CN108550928A - The detection method and system of electric vehicle, charging/discharging apparatus, battery SOH - Google Patents
The detection method and system of electric vehicle, charging/discharging apparatus, battery SOH Download PDFInfo
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- CN108550928A CN108550928A CN201810474575.5A CN201810474575A CN108550928A CN 108550928 A CN108550928 A CN 108550928A CN 201810474575 A CN201810474575 A CN 201810474575A CN 108550928 A CN108550928 A CN 108550928A
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- 238000007599 discharging Methods 0.000 title claims abstract description 64
- 238000001514 detection method Methods 0.000 title claims abstract description 29
- 230000005611 electricity Effects 0.000 claims description 20
- 238000004590 computer program Methods 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 229910052493 LiFePO4 Inorganic materials 0.000 description 4
- 229910002097 Lithium manganese(III,IV) oxide Inorganic materials 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 241000208340 Araliaceae Species 0.000 description 2
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 2
- 235000003140 Panax quinquefolius Nutrition 0.000 description 2
- 235000008434 ginseng Nutrition 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to the detection method and system of a kind of electric vehicle, charging/discharging apparatus, battery SOH, the detection method of battery SOH includes：The sign on of SOH calibration is received, and is shaken hands with the BMS modules of electric vehicle；Receive battery rated capacity；It determines calibration strategy, and controls battery and execute calibration strategy, control battery executes calibration strategy and is：First control battery enters the charging stage, until meet charge cutoff condition, then controls battery and enters the standing stage, finally controls battery and enters discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime marked capacity；According to battery rated capacity and marked capacity, battery SOH is calculated；The calculated battery SOH of output.Implement technical scheme of the present invention, the error of acquired battery SOH value is smaller, and precision is higher.
Description
Technical field
The present invention relates to the detections of electric vehicle field more particularly to a kind of electric vehicle, charging/discharging apparatus, battery SOH
Method and system.
Background technology
In recent years, with the development of energy revolution, electric vehicle is gradual to obtain as a kind of Second Revolution of orthodox car industry
It has arrived and has flourished.The Zao Che main forces of electric vehicle are added in increasing battery enterprise and Automobile Enterprises, accelerate electronic vapour
Vehicle flourishes.However, as further types of electric vehicle comes into the market, there is various ask in use in vehicle
Topic, wherein the power performance of the as electric automobile power battery system of core the most.
Heart of the power battery as electric vehicle, with the test of vehicle various work condition environments in use,
Different degrees of decaying can occur at any time for power performance.The decaying of power battery performance includes can recovered part and irrecoverable
Part, wherein can recovered part can by finding in time, in time safeguard eliminate the partial properties decaying.And how in time, accurately
Estimation battery decaying situation, i.e. battery SOH (state of health, health degree), for battery management system BMS
Be one be difficult the problem of.And the accuracy of battery SOH estimations directly influences battery system SOC (State of
Charge, state-of-charge) estimation accuracy.Therefore when battery performance is decayed, BMS is inaccurate to the estimation of battery SOH
It then will appear inaccurate so as to cause the SOC data estimations of BMS, the person that may lead to car operation is in using vehicle processes, in BMS
When informing that battery system SOC also has relatively margin, the operations such as vehicle cannot start or vehicle cannot be accelerated and be climbed,
Severe patient may cause vehicle to stop power output in normal operation, and situation of sitting on the way occurs in vehicle.
Current line generally obtains the battery SOH value of electric vehicle in the following ways in the industry：It is filled by the history of battery
Discharge data, the primary data and same type before control cell manufacture or the laboratory test data with batch battery, utilize
Kalman filtering, artificial neural network scheduling algorithm are estimated.But due to the diversity and electricity of battery actual operating mode
Pond internal structure, the complexity of electrochemical principle so that existing evaluation method is extremely inaccurate to the estimation of battery SOH value, electricity
The practical health status in pond differs larger with the battery SOH value of estimation, and with the extension of time, the error can be increasing.
Invention content
To solve the technical problem that SOH estimated values are inaccurate in the prior art, a kind of electric vehicle of present invention offer, charge and discharge
Equipment, the detection method and system of battery SOH can get the higher battery SOH value of precision.
