Electrolyte-injecting system, and battery cell electrolyte-injecting and discharging method

Abstract

An electrolyte-injecting system, and a battery cell electrolyte-injecting and discharging method. The electrolyte-injecting system comprises an electrolyte-injecting device (110), a superordinate computer (120), a first control device (130), and a weighing device (140); the electrolyte-injecting device (110) is used for performing electrolyte injection on a battery cell set in a pallet during a battery cell electrolyte-injecting process; the superordinate computer (120) is used for collecting and locally recording electrolyte injection data of battery cells on the basis of the positions of the battery cells in the pallet upon the completion of the electrolyte injection of the battery cells in the battery cell set; and the first control device (130) is used for sending a weighing trigger signal to the superordinate computer (120) in response to detecting that the battery cells having undergone electrolyte injection enter a weighing area of the weighing device (140), so that the superordinate computer (120) sends a first weighing instruction to the weighing device (140), and sends to a manufacturing execution system (MES) an electrolyte-injecting and discharging request on the basis of the locally acquired electrolyte injection data of the battery cells when a first weighing result sent by the weighing device (140) is within a preset weight range. In this way, the electrolyte injection data can be quickly and reliably acquired and uploaded to the MES during the battery cell electrolyte-injecting and discharging process in a pallet-type electrolyte injection scenario.

Description

Liquid injection system and battery cell liquid injection and exit method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202410199836.2, application date February 22, 2024, and invention name “Liquid injection system and battery cell liquid injection and exit method”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this 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 battery cell liquid injection and delivery method. Background Art

[0004] During the production process of battery products, the battery cells can be injected with liquid through the injection system. When the battery cell is injected and ready to be shipped, a request for injection shipment can be sent to the Manufacturing Execution System (MES) to upload the injection data of the battery cell to the MES system, so as to facilitate subsequent production data traceability. In the related art, after the control equipment of the injection station collects the injection data of the battery cell, the injection data can be transferred to the control equipment of the unloading area, thereby facilitating the upload of the injection data in the battery cell shipment process. However, for pallet-type injection scenarios, there may be other logistics lines from different suppliers between the injection station and the unloading area, making it impossible to transfer data between the control equipment of the injection station and the unloading area, resulting in the inability to upload the battery cell injection data during the battery cell shipment process.

[0005] Summary of the Invention

[0006] In view of this, the embodiments of the present disclosure provide at least one liquid injection system and a battery cell liquid injection outbound method, which can quickly and reliably obtain and upload liquid injection data to the MES system during the battery cell liquid injection outbound process in a tray-type liquid injection scenario, thereby facilitating subsequent production data traceability.

[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, host computer, first control equipment and weighing equipment; wherein,

[0010] The liquid injection device is used to inject liquid into the battery cell assembly placed in the tray during the battery cell liquid injection process;

[0011] The host computer is configured to collect and record the injection data of the battery cells in the battery cell assembly to a local computer based on the positions of the battery cells in the tray after the injection is completed;

[0012] The first control device is configured to send a weighing trigger signal to the host computer in response to detecting that the battery cell after being injected with liquid enters the weighing area of ​​the weighing device;

[0013] The host computer is configured to send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal;

[0014] The weighing device is configured to weigh the battery cell in response to the first weighing instruction, and obtain and send a first weighing result to the host computer;

[0015] The host computer is used to obtain the liquid injection data of the battery cell from the local computer when the first weighing result is within a preset weight range, and send a liquid injection outbound request for the battery cell to the production execution system based on the liquid injection data.

[0016] In the liquid injection system of the embodiment of the present disclosure, on the one hand, after the liquid injection of the battery cells in the battery cell set placed on the tray is completed by using the liquid injection device, the upper computer can quickly and accurately collect and record the liquid injection data of the battery cells to the upper computer locally based on the position of the battery cells in the tray; on the other hand, the first control device sends a weighing trigger signal to the upper computer in response to detecting that the battery cells after liquid injection enter the weighing area of ​​the weighing device, so that the upper computer can send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal, and receive the first weighing result sent by the weighing device after weighing the battery cell in response to the first weighing instruction. When the first weighing result is within the preset weight range, based on the liquid injection data of the battery cell obtained locally, a liquid injection outbound request for the battery cell is sent to the production execution system. In this way, in the battery cell liquid injection outbound process in the tray-type liquid injection scenario, the liquid injection data can be quickly and reliably obtained and uploaded to the MES system, facilitating subsequent production data traceability.

[0017] In some embodiments, the injection system also includes a second control device; the second control device is used to obtain the injection data of the battery cell during the battery cell injection process, and after determining that the injection device has completed the injection of the battery cell, send a data acquisition signal to the host computer; the host computer is used to respond to receiving the data acquisition signal, based on the position of the battery cell in the tray, collect the injection data of the battery cell from the second control device, and store the injection data locally.

[0018] In this way, after the second control device determines that the injection device has completed the injection of the battery cell, it can control the upper computer to timely collect the injection data of the battery cell and store it locally by sending a data acquisition signal to the upper computer, thereby reducing the probability of injection data loss due to abnormal conditions such as power failure of the second control device, and improving the reliability of injection data acquisition and the stability of the injection system operation.

[0019] In some embodiments, the liquid injection system also includes a blanking module; the host computer is used to receive the outbound request result returned by the production execution system in response to the liquid injection outbound request, and when the outbound request result indicates that the request is successful, sends an outbound control signal to the first control device; the first control device is used to control the blanking module to transport the battery cell out of the liquid injection station in response to the outbound control signal.

[0020] In this way, when the outbound request result returned by the production execution system indicates that the request is successful, the host computer can simply and quickly notify the first control device through the outbound control signal, so that the first control device controls the unloading module to transport the battery cells out of the liquid filling station.

[0021] In some embodiments, the host computer is used to write the first weighing result value to the weighing result point corresponding to the weighing device in the first control device when the first weighing result is not within the preset weight range; and / or, the host computer is used to write the second weighing result value to the weighing result point when the outbound request result characterization request fails.

[0022] In this way, for different first weighing results, corresponding weighing result values ​​can be written to the weighing result points corresponding to the weighing device in the first control device, thereby facilitating the first control device to perform corresponding control operations based on the weighing result values ​​written in the weighing result points.

[0023] In some embodiments, the host computer is used to determine whether the first weighing result is within the preset weight range when it is determined that the weighing device has successfully weighed according to the first weighing result; and / or, the host computer is used to write a third weighing result value to the weighing result point when it is determined that the weighing device has failed to weigh according to the first weighing result.

[0024] In this way, on the one hand, if the weighing device successfully weighs, then determining whether the first weighing result is within the preset weight range can reduce misjudgments due to weighing failures and improve the accuracy of the judgment results. On the other hand, if the weighing device fails to weigh, writing the third weighing result value to the weighing result point can facilitate the first control device to know that the weighing device has failed based on the third weighing result value, thereby facilitating the first control device to perform subsequent exception processing.

[0025] In some embodiments, the host computer is used to send a second weighing instruction to the weighing device in response to receiving a spot inspection trigger signal for the weighing device; the weighing device is used to weigh the verification weights pre-placed on the weighing device in response to the second weighing instruction, obtain and send a second weighing result to the host computer; the host computer is used to receive the second weighing result and verify the second weighing result based on preset verification conditions to obtain the spot inspection result of the weighing device.

[0026] In this way, the degree of automation of the weighing equipment calibration process in the liquid injection system can be improved, and the impact of manual operation errors on the calibration results can be reduced, so that abnormalities of the weighing equipment can be discovered more promptly and the production quality of the battery cells can be improved.

[0027] In some embodiments, the preset verification conditions include a preset error range; the host computer is used to determine that the inspection result of the weighing device is a first inspection result when the error between the second weighing result and the reference weight of the verification weight is within the preset error range; the first inspection result indicates that the weighing device has passed the verification; and / or, the host computer is used to determine that the inspection result of the weighing device is a second inspection result when the error between the second weighing result and the reference weight exceeds the preset error range; the second inspection result indicates that the weighing device has failed the verification.

[0028] In this way, it is possible to quickly and easily determine whether the weighing equipment has passed the calibration based on the preset error range.

[0029] In some embodiments, the host computer is used to write the first inspection result value to the inspection result point corresponding to the weighing device in the first control device when it is determined that the inspection result of the weighing device is the first inspection result; and / or, the host computer is used to write the second inspection result value to the inspection result point when it is determined that the inspection result of the weighing device is the second inspection result.

[0030] In this way, for different first inspection results, corresponding weighing result values ​​can be written to the inspection result points corresponding to the weighing equipment in the first control device, so that the first control device can perform corresponding control operations based on the inspection result values ​​written in the inspection result points.

[0031] In some embodiments, the host computer is configured to upload the spot inspection result and / or the second weighing result to the production execution system if the spot inspection result is the first spot inspection result.

[0032] In this way, when the inspection result of the weighing equipment is the first inspection result indicating that the weighing equipment has passed the calibration, the host computer can automatically upload the inspection result and / or the second weighing result to the production execution system, thereby facilitating the production execution system to perform production management based on the inspection result and / or the second weighing result of the weighing equipment, thereby further improving the production quality of the battery cells.

[0033] In some embodiments, the host computer includes a first display interface, which includes a spot inspection operation area and a result upload area; the host computer is used to display a first spot inspection trigger control corresponding to the weighing device in the spot inspection operation area, and receive the spot inspection trigger signal in response to the trigger operation of the first spot inspection trigger control; and / or the host computer is used to display a result upload control in an operable manner in the result upload area when the spot inspection result is the first spot inspection result, and upload the spot inspection result and / or the second weighing result to the production execution system in response to the trigger operation of the result upload control.

