Patent Publication Number: US-2022232110-A1

Title: Apparatus and method for providing battery information

Description:
TECHNICAL FIELD 
     The present application claims priority to Korean Patent Application No. 10-2020-0023906 filed on Feb. 26, 2020 in the Republic of Korea, the disclosures of which are incorporated herein by reference. 
     The present disclosure relates to an apparatus and method for providing battery information capable of providing battery information received from a battery management system. 
     BACKGROUND ART 
     Recently, the demand for portable electronic products such as notebook computers, video cameras and portable telephones has increased sharply, and electric vehicles, energy storage batteries, robots, satellites and the like have been developed in earnest. Accordingly, high-performance batteries allowing repeated charging and discharging are being actively studied. 
     Batteries commercially available at present include nickel-cadmium batteries, nickel hydrogen batteries, nickel-zinc batteries, lithium batteries and the like. Among them, the lithium batteries are in the limelight since they have almost no memory effect compared to nickel-based batteries and also have very low self-charging rate and high energy density. 
     In general, in order to optimally manage such a battery, a battery management system (BMS) is provided in a battery pack. The battery management system may diagnose the state of the battery by monitoring voltage, current or the like of the battery. For example, the battery management system may diagnose whether the battery is in an overcharge or overdischarge state. In addition, the battery management system may perform balancing among a plurality of batteries, and may control an operation state of a relay provided in the battery pack. 
     The battery management system may communicate using a controller area network (CAN) communication protocol or a Modbus TCP communication protocol, and may transmit battery state information and battery diagnosis information (e.g., error information) to a monitoring device. 
     Here, the CAN communication protocol is a communication protocol that allows the battery management system to transmit battery-related information even if there is no separate request from the monitoring device, since it does not employ a request-response method. Meanwhile, the Modbus TCP communication protocol is a communication protocol that allows the battery management system to transmit corresponding battery-related information only when there is an information request from the monitoring device, since it adopts the request-response method. 
       FIG. 1  is a diagram schematically showing an example where a conventional battery management system and a monitoring device make communication using a CAN communication protocol.  FIG. 2  is a diagram schematically showing an example where a conventional battery management system and a monitoring device make communication using a Modbus TCP communication protocol. 
     Referring to  FIG. 1 , when the battery management system and the monitoring device communicate using the CAN communication protocol, if the battery management system detects an error in the battery, an error message may be transmitted to the monitoring device even if there is no separate request from the monitoring device. 
     Meanwhile, referring to  FIG. 2 , if the battery management system and the monitoring device communicate using the Modbus TCP communication protocol, the battery management system may transmit a corresponding response only when there is an information provision request of the monitoring device, so a longer time may be taken for the monitoring device to detect an error, compared to the case of  FIG. 1 . 
     Therefore, when communication is performed with the battery management system using only the Modbus TCP communication protocol, there is a problem in that it may be delayed to provide information that is important in real-time response, such as battery diagnosis information. 
     In addition, in general, the data transmission speed (Mbps, megabits per second) of the CAN communication protocol may be slower than the data transmission speed of the Modbus TCP communication protocol. In this case, if communication is performed with the battery management system using only the CAN communication protocol, there is a problem in that the waste of system resources required for communication of battery state information (e.g., voltage, current, temperature, SOC (State Of Charge) and/or SOH (State Of Health), or the like) may become severe. 
     DISCLOSURE 
     Technical Problem 
     The present disclosure is designed to solve the problems of the related art, and therefore the present disclosure is directed to providing an apparatus and method for providing battery information capable of obtaining battery information from a battery management system using both a CAN communication protocol and a Modbus TCP communication protocol. 
     These and other objects and advantages of the present disclosure may be understood from the following detailed description and will become more fully apparent from the exemplary embodiments of the present disclosure. Also, it will be easily understood that the objects and advantages of the present disclosure may be realized by the means shown in the appended claims and combinations thereof. 
     Technical Solution 
     In one aspect of the present disclosure, there is provided an apparatus for providing battery information, comprising: a first communication unit configured to receive first battery information related to a battery from a battery management system by using a first communication protocol; a second communication unit configured to receive second battery information related to the battery and different from the first battery information from the battery management system by using a second communication protocol different from the first communication protocol; and a data conversion unit connected to the first communication unit and the second communication unit and configured to obtain first conversion information by converting the first battery information into a predetermined data structure, obtain second conversion information by converting the second battery information into the predetermined data structure and output the first conversion information and the second conversion information. 
     The predetermined data structure may be configured as a structure including at least one of a target information field, an identification information field and a value field. 
     The data conversion unit may be configured to convert the first battery information and the second battery information to correspond to the predetermined data structure. 
     An apparatus for providing battery information according to another aspect of the present disclosure may further comprise a storage unit configured to receive and store the first conversion information and the second conversion information from the data conversion unit. 
