Battery identification device and operating method therefor

Abstract

A battery identification device according to an embodiment disclosed in the present document may include: a communication circuit for acquiring charging data including a voltage value and a capacity of at least one battery; and a processor for extracting reference charging data in which the capacity corresponds to a reference capacity condition from the charging data, and identifying the battery on the basis of the reference charging data and a battery manufacturer identification condition.

Description

Battery identification device and method of operation thereof

[0001] Cross-citation with related applications

[0002] This invention claims the benefit of priority from Korean Patent Application No. 10-2023-0117244, filed September 4, 2023, the entire contents of which are incorporated herein by reference.

[0003] Technology field

[0004] Embodiments disclosed in this document relate to a battery identification device and an operating method thereof.

[0005] Recently, active research and development has been conducted on secondary batteries. The term "secondary battery" refers to a rechargeable battery, encompassing both conventional Ni / Cd and Ni / MH batteries, as well as more recent lithium-ion batteries. Among secondary batteries, lithium-ion batteries boast a significantly higher energy density than conventional Ni / Cd and Ni / MH batteries. Furthermore, lithium-ion batteries can be manufactured in a compact and lightweight form, making them a popular power source for mobile devices. Recently, their use has expanded to include power sources for electric vehicles, drawing attention as a next-generation energy storage medium.

[0006] There may be multiple manufacturers producing these secondary batteries. Depending on the manufacturer, the materials and manufacturing methods used to manufacture the batteries may differ, which can lead to differences in battery performance. Because battery packs in electric vehicles may contain battery cells produced by multiple manufacturers, it is necessary to accurately assess the condition or degree of deterioration of the battery pack, even when mixing battery cells from multiple manufacturers.

[0007] Typically, identifying a battery's manufacturer requires individually checking its serial number. However, when battery packs in electric vehicles contain battery cells produced by multiple manufacturers, verifying the serial number of each battery cell presents a practical challenge.

[0008] The technical problems of the embodiments disclosed in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the descriptions below.

[0009] A battery identification device according to one embodiment disclosed in this document may include a communication circuit for obtaining charging data including a voltage value and a capacity of one or more batteries; and a processor for extracting reference charging data, wherein the capacity corresponds to a reference capacity condition among the charging data, and identifying the battery based on the reference charging data and a battery manufacturer identification condition.

[0010] In one embodiment, the capacity may be the state of charge (SOC) of the battery, and the reference capacity condition may be a condition in which the SOC corresponds to the reference SOC.

[0011] In one embodiment, the processor can identify the battery based on whether a charge termination voltage value corresponding to the reference SOC included in the reference charge data is equal to or greater than a threshold value.

[0012] In one embodiment, the capacity may be a depth of discharge (DOD) of the battery, and the reference capacity condition may be a condition in which the DOD corresponds to a reference DOD.

[0013] In one embodiment, the charging data may include data regarding a change in the DOD according to the voltage value during the charging process of the battery, and the processor may generate voltage value-dQ / dV data based on the reference charging data, and identify the battery based on the voltage value-dQ / dV data and the battery manufacturer identification condition.

[0014] In one embodiment, the processor may identify the battery based on whether a dQ / dV peak value exists in a specified voltage range based on the voltage value-dQ / dV data.

[0015] In one embodiment, the charging data may include the voltage value and the capacity measured during the process of slow charging the battery.

[0016] An operating method of a battery identification device according to an embodiment disclosed in this document may include: an operation of acquiring charging data including a voltage value and a capacity of one or more batteries; an operation of extracting reference charging data, wherein the capacity corresponds to a reference capacity condition, from among the charging data; and an operation of identifying the battery based on the reference charging data and a battery manufacturer identification condition.

[0017] In one embodiment, the capacity may be the state of charge (SOC) of the battery, and the reference capacity condition may be a condition in which the SOC corresponds to the reference SOC.

[0018] In one embodiment, the identifying operation may identify the battery based on whether a charge termination voltage value corresponding to the reference SOC included in the reference charge data is equal to or greater than a threshold value.

[0019] In one embodiment, the capacity may be a depth of discharge (DOD) of the battery, and the reference capacity condition may be a condition in which the DOD corresponds to a reference DOD.

