CN115856655A - New energy automobile battery real-time state evaluation method, storage medium and electronic equipment - Google Patents
New energy automobile battery real-time state evaluation method, storage medium and electronic equipment Download PDFInfo
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Abstract
The application discloses new energy automobile battery real-time state assessment method, storage medium and electronic equipment, relates to new energy automobile technical field, includes: respectively obtaining the information of the electric quantity increased by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the battery; obtaining the current chargeable maximum capacity information of the battery of the target vehicle according to the information; and obtaining the SOH information of the battery of the target vehicle according to the information of the maximum electric capacity currently chargeable by the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle. This application is through the electric quantity and the SOC variation volume that gather in real time to charge the increase, and then calculates the current chargeable maximum capacitance information of battery, and its ratio relative initial total capacity obtains SOH, does not rely on a large amount of experiments, effectively promotes the aassessment efficiency down going on-line, can obtain the battery current state more accurately, promotes the quality to new energy automobile battery real-time status aassessment.
Description
Technical Field
The application relates to the technical field of new energy vehicles, in particular to a new energy vehicle battery real-time state evaluation method, a storage medium and electronic equipment.
Background
With the increasing popularization of new energy vehicles, the number of the new energy vehicles is gradually increased, and the service life of the battery of the new energy vehicle becomes a key concern of consumers. The health state of the battery is concerned, the safe and reliable operation of the new energy automobile is guaranteed, and meanwhile, the occurrence of safety accidents in the charging process is reduced.
As the battery is used, the battery is aged correspondingly, which results in the attenuation of the battery capacity, and the battery attenuation degree is quantified by a State-of-Hea l th (SOH) index. However, factors affecting the SOH of the battery are complicated, such as the number of charge and discharge cycles, the temperature of the working environment, the characteristics of the battery material itself, and the like, and generally, the peak period of the battery for the pure new energy automobile is about 3 to 5 years, and the performance of the battery gradually decreases as the number of charge and discharge cycles increases until the remaining life of the battery is exhausted.
The existing battery health state evaluation methods are various, such as an SOH electrochemical model evaluation method, but a large number of experiments on batteries need to be carried out under laboratory conditions, and most of the existing electrochemical model methods only aim at single batteries and cannot be applied to power battery packs formed by connecting tens of thousands of single batteries in series and parallel.
If an SOH equivalent circuit model is adopted, the interior of the battery pack is equivalent to an RC circuit model, OCV-SOC is an important basic curve in the battery, but the application premise is that the OCV-SOC curve needs to be known, the one-to-one correspondence relationship between the open-circuit voltage and the state of charge of the battery needs to be measured under experimental conditions, and in addition, the curve drifts under the influence of temperature, so that the equivalent circuit method is not suitable for measuring and calculating the SOH value in an actual working condition.
The method comprises the steps of obtaining an SOC (percent of remaining capacitance) estimated value by using an ampere-hour integration method, establishing a state equation and a measurement equation of unscented Kalman filtering by using Gaussian process regression fitting, taking the SOC estimated value of the current vehicle power battery capacity as a Kalman filtering observed value, combining the state equation and the measurement equation of unscented Kalman filtering, and carrying out unscented Kalman filtering iteration to obtain the SOH estimated value of the charging cycle by quotient of the current power battery total capacity and the factory-delivered total capacity.
The above evaluation mode adopts off-line evaluation, the vehicle needs to be separated from the running state, a large amount of resources are consumed through manual field evaluation or experimental evaluation under laboratory conditions, the detection period is long, too much parameter data is introduced by adopting an on-line evaluation mode, the efficiency is low, the accuracy and the efficiency of the evaluation mode are low under the condition that the number of new energy vehicles is increased rapidly, and the evaluation quality obviously cannot meet the actual requirement.
