Battery management program and battery management system

Abstract

A battery management program (P1) according to the present invention enables a processor (1) to implement a function of acquiring SOH information (S) based on battery monitoring data (X) of a battery (2), and a function of calculating an emission amount (Ea) of CO2, which is an environmental load factor related to the battery (2), on the basis of the acquired SOH information (S). A battery management system (100) is provided with: a battery management server (13) that acquires SOH information (S) based on battery monitoring data (X) of a battery (2); an emission amount calculation unit (121) that calculates the emission amount (Ea) of CO2 on the basis of the SOH information (S) acquired by the battery management server (13); and a CO2 emission amount information display unit (125) that displays emission amount information relating to the emission amount (Ea) calculated by the emission amount calculation unit (121).

Description

[0001] Cross - reference to related applications

[0002] This application claims priority to Japanese Application No. 2022 - 208198, filed on December 26, 2022, the entire content of which is incorporated herein by reference. Technical field

[0003] This disclosure relates to a technique for managing a battery. Background art

[0004] An information processing device for calculating the emissions of environmental load factors is disclosed in Patent Document 1 below. The information processing device includes: an accounting data storage unit that stores accounting data establishing a correspondence between information identifying an asset and the value of the asset; a coefficient storage unit that stores emission coefficients of environmental load substances for each asset; and an emissions calculation unit that multiplies the value corresponding to the asset by the emission coefficient for each asset to calculate the emissions of the environmental load substances for each asset. According to this information processing device, it is possible to easily calculate the emissions of environmental load factors based on the accounting data and the emission coefficients.

[0005] Patent Document 1: Japanese Patent No. 7043691

[0006] In recent years, with the increasing awareness of environmental issues and the like, there is a growing need to grasp the environmental impact of batteries used in vehicles such as electric vehicles and hybrid vehicles, as well as in consumer equipment and industrial equipment. It is known that such batteries emit greenhouse gases such as carbon dioxide, which is one of the environmental load factors, at each stage from their manufacture to use, repair, replacement, etc.

[0007] In the information processing device of Patent Document 1, the emissions of environmental load factors are calculated based on accounting data as fixed assets and emission coefficients. Therefore, there is a concern that the calculated emissions deviate from the actual emissions. Summary of the invention

[0008] This disclosure provides a battery management technique effective for accurately obtaining the emissions of environmental load factors related to a battery.

[0009] One aspect of this disclosure is a battery management program,

[0010] for causing a processor to implement the following functions: obtaining SOH information based on battery monitoring data of a battery; and calculating the emissions of environmental load factors related to the battery based on the obtained SOH information.

[0011] Another aspect of this disclosure is a battery management system, including:

[0012] The SOH information acquisition unit acquires SOH information based on battery monitoring data of a battery;

[0013] The emission calculation unit calculates the emissions of environmental load factors related to the battery based on the SOH information acquired by the SOH information acquisition unit; and

[0014] The display unit displays environmental load factor emission information related to the emissions calculated by the emission calculation unit.

[0015] According to each of the above methods, it is possible to provide a battery management technology effective for accurately obtaining the emissions of environmental load factors related to a battery.

[0016] In addition, the reference numerals in parentheses described in the claims indicate the correspondence with the specific units described in the embodiments described later, and do not limit the technical scope of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Through the following detailed description with reference to the drawings, the above object and other objects, features, and advantages of the present disclosure become more apparent. The drawings are:

[0018] Figure 1 It is a block diagram showing the configuration of a battery management system according to a first embodiment.

[0019] Figure 2 It is showing Figure 1 The flowchart of the control in the battery management unit in

[0020] Figure 3 It is showing Figure 1 The flowchart of the control in the battery management server in

[0021] Figure 4 It is showing Figure 1 An example of the display content in the display device in

[0022] Figure 5 It is a block diagram showing the configuration of a battery management system according to a second embodiment.

[0023] Figure 6 It is showing Figure 5 The flowchart of the control in the battery management unit in

[0024] Figure 7 It is showing Figure 5 The flowchart of the control in the battery management server in

[0025] Figure 8 It is a block diagram showing the configuration of a battery management system according to a third embodiment.

[0026] Figure 9 It is a block diagram showing the configuration of a battery management system including a display program. Detailed implementation

[0027] Hereinafter, the battery management technology related to the above method will be described in detail with reference to the accompanying drawings. Generally speaking, this battery management technology is a technology for calculating the emissions of environmental load factors related to the battery based on the actual data of the battery.

[0028] As an environmental load factor, there is a greenhouse gas. In this embodiment, as the battery management technology, a technology for calculating the emissions of carbon dioxide (hereinafter referred to as "CO2"), which is one of the greenhouse gases, will be described.

