KR20210057922A - Battery information management system and management method for electric vehicles - Google Patents

Abstract

The present invention relates to a battery information management system for an electric vehicle, and a management method. The battery information management system for an electric vehicle according to the present invention comprises: a battery pack equipped with a battery management device for an electric vehicle; a battery diagnostic device; and a battery operation management server. The battery diagnostic device comprises: a battery diagnosis unit separately provided outside the battery management device and connected as necessary for diagnosis to perform diagnosis on a battery; and a battery information collection and transmission unit. The battery information collection and transmission unit comprises: a battery information collection unit that receives a diagnosis result performed by the battery diagnosis unit and collects information on the battery; and a battery information transmission unit for transmitting the collected information of the battery. The battery operation management server performs integrated operation and management of a plurality of batteries for electric vehicles by confirming information of the battery transmitted from the battery information collection and transmission unit.

Description

Battery information management system and management method for electric vehicles

The present invention relates to a battery information management system and a management method for an electric vehicle, and more particularly, to a battery information management system for an electric vehicle that comprehensively operates and manages the state of battery packs included in a number of electric vehicles currently in operation. It relates to the system and management method.

Recently, eco-friendliness due to environmental pollution and saving energy resources due to lack of energy have been emphasized. Accordingly, the automobile industry is also developing electric vehicles, which are eco-friendly and energy-efficient vehicles to improve competitiveness. In recent years, thanks to performance improvement and cost reduction of batteries, etc., electric vehicles are becoming a reality as a vehicle for general use. _{Electric vehicles do not emit CO 2} while driving, have excellent environmental performance, and at the same time have the characteristics that greatly change the attractiveness of the vehicle, such as strong acceleration performance with good response and quiet and smooth driving feeling. In order for an electric vehicle to be commercialized, it is essential to check the state of the battery pack, that is, the charging capacity, along with a charger for charging the battery pack, and establish an operation management plan such as a driving distance and charging date and charging method.

The establishment of the operation and management plan of such a battery pack is a part of the national R&D project, and the following prior art document, Patent Document Application No. 10-2015-0134071, which the applicant has changed after filing by the present applicant, "Battery Diagnosis Device and Method" As disclosed in, each user manually connects a battery diagnosis system (BDS) to the battery pack and provides the diagnosis results (e.g., state of charge (SOC), state of health (SOH), etc.) at random. It can be transmitted to the terminal, and the terminal receiving the diagnosis result displayed the corresponding content, thereby providing the diagnosis result to the user.

However, the prior art focuses on battery diagnosis focusing on electric vehicle users, and there is a problem in that the integrated management is not properly performed in the case of a management company or institution that must integrate and manage battery packs of a plurality of electric vehicles.

KR 10-2017-0035229 A

Therefore, the problem to be solved by the present invention is to solve the above problems

Battery information management system for electric vehicles that can be operated and managed in an integrated manner by an electric vehicle management company or institution based on the obtained information by easily acquiring the battery information of the battery packs of a plurality of electric vehicles scattered across the region. And to provide a management method.

The battery information management system for an electric vehicle according to the present invention for solving the above problems is a battery pack equipped with a battery management device for an electric vehicle, and is separately provided externally to the battery management device, and is connected as needed for diagnosis, and the A battery diagnosis unit that performs diagnosis on a battery, a battery information collection unit that receives the diagnosis result performed by the battery diagnosis unit and collects information on the battery, and a battery information transmission unit that transmits the collected battery information A battery diagnosis device including a battery information collection and transmission unit provided, and a battery operation management server that integrates and manages a plurality of electric vehicle batteries by checking information on the battery transmitted from the battery information collection and information transmission unit. Includes.

The battery information transmission unit can transmit information of the battery through a Bluetooth or Wi-Fi communication method when it is in a short distance from the battery operation management server, and when the battery operation management server is in a distance, the battery information is transmitted through a commercial wireless communication means. Information can be transmitted.

In the battery information management method for an electric vehicle according to the present invention for solving the above problems, the battery information collection and transmission unit of the battery management device that receives the battery information collection and transmission request through the battery operation management server is provided with a diagnosis request to a battery diagnosis unit. Transmitting a message, the battery diagnosis unit transmitting a control message related to the diagnosis request message to a connected battery management device for diagnosis, the battery management device measuring the state of the battery pack according to the control message And transmitting, by the battery management device, a status response message, which is a result of the measured status of the battery pack, to the battery diagnosis unit, wherein the battery diagnosis unit is provided with information on the battery pack included in the status response message transmitted from the battery management device Checking the battery status based on the battery status, wherein the battery diagnosis unit generates a diagnosis response message including the checked battery status information and transmits it to the battery information collection and transmission unit, and the battery information collection and transmission unit is transmitted After storing the battery status information included in the diagnostic response message in a battery information collection unit, transmitting a battery information response signal including the battery status information collected to the battery operation management server through a battery information transmission unit. Includes.

When the battery information response signal is transmitted from the battery information collection and transmission unit, the battery operation management server may further include performing integrated operation management control on the battery of each electric vehicle based on the battery information response signal.

The battery information collecting and transmitting unit may further include generating a diagnosis request message requesting completion of diagnosis of the battery pack-related state, and transmitting the generated diagnosis end message to the battery diagnosis unit.