     The data conversion unit may be configured to store conversion information corresponding to the target information in the storage unit to be associated with each other. 
     The first communication unit may be configured to receive the first battery information corresponding to an information provision request for the first battery information from the battery management system, only when the information provision request is sent to the battery management system. 
     The first communication unit may be configured to send the information provision request for the first battery information, at every predetermined cycle or only when there is a request of the data conversion unit. 
     The second communication unit may be configured to receive the second battery information from the battery management system by using the second communication protocol, even though an information provision request for the second battery information is not sent to the battery management system. 
     The first battery information may be distinguished from the second battery information based on a capacity and be configured to have a larger capacity than the second battery information. 
     The first battery information may be battery state information including at least one of voltage, current, temperature, SOC and SOH of the battery. 
     The second battery information may include at least one of battery system information, battery diagnosis information and battery-related control information. The data conversion unit may be configured to send a request for the first battery information corresponding to the second conversion information to the first communication unit, when the identification information of the second conversion information meets a predetermined condition as the battery diagnosis information. 
     The first communication unit may be configured to send the information provision request for the first battery information to the battery management system, after receiving the request for the first battery information from the data conversion unit. 
     An apparatus for providing battery information according to further another aspect of the present disclosure may further comprise a decoding unit configured to obtain first decoding information and second decoding information by decoding the first conversion information and the second conversion information, respectively, and output the first decoding information and the second decoding information. 
     The first communication protocol may be a Modbus TCP communication protocol. 
     The second communication protocol may be a CAN communication protocol. 
     In another aspect of the present disclosure, there is also provided a battery pack, comprising the apparatus for providing battery information according to an aspect of the present disclosure. 
     In another aspect of the present disclosure, there is also provided an energy storage system, comprising the apparatus for providing battery information according to an aspect of the present disclosure. 
     In another aspect of the present disclosure, there is also provided a method for providing battery information, comprising: a first receiving step of receiving first battery information related to a battery from a battery management system by using a first communication protocol; a second receiving step of receiving second battery information related to the battery and different from the first battery information from the battery management system by using a second communication protocol different from the first communication protocol, in parallel to the first receiving step; a data conversion step of obtaining first conversion information by converting the first battery information into a predetermined data structure and obtaining second conversion information by converting the second battery information into the predetermined data structure; and a data output step of outputting the first conversion information and the second conversion information. 
     Advantageous Effects 
     According to an aspect of the present disclosure, by receiving battery-related information from a battery management system using both a first communication protocol with high communication efficiency for the first battery information and a second communication protocol with high communication efficiency for the second battery information, system resources required for data communication may be used efficiently. 
     In addition, according to an aspect of the present disclosure, battery information received through different communication protocols are converted into the same data structure and then stored in association, thereby making it easier to manage and process battery-related information. 
     The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims. 
    
    
     
       DESCRIPTION OF DRAWINGS 
       The accompanying drawings illustrate a preferred embodiment of the present disclosure and together with the foregoing disclosure, serve to provide further understanding of the technical features of the present disclosure, and thus, the present disclosure is not construed as being limited to the drawing. 
         FIG. 1  is a diagram schematically showing an example where a conventional battery management system and a monitoring device make communication using a CAN communication protocol. 
         FIG. 2  is a diagram schematically showing an example where a conventional battery management system and a monitoring device make communication using a Modbus TCP communication protocol. 
         FIG. 3  is a diagram schematically showing an apparatus for providing battery information according to an embodiment of the present disclosure. 
         FIG. 4  is a diagram schematically showing a connection configuration of the apparatus for providing battery information according to an embodiment of the present disclosure and a battery management system. 
         FIG. 5  is a diagram schematically showing a data structure of conversion information, which is converted by the apparatus for providing battery information according to an embodiment of the present disclosure. 
         FIG. 6  is a diagram schematically showing an example of a communication process of the apparatus for providing battery information according to an embodiment of the present disclosure and the battery management system. 
         FIGS. 7 and 8  are diagrams schematically showing a battery pack including the apparatus for providing battery information according to an embodiment of the present disclosure. 
         FIG. 9  is a diagram schematically showing an energy storage system including the apparatus for providing battery information according to an embodiment of the present disclosure. 
         FIG. 10  is a diagram schematically showing a method for providing battery information according to another embodiment of the present disclosure. 
     
    
    
     BEST MODE 
     It should be understood that the terms used in the specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present disclosure on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. 
     Therefore, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the disclosure, so it should be understood that other equivalents and modifications could be made thereto without departing from the scope of the disclosure. 
     Additionally, in describing the present disclosure, when it is deemed that a detailed description of relevant known elements or functions renders the key subject matter of the present disclosure ambiguous, the detailed description is omitted herein. 
     The terms including the ordinal number such as “first”, “second” and the like, may be used to distinguish one element from another among various elements, but not intended to limit the elements by the terms. 
