Foldable electronic equipment

Abstract

The utility model provides foldable electronic equipment, which comprises a first shell, a second shell, a hinge and a flexible circuit board, and is characterized in that the hinge is connected with the first shell and the second shell; a first battery is arranged in the first shell, a second battery is arranged in the second shell, and the first battery and the second battery are connected through a power supply wire in the flexible circuit board; the foldable electronic equipment further comprises a first capacitor and a capacitance sensor, wherein the first capacitor is connected between the power supply wire and the capacitance sensor. If the power supply wire is in short circuit with the conductive part, the first capacitor is connected to the conductive part only through the power supply wire; if the power supply wire is not in short circuit with the conductive piece, the first capacitor is not connected to the conductive piece through the power supply wire, or the first capacitor is connected to the conductive piece through the power supply wire and other devices or circuits comprising capacitors, so that the capacitance value detected by the capacitance sensor under the two conditions is obviously changed; therefore, whether the power line is short-circuited with the conductive member can be determined.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices, and in particular to a foldable electronic device. BACKGROUND

[0002] The foldable electronic device comprises a first shell, a second shell, a hinge and a flexible circuit board. The first shell and the second shell are connected by the hinge. Under the action of the hinge, the first shell and the second shell can produce relative rotation, movement and the like. The flexible circuit board passes through the hinge, so as to realize the connection between the first battery in the first shell and the second battery in the second shell. However, in actual use, metal debris is easy to enter and remain at the position of the hinge, and the flexible circuit board is easy to be abraded. In this way, the abraded position is connected with the conductive part through the metal debris, so as to cause the short circuit between the power supply line in the flexible circuit board and the conductive part, and further cause the short circuit between the power supply line and the ground, thereby causing the flexible circuit board to be burned out, and finally causing the foldable electronic device to be damaged and unable to be used. CONTENT OF THE UTILITY MODEL

[0003] The present application provides a foldable electronic device for detecting whether the flexible circuit board is short-circuited.

[0004] In a first aspect, the present application provides a foldable electronic device, which comprises a first shell, a second shell, a hinge and a flexible circuit board. The hinge connects the first shell and the second shell. The first shell is provided with a first battery, and the second shell is provided with a second battery. The flexible circuit board passes through the hinge, and the first battery and the second battery are connected by a power supply line in the flexible circuit board. The foldable electronic device further comprises a first capacitor and a capacitor sensor. The first capacitor is connected between the power supply line and the capacitor sensor. If the power supply line is short-circuited with a conductive part, then the first capacitor is only connected to the conductive part through the power supply line. If the power supply line is not short-circuited with the conductive part, then the first capacitor is not connected to the conductive part through the power supply line, or the first capacitor is connected to the conductive part through the power supply line and other devices or circuits including capacitors. Therefore, the capacitance value detected by the capacitor sensor changes obviously in the two cases, so that whether the power supply line is short-circuited with the conductive part can be judged based on the detected capacitance value change, and the detection of whether the flexible circuit board is short-circuited is realized.

[0005] Optionally, the foldable electronic device further comprises a controller and a cut-off control module arranged in the first shell, the controller is connected with the capacitance sensor and the cut-off control module respectively; the first shell is provided with a first circuit board, and the cut-off control module is further connected with the first battery and the first circuit board respectively; the controller is configured to output a control signal according to the capacitance value detected by the capacitance sensor; the cut-off control module is configured to control the connection state of the first battery and the first circuit board according to the control signal output by the controller; when the control signal is at a first level, the first battery and the first circuit board are connected; and when the control signal is at a second level, the first battery and the first circuit board are disconnected. In this way, when it is determined that the power supply wire is short-circuited with the conductive part, the first cut-off control module can control the first circuit board and the first battery to be disconnected, thereby realizing protection in the case of short-circuit, avoiding the heating or even burning of the through-axis FPC (flexible printed circuit board) caused by short-circuit, and thus avoiding the damage of the foldable electronic device and improving the safety of the foldable electronic device.

[0006] The controller is specifically configured to control the output control signal to be at the second level in response to the capacitance value detected by the capacitance sensor exceeding the preset value. In this way, the fluctuation of the detected capacitance value caused by abnormal interference can be avoided, and thus the accuracy of the judgment result caused by abnormal fluctuation can be avoided.

[0007] The cut-off control module comprises a first switch, a control end of the first switch is connected with the controller, a first end of the first switch is connected with the first circuit board, and a second end of the first switch is connected with the first battery. Therefore, the control signal output by the controller can be used to control the closing state of the first switch, the first switch is closed when the control signal is at the first level, so that the first circuit board and the first battery are connected, and the first switch is opened when the control signal is at the second level, so that the first circuit board and the first battery are disconnected, thereby realizing the function of the first cut-off control module through the first switch and realizing protection in the case of short-circuit.

[0008] At this time, the foldable electronic device further comprises a second switch and a second circuit board arranged in the second shell, a control end of the second switch is connected with the controller, a first end of the second switch is connected with the second circuit board, and a second end of the second switch is connected with the second battery; the flexible printed circuit board has a control wire, and the control wire is connected with the control end of the second switch and the controller. In this way, when short-circuit occurs, the controller can also control the second switch, the second switch is also closed when the first switch is closed, so that the second circuit board and the second battery are connected, and the second switch is also opened when the first switch is opened, so that the second circuit board and the second battery are disconnected, thereby realizing protection in the case of short-circuit in the second shell and protecting the devices and circuits in the second shell, and further improving the safety and reliability of the foldable electronic device.

