WO2013125850A1 - 멀티 bms에 대한 식별자 할당 시스템 및 방법 - Google Patents
멀티 bms에 대한 식별자 할당 시스템 및 방법 Download PDFInfo
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- WO2013125850A1 WO2013125850A1 PCT/KR2013/001334 KR2013001334W WO2013125850A1 WO 2013125850 A1 WO2013125850 A1 WO 2013125850A1 KR 2013001334 W KR2013001334 W KR 2013001334W WO 2013125850 A1 WO2013125850 A1 WO 2013125850A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
- H02J7/04—Regulation of charging current or voltage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/88—Providing power supply at the sub-station
- H04Q2209/883—Providing power supply at the sub-station where the sensing device enters an active or inactive mode
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Definitions
- the present invention relates to a system and method for allocating an identifier to each BMS of a battery pack having a multi-BMS structure, and more particularly, to a system and method for allocating an identifier to all slave BMSs even when a serial communication network fails. It is about.
- the secondary battery which has high applicability according to the product range and has electrical characteristics such as high energy density, is not only a portable device but also an electric vehicle (EV), a hybrid vehicle (HV, hybrid vehicle), and power storage driven by an electric driving source. It is widely applied to devices (Energy Storage System). Such secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that the primary advantages of drastically reducing the use of fossil fuels are not only generated, but also no by-products are generated due to the use of energy.
- the battery pack applied to the electric vehicle or the like has a structure in which a plurality of cell assemblies including a plurality of unit cells are connected in series to obtain a high output.
- the unit cell may be repeatedly charged and discharged by an electrochemical reaction between components, including a positive electrode and a negative electrode current collector, a separator, an active material, an electrolyte, and the like.
- the battery pack includes power supply control for driving loads such as a motor, measurement of electrical characteristics such as current and voltage, charge / discharge control, voltage equalization control, state of charge (SOC), and the like.
- Algorithm for the estimation of is applied to include a battery management system (BMS) to monitor and control the state of the secondary battery is additionally configured.
- BMS battery management system
- the battery pack of the multi-module structure includes a plurality of batteries, it is limited to control the charge / discharge state of all the batteries using a single BMS. Therefore, in recent years, each battery module included in the battery pack has a BMS installed, one of the BMSs is designated as the master BMS, and the remaining BMSs are designated as the slave BMS. Control technology is used.
- the slave BMS normally waits in a sleep state, starts a start by a start signal of the master BMS, and receives an identifier from the master BMS.
- the start signal can be transmitted to various communication networks.
- serial communication networks are mainly used.
- the serial communication network has advantages in that it is easy to implement a communication structure, has excellent signal transmission characteristics, and can use an existing communication line.
- the serial communication network has a connection method in which a receiver receiving a signal becomes a transmitter and relays the signal to another adjacent receiver connected thereto. Therefore, the serial communication network has a disadvantage in that signal transmission is not performed after a communication section in which a failure occurs when a failure or disconnection occurs in any one section.
- the present invention has been made in view of the prior art as described above, and an object thereof is to provide a system and method for assigning an identifier to a multi-BMS even when a failure occurs in some communication sections of a serial communication network.
- a multi-BMS identifier allocation system including a master BMS connected to a serial communication network and a parallel communication network, and N slave BMSs, where N is an integer of 2 or more.
- N is an integer of 2 or more.
- At least two first and second master communication channels forming a communication interface with a serial communication network and optionally outputting a forward or reverse start signal, and assigning a unique communication identifier to the slave BMS via the parallel communication network;
- the first to Nth slave BMSs start up in response to a forward or reverse start signal received through the serial communication network, receive an identifier from the master BMS through the parallel communication network, and follow a transmission direction of the start signal.
- a start signal is output to an adjacent slave BMS.
- the master BMS and the N slave BMSs are connected in a ring structure through a serial communication network.
- the master BMS outputs a forward start signal through the first master communication channel, and outputs a reverse start signal through the second master communication channel.
- the master BMS may include a master control unit for controlling the output of the forward or reverse start signal.
- said slave BMS comprises at least two slave communication channels forming a communication interface with said serial communication network.
- the slave BMS detects the forward or reverse start signal received through the serial communication network to control the start of the BMS, and the slave control unit for controlling the output of the identifier assignment request signal to the master BMS side through the parallel communication network. It includes.
- said slave control unit comprises masking setting logic for assigning a unique communication identifier from said master BMS and performing masking setting so that it is no longer assigned a unique communication identifier.
- the slave control unit is assigned a unique communication identifier from the master BMS, the start signal for controlling the operation of transmitting the start signal to the adjacent slave BMS side through a serial communication network along the transmission direction of the forward or reverse start signal Contains the transfer logic.
- the master control unit includes capacity check control logic for checking the number of slave BMS assigned the identifier and the charge / discharge capacity of the battery pack using data on the number of unique communication identifiers assigned to the slave BMS. .
