CN201975855U - Ammeter and power supply management circuit thereof - Google Patents

Ammeter and power supply management circuit thereof Download PDF

Info

Publication number
CN201975855U
CN201975855U CN 201120103503 CN201120103503U CN201975855U CN 201975855 U CN201975855 U CN 201975855U CN 201120103503 CN201120103503 CN 201120103503 CN 201120103503 U CN201120103503 U CN 201120103503U CN 201975855 U CN201975855 U CN 201975855U
Authority
CN
China
Prior art keywords
power supply
microprocessor
connected
battery
unit
Prior art date
Application number
CN 201120103503
Other languages
Chinese (zh)
Inventor
何方
卢昌树
孙奉健
Original Assignee
深圳长城开发科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳长城开发科技股份有限公司 filed Critical 深圳长城开发科技股份有限公司
Priority to CN 201120103503 priority Critical patent/CN201975855U/en
Application granted granted Critical
Publication of CN201975855U publication Critical patent/CN201975855U/en

Links

Abstract

The utility model discloses an ammeter and a power supply management circuit thereof. The power supply management circuit comprises a microprocessor power supply unit, a main power source detecting unit, a battery detecting unit, and a peripheral power source control unit, wherein the input end of the microprocessor power supply unit is connected with the main power source, a super capacitor, and at least one battery, the first output end of the microprocessor power supply unit is connected with a power source supply end of a microprocessor, the input end of the main power source detecting unit is connected with the main power source, the output end of the main power source detecting unit is connected with the first input port of the microprocessor, the input end of the battery detecting unit is connected with at least one battery, the output end of the battery detecting unit is connected with the second input port of the microprocessor, and the peripheral power source control unit is connected with the first output port of the microprocessor and used for determining whether and how the first output end of the microprocessor power supply unit is communicated with the power source supply end of a peripheral circuit according to signals of the first output port. By adopting the scheme, the reliability of the power source is improved, the power source can be effectively managed in an energy-saving manner, and the service life of a stand-by power supply can be prolonged.

Description

电表及其供电管理电路 Meter and power supply management circuit

技术领域 FIELD

[0001 ] 本实用新型涉及电力设备,尤其涉及一种电表中的电源系统。 [0001] The present invention relates to power equipment, in particular, to a power supply system in the meter. 背景技术 Background technique

[0002] 在现代电力计量系统中,电子式电能表由于具有可靠性高、测量精度准确以及功能多样化等特点而得到广泛应用。 [0002] In modern power measuring system, since the electronic energy meter with high reliability, accuracy and functional diversity of measurement accuracy and other characteristics are widely used. 电表的电源一般均为主电源和备用电源的组合,组合方式可以根据功能需求而多样,主电源一般可分为开关电源、线性电源和阻容分压电源,备用电源则可以采用电池和/或法拉电容等方式。 Generally based power meter and backup power, a combination of ways according to diverse functional requirements, generally can be divided into the main power supply switching, linear power supply and the RC partial pressure, battery backup power supply may be employed and / or Farah capacitors and other ways.

[0003] 随着电力系统中智能化,自动化的不断发展,计量功能不再是电表唯一的功能,各种通信功能逐渐在电表得到广泛应用,因此电表自身的电源系统也变得原来越复杂。 [0003] With the continuous development of intelligent power systems, automation, measurement function is no longer the sole function of the meter, various communication functions gradually been widely used in the meter, so the meter's own power system becomes more complex original. 同时IEC61052标准和IEC61053标准中对电表的功耗有严格的限制,这样就对电表的电源设计提出新的挑战:在满足功能不断增加的需求前提下,满足绿色节能的要求。 Meanwhile IEC61052 standard and IEC61053 standards in strict limits on the power meter, thus posing new challenges for the design of the power meter: in function to meet the increasing demand premise, to meet green energy requirements.

[0004] 因此,电表中如何合理管理供电电源,提高电源的效率,尤其是保证后备电源的长寿命,显得日益重要。 [0004] Thus, the meter of how the rational management of the power supply, improve the efficiency of the power supply, in particular to ensure the long-life back-up power supply, is becoming increasingly important.