[0034] In this way, on the one hand, the operator can flexibly control the host computer to receive the inspection trigger signal by triggering the first inspection trigger control corresponding to the weighing equipment, thereby flexibly controlling the host computer to perform inspection on the weighing equipment; on the other hand, since the host computer displays the result upload control in an operable manner in the result upload area when the inspection result of the weighing equipment is the first inspection result indicating that the weighing equipment has passed the verification, the operator only needs to use the upload control to upload the inspection result and / or the second weighing result to the production execution system when the weighing equipment has passed the verification, thereby reducing the impact of human operation errors on production management.

[0035] In some embodiments, the first control device is configured to send the spot inspection trigger signal to the host computer in response to detecting a first spot inspection trigger operation.

[0036] In this way, the operator can flexibly trigger the first control device to send a spot inspection trigger signal through the first spot inspection trigger operation, thereby flexibly controlling the host computer to perform spot inspection on the weighing equipment.

[0037] In some embodiments, the host computer includes a second display interface, the second display interface includes a parameter configuration area, the parameter configuration area includes a first configuration sub-area and a second configuration sub-area, the first configuration sub-area is used to configure the weighing control parameters of the battery cell, and the second configuration sub-area is used to configure the inspection and control parameters of the weighing equipment; the host computer is used to obtain the configured preset weight range in response to the configuration operation of the weighing control parameters of the battery cell in the first configuration sub-area; and / or the host computer is used to obtain the configured preset verification conditions in response to the configuration operation of the inspection and control parameters in the second configuration sub-area.

[0038] In this way, operators can flexibly configure the weighing control parameters of the battery cells in the first configuration sub-area and / or configure the inspection control parameters of the battery cells in the second configuration sub-area according to actual conditions, thereby better meeting actual production needs.

[0039] In some embodiments, the first control device is used to send a reset trigger signal to the host computer in response to detecting that the battery cell leaves the weighing area of ​​the weighing device; the host computer is used to send a third weighing instruction to the weighing device in response to receiving the reset trigger signal; the weighing device is used to obtain the third weighing result of the current weighing in response to the third weighing instruction, and send the third weighing result to the host computer; the host computer is used to receive the third weighing result and send a reset instruction to the weighing device if the absolute value of the third weighing result does not exceed a preset weight threshold; the weighing device is used to perform a reset operation in response to the reset instruction.

[0040] In this way, after receiving the reset trigger signal, the host computer first sends a third weighing instruction to the weighing device, receives the third weighing result returned by the weighing device after weighing in response to the third weighing instruction, and then sends a reset instruction to the weighing device based on the third weighing instruction to cause the weighing device to perform the reset operation. In this way, since the third weighing result is obtained by the weighing device after the battery cell leaves the weighing area, it can reflect whether there is a foreign object in the weighing area of ​​the weighing device that affects the weighing data. Therefore, sending the reset instruction to the weighing device when the absolute value of the third weighing result does not exceed the preset weight threshold can make the sending of the reset instruction more accurate, thereby making the reset operation of the weighing device more accurate, and further improving the subsequent weighing accuracy of the weighing device.

[0041] In some embodiments, the host computer is used to send an alarm instruction to the first control device when the absolute value of the third weighing result exceeds the preset weight threshold; the first control device is used to output alarm information in response to the alarm instruction.

[0042] In this way, since the absolute value of the third weighing result exceeds the preset weight threshold, it indicates that there may be foreign objects in the weighing area of ​​the weighing equipment that affect the weighing data. By sending an alarm instruction to the first control device so that the first control device outputs an alarm message, the operator can discover the abnormality in time.

[0043] The present disclosure provides a method for injecting liquid into a battery cell and exiting the battery cell, which is applied to a host computer and includes:

[0044] In response to receiving a weighing trigger signal, sending a first weighing instruction to the weighing device; the weighing trigger signal is sent by the first control device to the host computer in response to detecting that the battery cell after injection enters the weighing area of ​​the weighing device;

[0045] receiving a first weighing result sent by the weighing device; the first weighing result is sent by the weighing device after weighing the battery cell in response to the first weighing instruction;

[0046] When the first weighing result is within a preset weight range, the battery cell injection data is obtained locally; wherein the battery cell injection data is collected and recorded locally by the host computer based on the position of the battery cell in the tray during the battery cell injection process and after the injection device completes the injection of the battery cell set placed in the tray;

[0047] Based on the injection data, a liquid injection outbound request for the battery cell is sent to a production execution system.

[0048] In the battery cell filling and shipping method of the disclosed embodiment, on the one hand, after the battery cells in the battery cell set placed on the tray are filled with liquid using the filling equipment, the upper computer can quickly and accurately collect and record the battery cell filling data to the upper computer based on the position of the battery cells in the tray; on the other hand, in response to detecting that the battery cell after filling enters the weighing area of ​​the weighing device, the first control device sends a weighing trigger signal to the upper computer, so that the upper computer can send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal, and receive the first weighing result sent by the weighing device after weighing the battery cell in response to the first weighing instruction. If the first weighing result is within a preset weight range, based on the battery cell filling data obtained locally, a filling and shipping request for the battery cell is sent to the production execution system. In this way, in the battery cell filling and shipping process in the tray-type filling scenario, the filling data can be quickly and reliably obtained and uploaded to the MES system, facilitating subsequent production data traceability.

[0049] In some embodiments, the method further comprises:

[0050] In response to receiving the data acquisition signal, based on the position of the battery cell in the tray, the injection data of the battery cell is collected from the second control device, and the injection data is stored locally; wherein, the injection data of the battery cell is obtained by the second control device during the battery cell injection process, and the data acquisition signal is sent to the host computer by the second control device after determining that the injection device has completed the injection of the battery cell.

[0051] In this way, after the second control device determines that the injection device has completed the injection of the battery cell, it can control the upper computer to timely collect the injection data of the battery cell and store it locally by sending a data acquisition signal to the upper computer, thereby reducing the probability of injection data loss due to abnormal conditions such as power failure of the second control device, and improving the reliability of injection data acquisition and the stability of the injection system operation.

[0052] In some embodiments, the method further comprises:

[0053] receiving an outbound request result returned by the production execution system in response to the liquid injection outbound request;

[0054] When the outbound request result indicates that the request is successful, an outbound control signal is sent to the first control device, so that the first control device controls the unloading module to transport the battery cell out of the liquid injection station in response to the outbound control signal.

[0055] In this way, when the outbound request result returned by the production execution system indicates that the request is successful, the host computer can simply and quickly notify the first control device through the outbound control signal, so that the first control device controls the unloading module to transport the battery cells out of the liquid filling station.

[0056] In some embodiments, the method further comprises:

[0057] In response to receiving a spot inspection trigger signal for the weighing device, sending a second weighing instruction to the weighing device;

[0058] receiving a second weighing result sent by the weighing device; wherein the second weighing result is sent by the weighing device after weighing a test weight pre-placed on the weighing device in response to the second weighing instruction;

[0059] Based on preset verification conditions, the second weighing result is verified to obtain the inspection result of the weighing equipment.

[0060] In this way, the degree of automation of the weighing equipment calibration process in the liquid injection system can be improved, and the impact of manual operation errors on the calibration results can be reduced, so that abnormalities of the weighing equipment can be discovered more promptly and the production quality of the battery cells can be improved.

[0061] In some embodiments, the method further comprises:

[0062] In a case where the spot inspection result is the first spot inspection result, the spot inspection result and / or the second weighing result is uploaded to the production execution system; the first spot inspection result indicates that the weighing device has passed the calibration.

[0063] In this way, when the inspection result of the weighing equipment is the first inspection result indicating that the weighing equipment has passed the calibration, the host computer can automatically upload the inspection result and / or the second weighing result to the production execution system, thereby facilitating the production execution system to perform production management based on the inspection result and / or the second weighing result of the weighing equipment, thereby further improving the production quality of the battery cells.

[0064] In some embodiments, the method further comprises:

[0065] In response to receiving a reset trigger signal, sending a third weighing instruction to the weighing device; the reset trigger signal is sent by the first control device in response to detecting that the battery cell has left the weighing area of ​​the weighing device;

[0066] receiving a third weighing result sent by the weighing device; wherein the third weighing result is obtained and sent by the weighing device after weighing in response to the third weighing instruction;

[0067] In a case where the absolute value of the third weighing result does not exceed a preset weight threshold, a reset instruction is sent to the weighing device, so that the weighing device performs a reset operation in response to the reset instruction.

[0068] In this way, after receiving the reset trigger signal, the host computer first sends a third weighing instruction to the weighing device, receives the third weighing result returned by the weighing device after weighing in response to the third weighing instruction, and then sends a reset instruction to the weighing device based on the third weighing instruction to cause the weighing device to perform the reset operation. In this way, since the third weighing result is obtained by the weighing device after the battery cell leaves the weighing area, it can reflect whether there is a foreign object in the weighing area of ​​the weighing device that affects the weighing data. Therefore, sending the reset instruction to the weighing device when the absolute value of the third weighing result does not exceed the preset weight threshold can make the sending of the reset instruction more accurate, thereby making the reset operation of the weighing device more accurate, and further improving the subsequent weighing accuracy of the weighing device.

[0069] 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

[0070] 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.

