WO2012124231A1 - Système de télécommunication, unité d'accumulateur et système de batterie d'accumulateurs - Google Patents

Système de télécommunication, unité d'accumulateur et système de batterie d'accumulateurs Download PDF

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Publication number
WO2012124231A1
WO2012124231A1 PCT/JP2011/079314 JP2011079314W WO2012124231A1 WO 2012124231 A1 WO2012124231 A1 WO 2012124231A1 JP 2011079314 W JP2011079314 W JP 2011079314W WO 2012124231 A1 WO2012124231 A1 WO 2012124231A1
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WIPO (PCT)
Prior art keywords
control unit
unit
battery
storage battery
communication
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Application number
PCT/JP2011/079314
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English (en)
Japanese (ja)
Inventor
圭介 淺利
孝義 阿部
浩二 松村
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三洋電機株式会社
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Publication of WO2012124231A1 publication Critical patent/WO2012124231A1/fr

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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
    • H01M10/46—Accumulators structurally combined with charging apparatus
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
    • 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
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • 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

Definitions

  • the present invention relates to a communication system, a storage battery unit, and a storage battery system.
  • an assembled battery formed by connecting a plurality of battery packs in series is known.
  • the battery pack in this assembled battery includes a module battery formed by connecting a plurality of storage battery cells in series, and a cell controller that monitors and controls the battery state of each storage battery cell constituting the module battery.
  • Patent Document 1 discloses a communication system for an assembled battery (for example, one using metal communication by RS-485). That is, each cell controller included in each battery pack is connected to a battery controller that controls charging / discharging of the assembled battery via a communication cable. Thereby, the battery controller can perform charge / discharge control of the assembled battery in consideration of the state of the module battery of each battery pack.
  • the cell controller is provided with a communication interface and a communication insulation circuit for insulation from the network.
  • a photocoupler is used for this communication isolation circuit.
  • An object of the present invention is to provide a communication system capable of reducing standby power.
  • this invention assumes providing a suitable technique as a communication system for assembled batteries, it is not the meaning limited to the communication system for assembled batteries.
  • Another object of the present invention is to provide a storage battery unit and a storage battery system that include the communication system described above and can reduce power consumption in the battery pack.
  • a communication system provides optical communication that enables optical communication between a first control unit, a second control unit, and the first control unit and the second control unit.
  • a determination switching unit that causes the second control unit to transition from a sleep state to a communicable state based on an input signal input via the optical communication unit according to a command from the first control unit, It is characterized by comprising.
  • a storage battery unit of the present invention is included in a management unit having a first control unit, a battery pack managed by the management unit, the first control unit, and the battery pack. Based on an optical communication unit that enables optical communication with the second control unit, and an input signal that is provided in the battery pack and is input via the optical communication unit according to a command of the first control unit, And a determination switching unit that causes the second control unit to transition from the sleep state to the communicable state.
  • a storage battery system includes a storage battery unit having the above-described configuration and a power conversion unit connected to the storage battery unit.
  • a communication system capable of reducing standby power can be provided.
  • the storage battery unit and storage battery system which can suppress that the capacity
  • the figure which shows the whole structure of the storage battery system which concerns on one Embodiment of this invention The figure which shows the structure of the storage battery unit of 1st Embodiment. The figure which shows the structure of the battery pack with which the storage battery unit of 1st Embodiment is provided. The figure for demonstrating the communication system containing the determination switch circuit with which the storage battery unit of 1st Embodiment is equipped. The figure which shows the structure of the storage battery unit of 2nd Embodiment. The figure for demonstrating the communication system containing the determination switch circuit with which the storage battery unit of 2nd Embodiment is provided. The figure which shows the modification of this invention Schematic diagram for explaining safety standards for photocouplers
  • the insulation distance is the shortest distance between the light-emitting side and the light-receiving side insulated with resin (L0 in FIG. 8).
  • the creepage distance is the shortest distance between the light emitting side terminal and the light receiving side terminal along the package surface (L1 in FIG. 8).
