WO2016026285A1 - Uninterruptible power supply - Google Patents

Uninterruptible power supply Download PDF

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Publication number
WO2016026285A1
WO2016026285A1 PCT/CN2015/073887 CN2015073887W WO2016026285A1 WO 2016026285 A1 WO2016026285 A1 WO 2016026285A1 CN 2015073887 W CN2015073887 W CN 2015073887W WO 2016026285 A1 WO2016026285 A1 WO 2016026285A1
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Prior art keywords
battery
power supply
inverter
circuit
controller
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PCT/CN2015/073887
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French (fr)
Chinese (zh)
Inventor
吕安平
杨戈戈
陈佳
邓超
邱熙
杜超
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深圳科士达科技股份有限公司
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Publication of WO2016026285A1 publication Critical patent/WO2016026285A1/en

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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
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the utility model relates to a power source, in particular to an uninterruptible power supply.
  • UPS Uninterruptible Power System/Uninterruptible Power Supply
  • UPS Uninterruptible Power System/Uninterruptible Power Supply
  • a battery mostly a lead-acid maintenance-free battery
  • a module circuit such as a host inverter.
  • It is mainly used to provide stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters, etc.
  • the UPS supplies the mains voltage to the load for use.
  • the UPS is an AC mains voltage regulator, and it also charges the internal battery; when the mains is interrupted (accident blackout) At the same time, the UPS immediately supplies the 220V AC power to the load through the inverter zero-switching conversion method, so that the load maintains normal operation and protects the load soft and hardware from damage.
  • UPS equipment typically provides protection against excessive voltage or low voltage.
  • the existing 1-3K online UPS battery boost circuit and battery charging circuit are independent of each other, and the two cannot work at the same time, resulting in waste of equipment and high machine cost.
  • the battery boost push-pull circuit does not work; when the UPS is in battery mode, the charging circuit does not work.
  • the existing battery boosting circuit adopts a push-pull circuit, and the battery discharge current ripple is large, which affects the battery life.
  • the present invention provides an uninterruptible power supply in which the battery boosting circuit and the battery charging circuit can work simultaneously and the battery discharge current ripple is small.
  • the utility model provides an uninterruptible power supply, comprising a battery, a bidirectional converter, a controller, a power factor corrector, a bus capacitor and an inverter, wherein the power factor corrector, the bus capacitor and the inverter are connected in series.
  • the bus capacitor is connected to the battery through the bidirectional converter, and the bidirectional converter, the inverter, and the power factor corrector are respectively connected to the controller.
  • the power factor corrector is connected to the mains.
  • the inverter is connected to a load.
  • the inverter is connected to the load through the first switch, and the first switch is connected to the controller.
  • the controller is connected to a load.
  • the controller is connected with a display and a button.
  • the controller is connected to an auxiliary power source.
  • the bidirectional converter is a bidirectional DC-DC converter.
  • the utility model has the beneficial effects that: when the bidirectional converter is boosted, the battery current is continuous, and there is no large ripple current of the conventional circuit, thereby avoiding damage to the battery and effectively prolonging the battery life; and the bidirectional converter can Working in two-way transformation, avoiding the charging circuit and the discharging circuit in the traditional circuit are independent of each other, effectively utilizing components and reducing circuit cost.
  • FIG. 1 is a structural diagram of an uninterruptible power supply of the present invention
  • FIG. 2 is a circuit diagram of a bidirectional converter of an uninterruptible power supply according to the present invention
  • FIG. 3 is a timing diagram of a battery soft start of an uninterruptible power supply of the present invention.
  • FIG. 4 is a schematic diagram of a boost-push pull operation mode of an uninterruptible power supply according to the present invention.
  • uninterruptible power supply 1 battery 100; bidirectional converter 200; controller 300; power factor corrector 400; bus capacitor 500; inverter 600; auxiliary power supply 700; Button 800; mains 2; load 3.
