CN103852650B - Super capacitor detection method and device - Google Patents
Super capacitor detection method and device Download PDFInfo
- Publication number
- CN103852650B CN103852650B CN201210495542.1A CN201210495542A CN103852650B CN 103852650 B CN103852650 B CN 103852650B CN 201210495542 A CN201210495542 A CN 201210495542A CN 103852650 B CN103852650 B CN 103852650B
- Authority
- CN
- China
- Prior art keywords
- capacitance
- voltage
- value
- super capacitor
- capacitance voltage
- 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.)
- Active
Links
Abstract
The present invention provides a kind of super capacitor detection method and device, wherein, method includes：During constant pressure source is charged by charging circuit to super capacitor to be measured, multiple repairing weld is carried out to the voltage of the super capacitor to be measured according to the capacitance voltage sampling period, multiple capacitance voltage sampled values are obtained；According to the multiple capacitance voltage sampled value and electric capacity calculation formula, calculate and obtain multiple capacitor's capacities；Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is the constant source voltage value in n-th of capacitance voltage sampling period, UCThe capacitance voltage sampled value that (n 1) obtains for the n-th 1 capacitance voltage sampling periods, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；According to the capacitance threshold value of the multiple capacitor's capacity and the super capacitor to be measured, judge whether the super capacitor to be measured damages.
Description
Technical field
The present invention relates to capacitance measurement technique field, more particularly to a kind of super capacitor detection method and device.
Background technology
Super capacitor, is a kind of new energy storage device grown up the 1970s and 1980s in last century, because it has remarkably
High current fast charging and discharging performance, high power density and wider operating temperature range etc. repeatedly, possess widely
Purposes, is that huge impetus is played in the development of energy storage industry.
In wind power generation field, super capacitor as paddle change system of wind turbines back-up source, in fan trouble or
Energy is provided for the feathering of pitch-controlled system in the case of electric network power-fail, so as to avoid caused by Wind turbines running speed is out of control
Major accident.Therefore, whether detection super capacitor damages particularly important, wherein, more universal detection method is super by detection
The capacitance of level electric capacity detects whether super capacitor damages.
In the existing scheme detected to super capacitor capacitance, if providing the constant pressure source electricity of charge power supply in charging circuit
Charging resistor in pressure value and the charging circuit is, it is known that and capacitance voltage and charging knot by sampling during acquisition charging starting
Capacitance voltage during beam, and charging interval t, it is possible to the capacitance of super capacitor is calculated according to electric capacity calculation formula, but should
The accuracy for the capacitor's capacity that scheme is obtained is poor, so that cause the testing result whether damaged on super capacitor inaccurate,
But, if above-mentioned charging, the process of sampling are performed a plurality of times to improve accuracy, it can take a substantial amount of time and the energy.
The content of the invention
The present invention provides a kind of super capacitor detection method and device, for solving existing whether to damage super capacitor
The problem of detection accuracy is poor.
The first aspect of the invention is to provide a kind of super capacitor detection method, including：
During being charged by constant pressure source and charging circuit to super capacitor to be measured, sampled according to capacitance voltage
Cycle carries out multiple repairing weld to the voltage of the super capacitor to be measured, obtains multiple capacitance voltage sampled values；
According to the multiple capacitance voltage sampled value and electric capacity calculation formula：Calculating is obtained
Obtain multiple capacitor's capacities；
Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th
The constant source voltage value in capacitance voltage sampling period, UC(n-1) capacitance voltage obtained for (n-1)th capacitance voltage sampling period
Sampled value, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；
According to the capacitance threshold value of the multiple capacitor's capacity and the super capacitor to be measured, the super capacitor to be measured is judged
Whether damage.
Another aspect of the present invention is to provide a kind of super capacitor detection means, including：
Capacitance voltage sampling module, in the mistake charged by constant pressure source and charging circuit to super capacitor to be measured
Cheng Zhong, multiple repairing weld is carried out according to the capacitance voltage sampling period to the voltage of the super capacitor to be measured, obtains multiple electric capacity electricity
Press sampled value；
Capacitance voltage processing module, for according to the multiple capacitance voltage sampled value and electric capacity calculation formula：Calculate and obtain multiple capacitor's capacities；
Wherein, t is the sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th of capacitance voltage
The constant source voltage value in sampling period, UC(n-1) the capacitance voltage sampled value obtained for (n-1)th capacitance voltage sampling period, UC
(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；
Capacitive detection module, for the capacitance threshold value according to the multiple capacitor's capacity and the super capacitor to be measured, sentences
Whether the super capacitor to be measured that breaks damages.
