CN113014757A

CN113014757A - Camera module and electronic equipment

Info

Publication number: CN113014757A
Application number: CN202110179678.0A
Authority: CN
Inventors: 艾海强; 瞿金山
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-02-07
Filing date: 2021-02-07
Publication date: 2021-06-22
Anticipated expiration: 2041-02-07
Also published as: CN113014757B

Abstract

The application discloses a camera module and electronic equipment, which belong to the technical field of communication equipment, wherein the camera module comprises a module shell, a camera main body and at least one driving assembly; the module shell is provided with an inner cavity, and at least part of the camera main body is positioned in the inner cavity; wherein, every drive assembly includes coil assembly, magnet and detecting element, coil assembly and magnet one set up in the module casing, another sets up in the camera main part, coil assembly includes first coil and second coil, first coil and second coil are along the direction interval distribution of the distribution of two magnetic poles of magnet, the at least part of one of them magnetic pole of first coil and magnet sets up relatively, the at least part of another magnetic pole of second coil and magnet sets up relatively, detecting element sets up between first coil and second coil, the direction that first coil lets in the electric current is opposite with the direction that the second coil lets in the electric current. The problem that the shooting performance of camera module is relatively poor can be solved to above-mentioned scheme.

Description

Camera module and electronic equipment

Technical Field

The application belongs to the technical field of shooting equipment, and particularly relates to a camera module and electronic equipment.

Background

Many people use electronic equipment to shoot or take a video nowadays, people can make the module shake of making a video recording because of factors such as hand shake or support vibrations in the in-process of shooing unavoidably, in case take place the shake, then the photo or the video of shooing out can be fuzzy, influence user experience. Therefore, how to solve the problem of shaking of the camera module in the using process is a difficult problem in the technical field of camera devices. In the process of solving this problem, the camera module usually adopts the technology of OIS anti-shake (Optical image stabilization).

In the correlation technique, the camera module has drive assembly, and drive assembly is connected with the camera, and drive assembly is through the angle of adjustment camera to realize the anti-shake function. The drive assembly comprises an electrified coil and a magnet, the electrified coil is arranged on the shell of the camera module, and the magnet is arranged on the camera. When the electrified coil is electrified, the magnet can be driven to rotate, so that the camera is driven to rotate, and the anti-shaking effect is realized.

In the process of implementing the invention, the inventor finds that in the related art, a detection element is arranged in the center of the electrified coil, and the detection element can measure the deflection angle of the camera, so that the anti-shake effect of the camera is ensured. However, after the energizing coil is energized, a large magnetic field is generated, so that interference is easily caused to the detection element, the detection accuracy of the detection element is poor, and the shooting performance of the camera module is poor.

Disclosure of Invention

The embodiment of the application aims to provide a camera module and electronic equipment, and the problem that the shooting performance of the electronic equipment is poor can be solved.

In order to solve the technical problem, the present application is implemented as follows:

the embodiment of the application provides a camera module, which comprises a module shell, a camera main body and at least one driving component;

the module shell is provided with an inner cavity, at least part of the camera main body is positioned in the inner cavity, and the camera main body is rotationally connected with the module shell;

each driving assembly comprises a coil group, a magnet and a detection element, one of the coil group and the magnet is arranged in the module shell, the other one of the coil group and the magnet is arranged in the camera main body, the coil group comprises a first coil and a second coil, the first coil and the second coil are distributed at intervals along the distribution direction of two magnetic poles of the magnet, the first coil is arranged opposite to at least part of one magnetic pole of the magnet, the second coil is arranged opposite to at least part of the other magnetic pole of the magnet, the detection element is arranged between the first coil and the second coil, and the direction of current passing through the first coil is opposite to the direction of current passing through the second coil;

the detection element is used for detecting the offset angle of the driving assembly for driving the camera main body.

The embodiment of the application provides electronic equipment, which comprises the camera module.

