Method for checking the communication status and a battery management system for doing so.

Abstract

A method for checking the communication status of a battery management system that communicates with an external battery management system is disclosed, and a battery management system that performs this check, is disclosed, which includes the steps of: receiving an optical signal containing communication information transmitted from an external battery management system through a light receiving unit including a plurality of optical sensors arranged in a symmetrical structure around a reference point; confirming one or more optical sensors among the plurality of optical sensors that have received the optical signal; and checking the communication status with the external battery management system based on the result of the confirmation.

Description

Technical Field

[0001] The present disclosure relates to a method for checking a communication state and a battery management system for performing the same.

Background Art

[0002] The communication process between a battery management system and an external battery system is performed through a process of measuring the state of a battery module and exchanging control signals related thereto. At this time, the mainly used communication method includes an optical communication method using a light emitting element such as a light emitting diode. At this time, various studies are being conducted to diagnose the communication state between the battery management system and the external battery management system that are physically separated from each other and to quickly and accurately grasp a solution when the communication is not smooth.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The technical problems to be achieved by the present embodiment are not limited to the above technical problems, and other technical problems can be analogized from the following embodiments.

Means for Solving the Problems

[0004] A method for checking the communication state of a battery management system communicating with an external battery management system according to an embodiment may include receiving an optical signal having communication information transmitted from the external battery management system through a light receiving unit including a plurality of optical sensors arranged in a symmetric structure centered on a reference point; identifying one or more optical sensors that have received the optical signal among the plurality of optical sensors; and checking the communication state with the external battery management system based on the identified result.

[0005] The step of checking the communication status may include determining that the communication status between the battery management system and the external battery management system is normal when the optical signals are received from all of the plurality of optical sensors.

[0006] The step of checking the communication status may include determining that the communication status between the battery management system and the external battery management system is in a state of poor signal strength if signals are received from one or more of the plurality of optical sensors, which is fewer than the total number of optical sensors, and the arrangement of the one or more optical sensors is symmetrical with respect to the reference point.

[0007] A method for inspection according to one embodiment further includes the step of transmitting control information including a notification of the communication status, the control information may include information regarding the adjustment of the intensity of optical signals between the battery management system and the external battery management system and information regarding the adjustment of the distance between the battery management system and the external battery management system.

[0008] The step of checking the communication status may include determining that the communication status between the battery management system and the external battery management system is misaligned if a signal is received from one or more of the plurality of optical sensors and the arrangement of the one or more optical sensors is asymmetrical with respect to the reference point.

[0009] A method for inspection according to one embodiment further includes the step of transmitting control information including a notification of the communication status, wherein the control information may include information regarding angle adjustment between the light receiving unit of the battery management system and the light-emitting unit of the external battery management system.

[0010] A method for inspection according to one embodiment may further include the steps of: obtaining an average value of the intensity of the optical signals received from each of the one or more optical sensors; and analyzing the communication information based on the average value.

[0011] The step of analyzing the communication information may include the step of converting the type of optical signal from an analog signal type to a digital signal type.

[0012] An electronic device for checking the communication status of a battery management system that communicates with an external battery management system according to one embodiment may include: a light receiving unit that receives an optical signal having communication information transmitted from the external battery management system through a plurality of optical sensors arranged in a symmetrical structure around a reference point; a light emitting unit that transmits an optical signal to the external battery management system; and a control unit that checks one or more of the plurality of optical sensors that have received the optical signal, and checks the communication status with the external battery management system based on the result of the check.

[0013] Further details of the embodiments are included in the detailed description and drawings. [Effects of the Invention]

[0014] By following the method for checking the communication status of the battery management system described in this disclosure, it is possible to determine whether the communication status between the battery management system and the external battery management system is in a faulty state, whether the faulty state is due to signal strength between the battery management systems or a problem with the alignment status between the battery management systems, and to determine appropriate measures to be taken in response.

[0015] Furthermore, by following the method described herein, data can be acquired not only from a single optical signal used for communication between battery management systems, but also from multiple optical signals, potentially enabling the recovery of original data with even higher accuracy compared to wireless communication using a single optical signal.

