CN110031705A - Electrochemical capacitor life monitoring method, device, electronic equipment and storage medium - Google Patents
Electrochemical capacitor life monitoring method, device, electronic equipment and storage medium Download PDFInfo
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- CN110031705A CN110031705A CN201910355351.7A CN201910355351A CN110031705A CN 110031705 A CN110031705 A CN 110031705A CN 201910355351 A CN201910355351 A CN 201910355351A CN 110031705 A CN110031705 A CN 110031705A
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Abstract
The present invention provides a kind of electrochemical capacitor life monitoring method, device, electronic equipment and storage mediums, are related to capacitor life-span management field.It is in standby by controlling charging module according to a monitoring signals, wherein, charging module includes electrolytic capacitor, then electrolytic capacitor is obtained to be under the first discharge loop, it is spaced the first voltage value and second voltage value of preheating setting time, electrolytic capacitor is obtained again to be under the second discharge loop, it is spaced the third voltage value and the 4th voltage value of preheating setting time, again according to the first voltage value, second voltage value, third voltage value, 4th voltage value determines equivalent series impedance and capacitance, finally when equivalent series impedance, which reaches presetting resistance value or capacitance, reaches presetting capacitance, determine that the service life of electrolytic capacitor is insufficient.Electrochemical capacitor life monitoring method, device, electronic equipment and storage medium provided by the invention have the advantages that monitoring of the realization to service life of electrolytic capacitor that can be simpler.
Description
Technical field
The present invention relates to capacitor life-span management fields, in particular to a kind of electrochemical capacitor life monitoring method, dress
It sets, electronic equipment and storage medium.
Background technique
Essential core component of the charging module as charging system, Performance And Reliability directly affect the peace of charging system
Quan Xing, power conversion circuit is the core component of charging module, and in power conversion circuit, electrolytic capacitor is due to its appearance
It measures big, at low cost, power storage, filtering and transformation is widely used in, according to domestic and international the study found that alminium electrolytic condenser is
Service life shortest component in power conversion system, therefore the service life of electrolytic capacitor is monitored most important.
But off-line type monitoring mode is mainly utilized for the monitoring in the service life of electrolytic capacitor at present, i.e., by electrolytic capacitor
It is disassembled from system, or needs to carry out the measurement of electric current using current sensor to realize the prison to electrochemical capacitor life
It surveys, therefore, the operation that traditional monitoring method is required to complexity is just able to achieve the monitoring to electrochemical capacitor life.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of electrochemical capacitor life monitoring method, device, electronic equipment and
Storage medium, to solve the problems, such as to need in the prior art to be just able to achieve by complicated operation to monitor electrochemical capacitor life.
To achieve the goals above, technical solution used in the embodiment of the present invention is as follows:
In a first aspect, the embodiment of the present invention proposes a kind of electrochemical capacitor life monitoring method, the electrochemical capacitor life prison
Survey method includes:
It is in standby according to monitoring signals control charging module, wherein the charging module includes electrolytic capacitor；
It obtains the electrolytic capacitor to be under the first discharge loop, is spaced the first voltage value and the second electricity of preheating setting time
Pressure value；
It obtains the electrolytic capacitor to be under the second discharge loop, is spaced the third voltage value and the 4th electricity of preheating setting time
Pressure value；
Institute is determined according to the first voltage value, the second voltage value, the third voltage value, the 4th voltage value
State the equivalent series impedance and capacitance of electrolytic capacitor；
When the equivalent series impedance reaches presetting resistance value or the capacitance reaches presetting capacitance
When, determine that the service life of the electrolytic capacitor is insufficient.
Second aspect, the embodiment of the present invention also propose a kind of electrochemical capacitor life monitoring device, the electrochemical capacitor life
Monitoring device includes:
Control unit, for being in standby according to monitoring signals control charging module, wherein the charging module
Including electrolytic capacitor；
Voltage value acquiring unit is under the first discharge loop for obtaining the electrolytic capacitor, is spaced preheating setting time
The first voltage value and second voltage value；
Voltage value acquiring unit is also used to obtain the electrolytic capacitor and is under the second discharge loop, is spaced preheating setting time
Third voltage value and the 4th voltage value；
Determination unit, for according to the first voltage value, the second voltage value, the third voltage value, described the
Four voltage values determine the equivalent series impedance and capacitance of the electrolytic capacitor；
Determination unit is also used to reach presetting resistance value when the equivalent series impedance or the capacitance reaches
When presetting capacitance, determine that the service life of the electrolytic capacitor is insufficient.
The third aspect, the embodiment of the present invention also propose a kind of electronic equipment, and the electronic equipment includes: one or more places
Manage device；Memory, for storing one or more programs, when one or more of programs are by one or more of processors
When execution, so that one or more of processors realize above-mentioned electrochemical capacitor life monitoring method.
