CN103904703B - Method for judging power supply capacity of charging equipment - Google Patents
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Abstract
Description
技术领域 technical field
本发明是有关于一种充电设备供电能力判别方法，尤其是经由正数据接脚及负数据接脚的电压大小以获得充电设备的大电流供电能力。The invention relates to a method for judging the power supply capability of a charging device, in particular to obtain the large current power supply capability of the charging device through the voltage of the positive data pin and the negative data pin.
背景技术 Background technique
由于可携式电子产品日益普及，而电源一般是使用内建的电池，包括一次电池及二次电池，尤其是在节能减碳的环保风潮下，具有可多次充电循环使用的二次电池，比如锂电池，已逐渐普遍。不过，受限于本身电池的容量，比如手机的充电电池，使用者需要经常充电以补充电力而维持正常运作，但往往会找不到电源可随时充电，导致使用上很大的不方便。Due to the increasing popularity of portable electronic products, the power supply generally uses built-in batteries, including primary batteries and secondary batteries. For example, lithium batteries have gradually become common. However, limited by the capacity of its own battery, such as the rechargeable battery of a mobile phone, users need to recharge it frequently to supplement power to maintain normal operation, but they often cannot find a power source to charge at any time, resulting in great inconvenience in use.
此外，一般的电子产品是使用通用串行总线(UniversalSerialBus，USB)当作充电接口，而USB的供电电压为5V，最大可供应电流只有500mA。In addition, common electronic products use a universal serial bus (Universal Serial Bus, USB) as a charging interface, and the power supply voltage of the USB is 5V, and the maximum supply current is only 500mA.
然而，现有技术的缺点在于充电电流愈小时，所需的充电时间便愈长，反之，充电电流愈高，则充电时间便愈短，而USB的500mA最大电流对于一般电子产品是相当低，所以通常需要很长的充电时间，比如一天或数天，造成使用上的不方便。但是受限于现有的规范，即使充电设备本身具有更大的电流供应能力，也无法将具有提供大电流供电能力的信息传送至被充电设备。However, the disadvantage of the prior art is that the smaller the charging current is, the longer the charging time is required; on the contrary, the higher the charging current is, the shorter the charging time is, and the maximum current of 500mA of USB is quite low for general electronic products. Therefore, it usually takes a long charging time, such as one or several days, which causes inconvenience in use. However, limited by the existing specifications, even if the charging device itself has a greater current supply capability, it cannot transmit the information that it has the capability to provide a large current supply to the charged device.
因此，需要一种充电设备供电能力判别方法，利用连接接口的正数据接脚及负数据接脚的电压大小而获得充电设备的供电能力，尤其是大于500mA的供电能力，进而解决上述现有技术的问题。Therefore, there is a need for a method for judging the power supply capability of a charging device, which uses the voltage of the positive data pin and the negative data pin of the connection interface to obtain the power supply capability of the charging device, especially a power supply capability greater than 500mA, and then solve the above-mentioned prior art The problem.
发明内容 Contents of the invention
本发明的主要目的在于提供一种充电设备供电能力判别方法，包括：被充电设备经由连接接口而连接至充电设备；经预设等待时间后，由供电判别控制器判别连接接口的正数据接脚及负数据接脚是否为高阻抗；如果是高阻抗，则具有第一供电能力；如果不是高阻抗，则判别正数据接脚及负数据接脚是否为短路；如果是短路，则具有第二供电能力；如果不是短路，则判别正数据接脚及负数据接脚是否为第一电压；如果是第一电压，则具有第三供电能力；如果不是第一电压，则判别正数据接脚及负数据接脚是否分别为第二电压及第三电压；以及如果分别是第二电压及第三电压，则具有第四供电能力。The main purpose of the present invention is to provide a method for judging the power supply capability of a charging device, including: the device to be charged is connected to the charging device via a connection interface; after a preset waiting time, the power supply judging controller judges the positive data pin of the connection interface And whether the negative data pin is high impedance; if it is high impedance, it has the first power supply capability; if it is not high impedance, then judge whether the positive data pin and the negative data pin are short-circuited; if it is short circuit, it has the second Power supply capability; if it is not a short circuit, then judge whether the positive data pin and the negative data pin are the first voltage; if it is the first voltage, then have the third power supply capability; if not the first voltage, then judge whether the positive data pin and the negative data pin are the first voltage; Whether the negative data pins are respectively the second voltage and the third voltage; and if they are respectively the second voltage and the third voltage, have a fourth power supply capability.
因此，本发明可依据正数据接脚及负数据接脚的电压大小，而判别出充电设备的供电能力，尤其是可提供超过500mA的大电流。Therefore, the present invention can judge the power supply capability of the charging device according to the voltage of the positive data pin and the negative data pin, and especially can provide a large current exceeding 500mA.
附图说明 Description of drawings
图1为显示本发明充电设备供电能力判别方法的操作流程示意图；FIG. 1 is a schematic diagram showing the operation flow of the method for judging the power supply capability of a charging device according to the present invention;
图2为显示本发明充电设备供电能力判别方法的系统示意图。FIG. 2 is a system diagram showing a method for judging the power supply capability of a charging device according to the present invention.
