An electronic device

Abstract

The present disclosure relates to an electronic device. The electronic device comprises a circuit board having a power input end and an electric device, the electric device being electrically connected to the power input end; a power supply component electrically connected to the power input end and configured to supply power to the electric device of the circuit board; a switch component arranged on a connection line between the power supply component and the power input end; and a temperature detection resistor arranged on the circuit board and located on the connection line between the power input end and the electric device; wherein the switch component is configured to disconnect the electrical connection between the power supply component and the power input end when a temperature rise parameter of the temperature detection resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold. The present disclosure can cut off the power supply to the circuit board when the temperature rise parameter of the temperature detection resistor is greater than the preset temperature rise threshold, thereby protecting the use of the circuit board and the electronic device.

Description

Technical Field

[0001] This disclosure relates to the field of electronic product protection, and more particularly to an electronic device. Background Technology

[0002] With the development of electronic products, mobile phones, computers, tablets and other electronic devices have gradually become an indispensable part of people's lives. These electronic devices are usually equipped with various circuit boards, which are set with different functional circuits to support the electronic devices to achieve a variety of functions.

[0003] Water ingress is a common problem in electronic devices. Moisture can cause short circuits when it comes into contact with the circuit board. If left untreated for a long time, the short circuit can further damage the circuit board and affect the functionality of the electronic device. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this disclosure provides an electronic device that can cut off the power supply to the circuit board when the temperature rise parameter of the temperature sensing resistor exceeds a preset temperature rise threshold, thereby protecting the use of the circuit board and the electronic device.

[0005] This disclosure provides an electronic device, the electronic device comprising:

[0006] A circuit board has a power input terminal and an electrical component, wherein the electrical component is electrically connected to the power input terminal;

[0007] A power supply assembly, electrically connected to the power supply input terminal, is used to supply power to the electrical components on the circuit board;

[0008] A switching assembly is disposed on the connection line between the power supply assembly and the power input terminal;

[0009] A temperature sensing resistor is disposed on the circuit board and located on the connection line between the power supply input terminal and the electrical device;

[0010] The switching component is used to disconnect the electrical connection between the power supply component and the power supply input terminal when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold.

[0011] In some optional embodiments of this disclosure, the electronic device further includes:

[0012] The controller is electrically connected to the temperature sensing resistor on the circuit board and the switching assembly, respectively, and is used to acquire the temperature rise parameter of the temperature sensing resistor within a preset detection period for the temperature sensing resistor; and to output a control signal for the switching assembly when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold.

[0013] The control signal is used to instruct the switching assembly to disconnect the electrical connection between the power supply assembly and the power supply input terminal.

[0014] In some optional embodiments of this disclosure, the circuit board includes a first circuit board; the switching assembly includes a first switch connected to a connection line between the power supply assembly and the power supply input terminal of the first circuit board;

[0015] The controller is disposed on the first circuit board and is electrically connected to the first switch and the temperature sensing resistor on the first circuit board, respectively.

[0016] In some optional embodiments of this disclosure, the circuit board further includes a second circuit board; the second circuit board and the first circuit board are disposed at different locations in the electronic device;

[0017] The switching assembly further includes a second switch, which is connected to the connection line between the power supply assembly and the power supply input terminal of the second circuit board;

[0018] The controller is electrically connected to the second switch and the temperature sensing resistor on the second circuit board, respectively.

[0019] In some optional embodiments of this disclosure, the first circuit board further has a power supply output terminal electrically connected to the power supply input terminal of the first circuit board;

[0020] The second switch is connected on the connection line between the power output terminal of the first circuit board and the power input terminal of the second circuit board.

[0021] In some optional embodiments of this disclosure, the second circuit board is disposed at the functional interface of the electronic device, and the functional circuit on the second circuit board is electrically connected to the functional interface;

[0022] The functional interfaces include data interfaces or audio interfaces.

[0023] In some optional embodiments of this disclosure, the second circuit board includes at least two; the at least two second circuit boards are respectively disposed at different locations of the electronic device;

[0024] The second switch includes at least two; each of the second switches is connected to a connection line between a power input terminal of a second circuit board and the power supply assembly.

[0025] In some optional embodiments of this disclosure, the first switch is a field-effect transistor switch, and / or the second switch is a field-effect transistor switch.

[0026] In some optional embodiments of this disclosure, the controller is further configured to determine an alarm message when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold within a preset detection period for the temperature sensing resistor;

[0027] The electronic device also includes:

[0028] An information output component, electrically connected to the controller, is used to output the warning information;

[0029] The information output component includes a display screen or a speaker.

[0030] In some optional embodiments of this disclosure, the switching component is further configured to disconnect the electrical connection between the power supply component and the power supply input terminal when the absolute value of the temperature value of the temperature sensing resistor changes from less than or equal to a preset temperature threshold to greater than a preset temperature threshold.

[0031] In some optional embodiments of this disclosure, the temperature sensing resistor is a thermistor.

[0032] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0033] By installing a temperature sensing resistor on the circuit board, short circuits caused by water ingress can be detected promptly. Furthermore, by incorporating switching components on the circuit board and power supply assembly that match the temperature rise parameters of the sensing resistor, the power supply to the circuit board can be cut off in a timely manner, protecting its subsequent use. Moreover, compared to relying solely on whether the temperature value of the sensing resistor exceeds a specified temperature threshold to determine the presence of a short circuit, this disclosure uses temperature rise parameters to determine whether a short circuit has occurred in the subsequent circuit. This allows for early detection of short circuits in subsequent circuits before the temperature reaches the specified threshold, enabling the switching components to be switched off. This mitigates the risk of multiple short circuits caused by moisture entering later circuits, reducing the risk of the circuit board burning out and effectively protecting the entire circuit board and even the functionality of the electronic device.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0036] Figure 1 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 1 ;

[0037] Figure 2 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 2 ;

[0038] Figure 3 This is a schematic diagram showing the positions of a first circuit board and a second circuit board according to an exemplary embodiment;

[0039] Figure 4 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 3 ;

[0040] Figure 5 This is a partial circuit architecture diagram of an electronic device according to an exemplary embodiment;

[0041] Figure 6 This is a circuit connection diagram of a first switch or a second switch according to an exemplary embodiment;

[0042] Figure 7 This is a structural block diagram of an electronic device according to an exemplary embodiment.