Disclosure of Invention
The application mainly aims to provide a new energy automobile battery real-time state evaluation method, a storage medium and electronic equipment, and aims to solve the problem that in the prior art, the quality of evaluation of the battery state of a new energy automobile is low.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, an embodiment of the application provides a new energy automobile battery real-time state evaluation method, which includes the following steps:
respectively obtaining the information of the electric quantity increased by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the remaining capacity of the battery;
acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery;
and obtaining the SOH information of the battery of the target vehicle according to the information of the current chargeable maximum capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle.
In a possible implementation manner of the first aspect, before obtaining information of an amount of electricity added to a battery of a target vehicle during charging and information of a percentage SOC variation of the battery, respectively, the method for estimating a real-time state of a battery of a new energy vehicle further includes:
obtaining the change relation of the charging current of the target vehicle along with the charging time;
acquiring charging information in the charging process according to the change relation;
and acquiring the information of the electric quantity increased by the battery of the target vehicle in the charging process according to the charging information.
In one possible implementation manner of the first aspect, the charging information in the charging process includes: total charging time information and per-minute sampled current value information;
according to the charging information, acquiring the information of the electric quantity increased by the battery of the target vehicle in the charging process, comprising the following steps:
and according to the charging information in the charging process, the information of the electric quantity increased by the battery of the target vehicle in the charging process is obtained by adopting summation calculation.
In a possible implementation manner of the first aspect, before obtaining information of an amount of electricity added to a battery of a target vehicle during charging and information of a percentage SOC variation of the battery, respectively, the method for estimating a real-time state of a battery of a new energy vehicle further includes:
respectively acquiring the SOC information of the residual capacity percentage of a corresponding battery of a target vehicle at the beginning and the end of the charging process;
and acquiring the residual capacitance percentage SOC variation information of the battery of the target vehicle in the charging process according to the residual capacitance percentage SOC information of the corresponding battery at the beginning and the end of the charging process.
In one possible implementation manner of the first aspect, obtaining information of a maximum capacity at which a battery of the target vehicle is currently chargeable according to information of an amount of charge added to the battery and information of a change in a remaining capacity percentage SOC of the battery includes:
and calculating to obtain the current chargeable maximum capacity information of the battery of the target vehicle according to the equal proportion method according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery.
In one possible implementation manner of the first aspect, obtaining battery state of health, SOH, information of the target vehicle to complete the evaluation of the battery state of the target vehicle according to information of a maximum electric capacity that the battery of the target vehicle is currently chargeable and information of an initial total capacity of the battery of the target vehicle, includes:
obtaining the current attenuation condition of the battery of the target vehicle according to the ratio of the current chargeable maximum capacity information of the battery of the target vehicle to the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle; wherein, the current attenuation condition of the battery is the representation of the SOH information of the battery.
In one possible implementation manner of the first aspect, before obtaining the battery state of health (SOH) information of the target vehicle according to the information on the maximum current chargeable capacity of the battery of the target vehicle and the information on the initial total capacity of the battery of the target vehicle to complete the estimation of the battery state of the target vehicle, the method for estimating the real-time state of the new energy automobile battery further comprises:
according to historical data in the using process of the vehicle, establishing a corresponding relation between the SOH information of the battery of the vehicle and the using condition of the vehicle;
after obtaining the battery state of health (SOH) information of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the information of the initial total capacity of the battery of the target vehicle to complete the evaluation of the battery state of the target vehicle, the method for evaluating the real-time state of the battery of the new energy automobile further comprises the following steps:
and obtaining the current service condition of the target vehicle according to the SOH information and the corresponding relation of the battery health state of the target vehicle.
In one possible implementation manner of the first aspect, after obtaining the battery state of health (SOH) information of the target vehicle according to the information on the maximum current chargeable capacity of the battery of the target vehicle and the information on the initial total capacity of the battery of the target vehicle, to complete the evaluation of the battery state of the target vehicle, the real-time state evaluation method for the new energy vehicle battery further includes:
and adjusting the current charging parameters of the target vehicle according to the SOH information of the battery of the target vehicle and the corresponding theoretical charging parameters.