[0029] (First Embodiment)

[0030] As shown in Figure 1 , the battery management system 100 of the first embodiment is a system for managing the battery 2 that constitutes the storage battery mounted on a vehicle 10 such as an electric vehicle or a hybrid vehicle. However, the battery management system 100 can also monitor the battery 2 mounted on consumer equipment or industrial equipment other than the vehicle 10. The functions of the battery management system 100 are executed by the processor 1.

[0031] The "processor 1" mentioned here broadly includes processing devices in the components of a computer that are responsible for operations, conversions of data, execution of programs, control of other devices, etc. The processor 1 has a CPU (Central Processing Unit: central processing device) responsible for the overall control of the computer, or an MPU (Micro Processing unit: microprocessor) that integrates part of the functions of the CPU, etc.

[0032] The battery 2 has a battery pack formed by combining a plurality of battery cells. The battery cell is a secondary battery that can be repeatedly charged and used. The battery 2 and the battery management unit 11 together form a so-called "battery pack". In addition, the battery pack can be a replaceable (cartridge type) battery pack that can be detachably mounted on the vehicle 10, or a fixed battery pack that cannot be detached and is mounted on the vehicle 10.

[0033] The battery management system 100 includes a battery management unit 11, an in-vehicle communicator 12, a battery management server 13, and a display device 14.

[0034] 1. Configuration of the battery management unit 11

[0035] The battery management unit 11 is provided in the vehicle 10 as one of its components, and includes a battery monitoring data collection unit 111, a battery performance data acquisition unit 112, a battery load information calculation unit 113, an SOH calculation unit 114, an SOH correction unit 115, and an SOH information transmission unit 116. The functions of these components are executed by the first processor 1A. The first processor 1A is included in the processor 1 together with the second processor 1B, the third processor 1C, and the fourth processor 1D described later.

[0036] The battery monitoring data collection unit 111 has a function of collecting the battery monitoring data X of the battery 2. As the "battery monitoring data X" mentioned here, for example, time series data such as current and voltage can be used. The battery monitoring data collection unit 111 has sensors (such as a current sensor, a voltage sensor, and a temperature sensor) that can detect the battery monitoring data X to be collected.

[0037] The battery performance data acquisition unit 112 has a function of measuring the battery performance data Y of the battery 2. As the "battery performance data Y" mentioned here, for example, measurement data such as capacity, resistance, and AC impedance can be used. "Measurement" refers to the process for obtaining the measurement data. The time required to measure the battery performance data Y is longer than the time required to collect the battery monitoring data X. Therefore, in order to shorten the time, it is preferable to suppress the measurement frequency of the battery performance data Y as much as possible.

[0038] The battery load information calculation unit 113 has a function of calculating the battery load information A of the battery 2 based on the battery monitoring data X obtained by the battery performance data acquisition unit 112. That is, the battery load information A is information obtained from the battery monitoring data X. As the "battery load information A" mentioned here, for example, the usage history of the battery 2 shown by current, voltage, temperature, etc., and the usage history of the battery 2 shown by the SOC (State Of Charge) calculated based on these usage histories can be used.

[0039] The SOH calculation unit 114 has a function of calculating the SOH (State Of Health) of the battery 2 based on the battery load information A calculated by the battery load information calculation unit 113. The correspondence between the battery load information A and the SOH can be made in advance by machine learning using an evaluation measurement secondary battery, or made based on the actual measurement obtained by performing an accelerated degradation test using an evaluation measurement secondary battery, or made by using a model of the secondary battery and logically deriving a calculation formula for the correspondence. That is, this degradation model formula represents the correlation between the usage history of the battery 2 and the SOH.

[0040] The SOH correction unit 115 has a function of correcting the SOH calculated by the SOH calculation unit 114 based on the battery performance data Y obtained by the battery performance data acquisition unit 112 as needed. The correspondence between the battery performance data Y and the SOH is recorded in the SOH correction unit 115. The form of this correspondence is not particularly limited and can be in the form of a model, calculation formula, mapping diagram, chart, table, etc. The SOH correction unit 115 determines whether the SOH calculated by the deterioration model formula can be corrected, and when it is determined that correction is required, updates the SOH to the SOH calculated by the measurement model. With this function, by calculating and updating the SOH according to the measurement model, a higher-precision SOH can be obtained.

[0041] In addition, hereinafter, for convenience of explanation, the SOH before correction is set as "SOH_Sa", and the SOH after correction is set as "SOH_Sb". At this time, both SOH_Sa and SOH_Sb are SOH information S related to the SOH of the battery 2.