When the battery diagnosis unit receives a termination message from the battery information collection and transmission unit, it terminates diagnosis of the related state of the battery pack, generates an ACK message that is a response to the diagnosis termination message, and collects the generated ACK message. And transmitting to the transmission unit.

When the battery information collecting and transmitting unit receives an ACK message from the battery diagnosis unit, determining that the diagnosis of the battery pack-related state has ended.

According to the present invention, the battery information of the battery packs of a plurality of electric vehicles scattered and operated in an arbitrary area is easily obtained using a battery diagnosis device provided in an electric vehicle charging station, and the obtained information is wirelessly transmitted to the battery operation management server. By transmitting in real time through a communication method, there is an advantageous effect that the battery status of the electric vehicle can be integrated and managed.

1 is an overall configuration diagram of a battery information management system for an electric vehicle according to the present invention;
2 is a flowchart illustrating a method of managing a wake-up power line among a method of managing battery information for an electric vehicle according to an embodiment of the present invention;
3 is a flow chart illustrating a method for managing input/output of signals in a method for managing battery information for an electric vehicle according to an embodiment of the present invention;
4 is a flowchart illustrating a method of managing input/output of signals in a method of managing battery information for an electric vehicle according to another embodiment of the present invention;
5 is a flow chart illustrating a method of managing input/output of signals in a method of managing battery information for an electric vehicle according to another embodiment of the present invention;
6 is a flowchart illustrating a method of managing a CAN communication line among a method of managing battery information for an electric vehicle according to an embodiment of the present invention.
7 is a flowchart illustrating a sensing-related management method among a method for managing battery information for an electric vehicle according to an embodiment of the present invention;
8 is a flow chart illustrating a method for managing cell-related states among a method for managing battery information for an electric vehicle according to an embodiment of the present invention; and
9 is a flowchart illustrating a method of managing a state related to a battery pack among a method of managing battery information for an electric vehicle according to an embodiment of the present invention.

Specific details of the embodiment are included in the detailed description and drawings.

Advantages and features of the present invention, and a method of achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms different from each other, and only these embodiments make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention pertains. It is provided to completely inform the scope of the invention to the possessor, and the invention is only defined by the scope of the claims.

The same reference numerals refer to the same elements throughout the specification. Embodiments described in the present specification will be described with reference to an ideal configuration diagram and a flow chart of the present invention.

Hereinafter, a battery information management system and a management method for an electric vehicle according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a battery information management system for an electric vehicle according to an embodiment of the present invention will be described in detail with reference to FIG. 1 focusing on the configuration thereof.

1 is an overall configuration diagram of a battery information management system for an electric vehicle according to the present invention.

The battery pack 100 may be included in an electric vehicle. Here, the electric vehicle may mean a pure electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or the like. The battery pack 100 may include a plurality of battery modules, and each of the plurality of battery modules may include a plurality of battery cells.

In addition, the battery pack 100 may directly include or be connected to a battery management system (BMS) 110.

The battery management device 110 may monitor current, voltage, temperature, etc. of the battery pack 100.

The battery diagnosis system (BDS) 200 includes a battery diagnosis unit 210 (battery diagnosis, BD) and a battery information collection and transmission unit 250 (battery data recorder and transmission, BDRT), and When a diagnosis is required, it is connected to the battery management device 110 of the battery pack 100 of an electric vehicle that is provided in a laboratory, etc., and obtains information on the battery pack 100 from the battery management device 110 to obtain a battery It transmits to the operation management server 400.

The battery diagnosis unit 210 may include a connector (eg, a main connector and a debug connector), and may be connected to the battery management device 110 through a connector as necessary. The battery diagnosis unit 210 may include a micro controller unit (MCU), and may perform a diagnosis function for the battery pack 100. The battery diagnosis unit 210 may include a display unit, and the display unit may display a diagnosis result performed by the MCU.

For example, the battery diagnosis unit 210 includes a diagnosis function of a wake-up power line, a diagnosis function related to signal input/output, a diagnosis function of a controller area network (CAN) communication line, and sensing. A related diagnosis function, a condition diagnosis function of the battery pack 100 based on data acquired through CAN communication, and the like may be performed. The diagnostic function performed by the battery diagnostic unit 210 is not limited to the above-described contents, and various diagnostic functions may be performed. In addition, the battery diagnosis unit 210 is connected to a battery data recorder and transmission (BDRT) 250 to be described later through wired or wireless, so that the diagnosis result of the battery pack 100 is transmitted to the battery information. It transmits to the collection and transmission unit 250.

The battery information collection and transmission unit 250 is connected to the battery diagnosis unit 210, and can request the battery diagnosis unit 210 to diagnose the battery pack 100, and diagnose the battery pack 100 The result may be obtained from the battery diagnosis unit 210.

To this end, the battery information collection and transmission unit 250 requests the battery diagnosis unit 210 to diagnose the battery pack 100, obtains a diagnosis result for the battery pack 100, and stores the battery information collection unit 260. , battery data recorder, BDR) and the battery operation management server 400 to be described later on information stored in the battery information collection unit 260 includes a battery information transmission unit 270 (battery data transmission, BDT) that transmits.

Information transmission from the battery information transmission unit 270 to the battery operation management server 400 may be performed through Wi-Fi or Bluetooth communication when the electric vehicle is in a short distance from the battery operation management server 400, but 4G when the electric vehicle is in a distance. It can be performed through commercial wireless communication such as 5G.

