CN201536261U - Electrolytic capacitors voltage-sharing discharge circuit of power-supply device with high-power and high voltage bus bar - Google Patents

Electrolytic capacitors voltage-sharing discharge circuit of power-supply device with high-power and high voltage bus bar Download PDF

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Publication number
CN201536261U
CN201536261U CN2009201325062U CN200920132506U CN201536261U CN 201536261 U CN201536261 U CN 201536261U CN 2009201325062 U CN2009201325062 U CN 2009201325062U CN 200920132506 U CN200920132506 U CN 200920132506U CN 201536261 U CN201536261 U CN 201536261U
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CN
China
Prior art keywords
power
supply
voltage
circuit
electrochemical capacitor
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Expired - Lifetime
Application number
CN2009201325062U
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Chinese (zh)
Inventor
廖荣辉
夏泉波
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Shenzhen Hopewind Electric Co Ltd
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Shenzhen Hopewind Electric Co Ltd
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Priority to CN2009201325062U priority Critical patent/CN201536261U/en
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Publication of CN201536261U publication Critical patent/CN201536261U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an electrolytic capacitor voltage-sharing discharge circuit of a power-supply device with a high-power and high voltage bus bar, comprising a discharge resistance connected in series on the anode and the cathode of a direct current bus bar of a power-supply device. The discharge resistance comprises a plurality of voltage-sharing resistance arrays which are mutually connected in series and are correspondingly abreast with the electrolytic capacitors, and the amount of the voltage-sharing resistance arrays is equal to the that of the electrolytic capacitors which are mutually connected in series and are abreast at the anode and the cathode of the direct bus bar of the power-supply device with same capacity. Each voltage-sharing resistance array comprises paster resistances connected in series with the same amount and the same resistivity. The circuit of the utility model has small volume, can be directly installed on the copper bar of the electrolytic capacitor with small occupation. The circuit can be applied reliably to the situation with the high voltage and high-power bus bar, and the structure of the power-supply system is simplified. The circuit has simple circuit construction, high reliability and low price, can intuitively show the voltage status of the direct current bus bar and avoid the occurrence of the electric shock accident.

