WO2012006883A1 - 一种蓝牙耳机及其充电方法 - Google Patents

一种蓝牙耳机及其充电方法 Download PDF

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Publication number
WO2012006883A1
WO2012006883A1 PCT/CN2011/071699 CN2011071699W WO2012006883A1 WO 2012006883 A1 WO2012006883 A1 WO 2012006883A1 CN 2011071699 W CN2011071699 W CN 2011071699W WO 2012006883 A1 WO2012006883 A1 WO 2012006883A1
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WIPO (PCT)
Prior art keywords
voltage
card
bluetooth headset
mobile terminal
regulator chip
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PCT/CN2011/071699
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English (en)
French (fr)
Inventor
王剑平
黄伟
Original Assignee
中兴通讯股份有限公司
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Publication of WO2012006883A1 publication Critical patent/WO2012006883A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive or capacitive transmission systems
    • H04B5/70Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
    • H04B5/79Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for data transfer in combination with power transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1025Accumulators or arrangements for charging
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07Applications of wireless loudspeakers or wireless microphones

Definitions

  • the present invention relates to Bluetooth technology in the field of wireless communications, and in particular to a Bluetooth headset and a charging method thereof. Background technique
  • Bluetooth technology was introduced in 1998 as a cutting-edge open wireless communication technology.
  • the Bluetooth Special Interest Group (SIG) was established. The organization is responsible for the development of Bluetooth technology and the development of technical protocols. Bluetooth technology enables wireless connection of portable mobile terminals such as computers, notebook computers, personal digital assistants (PDAs), mobile phones, digital cameras, etc. within a short distance, enabling wireless communication between various mobile terminals. Short-distance data transmission is more convenient and faster.
  • Bluetooth headset An important application of Bluetooth technology is the Bluetooth headset.
  • the main advantage of the Bluetooth headset over the traditional headset is that it eliminates the restraint of the cable, and can free the hands when answering or making a call, which brings convenience to the user, especially when using a Bluetooth headset when driving.
  • the Bluetooth headset in the prior art has at least the following drawbacks: In the prior art, the charger used by the Bluetooth headset is to voltage-regulate the commercial power, and then charge the Bluetooth headset, so in the place where there is no mains socket.
  • the Bluetooth headset generally uses the built-in battery, and the battery cannot be replaced at any time like the mobile terminal, and the battery capacity of the Bluetooth headset is relatively small, and it is often required to be frequently charged when the frequency of use is high, and the charging time is relatively high. Long, so the use of Bluetooth headsets is limited; in addition, each Bluetooth headset has its own dedicated charger, there is no charger that can be used by a variety of Bluetooth headsets, so there is no charger for Bluetooth headset At the time, it undoubtedly brought great trouble to the user. Summary of the invention
  • the main object of the present invention is to provide a Bluetooth headset and a charging method thereof, which can charge a Bluetooth headset in time and conveniently.
  • the present invention discloses a Bluetooth headset, including: a secure digital storage (SD) card, a boost regulator chip, and a battery;
  • SD secure digital storage
  • SD card used to obtain the voltage of the mobile terminal
  • Boost regulator chip for boosting and regulating the obtained voltage
  • the battery is used to charge itself with the voltage after the boost voltage regulation.
  • the mobile terminal is a mobile terminal having an SD card interface
  • the boost regulator chip is a chip capable of supporting the operating voltage of the SD card, and the SD card operates at a voltage of 1.65 volts to 1.95 volts or 2.7 volts to 3.6 volts.
  • the SD card is used to obtain the voltage of the mobile terminal: after the SD card is inserted into the SD card interface of the mobile terminal, the SD card acquires a voltage through the SD card interface of the mobile terminal, and the slave terminal obtains a voltage from the mobile terminal. The acquired voltage is passed to the voltage input of the boost regulator chip.
  • the Vcc end of the SD card is connected to the voltage input end of the boost regulator chip, and the Vss end of the SD card is grounded.
  • the boost regulator chip is configured to perform a step-up and voltage stabilization process on the acquired voltage: the boost regulator chip performs a boost voltage stabilization process on the voltage obtained by the SD card, and the boost voltage is stabilized.
  • the voltage output of the voltage chip is connected to the charging pin of the battery of the Bluetooth headset, and the boost regulator chip outputs the processed voltage to the battery of the Bluetooth headset.