The super capacitor detection method and device that the present invention is provided in single super capacitor charging process by repeatedly adopting
Sample, makes the capacitor's capacity of acquisition more accurate, improves the accuracy and reliability of detection super capacitor, while not increasing extra
Time and power consumption.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet for super capacitor detection method that the embodiment of the present invention one is provided；
Fig. 2 be the embodiment of the present invention in be applied to Fan Equipment super capacitor charge-discharge circuit schematic diagram；
Fig. 3 is a kind of schematic flow sheet for super capacitor detection method that the embodiment of the present invention two is provided；
Fig. 4 is a kind of structural representation for super capacitor detection means that the embodiment of the present invention three is provided；
Fig. 5 is a kind of structural representation for super capacitor detection means that the embodiment of the present invention four is provided.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.
Fig. 1 is a kind of schematic flow sheet for super capacitor detection method that the embodiment of the present invention one is provided, as shown in figure 1,
Methods described includes：
101st, during being charged by constant pressure source and charging circuit to super capacitor to be measured, according to capacitance voltage
Sampling period carries out multiple repairing weld to the voltage of the super capacitor to be measured, obtains multiple capacitance voltage sampled values.
Wherein, the charging circuit, i.e., the charge circuit of described super capacitor to be measured, is connected, the constant pressure with constant pressure source
Source is provided to the power supply needed for the super capacitor charging to be measured.Optionally, the constant pressure source can be the electric group of blower fan（Following letter
Claim blower fan）In equipment, the DC bus-bar voltage of power supply is provided for the frequency converter of the Fan Equipment, the DC bus-bar voltage leads to
Cross ac bus voltage conversion to obtain, specifically, can be changed by rectification module and electrochemical capacitor, what is be converted to is straight
The voltage pulsation for flowing busbar voltage is very small, can be approximately a constant pressure source.
Fig. 2 is is applied to the charge-discharge circuit schematic diagram of the super capacitor of Fan Equipment in the embodiment of the present invention, such as Fig. 2 institutes
Show, the charge-discharge circuit includes：Three-phase uncontrollable rectifier module 21, electrochemical capacitor C1, switch 22, charging resistor R, diode D,
Frequency converter 23, motor 24 and super capacitor C to be measured, wherein, three-phase uncontrollable rectifier module 21 and electrochemical capacitor C1 are used for by described in
Ac bus voltage conversion is DC bus-bar voltage；Frequency converter 23 is used to the DC bus-bar voltage being converted to alternating voltage,
So as to which motor 24 works, optionally, frequency converter 23 can be also used for obtaining capacitance voltage sampled value；Motor 24 is used to make wind
Machine feathering；Charging resistor R plays metering function, so as to prevent the electric current excessive life-span for causing super capacitor C to be measured from reducing.Wherein,
When switch 22 is closed, charging resistor R and super capacitor C to be measured constitute charge circuit.
The principle of the charge-discharge circuit is：Closure switch 22, now, make motor 24 not work, to reduce it to direct current
The influence of busbar voltage, so as to reduce the voltage pulsation of the DC bus-bar voltage, it is more approximately a constant pressure source that can make it,
Charged for super capacitor C to be measured；After charging complete, switch 22 is disconnected, to reduce power consumption, now, motor 24 can be at work shape
State.When Fan Equipment normal work, frequency converter 23 is powered by the power network of Fan Equipment, break down when the Fan Equipment or
When the power network can not power, there is positive electrical potential difference in diode D two ends, realize conducting, and super capacitor C to be measured is to frequency converter 23
Power supply, so that motor 24 works, realizes blower fan feathering.
Optionally, the capacitance voltage sampling period rule of thumb can determine with ability in sampling, for example, the capacitance voltage
Sampling period is 30 seconds（s）, the present embodiment is not limited herein, and the capacitance voltage sampling period can be based on compiling
Journey logic controller（Programmable Logic Controller, hereinafter referred to as PLC）Software programming, pass through timer
Realize.
Specifically, the voltage to the super capacitor to be measured carries out multiple repairing weld, its specific sampling number is that is, pre-
If capacitance voltage sampling number, rule of thumb it can be determined with ability in sampling, for example, taking the predetermined capacitive voltage sample number of times to be
6 times, the present embodiment is not limited herein.
As a kind of optional embodiment of the present embodiment, the voltage of the super capacitor to be measured is entered described in 101
After row multiple repairing weld, it can also include：Low-pass filtering treatment is carried out to the multiple capacitance voltage sampled value；It is corresponding, 102
It is middle according to the multiple capacitance voltage sampled value and electric capacity calculation formula, it is specially according to low pass to calculate and obtain multiple capacitor's capacities
The multiple capacitance voltage sampled value and electric capacity calculation formula after filtering process, calculate and obtain multiple capacitor's capacities.This implementation
Mode can filter out the multiple capacitance voltage sampled value due to sampled value caused by interference constant source voltage that may be present
Deviation, the degree of accuracy of the capacitance voltage sampled value is improved, so as to improve the degree of accuracy of super capacitor detection.
