CN109444598A - A kind of performance test methods of supercapacitor - Google Patents
A kind of performance test methods of supercapacitor Download PDFInfo
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- CN109444598A CN109444598A CN201811458531.XA CN201811458531A CN109444598A CN 109444598 A CN109444598 A CN 109444598A CN 201811458531 A CN201811458531 A CN 201811458531A CN 109444598 A CN109444598 A CN 109444598A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
This application provides a kind of performance test methods of supercapacitor, comprising: carries out initialization process to supercapacitor；Charge and discharge cycles are carried out to the supercapacitor；Stewing process is carried out to the supercapacitor according to preset time；The supercapacitor is tested for the property, and judges the cycle performance of the supercapacitor according to test data.The application estimates the cycle performance of supercapacitor by carrying out charge and discharge cycles test to supercapacitor, it solves the problems, such as that current constant current charge-discharge is not inconsistent with practical application operating condition, reliable and effective assess can be carried out to the cycle performance of supercapacitor.
Description
Technical field
This application involves a kind of surveys of the cycle performance of supercapacitor detection technique field more particularly to supercapacitor
Method for testing.
Background technique
As a kind of power-type energy storage device, supercapacitor has output power height, fast response time, service life
The excellent characteristics such as long, non-maintaining, can be realized MW class power compensation, in electric power frequency modulation, distribution terminal power supply, power quality
The fields extensive application prospects such as adjusting.
Reliability is energy storage device the problem of the prerequisite that extensive energy storage field is applied is with most paying close attention to, accumulator
The life prediction of part is of great significance for the decision, design, O&M of energy-storage system.Standard " GB/T 34870.1-2017 "
To the cycle performance test method of supercapacitor are as follows: (1) be charged to voltage rating U to capacitor monomer with constant current IR,
Stand 5s；(2) minimum operating voltage U is charged to capacitor monomer with constant current Imin, stand 5s；；(3) step is repeated
(1)~(2) 2000 times；(4) 12h is stood；(5) capacitor monomer internal resistance and capacity are recorded, if it is super to meet electric double layer/mixed type
The limit value of grade condenser capacity and internal resistance, and electroless liquid leaks, then jumps in next step, otherwise determine unqualified and terminate
Test；(6) step (1)~(5) n times are repeated.Hybrid capacitors n=5, double layer capacitor n=10.Currently, for super
The assessment of the cycle performance of capacitor remains in the test method of current electronic component and field of track traffic, mostly uses
The assessment mode of the similar constant current charge-discharge of standard " GB/T 34870.1-2017 ".And for needing frequent power charge and discharge
Application scenarios be such as used as the thermoelectricity generating set auxiliary frequency modulation system or application as energy recycling system, the test
Often difference is larger with practical application operating condition for method.
Therefore, it is necessary to establish the supercapacitor cycle performance test method for being directed to power energy storage application scenarios, with effective
Cycle performance of the supercapacitor under power grid application scene is assessed, is provided for the design of super capacitor energy storage system, O&M
Secure support.
Summary of the invention
This application provides a kind of performance test methods of supercapacitor, solve current constant current charge-discharge and reality
The problem of border is not inconsistent using operating condition can carry out reliable and effective assess to the cycle performance of supercapacitor.
This application provides a kind of performance test methods of supercapacitor, comprising:
Initialization process is carried out to supercapacitor；
Charge and discharge cycles are carried out to the supercapacitor；Wherein, the charge and discharge link specifically includes: according to first
Electric discharge invariable power and the first preset time period discharge to the supercapacitor；
It is discharged according to the second electric discharge invariable power and the second preset time period the supercapacitor；
It is discharged according to third electric discharge invariable power and third preset time period the supercapacitor；
It is charged according to the first charging invariable power and first preset time period to the supercapacitor；
It is charged according to the second charging invariable power and second preset time period to the supercapacitor；
It is charged according to third charging invariable power and the third preset time period to the supercapacitor；
It is discharged according to third electric discharge invariable power and the third preset time period the supercapacitor；
It is discharged according to the second electric discharge invariable power and second preset time period the supercapacitor；
It is discharged according to the first electric discharge invariable power and first preset time period the supercapacitor；
It is charged according to third charging invariable power and the third preset time period to the supercapacitor；
It is charged according to the second charging invariable power and second preset time period to the supercapacitor；
It is charged according to the first charging invariable power and first preset time period to the supercapacitor；
The voltage that the supercapacitor is discharged to the supercapacitor is equal to according to the first electric discharge invariable power
Preset discharge voltage threshold；
According to the preset discharge voltage threshold and the 4th preset time period to the supercapacitor constant-voltage charge；
Stewing process is carried out to the supercapacitor according to preset time；
The supercapacitor is tested for the property, corresponding performance curve is drawn according to test data, and according to institute
State the cycle performance that test data judges the supercapacitor.