[0042] For example, it is possible to determine whether the SOH can be corrected based on whether the usage duration of the battery 2 exceeds a threshold value (for example, a value in units of months, years, etc.). In this case, it can be determined that correction is required on the condition that the usage duration of the battery 2 exceeds the threshold value. Or, for example, it is possible to compare SOH_Sa and SOH_Sb, and when the difference between SOH_Sa and SOH_Sb is above the threshold value, it is determined that SOH_Sa deviates from the actual value and needs to be corrected.

[0043] Here, a specific example of the calculation method of SOH_Sb based on the above measurement model will be described. When using the capacity as the measurement data, the full charge capacity can be calculated by dividing the interval capacity of the battery 2 by ΔSOC, and SOH_Sb can be estimated by dividing the full charge capacity by the initial capacity. The "ΔSOC" mentioned here represents the change width of the SOC (State Of Charge) of the battery 2, that is, the depth of charge and discharge. The correspondence between the battery performance data Y and the SOH can be made in advance by machine learning using an evaluation secondary battery, or made based on the measured values obtained by an accelerated degradation test using an evaluation secondary battery, or made by logically deriving the calculation formula of the correspondence using a model of the secondary battery.

[0044] The SOH information transmission unit 116 has a function of transmitting the SOH information S (SOH_Sa or SOH_Sb) to the in-vehicle communication device 12 side.

[0045] In addition, the battery management unit 11 may only have the first component group consisting of the battery monitoring data collection unit 111, the battery load information calculation unit 113, the SOH calculation unit 114, and the SOH information sending unit 116, or only have the second component group consisting of the battery performance data acquisition unit 112, the SOH correction unit 115, and the SOH information sending unit 116. The battery management unit 11 may also have both the first component group and the second component group.

[0046] 2. Configuration of the in-vehicle communication device 12

[0047] The in-vehicle communication device 12 is provided in the vehicle 10 and has a transmission / reception unit 117 as one of its components. The transmission / reception unit 117 has the function of receiving the data (SOH information S) from the SOH information sending unit 116 of the battery management unit 11 and sending it to the battery management server 13 side. The function of the transmission / reception unit 117 is executed by the second processor 1B mounted on the in-vehicle communication device 12.

[0048] 3. Configuration of the battery management server 13

[0049] The battery management server 13 includes an SOH information acquisition unit 118, an SOH information storage unit 119, an SOH change amount calculation unit 120, a CO2 emission amount calculation unit 121, a CO2 emission amount correction unit 122, a CO2 emission amount totalization unit 123, and a CO2 emission amount information output unit 124 as its components. The functions of these respective components are executed by the third processor 1C mounted on the battery management server 13.

[0050] The SOH information acquisition unit 118 has the function of acquiring the SOH information S via the transmission / reception unit 117. The SOH information storage unit 119 has the function of storing the SOH information S acquired by the SOH information acquisition unit 118. The SOH change amount calculation unit 120 has the function of reading out the SOH information S (SOH_Sa or SOH_Sb) from the SOH information storage unit 119 and calculating the SOH change amount Sc per unit period of the SOH. The "unit period" mentioned here is not particularly limited, and for example, units such as seconds, minutes, hours, days, weeks, months, and years can be used as the unit period.

[0051] Here, the SOH change amount Sc is the degree of degradation of the battery 2 per unit period, which is the same as SOH_Sa and SOH_Sb, and is the SOH information S related to the SOH of the battery 2. Therefore, in this method, the battery management server 13 has the function of an SOH information acquisition unit for acquiring the SOH information S. In this regard, the battery management server 13 can adopt various modification examples that implement at least the function of acquiring the SOH information S. For example, the SOH change amount Sc can be calculated by the battery management unit 11 and acquired by the battery management server 13.

[0052] The CO2 emission calculation unit 121 has the function of multiplying the SOH change amount Sc calculated by the SOH change amount calculation unit 120 by the CO2 emission coefficient to calculate the CO2 emission amount Ea. Here, the CO2 emission coefficient is also called the CO2 emission original unit, and refers to the total CO2 emission amount value per functional unit. By using the SOH change amount Sc, it is possible to calculate the CO2 emission amount Ea with good accuracy that independently takes into account the influence of the degradation state, individual differences, etc. of the battery 2.

