WO2018054028A1 - 一种基于后盖式移动电源的无线充电装置、系统及其方法 - Google Patents

一种基于后盖式移动电源的无线充电装置、系统及其方法 Download PDF

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Publication number
WO2018054028A1
WO2018054028A1 PCT/CN2017/078410 CN2017078410W WO2018054028A1 WO 2018054028 A1 WO2018054028 A1 WO 2018054028A1 CN 2017078410 W CN2017078410 W CN 2017078410W WO 2018054028 A1 WO2018054028 A1 WO 2018054028A1
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WO
WIPO (PCT)
Prior art keywords
charging
back cover
type mobile
power source
cover type
Prior art date
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PCT/CN2017/078410
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English (en)
French (fr)
Inventor
吴泽威
童洪洁
刁志明
Original Assignee
捷开通讯(深圳)有限公司
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Application filed by 捷开通讯(深圳)有限公司 filed Critical 捷开通讯(深圳)有限公司
Priority to US15/740,347 priority Critical patent/US10164461B2/en
Priority to EP17811427.8A priority patent/EP3518371B1/en
Publication of WO2018054028A1 publication Critical patent/WO2018054028A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H02J7/025—
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
    • H04B5/24—Inductive coupling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/08—Current supply arrangements for telephone systems with current supply sources at the substations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to the field of charging technologies, and in particular, to a wireless charging device, system and method based on a back cover type mobile power source.
  • the wireless charging technology is becoming more and more mature, and will be the mainstream of the smart terminal charging method in the future.
  • a back cover type mobile power supply taking a mobile phone as an example, the appearance is similar to that of a mobile phone, and the output current interface is usually set at the bottom
  • the built-in back clip battery and control circuit cover the back cover type mobile power supply in the smart
  • the output current interface is directly inserted into the USB interface at the bottom of the smart terminal, and the power switch on the back cover type mobile power source can control whether the smart terminal is charged, without using a data line, and can be charged at any time without affecting the intelligent terminal. use.
  • the back cover type mobile power source also needs to be connected to the power source to charge itself, and the back side clip battery is fully charged before the smart terminal can be charged.
  • the user can only charge the back cover type mobile power source or the smart terminal separately, and can not charge the smart terminal while charging the back cover type mobile power source, and the charging efficiency is not high.
  • an object of the present invention is to provide a wireless charging device, a system and a method thereof based on a back cover type mobile power source, which are intended to solve the problem of charging a back cover type mobile power source at the same time.
  • Intelligent terminal charging, charging efficiency is not high.
  • a wireless charging method based on a back cover type mobile power source which comprises:
  • Step A When the wireless charger is powered on, the built-in induction coil is energized and generates an electromagnetic field;
  • Step B the back cover type mobile power source senses the electromagnetic field and generates current to the wireless charging device
  • Step C When the wireless charging device detects the current, the smart terminal and the back cover type mobile power source are controlled to enter a charging state; the charging current is respectively transmitted to the main battery of the smart terminal and the back cover type mobile power source for charging.
  • Step D When the wireless charging device detects no current, the smart terminal and the back cover type mobile power source are controlled to enter the power supply state, and the main battery of the smart terminal and the back cover type mobile power source are connected, and the back cover type mobile power source supplies power to the main power source.
  • Step E The back cover type mobile power source detects that the power on/off key is pressed, controls the wireless charging device to enter the single charging mode, and the wireless charging device charges the main battery according to the charging voltage output by the back cover type mobile power source.
  • a wireless charging device based on a back cover type mobile power source connected to a main battery and a back cover type mobile power source, comprising a power switching module, an MCU, a second charging module and a switch module;
  • the power switching module controls the MCU to enter a dual charging mode or a power supply mode according to an input state of a charging current transmitted by the back cover type mobile power source; the MCU controls the switching module to be disconnected in the dual charging mode, and controls the first charging module and the second charging The module respectively charges the power battery and the main battery; the MCU controls the switch module to be turned on in the power supply mode, and connects the back cover type mobile power source to the main battery, and the back cover type mobile power supply supplies power to the main power source.
