Electronic device

Abstract

The present application provides an electronic device, including a battery, at least one charging interface, a PD controller, a battery charging controller, a first reverse charging link, at least one second reverse charging link, and a controller. The first reverse charging link is coupled to the battery charging controller; the battery charging controller includes a positive charging state and a reverse charging state. The charging interface is coupled to the battery through the first reverse charging link, and is also coupled to the power output end of the PD controller through the second reverse charging link. The PD controller is used to obtain connection information of the charging interface; the connection information is used to indicate the connection status of the charging interface and indicate the device type of the external device and / or electronic device. The controller is used to control the battery charging controller to switch to the reverse charging state and control the second reverse charging link corresponding to the charging interface connected to the receiving device to be shut down when it is determined based on the connection information of at least one charging interface that the electronic device is not in the forward charging state and any one or more charging interfaces are connected to a receiving device.

Description

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office on June 24, 2022, with application number 202210725580.5 and invention name “Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of fast charging technology, and in particular to an electronic device. Background Art

[0003] With the development of portable terminal devices, the demand for battery life of portable terminal devices has received unprecedented attention. Currently, most portable terminal devices support reverse charging function. Using the reverse charging function of a portable terminal device to charge the portable terminal device in need of charging has become a relatively popular charging solution.

[0004] However, existing reverse charging solutions have the problem of low external charging power and cannot meet the high-power fast charging needs expected by users. Summary of the Invention

[0005] The present application provides an electronic device for achieving high-power reverse charging and meeting the user's high-power reverse fast charging needs.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0007] An electronic device includes a battery, at least one charging interface, a PD controller, a first reverse charging link, at least one second reverse charging link, and a controller. The charging interface is used to connect to an external device. The PD controller is coupled to the charging interface and is used to obtain connection information of the charging interface; the connection information is used to indicate the connection status of the charging interface, which can be either a connected state or a non-connected state; the connection information is also used to indicate the device type of the external device and / or electronic device when the charging interface is in the connected state, which can be either an output device or a receiving device; the PD controller has at least one power output terminal. The first reverse charging link includes a battery charging controller; the battery charging controller includes a positive charging state and a reverse charging state. The charging interface is coupled to the battery via the first reverse charging link. A charging interface is also connected to a power output terminal via a second reverse charging link. The controller is coupled to the PD controller, the battery charging controller, and the second reverse charging link. The controller is used to control the battery charging controller to switch to the reverse charging state and control the target link to be shut down when it determines, based on the connection information of at least one charging interface, that the electronic device meets a first preset condition. Among them, the first preset condition includes that the electronic device is not in a forward charging state, and any one or more charging interfaces are connected to a receiving device; the target link includes a second reverse charging link corresponding to the charging interface connected to the receiving device.

[0008] In this electronic device, when the electronic device is not in the forward charging state, the reverse output function of the battery charging controller (i.e., the reverse charging state) is utilized to allow the battery to provide power output to the receiving device connected to the charging interface through the battery charging controller via the target link, thereby achieving reverse charging. Because this electronic device achieves reverse charging through a larger capacity battery, it can achieve greater power output, meeting the user's high-power fast charging needs.

[0009] In some design schemes of the present application, the controller is also used to: when it is determined that the electronic device meets a second preset condition, control the battery charging controller to switch to a positive charging state and control the target link to be turned on; wherein the second preset condition includes that the electronic device is in a positive charging state.

[0010] It should be noted that the battery charging controller has a forward output function (i.e., positive charging state) and a reverse output function (i.e., reverse charging state). Since only the forward output function of the battery charging controller is currently used, there is only one path in the hardware design, and therefore it is impossible to support the simultaneous existence of two functions. Based on this, in order to give priority to ensuring the normal operation of the electronic device itself, this embodiment controls the battery charging controller to switch to the positive charging state when the electronic device is in the forward charging state to ensure the forward charging function of the electronic device. At the same time, the target link is controlled to be turned on so that the PD controller can provide power output. In this way, when there are more than two charging interfaces, the power output provided by the PD controller can be used to achieve reverse charging, thereby meeting the user's need to use the electronic device to reverse charge the external device.

[0011] In other design schemes of the present application, the controller is also used to: when it is determined that the electronic device meets the second preset condition, control the battery charging controller to switch to the positive charging state and control the target link to be connected; wherein the second preset condition includes one of the following situations: the electronic device is in the forward charging state; the second preset condition also includes that the electronic device is not in the forward charging state and any charging interface is not connected to a receiving device.

[0012] In this design, not only does the forward charging function of the electronic device be guaranteed by disabling the reverse output function of the battery charging controller while simultaneously enabling the external output function of the PD controller when the electronic device is in the forward charging state, but the forward charging function of the electronic device is also guaranteed when both the first interface and the second interface are in a non-connected state (i.e., the electronic device is not in the forward charging state) . In other words, when the electronic device is not charging (neither forward charging nor reverse charging), this design adjusts the electronic device to a state of readiness for providing the forward charging function by default. When forward charging is required, forward charging can be achieved without link switching, thereby facilitating user experience of the forward charging function, a commonly used function of the electronic device.

[0013] In some embodiments of the present application, the target link further includes other links in at least one second reverse charging link except the second reverse charging link corresponding to the charging interface connected to the receiving device.

[0014] It should be noted that when the electronic device meets the first preset condition, the first reverse charging link is used for reverse charging, and all the second reverse charging links are not used. Therefore, all the second reverse charging links except the second reverse charging link corresponding to the charging interface connected to the receiving device can be turned off at the same time. When the electronic device meets the second preset condition, the second reverse charging link is used for reverse charging, thereby controlling all the second reverse charging links to be turned on. Compared with the embodiment in which the target link only includes the second reverse charging link corresponding to the charging interface connected to the receiving device, in this embodiment, when the electronic device meets the first preset condition, all the second reverse charging links are controlled to be turned off, and when the second preset condition is met, all the second reverse charging links are controlled to be turned on. There is no need to identify the charging interface connected to the receiving device and control the corresponding second reverse charging link to be turned off or turned on. Obviously, this embodiment is conducive to reducing the control complexity.

[0015] Exemplarily, at least one charging interface includes a first interface and a second interface; at least one second reverse charging link includes a first sub-link and a second sub-link; and at least one power output terminal includes a first power output terminal and a second power output terminal. The first interface is connected to the first power output terminal via the first sub-link, and the second interface is connected to the second power output terminal via the second sub-link.

[0016] In some embodiments of the present application, when the first interface and / or the second interface is connected to an output device, the electronic device is in a forward charging state. When neither the first interface nor the second interface is connected to an output device, the electronic device is not in a forward charging state.

[0017] Specifically, the first interface and / or the second interface is connected to an output device, including one of the following situations:

[0018] The first interface is connected to the output device, and the second interface is connected to the output device;

[0019] The first interface is connected to an output device, and the second interface is connected to a receiving device;

[0020] The first interface is connected to the output device, and the second interface is in a disconnected state;

[0021] The first interface is connected to a receiving device, and the second interface is connected to an output device;

[0022] The first interface is in a disconnected state, and the second interface is connected to an output device.

[0023] Specifically, neither the first interface nor the second interface is connected to an output device, including one of the following situations:

[0024] The first interface is connected to the receiving device, and the second interface is in a disconnected state;

[0025] The first interface is connected to the receiving device, and the second interface is connected to the receiving device;

[0026] The first interface is in a disconnected state, and the second interface is connected to a receiving device;

[0027] The first interface is in a disconnected state, and the second interface is in a disconnected state.

[0028] In some embodiments of the present application, the first sub-link includes a first switch element. The second sub-link includes a second switch element. The first end of the first switch element is coupled to the first interface, and the second end of the first switch element is coupled to the first power output end. The first end of the second switch element is coupled to the second interface, and the second end of the second switch element is coupled to the second power output end. The third end of the first switch element and the third end of the second switch element are both coupled to a controller; the controller is configured to output a first control instruction and a second control instruction, the first control instruction being configured to instruct the first switch element to switch to a closed state or an open state, and the second control instruction being configured to instruct the second switch element to switch to a closed state or an open state; wherein, when the first switch element and the second switch element are switched to a closed state, the first sub-link and the second sub-link are turned off; and when the first switch element and the second switch element are switched to an open state, the first sub-link and the second sub-link are turned on.

