CN104849663A - Circuit for detecting battery level - Google Patents

Circuit for detecting battery level Download PDF

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Publication number
CN104849663A
CN104849663A CN201410052334.3A CN201410052334A CN104849663A CN 104849663 A CN104849663 A CN 104849663A CN 201410052334 A CN201410052334 A CN 201410052334A CN 104849663 A CN104849663 A CN 104849663A
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CN
China
Prior art keywords
battery
comparison module
circuit
connects
display module
Prior art date
Application number
CN201410052334.3A
Other languages
Chinese (zh)
Inventor
岳景睿
Original Assignee
岳景睿
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 岳景睿 filed Critical 岳景睿
Priority to CN201410052334.3A priority Critical patent/CN104849663A/en
Publication of CN104849663A publication Critical patent/CN104849663A/en

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Abstract

The invention discloses a circuit for detecting the battery level, and the circuit comprises an additional battery, a comparison module, a display module, a reference generation circuit, a battery clamping device, and a to-be-detected battery. The positive end of the to-be-detected battery is connected to the inverted input end of the comparison module, the negative end of the additional battery, and the positive end of the battery clamping device. The negative end of the to-be-detected battery is connected with the negative end of the comparison module and the negative end of the battery clamping device. The negative end of the additional battery is connected with the power positive end of the comparison module. The power positive end of the display module is connected with the positive end of the additional battery, and the output end of the comparison module is connected with the input end of the display module. The reference generation circuit employs the additional battery and the to-be-detected battery to achieve combined power supply and to generate a reference voltage needed by the comparison module, wherein the reference voltage is supplied to the in-phase input end of the comparison module. The battery level is detected through an electronic circuit, and a light-emitting diode is employed for displaying the battery level. The circuit is low in cost, and is convenient to use.

Description

A kind of battery power detection circuit
Technical field
The present invention relates to a kind of testing circuit, particularly relate to a kind of battery power detection circuit.
Background technology
Current telepilot almost all needs to use in all household electrical appliance, and along with access times and the passing of time, telepilot must wear and tear and finally cause the inefficacy of telepilot, and simultaneously along with long use, remote controller battery electricity also can be tending towards exhausting, this also can cause the inefficacy of telepilot, actually or but the inefficacy of telepilot due to serious wear not enough due to battery electric quantity, often annoying user.In general family, owing to there is no special instrument, even if there is reserve battery, sometimes can not determine it is that what reason causes remote-controller function to lose efficacy on earth, do not having blindness dismounting telepilot in professional knowledge or experience situation often to cause telepilot machinery or circuit to damage, these make troubles often to people's daily life.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, the object of the present invention is to provide a kind of battery power detection circuit, and it detects battery electric quantity by adopting electronic circuit, and utilizes diode displaying battery electric quantity, with low cost, easy to use.
For reaching above-mentioned and other object, the present invention proposes a kind of battery power detection circuit, this battery power detection circuit comprises balancing cell, comparison module, display module, reference generating circuit, battery folder holding equipment and mesuring battary, the anode of described mesuring battary is connected to the inverting input of described comparison module, the negative terminal of described balancing cell and the anode of described battery folder holding equipment, the negative terminal of described mesuring battary connects the negative terminal ground of described comparison module and the negative terminal of described battery folder holding equipment, the power positive end of comparison module described in the positive termination of described balancing cell, the power positive end of described display module connects the anode of described balancing cell, the output of described comparison module connects the input end of shown display module, described reference generating circuit utilizes described balancing cell and described circuit under test to combine power supply, produce the in-phase input end of the reference voltage needed for described comparison module to described comparison module.
Further, described comparison module comprises several comparers, and the in-phase input end of each comparer connects described reference generating circuit, mesuring battary anode described in anti-phase input termination, exports and connects described display module.
Further, described comparison module comprises 4 comparers.
Further, described display module comprises several LED, and the negative electrode of each LED connects the output terminal of the comparer of described comparison module respectively.
Further, described display module comprises 4 LED.
Compared with prior art, a kind of battery power detection circuit of the present invention is by producing mesuring battary and reference generating circuit inverting input and the in-phase input end that reference voltage connects comparator circuit respectively, and by the output termination display module of comparator circuit, utilize diode displaying battery electric quantity, there is with low cost, easy to use, long-lived advantage.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of a kind of battery power detection circuit of the present invention.
Embodiment
Below by way of specific instantiation and accompanying drawings embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by content disclosed in the present specification.The present invention is also implemented by other different instantiation or is applied, and the every details in this instructions also can based on different viewpoints and application, carries out various modification and change not deviating under spirit of the present invention.
Fig. 1 is the circuit diagram of a kind of battery power detection circuit of the present invention, as shown in Figure 1, a kind of battery power detection circuit of the present invention, comprises balancing cell 10, comparison module 20, display module 30, reference generating circuit 40, battery folder holding equipment 50 and mesuring battary 60.
Wherein the anode of mesuring battary 60 is connected to the inverting input of comparison module 20, the negative terminal of balancing cell 10 and the anode of battery folder holding equipment 50, the anode Vcc of balancing cell 10 connects the power positive end of comparison module 20, the negative terminal of mesuring battary 60 connect comparison module 20 negative terminal () and the negative terminal of battery folder holding equipment 50, the power positive end of display module 30 connects the anode Vcc of balancing cell 10, the output of comparison module 20 connects the input (negative terminal of LED) of display module 30, reference generating circuit 40 utilizes balancing cell 10 and mesuring battary 60 to combine power supply, produce the reference voltage Ref1-4 needed for comparison module 20.Battery folder holding equipment 50 comprises general battery or external thin electrode, comparison module 20 comprises several comparers, its in-phase input end connects reference voltage, its inverting input connects mesuring battary 60 anode, in present pre-ferred embodiments, comparison module 20 comprises 4 comparers (CMP1-CMP4), its in-phase input end meets reference voltage Ref1-Ref4, inverting input connects mesuring battary 60 anode, display module 30 is several LED, in present pre-ferred embodiments, correspondingly, display module 30 comprises 4 LED(D1-D4), the negative electrode of these 4 LED is connected to the output terminal of 4 comparers respectively.Whether it should be noted that at this, use series limiting resistor to depend on balancing cell voltage and comparer load capacity at LED path, this is general technology, does not repeat them here.
When not working, because mesuring battary 60 disconnects, thus testing circuit non-transformer, thus balancing cell can not discharge, and only there is small electric leakage, when connecting mesuring battary 60, testing circuit power supply is complete, can normally work.Dry cell rated voltage is 1.5V, and when voltage is lower than general without any electricity during 1.2V, therefore the reference voltage Ref1-Ref4 arranging reference generating circuit 40 generation is respectively 1.15V, 1.25V, 1.35V, 1.45V.When voltage is lower than 1.15V, comparer exports overall height, does not have LED to light, when voltage is lower than 1.25V but higher than 1.15V, D1 lights, when voltage to be lighted higher than 1.25V, D1, D2, when voltage is lower than 1.45V but higher than 1.35V lower than 1.35V, D1, D2, D3 light, when voltage is higher than 1.45V, comparer CMP1, CMP2, CMP3, CMP4 output is low, and 4 LED all light.
In sum, a kind of battery power detection circuit of the present invention is by producing mesuring battary and reference generating circuit inverting input and the in-phase input end that reference voltage connects comparator circuit respectively, and by the output termination display module of comparator circuit, utilize diode displaying battery electric quantity, there is with low cost, easy to use, long-lived advantage.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can carry out modifying to above-described embodiment and change.Therefore, the scope of the present invention, should listed by claims.

