CN203086192U - Overvoltage/undervoltage protective device for storage battery pack of transformer station - Google Patents
Overvoltage/undervoltage protective device for storage battery pack of transformer station Download PDFInfo
- Publication number
- CN203086192U CN203086192U CN 201320012359 CN201320012359U CN203086192U CN 203086192 U CN203086192 U CN 203086192U CN 201320012359 CN201320012359 CN 201320012359 CN 201320012359 U CN201320012359 U CN 201320012359U CN 203086192 U CN203086192 U CN 203086192U
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- Prior art keywords
- overvoltage
- operational amplifier
- storage battery
- batteries
- battery pack
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to an overvoltage/undervoltage protective device for a storage battery pack of a transformer station, which comprises a sampling circuit, a voltage comparator and an alarm circuit. The sampling circuit is composed of resistors R1, R2 and R3 and a capacitor C1; the voltage comparator is composed of operational amplifiers A1 and A2, wherein the operational amplifier A1 is used for overvoltage detection, and the operational amplifier A2 is used for undervoltage detection, the output end of the operational amplifier A1 is connected with a composite triode V1 via an optical coupler O1, and the output end of the operational amplifier A2 is connected with a composite triode V2 via an optical couple O2; and a relay KM is switched on/off to control a buzzer SP and light-emitting diodes LED1, LED2, LED3, LED4, LED5 and LED6. The overvoltage/undervoltage protective device for the storage battery pack of the transformer station can detect the voltage of the storage battery pack at anytime, and carry out alarming after the moment overvoltage or undervoltage occurs in the storage battery pack, so that staff on duty can take measures timely, or overvoltage/undervotlage signals are back fed to a PLC (Programmable Logic Controller) control unit to adjust charging state of a charger; thus, charging of batteries is maintained in the best state.
Description
Technical field
The utility model relates to a kind of accumulator protecting device, particularly a kind of transformer station batteries overvoltage/undervoltage protective device.
Background technology
The batteries that transformer station direct current system is used is 18 joints, and every batteries is 12V/65-100AH, when being full of electricity, and about 13.7V.Charger (switch power module) should detect its mistake, undervoltage condition at any time in the battery charging process, can not overcharge, and can not owe to fill, otherwise storage battery will influence useful life because of leakage or plate vulcanizing.
Summary of the invention
The purpose of this utility model is exactly the above-mentioned defective that exists at prior art, and a kind of transformer station batteries overvoltage/undervoltage protective device is provided, and can detect its voltage, and storage battery is crossed, in time report to the police in under-voltage back.
Its technical scheme is: comprise sample circuit, voltage comparator and warning circuit, described sample circuit is formed the batteries sample circuit by resistance R 1-R3 and capacitor C 1, and the batteries parallel connection, potentiometer RW1, RW2 are used to adjust that storage battery is crossed, under-voltage definite value; Operational amplifier A 1 and A2 form voltage comparator, and operational amplifier A 1 is used for overvoltage and detects, and operational amplifier A 2 is used for under-voltage detection; The output of operational amplifier A 1 and A2 is connected compound transistor V1 and V2 by optocoupler O1 respectively with O2, by switch control news Chinese percussion instrument SP and the LED 1-LED6 of relay K M.
Be provided with dropping resistor R7 and light-emitting diode between the output of above-mentioned operational amplifier and the optocoupler.
Above-mentioned operational amplifier adopts LM358 series operational amplifier.
The beneficial effects of the utility model are: can detect its voltage at any time, storage battery is crossed, in time report to the police in under-voltage back, the operator on duty is in time taken measures, perhaps mistake, under-voltage signal feedback are arrived the PLC control unit, charged state to charger is adjusted, so that the charging of battery remains on optimum state.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model;
Among the last figure: closing bus bar+HM ,-HM, batteries E1-En, operational amplifier A 1, A2, resistance R 1-R15 and capacitor C 1, potentiometer RW1, RW2, optocoupler O1, O2, LED, LED1, LED2, compound transistor V1-V6, relay K M, news Chinese percussion instrument SP, Programmable Logic Controller PLC input DI1, DI2.
Embodiment
In conjunction with the accompanying drawings 1, the utility model will be further described:
The utility model comprises sample circuit, voltage comparator and warning circuit, and described sample circuit is formed the batteries sample circuit by resistance R 1-R3 and capacitor C 1, and the batteries parallel connection, and potentiometer RW1, RW2 are used to adjust that storage battery is crossed, under-voltage definite value; Operational amplifier A 1 and A2 form voltage comparator, and operational amplifier A 1 is used for overvoltage and detects, and operational amplifier A 2 is used for under-voltage detection; The output of operational amplifier A 1 and A2 is connected compound transistor V1 and V2 by optocoupler O1 respectively with O2, by switch control news Chinese percussion instrument SP and the LED 1-LED6 of relay K M.
Wherein ,+HM ,-HM is the closing bus bar of transformer station direct current system, E1-En is 18 joint batteries, form voltage comparator by operational amplifier A 1, A2, A1 is used for overvoltage and detects, and A2 is used for under-voltage detection, wherein, operational amplifier adopts LM358 series operational amplifier.Resistance R 1, R2, R3 and C1 form the batteries sample circuit, they and batteries parallel connection, and potentiometer RW1, RW2 are used to adjust that storage battery is crossed, under-voltage definite value.The overvoltage definite value is set at 250V in this circuit, and under-voltage definite value is set at 220V.Dividing potential drop on the sample resistance R3 is added to in-phase end 3 pin of overvoltage comparator A1 and end of oppisite phase 6 pin of under-voltage comparator A2 simultaneously.When the batteries both end voltage is higher than 250V (standard 245V), A1 in-phase end 3 pin level are higher than end of oppisite phase 2 pin, 1 pin output high level, and through R7 step-down current limliting, optocoupler O1 conducting.Produce three results after the optocoupler O1 conducting: first, red light emitting diodes LED1 is bright, pilot cell group overvoltage, start the compound transistor formed by V1, V2 simultaneously also because of base stage bias current conducting is arranged, relay K M1 gets the electronic adhesive of doing, its a pair of normal opened contact KM1-1 closure is connected the photon board on " accident signal screen ", indication " batteries overvoltage "; The second, another is also closed simultaneously to normal opened contact KM1-2, connects 24V news Chinese percussion instrument, sends alarm sound, and prompting the operator on duty in time take measures; The 3rd, after the optocoupler O1 conducting, its inner phototriode presents low-resistance, + 24V voltage is added on the Programmable Logic Controller PLC input DI1 by O1, by PLC control, on touch screen human-computer interface, send warning message, show " battery pack overvoltage " alarm logging.Meanwhile, the PLC control storage battery master road of charging stops and transferring floating charge to.In like manner, when accumulator battery voltage was lower than 220V, the 6 pin level of A2 were lower than 5 pin, 7 pin output high level, optocoupler O2 conducting is after the optocoupler O2 conducting, similar over voltage alarm process also has three results: the first, and green luminotron LED2 is bright, the pilot cell group is under-voltage, the also conducting of forming by V4, V5 of compound transistor simultaneously, relay K M2 gets electric adhesive, a pair of normal opened contact KM2-1 closure, connect the photon board, show " batteries is under-voltage " the bright information of reporting to the police; The second, another of relay is also closed simultaneously to normal opened contact KM2-2, connects the news Chinese percussion instrument, sends alarm sound information, and prompting the operator on duty note; The 3rd, after the optocoupler O2 conducting ,+24V voltage is added on another input port of PLC DI2, sends " batteries under voltage " information on man-machine interface equally.The battery pack of PLC control meanwhile transfers main filling to by floating charge.By such control, make the voltage of batteries keep optimum state constantly.In case PLC control has problem, because audible alarm and particular content indication are arranged, the operator on duty can in time take emergency processing as the case may be.
Claims (3)
1. transformer station's batteries overvoltage/undervoltage protective device, it is characterized in that: comprise sample circuit, voltage comparator and warning circuit, described sample circuit is formed the batteries sample circuit by resistance R 1, resistance R 2, resistance R 3 and capacitor C 1, and the batteries parallel connection, potentiometer RW1, RW2 are used to adjust that storage battery is crossed, under-voltage definite value; Operational amplifier A 1 and A2 form voltage comparator, and operational amplifier A 1 is used for overvoltage and detects, and operational amplifier A 2 is used for under-voltage detection; The output of operational amplifier A 1 and A2 is connected compound transistor V1 and V2 by optocoupler O1 respectively with O2, by switch control news Chinese percussion instrument SP and the LED 1-LED6 of relay K M.
2. transformer station according to claim 1 batteries overvoltage/undervoltage protective device is characterized in that: be provided with dropping resistor R7 and LED 1 between the output of described operational amplifier A 1 and the optocoupler.
3. transformer station according to claim 1 batteries overvoltage/undervoltage protective device is characterized in that: described operational amplifier adopts LM358 series operational amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320012359 CN203086192U (en) | 2013-01-10 | 2013-01-10 | Overvoltage/undervoltage protective device for storage battery pack of transformer station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320012359 CN203086192U (en) | 2013-01-10 | 2013-01-10 | Overvoltage/undervoltage protective device for storage battery pack of transformer station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203086192U true CN203086192U (en) | 2013-07-24 |
Family
ID=48831997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320012359 Expired - Fee Related CN203086192U (en) | 2013-01-10 | 2013-01-10 | Overvoltage/undervoltage protective device for storage battery pack of transformer station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203086192U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880671A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Anaesthesia machine accumulator detection apparatus |
| CN106671819A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Monitoring device for battery equilibrium performance of vehicle with double battery packs |
| CN109149714A (en) * | 2018-09-26 | 2019-01-04 | 河南森源鸿马电动汽车有限公司 | A kind of charging controller device and method |
-
2013
- 2013-01-10 CN CN 201320012359 patent/CN203086192U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104880671A (en) * | 2014-02-28 | 2015-09-02 | 北京谊安医疗系统股份有限公司 | Anaesthesia machine accumulator detection apparatus |
| CN104880671B (en) * | 2014-02-28 | 2019-04-26 | 北京谊安医疗系统股份有限公司 | The detection device of Anesthesia machine battery |
| CN106671819A (en) * | 2017-03-02 | 2017-05-17 | 南京交通职业技术学院 | Monitoring device for battery equilibrium performance of vehicle with double battery packs |
| CN109149714A (en) * | 2018-09-26 | 2019-01-04 | 河南森源鸿马电动汽车有限公司 | A kind of charging controller device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130724 Termination date: 20140110 |