Battery management method considering environmental variables according to use of product equipped with battery

Abstract

The present invention relates to a battery management method considering environmental variables according to the use of a product equipped with a battery, and proposes a method for managing a battery in real time, wherein when a product (finished product) including an electric vehicle is manufactured with a battery provided by an original equipment manufacturer (OEM) and used, in order to resolve the difficulty in substantially managing the battery with limited information provided through a third-party open application program interface (API) of a battery management system (BMS) for the battery manufactured by the OEM, environmental variables related to a current use (driving) environment of a product equipped with the battery manufactured by the OEM are considered.

Description

Battery management method considering environmental variables according to the use of battery-equipped products

[0001] The present invention relates to a battery management method that takes into account environmental variables according to the use of a product equipped with a battery, and more specifically, in the case where a product (finished product) including an electric vehicle is manufactured and used with a battery provided by an OEM (Original Equipment Manufacturer), it is difficult to actually manage the battery with limited information provided through a third-party open API (application program interface) of a BMS (battery management system) for the battery manufactured by the OEM. In order to solve this problem, a method for managing the battery in real time by taking into account environmental variables related to the current use (operation) environment of a product equipped with a battery manufactured by the OEM is proposed.

[0002] Advances in industrial technology and battery manufacturing technology have led to the development of batteries that can be used for long periods of time until their lifespan ends through repeated charging and discharging, and these batteries are now being installed in various products.

[0003] Most of these batteries are manufactured by Original Equipment Manufacturers (OEMs) and used in a variety of products, including electric vehicles.

[0004] The above OEM provides battery status information, including SOC (state of charge), through the third-party open API of the BMS for the manufactured battery, enabling battery management.

[0005] In particular, as electric vehicles that use battery power as a power source have become more popular, public interest in electric vehicle battery management has increased.

[0006] The battery status information, including the SOC, provided through a third-party open API for the battery's BMS is estimated using only the battery's current, voltage, and (internal) temperature. However, because batteries are significantly affected by environmental variables, including external temperature changes, the limited battery status information provided through the third-party open API makes practical battery management difficult.

[0007] In addition, in order to efficiently manage the battery installed in the product, not only the battery status information but also various information based on the actual use of the product is required.

[0008] For example, various information is needed, such as alarms for battery misuse, battery energy that needs to be charged, and optimal energy settings for electric vehicle operation.

[0009] Additionally, if we could provide a stress index for the battery due to incorrect use (misuse) of the battery, we would be able to manage the battery more efficiently.

[0010] Therefore, the present invention proposes a method for efficiently managing a battery by providing battery management information according to actual use of the battery by reflecting environmental variables according to the use of a product equipped with a battery.

[0011] In addition, the present invention proposes a method of collecting battery status information provided through a third-party open API for a BMS of a battery, and estimating precise battery status information by reflecting environmental variables according to the use of a product equipped with a battery to the collected battery status information, thereby providing battery management information according to actual use.

[0012] In addition, the present invention proposes a method of collecting environmental variables according to actual use of a product, including weather condition information collected from the Korea Meteorological Administration, product installation condition information including battery current, voltage, temperature or a combination thereof collected through a separate device mounted on the product, driving condition information including speed, location information, distance to destination information or a combination thereof, and charging condition information collected through a charger, and determining whether the battery is being misused through the collected environmental variables and estimated battery condition information to provide an alarm, and calculating a battery stress index to provide battery management information according to actual use.

[0013] In addition, the present invention proposes a method of providing battery management information according to actual use, including battery energy to be charged and optimal energy setting information, by using estimated battery status information and operating status information of collected environmental variables.

[0014] Next, we will briefly explain the prior art existing in the technical field of the present invention, and then describe the technical details that the present invention seeks to achieve differently from the prior art.

[0015] First, Korean Patent Publication No. 2023.0040808 (March 23, 2023) relates to a battery management device, a battery system, and an operating method thereof, and relates to a battery management device, a battery system, and an operating method thereof that provides battery status information including at least one of voltage, current, and temperature of a battery pack and diagnosis result information related to abnormality diagnosis of a battery pack based on the battery status information to a higher controller or another battery management device.

[0016] The above Korean Patent Publication No. 2023.0040808 simply provides a diagnosis result based on one of battery current, voltage, and temperature, and does not describe a method for providing battery management information including battery status information, alarms due to battery misuse, battery stress index, battery energy to be charged based on actual use of the product, and optimal energy setting information by reflecting the environmental variables proposed in the present invention. Therefore, the two inventions have significant differences in their technical structure, purpose, and effect.

[0017] In addition, Korean Patent No. 1718552 (March 15, 2017) relates to a battery management system and method for an electric vehicle, and relates to a battery management system and method for an electric vehicle that manages a battery through a charging unit that charges an electric vehicle and generates fully charged battery information including any one of charging capacity, number of charging times, charging location, charging time, and remaining lifespan, and a central server that receives and stores fully charged battery information from the charging unit.

[0018] In other words, Korean Patent No. 1718552 simply stores and manages information on a fully charged battery when charging an electric vehicle battery.

[0019] On the other hand, the present invention provides more precise battery status information as actual use battery management information by reflecting environmental variables according to product use to battery status information collected from a third-party open API for the battery's BMS. The Korean Patent No. 1718552 does not describe, suggest, or imply any technical features of the present invention.

[0020] The present invention was created to solve the above problems, and its purpose is to provide a battery management method that takes into account environmental variables according to the use of a product equipped with a battery, which provides battery management information according to the actual use of the battery, taking into account environmental variables according to the actual use of the battery.

