Power supply control circuit and terminal device

Abstract

The present disclosure relates to a power control circuit and a terminal device. The power control circuit is applied to the terminal device, and comprises a battery module, a battery connector, a switch module and a power key module. The battery connector has a main power supply end and an auxiliary power supply end electrically connected to the battery module. The switch module is connected to a connection line between the main power supply end and the battery module, and is used to disconnect the connection line so that the terminal device enters a low-power mode. The power key module has a power key and a first detection end electrically connected. The power key and the first detection end are both electrically connected to the auxiliary power supply end. The first detection end is used to trigger the terminal device to exit the low-power mode by changing the level under the action of external force on the power key. The power consumption of the present disclosure can be reduced to the maximum extent.

Description

Technical Field

[0001] This disclosure relates to the field of electronic circuit technology, and in particular to a power control circuit and terminal device. Background Technology

[0002] With the advancement of technology, mobile phones, tablets, and other terminal devices are constantly being updated and iterated, bringing great convenience to people's daily production and life. To facilitate the transportation and storage of these devices, they are often set to enter a low-power mode. In related technologies, this is achieved by disconnecting the internal switching transistors of the auxiliary power management integrated circuit (PMIC). However, devices connected to the VBAT network at the branch power supply end, such as RF power amplifiers, audio power amplifiers, and display power management integrated circuits, still consume power, resulting in significant leakage current loss during shutdown. Utility Model Content

[0003] To overcome the problems existing in related technologies, this disclosure provides a power control circuit and terminal device that can minimize power consumption during shutdown leakage.

[0004] According to a first aspect of the present disclosure, a power control circuit is provided, applied to a terminal device, comprising:

[0005] Battery module, battery connector, switch module, and power button module;

[0006] The battery connector has a main power terminal and an auxiliary power terminal that are electrically connected to the battery module.

[0007] The switch module is connected to the connection line between the main power supply terminal and the battery module, and is used to disconnect the connection line so that the terminal device enters a low power mode.

[0008] The power button module has an electrically connected power button and a first detection terminal;

[0009] The power button and the first detection terminal are both electrically connected to the auxiliary power terminal;

[0010] The first detection terminal is used to trigger the terminal device to exit the low-power mode by causing a level change when the power button is applied by an external force.

[0011] In some embodiments, the power button module further includes:

[0012] Power-on enable terminal;

[0013] A one-way conduction component is electrically connected to the power button, the auxiliary power terminal, the first detection terminal, and the power-on enable terminal, respectively, and is used to prevent the power signal from flowing to the power-on enable terminal when the auxiliary power terminal transmits a power signal to the power button.

[0014] In some embodiments, the unidirectional conductor includes a diode;

[0015] The anode of the diode is electrically connected to the power-on enable terminal;

[0016] The cathode of the diode is electrically connected to the power switch, the first detection terminal, and the auxiliary power terminal, respectively.

[0017] In some embodiments, the first detection terminal is grounded via the power switch, and the level of the first detection terminal decreases from a first level to a second level.

[0018] In some embodiments, the power button includes:

[0019] The first power supply contact that is grounded;

[0020] The second power contact spring is separately disposed from the first power contact spring and is electrically connected to the first detection terminal and the auxiliary power terminal;

[0021] The keycap, under the action of the external force, causes the first power spring to contact the second power spring, thereby reducing the voltage level at the first detection terminal.

[0022] In some embodiments, the power control circuit further includes a pull-up resistor module;

[0023] The first detection terminal is electrically connected to the auxiliary power supply terminal through the pull-up resistor module and has the first voltage level.

[0024] In some embodiments, the pull-up resistor module includes:

[0025] The first pull-up resistor has one end electrically connected to the auxiliary power supply terminal and the other end connected to a node; the node is electrically connected to the first detection terminal and the power switch.

[0026] The second pull-up resistor has one end electrically connected to the node and the other end grounded.

[0027] In some embodiments, the battery connector further has a second detection terminal; the power control circuit further includes a fuel gauge;

[0028] The power meter has a third detection terminal and a switch control terminal;

[0029] The third detection terminal is electrically connected to the first detection terminal via the second detection terminal;

[0030] The switch control terminal is electrically connected to the switch module and is used to control the switch module to conduct the connection line when the level of the first detection terminal changes.