实用新型内容 SUMMARY

[0005] 本实用新型要解决的技术问题在于克服上述现有技术存在的不足,而提出一种电表及其供电管理电路,以使电表中的电源系统更可靠,电能损耗更小,备用电源的寿命更长。 [0005] The present invention to solve the technical problem is to overcome the above disadvantages of the prior art, and provides a power management circuit and the meter, the meter so that the power supply system is more reliable, less power loss, a backup power source live longer.

[0006] 本实用新型针对上述技术问题而提出的技术方案包括,提出一种电表的供电管理电路,连接在供电电源与用电电路之间,该用电电路包括微处理器和与该微处理器相连的外围电路,该供电电源包括主电源、超级电容以及至少一电池,该超级电容是可充电地与该主电源相连的,该用电电路包括微处理器,该供电管理电路包括微处理器供电单元、主电源检测单元、电池检测单元和外围电源控制单元,该微处理器供电单元输入端与该主电源、超级电容以及至少一电池均相连、第一输出端与该微处理器的电源供给端相连,该主电源检测单元的输入端与该主电源相连、输出端与该微处理器的第一输入端口相连,该电池检测单元的输入端与该至少一电池相连、输出端与该微处理器的第二输入端口相连,该外围电源控制单元与该微处理器的第一输出端口相连 [0006] The present invention for the above-mentioned technical problems and technical solutions include, proposes a meter power management circuit, connected between the power supply and the electrical circuit, the electrical circuit includes a microprocessor and the microprocessor is connected to the peripheral circuit, the power supply includes a main power supply, at least one super capacitor and a battery, charging the super capacitor is connected to the main power supply of the electric circuit includes a microprocessor, the power management circuit includes a microprocessor powered unit, a main power supply detection unit, the battery detection unit and the peripheral power supply control unit, the microprocessor unit power supply input terminal and the main power supply, and at least one super capacitor battery are connected, a first output terminal of the microprocessor power supply terminal is connected to an input terminal of the main power detecting unit is connected to the main power supply, a first input connected to an output port of the microprocessor, connected to the input of the battery cell and detecting the at least one battery, and the output terminal the microprocessor is connected to a second input port, the peripheral power supply control unit to the first output port of the microprocessor 并根据该第一输出端口的信号确定是否及如何将该微处理器供电单元的第一输出端与该外围电路的电源供给端连通。 And determining whether and how to communicate with the first output of the microprocessor and the power supply unit is a power supply terminal of the peripheral circuit according to the signal from the first output port.

[0007] 该外围电源控制单元为三端的受控开关,该受控开关的一端与该微处理器供电单元的第一输出端相连、另一端与该外围电路的电源供给端相连而控制端与该微处理器的第一输出端口相连,该受控开关在该主电源正常供电时处于导通状态并在该主电源非正常供电时处于受控通断状态。 [0007] The peripheral control unit is a three-terminal power controlled switch, the controlled switch having one end connected to the first output terminal of the power supply unit of the microprocessor, the other end of the power supply terminal of the peripheral circuit is connected to the control terminal the microprocessor is connected to a first output port, the controlled switch is in the oN state when the normal power supply and the main power supply is controlled on-off state when the main power supply abnormal.

[0008] 该至少一电池中包括时钟备用电池,该用电电路包括与该微处理器相连的实时时钟电路,该供电管理电路还包括实时时钟供电单元,该实时时钟供电单元的输入端与该微处理器供电单元的第二输出端以及该时钟备用电池均相连、输出端与该实时时钟电路的电源供给端相连。 [0008] the at least one battery comprising a battery backup clock, the real time clock circuit comprises a power circuit connected to the microprocessor, the power management circuit further comprises a real-time clock input terminal of the power supply unit, the real-time clock to the power supply unit the microprocessor power supply unit and a second output terminal of the backup battery are connected to a clock output terminal connected to a power supply terminal of the real-time clock circuit.

