Bolt welding method, device and system for battery cover

Abstract

The invention discloses a bolt welding method, device and system for a battery cover, and belongs to the technical field of welding. The bolt welding method for the battery cover can comprise the steps that a target welding parameter combination matched with a current battery cover and a current to-be-welded bolt is determined according to a first incidence relation among multiple battery cover specifications, multiple bolt specifications and multiple sets of welding parameter combinations, wherein the first incidence relation is configured according to a preset welding strategy; and distributing the current to-be-welded bolt to target welding equipment matched with the target welding parameter combination according to a second association relationship between multiple groups of welding parameter combinations configured by a preset welding strategy and multiple welding equipment, so that the current to-be-welded bolt is welded after the current battery cover is moved to the target welding equipment. And the target welding equipment is made to weld the current to-be-welded bolt to the specific position of the current battery cover according to the target welding parameter combination. The bolt welding method can effectively improve the welding yield of the battery cover so as to improve the reliability of the battery cover.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a bolt welding method, device and system for a battery cover. BACKGROUND

[0002] For new energy vehicles, the battery cover of the vehicle battery generally needs to weld bolts of different specifications to meet the assembly requirements of the battery cover. At present, the same welding equipment is generally used to weld bolts of different specifications, and the welding equipment has relatively optimal process conditions, but the relatively optimal process conditions are not suitable for all specifications of the bolts. Therefore, the existing use of the same welding equipment to weld bolts of different specifications for the battery cover is prone to welding defects, resulting in a low welding yield of the battery cover. SUMMARY

[0003] Therefore, the present application provides a bolt welding method, device and system for a battery cover, which uses different welding equipment to complete welding under relatively optimal welding parameters for battery covers of different specifications and bolts of different specifications, thereby effectively improving the welding yield of the battery cover and improving the reliability of the battery cover.

[0004] To solve the above technical problems, the present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a bolt welding method for a battery cover, comprising:

[0006] determining a target welding parameter combination matched to a current battery cover and a current bolt to be welded from a first association relationship between a plurality of battery cover specifications, a plurality of bolt specifications and a plurality of welding parameter combinations configured by a preset welding strategy;

[0007] allocating the current bolt to be welded to a target welding device matched to the target welding parameter combination from a second association relationship between the plurality of welding parameter combinations configured by the preset welding strategy and a plurality of welding devices, so that the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination after the current battery cover is moved to the target welding device.

[0008] Optionally, the bolt welding method for the battery cover further comprises:

[0009] statistically determining a plurality of battery cover specifications, a plurality of bolt specifications and a plurality of historical welding parameter combinations corresponding to each of the battery cover specifications and each of the bolt specifications from historical welding data;

[0010] configuring a first association relationship and a second association relationship for the welding strategy according to the plurality of historical welding parameter combinations and welding parameter ranges of the plurality of welding devices.

[0011] Optionally, the configuring the first association relationship and the second association relationship for the welding strategy comprises:

[0012] For each of a plurality of specification combinations of a plurality of battery cover specifications and a plurality of bolt specifications, the following operations are performed:

[0013] From the statistical results, a plurality of groups of historical welding parameter combinations related to the specification combination are screened out;

[0014] According to the plurality of groups of historical welding parameter combinations related to the specification combination, a plurality of groups of welding experiment parameter combinations are generated for the specification combination, and each group of the welding experiment parameter combinations includes welding experiment parameters corresponding to a plurality of welding control indicators;

[0015] According to the welding parameter range of a plurality of welding devices, one or more experimental welding devices are screened out for the specification combination, so that each of the experimental welding devices uses a plurality of welding experiment parameters included in the welding experiment parameter combination to weld an experimental bolt corresponding to the bolt specification in the specification combination to an experimental battery cover corresponding to the battery cover specification in the specification combination;

[0016] According to the welding evaluation results of each of the specification combinations and each of the experimental welding devices, a first association relationship and a second association relationship are configured for the welding strategy.

[0017] Optionally, the screening out one or more experimental welding devices for the specification combination comprises:

[0018] Based on each group of welding experiment parameter combinations corresponding to the specification combination, the following operations are performed:

[0019] An experimental welding device matched with a welding experiment pressure included in the welding experiment parameter combination is selected for the specification combination.

[0020] Optionally, the welding parameter combination includes a plurality of welding pressure, welding time, welding voltage and welding current.

[0021] Optionally, the bolt welding method for a battery cover further comprises:

[0022] According to the target welding parameter combination, an operation instruction is generated and sent to the target welding device, so that the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the operation instruction.

[0023] Optionally, the current battery cover is a battery upper cover, and the bolt welding method further comprises: welding the current bolt to be welded to the battery upper cover by the target welding device in a resistance welding manner.

