WO2013174081A1 - 充电电路及其控制方法 - Google Patents
充电电路及其控制方法 Download PDFInfo
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- WO2013174081A1 WO2013174081A1 PCT/CN2012/080455 CN2012080455W WO2013174081A1 WO 2013174081 A1 WO2013174081 A1 WO 2013174081A1 CN 2012080455 W CN2012080455 W CN 2012080455W WO 2013174081 A1 WO2013174081 A1 WO 2013174081A1
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- charging
- circuit
- unit
- mobile device
- current
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Classifications
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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
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- 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
Definitions
- the invention belongs to the field of mobile device products, and more particularly to a charging circuit and a control method thereof. Background technique
- UFI (Mobile Wireless Router) products and PAD (Handheld Mobile Devices) products are increasingly favored by consumers, and the battery capacity of these two types of products is also growing, and the future mainstream is above 4500 mAh, in satisfying itself.
- power consumption there may be a large amount of power.
- Consumers want to charge other mobile devices, such as smart phones. Smartphones are subject to size. The battery is often below 2000mAh, so there is no power soon. In the absence of utility power, similar to the wild, you can charge your smartphone with UFI or PAD products for emergency use.
- the charging problem of the mobile terminal may use different chargers depending on the brand, which brings a problem of charging trouble to the user, and an ideal solution has not been proposed for this problem.
- the invention discloses a charging circuit and a control method thereof, which are used for solving the problem that the mobile device cannot use the same charger due to different brands in the prior art.
- the technical solution of the present invention is implemented as follows:
- a charging circuit comprising:
- the charging adapter unit includes at least two types of charging circuits, and the charging adapter unit is connected to the universal interface for providing a corresponding charging circuit for the mobile device;
- a voltage conversion unit connected to the charging power source, configured to adjust an output voltage of the charging power source to a charging voltage of the mobile device
- a current detecting unit is connected between the voltage converting unit and the charging adapting unit for detecting a charging current, and the charging current is used to determine a charging circuit corresponding to the mobile device.
- the at least two types of charging circuits include a first circuit and a second circuit; wherein, the first circuit is a charging circuit having the same voltage on two data pins, and the second circuit is two data tubes The charging circuit on the foot is different in voltage.
- the control unit is connected to the current detecting unit, the charging adapting unit and the power converting unit, respectively, for determining that the mobile device is charged according to the current value detected by the current detecting unit, wherein the control unit comprises:
- a power management chip respectively connected to the charging power source and the current detecting unit, configured to collect the current value, and collect a power supply voltage provided by the charging power source for the control unit;
- a main control chip connected to the power management a chip and the voltage conversion unit, configured to issue a control instruction according to the current value, and control opening and closing of the voltage conversion unit;
- the switch control unit is respectively connected to the main control chip and the charging and adapting unit, and is configured to issue a control command according to the current value to control opening and closing of the charging and adapting unit.
- the universal interface is a USB interface.
- a method of controlling a charging circuit comprising:
- the charging current adaptation unit defaults to the current first circuit as a charging circuit of the mobile device
- the charging adaptation unit determines whether the first current value corresponding to the charging voltage of the first circuit is greater than the first threshold, and obtains a first determination result
- the charging adaptation unit controls the first circuit to charge the mobile device when the first determination result is that the first current value is greater than the first threshold.
- the method further includes:
- the voltages on the two data pins of the first circuit are the same.
- the method further includes: when the first determination result is that the first current value is less than or equal to the first threshold, the method further includes:
- the second circuit is controlled to charge the mobile device.
- the voltages on the two data pins of the second circuit are different.
- FIG. 1 is a schematic structural view of a charging circuit according to an embodiment of the present invention.
- FIG. 2 is a schematic structural view of a charging circuit according to still another embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a charging circuit according to an embodiment of the present invention
- 4 is a flow chart showing a control method of a charging circuit according to an embodiment of the present invention
- FIG. 5 is a flow chart showing a control method of a charging circuit according to still another embodiment of the present invention.
- FIG. 1 is a schematic structural view of a charging circuit according to an embodiment of the present invention.