  • the spatial distance is a distance that is the shortest distance between the light emitting side terminal and the light receiving side terminal in the space outside the resin (L2 in FIG. 8).
  • the applicant will replace communication between the battery pack and the BMU (Battery Management Unit) that controls the battery pack with optical communication instead of metal communication.
  • BMU Battery Management Unit
  • FIG. 1 is a diagram showing an overall configuration of a storage battery system BS according to an embodiment of the present invention.
  • a thin solid line indicates a signal line
  • a thick solid line indicates a power line.
  • the storage battery system BS includes a master controller 1, a HUB 2, a power converter management unit 3, a power converter (PCS; Power Conditioning System) 4, and a storage battery unit 5. .
  • PCS Power Conditioning System
  • storage battery unit 5 there are eight power converters 4, and five storage battery units 5 are connected in parallel to each power converter 4, for a total of 40. In FIG. 1, only some storage battery units 5 are shown.
  • the master controller 1 is a control device that controls charging and discharging in the storage battery system BS.
  • the master controller 1 is communicably connected to the power converter management unit 3 and the BMU (Battery Management Unit) 51 (40 in this embodiment) provided in the storage battery unit 5 via the hub 2. Yes.
  • BMU Battery Management Unit
  • the power converter management unit 3 has a function of receiving the charge / discharge control command from the master controller 1 and managing the operation of a plurality (eight in the present embodiment) of the power converters 4.
  • the plurality of power converters 4 are managed by one power converter management unit 3, but other configurations may be employed. That is, for example, a configuration in which one power converter management unit is provided for each power converter may be employed. If comprised in this way, when the malfunction occurs in the power converter management part 3, the situation where the storage battery system BS whole stops will be avoided.
  • the power converter 4 includes, for example, a bidirectional AC / DC converter and a bidirectional DC / DC converter (both not shown).
  • the power converter 4 performs power conversion between an external power source (not shown) and the assembled battery 50 provided in the storage battery unit 5.
  • the power converter 4 performs power conversion between the assembled battery 50 and an external load (not shown).
  • the power of the external power source is stored in the assembled battery 50 by the function of the power converter 4 controlled by the power converter management unit 3. Further, the power stored in the assembled battery 50 is discharged to an external load by the function of the power converter 4.
  • Each of the plurality of storage battery units 5 includes an assembled battery 50, a BMU 51, and a BSU (Battery Switching Unit) 52.
  • the assembled battery 50 has, for example, a configuration in which a plurality of battery packs are connected in series, or a configuration in which a plurality of battery packs are connected in series. . Details of the configuration of the assembled battery 50 will be described later.
  • the BSU 52 is arranged between the power converter 4 and the assembled battery 50 and switches between a state in which the assembled battery 50 and the power converter 4 are connected and a state in which the assembled battery 50 is opened under the control of the BMU 51. .
  • the BMU 51 can communicate with each of the battery packs constituting the assembled battery 50 via an optical communication line, and manages (controls) the assembled battery 50.
  • This BMU 51 is an embodiment of the management unit of the present invention.
  • the BMU 51 requests battery data from each battery pack constituting the assembled battery 50.
  • the BMU 51 acquires the battery state of each battery pack.
  • the BMU 51 determines that a problem has occurred in the battery pack based on the acquired battery data
  • the BMU 51 opens the BSU 52 to disconnect the assembled battery 50 from the power converter 4.
  • the assembled battery 50 has a configuration in which a plurality of battery packs connected in series are arranged in parallel, for example, a single row including a defective battery pack (a set of battery packs connected in series) Only the column) may be opened.
  • the BSU 52 needs to be provided with a plurality of switches.
  • the BMU 51 determines that a problem has occurred in the battery pack, the BMU 51 collectively transmits the fact to the master controller 1 together with the battery data.
  • a thin solid line indicates a communication line
  • a thick solid line indicates a power line
  • the assembled battery 50 has a configuration in which a plurality (N) of battery packs 500 are connected in series (a configuration consisting of only one row of battery packs). It has become.
