CN113422410A

CN113422410A - Charging device and mobile terminal

Info

Publication number: CN113422410A
Application number: CN202110702436.5A
Authority: CN
Inventors: 李肇光; 张建志; 窦永清
Original assignee: Shenzhen Transsion Holdings Co Ltd
Current assignee: Shenzhen Transsion Holdings Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-09-21

Abstract

The application discloses charging device and mobile terminal, this charging device includes: the electric connector is used for connecting a charging power supply; a rechargeable battery; the input ends of the charging charge pumps are connected with the electric connector, and the output ends of the charging charge pumps are connected with the rechargeable battery; the charging charge pump is used for converting a charging power supply accessed by the electric connector into a power supply and outputting the power supply to the charging battery so as to charge the charging battery. This application is solved charging device quick charge and is generated heat serious problem.

Description

Charging device and mobile terminal

Technical Field

The application relates to the technical field of charging, in particular to a charging device and a mobile terminal.

Background

Along with the development of the intelligent mobile terminal industry, the battery capacity of the mobile terminal is larger and larger, the charging time for charging by using the conventional charging device is correspondingly longer and longer, and the long charging time brings inconvenience to consumers. In order to improve the charging speed, a quick charging function is needed, the charging is carried out in a quick charging or super quick charging mode, the charging temperature is high, the loss is large, the safety is low, and the requirements of users cannot be met.

Content of application

The application mainly aims to provide a charging device and a mobile terminal, and aims to solve the problem that the charging device generates heat seriously.

To achieve the above object, the present application provides a charging device, including:

the electric connector is used for connecting a charging power supply;

a rechargeable battery; and the number of the first and second groups,

the input ends of the at least two charging charge pumps are connected with the electric connector, and the output ends of the at least two charging charge pumps are connected with the rechargeable battery; wherein the content of the first and second substances,

each charging charge pump is used for converting the power supply of the charging power supply accessed by the electric connector and outputting the converted power supply to the rechargeable battery so as to charge the rechargeable battery.

Optionally, the charging power supply charges the rechargeable battery through at least one of at least two charging charge pumps;

the charging device further comprises a switch charging chip, and a main charging charge pump of the switch charging chip is connected with at least two charging charge pumps in parallel.

Optionally, the charging device further comprises:

microcontroller, microcontroller respectively with at least two charge pump with the switch chip that charges is connected, microcontroller is used for output control signal to every charge pump with the switch chip that charges, in order to control charge pump with the work of switch chip that charges.

Optionally, the microcontroller is also electrically connected with an external charger through the electrical connector;

the microcontroller is further used for acquiring the type of the external charger and controlling the charging charge pump and the switch charging chip to work when the external charger is determined to support the charging of the charging charge pump according to the type of the external charger; and the number of the first and second groups,

and when the external charger does not support the charging of the charging charge pump according to the type of the external charger, controlling the switch charging chip to work.

Optionally, the charging device further comprises:

the acquisition end of the battery parameter acquisition circuit is electrically connected with the rechargeable battery, and the output end of the battery parameter acquisition circuit is connected with the signal feedback end of the microcontroller; wherein the content of the first and second substances,

the battery parameter acquisition circuit is used for acquiring the current/voltage of the charged battery and outputting a corresponding current/voltage acquisition signal;

the microcontroller is also used for controlling the charge pump and the switch charging chip to work according to the current/voltage acquisition signal.

Optionally, the microcontroller is specifically configured to:

when the voltage of the rechargeable battery is determined to be smaller than a first preset voltage according to the current/voltage acquisition signal, controlling the switch charging chip to work so as to charge the rechargeable battery through the switch charging chip;

when the battery voltage is greater than or equal to the first preset voltage, controlling at least two charging charge pumps to work so as to charge the rechargeable battery through the charging charge pumps; and the number of the first and second groups,

and when the battery voltage is greater than or equal to a second preset voltage, controlling the switch charging chip to work so as to charge the rechargeable battery through the switch charging chip.

Optionally, the battery parameter acquisition circuit is further configured to acquire the temperature of the rechargeable battery and output a corresponding temperature acquisition signal;

the microcontroller is further specifically configured to:

and generating corresponding control strategies according to the temperature acquisition signals and the current/voltage acquisition signals so as to control the charge pumps with corresponding quantity to work.

Optionally, the control strategy includes:

controlling one of the charge pumps to work; and the number of the first and second groups,

and controlling at least two charge pumps to work simultaneously and/or in a time-sharing manner.

Optionally, at least two of the charge pumps comprise:

a main charge pump;

and the signal synchronization control end of the main charging charge pump is connected with the signal synchronization controlled end of at least one slave charging charge pump.

Optionally, when the charging power supply charges the rechargeable battery through one of the at least two charging charge pumps, the charging charge pump that charges the rechargeable battery is the main charging charge pump or any one of the at least two charging charge pumps;

when the charging power supply charges the rechargeable battery through at least two of the at least two charging charge pumps at the same time, one of the at least two charging charge pumps for charging the rechargeable battery is a main charging charge pump.

Optionally, when the charging power supply charges the charging battery through the master charging charge pump and at least one of the slave charging charge pumps simultaneously, the master charging charge pump outputs a synchronization control signal to the slave charging charge pump to control the switching frequency of the slave charging charge pump to be synchronized with the switching frequency of the master charging charge pump.

Optionally, the charging device further includes at least two charging controllers, each of the charging controllers is disposed in series between the electrical connector and one of the charge pumps;

each charge controller is used for controlling on/off between the corresponding charge pump and the electric connector.

Optionally, the charging device further comprises:

the electric connector and at least one of the two charge pumps are arranged on the first electric control board;

and the rest of the at least two charge pumps are arranged on the second electric control board.

Optionally, the charging device further comprises:

the first conductive piece is used for connecting the first electric control board and the rechargeable battery;

and the second conductive piece is used for connecting the second electric control board and the rechargeable battery.

And the third conductive piece is used for connecting the first electric control board and the second electric control board.