Preferably, described that supercapacitor progress charge and discharge cycles are specifically included: according to preset charge and discharge threshold value
Charge and discharge cycles are initialized to the supercapacitor；It obtains and records the supercapacitor and carry out the initialization charge and discharge
Average initial charge energy and average initial discharge energy after electricity circulation.
Preferably, described that supercapacitor initialization charge and discharge cycles are specifically wrapped according to preset charge and discharge threshold value
It includes:
The supercapacitor is discharged to discharge cut-off voltage according to nominal discharge power, stands 10s；
The supercapacitor is charged into charge cutoff voltage according to specified charge power, stands 10s.
Preferably, described that supercapacitor progress charge and discharge cycles are specifically included: according to preset loop threshold value pair
The supercapacitor carries out charge and discharge cycles；It obtains and records after the supercapacitor carries out the charge and discharge cycles
Rechargeable energy and discharge energy.
Preferably, the supercapacitor is tested for the property, corresponding performance curve is drawn according to test data,
And judge that the cycle performance of the supercapacitor specifically includes according to the test data:
It obtains the supercapacitor and carries out the charging cycle energy after charge and discharge cycles according to the preset loop threshold value
With discharge cycles energy, and according to the charging cycle energy, the discharge cycles energy, the average initial charge energy
With the charge-discharge energy conservation rate and energy efficiency of supercapacitor described in the average initial discharge energy balane；And according to
The charge-discharge energy conservation rate and the energy efficiency draw the circulation that corresponding performance curve judges the supercapacitor
Performance.
Preferably, described that the supercapacitor is tested for the property, and the super electricity is judged according to test data
The cycle performance of container further include:
Judge whether the internal resistance value is greater than nominal value preset times, if so, determining the circulation of the supercapacitor
Performance is unqualified.
Preferably, the preset time is specially 12 hours.
Preferably, the preset loop threshold value is specially 250.
As can be seen from the above technical solutions, the application has the following advantages:
This application provides a kind of performance test methods of supercapacitor, comprising: initializes to supercapacitor
Processing；Charge and discharge cycles are carried out to the supercapacitor；Wherein, the charge and discharge link specifically includes: according to the first electric discharge
Invariable power and the first preset time period discharge to the supercapacitor；According to the second electric discharge invariable power and the second preset time period pair
The supercapacitor electric discharge；It is discharged according to third electric discharge invariable power and third preset time period the supercapacitor；According to
First charging invariable power and first preset time period charge to the supercapacitor；According to the second charging invariable power and institute
The second preset time period is stated to charge to the supercapacitor；According to third charging invariable power and the third preset time period to institute
State supercapacitor charging；The supercapacitor is put according to third electric discharge invariable power and the third preset time period
Electricity；It is discharged according to the second electric discharge invariable power and second preset time period the supercapacitor；According to described first
Electric discharge invariable power and first preset time period discharge to the supercapacitor；According to third charging invariable power and institute
Third preset time period is stated to charge to the supercapacitor；According to the second charging invariable power and second preset time period
It charges to the supercapacitor；According to the first charging invariable power and first preset time period to the super capacitor
Device charging；The voltage that the supercapacitor is discharged to the supercapacitor is equal to according to the first electric discharge invariable power
Preset discharge voltage threshold；According to the preset discharge voltage threshold and the 4th preset time period to the supercapacitor constant pressure
Charging；Stewing process is carried out to the supercapacitor according to preset time；The supercapacitor is tested for the property,
Corresponding performance curve is drawn according to test data, and judges the cyclicity of the supercapacitor according to the test data
Energy.
