CN114123385A

CN114123385A - Charging and discharging circuit, charging method and electronic equipment

Info

Publication number: CN114123385A
Application number: CN202111278311.0A
Authority: CN
Inventors: 桑钊
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2021-10-30
Filing date: 2021-10-30
Publication date: 2022-03-01

Abstract

The application discloses a charging and discharging circuit, a charging method and electronic equipment, relates to the technical field of charging, and can reduce electric quantity loss caused by voltage reduction in the charging and discharging process on the premise of realizing quick charging. The circuit comprises a charging control unit, a voltage reduction module, a first switch, a second switch and a third switch, wherein the first switch is coupled with a second end of a first battery cell and a first end of a second battery cell; a second switch is coupled with the second end of the first cell and the second end of the second cell; a third switch is coupled with the first end of the first cell and the first end of the second cell; the voltage step-down module is coupled to the first end of the first cell and the second end of the second cell. The charging control unit is respectively coupled with the first switch, the second switch, the third switch and the battery. The charging control unit controls the battery to be in a series charging series discharging mode or a parallel charging parallel discharging mode, and adjusts a proper voltage reduction mode to reduce electric quantity loss caused by voltage reduction.

Description

Charging and discharging circuit, charging method and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of charging, in particular to a charging and discharging circuit, a charging method and electronic equipment.

Background

With the development of science and technology, terminal devices such as mobile phones and tablets become one of important devices in daily life of people, and electronic products such as mobile phones and tablets are mainly powered by batteries arranged in the mobile phones and tablets in the using process, and due to the limitation of the electric quantity of the batteries, the electric quantity is consumed quickly when the mobile phones and tablets are always in the using state. Therefore, the ability to rapidly charge a battery is becoming one of the more and more important functions.

Taking a mobile phone as an example, at present, various manufacturers basically support fast charging, and especially, in order to realize faster charging, some manufacturers even design a dual-battery charging scheme. In the current double-battery-core charging scheme, a double-battery-core series charging mode is mainly adopted, and due to the double-battery-core series charging mode, when the double batteries are discharged, the overall voltage of the battery can reach 7-9V and is higher than the voltage required by the current mobile phone system, so that a voltage reduction module needs to be arranged in the mobile phone to reduce the voltage, and then the voltage is supplied to the mobile phone system. The loss of electric quantity can be caused in the process of reducing the voltage, and the endurance of the mobile phone battery is influenced.

Disclosure of Invention

The application provides a charging and discharging circuit, a charging method and electronic equipment, which can optimize the charging and discharging process of a double-cell battery in the electronic equipment, reduce the electric quantity loss caused by voltage reduction in the discharging process and improve the cruising ability of the battery on the premise of realizing quick charging.

In a first aspect, the present application provides a charging and discharging circuit, which is applied to a terminal device, and includes a battery, where the battery includes a first electrical core and a second electrical core, and the battery is used to supply power to a terminal device system, and the circuit further includes: the charging control unit, the voltage reduction module, the first switch, the second switch and the third switch.

Two ends of the first switch are respectively coupled with the second end of the first battery cell and the first end of the second battery cell; two ends of the second switch are respectively coupled with the second end of the first battery cell and the second end of the second battery cell; two ends of the third switch are respectively coupled with the first end of the first battery cell and the first end of the second battery cell; the voltage step-down module is coupled to the first end of the first cell and the second end of the second cell.

The charging control unit is coupled with the battery and used for detecting the state of the battery and outputting a first control signal, a second control signal and a third control signal; the state of the battery includes at least the charge of the battery or the voltage of the battery.

The charging control unit is coupled with the first switch and controls the first switch through a first control signal; the charging control unit is coupled with the second switch and controls the second switch through a second control signal; the charging control unit is coupled with the third switch and controls the third switch through a third control signal.

The charging control unit is coupled with the voltage reduction module and outputs a fourth control signal; the fourth control signal is used for switching the working mode of the voltage reduction module; the charging control unit is coupled with the terminal equipment system.

Based on the charging and discharging circuit, when the charging and discharging circuit is applied to a charging and discharging scene of electronic equipment, the states of the first switch, the second switch and the third switch can be controlled through the charging control unit, and the working mode of the voltage reduction module can be controlled, so that the two battery cores in the battery can be charged in series and discharged in series, and a proper voltage reduction working mode is matched; and the parallel charging and parallel discharging of the two battery cores in the battery are realized, and a proper voltage reduction working mode is matched. Through detecting the state (electric quantity or voltage) of the battery, the charging control unit can select the charging and discharging circuit according with the current battery state according to different battery states and select a proper voltage reduction working mode, so that the electric quantity loss caused by voltage reduction in the charging and discharging process in the traditional scheme is reduced, and the cruising ability of the battery can be improved.

In a possible design of the first aspect, when the battery is in the charging state, if the state of the battery is the first state; the first control signal is used for controlling the first switch to be in a closed state, the second control signal is used for controlling the second switch to be in an open state, the third control signal is used for controlling the third switch to be in an open state, and the fourth control signal is used for controlling the voltage reduction module to be in a first voltage reduction mode, so that the first battery cell and the second battery cell are in a series charging and discharging mode.

The first state is that the electric quantity of the battery is lower than or equal to a first threshold value, or the voltage of the battery is lower than or equal to a second threshold value; the first voltage reduction mode is a voltage reduction mode in which the electric quantity loss is small when the first battery cell and the second battery cell are connected in series.

In this case, when the battery is in the first state, which indicates that the charge of the battery is low in this state, the battery needs to be charged quickly to increase the charge of the battery. The first switch is controlled to be in a closed state, the second switch and the third switch are controlled to be in an open state, so that the first battery cell and the second battery cell are in a series connection state, and the voltage reduction module is controlled to be switched to a first voltage reduction mode with low electric quantity loss when the first battery cell and the second battery cell are connected in series. Establish ties first electric core and second electric core, can carry out quick charge to the battery, the voltage of battery this moment is higher, adopts first step-down mode, can reduce the electric quantity loss that the step-down brought when discharging in this mode (series connection charge and discharge mode).

In a possible design of the first aspect, when the battery is in the charging state, if the state of the battery is the second state; the first control signal is used for controlling the first switch to be in an off state, the second control signal is used for controlling the second switch to be in a on state, the third control signal is used for controlling the third switch to be in an on state, and the fourth control signal is used for controlling the voltage reduction module to be in a second voltage reduction mode, so that the first battery cell and the second battery cell are in parallel charging and discharging modes.

