CN204116438U - Monomer battery voltage measurement circuit in a kind of novel battery group - Google Patents
Monomer battery voltage measurement circuit in a kind of novel battery group Download PDFInfo
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- CN204116438U CN204116438U CN201420653894.XU CN201420653894U CN204116438U CN 204116438 U CN204116438 U CN 204116438U CN 201420653894 U CN201420653894 U CN 201420653894U CN 204116438 U CN204116438 U CN 204116438U
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Abstract
The utility model provides monomer battery voltage measurement circuit in a kind of novel battery group.The positive pole of measured cell and negative pole contact resistance R1 and R3 respectively, the positive input terminal of the other end difference contact resistance R2 and operational amplifier Op-Amp1 of resistance R1, the positive input terminal of the other end difference contact resistance R4 and operational amplifier Op-Amp2 of resistance R3, the other end ground connection of resistance R2 and R4, the negative input end of operational amplifier Op-Amp1 connects its output terminal and resistance R5 successively, the negative input end of operational amplifier Op-Amp2 connects its output terminal and resistance R6 successively, the positive input terminal of the other end difference contact resistance R7 and operational amplifier Op-Amp3 of resistance R5, the negative input end of the other end difference contact resistance R8 and operational amplifier Op-Amp3 of resistance R6, the other end ground connection of resistance R7, the output terminal of the other end concatenation operation amplifier Op-Amp3 of resistance R8, the output terminal of operational amplifier Op-Amp3 is signal output part.Circuit structure of the present utility model is simple, stable performance, cheap, there is higher practical value.
Description
Technical field
The utility model relates to a kind of tension measuring circuit, is specifically related to monomer battery voltage measurement circuit in a kind of electric battery.
Background technology
For rechargeable battery, as lithium battery etc., when series connection uses in groups, need to monitor each monomer battery voltage.For the electric battery of a large amount of series connection, generally adopt special IC or with flying capacitance measurement.Although special IC is easy to use, cost compare is high.Traditional capacitance measurement method that flies needs a large amount of switches, also there is the shortcoming that cost is higher.
Summary of the invention
In order to overcome the high shortcoming of cost that existing measurement electric battery each monomer battery voltage circuit exists, the utility model provides a kind of operational amplifier that adopts to be the metering circuit of main element, is used for measuring any joint monomer battery voltage in series battery.
The utility model solves the technical scheme that its technical matters adopts:
Monomer battery voltage measurement circuit in a kind of novel battery group, it is characterized in that: the positive pole of cell measured in electric battery and negative pole contact resistance R1 and resistance R3 respectively, the positive input terminal of the other end difference contact resistance R2 and operational amplifier Op-Amp1 of resistance R1, the positive input terminal of the other end difference contact resistance R4 and operational amplifier Op-Amp2 of resistance R3, the other end ground connection of resistance R2 and resistance R4, the negative input end of operational amplifier Op-Amp1 connects its output terminal and resistance R5 successively, the negative input end of operational amplifier Op-Amp2 connects its output terminal and resistance R6 successively, the positive input terminal of the other end difference contact resistance R7 and operational amplifier Op-Amp3 of resistance R5, the negative input end of the other end difference contact resistance R8 and operational amplifier Op-Amp3 of resistance R6, the other end ground connection of resistance R7, the output terminal of the other end concatenation operation amplifier Op-Amp3 of resistance R8, the output terminal of operational amplifier Op-Amp3 is signal output part.
The principle of work of the utility model metering circuit is: measured cell cathode voltage is after the bleeder circuit that resistance R1 and R2 forms is decayed, the follower consisted of operational amplifier Op-Amp1 keeps voltage constant, enters the positive input terminal of the subtracter be made up of resistance R5, R6, R7, R8 and operational amplifier Op-Amp3.Measured cell cathode voltage is after the bleeder circuit that resistance R3 and R4 forms is decayed, and the follower consisted of operational amplifier Op-Amp2 keeps voltage constant, enters the negative input end of subtracter.The battery plus-negative plate voltage signal collected subtracts each other by subtracter, outputs to signal output part.
The beneficial effects of the utility model are, can overcome the technological deficiency of existing metering circuit, and its circuit structure is simple, stable performance, cheap, and components and parts used commercially obtain than being easier to, and have higher practical value.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Circuit structure of the present utility model as shown in Figure 1, the positive pole of cell measured in electric battery and negative pole contact resistance R1 and R3 respectively, the other end contact resistance R2 of resistance R1 and the positive input terminal of operational amplifier Op-Amp1, the other end contact resistance R4 of resistance R3 and the positive input terminal of operational amplifier Op-Amp2, the other end ground connection of resistance R2 and R4, the negative input end of operational amplifier Op-Amp1 connects output terminal and resistance R5, the negative input end of operational amplifier Op-Amp2 connects output terminal and resistance R6, the other end contact resistance R7 of resistance R5 and the positive input terminal of operational amplifier Op-Amp3, the other end contact resistance R8 of resistance R6 and the negative input end of operational amplifier Op-Amp3, the other end ground connection of resistance R7, the output terminal of the other end concatenation operation amplifier Op-Amp3 of resistance R8, the output terminal of operational amplifier Op-Amp3 is signal output part.
In FIG, resistance R1 and R2 forms a bleeder circuit and decays to measured cell cathode voltage.Resistance R3 and R4 forms a bleeder circuit and decays to measured cell cathode voltage.Operational amplifier Op-Amp1 forms a follower, and its output voltage signal is equal with positive input terminal voltage signal.Operational amplifier Op-Amp2 forms a follower, and its output voltage signal is equal with positive input terminal voltage signal.Resistance R5, R6, R7, R8 and operational amplifier Op-Amp3 form a subtracter.Anode voltage is after the bleeder circuit that resistance R1 and R2 forms is decayed, and the follower consisted of operational amplifier Op-Amp1 keeps voltage constant, enters the positive input terminal of subtracter.Battery cathode voltage is after the bleeder circuit that resistance R3 and R4 forms is decayed, and the follower consisted of operational amplifier Op-Amp2 keeps voltage constant, enters the negative input end of subtracter.The battery plus-negative plate voltage signal collected subtracts each other by subtracter, outputs to signal output part.Voltage signal and the cell voltage of signal output part are directly proportional.If establish R1=R3, R2=R4, R5=R7, R6=R8, according to above-mentioned principle, voltage=cell voltage × R2/ (the R1+R2) × R8/R6 of signal output part.
Claims (1)
1. monomer battery voltage measurement circuit in a novel battery group, it is characterized in that: the positive pole of cell measured in electric battery and negative pole contact resistance R1 and resistance R3 respectively, the positive input terminal of the other end difference contact resistance R2 and operational amplifier Op-Amp1 of resistance R1, the positive input terminal of the other end difference contact resistance R4 and operational amplifier Op-Amp2 of resistance R3, the other end ground connection of resistance R2 and resistance R4, the negative input end of operational amplifier Op-Amp1 connects its output terminal and resistance R5 successively, the negative input end of operational amplifier Op-Amp2 connects its output terminal and resistance R6 successively, the positive input terminal of the other end difference contact resistance R7 and operational amplifier Op-Amp3 of resistance R5, the negative input end of the other end difference contact resistance R8 and operational amplifier Op-Amp3 of resistance R6, the other end ground connection of resistance R7, the output terminal of the other end concatenation operation amplifier Op-Amp3 of resistance R8, the output terminal of operational amplifier Op-Amp3 is signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653894.XU CN204116438U (en) | 2014-11-04 | 2014-11-04 | Monomer battery voltage measurement circuit in a kind of novel battery group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653894.XU CN204116438U (en) | 2014-11-04 | 2014-11-04 | Monomer battery voltage measurement circuit in a kind of novel battery group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204116438U true CN204116438U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420653894.XU Active CN204116438U (en) | 2014-11-04 | 2014-11-04 | Monomer battery voltage measurement circuit in a kind of novel battery group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204116438U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117728545A (en) * | 2024-02-08 | 2024-03-19 | 深圳市百千成电子有限公司 | Control method and system for balance treatment of energy storage system |
-
2014
- 2014-11-04 CN CN201420653894.XU patent/CN204116438U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117728545A (en) * | 2024-02-08 | 2024-03-19 | 深圳市百千成电子有限公司 | Control method and system for balance treatment of energy storage system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 211199 Guangli Road, dongshanqiao industrial concentration area, Guli street, Jiangning District, Nanjing, Jiangsu Province Patentee after: Nanjing pigeon Hi Tech Co.,Ltd. Address before: 211153, Jiangsu, Jiangning Province, Nanjing District, Gu Jie street, East good bridge industrial concentration zone, Guang Li Road, No. 99 Patentee before: NANJING DALUGE HIGH-TECH CO.,LTD. |
|
| CP03 | Change of name, title or address |