WO2022057762A1 - 充电设备 - Google Patents

充电设备 Download PDF

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Publication number
WO2022057762A1
WO2022057762A1 PCT/CN2021/117976 CN2021117976W WO2022057762A1 WO 2022057762 A1 WO2022057762 A1 WO 2022057762A1 CN 2021117976 W CN2021117976 W CN 2021117976W WO 2022057762 A1 WO2022057762 A1 WO 2022057762A1
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Prior art keywords
electronic switch
capacitor
voltage
electrically connected
logic control
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PCT/CN2021/117976
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English (en)
French (fr)
Inventor
李达寰
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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Publication of WO2022057762A1 publication Critical patent/WO2022057762A1/zh
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H02J7/04—Regulation of charging current or voltage

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a charging device.
  • the output power of charging devices is also required to be larger and larger.
  • the capacity and volume of the filter electrolytic capacitors required by high-power power supplies are large, which makes the volume of the charger also larger.
  • the volume of the transformer is generally reduced by increasing the operating frequency of the power supply, and finally the volume of the charging device is reduced.
  • the increase of the operating frequency of the power supply will increase the switching loss of the switch, thereby reducing the overall efficiency of the charging device.
  • Embodiments of the present application provide a charging device to solve the problem of low overall efficiency of the existing portable charging device due to the increase in the operating frequency of its power supply.
  • an embodiment of the present application provides a charging device, including: a rectifier module, a first capacitor, a second capacitor, a first electronic switch, a second electronic switch, a third electronic switch, and a logic control module, wherein,
  • the first end of the first capacitor is electrically connected to the positive output end of the rectifier module, one end of the first electronic switch is electrically connected to the second end of the first capacitor, and the other end of the first electronic switch is electrically connected. one end is electrically connected to the negative output end of the rectifier module;
  • One end of the second electronic switch is electrically connected to the positive output end, the other end is electrically connected to the first end of the second capacitor, and the second end of the second capacitor is electrically connected to the negative output end;
  • One end of the third electronic switch is electrically connected to the second end of the first capacitor, and the other end is electrically connected to the first end of the second capacitor;
  • the logic control module is respectively electrically connected to the first electronic switch, the second electronic switch, the third electronic switch and the voltage input end of the charging device;
  • the logic control module controls the first electronic switch and the second electronic switch to be in an off state, and controls the third electronic switch to be in an on state , so that the first capacitor and the second capacitor are connected in series;
  • the logic control module controls the first electronic switch and the second electronic switch to be in an on state, and controls the third electronic switch to be in an off state , so that the first capacitor and the second capacitor are connected in parallel.
  • connection state of the first capacitor and the second capacitor is adjusted according to the input voltage of the charging device, and when the input voltage is the first voltage, that is, when the input voltage is relatively high, the logic control module passes The first electronic switch and the second electronic switch are controlled to be in an off state, and the third electronic switch is controlled to be in an on state, so that the first capacitor and the second capacitor are connected in series to improve the series connection of the first capacitor and the second capacitor.
  • the logic control module controls the first electronic switch and the second electronic switch to be in an on state, and controls the third electronic switch to be in an off state
  • the first capacitor and the second capacitor are connected in parallel, so as to improve the capacity of the first capacitor and the second capacitor connected in parallel, and achieve a small ripple voltage, which has the effect of stable operation.
  • the first capacitor and the second capacitor connected in series work with a high withstand voltage value, avoiding the use of high withstand voltage and large capacity.
  • the large volume of electrolytic capacitors so as to achieve the purpose of reducing the volume of charging equipment.
  • FIG. 1 is a structural diagram of a charging device provided by an embodiment of the present application.
  • FIG. 2 is a structural diagram of an electrolytic capacitor filter module provided by an embodiment of the present application.
  • FIG. 3 is a structural diagram of a logic control module provided by an embodiment of the present application.