[0071] FIG1 is a schematic diagram of the structure of a liquid injection system according to an embodiment of the present disclosure;

[0072] FIG2 is a second schematic diagram of the structure of a liquid injection system provided in an embodiment of the present disclosure;

[0073] FIG3 is a third schematic diagram of the structure of a liquid injection system provided in an embodiment of the present disclosure;

[0074] FIG4 is a schematic diagram of a page layout of a first display interface provided by an embodiment of the present disclosure;

[0075] FIG5 is a second schematic diagram of a page layout of a first display interface provided by an embodiment of the present disclosure;

[0076] FIG6 is a fourth schematic diagram of the structure of a liquid injection system provided in an embodiment of the present disclosure;

[0077] FIG7 is a schematic diagram of a page layout of a second display interface provided by an embodiment of the present disclosure;

[0078] FIG8 is a schematic diagram of a process flow for implementing a method for injecting liquid into a battery cell and exiting the battery cell according to an embodiment of the present disclosure;

[0079] FIG9 is a schematic diagram of an implementation process of a remote weighing device inspection according to an embodiment of the present disclosure;

[0080] FIG10 is a schematic diagram of an implementation of a zeroing process of a weighing device provided by an embodiment of the present disclosure;

[0081] FIG11 is a schematic diagram of an implementation process of transferring injection data across logistics lines provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The following describes the embodiments of the present disclosure in detail.

[0087] 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.

[0088] 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.

[0089] The present disclosure provides a liquid injection system. As shown in FIG1 , the liquid injection system 100 includes a liquid injection device 110 , a host computer 120 , a first control device 130 , and a weighing device 140 .

[0090] The liquid injection device 110 is used to inject liquid into the battery cell assembly placed in the tray during the battery cell injection process;

[0091] The host computer 120 is configured to collect and record the injection data of the battery cells to a local computer based on the positions of the battery cells in the tray after the injection of the battery cells in the battery cell assembly is completed;

[0092] The first control device 130 is configured to send a weighing trigger signal to the host computer 120 in response to detecting that the battery cell after injection enters the weighing area of ​​the weighing device 140;

[0093] The host computer 120 is configured to send a first weighing instruction to the weighing device 140 in response to receiving a weighing trigger signal;

[0094] The weighing device 140 is used to weigh the battery cell in response to the first weighing instruction, obtain and send a first weighing result to the host computer 120;

[0095] The host computer 120 is used to obtain the liquid injection data of the battery cell from the local when the first weighing result is within the preset weight range, and send the liquid injection outbound request of the battery cell to the production execution system based on the liquid injection data.

[0096] 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.

[0097] In some embodiments, the injection device 110 can use a tray-type injection method to inject liquid into the battery cells. During implementation, the battery cells to be injected can be loaded onto a tray and brought into the injection device 110. The at least one injection pump in the injection device 110 then injects liquid into the battery cells placed at various locations on the tray. During implementation, the injection device 110 can be located at an injection station within the injection station.

[0098] The host computer 120 can be used to control the injection process. During implementation, the host computer 120 can be at least one of a server, a laptop, a tablet computer, a desktop computer, a smart phone, etc.

[0099] After the battery cells in the battery cell collection are filled with liquid, the upper computer 120 can collect the liquid filling data of the battery cells directly from the liquid filling equipment based on the position of the battery cells in the tray, or collect the liquid filling data of the battery cells from the second control device of the liquid filling station based on the position of the battery cells in the tray.

[0100] After all the battery cells in the battery cell set are filled with liquid, the host computer 120 can collect and record the liquid injection data of each battery cell locally based on the position of each battery cell in the tray. After a battery cell in the battery cell set is filled with liquid, the host computer 120 can also collect and record the liquid injection data of the battery cell locally based on the position of the battery cell in the tray immediately after the liquid injection of the battery cell is completed, without waiting for all the battery cells in the battery cell set to be filled with liquid. The liquid injection data of the battery cell may include the 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.

[0101] The first control device 130 may include a control device for the unloading area, configured to control the operation of various mechanisms in the unloading area. In practice, the first control device 130 may be, for example, an industrial computer or a programmable logic controller (PLC). In some embodiments, the first control device 130 is configured to control the operation of the weighing device 140, the conveying mechanism, and / or the unloading module in the unloading area. For example, the first control device 130 may be a PLC configured to control the operation of the weighing device 140.

[0102] Weighing device 140 can be used to weigh the battery cells after injection during the battery cell outflow process. For example, after the battery cells are injected, weighing device 140 can be used to weigh the battery cells to obtain their weight after injection. In practice, weighing device 140 can include, but is not limited to, at least one of a weighing scale and an electronic scale. Weighing device 140 can be located in the unloading area of ​​the injection station.

[0103] After the battery cells are injected with liquid, they can be transported manually and / or by any suitable transport mechanism to the weighing area of ​​the weighing device 140. Upon detecting that the injected battery cells have entered the weighing area of ​​the weighing device 140, the first control device 130 can send a weighing trigger signal to the host computer 120, so that the host computer 120 sends a first weighing instruction to the weighing device 140 in response to the weighing trigger signal. The weighing trigger signal can be any suitable signal for triggering the host computer 120 to send the first weighing instruction to the weighing device 140, and the first weighing instruction can be any suitable instruction for instructing the weighing device 140 to weigh the battery cells currently located in the weighing area, and the embodiments of the present disclosure are not limited thereto. In some embodiments, a weighing trigger signal point corresponding to the weighing device 140 can be set in advance in the first control device 130. The first control device 130 can send a weighing trigger signal to the host computer 120 by writing the weighing trigger signal point as a specific signal value. The host computer 120 can determine that the weighing trigger signal is received when the value of the weighing trigger signal point is read as the specific signal value.

[0104] The preset weight range can be used to control the weight of the battery cell after injection. It is understood that if the first weighing result is within the preset weight range, it can be determined that the weight of the battery cell after injection meets the production process requirements; if the first weighing result is not within the preset weight range, it can be determined that the weight of the battery cell after injection does not meet the production process requirements. In practice, the preset weight range can be determined based on the production process requirements of the battery cell, and the embodiments of the present disclosure are not limited to this.

[0105] When the first weighing result is within the preset weight range, the host computer 120 can use any appropriate method to obtain the liquid injection data of the battery cell from the local area, and send the liquid injection outbound request of the battery cell to the production execution system based on the liquid injection data. It can be understood that the liquid injection outbound request of the battery cell includes the liquid injection data of the battery cell. By sending the liquid injection outbound request of the battery cell to the production execution system, the liquid injection data of the battery cell can be uploaded to the production execution system, and the production execution system can return the outbound request result based on the liquid injection data of the battery cell. If the battery cell meets the outbound conditions, the production execution system can return an outbound request result indicating that the request is successful; if the battery cell does not meet the outbound conditions, the production execution system can return an outbound request result indicating that the request failed.

[0106] In some embodiments, the host computer 120 may use the battery cell's identification information as an index to record the battery cell's injection data locally on the host computer 120. If the first weighing result of the battery cell is within a preset weight range, the host computer 120 may retrieve the battery cell's injection data locally based on the battery cell's identification information. The battery cell's identification information may include, but is not limited to, at least one of a battery cell code, a tray code of the tray carrying the battery cell, and the battery cell's location on the tray.

[0107] In some embodiments, after receiving the weighing trigger signal, the host computer 120 may control the code scanning device to scan the identification code of the battery cell to obtain the identification information of the battery cell.

[0108] In some embodiments, after receiving the weighing trigger signal, the host computer 120 may obtain the identification information of the battery cell input by the operator through the human-computer interaction interface.

[0109] In the liquid injection system of the embodiment of the present disclosure, on the one hand, after the liquid injection of the battery cells in the battery cell set placed on the tray is completed by using the liquid injection device, the upper computer can quickly and accurately collect and record the liquid injection data of the battery cells to the upper computer locally based on the position of the battery cells in the tray; on the other hand, the first control device sends a weighing trigger signal to the upper computer in response to detecting that the battery cells after liquid injection enter the weighing area of ​​the weighing device, so that the upper computer can send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal, and receive the first weighing result sent by the weighing device after weighing the battery cell in response to the first weighing instruction. When the first weighing result is within the preset weight range, based on the liquid injection data of the battery cell obtained locally, a liquid injection outbound request for the battery cell is sent to the production execution system. In this way, in the battery cell liquid injection outbound process in the tray-type liquid injection scenario, the liquid injection data can be quickly and reliably obtained and uploaded to the MES system, facilitating subsequent production data traceability.

[0110] In some embodiments, referring to FIG2 , the liquid injection system 100 further includes a second control device 150. The second control device 150 is configured to obtain liquid injection data of the battery cell during the liquid injection process, and send a data acquisition signal to the host computer 120 after determining that the liquid injection device 110 has completed the liquid injection of the battery cell;

[0111] The host computer 120 is configured to collect the liquid injection data of the battery cells from the second control device 150 based on the positions of the battery cells in the tray in response to receiving the data acquisition signal, and store the liquid injection data locally.

[0112] The second control device 150 may include a control device for the liquid injection station, which is used to control the operation process of each mechanism of the liquid injection station. During implementation, the second control device 150 may be, for example, an industrial computer, a PLC, etc. In some embodiments, the second control device 150 is used to control the operation process of the liquid injection device 110. For example, the second control device 150 may be a PLC for controlling the operation process of the liquid injection device 110. It should be noted that the first control device 130 and the second control device 150 can be implemented as the same control device, or as two different control devices, and the embodiments of the present disclosure are not limited to this.

[0113] In some embodiments, the second control device 150 can obtain the battery cell's injection data during the battery cell injection process and store the battery cell's injection data using the battery cell's position in the tray as an index. After receiving the data acquisition signal, the host computer 120 can obtain the battery cell's injection data corresponding to the battery cell's position in the tray from the second control device 150 based on the battery cell's position in the tray.