[0031] In some embodiments, the fuel gauge further includes a signal terminal;

[0032] The signal terminal is used to receive a low-power command, causing the switch module to disconnect the connection line.

[0033] According to a second aspect of the present disclosure, a terminal device is provided, comprising:

[0034] Device host;

[0035] As in the power control circuit described in the first aspect above.

[0036] The main power supply terminal of the power control circuit is electrically connected to the device host and is used to supply power to the device host.

[0037] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0038] This embodiment of the disclosure disconnects the connection line via a switch module, thus severing the electrical connection between the battery module and the devices mounted on the main power supply. This minimizes power consumption during shutdown, enabling better storage and transportation of the terminal device. Furthermore, this embodiment improves the power button module by adding a first detection terminal to detect changes in power level and exit low-power mode. This further minimizes power consumption during shutdown while enhancing control over the terminal device's low-power mode, improving the user experience.

[0039] 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

[0040] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0041] Figure 1 This is a schematic diagram of a power control circuit according to an exemplary embodiment.

[0042] Figure 2 This is a schematic diagram of a power switch module in a power control circuit according to an exemplary embodiment.

[0043] Figure 3 This is a schematic diagram of the fuel gauge connection structure in a power control circuit according to an exemplary embodiment.

[0044] Figure 4 This is a schematic diagram illustrating the connection between the power control circuit and the device host in a terminal device according to an exemplary embodiment.

[0045] Figure 5 This is a structural block diagram of a terminal device according to an exemplary embodiment. Detailed Implementation

[0046] 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 disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0047] This disclosure provides a power control circuit. Figure 1 This is a schematic diagram of a power control circuit according to an exemplary embodiment. Figure 1 As shown, the power control circuit is applied in the terminal device. The power control circuit includes: battery module 101, battery connector 102, switch module 103 and power button module 104.

[0048] The battery connector 102 has a main power terminal VBATT_2S_P and an auxiliary power terminal VBATT_2S that are electrically connected to the battery module 101.

[0049] The switch module 103 is connected to the connection line between the main power supply terminal VBATT_2S_P and the battery module 101, and is used to disconnect the connection line so that the terminal device enters a low power mode.

[0050] The power button module 104 has an electrically connected power button 1041 and a first detection terminal A;

[0051] The power button 1041 and the first detection terminal A are both electrically connected to the auxiliary power terminal VBATT_2S;

[0052] The first detection terminal A is used to trigger the terminal device to exit the low power mode by changing the level when the power button 1041 is subjected to external force.

[0053] In this embodiment, the power control circuit is applied to scenarios where a terminal device is controlled to enter or exit a low-power mode. For example, to facilitate the transportation or storage of the terminal device, after the terminal device is powered off, the switching module in the power control circuit can be controlled to disconnect the connection line between the main power supply terminal and the battery module, thereby enabling the terminal device to enter a low-power mode; and while the terminal device is in low-power mode, a change in voltage level is detected to trigger the terminal device to exit the low-power mode. This not only reduces the possibility of terminal devices failing to power on at the factory due to excessively long transportation or storage times, but also makes the control of the terminal device's low-power mode more flexible, improving the user experience.

[0054] In this embodiment of the disclosure, the battery module may be composed of multiple battery cells connected in series. For example, battery module 101 may be composed of two battery cells, and the battery module can provide a supply voltage of 8V.

[0055] The aforementioned battery connector is a battery board-to-board connector, which is used at least for physical and electrical connection with the motherboard of the terminal device.

[0056] Here, the battery connector has a main power terminal and an auxiliary power terminal. The main power terminal can be the system power terminal, which is electrically connected to both the battery module and the device host, and is used to provide a first power supply signal to the device host of the terminal device.

[0057] The auxiliary power supply terminal is electrically connected to the battery module and the power button module respectively, and is used to provide a second power supply signal to the power button module so that the power button module can still detect button operation when the terminal device is turned off to trigger the terminal device to turn on or exit the low power mode.

[0058] The aforementioned switch module is connected to the connection line between the main power supply and the battery module, and is used to disconnect the connection line, allowing the terminal device to enter a low-power mode.