In a second aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is loaded and executed by a processor, the method for estimating a real-time state of a new energy vehicle battery provided in any one of the above first aspects is implemented.
In a third aspect, an embodiment of the present application provides an electronic device, including a processor and a memory, wherein,
the memory is used for storing a computer program;
the processor is used for loading and executing a computer program to enable the electronic device to execute the new energy automobile battery real-time state evaluation method provided by any one of the first aspect.
Compared with the prior art, the beneficial effects of this application are:
the embodiment of the application provides a new energy automobile battery real-time state evaluation method, a storage medium and an electronic device, which include: respectively obtaining the information of the electric quantity increased by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the battery; acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery; and obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle. According to the method, the information of the vehicle in the charging process is collected in real time to realize on-line evaluation, according to the SOC display condition of the existing new energy vehicle battery and data provided by a manufacturer, the initial total capacity information of the battery and the residual capacity percentage SOC variation information of the battery are parameters which are easy to obtain, and then the maximum capacity information which can be charged at present of the battery is obtained through real-time data calculation.
Drawings
Fig. 1 is a schematic structural diagram of an electronic device in a hardware operating environment according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a method for evaluating a real-time state of a new energy vehicle battery according to an embodiment of the present application;
fig. 3 is a logic diagram of a new energy vehicle battery real-time status evaluation method provided in an embodiment of the present application in an implementation manner;
fig. 4 is a functional module schematic diagram of a new energy vehicle battery real-time status evaluation device according to an embodiment of the present application;
the mark in the figure is: 101-processor, 102-communication bus, 103-network interface, 104-user interface, 105-memory.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method comprises the steps of respectively obtaining the information of the electric quantity added by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the remaining capacity of the battery; acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery; and obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device in a hardware operating environment according to an embodiment of the present application, where the electronic device may include: a processor 101, such as a Central Processing Unit (CPU), a communication bus 102, a user interface 104, a network interface 103, and a memory 105. Wherein the communication bus 102 is used for enabling connection communication between these components. The user interface 104 may include a display screen (Di sp ay), an input unit such as a Keyboard (Keyboard), and the optional user interface 104 may also include a standard wired interface, a wireless interface. The network interface 103 may optionally include a standard wired interface, a wireless interface (e.g., a WI re l ess-fdel I ty, WI-fi) interface). The Memory 105 may be a storage device independent from the processor 101, and the Memory 105 may be a high-speed Random Access Memory (RAM) Memory or a Non-Vo at i Memory (NVM), such as at least one disk Memory; the processor 101 may be a general-purpose processor including a central processing unit, a network processor, etc., and may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the electronic device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 105, which is a storage medium, may include therein an operating system, a data storage module, a network communication module, a user interface module, and an electronic program.
In the electronic device shown in fig. 1, the network interface 103 is mainly used for data communication with a network server; the user interface 104 is mainly used for data interaction with a user; the processor 101 and the memory 105 in the application can be arranged in an electronic device, and the electronic device calls the new energy automobile battery real-time state evaluation device stored in the memory 105 through the processor 101 and executes the new energy automobile battery real-time state evaluation method provided by the embodiment of the application.
Referring to fig. 2, based on the hardware device of the foregoing embodiment, an embodiment of the present application provides a new energy vehicle battery real-time status evaluation method, including the following steps:
s10: and respectively obtaining the information of the electric quantity increased by the battery of the target vehicle in the charging process and the information of the percentage SOC variation of the battery.
