Battery diagnostic apparatus and method

Abstract

According to one embodiment of the present invention, a battery diagnostic device located within a battery system comprises: at least one processor; and a memory to store at least one instruction to be executed by the at least one processor. Here, the at least one instruction may include: an instruction to diagnose whether the battery is abnormal based on the at least one battery state value during a battery charging / discharging process; if the battery is abnormal, generating an instruction of a first diagnosis result; an instruction to verify validity of the first diagnosis result based on whether a door provided in a container accommodating the battery is open / closed; and an instruction to output the first diagnosis result as a final diagnosis result if the first diagnosis result is determined to be valid.

Description

Technical Field

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0015396 filed in the Korean Intellectual Property Office on February 6, 2023, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a battery diagnosis apparatus and method, and more particularly, to a battery diagnosis apparatus and method for preventing misdiagnosis due to opening and closing of a container including a battery. Background Art

[0003] Secondary batteries that can be recharged and reused can be used as energy sources for small devices such as mobile phones, tablet PCs, and vacuum cleaners, and can also be used as energy sources for medium to large devices such as automobiles and energy storage systems (ESS) for smart grids.

[0004] Depending on the requirements of the system, the secondary battery can be used in the form of a component, such as a battery module in which a plurality of battery cells are connected in series or in parallel, or a battery pack in which a plurality of battery modules are connected in series or in parallel. In the case of medium to large devices such as electric vehicles, a high-capacity battery system with a plurality of battery packs connected in parallel can be applied to meet the required capacity of the corresponding device.

[0005] Battery cells are manufactured through an assembly process and an activation process. Since battery cells are assembled in a discharged state, an activation process must be performed after the battery cell assembly process to activate the positive electrode active material and create a surface film (SEI: solid electrolyte interface) on the negative electrode in order to be used as a battery. This activation process is called a formation process.

[0006] The forming process may be performed in such a manner that the charge and discharge device may repeatedly charge and discharge the battery cell according to preset voltage and current conditions using an electrode probe. In addition, in order to test the performance of the battery cell, electrical characteristics may be measured during the charge and discharge process of the battery cell after the battery cell is mounted on the charge and discharge device for the forming process.

[0007] During the process of the charge and discharge test of the battery, monitoring of one or more state values ​​of the battery is performed to diagnose abnormalities such as whether a fire has occurred. Here, in the case where the door of the container accommodating the battery is opened, the state value of the battery may be distorted due to temperature changes or physical impacts, which may lead to misdiagnosis.

[0008] Therefore, as a technical solution capable of solving these problems of the prior art, there is a need for an appropriate battery diagnosis technology to prevent misdiagnosis caused by opening and closing of a container accommodating a battery. Summary of the invention

[0009] Technical issues

[0010] To eliminate one or more problems of the related art, embodiments of the present disclosure provide a battery diagnosis apparatus that can prevent misdiagnosis due to opening and closing of a container accommodating a battery.

[0011] To eliminate one or more problems of the related art, embodiments of the present disclosure also provide a battery diagnosis method performed by a battery diagnosis apparatus.

[0012] To eliminate one or more problems of the related art, embodiments of the present disclosure also provide a battery testing system including a battery diagnostic apparatus.

[0013] Technical Solution

[0014] To achieve the purpose of the present disclosure, a battery diagnostic device located in a battery system may include: at least one processor; and a memory configured to store at least one instruction executed by the at least one processor. Here, the at least one instruction may include: an instruction for diagnosing whether a battery is abnormal based on at least one battery status value during a battery charging and discharging process; an instruction for generating a first diagnostic result when an abnormality occurs in the battery; an instruction for verifying the validity of the first diagnostic result based on whether a door set on a container for accommodating the battery is open or closed; and an instruction for outputting the first diagnostic result as a final diagnostic result when the first diagnostic result is determined to be valid.

[0015] Instructions for verifying the validity of the first diagnostic result may include: instructions for checking door status information when collecting at least one battery status value; instructions for determining the first diagnostic result as valid when it is confirmed that the door is in a closed state; and instructions for determining the first diagnostic result as invalid when it is confirmed that the door is in an open state.

[0016] The at least one instruction may further include an instruction for invalidating the first diagnostic result if the first diagnostic result is determined to be invalid.