- the master control unit when the master control unit does not receive a start signal through the second master communication channel within a preset time after outputting a forward start signal through the first master communication channel, a failure occurs in the serial communication network. And determining fault determination control logic. When the master control unit determines that a failure has occurred in the serial communication network, the master control unit outputs a reverse start signal through the second master communication channel.
- the parallel communication network is a CAN (Controller Area Network) communication network.
- the serial communication network is a daisy chain.
- the master BMS of the multi-BMS identifier assignment system may include a plurality of pairs of first and second master communication channels for outputting a start signal.
- the first to Nth slave BMSs may be connected to each pair of the master communication channels in a ring structure through a serial communication network.
- the multi BMS identifier allocation system according to the present invention may be included in a battery pack.
- the multi-BMS identifier assignment system includes a battery pack; And a load supplied with power from the battery pack.
- the load is an electric drive means or a portable device.
- the multi-BMS identifier allocation system may be one component of a power storage system including a plurality of battery packs.
- a method for assigning a multi-BMS identifier wherein the master BMS includes N first and second master communication channels for selectively outputting a forward or reverse start signal through a serial communication network. Is an integer of 2 or more), wherein the slave BMS is executed in a battery pack connected through a serial communication network and a parallel communication network, wherein (a) the master BMS is connected to the first master communication channel and the second master communication channel according to a normal mode and a failure mode.
- the slave BMS initiates activation in response to a forward or reverse start signal, receives a unique communication identifier from the master BMS via the parallel communication network, and transmits the serial along the transmission direction of the forward or reverse start signal. And outputting a start signal to an adjacent slave BMS through a communication network.
- a failure when a failure occurs in a section of the serial communication network, it can be detected automatically, and by multiplexing the transmission direction of the start signal, all slave BMSs can be activated and assigned identifiers. Therefore, the conventional problem of not being able to assign an identifier to a connected BMS after a failure period in a serial communication network can be solved.
- the identifiers are sequentially assigned to the multi-BMS by using a parallel communication network and a serial communication network, there is no possibility of overlapping the identifiers. Therefore, even if some of the multi-BMS is newly replaced or a new BMS that is already assigned an identifier can be operated so that the identifiers do not overlap, thereby improving the adaptability to the expansion or installation of the BMS and improve the reliability of the battery pack.
- the master BMS since there is no problem that the master BMS should be located at the front or the rear of the serial communication network, there is an advantage in that the arrangement of the master BMS and the slave BMS is free when implementing the battery pack.
- FIG. 1 is a block diagram schematically showing the configuration of a multi-BMS identifier allocation system according to an embodiment of the present invention.
- FIG. 2 is a schematic diagram illustrating a procedure in which a second slave BMS is assigned a unique communication identifier.
- FIG. 3 is an exemplary diagram schematically illustrating a case where a failure occurs in the serial communication network of the multi-BMS identifier allocation system according to an embodiment of the present invention.
- FIG. 4 is an exemplary diagram schematically illustrating a corresponding method of a master BMS when a failure occurs in a serial communication network of a multi-BMS identifier assignment system according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram illustrating a procedure in which an N-1 slave BMS is assigned a unique communication identifier.
- FIG. 6 is a block diagram schematically illustrating a configuration of a multi-BMS identifier allocation system according to another embodiment of the present invention.
- FIG. 7 is a flowchart illustrating a flow of a multi-BMS identifier allocation method according to an embodiment of the present invention.
- FIG. 8 is a flowchart illustrating a flow of a multi-BMS identifier allocation method according to an embodiment of the present invention when a failure occurs in a serial communication network.
- FIG. 1 is a block diagram schematically illustrating a configuration of a multi-BMS identifier allocation system 100 according to an embodiment of the present invention.
- the multi-BMS identifier assignment system 100 includes a master BMS 110 and N slave BMSs 120 (N is an integer of 2 or more).
- the master BMS 110 and the N slave BMSs 120 are connected through a serial communication network 130 and a parallel communication network 140.
- the serial communication network 130 is used when any one of adjacent BMSs applies a start signal to the other in a relay manner.
- the parallel communication network 140 is used to transmit and receive information for allocating a unique communication identifier between the master BMS 110 and the slave BMS 120.
- the serial communication network 130 may be a daisy chain.
- Daisy-chain refers to a bus connection that is connected continuously.
- Daisy chains unlike simple bus connections, support a signal transmission scheme in which one device in a chain can relay signals to another device. All devices connected in a daisy chain can transmit the same signal, but the device receiving the signal can transmit the signal to another device without modulating the signal.
- the parallel communication network 140 may be a controller area network (CAN) communication network. Since the CAN communication network is a communication network well known to those skilled in the art, a detailed description thereof will be omitted.