- the charging circuit includes: a universal interface 16 for connecting a mobile device to be charged; a charging adapter unit 14 including at least two types of charging circuits (not shown), and the charging adapter unit 14 is connected a universal interface 16 for providing a corresponding charging circuit for the mobile device; a voltage conversion unit 10 connected to a charging power source (not shown) for adjusting an output voltage of the charging power source to the mobile device a charging voltage; a current detecting unit 12 connected between the voltage converting unit 10 and the charging adapting unit 14 for detecting a charging current, the charging current being used for determining a charging circuit corresponding to the mobile device .
- the voltage conversion unit 10 can use a chip which is a step-up DC-DC (voltage converter), which raises the battery voltage to a standard voltage of 5V required by the charging circuit, and provides a current output capability of up to 2A.
- the efficiency is over 80% in the case of an output voltage of 5V and a current of 2A.
- the circuit detecting circuit 12 can be composed of a resistor and a chip, wherein the resistor can be a 30 milliohm Sense resistor, and the chip can be an amplifier with a magnification of 25. 1
- the voltage difference across the chip sense resistor, the current through the resistor can be calculated by the resistance of the resistor. This current is a very important parameter used to select the charging adapter circuit and the end of the charging process.
- the charging circuit further includes a control unit 20, and the control unit 20 is connected to the current detecting unit 12, the charging adapting unit 14, and the power converting unit 10, respectively, according to the current detecting unit.
- the detected current value determines whether the mobile device is fully charged, thereby controlling the opening and closing of the charging adapter unit 14 and the power conversion unit 12.
- control unit 20 includes: a power management chip 201, respectively connected to the charging power source 22 and the current detecting unit 12, for collecting the current value, and collecting the charging power source as the control unit a power supply voltage provided by the main control chip 203, connected to the power management chip 201 and the voltage conversion unit 10, for issuing a control command according to the current value, controlling the voltage conversion unit 10 to be turned on and off;
- the control unit 202 is connected to the main control chip 203 and the charging and adapting unit 14, respectively, for issuing a control command according to the current value, and controlling the opening and closing of the charging and adapting unit 14.
- the charging circuit of the embodiment further provides a The control unit 20 can control the charging adapter unit 14 and the voltage conversion unit 10 according to the instruction of the current detecting unit 12, so that when the charging is completed, the shutdown is automatically performed, thereby avoiding waste of power.
- the universal interface is a USB interface.
- the USB interface is the most commonly used universal interface in the field, and the USB interface can be widely used by mobile terminals of various brands.
- the general interface is not limited to the USB interface, and other general interfaces are also applicable in the present invention.
- FIG. 3 is a schematic diagram showing the specific structure of a charging circuit according to an embodiment of the present invention.
- D15 is a step-up DC-DC, 4 bar battery voltage rises to the required 5V standard voltage of the charging circuit, and provides a maximum current output capacity of 2A, efficiency in the case of output voltage 5V, current 2A More than 80%, VBAT (battery voltage) is the battery input.
- R2 and D1 form a current sense circuit, R2 is a 30 milliohm Sense resistor, and D1 is an amplification An op amp with a multiple of 25. D1 detects the voltage difference across R2, and the value of R2 can calculate the current through R2. This current is a very important parameter used to select the charging adaptation current and the end of the charging process.
- Transistor VT1, MOS tube VT3 and MOS tube VT2, and triode VT4 form a switch control unit.
- the collector of VT1 controls the gate of VT3, thereby controlling the turn-on and turn-off of VT3.
- VT2 and VT4 are controlled as such.
- R72, R73, R74 and R75 form a voltage divider circuit that divides 5V to 2.6V and 1.8V respectively to the DP, DM pins.
- the above technical solution of the present embodiment provides a specific implementation manner of the charging circuit of the present invention.
- the charging circuit provided by the present invention has a simple circuit design and uses the same charging interface to complete intelligent identification and use for the user. Convenience.
- FIG. 4 is a flow chart showing a method of controlling a charging circuit according to an embodiment of the present invention.
- control method of the charging circuit includes:
- the default current first circuit is a charging circuit of the mobile device
- S305 Control, when the first determination result is that the first current value is greater than the first threshold, to control the first circuit to charge the mobile device.
- the charging circuit corresponding to the mobile device is selected for charging by the current value of the circuit, thereby solving the problem that the mobile device cannot share the charging device due to different brands.
