Apparatus and method for diagnosing and managing battery state

Abstract

The present disclosure relates to an apparatus and a method for diagnosing and managing a state of a battery, and aims to provide an apparatus and a method for diagnosing and managing a state of a battery capable of shortening a time for diagnosing and managing a state of a battery cell and further improving determination accuracy. To this end, the present disclosure provides an apparatus for diagnosing and managing a state of a battery, comprising: a sensor module configured to detect a temperature and a voltage of the battery; and a processor configured to calculate a cell increment voltage based on the temperature or the voltage of the battery detected by the sensor module, calculate a differential value of the temperature, the voltage, or the cell increment voltage, and diagnosing an abnormal battery cell or limiting battery charging power on the basis of a result of comparing a specific value calculated by substituting the differential value into a specified equation with a pre-specified threshold value.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0150497, filed on November 3, 2023, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] Aspects of embodiments of the present disclosure relate to apparatus and methods for diagnosing and managing battery status. Background Art

[0004] Generally, a battery pack is composed of a plurality of battery cells, and a battery management system (BMS) monitors the performance and safety of the battery cells.

[0005] The battery management system (BMS) monitors the voltage and temperature of the battery cells, and based on this, performs battery cell management, state of charge (SOC) prediction, input and output power limitation to prevent overheating / overcharging / overdischarging, power relay assembly (PRA) control, fault diagnosis, etc.

[0006] Battery cell management is a function that regulates the voltage of each cell and manages the battery to prevent battery overload. When a specific battery cell fails or does not work, the battery management system (BMS) performs control so that another battery cell can replace the function of the specific battery cell through cell balancing.

[0007] The battery management system (BMS) detects the voltage, current and temperature of the battery to predict the state of charge and based on this allows the battery level to be checked. The SOC sets upper and lower limits according to a preset availability zone, and in the event of deviation from the availability zone, the battery management system (BMS) prevents charging of the battery.

[0008] In order to operate the battery stably, an upper limit (charge end voltage) and a lower limit (discharge end voltage) of the fully charged battery voltage are set, and when the battery voltage deviates from the charge end voltage or the discharge end voltage, the battery management system (BMS) detects and stops charging and discharging the battery.

[0009] When an electric vehicle's high-voltage battery fails or becomes uncontrollable, the battery management system (BMS) turns off a relay to block the power supply, thereby protecting the high-voltage battery and preventing the risk of a larger accident.

[0010] In addition, the battery management system (BMS) diagnoses faults in the battery system, specifically, detects operational abnormalities (such as overvoltage / undervoltage), battery cells, current, temperature sensors, disconnection, short circuit, cooling fan, communication, etc., and sends a diagnostic trouble code (DTC) to another controller.

[0011] As described above, a battery management system (BMS) performs diagnosis and management of battery cell states, and as the execution of these diagnosis and management operations is delayed or the determination accuracy deteriorates, the risk of an accident gradually increases.

[0012] Therefore, a method for further shortening the time for diagnosing and managing the status of a battery cell and further improving the accuracy of the determination is needed.

[0013] The above information disclosed in the Background of the Invention is only for helping understanding of the background of the invention and therefore may include information that does not constitute related art. Summary of the invention

[0014] The present invention aims to provide an apparatus and method for diagnosing and managing the status of a battery, which can shorten the time for diagnosing and managing the status of a battery cell and further improve the determination accuracy.

[0015] Furthermore, the present invention is directed to providing an apparatus and method for diagnosing and managing a battery state, which is capable of detecting a temperature of a battery cell, extracting a differential value of the temperature, and controlling the temperature of the battery cell according to the extracted differential value to prevent the battery cell from overheating.

[0016] Furthermore, the present invention is directed to providing an apparatus and method for diagnosing and managing a battery state, which is capable of determining the occurrence of cell imbalance based on a differential value of a cell incremental voltage and performing cell balancing and current control.

[0017] Furthermore, the present invention aims to provide an apparatus and method for diagnosing and managing a battery state, which can detect an abnormal cell based on the distribution of a differential value of a cell incremental voltage over time to exclude the influence of cell balance and effectively detect an abnormal cell.