- CAN controller area network
- the master BMS 110 and the N slave BMSs 120 are connected in a ring structure through the serial communication network 130.
- the ring network has a connection structure in which each terminal is connected to two terminals next to each other to form one continuous network as a ring.
- the master BMS 110 includes at least two first master communication channels 111 and a second master communication channel 112 forming a communication interface with the serial communication network 130.
- the communication channel located on the right side is set as the first master communication channel 111, but is not limited to the illustrated example.
- the first master communication channel 111 does not mean having a priority over the second master communication channel 112. That is, the first master communication channel 111 and the second master communication channel 112 are merely named to distinguish the two master communication channels.
- the master BMS 110 may include a parallel communication channel 141 forming a communication interface with the parallel communication network 140.
- the parallel communication channel 141 is a communication channel used by the master BMS 110 to transmit and receive data for assigning a unique communication identifier to the slave BMS 120 through the parallel communication network 140.
- the master BMS 110 outputs a forward start signal through the first master communication channel 111, and optionally outputs a reverse start signal through the second master communication channel 112.
- a start signal output from the first master communication channel 111 and transmitted in a clockwise direction is set as a forward start signal.
- this is a relative concept for distinguishing the start signal output from the first master communication channel 111 and the second master communication channel 112. Accordingly, the setting of the start signal output from the second master communication channel 112 as the forward start signal is not limited.
- the master BMS 110 includes a master control unit 113 for controlling the output of the forward or reverse start signal.
- the slave BMS 120 includes at least two slave communication channels 121 forming a communication interface with the serial communication network 130.
- the slave BMS 120 includes a parallel communication channel 141 forming a communication interface with the parallel communication network 140.
- the first slave BMS 120- # 1 which has received the forward start signal output from the master BMS 110, starts starting.
- the start signal is a signal that awakes the slave BMS 120 in the sleep state.
- the first slave BMS 120-# 1 is a slave BMS that first receives the forward start signal.
- the first to Nth slave BMSs 120- # 1 to #N are merely named according to the connected positions to distinguish the plurality of slave BMSs. Accordingly, when the counterclockwise start signal is output through the second master communication channel 112, it is also possible to name the Nth slave BMS 120-#N as the first slave BMS.
- the first slave BMS 120-# 1 which has started activation, transmits an identifier assignment request signal to the master BMS 110 through the parallel communication network 140.
- the identifier assignment request signal is a signal indicating that the slave BMS 120 is ready to be assigned a unique communication identifier to the master BMS 110.
- the master BMS 110 Upon receiving the identifier allocation request signal, the master BMS 110 transmits a unique communication identifier to the first slave BMS 120-# 1 through the parallel communication network 140. Then, the first slave BMS 120- # 1 completes the unique communication identifier setting by receiving and storing the unique communication identifier. Thereafter, when the first slave BMS 120-# 1 communicates with the master BMS 110 through the parallel communication network 140, the first slave BMS 120-# 1 transmits data using the set unique communication identifier.
- the slave BMS 120 detects a forward or reverse activation signal received through the serial communication network 130 to control the activation of the BMS, and to the master BMS 110 through the parallel communication network 140. And a slave control unit 122 that controls the output of the identifier assignment request signal.
- the slave control unit 122 is assigned a unique communication identifier from the master BMS 110, the activation to the adjacent slave BMS 120 through the serial communication network 140 along the transmission direction of the forward or reverse start signal Startup signal transmission logic that controls the transmission operation of the signal. Accordingly, the first slave BMS 120-# 1 outputs a start signal to the second slave BMS 120-# 2 through the serial communication network 140.
- FIG. 2 is a schematic diagram illustrating a procedure in which the second slave BMS 120-# 2 is assigned a unique communication identifier.
- the second slave BMS 120-# 2 receives a start signal from the first slave BMS 120-# 1 through the serial communication network 130. Then, the second slave BMS (120- # 2) starts the start in response to the start signal, and outputs an identifier assignment request signal to the master BMS (110) through the parallel communication network (140).
- the master BMS 110 receiving the identifier allocation request signal transmits a unique communication identifier to the second slave BMS 120-# 2 through the parallel communication network 140. Then, the second slave BMS 120- # 2 also completes setting of the unique communication identifier by receiving and storing the unique communication identifier.
- the k-th slave BMS (k is an integer) communicates with the master BMS 110 in the same manner as the first slave BMS 120- # 1, receives and stores a unique communication identifier, and stores the adjacent k +.
- a start signal is output to the first slave BMS.
- the unique communication identifier allocation process for the slave BMS 120 is sequentially completed.
- the master BMS 110 may assign a unique communication identifier to each slave BMS 120 so that the unique communication identifier does not overlap in various ways.