  • an uninterruptible power supply 1 includes a battery 100, a bidirectional converter 200, a controller 300, a power factor modifier 400, a bus capacitor 500, and an inverter 600, wherein the power factor corrector 400
  • the bus capacitor 500 and the inverter 600 are connected in series, and the bus capacitor 500 is connected to the battery 100 through the bidirectional converter 200.
  • the bidirectional converter 200, the inverter 600, and the power factor corrector 400 respectively The controller 00 is connected.
  • one end of the power factor corrector 400 is connected to the mains 2, and the other end is connected to the bus capacitor 500.
  • the power factor corrector 400 is abbreviated as PFC, and the English name of PFC is called "Power Factor”. Correction” means “power factor correction”.
  • the power factor refers to the relationship between the effective power and the total power consumption (apparent power), that is, the ratio of the effective power divided by the total power consumption (apparent power). Basically, the power factor can measure the extent to which power is effectively utilized. When the power factor value is larger, it represents the higher power utilization rate.
  • the computer switching power supply is a capacitive input type circuit, and the phase difference between current and voltage will be This causes a loss of switching power. At this time, the PFC circuit is required to increase the power factor.
  • PFCs There are two types of PFCs, one is passive PFC (also called passive PFC) and the active PFC (also called active PFC).
  • one end of the inverter 500 is connected to the load 3 and the other end is connected to the bus capacitor 500 .
  • the inverter 500 is connected to the load 3 through a first switch, and the first switch is connected to the controller 300.
  • the controller 300 is connected to a display and a button 800.
  • the controller 300 is connected to an auxiliary power source 700.
  • the bidirectional converter 200 is a bidirectional DC-DC converter.
  • Q1 and Q2 are battery boost switches
  • Q3 and Q4 are battery buck switches
  • L1 is boost inductor
  • L1 secondary winding is battery soft start circuit. The working process is described as follows.
  • Battery soft start refers to the process in which the UPS is powered on from the battery and charges the bus capacitor 500 (also known as BUS capacitor) from 0V to the rated value (such as 350V) through the soft start circuit.
  • the phase of the battery boost switch Q1 and Q2 PWM is 180°
  • the duty ratio of the battery boost switch Q1 and Q2 is less than 40%, and gradually increases from 0, and the battery boost switch Q1 and Q2 There are times when it is closed at the same time.
  • the battery boost switch Q1 when t0, the battery boost switch Q1 is turned on, the battery boost switch Q2 is turned off, the battery current flows through the boost inductor L1, and the boost inductor L1 is stored at this time; at time t1, the battery boost switch Q1 is turned off, boost Inductor L1 releases energy through diodes D3 and D4 to charge the BUS capacitor.
  • the battery boost switch Q2 is turned on, repeating the process of turning on the battery boost switch Q1, boost inductor L1 stores energy; at time t3, the battery boost switch Q2 is turned off, boost inductor L1 releases energy to BUS capacitor; t4 moment The next switching cycle begins.
  • B BOOST-PUSH PULL working mode: The Q1/Q2 duty ratio is greater than 50%.
  • the battery boost switch Q1 is turned on, and the battery boost switch Q2 is still turned on.
  • the transformer Short circuit, boost inductor L1 energy storage; t1 time battery boost switch Q2 is closed, at this time boost inductor L1 begins to release energy, boost inductor L1 forms a forward voltage, the transformer pushes the boost through the battery boost switch Q1; t2
  • the battery boost switch Q2 is turned on, the boost inductor L1 stores energy; at time t3, the battery boost switch Q1 is turned off, the boost inductor L1 forms a forward voltage, and the transformer is boosted and boosted by the battery boost switch Q2;
  • the boost switch Q1 is turned on to start the next cycle.
  • C Positive step-down charging operation mode: In this working mode, the battery step-down switching tubes Q3 and Q4 are simultaneously turned on, and the battery step-up switching tubes Q1 and Q2 are turned off.
  • the battery buck switch tube Q3, Q4 duty cycle is less than 50%, when the battery step-down switch tube Q3, Q4 is turned on, the voltage on the BUS capacitor is generated by the transformer at the right end of the boost inductor L1, and then filtered by the boost inductor L1. The battery is charged; when the battery step-down switch Q3, Q4 is turned off, the transformer is demagnetized by diodes D1, D2.
  • the utility model provides an uninterruptible power supply 1, which replaces the traditional push-pull boost and flyback buck two-part circuit through the bidirectional converter 200.
  • the bidirectional converter 200 When the bidirectional converter 200 is boosted, the battery current is continuous, and there is no conventional circuit. The large ripple current avoids damage to the battery 100 and effectively extends the battery life.
  • the bidirectional converter 200 can operate in a bidirectional conversion to avoid the charging circuit and the discharging circuit being independent of each other in the conventional circuit, effectively utilizing components, and reducing circuit cost. .

Abstract

An uninterruptible power supply (1) comprises a battery (100), a bidirectional transducer (200), a controller (300), a power factor corrector (400), a bus capacitor (500), and an inverter (600). The power factor corrector (400), the bus capacitor (500), and the inverter (600) are connected in series. The bus capacitor (500) is connected to the battery (100) through the bidirectional transducer (200). The bidirectional transducer (200), the inverter (600), and the power factor corrector (400) are connected to the controller (300). When the bidirectional transducer (200) operates in a boosting mode, the current of the battery is continuous without large ripple current of a conventional circuit, thereby preventing damages to the battery and effectively prolonging the service life of the battery. In addition, the bidirectional transducer (200) can operate to achieve a bidirectional conversion effect, so that the independence of a charging circuit and a discharging circuit in a conventional circuit is avoided, the components are effectively used and the circuit cost is reduced.

Description

一种不间断电源An uninterruptible power supply 技术领域Technical field
本实用新型涉及电源，尤其涉及一种不间断电源。The utility model relates to a power source, in particular to an uninterruptible power supply.
背景技术Background technique
UPS(Uninterruptible Power System/Uninterruptible Power Supply)，即不间断电源，是将蓄电池(多为铅酸免维护蓄电池)与主机相连接，通过主机逆变器等模块电路将直流电转换成市电的系统设备。主要用于给单台计算机、计算机网络系统或其它电力电子设备如电磁阀、压力变送器等提供稳定、不间断的电力供应。当市电输入正常时，UPS将市电稳压后供应给负载使用，此时的UPS就是一台交流市电稳压器，同时它还向机内电池充电；当市电中断(事故停电)时，UPS立即将电池的直流电能，通过逆变零切换转换的方法向负载继续供应220V交流电，使负载维持正常工作并保护负载软、硬件不受损坏。UPS设备通常对电压过高或电压过低都能提供保护。UPS (Uninterruptible Power System/Uninterruptible Power Supply) is an uninterruptible power supply. It is a system device that connects a battery (mostly a lead-acid maintenance-free battery) to a host computer and converts DC power into a commercial power through a module circuit such as a host inverter. . It is mainly used to provide stable and uninterrupted power supply to a single computer, computer network system or other power electronic equipment such as solenoid valves, pressure transmitters, etc. When the mains input is normal, the UPS supplies the mains voltage to the load for use. At this time, the UPS is an AC mains voltage regulator, and it also charges the internal battery; when the mains is interrupted (accident blackout) At the same time, the UPS immediately supplies the 220V AC power to the load through the inverter zero-switching conversion method, so that the load maintains normal operation and protects the load soft and hardware from damage. UPS equipment typically provides protection against excessive voltage or low voltage.
现有的1-3K在线式UPS电池升压电路和电池充电电路相互独立，两者不能同时工作，造成器件浪费，机器成本高。UPS处于市电模式时候，电池升压推挽电路不工作；UPS处于电池模式的时候，充电电路不工作。且现有的电池升压电路采用推挽电路，电池放电电流纹波很大，影响电池寿命。The existing 1-3K online UPS battery boost circuit and battery charging circuit are independent of each other, and the two cannot work at the same time, resulting in waste of equipment and high machine cost. When the UPS is in the mains mode, the battery boost push-pull circuit does not work; when the UPS is in battery mode, the charging circuit does not work. Moreover, the existing battery boosting circuit adopts a push-pull circuit, and the battery discharge current ripple is large, which affects the battery life.
发明内容Summary of the invention
为了解决现有技术中的问题，本实用新型提供了一种电池升压电路和电池充电电路可同时工作并且电池放电电流纹波较小的不间断电源。In order to solve the problems in the prior art, the present invention provides an uninterruptible power supply in which the battery boosting circuit and the battery charging circuit can work simultaneously and the battery discharge current ripple is small.
本实用新型提供了一种不间断电源，包括电池、双向变换器、控制器、功率因数修正器、母线电容和逆变器，其中，所述功率因数修正器、母线电容、逆变器串联，所述母线电容通过所述双向变换器与所述电池连接，所述双向变换器、逆变器、功率因数修正器分别与所述控制器连接。The utility model provides an uninterruptible power supply, comprising a battery, a bidirectional converter, a controller, a power factor corrector, a bus capacitor and an inverter, wherein the power factor corrector, the bus capacitor and the inverter are connected in series. The bus capacitor is connected to the battery through the bidirectional converter, and the bidirectional converter, the inverter, and the power factor corrector are respectively connected to the controller.
作为本实用新型的进一步改进，所述功率因数修正器接市电。As a further improvement of the present invention, the power factor corrector is connected to the mains.
作为本实用新型的进一步改进，所述逆变器接负载。 As a further improvement of the present invention, the inverter is connected to a load.
作为本实用新型的进一步改进，所述逆变器通过第一开关接负载，所述第一开关与所述控制器连接。As a further improvement of the present invention, the inverter is connected to the load through the first switch, and the first switch is connected to the controller.
作为本实用新型的进一步改进，所述控制器接负载。As a further improvement of the present invention, the controller is connected to a load.
作为本实用新型的进一步改进，所述控制器连接有显示器及按键。As a further improvement of the present invention, the controller is connected with a display and a button.
作为本实用新型的进一步改进，所述控制器连接有辅助电源。As a further improvement of the present invention, the controller is connected to an auxiliary power source.
作为本实用新型的进一步改进，所述双向变换器为双向DC-DC变换器。As a further improvement of the present invention, the bidirectional converter is a bidirectional DC-DC converter.
本实用新型的有益效果是：通过上述方案，双向变换器升压工作的时候，电池电流连续，没有传统电路大纹波电流，避免对电池的伤害，有效延长电池寿命；另外该双向变换器可以工作于双向变换，避免传统电路中充电电路和放电电路相互独立，有效利用了元器件，降低电路成本。The utility model has the beneficial effects that: when the bidirectional converter is boosted, the battery current is continuous, and there is no large ripple current of the conventional circuit, thereby avoiding damage to the battery and effectively prolonging the battery life; and the bidirectional converter can Working in two-way transformation, avoiding the charging circuit and the discharging circuit in the traditional circuit are independent of each other, effectively utilizing components and reducing circuit cost.
附图说明DRAWINGS
图1是本实用新型一种不间断电源的架构图；1 is a structural diagram of an uninterruptible power supply of the present invention;
图2是本实用新型一种不间断电源的双向变换器的电路图；2 is a circuit diagram of a bidirectional converter of an uninterruptible power supply according to the present invention;
图3是本实用新型一种不间断电源的电池软启动时序图；3 is a timing diagram of a battery soft start of an uninterruptible power supply of the present invention;
图4是本实用新型一种不间断电源的boost-push pull工作方式示意图。4 is a schematic diagram of a boost-push pull operation mode of an uninterruptible power supply according to the present invention.
具体实施方式detailed description
下面结合附图说明及具体实施方式对本实用新型进一步说明。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
图1至图4中的附图标号为：不间断电源1；电池100；双向变换器200；控制器300；功率因数修正器400；母线电容500；逆变器600；辅助电源700；显示器及按键800；市电2；负载3。1 to 4 are: uninterruptible power supply 1; battery 100; bidirectional converter 200; controller 300; power factor corrector 400; bus capacitor 500; inverter 600; auxiliary power supply 700; Button 800; mains 2; load 3.
如图1所示，一种不间断电源1，包括电池100、双向变换器200、控制器300、功率因数修正器400、母线电容500和逆变器600，其中，所述功率因数修正器400、母线电容500、逆变器600串联，所述母线电容500通过所述双向变换器200与所述电池100连接，所述双向变换器200、逆变器600、、功率因数修正器400分别与所述控制器00连接。As shown in FIG. 1, an uninterruptible power supply 1 includes a battery 100, a bidirectional converter 200, a controller 300, a power factor modifier 400, a bus capacitor 500, and an inverter 600, wherein the power factor corrector 400 The bus capacitor 500 and the inverter 600 are connected in series, and the bus capacitor 500 is connected to the battery 100 through the bidirectional converter 200. The bidirectional converter 200, the inverter 600, and the power factor corrector 400 respectively The controller 00 is connected.
如图1所示，所述功率因数修正器400的一端接市电2，另一端接母线电容500。As shown in FIG. 1, one end of the power factor corrector 400 is connected to the mains 2, and the other end is connected to the bus capacitor 500.
功率因数修正器400简称PFC，PFC的英文全称为“Power Factor  Correction”，意思是“功率因数校正”，功率因数指的是有效功率与总耗电量(视在功率)之间的关系，也就是有效功率除以总耗电量(视在功率)的比值。基本上功率因素可以衡量电力被有效利用的程度，当功率因素值越大，代表其电力利用率越高。计算机开关电源是一种电容输入型电路，其电流和电压之间的相位差会造成交换功率的损失，此时便需要PFC电路提高功率因数。目前的PFC有两种，一种为被动式PFC(也称无源PFC)和主动式PFC(也称有源式PFC)。The power factor corrector 400 is abbreviated as PFC, and the English name of PFC is called "Power Factor". Correction" means "power factor correction". The power factor refers to the relationship between the effective power and the total power consumption (apparent power), that is, the ratio of the effective power divided by the total power consumption (apparent power). Basically, the power factor can measure the extent to which power is effectively utilized. When the power factor value is larger, it represents the higher power utilization rate. The computer switching power supply is a capacitive input type circuit, and the phase difference between current and voltage will be This causes a loss of switching power. At this time, the PFC circuit is required to increase the power factor. There are two types of PFCs, one is passive PFC (also called passive PFC) and the active PFC (also called active PFC).
如图1所示，所述逆变器500的一端接负载3，另一端接母线电容500。As shown in FIG. 1 , one end of the inverter 500 is connected to the load 3 and the other end is connected to the bus capacitor 500 .
如图1所示，所述逆变器500通过第一开关接负载3，所述第一开关与所述控制器300连接。As shown in FIG. 1, the inverter 500 is connected to the load 3 through a first switch, and the first switch is connected to the controller 300.
如图1所示，所述控制器300连接有显示器及按键800。As shown in FIG. 1, the controller 300 is connected to a display and a button 800.
如图1所示，所述控制器300连接有辅助电源700。As shown in FIG. 1, the controller 300 is connected to an auxiliary power source 700.
如图1所示，所述双向变换器200为双向DC-DC变换器。As shown in FIG. 1, the bidirectional converter 200 is a bidirectional DC-DC converter.
如图2所示，Q1、Q2为电池升压开关管，Q3、Q4为电池降压开关管，L1为boost电感，L1的副边绕组为电池软启动电路，工作过程描述如下。As shown in Figure 2, Q1 and Q2 are battery boost switches, Q3 and Q4 are battery buck switches, L1 is boost inductor, and L1 secondary winding is battery soft start circuit. The working process is described as follows.
