CN203164281U - Circuit for accurately measuring voltage of each single battery in battery pack comprising any number of batteries connected in series - Google Patents

Circuit for accurately measuring voltage of each single battery in battery pack comprising any number of batteries connected in series Download PDF

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Publication number
CN203164281U
CN203164281U CN 201320025367 CN201320025367U CN203164281U CN 203164281 U CN203164281 U CN 203164281U CN 201320025367 CN201320025367 CN 201320025367 CN 201320025367 U CN201320025367 U CN 201320025367U CN 203164281 U CN203164281 U CN 203164281U
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China
Prior art keywords
switch
cell
battery
series
connect
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Expired - Fee Related
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CN 201320025367
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Chinese (zh)
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赵恩海
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YANCHENG HUIZHONG NEW ENERGY TECHNOLOGY CO., LTD.
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赵恩海
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Abstract

A circuit for accurately measuring voltage of each single battery in a battery pack comprising any number of batteries connected in series is disclosed. Each single battery in the series connection battery pack is respectively connected to an analog-to-digital converter through a switch network by the circuit, and voltage of two ends of each single battery is directly converted into a digital voltage value through the analog-to-digital converter. The beneficial effects are that the circuit is simple in structure and small in measurement error.

Description

The accurate metering circuit of each monomer battery voltage in a kind of any joint series battery
Technical field
The utility model relates to the circuit that a kind of accurate measurement saves each monomer battery voltage in the series battery arbitrarily.This circuit is directly connected to each cell in the series battery on the analog to digital converter by a switching network respectively, by analog to digital converter each cell both end voltage is directly changed into digital voltage value.
Background technology
Rechargeable battery as lithium battery, lead-acid battery etc., when series connection is used in groups, need be done monitoring to each monomer battery voltage.For a large amount of series connected battery groups, generally adopt special IC or with flying capacitance measurement.Though special IC is easy to use, cost is than higher.Traditional capacitance measurement method that flies needs the higher switch of speed, and also there is the higher shortcoming of cost in loss of accuracy easily.
Summary of the invention
In order to overcome shortcomings such as having the precision of measuring each monomer battery voltage circuit existence of electric battery is low, cost height now, the utility model provides a kind of novel metering circuit, is used for measuring each monomer battery voltage in any joint series connected battery group.
The utility model solves the technical scheme that its technical matters adopts: if the series connection joint number is even number, and battery Cell in the series battery 1, Cell 3Cell 2n-1Positive pole connect switch S respectively 1, S 3S 2n-1, battery Cell 2Cell 2n-2, Cell 2nPositive pole connect switch S respectively 2S 2n-2, S 2n, wherein n represents any natural number, battery Cell 1Negative pole and switch S 0Connect, the simulating signal negative input end AIN-of switch S E0 and SO0 connection mode number converter ADC, the simulating signal positive input terminal AIN+ of switch S O1 and SE1 connection mode number converter ADC, if the series connection joint number is odd number, battery Cell in the series battery 1, Cell 3Cell 2n-1, Cell 2n+1Positive pole connect switch S respectively 1, S 3S2 N-1, S 2n+1, battery Cell 2Cell 2nPositive pole connect switch S respectively 2S 2n, battery Cell 1Negative pole and switch S 0Connect the simulating signal negative input end AIN-of switch S E0 and SO0 connection mode number converter ADC, the simulating signal positive input terminal AIN+ of switch S O1 and SE1 connection mode number converter ADC.If the series connection joint number is even number, switch S 0, S 2S 2n-2, S 2nThe other end link to each other, and connect the other end of switch S E0 and SE1, switch S 1, S 3S 2n-1The other end link to each other, and connect the other end of switch S O0 and SO1.If the series connection joint number is odd number, switch S 0, S 2S 2nThe other end link to each other, and connect the other end of switch S E0 and SE1, switch S 1, S 3S 2n-1, S 2n+1The other end link to each other, and connect the other end of switch S O0 and SO1.