[0114] In some embodiments, the second control device 150 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 as an index. The host computer 120 can pre-store the correspondence between the position of each battery cell placed in the 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 second control device 150.

[0115] In this way, after the second control device determines that the injection device has completed the injection of the battery cell, it can control the upper computer to timely collect the injection data of the battery cell and store it locally by sending a data acquisition signal to the upper computer, thereby reducing the probability of injection data loss due to abnormal conditions such as power failure of the second control device, and improving the reliability of injection data acquisition and the stability of the injection system operation.

[0116] In some embodiments, the injection system 100 further includes a blanking module;

[0117] The host computer 120 is configured to receive an outbound request result returned by the production execution system in response to the injection outbound request, and send an outbound control signal to the first control device 130 if the outbound request result indicates that the request is successful;

[0118] The first control device 130 is used to control the unloading module to transport the battery cells out of the injection station in response to the outbound control signal.

[0119] In this way, when the outbound request result returned by the production execution system indicates that the request is successful, the host computer can simply and quickly notify the first control device through the outbound control signal, so that the first control device controls the unloading module to transport the battery cells out of the liquid filling station.

[0120] In some embodiments, the host computer 120 is configured to write the first weighing result value to the weighing result point corresponding to the weighing device 140 in the first control device 130 when the first weighing result is not within a preset weight range;

[0121] And / or, the host computer 120 is configured to write a second weighing result value to the weighing result point when the outbound request result representation request fails.

[0122] The first weighing result value and the second weighing result value can be any appropriate values ​​pre-set according to actual circumstances, and the present disclosure does not limit this. The first control device 130 can determine that the first weighing result of the battery cell is not within the preset weight range when the value of the weighing result point corresponding to the weighing device 140 is the first weighing result value; and can determine that the first weighing result of the battery cell is within the preset weight range when the value of the weighing result point corresponding to the weighing device 140 is the second weighing result value.

[0123] In this way, for different first weighing results, corresponding weighing result values ​​can be written to the weighing result points corresponding to the weighing device in the first control device, thereby facilitating the first control device to perform corresponding control operations based on the weighing result values ​​written in the weighing result points.

[0124] In some embodiments, the host computer 120 is configured to determine whether the first weighing result is within a preset weight range when it is determined that the weighing device 140 has successfully weighed the weight according to the first weighing result;

[0125] And / or, the host computer 120 is configured to write a third weighing result value into the weighing result point when it is determined that the weighing device 140 has failed weighing according to the first weighing result.

[0126] The third weighing result value can be any appropriate value pre-set according to actual conditions, and the present disclosure is not limited thereto. The first control device 130 can determine that the weighing device 140 has failed weighing when the value of the weighing result point corresponding to the weighing device 140 read is the third weighing result value.

[0127] In this way, on the one hand, if the weighing device successfully weighs, then determining whether the first weighing result is within the preset weight range can reduce misjudgments due to weighing failures and improve the accuracy of the judgment results. On the other hand, if the weighing device fails to weigh, writing the third weighing result value to the weighing result point can facilitate the first control device to know that the weighing device has failed based on the third weighing result value, thereby facilitating the first control device to perform subsequent exception processing.

[0128] In some embodiments, the host computer 120 is configured to send a second weighing instruction to the weighing device 140 in response to receiving a spot check trigger signal for the weighing device 140 ;

[0129] The weighing device 140 is configured to weigh the calibration weight pre-placed on the weighing device 140 in response to the second weighing instruction, and obtain and send a second weighing result to the host computer 120;

[0130] The host computer 120 is configured to receive the second weighing result and verify the second weighing result based on a preset verification condition to obtain a spot inspection result of the weighing device 140 .

[0131] When a spot inspection of the weighing device 140 in the liquid injection system 100 is required, a spot inspection trigger signal for the weighing device 140 can be sent to the host computer 120 in any suitable manner. In some embodiments, the first control device 130 in the liquid injection system 100 can automatically send a spot inspection trigger signal for the weighing device 140 to the host computer 120 each time it receives a start-of-shift trigger signal. In some embodiments, an operator can perform a spot inspection trigger operation through the first display interface of the host computer 120 and / or the control panel of the first control device 130 to send the spot inspection trigger signal to the host computer 120.

[0132] After receiving the inspection trigger signal, the host computer 120 may send a second weighing instruction to the weighing device 140. This second weighing instruction may be used to instruct the weighing device 140 to weigh a test weight placed in a weighing area of ​​the weighing device 140. The test weight may have been placed in the weighing area before weighing. In response to receiving the second weighing instruction, the weighing device 140 may weigh the test weight and send a second weighing result to the host computer 120.

[0133] The preset verification condition can be set in advance based on actual conditions and is used to verify the weighing result of the weighing device 140 to determine whether the weighing accuracy of the weighing device 140 meets the process requirements. After receiving the second weighing result, the host computer 120 can verify the second weighing result based on the preset verification condition to obtain the inspection result of the weighing device 140. In some embodiments, if the second weighing result meets the preset verification condition, the inspection result of the weighing device 140 can be determined as the first inspection result indicating that the weighing device 140 has passed the verification; if the second weighing result does not meet the preset verification condition, the inspection result of the weighing device 140 can be determined as the second inspection result indicating that the weighing device 140 has failed the verification.

[0134] In this way, the degree of automation of the weighing equipment calibration process in the liquid injection system can be improved, and the impact of manual operation errors on the calibration results can be reduced, so that abnormalities of the weighing equipment can be discovered more promptly and the production quality of the battery cells can be improved.

[0135] In some embodiments, the preset verification condition includes a preset error range.

[0136] The host computer 120 is configured to determine, when an error between the second weighing result and the reference weight of the calibration weight is within a preset error range, that the inspection result of the weighing device 140 is a first inspection result; the first inspection result indicates that the weighing device 140 has passed the calibration;

[0137] And / or, the host computer 120 is used to determine that the inspection result of the weighing device 140 is a second inspection result when the error between the second weighing result and the reference weight exceeds a preset error range; the second inspection result indicates that the weighing device 140 fails the verification.

[0138] Here, the reference weight of the calibration weight is a predetermined standard weight of the calibration weight. The preset error range can be pre-set based on production process requirements, and the present disclosure is not limited to this. For example, the reference weight of the calibration weight can be 2 kilograms, and the inspection error range can be no more than 0.1 grams.

[0139] In this way, by comparing whether the error between the first weighing result and the reference weight is within a preset error range, it can be simply and quickly determined whether the weighing device has passed the calibration.

[0140] In some embodiments, the host computer 120 is configured to write the first spot inspection result value to the spot inspection result point corresponding to the weighing device 140 in the first control device 130 when determining that the spot inspection result of the weighing device 140 is the first spot inspection result;

[0141] And / or, the host computer 120 is configured to write the second spot inspection result value into the spot inspection result point when determining that the spot inspection result of the weighing device 140 is the second spot inspection result.

[0142] The first spot inspection result value and the second spot inspection result value can be any appropriate values ​​pre-set according to actual circumstances, and are not limited in this regard in the presently disclosed embodiments. The first control device 130 can determine that the weighing device 140 has passed verification if the value of the spot inspection result point corresponding to the weighing device 140 reads is the first spot inspection result value; and can determine that the weighing device 140 has failed verification if the value of the spot inspection result point corresponding to the weighing device 140 reads is the second spot inspection result value.

[0143] In this way, for different first inspection results, corresponding weighing result values ​​can be written to the inspection result points corresponding to the weighing equipment in the first control device, so that the first control device can perform corresponding control operations based on the inspection result values ​​written in the inspection result points.

[0144] In some embodiments, the host computer 120 is configured to upload the spot inspection result and / or the second weighing result to the production execution system when the spot inspection result is the first spot inspection result.

[0145] The production execution system may record the received spot inspection result and / or the second weighing result.

[0146] In this way, when the inspection result of the weighing equipment is the first inspection result indicating that the weighing equipment has passed the calibration, the host computer can automatically upload the inspection result and / or the second weighing result to the production execution system, thereby facilitating the production execution system to perform production management based on the inspection result and / or the second weighing result of the weighing equipment, thereby further improving the production quality of the battery cells.

[0147] In some embodiments, as shown in FIG3 , the host computer 120 includes a first display interface 121 , which includes an inspection operation area and a result upload area;

[0148] The host computer 120 is configured to display a first spot inspection trigger control corresponding to the weighing device 140 in the spot inspection operation area, and receive a spot inspection trigger signal in response to a trigger operation on the first spot inspection trigger control;

[0149] And / or, the host computer 120 is used to display the result upload control in an operable manner in the result upload area when the inspection result is the first inspection result, and upload the inspection result and / or the second weighing result to the production execution system in response to the triggering operation of the result upload control.

[0150] Referring to Figure 4, the first display interface 121 includes an inspection operation area 1211 and a result upload area 1212. The host computer can display the first inspection trigger control 121a corresponding to the weighing device 140 in the inspection operation area 1211; the operator can perform a trigger operation on the first inspection trigger control 121a, so that the host computer 120 receives the inspection trigger signal, thereby triggering the inspection process of the weighing device 140.

[0151] In this way, the operator can flexibly control the host computer to receive the spot inspection trigger signal by triggering the first spot inspection trigger control corresponding to the weighing device, thereby flexibly controlling the host computer to perform spot inspection on the weighing device.