[0009] 该主电源、超级电容以及至少一电池相互之间是通过隔离器件相互隔离的,该微处理器供电单元的第一输出端和第二输出端对应于该主电源、超级电容以及至少一电池的两路相互隔离的输出。 [0009] between the main power supply, and at least one super-capacitor is interconnected cells isolated from each other by an isolation device, a first output and a second output terminal of the microprocessor corresponding to the power supply unit to the main power supply, and at least supercapacitor two mutually isolated output of a battery.

[0010] 该时钟备用电池是串接常开的受控开关而可选择性地投入使用的。 [0010] The clock backup battery is connected in series a normally open controlled switch being selectively put into use. [0011 ] 该至少一电池中包括外部可更换备用电池。 [0011] the at least one cell comprises an outer replaceable backup battery.

[0012] 该至少一电池中还包括内部备用电池,该内部备用电池和外部可更换备用电池是相互隔离且并联的。 [0012] The at least one cell further comprises an internal backup battery, the internal and external backup battery may be replaceable backup battery is isolated from each other and in parallel.

[0013] 该内部备用电池是串接常开的受控开关而可选择性地投入使用的。 [0013] The internal backup battery is connected in series a normally open controlled switch being selectively put into use.

[0014] 该主电源是直接或者经由一隔离器件而与该主电源检测单元的输入端相连的。 [0014] The main power supply is directly or via a spacer means and connected to the input terminal of the main power source detecting unit.

[0015] 本实用新型针对上述技术问题而提出的技术方案还包括,提出一种电表,其包括上述的供电管理电路。 [0015] The present invention for the above-mentioned technical problems and technical solution further comprises, to provide a meter, which includes the above power management circuit.

[0016] 与现有技术相比,本实用新型的电表及其供电管理电路通过自动切换各种供电电源,可以提高电源的可靠性,并且能够高效、节能地管理电源,延长备用电源的使用寿命。 [0016] Compared with the prior art, the present invention meter and power management circuit by automatically switching various power supply, the power supply reliability can be improved, and can be efficiently, power saving management, extend the life of the backup power supply .

附图说明 BRIEF DESCRIPTION

[0017] 图1是本实用新型的电表实施例的电原理框图。 [0017] FIG. 1 is a block diagram of an embodiment of an electrical meter of the present invention embodiment.

[0018] 图2是本实用新型的供电管理电路实施例的电原理框图。 [0018] FIG. 2 is an electrical block diagram of an embodiment of the present invention the power supply management circuit.

[0019] 图3是本实用新型的供电管理电路实施例的电原理图。 [0019] FIG. 3 is an electrical schematic diagram of the embodiment of the present invention, the power supply management circuit embodiment.

具体实施方式 Detailed ways

[0020] 以下结合附图,对本实用新型予以进一步地详尽阐述。 [0020] conjunction with the drawings, further elaboration of the present invention to be.

[0021] 如附图1和图2所示,本实用新型的电表的电路结构大致包括:供电电源1、用电电路3和连接在这两者之间的供电管理电路2。 [0021] As FIG. 1, the circuit configuration of the present invention and Figure 2 is substantially the meter comprising: a power supply 1, and the electric circuit 3 is connected between the two power management circuit 2. 该供电管理电路2的设置可以对不同供电电源的输出进行统一管理分配,结合微处理器的自动控制,实现备有电源的高效节能使用。 The power management circuit 2 is provided can be unified management of allocation of different output power supply, in conjunction with automatic control of the microprocessor, to achieve energy-efficient use of available power.

[0022] 供电电源1包括主电源11、超级电容12、内部备用电池13、外部可更换备用电池14和时钟备用电池15,该超级电容12是可充电地与该主电源11相连的。 [0022] The power supply 1 includes a main power supply 11, super capacitors 12, 13 internal backup battery, external backup battery may be replaceable backup battery 14 and the clock 15, the super capacitor 12 is connected to the rechargeable main power supply 11.

[0023] 用电电路3包括微处理器31、外围电路32以及实时时钟电路33。 [0023] The electrical circuit 3 comprises a microprocessor 31, a peripheral circuit 32 and real time clock circuit 33.

[0024] 供电管理电路2包括微处理器供电单元21、主电源检测单元22、电池检测单元23、 外围电源控制单元M和实时时钟供电单元25。 [0024] The power management circuit power supply unit 2 includes a microprocessor 21, a main power detecting unit 22, the battery detection unit 23, the control unit M and the peripheral power supply unit 25 real-time clock. 该微处理器供电单元21输入端与该主电源11、超级电容12、内部备用电池13和外部可更换备用电池14均相连,而第一输出端与该微处理器31的电源供给端相连,主电源检测单元22的输入端与该主电源11相连、输出端与该微处理器31的第一输入端口相连,该电池检测单元23的输入端与内部备用电池13和外部可更换备用电池14均相连、输出端与该微处理器31的第二输入端口相连,该外围电源控制单元M与该微处理器31的第一输出端口相连并根据该第一输出端口的信号确定是否及如何将该微处理器供电单元21的第一输出端与该外围电路32的电源供给端连通。 Input of the microprocessor 21 with the main power supply unit 11, a super capacitor 12, the internal and external backup battery 13 may be replaceable backup battery 14 are connected, and a first output terminal connected to a power supply terminal of the microprocessor 31, detecting input of the main power supply unit 22 is connected to the main power source 11, a first input connected to an output port of the microprocessor 31, the battery detection unit 23 is input with the internal and external backup battery 13 may be replaceable backup battery 14 are connected to the output terminal 31 to the second input port of the microprocessor, the peripheral power supply control unit M connected with the first output port of the microprocessor 31 and the first output port according to the signal to determine whether and how to the microprocessor power supply unit 21 communicates a first output terminal and a power supply terminal of the peripheral circuit 32. 该实时时钟供电单元25的输入端与该微处理器供电单元21的第二输出端及该时钟备用电池15 均相连、输出端与该实时时钟电路33的电源供给端相连。 The real-time clock input terminal 25 of the microprocessor unit power supply unit 21 and a second output terminal of the backup battery 15 are connected to the clock output terminal is connected to the real time clock circuit 33 of the power supply end.

[0025] 正常情况下,主电源11为整个电表的电路系统供电,同时对超级电容12进行充电。 The [0025] Normally, the main power supply circuit 11 for the entire system of the meter, while the super capacitor 12 is charged. 当主电源11掉电后,系统自动切换到超级电容12供电,超级电容12为电路系统的第一备用电源,此时主电源检测单元22将掉电信息通知微处理器31,微处理器31在完成相应的操作后进入低功耗模式。 When the main power source 11 is powered down, the system automatically switches to the super capacitor power supply 12, a first super capacitor 12 to the secondary power supply circuit system, when the primary power source detecting unit 22 down information notification microprocessor 31, the microprocessor 31 after completion of the corresponding operation into low power mode. 电压检测电路23同时检测两个电池13、14的欠压情况,以便及时通知微处理器31给出警报。 A voltage detection circuit 23 detects an undervoltage condition while the two batteries 13 and 14, so as to inform the microprocessor 31 gives an alarm. 超级电容12只能够短期的维持电表工作,当超级电容12 的电压降到等于或低于内部备用电池13或外部可更换电池14电压时,电路系统自动将电池投入使用,使得超级电容12和电池13或14同时为电路系统工作提供电源,达到短期主电源11掉电后充分使用超级电容12,尽量延长电池13或14的使用寿命的目的。 Super capacitor 12 can be short to maintain the working meter, when the voltage of the super capacitor 12 is equal to or falls below the internal or external backup battery 13 when the battery 14 voltage can be replaced, it will be automatically put into the battery, so that the super capacitor 12 and the battery 13 or 14 circuitry providing the power for working to achieve short-term after the main power source 11 down sufficiently super capacitor 12, try to extend the life of battery 13 or the object 14. 内部备用电池13和外部可更换备用电池14都为电表的电路系统提供电源,两者是并联关系,当超级电容12和内部备用电池13电量用完时电池检测电路23给出警报,通知电力公司等用户安装外部可更换的备用电池14,此时变为超级电容12和电池14同时为电路系统提供备用电源。 External and internal backup battery 13 may be replaceable backup battery 14 provides power to the circuitry of the meter, is both a parallel relationship, when the super capacitor 12 and the battery 13 internal backup battery power runs out detection circuit 23 gives an alarm to notify the power company installing an external user such replaceable backup battery 14, and at this time becomes the super capacitor 12 while the battery 14 provides backup power for circuitry. 当电容12和电池14电量用完时检测电路23再次给出警报通知用户更换外部电池14,如此循环保证有充足的备用电源维持系统正常工作。 When the capacitor 12 and the battery power runs out 14 gives an alarm detection circuit 23 again notifies the user to replace the external battery 14, and so ensure that sufficient backup power system to work properly.

[0026] 在掉电模式下,由超级电容12和电池13、14构成的后备电源只给微处理器31供电,只有当微处理器31通过相应的方式,比如:定时时间到等事件触发,唤醒后才控制外围电源控制单元M给外围电路32供电并检测电池13、14的电压,在完成相关的操作后,再通过外围电源控制单元M关断对外围电路32的供电,返回低功耗模式,以最大限度地节省备用电源的电量消耗。 [0026] In the power-down mode, the backup power supply 12 composed of a super capacitor 13, and a battery only to power the microprocessor 31, the microprocessor 31 only when the corresponding way, for example: regular time to trigger events such as, after wakeup control peripheral power control unit M to the peripheral circuit 32 and detects the voltage of the battery power supply 13 and 14, after the relevant operation is completed, then the control unit through the external power supply of the peripheral off-M circuit 32, low-power returns mode to maximize power savings standby power consumption.

[0027] 在这些用电电路3中,实时时钟电路33的电源是最高优先级的,主电源11、电池13、14、15和超级电容12都为实时时钟电路33提供电能,但时钟备用电池15是实时时钟电路33的专用电源,不给其他电路供电,以最大限度地保证时钟信息不会丢失。 [0027] In the electric circuit 3, power real time clock circuit 33 is the highest priority, the main power source 11, a battery 13, 14 and the super capacitor 12 provides power to the real time clock circuit 33, but the clock backup battery 15 real-time clock circuit 33 is a dedicated power supply, not to other circuitry, to maximize the clock to ensure that information is not lost. 正常情况下,由主电源11供电,掉电后先由超级电容12供电,而后电池13或14供电;如果电池13、 14同时供电时,电压高的先供电,在电池13、14电压低于电池15电压后,由时钟备用电池15给实时时钟电路33供电,保证时钟数据的不丢失。 Under normal circumstances, the main power supply 11, after power supply start with super capacitor 12, and then the battery power supply 13 or 14; If the battery 13, while power supply 14, the first high voltage power supply, a voltage lower than the battery 13, after the battery voltage 15, a real time clock circuit 33 a clock supply backup battery 15, ensure that the clock of data is not lost. 以上供电顺序可以不需要微处理器31干预而自动平稳切换,长期可靠。 Sequence may not need to supply the above microprocessor 31 intervention smooth automatic switching, long-term reliability.

[0028] 图3示出了本实用新型的供电管理电路2的电路原理。 [0028] FIG. 3 shows a circuit diagram of the present invention the power management circuit 2. 其中,主电源Vin,超级电容为FCl,内部备用电池为BATl,外部可更换备用电池为BAT2,时钟备用电池为BAT3。 Wherein the main power supply Vin, the super capacitor is FCl, BATL internal battery backup, externally replaceable backup battery BAT2 is, the clock backup battery BAT3. 主电源Vin经过隔离器件Dl分开两路电源输出,一路输出通过电阻R2对超级电容FCl充电和供给掉电模式下需要工作的电路,另一路VCC供给掉电模式下不需工作的电路,电阻R2可以限制控制充电电流,同时使超级电容FCl放电效率更高。 Power source Vin through the primary isolation component Dl two separate power supply outputs, one output circuit through the resistor R2 and the power-down mode is supplied to the work required FCl super capacitor charged, the other path VCC power-down mode without operating supply circuit, the resistor R2 controlling the charging current can be limited, while the super capacitor FCl higher discharge efficiency. 电路Ul和电阻Rl完成在主电源Vin下降到检测阀门电压通知微处理器,以实现主电源检测功能。 Circuit Ul and resistor Rl done in the main power source voltage Vin drops to the valve detect signal the microprocessor, the main power supply in order to achieve detection. 隔离器件Dl、D2、D3、 D4、D5以及D6实现各电源之间的隔离,防止电源间相互充电、干扰。 Isolation devices Dl, D2, D3, D4, D5 and D6 achieve isolation between the power supply, preventing the charging power between the mutual interference. PMOS管Ql和电阻R3 构成外围电源控制电路,通过微处理器给出的控制信号可实现外围电源的开关功能。 PMOS transistor Ql and resistor R3 form a peripheral power supply control circuit by the control signal given by the microprocessor may be implemented in the peripheral power switching function.