[0018] However, the technical problems to be solved by the present invention are not limited to the above problems, and other problems not mentioned will be clearly understood by those skilled in the art from the description of the present invention disclosed below.

[0019] According to one aspect of the present invention, there is provided an apparatus for diagnosing and managing a battery status, comprising: a sensor module configured to detect a temperature and a voltage of a battery; and a processor configured to calculate a cell incremental voltage based on the temperature or voltage of the battery detected by the sensor module, calculate a differential value of the temperature, voltage or cell incremental voltage, and diagnose an abnormal battery cell or limit a battery charging power based on a result of comparing a specific value calculated by substituting the differential value into a specified equation with a pre-specified threshold value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following drawings attached to this specification illustrate embodiments of the present disclosure and, together with the detailed description of the present disclosure, further describe various aspects and features of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the drawings:

[0021] Figure 1 The schematic configuration of a device for diagnosing and managing a battery status according to an embodiment of the present invention is exemplarily shown;

[0022] Figure 2 A flowchart for describing a method for diagnosing and managing a battery status according to a first embodiment of the present invention is exemplarily shown;

[0023] Figure 3 exemplarily shows a flow chart for describing a method for diagnosing and managing a battery status according to a second embodiment of the present invention; and

[0024] Figure 4 A flow chart for describing a method for diagnosing and managing a battery status according to a third embodiment of the present invention is shown as an example. DETAILED DESCRIPTION

[0025] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Terms or words used in this specification and claims should not be interpreted as limited to the usual or dictionary meanings, and should be interpreted as meanings and concepts consistent with the technical concept of the present disclosure based on the concept that the inventor can be his / her own lexicon compiler to appropriately define terms so as to best explain the principle of his / her invention.

[0026] The embodiments described in this specification and the configurations shown in the drawings are only some embodiments of the present disclosure and do not represent all technical ideas, aspects and features of the present disclosure. Therefore, it should be understood that there may be various equivalents and modifications that can replace or modify the embodiments described herein when submitting this application.

[0027] It should be understood that when an element or layer is referred to as being "on another element or layer," "connected to another element or layer," or "coupled to another element or layer," it may be directly on another element or layer, directly connected or coupled to another element or layer, or one or more intermediate elements or layers may also be present. When an element or layer is referred to as being "directly on another element or layer," "directly connected to another element or layer," or "directly coupled to another element or layer," there are no intermediate elements or layers. For example, when a first element is described as being "coupled" or "connected" to a second element, the first element may be directly coupled or connected to the second element, or the first element may be indirectly coupled or connected to the second element via one or more intermediate elements.

[0028] In the accompanying drawings, for clarity, the sizes of various elements, layers, etc. may be enlarged. The same reference numerals represent the same elements. As used herein, the term "and / or" includes any and all combinations of one or more associated listed items. In addition, the use of "may" when describing the embodiments of the present disclosure relates to "one or more embodiments of the present disclosure". Expressions such as "at least one of ... " and "any one of ... " modify the entire element list when following the element list, rather than modifying the individual elements in the list. When phrases such as "at least one of A, B and C", "at least one of A, B or C", "at least one of the group selected from A, B and C" or "at least one of A, B and C" are used to specify the list of elements A, B and C, the phrase may refer to any and all suitable combinations or subsets of A, B and C, such as A, B, C, A and B, A and C, B and C or A and B and C. As used herein, the terms "use" and "being used" may be considered to be synonymous with the terms "utilize" and "being utilized" respectively. As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation rather than terms of degree, and are intended to take into account the inherent variations in measurements or calculations that one of ordinary skill in the art would recognize.

[0029] It should be understood that although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish an element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teaching of the exemplary embodiment, the first element, component, region, layer or part discussed below can be referred to as a second element, component, region, layer or part.