102nd, according to the multiple capacitance voltage sampled value and electric capacity calculation formula, calculate and obtain multiple capacitor's capacities.
The electric capacity calculation formula is as follows：
N is the integer more than 0；
Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th
The constant source voltage value in capacitance voltage sampling period, UC(n-1) capacitance voltage obtained for (n-1)th capacitance voltage sampling period
Sampled value, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period.
Optionally, UDC(n) the specification voltage value for the constant pressure source being connected with the charging circuit can be directly taken, can also be passed through
Sampling is obtained, and the present embodiment is not limited herein.
It is used as a kind of optional embodiment of the present embodiment, the UDC(n) obtained by sampling, be specially：In n-th of electricity
Hold in voltage sample period, multiple repairing weld is carried out to the voltage of the constant pressure source according to the constant source voltage sampling period, obtained many
Individual constant source voltage sampled value；Average value processing is carried out to the multiple constant source voltage sampled value, n-th of the electric capacity electricity is obtained
Press the constant source voltage value U in sampling periodDC(n)。
Wherein, the voltage to the super capacitor to be measured carries out multiple repairing weld, and its specific sampling number is preset
Constant source voltage sampling number, rule of thumb can be determined with ability in sampling, for example, taking the default constant source voltage sampling number
For 6 times, the present embodiment is not limited herein.Specifically, in the super capacitor charge/discharge applied to Fan Equipment
In, the constant source voltage sampled value can be obtained by frequency converter measurement.
Specifically, the constant source voltage sampling period can sample according to the constant source voltage, residing capacitance voltage is adopted
Sample cycle and ability in sampling determine that the constant source voltage sampling period should be not more than the residing electricity of the constant source voltage sampling
Hold voltage sample period, for example, the constant source voltage sampling residing capacitance voltage sampling period is 30s, the constant pressure source
Voltage sample period is 5s, and the present embodiment is not limited herein, and the constant source voltage sampling period may be based on
PLC software programming, is realized by timer.Further, the default constant source voltage sampling number can be according to described
Constant source voltage sampling period and the residing capacitance voltage sampling period determination of constant source voltage sampling, i.e., described constant pressure source
The product value of voltage sample period and the default constant source voltage sampling number should be not more than the constant source voltage sampling institute
The capacitance voltage sampling period at place.For example, the capacitance voltage sampling for sampling residing according to the constant source voltage of the example above
Cycle and the constant source voltage sampling period, the default constant source voltage sampling period can be 6 times.
Optionally, the voltage to the constant pressure source carries out multiple repairing weld, can select at least one capacitance voltage
Carried out in sampling period.For example, repeatedly being adopted to the voltage of the constant pressure source within any one capacitance voltage sampling period
Sample, corresponding, the constant source voltage value that will be obtained in the capacitance voltage sampling period for having carried out constant source voltage sampling, is used as it
He does not carry out the constant source voltage value in the capacitance voltage cycle of constant source voltage sampling；Optionally, in any number of capacitance voltages
Multiple repairing weld is carried out to the voltage of the constant pressure source in sampling period, it is corresponding, the electric capacity of constant source voltage sampling will be carried out
Any constant source voltage value in the constant source voltage value obtained in voltage sample period, constant source voltage is not carried out as other
The constant source voltage value in the capacitance voltage cycle of sampling；Optionally, to the constant pressure within each capacitance voltage sampling period
The voltage in source carries out multiple repairing weld, corresponding, will be obtained in each capacitance voltage sampling period for having carried out constant source voltage sampling
Constant source voltage value as the constant source voltage value in its corresponding each capacitance voltage sampling period, the present embodiment is right herein
It is limited.
Optionally, after the voltage to the constant pressure source carries out multiple repairing weld, it can also include：To the multiple
Constant source voltage sampled value carries out low-pass filtering treatment；It is corresponding, it is described that the multiple constant source voltage sampled value is carried out
Value processing to the multiple constant source voltage sampled value after low-pass filtering treatment specifically, carry out average value processing.This embodiment party
Formula can filter out the multiple constant source voltage sampled value due to sampled value caused by interference constant source voltage that may be present
Deviation, the degree of accuracy of the constant source voltage sampled value is improved, so as to improve the degree of accuracy of super capacitor detection.
Wherein, the average value processing can be realized by possessing the device of average value processing function, for example, by PLC to institute
State multiple constant source voltage sampled values and carry out average value processing.