Optionally, the charging device further comprises: the input end of the power supply charge pump is respectively connected with the switch charging chip and the charging charge pump, and the output end of the power supply charge pump is connected with the power supply end of the microcontroller;

and the power supply charge pump is used for supplying power to the microcontroller.

The application also provides a mobile terminal, which comprises the charging device.

This application collocation two electric core rechargeable battery of establishing ties to establish ties the charge pump that sets up at least two parallelly connected settings between electric connector and rechargeable battery, and each charge pump that charges can with the charging source that electric connector inserts carries out output to rechargeable battery after the power conversion, in order to charge rechargeable battery. This application can shunt through parallelly connected charge pump that charges to reduce the electric current of the charge pump that charges of flowing through, thereby reduce the heat dissipation of every charge pump that charges, be favorable to reducing charging device's heat, this application is realizing faster charge speed, has reduced charge pump calorific capacity and has improved the radiating efficiency simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic hardware structure diagram of a mobile terminal implementing various embodiments of the present application;

fig. 2 is a communication network system architecture diagram according to an embodiment of the present application;

fig. 3 is a schematic circuit diagram of a charging device according to a first embodiment of the present application;

fig. 4 is a schematic circuit diagram of a charging device according to a second embodiment of the present application;

fig. 5 is a schematic circuit diagram of a charging device according to a third embodiment of the present application;

fig. 6 is a schematic circuit diagram of a charging device according to a fourth embodiment of the present application;

fig. 7 is a schematic circuit diagram of a charging device according to a fifth embodiment of the present application.

The reference numbers illustrate:

the implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings. With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

Alternatively, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the recitation of an element by the phrase "comprising an … …" does not exclude the presence of additional like elements in the process, method, article, or apparatus that comprises the element, and optionally, identically named components, features, and elements in different embodiments of the present application may have different meanings, as may be determined by their interpretation in the embodiment or by their further context within the embodiment.

It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope herein. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context. Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. 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, steps, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, steps, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions, steps or operations are inherently mutually exclusive in some way.

It should be understood that, although the steps in the flowcharts in the embodiments of the present application are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least a portion of the steps in the figures may include at least two sub-steps or at least two stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed sequentially, but may be performed alternately or at least partially with other steps or sub-steps of other steps.

Optionally, step numbers such as S100 and S200 are used herein for the purpose of more clearly and briefly describing the corresponding content, and do not constitute a substantial limitation on the sequence, and those skilled in the art may perform S100 and then S200, or may perform S200 and then S100, etc. in the specific implementation, but these shall be within the protection scope of the present application.

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for the convenience of description of the present application, and have no specific meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.

The mobile terminal may be implemented in various forms. For example, the mobile terminal described in the present application may include mobile terminals such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and fixed terminals such as a Digital TV, a desktop computer, and the like.

The following description will be given taking a mobile terminal as an example, and those skilled in the art will understand that the configuration according to the embodiment of the present application can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present application, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. Alternatively, the radio frequency unit 101 may also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CD-a2000(Code Division Multiple Access 2000), WCD-a (Wideband Code Division Multiple Access), TD-SCD-a (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division multiplexing-Long Term Evolution, TDD-Long Term Evolution), and the like.

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is optional and not necessarily constituent of the mobile terminal, and may be omitted entirely as needed within a scope that does not change the essence of the application.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics microcontroller 1041 Processing image data of still pictures or video obtained by an image capture device (e.g., a charging circuit) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic microcontroller 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor that may adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Alternatively, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. Optionally, the touch detection device detects a touch orientation of a user, detects a signal caused by a touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. Alternatively, the touch panel 1071 may be implemented in various types, such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited thereto.

Alternatively, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or at least two elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a program storage area and a data storage area, and optionally, the program storage area may store an operating system, an application program (such as a sound playing function, an image playing function, and the like) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Optionally, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or at least two processing units; optionally, the processor 110 may integrate an application microcontroller and a modem microcontroller, optionally, the application microcontroller primarily handles operating systems, user interfaces, application programs, and the like, and the modem microcontroller primarily handles wireless communications. Alternatively, the modem microcontroller may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and optionally, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to implement functions of managing charging, discharging, and power consumption via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to facilitate understanding of the embodiments of the present application, a communication network system on which the mobile terminal of the present application is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present disclosure, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Optionally, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Alternatively, the eNodeB2021 may be connected with other enodebs 2022 through a backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. Optionally, the MME2031 is a control node that handles signaling between the UE201 and the EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present application is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

The application provides a charging device, charging device can be applicable to cell-phone, panel computer, audio amplifier, game machine, intelligent wearing equipment, like in mobile terminal equipment such as intelligent bracelet, intelligent wrist-watch, charging device is arranged in giving mobile terminal's rechargeable battery 20, for example the battery charges to make rechargeable battery 20 can supply power for the load in the mobile terminal equipment, for example main control board, display screen, camera, speaker etc..

The switch charging scheme is suitable for charging below 18W and is not suitable for 160W charging, so the scheme adopts a charge pump scheme with high efficiency in topology and selection, and the charge pump scheme is divided into a single-cell scheme, a multi-cell parallel scheme and a multi-cell series scheme. The charging scheme of the single-cell charge pump belongs to high voltage and low current, the output power of the charger is about 10V/16A, and the charging scheme has the advantages of simple circuit and the following disadvantages: the charging cable and the charging interface need to be customized, so that the cost is high; the single battery cell 32A has current, the battery cell generates heat seriously, and the charging time is influenced; the battery protection board has higher requirements on components, and the protection board generates heat seriously, so that the temperature rise of the whole machine is increased. The double-cell parallel charging scheme is similar to the single-cell charging scheme, a customized TYPE C interface and a charging wire exist, and the battery protection board generates heat seriously. Above-mentioned two kinds of schemes, though can realize quick charge, nevertheless the charging temperature is higher, and the loss is great, and the security is not high, can't satisfy user's demand.

