CN203218875U - Energy storage circuit with undervoltage surge protection - Google Patents

Energy storage circuit with undervoltage surge protection Download PDF

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Publication number
CN203218875U
CN203218875U CN 201220601776 CN201220601776U CN203218875U CN 203218875 U CN203218875 U CN 203218875U CN 201220601776 CN201220601776 CN 201220601776 CN 201220601776 U CN201220601776 U CN 201220601776U CN 203218875 U CN203218875 U CN 203218875U
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CN
China
Prior art keywords
storage capacitor
energy storage
power supply
semiconductor
oxide
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn - After Issue
Application number
CN 201220601776
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Chinese (zh)
Inventor
彭布坤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Aviation Electric Co Ltd
Original Assignee
Shanghai Aviation Electric Co Ltd
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 Shanghai Aviation Electric Co Ltd filed Critical Shanghai Aviation Electric Co Ltd
Priority to CN 201220601776 priority Critical patent/CN203218875U/en
Application granted granted Critical
Publication of CN203218875U publication Critical patent/CN203218875U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

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Abstract

The utility model relates to an energy storage circuit with undervoltage surge protection, which comprises an energy storage capacitor. The energy storage circuit with undervoltage surge protection is characterized in that: the anode of the energy storage capacitor is connected with the source of a MOS tube; the drain of the MOS tube is connected with a positive input end of an input power supply through a charging resistor; the grid of the MOS tube is connected with the positive input end of the input power supply through a driving resistor; the cathode of the energy storage capacitor is connected with the negative input end of the input power supply; the grid of the MOS tube is connected with the anode of a voltage stabilizing diode; and the cathode of the voltage stabilizing diode is connected with the source of the MOS tube. The energy storage circuit with undervoltage surge protection has the following functions: preventing overlarge charging current in instant electrification, preventing damage of the energy storage capacitor and other electronic components by large current, preventing repeated charging/discharging phenomenon when power supply voltage is changeable; and reducing effect of the service life of the energy storage capacitor.

Description

A kind of accumulator of under-voltage surge protection
Technical field
The utility model relates to the accumulator of under-voltage surge protection among a kind of GJB181-1986 of satisfying, and can be applicable to satisfy the DC power-supply circuit of under-voltage surge protection requirement among the GJB181-1986.
Background technology
In GJB181-1986, comprise an anti-under-voltage surge requirement in the specification requirement to the airborne power consumption equipment of direct current, when namely the 28V input voltage of direct-flow electricity utilization apparatus dropped to 8V and continues 50ms, power consumption equipment is interruption of work not.
The common scheme of under-voltage surge protection can directly be placed big capacity storage capacitor at power input, and the shortcoming of doing like this is exactly at powered on moment, and it is very big that electric current is understood moment, damages storage capacitor and other some components and parts easily; Simultaneously also can cause unnecessary the repeating of storage capacitor to discharge and recharge, influence the life-span of storage capacitor.
The utility model content
The purpose of this utility model provides a kind of accumulator of under-voltage surge protection, has solved the problem that the powered on moment electric current is excessive, storage capacitor repeats to discharge and recharge in the common accumulator scheme.
To achieve these goals; the technical solution of the utility model is as follows: a kind of accumulator of under-voltage surge protection; comprise storage capacitor; the positive pole that it is characterized in that this storage capacitor is connected with the source electrode of metal-oxide-semiconductor; the drain electrode of metal-oxide-semiconductor is connected by the positive input terminal of charging resistor with the input power supply; the grid of metal-oxide-semiconductor is connected with the positive input terminal of input power supply by driving resistance; the negative pole of this storage capacitor connects the negative input end of input power supply; the grid of metal-oxide-semiconductor is connected with the positive pole of voltage stabilizing didoe, and the negative pole of voltage stabilizing didoe is connected with the source electrode of metal-oxide-semiconductor.The drain electrode of this metal-oxide-semiconductor is connected with the positive pole of diode, and diode cathode is connected with the positive input terminal of input power supply.Storage capacitor is in parallel with a discharge resistance.
Advantage of the present utility model is: the charging current when moment powers on is unlikely to excessive, avoided big electric current to the infringement of storage capacitor and other electronic devices and components, when shake takes place in supply voltage, the charge and discharge phenomena that storage capacitor can not repeat has reduced the influence to the storage capacitor life-span.
Description of drawings
Accompanying drawing 1 is the utility model embodiment function diagram.
Accompanying drawing 2 is the utility model embodiment circuit block diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
Accompanying drawing 1 is the utility model embodiment functional block diagram, when 28V DC power supply normal power supply, and the power consumption equipment operate as normal, the storage capacitor in the accumulator 1 is full of electric energy; When 28V DC power supply instant power-down, the storage capacitor in this accumulator 1 begins power consumption equipment 2 release electric energy to the back-end, and when the 28V input voltage of power consumption equipment dropped to 8V and continues 50ms, power consumption equipment is interruption of work not.
Accompanying drawing 2 is physical circuit block diagram of the present utility model.This circuit diagram comprises storage capacitor C, is used for storing the electric energy that external power source provides, and when the unexpected power down of external power source, this storage capacitor begins discharge, offers the power consumption equipment of rear end; Metal-oxide-semiconductor Q, parasitic diode by this metal-oxide-semiconductor charges to storage capacitor, the shutoff of opening by this metal-oxide-semiconductor is controlled the discharge process of storage capacitor, when having only voltage between the grid-source electrode of metal-oxide-semiconductor less than cut-in voltage, and the just conducting of the passage of metal-oxide-semiconductor; Voltage stabilizing didoe Z, when voltage stabilizing didoe was breakdown, the driving voltage of metal-oxide-semiconductor Q was stabilized in the clamp voltage of voltage stabilizing didoe; Charging resistor R2, the buffer resistance when charging as storage capacitor C; Discharge resistance R1 when product is in idle state, can consume the electric energy that remains among the storage capacitor C by discharge resistance R1; Drive resistance R 3, the size that drives resistance has determined the time that metal-oxide-semiconductor is opened; General-purpose diode D1, when storage capacitor C discharges when working to the rear end power consumption equipment, this general-purpose diode D1 can stop electric current to pass through from charging resistor R2.
As shown in Figure 2, this drives resistance, influences the service time of metal-oxide-semiconductor, and the service time of this metal-oxide-semiconductor must drop to the power consumption equipment minimum less than the 28V input voltage and be worth the used time; The size of this charging resistor influences the size of storage capacitor charging interval length and impulse current.When accumulator began store electrical energy, charging current was charged to storage capacitor through the parasitic diode of this charging resistor and this metal-oxide-semiconductor; When storage capacitor begins to provide electric energy to the rear end power consumption equipment, before the 28V power input voltage drops to power consumption equipment minimum value, metal-oxide-semiconductor must be opened, this moment, voltage stabilizing didoe can be breakdown, the driving voltage of metal-oxide-semiconductor is stabilized in the clamp voltage of voltage stabilizing didoe, and the stored electric energy of storage capacitor offers the rear end power consumption equipment by conductive channel and the general-purpose diode of metal-oxide-semiconductor.