[0021] In addition, the present invention aims to provide a method for collecting battery status information including SOC through a third-party open API, and estimating and providing more precise battery status information even in the event of rapid temperature changes by reflecting local weather information included in the collected environmental variables to the collected status information.

[0022] In addition, the present invention provides a method for collecting environmental variables including product mounting status information including battery current, voltage, temperature or a combination thereof from a separate device provided in the product, operating status information of the product (electric vehicle), and charging status information including battery current, voltage, temperature or a combination thereof measured during charging from a charger that charges the product, and providing an alarm according to battery misuse by using the estimated battery status information and the product mounting status information, operating status information, and charging status information of the collected environmental variables.

[0023] In addition, the present invention aims to provide a method for calculating and providing a battery stress index according to battery misuse.

[0024] In addition, the present invention aims to provide a method for providing battery energy to be charged and optimal energy setting information using the estimated battery status information and the collected environmental variable operation status information.

[0025] A battery management method considering environmental variables according to one embodiment of the present invention is characterized by including a battery status information collection step of collecting battery status information from a BMS (battery management system) of a battery, an environmental variable collection step of collecting environmental variables according to use of a product equipped with the battery, and an actual use management information provision step of providing battery management information according to actual use of the battery by reflecting the collected environmental variables in the collected battery status information.

[0026] In addition, the battery status information collection step collects battery status information including the SOC of the battery, and the battery is manufactured by OEM and mounted on the product, and the status information of the battery manufactured by OEM is provided through a third-party open API (application program interface) for the BMS of the battery provided by the manufacturer of the battery.

[0027] In addition, the environmental variable collection step further includes a product mounting status information collection step for collecting product mounting status information of a battery mounted on the product through a separate device mounted on the product, and the product mounting status information is characterized in that it is data including current, voltage, temperature, or a combination thereof measured by a separate device mounted on the product while the battery is mounted on the product.

[0028] In addition, the environmental variable collection step further includes a charging status information collection step for collecting charging status information of the battery measured while charging the battery from the charger when charging the battery mounted on the product through the charger, and the charging status information is characterized in that it is data including voltage, current, temperature, or a combination thereof measured while charging the battery with the charger.

[0029] In addition, the environmental variable collection step further includes a weather condition information collection step of collecting weather condition information including temperature information of the area where the product is located, and the actual use management information provision step is characterized in that it reflects the collected temperature information as the environmental variable in the collected battery condition information to provide battery management information according to actual use of the battery.

[0030] In addition, the method further includes a battery state information correction value estimation step of reflecting the weather condition information of the collected environmental variable to the collected battery state information to estimate a battery state information correction value, and a battery state information estimation step of applying the estimated battery state information correction value to the collected battery state information to estimate battery state information according to the practical use of the battery, and the battery state information correction value estimation step is characterized in that the battery state information correction value is estimated by inputting the collected battery state information and the weather condition information of the environmental variable into a DNN model for estimating the battery state information correction value, which is generated by learning learning data labeled with the battery state information correction value for each data set including the battery state information and the weather condition information of the environmental variable.

[0031] In addition, the method is characterized in that it further includes a driving status information collection step of collecting driving status information including current location information of the product, distance information to a destination, or a combination thereof through a separate device mounted on the product, a required SOC calculation step of calculating a required SOC for reaching a destination based on distance information to a destination of the collected driving status information, a charging battery energy calculation step of calculating battery energy to be charged based on the difference between the SOC of the estimated battery status information and the calculated required SOC when the SOC of the estimated battery status information is lower than the calculated required SOC, and an optimal energy setting information extraction step of extracting optimal energy setting information including the speed of the product, whether to control heating and cooling, or a combination thereof from an optimal energy setting information mapping table based on the SOC of the estimated battery status information and the distance information to the destination when the SOC of the estimated battery status information is lower than the calculated required SOC.

[0032] In addition, the battery management method is characterized by further including an alarm providing step for determining whether the battery has been misused and providing an alarm by using battery status information estimated by reflecting weather status information of the collected environmental variables to the collected environmental variables and the collected battery status information, and a battery stress index calculating step for calculating a battery stress index according to whether the battery has been misused.

[0033] In addition, the alarm is provided when the discharge current of the product exceeds a predetermined first discharge current threshold value, when the charging current during battery charging exceeds a predetermined first charging current threshold value, when the temperature information of the region where the product is located exceeds a predetermined first temperature threshold value, when the temperature information of the region is lower than a second temperature threshold value and the discharge current or charging current exceeds a second discharge current threshold value or a second charging current threshold value, or when the SOC of the estimated battery status information is lower than the first SOC threshold value or exceeds the second SOC threshold value, and the battery stress index is characterized in that it is calculated by adding a penalty score according to a type of misuse of the battery to a previously calculated battery stress index.

[0034] In addition, a battery management device considering environmental variables according to one embodiment of the present invention is characterized by including a memory storing a program code implementing a battery management method considering the environmental variables, and a processor configured to load and execute the program code stored in the memory.

[0035] As described above, the present invention has the effect of enabling more efficient management of the battery by estimating and providing more accurate status information by reflecting environmental variables according to actual use of the battery in the status information of the battery installed in the product.

[0036] In addition, the present invention has the effect of enabling efficient management of the battery by enabling normal use of the battery by calculating and providing an alarm according to battery misuse and a battery stress index.

[0037] In addition, the present invention has the effect of efficiently managing the battery and providing convenience to the user by providing battery energy to be charged and optimal energy setting information according to the operating status information of the product (electric vehicle).

[0038] FIG. 1 is a drawing illustrating a battery management method that takes into account environmental variables according to the use of a product equipped with a battery according to one embodiment of the present invention.