The second state is that the battery has an electric quantity higher than a first threshold value, or the battery has a voltage higher than a second threshold value; the second voltage reduction mode is a voltage reduction mode in which the electric quantity loss is small when the first battery cell and the second battery cell are connected in parallel.

In this case, when the battery is in the second state, it indicates that the electric quantity of the battery in this state is relatively sufficient, mainly aiming at reducing the electric quantity loss in the discharging process of the battery, and the first battery cell and the second battery cell are connected in parallel, and the voltage of the battery is relatively low compared with the case that the first battery cell and the second battery cell are connected in series. Therefore, the first switch is controlled to be in an off state, and the second switch and the third switch are controlled to be in a closed state, so that the first battery cell and the second battery cell are in a parallel connection state, and the voltage reduction module is controlled to be switched to a second voltage reduction mode with low electric quantity loss when the first battery cell and the second battery cell are connected in parallel. When first electric core and second electricity core are parallelly connected, the voltage of battery this moment is close with required supply voltage in the terminal equipment, need not to carry out the step-down processing of high voltage, adopts second step-down mode (for example directly supply power), can reduce or even avoid the electric quantity loss that the step-down process brought to improve the duration of battery.

When the state of the battery is changed from the first state to the second state, the first control signal is used for controlling the first switch to be in an off state, the second control signal is used for controlling the second switch to be in a closed state, the third control signal is used for controlling the third switch to be in a closed state, and the fourth control signal is used for controlling the voltage reduction module to be in a second voltage reduction mode, so that the first battery cell and the second battery cell are in parallel charging and discharging modes.

The first voltage reduction mode is a voltage reduction mode with low electric quantity loss when the first battery cell and the second battery cell are connected in series; the second voltage reduction mode is a voltage reduction mode in which the electric quantity loss is small when the first battery cell and the second battery cell are connected in parallel.

The first state is that the electric quantity of the battery is lower than or equal to a first threshold value, and the second state is that the electric quantity of the battery is higher than the first threshold value; or the first state is that the voltage of the battery is lower than or equal to a second threshold value, and the second state is that the voltage of the battery is higher than the second threshold value.

In this case, the design shows the change of the charging and discharging circuit during the charging process of the battery from the low electric quantity (voltage) to the high electric quantity (voltage), and the switching of the step-down mode of the step-down module. Specifically, when the electric quantity of the battery is low, a series charging and discharging mode is adopted, and the voltage reduction module is adjusted to be in the first voltage reduction mode, so that the battery is rapidly charged; when the electric quantity of the battery is higher, a parallel charging and discharging mode is adopted, and the voltage reduction module is adjusted to be in a second voltage reduction mode, so that the electric quantity loss caused in the voltage reduction process is reduced.

In a possible design manner of the first aspect, the voltage reduction module includes a Buck chip and a Bypass chip, the Buck chip is in a working state in the first voltage reduction mode, and the Bypass chip is in a non-working state in the first voltage reduction mode; the second voltage reduction mode is that the Bypass chip is in a working state, and the Buck chip is in a non-working state. The Buck chip is suitable for voltage reduction processing when the voltage is high, the Bypass chip is suitable for voltage reduction processing when the voltage is low, when the first chip and the second chip are connected in series, the battery voltage is high, and at the moment, the Buck chip is adopted for working; when the first chip and the second chip are connected in parallel, the battery voltage is low, and the Bypass chip is adopted to work at the moment.

In a second aspect, the present application provides a method of charging, which is applied to the circuit according to the first aspect and any one of the possible designs thereof, the method including:

detecting the state of a battery in the terminal equipment, wherein the state of the battery at least comprises the electric quantity of the battery or the voltage of the battery;

if the state of the battery is the first state, the battery is charged in a series charging mode, and the working mode of the voltage reduction module is adjusted to be the first voltage reduction mode; and if the state of the battery is the second state, the battery is charged in a parallel charging mode, and the working mode of the voltage reduction module is adjusted to be the second voltage reduction mode.

The first state is that the electric quantity of the battery is lower than or equal to a first threshold value, or the voltage of the battery is lower than or equal to a second threshold value; the second state is that the battery has an electric quantity higher than the first threshold value, or the battery has a voltage higher than the second threshold value.

On the basis, the state (electric quantity or voltage) of the battery is detected, and when the electric quantity is low, a series charging mode is adopted for quick charging; when the electric quantity of the battery is higher, the parallel charging mode is adopted, so that the electric quantity loss caused by voltage reduction due to higher voltage in the power supply process of the battery can be reduced.

In a possible design manner of the second aspect, the battery is charged in a series charging mode, and the operation mode of the step-down module is adjusted to be the first step-down mode, including:

the first control signal controls the first switch to be in a closed state, the second control signal controls the second switch to be in an open state, the third control signal controls the third switch to be in an open state, and the fourth control signal controls the voltage reduction module to be in a first voltage reduction mode.

In a possible design manner of the second aspect, the battery is charged in a parallel charging mode, and the operation mode of the step-down module is adjusted to be a second step-down mode, including:

the first control signal controls the first switch to be in an open state, the second control signal controls the second switch to be in a closed state, the third control signal controls the third switch to be in a closed state, and the fourth control signal controls the voltage reduction module to be in a second voltage reduction mode.

In a possible design manner of the second aspect, the voltage reduction module includes a Buck chip and a Bypass chip; adjusting the working mode of the voltage reduction module to be a first voltage reduction mode, comprising:

adjusting a Buck chip in the voltage reduction module to be in a working state, and adjusting a Bypass chip in the voltage reduction module to be in a non-working state;

adjusting the operating mode of the voltage reduction module to a second voltage reduction mode, comprising:

the Bypass chip in the voltage reduction module is adjusted to be in a working state, and the Buck chip in the voltage reduction module is adjusted to be in a non-working state.

In a third aspect, the present application provides an electronic device comprising a battery and a charging and discharging circuit, the battery being electrically coupled to the charging and discharging; the charging and discharging circuit is adapted to perform the method according to the second aspect and any of its possible design forms when the electronic device is in operation.

It can be understood that, in the charging method according to the second aspect and the electronic device according to the third aspect, reference may be made to the advantageous effects of the first aspect and any one of the possible design manners thereof, and details are not repeated herein.

In a fourth aspect, the present application provides a battery, where the battery includes a first battery cell and a second battery cell, a negative electrode of the first battery cell is connected to a positive electrode of the second battery cell through a first wire, and a first switch is disposed on the first wire; the negative electrode of the first battery cell is connected with the negative electrode of the second battery cell through a second lead, and a second switch is arranged on the second lead; the positive electrode of the first battery cell is connected with the positive electrode of the second battery cell through a third wire, and a third switch is arranged on the third wire.