[0029] In this embodiment, by respectively providing a first switching element and a second switching element on the first sub-link and the second sub-link, and controlling the on and off of the first switching element and the second switching element, the first sub-link and the second sub-link can be turned on and off, thereby enabling switching of the reverse charging link of the electronic device.

[0030] In some embodiments of the present application, the electronic device further includes a third switch element. A first end of the third switch element is coupled to the battery charging controller, a second end of the third switch element is coupled to a reference ground, and a third end of the third switch element is coupled to the controller. The controller is further configured to output a third control instruction. The third control instruction is configured to instruct the third switch element to switch between a closed state and an open state; when the third switch element is switched to the closed state, the battery charging controller switches to a reverse charging state; and when the third switch element is switched to the open state, the battery charging controller switches to a positive charging state.

[0031] This embodiment realizes the state switching of the battery charging controller by providing a third switch element and controlling the on and off of the third switch element, thereby realizing the switching of the reverse charging link of the electronic device.

[0032] In some embodiments of the present application, the connection information is also used to indicate the current and voltage parameters required by the external device when the external device is a receiving device. The controller is coupled to the battery charging controller and is further used to control the current and voltage when the battery charging controller switches to a reverse charging state for reverse charging based on the current and voltage parameters.

[0033] In some designs, the controller is further configured to: before reverse charging, determine whether the output power of the electronic device is greater than a preset threshold. When the output power of the electronic device is greater than the preset threshold, control the battery charging controller to switch to a reverse charging state for reverse charging.

[0034] In this embodiment, the electronic device provides power output only when its output power is greater than a preset threshold (ie, its own power is sufficient), which helps to ensure the normal operation of the electronic device itself.

[0035] Optionally, the electronic device is a personal computer (PC). The battery of the PC has a large capacity and is suitable for providing the reverse charging function. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A circuit diagram of a possible reverse charging solution for an electronic device;

[0037] Figure 2 for Figure 1 The flowchart of the electronic device shown is reverse charging;

[0038] Figure 3 Schematic diagram of the structure of the electronic device provided in some embodiments of the present application Figure 1 ;

[0039] Figure 4 Schematic diagram of the structure of the electronic device provided in some embodiments of the present application Figure 2 ;

[0040] Figure 5 A flowchart of a charging control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0041] In the embodiments of this application, words such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be interpreted as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplarily" or "for example" is intended to present the relevant concepts in a concrete manner.

[0042] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0043] It should be understood that the terms used in the description of the various examples herein are for the purpose of describing the particular examples only and are not intended to be limiting. As used in the description of the various examples, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0044] In this application, "at least one" means one or more, and "plurality" means two or more. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or plural.

[0045] It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the listed items. The term "and / or" describes an association between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this application generally indicates that the associated objects are in an "or" relationship.

[0046] It should also be understood that, in this application, the term "coupling" refers to an electrical connection that can transmit electrical signals and should be understood in a broad sense. For example, "coupling" can mean a direct connection or an indirect connection through an intermediate medium.

[0047] It will also be understood that the term “comprise” (also known as “includes,” “including,” “comprises,” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0048] It should be understood that references throughout this specification to "one embodiment," "another embodiment," or "a possible design" mean that specific features, structures, or characteristics associated with an embodiment or implementation are included in at least one embodiment of this application. Therefore, the appearance of "in one embodiment of this application," "in another embodiment of this application," or "a possible design" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0049] In order to better understand the solution of the present application, the technical terms involved in the embodiments of the present application are first explained.

[0050] With the development of portable terminal devices, the demand for their battery life has received unprecedented attention. Currently, most portable terminal devices support reverse charging. Using this function to charge a portable terminal device in need has become a popular charging solution. The following uses a personal computer (PC) as an example to illustrate reverse charging solutions for portable terminal devices.

[0051] Please refer to Figure 1 , Figure 1 This is a circuit diagram of a possible reverse charging scheme for an electronic device. The electronic device is a PC, including a power delivery (PD) controller, a current charging controller (also called a charger), a battery, and two Type-C interfaces, interface C1 and interface C2. Interface C1 and interface C2 are used to connect external devices to realize certain functions between the external device and the electronic device, such as forward charging function (charging the electronic device from the external device) or reverse charging function (charging the external device from the electronic device); the PD controller is used to communicate with the external device about the charging protocol; the battery charging controller is used to convert the voltage input by the external device through interface C1 or interface C2 into a suitable voltage, and give it to the devices and battery of the PC that need power, thereby realizing forward charging.

[0052] Among them, the PD controller has a power input terminal Vin, a first power output terminal Vout1, and a second power output terminal Vout2. The power input terminal Vin is used to receive the power supply voltage (such as 5V) input by the buck converter (BUCK) circuit to ensure the normal operation of the PD controller. At the same time, the power input terminal Vin is also connected to the first power output terminal Vout1 and the second power output terminal Vout2 through the switch K1 and the switch K2 located inside the PD controller. It should be understood that by controlling the switch K1 and the switch K2 to be closed, the power input terminal Vin can be connected to the first power output terminal Vout1 and the second power output terminal Vout2, so that the power supply voltage input by the power input terminal Vin is output to the first power output terminal Vout1 and the second power output terminal Vout2, so that the PD controller has the ability to supply power to the outside. Figure 1 In the electronic device shown, the first power output terminal Vout1 is connected to the interface C1, and the second power output terminal Vout2 is connected to the interface C2. In this way, the PD controller can provide voltage output to the interface C1 and the interface C2 respectively through the first power output terminal Vout1 and the second power output terminal Vout2 to achieve reverse charging function.

[0053] The following combination Figure 2 , taking interface C1 as an example, the process of performing reverse charging of an electronic device is described in detail.

[0054] Please refer to Figure 2 , Figure 2 for Figure 1 The flowchart of reverse charging of an electronic device shown includes the following steps:

[0055] S201: The electronic device recognizes access of an external device and performs CC handshake communication with the external device.

[0056] During the specific implementation process, when interface C1 is connected to an external device, interface C1 sends an interrupt to the PD controller. The PD controller recognizes the access of the external device based on the interrupt signal, and then performs handshake communication with the external device in the channel configuration (configuration channel, CC) channel to determine the type of the electronic device and the external device. Among them, if the type of the electronic device is an output device (also called a source device) and the external device is a receiving device (also called a sink device), it means that the electronic device is reversely charging the external device; if the electronic device is a sink device and the external device is an output device, it means that the external device is forwardly charging the electronic device. In this example, the electronic device is a source device and the external device is a sink device.

[0057] S202: If it is determined that the electronic device is an output device and the external device is a receiving device, the electronic device turns on the switch K1 and starts reverse charging the external device.

[0058] It should be noted that in the above reverse charging process, according to the PD protocol, the maximum current is 3A. Due to the influence of specification restrictions, the current output by the electronic device may be further limited. Figure 1 The electronic devices in the device can only provide a maximum of 15W (5V / 3A) charging power, which cannot meet the high-power fast charging needs expected by users. Figure 1 and Figure 2 Taking two interfaces as an example, the problem that electronic devices cannot meet the high-power fast charging requirements expected by users is explained. However, in other embodiments, electronic devices including more or fewer interfaces still have the above problems. The principles that cause the above problems are similar and will not be repeated here.

[0059] To solve the above technical problems, the present application provides an electronic device. For example, the electronic device may be a power bank, a mobile phone, a tablet computer, a desktop computer, a laptop computer, a handheld computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook computer, or other device that supports reverse charging. The embodiments of the present application do not impose any particular restrictions on the specific form of the device.