[0017] The instruction for invalidating the first diagnosis result may include: an instruction for correcting the battery status value using the information about the door status; and an instruction for re-diagnosing whether the battery is abnormal based on the corrected battery status value.

[0018] Here, the instructions for re-diagnosing whether the battery is abnormal may include: instructions for generating a second diagnosis result if it is determined as a result of the re-diagnosis that an abnormality occurs in the battery; and instructions for outputting the second diagnosis result as a final diagnosis result.

[0019] The instructions for correcting the battery status value may include: instructions for determining a duration that the door is open; and instructions for correcting the battery status value associated with the internal temperature of the container based on the duration that the door is open.

[0020] The instructions for correcting the battery status value may include instructions for determining whether correction of the battery status value is possible based on an amount of change in the battery status value.

[0021] Here, the instruction for determining whether correction of the battery state value can be performed may include an instruction for determining that correction of the battery state value cannot be performed if the amount of change in the battery state value exceeds a predetermined threshold value.

[0022] According to another embodiment of the present disclosure, a battery diagnostic method performed by a battery diagnostic device located within a battery system may include the following steps: diagnosing whether the battery is abnormal based on at least one battery status value during the process of charging and discharging the battery; generating a first diagnostic result when an abnormality occurs in the battery; verifying the validity of the first diagnostic result based on whether a door provided on a container accommodating the battery is open or closed; and when the first diagnostic result is determined to be valid, outputting the first diagnostic result as a final diagnostic result.

[0023] Verifying the validity of the first diagnostic result may include: checking information about the door state when collecting at least one battery status value; determining the first diagnostic result as valid when confirming that the door is in a closed state; and determining the first diagnostic result as invalid when confirming that the door is in an open state.

[0024] The method may further include invalidating the first diagnostic result if the first diagnostic result is determined to be invalid.

[0025] Invalidating the first diagnosis result may include: correcting the battery status value using information about the door status; and re-diagnosing whether the battery is abnormal based on the corrected battery status value.

[0026] Re-diagnosing whether the battery is abnormal may include: generating a second diagnosis result if it is determined as a result of the re-diagnosis that an abnormality occurs in the battery; and outputting the second diagnosis result as a final diagnosis result.

[0027] Correcting the battery status value may include: determining a duration that the door is open; and

[0028] A battery status value associated with the internal temperature of the container is corrected based on the duration that the door is open.

[0029] Correcting the battery status value may include determining whether correction of the battery status value is possible based on an amount of change in the battery status value.

[0030] Determining whether correction of the battery status value can be performed may include determining that correction of the battery status value cannot be performed if the amount of change in the battery status value exceeds a predetermined threshold.

[0031] According to another embodiment of the present disclosure, a battery testing system configured to test a battery by charging and discharging the battery may include: a container that accommodates the battery and includes an openable door; and a battery diagnostic device configured to diagnose whether the battery is abnormal based on at least one battery state value during the process of charging and discharging the battery. Here, the battery diagnostic device may: generate a first diagnostic result when an abnormality occurs in the battery, verify the validity of the first diagnostic result based on whether the door set on the container accommodating the battery is open or closed, and output the first diagnostic result as a final diagnostic result when the first diagnostic result is determined to be valid.

[0032] The battery diagnostic device can also be configured to: check information about the door status when collecting at least one battery status value; determine the first diagnostic result as valid when it is confirmed that the door is in a closed state; and determine the first diagnostic result as invalid when it is confirmed that the door is in an open state.

[0033] The battery diagnostic apparatus may also be configured to invalidate the first diagnostic result if the first diagnostic result is determined to be invalid.

[0034] The battery diagnosis device may also be configured to correct the battery status value using the information about the door status, and re-diagnose whether the battery is abnormal based on the corrected battery status value.

[0035] Here, the battery diagnosis apparatus may be further configured to generate a second diagnosis result if it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery, and output the second diagnosis result as a final diagnosis result.

[0036] The battery diagnostic device may also be configured to determine a duration that the door is open, and to correct the battery status value associated with the internal temperature of the container based on the duration that the door is open.

[0037] The battery diagnosis device may also be configured to determine whether correction of the battery state value is possible based on the amount of change in the battery state value.