[0053] When the CO2 emission amount during battery manufacturing is accurately proportionally allocated according to the SOH change amount Sc, for the CO2 emission coefficient related to battery manufacturing, the functional unit can be the battery capacity (Ah), power capacity (Wh, kWh), supply amount (yen, ten thousand yen), product weight (kg, ton), etc. Thus, it is possible to calculate the CO2 emission amount per unit battery capacity (kg-CO2 / Ah), the CO2 emission amount per unit power capacity (kg-CO2 / Wh, kg-CO2 / kWh), the CO2 emission amount per unit supply amount (kg-CO2 / yen, kg-CO2 / ten thousand yen), the CO2 emission amount per unit product weight (kg-CO2 / kg, kg-CO2 / ton), etc. At this time, it is preferable to independently set the CO2 emission coefficient according to the product name, product number, manufacturing company, manufacturing facility, production line, manufacturing batch, etc. of the battery 2. The total CO2 emission amount Ea can be calculated based on the SOH change amount Sc, the functional unit, and the CO2 emission coefficient. For example, the arithmetic expression of total CO2 emission amount (kg-CO2) = SOH change amount (%) × initial battery capacity (kWh) × CO2 emission coefficient (kg-CO2 / kWh) can be used. In addition, it is preferable that the CO2 emission coefficient is independently set according to the contribution degree of each situation (for example, during battery 2 manufacturing, circulation, use stage, after use, etc.) that is a factor for emitting CO2, or all situations including this are set as one.

[0054] When accurately allocating the CO2 emissions during battery circulation in proportion to the SOH change amount Sc, if the circulation distance from the battery manufacturing factory, battery sales store, and the manufacturing factory of electric vehicles to the sales store of electric vehicles can be obtained, then this circulation distance can be calculated as a functional unit. For example, the arithmetic expression of total CO2 emissions (kg-CO2) = SOH change amount (%) × circulation distance (km) × CO2 emission coefficient (kg-CO2 / km) can be used.

[0055] When accurately allocating the CO2 emissions during the recycling of used batteries in proportion to the SOH change amount Sc, if the circulation distance from the utilization site to the recycling / repair site can be obtained, then this circulation distance can be calculated as a functional unit. For example, the arithmetic expression of total CO2 emissions (kg-CO2) = SOH change amount (%) × circulation distance (km) × CO2 emission coefficient (kg-CO2 / km) can be used.

[0056] The above-mentioned CO2 emission coefficient can be obtained either from the battery manufacturing company or from industry organizations and third-party certification agencies. This CO2 emission coefficient can be obtained based on information such as the product name, product number, manufacturing company ID, and manufacturing company name of the product to be calculated.

[0057] The CO2 emissions correction unit 122 has the function of correcting the CO2 emissions Ea calculated by the CO2 emissions calculation unit 121 based on the correction result of the SOH by the SOH correction unit 115 as needed. According to this function, the corrected value of the CO2 emissions Ea, that is, the corrected emissions Eb, can be calculated. In this way, by using the corrected emissions Eb, the CO2 emissions Ea can be updated to a value with good accuracy.

[0058] The CO2 emissions summation unit 123 has the function of summing up the CO2 emissions Ea calculated by multiple CO2 emissions calculation units 121 and the CO2 emissions Eb calculated by the CO2 emissions correction unit 122 according to specified conditions (calculating the total emissions Ec). The "specified conditions" mentioned here refer to, for example, specified time units (second unit, minute unit, hour unit, day unit, week unit, month unit, year unit, etc.), specified reporting units (per vehicle, per institution, per enterprise, per shipper, etc.), etc. The total emissions Ec can be calculated, for example, according to either the time unit or the reporting unit, or according to both the time unit and the reporting unit. In addition, the specified conditions can be determined in advance or can be changed on the system.

[0059] The CO2 emission information output unit 124 has a function of outputting CO2 emission information related to the CO2 emissions. The "CO2 emission information" mentioned here refers to at least one of the CO2 emissions Ea calculated by the CO2 emissions calculation unit 121, the corrected emissions Eb calculated by the CO2 emissions correction unit 122, and the total emissions Ec calculated by the CO2 emissions totalization unit 123.

[0060] In addition, the battery management server 13 may also only include the third component group composed of the SOH information acquisition unit 118, the SOH information storage unit 119, the SOH change amount calculation unit 120, the CO2 emissions calculation unit 121, the CO2 emissions totalization unit 123, and the CO2 emission information output unit 124, or only include the fourth component group composed of the CO2 emissions correction unit 122, the CO2 emissions totalization unit 123, and the CO2 emission information output unit 124. The battery management server 13 may also include both the third component group and the fourth component group.

[0061] 4. Composition of the display device 14

[0062] The display device 14 is provided with a CO2 emission information display unit 25. The CO2 emission information display unit 125 has a function of receiving and displaying the CO2 emission information (environmental load factor emission information) output from the CO2 emission information output unit 124 of the battery management server 13. The function of the CO2 emission information display unit 125 is executed by the fourth processor 1D mounted on the display device 14. Typically, the display device 14 is provided in various devices such as a desktop or notebook personal computer (PC), a tablet terminal, and a mobile terminal.