[0039] FIG. 2 is a flowchart illustrating a method for estimating and providing battery status information according to one embodiment of the present invention.

[0040] FIG. 3 is a diagram illustrating a DNN model for estimating a battery status information correction value according to one embodiment of the present invention.

[0041] FIG. 4 is a diagram illustrating a method for calculating and providing an alarm and a battery stress index due to battery misuse according to one embodiment of the present invention.

[0042] FIG. 5 is a diagram illustrating a method for providing battery energy to be supplied and optimal energy setting information according to one embodiment of the present invention.

[0043] FIG. 6 is a diagram illustrating an optimal energy setting information mapping table according to one embodiment of the present invention.

[0044] FIG. 7 is a diagram illustrating a DNN model for estimating battery status information according to one embodiment of the present invention.

[0045] FIG. 8 is a block diagram illustrating the configuration of a battery management device that takes into account environmental variables according to the use of a product equipped with a battery according to one embodiment of the present invention.

[0046] FIG. 9 is a flowchart illustrating a procedure for providing battery status information reflecting environmental variables according to one embodiment of the present invention.

[0047] FIG. 10 is a flowchart illustrating a procedure for providing an alarm and a battery stress index due to battery misuse according to one embodiment of the present invention.

[0048] FIG. 11 is a flowchart illustrating a procedure for providing charging battery energy and optimal energy setting information according to one embodiment of the present invention.

[0049] [Description of symbols] 100: Battery management device; 110: Battery status information collection unit; 120: Environmental variable collection unit; 121: Weather status information collection unit; 122: Product installation status information collection unit; 123: Charging status information collection unit; 124: Driving status information collection unit; 130: Battery status information correction value estimation unit; 140: Battery status information estimation unit; 150: Battery stress index calculation unit; 160: Required SOC calculation unit; 170: Rechargeable battery energy calculation unit; 180: Optimal energy setting information extraction unit; 190: Actual use management information provision unit; 191: Battery status information provision unit; 192: Misuse alarm provision unit; 193: Battery stress index provision unit; 194: Rechargeable battery energy provision unit; 195: Optimal energy setting information provision unit; 200: User terminal; 300: Product; 400: OEM server; 500: Weather condition information server; 600: Charger.

[0050] Hereinafter, with reference to the attached drawings, a preferred embodiment of a battery management method that takes into account environmental variables according to the use of a product equipped with a battery of the present invention will be described in detail. The same reference numerals presented in each drawing represent the same components. In addition, specific structural and functional descriptions of the embodiments of the present invention are merely illustrative for the purpose of explaining the embodiments according to the present invention, and unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning they have in the context of the related technology, and it is preferable not to interpret them in an ideal or excessively formal sense unless explicitly defined in this specification.

[0051] FIG. 1 is a drawing illustrating a battery management method that takes into account environmental variables according to the use of a product equipped with a battery according to one embodiment of the present invention.

[0052] As illustrated in FIG. 1, a battery management device (100) (hereinafter referred to as a battery management device) that considers environmental variables according to the use of a product equipped with a battery according to an embodiment of the present invention collects battery status information from an OEM server (400), and includes a charger (600), a separate device equipped in a product (300), a weather status information providing server (500), etc., and collects various environmental variables according to the actual use of the battery, and provides battery management information according to the actual use of the battery, including battery status information, to a user terminal (200) in consideration of the collected environmental variables, so that the battery can be efficiently managed according to the use of the product (300).

[0053] Here, the product (300) refers to various finished products (finished products equipped with batteries) made from batteries provided by an OEM (Original Equipment Manufacturer), such as electric vehicles and electric appliances. The present invention will be described in detail below using an electric vehicle as an example.

[0054] The above OEM provides an OEM server (400). The OEM server (400) is configured to provide battery status information, including SOC (State Of Charge), to a battery management device (100) through a third-party open API of a BMS (Battery Management System) for a battery manufactured by the OEM.

[0055] The above battery management device (100) collects environmental variables according to actual use of the battery of the electric vehicle (300) through a weather condition information providing server (500), a separate device (e.g., OBD, On Board Diagnostics) of the electric vehicle (200), a charger (600), or a combination thereof.

[0056] The above environmental variables are configured to include weather condition information collected through a weather condition information provision server (500), product installation status information for a battery collected through an OBD of an electric vehicle (200), operation status information according to the operation of an electric vehicle (300), and charging status information collected through a charger (600).

[0057] The above weather condition information providing server (500) provides weather condition information including temperature information of each region, and may be configured as a server operated by a government agency, such as the Korea Meteorological Administration server, or a public-private organization.

[0058] The above weather information is preferably comprised of local temperature information. However, the present invention is not limited to this and may be comprised of various other weather data, such as humidity information. Below, the weather information will be described as an example using local temperature information.

[0059] Meanwhile, the battery status information provided from the OEM server (400) through a third-party open API is configured to include the SOC. Here, the SOC is calculated from the battery management system (BMS) of the battery mounted in the electric vehicle (300) through the battery's internal voltage, current, temperature, or a combination thereof. However, the SOC is greatly affected by temperature.

[0060] For example, in winter, when temperatures are low, the measured external temperature of the vehicle in an indoor parking environment is significantly higher than the actual temperature outside the parking lot, so when the vehicle is moved from an indoor parking lot to an outdoor location, a rapid change in SOC may occur.

[0061] Accordingly, the battery management device (100) of the present invention collects environmental variables including weather condition information corresponding to location information according to the operation of an electric vehicle (300) collected through a weather condition information providing server (500), and reflects the weather condition information of the collected environmental variables into the battery condition information for the corresponding electric vehicle (300) collected through a third-party open API of an OEM server (400), thereby estimating an actual SOC according to the environmental variables and providing it as battery management information according to actual use. The estimation of the SOC will be described in detail with reference to FIG. 2.