[0038] Here, the battery diagnosis device may be further configured to determine that correction of the battery state value cannot be performed if the amount of change in the battery state value exceeds a predetermined threshold value.

[0039] Beneficial Effects

[0040] According to an embodiment of the present disclosure, by outputting a final diagnosis result by verifying the validity of the diagnosis result based on whether the container is opened or closed, the accuracy of battery abnormality diagnosis can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The voltage values ​​monitored during battery charging and discharging are shown.

[0042] Figure 2 The capacity values ​​monitored during battery charging and discharging are shown.

[0043] Figure 3 is a block diagram showing a battery system according to an embodiment of the present invention.

[0044] Figure 4 A container according to an embodiment of the invention is shown.

[0045] Figure 5 is an operational flow chart of a battery diagnosis method according to an embodiment of the present invention.

[0046] Figure 6 is an operation flow chart of a battery diagnosis method according to another embodiment of the present invention.

[0047] Figure 7 is a block diagram of a battery diagnostic apparatus according to an embodiment of the present invention.

[0048] 10: Battery

[0049] 100: Container

[0050] 111, 112: Door

[0051] 120: Door lock

[0052] 200, 700: Battery diagnostic equipment

[0053] 300: Operator terminal DETAILED DESCRIPTION

[0054] The present invention can be modified in various forms and has various embodiments, and its specific embodiments are shown in the drawings by way of example and will be described in detail below. However, it should be understood that it is not intended to limit the present invention to specific embodiments, but rather, the present invention is intended to cover all modifications, equivalents and substitutions that fall within the spirit and technical scope of the present invention. Throughout the description of the drawings, the same reference numerals refer to the same elements.

[0055] It should be understood that although various elements may be described herein using terms such as first, second, A, B, etc., these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present invention. As used herein, the term "and / or" includes a combination of multiple associated listed items or any item in multiple associated listed items.

[0056] It should be understood that when an element is referred to as being "coupled" or "connected" to another element, it can be directly "coupled" or "connected" to the other element, or there may be intervening elements. Conversely, when an element is referred to as being "directly coupled" or "directly connected" to another element, there are no intervening elements.

[0057] The terms used herein are only used for the purpose of describing specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" are intended to also include plural forms, unless the context clearly indicates otherwise. It will be further understood that the terms "comprise", "comprises", "includes", "comprising" and / or "having" when used herein specify the presence of stated features, integers, steps, operations, constituent elements, parts and / or combinations thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, constituent elements, parts and / or combinations thereof.

[0058] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0059] Some terms used herein are defined below.

[0060] The state of charge (SOC) refers to the current state of charge of the battery, expressed in percentage points [%). In addition, the state of health (SOH) may be an indicator of the current state of the battery's aging, expressed in percentage points [%).

[0061] A battery cell is the smallest unit for storing electric power, and a battery module refers to an assembly in which a plurality of battery cells are electrically connected.

[0062] A battery pack or battery rack refers to a system of a single structure assembled by electrically connecting module units, set by a battery manufacturer, and can be monitored and controlled by a battery management device / system (BMS). A battery pack or battery rack may include several battery modules and a battery protection unit or any other protection device.

[0063] A battery bank refers to a group of large battery rack systems configured by connecting multiple racks in parallel. The bank BMS for the battery bank can monitor and control the rack BMS, and each rack BMS manages the battery racks.

[0064] A battery assembly may include a plurality of electrically connected battery cells and refers to an assembly used as a power source by being applied to a specific system or device. Here, a battery assembly may refer to a battery module, a battery pack, a battery rack, or a battery bank, but the scope of the present invention is not limited to these entities.

[0065] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0066] Figure 1 shows the voltage values ​​monitored during battery charging and discharging, and Figure 2 The capacity values ​​monitored during battery charging and discharging are shown.

[0067] The battery testing process may be performed in a manner in which a charging / discharging device repeatedly charges and discharges a battery cell according to predetermined voltage and current conditions and measures electrical characteristics during the charging / discharging process.

[0068] Generally, in order to ensure the safety of a battery testing system when performing a battery charge and discharge test, the state value of the battery is monitored to diagnose an abnormality such as whether a fire occurs.