[0029] 需要说明的是,为了提高内部备用电池13和时钟备用电池15的使用寿命,这两个电池13、15是否投入使用是受控的,也就是在电池13、15的输出端串设有受控开关,开关跨接在其输出处和用电电路之间。 [0029] Incidentally, in order to improve the life of the backup battery 13 and clock 15 internal backup battery, two batteries 13, 15 is controlled whether in use, is provided at the output of the battery strings 13, 15 there is a controlled switch which is connected across its output and the power circuit.

[0030] 与现有技术相比,本实用新型的电表及其供电管理电路的有益效果包括:自动切换各种供电电源,提供电源的可靠性;高效、节能地管理电源,延长备用电源的使用寿命; 电路简单,实用,成本较低;受环境温度等因素影响小,工作稳定。 [0030] Compared with the prior art, the beneficial effects of the present invention the meter and power management circuit comprises: a variety of automatic switching power supply, provides power reliability; high efficiency power management, extension of standby power life; circuit is simple, practical, low cost; affected by temperature and other factors is small, stable operation.

[0031] 上述内容,仅为本实用新型的较佳实施例,并非用于限制本实用新型的实施方案,本领域普通技术人员根据本实用新型的主要构思和精神,可以十分方便地进行相应的变通或修改,比如:将图2中的位于主电源Vin与掉电检测之间的第一隔离,也就是图3中隔离器件Dl中的一个二极管去掉,将主电源Vin与掉电检测的输入端直接短接,故本实用新型的保护范围应以权利要求书所要求的保护范围为准。 [0031] The foregoing are merely preferred embodiments of the present invention embodiments are not intended to limit the embodiments of the present invention, those of ordinary skill in the art according to the main idea of ​​the present invention and the spirit, it can be very conveniently carried out appropriate modifications or adaptations, for example: in FIG. 2 will be located between the first spacer and the main power source Vin brownout detection, i.e. the isolation device of FIG. 3 in a diode Dl is removed, and the input power source Vin down main detection side shorted directly, so the scope of protection of the present invention should be defined by the claims scope of the appended claimed and their equivalents.

Claims (10)

