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WO2015040655A1 - Dispositif de commutation et système d'accumulateur - Google Patents

Dispositif de commutation et système d'accumulateur Download PDF

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Publication number
WO2015040655A1
WO2015040655A1 PCT/JP2013/005571 JP2013005571W WO2015040655A1 WO 2015040655 A1 WO2015040655 A1 WO 2015040655A1 JP 2013005571 W JP2013005571 W JP 2013005571W WO 2015040655 A1 WO2015040655 A1 WO 2015040655A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage battery
current path
electromagnetic contactor
signal
contactor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/005571
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English (en)
Japanese (ja)
Inventor
久保　守
岡本　一晃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to PCT/JP2013/005571 priority Critical patent/WO2015040655A1/fr
Publication of WO2015040655A1 publication Critical patent/WO2015040655A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • H02J7/60—
    • H02J7/663—
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • H01M2200/10—Temperature sensitive devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • 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 switching device and a storage battery system for opening and closing a current path connected to a storage battery.
  • a technology has been developed in which a storage battery and a system power supply are connected in parallel to a load, and the storage battery is used as a backup of power consumed by the load in case of a power failure of the system power supply.
  • Some of such technologies include a storage battery system including a large number of storage batteries as a backup power source for a system that requires a large capacity and a large output.
  • a large number of storage batteries are installed and operated.At this time, a plurality of storage batteries are connected in parallel to form one battery group, and further by connecting the battery groups in series, Large capacity and high output may be realized.
  • a breaker is used to shut off the output of a storage battery in a power storage system.
  • the interruption of the large-capacity and high-output power as described above may be a case where there is no circuit breaker certified by a third party or a high cost.
  • the present invention has been made in view of such a situation, and an object thereof is to provide an alternative technique for a breaker for cutting off electric power.
  • a switching device is arranged on a current path that can be connected to a storage battery, electrically connected to or disconnected from the current path, and operation of the electromagnetic contactor And a control unit for controlling.
  • the control unit When the control unit outputs (1) a disconnection signal for instructing to disconnect the current path when the magnetic contactor is connected to the current path, the control unit outputs the disconnection signal while being activated.
  • the magnetic contactor cuts off the current path, the magnetic contactor is restarted before outputting a connection signal for instructing connection of the current path.
  • a storage battery system includes a storage battery, a current path connectable to the storage battery, and an electromagnetic contactor that is disposed on the current path and electrically connects or disconnects the current path. And a control unit for controlling the operation of the electromagnetic contactor.
  • the control unit (1) when the electromagnetic contactor is connected to the current path, when the disconnection signal for instructing to disconnect the current path is output to the electromagnetic contactor, the control unit is disconnected while being activated. (2) when the electromagnetic contactor is cutting the current path, restart the connection before outputting a connection signal to the magnetic contactor to instruct the connection of the current path. .
  • FIG. 1 is a diagram schematically showing a power distribution system according to an embodiment. It is a figure which shows typically an example of the external appearance of the storage battery system which concerns on embodiment. It is a perspective view which shows the external appearance of the storage battery storage shelf which concerns on embodiment. It is a figure which shows the storage battery accommodation shelf of the state which accommodated the storage battery. It is a figure which shows typically the circuit structure of the switch module which concerns on embodiment. It is a figure which shows typically the circuit structure of the switch module which concerns on the modification of embodiment.
  • FIG. 1 is a diagram schematically showing a power distribution system 100 according to an embodiment of the present invention.
  • the power distribution system 100 includes a storage battery container 200 including a plurality of storage batteries, a solar battery 300 that is a power generator for renewable energy, a bidirectional power conditioner 400, a system power supply 500, and a load 600.
  • System power supply 500 is an AC power supply for supplying power from an electric power company.
  • the solar cell 300 is a power generation device that directly converts light energy into electric power using the photovoltaic effect.
  • As the solar cell 300 a silicon solar cell, a solar cell made of various compound semiconductors, a dye-sensitized type (organic solar cell), or the like is used.
  • the power distribution system 100 may include a fuel cell, wind power generation, and micro hydropower generation (not shown) instead of or in addition to the solar cell 300. Since the power generated by wind power generation or micro hydropower generation is generally AC power generation, when the power distribution system 100 includes wind power generation, an AC / DC converter (not shown) is installed before output to the bidirectional power conditioner 400. To do.