[0024] Preferably, the battery upper cover comprises: a steel plate and a nickel-zinc electroplated coating layer arranged on the steel plate.

[0025] Optionally, the battery upper cover further comprises: a positioning plate welded to the inner side of the battery upper cover, the positioning plate being used for positioning and limiting the electrode of the vehicle battery.

[0026] The current bolt to be welded is welded to the outer side of the battery upper cover, and the welding position of the current bolt to be welded overlaps with the welding position of the positioning plate.

[0027] In a second aspect, an embodiment of the present application provides a bolt welding device for a battery cover, comprising: a parameter determination module and a distribution module, wherein,

[0028] The parameter determination module is configured to determine a target welding parameter combination matched to a current battery cover and a current bolt to be welded from a first association relationship among a plurality of battery cover specifications, a plurality of bolt specifications and a plurality of welding parameter combinations configured by a preset welding strategy.

[0029] The distribution module is configured to distribute the current bolt to be welded to a target welding device matched to the target welding parameter combination from a second association relationship among a plurality of welding parameter combinations configured by the preset welding strategy and a plurality of welding devices, so that the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination after the current battery cover is moved to the target welding device.

[0030] In a third aspect, an embodiment of the present application provides a bolt welding system for a battery cover, comprising: a plurality of welding devices, a bolt storage device and the bolt welding device for the battery cover provided by the second aspect, wherein,

[0031] The bolt storage device stores bolts of a plurality of specifications.

[0032] The bolt welding device determines a target welding device for the current battery cover and the current bolt to be welded from the plurality of welding devices, and distributes the current bolt to be welded stored in the bolt storage device to the target welding device.

[0033] The target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

[0034] The technical solution of the first aspect of the above-mentioned application has the following advantages or beneficial effects:

[0035] The technical scheme provided by the embodiment of the present application can match a better target welding parameter combination for the current battery cover and the current bolt to be welded through the first association relationship between the multiple battery cover specifications, the multiple bolt specifications and the multiple sets of welding parameter combinations configured for the welding strategy, and can further allocate a better target welding device matched with the target welding parameter combination to the current bolt to be welded through the second association relationship between the multiple sets of welding parameter combinations configured for the welding strategy and the multiple welding devices, so that the current bolt to be welded can be better welded to the specific position of the current battery cover under the target welding parameter combination using the target welding device, the welding yield of the battery cover is improved, and the reliability of the battery cover is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a schematic diagram of an automatic welding system architecture for a battery cover according to an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the main process of a bolt welding method for a battery cover according to an embodiment of the present application;

[0038] Figure 3 is a schematic diagram of the main process of obtaining the first association relationship and the second association relationship according to an embodiment of the present application;

[0039] Figure 4 is a schematic diagram of a partial cross-sectional structure of a battery upper cover according to an embodiment of the present application;

[0040] Figure 5 is a schematic diagram of the main process of a bolt welding method for a battery cover according to another embodiment of the present application;

[0041] Figure 6 is a schematic diagram of the structure of a bolt welding device for a battery cover according to an embodiment of the present application;

[0042] Figure 7 is a schematic diagram of the structure of a bolt welding system for a battery cover according to an embodiment of the present application;

[0043] Figure 8 is a schematic diagram of the structure of a computer system of a bolt welding method or device for a battery cover according to an embodiment of the present application. DETAILED DESCRIPTION

[0044] Exemplary embodiments of the present application are described herein with reference to the accompanying drawings, which are meant to be exemplary in nature, and include various specific details to facilitate understanding, and are to be considered in the context of the entire description. One skilled in the art will realize that various changes and modifications can be made to the embodiments described herein, and such changes and modifications are considered to fall within the scope and spirit of the present application. Also, for the purpose of clarity and the brevity of the description, the description below omits the description of well-known functions and structures.

[0045] It should be noted that the embodiments of the present application and the technical features in the embodiments can be combined with each other without conflict.

[0046] Since the battery cover made of different materials has different welding capability, different welding parameters are required to form a stable welding connection with the bolt. For example, the battery cover with a tin plating layer has relatively strong welding capability, and only the welding temperature capable of melting the tin plating layer and a small welding pressure are required to stably weld the bolt to the battery cover with the tin plating layer. For example, for the battery cover with relatively thin thickness, a shorter welding time is required to avoid the battery cover being welded through. Because different welding parameters and welding equipment are used for different specifications of battery covers and different specifications of bolts, the welding yield and reliability of the battery cover are improved.

[0047] In order to intelligently use different welding parameters and welding equipment for different specifications of battery covers and different specifications of bolts, the embodiments of the present application provide a bolt welding method, device and system for a battery cover.

