Foldable electronic device and control method thereof

Abstract

The invention provides foldable electronic equipment and a control method thereof. The control method comprises the following steps: detecting the variable quantity of physical parameters of the foldable electronic equipment; judging the change trend of the state of the foldable electronic equipment according to the variable quantity; and controlling the driving mechanism to drive the rotating shaft assembly to rotate according to the change trend, so that the foldable electronic equipment is unfolded or folded in the direction the same as the change trend. According to the control method of the foldable electronic equipment provided by the embodiment of the invention, the change of the folding state of the electronic equipment can be realized by detecting the change trend of the folding state of the electronic equipment and then controlling the driving mechanism to drive the electronic equipment to perform folding movement, so that assistance and convenient control of the folding process can be realized, and the control method has the advantages of simple structure, convenience in operation and the like. And the operation is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to a foldable electronic device and a control method thereof. Background Art

[0002] The folding process of conventional foldable electronic devices is generally manual. When a foldable screen electronic device is fully closed and opened, it is rather laborious and generally difficult to operate with one hand. To address this problem, some solutions also use power assist mechanisms to help the foldable screen to open, but generally require the setting of control buttons and other methods to achieve control, and the structure is relatively complex. Summary of the invention

[0003] In a first aspect, an embodiment of the present application provides a control method for a foldable electronic device, wherein the foldable electronic device comprises a housing mechanism and a driving mechanism, wherein the housing mechanism comprises a shaft assembly and a first housing and a second housing respectively connected to the shaft assembly, and the driving mechanism is used to drive the shaft assembly to rotate so as to change the angle between the first housing and the second housing; the control method comprises:

[0004] Detecting a change in a physical parameter of the foldable electronic device;

[0005] Determining a change trend of the state of the foldable electronic device according to the change amount; and

[0006] The driving mechanism is controlled to drive the rotating shaft assembly to rotate according to the change trend, so that the foldable electronic device is unfolded or folded in the same direction as the change trend.

[0007] In a second aspect, an embodiment of the present application provides a foldable electronic device, which includes a shell mechanism, a driving mechanism, a display screen assembly and a sensor; the shell mechanism includes a hinge assembly and a first shell and a second shell respectively connected to the hinge assembly; the driving mechanism is used to drive the hinge assembly to rotate to change the angle between the first shell and the second shell; the display screen assembly is respectively connected to the first shell and the second shell and is arranged across the hinge assembly, and the display screen assembly can be folded or flattened with the relative rotation of the first shell and the second shell; the sensor is used to detect the changing trend of the state of the foldable electronic device.

[0008] The control method of the foldable electronic device provided in the embodiment of the present application can change the folding state of the electronic device by detecting the changing trend of the folding state of the electronic device and then controlling the folding drive mechanism to drive the electronic device to fold and move, thereby achieving assistance and convenient control of the folding process, and has the characteristics of simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0010] Figure 1 is a schematic structural diagram of a foldable electronic device in an embodiment of the present application when it is in an unfolded state;

[0011] Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device in the embodiment when it is in a folded state;

[0012] Figure 3 yes Figure 1 A schematic cross-sectional view of the electronic device at position AA in the embodiment;

[0013] Figure 4 is a block diagram of an electronic device according to an embodiment of the present application;

[0014] Figure 5 is a flowchart of a control method for a foldable electronic device according to an embodiment of the present application;

[0015] Figure 6 is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application;

[0016] Figure 7 is a schematic structural diagram of a foldable electronic device according to another embodiment of the present application;

[0017] Figure 8 It is a flowchart of a control method for a foldable electronic device according to another embodiment of the present application.

[0018] Description of reference numerals:

[0019] Electronic device 10, housing mechanism 100, display screen assembly 200, circuit assembly 300, drive motor 400, sensor 500, controller 600;

[0020] A first housing 110, a second housing 120; a rotating shaft assembly 130;

[0021] Battery 310, control circuit board 320;

[0022] Magnetic body 510, Hall element 520;

[0023] RF circuit 910 , memory 920 , input unit 930 , display unit 940 , sensor 950 , audio circuit 960 , wifi module 970 , processor 980 , and power supply 990 . DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0025] The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0026] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] As used herein, "electronic devices" (or simply "terminals") include, but are not limited to, devices configured to receive / send communication signals via a wireline connection (e.g., via a public switched telephone network (PSTN), a digital subscriber line (DSL), a digital cable, a direct cable connection, and / or another data connection / network) and / or via a wireless interface (e.g., for a cellular network, a wireless local area network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and / or another communication terminal). Communication terminals configured to communicate via a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephones with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, organizers, calendars, and / or global positioning system (GPS) receivers; and conventional laptop and / or palmtop receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0028] The present application provides a foldable electronic device. Figures 1 to 3 , Figure 1 is a schematic structural diagram of a foldable electronic device in an embodiment of the present application when it is in an unfolded state; Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device in the embodiment when it is in a folded state; Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the electronic device in the embodiment at AA. It should be noted that the electronic device in the present application may include electronic devices with foldable flexible display screens such as mobile phones, tablet computers, laptop computers, and wearable devices. The electronic device 10 includes but is not limited to the following structures: a housing mechanism 100, a display screen assembly 200, and a circuit assembly 300.