[0016] The effects of the various embodiments of this disclosure are not limited to those described herein, and any further effects not mentioned may be clearly understood by those skilled in the art from the description of the claims. [Brief explanation of the drawing]

[0017] [Figure 1] This is a diagram illustrating the concept of a system for communication between battery management systems according to one embodiment. [Figure 2a] This diagram illustrates the general concept of a method for checking the communication status between battery management systems according to one embodiment. [Figure 2b] This diagram illustrates the general concept of a method for checking the communication status between battery management systems according to one embodiment. [Figure 3] This is a flowchart illustrating a method for checking the communication status according to one embodiment. [Figure 4] This is an illustrative diagram illustrating the state of the light-receiving unit in a method for checking the communication status according to one embodiment. [Figure 5] This is a flowchart illustrating the processing process of optical signals received from multiple optical sensors in a method for checking the communication status according to one embodiment. [Figure 6] A block diagram of a battery management system according to one embodiment is shown. [Modes for carrying out the invention]

[0018] The terminology used in the embodiments has been selected, to the greatest extent possible, to be common and widely used terms, taking into account the function described herein, although this may change depending on the intent of the articulators, case law, the emergence of new technologies, etc. In certain cases, the applicant may have arbitrarily selected some terms, in which case their meaning will be described in detail in the relevant descriptive section. Therefore, the terminology used in this disclosure must be defined not merely as names of terms, but based on the meaning of the term and the overall content of this disclosure.

[0019] Throughout the specification, when a part states that a certain component "includes" something, this means that, unless otherwise stated to the contrary, it does not exclude other components and may further include other components.

[0020] The expression "at least one of a, b, and c" described throughout this specification can include "a alone", "b alone", "c alone", "a and b", "a and c", "b and c", or "all of a, b, and c".

[0021] The "terminal" referred to below can be embodied as a computer or a portable terminal that can be connected to a server or other terminals through a network. Here, the computer can include, for example, a notebook computer equipped with a web browser (WEB Browser), a desktop, a laptop, etc., and the portable terminal can include, for example, as a wireless communication device with portability and mobility guaranteed, all types of handheld-based wireless communication devices such as communication base terminals like IMT (International Mobile Telecommunication), CDMA (Code Division Multiple Access), W-CDMA (W-Code Division Multiple Access), LTE (Long Term Evolution), smartphones, tablet PCs, etc.

[0022] Hereinafter, with reference to the accompanying drawings, embodiments of the present disclosure will be described in detail so that those having ordinary knowledge in the technical field to which the present disclosure belongs can easily implement them. However, the present disclosure can be embodied in multiple different forms and is not limited to the embodiments described here.

[0023] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings.

[0024] Figure 1 is a diagram illustrating the concept of a system for checking the communication status of battery management systems between battery management systems according to one embodiment.

[0025] Referring to Figure 1, a system 101 that performs a method for checking the communication status of a battery management system 100 according to one embodiment may include a battery management system 100 that checks the communication status and an external battery management system 200 that communicates with the battery management system 100.

[0026] This disclosure relates to maintaining the communication state between a battery management system 100 and an external battery management system 200. More specifically, the light-emitting unit 130 of the battery management system 100 according to this disclosure can transmit an optical signal to the external battery management system 200 using one or more optical sensors. In addition, the light-receiving unit 110 of the battery management system 100 can receive an optical signal from the external battery management system 200 using multiple optical sensors arranged in a symmetrical structure around a reference point.

[0027] Through this, when wireless communication is performed between the battery management system 100 and the external battery management system 200, the position and number of sensors that react in the multiple optical sensors of the light receiving unit 110 of the battery management system 100 can be identified, and it is possible to confirm whether the arrangement of the light emitting unit 230 of the external battery management system 200 and the light receiving unit 110 of the battery management system 100 is aligned in a straight line, and wireless communication can be maintained even if the arrangement between them is not in a straight line and is misaligned. In addition, even if the intensity of the optical signal emitted from the light emitting unit 230 of the external battery management system 200 becomes weak, the problem of wireless communication between the battery management system 100 and the external battery management system 200 can be reduced because the light receiving unit 110 of the battery management system 100 includes multiple optical sensors. Furthermore, since the light receiving unit 110 of the battery management system 100 receives the optical signal emitted from the light emitting unit 230 of the external battery management system 200 through multiple optical sensors rather than one optical sensor, the average value of the multiple optical signals can be used for data reconstruction, thereby increasing the accuracy of the data reconstructed from the optical signals.