Description

A kind of power-supply device high-power high voltage bus electrochemical capacitor is all pressed the bleed off circuit
Technical field
The utility model relates to a kind of capacitor voltage equalizing bleed off circuit, and particularly a kind of power-supply device high-power high voltage bus electrochemical capacitor is all pressed the bleed off circuit.
Background technology
In power-supply device, adopt electrochemical capacitor in parallel on dc bus usually, the quadergy on the dc bus is carried out energy storage buffer, simultaneously direct voltage or the ripple in the electric current that is present on the dc bus carried out filtering.
The high more requirement of withstand voltage to electrochemical capacitor of the busbar voltage of power-supply device is also high more, at present, the DC bus-bar voltage of a lot of user's power-supply devices has surpassed 1000V, and the voltage endurance capability of big capacity electrochemical capacitor is lower, generally be no more than 450V, therefore, under existing electrochemical capacitor voltage endurance capability condition, the high voltage bus of corresponding power equipment, need be with in parallel with dc bus again after a plurality of electrochemical capacitor series connection, " BUS+ " and " BUS-" two ends of dc bus are arranged side by side again after electrochemical capacitor C1, C2 as shown in Figure 1, the C3 series connection.Because the dc impedance of each electric capacity and leakage current can not be accomplished absolute equating, after plural capacitances in series, the Voltage unbalance that causes each electric capacity can cause damage in the electric capacity life-span, therefore need be at the equal grading resistor of electric capacity two ends difference parallel resistance value.
There is following defective in all pressures bleed off circuit of existing dc bus electrochemical capacitor:
1, present, the grading resistor that is adopted is generally wirewound resistor, cement resistor or metalfilmresistor in the industry, there are shortcomings such as loss is big, heating is severe, price is high, volume is big, need higher cost and bigger installing space, cause the power system structure complexity;
2, in addition, behind the electricity, the bus energy carries out bleed off by grading resistor under the power-supply system, need wait until that busbar voltage drops to after the safe voltage, and the staff could touch detection to power-supply system.The existing power supply system lacks power safety Warning Mark intuitively, causes the accidental shock accident easily.
The utility model content
The technical problems to be solved in the utility model is, provide a kind of power-supply device high-power high voltage bus electrochemical capacitor all to press the bleed off circuit, overcome above-mentioned defective, simplification power system structure that existing grading resistor exists, provide power safety Warning Mark intuitively for power-supply system simultaneously.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of power-supply device high-power high voltage bus electrochemical capacitor and all press the bleed off circuit, comprise and just be connected on this power-supply device dc bus, the bleed off resistance at negative pole two ends, described bleed off resistance comprises mutual series connection, quantity equals after the series connection mutually and just is listed in the power-supply device dc bus, electrochemical capacitor quantity that the capacity at negative pole two ends is identical and the corresponding respectively grading resistor row arranged side by side with described electrochemical capacitor, it is characterized in that described each grading resistor row comprise that quantity is identical, resistance is identical, the Chip-R of mutual series connection.
All press in the bleed off circuit at power-supply device high-power high voltage bus electrochemical capacitor of the present utility model, described electrochemical capacitor quantity is two or more.
All press in the bleed off circuit at power-supply device high-power high voltage bus electrochemical capacitor of the present utility model, described each grading resistor row comprise the light-emitting diode and the current-limiting resistance of mutual series connection, and the light-emitting diode of described series connection and current-limiting resistance are in parallel with any described Chip-R in these grading resistor row; The positive pole of described light-emitting diode connects the hot end of described Chip-R in parallel, the cold end that negative pole connects described Chip-R in parallel.
All press in the bleed off circuit at power-supply device high-power high voltage bus electrochemical capacitor of the present utility model, comprise the PCB circuit board, described grading resistor is connected on the described PCB circuit board.
All press in the bleed off circuit at power-supply device high-power high voltage bus electrochemical capacitor of the present utility model, comprise the PCB circuit board, described grading resistor, light-emitting diode, current-limiting resistance are connected on the described PCB circuit board.
Implement power-supply device high-power high voltage bus electrochemical capacitor of the present utility model and all press the bleed off circuit, compared with the prior art, its beneficial effect is:
This circuit volume little, can be directly installed on the electrochemical capacitor copper bar, it is little to take up room, and can reliably be applied to high-power dc bus occasion, has simplified power system structure;
2. the circuit formation is simple, reliability is high, cheap;
3. can intuitively show the DC bus-bar voltage state, avoid the generation of electric shock accidents.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the electrochemical capacitor series circuit figure at existing power supply equipment dc bus two ends.
Fig. 2 is the circuit diagram that the utility model power-supply device high-power high voltage bus electrochemical capacitor is all pressed a kind of embodiment of bleed off circuit.
Embodiment
As shown in Figure 2, power-supply device high-power high voltage bus electrochemical capacitor of the present utility model is all pressed the bleed off circuit, the bleed off resistance that comprises the dc bus positive and negative electrode two ends that are connected on power-supply device, bleed off resistance comprise that quantity equals the grading resistor row of electrochemical capacitor quantity.
As shown in Figure 1, in the present embodiment, mutually series connection back and the electrochemical capacitor quantity that is listed in anodal BUS+ of power-supply device dc bus and negative pole BUS-two ends are three (C1, C2, C3), and the grading resistor row should be three (100,200,300) mutually.In other embodiments, as required, the quantity of electrochemical capacitor can adopt two or more, and correspondingly, grading resistor is a plurality of after classifying two as.
Each grading resistor row is arranged side by side with corresponding electrochemical capacitor respectively, as shown in Figure 1 and Figure 2, grading resistor row 100 two ends BUS+ end and CENTER1 end are connected in parallel on A, the B two ends of electrochemical capacitor C1, grading resistor row 200 two ends CENTER1 end and CENTER2 end are connected in parallel on B, the C two ends of electrochemical capacitor C2, and grading resistor row 300 two ends CENTER2 end and BUS-end are connected in parallel on C, the D two ends of electrochemical capacitor C3.
Grading resistor row 100 comprise the Chip-R 1 to 8 of mutual series connection, each Chip-R resistance identical (it is identical that the Chip-R of producing according to similar resistance is resistance, the reasonable deviation in not considering to produce).Equally, grading resistor row 200 comprise the Chip-R 9 to 16 of mutual series connection, grading resistor row 300 comprise the Chip-R 17 to 24 of mutual series connection, the Chip-R quantity that each grading resistor row comprises is identical, identical with the resistance that guarantees each grading resistor row, satisfy all pressures effect to capacity identical electrochemical capacitor C1, C2, C3.
Voltage status for display power supply equipment dc bus directly perceived in each grading resistor, is provided with the light-emitting diode and the current-limiting resistance 25 and 26,27 and 28,29 and 30 of mutual series connection respectively.In the present embodiment, the light-emitting diode and the current-limiting resistance 25 of series connection are in parallel with Chip-R 5 with 26 mutually in the grading resistor row 100, the light-emitting diode and the current-limiting resistance 27 of series connection are in parallel with Chip-R 13 with 28 mutually in the grading resistor row 200, and the light-emitting diode and the current-limiting resistance 29 of series connection are in parallel with Chip-R 21 with 30 mutually in the grading resistor row 300.In other embodiments, light-emitting diode that each is connected mutually and current-limiting resistance can be connected in parallel on other any Chip-Rs in its corresponding grading resistor row, and hot end, the negative pole that the positive pole of light-emitting diode 25,27,29 is connected Chip-R in parallel is connected the cold end of Chip-R in parallel.The forward current ability according to light-emitting diode of current-limiting resistance 26,27,30, under the condition that guarantees the light-emitting diode operate as normal, choose.
In other embodiments, light-emitting diode and current-limiting resistance are not set, do not influence the present invention and overcome the realization that prior art takies the basic goal of the invention that installing space is big, cost is expensive, power system structure is complicated.
Installation of all pressing the bleed off circuit of the present utility model for convenience, PCB circuit board (not shown) is set, grading resistor, light-emitting diode and current-limiting resistance be connected on this PCB circuit board (when light-emitting diode and current-limiting resistance are not set, grading resistor be connected on this PCB circuit board).Like this, be convenient to and all press the bleed off circuit to be directly installed on the electrochemical capacitor copper bar.
In other embodiments, the PCB circuit board is not set, does not influence the realization of the object of the invention.

Claims (5)

1. a power-supply device high-power high voltage bus electrochemical capacitor is all pressed the bleed off circuit, comprise the bleed off resistance that is connected on these power-supply device dc bus positive and negative electrode two ends, described bleed off resistance comprises that mutual series connection, quantity equal mutual series connection back and is listed in the identical electrochemical capacitor quantity and the corresponding respectively grading resistor row arranged side by side with described electrochemical capacitor of capacity at power-supply device dc bus positive and negative electrode two ends, it is characterized in that described each grading resistor row comprise that quantity is identical, resistance is identical, the Chip-R of mutual series connection.
2. power-supply device high-power high voltage bus electrochemical capacitor as claimed in claim 1 is all pressed the bleed off circuit, it is characterized in that: described electrochemical capacitor quantity is two or more.
3. power-supply device high-power high voltage bus electrochemical capacitor as claimed in claim 1 or 2 is all pressed the bleed off circuit, it is characterized in that: described each grading resistor row comprise the light-emitting diode and the current-limiting resistance of mutual series connection, and the light-emitting diode of described series connection and current-limiting resistance are in parallel with any described Chip-R in these grading resistor row; The positive pole of described light-emitting diode connects the hot end of described Chip-R in parallel, the cold end that negative pole connects described Chip-R in parallel.
4. power-supply device high-power high voltage bus electrochemical capacitor as claimed in claim 1 or 2 is all pressed the bleed off circuit, it is characterized in that: comprise the PCB circuit board, described grading resistor is connected on the described PCB circuit board.
5. power-supply device high-power high voltage bus electrochemical capacitor as claimed in claim 3 is all pressed the bleed off circuit, it is characterized in that: comprise the PCB circuit board, described grading resistor, light-emitting diode, current-limiting resistance are connected on the described PCB circuit board.
CN2009201325062U 2009-06-02 2009-06-02 Electrolytic capacitors voltage-sharing discharge circuit of power-supply device with high-power and high voltage bus bar Expired - Lifetime CN201536261U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201325062U CN201536261U (en) 2009-06-02 2009-06-02 Electrolytic capacitors voltage-sharing discharge circuit of power-supply device with high-power and high voltage bus bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201325062U CN201536261U (en) 2009-06-02 2009-06-02 Electrolytic capacitors voltage-sharing discharge circuit of power-supply device with high-power and high voltage bus bar

Publications (1)

Publication Number Publication Date
CN201536261U true CN201536261U (en) 2010-07-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036221A (en) * 2012-12-04 2013-04-10 华为技术有限公司 Bus capacitance module and power unit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103036221A (en) * 2012-12-04 2013-04-10 华为技术有限公司 Bus capacitance module and power unit
CN103036221B (en) * 2012-12-04 2015-07-08 华为技术有限公司 Bus capacitance module and power unit

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee
CP02 Change in the address of a patent holder

Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili Town, Dragon Village Second Industrial District 5 Building 5 floor

Patentee after: Shenzhen Hewang Electric Co., Ltd.

Address before: Nanshan District Xili Town, Shenzhen city Guangdong province 518055 new village Wang Tong industrial zone 12 floor North

Patentee before: Shenzhen Hewang Electric Co., Ltd.

C56 Change in the name or address of the patentee

Owner name: SHENZHEN HOPEWIND ELECTRIC CO., LTD.

Free format text: FORMER NAME: SHENZHEN HEWANG ELECTRIC CO., LTD.

CP03 Change of name, title or address

Address after: 518055 Guangdong city of Shenzhen province Nanshan District Xili town village official Liuzhou Industrial Zone No. 5 Building second layer 1-3

Patentee after: Shenzhen's standing grain hopes electric limited company

Address before: 518055 Guangdong city of Shenzhen province Nanshan District Xili Town, Dragon Village Second Industrial District 5 Building 5 floor

Patentee before: Shenzhen Hewang Electric Co., Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20100728