KR-20260066608-A - BATTERY LIFE GUIDING APPRARATUS AND BATTERY LIFE GUIDING METHOD FOR ELECTIC VEHICLE

Abstract

A battery life guide device and a battery life guide method for an electric vehicle are provided. The battery life guide method may include the step of determining a data set including a plurality of data points based on vehicle driving data of a plurality of electric vehicles; and the step of processing the data set to generate battery life guide information including a reference guide curve.

Inventors

• 이고운
• 박기범

Assignees

• 주식회사 엘지에너지솔루션

Dates

Publication Date

20260512

Application Date

20250613

Priority Date

20241104

Claims (15)

1. A step of collecting vehicle driving data of multiple electric vehicles; A step of determining a data set including a plurality of data points based on the vehicle driving data of the plurality of electric vehicles, wherein each data point represents the cumulative driving distance and battery life status of any one of the plurality of electric vehicles; and A step of processing the above data set to generate battery life guide information including a reference guide curve, wherein the reference guide curve represents the relationship between accumulated driving distance and battery life status; A battery life guide method including
2. In paragraph 1, The step of generating the above battery life guide information is, A step of deriving the reference guide curve by applying a curve fitting algorithm to the plurality of data points of the above data set; A battery life guide method including
3. In paragraph 2, The above curve fitting algorithm is an exponential curve fitting method, a battery life guide method.
4. In paragraph 1, The step of generating the above battery life guide information is, A step of dividing the above plurality of data points into a plurality of point groups; A step of deriving a plurality of sub-guide curves by individually applying a curve fitting algorithm to the plurality of point groups; and A step of deriving the reference guide curve by synthesizing the plurality of sub-guide curves; A battery life guide method including
5. In paragraph 4, A battery life guide method in which the plurality of data points are divided into the plurality of point groups based on the plurality of distance intervals for the cumulative driving distance or the total number of the plurality of data points.
6. In paragraph 1, The step of generating the above battery life guide information is, A step of dividing the above plurality of data points into a plurality of point groups; A step of deriving a plurality of representative data points associated with the above plurality of point groups; and A step of deriving a reference guide curve by applying a curve fitting algorithm to the plurality of representative data points above; A battery life guide method including
7. In paragraph 1, The step of generating the above battery life guide information is, A step of generating a first derived guide curve by scaling up or shifting up the above reference guide curve; A battery life guide method that further includes
8. In paragraph 1, The step of generating the above battery life guide information is, A step of generating a second derived guide curve by scaling down or shifting down the above reference guide curve; A battery life guide method that further includes
9. In paragraph 1, A step of outputting a battery life evaluation result related to the cumulative driving distance and battery life status of the target electric vehicle based on the battery life guide information in response to a request for battery life evaluation of the target electric vehicle; A battery life guide method that further includes
10. In Paragraph 9, The above battery life evaluation results are, A battery life guide method comprising at least one of a group of battery charging control factors and a group of battery discharging control factors recommended for the above-mentioned target electric vehicle.
11. A computer-readable medium storing a program for executing a battery life guide method according to any one of paragraphs 1 through 10 on a computer.
12. A communication unit for collecting vehicle driving data of multiple electric vehicles; and The processor determines a data set including a plurality of data points based on the vehicle driving data of the plurality of electric vehicles, wherein each data point represents the cumulative driving distance and battery life status of any one of the plurality of electric vehicles. The above processor is, A battery life guide device comprising the step of processing the above data set to generate battery life guide information including a reference guide curve, wherein the reference guide curve represents the relationship between accumulated driving distance and battery life status.
13. In Paragraph 12, The above processor is, A battery life guide device that derives a reference guide curve by applying a curve fitting algorithm to a plurality of data points of the above data set.
14. In Paragraph 12, The above processor is, The above plurality of data points are divided into a plurality of point groups, and A curve fitting algorithm is individually applied to the above plurality of point groups to derive a plurality of sub-guide curves, and A battery life guide device that derives a reference guide curve by synthesizing the plurality of sub-guide curves.
15. In Paragraph 12, The above processor is, The above plurality of data points are divided into a plurality of point groups, and Deriving multiple representative data points associated with the above multiple point groups, and A battery life guide device that derives a reference guide curve by applying a curve fitting algorithm to the above-mentioned plurality of representative data points.

Description

Battery Life Guiding Apparatus and Battery Life Guiding Method for Electric Vehicles The present invention relates to a technology that provides guide information regarding the lifespan status of a battery installed in an electric vehicle. Recently, as the demand for portable electronic products such as laptops, video cameras, and mobile phones has increased rapidly, and the development of electric vehicles, energy storage batteries, robots, and satellites has accelerated, research on high-performance batteries capable of repeated charging and discharging is actively underway. Currently commercialized batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium batteries. Among these, lithium batteries are gaining attention for their advantages, such as the ability to freely charge and discharge with almost no memory effect compared to nickel-based batteries, a very low self-discharge rate, and high energy density. Multiple electric vehicles of the same model are equipped with batteries manufactured to have substantially identical electrochemical performance. Since battery degradation is directly linked to the performance of electric vehicles, a service is required to provide battery life information to electric vehicle users (e.g., drivers, owners). Conventionally, guide information regarding the battery life status based on the cumulative driving distance of an electric vehicle is provided to the user based on data obtained through prior test results or simulations of the battery. However, there is a problem in that the guide information regarding battery life status provided according to the conventional method does not provide much help to the user in efficiently and safely operating the electric vehicle battery, as there are large variations among degradation factors affecting batteries installed in electric vehicles depending on the user's driving habits, charging frequency, and usage environment (e.g., road conditions, regional humidity and/or average temperature), and because preliminary tests are generally conducted for a somewhat limited range (e.g., up to 300,000 km) of driving distance. The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a schematic diagram showing the configuration of a battery life guide system according to one embodiment of the present invention. Figure 2 is a schematic diagram showing the configuration of an electric vehicle. FIG. 3 is a diagram referenced to explain multiple data points based on vehicle driving data of multiple electric vehicles. FIG. 4 is a drawing referenced to explain a guide curve that can be derived from a plurality of data points shown in FIG. 3. FIGS. 5 to 7 are drawings referenced to explain a method for processing a data set according to another embodiment of the present invention. FIG. 8 is a drawing referenced to explain a method for processing a data set according to another embodiment of the present invention. FIG. 9 is a drawing referenced to explain a method for processing a data set according to another embodiment of the present invention. FIG. 10 is a drawing referenced to schematically explain a battery life guide method according to one embodiment of the present invention. FIG. 11 is a diagram referenced to schematically illustrate an example of subroutines that may be included in step S1130 of the method of FIG. 10. FIG. 12 is a diagram referenced to schematically illustrate another example of subroutines that may be included in step S1130 of the method of FIG. 10. FIG. 13 is a diagram referenced to schematically illustrate another example of subroutines that may be included in step S1130 of the method of FIG. 10. FIG. 14 is a diagram referenced to schematically illustrate another example of subroutines that may be included in step S1140 of the method of FIG. 10. Figure 15 is an example of a visualized screen configuration that is remotely serviced to a user according to battery life guide information. FIG. 16 is a drawing referenced to explain additional steps of a battery life guide method that can be executed following the method according to FIG. 10. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention. Theref