[0069] For example, a battery diagnostic device provided in a battery system may be configured to monitor one or more status values ​​(such as battery voltage, battery surface temperature, and internal temperature of a container) during a battery charging and discharging process. Here, the battery diagnostic device may determine that an abnormality has occurred in the battery when the voltage and temperature exceed a preset threshold or the difference between the charging capacity and the discharging capacity calculated by the battery status value exceeds a preset reference value.

[0070] In addition, the charge and discharge test is performed while the battery is contained in a container having a certain internal space. If the door of the container is opened or closed during the test, the status value monitored for diagnosis may change.

[0071] Reference Figure 1 From (A) and (B), it can be understood that when the door of the container is opened, the voltage value of the battery changes due to the physical impact generated when the door is opened (t1 and t2).

[0072] In addition, refer to Figure 2 , when the door of the container is opened and closed, outside air flows in during the time period (t3 to t4, t5 to t6) when the door is opened and then closed, and the internal temperature value of the container may fluctuate, so that the calculated charging capacity and discharging capacity vary accordingly.

[0073] As described above, if the battery status value is changed or distorted due to the opening and closing of the container door, the battery diagnostic device may misdiagnose that a problem occurs even if there is no problem with the battery, thus reducing the reliability of the diagnosis result.

[0074] The present invention aims to solve this problem. Figures 3 to 7 Various embodiments of the present invention are described in detail.

[0075] Figure 3 is a block diagram showing a battery system according to an embodiment of the present invention.

[0076] Reference Figure 3 , the battery system may include a plurality of batteries 10 (BAT#1 to BAT#N), a container 100 accommodating the plurality of batteries therein, a battery diagnostic apparatus 200, and an operator terminal 300. In addition, the battery system may further include a charge and discharge device (not shown) electrically connected to the plurality of batteries 10 and performing charge and discharge of the batteries.

[0077] In an embodiment, the battery system according to the present invention may correspond to a battery testing system, but the scope of the present invention is not limited to this entity. For example, the battery diagnostic device 200 according to the present invention may be applied to an energy storage system (ESS) in addition to a battery testing system for evaluating battery performance, and is configured to diagnose battery abnormalities during a battery charging and discharging process.

[0078] The battery 10 according to the present invention may be referred to as a battery cell or a battery assembly.

[0079] The battery diagnostic device 200 may be configured to monitor at least one battery status value while the battery is being charged and discharged, and diagnose whether there is an abnormality in the battery based on the battery status value. Here, the battery status value may include one or more of the voltage, current, surface temperature, and internal temperature of the container of the battery.

[0080] When determining that an abnormality has occurred in the battery, the battery diagnostic device 200 may generate a diagnostic result including one or more of a battery identifier, an abnormality type, and an abnormality occurrence time. Here, the battery diagnostic device 200 may output the generated diagnostic result to the operator terminal 300.

[0081] Operator terminal 300 may correspond to a computing device managed by a manager or operator of the battery system. Operator terminal 300 may be configured to connect to battery diagnostic apparatus 200 via a wired or wireless network, receive diagnostic results from battery diagnostic apparatus 200, and output the diagnostic results via a display device.

[0082] Figure 4 A container according to an embodiment of the invention is shown.

[0083] Reference Figure 4 The container 100 has a certain space inside to accommodate at least one battery, and may be configured to include doors 111 and 112 that can be opened and closed.

[0084] Figure 4 The container 100 shown includes a left door 111 and a right door 112, but the scope of the present invention is not limited to Figure 4 In other words, as long as it is a container including a structure that can be opened and closed, it should be understood as a container according to the present invention, regardless of the number, shape, connection structure or name of the door.

[0085] In an embodiment, the container 100 may further include a door lock 120 that controls whether the door is opened or closed. For example, the door lock 120 may correspond to a digital door lock including an unlock button or a digital input pad that can be input by an operator.

[0086] The container 100 may be configured to include a detection sensor (not shown) capable of sensing the open / closed state of the door. Here, the detection sensor may be included inside the door lock 120, or may be fixedly coupled to a specific area of ​​the doors 111 and 112.

[0087] The battery diagnosis device 200 may be connected to the detection sensor and receive the state information of the door from the detection sensor. Here, the battery diagnosis device 200 may check whether the door is open or closed, the opening time, the closing time, and the opening time period based on the received door state information.

[0088] Figure 5 is an operational flow chart of a battery diagnosis method according to an embodiment of the present invention.

[0089] When charging and discharging of the battery starts, the battery diagnostic device 200 may monitor at least one battery status value during the charging and discharging process (S510). Here, the battery status value may include one or more of the voltage, current, surface temperature, and internal temperature of the container of the battery.

[0090] Thereafter, the battery diagnosis apparatus 200 may diagnose whether there is an abnormality in the battery based on the battery state value ( S520 ).

[0091] If it is determined as a result of the diagnosis that an abnormality has occurred in the battery (Yes in S520), the battery diagnostic apparatus 200 may generate a first diagnostic result (S530). Here, the first diagnostic result may include one or more of an identifier of the battery in which the abnormality has occurred, a type of the abnormality, and a time when the abnormality has occurred.

[0092] Thereafter, the battery diagnosis apparatus 200 may verify the validity of the first diagnosis result based on whether the door provided in the container 100 is opened or closed ( S540 ).

[0093] More specifically, when the first diagnostic result is generated due to battery abnormality, the battery diagnostic device 200 may check information about the door state when collecting the battery state value that is the basis of the first diagnostic result. Here, when it is ensured that the door is in a closed state, the battery diagnostic device 200 may determine the first diagnostic result as valid. In addition, when it is ensured that the door is open, the battery diagnostic device 200 may determine the first diagnostic result as invalid.

[0094] If the first diagnosis result is determined to be valid (Yes in S550 ), the battery diagnosis apparatus 200 may output the first diagnosis result as a final diagnosis result to the operator terminal 300 ( S560 ).

[0095] If the first diagnostic result is determined to be invalid (No in S550), the battery diagnostic device 200 may invalidate the first diagnostic result (S570). In other words, in the case where the first diagnostic result is generated based on the battery state value measured while the door of the container is open, the first diagnostic result may be deemed invalid and may not be output to the operator terminal 300.

[0096] According to the embodiments of the present invention as described above, the validity of the diagnosis result is verified based on whether the door is open or closed, and the final diagnosis result is output to the outside, thereby preventing misdiagnosis due to data change or distortion caused by the door opening.

[0097] Figure 6 is an operation flow chart of a battery diagnosis method according to another embodiment of the present invention.

[0098] When charging and discharging of a battery starts, the battery diagnostic apparatus 200 may monitor at least one battery state value during the charging and discharging process (S610).

[0099] Thereafter, the battery diagnosis apparatus 200 may diagnose whether there is an abnormality in the battery based on the battery state value (S620).

[0100] If it is determined as a result of the diagnosis that an abnormality has occurred in the battery (Yes in S620), the battery diagnostic apparatus 200 may generate a first diagnostic result (S630). Here, the first diagnostic result may include one or more of an identifier of the battery in which the abnormality has occurred, a type of the abnormality, and a time when the abnormality has occurred.

[0101] Thereafter, the battery diagnosis apparatus 200 may verify the validity of the first diagnosis result based on whether the door provided in the container 100 is opened or closed (S640).

[0102] If the first diagnosis result is determined to be valid (Yes in S650 ), the battery diagnosis apparatus 200 may output the first diagnosis result as a final diagnosis result to the operator terminal 300 ( S660 ).

[0103] If the first diagnostic result is determined to be invalid (No in S650 ), the battery diagnostic apparatus 200 may invalidate the first diagnostic result ( S671 ).

[0104] After invalidating the first diagnosis result, the battery diagnosis apparatus 200 may correct the battery status value and re-diagnose whether the battery is abnormal based on the corrected battery status value.

[0105] In an embodiment, the battery diagnostic device 200 may determine whether correction of the battery status value can be performed based on the amount of change in the battery status value (S642). Here, the battery diagnostic device 200 may determine that correction cannot be performed when the amount of change in the battery status value exceeds a preset threshold, and may determine that correction can be performed when the amount of change in the battery status value is equal to or less than the threshold.

[0106] For example, when the container door is opened, a physical impact may be applied to the battery, causing the voltage value of the battery to fluctuate. Here, if the change amount of the voltage value or slope in the voltage curve exceeds a preset threshold, it can be determined that the re-diagnosis based on the correction cannot be performed.