  • the BSU 52 is connected to one end of the plurality of battery pack rows connected in series.
  • the BSU 52 is connected to the power converter 4 as described above.
  • what is necessary is just to determine suitably the number of the battery packs 500 which comprise the assembled battery 50 according to the voltage requested
  • each of the BMU 51 and each battery pack 500 includes an optical transmission module Tx (black circle in FIG. 2) and an optical reception module Rx (white circle in FIG. 2).
  • an optical fiber (communication line) F is appropriately connected between the optical transmission module Tx and the optical reception module Rx. Note that the optical fiber F, the optical transmission module Tx, and the optical reception module Rx shown here are embodiments of the optical communication unit of the present invention.
  • the pack information communication performed between the BMU 51 and each battery pack 500 is divided into two types, downlink communication and uplink communication.
  • the downlink communication refers to communication in which the BMU 51 requests battery data from each battery pack 500 (communication for transmitting a battery data request command).
  • the uplink communication refers to communication in which the battery pack 500 that has received the battery data request command transmits battery data to the BMU 51 as a response.
  • the optical fiber F provided on the left side with respect to the assembled battery 50 corresponds to a communication line for downstream communication
  • the optical fiber F provided on the right side with respect to the assembled battery 50 is used for upstream communication. Corresponds to communication line.
  • downlink communication is possible by connecting the BMU 51 and each battery pack 500 in a so-called daisy chain.
  • the battery pack 500 in which the battery pack 500 exists on both sides of the battery pack rows connected in series will be described.
  • the optical transmission module Tx is connected by an optical fiber F to the light receiving module Rx on one side of the adjacent battery packs 500 (the upper battery pack corresponds to FIG. 2).
  • the optical reception module Rx is connected to the optical transmission module Tx on the other side of the adjacent battery packs 500 (the lower battery pack in FIG. 2 corresponds) by an optical fiber F.
  • the optical transmission module Tx is connected to the optical reception module Rx of the BMU 51 through the optical fiber F.
  • the optical receiving module Rx is connected to the optical transmitting module Tx of the battery pack 500 (corresponding to B-2 in FIG. 2) on the adjacent side by an optical fiber F.
  • the other of the battery packs 500 at both ends is connected to the optical reception module Rx of the battery pack 500 in which the optical transmission module Tx is adjacent (upper in FIG. They are connected by an optical fiber F.
  • the optical reception module Rx is connected to the optical transmission module Tx of the BMU 51 through an optical fiber F.
  • request commands transmitted from the BMU 51 are sequentially sent to each battery pack 500 in the direction from the battery pack BN to the battery pack B-1.
  • the optical transmission module Tx of the battery pack B-1 and the optical reception module Rx of the BMU 51 need not be connected.
  • the configuration is performed as in the present embodiment. Is preferred.
  • the request command transmitted from the BMU 51 is sent in the direction from the battery pack BN to the battery pack B-1, but the battery pack B-1 to the battery pack BN Of course, it does not matter if a configuration is employed that is sent in the direction toward the head.
  • each battery pack 500 is connected in a one-to-one relationship, so that upstream communication is possible. That is, each battery pack 500 is provided with another optical transmission module Tx, in addition to the optical transmission module Tx used for downstream communication. Then, the optical transmission module Tx is connected to the optical reception module Rx provided in the BMU 51 corresponding thereto by an optical fiber F.
  • each battery pack 500 that has received a battery data request command can directly transmit battery data to the BMU 51 without passing through another battery pack 500. Thereby, it is possible to suppress the collapse of the capacity balance between the battery packs 500.
  • the battery data request command transmitted from the BMU 51 may be transmitted separately for each battery pack 500 (a battery data request command is transmitted by specifying an ID for each battery pack).
  • the form is different from that. That is, in this embodiment, the battery data request command is simultaneously notified (broadcasted) to each battery pack 500. Thereby, collapse of the capacity balance between the battery packs 500 can be suppressed.
  • the battery pack 500 includes a plurality of storage battery cells 501, a battery state detection unit 502, a pack information control unit 503, an optical module 504, and a determination switch circuit 505.