[0020] In one embodiment, the charging data may include data regarding a change in the DOD according to the voltage value during the charging process of the battery, and the identifying operation may generate voltage value-dQ / dV data based on the reference charging data, and identify the battery based on the voltage value-dQ / dV data and the battery manufacturer identification condition.

[0021] In one embodiment, the identifying operation may identify the battery based on whether a dQ / dV peak value exists in a voltage range specified based on the voltage value-dQ / dV data.

[0022] In one embodiment, the charging data may be data obtained during a process in which the battery is slowly charged.

[0023] The battery identification device and its operating method according to various embodiments disclosed in this document can identify the manufacturer of a battery using charging data including the voltage value and capacity of the battery.

[0024] Accordingly, the battery identification device and its operating method can reduce the time and cost of identifying the manufacturer of a battery.

[0025] The effects of the battery identification device and the operating method thereof according to the disclosure of this document are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art according to the disclosure of this document.

[0026] FIG. 1 illustrates a battery identification system according to one embodiment disclosed in this document.

[0027] FIG. 2 illustrates a block diagram of a battery identification device according to one embodiment disclosed in this document.

[0028] FIG. 3 illustrates a graph of temperature-charge termination voltage values ​​according to one embodiment disclosed in the present document.

[0029] FIG. 4 illustrates a graph of voltage values ​​- dQ / dV values ​​according to one embodiment disclosed in the present document.

[0030] FIGS. 5 to 7 are flowcharts showing an operation method of a battery identification device according to an embodiment disclosed in this document.

[0031] In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components.

[0032] Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that the present invention encompasses various modifications, equivalents, and / or alternatives of the embodiments.

[0033] The embodiments and terminology used in this document are not intended to limit the technical features described in this document to a specific embodiment, but should be understood to encompass various modifications, equivalents, or alternatives of the embodiment. In connection with the description of the drawings, similar reference numerals may be used to refer to similar or related components. The singular form of a noun corresponding to an item may include one or more of the item, unless the relevant context clearly indicates otherwise.

[0034] In this document, the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can each include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first", "second", "first", "second", "A", "B", "(a)", or "(b)" may be used merely to distinguish the corresponding component from other corresponding components, and do not limit the corresponding components in any other respect (e.g., importance or order) unless specifically stated otherwise.

[0035] In this document, when a component (e.g., a first component) is referred to as being “connected,” “coupled,” or “connected,” with or without the terms “functionally” or “communicatively,” or “coupled” or “connected,” it means that the component can be connected to the other component directly (e.g., wired or wirelessly), or indirectly (e.g., via a third component).

[0036] The methods according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory, CD-ROM), or may be distributed online (e.g., downloaded or uploaded) through an application store or directly between two user devices. In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0037] According to the embodiments disclosed in this document, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to the embodiments disclosed in this document, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to the embodiments disclosed in this document, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0038] FIG. 1 illustrates a battery identification system according to one embodiment disclosed in this document.

[0039] Referring to FIG. 1, the battery identification system may include a battery pack (10) and a battery identification device (12).

[0040] A battery pack (10) may include a plurality of battery units (101, 102, 103) and a BMS (100). Here, each of the battery units (101, 102, 103) may be a battery cell or a battery module. Hereinafter, it is assumed that each of the battery units (101, 102, 103) is a battery module included in the battery pack (10) and the battery module includes a plurality of battery cells.

[0041] The BMS (100) can obtain values ​​related to the status of battery cells or battery modules included in the battery pack (10). The BMS (100) can monitor, control, and manage the battery pack (10) based on the status values ​​of the battery cells or battery modules so that the battery cells or battery modules included in the battery pack (10) can maintain an optimal status. Here, the values ​​related to the status may represent one or more values ​​for temperature, voltage, current, resistance, state of charge (SOC), state of health (SOH), or a combination thereof of the battery cells or battery modules. Hereinafter, the values ​​related to the status may be referred to as 'status values'.

[0042] The battery pack (10) may be included in an electronic device. Here, the electronic device may be a mobile device (e.g., a mobile phone, a laptop computer, a smart phone, a smart pad), an electric vehicle (e.g., an electric vehicle (EV), a hybrid EV (HEV), a plug-in HEV (PHEV), a fuel cell EV (FCEV)), an energy storage system (ESS), or a battery swapping system (BSS).

