WO2016138835A1 - 一种改进的电源管理装置 - Google Patents
一种改进的电源管理装置 Download PDFInfo
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- WO2016138835A1 WO2016138835A1 PCT/CN2016/074716 CN2016074716W WO2016138835A1 WO 2016138835 A1 WO2016138835 A1 WO 2016138835A1 CN 2016074716 W CN2016074716 W CN 2016074716W WO 2016138835 A1 WO2016138835 A1 WO 2016138835A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
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- the present invention relates to the field of power circuit technologies, and more particularly to an improved power management device.
- the power supply circuit of electronic products is an important part of the whole product. It has a simple or complex topology. Different products will match different electrical properties according to the market, such as short circuit protection, over current protection, over temperature protection, automatic regulation, with timing control. And so on, the more power conversion chips that function, the higher the integration, and the corresponding cost will increase. In addition, most of the electronic products (such as set-top boxes, mobile phones, routers, etc.) damage, from the maintenance statistics, power system failures and damage accounted for the vast majority. Common interface plug and short circuit, power output instability, power supply power mismatch, etc. are the main causes of damage. In view of this, overcoming the deficiencies of the prior art is an urgent problem to be solved in the art.
- the technical problem to be solved by the present invention is to overcome the problem that the power output of the power supply circuit is unstable under the control of the power supply circuit in the prior art, and the power usage power is not matched.
- the present invention provides an improved power management apparatus including a controller, an output control adjustment module, a power conversion module, and an overcurrent protection module, specifically:
- the controller is connected to the output control adjustment module, and the controller is configured to send a signal for adjusting an output voltage or adjusting a current limiting threshold of the overcurrent protection module to the output control adjustment module;
- the power conversion module is configured to complete circuit adjustment corresponding to the output voltage or the current limiting threshold after receiving the signal for adjusting the output voltage or adjusting the current limiting threshold of the overcurrent protection module; the power conversion module is based on The power supply is converted to output a stable voltage; the overcurrent protection module is connected to the power conversion module, and is configured to stop the voltage output of the power conversion module after the output current of the power management device exceeds a preset value.
- the power management device further includes a voltage monitoring module and a current monitoring module, specifically:
- the controller further connects the power conversion module through a voltage monitoring module and a current monitoring module to monitor an output voltage and an output current of the power conversion module.
- the power conversion module includes a voltage stabilization module, specifically:
- the voltage stabilizing module is composed of an integrated power amplifier U1, and the forward input port of the integrated power amplifier U1 is connected to the series resistor R1 and the resistor R2 to be grounded; a Zener diode is connected in parallel across the resistor R2, and the voltage regulator is connected through the resistor
- the reference voltage VREF provided by the diode generates a forward voltage of the integrated power amplifier U1;
- the output port of the power management device is connected in series with the resistor R3 and the resistor R4, and is grounded by connecting the inverting input port of the integrated power amplifier U1 Between the resistor R3 and the resistor R4, thereby forming a voltage negative feedback circuit; when the output of the power management device becomes high due to instability; the voltage negative feedback circuit ensures the integrated power amplifier U1 when the output voltage fluctuates The input is adjusted accordingly to output a stable voltage.
- the power conversion module includes a composite voltage follower, specifically:
- a composite voltage follower is composed of two semiconductor transistors Q1 and Q2, wherein the emitter of the semiconductor transistor Q2 is connected to the base of the semiconductor transistor Q1, and the collector of the semiconductor transistor Q1 is connected to the collector of the semiconductor transistor Q2 and serves as a composite voltage follower.
- the collector, the base of the semiconductor transistor Q2 serves as the base of the composite voltage follower, and the emitter of the semiconductor transistor Q1 serves as the emitter of the composite voltage follower; the composite voltage follower is connected to the common base by means of a common base connection
- the output port of the voltage stabilizing module and the voltage output by the semiconductor transistor Q1 are the output voltage of the power management device.
- the overcurrent protection module includes a current limiting circuit, and an output port of the current limiting circuit is connected to an output port of the voltage stabilizing module, specifically:
- the current limiting circuit is composed of an integrated power amplifier U2, and a forward input port of the integrated power amplifier U2 is connected to an output port of the power management device; an inverting input port of the integrated power amplifier U2 passes through a resistor R5 and a resistor R6.