[0030] For ease of description, spatially relative terms such as "below," "below," "lower," "above," "upper," etc. may be used herein to describe the relationship of one element or feature to another one or more elements or features as shown in the figures. It should be understood that, in addition to the orientation shown in the figures, spatially relative terms are intended to cover different orientations of the device in use or operation. For example, if the device in the drawings is turned over, elements described as being "below" or "below" other elements or features will be oriented as being "above" or "above" other elements or features. Therefore, the term "below" can cover both above and below orientations. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0031] The terms used herein are for the purpose of describing the embodiments of the present disclosure, and are not intended to limit the present disclosure. As used herein, the singular forms "one" and "an" are also intended to include plural forms, unless the context clearly states otherwise. It will be further understood that when used in this specification, the terms "include" and / or "comprise" specify the presence of the features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0032] In addition, any numerical range disclosed and / or listed herein is intended to include all sub-ranges of the same numerical precision contained in the listed range. For example, the range of "1.0 to 10.0" is intended to include all sub-ranges between the minimum value 1.0 and the maximum value 10.0 (and including the endpoints), that is, having a minimum value equal to or greater than 1.0 and a maximum value equal to or less than 10.0, such as 2.4 to 7.6. Any maximum numerical limit described herein is intended to include all lower numerical limits contained therein, and any minimum numerical limit described in this specification is intended to include all higher numerical limits contained therein. Therefore, the applicant reserves the right to modify this specification (including claims) to explicitly state any sub-ranges contained in the range explicitly stated herein.

[0033] Referring to two compared elements, features, etc. as "the same" may mean that they are "substantially the same." Thus, the phrase "substantially the same" may include situations with what is considered in the art to be low deviations (e.g., 5% or less deviation). In addition, when a parameter is referred to as being uniform in a given area, this may mean that it is uniform in an average sense.

[0034] Throughout the specification, unless otherwise specified, each element may be in the singular or in the plural.

[0035] When any element is referred to as being arranged (or positioned or located) "above (or below)" or "on (or below)" a component, it may mean that the arbitrary element is placed in contact with the upper (or lower) surface of the component, and may also mean that another component may be inserted between the component and any arbitrary element arranged (or positioned or located) above (or below) the component.

[0036] Furthermore, it should be understood that when an element is referred to as being "coupled," "linked," or "connected" to another element, the elements may be directly "coupled," "linked," or "connected" to each other, or there may be an intermediate element between them, through which the element may be "coupled," "linked," or "connected" to another element. Furthermore, when a component is referred to as being "electrically coupled" to another component, the component may be directly connected to the other component, or there may be an intermediate component therebetween, so that the component and the other component are indirectly connected to each other.

[0037] Throughout the specification, unless otherwise specified, when "A and / or B" is stated, it means A, B, or A and B. That is, "and / or" includes any or all combinations of the listed multiple items. When "C to D" is stated, unless otherwise specified, it means C or greater and D or less.

[0038] Figure 1 is an exemplary diagram showing a schematic configuration of an apparatus for diagnosing and managing a battery state according to an embodiment of the present invention.

[0039] refer to Figure 1 , an apparatus for diagnosing and managing a battery state according to an embodiment of the present invention includes a sensor module 110 , a processor 120 and a current blocking module 130 .

[0040] The sensor module 110 includes a sensor that detects the temperature of a battery module or a battery cell.

[0041] The sensor module 110 includes a sensor that detects a voltage of a battery module or a battery cell.

[0042] The processor 120 may calculate a cell delta voltage (ie, a maximum cell voltage value−a minimum cell voltage value) of the battery module.

[0043] The processor 120 may calculate the temperature or voltage of the battery module or the battery cell detected by the sensor module 110 or a differential value of a cell incremental voltage of the battery module or the battery cell calculated by the processor 120 .

[0044] The processor 120 can diagnose abnormal battery cells or limit power (i.e., power input to charge the battery cells) by comparing a value calculated by a specified equation based on a differential value (referred to as a control amount C for convenience) and multiple pre-specified thresholds (e.g., a first threshold and a second threshold).

[0045] The current blocking module 130 blocks input power for charging the battery cells according to the control of the processor 120 .