  • the invention also provides a charging method for a Bluetooth earphone, comprising:
  • the SD card of the Bluetooth headset acquires the voltage of the mobile terminal, performs boost voltage regulation on the acquired voltage, and charges the battery of the Bluetooth headset by using the voltage after the boost voltage regulation.
  • the SD card of the Bluetooth headset acquires the voltage of the mobile terminal as:
  • the SD card of the Bluetooth headset After the SD card of the Bluetooth headset is inserted into the SD card interface of the mobile terminal, the SD card acquires a voltage through the SD card interface of the mobile terminal, and transmits the voltage obtained from the mobile terminal to the voltage input terminal of the boost regulator chip.
  • the method before the inserting the SD card of the Bluetooth headset into the SD card interface of the mobile terminal, the method further includes:
  • the boosting and voltageing processing of the obtained voltage is:
  • the boosting regulator chip of the Bluetooth headset performs boost voltage regulation on the voltage obtained by the SD card, and connects the voltage output end of the boost regulator chip to the charging pin of the battery of the Bluetooth headset, and the boost regulator chip will process The voltage is output to the battery of the Bluetooth headset.
  • the bluetooth earphone and the charging method thereof provided by the invention obtain the power of the mobile terminal by using the SD card of the bluetooth earphone, and charge the battery of the bluetooth earphone, so that the mobile terminal can be timely and convenient as long as the mobile terminal has power or carries the charger of the mobile terminal.
  • the Bluetooth headset is charged by the mobile terminal, and the charger of the special Bluetooth headset is not needed, which overcomes the problem that the Bluetooth headset cannot be charged in time and the charger of the Bluetooth headset is inconvenient.
  • FIG. 1 is a schematic structural view of a Bluetooth earphone of the present invention
  • FIG. 2 is a schematic flow chart of a method for charging a Bluetooth headset according to the present invention
  • FIG. 3 is a schematic diagram showing a connection relationship between an SD card and a boost regulator chip in the Bluetooth headset of the present invention
  • FIG. 4 is a schematic external view of the Bluetooth headset of the present invention
  • FIG. 5 is a circuit diagram of a boost regulator chip of the Bluetooth headset of the present invention. detailed description
  • the basic idea of the present invention is: a secure digital storage (SD) card acquires the voltage of the mobile terminal; the boost regulator chip performs a step-up voltage regulation process on the obtained voltage; and the battery uses the voltage after the boost voltage regulation to charge itself.
  • SD secure digital storage
  • FIG. 1 is a schematic structural diagram of a Bluetooth headset according to the present invention. As shown in FIG. 1, the Bluetooth headset includes: an SD card 11, a boost regulator chip 12, and a battery 13;
  • the SD card 11 is configured to acquire a voltage of the mobile terminal
  • the boost regulator chip 12 is configured to perform boost voltage regulation on the obtained voltage
  • the battery 13 is used to charge itself by the voltage after the boost voltage regulation.
  • the mobile terminal is a mobile terminal having an SD card interface
  • the boost regulator chip 12 is a chip capable of supporting the operating voltage of the SD card 11, and the operating voltage of the SD card 11 is 1.65 volts to 1.95 volts or 2.7 volts to 3.6 volts.
  • the SD card 11 obtains the voltage of the mobile terminal as: connecting the Vcc end of the SD card 11 to the voltage input end of the boosting regulator chip 12 of the Bluetooth headset, and grounding the Vss end of the SD card 11; 11 is inserted into the SD card interface of the mobile terminal, the SD card 11 obtains a voltage through the SD card interface of the mobile terminal, and transmits the voltage obtained from the mobile terminal to the voltage input end of the boost regulator chip 12;
  • the boost regulator chip 12 performs a step-up and voltage regulation process on the obtained voltage as follows:
  • the boost regulator chip 12 performs a step-up and voltage stabilization process on the voltage obtained by the SD card 11, and outputs the voltage of the boost regulator chip 12
  • the terminal is connected to the charging pin of the battery 13 of the Bluetooth headset, and the boost regulator chip 12 outputs the processed voltage to the battery 13 of the Bluetooth headset.
  • FIG. 2 is a schematic flowchart of a method for charging a Bluetooth headset according to the present invention. As shown in FIG. 2, the method includes the following steps: Step 201: The SD card of the Bluetooth headset acquires the voltage of the mobile terminal.