[0062] The above electric vehicle (300) collects product installation status information including voltage, current, temperature (battery internal temperature) or a combination thereof measured through the OBD of the battery.

[0063] The product mounting status information of the above environmental variables can be collected to diagnose whether the battery is being misused during actual use. Furthermore, the product mounting status information can be collected to estimate battery status information, including SOC, SOP (State Of Power), SOH (State Of Health), RUL (Remaining Useful Life), or a combination thereof. Furthermore, the product mounting status information can be collected in advance to obtain training data for estimating the battery status information.

[0064] Here, SOC refers to the state of charge of the battery, SOP, SOH, and RUL refer to the state of life of the battery. SOP indicates how powerful the battery is, SOH indicates the performance of the battery, and RUL indicates the remaining cycles of the battery.

[0065] This battery status information can be estimated by the voltage, current, and internal temperature of the battery. However, since the battery status information varies depending on the temperature, the battery management device (100) of the present invention can precisely estimate and provide battery status information including the SOC, SOP, SOH, RUL, or a combination thereof through learning that adds local temperature information. At this time, when the battery status information including the SOC is not collected through a third-party open API, the SOC, SOP, SOH, RUL, or a combination thereof is estimated and provided to the user terminal (200), and when the battery status information including the SOC is collected, the SOP, SOH, RUL, or a combination thereof can be estimated and provided to the user terminal (200).

[0066] Additionally, the battery management device (100) can collect environmental variables including battery charging status information (charging status information) from the charger (600). The charging status information is composed of data including voltage, current, temperature, or a combination thereof measured during battery charging using the charger (600). The charger (600) is a charging tool configured to charge the product (300) using a predetermined charging protocol.

[0067] The above-mentioned state of charge information can be collected to diagnose battery misuse due to actual use (charging) of the battery. Furthermore, the state of charge information can be collected to estimate battery status information, including SOC, SOP, SOH, RUL, or a combination thereof. Furthermore, the state of charge information can be collected in advance to obtain training data for estimating the battery status information.

[0068] In addition, the battery management device (100) determines whether the battery is being misused by using the collected weather condition information, product mounting condition information, and environmental variables including the charging condition information, and the estimated SOC, and generates an alarm, and provides the generated alarm to the user terminal (200). In addition, the battery management device (100) calculates a battery stress index according to the misuse, and provides the calculated battery stress index to the user terminal (200). Through this, the user can recognize the battery misuse and the battery stress index according to the actual use of the battery, and efficiently manage the battery for long-term use.

[0069] Providing the above alarm and battery stress index is described in detail with reference to Fig. 4.

[0070] Additionally, the battery management device (100) collects environmental variables including driving status information including current location information of the electric vehicle (300), distance information to the destination, speed information, or a combination thereof, from the OBD (separate device) of the electric vehicle (300). The driving status information may be collected through a user terminal (300) in addition to the product (300) (i.e., separate device).

[0071] The above current location information can be measured through a GNSS receiver (not shown) equipped in the electric vehicle (300), distance information to the destination can be collected through linkage with a navigation system installed in the electric vehicle (300), and speed information can be measured through the speedometer of the electric vehicle.

[0072] In addition, the battery management device (100) uses environmental variables including driving status information and estimated SOC to provide battery energy to be charged to the destination and optimal energy setting information for the electric vehicle (300) as battery management information according to actual use to the user terminal (300), thereby enabling efficient battery management.

[0073] The battery energy to be charged to the above destination and the optimal energy setting information are described in detail with reference to FIG. 5.

[0074] Meanwhile, the user can install and run an application (App, Application) for battery management on the user terminal (200) to manage the battery, thereby linking with the battery management device (100) to receive battery management information according to actual battery usage, and can efficiently manage the battery through the battery management information.

[0075] In addition, the user must register identification information (such as the vehicle number of the electric vehicle) of a product such as an electric vehicle (300) in the battery management device (100) for battery management. At this time, a separate device (OBD), a charger (600), and an OEM server (400) are configured to provide each piece of information including the identification information to the battery management device (100).

[0076] FIG. 2 is a flowchart illustrating a method for estimating and providing battery status information according to one embodiment of the present invention.

[0077] As illustrated in FIG. 2, a battery management device (100) according to one embodiment of the present invention collects battery status information including the SOC of the battery.

[0078] Here, the SOC may be expressed in different terms for each product, for example, it may be expressed as the current battery level for the maximum battery capacity, in which case the current battery level may be interpreted as the current battery status information, i.e., SOC.

[0079] Additionally, the battery management device (100) collects environmental variables including driving status information from the OBD (i.e., product) of the electric vehicle (300) and weather status information from the weather status information providing server (500).

[0080] The battery management device (100) is configured to collect weather information for the area corresponding to the current location information included in the driving status information. The weather information includes temperature information for the area and can be collected through a weather information providing server (500), such as a weather service server.

[0081] In addition, the battery management device (100) estimates a correction value for the collected battery status information by reflecting the collected weather status information on the collected battery status information.

[0082] That is, the battery management device (100) estimates a correction value to correct the SOC by reflecting the regional temperature information of the collected weather condition information to the SOC of the collected battery condition information.

[0083] The correction value for the above battery status information is estimated using a DNN model for estimating the battery status information correction value. The battery management device (100) inputs the collected battery status information and the weather status information of the environmental variables into the DNN model for estimating the battery status information correction value to estimate the battery status information correction value.

[0084] The DNN model for estimating the above battery status information correction value is described in detail with reference to Fig. 3.

