim 8, wherein: The first display interface also includes an injection volume configuration area; The host computer is configured to obtain the preset injection volume in response to receiving an injection volume setting operation performed in the injection volume configuration area.

10. The liquid injection system according to any one of claims 1 to 9, wherein: The control device is configured to: obtain the injection data of the battery cell during the battery cell injection process, and send a data acquisition signal to the host computer in response to determining that the injection of at least one battery cell carried in the battery cell tray is completed; The host computer is used to obtain the injection data of the at least one battery cell from the control device in response to receiving the data acquisition signal, and for each battery cell, bind the injection data of the battery cell and the carrying position of the battery cell in the battery cell tray and store them locally on the host computer.

11. The liquid injection system according to claim 10, wherein: The host computer is used to determine the liquid injection completion status of the battery cell based on the liquid injection data of the battery cell, and bind and store the liquid injection data of the battery cell, the carrying position of the battery cell in the battery cell tray and the liquid injection completion status locally in the host computer.

12. A liquid injection method, applied to a host computer, comprising: Obtaining pump information of a target injection pump of a liquid currently to be prepared in the injection device from the control device; Based on the pump information, determining a target carrying position currently corresponding to the target injection pump from various carrying positions of the battery cell tray currently entering the injection device; Determining target injection parameters corresponding to the target bearing positions based on a first corresponding relationship, wherein the first corresponding relationship includes at least one injection parameter corresponding to each of the bearing positions; The target injection parameters are sent to the target injection pump, so that the target injection pump prepares the liquid according to the target injection parameters and injects the liquid into the battery cell located in the target carrying position after the liquid is prepared.

13. The liquid injection method according to claim 12, wherein: The injection device includes at least one injection pump, each of the injection pumps corresponding to N loading positions in the battery cell tray, and the injection pump is used to inject liquid into the battery cells in the corresponding N loading positions in N batches, where N is a positive integer and does not exceed the total number of loading positions in the battery cell tray; the pump information includes a pump number and / or a current injection batch; The step of determining, based on the pump information, a target carrying position corresponding to the target injection pump from various carrying positions of the battery cell tray currently entering the injection device, includes: Based on the pump number and / or the current injection batch, a target carrying position currently corresponding to the target injection pump among the carrying positions of the battery cell tray is determined.

14. The liquid injection method according to claim 13, wherein: N is greater than 1; The determining, based on the pump number and / or the current injection batch, a target carrying position currently corresponding to the target injection pump among the carrying positions of the battery cell tray includes: Based on the pump number, determining N carrying positions corresponding to the target injection pump among the carrying positions of the battery cell tray; Based on the current injection batch, the target carrying position currently corresponding to the target injection pump is determined from the N carrying positions.

15. The liquid injection method according to claim 12, wherein: The injection device is provided with a plurality of injection pumps, the plurality of injection pumps correspond one to one with each of the carrying positions, and the pump information includes a pump number; The step of determining, based on the pump information, a target carrying position corresponding to the target injection pump from various carrying positions of the battery cell tray currently entering the injection device, includes: Determining a target bearing position currently corresponding to the target injection pump based on the pump number and the second corresponding relationship; The second corresponding relationship represents a one-to-one corresponding relationship between at least one pump number and each of the carrying positions.

16. The liquid injection method according to any one of claims 12 to 15, wherein: The injection parameters include injection volume; The determining, based on the first corresponding relationship, a target injection parameter corresponding to the target bearing position includes: Get the switch status of the quantitative injection mode; When the switch state is the first state, the target injection volume corresponding to the target carrying position is determined based on the first corresponding relationship; the first state indicates that the quantitative injection mode is turned off.

17. The liquid injection method according to claim 16, wherein: The liquid injection method further comprises: When the switch state is in the second state, obtaining a preset injection volume; the second state indicates that the quantitative injection mode is turned on; The preset liquid injection volume is determined as a target liquid injection volume corresponding to the target bearing position.

18. The liquid injection method according to any one of claims 12 to 17, wherein: The liquid injection method further comprises: In response to receiving a data acquisition signal sent by the control device, obtaining, from the control device, injection data of at least one battery cell carried in the battery cell tray; wherein the data acquisition signal is sent by the control device after determining that injection of the at least one battery cell is complete, and the injection data of the battery cell is obtained by the control device during the battery cell injection process; For each of the battery cells, the liquid injection data of the battery cell and the carrying position of the battery cell in the battery cell tray are bound and stored locally in the host computer.

19. The liquid injection method according to claim 18, wherein: Binding and storing the liquid injection data of the battery cell and the carrying position of the battery cell in the battery cell tray locally on the host computer includes: Determining a completion status of the battery cell's injection based on the battery cell's injection data; The liquid injection data of the battery cell, the carrying position of the battery cell in the battery cell tray, and the liquid injection completion status are bound and stored locally in the host computer.

20. The liquid injection method according to any one of claims 12 to 19, wherein: The method further comprises: During the entry process of the battery cell tray into the liquid injection equipment, the first corresponding relationship is acquired from the production execution system, and the first corresponding relationship is recorded locally on the host computer.

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