The battery operation management server 400 checks the battery information of each electric vehicle transmitted from the battery information transmission unit 270 and integrates and manages a plurality of electric vehicle batteries.

Hereinafter, a method of managing battery information for an electric vehicle according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 9.

2 is a flowchart illustrating a method of managing a wake-up power line among a method of managing battery information for an electric vehicle according to an embodiment of the present invention. FIG. 3 is a method for managing battery information for an electric vehicle according to an embodiment of the present invention. A flow chart showing a method for managing input/output of a heavy signal, FIG. 4 is a flow chart showing a method for managing input/output of a signal in a method for managing battery information for an electric vehicle according to another embodiment of the present invention, and FIG. 5 is another embodiment of the present invention. A flow chart showing a method for managing input/output of signals among a method for managing battery information for an electric vehicle according to an embodiment, and FIG. 6 is a flowchart illustrating a method for managing a CAN communication line among a method for managing battery information for an electric vehicle according to an embodiment of the present invention. 7 is a flowchart showing a sensing-related management method among a method for managing battery information for an electric vehicle according to an embodiment of the present invention, and FIG. 8 is a flowchart illustrating a method for managing battery information for an electric vehicle according to an embodiment of the present invention. A flowchart illustrating a method for managing cell-related states, and FIG. 9 is a flowchart illustrating a method for managing a battery pack-related state among a method for managing battery information for an electric vehicle according to an embodiment of the present invention.

First, a method of managing a wake-up power line among a method of managing battery information for an electric vehicle according to an embodiment of the present invention will be described with reference to FIG. 2.

Referring to FIG. 2, the battery diagnosis unit 210 may perform diagnosis of a wake-up power line (eg, a wake-up car power line) while the electric vehicle is driving, and the battery pack 100 During charging of ), a diagnosis of a wake-up power line (eg, a wake-up charger power line) may be performed. In the following, "wake-up power line" may mean "wake-up car power line" or "wake-up charger power line".

The method of managing the wake-up power line may be initiated by a diagnosis request (S205) of the battery information collection and transmission unit 250 that receives the battery information collection and transmission request (S200) through the battery operation management server 400. . For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a wake-up power line, and may transmit the generated diagnosis request message to the battery diagnosis unit 210 ( S205). When the battery diagnosis unit 210 receives the diagnosis request message, it can be seen that diagnosis of the wake-up power line is requested. In this case, the battery diagnosis unit 210 may supply power to the battery management device 110 through the wake-up power line (S210), and may measure a voltage of the supplied power (S220).

The battery management device 110 may obtain power through a wake-up power line. In this case, the battery management device 110 may measure the voltage of the power supplied through the aux, and generate a report message including the measured result (ie, aux voltage information), and , The generated report message may be transmitted to the battery diagnosis unit 210 (S230). For example, the battery management apparatus 110 may report the Ox voltage information to the battery diagnosis unit 210 through host CAN communication. The battery diagnosis unit 210 may obtain information about the Ox voltage from the battery management apparatus 110 and compare the voltage of the power supplied through the wake-up power line with the Ox voltage (S240).

In addition, the battery diagnosis unit 210 may determine whether the wake-up power line is in a normal state or an abnormal state based on a voltage comparison result. The battery diagnosis unit 210 may generate a diagnosis response message including a voltage comparison result (or status information of the wake-up power line determined based on the voltage comparison result), and the generated diagnosis response message The battery information may be collected and transmitted to the transmission unit 250 (S250).

In addition, the diagnosis response message may further include state of charge (SOC) related information, state of health (SOH) related information, and alarm/fault related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information controls the state of the battery management device 110 (for example, a stop state, a run-ready state, etc.), and determines whether the battery pack 100 is in an abnormal state. Can be used to

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and a voltage comparison result (or a wake-up power determined based on a voltage comparison result) from the diagnosis response message Line status information), SOC-related information, SOH-related information, alarm/fault-related information, etc. can be obtained, and after storing the obtained information in the battery information collecting unit 260, the battery information transmitting unit ( A diagnostic response message signal, which is a battery information response signal, is transmitted to the battery operation management server 400 through 270 (S255).

In addition, the battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of the wake-up power line, and may transmit the generated diagnosis end message to the battery diagnosis unit 210 (S260). ). The battery diagnosis unit 210 may terminate the diagnosis of the wake-up power line when the diagnosis end message is received from the battery information collection and power generation unit 250, and transmit an acknowledgment (ACK) message in response to the diagnosis end message. It may be generated, and the generated ACK message may be transmitted to the battery information collection and transmission unit 250 (S270). When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the diagnosis of the wake-up power line has ended.

Next, a method for managing input/output of signals among the method for managing battery information for an electric vehicle according to an embodiment of the present invention will be described in detail with reference to FIG. 3.

Signal input/output-related management methods include a line diagnosis method for determining whether a charging gun is in contact when charging the battery pack 100, a line diagnosis method for determining whether a quick pick-up (QTP) module is seated, A line diagnosis method for determining the location of the battery pack 100 in the vehicle (or station) may be included.