The technical solution adopted by the present invention to solve the technical problems is：A kind of detection method of battery SOH is constructed, electricity is worked as
After electrical automobile accesses the direct current rifle of charging/discharging apparatus, charging/discharging apparatus follows the steps below：
Step S11. receives the sign on of SOH calibration input by user, and according to the sign on, with electric vehicle
BMS modules shake hands；
Step S12. receives the battery rated capacity that the BMS modules are sent；
Step S13. determines calibration strategy, and controls battery and execute the calibration strategy, wherein described in control battery executes
Calibration strategy is：First control battery enters the charging stage, until meeting charge cutoff condition, then controls battery and enters standing rank
Section finally controls battery and enters discharge regime, until meeting electric discharge cut-off condition, and obtains battery and holds in the calibration of discharge regime
Amount；Alternatively, first control battery enters discharge regime, until meeting electric discharge cut-off condition, then controls battery and enter the standing stage, most
Control battery enters the charging stage afterwards, until meet charge cutoff condition, and obtain battery the charging stage marked capacity；
Step S14. calculates battery SOH according to the battery rated capacity and the marked capacity；
Step S15. exports calculated battery SOH.
Preferably, the step S13 includes：
Step S131. obtains the current SOC of battery, and judges whether the current SOC is more than 50%, if so, executing
Step S132；If it is not, thening follow the steps S133；
Step S132. first controls battery and enters the charging stage, until meet charge cutoff condition, then controls battery into meditation
Set the stage, finally control battery enter discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime mark
Then constant volume executes step S14；
Step S133. first controls battery and enters discharge regime, until meeting electric discharge cut-off condition, then controls battery into meditation
Set the stage, finally control battery and enter the charging stage, until meet charge cutoff condition, and obtain battery the charging stage mark
Then constant volume executes step S14.
Preferably, before the step S11, further include：
Step S10. control accessory power supplys are the BMS module for power supply.
Preferably, the step S13 further includes：
In the charging stage, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
In the stage of standing, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
In discharge regime, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
Moreover, the step S15 further includes：
Export battery voltage information, the battery temperature information in each stage.
Preferably, in the step S13, control battery the step of entering the standing stage, includes：
Control battery enters standing stage of preset duration, ranging from 5-60 minutes of the preset duration.
Preferably, in the step S14, battery SOH is calculated according to following formula：
Wherein, C is the marked capacity, C0For the battery rated capacity.
The present invention also constructs a kind of detection method of battery SOH, after electric vehicle accesses the direct current rifle of charging/discharging apparatus,
The BMS modules of electric vehicle follow the steps below：
Step S21. shakes hands with charging/discharging apparatus；
Step S22. sends battery rated capacity to charging/discharging apparatus；
The calibration strategy that step S23. is determined according to charging/discharging apparatus, control battery execute the calibration strategy, wherein control
Battery processed executes the calibration strategy：First control battery enters the charging stage, until meeting charge cutoff condition, then controls electricity
Pond enters the standing stage, finally controls battery and enters discharge regime, until meeting electric discharge cut-off condition, and obtains battery and is discharging
The marked capacity in stage；Alternatively, first control battery enter discharge regime, until meet electric discharge cut-off condition, then control battery into
Enter the standing stage, finally controls battery and enter the charging stage, until meeting charge cutoff condition, and obtain battery in the charging stage
Marked capacity；
Acquired marked capacity is sent to charging/discharging apparatus by step S24., so that the charging/discharging apparatus is according to
Battery rated capacity and the marked capacity calculate battery SOH, and export the battery SOH.
The present invention also constructs a kind of charging/discharging apparatus, including first memory and first processor, the first processor
The step of the detection method of battery SOH as previously discussed is realized when for executing the computer program stored in the first memory
Suddenly.
The present invention also constructs a kind of electric vehicle, including battery and BMS modules, and the BMS modules include second memory
And second processor, the second processor for realized when executing the computer program stored in the second memory such as with
The step of detection method of the upper battery SOH.
The present invention also constructs a kind of detecting system of battery SOH, including above-described charging/discharging apparatus and the above
Electric vehicle.
Implement technical scheme of the present invention, returns factory without carrying out electric vehicle, torn open without to its power battery
Solution, so that it may based on electric automobile whole, using charging/discharging apparatus to the battery of electric vehicle carry out three phases (for example,
Charging stage, stand the stage, discharge regime) control, and obtain battery three phases marked capacity, then according to mark
The rated capacity of constant volume and battery calculates battery SOH value, this to pass through compared to the battery SOH value obtained by estimation mode
The error for calculating the battery SOH value obtained is smaller, and precision is higher.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the flow chart of the detection method embodiment one of battery SOH of the present invention；
Fig. 2 is the flow chart of step S13 embodiments one in Fig. 1；
Fig. 3 is the flow chart of the detection method embodiment two of battery SOH of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the flow chart of the detection method embodiment one of battery SOH of the present invention, the detection of the battery SOH of the embodiment
Method is applied in the charging/discharging apparatus of electric vehicle, after electric vehicle accesses the direct current rifle of charging/discharging apparatus, that is, will be electronic
After automobile carries out physical connection with charging/discharging apparatus, follow the steps below：
Step S11. receives the sign on of SOH calibration input by user, and according to sign on, with electric vehicle
BMS modules are shaken hands；
In this step, it should be noted that, in a kind of practical application, the charging/discharging apparatus as it is independent, for examining
The equipment for surveying SOH value, may be provided at the after-sale service website of electric vehicle, charge and discharge website of automobile etc..Another practical
In, which may be provided at the charge and discharge website of electric vehicle, both can be used to carry out electric vehicle normal
Charge and discharge, it is also possible to be detected to the SOH value of electric vehicle.Moreover, in the practical application, the control of charging/discharging apparatus
There are two types of communication protocols for storage in module (monitoring unit) and the BMS modules of electric vehicle, wherein uses the first communication protocols
View can carry out normal charge and discharge to electric vehicle, and SOH marks can be carried out to the battery of electric vehicle using second of communication protocol
It is fixed, that is, detect battery SOH value.In addition, the sign on about SOH calibration, user can be arranged by triggering in charging/discharging apparatus
On specific keys input the sign on, can also be started to input this by triggering specific virtual key in cell phone application
Instruction, alternatively, by being configured to charging/discharging apparatus so that charging/discharging apparatus input by user starts to charge up finger receiving
After order, SOH demarcation flows are first carried out, after SOH demarcation flows, then carry out normal charge and discharge flow.
About handshake operation, it should be noted that, intercourse identity in addition to charging/discharging apparatus and BMS modules
Outside, further include：After user has selected SOH demarcation flows, charging/discharging apparatus determines communication protocol corresponding to SOH demarcation flows
Version number, and the version number is sent to the BMS modules of electric vehicle, in this way, charging/discharging apparatus can with BMS module both sides
With the SOH communication protocols demarcated communicate.
Step S12. receives the battery rated capacity that BMS modules are sent；Further, the electricity that BMS modules are sent also is received
Pond monomer highest allows charging voltage and the minimum permission discharge voltage of battery cell；
In this step, after carrying out handshake operation, charging/discharging apparatus and BMS modules can mutually carry out the ginseng of SOH calibration
Number configuration operation specifically includes charge parameter configuration and the discharge parameter configuration of battery, wherein charge parameter configuration can be according to state
Mark GB/T 27930 requires content to be configured, it may for example comprise：Charging/discharging apparatus receives battery rated capacity, electricity from BMS modules
Pond monomer highest allows charging voltage, battery highest to allow charging current, highest that charging total voltage, highest is allowed to allow charging electricity
Temperature, and send remaining charge power etc. to BMS modules.Discharge parameter configures：Charging/discharging apparatus receives electricity from BMS modules
The minimum permission discharge voltage of pond rated capacity, battery cell, battery highest allow discharge current, it is minimum allow discharge total voltage,
Highest allows discharge temp, and sends socking out power etc. to BMS modules.In addition, allowing to charge about battery cell highest
Voltage, different types of battery correspond to different values, for example, LiFePO4 is 3.7 ± 0.1V, ternary lithium is 4.2 ± 0.1V, titanium
Sour lithium is 2.8 ± 0.1V, and LiMn2O4 is 4.2 ± 0.1V；About the minimum permission discharge voltage of battery cell, different types of battery
Also different values is corresponded to, for example, LiFePO4 is 2.5 ± 0.1V, ternary lithium is 2.7 ± 0.1V, and lithium titanate is 1.6 ± 0.1V,
LiMn2O4 is 2.7 ± 0.1V.
Step S13. determines calibration strategy, and controls battery and execute calibration strategy, wherein control battery executes calibration strategy
For：First control battery enters the charging stage, until meeting charge cutoff condition, then controls battery and enters the standing stage, finally controls
Battery processed enters discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime marked capacity；Alternatively,
First control battery enters discharge regime, until meeting electric discharge cut-off condition, then controls battery and enters the standing stage, finally control electricity
Pond enters the charging stage, until meet charge cutoff condition, and obtain battery the charging stage marked capacity；
In this step, calibration strategy includes following two：Charging-standing-electric discharge, or, electric discharge-standing-charging.
Each calibration strategy includes three phases, wherein in the stage of standing, the main loop of power circuit of charging/discharging apparatus is exported to battery
Current Voltage be 0.Preferably, the time in standing stage can be also set, and specifically, control battery enters the quiet of preset duration
It sets the stage, ranging from 5-60 minutes of preset duration, for example, standing 20 minutes；In charging stage or discharge regime, charge and discharge are set
Standby electric current that can be certain carries out charge or discharge to power battery, which is, for example, 0.1-2C0, wherein 0.1-2 is
Charge/discharge multiplying power, C0For the rated capacity of battery.In addition, when controlling the battery one of calibration strategy of execution, electricity is also obtained
Marked capacity of the pond in the phase III, if the phase III is discharge regime, acquired marked capacity is battery in electric discharge rank
The discharge capacity of section；If the phase III is the charging stage, acquired marked capacity is that charging of the battery in the charging stage is held
Amount.
Step S13. calculates battery SOH according to battery rated capacity and marked capacity；
In this step, specifically battery SOH can be calculated according to following formula：
Wherein, C is marked capacity, C0For battery rated capacity.
Step S15. exports calculated battery SOH.
In this step, calculated battery SOH can be defeated by the display screen or user APP of charging/discharging apparatus or backstage
Go out to car owner and/or technical staff, so that the battery system of electric vehicle is analyzed and evaluated in car owner or technical staff.Into one
Step ground, can also be sent to BMS modules, so that the meter of SOH value and SOH that BMS modules are estimated itself by the SOH value calculated
Calculation value is compared, and to be modified to the estimated value of SOH, and is calibrated to its SOH evaluation method.
In one alternate embodiment, charge cutoff condition is：Battery cell ceiling voltage, which reaches battery cell highest, to be permitted
Perhaps charging voltage；Electric discharge cut-off condition be：Battery cell minimum voltage reaches the minimum permission discharge voltage of battery cell.
In another alternative embodiment, first it can allow charging voltage that one charge cutoff electricity is set according to battery cell highest
Limit value is pressed, a discharge cut-off voltage limit value is arranged according to the minimum permission discharge voltage of battery cell.Moreover, charge cutoff condition
For：Battery cell ceiling voltage reaches charge cutoff voltage limit value；Electric discharge cut-off condition be：Battery cell minimum voltage, which reaches, to be put
Electric blanking voltage limit value.
Fig. 2 is the flow chart of step S13 embodiments one in Fig. 1, and in this embodiment, step S13 specifically includes following step
Suddenly：
Step S131. obtains the current SOC of battery, and judges whether current SOC is more than 50%, if so, thening follow the steps
S132；If it is not, thening follow the steps S133；
Step S132. first controls battery and enters the charging stage, until meet charge cutoff condition, then controls battery into meditation
Set the stage, finally control battery enter discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime mark
Then constant volume executes step S14；
Step S133. first controls battery and enters discharge regime, until meeting electric discharge cut-off condition, then controls battery into meditation
Set the stage, finally control battery and enter the charging stage, until meet charge cutoff condition, and obtain battery the charging stage mark
Then constant volume executes step S14.
By implementing the technical solution of the embodiment, the current SOC of battery is obtained first, and hold when current SOC is larger
The first calibration strategy (charging-standing-electric discharge) of row executes second of calibration strategy (electric discharge-quiet when current SOC is smaller
Set-charge), the detection time of battery SOH can be shortened as much as possible in this way, reduce user's unnecessary stand-by period.
In one alternate embodiment, charging/discharging apparatus includes accessory power supply, when direct current rifle is inserted into filling for electric vehicle
It discharges after interface, which powers on, and it is BMS module for power supply to control the accessory power supply.
In one alternate embodiment, when executing calibration strategy, either charging stage, discharge regime, or standing
In the stage, for charging/discharging apparatus with BMS modules in real time into row data communication, charging/discharging apparatus records the electricity of BMS modules transmission in real time
Cell voltage information, battery temperature information are prevented in detection process with carrying out real-time protection to the battery of tested vehicle to battery
It carried out the danger such as putting, overcharge, and avoided result in the further deterioration of battery performance, and safety accident occurs.It should be noted that
In the stage of standing, although the main loop of power circuit of charging/discharging apparatus stops, to cell output current voltage, still can be used auxiliary
It helps power supply to be continuously BMS modules and energy is provided, to realize the real-time Communication for Power between charging/discharging apparatus and BMS modules.In addition,
In step S15, other than exporting calculated battery SOH, battery voltage information, the battery temperature letter in each stage are also exported
Breath, is analyzed and evaluated battery cell consistency, battery system temperature management level thereby using family or technical staff, more preferably
Ground illustrates the result of SOH calibration gained.
Fig. 3 is the flow chart of the detection method embodiment two of battery SOH of the present invention, the detection of the battery SOH of the embodiment
Method is applied in electric vehicle, after electric vehicle accesses the direct current rifle of charging/discharging apparatus, that is, by electric vehicle and charge and discharge
After equipment carries out physical connection, the BMS modules of electric vehicle follow the steps below：
Step S21. shakes hands with charging/discharging apparatus；
In this step, handshake operation is in addition to including other than charging/discharging apparatus intercourses identity with BMS modules, also wrapping
It includes：After user has selected SOH demarcation flows, charging/discharging apparatus determines the version of communication protocol corresponding to SOH demarcation flows
Number, and the version number is sent to the BMS modules of electric vehicle, in this way, charging/discharging apparatus can SOH with BMS modules both sides
The communication protocol of calibration communicate.
Step S22. sends battery rated capacity to charging/discharging apparatus；Further, also sending battery cell highest allows
Charging voltage and the minimum permission discharge voltage of battery cell；
In this step, after carrying out handshake operation, charging/discharging apparatus and BMS modules can mutually carry out the ginseng of SOH calibration
Number configuration operation specifically includes charge parameter configuration and the discharge parameter configuration of battery, wherein charge parameter configuration can be according to state
Mark GB/T 27930 requires content to be configured, it may for example comprise：Charging/discharging apparatus receives battery rated capacity, electricity from BMS modules
Pond monomer highest allows charging voltage, battery highest to allow charging current, highest that charging total voltage, highest is allowed to allow charging electricity
Temperature, and send remaining charge power etc. to BMS modules.Discharge parameter configures：Charging/discharging apparatus receives electricity from BMS modules
The minimum permission discharge voltage of pond rated capacity, battery cell, battery highest allow discharge current, it is minimum allow discharge total voltage,
Highest allows discharge temp, and sends socking out power etc. to BMS modules.In addition, allowing to charge about battery cell highest
Voltage, different types of battery correspond to different values, for example, LiFePO4 is 3.7 ± 0.1V, ternary lithium is 4.2 ± 0.1V, titanium
Sour lithium is 2.8 ± 0.1V, and LiMn2O4 is 4.2 ± 0.1V；About the minimum permission discharge voltage of battery cell, different types of battery
Also different values is corresponded to, for example, LiFePO4 is 2.5 ± 0.1V, ternary lithium is 2.7 ± 0.1V, and lithium titanate is 1.6 ± 0.1V,
LiMn2O4 is 2.7 ± 0.1V.
The calibration strategy that step S23. is determined according to charging/discharging apparatus, control battery execute calibration strategy, wherein control electricity
Pond executes calibration strategy：First control battery enters the charging stage, until meet charge cutoff condition, then controls battery into meditation
Set the stage, finally control battery enter discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime mark
Constant volume；Alternatively, first control battery enters discharge regime, until meeting electric discharge cut-off condition, then controls battery and enter standing rank
Section finally controls battery and enters the charging stage, until meeting charge cutoff condition, and obtains calibration of the battery in the charging stage and holds
Amount；
In this step, calibration strategy includes following two：Charging-standing-electric discharge, or, electric discharge-standing-charging.
Each calibration strategy includes three phases, wherein in the stage of standing, the main loop of power circuit of charging/discharging apparatus is exported to battery
Current Voltage be 0.Preferably, the time in standing stage can be also set, and specifically, control battery enters the quiet of preset duration
It sets the stage, ranging from 5-60 minutes of preset duration, for example, standing 20 minutes；In charging stage or discharge regime, charge and discharge are set
Standby electric current that can be certain carries out charge or discharge to power battery, which is, for example, 0.1-2C0, wherein 0.1-2 is
Charge/discharge multiplying power, C0For the rated capacity of battery.In addition, when controlling the battery one of calibration strategy of execution, electricity is also obtained
Marked capacity of the pond in the phase III, if the phase III is discharge regime, acquired marked capacity is battery in electric discharge rank
The discharge capacity of section；If the phase III is the charging stage, acquired marked capacity is that charging of the battery in the charging stage is held
Amount.
Acquired marked capacity is sent to charging/discharging apparatus by step S24., so that charging/discharging apparatus is specified according to battery
Capacity and marked capacity calculate battery SOH, and export battery SOH.
In this step, charging/discharging apparatus can calculate battery SOH according to following formula：
Wherein, C is marked capacity, C0For battery rated capacity.
Further, after charging/discharging apparatus calculates battery SOH value, also the SOH value calculated can be sent to BMS moulds
Block, so that the calculated value of SOH value and SOH that BMS modules are estimated itself compares, to be carried out to the estimated value of SOH
It corrects, and its SOH evaluation method is calibrated.
The present invention also constructs a kind of charging/discharging apparatus, which includes first memory and first processor,
In, it is realized when first processor is for executing the computer program stored in first memory if above application is in charging/discharging apparatus
In battery SOH detection method the step of.
The present invention also constructs a kind of electric vehicle, including battery and BMS modules, moreover, BMS modules include second memory
And second processor, wherein realized as above-mentioned when second processor is for executing the computer program stored in second memory
It applies the detection method of the BMS moulds battery SOH in the block of electric vehicle the step of.
The present invention also constructs a kind of detecting system of battery SOH, including above-mentioned charging/discharging apparatus and above-mentioned electric vehicle.
Above disclosed is only presently preferred embodiments of the present invention, cannot limit the right of the present invention with this certainly
Range, those skilled in the art can understand all or part of the processes for realizing the above embodiment, and according to right of the present invention
Equivalent variations made by it is required that, still belong to the scope covered by the invention.
Claims (10)
1. a kind of detection method of battery SOH, which is characterized in that after electric vehicle accesses the direct current rifle of charging/discharging apparatus, fill
Discharge equipment follows the steps below：
Step S11. receives the sign on of SOH calibration input by user, and according to the sign on, with electric vehicle
BMS modules are shaken hands；
Step S12. receives the battery rated capacity that the BMS modules are sent；
Step S13. determines calibration strategy, and controls battery and execute the calibration strategy, wherein control battery executes the calibration
Strategy is：First control battery enters the charging stage, until meeting charge cutoff condition, then controls battery and enters the standing stage, most
Afterwards control battery enter discharge regime, until meet electric discharge cut-off condition, and obtain battery discharge regime marked capacity；Or
Person first controls battery and enters discharge regime, until meeting electric discharge cut-off condition, then controls battery and enter the standing stage, finally control
Battery processed enters the charging stage, until meet charge cutoff condition, and obtain battery the charging stage marked capacity；
Step S14. calculates battery SOH according to the battery rated capacity and the marked capacity；
Step S15. exports calculated battery SOH.
2. the detection method of battery SOH according to claim 1, which is characterized in that the step S13 includes：
Step S131. obtains the current SOC of battery, and judges whether the current SOC is more than 50%, if so, thening follow the steps
S132；If it is not, thening follow the steps S133；
Step S132. first controls battery and enters the charging stage, until meeting charge cutoff condition, then controls battery and enters standing rank
Section finally controls battery and enters discharge regime, until meeting electric discharge cut-off condition, and obtains battery and holds in the calibration of discharge regime
Then amount executes step S14；
Step S133. first controls battery and enters discharge regime, until meeting electric discharge cut-off condition, then controls battery and enters standing rank
Section finally controls battery and enters the charging stage, until meeting charge cutoff condition, and obtains calibration of the battery in the charging stage and holds
Then amount executes step S14.
3. the detection method of battery SOH according to claim 1, which is characterized in that before the step S11, also wrap
It includes：
Step S10. control accessory power supplys are the BMS module for power supply.
4. the detection method of battery SOH according to claim 1, which is characterized in that the step S13 further includes：
In the charging stage, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
In the stage of standing, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
In discharge regime, battery voltage information, the battery temperature information that BMS modules are sent are recorded in real time；
Moreover, the step S15 further includes：
Export battery voltage information, the battery temperature information in each stage.
5. the detection method of battery SOH according to claim 1, which is characterized in that in the step S13, control electricity
Pond enters the step of standing stage and includes：
Control battery enters standing stage of preset duration, ranging from 5-60 minutes of the preset duration.
6. the detection method of battery SOH according to claim 1, which is characterized in that in the step S14, according to
Lower formula calculates battery SOH：
Wherein, C is the marked capacity, C0For the battery rated capacity.
7. a kind of detection method of battery SOH, which is characterized in that after electric vehicle accesses the direct current rifle of charging/discharging apparatus, electricity
The BMS modules of electrical automobile follow the steps below：
Step S21. shakes hands with charging/discharging apparatus；
Step S22. sends battery rated capacity to charging/discharging apparatus；
The calibration strategy that step S23. is determined according to charging/discharging apparatus, control battery execute the calibration strategy, wherein control electricity
Pond executes the calibration strategy：First control battery enters the charging stage, until meet charge cutoff condition, then control battery into
Enter the standing stage, finally control battery and enter discharge regime, until meeting electric discharge cut-off condition, and obtains battery in discharge regime
Marked capacity；Alternatively, first control battery enters discharge regime, until meeting electric discharge cut-off condition, then battery is controlled into meditation
Set the stage, finally control battery and enter the charging stage, until meet charge cutoff condition, and obtain battery the charging stage mark
Constant volume；
Acquired marked capacity is sent to charging/discharging apparatus by step S24., so that the charging/discharging apparatus is according to the battery
Rated capacity and the marked capacity calculate battery SOH, and export the battery SOH.
8. a kind of charging/discharging apparatus, including first memory and first processor, which is characterized in that the first processor is used for
The battery SOH as described in any one of claim 1-6 is realized when executing the computer program stored in the first memory
Detection method the step of.
9. a kind of electric vehicle, including battery and BMS modules, the BMS modules include second memory and second processor,
It is characterized in that, the second processor when executing the computer program stored in the second memory for realizing as right is wanted
The step of seeking the detection method of the 7 battery SOH.
10. a kind of detecting system of battery SOH, which is characterized in that wanted including charging/discharging apparatus according to any one of claims 8 and right
Seek the electric vehicle described in 9.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546704A (en) * | 2018-11-29 | 2019-03-29 | 安徽江淮汽车集团股份有限公司 | A kind of power battery fast charge method |
| CN110133535A (en) * | 2019-06-21 | 2019-08-16 | 阳光电源股份有限公司 | The SOH value of battery system determines method and device |
| CN110361664A (en) * | 2019-08-23 | 2019-10-22 | 清华四川能源互联网研究院 | Battery detection method, battery monitoring device and charging equipment |
| CN110780209A (en) * | 2019-11-27 | 2020-02-11 | 深圳市科陆电子科技股份有限公司 | BMS battery capacity calibration method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068008A (en) * | 2015-07-14 | 2015-11-18 | 南京航空航天大学 | Battery SOC (state of charge) estimation method by utilizing vehicle-mounted charging machine identification battery parameter |
| CN105607004A (en) * | 2014-11-20 | 2016-05-25 | 北京普莱德新能源电池科技有限公司 | Lithium ion battery pack state-of-health evaluation method and lithium ion battery pack state-of-health evaluation system |
| CN105785275A (en) * | 2016-03-08 | 2016-07-20 | 西安特锐德智能充电科技有限公司 | Battery SOH testing device based on charger and method for testing battery SOH |
| CN106505662A (en) * | 2016-11-03 | 2017-03-15 | 上海理工大学 | Demarcate charging device and the method for work of batteries of electric automobile pool-size |
| CN106646261A (en) * | 2017-01-03 | 2017-05-10 | 重庆长安汽车股份有限公司 | Accuracy verification method and accuracy verification system for SOC of battery management system |
-
2018
- 2018-05-17 CN CN201810474575.5A patent/CN108550928B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105607004A (en) * | 2014-11-20 | 2016-05-25 | 北京普莱德新能源电池科技有限公司 | Lithium ion battery pack state-of-health evaluation method and lithium ion battery pack state-of-health evaluation system |
| CN105068008A (en) * | 2015-07-14 | 2015-11-18 | 南京航空航天大学 | Battery SOC (state of charge) estimation method by utilizing vehicle-mounted charging machine identification battery parameter |
| CN105785275A (en) * | 2016-03-08 | 2016-07-20 | 西安特锐德智能充电科技有限公司 | Battery SOH testing device based on charger and method for testing battery SOH |
| CN106505662A (en) * | 2016-11-03 | 2017-03-15 | 上海理工大学 | Demarcate charging device and the method for work of batteries of electric automobile pool-size |
| CN106646261A (en) * | 2017-01-03 | 2017-05-10 | 重庆长安汽车股份有限公司 | Accuracy verification method and accuracy verification system for SOC of battery management system |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546704A (en) * | 2018-11-29 | 2019-03-29 | 安徽江淮汽车集团股份有限公司 | A kind of power battery fast charge method |
| CN111781502A (en) * | 2019-04-04 | 2020-10-16 | 宁德时代新能源科技股份有限公司 | Battery detection method and device for electric automobile and detection equipment |
| CN110133535A (en) * | 2019-06-21 | 2019-08-16 | 阳光电源股份有限公司 | The SOH value of battery system determines method and device |
| CN110133535B (en) * | 2019-06-21 | 2022-04-08 | 阳光电源股份有限公司 | SOH value determination method and device of battery system |
| CN110361664A (en) * | 2019-08-23 | 2019-10-22 | 清华四川能源互联网研究院 | Battery detection method, battery monitoring device and charging equipment |
| CN110780209B (en) * | 2019-11-27 | 2021-12-17 | 深圳市科陆电子科技股份有限公司 | BMS battery capacity calibration method |
| CN110780209A (en) * | 2019-11-27 | 2020-02-11 | 深圳市科陆电子科技股份有限公司 | BMS battery capacity calibration method |
| CN110865309A (en) * | 2019-11-28 | 2020-03-06 | 桑顿新能源科技有限公司 | Power battery capacity detection method and system |
| CN111900774A (en) * | 2020-07-24 | 2020-11-06 | 博众精工科技股份有限公司 | Energy scheduling method |
| CN111900774B (en) * | 2020-07-24 | 2022-01-25 | 博众精工科技股份有限公司 | Energy scheduling method |
| CN112213643A (en) * | 2020-09-30 | 2021-01-12 | 蜂巢能源科技有限公司 | Method, system and equipment for predicting initial capacity and health state of battery |
| CN112213643B (en) * | 2020-09-30 | 2023-06-23 | 蜂巢能源科技有限公司 | Method, system and equipment for predicting initial capacity and state of health of battery |
| CN113702848A (en) * | 2021-08-20 | 2021-11-26 | 深圳市新威尔电子有限公司 | Battery detection method based on signal dynamic output |
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| WO2024000145A1 (en) * | 2022-06-28 | 2024-01-04 | 宁德时代新能源科技股份有限公司 | Battery soh detection method and apparatus, device, and storage medium |
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