  • FIG. 3 is a schematic diagram of a connection relationship between an SD card and a boost regulator chip in the Bluetooth headset of the present invention.
  • a Secure Digital Memory (SD) card is integrated in the Bluetooth headset, that is, an SD card.
  • the Vcc end is connected to the voltage input terminal Vin of the boosting chip of the Bluetooth headset, and the Vss end of the SD card is grounded;
  • the SD card in the Bluetooth headset can also pass the four data lines of DAT0, DAT1, DAT2, DAT3 and
  • the data lines of the mobile terminal are connected to implement data interaction between the SD card of the Bluetooth headset and the mobile terminal, so that the Bluetooth headset in this embodiment can also be used as a mobile storage device of the mobile terminal for storing data;
  • FIG. 4 is a schematic external view of the Bluetooth headset of the present invention.
  • a toggle button can be used (the H SD card is not shown in the figure and slides out of the recess of the Bluetooth headset, and then Insert the SD card of the Bluetooth headset into the SD card interface of the mobile terminal, so that the SD card of the Bluetooth headset can obtain the voltage through the SD card interface of the mobile terminal; the SD card transmits the voltage obtained from the mobile terminal to the boost regulator through the Vcc terminal.
  • the voltage input of the chip is Vin;
  • the SD card supports two ranges of operating voltages, 1.65 volts to 1.95 volts and 2.7 volts to 3.6 volts, and most SD cards operate from 2.7 volts to 3.6 volts;
  • the output voltage of the various interfaces of the mobile terminal is set to the standard voltage of the interface in the industry. For example, since the operating voltage range of the SD card is mostly 2.7 volts to 3.6 volts, the SD of the mobile terminal The output voltage of the card interface is usually 2.85 volts, which satisfies the range of operating voltages of most SD cards;
  • the mobile terminal in this embodiment is a mobile terminal having an SD card interface, such as a notebook computer, a digital camera, a mobile phone, and a PDA.
  • SD card interface such as a notebook computer, a digital camera, a mobile phone, and a PDA.
  • Step 202 Perform a step-up and voltage stabilization process on the obtained voltage.
  • the boost regulator chip of the Bluetooth headset performs voltage boosting processing on the voltage obtained by the SD card.
  • the boost regulator chip can be SP6641A chip, SP6641B chip, ME2100A chip, LTC3400B chip or APW7075 chip, etc. , according to the needs of the output of electricity
  • the voltage and current are selected as boost regulator chips, and the input voltage of these chips can support the working voltage of the SD card;
  • the input voltage of the battery of the Bluetooth headset is 5 volts, and the input current is 200 mA to 500 mA, so the SP6641B chip is selected as the boost regulator chip, as long as the SP6641B is used.
  • the chip outputs 5 volts and 200 mA to 500 mA; the Bluetooth headset's battery has an input voltage of 3.3 volts, and the SP6641A chip can be used as the boost.
  • the voltage regulator chip now taking the SP6641B chip as the boost regulator chip as an example, FIG. 5 is a circuit diagram of the boost regulator chip of the Bluetooth earphone of the present invention, as shown in FIG.
  • the battery voltage pin Vbatt of the SP6641B chip and The SHDN pin is respectively connected to the voltage input terminal Vin, and the voltage output terminal Vout of the boost regulator chip is connected with the charging pin of the battery of the Bluetooth earphone, so that the voltage after the boost voltage regulation process can be output to the Bluetooth earphone.
  • Battery; Capacitor Cl, Capacitor C2 and Capacitor C3 are capacitors used for filtering, which will result in output without filtering. The voltage is unstable.
  • the filter capacitor C1, the capacitor C2 and the capacitor C3 are selected according to the principle of the minimum series connection.
  • the capacitor C1 and the capacitor C2 can be selected as the POSCAP capacitor, and the capacitor C3 can be the ceramic capacitor; the inductor L1 and the voltage regulator
  • the diode Vdl is used to ensure that the voltage of the battery output to the Bluetooth earphone is a stable voltage.
  • the inductance L1 is the energy storage component of the whole circuit, and the resistance of the inductance coil of the inductor L1 should be less than 0.5 ohm.
  • Inductor L1 should use shielded inductor; Zener diode Vdl can be Schottky diode with small forward voltage drop and short reverse recovery time.