In order to solve the above problem, referring to fig. 3 to 6, in an embodiment of the present application, the charging device includes:

the electric connector 10 is used for connecting a charging power supply;

a rechargeable battery 20; and the number of the first and second groups,

at least two charging charge pumps 30 arranged in parallel, wherein the input ends of at least two charging charge pumps 30 are connected with the electric connector 10, and the output ends of at least two charging charge pumps 30 are connected with the rechargeable battery 20; wherein the content of the first and second substances,

each of the charge pumps 30 is configured to convert a charging power source connected to the electrical connector 10 and output the converted charging power source to the rechargeable battery 20, so as to charge the rechargeable battery 20.

Optionally, the electrical connector 10 may be a USB interface, or may also be a Type-C interface, where the Type-C interface and the USB interface both have a power end and a data end, where the power end is mainly used to provide power, and the data end is mainly used to transmit data signals, that is, to transmit communication information with the mobile terminal. The electrical connector 10 may further include a ground terminal, and the power terminal and the ground terminal are electrically connected to an external charger, respectively. The power supply end of the electrical connector 10 is connected to the power supply output end of the external charger and the power supply input end of each charge pump 30, so that when the external charger charges the mobile terminal, the charging circuit of the charging device outputs the electric energy to the power supply input end of the charge pump 30 through the power supply end, and the charge pump 30 performs power supply conversion and outputs the electric energy to the rechargeable battery 20, thereby realizing the storage of the electric energy. The data terminal comprises a first data pin represented by D + and a second data pin represented by D-in the USB interface, and comprises a CC terminal in the Type-C interface. The data terminal can realize the bidirectional interaction of signals between the mobile terminal and the external charger, the mobile terminal can send a charging request to the charging device through the data terminal, so that the external charger provides corresponding charging electric energy to the mobile terminal according to the charging request, and in the charging process, the mobile terminal can also send a charging condition to the external charger, so that the external charger adjusts output voltage, output current and the like according to the charging condition.

The rechargeable battery 20 may be implemented by a rechargeable battery 20 such as a lithium battery, the rechargeable battery 20 includes at least two cells connected in series, and the capacity of the rechargeable battery 20 is adjusted according to a product to which the charging device is applied.

The charge pump is used as a non-inductance DC-DC converter, can utilize a capacitor as an energy storage element to convert voltage and current, can realize half reduction of output voltage and double output current, and is favorable for reducing heating during high-voltage quick charging. In addition, because the charge pump can realize that the input current is half of the output current, so relative to the low-voltage direct charging scheme, need not to customize specific charging cable and interface that charges, can reduce the cost of wire rod and interface. When the charge pump works in a charge mode, the internal switch tubes are always in an alternate switching state, so that energy provided by the adapter is transferred to the battery, and optionally, when the charge pump works in a steady state, the input voltage is slightly higher than two times of the battery voltage, and the maximum charging current can be supported to 8A.

The parallel charge pumps 30 can work independently, that is, the charging power source can charge the rechargeable battery 20 through one charge pump 30 of at least two charge pumps 30. The rechargeable battery 20 can also be charged by two or even at least two of the at least two charge pumps 30, and the selection can be made according to the current/voltage of the rechargeable battery 20. The number of the charge pumps may be two, or may be more than two, for example, three, four, etc., each charge pump 30 may be implemented by using circuits, chips, etc. with the same structure, and in a specific embodiment, each charge pump 30 may be a high-voltage 4:2 step-down charge pump. The working voltage of the 4:2 step-down charge pump is 20V, each charge pump 30 is connected in parallel and then connected in series between the electrical connector 10 and the rechargeable battery 20, so that the input voltage of the electrical connector 10 can be 20V, and the charge pumps 30 connected in parallel can be shunted, so that the current of the charging power supply connected to the electrical connector 10 is shunted to each charge pump 30, thereby avoiding the overload and overheat of the charge pump caused by large current, and reducing the heat dissipation of the charging device. The charging device can be applied to a high-power charging system with more than 100W, so as to realize the charging efficiency of 160W, for example, three charge pumps in at least two charge pumps work simultaneously, the input voltage/input current is 20V/8A, the power provided by the charger is 20X 8-160W, and after the input current is shunted by the three charge pumps in parallel, the 8A current is divided into three 2.63A currents. The current shared by each charge pump is about 2.63A, the charger output power of 20V/8A is converted into 10V/5.3A through voltage reduction of each parallel charge pump, then the combined current is converted into 10V 16A which is 160W, and the combined current is output to two batteries connected in series and enters the batteries, so that each charge pump only needs to convert about 20V/2.63A power of 53W, namely the power shared by each charge pump in the three charge pumps is 53W, and at the moment, the heat loss power of each chip is 0.57W, and therefore the internal temperature rise of the terminal equipment can be controlled to be slow. Of course, in other embodiments, charging of power of 50W, 100W, and the like may also be implemented, and specifically, the selection may be performed according to the power accessed by the charger, the current charging capacity of the battery, and the like, which is not limited herein. The scheme of the double-cell series charge pump is adopted to realize 160W quick charge. The double-cell series charging scheme belongs to high-voltage low current, the charger outputs 20V/8A of power, the cable current of the scheme is small, and a standard type C cable can be used; the battery core is overcurrent 16A, the battery core is low in heating, and the specification and the heating quantity of the battery protection plate device are lower than those of the parallel connection and single-battery-core scheme.

Based on this, compared with the scheme that a charging interface and a charging wire need to be customized in single-cell and multi-cell parallel connection, and the battery protection board generates heat seriously, the charging battery 20 with two cells connected in series is matched, at least two charging charge pumps 30 connected in parallel are connected in series between the electric connector 10 and the charging battery 20, and each charging charge pump 30 can convert the power supply of the charging power supply connected to the electric connector 10 and then output the converted power supply to the charging battery 20 so as to charge the charging battery 20. This application can shunt through parallelly connected charge pump 30 that charges to reduce every charge pump 30's heat dissipation of charging, be favorable to reducing charging device's heat, this application is realizing faster charging speed, has reduced charge pump calorific capacity and has improved the radiating efficiency simultaneously.

Referring to fig. 3 to 6, in an embodiment, at least two of the charge pumps 30 include:

a main charge pump 31;

and the at least one slave charge pump 32 is arranged in parallel with the master charge pump 31, and a signal synchronization control end of the master charge pump 31 is connected with a signal synchronization controlled end of the at least one slave charge pump 32.

