CN201398070Y - Circuit preventing polarity of accumulator from reverse connection - Google Patents

Circuit preventing polarity of accumulator from reverse connection Download PDF

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Publication number
CN201398070Y
CN201398070Y CN2009201381128U CN200920138112U CN201398070Y CN 201398070 Y CN201398070 Y CN 201398070Y CN 2009201381128 U CN2009201381128 U CN 2009201381128U CN 200920138112 U CN200920138112 U CN 200920138112U CN 201398070 Y CN201398070 Y CN 201398070Y
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CN
China
Prior art keywords
polarity
accumulator
circuit
relay
output
Prior art date
Application number
CN2009201381128U
Other languages
Chinese (zh)
Inventor
曾华锋
Original Assignee
厦门拓宝科技有限公司
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Publication date
Application filed by 厦门拓宝科技有限公司 filed Critical 厦门拓宝科技有限公司
Priority to CN2009201381128U priority Critical patent/CN201398070Y/en
Application granted granted Critical
Publication of CN201398070Y publication Critical patent/CN201398070Y/en

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Abstract

The utility model relates to a polarity protecting circuit, in particular to a polarity protecting circuit which is used in a charging system and prevents the polarities of accumulators from reverse connection. The circuit preventing polarity of accumulator from reverse connection comprises a relay, a polarity diode and a photoelectric coupler, wherein the relay is connected in the output end of acharger and the first switch-in end of an accumulator by a control end, the control end thereof is connected on the negative pole of a polarity diode and the output end of a photoelectric coupler, the positive pole of the polarity diode is connected in the first switch-in end of the accumulator and negative pole is connected in the control end of the relay, the positive pole of the output end ofthe photoelectric coupler is connected with the control end of the relay, and the negative pole of the output end of the photoelectric coupler is connected with the second switch-in end of accumulator, and the input end is connected into a power supply conducting circuit of the charger. The polarity protecting circuit adopts the technical solution, which effectively prevents dangers caused by thereverse connection of the polarity of the accumulator in a charging system in one aspect, and prevents the discharging damages of the accumulator caused under the condition of non-alternating-currentpower supply or startup signals in the other aspect.

Description

Prevent the circuit of accumulator polarity reversal connection
Technical field
The utility model relates to polar protective circuit, relates in particular to the polar protective circuit that prevents the accumulator polarity reversal connection that is used for charging system.
Background technology
Storage battery can store direct current energy, in communication, electric power system, usually uses it as power backup equipment, equipment sudden power when avoiding the system power supply fault.For example in the middle of UPS, the batteries that possesses certain charging time is connected on the charger, when civil power is normal after over commutation and inversion powering load, charge a battery by charger simultaneously; Storage battery was just given inverter power supply when civil power broke down, and was converted into AC power and gave load.Therefore storage battery is being born very important role in electric power system.But because it accumulates very big electric power energy, therefore also exist the safety problem of use, manipulate serious accidents such as to occur the short circuit blast accidentally.Therefore the both positive and negative polarity wiring for battery must be correct.Thereby, in equipment, must design prevent the accumulator polarity reversal connection polar protective circuit to avoid taking place security incident.Traditional reverse-connection preventing circuit generally all is to utilize oppositely by characteristic it being gone here and there in the battery link circuit of diode, plays anti-reverse effect; But the protection effect is single, control degree a little less than, connect control with the prime charging device and just can better protect battery if improve circuit, reach the purpose that in good time discharges and recharges.In addition, the polar protective circuit that can adopt electronic switching tube to form is again realized.As publication number is 1355607 patent " circuit with protection to error-polarity connection of power supply ", and it will be protected with field effect transistor and be connected with the substrate of element in the protected circuit.Protection is PMOS field effect transistor or NMOS field effect transistor with field effect transistor.If PMOS, its grid and source electrode are connected the earth terminal and the power end of protected circuit respectively, its drain electrode connects the substrate of PMOS element in protected circuit.If NMOS, its grid and source electrode are connected the power end and the earth terminal of protected circuit respectively, its drain electrode connects the substrate of NMOS element in protected circuit.In case the error-polarity connection of power supply of protected circuit, protection can form with field effect transistor and open circuit, and prevent that electric current from burning the field effect transistor element in the circuit, the protection integrated circuit.And for example publication number is 1832285 patent " NMOS battery reverse connecting protection ", comprises a voltage source, and this voltage source comprises positive and negative end.The polar sensitive device has the first terminal that is connected with the anode of voltage source, and comprises second terminal.Low resistance switches is connected with first and second terminals of voltage source, and is connected with second terminal of polar sensitive device.Low resistance switches is taked conducting state at second voltage that first voltage of voltage source anode deducts the voltage source negative terminal during greater than threshold voltage between the negative terminal of second terminal of polar sensitive device and voltage source.Otherwise low resistance switches is taked nonconducting state.But these circuit adopt electronic switching tube to realize, if being used for the large power, electrically origin system then needs to select for use high-power FET, cost is higher.
The utility model content
In view of this, the utility model proposes a kind of polar protective circuit that prevents the accumulator polarity reversal connection in the charging system, and its cost is not high and the single relatively polarity diode of defencive function is more effective.
The technical solution of the utility model is:
Prevent the circuit of accumulator polarity reversal connection, comprising:
Relay, its controlled terminal are connected to the output of charger and first incoming end of storage battery, and its control end is connected to the negative pole of polarity diode and the output of photoelectrical coupler;
The polarity diode, its anodal first incoming end that inserts storage battery, negative pole is connected to the control end of relay;
Photoelectrical coupler, the positive pole of its output is succeeded the control end of electrical equipment, and the negative pole of output connects second incoming end of storage battery, and its input inserts the power turn-on circuit of charger.
Further, the arbitrary position on the branch road of the output of the control end of first incoming end of described storage battery, polarity diode, relay, photoelectrical coupler formation is connected in series a current-limiting resistance.
Further, described current-limiting resistance inserts between the positive pole of the output of the control end of relay and photoelectrical coupler.
Further, the input of described photoelectrical coupler also is connected in series a current-limiting resistance.
Preferably, relay described in the utility model is an electromagnetic relay.
The utility model adopts as above technical scheme, has effectively avoided on the one hand the danger that causes because of the accumulator polarity reversal connection in charging system, has avoided under AC-less power or starting-up signal situation the discharge loss to storage battery on the other hand.
Description of drawings
That shown in Figure 1 is uninterrupted power supply (ups) Unity typical circuit figure;
Shown in Figure 2 is circuit diagram of the present utility model.
Embodiment
Now with embodiment the utility model is further specified in conjunction with the accompanying drawings.
Consulting shown in Figure 1 is the uninterrupted power supply (ups) Unity typical circuit figure of ac converter.In the time of at ordinary times AC electricity through the AC/DC rectification after by charger to charge in batteries, in case when outage takes place, then carry out the output of AC electricity again through inverter by storage battery.
Consult shown in Figure 2, the circuit that prevents the accumulator polarity reversal connection of the present utility model, comprise: relay D3, its controlled terminal are connected to the output of charger and the first incoming end BAT+ of storage battery BAT1, and its control end is connected to the negative pole of polarity diode D2 and the output of photoelectrical coupler D1; Polarity diode D2, its anodal first incoming end BAT+ that inserts storage battery BAT1, negative pole is connected to the control end of relay D3;
Photoelectrical coupler D1, the positive pole of its output is succeeded the control end of electrical equipment D3, and the negative pole of output meets the second incoming end BAT-of storage battery BAT1, and its input inserts the power turn-on circuit of charger.Can take from the signal end in the circuit of charger with voltage output.
Further, the arbitrary position on the branch road of the output of the control end of the first incoming end BAT+ of described storage battery BAT1, polarity diode D2, relay D3, photoelectrical coupler D1 formation is connected in series a current-limiting resistance R3.Among the embodiment of the present utility model, described current-limiting resistance R3 inserts between the positive pole of the output of the control end of relay D3 and photoelectrical coupler D1.
Same, the input of described photoelectrical coupler D1 also is connected in series a current-limiting resistance R4 and is used for current limliting.
Preferably, relay D3 described in the utility model is an electromagnetic relay.Described control end is the two ends of coil, and described controlled terminal is the switch terminals that moving contact end (Chang Kaiduan), fixed contact end (normal-closed end) and common port constitute.
Like this, the link circuit of storage battery BAT1 and charger is subjected to the control of the control end voltage of relay D3.Have only the subsidiary loop conducting, relay D3 could be closed, and charger could accumulators BAT1 charging.That is, the positive pole of the storage battery BAT1 negative pole that inserts the first incoming end BAT+, storage battery BAT1 insert the second incoming end BAT-could the conducting charger and being connected of storage battery BAT1.But, if storage battery BAT1 terminal polarity connects instead, then not conducting of diode D2, the subsidiary loop of relay D 3 does not have electric current to flow through, and relay D3 can not be closed, and charger can't be input to the storage battery end.On the other hand, errorless even the polarity of storage battery BAT1 connects, if charger does not exchange output or do not have switching signal, optocoupler D1 does not work, and the loop can not conducting, and relay D3 is still not closed; Avoided under AC-less power or starting-up signal situation discharge loss to storage battery BAT1.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; in the spirit and scope of the present utility model that do not break away from appended claims and limited; can make various variations to the utility model in the form and details, be protection range of the present utility model.

Claims (5)

1. prevent the circuit of accumulator polarity reversal connection, it is characterized in that: comprise
Relay (D3), its controlled terminal are connected to the output of charger and first incoming end (BAT+) of storage battery (BAT1), and its control end is connected to the negative pole of polarity diode (D2) and the output of photoelectrical coupler (D1); Polarity diode (D2), its anodal first incoming end (BAT+) that inserts storage battery (BAT1), negative pole is connected to the control end of relay (D3);
Photoelectrical coupler (D1), the positive pole of its output is succeeded the control end of electrical equipment (D3), and the negative pole of output connects second incoming end (BAT-) of storage battery (BAT1), and its input inserts the power turn-on circuit of charger.
2. the circuit that prevents the accumulator polarity reversal connection according to claim 1 is characterized in that: the arbitrary position on the branch road that the control end of first incoming end (BAT+) of described storage battery (BAT1), polarity diode (D2), relay (D3), the output of photoelectrical coupler (D1) constitute is connected in series a current-limiting resistance (R3).
3. the circuit that prevents the accumulator polarity reversal connection according to claim 2 is characterized in that: described current-limiting resistance (R3) inserts between the positive pole of the output of the control end of relay (D3) and photoelectrical coupler (D1).
4. the circuit that prevents the accumulator polarity reversal connection according to claim 1 is characterized in that: the input of described photoelectrical coupler (D1) also is connected in series a current-limiting resistance (R4).
5. the circuit that prevents the accumulator polarity reversal connection according to claim 1 is characterized in that: described relay (D3) is an electromagnetic relay.
CN2009201381128U 2009-05-06 2009-05-06 Circuit preventing polarity of accumulator from reverse connection CN201398070Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009201381128U CN201398070Y (en) 2009-05-06 2009-05-06 Circuit preventing polarity of accumulator from reverse connection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009201381128U CN201398070Y (en) 2009-05-06 2009-05-06 Circuit preventing polarity of accumulator from reverse connection

Publications (1)

Publication Number Publication Date
CN201398070Y true CN201398070Y (en) 2010-02-03

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794985A (en) * 2010-03-17 2010-08-04 杭州中恒电气股份有限公司 High-voltage direct-current (HVDC) system battery charging protecting circuit structure
CN102005808A (en) * 2010-11-02 2011-04-06 徐州上若科技有限公司 Backup power source for coal mine electronic device
CN102756655A (en) * 2012-07-11 2012-10-31 合肥华耀电子工业有限公司 Novel input reverse-connection-preventing circuit
CN104617562A (en) * 2015-02-16 2015-05-13 中国北方车辆研究所 Vehicle inverted connection proof device
CN104810803A (en) * 2015-05-15 2015-07-29 成都英格瑞德电气有限公司 Battery reversal preventing circuit for modularized inverter
CN103633675B (en) * 2012-08-23 2015-08-19 青岛紫光软件系统有限公司 Battery charger polarity Adaptable System
CN105515072A (en) * 2014-09-22 2016-04-20 中兴通讯股份有限公司 Communication power supply battery anti-reverse-connection circuit and communication power supply control system
CN106787058A (en) * 2017-01-13 2017-05-31 中惠创智无线供电技术有限公司 A kind of reception terminal protecting circuit and charging equipment charged for battery

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101794985A (en) * 2010-03-17 2010-08-04 杭州中恒电气股份有限公司 High-voltage direct-current (HVDC) system battery charging protecting circuit structure
CN101794985B (en) * 2010-03-17 2012-06-13 杭州中恒电气股份有限公司 High-voltage direct-current (HVDC) system battery charging protecting circuit structure
CN102005808A (en) * 2010-11-02 2011-04-06 徐州上若科技有限公司 Backup power source for coal mine electronic device
CN102756655A (en) * 2012-07-11 2012-10-31 合肥华耀电子工业有限公司 Novel input reverse-connection-preventing circuit
CN103633675B (en) * 2012-08-23 2015-08-19 青岛紫光软件系统有限公司 Battery charger polarity Adaptable System
CN105515072A (en) * 2014-09-22 2016-04-20 中兴通讯股份有限公司 Communication power supply battery anti-reverse-connection circuit and communication power supply control system
CN104617562A (en) * 2015-02-16 2015-05-13 中国北方车辆研究所 Vehicle inverted connection proof device
CN104617562B (en) * 2015-02-16 2018-07-20 中国北方车辆研究所 A kind of automobile-used counnter attack connection device
CN104810803A (en) * 2015-05-15 2015-07-29 成都英格瑞德电气有限公司 Battery reversal preventing circuit for modularized inverter
CN106787058A (en) * 2017-01-13 2017-05-31 中惠创智无线供电技术有限公司 A kind of reception terminal protecting circuit and charging equipment charged for battery

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GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100203

Termination date: 20110506