  • ZHCS2000 Zener diode inductor L1 can use CDRH5D2B inductor;
  • the input voltage of the SP6641B chip is 0.9 volts to 4.5 volts
  • this range of input voltages supports the two ranges of operating voltage of the SD card
  • the SP6641B chip can also provide 5 volts of voltage to the battery of the Bluetooth headset and 200 mA to 500 mA, so it can meet the charging voltage and charging current requirements of the battery of the Bluetooth headset
  • the input voltage of the boost regulator chip supports the range of the operating voltage of the SD card
  • This embodiment The Bluetooth headset can be connected to a mobile terminal with an SD card interface produced by any manufacturer, that is, a mobile terminal with an SD card interface produced by any manufacturer can charge the Bluetooth headset in this embodiment.
  • Step 203 charging the battery of the Bluetooth headset by using the voltage after the boost voltage regulation; specifically, the battery of the Bluetooth headset receives the voltage after the boost voltage regulation through its own charging pin, and uses the voltage to charge itself.

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

Abstract

一种蓝牙耳机及其充电方法。该蓝牙耳机包括安全数码存储(SD)卡、升压稳压芯片和电池。该SD卡获取移动终端的电压。该升压稳压芯片对从移动终端获取的电压进行处理。该电池利用升压稳压处理后的电压进行充电。本发明能够方便地为蓝牙耳机充电。

Description

一种蓝牙耳机及其充电方法 技术领域
本发明涉及无线通信领域的蓝牙技术, 尤其涉及一种蓝牙耳机及其充 电方法。 背景技术
蓝牙技术是 1998年推出的一种尖端的开放式无线通信技术, 随后蓝牙 技术特别兴趣小组( SIG, Special Interest Group )成立, 该组织负责蓝牙技 术的开发和技术协议的制定等工作。 蓝牙技术能够实现在短距离范围内无 线连接计算机、笔记本电脑、个人数码助理( PDA, Personal Digital Assistant )、 移动电话、 数码相机等便携的移动终端, 让各种移动终端之间能够无线沟 通, 使得短距离数据传输更加方便快捷。