[0060] It should be noted that Figure 1 In the reverse charging scheme shown, the battery charging controller is used to convert the power of the external device to the battery, but some battery charging controllers also have a reverse output function, which allows the battery to power the input end of the battery charging controller, so that the output end of the battery charging controller can provide power output. Currently, only the forward output function of the battery charging controller is used, so there is only one path on the hardware and it cannot support the existence of two functions at the same time. Based on this, the embodiment of the present application is Figure 1 On this basis, when the electronic device is not in the forward charging state, the reverse output function of the battery charge controller is utilized to allow the battery to provide power output through the battery charge controller to achieve reverse charging function. Because the electronic device is reversely charged by a larger capacity battery, it can achieve greater power output, meeting the user's high-power fast charging needs.

[0061] The implementation of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0062] Please refer to Figure 3 , Figure 3 Schematic diagram of the structure of the electronic device provided in some embodiments of the present application Figure 1 .like Figure 3 As shown, the electronic device 300 may include a processor 310, an external memory interface 320, an internal memory 321, a universal serial bus (USB) interface 330, a charging management module 340, a power management module 341, a battery 342, an antenna 1, an antenna 2, a mobile communication module 350, a wireless communication module 360, an audio module 370, a speaker 370A, a receiver 370B, a microphone 370C, an earphone interface 370D, a sensor module 380, a button 390, a motor 391, an indicator 392, a camera 393, a display screen 394, and a subscriber identification module (SIM) card interface 396, etc.

[0063] It should be understood that the structure illustrated in this embodiment does not constitute a specific limitation on the electronic device 300. In other embodiments, the electronic device 300 may include more or fewer components than shown, or may combine or separate certain components, or arrange the components differently. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

[0064] The processor 310 may include one or more processing units. For example, the processor 310 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). The different processing units may be independent devices or integrated into one or more processors.

[0065] The controller can be the nerve center and command center of the electronic device 300. The controller can generate operation control signals according to instruction operation codes and timing signals to complete the control of instruction fetching and execution.

[0066] Processor 310 may also include a memory for storing instructions and data. In some embodiments, the memory in processor 310 is a cache memory. This memory can store instructions or data that have just been used or are being recycled by processor 310. If processor 310 needs to use the same instruction or data again, it can directly retrieve it from the memory. This avoids duplicate accesses, reduces processor 310 latency, and thus improves system efficiency.

[0067] In some embodiments, the processor 310 may include one or more interfaces. The interfaces may include an inter-integrated circuit (I2C) interface, an inter-integrated circuit sound (I2S) interface, a pulse code modulation (PCM) interface, a universal asynchronous receiver / transmitter (UART) interface, a mobile industry processor interface (MIPI), a general-purpose input / output (GPIO) interface, a subscriber identity module (SIM) interface, and / or a universal serial bus (USB) interface.

[0068] It should be noted that although Figure 3 Only one USB interface and the connection relationship of the USB interface are shown. However, it should be understood that in the embodiment of the present application, the electronic device 300 includes one or more USB interfaces 330. In a specific implementation, the USB interface 330 may be a Type-C interface, etc.

[0069] It is understood that the interface connection relationship between the modules illustrated in this embodiment is merely an illustrative illustration and does not limit the structure of the electronic device 300. In other embodiments, the electronic device 300 may also adopt different interface connection methods from the above embodiments, or a combination of multiple interface connection methods.

[0070] The charging management module 340 is configured to receive charging input from a charger. The charger can be either a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 340 can receive charging input from the wired charger via the USB interface 330. In some wireless charging embodiments, the charging management module 340 can receive wireless charging input via the wireless charging coil of the electronic device 300. While charging the battery 342, the charging management module 340 can also provide power to the electronic device via the power management module 341.

[0071] The PD module 343 is used to perform charging protocol communication with an external device coupled to the electronic device 300 via the USB interface 330 .

[0072] The power management module 341 is used to connect the battery 342, the charging management module 340, and the processor 310. The power management module 341 receives input from the battery 342 and / or the charging management module 340 and provides power to the processor 310, the internal memory 321, the external memory, the display 394, the camera 393, and the wireless communication module 360. The power management module 341 can also be used to monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage, impedance). In some other embodiments, the power management module 341 can also be set in the processor 310. In other embodiments, the power management module 341 and the charging management module 340 can also be set in the same device.

[0073] The wireless communication function of the electronic device 300 can be implemented through the antenna 1, the antenna 2, the mobile communication module 350, the wireless communication module 360, the modem processor and the baseband processor.

[0074] Antenna 1 and Antenna 2 are used to transmit and receive electromagnetic wave signals. Each antenna in electronic device 300 can be used to cover a single or multiple communication frequency bands. Different antennas can also be reused to improve antenna utilization. For example, antenna 1 can be reused as a diversity antenna for a wireless local area network. In other embodiments, the antennas can be used in conjunction with a tuning switch.

[0075] The mobile communication module 350 can provide solutions for wireless communications including 2G / 3G / 4G / 3G applied to the electronic device 300. The mobile communication module 350 may include at least one filter, a switch, a power amplifier, a low noise amplifier (LNA), etc. The mobile communication module 350 can receive electromagnetic waves from the antenna 1, and filter, amplify, and process the received electromagnetic waves, and transmit them to the modulation and demodulation processor for demodulation. The mobile communication module 350 can also amplify the signal modulated by the modulation and demodulation processor, and convert it into electromagnetic waves for radiation through the antenna 1. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the processor 310. In some embodiments, at least some of the functional modules of the mobile communication module 350 can be set in the same device as at least some of the modules of the processor 310.

[0076] The modem processor may include a modulator and a demodulator. The modulator is used to modulate the low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used to demodulate the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then transmits the demodulated low-frequency baseband signal to the baseband processor for processing. After being processed by the baseband processor, the low-frequency baseband signal is passed to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 370A, the receiver 370B, etc.) or displays an image or video through the display screen 394. In some embodiments, the modem processor may be an independent device. In other embodiments, the modem processor may be independent of the processor 310 and be provided in the same device as the mobile communication module 350 or other functional modules.

[0077] The wireless communication module 360 can provide wireless communication solutions including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared (IR), etc., which are applied to the electronic device 300. The wireless communication module 360 can be one or more devices integrating at least one communication processing module. The wireless communication module 360 receives electromagnetic waves via the antenna 2, frequency modulates and filters the electromagnetic wave signals, and sends the processed signals to the processor 310. The wireless communication module 360 can also receive the signal to be sent from the processor 310, frequency modulate it, amplify it, and convert it into electromagnetic waves for radiation through the antenna 2.

[0078] In some embodiments, antenna 1 of electronic device 300 is coupled to mobile communication module 350, and antenna 2 is coupled to wireless communication module 360, so that electronic device 300 can communicate with a network and other devices via wireless communication technology. Wireless communication technology may include global system for mobile communications (GSM), general packet radio service (GPRS), code division multiple access (CDMA), wideband code division multiple access (WCDMA), time-division code division multiple access (TD-SCDMA), long term evolution (LTE), BT, GNSS, WLAN, NFC, FM, and / or IR technology. GNSS may include the global positioning system (GPS), the global navigation satellite system (GLONASS), the Beidou navigation satellite system (BDS), the quasi-zenith satellite system (QZSS) and / or the satellite based augmentation system (SBAS).

[0079] Electronic device 300 implements display functionality through a GPU, display screen 394, and an application processor. A GPU is a microprocessor for image processing that connects display screen 394 and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. Processor 310 may include one or more GPUs that execute program instructions to generate or modify display information.

[0080] The display screen 394 is used to display images, videos, etc. The display screen 394 is sometimes also referred to as a display module, and generally includes a display panel and a driving circuit for driving the display panel for display. Among them, the display panel can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light emitting diode or an active-matrix organic light emitting diode (AMOLED), a flexible light-emitting diode (FLED), MiniLED, MicroLed, Micro-oLed, quantum dot light emitting diodes (QLED), etc. The driving module includes a display driver integrated circuit (DDIC) and an array of TFT devices.

[0081] The electronic device 300 can realize the shooting function through the ISP, camera 393, video codec, GPU, display screen 394 and application processor.