In a specific implementation process, a target vehicle refers to a new energy vehicle needing battery state evaluation, a battery of the new energy vehicle has charge and discharge capacity, a charge process refers to a primary charge process from the time when the vehicle is connected to a power grid to the time when the vehicle leaves the power grid based on the charge requirement, for the new energy vehicle, charge is almost completed through a charge gun, namely the vehicle starts to charge from the time when the charge gun is inserted until the charge gun is disconnected, and the electric quantity increased by the battery in the period is regarded as the charged electric energy, and the electric quantity can be obtained by calculation according to performance parameters of the battery, such as the charging current size, the charging duration and the like. The remaining capacity percentage SOC variation information of the battery is a representation of the variation of the battery capacity, and from the practical situation, the battery capacity of the new energy vehicle can be almost displayed to the user in percentage form, and the percentage data is data that is relatively easy to obtain, for example, the displayed capacity before the start of charging is ten percent, and the displayed capacity after the end of a charging process is eighty percent, so the capacity variation percentage is seventy percent.
S20: and acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery.
In a specific implementation process, the electric quantity change percentage of the battery and the electric quantity increased by the battery are both a representation form of the charged electric quantity in an actual state, the currently chargeable maximum electric capacity information is a representation of the current electric storage capacity of the battery, and changes along with the use condition of the battery, so that the current state of the battery can be effectively represented, which is also a reason for evaluating the information in the embodiment of the present application, and the remaining electric capacity percentage SOC change information can be obtained in advance before step S20, that is:
respectively acquiring residual capacity percentage SOC information of a corresponding battery of a target vehicle at the beginning and the end of a charging process;
and acquiring the residual capacity percentage SOC variation information of the battery of the target vehicle in the charging process according to the residual capacity percentage SOC information of the corresponding battery at the beginning and the end of the charging process.
S201: and calculating to obtain the current chargeable maximum capacity information of the battery of the target vehicle according to the equal proportion method according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery.
In the implementation, the State of Charge of the vehicle battery may be represented by SOC (State of Charge), which is also called percentage of remaining capacity, and represents the capacity of the battery to continue operating. SOC is generally a ratio of a charging capacity to a full-rated battery capacity, expressed in percentage, indicating that a battery is completely discharged when SOC =0 and indicating that the battery is completely charged when SOC =100%, and both SOC and electric capacity are parameters that can be used to represent a battery state, and have a proportional relationship, and are obtained by an equal-proportion algorithm, and a calculation formula is as follows:
S30: and obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle.
In a specific implementation process, the initial total capacity of the battery, that is, the factory capacity, and the current state of the battery may have various expression forms, such as a fading condition, an electric power storage capacity, and a remaining service life, and these states may be reflected by the capacity of the battery, and based on the data acquisition manner of the embodiment of the present application, the capacitance information is the state of the battery in a real-time state of the reaction, for example, the smaller the rechargeable maximum capacity of the battery is, the weaker the electric power storage capacity of the battery is, the higher the fading degree of the battery is, and the shorter the remaining service life is, and the current state of the battery may be reflected according to the state information, so as to realize the evaluation of the battery state.
S301: obtaining the current attenuation condition of the battery of the target vehicle according to the ratio of the current chargeable maximum capacity information of the battery of the target vehicle to the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle; wherein, the current attenuation condition of the battery is the representation of the SOH information of the battery.
In the concrete implementation process, because in various representation forms of the battery state, the service life and the storage capacity are all indexes with a relatively low range, which are difficult to reflect to users through precise representation forms, and these index parameters are only one suggested parameter in the automobile production and manufacture, in this embodiment, the battery decay condition is adopted to reflect the battery state, that is, the SOC index is returned to the common SOH index, the decay condition can be accurately obtained through the current rechargeable maximum capacity information of the battery, and the object for obtaining the decay condition by comparison is a parameter which can be accurately quantized, that is, the initial total capacity of the battery, and the actual total capacity of the battery is continuously reduced along with the use of the battery, that is, the storage capacity of the battery is continuously attenuated, the calculation formula is as follows:
In the embodiment, real-time online evaluation is realized through the information of the vehicle in the charging process acquired in real time, according to the SOC display condition of the existing new energy vehicle battery and data provided by a manufacturer, the increased electric quantity of the battery in the current charging process and the percentage SOC of the residual capacitance of the battery are parameters which are easy to obtain, and then the current chargeable maximum capacitance information of the battery can be calculated.