[0059] It should be noted that, when the terminal device is powered off, the control switch module can disconnect the connection between the main power supply and the battery module. This disconnects the electrical connection between the battery module and the devices connected to the main power supply, preventing leakage current from flowing to these devices and minimizing power consumption during shutdown.

[0060] Here, the switching module is also used as a charge / discharge protection switch for the battery module. This switching module can be composed of multiple metal-oxide-semiconductor field-effect transistors (MOS transistors). For example, the switching module can be composed of two MOS transistors. Or, for example... Figure 3 As shown, the switching module can be composed of four MOSFETs Q1, Q2, Q3 and Q4 connected in series and parallel.

[0061] In this embodiment of the disclosure, the power button module has a power button that can be applied by external force.

[0062] Here, the power button can be electrically connected to the battery module via an auxiliary power supply. This allows the battery module to continue supplying power to the power button even when the device is powered off, ensuring the power button remains functional.

[0063] In this embodiment, the power button module further includes a first detection terminal, which is electrically connected to the power button and an auxiliary power terminal, and is used to cause a level change when the power button is subjected to external force. Thus, by detecting the level change at the first detection terminal, the terminal device can be triggered to exit low-power mode.

[0064] It should be noted that the power button can be grounded under external force, which will cause a change in the voltage level at the first detection terminal.

[0065] In this embodiment of the present disclosure, when the terminal device is in a power-off and low-power mode, if an external force is applied to the power button to cause a change in the level of the first detection terminal, the terminal device can exit the low-power mode.

[0066] It should be noted that a change in the level of the first detection terminal may include a change from a high level to a low level, or a change in the level of the first detection terminal that is fast or slow, etc. This disclosure does not limit this.

[0067] Here, to better implement the function of exiting low-power mode, this embodiment of the disclosure can trigger the terminal device to exit low-power mode when the duration of the detected level change at the first detection terminal is a preset time. The preset time can be set according to actual needs, and this embodiment of the disclosure does not limit it.

[0068] For example, if the level of the first detection terminal is pulled low for a duration of 2 seconds, the terminal device is triggered to exit the low-power mode.

[0069] In this embodiment of the disclosure, the power button module may also have a power-on enable terminal, which may also be electrically connected to the power button to trigger the power-on function of the terminal device.

[0070] Here, when the terminal device is powered off and out of low-power mode, applying external force to the power button can trigger the terminal device to power on, thus realizing the power-on function.

[0071] It is understood that, in this embodiment of the present disclosure, the switch module is connected to the connection line between the main power supply terminal and the battery module, and is used to disconnect the connection line so that the terminal device enters a low power mode; the power button module has a first detection terminal, which is electrically connected to the auxiliary power supply terminal and the power button, and is used to cause a level change when the power button is subjected to external force to trigger the terminal device to exit the low power mode.

[0072] Thus, on the one hand, by disconnecting the connection line through the switch module, the electrical connection between the battery module and the devices connected to the main power supply can be severed, minimizing power consumption during shutdown and enabling better storage and transportation of terminal devices. On the other hand, by improving the power button module and adding a first detection terminal to exit low-power mode by detecting changes in voltage level, power consumption during shutdown can be minimized while better controlling the low-power mode of the terminal device, improving the user experience.

[0073] For example, in the charging and discharging control of a dual-cell (8V) battery in a terminal device, multiple devices are connected to both the main power supply 8V path and the auxiliary power supply 4V path. Compared to disconnecting the internal switching transistors of the PMIC, this embodiment of the disclosure disconnects the connection between the main control terminal and the battery module via a switching module, which not only reduces leakage power consumption on the main power supply 8V path but also reduces leakage power consumption on the auxiliary power supply 4V path. Verification has shown that this embodiment of the disclosure can reduce 8V and 400uA of power-off leakage current.

[0074] In some embodiments, such as Figure 2 As shown, the power button module 104 further includes:

[0075] Power-on enable terminal PHONE_ON_N;

[0076] The unidirectional conduction component 1042 is electrically connected to the power button 1041, the auxiliary power terminal VBATT_2S, the first detection terminal A, and the power-on enable terminal PHONE_ON_N, respectively, and is used to prevent the power signal from flowing to the power-on enable terminal PHONE_ON_N when the auxiliary power terminal VBATT_2S transmits a power signal to the power button 1041.

