Method and electronic device for diagnosing dual battery pack

Abstract

An electronic device according to an embodiment of the present disclosure comprises: at least one measurement circuit connected to each terminal of a dual battery pack and a chassis of a vehicle; at least one sensor that measures a voltage of the at least one measurement circuit; a memory; and a processor, wherein the processor is configured to obtain a measurement parameter related to at least one insulation resistance of the dual battery pack on the basis of the voltage of the at least one measurement circuit, and diagnose a state of the dual battery pack on the basis of the measurement parameter, and the dual battery pack comprises: a first battery pack; a second battery pack having electrical characteristics that are different from those of the first battery pack; and a converter connected in series to the second battery pack, wherein the second battery pack and the converter may be connected in parallel to the first battery pack.

Description

Method for diagnosing dual battery packs and electronic devices

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0146097 dated October 23, 2024, and all contents disclosed in the document of said Korean Patent Application are incorporated herein as part of this specification.

[0002] The present disclosure relates to a method and an electronic device for diagnosing a dual battery pack, and specifically, to a method and device for diagnosing a dual battery pack having different electrical characteristics.

[0003] It can refer to a battery system configured in parallel by combining two battery packs with electrical characteristics through a DCDC converter.

[0004] Insulation resistance can be utilized to diagnose abnormalities in battery packs. However, since the negative electrodes of dual battery packs are connected to each other, measuring the insulation resistance of one pack is affected by the other. Therefore, abnormalities in dual battery packs cannot be diagnosed based on conventional insulation resistance measurement methods. Consequently, a new method is required to diagnose abnormalities in dual battery packs.

[0005] According to the disclosed embodiments, abnormalities in a dual battery pack can be diagnosed by utilizing measurement parameters based on insulation resistance.

[0006] The technical problems to be solved by the embodiments of the present disclosure are not limited to those described above, and other technical problems can be inferred from the following embodiments.

[0007] An electronic device according to one embodiment of the present disclosure comprises: at least one measurement circuit connected to each terminal of a dual battery pack and to the chassis of a vehicle; at least one sensor for measuring the voltage of the at least one measurement circuit; a memory; and a processor, wherein the processor is configured to obtain a measurement parameter related to at least one insulation resistance of the dual battery pack based on the voltage of the at least one measurement circuit and to diagnose the state of the dual battery pack based on the measurement parameter, and the dual battery pack comprises a first battery pack; a second battery pack having electrical characteristics different from those of the first battery pack; and a converter connected in series to the second battery pack, wherein the second battery pack and the converter may be connected in parallel with the first battery pack.

[0008] In an electronic device according to one embodiment of the present disclosure, at least one insulation resistance may include: a first insulation resistance between the (+) terminal of a first battery pack and the chassis; a second insulation resistance between the (+) terminal of a second battery pack and the chassis; and a third insulation resistance between the (-) terminal of a first battery pack and the chassis.

[0009] In an electronic device according to one embodiment of the present disclosure, at least one measuring circuit may include: a first measuring circuit connected in parallel to a first insulation resistance; a second measuring circuit connected in parallel to a second insulation resistance; and a third measuring circuit connected in parallel to a third insulation resistance.

[0010] In an electronic device according to one embodiment of the present disclosure, each of at least one measurement circuit may include at least one of at least one reference resistor, a reference power source, and a switch.

[0011] In an electronic device according to one embodiment of the present disclosure, the measurement parameter may be expressed as a first function relating to a first insulation resistance, a second insulation resistance, and a third insulation resistance, or a second function relating to a supply voltage of a first battery pack, a supply voltage of a second battery pack, and a voltage of at least one measurement circuit.

[0012] An electronic device according to one embodiment of the present disclosure may be configured such that a processor determines a reference value for a measurement parameter by inputting a first reference resistance regarding a first insulation resistance, a second reference resistance regarding a second insulation resistance, and a third reference resistance regarding a third insulation resistance into a first function.

[0013] In an electronic device according to one embodiment of the present disclosure, the processor may be configured to calculate a measurement value regarding a measurement parameter by inputting the supply voltage of a first battery pack, the supply voltage of a second battery pack, and the voltage of at least one measurement circuit into a second function, and to diagnose the state of a dual battery pack based on a reference value and a measurement value.