Present embodiment is by the capacitance voltage sampling period, carrying out multiple repairing weld to the voltage of constant pressure source and it being adopted
Sample value carries out average value processing and obtains more accurate constant source voltage value, so that the result of calculation of capacitor's capacity is more accurate,
And then more efficiently improve accuracy and reliability that whether detection super capacitor damages.
Specifically, the multiple capacitor's capacities of acquisition that calculate can be to calculate acquisition by possessing the equipment of computing function
Multiple capacitor's capacities, for example, each sampled value obtained by frequency converter is transferred into PLC, is calculated by PLC and obtain multiple electric capacity
Capacitance, the present embodiment is not limited herein, wherein, each sampled value of acquisition can be passed through controller local by frequency converter
Network（Controller Area Network, abbreviation CAN）Bus transfer is to PLC.
Specifically, when the n takes 1, the capacitance voltage sampled value U that with respect to first capacitance voltage sampling period obtainsC
(n) for, the capacitance voltage sampled value U that its corresponding (n-1)th capacitance voltage sampling period obtainsC(n-1) it is initial capacitance
Magnitude of voltage UC(0), the initial capacitance magnitude of voltage is entered by the initial time in charging to the voltage of the super capacitor to be measured
Row sampling is obtained.
For example, sampled when by the voltage to the super capacitor to be measured, obtain 6 capacitance voltage sampled values
When, 6 capacitance voltage sampled values do not include initial capacitance magnitude of voltage, are obtained according to first capacitance voltage sampling period
Capacitance voltage sampled value and the initial capacitance magnitude of voltage, obtain a capacitor's capacity；According to second capacitance voltage sampling week
The capacitance voltage sampled value that the capacitance voltage sampled value and first capacitance voltage sampling period that phase obtains are obtained, obtains the
Two capacitor's capacities, by that analogy, can obtain 6 capacitor's capacities altogether.
103rd, according to the capacitance threshold value of the multiple capacitor's capacity and the super capacitor to be measured, judge described to be measured super
Whether electric capacity damages.
Wherein, the capacitance threshold value is determined according to the specification capacitance of limit value and the super capacitor to be measured, for example, described
The specification capacitance of super capacitor to be measured is 2 farads（F）, the limit value takes 80%, then the capacitance threshold value is described to be measured super
The 80% of the specification capacitance of electric capacity, i.e., described capacitance threshold value is 1.6F, and the present embodiment is not limited herein.
Judge whether the super capacitor to be measured damages specially specifically, described：If less than the electricity of the capacitance threshold value
Hold ratio of the number of capacitance shared by the total number of the capacitor's capacity and be more than or equal to setting value, then judge described to be measured
Super capacitor is damaged；Otherwise judge that the super capacitor to be measured is not damaged.
Optionally, the setting value is rule of thumb determined with work requirements, for example, taking the setting value to be 50%, if then small
It is more than or waits in the number of the capacitor's capacity of capacitance threshold value ratio shared in the total number of the multiple capacitor's capacity
In 50%, then judge that the super capacitor to be measured is damaged；Otherwise judge that the super capacitor to be measured is not damaged, the present embodiment is herein
It is not limited.As an example it is assumed that setting value is 50%, capacitance threshold value is the capacitance threshold value described in the example above, i.e.,
For 1.6F, if one is obtained 6 capacitor's capacities, respectively 1.1F, 1.2F, 1.3F, 1.6F, 1.7F and 1.7F are then wherein less than
The number of the capacitor's capacity of capacitance threshold value is 3, then the number of the capacitor's capacity less than the capacitance threshold value is described more
Shared ratio is 50% in the total number of individual capacitor's capacity, i.e., equal to setting value 50%, therefore, it is determined that the super capacitor to be measured
Damage；It is opposite, if one is obtained 6 capacitor's capacities, respectively 1.3F, 1.4F, 1.6F, 1.7F, 1.7F and 1.8F, then wherein
Number less than the capacitor's capacity of capacitance threshold value is 2, then the number of the capacitor's capacity less than the capacitance threshold value is in institute
It is about 34% to state ratio shared in the total number of multiple capacitor's capacities, i.e., less than setting value 50%, therefore, it is determined that described to be measured super
Level electric capacity is not damaged.
The present embodiment is by according to the multiple sampled values obtained in single super capacitor charging process, calculating super capacitor
Capacitor's capacity technical scheme, realize accurate, the effective detection, in technical scheme letter that whether damages super capacitor progress
Folk prescription just on the basis of, more efficiently improve super capacitor detection accuracy.