[0077] In this embodiment of the present disclosure, when an external force is applied to the power button, the power button can transmit the button signal to the power-on enable terminal to trigger the terminal device to power on.

[0078] The aforementioned unidirectional conduction device has a unidirectional conduction function, which can prevent the power signal from flowing to the power-on enable terminal and allow the key signal to be transmitted to the power-on enable terminal.

[0079] It should be noted that an impedance component (such as a resistor, capacitor, or inductor) can also be set between the unidirectional conduction component and the power-on enable terminal.

[0080] For example, such as Figure 2 As shown, a capacitor 1043 and a resistor 1044 can be provided between the unidirectional conduction element 1042 and the switch enable terminal PHONE_ON_N. One end of the resistor 1044 is connected to the unidirectional conduction element 1042, and the other end is connected to the switch enable terminal PHONE_ON_N. One end of the capacitor 1043 is grounded, and the other end is connected to the connection line between the unidirectional conduction element 1042 and the resistor 1044. Of course, the capacitor 1043 can also be a capacitor used for debugging, connected to the connection line between the unidirectional conduction element 1042 and the resistor 1044 during debugging; this embodiment does not limit this.

[0081] It is understandable that by setting a guide conductor to prevent the power signal from flowing to the power-on enable terminal, the leakage current to the power-on enable terminal when the auxiliary power supply transmits the power signal can be reduced, thereby further reducing the power consumption of the terminal device during shutdown leakage current.

[0082] In some embodiments, such as Figure 2 As shown, the unidirectional conductor 1042 includes a diode;

[0083] The anode of the diode is electrically connected to the power-on enable terminal PHONE_ON_N;

[0084] The cathode of the diode is electrically connected to the power switch 1041, the first detection terminal A, and the auxiliary power terminal VBATT_2S, respectively.

[0085] In this embodiment of the disclosure, the diode may include a Schottky diode, or other diodes such as varactor diodes, etc., and this embodiment of the disclosure does not limit the scope of the diode.

[0086] It is understandable that the anode of the diode is connected to the power-on enable terminal, and the cathode of the diode is connected to the first detection terminal. Therefore, after the first detection terminal is pulled up by the auxiliary power supply terminal, the diode is reverse biased, which can prevent the power signal from flowing to the power-on enable terminal, thereby reducing leakage power consumption.

[0087] In some embodiments, such as Figure 2 As shown, the first detection terminal A is grounded through the power button 1041, and the level of the first detection terminal A decreases from the first level to the second level.

[0088] In this embodiment of the disclosure, when the power button is not activated, the power button is not connected to ground, and the first detection terminal cannot be grounded through the power button. At this time, the first detection terminal is connected to the auxiliary power supply terminal, so the level of the first detection terminal is the first level.

[0089] When the power switch is subjected to external force, the first detection terminal is grounded through the power switch, and the voltage level of the first detection terminal is pulled low to the second voltage level. Here, the second voltage level is lower than the first voltage level.

[0090] It is understandable that the first detection terminal is grounded through the power button, which can make the level of the first detection terminal go low. In this way, the terminal device can be triggered to exit the low power mode by detecting the low level of the first detection terminal.

[0091] In some embodiments, such as Figure 2 As shown, the power button 1041 includes:

[0092] The first power supply spring 1041a is grounded;

[0093] The second power spring 1041b is separately disposed from the first power spring 1041a and is electrically connected to the first detection terminal A and the auxiliary power terminal VBATT_2S.

[0094] keycap( Figure 2 (Not shown in the image), under the action of the external force, the first power spring 1041a is driven to contact the second power spring 1041b, so that the level of the first detection terminal A is reduced.

[0095] In this embodiment, the power button may consist of a first power spring, a second power spring, and a keycap. Here, the keycap may be exposed outside the terminal device and used to withstand external force.

[0096] It should be noted that when the keycap is not subjected to external force, the first power contact spring and the second power contact spring are separated and will not come into contact.

[0097] When the keycap is subjected to external force, the first power contact spring can deform to contact the second power contact spring, or the first power contact spring can move to contact the second power contact spring. In this way, based on the short circuit between the first and second power contact springs, the first detection terminal can be grounded through the second power contact spring and the first power contact spring, thereby reducing the voltage level of the first detection terminal from the first voltage level to the second voltage level.