[0046] The current blocking module 130 includes a relay.

[0047] Hereinafter, an operation of diagnosing and managing the state of a battery (ie, including the concept of a battery module and a battery cell) by the processor 120 will be described in more detail.

[0048] -First Embodiment-

[0049] Figure 2 is a flowchart for describing a method of diagnosing and managing a battery status according to a first embodiment of the present invention.

[0050] refer to Figure 2 , the processor 120 detects a temperature T of a battery module (not shown) ( S101 ).

[0051] The processor 120 calculates the differential value of the detected temperature T of the battery module (S102).

[0052] The processor 120 converts the differential value The following designated equation 1 is substituted to calculate a specific value (referred to as a first control amount C1 for convenience) (S103).

[0053] [Equation 1]

[0054] The first control amount

[0055] Here, T is the temperature of the battery module, α refers to the weight of the temperature, β refers to the weight of the temperature change amount, and α and β can be set in advance using experimental data.

[0056] The processor 120 compares the first control amount C1 with a first control threshold CONTROL_THRESHOLD1 and a second control threshold CONTROL_THRESHOLD2 which are pre-specified (S104). Here, the first control threshold CONTROL_THRESHOLD1 is a value smaller than the second control threshold CONTROL_THRESHOLD2.

[0057] As a result of the comparison (S104), when the first control quantity C1 is greater than the first control threshold CONTROL_THRESHOLD1 (i.e., CONTROL_THRESHOLD1<first control quantity C1≤CONTROL_THRESHOLD2), the processor 120 limits power (i.e., power input to charge the battery cells), and when the first control quantity C1 is greater than the second control threshold CONTROL_THRESHOLD2 (i.e., first control quantity C1>CONTROL_THRESHOLD2), the power input to the battery is blocked by the current blocking module 130 (e.g., a relay).

[0058] As described above, in this embodiment, since it is determined that the temperature tends to increase with the differential value of the temperature T of the battery module even when the temperature T of the battery module does not reach the temperature threshold value TEMP_THRESHOLD, Therefore, even when the temperature T of the battery module does not reach the temperature threshold TEMP_THRESHOLD, the temperature rise can be prevented by allowing the current limitation (or current blocking) to be performed earlier.

[0059] In the present embodiment, there is an effect of preventing the temperature of the battery module from reaching an extreme temperature by determining the possibility of overheating of the battery module earlier, thereby improving the battery overheat prevention performance.

[0060] -Second Embodiment-

[0061] Figure 3 is a flowchart for describing a method of diagnosing and managing a battery status according to a second embodiment of the present invention.

[0062] refer to Figure 3 , the processor 120 calculates a cell incremental voltage (ie, a maximum cell voltage value−a minimum cell voltage value) of a battery module (not shown) ( S201 ).

[0063] The processor 120 calculates the differential value of the cell increment voltage V (S202).

[0064] The processor 120 calculates the differential value of the cell increment voltage by Substituting into the following designated equation 2, a specific value (for convenience, referred to as a second control amount C2) is calculated (S203).

[0065] [Equation 2]

[0066] The second control amount

[0067] Here, V is the cell incremental voltage, α refers to the weight of the cell incremental voltage, β refers to the weight of the change in V over time, and α and β can be preset using experimental data.

[0068] The processor 120 compares the second control amount C2 with the third control threshold CONTROL_THRESHOLD3 and the fourth control threshold CONTROL_THRESHOLD4 which are pre-specified (S204). Here, the third control threshold CONTROL_THRESHOLD3 is a value smaller than the fourth control threshold CONTROL_THRESHOLD4.

[0069] As a result of the comparison (S204), when the second control amount C2 is greater than the third control threshold CONTROL_THRESHOLD3 (i.e., CONTROL_THRESHOLD3<second control amount C2≤CONTROL_THRESHOLD4), the processor 120 performs cell balancing, and when the second control amount C2 is greater than the fourth control threshold CONTROL_THRESHOLD4 (i.e., second control amount C2>CONTROL_THRESHOLD4), it is determined that a cell deviation fault occurs (S205).

