Flat coil structure with multiple pieces connected in parallel, driving device and camera

Abstract

The utility model relates to a multi-piece parallel panel coil structure, a driving device and a camera, the multi-piece parallel panel coil structure is used for providing thrust for a motor, the multi-piece parallel panel coil structure comprises a first coil and a second coil which are mutually laminated and are connected in parallel, the first coil comprises four basic coils which are connected in series, and the second coil comprises a first coil and a second coil which are mutually laminated and are connected in parallel. And four basic coils which are connected in series are arranged in the second coil. The utility model provides a flat coil structure with a plurality of coils connected in parallel, which can effectively increase the number of turns and the number of layers of the coils and reduce the resistance at the same time on the premise of not violating the resistance limitation of customers, thereby remarkably improving the thrust. And a flat coil structure is adopted, so that appearance positioning during attachment and assembly is facilitated, wire breakage is not easy to occur when the coil is impacted, and the assembly convenience and the product reliability are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of motors, and particularly to a flat coil structure with multiple pieces in parallel, a driving device and a camera. Background Art

[0002] With the continuous progress of imaging technology and the expansion of application fields, the demand for camera motors is increasing day by day. The introduction of thick lenses has also increased the required thrust. However, the design of traditional flat coils faces many limitations, such as the resistance limit of customers and the wiring thickness limit in technology. These factors jointly restrict the further increase of the number of turns and layers of the coil, resulting in increased resistance and insufficient thrust, making it difficult to meet the current requirements. Summary of the Utility Model

[0003] In view of this, the utility model provides a flat coil structure with multiple pieces in parallel, which can effectively increase the number of turns and layers of the coil and simultaneously reduce the resistance without violating the resistance limit of customers, thereby significantly improving the thrust. And adopting the flat coil structure is not only convenient for the shape positioning during attachment and assembly, but also not easy to break the wire when being impacted, greatly improving the assembly convenience and product reliability.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A flat coil structure with multiple pieces in parallel for providing thrust to a motor, including a first coil and a second coil which are stacked and connected in parallel with each other. Four basic coils connected in series are contained in the first coil, and four basic coils connected in series are contained in the second coil.

[0006] The flat coil structure with multiple pieces in parallel provides strong and precise thrust for a large-stroke motor. This structure consists of two core components: the first coil and the second coil, each of which contains four basic coils connected in series, and the first coil and the second coil achieve efficient cooperation through a parallel strategy.

[0007] By introducing the parallel technology, this challenge is cleverly solved. The first coil and the second coil, that is, two 4-layer FP-Coils, are stacked up and down through a gluing technology, and the electrical connection is realized at the pads by processes such as resistance welding, SMT or conductive glue. This parallel structure reduces the resistance value of a single FP-Coil from 33.47Ω to 16.74Ω after parallel connection, achieving the effect of halving the resistance value, and finally the total resistance is only one-fourth of the traditional scheme.

[0008] The advantages of this design are not limited to the reduction of the resistance value, but also include:

[0009] Improve thrust efficiency: The significant decrease in resistance brings higher current carrying capacity, so that the motor can output greater thrust at the same voltage, meeting the strict thrust requirements of large-stroke motors.

[0010] Optimized energy consumption performance: The low resistance design significantly reduces energy loss during transmission, improves energy utilization, and helps build a more energy-saving and environmentally friendly drive system.

[0011] Enhanced system stability: The parallel structure helps to disperse the current load, reduce local overheating, and improve the stability and durability of the motor, especially under long-term high-load working conditions. The flat coil structure is not only convenient for shape positioning during attachment and assembly, but also less likely to break when hit, greatly improving the convenience of assembly and product reliability.

[0012] Flexible adaptation to a variety of applications: Despite the significant performance improvement, the design does not sacrifice compactness and can still adapt to various application scenarios with space constraints, demonstrating extremely high design flexibility.

[0013] Simplify the production process: The use of mature manufacturing processes, such as resistance welding, SMT, etc., not only ensures high production efficiency, but also effectively controls manufacturing costs, providing feasibility for large-scale production.

[0014] In summary, the design of this multi-piece parallel flat coil structure not only achieved a major breakthrough in technology, but also demonstrated significant performance advantages and economic benefits in practical applications. It is an innovative move that promotes the advancement of motor drive technology.

[0015] Preferably, the first coil includes a first carrier sheet, four basic coils arranged in the first carrier sheet, and a first interface circuit and a second interface circuit for connecting the four basic coils with the outside.

[0016] The design of the first interface circuit and the second interface circuit makes the connection between the coil and the outside world simple and clear.