[0085] Additionally, the battery management device (100) estimates battery state information (SOC) by applying the estimated battery state information correction value to the collected battery state information.

[0086] For example, if the SOC of the collected battery status information is 50% and the SOC correction value of the estimated battery status information is ??5%, the battery management device (100) applies ??5% to the above 50% to ultimately estimate the SOC of the battery status information as 45%.

[0087] FIG. 3 is a diagram illustrating a DNN model for estimating a battery status information correction value according to one embodiment of the present invention.

[0088] The DNN model for estimating the above battery status information correction value can be generated in the battery management device (100) of the present invention, but can also be generated through a separate learning server (not shown).

[0089] The above learning server labels each data set containing battery status information (SOC) and environmental variables (regional weather conditions) with battery status information correction values, generating training data. Furthermore, the learning server uses each training data set to train a pre-prepared DNN (Deep Neural Network) to create a DNN model for estimating battery status information correction values. The weather conditions may be comprised of local temperature information.

[0090] That is, since the battery status information is greatly affected by environmental variables according to actual use (operation), the learning server is configured to train the DNN using learning data composed according to the correlation between the battery status information and environmental variables without reflecting the environmental variables.

[0091] The above DNN is configured to include an input layer including a plurality of input nodes, a hidden layer including a plurality of hidden nodes, and an output layer including an output node.

[0092] Each input node of the input layer and each hidden node of the hidden layer, and each hidden node of the hidden layer and each output node of the output layer are each connected through a link having a predetermined weight.

[0093] The above input layer receives battery status information and weather status information, which constitute learning data.

[0094] The output node of the above output layer is configured to output a learning result (correction value) according to the input, and since the learning server already knows the result (correction value) according to the input inputted to the input layer during the learning process, it updates (adjusts) the weights of the above link to reduce the error between the learning result outputted during the learning process and the actual correction value. The above weights refer to learning parameters, and the above learning is performed by updating the weights through the backpropagation method that backpropagates the error to the DNN to reduce the error.

[0095] At this point, the DNN, which has completed training by learning all training data, becomes the DNN model for estimating battery status information correction values. The inputs to this DNN model are the actual collected battery status information and environmental variables, and the output is the battery status information correction value.

[0096] FIG. 4 is a diagram illustrating a method for calculating and providing an alarm and a battery stress index due to battery misuse according to one embodiment of the present invention.

[0097] As illustrated in FIG. 4, a battery management device (100) according to one embodiment of the present invention collects battery status information through a third-party open API of an OEM server (400). In addition, the battery management device (100) collects environmental variables according to actual battery use, including weather status information, product mounting status information, and charging status information.

[0098] The above product mounting status information is collected through the OBD of the electric vehicle (300), and the charging status information can be collected through the charger (600).

[0099] Using the above-mentioned estimated battery status information and collected environmental variables, an alarm is generated to determine whether the battery is being misused (misused), and the generated alarm is provided to the user terminal (200) as battery management information according to actual use.

[0100] The above alarm is provided when the current (discharge current) of the battery included in the product mounting status information exceeds a predetermined first discharge current threshold value, when the current (charge current) of the charging status information exceeds the first charge current threshold value, when the local temperature information of the collected weather status information exceeds the first temperature information threshold value (50 degrees Celsius), when the local temperature information of the weather status information is lower than the second temperature threshold value (15 degrees Celsius) and the discharge current or charge current exceeds the second discharge current threshold value or the second charge current threshold value, and when the SOC of the estimated battery status information is lower than the first SOC threshold value (10%) (i.e., discharged to less than 10%) or exceeds the second SOC threshold value (90%) (charged to 90% or more).

[0101] Additionally, the battery management device (100) calculates a battery stress index according to battery misuse and provides it to the user terminal (200) as actual use battery management information.

[0102] The above battery stress index is calculated by adding the penalty points for battery misuse to the previously calculated battery stress index. The penalty points may vary depending on the type of battery misuse.

[0103] For example, if the SOC of the estimated battery state information exceeds the first SOC threshold, a penalty score of 2 can be given, and if the discharge current of the battery exceeds the first discharge current threshold, a penalty score of 1 can be given. The higher this battery stress score, the shorter the battery life is and the more deterioration has progressed.

[0104] FIG. 5 is a diagram illustrating a method for providing battery energy to be supplied and optimal energy setting information according to one embodiment of the present invention.

[0105] As illustrated in FIG. 5, a battery management device (100) according to one embodiment of the present invention collects battery status information via an OEM server (400). Furthermore, the battery management device (100) collects environmental variables including weather status information and driving status information based on actual battery usage. As described above, the weather status information may be collected via a weather status information provision server (500), and the driving status information may be collected from the OBD of an electric vehicle (300).

[0106] The above battery management device (100) calculates the SOC required to reach the destination based on the driver's driving habits and the distance to the destination information (i.e., the distance remaining to the destination information) of the driving status information.

[0107] In addition, when the SOC of the estimated battery status information is lower than the calculated required SOC, the battery management device (100) calculates the battery energy to be charged based on the difference between the SOC of the estimated battery status information and the calculated required SOC.

[0108] The above battery management device (100) can calculate the battery energy (kw / h) to be charged corresponding to the difference based on the battery energy corresponding to the unit SOC (e.g., 1%).

[0109] In addition, if the SOC of the estimated battery status information is lower than the calculated required SOC, the battery management device (100) extracts and provides optimal energy setting information including the speed of the electric vehicle (300), whether to control heating and cooling, or a combination thereof, from the optimal energy setting information mapping table according to the distance information to the destination.

[0110] The above optimal energy setting information mapping table maps setting information that allows the battery to be used for as long as possible while being used economically, and will be described in detail with reference to Fig. 6.