In the embodiment of the application, the driving assembly is provided with a coil assembly, the coil assembly is provided with a first coil and a second coil, and the detection element is arranged between the first coil and the second coil. The current direction that first coil lets in and the current direction that the second coil lets in are opposite, therefore the magnetic field direction that first coil produced and the magnetic field direction that the second coil produced are opposite, and then make the magnetic field between first coil and the second coil offset each other to make detecting element receive the interference in the magnetic field that first coil and second coil produced less, and then improved detecting element's detection precision, in order to improve the shooting performance of camera module. In addition, adopt the drive mode of twin coil, the twin coil is for the monocoil, and the electric current dispersion will be less on two coils, so the heat that single coil produced, two coils dispersion relatively simultaneously, and the heat is difficult to the gathering, consequently more is favorable to the heat dissipation of camera module.

Drawings

Fig. 1 is an exploded view of a camera module disclosed in an embodiment of the present application;

fig. 2 is a schematic partial structural diagram of a camera module disclosed in the embodiment of the present application;

fig. 3 is a schematic view of a partial structure of a circuit board in the camera module disclosed in the embodiment of the present application.

Description of reference numerals:

100-module shell, 110-shell frame, 120-first cover plate, 121-second avoidance hole, 130-second cover plate,

200-camera main body, 210-first bracket, 211-bracket main body, 2111-first avoidance hole, 212-first connecting arm, 213-second connecting arm, 220-second bracket, 230-camera,

300-drive assembly, 310-coil assembly, 311-first coil, 312-second coil, 320-magnet, 330-detection element,

400-circuit board, 410-first board section, 420-second board section,

500-flexible circuit board.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

The following describes the camera module provided in the embodiments of the present application in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1 to 3, an embodiment of the present application discloses a camera module, which is applied to an electronic device. The disclosed camera module includes a module case 100, a camera main body 200, and at least one driving assembly 300.

The module case 100 provides an installation basis for the camera main body 200 and the driving assembly 300 of the camera module and other constituent components. The module case 100 has an inner cavity in which at least a part of the camera main body 200 is located. The camera body 200 is rotatably coupled to the module case 100.

Each driving assembly 300 includes a coil set 310, a magnet 320, and a detecting element 330, and one of the coil set 310 and the magnet 320 is disposed in the module case 100, and the other is disposed in the camera main body 200. When the coil assembly 310 is energized, an ampere force is generated in the magnetic field generated by the magnet 320, and the ampere force can drive the camera body 200 to rotate. The direction of the ampere force generated by the coil assembly 310 can be determined according to the left-hand rule, which is not described herein.

The coil assembly 310 includes a first coil 311 and a second coil 312, the first coil 311 and the second coil 312 are spaced apart along a direction of distribution of two poles of the magnet 320, the first coil 311 is disposed opposite to at least a portion of one pole of the magnet 320, and the second coil 312 is disposed opposite to at least a portion of the other pole of the magnet 320. For example, the first coil 311 may be disposed opposite at least a portion of the N-pole of the magnet 320, and the second coil 312 may be disposed opposite at least a portion of the S-pole of the magnet 320. It should be noted that the directions of the ampere forces generated by the first coil 311 and the second coil 312 are opposite to each other, so that the camera body 200 can be driven to rotate, and the direction of the current applied to the first coil 311 is opposite to the direction of the current applied to the second coil 312.

The detecting element 330 is disposed between the first coil 311 and the second coil 312, and the detecting element 330 is used for detecting an offset angle of the driving assembly 300 driving the camera body 200. The detecting element 330 can measure the offset angle of the camera main body 200 in real time, thereby ensuring the anti-shake effect of the camera module. The detecting element 330 may be a hall chip, but may also be other types of chips, which is not limited herein.

In the specific operation process, when the gyroscope inside the electronic device or the camera module detects the inclination of the camera module, the gyroscope transmits data such as the inclination angle of the camera module to the control chip inside the camera module or the electronic device, the control chip inputs corresponding angle compensation amount, and the control chip outputs corresponding current, so that the control coil group 310 is electrified to drive the camera main body 200 to rotate.

When the camera module rotates, the detection element 330 can detect the offset angle of the camera main body 200, and detection signals can be fed back to the control chip, so that the offset angle of the camera main body 200 is corrected, the closed-loop control of camera shake prevention is realized, and the shake prevention accuracy of the camera module is improved.