[0152] Continuing with FIG4 , when the inspection result of the weighing device 140 is the first inspection result, the host computer can display the result upload control 121b in an operable manner in the result upload area 1212, and the operator can trigger the result upload control 121b to upload the inspection result and / or the second weighing result of the weighing device 140 to the production execution system. It is understandable that because the host computer displays the result upload control in an operable manner in the result upload area when the inspection result of the weighing device is the first inspection result indicating that the weighing device has passed verification, the operator can use the upload control to upload the inspection result and / or the second weighing result to the production execution system only when the weighing device has passed verification, thereby reducing the impact of manual operation errors on production management.

[0153] In some embodiments, the host computer 120 may display the result upload control 121b in the result upload area 1212 in an inoperable manner in advance, and when it is determined that the inspection result is the first inspection result, adjust the display mode of the result upload control 121b in the result upload area 1212 to an operable manner.

[0154] In some implementations, the host computer 120 may not display the result upload control 121b in the result upload area 1212 in advance, but may display the result upload control 121b in an operable manner in the result upload area 1212 when the inspection result is determined to be the first inspection result.

[0155] In some embodiments, there may be multiple weighing devices 140 in the liquid injection system, see Figure 5. When the inspection results of multiple weighing devices 140 are all first inspection results indicating that the weighing devices have passed the calibration, the host computer 120 can display the batch result upload control 121c in an operable manner in the result upload area 1212; the operator can upload the inspection results and / or the second weighing results of each weighing result to the production execution system by triggering the batch result upload control 121c.

[0156] In some embodiments, the first control device 130 is configured to send a spot check trigger signal to the host computer 120 in response to detecting the first spot check trigger operation.

[0157] The first spot inspection triggering operation may be any suitable operation performed by the operator on the first control device 130 to trigger the spot inspection process of the weighing device 140 , and the embodiment of the present disclosure is not limited thereto.

[0158] In some embodiments, the first control device 130 may include a control panel, which may include a second spot inspection trigger control corresponding to the weighing device 140. The first spot inspection trigger operation may include a click operation on the second spot inspection trigger control. The operator may trigger the first control device 130 to send a spot inspection trigger signal to the host computer 120 by triggering the second spot inspection trigger control. During implementation, a spot inspection trigger signal point corresponding to the weighing device 140 may be pre-set. The first control device 130 may send the spot inspection trigger signal by setting the spot inspection trigger signal point to a first signal value (e.g., True). The host computer 120 may read the signal value of the spot inspection trigger signal point, and when the signal value of the spot inspection trigger signal point is the first signal value, determine that the spot inspection trigger signal is received and send the second weighing instruction to the weighing device 140.

[0159] In this way, the operator can flexibly trigger the first control device to send a spot inspection trigger signal through the first spot inspection trigger operation, thereby flexibly controlling the host computer to perform spot inspection on the weighing equipment.

[0160] In some embodiments, referring to FIG6 , the host computer 120 includes a second display interface 122 , the second display interface 122 includes a parameter configuration area, the parameter configuration area includes a first configuration sub-area and a second configuration sub-area, the first configuration sub-area is used to configure the weighing control parameters of the battery cell, and the second configuration sub-area is used to configure the inspection and control parameters of the weighing equipment 140 .

[0161] The host computer 120 is configured to obtain a configured preset weight range in response to a configuration operation performed on the weighing control parameters of the battery cell in the first configuration sub-area;

[0162] And / or, the host computer 120 is configured to obtain a preset verification condition of the configuration in response to a configuration operation performed on the inspection and control parameters in the second configuration sub-area.

[0163] The cell weighing control parameter may include a preset weight range for controlling the first weighing result of the cell after injection. In some embodiments, the preset weight range may include an upper weight limit and / or a lower weight limit of the cell after injection corresponding to the product model of the current cell.

[0164] The spot inspection control parameters may include preset verification conditions for controlling the second weighing result obtained during the spot inspection process of the weighing device 140. In some embodiments, the preset verification conditions include a preset error range and / or a reference weight of the verification weight.

[0165] For example, referring to Figure 7, the second display interface 122 includes a parameter configuration area 1221, and the parameter configuration area 1221 includes a first configuration sub-area 122a and a second configuration sub-area 122b. The first configuration sub-area 122a may include a first configuration control a1 for configuring the upper limit of the weight of the battery cell after filling, and a second configuration control a2 for configuring the lower limit of the weight of the battery cell after filling. The second configuration sub-area 122b may include a third configuration control b1 for configuring a preset error range, and a fourth configuration control b2 for configuring the reference weight of the calibration weight.

[0166] In this way, operators can flexibly configure the weighing control parameters of the battery cells in the first configuration sub-area and / or configure the inspection control parameters of the battery cells in the second configuration sub-area according to actual conditions, thereby better meeting actual production needs.

[0167] In some embodiments, the first control device 130 is configured to send a reset trigger signal to the host computer 120 in response to detecting that the battery cell leaves the weighing area of ​​the weighing device 140 ;

[0168] The host computer 120 is configured to send a third weighing instruction to the weighing device 140 in response to receiving the reset trigger signal;

[0169] The weighing device 140 is configured to obtain a third weighing result of the current weighing in response to the third weighing instruction, and send the third weighing result to the host computer 120;

[0170] The host computer 120 is configured to receive the third weighing result and, if the absolute value of the third weighing result does not exceed a preset weight threshold, send a reset instruction to the weighing device 140;

[0171] The weighing device 140 is configured to execute a zeroing operation in response to a zeroing instruction.

[0172] It can be understood that after the weighing device 140 completes weighing the battery cell, the battery cell can be transported away from the weighing device 140 through the conveyor line, and before the weighing device 140 is used to weigh the next battery cell, the weighing device 140 can be controlled to perform a zeroing operation to prepare for the weighing of the next battery cell.

[0173] In some embodiments, a reset trigger signal point corresponding to the weighing device 140 can be pre-set, and the first control device 130 can send a reset trigger signal by setting the reset trigger signal point to a second signal value (e.g., True). The host computer 120 can read the signal value of the reset trigger signal point, and when the signal value of the reset trigger signal point is the second signal value, it determines that the reset trigger signal has been received and sends a third weighing instruction to the weighing device 140; the weighing device 140 can obtain a third weighing result of the current weighing after receiving the third weighing instruction. It is understandable that when the weighing device 140 receives the third weighing instruction, the battery cell has left the weighing area of ​​the weighing device 140, that is, in this case, the weighing device 140 should be in an unloaded state, and thus the third weighing result should be the weighing result of the weighing device 140 in the unloaded state.

[0174] However, since the weighing area of ​​the weighing device 140 may contain foreign matter, affecting the accuracy of the weighing results of the weighing device 140, and if the weighing device 140 is reset when there is a foreign matter in the weighing area, it may cause the weighing data of subsequent battery cells to continue to be abnormal, ultimately resulting in batch product defects. Therefore, after the weighing device 140 sends the third weighing result to the host computer 120, the host computer 120 can determine whether the third weighing result meets the expected weighing result under the no-load state by determining whether the absolute value of the third weighing result exceeds a preset weight threshold, thereby determining whether there is a foreign matter in the weighing area of ​​the weighing device 140. If the absolute value of the third weighing result does not exceed the preset weight threshold, the host computer 120 sends a reset instruction to the weighing device 140 to control the weighing device 140 to perform the reset operation.

[0175] During implementation, the preset weight threshold may be any appropriate value set by those skilled in the art according to actual production process requirements, and the embodiments of the present disclosure are not limited thereto.

[0176] In this way, after receiving the reset trigger signal, the host computer first sends a third weighing instruction to the weighing device, receives the third weighing result returned by the weighing device after weighing in response to the third weighing instruction, and then sends a reset instruction to the weighing device based on the third weighing instruction to cause the weighing device to perform the reset operation. In this way, since the third weighing result is obtained by the weighing device after the battery cell leaves the weighing area, it can reflect whether there is a foreign object in the weighing area of ​​the weighing device that affects the weighing data. Therefore, sending the reset instruction to the weighing device when the absolute value of the third weighing result does not exceed the preset weight threshold can make the sending of the reset instruction more accurate, thereby making the reset operation of the weighing device more accurate, and further improving the subsequent weighing accuracy of the weighing device.

[0177] In some embodiments, the host computer 120 is configured to send an alarm instruction to the first control device 130 when the absolute value of the third weighing result exceeds a preset weight threshold;

[0178] The first control device 130 is configured to output alarm information in response to the alarm instruction.

[0179] In this way, since the absolute value of the third weighing result exceeds the preset weight threshold, it indicates that there may be foreign objects in the weighing area of ​​the weighing equipment that affect the weighing data. By sending an alarm instruction to the first control device so that the first control device outputs an alarm message, the operator can discover the abnormality in time.

[0180] The present disclosure provides a method for injecting liquid into a battery cell and then exiting the station. The method can be executed by a host computer. FIG8 is a schematic diagram of the implementation process of the method for injecting liquid into a battery cell and then exiting the station according to the present disclosure. As shown in FIG8 , the method can include the following steps S101 to S104:

[0181] Step S101, in response to receiving a weighing trigger signal, sending a first weighing instruction to the weighing device; the weighing trigger signal is sent to the host computer by the first control device in response to detecting that the battery cell after injection enters the weighing area of ​​the weighing device.

[0182] Step S102 , receiving a first weighing result sent by the weighing device; the first weighing result is sent by the weighing device after weighing the battery cell in response to the first weighing instruction.