Fig. 3 is a kind of schematic flow sheet for super capacitor detection method that the embodiment of the present invention two is provided, as shown in figure 3,
Methods described includes：
301st, initialize；
302nd, the initial capacitance magnitude of voltage of super capacitor to be measured is obtained；
303rd, opening timing device, timing；
304th, whether then to judge timer, if so, then performing 305, otherwise, then return and perform 304；
305th, the voltage of constant pressure source is sampled, and constant source voltage sampling number is added 1；
306th, judge whether constant source voltage sampling number reaches default constant source voltage sampling number, if so, then performing
307, otherwise, perform 317；
307th, timer is resetted, constant source voltage sampling number is reset；
308th, the voltage of super capacitor to be measured is sampled, obtains the capacitance voltage sampling in this capacitance voltage sampling period
Value；
309th, multiple constant source voltage sampled values of acquisition are subjected to average value processing, obtain this capacitance voltage sampling period
Constant source voltage value；
310th, calculate and obtain capacitor's capacity；
311st, capacitance voltage sampling number is added 1；
312nd, judge whether capacitance voltage sampling number reaches predetermined capacitive voltage sample number of times, if so, 313 are then performed,
Otherwise, 317 are performed；
313rd, the number for the capacitor's capacity for being less than capacitance threshold value ratio shared in the total number of the capacitor's capacity is obtained
Example；
314th, judge whether the ratio is more than or equal to setting value, if so, then performing 315, otherwise perform 316；
315th, judge that the super capacitor to be measured is damaged；
316th, judge that the super capacitor to be measured is not damaged；
317th, timer is resetted, and returns to execution 303.
Wherein, the initialization is specifically included：The predetermined capacitive voltage sample number of times is set as 6 times, the electric capacity electricity
The pressure sampling period is 30s, and the default constant source voltage sampling number is 6 times, and the constant source voltage sampling period is 5s, fixed
When the device cycle be the constant source voltage sampling period, as 5s；By capacitance voltage sampling number and constant source voltage sampling time
Number is initialized as zero.
Optionally, before 313, capacitance voltage sampling number can also be reset.
In the present embodiment, multiple repairing weld is carried out specially in each capacitance voltage sampling period to the voltage of the constant pressure source
Multiple repairing weld inside is carried out to the voltage of constant pressure source, and corresponding each capacitance voltage sampling period is obtained by average value processing
Constant source voltage value, the constant source voltage value in each capacitance voltage sampling period can be improved by above-mentioned embodiment
Accuracy, so as to obtain more accurate capacitor's capacity, improves the accuracy of super capacitor detection.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Fig. 4 is a kind of structural representation for super capacitor detection means that the embodiment of the present invention three is provided, as shown in figure 4,
Described device includes：
Capacitance voltage sampling module 41, for being charged to super capacitor to be measured by constant pressure source and charging circuit
During, multiple repairing weld is carried out to the voltage of the super capacitor to be measured according to the capacitance voltage sampling period, multiple electric capacity are obtained
Voltage sample value；
Capacitance voltage processing module 42, for according to the multiple capacitance voltage sampled value and electric capacity calculation formula：
Calculate and obtain multiple capacitor's capacities；
Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th
The constant source voltage value in capacitance voltage sampling period, UC(n-1) capacitance voltage obtained for (n-1)th capacitance voltage sampling period
Sampled value, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；
Capacitive detection module 43, for the capacitance threshold value according to the multiple capacitor's capacity and the super capacitor to be measured,
Judge whether the super capacitor to be measured damages.
The super capacitor detection means that the present embodiment is provided, in super capacitor charging process, is sampled by capacitance voltage
Module repeatedly obtains capacitance voltage sampled value, and by capacitance voltage processing module, calculates the skill of the capacitor's capacity of super capacitor
Art scheme, realizes accurate, the effective detection that whether damages super capacitor progress, in above-mentioned technical proposal simply and easily base
On plinth, the accuracy of super capacitor detection is more effectively improved.
Optionally, described device can also include：Constant pressure source sampling module, for n-th of capacitance voltage sampling period
It is interior, multiple repairing weld is carried out to the voltage of the constant pressure source according to the constant source voltage sampling period, multiple constant source voltages is obtained and adopts
Sample value；Constant pressure source processing module, for carrying out average value processing to the multiple constant source voltage sampled value, is obtained described n-th
The constant source voltage value U in capacitance voltage sampling periodDC(n)。
The super capacitor detection means that present embodiment is provided, is existed by constant pressure source sampling module and constant pressure source processing module
Multiple repairing weld and average value processing are carried out respectively to the voltage of constant pressure source in the capacitance voltage sampling period, more accurate constant pressure is obtained
Source magnitude of voltage, so that the result of calculation of the capacitor's capacity of super capacitor is more accurate, and then more efficiently improves detection
Accuracy and reliability that whether super capacitor damages.