- the unique communication identifier may be associated with the startup sequence of each slave BMS 120 so as not to overlap each other. That is, the master BMS 110 recognizes the startup sequence of each BMS based on the time point at which the unique communication identifier allocation request signal is received through the parallel communication network 140. Then, a unique communication identifier consisting of data sequentially increased or sequentially decreased according to the recognized startup sequence is transmitted to the slave BMS 120 through the parallel communication network 140. Then there is no possibility that the identifiers overlap between the slave BMSs 120.
- Such identifier assignment control logic may be included in the master control unit 113.
- the master BMS 110 is capable of various embodiments for preventing duplication of unique communication identifiers such as unique communication identifier assignment by a pre-stored database, and the present invention is not limited to the above examples.
- the slave control unit 122 includes masking setting logic for assigning a unique communication identifier from the master BMS 110 and performing masking setting so that the unique communication identifier is no longer assigned.
- the slave BMSs 120 connected to the parallel communication network 140 may receive all data signals related to the unique communication identifier assignment of the master BMS 110.
- the slave BMS which has not yet received the start signal does not respond to the unique communication identifier assignment related data signal received through the parallel communication network 140.
- the slave BMS that started the activation may also receive a data signal for the other slave BMS to be assigned a unique communication identifier from the master BMS.
- the slave BMS that started the activation may make an error determination using its own communication identifier.
- a problem may occur in which a slave BMS, which has already been assigned a unique communication identifier, is reassigned a unique communication identifier and two or more slave BMSs are allocated the same unique communication identifier.
- the slave control unit 122 of the slave BMS assigned the unique communication identifier performs masking setting, and thus the unique communication transmitted and received through the parallel communication network 140 between the slave BMS and the master BMS 110 which has been started afterwards.
- the identifier allocation related data signal By setting the identifier allocation related data signal so as not to be mistaken, it is possible to solve the problem of unique assignment of unique communication identifiers.
- the N-th slave BMS 120- # N which receives the forward start signal lastly and is assigned a unique communication identifier, outputs a start signal to the master BMS 110. Then, the master BMS 110 receives a forward start signal through the second master communication channel 112, so that the serial communication network 130 is all connected without failure or disconnection, and all slave BMSs 120 start up. You can confirm that you have been assigned a unique communication identifier.
- the master BMS 110 when the master BMS 110 outputs a reverse start signal through the second master communication channel 112, the master BMS 110 transmits a reverse start signal through the first master communication channel 111.
- the serial communication network 130 is all connected without failure or disconnection and that all the slave BMSs 120 have started and are assigned a unique communication identifier.
- the master control unit 113 uses the data for the number of unique communication identifiers assigned to the slave BMS 120 to determine the number of slave BMSs 120 assigned the identifier and the charge / discharge capacity of the battery pack. Includes capacity check control logic to verify.
- the master control unit 113 outputs a forward start signal through the first master communication channel 111, and then receives a forward start signal through the second master communication channel 112 within a preset time. If not, the failure determination control logic for determining that a failure has occurred in the serial communication network 130 is included.
- FIG 3 is a diagram schematically illustrating a case where a failure occurs in the serial communication network 130 of the multi-BMS identifier allocation system 100 according to an embodiment of the present invention.
- FIG. 3 there is illustrated a situation where a failure occurs because the serial communication network 130 connecting the second slave BMS 120-# 2 and the third slave BMS 120-# 3 is disconnected. Therefore, only the first and second slave BMSs 120- # 1 and 120- # 2 of the N slave BMSs can start startup, and the remaining slave BMSs 120- # 3 through 120- # N start startup. A problem arises that prevents it from starting.
- the master control unit 113 outputs a forward start signal through the first master communication channel 111, and then uses the failure determination control logic to set the second master communication channel ( Through 112, it is determined whether a start signal is received. However, since the serial communication network 130 connecting the second slave BMS 120-# 2 and the third slave BMS 120-# 3 is disconnected, the second master communication channel 112 within a preset time. No start signal is received via. Therefore, the master control unit 113 determines that a failure has occurred in the serial communication network 130.
- the time for waiting for the master control unit 113 to receive the start signal can be variously set. For example, a time taken for a start signal to be transmitted between adjacent slave BMSs 120, a communication speed of the serial communication network 130 and a parallel communication network 140, a unique communication identifier allocation rate for each slave BMS 120, and the like. In consideration of this, it is possible to set the waiting time.
- FIG. 4 is a diagram schematically illustrating a corresponding method of the master BMS 110 when a failure occurs in the serial communication network 130 of the multi-BMS identifier assignment system 100 according to an embodiment of the present invention.
- the master control unit 113 when it is determined that a failure occurs in the serial communication network 130, the master control unit 113 outputs a reverse start signal through the second master communication channel 112.
- the N-th slave BMS 120- # N receiving the reverse start signal from the master BMS 110 starts the start and outputs an identifier allocation request signal to the master BMS 110 through the parallel communication network 140. do.