[0111] FIG. 6 is a diagram illustrating an optimal energy setting information mapping table according to one embodiment of the present invention.

[0112] As illustrated in FIG. 6, the optimal energy setting information mapping table according to one embodiment of the present invention is a mapping table that maps optimal energy setting information so that the battery of an electric vehicle (300) can be used for the longest possible time while operating economically.

[0113] The above optimal energy setting information mapping table is configured by mapping the distance information to the destination and the optimal energy setting information by SOC.

[0114] The above optimal energy setting information includes the speed of the electric vehicle (300), whether to control heating and cooling, including maintaining a specific temperature, or a combination thereof.

[0115] Therefore, if the estimated SOC is lower than the required SOC, the battery management device (100) extracts the distance information to the destination and the optimal energy setting information corresponding to the estimated SOC from the optimal energy setting information mapping table and provides the battery management information according to actual use to the user terminal (300).

[0116] FIG. 7 is a diagram illustrating a DNN model for estimating battery status information according to one embodiment of the present invention.

[0117] As illustrated in FIG. 7, a battery management device (100) according to an embodiment of the present invention may estimate battery status information including SOP, RUL, SOH, SOC, or a combination thereof using a DNN model for estimating battery status information (hereinafter, a DNN model for estimating battery status information) and provide the estimated battery status information to a user terminal (300) as battery management information according to actual use. In this case, if the SOC is estimated through estimation of a battery status information correction value, the SOC estimated through the DNN model for estimating battery status information may not be provided.

[0118] It is preferable that the DNN model for estimating the above battery status information be generated through a separate learning server (not shown). However, this is not limited to this and may be generated in the battery management device (100).

[0119] The above learning server labels each data set containing battery voltage, current, internal temperature, and environmental variables with battery status information, including SOP, RUL, SOH, SOC, or a combination thereof, to generate training data. Furthermore, the learning server trains a pre-prepared DNN (Deep Neural Network) using each training data set to create a DNN model for estimating battery status information.

[0120] That is, the learning server is configured to train the DNN using learning data configured based on the correlation between the battery voltage, current, internal temperature, and environmental variables of the weather status information and the battery status information.

[0121] The above DNN is configured to include an input layer including multiple input nodes, a hidden layer including multiple hidden nodes, and an output layer including output nodes. Since the above DNN is identical to the DNN described with reference to FIG. 3, a detailed description thereof will be omitted.

[0122] At this point, the DNN that has completed training by learning all the training data becomes the DNN model for estimating battery status information. The inputs of the DNN model for estimating battery status information are actual voltage, current, internal temperature, environmental variables, or a combination thereof, and the output is battery status information.

[0123] In addition, the battery management device (100) inputs product mounting status information into a DNN model for estimating battery status information when the battery is discharged, and inputs charging status information into a DNN model for estimating battery status information when the battery is charged, thereby estimating battery status information.

[0124] FIG. 8 is a block diagram illustrating the configuration of a battery management device that takes into account environmental variables according to the use of a product equipped with a battery according to one embodiment of the present invention.

[0125] As illustrated in FIG. 8, a battery management device (100) according to an embodiment of the present invention is configured to include a battery status information collection unit (110), an environmental variable collection unit (120), a battery status information correction value estimation unit (130), a battery status information estimation unit (140), a battery stress index calculation unit (150), a rechargeable battery energy calculation unit (160), an optimal energy setting information extraction unit (170), and an actual use management information provision unit (180).

[0126] The above battery status information collection unit (110) collects battery status information, including the SOC of the corresponding battery, through a third-party open API for the battery BMS. Ultimately, the battery status information collection unit (110) collects battery status information from the BMS of the corresponding battery through a third-party open API provided by the OEM server (400).

[0127] The above environmental variable collection unit (120) is intended to collect environmental variables according to actual use of the battery, including weather condition information, product installation condition information, charging condition information, operating condition information, or a combination thereof, and is configured to include a weather condition information collection unit (121), a product installation condition information collection unit (122), a charging condition information collection unit (123), and an operating condition information collection unit (124). Each piece of information has been described with reference to FIGS. 1 to 6, and thus will be omitted here.

[0128] The above battery status information correction value estimation unit (130) inputs the SOC of the collected battery status information and the local temperature information of the environmental variable into the DNN model for battery status information correction to estimate a correction value for the collected battery status information, and the above battery status information estimation unit (140) applies the estimated battery status information correction value to the collected battery status information to estimate battery status information reflecting the environmental variable.

[0129] Meanwhile, the battery status information estimation unit (140) can estimate battery status information including SOP, RUL, SOH, SOC or a combination thereof by inputting product mounting status information and weather status information, or charging status information and weather status information of environmental variables, into a DNN model for estimating battery status information.

[0130] The above battery stress index calculation unit (150) calculates a battery stress index according to battery misuse using each piece of collected information. The calculation of the battery stress index has been described with reference to FIG. 4, and therefore will be omitted here.

[0131] The above-mentioned required SOC calculation unit (160) calculates the required SOC to the destination based on the collected driving status information and the user's driving habits. The user's driving habits refer to the battery usage based on the driver's usual driving distance, and can be collected through the OBD of the electric vehicle (300) or the user terminal (200).

[0132] The above-mentioned charging battery energy calculation unit (170) calculates the battery energy that needs to be charged to the destination when the estimated SOC of the battery status information is lower than the required SOC, and the above-mentioned optimal energy setting information extraction unit (180) extracts the optimal energy setting information corresponding to the estimated SOC and the distance information to the destination from the optimal energy setting information mapping table when the estimated SOC is lower than the required SOC.