  • the storage battery container 200 includes a plurality of storage battery units 210 including a predetermined number of storage batteries. In the example shown in FIG. 1, there are four storage battery units up to the first storage battery unit 210a, the second storage battery unit 210b, the third storage battery unit 210c, and the fourth storage battery unit 210d. 210 ").
  • Each storage battery unit 210 includes a first storage battery management unit 260a, a second storage battery management unit 260b, a third storage battery management unit 260c, and a fourth storage battery management unit 260d (hereinafter, unless otherwise specifically distinguished, for managing storage batteries, respectively). (Collectively referred to as “storage battery management unit 260”).
  • the storage battery container 200 also includes a master storage battery management unit 220 for controlling each storage battery management unit 260 in an integrated manner.
  • the storage battery container 200 further includes a first switch module 250a, a second switch module 250b, a third switch module 250c, and a fourth switch that can cut off current paths between the storage battery units 210 and the bidirectional power conditioner 400, respectively.
  • a module 250d is provided. Hereinafter, these are collectively referred to as “switch module 250” unless otherwise specified.
  • the storage battery management unit 260 manages the storage battery unit 210.
  • One storage battery system is configured with one storage battery unit 210, switch module 250, and storage battery management unit 260 as a unit. Details of the storage battery system will be described later.
  • Bidirectional power conditioner 400 is connected to storage battery container 200 and solar battery 300 at one end and to system power supply 500 at the other end.
  • the bi-directional power conditioner 400 includes a bi-directional inverter 410, and converts DC power generated by the solar battery 300 or discharged from the storage battery container 200 into AC power under the control of the control unit 420, AC power from the system power supply 500 is converted into DC power.
  • the first DC / DC converter 430a is installed in a conductive path between the switch module 250a and the bidirectional power conditioner 400.
  • the second DC / DC converter 430b is installed in a conductive path between the second switch module 250b and the bidirectional power conditioner 400.
  • the third DC / DC converter 430c and the fourth DC / DC converter 430d are installed between the third switch module 250c and the bidirectional power conditioner 400, and between the fourth switch module 250d and the bidirectional power conditioner 400, respectively. Is done.
  • these DC / DC converters are collectively referred to as “DC / DC converters 430” unless otherwise specified.
  • the DC / DC converter 430 boosts or steps down the DC power converted by the bidirectional power conditioner, and charges / discharges the plurality of storage batteries.
  • the bidirectional power conditioner 400 is also provided with a solar cell DC / DC converter 440, converts the electric power generated by the solar cell 300, and outputs it to the bidirectional inverter 410.
  • the bidirectional power conditioner 400 the electric power of each storage battery unit 210 and the electric power generated by the solar battery 300 can be supplied to the load 600 in cooperation with the system power supply 500. Further, when the system power supply 500 fails, the power of each storage battery unit 210 and the power generated by the solar battery 300 can be supplied to the load 600 as a backup of the system power supply 500.
  • FIG. 2 is a diagram schematically showing an example of the appearance of the storage battery system 240 according to the embodiment.
  • the storage battery system 240 includes a storage battery unit 210, a switch module 250, and a storage battery management unit 260.
  • Storage battery unit 210 includes 70 storage battery packs 212.
  • Each storage battery pack 212 is a rechargeable secondary battery.
  • the storage battery pack 212 is realized by, for example, a lithium ion secondary battery.
  • the storage battery pack 212 is charged by the electric power of the system power source 500 converted into DC power by the bidirectional power conditioner 400.
  • the storage battery management unit 260 measures various physical quantities of the storage battery pack 212, such as the state of charge (State Of Charge; SOC), temperature, voltage, current, etc. of each storage battery pack 212, and the specified physical quantity is the bidirectional power conditioner 400. To provide.
  • the storage battery management unit 260 also performs control such as cooling the storage battery pack 212 by controlling a fan for cooling the storage battery pack 212.
  • a rectangle indicated by reference numeral 212 is one storage battery pack 212.