[0183] Step S103, when the first weighing result is within a preset weight range, obtaining the injection data of the battery cell from the local; wherein, the injection data of the battery cell is collected and recorded locally by the host computer based on the position of the battery cell in the tray during the battery cell injection process and after the injection equipment completes the injection of the battery cell set placed in the tray.

[0184] Step S104: Based on the liquid injection data, a liquid injection outbound request for the battery cell is sent to a production execution system.

[0185] In the method for liquid injection and outbound delivery of battery cells in the embodiment of the present disclosure, on the one hand, after the liquid injection of the battery cells in the battery cell set placed in the tray is completed by using the liquid injection equipment, the upper computer can quickly and accurately collect and record the liquid injection data of the battery cells to the upper computer locally based on the position of the battery cells in the tray; on the other hand, the first control device sends a weighing trigger signal to the upper computer in response to detecting that the battery cells after liquid injection enter the weighing area of ​​the weighing device, so that the upper computer can send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal, and receive the first weighing result sent by the weighing device after weighing the battery cell in response to the first weighing instruction. When the first weighing result is within the preset weight range, based on the liquid injection data of the battery cell obtained locally, a liquid injection outbound request for the battery cell is sent to the production execution system. In this way, in the battery cell liquid injection outbound process in the tray-type liquid injection scenario, the liquid injection data can be quickly and reliably obtained and uploaded to the MES system, facilitating subsequent production data traceability.

[0186] In some embodiments, the above method may further include the following step S201:

[0187] Step S201, in response to receiving a data acquisition signal, based on the position of the battery cell in the tray, collect the injection data of the battery cell from the second control device, and store the injection data locally; wherein, the injection data of the battery cell is obtained by the second control device during the battery cell injection process, and the data acquisition signal is sent to the host computer by the second control device after determining that the injection device has completed the injection of the battery cell.

[0188] In this way, after the second control device determines that the injection device has completed the injection of the battery cell, it can control the upper computer to timely collect the injection data of the battery cell and store it locally by sending a data acquisition signal to the upper computer, thereby reducing the probability of injection data loss due to abnormal conditions such as power failure of the second control device, and improving the reliability of injection data acquisition and the stability of the injection system operation.

[0189] In some embodiments, the above method may further include the following steps S301 to S302:

[0190] Step S301, receiving an outbound request result returned by the production execution system in response to the liquid injection outbound request;

[0191] Step S302 : When the outbound request result indicates that the request is successful, an outbound control signal is sent to the first control device, so that the first control device controls the unloading module to transport the battery cell out of the liquid injection station in response to the outbound control signal.

[0192] In this way, when the outbound request result returned by the production execution system indicates that the request is successful, the host computer can simply and quickly notify the first control device through the outbound control signal, so that the first control device controls the unloading module to transport the battery cells out of the liquid filling station.

[0193] In some embodiments, the above method may further include the following steps S401 to S403:

[0194] Step S401, in response to receiving a spot inspection trigger signal for the weighing device, sending a second weighing instruction to the weighing device;

[0195] Step S402: receiving a second weighing result sent by the weighing device; wherein the second weighing result is sent by the weighing device after weighing a test weight pre-placed on the weighing device in response to the second weighing instruction;

[0196] Step S403: Verify the second weighing result based on preset verification conditions to obtain a spot inspection result of the weighing device.

[0197] In this way, the degree of automation of the weighing equipment calibration process in the liquid injection system can be improved, and the impact of manual operation errors on the calibration results can be reduced, so that abnormalities of the weighing equipment can be discovered more promptly and the production quality of the battery cells can be improved.

[0198] In some embodiments, the above method may further include the following step S501:

[0199] Step S501 : if the spot inspection result is a first spot inspection result, uploading the spot inspection result and / or the second weighing result to the production execution system; the first spot inspection result indicates that the weighing device has passed the calibration.

[0200] In this way, when the inspection result of the weighing equipment is the first inspection result indicating that the weighing equipment has passed the calibration, the host computer can automatically upload the inspection result and / or the second weighing result to the production execution system, thereby facilitating the production execution system to perform production management based on the inspection result and / or the second weighing result of the weighing equipment, thereby further improving the production quality of the battery cells.

[0201] In some embodiments, the method further includes the following steps S601 to S603:

[0202] Step S601: In response to receiving a reset trigger signal, sending a third weighing instruction to the weighing device; the reset trigger signal is sent by the first control device in response to detecting that the battery cell has left the weighing area of ​​the weighing device;

[0203] Step S602: receiving a third weighing result sent by the weighing device; wherein the third weighing result is obtained and sent by the weighing device after weighing in response to the third weighing instruction;

[0204] Step S603: When the absolute value of the third weighing result does not exceed a preset weight threshold, a reset instruction is sent to the weighing device, so that the weighing device performs a reset operation in response to the reset instruction.

[0205] In this way, after receiving the reset trigger signal, the host computer first sends a third weighing instruction to the weighing device, receives the third weighing result returned by the weighing device after weighing in response to the third weighing instruction, and then sends a reset instruction to the weighing device based on the third weighing instruction to cause the weighing device to perform the reset operation. In this way, since the third weighing result is obtained by the weighing device after the battery cell leaves the weighing area, it can reflect whether there is a foreign object in the weighing area of ​​the weighing device that affects the weighing data. Therefore, sending the reset instruction to the weighing device when the absolute value of the third weighing result does not exceed the preset weight threshold can make the sending of the reset instruction more accurate, thereby making the reset operation of the weighing device more accurate, and further improving the subsequent weighing accuracy of the weighing device.

[0206] The following takes the battery cell exit scenario in the battery cell secondary liquid injection process as an example to illustrate the battery cell liquid injection and exit method provided by the embodiment of the present disclosure.

[0207] 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 liquid injection. After the liquid injection is completed, the battery cell is also weighed and discharged (i.e., unloaded) in a multi-channel manner. During the battery cell discharge process, the upper computer of the liquid injection system will collect the liquid injection data of the battery cell cached by the PLC according to the liquid injection channel, and upload the collected liquid injection data of the battery cell to the MES system for subsequent liquid injection data tracing. After the liquid injection data of the battery cell is uploaded, the battery cell will be moved from the weighing area of ​​the weighing equipment by the conveyor belt to the equipment of the next process; after the battery cell leaves the weighing area of ​​the weighing equipment, the weighing equipment can be reset to avoid interference with the weighing data of the next battery cell and causing errors. In addition, each shift requires an accuracy check of the weighing equipment. This is usually done manually by placing standard weights on the weighing area of ​​the weighing equipment, and then manually uploading the weighing results to the MES system. If the check result shows that the weighing error of the weighing equipment is outside the error range, the weighing equipment needs to be readjusted. If the check result shows that the weighing error of the weighing equipment is within the error range, production for that shift can begin.

[0208] However, in the related art, there are at least the following problems in the process of battery cell exiting the secondary liquid injection process:

[0209] 1) It is not applicable to the outbound process of the secondary liquid filling process using the tray-type liquid filling method. In the secondary liquid filling process using the tray-type liquid filling method, there are other logistics lines between the liquid filling station where the liquid filling equipment is located and the unloading area where the weighing equipment is located. These other logistics lines may come from different suppliers. As a result, data cannot be transferred between the control equipment of the liquid filling station and the control equipment of the unloading area. This will cause the control equipment in the unloading area to be unable to obtain the liquid filling data of the battery cell, and thus the liquid filling data of the battery cell cannot be uploaded to the MES system for data traceability during the outbound process of the battery cell.

[0210] 2) When the injection system starts working, the weighing equipment needs to be calibrated for accuracy. However, this process requires manual entry into the weighing equipment to manually place the weights, manually record the weighing results, and then upload the weighing results to the MES system. Manually recording the weighing results is prone to recording errors, which will prolong the accuracy verification time and bring certain safety hazards.

[0211] 3) During the weighing process of the battery cells after injection, if there is foreign matter on the weighing equipment, the weighing results of the battery cells will be inaccurate. Since the zeroing process of the weighing equipment cannot eliminate the foreign matter, a continuous abnormal state will remain undetected, causing batch quality problems.

[0212] Based on this, the disclosed embodiments provide a method for battery cell liquid injection and shipping, which includes the following three processes: remote weighing equipment inspection, weighing equipment zeroing, and cross-logistics line liquid injection data transfer. The remote weighing equipment inspection eliminates the need for manual weighing accuracy verification, enabling remote accuracy verification and data upload. The zeroing process can also mitigate quality issues with battery cells in batches caused by foreign matter on the weighing equipment.

[0213] FIG9 is a schematic diagram of a remote weighing device spot check process provided by an embodiment of the present disclosure. As shown in FIG9 , the remote weighing device accuracy check process in the embodiment of the present disclosure includes the following steps S201 to S209:

[0214] Step S201: After the host computer software is initialized and the connection between the PLC and the weighing equipment in the unloading area is successful, the inspection process of the weighing equipment is started;

[0215] Here, the PLC is the control device of the unloading area (corresponding to the aforementioned first control device), which is used to control the operation process of the weighing equipment, conveying mechanism and / or unloading module in the unloading area.

[0216] In step S202 , the PLC sets the signal value of the spot inspection trigger signal point to True in response to a click operation on the second spot inspection trigger control on the control panel.

[0217] In some embodiments, the control panel can be a touch screen in the unloading area. The operator can place the calibration weights in the weighing area of ​​the weighing device in advance, and then trigger the inspection process of the weighing device by clicking the second inspection trigger control corresponding to the weighing device to be inspected on the touch screen.

