CN201773149U - Real-time online detection device for series voltage source - Google Patents
Real-time online detection device for series voltage source Download PDFInfo
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- CN201773149U CN201773149U CN2010205175512U CN201020517551U CN201773149U CN 201773149 U CN201773149 U CN 201773149U CN 2010205175512 U CN2010205175512 U CN 2010205175512U CN 201020517551 U CN201020517551 U CN 201020517551U CN 201773149 U CN201773149 U CN 201773149U
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- voltage
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- detection device
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Abstract
The utility model provides a real-time online detection device for series voltage source, comprises a plurality of voltage sampling modules, each consisting of a sampling circuit, a control circuit and a microcontroller, wherein a resistor with resistance error of 1% is utilized by a sampling resistor in the sampling circuit, a photocoupler is utilized by a control element in the control circuit, a control end of the control circuit is connected with an output end of the microcontroller, the photocouplers are controlled by the microcontroller to be switched on according to a set order, a sampling end of the sampling circuit is connected with a main controller for computing a single battery or capacitor voltage and total voltage in the series voltage source through an A/C converter, the main controller is further connected with an input end of the microcontroller for controlling the working state of the microcontroller. The utility model has the advantages of simple circuit structure, small volume, low power consumption, high efficiency, and high detection precision, which is capable of realizing inlaid mount, accurately detecting any abnormal in series voltage and greatly improving the working efficiency.
Description
Technical field
The utility model relates to series electrical potential source pick-up unit, relates in particular to a kind of series electrical potential source real time on-line detection device that can detect wherein cell or electric capacity.
Background technology
In electric automobile or hybrid-electric car, and in fields such as communication radio station, portable electric appts, space satellite, electric bicycles, be extensive use of motor as power source, electric power source as this motor needs very large voltage, and this just needs a plurality of cells of series connection or electric capacity to constitute electric battery or capacitor.The performance of cell or electric capacity directly has influence on the overall performance of electric battery or capacitor, in order to improve the reliability of electric battery or capacitor, monomer whose battery or capacitive property should be consistent, so accurate measurement need be arranged the voltage of each cell or electric capacity.
The method of measuring cell or capacitance voltage has multiple, and using more is operational amplifier difference amplifying method and direct sampling method.Direct sampling method is the simplest, and this method is to measure with the electric resistance partial pressure mode, measures the voltage of each series connection node successively, because the voltage of surveying is total voltage, monomer battery voltage only accounts for a part, and then measuring accuracy reduces in proportion.Another kind of measuring method is an operational amplifier difference amplifying method, be that each cell adopts one to isolate operational amplifier, can be converted to cell voltage unified by operational amplifier with reference to ground voltage, problems such as the drift error that causes by electric resistance partial pressure and leakage current have been avoided, but volume is big, price is high, only is suitable for the occasion that measuring accuracy requires height and do not consider leakage current and cost.In addition, also having a kind of method is to adopt relay array to select to measure, and this method adopts gauge tap more, causes complex structure, and volume is big.
The utility model content
The technical problems to be solved in the utility model provides a kind of measuring accuracy height, little, the leakage current of drift error, volume is little, can embed installation, can detect the series electrical potential source real time on-line detection device that also data can be transmitted monomer capacitance voltage and total voltage in cell in the electric battery or the capacitor.
The series electrical potential source real time on-line detection device that the utility model relates to, comprise a plurality of voltage sample modules, each voltage sample module is by sample circuit, control circuit and microcontroller are formed, its special character is: the sampling resistor employing resistance error in the sample circuit is 1% resistance, control element in the control circuit adopts photoelectrical coupler, the control end of described control circuit is connected with the output terminal of microcontroller, comply with the conducting of setting order by the microprocessor controls photoelectrical coupler, the sampling end of sample circuit by A/D converter be used to calculate the cell of series electrical potential source or the master controller of capacitance voltage and total voltage is connected, described master controller also is connected with the microcontroller input end, is used for controlling the duty of microcontroller.
Above-mentioned series electrical potential source real time on-line detection device, described master controller also is provided with the CAN communication interface, is used for realizing data transmission.
Above-mentioned series electrical potential source real time on-line detection device, described A/D converter and master controller integrate, and further reduce volume.
Above-mentioned series electrical potential source real time on-line detection device, described sample circuit is a Chip-R, further reduces volume.
The beneficial effects of the utility model are: sample circuit is by the control circuit Control work, and the photoelectrical coupler in the control circuit is used independent microprocessor controls respectively, by microcontroller photoelectrical coupler is complied with and sets the order connection; In the electric battery in cell or the capacitor voltage of monomer electric capacity constitute path by corresponding photoelectrical coupler and sampling resistor with ground, in the electric battery in cell or the capacitor monomer electric capacity sample through oversampled points and draw.Sample circuit adopt magnitude of voltage import master controller through A/D conversion back, obtain magnitude of voltage after the calculating.Wherein resistance is selected the resistance of resistance error 1%, guarantee the accuracy of magnitude of voltage sampling so fully, not only obtain magnitude of voltage accurately, also can reduce cost, and with the sampling section modularization, the quantity flexibility of voltage detecting can be made, the electric battery that the monomer of varying number forms or the monomer voltage and the total voltage of capacitor can be detected, flexible; It is unusual to check out accurately what series electrical is pressed with, and increases work efficiency greatly.Sampling resistor and earth terminal in the sample circuit are linked to be path, and earth terminal links to each other with ground, and this just forms altogether, can suppress drift error, reduces leakage current.Adopt photoelectrical coupler and carry A/D converter and the master controller of two-way CAN communication interface, entire circuit is compared with original circuit significantly reduced external circuit device cost and space, reduce volume, can realize embedding and install.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a voltage sample modular circuit schematic diagram of the present utility model.
Among the figure: voltage sample module 1, sample circuit 101, control circuit 102, microcontroller 103, A/D converter 2, master controller 3, CAN communication interface 4, adaptive power supply 5, resistance R
1～R
6, capacitor C
1～C
6, photoelectrical coupler U
1～U
6, cell or electric capacity V
1～V
6
Embodiment
As shown in the figure, this series electrical potential source real time on-line detection device comprises a plurality of voltage sample modules 1, can be according to the quantity of the different set voltage sample module 1 of the amount of monomer of forming power supply.Each voltage sample module 1 is made of sample circuit 101, control circuit 102 and microcontroller 103 respectively, and sample circuit 101 is by sampling resistor R
1～R
6And capacitor C
1～C
6Form.Sampling resistor R in the sample circuit 101
1～R
6The employing resistance error is 1% Chip-R.Control circuit 102 is by current-limiting resistance R
7～R
12Constitute with control element, described control element adopts photoelectrical coupler U
1～U
6, by photoelectrical coupler U
1～U
6The duty of control sample circuit 101, the control end of described control circuit 102 is connected with the output terminal of microcontroller 103, by microcontroller 103 control photoelectrical coupler U
1～U
6According to setting the order conducting, be positioned at the sampling resistor R of sample circuit 101 ends
1Input end be that the sampling end of sample circuit 101 is connected with master controller 3 by A/D converter 2, master controller 3 itself has two-way CAN communication interface 4.A/D converter 2 can integrate with master controller 3, promptly adopts the single-chip microcomputer that carries A/D converter 2 and two-way CAN communication interface 4, is used for realizing data transmission.By the total voltage of master controller 3 calculating each cell (or electric capacity) voltages and electric battery (or capacitor), described master controller 3 also is connected with microcontroller 103 input ends, is used for controlling the duty of microcontroller 103.
During wiring, the voltage input end of series electrical potential source real time on-line detection device meets cell (or electric capacity) V that links to each other successively
1～V
6The power end Vcc of control circuit 102 connects+the 5V power supply, the adaptive power supply 5 of the power supply termination of master controller 3 converts high voltage to low-voltage that single-chip microcomputer can be used by adaptive power supply 5, cell or electric capacity V in the sampling termination series electrical source of this series electrical potential source real time on-line detection device
1～V
6Microcontroller 103 control photoelectrical coupler U
1～U
6Conducting successively with end, can make series connected battery or capacitance voltage from the input of the voltage input end of correspondence, through sampling resistor R
6～R
1With earth terminal V
0Be linked to be path, earth terminal V
0Link to each other with ground, this just forms altogether, can suppress drift error, reduces leakage current.After voltage was connected, being divided to sampling end (was sampling resistor R
1The place) voltage is exactly the voltage of this batteries or electric capacity, and this voltage is connected with the input end of master controller 3 by the A/D conversion, calculates the back storage and can carry out data transmission through CAN communication interface 4 by master controller 3.
Claims (4)
1. series electrical potential source real time on-line detection device, comprise a plurality of voltage sample modules, each voltage sample module is by sample circuit, control circuit and microcontroller are formed, it is characterized in that: the sampling resistor employing resistance error in the sample circuit is 1% resistance, control element in the control circuit adopts photoelectrical coupler, the control end of described control circuit is connected with the output terminal of microcontroller, comply with the conducting of setting order by the microprocessor controls photoelectrical coupler, the sampling end of sample circuit by A/D converter be used to calculate the cell of series electrical potential source or the master controller of capacitance voltage and total voltage is connected, described master controller also is connected with the microcontroller input end, is used for controlling the duty of microcontroller.
2. series electrical potential source real time on-line detection device according to claim 1, it is characterized in that: described master controller also is provided with the CAN communication interface.
3. series electrical potential source real time on-line detection device according to claim 1, it is characterized in that: described A/D converter and master controller integrate.
4. series electrical potential source real time on-line detection device according to claim 1 is characterized in that: described sampling resistor is a Chip-R.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205175512U CN201773149U (en) | 2010-09-02 | 2010-09-02 | Real-time online detection device for series voltage source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205175512U CN201773149U (en) | 2010-09-02 | 2010-09-02 | Real-time online detection device for series voltage source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773149U true CN201773149U (en) | 2011-03-23 |
Family
ID=43752995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205175512U Expired - Fee Related CN201773149U (en) | 2010-09-02 | 2010-09-02 | Real-time online detection device for series voltage source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201773149U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749586A (en) * | 2011-04-22 | 2012-10-24 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN103134979A (en) * | 2011-11-28 | 2013-06-05 | 同济大学 | Checking circuit for energy storage device terminal voltage |
-
2010
- 2010-09-02 CN CN2010205175512U patent/CN201773149U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749586A (en) * | 2011-04-22 | 2012-10-24 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN102749586B (en) * | 2011-04-22 | 2014-09-10 | 上海中科国嘉储能技术有限公司 | Detecting system of battery pack and battery power supply system |
| CN103134979A (en) * | 2011-11-28 | 2013-06-05 | 同济大学 | Checking circuit for energy storage device terminal voltage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20130902 |