[0063] By causing the processor 1 to execute the battery management program P1, the functions of the respective components of the above battery management system 100 are realized. Therefore, the battery management program P1 is a program for causing the processor 1 to realize the functions of the respective components. The battery management program P1 is stored in the non-transitory storage medium 20. The non-transitory storage medium 20 is separately shown in the drawings to avoid cumbersome description. However, the non-transitory storage medium 20 is included in the vehicle 10, the battery management server 13, and the display device 14. At least a part of the battery management program P1 is stored in the non-transitory storage medium 20 included in these respective components. As the non-transitory storage medium 20, various storage media such as a memory type, a disk type, and a tape type can be used. In addition, the battery management program P1 may also be stored in a cloud server. At least a part of the battery management program P1 can be downloaded from the cloud server to the vehicle 10, the battery management server 13, and the display device 14.

[0064] In addition, the distribution of the multiple components (functional elements) of the above battery management system 100 to the battery management unit 11, the in-vehicle communication device 12, the battery management server 13, and the display device 14 is not limited to Figure 1 the manner shown, and can be appropriately changed as needed. In addition, as the distribution destinations of the respective components (functional elements), other devices and facilities can also be used (for example, a battery charging stand for charging the battery 2, a battery replacement station for replacing the battery 2, a battery service center for repairing and replacing the battery 2, etc.).

[0065] 5. Control of the battery management system 100

[0066] Next, an explanation will be given of the control of the battery management system 100 with reference to Figures 1 to 3 the figures. The control flowchart in the battery management unit 11 of the battery management system 100 is shown in Figure 2 the figure, and the control flowchart in the battery management server 13 of the battery management system 100 is shown in Figure 3 the figure.

[0067] As Figure 2 shown, in the battery management unit 11 of this mode (refer to Figure 1 the figure), each step from step S101 to step S106 is executed in sequence. In addition, one or more steps can be added to these steps as needed, or multiple steps can be appropriately integrated.

[0068] Step S101 is a step of constantly collecting the above battery monitoring data X by the battery monitoring data collection unit 111. Step S102 is a step of calculating the above battery load information A by the battery load information calculation unit 113 based on the battery monitoring data X collected in step S101. Step S103 is a step of calculating the SOH_Sa of the battery 2 by the SOH calculation unit 114 based on the battery load information A calculated in step S102.

[0069] Step S104 is a step of determining whether to correct the SOH_Sa calculated in step S103. When it is determined in this step S104 that the SOH_Sa is to be corrected (in the case of "Yes" in step S104), the process proceeds to step S106 via step S105. On the other hand, when it is determined in this step S104 that the SOH_Sa is not to be corrected (in the case of "No" in step S104), step S105 is skipped and the process proceeds to step S106.

[0070] Step S105 is a step of correcting SOH_Sa based on the battery performance data Y obtained by the battery performance data acquisition unit 112 by the SOH correction unit 115. According to this step S105, SOH_Sa is updated to the corrected SOH_Sb. Step S106 is a step of sending the SOH information S (SOH_Sa or SOH_Sb) by the SOH information sending unit 116. The SOH information S is stored in the SOH information storage unit 119 via the transmission and reception unit 117 and the SOH information acquisition unit 118.

[0071] In addition, the process of calculating SOH_Sa based on the battery monitoring data X and the process of calculating SOH_Sb based on the battery performance data Y can be executed continuously or independently of each other.

[0072] Here, the advantage of correcting SOH_Sa in step S105 is as follows. That is, since SOH_Sa is calculated only based on the battery monitoring data X, there may be a case where a value that is calculated to deviate from the actual value may occur as the battery 2 is continuously used. On the other hand, the accuracy of the value of SOH_Sb calculated based on the battery performance data Y is high, but it takes time to acquire the data compared to the battery monitoring data X. Therefore, it is desirable to always calculate SOH_Sa only based on the battery monitoring data X and calculate SOH_Sb as needed to update SOH_Sa. Thereby, on the basis of suppressing the processing time required for deriving the SOH of the battery 2 as short as possible, the correct value of the SOH of the battery 2 can be derived.

[0073] As Figure 3 shown, in the battery management server 13 of this mode (refer to Figure 1 ), each step of step S111 to step S116 is sequentially executed. In addition, one or more steps can be added to these steps as needed, or multiple steps can be appropriately integrated.