  • a wireless charging system based on a back cover type mobile power source comprising a wireless charger, a back cover type mobile power source and an intelligent terminal;
  • the smart terminal is provided with a main battery and the wireless charging device;
  • the built-in induction coil When the wireless charger is powered on, the built-in induction coil is energized and generates an electromagnetic field; the back cover type mobile power source senses the electromagnetic field and generates current to the wireless charging device; when the wireless charging device detects the current, controls the smart terminal and The back cover type mobile power source enters a charging state, and the charging current is respectively transmitted to the main battery of the smart terminal and the back cover type mobile power source for charging.
  • the present invention provides a wireless charging device, a system and a method thereof based on a back cover type mobile power source
  • the wireless charging system includes a wireless charger, a back cover type mobile power source and an intelligent terminal; a battery and a wireless charging device; when the wireless charger is powered on, the built-in induction coil is energized and generates an electromagnetic field; the back cover type mobile power source senses the electromagnetic field and generates a current to the wireless charging device; the wireless charging device detects the current
  • the smart terminal and the back cover type mobile power source are controlled to enter the charging state, the charging current is respectively transmitted to the main battery of the smart terminal and the back cover type mobile power source for charging.
  • the smart terminal and the back cover type mobile power source can be simultaneously charged during wireless charging, thereby improving the charging efficiency. Therefore, the existing problem that the back cover type mobile power source is charged and the smart terminal cannot be charged and the charging efficiency is not high is solved.
  • FIG. 1 is a block diagram showing the structure of a wireless charging system provided by the present invention.
  • FIG. 2 is a schematic diagram of the circuit principle of the wireless charging system provided by the present invention.
  • FIG. 3 is a flow chart of a wireless charging method of a wireless charging system provided by the present invention.
  • the invention provides a wireless charging device, a system and a method thereof based on a back cover type mobile power source.
  • the power switching module Based on the wireless charging (electromagnetic induction method) technology of the intelligent terminal, the power switching module realizes a one-to-many charging scheme, that is, simultaneously The main battery and the back cover mobile power of the smart terminal perform efficient and safe charging.
  • the back cover type mobile power supply can supply power to the main power source when the charging is not enabled.
  • the wireless charging system based on the back cover type mobile power supply comprises a wireless charger 10, a back cover type mobile power source 20 and a smart terminal 30.
  • a wireless charging device 300 is provided in the smart terminal 30.
  • the back cover type mobile power source 20 is placed on the back of the smart terminal 30, and the back side of the back cover type mobile power source 20 is placed in the induction coil area of the wireless charger 10.
  • the wireless charger 10 is plugged in, the 220V AC power is converted into 5V DC power and the coil main board 110 (ie, the transmitting circuit with the induction coil) is energized, and the induction coil 120 is energized to generate an electromagnetic effect, and an electromagnetic field is generated outward.
  • the rear cover type mobile power source 20 senses the electromagnetic field and generates a current to the wireless charging device 300.
  • the wireless charging device 300 detects the current
  • the smart terminal 30 and the rear cover mobile power source 20 are controlled to enter a charging state, and the output charging current is respectively transmitted to the main battery 350 of the smart terminal 30 and the power supply of the rear cover type mobile power source 20.
  • the core 230 is charged.
  • the main battery 350 and the rear cover type mobile power source 20 of the smart terminal 30 can be simultaneously charged, thereby improving the charging efficiency.
  • the back cover type mobile power source 20 includes a wireless power source receiver 210, a first charging module 220, and a power source battery 230.
  • the specific connection relationship is shown in Figure 2.
  • the wireless power receiver 210 generates a current according to the induced electromagnetic field, and performs rectification and filtering adjustment on the current to output a charging current Vcharge.