- the source provides a steady current and produces a fixed voltage drop;
- the resistor R5 is connected to the interface of the resistor R6.
- the voltage is increased; when the voltage drop generated by the resistor R5 is fixed, the voltage of the inverting input port of the integrated power amplifier U2 is increased, so the integrated power amplifier U2 outputs a negative voltage; when the integrated power amplifier U2 When the generated negative voltage is the same as the positive voltage generated by the integrated power amplifier U1, the output voltage of the power management device is zero.
- a light emitting diode is connected in series between the integrated power amplifier U1 and the integrated power amplifier U2, and the positive terminal of the light emitting diode is connected to the output interface of the integrated power amplifier U1, specifically:
- the light emitting diode When the voltage difference between the output voltage of the integrated power amplifier U2 and the output voltage of the integrated power amplifier U1 exceeds the operating voltage of the light emitting diode, the light emitting diode emits light indicating that the current power management device output current is too large.
- the voltage monitoring module specifically includes:
- a voltage follower composed of an integrated operational amplifier, the voltage of the output port of the power management device is divided by a resistor R7 and a resistor R8 to input a signal as a forward input port of the voltage follower; the voltage follower The output voltage is passed to the analog to digital conversion interface of the controller to complete voltage monitoring of the power conversion module.
- the current monitoring module specifically includes:
- the current to be monitored is calculated by acquiring the voltage drop of the sampling resistor R6 on the output voltage of the power management device.
- the controller controls the output control adjustment module to disconnect the power supply of the power conversion module when the current returned by the current monitoring module is out of the safe range.
- the power management device further includes a display module, configured to calculate a current output power according to a voltage value fed back by the voltage monitoring module and a current value returned by the current monitoring module, and calculate the current value, the voltage value, and The output power is displayed in the display module.
- a display module configured to calculate a current output power according to a voltage value fed back by the voltage monitoring module and a current value returned by the current monitoring module, and calculate the current value, the voltage value, and The output power is displayed in the display module.
- the present invention has the beneficial effects that the power management device is improved, and a power conversion module and an overcurrent protection module with a voltage stabilization function are added, thereby solving the existing In the technology, the power supply output is unstable, the power supply power is not matched, and the power supply system is easily broken.
- FIG. 1 is a schematic structural diagram of an improved power management apparatus according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of a power conversion module in an improved power management apparatus according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a current limiting module in an improved power management apparatus according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of a voltage monitoring module and a current monitoring module in an improved power management apparatus according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of an improved power management apparatus according to an embodiment of the present invention.
- Embodiment 1 of the present invention provides an improved power management apparatus, characterized in that: the power management device package controller 1, the output control adjustment module 2, the power conversion module 3, and the overcurrent protection module 4, specifically:
- the controller 1 is connected to the output control adjustment module 2, and the controller 1 is configured to send a signal for adjusting an output voltage or adjusting a current limiting threshold of the overcurrent protection module 4 to the output control adjustment module 2;
- the control adjustment module 2 is connected to the power conversion module 3, and is configured to complete the output voltage or limit after receiving the signal for adjusting the output voltage or adjusting the current limiting threshold of the overcurrent protection module 4. Circuit adjustment corresponding to the flow threshold;
- the power conversion module 3 outputs a stable voltage after being converted based on the power supply
- the overcurrent protection module 4 is connected to the power conversion module 3 for stopping the voltage output of the power conversion module 3 after the output current of the power management device exceeds a preset value.
- the invention improves the power management device, and adds a power conversion module 3 and an overcurrent protection module 4 with a voltage stabilization function, thereby solving the power supply caused by the power supply output being unstable and the power supply power mismatching in the prior art.
- the system is prone to failure.
- the power management device further includes a voltage monitoring module 6 and a current monitoring module 5, specifically:
- the controller 1 is further connected to the power conversion module 3 through the voltage monitoring module 6 and the current monitoring module 5 to monitor the output voltage and output current of the power conversion module 3.
- the power management device further includes a voltage monitoring module 6 and a current monitoring module 5, and the present embodiment further has an expansion scheme.