In one embodiment, before obtaining information of an amount of electricity added to a battery of a target vehicle during charging and information of a percentage SOC variation of a remaining capacity of the battery, respectively, the method for estimating a real-time state of a battery of a new energy vehicle further includes:
obtaining the change relation of the charging current of the target vehicle along with the charging time;
acquiring charging information in the charging process according to the change relation;
acquiring the information of the electric quantity increased by the battery of the target vehicle in the charging process according to the charging information;
in the specific implementation process, since the use state of the battery is directly reflected on the charging current condition, it is necessary to control the change of the charging current before obtaining the electric quantity information so as to improve the quality of the evaluation, the data may be derived from historical data accumulated in the industry by research on the use process of the battery, and the charging information in the charging process may include: total charging time information, current value information sampled per minute, and the like.
Specifically, obtaining information of an amount of electricity that the battery of the target vehicle increases during charging, based on the charging information, includes:
and according to the charging information in the charging process, the information of the electric quantity increased by the battery of the target vehicle in the charging process is obtained by adopting summation calculation.
The formula for the calculation is as follows:
In one embodiment, before obtaining the battery state of health (SOH) information of the target vehicle according to the information on the maximum current chargeable capacity of the battery of the target vehicle and the information on the initial total capacity of the battery of the target vehicle to complete the estimation of the battery state of the target vehicle, the method for estimating the real-time state of the battery of the new energy automobile further comprises the following steps:
establishing a corresponding relation between the SOH information of the battery of the vehicle and the service condition of the vehicle according to historical data of the vehicle in the service process;
after obtaining the battery state of health (SOH) information of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the information of the initial total capacity of the battery of the target vehicle to complete the evaluation of the battery state of the target vehicle, the method for evaluating the real-time state of the battery of the new energy automobile further comprises the following steps:
and obtaining the current service condition of the target vehicle according to the SOH information and the corresponding relation of the battery health state of the target vehicle.
In the specific implementation process, the use of the battery is certainly accompanied with the use of the automobile, for a user, it is more convenient for the evaluation of the battery state to directly obtain information related to the use condition of the vehicle, as for the general public, it is obvious that the informing of the vehicle state is more definite than the informing of the battery information, so that the corresponding relationship between the battery and the use condition of the vehicle can be established according to historical data in the use process of the vehicle, and after the corresponding relationship is obtained, the current use condition of the vehicle can be directly and quickly obtained through the evaluation of the battery. For example, the following table is established by historical data:
| number of battery charging cycles | 0 | 50 | 100 | 200 | 400 | 800 | 1000 | 1200 | 1100 | … | 2000 |
| Maximum battery capacity (ah) of vehicle | 70 | 70 | 69 | 68 | 65 | 60 | 55 | 50 | 48 | 40 | |
| Current full charge mileage (km) | 600 | 600 | 594 | 582 | 558 | 552 | 498 | 480 | 468 | … | 360 |
| SOH | 1.00 | 1.00 | 0.99 | 0.97 | 0.93 | 0.92 | 0.83 | 0.80 | 0.78 | … | 0.6 |
The table has SOH data, and the maximum capacity and full charge mileage of the vehicle battery can be intuitively obtained according to the SOH data, that is, the battery in a full-charge state can run a long distance after being completely discharged once, and the battery charge cycle number in the table indicates the number of times that the accumulated percentage of the battery charge is full of 100%, because the vehicle is hardly charged from 0% to 100%, which is a means for improving the evaluation accuracy in consideration of the actual use, for example, fifty percent is charged for a certain time, eighty percent is charged for the next time, one hundred thirty percent is charged for the accumulated percentage, the counted cycle charge number is 1.3, and the data is calculated from the factory of the battery, and the cycle charge number is continuously accumulated for each charge. The information can reflect the use condition of the vehicle, for example, from the view of the number of times of battery cycle charging, the number of times of use can be specified, which indicates that the battery needs to be replaced, the accumulated driving mileage can be calculated by combining the driving mileage, and after the specified course is reached, the service life of the vehicle is reached, for example, the vehicle needs to be forcibly scrapped after the operating vehicle reaches 60 kilometers.
In one embodiment, after obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the information of the initial total capacity of the battery of the target vehicle to complete the estimation of the battery state of the target vehicle, the real-time state estimation method of the new energy automobile battery further includes:
and adjusting the current charging parameters of the target vehicle according to the SOH information of the battery of the target vehicle and the corresponding theoretical charging parameters.
In the specific implementation process, after the battery is evaluated, a user can be correspondingly guided to perform optimization operation according to the evaluation result, the value of the evaluation on the battery is extended, a manufacturer can provide charging voltage and current relations of different batteries in different use stages according to the manufactured battery, namely, along with the performance attenuation of the battery, the charging voltage and current need to be correspondingly adjusted to achieve the optimal charging effect in the current state, namely, theoretical charging parameters corresponding to the current state of the battery, the charging parameters of the vehicle battery are controlled, namely, the input voltage and current are regulated and controlled, and the optimization can be completed. Under the normal condition, when the SOH is lower than 85%, a user is reminded to pay attention to daily battery charging maintenance, complete full-charging and discharging operation must be carried out once a month, if the SOH is less than or equal to 80%, the user is reminded of needing to replace the battery in time, and otherwise, great vehicle using potential safety hazards exist.
On the basis, the original charging voltage and current curve data of the vehicle can be corrected correspondingly at regular intervals, the corresponding charging voltage and current curve database is updated at regular intervals mainly aiming at new vehicle batteries continuously released by manufacturers, the authority of reference data is guaranteed, and the accuracy of SOH data online estimation is improved.
The method of the present application is further described in its embodiments with reference to the flow diagram of fig. 3 in conjunction with the application scenario:
firstly, establishing an original vehicle full-charging voltage and current curve, wherein full charging refers to full charging;
recording a charging voltage and current curve of a vehicle segment, wherein the segment is the acquired current charging process;
then calculating the increased electric quantity of the battery and recording the electric quantity change percentage of the battery, and calculating according to an equal proportion algorithm to obtain the current chargeable maximum electric capacity of the battery, and correspondingly obtaining the current SOH;
after the SOH is obtained, the SOH can be evaluated, whether optimization is needed or not is judged, if the optimization is needed, the input voltage and the input current are controlled according to the means provided by the embodiment, and if the optimization is not needed, prompt information can be generated to prompt a user that the current battery health state is good, and the vehicle using habit is continuously kept;
under continuous monitoring, if the SOH obtained by evaluation is less than or equal to eighty percent, the user needs to be prompted to replace the battery in time, otherwise, potential safety hazards exist, and if the SOH is higher than eighty percent, the user does not need to be reminded to replace the battery, and only if the SOH is lower than eighty percent, the user needs to be reminded to pay attention to daily charging maintenance, complete charging and discharging are carried out at least once every month, positive and negative ions in the battery move, the flow is kept, the maximum efficacy of the battery is exerted, and the service life of the battery is prolonged.
Referring to fig. 4, based on the same inventive concept as that in the foregoing embodiment, an embodiment of the present application further provides a new energy vehicle battery real-time status evaluation apparatus, including:
the first obtaining module is used for respectively obtaining the information of the electric quantity increased by the battery of the target vehicle in the charging process and the information of the SOC (state of charge) variable quantity of the battery;
the second obtaining module is used for obtaining the current chargeable maximum electric capacity information of the battery of the target vehicle according to the electric quantity information increased by the battery and the residual capacity percentage SOC variation information of the battery;
and the evaluation module is used for obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle.
It should be understood by those skilled in the art that the division of each module in the embodiment is only a division of a logic function, and all or part of the division may be integrated onto one or more actual carriers in actual application, and all of the modules may be implemented in a form called by a processing unit through software, or may be implemented in a form of hardware, or implemented in a form of combination of software and hardware.