Referring to FIG. 3, when the battery pack 100 is charged, the battery diagnosis unit 210 may perform diagnosis of a line that determines whether a charging gun is in contact. The diagnostic method of the line for determining whether the charging gun is in contact is initiated by a diagnosis request (S305) from the battery information collection and transmission unit 250 that receives the battery information collection and transmission request (S300) through the battery operation management server 400. Can be. For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a line that determines whether a charging gun is in contact, and transmits the generated diagnosis request message to the battery diagnosis unit 210 Can be (S305). When receiving the diagnosis request message, the battery diagnosis unit 210 may know that diagnosis of a line for determining whether the charging gun is in contact is requested. In this case, the battery diagnosis unit 210 may supply power to the battery management device 110 through Ox (S310).

The battery management device 110 may perform an initialization operation when power is obtained through Ox (S320). When the initialization operation is completed, the battery management apparatus 110 may generate a pilot signal and transmit the generated pilot signal (S330). The battery diagnosis unit 210 may obtain a pilot signal transmitted from the battery management apparatus 110. In this case, the battery diagnosis unit 210 (eg, a pilot signal comparator included in the battery diagnosis unit 210) may check the state of the acquired pilot signal (S340). In addition, the battery diagnosis unit 210 may determine whether a line for determining whether the charging gun is in contact with the charging gun is in a normal state or an abnormal state based on the state of the pilot signal.

The battery diagnosis unit 210 may generate a diagnostic response message including status information of the pilot signal (or status information of the line determined based on the status of the pilot signal), and collect the generated diagnostic response message And it may be transmitted to the transmission unit 250 (S350). In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and state information of the pilot signal (or the state of the line determined based on the state of the pilot signal) from the diagnosis response message. Information), SOC-related information, SOH-related information, alarm/fault-related information, etc. can be obtained, and the obtained information is stored in the battery information collection unit 260, and then the battery is operated through the battery information transmission unit 270. A diagnostic response message signal, which is a battery information response signal, is transmitted to the management server 400 (S355).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of a line for determining whether the charging gun is in contact, and may transmit the generated diagnosis end message to the battery diagnosis unit 210 ( S360). The battery diagnosis unit 210 may terminate the diagnosis of the line for determining whether the charging gun is in contact when the diagnosis end message is received from the battery information collection and transmission unit 250, and transmit an ACK message in response to the diagnosis end message. It may be generated, and the ACK message may be transmitted to the battery information collection and transmission unit 250 (S370). When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the diagnosis of the line for determining whether the charging gun is in contact has ended.

Next, with reference to FIG. 4, a method of managing input/output of a signal among a method of managing battery information for an electric vehicle according to another exemplary embodiment of the present invention will be described.

Referring to FIG. 4, the battery diagnosis unit 210 may perform diagnosis of a line for determining whether the QTP module of the battery pack 100 is seated. The diagnostic method of the line for determining whether the QTP module is seated is based on a diagnosis request (S405) from the battery information collection and transmission unit 250 that receives the battery information collection and transmission request (S400) through the battery operation management server 400. Can be initiated. For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a line that determines whether a QTP module is seated, and transmits the generated diagnosis request message to the battery diagnosis unit 210. Can be transmitted (S405). When receiving the diagnosis request message, the battery diagnosis unit 210 may know that diagnosis of a line for determining whether the QTP module is seated is requested. In this case, the battery diagnosis unit 210 may supply power to the battery management device 110 through Ox (S410).

The battery management device 110 may generate a connection signal when power is obtained through Ox, and may transmit the generated connection signal (S420). In this case, the battery management device 110 may transmit a connection signal after performing the initialization operation. The battery diagnosis unit 210 may obtain a connection signal transmitted from the battery management device 110. In this case, the battery diagnosis unit 210 (eg, a connection signal comparator included in the battery diagnosis unit 210) may check the state of the obtained connection signal (S430). In addition, the battery diagnosis unit 210 may determine whether a line for determining whether the QTP module is seated is in a normal state or an abnormal state based on the state of the connection signal.

The battery diagnosis unit 210 may generate a diagnostic response message including status information of the connection signal (or line status information determined based on the status of the connection signal), and collect the generated diagnostic response message And it may be transmitted to the transmission unit 250 (S440).

In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and state information of the connection signal (or the state of the line determined based on the state of the connection signal) from the diagnosis response message. Information), SOC-related information, SOH-related information, alarm/fault-related information, etc. can be obtained, and the obtained information is stored in the battery information collection unit 260, and then the battery is operated through the battery information transmission unit 270. A diagnostic response message signal, which is a battery information response signal, is transmitted to the management server 400 (S455).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of a line for determining whether the QTP module is seated, and transmit the generated diagnosis end message to the battery diagnosis unit 210. (S450). When the battery diagnosis unit 210 receives a diagnosis end message from the battery information collection and transmission unit 250, the diagnosis of the line for determining whether the QTP module is seated may be terminated, and an ACK message that is a response to the diagnosis end message May be generated, and the ACK message may be transmitted to the battery information collection and transmission unit 250 (S460). When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the diagnosis of the line for determining whether the QTP module is seated or not is finished.

Next, with reference to FIG. 5, a method for managing input/output of signals among a method for managing battery information for an electric vehicle according to another embodiment of the present invention will be described.