[0107] If it is determined that the battery state value cannot be corrected (No in S672), the final diagnosis result may not be transmitted to the operator terminal 300 due to the invalidity of the first diagnosis result, and the battery diagnosis apparatus 200 may perform the battery monitoring process by returning to S610.

[0108] If it is determined that correction of the battery status value is possible (Yes in S672), the battery diagnostic device 200 may correct the battery status value using information about the door state (S673). Here, the battery diagnostic device 200 may check the duration of the container door opening, and correct the battery status value associated with the internal temperature of the container based on the duration of the container door opening.

[0109] In an embodiment, the battery diagnostic apparatus 200 may correct the battery capacity value based on the relationship between the duration of opening of the container door and the capacity change per unit time (Formula 1).

[0110] [Formula 1]

[0111] d_C=k1*ln(t)+k2

[0112] (Here, d_C is the capacity correction value, t is the temperature inside the container, and k1 and k2 are constants calculated experimentally.)

[0113] More specifically, the battery capacity may be calculated based on the internal temperature of the container. When the container door is opened, outside air flows in and the internal temperature value of the container changes, resulting in a capacity value different from an actual capacity value. Here, the battery diagnostic device 200 may correct the battery capacity value by calculating a capacity correction value based on the duration of door opening (opening retention time) and the above-mentioned formula 1 and adding the calculated capacity correction value to the capacity value before correction.

[0114] For example, when k1 is defined as 0.0047 and k2 is defined as 0.0148, the temperature before the door is opened is 10 degrees, the temperature just before closing after the door is opened is 15 degrees, and the duration of the container door opening is 60 seconds, the capacity correction value can be calculated as follows.

[0115] d_C={(0.0047*ln(10)+0.0148)-(0.0047*ln(15)+0.0148)}*60

[0116] Thereafter, the battery diagnosis apparatus 200 may re-diagnose whether the battery is abnormal based on the battery state value corrected according to S673 ( S674 ).

[0117] When it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery pack (Yes in S674), the battery diagnosis device 200 may generate a second diagnosis result and output the second diagnosis result as a final diagnosis result to the operator terminal 300 (S675). Here, the second diagnosis result may include one or more of an identifier of the battery in which the abnormality has occurred, a type of the abnormality, and a time when the abnormality has occurred.

[0118] When it is determined as a result of the re-diagnosis that no problem has occurred in the battery (No in S674), the first diagnosis result is invalidated, and the final diagnosis result is not transmitted to the operator terminal 300 according to the re-diagnosis result (no abnormality). In addition, the battery diagnosis device 200 may return to S610 and perform the battery monitoring process.

[0119] Figure 7 is a block diagram of a battery diagnostic apparatus according to an embodiment of the present invention.

[0120] The battery diagnostic device 700 according to the embodiment of the present invention may be configured to be included in a battery system or a battery test system. The battery diagnostic device may include at least one processor 710, a memory 720 storing at least one instruction executed by the at least one processor, and a transceiver 730 connected to a network and performing communication.

[0121] At least one instruction may include: an instruction for diagnosing whether a battery is abnormal based on at least one battery status value during a process of charging and discharging the battery; an instruction for generating a first diagnostic result when an abnormality occurs in the battery; an instruction for verifying the validity of the first diagnostic result based on whether a door set on a container for accommodating the battery is open or closed; and an instruction for outputting the first diagnostic result as a final diagnostic result if the first diagnostic result is determined to be valid.

[0122] Instructions for verifying the validity of the first diagnostic result may include: instructions for checking door status information when collecting at least one battery status value; instructions for determining the first diagnostic result as valid when it is confirmed that the door is in a closed state; and instructions for determining the first diagnostic result as invalid when it is confirmed that the door is in an open state.

[0123] The at least one instruction may further include an instruction for invalidating the first diagnostic result if the first diagnostic result is determined to be invalid.

[0124] The instruction for invalidating the first diagnosis result may include: an instruction for correcting a battery status value using information about the door status; and an instruction for re-diagnosing whether the battery is abnormal based on the corrected battery status value.

[0125] Here, the instructions for re-diagnosing whether the battery is abnormal may include: instructions for generating a second diagnosis result if it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery; and instructions for outputting the second diagnosis result as a final diagnosis result.