     Throughout the specification, when a portion is referred to as “comprising” or “including” any element, it means that the portion may include other elements further, without excluding other elements, unless specifically stated otherwise. 
     In addition, throughout the specification, when a portion is referred to as being “connected” to another portion, it is not limited to the case that they are “directly connected”, but it also includes the case where they are “indirectly connected” with another element being interposed between them. 
     Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. 
       FIG. 3  is a diagram schematically showing an apparatus for providing battery information  100  according to an embodiment of the present disclosure.  FIG. 4  is a diagram schematically showing a connection configuration of the apparatus for providing battery information  100  according to an embodiment of the present disclosure and a battery management system  200 . 
     Referring to  FIG. 3 , the apparatus for providing battery information  100  according to an embodiment of the present disclosure may include a first communication unit  110 , a second communication unit  120 , and a data conversion unit  130 . 
     The first communication unit  110  may be configured to receive first battery information related to a battery from the battery management system  200  by using a first communication protocol. 
     Here, the first communication protocol is a communication protocol for data communication between the first communication unit  110  and the battery management system  200 . For example, the first communication protocol may be a Modbus TCP communication protocol. 
     For example, in the embodiment of  FIG. 4 , the battery management system  200  and the first communication unit  110  may be connected to each other. Here, the battery management system  200  and the first communication unit  110  may be connected by wire and/or wirelessly, and data communication may be performed using the first communication protocol. 
     The second communication unit  120  may be configured to receive second battery information related to the battery and different from the first battery information from the battery management system  200  by using a second communication protocol different from the first communication protocol. 
     Here, the second communication protocol is a communication protocol for data communication between the second communication unit  120  and the battery management system  200 . In addition, the second communication protocol is a communication protocol different from the first communication protocol. For example, the second communication protocol may be a CAN communication protocol. 
     For example, in the embodiment of  FIG. 4 , the battery management system  200  and the second communication unit  120  may be connected to each other. Here, the battery management system  200  and the second communication unit  120  may be connected by wire and/or wirelessly, and data communication may be performed using the second communication protocol. 
     In addition, the second battery information that the second communication unit  120  receives from the battery management system  200  may be information different from the first battery information that the first communication unit  110  receives from the battery management system  200 . That is, the first communication unit  110  and the second communication unit  120  may be configured to receive battery information optimized for the applied communication protocol from the battery management system  200 , respectively. 
     The data conversion unit  130  may be configured to be connected to the first communication unit  110  and the second communication unit  120 . 
     Specifically, the data conversion unit  130  may be connected to enable communication with both the first communication unit  110  and the second communication unit  120 . 
     For example, in the embodiment of  FIG. 4 , the data conversion unit  130  may be connected to the first communication unit  110  and the second communication unit  120 . In addition, the data conversion unit  130  may receive the first battery information from the first communication unit  110  and receive the second battery information from the second communication unit  120 . 
     The data conversion unit  130  may be configured to obtain first conversion information by converting the first battery information into a predetermined data structure. 
     Specifically, the data conversion unit  130  may obtain the first conversion information by converting the first battery information received from the first communication unit  110  to correspond to a predetermined data structure. 
     In addition, the data conversion unit  130  may be configured to obtain second conversion information by converting the second battery information into the predetermined data structure. 
     Specifically, the data conversion unit  130  may obtain the second conversion information by converting the second battery information received from the second communication unit  120  to correspond to the predetermined data structure. 
     That is, the data conversion unit  130  may convert the first battery information received from the first communication unit  110  and the second battery information received from the second communication unit  120  into information having the same data structure. 
     Therefore, since the first battery information received by the first communication unit  110  from the battery management system using the first communication protocol and the second battery information received by the second communication unit  120  from the battery management system using the second communication protocol are converted by the data conversion unit  130  to have the same data structure, the data format may be unified. 
     The data conversion unit  130  may be configured to output the first conversion information and the second conversion information. 
     For example, the data conversion unit  130  may output and store the first conversion information and the second conversion information having the same data structure. 
     That is, the data conversion unit  130  may convert the first battery information and the second battery information having different data structures into the first conversion information and the second conversion information having the same data structure and then output them. 
     Therefore, the apparatus for providing battery information  100  according to an embodiment of the present disclosure may receive battery-related information from the battery management system  200  by using both the first communication protocol with high communication efficiency for the first battery information and the second communication protocol with high communication efficiency for the second battery information. 
     In addition, since the apparatus for providing battery information  100  may convert the first battery information and the second battery information into the same data structure, the battery information respectively received using the first communication protocol and the second communication protocol may be integrally managed. 
     Meanwhile, the data conversion unit  130  provided to the apparatus for providing battery information  100  may selectively include processors known in the art, application-specific integrated circuit (ASIC), other chipsets, logic circuits, registers, communication modems, data processing devices, and the like to execute various control logic performed in the present disclosure. Also, when the control logic is implemented in software, the data conversion unit  130  may be implemented as a set of program modules. At this time, the program module may be stored in a memory and executed by the data conversion unit  130 . The memory may be located inside or out of the data conversion unit  130  and may be connected to the data conversion unit  130  by various well-known means. 
       FIG. 5  is a diagram schematically showing a data structure of conversion information, which is converted by the apparatus for providing battery information  100  according to an embodiment of the present disclosure. 
     Referring to  FIG. 5 , the predetermined data structure may be configured as a structure including at least one of a target information field  131 , an identification information field  132 , and a battery information value field  133 . 
     The target information may be information for identifying a battery that is a target of the battery information received from the battery management system  200 . In addition, the target information field  131  may be a data space in which the target information may be included. 
     For example, the target information may include an ID of a battery cell, an ID of a battery module, an ID of a battery rack, or the like. Specifically, the target information may include a first battery cell, a second battery cell, a first battery module, a second battery module, a first battery rack, a second battery rack, or the like. 
     Here, the battery cell refers to one independent cell that includes a negative electrode terminal and a positive electrode terminal and is physically separable. For example, one pouch-type lithium polymer cell may be regarded as a battery cell. In addition, the battery module refers to a cell assembly in which one or more battery cells are connected in series and/or in parallel. In addition, the battery rack refers to a cell assembly including one or more battery modules in a housing. 
     The identification information may be information indicating a classification item of the battery information received from the battery management system  200 . In addition, the identification information field  132  may be a data space in which the identification information may be included. 
     For example, the identification information may include battery state information, battery diagnosis information, battery system information, battery-related control information, or the like. 
     The value of the battery information may be information indicating contents of the battery information received from the battery management system  200 . In addition, the value field  133  may be a data space in which the value of the battery information may be included. 
     For example, the value of the battery information may include a current value, a voltage value, a temperature value, an SOC, an SOH, or the like, which indicates state information of the battery, and may include battery diagnosis state information such as an overcharge state or an overdischarge state. In addition, the battery information value may include detailed contents of the battery system information and the battery-related control information. 
     In addition, although only the target information field  131 , the identification information field  132  and the value field  133  are included in the data structure of  FIG. 5 , it should be noted that various fields for the battery information such as a field indicating a storage location of the battery information and a field indicating the size of battery information may be further included. 
     The data conversion unit  130  may be configured to convert the first battery information and the second battery information to correspond to the predetermined data structure. 
     The data structure of the first battery information received using the first communication protocol and the second battery information received using the second communication protocol from the battery management system  200  may be different from each other. Accordingly, the apparatus for providing battery information  100  has an advantage of integrally managing the first conversion information and the second conversion information by converting the first battery information and the second battery information into a common data format (the predetermined data structure). 
     That is, the apparatus for providing battery information  100  has an advantage of more easily managing the battery information received using a plurality of different communication protocols since it manages the first battery information and the second battery information using a unified data structure, without converting and managing the first battery information and the second battery information into different data structures. 
     The apparatus for providing battery information  100  according to an embodiment of the present disclosure may further include a storage unit  140  configured to receive and store the first conversion information and the second conversion information from the data conversion unit  130 . 
     For example, in the embodiments of  FIGS. 3 and 4 , the storage unit  140  may be further included in the apparatus for providing battery information  100 . In addition, the storage unit  140  may be connected to the data conversion unit  130  to store the first conversion information and the second conversion information output from the data conversion unit  130 . 
     Here, the storage unit  140  is not particularly limited in its kind as long as it is a known information storage means that can record, erase, update and read data. As an example, the information storage means may include RAM, flash memory, ROM, EEPROM, registers, and the like. In addition, the storage unit  140  may store program codes in which processes executable by the data conversion unit  130  are defined. 
     The data conversion unit  130  may be configured to store conversion information corresponding to the target information to be associated with each other in the storage unit  140 . 
     Specifically, the data conversion unit  130  may check the target information included in the target information field  131  of the first conversion information, check the target information included in the target information field  131  of the second conversion information, and store conversion information including the same target information to be associated with each other in the storage unit  140 . 
     For example, it is assumed that the target information included in the target information field  131  of the first conversion information is the first battery cell, and the target information included in the target information field  131  of the second conversion information is the first battery cell. The data conversion unit  130  may store the first conversion information and the second conversion information including the first battery cell, which is common target information, to be associated with each other in the storage unit  140 . 
     Accordingly, since the battery information received through different communication protocols is converted into the same data structure and then stored to be associated with each other, battery-related information may be managed and processed more easily. 
     The first communication unit  110  may be configured to receive the first battery information corresponding to the information provision request from the battery management system  200 , only when an information provision request for the first battery information is sent to the battery management system  200 . 
     Specifically, the first communication unit  110  may send an information provision request for the first battery information to the battery management system  200  by using the first communication protocol. After that, the first communication unit  110  may receive the first battery information from the battery management system  200  by using the first communication protocol. 