[0017] Preferably, four interlayers stacked in sequence are provided in the first carrier sheet, a basic coil is provided in each interlayer, and the first interface circuit and the second interface circuit are distributed orthogonally to the interlayer.

[0018] By setting four sequentially stacked interlayers within the first carrier sheet and placing a basic coil in each interlayer, the high integration of the coils is achieved. This design reduces the space occupation, making the entire coil structure more compact and providing the possibility for the miniaturization and lightweight of the motor. Each basic coil is independently arranged in its respective interlayer, and such an isolation design helps to reduce the electromagnetic interference between the coils, improving the working efficiency and stability of the coils. At the same time, the orthogonal distribution of the coils and the interlayers ensures the shortest current path, reduces the resistance loss, and improves the energy conversion efficiency. The independent interlayer design helps the heat to be evenly distributed among the coils, avoiding the concentration of hot spots, optimizing the heat dissipation performance, and contributing to the extension of the service life of the coils and the motor.

[0019] Preferably, in the first coil, one of the four basic coils at the bottommost layer is connected to the first interface circuit, and one of the four basic coils at the topmost layer is connected to the second interface circuit.

[0020] The connection of the bottommost basic coil to the first interface circuit and the topmost basic coil to the second interface circuit simplifies the wiring process, reduces the manufacturing difficulty, and improves the production efficiency.

[0021] Preferably, the four basic coils included in the first coil are equidistantly distributed.

[0022] When the four basic coils are equidistantly distributed, they create a balanced electromagnetic field inside the first coil. This uniform field distribution helps to improve the energy conversion efficiency, reduce unnecessary electromagnetic losses, and ensure the efficient transmission and use of electrical energy. The equidistantly distributed basic coils form a symmetric force distribution on the first carrier sheet, and this structure is physically more stable. During the operation of the device, especially when subjected to external shocks or vibrations, this balanced layout can better maintain the integrity and performance stability of the coils. The equidistant distribution design means that the position and size of each basic coil are consistent during the manufacturing process, which greatly simplifies the complexity of the design and manufacturing. Manufacturers can produce these coils through standardized molds and process flows, thereby reducing costs and improving production efficiency.

[0023] Preferably, the second coil includes a second carrier sheet, four basic coils arranged within the second carrier sheet, and a third interface circuit and a fourth interface circuit for connecting the four basic coils to the outside.

[0024] The design of the third interface circuit and the fourth interface circuit makes the connection between the coil and the outside simple and clear.

[0025] Preferably, the first carrier sheet is provided with four laminated layers in sequence, and a basic coil is arranged in each layer. The first interface circuit and the second interface circuit are orthogonally distributed with respect to the layers.

[0026] By arranging four laminated layers in sequence in the second carrier sheet and placing a basic coil in each layer, the high integration of the coils is achieved. This design reduces the space occupation, makes the whole coil structure more compact, and provides the possibility for the miniaturization and light weight of the motor. Each basic coil is independently arranged in its respective layer. Such an isolation design helps to reduce the electromagnetic interference between the coils, improve the working efficiency and stability of the coils. At the same time, the orthogonal distribution of the coils and the layers ensures the shortest current path, reduces the resistance loss, and improves the energy conversion efficiency. The independent layer design helps to evenly distribute the heat among the coils, avoid the concentration of hot spots, optimize the heat dissipation performance, and contribute to extending the service life of the coils and the motor.

[0027] Preferably, in the second coil, one of the four basic coils located at the bottom layer is connected to the third interface circuit, and one of the four basic coils located at the top layer is connected to the fourth interface circuit.

[0028] The basic coil at the bottom layer is connected to the third interface circuit, and the basic coil at the top layer is connected to the fourth interface circuit. This clear connection method simplifies the wiring process, reduces the manufacturing difficulty, and improves the production efficiency.

[0029] Preferably, the four basic coils included in the second coil are equally spaced.

[0030] When the four basic coils are equally spaced, they create a balanced electromagnetic field inside the second coil. This uniform field distribution helps to improve the energy conversion efficiency, reduce unnecessary electromagnetic losses, and ensure the efficient transmission and use of electrical energy. The equally spaced basic coils form a symmetric force distribution on the first carrier sheet, and this structure is physically more stable. During the operation of the device, especially when subjected to external shocks or vibrations, this balanced layout can better maintain the integrity and performance stability of the coils. The equally spaced design means that the position and size of each basic coil are the same during the manufacturing process, which greatly simplifies the complexity of the design and manufacturing. Manufacturers can produce these coils through standardized molds and process flows, thereby reducing costs and improving production efficiency.