Referring to FIG. 5, the battery diagnosis unit 210 may perform diagnosis of a line for determining the location of the battery pack 100 in the vehicle (or station). The diagnostic method of the line for determining the location of the battery pack 100 is a diagnosis request from the battery information collection and transmission unit 250 that receives the battery information collection and transmission request (S500) through the battery operation management server 400 (S505). It can be initiated by For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a line for determining the location of the battery pack 100, and the generated diagnosis request message may be transmitted to the battery diagnosis unit ( 210) can be transmitted (S505). When receiving the diagnosis request message, the battery diagnosis unit 210 may know that diagnosis of a line for determining the location of the battery pack 100 is requested. In this case, the battery diagnosis unit 210 may stop supplying power through Ox (S510).

The battery diagnosis unit 210 may set the ID value to 2 (S520), and may supply power to the battery management device 110 through Ox (S530).

The battery management device 110 may obtain power through Ox. In this case, the battery management apparatus 110 may generate a host CAN message including an ID value, and transmit the host CAN message to the battery diagnosis unit 210 (S540).

The battery diagnosis unit 210 may receive a host CAN message from the battery management device 110 and may compare a set ID value with an ID value included in the host CAN message (S550). In addition, the battery diagnosis unit 210 may determine whether a line for determining the location of the battery pack 100 is in a normal state or an abnormal state based on a result of comparing the ID values. The battery diagnosis unit 210 may change the ID value to another value (eg, 3 to 8) and repeatedly perform the steps S510, S520, S530, S540, and S550 described above (S560). .

The battery diagnosis unit 210 may generate a diagnosis response message including a result of comparing the ID values (or status information of a line determining the location of the battery pack 100 determined based on the result of comparing the ID values). In addition, the generated diagnosis response message may be transmitted to the battery information collection and transmission unit 250 (S570). In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and the battery pack determined based on the comparison result of the ID value (or the comparison result of the ID value) from the diagnosis response message. Status information of the line that determines the location of (100)), SOC-related information, SOH-related information, alarm/fault-related information, etc. can be obtained, and the obtained information is stored in the battery information collecting unit 260, A diagnostic response message signal, which is a battery information response signal, is transmitted to the battery operation management server 400 through the battery information transmission unit 270 (S575).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of a line that determines the location of the battery pack 100, and transmits the generated diagnosis end message to the battery diagnosis unit 210. Can be (S580).

The battery diagnosis unit 210 may end diagnosis of a line for determining the location of the battery pack 100 when receiving a diagnosis end message from the battery information collection and transmission unit 250, and is a response to the diagnosis end message. An ACK message may be generated, and the ACK message may be transmitted to the battery information collection and transmission unit 250 (S590).

When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the diagnosis of the line for determining the location of the battery pack 100 has ended.

Next, referring to FIG. 6, a method of managing a CAN communication line (eg, a host CAN communication line, a local CAN communication line, etc.) of the battery information management method for an electric vehicle according to an embodiment of the present invention is described. It will be described in detail.

Referring to FIG. 6, the method of managing the CAN communication line is based on a diagnosis request (S605) from the battery information collection and transmission unit 250 receiving a battery information collection and transmission request (S600) through the battery operation management server 400. Can be initiated. For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a CAN communication line, and may transmit the generated diagnosis request message to the battery diagnosis unit 210 (S605). . When the battery diagnosis unit 210 receives the diagnosis request message, it can be seen that diagnosis of the CAN communication line is requested. When a diagnosis of the host CAN communication line is requested, the battery diagnosis unit 210 may check the state of the master-related CAN communication line using the external CAN communication line of the battery pack 100 (S610). When a diagnosis of the local CAN communication line is requested, the battery diagnosis unit 210 may check the state of the CAN communication line related to slaves 1 to 28 using the internal CAN communication line of the battery pack 100 (S610). ).

The battery diagnosis unit 210 may generate a diagnosis response message including status information of the checked CAN communication line, and may transmit the generated diagnosis response message to the battery information collection and transmission unit 250 (S620).

In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state. The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and status information of a CAN communication line, SOC related information, SOH related information, alarm/fault related information from the diagnosis response message And the like, and after storing the obtained information in the battery information collection unit 260, a diagnostic response message signal, which is a battery information response signal, is transmitted to the battery operation management server 400 through the battery information transmission unit 270. Transmit (S625).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of the CAN communication line, and may transmit the generated diagnosis end message to the battery diagnosis unit 210 (S630).

The battery diagnosis unit 210 may terminate the diagnosis of the CAN communication line when receiving a diagnosis end message from the battery information collection and transmission unit 250, and may generate an ACK message that is a response to the diagnosis end message, The ACK message may be transmitted to the battery information collection and transmission unit 250 (S640).

When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, it may determine that the diagnosis of the CAN communication line has ended.

Next, a sensing-related management method (for example, a method for diagnosing the voltage state of the battery pack 100) among the battery information management method for an electric vehicle according to an embodiment of the present invention will be described in detail with reference to FIG. 7. .

Referring to FIG. 7, the sensing-related diagnosis method (ie, the method of diagnosing the voltage state of the battery pack 100) includes collecting battery information and receiving a request for collecting and transmitting battery information (S700) through the battery operation management server 400. It may be initiated by a diagnosis request (S705) of the transmission unit 250. For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting a sensing-related diagnosis, and may transmit the generated diagnosis request message to the battery diagnosis unit 210 (S705). When the battery diagnosis unit 210 receives a diagnosis request message, it can be seen that a sensing related diagnosis is requested.