[0074] Step S111 is a step of calculating the SOH change amount Sc per unit period based on a plurality of SOH information S stored in the SOH information storage unit 119 by the SOH change amount calculation unit 120. Step S112 is a step of calculating the CO2 emission amount Ea by multiplying the SOH change amount Sc calculated in step S111 by the above-mentioned CO2 emission coefficient by the SOH change amount calculation unit 120.

[0075] Step S113 is a step of determining whether to correct the CO2 emission amount Ea calculated in step S112. In this step S113, when it is determined to correct the CO2 emission amount Ea during the correction of SOH_Sa in the above step S105, otherwise it is determined not to correct the CO2 emission amount Ea. When it is determined to correct the CO2 emission amount Ea in this step S113 (in the case of "Yes" in step S113), it proceeds to step S115 via step S114. On the other hand, when it is determined not to correct the CO2 emission amount Ea in this step S113 (in the case of "No" in step S113), it skips step S114 and proceeds to step S115.

[0076] Step S114 is a step of correcting the CO2 emission amount Ea by the CO2 emission correction unit 122 using the SOH_Sb calculated in step S105. According to this step S114, the CO2 emission amount Ea is recalculated and updated to the CO2 emission amount Eb. Step S115 is a step of calculating the total emission amount Ec of either the CO2 emission amount Ea or the CO2 emission amount Eb by the CO2 emission total unit 123. According to this step S115, it is possible to appropriately total multiple CO2 emission amounts Ea and multiple CO2 emissions according to the specified period unit and reporting unit. Step S116 is a step of displaying the above-mentioned CO2 emission information output from the CO2 emission information output unit 124 by the CO2 emission information display unit 125. According to this step 116, it is possible to display the CO2 emission information (at least one of the CO2 emission amount Ea, the CO2 emission amount Eb, and the total emission amount Ec) on the CO2 emission information display unit 125 and notify the user.

[0077] Preferably, both the battery monitoring data X and the battery performance data Y of the battery 2 are used to calculate the CO2 emission information. Alternatively, it is also possible to calculate the CO2 emission using only either the battery monitoring data X or the battery performance data Y.

[0078] 6. Display content in the display device 14

[0079] Preferably, the above-mentioned SOH information associated with the CO2 emission information is displayed in a group with the CO2 emission information as needed on the display device 14. For example, the CO2 emission amount Eb and the SOH change amount Sc associated with the CO2 emission amount Eb are displayed simultaneously. Thus, the user can recognize the correlation between the deterioration degree of the battery 2 and the CO2 emission through visual information. In addition, it is also possible to determine the display method of the information related to the CO2 emission based on the SOH information.

[0080] Preferably, as Figure 4As shown in an example of the display content, the CO2 emissions and the amount of change in SOH (degree of deterioration) per unit period are displayed on the display device 14 in a manner that enables comparison based on the presence or absence of service utilization. In addition to this information, the effects brought about by service utilization can also be displayed on the display device 14 as the environmental compliance rate (%) and environmental points (pt) resulting from the reduction of CO2 emissions. Thus, the user can truly feel, in numerical form, the effect of reducing CO2 emissions through service utilization. The "service" mentioned here typically refers to the labor provided to the user to suppress the degree of deterioration of the battery 2 (for example, a charging program, a repair program, etc. that are effective in suppressing the degree of deterioration of the battery 2).

[0081] Alternatively, instead of the effects based on the presence or absence of service utilization, the effects based on the operating conditions of the user's own vehicle can be displayed on the display device 14. In this case, for example, in Figure 4 "No service utilization" can be changed to "not performing battery-friendly driving", and "service utilization" can be changed to "performing battery-friendly driving". The "battery-friendly driving" mentioned here refers to the driving performed by the user to suppress the degree of deterioration of the battery 2. Thus, the user can truly feel, in numerical form, the effect of reducing CO2 emissions through the implementation of battery-friendly driving.

[0082] Furthermore, the details of the CO2 emissions (for example, the proportion of CO2 emissions at each stage such as the manufacture, use, repair, and replacement of the battery 2, etc.) can also be additionally displayed on the display device 14.

[0083] According to the first embodiment, the following effects are achieved.

[0084] In the first embodiment, the SOH information calculated based on the battery monitoring data X of the battery 2 is used to calculate the CO2 emissions of the battery 2. Therefore, the CO2 emissions can be calculated as information reflecting the actual situation of the battery 2. Thus, compared with the case of calculating the CO2 emissions using fixed data, the CO2 emissions related to the battery 2 can be obtained with good accuracy.

[0085] Alternatively, when the SOH calculated based on the battery monitoring data X is corrected to the SOH calculated based on the battery performance data Y, a higher-accuracy SOH can be obtained.