[0126] The instructions for correcting the battery status value may include: instructions for determining a duration that the door is open; and instructions for correcting the battery status value associated with the internal temperature of the container based on the duration that the door is open.

[0127] The instruction for correcting the battery status value may include an instruction for determining whether correction of the battery status value is possible based on an amount of change in the battery status value.

[0128] Here, the instruction for determining whether correction of the battery state value can be performed may include an instruction for determining that correction of the battery state value cannot be performed if the amount of change in the battery state value exceeds a predetermined threshold value.

[0129] The battery diagnosis apparatus 700 may further include an input interface device 740 , an output interface device 750 , a storage device 760 , etc. The various components included in the battery diagnosis apparatus 700 may be connected through a bus 770 and may be able to communicate with each other.

[0130] Here, the processor 710 may refer to a central processing unit (CPU), a graphics processing unit (GPU), or a dedicated processor on which a method according to an embodiment of the present invention is executed. In addition, the memory (or storage device) may include at least one of a volatile storage medium and a non-volatile storage medium. For example, the memory may include at least one of a read-only memory (ROM) and a random access memory (RAM).

[0131] The operation of the method according to an embodiment of the present invention can be implemented as a computer-readable program or code on a computer-readable recording medium. The computer-readable recording medium includes all types of recording devices having data readable by a computer system stored therein. In addition, the computer-readable recording medium can be distributed in a network-connected computer system to store and execute a computer-readable program or code in a distributed manner.

[0132] Although some aspects of the present invention have been described in the context of equipment, it can also be represented according to the description of the corresponding method, wherein the block or equipment corresponds to the feature of the method step or the method step. Similarly, the aspect described in the context of the method can also represent the feature of the corresponding block or project or the corresponding equipment. Some or all of the method steps can be performed by (or using) hardware devices, such as microprocessors, programmable computers or electronic circuits. In some embodiments, one or more of the most important method steps can be performed by such equipment.

[0133] In the foregoing, the present invention has been described with reference to exemplary embodiments thereof, but those skilled in the art will appreciate that various corrections and changes may be made to the present invention within the scope without departing from the spirit and scope of the invention described in the appended claims.

Claims

1. A battery diagnostic device located in a battery system, the battery diagnostic device comprising: at least one processor; as well as a memory configured to store at least one instruction executed by the at least one processor; The at least one instruction includes: instructions for diagnosing whether the battery is abnormal based on at least one battery status value during a process of charging and discharging the battery; instructions for generating a first diagnosis result in the event that an abnormality occurs in the battery; instructions for verifying validity of the first diagnostic result based on whether a door provided on a container accommodating the battery is open or closed; and Instructions for outputting the first diagnosis result as a final diagnosis result if the first diagnosis result is determined to be valid.

2. The battery diagnostic device according to claim 1, wherein: The instruction for verifying the validity of the first diagnostic result includes: instructions for checking information regarding a door status while collecting the at least one battery status value; instructions for determining the first diagnostic result as valid if the door is confirmed to be in a closed state; and Instructions for determining the first diagnostic result as invalid if it is confirmed that the door is in an open state.

3. The battery diagnostic device according to claim 1, wherein: The at least one instruction also includes instructions for invalidating the first diagnostic result if the first diagnostic result is determined to be invalid.

4. The battery diagnostic device according to claim 3, wherein: The instruction for invalidating the first diagnostic result includes: instructions for correcting the battery status value using the information about the door status; and Instructions for re-diagnosing whether the battery is abnormal based on the corrected battery status value.

5. The battery diagnostic device according to claim 4, wherein: The instruction for re-diagnosing whether the battery is abnormal includes: instructions for generating a second diagnosis result if it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery; and An instruction for outputting the second diagnosis result as a final diagnosis result.

6. The battery diagnostic device according to claim 4, wherein: The instructions for correcting the battery status value include: instructions for determining a duration that the door is open; and Instructions for correcting a battery status value associated with an internal temperature of the container based on the duration that the door is open.

7. The battery diagnostic device according to claim 4, wherein: The instructions for correcting the battery status value include instructions for determining whether correction of the battery status value is possible based on an amount of change in the battery status value.