[0133] The above-mentioned actual use management information providing unit (190) is configured to include a battery status information providing unit (191), a misuse alarm providing unit (192), a battery stress index providing unit (193), a rechargeable battery energy providing unit (194), and an optimal energy setting information providing unit (195).

[0134] The above battery status information providing unit (191) provides the estimated battery status information to the user terminal (300).

[0135] The above misuse alarm provision unit (191) uses each piece of collected information to generate an alarm for battery misuse and provides it to the user terminal (300). The process of generating and providing the alarm has been described with reference to FIG. 4, and is therefore omitted here.

[0136] The battery stress index providing unit (193) provides the calculated battery stress index to the user terminal (200), the rechargeable battery energy providing unit (194) provides the calculated battery energy (amount) to be charged to the user terminal (200), and the optimal energy setting information providing unit (185) provides the extracted optimal energy setting information to the user terminal (200).

[0137] That is, the actual use management information provision unit (180) provides battery management information according to actual use of the battery to the user terminal (200) by considering the environmental variables collected through the environmental variable collection unit (120).

[0138] FIG. 9 is a flowchart illustrating a procedure for providing battery status information reflecting environmental variables according to one embodiment of the present invention.

[0139] As illustrated in FIG. 9, the procedure for providing battery status information reflecting environmental variables according to one embodiment of the present invention first includes a battery management device (100) performing a battery status information collection step (S110) of collecting battery status information and an environmental variable collection step of collecting environmental variables including operating status information (S120).

[0140] At this time, the environment variable collection step performs the operation status information collection step of collecting the operation status information through the OBD of the electric vehicle (300) in order to collect the environment variables including the operation status information.

[0141] Next, the environmental variable collection step performs a weather condition information collection step that collects regional weather condition information based on the current location information of the collected operating condition information (S130). The weather condition information collection step collects the regional weather condition information through a weather condition information provision server (500), and the weather condition information may be composed of temperature information of the regional area.

[0142] Next, the battery management device (100) performs a battery status information correction value estimation step of estimating a correction value to correct the battery status information by reflecting weather status information in the collected battery status information (S140).

[0143] As described above, the above battery status information correction value is estimated by inputting the collected battery status information and weather status variables into the DNN model for estimating the battery status information correction value.

[0144] Next, the battery management device (100) performs a battery status information estimation step of applying the estimated battery status information correction value to the collected battery status information to estimate battery status information according to actual use (S150) and performs a battery status information provision step of providing the estimated battery status information to the user terminal (200) (S160).

[0145] Meanwhile, in the battery status information estimation step, when product mounting status information or charging status information is received, the product mounting status information and weather status information or charging status information and weather status information are input into the DNN model for estimating battery status information, and battery status information including SOP, SOH, RUL, SOC, or a combination thereof is estimated and provided. However, in the case where the SOC is provided by correcting the collected SOC, the SOC estimated through the DNN model for estimating battery status information may be configured not to be provided.

[0146] FIG. 10 is a flowchart illustrating a procedure for providing an alarm and a battery stress index due to battery misuse according to one embodiment of the present invention.

[0147] As illustrated in FIG. 10, the procedure for providing an alarm and a battery stress index due to battery misuse according to one embodiment of the present invention first includes a battery management device (100) performing a battery status information collection step (S210) for collecting battery status information, and an environmental variable collection step for collecting operation status information, product mounting status information, and charging status information (S210).

[0148] That is, the environmental variable collection step is to collect operating status information according to actual use of the battery, a product mounting status information collection step to collect product mounting status information, and a charging status information collection step to collect charging status information.

[0149] Afterwards, the environmental variable collection step performs a weather condition information collection step to collect local weather condition information based on the current location information of the collected operating condition information (S230).

[0150] Next, the battery management device (100) performs a misuse judgment step to determine whether the battery is misused by using the estimated battery state information (SOC), the collected product mounting state information, the charging state information, and the weather state information reflecting the collected weather state information (S240).

[0151] As a result of determining whether the above misuse has occurred, if the battery has been misused (S240), an alarm generation step for generating an alarm due to misuse and a battery stress index calculation step for calculating a battery stress index are performed (S250).

[0152] The above alarm is generated according to the type of misuse, and the battery stress is also calculated according to the type of misuse, which has been explained with reference to Fig. 4, so it is omitted here.

[0153] FIG. 11 is a flowchart illustrating a procedure for providing charging battery energy and optimal energy setting information according to one embodiment of the present invention.

[0154] As illustrated in FIG. 11, a battery management device (100) according to one embodiment of the present invention performs a battery status information collection step (S310) of collecting battery status information, and performs an environmental variable collection step according to actual use of the battery.

[0155] The above environmental variable collection step is configured to include a driving status information collection step (S320) for collecting driving status information according to actual use of the battery, and a weather status information collection step (S330) for collecting weather status information of an area corresponding to the current location information of the collected driving status information.

[0156] Next, the battery management device (100) performs a required SOC calculation step of calculating the required SOC based on the distance information to the destination included in the collected driving status information (S340).

[0157] As described above, the required SOC is calculated based on the distance information to the destination and the driver's driving habits.

[0158] Next, the battery management device (100) performs a charging battery energy calculation step of calculating the battery energy to be charged using the estimated SOC and the required SOC when the calculated required SOC is higher than the estimated SOC (S340), and an optimal energy setting information extraction step of extracting optimal energy setting information according to the distance information to the destination and the estimated SOC (S360).

[0159] Calculating the battery energy to be charged and extracting optimal energy setting information are described with reference to Fig. 5, so they are omitted here.