  • an embodiment of the present application provides a charging device, including an external power supply 10, an electromagnetic interference filter module 20, a rectifier module 30, an electrolytic capacitor filter module 40, a power conversion module 50, an output rectifier filter module 60, and an output port 70; the input end of the electromagnetic interference filter module 20 is electrically connected to the external power supply 10, the output end of the electromagnetic interference filter module 20 is electrically connected to the input end of the rectifier module 30, and the input end of the rectifier module 30 is connected to the power conversion module through the electrolytic capacitor module 40
  • the input end of the power conversion module 50 is electrically connected to the input end of the output rectifying and filtering module 60 , and the output end of the output rectifying and filtering module 60 is electrically connected to the output port 70 .
  • the external power supply can be a power grid or other electric energy storage equipment
  • the electromagnetic interference filtering module 20 is used to filter the electromagnetic signal in the external power supply 10
  • the rectification module 30 is used to convert alternating current into direct current
  • the output port 70 can be used to connect with The device to be charged is connected to charge or supply power to the device to be charged.
  • An embodiment of the present application provides a charging device, including: a rectifier module, a first capacitor 41, a second capacitor 42, a first electronic switch 43, a second electronic switch 44, a third electronic switch 45, and a logic control module, wherein,
  • the first end of the first capacitor 41 is electrically connected to the positive output end of the rectifier module, one end of the first electronic switch 43 is electrically connected to the second end of the first capacitor 41, and the other end of the first electronic switch 43 is electrically connected to the negative end of the rectifier module.
  • the output terminal is electrically connected;
  • One end of the second electronic switch 44 is electrically connected to the positive output end, the other end is electrically connected to the first end of the second capacitor 42, and the second end of the second capacitor 42 is electrically connected to the negative output end;
  • One end of the third electronic switch 45 is electrically connected to the second end of the first capacitor 41, and the other end is electrically connected to the first end of the second capacitor 42;
  • the logic control module is respectively electrically connected to the first electronic switch 43, the second electronic switch 44, the third electronic switch 45 and the voltage input end of the charging device;
  • the logic control module controls the first electronic switch 43 and the second electronic switch 44 to be in an off state, and controls the third electronic switch 45 to be in an on state, so that the first capacitor and the second electronic switch 45 are in an on state.
  • the second capacitor is connected in series;
  • the logic control module controls the first electronic switch 43 and the second electronic switch 44 to be in an on state, and controls the third electronic switch 45 to be in an off state, so that the first capacitor and the second electronic switch 45 are in an off state.
  • the second capacitor is connected in parallel.
  • the first capacitor 41 , the second capacitor 42 , the first electronic switch 43 , the second electronic switch 44 , the third electronic switch 45 and the logic control module may constitute the above-mentioned electrolytic capacitor filtering module 40 .
  • connection state of the first capacitor 41 and the second capacitor 42 is adjusted according to the input voltage of the charging device, and when the input voltage is the first voltage, that is, when the input voltage is relatively high, the logic The control module controls the first electronic switch 43 and the second electronic switch 44 to be in an off state, and controls the third electronic switch 45 to be in an on state, so that the first capacitor 41 and the second capacitor 42 are connected in series to improve the series connection.
  • the connection state of the first capacitor 41 and the second capacitor 42, and when the input voltage is high the first capacitor 41 and the second capacitor 42 connected in series can work with a high withstand voltage value, avoiding the use of high voltage.
  • the first voltage is greater than the second voltage, and when the first capacitor 41 and the second capacitor 42 are connected in series, the voltage withstand capability of the electrolytic capacitor filter module 40 can be improved to prevent the electrolytic capacitor filter module 40 from being subjected to high input voltages
  • the capacity of the electrolytic capacitor filter module 40 can be increased, and a small ripple voltage can be achieved to achieve the effect of stable operation.