[0009] Further, the cut-off control module further comprises a third switch and a fourth switch; a control end of the third switch is connected with the controller, a first end of the third switch is connected with a control end of the fourth switch, and a second end of the third switch is connected with the first constant voltage signal end; a first end of the fourth switch is used for being connected with the first battery, and a second end of the fourth switch is connected with the control end of the first switch. In this way, through the cooperation of the first control circuit and the first switch, the function of the first cut-off control module can be realized, and short circuit protection can be realized when the power supply wire and the conductive part are short-circuited. Moreover, when the first control circuit controls the first switch, the voltage provided by the first battery can be used to control the closing state of the first switch, and the controller does not need to directly output a threshold voltage for controlling the closing of the first switch, so that the cost and power consumption of the controller can be reduced, and the leakage can also be reduced, thereby the performance of the foldable electronic device can be improved. In addition, the first control circuit and the first switch can be structures that already exist in the foldable electronic device, and are used for calibration before leaving the factory. The embodiment of the application utilizes the first control circuit and the first switch that already exist to realize the function of the first cut-off control module, so that the original devices can be fully utilized to realize more functions, and on the basis of making the minimum change to the foldable electronic device, the detection and protection of short circuit are realized, thereby the cost of the foldable electronic device can be reduced.

[0010] At this time, the foldable electronic device further comprises a second switch and a second circuit board arranged in the second shell, a control end of the second switch is used for being connected with the control end of the first switch, a first end of the second switch is connected with the second circuit board, and a second end of the second switch is connected with the second battery; the flexible circuit board has a control wire, and the control wire is connected with the control end of the second switch and the control end of the first switch. In this way, when the short circuit occurs, the first control circuit can also control the second switch, and when the first switch is closed, the second switch is also closed, so that the second circuit board is in communication with the second battery, and when the first switch is disconnected, the second switch is also disconnected, so that the second circuit board is disconnected from the second battery, thereby the protection when the short circuit occurs can also be performed in the second shell, the devices and circuits in the second shell are protected, and the safety and reliability of the foldable electronic device are further improved.

[0011] Alternatively, the foldable electronic device further comprises a second switch, a fifth switch and a sixth switch arranged in the second housing; a control end of the fifth switch is configured to be connected with the controller, a first end of the fifth switch is connected with a control end of the sixth switch, and a second end of the fifth switch is connected with the first constant voltage signal end; the sixth switch has a first end configured to be connected with the second battery and a second end connected with a control end of the second switch; the flexible circuit board is provided with a control trace connected with the control end of the fifth switch and the controller. If the fifth switch and the sixth switch are regarded as a second control circuit, and the second switch and the second control circuit are regarded as a second cut-off control module, through the cooperation of the second control circuit and the second switch, short circuit protection can be realized when the power supply trace is short-circuited with the conductive part. Moreover, when the second control circuit controls the second switch, the voltage provided by the second battery can be used to control the closing state of the second switch, without the controller directly outputting a threshold voltage for controlling the closing of the second switch, so that the cost and power consumption of the controller can be reduced, and the leakage can also be reduced, thereby improving the performance of the foldable electronic device. In addition, the second control circuit and the second switch can be structures that already exist in the foldable electronic device and are used for calibration before leaving the factory. The second control circuit and the second switch are used to realize the function of the second cut-off control module in the embodiment of the application, so that the original devices can be fully utilized to realize more functions, and the detection and protection of short circuit can be realized on the basis of minimal modification of the foldable electronic device, thereby facilitating the reduction of the cost of the foldable electronic device.

[0012] Optionally, the controller is connected with the capacitance sensor through an I 2 C bus or an SPI bus, so that data transmission between the controller and the capacitance sensor can be realized, thereby realizing the detection of short circuit.

[0013] Optionally, the foldable electronic device further comprises a display screen, and the controller is further connected with the display screen; the controller is further configured to: control the display screen to display prompt information according to the capacitance value detected by the capacitance sensor, the prompt information including whether to enter the short circuit protection program; and control the output control signal to be the second level in response to receiving a determination instruction for entering the short circuit protection program. In this way, the user can be prompted through the display screen to determine whether to enter the short circuit protection program, so that the user can be provided with preparation time to avoid data loss caused by sudden entry into the short circuit protection program, thereby improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 a schematic diagram of an unfolded state of the foldable electronic device provided in the embodiment of the application;

[0015] Figure 2 a schematic diagram of a folded state of the foldable electronic device provided in the embodiment of the application;

[0016] Figure 3 A structural schematic diagram of a foldable electronic device provided for an embodiment of the present application;

[0017] Figure 4 A schematic diagram provided for an embodiment of the present application;

[0018] Figure 5 A structural schematic diagram of another foldable electronic device provided for an embodiment of the present application;

[0019] Figure 6 A structural schematic diagram of still another foldable electronic device provided for an embodiment of the present application;

[0020] Figure 7a A structural schematic diagram of a foldable electronic device based on the structure shown in Figure 5

[0021] A structural schematic diagram of a foldable electronic device based on the structure shown in Figure 7b Figure 6 A structural schematic diagram of a foldable electronic device based on the structure shown in

[0022] Figure 8 A structural schematic diagram of a foldable electronic device based on the structure shown in Figure 7b

[0023] Reference signs:

[0024] 101 - first housing, 1011 - first battery, 102 - second housing, 1021 - second battery, 200 - server, 10 - hinge, 20 - flexible circuit board, 21 - power supply trace, 22 - control trace, 30 - capacitance sensor, 41 - attitude sensor, 42 - Hall sensor, 51 - first cut-off control module, 511 - first control circuit, 52 - second cut-off control module, 522 - second control circuit, C1 - first capacitor, C2 - second capacitor, Q1 - first switch, Q2 - second switch, Q3 - third switch, Q4 - fourth switch, Q5 - fifth switch, Q6 - sixth switch, R1 - first resistor, R2 - second resistor, R3 - third resistor, R4 - fourth resistor, R5 - fifth resistor, R6 - sixth resistor, R7 - seventh resistor, R8 - eighth resistor, S1 - first constant voltage signal terminal. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0026] ​​It should be noted that the same reference numerals in the accompanying drawings of this application denote the same or similar structures, and therefore repeated descriptions of them will be omitted. Terms expressing position and direction described in this application are illustrative based on the accompanying drawings, but may be modified as needed, and all such modifications are included within the scope of protection of this application. The accompanying drawings of this application are for illustrating relative positional relationships only and do not represent actual scale.

[0027] It should be noted that, in this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner. In the embodiments of this application, the words "first," "second," etc., do not limit the number or order.

[0028] To facilitate understanding of the technical solutions provided in the embodiments of this application, their application scenarios are first described below. The technical solutions provided in the embodiments of this application can be applied to foldable electronic devices. Specifically, foldable electronic devices are electronic devices whose shape can be changed by folding, rotating, etc. Under different usage conditions, users can fold and unfold foldable electronic devices to meet their different needs.

[0029] When users need to carry foldable electronic devices with them, they can fold them to reduce their size and improve portability; when using foldable electronic devices, users can unfold them to provide a larger display and operating area, thereby improving ease of use. In practical applications, foldable electronic devices can be categorized in various ways, such as mobile phones, tablets, laptops, and e-readers.

[0030] Taking mobile phones as an example, such as Figure 1 As shown, the mobile phone may include a first housing 101 and a second housing 102 connected by a hinge 10, and a flexible screen ( Figure 1 (Not shown in the image) can be disposed on the surfaces of the first housing 101 and the second housing 102, and under the action of the hinge 10, relative rotation and movement can occur between the first housing 101 and the second housing 102. For example... Figure 1 As shown, when the phone is unfolded, the flexible screen can provide a larger display area and operating area to improve usability. Figure 2 As shown, when a phone is folded, its size can be reduced, thus improving its portability.

[0031] And, as Figure 1As shown, a first battery 1011 is disposed in the first housing 101, and a second battery 1021 is disposed in the second housing 102. The first battery 1011 and the second battery 1021 are connected by a flexible printed circuit (FPC) 20. Since the first battery 1011 and the second battery 1021 are located in different housings, the flexible printed circuit 20 needs to pass through the hinge 10. In this case, the flexible printed circuit 20 can also be referred to as a through-hinge FPC. Through this through-hinge FPC, the first battery 1011 and the second battery 1021 can be connected in parallel to facilitate the loads in the first housing 101 respectively. Figure 1 (not shown in the image), and the load in the second housing 102 ( Figure 1 Power supply (not shown). The load in the first housing 101 may include, but is not limited to, display devices, control devices, and circuit devices. Similarly, the load in the second housing 102 may also include, but is not limited to, display devices, control devices, and circuit devices. The specific load can be set according to actual conditions and is not specifically limited here. Furthermore, when supplying power to the loads in the first housing 101 and the second housing 102, it can be configured such that the first battery 1011 and the second battery 1021 are connected in parallel through a through-shaft FPC to supply power to each load together. This increases the power supplied to the loads and meets their power requirements.

[0032] However, in actual use, metal debris can easily get into and remain at the hinge location, and the through-axis FPC is prone to wear. As a result, the worn area can connect with the conductive parts through the metal debris, causing a short circuit between the power lines and conductive parts in the through-axis FPC, which in turn can burn out the through-axis FPC and ultimately damage the foldable electronic device, rendering it unusable.

[0033] Based on this, the embodiment of the present application provides a foldable electronic device to detect whether the flexible circuit board has a short circuit. Exemplarily, the foldable electronic device provided by the embodiment of the present application comprises: a first shell, a second shell, a hinge, and a flexible circuit board, the hinge connecting the first shell and the second shell; a first battery is arranged in the first shell, a second battery is arranged in the second shell, the flexible circuit board passes through the hinge, and the first battery and the second battery are connected through power supply lines in the flexible circuit board; the foldable electronic device further comprises a first capacitor and a capacitor sensor, the first capacitor being connected between the power supply lines and the capacitor sensor. If the power supply lines are short-circuited with the conductive part, then the first capacitor will only be connected to the conductive part through the power supply lines; if the power supply lines are not short-circuited with the conductive part, then the first capacitor will not be connected to the conductive part through the power supply lines, or the first capacitor is connected to the conductive part through the power supply lines and other devices or circuits including capacitors, so that the capacitance value detected by the capacitor sensor will change obviously in the two cases, so that whether the power supply lines are short-circuited with the conductive part can be judged based on the detected capacitance value change, and the detection of whether the flexible circuit board has a short circuit is realized. The foldable electronic device will be explained and described below in combination with specific embodiments.

[0034] Figure 3 Exemplarily, a structure schematic diagram of a foldable electronic device provided by the embodiment of the present application is shown, referring to Figure 3 The foldable electronic device can comprise: a first shell 101, a second shell 102, a hinge 10, and a flexible circuit board 20, the hinge 10 connecting the first shell 101 and the second shell 102; the first shell 101 comprises a first battery, the second shell 102 comprises a second battery, the flexible circuit board 20 passes through the hinge 10, and power supply lines 21 in the flexible circuit board 20 are respectively connected with the first battery and the second battery, so that the first battery and the second battery are connected in parallel through the power supply lines 21 in the flexible circuit board 20. The foldable electronic device further comprises a first capacitor C1 and a capacitor sensor 30, the first capacitor C1 being connected between the power supply lines 21 and the capacitor sensor 30.

[0035] In combination with Figure 4 Generally speaking, when the conductive part comprises at least one of the first shell 101, the second shell 102, the outer shell of the hinge 10, a signal line, and a ground line, the conductive part will generally be grounded except the signal line and the ground line, when the power supply lines 21 in the flexible circuit board 20 are short-circuited with the conductive part, the power supply lines 21 in the flexible circuit board 20 are equivalent to being grounded, or the power supply lines 21 are short-circuited with the signal line, Figure 4The dashed line between the power supply wire 2121 and the conductive part indicates that the flexible circuit board 20 is short-circuited with the conductive part. In the foldable electronic device, there are generally structures such as devices and circuits, which are collectively referred to as loads for convenience of description. The loads are connected with the power supply wire 21, so that the first battery and the second battery can supply power to the loads through the power supply wire 21, so as to realize the functions of the foldable electronic device. The loads generally include a capacitor, and for the sake of simplifying the structure, the loads are equivalent to a second capacitor C2. Based on this, if the power supply wire 21 is short-circuited with the conductive part, then the first capacitor C1 is only connected to the conductive part through the power supply wire 21; if the power supply wire 21 is not short-circuited with the conductive part, then the first capacitor C1 is not connected to the conductive part through the power supply wire 21, or the first capacitor C1 is connected to the conductive part through the power supply wire 21 and the second capacitor C2. Therefore, the capacitance value detected by the capacitor sensor 30 in the two cases changes obviously, so that whether the power supply wire 21 is short-circuited with the conductive part can be determined based on the detected capacitance value change, and the detection of whether the flexible circuit board 20 is short-circuited is realized.

[0036] It should be noted that if the power supply wire 21 is not short-circuited with the conductive part, the capacitance value detected by the capacitor sensor 30 is relatively stable. Even if the detected capacitance value changes, since the number of capacitors connected between the capacitor sensor 30 and the conductive part is basically unchanged, the transmission path is basically unchanged, so the change of the capacitance value is relatively small and can be ignored. Once the power supply wire 21 is short-circuited with the conductive part, the number of capacitors connected between the capacitor sensor 30 and the conductive part is reduced, so that the transmission path changes greatly. Therefore, the detected capacitance value increases and generally increases greatly, so that whether the power supply wire 21 is short-circuited with the conductive part can be detected by the change of the capacitance value detected by the capacitor sensor 30. It should also be understood that the short circuit mentioned in the embodiments of the present application refers to the short circuit between the power supply wire 21 and the conductive part.

[0037] The capacitance value of the first capacitor C1 can be determined based on the detection sensitivity of the capacitive sensor 30. If the detection sensitivity of the capacitive sensor 30 is in the picofarad range, then the capacitance value of the first capacitor C1 can be at least in the picofarad range; if the detection sensitivity of the capacitive sensor 30 is in the nanofarad range, then the capacitance value of the first capacitor C1 can be at least in the nanofarad range; in short, the capacitance value of the first capacitor C1 can reach the detection sensitivity of the capacitive sensor 30. Furthermore, according to the principle of series and parallel connection of capacitors, the reciprocal of the total capacitance of the first capacitor C1 and the second capacitor C2 connected in series is the sum of the reciprocals of the capacitance of the first capacitor C1 and the second capacitor C2. If the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are closer in magnitude, the capacitance change detected before and after the power supply trace 21 is short-circuited with the conductive component will be greater, and thus the accuracy of the short circuit judgment will be higher, and vice versa. Therefore, in order to improve the detection accuracy, the difference in magnitude between the capacitance values ​​of the first capacitor C1 and the second capacitor C2 can be reduced, for example, but not limited to: the capacitance values ​​of the first capacitor C1 and the second capacitor C2 are both in the picofarad, nanofarad, or microfarad range, or the capacitance value of the first capacitor C1 is in the picofarad range and the capacitance value of the second capacitor C2 is in the microfarad range, etc., which will not be listed here.

[0038] Furthermore, when the capacitance sensor 30 detects the capacitance value, it can be understood that it is detecting... Figure 4 The capacitance value at point A shown in the diagram, or the total capacitance value detected along the transmission path from the capacitance sensor 30 to the conductive component, is related to the capacitance connected in the transmission path, thus enabling short-circuit detection. Furthermore, the capacitance sensor 30 can detect capacitance values ​​according to a detection cycle. The detection cycle can be set according to actual needs. For example, a shorter detection cycle shortens the detection interval, allowing for timely detection of short circuits, but this requires the capacitance sensor 30 to operate for an extended period, increasing its power consumption. Conversely, a longer detection cycle shortens the operating time of the capacitance sensor 30, reducing its power consumption, but the increased detection interval may lead to delayed short-circuit detection. Therefore, the detection cycle can be set based on factors such as the performance requirements of the capacitance sensor 30 and the timeliness requirements for short-circuit detection.

[0039] For example, the foldable electronic device may also include a controller connected to the capacitive sensor 30, wherein the controller can communicate via I 2The C bus or the SPI bus is connected with the capacitive sensor 30, so that data transmission between the controller and the capacitive sensor 30 is realized, so that the detection of the short circuit is realized. At this time, the capacitive sensor 30 is used to send the detected capacitance value to the controller, so that the controller judges whether the power supply wire 21 and the conductive part are short-circuited based on the received capacitance value; or the capacitive sensor 30 is used to judge whether the power supply wire 21 and the conductive part are short-circuited according to the detected capacitance value, and send the judgment result to the controller. Specifically, when judging whether the power supply wire 21 and the conductive part are short-circuited based on the capacitance value, it can specifically include: if the increase value of the detected capacitance value exceeds the preset value, it is determined that the power supply wire 21 and the conductive part are short-circuited, wherein the preset value can be set according to actual needs, such as but not limited to the preset value can be determined according to the capacitance value fluctuation detected by the capacitive sensor 30 when the first capacitor C1 is connected to the conductive part through the power supply wire 21 and the second capacitor C2. In this way, even if the detected capacitance value fluctuates due to interference, the influence of such interference on the judgment result can be excluded, so that the accuracy of the judgment result can be improved. Moreover, since the capacitance value detected by the capacitive sensor 30 will increase greatly after the power supply wire 21 and the conductive part are short-circuited, whether a short circuit occurs can be judged by the capacitance value increase.