  • the plurality of storage battery cells 501 are connected in series and parallel.
  • the storage battery cell 500 is a secondary battery such as a lithium battery, for example.
  • the arrangement configuration of the plurality of storage battery cells 501 may be appropriately determined as necessary. For example, 24 storage battery cells 501 can be connected in parallel, and the storage battery cell group connected in parallel in this way can be connected in 13 stages in series.
  • the number of the storage battery cells 501 provided in the battery pack 500 may not be plural but one. Further, in the case where a plurality of storage battery cells 501 are arranged in the battery pack 500, the plurality of storage battery cells 501 may be simply connected in series (not connected in parallel).
  • the battery state detection unit 502 detects the voltage value of each stage where the storage battery cells 501 are connected in parallel, and also detects the current value and voltage value between the + and-electrodes of the battery pack 500. In addition, the battery state detection unit 502 detects the SOC (State Of Charge) of the battery pack 500 and the temperature of the battery pack 500. The data detected by the battery state detection unit 502 can be output to the pack information control unit 503.
  • SOC State Of Charge
  • the SOC is a parameter representing the ratio of the dischargeable capacity (remaining capacity) to the full charge capacity as a percentage.
  • the SOC is obtained from the integrated value of the charging / discharging current flowing through the battery pack 500, and the calculation formula or table showing the relationship between the open circuit voltage (Open Circuit Voltage (OCV)) of the battery pack 500 and the SOC is determined. Can be obtained.
  • OCV Open Circuit Voltage
  • the pack information control unit 503 transmits the detection data acquired from the battery state detection unit 502 to the BMU 51 in response to a battery data request from the BMU 51.
  • the pack information control unit 503 is configured as a communication microcomputer. Since the communication between the pack information control unit 503 and the BMU 51 (specifically, the control unit 510 of the BMU 51) uses optical communication, the battery pack 500 includes the optical module 504 as described above.
  • the optical module 504 includes an optical transmission module Tx-1 and an optical reception module Rx for downstream communication, and an optical transmission module Tx-2 for upstream communication.
  • optical communication is used as a communication means between the BMU 51 and each battery pack 500 so that a high-voltage system compliant with global safety standards can be constructed. For this reason, the pack information control unit 503 cannot obtain drive power from the BMU 51. Therefore, the pack information control unit 503 is supplied with power from the own pack (the battery pack in which the pack information control unit 503 is provided).
  • the pack information control unit 503 is provided so as to be activated when requested by the control unit 510 of the BMU 51.
  • the determination switch circuit 505 is provided in the battery pack 500.
  • FIG. This determination switch circuit 505 is the first embodiment of the determination switching unit of the present invention.
  • FIG. 4 is a diagram for explaining the communication system CS including the determination switch circuit 505 provided in the storage battery unit 5 of the first embodiment.
  • FIG. 4 shows only the configuration of downstream communication in which a command is transmitted from the BMU 51 side to the battery pack 500.
  • the optical receiving module Rx provided in the battery pack 500 is supplied with driving power from its own pack. A predetermined voltage is applied to the optical receiving module Rx via the regulator reg1. The optical receiver module Rx can always be supplied with electric power.
  • the optical receiving module Rx is connected to the OR circuit OR so that a signal can be input.
  • the optical receiving module Rx is connected to the pack information control unit 503 so that a signal can be input.
  • the pack information control unit 503 is supplied with power from its own pack via the switch SW and the regulator reg2.
  • the switch SW When the switch SW is in a connected state, a predetermined voltage is applied to the pack information control unit 503 via the regulator reg2, and the pack information control unit 503 becomes operable.
  • the switch SW When the switch SW is in an open state, no voltage is applied to the pack information control unit 503, and the pack information control unit 503 enters a sleep state.
  • the pack information control unit 503 is connected to the OR circuit OR so that a signal can be input.
  • the OR circuit OR is configured such that its output is transmitted to the switch SW.
  • the control unit 510 of the BMU 51 (embodiment of the first control unit of the present invention) transmits a battery data request command via the optical transmission module Tx included in the BMU 51.