  • the logic control module 46 controls the first electronic switch 43 and the second electronic switch 44 to be in an off state, and controls the third electronic switch 45 to be in an on state, so as to
  • the first capacitor 41 and the second capacitor 42 are connected in series to improve the withstand voltage value of the electrolytic capacitor filter module 40 in a high voltage state, avoid damage to the electrolytic capacitor filter module 40 in a high input voltage state, and achieve high reliability Effect;
  • the logic control module 46 controls the first electronic switch 43 and the second electronic switch 44 to be in an on state, and controls the third electronic switch 45 to be in an off state, so as to
  • the first capacitor 41 and the second capacitor 42 are connected in parallel, so as to increase the capacity of the electrolytic capacitor filter module 40, achieve a small ripple voltage, and achieve the effect of stable operation.
  • the number of capacitors in the electrolytic capacitor filtering module 40 may be N; and when the charging device starts to work, the N capacitors in the electrolytic capacitor filtering module 40 may be connected in parallel by default. If the voltage is too high, in the process of voltage rising, N capacitors are controlled to be connected in series.
  • the input voltage can be detected by the logic control module 46; when the input voltage is low, the logic control module 46 controls the N capacitors to be connected in parallel, so that the capacity of the N capacitors increases to meet the requirements of the low voltage charging device.
  • the minimum operating voltage requirement of the voltage ripple when the input voltage is high, the logic control module 46 controls the N capacitors to be connected in series, so that the withstand voltage of the N capacitors increases. It should be noted that when the input voltage is high, the minimum voltage is greater than the minimum working voltage of the charging device.
  • the logic control module 46 includes a voltage detection unit 461, a comparator 462, a logic control unit 463 and a drive unit 464, and further includes a first resistor 465, a second resistor 466 and a power supply unit 467; wherein:
  • the voltage detection unit 461 is electrically connected to the input end of the comparator 462 for detecting the input voltage of the charging device;
  • One end of the logic control unit 463 is electrically connected to the output end of the comparator 462, the other end is electrically connected to the first end of the driving unit 464, and the second end of the driving voltage 464 is respectively connected to the first electronic switch 43, the second electronic switch 44 and the The third electronic switch 45 is electrically connected;
  • the logic control unit 463 is used to control the driving unit 464 to adjust the working states of the first electronic switch 43 , the second electronic switch 44 and the third electronic switch 45 according to the detected input voltage, so that the first capacitor 41 and the second capacitor 42 Switch between series connection and parallel connection.
  • the logic control unit 463 can control the driving unit 464 to output the corresponding driving signal according to the signal of the comparator 462, compare with the preset logic, for example, control the driving unit 464 to adjust the first electronic switch 43, the second electronic switch 44 and the third electronic switch 45. , so that the first capacitor 41 and the second capacitor 42 are switched between series connection and parallel connection.
  • One end of the first resistor 465 can be electrically connected to the positive output end of the rectifier module 30, the other end is electrically connected to the first end of the voltage detection unit 461, and the input end of the comparator 462 electrically connected to the voltage detection unit 461 is a comparator 462's first input;
  • the comparator 462 also includes a second input terminal that is electrically connected to the output terminal of the reference voltage module.
  • the output terminal of the comparator 462 is electrically connected to the first terminal of the logic control unit 463.
  • the comparator 462 is used to detect the voltage detected by the voltage detection unit 461. The voltage is compared with the voltage output by the reference voltage module, so that the logic control unit 463 outputs a control command to the driving unit 464 according to the comparison result, and then adjusts the first electronic switch 43 , the second electronic switch 44 and the third electronic switch 45 through the driving unit 464 working state, so that the first capacitor 41 and the second capacitor 42 are switched between series connection and parallel connection;
  • One end of the second resistor 466 can also be electrically connected to the positive output end of the rectifier module 30 , and the other end is electrically connected to the first end of the power supply unit 467 , and the second end of the power supply unit 467 is electrically connected to the first end of the logic control unit 463 .
  • the power supply unit 467 is used to supply power to the logic control module 46 .
  • the alternating current is input from the external power supply 10 through the magnetic interference filter module 20, and after passing through the rectifying module 30, the alternating current becomes direct current; the electric energy rectified by the rectifying module 30 first supplies power to the logic control module 46, and at this time the first The first capacitor 41 and the second capacitor 42 are both disconnected.