[0040] Further, the foldable electronic device can further include a posture sensor 41 and a hall sensor 42, and the controller is connected with the capacitive sensor 30, the posture sensor 41 and the hall sensor 42 respectively; at this time, the controller is used to: in response to the short circuit of the power supply wire 21 and the conductive part, report the posture of the foldable electronic device detected by the posture sensor 41 and the opening and closing state of the foldable electronic device detected by the hall sensor 42 to the server 200. In this way, the server 200 can obtain the posture and the opening and closing state of the foldable electronic device when the power supply wire 21 and the conductive part are short-circuited, so as to optimize the structure of the foldable electronic device based on the obtained information, thereby facilitating the reduction of the probability of short circuit in subsequent product design and improving the performance of the foldable electronic device.

[0041] Among them, the first capacitor C1, the capacitive sensor 30, the posture sensor 41, the hall sensor 42 and the controller are all arranged in the same shell, such as Figure 3 as shown in the first shell 101, of course, they can also be arranged in the second shell 102, but only the figure is not given. In this way, the distance between the first capacitor C1, various sensors and the controller in space can be shortened, and the length of the connection line between the first capacitor C1, various sensors and the controller can be shortened, the wiring complexity can be simplified, and the internal structure of the foldable electronic device can be optimized.

[0042] Figure 5 An exemplary structure schematic diagram of another foldable electronic device provided by the embodiment of the application is shown, which is described with reference toFigure 5 As shown in the figure, the foldable electronic device structure in this embodiment is similar to the foregoing Figure 3 The foldable electronic device structure in the embodiment introduced above is basically similar, except that the foldable electronic device can also perform a protection measure when the power supply wire 21 is short-circuited with the conductive member.

[0043] Exemplarily, the foldable electronic device can further include a first cut-off control module 51 arranged in the first shell 101, the first cut-off control module 51 being connected with the controller; the first shell 101 is provided with a first circuit board, and the first cut-off control module 51 is further connected with the first battery and the first circuit board respectively; at this time, the controller is configured to output a control signal according to the capacitance value detected by the capacitance sensor 30; the first cut-off control module 51 is configured to control the connection state of the first battery and the first circuit board according to the control signal output by the controller; wherein when the control signal is a first level, the first circuit board is connected with the first battery; when the first control signal is a second level, the first circuit board is disconnected with the first battery. The control signal output by the controller can be a pulse signal, which has a high level and a low level, at this time the first level can be a high level and the second level is a low level; or the first level is a low level and the second level is a high level; the specific setting can be made according to actual needs, which is not limited here. In this way, when it is determined that the power supply wire 21 is short-circuited with the conductive member, the first cut-off control module 51 can control the first circuit board to be disconnected with the first battery, so as to realize the protection when short-circuited, avoid the heating or even burning of the through shaft FPC caused by short-circuiting, so as to avoid the damage of the foldable electronic device and improve the safety of the foldable electronic device in use.

[0044] The first cut-off control module 51 can include a first switch Q1, the control end of the first switch Q1 being configured to be connected with the controller, the first end of the first switch Q1 being connected with the first circuit board, and the second end of the first switch Q1 being connected with the first battery; therefore the control signal output by the controller can be used to control the closing state of the first switch Q1, when the control signal is a first level, the first switch Q1 is closed to make the first circuit board connected with the first battery, and when the control signal is a second level, the first switch Q1 is disconnected to make the first circuit board disconnected with the first battery, so as to realize the function of the first cut-off control module 51 through the first switch Q1 and realize the protection when short-circuited.

[0045] Of course, the first cut-off control module 51 arranged in the first shell 101 can cut off the power supply of the first power supply to the first circuit board when a short circuit occurs, thereby protecting the devices and circuits in the first shell 101. As for the second shell 102, when a short circuit occurs, no intervention is required for the second shell 102, such as the second circuit board arranged in the second shell 102. At this time, the second battery does not need to be cut off to supply power to the second circuit board, so that the second battery and the second circuit board are always connected, and the devices and circuits in the second shell 102 can work normally, avoiding the entire foldable electronic device from being unable to work and reducing the user experience.

[0046] Among them, the controller and the first cut-off control module 51 are arranged in the same shell, such as Figure 5 arranged in the first shell 101 as shown in the figure, of course, they can also be arranged in the second shell 102, but no figure is given. In this way, the length of the connection line between the controller and the first cut-off control module 51 can be shortened, avoiding too complex wiring, thereby optimizing the internal structure of the foldable electronic device.

[0047] Further, the foldable electronic device can also include a display screen Figure 5 not shown in the figure), and the controller is also connected with the display screen; the controller is further configured to control the display screen to display prompt information according to the capacitance value detected by the capacitance sensor 30. The prompt information includes whether to enter the short circuit protection program, such as the prompt information including a confirmation option and a cancellation option. These prompt information is used to display to the user of the foldable electronic device. When the user sees the prompt information, if the confirmation option is selected, a confirmation instruction to enter the short circuit protection program is formed, and if the cancellation option is selected, no confirmation instruction to enter the short circuit protection program is formed, or a cancellation instruction to enter the short circuit protection program is formed. At this time, when the controller receives the confirmation instruction to enter the short circuit protection program, the control signal output by the controller is the second level, so that the first circuit board is disconnected from the first battery through the first switch Q1, thereby realizing protection when a short circuit occurs. In this way, the user can be prompted through the display screen to determine whether to enter the short circuit protection program, so that the user can be provided with preparation time, avoiding the loss of user data when suddenly entering the short circuit protection program, thereby improving the user experience. It should be understood that the short circuit protection program refers to the degree of cutting off the connection between the first battery and the first circuit board by the controller through the first cut-off control module 51.