  • the battery data request command is broadcast to each battery pack 500.
  • the light receiving module Rx of the battery pack 500 receives an optical signal directly from the BMU 51 or via another battery pack 500.
  • the pack information control unit 503 (embodiment of the second control unit of the present invention) is activated upon receiving power supply from its own pack and enters a communicable state. That is, when the optical reception module Rx (optical reception unit) receives an optical signal, the determination switch circuit 505 determines that there is a request and causes the pack information control unit 503 to transition from the sleep state to the communicable state. .
  • the pack information control unit 503 When the pack information control unit 503 enters the communicable state, the pack information control unit 503 transmits a signal to the OR circuit OR and maintains the communicable state through the determination switch circuit processing system (1). In other words, the communication state of the pack information control unit 503 is maintained even after no signal is input via the optical reception module Rx. Further, when the pack information control unit 503 becomes in a communicable state, the pack information control unit 503 acquires a command from the BMU 51 through the Rx signal processing system (2). The pack information control unit 503 performs, for example, a process of transmitting detection data acquired from the battery state detection unit 502 to the BMU 51 (upstream communication) as battery data.
  • the pack information control unit 503 in the communicable state for example, performs an OR operation when it is determined that a sleep command (or shutdown command) transmitted from the BMU 51 side has been received or when it is determined that it needs to sleep itself.
  • the transmission of the signal to the circuit OR is stopped.
  • the switch SW is opened through the determination switch circuit processing system (1), and the pack information control unit 503 cannot obtain power supply from within its own pack, and transitions to the sleep state.
  • the pack information control unit 503 in the communicable state transitions itself from the communicable state to the sleep state according to its own determination.
  • the pack information control unit 503 determines that it needs to sleep by itself, for example, after normal processing is completed, when an abnormality such as a soft error is detected by the watchdog timer, or when a communication error is detected. For example, when a communication timeout is detected.
  • the sleep state of the pack information control unit 503 (communication microcomputer) in the battery pack 500 is maintained until the battery pack 500 receives an optical signal.
  • the pack information control unit 503 can be changed from the sleep state to the communicable state. For this reason, standby power can be reduced by the pack information control unit 503, and power consumption can be suppressed. Therefore, it is possible to suppress the consumption of the capacity of the battery pack 500 before installation and operation of the storage battery system BS.
  • FIG. 5 is a diagram showing a configuration of the storage battery unit 5 of the second embodiment.
  • the assembled battery 50 has a configuration in which a plurality (N) of battery packs 500 are connected in series.
  • the optical communication unit configured by the optical fiber F, the optical transmission module Tx, and the optical reception module Rx is different from the configuration of the first embodiment.
  • the storage battery unit 5 of the second embodiment has a configuration in which the BMU 51 and each battery pack 500 are only connected in a so-called daisy chain. That is, in the storage battery unit 5 of the second embodiment, the optical fiber F and the optical modules Tx and Rx provided for uplink communication in the first embodiment are erased. In the configuration of the second embodiment, both downlink communication and uplink communication are performed using a single communication path.
  • an address is assigned to each battery pack 500 so that the battery data from which the BMU 51 is the battery data can be identified in upstream communication. Yes.
  • the battery data request command transmitted from the BMU 51 is transmitted by designating an ID for each battery pack.
  • This address allocation may be set in advance or may be obtained by performing an address allocation process at the start of communication.
  • FIG. 6 is a diagram for explaining the communication system CS including the determination switch circuit 506 provided in the storage battery unit 5 of the second embodiment. In FIG. 6, only the configuration of downlink communication in which a command is transmitted from the BMU 51 side to the battery pack 500 is illustrated.
  • the determination switch circuit 506 is a second embodiment of the determination switching unit of the present invention.
  • the determination switch circuit 506 in the storage battery unit 5 of the second embodiment has a different configuration from the determination switch circuit 505 of the first embodiment.
  • the determination switch circuit 506 is an integrated circuit realized by, for example, CPLD (Complex Programmable Logic Device) or ASIC (Application Specific Integrated Circuit).