[0218] Step S203: The host computer reads the signal value of the inspection trigger signal point corresponding to the weighing device;

[0219] Step S204: When the host computer reads the signal value of the inspection trigger signal point as True, it sends a second weighing instruction to the weighing device;

[0220] Step S205: The weighing device weighs the test weight pre-placed on the weighing device in response to the second weighing instruction, obtains and returns a second weighing result to the host computer;

[0221] Step S206: The host computer determines whether the error between the second weighing result and the reference weight of the calibration weight is within a preset error range;

[0222] If the host computer determines that the error is within the preset error range, the process proceeds to step S207 ; if the host computer determines that the error is not within the preset error range, the process proceeds to step S208 .

[0223] In some embodiments, the host computer may also directly determine whether the second weighing result is within a target weight range. The target weight range may be determined based on a reference weight of the calibration weight and a preset error range. If the host computer determines that the second weighing result is within the target weight range, the process proceeds to step S207. If the host computer determines that the second weighing result is not within the target weight range, the process proceeds to step S208.

[0224] Step S207: The host computer writes the first spot inspection result value to the spot inspection result point corresponding to the weighing device in the PLC;

[0225] The first spot inspection result value may indicate that the weighing device has passed the calibration and has no accuracy issues.

[0226] Step S208: The host computer writes the second spot inspection result value to the spot inspection result point corresponding to the weighing device in the PLC;

[0227] Among them, the second inspection result value may indicate that the weighing equipment has failed the calibration and there is an accuracy problem. In this case, the PLC may output an alarm message to prompt the operator to re-debug the weighing equipment.

[0228] Step S209: Determine whether the inspection result point corresponding to the weighing device has returned to 0.

[0229] Here, the PLC can reset the value of the inspection result point to 0 before the next inspection process of the weighing device. If it is determined that the inspection result point corresponding to the weighing device has been reset to 0, the current inspection process is terminated.

[0230] Through the remote weighing equipment inspection process provided by the embodiment of the present disclosure, automatic calibration of the weighing equipment accuracy and automatic uploading of the calibration results can be achieved, reducing quality problems caused by manual operation errors.

[0231] FIG10 is a schematic diagram of a weighing device zeroing process according to an embodiment of the present disclosure. As shown in FIG10 , the weighing device zeroing process includes the following steps S301 to S313:

[0232] Step S301: The host computer software is initialized, and the connection between the PLC and the weighing equipment in the unloading area is successful, and the reset process of the weighing equipment is started;

[0233] In step S302 , in response to detecting that the battery cell has left the weighing area of ​​the weighing device, the PLC sets the signal value of the reset trigger signal point corresponding to the weighing device to True.

[0234] Step S303: The host computer reads the signal value of the reset trigger signal point corresponding to the weighing device;

[0235] Step S304: When the host computer reads the signal value of the reset trigger signal point as True, it sends a third weighing instruction to the weighing device;

[0236] Step S305: The weighing device responds to the third weighing instruction, obtains a third weighing result of the current weighing, and sends the third weighing result to the host computer;

[0237] Step S306: The host computer determines whether the absolute value of the third weighing result does not exceed a preset weight threshold;

[0238] If the host computer determines that the absolute value of the third weighing result does not exceed the preset weight threshold, the process proceeds to step S307 ; if the host computer determines that the absolute value of the third weighing result exceeds the preset weight threshold, the process proceeds to step S308 .

[0239] Step S307: The host computer sends a reset instruction to the weighing device;

[0240] Step S308: The host computer writes the first reset result value to the weighing reset result point corresponding to the weighing device in the PLC;

[0241] Among them, the first clear result value can indicate that there are foreign objects in the weighing area of ​​the weighing device, affecting the weighing result. In this case, the PLC can output an alarm message to prompt the operator to check and clean the foreign objects.

[0242] Step S309: The weighing device responds to the reset instruction, performs a reset operation, and returns the reset result to the host computer.

[0243] Step S310: The host computer determines whether the clearing operation is successful based on the clearing result;

[0244] If the clearing operation is successful, go to step S311; if the clearing operation is unsuccessful, go to step S312.

[0245] Step S311: The host computer writes the second reset result value to the weighing reset result point corresponding to the weighing device;

[0246] The second reset result value may indicate that the weighing device is reset successfully.

[0247] Step S312: The host computer writes the third reset result value to the weighing reset result point corresponding to the weighing device;

[0248] The third reset result value may indicate that the weighing device has failed to be reset.

[0249] Step S313, determining whether the weighing reset result point corresponding to the weighing device has returned to 0.

[0250] Here, the PLC can reset the value of the weighing reset result point to 0 before the next reset process of the weighing device. If it is determined that the weighing reset result point corresponding to the weighing device has been reset to 0, the current reset process is terminated.

[0251] In the weighing equipment zeroing process provided in the embodiment of the present disclosure, the host computer will first send a third weighing instruction to the weighing equipment to obtain a third weighing result before sending a zeroing command each time, and compare the third weighing result with the pre-set upper and lower weight limits to confirm whether there is any foreign matter on the weighing equipment that affects the weighing result. Once the presence of foreign matter is confirmed, an alarm instruction is directly sent to the PLC to remind the mechanical engineer (Mechanical Engineer, ME) responsible for troubleshooting on-site equipment problems.

[0252] FIG11 is a schematic diagram of an implementation process of transferring injection data across logistics lines provided by an embodiment of the present disclosure. As shown in FIG11 , the transfer process of injection data across logistics lines may include the following steps S401 to S419:

[0253] Step S401: The host computer software is initialized and connected to the PLC, code scanning device, and weighing device successfully, and the injection data cross-logistics line transfer process is started;

[0254] In step S402 , in response to detecting that the battery cell to be weighed enters the weighing area of ​​the weighing device, the PLC sets the signal value of the weighing trigger signal point corresponding to the weighing device to True.

[0255] Step S403: The host computer reads the signal value of the weighing trigger signal point corresponding to the weighing device;

[0256] Step S404: When the host computer reads the signal value of the weighing trigger signal point as True, it determines whether to open the dry run branch;

[0257] It is understandable that when the dry run branch is turned on, the host computer can shield peripherals such as code scanning devices and weighing devices to achieve dry run testing of the host computer software.

[0258] When the idle run branch is not enabled, the process goes to step S405.

[0259] In step S405 , the host computer sends a code scanning instruction to the code scanning device, and sets the signal value of the weighing trigger signal point corresponding to the weighing device to False.

[0260] Step S406: The barcode scanner responds to the barcode scanning instruction, scans the battery cell, and obtains and returns the scanning result;

[0261] Step S407: The host computer determines whether the code scanning is successful based on the code scanning result;

[0262] If the code scanning is successful, the process proceeds to step S408; if the code scanning is unsuccessful, the process proceeds to step S409.

[0263] Step S408: The host computer sends a first weighing instruction to the weighing device.

[0264] Step S409: The host computer writes the fourth weighing result value to the weighing result point corresponding to the weighing device in the PLC;

[0265] The fourth weighing result value indicates that the barcode scanning device failed to scan the barcode. The PLC can perform barcode scanning exception processing on the current battery cell based on the fourth weighing result value.

[0266] Step S410: The weighing device weighs the current battery cell in response to the first weighing instruction, obtains and returns a first weighing result;

[0267] Step S411: The host computer determines whether the weighing is successful based on the first weighing result;

[0268] If the weighing is unsuccessful, the process proceeds to step S412; if the weighing is successful, the process proceeds to step S413.

[0269] Step S412: The host computer writes the third weighing result value to the weighing result point corresponding to the weighing device;

[0270] The third weighing result value indicates a weighing failure.

[0271] Step S413: The host computer determines whether the first weighing result is within a preset weight range;

[0272] If the first weighing result is not within the preset weight range, the process proceeds to step S414 ; if the third weighing result is within the preset weight range, the process proceeds to step S415 .

[0273] Step S414: the host computer writes the first weighing result value to the weighing result point corresponding to the weighing device;

[0274] The first weighing result value indicates that the first weighing result is not within the preset weight range.

[0275] Step S415: The host computer obtains the liquid injection data of the battery cell from the local database according to the battery cell code in the scan result;

[0276] The liquid injection data of the battery cell is recorded in the local database by the host computer after the liquid injection of the battery cell is completed.

[0277] Step S416: The host computer sends an outbound request for the battery cell to the MES based on the injection data of the battery cell, and receives an outbound request result returned by the MES;

[0278] The host computer can report the battery cell's injection data to the MES by sending an outbound request for the battery cell to the MES.

[0279] Step S417: The host computer determines whether the cell exit is successful based on the exit request result;

[0280] If the battery cell is not successfully shipped out, the process proceeds to step S418; if the battery cell is successfully shipped out, the process proceeds to step S419.

[0281] Step S418: The host computer writes the second weighing result value to the weighing result point corresponding to the weighing device;

[0282] The second weighing result value indicates that the outbound request failed.

[0283] Step S419: The host computer records the production data of the battery cell and prints the operation log.

[0284] In the cross-logistics line transfer process of injection data provided by the embodiment of the present disclosure, when the battery cell is injected at the injection station, the host computer obtains the battery cell injection data from the PLC through the position of the battery cell in the pallet, and binds the position of the battery cell in the pallet with the battery cell injection data and stores them in the local database; in the unloading area, the code scanning device and the weighing device are linked, the battery cell code is obtained by the code scanning device, and the position of the battery cell in the pallet is queried based on the battery cell code, thereby querying the battery cell injection data (such as injection process information) from the local database, and uploading the injection data to the MES system. In this way, the cross-logistics line transfer of the battery cell injection data can be achieved. In addition, since a large number of battery cells will be piled up on the logistics line, if the injection data stored in the PLC is transferred to the unloading area through the logistics line, the injection data of the battery cells may be lost in batches in the event of an unexpected power outage. The injection data cross-logistics line transfer process provided by the embodiment of the present disclosure does not rely on the logistics line for injection data transmission. After the battery cell injection is completed, the injection data is saved to the local database of the host computer. At this time, even if the battery cells are piled up on the logistics line and the equipment is powered off, the injection data will not disappear due to the power outage, which can reduce the problem of no data in batches of battery cells caused by the loss of injection data.