[0048] The display screen can be arranged in the first shell 101 or the second shell 102, that is, the display screen in the first shell 101 can be used to display the prompt information, or the display screen in the second shell 102 can be used to display the prompt information, or the display screen in the first shell 101 and the display screen in the second shell 102 can be used to display the prompt information together, and the specific arrangement can be set according to actual needs, which is not limited here.

[0049] Based on this, in this embodiment, the working process of the foldable electronic device can include:

[0050] Step 1, the capacitance sensor 30 reports to the controller after detecting the capacitance value according to the detection period;

[0051] Step 2, when the controller determines that the power supply line 21 in the flexible circuit board 20 is short-circuited with the conductive part, the controller obtains the posture and opening and closing state of the foldable electronic device, and reports these information to the server;

[0052] Step 3, the controller judges whether the severity of the short circuit between the power supply line 21 and the conductive part reaches a threshold degree, if yes, step 4 is executed; if no, step 5 is executed;

[0053] Exemplarily, the severity of the short circuit between the power supply line 21 and the conductive part is different due to the different capacitance value changes detected by the capacitance sensor 30, so the severity of the short circuit between the power supply line 21 and the conductive part can be judged according to the capacitance value change degree, when the severity does not reach the threshold degree, it means that the short circuit condition is not very serious, at this time, the user of the foldable electronic device can determine whether to enter the short circuit protection program; if the severity reaches the threshold degree, it means that the short circuit condition is very serious, and the short circuit protection program needs to be executed immediately to avoid further damage to the foldable electronic device. The threshold degree can be set according to the maximum short circuit condition that the foldable electronic device can withstand, so as to reduce the loss of the foldable electronic device.

[0054] Step 4, the controller cuts off the connection between the first battery and the first circuit board through the first cut-off control module 51;

[0055] Step 5, the controller controls the display screen to display the prompt information;

[0056] Step 6, the controller returns to step 4 when receiving the determination instruction of entering the short circuit protection program.

[0057] It should be understood that the structure of the foldable electronic device in this embodiment is similar to the structure of the foldable electronic device in the foregoing Figure 3 The structure of the foldable electronic device in the embodiment introduced above can be referred to the related introduction in the foregoing embodiments, and the repeated parts will not be described here.

[0058] Figure 6 An exemplary structure diagram of a foldable electronic device is shown in FIG. 13. The foldable electronic device structure in this embodiment is similar to the foldable electronic device structure in the foregoing embodiments, and the difference is that the first cut-off control module 51 in this embodiment includes a first control circuit 511 in addition to the first switch Q1. The first control circuit 511 may, for example, include a third switch Q3 and a fourth switch Q4. The control terminal of the third switch Q3 is connected to the controller, the first terminal of the third switch Q3 is connected to the control terminal of the fourth switch Q4, and the second terminal of the third switch Q3 is connected to the first constant-voltage signal terminal S1. The first terminal of the fourth switch Q4 is used to be connected to the first battery, and the second terminal of the fourth switch Q4 is connected to the control terminal of the first switch Q1. Figure 6 Figure 5 The foldable electronic device structure in this embodiment is similar to the foldable electronic device structure in the foregoing embodiments, and the difference is that the first cut-off control module 51 in this embodiment includes a first control circuit 511 in addition to the first switch Q1. The first control circuit 511 may, for example, include a third switch Q3 and a fourth switch Q4. The control terminal of the third switch Q3 is connected to the controller, the first terminal of the third switch Q3 is connected to the control terminal of the fourth switch Q4, and the second terminal of the third switch Q3 is connected to the first constant-voltage signal terminal S1. The first terminal of the fourth switch Q4 is used to be connected to the first battery, and the second terminal of the fourth switch Q4 is connected to the control terminal of the first switch Q1.

[0059] The third switch Q3 and the fourth switch Q4 may, for example, be transistors, and the third switch Q3 and the fourth switch Q4 may, for example, be different types of transistors. For example, the third switch Q3 may, for example, be an N-type transistor, and the fourth switch Q4 may, for example, be a P-type transistor. In this case, the first constant-voltage signal terminal S1 may, for example, be a ground terminal. Alternatively, the third switch Q3 may, for example, be a P-type transistor, and the fourth switch Q4 may, for example, be an N-type transistor. In this case, the first constant-voltage signal terminal S1 may, for example, be a signal terminal that can provide the threshold voltage required by an N-type transistor. The types of the third switch Q3 and the fourth switch Q4 may, for example, be set as needed, and are not limited in this regard.

[0060] For example, the third switch Q3 may, for example, be an N-type transistor, the fourth switch Q4 may, for example, be a P-type transistor, and the first constant-voltage signal terminal S1 may, for example, be a ground terminal. When the control signal is at a high level, the third switch Q3 is closed, the control terminal of the fourth switch Q4 is connected to the ground terminal, the potential at the control terminal of the fourth switch Q4 is pulled low, and the fourth switch Q4 is turned on. In this case, the first battery is connected to the control terminal of the first switch Q1, the potential at the control terminal of the first switch Q1 is the output potential of the first battery, and the first switch Q1 is closed to connect the first battery and the first circuit board. When the control signal is at a low level, the third switch Q3 is opened, the fourth switch Q4 and the first switch Q1 are also opened, and the first battery and the first circuit board are disconnected.

[0061] ​Thus, by the cooperation of the first control circuit 511 and the first switch Q1, the function of the first cut-off control module 51 can be realized, and short circuit protection can be realized when the power supply wire 21 is short-circuited with the conductive part. Moreover, when the first control circuit 511 controls the first switch Q1, the voltage provided by the first battery can be used to control the closing state of the first switch Q1, without the controller directly outputting a threshold voltage for controlling the closing of the first switch Q1, so that the cost and power consumption of the controller can be reduced, and the leakage can also be reduced, thereby improving the performance of the foldable electronic device. In addition, the first control circuit 511 and the first switch Q1 can be structures that already exist in the foldable electronic device and are used for calibration before the foldable electronic device is shipped. The embodiment of the present application uses the first control circuit 511 and the first switch Q1 that already exist to realize the function of the first cut-off control module 51, so that the original devices can be fully utilized to realize more functions, and the detection and protection of short circuits can be realized on the basis of minimal modification of the foldable electronic device, thereby facilitating the reduction of the cost of the foldable electronic device.

[0062] Further, the first control circuit 511 can further include a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4. The first resistor R1 is connected between the first constant voltage signal end S1 and the control end of the third switch Q3. The second resistor R2 is connected between the first battery and the first end of the third switch Q3. The third resistor R3 is connected between the first battery and the first end of the fourth switch Q4. The fourth resistor R4 is connected between the control end of the first switch Q1 and the first constant voltage signal end S1. Thus, by the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4, a voltage stabilizing effect can be realized, so that the first control circuit 511 is in a stable working state, and the potential of the control end of the third switch Q3, the control end of the fourth switch Q4, and the control end of the first switch Q1 is prevented from abnormally fluctuating, thereby preventing the short circuit protection process from being abnormal due to abnormal fluctuation, and improving the reliability of the foldable electronic device.

[0063] It should be understood that the structure of the foldable electronic device in this embodiment is similar to the structure of the foldable electronic device in the foregoing Figure 5 embodiments, and details are not repeated here.

[0064] Figure 7a and Figure 7b An example of a structure of another foldable electronic device is shown in the drawings, and the structure of the foldable electronic device in this embodiment is similar to the structure of the foldable electronic device in the foregoing Figure 7a and Figure 7b embodiments, and details are not repeated here. Figure 5 or Figure 6The foldable electronic device structures in the introduced embodiments are basically similar, and the difference is that the foldable electronic device further comprises a second cut-off control module 52 arranged in the second shell 102, the second cut-off control module 52 comprises a second switch Q2, and the second shell 102 is provided with a second circuit board. Exemplarily, when the first cut-off control module 51 only comprises the first switch Q1, as shown in Figure 7a , the control end of the second switch Q2 is used for being connected with the controller, the first end of the second switch Q2 is connected with the second circuit board, and the second end of the second switch Q2 is connected with the second battery; or, when the first cut-off control module 51 comprises the first switch Q1 and the first control circuit 511, as shown in Figure 7b , the control end of the second switch Q2 is used for being connected with the control end of the first switch Q1, the first end of the second switch Q2 is connected with the second circuit board, and the second end of the second switch Q2 is connected with the second battery. In this way, when the short circuit occurs, the controller or the first control circuit 511 can also control the second switch Q2, and the second switch Q2 is also closed when the first switch Q1 is closed, so as to make the second circuit board and the second battery in communication, and the second switch Q2 is also disconnected when the first switch Q1 is disconnected, so as to make the second circuit board and the second battery disconnected, thereby the protection in the short circuit can also be performed in the second shell 102, the devices and circuits in the second shell 102 are protected, and the safety and reliability of the foldable electronic device are further improved.

[0065] In addition, the flexible circuit board 20 has a control trace 22, as shown in Figure 7a , when the first cut-off control module 51 only comprises the first switch Q1, the control trace 22 is connected with the control end of the second switch Q2 and the controller respectively, so that the control signal output by the controller can be output to the second switch Q2 through the control trace 22, and the short circuit protection in the first shell 101 and the second shell 102 is realized. Or, as shown in Figure 7b , when the first cut-off control module 51 comprises the first switch Q1 and the first control circuit 511, the control trace 22 is connected with the control end of the second switch Q2 and the control end of the first switch Q1 respectively, so that the signal output by the first control circuit 511 can be transmitted to the second switch Q2 through the control trace 22, and the short circuit protection in the first shell 101 and the second shell 102 is realized.

[0066] It should be understood that the foldable electronic device structure in the embodiment is similar to the foregoing Figure 5 or Figure 6 The similarities of the foldable electronic device structure in the introduced embodiments can be referred to the foregoing introduction in the embodiments, and the repeated parts will not be described herein.

[0067] Figure 8 Exemplarily, a structure schematic diagram of still another foldable electronic device provided by the embodiments of the present application is shown, which is described with reference to the foregoingFigure 8 The foldable electronic device structure in this embodiment is basically similar to the foregoing Figure 7a or Figure 7b The foldable electronic device structure in this embodiment is basically similar to the foregoing The second control circuit 522 includes a fifth switch Q5 and a sixth switch Q6; the control end of the fifth switch Q5 is connected with the controller, the first end of the fifth switch Q5 is connected with the control end of the sixth switch Q6, and the second end of the fifth switch Q5 is connected with the first constant voltage signal end S1; the first end of the sixth switch Q6 is connected with the second battery, and the second end of the sixth switch Q6 is connected with the control end of the second switch Q2. The fifth switch Q5 and the sixth switch Q6 are basically similar to the third switch Q3 and the fourth switch Q4 in the foregoing embodiment, and details are described above and will not be described here.

[0068] In this way, the second control circuit 522 and the second switch Q2 can realize the function of the second cut-off control module 52 and achieve short circuit protection when the power supply wire 21 is short-circuited with the conductive part. Moreover, when the second control circuit 522 controls the second switch Q2, the voltage provided by the second battery can be used to control the closing state of the second switch Q2, without the controller directly outputting a threshold voltage for controlling the closing of the second switch Q2, which can reduce the cost and power consumption of the controller, reduce the leakage current, and improve the performance of the foldable electronic device. In addition, the second control circuit 522 and the second switch Q2 can be structures that exist in the foldable electronic device itself and are used for calibration before leaving the factory. The embodiment of the present application uses the original second control circuit 522 and the second switch Q2 to realize the function of the second cut-off control module 52, which can make full use of the original devices to realize more functions, detect and protect short circuits with minimal modification to the foldable electronic device, thereby reducing the cost of the foldable electronic device.