[0098] It is understandable that by setting the first detection terminal to be electrically connected to the second power contact and the first power contact to be grounded, the level of the first detection terminal can change when the keycap is subjected to external force, thereby enabling the function of exiting the low power mode.

[0099] In some embodiments, such as Figure 2 As shown, the power control circuit also includes a pull-up resistor module 1045;

[0100] The first detection terminal A is electrically connected to the auxiliary power supply terminal VBATT_2S through the pull-up resistor module 1045 and has the first voltage level.

[0101] In this embodiment, the voltage at the auxiliary power supply terminal is divided by the pull-up resistor module. The first level of the first detection terminal is related to the resistance of the pull-up resistor module and can be determined based on the level of the auxiliary voltage terminal and the level of the pull-up resistor module.

[0102] Understandably, on the one hand, the pull-up resistor module can achieve voltage division, allowing the battery module to better power the power button; on the other hand, by setting the pull-up resistor module, the first detection terminal can have a first level, thereby enabling the level of the first detection terminal to switch from the first level to the second level when the power button is subjected to external force.

[0103] In some embodiments, such as Figure 2 As shown, the pull-up resistor module 1045 includes:

[0104] The first pull-up resistor 1045a has one end electrically connected to the auxiliary power supply terminal VBATT_2S and the other end connected to a node; the node is electrically connected to the first detection terminal A and the power switch 1041.

[0105] The second pull-up resistor 1045b has one end electrically connected to the node and the other end grounded.

[0106] In this embodiment, the first pull-up resistor and the second pull-up resistor can be flexibly set according to actual needs, and this embodiment does not limit this. For example, the first pull-up resistor can be set to 680 kΩ, and the second pull-up resistor can be set to 300 kΩ.

[0107] It is understandable that the first pull-up resistor enables the battery module to provide power to the power button. Furthermore, by setting the first pull-up resistor and the second pull-up resistor, the first detection terminal can have a first level, which facilitates subsequent detection of the first detection terminal dropping from the first level to the second level, thereby triggering the terminal device to exit the low-power mode.

[0108] In some embodiments, such as Figure 3 As shown, the battery connector 102 also has a second detection terminal B; the power control circuit also includes a fuel gauge 105;

[0109] The fuel gauge 105 has a third detection terminal C and a switch control terminal ( Figure 3 DSG, CHG);

[0110] The third detection terminal C is electrically connected to the first detection terminal A through the second detection terminal B;

[0111] The switch control terminal is electrically connected to the switch module 103 and is used to control the switch module 103 to conduct the connection line when the level of the first detection terminal A changes.

[0112] In this embodiment of the present disclosure, the second detection terminal is electrically connected to the first detection terminal and the third detection terminal, so that when the level of the first detection terminal changes, the level of the third detection terminal will also change, thereby enabling the power meter to sense the level change of the first detection terminal.

[0113] The switch control terminal of the aforementioned power meter is electrically connected to the switch module, which can control the switch module to turn the connection line on or off.

[0114] It should be noted that when the terminal device is in low power mode, the power meter can control the switch module to turn on the connection line based on the level change of the first detection terminal, that is, from the first level to the second level. In this way, the battery module can supply power to the devices connected to the main control terminal, thus enabling the terminal device to exit the low power mode.

[0115] It is understood that the embodiments of this disclosure not only have a first detection terminal in the power button module, but also a second detection terminal in the battery connector and a third detection terminal in the fuel gauge. The third detection terminal is connected to the first detection terminal through the second detection terminal, so that the fuel gauge can detect the voltage change of the first detection terminal. Based on the voltage change of the first detection terminal, the switch module can be controlled to exit the low power mode.

[0116] In some embodiments, such as Figure 3 As shown, the fuel gauge 105 also has signal terminals (SCL, SDA in the figure);

[0117] The signal terminal is used to receive a low-power command, causing the switch module 103 to disconnect the connection line.

[0118] In this embodiment of the disclosure, such as Figure 3 As shown, the signal terminals may include a data line (SDA) and a clock line (SCL).

[0119] It should be noted that, as Figure 3 As shown, the data line SDA and clock line SCL of the fuel gauge can be connected to the main control chip AP of the terminal device via the battery connector. This allows the main control chip to transmit low-power commands to the fuel gauge 105. Based on the low-power commands received at the signal terminal, the fuel gauge chip can then control the switching module to disconnect the connection line, thereby entering low-power mode.