Fourth aspect, the embodiment of the invention also provides a kind of storage mediums, are stored thereon with operation program, the operation journey
Above-mentioned electrochemical capacitor life monitoring method is realized when sequence is executed by processor.
Compared with the prior art, the invention has the following advantages:
The present invention provides a kind of electrochemical capacitor life monitoring method, device, electronic equipment and storage mediums, pass through foundation
One monitoring signals control charging module is in standby, wherein charging module includes electrolytic capacitor, then obtains electrolytic capacitor
Under the first discharge loop, it is spaced the first voltage value and second voltage value of preheating setting time, then obtains electrolytic capacitor and is in
Under second discharge loop, it is spaced the third voltage value and the 4th voltage value of preheating setting time, then according to the first voltage value, the second electricity
Pressure value, third voltage value, the 4th voltage value determine equivalent series impedance and capacitance, finally when equivalent series impedance reaches
When presetting resistance value or capacitance reaches presetting capacitance, determine that the service life of electrolytic capacitor is insufficient.Due to the application
Using the equivalent series impedance and capacitance of electric discharge relational expression estimation electrolytic capacitor, only calculated by software, therefore nothing
Electric current need to be obtained using current sensor, and without dismantling capacitor, therefore realization that can be simpler is to electrolytic capacitor
The monitoring in service life.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows the flow chart of electrochemical capacitor life monitoring method provided in an embodiment of the present invention.
Fig. 2 shows the module diagrams of charge-discharge system provided in an embodiment of the present invention.
The single order zero that Fig. 3 shows charging module provided in an embodiment of the present invention responds isoboles.
Fig. 4 shows the circuit diagram of the discharge circuit of charging module provided in an embodiment of the present invention.
Fig. 5 shows the flow chart of the sub-step of step S102 provided in an embodiment of the present invention.
Fig. 6 shows the flow chart of the sub-step of step S103 provided in an embodiment of the present invention.
Fig. 7 shows the functional unit schematic diagram of electrochemical capacitor life monitoring device provided in an embodiment of the present invention.
Fig. 8 shows the submodule schematic diagram of voltage value acquiring unit provided in an embodiment of the present invention.
Fig. 9 shows the module diagram of electronic equipment provided in an embodiment of the present invention.
Icon: 100- electrochemical capacitor life monitoring device；110- control unit；120- voltage value acquiring unit；121- control
Molding block；122- data obtaining module；130- determination unit；20- electronic equipment；21- processor；22- memory；23- bus.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Below in conjunction with attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually exist
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations herein.Cause
This, is not intended to limit claimed invention to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.Meanwhile of the invention
In description, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " connected ", " connection " shall be understood in a broad sense,
It for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to electricity
Connection；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.For
For those skilled in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.It ties below
Attached drawing is closed, is elaborated to some embodiments of the present invention.In the absence of conflict, following embodiment and embodiment
In feature can be combined with each other.
Referring to Fig. 1, being applied to charge and discharge system the embodiment of the invention provides a kind of electrochemical capacitor life monitoring method
System.Referring to Fig. 2, the charge-discharge system includes charging module (not shown), voltage acquisition module and host computer, voltage acquisition
Module is used to acquire the voltage of charging module, and communicates to connect between voltage acquisition module and host computer.
Wherein, charging module includes AC/DC module and electrolytic capacitor, due to electrolytic capacitor be in charging module the service life it is most short
Component, therefore for the service life of electrolytic capacitor monitor it is most important, the present embodiment by estimation electrolytic capacitor equivalent string
Join resistance value and determines whether the service life of electrolytic capacitor is insufficient with capacitance, it is additional without removing or needing by electrolytic capacitor
Hardware circuit so that simpler for the monitoring in the service life of electrolytic capacitor.
In charge-discharge system shown in Fig. 2, when charging module shutdown is discharged, circuit can be equivalent to firstorder circuit
Zero input response, as shown in Figure 3.According to capacitance voltage u in discharge processcExpression formulaτ=RC；If
There is discharge resistance R different twice, two equations can be obtained, electrochemical capacitor life monitoring method provided in this embodiment only needs
By sampling to output voltage, the capacitance and equivalent string of electrolytic capacitor are found out according to capacitance voltage equation in discharge process
Join resistance value, the status monitoring function to system output capacitance can be realized.
