CN205429707U - Little consumption wide region battery under voltage warning circuit - Google Patents
Little consumption wide region battery under voltage warning circuit Download PDFInfo
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- CN205429707U CN205429707U CN201620256373.XU CN201620256373U CN205429707U CN 205429707 U CN205429707 U CN 205429707U CN 201620256373 U CN201620256373 U CN 201620256373U CN 205429707 U CN205429707 U CN 205429707U
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Abstract
The utility model provides a little consumption wide region battery under voltage warning circuit, belongs to the battery under voltage alarm technique field. Which comprises a power supply module, voltage comparing module and signal isolation module, power module and voltage comparing module connect the positive terminal of battery jointly, voltage comparing module and signal isolation module connect the negative pole end of battery jointly, power module is connected with voltage comparing module and signal isolation module respectively, provide the power for voltage comparing module and signal isolation module, voltage comparing module connects signal isolation module, voltage comparing module monitors battery voltage, alarm output signal when the loss of voltage arrives the warning threshold value, the open -collector output after keeping apart alarm signal, signal isolation module carries out. The advantage: the low power dissipation can be guaranteed the long -term all -weather monitoring of battery, the monitoring voltage scope is wide, can be applicable to any battery powered occasion that directly adopts, alarm signal keeps apart output, under the condition of the power of the multiple mutual isolation of needs, does benefit to the unified management to the battery.
Description
Technical field
This utility model belongs to battery undervoltage alarm technique field, is specifically related to a kind of Micro Energy Lose width scope battery undervoltage warning circuit.
Background technology
The occasion can not directly powered by AC network at oceanographic buoy, undersea detection, field work, electric bicycle, electric automobile etc. at present, the application of battery (once, secondary) is more and more extensive.The battery that producer provides the most all had been taked to put (under-voltage) protective measure, and when cell voltage is reduced to a certain threshold value, circuit automatically cuts off power supply, realizes the protection to battery with this.But, considering from user perspective, user wishes that can obtain one before circuitry cuts shifts to an earlier date warning signal, so as to takes some Forewarning Measures, is used for protecting electrical equipment.
Prior art occurs a lot of corresponding design; such as; " method and apparatus of a kind of battery under-voltage protection " that Chinese invention patent Authorization Notice No. CN100454711C introduces; " Undervoltage protection circuit for battery " that Chinese utility model patent Authorization Notice No. CN2794005Y mentions; " the battery undervoltage detection warning protection circuit " that Chinese utility model patent Authorization Notice No. CN201975750U recommends; but, above-mentioned patent there are common defect: warning circuit power consumption is bigger；Do not account between signal is mutually isolated.
In view of above-mentioned prior art, the applicant has made useful design, and technical scheme described below produces under this background.
Summary of the invention
The purpose of this utility model is to provide a kind of Micro Energy Lose width scope battery undervoltage warning circuit with alarm signal isolation features.
The purpose of this utility model is such to reach, a kind of Micro Energy Lose width scope battery undervoltage warning circuit, it is characterized in that: include power module, voltage comparison module and signal isolation module, described power module and voltage comparison module connect the positive terminal of battery jointly, described voltage comparison module and signal isolation module connect the negative pole end of battery jointly, power module is connected with voltage comparison module and signal isolation module respectively, power supply is provided for voltage comparison module and signal isolation module, voltage comparison module connects signal isolation module, voltage comparison module monitoring cell voltage, the output alarm signal when voltage is reduced to alarm door threshold value, signal isolation module carries out open collector output after alarm signal being isolated.
nullIn a specific embodiment of the present utility model，Described power module includes regulated power supply chip U1、First electric capacity C1、Second electric capacity C2、First resistance R1 and the first rheostat W1，Described regulated power supply chip U1 uses LT3014，The 1 of regulated power supply chip U1、One end of 2 feet and the first electric capacity C1 connects the positive terminal of described battery jointly，4 feet of regulated power supply chip U1 and one end of the first rheostat W1、One end of sliding end and the first resistance R1 connects，The other end of the first rheostat W1 is connected with 5 feet of regulated power supply chip U1 and one end of the second electric capacity C2，And constitute power output end and be connected to described voltage comparison module and signal isolation module，The other end of the first electric capacity C1、3 feet of regulated power supply chip U1、The other end of the first resistance R1 and the other end common ground of the second electric capacity C2.