Optionally, described device can also include：Constant pressure source filtration module, for being sampled to the multiple constant source voltage
Value carries out low-pass filtering treatment, and corresponding, the constant pressure source processing module is specifically for described more after low-pass filtering treatment
Individual constant source voltage sampled value carries out average value processing, obtains the constant source voltage value U in n-th of capacitance voltage sampling periodDC
(n)；Capacitance voltage filtration module, for carrying out low-pass filtering treatment, corresponding, electric capacity to the multiple capacitance voltage sampled value
Voltage processing module 42 according to the multiple capacitance voltage sampled value after low-pass filtering treatment and electric capacity specifically for calculating public
Formula, calculates and obtains multiple capacitor's capacities.
The super capacitor detection means that present embodiment is provided, constant source voltage can be filtered out by low-pass filtering module
Sampled value and capacitance voltage sampled value improve the standard of sampled value due to the deviation of sampled value caused by interference voltage that may be present
Exactness, so as to improve the degree of accuracy of super capacitor detection.
Fig. 5 is a kind of structural representation for super capacitor detection means that the embodiment of the present invention four is provided, as shown in figure 5,
Super capacitor detection means according to Fig. 4, capacitive detection module 43 is specifically included：
Computing unit 51, total number of the number in the capacitor's capacity for calculating the capacitor's capacity less than capacitance threshold value
In shared ratio；
Identifying unit 52, if the number for the capacitor's capacity less than the capacitance threshold value is in the total individual of the capacitor's capacity
Shared ratio is more than or equal to setting value in number, then judges that the super capacitor to be measured is damaged；Otherwise judge described to be measured super
Level electric capacity is not damaged.
The super capacitor detection method and device that above-described embodiment is provided, realize and whether damage super capacitor progress standard
Really, effective detection, on the basis of technical scheme is simple and convenient, more effectively improves the accuracy of super capacitor detection.
And said apparatus is the step of can realize the super capacitor detection method that any embodiment of the present invention is provided, its specific steps is herein not
Repeat again.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of super capacitor detection method, it is characterised in that including：
During single charge is carried out to super capacitor to be measured by constant pressure source and charging circuit, sampled according to capacitance voltage
Cycle carries out multiple repairing weld to the voltage of the super capacitor to be measured, obtains multiple capacitance voltage sampled values；
According to the multiple capacitance voltage sampled value and electric capacity calculation formula：
Calculate and obtain multiple capacitor's capacities；
Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th of electric capacity
The constant source voltage value of voltage sample period, UC(n-1) the capacitance voltage sampling obtained for (n-1)th capacitance voltage sampling period
Value, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；
According to the capacitance threshold value of the multiple capacitor's capacity and the super capacitor to be measured, whether the super capacitor to be measured is judged
Damage.
2. according to the method described in claim 1, it is characterised in that methods described also includes：
Within n-th of capacitance voltage sampling period, the voltage of the constant pressure source is carried out according to the constant source voltage sampling period many
Secondary sampling, obtains multiple constant source voltage sampled values；
Average value processing is carried out to the multiple constant source voltage sampled value, the perseverance in n-th of capacitance voltage sampling period is obtained
Potential source magnitude of voltage UDC(n)。
3. method according to claim 2, it is characterised in that the voltage to the constant pressure source carries out multiple repairing weld,
After obtaining multiple constant source voltage sampled values, in addition to：The multiple constant source voltage sampled value is carried out at LPF
Reason；It is described to be specially to the multiple constant source voltage sampled value progress average value processing：To described many after low-pass filtering treatment
Individual constant source voltage sampled value carries out average value processing.
4. the method according to any one of claim 1-3, it is characterised in that the electricity to the super capacitor to be measured
Pressure is carried out after multiple repairing weld, the multiple capacitance voltage sampled values of acquisition, in addition to：The multiple capacitance voltage sampled value is carried out
Low-pass filtering treatment；It is described according to the multiple capacitance voltage sampled value and electric capacity calculation formula, calculate and obtain multiple electric capacity and hold
Value is specially：According to the multiple capacitance voltage sampled value and electric capacity calculation formula after low-pass filtering treatment, calculate and obtain many
Individual capacitor's capacity.
5. method according to claim 4, it is characterised in that described according to the multiple capacitor's capacity and described to be measured super
Level electric capacity capacitance threshold value, judge the super capacitor to be measured whether damage including：
If the ratio shared in the total number of the capacitor's capacity less than the number of the capacitor's capacity of the capacitance threshold value is more than
Or equal to setting value, then judge that the super capacitor to be measured is damaged, otherwise judge that the super capacitor to be measured is not damaged.