On this basis, by arranging the first switch, the second switch and the third switch between the first battery cell and the second battery cell, the connection state (series connection or parallel connection) of the first battery cell and the second battery cell can be adjusted by controlling the states of the first switch, the second switch and the third switch.

Drawings

Fig. 1 is a schematic flow chart of a dual-cell fast charging method in the prior art;

fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of a hardware system work flow of an electronic device according to an embodiment of the present application;

fig. 4 is a schematic circuit diagram of a power conversion chip in the prior art;

fig. 5 is a schematic flowchart of a charging method according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a chip system according to an embodiment of the present disclosure.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the embodiments of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

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

In the present application, "at least one" means one or more, "a plurality" means two or more. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple.

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 associated listed items. The term "and/or" is an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., A and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in the present application generally indicates that the former and latter related objects are in an "or" relationship.

It is also to be understood that, in the present application, unless otherwise explicitly specified or limited, the term "coupled" is to be interpreted broadly, e.g., "coupled" may be a fixed connection, a sliding connection, a removable connection, an integral part, or the like; may be directly connected or indirectly connected through an intermediate.

It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It should be appreciated that reference throughout this specification to "one embodiment," "another embodiment," "one possible design" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment of the present application" or "in another embodiment of the present application" or "in one possible design" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

For convenience of explaining the technology in the embodiment of the present application, before describing the embodiment of the present application, a scheme of a dual-core fast charging in the prior art is described.

Referring to fig. 1, a method for charging a dual-battery cell in the prior art may be referred to, where fig. 1 is a schematic flow chart of a dual-battery cell rapid charging method in the prior art. The solid line in the figure indicates a charging circuit, and the broken line indicates a discharging circuit. As shown in fig. 1, the battery in this scheme includes an electric core 1 and an electric core 2, where the electric core 1 and the electric core 2 are connected in series, and in the charging process, a switched capacitor charging chip is disposed between the battery and the charger, and the switched capacitor charging chip can manage parameters such as voltage and current in the charging process, so as to charge the battery with voltage and current of appropriate magnitude. The current is output to the switched capacitor charging chip through the charger, then input to the electric core 1 and the electric core 2 which are connected in series, then flow out through the negative pole of the electric core 2, return to the switched capacitor charging chip and the charger to form a closed charging loop, and charging of the electric core 1 and the electric core 2 is realized. As can be seen from fig. 1, this scheme is a charging mode in which two cells of the battery are connected in series. Because the battery cell 1 and the battery cell 2 are connected in series, the voltage of the battery is the sum of the voltages of the battery cell 1 and the battery cell 2, in the discharge circuit, the battery cell 1 and the battery cell 2 also supply power to the mobile phone system in series, but the voltages of the battery cell 1 and the battery cell 2 after series connection are higher than the power supply voltage required by the mobile phone system, and therefore the voltage of the battery cell 1 and the battery cell 2 after series connection needs to be reduced when the mobile phone system is supplied with power. As shown in fig. 1, a voltage reduction module is connected between the battery and the mobile phone system, in the scheme, the voltage reduction module may adopt a Buck chip, and is configured to reduce the output voltage of the battery and then supply the reduced voltage to the mobile phone system. In this scheme, owing to need adopt the step-down module to step down the voltage of battery output, can cause the loss of electric quantity at the in-process of step-down to influence electronic equipment's duration, among the prior art scheme, generally have 5% electric quantity loss.

The embodiment of the application provides a quick charging method which can be applied to electronic equipment comprising a battery. Specifically, the method can be applied to the process of quickly charging the electronic equipment and the process of discharging the battery of the electronic equipment to supply power to the electronic equipment. The battery can be charged quickly, and the electric quantity loss of the battery in the discharging process is reduced.

For example, the electronic device in the embodiment of the present application may be a mobile phone, a tablet computer, a smart watch, a desktop, a laptop, a handheld computer, a notebook, an ultra-mobile personal computer (UMPC), a netbook, a cellular phone, a Personal Digital Assistant (PDA), an Augmented Reality (AR) \ Virtual Reality (VR) device, and the like, which include a rechargeable battery, and the embodiment of the present application does not particularly limit the specific form of the electronic device.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an electronic device 100 according to an embodiment of the present disclosure. The electronic device 100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a button 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a Subscriber Identity Module (SIM) card interface 195, and the like.

It is to be understood that the illustrated structure of the embodiment of the present invention does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 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 (NPU), and/or a Micro Controller Unit (MCU), etc. The different processing units may be separate devices or may be integrated into one or more processors.

The controller may be, among other things, a neural center and a command center of the electronic device 100. The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, a Serial Peripheral Interface (SPI), an integrated circuit built-in audio (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, etc.

The I2C interface is a bi-directional synchronous serial bus that includes a Serial Data Line (SDL) and a Serial Clock Line (SCL). In some embodiments, processor 110 may include multiple sets of I2C buses. The processor 110 may be coupled to the touch sensor 180K, the charger, the flash, the camera 193, etc. through different I2C bus interfaces, respectively. For example: the processor 110 may be coupled to the touch sensor 180K via an I2C interface, such that the processor 110 and the touch sensor 180K communicate via an I2C bus interface to implement the touch functionality of the electronic device 100. For example, an I2C interface may connect the MCU with a Touch Panel (TP), and an I2C interface may connect the MCU with a pressure sensor.

The SPI is used by the processor 110 to synchronize serial data transmissions with various peripheral devices, such as fingerprint sensors. Compared with the I2C interface, the data transmission speed of the SPI is faster. For example, the SPI may connect the MCU with the fingerprint sensor. The SPI can also connect the MCU with the TP, and the MCU with the pressure sensor.

The I2S interface may be used for audio communication. In some embodiments, processor 110 may include multiple sets of I2S buses. The processor 110 may be coupled to the audio module 170 via an I2S bus to enable communication between the processor 110 and the audio module 170. In some embodiments, the audio module 170 may communicate audio signals to the wireless communication module 160 via the I2S interface, enabling answering of calls via a bluetooth headset.

The PCM interface may also be used for audio communication, sampling, quantizing and encoding analog signals. In some embodiments, the audio module 170 and the wireless communication module 160 may be coupled by a PCM bus interface. In some embodiments, the audio module 170 may also transmit audio signals to the wireless communication module 160 through the PCM interface, so as to implement a function of answering a call through a bluetooth headset. Both the I2S interface and the PCM interface may be used for audio communication.