  • the storage battery pack 212 in the embodiment has a configuration in which cylindrical batteries are connected in 13 series and 24 parallel configurations. In order to avoid complication, not all symbols are attached, but all the rectangles similar to the rectangles denoted by the symbol 212 indicate the storage battery pack 212.
  • FIG. 3 is a perspective view showing an appearance of the storage battery storage shelf 214 according to the embodiment, and illustrates the storage battery storage shelf 214 in an empty state in which the storage battery pack 212 or the storage battery management unit 260 is not stored.
  • the storage battery storage shelf 214 includes a first partition 216a, a second partition 216b, and a third partition for partitioning the storage space between one storage space and another storage space. 216c.
  • FIG. 4 is a diagram showing the storage battery storage shelf 214 in a state in which the storage battery pack 212 is stored. As shown in FIG. 4, the length of the storage space in the Y direction is set so that the storage battery pack 212 just fits in the storage space.
  • the storage battery unit 210 has a power amount of 126 kWh and a large output. For this reason, it is assumed that it is difficult to obtain a breaker suitable for the output of the storage battery unit 210 or that the cost is increased.
  • a breaker Circuit breaker
  • the switch module 250 according to the embodiment replaces the function of the breaker by controlling the magnetic contactor.
  • the switch module 250 according to the embodiment will be described.
  • FIG. 5 is a diagram schematically showing a circuit configuration of the switch module 250 according to the embodiment.
  • the switch module 250 includes a current path including a first current path 257a connected to the positive terminal of the storage battery unit 210 and a second current path 257b connected to the negative terminal (hereinafter, the first current path 257a and the second current path 257b).
  • current path 257 is collectively referred to as “current path 257” unless otherwise specifically distinguished.
  • FIG. 5 the connection relationship of the electrical components in the switch module 250 will be described.
  • the first electromagnetic contactor 251 that electrically connects or disconnects the first current path 257a is connected to the first current path 257a.
  • a second electromagnetic contactor 252 that electrically connects or disconnects the first current path 257a is connected to the second current path 257b.
  • the second current path 257b is grounded.
  • an electromagnetic contactor is an electrical component that opens and closes a current path using the operation of an electromagnet. More specifically, in an electromagnetic contactor, in a normal state, the contact is connected to the current path by an urging force such as a spring, but when electric power is supplied to the electromagnet, the contact is electromagnetized by a magnetic force larger than the urging force. The current path is cut off. Since an electromagnetic contactor can open and close a current path with or without energization of an electromagnet, it is used for, for example, opening and closing of an electric circuit or automatic opening and closing of a remote operation.
  • a third electromagnetic contactor 253 connected in series with the first electromagnetic contactor 251 is further connected on the first current path 257a.
  • a fourth electromagnetic contactor 254 connected in series with the second electromagnetic contactor 252 is further connected on the second current path 257b.
  • the first node N1 exists between the first electromagnetic contactor 251 and the third electromagnetic contactor 253. Further, on the second current path 257b, a second node N2 exists between the second electromagnetic contactor 252 and the fourth electromagnetic contactor 254. A voltage sensor 255 is connected on a path connecting the first node N1 and the second node N2.
  • a third node N3 exists between the third electromagnetic contactor 253 and the positive terminal of the storage battery unit 210.
  • a fourth node N4 exists between the fourth electromagnetic contactor 254 and the negative terminal of the storage battery unit 210 on the second current path 257b.
  • a current-voltage sensor that measures a current flowing through the second current path 257b and measures a voltage between the third node N3 and the fourth node N4 between the fourth node N4 and the negative terminal of the storage battery unit 210. 256 is connected.
  • the first fuse 258a is connected between the first electromagnetic contactor 251 and the bidirectional power conditioner 400 on the first current path 257a.
  • a second fuse 258b is connected between the current / voltage sensor 256 and the negative terminal of the storage battery unit 210 on the second current path 257b.
  • the switch module 250 can open and close a current path between the storage battery unit 210 and the bidirectional power conditioner 400 by opening and closing each electromagnetic contactor.
  • the opening / closing of each electromagnetic contactor in the switch module 250 is basically controlled by the control unit 270 of the storage battery management unit 260. Therefore, the switch module 250 and the storage battery management unit 260 constitute a switching device that controls connection of the storage battery unit 210.