- the application scenario is closely related to its specific circuit implementation scheme, and at least two charging circuits are provided.
- the two circuits have different characteristics.
- the first circuit is the same voltage on the two data pins.
- the second circuit is the voltage difference between the two data pins, such as IPHONE4 class;
- the master chip enables the boost DC-DC, allowing the DC-DC to output a 5V, maximum 2A power supply.
- the second circuit is to detect the DP, 2.6V and 1.8V on the DM to start charging, and the first circuit is to add a voltage value to the DP, and this voltage value is also detected on the DM before charging begins.
- the first circuit needs to be selected as the charging adaptation circuit. At this time, the charging circuit corresponding to the first circuit is turned on, and the charging circuit corresponding to the second circuit is turned off.
- 4 is a flow chart showing a method of controlling a charging circuit according to still another embodiment of the present invention.
- the first circuit and the second circuit are still taken as an example.
- the first circuit is characterized by the same voltage on the two data pins
- the second circuit is characterized by different voltages on the two data pins.
- the control method of the charging circuit includes the following steps:
- Step 40 Charging starts
- Step 41 The default current second circuit is a charging adaptation circuit
- Step 42 Detect whether the current value corresponding to the current charging voltage is greater than the first threshold value of 500 mA, and if yes, go to step 43, if no, go to step 44;
- Step 43 Selecting the second circuit to charge the charging adapter circuit
- Step 44 Selecting the first circuit to charge the charging adapter circuit
- Step 45 detecting whether the current value of the second circuit is greater than the second threshold, if yes, performing charging, and returning to step 45, if not, performing step 47;
- Step 46 detecting whether the current value of the first circuit is greater than the second threshold of the charging adapter circuit, and if so, performing charging, and returning to step 46, if not, performing step 47;
- Step 47 Charging ends and the process is reset.
- control method of the charging circuit provided by the present invention can not only charge mobile devices of different brands, but also automatically control related work after charging is completed, thereby improving the user experience of the user. .
- the current detecting circuit detects the current, and if the current is greater than 500 mA, the description is The two circuit type mobile devices are charged, and the charging adaptation circuit remains unchanged.
- the current check enters the next two-level detection process, and the current is detected whether the current is greater than 100 mA. If it is greater than 100 mA, the charging is stopped. If it is less than 100 mA, the charging is stopped, the process is reset, and the next charging process is awaited.
- the current is less than 500mA, it means that IPHONE4, IPAD2 mobile device is connected, and the charging adapter circuit is switched to the first circuit type charging adapter circuit.
- the charging circuit is successfully adapted.
- the current check enters the next two-level detection process to detect whether the current is greater than 100mA in real time. If it is greater than 100mA, the charging will continue. If it is less than 100mA, the charging will stop, the process will be reset, and the next charging process will be awaited.
- the reason why the second circuit is used as the charging adapter circuit as the starting charging circuit is that if the first circuit type charging matching circuit is used, 2.6V, 1.8V voltage is applied to the DP, DM, so that if it is the second circuit type moving Device access may damage the device.
- the second circuit type charging adapter circuit is used to start the detection, and even if the first circuit type mobile device is inserted, it will not cause damage, and at most, it will not be charged.
- the charging circuit and the control method thereof provided by the invention have the advantages of simple circuit design, small size, stable function, and the like, and the product having the large capacity battery can be given to other classes by using only one USB interface.
- Mobile device charging function The application scenario of products with large-capacity batteries is expanded, and the same charging interface, intelligent identification, enhances the user experience of the user.
