CN205484737U - Power lithium cell cluster voltage detecting appearance - Google Patents
Power lithium cell cluster voltage detecting appearance Download PDFInfo
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- CN205484737U CN205484737U CN201620299608.3U CN201620299608U CN205484737U CN 205484737 U CN205484737 U CN 205484737U CN 201620299608 U CN201620299608 U CN 201620299608U CN 205484737 U CN205484737 U CN 205484737U
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Abstract
The utility model relates to a power lithium cell cluster voltage detecting appearance, including main measuring unit, AD converter, singlechip and display screen, main measuring unit includes analog switch module, difference operation module, resistive voltage divider module and absolute value processing module, the output and difference operation module's the input of analog switch module are connected, and difference operation module's the output and the output of resistive voltage divider module are connected with absolute value processing module's first, two inputs respectively, and absolute value processing module's the output and the input of AD converter are connected, the output of AD converter is connected with the input of singlechip, and the output and the display screen of singlechip are connected. The utility model discloses the measurement to the total bulk voltage of 17 crosstalk chi and each crosstalk pressure has been realized with 2 high -pressure analog switch to can visual display measured data, and voltage loss rates lowly, and the precision is high, and simple structure is small, convenient and practical.
Description
Technical field
The utility model relates to the string voltage detecting field of electrokinetic cell, specifically a kind of dynamic lithium battery string voltage detecting
Instrument.
Background technology
Along with the mankind's continuous enhancing to environmental protection consciousness, electric motor car industry is developed rapidly, and therefore, electric motor car is used
The exploitation of power battery module is imperative.It is known that the development of electric motor car is a kind of new and high technology, and what electric motor car used
Electrokinetic cell is again to require the highest one in the battery of various applications.In vehicle technology field, in order to full
Afc voltage and the requirement of electric current, dynamic lithium battery is often composed in series by multiple lithium batteries, finds in actual applications, works as power
When a certain series lithium battery in lithium battery breaks down, the output of whole dynamic lithium battery is difficult to reach to use requirement, therefore, has
A kind of battery tester of necessary exploitation, it is possible to measure global voltage and the electricity of every a string battery of whole dynamic lithium battery in real time
Pressure.
At present, known battery tester includes the polytypes such as cell detection and batteries in parallel connection detection, wherein, single
Single battery can only be detected by body battery detecting respectively, and whole Battery pack can be detected by batteries in parallel connection detection simultaneously, but
It is can only be for the battery detecting of parallel connection type；On market, 15 string batteries at most can only be carried out same by existing series-connected cell detector
Time detection, and it is low to there is precision, and volume is big, baroque defect.
Therefore, the defect existed in view of above-mentioned existing battery tester, the present inventor is based on being engaged in this type of product design system
Make rich experience and professional knowledge for many years, the most in addition research and innovation, found a kind of new dynamic lithium battery string voltage inspection
Survey instrument, the dividing potential drop of 17 strings and the total voltage of above series-connected cell and each string battery can be detected simultaneously, and volume is little, structure
Simply, it is possible to meet high voltage and high-precision measurement requirement.
Summary of the invention
The purpose of this utility model is to provide a kind of dynamic lithium battery string Voltage detector, real with 2 high voltage analog switches
Showed the total voltage of 17 string batteries and each measurement going here and there battery voltage divider, and can intuitively show measurement data and measurement maximum and
Minimum of a value, very clear can see pressure reduction, and loss of voltage rate is low, precision is high, and simple in construction, volume is little, convenient and practical.
The purpose of this utility model and solve it and technical problem is that and realize by the following technical solutions.
According to a kind of dynamic lithium battery string Voltage detector that the utility model proposes, wherein, including main measuring unit, A/
D converter, single-chip microcomputer and display screen；
Described main measuring unit includes that analog switch module, calculus of differences module, electric resistance partial pressure module and absolute value process
Module；
The output of described analog switch module is connected with the input of calculus of differences module, the output of calculus of differences module
The output of end and electric resistance partial pressure module is connected with first and second input of absolute value processing module, at described absolute value respectively
The output of reason module is connected with the input of A/D converter；
The output of described A/D converter is connected with the input of single-chip microcomputer, and the output of single-chip microcomputer is connected with display screen.
The purpose of this utility model and solve its technical problem and also can be applied to the following technical measures to achieve further.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described detector also includes CAN communication module, institute
State CAN communication module to be connected with the output of single-chip microcomputer.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described analog switch module includes analog switch U1
With analog switch U2.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described analog switch module and electric resistance partial pressure module
Input be connected with battery module.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described battery module at least includes 17 string batteries.
Aforesaid a kind of dynamic lithium battery string Voltage detector, described battery module includes 17 string batteries, and wherein, simulation is opened
Closing U1 and analog switch U2 to gate 15 string batteries therein, 2 string batteries therein are gated by electric resistance partial pressure module.