The UART interface is a universal serial data bus used for asynchronous communications. The bus may be a bidirectional communication bus. It converts the data to be transmitted between serial communication and parallel communication. In some embodiments, a UART interface is generally used to connect the processor 110 with the wireless communication module 160. For example: the processor 110 communicates with a bluetooth module in the wireless communication module 160 through a UART interface to implement a bluetooth function. In some embodiments, the audio module 170 may transmit the audio signal to the wireless communication module 160 through a UART interface, so as to realize the function of playing music through a bluetooth headset.

MIPI interfaces may be used to connect processor 110 with peripheral devices such as display screen 194, camera 193, and the like. The MIPI interface includes a Camera Serial Interface (CSI), a Display Serial Interface (DSI), and the like. In some embodiments, processor 110 and camera 193 communicate through a CSI interface to implement the capture functionality of electronic device 100. The processor 110 and the display screen 194 communicate through the DSI interface to implement the display function of the electronic device 100.

The GPIO interface may be configured by software. The GPIO interface may be configured as a control signal and may also be configured as a data signal. In some embodiments, a GPIO interface may be used to connect the processor 110 with the camera 193, the display 194, the wireless communication module 160, the audio module 170, the sensor module 180, and the like. The GPIO interface may also be configured as an I2C interface, an I2S interface, a UART interface, a MIPI interface, and the like.

The USB interface 130 is an interface conforming to the USB standard specification, and may specifically be a Mini USB interface, a Micro USB interface, a USB Type C interface, or the like. The USB interface 130 may be used to connect a charger to charge the electronic device 100, and may also be used to transmit data between the electronic device 100 and a peripheral device. And the earphone can also be used for connecting an earphone and playing audio through the earphone. The interface may also be used to connect other electronic devices, such as AR devices and the like.

It should be understood that the connection relationship between the modules according to the embodiment of the present invention is only illustrative, and is not limited to the structure of the electronic device 100. In other embodiments of the present application, the electronic device 100 may also adopt different interface connection manners or a combination of multiple interface connection manners in the above embodiments.

The charging management module 140 is configured to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the electronic device 100. The charging management module 140 may also supply power to the electronic device through the power management module 141 while charging the battery 142.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140 and provides power to the processor 110, the internal memory 121, the external memory, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.

The wireless communication function of the electronic device 100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the electronic device 100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied to the electronic device 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 170A, the receiver 170B, etc.) or displays an image or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional modules, independent of the processor 110.

The wireless communication module 160 may provide a solution for wireless communication applied to the electronic device 100, including Wireless Local Area Networks (WLANs), such as Wi-Fi networks, Bluetooth (BT), Global Navigation Satellite Systems (GNSS), Frequency Modulation (FM), NFC, Infrared (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves. When the electronic device 100 is a first device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the electronic device 100, meaning that the first device includes an NFC chip. The NFC chip can improve the NFC wireless communication function. When the electronic device 100 is a second device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the electronic device 100, meaning that the first device includes an electronic tag (e.g., an RFID tag). The NFC chip of the other device is close to the electronic tag to perform NFC wireless communication with the second device.

In some embodiments, antenna 1 of electronic device 100 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that electronic device 100 can communicate with networks and other devices through wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The electronic device 100 implements display functions via the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, video, and the like. The display screen 194 includes a display panel. The display Panel may be a Liquid Crystal Display (LCD), a capacitive Touch Panel (TP), an organic light-emitting diode (OLED), an active matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-electro-led, a quantum dot light-emitting diode (QLED), or the like. In some embodiments, the electronic device 100 may include 1 or N display screens 194, with N being a positive integer greater than 1.

The electronic device 100 may implement a shooting function through the ISP, the camera 193, the video codec, the GPU, the display 194, the application processor, and the like.

The ISP is used to process the data fed back by the camera 193. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the electronic device 100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the electronic device 100 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The electronic device 100 may support one or more video codecs. In this way, the electronic device 100 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. Applications such as intelligent recognition of the electronic device 100 can be realized through the NPU, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to extend the memory capability of the electronic device 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

The internal memory 121 may be used to store computer-executable program code, which includes instructions. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the internal memory 121. The internal memory 121 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (such as audio data, phone book, etc.) created during use of the electronic device 100, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like.

The methods in the following embodiments may be implemented in the electronic device 100 having the above-described hardware structure. In the following embodiments, the method of the present application is described by taking the electronic device 100 as a mobile phone as an example.

In the embodiment of the present application, for convenience of description, a control signal for the charge control unit to control the first switch K1 is set as a first control signal C1, a control signal for the charge control unit to control the second switch K2 is set as a second control signal C2, a control signal for the charge control unit to control the third switch K3 is set as a third control signal C3, a monitoring signal for the charge control unit to monitor the battery state is set as C4, a control signal for the charge control unit to control the voltage reduction module is set as a fourth control signal C5, and a control signal for the charge control unit to control the charge chip is set as a fifth control signal C6.

Referring to fig. 3, fig. 3 is a schematic diagram of a hardware system work flow of an electronic device according to an embodiment of the present application. The solid line in fig. 3 indicates a charging circuit, the broken line indicates a discharging circuit, and the two-dot chain line indicates control signals of the charging control unit to the respective devices. As shown in fig. 3, the electronic device includes a charger, a charging chip, a battery, a voltage-reducing module, a charging control unit, and a mobile phone system, where the charger and the charging chip are used to charge the battery, the voltage-reducing module is used to reduce an output voltage of the battery, and the battery is used to supply power to the mobile phone system.

The battery includes two electric cores: a first cell and a second cell, wherein the first cell comprises two ends: a positive electrode and a negative electrode; the second cell also includes two ends: a positive electrode and a negative electrode. In this embodiment of the application, the first end of the first battery cell may be a positive electrode of the first battery cell, and the second end of the first battery cell may be a negative electrode of the first battery cell; the first end of the second cell may be referred to as a positive electrode of the second cell, and the second end of the second cell may be referred to as a negative electrode of the second cell.

The negative pole of first electric core and the positive pole of second electric core are connected through first wire, are provided with first switch K1 on the first wire, and the both ends of first switch K1 are coupled with the second end of first electric core and the first end of second electric core respectively promptly. The communication of the first conductor can be controlled by switching the state of the first switch K1. For example, when the first switch K1 is switched to the "closed" state, the first conductive line is in the on state, and when the first switch K1 is switched to the "open" state, the first conductive line is in the off state.

