Method, apparatus, and device for controlling welding device, storage medium, and program product

Abstract

A method for controlling a welding device, the welding device comprising a heat seal controller and a welding head, and the method for controlling a welding device comprising: in response to a battery to be welded being located below the welding device, the heat seal controller acquires the temperature of the welding head before welding; if the heat seal controller is in a normal state before welding, the heat seal controller controls the welding head to be in a heating state; after the welding head completes welding on said battery, the heat seal controller acquires the temperature of the welding head after welding; and, on the basis of the temperature after welding, it is determined whether the heat seal controller is in a normal state after welding. Also provided are an apparatus for controlling a welding device, a device for controlling a welding device, a computer-readable storage medium, and a computer program product. By means of respective corresponding temperatures of the welding head before welding and after welding, it is possible to determine whether the heat seal controller is in a normal state during the whole welding stage, thus reducing situations of a welding seam of a battery being below grade due to a welding device that is in an abnormal state, and thereby lowering the time costs of production and the economic costs of production for battery welding.

Description

Method, device, equipment, storage medium and program product for controlling welding equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on and claims the priority of Chinese patent application with application number 202410309780.1, application date March 19, 2024, and invention name “Method, device, equipment, storage medium and program product for controlling welding equipment”. The entire content of this Chinese patent application is hereby incorporated into this disclosure as a reference. Technical Field

[0003] The present disclosure relates to the technical field of welding equipment detection, and in particular to a method, apparatus, device, storage medium, and program product for controlling welding equipment. Background Art

[0004] New energy batteries are being used more and more widely in life and industry, for example, in the fields of energy storage and new energy vehicles.

[0005] Currently, after welding new energy batteries, weld quality testing is required to determine if the equipment has malfunctioned. This can lead to unsatisfactory welds due to equipment malfunctions, necessitating re-welding of numerous defective batteries, increasing time and costs.

[0006] Summary of the Invention

[0007] In view of this, the embodiments of the present disclosure at least provide a method, apparatus, device, storage medium, and program product for controlling welding equipment.

[0008] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0009] In a first aspect, an embodiment of the present disclosure provides a method for controlling a welding device, wherein the welding device includes a heat seal controller and a welding probe; the welding probe is a hot melt welding probe; the method for controlling the welding device includes:

[0010] In response to a battery to be welded being under the welding device, obtaining, by the heat sealing controller, a temperature of the welding probe before welding;

[0011] In a case where it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding, controlling the welding probe to be in a heating state by the heat sealing controller;

[0012] When the welding probe in the heated state completes welding the battery to be welded, obtaining the temperature of the welding probe after welding by the heat sealing controller;

[0013] determining whether the heat seal controller is in a normal state after welding based on the temperature after welding;

[0014] Wherein, whether the heat sealing controller is in a normal state before welding and whether the heat sealing controller is in a normal state after welding are determined based on a room temperature range.

[0015] In the embodiment of the present disclosure, the temperature of the welding probe before welding can be used to determine whether the heat seal controller is in a normal state before welding. Only when the heat seal controller is in a normal state before welding will the welding probe be controlled to be in a heating state. In this way, it is possible to determine in advance whether the welding equipment has an abnormality before welding, thereby reducing the situation where the battery weld is unqualified due to welding the battery with abnormal welding equipment. Moreover, after the battery to be welded is completed, the temperature of the welding probe after welding will continue to be obtained to determine again whether the heat seal controller is in a normal state after welding. In this way, the corresponding temperatures of the welding probe before and after welding can be used to determine whether the heat seal controller is in a normal state throughout the entire welding stage, thereby greatly reducing the situation where the battery weld is unqualified due to welding equipment in an abnormal state, thereby reducing the production time cost and production economic cost of battery welding.

[0016] Furthermore, during the welding process and after the battery to be welded is completed, the welding probe will continue to obtain the welding probe temperature during welding and the welding probe temperature after welding, and once again determine whether the heat seal controller is in a normal state during welding and after welding. In this way, based on the corresponding temperatures of the welding probe before, during, and after welding, it is possible to determine whether the heat seal controller is in a normal state throughout the welding process. This can greatly reduce the situation where the battery weld is unqualified due to abnormal welding equipment, thereby reducing the production time and economic costs of battery welding.

[0017] In some embodiments, the welding probe is a hot melt welding probe; the battery to be welded is a bare cell; the method of controlling the welding equipment also includes: when the welding probe is in a heating state, controlling the hot melt welding probe through the heat sealing controller to perform hot melt welding on the insulating film and the top cover of the bare cell, and on the bottom support of the bare cell respectively.

[0018] In the embodiment of the present disclosure, the insulating film and the top cover of the bare cell, as well as the insulating film and the bottom support of the bare cell can be accurately hot-melt welded by the welding probe in a heated state.

[0019] In some embodiments, in response to the battery to be welded being under the welding device, obtaining the temperature of the welding probe before welding through the heat sealing controller includes: in response to the battery to be welded being under the welding device, sending a temperature acquisition control signal to the heat sealing controller after a first preset time; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature before welding; and receiving the temperature before welding sent by the heat sealing controller.

[0020] In the disclosed embodiment, when a battery to be welded is within the welding equipment, a temperature acquisition control signal is sent to the heat sealing controller after a first preset time. This temperature acquisition control signal controls the heat sealing controller to obtain the temperature of the welding probe before welding. Thus, obtaining the temperature of the welding probe after the first preset time better represents the current state of the heat sealing controller, thereby improving the accuracy of determining the heat sealing controller's status.

[0021] In some embodiments, when it is determined that the heat sealing controller is in a normal state before welding based on the temperature before welding, the welding probe is controlled to be in a heating state by the heat sealing controller, including: when the temperature before welding is within the room temperature range, determining that the heat sealing controller is in a normal state before welding; when the heat sealing controller is in a normal state before welding, sending an open signal to the heat sealing controller; the heat sealing controller is used to control the welding probe to be in a heating state in response to the open signal.

[0022] In the disclosed embodiments, by determining whether the pre-welding temperature of the welding probe is within the room temperature range, it is possible to accurately determine whether the heat seal controller is operating normally before welding. Only when the heat seal controller is operating normally before welding can the heat seal controller control the welding probe to a heated state. This allows for pre-welding determination of welding equipment anomalies, reducing the likelihood of unsatisfactory battery welds resulting from welding with abnormal equipment, thereby reducing both production time and economic costs.

[0023] In some embodiments, the above method also includes: when the welding probe is in the heating state and is in the welding process, obtaining the temperature of the welding probe during welding through the heat sealing controller; when the welding probe in the heating state completes welding the battery to be welded, obtaining the temperature of the welding probe after welding through the heat sealing controller, including: based on the temperature of the welding probe during welding, determining whether the heat sealing controller is in a normal state during welding; when it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, obtaining the temperature of the welding probe after welding through the heat sealing controller.

[0024] In the disclosed embodiment, the temperature of the welding probe during welding can be used to determine whether the heat seal controller is in a normal state during welding. If the heat seal controller is in a normal state during welding, the welding probe continues to weld the battery to be welded. After welding is completed, the temperature of the welding probe after welding is obtained to determine the state of the heat seal controller after welding. In this way, the situation of low battery welding quality caused by abnormal heat seal controller can be reduced.

[0025] In some embodiments, when the welding probe is in the heating state, the temperature of the welding probe during welding is obtained by the heat sealing controller, including: when the welding probe is in the first stage, the temperature of the welding probe in the first stage is obtained by the heat sealing controller, and, based on the temperature of the first stage, it is determined whether the heat sealing controller is in a normal state; wherein, the first stage is used to characterize that the welding probe has been heated but has not contacted the battery to be welded; when it is determined that the heat sealing controller is in a normal state, the heat sealing controller is controlled to enter the second stage; wherein, the second stage is used to characterize that the welding probe has been heated and the battery to be welded is welded; when the welding probe is in the second stage, the temperature of the welding probe in the second stage is obtained by the heat sealing controller.