[0043] Hereinafter, a battery pack (10), a battery module, or a battery cell will be collectively referred to as a battery. That is, the battery mentioned below may mean a battery cell, a battery module, or a battery pack (10).

[0044] The battery identification device (12) can acquire charging data including the voltage value and capacity of one or more batteries. Here, the battery capacity may refer to the battery's SOC or DOD. The charging data may include the battery's voltage value and capacity measured during the battery charging process.

[0045] The battery identification device (12) can extract reference charge data whose capacity corresponds to a reference capacity condition among the charge data. Here, the reference capacity condition may be a condition in which the SOC of the battery corresponds to the reference SOC or a condition in which the DOD of the battery corresponds to the reference DOD. For example, the reference charge data corresponding to the condition in which the SOC of the battery corresponds to the reference SOC may be charge data from among the plurality of charge data until the SOC of the battery reaches 96.5% during the process of charging the battery. The reference charge data corresponding to the condition in which the DOD of the battery corresponds to the reference DOD may be charge data measured from among the plurality of charge data during the process of charging the battery starting from a state in which the DOD of the battery is 85% or higher.

[0046] The battery identification device (12) can identify a battery based on reference charge data and battery manufacturer identification conditions. The battery identification device (12) can identify the manufacturer of the battery based on the reference charge data and the battery manufacturer identification conditions. Here, the battery manufacturer identification conditions refer to conditions that can only be observed in batteries manufactured by a specific battery manufacturer, and may be an indicator that can distinguish the manufacturer of the battery. The battery manufacturer identification conditions may include a charge termination voltage value of the battery. Here, the charge termination voltage value may be a voltage value when the SOC of the battery becomes the reference SOC during the process of charging the battery. For example, if the charge termination voltage value of first battery cells manufactured by a first manufacturer is about 4.18 V or higher, while the charge termination voltage value of second battery cells manufactured by a second manufacturer is less than about 4.178 V, the charge termination voltage value may be included in the battery manufacturer identification charging conditions.

[0047] In the above, only one battery pack (10) is illustrated in the battery identification system, but this is only for convenience of explanation, and the battery identification system may include a plurality of battery packs, and the battery identification device (12) may identify the manufacturer of each of the plurality of battery packs simultaneously / separately.

[0048] In addition, the above description assumes that the operations of the battery identification device (12) are performed outside the battery pack (10), such as in a server, cloud, charger, or charger / discharger, but the operations of the battery identification device (12) may also be performed by the BMS (100).

[0049] In one embodiment, when the operations of the battery identification device (12) are performed in a server, cloud, charger, or charger / discharger, the connection between the battery identification device (12) and the electronic device including the battery pack (10) may be a communication connection via a wired and / or wireless network. In one embodiment, the wired network may be based on a local area network (LAN) communication or a power line communication. In one embodiment, the wireless network may be based on a short-range communication network (e.g., Bluetooth, wireless fidelity (WiFi), or infrared data association (IrDA)), or a long-range communication network (cellular network, 4G network, 5G network). In one embodiment, the connection between the battery identification device (12) and the electronic device may be a connection via a device-to-device communication method (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

[0050] The battery identification device (12) can be connected to a user terminal (30) via wired and / or wireless means. Here, the user terminal (30) can be a mobile device (e.g., a mobile phone, a laptop computer, a smart phone, a smart pad), or a personal computer (PC). The battery identification device (12) can transmit and receive data with the user terminal (30) via wired and / or wireless communication channels. The battery identification device (12) can transmit the results of identifying the manufacturer of the battery to the user terminal (30).

[0051] FIG. 2 illustrates a block diagram of a battery identification device according to one embodiment disclosed in this document.

[0052] Referring to FIG. 2, the battery identification device (12) may include a memory (120), a communication circuit (122), and a processor (124). According to an embodiment, the battery identification device (12) illustrated in FIG. 2 may further include at least one component (e.g., a display, a sensor, an input device, or an output device) other than the components illustrated in FIG. 2. In one embodiment, when operations performed in the battery identification device (12) are performed in the BMS (100), the battery identification device (12) may further include a sensor that measures a state value of the battery.