[0082] The ISP processes data fed back by camera 393. For example, when taking a photo, the shutter is opened, and light is transmitted through the lens to the camera's photosensitive element. The light signal is converted into an electrical signal, which is then passed to the ISP for processing and transformed into a visible image. The ISP can also perform algorithmic optimization on image noise, brightness, and skin tone. The ISP can also optimize parameters such as exposure and color temperature of the captured scene. In some embodiments, the ISP can be located within camera 393.

[0083] The camera 393 is used to capture still images or videos. The object generates an optical image through the lens and projects it onto the photosensitive element. The photosensitive element can be a charge coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The photosensitive element converts the light signal into an electrical signal, and then passes the electrical signal to the ISP to be converted into a digital image signal. The ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into an image signal in a standard RGB, YUV or other format. In some embodiments, the electronic device 300 may include 1 or N cameras 393, where N is a positive integer greater than 1.

[0084] The digital signal processor is used to process digital signals. In addition to processing digital image signals, it can also process other digital signals. For example, when the electronic device 300 selects a frequency point, the digital signal processor is used to perform Fourier transform on the frequency point energy.

[0085] Video codecs are used to compress or decompress digital video. Electronic device 300 may support one or more video codecs. This allows electronic device 300 to play or record videos in various encoding formats, such as Moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, and MPEG4.

[0086] The NPU is a neural network (NN) computing processor. Drawing on the structure of biological neural networks, such as the transmission patterns between neurons in the human brain, it rapidly processes input information and can continuously self-learn. The NPU enables intelligent cognitive applications in electronic device 300, such as image recognition, face recognition, speech recognition, and text comprehension.

[0087] The external memory interface 320 can be used to connect an external memory card, such as a Micro SD card, to expand the storage capacity of the electronic device 300. The external memory card communicates with the processor 310 via the external memory interface 320 to implement data storage functions. For example, files such as music and videos can be stored on the external memory card.

[0088] The internal memory 321 can be used to store computer executable program code, and the executable program code includes instructions. The processor 310 executes various functional applications and data processing of the electronic device 300 by running the instructions stored in the internal memory 321. For example, in an embodiment of the present application, the processor 310 can detect the folding angle (i.e., the angle between adjacent screens) of the display screen 394 (i.e., the folding screen) by executing the instructions stored in the internal memory 321, and display the display content (i.e., the image) corresponding to the angle in response to the change in the angle. The internal memory 321 may include a program storage area and a data storage area. Among them, the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc. The data storage area may store data created during the use of the electronic device 300 (such as audio data, a phone book, etc.), etc. In addition, the internal memory 321 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0089] The electronic device 300 can implement audio functions such as music playback and recording through the audio module 370, the speaker 370A, the receiver 370B, the microphone 370C, the headphone jack 370D, and the application processor.

[0090] The audio module 370 is used to convert digital audio information into analog audio signals for output, and also to convert analog audio input into digital audio signals. The audio module 370 can also be used to encode and decode audio signals. In some embodiments, the audio module 370 can be located within the processor 310, or some of its functional modules can be located within the processor 310. The speaker 370A, also known as the "speaker," is used to convert electrical audio signals into sound signals. The electronic device 300 can listen to music or make hands-free calls through the speaker 370A. The receiver 370B, also known as the "earpiece," is used to convert electrical audio signals into sound signals. When the electronic device 300 receives a call or voice message, the user can hold the receiver 370B close to their ear to receive the voice. The microphone 370C, also known as the "microphone," is used to convert sound signals into electrical signals. When making a call, sending a voice message, or triggering a function on the electronic device 300 using a voice assistant, the user can speak near the microphone 370C to input the sound signal. The electronic device 300 may be provided with at least one microphone 370C. In other embodiments, the electronic device 300 may be provided with two microphones 370C, which, in addition to collecting sound signals, may also implement noise reduction. In other embodiments, the electronic device 300 may be provided with three, four, or more microphones 370C, which may also collect sound signals, reduce noise, identify sound sources, implement directional recording, and so on.

[0091] The headphone jack 370D is used to connect a wired headphone. The headphone jack 370D can be a USB interface 330 or a 3.3mm open mobile terminal platform (OMTP) standard interface or a cellular telecommunications industry association of the USA (CTIA) standard interface.

[0092] The buttons 390 include a power button, a volume button, and the like. The buttons 390 may be mechanical buttons or touch buttons. The electronic device 300 may receive key inputs and generate key signal inputs related to user settings and function control of the electronic device 300.

[0093] Motor 391 can generate vibration prompts. Motor 391 can be used for incoming call vibration prompts, and can also be used for touch vibration feedback. For example, touch operations acting on different applications (such as taking pictures, audio playback, etc.) can correspond to different vibration feedback effects. For touch operations acting on different areas of the display screen 394, motor 391 can also correspond to different vibration feedback effects. Different application scenarios (for example: time reminders, receiving messages, alarm clocks, games, etc.) can also correspond to different vibration feedback effects. The touch vibration feedback effect can also support customization.

[0094] Indicator 392 can be an indicator light, which can be used to indicate charging status, power changes, messages, missed calls, notifications, etc.

[0095] The SIM card interface 396 is used to connect a SIM card. The SIM card can be connected to and disconnected from the electronic device 300 by inserting it into or removing it from the SIM card interface 396. The electronic device 300 can support 1 or N SIM card interfaces, where N is a positive integer greater than 1. The SIM card interface 396 can support Nano SIM cards, Micro SIM cards, SIM cards, and the like. Multiple cards can be inserted into the same SIM card interface 396 at the same time. The types of the multiple cards can be the same or different. The SIM card interface 396 can also be compatible with different types of SIM cards. The SIM card interface 396 can also be compatible with external memory cards. The electronic device 300 interacts with the network through the SIM card to implement functions such as calls and data communications. In some embodiments, the electronic device 300 uses an eSIM, i.e., an embedded SIM card. The eSIM card can be embedded in the electronic device 300 and cannot be separated from the electronic device 300.

[0096] Please refer to Figure 4 , Figure 4 Schematic diagram of the structure of the electronic device provided in some embodiments of the present application Figure 2 (like Figure 3 The electronic device 300 shown in FIG. 3 includes a battery, two charging interfaces (a first interface and a second interface), a PD controller (such as Figure 3 PD module 343 shown in the figure), battery charging controller, a first reverse charging link (all paths of the first reverse charging link marked in the figure constitute the first reverse charging link), two second reverse charging links are respectively a first sub-link (all paths of the first sub-link marked in the figure constitute the first sub-link) and a second sub-link (all paths of the second sub-link marked in the figure constitute the second sub-link), and a controller (such as Figure 3 It should be understood that the battery can be understood as a controller in the processor 310 shown. Figure 3 The battery 342 shown, the PD controller can be understood as Figure 3The PD module 343 shown, the controller can be understood as Figure 3 The controller in the processor 310 is shown.

[0097] The battery is used to receive power input or provide power output.

[0098] The first interface and the second interface are both used to connect the electronic device to an external device, such as a charger for charging the electronic device, a mobile phone that needs to be charged, etc. In a specific implementation, the first interface and the second interface may be Type-C interfaces. It should be understood that in this embodiment, the first interface and the second interface can be in the following three states: neither is connected to an external device, one is connected to an external device and the other is connected to an external device, and both are connected to an external device.