Based on the same inventive concept as that in the foregoing embodiments, embodiments of the present application further provide a computer-readable storage medium, which stores a computer program, and when the computer program is loaded and executed by a processor, the method for estimating the real-time state of the new energy vehicle battery provided in the embodiments of the present application is implemented.
In addition, based on the same inventive concept as the foregoing embodiments, the embodiments of the present application further provide an electronic device, which at least includes a processor and a memory, wherein,
the memory is used for storing a computer program;
the processor is used for loading and executing a computer program so as to enable the electronic device to execute the new energy automobile battery real-time state evaluation method provided by the embodiment of the application.
In some embodiments, the computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, flash, magnetic surface memory, optical disk, or CD-ROM; or may be various devices including one or any combination of the above memories. The computer may be a variety of computing devices including intelligent terminals and servers.
In some embodiments, executable instructions may be written in any form of programming language (including compiled or interpreted languages), in the form of programs, software modules, scripts or code, and may be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit suitable for use in a computing environment.
By way of example, executable instructions may correspond, but do not necessarily have to correspond, to files in a file system, and may be stored in a portion of a file that holds other programs or data, such as in one or more scripts in a hypertext Markup Language (HTML) document, in a single file dedicated to the program in question, or in multiple coordinated files (e.g., files that store one or more modules, sub-programs, or portions of code).
By way of example, executable instructions may be deployed to be executed on one computing device or on multiple computing devices at one site or distributed across multiple sites and interconnected by a communication network.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of other like elements in a process, method, article, or system comprising the element.
The sequence of the embodiments of the present application is merely for description, and does not represent the advantages and disadvantages of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (e.g., a rom/ram, a magnetic disk, an optical disk) and includes instructions for enabling a multimedia terminal (e.g., a mobile phone, a computer, a television receiver, or a network device) to execute the method of the embodiments of the present application.
In summary, the application provides a new energy vehicle battery real-time status evaluation method, a storage medium and an electronic device, by: respectively obtaining the information of the electric quantity increased by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the battery; acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the residual capacity of the battery; and obtaining the SOH information of the battery of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle. According to the method, the information of the vehicle in the charging process is collected in real time to realize on-line evaluation, according to the SOC display condition of the battery of the existing new energy vehicle and the data provided by a manufacturer, the initial total capacity information of the battery and the residual capacity percentage SOC variation information of the battery are parameters which are easy to obtain, and the current chargeable maximum capacity information of the battery is calculated through real-time data.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A new energy automobile battery state real-time evaluation method is characterized by comprising the following steps:
respectively obtaining the information of the electric quantity increased by a battery of a target vehicle in the charging process and the information of the percentage SOC variation of the battery;
acquiring the current chargeable maximum capacity information of the battery of the target vehicle according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the battery;
and obtaining the SOH information of the battery of the target vehicle according to the information of the current chargeable maximum capacity of the battery of the target vehicle and the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle.
2. The method for estimating the real-time state of the new energy automobile battery according to claim 1, wherein before the information of the amount of electricity added to the battery of the target vehicle during the charging process and the information of the amount of change in the percentage SOC of the remaining capacity of the battery are respectively obtained, the method for estimating the real-time state of the new energy automobile battery further comprises:
obtaining the change relation of the charging current of the target vehicle along with the charging time;
acquiring charging information in the charging process according to the change relation;
and acquiring the information of the electric quantity increased by the battery of the target vehicle in the charging process according to the charging information.
3. The method for estimating the real-time state of the new energy automobile battery according to claim 2, wherein the charging information in the charging process comprises: total charging time information and per-minute sampled current value information;
the obtaining of the information of the electric quantity increased by the battery of the target vehicle in the charging process according to the charging information comprises:
and according to the charging information in the charging process, obtaining the information of the electric quantity increased by the battery of the target vehicle in the charging process by adopting summation calculation.