[0014] In an electronic device according to one embodiment of the present disclosure, the processor may be configured to determine that an abnormality regarding insulation resistance has occurred in the dual battery pack when the measured value is less than a reference value, and to determine that an abnormality regarding insulation resistance has not occurred in the dual battery pack when the measured value is greater than or equal to the reference value.

[0015] In an electronic device according to one embodiment of the present disclosure, the converter may be a DC-DC converter that converts the magnitude of the supply voltage of a second battery pack to be equal to the magnitude of the supply voltage of a first battery pack.

[0016] A dual battery pack diagnostic method performed by an electronic device according to one embodiment of the present disclosure may include: a step of obtaining a measurement parameter related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit; and a step of diagnosing the state of the dual battery pack based on the measurement parameter, wherein the dual battery pack comprises a first battery pack; a second battery pack having electrical characteristics different from those of the first battery pack; and a converter connected in series to the second battery pack, and the second battery pack and the converter may be connected in parallel with the first battery pack.

[0017] In one embodiment of the present disclosure, a computer-readable, non-transient computer-readable storage medium storing a program for executing on a computer a method for diagnosing a dual battery pack, wherein the dual battery pack diagnosing method comprises: a step of obtaining a measurement parameter related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit; and a step of diagnosing the state of the dual battery pack based on the measurement parameter, wherein the dual battery pack comprises a first battery pack; a second battery pack having electrical characteristics different from those of the first battery pack; and a converter connected in series to the second battery pack, and the second battery pack and the converter may be connected in parallel with the first battery pack.

[0018] According to the embodiments disclosed in this document, it is possible to diagnose whether a dual battery pack is abnormal without directly measuring the insulation resistance value for each battery pack of the dual battery pack.

[0019] The effects of the invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description in the claims.

[0020] FIG. 1 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0021] FIG. 2 is a diagram illustrating a circuit model for dual battery pack diagnosis according to one embodiment of the present disclosure.

[0022] FIG. 3 is a drawing for explaining a measurement circuit inside an electronic device according to one embodiment of the present disclosure.

[0023] FIG. 4 is a diagram showing a Thevenin equivalent circuit when the first switch is closed according to one embodiment of the present disclosure.

[0024] FIG. 5 is a diagram showing a Thevenin equivalent circuit when the second switch is closed according to one embodiment of the present disclosure.

[0025] FIG. 6 is a diagram showing a Thevenin equivalent circuit when a third switch is closed according to one embodiment of the present disclosure.

[0026] FIG. 7 is a flowchart of the operation of an electronic device according to a representative embodiment of the present disclosure.

[0027] FIG. 8 is a flowchart of the operation of an electronic device according to one embodiment of the present disclosure.

[0028] In describing the embodiments, technical details that are well known in the art to which this disclosure belongs and are not directly related to this disclosure are omitted. This is intended to convey the essence of this disclosure more clearly without obscuring it by omitting unnecessary explanations.

[0029] For the same reason, some components in the attached drawings have been exaggerated, omitted, or schematically depicted. Additionally, the size of each component does not entirely reflect its actual dimensions. Identical or corresponding components in each drawing have been assigned the same reference numbers.

[0030] The advantages and features of the present disclosure and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure is complete and to fully inform those skilled in the art of the scope of the invention, and the present disclosure is defined only by the scope of the claims. Throughout the specification, like reference numerals refer to like components.

[0031] At this time, it will be understood that each block of the process flow diagrams and combinations of the flow diagrams can be executed by computer program instructions. Since these computer program instructions can be loaded into the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing equipment, the instructions executed through the processor of the computer or other programmable data processing equipment create means for performing the functions described in the flow diagram block(s). Since these computer program instructions can also be stored in computer-available or computer-readable memory that can be directed toward the computer or other programmable data processing equipment to implement functions in a specific way, the instructions stored in such computer-available or computer-readable memory can also produce a manufactured item containing means of instruction for performing the functions described in the flow diagram block(s). Since computer program instructions can also be loaded onto a computer or other programmable data processing equipment, the instructions that execute the computer or other programmable data processing equipment by creating a process that is executed by a computer through a series of operation steps performed on the computer or other programmable data processing equipment can also provide steps for executing the functions described in the flow diagram block(s).