[0086] Hereinafter, other embodiments related to the above-described first embodiment will be described with reference to the drawings. In other embodiments, the same reference numerals are assigned to the same elements as those in the above-described first embodiment, and the description of the same elements is omitted.

[0087] (Second Embodiment)

[0088] As Figure 5 shown, the configuration of the battery management system 100 of the second embodiment is different from that of the first embodiment with respect to the battery management unit 11 and the battery management server 13.

[0089] The battery management unit 11 of the second embodiment only has a battery monitoring data collection unit 111 and a battery performance data acquisition unit 112. That is, the battery management unit 11 of this embodiment only implements the sensing function of the battery monitoring data X and the battery performance data Y. In addition, in the battery management server 13 of the battery management system 200, compared with the battery management server of the first embodiment, the battery load information calculation unit 113, the SOH calculation unit 114, and the SOH correction unit 115 are moved from the battery management unit 11 side, and a battery information acquisition unit 118a is provided instead of the SOH information acquisition unit 118. The battery information acquisition unit 118a has the function of acquiring the battery information (battery monitoring data X and battery performance data Y) transmitted from the transmission and reception unit 117.

[0090] Other configurations are the same as those of the first embodiment.

[0091] Next, with reference to Figures 5 to 7 the control of the battery management system 100 of the second embodiment will be described. In Figure 6 FIG. shows the control flowchart in the battery management unit 11, and in Figure 7 FIG. shows the control flowchart in the battery management server 13.

[0092] As Figure 5 shown, in the battery management unit 11 of this embodiment (refer to Figure 5 ), the steps of step S201 to step S203 are sequentially executed. In addition, one or more steps may be added to these steps as needed, or multiple steps may be appropriately integrated.

[0093] Step S201 is the same as step S101 of the first embodiment (refer to Figure 2 ), and it is the step of collecting the above-mentioned battery monitoring data X by the battery monitoring data collection unit 111. Step S202 is the step of acquiring the above-mentioned battery performance data Y by the battery performance data acquisition unit 112. Step S203 is the step of transmitting the battery monitoring data X collected in step S201 and the battery performance data Y acquired in step S202 to the battery information acquisition unit 118a via the transmission and reception unit 117. At this time, the battery monitoring data X and the battery performance data Y may be transmitted independently, or may be transmitted together.

[0094] As Figure 6 shown, in the battery management server 13 of this embodiment (refer to Figure 5)In this case, the steps from step S211 to step S220 are executed in sequence. In addition, one or more steps can be added to these steps as needed, or multiple steps can be appropriately integrated.

[0095] Steps S211 to S214 are the same as steps S102 to S105 of the first embodiment (refer to Figure 2 ), step S215 is the same as step S111 of the first embodiment (refer to Figure 3 ). In addition, steps S216 to S220 are the same as steps S112 to S116 of the first embodiment (refer to Figure 3 ).

[0096] (Third Embodiment)

[0097] As Figure 8 shown, the battery management system 100 of the third embodiment is different from the second embodiment in that it further includes a battery charging stand 15. The battery charging stand 15 is provided with a transmitting and receiving unit 117a that is the same as the transmitting and receiving unit 117 of the in-vehicle communication device 12. This transmitting and receiving unit 117a realizes the function of receiving battery information from the transmitting and receiving unit 117 on the side of the in-vehicle communication device 12 and sending the battery information to the battery information acquisition unit 118a of the battery management server 13. That is, this transmitting and receiving unit 117a is configured to play a role of relaying the battery information sent from the in-vehicle communication device 12 to the battery management server 13. The function of this transmitting and receiving unit 117a is executed by a fifth processor 1E mounted on the battery charging stand 15. This fifth processor 1E is included in the processor 1.

[0098] In addition, part of the functions of the battery management unit 11, the in-vehicle communication device 12, the battery management server 13, and the display device 14 can also be part-time functions of the battery charging stand 15. In addition, the device or facility provided with the transmitting and receiving unit 117a can also be other than the battery charging stand 15. For example, instead of or in addition to the battery charging stand 15, the transmitting and receiving unit 117a can be provided at a battery replacement station or a battery service center.

[0099] Other configurations and controls are the same as those of the second embodiment.

[0100] According to the third embodiment, the battery information calculated by the battery management unit 11 can be sent to the battery management server 13 via the battery charging stand 15.

[0101] The present disclosure has been described based on the above-described embodiments, but it should be understood that the present disclosure is not limited to such embodiments and structures. The present disclosure also includes various modifications and modifications within the same scope. In addition, various combinations and modes, and even other combinations and modes including only one element, more or fewer elements, are included in the scope and thinking scope of the present disclosure. For example, the following modes applying the above-described respective modes can also be implemented.