[0099] The PD controller is coupled to the first interface and the second interface respectively ( Figure 4 In the figure, the serial transmission bus (inter-integrated circuit, I2C) between the first interface and the PD controller, and the I2C between the second interface and the PD controller show the coupling relationship), the PD controller is used to obtain the connection information of the first interface and the connection information of the second interface. The connection information is used to indicate the connection status of the charging interface, and the connection status includes a connected state or a non-connected state. Among them, the connected state means that the charging interface (such as the first interface or the second interface) is connected to an external device, and the non-connected state means that the charging interface is not connected to an external device. In addition, the connection information is also used to indicate the device type of the external device when the charging interface is connected to an external device (that is, in a connected state), and the device type includes a source device or a sink device. The source device is a device that provides power output, and the sink device is a device that receives power input. The following describes the process of the PD controller obtaining connection information by taking the first interface connected and not connected to the external device as an example, as follows:

[0100] When the external device disconnects from the first interface in response to the user's unplugging operation, the first interface sends a first interrupt signal to the PD signal. After receiving the first interrupt signal, the PD controller determines that the first interface is in a non-connected state based on the first interrupt signal; when the external device connects to the first interface in response to the user's access operation, the first interface sends a second interrupt signal to the PD signal. After receiving the second interrupt signal, the PD controller determines that the first interface is in a connected state based on the second interrupt signal. It should be noted that the PD controller has the function of performing charging protocol communication with the external device connected to the first interface. Based on this, when it is determined that the first interface is in a connected state, the PD controller will establish a CC handshake communication with the external device to determine the device type of the external device. It should be understood that the external device and the electronic device are each other's source device and sink device, that is, one of the external device and the electronic device is a source device, and the other of the external device and the electronic device is a sink device.

[0101] In this embodiment, the connection information only indicates the device type of the external device. It should be understood that in other embodiments, the connection information may also indicate the device type of the electronic device, or indicate the device types of both the electronic device and the external device. Since the external device and the electronic device are mutually source devices and sink devices, after determining the device type of one device, the device type of the other device can be obtained. The embodiment of the present application does not specifically limit the object of the device type indicated by the connection information.

[0102] In addition, the PD controller has two power output terminals, namely a first power output terminal Vout1 and a second power output terminal Vout2. The first power output terminal Vout1 and the second power output terminal Vout2 are used to provide power output, for example, 5V / 3A output.

[0103] The first interface is coupled to the first power output terminal Vout1 of the PD controller via the first sub-link, and the second interface is coupled to the second power output terminal Vout2 of the PD controller via the second sub-link. That is, one charging interface is connected to one power output terminal via a second reverse charging link. Based on this, the electronic device can use the first power output terminal Vout1 of the PD controller to reverse charge the external device connected to the first interface via the first sub-link; it can also use the second power output terminal Vout2 of the PD controller to reverse charge the external device connected to the second interface via the second sub-link. It should be understood that the first sub-link and the second sub-link can be understood as Figure 3 The link from USB interface 330 to PD module 343 is shown.

[0104] In a specific implementation, the first sub-link includes a first switch element Q1, and the second sub-link includes a second switch element Q2. The first end of the first switch element Q1 is coupled to the first interface, and the second end of the first switch element Q1 is coupled to the first power output terminal Vout1. The first end of the second switch element Q2 is coupled to the second interface, and the second end of the second switch element Q2 is coupled to the second power output terminal Vout2.

[0105] For example, the first switching element Q1 and the second switching element Q2 may be N-type transistors. In this case, the first terminals of the first switching element Q1 and the second switching element Q2 may be the source terminals of the transistors, and the second terminals of the first switching element Q1 and the second switching element Q2 may be the drain terminals of the transistors. In other embodiments, the first switching element Q1 and the second switching element Q2 may be switch chips. In the embodiments of the present application, when the switching element is a transistor, the first terminal of the switching element refers to the source terminal of the transistor, the second terminal of the switching element refers to the drain terminal of the transistor, and the third terminal of the switching element refers to the gate terminal of the transistor, which will not be further described.

[0106] In this embodiment, by respectively providing a first switching element Q1 and a second switching element Q2 on the first sub-link and the second sub-link, and controlling the on and off of the first switching element Q1 and the second switching element Q2, the first sub-link and the second sub-link can be turned on and off, thereby realizing the switching of the reverse charging link of the electronic device.

[0107] In addition, the first and second interfaces are further coupled to the battery via a first reverse charging link. The first reverse charging link is coupled to the battery charging controller. It is noteworthy that in this embodiment, the battery charging controller includes a positive charging state (i.e., the forward output function described above) and a reverse charging state (i.e., the reverse output function described above). The fifth terminal D5 of the battery charging controller is used to receive external control instructions. In response to the external control instructions, the battery charging controller can switch to either the positive charging state or the reverse charging state. When the battery charging controller operates in the reverse charging state, it can control the first reverse charging link to perform reverse charging. In this case, the electronic device can use the battery to reversely charge the external device connected to the first and second interfaces via the first reverse charging link. When the battery charging controller operates in the positive charging state, it can control the first reverse charging link to perform forward charging. In this case, the electronic device can use the power input provided by the external device via the first and second interfaces to forward charge the battery via the first reverse charging link. Simultaneously, in some embodiments, it can also provide power to other operating components of the electronic device.

[0108] In a specific implementation, the battery charging controller may be of the model BQ25713, which can operate in both positive charging and negative charging states.

[0109] It should be understood that the first reverse charging link can be understood as Figure 3 The link from the USB interface 330 to the battery 342 shown, the battery charging controller can be understood as Figure 3 The charging management module 340 is shown.

[0110] The controller can be an embedded controller (EC). The first terminal P1 (such as GPIO1) of the controller is coupled to the fifth terminal D5 of the battery charging controller, the second terminal P2 (such as GPIO1) of the controller is coupled to the first sub-link, the third terminal P3 (such as GPIO1) of the controller is coupled to the second sub-link, and the fourth terminal P4 of the controller is coupled to the PD controller (the I2C between the PD controller and the controller in the figure illustrates this coupling relationship). The controller is used to obtain the connection information of the first interface and the connection information of the second interface through the fourth terminal P4 of the controller, and is also used to control the battery charging controller to switch to the reverse charging state for reverse charging through the first terminal P1 of the controller when it is determined that the electronic device meets the first preset condition based on the connection information of the first interface and the connection information of the second interface, and to control the target link to be shut down through the second terminal P2 and the third terminal P3 of the controller.

[0111] Among them, the first preset condition includes that the electronic device is in a non-forward charging state, and the first interface and / or the second interface is connected to a sink device. In addition, the target link includes a second reverse charging link corresponding to the charging interface of the first interface and the second interface that is connected to the sink device. That is, if only the first interface is connected to the sink device, the target link includes the first sub-link; if only the second interface is connected to the sink device, the target link includes the second sub-link; if both the first interface and the second interface are connected to the sink device, the target link includes the first sub-link and the second sub-link.

[0112] During a specific implementation, the second terminal P2 of the controller is coupled to the third terminal of the first switch element Q1, and the third terminal P3 of the controller is coupled to the third terminal of the second switch element Q2. The controller is configured to output a first control instruction via the second terminal P2 and a second control instruction via the third terminal P3. The first control instruction and the second control instruction are configured to instruct the first switch element Q1 and the second switch element Q2 to switch to a closed state or an open state, respectively. When the first switch element Q1 and the second switch element Q2 are switched to a closed state, the first sub-link and the second sub-link are disconnected; when the first switch element Q1 and the second switch element Q2 are switched to an open state, the first sub-link and the second sub-link are connected.

[0113] Continuing with the above example, the third terminals of the first switching element Q1 and the second switching element Q2 may be gates of N-type transistors.

[0114] During a specific implementation, the electronic device further includes a third switching element Q3. A first terminal P1 of the controller is coupled to a third terminal of the third switching element Q3. A second terminal of the third switching element Q3 is coupled to a fifth terminal D5 of the battery charging controller. A first terminal of the third switching element Q3 is coupled to a reference ground. The controller is configured to output a third control instruction via the first terminal P1 of the controller. The third control instruction is configured to instruct the third switching element Q3 to switch to a closed state or an open state, thereby causing the third switching element Q3 to output the aforementioned external control instruction. When the third switching element Q3 switches to a closed state, the third switching element Q3 issues a first external control instruction instructing the battery charging controller to switch to a reverse charging state. When the third switching element Q3 switches to an open state, the third switching element Q3 issues a second external control instruction instructing the battery charging controller to switch to a positive charging state. The specific implementation of the third switching element Q3 can refer to the specific implementation of the first switching element Q1 and will not be further described here.