     For example, the first communication protocol may be a communication protocol employing a request-response method such as Modbus TCP communication protocol. 
     In the information provision request sent by the first communication unit  110 , the target information and the identification information for the first battery information may be designated. That is, the first communication unit  110  may send the information provision request for the first battery information to the battery management system  200  after designating the target information and the identification information of the first battery information that is a target of the information provision request. 
     For example, when the first communication unit  110  intends to receive the voltage information for the first battery cell, the information provision request sent by the first communication unit  110  to the battery management system  200  may include the first battery cell as the target information and include the voltage information as the identification information. After that, the first communication unit  110  may receive the first battery information from the battery management system, and the data conversion unit  130  may convert the first battery information into first conversion information. In this case, the target information field  131  of the first conversion information may include “first battery cell”, the identification information field  132  may include “voltage information”, and the value field  133  may include the voltage value of, for example, “3.8 [V]”. 
     Preferably, the first communication unit  110  may be configured to send the information provision request for the first battery information at every predetermined cycle or only when there is a request from the data conversion unit  130 . 
     Specifically, the first communication unit  110  may send the information provision request for the first battery information to the battery management system  200  at every predetermined cycle, and receive the first battery information as a response thereto. 
     In addition, even when there is a request from the data conversion unit  130 , the first communication unit  110  may send the information provision request for the first battery information to the battery management system  200 , and receive the first battery information as a response thereto. In this case, the target information and the identification information included in the first battery information may be designated by the data conversion unit  130 . 
     Meanwhile, the second communication unit  120  may be configured to receive the second battery information from the battery management system  200  by using the second communication protocol even if the information provision request for the second battery information is not sent to the battery management system  200 . 
     For example, the second communication protocol may be a communication protocol that does not employ a request-response method, such as a CAN communication protocol. 
     Accordingly, the second communication unit  120  may receive the second battery information from the battery management system  200  even if a separate information provision request for the second battery information is not sent to the battery management system  200 . 
     The first battery information and the second battery information may be classified in consideration of whether or not the information requires real-time processing. Here, whether real-time processing is required may be set according to whether it is required that the process until the battery information obtained by the battery management system  200  is provided to the apparatus for providing battery information  100  should be performed in real time. 
     Preferably, the first battery information may have a lower demand for real-time processing than the second battery information. That is, the second battery information may be information that should be sent to the apparatus for providing battery information  100  immediately after being obtained by the battery management system  200 , even if there is no separate request. 
     For example, the first battery information may be battery state information including at least one of voltage, current, temperature, SOC and SOH of the battery. 
     In addition, the second battery information may include at least one of battery system information, battery diagnosis information and battery-related control information. 
     The battery system information may be information provided when the battery management system  200  and the apparatus for providing battery information  100  are connected first. For example, the battery system information may include information on the battery management system  200  such as manufacturing date of the battery management system  200 , serial number, software version, hardware version, the number of battery racks in operation, the number of battery modules in operation, the number of battery cells in operation, and the type of battery cells. 
     The battery diagnosis information may be diagnosis information on a battery (a battery rack, a battery module and/or a battery cell) operating in the battery management system  200 . For example, the battery diagnosis information may include information indicating battery states such as a normal state, a high voltage state, a low voltage state, an overcharge state, an overdischarge state, a high temperature state and a low temperature state. 
     The battery-related control information may be control command information for the battery management system  200  or control command information by the battery management system  200 . For example, the battery-related control information may include control command information for the battery management system  200  such as a start command information, an end command information and a standby command information for the battery management system  200 , and control command information by the battery management system  200  such as an air conditioner operation command and a relay operation state switching command. 
     The second battery information (battery system information, battery diagnosis information, and battery-related control information) has a smaller capacity than the first battery information (battery state information), but requires real-time processing. 
     For example, referring to  FIGS. 1 and 2 , the battery diagnosis information such as error information is information that should be provided to the apparatus for providing battery information  100  as soon as it is checked by the battery management system  200 . Accordingly, the apparatus for providing battery information  100  may receive the second battery information from the battery management system  200  by using the second communication protocol. 
     Meanwhile, the battery state information such as battery voltage information is information that is unlikely to cause a fatal defect even if the battery management system  200  checks it only when there is an information provision request. Also, in general, the capacity of the first battery information may be greater than the capacity of the second battery information. 
     Therefore, if the first battery information having a relatively larger capacity than the second battery information and not necessarily requiring real-time processing makes communication by using the second communication protocol, system resources for communication between the battery management system  200  and the apparatus for providing battery information  100  may be wasted. To solve this problem, the apparatus for providing battery information  100  may receive the first battery information from the battery management system  200  by using the first communication protocol. 
     That is, the apparatus for providing battery information  100  according to an embodiment of the present disclosure has an advantage of creating an optimized communication environment for each of the first battery information and the second battery information by communicating with the battery management system  200  through a plurality of communication protocols. 
     The first battery information may be configured to be distinguished from the second battery information based on capacity. For example, the first battery information may be configured to have a larger capacity than the second battery information. 
     Specifically, the first battery information and the second battery information may be configured to be distinguished according to a data transmission speed of the second communication protocol. That is, the first battery information and the second battery information may be distinguished based on data transmission capacity per second of the second communication protocol. 
     The data transmission speed of the first communication protocol may be faster than the data transmission speed of the second communication protocol. For example, the data transmission speed of the first communication protocol may be 100 Mbps at maximum, and the data transmission speed of the second communication protocol may be 1 Mbps at maximum. 
     Preferably, the capacity of the first battery information may be greater than the capacity of the second battery information, smaller than the data transmission capacity per second (e.g., 100 Mbit) of the first communication protocol, and greater than the data transmission capacity per second (e.g., 1 Mbit) of the second communication protocol. In addition, the capacity of the second battery information may be smaller than the data transmission capacity per second (e.g., 1 Mbit) of the second communication protocol. 
     For example, it is assumed that the battery management system  200  is connected to 15,000 battery cells. The battery management system  200  may send the first battery information including voltage information, current information and temperature information of each of 15,000 battery cells to the apparatus for providing battery information  100 . In addition, it is assumed that each of the voltage information, the current information and the temperature information has a size of 32 bits (4 bytes). In this case, the capacity of the first battery information sent by the battery management system  200  may be 1.44 Mbit (32 bit×3×15,000). 
     In the above example, if the battery management system  200  sends the first battery information to the apparatus for providing battery information  100  by using the second communication protocol, there may be a problem in that all of the first battery information cannot be sent at once. That is, since the data transmission capacity per second (e.g., 1 Mbit) of the second communication protocol is smaller than the capacity of the first battery information (e.g., 1.44 Mbit), the battery management system  200  should send the first battery information to the apparatus for providing battery information  100  in twice by using the second communication protocol. Therefore, unless the first battery information and the second battery information, which may be distinguished according to capacity, are sent to the apparatus for providing battery information  100  using different communication protocols respectively corresponding thereto, system resources for communication may be severely wasted. 
     The apparatus for providing battery information  100  according to an embodiment of the present disclosure may classify the first battery information and the second battery information according to capacity in consideration of the data transmission speed of the first communication protocol and the data transmission speed of the second communication protocol. Accordingly, the apparatus for providing battery information  100  may perform efficient communication by receiving the first battery information and the second battery information from the battery management system  200  by using communication protocols respectively corresponding thereto. Therefore, system resources required for communication between the battery management system  200  and the apparatus for providing battery information  100  may be efficiently utilized, thereby preventing the system resources from being wasted. 
       FIG. 6  is a diagram schematically showing an example of a communication process of the apparatus for providing battery information  100  according to an embodiment of the present disclosure and the battery management system  200 . 
     The data conversion unit  130  may be configured to send a request for the first battery information corresponding to the second conversion information to the first communication unit  110 , if the identification information of the second conversion information meets a predetermined condition as the battery diagnosis information. 
     Specifically, if the identification information of the second conversion information is the battery diagnosis information, the data conversion unit  130  may check the value of the battery information included in the value field  133  of the second conversion information. If the value of the battery information of the second conversion information does not indicate a normal state, the data conversion unit  130  may determine that the predetermined condition is met. 
     That is, if the identification information of the second conversion information is the battery diagnosis information and the value of the battery information is not a normal state, the data conversion unit  130  may send a request for the first battery information to the first communication unit  110 . Specifically, the data conversion unit  130  may send a request for first battery information corresponding to the value of the battery information of the second conversion information to the first communication unit  110 . 
     For example, in the embodiment of  FIG. 6 , the target information of the second conversion information may be “first battery”, the identification information may be “battery diagnosis information”, and the value of the battery information may be “overvoltage”. Even though the identification information of the second conversion information is “battery diagnosis information”, since the value of the battery information is not “normal state”, the data conversion unit  130  may send a request for the first battery information corresponding to “overvoltage (the value of the battery information of the second conversion information)” to the first communication unit  110 . 
     The first communication unit  110  may be configured to send an information provision request for the first battery information to the battery management system  200  after receiving the request for the first battery information from the data conversion unit  130 . 
     The request for the first battery information received from the data conversion unit  130  by the first communication unit  110  may include the target information and the identification information, which should be included in the first battery information. Here, the identification information may be information corresponding to the value of the battery information of the second conversion information. 
     For example, in the embodiment of  FIG. 6 , the request for the first battery information sent to the first communication unit  110  by the data conversion unit  130  may include the voltage information of the first battery. 
     In another embodiment, if “overcurrent” is included in the value of the battery information of the second conversion information, the request for the first battery information sent to the first communication unit  110  by the data conversion unit  130  may include the current information of the first battery. 