- the master BMS 110 that receives the identifier allocation request signal sends the unique communication identifier to the N-th slave BMS 120-#N as the parallel communication network 140. Send it through. Then, the N-th slave BMS 120- # N also receives and stores the unique communication identifier to complete setting of the unique communication identifier.
- the N-th slave BMS 120- # N outputs a start signal to an adjacent N-th slave BMS 120- # N-1 along the direction in which the reverse start signal is received.
- only the signal transmission direction is different from the first slave BMS 120- # 1 outputting a start signal to an adjacent second slave BMS 120- # 2 according to a forward start signal. It can be seen that they are substantially the same.
- FIG. 5 is a schematic diagram illustrating a procedure in which an N-1th slave BMS 120-# N-1 is assigned a unique communication identifier.
- the N-th slave BMS 120-# N-1 receives a start signal from the N-th slave BMS 120-#N through the serial communication network 130.
- the procedure after receiving the start signal that is, the process of starting the N-1 slave BMS 120-# N-1 and assigning a unique communication identifier is the same as described above. If this process is repeated, each slave BMS installed along the transmission direction of the reverse start signal is sequentially started and assigned a unique communication identifier from the master BMS 110. Therefore, finally, the third slave BMS 120- # 3, which failed to receive the forward start signal due to the failure of the serial communication network 140, starts to start and is assigned a unique communication identifier.
- the present invention solves the problem that some slave BMS 120 cannot be activated due to a failure in the serial communication network 140 and thus cannot be assigned a unique communication identifier, and the transmission direction (forward and The reverse direction can be overcome by using the multiplexed start signal.
- FIG. 6 is a block diagram schematically illustrating a configuration of a multi-BMS identifier allocation system 100 according to another embodiment of the present invention.
- the master BMS 110 of the multi-BMS identifier assignment system 100 includes only a single communication pair and a parallel communication channel 141. It is not limited to this.
- the master BMS 110 outputs a forward start signal and a reverse start signal according to the charge / discharge capacity required for the battery pack, the connection distance of the communication network, the performance of the master control unit 113, and the like. It may include a pair of communication channels 114 and a plurality of parallel communication channels 141.
- the first to Nth slave BMSs 120-# 1 to 120-#N may be connected in a ring structure to the pair 114 of each master communication channel through a serial communication network 130, and master control may be performed.
- the unit 113 may generally control the startup and the unique communication identifier allocation process of the slave BMS 120 using the forward start signal and the reverse start signal for each group of the slave BMSs 120.
- the slave BMS 120 is shown in a ring structure connected to the pair 114 of all master communication channels, the connection of the slave BMS 120 is connected to the pair 114 of some master communication channels as necessary. Obviously, it can be omitted.
- each of the first to Nth slave BMSs 120-# 1 to 120-#N may control the charge / discharge operation of one or more battery cells in charge thereof.
- each slave BMS 120 does not separately show a battery cell in charge of control.
- the slave BMS 120 includes charge and discharge control, smoothing (equalization) control, switching, electrical characteristic value measurement and monitoring, error indication, on / off control, SOC (state of charge) estimation, etc. It is possible to execute various control logics applicable at the level of those skilled in the art.
- the master control unit 113 and the slave control unit 122 are processors, application-specific integrated circuits (ASICs), other chipsets, logic circuits known in the art to execute the various control logics described above. , Registers, communication modems, data processing devices, and the like.
- the master control unit 113 may be implemented as a set of program modules.
- the program module may be stored in a memory and executed by a processor.
- the memory may be inside or outside the processor and may be connected to the processor by various well-known means.
- Memory is a general term for a device in which information is stored regardless of a device type, and does not refer to a specific memory device.
- the multi-BMS identifier assignment system 100 may be a component of a battery pack including a plurality of battery cells. That is, the plurality of battery cells may be divided into N groups, and each cell group may be combined with the N slave BMSs 120 in a 1: 1 relationship. Obviously battery cells within each cell group can be connected in series and / or in parallel. It is also apparent that the concept of a battery pack may be extended not only to a collection of battery cells but also to a collection of various battery units grouped together.
- the multi-BMS identifier allocation system 100 may be a component of a power storage system in which at least one battery pack is connected in series or in parallel.
- the power storage system is electrically coupled to the grid grid to store the power generated by the surplus power generation or renewable energy, and to supply power to the power system to stabilize the frequency of the power system or to improve the economics of power use. Can be.
- the multi-BMS identifier allocation system 100 may be a component of a battery driving system including a load powered from a battery pack.
- Examples of the battery driving system include an electric vehicle (EV), a hybrid vehicle (HEV), an electric bicycle (E-Bike), a power tool, a power storage device, an energy storage system, an uninterruptible power supply, a UPS, Portable computers, portable telephones, portable audio devices, portable video devices, and the like.