  • the determination switch circuit 506 is supplied with power from the battery pack 500 in which the determination switch circuit 506 is provided.
  • the determination switch circuit 506 is given a predetermined voltage via the regulator reg3.
  • the determination switch circuit 506 is provided so that the ID pattern of the battery pack 500 on which it is provided can be set. In addition, the determination switch circuit 506 is provided so that a signal serially input from the light receiving module Tx of the battery pack 500 can be converted into a parallel signal and compared with a preset ID pattern.
  • the ID pattern set is obtained by a process of turning on the ID pattern flag in the determination switch circuit 506 and inputting an ID from the outside. This set is performed before the start of communication, for example.
  • the determination switch circuit 506 is connected to the pack information control unit 503 so as to exchange information.
  • the determination switch circuit 506 is configured to be able to transmit a signal to a switch SW that turns on and off the pack information control unit 503.
  • the control unit 510 of the BMU 51 transmits a battery data request command via the optical transmission module Tx included in the BMU 51.
  • the battery data request command is transmitted by specifying an ID for each battery pack.
  • the light receiving module Rx of the battery pack 500 receives an optical signal directly from the BMU 51 or via another battery pack 500.
  • the light receiving module Rx provided in the battery pack 500 transmits a signal to the determination switch circuit 506 when receiving the light signal.
  • the determination switch circuit 506 that has received the signal performs parallel conversion on the serially input signal pattern and compares it with a preset ID pattern (the ID pattern of its own pack). When the input pattern matches the preset pattern, the determination switch circuit 506 outputs an activation signal to the switch SW.
  • the switch SW that has received the activation signal is in a connected state, whereby the pack information control unit 503 is activated upon receiving power supply from its own pack and becomes in a communicable state.
  • the determination switch circuit 506 continues to output a start signal to the switch SW unless a stop signal is input from the pack information control unit 503. For this reason, the communicable state of the pack information control unit 503 is maintained until the pack information control unit 503 determines that it is necessary to shift to the sleep state.
  • the pack information control unit 503 that has entered the communicable state acquires a command from the BMU 51 via the determination switch circuit 506.
  • the pack information control unit 503 performs, for example, a process of transmitting detection data acquired from the battery state detection unit 502 to the BMU 51 (upstream communication) as battery data.
  • the pack information control unit 503 determines that it is necessary to transition to the sleep state, for example, when a sleep command (or a shutdown command) is transmitted from the BMU 51 side, it is determined that it is necessary to sleep by itself. Is the case.
  • the pack information control unit 503 transmits a stop signal to the determination switch circuit 506, the output of the activation signal from the determination switch circuit 506 is stopped and the switch SW is opened. As a result, the pack information control unit 503 cannot obtain power from its own pack, and transitions to the sleep state.
  • the pack information control unit 503 determines that it needs to sleep by itself, for example, after normal processing is completed, when an abnormality such as a soft error is detected by the watchdog timer, or when a communication error is detected. For example, when a communication timeout is detected.
  • the pack information control unit 503 is activated only when a request for the own pack is made. That is, the determination switch circuit 506 is a request for performing a predetermined determination process on the input signal input from the optical reception module Rx and causing the pack information control unit 503 of the own pack to transition from the sleep state to the communicable state. Is determined, the pack information control unit 503 is shifted from the sleep state to the communicable state.
  • the determination switch circuit 506 can be realized by CPLD or ASIC.
  • the power consumption can be considerably smaller than the power consumption of the pack information control unit 503 (for example, about 1/10).
  • the pack information control part 503 communication microcomputer
  • the pack information control part 503 with which the battery pack 500 is equipped is maintained with a sleep state until the request signal with respect to an own pack is received. For this reason, power consumption by the pack information control unit 503 is suppressed. Therefore, according to the storage battery unit 5 of the second embodiment, it is possible to suppress the consumption of the capacity of the battery pack 500 before installation and operation of the storage battery system BS.