[0102] In each of the above-described modes, the case of calculating the emission amount of CO2, which is one of the environmental load factors, is exemplified. However, instead of or in addition to the emission amount of CO2, the emission amounts of other environmental load factors different from CO2 can also be calculated. As the "other environmental load factors", for example, greenhouse gas (GHG) such as methane, nitrous oxide, alternative Freons (hydrofluorocarbons, perfluorocarbons, sulfur hexafluoride, nitrogen trifluoride, etc.), SO X (sulfur oxides), NO X (nitrogen oxides) and other air pollutants, other resource consumption loads, etc.

[0103] <Display Program>

[0104] In addition, the battery management program P1 in each of the above-described modes includes at least a part of the display program P10 described as a technical idea to be described later (refer to Figure 9 ). Alternatively, the display program P10 may be independent without being included in the battery management program P1 in each of the above-described modes. For convenience, the display program P10 is described independently of the battery management program P1 in the drawings. The display program P10 is recorded in the non-transitory storage medium 20 of at least one of the battery management unit 11, the battery management server 13, the display device 14, and the battery charging stand 15. The display program P10 displays information to the user on at least one of the CO2 emission amount information display unit 125 of the display device 14 and the display unit separately provided from the CO2 emission amount information display unit 125 in the display device 14.

[0105] In addition, the display program P10 may be downloaded from a cloud server or the like to a holding device 130 such as a desktop or notebook personal computer (PC), a tablet terminal, or a mobile terminal held by a user. Moreover, the display program P10 may display information to the user on the screen of the holding device 130. In such a mode, for example Figure 9 the display unit 131 shown corresponds to the screen of the holding device 130. In addition, the display program P10 may be stored in a cloud server.

[0106] [Technical Idea 1]

[0107] A display program (P10) for causing a processor (1) to implement a function of displaying the SOH information (S) of a battery (2) and information related to the emission amount (Ea) of an environmental load factor related to the battery on a display unit (131).

[0108] [Technical idea 2]

[0109] According to the display program described in Technical Idea 1, the processor is caused to implement a function of determining a display method of information related to the emission amount in the display unit based on the SOH information.

Claims

1. A battery management program (P1), wherein: it causes a processor (1) to perform the following functions: obtaining SOH information (S) based on battery monitoring data (X) of a battery (2); and calculating an emission amount (Ea) of an environmental load factor related to the battery based on the obtained SOH information.

2. The battery management program according to claim 1, wherein: it causes the processor (1) to perform the following function: calculating the emission amount based on an SOH change amount (Sc) per unit period of the SOH of the battery based on the SOH information and an emission coefficient of the environmental load factor.

3. The battery management program according to claim 1 or 2, wherein: it causes the processor (1) to perform the following functions: calculating the SOH (SOH_Sa) of the battery based on battery load information (A) obtained from the battery monitoring data; correcting the calculated SOH based on battery performance data (Y) of the battery; and obtaining the corrected SOH (SOH_Sb) as the SOH information.

4. The battery management program according to claim 1 or 2, wherein: it causes the processor (1) to perform a function of aggregating the emission amount based on at least one of a period unit and a reporting unit.

5. A battery management system (100), wherein, Comprising: an SOH information acquisition unit (13) that acquires SOH information (S) based on battery monitoring data (X) of a battery (2); an emission amount calculation unit (121) that calculates an emission amount (Ea) of an environmental load factor related to the battery based on the SOH information acquired by the SOH information acquisition unit; and a display unit (125) that displays environmental load factor emission amount information related to the emission amount calculated by the emission amount calculation unit.

6. The battery management system according to claim 5, wherein: it includes an SOH change amount calculation unit (120) that calculates an SOH change amount (Sc) per unit period of the SOH of the battery based on the SOH information, and the emission amount calculation unit calculates the emission amount based on the SOH change amount calculated by the SOH change amount calculation unit and the emission coefficient of the environmental load factor.

7. The battery management system according to claim 5 or 6, wherein, Comprising: an SOH calculation unit (114) that calculates the SOH (SOH_Sa) of the battery based on battery load information (A) obtained from the battery monitoring data; and an SOH correction unit (115) that corrects the SOH calculated by the SOH calculation unit based on battery performance data (Y) of the battery, and the SOH information acquisition unit acquires the SOH (SOH_Sb) corrected by the SOH correction unit as the SOH information.

8. The battery management system according to claim 5 or 6, wherein Comprising: an emission amount aggregation unit (123) that aggregates the emission amount calculated by the emission amount calculation unit based on at least one of a period unit and a reporting unit.

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