- An example of the load may be a motor that provides rotational power by the power supplied by the battery or a power conversion circuit that converts the power supplied by the battery into power required by various circuit components.
- FIG. 7 is a flowchart illustrating a flow of a multi-BMS identifier allocation method according to an embodiment of the present invention.
- step S210 the master BMS 110 outputs a forward start signal through the first master communication channel 111.
- the master BMS 110 moves to step S211 to monitor whether the identifier allocation request signal is received through the parallel communication network.
- step S213 the master BMS 110 moves to step S213 to monitor whether the forward start signal has been received through the second master communication channel 112.
- the first slave BMS 120- # 1 in the sleep state monitors the reception of the forward or reverse start signal (step S220). After receiving the forward start signal from the master BMS 110, the first slave BMS 120- # 1 (YES in step S220) starts the start in response to the start signal (step S221). Next, in step S222, the first slave BMS 120-# 1 outputs an identifier assignment request signal to the master BMS 110 through a parallel communication network.
- the master BMS 110 When the master BMS 110 receives the identifier assignment request signal through the parallel communication network (YES in step S211), it assigns a unique communication identifier through the parallel communication network (step S212).
- the first slave BMS 120- # 1 (YES in step S223) that has received the unique communication identifier via the parallel communication network stores the unique communication identifier (step S224).
- the first slave BMS 120- # 1 performs masking setup so that it is no longer assigned a unique communication identifier.
- the first slave BMS 120- # 1 outputs a start signal to the adjacent second slave BMSs 120- # 2 along the transmission direction of the forward start signal.
- the second slave BMS 120- # 2 which has received the start signal from the first slave BMS 120- # 1, performs steps S220 through S225 substantially the same.
- the third slave BMS 120- # 3 to the N-th slave BMS 120- # N also receive a start signal from the slave BMS 120 which has started the start and start the start, and the above-mentioned through the parallel communication network.
- a unique communication identifier is allocated from the master BMS 110.
- the last N-th slave BMS 120- # N receives a unique communication identifier and then outputs a start signal to the master BMS 110.
- the master BMS 110 receives a start signal from the N-th slave BMS 120 through the second master communication channel 112 (YES in S213).
- the master BMS 110 receives the start signal through the second master communication channel 112, so that the serial communication network is all connected without failure or disconnection, and all slave BMSs 120 start the start and provide a unique communication identifier. You can check the assignment.
- the master BMS 110 checks the number of slave BMSs 120 assigned the identifier and the charge / discharge capacity of the battery pack using data on the number of unique communication identifiers assigned to the slave BMS 120. It may be (step S214).
- FIG. 8 is a flowchart illustrating a flow of a multi-BMS identifier allocation method according to an embodiment of the present invention when a failure occurs in a serial communication network.
- the master BMS 110, the first slave BMS 120-# 1, and the second slave BMS 120-# 2 perform the same steps S210 to S225 described above. However, since the serial communication network between the second slave BMS 120- # 2 and the third slave BMS 120- # 3 is disconnected, the third slave BMS 120- # 3 sends a forward start signal to the second slave BMS. It does not receive from (120- # 2).
- the master BMS 110 outputs a start signal through the first master communication channel 111 and monitors whether the start signal is received through the second master communication channel 112 (step S213).
- the slave BMS 120 determines that all of the start-up has finished and terminates the processor (YES in step S213).
- step S213 it is checked whether the preset waiting time has elapsed. If the waiting time has elapsed (YES in step S215), it is determined that a failure has occurred in the serial communication network (step S216).
- the master BMS 110 outputs a reverse start signal to the Nth slave BMS 120- # N through the second master communication channel 112 (step S217).
- the N-th slave BMS 120- # N starts the start in response to the reverse start signal, and receives a unique communication identifier from the master BMS 110 through the parallel communication network (steps S220 to S225).
- Each of the slave BMSs 120- # N-1, ..., 120- # 3 installed along the transmission direction of the reverse start signal receives the start signal from the adjacent slave BMS in the reverse direction and starts the start and sets a unique communication identifier. It is assigned from the master BMS (110).
- the fourth slave BMS 120-# 4 After receiving the unique communication identifier, the fourth slave BMS 120-# 4 outputs a start signal to the last third slave BMS 120-# 3. Therefore, it is possible to start up to the third slave BMS (120- # 3) that the start signal was not transmitted due to the disconnection of the communication network and can be assigned a unique communication identifier from the master BMS (110). As a result, all slave BMSs 120 start up and are assigned a unique communication identifier.
- the present invention when a failure occurs in a part of the serial communication network, it can be detected automatically, and by multiplexing the transmission direction of the start signal, all the slave BMSs can be activated and assigned an identifier. Therefore, the conventional problem of not being able to assign an identifier to a connected BMS after a failure period in a serial communication network can be solved.