Claims (5)

1. a battery power detection circuit, it is characterized in that: this battery power detection circuit comprises balancing cell, comparison module, display module, reference generating circuit, battery folder holding equipment and mesuring battary, the anode of described mesuring battary is connected to the inverting input of described comparison module, the negative terminal of described balancing cell and the anode of described battery folder holding equipment, the negative terminal of described mesuring battary connects the negative terminal ground of described comparison module and the negative terminal of described battery folder holding equipment, the power positive end of comparison module described in the positive termination of described balancing cell, the power positive end of described display module connects the anode of described balancing cell, the output of described comparison module connects the input end of shown display module, described reference generating circuit utilizes described balancing cell and described circuit under test to combine power supply, produce the in-phase input end of the reference voltage needed for described comparison module to described comparison module.
2. a kind of battery power detection circuit as claimed in claim 1, it is characterized in that: described comparison module comprises several comparers, the in-phase input end of each comparer connects described reference generating circuit, mesuring battary anode described in anti-phase input termination, exports and connects described display module.
3. a kind of battery power detection circuit as claimed in claim 2, is characterized in that: described comparison module comprises 4 comparers.
4. a kind of battery power detection circuit as claimed in claim 2, is characterized in that: described display module comprises several LED, the negative electrode of each LED connects the output terminal of the comparer of described comparison module respectively.
5. a kind of battery power detection circuit as claimed in claim 4, is characterized in that: described display module comprises 4 LED.
CN201410052334.3A 2014-02-15 2014-02-15 Circuit for detecting battery level CN104849663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410052334.3A CN104849663A (en) 2014-02-15 2014-02-15 Circuit for detecting battery level

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410052334.3A CN104849663A (en) 2014-02-15 2014-02-15 Circuit for detecting battery level

Publications (1)

Publication Number Publication Date
CN104849663A true CN104849663A (en) 2015-08-19

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CN201410052334.3A CN104849663A (en) 2014-02-15 2014-02-15 Circuit for detecting battery level

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140879A (en) * 1984-12-14 1986-06-27 Hitachi Ltd Battery warning circuit
CN200969385Y (en) * 2006-10-23 2007-10-31 恩平市邦华电子有限公司 Electric quantity indicator for battery
CN101620256A (en) * 2008-03-12 2010-01-06 凹凸电子(武汉)有限公司 Capacity detector, system and method for detecting capacity of an energy storage unit
CN101718844A (en) * 2009-12-01 2010-06-02 漳州市华威电源科技有限公司 Battery capacity testing device
CN202221445U (en) * 2011-10-10 2012-05-16 黄宇嵩 General battery pack low-voltage alarm circuit
CN102998622A (en) * 2011-09-08 2013-03-27 珠海格力电器股份有限公司 Remote control and method and device for detecting battery voltage of remote control

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61140879A (en) * 1984-12-14 1986-06-27 Hitachi Ltd Battery warning circuit
CN200969385Y (en) * 2006-10-23 2007-10-31 恩平市邦华电子有限公司 Electric quantity indicator for battery
CN101620256A (en) * 2008-03-12 2010-01-06 凹凸电子(武汉)有限公司 Capacity detector, system and method for detecting capacity of an energy storage unit
CN101718844A (en) * 2009-12-01 2010-06-02 漳州市华威电源科技有限公司 Battery capacity testing device
CN102998622A (en) * 2011-09-08 2013-03-27 珠海格力电器股份有限公司 Remote control and method and device for detecting battery voltage of remote control
CN202221445U (en) * 2011-10-10 2012-05-16 黄宇嵩 General battery pack low-voltage alarm circuit

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Application publication date: 20150819

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