1. 一种电表的供电管理电路,连接在供电电源与用电电路之间,该用电电路包括微处理器和与该微处理器相连的外围电路,其特征在于,该供电电源包括主电源、超级电容以及至少一电池,该超级电容是可充电地与该主电源相连的,该用电电路包括微处理器,该供电管理电路包括微处理器供电单元、主电源检测单元、电池检测单元和外围电源控制单元,该微处理器供电单元输入端与该主电源、超级电容以及至少一电池均相连、第一输出端与该微处理器的电源供给端相连,该主电源检测单元的输入端与该主电源相连、输出端与该微处理器的第一输入端口相连,该电池检测单元的输入端与该至少一电池相连、输出端与该微处理器的第二输入端口相连,该外围电源控制单元与该微处理器的第一输出端口相连并根据该第一输出端口的信号确定是否及如何将 A meter power management circuit, connected between the power supply and the electrical circuit, the electrical circuit includes a microprocessor and a peripheral circuit connected to the microprocessor, wherein the power supply includes a main power supply , at least one super capacitor and a battery, charging the super capacitor is connected with the main power supply, the electrical circuit includes a microprocessor, the power supply management circuit includes a microprocessor unit, a main power supply detection unit, detection unit cell and a peripheral power supply control unit, the microprocessor unit power supply input terminal and the main power supply, and at least one super capacitor battery are connected, a first output terminal connected to a power supply terminal of the microprocessor, the input of the main power detection unit terminal and the main power supply connected to the output terminal and the first input port of the microprocessor, connected to the input of the battery cell and detecting the at least one battery, a second input connected to an output port of the microprocessor, the peripheral power control unit connected to the first output port of the microprocessor and determine if and how the signal in accordance with the first output port 微处理器供电单元的第一输出端与该外围电路的电源供给端连通。 A first output terminal of the power supply unit in communication with the microprocessor power supply terminal of the peripheral circuit.
2.依据权利要求1所述的供电管理电路,其特征在于,该外围电源控制单元为三端的受控开关,该受控开关的一端与该微处理器供电单元的第一输出端相连、另一端与该外围电路的电源供给端相连而控制端与该微处理器的第一输出端口相连,该受控开关在该主电源正常供电时处于导通状态并在该主电源非正常供电时处于受控通断状态。 2. The power management circuit according to claim 1, wherein the peripheral power supply control unit is a three terminal controlled switch, the controlled switch having one end connected to the first output terminal of the power supply unit of the microprocessor, the other and the control terminal connected to one end coupled to the first output port of the microprocessor and the power supply terminal of the peripheral circuit, the controlled switch is in the oN state when the main power of the normal power supply and, when in the main power supply abnormal controlled on-off state.
3.依据权利要求1所述的供电管理电路,其特征在于,该至少一电池中包括时钟备用电池,该用电电路包括与该微处理器相连的实时时钟电路,该供电管理电路还包括实时时钟供电单元,该实时时钟供电单元的输入端与该微处理器供电单元的第二输出端以及该时钟备用电池均相连、输出端与该实时时钟电路的电源供给端相连。 3. The power management circuit according to claim 1, wherein the at least one battery comprising a battery backup clock, the real time clock circuit comprises a power circuit connected to the microprocessor, the power management circuit further comprises a real-time the clock supply unit, the real-time clock input terminal of the power supply unit and a second output terminal and the clock of the backup battery power supply unit are connected to the microprocessor, an output terminal connected to a power supply terminal of the real-time clock circuit.
4.依据权利要求3所述的供电管理电路,其特征在于,该主电源、超级电容以及至少一电池相互之间是通过隔离器件相互隔离的,该微处理器供电单元的第一输出端和第二输出端对应于该主电源、超级电容以及至少一电池的两路相互隔离的输出。 Said power management circuit 3 and the output terminal of the first power supply unit of the microprocessor according to claim 4, characterized in that, between the main power supply, and at least one supercapacitor cell isolated from each other by mutual isolation means, a second output terminal corresponding to the two main power supply, the super capacitor and at least one isolated cell output.
5.依据权利要求3所述的供电管理电路,其特征在于,该时钟备用电池是串接常开的受控开关而可选择性地投入使用的。 3, the power management circuit according to claim 5, characterized in that the clock backup battery is connected in series a normally open controlled switch being selectively put into use.
6.依据权利要求1所述的供电管理电路,其特征在于,该至少一电池中包括外部可更换备用电池。 The power management circuit according to claim 1, 6., wherein the at least one cell comprises an outer replaceable backup battery.
7.依据权利要求6所述的供电管理电路,其特征在于,该至少一电池中还包括内部备用电池,该内部备用电池和外部可更换备用电池是相互隔离且并联的。 6, the power management circuit according to claim 7, wherein the at least one cell further comprises an internal backup battery, the internal and external backup battery may be replaceable backup battery is isolated from each other and in parallel.
8.依据权利要求7所述的供电管理电路,其特征在于,该内部备用电池是串接常开的受控开关而可选择性地投入使用的。 The power management circuit according to claim 7, 8, characterized in that the internal backup battery is connected in series a normally open controlled switch being selectively put into use.
9.依据权利要求1所述的供电管理电路,其特征在于,该主电源是直接或者经由一隔离器件而与该主电源检测单元的输入端相连的。 9. The power management circuit according to claim 1, wherein the main power supply is directly or via a spacer means and connected to the input terminal of the main power source detecting unit.
10. 一种电表,其特征在于,包括权利要求1至9中任一项所述的供电管理电路。 A meter, characterized by comprising a power management circuit according to claim 9 as claimed in claim.
CN 201120103503 2011-04-11 2011-04-11 Ammeter and power supply management circuit thereof CN201975855U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120103503 CN201975855U (en) 2011-04-11 2011-04-11 Ammeter and power supply management circuit thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201120103503 CN201975855U (en) 2011-04-11 2011-04-11 Ammeter and power supply management circuit thereof