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Abstract
一种充电电路及其控制方法,用于为不同品牌的移动设备充电。该充电电路包括:通用接口(16),连接待充电的移动设备;充电适配单元(14),包括至少两类的充电电路,充电适配单元(14)连接通用接口(16),用于为移动设备提供相应的充电电路;电压转换单元(10),连接充电电源,用于将充电电源的输出电压调整到移动设备的充电电压;电流检测单元(12),连接于电压转换单元(10)与充电适配单元(14)之间,用于检测充电电流,充电电流用于确定与移动设备相应的充电电路。该充电电路及其控制方法可以通过一通用接口为不同品牌的移动设备充电,同时还可以通过移动设备为移动设备充电,给移动设备的使用带来了方便。
Description
充电电路及其控制方法 技术领域
本发明属于移动设备产品领域, 更具体的, 涉及一种充电电路及其控 制方法。 背景技术
UFI (移动无线路由器)类产品和 PAD (手持移动设备 )类产品越来越 受到消费者的青睐, 而这两类产品的电池容量也越来越大, 未来主流都在 4500mAh 以上, 在满足自身应用耗电的情况下, 还可能有大量电量富裕, 消费者就希望给其他移动设备充电, 比如智能手机, 智能手机受制于尺寸, 电池往往在 2000mAh以下, 这样很快就没有电了, 而如果在没有市电的情 况下, 类似野外, 则可以通过 UFI或者 PAD产品给智能手机充电, 以备紧 急使用。
目前, 市场上不同品牌的移动终端, 充电检测方法略有不同, 有的移 动终端在数据线 DP (数据正)、 DM (数据负)加上了不同电压值, 充电时 在检测到这两个电压才会显示充电, 而这种设计会造成其他移动终端不能 充电, 甚至损坏。
因此, 现有技术中, 移动终端的充电问题会因品牌不同而使用不同的 充电器, 这样则给使用者带来充电麻烦的问题, 而对于该问题, 目前尚未 提出理想的解决方案。 发明内容
本发明公开一种充电电路及其控制方法, 用于解决现有技术中移动设 备因品牌不同而不能使用同一个充电器的问题。
为了解决上述问题, 本发明的技术方案是这样实现的:
一种充电电路, 包括:
通用接口, 连接待充电的移动设备;
充电适配单元, 包括至少两类的充电电路, 所述充电适配单元连接所 述通用接口, 用于为所述移动设备提供相应的充电电路;
电压转换单元, 连接充电电源, 用于将所述充电电源的输出电压调整 到所述移动设备的充电电压;
电流检测单元, 连接于所述电压转换单元与所述充电适配单元之间, 用于检测充电电流, 所述充电电流用于确定与所述移动设备相应的充电电 路。
其中, 所述至少两类的充电电路包括第一电路与第二电路; 其中, 所 述第一电路为两个数据管脚上的电压相同的充电电路, 所述第二电路为两 个数据管脚上的电压不同的充电电路。
其中, 还包括:
控制单元, 分别连接所述电流检测单元、 充电适配单元以及电源转换 单元, 用于根据所述电流检测单元检测到的电流值确定所述移动设备充电 其中, 所述控制单元包括:
电源管理芯片, 分别连接所述充电电源与所述电流检测单元, 用于采 集所述电流值, 以及采集所述充电电源为所述控制单元提供的供电电压; 主控芯片, 连接所述电源管理芯片与所述电压转换单元, 用于根据所 述电流值发出控制指令, 控制所述电压转换单元的开启与关闭;
开关控制单元, 分别连接所述主控芯片与所述充电适配单元, 用于根 据所述电流值发出控制指令, 控制所述充电适配单元的开启与关闭。
其中, 所述通用接口为 USB接口。
一种充电电路的控制方法, 包括:
充电适配单元默认当前的第一电路为移动设备的充电电路;
所述充电适配单元判断所述第一电路的充电电压对应的第一电流值是 否大于第一阈值, 得到第一判断结果;
所述充电适配单元在所述第一判断结果为所述第一电流值大于所述第 一阈值时, 控制所述第一电路为所述移动设备充电。
其中, 在控制所述第一电路为所述移动设备充电之后, 所述方法还包 括:
判断所述第一电路的充电电压对应的第二电流值是否大于第二阈值, 得到第二判断结果;
在所述第二判断结果为所述第二电流值大于所述第二阈值时, 控制所 述第一电路继续为所述移动设备充电; 在所述判断结果为所述第二电流值 小于所述第二阈值时, 控制所述第一电路停止为所述移动设备充电。