The application is carried out by carrying out charge and discharge cycles test to supercapacitor come the cycle performance to supercapacitor
It estimates, solves the problems, such as that current constant current charge-discharge is not inconsistent with practical application operating condition, it can be to the cyclicity of supercapacitor
It can be carried out reliable and effective assessed.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
Some embodiments of the present application, for those of ordinary skill in the art, without any creative labor,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of process signal of first embodiment of the performance test methods of supercapacitor provided by the present application
Figure；
Fig. 2 is a kind of electricity of the example 1 of the second embodiment of the performance test methods of supercapacitor provided by the present application
Stream, voltage and power change over time curve；
Fig. 3 is a kind of circulation of the example 1 of the second embodiment of the performance test methods of supercapacitor provided by the present application
Performance curve；
Fig. 4 is a kind of electricity of the example 2 of the second embodiment of the performance test methods of supercapacitor provided by the present application
Stream, voltage and power change over time curve；
Fig. 5 is a kind of circulation of the example 2 of the second embodiment of the performance test methods of supercapacitor provided by the present application
Performance curve.
Specific embodiment
This application provides a kind of performance test methods of supercapacitor, solve current constant current charge-discharge and reality
The problem of border is not inconsistent using operating condition can carry out reliable and effective assess to the cycle performance of supercapacitor.
To enable present invention purpose, feature, advantage more obvious and understandable, below in conjunction with this Shen
Please attached drawing in embodiment, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that is retouched below
The embodiment stated is only some embodiments of the present application, and not all embodiment.Based on the embodiment in the application, originally
Field those of ordinary skill all other embodiment obtained without making creative work, belongs to this Shen
The range that please be protect.
Referring to Fig. 1, Fig. 1 is a kind of first embodiment of the performance test methods of supercapacitor provided by the present application
Flow diagram.
This application provides a kind of performance test methods of supercapacitor, comprising:
S1 carries out initialization process to supercapacitor；
S2 carries out charge and discharge cycles to supercapacitor；Wherein, charge and discharge link specifically includes: permanent according to the first electric discharge
Power and the first preset time period discharge to supercapacitor；
It is discharged according to the second electric discharge invariable power and the second preset time period supercapacitor；
It is discharged according to third electric discharge invariable power and third preset time period supercapacitor；
It is charged according to the first charging invariable power and the first preset time period to supercapacitor；
It is charged according to the second charging invariable power and the second preset time period to supercapacitor；
It is charged according to third charging invariable power and third preset time period to supercapacitor；
It is discharged according to third electric discharge invariable power and third preset time period supercapacitor；
It is discharged according to the second electric discharge invariable power and the second preset time period supercapacitor；
It is discharged according to the first electric discharge invariable power and the first preset time period supercapacitor；
It is charged according to third charging invariable power and third preset time period to supercapacitor；
It is charged according to the second charging invariable power and the second preset time period to supercapacitor；
It is charged according to the first charging invariable power and the first preset time period to supercapacitor；
The voltage that supercapacitor is discharged to supercapacitor is equal to preset discharge voltage according to the first electric discharge invariable power
Threshold value；
According to preset discharge voltage threshold and the 4th preset time period to supercapacitor constant-voltage charge；
S3 carries out stewing process to supercapacitor according to preset time；
S4 is tested for the property supercapacitor, draws corresponding performance curve according to test data, and according to survey
Examination data judge the cycle performance of supercapacitor.
It should be noted that specific step includes: first to this when carrying out cycle performance test to supercapacitor
Supercapacitor carries out initialization process, carries out charge and discharge cycles to cycle-index to the supercapacitor after initialization process
After reaching certain number, which is stood after a certain period of time, supercapacitor is tested for the property, according to
Test data draws corresponding performance curve, and the cycle performance of the supercapacitor is judged according to the test data of acquisition.