Further, RC circuit shown in Fig. 3 is the isoboles of charging module outlet side discharge circuit, switch S starting
Before, electrolytic capacitor C has charged, voltage uc=U0.After switch starting, the energy of capacitor storage will be by resistance with form of thermal energy
It releases.The switch motion moment is taken as time zero (t=0), after closing the switch, i.e. when t >=0+, can be obtained according to KVL
uR-uc=0 (formula 1)；
By uR=Ri,Above-mentioned equation is substituted into, is had
The formula is single order homogeneous differential equation, primary condition uc(0+)=uc(0-)=U0, can acquire and meet initial value
The solution of the differential equation is
Referring to Fig. 4, the isoboles of the discharge circuit for charging module, when charging module becomes standby shape from charged state
When state, module discharge loop starts, driving switch pipe S is connected or turns off upon receipt of the signals, and puts in different
In electrical circuit, resistance value is different, by when switching tube is respectively on state and off state, to the defeated of electrolytic capacitor
Voltage is sampled out, can be realized the estimation of the equivalent series impedance and capacitance to electrolytic capacitor.
Specifically, electrochemical capacitor life monitoring method provided in this embodiment includes:
Step S101 is in standby, wherein charging module includes electrolysis according to monitoring signals control charging module
Capacitor.
In the present embodiment, the monitoring to electrochemical capacitor life is realized using host computer, wherein host computer is able to respond behaviour
Make the monitoring signals of personnel, and executes the monitoring in the service life for electrolytic capacitor.
Wherein, when receiving monitoring signals, host computer can control first charging module and be in standby.This implementation
The charging module of example includes AC/DC module and electrolytic capacitor, and the standby mode of the present embodiment refers to the AC/DC module of disconnection
State, the charging of electrolytic capacitor has terminated at this time.
It should be noted that when host computer to charging module send instruct when, in fact it could happen that charging module be in
Situation under machine state, at this time host computer still can to charging module send control signal, and then determine charging module be in
Machine state.
Step S102, obtain electrolytic capacitor be under the first discharge loop, be spaced preheating setting time the first voltage value and
Second voltage value.
It, can be under different discharge loops to the output voltage of electrolytic capacitor after control charging module is in standby
It is sampled.Wherein, it only needs to sample the output voltage of electrolytic capacitor in hardware aspect, without increasing additionally
Circuit, the monitoring of the electrochemical capacitor life of realization pair that can be simpler.
Specifically, referring to Fig. 5, step S102 includes:
Sub-step S1021, control one discharge circuit starting, so that electrolytic capacitor is in the first discharge loop, wherein first
Discharge loop includes the discharge resistance, port resistive and equivalent series resistance being arranged in parallel.
Referring to Fig. 4, the discharge circuit of the present embodiment refers to the circuit for keeping electrolytic capacitor discharge rate most fast,
The control discharge circuit starting of the present embodiment refers to control switching tube S conducting, so that electrolytic capacitor be made to be in the first discharge loop
It discharges, at this point, including discharge resistance, port resistive and the equivalent series resistance being arranged in parallel, electrolysis in discharge loop
Capacitor is discharged simultaneously by discharge resistance, port resistive and equivalent series resistance.
Sub-step S1022 obtains the first voltage value of voltage acquisition module acquisition, wherein voltage acquisition module is used for
The output voltage of first discharge loop is sampled.
In the present embodiment, voltage acquisition module can store voltage value and charging module after collecting voltage value
In controller.
Sub-step S1023 obtains the second voltage value of voltage acquisition module acquisition when by preheating setting time.
When after preheating setting time, host computer controls voltage acquisition module again and samples to output voltage, when
So, host computer also can control voltage acquisition module to carry out continuing sampling to output voltage, and obtain when being spaced preheating setting time
The first voltage value and second voltage value for taking voltage acquisition module to acquire.
Furthermore, it is desirable to explanation, the preheating setting time equipment of the present embodiment is 500ms, that is, is obtaining the first voltage value
Afterwards, interval 500ms obtains second voltage value, and meets electric discharge relational expression between second voltage value and the first voltage valueOf course, in some other embodiments, preheating setting time may be set to be other values, the present embodiment
Any restriction is not done to this.
Step S103, obtain electrolytic capacitor be under the second discharge loop, be spaced preheating setting time third voltage value and
4th voltage value.
After obtaining first group of voltage data, in order to calculate the equivalent series impedance and capacitance of electrolytic capacitor, also
Need to obtain second group of voltage data.
It should be noted that in the present embodiment, after voltage acquisition module obtains first group of voltage data, host computer meeting
It controls AC/DC module to open, and is again switched off AC/DC module after a certain time, and control and obtain electrolytic capacitor in second
In discharge loop, and then second group of voltage data is obtained again by voltage acquisition module.For example, being closed again after 4S or 6S
Close AC/DC module.