In the embodiment disclosed in the present application, the current direction that first coil 311 lets in is opposite to the current direction that second coil 312 lets in, therefore the magnetic field direction that first coil 311 produced is opposite to the magnetic field direction that second coil 312 produced, and then make the magnetic field between first coil 311 and the second coil 312 offset each other, thereby make detection element 330 receive the interference in the magnetic field that first coil 311 and second coil 312 produced less, and then improved detection element 330's detection precision, in order to improve the shooting performance of camera module.

In addition, the coil assembly 310 adopts a double-coil driving mode, and for a single coil, current is dispersed on the two coils, so that heat generated by the single coil is small, and meanwhile, the two coils are dispersed relatively, and heat is not easy to gather, thereby being more favorable for heat dissipation of the camera module. In addition, the current introduced by each coil is also smaller than the current introduced by a single coil in the background technology, so that the current resistance requirement is reduced, the coil can be suitable for thinner coils, and the occupied space of the coil is further reduced.

It should be noted that the magnetic fields generated by the first coil 311 and the second coil 312 are generated by energized coils, and therefore the principle is electromagnetic, and the directions of the magnetic fields generated by the first coil 311 and the second coil 312 can be determined by the right-hand screw rule.

To further reduce the influence of the magnetic field generated by the coil assembly 310 on the sensing element 330. In another alternative embodiment, the end of the first coil 311 near the second coil 312 may be a first end, and the end of the second coil 312 near the first coil 311 may be a second end, with the first end and the second end being oppositely disposed. The center of the sensing element 330 may be a first distance from the first end. The center of the sensing element 330 may be a second distance from the second end, and the first distance and the second distance may be equal. In this scheme, the center of the detection element 330 coincides with the center of the connection line of the first end and the second end, the magnetic field strengths of the center positions of the connection line of the first end and the second end are equal and opposite in direction, and the magnetic field strengths of the opposite magnetic fields are smaller after being offset, so that the interference of the detection element 330 by the magnetic fields generated by the first coil 311 and the second coil 312 is smaller, and the detection accuracy of the detection element 330 is further improved.

In addition, since the center position of the line connecting the first end and the second end also corresponds to the rotation center of the camera body 200, the detection element 330 can be positioned at the rotation center of the camera body 200, and the detection accuracy can be improved.

Further, the outline of the first coil 311 is the same as the outline of the second coil 312, and when the coil assembly 310 is energized, the current flowing through the first coil 311 has the same value as the current flowing through the second coil 312. In this embodiment, the first coil 311 and the second coil 312 have the same size, and the currents have the same value, so that the magnetic fields generated by the coils have the same magnitude and opposite directions, and therefore the magnetic fields generated by the coils can be completely cancelled, thereby further improving the detection accuracy of the detection element 330.

In addition, since the first coil 311 and the second coil 312 generate two forces having the same magnitude and opposite directions, the rotational accuracy of the camera body 200 is improved. Alternatively, the first coil 311 and the second coil 312 may be enameled wires, but other types of wires may also be used, and the invention is not limited herein.

In order to further improve the anti-shake performance of the camera module, in another alternative embodiment, the number of the driving assemblies 300 may be at least two, and at least two driving assemblies 300 drive the camera main body 200 to rotate in at least two directions. In this scheme, camera main part 200 can rotate in at least two directions, and then has increased camera main part 200's turned angle, and then has improved the anti-shake performance of camera module.

Further, at least two driving assemblies 300 may be located at adjacent both sides of the module case 100. In this scheme, coil assembly 310 or magnet 320 distribute and set up in different sides to make adjacent coil assembly 310 and magnet 320's distance far away, thereby make adjacent coil assembly 310 and magnet 320 be difficult to influence each other, and then improve the reliability of camera module.