  • the first charging module 220 controls the charging and discharging state of the power source battery 230 according to the signal output from the wireless charging device 300.
  • the smart terminal 30 and the rear cover mobile power source 20 are controlled to enter a power supply state, and the main battery 350 of the smart terminal 30 and the power battery core 230 of the rear cover type mobile power source 20 are connected.
  • the battery cell 230 supplies power to the main power source.
  • the wireless charging device 300 includes a power switching module 310 and an MCU. 320, a second charging module 330 and a switch module 340.
  • the specific connection relationship is shown in Figure 2.
  • the power switching module 310 controls the MCU according to the input state of the charging current Vcharge transmitted by the back cover type mobile power source 20. 320 enters dual charging mode or power mode.
  • the MCU 320 controls the first charging module 220 and the second charging module 330 to charge the power source battery 230 and the main battery 350, respectively, in the dual charging mode.
  • MCU The switch control module 340 is turned on in the power supply mode, and the power supply battery 230 is connected to the main battery 350 for power supply.
  • the wireless power receiver 210 can be a BQ51020 (model) of TI (Texas Instruments).
  • the switch module 340 is composed of a MOS transistor and peripheral circuits.
  • the wireless charging device 300 further includes a thermistor NTC that is coupled to the MCU for temperature control. Then, the MCU can also switch charging according to the temperature environment, such as charging the main battery 350 or the power battery 230 separately. If the charging is stopped, the corresponding output terminal is controlled to stop outputting the charging voltage VBUS, and the corresponding charging module is controlled to stop working. In the same way, the control method of starting charging can be obtained.
  • the wireless charging system works as follows:
  • the back cover type mobile power source 20 and the smart terminal 30 are simultaneously charged.
  • the wireless charger 10 is connected to the commercial power.
  • the inductive coil of the wireless power receiver 210 senses an electromagnetic field and generates a current.
  • the wireless power receiver 210 rectifies and filters the current, converts the electric energy into a DC power source, and outputs the charging current Vcharge to the power switching module 310 of the wireless charging device 300. .
  • the power switching module 310 is configured to implement charging switching, mainly when detecting a charging current Vcharge input through an I2C bus (SCL, SDA) and an MCU. 320 communication, output dual charge signal control MCU 320 enters dual charging mode.
  • the output charging voltage VBUS is transmitted to the first charging module 220 and the second charging module 330, respectively.
  • the power switching module 310 has two outputs (OUT1, OUT2, which output the same charging voltage VBUS). At this time, the corresponding charging module is not turned on and will not be charged.
  • the MCU 320 controls the switch module 340 to open, disconnecting the power supply cell 230 from the main battery 350.
  • MCU The 320 further communicates with the first charging module 220 and the second charging module 330 through the I2C bus (SCL, SDA), and outputs two open signals respectively to control the operation of the first charging module 220 and the second charging module 330, and the first charging module 220,
  • the second charging module 330 charges the power source battery 230 and the main battery 350 according to the input charging voltage VBUS. Thereby, the function of simultaneously charging the smart terminal and the back cover type mobile power source is realized.
  • the first charging module 220 and the second charging module 330 can be composed of a charging chip of the BQ24158 (model) of TI (Texas Instruments) and its peripheral circuits, and have over-voltage over-discharge protection, over-voltage and over-current protection of input and output, Short circuit protection and other functions.
  • MCU 320 is a microcontroller, which controls the entire charging process.
  • MTK5 Model of MTK (MediaTek) can be used.
  • the back cover type mobile power source 20 supplies power to the smart terminal 30.
  • the power switching module 310 detects no charging current Vcharge input, and passes I 2 .
  • the C bus (SCL, SDA) output power supply signal controls the MCU 320 to enter the power mode.