  • the logic control module 46 After the logic control module 46 is powered on, it controls the first electronic switch 43 and the second electronic switch 44 to be on, and the third electronic switch 45 is off, and simultaneously detects the input voltage of the charging device. At this time, the first capacitor 41 and the second capacitor 42 are connected in parallel, and the rectified electric energy charges the first capacitor 41 and the second capacitor 42 .
  • the logic control module 46 When the logic control module 46 detects that the input voltage is higher than the threshold V1, the value range of V1 can be 150 volts to 200 volts; the logic control module 46 controls the first electronic switch 43 and the second electronic switch 44 to be in an off state, the first The three-electronic switch 45 is in a conducting state, even though the first capacitor 41 and the second capacitor 42 are connected in series.
  • V2 When the logic control module 46 detects that the input voltage is lower than the threshold V2, V2 is 30 volts to 70 volts lower than V1; the logic control module 46 controls the first electronic switch 43 and the third electronic switch 45 to be in a conducting state, and the second electronic switch 44 is in an open state, even though the first capacitor 41 and the second capacitor 42 are connected in parallel.
  • the logic control module 46 may further include an isolation unit 468, one end of the isolation unit 468 is electrically connected to the driving unit 464, and the other end is electrically connected to the first electronic switch 43, which is used to solve the problem that the signals of the first electronic switch 43 do not share the same ground. question.
  • the logic control module 46 may further include a NOT gate unit 469, one end of the NOT gate unit 469 is electrically connected to the driving unit 464, and the other end is electrically connected to the third electronic switch 45; by setting the NOT gate unit 469, the delay time and dead time can be reduced. zone time. For example, when the logic control module 46 controls the first electronic switch 43 and the second electronic switch 