The battery diagnosis unit 210 may generate a state control message requesting a change to the run-ready state, and transmit the generated state control message to the battery management apparatus 110 (S710).

The battery management device 110 may receive a status control message from the battery diagnosis unit 210, and it can be seen that a change to the run-ready state is requested by the status control message. The battery management device 110 may change its own state to a run-ready state (S720).

The battery management apparatus 110 may measure the output voltage of the battery pack 100 and may generate a report message (eg, master report data) including the measured output voltage information. The battery management apparatus 110 may transmit a report message to the battery diagnosis unit 210 based on host CAN communication (S730).

The battery diagnosis unit 210 may receive a report message from the battery management device 110 and check output voltage information of the battery pack 100 included in the report message. The battery diagnosis unit 210 may measure the voltage of the battery pack 100 through the B+/B- line (S740), and the measured voltage of the battery pack 100 and the battery obtained from the battery management device 110 The output voltage of the pack 100 may be compared (S750). The battery diagnosis unit 210 may generate a diagnosis response message including a voltage comparison result of the battery pack 100 and may transmit the generated diagnosis response message to the battery information collection and transmission unit 250 (S760). .

In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and a voltage comparison result of the battery pack 100 from the diagnosis response message, SOC related information, SOH related information, alarm/ A diagnostic response that is a battery information response signal to the battery operation management server 400 through the battery information transmission unit 270 after the fault-related information can be obtained, and the obtained information is stored in the battery information collection unit 260 A message signal is transmitted (S765).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting termination of a sensing-related diagnosis, and may transmit the generated diagnosis end message to the battery diagnosis unit 210 (S770). When receiving the diagnostic end message from the terminal 130, the battery diagnostic unit 210 may terminate the sensing-related diagnosis, generate an ACK message that is a response to the diagnosis end message, and collect the ACK message and collect battery information. It may be transmitted to the transmission unit 250 (S780). When the ACK message is received from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the sensing-related diagnosis has ended.

Next, referring to FIG. 8, in the battery information management method for an electric vehicle according to an embodiment of the present invention, a cell-related state (eg, a cell monitoring IC (integrated circuit) state, a cell voltage state, a cell temperature state, etc. ) Will be described in detail.

Referring to FIG. 8, a method for diagnosing a cell-related state of the battery pack 100 is a diagnosis of the battery information collection and transmission unit 250 receiving a battery information collection and transmission request (S800) through the battery operation management server 400. It may be initiated by request S805.

For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a cell-related state of the battery pack 100, and transmit the generated diagnosis request message to the battery diagnosis unit 210. Can be transmitted (S805).

When the battery diagnosis unit 210 receives the diagnosis request message, the battery diagnosis unit 210 may know that a diagnosis of a cell-related state of the battery pack 100 is requested.

When a diagnosis of the cell monitoring IC status is requested, the battery diagnosis unit 210 may generate a status request message requesting diagnosis of the cell monitoring IC status, and transmit the status request message to the battery pack 100 (or battery management). It can be transmitted to the device 110 (S810).

When the battery pack 100 (or the battery management apparatus 110) receives the status request message, it can be seen that a diagnosis of the cell monitoring IC status is requested. Accordingly, the battery pack 100 (or the battery management apparatus 110) may check the cell monitoring IC status (S820) and may generate a status response message including the checked result. The battery pack 100 (or the battery management apparatus 110) may transmit a status response message to the battery diagnosis unit 210 (S830). Here, when the diagnosis of the cell monitoring IC status is performed using the host CAN communication line, the cell monitoring IC status may be confirmed through the master report data. When the diagnosis of the cell monitoring IC status is performed using a local CAN communication line, the cell monitoring IC status for the slaves 1 to 28 can be checked.

In addition, when a diagnosis of the cell voltage state is requested, the battery diagnosis unit 210 may generate a state request message requesting diagnosis of the cell voltage state, and transmit the state request message to the battery pack 100 (or battery management). It can be transmitted to the device 110 (S810). When the battery pack 100 (or the battery management apparatus 110) receives the status request message, it can be seen that a diagnosis of the cell voltage status is requested. Accordingly, the battery pack 100 (or the battery management apparatus 110) may check the cell voltage state (S820) and may generate a status response message including the confirmed result. The battery pack 100 (or the battery management apparatus 110) may transmit a status response message to the battery diagnosis unit 210 (S830). Here, when the diagnosis of the cell voltage state is performed using the host CAN communication line, the minimum voltage and the maximum voltage of the cell may be confirmed through the master report data. When the diagnosis of the cell voltage status is performed using a local CAN communication line, the cell voltages for the slaves 1 to 28 can be checked.

In addition, when a diagnosis of the cell temperature condition is requested, the battery diagnosis unit 210 may generate a status request message for requesting diagnosis of the cell temperature condition, and transmit the status request message to the battery pack 100 (or battery management). It can be transmitted to the device 110 (S810). When the battery pack 100 (or the battery management apparatus 110) receives a status request message, it can be seen that a diagnosis of the cell temperature status is requested. Accordingly, the battery pack 100 (or the battery management device 110) can check the cell temperature for the slaves 1 to 28 using a local CAN communication line (S820), and a status response message including the confirmed result Can be created. The battery pack 100 (or the battery management apparatus 110) may transmit a status response message to the battery diagnosis unit 210 (S830).