[0032] Additionally, each block may represent a module, segment, or part of code containing one or more executable instructions for executing a specified logical function(s). Also, it should be noted that in some alternative embodiments, the functions mentioned in the blocks may occur out of order. For example, two blocks shown in succession may actually be executed substantially simultaneously, or the blocks may be executed in reverse order according to the corresponding function.

[0033] In this embodiment, the term "part" refers to a software or hardware component, such as an FPGA or ASIC, and the "part" performs certain roles. However, the meaning of "part" is not limited to software or hardware. The "part" may be configured to reside in an addressable storage medium or configured to operate one or more processors. Thus, for example, the "part" includes components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, procedures, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. The functions provided within the components and "parts" may be combined into a smaller number of components and "parts" or further separated into additional components and "parts." Furthermore, the components and "parts" may be implemented to operate one or more CPUs within a device or secure multimedia card.

[0034] The expression “at least one of a, b, and c” described throughout the specification may include ‘a alone’, ‘b alone’, ‘c alone’, ‘a and b’, ‘a and c’, ‘b and c’, or ‘a, b, and c all’.

[0035] The "terminal" mentioned below may be implemented as a computer or portable terminal capable of connecting to a server or other terminal via a network. Here, the computer includes, for example, a notebook, desktop, or laptop equipped with a web browser, and the portable terminal is a wireless communication device that ensures portability and mobility, and may include all types of handheld-based wireless communication devices such as IMT (International Mobile Telecommunication), CDMA (Code Division Multiple Access), W-CDMA (W-Code Division Multiple Access), LTE (Long Term Evolution), communication-based terminals, smartphones, tablet PCs, etc.

[0036] Embodiments of the present disclosure are described below with reference to the attached drawings so that those skilled in the art can easily implement them. However, the present disclosure may be embodied in various different forms and is not limited to the embodiments described herein.

[0037] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the attached drawings.

[0038] FIG. 1 is a block diagram of an electronic device according to one embodiment of the present disclosure.

[0039] Referring to FIG. 1, the electronic device (100) may include a measurement circuit (110), a sensor (120), a memory (130), and a processor (140). According to an embodiment, the electronic device (100) illustrated in FIG. 1 may further include at least one component (e.g., a communication interface) in addition to the components illustrated in FIG. 1.

[0040] According to one embodiment, the measurement circuit (110) may be a circuit for measuring the insulation resistance of at least one of the dual battery packs. The measurement circuit (110) may be wired to at least one terminal of each battery pack constituting the dual battery pack. The measurement circuit (110) may be connected to each terminal of the dual battery pack and to the chassis of the vehicle. The measurement circuit (110) may be a plurality of (e.g., three measurement circuits).

[0041] According to one embodiment, the sensor (120) may include a voltage sensor for measuring voltage. The sensor (120) may measure the voltage of at least one measurement circuit (110). In addition to voltage, the sensor (120) may include a current sensor for measuring current.

[0042] According to one embodiment, the memory (130) may include volatile memory and / or non-volatile memory. According to one embodiment, the memory (130) may store data used by at least one component of the electronic device (100) (e.g., processor (140)). For example, the data may include software (or, related instructions), input data, or output data. In one embodiment, the instructions may cause the electronic device (100) to perform operations defined by the instructions when executed by the processor (140).

[0043] According to one embodiment, the processor (140) may be implemented as a computer or a similar device according to hardware, software, or a combination thereof. In hardware, the processor (140) may be implemented in the form of an electronic circuit that processes electrical signals to perform control functions, and in software, it may be implemented in the form of a program that drives the hardware processor (140). According to one embodiment, the processor (140) may be operatively connected to a component included in the electronic device (100) (e.g., a measurement circuit (110), a sensor (120), and / or a memory (130)) to control the connected component.

[0044] According to one embodiment, the processor (140) 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.

[0045] Meanwhile, unless otherwise specifically mentioned in the following description, the operation of the electronic device (100) may be interpreted as being performed under the control of the processor (140).