Publications (1)

Publication Number Publication Date
CN201975855U true CN201975855U (en) 2011-09-14

Family

ID=44580953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201120103503 CN201975855U (en) 2011-04-11 2011-04-11 Ammeter and power supply management circuit thereof

Country Status (1)

Country Link
CN (1) CN201975855U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104092289A (en) * 2014-08-06 2014-10-08 广东电网公司珠海供电局 Ammeter
CN104375001A (en) * 2013-08-13 2015-02-25 国家电网公司 Power supply chip special for electric energy meter and electric energy meter
CN106157594A (en) * 2016-08-12 2016-11-23 北京溢美四方软件技术有限公司 The intelligent electric meter communication unit of a kind of built-in stand-by power supply and control method
CN106849329A (en) * 2017-01-25 2017-06-13 青岛盛邦慧通能源科技有限公司 A kind of electric energy meter power supply circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104375001A (en) * 2013-08-13 2015-02-25 国家电网公司 Power supply chip special for electric energy meter and electric energy meter
CN104375001B (en) * 2013-08-13 2017-11-21 国家电网公司 Electric energy meter power source special chip and electric energy meter
CN104092289A (en) * 2014-08-06 2014-10-08 广东电网公司珠海供电局 Ammeter
CN106157594A (en) * 2016-08-12 2016-11-23 北京溢美四方软件技术有限公司 The intelligent electric meter communication unit of a kind of built-in stand-by power supply and control method
CN106849329A (en) * 2017-01-25 2017-06-13 青岛盛邦慧通能源科技有限公司 A kind of electric energy meter power supply circuit

Similar Documents

Publication Publication Date Title
CN100359418C (en) Control device of zero power consumption readiness power source
JP3892812B2 (en) Power supply
CN102496991A (en) Backup lithium ion battery pack management method and management system thereof
CN102263428B (en) Distributed battery management system (BMS) based on three-layer CAN (controller area network) network and self-powered characteristic
CN201699442U (en) Intelligent battery management system
CN101291076A (en) Solar and commercial power complementary uninterruptable power system
CN102593898B (en) Lithium cell management system
CN101841187B (en) Power management power supply system for electronic electric energy meter
CN101562349A (en) Method and system of energy-saving control for modular UPS
CN102157966B (en) Intelligent photovoltaic controller with multiple functions
CN200956524Y (en) Intelligent multi-path power supply switching controller
CN103825351B (en) An intelligent energy storage emergency power system
CN101232110A (en) Method and apparatus for charging batteries
CN101452264A (en) Power control device for zero power consumption standby and safety operation
CN103139936B (en) Energy-self-feeding wireless sensor network node
CN101902832A (en) Lower power consumption wireless sensor network node device capable of monitoring vibration continuously
CN201409004Y (en) Storage battery charging-discharging intelligent control circuit
CN102338823B (en) Brownout detection method and circuit of the meter system
CN201599702U (en) A stopgap lighting system
CN102931702B (en) Battery unit parallel system, device and battery unit parallel method
CN203056953U (en) Driver and bus capacitor discharge circuit thereof
CN202189085U (en) Total voltage loss detection chip and electric energy meter
CN201623642U (en) Intelligent low power consumption power supply adaptor
CN2599596Y (en) Predetecting and processing device before cell depletion
CN101776240A (en) System and method for emergency lighting

Legal Events

Date Code Title Description
C14 Granted