- the controller 1 obtains the current returned by the current monitoring module 5 beyond the security. In the range, the output control adjustment module is controlled to disconnect the power supply of the power conversion module.
- the power management device further includes a display module 7 configured to calculate a current output power according to a voltage value fed back by the voltage monitoring module and a current value returned by the current monitoring module 5 And displaying the current value, the voltage value, and the output power in the display module 7.
- a display module 7 configured to calculate a current output power according to a voltage value fed back by the voltage monitoring module and a current value returned by the current monitoring module 5 And displaying the current value, the voltage value, and the output power in the display module 7.
- the power conversion module 3 includes a voltage stabilization module, specifically:
- the voltage stabilizing module is composed of an integrated power amplifier U1, and the forward input port of the integrated power amplifier U1 is connected to the series resistor R1 and the resistor R2 and grounded;
- a Zener diode is connected in parallel across the resistor R2, and the reference provided by the Zener diode a voltage VREF, generating a forward voltage of the integrated power amplifier U1;
- the output port of the power management device is connected to the series resistor R3 and the resistor R4 and grounded.
- the inverting input port of the integrated power amplifier U1 is connected between the resistor R3 and the resistor R4 to form a voltage negative feedback circuit.
- the voltage negative feedback circuit ensures that the input of the integrated power amplifier U1 is adjusted accordingly to output a stable voltage.
- An example of a specific voltage negative feedback adjustment is that the voltage of the inverting input port of the integrated power amplifier U1 is also increased when the voltage negative feedback circuit is supplied, so that the output voltage of the integrated power amplifier U1 is decreased. Thereby, the output voltage of the power management device is lowered.
- the power conversion module in order to improve the load performance, can also be designed to add a composite voltage follower, specifically:
- a composite voltage follower is composed of two semiconductor transistors Q1 and Q2, wherein the emitter of the semiconductor transistor Q2 is connected to the base of the semiconductor transistor Q1, and the collector of the semiconductor transistor Q1 is connected to the collector of the semiconductor transistor Q2 and serves as a composite voltage follower.
- the collector, the base of the semiconductor transistor Q2 serves as the base of the composite voltage follower, and the emitter of the semiconductor transistor Q1 serves as the emitter of the composite voltage follower; the composite voltage follower is connected to the common base by means of a common base connection
- the output port of the voltage stabilizing module and the voltage output by the semiconductor transistor Q1 are the output voltage of the power management device.
- the overcurrent protection module 4 includes a current limiting circuit as shown in FIG. 3, and an output port of the current limiting circuit is connected to an output port of the voltage stabilizing module.
- the current limiting circuit is composed of an integrated power amplifier U2, and a forward input port of the integrated power amplifier U2 is connected to an output port of the power management device;
- the inverting input port of the integrated power amplifier U2 is connected to the device through a resistor R5 and a resistor R6.
- the voltage drop generated by the resistor R6 increases; due to the existence of the voltage stabilizing module, the output voltage of the power management device does not change, and the resistor R5 is connected to the interface of the resistor R6.
- the voltage is increased; in the case where the voltage drop generated by the resistor R5 is fixed, the voltage of the inverting input port of the integrated power amplifier U2 is increased, so that the integrated power amplifier U2 outputs a negative voltage;
- the output voltage of the power management device is zero.
- the embodiment in order to be able to alert the operator to the situation that the output current exceeds the standard, includes, in an extension, a series connection between the integrated power amplifier U1 and the integrated power amplifier U2. a diode, a positive terminal of the light emitting diode and an output interface of the integrated power amplifier U1, specifically:
- the light emitting diode When the voltage difference between the output voltage of the integrated power amplifier U2 and the output voltage of the integrated power amplifier U1 exceeds the operating voltage of the light emitting diode, the light emitting diode emits light indicating that the current power management device output current is too large.
- the voltage monitoring module 6 specifically includes:
- a voltage follower composed of the integrated operational amplifier U3, the voltage of the output port of the power management device is divided by the resistor R7 and the resistor R8, and is input as a forward input port of the voltage follower;
- the output voltage of the voltage follower is transmitted to the analog to digital conversion interface of the controller 1, thereby completing voltage monitoring of the power conversion module.
- the current monitoring module 5 specifically includes:
- the output power of the power management device is obtained
- the voltage drop across the sense resistor R6 is calculated to generate the current to be monitored.
- FIG. 5 is a schematic structural diagram of an improved power management device according to an embodiment of the present invention, which includes various modules of Embodiments 2 to 4, and discloses a manner in which they are implemented together.
- various embodiments of the invention for example:
- the control of the voltage conversion of the power conversion module 3 in Embodiment 2 can be realized by replacing the resistor R1 with the controllable resistance device Rx connected to the controller I/O interface.
- the output voltage decreases as Rx increases, and decreases with increasing.
- the current limiting circuit for the overcurrent protection module 4 in Embodiment 3 can be realized by replacing the resistor R5 with a controllable resistance device Ry connected by a controller I/O interface.
- the allowable output current decreases as Ry increases, and decreases with increasing.
Abstract
一种改进的电源管理装置，包括控制器(1)、输出控制调节模块(2)、电源转换模块(3)和过流保护模块(4)。控制器(1)连接输出控制调节模块(2)，控制器(1)用于发送调节输出电压或者调节过流保护模块的限流阈值的信号给输出控制调节模块(2)；输出控制调节模块(2)连接电源转换模块(3)，用于在接收到调节输出电压或者调节过流保护模块的限流阈值的信号后，完成信号所对应的电路的调整；电源转换模块(3)基于供电电源，经过转换后输出一个稳定的电压；过流保护模块(4)连接电源转换模块(3)，用于在输出电流超过预设值后，停止电压输出。该电源管理装置能够解决由于电源输出不稳定造成的电源系统容易故障的问题。
Description
本发明涉及电源电路技术领域，特别是涉及一种改进的电源管理装置。
电子产品的电源电路是整个产品重要的一部分，有着简单或复杂的拓扑，不同的产品会根据市场匹配不同的电气性能，如短路保护、过流保护、过温保护、自动调节、带有时序控制等等，功能越多的电源转换芯片，集成度也就越高，对应的成本也会增加。另外，大多数的电子产品(如机顶盒、手机、路由器等等)的损坏，从维修统计数据来看，电源系统故障和损坏占了绝大部分。常见的接口插拔短路，电源输出不稳定，电源使用功率不匹配等等都是导致出现损坏的主要原因。鉴于此，克服该现有技术所存在的缺陷是本技术领域亟待解决的问题。
【发明内容】
本发明要解决的技术问题是克服现有技术中电源电路控制下电源输出不稳定，电源使用功率不匹配的问题。
本发明提供了一种改进的电源管理装置，所述电源管理装置包括控制器、输出控制调节模块、电源转换模块和过流保护模块，具体的：
所述控制器连接所述输出控制调节模块，所述控制器用于发送调节输出电压或者调节过流保护模块的限流阈值的信号给所述输出控制调节模块时；所述输出控制调节模块连接所述电源转换模块，用于在接收到所述调节输出电压或者调节过流保护模块的限流阈值的信号后，完成所述输出电压或者限流阈值所对应的电路调整；所述电源转换模块基于供电电源，经过转换后输出一个稳定的电压；所述过流保护模块连接所述电源转换模块，用于在电源管理装置的输出电流超过预设值后，停止电源转换模块的电压输出。
优选的，所述电源管理装置还包括电压监测模块和电流监测模块，具体的：
所述控制器还通过电压监测模块和电流监测模块连接所述电源转换模块，从而对所述电源转换模块的输出电压和输出电流进行监测。
优选的，所述电源转换模块中包括稳压模块，具体的：
所述稳压模块由集成功率放大器U1构成，所述集成功率放大器U1的正向输入端口串联电阻R1和电阻R2后接地；在所述电阻R2两端并联一个稳压二极管，通过所述稳压二极管提供的参考电压VREF，生成所述集成功率放大器U1的正向电压；所述电源管理装置的输出端口串联电阻R3和电阻R4后接地，通过将所述集成功率放大器U1的反相输入端口连接到电阻R3和电阻R4之间，从而形成电压负反馈电路；当电源管理装置的输出因为不稳定因素变高；在输出电压有波动时，所述电压负反馈电路保证所述集成功率放大器U1的输入做出相应调整，以便输出稳定的电压。
优选的，所述电源转换模块中包括复合电压跟随器，具体的：
由两个半导体三极管Q1和Q2组成复合电压跟随器，其中半导体三极管Q2的发射极连接半导体三极管Q1的基极，半导体三极管Q1的集电极和半导体三极管Q2的集电极相连并作为复合电压跟随器的集电极，半导体三极管Q2的基极则作为复合电压跟随器的基极，半导体三极管Q1的发射极作为复合电压跟随器的发射极；利用共基极的连接方式将所述复合电压跟随器连接到所述稳压模块的输出端口，半导体三极管Q1输出的电压即为所述电源管理装置的输出电压。
优选的，所述过流保护模块包括一个限流电路，所述限流电路的输出端口和所述稳压模块的输出端口相连，具体的：
所述限流电路由集成功率放大器U2构成，所述集成功率放大器U2的正向输入端口连接所述电源管理装置的输出端口；所述集成功率放大器U2的反相输入端口通过电阻R5和电阻R6连接到所述电源管理装置的输出端口；其中，电阻R6串联在所述电源管理装置的输出线路上，和所述电源管理装置的输出电流形成一个可变压降；其中，电阻R5由一电流源提供稳定电流，产生固定的压降；
当所述电源管理装置的输出电流形变大时，电阻R6产生的压降增大；由于所述稳压模块的存在，此时电源管理装置的输出电压不变，于是电阻R5连接电阻R6的接口电压便要增大；在所述电阻R5产生压降固定情况下，所述集成功率放大器U2的反相输入端口电压增加，于是所述集成功率放大器U2输出负电压；当所述集成功率放大器U2产生的负电压和所述集成功率放大器U1产生的正电压相同时，所述电源管理装置的输出电压为零。
优选的，所述集成功率放大器U1和集成功率放大器U2之间串联一发光二极管，所述发光二极管的正极接口和所述集成功率放大器U1的输出接口连接，具体的：
在所述集成功率放大器U2输出电压和所述集成功率放大器U1输出电压的压差超过所述发光二极管的工作电压时，所述发光二级管发光指示当前电源管理装置输出电流过大。
优选的，所述电压监测模块具体包括：
由集成运算放大器构成的电压跟随器，将所述电源管理装置输出端口的电压，经过电阻R7和电阻R8分压后，作为所述电压跟随器的正向输入端口输入信号；所述电压跟随器的输出电压传递给控制器的模数转换接口，从而完成对所述电源转换模块的电压监测。
优选的，所述电流监测模块具体包括：
根据集成运算放大器构成的减法器，通过获取所述电源管理装置输出电压上的采样电阻R6的压降来计算生成所要监测的电流。
优选的，所述控制器在获取到所述电流监测模块返回的电流超出安全范围时，控制所述输出控制调节模块断开电源转换模块的电源供电。
优选的，所述电源管理装置还包括显示模块，用于根据电压监测模块反馈的电压值和所述电流监测模块返回的电流值，计算当前的输出功率，并将所述电流值、电压值和输出功率显示在所述显示模块中。
与现有技术相比，本发明的有益效果在于：本发明对电源管理装置进行了改进，增设了具有稳压功能的电源转换模块和过流保护模块，从而解决了现有
技术中由于电源输出不稳定，电源使用功率不匹配，造成的电源系统容易故障的问题。
图1是本发明实施例提供的一种改进的电源管理装置的结构示意图；
图2是本发明实施例提供的一种改进的电源管理装置中电源转换模块的结构示意图；
图3是本发明实施例提供的一种改进的电源管理装置中限流模块的结构示意图；
图4是本发明实施例提供的一种改进的电源管理装置中电压监测模块和电流监测模块的结构示意图；
图5是本发明实施例提供的一种改进的电源管理装置的结构示意图。
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。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。
此外，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
实施例1:
本发明实施例1提供了一种改进的电源管理装置，其特征在于，所述电源管理装置包控制器1、输出控制调节模块2、电源转换模块3和过流保护模块4，具体的：
所述控制器1连接所述输出控制调节模块2，所述控制器1用于发送调节输出电压或者调节过流保护模块4的限流阈值的信号给所述输出控制调节模块2；所述输出控制调节模块2连接所述电源转换模块3，用于在接收到所述调节输出电压或者调节过流保护模块4的限流阈值的信号后，完成所述输出电压或者限
流阈值所对应的电路调整；
所述电源转换模块3基于供电电源，经过转换后输出一个稳定的电压；
所述过流保护模块4连接所述电源转换模块3，用于在电源管理装置的输出电流超过预设值后，停止电源转换模块3的电压输出。
本发明对电源管理装置进行了改进，增设了具有稳压功能的电源转换模块3和过流保护模块4，从而解决了现有技术中由于电源输出不稳定，电源使用功率不匹配，造成的电源系统容易故障的问题。
为了进一步的提高本发明提出的电源管理装置的可靠性，基于本实施例提出了一种扩展方案，其中，所述电源管理装置还包括电压监测模块6和电流监测模块5，具体的：
所述控制器1还通过电压监测模块6和电流监测模块5连接所述电源转换模块3，从而对所述电源转换模块3的输出电压和输出电流进行监测。
根据上述电源管理装置还包括电压监测模块6和电流监测模块5扩展方案基础上，本实施例还存在一种扩展方案，所述控制器1在获取到所述电流监测模块5返回的电流超出安全范围时，控制所述输出控制调节模块断开电源转换模块的电源供电。
优选的，本实施例存在一种实现方式，所述电源管理装置还包括显示模块7，用于根据电压监测模块反馈的电压值和所述电流监测模块5返回的电流值，计算当前的输出功率，并将所述电流值、电压值和输出功率显示在所述显示模块7中。
实施例2:
本实施例基于实施例1中公开的电源管理装置基础上实现，通过具体的实例描述如何实现所述电源转换模块3。在本实施例中，如图2所示，所述电源转换模块3中包括稳压模块，具体的：
所述稳压模块由集成功率放大器U1构成，所述集成功率放大器U1的正向输入端口串联电阻R1和电阻R2后接地；
在所述电阻R2两端并联一个稳压二极管，通过所述稳压二极管提供的参考
电压VREF，生成所述集成功率放大器U1的正向电压；
所述电源管理装置的输出端口串联电阻R3和电阻R4后接地，通过将所述集成功率放大器U1的反相输入端口连接到电阻R3和电阻R4之间，从而形成电压负反馈电路；
当电源管理装置的输出因为不稳定因素变高；在输出电压有波动时，所述电压负反馈电路保证所述集成功率放大器U1的输入做出相应调整，以便输出稳定的电压。
一种具体的电压负反馈调整实例为：在所述电压负反馈电路供给所述集成功率放大器U1反相输入端口电压也会增加，于是所述集成功率放大器U1的输出电压便会随之下降，从而使得电源管理装置的输出电压下降。
结合本实施例，为了能够提高负载性能，，所述电源转换模块中还可设计增加复合电压跟随器，具体的：
由两个半导体三极管Q1和Q2组成复合电压跟随器，其中半导体三极管Q2的发射极连接半导体三极管Q1的基极，半导体三极管Q1的集电极和半导体三极管Q2的集电极相连并作为复合电压跟随器的集电极，半导体三极管Q2的基极则作为复合电压跟随器的基极，半导体三极管Q1的发射极作为复合电压跟随器的发射极；利用共基极的连接方式将所述复合电压跟随器连接到所述稳压模块的输出端口，半导体三极管Q1输出的电压即为所述电源管理装置的输出电压。
实施例3:
本实施例基于实施例1和/或实施例2中公开的电源管理装置基础上实现，通过具体的实例描述如何实现所述过流保护模块4。在本实施例中，如图3所示所述过流保护模块4中包括限流电路，所述限流电路的输出端口和所述稳压模块的输出端口相连，具体的：
所述限流电路由集成功率放大器U2构成，所述集成功率放大器U2的正向输入端口连接所述电源管理装置的输出端口；
所述集成功率放大器U2的反相输入端口通过电阻R5和电阻R6连接到所
述电源管理装置的输出端口；其中，电阻R6串联在所述电源管理装置的输出线路上，和所述电源管理装置的输出电流形成一个可变压降；其中，电阻R5由一电流源提供稳定电流，产生固定的压降；