In order to prevent that the inside ambient temperature of camera module is higher to influence the shooting effect of camera module, the inside temperature detection piece that is provided with of camera module, temperature detection piece detect the ambient temperature of camera module. Because the camera module is set up in electronic equipment, the higher ambient temperature that also can cause in the camera module of the higher temperature in the electronic equipment is higher, consequently can't judge that camera module self temperature is higher or the temperature in the electronic equipment is higher to the ambient temperature's of the camera module accuracy that detects is relatively poor.

Based on this, in another optional embodiment, the camera module disclosed in this application may further include an impedance detection component, and in a case where one of the at least two coil sets 310 drives the camera to rotate, the impedance detection component is configured to detect an impedance value of the other one, and obtain the temperature of the camera module according to the impedance value. One of the coil sets 310 may be a main working coil, that is, the camera body 200 is driven to rotate. The other coil set 310 may be used as a temperature detection coil for detecting temperature.

The specific principle is that, because the coil set 310 for detecting temperature is not the main operating coil, the current inside it is small or no current. The impedance value of the coil assembly 310 may vary according to the ambient temperature change in the camera module.

In a specific operation process, the corresponding numerical relationship between the resistance value and the ambient temperature can be stored in the control chip, and the corresponding ambient temperature is selected from the corresponding numerical relationship between the resistance value and the ambient temperature through the detected resistance value. The ambient temperature at this time is the ambient temperature of the camera module. The corresponding values of the impedance value and the ambient temperature can be obtained through a large number of experiments, and are not described in detail herein.

In this scheme, coil assembly 310 is located the camera module, and its impedance value receives the ambient temperature's of camera module influence great, and the temperature value that consequently its detected is more similar to the ambient temperature of camera module, and then has improved the detection precision of the ambient temperature of camera module to improve the security and the reliability of camera module.

Alternatively, the impedance detection component may be a resistor or a reactor, and may also be other components for detecting impedance, which is not limited herein.

When the ambient temperature of camera module is higher, optical structure, focus etc. in the camera module change easily, and then cause the shooting effect relatively poor. In order to make the camera module have better shooting effect, when detecting that the camera module temperature is higher, can fall the frame processing to the image of camera module, perhaps carry out image shooting again after physically cooling down to the camera module.

In another optional embodiment, the impedances of the first coil 311 and the second coil 312 in the coil assembly 310 for detecting the temperature can be separately detected, and then the average value of the two detected impedance values is calculated, so that the impedance average value of the two coils is obtained, and the ambient temperature value of the camera module is obtained by using the impedance average value, at this time, the accuracy of the detected impedance value of the coil assembly 310 can be improved, and then the accuracy of the ambient temperature of the camera module is improved, so that the ambient temperature of the camera module is detected more accurately.

In order to further simplify the structure of the camera module, in another alternative embodiment, the camera module disclosed in the present application may further include a circuit board 400, and the at least two coil sets 310 and the at least two detection elements 330 may be disposed on the circuit board 400 and electrically connected to the circuit board 400. At this time, the circuit board 400 is used to control the at least two coil sets 310 and the at least two sensing elements 330. In this scheme, at least two coil groups 310 are connected by using the same circuit board 400, so that the circuit board 400 does not need to be separately configured for each coil group 310, and the structure of the camera module is simpler and more compact.

Alternatively, the circuit board 400 may include a first board segment 410 and a second board segment 420, and the first board segment 410 and the second board segment 420 are connected and electrically connected. The first plate segment 410 is perpendicular to the second plate segment 420. One of the coil sets 310 and its corresponding sensing element 330 may be disposed on the first plate segment 410, and the other coil set 310 and its corresponding sensing element 330 may be disposed on the second plate segment 420. At this time, two driving assemblies 300 are disposed on two board segments of the circuit board 400. Therefore, the coil groups 310 or the magnets 320 are distributed on different side surfaces, so that the adjacent coil groups 310 and the adjacent magnets 320 are far away from each other, the adjacent coil groups 310 and the adjacent magnets 320 are not easily influenced with each other, and the reliability of the camera module is improved. Of course, the circuit board 400 may have other structures, and is not limited herein.