[0053] The memory (120) may include volatile memory and / or non-volatile memory. In one embodiment, the memory (120) may include one or more software programs. In one embodiment, the memory (120) may store data used by at least one component (e.g., processor (124)) of the battery identification device (12). For example, the data may include software (or instructions related thereto), input data, or output data. In one embodiment, the instructions, when executed by the processor (124), may cause the battery identification device (12) to perform operations defined by the instructions.

[0054] The communication circuit (122) establishes a wired communication channel and / or a wireless communication channel between the electronic device including the battery identification device (12) and the battery pack (10), and can transmit and receive data with the electronic device through the established communication channel.

[0055] The communication circuit (122) can obtain charging data via wired and / or wireless communication channels. The communication circuit (122) can obtain battery charging data obtained by the BMS (100) via wired and / or wireless communication channels. Here, the charging data may include the voltage value and capacity of the battery. According to embodiments, the charging data may further include the temperature of the battery.

[0056] The processor (124) may extract reference charge data from among the charging data, wherein the battery capacity corresponds to the reference capacity condition. Here, the reference charge data may include values ​​corresponding to the battery manufacturer identification condition to identify the battery manufacturer. For example, the reference charge data may be charging data including the voltage value and SOC of the battery measured until the SOC of the battery reaches the reference SOC among the charging data.

[0057] In one embodiment, the processor (124) may extract reference charge data in which the SOC of the battery corresponds to the reference SOC among the charging data. The processor (124) may extract reference charge data obtained during a process of slow charging until the SOC of the battery becomes the reference SOC among the charging data. For example, the processor (124) may extract reference charge data including values ​​measured during a process of slow charging until the SOC of the battery becomes 96.5% among the charging data. Here, slow charging may be a method of charging the battery using alternating current (AC) electricity, and may include a case in which the charging current is about 15 to 17 A.

[0058] In one embodiment, the processor (124) may extract reference charge data in which the DOD of the battery corresponds to the reference DOD among the charging data. Here, the charging data may include data regarding changes in the DOD according to voltage values ​​measured during the charging process of the battery. The processor (124) may extract reference charge data including values ​​measured during the process of slowly charging the battery, starting from a state in which the DOD of the battery is equal to or greater than the reference DOD, among the charging data. For example, the processor (124) may extract reference charge data for a battery that is slowly charged when the DOD is equal to or greater than 85%, among the charging data acquired during the process of slowly charging the battery.

[0059] The processor (124) can identify the battery based on reference charge data and battery manufacturer identification charging conditions. The processor (124) can identify the manufacturer of the battery based on reference charge data and battery manufacturer identification conditions. Here, the battery manufacturer identification charging conditions can include the charging end voltage value of the battery for each battery manufacturer and the amount of change in dQ / dV according to the voltage value.

[0060] In one embodiment, the processor (124) may identify the battery based on a charge termination voltage value, which is a voltage value obtained when the SOC of the battery becomes a reference SOC. The processor (124) may identify the manufacturer of the battery based on whether the charge termination voltage value is equal to or greater than a threshold value.

[0061] In one embodiment, the communication circuit (122) may obtain charging data that further includes the temperature of the battery. The processor (124) may generate temperature-charge end voltage value data based on the reference charging data that further includes the temperature. The processor (124) may generate a temperature-charge end voltage value graph based on the charge end voltage value and temperature of the battery included in the reference charging data. The processor (124) may identify the battery based on whether the charge end voltage value according to a specified temperature or a specified temperature range is equal to or greater than a threshold value based on the temperature-charge end voltage value data. For example, the processor (124) may identify a battery having a charge end voltage value equal to or greater than a threshold value at a specified temperature as a battery manufactured by a first manufacturer, and may identify a battery having a charge end voltage value less than or equal to the threshold value as a battery manufactured by a second manufacturer. The reason why the relationship between the charge end voltage value and the temperature is further considered is that the charge end voltage value may vary depending on the temperature of the battery. Accordingly, the processor (124) can more accurately identify the manufacturer of the battery by identifying the battery based on the charge termination voltage value within a specified temperature or a specified temperature range.