[0043] Figures 1 to 5 The reference numerals in the accompanying drawings are as follows:

[0044] 1. Circuit board; 11. Power input terminal; 12. Electrical components; 1a. First circuit board; 1b. Second circuit board; 2. Power supply assembly; 3. Switch assembly; 3a. First switch; 3b. Second switch; 4. Temperature sensing resistor; 5. Controller. Detailed Implementation

[0045] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this invention.

[0046] This disclosure provides an electronic device. See also... Figure 1 , Figure 1 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 1 Among them, electronic devices include:

[0047] Circuit board 1 has a power input terminal 11 and an electrical component 12, and the electrical component 12 is electrically connected to the power input terminal 11.

[0048] Power supply component 2 is electrically connected to power supply input terminal 11 and is used to supply power to the electrical components 12 of circuit board 1;

[0049] The switch assembly 3 is disposed on the connection line between the power supply assembly 2 and the power input terminal 11;

[0050] Temperature sensing resistor 4 is mounted on circuit board 1 and located on the connection line between power input terminal 11 and power device 12;

[0051] The switching component 3 is used to disconnect the electrical connection between the power supply component 2 and the power supply input terminal 11 when the temperature rise parameter of the temperature sensing resistor 4 changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold within a preset detection period for the temperature sensing resistor 4.

[0052] Here, electronic devices include fixed terminals, mobile terminals, or portable devices; fixed terminals include desktop computers or large-screen display devices; for example, large-screen display devices include smart TVs and / or projectors. Mobile terminals include, but are not limited to, mobile phones, tablets, wearable devices, in-vehicle devices, or IoT terminals. IoT terminals include, but are not limited to, smart home devices and / or smart office devices; this disclosure does not impose further limitations in these respects.

[0053] The circuit board described in this disclosure is a core component in electronic devices that supports various functions and is used to carry and connect various electrical devices. The circuit board in this disclosure can be a printed circuit board (PCB), a finished printed circuit board assembly (PCBA), or a flexible printed circuit (FPC), etc. The PCB can be a single-sided board, a double-sided board, or a multi-layer board stacked together, and this disclosure does not limit it.

[0054] Here, the circuit board mentioned above in this disclosure can be a motherboard, communication circuit board, sensor circuit board, and driver circuit board in an electronic device, etc., and the embodiments of this disclosure do not limit this.

[0055] The circuit board includes a power input terminal and power-consuming components. The power input terminal can acquire external charging signals and transmit them to the power-consuming components in the subsequent stage through the power supply path to ensure that the power-consuming components in the subsequent stage can be in working condition and support the normal use of the circuit board.

[0056] In this embodiment, the electronic device further includes a power supply component, which may include a battery in the electronic device. The battery is electrically connected to the power supply input terminal of the circuit board, and is used to supply power to various electrical components on the circuit board through the power supply input terminal, enabling the circuit board to function normally. Alternatively, the power supply component may be a charging chip. When the charging chip is connected to an external charger or power bank through the charging interface of the electronic device, it has the ability to output a charging signal. In this case, the charging signal output by the external charger or power bank is transmitted to the power supply input terminal through the charging chip to supply power to the circuit board.

[0057] The connection line between the power supply component and the power input terminal of the circuit board is equipped with a switch assembly. When the switch assembly is in the ON state, the connection line is open, allowing for normal power supply. When the switch assembly is OFF, the connection line is disconnected, preventing further power supply to the circuit board, rendering it unusable. By incorporating this switch assembly, the activation time of the circuit board can be adjusted, enabling it to perform the designated functions of the electronic device at appropriate times.

[0058] Here, the aforementioned switch assembly may have one or more switches, and the type of switch may be a mechanical switch or a signal switch; this disclosure does not limit this.

[0059] In electronic devices, various circuit boards are used to perform specific functions. Accidental water ingress may occur; for example, if the electronic device falls into water, or if moisture enters the device in a high-humidity environment. Since moisture is conductive, when it enters the electronic device and reaches the circuit board, it may cause a short circuit in the electrical path of one or more electrical components. Because a short circuit causes a sharp increase in current, this embodiment of the present disclosure chooses to set a temperature sensing resistor on the circuit board and place it on the connection line between the power input terminal and the subsequent electrical components. According to Joule's law, an increase in current will cause a significant increase in the heating power of the temperature sensing resistor, thus causing its temperature to rise rapidly. Therefore, this embodiment of the present disclosure, by adding a temperature sensing resistor and a detector electrically connected to the temperature sensing resistor, periodically detects the temperature value of the temperature sensing resistor when the switching component is in the conducting state, i.e., when the power supply component is supplying power to the circuit board, thereby determining the temperature rise parameter and quickly and accurately determining whether at least one electrical path in the circuit board has a short circuit based on the temperature rise parameter. In this situation, if the electronic device detects that the circuit board may be short-circuited due to water ingress, it can switch the switching component from the on state to the off state. This will stop the power supply component from supplying power to the circuit board, so there will be no current on the circuit board. The water vapor will not cause further short circuits in the power paths of other electrical components due to its flow. This timely protection of other parts of the circuit board will prevent damage to the circuit board, improve safety and the utilization rate of the circuit board.