Further, when the charging power source charges the rechargeable battery 20 through the master charging charge pump 31 and at least one slave charging charge pump 32 simultaneously, the master charging charge pump 31 outputs a synchronization control signal to the slave charging charge pump 32 to control the switching frequency of the slave charging charge pump 32 to be synchronized with the switching frequency of the master charging charge pump 31.

Optionally, when the master charge pump 31 and the slave charge pump 32 operate simultaneously, the master charge pump 31 controls the slave charge pump 32 to operate synchronously, that is, the slave charge pump 32 operates following the switching frequency of the master charge pump 31, wherein the master charge pump 31 synchronizes the switching frequency of the two slave charge pumps 32 through a Sync signal, so that the operating phases of the two slave charge pumps are consistent, thereby reducing the ripple and capacitance requirements of the input voltage.

Referring to fig. 3 to 6, in an embodiment, when the charging power supply charges the rechargeable battery 20 through one of at least two charging charge pumps 30, the charging charge pump 30 that charges the rechargeable battery 20 is the main charging charge pump 31 or any one of the charging charge pumps 30;

when the charging power supply charges the rechargeable battery 20 through at least two of the at least two charging charge pumps 30 at the same time, one of the at least two charging charge pumps 30 that charges the rechargeable battery 20 is the main charging charge pump 31.

Optionally, at least two charge pumps 30 may operate simultaneously or not, specifically, when the mobile terminal is charging, only one charge pump 30 may be activated at a time to charge according to a charging requirement and a charging/charging voltage that can be provided by the charger, and this charge pump 30 may be the master charge pump 31 or the slave charge pump 32. Or, when at least two charge pumps 30 are required to participate in charging simultaneously, a corresponding control strategy is generated according to the charging requirement and the charging/charging voltage that can be provided by the charger, and the at least two charge pumps 30 are controlled to perform charging in a simultaneous and/or time-sharing manner. For example, two or more charge pumps 30 are periodically charged at a certain on/off operating frequency in each charging cycle. When more than two charge pumps 30 are simultaneously operated at the same time, one charge pump 30 is the master charge pump 31, and the other charge pumps 30 are the slave charge pumps 32. In this process, the master charge pump 31 controls the slave charge pump 32 to operate synchronously, that is, the slave charge pump 32 operates according to the switching frequency of the master charge pump 31, so as to reduce the ripple and the capacitance requirement of the input voltage.

Referring to fig. 6, in an embodiment, the charging device further includes:

the first electronic control board 40, the electrical connector 10 and at least one charge pump 30 of at least two charge pumps 30 are disposed on the first electronic control board 40;

and the second electronic control board 50, and at least two charge pumps 30 in the rest charge pumps 30 are arranged on the second electronic control board 50.

Optionally, the first electronic control board 40 assists the electronic control board, which may be an electronic control board used for fixing and installing the power supply connector 10 in the mobile terminal, the second electronic control board 50 may be a main control board, which may be a power supply board or a main control board of the mobile terminal, the first electronic control board 40 is provided with the power supply connector 10 and other interface circuits, the charging charge pump 30 disposed on the first electronic control board 40 may be electrically connected to the power supply connector 10 through a circuit wiring layer disposed on the first electronic control board 40, and the routing between the power supply connector 10 and the charging charge pump 30 disposed on the first electronic control board 40 is short, so that loss of electric energy on the routing (the routing has impedance) can be reduced, and loss of the charging device itself can be reduced. The remaining part of the charge pumps 30 are disposed on the second electronic control board 50, wherein the main charge pump 31 may be disposed on the second electronic control board 50, and the charge pumps 30 disposed on the second electronic control board 50 may be electrically connected to each other through a circuit wiring layer disposed on the second electronic control board 50. In a specific embodiment, the number of the charge pumps 30 is three, the three charge pumps 30 are respectively a master charge pump and 2 slave charge pumps 32, and the master board is placed on the master charge pump 31 and one slave charge pump 32, and the small board is placed on the other slave charge pump because the second electronic control board 50 has a larger area and better heat dissipation.

This application is located charge pump 30 branch on first automatically controlled board 40 and the automatically controlled board 50 two automatically controlled boards of second, forms two scattered heat sources, is favorable to the heat dissipation of dispersion charge pump 30 to solve the heat source concentration on the automatically controlled board, lead to automatically controlled board heat dissipation untimely, influence mobile terminal's normal work, even burn out mobile terminal's problem when serious. The first electronic control board 40 has fewer components, the second electronic control board 50 is provided with a charge pump, and may also be provided with a power supply circuit of the mobile terminal, such as a DC-DC module, a power management chip, or may also be provided with a microcontroller 80, such as an MCU, and the second electronic control board 50 has a size larger than that of the first electronic control board 40. The charge pump is arranged on the two electric control boards respectively, so that the size of a single electric control board, such as the second electric control board 50, can be reduced, the electric control boards are convenient to install in the shell of the mobile terminal, and the PCB layout of the electric control boards is simplified.

In other embodiments, the charge pump 30 disposed on the same electronic control board may be disposed on the same side of the electronic control board, or disposed on two opposite sides of the electronic control board. When the main charge pump 31 and the remaining slave charge pumps 32 are respectively disposed on two opposite sides of the electronic control board, the main charge pump 31 and the slave charge pumps 32 can be electrically connected through a circuit wiring layer and a conductive via on the electronic control board. Therefore, the size of the second electronic control board 50 can be further reduced, and the spatial distance between the charge pumps 30 can be further increased, which is beneficial to dispersing the heat source of the mobile terminal and improving the heat dissipation efficiency.

Referring to fig. 6, in an embodiment, the charging device further includes:

a first conductive member 61 for connecting the first electronic control board 40 and the rechargeable battery 20;

and a second conductive member 62 for connecting the second electronic control board 50 and the rechargeable battery 20.

And a third conductive member 63 for connecting the first electronic control board 40 and the second electronic control board 50.