  • MCU The control switch module 340 is turned on to connect the power supply battery 230 to the main battery 350, thereby implementing the back cover type mobile power supply 20 to separately supply power to the smart terminal. At this time, it is not the charging mode, and the power supply battery 230 is used as the main battery 350, and the electric energy of the main power source is supplied from the original main battery 350 to be supplied to the power supply battery 230.
  • the back cover type mobile power source 20 charges the smart terminal 30.
  • the back cover type mobile power supply 20 further includes a control module, which is a prior art, that is, a function of charging the smart cover 30 by the existing back cover type mobile power source 20, that is, detecting a power switch on the back cover type mobile power source.
  • a control module which is a prior art, that is, a function of charging the smart cover 30 by the existing back cover type mobile power source 20, that is, detecting a power switch on the back cover type mobile power source.
  • the function of charging the smart terminal 30 by the back cover type mobile power source 20 is started.
  • This embodiment mainly describes how to perform charging after the power switching module is added.
  • the control module outputs a switching signal to the power switching module 310 to connect the first output terminal OUT1 of the power switching module 310 with the second output terminal OUT2.
  • the power switching module 310 controls the MCU 320 to enter the single charging mode by outputting a single charging signal through the I 2 C bus (SCL, SDA).
  • MCU The 320 control switch module 340 is disconnected to disconnect the power supply cell 230 from the main battery 350.
  • MCU 320 also passes I 2 The C bus (SCL, SDA) output discharge signal controls the first charging module 220 to acquire the charging voltage VBUS of the power supply cell 230 and transmit it to the power switching module 310, and also passes the I 2 The C bus output charging signal controls the second charging module 330 to operate.
  • the power switching module 310 outputs the charging voltage VBUS to the second charging module 330 through the first output terminal OUT1, and the second charging module 330 charges the main battery 350 according to the charging voltage VBUS.