The negative pole of first electric core and the negative pole of second electric core are connected through the second wire, are provided with second switch K2 on the second wire, and the both ends of second switch K2 are coupled with the second end of first electric core and the second end of second electric core respectively promptly. The second conductor can be controlled to communicate by switching the state of the second switch K2. For example, when the second switch K2 is switched to the "closed" state, the second conductive line is in the on state, and when the second switch K2 is switched to the "open" state, the second conductive line is in the off state.

The positive electrode of the first battery cell is connected with the positive electrode of the second battery cell through a third wire, and a third switch K3 is arranged on the third wire, namely two ends of the third switch K3 are respectively coupled with the first end of the first battery cell and the first end of the second battery cell. The connection of the third conductor can be controlled by switching the state of the third switch K3. For example, switching the third switch K3 to the "on" state places the third conductive line in the on state, and switching the third switch K3 to the "off" state places the third conductive line in the off state. The charging control unit is used for controlling the state switching of the first switch K1, the second switch K2 and the third switch K3, and the charging control unit can control the state of the voltage reduction module. And the charging control unit is in communication connection with the mobile phone system.

The charger is electrically connected with the charging chip, the positive electrode of the charging chip is electrically connected with the positive electrode of the battery, and the negative electrode of the charging chip is electrically connected with the negative electrode of the battery. Specifically, the positive electrode of the charging chip may be electrically connected to the positive electrode of the first battery cell, and the negative electrode of the charging chip may be electrically connected to the negative electrode of the second battery cell. The charging mode of the charger for the battery can be changed by controlling the states of the first switch K1, the second switch K2 and the third switch K3.

Specifically, when the first control signal C1 output by the charging control unit controls the first switch K1 to be in an "on" state, and the output second control signal C2 and the output third control signal C3 respectively control the second switch K2 and the third switch K3 to be in an "off" state, at this time, the first battery cell and the second battery cell are connected through the first wire, and the first battery cell and the second battery cell are in a series state, then the mode that the charger charges two battery cells in the battery is a series mode. When the first control signal C1 output by the charging control unit controls the first switch K1 to be in an "off" state, and the output second control signal C2 and the output third control signal C3 respectively control the second switch K2 and the third switch K3 to be in an "on" state, at this time, the first battery cell is communicated with the charger through the second wire, the second battery cell is communicated with the charger through the third wire, the first battery cell and the second battery cell are in a parallel state, and at this time, the mode that the charger charges two battery cells in the battery is a parallel mode.

Meanwhile, the positive electrode and the negative electrode of the battery are electrically connected with the mobile phone system so as to supply power to the mobile phone system. Specifically, in the hardware system work flow diagram shown in fig. 3, the positive electrode of the mobile phone system is connected to the positive electrode of the battery through a circuit, the negative electrode of the mobile phone system is connected to the negative electrode of the battery, and a voltage reduction module is further connected between the mobile phone system and the battery. It should be noted that the positive electrode of the battery may be a positive electrode of the first battery cell or a positive electrode of the second battery cell, and if the positive electrode of the battery is the positive electrode of the first battery cell, the negative electrode of the battery may be a negative electrode of the second battery cell; if the positive electrode of the battery is the positive electrode of the second battery cell, the negative electrode of the battery may be the negative electrode of the first battery cell.

The charging control unit may also control the states of the first switch K1, the second switch K2, and the third switch K3 during the process of supplying power to the mobile phone system by the battery. For example, when a series connection mode is required to supply power to a mobile phone system, the charging control unit may control the state of the first switch K1 to be a "closed" state by the output first control signal C1, and control the second switch K2 and the third switch K3 to be an "open" state by the output second control signal C2 and the output third control signal C3, respectively, so that the first wire is in a connected state, and the second wire and the third wire are in a disconnected state, thereby implementing the series connection of the first battery cell and the second battery cell. When the mobile phone system needs to be powered in a parallel connection mode, the charging control unit can control the state of the first switch K1 to be an off state through the output first control signal C1, and respectively control the second switch K2 and the third switch K3 to be an on state through the output second control signal C2 and the output third control signal C3, so that the first lead is in the off state, the second lead and the third lead are in a connected state, the first battery cell and the second battery cell are connected in parallel, and then the mobile phone system is powered through the discharge circuit.

The Buck module in this application embodiment can contain Buck chip and Bypass chip simultaneously, can control the Buck module through the control unit that charges to the operating condition of Buck chip and Bypass chip in the control Buck module. The Buck chip and the Bypass chip can be separated or integrated together. The circuit design of the Buck chip and the Bypass chip in the voltage reduction module in the embodiment of the present application may refer to the circuit structure shown in fig. 4, and fig. 4 is a schematic circuit structure diagram of a power conversion chip in the prior art. As shown in fig. 4, fig. 4 is a Buck Bypass power conversion chip of ONSEMI for a mobile phone. In the figure, the upper half is a Bypass unit, and the DCDC (direct current to direct current) in the lower half is a Buck DCDC unit. The Bypass circuit in the figure is generally a via through which a MOS is connected or a direct via. The Buck circuit in the figure can efficiently reduce the high voltage to the low voltage.

Because contain Buck chip and Bypass chip in the step-down module, can choose different chips for use to step down according to the connected mode of first chip in the battery and second chip. Illustratively, the voltage reduction module in the embodiment of the present application includes a Buck chip and a Bypass chip, and when a first chip and a second chip in the battery are in a serial working state, the charge control unit controls the Buck chip in the voltage reduction module to be in the working state; when the first chip and the second chip in the battery are in a parallel working state, the charging control unit controls the Bypass chip in the voltage reduction module to be in a working state. The Buck chip can reduce the high voltage to low voltage with higher efficiency when carrying out voltage reduction processing on the high-voltage battery, and the performance is superior to that of a Bypass chip. When the Bypass chip is used for processing the battery with lower voltage, the battery can be powered in a direct connection path mode, electric quantity loss can hardly be caused, and the loss performance of the electric quantity is superior to that of a Buck chip. Therefore, when the first chip and the second chip in the battery are in a working state of series connection, the Buck chip is selected for voltage reduction, and when the first chip and the second chip in the battery are in a working state of parallel connection, the Bypass chip is selected for voltage reduction.

The method for fast charging provided by the embodiment of the present application may be applied to the hardware system shown in fig. 3, and the method for fast charging provided by the embodiment of the present application is described below.