蓝牙技术的一个重要的应用就是蓝牙耳机。 蓝牙耳机相对于传统耳机 的主要优势就是摒弃了连接线的束缚, 在接听或拨打电话时可以将双手解 放出来, 给用户带来便利, 尤其是开车时使用蓝牙耳机极为便利。 但是, 现有技术中的蓝牙耳机至少存在以下缺陷: 现有技术中蓝牙耳机使用的充 电器都是将市电变压稳压后, 再对蓝牙耳机进行充电, 因此在没有市电插 座的地方就无法对蓝牙耳机进行充电; 蓝牙耳机一般釆用内置电池, 并不 能像移动终端一样随时更换电池, 而且蓝牙耳机的电池容量比较小, 在使 用频率较高时通常需要频繁充电, 且充电时间较长, 因此蓝牙耳机的使用 受到一定的限制; 此外, 每种蓝牙耳机都有各自专门的充电器, 并不存在 一个多种蓝牙耳机都可以使用的充电器, 因此在没有蓝牙耳机专用的充电 器时, 无疑给用户带来了极大的麻烦。 发明内容
有鉴于此, 本发明的主要目的在于提供一种蓝牙耳机及其充电方法, 能够及时方便的为蓝牙耳机充电。
为达到上述目的, 本发明的技术方案是这样实现的:
本发明公开一种蓝牙耳机, 包括: 安全数码存储(SD )卡、 升压稳压 芯片、 电池; 其中,
SD卡, 用于获取移动终端的电压;
升压稳压芯片 , 用于对获取的电压进行升压稳压处理;
电池, 用于利用升压稳压处理后的电压为自身充电。
上述蓝牙耳机中,
所述移动终端为具有 SD卡接口的移动终端;
所述升压稳压芯片是能够支持 SD卡的工作电压的芯片, SD卡的工作 电压为 1.65伏特至 1.95伏特或 2.7伏特至 3.6伏。
上述蓝牙耳机中, 所述 SD卡用于获取移动终端的电压为: 所述 SD卡 插入移动终端的 SD卡接口后, 所述 SD卡通过移动终端的 SD卡接口获取 电压, 并将从移动终端获取的电压传给升压稳压芯片的电压输入端。
上述蓝牙耳机中 ,所述 SD卡的 Vcc端与所述升压稳压芯片的电压输入 端相连, 所述 SD卡的 Vss端接地。
上述蓝牙耳机中, 所述升压稳压芯片用于对获取的电压进行升压稳压 处理为: 所述升压稳压芯片对 SD卡获取的电压进行升压稳压处理,将升压 稳压芯片的电压输出端与蓝牙耳机的电池的充电引脚相连, 升压稳压芯片 将处理后的电压输出给蓝牙耳机的电池。
本发明还提供一种蓝牙耳机的充电方法, 包括:
蓝牙耳机的 SD卡获取移动终端的电压,对获取的电压进行升压稳压处 理, 利用升压稳压处理后的电压为蓝牙耳机的电池充电。 上述方法中, 所述蓝牙耳机的 SD卡获取移动终端的电压为:
蓝牙耳机的 SD卡插入移动终端的 SD卡接口后, 所述 SD卡通过移动 终端的 SD卡接口获取电压,并将从移动终端获取的电压传给升压稳压芯片 的电压输入端。
上述方法中,所述将蓝牙耳机的 SD卡插入移动终端的 SD卡接口之前, 该方法还包括:
将 SD卡的 Vcc端与蓝牙耳机的升压稳压芯片的电压输入端相连, 将 SD卡的 Vss端接地。
上述方法中, 所述对获取的电压进行升压稳压处理为:
蓝牙耳机的升压稳压芯片对 SD卡获取的电压进行升压稳压处理,将升 压稳压芯片的电压输出端与蓝牙耳机的电池的充电引脚相连, 升压稳压芯 片将处理后的电压输出给蓝牙耳机的电池。
本发明提供的蓝牙耳机及其充电方法,利用蓝牙耳机的 SD卡获取移动 终端的电量, 为蓝牙耳机的电池充电, 因此只要移动终端有电或者携带有 移动终端的充电器, 就可以及时方便的通过移动终端为蓝牙耳机充电, 并 且不需要携带专门的蓝牙耳机的充电器, 克服了不能够及时给蓝牙耳机充 电以及蓝牙耳机的充电器携带不便的问题。 附图说明
图 1是本发明蓝牙耳机的结构示意图;
图 2是本发明实现蓝牙耳机的充电方法的流程示意图;
图 3是本发明蓝牙耳机中 SD卡与升压稳压芯片连接关系的示意图; 图 4是本发明蓝牙耳机的外部示意图;
图 5是本发明蓝牙耳机的升压稳压芯片的电路示意图。 具体实施方式
本发明的基本思想是: 安全数码存储 (SD )卡获取移动终端的电压; 升压稳压芯片对获取的电压进行升压稳压处理; 电池利用升压稳压处理后 的电压为自身充电。
下面通过附图及具体实施例对本发明再做进一步的详细说明。
本发明提供一种蓝牙耳机, 图 1 是本发明蓝牙耳机的结构示意图, 如 图 1所示, 该蓝牙耳机包括: SD卡 11、 升压稳压芯片 12、 电池 13; 其中,
SD卡 11 , 用于获取移动终端的电压;
升压稳压芯片 12, 用于对获取的电压进行升压稳压处理;
电池 13 , 用于利用升压稳压处理后的电压为自身充电。
所述移动终端为具有 SD卡接口的移动终端;
所述升压稳压芯片 12是能够支持 SD卡 11的工作电压的芯片, SD卡 11的工作电压为 1.65伏特至 1.95伏特或 2.7伏特至 3.6伏。