[0046] According to one embodiment, the processor (140) can obtain measurement parameters related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit (110) measured using the sensor (120). The processor (140) can diagnose the state of the dual battery pack based on the measurement parameters. Here, the dual battery pack may include a first battery pack, a second battery pack having electrical characteristics different from those of the first battery pack, and a converter connected in series to the second battery pack, and the second battery pack and the converter may be connected in parallel with the first battery pack.

[0047] According to one embodiment, at least one insulation resistance may include a first insulation resistance between the (+) terminal of a first battery pack and the chassis; a second insulation resistance between the (+) terminal of a second battery pack and the chassis; and a third insulation resistance between the (-) terminal of a first battery pack and the chassis.

[0048] According to one embodiment, at least one measuring circuit (110) may include a first measuring circuit (111) connected in parallel to a first insulation resistance; a second measuring circuit (113) connected in parallel to a second insulation resistance; and a third measuring circuit (115) connected in parallel to a third insulation resistance.

[0049] According to one embodiment, each of at least one measurement circuit (110) may include at least one of at least one reference resistor, a reference power source, and a switch.

[0050] According to one embodiment, the measurement parameter may be expressed as a first function relating to a first insulation resistance, a second insulation resistance, and a third insulation resistance, or a second function relating to a supply voltage of a first battery pack, a supply voltage of a second battery pack, and a voltage of at least one measurement circuit (110).

[0051] According to one embodiment, the processor (140) can determine a reference value for a measurement parameter by inputting a first reference resistance regarding a first insulation resistance, a second reference resistance regarding a second insulation resistance, and a third reference resistance regarding a third insulation resistance into a first function.

[0052] According to one embodiment, the processor (140) can calculate a measurement value regarding a measurement parameter by inputting the supply voltage of the first battery pack, the supply voltage of the second battery pack, and the voltage of at least one measurement circuit (110) into a second function, and diagnose the state of the dual battery pack based on the reference value and the measurement value.

[0053] According to one embodiment, the processor (140) may determine that an abnormality regarding insulation resistance has occurred in the dual battery pack if the measured value is less than a reference value, and determine that an abnormality regarding insulation resistance has not occurred in the dual battery pack if the measured value is greater than or equal to the reference value.

[0054] According to one embodiment, the converter may be a DC-DC converter that converts the magnitude of the supply voltage of the second battery pack to be equal to the magnitude of the supply voltage of the first battery pack.

[0055] FIG. 2 is a diagram illustrating a circuit model for diagnosing a dual battery pack according to an embodiment of the present disclosure. Descriptions that overlap with the foregoing may be omitted and may be explained using the configurations of FIG. 1.

[0056] Referring to FIG. 2, a circuit model for diagnosing a dual battery pack may include resistors (211, 221, and 231) connected between each terminal of the dual battery pack and the chassis (240) of the vehicle, and measurement circuits (111, 113, and 115) connected in parallel with each resistor (211, 221, and 231). The aforementioned resistors (211, 221, and 231) are insulation resistors of the dual battery pack and may represent the resistance of the path through which leakage current leaks from the dual battery pack through the insulation to the outside of the dual battery pack (e.g., the chassis of the vehicle). The leakage current of the dual battery pack can be identified through the resistors (211, 221, and 231). A first battery pack (210) and a second battery pack (220) having different potentials may be connected via a DC-DC converter.

[0057] The first resistance (211) is the insulation resistance between the (+) terminal of the first battery pack (210) and the chassis of the vehicle, the second resistance (221) is the insulation resistance between the (+) terminal of the second battery pack (220) and the chassis of the vehicle, and the third resistance (231) may mean the insulation resistance between the (-) terminal of the first battery pack (210) and the chassis of the vehicle.

[0058] Insulation resistance can indicate the extent to which minute current leaks through an insulator in an electrical system. Ideally, no current should flow through an insulator, but since perfect insulators do not exist, leakage current can flow through them. In this case, insulation resistance can be used in the modeling process to numerically represent this leakage current.

[0059] FIG. 3 is a drawing for explaining a measurement circuit inside an electronic device according to one embodiment of the present disclosure. Descriptions that overlap with the foregoing may be omitted and may be explained using the configurations of FIG. 1.