Referring to fig. 5, fig. 5 is a schematic flowchart of a charging method according to an embodiment of the present disclosure. As shown in fig. 5, the fast charging method may include steps S101 to S106:

s101, the charging control unit detects the state of the battery, wherein the state of the battery at least comprises the electric quantity of the battery or the voltage of the battery.

As shown in fig. 5, in the embodiment of the present application, in the process of rapidly charging the battery, different charging modes may be selected, and what charging mode is specifically adopted may be selected according to the state of the battery. Therefore, before the battery is charged, the state of the battery may be detected to select an appropriate charging mode according to the real-time state of the battery.

In the embodiment of the present application, the state of the battery at least includes the electric quantity of the battery or the voltage of the battery, and may refer to the state of the battery as the electric quantity of the battery, the state of the battery as the voltage of the battery, or the state of the battery as the electric quantity of the battery and the voltage of the battery. Generally, the voltage of the battery is in a direct proportion to the charge of the battery. Namely, the higher the electric quantity of the battery, the higher the voltage of the battery; the lower the charge of the battery, the lower the voltage of the battery. After the charging control unit detects the state of the battery, the states of the first switch K1, the second switch K2 and the third switch K3 can be switched to change the connection state between the first battery cell and the second battery cell in the battery, so that the battery can be charged in different charging modes.

S102, the charging control unit judges whether the electric quantity of the battery is higher than a first threshold value or whether the voltage of the battery is higher than a second threshold value.

If the charging control unit determines that the electric quantity of the battery is lower than or equal to the first threshold, or determines that the voltage of the battery is lower than or equal to the second threshold, it determines that the battery is in the first state, and executes step S103: charging in a series charging mode; if the charging control unit determines that the battery power is higher than the first threshold or determines that the battery voltage is higher than the second threshold, the charging control unit determines that the battery is in the second state, and executes step S105: and charging in a parallel charging mode.

Because the battery includes the first battery cell and the second battery cell, and the first battery cell and the second battery cell may be connected in series or in parallel, in the charging process, two series charging modes and two parallel charging modes are set in the embodiment of the present application. Since the state of the battery may refer to the charge of the battery and/or the voltage of the battery, the first state in this embodiment may refer to: the charge of the battery is equal to or lower than a first threshold value and/or the voltage of the battery is equal to or lower than a second threshold value. The second state may refer to: the charge of the battery is above the first threshold and/or the voltage of the battery is above the second threshold.

And S103, charging in a series charging mode.

When the state of the battery satisfies the condition of the first state, the charge control unit controls the connection state in the battery such that the charge mode of the battery is a series charge mode. It should be noted that the series charging mode in the embodiment of the present application refers to a state in which a first battery cell and a second battery cell in a battery are connected in series when the battery is charged.

For example, in the embodiment of the present application, the charge of the battery is taken as the state of the battery, and the first threshold is taken as 80% for reference. When the charging control unit detects that the electric quantity of the battery is lower than or equal to 80%, the charging control unit can control the first switch K1 to be in a closed state through the output first control signal C1, and respectively control the second switch K2 and the third switch K3 to be in an open state through the output second control signal C2 and the output third control signal C3, so that the first battery cell and the second battery cell in the battery are in a series connection state, and when the charger charges the battery, the charging is performed in a series charging mode.

For example, in the embodiment of the present application, the voltage of the battery may be used as the state of the battery, and the second threshold is 4V as a reference. When the charging control unit detects that the voltage of the battery is lower than or equal to 4V, the charging control unit may control the first switch K1 to be in a closed state by the output first control signal C1, and control the second switch K2 and the third switch K3 to be in an open state by the output second control signal C2 and the output third control signal C3, respectively, so that the first battery cell and the second battery cell in the battery are in a series connection state, and when the charger charges the battery, the charging is performed in a series charging mode.

In addition, it is also possible to detect the charge amount and the voltage of the battery at the same time, for example, when the charge control unit detects that the charge amount of the battery is equal to or lower than 80% and the voltage of the battery is equal to or lower than 4V, the battery is charged in the series charging mode

The charging control unit correspondingly controls each device in the charging circuit so as to realize that the battery in the first state adopts a series charging mode, and the battery can supply power to the mobile phone system in the charging process or after charging. Due to the fact that a series charging mode is adopted, namely a first battery cell and a second battery cell in the battery are connected in series, the connection mode can generate corresponding influence on the discharging circuit, and in order to reduce the electric quantity loss of the battery in the power supply process to the maximum extent, matching control needs to be carried out on the discharging circuit at the same time, so that the electric quantity loss generated by voltage reduction is reduced, and the cruising ability of the battery is improved.

The step-down module in this application embodiment contains Buck chip and Bypass chip simultaneously, and the control of the operating condition of Buck chip and Bypass chip in to the step-down module through the control unit that charges realizes that the step-down module is in different mode. The voltage reduction module in the embodiment of the application can have two working modes: a first buck mode and a second buck mode. Wherein, the first voltage reduction mode is as follows: the Buck chip in the voltage reduction module is in a working state, and the Bypass chip in the voltage reduction module is in a non-working state. The second depressurization mode is: the Buck chip in the voltage reduction module is in a non-working state, and the Bypass chip in the voltage reduction module is in a working state.

And S104, the charging control unit adjusts the voltage reduction module to be in a first voltage reduction mode.

When the series mode is adopted for charging, the first battery cell and the second battery cell in the battery are in a series connection state, at the moment, the Buck chip in the voltage reduction module is adjusted to be in a working state, and the Bypass chip is adjusted to be in a non-working state. Taking the voltage of the first battery cell as 4V and the voltage of the second battery cell as 4V as an example, the voltage of the battery when the first battery cell and the second battery cell are connected in series is 8V, and taking the supply voltage required by the mobile phone system as 4.5V as an example, the output voltage of the battery is higher than the supply voltage of the mobile phone system, and the voltage of the battery needs to be reduced. When the high-voltage battery is subjected to voltage reduction treatment, the voltage reduction performance of the Buck chip is superior to that of the Bypass chip, so that the electric quantity loss in the power supply process can be reduced. At the moment, the voltage is reduced by adopting a first voltage reduction mode, namely the Buck chip in the voltage reduction module is in a working state.

And S105, charging in a parallel charging mode.

When the state of the battery satisfies the condition of the second state, the charging control unit controls the connection state in the battery so that the charging mode of the battery is a parallel charging mode. In the parallel charging mode in the embodiment of the present application, when the battery is charged, a first battery cell and a second battery cell in the battery are in a parallel connection state.