[0062] In one embodiment, the processor (124) may identify the battery based on a charge termination voltage value, which is a voltage value obtained when the SOC of the battery becomes a reference SOC. The processor (124) may identify the manufacturer of the battery based on whether the charge termination voltage value is equal to or greater than a threshold value.

[0063] In one embodiment, the processor (124) can generate voltage value-dQ / dV data based on reference charge data in which the DOD of the battery corresponds to the reference DOD. The processor (124) can generate a voltage value-dQ / dV graph based on the voltage value of the battery included in the reference charge data. The processor (124) can identify the battery based on whether a dQ / dV peak value exists in a specified voltage range or at a specified voltage value based on the voltage value-dQ / dV data. For example, the processor (124) can identify a battery in which a dQ / dV peak value exists in a specified voltage range or at a specified voltage value as a battery manufactured by a first manufacturer, and can identify a battery in which a dQ / dV peak value does not exist in a specified voltage range or at a specified voltage value as a battery manufactured by a second manufacturer.

[0064] In one embodiment, the processor (124) may include a central processing unit, an application processor, a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor.

[0065] In one embodiment, the processor (124) may execute software to control at least one other component (e.g., hardware or software component) of the battery identification device (12) connected to the processor (124) and perform various data processing or calculations.

[0066] FIG. 3 illustrates a graph of temperature-charge termination voltage values ​​according to one embodiment disclosed in the present document.

[0067] Referring to FIG. 3, the graph may include a charge termination voltage value according to the temperature of the battery.

[0068] Referring to the graph, batteries manufactured by the first manufacturer and those manufactured by the second manufacturer can be distinguished based on a charge termination voltage of approximately 4.178 V. The reason for the different charge termination voltages by battery manufacturer is that even for batteries with the same capacity, each manufacturer's battery charging protocol may differ.

[0069] The processor (124) can generate a temperature-charge end voltage value graph based on the reference charge data. The processor (124) can identify the manufacturer of the battery based on whether the charge end voltage value is equal to or greater than a threshold value at a specified temperature or a specified temperature range based on the temperature-charge end voltage value graph. For example, the processor (124) can identify a battery having a charge end voltage value of about 4.178 V or greater at 20 degrees Celsius as a battery cell manufactured by a first manufacturer. The processor (124) can identify a battery having a charge end voltage value of less than about 4.178 V at 20 degrees Celsius as a battery manufactured by a second manufacturer.

[0070] FIG. 4 illustrates a graph of voltage values ​​- dQ / dV values ​​according to one embodiment disclosed in the present document.

[0071] Referring to FIG. 4, the graph may include dQ / dV values ​​according to the voltage value of the battery.

[0072] Referring to the graph, it can be confirmed that there is a battery cell in which the dQ / dV value corresponds to a peak value in the specified voltage range (400). For example, referring to the graph, when the specified voltage range (400) is between 4 V and 4.2 V, it can be confirmed that there is a battery cell in which the dQ / dV peak value exists in an area in which the dQ / dV value is between about 50 and 100. The reason why the existence of the dQ / dV peak value in the specified voltage range or specified voltage value differs depending on the battery manufacturer is because the composition of the active material of the positive electrode may differ depending on the manufacturer even for battery cells with the same capacity. For example, a battery manufactured using NCM 811 material may have a dQ / dV value formed as a peak value at about 4.1 V due to the characteristics of the NCM 811 material. Therefore, the battery identification device (12) can distinguish a battery manufactured using NCM 811 material among a plurality of batteries through the voltage value-dQ / dV graph.

[0073] The processor (124) can generate a voltage value-dQ / dV graph based on the reference charge data. The processor (124) can identify the manufacturer of the battery based on whether the dQ / dV value corresponds to a peak value in a specified voltage range or at a specified voltage value based on the voltage value-dQ / dV graph. For example, the processor (124) can identify a battery in which the dQ / dV value corresponds to a peak value between 4.1 V and 4.2 V as a battery manufactured by a first manufacturer. The processor (124) can identify a battery in which the dQ / dV value does not correspond to a peak value at 4.1 V as a battery manufactured by a second manufacturer.