[0070] As described above, in this embodiment, since the voltage difference between cells is determined to tend to increase with the differential value of the cell increment voltage V even when the cell increment voltage V does not reach the voltage threshold value V_THRESHOLD, The voltage difference between cells can be reduced by allowing cell balancing to be performed earlier because the voltage increases rapidly.

[0071] In this embodiment, there is an effect that the cell unbalance detection performance can be improved even when the cell voltage fluctuates.

[0072] Meanwhile, when an abnormal battery cell exists, the abnormal battery cell may be detected using the cell increment voltage.

[0073] In this case, the voltage of the abnormal battery cell decreases faster than the voltages of other battery cells, and in this case, the cell increment voltage can be reduced by performing cell balancing. However, since the voltage decreases rapidly in the abnormal battery cell, the cell increment voltage increases again, that is, since the cell increment voltage increases and decreases rapidly even if there is an abnormal battery cell, there is a problem that the diagnosis (determination) of the abnormal battery cell is delayed.

[0074] That is, since the cell increment voltage is maintained within a specified range by cell balancing even when an abnormal battery cell is diagnosed, there is a problem that the timing of diagnosis (determination) of the abnormal battery cell may be delayed.

[0075] Therefore, reference will be made to Figure 4 A method is described that enables detection of abnormal battery cells without being affected by cell balancing.

[0076] -Third Embodiment-

[0077] Figure 4 is a flowchart for describing a method of diagnosing and managing a battery status according to a third embodiment of the present invention.

[0078] refer to Figure 4 , the processor 120 calculates a cell incremental voltage (ie, a maximum cell voltage value−a minimum cell voltage value) of a battery module (not shown) ( S301 ).

[0079] The processor 120 calculates the differential value of the cell incremental voltage V in real time. (S302).

[0080] Here, V is the battery voltage increment and dt is the unit time (e.g., 10 to 100 ms).

[0081] The processor 120 calculates the differential value of the cell increment voltage V The distribution and frequency within a specified time period (eg, one second) (S303).

[0082] In this case, since the voltage drop rate is important for diagnosing an abnormal battery cell, the distribution and frequency may be calculated only for the voltage drop rate.

[0083] The processor 120 converts the differential value of the cell increment voltage V The distribution and frequency of are compared with the pre-specified first distribution threshold DV_THR1 and second distribution threshold DV_THR2 and the first frequency threshold FREQ1 and second frequency threshold FREQ2 (S304).

[0084] Here, the second distribution threshold DV_THR2 is a value greater than the first distribution threshold DV_THR1, and the second frequency threshold FREQ2 is a value greater than the first frequency threshold FREQ1.

[0085] For example, the differential value of the cell incremental voltage V The distribution within a specified time period (e.g., one second) is one of less than the first distribution threshold DV_THR1, greater than or equal to the first distribution threshold DV_THR1 and less than the second distribution threshold DV_THR2, and greater than or equal to the second distribution threshold DV_THR2. The frequency within a specified time period (eg, one second) is one of less than the first frequency threshold FREQ1, greater than or equal to the first frequency threshold FREQ1 and less than the second frequency threshold FREQ2, and greater than or equal to the second frequency threshold FREQ2.

[0086] As a result of the comparison (S304), when the differential value of the cell increment voltage V The frequency of the distribution less than the first distribution threshold DV_THR1 within a specified time period (for example, one second) is greater than the second frequency threshold FREQ2, or when the differential value of the cell increment voltage V When the frequency of the distribution greater than or equal to the first distribution threshold DV_THR1 and less than the second distribution threshold DV_THR2 within the specified period is greater than the first frequency threshold FREQ1, the processor diagnoses the cell having the smallest cell incremental voltage value as an abnormal battery cell (S305).