其中, 所述第一电路的两个数据管脚上的电压相同。
其中, 在所述第一判断结果为所述第一电流值小于或等于所述第一阈 值时, 所述方法还包括:
根据所述第一电流值确定第二电路为充电电路;
控制所述第二电路为所述移动设备充电。
其中, 所述第二电路的两个数据管脚上的电压不同。
采用本发明的技术方案, 可以实现使用同一接口给所有移动设备充电, 并且完成充电后会关闭充电功能。 附图说明
图 1表示本发明实施例所述的充电电路的结构示意图;
图 2表示本发明又一实施例所述的充电电路的结构示意图;
图 3表示本发明实施例所述的充电电路的具体结构示意图;
图 4表示本发明实施例所述的充电电路的控制方法的流程图; 图 5表示本发明又一实施例所述的充电电路的控制方法的流程图。 具体实施方式
以下结合附图对本发明的实施例进行详细说明, 但是本发明可以由权 利要求限定和覆盖的多种不同方式实施。
图 1表示本发明实施例所述的充电电路的结构示意图。
参见图 1所示, 充电电路包括: 通用接口 16, 连接待充电的移动设备; 充电适配单元 14, 包括至少两类充电电路(图中未示出), 所述充电适配单 元 14连接所述通用接口 16, 用于为所述移动设备提供相应的充电电路; 电 压转换单元 10, 连接充电电源(图中未示出), 用于将所述充电电源的输出 电压调整到所述移动设备的充电电压; 电流检测单元 12, 连接于所述电压 转换单元 10与所述充电适配单元 14之间, 用于检测充电电流, 所述充电 电流用于确定与所述移动设备相应的充电电路。
通过本实施例的上述技术方案, 可以通过一个通用接口 16, 设计不同 的适配电路来满足各品牌移动设备的充电需要, 对使用者来说, 可以实现 一个充电器在手, 为各种移动设备进行充电, 提高了使用者的用户体验。
具体而言,电压转换单元 10可以采用一芯片该芯片为一个升压 DC-DC (电压转换器), 把电池电压升至充电电路所需的 5V标准电压, 并提供最 大 2A的电流输出能力, 效率在输出电压 5V, 电流 2A的情况下超过 80%。 电路检测电路 12可以通过一电阻与一芯片组成, 其中, 电阻可以为一个 30 毫欧的 Sense (感应) 电阻, 芯片可以为一个放大倍数为 25 的运放器。 1 芯片检测电阻两端的电压差, 通过电阻的阻值就可以计算出通过电阻的电 流大小, 这个电流是非常重要的参数, 用来选择充电适配电路和充电流程 结束的标志。
图 2表示本发明又一实施例所述的充电电路的结构示意图。
参见图 2所示, 充电电路还包括一控制单元 20,控制单元 20分别连接 所述电流检测单元 12、 所述充电适配单元 14以及所述电源转换单元 10, 用于根据所述电流检测单元 12检测到的电流值确定所述移动设备充电是否 完成, 从而控制所述充电适配单元 14与所述电源转换单元 12的开启与关 闭。 更具体的, 所述控制单元 20包括: 电源管理芯片 201 , 分别连接所述 充电电源 22与所述电流检测单元 12, 用于采集所述电流值, 以及采集所述 充电电源为所述控制单元 20提供的供电电压; 主控芯片 203, 连接所述电 源管理芯片 201与所述电压转换单元 10, 用于根据所述电流值发出控制指 令, 控制所述电压转换单元 10的开启与关闭; 开关控制单元 202, 分别连 接所述主控芯片 203与所述充电适配单元 14, 用于根据所述电流值发出控 制指令, 控制所述充电适配单元 14的开启与关闭。
通过本实施例的上述技术方案, 在一种移动设备的电量充足的情况下, 可以为另外一个移动设备充电, 而对移动设备没有同一品牌的限制, 同时, 本实施例的充电电路还提供一控制单元 20, 该控制单元根据电流检测单元 12的指示能够对充电适配单元 14以及电压转换单元 10进行控制, 使得在 充电完成的情况下, 自动进行关闭, 从而避免了电量的浪费。
优选地, 所述通用接口为 USB接口。
USB接口为本领域最为常用的通用接口,采用 USB接口可以最为广泛 的被各类品牌的移动终端所采用。 但是通用接口并不限于 USB接口, 其他 通用的接口在本发明中也同样被适用。
图 3表示本发明实施例所述的充电电路的具体结构示意图。
参见图 3所示, D15为一个升压 DC-DC, 4巴电池电压升至充电电路所 需的 5V标准电压, 并提供最大 2A的电流输出能力, 效率在输出电压 5V, 电流 2A的情况下超过 80%, VBAT (电池电压 ) 为电池输入端。 R2和 D1 组成一个电流检测电路, R2为一个 30毫欧的 Sense电阻, D1为一个放大
倍数为 25的运放器。 D1检测 R2两端的电压差, 而 R2的阻值就可以计算 出通过 R2的电流大小, 这个电流是非常重要的参数, 用来选择充电适配电 流和充电流程结束的标志。 三极管 VT1 , MOS管 VT3和 MOS管 VT2, 三 极管 VT4组成开关控制单元。 VT1 的集电极控制 VT3的栅极, 从而控制 VT3的导通和截止, 同理 VT2和 VT4也是这样控制的。 R72, R73, R74 和 R75组成一个分压电路, 把 5V分压到 2.6V和 1.8V分别供给 DP, DM 引脚。 VT1 , VT3控制 5V输出到分压电路, R72-R75, 而 VT2, VT3则控 制 DP, DM连通起来。
本实施例的上述技术方案, 给出一本发明充电电路的具体实施方式, 通过上述电路可知, 本发明提供的充电电路具有电路设计简单, 并且使用 同一充电接口, 完成智能识别, 给用户的使用带来便利。
图 4表示本发明实施例所述的充电电路的控制方法的流程图。
参见图 4所示, 充电电路的控制方法包括:
S301: 默认当前的第一电路为所述移动设备的充电电路;
S303: 判断所述第一电路的充电电压对应的第一电流值是否大于第一 阈值, 并得第一判断结果;
S305: 在所述第一判断结果为所述第一电流值大于所述第一阈值时, 控制所述第一电路为所述移动设备充电。
通过本实施例的上述技术方案, 通过电路的电流值来选择与移动设备 相对应的充电电路进行充电, 从而解决了移动设备因品牌不同而导致不能 共用充电设备的问题。
在本实施例中, 应用场景与其具体的电路实现方案密切相关, 提供至 少两种充电电路, 这两种电路具有不同的特点, 第一电路是两个数据管脚 上的电压相同例如, 非 IPHONE4类, 第二电路是两个数据管脚上的电压不 同, 例如 IPHONE4类;
首先主控芯片使能升压 DC-DC, 让 DC-DC输出一个 5V, 最大 2A的 电源。 第二电路是要检测到 DP, DM上有 2.6V和 1.8V才能开始充电, 而 第一电路是要在 DP上加一个电压值,在 DM上也检测到这个电压值, 才开 始充电。 若在 DM上没有检测到这个电压值, 则需要选择第一电路做充电 适配电路, 这时第一电路对应的充电电路被导通, 而第二电路对应的充电 电路截止。 图 4表示本发明又一实施例所述的充电电路的控制方法的流程 图。
参见图 5 所示, 仍第一电路与第二电路为例, 其中, 第一电路的特点 是两个数据管脚上的电压相同, 第二电路的特点是两个数据管脚上的电压 不同。 充电电路的控制方法包括如下步驟:
步驟 40: 充电开始;
步驟 41: 默认当前的第二电路为充电适配电路;
步驟 42: 检测当前充电电压对应的电流值是否大于第一阈值 500mA, 若是, 执行步驟 43 , 若否, 执行步驟 44;
步驟 43: 选择第二电路为充电适配电路进行充电;
步驟 44: 选择第一电路为充电适配电路进行充电;
步驟 45: 检测第二电路为充电适配电路的电流值是否大于第二阈值, 若是, 执行进行充电, 并返回执行步驟 45, 若否, 执行步驟 47;
步驟 46: 检测第一电路为充电适配电路的电流值是否大于第二阈值, 若是, 执行进行充电, 并返回执行步驟 46, 若否, 执行步驟 47;
步驟 47: 充电结束, 流程复位。
通过本实施例的上述技术方案, 本发明提供的充电电路的控制方法, 不仅可以对不同品牌的移动设备进行充电, 而且还可以自动控制其充电完 成后的相关工作, 提高了使用者的用户体验。
具体的, 电流检测电路检测电流, 如果电流大于 500mA, 则说明是第
二电路类移动设备充电,充电适配电路保持不变。 而电流检查进入下二级检 测流程, 实时检测电流是否大于 100mA, 如果大于 100mA继续充电, 小于 100mA则停止充电, 流程复位, 等待下次充电流程。