当所述电源管理装置的输出电流形变大时，电阻R6产生的压降增大；由于所述稳压模块的存在，此时电源管理装置的输出电压不变，于是电阻R5连接电阻R6的接口电压便要增大；在所述电阻R5产生压降固定情况下，所述集成功率放大器U2的反相输入端口电压增加，于是所述集成功率放大器U2输出负电压；
当所述集成功率放大器U2产生的负电压和所述集成功率放大器U1产生的正电压相同时，所述电源管理装置的输出电压为零。
结合本实施例，为了能够在输出电流超标的情况下，操作人员能够警觉到该情况，本实施例在一种扩展方案中，包括所述集成功率放大器U1和集成功率放大器U2之间串联一发光二极管，所述发光二极管的正极接口和所述集成功率放大器U1的输出接口连接，具体的：
在所述集成功率放大器U2输出电压和所述集成功率放大器U1输出电压的压差超过所述发光二极管的工作电压时，所述发光二级管发光指示当前电源管理装置输出电流过大。
实施例4:
本实施例可以结合上述实施例1进行实现，也可以和所述实施例2和/或者实施3组合到一起实现。如图4所示，所述电压监测模块6具体包括：
由集成运算放大器U3构成的电压跟随器，将所述电源管理装置输出端口的电压，经过电阻R7和电阻R8分压后，作为所述电压跟随器的正向输入端口输入信号；
所述电压跟随器的输出电压传递给控制器1的模数转换接口，从而完成对所述电源转换模块的电压监测。
如图4所示，所述电流监测模块5具体包括：：
根据集成运算放大器U4构成的减法器，通过获取所述电源管理装置输出电
压上的采样电阻R6的压降来计算生成所要监测的电流。
实施例5:
如图5所示，为本发明实施例提供的一种改进的电源管理装的结构示意图，其包含了上述实施例2至实施例4的各种模块，揭示了其共同实现的方式。在本发明各实施例中，例如：
针对实施例2中的电源转换模块3的电压转换的控制，可以通过将电阻R1替换为由控制器I/O接口连接可控制电阻器件Rx来实现。而输出电压会随着Rx的增大而减小，随之减小而增大。
针对实施例3中的过流保护模块4的限流电路，可以通过将电阻R5替换为由控制器I/O接口连接可控制电阻器件Ry来实现。而允许输出电流会随着Ry的增大而减小，随之减小而增大。
具体实现在此不一一赘述。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，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 (10)
- 一种改进的电源管理装置，其特征在于，所述电源管理装置包括控制器、输出控制调节模块、电源转换模块和过流保护模块，具体的：所述控制器连接所述输出控制调节模块，所述控制器用于发送调节输出电压或者调节过流保护模块的限流阈值的信号给所述输出控制调节模块；所述输出控制调节模块连接所述电源转换模块，用于在接收到所述调节输出电压或者调节过流保护模块的限流阈值的信号后，完成所述输出电压或者限流阈值所对应的电路调整；所述电源转换模块基于供电电源，经过转换后输出一个稳定的电压；所述过流保护模块连接所述电源转换模块，用于在电源管理装置的输出电流超过预设值后，停止电源转换模块的电压输出。
- 如权利要求1所述的电源管理装置，其特征在于，还包括电压监测模块和电流监测模块，具体的：所述控制器还通过电压监测模块和电流监测模块连接所述电源转换模块，从而对所述电源转换模块的输出电压和输出电流进行监测。
- 如权利要求1或2所述的电源管理装置，所述电源转换模块中包括稳压模块，具体的：所述稳压模块由集成功率放大器U1构成，所述集成功率放大器U1的正向输入端口串联电阻R1和电阻R2后接地；在所述电阻R2两端并联一个稳压二极管，通过所述稳压二极管提供的参考电压VREF，生成所述集成功率放大器U1的正向电压；所述电源管理装置的输出端口串联电阻R3和电阻R4后接地，通过将所述集成功率放大器U1的反相输入端口连接到电阻R3和电阻R4之间，从而形成电压负反馈电路；在输出电压有波动时，所述电压负反馈电路保证所述集成功 率放大器U1的输入做出相应调整，以便输出稳定的电压。
- 根据权利要求3所述的电源管理装置，其特征在于，所述电源转换模块中包括复合电压跟随器，具体的：由两个半导体三极管Q1和Q2组成复合电压跟随器，其中半导体三极管Q2的发射极连接半导体三极管Q1的基极，半导体三极管Q1的集电极和半导体三极管Q2的集电极相连并作为复合电压跟随器的集电极，半导体三极管Q2的基极则作为复合电压跟随器的基极，半导体三极管Q1的发射极作为复合电压跟随器的发射极；利用共基极的连接方式将所述复合电压跟随器连接到所述稳压模块的输出端口，半导体三极管Q1输出的电压即为所述电源管理装置的输出电压。