Specifically, referring to Fig. 6, step S103 includes:
Sub-step S1031, control discharge circuit does not start, so that electrolytic capacitor is in the second discharge loop, wherein second
Discharge loop includes the port resistive and equivalent series resistance being arranged in parallel.
Referring to Fig. 4, in the present embodiment, first group of voltage data (i.e. the first voltage value and second voltage are being obtained
Value) after, AC/DC module reopens a period of time and is again switched off, and host computer can control discharge circuit and not start at this time,
In, the control discharge circuit of the present embodiment, which does not start, refers to that control switching tube S is in an off state, and electrolytic capacitor is still at this time
Discharge condition, and electrolytic capacitor is in the second discharge loop, wherein the second discharge loop includes the port resistive being arranged in parallel
With equivalent series resistance.
I.e. in the state that control switch pipe is switched on or off, electrolytic capacitor can be in discharge condition, and be electrolysed
When capacitor is in the first discharge loop, the discharge rate of electrolytic capacitor faster, and is in the second discharge loop in electrolytic capacitor
When middle, the discharge capacity of electrolytic capacitor is converted to the heat of port resistive and equivalent series resistance, and discharge rate is compared in the
Rate in one discharge loop is slower.
Sub-step S1032, obtain voltage acquisition module acquisition third voltage value, wherein voltage acquisition module for pair
The output voltage of second discharge loop is sampled.
Sub-step S1033 obtains the 4th voltage value of voltage acquisition module acquisition when by preheating setting time.
After obtaining third voltage value and the 4th voltage value, host computer can obtain second from the controller of charging module
Group voltage data.
Furthermore, it is desirable to which explanation, in the present embodiment, has no sequencing, i.e., between step S102 and step S103
When acquiring two groups of data, one group of voltage data (i.e. second group of voltage data) when discharge circuit does not start can be first acquired, then
Another group of voltage data (first group of voltage data) when discharge circuit starting is acquired, the program in discharge circuit that is, do not open
In the state of dynamic, second group of voltage data is obtained, later, control charging module is opened, and is again switched off over time, this
When, discharge circuit is controlled in the state of starting, obtains first group of voltage data；One when discharge circuit starting can also first be acquired
Group voltage data, then acquires another group of voltage data when discharge circuit does not start, the program as described by the above embodiments,
Details are not described herein.
Step S104 determines electrolytic capacitor according to the first voltage value, second voltage value, third voltage value, the 4th voltage value
Equivalent series impedance and capacitance.
It is utilized host computer (monitoring device) after obtaining two groups of voltage datas as a kind of implementation of the present embodiment
Data calculating is carried out, i.e. the voltage value of voltage acquisition module acquisition is stored in the controller of charging module, and host computer is from control
2 groups of voltage values under starting and not 2 kinds of states of star t-up discharge circuit are obtained in device, and bring formula into and electrolytic capacitor is calculated
Equivalent series resistance and capacitance.In the implementation, host computer not only needs to obtain voltage data from charging module, and
And it also needs to carry out data calculating.
As another implementation of the present embodiment, after obtaining two groups of voltage datas, the controller of charging module is straight
The calculating of row data is tapped into, i.e., in the controller of the voltage value input charging module of voltage acquisition module acquisition, controller is controlled simultaneously
2 groups of voltage values under starting and not 2 kinds of states of star t-up discharge circuit are obtained, so that the equivalent series of electrolytic capacitor be calculated
Resistance and capacitance, and the result being calculated is sent to host computer.In the implementation, host computer and charging module are carried out
Interactive information includes that host computer issues electrochemical capacitor life monitoring order to charging module, and charging module is uploaded to host computer
The life information of the result and electrolytic capacitor that are calculated.
Specifically, step S104 includes:
Sub-step S1041, according to formulaCalculate τ1Value, wherein U2Indicate second voltage value, U1Indicate the
One voltage value, t indicate preheating setting time.
Due to no matter electrolytic capacitor is in the first discharge loop or the second discharge loop when, can be equivalent to RC electricity
Road, i.e. circuit can be equivalent to the zero input response of firstorder circuit, meet electric discharge formula alwaysIt therefore, can be according to
According to formulaCalculate τ1Value, wherein U2Indicate second voltage value, U1The first voltage value is indicated, when t indicates presetting
Between, in the present embodiment 500ms should be set as with the time of setting.
Sub-step S1042, according to formulaCalculate τ2Value, wherein U3Indicate third voltage value, U4Indicate the
Four voltage values, t indicate preheating setting time.
Similarly, host computer can pass through formulaCalculate τ2Value, wherein U3Indicate third voltage value, U4
Indicate the 4th voltage value.