Claims (3)

1. the accumulator of a under-voltage surge protection; comprise storage capacitor; the positive pole that it is characterized in that this storage capacitor is connected with the source electrode of metal-oxide-semiconductor; the drain electrode of metal-oxide-semiconductor is connected by the positive input terminal of charging resistor with the input power supply; the grid of metal-oxide-semiconductor is connected with the positive input terminal of input power supply by driving resistance; the negative pole of this storage capacitor connects the negative input end of input power supply, and the grid of metal-oxide-semiconductor is connected with the positive pole of voltage stabilizing didoe, and the negative pole of voltage stabilizing didoe is connected with the source electrode of metal-oxide-semiconductor.
2. by the described accumulator of claim 1, it is characterized in that: the drain electrode of this metal-oxide-semiconductor is connected with the positive pole of diode, and diode cathode is connected with the positive input terminal of input power supply.
3. by the described accumulator of claim 1, it is characterized in that: storage capacitor is in parallel with a discharge resistance.
CN 201220601776 2012-11-15 2012-11-15 Energy storage circuit with undervoltage surge protection Withdrawn - After Issue CN203218875U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220601776 CN203218875U (en) 2012-11-15 2012-11-15 Energy storage circuit with undervoltage surge protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220601776 CN203218875U (en) 2012-11-15 2012-11-15 Energy storage circuit with undervoltage surge protection

Publications (1)

Publication Number Publication Date
CN203218875U true CN203218875U (en) 2013-09-25

Family

ID=49208378

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220601776 Withdrawn - After Issue CN203218875U (en) 2012-11-15 2012-11-15 Energy storage circuit with undervoltage surge protection

Country Status (1)

Country Link
CN (1) CN203218875U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102983561A (en) * 2012-11-15 2013-03-20 上海航空电器有限公司 Tank circuit protected by undervoltage surges
CN104038244A (en) * 2014-06-12 2014-09-10 四川联友电讯技术有限公司 Mobile base station transceiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102983561A (en) * 2012-11-15 2013-03-20 上海航空电器有限公司 Tank circuit protected by undervoltage surges
CN102983561B (en) * 2012-11-15 2017-05-31 上海航空电器有限公司 A kind of accumulator of under-voltage surge protection
CN104038244A (en) * 2014-06-12 2014-09-10 四川联友电讯技术有限公司 Mobile base station transceiver

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20130925

Effective date of abandoning: 20170531