For example, in the embodiment of the present application, the charge of the battery is taken as the state of the battery, and the first threshold is taken as 80% for reference. When the charging control unit detects that the electric quantity of the battery is higher than 80%, the charging control unit can control the first switch K1 to be in an open state through the output first control signal C1, and respectively control the second switch K2 and the third switch K3 to be in a closed state through the output second control signal C2 and the output third control signal C3, so that the first battery cell and the second battery cell in the battery are in a parallel connection state, and when the charger charges the battery, the charging is performed in a parallel charging mode.

For example, in the embodiment of the present application, the voltage of the battery may be used as the state of the battery, and the second threshold is 4V as a reference. When the charging control unit detects that the battery has a power amount higher than 4V, the charging control unit may control the first switch K1 to be in an open state through the output first control signal C1, and control the second switch K2 and the third switch K3 to be in a closed state through the output second control signal C2 and the output third control signal C3, respectively, so that the first battery cell and the second battery cell in the battery are in a parallel connection state, and when the charger charges the battery, the charging is performed in a parallel charging mode.

Furthermore, the charge and voltage of the battery may be detected simultaneously, for example, when the charge control unit detects that the charge of the battery is higher than 80% and the voltage of the battery is higher than 4V, the battery may be charged in a parallel charging mode. Regarding the determination of which charging mode to use for charging by simultaneously detecting the amount of electricity and the voltage as the state of the battery, reference may be made to the related descriptions in the foregoing two examples.

And S106, the charging control unit adjusts the voltage reduction module to be in a second voltage reduction mode.

When the parallel mode is adopted for charging, the first battery cell and the second battery cell in the battery are in a parallel connection state, at the moment, the Bypass chip in the voltage reduction module is adjusted to be in a working state, and the Buck chip is adjusted to be in a non-working state. Taking the voltage of the first battery cell as 4.5V and the voltage of the second battery cell as 4.5V as an example, the voltage of the battery when the first battery cell and the second battery cell are connected in parallel is 4.5V, and taking the supply voltage required by the mobile phone system as 4.5V as an example, the output voltage of the battery can be directly used as the supply voltage of the mobile phone system. At the moment, the Bypass chip can directly conduct the battery and the mobile phone system, and the electricity of the battery is supplied to the mobile phone system. Under this condition, adopt Bypass chip to compare in the Buck chip, the loss that can reduce the electric quantity still less realizes saving the electric quantity, consequently when adopting the parallel mode to charge, the step-down module adopts the second step-down mode to work.

In the embodiment of the application, through the detection of the battery state, when the battery is charged, a proper charging mode can be selected according to the state of the battery, and if the state of the battery is detected to be the first state, that is, the electric quantity of the battery is low or the voltage of the battery core (the first battery core and/or the second battery core) is low, the battery needs to be rapidly charged at this moment, so that the electric quantity of the battery can be fully charged as soon as possible. Because the battery comprises the first battery cell and the second battery cell, a series charging mode is adopted, and the advantage of the series charging mode is that the charging speed is higher, but when the series charging is adopted, the output voltage of the battery is higher. At the moment, the working mode of the voltage reduction module is adjusted to be the first voltage reduction mode, so that the battery can supply power for the mobile phone system. If the state that detects the battery is the second state, the electric quantity of battery is higher or the voltage of electric core (first electric core and/or second electric core) is higher promptly, the non-first demand of electric quantity of battery is fully filled up fast this moment, switch to the parallelly connected mode of charging with the mode of charging, first electric core and second electric core parallel connection in the battery, the output voltage of battery is close with the required power supply voltage of cell-phone system, the mode of adjusting the step-down module this moment is the second step-down mode, adopt the Bypass chip promptly, can reduce the electric quantity loss that the step-down module step-down in-process caused.

It should be noted that, during the whole charging process, two charging modes can be adopted for charging. For example, when the charging control unit detects that the electric quantity of the battery is lower than 80%, and the battery is in the first state at this time, the charging control unit may adjust the connection state of the electric core in the battery, so that the charger may first charge the battery in the series charging mode. When the charging control unit detects that the electric quantity of the battery is charged to be higher than 80%, the battery is in the second state, and the charging control unit can adjust the connection state of the electric core in the battery, so that the charger can charge the battery in a parallel charging mode. That is, the battery may be charged first in a series charging mode and then in a parallel charging mode. The embodiment of the application does not limit a specific charging mode, and the charging control unit can detect the state of the battery in real time and adjust the state of the battery to different charging modes according to the real-time state of the battery.

According to the embodiment, the charging method can be used for charging in the series charging mode when the electric quantity of the battery is low so as to realize quick charging of the battery, and can be used for continuously charging the battery in the parallel charging mode when the electric quantity of the battery is high, and meanwhile, the battery is discharged in the parallel mode, so that the electric quantity loss caused by voltage reduction in the discharging process of the mobile phone can be reduced, and the cruising ability of the electronic equipment is improved.

Other embodiments of the present application provide an electronic device, which may include: a touch screen, memory, and one or more processors. The touch screen, memory and processor are coupled. The memory is for storing computer program code comprising computer instructions. When the processor executes the computer instructions, the electronic device may perform various functions or steps performed by the mobile phone in the above-described method embodiments. The structure of the electronic device may refer to the structure of the electronic device shown in fig. 2.

The embodiment of the present application further provides a chip system, as shown in fig. 6, the chip system 1700 includes at least one processor 1701 and at least one interface circuit 1702. The processor 1701 and the interface circuit 1702 may be interconnected by wires. For example, the interface circuit 1702 may be used to receive signals from other devices, such as a memory of an electronic device. As another example, the interface circuit 1702 may be used to send signals to other devices, such as the processor 1701. Illustratively, the interface circuit 1702 may read instructions stored in memory and send the instructions to the processor 1701. The instructions, when executed by the processor 1701, may cause the electronic device to perform the various steps in the embodiments described above. Of course, the chip system may further include other discrete devices, which is not specifically limited in this embodiment of the present application.

The embodiment of the present application further provides a computer storage medium, where the computer storage medium includes computer instructions, and when the computer instructions are run on the electronic device, the electronic device is enabled to execute each function or step executed by the mobile phone in the foregoing method embodiment.

The embodiment of the present application further provides a computer program product, which when running on a computer, causes the computer to execute each function or step executed by the mobile phone in the above method embodiments.