  • the present invention further provides a wireless charging method.
  • the wireless charging method includes:
  • the built-in induction coil is energized and generates an electromagnetic field
  • the back cover type mobile power source senses the electromagnetic field and generates current to the wireless charging device
  • the control smart terminal and the back cover type mobile power supply enter the power supply state, and the main battery of the smart terminal and the back cover type mobile power source are connected, and the back cover type mobile power source supplies power to the main power source.
  • the wireless charging device When the back cover type mobile power source detects that the power switch key is pressed, the wireless charging device is controlled to enter the single charging mode, and the wireless charging device charges the main battery according to the charging voltage output by the back cover type mobile power source.
  • the present invention realizes a one-to-many charging scheme by switching the power switching module, and can simultaneously charge the main battery and the back cover mobile power of the smart terminal, and can also provide the back cover mobile power to the main power supply. Power is supplied (the back cover mobile power supply is equivalent to the main battery), and the existing functions are maintained.
  • the function of charging the smart terminal by the back cover type mobile power source saves the design cost on the intelligent terminal board, provides the charging efficiency and the endurance ability of the mobile phone, and is also provided with multi-level charging safety protection to ensure the safety during the charging process.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本发明公开了一种基于后盖式移动电源的无线充电装置、系统及其方法，无线充电系统包括无线充电器、后盖式移动电源和智能终端；智能终端内设置有主电池和无线充电装置；当无线充电器接通电源时，内置感应线圈通电并产生电磁场；后盖式移动电源感应到该电磁场并产生电流给无线充电装置；所述无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态，将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。这样即可在进行无线充电时，对智能终端和后盖式移动电源同时进行充电，提高了充电效率。从而解决了现有对后盖式移动电源充电的同时不能对智能终端充电，充电效率不高的问题。

Description

一种基于后盖式移动电源的无线充电装置、系统及其方法
【技术领域】
本发明涉及充电技术领域，尤其涉及的是一种基于后盖式移动电源的无线充电装置、系统及其方法。
【背景技术】
