CN204855622U - A direct transform formula is at line voltage monitoring devices for storage battery - Google Patents
A direct transform formula is at line voltage monitoring devices for storage battery Download PDFInfo
- Publication number
- CN204855622U CN204855622U CN201520379145.7U CN201520379145U CN204855622U CN 204855622 U CN204855622 U CN 204855622U CN 201520379145 U CN201520379145 U CN 201520379145U CN 204855622 U CN204855622 U CN 204855622U
- Authority
- CN
- China
- Prior art keywords
- voltage
- circuit
- resistance
- line voltage
- monitoring device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a direct transform formula is at line voltage monitoring devices for storage battery, include: voltage frequency converting circuit in with direct current storage battery every voltage conversion who holds cell become frequency signal to transmit to buffer circuit, voltage frequency converting circuit's power supply voltage is regarded as simultaneously to every voltage that holds cell, buffer circuit receives frequency signal to export the host computer to, the host computer will frequency signal conversion becomes voltage signal and monitors it. The utility model discloses the circuit is simple reliable to measure the part at battery voltage, avoid using linear light buffer circuit, and wholely need not be able to bear or endure several at line voltage monitoring devices and lie prostrate the highly compressed amplifier of common modes, greatly simplified the circuit, reduced manufacturing cost, improved monitoring devices's reliability, be applicable to and monitor various storage battery.
Description
Technical field
The utility model relates to battery pack field, and particularly relate to a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack, the utility model is applicable to monitor various battery pack.
Background technology
Battery pack has a wide range of applications in real work, such as: the energy storage of mains supply system, fork truck, underground transportation vehicle, wind light generation, etc.But the inefficacy of any one the unit accumulator in battery pack all will affect the overall work of battery pack, even cause the inefficacy of whole electric power system.Thus, any one battery pack is all configured with a set of supervisory system, monitors the voltage of each element cell in battery pack, internal resistance and temperature etc.
But, relative supervisory system " ", the voltage of each unit accumulator is all not identical, reaches as high as hundreds of volt, therefore, carries out monitoring have difficulties and even cause security threat to system the voltage of each unit accumulator.
Utility model people is realizing in process of the present utility model, finds at least there is following shortcoming and defect in prior art:
In order to solve the problem, supervising device of the prior art have employed the amplifier that can stand up to a few hectovolt common mode high pressure, but amplifier in circuit some component failure time can produce chain reaction most probably, cause the damage of whole supervisory system.
In order to avoid catastrophic consequence and the reliability improving supervisory system, also been proposed in prior art and adopt the methods such as linear photoelectric isolation in battery voltage measuring part, but its corresponding consequence brought is: the isolation of Phototube Coupling or other kinds will make that voltage measurement accuracy is not high, front stage circuits needs power supply, increase considerably cost and the complicacy of circuit.
Utility model content
The utility model provides a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack, the utility model, not by under the impact of high common mode voltage, greatly simplifies circuit, reduces production cost, improve the reliability of monitoring device, described below:
For a Direct Transform formula on-Line Voltage monitoring device for battery pack, comprising: direct-flow storage battery group and host computer,
Described on-Line Voltage monitoring device also comprises: the voltage frequency conversioning circuit be electrically connected with each secondary battery unit in described direct-flow storage battery group, and described voltage frequency conversioning circuit is electrically connected buffer circuit and host computer successively;
The voltage transitions of each secondary battery unit is become frequency signal by described voltage frequency conversioning circuit, and transfers to described isolation road; The voltage of each secondary battery unit is simultaneously as the supply voltage of voltage frequency conversioning circuit;
Described buffer circuit receives described frequency signal, and exports described host computer to; Host computer converts described frequency signal to voltage signal and monitors it.
Wherein, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of electric capacity, the negative polarity input end of operational amplifier respectively; The other end ground connection of described electric capacity; The positive polarity input end of described operational amplifier connects one end of the second resistance and one end of the 3rd resistance, the other end ground connection of described second resistance respectively; The other end of described first resistance, the other end of described 3rd resistance connect the output terminal of described operational amplifier, and described operational amplifier exports described frequency signal to described buffer circuit.
Another embodiment, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of electric capacity, the input end of phase inverter respectively, the other end ground connection of described electric capacity; The output terminal of described phase inverter connects the other end of described first resistance, and the output terminal of described phase inverter exports described frequency signal to described buffer circuit.
Further, described buffer circuit is optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
Described optoisolator is the optoisolator of 6N138 or 4N25 model.
Described magnetic coupling isolator is the magnetic coupling isolator of ADUM1200 model.
Described capacitive coupling digital isolator is the capacitive coupling digital isolator of ISO7220 or ISO7221 model.
The beneficial effect of the technical scheme that the utility model provides is: the voltage transitions of accumulator is become corresponding frequency by voltage frequency conversioning circuit by the utility model, then by buffer circuit, frequency signal is transferred to host computer, achieve the on-Line Voltage of battery pack is monitored; The utility model circuit is simple and reliable, and in battery voltage measuring part, avoid using linear light buffer circuit, and whole on-Line Voltage monitoring device does not need the amplifier of a few hectovolt common mode high pressure, greatly simplifie circuit, reduce production cost, improve the reliability of monitoring device, be applicable to monitor various battery pack.
Accompanying drawing explanation
The structural representation of a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack that Fig. 1 provides for embodiment 1;
The structural representation of a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack that Fig. 2 provides for embodiment 2;
The structural representation of a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack that Fig. 3 provides for embodiment 3.
In accompanying drawing, the list of parts representated by each label is as follows:
1: direct-flow storage battery group; 2: voltage frequency conversioning circuit;
3: buffer circuit; 4: host computer;
R1: the first resistance; R2: the second resistance;
R3: the three resistance; C1: electric capacity;
A1: operational amplifier; I: phase inverter;
VO: the voltage of direct-flow storage battery group; F0: frequency signal.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below the utility model embodiment is described in further detail.
Embodiment 1
A kind of Direct Transform formula on-Line Voltage monitoring device for battery pack, see Fig. 1, this Direct Transform formula on-Line Voltage monitoring device comprises: direct-flow storage battery group 1, voltage frequency conversioning circuit 2, buffer circuit 3 and host computer 4, each secondary battery unit in direct-flow storage battery group 1 is (as unit under test, the number of unit under test sets according to actual conditions) electrical connection voltage frequency conversioning circuit 2, voltage frequency conversioning circuit 2 is electrically connected buffer circuit 3, and buffer circuit 3 is electrically connected host computer 4;
The voltage V0 of each secondary battery unit in direct-flow storage battery group 1 is converted to frequency signal F0 by voltage frequency conversioning circuit 2, and (namely the voltage V0 of each secondary battery unit is namely as the voltage be converted, again as the supply voltage of voltage frequency conversioning circuit 2), and transfer to buffer circuit 3; Buffer circuit receiving frequency signals F0, and the frequency signal exporting each secondary battery unit in direct-flow storage battery group 1 is to host computer 4; Host computer 4 converts frequency signal to voltage signal and monitors the voltage signal of all secondary battery units.
That is, frequency signal F0 is directly proportional to the voltage V0 of each secondary battery unit in direct-flow storage battery group 1.
During practical application, each secondary battery unit in direct-flow storage battery group 1 is all equipped with by voltage frequency conversioning circuit 2, the circuit that buffer circuit 3 forms, host computer 4 is shared module, such as: see Fig. 1, direct-flow storage battery group 1 comprises 3 secondary battery units, each secondary battery unit is all equipped with by voltage frequency conversioning circuit 2, (whole direct-flow storage battery group 1 needs 3 voltage frequency conversioning circuits 2 to the circuit that buffer circuit 3 forms, 3 buffer circuits 3), 3 secondary battery units share a host computer 4 (whole direct-flow storage battery group 1 needs 1 host computer 4).The interlock circuit that the utility model embodiment is equipped with for a secondary battery unit is described, and the outfit circuit of whole direct-flow storage battery group 1 repeats no more.
The present embodiment is in battery voltage measuring part, avoid using linear light buffer circuit, and whole on-Line Voltage monitoring device does not need the amplifier of resistance to a few hectovolt common mode high pressure, and this on-Line Voltage monitoring device improves the reliability of circuit, reduces production cost.
The model of the utility model embodiment to each device does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 2
A kind of Direct Transform formula on-Line Voltage monitoring device for battery pack, see Fig. 1 and Fig. 2, this embodiment 2 as different from Example 1 voltage frequency conversioning circuit 2 have employed the circuit shown in Fig. 2, voltage frequency conversioning circuit 2 is for being directly proportional output frequency signal F0 to the voltage V0 of secondary battery unit, this voltage frequency conversioning circuit 2 comprises: the first resistance R1
One end of first resistance R1 connects one end (meeting the voltage V0 of each secondary battery unit in direct-flow storage battery group 1) of electric capacity C1, the other end ground connection of electric capacity C1; The negative polarity input end of one end concatenation operation amplifier A of the first resistance R1; The positive polarity input end of operational amplifier A connects one end of the second resistance R2 and one end of the 3rd resistance R3, the other end ground connection of the second resistance R2 respectively; The output terminal of the other end of the first resistance R1, the other end concatenation operation amplifier A of the 3rd resistance R3, operational amplifier A output frequency signal F0 is to buffer circuit 3.
The present embodiment, by adopting the voltage frequency conversioning circuit 2 of designed, designed, makes frequency signal F0 be directly proportional to the voltage V0 of each secondary battery unit in direct-flow storage battery group 1.Can improve by this voltage frequency conversioning circuit 2 precision that voltage transitions becomes frequency signal further, meet the multiple needs in practical application.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 3
A kind of Direct Transform formula on-Line Voltage monitoring device for battery pack, see Fig. 1 and Fig. 3, this embodiment 3 have employed the circuit shown in Fig. 3 with embodiment 1, embodiment 2 unlike voltage frequency conversioning circuit 2, voltage frequency conversioning circuit 2 is for being directly proportional output frequency signal F0 to the voltage V0 of secondary battery unit, this voltage frequency conversioning circuit 2 comprises: the first resistance R1
One end of first resistance R1 connects one end (meeting the voltage V0 of each secondary battery unit in direct-flow storage battery group 1) of electric capacity C1, the other end ground connection of electric capacity C1; One end of first resistance R1 connects the input end of phase inverter I, and the output terminal of phase inverter I connects the other end of the first resistance R1, and the output terminal output frequency signal F0 of phase inverter I is to buffer circuit 3.
The present embodiment, by adopting the voltage frequency conversioning circuit 2 of designed, designed, makes frequency signal F0 be directly proportional to the voltage V0 of each secondary battery unit in direct-flow storage battery group 1.Can improve by this voltage frequency conversioning circuit 2 precision that voltage transitions becomes frequency signal further, this voltage frequency conversioning circuit 2 is only made up of simple resistance, electric capacity and phase inverter, and cost of manufacture is simple, meets the multiple needs in practical application.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
Embodiment 4
For a Direct Transform formula on-Line Voltage monitoring device for battery pack, see Fig. 1, this embodiment 4 and embodiment 1-3 unlike, the buffer circuit 3 in this embodiment 4 adopts concrete circuit components,
Wherein, this buffer circuit 3 can be: optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
When buffer circuit 3 is optoisolator, the optoisolator of 6N138 or 4N25 model can be adopted.
When buffer circuit 3 is magnetic coupling isolator, the magnetic coupling isolator of ADUM1200 model can be adopted.
When buffer circuit 3 adopts capacitive coupling digital isolator, the capacitive coupling digital isolator of ISO7220 or ISO7221 model can be adopted.
The utility model embodiment is to the model of each device except doing specified otherwise, and the model of other devices does not limit, as long as can complete the device of above-mentioned functions.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1., for a Direct Transform formula on-Line Voltage monitoring device for battery pack, comprising: direct-flow storage battery group and host computer, is characterized in that,
Described on-Line Voltage monitoring device also comprises: the voltage frequency conversioning circuit be electrically connected with each secondary battery unit in described direct-flow storage battery group, and described voltage frequency conversioning circuit is electrically connected buffer circuit and host computer successively;
The voltage transitions of each secondary battery unit is become frequency signal by described voltage frequency conversioning circuit, and transfers to described buffer circuit; The voltage of each secondary battery unit is simultaneously as the supply voltage of described voltage frequency conversioning circuit;
Described buffer circuit receives described frequency signal, and exports described host computer to; Host computer converts described frequency signal to voltage signal and monitors it.
2. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim 1, it is characterized in that, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of electric capacity, the negative polarity input end of operational amplifier respectively; The other end ground connection of described electric capacity; The positive polarity input end of described operational amplifier connects one end of the second resistance and one end of the 3rd resistance, the other end ground connection of described second resistance respectively; The other end of described first resistance, the other end of described 3rd resistance connect the output terminal of described operational amplifier, and described operational amplifier exports described frequency signal to described buffer circuit.
3. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim 1, it is characterized in that, described voltage frequency conversioning circuit comprises: the first resistance,
One end of described first resistance connects one end of electric capacity, the input end of phase inverter respectively, the other end ground connection of described electric capacity; The output terminal of described phase inverter connects the other end of described first resistance, and the output terminal of described phase inverter exports described frequency signal to described buffer circuit.
4. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim arbitrary in claim 1-3, it is characterized in that, described buffer circuit is optoisolator, magnetic coupling isolator or capacitive coupling digital isolator.
5. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim 4, it is characterized in that, described optoisolator is the optoisolator of 6N138 or 4N25 model.
6. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim 4, it is characterized in that, described magnetic coupling isolator is the magnetic coupling isolator of ADUM1200 model.
7. a kind of Direct Transform formula on-Line Voltage monitoring device for battery pack according to claim 4, it is characterized in that, described capacitive coupling digital isolator is the capacitive coupling digital isolator of ISO7220 or ISO7221 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520379145.7U CN204855622U (en) | 2015-06-03 | 2015-06-03 | A direct transform formula is at line voltage monitoring devices for storage battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520379145.7U CN204855622U (en) | 2015-06-03 | 2015-06-03 | A direct transform formula is at line voltage monitoring devices for storage battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204855622U true CN204855622U (en) | 2015-12-09 |
Family
ID=54746160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520379145.7U Withdrawn - After Issue CN204855622U (en) | 2015-06-03 | 2015-06-03 | A direct transform formula is at line voltage monitoring devices for storage battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204855622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092933A (en) * | 2015-06-03 | 2015-11-25 | 大连市旅顺电力电子设备有限公司 | Direct switch type online voltage monitoring apparatus for storage battery and method thereof |
-
2015
- 2015-06-03 CN CN201520379145.7U patent/CN204855622U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092933A (en) * | 2015-06-03 | 2015-11-25 | 大连市旅顺电力电子设备有限公司 | Direct switch type online voltage monitoring apparatus for storage battery and method thereof |
| CN105092933B (en) * | 2015-06-03 | 2017-12-12 | 大连市旅顺电力电子设备有限公司 | Direct transform on-Line Voltage monitoring device and its method for batteries |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101556295A (en) | Voltage linear isolation detection method and circuit | |
| CN106019160B (en) | A kind of battery management system and detection method of the electric car with AC internal Resistance inspection | |
| CN102854366B (en) | Low current measuring device and low current measuring method in direct-current power distribution and consumption system | |
| CN203688636U (en) | System for detecting voltage of single battery unit of series battery pack | |
| CN104242474A (en) | Mixed type energy storage system and application method | |
| CN201111702Y (en) | Arrester leakage current telemetering device | |
| CN104333107A (en) | Direct-current screen power source device utilizing hybrid power sources | |
| CN201897612U (en) | Device for measuring voltages of two battery packs | |
| CN104678175A (en) | Square-matrix insulation resistance detection system for photovoltaic power generation system | |
| CN101614798A (en) | Polarity detection system of electronic transformer | |
| CN204855622U (en) | A direct transform formula is at line voltage monitoring devices for storage battery | |
| CN204832336U (en) | A it is novel at line voltage monitoring devices for storage battery | |
| CN105262138A (en) | Photovoltaic module optimizer | |
| CN204116575U (en) | A kind of energy-conservation power supply changeover device ageing tester | |
| WO2020147809A1 (en) | Storage battery monitoring system, battery pack, and electric vehicle | |
| CN102778597B (en) | Voltage frequency conversion high voltage isolating circuit for use in voltage measurement in photovoltaic power station | |
| CN202721494U (en) | Transformer station direct current power supply system | |
| CN105092933A (en) | Direct switch type online voltage monitoring apparatus for storage battery and method thereof | |
| CN201892717U (en) | Failure indicating and monitor monitoring device of overhead line | |
| CN105092954A (en) | Novel online voltage monitoring apparatus for storage battery and method thereof | |
| CN210245670U (en) | Battery voltage monitoring device and vehicle | |
| CN204575732U (en) | A kind of electrokinetic cell voltage sampling circuit | |
| CN203933086U (en) | A kind of battery balanced device | |
| CN102692907A (en) | Super capacitor CAN (controller area network) electric modular integrated system | |
| CN203490490U (en) | Intelligent control communication device used for network distribution system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20171212 |