     In still another embodiment, if “high temperature” is included in the value of the battery information of the second conversion information, the request for the first battery information sent to the first communication unit  110  by the data conversion unit  130  may include the temperature information of the first battery. 
     After that, if the first communication unit  110  receives the first battery information from the battery management system  200 , the data conversion unit  130  may obtain the first conversion information by receiving the first battery information from the first communication unit  110 . 
     For example, in the embodiment of  FIG. 6 , the first conversion information may include “first battery” as the target information, include “battery state information (specifically, battery voltage information)” as the identification information, and include “4.2 [V]” as the value of the battery information. 
     After that, the data conversion unit  130  may store the first conversion information and the second conversion information with the same target information as “first battery” in the storage unit  140  to be associated with each other. 
     Through this process, the apparatus for providing battery information  100  according to an embodiment of the present disclosure may determine the first battery information, which is to be requested to be provided to the battery management system  200 , based on the second battery information received in advance. Accordingly, since the first battery information and the second battery information related to each other are stored in association with each other, battery-related information may be managed more efficiently. 
     The apparatus for providing battery information  100  according to an embodiment of the present disclosure may further include a decoding unit  150  configured to obtain first decoding information and second decoding information by decoding the first conversion information and the second conversion information, respectively. 
     Here, the decoding information refers to information obtained by decoding the conversion information into characters, symbols, numbers and/or figures to be provided to a user. 
     Referring to  FIGS. 3 and 4 , the apparatus for providing battery information  100  may further include a decoding unit  150 , and the decoding unit  150  may be communicatively connected to the data conversion unit  130 . The decoding unit  150  may receive at least one of the first conversion information and the second conversion information output from the data conversion unit  130  and decode the received conversion information to obtain first decoding information and/or second decoding information. 
     For example, in the embodiment of  FIG. 6 , for convenience of explanation, it is shown that the second conversion information includes “first battery” as the target information, “battery diagnosis information” as the identification information, and “overvoltage” as the value of the battery information. However, in fact, the conversion information may take the form of a system code used in the apparatus for providing battery information  100 . For example, the conversion information may include a hexadecimal system code such as 0x01, 0xD431, and 0x31. 
     That is, the decoding unit  150  may obtain decoding information, which may be checked by a user, by decoding a system code included in the conversion information. 
     The decoding unit  150  may be configured to output the first decoding information and the second decoding information. 
     For example, in the embodiment of  FIG. 4 , the decoding unit  150  may be communicatively connected with the storage unit  140 . In addition, the decoding unit  150  may output the first decoding information and the second decoding information to be stored in the storage unit  140 . Preferably, like the data conversion unit  130 , the decoding unit  150  may store the decoding information having the same target information to be associated with each other. 
     Referring to  FIGS. 3 and 4  further, the apparatus for providing battery information  100  according to an embodiment of the present disclosure may further include a display unit  160 . 
     The display unit  160  may be communicatively connected to the decoding unit  150 . The display unit  160  may be configured to receive the first decoding information and the second decoding information output from the decoding unit  150 , and output the received first decoding information and the received second decoding information through a provided display screen or the like. Preferably, the display unit  160  may output the decoding information having the same target information to be associated with each other. Through this, the user may easily check the first decoding information and the second decoding information related to each other. 
     A battery pack  1  according to another embodiment of the present disclosure may include the apparatus for providing battery information  100  according to an embodiment of the present disclosure. 
       FIGS. 7 and 8  are diagrams schematically showing a battery pack  1  including the apparatus for providing battery information  100  according to an embodiment of the present disclosure. 
     Specifically,  FIG. 7  is a diagram schematically showing a battery pack  1  including one battery management system  200 , and  FIG. 8  is a diagram schematically showing a battery pack  1  including a plurality of battery management systems  200   a ,  200   b ,  200   c.    
     Preferably, the battery management system  200  may be configured to output the battery information by using both the first communication protocol and the second communication protocol. Accordingly, the battery management system  200  may be connected to the first communication unit  110  and the second communication unit  120  of the apparatus for providing battery information  100 . 
     For example, if only the first communication protocol is available and the second communication protocol is not available, when the battery management system  200  is provided in the battery pack  1 , the battery management system  200  may be connected only to the first communication unit  110 . 
     In addition, although not shown in  FIGS. 7 and 8 , the battery pack  1  according to the present disclosure may include at least one battery cell. In addition, the battery pack  1  may further include electrical equipment (a relay, a fuse, etc.) and a case. 
     An energy storage system (ESS)  2  according to another embodiment of the present disclosure may include the apparatus for providing battery information  100  according to an embodiment of the present disclosure. 
       FIG. 9  is a diagram schematically showing an energy storage system  2  including the apparatus for providing battery information  100  according to an embodiment of the present disclosure. 