[0029] For more details, please refer to Figure 2 and Figure 3 The housing mechanism 100 includes a first housing 110, a second housing 120 and a shaft assembly 130; the first housing 110 and the second housing 120 are respectively connected to the shaft assembly 130, and the first housing 110 and the second housing 120 can rotate with the shaft assembly 130; the detailed structure of the shaft assembly is within the scope of understanding of those skilled in the art and will not be repeated here. The display assembly 200 is respectively connected to the first housing 110 and the second housing 120 and is arranged across the shaft assembly 130. The display assembly 200 can rotate with the relative rotation (along the axis) of the first housing 110 and the second housing 120. Figure 3in the direction of the double arrow) and fold ( Figure 2 mid state) or flattened ( Figure 1 medium state).

[0030] Optionally, the circuit assembly 300 may include a battery 310 and a control circuit board 320, etc. In addition, the electronic device may also include a camera, a speaker, and various sensors, etc. The detailed features of this part are within the scope of understanding of those skilled in the art and will not be repeated here.

[0031] See also Figure 4 , Figure 4 It is a block diagram of the composition of an electronic device of an embodiment of the present application. The electronic device can be a foldable mobile phone, a tablet computer, a laptop computer, a wearable device, etc. The diagram of this embodiment takes a foldable mobile phone as an example. The structure of the electronic device 10 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (which may be the display screen assembly 200 in the above embodiment), a sensor 950, an audio circuit 960, a wifi module 970, a processor 980 (which may be the control circuit board 320 in the above embodiment) and a power supply 990 (which may be the battery 310 in the above embodiment), etc. Among them, the RF circuit 910, the memory 920, the input unit 930, the display unit 940, the sensor 950, the audio circuit 960 and the wifi module 970 are respectively connected to the processor 980; the power supply 990 is used to provide power to the entire electronic device 10.

[0032] Specifically, the RF circuit 910 is used to receive and send signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, which may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes an infrared sensor, a laser sensor, etc., for detecting user approach signals, distance signals, etc.; the speaker 961 and the microphone (or microphone) 962 are connected to the processor 980 through the audio circuit 960 for receiving and sending sound signals; the wifi module 970 is used to receive and transmit wifi signals, and the processor 980 is used to process data information of the electronic device. For the specific structural features of the electronic device, please refer to the relevant description of the above embodiment, which will not be described in detail here.

[0033] For the electronic device with the above structure, the present application embodiment provides a control method for a foldable electronic device, please refer to Figure 5 , Figure 5 1 is a flow chart of a control method of a foldable electronic device according to an embodiment of the present application. The control method includes but is not limited to the following steps.

[0034] Step S100, detecting a change in a physical parameter of the foldable electronic device.

[0035] Optionally, in this embodiment, detecting the change in the physical parameter of the foldable electronic device may be detecting the change in the physical parameter when the user bends the housing mechanism by hand.

[0036] See also Figure 6 , Figure 6 This is a simplified schematic diagram of the structure of a foldable electronic device according to an embodiment of the present application, wherein the electronic device in this embodiment further includes a driving mechanism, wherein the driving mechanism includes a driving motor 400, and the driving motor 400 is connected to a rotating shaft assembly 130 of the electronic device, and by driving the rotating shaft assembly 130 to rotate, the folding state of the electronic device is changed, wherein the specific connection method between the driving motor 400 and the rotating shaft assembly 130 can be a driving connection through gears or the like, and the detailed features of this part are within the understanding of those skilled in the art and will not be repeated here.

[0037] Please continue reading Figure 5 The control method in the embodiment of the present application further includes: step S200, judging the change trend of the state of the foldable electronic device according to the change amount.

[0038] Among them, detecting the change in the physical parameters of the foldable electronic device can specifically be detecting the change in the torque of the drive motor. In the embodiment of the present application, the changing trend of the folding state of the electronic device includes a closing trend and an opening trend. Specifically, it can be, for example, by detecting the relative position change between the stator and the mover of the drive motor 400, judging the changing trend of the folding state of the electronic device according to the relative position change. For example, when the drive motor 400 rotates passively, the coil cuts the magnetic lines of force of the permanent magnet and generates current. The motor determines the force and direction it is subjected to by detecting the coil current.

[0039] Please continue reading Figure 5 The control method in the embodiment of the present application also includes: step S300, controlling the driving mechanism to drive the rotating shaft assembly to rotate according to the change trend, so that the foldable electronic device is unfolded or folded in the same direction as the change trend.

[0040] Here, the electronic device folding in the same direction as the change trend means that if the electronic device was originally in a completely folded state ( Figure 2 If the user needs to open the folding screen, it is detected that the user bends the shells on both sides of the electronic device in the direction of opening, so the driving mechanism is controlled to drive the electronic device to fold in the direction of opening. If the electronic device is in the fully unfolded state ( Figure 1If the user needs to close (fold) the folding screen, it is detected that the user is bending the electronic device in a direction of closing, so the driving mechanism is controlled to drive the electronic device to fold in the direction of folding. If the electronic device is originally in a semi-folded state ( Figure 6 In the middle state), the user may need to open the electronic device to a larger angle or fold it to a smaller angle at this time, so the direction in which the user bends the electronic device (opening direction or closing direction) is detected, and the driving mechanism is controlled to drive the electronic device to fold in the corresponding direction.

[0041] In step S100, the relative rotation speed of the stator and the mover of the drive motor 400 may be detected, and in step S300, the folding change angle of the electronic device driven by the drive mechanism may be controlled according to the relative rotation speed of the stator and the mover of the drive motor. Specifically, the relative rotation speed of the shells on both sides when the user bends is different (reflected by the relative rotation speed of the stator and the mover of the drive motor), and correspondingly, the folding change angle of the electronic device driven by the drive mechanism is also different. For example, if the relative rotation speed of the shells on both sides when the user bends is large, the drive mechanism can be controlled to drive the electronic device to fold to a larger angle. Correspondingly, if the relative rotation speed of the shells on both sides when the user bends is small, the drive mechanism can be controlled to drive the electronic device to fold to a smaller angle. This method can make the folding angle control of the electronic device more precise and the control logic clearer.

[0042] In addition, in step S100, the relative rotation angle value between the stator and the mover of the drive motor 400 can also be detected, and the angle value is generated by the user's bending; in step S300, the folding change angle of the electronic device driven by the drive mechanism can be controlled according to the relative rotation angle value of the stator and the mover of the drive motor. Specifically, the user bends the different relative rotation angles of the shells on both sides (reflected as the relative rotation angle of the stator and the mover of the drive motor), and correspondingly, the folding change angle of the electronic device driven by the drive mechanism is also different. For example, if the user bends the shells on both sides at a larger relative rotation angle, the drive mechanism can be controlled to drive the electronic device to change a larger angle of folding. Correspondingly, if the user bends the shells on both sides at a smaller relative rotation angle, the drive mechanism can be controlled to drive the electronic device to change a smaller angle of folding. In some embodiments, it is also possible to preset and store a one-to-one correspondence between the relative rotation angle value of the stator and the mover of the drive motor and the folding change angle of the electronic device driven by the control drive mechanism, and then control the drive mechanism to drive the electronic device at different folding change angles according to the corresponding relationship. The detailed technical features of this part are within the scope of understanding of those skilled in the art and will not be described in detail here.

[0043] See also Figure 7 , Figure 7: is a schematic diagram of the structure of a foldable electronic device of another embodiment of the present application. Different from the above-mentioned embodiment, the electronic device in this embodiment includes a sensor 500, and the sensor 500 is used to detect the change trend of the folding state of the electronic device. Optionally, the sensor 500 in this embodiment includes a magnetic body 510 and a Hall element 520, the magnetic body 510 or the Hall element 520 is arranged on the output shaft of the driving motor 400, and the other is fixedly connected to the rotating shaft assembly 130 (in the figure of this embodiment, the magnetic body 510 is arranged on the output shaft of the driving motor 400, and the Hall element 520 is fixedly connected to the rotating shaft assembly 130. Of course, in some other embodiments, the positions of the two can be swapped, which is not specifically limited here), the magnetic body 510 can rotate with the output shaft of the driving motor 400, and the Hall element 520 is fixed. By sensing the change in the magnetic field of the magnetic body 510, the change in the physical parameters of the folding state of the electronic device is detected.

[0044] In addition, the electronic device in the embodiment of the present application also includes a controller 600, which can be a control motherboard of the electronic device, etc., and is not specifically limited here. The controller 600 is connected to the driving mechanism and the sensor 500, and controls the folding state of the foldable electronic device.

[0045] In step S100, the change value of the magnetic field strength may be detected by the Hall element, and the change value may include the change in the direction of the magnetic field and the change in the magnetic field strength, etc.; in step S300, the drive mechanism may be controlled to drive the electronic device to change the folding angle according to the change value of the magnetic field strength detected by the Hall element. Specifically, the relative rotation angles of the two side shells when the user bends are different, which is reflected in the different change values ​​of the magnetic field strength detected by the Hall element. Correspondingly, the folding change angle of the electronic device driven by the drive mechanism is also different. For example, if the relative rotation angle of the two side shells when the user bends is large (that is, the change value of the magnetic field strength is large), the drive mechanism can be controlled to drive the electronic device to change to a larger folding angle. Correspondingly, if the relative rotation angle of the two side shells when the user bends is small (that is, the change value of the magnetic field strength is small), the drive mechanism can be controlled to drive the electronic device to change to a smaller folding angle.

[0046] In addition, in step S100, the speed of change of the magnetic field strength can also be detected by a Hall element, and the detected change can include the change in the direction of the magnetic field and the value of the magnetic field strength; in step S300, the folding change angle of the electronic device driven by the driving mechanism can be controlled according to the speed of change of the magnetic field strength detected by the Hall element. Specifically, the relative rotation speeds of the shells on both sides when the user bends are different, which is reflected in the different speeds of change of the magnetic field strength detected by the Hall element. Correspondingly, the folding change angle of the electronic device driven by the driving mechanism is also different. For example, if the relative rotation speed of the shells on both sides when the user bends is large (that is, the speed of change of the magnetic field strength is large), the driving mechanism can be controlled to drive the electronic device to fold and change at a large angle. Correspondingly, if the relative rotation speed of the shells on both sides when the user bends is small (that is, the speed of change of the magnetic field strength is small), the driving mechanism can be controlled to drive the electronic device to fold and change at a small angle.

[0047] In some embodiments, it is also possible to preset and store a one-to-one correspondence between the speed of change of the magnetic field strength detected by the Hall element and the folding change angle of the electronic device driven by the control driving mechanism, and then control the driving mechanism to drive the electronic device at different folding change angles according to the corresponding relationship.

[0048] See also Figure 8 , Figure 8 Detailed description of the invention is given in detail below: FIG. 1 is a flow chart of a control method for a foldable electronic device according to another embodiment of the present invention, wherein the control method in this embodiment includes but is not limited to the following steps.

[0049] Step S100, detecting a change in a physical parameter of the foldable electronic device.

[0050] Specifically, it can be detecting the change in physical parameters when the user bends the housing mechanism by hand. The specific change in physical parameters includes the change in torque of the drive motor, which can be detecting the relative rotation angle and relative rotation speed of the stator and mover of the drive motor in the aforementioned embodiment, and detecting the folding change angle of the foldable electronic device through a sensor, etc., which will not be listed and described in detail here.

[0051] Please continue reading Figure 8 The control method in this embodiment also includes step S210. If the change in the physical parameter satisfies condition 1, that is, the physical parameter becomes larger and the change reaches the first threshold, it is determined that the state change trend of the foldable electronic device is an unfolding trend, and then the process enters step S310 to control the driving mechanism to drive the shaft assembly to rotate in the direction of unfolding the foldable electronic device.

[0052] Please continue reading Figure 8The control method in this embodiment also includes step S220. If the change in the physical parameter satisfies condition 2, that is, the physical parameter becomes smaller and the change reaches the second threshold, it is determined that the state change trend of the foldable electronic device is a folding trend, and then the process proceeds to step S320 to control the driving mechanism to drive the shaft assembly to rotate in the direction of folding the foldable electronic device.

[0053] Please continue reading Figure 8 , the control method in this embodiment further includes step S230, if the change amount of the physical parameter does not meet either condition 1 or condition 2, then repeat step S100 to re-detect the change amount of the physical parameter of the foldable electronic device. In this case, the change amount of the physical parameter may be one of the following: the physical parameter does not change, or the change amount is zero; the physical parameter increases and the change value is less than the first threshold; the physical parameter decreases and the change value is less than the second threshold. Wherein, the first and second thresholds are both absolute values ​​greater than 0.

[0054] The control method of the foldable electronic device provided in the embodiment of the present application can change the folding state of the electronic device by detecting the change trend of the folding state of the electronic device and then controlling the driving mechanism to drive the electronic device to fold and move, thereby achieving assistance and convenient control of the folding process, and has the characteristics of simple structure and convenient operation. In addition, by setting different control logics, the control process can be made more refined and more operable.

[0055] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A control method for a foldable electronic device, wherein the foldable electronic device comprises a housing mechanism and a driving mechanism, wherein the housing mechanism comprises a shaft assembly and a first housing and a second housing respectively connected to the shaft assembly, wherein the driving mechanism is used to drive the shaft assembly to rotate so as to change the angle between the first housing and the second housing, wherein: The control method comprises: Detecting a change in a physical parameter of the foldable electronic device; Determining a change trend of the state of the foldable electronic device according to the change amount; and The driving mechanism is controlled to drive the rotating shaft assembly to rotate according to the change trend, so that the foldable electronic device is unfolded or folded in the same direction as the change trend.

2. The control method according to claim 1, characterized in that: The detecting the change in the physical parameter of the foldable electronic device comprises: Detecting the change in the physical parameter when the user moves the shell mechanism with his hand.

3. The control method according to claim 1, characterized in that: The determining the state change trend of the foldable electronic device according to the change amount includes: if the physical parameter increases and the change amount reaches a first threshold, determining that the state change trend of the foldable electronic device is an unfolding trend; The controlling the driving mechanism to drive the rotating shaft assembly to rotate according to the change trend includes: controlling the driving mechanism to drive the rotating shaft assembly to rotate in a direction to unfold the foldable electronic device.

4. The control method according to claim 1, characterized in that: The determining the state change trend of the foldable electronic device according to the change amount includes: if the physical parameter becomes smaller and the change amount reaches a second threshold, determining that the state change trend of the foldable electronic device is a folding trend; The controlling the driving mechanism to drive the rotating shaft assembly to rotate according to the change trend includes: controlling the driving mechanism to drive the rotating shaft assembly to rotate in a direction to fold the foldable electronic device.

5. The control method according to any one of claims 1 to 4, characterized in that: The driving mechanism comprises a driving motor, and the driving motor comprises a stator and a mover rotatable relative to the stator; The detecting the change in the physical parameter of the foldable electronic device includes: detecting the change in the torque of the driving motor.

6. The control method according to claim 5, characterized in that: The detecting the torque change of the driving motor comprises: detecting a relative position change between a stator and a mover of the driving motor; and judging a state change trend of the folding state of the electronic device according to the relative position change.

7. The control method according to claim 6, characterized in that: The detecting of the torque variation of the driving motor comprises: detecting the relative rotation speed between the stator and the mover of the driving motor; and controlling the folding variation angle of the driving mechanism driving the electronic device according to the relative rotation speed between the stator and the mover of the driving motor.

8. The control method according to claim 6, characterized in that: The detecting of the torque variation of the driving motor comprises: detecting the relative rotation angle value between the stator and the mover of the driving motor; and controlling the folding variation angle of the driving mechanism driving the electronic device according to the relative rotation angle value between the stator and the mover of the driving motor.

9. The control method according to any one of claims 1 to 4, characterized in that: The electronic device also includes a sensor, which is used to detect a change in a physical parameter of the foldable electronic device.

10. The control method according to claim 9, characterized in that: The sensor includes a magnetic body and a Hall element. One of the magnetic body and the Hall element is arranged on the driving mechanism, and the other is fixedly connected to the rotating shaft assembly. The Hall element detects the change in the physical parameters of the foldable electronic device by sensing the change in the magnetic field of the magnetic body.

11. The control method according to claim 10, characterized in that: The control method comprises: detecting the change value of the magnetic field strength by the Hall element; and controlling the driving mechanism to drive the electronic device to change the folding angle according to the change value of the magnetic field strength.

12. The control method according to claim 10, characterized in that: The control method comprises: detecting the change speed of the magnetic field strength by the Hall element; and controlling the driving mechanism to drive the electronic device to change the folding angle according to the change speed of the magnetic field strength.

13. A foldable electronic device, characterized in that: The foldable electronic device includes a shell mechanism, a driving mechanism, a display screen assembly and a sensor; the shell mechanism includes a hinge assembly and a first shell and a second shell respectively connected to the hinge assembly; the driving mechanism is used to drive the hinge assembly to rotate so as to change the angle between the first shell and the second shell; the display screen assembly is respectively connected to the first shell and the second shell and is arranged across the hinge assembly, and the display screen assembly can be folded or flattened with the relative rotation of the first shell and the second shell; the sensor is used to detect the changing trend of the state of the foldable electronic device.

14. The foldable electronic device according to claim 13, characterized in that: The foldable electronic device further comprises a controller, which is connected to the driving mechanism and the sensor and uses the control method described in any one of claims 1 to 12 to control the folding state of the foldable electronic device.

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