The beneficial effects of the utility model are that circuit structure is simple, measuring error is little.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 and Fig. 2 are schematic diagrams of the present utility model.
Among Fig. 1 and Fig. 2, Cell 1, Cell 2, Cell 3Cell 2n-2, Cell 2n-1, Cell 2n, Cell 2n+1Be the cell of series connection, they are composed in series series battery as shown in the figure successively.S 0, S 1, S 2, S 3S 2n-2, S 2n-1, S 2n, S 2n+1, SO0, SO1, SE0 and SE1 be switch, ADC is analog to digital converter, wherein AIN+ is the simulating signal positive input terminal of ADC, AIN-is the simulating signal negative input end of ADC, dotted line represents abridged cell, switch and connecting line thereof among the figure.
Embodiment
Fig. 1 shows is working method when the series connection even number saves cell in the electric battery.Among Fig. 1, battery Cell in the series battery 1, Cell 3Cell 2n-1Positive pole connect switch S respectively 1, S 3S 2n-1, wherein n represents any natural number.Battery Cell in the series battery 2Cell 2n-2, Cell 2nPositive pole connect switch S respectively 2S 2n-2, S 2nBattery Cell 1Negative pole and switch S 0Connect.Switch S 0, S 2S 2n-2, S 2nThe other end link to each other, and connect switch S E0 and SE1.Switch S 1, S 3S 2n-1The other end link to each other, and connect switch S O0 and SO1.The simulating signal negative input end AIN-of the other end connection mode number converter ADC of switch S E0 and SO0, the simulating signal positive input terminal AIN+ of the other end connection mode number converter ADC of switch S O1 and SE1.Dotted line represents abridged cell, switch and connecting line thereof among the figure.
Measure battery Cell 1The time, connect switch S 1, S 0, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 1Voltage signal be directly changed into digital voltage value.
Measure battery Cell 2The time, connect switch S 2, S 1, SE1 and SO0, other switches keep off states, analog to digital converter ADC is with battery Cell 2Voltage signal be directly changed into digital voltage value.
Measure battery Cell 3The time, connect switch S 3, S 2, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 3Voltage signal be directly changed into digital voltage value.
Measure battery Cell 2n-1The time, connect switch S 2n-1, S 2n-2, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 2n-1Voltage signal be directly changed into digital voltage value.
Measure battery Cell 2nThe time, connect switch S 2n, S 2n-1, SE1 and SO0, other switches keep off states, analog to digital converter ADC is with battery Cell2 nVoltage signal be directly changed into digital voltage value.
For being connected on Cell 3And Cell 2n-1Between the metering system of battery, can be according to battery Cell 2n-1And Cell 2nThe mode of measuring is analogized.
Fig. 2 shows is working method when the series connection odd number saves cell in the electric battery.Among Fig. 2, battery Cell in the series battery 1, Cell 3Cell 2n-1, Cell 2n+1Positive pole connect switch S respectively 1, S 3S 2n-1, S 2n+1, wherein n represents any natural number.Battery Cell in the series battery 2Cell 2nPositive pole connect switch S respectively 2S 2nBattery Cell 1Negative pole and switch S 0Connect.Switch S 0, S 2S 2nThe other end link to each other, and connect switch S E0 and SE1.Switch S 1, S 3S2 N-1, S2 N+1The other end link to each other, and connect switch S O0 and SO1.The simulating signal negative input end AIN-of the other end connection mode number converter ADC of switch S E0 and SO0, the simulating signal positive input terminal AIN+ of the other end connection mode number converter ADC of switch S O1 and SE1.Dotted line represents abridged cell, switch and connecting line thereof among the figure.
Measure battery Cell 1The time, connect switch S 1, S 0, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 1Voltage signal be directly changed into digital voltage value.
Measure battery Cell 2The time, connect switch S 2, S 1, SE1 and SO0, other switches keep off states, analog to digital converter ADC is with battery Cell 2Voltage signal be directly changed into digital voltage value.
Measure battery Cell 3The time, connect switch S 3, S 2, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 3Voltage signal be directly changed into digital voltage value.
Measure battery Cell 2nThe time, connect switch S 2n, S 2n-1, SE1 and SO0, other switches keep off states, analog to digital converter ADC is with battery Cell 2nVoltage signal be directly changed into digital voltage value.
Measure battery Cell 2n+1The time, connect switch S 2n+1, S 2n, SO1 and SE0, other switches keep off states, analog to digital converter ADC is with battery Cell 2n+1Voltage signal be directly changed into digital voltage value.
For being connected on Cell 3And Cell 2nBetween the metering system of battery, can be according to battery Cell 2n-1And Cell 2nThe mode of measuring is analogized.