[0060] For example, the temperature rise parameter can be expressed as the temperature rise slope. In this embodiment of the disclosure, multiple temperature sampling points can be set, and a temperature rise curve can be formed by statistically analyzing the temperature values ​​of multiple temperature sampling points. The temperature rise slope of the temperature rise curve can reflect the degree of temperature change. If the temperature rise slope is greater than a preset slope threshold, it can be determined that the temperature of the temperature detection resistor is rising sharply, and at this time, at least one path of the subsequent circuit is short-circuited.

[0061] Understandably, if a short circuit in the downstream circuit is only determined based on the temperature reading of the temperature sensing resistor exceeding a specified temperature threshold, moisture may have already caused short circuits in multiple power paths of the downstream circuit. In this case, the circuit board may already be burned or close to burning out. However, by collecting the temperature rise parameters of the temperature sensing resistor and judging whether a short circuit has occurred in the downstream circuit based on the temperature rise parameters, the short circuit problem in the downstream circuit can be predicted in advance before the temperature rises to the specified temperature threshold. This allows the switching components to be adjusted to the open state in time, which can effectively protect the safety of the circuit board.

[0062] In some optional embodiments of this disclosure, the temperature sensing resistor is a thermistor.

[0063] Here, the thermistor (NTC) is a negative temperature coefficient thermistor, mainly made of metal oxides such as manganese (Mn), nickel (Ni), and cobalt (Co) sintered together, and has semiconductor characteristics. As the temperature increases, the number of charge carriers (electrons / holes) inside the semiconductor increases, the conductivity is enhanced, and therefore the resistance value decreases. This characteristic enables the NTC to sensitively detect temperature changes. In the embodiments of this disclosure, the resistance value of the NTC can be detected, and the temperature value and temperature rise of the NTC can be determined by the temperature-resistance relationship of the NTC.

[0064] It is known that because NTCs are small in size, low in cost, have a wide operating temperature range, and are very sensitive to temperature changes, they can detect minute temperature changes within a small temperature range, meeting the temperature measurement needs of most electronic devices and thus having high practicality.

[0065] Of course, in other optional embodiments of this disclosure, the temperature sensing resistor may also be a resistance temperature detector (RTD), a thermocouple, or a humidity-sensitive resistor, etc., and this disclosure does not limit this. For example, when the temperature sensing resistor is a humidity-sensitive resistor, the humidity detection result of the humidity-sensitive resistor can be combined to jointly determine whether there is a short circuit on the circuit board caused by water ingress, thereby further controlling the switching assembly.

[0066] In the electronic device proposed in this embodiment, by setting a temperature detection resistor between the power supply input terminal of the circuit board and the electrical device, when the temperature rise parameter of the temperature detection resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold, it can be determined that a short circuit has occurred in the power path of at least one electrical device on the circuit board. This causes the switching component to switch from the on state to the off state, thereby disconnecting the power supply component from the power supply input terminal to the circuit board.

[0067] By installing a temperature sensing resistor on the circuit board, short circuits caused by water ingress can be detected promptly. Furthermore, by incorporating switching components on the circuit board and power supply assembly that match the temperature rise parameters of the sensing resistor, the power supply to the circuit board can be cut off in a timely manner, protecting its subsequent operation. Moreover, compared to relying solely on whether the absolute value of the temperature reading from the sensing resistor exceeds a specified temperature threshold to determine the presence of a short circuit, this disclosure uses temperature rise parameters to identify short circuits in subsequent circuits. This allows for early detection of short circuits before the temperature reaches the specified threshold, enabling the switching components to be switched off. This mitigates the risk of multiple short circuits caused by moisture entering later stages of the circuit, reducing the risk of the circuit board burning out and effectively protecting the entire circuit board and even the functionality of the electronic device.

[0068] In some optional embodiments of this disclosure, see Figure 2 , Figure 2 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 2 ; combination Figure 1 and Figure 2 Electronic devices also include:

[0069] The controller 5 is electrically connected to the temperature sensing resistor 4 and the switch assembly 3 on the circuit board 1, respectively. It is used to obtain the temperature rise parameter of the temperature sensing resistor 4 within a preset detection period for the temperature sensing resistor 4; and to output a control signal for the switch assembly 3 when the temperature rise parameter of the temperature sensing resistor 4 changes from less than or equal to a preset temperature rise threshold to greater than a preset temperature rise threshold.

[0070] The control signal is used to instruct the switch assembly 3 to disconnect the electrical connection between the power supply assembly 2 and the power supply input terminal 11.

[0071] Here, the controller can be the core controller in an electronic device, such as a system-on-chip (SoC) or a central processing unit (CPU). In this case, the SoC or CPU can be configured to have the function of regulating the switching state of the switching components based on temperature rise parameters. Of course, in other examples, the controller can also be set in a separate chip and have the function of regulating the switching components. In this case, the controller is a microprocessor (MCU) dedicated to water ingress protection of the circuit board.

[0072] In this embodiment of the disclosure, the controller has an electrical connection with the temperature detection module located on the circuit board, specifically a communication connection with the detector corresponding to the temperature detection module, so as to periodically acquire the temperature value collected by the detector. In this way, the controller can determine the temperature rise parameter in each preset detection cycle, and then compare the temperature rise parameter with the preset temperature rise threshold.

[0073] Here, the controller is also electrically connected to the control terminal of the switching component, specifically through a communication connection. Therefore, when the controller determines that the temperature rise parameter of the temperature sensing resistor changes from less than or equal to the preset temperature rise threshold to greater than the preset temperature rise threshold, it can output a control signal to the control terminal of the switching component to instruct the switching component to switch from the on state to the off state. At this time, the power supply component can no longer supply power to the circuit board, and the subsequent circuits of the circuit board will be protected.