Aforesaid a kind of dynamic lithium battery string Voltage detector, described battery module includes 17 string batteries, and wherein, simulation is opened
Close U1 the 3rd, 5,7,9,11,13,15,17 road string batteries are gated；Analog switch U2 to the 4th, 6,8,10,12,14,16 tunnels
String battery gates.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described A/D converter uses MAX1166, described mould
Intend switch U1 and analog switch U2 and all use MAX14752.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described single-chip microcomputer uses PIC18F45K80.
Aforesaid a kind of dynamic lithium battery string Voltage detector, wherein, described display screen uses 7 cun of LCDs.
The utility model compared with prior art has clear advantage and beneficial effect, by technique scheme, this
Utility model a kind of dynamic lithium battery string Voltage detector can reach suitable technological progress and practicality, and has in industry
Extensive value, it at least has the advantage that
(1), the utility model use 2 high voltage analog switches achieve 17 series lithium batteries are measured simultaneously global voltage and
Each string battery component voltage, without voltage division processing, loss of voltage rate is low, and certainty of measurement is high.
(2), the utility model use 7 cun of LCDs, with numeral and block diagram two ways show measurement data, can
The directly perceived size cases showing each string voltage and maximum voltage value, minimum amount of voltage that and pressure reduction, it is possible to very clear present appearance
The string battery of abnormal conditions.
(3), conventional way be: with analog switch U1, the 1st, 3,5,7,9,11,13,15 roads string batteries are gated,
With analog switch U2, the 2nd, 4,6,8,10,12,14 road string batteries are gated, the 16th, 17 string batteries are then carried out high pressure
Processing, do so causes cost to be significantly increased.Technology of the present utility model is then possible not only to measure each string voltage, Er Qiecheng simultaneously
This is low, simple in construction, and volume is little, and it is convenient to measure, and greatly improves measurement efficiency, thus is suitable for large-scale production, meets into
This benefit, has the value in industry, is suitable to industrial circle and is widely popularized use.
In sum, the utility model one dynamic lithium battery string Voltage detector has the most progressive technically, and
There is obvious good effect, be really a new and innovative, progressive, practical new design.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and can be practiced according to the content of specification, and in order to allow above and other purpose of the present utility model, feature
Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the program flow diagram that the utility model is measured.
[main element symbol description]
1: main measuring unit 2: analog switch module
3: battery module
Detailed description of the invention
By further illustrating the technological means and effect that the utility model taked by reaching predetermined goal of the invention, below
In conjunction with accompanying drawing and preferred embodiment, to according to a kind of dynamic lithium battery string Voltage detector that the utility model proposes, it is concrete
Embodiment, structure, feature and effect thereof, after describing in detail such as.
A kind of dynamic lithium battery string Voltage detector, including main measuring unit, A/D converter, single-chip microcomputer and display screen；Institute
State main measuring unit and include analog switch module, calculus of differences module, electric resistance partial pressure module and absolute value processing module；Described mould
The output intending switch module is connected with the input of calculus of differences module, the output of calculus of differences module and electric resistance partial pressure mould
The output of block is connected with first and second input of absolute value processing module respectively, the output of described absolute value processing module
It is connected with the input of A/D converter；The output of described A/D converter is connected with the input of single-chip microcomputer, single-chip microcomputer defeated
Go out end to be connected with display screen.
Described analog switch module includes two high voltage analog switches, respectively analog switch U1 and analog switch U2.Electricity
Pond module is connected with analog switch U1 and analog switch U2 and electric resistance partial pressure module, and described battery module includes 17 series lithium battery strings
Connection connects, and 15 series lithium batteries therein are gated by analog switch module, and after calculus of differences and absolute value process, A/D is arrived in output
Converter；Other 2 series lithium batteries are gated by electric resistance partial pressure module, and after absolute value processes, output is changed to A/D converter, A/D
Signal after conversion is exported single-chip microcomputer by device, is then passed through display screen display measurement result.
Detector of the present utility model also includes CAN communication module, if the lithium battery that battery module comprises is more than 17 strings, then
CAN communication module can be added, measured by CAN cascade.Described CAN communication module connects with the output of single-chip microcomputer
Connect.
Above-mentioned dynamic lithium battery string Voltage detector, described A/D converter selects MAX1166 (16 in high precision).?
In native system, owing to the common-mode voltage at serial lithium battery Battery pack two ends is higher, beyond the work model of common simulation switch
Enclosing, analog switch U1 the most of the present utility model and analog switch U2 all selects MAX14752, and wherein the parameter of MAX14752 is:
8 select 1 multiplexer, ceiling voltage 72V, maximum conducting resistance 120 ohm, and under cut-off state, leakage current is less than 20nA, work
Electric current 600uA.
PIC18F45K80 selected by described single-chip microcomputer, and the language of single-chip microcomputer uses C programming language.