Sub-step S1043, according to formula τ1=R1C and τ2=R2C calculates equivalent series impedance and capacitance, wherein R1
The first parallel resistance value under the first discharge loop, R are in for electrolytic capacitor2It is under the second discharge loop for electrolytic capacitor
Second parallel resistance value, and R1With R2It is associated with equivalent series impedance.
Due in RC circuit, timeconstantτ=RC, therefore be in the first discharge loop obtaining electrolytic capacitor
Timeconstantτ1The timeconstantτ in the second electric discharge back is in electrolytic capacitor2Value after, can be according to formula τ1=R1C with
τ2=R2The numerical value of C calculating equivalent series resistance ESR and capacitance C.Wherein, R1It is under the first discharge loop for electrolytic capacitor
The first parallel resistance value, R2The second parallel resistance value under the second discharge loop, and R are in for electrolytic capacitor1With R2With etc.
Imitate series impedance association.
Specifically, the first parallel resistance value is the resistance after discharge resistance, port resistive and equivalent series resistance are in parallel
Value, the second parallel resistance value are the resistance value after port resistive is in parallel with equivalent series resistance, wherein discharge resistance and port electricity
The resistance value of resistance is preset value.That is R1=RO//ESR//R, R2=RO//ESR, wherein R is discharge resistance, ROFor port electricity
Resistance, ESR is equivalent series resistance, and for discharge circuit, R and ROIt is given value, and then can be according to the unitary two
Equation of n th order n solves equivalent series impedance and capacitance.
Step S105 reaches presetting capacitance when equivalent series impedance reaches presetting resistance value or capacitance
When, determine that the service life of electrolytic capacitor is insufficient.
In the use process of electrolytic capacitor, since the damage used will cause the equivalent series resistance of the electrolytic capacitor
Value is continuously increased, and the capacitance of electrolytic capacitor constantly reduces, when equivalent series impedance reaches presetting resistance value or capacitor
When value reaches presetting capacitance, host computer determines that the service life of electrolytic capacitor is insufficient, and generates corresponding alarm signal.
In the present embodiment, when equivalent series impedance reaches 3 times of the Reference Equivalent series impedance of electrolytic capacitor, or
When capacitance is less than the 80% of the reference capacitance value of electrolytic capacitor, determine that the service life of electrolytic capacitor is insufficient.
Second embodiment
Referring to Fig. 7, the corresponding electricity of electrochemical capacitor life monitoring method shown in FIG. 1 that present pre-ferred embodiments provide
Solve the functional unit schematic diagram of capacitor lifetime monitoring apparatus 100.It should be noted that the electrolytic capacitor longevity provided by the present embodiment
The technical effect of life monitoring device 100, basic principle and generation is identical with first embodiment, and to briefly describe, the present invention is real
It applies example part and does not refer to place, can refer to corresponding contents in the above embodiments.Electrochemical capacitor life monitoring device 100 includes:
Control unit 110, for being in standby according to monitoring signals control charging module, wherein charging module
Including electrolytic capacitor.
It should be understood that step S101 can be performed by control unit 110.
Voltage value acquiring unit 120 is under the first discharge loop for obtaining electrolytic capacitor, is spaced preheating setting time
The first voltage value and second voltage value.
It should be understood that step S102 can be performed by voltage value acquiring unit 120.
Wherein, referring to Fig. 8, voltage value acquiring unit 120 includes:
Control module 121, for controlling discharge circuit starting, so that electrolytic capacitor is in the first discharge loop.
It should be understood that sub-step S1021 can be performed by control module 121.
Data obtaining module 122, for obtaining the first voltage value of voltage acquisition module acquisition, wherein voltage acquisition
Module is for sampling the output voltage of the first discharge loop.
It should be understood that sub-step S1022 can be performed by acquisition of information mould 122.
Data obtaining module 122 is also used to when by preheating setting time, obtains the second electricity of voltage acquisition module acquisition
Pressure value.
It should be understood that sub-step S1023 can be performed by data obtaining module 122.
Voltage value acquiring unit 120 is also used to obtain electrolytic capacitor and is under the second discharge loop, is spaced preheating setting time
Third voltage value and the 4th voltage value.
It should be understood that step S103 can be performed by voltage value acquiring unit 120.
Determination unit 130, for determining electricity according to the first voltage value, second voltage value, third voltage value, the 4th voltage value
Solve the equivalent series impedance and capacitance of capacitor.
It should be understood that step S104 can be performed by determination unit 130.
Wherein it is determined that unit 130 includes computing module, sub-step S1041- sub-step can be executed by computing module respectively
S1043。
Determination unit 130 is also used to reach presetting when equivalent series impedance reaches presetting resistance value or capacitance
Capacitance when, determine that the service life of electrolytic capacitor is insufficient.