[0115] This embodiment provides a third switch element Q3 and controls the on / off state of the third switch element Q3 to switch the state of the battery charging controller, thereby switching the reverse charging link of the electronic device. It should be noted that since the state control terminal of the battery charging controller is in a high-impedance state, the first terminal of the third switch element Q3 also needs to be connected to a pull-up resistor R.

[0116] It should be noted that when an electronic device is in a forward charging state, it means that the electronic device receives power input provided by an external device, thereby charging the battery; when an electronic device is not in a forward charging state, it means that the electronic device does not receive power input provided by an external device, thereby charging the battery.

[0117] It should be understood that the electronic device can be placed in a forward charging state when either the first interface or the second interface of the electronic device is connected to an external device and receives power input from the external device, or when both interfaces are connected to external devices and simultaneously receive power input from the external devices connected to the two interfaces. In addition, when neither the first interface or the second interface receives power input from the external device, the electronic device may not be in a forward charging state.

[0118] According to the above content, if the device type of the external device connected to the charging interface of the electronic device is a source device, the electronic device receives the power input provided by the external device connected to the charging interface; conversely, if the charging interface of the electronic device is not connected to a source device, the electronic device does not receive the power input from the external device. Based on this, when the first interface and / or the second interface is connected to a source device (that is, one of the two charging interfaces or both are connected to a source device), it indicates that the electronic device is in a forward charging state; when neither the first interface nor the second interface is connected to a source device, it indicates that the electronic device is not in a forward charging state.

[0119] Exemplarily, the first interface and / or the second interface is connected to a source device, including one of the following situations:

[0120] The first interface is connected to the source device, and the second interface is connected to the source device;

[0121] The first interface is connected to the source device, and the second interface is connected to the sink device;

[0122] The first interface is connected to the source device, and the second interface is in a disconnected state;

[0123] The first interface is connected to the sink device, and the second interface is connected to the source device;

[0124] The first interface is in a disconnected state, and the second interface is connected to a source device.

[0125] Illustratively, neither the first interface nor the second interface is connected to a source device, including one of the following situations:

[0126] The first interface is connected to the sink device, and the second interface is in a disconnected state;

[0127] The first interface is connected to a sink device, and the second interface is connected to a sink device;

[0128] The first interface is in a disconnected state, and the second interface is connected to a sink device;

[0129] The first interface is in a disconnected state, and the second interface is in a disconnected state.

[0130] Obviously, in the above-mentioned first preset condition, the electronic device is not in a forward charging state, and the first interface and / or the second interface is connected to a sink device, including one of the following situations:

[0131] The first interface is connected to the sink device, and the second interface is in a disconnected state;

[0132] The first interface is in a disconnected state, and the second interface is connected to a sink device;

[0133] The first interface is connected to a source device, and the second interface is connected to a sink device.

[0134] Based on this, during a specific implementation, the controller can determine whether the first interface and the second interface meet one of the three output conditions described above based on the connection information of the first interface and the connection information of the second interface. If so, it is determined that the first preset condition is met; if not, it is determined that the first preset condition is not met. In the above three conditions, all are device types of external devices connected to the charging interface. Therefore, if the device type indicated by the connection information is the device type of an electronic device, another device type different from the device type indicated by the connection information can be determined as the device type of the external device connected to the charging interface.

[0135] Figure 4 In the electronic device shown, when the electronic device is not in the forward charging state, the reverse output function of the battery charge controller is utilized to enable the battery to provide power output to the sink device connected to the charging interface through the battery charge controller, thereby achieving reverse charging. Because the electronic device achieves reverse charging with a larger capacity battery, it can achieve greater power output, meeting the user's high-power fast charging needs.

[0136] In addition, the industry's common reverse charging solution is Figure 1 On the basis of the PD controller and the BUCK circuit, a PD controller and a BUCK circuit are added to provide high-power fast charging to external devices. Adding the PD controller and the BUCK circuit is equivalent to a small charging system. In this case, the software configuration will be more complicated, the debugging will be more difficult, and the R&D investment cost will be much higher. Compared with this solution, Figure 4 The illustrated embodiment implements external fast charging on the current architecture with only a few switches and some logic control, saving device costs, reducing hardware circuit design complexity, saving PCB design space, and reducing the difficulty of PCB and structural design. It also offers significant advantages in software configuration, debugging difficulty, and R&D investment costs. Furthermore, the addition of more devices means an increased risk of product failure, so this embodiment also reduces the overall product failure rate.

[0137] Please continue to refer to Figure 4 In some embodiments of the present application, the controller is also used to: when it is determined that the electronic device meets the second preset condition, control the battery charging controller to switch to the positive charging state and control the target link to be turned on; wherein the second preset condition includes that the electronic device is in the positive charging state.

[0138] It should be noted that, in the above-mentioned second preset condition, the five situations in which the electronic device is in the forward charging state have been explained in the previous article and will not be repeated here. It can be seen from the above content that the battery charging controller has a forward output function and a reverse output function. Since only the forward output function of the battery charging controller is currently used, there is only one path in the hardware design, and it is therefore impossible to support the simultaneous existence of two functions. Based on this, in order to give priority to ensuring the normal operation of the electronic device itself, this embodiment controls the battery charging controller to switch to the positive charging state when the electronic device is in the forward charging state to ensure the forward charging function of the electronic device. At the same time, the target link is controlled to be turned on, so that the PD controller provides power output and realizes reverse charging, thereby meeting the user's needs of using the electronic device to reversely charge the external device.

[0139] Of course, in other embodiments of the present application, the second preset condition may also include one of the following conditions:

[0140] The electronic device is in a positive charging state;

[0141] The electronic device is not in a forward charging state, and neither charging interface is connected to a sink device, that is, neither the first interface nor the second interface is connected to a sink device.

[0142] It should be noted that in the above-mentioned second preset condition, the electronic device is not in the forward charging state and neither charging port is connected to a sink device refers to the fourth of the four situations in which the electronic device is not in the forward charging state: the first port is in the disconnected state and the second port is also in the disconnected state. The four situations in which the electronic device is not in the forward charging state have been explained in the previous article and will not be repeated here.

[0143] As can be seen, unlike the previous embodiment, this embodiment not only ensures the forward charging function of the electronic device by disabling the reverse output function of the battery charge controller and simultaneously enabling the external output function of the PD controller when the electronic device is in the forward charging state, but also ensures the forward charging function of the electronic device in a non-forward charging state (i.e., not in the forward charging state) where both the first interface and the second interface are in a disconnected state. In other words, when not charging (neither forward charging nor reverse charging), this embodiment adjusts the electronic device to a standby state that provides the forward charging function by default. When forward charging is required, forward charging can be achieved without link switching, thereby facilitating the user experience of the forward charging function, a common function of the electronic device. As can be seen, in this embodiment, the second preset condition and the first preset condition complement each other and cover all states of the first interface and the second interface of the electronic device. Therefore, when the electronic device does not meet the first preset condition, the second preset condition is met; when the electronic device does not meet the second preset condition, the first preset condition is met.

[0144] Of course, in other embodiments, the situation where both the first interface and the second interface are in a non-connected state may also be regarded as the above-mentioned first preset condition, and the embodiment of the present application does not specifically limit this.

[0145] Please continue to refer to Figure 4 In some embodiments of the present application, the target link also includes other links in the two second reverse charging links, except for the second reverse charging link corresponding to the charging interface connected to the sink device. That is, when the controller determines that the electronic device meets the first preset condition, it controls all the second reverse charging links to be shut down; when the controller determines that the electronic device meets the second preset condition, it controls all the second reverse charging links to be turned on.

[0146] It should be noted that when the electronic device meets the first preset condition, reverse charging is performed by the first reverse charging link, and both second reverse charging links are not used. Therefore, the other second reverse charging link except the second reverse charging link corresponding to the charging interface connected to the sink device can be shut down at the same time.

