CN109633465A - A kind of peak power method for rapidly testing of lithium ion battery - Google Patents
A kind of peak power method for rapidly testing of lithium ion battery Download PDFInfo
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Abstract
The invention belongs to technical field of lithium ion, disclose a kind of SOP method for rapidly testing of lithium ion battery, there is random experiments repeatedly, and time-consuming problem during the experiment for solving existing SOP test method.The present invention is based on JEVS tests, right by a series of Linear Quasi for increasing discharge pulses raising discharge currents and voltage in high-end SOC, reach the target of more accurate test peak discharge current, while avoiding charging direction voltage beyond blanking voltage in high-end SOC.Improved JEVS test method can obtain the peak point current between the SOC whole district of charge and discharge direction simultaneously, and the SOP data that can be tested according to 60s obtain the SOP of 10s, 30s and 60s, save a large amount of testing times, improve the testing efficiency of SOP.The test method can accurately estimate the peak point current of battery at different temperatures simultaneously, still have good adaptability for different types of lithium ion battery.
Description
Technical field
The invention belongs to technical field of lithium ion, and in particular to a kind of peak power (State of lithium ion battery
Of Power, SOP) method for rapidly testing.
Background technique
With the development of the energy and science and technology, power vehicle has become the emphasis direction of various countries' future transportation development, lithium ion
Battery is widely used in electric car energy-storage system because it has many advantages, such as energy density height and at low cost.Electric car
The SOP that should keep battery constantly in state of cyclic operation operation in safe range, tests the SOP of battery various durations, is
Optimal control vehicle provides data foundation.Lithium ion battery peak power it is quick test to prevent battery occur super-charge super-discharge and
The reasonability for guaranteeing that battery system uses has great importance.
The peak power of lithium ion battery and state-of-charge (State of Charge, SOC), temperature and duration etc.
Many factors are related, and wherein peak power can be characterized with peak point current.The SOP be battery currently certain duration in most
Big input or output power.(1) invariable power (electric current), which is tested, to be specifically included that the method for battery SOP test at present: random selection
One power (electric current) carries out charge or discharge to blanking voltage to the battery under some state-of-charge, records experimental period,
By change power (electric current) size repeat test, make record the time gradually approach required peak power (electric current) it is lasting when
Between.Invariable power (electric current) test is also referred to as directly tested, although precision is high, process is cumbersome, and random experiment causes to survey repeatedly
It is also extremely low to try efficiency；(2) Japan's JEVS power test: different electric currents are chosen, the battery under some state-of-charge is handed over
For charge and discharge, peak point current is obtained by fitting voltage and current relationship.But peak is much larger than for high-end SOC peak discharge current
The case where being worth charging current, the applicability of this test method is poor；(3) hybrid power pulse ability characteristics (HPPC) are tested:
Under different state-of-charges, alternately charge or discharge are carried out to battery, pass through battery charging ohmic internal resistance or electric discharge ohmic internal resistance
Calculate battery peak electric current.But the test method does not have setting electric current limitation, may damage the service life of battery.
It needs to rely on a large amount of accurate experimental datas in battery practical application, can be consumed largely using direct method of testing
Time damages the service life of battery.Though HPPC test and Japan JEVS test improve testing efficiency, since HPPC is surveyed
Sing plus is used, precision is lower, and the precision of Japan JEVS test is very poor in high-end SOC.
Summary of the invention
For defect present in existing test method, the purpose of the present invention is to provide a kind of SOP of lithium ion battery
Method for rapidly testing improves on the basis of Japanese JEVS test, in high-end SOC by being filled with identical discharge capacity,
Guarantee that SOC is constant, while increasing a series of discharge pulses, improves the precision in high-end SOC test peak discharge current.And it digs
Pick improves JEVS test and the potential relationship of duration, and finding a kind of can quickly test various durations SOP and high-precision
Method, be conducive to promoted battery utilization rate and reduce vehicle operating cost.
To achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of peak power of lithium ion battery (SOP) method for rapidly testing, includes the following steps:
S1, it is directed to target lithium ion battery (lithium battery), judges the initial state-of-charge of lithium ion battery；
When the initial state-of-charge of lithium ion battery is less than 70%, step S2 is executed；
When the initial state-of-charge of lithium ion battery is greater than or equal to 70%, step S3 and S4 are executed；
S2, Japan JEVS test is carried out to lithium ion battery, obtain the peak power test data of lithium ion battery, in turn
Obtain the peak power of lithium ion battery；
S3, peak power test is carried out to lithium ion battery using following steps:
S31, Japan JEVS test is carried out to lithium ion battery, duration of charge and discharge period are t s；
S32, electric discharge t s is carried out to lithium ion battery with the electric current I of 2C, be then allowed to stand；
S33, capacity Q is filled with to lithium ion battery with the constant current of 0.5C, be then allowed to stand；
S34, step S32 and S33 are repeated 3-4 times, but are often repeated once, the discharge-rate of electric current I increases in step S32
2C；
In S4, recording step S31, the electric current and voltage value of lithium ion battery at the end of charging t s are carried out every time, and every
It is secondary carry out electric discharge t s at the end of lithium ion battery electric current and voltage value；
In recording step S32 and S34, to lithium ion battery carry out electric discharge t s at the end of, the voltage value of lithium ion battery and
Current value；
Using the current value and voltage value of the above-mentioned record of straight line fitting, then charge cutoff voltage and discharge cut-off voltage are distinguished
Corresponding current value is the peak charging current and peak discharge current for the duration being t s；The peak power (SOP) is used
State the peak charging current and peak discharge current characterization of acquisition；
To in step S31, carry out every time charging t s during lithium ion battery electric current and voltage value, and every time into
The electric current of lithium ion battery and voltage value carry out data sampling record during row electric discharge t s；
To in step S32 and S34, lithium ion battery carries out the voltage value and electric current of lithium ion battery during electric discharge t s
Value carries out data sampling record；
Using numerical analysis, voltage value and electric current Value Data to above-mentioned data sampling record carry out linear fit and (retouch
Point), charge cutoff voltage and the corresponding peak charging current of discharge cut-off voltage and peak discharge current are found out, lithium is obtained
Peak charging current and peak discharge current of the ion battery in any duration, and to characterize peak power, it realizes fast
The SOP of speed test lithium ion battery.
Based on the above technical solution, described in step S2: carrying out the step of Japan JEVS test to lithium ion battery
Suddenly are as follows:
S21, charging t s is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S22, electric discharge t s is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S23, charging t s is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S24, electric discharge t s is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S25, charging t s is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S26, electric discharge t s is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S27, charging t s is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand；
S28, electric discharge t s is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand.
Based on the above technical solution, described in step S31: carrying out the tool of Japan JEVS test to lithium ion battery
Body step are as follows:
Step S311: charging t s is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S312: electric discharge t s is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S313: charging t s is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand；
Step S314: electric discharge t s is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand.
Based on the above technical solution, the capacity Q in step S33 is calculated according to formula (1),
The wherein unit of I are as follows: the unit of A, t are as follows: the unit of s, Q are as follows: Ah.
Based on the above technical solution, the duration of the peak power method for rapidly testing of the lithium ion battery
T generally takes the numerical value such as 10,30 or 60.
Based on the above technical solution, the test temperature of the peak power method for rapidly testing of the lithium ion battery
It is 10 DEG C, 20 DEG C or 45 DEG C.
Based on the above technical solution, the lithium ion battery is metatitanic acid lithium dynamical battery or ternary material power electric
Pond.
Based on the above technical solution, 10ms is divided between the data sampling of the data sampling record.
The present invention has following advantageous effects:
Avoid in high-end SOC: in alternately charge and discharge, peak value charging voltage exceeds blanking voltage；By increasing by a system
Column discharge pulse, linear fit voltage-current relationship obtain peak discharge current, improve the measuring accuracy of SOP；
The SOP test data for being t s using the duration obtains any SOP data of the duration within t s, keeps away
Exempt from largely to repeat random experiment, improves the testing efficiency of SOP；
The SOP method for rapidly testing of lithium ion battery of the present invention, estimated accuracy control within 10%.
The method of the invention has good adaptability for the different type lithium ion battery under different temperatures.
Detailed description of the invention
The present invention has following attached drawing:
Fig. 1 is based on the SOP testing process schematic diagram for improving JEVS test method；
Fig. 2 is the fitting result that SOC80% improves JEVS test under room temperature；
Fig. 3 is the SOP experimental result that JEVS test is improved under room temperature；
Fig. 4 is the SOP test error that JEVS test is improved under room temperature；
Fig. 5 is the SOP estimated result that SOC50% estimates various durations under room temperature；
Fig. 6 is the evaluated error that SOC50% estimates various durations SOP under room temperature；
Fig. 7 is the SOP experimental result that SOC50% is tested under different temperatures；
Fig. 8 is the SOP test error that SOC50% is tested under different temperatures.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings.
As shown in Figure 1, the SOP method for rapidly testing of lithium ion battery of the present invention, is based on Japan's JEVS method of testing,
From the voltage and current value of t s pulse test data acquisition various durations, straight line fitting various durations voltage electricity is utilized
The curved line relation of stream obtains the SOP of various durations, realizes the quick test of SOP, specific steps are as follows:
A kind of peak power of lithium ion battery (SOP) method for rapidly testing, includes the following steps:
S1, it is directed to target lithium ion battery (lithium battery), judges the initial state-of-charge of lithium ion battery；
When the initial state-of-charge of lithium ion battery is less than 70%, step S2 is executed；
When the initial state-of-charge of lithium ion battery is greater than or equal to 70%, step S3 and S4 are executed；
S2, Japan JEVS test is carried out to lithium ion battery, obtain the peak power test data of lithium ion battery, in turn
Obtain the peak power of lithium ion battery；
S3, peak power test is carried out to lithium ion battery using following steps:
S31, Japan JEVS test is carried out to lithium ion battery, duration of charge and discharge period are t s；
S32, electric discharge t s is carried out to lithium ion battery with the electric current I of 2C, be then allowed to stand；
S33, capacity Q is filled with to lithium ion battery with the constant current of 0.5C, be then allowed to stand；
S34, step S32 and S33 are repeated 3-4 times, but are often repeated once, the discharge-rate of electric current I increases in step S32
2C；
In S4, recording step S31, the electric current and voltage value of lithium ion battery at the end of charging t s are carried out every time, and every
It is secondary carry out electric discharge t s at the end of lithium ion battery electric current and voltage value；
In recording step S32 and S34, to lithium ion battery carry out electric discharge t s at the end of, the voltage value of lithium ion battery and
Current value；
Using the current value and voltage value of the above-mentioned record of straight line fitting, then charge cutoff voltage and discharge cut-off voltage are distinguished
Corresponding current value is the peak charging current and peak discharge current for the duration being t s；The peak power (SOP) is used
State the peak charging current and peak discharge current characterization of acquisition；
To in step S31, carry out every time charging t s during lithium ion battery electric current and voltage value, and every time into
The electric current of lithium ion battery and voltage value carry out data sampling record during row electric discharge t s；
To in step S32 and S34, lithium ion battery carries out the voltage value and electric current of lithium ion battery during electric discharge t s
Value carries out data sampling record；
Using numerical analysis, voltage value and electric current Value Data to above-mentioned data sampling record carry out linear fit and (retouch
Point), charge cutoff voltage and the corresponding peak charging current of discharge cut-off voltage and peak discharge current are found out, lithium is obtained
Peak charging current and peak discharge current of the ion battery in any duration, and to characterize peak power, it realizes fast
The SOP of speed test lithium ion battery.
Based on the above technical solution, described in step S2: carrying out the step of Japan JEVS test to lithium ion battery
Suddenly are as follows:
S21, charging t s is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S22, electric discharge t s is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S23, charging t s is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S24, electric discharge t s is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S25, charging t s is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S26, electric discharge t s is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S27, charging t s is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand；
S28, electric discharge t s is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand.
Based on the above technical solution, described in step S31: carrying out the tool of Japan JEVS test to lithium ion battery
Body step are as follows:
Step S311: charging t s is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S312: electric discharge t s is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S313: charging t s is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand；
Step S314: electric discharge t s is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand.
Based on the above technical solution, the capacity Q in step S33 is calculated according to formula (1),
The wherein unit of I are as follows: the unit of A, t are as follows: the unit of s, Q are as follows: Ah.
Based on the above technical solution, the duration of the peak power method for rapidly testing of the lithium ion battery
T generally takes the numerical value such as 10,30 or 60.
Based on the above technical solution, the test temperature of the peak power method for rapidly testing of the lithium ion battery
It is 10 DEG C, 20 DEG C or 45 DEG C.
Based on the above technical solution, the lithium ion battery is metatitanic acid lithium dynamical battery or ternary material power electric
Pond.
Based on the above technical solution, 10ms is divided between the data sampling of the data sampling record.
The state-of-charge for adjusting lithium ion battery is as follows to the method and step for setting initial state-of-charge: first with 0.5C's
Electric current charges to upper limit voltage 4.2V to lithium ion battery, then turns constant pressure and charge to electric current less than 0.05A, most to lithium ion battery
Constant current is used to adjust lithium ion battery to the initial state-of-charge of setting with the multiplying power of 1C afterwards.
The peak power method for rapidly testing of lithium ion battery of the present invention, the lithium ion battery can be in electric vehicles
It is used in, can be metatitanic acid lithium dynamical battery or ternary material power battery.
The peak power of different type automobile is different, generally mixes with power car, pure electric vehicle and hybrid power passenger car
Power test pulsewidth is respectively 10s, 30s and 60s, so the peak power duration of lithium ion battery of the present invention is general
Take the numerical value such as 10s, 30s or 60s.
Since the positive and negative pole material of different type lithium ion battery is different, input of the various batteries under same state-of-charge
Or output power can have differences, but for a certain battery, SOP method for rapidly testing of the present invention can be obtained quickly
Take its peak power.
Following specific embodiments are illustrated by taking the ternary material dynamic lithium battery of certain company as an example.
Test target battery is 2.75Ah ternary material dynamic lithium battery, by taking SOC80% as an example.Battery is according to following operating condition
Carry out peak power test:
First with the constant-current charge of 0.5C to upper limit voltage 4.2V, then turns constant-voltage charge to electric current and be less than 0.05A；With 1C's
The capacitance of 0.55Ah is released in constant current, obtains the lithium battery of SOC80%；
Constant current is used to carry out alternately charge and discharge, duration of charge and electric discharge to lithium battery with the multiplying power of 0.5C and 1C
Duration is 10s, meanwhile, to each charging 10s at the end of lithium battery electric current and voltage carry out data record, as filling
Electric data；The electric current of lithium battery and voltage carry out data record at the end of to each electric discharge 10s, as discharge data；
Then electric discharge 10s is carried out to lithium battery with the electric current I of 2C, uses constant current (constant current) with the multiplying power of 0.5C to lithium
Battery is filled with capacitance 0.0153Ah；
Electric discharge 10s is carried out to lithium battery with the electric current I of 4C, capacitance is filled with to lithium battery with the constant current of 0.5C
0.0306Ah；
Electric discharge 10s is carried out to lithium battery with the electric current I of 6C, capacitance is filled with to lithium battery with the constant current of 0.5C
0.0459Ah；
Electric discharge 10s is carried out to lithium battery with the electric current I of 8C, capacitance is filled with to lithium battery with the constant current of 0.5C
0.0612Ah。
Voltage at the end of carrying out electric discharge 10s to each lithium ion battery and electric current carry out data record, on linear fit
The voltage and electric current for stating record obtain SOC80% under room temperature and improve JEVS test 10s peak discharge current and peak charging current
Fitting result, as shown in Figure 2.
It is observed that improved JEVS test is by increasing discharge pulse test, hence it is evident that improve fitting crest discharge
The precision of electric current.The SOP test result and survey that JEVS test is improved under room temperature in the SOC whole district can be obtained based on above-mentioned test
Error is tried, it is as shown in Figure 3 and Figure 4 respectively.It can be found that improving precision of the JEVS test in the SOC whole district is respectively less than 10%.
In the use process of lithium ion battery for electric vehicle, it is desirable to provide the SOP of various durations, with
For SOC50%, the peak point current of 60s is measured based on Japanese JEVS, 10s and 30s electric current is chosen from 60s test data
And corresponding voltage, it is fitted the relationship of 10s, 30s and 60s voltage and electric current respectively, obtains SOC50% under room temperature and estimates not
Estimate that the SOP error of various durations exists respectively as shown in Figure 5 and Figure 6 with the SOP estimated result and error of duration
Within 10%.Consider that peak point current at different temperatures is varied, the peak value electricity of SOC50% is tested at 10 DEG C and 45 DEG C
Stream obtains the experimental result and test error of different temperatures SOC50% test SOP, respectively as shown in Figure 7 and Figure 8, it can be found that
This patent the method tests the error of SOP still within 10% at different temperatures.
The invention discloses a kind of peak power method for rapidly testing of lithium ion battery, the method is based on improving JEVS
Test method obtains the voltage and current value of various durations from test data, does not require battery individually to test, obtain difference and hold
The SOP of continuous time, and battery is not necessarily to a large amount of random experiments of re-test, improves the testing efficiency of battery.
The SOP test that partial state of charge is completed in Japan JEVS test is chosen, a large amount of randomnesss is avoided to repeat to test；In height
End SOC improves JEVS test method, increases discharge pulse test in the case where guaranteeing that state-of-charge is constant, and reduction is adopted
With the error generated when linear fit by polarization resistance and the non-linear relationship of discharge current, measuring accuracy is improved, is kept away simultaneously
Exempting from battery, charging voltage is beyond secure threshold in alternately charge and discharge, in the interior validation test precision of the different temperatures SOC whole district；Benefit
The SOP that various durations within 60s are estimated with the data of 60s test SOP, verifies estimated result, improves testing efficiency；This
The SOP method for rapidly testing of the lithium ion battery is invented, measuring accuracy controls within 10%.
Obviously, described above is only specific embodiment that the present invention is done, but protection scope of the present invention not office
It is limited to this, for being familiar with any person skilled in the art, amplifies out other various forms of changes on the basis of the above description
Change or change, should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with claim
Subject to protection scope.
The content not being described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (8)
1. a kind of peak power method for rapidly testing of lithium ion battery, which comprises the steps of:
S1, it is directed to target lithium ion battery, judges the initial state-of-charge of lithium ion battery；
When the initial state-of-charge of lithium ion battery is less than 70%, step S2 is executed；
When the initial state-of-charge of lithium ion battery is greater than or equal to 70%, step S3 and S4 are executed；
S2, Japan JEVS test is carried out to lithium ion battery, obtain the peak power test data of lithium ion battery, and then obtain
The peak power of lithium ion battery；
S3, peak power test is carried out to lithium ion battery using following steps:
S31, Japan JEVS test is carried out to lithium ion battery, duration of charge and discharge period are ts；
S32, electric discharge ts is carried out to lithium ion battery with the electric current I of 2C, be then allowed to stand；
S33, capacity Q is filled with to lithium ion battery with the constant current of 0.5C, be then allowed to stand；
S34, step S32 and S33 are repeated 3-4 times, but are often repeated once, the discharge-rate of electric current I increases 2C in step S32；
In S4, recording step S31, carry out the electric current and voltage value of lithium ion battery at the end of charging ts every time, and every time into
The electric current and voltage value of lithium ion battery at the end of row electric discharge ts；
In recording step S32 and S34, at the end of carrying out electric discharge ts to lithium ion battery, the voltage value and electric current of lithium ion battery
Value；
Using the current value and voltage value of the above-mentioned record of straight line fitting, then charge cutoff voltage and discharge cut-off voltage respectively correspond
Current value be the duration be ts peak charging current and peak discharge current；The peak of the above-mentioned acquisition of the peak power
It is worth charging current and peak discharge current characterization；
To in step S31, carrying out the electric current and voltage value of lithium ion battery during charging ts every time, and discharge every time
The electric current of lithium ion battery and voltage value carry out data sampling record during ts；
To in step S32 and S34, lithium ion battery carries out the voltage value of lithium ion battery and current value during electric discharge ts and carries out
Data sampling record；
Using numerical analysis, linear fit is carried out to the voltage value and electric current Value Data of above-mentioned data sampling record, finds out charging
It is in office to obtain lithium ion battery for blanking voltage and the corresponding peak charging current of discharge cut-off voltage and peak discharge current
The peak charging current and peak discharge current of meaning duration, and to characterize peak power, realize quickly test lithium ion
The SOP of battery.
2. the peak power method for rapidly testing of lithium ion battery as described in claim 1, it is characterised in that: institute in step S2
It states: the step of Japan JEVS test is carried out to lithium ion battery are as follows:
S21, charging ts is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S22, electric discharge ts is carried out to lithium ion battery using the electric current of 0.5C, be then allowed to stand；
S23, charging ts is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S24, electric discharge ts is carried out to lithium ion battery using the electric current of 1C, be then allowed to stand；
S25, charging ts is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S26, electric discharge ts is carried out to lithium ion battery using the electric current of 1.5C, be then allowed to stand；
S27, charging ts is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand；
S28, electric discharge ts is carried out to lithium ion battery using the electric current of 2C, be then allowed to stand.
3. the peak power method for rapidly testing of lithium ion battery as described in claim 1, it is characterised in that: in step S31
It is described: the specific steps of Japan JEVS test are carried out to lithium ion battery are as follows:
Step S311: charging ts is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S312: electric discharge ts is carried out to lithium ion battery using the electric current of 0.5C, is then allowed to stand；
Step S313: charging ts is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand；
Step S314: electric discharge ts is carried out to lithium ion battery using the electric current of 1C, is then allowed to stand.
4. the peak power method for rapidly testing of lithium ion battery as described in claim 1, it is characterised in that: in step S33
Capacity Q according to formula (1) calculate,
The wherein unit of I are as follows: the unit of A, t are as follows: the unit of s, Q are as follows: Ah.
5. the peak power method for rapidly testing of the lithium ion battery as described in claim 1-4 any claim, feature
Be: the duration t of the peak power method for rapidly testing of the lithium ion battery takes 10,30 or 60.
6. the peak power method for rapidly testing of the lithium ion battery as described in claim 1-4 any claim, feature
Be: the test temperature of the peak power method for rapidly testing of the lithium ion battery is 10 DEG C, 20 DEG C or 45 DEG C.
7. the peak power method for rapidly testing of the lithium ion battery as described in claim 1-4 any claim, feature
Be: the lithium ion battery is metatitanic acid lithium dynamical battery or ternary material power battery.
8. the peak power method for rapidly testing of lithium ion battery as described in claim 1, it is characterised in that: the data are adopted
10ms is divided between the data sampling of sample record.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111123109A (en) * | 2019-12-05 | 2020-05-08 | 恒大新能源汽车科技(广东)有限公司 | Method and device for testing peak current of power battery |
| CN111308163A (en) * | 2020-02-21 | 2020-06-19 | 天津力神电池股份有限公司 | Method for determining pulse discharge maximum current of lithium ion power battery |
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| CN111123109A (en) * | 2019-12-05 | 2020-05-08 | 恒大新能源汽车科技(广东)有限公司 | Method and device for testing peak current of power battery |
| CN111458650A (en) * | 2020-01-15 | 2020-07-28 | 合肥国轩高科动力能源有限公司 | Method for estimating peak power of lithium ion power battery system |
| CN111458650B (en) * | 2020-01-15 | 2022-11-15 | 合肥国轩高科动力能源有限公司 | Method for estimating peak power of lithium ion power battery system |
| CN111308163A (en) * | 2020-02-21 | 2020-06-19 | 天津力神电池股份有限公司 | Method for determining pulse discharge maximum current of lithium ion power battery |
| CN111308163B (en) * | 2020-02-21 | 2022-08-30 | 青岛力神新能源科技有限公司 | Method for determining pulse discharge maximum current of lithium ion power battery |
| CN111890985A (en) * | 2020-06-30 | 2020-11-06 | 汉腾汽车有限公司 | Method for adjusting available power of battery of electric vehicle |
| CN112034354A (en) * | 2020-08-31 | 2020-12-04 | 蜂巢能源科技有限公司 | Battery power switching method and device, computer equipment and storage medium |
| CN112379289A (en) * | 2020-10-31 | 2021-02-19 | 浙江锋锂新能源科技有限公司 | Method for testing maximum current of lithium ion battery |
| CN112379289B (en) * | 2020-10-31 | 2024-03-29 | 浙江锋锂新能源科技有限公司 | Method for testing maximum current of lithium ion battery |
| CN112526350A (en) * | 2020-12-11 | 2021-03-19 | 哈尔滨工业大学（深圳） | Lithium ion battery peak power prediction method considering thermal effect influence |
| CN112526350B (en) * | 2020-12-11 | 2022-05-27 | 哈尔滨工业大学（深圳） | Lithium ion battery peak power prediction method considering thermal effect influence |
| CN113504476A (en) * | 2021-07-23 | 2021-10-15 | 湖北亿纬动力有限公司 | Power battery peak power testing method, device and system |
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