[0028] Figures 2a and 2b are diagrams illustrating the general concept of a method for checking the communication status between battery management systems according to one embodiment.

[0029] Referring to Figure 2a, we can see a conventional method 201 for communication between battery management systems. According to the conventional method 201, in many cases, the light receiving unit 110 of the battery management system 100 consists of a single optical sensor. When an optical signal is transmitted from the light-emitting unit 230 of the external battery management system 200 and reaches the light receiving unit 110 of the battery management system 100, if the light-emitting unit 230 of the external battery management system 200 and the light receiving unit 110 of the battery management system 100 are not aligned in a straight line, the transmission of the optical signal may not occur correctly. In addition, if the signal strength of the optical signal transmitted from the light-emitting unit 230 of the external battery management system 200 is weak, it is difficult to take appropriate action and to identify the cause of the communication failure. Furthermore, when the light receiving unit 110 uses a single optical sensor, there is a problem that the accuracy of data transmission may be low based on a single optical signal.

[0030] Referring to Figure 2b, a method 202 for checking the communication status between battery management systems according to one embodiment can be seen.

[0031] Method 202 according to one embodiment allows for the identification of one or more optical sensors that have received an optical signal from among the multiple optical sensors 115, which are arranged in a symmetrical structure around a reference point 116, through the light-receiving unit 110 of the battery management system 100. Furthermore, the arrangement of the multiple optical sensors 115 arranged in a symmetrical structure allows for the confirmation of whether the communication state between the battery management system 100 and the external battery management system 200 is normal, and if the communication state between the battery management system 100 and the external battery management system 200 is poor, the reason for the poor communication state can be confirmed. Furthermore, the measures necessary to resolve the cause of the poor state can be determined.

[0032] Furthermore, when an optical signal transmitted from the light-emitting unit 230 of the external battery management system 200 is received by the light-receiving unit 110 of the battery management system 100, which includes multiple optical sensors 115, one or more of the optical sensors 115 may react, generating a large number of identical optical signals (e.g., analog signals). The battery management system 100 can obtain a single average value by averaging the large number of received analog signals, which may enable more accurate data recovery than when analyzing communication information and using only one optical sensor.

[0033] In this disclosure, since the light-receiving unit 210 of the external battery management system 200 receives optical signals through the light-emitting unit 130 of the battery management system 100, the structure of the light-receiving unit 210 of the external battery management system 200 may also include a plurality of optical sensors arranged in a symmetrical structure around a specific reference point, similar to the structure of the light-receiving unit 110 of the battery management system 100 mentioned above. Considering the symmetrical relationship between the battery management system 100 and the external battery management system 200, this disclosure will be based on the battery management system 100.

[0034] Figure 3 is a flowchart illustrating a method for checking the communication status according to one embodiment.

[0035] Referring to Figure 3, in step 310, the battery management system 100 according to one embodiment can receive an optical signal containing communication information transmitted from the external battery management system 200 through a light receiving unit 110 which includes a plurality of optical sensors 115 arranged in a symmetrical structure centered on a reference point 116. At this time, the battery management system 100 can acquire optical signals from one or more optical sensors included in the plurality of optical sensors 115, and the type of optical signal may be analog. Furthermore, the battery management system 100 can reconstruct the data with even greater precision by considering all the acquired optical signal values, which will be examined in detail in Figure 5.

[0036] In step 320, the battery management system 100 according to one embodiment can identify one or more of the multiple optical sensors 115 that have received an optical signal. For example, the battery management system 100 can identify one or more optical sensors that have received an optical signal and confirm their arrangement. For example, the battery management system 100 can confirm that all of the multiple optical sensors 115 have received an optical signal, or it can confirm that only some of the multiple optical sensors 115 have received an optical signal. Various cases of this will be specifically examined in Figure 4 below.

[0037] In step 330, the battery management system 100 according to one embodiment can check the communication status with the external battery management system 200 based on the confirmed results. If the battery management system 100 determines that the communication status between the battery management system 100 and the external battery management system 200 is normal based on the checked communication status, In addition If the system determines that the communication status is in a communication failure state due to certain reasons, it can provide a notification and information regarding appropriate measures. For example, if it determines that the communication status is in a communication failure state, the battery management system 100 can provide a notification via sound or light, or it can provide a notification to the automotive electronic control unit or an external server.

[0038] Figure 4 is an illustrative diagram illustrating the state of the light receiving unit in a method for checking the communication status according to one embodiment.

[0039] Referring to Figure 4, we can see that multiple light sensors 115 are arranged in a symmetrical structure centered on the reference point 116. In Figure 4, a 4x4 square structure centered on the reference point 116 is shown as an example of multiple light sensors 115, but the structure of the multiple light sensors 115 is not limited to the above case, and the structure of the multiple light sensors 115 may have, for example, a square structure of 2x2 or larger or a circular structure.

[0040] For example, referring to the signal input state 410, the signal input state 410 may correspond to the case where all of the optical sensors 115 that received an optical signal from the external battery management system 200 have received the optical signal. In this case, the battery management system 100 can confirm that all of the optical sensors 115 have received the optical signal, as explained in step 320 of Figure 3, and can determine that the communication state between the battery management system 100 and the external battery management system 200 is normal.

[0041] For example, referring to signal input state 420, signal input state 420 may correspond to a case where signals are received from one or more optical sensors, fewer than the total number of optical sensors, among the multiple optical sensors 115 that receive optical signals from the external battery management system 200, and the arrangement of the one or more optical sensors that received signals is symmetrical with respect to the reference point 116. In this case, as explained in step 320 of Figure 3, the battery management system 100 can confirm that some of the multiple optical sensors 115 receive optical signals and that their arrangement is symmetrical with respect to the reference point 116. This may correspond to a case where the alignment of the light-emitting unit 230 of the external battery management system 200 that transmits optical signals and the light-receiving unit 110 of the battery management system 100 that receives optical signals is on a straight line with respect to the reference point 116, but the intensity of the optical signal is not strong enough for all of the multiple optical sensors 115 that receive optical signals to receive the signal. As a result, the battery management system 100 can determine that the communication state between the battery management system 100 and the external battery management system 200 is a state of poor signal strength. Furthermore, the battery management system 100 can transmit control information including notifications regarding the communication status, information regarding the adjustment of the intensity of the optical signal between the battery management system 100 and the external battery management system 200, and information regarding the adjustment of the distance between the battery management system 100 and the external battery management system 200. Through this, the battery management system 100 can provide an opportunity for maintenance and management of the communication system before a communication failure occurs between the battery management system 100 and the external battery management system 200.

[0042] For example, referring to signal input state 430, signal input state 430 may correspond to a case where signals are received from one or more optical sensors, fewer than the total number of optical sensors, among the multiple optical sensors 115 that receive optical signals from the external battery management system 200, and the arrangement of the one or more optical sensors that received signals is asymmetrical with respect to the reference point 116. In this case, as explained in step 320 of Figure 3, the battery management system 100 can confirm that some of the multiple optical sensors 115 receive optical signals and that their arrangement is asymmetrical with respect to the reference point 116. This means that the alignment of the light-emitting unit 230 of the external battery management system 200 that transmits optical signals and the light-receiving unit 110 of the battery management system 100 that receives optical signals is not located on a straight line with respect to the reference point 116, and therefore may correspond to a case where the alignment between the battery management system 100 and the external battery management system 200 is poor. As a result, the battery management system 100 can determine that the communication state between the battery management system 100 and the external battery management system 200 is in a state of poor alignment. Furthermore, the battery management system 100 can transmit control information including notifications regarding the communication status and information regarding angle adjustment between the light receiving unit 110 of the battery management system 100 and the light-emitting unit 230 of the external battery management system 200. Through this, the battery management system 100 can provide an opportunity to readjust the battery management system 100 and the external battery management system 200.

[0043] Figure 5 is a flowchart illustrating the processing process of optical signals received from multiple optical sensors in a method for checking the communication status according to one embodiment.