[0026] In the disclosed embodiment, during the welding process, the welding probe in a heated state can obtain the temperature of the welding probe when it is not in contact with the battery to be welded (i.e., the temperature in the first stage) and the temperature of the welding probe when it is welding the battery to be welded (i.e., the temperature in the second stage). The temperature in the second stage is obtained based on the temperature in the first stage, assuming that the heat seal controller is in a normal state when the welding probe is in the first stage. In this way, the situation where an abnormality of the heat seal controller is discovered when the welding probe is welding the battery to be welded can be minimized, thereby reducing the time and economic costs in the battery production process.

[0027] In some embodiments, determining whether the heat sealing controller is in a normal state during welding based on the temperature of the welding probe during welding includes: when the temperature of the welding probe in the second stage is within a preset temperature range, determining that the heat sealing controller is in a normal state during welding; when determining that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, obtaining the temperature of the welding probe after welding through the heat sealing controller includes: when the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, after a second preset time, sending a temperature acquisition control signal to the heat sealing controller; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature after welding; and receive the temperature after welding sent by the heat sealing controller.

[0028] In the disclosed embodiment, by determining whether the temperature of the welding probe in the second stage is within a preset temperature range, it is possible to determine whether the heat seal controller is in a normal state during welding. Thus, the temperature of the welding probe can accurately determine whether the heat seal controller is in a normal state during welding. Thus, when an abnormality occurs in the heat seal controller, welding can be stopped promptly to reduce damage to the battery caused by the abnormality. Furthermore, if it is determined that the heat seal controller is in a normal state during welding, the temperature of the welding probe after cooling for a second preset period of time can be obtained. This allows accurate acquisition of the temperature of the welding probe after cooling, thereby improving the accuracy of determining the heat seal controller.

[0029] In some embodiments, the method for controlling welding equipment further includes: when the heat sealing controller is in an abnormal state after or during welding, sending an abnormal alarm message and obtaining a welding image of the battery to be welded; detecting the welding area in the welding image to obtain a detection result; the detection result is used to characterize whether there is a defect in the welding area.

[0030] In the disclosed embodiment, if the heat seal controller is in an abnormal state after or during welding, a welding image of the battery to be welded is acquired; the weld area in the weld image is inspected to determine whether there are defects in the weld area. This automatically identifies the weld quality of the battery by acquiring the weld image, thereby improving production efficiency. Furthermore, if the heat seal controller is in an abnormal state after welding, an abnormality alarm is issued. This provides a timely alert to the operator, allowing them to intervene in the heat seal controller.

[0031] In some embodiments, the detecting the welding area in the welding image to obtain the detection result includes: when the temperature of the welding probe is less than the lower limit of the temperature range, performing a welding leak defect detection on the welding area in the welding image to obtain the detection result; when the temperature of the welding probe is greater than the upper limit of the temperature range, performing a welding leak defect detection on the welding area in the welding image to obtain the detection result.

[0032] In the disclosed embodiments, the type of defect detection method for the weld area in the weld image can be selected based on the temperature of the welding probe. When the temperature of the welding probe is less than the lower limit of the temperature range, the weld area in the weld image can be processed using the detection method of missed weld defects. When the temperature of the welding probe is greater than the upper limit of the temperature range, the weld area in the weld image can be processed using the detection method of over-weld defects. In this way, by processing the weld area in the weld image using the detection method corresponding to the temperature of the welding probe, the accuracy of detection can be improved.

[0033] In a second aspect, an embodiment of the present disclosure provides a device for controlling a welding device, wherein the welding device includes a heat seal controller and a welding probe; the welding probe is a hot melt welding probe; the device for controlling the welding device includes:

[0034] a temperature acquisition unit configured to acquire the temperature of the welding probe before welding via the heat sealing controller in response to the battery to be welded being under the welding device;

[0035] a control unit configured to control the welding probe to be in a heating state through the heat sealing controller when it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding;

[0036] The temperature acquisition unit is further configured to acquire the temperature of the welding probe after welding through the heat sealing controller when the welding probe in the heated state completes welding the battery to be welded;

[0037] a state determining unit configured to determine whether the heat sealing controller is in a normal state after welding based on the temperature after welding;

[0038] Wherein, whether the heat sealing controller is in a normal state before welding and whether the heat sealing controller is in a normal state after welding are determined based on a room temperature range.

[0039] In a third aspect, an embodiment of the present disclosure provides a device for controlling welding equipment, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, some or all of the steps in the above method are implemented.

[0040] In a fourth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements part or all of the steps in the above method when executed by a processor.

[0041] In a fifth aspect, an embodiment of the present disclosure provides a computer program product, comprising a computer program or instructions, which implement some or all of the steps in the above method when executed by a processor.

[0042] 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

[0043] 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.

[0044] FIG1 is a schematic diagram of a first implementation flow of a method for controlling welding equipment provided by an embodiment of the present disclosure;

[0045] FIG2 is a second schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0046] FIG3 is a third schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0047] FIG4 is a fourth schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0048] FIG5 is a fifth schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0049] FIG6 is a sixth schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0050] FIG7 is a seventh schematic diagram of a flow chart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0051] FIG8 is a schematic diagram of an eighth implementation flow of a method for controlling welding equipment provided by an embodiment of the present disclosure;

[0052] FIG9 is a ninth flowchart of a method for controlling welding equipment according to an embodiment of the present disclosure;

[0053] FIG10 is a schematic diagram of a tenth implementation flow of a method for controlling welding equipment provided by an embodiment of the present disclosure;

[0054] FIG11 is a schematic diagram of the structure of a device for controlling welding equipment provided by an embodiment of the present disclosure;

[0055] FIG12 is a schematic diagram of a hardware entity of a device for controlling welding equipment in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions of this application are further elaborated in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] 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.

[0058] 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 application described herein can be implemented in an order other than that illustrated or described herein.

[0059] 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 this application pertains. The terms used herein are for the purpose of describing this application only and are not intended to limit this application.

[0060] 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.

[0061] In the embodiments of the present disclosure, the battery may be a battery cell. A battery cell refers to a basic unit that can realize the mutual conversion of chemical energy and electrical energy, 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 be recharged to activate the active material after the battery cell is discharged and continue to be used. 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-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present disclosure are not limited to this.

[0062] 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 hybrid through a busbar component.

[0063] In order to solve the technical problem in the related art that a large number of batteries have unqualified welds due to the determination of whether the welding equipment has an abnormality by detecting the weld quality after welding, which increases production time and economic costs, the embodiments of the present disclosure provide a method for controlling welding equipment. The method for controlling welding equipment can be applied to a hot melt welding process. Before, during and after hot melt welding of the battery to be welded, the temperature of the welding probe in the welding equipment can be obtained to detect the status of the welding equipment.

[0064] In the embodiment of the present disclosure, the above method for controlling welding equipment can be applied to a controller, which can be a programmable logic controller (PLC). As shown in FIG1 , the method includes steps S101 to S104, wherein:

[0065] Step S101 : in response to a battery to be welded being under the welding device, obtaining the temperature of the welding probe before welding through the heat sealing controller.

[0066] Here, the welding equipment includes a heat seal controller and a welding probe. The heat seal controller is used to obtain the temperature of the welding probe and control the welding probe to weld the battery to be welded. The welding probe is provided with a thermal fuse, which is heated to melt the thermal fuse, thereby achieving heat-melt welding. In some embodiments, the welding probe is provided with a temperature sensor that can detect the temperature of the welding probe and transmit the temperature of the welding probe to the heat seal controller, which can then send the temperature to the controller.

[0067] In the embodiment of the present disclosure, the welding equipment is located at a hot melt welding station, which is also provided with a position detection device. When the battery to be welded is located at the hot melt welding station, the position detection device can send an in-position signal to the controller to indicate that the battery to be welded is already under the welding equipment. At this time, the controller can respond to the in-position signal and obtain the temperature of the welding probe before welding through the heat sealing controller.