Through the description of the above embodiments, it is clear to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional modules is merely used as an example, and in practical applications, the above function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the embodiments provided in the present application, it should be understood that the disclosed method can be implemented in other ways. For example, the division of the modules or units is only one logical division, and the actual implementation may have another division, for example, multiple units or components may be combined or integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a charging and discharging circuit, is applied to terminal equipment, includes the battery, the battery includes first electric core and second electric core, the battery is used for terminal equipment power supply, its characterized in that still includes: the charging control unit, the voltage reduction module, the first switch, the second switch and the third switch;

two ends of the first switch are respectively coupled with the second end of the first battery cell and the first end of the second battery cell; two ends of the second switch are respectively coupled with the second end of the first battery cell and the second end of the second battery cell; two ends of the third switch are respectively coupled with the first end of the first battery cell and the first end of the second battery cell; the voltage reduction module is coupled with a first end of the first cell and a second end of the second cell;

the charging control unit is coupled with the battery and used for detecting the state of the battery and outputting a first control signal, a second control signal and a third control signal; the state of the battery at least comprises the charge of the battery or the voltage of the battery;

the charging control unit is coupled with the first switch and controls the first switch through the first control signal; the charging control unit is coupled with the second switch and controls the second switch through the second control signal; the charging control unit is coupled with the third switch and controls the third switch through the third control signal;

the charging control unit is coupled with the voltage reduction module and outputs a fourth control signal; the fourth control signal is used for switching the working mode of the voltage reduction module.

2. The circuit of claim 1, wherein when the battery is in the charging state, if the state of the battery is the first state;

the first control signal is used to control the first switch to be in a closed state, the second control signal is used to control the second switch to be in an open state, the third control signal is used to control the third switch to be in an open state, and the fourth control signal is used to control the voltage reduction module to be in a first voltage reduction mode, so that the first battery cell and the second battery cell are in a series charging and discharging mode;

the first state is that the electric quantity of the battery is lower than or equal to a first threshold value, or the voltage of the battery is lower than or equal to a second threshold value; the first voltage reduction mode is a voltage reduction mode in which electric quantity loss is small when the first battery cell and the second battery cell are connected in series.

3. The circuit of claim 1, wherein when the battery is in the charging state, if the state of the battery is the second state;

the first control signal is used to control the first switch to be in an off state, the second control signal is used to control the second switch to be in a on state, the third control signal is used to control the third switch to be in a on state, and the fourth control signal is used to control the voltage reduction module to be in a second voltage reduction mode, so that the first battery cell and the second battery cell are in parallel charging and discharging modes;

the second state is that the electric quantity of the battery is higher than a first threshold value, or the voltage of the battery is higher than a second threshold value; the second voltage reduction mode is a voltage reduction mode in which the electric quantity loss is small when the first battery cell and the second battery cell are connected in parallel.

4. The circuit of claim 1, wherein when the battery is in the charging state, if the state of the battery is the first state;

when the state of the battery is changed from a first state to a second state, the first control signal is used for controlling the first switch to be in an open state, the second control signal is used for controlling the second switch to be in a closed state, the third control signal is used for controlling the third switch to be in a closed state, and the fourth control signal is used for controlling the voltage reduction module to be in a second voltage reduction mode, so that the first battery cell and the second battery cell are in parallel charging and discharging modes;

the first voltage reduction mode is a voltage reduction mode with low electric quantity loss when the first battery cell and the second battery cell are connected in series; the second voltage reduction mode is a voltage reduction mode with low electric quantity loss when the first battery cell and the second battery cell are connected in parallel;

the first state is that the electric quantity of the battery is lower than or equal to a first threshold value, and the second state is that the electric quantity of the battery is higher than the first threshold value;

or the first state is that the voltage of the battery is lower than or equal to a second threshold value, and the second state is that the voltage of the battery is higher than the second threshold value.

5. The circuit according to claim 2 or 4, wherein the voltage reduction module comprises a Buck chip and a Bypass chip, the first voltage reduction mode is that the Buck chip is in an operating state, and the Bypass chip is in a non-operating state.

6. The circuit according to claim 3 or 4, wherein the voltage reduction module comprises a Buck chip and a Bypass chip, the second voltage reduction mode is that the Bypass chip is in an operating state, and the Buck chip is in a non-operating state.

7. A charging method applied to the circuit according to any one of claims 1 to 6, wherein the method comprises:

if the state of the battery is a first state, charging the battery in a series charging mode, and adjusting the working mode of the voltage reduction module to be a first voltage reduction mode;

if the battery is in a second state, charging the battery in a parallel charging mode, and adjusting the working mode of the voltage reduction module to be a second voltage reduction mode;

the first state is that the electric quantity of the battery is lower than or equal to a first threshold value, or the voltage of the battery is lower than or equal to a second threshold value; the second state is that the electric quantity of the battery is higher than the first threshold value, or the voltage of the battery is higher than the second threshold value.

8. The method of claim 7, wherein the charging the battery in the series charging mode, and adjusting the operating mode of the voltage reduction module to a first voltage reduction mode comprises:

9. The method of claim 7, wherein the charging the battery in the parallel charging mode, and adjusting the operation mode of the voltage reduction module to a second voltage reduction mode comprises:

the first control signal controls the first switch to be in an off state, the second control signal controls the second switch to be in a on state, the third control signal controls the third switch to be in a on state, and the fourth control signal controls the voltage reduction module to be in a second voltage reduction mode.

10. The method of claim 7, wherein the voltage reduction module comprises a Buck chip and a Bypass chip; the adjusting of the working mode of the voltage reduction module is a first voltage reduction mode, and includes:

adjusting the Buck chip in the voltage reduction module to be in a working state, and adjusting the Bypass chip in the voltage reduction module to be in a non-working state;

the adjusting of the working mode of the voltage reduction module is a second voltage reduction mode, and includes:

and adjusting the Bypass chip in the voltage reduction module to be in a working state, and adjusting the Buck chip in the voltage reduction module to be in a non-working state.

11. An electronic device comprising a battery and charging and discharging circuitry, the battery being coupled to the charging and discharging circuitry; the charging and discharging circuit is configured to perform the method of any one of claims 7-10 when the electronic device is operating.

12. The battery is characterized by comprising a first battery cell and a second battery cell, wherein a negative electrode of the first battery cell is connected with a positive electrode of the second battery cell through a first lead, and a first switch is arranged on the first lead;

the negative electrode of the first battery cell is connected with the negative electrode of the second battery cell through a second lead, and a second switch is arranged on the second lead;

the positive electrode of the first battery cell is connected with the positive electrode of the second battery cell through a third wire, and a third switch is arranged on the third wire.