[0060] Referring to FIG. 3, the measurement circuit (110) may include measurement circuits (111, 113, and 115) each connected in parallel to resistors (211, 221, and 231) connected between each terminal of the dual battery pack and the chassis (240) of the vehicle to determine leakage current. The measurement circuits (111, 113, and 115) may include a switch, a reference power supply, and at least one reference resistor. A sensor (120) may measure the Analog-to-Digital Converter (ADC) potentials (311, 321, and 331) at specific points on the measurement circuits (111, 113, and 115). The reference voltage of the measurement circuits (113 and 115) may be positioned to serve as an offset to obtain a positive ADC voltage value. For example, in the case of the measurement circuit (113) connected to the (+) terminal (320) of the second battery pack (220), the ADC voltage value for the vehicle chassis (240) can be measured as positive or negative, so V ref1 A reference voltage can be set. In the case of the measurement circuit (115) connected to the (-) terminal of the first battery pack (210), since the ADC voltage value for the vehicle chassis (240) is measured as a negative number, V ref2 A reference voltage can be set. In one example, V ref1 2.5V, V ref2 It can be set to 5V.

[0061] Mathematical Equation 1 is a mathematical equation derived based on Kirchhoff's Current Law (KCL) with only the switch of the measurement circuit (111) closed and the switches of the other measurement circuits (113 and 115) open. When only the switch of the measurement circuit (111) is closed, the potential of the vehicle chassis (240) is V C1 It can be displayed as.

[0062]

[0063] In mathematical formula 1, I 1, I 2,and I3 are leakage current values ​​flowing through resistor (211), resistor (221) and resistor (231), respectively, and I 11 is the current value flowing on the measurement circuit (111). V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and V 11 R represents the potential (311) value measured by the sensor (120) on the measurement circuit (111). 1, R 2, and R3 represent the resistance values ​​of resistor (211), resistor (221) and resistor (231), respectively, and R 12 represents the resistance value of the reference resistor on the measurement circuit (111).

[0064] Mathematical Equation 2 is a mathematical equation derived based on Kirchhoff's current law with only the switch of the measurement circuit (113) closed and the switches of the other measurement circuits (111 and 115) open. When only the switch of the measurement circuit (113) is closed, the potential of the vehicle chassis (240) is V C2 It can be displayed as.

[0065]

[0066] In mathematical equation 2, I 1, I 2, and I3 are leakage current values ​​flowing through resistor (211), resistor (221) and resistor (231), respectively, and I 21 is the current value flowing on the measurement circuit (111). V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and V 21 R represents the potential (311) value measured by the sensor (120) on the measurement circuit (111). 1, R 2, and R3 represent the resistance values ​​of resistor (211), resistor (221) and resistor (231), respectively, and R 22 represents the resistance value of the reference resistor on the measurement circuit (111).

[0067] Equation 3 is a mathematical equation derived based on Kirchhoff's current law with only the switch of the measurement circuit (115) closed and the switches of the other measurement circuits (111 and 113) open. When only the switch of the measurement circuit (115) is closed, the potential of the vehicle chassis (240) is V C3 It can be displayed as.

[0068]

[0069] In mathematical equation 3, I 1, I 2, and I3 are leakage current values ​​flowing through resistor (211), resistor (221) and resistor (231), respectively, and I 31 is the current value flowing on the measurement circuit (111). V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and V 31 R represents the potential (311) value measured by the sensor (120) on the measurement circuit (111). 1, R 2, and R3 represent the resistance values ​​of resistor (211), resistor (221) and resistor (231), respectively, and R 32 represents the resistance value of the reference resistor on the measurement circuit (111).

[0070] By solving mathematical equations 1 through 3 simultaneously, it can be simplified as mathematical equation 4 below.

[0071]

[0072] Referring to Equation 4, since the value of the determinant is 0, the values ​​of the resistors (211, 221, and 231) for measuring leakage current cannot be obtained using Equations 1 to 3. In order to determine whether the dual battery pack is abnormal based on insulation resistance, an equation can be derived from a Thevenin equivalent circuit configured by controlling the switches of each measurement circuit (111, 113, and 115) in FIGS. 4 to 6 below.

[0073] FIG. 4 is a diagram showing a Thevenin equivalent circuit when the first switch is closed according to one embodiment of the present disclosure.