6. a kind of super capacitor detection means, it is characterised in that including：
Capacitance voltage sampling module, for carrying out the mistake of single charge to super capacitor to be measured by constant pressure source and charging circuit
Cheng Zhong, multiple repairing weld is carried out according to the capacitance voltage sampling period to the voltage of the super capacitor to be measured, obtains multiple electric capacity electricity
Press sampled value；
Capacitance voltage processing module, for according to the multiple capacitance voltage sampled value and electric capacity calculation formula：
Calculate and obtain multiple capacitor's capacities；
Wherein, t is the capacitance voltage sampling period, and R is the resistance of charging resistor in the charging circuit, UDC(n) it is n-th of electric capacity
The constant source voltage value of voltage sample period, UC(n-1) the capacitance voltage sampling obtained for (n-1)th capacitance voltage sampling period
Value, UC(n) the capacitance voltage sampled value obtained for n-th of capacitance voltage sampling period, n is the integer more than 0；
Capacitive detection module, for the capacitance threshold value according to the multiple capacitor's capacity and the super capacitor to be measured, judges institute
State whether super capacitor to be measured damages.
7. device according to claim 6, it is characterised in that described device also includes：
Constant pressure source sampling module, within n-th of capacitance voltage sampling period, according to the constant source voltage sampling period to described
The voltage of constant pressure source carries out multiple repairing weld, obtains multiple constant source voltage sampled values；
Constant pressure source processing module, for carrying out average value processing to the multiple constant source voltage sampled value, obtains n-th of electricity
Hold the constant source voltage value U of voltage sample periodDC(n)。
8. device according to claim 7, it is characterised in that described device also includes：Constant pressure source filtration module, for pair
The multiple constant source voltage sampled value carries out low-pass filtering treatment；The constant pressure source processing module is specifically for low pass filtered
The multiple constant source voltage sampled value after ripple processing carries out average value processing, obtains n-th of capacitance voltage sampling period
Constant source voltage value UDC(n)。
9. the device according to any one of claim 6-8, it is characterised in that described device also includes：Capacitance voltage is filtered
Ripple module, for carrying out low-pass filtering treatment to the multiple capacitance voltage sampled value；The capacitance voltage processing module is specific
For according to the multiple capacitance voltage sampled value and electric capacity calculation formula after low-pass filtering treatment, calculating and obtaining multiple electricity
Hold capacitance.
10. device according to claim 9, it is characterised in that the capacitive detection module includes：
Computing unit, for calculating the number of the capacitor's capacity less than capacitance threshold value in the total number of the multiple capacitor's capacity
Shared ratio；
Identifying unit, if the institute in the total number of the capacitor's capacity of the number for the capacitor's capacity less than the capacitance threshold value
The ratio accounted for is more than or equal to setting value, then judges that the super capacitor to be measured is damaged, otherwise judge the super capacitor to be measured
Do not damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495542.1A CN103852650B (en) | 2012-11-28 | 2012-11-28 | Super capacitor detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495542.1A CN103852650B (en) | 2012-11-28 | 2012-11-28 | Super capacitor detection method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103852650A CN103852650A (en) | 2014-06-11 |
| CN103852650B true CN103852650B (en) | 2017-10-10 |
Family
ID=50860551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210495542.1A Active CN103852650B (en) | 2012-11-28 | 2012-11-28 | Super capacitor detection method and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103852650B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104166052B (en) * | 2014-08-04 | 2017-02-22 | 国家电网公司 | Method for detecting super capacitor capacitance value of wind turbine generator pitch system |
| CN104682521B (en) * | 2015-03-18 | 2017-08-25 | 重庆华渝重工机电有限公司 | Ultracapacitor real-time detecting system and method for variable pitch control system of wind generating |
| CN105242136B (en) * | 2015-09-28 | 2018-07-31 | 北京天诚同创电气有限公司 | Super capacitor detection method and device for wind turbine generator |
| CN108087209B (en) * | 2016-11-23 | 2019-12-20 | 成都阜特科技股份有限公司 | Detection method for super capacitor module of wind generating set |