It should be understood that step S105 can be performed by determination unit 130.
3rd embodiment
Referring to Fig. 9, Fig. 9 shows the block diagram of electronic equipment 20 provided in an embodiment of the present invention.Electronic equipment
20 include processor 21, memory 22 and bus 23, and processor 21 and memory 22 are connected by bus 23.
Memory 22 is for storing program, such as electrochemical capacitor life monitoring device 100 shown in Fig. 7, electrolytic capacitor longevity
Monitoring device 100 is ordered, can be stored in memory 22 in the form of software or firmware (firmware) including at least one or solid
Change the software function module in the operating system (operating system, OS) of electronic equipment 20, processor 21 is receiving
To after executing instruction, described program is executed to realize the electrochemical capacitor life monitoring method of invention above-described embodiment announcement.
Electronic equipment 20 can be the computer of general purpose computer or specific use, both can be used to implement the present invention
The sequence labelling network update method of embodiment.The embodiment of the present invention is although illustrate only a computer, for convenience
For the sake of, function described herein can be realized in a distributed way on multiple similar platforms, loaded with equilibrium treatment.
Memory 22 may include high-speed random access memory (RAM:Random AccessMemory), it is also possible to also
Including nonvolatile storage (non-volatile memory), for example, at least a magnetic disk storage.
Processor 21 may be a kind of IC chip, the processing capacity with signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 21 or the instruction of software form.Above-mentioned
Processor 21 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (DSP), specific integrated circuit
(ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.
Fourth embodiment
The embodiment of the present invention further discloses a kind of readable storage medium storing program for executing, is stored thereon with operation program, and operation program is located
It manages and realizes that the present invention implements the electrochemical capacitor life monitoring method disclosed when device 21 executes.
In conclusion the present invention provides a kind of electrochemical capacitor life monitoring method, device, electronic equipment and storages to be situated between
Matter is in standby, wherein charging module includes electrolytic capacitor, then by controlling charging module according to a monitoring signals
It obtains electrolytic capacitor to be under the first discharge loop, is spaced the first voltage value and second voltage value of preheating setting time, then obtain
Electrolytic capacitor is under the second discharge loop, is spaced the third voltage value and the 4th voltage value of preheating setting time, then according to first
Voltage value, second voltage value, third voltage value, the 4th voltage value determine equivalent series impedance and capacitance, finally when equivalent
When series impedance reaches presetting resistance value or capacitance and reaches presetting capacitance, the service life of electrolytic capacitor is determined not
Foot.Due to the application using electric discharge relational expression estimation electrolytic capacitor equivalent series impedance and capacitance, only by software into
Row calculates, there is no need to obtain electric current using current sensor, and without dismantling capacitor, therefore realization that can be simpler
Monitoring to the service life of electrolytic capacitor.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.It should also be noted that similar label and letter exist
Similar terms are indicated in following attached drawing, therefore, once being defined in a certain Xiang Yi attached drawing, are then not required in subsequent attached drawing
It is further defined and explained.
Claims (9)
1. a kind of electrochemical capacitor life monitoring method, which is characterized in that the electrochemical capacitor life monitoring method includes:
It is in standby according to monitoring signals control charging module, wherein the charging module includes electrolytic capacitor；
It obtains the electrolytic capacitor to be under the first discharge loop, is spaced the first voltage value and second voltage of preheating setting time
Value；
It obtains the electrolytic capacitor to be under the second discharge loop, is spaced the third voltage value and the 4th voltage of preheating setting time
Value；
The electricity is determined according to the first voltage value, the second voltage value, the third voltage value, the 4th voltage value
Solve the equivalent series impedance and capacitance of capacitor；
When the equivalent series impedance reaches presetting resistance value or the capacitance reaches presetting capacitance, really
The service life of the fixed electrolytic capacitor is insufficient.
2. electrochemical capacitor life monitoring method as described in claim 1, which is characterized in that described to obtain at the electrolytic capacitor
Under the first discharge loop, the step of being spaced the first voltage value and second voltage value of preheating setting time, includes:
Discharge circuit starting is controlled, so that the electrolytic capacitor is in the first discharge loop, wherein first discharge loop
Including the discharge resistance, port resistive and equivalent series resistance being arranged in parallel；
Obtain the first voltage value of voltage acquisition module acquisition, wherein the voltage acquisition module to described first for putting
The output voltage of electrical circuit is sampled；
When by the preheating setting time, the second voltage value of the voltage acquisition module acquisition is obtained.
3. electrochemical capacitor life monitoring method as described in claim 1, which is characterized in that described to obtain at the electrolytic capacitor
Under the second discharge loop, the third voltage value and the step of four voltage values for being spaced preheating setting time include:
It controls a discharge circuit not start, so that the electrolytic capacitor is in the second discharge loop, wherein described second discharges back
Road includes the port resistive and equivalent series resistance being arranged in parallel；
Obtain the third voltage value of voltage acquisition module acquisition；Wherein, the voltage acquisition module is also used to put to described second
The output voltage of electrical circuit is sampled；When by the preheating setting time, the of the voltage acquisition module acquisition is obtained
Four voltage values.
4. electrochemical capacitor life monitoring method as described in claim 1, which is characterized in that described according to the first voltage
Value, the second voltage value, the third voltage value, the 4th voltage value determine the equivalent series resistance of the electrolytic capacitor
Value includes: with the step of capacitance
According to formulaCalculate τ1Value, wherein U2Indicate second voltage value, U1Indicate the first voltage value, t indicates pre-
Setting time；
According to formulaCalculate τ2Value, wherein U3Indicate third voltage value, U4Indicate the 4th voltage value；
According to formula τ1=R1C and τ2=R2C calculates equivalent series impedance and capacitance, wherein R1The is in for electrolytic capacitor
The first parallel resistance value under one discharge loop, R2It is in the second parallel resistance value under the second discharge loop for electrolytic capacitor,
And R1With R2It is associated with the equivalent series impedance.
5. electrochemical capacitor life monitoring method as claimed in claim 4, which is characterized in that the first parallel resistance value is to put
Resistance value after resistance, port resistive and equivalent series resistance are in parallel, the second parallel resistance value are the port electricity
Resistance value after resistance is in parallel with the equivalent series resistance, wherein the resistance value of the discharge resistance and the port resistive is equal
For preset value.
6. electrochemical capacitor life monitoring method as described in claim 1, which is characterized in that described to work as the equivalent series resistance
Value reaches presetting resistance value or when the capacitance reaches presetting capacitance, determines the service life of the electrolytic capacitor not
Foot step include:
When the equivalent series impedance reaches 3 times or the capacitor of the Reference Equivalent series impedance of the electrolytic capacitor
When value is less than the 80% of the reference capacitance value of the electrolytic capacitor, determine that the service life of the electrolytic capacitor is insufficient.
7. a kind of electrochemical capacitor life monitoring device, which is characterized in that the electrochemical capacitor life monitoring device includes:
Control unit, for being in standby according to monitoring signals control charging module, wherein the charging module includes
Electrolytic capacitor；
Voltage value acquiring unit is under the first discharge loop for obtaining the electrolytic capacitor, is spaced the of preheating setting time
One voltage value and second voltage value；
Voltage value acquiring unit is also used to obtain the electrolytic capacitor and is under the second discharge loop, is spaced the of preheating setting time
Three voltage values and the 4th voltage value；
Determination unit, for according to the first voltage value, the second voltage value, the third voltage value, the 4th electricity
Pressure value determines the equivalent series impedance and capacitance of the electrolytic capacitor；
Determination unit is also used to reach presetting resistance value when the equivalent series impedance or the capacitance reaches default
When fixed capacitance, determine that the service life of the electrolytic capacitor is insufficient.
8. a kind of electronic equipment, which is characterized in that the electronic equipment includes:
One or more processors；
Memory, for storing one or more programs, when one or more of programs are by one or more of processors
When execution, so that one or more of processors realize such as method of any of claims 1-6.