无线充电技术（电磁感应方式）日趋成熟，将是未来智能终端充电方式的主流。目前出现了一种后盖式移动电源（以手机为例，外观类似手机的后盖，通常在底部设置输出电流接口），其内置背夹电池和控制电路，将后盖式移动电源盖在智能终端的背面，输出电流接口直接插入智能终端底部的USB接口，按后盖式移动电源上的电源开关键即可控制是否对智能终端充电，无需使用数据线，能随时充电且不影响智能终端的使用。
但是，后盖式移动电源也需要接入电源对其自身充电，其背夹电池充满电后才能对智能终端充电。用户只能单独对后盖式移动电源或智能终端充电，对后盖式移动电源充电的同时不能对智能终端充电，充电效率不高。
因此，现有技术还有待于改进和发展。
【发明内容】
鉴于上述现有技术的不足之处，本发明的目的在于提供一种基于后盖式移动电源的无线充电装置、系统及其方法，旨在解决现有对后盖式移动电源充电的同时不能对智能终端充电，充电效率不高的问题。
本发明解决技术问题所采用的技术方案如下：
一种基于后盖式移动电源的无线充电方法，其中，包括：
步骤A、当无线充电器接通电源时，内置感应线圈通电并产生电磁场；
步骤B、后盖式移动电源感应到该电磁场并产生电流给无线充电装置；
步骤C、无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态；将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。
步骤D、无线充电装置检测无电流时，控制智能终端和后盖式移动电源进入供电状态，将智能终端的主电池和后盖式移动电源连接，后盖式移动电源对主电源供电。
步骤E、后盖式移动电源检测其电源开关键被按下时，控制无线充电装置进入单充电模式，无线充电装置根据后盖式移动电源输出的充电电压对主电池充电。
一种基于后盖式移动电源的无线充电装置，与主电池和后盖式移动电源连接，其包括电源切换模块、MCU、第二充电模块和开关模块；
所述电源切换模块根据后盖式移动电源传输的充电电流的输入状态控制MCU进入双充电模式或供电模式；MCU在双充电模式下控制开关模块断开、并控制第一充电模块和第二充电模块分别对电源电芯、主电池充电；MCU在供电模式下控制开关模块导通，将后盖式移动电源与主电池连接，后盖式移动电源对主电源供电。
一种基于后盖式移动电源的无线充电系统，其包括无线充电器、后盖式移动电源和智能终端；
所述智能终端内设置有主电池和所述的无线充电装置；
当无线充电器接通电源时，内置感应线圈通电并产生电磁场；后盖式移动电源感应到该电磁场并产生电流给无线充电装置；所述无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态，将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。
相较于现有技术，本发明提供的基于后盖式移动电源的无线充电装置、系统及其方法，无线充电系统包括无线充电器、后盖式移动电源和智能终端；智能终端内设置有主电池和无线充电装置；当无线充电器接通电源时，内置感应线圈通电并产生电磁场；后盖式移动电源感应到该电磁场并产生电流给无线充电装置；所述无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态，将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。这样即可在进行无线充电时，对智能终端和后盖式移动电源同时进行充电，提高了充电效率。从而解决了现有对后盖式移动电源充电的同时不能对智能终端充电，充电效率不高的问题。
【附图说明】
图1是本发明提供的无线充电系统的结构框图。
图2是本发明提供的无线充电系统的电路原理示意图。
图3是本发明提供的无线充电系统的无线充电方法流程图。
【具体实施方式】
本发明提供一种基于后盖式移动电源的无线充电装置、系统及其方法，基于智能终端的无线充电（电磁感应方式）技术，利用电源切换模块实现一对多的充电方案，即能同时对智能终端的主电池和后盖式移动电源进行高效安全充电。在充电不使能情况下，后盖式移动电源可对该主电源供电。为使本发明的目的、技术方案及优点更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
请同时参阅图1和图2，本发明提供的基于后盖式移动电源的无线充电系统包括无线充电器10、后盖式移动电源20和智能终端30。智能终端30内设置有无线充电装置300。将后盖式移动电源20盖在智能终端30的背面，再将后盖式移动电源20的背面放在无线充电器10的感应线圈区。当无线充电器10插上电源后，将220V的交流电转换为5V直流电并对线圈主板110（即带感应线圈的发射电路）通电，感应线圈120通电产生电磁效应，向外产生一个电磁场。根据电磁感应原理，后盖式移动电源20感应到该电磁场并产生电流给无线充电装置300。所述无线充电装置300检测到所述电流时控制智能终端30和后盖式移动电源20进入充电状态，输出充电电流分别传输给智能终端30的主电池350和后盖式移动电源20的电源电芯230进行充电。这样即可对智能终端30的主电池350和后盖式移动电源20同时进行充电，提高了充电效率。
本实施例中，所述后盖式移动电源20包括无线电源接收器210、第一充电模块220和电源电芯230。具体连接关系如图2所示。所述无线电源接收器210根据感应到的电磁场产生电流，对所述电流进行整流滤波调节后输出充电电流Vcharge。第一充电模块220根据无线充电装置300输出的信号控制电源电芯230的充放电状态。