A kind of second embodiment of the performance test methods of supercapacitor provided by the present application explained below:
Further, it carries out charge and discharge cycles to supercapacitor to specifically include: according to preset charge and discharge threshold value to super
Capacitor initializes charge and discharge cycles；Obtain and record supercapacitor carry out it is average initial after initialization charge and discharge cycles
Rechargeable energy and average initial discharge energy.
It should be noted that supercapacitor carry out initialization process specifically includes the following steps:
(1), it is pre-charged: (1) shelving 5h at (25 ± 2) DEG C；(2) the supercapacitor monomer is filled with rated current
Electricity is to voltage rating.
(2), determine that the type of the supercapacitor, the type of supercapacitor include double electric layers supercapacitor, mix
Mould assembly supercapacitor and cell type supercapacitor.
(3), initialization charge and discharge cycles are carried out to the supercapacitor；
(4), initial internal resistance test is carried out to the supercapacitor: is surpassed according to standard " GB/T 34870.1-2017 "
Grade capacitor internal resistance test；
(5), initialization charging is carried out to the supercapacitor.
Further, supercapacitor initialization charge and discharge are specifically included: according to preset charge and discharge threshold value to super electricity
Container initializes charge and discharge cycles；It obtains and record that supercapacitor carries out after initialization charge and discharge cycles average initially fills
Electric flux and average initial discharge energy.
Further, supercapacitor initialization charge and discharge cycles are specifically included according to preset charge and discharge threshold value:
Supercapacitor is discharged to discharge cut-off voltage according to nominal discharge power, stands 10s；
Supercapacitor is charged into charge cutoff voltage according to specified charge power, stands 10s.
It is specifically included it should be noted that carrying out initialization charge and discharge cycles to the supercapacitor:
A) supercapacitor is with nominal discharge power Prdn’It is discharged to final discharging voltage Umin, stand 10s；
B) supercapacitor is with specified charge power PrcnCharge to end of charge voltage UR, stand 10s.
Repeat step a)~b) it carries out charge and discharge cycles 3 times, and the average value of 3 charge and discharge cycles is taken, it is super to record this
Capacitor carries out the average initial charge ENERGY E after initialization charge and discharge cyclescn(Wh) and average initial discharge ENERGY Edn’
(Wh)；
After having carried out charge and discharge cycles, initial internal resistance test is carried out to supercapacitor respectively and to the supercapacitor
Carry out initialization charging, wherein initialization charging is specially by capacitor monomer with PrcnInvariable power charges to final voltage UR。
Further, include: after charge and discharge cycles
The voltage that supercapacitor is discharged to supercapacitor is equal to preset discharge voltage according to the first electric discharge invariable power
Threshold value；
According to preset discharge voltage threshold and the 4th preset time period to supercapacitor constant-voltage charge.
It should be noted that specific charge and discharge cycles specifically include on the basis of abovementioned steps (1)-(5):
(6) supercapacitor is with M1Prdn’Invariable power electric discharge n '/m1min；
(7) supercapacitor is with M2Prdn’Invariable power electric discharge n '/m2min；
(8) supercapacitor is with M3Prdn’Invariable power electric discharge n '/m3min；
(9) supercapacitor is with M1PrcnInvariable power charging n/m1min；
(10) supercapacitor is with M2PrcnInvariable power charging n/m2min；
(11) supercapacitor is with M3PrcnInvariable power charging n/m3min；
(12) supercapacitor is with M3Prdn’Invariable power electric discharge n '/m3min；
(13) supercapacitor is with M2Prdn’Invariable power electric discharge n '/m2min；
(14) supercapacitor is with M1Prdn’Invariable power electric discharge n '/m1min；
(15) supercapacitor is with M3PrcnInvariable power charging n/m3min；
(16) supercapacitor is with M2PrcnInvariable power charging n/m2min；
(17) supercapacitor is with M1PrcnInvariable power charging n/m1min；
(18) supercapacitor is with M1Prdn’It is U that invariable power, which is discharged to voltage,1；
(19)U1Constant-voltage charge m × n min under voltage；
Repetitive cycling step (6)~(19) 250 times；
It is then allowed to stand 12h.