4. The method for estimating the real-time state of the new energy automobile battery according to claim 1, wherein before the information of the amount of electricity added to the battery of the target vehicle during the charging process and the information of the amount of change in the percentage SOC of the remaining capacity of the battery are respectively obtained, the method for estimating the real-time state of the new energy automobile battery further comprises:
respectively acquiring residual capacity percentage SOC information of a corresponding battery of the target vehicle at the beginning and the end of the charging process;
and acquiring the residual capacitance percentage SOC variation information of the battery of the target vehicle in the charging process according to the residual capacitance percentage SOC information of the corresponding battery at the beginning and the end of the charging process.
5. The method for estimating the real-time state of the new energy automobile battery according to claim 1, wherein the obtaining of the information of the maximum current chargeable capacity of the battery of the target vehicle according to the information of the increased electric quantity of the battery and the information of the change of the remaining capacity percentage SOC of the battery comprises:
and calculating and obtaining the current chargeable maximum capacity information of the battery of the target vehicle according to the equal proportion method according to the information of the electric quantity increased by the battery and the information of the percentage SOC variation of the battery.
6. The real-time new energy automobile battery state evaluation method according to claim 1, wherein the obtaining of the target vehicle battery state of health (SOH) information according to the target vehicle battery current chargeable maximum capacity information and the target vehicle battery initial total capacity information to complete the evaluation of the target vehicle battery state comprises:
obtaining the current attenuation condition of the battery of the target vehicle according to the ratio of the current chargeable maximum capacity information of the battery of the target vehicle to the initial total capacity information of the battery of the target vehicle so as to complete the evaluation of the battery state of the target vehicle; wherein the current attenuation condition of the battery is the representation of the SOH information of the battery.
7. The real-time state evaluation method for the new-energy automobile battery according to claim 1, wherein before obtaining the SOH information of the target vehicle according to the information of the maximum current chargeable capacity of the target vehicle battery and the initial total capacity information of the target vehicle battery, the real-time state evaluation method for the new-energy automobile battery further comprises:
according to historical data in the using process of a vehicle, establishing a corresponding relation between SOH information of the battery of the vehicle and the using condition of the vehicle;
after obtaining the battery state of health (SOH) information of the target vehicle according to the information of the maximum current chargeable capacity of the battery of the target vehicle and the information of the initial total capacity of the battery of the target vehicle to complete the evaluation of the battery state of the target vehicle, the method for evaluating the real-time state of the battery of the new energy automobile further comprises the following steps:
and obtaining the current service condition of the target vehicle according to the SOH information of the battery of the target vehicle and the corresponding relation.
8. The method for estimating the real-time state of a new energy automobile battery according to claim 1, wherein after obtaining the SOH information of the battery health state of the target vehicle according to the information on the maximum capacity of the target vehicle to which the battery is currently chargeable and the information on the initial total capacity of the target vehicle battery, the method for estimating the real-time state of the new energy automobile battery further comprises:
and adjusting the current charging parameters of the target vehicle according to the SOH information of the battery of the target vehicle and the corresponding theoretical charging parameters.
9. A computer-readable storage medium storing a computer program which, when loaded and executed by a processor, implements the method for real-time state estimation of a new energy vehicle battery according to any one of claims 1 to 8.
10. An electronic device comprising a processor and a memory, wherein,
the memory is used for storing a computer program;
the processor is used for loading and executing the computer program to enable the electronic equipment to execute the real-time state evaluation method of the new energy automobile battery according to any one of claims 1-8.
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| CN117955218A (en) * | 2024-03-27 | 2024-04-30 | 福建力将光智能科技有限公司 | MPPT-based solar street lamp control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117955218A (en) * | 2024-03-27 | 2024-04-30 | 福建力将光智能科技有限公司 | MPPT-based solar street lamp control system |
| CN117955218B (en) * | 2024-03-27 | 2024-06-04 | 福建力将光智能科技有限公司 | MPPT-based solar street lamp control system |
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