- identifiers are sequentially assigned to multiple BMSs by using a parallel communication network and a serial communication network, there is no possibility of overlapping identifiers. Therefore, even if some of the multi-BMS is newly replaced or a new BMS that is already assigned an identifier can be operated so that the identifiers do not overlap, thereby improving the adaptability to the expansion or installation of the BMS and improve the reliability of the battery pack.
- the master BMS since there is no problem that the master BMS should be located at the front or the rear of the serial communication network, there is an advantage in that the arrangement of the master BMS and the slave BMS is free when implementing the battery pack.
- each component of the multi-BMS identifier allocation system 100 of the present invention illustrated in FIGS. 1 to 6 should be understood as logically divided components rather than physically divided components. do.
- each configuration corresponds to a logical component in order to realize the technical idea of the present invention, so that even if each component is integrated or separated, if the function performed by the logical configuration of the present invention can be realized, it is within the scope of the present invention. It should be construed that the components that perform the same or similar functions are to be interpreted as being within the scope of the present invention regardless of whether they correspond in terms of their names.
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Abstract
Description
Claims (26)
- 직렬 통신망 및 병렬 통신망에 접속된 마스터 BMS와 N개(N은 2 이상의 정수)의 슬레이브 BMS를 포함하는 배터리 팩의 멀티 BMS에 대한 고유 통신 식별자 할당 시스템에 있어서,상기 직렬 통신망과 통신 인터페이스를 형성하며 선택적으로 순방향 또는 역방향 기동 신호를 출력하는 적어도 두 개의 제1 및 제2마스터 통신 채널을 포함하고, 상기 슬레이브 BMS에게 상기 병렬 통신망을 통해 고유 통신 식별자를 할당하는 마스터 BMS; 및상기 직렬 통신망을 통해 수신된 순방향 또는 역방향 기동 신호에 응답하여 기동을 개시하고, 상기 마스터 BMS로부터 상기 병렬 통신망을 통해 식별자를 할당 받고, 기동 신호의 전송 방향을 따라 인접하는 슬레이브 BMS에게 기동 신호를 출력하는 제1 내지 제N 슬레이브 BMS;를 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 마스터 BMS 및 상기 N개의 슬레이브 BMS는, 직렬 통신망을 통해 링 구조로 연결된 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 마스터 BMS는, 상기 제1 마스터 통신 채널을 통해 순방향 기동 신호를 출력하고, 상기 제2 마스터 통신 채널을 통해 역방향 기동 신호를 출력하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제3항에 있어서,상기 마스터 BMS는, 상기 순방향 또는 역방향 기동 신호의 출력을 제어하는 마스터 제어 유닛을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 슬레이브 BMS는, 상기 직렬 통신망과 통신 인터페이스를 형성하는 적어도 두 개의 슬레이브 통신 채널을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 슬레이브 BMS는, 상기 직렬 통신망을 통해 수신되는 순방향 또는 역방향 기동 신호를 감지하여 BMS의 기동을 제어하고, 상기 병렬 통신망을 통해 상기 마스터 BMS측으로 식별자 할당 요청 신호의 출력을 제어하는 슬레이브 제어 유닛을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제6항에 있어서,상기 슬레이브 제어 유닛은, 상기 마스터 BMS로부터 고유 통신 식별자를 할당받고, 더 이상 고유 통신 식별자를 할당받지 않도록 마스킹 설정을 수행하는 마스킹 설정 로직을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제6항에 있어서,상기 슬레이브 제어 유닛은, 상기 마스터 BMS로부터 고유 통신 식별자를 할당받고, 상기 순방향 또는 역방향 기동 신호의 전송 방향을 따라 직렬 통신망을 통해 인접하는 슬레이브 BMS에게 상기 기동 신호의 전송 동작을 제어하는 기동 신호 전송 로직을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제4항에 있어서,상기 마스터 제어 유닛은, 상기 슬레이브 BMS에게 할당한 고유 통신 식별자의 개수에 대한 데이터를 이용하여 식별자를 할당받은 슬레이브 BMS의 개수 및 배터리 팩의 충방전 용량을 확인하는 용량 체크 제어 로직을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제4항에 있어서,상기 마스터 제어 유닛은, 상기 제1 마스터 통신 채널을 통해 순방향 기동 신호를 출력한 후 미리 설정된 시간 내에 상기 제2 마스터 통신 채널을 통해 기동 신호를 수신하지 못 하면 상기 직렬 통신망에 고장이 발생한 것으로 판단하는 고장 판단 제어 로직을 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제10항에 있어서,상기 마스터 제어 유닛은, 상기 직렬 통신망에 고장이 발생한 것으로 판단한 경우, 상기 제2 마스터 통신 채널을 통해 역방향 기동 신호를 출력하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 병렬 통신망은 CAN 통신망인 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 직렬 통신망은 데이지 체인인 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항에 있어서,상기 마스터 BMS는, 기동 신호를 출력하는 제1 및 제2 마스터 통신 채널의 페어를 다수 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제14항에 있어서,상기 각 마스터 통신 채널의 페어에 상기 제1 내지 제N 슬레이브 BMS가 직렬 통신망을 통해 링 구조로 연결된 것을 특징으로 하는 멀티 BMS 식별자 할당 시스템.