Claims (3)

1. one kind is saved the accurate metering circuit of each monomer battery voltage in the series battery arbitrarily, it is characterized in that: if the series connection joint number is even number, and battery Cell in the series battery 1, Cell 3Cell 2n-1Positive pole connect switch S respectively 1, S 3S 2n-1, battery Cell 2Cell 2n-2, Cell 2nPositive pole connect switch S respectively 2S 2n-2, S 2n, wherein n represents any natural number, battery Cell 1Negative pole and switch S 0Connect, the simulating signal negative input end AIN-of switch S E0 and SO0 connection mode number converter ADC, the simulating signal positive input terminal AIN+ of switch S O1 and SE1 connection mode number converter ADC, if the series connection joint number is odd number, battery Cell in the series battery 1, Cell 3Cell 2n-1, Cell 2n+1Positive pole connect switch S respectively 1, S 3S 2n-1, S 2n+1, battery Cell 2Cell 2nPositive pole connect switch S respectively 2S 2n, battery Cell 1Negative pole and switch S 0Connect the simulating signal negative input end AIN-of switch S E0 and SO0 connection mode number converter ADC, the simulating signal positive input terminal AIN+ of switch S O1 and SE1 connection mode number converter ADC.
2. the accurate metering circuit of each monomer battery voltage in any joint series battery according to claim 1 is characterized in that: if the series connection joint number is even number, and switch S 0, S 2S 2n-2, S 2nThe other end link to each other, and connect the other end of switch S E0 and SE1, switch S 1, S 3S 2n-1The other end link to each other, and connect the other end of switch S O0 and SO1.
3. the accurate metering circuit of each monomer battery voltage in any joint series battery according to claim 1 is characterized in that: if the series connection joint number is odd number, and switch S 0, S 2S 2nThe other end link to each other, and connect the other end of switch S E0 and SE1, switch S 1, S 3S 2n-1, S 2n+1The other end link to each other, and connect the other end of switch S O0 and SO1.
CN 201320025367 2013-01-17 2013-01-17 Circuit for accurately measuring voltage of each single battery in battery pack comprising any number of batteries connected in series Expired - Fee Related CN203164281U (en)

Priority Applications (1)

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CN 201320025367 CN203164281U (en) 2013-01-17 2013-01-17 Circuit for accurately measuring voltage of each single battery in battery pack comprising any number of batteries connected in series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320025367 CN203164281U (en) 2013-01-17 2013-01-17 Circuit for accurately measuring voltage of each single battery in battery pack comprising any number of batteries connected in series

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941074A (en) * 2013-01-17 2014-07-23 赵恩海 Circuit used for accurately measuring voltage of each single battery in arbitrary cascade battery pack

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103941074A (en) * 2013-01-17 2014-07-23 赵恩海 Circuit used for accurately measuring voltage of each single battery in arbitrary cascade battery pack

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C14 Grant of patent or utility model
GR01 Patent grant
CP02 Change in the address of a patent holder

Address after: 1002, room 418, unit 17, Qingjiang, Xiyuan, Jiangdong North Road, 210036, Jiangsu, Nanjing

Patentee after: Zhao Enhai

Address before: 210036, room 36, building 602, phoenix garden, Longfeng garden, Gulou District, Nanjing, Jiangsu

Patentee before: Zhao Enhai

ASS Succession or assignment of patent right

Owner name: YANCHENG HUIZHONG NEW ENERGY TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: ZHAO ENHAI

Effective date: 20150615

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150615

Address after: 224051 No. 666 Yingbin Road, Nanyang Economic Zone, Jiangsu, Yancheng City

Patentee after: YANCHENG HUIZHONG NEW ENERGY TECHNOLOGY CO., LTD.

Address before: 1002, room 418, unit 17, Qingjiang, Xiyuan, Jiangdong North Road, 210036, Jiangsu, Nanjing

Patentee before: Zhao Enhai

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: 20130828

Termination date: 20190117