如果电流小于 500mA, 则说明是 IPHONE4, IPAD2类移动设备接入, 充电适配电路切换为第一电路类充电适配电路。 充电电路适配成功, 电流 检查进入下二级检测流程,实时检测电流是否大于 100mA,如果大于 100mA 继续充电, 小于 100mA则停止充电, 流程复位, 等待下次充电流程。
使用第二电路为充电适配电路作为开始充电电路原因是如果使用的是 第一电路类充电适配电路, 则在 DP,DM上加 2.6V, 1.8V电压, 这样如果 是第二电路类移动设备接入则有可能损坏设备。 而使用第二电路类充电适 配电路开始检测, 即使插入了第一电路类移动设备也不会造成损坏, 至多 不充电。
通过上述实施例可以发现, 本发明提供的充电电路及其控制方法, 具 有电路设计简约, 体积小巧, 功能稳定等优势, 而且解决了拥有大容量电 池的产品只用一个 USB接口就可以给其他类移动设备充电的功能。 扩充了 拥有大容量电池的产品的应用场景, 同一充电接口, 智能识别, 提高使用 者的用户体验。
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。
Claims
1.一种充电电路, 包括:
通用接口, 连接待充电的移动设备;
充电适配单元, 包括至少两类的充电电路, 所述充电适配单元连接所 述通用接口, 用于为所述移动设备提供相应的充电电路;
电压转换单元, 连接充电电源, 用于将所述充电电源的输出电压调整 到所述移动设备的充电电压;
电流检测单元, 连接于所述电压转换单元与所述充电适配单元之间, 用于检测充电电流, 所述充电电流用于确定与所述移动设备相应的充电电 路。
2.如权利要求 1所述的充电电路,其中, 所述至少两类的充电电路包括 第一电路与第二电路; 其中, 所述第一电路为两个数据管脚上的电压相同 的充电电路, 所述第二电路为两个数据管脚上的电压不同的充电电路。
3.如权利要求 1或 2所述的充电电路, 其中, 还包括:
控制单元, 分别连接所述电流检测单元、 充电适配单元以及电源转换 单元, 用于根据所述电流检测单元检测到的电流值确定所述移动设备充电
4.如权利要求 3所述的充电电路, 其中, 所述控制单元包括: 电源管理芯片, 分别连接所述充电电源与所述电流检测单元, 用于采 集所述电流值, 以及采集所述充电电源为所述控制单元提供的供电电压; 主控芯片, 连接所述电源管理芯片与所述电压转换单元, 用于根据所 述电流值发出控制指令, 控制所述电压转换单元的开启与关闭;
开关控制单元, 分别连接所述主控芯片与所述充电适配单元, 用于根 据所述电流值发出控制指令, 控制所述充电适配单元的开启与关闭。
5.如权利要求 1所述的充电电路, 其中, 所述通用接口为 USB接口。
6.—种充电电路的控制方法, 包括:
充电适配单元默认当前的第一电路为移动设备的充电电路;
所述充电适配单元判断所述第一电路的充电电压对应的第一电流值是 否大于第一阈值, 得到第一判断结果;
所述充电适配单元在所述第一判断结果为所述第一电流值大于所述第 一阈值时, 控制所述第一电路为所述移动设备充电。
7.如权利要求 6所述的方法, 其中,在控制所述第一电路为所述移动设 备充电之后, 所述方法还包括:
判断所述第一电路的充电电压对应的第二电流值是否大于第二阈值, 得到第二判断结果;
在所述第二判断结果为所述第二电流值大于所述第二阈值时, 控制所 述第一电路继续为所述移动设备充电; 在所述判断结果为所述第二电流值 小于所述第二阈值时, 控制所述第一电路停止为所述移动设备充电。
8.如权利要求 6或 7所述的方法,其中, 所述第一电路的两个数据管脚 上的电压相同。
9.如权利要求 8所述的方法, 其中,在所述第一判断结果为所述第一电 流值小于或等于所述第一阈值时, 所述方法还包括:
根据所述第一电流值确定第二电路为充电电路;
控制所述第二电路为所述移动设备充电。
10.如权利要求 9所述的方法, 其中, 所述第二电路的两个数据管脚上 的电压不同。
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US9509150B2 (en) | 2016-11-29 |
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