- 제1항 내지 제15항 중 어느 한 항에 따른 멀티 BMS 식별자 할당 시스템을 포함하는 배터리 팩.
- 제16항에 따른 배터리 팩; 및상기 배터리 팩으로부터 전력을 공급받는 부하;를 포함하는 것을 특징으로 하는 배터리 구동 시스템.
- 제17항에 있어서,상기 부하는 전기구동 수단 또는 휴대용 기기임을 특징으로 하는 배터리 구동 시스템.
- 제16항에 따른 다수의 배터리 팩을 포함하는 전력 저장 시스템.
- 직렬 통신망을 통해 선택적으로 순방향 또는 역방향 기동 신호를 출력하는 제1 및 제2 마스터 통신 채널을 포함하는 마스터 BMS와 N개(N은 2 이상의 정수)의 슬레이브 BMS가 직렬 통신망 및 병렬 통신망을 통해 연결된 배터리 팩의 멀티 BMS에게 식별자를 할당하는 방법에 있어서,(a) 상기 마스터 BMS가 정상 모드와 고장 모드 별로 상기 제1 마스터 통신 채널과 제2 마스터 통신 채널 중 어느 하나를 선택하고 선택된 통신 채널에 대응하는 방향으로 상기 직렬 통신망을 통해 기동 신호를 출력하는 단계; 및(b) 상기 슬레이브 BMS가 순방향 또는 역방향 기동 신호에 응답하여 기동을 개시하고, 상기 병렬 통신망을 통해 상기 마스터 BMS로부터 고유 통신 식별자를 할당받고, 상기 순방향 또는 역방향 기동 신호의 전송 방향을 따라 상기 직렬 통신망을 통해 인접하는 슬레이브 BMS에게 기동 신호를 출력하는 단계;를 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제20항에 있어서,상기 마스터 BMS 및 상기 N개의 슬레이브 BMS는, 직렬 통신망을 통해 링 구조로 연결된 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제20항에 있어서, 상기 (b)단계에서,상기 슬레이브 BMS가 기동 신호에 응답하여 기동을 개시하고, 상기 마스터 BMS측으로 상기 병렬 통신망을 통해서 식별자 할당 요청 신호를 출력하는 단계;를 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제22항에 있어서, 상기 (b)단계에서,상기 슬레이브 BMS가 상기 마스터 BMS로부터 고유 통신 식별자를 할당받고, 더 이상 고유 통신 식별자를 할당받지 않도록 마스킹 설정을 수행하는 단계;를 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제20항에 있어서, 상기 (a) 단계에서,상기 마스터 BMS가 상기 제1마스터 통신 채널을 통해 순방향 기동 신호를 출력한 후 미리 설정된 대기 시간 내에 상기 제2 마스터 통신 채널을 통해 기동 신호를 수신하지 못 하면, 상기 직렬 통신망에 고장이 발생한 것으로 판단하는 단계;를 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제24항에 있어서, 상기 (a) 단계에서,상기 마스터 BMS가 상기 직렬 통신망에 고장이 발생한 것으로 판단한 경우,상기 마스터 BMS가 상기 제2 마스터 통신 채널을 통해 역방향 기동 신호를 출력하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
- 제20항에 있어서,상기 마스터 BMS가 상기 슬레이브 BMS에게 할당한 고유 통신 식별자의 개수에 대한 데이터를 이용하여 식별자를 할당받은 슬레이브 BMS의 개수 및 배터리 팩의 충방전 용량을 확인하는 단계;를 더 포함하는 것을 특징으로 하는 멀티 BMS 식별자 할당 방법.
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CN201380002491.7A CN103718425B (zh) | 2012-02-20 | 2013-02-20 | 用于将标识符分配给多bms的系统和方法 |
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Also Published As
Publication number | Publication date |
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EP2725686A4 (en) | 2015-06-17 |
EP2725686A1 (en) | 2014-04-30 |
EP2725686B1 (en) | 2017-08-23 |
JP5979397B2 (ja) | 2016-08-24 |
CN103718425B (zh) | 2016-02-10 |
JP2015507451A (ja) | 2015-03-05 |
KR101539689B1 (ko) | 2015-07-27 |
CN103718425A (zh) | 2014-04-09 |
US20140091770A1 (en) | 2014-04-03 |
KR20130095424A (ko) | 2013-08-28 |
US8933671B2 (en) | 2015-01-13 |
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