  • control part which controls opening and closing of each electromagnetic contactor in the switch module 250 is not restricted to the case in the storage battery management part 260.
  • it may be in the switch module 250 or in the master storage battery management unit 220.
  • the switch module 250 alone constitutes a switching device that controls connection of the storage battery unit 210.
  • the switch module 250 and the master storage battery management unit 220 constitute a switching device.
  • the control part which controls opening and closing of an electromagnetic contactor may be in the bidirectional
  • connection signal a signal for instructing to connect the current path 257 when the electromagnetic contactor cuts the current path 257. Restart before output to contactor.
  • the control unit 270 is configured not to output a connection signal to the electromagnetic contactor unless it has been restarted.
  • the output of the connection signal is specifically a signal for supplying electric power to the electromagnet in the electromagnetic contactor.
  • the control unit 270 is realized by using an arithmetic unit such as a microcomputer, for example, and requires an explicit instruction from the user for restarting. Therefore, an explicit instruction from the user is required for the control unit 270 to output a connection signal to the electromagnetic contactor. This corresponds to the fact that the breaker once tripped must be manually restored by the user.
  • control unit 270 provides a signal for instructing to disconnect the current path 257 when the first electromagnetic contactor 251 and the second electromagnetic contactor 252 are connected to the current path 257 (hereinafter referred to as “disconnection signal”). ”)" Is output to each electromagnetic contactor, a disconnection signal is output without being restarted. This corresponds to the breaker tripping automatically.
  • control unit 270 it is technically possible for the control unit 270 to output a connection signal without restarting.
  • the switch module 250 according to the embodiment must be after restarting in order to configure a breaker alternative means by combining the controller 270 with the first electromagnetic contactor 251 and the second electromagnetic contactor 252.
  • the control unit 270 is configured not to output a connection signal.
  • the user can also restart the control unit 270 by remote operation. Therefore, in another embodiment, unlike the case of the breaker, the interrupted current path can be restored without actually going to the place where the control unit 270 is installed.
  • Control unit 270 outputs a disconnection signal when detecting a signal suggesting abnormality of storage battery unit 210.
  • the “signal indicating abnormality” is an emergency stop signal from each storage battery pack 212 constituting the storage battery unit 210. For example, a signal indicating overdischarge of the storage battery pack 212, an overcharge of the storage battery pack 212 is performed. These signals are a signal indicating the temperature of the storage battery pack 212, a signal indicating that the storage battery pack 212 is overvoltage, and a signal indicating that the current flowing through the current path 257 is an overcurrent.
  • the “signal indicating abnormality” includes a signal transmitted when the emergency stop switch 280 provided in the storage battery management unit 260 is turned off, a stop signal from the master storage battery management unit 220, and the like. is there.
  • the control unit (not shown) of each storage battery pack 212 determines whether each storage battery pack 212 is overdischarged and whether each storage battery pack 212 is overcharged. It is calculated from the voltage and current of the storage battery obtained from the above. More specifically, the control unit of each storage battery pack 212 suggests overcharge when the calculated storage amount of each storage battery pack 212 is equal to or greater than an overcharge threshold determined to determine whether or not it is overcharge. Is determined to be an abnormal signal. In addition, the control unit of each storage battery pack 212 performs overdischarge when the amount of power stored in each storage battery pack 212 obtained from the SOC calculation unit is equal to or less than an overdischarge threshold determined to determine whether or not it is overdischarge. It is determined as an abnormal signal to suggest.
  • the overcharge threshold and the overdischarge threshold may be determined in consideration of the characteristics of each storage battery pack 212 and the like, for example, 98% and 20%, respectively.
  • the control unit of each storage battery pack 212 acquires a signal related to the temperature of each storage battery pack 212 from a temperature sensor (not shown) in each storage battery pack 212. More specifically, the control unit of each storage battery pack 212 determines that the signal acquired from the temperature sensor is a signal indicating a high temperature abnormality when the temperature acquired from the temperature sensor is equal to or higher than a high temperature threshold temperature determined to determine whether the temperature is abnormal. When the temperature is equal to or lower than a low temperature threshold temperature determined to determine whether or not there is a low temperature abnormality, the signal is determined to indicate a low temperature abnormality.
  • the control unit of each storage battery pack 212 sends a signal indicating that each storage battery pack 212 is overvoltage and a signal indicating that the current flowing through the current path 257 is overcurrent in each storage battery pack 212. Obtained from the current voltage sensor. More specifically, the control unit of each storage battery pack 212 indicates a signal indicating an overvoltage abnormality when the voltage value acquired from the current voltage sensor is equal to or higher than an overvoltage threshold determined to determine whether or not the voltage value is an overvoltage. Is determined. Similarly, the control unit of each storage battery pack 212 similarly indicates a signal indicating an overcurrent abnormality when the current value acquired from the current-voltage sensor is equal to or greater than an overcurrent threshold determined to determine whether or not the current value is an overcurrent. Is determined.
  • the master storage battery management unit 220 communicates with the bidirectional power conditioner 400 and controls the operation of each storage battery management unit 260 based on a control signal acquired from the bidirectional power conditioner 400. For this reason, if the master storage battery management unit 220 becomes unable to communicate with the bidirectional power conditioner 400 due to malfunction of the bidirectional power conditioner 400 or an abnormality in the communication path with the bidirectional power conditioner 400, A disconnection signal is output to the first electromagnetic contactor 251 and the second electromagnetic contactor 252 via the OR circuit 264. Thereby, between the storage battery unit 210 and the bidirectional
  • a disconnect signal is directly output to the first electromagnetic contactor 251 and the second electromagnetic contactor 252 via the OR circuit 264, and the storage battery unit 210 and the bidirectional power conditioner 400 are connected.
  • the gap is electrically disconnected.
  • the control unit 270 performs opening / closing control of the first electromagnetic contactor 251 and the second electromagnetic contactor 252 when detecting a signal suggesting an abnormality of the storage battery unit 210.
  • the first electromagnetic contactor 251 and the second electromagnetic contactor 252 are an emergency stop switch OFF signal, a stop signal from the master storage battery management unit 220, and an emergency from each storage battery pack 212 constituting the storage battery unit 210. It is shut off by the stop signal.
  • the stop signal in the master storage battery management part 220 is transmitted by receiving the signal which notifies the action
  • the control unit 270 performs the third electromagnetic contactor 253 or the fourth The open / close control of the magnetic contactor 254 is executed, and switching between cutoff and energization is performed for charge / discharge control of the storage battery unit 210. In the normal control, the control unit 270 does not require restarting for reconnection of the third electromagnetic contactor 253 and the fourth electromagnetic contactor 254.
  • the first electromagnetic contactor 251 and the third electromagnetic contactor 253 are connected to the first current path 257a, and both are used to electrically cut off the first current path 257a. Therefore, when one of the first electromagnetic contactor 251 and the third electromagnetic contactor 253 cannot cut off the first current path 257a due to, for example, contact welding or the like, the control unit 270 A cutting signal is output to the magnetic contactor.
  • the control unit 270 outputs a cutting signal to the first electromagnetic contactor 251. If the first electromagnetic contactor 251 operates normally and the first current path 257a can be electrically cut off, the first electromagnetic contactor 251 notifies the control unit 270 of a signal indicating a cut-off state. However, when the first electromagnetic contactor 251 maintains the energized state for contact welding or the like, the first electromagnetic contactor 251 notifies the control unit 270 of a signal indicating a state in which it is not interrupted.
  • the control unit 270 determines the operating state of the first electromagnetic contactor 251 based on the signal from the first electromagnetic contactor 251 before and after the output of the disconnection signal to the first electromagnetic contactor 251.
  • the control unit 270 passes through the OR circuit 264.
  • a cutting signal is output to the third electromagnetic contactor 253. Thereby, even if the first electromagnetic contactor 251 malfunctions, the first current path 257a can be electrically cut off.
  • the second electromagnetic contactor 252 and the fourth electromagnetic contactor 254 are connected to the second current path 257b, and both are used to electrically cut off the second current path 257b. Therefore, as in the case of the first electromagnetic contactor 251 and the third electromagnetic contactor 253 in the first current path 257a, when either the second electromagnetic contactor 252 or the fourth electromagnetic contactor 254 is contact-welded, A disconnect signal is output to one of them.
  • the control unit 270 in the case of detecting a signal due to turning off the emergency stop switch, a stop signal from the master storage battery management unit 220, and a signal suggesting an abnormality of the storage battery unit 210, the first electromagnetic contactor 251 and the first 2 Basically, the switching control of the electromagnetic contactor 252 is basically performed. However, when a malfunction occurs in these electromagnetic contactors, the current path is controlled by controlling the opening and closing of the third electromagnetic contactor 253 and the fourth electromagnetic contactor 254. The reliability of electrical disconnection of 257 can be increased.
  • the control unit 270 detects the first electromagnetic contactor 251 and the second electromagnetic contact when detecting a signal due to turning off the emergency stop switch, a stop signal from the master storage battery management unit 220, and a signal indicating an abnormality of the storage battery unit 210.
  • a disconnection signal is output to the device 252
  • the disconnection signal is first output to one of the first electromagnetic contactor 251 and the second electromagnetic contactor 252, and then the other electromagnetic contact A disconnect signal may be output to the device.
  • the control unit 270 outputs the disconnection signal to the second electromagnetic contactor 252 after outputting the disconnection signal to the first electromagnetic contactor 251.
  • a first electromagnetic contactor 251 provided in the first current path 257a and a second electromagnetic contactor 252 provided in the second current path 257b are respectively disposed.
  • the first electromagnetic contactor 251 and the second electromagnetic contactor 252 are arranged, and by blocking both, safety is ensured in both the first current path 257a and the second current path 257b. can do.
  • each of the first electromagnetic contactor 251, the second electromagnetic contactor 252, the third electromagnetic contactor 253, and the fourth electromagnetic contactor 254 is not a single electromagnetic contactor, but two electromagnetic contactors having different polarities. You may connect and comprise in parallel. Thereby, the interruption
  • the switching device including the switch module 250 and the control unit 270 according to the embodiment, it is possible to provide a breaker alternative technique for cutting off power.
  • the breaker is intended to cut off the excessive current, but the switching device according to the embodiment suggests various abnormalities other than the excessive current by substituting the function of the breaker with a combination of a magnetic contactor and a control unit.
  • the current path can be interrupted by the signal. Further, unlike the case where the breaker trips, the user can return the current path by remote control. Moreover, it contributes to space saving and cost reduction compared with the case where a breaker is used.
  • the control unit 270 receives a signal indicating a communication abnormality from the master storage battery management unit 220 and disconnects the first electromagnetic contactor 251 and the second electromagnetic contactor 252. A signal may be transmitted.
  • the opening / closing control of each electromagnetic contactor can be unified with the control unit 270, which is advantageous in that the opening / closing control is simplified.
  • the control unit 270 sends a disconnection signal to the third electromagnetic contactor 253 and the fourth electromagnetic contactor 254 when a signal indicating a communication abnormality is received. You may make it output.
  • a disconnection signal is transmitted to the first electromagnetic contactor 251 and the second electromagnetic contactor 252. Since the order of the switching control of each electromagnetic contactor is unified, there is an effect in that the switching control is simplified.
  • the contactor in the normal state, the contactor is connected to the current path by an urging force such as a spring in the normal state.
  • the case where the current path is disconnected has been described.
  • the electromagnetic contactor is not limited to this case.
  • the contactor In a normal state, the contactor is separated from the current path by the biasing force of a spring or the like.
  • electromagnetic contactors that are attracted and connected to the current path. Even if such an electromagnetic contactor is used, the present invention is established.
  • the third electromagnetic contactor 253 connected in series with the first electromagnetic contactor 251 is connected on the first current path 257a, and connected in series with the second electromagnetic contactor 252 on the second current path 257b.
  • the case where the 4th electromagnetic contactor 254 to be connected was demonstrated.
  • both the first current path 257a and the second current path 257b include two series electromagnetic contactors. It is only necessary to provide two in-line magnetic contactors on at least one of the current paths 257.
  • the control unit 270 controls the third electromagnetic contactor 253 or the normal electromagnetic signal when the emergency stop switch is turned off, the stop signal from the master storage battery management unit 220, and the signal suggesting an abnormality of the storage battery unit 210. Opening / closing control of the fourth electromagnetic contactor 254 is executed, and the charge / discharge control of the storage battery unit 210 is switched between cutoff and energization. As described above, if the purpose of the charge / discharge control of the storage battery unit 210 is to be used, the current path 257 may only be disconnected in at least one of the third electromagnetic contactor 253 and the fourth electromagnetic contactor 254.
  • FIG. 6 is a diagram schematically illustrating a circuit configuration of a switch module 250 according to a third modification of the embodiment.
  • the example shown in FIG. 6 differs from the example shown in FIG. 5 in that the fourth electromagnetic contactor 254 is not connected on the second current path 257b, but the other configurations are the same.
  • a third electromagnetic contactor 253 is connected in series to the first electromagnetic contactor 251 on the first current path 257a.
  • no electromagnetic contactor is connected in series to the second electromagnetic contactor 252 on the second current path 257b.
  • the control unit 270 includes a third electromagnetic contactor in a normal state in which a signal due to turning off the emergency stop switch, a stop signal from the master storage battery management unit 220, and a signal suggesting an abnormality of the storage battery unit 210 are not detected.
  • the charging / discharging of the storage battery unit 210 is controlled by controlling the opening and closing of the H.253. Further, when a signal indicating an abnormality of the storage battery unit 210 is detected, if the first current path 257a cannot be blocked due to contact welding with the first electromagnetic contactor 251, the third electromagnetic contactor 253 In response, a disconnection signal is output.
  • FIG. 6 is a diagram illustrating an example in which the first electromagnetic contactor 251 and the third electromagnetic contactor 253 are connected in series on the first current path 257a.
  • an electromagnetic contactor may be connected in series to the second electromagnetic contactor 252 on the second current path 257b, and no electromagnetic contactor may be connected in series to the first electromagnetic contactor 251.
  • the invention according to the present embodiment may be specified by the items described below.
  • (Item 1) An electromagnetic contactor disposed on a current path connectable to the storage battery and electrically connecting or disconnecting the current path; A controller for controlling the operation of the electromagnetic contactor, The controller is (1) When the magnetic contactor is connected to a current path, when outputting a disconnection signal for instructing to disconnect the current path to the magnetic contactor, the disconnection signal is output while being activated. , (2) Restarting before outputting a connection signal for instructing connection of the current path when the magnetic contactor is cutting off the current path; A switching device characterized by that.
  • the control unit outputs the disconnection signal when detecting a signal due to turning off an emergency stop switch, a stop signal from the master storage battery management unit 220, or a signal suggesting an abnormality of the storage battery.
  • Switching device (Item 3) 3. The switching device according to item 1 or 2, wherein the electromagnetic contactor is configured by connecting two electromagnetic contactors having different polarities in parallel.
  • the current path includes a first current path connected to the positive terminal of the storage battery, and a second current path connected to the negative terminal of the storage battery, The said electromagnetic contactor is provided with the 1st electromagnetic contactor arrange
  • the switching device according to any one of 1 to 3.
  • the current path includes a first current path connected to the positive terminal of the storage battery, and a second current path connected to the negative terminal of the storage battery,
  • the electromagnetic contactor includes a first electromagnetic contactor disposed on the first current path, and a second electromagnetic contactor disposed on the second current path,
  • the control unit detects a signal suggesting abnormality of the storage battery, the control unit outputs a disconnection signal to one of the first electromagnetic contactor and the second electromagnetic contactor, 5.
  • the switching device according to any one of items 1 to 4, wherein a cutting signal is output to the magnetic contactor.
  • Signals that indicate abnormalities in the storage battery are signals that indicate overdischarge of the storage battery, signals that indicate overcharge of the storage battery, signals regarding the temperature of the storage battery, signals that indicate that the storage battery is overvoltage, and current that flows through the current path 6.
  • the switching device according to any one of items 2 to 5, including at least one of signals indicating that is an overcurrent.
  • a storage battery A current path connectable to the storage battery; An electromagnetic contactor disposed on the current path and electrically connecting or disconnecting the current path; A controller for controlling the operation of the electromagnetic contactor, The controller is (1) When the magnetic contactor is connected to a current path, when outputting a disconnection signal for instructing to disconnect the current path to the magnetic contactor, the disconnection signal is output while being activated. , (2) Restarting before outputting a connection signal for instructing connection of the current path when the magnetic contactor is cutting off the current path; A storage battery system characterized by that.
  • the control unit outputs the disconnection signal when detecting a signal due to turning off an emergency stop switch, a stop signal from the master storage battery management unit 220, or a signal suggesting an abnormality of the storage battery.
  • Storage battery system. (Item 10)
  • the current path includes a first current path connected to the positive terminal of the storage battery, and a second current path connected to the negative terminal of the storage battery, Item 8 is characterized in that the electromagnetic contactor comprises a first electromagnetic contactor disposed on the first current path and a second electromagnetic contactor disposed on the second current path. Or the storage battery system of 9.
  • the current path includes a first current path connected to the positive terminal of the storage battery, and a second current path connected to the negative terminal of the storage battery,
  • the electromagnetic contactor includes a first electromagnetic contactor disposed on the first current path, and a second electromagnetic contactor disposed on the second current path,
  • the control unit detects a signal suggesting abnormality of the storage battery, the control unit outputs a disconnection signal to one of the first electromagnetic contactor and the second electromagnetic contactor, 11.
  • the storage battery system according to any one of items 8 to 10, wherein a cutting signal is output to the magnetic contactor.
  • the present invention can be used for a switching device that opens and closes a current path connected to a storage battery.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

Dans un dispositif de commutation, un contacteur électromagnétique est disposé sur un trajet de courant (257) susceptible d'être connecté à une unité (210) d'accumulateur et qui connecte et déconnecte électriquement le trajet de courant (257). Une unité de commande (270) fonctionne de la façon suivante : (1) lors de l'émission, vers le contacteur électromagnétique, d'un signal de déconnexion donnant l'instruction au contacteur électromagnétique de déconnecter le trajet de courant (257) lorsque le contacteur électromagnétique connecte le trajet de courant (257), l'unité de commande (270) émet le signal de déconnexion tout en étant activée; (2) lorsque le contacteur électromagnétique déconnecte le trajet de courant (257), l'unité de commande (270) est redémarrée avant l'émission, vers le contacteur électromagnétique, d'un signal de connexion donnant l'instruction au contacteur électromagnétique de connecter le trajet de courant (257).
PCT/JP2013/005571 2013-09-20 2013-09-20 Dispositif de commutation et système d'accumulateur Ceased WO2015040655A1 (fr)

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JP2018509868A (ja) * 2014-12-16 2018-04-05 エービービー シュヴァイツ アクチェンゲゼルシャフト エネルギーパネル装置の電力消費
JP2020501299A (ja) * 2017-07-31 2020-01-16 エルジー・ケム・リミテッド バッテリー管理装置及びそれを含むバッテリーパック
CN110771051A (zh) * 2017-06-29 2020-02-07 陈彦伯 可供电力线通讯网络跨相位的无熔丝开关
CN114122595A (zh) * 2021-11-02 2022-03-01 国网湖北省电力有限公司宜昌供电公司 变电站直流系统蓄电池模组安装及更换维护方法
US20240421409A1 (en) * 2023-06-15 2024-12-19 Schneider Electric It Corporation System and method to connect and disconnect one or more lithium-ion battery

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Publication number Priority date Publication date Assignee Title
JP2018509868A (ja) * 2014-12-16 2018-04-05 エービービー シュヴァイツ アクチェンゲゼルシャフト エネルギーパネル装置の電力消費
CN110771051A (zh) * 2017-06-29 2020-02-07 陈彦伯 可供电力线通讯网络跨相位的无熔丝开关
JP2020501299A (ja) * 2017-07-31 2020-01-16 エルジー・ケム・リミテッド バッテリー管理装置及びそれを含むバッテリーパック
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CN114122595A (zh) * 2021-11-02 2022-03-01 国网湖北省电力有限公司宜昌供电公司 变电站直流系统蓄电池模组安装及更换维护方法
CN114122595B (zh) * 2021-11-02 2023-06-02 国网湖北省电力有限公司宜昌供电公司 变电站直流系统蓄电池模组安装及更换维护方法
US20240421409A1 (en) * 2023-06-15 2024-12-19 Schneider Electric It Corporation System and method to connect and disconnect one or more lithium-ion battery

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