[0074] Referring to FIG. 4, the potential of the vehicle chassis (400) is V C1 Thus, the value of the reference resistor (410) of the measurement circuit (111) can be summed and set to R. Equation 5 can be derived from FIG. 4.

[0075]

[0076] In Equation 5, V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and R 1, R 2, R3 and R3 represent the resistance values ​​of resistor (211), resistor (221), and resistor (231), respectively. R TH1 and V TH1 represents the Thevenin resistance value and Thevenin voltage value of the Thevenin equivalent circuit of Fig. 4, respectively.

[0077] FIG. 5 is a diagram showing a Thevenin equivalent circuit when the second switch is closed according to one embodiment of the present disclosure.

[0078] Referring to FIG. 5, the potential of the vehicle chassis (500) is V C2 Thus, the value of the reference resistor (510) of the measurement circuit (113) can be summed and set to R. For convenience of calculation, the value R of the reference resistor (510) may be the same as the value R of the reference resistor (410) in FIG. 4. Equation 6 can be derived from FIG. 5.

[0079]

[0080] In Equation 6, V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and R 1, R 2, R3 and R3 represent the resistance values ​​of resistor (211), resistor (221), and resistor (231), respectively. RTH2 and V TH2 represents the Thevenin resistance value and Thevenin voltage value of the Thevenin equivalent circuit of Fig. 5, respectively.

[0081] FIG. 6 is a diagram showing a Thevenin equivalent circuit when a third switch is closed according to one embodiment of the present disclosure.

[0082] Referring to FIG. 6, the potential of the vehicle chassis (600) is V C3 Thus, the value of the reference resistor (510) of the measurement circuit (115) can be summed and set to R. For convenience of calculation, the value R of the reference resistor (610) may be the same as the value R of the reference resistor (410) in FIG. 4. Equation 7 can be derived from FIG. 6.

[0083]

[0084] In Equation 7, V1 and V2 represent the potential value of the (+) terminal of the first battery pack and the potential value of the (+) terminal of the second battery pack, respectively, and R 1, R 2, R3 and R3 represent the resistance values ​​of resistor (211), resistor (221), and resistor (231), respectively. R TH3 and V TH3 represents the Thevenin resistance value and Thevenin voltage value of the Thevenin equivalent circuit of Fig. 6, respectively.

[0085] For convenience in solving the system, if we substitute R1×R2=X, R1×R3=Y, and R2×R3=Z and solve Equations 5 through 7 simultaneously, we can obtain measurement parameters as shown in Equation 8 below.

[0086]

[0087] In mathematical equation 8, V C1 V is the potential value of the vehicle chassis (240) when only the switch on the measurement circuit (111) is closed. C2 This represents the potential value of the vehicle chassis (240) when only the switch on the measurement circuit (113) is closed.

[0088] The measurement parameter may have a real value from 0 to 1. The right side of mathematical formula 8 may be set as the first function, and the left side as the second function. The dual battery pack may be diagnosed for abnormality by comparing the measured value calculated by substituting the voltage measured through the sensor (120) in the measurement circuit (110) and the monitored battery pack voltage into the second function with the reference value calculated by substituting the insulation resistance value, which serves as a criterion for abnormality judgment, into the first function. If the measured value is less than the reference value, the processor (140) may diagnose that an abnormality related to insulation resistance has occurred in the dual battery pack, and if the measured value is greater than or equal to the reference value, it may diagnose that no abnormality related to insulation resistance has occurred in the dual battery pack.

[0089] Examples of reference values ​​calculated by substituting insulation resistance values ​​that serve as criteria for diagnosing abnormalities can be shown in Table 1. For instance, if you want to diagnose that a dual battery pack has an abnormality when the insulation resistance value drops below 1 MΩ, the reference value of the measurement parameter can be calculated as 0.416667 according to Table 1. In this case, the values ​​of the other insulation resistances were set to 5 MΩ, which is the resistance value placed on the board, but the reference values ​​for all three insulation resistances can also be calculated using values ​​set by the user.

[0090] R1R2R3R Reference value of measurement parameter 50000005000000500000010000000.62540000005000000500000010000000.60606110000005000000500000010000000.57692310000005000000500000010000000.526316100000050000005000 00010000000.4166678000005000000500000010000000.3773586000005000000500000010000000.3260874000005000000500000010000000.256411000005000000500000010000000.087719298

[0091] FIG. 7 is a flowchart of the operation of an electronic device according to a representative embodiment of the present disclosure.

[0092] Since the operation method of Fig. 7 can be performed by the electronic device (100) of Fig. 1, descriptions that overlap with the above-mentioned content may be omitted and may be explained using the configurations of Fig. 1.

[0093] The embodiment illustrated in FIG. 7 is merely one embodiment, and the order of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 7, and some operations illustrated in FIG. 7 may be omitted, the order of operations may be changed, or operations may be merged.

[0094] In step S710, the electronic device (100) can obtain measurement parameters related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit (110). In step S720, the electronic device (100) can diagnose the state of the dual battery pack based on the measurement parameters. Here, the dual battery pack may include a first battery pack (210), a second battery pack (220) having electrical characteristics different from those of the first battery pack (210), and a converter connected in series to the second battery pack (220), and the second battery pack (220) and the converter may be connected in parallel with the first battery pack (210).

[0095] FIG. 8 is a flowchart of the operation of an electronic device according to one embodiment of the present disclosure.

[0096] Since the operation method of Fig. 8 can be performed by the electronic device (100) of Fig. 1, descriptions that overlap with the above-mentioned content may be omitted and may be explained using the configurations of Fig. 1.

[0097] The embodiment illustrated in FIG. 8 is merely one embodiment, and the order of operations according to various embodiments of the present disclosure may differ from that illustrated in FIG. 8, and some operations illustrated in FIG. 8 may be omitted, the order of operations may be changed, or operations may be merged.

[0098] In step S810, the electronic device (100) can obtain measurement parameters related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit (110). In step S820, the electronic device (100) can determine reference values ​​for measurement parameters by inputting a first reference resistance regarding the first insulation resistance (211), a second reference resistance regarding the second insulation resistance (221), and a third reference resistance regarding the third insulation resistance (231) into a first function. In step S830, the electronic device (100) can calculate measurement values ​​for measurement parameters by inputting the supply voltage of the first battery pack (210), the supply voltage of the second battery pack (220), and the voltage of at least one measurement circuit (110) into a second function. In step S840, the electronic device (100) can check whether the measurement value is less than the reference value. If the electronic device (100) determines that the measured value is less than the reference value, it branches to step S851 (S840 -> Yes) and diagnoses that there is a problem with the dual battery pack. If the electronic device (100) determines that the measured value is greater than or equal to the reference value, it branches to step S852 (S840 -> No) and diagnoses that there is no problem with the dual battery pack.

[0099] The electronic device according to the embodiments described above may include a processor, memory for storing and executing program data, permanent storage such as a disk drive, a communication port for communicating with an external device, and user interface devices such as a touch panel, a key, an icon, etc. Methods implemented as software modules or algorithms may be stored on a computer-readable recording medium as computer-readable code or program instructions executable on the processor. Here, computer-readable recording media include magnetic storage media (e.g., ROM (read-only memory), RAM (random-access memory), floppy disks, hard disks, etc.) and optical reading media (e.g., CD-ROM, DVD (Digital Versatile Disc)). The computer-readable recording medium may be distributed across networked computer systems, allowing computer-readable code to be stored and executed in a distributed manner. The medium may be readable by a computer, stored in memory, and executed by a processor.

[0100] Various embodiments of the present disclosure may be represented by functional block configurations and various processing steps. These functional blocks may be implemented by various numbers of hardware and / or software configurations that execute specific functions. For example, the embodiments may employ integrated circuit configurations such as memory, processing, logic, look-up tables, etc., which can execute various functions by the control of one or more microprocessors or other control devices. Similar to how components may be implemented as software programming or software elements, the embodiments may be implemented in programming or scripting languages ​​such as C, C++, Java, assembler, etc., including various algorithms implemented as combinations of data structures, processes, routines, or other programming configurations. Functional aspects may be implemented as algorithms executed on one or more processors. Additionally, the embodiments may employ prior art for electronic configuration, signal processing, and / or data processing. Terms such as “mechanism,” “element,” “means,” and “configuration” may be used broadly and are not limited to mechanical and physical configurations. The above terms may include the meaning of a series of software processes (routines) in conjunction with processors, etc.

[0101] The aforementioned embodiments are merely examples, and other embodiments may be implemented within the scope of the claims set forth below.

Claims

1. In an electronic device, At least one measurement circuit connected to each terminal of the dual battery pack and the vehicle chassis; At least one sensor for measuring the voltage of the above-mentioned at least one measurement circuit; Memory; and Includes a processor, The above processor is, Based on the voltage of the above-mentioned at least one measurement circuit, a measurement parameter related to at least one insulation resistance of the dual battery pack is obtained, and Based on the above measurement parameters, it is configured to diagnose the state of the dual battery pack, and The above dual battery pack is, 1st battery pack; A second battery pack having electrical characteristics different from the first battery pack; and It includes a converter connected in series to the second battery pack, and An electronic device in which the second battery pack and the converter are connected in parallel with the first battery pack.

2. In Paragraph 1, The above at least one insulation resistance is, A first insulation resistance between the (+) terminal of the first battery pack and the chassis; A second insulation resistance between the (+) terminal of the second battery pack and the chassis; and An electronic device comprising a third insulation resistance between the (-) terminal of the first battery pack and the chassis.

3. In Paragraph 2, The above at least one measurement circuit is, A first measuring circuit connected in parallel to the first insulation resistance above; A second measuring circuit connected in parallel to the second insulation resistance; and An electronic device comprising a third measuring circuit connected in parallel to the third insulation resistance.

4. In Paragraph 3, Each of the above-mentioned at least one measurement circuit is, An electronic device comprising at least one of a reference resistor, a reference power source, and at least one of a switch.

5. In Paragraph 4, The above measurement parameters are, An electronic device expressed as a first function relating to the first insulation resistance, the second insulation resistance, and the third insulation resistance, or a second function relating to the supply voltage of the first battery pack, the supply voltage of the second battery pack, and the voltage of the at least one measuring circuit.

6. In Paragraph 5, The above processor is, An electronic device configured to determine a reference value for the measurement parameter by inputting a first reference resistance regarding the first insulation resistance, a second reference resistance regarding the second insulation resistance, and a third reference resistance regarding the third insulation resistance into the first function.

7. In Paragraph 6, The above processor is, By inputting the supply voltage of the first battery pack, the supply voltage of the second battery pack, and the voltage of the at least one measurement circuit into the second function, a measurement value regarding the measurement parameter is calculated, and An electronic device configured to diagnose the condition of the dual battery pack based on the above reference value and the above measurement value.

8. In Paragraph 7, The above processor is, If the above measured value is less than the above reference value, it is determined that an abnormality regarding insulation resistance has occurred in the dual battery pack, and An electronic device configured to determine that no abnormality regarding insulation resistance has occurred in the dual battery pack when the above measured value is greater than or equal to the above reference value.

9. In Paragraph 1, The above converter is, An electronic device that is a DC-DC converter that converts the magnitude of the supply voltage of the second battery pack to be equal to the magnitude of the supply voltage of the first battery pack.

10. A method for diagnosing a dual battery pack of an electronic device, A step of obtaining measurement parameters related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit; and Based on the above measurement parameters, the method includes the step of diagnosing the state of the dual battery pack, The above dual battery pack is, 1st battery pack; A second battery pack having electrical characteristics different from the first battery pack; and It includes a converter connected in series to the second battery pack, and A dual battery pack diagnostic method for an electronic device, wherein the second battery pack and the converter are connected in parallel with the first battery pack.

11. A computer-readable, non-transient, computer-readable storage medium having a program stored on it for executing on a computer a method for an electronic device to diagnose a dual battery pack, The above dual battery pack diagnostic method is: A step of obtaining measurement parameters related to at least one insulation resistance of the dual battery pack based on the voltage of at least one measurement circuit; and Characterized by including a step of diagnosing the state of the dual battery pack based on the above measurement parameters, The above dual battery pack is, 1st battery pack; A second battery pack having electrical characteristics different from the first battery pack; and It includes a converter connected in series to the second battery pack, and The above second battery pack and the converter are connected in parallel with the first battery pack, forming a non-transient computer-readable storage medium.

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