[0048] Specifically, Figure 1 The bolt welding method for a battery cover provided by the embodiments of the present application is shown. Specifically, as shown in Figure 1 The bolt welding method for a battery cover provided by the embodiments of the present application is shown. Specifically, as shown in

[0049] Specifically, the control device 101 is generally configured to coordinate the work between the bolt storage device 102 and the plurality of types of welding devices 103, and send control instructions to the bolt storage device 102 and the plurality of types of welding devices 103, and the bolt storage device 102 and the plurality of types of welding devices 103 work according to the control instructions. The control device 101 can be a server, or a terminal device such as a computer, a device operation platform, etc.

[0050] The bolt storage device 102 is used for storing bolts B. Different specifications of bolts B can be placed in different areas of one bolt storage device 102, or can be classified and stored in different bolt storage devices 102. Therefore, the bolt storage device 102 can be one or more.

[0051] Further, the bolt storage device 102 can be provided with a bolt outlet. The control device 101 opens the bolt outlet switch to make the bolts B enter the bolt transmission channel from the bolt outlet. In addition, the control device 101 closes the bolt outlet switch to block the transmission of the bolts B.

[0052] In addition, the bolt outlet of the bolt storage device 102 is communicated with one or more types of welding devices 103 through a conveying pipeline, so as to convey the bolts B to the welding devices 103 through the conveying pipeline. The welding devices 103 place the bolts B in corresponding bolt placement positions. Then, the control device 101 controls a mechanical arm (not shown in the figure) to clamp the battery cover C and place the welding position at the position where the bolts B are placed in the welding device 103. The control device 101 sends a welding instruction to the welding device 103. The welding device 103 welds the bolts B to the specific position of the battery cover C according to the welding instruction and specific welding parameters.

[0053] It should be understood that the above components are only an example. In actual application, components in each device or system can be added or deleted according to actual needs, Figure 1 It should not be understood as a limitation on the embodiments of the present application.

[0054] In addition, the bolt welding method for the battery cover provided by the embodiments of the present application mainly involves developing an application program. By loading the application program on the control device 101, in addition to coordinating and controlling the bolt storage device 102 and the welding device 103, the appropriate welding device 103 can also be selected for different specifications of battery covers and different specifications of bolts. The welding parameters of the welding device 103 are configured to match the specifications of the battery cover and the specifications of the bolts.

[0055] Specifically, Figure 2 A main flowchart of a bolt welding method for a battery cover provided by the embodiments of the present application is shown. As shown in Figure 2 The bolt welding method for the battery cover can include the following steps:

[0056] Step S201: determining a target welding parameter combination matched to the current battery cover and the current bolt to be welded from a first association relationship between a plurality of battery cover specifications, a plurality of bolt specifications and a plurality of welding parameter combinations configured by a preset welding strategy.

[0057] The battery cover specifications mainly include battery cover material (such as steel plate or steel plate with an electroplated layer on the outer side), battery cover thickness, battery cover temperature resistance, etc., and the bolt specifications mainly include bolt material, bolt size (such as bolt diameter for welding a nut), bolt type (such as M8 bolt, M6 bolt, etc.), etc.

[0058] Generally, in the first correlation relationship, one battery cover specification and one bolt specification combination correspond to one set of welding parameter combination. The first correlation relationship as completely as possible contains different battery cover specifications, different bolt specifications, and welding parameter combinations corresponding to any combination of different battery cover specifications and different bolt specifications to meet different welding requirements.

[0059] In step S202, from the second correlation relationship between the multiple sets of welding parameter combinations configured by the welding strategy and the multiple welding devices, the current bolt to be welded is assigned to a target welding device matched with the target welding parameter combination, so that after the current battery cover is moved to the target welding device, the target welding device welds the current bolt to be welded to the specific position of the current battery cover according to the target welding parameter combination.

[0060] Since each welding device has its most suitable working range, the target welding device matched with the target welding parameter combination means that the welding parameters contained in the target welding parameter combination are within the optimal working range of the target welding device, so as to ensure the welding quality and welding process stability.

[0061] The welding parameter combination can include multiple welding parameters such as welding pressure, welding time, welding voltage, and welding current. Preferably, the welding parameter combination includes welding pressure, welding time, and welding current, and more preferably, the welding parameter combination includes welding pressure, welding time, welding voltage, and welding current. By adjusting the welding parameter combination, the welding quality and welding process stability can be ensured, and the risk of battery cover damage caused by welding can be reduced.

