Steel-aluminum connecting structure and method, controller and medium

Abstract

The invention discloses a steel-aluminum connecting structure and method, a controller and a medium. The steel-aluminum connecting structure comprises a steel plate, an aluminum plate and a pressing rivet steel sheet. The pressing rivet steel sheet comprises a pressing rivet body and rivet legs arranged on the pressing rivet body. The pressure riveting steel sheet is arranged between the aluminum plate and the steel plate, the pressure riveting steel sheet is riveted and fixed on the aluminum plate through the riveting leg, and the steel plate is connected with the pressure riveting steel sheet through the first spot welding head formed by spot welding. Stable connection between steel and aluminum is achieved through the riveting technology and the spot welding technology suitable for the steel vehicle body, collinear production of the steel-aluminum hybrid vehicle body and the steel vehicle body can be achieved, and the production cost is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a steel-aluminum connection structure, method, controller and medium. Background Art

[0002] At present, the connection between steel and aluminum parts in the automotive industry can be achieved by self-piercing riveting (SPR) and flow drill screw (FDS) processes, while for steel car bodies, the commonly used connection process for automobile companies is spot welding.

[0003] If self-piercing riveting and rotary tapping riveting processes are needed to produce steel-aluminum car bodies, it is necessary to purchase SPR riveting and FDS riveting equipment, or establish a dedicated steel-aluminum hybrid production line, which will greatly increase costs. At the same time, other riveting processes in the existing technology cannot achieve the connection of two layers of high-strength steel and aluminum alloy. Summary of the invention

[0004] The embodiments of the present invention provide a steel-aluminum connection structure, method, controller and medium to solve the problem that the riveting process in the prior art cannot achieve the connection between high-strength steel and aluminum alloy.

[0005] A steel-aluminum connection method includes a steel plate, an aluminum plate and a riveted steel sheet; the riveted steel sheet includes a riveted body and rivet legs arranged on the riveted body, and the riveted steel sheet is riveted to the aluminum plate through the rivet legs; the end face of the riveted body facing away from the rivet legs is welded to the steel plate.

[0006] A steel-aluminum connection method, comprising:

[0007] Controlling the riveting equipment to rivet the riveted steel sheet onto the aluminum plate; the riveted steel sheet comprises a riveted body and rivet legs arranged on the riveted body, and the riveted steel sheet is riveted onto the aluminum plate via the rivet legs;

[0008] Control the first welding device to spot weld the riveted steel sheet and the steel plate according to preset spot welding parameters, so as to connect the riveted steel sheet and the steel plate through a first spot welding joint formed between the first spot welding surface and the steel plate; the first spot welding surface refers to the end surface of the riveted body that is away from the rivet leg.

[0009] A controller is used to execute the above-mentioned steel-aluminum connection method.

[0010] A computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned steel-aluminum connection method is implemented.

[0011] In the above-mentioned steel-aluminum connection structure, method, controller and medium, the riveted steel sheet includes a riveted body and rivet legs arranged on the riveted body. After controlling the riveting equipment to rivet the rivet legs of the riveted steel sheet onto the aluminum plate; controlling the first welding equipment to spot weld the riveted steel sheet and the steel plate according to preset spot welding parameters, so as to connect the riveted steel sheet and the steel plate through a first spot welding joint formed between the first spot welding surface and the steel plate; the first spot welding surface refers to the end surface of the riveted body that is away from the rivet legs.

[0012] The present invention adds a riveted steel sheet between the aluminum plate and the steel plate, and the rivet legs provided on the riveted steel sheet can rivet it to the surface of the aluminum plate to be connected to the steel plate, and then the steel plate can be spot welded to the first electric welding surface of the riveted steel sheet, so that a first spot welding joint is formed between the first spot welding surface and the steel plate, and finally a stable connection between the steel plate and the aluminum plate is achieved. The present invention realizes a stable connection between the steel plate (such as high-strength steel) and the aluminum plate (such as aluminum alloy) through the riveting process and the spot welding process suitable for the steel car body, and then the co-production of the steel-aluminum hybrid car body and the steel car body can be achieved, which greatly reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0014] Figure 1 is a schematic diagram of the structure of the steel-aluminum connection structure before connection in one embodiment of the present invention;

[0015] Figure 2 It is a schematic diagram of the structure after the steel-aluminum connection structure is connected in one embodiment of the present invention;

[0016] Figure 3 It is a schematic diagram of riveting a riveted steel sheet to an aluminum plate in a steel-aluminum connection method according to an embodiment of the present invention;

[0017] Figure 4 It is a schematic diagram of the second welding device in the steel-aluminum connection method in one embodiment of the present invention performing resistance welding on the riveted steel sheet and the aluminum plate;

[0018] Figure 5 It is a schematic diagram of spot welding a riveted steel sheet and a steel plate by a first welding device in a steel-aluminum connection method in one embodiment of the present invention;

[0019] Figure 6 is a flow chart of a steel-aluminum connection method in one embodiment of the present invention;

[0020] Figure 7 is a schematic diagram of a computer device in one embodiment of the present invention.

[0021] The reference numerals in the specification are as follows:

[0022] 1. Steel plate; 2. Riveted steel sheet; 21. Rivet leg; 22. Spike; 3. Aluminum plate; 4. Riveting equipment; 5. Second welding equipment; 6. First welding equipment. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In one embodiment, if Figure 1 and Figure 2 As shown, a steel-aluminum connection structure is provided, including a steel plate 1, an aluminum plate 3 and a riveted steel sheet 2; the riveted steel sheet 2 includes a riveted body and a rivet leg 21 arranged on the riveted body, and the riveted steel sheet 2 is riveted to the aluminum plate 3 through the rivet leg 21; the end face of the riveted body facing away from the rivet leg 21 is welded to the steel plate 1.

[0025] Among them, the riveted steel sheet 2 is a bridge to achieve the connection between the steel plate 1 (such as high-strength steel, etc.) and the aluminum plate 3 (such as an aluminum alloy plate with an oxide layer, etc.). The riveted steel sheet 2 is riveted to the aluminum plate 3 through the rivet leg 21 to form a firm riveted joint. It can be understood that in the process of riveting the riveted steel sheet 2 to the aluminum plate 3 through the rivet leg 21, the rivet leg 21 will penetrate the oxide layer of the aluminum plate 3 (the oxide layer is not conductive) and insert into the aluminum plate 3. Then, in the subsequent welding process, the welding current (such as the first welding current and the second welding current mentioned later) between the aluminum plate 3 and the riveted steel sheet 2 and the steel plate 1 can be conducted through the rivet leg 21. In addition, the riveted steel sheet 2 and the steel plate 1 form a firm first spot welding joint through spot welding, so that the steel plate 1 and the aluminum plate 3 are firmly connected. Understandably, when the riveted steel sheet 2 and the steel plate 1 are spot welded, one or more first spot welding joints are formed on the first spot welding surface of the riveted steel sheet 2 opposite to the steel plate 1 (each first spot welding joint corresponds to at least one first position point on the first spot welding surface), and at the same time, on the second spot welding surface of the riveted steel sheet 2 opposite to the aluminum plate 3 (that is, the end surface of the riveted steel sheet 2 that is away from the first spot welding surface), one or more second spot welding joints are also formed at the second position point corresponding to the first spot welding joint (that is, the position point opposite to the first position point), and the second spot welding joint also has a certain strength, and can be used to cooperate with the rivet leg 21 and the like to further firmly connect the aluminum plate 3 and the riveted steel sheet 2. The steel-aluminum connection structure of the present invention has a simple structure, a simple and reliable connection process, and the riveted steel sheet 2 and the steel plate 1 can obtain a firm first spot welding joint by spot welding, and the riveted steel sheet 2 and the aluminum plate 3 can be connected by the rivet leg 21 and the second spot welding joint, and the steel-aluminum connection structure has good joint strength and no weak points. Furthermore, the above-mentioned riveted steel sheet 2 only needs to be set to one specification to be applicable to steel plates 1 and aluminum plates 3 of all thicknesses, and has wide applicability.

[0026] The present invention adds a riveted steel sheet 2 between the aluminum plate 3 and the steel plate 1, and the rivet legs 21 provided on the riveted steel sheet 2 can rivet it to the surface of the aluminum plate 3 to be connected to the steel plate 1, and then the steel plate 1 can be spot welded to the first spot welding surface of the riveted steel sheet 2, so that a first spot welding joint is formed between the first spot welding surface and the steel plate 1 (on the second spot welding surface of the riveted steel sheet 2 opposite to the aluminum plate 3, one or more second spot welding joints will also be formed at the second position point corresponding to the first spot welding joint), and finally a stable connection between the steel plate 1 and the aluminum plate 3 is achieved. The present invention realizes a stable connection between the steel plate 1 (such as high-strength steel) and the aluminum plate 3 (such as aluminum alloy) through a riveting process and a spot welding process suitable for a steel car body, and then the co-line production of a steel-aluminum hybrid car body and a steel car body can be achieved, which greatly reduces the production cost.

[0027] Furthermore, if Figure 1 and Figure 2As shown, the rivet legs 21 enclose a riveting space, and the pressure riveted steel sheet 2 also includes a plurality of spurs 22 arranged at intervals on the pressure riveted body, and the plurality of spurs 22 are all located in the riveting space, and the spurs 22 are used to pierce the oxide layer of the aluminum plate 3 and insert into the aluminum plate 3. It is understandable that the plurality of spurs 22 are evenly spaced and distributed on the second spot welding surface of the pressure riveted body. In the process of riveting the pressure riveted steel sheet 2 to the aluminum plate 3 through the rivet legs 21, the rivet legs 21 and the spurs 22 will penetrate the oxide layer of the aluminum plate 3 (the oxide layer is not conductive) and insert into the aluminum plate 3, and then, in the subsequent welding process, the welding current (such as the first welding current and the second welding current mentioned later) between the aluminum plate 3 and the pressure riveted steel sheet 2 and the steel plate 1 can be conducted through the rivet legs 21 and the spurs 22; it is understandable that the provision of the spurs 22 can increase the contact area between the pressure riveted steel sheet 2 and the aluminum plate 3, so that the welding current in the subsequent welding process is smoother, which is conducive to improving the welding quality.

[0028] In one embodiment, if Figure 6 As shown, a steel-aluminum connection method is provided, comprising the following steps:

[0029] S10: Control the riveting device to rivet the riveted steel sheet 2 onto the aluminum plate 3; the riveted steel sheet 2 includes a riveted body and a rivet leg 21 disposed on the riveted body, and the riveted steel sheet 2 is riveted to the aluminum plate 3 via the rivet leg 21; specifically, Figure 3 As shown, the aluminum plate 3 is placed in the riveting equipment, and the riveted steel sheet 2 is installed so that the rivet legs 21 are set toward the aluminum plate 3. Then, the riveted steel sheet 2 can be pressed onto the aluminum plate 3, so that the rivet legs 21 penetrate the oxide layer of the aluminum plate 3 (the oxide layer is not conductive) and insert into the aluminum plate 3, thereby making the riveted steel sheet 2 riveted to the aluminum plate 3 through the rivet legs 21 to form a firm riveted joint.

[0030] S20: Control the first welding device 6 to spot weld the riveted steel sheet 2 and the steel plate 1 according to the preset spot welding parameters, so as to connect the riveted steel sheet 2 and the steel plate 1 through the first spot welding joint formed between the first spot welding surface and the steel plate 1; the first spot welding surface refers to the end surface of the riveted body that is away from the rivet leg 21. Understandably, the first welding device 6 can be a welding gun. Furthermore, the preset spot welding parameters include but are not limited to the following parameters: the first pressure is 3KN-5KN, the first welding current is 10KA-40KA, and the first welding time is 50ms-500ms. Under the above preset spot welding parameters, a stable spot welding connection between the steel plate 1 and the riveted steel sheet 2 can be achieved.

[0031] Understandably, if Figure 4As shown, since the rivet leg 21 penetrates the oxide layer of the aluminum plate 3 (the oxide layer is not conductive) and is inserted into the aluminum plate 3, during the spot welding process of step S20, the first welding device 6 will be provided with a device for piercing the oxide layer on the aluminum plate 3 (on the end surface of the aluminum plate 3 away from the riveted steel sheet 2) that is bonded thereto. At this time, the first welding current between the aluminum plate 3 and the riveted steel sheet 2 and the steel plate 1 can be conducted through the rivet leg 21, and then under the action of the first welding current, the riveted steel sheet 2 and the steel plate 1 form a firm first spot welding joint through spot welding, so that the steel plate 1 and the aluminum plate 3 are firmly connected.

[0032] Further, the step S20, that is, controlling the first welding device 6 to spot weld the riveted steel sheet 2 and the steel plate 1 according to preset spot welding parameters, so as to connect the riveted steel sheet 2 and the steel plate 1 through a first spot welding joint formed between the first spot welding surface and the steel plate 1, also includes: controlling the first welding device 6 to spot weld the riveted steel sheet 2, the steel plate 1 and the aluminum plate 3 according to preset spot welding parameters, so as to connect the riveted steel sheet 2 and the steel plate 1 through a first spot welding joint formed at at least one first position point between the first spot welding surface and the steel plate 1, and at the same time forming a second spot welding joint at at least one second position point between the second spot welding surface and the aluminum plate 3; the first position points and the second position points are set in a one-to-one correspondence.

[0033] Understandably, when the riveted steel sheet 2 and the steel plate 1 are spot welded, one or more first spot welding joints are formed on the first spot welding surface of the riveted steel sheet 2 opposite to the steel plate 1 (each first spot welding joint corresponds to at least one first position point on the first spot welding surface), and at the same time, on the second spot welding surface of the riveted steel sheet 2 opposite to the aluminum plate 3 (that is, the end surface of the riveted steel sheet 2 that is away from the first spot welding surface), one or more second spot welding joints are also formed at the second position point corresponding to the first spot welding joint (that is, the position point opposite to the first position point), and the second welding joint also has a certain strength, and can be used to cooperate with the rivet leg 21 and the like to further firmly connect the aluminum plate 3 and the riveted steel sheet 2. The above-mentioned steel-aluminum connection method of the present invention is simple and reliable, and the riveted steel sheet 2 and the steel plate 1 can obtain a firm first spot welding joint by spot welding, and the riveted steel sheet 2 and the aluminum plate 3 can be connected by the rivet leg 21 and the second spot welding joint, and the steel-aluminum connection structure has good joint strength and no weak points. Furthermore, the above-mentioned riveted steel sheet 2 only needs to be set to one specification to be applicable to steel plates 1 and aluminum plates 3 of all thicknesses, and has wide applicability.

[0034] The present invention adds a riveted steel sheet 2 between the aluminum plate 3 and the steel plate 1, and the rivet legs 21 provided on the riveted steel sheet 2 can rivet it to the surface of the aluminum plate 3 to be connected with the steel plate 1, and then the steel plate 1 can be spot welded with the first electric welding surface of the riveted steel sheet 2, so that a first spot welding joint is formed between the first spot welding surface and the steel plate 1, and finally a stable connection between the steel plate 1 and the aluminum plate 3 is achieved. The present invention realizes a stable connection between the steel plate 1 (such as high-strength steel) and the aluminum plate 3 (such as aluminum alloy) through a riveting process and a spot welding process suitable for a steel car body, and then the co-production of a steel-aluminum hybrid car body and a steel car body can be achieved, greatly reducing the production cost.

[0035] In one embodiment, the rivet legs 21 enclose a riveting space, and the riveted steel sheet 2 further includes a plurality of spurs 22 spaced apart on the riveted body, and the plurality of spurs 22 are all located in the riveted space; understandably, the plurality of spurs 22 are evenly spaced apart and distributed on the second spot welding surface of the riveted body.

[0036] Further, in step S10, the control of the riveting device to rivet the riveted steel sheet 2 on the aluminum plate 3 includes: controlling the riveting device to press the riveted steel sheet 2 and the aluminum plate 3, so that the rivet leg 21 and the spur 22 are inserted into the aluminum plate 3, and the riveted body is in contact with the aluminum plate 3. That is, in the process of riveting the riveted steel sheet 2 to the aluminum plate 3 through the rivet leg 21, the rivet leg 21 and the spur 22 will penetrate the oxide layer of the aluminum plate 3 (the oxide layer is not conductive) and insert into the aluminum plate 3, and then, in the subsequent welding process, the welding current (such as the first welding current and the second welding current) between the aluminum plate 3 and the riveted steel sheet 2 and the steel plate 1 can be conducted through the rivet leg 21 and the spur 22; it can be understood that the provision of the spur 22 can increase the contact area between the riveted steel sheet 2 and the aluminum plate 3, so that the welding current in the subsequent welding process is smoother, which is conducive to improving the welding quality.

[0037] In one embodiment, if Figure 5 As shown, the control of the riveting device to press the riveted steel sheet 2 and the aluminum plate 3 so that the rivet leg 21 and the spur 22 are inserted into the aluminum plate 3, and after the riveting body is attached to the aluminum plate 3, before step S20, further includes:

[0038] The second welding device 5 is controlled to perform resistance welding on the riveted steel sheet 2 and the aluminum plate 3 according to preset resistance welding parameters, so that after the contact position between the aluminum plate 3 and the inserted spur 22 enters a molten state under the action of resistance heat, the spur 22 and the aluminum plate 3 are engaged with each other. The second welding device 5 can be another device independently provided with the riveting device, or can be integrated into the above-mentioned riveting device to further realize the co-production of the steel-aluminum hybrid body and the steel body. Furthermore, the preset resistance welding parameters include but are not limited to the following parameters: the second pressure is 3-4KN, the second welding current is 10KA-30KA, and the second welding time is 1000ms-2000ms. Among them, since this resistance welding only needs to make the contact position on the aluminum plate 3 with the inserted spike 22 (and the rivet leg 21) enter a molten state, the required welding current is smaller than the above-mentioned spot welding. Therefore, the second welding current is smaller than the first welding current; and since the area corresponding to the position that needs to enter the molten state on the aluminum plate 3 is larger than that of the above-mentioned spot welding, the second welding time needs to be greater than the first welding time to ensure sufficient bite between the spike 22 and the aluminum plate 3.

[0039] It can be understood that the above-mentioned spur 22 forms a bite with the aluminum plate 3, which means that the position on the aluminum plate 3 where the spur 22 (and the rivet leg 21) is inserted generates resistance heat and enters a molten state (the aluminum plate 3 has a low melting point and enters a molten state first), and then completely covers and adheres to the spur 22 (and the rivet leg 21), so that after the spur 22 (and the rivet leg 21) is inserted into the aluminum plate 3, the gap between the spur 22 (and the rivet leg 21) and the aluminum plate 3 disappears (when there is a gap, poor welding conditions such as spatter are easily generated), thereby making the contact area between the spur 22 (and the rivet leg 21) and the aluminum plate 3 larger, and the current conduction effect is better.

[0040] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0041] The present invention also provides a controller, which is used to execute the above-mentioned steel-aluminum connection method. The specific definition of the controller can be found in the definition of the steel-aluminum connection method above, and will not be repeated here.

[0042] Each module in the above controller can be implemented in whole or in part by software, hardware or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute the operations corresponding to each module. It can be understood that the controller can be regarded as one or more computer devices, such as Figure 7As shown, the computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store the data used in the steel-aluminum connection method in the above-mentioned embodiment. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a steel-aluminum connection method is implemented.

[0043] In one embodiment, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and the computer program implements the above-mentioned steel-aluminum connection method when executed by a processor.

[0044] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0045] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0046] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A steel-aluminum connection structure, characterized in that: It includes a steel plate, an aluminum plate and a riveted steel sheet; the riveted steel sheet includes a riveted body and rivet legs arranged on the riveted body, and the riveted steel sheet is riveted to the aluminum plate through the rivet legs; the end face of the riveted body facing away from the rivet legs is welded to the steel plate.

2. The steel-aluminum connection structure according to claim 1, characterized in that: The rivet legs form a riveting space, and the riveted steel sheet further comprises a plurality of thorns arranged at intervals on the riveted body, wherein the plurality of thorns are all located in the riveting space, and the thorns are used to pierce the oxide layer of the aluminum plate and insert into the aluminum plate.

3. A steel-aluminum connection method, characterized in that: include: Controlling the riveting equipment to rivet the riveted steel sheet onto the aluminum plate; the riveted steel sheet comprises a riveted body and rivet legs arranged on the riveted body, and the riveted steel sheet is riveted onto the aluminum plate via the rivet legs; Control the first welding device to spot weld the riveted steel sheet and the steel plate according to preset spot welding parameters, so as to connect the riveted steel sheet and the steel plate through a first spot welding joint formed between the first spot welding surface and the steel plate; the first spot welding surface refers to the end surface of the riveted body that is away from the rivet leg.

4. The steel-aluminum connection method according to claim 3, characterized in that: The preset spot welding parameters include: a first pressure of 3KN-5KN, a first welding current of 10KA-40KA, and a first welding time of 50ms-500ms.

5. The steel-aluminum connection method according to claim 3, characterized in that: The rivet legs form a riveting space, and the pressure-riveted steel sheet further comprises a plurality of thorns arranged at intervals on the pressure-riveted body, and the plurality of thorns are all located in the riveting space; The control riveting device rivets the riveted steel sheet onto the aluminum plate, comprising: The riveting device is controlled to press the riveted steel sheet and the aluminum plate together, so that the rivet legs and the spurs are inserted into the aluminum plate, and the riveting body is in contact with the aluminum plate.

6. The steel-aluminum connection method according to claim 5, characterized in that: The controlling of the riveting device to press the riveted steel sheet and the aluminum plate together so that the rivet legs and the spurs are inserted into the aluminum plate, and after the riveting body is attached to the aluminum plate, and before the controlling of the first welding device to spot weld the riveted steel sheet and the steel plate according to preset spot welding parameters, further comprises: The second welding device is controlled to perform resistance welding on the riveted steel sheet and the aluminum plate according to preset resistance welding parameters, so that after the contact position between the aluminum plate and the inserted spur enters a molten state under the action of resistance heat, the spur and the aluminum plate form a bite.

7. The steel-aluminum connection method according to claim 6, characterized in that: The preset resistance welding parameters include: a second pressure of 3-4KN, a second welding current of 10KA-30KA, and a second welding time of 1000ms-2000ms.

8. The steel-aluminum connection method according to claim 3, characterized in that: The controlling the first welding device to spot weld the riveted steel sheet and the steel plate according to preset spot welding parameters, so as to connect the riveted steel sheet and the steel plate through a first spot welding joint formed between the first spot welding surface and the steel plate, further comprising: Control the first welding device to spot weld the riveted steel sheet, the steel plate and the aluminum plate according to preset spot welding parameters, so as to connect the riveted steel sheet and the steel plate through a first spot welding joint formed at at least one first position point between the first spot welding surface and the steel plate, and at the same time form a second spot welding joint at at least one second position point between the second spot welding surface and the aluminum plate; the first position points and the second position points are set in a one-to-one correspondence.

9. A controller, characterized in that: The controller is used to execute the steel-aluminum connection method as described in any one of claims 1 to 8.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steel-aluminum connection method as described in any one of claims 1 to 8 is implemented.

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