[0120] Here, in order to better electrically connect the battery module, fuel gauge, switch module, and battery connector, the power control circuit proposed in this embodiment can be as follows: Figure 3 As shown.

[0121] The positive terminal of battery module 101 can be electrically connected to the main power terminal VBAT_2S_P of battery connector 102 via switch module 103. The positive terminal of battery module 101 can also be directly connected to the power terminal VDD of fuel gauge 105 and the auxiliary power terminal VBATT_2S of battery connector 102. The negative terminal of battery module 101 can be electrically connected to the ground terminal GND of fuel gauge 105 and the ground terminal GND of battery connector 102.

[0122] In this embodiment of the disclosure, the power meter can add a delay to the shutdown of the terminal device, so that the terminal device can better complete the shutdown process when shutting down, reduce the abnormal power-on caused by the incomplete shutdown process, and enable the terminal device to power on better after shutdown.

[0123] It is understood that, in this embodiment of the present disclosure, the fuel gauge can not only control the exit from the low power mode by detecting the level change of the first detection terminal, but also receive a low power command to better control the switch module to disconnect in order to enter the low power mode.

[0124] This disclosure also proposes a terminal device, such as... Figure 4 As shown, the terminal device 300 includes:

[0125] Equipment host 200;

[0126] The power control circuit 100 as described in one or more of the above embodiments

[0127] The main power supply terminal of the power control circuit is electrically connected to the device host and is used to supply power to the device host.

[0128] The aforementioned terminal devices may include smartphones, tablets, laptops, or wearable devices, including smartwatches or smart bracelets.

[0129] The aforementioned device host may include a motherboard, processor, and various functional modules (RF module, audio module, or display module), etc.

[0130] Here, by controlling the switching module in the power control circuit to disconnect the connection line between the battery module and the main power supply, it is possible to prevent leakage current from flowing to the device host.

[0131] Understandably, the terminal device includes a power control circuit. By disconnecting the connection line through the switch module, the electrical connection between the battery module and the devices connected to the main power supply can be severed, minimizing power consumption during shutdown and enabling better storage and transportation of the terminal device. On the other hand, by improving the power button module and adding a first detection terminal to detect changes in voltage level to exit low-power mode, power consumption during shutdown can be minimized while better controlling the low-power mode of the terminal device, improving the user experience.

[0132] Figure 5 This is a structural block diagram illustrating a terminal device according to an exemplary embodiment. For example, the terminal device may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0133] Reference Figure 5 The terminal device may include one or more of the following components: processing component 502, memory 504, power supply component 506, multimedia component 508, audio component 510, input / output (I / O) interface 512, sensor component 514, and communication component 516.

[0134] Processing component 502 typically controls the overall operation of the terminal device, such as operations associated with at least one of display, telephone call, data communication, camera operation, and recording operation. Processing component 502 may include one or more processors 520 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 502 may include one or more modules to facilitate interaction between processing component 502 and other components. For example, processing component 502 may include a multimedia module to facilitate interaction between multimedia component 508 and processing component 502.

[0135] Memory 504 is configured to store various types of data to support operation on the terminal device. Examples of such data include at least one of the following: instructions for any application or method operating on the terminal device, contact data, phonebook data, messages, pictures, and videos. Memory 504 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.

[0136] Power supply component 506 provides power to various components of the terminal device. Power supply component 506 may include at least one of the following: a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the terminal device.

[0137] Multimedia component 508 includes a screen that provides an output interface between the terminal device 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 touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 508 includes a front-facing camera and / or a rear-facing camera. When the terminal device 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.

[0138] Audio component 510 is configured to output and / or input audio signals. For example, audio component 510 includes a microphone (MIC) configured to receive external audio signals when the terminal device 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 504 or transmitted via communication component 516. In some embodiments, audio component 510 also includes a speaker for outputting audio signals.