8. The battery diagnostic device according to claim 7, wherein: The instructions for determining whether the correction of the battery state value can be performed include instructions for determining that the correction of the battery state value cannot be performed if the amount of change in the battery state value exceeds a predetermined threshold.

9. A battery diagnosis method performed by a battery diagnosis device located in a battery system, the battery diagnosis method comprising the following steps: During the process of charging and discharging the battery, diagnosing whether the battery is abnormal based on at least one battery status value; generating a first diagnosis result in case an abnormality occurs in the battery; verifying validity of the first diagnostic result based on whether a door disposed on a container accommodating the battery is open or closed; as well as In a case where the first diagnosis result is determined to be valid, the first diagnosis result is output as a final diagnosis result.

10. The battery diagnosis method according to claim 9, wherein: The step of verifying the validity of the first diagnostic result comprises the following steps: checking information regarding a door status while collecting the at least one battery status value; In the case where it is confirmed that the door is in a closed state, determining the first diagnosis result as valid; and In a case where it is confirmed that the door is in the open state, the first diagnosis result is determined to be invalid.

11. The battery diagnosis method according to claim 9, further comprising the following steps: In the case where the first diagnosis result is determined to be invalid, the first diagnosis result is invalidated.

12. The battery diagnosis method according to claim 11, wherein: The step of invalidating the first diagnosis result comprises the following steps: correcting the battery status value using information about the door status; and Whether the battery is abnormal is re-diagnosed based on the corrected battery state value.

13. The battery diagnosis method according to claim 12, wherein: The step of re-diagnosing whether the battery is abnormal comprises the following steps: generating a second diagnosis result in a case where it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery; and The second diagnosis result is output as the final diagnosis result.

14. The battery diagnosis method according to claim 12, wherein: The step of correcting the battery status value comprises the following steps: determining a duration that the door is open; and A battery status value associated with an internal temperature of the container is corrected based on the duration that the door is open.

15. The battery diagnosis method according to claim 12, wherein: The step of correcting the battery state value includes the step of determining whether correction of the battery state value is possible based on the amount of change in the battery state value.

16. The battery diagnosis method according to claim 15, wherein: The step of determining whether correction of the battery state value is possible includes the step of determining that correction of the battery state value is not possible if the amount of change in the battery state value exceeds a predetermined threshold.

17. A battery testing system configured to test a battery by charging and discharging the battery, the battery testing system comprising: a container that houses the battery and includes an openable door; as well as a battery diagnostic device configured to diagnose whether the battery is abnormal based on at least one battery status value during a process of charging and discharging the battery, Wherein, the battery diagnostic device: generates a first diagnostic result when an abnormality occurs in the battery, verifies the validity of the first diagnostic result based on whether the door set on the container accommodating the battery is open or closed, and outputs the first diagnostic result as a final diagnostic result when the first diagnostic result is determined to be valid.

18. The battery testing system according to claim 17, wherein: The battery diagnostic device is further configured to: checking information regarding a door status while collecting the at least one battery status value; In the case where it is confirmed that the door is in a closed state, determining the first diagnosis result as valid; In a case where it is confirmed that the door is in the open state, the first diagnosis result is determined to be invalid.

19. The battery testing system according to claim 17, wherein: The battery diagnostic device is further configured to: In the case where the first diagnosis result is determined to be invalid, the first diagnosis result is invalidated.

20. The battery testing system according to claim 19, wherein: The battery diagnosis device is further configured to correct the battery status value using information about the door status, and re-diagnose whether the battery is abnormal based on the corrected battery status value.

21. The battery testing system according to claim 20, wherein: The battery diagnostic apparatus is further configured to generate a second diagnostic result if it is determined as a result of the re-diagnosis that an abnormality has occurred in the battery, and output the second diagnostic result as a final diagnostic result.

22. The battery testing system according to claim 20, wherein: The battery diagnostic device is further configured to determine a duration of time that the door is open, and to correct a battery status value associated with an internal temperature of the container based on the duration of time that the door is open.

23. The battery testing system according to claim 20, wherein: The battery diagnosis device is further configured to determine whether correction of the battery state value is possible based on the amount of change in the battery state value.

24. The battery testing system according to claim 23, wherein: The battery diagnosis device is further configured to determine that the correction of the battery state value cannot be performed if the amount of change in the battery state value exceeds a predetermined threshold.

Images