Display screen of the present utility model uses 7 cun of LCDs, can show measurement data in two ways, point
Do not show for numerical monitor and block diagram.Measurement data can the most specifically be presented by numerical monitor, and at display interface
Lower right corner display maximum voltage value, minimum amount of voltage that and the concrete numerical value of pressure reduction.Block diagram can demonstrate voltage intuitively
Size cases, presents string battery abnormal conditions occur at a glance, thus makes corresponding solution.
Table 1 below. be one of measurement result of the present utility model:
Table 1.
| Passage | Cell voltage | Measure voltage | Deviation |
| U1 | 3.95 | 3.963 | 0.013 |
| U2 | 4.0343 | 4.05 | 0.0157 |
| U3 | 3.979 | 3.992 | 0.013 |
| U4 | 4.0619 | 4.056 | 0.0141 |
| U5 | 4.0383 | 4.037 | 0.0187 |
| U6 | 4.0324 | 4.051 | 0.0186 |
| U7 | 4.0346 | 4.046 | 0.0114 |
| U8 | 4.099 | 4.114 | 0.015 |
| U9 | 4.1186 | 4.119 | 0.0104 |
| U10 | 4.105 | 4.113 | 0.008 |
| U11 | 4.098 | 4.108 | 0.01 |
| U12 | 4.107 | 4.118 | 0.011 |
| U13 | 4.106 | 4.123 | 0.017 |
| U14 | 4.1037 | 4.104 | 0.0103 |
| U15 | 4.094 | 4.106 | 0.012 |
| U16 | 4.096 | 4.079 | -0.017 |
| U17 | 4.0997 | 4.096 | -0.0037 |
The measurement result of upper table shows, dynamic lithium battery string Voltage detector certainty of measurement of the present utility model is high, meets
High voltage, high-precision measurement requirement, it is possible to detection string voltage more truely and accurately, have more preferable Detection results, and survey
Amount efficiency is high, thus more has practicality, is suitable to be widely popularized use.
The above, be only preferred embodiment of the present utility model, not the utility model is made any in form
Restriction, although the utility model is disclosed above with preferred embodiment, but is not limited to the utility model, any ripe
Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above
Hold and make a little change or be modified to the Equivalent embodiments of equivalent variations, as long as without departing from technical solutions of the utility model
Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, the most still
Belong in the range of technical solutions of the utility model.
Claims (10)
1. a dynamic lithium battery string Voltage detector, it is characterised in that it includes main measuring unit, A/D converter, single-chip microcomputer
And display screen；
Described main measuring unit includes analog switch module, calculus of differences module, electric resistance partial pressure module and absolute value processing module；
The output of described analog switch module is connected with the input of calculus of differences module, calculus of differences module and electric resistance partial pressure
The output of module is connected with first and second input of absolute value processing module respectively, the output of described absolute value processing module
End is connected with the input of A/D converter；
The output of described A/D converter is connected with the input of single-chip microcomputer, and the output of single-chip microcomputer is connected with display screen.
2. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that also include CAN communication module, institute
State CAN communication module to be connected with the output of single-chip microcomputer.
3. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that described analog switch module includes
Analog switch U1 and analog switch U2.
4. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that described analog switch module and electricity
The input of resistance division module is connected with battery module.
5. dynamic lithium battery string Voltage detector as claimed in claim 4, it is characterised in that described battery module at least includes
17 string batteries.
6. dynamic lithium battery string Voltage detector as claimed in claim 4, it is characterised in that described battery module includes 17 strings
Battery, wherein, 15 string batteries therein are gated by analog switch U1 and analog switch U2, and electric resistance partial pressure module is to therein
2 string batteries gate.
7. dynamic lithium battery string Voltage detector as claimed in claim 4, it is characterised in that described battery module includes 17 strings
Battery, wherein, the 3rd, 5,7,9,11,13,15,17 road string batteries are gated by analog switch U1；Analog switch U2 to the 4th,
6,8,10,12,14,16 road string batteries gate.
8. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that described A/D converter uses
MAX1166, described analog switch U1 and analog switch U2 all use MAX14752.
9. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that described single-chip microcomputer uses
PIC18F45K80。
10. dynamic lithium battery string Voltage detector as claimed in claim 1, it is characterised in that described display screen uses 7 cun of liquid
Crystal display screen.
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| CN201620299608.3U CN205484737U (en) | 2016-04-12 | 2016-04-12 | Power lithium cell cluster voltage detecting appearance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866694A (en) * | 2016-04-12 | 2016-08-17 | 洛阳鑫光锂电科技有限公司 | Power lithium battery series voltage detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866694A (en) * | 2016-04-12 | 2016-08-17 | 洛阳鑫光锂电科技有限公司 | Power lithium battery series voltage detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210816 Address after: 471000 room 607, building 50, yard 8, Stadium Road, Xigong District, Luoyang City, Henan Province Patentee after: Cao Guangming Address before: 471003 6th floor, block D, torch Park, Yanguang Road, high tech Development Zone, Luoyang, Henan Patentee before: LUOYANG XINGUANG LITHIUM TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right |