44 to be in the off state, the third electronic switch 45 is turned on by the delay of the NOT gate unit 469, which can reduce the delay time; When the logic control module 46 controls the first electronic switch 43 and the second electronic switch 44 to be in an on state and the third electronic switch 45 is in an off state, the dead time can be reduced by the delay of the NOT gate unit 469 .
  • the charging device may further include a first diode and a second diode, the anode of the first diode is electrically connected to the positive input terminal of the rectifier module 30 , and the anode of the second diode is electrically connected to the negative terminal of the rectifier module 30 .
  • the input terminals are electrically connected, and both the cathode of the first diode and the cathode of the second diode are electrically connected to the voltage detection unit 461 .
  • the voltage detection unit may also be electrically connected to the positive output terminal of the rectifier module 30 to detect the input voltage.
  • the first electronic switch 43 , the second electronic switch 44 and the third electronic switch 45 may be MOS transistor switches, and may also be relay switches or the like.
  • the electrolytic capacitor filter module 40 when the input voltage is low, the electrolytic capacitor filter module 40 has a larger capacitance capacity, and the output ripple of the charging device is better; The device can withstand higher input voltages to ensure the reliability of the charging device.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本申请提供一种充电设备，包括：整流模块、第一电容、第二电容、第一电子开关、第二电子开关、第三电子开关和逻辑控制模块，第一电容和第二电容通过第一电子开关、第二电子开关、第三电子开关与整流模块的正输出端和负输出端电连接；当电压输入端的输入电压为第一电压时，逻辑控制模块控制第一电子开关和第二电子开关处于断开状态，以及控制第三电子开关处于导通状态，以使第一电容和第二电容串联连接；当电压输入端的输入电压为第二电压时，逻辑控制模块控制第一电子开关和第二电子开关处于导通状态，以及控制第三电子开关处于断开状态，以使第一电容和第二电容并联连接。

Description

充电设备
相关申请的交叉引用
本申请主张在2020年9月15日在中国提交的中国专利申请号No.202010967249.5的优先权，其全部内容通过引用包含于此。
技术领域
本申请涉及通信技术领域，尤其涉及一种充电设备。
背景技术
随着手机等电子设备的快充技术的发展，充电设备的输出功率也被要求越来越大。而大功率的电源需要的滤波电解电容器的容量和体积都很大，使得充电器的体积也变大。为提高充电设备的携带的便利性，一般是通过提高电源的工作频率来减小变压器的体积，最终减小充电设备的体积。然而，电源的工作频率的提高，会增加开光管的开关损耗，进而降低充电设备的整机效率。
发明内容