[0087] In the present embodiment, the distribution of the differential value of the cell incremental voltage over time is accumulated over a specified period of time, thereby diagnosing an abnormal battery cell based on the cumulative frequency of each distribution. That is, in the present embodiment, there is an effect of allowing the diagnosis of an abnormal battery cell without being affected by cell balancing by diagnosing an abnormal battery cell based on the frequency of each distribution of the differential value of the cell incremental voltage over time.

[0088] The implementations described in this specification may be implemented, for example, as methods or processes, devices, software programs, data streams, or signals. Although only the context of a single implementation form is discussed (e.g., only methods are discussed), the implementations of the features discussed may also be implemented in other forms (e.g., devices or programs). Devices may be implemented with appropriate hardware, software, firmware, etc. The methods may be implemented in a device such as a processor, which generally refers to a processing device including a computer, a microprocessor, an integrated circuit, a programmable logic device, etc. In addition, processors include communication devices such as computers, cellular phones, portable / personal digital assistants (PDAs), other devices that facilitate information exchange between end users, etc.

[0089] According to the present invention, the time for diagnosing and managing the state of a battery cell can be shortened, and the determination accuracy can be further improved.

[0090] Furthermore, according to the present invention, the temperature of the battery cell is detected, a differential value of the temperature is extracted, and the temperature of the battery cell is controlled according to the extracted differential value to prevent the battery cell from being overheated.

[0091] Furthermore, according to the present invention, the occurrence of cell imbalance can be determined based on the differential value of the cell incremental voltage to perform cell balancing and current control.

[0092] Furthermore, according to the present invention, an abnormal cell can be detected based on the temporal distribution of the differential value of the cell incremental voltage to exclude the influence of the battery balance and effectively detect the abnormal cell.

Claims

1. A device for diagnosing and managing battery status, comprising: a sensor module configured to detect a temperature and a voltage of a battery; and A processor is configured to calculate a cell increment voltage based on a temperature or a voltage of a battery detected by a sensor module, calculate a differential value of the temperature, the voltage, or the cell increment voltage, and diagnose an abnormal battery cell or limit battery charging power based on a result of comparing a specific value calculated by substituting the differential value into a specified equation with a pre-specified threshold value.

2. The apparatus according to claim 1, further comprising: a current blocking module configured to block battery charging power according to the control of the processor, Wherein, the current blocking module includes a relay.

3. The device according to claim 1, wherein: The processor detects the temperature (T) of the battery module and calculates the differential value of the temperature (T) of the battery module. And based on the differential value of the temperature (T) of the battery module The battery charging power is limited by comparing the specific value calculated by substituting it into the specified equation 1 with a pre-specified threshold value. Here, α refers to the weight of temperature, and β refers to the weight of the temperature change amount.

4. The device according to claim 1, wherein: The processor calculates the cell increment voltage (V) of the battery module and calculates the differential value of the cell increment voltage (V) And based on the differential value of the cell increment voltage (V) Substituting the specific value calculated by the specified equation 2 into the result compared with the pre-specified threshold value to perform cell balancing or determine cell deviation fault, Where α is the weight of the cell incremental voltage, and β is the weight of the change in V over time.

5. The device according to claim 1, wherein: The processor calculates the cell increment voltage (V) of the battery module and calculates the differential value of the cell increment voltage (V) in real time. Calculate the differential value of the monomer incremental voltage (V) The distribution and frequency within a specified time period, and based on the differential value of the cell incremental voltage (V) The abnormal battery cell is diagnosed based on the result of comparing the distribution and frequency of the battery with the pre-specified first distribution threshold value (DV_THR1) and the second distribution threshold value (DV_THR2) and the first frequency threshold value (FREQ1) and the second frequency threshold value (FREQ2).

6. A method for diagnosing and managing battery status, comprising: The processor detects the temperature (T) of the battery module; Calculating, by the processor, a differential value of the temperature (T) of the battery module; and The charging power of the battery is limited by the processor based on a result of comparing a specific value calculated from a differential value of a temperature (T) of the battery module with a pre-specified threshold value.

7. The method according to claim 6, wherein: The processor calculates a first control amount (C1) as a specific value based on Equation 1, Here, α refers to the weight of temperature, and β refers to the weight of the temperature change amount.