In another specific embodiment of the present utility model, described voltage comparison module includes open-drain comparator A1, second resistance R2 and the second rheostat W2, described open-drain comparator A1 uses TLV3011, 3 feet of open-drain comparator A1 and one end of the second rheostat W2, one end of sliding end and the second resistance R2 connects, the positive terminal of the battery described in other end connection of the second rheostat W2, 4 feet of open-drain comparator A1 and 5 feet connect, the power module described in 6 feet connections of open-drain comparator A1, the signal isolation module described in 1 foot connection of open-drain comparator A1, 2 feet of open-drain comparator A1 and the other end common ground of the second resistance R2.
In another specific embodiment of the present utility model, described signal isolation module includes optocoupler N1, the 3rd resistance R3 and the 4th resistance R4, described optocoupler N1 uses HCPL-4701,2 feet of optocoupler N1 connect one end of the 3rd resistance R3, the power module described in other end connection of the 3rd resistance R3, the voltage comparison module described in 3 feet connections of optocoupler N1,8 feet of optocoupler N1 and one end of the 4th resistance R4 connect DC source Vcc jointly, 6 feet of optocoupler N1 and the other end of the 4th resistance R4 connect, and the 5 foot ground connection of common output alarm signal Vo, optocoupler N1..
This utility model is owing to have employed said structure, compared with prior art, has the beneficial effect that low in energy consumption, and each module uses micropower circuit, and total power consumption controls in microwatt level, both can guarantee that the round-the-clock monitoring long-term to battery, and will not consume again excessive power；Monitoring voltage wide ranges, can be suitably used for any battery powered occasion of direct employing；Alarm signal isolation and amplifier, in the case of needing multiple mutually isolated power supply, is beneficial to the unified management to battery.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Fig. 2 is the electrical connection schematic diagram of this utility model one embodiment.
Fig. 3 is the electrical connection schematic diagram of this utility model one application examples.
Detailed description of the invention
Detailed description of the invention of the present utility model is described in detail by applicant by combining accompanying drawing below; but applicant is not the restriction to technical scheme to the description of embodiment, any changing in the form rather than substance according to this utility model design all should be considered as protection domain of the present utility model.
Referring to Fig. 1, this utility model relates to a kind of Micro Energy Lose width scope battery undervoltage warning circuit, including power module, voltage comparison module and signal isolation module.Described power module and voltage comparison module jointly connect the positive terminal of battery, described voltage comparison module and signal isolation module and jointly connect the negative pole end of battery.Power module is connected with voltage comparison module and signal isolation module respectively, provides power supply for voltage comparison module and signal isolation module.Voltage comparison module connects signal isolation module, and voltage comparison module monitoring cell voltage, the output alarm signal when voltage is reduced to alarm door threshold value, signal isolation module carries out open collector output after alarm signal being isolated.
Refer to Fig. 2, described power module includes that regulated power supply chip U1, the first electric capacity C1, the second electric capacity C2, the first resistance R1 and the first rheostat W1, described the first electric capacity C1, the second electric capacity C2 select the tantalum electric capacity or multi-layer ceramic capacitance that equivalent resistance is little.Described regulated power supply chip U1 uses LT3014, is the linear stabilized power supply of a Micro Energy Lose low voltage difference, and the input voltage range of this chip is 3V～80V, the minimum 7uA of quiescent current, and output electric current is up to 20mA, and output voltage is adjustable in the range of 1.22V～60V.1,2 feet of regulated power supply chip U1 and one end of the first electric capacity C1 connect the positive terminal of described battery, the negative pole end ground connection of battery jointly.One end of 4 feet of regulated power supply chip U1 and one end of the first rheostat W1, sliding end and the first resistance R1 connects, the other end of the first rheostat W1 is connected with 5 feet of regulated power supply chip U1 and one end of the second electric capacity C2, and constitute power output end and be connected to described voltage comparison module and signal isolation module, provide power supply for voltage comparison module and signal isolation module.Power module regulates output voltage by the first rheostat W1, in the present embodiment, output voltage is set to 3.3V.Power module turns off by being set low by 2 feet of regulated power supply chip U1, and now consuming electric current is 1uA.
Described voltage comparison module includes open-drain comparator A1, the second resistance R2 and the second rheostat W2.Described open-drain comparator A1 uses TLV3011, and for the open-drain comparator of band built-in reference voltage, power consumption is extremely low, and maximum static current only has 5uA, and supply voltage is 1.8V～5.5V.One end of 3 feet of open-drain comparator A1 and one end of the second rheostat W2, sliding end and the second resistance R2 connects, the positive terminal of the battery described in other end connection of the second rheostat W2,4 feet of open-drain comparator A1 and 5 feet connect, the power module described in 6 feet connections of open-drain comparator A1, the signal isolation module described in 1 foot connection of open-drain comparator A1.Regulate the second resistance R2 and the second rheostat W2, threshold voltage can be set.For reducing power consumption, in the present embodiment, the second resistance R2 and the second rheostat W2 all-in resistance can be taken as 100M Ω.The monitoring voltage wide ranges of described voltage comparison module, can be monitored the voltage in 3V～80V.
Described signal isolation module includes optocoupler N1, the 3rd resistance R3 and the 4th resistance R4.Described optocoupler N1 uses HCPL-4701, for having the optocoupler of super low-power consumption.The input of optocoupler N1 drives electric current little to 40uA, and outfan supply voltage provides more motility up to 18V, the subsequent treatment for signal.2 feet of optocoupler N1 connect one end of the 3rd resistance R3, the power module described in other end connection of the 3rd resistance R3, the voltage comparison module described in 3 feet connections of optocoupler N1,8 feet of optocoupler N1 and one end of the 4th resistance R4 connect DC source Vcc jointly, 6 feet of optocoupler N1 and the other end of the 4th resistance R4 connect, and common output alarm signal Vo.When reality is applied, alarm signal Vo can be used for driving buzzer, display lamp and relay etc. to complete instruction of reporting to the police, and the electric current needed for driving is provided by DC source Vcc, and the big I of DC source Vcc selects according to practical situation.This utility model is owing to adding signal isolation module so that the battery that monitoring multichannel is mutually isolated simultaneously is possibly realized.Assume in a more complicated system, such as oceanographic buoy etc., need mutually isolated owing to the battery variety of application more, but need again the technical scheme that just can use the present embodiment during battery Centralized Monitoring simultaneously.
Please continue to refer to Fig. 2, the voltage assuming a battery is 24V, and power module output voltage is 3.3V, feeds back all-in resistance W1+R1=6M Ω, sampling all-in resistance W2+R2=100M Ω, the estimation of the power consumption of Micro Energy Lose width scope battery undervoltage warning circuit the most described in the utility model is as follows:
When normal battery operation, open-drain comparator A1 exports high level, and optocoupler N1 is not turned on, and now power source loads electric current is the quiescent current 5uA of open-drain comparator A1, power supply supply current is 30uA (seeing LT3014 service manual) to the maximum, then
Power module power consumption: P1=(24-3.3) V*5uA+24V*30uA=843.5uW,
Feedback circuit power consumption: P2=(3.3V)2/ 6M Ω=1.82uW,
The power consumption of open-drain comparator A1: P3=3.3V*5uA=16.5uW,
The input circuit power consumption of open-drain comparator A1: P4=(24V)2/ 100M Ω=5.76uW,
General power P=P1+P2+P3+P4=868uW that circuit consumes,
In summary, when normal battery operation, secondary power consumption produced by Micro Energy Lose width scope battery undervoltage warning circuit is less than 1mW, and circuit total power consumption controls in microwatt level, can guarantee that and battery carries out long-term round-the-clock monitoring.When battery undervoltage, open-drain comparator A1 output low level, optocoupler N1 turns on, now consumes the electric current of tens uA.
Refer to Fig. 3, illustrate an application examples of the present utility model.Should be in use-case, owing to simply monitoring single battery, therefore alarm signal be without isolation and amplifier, and now DC source Vcc is without external, can directly be provided by regulated power supply chip U1.Specifically, 2 feet of optocoupler N1 connect one end of the 3rd resistance R3, one end of the other end of the 3rd resistance R3,8 feet of optocoupler N1 and the 4th resistance R4 connects described power module jointly, the voltage comparison module described in 3 feet connections of optocoupler N1,6 feet of optocoupler N1 and the other end of the 4th resistance R4 connect, and ground connection after the 5 foot ground connection of common output alarm signal Vo, optocoupler N1 or series connection one under-voltage display lamp.
Claims (4)
1. a Micro Energy Lose width scope battery undervoltage warning circuit, it is characterized in that: include power module, voltage comparison module and signal isolation module, described power module and voltage comparison module connect the positive terminal of battery jointly, described voltage comparison module and signal isolation module connect the negative pole end of battery jointly, power module is connected with voltage comparison module and signal isolation module respectively, power supply is provided for voltage comparison module and signal isolation module, voltage comparison module connects signal isolation module, voltage comparison module monitoring cell voltage, the output alarm signal when voltage is reduced to alarm door threshold value, signal isolation module carries out open collector output after alarm signal being isolated.
nullA kind of Micro Energy Lose width scope battery undervoltage warning circuit the most according to claim 1，It is characterized in that described power module includes regulated power supply chip U1、First electric capacity C1、Second electric capacity C2、First resistance R1 and the first rheostat W1，Described regulated power supply chip U1 uses LT3014，The 1 of regulated power supply chip U1、One end of 2 feet and the first electric capacity C1 connects the positive terminal of described battery jointly，4 feet of regulated power supply chip U1 and one end of the first rheostat W1、One end of sliding end and the first resistance R1 connects，The other end of the first rheostat W1 is connected with 5 feet of regulated power supply chip U1 and one end of the second electric capacity C2，And constitute power output end and be connected to described voltage comparison module and signal isolation module，The other end of the first electric capacity C1、3 feet of regulated power supply chip U1、The other end of the first resistance R1 and the other end common ground of the second electric capacity C2.
A kind of Micro Energy Lose width scope battery undervoltage warning circuit the most according to claim 1, it is characterized in that described voltage comparison module includes open-drain comparator A1, second resistance R2 and the second rheostat W2, described open-drain comparator A1 uses TLV3011, 3 feet of open-drain comparator A1 and one end of the second rheostat W2, one end of sliding end and the second resistance R2 connects, the positive terminal of the battery described in other end connection of the second rheostat W2, 4 feet of open-drain comparator A1 and 5 feet connect, the power module described in 6 feet connections of open-drain comparator A1, the signal isolation module described in 1 foot connection of open-drain comparator A1, 2 feet of open-drain comparator A1 and the other end common ground of the second resistance R2.
A kind of Micro Energy Lose width scope battery undervoltage warning circuit the most according to claim 1, it is characterized in that described signal isolation module includes optocoupler N1, 3rd resistance R3 and the 4th resistance R4, described optocoupler N1 uses HCPL-4701, 2 feet of optocoupler N1 connect one end of the 3rd resistance R3, the power module described in other end connection of the 3rd resistance R3, the voltage comparison module described in 3 feet connections of optocoupler N1, 8 feet of optocoupler N1 and one end of the 4th resistance R4 connect DC source Vcc jointly, 6 feet of optocoupler N1 and the other end of the 4th resistance R4 connect, and common output alarm signal Vo, the 5 foot ground connection of optocoupler N1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620256373.XU CN205429707U (en) | 2016-03-30 | 2016-03-30 | Little consumption wide region battery under voltage warning circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620256373.XU CN205429707U (en) | 2016-03-30 | 2016-03-30 | Little consumption wide region battery under voltage warning circuit |
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| CN205429707U true CN205429707U (en) | 2016-08-03 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353890A (en) * | 2021-12-08 | 2022-04-15 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN115331968A (en) * | 2022-10-13 | 2022-11-11 | 深圳市今朝时代股份有限公司 | A super capacitor module for high-efficient start-up car |
-
2016
- 2016-03-30 CN CN201620256373.XU patent/CN205429707U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114353890A (en) * | 2021-12-08 | 2022-04-15 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN114353890B (en) * | 2021-12-08 | 2022-12-13 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN115331968A (en) * | 2022-10-13 | 2022-11-11 | 深圳市今朝时代股份有限公司 | A super capacitor module for high-efficient start-up car |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20200330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |