CN113386627A - Method for correcting capacity of automobile storage battery, electronic device and storage medium - Google Patents
Method for correcting capacity of automobile storage battery, electronic device and storage medium Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
- B60L58/13—Maintaining the SoC within a determined range
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- 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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- 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
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a method for correcting the capacity of an automobile storage battery, electronic equipment and a storage medium, wherein the method comprises the following steps: when the automobile is ignited, the storage battery is charged until the preset charging completion condition is met, and the first electric quantity of the storage battery at the moment is recorded; controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode until the vehicle is flamed out; after the preset static time, acquiring the open-circuit voltage of the storage battery, and determining the state of charge corresponding to the open-circuit voltage of the storage battery; calculating a capacity value of the storage battery according to the first electric quantity, the second electric quantity and the state of charge to serve as an actually measured capacity value of the storage battery; a corrected battery capacity value is obtained based on the measured battery capacity value. The method for correcting the electric quantity of the storage battery corrects the set value of the system according to the actual battery capacity value, ensures normal power supply of the whole vehicle, reduces the occurrence of power feeding, optimizes the condition of accelerating aging of the battery, and prolongs the service life of the storage battery.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile storage battery capacity correction method, electronic equipment and a storage medium.
Background
Various electronic devices of the vehicle are powered by the whole vehicle power generation device, for example, a fuel automobile is powered by a generator to convert chemical energy of fuel into electric energy, and an electric automobile is powered directly by a power battery.
When the vehicle runs, the whole vehicle power generation equipment charges the storage battery, and when the power provided by the power generation equipment is insufficient, the storage battery provides extra power.
At present, management equipment of a 12V storage Battery of a vehicle, such as an Intelligent current Sensor (IBS) or an Intelligent power distribution module (USM), does not have a function of automatically calibrating and updating the capacity of the storage Battery, and cannot detect the attenuation condition of the storage Battery.
The following problems will occur when the storage battery is not updated with capacity calibration:
1. if the customer replaces the battery with a capacity lower than that of the original vehicle, the control strategy of the whole vehicle cannot be updated in real time, so that the electric quantity of the storage battery is always kept in an excessively low state, the damage speed of the battery is accelerated, and the customer complains about the vehicle problem.
2. As the battery ages, the available capacity of the battery decreases, the quality of the battery aging is accelerated according to the original high-capacity control strategy, the battery is in a low-power state for a long time, and vehicle feeding and vehicle starting cannot be easily caused.
Disclosure of Invention
Therefore, it is necessary to provide a method for correcting the capacity of an automobile storage battery, an electronic device, and a storage medium, aiming at the technical problem that the storage battery cannot be automatically calibrated and updated in the prior art.
The invention provides a method for correcting the capacity of an automobile storage battery, which comprises the following steps:
when the automobile is ignited, the storage battery is charged until the preset charging completion condition is met, and the first electric quantity of the storage battery at the moment is recorded;
controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode until the vehicle is flamed out, wherein in the current negative feedback power generation mode, the whole vehicle power generation equipment takes the current of a storage battery as 0 as a target to adjust the power generation voltage of the whole vehicle power generation equipment, and in the constant voltage control mode, the whole vehicle power generation equipment generates power at a first constant voltage;
when the automobile is flamed out, recording the second electric quantity of the storage battery at the moment;
after the preset static time, acquiring the open-circuit voltage of the storage battery, and determining the state of charge corresponding to the open-circuit voltage of the storage battery;
calculating a capacity value of the storage battery according to the first electric quantity, the second electric quantity and the state of charge to serve as an actually measured capacity value of the storage battery;
and obtaining a corrected battery capacity value based on the actually measured battery capacity value.
Further, controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode specifically comprises:
controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode:
under the current negative feedback power generation mode, if the voltage of the storage battery is detected to be smaller than a preset current negative feedback power generation switching voltage value and the duration time is detected to be larger than a current negative feedback power generation switching time threshold value, the whole vehicle power generation equipment is switched to a constant voltage control mode;
and under the constant voltage control mode, if the absolute value of the charging current of the storage battery is detected to be smaller than a preset constant voltage switching current value and the duration time is detected to be larger than a constant voltage switching time threshold value, switching the whole vehicle power generation equipment into a current negative feedback power generation mode.
Further, the first constant voltage is larger than the current negative feedback power generation switching voltage value.
Further, the first constant voltage is a voltage required by preset storage battery capacity calibration plus a wiring harness voltage drop, the wiring harness voltage drop is a wiring harness voltage drop from the whole vehicle power generation equipment to the storage battery end, and when the storage battery voltage reaches the voltage required by the storage battery capacity calibration, the state of charge of the storage battery is within a preset state of charge percentage range.
Further, before the controlling the vehicle power generation device to switch between the current negative feedback power generation mode and the constant voltage control mode, the method further comprises:
after the storage battery is charged to meet the preset charging completion condition, the whole vehicle power generation equipment generates power at a first constant voltage until the absolute value of the discharging current of the storage battery is detected to be smaller than or equal to the absolute value of the preset starting switching current or the current of the storage battery is detected to be the charging current, and the duration time is longer than the starting switching time threshold, the whole vehicle power generation equipment is controlled to switch between a current negative feedback power generation mode and a constant voltage control mode.
Further, when the car was igniteed, charge to the battery and satisfy and predetermine the condition of finishing of charging, the first electric quantity of battery at this moment of record specifically includes:
when the automobile is ignited, the storage battery enters a constant-voltage charging mode;
under the constant voltage charging mode, the whole vehicle power generation equipment generates power at a second constant voltage, and if the absolute value of the charging current of the storage battery is detected to be smaller than or equal to a preset charging current value or the current of the storage battery is detected to be a discharging current, and the duration time is longer than the preset first charging time, the storage battery enters a voltage reduction charging mode;
under the step-down charging mode, every interval step-down charging time threshold reduces whole car power generation equipment's voltage, and the electric current of battery satisfies the completion condition of predetermineeing to charge, then records the first electric quantity of battery this moment, the completion condition of charging is: the current of the storage battery is 0 or is a discharge current, and the duration time is longer than the preset second charging time.
Furthermore, the step-down charging mode includes a first charging stage and a second charging stage, in the step-down charging mode, the voltage of the entire vehicle power generation device is reduced at intervals of a step-down charging time threshold value until the current of the storage battery meets a preset charging completion condition, and then the first electric quantity of the storage battery at the moment is recorded, which specifically includes:
in a step-down charging mode, firstly entering a first charging stage;
in the first charging stage, the voltage of the power generation equipment of the whole vehicle is reduced by a first gradient value every time the charging time threshold is reduced;
if the voltage of the whole vehicle power generation equipment is reduced to a preset stage change voltage threshold value, entering a second charging stage;
and in the second charging stage, reducing the voltage of the whole vehicle power generation equipment by a second gradient value every time when the voltage is reduced and the charging time is a threshold value, recording the first electric quantity of the storage battery at the moment until the current of the storage battery meets a preset charging completion condition, wherein the second gradient value is smaller than the first gradient value.
Further, obtaining a corrected battery capacity value based on the measured battery capacity value specifically includes:
calculating a corrected battery capacity value A based on the measured battery capacity valueCorrectionComprises the following steps:
AcorrectionA (a-a _ d) + a _ d, wherein:
a is reliability, a is the measured battery capacity value, and a _ d is the battery capacity value before correction.
Further, the reliability is associated with the use time of the storage battery, and the reliability corresponding to a longer use time is equal to or greater than the reliability corresponding to a shorter use time.
Still further, still include:
calculating the ratio of the capacity value of the storage battery after correction to the capacity value of the storage battery before correction;
and if the ratio is smaller than a preset warning ratio, warning operation is executed.
Still further, when the car was igniteed, charge to the battery and satisfy and predetermine the condition of finishing of charging, the first electric quantity of battery at this moment of record specifically includes: when the automobile is ignited, if the storage battery is judged to be required to be corrected, the storage battery is charged until the preset charging completion condition is met, and the first electric quantity of the storage battery at the moment is recorded;
before the step of charging the storage battery to meet the preset charging completion condition and recording the first electric quantity of the storage battery at the moment when the automobile is ignited, the method further comprises the following steps:
acquiring a first charge state of the whole vehicle when the vehicle is flamed out for the previous time and a second charge state of the whole vehicle when the vehicle is ignited, and if the absolute value of the difference value between the first charge state and the second charge state is larger than a preset difference value threshold, judging that the capacity difference value exceeds the limit;
and if the number of times that the capacity difference value exceeds the limit is larger than a preset number threshold, judging that the storage battery needs to be corrected.
The present invention provides an electronic device, including:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to at least one of the processors; wherein,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the automotive battery capacity correction method as described above.
The present invention provides a storage medium storing computer instructions for performing all the steps of the automobile battery capacity correction method as described above when a computer executes the computer instructions.
The method for correcting the electric quantity of the storage battery corrects the set value of the system according to the actual battery capacity value, ensures normal power supply of the whole vehicle, reduces the occurrence of feed, adopts the corrected and attenuated battery capacity of the whole vehicle system, executes the electric quantity control strategy of the storage battery according to the system strategy, optimizes the aging acceleration condition of the battery, and prolongs the service life of the storage battery. Meanwhile, the method for correcting the capacity of the automobile storage battery detects and corrects the capacity of the automobile storage battery in the using process of the automobile, so that the influence on the use of the automobile by a user is avoided.
Drawings
FIG. 1 is a flow chart illustrating a method for correcting the capacity of an automobile battery according to the present invention;
FIG. 2 is a flowchart illustrating a method for correcting the capacity of a vehicle battery according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating a method for detecting the capacity of a vehicle battery according to a preferred embodiment of the present invention;
FIG. 4 is a flowchart illustrating the operation of the vehicle battery capacity correction logic in accordance with a preferred embodiment of the present invention;
FIG. 5 is a flowchart illustrating the operation of the current negative feedback power generation mode and the constant voltage control mode for correcting the capacity of the vehicle battery according to the preferred embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of an electronic device according to the present invention.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example one
Fig. 1 shows a working flow chart of a method for correcting the capacity of an automobile storage battery according to the present invention, which includes:
step S101, when an automobile is ignited, charging a storage battery until a preset charging completion condition is met, and recording first electric quantity of the storage battery at the moment;
step S102, controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode until the vehicle is flamed out, wherein in the current negative feedback power generation mode, the whole vehicle power generation equipment takes the current of a storage battery as 0 as a target to adjust the power generation voltage of the whole vehicle power generation equipment, and in the constant voltage control mode, the whole vehicle power generation equipment generates power at a first constant voltage;
step S103, when the automobile is flamed out, recording the second electric quantity of the storage battery at the moment;
step S104, after the preset static time, acquiring the open-circuit voltage of the storage battery, and determining the state of charge corresponding to the open-circuit voltage of the storage battery;
step S105, calculating a capacity value of the storage battery according to the first electric quantity, the second electric quantity and the state of charge to serve as an actually measured capacity value of the storage battery;
and step S106, obtaining a corrected storage battery capacity value based on the actually measured storage battery capacity value.
In particular, the present invention can be applied to an Electronic Control Unit (ECU) of a vehicle, such as a battery monitoring Unit.
When the automobile is ignited, step S101 is executed to obtain the first electric quantity Q1, and then step S102 is executed to switch between the current negative feedback power generation mode and the constant voltage control mode. The current negative feedback power generation mode can adjust the output voltage of the power generation equipment through current negative feedback, the state that the current of the storage battery is 0 is maintained, the battery is in minimum current charging and discharging in advance, or the state that the storage battery is close to standing is achieved, chemical substances in the storage battery are gradually in a stable state, and the standing time of the storage battery is shortened. Specifically, the current negative feedback adjusts the generated voltage to generate power, and when the battery current is detected to be the charging current, the voltage of the vehicle power generation equipment is reduced, and when the battery current is detected to be the discharging current, the voltage of the vehicle power generation equipment is increased.
When the storage battery discharges too much, the constant voltage charging mode is switched to supplement power for the storage battery, and the whole vehicle power generation equipment generates power at the first constant voltage, so that the voltage of the storage battery is close to the first constant voltage, and the electric quantity of the storage battery reaches a preset electric quantity range.
And keeping switching between the current negative feedback power generation mode and the constant voltage control mode until the automobile is flamed out, triggering step S103, and recording the second electric quantity. Because under the current negative feedback power generation mode, the current of the storage battery is taken as 0 as a target, and under the constant voltage control mode, the power generation equipment of the whole vehicle generates power at the first constant voltage, when the second electric quantity is calculated, the current of the storage battery is approximately equal to 0, and the electric quantity is kept within the preset electric quantity percentage. Then, after the rest time has elapsed, step S104 is performed to determine the corresponding state of charge based on the open circuit voltage of the battery. And step S105 is executed, and a storage battery capacity value is calculated according to the first electric quantity, the second electric quantity and the state of charge and serves as an actually measured storage battery capacity value. Specifically, the battery capacity value is ampere-hour integral electric quantity. And (3) actually measuring a battery capacity value (Q1-Q2)/(1-SOC3), wherein Q1 is a first electric quantity, Q2 is a second electric quantity, after the automobile is shut down and a preset static time elapses, the open-circuit voltage of the battery is recorded as OCV1, and a relation table (OCV-SOC-T table) of the open-circuit voltage and the state of charge is checked to obtain the state of charge SOC3 corresponding to OCV 1. Finally, in step S106, a corrected battery capacity value is calculated from the measured battery capacity value.
The method for correcting the electric quantity of the storage battery corrects the set value of the system according to the actual battery capacity value, ensures normal power supply of the whole vehicle, reduces the occurrence of feed, adopts the corrected and attenuated battery capacity of the whole vehicle system, executes the electric quantity control strategy of the storage battery according to the system strategy, optimizes the aging acceleration condition of the battery, and prolongs the service life of the storage battery. Meanwhile, the method for correcting the capacity of the automobile storage battery detects and corrects the capacity of the automobile storage battery in the using process of the automobile, so that the influence on the use of the automobile by a user is avoided.
Example two
Fig. 2 is a flowchart illustrating a method for correcting the capacity of an automobile battery according to an embodiment of the present invention, including:
step S201, a first charge state of the whole vehicle when the vehicle is flamed out last time and a second charge state of the whole vehicle when the vehicle is ignited are obtained, and if the absolute value of the difference value between the first charge state and the second charge state is larger than a preset difference value threshold value, the capacity difference value is judged to be out of limit.
And step S202, if the number of times that the capacity difference value exceeds the limit is larger than a preset number threshold, judging that the storage battery needs to be corrected.
And step S203, when the automobile is ignited, if the storage battery is judged to need to be corrected, the storage battery enters a constant voltage charging mode.
And step S204, under the constant voltage charging mode, the whole vehicle power generation equipment generates power at a second constant voltage, and if the absolute value of the charging current of the storage battery is detected to be smaller than or equal to a preset charging current value or the current of the storage battery is detected to be a discharging current, and the duration time is longer than a preset first charging time, the storage battery enters a voltage reduction charging mode.
Step S205, in the step-down charging mode, reducing the voltage of the whole vehicle power generation equipment at intervals of a step-down charging time threshold value until the current of the storage battery meets a preset charging completion condition, recording the first electric quantity of the storage battery at the moment, wherein the charging completion condition is as follows: the current of the storage battery is 0 or is a discharge current, and the duration time is longer than the preset second charging time.
In one embodiment, the step-down charging mode includes a first charging stage and a second charging stage, and in the step-down charging mode, the voltage of the entire vehicle power generation device is reduced at intervals of a step-down charging time threshold value until the current of the storage battery meets a preset charging completion condition, and then the first electric quantity of the storage battery at this time is recorded, which specifically includes:
in a step-down charging mode, firstly entering a first charging stage;
in the first charging stage, the voltage of the power generation equipment of the whole vehicle is reduced by a first gradient value every time the charging time threshold is reduced;
if the voltage of the whole vehicle power generation equipment is reduced to a preset stage change voltage threshold value, entering a second charging stage;
and in the second charging stage, reducing the voltage of the whole vehicle power generation equipment by a second gradient value every time when the voltage is reduced and the charging time is a threshold value, recording the first electric quantity of the storage battery at the moment until the current of the storage battery meets a preset charging completion condition, wherein the second gradient value is smaller than the first gradient value.
Step S206, after the storage battery is charged to meet the preset charging completion condition, the whole vehicle power generation equipment generates power at a first constant voltage until the absolute value of the discharging current of the storage battery is detected to be smaller than or equal to the preset starting switching current absolute value or the current of the storage battery is detected to be the charging current, and the duration time is longer than the starting switching time threshold, the whole vehicle power generation equipment is controlled to switch between a current negative feedback power generation mode and a constant voltage control mode.
Step S207, controlling the whole vehicle generating equipment to switch between a current negative feedback generating mode and a constant voltage control mode:
under a current negative feedback power generation mode, if the voltage of the storage battery is detected to be smaller than a preset current negative feedback power generation switching voltage value and the duration time is detected to be greater than a current negative feedback power generation switching time threshold value, the whole vehicle power generation equipment is switched to a constant voltage control mode, and under the current negative feedback power generation mode, the whole vehicle power generation equipment takes the current of the storage battery as 0 as a target to adjust the power generation voltage of the whole vehicle power generation equipment;
under a constant voltage control mode, if the absolute value of the charging current of the storage battery is detected to be smaller than a preset constant voltage switching current value and the duration time is detected to be larger than a constant voltage switching time threshold, the whole vehicle power generation equipment is switched to a current negative feedback power generation mode, the first constant voltage is larger than a current negative feedback power generation switching voltage value, under the constant voltage control mode, the whole vehicle power generation equipment generates power with the first constant voltage, the first constant voltage is a voltage required by the preset storage battery capacity calibration plus a wiring harness voltage drop, the wiring harness voltage drop is a wiring harness voltage drop from the whole vehicle power generation equipment to the storage battery end, and when the storage battery voltage reaches the voltage required by the storage battery capacity calibration, the state of charge of the storage battery is within a preset state of charge percentage range;
step S208, when the automobile is flamed out, recording the second electric quantity of the storage battery at the moment;
step S209, after the preset static time, acquiring the open-circuit voltage of the storage battery, and determining the state of charge corresponding to the open-circuit voltage of the storage battery;
step S210, calculating a capacity value of a storage battery according to the first electric quantity, the second electric quantity and the state of charge to serve as an actually measured capacity value of the storage battery;
step S211 of calculating a corrected battery capacity value A based on the measured battery capacity valueCorrectionComprises the following steps:
AcorrectionA (a-a _ d) + a _ d, wherein:
and a is reliability, A is the actually measured storage battery capacity value, A _ d is the storage battery capacity value before correction, the reliability is related to the service time of the storage battery, and the reliability corresponding to a longer service time is greater than or equal to the reliability corresponding to a shorter service time.
Step S212, calculating the ratio of the capacity value of the storage battery after correction to the capacity value of the storage battery before correction;
in step S213, if the ratio is smaller than the preset warning ratio, a warning operation is performed.
Specifically, in the present embodiment, the battery capacity calibration is performed on the whole vehicle, the current battery capacity is estimated, and the effects of identifying and updating the battery capacity and calculating the battery capacity fading are achieved:
and S201 to S202, identifying whether the capacity correction logic needs to be entered or not according to the SOC calculated by the whole vehicle and the SOC error after standing correction.
The first State of Charge SOC1 is the State of Charge (SOC) at the previous vehicle key off, and the second State of Charge SOC2 is the State of Charge at the time of the next vehicle ignition. If abs (SOC2-SOC1) is greater than the difference threshold, then the capacity difference is determined to be out of limit and the flag count may be incremented by 1. And when the number of times that the capacity difference value exceeds the limit is greater than a preset number threshold, judging that the storage battery needs to be corrected. For example, when count>3, the battery correction flag is set to one, for example, set to bCorrection＝1。
And S203 to S208, fully charging the storage battery through the vehicle control logic, and then adjusting the voltage value of the storage battery by constant voltage.
In step S203, when the vehicle is ignited, if it is determined that the battery correction is necessary, the battery enters a constant voltage charging mode. For example, when the car is fired, if b is detectedCorrectionIf it is 1, it is determined that the battery correction is necessary, and the battery enters the constant voltage charging mode.
In the constant voltage charging mode, the entire vehicle power generation device generates power at a second constant voltage, preferably, 14V to 15V. And if the absolute value of the charging current of the storage battery is detected to be smaller than or equal to the preset charging current value or the current of the storage battery is detected to be the discharging current, and the duration time is longer than the preset first charging time, the storage battery enters a step-down charging mode. Generally, a battery current greater than 0 is charging and less than 0 is discharging, and thus the battery current ≦ charging current value, including: the charging current of the storage battery is less than or equal to 1A, or the current of the storage battery is the discharging current. For example, when the current of the storage battery is detected to be less than or equal to 1A and the duration t is more than 10min, the storage battery enters a voltage reduction charging mode.
The voltage reduction charging mode comprises a first charging stage and a second charging stage, and in the first charging stage, the voltage of the power generation equipment of the whole vehicle is reduced by a first gradient value every time a voltage reduction charging time threshold value is set. The first gradient value in the first stage is large, for example, in the first stage, 0.2V is used as the first gradient value, and the vehicle generated voltage U1 is equal to U1-0.2V every 30 seconds. And entering a second charging stage when the generated voltage of the whole vehicle is reduced to a stage change voltage threshold value. Wherein the step change voltage threshold is less than the second constant voltage. And selecting the initial standing voltage value close to the full-charged storage battery by the stage change voltage threshold value, so that the amplitude of the full-charged voltage virtual height of the storage battery is reduced. For example, the step-change voltage threshold is set to the initial rest voltage value ± a predetermined error value, for example, 13.4V.
And in the second charging stage, the voltage of the power generation equipment of the whole vehicle is reduced by a second gradient value every time the charging time threshold is reduced. The second gradient value of the second stage is smaller than the first gradient value, so that the voltage is slowly reduced, and the current of the storage battery gradually approaches 0A. For example, in the second stage, 0.1V is used as the second gradient value, and the vehicle generated voltage U1 is equal to U1-0.1V every 30 seconds. And finishing charging until the current of the storage battery is 0 or is a discharging current and the duration time is longer than the preset charging time. Since the battery current is greater than 0 for charging and less than 0 for discharging, it can be set that when the battery current is less than or equal to 0A, the duration is greater than the preset second charging time, for example, 30 seconds, the battery is charged, and the first electric quantity Q1 of the battery at this time is recorded. The first electric quantity Q1 can be calculated by an ampere-hour integral method, and the first electric quantity Q1 at full power can be calculated by continuously adjusting the voltage.
After the charging is completed, step S206 is executed, and the vehicle power generation device generates power at the first constant voltage until it is detected that the absolute value of the battery discharging current is less than or equal to the preset starting switching current absolute value or the battery current is the charging current, and the duration is greater than the starting switching time threshold, and then the vehicle power generation device is controlled to switch between the current negative feedback power generation mode and the constant voltage control mode.
The first constant voltage is preferably a voltage required by the preset battery capacity calibration plus a harness voltage drop, wherein the harness voltage drop U _ offset is the harness voltage drop from the finished vehicle power generation equipment to the battery end. The whole vehicle power generation equipment includes but is not limited to: a Generator, an integrated Starter/Generator (IBSG), a direct current converter (DCDC), and the like. The voltage required by the capacity calibration of the storage battery is calibrated through a preset experiment. The SOC percentage range of the battery is set in advance, for example, approximately 80%. And measuring the voltage value of each type of storage battery, and taking the voltage value of the storage battery as the voltage required by the capacity calibration of the storage battery when the SOC reaches the SOC percentage. Under the voltage, the capacities of batteries of different models are relatively close, and sufficient discharge capacity supports capacity correction calculation. In addition, under the voltage, the power utilization requirement of the vehicle can be guaranteed, the battery can be in a healthy electric quantity state, and the service life damage is avoided.
Because the current of the storage battery is greater than 0 for charging and less than 0 for discharging, when the discharging current of the storage battery is greater than a certain negative value and the duration time is greater than the threshold value of the starting switching time, the whole vehicle power generation equipment is controlled to switch between the current negative feedback power generation mode and the constant voltage control mode. Thereby ensuring that the voltage is maintained at the first constant voltage when the storage battery starts to discharge. The battery discharge current is greater than a certain negative value, i.e., the absolute value of the battery discharge current is less than the absolute value of the negative value or the battery current is the charging current. For example, the discharging current of the storage battery is set to be more than or equal to-1A, and the duration is longer than 10min, and then the whole vehicle power generation equipment is controlled to switch between a current negative feedback power generation mode and a constant voltage control mode. The absolute value of the on-switching current under this condition is 1A.
And step S207 is executed, and the whole vehicle power generation equipment is controlled to switch between a current negative feedback power generation mode and a constant voltage control mode.
In the current negative feedback power generation mode, the whole vehicle power generation equipment takes the current of the storage battery as 0 as a target, and the power generation voltage of the whole vehicle power generation equipment is adjusted. Because the current of the storage battery is greater than 0 for charging and less than 0 for discharging, when the current of the storage battery is greater than 0, the voltage of the power generation equipment of the whole vehicle is reduced, when the current of the storage battery is less than 0, the voltage of the power generation equipment of the whole vehicle is increased, and when the electric quantity of the storage battery is 0, the voltage of the power generation equipment of the whole vehicle is not adjusted, so that the current of the storage battery is kept to be 0. And in the constant voltage control mode, the whole vehicle power generation equipment generates power at a first constant voltage.
Under the current negative feedback power generation mode, if the voltage of the storage battery is detected to be smaller than a preset current negative feedback power generation switching voltage value and the duration time is larger than a current negative feedback power generation switching time threshold value, the whole vehicle power generation equipment is switched to a constant voltage control mode, and therefore the voltage is prevented from being excessively reduced when the storage battery is discharged. For example, the discharge voltage of the storage battery < the current negative feedback power generation switching voltage value can be set, and the constant voltage control mode is switched to when the duration is longer than 1 min. The current negative feedback power generation switching voltage value is smaller than the first constant voltage.
In the constant voltage control mode, the secondary battery is charged at the first constant voltage, so that the secondary battery voltage is restored to the first constant voltage again. And if the absolute value of the charging current of the storage battery is smaller than the preset constant voltage switching current value and the duration time is longer than the constant voltage switching time threshold, switching to a current negative feedback power generation mode. Because the current of the storage battery is greater than 0 for charging and less than 0 for discharging, the charging current of the storage battery can be set to be less than or equal to 1A, and the duration time is greater than 1min, and then the current negative feedback power generation mode is switched. The constant voltage switching current value under this condition was 1A.
The storage battery is switched between a current negative feedback power generation mode and a constant voltage control mode until the automobile is shut down. When the vehicle is turned off, step S208 is triggered, and the second battery power Q2 at that time is recorded.
Since the current negative feedback power generation mode targets the battery current as 0, the battery circuit approaches 0 when the second power Q2 is recorded. And in the constant voltage control mode, the storage battery is charged with a first constant voltage, and the first constant voltage is set as a voltage required by the preset storage battery capacity calibration plus a wiring harness voltage drop, so that the storage battery voltage is the voltage required by the storage battery capacity calibration through the wiring harness voltage drop. And when the voltage of the storage battery reaches the voltage required by the capacity calibration of the storage battery, the state of charge of the storage battery is within a preset percentage range of the state of charge. Thus, when the second charge Q2 is recorded, the state of charge of the battery is within a predetermined percentage state of charge range, e.g., near 80% SOC.
Then, in step S209, after the battery is sufficiently stationary, the SOC-OCV table is looked up to obtain SOC1 of the battery, and the current capacity of the battery is estimated as the actually measured battery capacity value by using the capacity calculation formula a ═ Δ Q/(1-SOC1), where the battery capacity value is the ampere-hour integral electric quantity of the battery.
And step S210 to step S211, correcting the original value by using the estimated value, and correcting the nominal capacity of the storage battery recorded in the system.
Specifically, the corrected battery capacity value aCorrectionComprises the following steps:
AcorrectionA (a-a _ d) + a _ d, wherein:
and a is reliability, A is the actually measured storage battery capacity value, A _ d is the storage battery capacity value before correction, the reliability is related to the service time of the storage battery, and the reliability corresponding to a longer service time is greater than or equal to the reliability corresponding to a shorter service time.
A _ d can be the nominal ampere-hour integral electric quantity A of the storage batteryBy defaultA _ d may be the previous value of the battery capacity, and A may be corrected each timeBy defaultIs modified to be ACorrection。
And S212 to S213, dividing the corrected capacity value of the storage battery with the capacity value of the storage battery before correction to obtain a capacity attenuation ratio, wherein the battery capacity attenuation can be used for reminding a customer of the service life quality information of the battery, and reminding is carried out by using an instrument or a mobile phone AOO.
According to the method for correcting the capacity of the automobile storage battery, the capacity of the battery after replacement is accurately calculated by a whole automobile system, the set value of the system is corrected according to the actual battery capacity value, the whole automobile or IBS calculates the correct SOC, the system strategy is correspondingly executed, the normal power supply of the whole automobile is ensured, and the power feeding is reduced. Meanwhile, the whole vehicle system corrects the capacity of the attenuated battery, executes a storage battery electric quantity control strategy according to the system strategy, optimizes the aging acceleration condition of the battery, and prolongs the service life of the storage battery.
EXAMPLE III
Fig. 3 is a flowchart illustrating a method for detecting the capacity of a vehicle battery according to a preferred embodiment of the present invention, which includes:
step S301, IGN ON (vehicle power-ON);
step S302, if the battery monitoring unit needs to be initialized after power failure, the count is set to 0, bCorrection＝0，bDischarge of electricityAnd ends, otherwise, performing step S303, wherein bCorrectionFor initiating a flag bit for a capacity correction procedure, bDischarge of electricityA discharge process flag bit for the capacity correction program;
step S303, if bCorrectionIf the value is 1, entering the automobile storage battery capacity correction logic, otherwise executing the step S304;
step S304, calculating a difference value between the SOC1 and the SOC2, wherein the SOC1 is the IGN OFF of the last time of the whole vehicle, the SOC2 is the normal current IGN ON, and the SOC is the first SOC recorded by the storage battery monitoring unit;
step S305, if abs (SOC2-SOC1) > 5%, count is increased by one, and step S306 is executed, otherwise, the process is ended;
step S306, if count > 3, bCorrectionAnd (4) entering automobile battery capacity correction logic, and otherwise, ending.
Fig. 4 is a flowchart of the operation of the capacity correction logic of the vehicle battery according to the preferred embodiment of the present invention, which includes:
step S401, if b Discharge of electricity1, and the sleep time of the storage battery monitoring unit is less than 24 hours, executing the step S410, otherwise executing the step S402;
step S402, if IGN ON (vehicle power ON) is changed into EGN RUN (vehicle ignition), executing step S403, otherwise executing step S401;
step S403, generating power at a constant voltage of U1 as the second constant voltage;
step S404, if the battery charging current ICharging deviceIf the current value of the storage battery is less than or equal to 1A and the duration t is more than 10min, executing a step S405, otherwise executing a step S403, wherein the storage battery is charged when the current value is more than 0, and is discharged when the current value is less than 0;
step S405, the generating voltage U1 of the whole vehicle is U1-0.2V;
step S406, if the battery charging current ICharging deviceIf the time duration t is less than or equal to 1A and is more than 30S, and the U1 is more than 13.4V, executing the step S405, otherwise executing the step S407;
step S407, the generating voltage U1 of the whole vehicle is U1-0.1V;
step S408, if the battery charging current ICharging deviceIf the time duration t is less than or equal to 0A and is more than 30S, executing a step S409, otherwise, executing a step S407;
step S409, recording the effective ampere-hour integral electric quantity Q1 of the storage battery monitoring unit at the moment when the vehicle generating voltage U1 is equal to U1+0.1V, and setting b Discharge of electricity1, Q1 is calculated by the accumulator monitoring unit by using an ampere-hour integration method or other algorithms introducing correction coefficients or formulas to the ampere-hour integration algorithm, and the unit is Ah, wherein the accumulated value of the effective accumulator charging and discharging electric quantity is recorded;
step S410, if the automobile is in an ignition state (EGN RUN), executing step S411, otherwise executing step S401;
step S411, generating power by the constant voltage of the whole vehicle according to the first constant voltage + U _ offset which is the voltage drop of the wire harness from the power generation equipment (engine, IBSG, DCDC and the like) of the whole vehicle to the storage battery end, wherein U2 is the first constant voltage;
step S412, if the discharging current IPutIf the time duration is more than or equal to-1A and the time duration is more than 10min, executing the step S413, otherwise executing the step S411;
step S413, cyclically switching the current negative feedback power generation mode and the constant voltage control mode, where b _ off is 1;
step S414, if b _ OFF is 1 and IGN OFF, executing step S415, otherwise executing step S411;
step S415, recording effective ampere-hour integral electric quantity Q2 before the storage battery monitoring unit is dormant, wherein Q2 is calculated by the storage battery monitoring unit by using an ampere-hour integral method or other algorithms introducing correction coefficients or formulas into an ampere-hour integral algorithm, and the unit is Ah of an effective storage battery charging and discharging electric quantity accumulated value at the recording moment;
step S416, the storage battery monitoring unit sleeps for a time t, if t is larger than 8 hours (h), the step S417 is executed, otherwise, the step S401 is executed;
in step S417, the storage battery monitoring unit measures the OCV3 of the storage battery, looks up the OCV-SOT-T table to obtain the SOC3 corresponding to the OCV3, and calculates the current full capacity of the battery: a ═ Q1-Q2)/(1-SOC 3);
step S418, calculate:
and (3) capacity value correction: a. theCorrection＝a*(A-ABy default)+ABy default；
Calculating the battery capacity attenuation: a. theCorrection/ABy default*100％；
ABy default＝ACorrection；
Wherein:
a is reliability, A is the measured battery capacity value, ABy defaultThe reliability is related to the service time of the storage battery before correction, and the reliability corresponding to the longer service time is more than or equal to the reliability corresponding to the shorter service time;
the battery capacity attenuation ratio can be used for reminding the quality of the service life of the battery, and when the attenuation ratio is less than a threshold value, the battery needs to be replaced, for example: A/ABy default<0.5, sending reminding information through an instrument or a mobile phone APP;
step S419, count is 0, bCorrection＝0，bDischarge of electricity＝0，b_off＝0。
Fig. 5 is a flow chart showing the operation of the current negative feedback power generation mode and the constant voltage control mode for correcting the battery capacity of the vehicle according to the preferred embodiment of the present invention, which includes:
step S501, the current of the storage battery is used as negative feedback input quantity, and the output of the power generation equipment is adjusted, so that the current of the storage battery is 0;
step S502, if the voltage of the storage battery is less than the current negative feedback power generation switching voltage value and the duration is more than 1min, step S503 is executed, otherwise, step S501 is executed;
step S503, generating power at a constant voltage of the whole vehicle, where U2 is the first constant voltage + U _ offset;
step S504, charging current I of the storage batteryCharging deviceAnd if the time duration is less than or equal to 1A and greater than 1min, executing step S501, otherwise executing step S503.
Example four
Fig. 6 is a schematic diagram of a hardware structure of an electronic device according to the present invention, which includes:
at least one processor 601; and the number of the first and second groups,
a memory 602 communicatively coupled to at least one of the processors 601; wherein,
the memory 602 stores instructions executable by at least one of the processors to enable the at least one processor to perform the method for correcting the capacity of the vehicle battery as described above
In fig. 6, one processor 601 is taken as an example.
The electronic device may further include: an input device 603 and a display device 604.
The processor 601, the memory 602, the input device 603, and the display device 604 may be connected by a bus or other means, and are illustrated as being connected by a bus.
The memory 602, serving as a non-volatile computer-readable storage medium, may be used to store non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the method for correcting the capacity of the automobile battery in the embodiment of the present application, for example, the method flow shown in fig. 1. The processor 601 executes various functional applications and data processing by running the nonvolatile software programs, instructions, and modules stored in the memory 602, that is, implements the vehicle battery capacity correction method in the above-described embodiment.
The memory 602 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the automobile battery capacity correction method, and the like. Further, the memory 602 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, the memory 602 optionally includes memory located remotely from the processor 601, and these remote memories may be connected over a network to a device that performs the vehicle battery capacity correction method. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 603 may receive input of a user click and generate signal inputs related to user settings and function control of the vehicle battery capacity correction method. The display device 604 may include a display screen or the like.
When the one or more modules are stored in the memory 602 and executed by the one or more processors 601, the method for correcting the capacity of the vehicle battery in any of the above-described method embodiments is performed.
The method for correcting the electric quantity of the storage battery corrects the set value of the system according to the actual battery capacity value, ensures normal power supply of the whole vehicle, reduces the occurrence of feed, adopts the corrected and attenuated battery capacity of the whole vehicle system, executes the electric quantity control strategy of the storage battery according to the system strategy, optimizes the aging acceleration condition of the battery, and prolongs the service life of the storage battery. Meanwhile, the method for correcting the capacity of the automobile storage battery detects and corrects the capacity of the automobile storage battery in the using process of the automobile, so that the influence on the use of the automobile by a user is avoided.
An embodiment of the present invention provides a storage medium storing computer instructions for performing all the steps of the automobile battery capacity correction method as described above when a computer executes the computer instructions.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A method for correcting the capacity of an automobile storage battery is characterized by comprising the following steps:
when the automobile is ignited, the storage battery is charged until the preset charging completion condition is met, and the first electric quantity of the storage battery at the moment is recorded;
controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode until the vehicle is flamed out, wherein in the current negative feedback power generation mode, the whole vehicle power generation equipment takes the current of a storage battery as 0 as a target to adjust the power generation voltage of the whole vehicle power generation equipment, and in the constant voltage control mode, the whole vehicle power generation equipment generates power at a first constant voltage;
when the automobile is flamed out, recording the second electric quantity of the storage battery at the moment;
after the preset static time, acquiring the open-circuit voltage of the storage battery, and determining the state of charge corresponding to the open-circuit voltage of the storage battery;
calculating a capacity value of the storage battery according to the first electric quantity, the second electric quantity and the state of charge to serve as an actually measured capacity value of the storage battery;
and obtaining a corrected battery capacity value based on the actually measured battery capacity value.
2. The method for correcting the capacity of the automobile storage battery according to claim 1, wherein the controlling of the entire automobile power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode specifically comprises:
controlling the whole vehicle power generation equipment to switch between a current negative feedback power generation mode and a constant voltage control mode:
under the current negative feedback power generation mode, if the voltage of the storage battery is detected to be smaller than a preset current negative feedback power generation switching voltage value and the duration time is detected to be larger than a current negative feedback power generation switching time threshold value, the whole vehicle power generation equipment is switched to a constant voltage control mode;
and under the constant voltage control mode, if the absolute value of the charging current of the storage battery is detected to be smaller than a preset constant voltage switching current value and the duration time is detected to be larger than a constant voltage switching time threshold value, switching the whole vehicle power generation equipment into a current negative feedback power generation mode.
3. The vehicle storage battery capacity correction method according to claim 2, wherein the first constant voltage is larger than a current negative feedback power generation switching voltage value.
4. The method according to claim 1, wherein the first constant voltage is a preset battery capacity calibration required voltage plus a harness voltage drop, the harness voltage drop is a harness voltage drop from a vehicle power generation device to a battery end, and when the battery voltage reaches the battery capacity calibration required voltage, the state of charge of the battery is within a preset state of charge percentage range.
5. The vehicle battery capacity correction method according to claim 1, wherein before the controlling the vehicle-mounted power generation device to switch between the current negative feedback power generation mode and the constant voltage control mode, the method further comprises:
after the storage battery is charged to meet the preset charging completion condition, the whole vehicle power generation equipment generates power at a first constant voltage until the absolute value of the discharging current of the storage battery is detected to be smaller than or equal to the absolute value of the preset starting switching current or the current of the storage battery is detected to be the charging current, and the duration time is longer than the starting switching time threshold, the whole vehicle power generation equipment is controlled to switch between a current negative feedback power generation mode and a constant voltage control mode.
6. The method for correcting the capacity of the automobile storage battery according to claim 1, wherein when the automobile is ignited, the storage battery is charged until a preset charging completion condition is met, and the recording of the first electric quantity of the storage battery at the moment specifically comprises:
when the automobile is ignited, the storage battery enters a constant-voltage charging mode;
under the constant voltage charging mode, the whole vehicle power generation equipment generates power at a second constant voltage, and if the absolute value of the charging current of the storage battery is detected to be smaller than or equal to a preset charging current value or the current of the storage battery is detected to be a discharging current, and the duration time is longer than the preset first charging time, the storage battery enters a voltage reduction charging mode;
under the step-down charging mode, every interval step-down charging time threshold reduces whole car power generation equipment's voltage, and the electric current of battery satisfies the completion condition of predetermineeing to charge, then records the first electric quantity of battery this moment, the completion condition of charging is: the current of the storage battery is 0 or is a discharge current, and the duration time is longer than the preset second charging time.
7. The method according to claim 6, wherein the step-down charging mode includes a first charging stage and a second charging stage, and in the step-down charging mode, the voltage of the entire vehicle power generation device is reduced at intervals of a step-down charging time threshold until the current of the battery meets a preset charging completion condition, and then the first electric quantity of the battery at the time is recorded, specifically including:
in a step-down charging mode, firstly entering a first charging stage;
in the first charging stage, the voltage of the power generation equipment of the whole vehicle is reduced by a first gradient value every time the charging time threshold is reduced;
if the voltage of the whole vehicle power generation equipment is reduced to a preset stage change voltage threshold value, entering a second charging stage;
and in the second charging stage, reducing the voltage of the whole vehicle power generation equipment by a second gradient value every time when the voltage is reduced and the charging time is a threshold value, recording the first electric quantity of the storage battery at the moment until the current of the storage battery meets a preset charging completion condition, wherein the second gradient value is smaller than the first gradient value.
8. The method for correcting the capacity of an automobile battery according to claim 1, wherein obtaining the corrected battery capacity value based on the measured battery capacity value specifically includes:
calculating a corrected battery capacity value A based on the measured battery capacity valueCorrectionComprises the following steps:
AcorrectionA (a-a _ d) + a _ d, wherein:
a is reliability, a is the measured battery capacity value, and a _ d is the battery capacity value before correction.
9. The method of correcting the capacity of the automobile battery according to claim 8, wherein the reliability is associated with a use time of the battery, and the reliability corresponding to a longer use time is equal to or greater than the reliability corresponding to a shorter use time.
10. The automobile storage battery capacity correction method according to any one of claims 1 to 9, characterized by further comprising:
calculating the ratio of the capacity value of the storage battery after correction to the capacity value of the storage battery before correction;
and if the ratio is smaller than a preset warning ratio, warning operation is executed.
11. The method for correcting the capacity of the automobile storage battery according to any one of claims 1 to 9, wherein when the automobile is ignited, the storage battery is charged until a preset charge completion condition is met, and the recording of the first electric quantity of the storage battery at the moment specifically comprises: when the automobile is ignited, if the storage battery is judged to be required to be corrected, the storage battery is charged until the preset charging completion condition is met, and the first electric quantity of the storage battery at the moment is recorded;
before the step of charging the storage battery to meet the preset charging completion condition and recording the first electric quantity of the storage battery at the moment when the automobile is ignited, the method further comprises the following steps:
acquiring a first charge state of the whole vehicle when the vehicle is flamed out for the previous time and a second charge state of the whole vehicle when the vehicle is ignited, and if the absolute value of the difference value between the first charge state and the second charge state is larger than a preset difference value threshold, judging that the capacity difference value exceeds the limit;
and if the number of times that the capacity difference value exceeds the limit is larger than a preset number threshold, judging that the storage battery needs to be corrected.
12. An electronic device, comprising:
at least one processor; and the number of the first and second groups,
a memory communicatively coupled to at least one of the processors; wherein,
the memory stores instructions executable by at least one of the processors to enable the at least one of the processors to perform the method of correcting a capacity of a battery for a vehicle according to any one of claims 1 to 11.
13. A storage medium storing computer instructions for performing all the steps of the method for correcting a capacity of a vehicle storage battery according to any one of claims 1 to 11 when the computer instructions are executed by a computer.
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| CN113937863A (en) * | 2021-10-30 | 2022-01-14 | 东风汽车有限公司东风日产乘用车公司 | Battery equalization strategy for hybrid system and hybrid vehicle |
| CN113937863B (en) * | 2021-10-30 | 2024-03-19 | 东风汽车有限公司东风日产乘用车公司 | Battery equalization strategy for hybrid system and hybrid vehicle |
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| CN113386627B (en) | 2023-01-31 |
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