[0074] It should be noted that, Figure 2 The communication connections between the controller 5 and the switching assembly 3 and the temperature sensing resistor 4 are shown by dashed lines.

[0075] It is understandable that the aforementioned switching component can be a signal switch, where the control signal controls the flow of electrons or holes, thereby switching the signal switch to the off state. Alternatively, the control signal output by the controller can also be a digital signal. The switching component can be equipped with a line selector, which can control the connection between the power supply input and the power supply component when the received digital signal is 1, and control the connection between the power supply input and the power supply component when the received digital signal is 0. Here, the control signal can be the digital signal 0.

[0076] It should be noted that the controller can also generate a reset signal based on a reset command. This reset signal can instruct the switching component to switch from the off state to the on state. Here, the reset command can be a user-triggered command, such as a touch command, gesture command, or voice command from the user to the electronic device. It can also be a command automatically generated by the system. For example, if the system estimates that the water ingress of the electronic device may have been resolved based on the waiting time after the first switch is disconnected, and the circuit board can continue to be used, then a reset command will be automatically generated.

[0077] This embodiment of the disclosure, by setting a controller and connecting the controller to a temperature sensing resistor and a switching assembly, can efficiently detect water ingress short circuit problems on the circuit board and quickly disconnect the switching assembly, ensuring the safe use of the circuit board and electronic equipment.

[0078] In some optional embodiments of this disclosure, the switching component is further configured to disconnect the electrical connection between the power supply component and the power supply input terminal when the absolute value of the temperature sensing resistor changes from less than or equal to a preset temperature threshold to greater than the preset temperature threshold.

[0079] Here, in this embodiment of the disclosure, the absolute value of each temperature value collected by the temperature sensing resistor is compared with a preset temperature threshold, where the preset temperature threshold is the temperature at which the circuit board may burn out. If the temperature exceeds the preset temperature threshold by a large margin, the circuit board is highly likely to burn out. Thus, when the comparison result indicates that the absolute value of a collected temperature value has changed to be greater than the preset temperature threshold, the aforementioned control signal is also generated to control the switching component to switch from the on state to the off state.

[0080] Each circuit board can be equipped with a temperature sensing resistor, and the electrical connection distance between the temperature sensing resistor and the power input terminal must be less than the electrical connection distance between the temperature sensing resistor and each electrical component. This ensures that a short circuit in any subsequent electrical component's circuit will be reflected in the temperature parameter of the temperature sensing resistor. Multiple temperature sensing resistors can also be installed on each circuit board, and at least one temperature sensing resistor can be installed in the power path of any subsequent electrical component, allowing for timely detection of short circuits in each power path. However, considering cost, this disclosure can optionally include a single temperature sensing resistor, which will disconnect the switching assembly when at least one of two conditions is met. These two conditions are either the absolute value change of any temperature value collected by the temperature sensing resistor is greater than a preset temperature threshold, or the temperature rise parameter change of the temperature sensing resistor within a preset detection period is greater than a preset temperature rise threshold.

[0081] Understandably, this application takes into account that the temperature sensing resistor itself may have a certain temperature during the power supply / charging process. Therefore, it also compares the absolute value of each collected temperature value with the preset temperature threshold. This allows the switching assembly to be cut off in time when the actual absolute value of the temperature exceeds the preset temperature threshold, even before the temperature rise parameter has changed to exceed the preset temperature threshold, thus putting the circuit board in a dangerous state. This improves the accuracy and comprehensiveness of judging the short circuit phenomenon in the subsequent circuits of the circuit board and further protects the safety of the circuit board.

[0082] In some optional embodiments of this disclosure, see Figure 3 , Figure 4 and Figure 5 ; Figure 3 This is a schematic diagram showing the positions of a first circuit board and a second circuit board according to an exemplary embodiment; Figure 4 This is a partial structure of an electronic device illustrated according to an exemplary embodiment. Figure 3 ; Figure 5 This is a partial circuit architecture diagram of an electronic device illustrated according to an exemplary embodiment; combined with Figures 3 to 5 As shown, the circuit board 1 includes a first circuit board 1a; the switch assembly 3 includes a first switch 3a, which is connected to the connection line between the power supply assembly 2 and the power supply input terminal of the first circuit board 1a.

[0083] The controller 5 is located on the first circuit board 1a and is electrically connected to the first switch 3a and the temperature sensing resistor 4 on the first circuit board 1a, respectively.

[0084] Here, the controller is a CPU or SoC. The first circuit board where the controller is located serves as the motherboard in the electronic device. The controller is formed by connecting multiple electrical components in the subsequent circuits on the motherboard. As the core component of the electronic device, it is used to handle the data processing and signal control of the entire electronic device.

[0085] In this embodiment, the controller is electrically connected to the temperature sensing resistor on the motherboard, and can acquire and process the temperature value of the temperature sensing resistor to determine the short circuit on the motherboard through the absolute value of the temperature value and the temperature rise parameter.

[0086] The aforementioned switch assembly includes a first switch, which is disposed between the power input terminal of the motherboard and the power supply component. When the power supply component is in the on state, it enables the power supply component to supply power to the electrical components inside the motherboard, such as the controller, or when the power supply component is in the off state, it prevents the motherboard from supplying power to the motherboard so that the motherboard cannot work.

[0087] It should be noted that when the first switch is in the off state, the motherboard is not working and the entire electronic device will be in a powered-off state. At this time, the first switch can only be activated to the on state when the charger is plugged in again (or the power button is pressed). At this time, the motherboard of the electronic device can continue to be used, and the functions of the entire electronic device are gradually activated.