[0044] Referring to Figure 5, in step 310, the battery management system 100 according to one embodiment can, after receiving an optical signal, acquire the average value of the intensity of the optical signal received from each of the one or more optical sensors in step 340. Through this, the battery management system 100 can acquire data with even higher conversion accuracy by utilizing a single average value of the intensity of the optical signal received from each optical sensor to restore the data, unlike when the light receiving unit 110 uses an optical signal received through one optical sensor and the accuracy of conversion to the original data may be low due to noise, communication distance, external fault elements, etc. The operation in step 340 of the battery management system 100 can be performed simultaneously with step 320, in which the operation in step 320 confirms one or more optical sensors that received the optical signal after receiving the optical signal in step 310, as discussed in Figure 3. Furthermore, the battery management system 100 can perform the operation in step 340 before or after step 320, but is not limited to the specific cases mentioned in the embodiments of this disclosure.

[0045] In step 320, the battery management system 100 according to one embodiment can analyze communication information based on the average value. At this time, the step of analyzing communication information may include a step of converting the received optical signal from analog signal form to digital signal form (analog to digital convert, ADC). Thereafter, before transmitting the optical signal to the external battery management system 200, the battery management system 100 can convert the optical signal from digital signal form back to analog signal form (digital to analog convert, DAC) and transmit the optical signal to the external battery management system 200.

[0046] Figure 6 shows a block diagram of a battery management system according to one embodiment.

[0047] Referring to Figure 6, a battery management system 100 according to one embodiment may include a light receiving unit 110 that receives an optical signal containing communication information transmitted from an external battery management system 200 through a plurality of optical sensors arranged in a symmetrical structure around a reference point, a light emitting unit 130 that transmits an optical signal to the external battery management system 200, and a control unit 120 that checks one or more optical sensors that have received an optical signal from among the plurality of optical sensors and checks the communication status with the external battery management system based on the results of the check. Only the components relating to this embodiment are shown in the battery management system 100 illustrated in Figure 6. Therefore, a person with ordinary skill in the art relating to this embodiment will understand that in addition to the components illustrated in Figure 6, other general-purpose components may be included.

[0048] In one embodiment, the light-receiving unit 110 can receive an optical signal containing communication information transmitted from an external battery management system through a plurality of optical sensors arranged in a symmetrical structure around a reference point. Each of the optical sensors included in the light-receiving unit 110 may be an optical diode, for example, a semiconductor diode having a function such as a photodetector. Since the optical diode has a PN junction or PIN structure, when light with sufficient photon energy strikes the optical diode, it can generate a photocurrent through electronic activity via the generation of mobile electrons and positively charged holes.

[0049] In one embodiment, the light-emitting unit 130 can transmit an optical signal containing communication information to an external battery management system 200. Similar to the light-receiving unit 110 described above, the light-emitting unit 130 may include one or more optical sensors, which are semiconductor diodes having functions such as photodetectors.

[0050] In one embodiment, the control unit 120 may be configured to check one or more optical sensors that have received an optical signal from among a plurality of optical sensors, and to check the communication status with the external battery management system based on the result of the check. For example, the control unit 120 can control the battery management system 100 to determine that the communication status between the battery management system and the external battery management system is normal if optical signals are received from all of the plurality of optical sensors. For example, the control unit 120 can control the battery management system 100 to determine that the communication status between the battery management system and the external battery management system is in a signal strength poor state if signals are received from one or more optical sensors that are fewer than the total number of optical sensors, and the arrangement of one or more optical sensors is symmetrical around a reference point. For example, the control unit 120 can control the battery management system 100 to transmit control information including a notification regarding the communication status, in which case the control information may include information regarding the adjustment of the intensity of the optical signal between the battery management system and the external battery management system and information regarding the adjustment of the distance between the battery management system and the external battery management system. For example, the control unit 120 can control the battery management system 100 to determine that the communication state between the battery management system and the external battery management system is misaligned if signals are received from one or more of the multiple light sensors and the arrangement of one or more light sensors is asymmetrical around a reference point. For example, the control unit 120 can control the battery management system 100 to transmit control information including a notification regarding the communication state, in which case the control information may include information regarding angle adjustment between the light receiving unit of the battery management system and the light emitting unit of the external battery management system. The control unit 120 can also control the battery management system 100 to obtain the average value of the intensity of the light signals received from each of the one or more light sensors and analyze the communication information based on the average value.At this time, the control unit 120 can control the battery management system 100 to analyze the communication status through the step of converting the optical signal from analog signal form to digital signal form.