In order to realize the rotation of the camera head body 200 in at least two directions, a specific structure of the camera head body 200 is disclosed herein, but of course, other structures are also possible, and the present disclosure is not limited thereto. Specifically, the camera body 200 may include a first bracket 210, a second bracket 220, and a camera 230, the second bracket 220 being fixedly coupled to the camera 230, the first bracket 210 being rotatably coupled to the module case 100, the second bracket 220 being rotatably coupled to the first bracket 210. One of the driving assemblies 300 drives the first bracket 210 to rotate along the first axis; the other drive assembly 300 drives the second bracket 220 to rotate along a second axis, the first axis intersecting the second axis. Preferably, the first axis and the second axis are perpendicular.

At this time, when the camera 230 rotates along the first axis, one of the driving assemblies 300 drives the first bracket 210 to rotate, and since the second bracket 220 is connected with the module case 100 through the first bracket 210, the second bracket 220, and the camera 230 rotate together along the first direction, thereby achieving the rotation of the camera 230 in the first direction. When the camera 230 rotates in the second direction, the other driving assembly 300 drives the second bracket 220 to rotate, and since the second bracket 220 is fixedly connected with the camera 230, the camera 230 and the second bracket 220 rotate together in the second direction, so that the camera 230 rotates in the second direction.

This scheme can realize that camera 230 rotates on two directions, and then has increased camera 230's turned angle, and then has improved the anti-shake performance of camera module.

In addition, camera 230 sets up on second support 220, and second support 220 can be used for protecting camera 230 to make camera 230 be difficult to take place to collide with other parts of camera module at the pivoted in-process, and then can improve the reliability and the security of camera module.

Optionally, the second bracket 220 may be an annular plate, and the second bracket 220 may have a mounting hole formed therein, so as to be used for mounting the magnet 320 or the coil assembly 310, thereby reducing the volume of the camera module.

Alternatively, a first rotating member may be disposed between the first bracket 210 and the module case 100, so as to realize the rotating connection between the first bracket 210 and the module case 100. Of course, a second rotating member may be disposed between the second bracket 220 and the first bracket 210, so as to realize the rotating connection between the second bracket 220 and the first bracket 210. The first rotating member and the second rotating member may be a rotating structure such as a rotating shaft, a ball, etc., and of course, the first rotating member and the second rotating member may also be another rotating structure, which is not limited herein.

The first bracket 210 may have various structures. In an alternative embodiment, the first bracket 210 may include a bracket main body 211, a first connection arm 212 and a second connection arm 213, one end of the first connection arm 212 is fixedly connected to the bracket main body 211, and the other end of the first connection arm 212 extends into the inner cavity and is rotatably connected to the module housing 100. One end of the second connecting arm 213 is fixedly connected to the bracket body 211, and the other end of the second connecting arm 213 extends into the second bracket 220 and is rotatably connected to the second bracket 220. In this scheme, first linking arm 212 and second linking arm 213 are cantilever structure, and first linking arm 212 and second linking arm 213 can stretch into in first support 210 and the module casing 100 respectively to more be favorable to the miniaturized design of whole camera module.

In order to further improve the connection stability of the camera module, in another alternative embodiment, the first connection arm 212 and the second connection arm 213 may be two, the two first connection arms 212 are respectively distributed on two sides of the camera 230 in a pair of angles, and the two second connection arms 213 are respectively distributed on two sides of the camera 230 in another pair of angles. In this case, each first connecting arm 212 may be rotatably connected to one first rotating member, and each second connecting arm 213 may be rotatably connected to one second rotating member, which certainly improves the balance of the rotational support.

Optionally, the first connecting arm 212 and the second connecting arm 213 are both bent towards one side of the inner cavity, and at this time, the first connecting arm 212 and the second connecting arm 213 extend into the inner cavity, so that the first connecting arm 212 and the second connecting arm 213 are not easily exposed, and further the first connecting arm 212 and the second connecting arm 213 are not easily damaged, thereby prolonging the service life of the first support 210.