[0088] Thus, by setting a temperature detection resistor on the motherboard with a controller, this embodiment of the present disclosure can effectively determine whether there is a short circuit problem in the downstream circuit of the motherboard, and then cut off the first switch in time, effectively protecting the motherboard and improving the service life and safety of electronic devices.

[0089] In some optional embodiments of this disclosure, combined with Figures 3 to 5 As shown, circuit board 1 also includes a second circuit board 1b; the second circuit board 1b and the first circuit board 1a are disposed at different locations in the electronic device;

[0090] The switch assembly 3 also includes a second switch 3b, which is connected to the connection line between the power supply assembly 2 and the power supply input terminal of the second circuit board 1b.

[0091] The controller 5 is electrically connected to the temperature sensing resistor 4 on the second switch 3b and the second circuit board 1b, respectively.

[0092] In this embodiment of the disclosure, the first circuit board is taken as the motherboard. The second circuit board is not the motherboard in the electronic device, but other functional circuit boards located in different positions from the motherboard, such as the screen PFC circuit board, the audio output circuit board, etc.

[0093] In this embodiment, a second switch can be provided on the connection line between the power supply input terminal of the second circuit board and the power supply component, and a temperature sensing resistor can also be provided on the second circuit board. At the same time, the controller on the main board is electrically connected to the second switch and the temperature sensing resistor on the second circuit board respectively, and the controller can also acquire and process the temperature values ​​of the temperature sensing resistors on other second circuit boards, so as to determine the possible short circuit phenomenon on other second circuit boards by using the absolute value of the temperature value and the temperature rise parameter.

[0094] The aforementioned switch assembly further includes a second switch. When the second switch is in the ON state, it supplies power from the power supply assembly to the internal electrical components of the second circuit board. When the second switch is in the OFF state, it does not supply power to the second circuit board, thus rendering the second circuit board inoperable. In this disclosure, the first switch and the second switch can be of the same type or different types of switches; this embodiment does not impose any limitations on this.

[0095] It is understood that, by setting a temperature sensing resistor and a second switch on a second circuit board different from the main board, and using a controller to connect the second switch and the second circuit board, the controller can independently detect water ingress short circuits on the second circuit board and shut off its power supply by simply cutting off the corresponding second switch. This effectively protects the second circuit board with the short circuit problem without affecting the normal operation of the main board (or other second circuit boards without the problem). Furthermore, by using a controller located on the main board to detect and manage the status of the second circuit board, this embodiment reduces the cost of setting up additional controllers and enriches the functionality of the main board.

[0096] In this embodiment of the disclosure, the power input terminal of the second circuit board can be directly connected to the output terminal of the power supply component through the second switch, or it can be electrically connected to the output terminal of the power supply component through the first circuit board and the second switch.

[0097] In some optional embodiments of this disclosure, combined with Figure 5 As shown, the first circuit board 1a also has a power supply output terminal electrically connected to the power supply input terminal of the first circuit board;

[0098] The second switch 3b is connected to the connection line between the power output terminal of the first circuit board 1a and the power input terminal of the second circuit board 1b.

[0099] It should be noted that, Figure 5 In the diagram, solid lines represent power lines, enabling power supply connections; dashed lines represent communication connections, enabling the transmission of temperature data, digital signals, commands, etc.

[0100] Here, the first circuit board includes a power input terminal connected to the power supply assembly, various electrical components connected to the power input terminal, and a power output terminal electrically connected to the power input terminal. The power output terminal can output a charging signal provided by the power supply assembly. The aforementioned second switch can be installed on the connection line between the power output terminal of the first circuit board and the power input terminal of the second circuit board, and connects the power input terminal of the second circuit board to the power supply assembly through the power input terminal and the power output terminal of the first circuit board.

[0101] In this disclosure, the power input terminal and power output terminal of the first circuit board can be directly connected by a power line, so that the charging signal provided by the power supply component can be distributed in parallel to the first circuit board and at least one second circuit board; of course, some electrical devices for controlling timing, power supply adjustment or power distribution can also be set between the power input terminal and power output terminal of the first circuit board, so that when the first circuit board acts as the motherboard, the timing of power supply to the second circuit board and the power distribution can be adjusted.

[0102] It is understandable that when the first circuit board is a motherboard, if multiple second circuit boards are directly connected to power components such as batteries and draw power from them, this would lead to very complex wiring and power management issues. Therefore, this embodiment utilizes a motherboard that first connects to the battery via a power input terminal and then connects to the power input terminal of at least one second circuit board via a power output terminal. This centralized power supply simplifies circuit design, reduces wiring complexity, and improves system reliability and maintainability. Furthermore, in practical applications, the power-on sequence of some chips in electronic devices has strict requirements. With multiple second circuit boards connected to the motherboard and drawing power from its power output terminal, the multiple second circuit boards can be started and used in the correct order. Finally, because in this embodiment, the second switch is directly connected between the power output terminal of the motherboard and the power input terminal of the second circuit board, the switching on and off of the second switch does not affect the power supply to the motherboard and other circuit boards. This allows for the individual disconnection of the motherboard's power supply to a second circuit board in case of a potential short circuit, preventing its continued use and mitigating safety issues arising from its continued operation.

[0103] In some optional embodiments of this disclosure, the second circuit board is disposed at the functional interface of the electronic device, and the functional circuit on the second circuit board is electrically connected to the functional interface.

[0104] The functional interfaces include data interfaces or audio interfaces.

[0105] Understandably, when dealing with water ingress issues in electronic devices, moisture typically enters through interfaces such as data interfaces, audio interfaces, and button interfaces. Consequently, circuit boards located at these interfaces are more susceptible to water ingress, leading to short circuits in the internal circuitry and, in severe cases, irreversible damage to the circuit boards.

[0106] Thus, in this embodiment of the disclosure, the functional circuit board located at the functional interface and electrically connected to the functional interface is used as the second circuit board. A temperature detection resistor is set on it and connected to the controller of the motherboard. At the same time, an electrical connection is established between the second switch and the power supply output terminal of the motherboard.

[0107] Understandably, because the controller can periodically detect the temperature value of the temperature detection module on the second circuit board located at the interface and determine the temperature rise parameters, it can promptly and effectively detect water ingress at the interface and cut off the second switch to protect the interface function. Furthermore, since the interface is more prone to water ingress and is more likely to be submerged, this disclosure can also set the controller's detection frequency for the temperature detection module on the second circuit board to be higher than the detection frequency for the temperature detection module on the motherboard; it can also increase the detection frequency for the temperature detection module on the motherboard after detecting water ingress on the second circuit board at the interface and cutting off the corresponding second switch, thereby improving the protection effect on the motherboard and ensuring the overall safety of the electronic device.

[0108] In some optional embodiments of this disclosure, combined with Figures 3 to 5 The second circuit board 1b includes at least two; the at least two second circuit boards 1b are respectively disposed at different positions in the electronic device;

[0109] The second switch 3b includes at least two; each second switch 3b is connected to the connection line between the power supply input terminal of a second circuit board 1b and the power supply component 2.

[0110] Here, at least two second circuit boards can be circuit boards with the same function or circuit boards with different functions. In this disclosure, they are collectively referred to as second circuit boards, which are only used to distinguish them from the first circuit board that serves as the motherboard. In fact, the second circuit board can be any functional circuit board with a specified function in an electronic device that is different from the motherboard.

[0111] For example, see Figure 3 , Figure 3 Of the three second circuit boards 1b shown, the second circuit board 1b on the right is the flexible circuit board for the screen; the one located on the right... Figure 3 The second circuit board 1b in the lower left corner is the connection circuit board for the user identification SIM card, which is a functional circuit board for connecting the SIM card insertion interface; the charging protection circuit board in the lower right corner is a functional circuit board for connecting the data interface.

[0112] In order to enable individual water ingress detection and power supply control for multiple second circuit boards, this embodiment of the present disclosure also provides at least two second switches. Each second switch can be connected to the power input terminal and power supply component of a second circuit board. Specifically, it can be connected to the power supply component individually, or it can be connected to the power output terminal of the motherboard and connected to the power supply component through the power supply path of the motherboard.

[0113] For example, each second circuit board is connected to the power supply component via a separate second switch. When a short circuit occurs on a second circuit board, the controller switches the connected second switch to the off state, which can suspend the power supply to the circuit board and prevent the short circuit from worsening.

[0114] Here, in this embodiment of the present disclosure, at least one third circuit board and a third switch may also be provided. Each third circuit board has the same internal circuit design as a second circuit board, serving as a backup circuit board for the second circuit board. The third switch is also connected to the power supply component. In this case, if a second circuit board malfunctions and is disabled, this embodiment of the present disclosure can temporarily adjust the third circuit board to start up through the third switch, supporting the continued execution of the corresponding function of the electronic device. If a reset command is received, the second switch is adjusted to be turned on, and the second circuit board continues to work. At this time, the power supply to the third circuit board is stopped.

[0115] In some optional embodiments of this disclosure, the first switch is a field-effect transistor switch, and / or the second switch is a field-effect transistor switch.

[0116] Here, both the first and second switches can be metal-oxide-semiconductor field-effect transistor (MOS) switches, which have a gate, a source, and a drain. Their working principle is to regulate the electric field inside the semiconductor material by controlling the gate voltage. During the regulation process, when there is an effective current flowing between the drain and the source, the MOS switch is in the on state, and otherwise it is in the off state.

[0117] In this embodiment of the disclosure, the gate of the MOS transistor switch is electrically connected to the controller, and the source and drain of the MOS transistor are respectively connected to the temperature sensing resistor and the power supply component on the circuit board. If the controller determines that there is a short circuit on the circuit board based on the absolute value or temperature rise value of the temperature sensing resistor, it will generate a control signal to adjust the gate voltage of the MOS transistor switch. By adjusting the level of the control signal, the gate voltage is increased or decreased to control the MOS transistor switch to be in the off state.

[0118] For example, a MOSFET switch can be either a PMOS switch or an NMOS switch; see [link to relevant documentation]. Figure 6, Figure 6 This is a circuit connection diagram of a first switch or a second switch according to an exemplary embodiment; Figure 6 The example switch can be a first switch 3a or a second switch 3b, and the electrical component 12 can be located in the first circuit board or the second circuit board. Figure 6 The switch in the diagram is a PMOS transistor switch, which is a type of field-effect transistor switch.

[0119] Taking a PMOS transistor switch as an example, the control signal is at a high level, thus cutting off the PMOS transistor switch and putting it in an off state. It should also be noted that if it is necessary to restore the normal use of the circuit board, a reset signal can be sent by the controller. The reset signal is opposite to the control signal. For example, for a PMOS transistor switch, the reset signal is at a low level, at which time there is electrical conduction between the source and drain electrodes of the PMOS transistor.

[0120] Understandably, because MOSFETs have the characteristics of high input impedance, low power consumption and fast switching, they can effectively and quickly respond to control signals from the controller, thereby cutting off the power supply to the circuit board in time when there is a risk of short circuit damage, ensuring safe use.

[0121] Of course, in some other optional embodiments of this disclosure, when the first switch or the second switch is set as a signal switch, it can also be specifically set as a transistor switch, such as a field-effect transistor (FET) switch, etc. This disclosure does not limit this.

[0122] In some optional embodiments of this disclosure, the controller is further configured to determine an alarm message when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold within a preset detection period for the temperature sensing resistor.

[0123] Electronic devices also include:

[0124] An information output component, electrically connected to the controller, is used to output alarm information; wherein, the information output component includes a display screen or a speaker.

[0125] Here, if the controller obtains the temperature rise parameters of the temperature sensing resistors on each circuit board (including the first and second circuit boards) and finds that the temperature rise parameter of the temperature sensing resistor on a certain circuit board exceeds a preset temperature rise threshold within a preset detection period, it can determine that the circuit board at the corresponding location may have a short circuit, specifically a short circuit caused by water ingress. At this time, while generating a control signal to cut off the switching component, the controller will also simultaneously generate an alarm message. This alarm message indicates which circuit board in the electronic device may have experienced water ingress, allowing the user to promptly and comprehensively understand the unhealthy usage status of the circuit boards in the electronic device. The user can then choose whether to repair the circuit board or adjust the position or environment of the electronic device to resolve the water ingress problem, further ensuring the safe use of the electronic device.

[0126] The warning information can include the circuit board number and location that may have a short circuit problem, as well as the temperature rise parameters of the temperature sensing resistor and the temperature value collected each time.

[0127] In this embodiment of the disclosure, the electronic device includes an information output component for outputting the aforementioned warning information. For example, the information output component may include a display screen, which can display visual information such as text, images, videos, and animations. Alternatively, the information output component may also include a speaker, which can output audio or other voice information. Of course, the aforementioned information output component can also be a wireless communication module to send the warning information to other remote terminals.

[0128] In some other optional embodiments of this disclosure, the controller is also used to display the warning message when the absolute value of the temperature sensing resistor on the circuit board changes from less than or equal to a preset temperature threshold to greater than the preset temperature threshold.

[0129] Here, whether the temperature sensing resistor's reading is greater than a preset temperature threshold or the temperature rise parameter of the temperature sensing resistor within a preset detection period is greater than the preset temperature rise threshold, it indicates that the temperature sensing resistor indicates a potential short circuit problem on the circuit board. The power supply to this circuit board should be cut off immediately to prevent damage to subsequent circuits and safety issues caused by the circuit board's continued operation. Therefore, this embodiment of the present disclosure will generate the aforementioned warning information when either of the above two situations occurs, thereby improving the user experience of using electronic devices.

[0130] The following description uses a mobile phone as an example of the electronic device disclosed in this disclosure.

[0131] With the development of electronic devices, mobile phones have become an indispensable part of people's lives. Mobile phones contain many circuit boards that support various functions. During actual use, water damage is a common problem, especially if the device is dropped into water. Moisture contact with the circuit boards can cause short circuits. If left untreated for a long time, these short circuits can further damage the circuit boards, affecting the phone's usability.

[0132] Therefore, in this embodiment of the disclosure, an NTC can be installed on the main power path of the circuit board (the path between the power input terminal and the electrical components of the subsequent circuit). By collecting the temperature value of the NTC and analyzing the temperature rise parameter, the presence of a short circuit in the subsequent circuit can be determined using the temperature value and the temperature rise parameter. Here, in this embodiment of the disclosure, a short circuit in the subsequent circuit is considered to exist when at least one of the following two judgment conditions occurs: the absolute value change of any temperature value collected by the NTC is greater than a preset temperature threshold, or the temperature rise parameter of the NTC changes to be greater than the preset temperature rise threshold within a preset detection period.

[0133] Here, this embodiment of the disclosure takes into account the phenomenon that the temperature of the circuit board will rise sharply when water enters it. Therefore, the temperature rise parameter of the NTC is determined, and the short circuit of the circuit board is determined by analyzing the temperature rise rate. Compared with judging whether there is a short circuit of the circuit board based solely on whether the absolute value of the NTC temperature exceeds a specified temperature threshold, using the temperature rise parameter to determine whether a short circuit has occurred in the subsequent circuit can detect the short circuit problem in the subsequent circuit before the temperature rises to the specified temperature threshold, thereby taking protective actions for the circuit board in advance and reducing the risk of the circuit board being burned out.

[0134] In addition, the embodiments of this disclosure can also combine whether the absolute value of the NTC temperature value exceeds a preset temperature threshold to determine whether there is a short circuit on the circuit board, thereby improving the accuracy and comprehensiveness of short circuit detection on the circuit board.

[0135] Here, combined Figures 1 to 5Temperature sensing resistors (NTCs) 4 can be installed at the power input terminals 11 of the first circuit board 1a (motherboard) and multiple second circuit boards 1b of the electronic device. The controller 5 on the motherboard can detect and analyze the temperature of the NTCs to determine whether each circuit board has a water ingress short circuit problem. Furthermore, the motherboard is connected to the power assembly 2 (battery) via a first switch 3a, and the second circuit boards 1b are connected to the battery via second switches 3b. Thus, when the phone is submerged in water, the controller 5 can determine the location of the submerged circuit board based on the absolute temperature value and / or temperature rise parameters of each NTC. If the submerged circuit board is a second circuit board 1b, the corresponding second switches 3b can be disconnected without affecting other functions of the phone, and the user will be notified of the water ingress location via the phone's display screen or speaker. This function is limited and can be restored after the water dries. If the submerged circuit board is the motherboard, the first switch 3a is directly disconnected, cutting off the motherboard's power supply and protecting the overall safety of the electronic device. In this case, the first switch will only be activated again when the charger is plugged in, thereby activating the phone's motherboard and each of the second circuit boards.

[0136] This embodiment of the disclosure improves the comprehensiveness and accuracy of water ingress short circuit detection of the circuit board by setting an NTC on the circuit board and using a controller to detect the temperature value and temperature rise parameters of the NTC. At the same time, by providing a switching component, when a water ingress short circuit problem is detected on the circuit board, over-temperature protection of the circuit board can be achieved, thereby improving the safety of electronic equipment.

[0137] Figure 7 This is a structural block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 700 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0138] Reference Figure 7 The electronic device 700 may include one or more of the following components: a processing component 702, a memory 704, a power component 706, a multimedia component 708, an audio component 710, an input / output (I / O) interface 712, a sensor component 714, and a communication component 716.

[0139] Processing component 702 typically controls the overall operation of electronic device 700, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 702 may include one or more processors 720 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 702 may include one or more modules to facilitate interaction between processing component 702 and other components. For example, processing component 702 may include a multimedia module to facilitate interaction between multimedia component 708 and processing component 702.

[0140] Memory 704 is configured to store various types of data to support the operation of device 700. Examples of this data include instructions for any application or method operating on electronic device 700, contact data, phonebook data, messages, pictures, videos, etc. Memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0141] Power component 706 provides power to various components of electronic device 700. Power component 706 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 700. Here, the battery in the power supply component described above in this embodiment of the present disclosure is located within the power component.

[0142] Multimedia component 708 includes a screen that provides an output interface between the electronic device 700 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 708 includes a front-facing camera and / or a rear-facing camera. When the device 700 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0143] Audio component 710 is configured to output and / or input audio signals. For example, audio component 710 includes a microphone (MIC) configured to receive external audio signals when electronic device 700 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 704 or transmitted via communication component 716. In some embodiments, audio component 710 also includes a speaker for outputting audio signals.

[0144] I / O interface 712 provides an interface between processing component 702 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0145] Sensor assembly 714 includes one or more sensors for providing state assessments of various aspects of electronic device 700. For example, sensor assembly 714 may detect the on / off state of device 700, the relative positioning of components such as the display and keypad of electronic device 700, changes in position of electronic device 700 or a component of electronic device 700, the presence or absence of user contact with electronic device 700, orientation or acceleration / deceleration of electronic device 700, and temperature changes of electronic device 700. Sensor assembly 714 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 714 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 714 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0146] Communication component 716 is configured to facilitate wired or wireless communication between electronic device 700 and other devices. Electronic device 700 can access wireless networks based on communication standards, such as Wi-Fi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 716 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 716 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0147] In an exemplary embodiment, the electronic device 700 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0148] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 704 including instructions that can be executed by a processor 720 of an electronic device 700. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, or optical data storage device, etc.

[0149] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0150] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. An electronic device, characterized in that, include: A circuit board has a power supply input terminal and an electrical component, wherein the electrical component is electrically connected to the power supply input terminal; A power supply assembly, electrically connected to the power supply input terminal, is used to supply power to the electrical components on the circuit board; A switching assembly is disposed on the connection line between the power supply assembly and the power input terminal; A temperature sensing resistor is disposed on the circuit board and located on the connection line between the power supply input terminal and the electrical device; The switching component is used to disconnect the electrical connection between the power supply component and the power supply input terminal when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold.

2. The electronic device according to claim 1, characterized in that, The electronic device also includes: The controller is electrically connected to the temperature sensing resistor on the circuit board and the switching assembly, respectively, and is used to acquire the temperature rise parameter of the temperature sensing resistor within a preset detection period for the temperature sensing resistor; and when the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold, it outputs a control signal for the switching assembly. The control signal is used to instruct the switching assembly to disconnect the electrical connection between the power supply assembly and the power supply input terminal.

3. The electronic device according to claim 2, characterized in that, The circuit board includes a first circuit board; the switch assembly includes a first switch, which is connected to the connection line between the power supply assembly and the power supply input terminal of the first circuit board. The controller is disposed on the first circuit board and is electrically connected to the first switch and the temperature sensing resistor on the first circuit board, respectively.

4. The electronic device according to claim 3, characterized in that, The circuit board also includes a second circuit board; the second circuit board and the first circuit board are disposed at different locations in the electronic device; The switching assembly further includes a second switch, which is connected to the connection line between the power supply assembly and the power supply input terminal of the second circuit board; The controller is electrically connected to the second switch and the temperature sensing resistor on the second circuit board, respectively.

5. The electronic device according to claim 4, characterized in that, The first circuit board also has a power supply output terminal electrically connected to the power supply input terminal of the first circuit board; The second switch is connected on the connection line between the power output terminal of the first circuit board and the power input terminal of the second circuit board.

6. The electronic device according to claim 4, characterized in that, The second circuit board is disposed at the functional interface of the electronic device, and the functional circuit on the second circuit board is electrically connected to the functional interface; The functional interfaces include data interfaces or audio interfaces.

7. The electronic device according to claim 4, characterized in that, The second circuit board includes at least two; the at least two second circuit boards are respectively disposed at different locations in the electronic device; The second switch includes at least two; each of the second switches is connected to a connection line between a power input terminal of a second circuit board and the power supply assembly.

8. The electronic device according to claim 4, characterized in that, The first switch is a field-effect transistor switch, and / or the second switch is a field-effect transistor switch.

9. The electronic device according to any one of claims 2 to 8, characterized in that, The controller is also configured to determine an alarm message when, within a preset detection period for the temperature sensing resistor, the temperature rise parameter of the temperature sensing resistor changes from less than or equal to a preset temperature rise threshold to greater than the preset temperature rise threshold. The electronic device also includes: An information output component, electrically connected to the controller, is used to output the warning information; The information output component includes a display screen or a speaker.

10. The electronic device according to any one of claims 1 to 8, characterized in that, The switching assembly is further configured to disconnect the electrical connection between the power supply assembly and the power supply input terminal when the absolute value of the temperature detection resistor changes from less than or equal to a preset temperature threshold to greater than a preset temperature threshold.

11. The electronic device according to any one of claims 1 to 8, characterized in that, The temperature sensing resistor is a thermistor.

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