The battery diagnosis unit 210 may receive a status response message from the battery pack 100 (or the battery management device 110), and check a cell-related status based on information included in the status response message ( S840). For example, the battery diagnosis unit 210 may check the state of the cell monitoring IC, and may check whether the cell monitoring IC is in a normal state or an abnormal state based on the checked state of the cell monitoring IC. In addition, the battery diagnosis unit 210 may check the cell voltage, check the voltage deviation between cells based on the cell voltage, and check whether the cell voltage is in a normal state or an abnormal state based on the confirmed result. In addition, the battery diagnosis unit 210 may check the cell temperature, and may check whether the cell temperature is in a normal state or an abnormal state based on the confirmed result.

The battery diagnostic unit 210 may generate a diagnostic response message including information on the checked cell-related status (eg, cell monitoring IC status, cell voltage status, cell temperature status), and the generated diagnostic response message It may be transmitted to the information collection and transmission unit 250 (S850). In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and cell-related status information, SOC-related information, SOH-related information, and alarms of the battery pack 100 from the diagnosis response message. /Fault-related information can be obtained, and the obtained information is stored in the battery information collection unit 260, and then the battery information response signal is diagnosed to the battery operation management server 400 through the battery information transmission unit 270. Transmit a response message signal (S855).

The battery information collection and transmission unit 250 may generate a diagnosis end message requesting the end of diagnosis of a cell-related state of the battery pack 100 and may transmit the generated diagnosis end message to the battery diagnosis unit 210. (S860). The battery diagnosis unit 210 may terminate the diagnosis of the cell-related state of the battery pack 100 when a diagnosis end message is received from the battery information collection and transmission unit 250, and an ACK message that is a response to the diagnosis end message May be generated, and the generated ACK message may be transmitted to the battery information collection and transmission unit 250 (S870). When the battery information collection and transmission unit 250 receives the ACK message from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that the diagnosis of the cell-related state of the battery pack 100 has ended.

Next, referring to FIG. 9, in the battery information management method for an electric vehicle according to an embodiment of the present invention, a battery pack-related state (eg, a current state, a voltage state, a temperature state, etc.) of the battery pack 100 The management method will be described in detail.

Referring to FIG. 9, a method for diagnosing a battery pack 100 related state (eg, a current state of the battery pack 100, a voltage state, etc.) is requested to collect and transmit battery information through the battery operation management server 400. It may be initiated by a diagnosis request (S905) of the battery information collection and transmission unit 250 received (S900). For example, the battery information collection and transmission unit 250 may generate a diagnosis request message requesting diagnosis of a state related to the battery pack 100, and may transmit the generated diagnosis request message to the battery diagnosis unit 210. Yes (S905). When the battery diagnosis unit 210 receives a diagnosis request message, it can be seen that diagnosis of a state related to the battery pack 100 is requested.

The battery diagnosis unit 210 may generate a state control message requesting a change to the run-ready state, and transmit the generated state control message to the battery management apparatus 110 (S910).

The battery management device 110 may receive a status control message from the battery diagnosis unit 210, and it can be seen that a change to the run-ready state is requested by the status control message. The battery management device 110 may change its own state to a run-ready state (S920).

When a diagnosis of the current state of the battery pack 100 is requested, the battery management apparatus 110 includes a plurality of sub-packs (eg, sub-pack 1, sub-pack 2, etc.) constituting the battery pack 100. ) Each current can be measured, and a report message (eg, master report data) containing the measured current information can be generated. The battery management apparatus 110 may transmit a report message to the battery diagnosis unit 210 (S930). Here, diagnosis of the current state of the battery pack 100 may be performed using host CAN communication.

When a diagnosis of the voltage state of the battery pack 100 is requested, the battery management apparatus 110 includes a plurality of sub-packs (eg, sub-pack 1, sub-pack 2, etc.) constituting the battery pack 100. ) Each input and output voltage can be measured, and a report message (eg, master report data) containing the measured input and output voltage information can be generated. The battery management apparatus 110 may transmit a report message to the battery diagnosis unit 210 (S930). Here, diagnosis of the voltage state of the battery pack 100 may be performed using host CAN communication.

The battery diagnosis unit 210 may receive a report message from the battery management apparatus 110 and check a state related to the battery pack 100 based on information included in the report message (S940). For example, the battery diagnosis unit 210 may check the current of each of a plurality of sub-packs constituting the battery pack 100 and check a zero-set state of the current. In addition, the battery diagnostic unit 210 may check the input and output voltages of each of the plurality of sub-packs constituting the battery pack 100, and when the checked input voltage is "0", a wire for sensing the input voltage ( wire) may be determined to be defective, and if the confirmed output voltage is “0”, it may be determined that the relay, MSD (eg, safety plug), or wire is defective. .

The battery diagnosis unit 210 may generate a diagnosis response message including status information related to the confirmed battery pack 100 and may transmit the generated diagnosis response message to the battery information collection and transmission unit 250 (S950). ). In addition, the diagnostic response message may further include SOC-related information, SOH-related information, and alarm/fault-related information. Here, SOC-related information, SOH-related information, and alarm/fault-related information may be obtained from master report data through host CAN communication. The alarm/fault related information may be used to control the state of the battery management device 110 (eg, a stop state, a run-ready state, etc.) and determine whether the battery pack 100 is in an abnormal state.

The battery information collection and transmission unit 250 may receive a diagnosis response message from the battery diagnosis unit 210, and the battery pack 100 related status information, SOC related information, SOH related information, alarm/fault information from the diagnosis response message A diagnostic response message signal, which is a battery information response signal, to the battery operation management server 400 through the battery information transmission unit 270 after the related information can be obtained and the acquired information is stored in the battery information collection unit 260 Is transmitted (S955).

The battery information collection and transmission unit 250 may generate a diagnosis request message requesting termination of diagnosis of a state related to the battery pack 100 and may transmit the generated diagnosis end message to the battery diagnosis unit 210 (S960). ). When the battery information collection and transmission unit 250 receives the end message, the battery diagnosis unit 210 may end diagnosis of the state related to the battery pack 100 and generate an ACK message that is a response to the diagnosis end message. In addition, the generated ACK message may be transmitted to the battery information collection and transmission unit 250 (S970). When the ACK message is received from the battery diagnosis unit 210, the battery information collection and transmission unit 250 may determine that diagnosis of a state related to the battery pack 100 has ended.

On the other hand, when the battery diagnosis unit 210 receives a request for diagnosis of the temperature state of the battery pack 100 from the battery information collection and transmission unit 250, the temperature of the battery pack 100 is determined by using host CAN communication or local CAN communication. You can check. The battery diagnosis unit 210 may determine whether the temperature sensor is abnormal based on the checked temperature. The battery diagnosis unit 210 may inform the battery information collection and transmission unit 250 of a temperature of the battery pack 100 and whether a temperature sensor is abnormal.

The methods according to the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like alone or in combination. The program instructions recorded on the computer-readable medium may be specially designed and configured for the present invention, or may be known and usable to those skilled in computer software.

Examples of computer-readable media include hardware devices specially configured to store and execute program instructions, such as rom, ram, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. The above-described hardware device may be configured to operate as at least one software module to perform the operation of the present invention, and vice versa.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention defined in the following claims are also present. It belongs to the scope of the invention.

100: battery pack 110: battery management device
200: battery diagnostic device 210: battery diagnostic unit
250: battery information collection and transmission unit 260: battery information collection unit
220: battery information transmission unit
400: battery operation management server

Claims (7)

A battery pack equipped with a battery management device for an electric vehicle,
A battery diagnosis unit that is provided separately from the battery management device and is connected as needed for diagnosis to perform diagnosis on the battery and a diagnosis result performed by the battery diagnosis unit to collect information on the battery A battery diagnosis device including a battery information collection and transmission unit including a battery information collection unit and a battery information transmission unit for transmitting the collected battery information, and
A battery operation management server that integrates and manages a plurality of electric vehicle batteries by checking the information of the battery transmitted from the battery information collection and information transmission unit
Battery information management system for electric vehicles. In claim 1,
The battery information transmission unit
When it is in a short distance from the battery operation management server, the information of the battery can be transmitted through a Bluetooth or Wi-Fi communication method,
Transmitting the information of the battery through a commercial wireless communication means when the battery operation management server and the remote
Battery information management system for electric vehicles. Transmitting a diagnosis request message to a battery diagnosis unit equipped with a battery information collection and transmission unit of a battery management device that has received a request for collecting and transmitting battery information through a battery management server
When the battery diagnosis unit receives a diagnosis request message, transmitting a control message related thereto to a connected battery management device for diagnosis,
The battery management device measuring a state of the battery pack according to the control message,
Transmitting, by the battery management device, a status response message, which is a result of the measured status of the battery pack, to the battery diagnosis unit,
The battery diagnosis unit checking a battery status based on information on a battery pack included in a status response message transmitted from the battery management device,
The battery diagnosis unit generates a diagnosis response message including the checked battery status information and transmits it to the battery information collection and transmission unit, and
The battery information collection and transmission unit in the transmitted diagnosis response message
After storing the included battery status information in a battery information collection unit, transmitting a battery information response signal including the collected battery status information to the battery operation management server through a battery information transmission unit
Including
How to manage battery information for electric vehicles. In paragraph 3,
When the battery information response signal is transmitted from the battery information collection and transmission unit, the battery operation management server performs integrated operation management control on the battery of each electric vehicle based on the battery information response signal.
More inclusive
How to manage battery information for electric vehicles. In claim 3 or 4,
Generating, by the battery information collecting and transmitting unit, a diagnosis request message requesting completion of diagnosis of the battery pack-related state, and transmitting the generated diagnosis end message to the battery diagnosis unit
Further comprising
How to manage battery information for electric vehicles. In clause 5,
When the battery diagnosis unit receives a termination message from the battery information collection and transmission unit, it terminates diagnosis of the related state of the battery pack, generates an ACK message that is a response to the diagnosis termination message, and collects the generated ACK message. And transmitting to the transmission unit
Further comprising
How to manage battery information for electric vehicles. In paragraph 6,
When the battery information collection and transmission unit receives an ACK message from the battery diagnosis unit, determining that diagnosis of the battery pack-related state has ended
Further comprising
How to manage battery information for electric vehicles.

Images