8. The method according to claim 6, wherein: When comparing the specific value with the pre-specified threshold value, the processor compares the first control amount (C1) with a pre-specified first control threshold value (CONTROL_THRESHOLD1) and a pre-specified second control threshold value (CONTROL_THRESHOLD2).

9. The method according to claim 6, wherein: In limiting the charging power of the battery based on a result of comparing the specific value with a pre-specified threshold, the processor limits the charging power when a first control amount (C1) is greater than a first control threshold (CONTROL_THRESHOLD1).

10. The method according to claim 6, wherein: When limiting the charging power of the battery based on the result of comparing the specific value with a pre-specified threshold, the processor blocks the power input to the battery through the current blocking module when the first control amount (C1) is greater than the second control threshold (CONTROL_THRESHOLD2).

11. A method for diagnosing and managing battery status, comprising: The processor calculates the cell increment voltage (V) of the battery module; The processor calculates the differential value of the cell incremental voltage (V); and Cell balancing is performed or cell deviation fault is determined by the processor based on a result of comparing a specific value calculated from a differential value of a cell incremental voltage (V) with a pre-specified threshold value.

12. The method according to claim 11, wherein: The cell increment voltage is a voltage calculated by "maximum cell voltage value-minimum cell voltage value".

13. The method according to claim 11, wherein: The processor calculates the second control amount (C2) as a specific value based on Equation 2, Where α is the weight of the cell incremental voltage, and β is the weight of the change in V over time.

14. The method according to claim 11, wherein: When comparing the specific value with the pre-specified threshold value, the processor compares the second control amount (C2) with a pre-specified third control threshold value (CONTROL_THRESHOLD3) and a pre-specified fourth control threshold value (CONTROL_THRESHOLD4).

15. The method according to claim 11, wherein: When the cell balancing is performed based on a result of comparing the specific value with a pre-specified threshold value, the processor performs the cell balancing when the second control amount (C2) is greater than a third control threshold value (CONTROL_THRESHOLD3).

16. The method according to claim 11, wherein: In determining the cell deviation fault based on a result of comparing the specific value and a pre-specified threshold, the processor determines the cell deviation fault when the second control amount (C2) is greater than a fourth control threshold (CONTROL_THRESHOLD4).

17. The method according to claim 11, further comprising: In calculating the differential value of the monomer incremental voltage (V) after, The processor calculates the differential value of the cell increment voltage (V) distribution and frequency over a specified time period; and The processor is based on the differential value of the monomer incremental voltage (V) The abnormal battery cell is diagnosed based on the result of comparing the distribution and frequency of the battery with the pre-specified first distribution threshold value (DV_THR1) and the second distribution threshold value (DV_THR2) and the first frequency threshold value (FREQ1) and the second frequency threshold value (FREQ2).

18. The method according to claim 17, wherein: The differential value of the monomer incremental voltage (V) The distribution includes one of less than the first distribution threshold (DV_THR1), greater than or equal to the first distribution threshold (DV_THR1) and less than the second distribution threshold (DV_THR2), and greater than or equal to the second distribution threshold (DV_THR2).

19. The method according to claim 17, wherein: The differential value of the monomer incremental voltage (V) The frequency includes one of less than the first frequency threshold (FREQ1), greater than or equal to the first frequency threshold (FREQ1) and less than the second frequency threshold (FREQ2), and greater than or equal to the second frequency threshold (FREQ2).

20. The method according to claim 17, wherein: When diagnosing abnormal battery cells based on the comparison results, when the differential value of the cell increment voltage (V) The frequency of the distribution less than the first distribution threshold (DV_THR1) within a specified time period is greater than the second frequency threshold (FREQ2), or when the differential value of the cell increment voltage (V) The processor diagnoses a cell having a minimum cell voltage value as an abnormal battery cell when a frequency of distribution greater than or equal to a first distribution threshold (DV_THR1) and less than a second distribution threshold (DV_THR2) within a specified period is greater than a first frequency threshold (FREQ1).

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