9. a kind of storage medium, which is characterized in that be stored thereon with operation program, which is characterized in that the operation program is processed
Device realizes as the method according to claim 1 to 6 when executing.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444677A (en) * | 2019-09-02 | 2021-03-05 | 北京金风科创风电设备有限公司 | Super capacitor life monitoring method and device and storage medium |
| CN112611930A (en) * | 2020-12-03 | 2021-04-06 | 上海新时达电气股份有限公司 | Information prediction method, system, electronic device and storage medium |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| CN102033182A (en) * | 2010-12-10 | 2011-04-27 | 北京航空航天大学 | Method for predicting life of solid tantalum electrolytic capacitor |
| CN102262191A (en) * | 2011-04-28 | 2011-11-30 | 北京航空航天大学 | Method for forecasting service life of solid tantalum electrolytic capacitor |
| CN103675533A (en) * | 2013-11-28 | 2014-03-26 | 华为技术有限公司 | Direct-current bus electrolytic capacitor life test method and device |
| CN105699786A (en) * | 2016-01-28 | 2016-06-22 | 重庆大学 | A direct current bus capacitor monitoring method and system based on a variable discharge network |
| CN105891644A (en) * | 2016-05-26 | 2016-08-24 | 重庆大学 | Monitoring method of electrolytic capacitor of converter |
| CN106126876A (en) * | 2016-06-13 | 2016-11-16 | 武汉大学 | A kind of electrochemical capacitor life computational methods analyzed based on ripple |
| CN106291150A (en) * | 2015-05-22 | 2017-01-04 | 国网河南省电力公司电力科学研究院 | A kind of electrochemical capacitor life computational methods analyzed based on ripple |
| CN106597176A (en) * | 2016-12-30 | 2017-04-26 | 北京金风科创风电设备有限公司 | Method and system for predicting residual life of electrolytic capacitor |
| CN206906509U (en) * | 2017-07-10 | 2018-01-19 | 山东光因照明科技有限公司 | Electrochemical capacitor life tester |
| CN108875126A (en) * | 2018-04-27 | 2018-11-23 | 中国航空无线电电子研究所 | Electrolytic capacitor method for predicting residual useful life |
-
2019
- 2019-04-29 CN CN201910355351.7A patent/CN110031705A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201069461Y (en) * | 2007-06-18 | 2008-06-04 | 深圳市中传电气技术有限公司 | A life monitoring device for aluminum electrolysis capacitor in the frequency converter |
| CN102033182A (en) * | 2010-12-10 | 2011-04-27 | 北京航空航天大学 | Method for predicting life of solid tantalum electrolytic capacitor |
| CN102262191A (en) * | 2011-04-28 | 2011-11-30 | 北京航空航天大学 | Method for forecasting service life of solid tantalum electrolytic capacitor |
| CN103675533A (en) * | 2013-11-28 | 2014-03-26 | 华为技术有限公司 | Direct-current bus electrolytic capacitor life test method and device |
| CN106291150A (en) * | 2015-05-22 | 2017-01-04 | 国网河南省电力公司电力科学研究院 | A kind of electrochemical capacitor life computational methods analyzed based on ripple |
| CN105699786A (en) * | 2016-01-28 | 2016-06-22 | 重庆大学 | A direct current bus capacitor monitoring method and system based on a variable discharge network |
| CN105891644A (en) * | 2016-05-26 | 2016-08-24 | 重庆大学 | Monitoring method of electrolytic capacitor of converter |
| CN106126876A (en) * | 2016-06-13 | 2016-11-16 | 武汉大学 | A kind of electrochemical capacitor life computational methods analyzed based on ripple |
| CN106597176A (en) * | 2016-12-30 | 2017-04-26 | 北京金风科创风电设备有限公司 | Method and system for predicting residual life of electrolytic capacitor |
| CN206906509U (en) * | 2017-07-10 | 2018-01-19 | 山东光因照明科技有限公司 | Electrochemical capacitor life tester |
| CN108875126A (en) * | 2018-04-27 | 2018-11-23 | 中国航空无线电电子研究所 | Electrolytic capacitor method for predicting residual useful life |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444677A (en) * | 2019-09-02 | 2021-03-05 | 北京金风科创风电设备有限公司 | Super capacitor life monitoring method and device and storage medium |
| CN112444677B (en) * | 2019-09-02 | 2023-08-22 | 北京金风科创风电设备有限公司 | Super capacitor service life monitoring method, device and storage medium |
| CN112611930A (en) * | 2020-12-03 | 2021-04-06 | 上海新时达电气股份有限公司 | Information prediction method, system, electronic device and storage medium |
| CN114374238A (en) * | 2021-03-31 | 2022-04-19 | 华为数字能源技术有限公司 | Electrolytic capacitor self-repairing method and device, electronic equipment and storage medium |
| CN113156218A (en) * | 2021-04-29 | 2021-07-23 | 特变电工西安柔性输配电有限公司 | Online life monitoring protection method, device, equipment and medium for thin film capacitor |
| DE112022003244T5 (en) | 2021-06-25 | 2024-04-04 | Jiangsu Rozenmed Medical Technology Co., Ltd | HIGH FREQUENCY PULSE AC POWER SUPPLY WITH HIGH POWER DENSITY AND LONG LIFE |
| CN113608046A (en) * | 2021-07-27 | 2021-11-05 | 科华数据股份有限公司 | Capacitor life detection method and device and terminal equipment |
| CN113608046B (en) * | 2021-07-27 | 2024-07-26 | 科华数据股份有限公司 | Capacitor life detection method and device and terminal equipment |
| CN117411315A (en) * | 2023-12-15 | 2024-01-16 | 深圳鹏城新能科技有限公司 | Self-adaptive adjustment method, system and storage medium for bootstrap isolated power supply |
| CN117411315B (en) * | 2023-12-15 | 2024-03-22 | 深圳鹏城新能科技有限公司 | Self-adaptive adjustment method, system and storage medium for bootstrap isolated power supply |
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