     Referring to  FIG. 9 , the energy storage system  2  may include a plurality of battery racks  300   a ,  300   b ,  300   c , a plurality of battery management systems  200   a ,  200   b ,  200   c , and the apparatus for providing battery information  100 . 
     For example, the battery rack  300  may be a cell assembly in which one or more battery modules  310  are mounted on a predetermined frame structure. In addition, the battery management system  200  may be provided to each of the plurality of battery racks  300   a ,  300   b ,  300   c.    
     In addition, the plurality of battery management systems  200   a ,  200   b ,  200   c  may be connected to the apparatus for providing battery information  100 . However, it should be noted that although  FIG. 9  shows an example in which the battery management system  200  and the apparatus for providing battery information  100  are connected by wire, the battery management system  200  and the apparatus for providing battery information  100  may be connected through wireless communication. 
     The apparatus for providing battery information  100  may be configured to communicate with the battery management system  200  provided in the battery rack  300  by using the first communication unit  110  and the second communication unit  120 . 
     Therefore, there is an advantage in that information related to the battery rack  300  may be efficiently communicated by using a plurality of communication protocols. 
       FIG. 10  is a diagram schematically showing a method for providing battery information according to another embodiment of the present disclosure. 
     Here, the method for providing battery information may be performed by the apparatus for providing battery information  100 . 
     Hereinafter, it should be noted that contents overlapping with the above description will be briefly described. 
     Referring to  FIG. 10 , the method for providing battery information according to another embodiment of the present disclosure includes a first receiving step (S 100 ), a second receiving step (S 200 ), a data conversion step (S 300 ), and a data output step (S 400 ). 
     The first receiving step (S 100 ) is a step of receiving first battery information related to a battery from the battery management system  200  by using a first communication protocol, and may be performed by the first communication unit  110 . 
     The second receiving step (S 200 ) is a step of receiving second battery information related to the battery and different from the first battery information from the battery management system  200  by using a second communication protocol different from the first communication protocol, and may be performed by the second communication unit  120 . 
     In addition, the second receiving step (S 200 ) is a step in parallel with the first receiving step (S 100 ). That is, the second receiving step S 200  may be performed at the same time as the first receiving step S 100  or may be performed at different time points. 
     The data conversion step (S 300 ) is a step of converting the first battery information into a predetermined data structure to obtain first conversion information and converting the second battery information into the predetermined data structure to obtain second conversion information, and may be performed by the data conversion unit  130 . 
     Referring to  FIG. 4 , the data conversion unit  130  may be connected to the first communication unit  110  and the second communication unit  120 . The data conversion unit  130  may receive the first battery information from the first communication unit  110  and receive the second battery information from the second communication unit  120 . In addition, the data conversion unit  130  may convert the first battery information and the second battery information into the same data structure to obtain first conversion information from the first battery information and obtain second conversion information from the second battery information. 
     The data output step S 400  is a step of outputting the first conversion information and the second conversion information, and may be performed by the data conversion unit  130 . 
     Referring to  FIG. 4 , the data conversion unit  130  may be connected to the decoding unit  150  and the storage unit  140 . 
     The data conversion unit  130  may output the first conversion information and the second conversion information to the storage unit  140  to store the first conversion information and the second conversion information. Preferably, the data conversion unit  130  may store the conversion information having the same target information to be associated with each other. 
     In addition, the data conversion unit  130  may output the first conversion information and the second conversion information to the decoding unit  150 . The decoding unit  150  may receive the first conversion information and the second conversion information, obtain first decoding information by decoding the first conversion information, and obtain second decoding information by decoding the second conversion information. In addition, the decoding unit  150  may output the first decoding information and the second decoding information to the display unit  160  and/or the storage unit  140 . 
     The embodiments of the present disclosure described above may not be implemented only through an apparatus and a method, but may be implemented through a program that realizes a function corresponding to the configuration of the embodiments of the present disclosure or a recording medium on which the program is recorded. The program or recording medium may be easily implemented by those skilled in the art from the above description of the embodiments. 
     The present disclosure has been described in detail. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the disclosure, are given by way of illustration only, since various changes and modifications within the scope of the disclosure will become apparent to those skilled in the art from this detailed description. 
     Additionally, many substitutions, modifications and changes may be made to the present disclosure described hereinabove by those skilled in the art without departing from the technical aspects of the present disclosure, and the present disclosure is not limited to the above-described embodiments and the accompanying drawings, and each embodiment may be selectively combined in part or in whole to allow various modifications. 
     REFERENCE SIGNS 
     
         
         
           
               1 : battery pack 
               2 : energy storage system 
               100 : apparatus for providing battery information 
               110 : first communication unit 
               120 : second communication unit 
               130 : data conversion unit 
               131 : target information field 
               132 : identification information field 
               133 : value field 
               140 : storage unit 
               150 : decoding unit 
               160 : display unit 
               200 : battery management system 
               300 : battery rack 
               310 : battery module