[0062] For the above problems, the technical scheme provided by the present application is characterized in that a first correlation relationship is established among multiple battery cover specifications, multiple bolt specifications, and multiple sets of welding parameter combinations configured by a welding strategy, so as to match a relatively optimal target welding parameter combination for a current battery cover and a current bolt to be welded. Figure 2 The technical scheme provided by the present application is characterized in that a first correlation relationship is established among multiple battery cover specifications, multiple bolt specifications, and multiple sets of welding parameter combinations configured by a welding strategy, so as to match a relatively optimal target welding parameter combination for a current battery cover and a current bolt to be welded.

[0063] Further, the technical scheme provided by the embodiment of the present application can guarantee the tensile strength and corrosion resistance of the welding root, so that the bolt assembled on the battery cover has no risk of falling during long-term use, and the welding scheme can make the welding position have strong corrosion resistance and tensile strength in different environments.

[0064] In addition, the technical scheme provided by the embodiment of the present application can select appropriate welding equipment according to welding requirements, thereby better optimizing equipment costs.

[0065] The first and second association relationships are the basis for matching different welding parameters and selecting appropriate welding equipment for different specifications of battery covers and different specifications of bolts. In order to obtain the first and second association relationships, the bolt welding method for the battery cover can further include: from historical welding data, a plurality of battery cover specifications, a plurality of bolt specifications, and a plurality of sets of historical welding parameter combinations corresponding to each battery cover specification and each bolt specification are counted; according to the plurality of sets of historical welding parameter combinations and the welding parameter ranges of the plurality of welding equipment, the first and second association relationships are configured for the welding strategy. The historical welding data can be derived from different welding parameters of different welding equipment for various specifications of battery covers and various specifications of bolts. The historical welding data can be real welding data generated by a welding process, welding data generated during debugging of a welding process, welding experimental data generated during an experimental welding process, or the like.

[0066] More specifically, as shown in Figure 3 The specific implementation scheme of configuring the first and second association relationships for the welding strategy can include: for each of a plurality of specification combinations composed of a plurality of battery cover specifications and a plurality of bolt specifications, the following steps S301 to S304 are performed:

[0067] Step S301: from the statistical results, a plurality of sets of historical welding parameter combinations related to the specification combination are selected.

[0068] A specification combination generally consists of one battery cover specification and one bolt specification. The battery cover specification can include a plurality of battery cover specification parameters such as battery cover material, battery cover thickness, etc. When the battery cover material is constant, different battery cover thicknesses are also different battery cover specifications. A bolt specification generally consists of a thread diameter and a bolt length. Different bolt lengths with the same thread diameter or different thread diameters with the same bolt length all belong to different thread specifications.

[0069] Step S302: according to the plurality of sets of historical welding parameter combinations related to the specification combination, a plurality of sets of welding experimental parameter combinations are generated for the specification combination, and each set of welding experimental parameter combination includes welding experimental parameters corresponding to a plurality of welding control indexes.

[0070] The plurality of sets of welding experiment parameter combinations includes a plurality of sets of historical welding parameter combinations related to the specification combination and welding extension parameter combinations extended based on the plurality of sets of historical welding parameter combinations, so that the plurality of sets of welding experiment parameter combinations can cover more experimental ranges, so as to determine more optimal first correlation and second correlation for the specification combination in subsequent.

[0071] Step S303: According to the welding parameter range of the plurality of welding equipment, one or more experimental welding equipment is selected for the specification combination, so that each experimental welding equipment uses the plurality of welding experiment parameters included in the welding experiment parameter combination to weld the experimental bolt corresponding to the bolt specification in the specification combination to the experimental battery cover corresponding to the battery cover specification in the specification combination.

[0072] Specifically, for this step S303, the specific implementation of selecting one or more experimental welding equipment for the specification combination can include: based on each set of welding experiment parameter combination corresponding to the specification combination, performing: selecting an experimental welding equipment matched with the welding experiment pressure included in the welding experiment parameter combination for the specification combination. Generally, the welding current range, welding voltage range and controllable welding time range covered by each welding equipment are basically the same, so this step S303 can only match the experimental welding equipment through the welding experiment pressure, that is, it can meet the welding requirements of the specification combination, and can reduce the dimension of selecting the experimental welding equipment, so as to improve the efficiency of selecting the experimental welding equipment and reduce the cost of computing resources.

[0073] Step S304: According to the welding evaluation result of each specification combination and each experimental welding equipment, the first correlation and the second correlation are configured for the welding strategy.

[0074] Wherein, the welding evaluation result of each experimental welding equipment is obtained by detecting the welding quality of the battery cover and the bolt of the specification combination by the detection equipment.

[0075] Based on the welding evaluation result of each experimental welding equipment on the battery cover and the bolt corresponding to the specification combination welded by it, the more optimal first correlation and second correlation can be constructed, so as to further improve the welding quality of the bolt, and improve the welding process stability and reliability, so as to improve the yield of the battery cover.