| CN109900967B (en) * | 2017-12-07 | 2021-01-22 | 北京金风科创风电设备有限公司 | Capacitance value detection method and device of super capacitor and wind generating set |
| CN109212321B (en) * | 2018-08-30 | 2021-01-22 | 北京金风科创风电设备有限公司 | Method and device for detecting capacitance value of super capacitor |
| CN109459628B (en) * | 2018-09-21 | 2021-03-12 | 科德数控股份有限公司 | Device for predicting failure of servo driver |
| CN110187190A (en) * | 2019-05-27 | 2019-08-30 | 许昌许继风电科技有限公司 | The evaluation method and detection system of capacitor box capacitance |
| CN112014646B (en) * | 2019-05-29 | 2023-06-27 | 北京金风科创风电设备有限公司 | Method, device and system for detecting capacitance value of super capacitor |
| CN110646747B (en) * | 2019-10-12 | 2022-06-14 | 中车株洲电力机车有限公司 | Fault detection method and device |
| CN113864133B (en) * | 2020-06-30 | 2022-11-15 | 北京金风科创风电设备有限公司 | Capacitance characteristic detection method and device of super capacitor and variable pitch system |
| CN112710901A (en) * | 2020-12-25 | 2021-04-27 | 深圳市禾望科技有限公司 | Direct current bus capacitance detection circuit and method |
| CN112858792A (en) * | 2021-01-15 | 2021-05-28 | 胜达克半导体科技(上海)有限公司 | Energy storage capacitor failure detection method based on test carrier plate |
| CN113022480B (en) * | 2021-02-04 | 2022-10-25 | 珠海格力电器股份有限公司 | Control method and device of air conditioner, storage medium and processor |
| CN113567754B (en) * | 2021-07-30 | 2023-12-01 | 宁波三星医疗电气股份有限公司 | Super capacitor capacity anomaly detection method |
| CN113589200B (en) * | 2021-07-30 | 2023-12-01 | 宁波三星医疗电气股份有限公司 | Super capacitor connection fault detection method and system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0415564A (en) * | 1990-05-08 | 1992-01-20 | Seiko Epson Corp | Capacitance measuring circuit |
| DE102006019187A1 (en) * | 2006-04-21 | 2007-10-31 | Huf Hülsbeck & Fürst Gmbh & Co. Kg | Method and circuit for measuring a capacitance |
| US7282927B1 (en) * | 2006-06-21 | 2007-10-16 | Eastman Kodak Company | Use of a configurable electronic controller for capacitance measurements and cable break detection |
| CN201057533Y (en) * | 2007-01-30 | 2008-05-07 | 王悦 | Multimeter with accurate capacitance measuring function |
| CN101308176A (en) * | 2008-04-16 | 2008-11-19 | 深圳创维－Rgb电子有限公司 | On-line measurement electrochemical capacitor circuit |
-
2012
- 2012-11-28 CN CN201210495542.1A patent/CN103852650B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103852650A (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103852650B (en) | Super capacitor detection method and device | |
| CN107085187B (en) | Echelon utilizes the determination method and device of battery energy storage system consistency maintenance index | |
| EP2551690B1 (en) | Battery monitoring device | |
| CN106537724A (en) | Charging method, power adapter and mobile terminal | |
| CN104657520B (en) | A kind of fuel cell modelling method based on Large Copacity energy storage lithium ion battery | |
| CN105445558A (en) | Method for detecting DC internal resistance of battery | |
| CN103197256A (en) | State of charge (SOC) estimation method of lithium ion battery | |
| CN105242136A (en) | Super capacitor detection method and device for wind turbine generator | |
| CN107154621A (en) | The virtual synchronous generator control method of direct-current grid energy-storage units DC DC transverters | |
| CN108427092A (en) | A kind of off-board DC charging motor direct current energy meter in-line calibration System and method for of electric vehicle | |
| CN104218602A (en) | Distributed power generation system and island detection device thereof, current converter thereof | |
| CN107643493A (en) | A kind of battery electric quantity predictor method and device, unmanned plane | |
| CN111751752A (en) | Method and device for evaluating state of retired lithium iron phosphate power battery | |
| CN106125008A (en) | The Method for Accurate Calculation of a kind of SOC on-line parameter self-correction and device | |
| CN102290587B (en) | Redox flow cell simulation method and simulator | |
| CN103227561B (en) | Photovoltaic DC-to-AC converter starting drive and method | |
| CN101713799A (en) | Method for distinguishing three-phase alternating current phase sequences | |
| CN202886575U (en) | Device for rapidly detecting performance of power module | |
| CN202661605U (en) | Backup battery capacity detection device of pitch-controlled system | |
| CN106291397B (en) | Ship'ssupply automatic testing equipment and its test method | |
| CN107656213A (en) | The intelligent test method and system of a kind of battery | |
| CN103683383B (en) | A kind of low voltage standby power circuit and method | |
| CN203773028U (en) | Battery performance inspection apparatus | |
| CN105759159A (en) | Wind power plant static var generator (SVG) response time test system of with voltage dividing regulating device | |
| CN205882817U (en) | Wind energy collection device based on wireless sensor network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |