CN204479638U - Series battery voltage metering circuit - Google Patents
Series battery voltage metering circuit Download PDFInfo
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- CN204479638U CN204479638U CN201520078368.XU CN201520078368U CN204479638U CN 204479638 U CN204479638 U CN 204479638U CN 201520078368 U CN201520078368 U CN 201520078368U CN 204479638 U CN204479638 U CN 204479638U
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- resistance
- photoelectric relay
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- amplifier
- triode
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Abstract
The utility model discloses series battery voltage metering circuit, comprise photoelectric relay U1, photoelectric relay U2, triode T, amplifier A and electric capacity C1, the port one contact resistance R1 of described photoelectric relay U1, resistance R1 one end connects power supply Uo, port 2 ground connection of photoelectric relay U1, the port 4 of photoelectric relay U1 connects battery incoming end CeLL1, and the port 3 of photoelectric relay U1 connects forward power end 9 and the resistance R4 of amplifier A simultaneously; The port 5 contact resistance R2 of described photoelectric relay U2, resistance R2 meets power supply Uo, port 6 ground connection of photoelectric relay U2, and the port 7 of photoelectric relay U2 connects battery incoming end CeLL2, the port 8 contact resistance R8 of photoelectric relay U2.The utility model is by above-mentioned principle, and this circuit is being measured single battery, and the resistance right without the need to resistance is strictly mated, and also just without the need to the resistors match of little resistance, reduce voltage detecting power consumption, accuracy of detection is guaranteed, and also more easily realizes large-scale production.
Description
Technical field
The utility model relates to voltage measurement field, is specifically related to series battery voltage metering circuit.
Background technology
Series battery is widely used in portable instrument, notebook computer, communication radio station and portable electric appts, space satellite, electric bicycle, electric automobile, energy storage device.In order to make the active volume of electric battery maximize and improve the reliability of electric battery, the cell performance in electric battery should be consistent, thus need monitor cell, namely needs to measure the voltage of cell.The method that series battery voltage is measured has a lot, and what application was more at present is Differential Detection type and two kinds, current source detection type.The resistance that Differential Detection type needs 2 resistance right is strictly mated, otherwise will the accuracy of detection of battery voltage be affected, in order to reduce the impact of detection line leakage current on consistency of battery pack during the method uses, need the resistance increasing resistance, will the difficulty of large-scale production be added and reduce accuracy of detection like this.And the resistance coupling only needing a resistance right in the testing circuit of current detection type, in order to improve the precision of detection, need the resistors match of little resistance, but increase detection line leakage current.
Utility model content
The utility model overcomes the deficiencies in the prior art, series battery voltage metering circuit is provided, this circuit is being measured single battery, the resistance right without the need to resistance is strictly mated, also just without the need to the resistors match of little resistance, reduce voltage detecting power consumption, accuracy of detection is guaranteed, and also more easily realizes large-scale production.
For solving above-mentioned technical matters, the utility model is by the following technical solutions: series battery voltage metering circuit, comprise photoelectric relay U1, photoelectric relay U2, triode T, amplifier A and electric capacity C1, the port one contact resistance R1 of described photoelectric relay U1, resistance R1 one end connects power supply Uo, port 2 ground connection of photoelectric relay U1, the port 4 of photoelectric relay U1 connects battery incoming end CeLL1, and the port 3 of photoelectric relay U1 connects forward power end 9 and the resistance R4 of amplifier A simultaneously; The port 5 contact resistance R2 of described photoelectric relay U2, resistance R2 meets power supply Uo, port 6 ground connection of photoelectric relay U2, and the port 7 of photoelectric relay U2 connects battery incoming end CeLL2, the port 8 contact resistance R8 of photoelectric relay U2; The contact resistance of the input end in the same way R8 of described amplifier A, the reverse input end contact resistance R3 of amplifier A, the basis set of the output terminal connecting triode T of amplifier A, also series capacitance C1 and resistance R7, resistance R7, electric capacity C1 and the equal ground connection of battery incoming end CeLL3 successively between the forward power end 9 and reverse electrical source end 10 of amplifier A; The emitter contact resistance R3 of described triode T and the common port of resistance R4, the collector contact resistance R5 of triode T and voltage output end Uout, resistance R5 ground connection, goes back contact resistance R6 between the basis set and earth terminal of triode T.Because leakage current will have an impact to the consistance of the cell in electric battery to be measured, just need to increase the right resistance coupling of resistance, and in the circuit in order to reduce detection line leakage current, namely Switching Power Supply electric current over the ground after connecting electricity is reduced, this circuit arranges two gauge tap, photoelectric relay U1 and photoelectric relay U2, only have when input quantity reaches setting according to the characteristic of photoelectric relay, ability conducting or disconnection, can photoelectric relay U1 be set to the same with the conduction value of photoelectric relay U2 in use, ensure the consistance of the single battery in the electric battery accessed respectively, the consistance ensureing cell in electric battery is strictly mated without the need to the resistance right by resistance, both ensure that accuracy of detection was also beneficial to and realized large-scale production.Because photoelectric relay utilizes less electric current to go to control larger electric current, decrease the power consumption of voltage detecting.
The model of described photoelectric relay U1 and photoelectric relay U2 is AQW216.The photoelectric relay stable performance of this model, cost performance is high.
The model of described triode T is LM321.This model triode is low in energy consumption, reduces the power consumption in voltage detecting further.
The resistance equal and opposite in direction of described resistance R1 and resistance R2.
Compared with prior art, the beneficial effects of the utility model are:
1, this circuit can be placed multiple single battery simultaneously and carry out voltage measurement, and two photoelectric relays are set, only have when input quantity reaches setting according to the characteristic of photoelectric relay, ability conducting or disconnection, can photoelectric relay U1 be set to the same with the conduction value of photoelectric relay U2 in use, ensure the consistance of the single battery in the electric battery accessed respectively, the consistance ensureing cell in electric battery is strictly mated without the need to the resistance right by resistance, both ensure that accuracy of detection was also beneficial to and realized large-scale production, and decrease the power consumption of voltage detecting.
2, the model of triode T is LM321, and this model triode is low in energy consumption, reduces the power consumption in voltage detecting further.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Be further elaborated the utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.
Embodiment 1:
As shown in Figure 1, the utility model comprises photoelectric relay U1, photoelectric relay U2, triode T, amplifier A and 0.1 F capacitor C1, the port one of described photoelectric relay U1 connects 330 Europe resistance R1, resistance R1 one end connects power supply Uo, port 2 ground connection of photoelectric relay U1, the port 4 of photoelectric relay U1 connects battery incoming end CeLL1, and the port 3 of photoelectric relay U1 connects forward power end 9 and the resistance R4 of amplifier A simultaneously; The port 5 of described photoelectric relay U2 connects 330 Europe resistance R2, and resistance R2 meets 3V power supply Uo, port 6 ground connection of photoelectric relay U2, and the port 7 of photoelectric relay U2 connects battery incoming end CeLL2, and the port 8 of photoelectric relay U2 connects 100 kilo-ohms of resistance R8; The contact resistance of the input end in the same way R8 of described amplifier A, the reverse input end of amplifier A connects 100 kilo-ohms of resistance R3, the basis set of the output terminal connecting triode T of amplifier A, also series capacitance C1 and resistance R7 successively between the forward power end 9 and reverse electrical source end 10 of amplifier A, 10 Europe resistance R7, electric capacity C1 and the equal ground connection of battery incoming end CeLL3; The emitter contact resistance R3 of described triode T and the common port of 2 Europe resistance R4, the collector of triode T connects 1 Europe resistance R5 and voltage output end Uout, resistance R5 ground connection, also connects 100 kilo-ohms of resistance R6 between the basis set and earth terminal of triode T.
Circuit working principle is as follows: the single battery in series battery to be detected is connected on respectively battery incoming end CeLL1, battery incoming end CeLL2 and battery incoming end CeLL3, when input quantity reaches the setting of two photoelectric relays, the photoelectric relay U1 of two identical conduction value and photoelectric relay U2 conducting, signal enters amplifier A and amplifies, and then by the voltage recorded being exported by voltage output end Uout after the gate action of triode T.Electric capacity C1 is wherein used for filtering, and resistance R6, resistance R5 are for the protection of the basis set of triode T and collector, and resistance R1 and resistance R2 is then for the protection of two photoelectric relays.Resistance R3 and resistance R4 then carries out gating for auxiliary triode T, and this technology is prior art, and this programme is just no longer repeated.
Because leakage current will have an impact to the consistance of the cell in electric battery to be measured, just need to increase the right resistance coupling of resistance, and in the circuit in order to reduce detection line leakage current, namely Switching Power Supply electric current over the ground after connecting electricity is reduced, this circuit arranges two gauge tap, photoelectric relay U1 and photoelectric relay U2, only have when input quantity reaches setting according to the characteristic of photoelectric relay, ability conducting or disconnection, can photoelectric relay U1 be set to the same with the conduction value of photoelectric relay U2 in use, ensure the consistance of the single battery in the electric battery accessed respectively, the consistance ensureing cell in electric battery is strictly mated without the need to the resistance right by resistance, both ensure that accuracy of detection was also beneficial to and realized large-scale production.Because photoelectric relay utilizes less electric current to go to control larger electric current, decrease the power consumption of voltage detecting.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: the model of photoelectric relay U1 and photoelectric relay U2 is AQW216.The photoelectric relay stable performance of this model, cost performance is high.
The model of triode T is LM321.This model triode is low in energy consumption, reduces the power consumption in voltage detecting further.
The resistance equal and opposite in direction of resistance R1 and resistance R2.
Just this utility model can be realized as mentioned above.
Claims (4)
1. series battery voltage metering circuit, it is characterized in that: comprise photoelectric relay U1, photoelectric relay U2, triode T, amplifier A and electric capacity C1, the port one contact resistance R1 of described photoelectric relay U1, resistance R1 one end connects power supply Uo, port 2 ground connection of photoelectric relay U1, the port 4 of photoelectric relay U1 connects battery incoming end CeLL1, and the port 3 of photoelectric relay U1 connects forward power end 9 and the resistance R4 of amplifier A simultaneously; The port 5 contact resistance R2 of described photoelectric relay U2, resistance R2 meets power supply Uo, port 6 ground connection of photoelectric relay U2, and the port 7 of photoelectric relay U2 connects battery incoming end CeLL2, the port 8 contact resistance R8 of photoelectric relay U2; The contact resistance of the input end in the same way R8 of described amplifier A, the reverse input end contact resistance R3 of amplifier A, the basis set of the output terminal connecting triode T of amplifier A, also series capacitance C1 and resistance R7, resistance R7, electric capacity C1 and the equal ground connection of battery incoming end CeLL3 successively between the forward power end 9 and reverse electrical source end 10 of amplifier A; The emitter contact resistance R3 of described triode T and the common port of resistance R4, the collector contact resistance R5 of triode T and voltage output end Uout, resistance R5 ground connection, goes back contact resistance R6 between the basis set and earth terminal of triode T.
2. series battery voltage metering circuit according to claim 1, is characterized in that: the model of described photoelectric relay U1 and photoelectric relay U2 is AQW216.
3. series battery voltage metering circuit according to claim 1, is characterized in that: the model of described triode T is LM321.
4. series battery voltage metering circuit according to claim 1, is characterized in that: the resistance equal and opposite in direction of described resistance R1 and resistance R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078368.XU CN204479638U (en) | 2015-02-04 | 2015-02-04 | Series battery voltage metering circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520078368.XU CN204479638U (en) | 2015-02-04 | 2015-02-04 | Series battery voltage metering circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479638U true CN204479638U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520078368.XU Expired - Fee Related CN204479638U (en) | 2015-02-04 | 2015-02-04 | Series battery voltage metering circuit |
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| Country | Link |
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| CN (1) | CN204479638U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614572A (en) * | 2015-02-04 | 2015-05-13 | 成都市宏山科技有限公司 | Voltage measuring circuit |
-
2015
- 2015-02-04 CN CN201520078368.XU patent/CN204479638U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614572A (en) * | 2015-02-04 | 2015-05-13 | 成都市宏山科技有限公司 | Voltage measuring circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160204 |