[0051] The battery management system 100 according to the embodiment described above may include a memory for storing and executing program data, a permanent storage unit such as a disk drive, a communication port for communicating with external devices, and user interface devices such as a touch panel, keys, and buttons. Methods embodied in software modules or algorithms may be stored on a computer-readable recording medium as computer-readable code or program instructions executable on the control unit. Here, computer-readable recording media include magnetic recording 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)). Computer-readable recording media may be distributed across computer systems connected to a network, and computer-readable code may be stored and executed in a distributed manner. The medium is computer-readable, stored in memory, and can be executed in the control unit.

[0052] This embodiment can be described as a functional block configuration and various processing stages. Such a functional block can be embodied in a variety of hardware and / or software configurations that perform a particular function. For example, the embodiment may employ an integrated circuit configuration such as memory, processing, logic, look-up tables, etc., which can perform various functions under the control of one or more microprocessors or other control devices. Just as the components can be executed by software programming or software elements, this embodiment includes a variety of algorithms embodied in combinations of data structures, processes, routines, or other programming configurations, which can be embodied in programming or scripting languages ​​such as C, C++, Java, assembler, etc. The functional aspects can be embodied in algorithms executed on one or more processors. Furthermore, this embodiment can employ prior art for electronic environment configuration, signal processing, and / or data processing, etc. Terms such as “mechanism,” “element,” “means,” and “configuration” can be used broadly and are not limited to mechanical and physical configurations. The terms can also include the meaning of a series of software processes (routines) in conjunction with a processor, etc.

[0053] The embodiments described above are merely illustrative examples, and other embodiments may be embodied within the scope of the claims described later.

Claims

1. In a method for checking the communication status of a battery management system that communicates with an external battery management system, The process involves receiving an optical signal containing communication information transmitted from the external battery management system through a light-receiving unit that includes a plurality of optical sensors arranged in a symmetrical structure centered on a reference point, The step of identifying one or more of the aforementioned multiple optical sensors that have received the optical signal, This includes the step of checking the communication status with the external battery management system based on the results of the above check, How to inspect it.

2. The step of checking the aforementioned communication status is: When the optical signals are received from all of the aforementioned optical sensors, This includes the step of determining that the communication status between the battery management system and the external battery management system is normal. The method according to claim 1.

3. The step of checking the aforementioned communication status is: If signals are received from one or more of the aforementioned multiple light sensors, which is fewer than the total number of light sensors, and the arrangement of the one or more light sensors is symmetrical with respect to the reference point, This includes the step of determining that the communication status between the battery management system and the external battery management system is in a state of poor signal strength. The method according to claim 1.

4. The step further includes transmitting control information, including a notification regarding the aforementioned communication status, The control information is, This includes information regarding the adjustment of the intensity of optical signals between the battery management system and the external battery management system, and information regarding the adjustment of the distance between the battery management system and the external battery management system. The method according to claim 3.

5. The step of checking the aforementioned communication status is: If a signal is received from one or more of the aforementioned multiple light sensors, and the arrangement of the one or more light sensors is asymmetrical with respect to the reference point, The step includes determining that the communication status between the battery management system and the external battery management system is in a misaligned state. The method according to claim 1.

6. The step further includes transmitting control information, including a notification regarding the aforementioned communication status, The control information is, This includes information regarding angle adjustment between the light-receiving unit of the battery management system and the light-emitting unit of the external battery management system, The method according to claim 5.

7. The steps include obtaining the average value of the intensity of the light signals received from each of the one or more light sensors, The step further includes analyzing the communication information based on the average value, The method according to claim 1.

8. The step of analyzing the aforementioned communication information is: The process includes converting the optical signal from an analog signal to a digital signal. The method according to claim 7.

9. A computer-readable non-temporary recording medium that stores a program for causing a server to execute the method according to any one of claims 1 to 8.

10. In an electronic device for checking the communication status of a battery management system that communicates with an external battery management system, A light receiving unit that receives an optical signal containing communication information transmitted from the external battery management system through a plurality of optical sensors arranged in a symmetrical structure centered on a reference point, A light-emitting unit that transmits an optical signal to the external battery management system, Among the plurality of optical sensors, one or more optical sensors that received the optical signal are identified. Includes a control unit that checks the communication status with the external battery management system based on the results of the above check, Battery management system.

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