A：电池软启动：电池软启动是指UPS从电池开机，通过软启动电路将母线电容500(又称为BUS电容)从0V充电到额定值(比如350V)的过程。电池软启动过程中，电池升压开关管Q1、Q2PWM相位相差180°，电池升压开关管Q1、Q2的占空比小于40％，从0慢慢增大，电池升压开关管Q1、Q2有同时关闭的时候。参考图3，t0的时候电池升压开关管Q1开通，电池升压开关管Q2关闭，电池电流流过boost电感L1，此时boost电感L1储能；t1时刻电池升压开关管Q1关闭，boost电感L1通过二极管D3、D4释放能量，对BUS电容进行充电。t2时刻电池升压开关管Q2导通，重复电池升压开关管Q1导通的过程，boost电感L1储能；t3时刻电池升压开关管Q2关闭，boost电感L1释放能量对BUS电容；t4时刻下一个开关周期开始。A: Battery soft start: Battery soft start refers to the process in which the UPS is powered on from the battery and charges the bus capacitor 500 (also known as BUS capacitor) from 0V to the rated value (such as 350V) through the soft start circuit. During the soft start of the battery, the phase of the battery boost switch Q1 and Q2 PWM is 180°, the duty ratio of the battery boost switch Q1 and Q2 is less than 40%, and gradually increases from 0, and the battery boost switch Q1 and Q2 There are times when it is closed at the same time. Referring to Figure 3, when t0, the battery boost switch Q1 is turned on, the battery boost switch Q2 is turned off, the battery current flows through the boost inductor L1, and the boost inductor L1 is stored at this time; at time t1, the battery boost switch Q1 is turned off, boost Inductor L1 releases energy through diodes D3 and D4 to charge the BUS capacitor. At time t2, the battery boost switch Q2 is turned on, repeating the process of turning on the battery boost switch Q1, boost inductor L1 stores energy; at time t3, the battery boost switch Q2 is turned off, boost inductor L1 releases energy to BUS capacitor; t4 moment The next switching cycle begins.
B：BOOST-PUSH PULL工作方式：该方式Q1/Q2占空比大于50％。t0时刻电池升压开关管Q1导通，电池升压开关管Q2依然导通，此时变压器 短路，boost电感L1储能；t1时刻电池升压开关管Q2关闭，此时boost电感L1开始释放能量，boost电感L1上形成正向电压，变压器通过电池升压开关管Q1推挽升压；t2时刻电池升压开关管Q2导通，boost电感L1储能；t3时刻电池升压开关管Q1关闭，boost电感L1形成正向电压，变压器通过电池升压开关管Q2推挽升压；t4时刻电池升压开关管Q1导通，开始下一周期。B: BOOST-PUSH PULL working mode: The Q1/Q2 duty ratio is greater than 50%. At time t0, the battery boost switch Q1 is turned on, and the battery boost switch Q2 is still turned on. At this time, the transformer Short circuit, boost inductor L1 energy storage; t1 time battery boost switch Q2 is closed, at this time boost inductor L1 begins to release energy, boost inductor L1 forms a forward voltage, the transformer pushes the boost through the battery boost switch Q1; t2 At the moment, the battery boost switch Q2 is turned on, the boost inductor L1 stores energy; at time t3, the battery boost switch Q1 is turned off, the boost inductor L1 forms a forward voltage, and the transformer is boosted and boosted by the battery boost switch Q2; The boost switch Q1 is turned on to start the next cycle.
C：正激降压充电工作方式：该工作方式下电池降压开关管Q3、Q4同时导通，电池升压开关管Q1、Q2关闭。电池降压开关管Q3、Q4占空比小于50％，当电池降压开关管Q3、Q4导通的时候，BUS电容上的电压通过变压器在boost电感L1右端产生电压，然后通过boost电感L1滤波对电池进行充电；当电池降压开关管Q3、Q4关闭的时候，变压器通过二极管D1、D2去磁。C: Positive step-down charging operation mode: In this working mode, the battery step-down switching tubes Q3 and Q4 are simultaneously turned on, and the battery step-up switching tubes Q1 and Q2 are turned off. The battery buck switch tube Q3, Q4 duty cycle is less than 50%, when the battery step-down switch tube Q3, Q4 is turned on, the voltage on the BUS capacitor is generated by the transformer at the right end of the boost inductor L1, and then filtered by the boost inductor L1. The battery is charged; when the battery step-down switch Q3, Q4 is turned off, the transformer is demagnetized by diodes D1, D2.
本实用新型提供的一种不间断电源1，通过双向变换器200替代传统的推挽升压和反激降压两部分电路，双向变换器200升压工作的时候，电池电流连续，没有传统电路大纹波电流，避免对电池100的伤害，有效延长电池寿命；另外该双向变换器200可以工作于双向变换，避免传统电路中充电电路和放电电路相互独立，有效利用了元器件，降低电路成本。The utility model provides an uninterruptible power supply 1, which replaces the traditional push-pull boost and flyback buck two-part circuit through the bidirectional converter 200. When the bidirectional converter 200 is boosted, the battery current is continuous, and there is no conventional circuit. The large ripple current avoids damage to the battery 100 and effectively extends the battery life. In addition, the bidirectional converter 200 can operate in a bidirectional conversion to avoid the charging circuit and the discharging circuit being independent of each other in the conventional circuit, effectively utilizing components, and reducing circuit cost. .
以上内容是结合具体的优选实施方式对本实用新型所作的进一步详细说明，不能认定本实用新型的具体实施只局限于这些说明。对于本实用新型所属技术领域的普通技术人员来说，在不脱离本实用新型构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本实用新型的保护范围。 The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments, and the specific implementation of the present invention is not limited to the description. For those skilled in the art to which the present invention pertains, a number of simple deductions or substitutions may be made without departing from the spirit and scope of the invention.

Claims (7)

  1. 一种不间断电源，其特征在于：包括电池、双向变换器、控制器、功率因数修正器、母线电容和逆变器，其中，所述功率因数修正器、母线电容、逆变器串联，所述母线电容通过所述双向变换器与所述电池连接，所述双向变换器、逆变器、功率因数修正器分别与所述控制器连接。An uninterruptible power supply, comprising: a battery, a bidirectional converter, a controller, a power factor corrector, a bus capacitor, and an inverter, wherein the power factor corrector, the bus capacitor, and the inverter are connected in series The bus capacitance is connected to the battery through the bidirectional converter, and the bidirectional converter, the inverter, and the power factor corrector are respectively connected to the controller.
  2. 根据权利要求1所述的不间断电源，其特征在于：所述功率因数修正器接市电。The uninterruptible power supply of claim 1 wherein said power factor corrector is coupled to a mains supply.
  3. 根据权利要求1所述的不间断电源，其特征在于：所述逆变器接负载。The uninterruptible power supply of claim 1 wherein said inverter is coupled to a load.
  4. 根据权利要求3所述的不间断电源，其特征在于：所述逆变器通过第一开关接负载，所述第一开关与所述控制器连接。The uninterruptible power supply according to claim 3, wherein said inverter is connected to a load through a first switch, and said first switch is connected to said controller.
  5. 根据权利要求1所述的不间断电源，其特征在于：所述控制器连接有显示器及按键。The uninterruptible power supply according to claim 1, wherein said controller is connected to a display and a button.
  6. 根据权利要求1所述的不间断电源，其特征在于：所述双向变换器为双向DC-DC变换器。The uninterruptible power supply of claim 1 wherein said bidirectional converter is a bidirectional DC-DC converter.
  7. 根据权利要求1所述的不间断电源，其特征在于：所述控制器连接有辅助电源。 The uninterruptible power supply of claim 1 wherein said controller is coupled to an auxiliary power source.
PCT/CN2015/073887 2014-08-18 2015-03-09 Uninterruptible power supply WO2016026285A1 (en)

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