具体实施方式 detailed description
以下配合图式及元件符号对本发明的实施方式做更详细的说明，以使熟悉本领域的技术人员在研读本说明书后能据以实施。The implementation of the present invention will be described in more detail below with reference to the figures and symbol numbers, so that those skilled in the art can implement it after studying this specification.
参考图1，为本发明充电设备供电能力判别方法的操作流程示意图。如图1所示，本发明的充电设备供电能力判别方法包括步骤S10至S51，其主要特征在于被充电设备连接充电设备时，被充电设备可主动判别充电设备的供电能力，而为进一步说明本发明的特征，请配合图2，为本发明供电判别方法的系统示意图。Referring to FIG. 1 , it is a schematic diagram of the operation flow of the method for judging the power supply capability of a charging device according to the present invention. As shown in Figure 1, the method for judging the power supply capability of a charging device according to the present invention includes steps S10 to S51, and its main feature is that when the device to be charged is connected to the charging device, the device to be charged can actively judge the power supply capability of the charging device, and to further illustrate this The characteristics of the invention, please refer to FIG. 2 , which is a schematic diagram of the system of the power supply discrimination method of the present invention.
先参考图2，被充电设备1及充电设备(图未示)是藉连接接口3而连接，其中被充电设备1可包括具有上述连接接口3的手机、平板电脑、笔记本电脑、可携式影音播放器、充电电池、电动刮胡刀、电动牙刷、电动按摩器，而充电设备可包括连接接口3的电池组、直流输出变压器、大容量备用电源。此外，连接接口3至少包括电源接脚VCC、正数据接脚D+、负数据接脚D-及接地接脚GND，而较佳的，连接接口3可为通用串行总线(UniversalSerialBus，USB)或其它串行总线。Referring first to FIG. 2, the charged device 1 and the charging device (not shown) are connected by a connection interface 3, wherein the charged device 1 may include a mobile phone, a tablet computer, a notebook computer, a portable audio-visual device having the above-mentioned connection interface 3 player, rechargeable battery, electric shaver, electric toothbrush, electric massager, and the charging device may include a battery pack connected to the interface 3, a DC output transformer, and a large-capacity backup power supply. In addition, the connection interface 3 at least includes a power supply pin VCC, a positive data pin D+, a negative data pin D-, and a ground pin GND. Preferably, the connection interface 3 can be a Universal Serial Bus (Universal Serial Bus, USB) or other serial buses.
进一步地，被充电设备1可至少包括接口控制器10、供电判别控制器20及功能控制器30，其中接口控制器10及供电判别控制器20电气连接至连接接口3，且接口控制器10是用以经接口控制器10而传送数据至充电设备并接收来自充电设备的数据，比如当作USB装置端控制器(DeviceController)，而供电判别控制器20是用以判别充电设备的供电能力，并将判别结果传送至接口控制器10，而功能控制器30是电气连接至接口控制器10，用以实现特定功能，比如手机中通信芯片的通信功能或平板电脑的中央处理器的高速运算处理功能。回到图1，本发明的充电设备供电能力判别方法是由步骤S10开始，被充电设备1经由连接接口3而连接至充电设备。之后，进入步骤S10，在经预设等待时间后，由供电判别控制器20判别正数据接脚D+及负数据接脚D-是否为高阻抗，如果是高阻抗，则进入步骤S21，决定充电设备具有第一供电能力，而如果不是高阻抗，则进入步骤S30。Further, the charged device 1 may at least include an interface controller 10, a power supply discrimination controller 20 and a function controller 30, wherein the interface controller 10 and the power supply discrimination controller 20 are electrically connected to the connection interface 3, and the interface controller 10 is Used to transmit data to the charging equipment and receive data from the charging equipment through the interface controller 10, such as a USB device controller (DeviceController), and the power supply discrimination controller 20 is used to determine the power supply capability of the charging equipment, and The judgment result is sent to the interface controller 10, and the function controller 30 is electrically connected to the interface controller 10 to realize specific functions, such as the communication function of the communication chip in the mobile phone or the high-speed computing processing function of the central processing unit of the tablet computer . Referring back to FIG. 1 , the method for judging the power supply capability of a charging device in the present invention starts from step S10 , and the device to be charged 1 is connected to the charging device via the connection interface 3 . Afterwards, enter step S10, after the preset waiting time, the power supply discrimination controller 20 determines whether the positive data pin D+ and the negative data pin D- are high impedance, if it is high impedance, then enter step S21, and decide to charge The device has the first power supply capability, and if it is not high impedance, go to step S30.
在步骤S30中，在经预设等待时间后，由供电判别控制器20判别正数据接脚D+及负数据接脚D-是否为短路，如果是短路，进入步骤S31，决定充电设备具有第二供电能力，而如果不是短路，进入步骤S40。In step S30, after the preset waiting time, the power supply discrimination controller 20 judges whether the positive data pin D+ and the negative data pin D- are short-circuited. power supply capability, and if it is not a short circuit, go to step S40.
在步骤S40中，在经预设等待时间后，由供电判别控制器20判别正数据接脚D+及负数据接脚D-是否皆为第一电压，如果是第一电压，则进入步骤S41，决定充电设备具有第三供电能力，而如果不是第一电压，进入步骤S50。In step S40, after the preset waiting time, the power supply judging controller 20 judges whether the positive data pin D+ and the negative data pin D- are both at the first voltage, and if it is the first voltage, go to step S41, It is determined that the charging device has the third power supply capability, and if it is not the first voltage, go to step S50.
在步骤S50中，在经预设等待时间后，由供电判别控制器20判别正数据接脚D+及负数据接脚D-是否分别为第二电压及第三电压，如果是，则进入步骤S51，决定充电设备具有第四供电能力。In step S50, after a preset waiting time, the power supply judging controller 20 judges whether the positive data pin D+ and the negative data pin D- are respectively the second voltage and the third voltage, and if so, proceed to step S51 , it is determined that the charging device has a fourth power supply capability.
具体而言，第一供电能力可为供应0.5A以下电流，第二供电能力可为供应0.5A至1.0A电流，第三供电能力可为供应1.0A至1.5A电流，而第四供电能力可为供应1.5A以上电流，或者第三供电能力及第四供电能力可为供应1.5A以上电流。此外，上述第一电压可为1.0V至1.5V，该第二电压可为2.5V至3.0V，而该第三电压可为1.8V至2.4V。Specifically, the first power supply capability can supply current below 0.5A, the second power supply capability can supply current from 0.5A to 1.0A, the third power supply capability can supply current from 1.0A to 1.5A, and the fourth power supply capability can supply To supply a current above 1.5A, or the third power supply capability and the fourth power supply capability may supply a current above 1.5A. In addition, the above-mentioned first voltage may be 1.0V to 1.5V, the second voltage may be 2.5V to 3.0V, and the third voltage may be 1.8V to 2.4V.
上述接口控制器10、供电判别控制器20及功能控制器30可为微处理器、中央处理器或由多个分立的电子组件所构成的电子电路，或者可利用微处理器、中央处理器或分立的电子电路实现整个被充电设备1。The above-mentioned interface controller 10, power supply discrimination controller 20 and function controller 30 can be microprocessors, central processing units or electronic circuits composed of a plurality of discrete electronic components, or can utilize microprocessors, central processing units or A separate electronic circuit realizes the entire charged device 1 .
综上所述，本发明的特点在于被充电设备可藉正数据接脚D+及负数据接脚D-的电压大小以判别并决定充电设备的供电能力。因此，本发明的方法可应用于具有特定电流需求的电子装置，比如手机、平板电脑、笔记本电脑、可携式影音播放器，可用以判别充电设备的供电能力是否符合所需，藉以改善整体充电及用电效率。To sum up, the feature of the present invention is that the charged device can judge and determine the power supply capability of the charging device by the voltage of the positive data pin D+ and the negative data pin D-. Therefore, the method of the present invention can be applied to electronic devices with specific current requirements, such as mobile phones, tablet computers, notebook computers, and portable audio-visual players, and can be used to determine whether the power supply capacity of the charging device meets the requirements, so as to improve the overall charging and power efficiency.
以上所述仅为用以解释本发明的较佳实施例，并非企图据以对本发明做任何形式上的限制。因此，凡有在相同的发明精神下所作有关本发明的任何修饰或变更，皆仍应包括在本发明意图保护的范畴。The above descriptions are only preferred embodiments for explaining the present invention, and are not intended to limit the present invention in any form. Therefore, any modification or change related to the present invention made under the same spirit of the invention should still be included in the scope of protection intended by the present invention.
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| US5861729A (en) * | 1992-11-25 | 1999-01-19 | Fujitsu Limited | Charger for portable terminal equipment having on-hook/off-hook detecting means and battery identifying means |
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| TW200644376A (en) * | 2005-06-01 | 2006-12-16 | Asustek Comp Inc | Method and charging apparatus controlled by computer for converting input power into required charging voltage and charging current |
| CN1925257A (en) * | 2005-08-31 | 2007-03-07 | 索尼株式会社 | Dedicated power supply apparatus, terminal. power supply system, and power supply method |
| CN101026309A (en) * | 2006-02-16 | 2007-08-29 | 舒米特微电子公司 | Switching battery charging systems and methods |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5861729A (en) * | 1992-11-25 | 1999-01-19 | Fujitsu Limited | Charger for portable terminal equipment having on-hook/off-hook detecting means and battery identifying means |
| CN1222263A (en) * | 1996-06-11 | 1999-07-07 | 艾利森公司 | Appts. and method for identifying and charging batteries of different types |
| TW200644376A (en) * | 2005-06-01 | 2006-12-16 | Asustek Comp Inc | Method and charging apparatus controlled by computer for converting input power into required charging voltage and charging current |
| CN1925257A (en) * | 2005-08-31 | 2007-03-07 | 索尼株式会社 | Dedicated power supply apparatus, terminal. power supply system, and power supply method |
| CN101026309A (en) * | 2006-02-16 | 2007-08-29 | 舒米特微电子公司 | Switching battery charging systems and methods |
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