Alternatively, the first conductive member 61 may be any one or a combination of cables and flexible circuit boards, and specifically, the first conductive member 61 and/or the second conductive member 62 are flexible circuit boards. The rechargeable battery 20 may further include a protection plate at one end of the battery cell, a battery protection circuit disposed on the protection plate to ensure charging safety, and a battery connector, such as a female connector. The first conductive member 61 can be electrically connected to the protection board in a pluggable manner through the battery connector, so that the slave charging charge pump 32 disposed on the first electronic control board 40 is electrically connected to the rechargeable battery 20 through the first conductive member 61. The second conductive element 62 can be electrically connected to the protection board in a pluggable manner through the battery connector, so that the main charge pump 31 and the slave charge pump 32 disposed on the second electronic control board 50 are electrically connected to the rechargeable battery 20 through the third conductive element 63. And electric control board connectors connected with each other, such as interface female seats, pin headers and the like, are further arranged between the first electric control board 40 and the second electric control board 50. The third conductive member 63 can be electrically connected to the first electronic control board 40 and the second electronic control board 50 by plugging, so that the slave charge pump 32 disposed on the first electronic control board 40 is connected to the master charge pump 31 through the third conductive member 63. Therefore, the first electric control board 40 and the second electric control board 50 are electrically connected through the third conductive member 63, which is beneficial to reducing the wiring design difficulty, and meanwhile, the wiring impedance connected with the charge pump 30 can be reduced, and the heat generation is reduced.

The charging charge pump 30 is arranged on the two electric control boards respectively, and the two electric conduction pieces, such as FPCs, are adopted to realize the electric connection between the electric control boards and the battery connectors respectively, so that the impedance caused by the temperature rise of the battery FPCs and the battery connectors on the main board side can be reduced. For example, the FPC impedance at the main board side is 5mR, and with the dual FPC structure, the overcurrent at the main board side is about 10.67A, and the loss is about 0.57W, and compared with the single FPC structure, the overcurrent is about 16A, and the loss is about 1.28W, and the power consumption is higher.

In other embodiments, when more than two charge pumps 30 need to be controlled to simultaneously supply power to the rechargeable battery 20, the charge pumps 30 respectively disposed on different electronic control boards may be selected to operate, for example, when two charge pumps 30 are needed to charge, a master charge pump 31 disposed on the second electronic control board 50 and one slave charge pump 32 disposed on the first electronic control board 40 may be used to operate. Since the two charge pumps 30 are electrically connected by different conductive members, the possibility of concentrated heat dissipation on the battery due to the connection of the two charge pumps 30 with the same battery connector can be reduced. In addition, the two charge pumps are respectively arranged on different electric control boards, so that the heat dissipation area can be increased, and the heat dissipation efficiency of the mobile terminal can be improved.

Referring to fig. 2 and 6, in an embodiment, the charging apparatus further includes a switching charging chip 70, and the switching charging chip 70 is configured to connect the main charging pump 31 and at least two of the charging pumps 30 in parallel.

Optionally, the switch charging chip 70 is configured to convert the electric energy output by the charging circuit of the charging device into electric energy required by the mobile terminal, and output the electric energy to the energy storage device of the mobile terminal for storage. Specifically, the switching charging chip 70 may perform DC-DC conversion, filtering, and the like on the electric energy output from the charging circuit of the charging device. Specifically, a power converter is integrated in the switch charging chip 70, and an input terminal of the power converter 35 is connected to a power transmission terminal of the electrical connector 10; and the power converter is used for outputting the electric energy of the external charger after power supply processing. The power converter is a BUCK type power converter or a BUCK-BOOST type power converter or a charge pump type power converter. The switch charging chip 70 can adjust the charging current and the charging voltage during charging, so that the charging of the rechargeable battery 20 can be in different stages. Optionally, the charging process of the switch charging chip 70 includes, but is not limited to, a pre-charging phase, a constant current charging phase, and a constant voltage charging phase. The pre-charge stage is used to pre-charge (recovery charge) the fully discharged battery cells, typically when the battery voltage is below about 3V. And a constant current charging stage, when the battery voltage rises to a preset charging threshold value, for example 3V, increasing the charging current to perform constant current charging. In the constant current charging stage, the battery voltage gradually rises along with the constant current charging process.

In an embodiment, the switch charging chip 70 and the charging charge pump 30 may work simultaneously or separately, and may be selected according to the type of the external charger, the battery level, and the like, without limitation.

Referring to fig. 3, in an embodiment, the charging device further includes:

microcontroller 80, microcontroller 80 respectively with at least two charge pump 30 with switch charging chip 70 is connected, microcontroller 80 is used for output control signal extremely every charge pump 30 with switch charging chip 70, in order to control charge pump 30 with switch charging chip 70 works.

Optionally, the microcontroller 80 may be a control center of the charging device, and is specially used for controlling charging of the mobile terminal, or may be a control center of the mobile terminal, when the microcontroller 80 is the control center of the charging device, the mobile terminal further includes a processor 101, and the microcontroller 80 and the processor 101 may be in communication connection. When the microcontroller 80 is a control center of the mobile terminal, the mobile terminal may further be connected to other terminals, such as a computer, through the electrical connector 1010, so as to transmit information such as audio, video, text, symbols, etc. while charging is performed. In the charging process, the charging charge pump 30 and the switch charging chip 70 work in different charging stages according to the control signal of the microcontroller 80, and thus the charging of the mobile terminal is completed.

Before and during charging, the microcontroller 80 is communicatively connected to a charger, such as a power adapter, a computer, a mobile power supply, etc., which can provide a charging power source, so as to realize signal interaction, such as a charging mode, a charging requirement, etc., of the mobile terminal device. Optionally, based on the charging protocol of the mobile terminal device, the mobile terminal device communicates with an external charger, such as a charging device, by sending a communication packet, such as an energy requirement packet, receiving an energy packet, a mobile terminal device ID packet, a version packet, a rated power packet, a charging instruction packet, and the like, and sends the above information to the charging device through the communication interface. The charging device may also output a charging device ID packet, a version packet, a transmission power packet, and the like to the mobile terminal. The data interface adopted by the communication can be the communication of a PD protocol on the CC signal of a type-C interface, and the mobile terminal and the power adapter in the communication mode need to use the type C interface or use a nonstandard interface; or the D + D-line in the USB cable (data line) is adopted for communication, the scheme has no requirement on the USB interface, the power adapter can adopt a standard TYPE-A port and a TYPE-C port, and the micro USB port and the TYPE-C port can be used on the side of the mobile terminal.