[0139] I / O interface 512 provides an interface between processing component 502 and peripheral interface modules, such as keyboards, click wheels, and buttons. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0140] Sensor assembly 514 includes one or more sensors for providing status assessments of various aspects of the terminal device. For example, sensor assembly 514 can detect the on / off state of the terminal device, the relative positioning of components such as the terminal device's display and keypad, changes in the position of the terminal device or a component within it, the presence or absence of user contact with the terminal device, the terminal device's orientation or acceleration / deceleration, and temperature changes. Sensor assembly 514 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 514 may also include an optical sensor, such as a Complementary Metal Oxide Semiconductor (CMOS) or Charge Coupled Device (CCD) image sensor, for use in imaging applications. In some embodiments, sensor assembly 514 may also include, but is not limited to, at least one of the following: an accelerometer, a gyroscope, a magnetometer, a pressure sensor, and a temperature sensor.

[0141] Communication component 516 is configured to facilitate wired or wireless communication between the terminal device and other devices. The terminal device can access wireless networks based on communication standards, such as Wi-Fi, 4G, 5G, or combinations thereof. In one exemplary embodiment, communication component 516 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 516 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), Infrared Data Association (IrDA), Ultra Wide Band (UWB), Bluetooth (BT), and other technologies.

[0142] In an exemplary embodiment, the terminal device 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.

[0143] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure 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 this disclosure are indicated by the claims.

[0144] It should be understood that this disclosure is not limited to the precise structures 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 disclosure is limited only by the appended claims.

Claims

1. A power supply control circuit, characterized in that, Applications in terminal devices include: battery modules, battery connectors, switch modules, and power button modules; The battery connector has a main power terminal and an auxiliary power terminal that are electrically connected to the battery module. The switch module is connected to the connection line between the main power supply terminal and the battery module, and is used to disconnect the connection line so that the terminal device enters a low power mode. The power button module has an electrically connected power button and a first detection terminal; The power button and the first detection terminal are both electrically connected to the auxiliary power terminal; The first detection terminal is used to trigger the terminal device to exit the low-power mode by causing a level change when the power button is applied by an external force.

2. The power control circuit according to claim 1, characterized in that, The power button module also includes: Power-on enable terminal; A one-way conduction component is electrically connected to the power button, the auxiliary power terminal, the first detection terminal, and the power-on enable terminal, respectively, and is used to prevent the power signal from flowing to the power-on enable terminal when the auxiliary power terminal transmits a power signal to the power button.

3. The power control circuit according to claim 2, characterized in that, The unidirectional conduction element includes a diode; The anode of the diode is electrically connected to the power-on enable terminal; The cathode of the diode is electrically connected to the power switch, the first detection terminal, and the auxiliary power terminal, respectively.

4. The power control circuit according to any one of claims 1 to 3, characterized in that, The first detection terminal is grounded through the power switch, and the level of the first detection terminal decreases from the first level to the second level.

5. The power control circuit according to claim 4, characterized in that, The power button includes: The first power supply contact that is grounded; The second power contact spring is separately disposed from the first power contact spring and is electrically connected to the first detection terminal and the auxiliary power terminal; The keycap, under the action of the external force, causes the first power spring to contact the second power spring, thereby reducing the voltage level at the first detection terminal.

6. The power control circuit according to claim 4, characterized in that, The power control circuit also includes a pull-up resistor module; The first detection terminal is electrically connected to the auxiliary power supply terminal through the pull-up resistor module and has the first voltage level.

7. The power control circuit according to claim 6, characterized in that, The pull-up resistor module includes: The first pull-up resistor has one end electrically connected to the auxiliary power supply terminal and the other end connected to a node; the node is electrically connected to the first detection terminal and the power switch. The second pull-up resistor has one end electrically connected to the node and the other end grounded.

8. The power control circuit according to any one of claims 1 to 3, characterized in that, The battery connector also has a second detection terminal; the power control circuit also includes a fuel gauge. The power meter has a third detection terminal and a switch control terminal; The third detection terminal is electrically connected to the first detection terminal via the second detection terminal; The switch control terminal is electrically connected to the switch module and is used to control the switch module to conduct the connection line when the level of the first detection terminal changes.

9. The power control circuit according to claim 8, characterized in that, The fuel gauge also has a signal terminal; The signal terminal is used to receive a low-power command, causing the switch module to disconnect the connection line.

10. A terminal device, characterized in that, include: Device host; The power control circuit as described in any one of claims 1 to 9, The main power supply terminal of the power control circuit is electrically connected to the device host and is used to supply power to the device host.

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