[0147] When the electronic device meets the second preset condition, the second reverse charging link performs reverse charging. Taking the first interface connected to the source device for forward charging and the second interface connected to the sink device for reverse charging as an example, since the PD controller detects that the first interface is connected to the source device, it will control the internal switch to disconnect to cut off the path for providing power output to the first interface through the first sub-link. Based on this, when the electronic device meets the second preset condition, even if the two second reverse charging links are controlled to be turned on at the same time, the PD controller cannot provide power output to the first interface through the first sub-link, thereby avoiding affecting the forward charging process of the first interface. Compared with the embodiment in which the target link only includes the second reverse charging link corresponding to the charging interface connected to the sink device, in this embodiment, when the electronic device meets the first preset condition, all the second reverse charging links are controlled to be turned off, and when the second preset condition is met, all the second reverse charging links are controlled to be turned on. There is no need to identify the charging interface connected to the sink device and control the corresponding second reverse charging link to be turned off or turned on. Obviously, this embodiment is conducive to reducing the control complexity.

[0148] Please continue to refer to Figure 4 In some embodiments of the present application, the connection information is also used to indicate the current and voltage parameters required by the external device when the external device is a sink device. The fifth terminal P5 of the controller is also coupled to the sixth terminal D6 of the battery charging controller (the I2C between the controller and the battery charging controller in the figure illustrates this coupling relationship). The controller is also used to control the current and voltage of the battery charging controller during reverse charging based on the current and voltage parameters.

[0149] Specifically, during CC communication during reverse charging, the external device will inform the electronic device of its required current and voltage parameters. The PD controller will receive these current and voltage parameters via I2C between the first interface and the second interface and report them to the controller. Based on these current and voltage parameters, the controller can configure the registers of the battery charging controller to control the current and voltage during reverse charging.

[0150] It should be noted that, in the specific implementation process, the current and voltage when the electronic device uses the battery charging controller to perform high-power reverse charging are not set in one step, but are a process of gradual increase. For example, when the electronic device starts reverse charging, the electronic device will first configure the battery charging controller to reversely output a voltage of 5V, as well as the current parameters initially notified by the external device, usually a maximum of 3A. After that, the external device continues to inform the required voltage parameters and current parameters during CC communication with the PD controller. After receiving its voltage parameters and current parameters, the PD controller will report them to the controller, and the controller will reconfigure the current and voltage parts in the register of the battery charging controller to achieve high-power reverse charging function.

[0151] Please continue to refer to Figure 4 In some embodiments of the present application, the controller is also used to: before reverse charging, determine whether the output power of the electronic device is greater than a preset threshold; when the output power of the electronic device is greater than the preset threshold, control the battery charging controller to switch to the reverse charging state for reverse charging.

[0152] During specific implementations, before reverse charging begins, the controller can obtain the maximum power output (i.e., output power) that the electronic device can provide by reading the current and voltage components of the battery charge controller's registers. In this embodiment, power output is only provided when the electronic device's output power exceeds a preset threshold (i.e., the device's battery level is sufficient), which helps ensure the normal operation of the electronic device. During specific implementations, the preset threshold can be adjusted based on actual needs.

[0153] Please continue to refer to Figure 4In some embodiments of the present application, a fourth switch element Q4 and a fifth switch element Q5 are provided on the link between node X1 and the first interface of the first reverse charging link, and a sixth switch element Q6 and a seventh switch element Q7 are provided on the link between node X1 and the second interface of the first reverse charging link. A first end of the fourth switch element Q4 is coupled to the first interface, a second end of the fourth switch element Q4 is coupled to the second end of the fifth switch element Q5, a first end of the fifth switch element Q5 is coupled to the battery charging controller, and a third end of the fourth switch element Q4 and a third end of the fifth switch element Q5 are coupled to the PD controller. A first end of the sixth switch element Q6 is coupled to the first interface, a second end of the sixth switch element Q6 is coupled to the second end of the seventh switch element Q7, a first end of the seventh switch element Q7 is coupled to the battery charging controller, and a third end of the sixth switch element Q6 and a third end of the seventh switch element Q7 are coupled to the PD controller.

[0154] The PD controller is coupled to the fourth switch element Q4, the fifth switch element Q5, the sixth switch element Q6, and the seventh switch element Q7, respectively, and is configured to control the fourth switch element Q4, the fifth switch element Q5, the sixth switch element Q6, and the seventh switch element Q7 to close after the CC handshake is successful, thereby enabling the first reverse charging link to be turned on. The specific implementation of the fourth switch element Q4, the fifth switch element Q5, the sixth switch element Q6, and the seventh switch element Q7 can refer to the specific implementation of the first switch element Q1 and will not be repeated here.

[0155] In this embodiment, two switching devices are provided on both the first reverse charging link between node X1 and the first interface, and the first reverse charging link between node X1 and the second interface to prevent leakage. In other embodiments, a single switching element may be provided, and this embodiment of the present application is not specifically limited thereto.

[0156] In some embodiments of the present application, the electronic device further includes an eighth switching element Q8. A first terminal of the eighth switching element Q8 is coupled to the seventh terminal D7 of the battery charging controller, and a second terminal of the eighth switching element Q8 is coupled to the battery; that is, the second terminal D2 of the battery charging controller is coupled to the battery via the eighth switching element Q8. Furthermore, a third terminal of the eighth switching element Q8 is coupled to the fifth terminal of the battery charging controller. The battery charging controller is configured to control the on / off switching of the eighth switching element Q8 via the fifth terminal D5 of the battery charging controller to control power output or power input to the battery. The eighth switching element Q8 can be a P-type transistor or a switch chip.

[0157] In some embodiments of the present application, the first reverse charging link includes a ninth switching element Q9, a tenth switching element Q10, an eleventh switching element Q11, and a twelfth switching element Q12. The second end of the ninth switching element Q9 is coupled to the first interface and the second interface, respectively. The first end of the ninth switching element Q9 is coupled to the second end of the tenth switching element Q10. The first end of the tenth switching element Q10 is coupled to ground. The second end of the eleventh switching element Q11 is coupled to the battery. The first end of the eleventh switching element Q11 is coupled to the second end of the twelfth switching element Q12. The first end of the twelfth switching element Q12 is coupled to ground. Furthermore, the first end of the ninth switching element Q9 and the second end of the tenth switching element Q10 are coupled to the first end of the eleventh switching element Q11 and the second end of the twelfth switching element Q12 via an inductor L, forming a path for the first reverse charging link.

[0158] The third terminal of the ninth switch element Q9 is coupled to the first terminal D1 of the battery charging controller, the third terminal of the tenth switch element Q10 is coupled to the second terminal D2 of the battery charging controller, the third terminal of the eleventh switch element Q11 is coupled to the third terminal D3 of the battery charging controller, and the third terminal of the twelfth switch element Q12 is coupled to the fourth terminal D4 of the battery charging controller. The first terminal D1 of the battery charging controller can output a first driving instruction to the ninth switch element Q9, and the second terminal D2 of the battery charging controller can output a second driving instruction to the tenth switch element Q10. The first driving instruction and the second driving instruction are used to drive the ninth switch element Q9 and the tenth switch element Q10 to alternately close and open at a high speed, thereby controlling the first reverse charging link to perform forward charging. Furthermore, the third terminal D3 of the battery charging controller can output a third driving instruction to the eleventh switch element Q11, and the second terminal D2 of the battery charging controller can output a fourth driving instruction to the twelfth switch element Q12. The third driving instruction and the fourth driving instruction are used to drive the eleventh switch element Q11 and the twelfth switch element Q12 to alternately close and open at a high speed, thereby controlling the first reverse charging link to perform reverse charging.

[0159] Of course, in other embodiments, the ninth switch element Q9 and the tenth switch element Q10 may also be used to achieve voltage boost, while the eleventh switch element Q11 and the twelfth switch element Q12 may be used to achieve voltage reduction. This embodiment of the present application does not specifically limit this.

[0160] During a specific implementation, the first driving instruction and the second driving instruction are pulse width modulation (PWM) signals respectively.