Referring to fig. 3, in one embodiment, the microcontroller 80 is also electrically connected to an external charger via the electrical connector 10;

the microcontroller 80 is further configured to obtain the type of the external charger, and control the charging charge pump 30 and the switching charging chip 70 to operate when it is determined that the external charger supports charging of the charging charge pump 30 according to the type of the external charger; and the number of the first and second groups,

and when the external charger does not support the charging of the charging charge pump 30 according to the type of the external charger, controlling the switch charging chip 70 to work.

Optionally, the charging device may further include a connection detection circuit, which may specifically be a voltage detection circuit, for example, a voltage detection circuit formed by a voltage dividing resistor, and the voltage detection circuit may detect a current voltage value of the electrical connector 10 connected to the external charger; the microcontroller 80 can identify the current peripheral interface type according to the current voltage value and the preset mapping relationship table between different voltage values and different interface types. It should be noted that when an external charger with a different communication interface is connected to the electrical connector 10, the voltage value detected by the voltage detection circuit may be different. Therefore, the corresponding relation between each interface type and the voltage value is predefined in the pre-stored mapping relation table, and the interface type corresponding to the actual voltage value can be searched in the mapping relation table subsequently, so that the current peripheral interface type is determined. In other embodiments, the electrical connector 10 may further be provided with an identification pin connection, and the connection detection circuit may determine whether to connect an external charger and the type of the connected external charger according to the level of the identification pin or the magnitude of the voltage.

The external charger is a power adapter, and after the connection between the mobile terminal and the power adapter is established under the working condition of mobile charging, the power adapter may send a charging parameter request, which may be a charging voltage and/or a charging current characterizing the mobile terminal, to the microcontroller 80 through the data interface. And the mobile terminal generates charging response information and sends the charging response information to the power adapter. After the power adapter receives the converted charging response information, the charging circuit of the power adapter may charge the mobile terminal according to the charging voltage and/or charging current confirmed in the charging response information. The power adapter may be a high-power adapter, and specifically may be a power adapter providing power of 50W or more, for example, 50W, 100W, 120W, 160W, and the like, and the power of the power adapter may provide a high-power output. Of course, the charging device may be a low-power adapter, which may provide an 18W power charger of 9V/2A, a 22.5W power adapter of 10V/2.25A, etc., and these power adapters may not provide a high-power output due to their limitations, and therefore, the charging of the charge pump 30 is not supported. In some embodiments, the external charger may also be an external charger such as a computer PC that can provide a 5V voltage output.

In order to improve the charging efficiency of the mobile terminal and avoid the mismatch between the input voltage/input current of the power supply and the charging device, in this embodiment, before charging, the microcontroller 80 is firstly in communication connection with the external charger to determine the type of the external charger, and determine the power supply capability of the external charger according to the type of the external charger, and the external charger can provide a high-power charging power supply, that is, when the charging charge pump 30 can be supported to charge, the charging charge pump 30 and the switching charging chip 70 can be controlled to operate simultaneously according to the charging requirement of the mobile terminal. When the external charger is not enough to provide a high-power charging power supply, that is, the charging of the charging charge pump 30 is not supported, only the switching charging chip 70 may be controlled to operate simultaneously according to the charging requirement of the mobile terminal, and at this time, the charging charge pump 30 is in a standby or sleep state and does not operate.

Referring to fig. 3, in an embodiment, the charging device further includes:

a battery parameter acquisition circuit (not shown), the acquisition end of which is electrically connected with the rechargeable battery 20, and the output end of which is connected with the signal feedback end of the microcontroller 80; wherein the content of the first and second substances,

the battery parameter acquisition circuit is used for acquiring the current/voltage of the rechargeable battery 20 and outputting a corresponding current/voltage acquisition signal;

the microcontroller 80 is further configured to control the charge pump 30 and the switch charging chip 70 to operate according to the current/voltage collecting signal.

Optionally, the battery parameter collecting circuit may include, but is not limited to, a voltage collecting circuit, a current collecting circuit, a battery temperature collecting circuit, and the like, wherein the voltage collecting circuit may be implemented by an electricity meter and the like, the current collecting circuit may be implemented by a sampling resistor and the like, and the battery temperature collecting circuit may be implemented by a temperature sensor such as a thermistor and a thermocouple. The battery parameter acquisition circuit can acquire various parameters of the battery in real time, and particularly can convert acquired current, voltage, temperature and the like into electric signals with sizes corresponding to the current, the voltage and the temperature in the processes of charging, discharging and the like. When the charging device works, the microcontroller 80 controls the charging charge pump 30 and the switch charging chip 70 to work according to the electric signal fed back by the battery parameter acquisition circuit, so that the health state of the charging device is improved.

Referring to fig. 3 and 6, in an embodiment, the microcontroller 80 is specifically configured to:

when the voltage of the rechargeable battery 20 is determined to be smaller than a first preset voltage according to the current/voltage acquisition signal, controlling the switch charging chip 70 to work so as to charge the rechargeable battery 20 through the switch charging chip 70;

when the battery voltage is greater than or equal to the first preset voltage, controlling at least two of the charge pumps 30 to operate, so as to charge the rechargeable battery 20 through the charge pumps 30; and the number of the first and second groups,

and when the battery voltage is greater than or equal to a second preset voltage, controlling the switch charging chip 70 to work so as to charge the rechargeable battery 20 through the switch charging chip 70.