[0076] Exemplarily, the first association relationship can include: battery cover specification a-bolt specification 2xM8 (i.e. length of 2mm and thread diameter of 8mm)-welding parameter combination (21KN / 104.34KA / 25ms); battery cover specification a-bolt specification 1xM8 (i.e. length of 1mm and thread diameter of 8mm)-welding parameter combination (19KN / 104KA / 25ms); battery cover specification a-bolt specification 19xM6 (i.e. length of 19mm and thread diameter of 6mm)-welding parameter combination (5200N / 18KA / 130ms); battery cover specification a-bolt specification 15.7xM6 (i.e. length of 15.7mm and thread diameter of 6mm)-welding parameter combination (5100N / 16.5KA / 160ms); battery cover specification a-bolt specification 13xM6 (i.e. length of 13mm and thread diameter of 6mm)-welding parameter combination (5100N / 16.5KA / 160ms), etc.

[0077] The second association relationship can include: welding parameter combination (21KN / 104.34KA / 25ms)-welding equipment of 20KN pressure level; welding parameter combination (19KN / 104KA / 25ms)-welding equipment of 20KN pressure level; welding parameter combination (5200N / 18KA / 130ms)-welding equipment of 6KN pressure level; welding parameter combination (5100N / 16.5KA / 160ms)-welding equipment of 6KN pressure level, etc.

[0078] Further, in order to realize the automatic control of the welding equipment, the above-mentioned bolt welding method for the battery cover can further include: generating an operation instruction according to the target welding parameter combination, and sending the operation instruction to the target welding equipment, so that the target welding equipment welds the current bolt to be welded to a specific position of the current battery cover according to the operation instruction. By controlling the target welding equipment through the operation instruction, the overall automatic control of the welding equipment can be realized, the welding quality is improved, and the welding efficiency is improved through automation.

[0079] The battery cover in each of the above-mentioned embodiments can be a battery upper cover or a battery lower cover. Preferably, the current battery cover involved in the embodiments of the present application is a battery upper cover. More preferably, the battery upper cover includes a steel plate and a nickel-zinc electroplated coating layer arranged on the steel plate. For the battery upper cover composed of the steel plate and the nickel-zinc electroplated coating layer, the bolt welding method for the battery cover provided by the above-mentioned embodiments can select a more optimal welding equipment and welding parameter combination to obtain a more optimal welding effect.

[0080] More specifically, based on the above-mentioned Figure 3The second correlation relationship obtained by the embodiment shown is that, for the battery upper cover including the steel plate and the nickel-zinc electroplated layer arranged on the steel plate, the bolt welding method provided by the embodiment of the present application can further include: causing the target welding device to weld the current to-be-welded bolt to the battery upper cover in a resistance welding manner. Figure 3 The second correlation relationship determined by the technical solution provided by the embodiment shown is that, for the battery upper cover including the steel plate and the nickel-zinc electroplated layer arranged on the steel plate, the resistance welding manner can generally obtain a more optimal welding effect.

[0081] More specifically, on the basis of the battery upper cover including the steel plate and the nickel-zinc electroplated layer arranged on the steel plate, the technical solution provided by the embodiment of the present application further determines that Figure 4 The welding manner and the welding parameter combination of the battery upper cover structure shown. As Figure 4 As shown, the battery upper cover C1 includes a positioning plate P welded to the inner side of the battery upper cover C1, which is used to position and limit the electrode of the vehicle battery; the current to-be-welded bolt B1 is welded to the outer side of the battery upper cover C1, and the welding position W1 of the current to-be-welded bolt B1 overlaps the welding position W2 of the positioning plate P. Through the technical solution provided by the embodiment of the present application, the positioning plate P and the bolt can be overlapped and welded, which can ensure the welding quality of the overlapped welding, avoid damage to the battery upper cover, and further avoid the gap between the positioning plate P and the bolt, thereby improving the reliability of the conduction between the positioning plate P and the bolt.

[0082] Next, taking the welding of the bolt B2 with a specification of 21 to the battery cover C2 with a specification of 1 by the welding device E1 and the welding of the bolt B3 with a specification of 22 to the battery cover C3 with a specification of 1 by the welding device E2 as examples, the bolt welding method for the battery cover is described in detail. As Figure 5 The bolt welding method for the battery cover can include the following steps:

[0083] Step S501: The controller K counts a plurality of battery cover specifications, a plurality of bolt specifications, and a plurality of sets of historical welding parameter combinations corresponding to each battery cover specification and each bolt specification from historical welding data.

[0084] Step S502: The controller K selects a plurality of sets of historical welding parameter combinations related to the specification combination from the statistical results for each specification combination in the plurality of specification combinations composed of the plurality of battery cover specifications and the plurality of bolt specifications.

[0085] Step S503: The controller K generates a plurality of sets of welding experiment parameter combinations for the specification combination according to the plurality of sets of historical welding parameter combinations related to the specification combination, and each set of welding experiment parameter combinations includes welding experiment parameters corresponding to a plurality of welding control indexes.

[0086] Step S504: The controller K screens one or more welding devices E1, E2 for the specification combination according to the welding parameter range of the plurality of welding devices.

[0087] Step S505: The welding device E1 / E2 welds the bolt B0 corresponding to the bolt specification in the specification combination to the battery cover C0 corresponding to the battery cover specification in the specification combination by using the plurality of welding experimental parameters included in the welding experimental parameter combination M.

[0088] Step S506: The detection device T evaluates the welding position of the experimental bolt B0 welded to the experimental battery cover C0 and sends the welding evaluation result R to the controller K.

[0089] Step S507: The controller K configures the first association relationship and the second association relationship for the welding strategy according to the welding evaluation result R of each specification combination and each experimental welding device.

[0090] Step S508: The controller K determines the first welding parameter combination M1 matched to the battery cover C2 and the bolt B2 and the second welding parameter combination M2 matched to the battery cover C3 and the bolt B3 from the first association relationship of the preset welding strategy configuration, respectively, and executes Step S509 and Step S511, respectively.

[0091] Step S509: The controller K assigns the bolt B2 to the welding device E1 matched to the first welding parameter combination M1 from the second association relationship of the preset welding strategy configuration, generates an operation instruction, and sends the operation instruction to the welding device E1.

[0092] Step S510: The welding device E1 welds the bolt B2 to the specific position of the battery cover C2 according to the first welding parameter combination M1 indicated by the operation instruction, and ends the current process.

[0093] Step S511: The controller K assigns the bolt B3 to the welding device E2 matched to the second welding parameter combination M2 from the second association relationship of the preset welding strategy configuration, generates an operation instruction, and sends the operation instruction to the welding device E2.

[0094] Step S512: The welding device E2 welds the bolt B3 to the specific position of the battery cover C3 according to the second welding parameter combination M2 indicated by the operation instruction.

[0095] Further, the embodiment of the present application provides a bolt welding device for a battery cover. Specifically, Figure 6 The structure schematic diagram of the bolt welding device for the battery cover provided by the embodiment of the present application is shown. As shown in the figure, Figure 6 The bolt welding device 600 can include a parameter determination module 601 and an assignment module 602, wherein,

[0096] The parameter determination module 601 is configured to determine, from a first association relationship between a plurality of battery cover specifications, a plurality of bolt specifications, and a plurality of welding parameter combinations configured by the preset welding strategy, a target welding parameter combination matched to the current battery cover and the current bolt to be welded.

[0097] The distribution module 602 is configured to, from a second association relationship between the plurality of welding parameter combinations configured by the preset welding strategy and a plurality of welding devices, distribute the current bolt to be welded to a target welding device matched to the target welding parameter combination, so that, after the current battery cover is moved to the target welding device, the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

[0098] Further, as shown in Figure 6 The bolt welding device can further include a construction module 603 configured to, from historical welding data, statistically obtain a plurality of battery cover specifications, a plurality of bolt specifications, and a plurality of historical welding parameter combinations corresponding to each battery cover specification and each bolt specification; and according to the plurality of historical welding parameter combinations and welding parameter ranges of the plurality of welding devices, configure the first association relationship and the second association relationship for the welding strategy.

[0099] Further, the construction module 603 is further configured to, for each of a plurality of specification combinations composed of the plurality of battery cover specifications and the plurality of bolt specifications, perform the following operations: filter, from the statistical result, a plurality of historical welding parameter combinations related to the specification combination; generate, according to the plurality of historical welding parameter combinations related to the specification combination, a plurality of welding experiment parameter combinations for the specification combination, each welding experiment parameter combination including welding experiment parameters corresponding to a plurality of welding control indexes; filter, according to the welding parameter ranges of the plurality of welding devices, one or more experimental welding devices for the specification combination, so that each experimental welding device uses the plurality of welding experiment parameters included in the welding experiment parameter combination to weld an experimental bolt corresponding to the bolt specification in the specification combination to an experimental battery cover corresponding to the battery cover specification in the specification combination; and according to welding evaluation results of each specification combination and each experimental welding device, configure the first association relationship and the second association relationship for the welding strategy.

[0100] Further, the construction module 603 is further configured to, based on each welding experiment parameter combination corresponding to the specification combination, perform the following operations: select, for the specification combination, an experimental welding device matched to a welding experiment pressure included in the welding experiment parameter combination.

[0101] Further, the distribution module 602 is further configured to generate an operation instruction according to the target welding parameter combination, and send the operation instruction to the target welding device, so that the target welding device welds the current bolt to be welded to the specific position of the current battery cover according to the operation instruction.

[0102] Further, as shown in Figure 7 the embodiment of the present application provides a bolt welding system for a battery cover 700. The bolt welding system for the battery cover 700 can include a plurality of welding devices 701, a bolt storage device 702, and the bolt welding device 600 provided by any of the above embodiments, wherein,

[0103] The bolt storage device 702 stores bolts of various specifications;

[0104] The bolt welding device 600 determines a target welding device from the plurality of welding devices 701 for the current battery cover and the current bolt to be welded, and distributes the current bolt to be welded stored in the bolt storage device 702 to the target welding device;

[0105] The target welding device welds the current bolt to be welded to the specific position of the current battery cover according to the target welding parameter combination.

[0106] Reference will now be made to Figure 8 which shows the structural schematic diagram of a computer system 800 suitable for implementing the bolt welding method or device for a battery cover according to the embodiments of the present application. Figure 8 The computer system shown is only an example, and should not bring any limitation to the functions and use range of the embodiments of the present application.

[0107] As shown in Figure 8 , the computer system 800 includes a central processing unit (CPU) 801, which can perform various appropriate actions and processes according to the programs stored in a read-only memory (ROM) 802 or the programs loaded from a storage portion 808 into a random access memory (RAM) 803. In the RAM 803, various programs and data required for the operation of the system 800 are also stored. The CPU 801, the ROM 802, and the RAM 803 are connected to each other through a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0108] The following components are connected to the I / O interface 805: an input part 806; an output part 807 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage part 808 including a hard disk, etc.; and a communication part 809 including a network interface card such as a LAN card, a modem, etc. The communication part 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the I / O interface 805 as necessary. A removable medium 811 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 810 as necessary, so that a computer program read therefrom is installed in the storage part 808 as necessary.

[0109] In particular, the processes described above with reference to the flowcharts can be implemented as a computer software program in accordance with embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for executing the methods illustrated by the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication part 809, and / or installed from the removable medium 811. When the computer program is executed by the central processing unit (CPU) 801, the above-described functions defined in the system of the present disclosure are executed.

[0110] It should be noted that the computer-readable medium shown in the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or component. In the present application, the computer-readable signal medium can include a data signal carried in a baseband or as a part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to an electromagnetic signal, an optical signal or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium, which can send, propagate or transmit a program for use by or in conjunction with an instruction execution system, device or component. The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0111] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowcharts or block diagrams can represent a module, a program segment, or a portion of code that contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders than that shown in the figures. For example, two blocks that are shown in succession can actually be executed substantially concurrently, or they can sometimes be executed in reverse order, depending on the functionality involved. It should also be noted that each block in the block diagrams or flowcharts, and combinations of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs specified functions or operations, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0112] The modules described in the embodiments of the present application can be implemented in the form of software or in the form of hardware. The modules described can also be arranged in a processor, for example, a processor can be described as including a parameter determining module and an assigning module. In some cases, the names of the modules or units do not constitute a limitation on the modules or units themselves, for example, the parameter determining module can also be described as a module or unit that determines a target welding parameter combination that matches the current battery cover and the current bolt to be welded.

[0113] As another aspect, the present application also provides a computer readable medium, which can be included in the device described in the above embodiments, or can exist independently without being assembled into the device. The computer readable medium carries one or more programs, which, when executed by the device, cause the device to include: a first association relationship between a plurality of battery cover specifications, a plurality of bolt specifications and a plurality of welding parameter combinations configured by a preset welding strategy, determine a target welding parameter combination that matches the current battery cover and the current bolt to be welded; a second association relationship between the plurality of welding parameter combinations configured by the preset welding strategy and a plurality of welding devices, assign the current bolt to be welded to a target welding device that matches the target welding parameter combination, so that after the current battery cover is moved to the target welding device, the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

[0114] According to the technical scheme of the embodiments of the present application, by the first association relationship between the plurality of battery cover specifications, the plurality of bolt specifications and the plurality of welding parameter combinations configured by the welding strategy, a relatively optimal target welding parameter combination can be matched for the current battery cover and the current bolt to be welded, and by the second association relationship between the plurality of welding parameter combinations configured by the welding strategy and the plurality of welding devices, the current bolt to be welded can be assigned to a relatively optimal target welding device that matches the target welding parameter combination, so that the current bolt to be welded can be better welded to a specific position of the current battery cover using the target welding device under the target welding parameter combination, the welding yield of the battery cover is improved, and the reliability of the battery cover is effectively improved.

[0115] The above steps provide an introduction only to help understand the structure, method and core idea of the present application. For those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also belong to the scope of protection of the claims of the present application.

Claims

1. A bolt welding method for a battery cover, characterized in that: include: Determining a target welding parameter combination that matches the current battery cover and the current bolt to be welded based on a first correlation relationship between multiple battery cover specifications, multiple bolt specifications, and multiple welding parameter combinations configured in a preset welding strategy; Based on the second association relationship between multiple groups of welding parameter combinations and multiple welding equipment configured by the preset welding strategy, the current bolt to be welded is assigned to a target welding equipment that matches the target welding parameter combination, so that after the current battery cover is moved to the target welding equipment, the target welding equipment welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

2. The bolt welding method for a battery cover according to claim 1, characterized in that: Also includes: Counting multiple battery cover specifications, multiple bolt specifications, and multiple sets of historical welding parameter combinations corresponding to each of the battery cover specifications and each of the bolt specifications from the historical welding data; According to the statistically analyzed multiple groups of historical welding parameter combinations and welding parameter ranges of multiple welding equipment, a first association relationship and a second association relationship are configured for the welding strategy.

3. The bolt welding method for a battery cover according to claim 2, characterized in that: Configuring the first association relationship and the second association relationship for the welding strategy includes: For each of the plurality of specification combinations formed by combining the plurality of battery cover specifications with the plurality of bolt specifications, perform the following operations: Screening out multiple groups of historical welding parameter combinations related to the specification combination from the statistical results; Generating multiple sets of welding experimental parameter combinations for the specification combination according to multiple sets of historical welding parameter combinations related to the specification combination, each set of the welding experimental parameter combinations including welding experimental parameters corresponding to multiple welding control indicators; selecting one or more experimental welding devices for the specification combination according to welding parameter ranges of the plurality of welding devices, so that each of the experimental welding devices welds the experimental bolt corresponding to the bolt specification in the specification combination to the experimental battery cover corresponding to the battery cover specification in the specification combination using the plurality of welding experimental parameters included in the welding experimental parameter combination; According to each of the specification combinations and the welding evaluation results of each of the experimental welding devices, a first association relationship and a second association relationship are configured for the welding strategy.

4. The bolt welding method for a battery cover according to claim 3, characterized in that: The step of screening one or more experimental welding equipment for the specification combination includes: Based on each set of welding test parameter combinations corresponding to the specification combination, perform the following operations: An experimental welding device that matches the welding experimental pressure included in the welding experimental parameter combination is selected for the specification combination.

5. The bolt welding method for a battery cover according to claim 1, characterized in that: The welding parameter combination includes multiple ones of welding pressure, welding time, welding voltage and welding current.

6. The bolt welding method for a battery cover according to claim 1, characterized in that: Also includes: An operation instruction is generated according to the target welding parameter combination, and the operation instruction is sent to the target welding device, so that the target welding device welds the current bolt to be welded to the specific position of the current battery cover according to the operation instruction.

7. The bolt welding method for a battery cover according to claim 1, characterized in that: The current battery cover is a battery upper cover. Preferably, the battery upper cover comprises: a steel plate and a nickel-zinc electroplated coating provided on the steel plate; The bolt welding method includes: using the target welding equipment to weld the bolt to be welded to the battery upper cover in a resistance welding manner.

8. The bolt welding method for a battery cover according to claim 7, characterized in that: The battery cover includes: a positioning plate welded to the inner side of the battery cover, the positioning plate is used to position and limit the electrodes of the vehicle battery; The bolt to be welded is welded to the outer side of the battery upper cover, and the welding position of the bolt to be welded overlaps with the welding position of the positioning plate.

9. A bolt welding device for a battery cover, characterized in that: include: Parameter determination module and allocation module, wherein, The parameter determination module is configured to determine a target welding parameter combination that matches the current battery cover and the current bolt to be welded based on a first association relationship between multiple battery cover specifications, multiple bolt specifications, and multiple welding parameter combinations configured in a preset welding strategy; The allocation module is configured to allocate the current bolt to be welded to a target welding device that matches the target welding parameter combination based on a second association relationship between multiple sets of welding parameter combinations and multiple welding devices configured by a preset welding strategy, so that after the current battery cover is moved to the target welding device, the target welding device welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

10. A bolt welding system for a battery cover, characterized in that: include: A plurality of welding devices, a bolt storage device and a bolt welding device for a battery cover according to claim 9, wherein: The bolt storage device stores bolts of various specifications; The bolt welding device determines a target welding device for the current battery cover and the current bolt to be welded from a plurality of welding devices, and allocates the current bolt to be welded stored in the bolt storage device to the target welding device; The target welding equipment welds the current bolt to be welded to a specific position of the current battery cover according to the target welding parameter combination.

Images