所述无线充电装置300检测发现无电流时，控制智能终端30和后盖式移动电源20进入供电状态，将智能终端30的主电池350和后盖式移动电源20的电源电芯230连接，电源电芯230对主电源供电。
所述无线充电装置300包括电源切换模块310、MCU 320、第二充电模块330和开关模块340。具体连接关系如图2所示。电源切换模块310根据后盖式移动电源20传输的充电电流Vcharge的输入状态控制MCU 320进入双充电模式或供电模式。MCU 320在双充电模式下控制第一充电模块220和第二充电模块330分别对电源电芯230、主电池350充电。MCU 320在供电模式下控制开关模块340导通，将电源电芯230与主电池350连接进行供电。其中，所述无线电源接收器210可采用TI（德州仪器）的BQ51020（型号）。开关模块340由MOS管及外围电路组成。
进一步实施例中，所述无线充电装置300还包括热敏电阻NTC，其与MCU连接，用于实现温度管控。则MCU还可根据温度环境自行切换充电如单独给主电池350或电源电芯230充电。如停止充电，则控制对应的输出端停止输出充电电压VBUS，控制对应的充电模块停止工作。同理可得开始充电的控制方式。
请继续参阅图2，所述无线充电系统的工作原理为：
一、对后盖式移动电源20和智能终端30同时充电。
此时将无线充电器10接入市电。无线电源接收器210的电感线圈感应到电磁场并产生电流，无线电源接收器210对该电流进行整流滤波调节后，将电能转换成DC电源，输出充电电流Vcharge给无线充电装置300的电源切换模块310。
电源切换模块310用于实现充电切换，主要是检测到有充电电流Vcharge输入时，通过I2C总线（SCL、SDA）与MCU 320通讯，输出双充信号控制MCU 320进入双充电模式。并输出充电电压VBUS分别传输给第一充电模块220和第二充电模块330。电源切换模块310有两个输出端（OUT1、OUT2，输出相同的充电电压VBUS）。此时对应的充电模块还未开启，不会充电。
MCU 320控制开关模块340断开，使电源电芯230和主电池350之间断开连接。MCU 320还通过I2C总线（SCL、SDA）与第一充电模块220和第二充电模块330通讯，分别输出两路开启信号控制第一充电模块220和第二充电模块330工作，第一充电模块220、第二充电模块330根据输入的充电电压VBUS分别对电源电芯230、主电池350充电。从而实现给智能终端和后盖式移动电源同时充电的功能。
其中，这第一充电模块220和第二充电模块330可由TI（德州仪器）的BQ24158（型号）的充电芯片及其外围电路组成，具有过冲过放保护，输入输出的过压过流保护，短路保护等功能。MCU 320为微控制器，管控整个充电过程，可采用MTK（联发科）的MT6755（型号）。
二、后盖式移动电源20对智能终端30供电。
此时电源切换模块310检测无充电电流Vcharge输入，通过I 2 C总线（SCL、SDA）输出供电信号控制MCU 320进入供电模式。MCU 320控制开关模块340导通，将电源电芯230与主电池350连接，从而实现后盖式移动电源20单独给智能终端供电。此时不是充电模式，相当于将电源电芯230作为主电池350使用，主电源的电能由原来的主电池350提供变为电源电芯230提供。
三、后盖式移动电源20对智能终端30充电。
所述后盖式移动电源20还包括控制模块，其为现有技术，即实现现有的后盖式移动电源20对智能终端30充电的功能，即检测到后盖式移动电源上的电源开关键被按下时，开始执行后盖式移动电源20对智能终端30充电的功能。本实施例主要阐述增加电源切换模块后如何进行充电，此时控制模块输出切换信号给电源切换模块310将电源切换模块310的第一输出端OUT1与第二输出端OUT2连通。
电源切换模块310通过I 2 C总线（SCL、SDA）输出单充信号控制MCU 320进入单充电模式。MCU 320控制开关模块340断开，使电源电芯230和主电池350之间断开连接。MCU 320还通过I 2 C总线（SCL、SDA）输出放电信号控制第一充电模块220获取电源电芯230的充电电压VBUS并传输给电源切换模块310，还通过I 2 C总线输出充电信号控制第二充电模块330工作。
电源切换模块310将充电电压VBUS通过第一输出端OUT1输出给第二充电模块330，第二充电模块330根据充电电压VBUS对应主电池350进行充电。
基于上述的无线充电系统，本发明还提供一种无线充电方法，请参阅图3，所述无线充电方法包括：
S100、当无线充电器接通电源时，内置感应线圈通电并产生电磁场；
S200、后盖式移动电源感应到该电磁场并产生电流给无线充电装置；
S300、无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态；将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。
若无线充电装置检测发现无电流时，控制智能终端和后盖式移动电源进入供电状态，将智能终端的主电池和后盖式移动电源连接，后盖式移动电源对主电源供电。
后盖式移动电源检测其电源开关键被按下时，控制无线充电装置进入单充电模式，无线充电装置根据后盖式移动电源输出的充电电压对主电池充电。