In the above embodiment, the holder main body 211 may be made of a transparent material, and light can penetrate through the holder main body 211 and enter the camera 230. However, the holder main body 211 with such a structure requires a high material, and thus it is inconvenient to control the manufacturing cost of the camera module. Based on this, in another optional embodiment, the bracket main body 211 may be provided with a first avoidance hole 2111, and the lens of the camera 230 may be disposed opposite to the first avoidance hole 2111. At this moment, the bracket main body 211 is of an open pore structure, so the bracket main body 211 is not limited to manufacturing materials, and the bracket main body 211 can be manufactured by using materials with lower price, thereby reducing the manufacturing cost of the camera module.

In addition, the holder main body 211 has an open-pore structure, so that the holder main body 211 does not affect the propagation of light, thereby improving the optical performance of the camera 230.

To improve the structural strength of the first bracket 210, in another alternative embodiment, the first bracket 210 is a one-piece structural member. This scheme can improve the joint strength of each part of first support 210, and then improves the structural strength of first support 210. Alternatively, the first support 210 may be obtained by stamping the outline shape of the first support 210 with a stamping machine and then bending the stamped substrate with a bending machine. Of course, the first bracket 210 may also be manufactured by other processes, which are not limited herein.

In the present embodiment, the structure of the module housing 100 may be various, and referring to fig. 1 again, in a specific embodiment, the module housing 100 may include a housing frame 110, a first cover plate 120 and a second cover plate 130, the first cover plate 120 may be disposed on a port at one end of the housing frame 110, and the second cover plate 130 may be disposed on a port at the other end of the housing frame 110. The first cover plate 120, the second cover plate 130 and the case frame 110 form an inner cavity. The first cover plate 120 is provided with a second avoiding hole 121, and the second avoiding hole 121 is communicated with the inner cavity. The second avoiding hole 121 is used to expose the lens of the camera body 200. The module case 100 having the above structure has good assemblability, facilitating the assembly of the camera main body 200.

Alternatively, the housing frame 110 and the first cover plate 120 may be connected by snapping, bonding, or welding, and the housing frame 110 and the second cover plate 130 may also be connected by snapping, bonding, or welding. Or in a specific embodiment, the housing frame 110 and the first cover plate 120 may be clamped, and the housing frame 110 and the second cover plate 130 are integrally formed. At this time, the case frame 110 is integrally formed with the second cover plate 130 without assembly, and the camera body 200 is fitted into the case frame 110 through a port at one end of the case frame 110 and then covered with the first cover plate 120, thereby completing assembly.

The camera module disclosed in the present application can also include flexible circuit board 500, and flexible circuit board 500's one end is connected with camera 230 electricity in the above, and flexible circuit board 500's the other end is connected with electronic equipment's mainboard electricity, and the light signal that camera 230 received this moment turns into the signal of telecommunication, transmits to electronic equipment's mainboard through flexible circuit board 500. Because the camera 230 needs to rotate, the flexible circuit board 500 needs to be longer, and then the camera 230 and the main board are not easy to have a larger pulling force.

Based on the camera module that this application embodiment disclosed, this application embodiment still discloses an electronic equipment, the electronic equipment who discloses include any embodiment of above the camera module.

The electronic device disclosed in the embodiment of the present application may be a smart phone, a tablet computer, an electronic book reader, a wearable device (e.g., a smart watch), an electronic game machine, and the like, and the specific kind of the electronic device is not limited in the embodiment of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A camera module, comprising a module housing (100), a camera body (200) and at least one drive assembly (300);

the module shell (100) is provided with an inner cavity, at least part of the camera main body (200) is positioned in the inner cavity, and the camera main body (200) is rotatably connected with the module shell (100);

wherein each driving component (300) comprises a coil assembly (310), a magnet (320) and a detection element (330), one of the coil assembly (310) and the magnet (320) is arranged on the module housing (100), the other is arranged on the camera body (200), the coil assembly (310) comprises a first coil (311) and a second coil (312), the first coil (311) and the second coil (312) are distributed at intervals along the distribution direction of the two magnetic poles of the magnet (320), the first coil (311) is arranged opposite to at least part of one magnetic pole of the magnet (320), the second coil (312) is arranged opposite to at least part of the other magnetic pole of the magnet (320), the detection element (330) is arranged between the first coil (311) and the second coil (312), the current flowing direction of the first coil (311) is opposite to the current flowing direction of the second coil (312) And the contrary;

wherein the detection element (330) is used for detecting the offset angle of the driving assembly (300) for driving the camera main body (200).

2. The camera module according to claim 1, wherein an end of the first coil (311) close to the second coil (312) is a first end, an end of the second coil (312) close to the first coil (311) is a second end, the first end and the second end are oppositely disposed, a distance between a center of the detecting element (330) and the first end is a first distance, a distance between the center of the detecting element (330) and the second end is a second distance, and the first distance and the second distance are equal.

3. The camera module according to claim 2, wherein the first coil (311) has the same contour as the second coil (312), and when the coil assembly (310) is energized, the current flowing in the first coil (311) has the same value as the current flowing in the second coil (312).

4. The camera module according to claim 1, wherein the number of the driving assemblies (300) is at least two, and at least two driving assemblies (300) drive the camera main body (200) to rotate in at least two directions.

5. The camera module of claim 4, wherein the at least two drive assemblies (300) are located on adjacent sides of the module housing (100).

6. The camera module according to claim 4, further comprising an impedance detection component, wherein in a case where one of the at least two coil assemblies (310) drives the camera (230) to rotate, the impedance detection component is configured to detect an impedance value of the other, and the ambient temperature of the camera module is obtained according to the impedance value.

7. The camera module according to claim 6, further comprising a circuit board (400), wherein the at least two coil sets (310) and the at least two detection elements (330) are disposed on the circuit board (400) and electrically connected to the circuit board (400).

8. The camera module according to claim 7, wherein the circuit board (400) comprises a first board segment (410) and a second board segment (420), the first board segment (410) and the second board segment (420) are connected and electrically connected, the first board segment (410) is perpendicular to the second board segment (420), one of the coil sets (310) and the corresponding detecting element (330) are disposed on the first board segment (410), and the other coil set (310) and the corresponding detecting element (330) are disposed on the second board segment (420).

9. The camera module according to claim 4, wherein the camera body (200) comprises a first bracket (210), a second bracket (220) and a camera (230), the second bracket (220) is fixedly connected with the camera (230), the first bracket (210) is rotatably connected with the module housing (100), and the second bracket (220) is rotatably connected with the first bracket (210); one of the driving assemblies (300) drives the first bracket (210) to rotate along a first axis; the other drive assembly (300) drives the second bracket (220) to rotate along a second axis, and the first axis and the second axis intersect.

10. The camera module according to claim 9, wherein the first bracket (210) comprises a bracket main body (211), a first connecting arm (212) and a second connecting arm (213), one end of the first connecting arm (212) is fixedly connected with the bracket main body (211), the other end of the first connecting arm (212) extends into the inner cavity and is rotatably connected with the module housing (100), one end of the second connecting arm (213) is fixedly connected with the bracket main body (211), and the other end of the second connecting arm (213) extends into the second bracket (220) and is rotatably connected with the second bracket (220).

11. The camera module according to claim 10, wherein the first connecting arms (212) and the second connecting arms (213) are two, the two first connecting arms (212) are respectively distributed on two sides of the camera (230) in a pair of angles, and the two second connecting arms (213) are respectively distributed on two sides of the camera (230) in another pair of angles.

12. The camera module according to claim 10, wherein the bracket main body (211) defines a first avoiding hole (2111), and a lens of the camera (230) is disposed opposite to the first avoiding hole (2111).

13. The camera module of claim 10, wherein the first bracket (210) is a unitary structural member.

14. The camera module according to claim 1, wherein the module housing (100) comprises a housing frame (110), a first cover plate (120) and a second cover plate (130), the first cover plate (120) is disposed on a port of one end of the housing frame (110), the second cover plate (130) is disposed on a port of the other end of the housing frame (110), the first cover plate (120), the second cover plate (130) and the housing frame (110) form the inner cavity, the first cover plate (120) is provided with a second avoiding hole (121), and the second avoiding hole (121) is communicated with the inner cavity.

15. An electronic device, comprising the camera module of any one of claims 1 to 14.