[0160] Next, the battery management device (100) performs a step of providing a rechargeable battery energy that provides the calculated battery energy to be charged and a step of providing an optimal energy setting information that provides the extracted optimal energy setting information (S360).

[0161] In addition, a battery management device (100) according to one embodiment of the present invention is configured to include a memory that stores a program code that implements a battery management method that takes into account environmental variables according to actual use of a product equipped with a battery, as described with reference to FIGS. 9 to 11, and a processor configured to load and execute the program code stored in the memory.

[0162] As described above, the present invention has the effect of efficiently managing the battery in real time by providing battery management information by considering environmental variables according to actual use of a product equipped with a battery manufactured by OEM.

[0163] In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and various modifications can be implemented by a person having ordinary skill in the art to which the invention pertains without departing from the gist of the present invention claimed in the claims, and such modifications should not be understood individually from the technical idea or prospect of the present invention.

[0164] As described above, the present invention provides more accurate status information by reflecting environmental variables according to actual use of the battery in the status information of the battery installed in the product, thereby enabling more efficient management of the battery, and by calculating and providing an alarm according to battery misuse and a battery stress index, thereby enabling normal use of the battery, thereby enabling efficient management of the battery, and by providing battery energy to be charged and optimal energy setting information according to the operating status information of the product (electric vehicle), thereby enabling efficient management of the battery and providing convenience to the user, and thus having industrial applicability.

Claims

1. Battery status information collection step for collecting battery status information from the battery's BMS (battery management system); An environmental variable collection step for collecting environmental variables according to the use of a product equipped with the above battery; and A battery management method considering environmental variables, characterized by including an actual use management information providing step for providing battery management information according to actual use of the battery by reflecting the collected environmental variables in the status information of the collected battery.

2. In claim 1, The above battery status information collection step is: Collect battery status information including the SOC of the above battery, A battery management method considering environmental variables, characterized in that the above battery is manufactured as an OEM and installed in the product, and status information of the battery manufactured as an OEM is provided through a third-party open API (application program interface) for the BMS of the battery provided by the manufacturer of the battery.

3. In claim 1, The above environment variable collection step is: It further includes a product mounting status information collection step for collecting product mounting status information of a battery mounted on the product through a separate device mounted on the product; A battery management method considering environmental variables, characterized in that the product mounting status information is data including current, voltage, temperature, or a combination thereof measured by a separate device mounted on the product while the battery is mounted on the product.

4. In claim 1, The above environment variable collection step is: When charging the battery mounted on the product through a charger, a charging status information collection step for collecting charging status information of the battery measured while charging the battery from the charger is further included; A battery management method considering environmental variables, characterized in that the charging status information is data including voltage, current, temperature, or a combination thereof measured while charging the battery with the charger.

5. In claim 1, The above environment variable collection step is: It further includes a weather condition information collection step for collecting weather condition information including temperature information of the area where the product is located; The above step of providing real-use management information is: A battery management method considering environmental variables, characterized in that the collected temperature information is reflected as an environmental variable in the collected battery status information to provide battery management information according to actual use of the battery.

6. In claim 1, The above method, A battery status information correction value estimation step for estimating a battery status information correction value by reflecting the weather status information of the collected environmental variables to the collected battery status information; and It further includes a battery status information estimation step of applying the estimated battery status information correction value to the collected battery status information to estimate battery status information according to the practical use of the battery; The above battery status information correction value estimation step is: A battery management method considering environmental variables, characterized in that the battery status information correction value is estimated by inputting the collected battery status information and environmental variable weather status information into a DNN model for estimating the battery status information correction value, which is generated by learning training data labeled with battery status information correction values ​​for each data set including battery status information and environmental variable weather status information.

7. In claim 6, The above method, A driving status information collection step for collecting driving status information including the current location information of the product, distance information to the destination, or a combination thereof through a separate device mounted on the product; A required SOC calculation step for calculating the required SOC to reach the destination based on the distance information to the destination of the collected driving status information; A charging battery energy calculation step for calculating battery energy to be charged based on the difference between the SOC of the estimated battery status information and the calculated required SOC, when the SOC of the estimated battery status information is lower than the calculated required SOC; and A battery management method considering environmental variables, characterized in that it further includes an optimal energy setting information extraction step for extracting optimal energy setting information including the speed of the product, whether to control heating and cooling, or a combination thereof from an optimal energy setting information mapping table according to the SOC of the estimated battery status information and the distance information to the destination, when the SOC of the estimated battery status information is lower than the required SOC calculated above.

8. In claim 1, The above battery management method is, An alarm provision step for determining whether the battery is being misused and providing an alarm by using the battery status information estimated by reflecting the weather status information of the collected environmental variables to the collected environmental variables and the collected battery status information; and A battery management method considering environmental variables, characterized in that it further includes a battery stress index calculation step for calculating a battery stress index depending on whether the battery is misused.

9. In claim 8, The alarm is provided when the discharge current of the product exceeds a predetermined first discharge current threshold value, when the charging current during battery charging exceeds a predetermined first charging current threshold value, when the temperature information of the region where the product is located exceeds a predetermined first temperature threshold value, when the temperature information of the region is lower than a second temperature threshold value and the discharge current or charging current exceeds a second discharge current threshold value or a second charging current threshold value, or when the SOC of the estimated battery status information is lower than the first SOC threshold value or exceeds the second SOC threshold value. A battery management method considering environmental variables, characterized in that the above battery stress index is calculated by adding a penalty score according to the type of misuse of the battery to the previously calculated battery stress index.

10. A memory storing a program code implementing a battery management method considering the environmental variable according to any one of claims 1 to 9; and A battery management device considering environmental variables, characterized in that it comprises a processor configured to load and execute program code stored in the above memory.

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