本申请实施例提供一种充电设备，以解决现有的便携式充电设备由于其电源的工作频率的提高，导致的整机效率低的问题。
为解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种充电设备，包括：整流模块、第一电容、第二电容、第一电子开关、第二电子开关、第三电子开关和逻辑控制模块，其中，
所述第一电容的第一端与所述整流模块的正输出端电连接，所述第一电子开关的一端与所述第一电容的第二端电连接，所述第一电子开关的另一端与所述整流模块的负输出端电连接；
所述第二电子开关的一端与所述正输出端电连接，另一端与所述第二电容的第一端电连接，所述第二电容的第二端与所述负输出端电连接；
所述第三电子开关的一端与所述第一电容的第二端电连接，另一端与所述第二电容的第一端电连接；
所述逻辑控制模块分别电连接所述第一电子开关、所述第二电子开关、所述第三电子开关及所述充电设备的电压输入端；
当所述电压输入端的输入电压为第一电压时，所述逻辑控制模块控制所述第一电子开关和所述第二电子开关处于断开状态，以及控制所述第三电子开关处于导通状态，以使所述第一电容和所述第二电容串联连接；
当所述电压输入端的输入电压为第二电压时，所述逻辑控制模块控制所述第一电子开关和所述第二电子开关处于导通状态，以及控制所述第三电子开关处于断开状态，以使所述第一电容和所述第二电容并联连接。
在本申请实施例中，通过根据充电设备的输入电压的大小，来调整第一电容和第二电容的连接状态，并在输入电压为第一电压，即输入电压较高时，逻辑控制模块通过控制第一电子开关和第二电子开关处于断开状态，以及控制第三电子开关处于导通状态，以使第一电容和第二电容串联连接，以提高串联连接的第一电容和第二电容的耐压值；在输入电容为第二电压，即输入电压较低时，逻辑控制模块通过控制第一电子开关和第二电子开关处于导通状态，以及控制第三电子开关处于断开状态，以使第一电容和第二电容并联连接，以提高并联连接的第一电容和第二电容的容量，并达到小纹波电压，起到工作稳定的效果。这样通过调整第一电容和第二电容的连接状态，并在输入电压较高时，使串联连接的第一电容和第二电容工作具有较高的耐压值，避免了使用高耐压大容量的大体积的电解电容器，从而达到减小充电设备的体积的目的。
附图说明
图1是本申请实施例提供的充电设备的结构图；
图2是本申请实施例提供的电解电容滤波模块的结构图；
图3是本申请实施例提供的逻辑控制模块的结构图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，说明书以及权利要求中“和/或”表示所连接对象的至少其中之一，字符“/”，一般表示前后关联对象是一种“或”的关系。
如图1所示，本申请实施例提供一种充电设备，包括外部电源10、电磁干扰滤波模块20、整流模块30、电解电容滤波模块40、功率变换模块50、输出整流滤波模块60和输出端口70；电磁干扰滤波模块20的输入端与外部电源10电连接，电磁干扰滤波模块20的输出端与整流模块30的输入端电连接，整流模块30的输入端通过电解电容模块40与功率变换模块50的输入端电连接，功率变换模块50的输出端与输出整流滤波模块60的输入端连接，输出整流滤波模块60的输出端与输出端口70电连接。
其中，外部电源可以是电网或者其他电能储蓄设备，电磁干扰滤波模块20用于对外部电源10的中的电磁信号进行过滤；整流模块30用于将交流电转换成直流电；输出端口70可以用于与待充设备连接，用于对待充设备进行充电或者供电。
本申请实施例提供一种充电设备，包括：整流模块、第一电容41、第二电容42、第一电子开关43、第二电子开关44、第三电子开关45和逻辑控制模块，其中，
第一电容41的第一端与整流模块的正输出端电连接，第一电子开关43的一端与第一电容41的第二端电连接，第一电子开关43的另一端与整流模块的负输出端电连接；
第二电子开关44的一端与正输出端电连接，另一端与第二电容42的第一端电连接，第二电容42的第二端与负输出端电连接；
第三电子开关45的一端与第一电容41的第二端电连接，另一端与第二 电容42的第一端电连接；
逻辑控制模块分别电连接第一电子开关43、第二电子开关44、第三电子开关45及充电设备的电压输入端；
当电压输入端的输入电压为第一电压时，逻辑控制模块控制第一电子开关43和第二电子开关44处于断开状态，以及控制第三电子开关45处于导通状态，以使第一电容和第二电容串联连接；
当电压输入端的输入电压为第二电压时，逻辑控制模块控制第一电子开关43和第二电子开关44处于导通状态，以及控制第三电子开关45处于断开状态，以使第一电容和第二电容并联连接。
其中，第一电容41、第二电容42、第一电子开关43、第二电子开关44、第三电子开关45和逻辑控制模块可以组成上述的电解电容滤波模块40。
而且，在本实施方式中，通过根据充电设备的输入电压的大小，来调整第一电容41和第二电容42的连接状态，并在输入电压为第一电压，即输入电压较高时，逻辑控制模块通过控制第一电子开关43和第二电子开关44处于断开状态，以及控制第三电子开关45处于导通状态，以使第一电容41和第二电容42串联连接，以提高串联连接的第一电容41和第二电容42的耐压值；在输入电容为第二电压，即输入电压较低时，逻辑控制模块通过控制第一电子开关43和第二电子开关44处于导通状态，以及控制第三电子开关45处于断开状态，以使第一电容41和第二电容42并联连接，以提高并联连接的第一电容41和第二电容42的容量，并达到小纹波电压，起到工作稳定的效果。这样通过调整第一电容41和第二电容42的连接状态，并在输入电压较高时，使串联连接的第一电容41和第二电容42工作具有较高的耐压值，避免了使用高耐压大容量的大体积的电解电容器，从而达到减小充电设备的体积的目的。
其中，第一电压大于第二电压，且当第一电容41和第二电容42串联连接的时候，可以提高电解电容滤波模块40的耐压能力，以避免电解电容滤波模块40不被高输入电压损坏，达到高可靠性的效果；而当第一电容41和第二电容42并联连接的时候，可以提高电解电容滤波模块40的容量，并达到小纹波电压，起到工作稳定的效果。
具体的，当输入电压为第一电压，即高电压时，逻辑控制模块46控制第一电子开关43和第二电子开关44处于断开状态，以及控制第三电子开关45处于导通状态，以使第一电容41和第二电容42串联连接，以提高电解电容滤波模块40在高电压状态下的耐压值，避免电解电容滤波模块40在高输入电压的状态下损坏，并达到高可靠性的效果；
相应的，在输入电压为第二电压，即低电压时，逻辑控制模块46控制第一电子开关43和第二电子开关44处于导通状态，以及控制第三电子开关45处于断开状态，以使第一电容41和第二电容42并联连接，以提高电解电容滤波模块40的容量，达到小纹波电压，起到工作稳定的效果。
可选的，电解电容滤波模块40中的电容的数量可以是N个；且在充电设备开始工作时，可以将电解电容滤波模块40中的N个电容默认为并联连接。如果电压过高，则在电压上升的过程中，控制N个电容串联连接。
比如，充电设备开始工作时，可以通过逻辑控制模块46检测输入电压；当输入电压较低时，逻辑控制模块46控制N个电容并联连接，使得N个电容的容量增加，满足低压时充电设备的电压纹波的最小工作电压要求；当输入电压较高时，逻辑控制模块46控制N个电容串联连接，使得N个电容的耐压增加。需要说明的是，输入电压较高时，最小电压大于充电设备工作的最小工作电压。
如图3所示，逻辑控制模块46包括电压检测单元461、比较器462、逻辑控制单元463和驱动单元464，此外，还包括第一电阻465、第二电阻466和供电单元467；其中：
电压检测单元461和比较器462的输入端电连接，用于检测充电设备的输入电压；
逻辑控制单元463的一端与比较器462的输出端电连接，另一端与驱动单元464的第一端电连接，驱动电压464的第二端分别与第一电子开关43、第二电子开关44和第三电子开关45电连接；
逻辑控制单元463用于根据检测到的输入电压，控制驱动单元464调整第一电子开关43、第二电子开关44和第三电子开关45的工作状态，以使第一电容41和第二电容42在串联连接和并联连接之间切换。
逻辑控制单元463可以根据比较器462的信号，对比预设逻辑，控制驱动单元464输出对应的驱动信号，比如控制驱动单元464调整第一电子开关43、第二电子开关44和第三电子开关45的工作状态，以使第一电容41和第二电容42在串联连接和并联连接之间切换。
其中，第一电阻465的一端可以与整流模块30的正输出端电连接，另一端与电压检测单元461的第一端电连接，比较器462与电压检测单元461电连接的输入端为比较器462的第一输入端；
比较器462还包括与基准电压模块的输出端电连接的第二输入端，比较器462的输出端与逻辑控制单元463的第一端电连接，比较器462用于将电压检测单元461检测的电压与基准电压模块输出的电压进行比较，以便逻辑控制单元463根据比较结果向驱动单元464输出控制指令，进而通过驱动单元464调整第一电子开关43、第二电子开关44和第三电子开关45的工作状态，以使第一电容41和第二电容42在串联连接和并联连接之间切换；
第二电阻466的一端也可以与整流模块30的正输出端电连接，另一端与供电单元467的第一端电连接，供电单元467的第二端与逻辑控制单元463的第一端电连接，供电单元467用于对逻辑控制模块46进行供电。
在充电设备的过程中，交流电经磁干扰滤波模块20从外部电源10输入，经过整流模块30后，交流电变成直流电；经整流模块30整流后的电能首先给逻辑控制模块46供电，此时第一电容41和第二电容42均处于断开状态。
逻辑控制模块46上电起机后，控制第一电子开关43和第二电子开关44处于导通状态，第三电子开关45处于断开状态，同时检测充电设备的输入电压。此时，第一电容41和第二电容42并联，整流后的电能给第一电容41和第二电容42充电。
当逻辑控制模块46检测到输入电压高于阈值V1时，V1的取值范围可以是150伏特～200伏特；逻辑控制模块46控制第一电子开关43和第二电子开关44处于断开状态，第三电子开关45处于导通状态，即使第一电容41和第二电容42串联连接。
当逻辑控制模块46检测到输入电压低于阈值V2时，V2比V1小30伏特～70伏特；逻辑控制模块46控制第一电子开关43和第三电子开关45处于 导通状态，第二电子开关44处于断开状态，即使第一电容41和第二电容42并联连接。
其中，逻辑控制模块46还可以包括隔离单元468，隔离单元468的一端与驱动单元464电连接，另一端与第一电子开关43电连接，用于解决第一电子开关43的信号不共地的问题。
其中，逻辑控制模块46还可以包括非门单元469，非门单元469的一端与驱动单元464电连接，另一端与第三电子开关45电连接；通过设置非门单元469可以减少延迟时间和死区时间。比如，逻辑控制模块46控制第一电子开关43和第二电子开关44处于断开状态时，通过非门单元469的延时使得第三电子开关45处于导通状态，可以减少延迟时间；而当逻辑控制模块46控制第一电子开关43和第二电子开关44处于导通状态时，第三电子开关45处于断开状态时，通过非门单元469的延时可以减少死区时间。
其中，充电设备还可以包括第一二极管和第二二极管，第一二极管的阳极与整流模块30的正输入端电连接，第二二极管的阳极与整流模块30的负输入端电连接，且第一二极管的阴极和第二二极管的阴极均与电压检测单元461电连接。
其中，电压检测单元还可以与整流模块30的正输出端电连接，以检测输入电压。
其中，第一电子开关43、第二电子开关44和第三电子开关45可以MOS管开关，还可以是继电器开关等。
需要说明的是，当N个电容包括三个电容的时候，可以使得当输入电压较低时，使得电解电容滤波模块40有更大的电容容量，充电设备的输出纹波更好；同时，充电设备可以承受更高的输入电压，保证充电设备的可靠性。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本申请的保护之内。

Claims (10)

  1. 一种充电设备，包括：整流模块、第一电容、第二电容、第一电子开关、第二电子开关、第三电子开关和逻辑控制模块，其中，
    所述第一电容的第一端与所述整流模块的正输出端电连接，所述第一电子开关的一端与所述第一电容的第二端电连接，所述第一电子开关的另一端与所述整流模块的负输出端电连接；
    所述第二电子开关的一端与所述正输出端电连接，另一端与所述第二电容的第一端电连接，所述第二电容的第二端与所述负输出端电连接；
    所述第三电子开关的一端与所述第一电容的第二端电连接，另一端与所述第二电容的第一端电连接；
    所述逻辑控制模块分别电连接所述第一电子开关、所述第二电子开关、所述第三电子开关及所述充电设备的电压输入端；
    当所述电压输入端的输入电压为第一电压时，所述逻辑控制模块控制所述第一电子开关和所述第二电子开关处于断开状态，以及控制所述第三电子开关处于导通状态，以使所述第一电容和所述第二电容串联连接；
    当所述电压输入端的输入电压为第二电压时，所述逻辑控制模块控制所述第一电子开关和所述第二电子开关处于导通状态，以及控制所述第三电子开关处于断开状态，以使所述第一电容和所述第二电容并联连接。
  2. 根据权利要求1所述的充电设备，其中，所述逻辑控制模块包括电压检测单元、比较器、逻辑控制单元和驱动单元，其中，
    所述电压检测单元与所述比较器的输入端电连接，用于检测所述电压输入端的输入电压；
    所述逻辑控制单元的一端与所述比较器的输出端电连接，另一端与所述驱动单元的第一端电连接，所述驱动单元的第二端分别与所述第一电子开关、所述第二电子开关和所述第三电子开关电连接；
    所述逻辑控制单元用于根据所述输入电压，控制所述驱动单元调整所述第一电子开关、所述第二电子开关和所述第三电子开关的工作状态。
  3. 根据权利要求2所述的充电设备，还包括第一二极管和第二二极管；
    所述第一二极管的阳极与所述整流模块的正输入端电连接，所述第二二极管的阳极与所述整流模块的负输入端电连接，且所述第一二极管的阴极和所述第二二极管的阴极均与所述电压检测单元电连接。
  4. 根据权利要求2所述的充电设备，其中，所述电压检测单元与所述正输出端电连接，以检测所述输入电压。
  5. 根据权利要求2所述的充电设备，其中，所述逻辑控制模块还包括隔离单元，所述隔离单元的一端与所述驱动单元的第二端电连接，另一端与所述第一电子开关电连接。
  6. 根据权利要求2所述的充电设备，其中，所述逻辑控制模块还包括非门单元，所述非门单元的一端与所述驱动单元的第二端电连接，另一端与所述第二电子开关电连接。
  7. 根据权利要求1至6中任一项所述的充电设备，其中，所述第一电压大于所述第二电压。
  8. 根据权利要求7所述的充电设备，其中，所述第一电压的电压值的取值范围为150伏特～200伏特。
  9. 根据权利要求8所述的充电设备，其中，所述第二电压的电压值比所述第一电压的电压值小30伏特～70伏特。
  10. 根据权利要求1至6中任一项所述的充电设备，其中，所述第一电子开关、所述第二电子开关和所述第三电子开关均为MOS管。
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