[0074] FIG. 5 is a flowchart illustrating an operation method of a battery identification device according to an embodiment disclosed in this document.

[0075] Referring to FIG. 5, in operation 500, the battery identification device (12) can obtain charging data including voltage values ​​and capacities of one or more batteries.

[0076] In operation 502, the battery identification device (12) can extract reference charge data from among the charge data. The battery identification device (12) can extract reference charge data whose capacity corresponds to the reference capacity condition from among the charge data.

[0077] In operation 504, the battery identification device (12) can identify the battery based on the reference charge data and the battery manufacturer identification conditions. The battery identification device (12) can identify the manufacturer of the battery based on the reference charge data and the battery manufacturer identification conditions.

[0078] FIG. 6 is a flowchart illustrating an operation method of a battery identification device according to an embodiment disclosed in this document.

[0079] Referring to FIG. 6, in operation 600, the battery identification device (12) can obtain charging data including voltage values ​​and capacities of one or more batteries.

[0080] In operation 602, the battery identification device (12) can extract reference charge data in which the SOC of the battery corresponds to the reference SOC among the charging data. The battery identification device (12) can extract reference charge data obtained during the charging process until the SOC of the battery becomes the reference SOC among the charging data.

[0081] In operation 604, the battery identification device (12) can identify the manufacturer of the battery based on the reference charge data in which the SOC of the battery corresponds to the reference SOC. The battery identification device (12) can identify the manufacturer of the battery based on the charge termination voltage value, which is the voltage value when the SOC of the battery becomes the reference SOC. The battery identification device (12) can identify the manufacturer of the battery based on whether the charge termination voltage value is equal to or greater than a threshold value.

[0082] In one embodiment, the battery identification device (12) can obtain charging data that further includes the temperature of the battery. The battery identification device (12) can generate temperature-charge termination voltage value data based on the temperature and the charge termination voltage value. The battery identification device (12) can generate a temperature-charge termination voltage graph based on the charge termination voltage value and temperature of the battery included in the reference charge data.

[0083] In operation 606, the battery identification device (12) can identify a battery having a charge termination voltage value equal to or greater than a threshold value as a battery manufactured by the first manufacturer.

[0084] In one embodiment, the battery identification device (12) can identify a battery having a charge termination voltage equal to or greater than a threshold value at a specified temperature or a specified temperature range based on temperature-charge termination voltage value data as a battery manufactured by the first manufacturer.

[0085] In operation 608, the battery identification device (12) can identify a battery having a charge termination voltage value below a threshold value as a battery manufactured by a second manufacturer.

[0086] In one embodiment, the battery identification device (12) can identify a battery having a charge termination voltage value below a threshold value at a specified temperature or a specified temperature range based on temperature-charge termination voltage value data as a battery manufactured by a second manufacturer.

[0087] FIG. 7 is a flowchart illustrating an operation method of a battery identification device according to an embodiment disclosed in this document.

[0088] Referring to FIG. 7, in operation 700, the battery identification device (12) can obtain charging data including at least one of a voltage value and a capacity of one or more batteries.

[0089] In operation 702, the battery identification device (12) can extract reference charge data in which the DOD of the battery corresponds to the reference DOD among the charge data. The battery identification device (12) can extract reference charge data obtained while charging the battery in a state in which the DOD of the battery is equal to or greater than the reference DOD among the charge data.

[0090] In operation 704, the battery identification device (12) can generate voltage value-dQ / dV data based on reference charge data acquired during a charging process in which the DOD of the battery is greater than or equal to the reference DOD. The battery identification device (12) can generate a voltage value-dQ / dV graph based on the voltage value of the battery included in the reference charge data.

[0091] In operation 706, the battery identification device (12) can determine whether a dQ / dV peak value exists according to a specified voltage value based on the voltage value-dQ / dV data.

[0092] In operation 708, the battery identification device (12) can identify a battery having a dQ / dV value corresponding to a peak value in a specified voltage range or according to a specified voltage value based on voltage value-dQ / dV data as a battery manufactured by the first manufacturer.