[0069] In addition, the flexible circuit board 20 is provided with a control wire 22 connected with the control end of the fifth switch Q5 and the controller, so that the control signal output by the controller can be output to the control end of the fifth switch Q5 through the control wire 22, realizing short circuit protection in the first shell 101 and the second shell 102.

[0070] Further, the second control circuit 522 can further include a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8, the fifth resistor R5 is connected between the first constant voltage signal end S1 and the control end of the fifth switch Q5, the sixth resistor R6 is connected between the second battery and the first end of the fifth switch Q5, the seventh resistor R7 is connected between the second battery and the first end of the sixth switch Q6, and the eighth resistor R8 is connected between the control end of the second switch Q2 and the first constant voltage signal end S1. In this way, the fifth resistor R5, the sixth resistor R6, the seventh resistor R7 and the eighth resistor R8 can realize voltage stabilization, so that the second control circuit 522 is in a stable working state, avoiding abnormal fluctuation of the potential of the control end of the second switch Q2, the control end of the fifth switch Q5 and the control end of the sixth switch Q6, and further avoiding abnormal fluctuation leading to abnormal short circuit protection process, thereby improving the reliability of the foldable electronic device.

[0071] It should be understood that the structure of the foldable electronic device in this embodiment is similar to the structure of the foldable electronic device in the foregoing Figure 7a or Figure 7b The similarities of the structure of the foldable electronic device in the embodiments introduced above can be referred to the related introduction in the foregoing embodiments, and the repeated parts will not be described herein.

[0072] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application belong to the scope of the claims of the present application and the equivalent technology thereof, the present application also intends to include these modifications and variations.

Claims

1. A foldable electronic device, characterized by, The application relates to a foldable electronic device. The foldable electronic device comprises a first shell, a second shell, a hinge, and a flexible circuit board, wherein the hinge connects the first shell and the second shell. The first shell is provided with a first battery, the second shell is provided with a second battery, the flexible circuit board passes through the hinge, and the first battery and the second battery are connected through power supply lines in the flexible circuit board. The foldable electronic device further comprises a first capacitor and a capacitor sensor, wherein the first capacitor is connected between the power supply lines and the capacitor sensor.

2. The foldable electronic device of claim 1, wherein, The foldable electronic device further comprises a controller and a cut-off control module arranged in the first shell, the controller is connected with the capacitor sensor and the cut-off control module respectively, the first shell is provided with a first circuit board, and the cut-off control module is further connected with the first battery and the first circuit board respectively. The controller is used for outputting a control signal according to a capacitance value detected by the capacitor sensor. The cut-off control module is used for controlling a connection state of the first battery and the first circuit board according to the control signal output by the controller, wherein when the control signal is at a first level, the first battery and the first circuit board are connected, and when the control signal is at a second level, the first battery and the first circuit board are disconnected.

3. The foldable electronic device of claim 2, wherein, The controller is specifically used for controlling the control signal output to be at the second level in response to an increase value of the capacitance value detected by the capacitor sensor exceeding a preset value.

4. The foldable electronic device of claim 2, wherein, The cut-off control module comprises a first switch, a control end of the first switch is used for being connected with the controller, a first end of the first switch is connected with the first circuit board, and a second end of the first switch is connected with the first battery.

5. The foldable electronic device of claim 4, wherein, The foldable electronic device further comprises a second switch and a second circuit board arranged in the second shell, a control end of the second switch is used for being connected with the controller, a first end of the second switch is connected with the second circuit board, and a second end of the second switch is connected with the second battery. The flexible circuit board has a control line, and the control line is connected with the control end of the second switch and the controller respectively.

6. The foldable electronic device of claim 4, wherein, The cut-off control module further comprises a third switch and a fourth switch, a control end of the third switch is connected with the controller, a first end of the third switch is connected with a control end of the fourth switch, a second end of the third switch is connected with a first constant-voltage signal end, a first end of the fourth switch is used for being connected with the first battery, and a second end of the fourth switch is connected with the control end of the first switch.

7. The foldable electronic device of claim 6, wherein, The foldable electronic device further comprises a second switch and a second circuit board arranged in the second shell, a control end of the second switch is used for being connected with the control end of the first switch, a first end of the second switch is connected with the second circuit board, and a second end of the second switch is connected with the second battery. The flexible circuit board has a control line, and the control line is connected with the control end of the second switch and the control end of the first switch respectively.

8. The foldable electronic device of claim 6, wherein, The foldable electronic device further comprises a second switch, a fifth switch and a sixth switch arranged in the second housing; a control end of the fifth switch is connected with the controller; a first end of the fifth switch is connected with a control end of the sixth switch; a second end of the fifth switch is connected with a first constant voltage signal end; a first end of the sixth switch is connected with the second battery; a second end of the sixth switch is connected with a control end of the second switch. The flexible circuit board is provided with a control trace, and the control trace is connected with the control end of the fifth switch and the controller respectively.

9. The foldable electronic device of claim 2, wherein, The controller is connected to the capacitive sensor via an I 2 A C-bus or SPI bus is connected to the capacitive sensor.

10. The foldable electronic device of any of claims 2-9, wherein, The foldable electronic device further comprises a display screen, and the controller is further connected with the display screen. The controller is further configured to: control the display screen to display prompt information according to the capacitance value detected by the capacitive sensor, the prompt information including whether to enter a short-circuit protection program; and control the output control signal to be the second level in response to receiving a determination instruction to enter the short-circuit protection program.

Images