[0285] 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.

[0286] 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.

[0287] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0288] In the several embodiments provided in the present disclosure, it should be understood that the disclosed controller and method can be implemented in other ways. The controller embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the controller or unit can be electrical, mechanical or other forms.

[0289] 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.

[0290] 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, host computer, first control equipment and weighing equipment; wherein, The liquid injection device is used to inject liquid into the battery cell assembly placed in the tray during the battery cell liquid injection process; The host computer is configured to collect and record the injection data of the battery cells in the battery cell assembly to a local computer based on the positions of the battery cells in the tray after the injection is completed; The first control device is configured to send a weighing trigger signal to the host computer in response to detecting that the battery cell after being injected with liquid enters the weighing area of ​​the weighing device; The host computer is configured to send a first weighing instruction to the weighing device in response to receiving the weighing trigger signal; The weighing device is configured to weigh the battery cell in response to the first weighing instruction, and obtain and send a first weighing result to the host computer; The host computer is used to obtain the liquid injection data of the battery cell from the local computer when the first weighing result is within a preset weight range, and send a liquid injection outbound request for the battery cell to the production execution system based on the liquid injection data.

2. The liquid injection system according to claim 1, wherein: The injection system further includes a second control device; The second control device is used 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 after determining that the injection device has completed the injection of the battery cell; The host computer is configured to collect the liquid injection data of the battery cell from the second control device in response to receiving the data acquisition signal based on the position of the battery cell in the tray, and store the liquid injection data locally.

3. The liquid injection system according to claim 1 or 2, wherein: The liquid injection system also includes a blanking module; The host computer is configured to receive an outbound request result returned by the production execution system in response to the liquid injection outbound request, and send an outbound control signal to the first control device if the outbound request result indicates that the request is successful; The first control device is used to control the unloading module to transport the battery cell out of the liquid injection station in response to the outbound control signal.

4. The liquid injection system according to claim 3, wherein: The host computer is configured to write the first weighing result value to the weighing result point corresponding to the weighing device in the first control device when the first weighing result is not within the preset weight range; And / or, the host computer is configured to write a second weighing result value to the weighing result point when the outbound request result representation request fails.

5. The liquid injection system according to claim 4, wherein: The host computer is configured to determine whether the first weighing result is within a preset weight range when it is determined that the weighing device has successfully weighed the weight according to the first weighing result; And / or, the host computer is configured to write a third weighing result value into the weighing result point when it is determined that the weighing device has failed weighing according to the first weighing result.

6. The liquid injection system according to any one of claims 1 to 5, wherein: The host computer is configured to send a second weighing instruction to the weighing device in response to receiving a spot inspection trigger signal for the weighing device; The weighing device is configured to weigh the test weight pre-placed on the weighing device in response to the second weighing instruction, and obtain and send a second weighing result to the host computer; The host computer is used to receive the second weighing result and verify the second weighing result based on preset verification conditions to obtain the inspection result of the weighing equipment.

7. The liquid injection system according to claim 6, wherein: The preset verification condition includes a preset error range; The host computer is configured to determine that the inspection result of the weighing device is the first inspection result when an error between the second weighing result and the reference weight of the test weight is within a preset error range; The first spot inspection result indicates that the weighing device has passed the calibration; and / or, the host computer is configured to determine that the inspection result of the weighing device is the second inspection result when the error between the second weighing result and the reference weight exceeds the preset error range; The second spot inspection result indicates that the weighing device fails the calibration.

8. The liquid injection system according to claim 7, wherein: The host computer is configured to write the first spot inspection result value into the spot inspection result point corresponding to the weighing device in the first control device when determining that the spot inspection result of the weighing device is the first spot inspection result; And / or, the host computer is configured to, when determining that the spot inspection result of the weighing device is the second spot inspection result, write the second spot inspection result value into the spot inspection result point.

9. The liquid injection system according to claim 7 or 8, wherein: The host computer is configured to upload the spot inspection result and / or the second weighing result to the production execution system when the spot inspection result is the first spot inspection result.

10. The liquid injection system according to claim 9, wherein: The host computer includes a first display interface, which includes an inspection operation area and a result upload area; The host computer is configured to display a first spot inspection trigger control corresponding to the weighing device in the spot inspection operation area, and receive the spot inspection trigger signal in response to a trigger operation on the first spot inspection trigger control; And / or, the host computer is used to display a result upload control in an operable manner in the result upload area when the inspection result is the first inspection result, and upload the inspection result and / or the second weighing result to the production execution system in response to a triggering operation on the result upload control.

11. The liquid injection system according to any one of claims 6 to 10, wherein: The first control device is configured to send the spot inspection trigger signal to the host computer in response to detecting a first spot inspection trigger operation.

12. The liquid injection system according to any one of claims 6 to 11, wherein: The host computer includes a second display interface, the second display interface includes a parameter configuration area, the parameter configuration area includes a first configuration sub-area and a second configuration sub-area, the first configuration sub-area is used to configure the weighing control parameters of the battery cell, and the second configuration sub-area is used to configure the inspection control parameters of the weighing equipment; The host computer is configured to obtain the configured preset weight range in response to a configuration operation performed on the weighing control parameters of the battery cell in the first configuration sub-area; And / or, the host computer is used to obtain the configured preset verification condition in response to the configuration operation of the inspection and control parameters in the second configuration sub-area.

13. The liquid injection system according to any one of claims 1 to 12, wherein: The first control device is configured to send a reset trigger signal to the host computer in response to detecting that the battery cell leaves the weighing area of ​​the weighing device; The host computer is configured to send a third weighing instruction to the weighing device in response to receiving the reset trigger signal; The weighing device is configured to obtain the third weighing result of the current weighing in response to the third weighing instruction, and send the third weighing result to the host computer; The host computer is configured to receive the third weighing result and, if the absolute value of the third weighing result does not exceed a preset weight threshold, send a reset instruction to the weighing device; The weighing device is used to perform a zeroing operation in response to the zeroing instruction.

14. The liquid injection system according to claim 13, wherein: The host computer is configured to send an alarm instruction to the first control device when the absolute value of the third weighing result exceeds the preset weight threshold; The first control device is configured to output alarm information in response to the alarm instruction.

15. A method for injecting liquid into a battery cell and exiting the station, applied to a host computer, comprising: In response to receiving a weighing trigger signal, sending a first weighing instruction to the weighing device; the weighing trigger signal is sent by the first control device to the host computer in response to detecting that the battery cell after injection enters the weighing area of ​​the weighing device; receiving a first weighing result sent by the weighing device; the first weighing result is sent by the weighing device after weighing the battery cell in response to the first weighing instruction; When the first weighing result is within a preset weight range, the battery cell injection data is obtained locally; wherein the battery cell injection data is collected and recorded locally by the host computer based on the position of the battery cell in the tray during the battery cell injection process and after the injection device completes the injection of the battery cell set placed in the tray; Based on the injection data, a liquid injection outbound request for the battery cell is sent to a production execution system.

16. The battery cell injection and exit method according to claim 15, wherein: The method further comprises: In response to receiving the data acquisition signal, based on the position of the battery cell in the tray, the injection data of the battery cell is collected from the second control device, and the injection data is stored locally; wherein, the injection data of the battery cell is obtained by the second control device during the battery cell injection process, and the data acquisition signal is sent to the host computer by the second control device after determining that the injection device has completed the injection of the battery cell.

17. The battery cell injection and exit method according to claim 15 or 16, wherein: The method further comprises: receiving an outbound request result returned by the production execution system in response to the liquid injection outbound request; When the outbound request result indicates that the request is successful, an outbound control signal is sent to the first control device, so that the first control device controls the unloading module to transport the battery cell out of the liquid injection station in response to the outbound control signal.

18. The battery cell injection and exit method according to any one of claims 15 to 17, wherein: The method further comprises: In response to receiving a spot inspection trigger signal for the weighing device, sending a second weighing instruction to the weighing device; receiving a second weighing result sent by the weighing device; wherein the second weighing result is sent by the weighing device after weighing a test weight pre-placed on the weighing device in response to the second weighing instruction; Based on preset verification conditions, the second weighing result is verified to obtain the inspection result of the weighing equipment.

19. The battery cell injection and exit method according to claim 18, wherein: The method further comprises: In a case where the spot inspection result is the first spot inspection result, the spot inspection result and / or the second weighing result is uploaded to the production execution system; the first spot inspection result indicates that the weighing device has passed the calibration.

20. The battery cell injection and exit method according to any one of claims 15 to 19, wherein: The method further comprises: In response to receiving a reset trigger signal, sending a third weighing instruction to the weighing device; the reset trigger signal is sent by the first control device in response to detecting that the battery cell has left the weighing area of ​​the weighing device; receiving a third weighing result sent by the weighing device; wherein the third weighing result is obtained and sent by the weighing device after weighing in response to the third weighing instruction; In a case where the absolute value of the third weighing result does not exceed a preset weight threshold, a reset instruction is sent to the weighing device, so that the weighing device performs a reset operation in response to the reset instruction.

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