[0093] In operation 710, the battery identification device (12) can identify a battery whose dQ / dV value according to a specified voltage range or a specified voltage value does not correspond to a peak value based on voltage value-dQ / dV data as a battery manufactured by a second manufacturer.

[0094] The terms "include," "comprise," or "have" used herein, unless otherwise specifically stated, imply that the corresponding component may be included, and therefore should be interpreted to include other components rather than to exclude other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiments disclosed in this document pertain, unless otherwise defined. Commonly used terms, such as terms defined in dictionaries, should be interpreted to be consistent with their contextual meaning in the relevant art, and shall not be interpreted in an idealized or overly formal sense, unless explicitly defined in this document.

[0095] The above description is merely an example of the technical idea disclosed in this document, and those skilled in the art to which the embodiments disclosed in this document pertain may make various modifications and variations without departing from the essential characteristics of the embodiments disclosed in this document. Therefore, the embodiments disclosed in this document are not intended to limit the technical idea of ​​the embodiments disclosed in this document, but to explain it, and the scope of the technical idea disclosed in this document is not limited by these embodiments. The scope of protection of the technical idea disclosed in this document should be interpreted by the claims below, and all technical ideas within a scope equivalent thereto should be interpreted as being included in the scope of rights of this document.

Claims

1. A communication circuit for obtaining charging data including voltage values ​​and capacities of one or more batteries; and Among the above charging data, the reference charging data whose capacity corresponds to the reference capacity condition is extracted, A processor that identifies the battery based on the above reference charge data and battery manufacturer identification conditions, Battery identification device.

2. In claim 1, The above capacity is the SOC (state of charge) of the battery, The above standard capacity condition is a condition in which the above SOC corresponds to the standard SOC. Battery identification device.

3. In claim 2, The above processor, Identifying the battery based on whether the charge termination voltage value, which is a voltage value corresponding to the reference SOC included in the reference charge data, is equal to or greater than a threshold value. Battery identification device.

4. In claim 1, The above capacity is the DOD (depth of discharge) of the battery, The above standard capacity condition is a condition in which the above DOD corresponds to the standard DOD. Battery identification device.

5. In claim 4, The above charging data includes data regarding changes in the DOD according to the voltage value during the process of charging the battery, The above processor, Generate voltage value-dQ / dV data based on the above reference charge data, Identifying the battery based on the voltage value-dQ / dV data and the battery manufacturer identification condition, Battery identification device.

6. In claim 5, The above processor, Identifying the battery based on whether a dQ / dV peak value exists in a specified voltage range based on the voltage value-dQ / dV data; Battery identification device.

7. In claim 1, The above charging data includes the voltage value and the capacity measured during the slow charging process of the battery. Battery identification device.

8. An operation of obtaining charging data including voltage values ​​and capacities of one or more batteries; An operation of extracting reference charging data whose capacity corresponds to a reference capacity condition among the above charging data; and Including an operation of identifying the battery based on the above reference charging data and battery manufacturer identification conditions, Method of operation of a battery identification device.

9. In claim 8, The above capacity is the SOC (state of charge) of the battery, The above standard capacity condition is a condition in which the above SOC corresponds to the standard SOC. Method of operation of a battery identification device.

10. In claim 9, The above identifying action is, Identifying the battery based on whether the charge termination voltage value, which is a voltage value corresponding to the reference SOC included in the reference charge data, is equal to or greater than a threshold value. Method of operation of a battery identification device.

11. In claim 8, The above capacity is the DOD (depth of discharge) of the battery, The above standard capacity condition is a condition in which the above DOD corresponds to the standard DOD. Method of operation of a battery identification device.

12. In claim 11, The above charging data includes data regarding changes in the DOD according to the voltage value during the process of charging the battery, The above identifying action is, Generate voltage value-dQ / dV data based on the above reference charge data, Identifying the battery based on the voltage value-dQ / dV data and the battery manufacturer identification condition, Method of operation of a battery identification device.

13. In claim 12, The above identifying action is, Identifying the battery based on whether a dQ / dV peak value exists in a specified voltage range based on the voltage value-dQ / dV data; Method of operation of a battery identification device.

14. In claim 8, The above charging data is data obtained during the process of slow charging the battery. Method of operation of a battery identification device.

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