- 根据权利要求1-4任一所述的电源管理装置，其特征在于，所述过流保护模块包括一个限流电路，所述限流电路的输出端口和所述稳压模块的输出端口相连，具体的：所述限流电路由集成功率放大器U2构成，所述集成功率放大器U2的正向输入端口连接所述电源管理装置的输出端口；所述集成功率放大器U2的反相输入端口通过电阻R5和电阻R6连接到所述电源管理装置的输出端口；其中，电阻R6串联在所述电源管理装置的输出线路上，和所述电源管理装置的输出电流形成一个可变压降；其中，电阻R5由一电流源提供稳定电流，产生固定的压降；当所述电源管理装置的输出电流形变大时，电阻R6产生的压降增大；由于所述稳压模块的存在，此时电源管理装置的输出电压不变，于是电阻R5连接电阻R6的接口电压便要增大；在所述电阻R5产生压降固定情况下，所述集成功率放大器U2的反相输入端口电压增加，于是所述集成功率放大器U2输出负电压；当所述集成功率放大器U2产生的负电压和所述集成功率放大器U1产生的 正电压相同时，所述电源管理装置的输出电压为零。
- 根据权利要求5所述的电源管理装置，其特征在于，所述集成功率放大器U1和集成功率放大器U2之间串联一发光二极管，所述发光二极管的正极接口和所述集成功率放大器U1的输出接口连接，具体的：在所述集成功率放大器U2输出电压和所述集成功率放大器U1输出电压的压差超过所述发光二极管的工作电压时，所述发光二级管发光表明当前电源管理装置输出电流过大。
- 如权利要求2-6所述的电源管理装置，其特征在于，所述电压监测模块具体包括：由集成运算放大器构成的电压跟随器，将所述电源管理装置输出端口的电压，经过电阻R7和电阻R8分压后，作为所述电压跟随器的正向输入端口输入信号；所述电压跟随器的输出电压传递给控制器的模数转换接口，从而完成对所述电源转换模块的电压监测。
- 如权利要求2-7所述的电源管理装置，其特征在于，所述电流监测模块具体包括：根据集成运算放大器构成的减法器，通过获取所述电源管理装置输出电压上的采样电阻R6的压降来计算生成所要监测的电流。
- 如权利要求8所述的电源管理装置，其特征在于，所述控制器在获取到所述电流监测模块返回的电流超出安全范围时，控制所述输出控制调节模块断开电源转换模块的电源供电。
- 如权利要求2-9任一所述的电源管理装置，其特征在于，还包括显示 模块，用于根据电压监测模块反馈的电压值和所述电流监测模块返回的电流值，计算当前的输出功率，并将所述电流值、电压值和输出功率显示在所述显示模块中。
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| CN1564104A (zh) * | 2004-03-31 | 2005-01-12 | 李明 | 一种基于软硬件协同管理的电源管理系统及管理方法 |
| WO2014021470A1 (en) * | 2012-07-31 | 2014-02-06 | Ricoh Company, Ltd. | Isolated switched-mode power supply apparatus and control method for the same |
| CN103019145A (zh) * | 2012-12-20 | 2013-04-03 | 四川九洲电器集团有限责任公司 | 能够实现电源监控及保护的系统 |
| CN103683931A (zh) * | 2013-12-27 | 2014-03-26 | 深圳市航嘉驰源电气股份有限公司 | 一种电源转换电路 |
| CN104682352A (zh) * | 2015-03-05 | 2015-06-03 | 深圳市九洲电器有限公司 | 一种改进的电源管理装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104682352B (zh) | 2017-06-16 |
| CN104682352A (zh) | 2015-06-03 |
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