[0031] Preferably, the first interface circuit is connected to the third interface circuit, and the second interface circuit is connected to the fourth interface circuit.

[0032] By connecting the first interface line to the third interface line and the second interface line to the fourth interface line, this design ensures the symmetry and balance of the current path. In practical applications, this symmetric connection helps reduce potential problems caused by uneven current distribution, such as hot spot formation or voltage drop, thereby improving the overall reliability of the system. Since the connection points of the interface lines are clear and fixed, this design simplifies the circuit board wiring process. Engineers can more intuitively plan and arrange the lines, reducing the possibility of errors and rework. At the same time, when maintenance or troubleshooting is required, the clear connection relationship makes it more direct and efficient to locate and fix problems.

[0033] A driving device includes the above-described multi-piece parallel flat coil structure.

[0034] A camera includes the above-described driving device.

[0035] The beneficial effects of the present utility model compared with the prior art are as follows:

[0036] The multi-piece parallel flat coil structure of the present utility model is specifically designed to provide strong and precise thrust for a large-stroke motor. This structure consists of two core components: the first coil and the second coil, each of which contains four basic coils connected in series, and the first coil and the second coil achieve efficient cooperation through a parallel strategy.

[0037] By introducing parallel technology, this challenge is cleverly solved. The first coil and the second coil, that is, two four-layer (4-layer) FP-Coil are stacked on top of each other through gluing technology, and electrical connections are achieved at the pads using processes such as resistance welding, SMT, or conductive adhesive. This parallel structure reduces the resistance value of a single FP-Coil from 33.47Ω to 16.74Ω after parallel connection, achieving an effect of halving the resistance value, and finally the total resistance is only one-fourth of the traditional solution.

[0038] The advantages of this design are not limited to the reduction of the resistance value, but also include:

[0039] Improve thrust efficiency: The significant reduction in resistance brings higher current-carrying capacity, enabling the motor to output greater thrust under the same voltage, meeting the strict requirements of large-stroke motors for thrust.

[0040] Optimize energy consumption performance: The low-resistance design significantly reduces energy loss during transmission, improves energy utilization efficiency, and helps build a more energy-saving and environmentally friendly drive system.

[0041] Enhance system stability: The parallel structure helps disperse the current load, reduces local overheating phenomena, and improves the stability and durability of the motor, especially under long-term high-load working conditions.

[0042] Flexibly adaptable to various applications: Despite the significant performance improvement, the design does not sacrifice the compactness of the form factor and can still adapt to various application scenarios with space limitations, demonstrating extremely high design flexibility.

[0043] Simplify the production process: Adopting mature manufacturing processes such as resistance welding and SMT not only ensures high production efficiency but also effectively controls the manufacturing cost, providing feasibility for large-scale production.

[0044] In summary, the design of this multi-chip parallel flat coil structure not only achieves a major breakthrough in technology but also demonstrates significant performance advantages and economic benefits in practical applications. It is an innovative move to push the motor drive technology forward. Brief Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative efforts.

[0046] Figure 1 It is a structural diagram of the multi-chip parallel flat coil structure according to an embodiment of the present utility model.

[0047] Figure 2 It is an assembly diagram of the multi-chip parallel flat coil structure according to an embodiment of the present utility model.

[0048] Figure 3 It is an internal structure schematic diagram of the multi-chip parallel flat coil structure according to an embodiment of the present utility model. Detailed Embodiments

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents the selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0051] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0052] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0053] Next, the technical solutions in the present application will be described with reference to the figures.

[0054] This embodiment provides a multi - plate parallel flat coil structure for providing thrust to a motor, including a first coil 10 and a second coil 20 which are stacked and connected in parallel with each other. The first coil 10 contains four basic coils 14 connected in series, and the second coil 20 contains four basic coils 24 connected in series.

[0055] The multi - plate parallel flat coil structure is designed to provide strong and precise thrust for a large - stroke motor. This structure consists of two core components: the first coil 10 and the second coil 20, each of which contains four basic coils connected in series, and the first coil 10 and the second coil 20 achieve efficient cooperation through a parallel strategy.

[0056] By introducing parallel technology, this challenge is cleverly solved. The first coil 10 and the second coil 20, that is, two four - layer (4 - layer) FP - Coils, are stacked on top of each other through gluing technology, and electrical connections are achieved at the pads using processes such as resistance welding, SMT, or conductive adhesive. This parallel structure reduces the resistance value of a single FP - Coil from 33.47Ω to 16.74Ω after parallel connection, achieving an effect of halving the resistance value, and finally the total resistance is only one - quarter of the traditional solution.

[0057] The advantages of this design are not limited to the reduction of the resistance value, but also include:

[0058] Improve thrust efficiency: The significant reduction in resistance brings a higher current - carrying capacity, enabling the motor to output greater thrust under the same voltage, meeting the strict requirements of large - stroke motors for thrust.

[0059] Optimizing energy consumption performance: The low-resistance design significantly reduces energy loss during transmission, improves energy utilization efficiency, and helps build a more energy-saving and environmentally friendly drive system.

[0060] Enhancing system stability: The parallel structure helps disperse the current load, reduces local overheating, and improves the stability and durability of the motor, especially under long-term high-load working conditions.

[0061] Flexibly adapting to various applications: Despite the significant performance improvement, the design does not sacrifice the compactness of the form factor and can still adapt to various application scenarios with space limitations, demonstrating extremely high design flexibility.

[0062] Simplifying the production process: Adopting mature manufacturing processes such as resistance welding and SMT not only ensures high production efficiency but also effectively controls manufacturing costs, providing feasibility for large-scale production.

[0063] In summary, the design of this multi-chip parallel flat coil structure not only achieves a major breakthrough in technology but also demonstrates significant performance advantages and economic benefits in practical applications. It is an innovative move to push the motor drive technology forward.

[0064] In this embodiment, the first coil 10 includes a first carrier sheet 11, four basic coils disposed within the first carrier sheet 11, and a first interface line 12 and a second interface line 13 for connecting the four basic coils to the outside.

[0065] The design of the first interface line 12 and the second interface line 13 makes the connection between the coil and the outside simple and clear.

[0066] In this embodiment, four layers are sequentially stacked within the first carrier sheet 11, and each layer contains a basic coil. The first interface line 12 and the second interface line 13 are orthogonally distributed with respect to the layers.

[0067] By providing four sequentially stacked layers within the first carrier sheet 11 and placing a basic coil in each layer, the high integration of the coil is achieved. This design reduces space occupation, makes the entire coil structure more compact, and provides the possibility for the miniaturization and lightweight of the motor. Each basic coil is independently arranged in its respective layer, and such an isolation design helps reduce electromagnetic interference between the coils, improves the working efficiency and stability of the coils. At the same time, the orthogonal distribution of the coils and the layers ensures the shortest current path, reduces resistance loss, and improves energy conversion efficiency. The independent layer design helps the uniform distribution of heat among the coils, avoids hot spot concentration, optimizes the heat dissipation performance, and helps extend the service life of the coils and the motor.

[0068] In this embodiment, in the first coil 10, one of the four basic coils at the bottommost layer is connected to the first interface line 12, and one of the four basic coils at the topmost layer is connected to the second interface line 13.

[0069] The bottommost basic coil is connected to the first interface line 12, and the topmost basic coil is connected to the second interface line 13. This clear connection method simplifies the wiring process, reduces the manufacturing difficulty, and improves the production efficiency.

[0070] In this embodiment, the four basic coils included in the first coil 10 are equally spaced.

[0071] When the four basic coils are equally spaced, they create a balanced electromagnetic field inside the first coil 10. This uniform field distribution helps to improve the energy conversion efficiency, reduce unnecessary electromagnetic losses, and ensure the efficient transmission and use of electrical energy. The equally spaced basic coils form a symmetric force distribution on the first carrier sheet 11, and this structure is physically more stable. During the operation of the device, especially when subjected to external impacts or vibrations, this balanced layout can better maintain the integrity and performance stability of the coils. The equally spaced design means that the position and size of each basic coil are consistent during the manufacturing process, which greatly simplifies the complexity of design and manufacturing. Manufacturers can produce these coils through standardized molds and process flows, thereby reducing costs and improving production efficiency.

[0072] In this embodiment, the second coil 20 includes a second carrier sheet 21, four basic coils disposed within the second carrier sheet 21, and a third interface line 22 and a fourth interface line 23 for connecting the four basic coils to the outside.

[0073] The design of the third interface line 22 and the fourth interface line 23 makes the connection between the coil and the outside simple and clear.

[0074] In this embodiment, four interlayers are sequentially stacked within the first carrier sheet 11, and one basic coil is disposed within each interlayer. The first interface line 12 and the second interface line 13 are orthogonally distributed with respect to the interlayers.

[0075] By arranging four successively stacked interlayers within the second carrier sheet 21 and placing a basic coil in each interlayer, the high integration of the coils is achieved. This design reduces the space occupation, making the entire coil structure more compact and providing the possibility for the miniaturization and lightweight of the motor. Each basic coil is independently arranged in its respective interlayer. Such an isolation design helps to reduce the electromagnetic interference between the coils, improve the working efficiency and stability of the coils. At the same time, the orthogonal distribution of the coils and the interlayers ensures the shortest current path, reduces the resistance loss, and improves the energy conversion efficiency. The independent interlayer design helps to evenly distribute the heat among the coils, avoid the concentration of hot spots, optimize the heat dissipation performance, and contribute to extending the service life of the coils and the motor.

[0076] In this embodiment, within the second coil 20, one of the four basic coils located at the bottommost layer is connected to the third interface circuit 22, and one of the four basic coils located at the topmost layer is connected to the fourth interface circuit 23.

[0077] The bottommost basic coil is connected to the third interface circuit 22, and the topmost basic coil is connected to the fourth interface circuit 23. Such a clear connection method simplifies the wiring process, reduces the manufacturing difficulty, and improves the production efficiency.

[0078] In this embodiment, the four basic coils contained in the second coil 20 are equally spaced.

[0079] When the four basic coils are equally spaced, they create a balanced electromagnetic field inside the second coil 20. Such a uniform field distribution helps to improve the energy conversion efficiency, reduce unnecessary electromagnetic losses, and ensure the efficient transmission and use of electrical energy. The equally spaced basic coils form a symmetrical force distribution on the first carrier sheet 11, and this structure is physically more stable. During the operation of the device, especially when subjected to external impacts or vibrations, such a balanced layout can better maintain the integrity and performance stability of the coils. The equally spaced design means that the position and size of each basic coil are the same during the manufacturing process, which greatly simplifies the complexity of the design and manufacturing. Manufacturers can produce these coils through standardized molds and process flows, thereby reducing costs and improving production efficiency.

[0080] In this embodiment, the first interface circuit 12 is connected to the third interface circuit 22, and the second interface circuit 13 is connected to the fourth interface circuit 23.

[0081] By connecting the first interface line 12 to the third interface line 22 and the second interface line 13 to the fourth interface line 23, this design ensures the symmetry and balance of the current path. In practical applications, this symmetric connection helps to reduce potential problems caused by uneven current distribution, such as hot spot formation or voltage drop, thus improving the overall reliability of the system. Since the connection points of the interface lines are clear and fixed, this design simplifies the wiring process of the circuit board. Engineers can more intuitively plan and arrange the lines, reducing the possibility of errors and rework. At the same time, when maintenance or troubleshooting is required, the clear connection relationship makes it more direct and efficient to locate and fix problems.

[0082] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-plate parallel coil structure, characterized in that: The invention is used for providing thrust for a motor, and comprises a first coil and a second coil which are stacked on each other and connected in parallel, wherein the first coil contains four basic coils which are connected in series, and the second coil contains four basic coils which are connected in series.

2. The multi-piece parallel flat coil structure according to claim 1, characterized in that: The first coil includes a first carrier sheet, four basic coils arranged in the first carrier sheet, and a first interface circuit and a second interface circuit for connecting the four basic coils with the outside.

3. The multi-piece parallel flat coil structure according to claim 2, characterized in that: The first carrier sheet is provided with four interlayers stacked in sequence, each interlayer is provided with a basic coil, and the first interface circuit and the second interface circuit are distributed orthogonally to the interlayer.

4. The multi-piece parallel flat coil structure according to claim 3, characterized in that: In the first coil, one of the four basic coils located at the bottom layer is connected to the first interface circuit, and one of the four basic coils located at the top layer is connected to the second interface circuit.

5. The multi-plate parallel coil structure according to claim 4, characterized in that: The four basic coils contained in the first coil are distributed equidistantly.

6. The multi-plate parallel coil structure according to claim 2, characterized in that: The second coil includes a second carrier sheet, four basic coils arranged in the second carrier sheet, and a third interface circuit and a fourth interface circuit for connecting the four basic coils with the outside.

7. The multi-piece parallel flat coil structure according to claim 6, characterized in that: The first carrier sheet is provided with four interlayers stacked in sequence, each interlayer is provided with a basic coil, and the first interface circuit and the second interface circuit are distributed orthogonally to the interlayer.

8. The multi-piece parallel flat coil structure according to claim 7, characterized in that: In the second coil, one of the four basic coils located at the bottom layer is connected to the third interface line, and one of the four basic coils located at the top layer is connected to the fourth interface line.

9. A driving device, characterized in that: The invention comprises a multi-piece parallel flat coil structure as claimed in any one of claims 1 to 8.

10. A camera, characterized in that: Comprising the driving device as claimed in claim 9.

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