[0161] Please refer to Figure 5 , Figure 5 This is a flow chart of a charging control method provided in an embodiment of the present application. Figure 4 Based on the electronic device shown in FIG, the first interface is connected to the external device at time t1, and the second interface is connected to the external device at time t2. In addition, it should be noted that Figure 5 In the embodiment shown, the first preset condition and the second preset condition are either one or the other. The charging control method includes:

[0162] S501: The controller controls the first sub-link and the second sub-link to be turned on, and controls the battery charging controller to switch to a positive charging state.

[0163] After the electronic device is powered on, by default, the reverse output function of the battery charging controller is turned off, and the reverse charging path from the PD controller to the first interface and the second interface is turned on to ensure the user experience of the commonly used forward charging function.

[0164] During the specific implementation process, the controller can achieve the above purpose by raising P1, P2, and P3.

[0165] S502: The controller detects that an external device is connected to the first interface at time t1, and determines whether the electronic device meets a first preset condition based on connection information of the first interface and connection information of the second interface.

[0166] If yes, execute S503; if no, execute S501.

[0167] The above content has described in detail how to detect and how to determine whether the electronic device meets the first preset condition based on the connection information, which will not be repeated here.

[0168] S503: The controller controls the first sub-link and the second sub-link to be turned off, and controls the battery charging controller to switch to a reverse charging state.

[0169] During specific implementation, the controller can achieve the above purpose by lowering P1, P2, and P3.

[0170] S504: The controller controls the current and voltage of the battery charging controller during reverse charging based on the connection information of the first interface.

[0171] The above content has already detailed how to control the current and voltage of the battery charging controller to achieve the purpose of high-power charging, so it will not be repeated here.

[0172] S505: The controller detects that an external device is connected to the second interface at time t2, and determines whether the electronic device meets a first preset condition based on the connection information of the first interface and the connection information of the second interface.

[0173] If yes, continue to execute S503; if no, continue to execute S501.

[0174] It should be noted that although Figure 4 and Figure 5 Take the example of an electronic device including two charging interfaces for illustration. In other embodiments, the electronic device may include more or fewer charging interfaces, and the specific implementation is similar to that of two charging interfaces. The difference is that the number of the second reverse charging link, the power output terminal of the PD controller, and the number of branches from the node X1 to the charging interface on the first reverse charging link are consistent with the charging interface, and one charging interface is connected to the power output terminal of a PD controller through a second reverse charging link, and is also coupled to the battery through a branch from the charging interface to the node X1 on the first reverse charging link. The embodiments of this application will not be described in detail.

[0175] The above is only a specific embodiment of the present application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An electronic device, characterized in that: include: Battery; at least one charging port, the charging port being used to connect to an external device; a power delivery (PD) controller coupled to the charging interface, configured to identify, based on an interrupt signal from the charging interface, that the charging interface is connected to the external device, and obtain connection information of the charging interface; the connection information being configured to indicate a connection state of the charging interface, the connection state being either a connected state or a disconnected state; and the connection information being configured to indicate, when the charging interface is in the connected state, a device type of the external device and / or the electronic device, the device type being either an output device or a receiving device; The PD controller has at least one power output terminal; a first reverse charging link, wherein the charging interface is coupled to the battery via the first reverse charging link; a battery charging controller, comprising a positive charging state and a reverse charging state, the battery charging controller being coupled to the first reverse charging link; at least one second reverse charging link, wherein one of the charging interfaces is connected to one of the power output terminals via the second reverse charging link; a controller coupled to the PD controller, the battery charging controller, and the second reverse charging link; The controller is configured to control the battery charging controller to switch to a reverse charging state and control the target link to be shut down for reverse charging when it is determined that the electronic device meets a first preset condition based on the connection information of the at least one charging interface; Among them, the first preset condition includes that the electronic device is not in a forward charging state, and any one or more of the charging interfaces are connected to a receiving device; the target link includes a second reverse charging link corresponding to the charging interface connected to the receiving device.

2. The electronic device according to claim 1, wherein The controller is also used for: When it is determined that the electronic device meets the second preset condition, controlling the battery charging controller to switch to the positive charging state and controlling the target link to be turned on; The second preset condition includes that the electronic device is in the forward charging state.

3. The electronic device according to claim 1, wherein The controller is also used for: When it is determined that the electronic device meets a second preset condition, the battery charging controller is controlled to switch to the positive charging state, and the target link is controlled to be turned on; wherein the second preset condition includes one of the following situations: The electronic device is in the forward charging state; The second preset condition also includes that the electronic device is not in the forward charging state, and any of the charging interfaces is not connected to a receiving device.

4. The electronic device according to claim 1, wherein: The target link also includes other links in the at least one second reverse charging link except the second reverse charging link corresponding to the charging interface connected to the receiving device.

5. The electronic device according to any one of claims 1 to 4, characterized in that: The at least one charging interface includes a first interface and a second interface; the at least one second reverse charging link includes a first sub-link and a second sub-link; the at least one power output end includes a first power output end and a second power output end; The first interface is connected to the first power output terminal through the first sub-link, and the second interface is connected to the second power output terminal through the second sub-link.

6. The electronic device according to claim 5, characterized in that When the first interface and / or the second interface is connected to an output device, the electronic device is in the forward charging state; When neither the first interface nor the second interface is connected to an output device, the electronic device is not in the forward charging state.

7. The electronic device according to claim 6, wherein: The first interface and / or the second interface is connected to an output device, including one of the following situations: The first interface is connected to an output device, and the second interface is connected to an output device; The first interface is connected to an output device, and the second interface is connected to a receiving device; The first interface is connected to an output device, and the second interface is in a disconnected state; The first interface is connected to a receiving device, and the second interface is connected to an output device; The first interface is in a non-connected state, and the second interface is connected to an output device.

8. The electronic device according to claim 6, wherein: The first interface and the second interface are not connected to an output device, including one of the following situations: The first interface is connected to a receiving device, and the second interface is in a disconnected state; The first interface is connected to a receiving device, and the second interface is connected to a receiving device; The first interface is in a disconnected state, and the second interface is connected to a receiving device; The first interface is in a disconnected state, and the second interface is in a disconnected state.

9. The electronic device according to claim 5, wherein: The first sub-link includes a first switching element; the second sub-link includes a second switching element; A first end of the first switch element is coupled to the first interface, and a second end of the first switch element is coupled to the first power supply output end; A first end of the second switch element is coupled to the second interface, and a second end of the second switch element is coupled to the second power supply output end; The third end of the first switch element and the third end of the second switch element are both coupled to the controller; the controller is configured to output a first control instruction and a second control instruction, the first control instruction being configured to instruct the first switch element to switch to a closed state or an open state, and the second control instruction being configured to instruct the second switch element to switch to a closed state or an open state; wherein when the first switch element and the second switch element are switched to the closed state, the first sub-link and the second sub-link are disconnected; When the first switching element and the second switching element are switched to an off state, the first sub-link and the second sub-link are turned on.

10. The electronic device according to claim 5, wherein: Also comprising a third switching element; A first end of the third switch element is coupled to the battery charging controller, a second end of the third switch element is coupled to a reference ground, and a third end of the third switch element is coupled to the controller; the controller is further configured to output a third control instruction; The third control instruction is used to instruct the third switch element to switch to a closed state or an open state; when the third switch element is switched to a closed state, the battery charging controller switches to the reverse charging state; when the third switch element is switched to an open state, the battery charging controller switches to the positive charging state.

11. The electronic device according to claim 10, characterized in that The connection information is further used to indicate the current parameters and voltage parameters required by the external device when the external device is a receiving device; The controller is coupled to the battery charging controller, and is further configured to control the current and voltage of the battery charging controller when the battery charging controller switches to a reverse charging state for reverse charging according to the current parameter and the voltage parameter.

12. The electronic device according to any one of claims 1 to 4 and 6 to 11, characterized in that: The controller is also used for: Before reverse charging, determining whether the output power of the electronic device is greater than a preset threshold; When the output power of the electronic device is greater than the preset threshold, the battery charging controller is controlled to switch to the reverse charging state for reverse charging.

13. The electronic device according to any one of claims 1 to 4 and 6 to 11, characterized in that: The electronic device is a personal computer PC.

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