Further, supercapacitor is tested for the property, corresponding performance curve is drawn according to test data, and
Judge that the cycle performance of supercapacitor specifically includes according to test data:
Obtain supercapacitor according to preset loop threshold value carry out charge and discharge cycles after charging cycle energy and electric discharge follow
Ring energy, and according to charging cycle energy, discharge cycles energy, average initial charge energy and average initial discharge energy meter
Calculate the charge-discharge energy conservation rate and energy efficiency of supercapacitor；And it is drawn according to charge-discharge energy conservation rate and energy efficiency
Make the cycle performance that corresponding performance curve judges supercapacitor.
It should be noted that obtain supercapacitor carry out 250 charge and discharge cycles at the end of charging cycle energy and
Discharge cycles energy, and according to the charging cycle energy and average initial charge ENERGY Ecn(Wh) supercapacitor is calculated
Rechargeable energy conservation rate and corresponding rechargeable energy efficiency；According to the discharge cycles energy and average initial discharge ENERGY Edn’
(Wh) calculate the supercapacitor discharge energy conservation rate and corresponding discharge energy efficiency and corresponding discharge energy effect
Rate；It is somebody's turn to do according to the rechargeable energy conservation rate, rechargeable energy efficiency, discharge energy efficiency and the discharge energy efficiency that are calculated
The curve graph that supercapacitor changes with cycle-index, and judge whether supercapacitor meets the following conditions:
Charge-discharge energy conservation rate: the charge-discharge energy conservation rate of qualified double electric layers supercapacitor is not less than 90%, closes
Lattice hybrid super capacitor and the charge-discharge energy conservation rate of spec battery type supercapacitor are not less than 85%；
Internal resistance variation: qualified double electric layers supercapacitor is super according to standard " GB/T 34870.1-2017 " progress
Internal resistance variation after capacitor internal resistance test is not more than 1.5 times of nominal value, qualified hybrid super capacitor and qualification electricity
Interior resistive of the pond type supercapacitor after carrying out supercapacitor inner walkway according to standard " GB/T 34870.1-2017 "
Change 2 times for being not more than nominal value；
Judge that the supercapacitor is revealed with the presence or absence of electrolyte or with the presence or absence of apparent profile variation, only exists
Meet the supercapacitor under the premise of above-mentioned Rule of judgment, and meets and apparent shape is revealed and be not present there is no electrolyte
Variation just can determine that the cycle performance of the supercapacitor for qualification.
Finally repeat step (5)~(22) 10-40 times, wherein double electric layers supercapacitor repeats 40 times, and mixed type is super
Grade capacitor is repeated 20 times, and cell type supercapacitor is repeated 10 times, and carries out corresponding record；
The cycle charge-discharge life curve under the test condition is drawn according to the test data of record, can effectively be assessed
The cycle performance of supercapacitor under actual power service condition provides service life reference for the practical application of supercapacitor
Foundation.
Wherein, parameters are defined as follows:
N: the specified charging minute rate of supercapacitor, numerical value be equal to supercapacitor specified rechargeable energy/it is specified
Charge power * 60, and should be chosen from following numerical value: 0.5,1,2,4,8,16；
N ': the nominal discharge minute rate of supercapacitor, numerical value are equal to nominal discharge energy/volume of supercapacitor
Determine discharge power * 60, and should be chosen from following numerical value: 0.5,1,2,4,8,16；
Ercn: the unit of n minutes specified rechargeable energies, capacitor monomer and mould group is Wh。
Erdn’: the unit of n ' minute nominal discharge energy, capacitor monomer and mould group is Wh。
Prcn: n minutes specified charge powers, the unit of capacitor monomer are W, and the unit of capacitor mould group is kW.
Prdn’: n ' minute nominal discharge power, the unit of capacitor monomer are W, and the unit of capacitor mould group is kW.
UR: specified maximum operating voltage, V；
Umin: specified minimum operating voltage, V；
IR: the rated current of capacitor, A；
R: capacitor internal resistance, Ω；
In step (6)~(17), M1~M3It is 0.25~4, and M1<M2<M3, preferably, M1=1, M2=2, M3=3；
m1~m3It is 0.25~16, and m1<m2< m3, preferably, m1=4, m2=8, m3=12；Meanwhile MiAnd miShould also it meet
U in step (18)1For Umin~0.9UR, preferably, U1Select (UR+Umin)/2。
M is 1~6 in step (19), preferably, m selection 3.
Further, supercapacitor is tested for the property, and judges the circulation of supercapacitor according to test data
Performance further include:
Judge whether internal resistance value is greater than nominal value preset times, if so, determining that the cycle performance of supercapacitor does not conform to
Lattice.
Further, preset time is specially 12 hours.
Further, preset loop threshold value is specially 250.
The second embodiment of the application will be described further by two specific examples below:
Example 1:
(1) test object: A producer nominal capacity is 3000F double electric layers supercapacitor monomer；
(2) test equipment: battery test system (measurement range 0-5V, ± 100A, measuring accuracy: ± 0.05%FS)；It is high
Cryogenic box (- 40~65 DEG C)；The above instrument passes through measurement and calibration.
(3) testing procedure:
(a) it is pre-charged
1) 5h is shelved at (25 ± 2) DEG C；
2) capacitor monomer is charged to by voltage rating 2.7V with rated current 45A.
(b) charge and discharge are initialized
1) capacitor monomer is discharged to 1.35V with nominal discharge power 90W, stands 10s；
2) capacitor monomer charges to 2.7V with specified charge power 90W, stands 10s.
3) step 1)~2 are repeated) it carries out charge and discharge cycles 3 times, the average value of 3 tests is taken, initial charge energy is recorded
Ecn(Wh), discharge energy Edn’(Wh)。
(c) initial internal resistance is tested
Supercapacitor inner walkway is carried out according to standard " GB/T 34870.1-2017 ".
(d) initialization charging, according to the 2 of (b)) capacitor monomer charges to 2.7V with 90W invariable power by step；
(e) capacitor monomer is with 40W invariable power electric discharge 1min；
(f) capacitor monomer is with 80W invariable power electric discharge 0.5min；
(g) capacitor monomer is with 120W invariable power electric discharge 0.25min；
(h) capacitor monomer is with 40W invariable power charging 1min；
(i) capacitor monomer is with 80W invariable power charging 0.5min；
(j) capacitor monomer is with 120W invariable power charging 0.25min；
(k) capacitor monomer is with 120W invariable power electric discharge 0.25min；
(l) capacitor monomer is with 80W invariable power electric discharge 0.5min；
(m) capacitor monomer is with 40W invariable power electric discharge 1min；
(n) capacitor monomer is with 120W invariable power charging 0.25min；
(o) capacitor monomer is with 80W invariable power charging 0.5min；
(p) capacitor monomer is with 40W invariable power charging 1min；
(q) capacitor monomer is discharged to voltage with 40W invariable power as 2.26V；
(r) constant-voltage charge 5min under 2.26V voltage；
(s) repetitive cycling step (d)~(r) 250 times；
(t) 12h is stood；
(u) according to the rechargeable energy of step (b)~(c) test method sensing capacitor monomer, discharge energy and interior
Resistance, calculate 250 times circulation at the end of rechargeable energy, discharge energy relative to for the first time recycle at the end of rechargeable energy, electric discharge
The energy conservation rate of energy and corresponding energy efficiency；Make rechargeable energy conservation rate, discharge energy conservation rate according to test data
And the curve graph that energy efficiency changes with cycle-index, if the following conditions are met:
--- charge and discharge energy conservation rate is not less than 90%；
--- internal resistance variation is not more than 1.5 times of nominal value；
--- electroless liquid leakage or obvious profile variation.
It then jumps in next step, is otherwise determined as unqualified and terminates to test.
(v) it repeats step (d)~(u) 40 times, carries out respective record.
It is as shown in Fig. 2 that A producer (e)~(r) step electric current, voltage and power change over time curve, cycle performance curve
As shown in Fig. 3.
Example 2:
Test object: B producer nominal capacity is 2500F lithium ion super capacitor monomer；
(2) test equipment: battery test system (measurement range 0-5V, ± 100A, measuring accuracy: ± 0.05%FS)；It is high
Cryogenic box (- 40~65 DEG C)；The above instrument passes through measurement and calibration.
(3) testing procedure:
(a) it is pre-charged
A) 5h is shelved at (25 ± 2) DEG C；
B) capacitor monomer is charged to by voltage rating 3.8V with rated current 30A.
(b) charge and discharge are initialized
A) capacitor monomer is discharged to 2.2V with nominal discharge power 90W, stands 10s；
B) capacitor monomer charges to 3.8V with specified charge power 90W, stands 10s.
C) step a)~b is repeated) it carries out charge and discharge cycles 3 times, the average value of 3 tests is taken, initial charge energy is recorded
Ecn(Wh), discharge energy Edn’(Wh)。
(c) initial internal resistance is tested
Supercapacitor inner walkway is carried out according to standard " GB/T 34870.1-2017 ".
(d) initialization charging, according to the b of (b)) capacitor monomer charges to 3.8V with 90W invariable power by step；
(e) capacitor monomer is with 50W invariable power electric discharge 1min；
(f) capacitor monomer is with 100W invariable power electric discharge 0.5min；
(g) capacitor monomer is with 150W invariable power electric discharge 0.33min；
(h) capacitor monomer is with 50W invariable power charging 1min；
(i) capacitor monomer is with 100W invariable power charging 0.5min；
(j) capacitor monomer is with 150W invariable power charging 0.33min；
(k) capacitor monomer is with 150W invariable power electric discharge 0.33min；
(l) capacitor monomer is with 100W invariable power electric discharge 0.5min；
(m) capacitor monomer is with 50W invariable power electric discharge 1min；
(n) capacitor monomer is with 150W invariable power charging 0.33min；
(o) capacitor monomer is with 100W invariable power charging 0.5min；
(p) capacitor monomer is with 50W invariable power charging 1min；
(q) capacitor monomer is discharged to voltage with 50W invariable power as 3.25V；
(r) constant-voltage charge 5min under 3.25V voltage；
(s) repetitive cycling step (d)~(r) 250 times；
(t) 12h is stood；
(u) according to the rechargeable energy of step (b)~(c) test method sensing capacitor monomer, discharge energy and interior
Resistance, calculate 250 times circulation at the end of rechargeable energy, discharge energy relative to for the first time recycle at the end of rechargeable energy, electric discharge
The energy conservation rate of energy and corresponding energy efficiency；Make rechargeable energy conservation rate, discharge energy conservation rate according to test data
And the curve graph that energy efficiency changes with cycle-index, if the following conditions are met:
--- charge and discharge energy conservation rate is not less than 85%；
--- internal resistance variation is not more than 2 times of nominal value；
--- electroless liquid leakage or obvious profile variation.
It then jumps in next step, is otherwise determined as unqualified and terminates to test.
(v) it repeats step (d)~(u) 20 times, carries out respective record.
It is as shown in Fig. 4 that B producer (e)~(r) step electric current, voltage and power change over time curve, cycle performance curve
As shown in Fig. 5.
It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description is
System, the specific work process of device and unit can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
More than, above embodiments are only to illustrate the technical solution of the application, rather than its limitations；Although referring to aforementioned
The application is described in detail in embodiment, those skilled in the art should understand that: it still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features；And these are repaired
Change or replaces, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of performance test methods of supercapacitor characterized by comprising
Initialization process is carried out to supercapacitor；
Charge and discharge cycles are carried out to the supercapacitor；Wherein, the charge and discharge link specifically includes: permanent according to the first electric discharge
Power and the first preset time period discharge to the supercapacitor；
It is discharged according to the second electric discharge invariable power and the second preset time period the supercapacitor；
It is discharged according to third electric discharge invariable power and third preset time period the supercapacitor；
It is charged according to the first charging invariable power and first preset time period to the supercapacitor；
It is charged according to the second charging invariable power and second preset time period to the supercapacitor；
It is charged according to third charging invariable power and the third preset time period to the supercapacitor；
It is discharged according to third electric discharge invariable power and the third preset time period the supercapacitor；
It is discharged according to the second electric discharge invariable power and second preset time period the supercapacitor；
It is discharged according to the first electric discharge invariable power and first preset time period the supercapacitor；
It is charged according to third charging invariable power and the third preset time period to the supercapacitor；
It is charged according to the second charging invariable power and second preset time period to the supercapacitor；
It is charged according to the first charging invariable power and first preset time period to the supercapacitor；
The supercapacitor is discharged to the voltage of the supercapacitor equal to preset according to the first electric discharge invariable power
Discharge voltage threshold value；
According to the preset discharge voltage threshold and the 4th preset time period to the supercapacitor constant-voltage charge；
Stewing process is carried out to the supercapacitor according to preset time；
The supercapacitor is tested for the property, corresponding performance curve is drawn according to test data, and according to the survey
Examination data judge the cycle performance of the supercapacitor.
2. a kind of performance test methods of supercapacitor according to claim 1, which is characterized in that described to super electricity
Container carries out initialization process and specifically includes: being pre-charged to supercapacitor；Charge and discharge are initialized to the supercapacitor；It is right
The supercapacitor carries out initial internal resistance test, and records the internal resistance value of the supercapacitor；To the supercapacitor
Carry out initialization charging.
3. a kind of performance test methods of supercapacitor according to claim 2, which is characterized in that described to described super
Grade capacitor carries out charge and discharge cycles and specifically includes: initializing charge and discharge to the supercapacitor according to preset charge and discharge threshold value
Circulation；It obtains and records the supercapacitor and carry out the average initial charge energy peace after the initialization charge and discharge cycles
Equal initial discharge energy.
4. a kind of performance test methods of supercapacitor according to claim 3, which is characterized in that described according to preset
Charge and discharge threshold value specifically includes supercapacitor initialization charge and discharge cycles:
The supercapacitor is discharged to discharge cut-off voltage according to nominal discharge power, stands 10s；
The supercapacitor is charged into charge cutoff voltage according to specified charge power, stands 10s.
5. a kind of performance test methods of supercapacitor according to claim 1, which is characterized in that described to described super
Grade capacitor carries out charge and discharge cycles and specifically includes: carrying out charge and discharge to the supercapacitor according to preset loop threshold value and follows
Ring；It obtains and records the supercapacitor and carry out rechargeable energy and discharge energy after the charge and discharge cycles.
6. a kind of performance test methods of supercapacitor according to claim 1, which is characterized in that the super electricity
Container is tested for the property, and draws corresponding performance curve according to test data, and judge described surpass according to the test data
The cycle performance of grade capacitor specifically includes:
The supercapacitor is obtained according to the charging cycle energy after preset loop threshold value progress charge and discharge cycles and is put
Electric circulating energy, and according to the charging cycle energy, the discharge cycles energy, the average initial charge energy and described
The charge-discharge energy conservation rate and energy efficiency of supercapacitor described in average initial discharge energy balane；And according to the charge and discharge
Electric flux conservation rate and the energy efficiency draw the cycle performance that corresponding performance curve judges the supercapacitor.
7. a kind of performance test methods of supercapacitor according to claim 6, which is characterized in that described to described super
Grade capacitor is tested for the property, and the cycle performance of the supercapacitor is judged according to test data further include:
Judge whether the internal resistance value is greater than corresponding nominal value preset times, if so, determining following for the supercapacitor
Ring performance is unqualified.
8. a kind of performance test methods of supercapacitor according to claim 1, which is characterized in that the preset time
Specially 12 hours.
9. a kind of performance test methods of supercapacitor according to claim 5, which is characterized in that the preset loop
Threshold value is specially 250.
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