综上所述，本发明通过电源切换模块的切换来实现一对多的充电方案，可实现同时对智能终端的主电池和后盖式移动电源充电，还能使后盖式移动电源给主电源供电（此时后盖式移动电源相当于主电池使用），也保持了现有的功能。后盖式移动电源对智能终端充电的功能，节省了智能终端主板上的设计成本，提供了充电效率和手机的续航能力；还设置有多级充电安全防护，确保了充电过程中的安全性。
应当理解的是，本发明的应用不限于上述的举例，对本领域普通技术人员来说，可以根据上述说明加以改进或变换，所有这些改进和变换都应属于本发明所附权利要求的保护范围。

Claims (11)

  1. 一种基于后盖式移动电源的无线充电方法，其中，包括：
    步骤A、当无线充电器接通电源时，内置感应线圈通电并产生电磁场；
    步骤B、后盖式移动电源感应到该电磁场并产生电流给无线充电装置；
    步骤C、无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态；将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。
    步骤D、无线充电装置检测无电流时，控制智能终端和后盖式移动电源进入供电状态，将智能终端的主电池和后盖式移动电源连接，后盖式移动电源对主电源供电。
    步骤E、后盖式移动电源检测其电源开关键被按下时，控制无线充电装置进入单充电模式，无线充电装置根据后盖式移动电源输出的充电电压对主电池充电。
  2. 根据权利要求1所述的基于后盖式移动电源的无线充电方法，其中，所述无线充电装置包括电源切换模块、MCU、第二充电模块和开关模块；
    所述电源切换模块根据后盖式移动电源传输的充电电流的输入状态控制MCU进入双充电模式或供电模式；MCU在双充电模式下控制开关模块断开、并控制第一充电模块和第二充电模块分别对电源电芯、主电池充电；MCU在供电模式下控制开关模块导通，将后盖式移动电源与主电池连接，后盖式移动电源对主电源供电。
  3. 根据权利要求2所述的基于后盖式移动电源的无线充电方法，其中，所述电源切换模块还根据后盖式移动电源传输的切换信号控制MCU进入单充电模式；
    MCU控制开关模块断开并控制第二充电模块工作；还从后盖式移动电源获取充电电压并通过电源切换模块输出给第二充电模块，第二充电模块根据充电电压对主电池充电。
  4. 根据权利要求1所述的基于后盖式移动电源的无线充电方法，其中，所述后盖式移动电源包括无线电源接收器、第一充电模块和电源电芯；
    所述无线电源接收器根据感应到的电磁场产生电流，对所述电流进行整流滤波调节后输出充电电流；第一充电模块根据无线充电装置输出的信号控制电源电芯的充放电状态。
  5. 一种基于后盖式移动电源的无线充电装置，与主电池和后盖式移动电源连接，其中，包括电源切换模块、MCU、第二充电模块和开关模块；
    所述电源切换模块根据后盖式移动电源传输的充电电流的输入状态控制MCU进入双充电模式或供电模式；MCU在双充电模式下控制开关模块断开、并控制第一充电模块和第二充电模块分别对电源电芯、主电池充电；MCU在供电模式下控制开关模块导通，将后盖式移动电源与主电池连接，后盖式移动电源对主电源供电。
  6. 根据权利要求5所述的基于后盖式移动电源的无线充电装置，其中，所述电源切换模块还根据后盖式移动电源传输的切换信号控制MCU进入单充电模式；
    MCU控制开关模块断开并控制第二充电模块工作；还从后盖式移动电源获取充电电压并通过电源切换模块输出给第二充电模块，第二充电模块根据充电电压对主电池充电。
  7. 根据权利要求5述的基于后盖式移动电源的无线充电装置，其中，所述MCU与电源切换模块、第二充电模块、后盖式移动电源之间通过I 2 C总线进行通讯。
  8. 一种基于后盖式移动电源的无线充电系统，其中，包括无线充电器、后盖式移动电源和智能终端；
    所述智能终端内设置有主电池和如权利要求5所述的无线充电装置；
    当无线充电器接通电源时，内置感应线圈通电并产生电磁场；后盖式移动电源感应到该电磁场并产生电流给无线充电装置；所述无线充电装置检测到所述电流时，控制智能终端和后盖式移动电源进入充电状态，将充电电流分别传输给智能终端的主电池和后盖式移动电源进行充电。
  9. 根据权利要求8所述的基于后盖式移动电源的无线充电系统，其中，所述后盖式移动电源包括无线电源接收器、第一充电模块和电源电芯；
    所述无线电源接收器根据感应到的电磁场产生电流，对所述电流进行整流滤波调节后输出充电电流；第一充电模块根据无线充电装置输出的信号控制电源电芯的充放电状态。
  10. 根据权利要求9所述的基于后盖式移动电源的无线充电系统，其中，所述无线充电装置还检测无电流时，控制智能终端和后盖式移动电源进入供电状态，将智能终端的主电池和后盖式移动电源的电源电芯连接，电源电芯对主电源供电。
  11. 根据权利要求9所述的基于后盖式移动电源的无线充电系统，其中，所述后盖式移动电源还包括控制模块；所述控制模块检测后盖式移动电源上的电源开关键被按下时，控制无线充电装置进入单充电模式，无线充电装置根据后盖式移动电源输出的充电电压对主电池充电。
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CN106451614A (zh) 2017-02-22
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