  • Embodiment shown above is an illustration of this invention and the structure of the communication system of this invention, a storage battery unit, and a storage battery system is not limited to the structure shown above.
  • the determination switch circuit included in the storage battery unit of the second embodiment may be applied to the storage battery unit of the first embodiment.
  • a command transmitted from the BMU 51 is not broadcasted, but is transmitted by designating an ID for each battery pack.
  • the determination switch circuit included in the storage battery unit of the first embodiment may be applied to the storage battery unit of the second embodiment.
  • the configuration of the communication unit included in the storage battery unit is not limited to the embodiment described above.
  • a configuration as shown in FIG. 7 may be used.
  • the BMU 51 and each battery pack 500 are connected one-to-one with the optical fiber F for each of the downlink communication and the uplink communication.
  • the black circle indicates the optical transmission module Tx
  • the white circle indicates the optical reception module Rx.
  • the BSU 52 is provided in the storage battery unit 5.
  • the configuration is not limited to this, and the BSU 52 may be included in the power converter 4, for example.
  • the storage battery system of the present invention may be a stationary system or a system applied to a mobile object.
  • the communication system which uses the optical communication and makes the second control unit communicable from the sleep state only when there is a request from the first control unit is limited to the storage battery unit or the storage battery system. Alternatively, it may be applied to other devices and systems.
  • Power Conversion Unit 5 Storage Battery Unit 51 BMU (Management Unit) 500 Battery pack 503 Pack information control unit (second control unit) 505, 506 judgment switch circuit (judgment switching unit) 510 BMU control unit (first control unit) BS battery system CS communication system F Optical fiber (part of optical communication unit) Rx optical receiver module (part of optical communication unit, optical receiver) Tx optical transmission module (part of optical communication unit)

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  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
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  • Electrochemistry (AREA)
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  • Physics & Mathematics (AREA)
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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un système de télécommunication (CS) qui comporte une première unité de commande (510), une deuxième unité de commande (503), une unité de télécommunication optique permettant une télécommunication optique entre la première unité de commande (510) et la deuxième unité de commande (503), et une unité (505) de détermination de commutation qui, sur la base d'un signal d'entrée introduit par l'intermédiaire de l'unité de télécommunication optique sur une commande de la première unité de commande (510), permet à la deuxième unité de commande (503) de transiter d'un état de veille à un état activé de télécommunication. La deuxième unité de commande (503), qui est configurée pour ne démarrer qu'en présence d'une demande provenant de la première unité de commande (510), permet de réduire la puissance absorbée au repos.
PCT/JP2011/079314 2011-03-14 2011-12-19 Système de télécommunication, unité d'accumulateur et système de batterie d'accumulateurs WO2012124231A1 (fr)

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JP2011-055707 2011-03-14

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009527951A (ja) * 2006-02-17 2009-07-30 スタンダード マイクロシステムズ コーポレーション 電力消費を低下させ、製造コストを低下させ、送信効率を増大させるために、二つの給電ピンと一つのステータスピンとを用いた光受信器を有する送信ネットワーク
JP2009302752A (ja) * 2008-06-11 2009-12-24 Mitsubishi Electric Corp 加入者終端装置および電源制御方法
JP2010135261A (ja) * 2008-12-08 2010-06-17 Ihi Marine United Inc 蓄電池パッケージ
JP2011125118A (ja) * 2009-12-09 2011-06-23 Toshiba Corp 組電池システム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009527951A (ja) * 2006-02-17 2009-07-30 スタンダード マイクロシステムズ コーポレーション 電力消費を低下させ、製造コストを低下させ、送信効率を増大させるために、二つの給電ピンと一つのステータスピンとを用いた光受信器を有する送信ネットワーク
JP2009302752A (ja) * 2008-06-11 2009-12-24 Mitsubishi Electric Corp 加入者終端装置および電源制御方法
JP2010135261A (ja) * 2008-12-08 2010-06-17 Ihi Marine United Inc 蓄電池パッケージ
JP2011125118A (ja) * 2009-12-09 2011-06-23 Toshiba Corp 組電池システム

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