[0068] In some embodiments, the position detection device may be a photoelectric sensor.

[0069] Step S102 : When it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding, the heat sealing controller is used to control the welding probe to be in a heating state.

[0070] Here, the temperature of the welding probe before welding refers to the temperature of the welding probe before it is heated. Under normal circumstances, this temperature is close to room temperature. However, if the circuit of the heat seal controller is abnormal, the temperature of the welding probe before welding may be much higher or much lower than room temperature. Therefore, by obtaining the temperature of the welding probe before welding, it is possible to determine whether the heat seal controller is in a normal state before welding.

[0071] In some embodiments, if the heat seal controller is determined to be in an abnormal state before welding based on the pre-welding temperature, an alarm message can be directly output. This allows for early detection of welding equipment anomalies before welding, preventing unsatisfactory welds caused by welding batteries with abnormal equipment, thereby reducing production time and economic costs.

[0072] In the embodiment of the present disclosure, when the heat sealing controller is in a normal state before welding, the welding probe can be controlled by the heat sealing controller to be in a heating state to continue the welding work.

[0073] Step S103 , when the welding probe in the heated state completes welding the battery to be welded, obtaining the temperature of the welding probe after welding through the heat sealing controller.

[0074] Here, the temperature of the welding probe after welding is the temperature of the welding probe after welding and cooling. By the temperature after this welding, it can be determined whether the welding probe can normally cool down, to determine whether the heat seal controller is in normal state.

[0075] In the disclosed embodiment, whether the heat seal controller is in a normal state during welding can be determined by determining whether the temperature of the welding probe during welding is within the hot melt temperature range. If the temperature of the welding probe during welding is within the hot melt temperature range, the heat seal controller is determined to be in a normal state during welding; if the temperature of the welding probe during welding is not within the hot melt temperature range, the heat seal controller is determined to be in an abnormal state during welding.

[0076] In an embodiment of the present disclosure, when it is determined that the heat seal controller is in a normal state during welding based on the temperature during welding, the heat seal controller can control the welding probe in a heated state to weld the battery to be welded. When it is determined that the welding of the battery to be welded is completed, the temperature of the welding probe after welding can be obtained by the heat seal controller after a preset time. Here, the reason for obtaining the temperature of the welding probe after welding after the preset time is that it is necessary to determine whether the welding probe can cool down normally based on the temperature of the welding probe after welding. Therefore, the preset time is the cooling time of the welding probe. Because the welding probe is pulse heated, the cooling time is very short. Exemplarily, the preset time can be 6 seconds.

[0077] Step S104: determining whether the heat sealing controller is in a normal state after welding based on the temperature after welding.

[0078] In embodiments of the present disclosure, whether the welding probe can cool down normally after welding can be determined based on the temperature after welding. If the welding probe can cool down normally, the heat seal controller is determined to be in a normal state after welding. If the welding probe cannot cool down normally, the heat seal controller is determined to be in an abnormal state after welding. In some embodiments, whether the welding probe can cool down properly can be determined by determining whether the temperature after welding is within a preset temperature range. For example, the preset temperature range can be room temperature.

[0079] In the embodiment of the present disclosure, the temperature of the welding probe before welding can be used to determine whether the heat seal controller is in a normal state before welding. Only when the heat seal controller is in a normal state before welding will the welding probe be controlled to be in a heating state. In this way, it is possible to determine in advance whether the welding equipment has an abnormality before welding, thereby reducing the situation where the battery weld is unqualified due to welding the battery with abnormal welding equipment. Moreover, after the battery to be welded is completed, the temperature of the welding probe after welding will continue to be obtained to determine again whether the heat seal controller is in a normal state after welding. In this way, the corresponding temperatures of the welding probe before and after welding can be used to determine whether the heat seal controller is in a normal state throughout the entire welding stage, thereby greatly reducing the situation where the battery weld is unqualified due to welding equipment in an abnormal state, thereby reducing the production time cost and production economic cost of battery welding.

[0080] In some embodiments, when the above-mentioned method for controlling welding equipment is applied to a hot-melt welding insulating film process, the battery to be welded is a bare cell, and the welding probe is a hot-melt welding probe. The welding process of the battery to be welded using the welding probe may include: when the welding probe is in a heated state, controlling the hot-melt welding probe via a heat sealing controller to hot-melt weld the insulating film to the top cover of the bare cell, and the insulating film to the bottom support of the bare cell, respectively.

[0081] In some embodiments, the insulating film may be a mylar film.

[0082] In some embodiments, as shown in FIG2 , the above step S101 may be implemented through steps S201 and S202 :

[0083] Step S201, in response to the battery to be welded being under the welding device, a temperature acquisition control signal is sent to the heat sealing controller after a first preset time; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature before welding.

[0084] Step S202: receiving the temperature before welding sent by the heat sealing controller.

[0085] In an embodiment of the present disclosure, when the battery to be welded is in the welding device, the controller can start a timer. After the timer has passed a first preset time, the controller is prompted. The controller can then send a temperature acquisition control signal to the heat sealing controller. The temperature acquisition control signal can control the heat sealing controller to obtain the temperature of the welding probe before welding.

[0086] In an embodiment of the present disclosure, when a battery to be welded is in a welding device, the temperature of the welding probe before welding is not immediately obtained. Instead, the temperature is obtained after a first preset time delay. This is because when the battery to be welded is in the welding device, the heat seal controller is still in standby mode, and the temperature obtained at this time cannot determine whether the welding device is abnormal. Therefore, in an embodiment of the present disclosure, the controller can first send a hot melt start signal to the heat seal controller. This hot melt start signal can put the heat seal controller into a heat seal preparation state. Under normal circumstances, the heat seal controller will not control the welding probe to heat. Then, after the first preset time has passed, the temperature of the welding probe before welding is obtained. If the heat seal controller is in an abnormal state, it may control the welding probe to heat while in standby mode. At this time, the temperature of the welding probe before welding obtained is more representative of the current state of the heat seal controller.

[0087] In some embodiments, the first preset time is related to the product type of the battery to be welded.

[0088] In some embodiments, the temperature sensor on the welding probe can continuously detect the real-time temperature of the welding probe and continuously transmit the real-time temperature of the welding probe to the heat sealing controller. When the battery to be welded is in the welding device, the heat sealing controller sends the temperature corresponding to the timestamp of the received temperature acquisition control signal to the controller. In other embodiments, after receiving the temperature acquisition control signal from the controller, the heat sealing controller can send a control instruction to the temperature sensor on the welding probe, which instructs the temperature sensor to acquire the current temperature of the welding probe. The temperature sensor then transmits the acquired temperature to the heat sealing controller, which then transmits the temperature to the controller.

[0089] In the disclosed embodiment, when a battery to be welded is within the welding equipment, a temperature acquisition control signal is sent to the heat sealing controller after a first preset time. This temperature acquisition control signal controls the heat sealing controller to obtain the temperature of the welding probe before welding. Thus, obtaining the temperature of the welding probe after the first preset time better represents the current state of the heat sealing controller, thereby improving the accuracy of determining the heat sealing controller's status.

[0090] In some embodiments, as shown in FIG3 , the above step S102 may be implemented through steps S301 and S302:

[0091] Step S301: When the temperature before welding is within the room temperature range, determine whether the heat sealing controller is in a normal state before welding.

[0092] In the embodiments of the present disclosure, by determining whether the temperature of the welding probe before welding is within the room temperature range, it is possible to determine whether the heat seal controller is in a normal state before welding. In some embodiments, if the temperature before welding is not within the room temperature range, it is determined that the heat seal controller is in an abnormal state before welding. In this case, an alarm message can be issued, and the heat seal controller can be controlled to shut down the heat seal accuracy state.

[0093] Step S302: When the heat sealing controller is in a normal state before welding, a start signal is sent to the heat sealing controller; the heat sealing controller is used to control the welding probe to be in a heating state in response to the start signal.

[0094] In the embodiment of the present disclosure, when the heat sealing controller is in a normal state before welding, the heat sealing controller can be controlled to continue the welding work, that is, an open signal is sent to the heat sealing controller, and the heat sealing controller is used to control the welding probe to be in a heating state in response to the open signal.

[0095] In the disclosed embodiments, by determining whether the pre-welding temperature of the welding probe is within the room temperature range, it is possible to accurately determine whether the heat seal controller is operating normally before welding. Only when the heat seal controller is operating normally before welding can the heat seal controller control the welding probe to a heated state. This allows for pre-welding determination of welding equipment anomalies, reducing the likelihood of unsatisfactory battery welds resulting from welding with abnormal equipment, thereby reducing both production time and economic costs.

[0096] In some embodiments, the above method may further include step 1, and the above step S103 may be implemented by steps 2 and 3:

[0097] Step 1: During the welding process of the welding probe in the heating state, the temperature of the welding probe during welding is obtained by the heat sealing controller.

[0098] Here, the welding process refers to the process from the welding probe being in a heated state to the completion of welding. During the welding process, the welding joint is always in a heated state. Under normal circumstances, the temperature of the welding probe during the welding process should be within the hot melt temperature range. For example, the hot melt temperature range is about 200°C. However, if there is an abnormality in the heat seal controller, the temperature of the welding joint may be lower or higher than the hot melt temperature. At this time, when the battery is welded through the welding probe, welding defects such as over-welding or under-welding will occur. Therefore, it is necessary to obtain the temperature of the welding probe during welding to determine the state of the heat seal controller during the welding process.

[0099] In some embodiments, the real-time temperature of the welding probe during the welding process may be obtained as the temperature of the welding probe during welding.

[0100] Step 2: determining whether the heat seal controller is in a normal state during welding based on the temperature of the welding probe during welding.

[0101] Step 3: When it is determined that the heat sealing controller is in a normal state during welding and the welding probe has completed welding the battery to be welded, the temperature of the welding probe after welding is obtained through the heat sealing controller.

[0102] In the disclosed embodiment, whether the heat seal controller is in a normal state can be determined by determining whether the temperature of the welding probe during welding is within the hot melt temperature range. For example, when the temperature of the welding probe during welding is within the hot melt temperature range, the heat seal controller is determined to be in a normal state; when the temperature of the welding probe during welding is not within the hot melt temperature range, the heat seal controller is determined to be in an abnormal state. When the heat seal controller is in a normal state, the heat seal controller can control the welding probe to weld the battery to be welded until the welding probe in the heated state completes welding the battery to be welded. At this time, the heat seal controller can obtain the temperature of the welding probe after welding.

[0103] In the disclosed embodiments, the temperature of the welding probe during welding can be used to determine whether the heat seal controller is operating normally. If the heat seal controller is operating normally based on the temperature of the welding probe during welding, the welding probe in a heated state continues welding the battery to be welded. After welding is completed, the temperature of the welding probe after welding is obtained to determine the state of the heat seal controller after welding. This can reduce the risk of poor battery welding quality due to abnormal heat seal controller operation.

[0104] In some embodiments, as shown in FIG4 , the above step 1 can be implemented through steps S401 to S403:

[0105] Step S401 : When the welding probe is in the first stage, the temperature of the welding probe in the first stage is obtained by the heat sealing controller, and whether the heat sealing controller is in a normal state based on the temperature in the first stage is determined.

[0106] Here, the first stage indicates that the welding probe has been heated but has not yet contacted the battery to be welded. In other words, in the first stage, the thermal fuse in the welding probe has been heated but has not yet contacted the battery to be welded, and welding has not yet occurred. At this time, the controller can send a temperature acquisition control signal to the heat sealing controller, which controls the heat sealing controller to obtain the temperature of the welding probe in the first stage.

[0107] In the embodiment of the present disclosure, the temperature of the welding probe in the first stage refers to the real-time temperature of the welding probe in the first stage. In other embodiments, the temperature of the welding probe in the first stage may also be the average temperature of the welding probe in the first stage.

[0108] In an embodiment of the present disclosure, whether the heat seal controller is in a normal state during the first stage of the welding probe can be determined by determining whether the temperature of the welding probe during the first stage is within a preset temperature range. If the temperature of the welding probe during the first stage is within the preset temperature range, the heat seal controller is determined to be in a normal state during the first stage of the welding probe. If the temperature of the welding probe during the first stage is not within the preset temperature range, the heat seal controller is determined to be in an abnormal state during the first stage of the welding probe. In some embodiments, if the heat seal controller is in an abnormal state during the first stage of the welding probe, an alarm message can be issued, and the heat seal controller can be used to control the welding probe to exit the heating state.

[0109] Step S402: When it is determined that the heat sealing controller is in a normal state, the heat sealing controller controls the welding probe to enter the second stage.

[0110] Here, the second stage is used to indicate that the welding probe has been heated and the battery to be welded has been welded. In the embodiment of the present disclosure, when the temperature in the first stage is within the preset temperature range, it is determined that the heat sealing controller is in a normal state. At this time, the heat sealing controller can control the welding probe to enter the second stage, that is, to control the welding probe to weld the battery to be welded.

[0111] Step S403 : When the welding probe is in the second stage, the temperature of the welding probe in the second stage is obtained by the heat sealing controller.

[0112] In the embodiment of the present disclosure, when the welding probe is in the second stage, a temperature acquisition control signal can be sent to the heat sealing controller. The temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature of the welding probe in the second stage.

[0113] In some embodiments, the temperature of the welding probe during the second stage refers to the real-time temperature of the welding probe during the second stage. This is because, when an abnormality is determined in the heat sealing controller based on the real-time temperature of the welding probe during the second stage, the heat sealing controller can be promptly controlled to stop welding.

[0114] In the disclosed embodiment, during the welding process, the welding probe in a heated state can obtain the temperature of the welding probe when it is not in contact with the battery to be welded (i.e., the temperature in the first stage) and the temperature of the welding probe when it is welding the battery to be welded (i.e., the temperature in the second stage). The temperature in the second stage is obtained based on the temperature in the first stage, assuming that the heat seal controller is in a normal state when the welding probe is in the first stage. In this way, the situation where an abnormality of the heat seal controller is discovered when the welding probe is welding the battery to be welded can be minimized, thereby reducing the time and economic costs in the battery production process.

[0115] In some embodiments, as shown in FIG4 , step 2 above may be implemented through step S404, and step 3 above may be implemented through steps S405 and S406:

[0116] Step S404: When the temperature of the welding probe in the second stage is within a preset temperature range, it is determined that the heat sealing controller is in a normal state during welding.

[0117] Here, the preset temperature range used to determine whether the welding probe is in a normal state in the second stage and the preset temperature range used to determine whether the welding probe is in a normal state in the first stage may be the same or different.

[0118] In some embodiments, the step of determining whether the heat sealing controller is in a normal state based on the temperature of the welding probe in the second stage is performed continuously, starting from the time the welding probe contacts the battery to be welded until the end of welding. During this process, if it is determined that the temperature of the welding probe in the second stage is not within the preset temperature range, the controller sends an alarm message and controls the welding probe to stop welding.

[0119] Step S405: When the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, after a second preset time, a temperature acquisition control signal is sent to the heat sealing controller; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature after welding.

[0120] Step S406: receiving the post-welding temperature sent by the heat sealing controller.

[0121] In the embodiment of the present disclosure, if the heat sealing controller is in a normal state during the second stage of the welding probe, the welding probe can be controlled to complete the welding of the battery to be welded. After the welding probe completes the welding, a completion signal can be sent to the controller, or the completion signal can be sent through the heat sealing controller. The controller can respond to the completion signal and start the timer. After the timer has passed the second preset time, it sends a signal to the heat sealing controller to control the heat sealing controller to obtain the temperature of the welding probe after welding. Here, the reason for delaying the acquisition of the temperature of the welding probe after welding for the second preset time is that the welding probe needs to cool down after a certain period of time after welding is completed. Since it has been determined in the above steps that the heat sealing controller is in a normal state during the welding process, it is necessary to determine whether the welding probe can cool down normally, that is, it is necessary to determine whether the heat sealing controller is in a normal state after welding through the temperature after welding.

[0122] In some embodiments, after the welding probe completes welding, the controller can send a shutdown signal to the heat sealing controller, and the heat sealing controller can control the welding probe to be in a non-heating state in response to the shutdown signal.

[0123] In the disclosed embodiment, by determining whether the temperature of the welding probe in the second stage is within a preset temperature range, it is possible to determine whether the heat seal controller is in a normal state during welding. Thus, the temperature of the welding probe can accurately determine whether the heat seal controller is in a normal state during welding. Thus, when an abnormality occurs in the heat seal controller, welding can be stopped promptly to reduce damage to the battery caused by the abnormality. Furthermore, if it is determined that the heat seal controller is in a normal state during welding, the temperature of the welding probe after cooling for a second preset period of time can be obtained. This allows accurate acquisition of the temperature of the welding probe after cooling, thereby improving the accuracy of determining the heat seal controller.

[0124] In some embodiments, the above step S105 can be implemented in the following manner: when the temperature after welding is within the room temperature range, it is determined that the heat sealing controller is in a normal state after welding; when the temperature after welding is not within the room temperature range, it is determined that the heat sealing controller is in an abnormal state after welding.

[0125] In the disclosed embodiment, because the welding probe is pulse-heated, both the heating and cooling times are very fast. If the heat seal controller is operating normally, the welding probe will cool to room temperature after the second preset time. Therefore, by determining whether the post-weld temperature is within the room temperature range, it is possible to determine whether the heat seal controller is operating normally after welding.

[0126] In some embodiments, the above-mentioned method of controlling the welding equipment may further include: when the temperature of the welding probe in the second stage is less than the lower limit value of the preset temperature range, determining that there is a welding leak defect in the welding area of ​​the battery to be welded; when the temperature of the welding probe in the second stage is greater than the upper limit value of the preset temperature range, determining that there is an over-welding defect in the welding area of ​​the battery to be welded.

[0127] In the disclosed embodiment, when the temperature of the welding probe in the second stage is less than the lower limit of the preset temperature range, it indicates that the welding temperature of the battery to be welded is low. In this case, it can be preliminarily determined that a leaking weld defect exists in the weld area of ​​the battery to be welded. Similarly, when the temperature of the welding probe in the second stage is greater than the upper limit of the preset temperature range, it indicates that the welding temperature of the battery to be welded is high. In this case, it can be preliminarily determined that an over-welding defect exists in the weld area of ​​the battery to be welded. A weld image of the battery to be welded can then be acquired, and based on the weld image, a final determination can be made as to whether a leaking weld defect or an over-welding defect exists in the weld area.

[0128] In some embodiments, as shown in FIG5 , the method for controlling the welding equipment may further include step S501 and step S502:

[0129] Step S501 : When the heat sealing controller is in an abnormal state after or during welding, an abnormal alarm message is sent and a welding image of the battery to be welded is acquired.

[0130] In an embodiment of the present disclosure, when the heat sealing controller is in an abnormal state after or during welding, the controller can send an abnormal alarm message to the human-computer interaction interface of the welding equipment to prompt the operator.

[0131] In the disclosed embodiments, the heat seal controller is in an abnormal state after welding. Even if the heat seal controller is in a normal state during welding, the weld seam of the battery welded by the heat seal controller may be abnormal. Therefore, if the heat seal controller is in an abnormal state after welding, it is necessary to obtain a welding image of the battery to be welded.

[0132] In some embodiments, a camera is provided during the hot melt welding process. The camera can be either a two-dimensional camera or a three-dimensional camera. If the heat seal controller is in an abnormal state after or during welding, the controller can send an image acquisition instruction to the camera. The camera can respond to the image acquisition instruction to capture the welding area of ​​the battery to obtain a weld image of the battery to be welded.

[0133] Step S502 : Detecting the welding area in the welding image to obtain a detection result; the detection result is used to indicate whether there is a defect in the welding area.

[0134] In the disclosed embodiments, the welding image may be segmented to obtain the welding region in the welding image. In some embodiments, the welding image may be segmented using a trained segmentation model to obtain the welding region in the welding image. The segmentation model may be at least one of the following: a fully convolutional network (FCN), SegNet, DeepLab, and Mask R-CNN (Mask Region-based Convolutional Neural Network).

[0135] In some embodiments, the weld region in the weld image can be input into a trained classification model to obtain classification information of the weld region, and then determine whether the weld region is defective based on the classification information. In some embodiments, the classification model can be a binary classification model, that is, it can output first classification information indicating that the weld region is defective, or output second classification information indicating that the weld region is not defective.

[0136] In some embodiments, the above defects include at least one of the following: over-welding and under-welding. In this case, the above classification model may be a three-classification model, and the three-classification model may output the type of defects in the welding area.

[0137] In some embodiments, shape features of a weld region in a weld image can be extracted, and based on the shape features, whether the weld region has a defect can be determined. In the disclosed embodiment, if the shape features determine that the weld region contains a region with significantly coarse grains, then the weld region is determined to have an over-welding defect; if the shape features determine that the width and height of the weld are uneven, then the weld region is determined to have a leaking defect.

[0138] In some embodiments, if there is a welding defect in the welding area, the welding probe can be controlled by the heat sealing controller to re-weld the battery to be welded.

[0139] In the disclosed embodiment, if the heat seal controller is in an abnormal state after or during welding, a weld image of the battery to be welded is acquired. The weld area in the weld image is inspected to determine whether there are defects in the weld area. This automatically identifies the weld quality of the battery by acquiring the weld image, thereby improving production efficiency.

[0140] In some embodiments, the above step S502 may also be implemented through steps S5021 and S5022:

[0141] Step S5021 : When the temperature of the welding probe is lower than the lower limit of the temperature range, performing welding leak defect detection on the welding area in the welding image to obtain the detection result.

[0142] Step S5022: When the temperature of the welding probe is greater than the upper limit of the temperature range, perform over-welding defect detection on the welding area in the welding image to obtain the detection result.

[0143] In the disclosed embodiment, a defect detection method can be determined based on the temperature of the welding probe. When the temperature of the welding probe is less than the lower limit of the temperature range, it indicates that the temperature of the welding probe is low during or after welding, which may result in a weld defect known as a missed weld. In this case, the weld area in the welding image can be inspected for a missed weld defect to obtain a detection result. When the temperature of the welding probe is greater than the upper limit of the temperature range, it indicates that the temperature of the welding probe is high during or after welding, which may result in a weld defect known as an over-weld. In this case, the weld area in the welding image can be inspected for an over-weld defect to obtain a detection result.

[0144] In some embodiments, the temperature of the welding probe may be the temperature of the welding probe during welding, which may be the temperature of the welding probe during the second stage, and the temperature range during this stage may be the preset temperature range. By comparing the temperature of the welding probe during the second stage with the upper and lower limits of the preset temperature range, a defect detection method to be used for the weld area in the welding image when the heat seal controller is in an abnormal state during welding is determined.

[0145] In some embodiments, the temperature of the welding probe can also be the temperature of the welding probe after welding. The temperature of the welding probe after welding can be compared with the upper and lower limits of the room temperature range. That is, by comparing the temperature of the welding probe after welding and the upper and lower limits of the room temperature range, the defect detection method adopted for the welding area in the welding image is determined when the heat sealing controller is in an abnormal state after welding.

[0146] In the disclosed embodiments, the type of defect detection method for the weld area in the weld image can be selected based on the temperature of the welding probe. When the temperature of the welding probe is less than the lower limit of the temperature range, the weld area in the weld image can be processed using the detection method of missed weld defects. When the temperature of the welding probe is greater than the upper limit of the temperature range, the weld area in the weld image can be processed using the detection method of over-weld defects. In this way, by processing the weld area in the weld image using the detection method corresponding to the temperature of the welding probe, the accuracy of detection can be improved.

[0147] In some embodiments, as shown in FIG6 , the method for controlling the welding equipment may further include steps S601 and S602:

[0148] Step S601 : When the heat sealing controller is in an abnormal state after welding, state information indicating that the heat sealing controller is in an abnormal state is stored.

[0149] In an embodiment of the present disclosure, when the heat sealing controller is in an abnormal state after welding, status information for characterizing that the heat sealing controller is in an abnormal state can be stored first. The status information carries a timestamp of the heat sealing controller being in the abnormal state, as well as abnormal information of the heat sealing controller. The abnormal information can represent the temperature information of the heat sealing controller after welding.

[0150] Step S602: When the heat sealing controller is in a normal state, the state information is reset.

[0151] In an embodiment of the present disclosure, after the operator is prompted by an abnormal alarm message that the heat sealing controller is in an abnormal state after welding, the operator can perform manual intervention. If it is determined that the heat sealing controller is in a normal state, the above-mentioned stored status information can be reset to indicate that the heat sealing controller is in a normal state.

[0152] In some embodiments, when the heat sealing controller is in an abnormal state before welding and when the heat sealing controller is in an abnormal state after welding, the above steps S601 and S602 may be performed.

[0153] In the disclosed embodiment, if the heat seal controller enters an abnormal state after welding, an abnormality alarm message is sent. This provides a timely notification to the operator, allowing them to intervene in the heat seal controller. Status information indicating the heat seal controller is in an abnormal state is stored; when the heat seal controller is in a normal state, this status information is reset. By storing this status information, abnormalities in the heat seal controller can be monitored at any time, and when the heat seal controller is in a normal state, the status information can be reset, thus reducing the need for repeated interventions.

[0154] FIG7 is a seventh flow chart of a method for controlling a welding device according to an embodiment of the present disclosure. As shown in FIG7 , the method for controlling a welding device can also be implemented through steps S701 to S707:

[0155] Step S701, controlling the heat sealing controller to start the heat sealing state.

[0156] In the disclosed embodiment, when a battery to be welded is placed under the welding device, the controller can control the heat sealing controller to initiate the heat sealing state. Here, the heat sealing controller in the heat sealing state does not control the welding probe to enter the heating state; it only causes the heat sealing controller in the standby state to change to the heat sealing preparation state.

[0157] Step S702: trigger a timer.

[0158] Step S703: After the timer has expired for a second preset time, the temperature of the welding probe before welding is obtained, and the temperature before welding is compared with the first heat sealing upper limit temperature.

[0159] Step S704: When the temperature before welding is greater than the first heat-sealing upper limit temperature, an alarm message is output.

[0160] Step S705 , comparing the temperature before welding with the first heat sealing lower limit temperature.

[0161] Step S706: When the temperature before welding is less than or equal to the first heat sealing lower limit temperature, output an alarm message.

[0162] Step S707: Control the heat sealing controller to turn off the heat sealing state.

[0163] In the disclosed embodiments, before welding the battery to be welded, the temperature of the welding probe before welding can be obtained to determine whether the heat seal controller is abnormal. If the temperature before welding exceeds the lower limit or the upper limit, the heat seal controller is determined to be abnormal and an alarm is issued in a timely manner. In this way, it is possible to detect whether the heat seal controller is abnormal before welding, reducing the possibility of unqualified battery welds due to abnormal welding equipment, thereby reducing the production time and economic costs of battery welding.

[0164] FIG8 is a flowchart of an implementation method of a welding device control method according to an embodiment of the present disclosure. As shown in FIG8 , the above-mentioned welding device control method can also be implemented through steps S801 to S803:

[0165] Step S801: When the temperature of the welding probe in a heated state without contacting the battery is greater than the second heat-sealing upper limit temperature, or less than or equal to the second heat-sealing lower limit temperature, an alarm is triggered.

[0166] Step S802: output alarm information.

[0167] Step S803: Save the abnormal state information of the heat sealing controller, and reset the abnormal state information after the heat sealing controller returns to normal.

[0168] In the disclosed embodiment, the status of the heat seal controller can be determined by the temperature of the welding probe in a heated state when not in contact with the battery. If an abnormality in the heat seal controller is detected, an alarm can be promptly issued. This minimizes the possibility of heat seal controller abnormalities being detected while the welding probe is welding the battery to be welded, thereby reducing the time and economic costs of the battery production process.

[0169] FIG9 is a ninth flowchart of a method for controlling a welding device according to an embodiment of the present disclosure. As shown in FIG9 , the method for controlling a welding device can also be implemented through steps S901 to S903:

[0170] Step S901 , determining whether the temperature of the welding probe in a heated state when it contacts the battery is within a heat sealing temperature range.

[0171] Step S902: When the temperature of the welding probe in the heated state when it contacts the battery is not within the heat sealing temperature range, an alarm message is output.

[0172] Step S903: Save the abnormal state information of the heat sealing controller, and reset the abnormal state information after the heat sealing controller returns to normal.

[0173] In the disclosed embodiment, the temperature of the heated welding probe when it contacts the battery can be used to determine the status of the heat seal controller, and a timely alarm can be issued if an abnormality in the heat seal controller is determined. Thus, the temperature of the welding probe can accurately determine whether the heat seal controller is in a normal state during the welding process. When an abnormality in the heat seal controller occurs, welding can be stopped promptly, thereby reducing the risk of battery damage caused by the abnormality.

[0174] FIG10 is a schematic diagram of a tenth implementation flow of a method for controlling a welding device provided by an embodiment of the present disclosure. As shown in FIG10 , the method for controlling a welding device can also be implemented through steps S1001 to S1005:

[0175] Step S1001, triggering a timer.

[0176] Step S1002: After the timer has elapsed a first preset time, the temperature of the welding probe after welding is obtained, and it is determined whether the temperature of the welding probe after welding is greater than a third heat sealing upper limit temperature.

[0177] Step S1003 , determining whether the temperature of the welding probe after welding is less than the third heat-sealing upper limit temperature.

[0178] Step S1004: Outputting an alarm message when the temperature of the welding probe after welding is greater than the third heat-sealing upper limit temperature, or when the temperature of the welding probe after welding is less than the third heat-sealing upper limit temperature.

[0179] Step S1005 , saving abnormal status information of the heat sealing controller, and resetting the abnormal status information after the heat sealing controller returns to normal.

[0180] In the disclosed embodiment, the temperature of the welding probe after welding can be used to determine the status of the heat seal controller, and an alarm can be promptly issued if an abnormality is detected in the heat seal controller. Thus, the temperature of the welding probe after welding can accurately determine whether the heat seal controller is in a normal state after welding. Therefore, if an abnormality occurs in the heat seal controller, the battery can be promptly inspected after welding, thereby reducing the occurrence of poor welding quality outages.

[0181] FIG11 is a schematic diagram of the structure of a device for controlling welding equipment provided by an embodiment of the present disclosure. As shown in FIG11 , the device 1100 for controlling welding equipment includes: a temperature acquisition unit 1101, a control unit 1102, and a state determination unit 1103, wherein:

[0182] a temperature acquisition unit 1101 configured to acquire the temperature of the welding probe before welding via the heat sealing controller in response to the battery to be welded being under the welding device;

[0183] The control unit 1102 is configured to control the welding probe to be in a heating state through the heat sealing controller when it is determined that the heat sealing controller is in a normal state before welding based on the temperature before welding;

[0184] The temperature acquisition unit 1101 is further configured to acquire the temperature of the welding probe after welding through the heat sealing controller when the welding probe in the heated state completes welding the battery to be welded;

[0185] The state determining unit 1103 is configured to determine whether the heat sealing controller is in a normal state after welding based on the temperature after welding.

[0186] In some embodiments, the welding probe is a hot melt welding probe; the battery to be welded is a bare cell; the control unit 1102 is further configured to control the hot melt welding probe through the heat sealing controller to perform hot melt welding on the insulating film and the top cover of the bare cell, and on the bottom support of the bare cell, respectively, when the welding probe is in a heated state.

[0187] In some embodiments, the temperature acquisition unit 1101 is further configured to send a temperature acquisition control signal to the heat sealing controller after a first preset time in response to the battery to be welded being under the welding equipment; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature before welding; and receive the temperature before welding sent by the heat sealing controller.

[0188] In some embodiments, the control unit 1102 is further configured to determine that the heat sealing controller is in a normal state before welding when the temperature before welding is within the room temperature range; and to send a start signal to the heat sealing controller when the heat sealing controller is in a normal state before welding; and the heat sealing controller is configured to control the welding probe to be in a heating state in response to the start signal.

[0189] In some embodiments, the temperature acquisition unit 1101 is further configured to acquire the temperature of the welding probe during welding through the heat sealing controller when the welding probe is in the heating state; the state determination unit 1103 is further configured to determine whether the heat sealing controller is in a normal state during welding based on the temperature of the welding probe during welding; the temperature acquisition unit 1101 is further configured to acquire the temperature of the welding probe after welding through the heat sealing controller when it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded.

[0190] In some embodiments, the temperature acquisition unit 1101 is further configured to acquire the temperature of the welding probe in the first stage through the heat sealing controller when the welding probe is in the first stage; the state determination unit 1103 is further configured to determine whether the heat sealing controller is in a normal state based on the temperature of the first stage; the first stage is used to indicate that the welding probe has been heated but has not contacted the battery to be welded; the control unit 1102 is further configured to control the welding probe to enter the second stage through the heat sealing controller when it is determined that the heat sealing controller is in a normal state; wherein the second stage is used to indicate that the welding probe has been heated and the battery to be welded is welded; the temperature acquisition unit 1101 is further configured to acquire the temperature of the welding probe in the second stage through the heat sealing controller when the welding probe is in the second stage.

[0191] In some embodiments, the state determination unit 1103 is further configured to determine that the heat sealing controller is in a normal state during welding when the temperature of the welding probe in the second stage is within a preset temperature range; the temperature acquisition unit 1101 is further configured to send a temperature acquisition control signal to the heat sealing controller after a second preset time when the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature after welding; and receive the temperature after welding sent by the heat sealing controller.

[0192] In some embodiments, the device 1100 for controlling the welding equipment further includes: an alarm unit and an image acquisition unit; the alarm unit is configured to send an abnormal alarm message when the heat sealing controller is in an abnormal state after welding; the image acquisition unit is configured to acquire a welding image of the battery to be welded when the heat sealing controller is in an abnormal state after welding; the defect determination unit is further configured to detect the welding area in the welding image to determine whether there is a defect in the welding area.

[0193] In some embodiments, the defect determination unit is further configured to, when the temperature of the welding probe is less than the lower limit of the temperature range, perform a weld leak defect detection on the welding area in the welding image to obtain the detection result; and when the temperature of the welding probe is greater than the upper limit of the temperature range, perform an weld leak defect detection on the welding area in the welding image to obtain the detection result.

[0194] The description of the above device embodiment is similar to the description of the above method embodiment and has similar beneficial effects as the method embodiment. In some embodiments, the functions or modules included in the device provided by the embodiment of the present disclosure can be used to perform the method described in the above method embodiment. For technical details not disclosed in the device embodiment of the present disclosure, please refer to the description of the method embodiment of the present disclosure for understanding.

[0195] It should be noted that, in the embodiments of the present disclosure, if the above-mentioned data processing method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods of each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiments of the present disclosure are not limited to any specific hardware, software or firmware, or any combination of hardware, software and firmware.

[0196] An embodiment of the present disclosure provides a computer device including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and when the processor executes the program, some or all of the steps in the above method are implemented.

[0197] The present disclosure provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements some or all of the steps in the above method. The computer-readable storage medium may be transient or non-transient.

[0198] An embodiment of the present disclosure provides a computer program, including computer-readable codes. When the computer-readable codes are executed in a computer device, a processor in the computer device executes some or all of the steps for implementing the above method.

[0199] The present disclosure provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program. When the computer program is read and executed by a computer, some or all of the steps in the above method are implemented. The computer program product can be implemented in hardware, software, or a combination thereof. In some embodiments, the computer program product is embodied as a computer storage medium. In other embodiments, the computer program product is embodied as a software product, such as a software development kit (SDK).

[0200] It should be noted that the descriptions of the various embodiments above tend to emphasize the differences between the various embodiments, and their similarities or similarities can be referenced to each other. The descriptions of the above device, storage medium, computer program, and computer program product embodiments are similar to the descriptions of the above method embodiments and have similar beneficial effects as the method embodiments. For technical details not disclosed in the embodiments of the device, storage medium, computer program, and computer program product of this application, please refer to the description of the method embodiments of this application for understanding.

[0201] FIG12 is a schematic diagram of a hardware entity of a device for controlling welding equipment according to an embodiment of the present disclosure. As shown in FIG12 , the hardware entity of the device 1200 for controlling welding equipment includes: a processor 1201, a communication interface 1202, and a memory 1203, wherein:

[0202] The processor 1201 generally controls the overall operation of the device 1200 for controlling the welding device. The overall operation may be to implement the method for controlling the welding device provided in the embodiment of the present disclosure, for example, the method shown in FIG. 1 to FIG. 10 .

[0203] The communication interface 1202 enables the computer device to communicate with other terminals or servers through a network.

[0204] The memory 1203 is configured to store instructions and applications executable by the processor 1201. It can also cache data to be processed or processed by the processor 1201 and the various modules in the device 1200 for controlling the welding device (e.g., image data, audio data, voice communication data, and video communication data). This can be implemented using flash memory (FLASH) or random access memory (RAM). Data can be transmitted between the processor 1201, the communication interface 1202, and the memory 1203 via a bus 1204.

[0205] An embodiment of the present disclosure provides a computer storage medium storing one or more programs, which can be executed by one or more processors to implement the steps of the method for controlling welding equipment as described in any of the above embodiments.

[0206] It should be noted that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of the present disclosure, please refer to the description of the embodiments of the present disclosure for understanding.

[0207] The processor may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic device that implements the functions of the processor may also be other electronic devices, which are not specifically limited in the embodiments of the present disclosure.

[0208] The above-mentioned computer storage medium / memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); it can also be various terminals including one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0209] It should be understood that "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, 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 application. The above-mentioned serial numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0210] 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.

[0211] The above is only an implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in this application, which should be covered by the scope of protection of the present application.

Claims

1. A method for controlling a welding device, the welding device comprising a heat seal controller and a welding probe; the welding probe being a hot melt welding probe; the method comprising: In response to a battery to be welded being under the welding device, obtaining, by the heat sealing controller, a temperature of the welding probe before welding; In a case where it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding, controlling the welding probe to be in a heating state by the heat sealing controller; When the welding probe in the heated state completes welding the battery to be welded, obtaining the temperature of the welding probe after welding by the heat sealing controller; determining whether the heat seal controller is in a normal state after welding based on the temperature after welding; Wherein, whether the heat sealing controller is in a normal state before welding and whether the heat sealing controller is in a normal state after welding are determined based on a room temperature range.

2. The method for controlling welding equipment according to claim 1, wherein: The battery to be welded is a bare cell; the method for controlling the welding equipment further includes: When the welding probe is in a heated state, the heat sealing controller controls the hot melt welding probe to perform hot melt welding on the insulating film and the top cover of the bare battery cell, and on the insulating film and the bottom support of the bare battery cell respectively.

3. The method for controlling welding equipment according to claim 1 or 2, wherein: In response to the battery to be welded being under the welding device, obtaining the temperature of the welding probe before welding by the heat sealing controller includes: In response to the battery to be welded being under the welding device, a temperature acquisition control signal is sent to the heat sealing controller after a first preset time; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature before welding; Receive the temperature before welding sent by the heat sealing controller.

4. The method for controlling welding equipment according to claim 3, wherein: The method of controlling the welding probe to be in a heating state by the heat sealing controller when it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding comprises: In the case where the temperature before welding is within the room temperature range, determining that the heat sealing controller is in a normal state before welding; When the heat sealing controller is in a normal state before welding, an opening signal is sent to the heat sealing controller; the heat sealing controller is used to control the welding probe to be in a heating state in response to the opening signal.

5. The method for controlling welding equipment according to claim 4, wherein: The method further comprises: During the welding process of the welding probe in the heating state, the temperature of the welding probe during welding is obtained by the heat sealing controller; When the welding probe in the heated state completes welding the battery to be welded, obtaining the temperature of the welding probe after welding by the heat sealing controller includes: determining whether the heat sealing controller is in a normal state during welding based on the temperature of the welding probe during welding; When it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, the temperature of the welding probe after welding is obtained through the heat sealing controller.

6. The method for controlling welding equipment according to claim 5, wherein: The method of obtaining the temperature of the welding probe during welding by the heat sealing controller when the welding probe is in the heating state includes: When the welding probe is in the first stage, obtaining, by the heat sealing controller, a temperature of the welding probe in the first stage, and determining whether the heat sealing controller is in a normal state based on the temperature in the first stage; The first stage is used to indicate that the welding probe has been heated but has not yet contacted the battery to be welded; When it is determined that the heat sealing controller is in a normal state, the heat sealing controller controls the welding probe to enter a second stage; wherein the second stage is used to indicate that the welding probe has been heated and the battery to be welded has been welded; When the welding probe is in the second stage, the temperature of the welding probe in the second stage is obtained by the heat sealing controller.

7. The method for controlling welding equipment according to claim 6, wherein: The determining whether the heat sealing controller is in a normal state during welding based on the temperature of the welding probe during welding includes: When the temperature of the welding probe in the second stage is within a preset temperature range, determining that the heat sealing controller is in a normal state during welding; The method of obtaining the temperature of the welding probe after welding by the heat sealing controller when it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded includes: When the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded, after a second preset time, a temperature acquisition control signal is sent to the heat sealing controller; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature after welding; Receive the post-welding temperature sent by the heat sealing controller.

8. The method for controlling welding equipment according to claim 7, wherein: The method for controlling welding equipment further comprises: When the heat sealing controller is in an abnormal state after or during welding, sending an abnormal alarm message and acquiring a welding image of the battery to be welded; The welding area in the welding image is inspected to obtain an inspection result; the inspection result is used to indicate whether there is a defect in the welding area.

9. The method for controlling welding equipment according to claim 8, wherein: The detecting the welding area in the welding image to obtain a detection result includes: When the temperature of the welding probe is lower than a lower limit of a temperature range, performing welding leak defect detection on the welding area in the welding image to obtain the detection result; When the temperature of the welding probe is greater than an upper limit of a temperature range, an over-welding defect detection is performed on the welding area in the welding image to obtain the detection result.

10. A device for controlling welding equipment, the welding equipment comprising a heat seal controller and a welding probe; the welding probe being a hot melt welding probe; the device for controlling the welding equipment comprising: a temperature acquisition unit configured to acquire the temperature of the welding probe before welding via the heat sealing controller in response to the battery to be welded being under the welding device; a control unit configured to control the welding probe to be in a heating state through the heat sealing controller when it is determined based on the temperature before welding that the heat sealing controller is in a normal state before welding; The temperature acquisition unit is further configured to acquire the temperature of the welding probe after welding through the heat sealing controller when the welding probe in the heated state completes welding the battery to be welded; a state determining unit configured to determine whether the heat sealing controller is in a normal state after welding based on the temperature after welding; Wherein, whether the heat sealing controller is in a normal state before welding and whether the heat sealing controller is in a normal state after welding are determined based on a room temperature range.

11. The device for controlling welding equipment according to claim 10, wherein: The battery to be welded is a bare cell; The control unit is configured to control the heat sealing when the welding probe is in a heated state. The device controls the hot melt welding probe to perform hot melt welding on the insulating film and the top cover of the bare battery cell, and on the insulating film and the bottom support of the bare battery cell respectively.

12. The device for controlling welding equipment according to claim 11, wherein: The temperature acquisition unit is further configured to send a temperature acquisition control signal to the heat sealing controller after a first preset time in response to the battery to be welded being under the welding equipment; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature before welding; and receive the temperature before welding sent by the heat sealing controller.

13. The device for controlling welding equipment according to claim 12, wherein: The control unit is further configured to, when the temperature before welding is within the room temperature range, determine that the heat sealing controller is in a normal state before welding; when the heat sealing controller is in a normal state before welding, send an open signal to the heat sealing controller; the heat sealing controller is used to control the welding probe to be in a heating state in response to the open signal.

14. The device for controlling welding equipment according to claim 13, wherein: The temperature acquisition unit is further configured to, when the welding probe is in the heating state and is in the welding process, acquire the temperature of the welding probe during welding through the heat sealing controller; determine whether the heat sealing controller is in a normal state during welding based on the temperature of the welding probe during welding; and acquire the temperature of the welding probe after welding through the heat sealing controller when it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded.

15. The device for controlling welding equipment according to claim 14, wherein: The temperature acquisition unit is further configured to, when the welding probe is in the first stage, acquire the temperature of the welding probe in the first stage through the heat sealing controller, and determine whether the heat sealing controller is in a normal state based on the temperature of the first stage; wherein, the first stage is used to indicate that the welding probe has been heated but has not contacted the battery to be welded; when it is determined that the heat sealing controller is in a normal state, control the welding probe to enter the second stage through the heat sealing controller; wherein, the second stage is used to indicate that the welding probe has been heated and the battery to be welded is welded; when the welding probe is in the second stage, acquire the temperature of the welding probe in the second stage through the heat sealing controller.

16. The device for controlling welding equipment according to claim 15, wherein: The state determination unit is further configured to determine that the heat sealing controller is in a normal state during welding if the temperature of the welding probe in the second stage is within a preset temperature range; The method of obtaining the temperature of the welding probe after welding by the heat sealing controller when it is determined that the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded includes: The temperature acquisition unit is further configured to send a temperature acquisition control signal to the heat sealing controller after a second preset time when the heat sealing controller is in a normal state during welding and the welding probe completes welding the battery to be welded; the temperature acquisition control signal is used to control the heat sealing controller to obtain the temperature after welding; and receive the temperature after welding sent by the heat sealing controller.

17. The device for controlling welding equipment according to claim 16, wherein: The device for controlling the welding equipment further comprises: an alarm unit and an image acquisition unit; The alarm unit is configured to send abnormal alarm information and obtain a welding image of the battery to be welded when the heat sealing controller is in an abnormal state after or during welding; The image acquisition unit is configured to detect the welding area in the welding image to obtain a detection result; the detection result is used to indicate whether there is a defect in the welding area.

18. A device for controlling a welding device, comprising: a memory for storing executable instructions; The processor is configured to implement the steps of the method for controlling welding equipment according to any one of claims 1 to 9 when executing the executable instructions stored in the memory.

19. A computer-readable storage medium having executable instructions stored thereon, wherein when the executable instructions are executed by a processor, the steps of the method for controlling welding equipment according to any one of claims 1 to 9 are implemented.

20. A computer program product comprising a computer program or instructions, wherein when the computer program or instructions are executed by a processor, the steps of the method for controlling welding equipment according to any one of claims 1 to 9 are implemented.

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