所述 SD卡 11获取移动终端的电压为: 将 SD卡 11的 Vcc端与蓝牙耳 机的升压稳压芯片 12的电压输入端相连, 将 SD卡 11的 Vss端接地; 将蓝 牙耳机的 SD卡 11插入移动终端的 SD卡接口, 所述 SD卡 11通过移动终 端的 SD 卡接口获取电压, 并将从移动终端获取的电压传给升压稳压芯片 12的电压输入端;
所述升压稳压芯片 12对获取的电压进行升压稳压处理为: 升压稳压芯 片 12对 SD卡 11获取的电压进行升压稳压处理, 将升压稳压芯片 12的电 压输出端与蓝牙耳机的电池 13的充电引脚相连, 升压稳压芯片 12将处理 后的电压输出给蓝牙耳机的电池 13。
基于上述蓝牙耳机, 本发明还提供一种蓝牙耳机的充电方法, 图 2是 本发明实现蓝牙耳机的充电方法的流程示意图, 如图 2 所示, 该方法包括 以下步骤: 步骤 201 , 蓝牙耳机的 SD卡获取移动终端的电压;
具体的,图 3是本发明蓝牙耳机中 SD卡与升压稳压芯片连接关系的示 意图, 如图 3所示, 在蓝牙耳机中集成安全数码存储(SD, Secure Digital Memory )卡, 即将 SD卡的 Vcc端与蓝牙耳机的升压稳压芯片的电压输入 端 Vin相连, 将 SD卡的 Vss端接地; 此外, 蓝牙耳机中的 SD卡还可以通 过 DAT0、 DAT1、 DAT2、 DAT3四根数据线与移动终端的数据线相连, 实 现蓝牙耳机的 SD卡与移动终端的数据交互,这样本实施例中的蓝牙耳机还 可以作为移动终端的移动存储设备, 用于存储数据;
图 4是本发明蓝牙耳机的外部示意图, 如图 4所示, 需要对蓝牙耳机 充电时, 可以通过一个拨动钮(图中未画出 H SD卡滑出蓝牙耳机的凹槽 之外, 然后将蓝牙耳机的 SD卡插入移动终端的 SD卡接口, 这样蓝牙耳机 的 SD卡就可以通过移动终端的 SD卡接口获取电压; SD卡将从移动终端 获取的电压通过 Vcc端传给升压稳压芯片的电压输入端 Vin; SD卡支持两 个范围的工作电压, 分别是 1.65伏特至 1.95伏特和 2.7伏特至 3.6伏特, 大部分的 SD卡的工作电压是 2.7伏特至 3.6伏特; 在移动终端生产厂商生 产移动终端时, 会将移动终端的各种接口的输出电压设置为行业内接口的 标准电压, 例如, 由于 SD卡的工作电压的范围大部分是 2.7伏特至 3.6伏 特, 所以移动终端的 SD卡接口的输出电压通常是 2.85伏特, 该电压值满 足大部分 SD卡的工作电压的范围;
本实施例中的移动终端是具有 SD 卡接口的移动终端, 例如笔记本电 脑、 数码照相机、 移动电话和 PDA等。
步骤 202, 对获取的电压进行升压稳压处理;
具体的,蓝牙耳机的升压稳压芯片对 SD卡获取的电压进行升压稳压处 理, 实际应用中, 升压稳压芯片可以是 SP6641A 芯片、 SP6641B 芯片、 ME2100A芯片、 LTC3400B芯片或 APW7075芯片等, 根据需要输出的电 压和电流的大小选择升压稳压芯片,这些芯片的输入电压都可以支持 SD卡 的工作电压;
根据蓝牙耳机的电池的充电标准, 本实施例中, 蓝牙耳机的电池的输 入电压是 5伏特, 输入电流是 200毫安至 500毫安, 所以选用 SP6641B芯 片作为升压稳压芯片, 只要利用 SP6641B芯片作为升压稳压芯片, 输出的 就是 5伏特的电压和 200毫安至 500毫安的电流; 蓝牙耳机的电池的输入 电压还有 3.3伏特的电压, 这时就可以选用 SP6641A芯片作为升压稳压芯 片; 现以 SP6641B芯片作为升压稳压芯片为例说明, 图 5是本发明蓝牙耳 机的升压稳压芯片的电路示意图, 如图 5所示, SP6641B芯片的电池电压 管脚 Vbatt和 SHDN管脚分别与电压输入端 Vin相连,将升压稳压芯片的电 压输出端 Vout与蓝牙耳机的电池的充电引脚相连, 这样经过升压稳压处理 后的电压, 就可以输出给蓝牙耳机的电池; 电容 Cl、 电容 C2和电容 C3是 用于滤波的电容, 不进行滤波处理会导致输出的电压不稳定, 本实施例中 依据等效串联最小的原则选取滤波电容 Cl、 电容 C2和电容 C3 , 例如, 电 容 C1和电容 C2可以选用 POSCAP电容, 电容 C3可以选用陶瓷电容; 电 感 L1和稳压二极管 Vdl都用于保证输出给蓝牙耳机的电池的电压是稳定电 压, 电感 L1是整个电路的储能元件, 电感 L1的电感线圈的电阻应小于 0.5 欧姆, 本实施例中为了减小噪音辐射, 电感 L1应选用屏蔽电感; 稳压二极 管 Vdl可以是正向导通压降小, 反向恢复时间短的肖特基二极管, 例如, ZHCS2000稳压二极管, 电感 L1可以选用 CDRH5D2B电感;
其中, 因为 SP6641B芯片的输入电压是 0.9伏特至 4.5伏特, 所以这个 输入电压的范围支持 SD卡的两个范围的工作电压, 同时因为 SP6641B芯 片还可以给蓝牙耳机的电池提供 5伏特的电压和 200毫安至 500毫安的电 流, 所以能够满足蓝牙耳机的电池的充电电压和充电电流的要求; 此外, 由于升压稳压芯片的输入电压支持 SD卡的工作电压的范围,这样本实施例 中的蓝牙耳机可以同任意厂商生产的具备 SD卡接口的移动终端相连,即任 意厂商生产的具备 SD 卡接口的移动终端都可以给本实施例中的蓝牙耳机 充电。
步骤 203 , 利用升压稳压处理后的电压为蓝牙耳机的电池充电; 具体的, 蓝牙耳机的电池通过自身的充电引脚收到升压稳压处理后的 电压, 利用该电压为自身充电。
以上所述, 仅为本发明的较佳实施例而已, 并非用于限定本发明的保 护范围, 凡在本发明的精神和原则之内所作的任何修改、 等同替换和改进 等, 均应包含在本发明的保护范围之内。

Claims

权利要求书
1、 一种蓝牙耳机, 其特征在于, 该蓝牙耳机包括: 安全数码存储(SD ) 卡、 升压稳压芯片、 电池; 其中,
SD卡, 用于获取移动终端的电压;
升压稳压芯片 , 用于对获取的电压进行升压稳压处理;
电池, 用于利用升压稳压处理后的电压为自身充电。
2、 根据权利要求 1所述的蓝牙耳机, 其特征在于,
所述移动终端为具有 SD卡接口的移动终端;
所述升压稳压芯片是能够支持 SD卡的工作电压的芯片, SD卡的工作 电压为 1.65伏特至 1.95伏特或 2.7伏特至 3.6伏。
3、 根据权利要求 2所述的蓝牙耳机, 其特征在于, 所述 SD卡用于获 取移动终端的电压为:
所述 SD卡插入移动终端的 SD卡接口后, 所述 SD卡通过移动终端的 SD卡接口获取电压, 并将从移动终端获取的电压传给升压稳压芯片的电压 输入端。
4、 根据权利要求 1所述的蓝牙耳机, 其特征在于, 所述 SD卡的 Vcc 端与所述升压稳压芯片的电压输入端相连, 所述 SD卡的 Vss端接地。
5、 根据权利要求 1至 4任一所述的蓝牙耳机, 其特征在于, 所述升压 稳压芯片用于对获取的电压进行升压稳压处理为:
所述升压稳压芯片对 SD卡获取的电压进行升压稳压处理,将升压稳压 芯片的电压输出端与蓝牙耳机的电池的充电引脚相连, 升压稳压芯片将处 理后的电压输出给蓝牙耳机的电池。
6、 一种蓝牙耳机的充电方法, 其特征在于, 该方法包括:
蓝牙耳机的 SD卡获取移动终端的电压,对获取的电压进行升压稳压处 理, 利用升压稳压处理后的电压为蓝牙耳机的电池充电。
7、 根据权利要求 6所述的方法, 其特征在于, 所述蓝牙耳机的 SD卡 获取移动终端的电压为:
蓝牙耳机的 SD卡插入移动终端的 SD卡接口后, 所述 SD卡通过移动 终端的 SD卡接口获取电压,并将从移动终端获取的电压传给升压稳压芯片 的电压输入端。
8、 根据权利要求 7所述的方法, 其特征在于, 所述将蓝牙耳机的 SD 卡插入移动终端的 SD卡接口之前, 该方法还包括:
将 SD卡的 Vcc端与蓝牙耳机的升压稳压芯片的电压输入端相连, 将 SD卡的 Vss端接地。
9、 根据权利要求 6至 8任一所述的方法, 其特征在于, 所述对获取的 电压进行升压稳压处理为:
蓝牙耳机的升压稳压芯片对 SD卡获取的电压进行升压稳压处理,将升 压稳压芯片的电压输出端与蓝牙耳机的电池的充电引脚相连, 升压稳压芯 片将处理后的电压输出给蓝牙耳机的电池。
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