Optionally, after the external charger is connected to the mobile terminal and communicates with the mobile terminal, the mobile terminal may obtain the current power information of the rechargeable battery 20, that is, the battery voltage/battery current, when it is determined that the external charger can support the charging charge pump 30 to supply power. When it is determined that the current charge of the rechargeable battery 20 is too low and is lower than a certain threshold, for example, the charge is 0 or close to 0, the switching charging chip 70 and the charging charge pump 30 participate in battery charging at the same time, and in the pre-charging phase of the battery, that is, less than the first preset voltage phase, the microcontroller 80 may first enable the switching charging chip 70 to pre-charge the rechargeable battery 20, so as to perform recovery charging on the fully discharged battery. When the battery voltage is charged to be greater than or equal to the first preset voltage, the switch charging chip 70 may be controlled to stop charging the rechargeable battery 20, and the charge pump 30 may be controlled to charge the rechargeable battery 20 with a large current (relative to the pre-charge stage), and at this time, the battery may be charged with a constant current by the charge pump, so that the power loss may be reduced, and the efficiency of the charge pump may be improved. When the battery current approaches the protection, the charge pump 30 may be controlled to stop charging, and the switch charging chip 70 may be controlled to resume charging, so as to trickle charge (or be referred to as cut-off charging) the battery.

When the external charger is connected to the mobile terminal, the battery has sufficient electric quantity, that is, the battery is between the first preset voltage and the second preset voltage, and the charging charge pump 30 can be directly controlled to charge when the restorable charging is not required.

This application adopts the charging device who corresponds to charge for the battery at the different electric quantity stages of battery, can make the charge pump on the basis of steady voltage output, improves charge pump efficiency, reduces current consumption. The charge pump can bear larger charging current due to higher charging efficiency, and the switch charging chip 70 can play a role in maintaining constant-voltage charging as a supplement, so that the charging device in the embodiment of the application can have stronger universality while realizing quick charging of the battery 20 to be charged, for example, the charging device can support various types of power adapters.

and determining the current/voltage value of the rechargeable battery 20 according to the current/voltage acquisition signal, and generating a corresponding control strategy to control the operation of a corresponding number of the rechargeable charge pumps 30.

Wherein the control strategy comprises:

controlling one of the charge pumps 30 to operate; and the number of the first and second groups,

at least two of the charge pumps 30 are controlled to operate simultaneously.

Alternatively, when the charging charge pump 30 charges the rechargeable battery 20, the number of the charging charge pumps 30 may be determined according to the battery capacity, that is, at least two charge pumps may charge the rechargeable battery 20 completely or partially, and only one charging charge pump 30 is activated to charge, where the charging charge pump 30 may be the master charging charge pump 31 or the slave charging charge pump 32. When more than one charge pump 30 charges the rechargeable battery 20 at the same time, the active charge pump 30 at least comprises a main charge pump 31, and the main charge pump 31 controls the switching frequency of the slave charge pump 32 to follow the main charge pump 31. The charge pump 30 may also operate in a time-sharing manner, for example, in an embodiment where the charge pump 30 includes a master charge pump 31 and two slave charge pumps 32, three charge pumps 30 may alternately operate at a duty ratio of 30%.

In an embodiment of controlling at least two of the charge pumps 30 to operate simultaneously, the number of the charge pumps 30 that operate may also be determined according to the temperature of the rechargeable battery 20, for example, when the temperature of the battery cell acquired by the battery parameter acquisition circuit is lower than the overheat protection threshold, the charge pump 30 continues to maintain the current control strategy, and when the current battery capacity reaches the overheat protection threshold, the charge pumps 30 that are operating may be controlled to stop operating one by one until the temperature of the battery cell returns to be lower than the overheat protection threshold, and then the charge pump 30 that stops operating is controlled to resume operating, or the charge pump 30 is controlled to resume operating one by one.

Or, when the current battery power reaches the overheat protection threshold, the charging charge pump 30 that is operating may be controlled to intermittently operate in turn at a preset period to reduce the charging power of the battery until the temperature of the battery cell is recovered to be lower than the overheat protection threshold, and then the charging charge pump 30 is controlled to recover the control strategy before the overheat protection.

According to the application, the charge pump 30 can be controlled to work in turn, so that a heat source in dynamic distribution is formed in the body of the terminal equipment, the temperature of the terminal equipment is high in the charging process, and the charging safety of the terminal equipment is guaranteed.

In another embodiment, the working state of the charge pump 30 can be selected between normal working and over-temperature protection by collecting the temperature of the charge pump 30, which is specifically referred to the above embodiments and is not described herein again, and the heat generated when the three charge pumps 30 work simultaneously can be reduced in this application.

It can be understood that, in at least two charge pumps 30, each charge pump 30 is controlled by the microcontroller 80, and may operate independently, or may operate in a master-slave manner, that is, in a manner that the master charge pump 31 controls the slave charge pump 32 to operate, which may be specifically selected according to actual conditions.

Referring to fig. 3 and 6, in an embodiment, the charging device further includes:

an I2C bus, at least two of the charge pumps 30 being electrically connected to the microcontroller 80 via the I2C bus, respectively.

Optionally, an I2C bus is connected to each charge pump 30 and the microcontroller 80, respectively, and the microcontroller 80 can enable each charge pump 30 through an I2C bus, where the I2C bus includes a first port and a second port, the first port is a data signal terminal SDA1 of the I2C bus, and the second port is a time signal terminal SCL1 of the I2C bus. That is, each charge pump 30 can be controlled by the charge pump 30 to operate independently, and when at least two charge pumps 30 operate simultaneously, the slave charge pump 32 is also controlled by the master charge pump 31 to synchronize the switching frequency of each charge pump 30, so that the phases of the charge pumps 30 are the same.

Referring to fig. 6, in an embodiment, the charging device further includes: a power supply charge pump 33, an input end of the power supply charge pump 33 is respectively connected with the switch charging chip 70 and the charging charge pump 30, and an output end of the power supply charge pump 33 is connected with a power supply end of the microcontroller 80;

the power supply charge pump 33 is used for supplying power to the microcontroller 80.

Alternatively, the power supply charge pump 33 may be a 2:1 type step-down charge pump, the power supply charge pump 33 is connected in series between the switching charging chip 70 and the power supply terminal of the microcontroller 80, and between each charging charge pump 30 and the power supply terminal of the microcontroller 80, and the power supply charge pump 33 is used for supplying power to the microcontroller 80 online when the charging device charges the rechargeable battery 20. At this time, the rechargeable battery 20 does not output power, and the rechargeable battery 20 is prevented from being discharged while being charged. In other embodiments, other loads are further disposed in the mobile terminal device, for example, other functional circuits on the main control board, a display screen, a camera, a speaker, and the like, and the power supply charge pump 33 may be further connected to the loads, so that when the charging device charges the rechargeable battery 20, power may be supplied to the loads through the power supply charge pump 33.

Referring to fig. 7, in an embodiment, the charging device further includes at least two charging controllers 90, each charging controller 90 is disposed in series between the electrical connector 10 and one of the charge pumps;

each of the charge controllers 90 is configured to control on/off between the corresponding charge pump and the electrical connector 10.

Alternatively, the charging controller 90 may be an impedance matching circuit, and may specifically be a switching circuit, such as a MOS transistor, an IGBT, or the like. The charge controller 90 may be disposed on the first electronic control board 40, and controlled by the microcontroller 80 to conduct in different degrees, so as to solve the problem that the connection length between the charge pump 30 disposed on the first electronic control board 40 and the electrical connector 10 is short, and the connection length between the charge pump 30 disposed on the second electronic control board 50 and the electrical connector 10 is long, due to the difference in distance between the charge pump 30 and the battery (for example, the lengths of the first conductive member 61 and the second conductive member 62 may be different), between the charge pump 30 and the electrical connector 10 connected in parallel. The position of the charge pump 30 on the electronic control board may cause the impedance of the charge pump to be different, which causes a temperature rise problem. The charging controller 90 may also be a current adjusting circuit, specifically, a switching circuit, such as a MOS transistor and an IGBT, which is controlled by the microcontroller 80 to conduct in different degrees, and the microcontroller 80 may specifically adjust the conducting degree according to the temperature of the motherboard, the temperature of the battery, and the temperature of the electrical connector 10.

The application also provides a mobile terminal comprising the charging device.

Optionally, based on that the mobile terminal includes the charging device as described above, the structure and the charging principle of the charging device of the mobile terminal are the same as those of the charging device described above, so that the mobile terminal includes all technical solutions of all embodiments of the charging device described above, and the achieved technical effects are also completely the same, and all effective effects of the charging device described above are achieved, which is not repeated herein.

Optionally, the mobile terminal further includes:

the charging device comprises a shell, wherein an electric connector 10 is arranged on the shell and used for installing the electric connector 10 of the charging device; the shell is also provided with an accommodating cavity;

the rechargeable battery 20 is accommodated in the accommodating cavity.

Alternatively, the electronic control board may be implemented by a PCB, the PCB is formed with a circuit wiring layer, and the electronic components of the charging device and other functional circuit modules in the mobile terminal are mounted on a pad formed by the circuit wiring layer. The housing and the display module can enclose to form an accommodating space, and the electric control board and the rechargeable battery 20 are accommodated in the housing. The electric control board of the charging device and the rechargeable battery 20 can be electrically connected through conductive members such as a wire and an FPC.

Alternatively, the microcontroller 80 in the charging device may be the processor 110 in the mobile terminal, and the mobile terminal of the present application implements the charging control of the mobile terminal based on the charging charge pump 30 in the charging device, and implements the communication connection between the mobile terminal and the external charger.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, a controlled terminal, or a network device) to execute the method of each embodiment of the present application.

The above description is only a preferred embodiment of the present application, and not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application, or which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.

Claims

1. A charging device, characterized in that the charging device comprises:

the electric connector is used for connecting a charging power supply;

a rechargeable battery; and the number of the first and second groups,

the charging device comprises at least two charging charge pumps which are connected, wherein the input ends of the charging charge pumps are connected with the electric connector, and the output ends of the charging charge pumps are connected with the rechargeable battery; wherein the content of the first and second substances,

the charging charge pump is used for converting the power supply of the charging power supply accessed by the electric connector and outputting the converted power supply to the rechargeable battery so as to charge the rechargeable battery.

2. The charging device of claim 1, wherein the charging power source charges the rechargeable battery via at least one charging charge pump;

3. A charging device as in claim 2, further comprising:

4. The charging device of claim 3, wherein the microcontroller is further electrically connected to an external charger via the electrical connector;

5. A charging arrangement as claimed in claim 3, further comprising:

6. A charging arrangement as claimed in claim 5, in which the microcontroller is specifically configured to:

7. The charging device of claim 5, wherein the battery parameter acquisition circuit is further configured to acquire a temperature of the rechargeable battery and output a corresponding temperature acquisition signal;

the microcontroller is further specifically configured to:

8. The charging apparatus of claim 7, wherein the control strategy comprises:

9. The charging device of claim 1, wherein at least two of the charge pumps comprise:

a main charge pump;

10. The charging apparatus as claimed in claim 9, wherein when the charging power source charges the rechargeable battery through one of at least two charging charge pumps, the charging charge pump charging the rechargeable battery is the main charging charge pump or any one of the charging charge pumps;

11. The charging apparatus of claim 10, wherein when the charging power source charges the charging battery through the master charge pump and at least one of the slave charge pumps simultaneously, the master charge pump outputs a synchronization control signal to the slave charge pump to control the switching frequency of the slave charge pump to be synchronized with the switching frequency of the master charge pump.

12. The charging device of claim 1, further comprising at least two charge controllers, each of the charge controllers being disposed in series between the electrical connector and a charge pump;

and the charging controller is used for controlling the on/off between the corresponding charge pump and the electric connector.

13. The charging device of claim 1, further comprising:

14. The charging device of claim 14, further comprising at least one of:

the second conductive piece is used for connecting the second electric control board and the rechargeable battery;

15. The charging device of claim 1, further comprising: the input end of the power supply charge pump is respectively connected with the switch charging chip and the charging charge pump, and the output end of the power supply charge pump is connected with the power supply end of the microcontroller;

16. A mobile terminal, characterized in that it comprises a charging device according to any one of claims 1 to 15.