WO2014196200A1 - Dispositif d'interruption et système de conversion de puissance - Google Patents

Dispositif d'interruption et système de conversion de puissance Download PDF

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Publication number
WO2014196200A1
WO2014196200A1 PCT/JP2014/002979 JP2014002979W WO2014196200A1 WO 2014196200 A1 WO2014196200 A1 WO 2014196200A1 JP 2014002979 W JP2014002979 W JP 2014002979W WO 2014196200 A1 WO2014196200 A1 WO 2014196200A1
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WO
WIPO (PCT)
Prior art keywords
fuse
current
storage battery
power
overload
Prior art date
Application number
PCT/JP2014/002979
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English (en)
Japanese (ja)
Inventor
卓也 香川
Original Assignee
パナソニックＩｐマネジメント株式会社
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 パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2014196200A1 publication Critical patent/WO2014196200A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • H01H85/0445—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified fast or slow type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H01H2085/025—Structural association with a binding post of a storage battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/46—Circuit arrangements not adapted to a particular application of the protective device

Definitions

  • the present invention generally relates to a cutoff device and a power conversion system, and more particularly, to a cutoff device inserted in a DC power feeding path formed between a power conversion device and a storage battery of an electric vehicle, and power using the same. Concerning the conversion system.
  • a charger / discharger including a cable extending from the main body and a connector (charge / discharge connector) for connecting the cable to the vehicle is used (Reference 1: JP2013-31348A). reference).
  • the connector is provided with a switch (electromagnetic switch) that cuts off the current when the value of the current flowing through the cable is equal to or greater than a predetermined value.
  • the present invention has been made in view of the above-described reasons, and even when an excessive abnormal current exceeding the rated interrupting current of the fuse flows, the interrupting device capable of interrupting the abnormal current more quickly, and power using the same Provide a conversion system.
  • the interrupting device of the present invention includes a first fuse electrically connected in series on a DC power feeding path formed between the storage battery and the power converter outside the electric vehicle equipped with the storage battery. 2 fuse, and is configured to cut off the abnormal current when the abnormal current flows through the power supply path.
  • the power conversion system of the present invention is connected to the above-described interrupting device, the power conversion device, and the power conversion device via a cable, and is detachably attached to the electric vehicle, thereby the power conversion device. And a connector for forming the feeding path between the battery and the storage battery.
  • FIG. 1 is a block diagram illustrating an overall schematic configuration of a first embodiment. It is explanatory drawing of the charge characteristic of the power conversion system which concerns on Embodiment 1.
  • FIG. 6 is a block diagram illustrating an overall schematic configuration of a modification of the first embodiment.
  • An electric vehicle charges a storage battery mounted on the vehicle using a charger outside the vehicle, and travels using electric energy stored in the storage battery.
  • an electric vehicle (EV) that travels by the output of an electric motor is taken as an example of an electric vehicle, but the electric vehicle is not limited to an electric vehicle.
  • the electric vehicle may be, for example, a plug-in hybrid vehicle (PHEV) that travels by combining the output of the engine and the output of the electric motor.
  • PHEV plug-in hybrid vehicle
  • the power conversion system is configured to be used for both charging and discharging of the storage battery of the electric vehicle by performing power conversion in both directions.
  • the power conversion system converts AC power supplied from a commercial power source (system power source) or a power generation facility such as a solar power generation facility attached to a house to DC power when charging the storage battery, and converts the converted power.
  • the battery is charged by supplying to the electric vehicle.
  • the power conversion system converts the DC power discharged from the storage battery into AC power, and supplies the converted power to the house to supply power to the equipment and facilities in the house V2H (Vehicle to Home).
  • the power conversion system only needs to be configured to transfer power to and from the storage battery, and may be configured to perform only one of charging and discharging of the storage battery.
  • an electronic control unit mounted on the electric vehicle calculates a charging current value corresponding to the state of the storage battery, such as the remaining capacity and temperature of the storage battery.
  • the power conversion system receives a charge current value instruction from the electric vehicle by CAN (Controller (Area Network) communication, and controls the output current value according to the instruction.
  • CAN Controller (Area Network) communication
  • the shut-off device 1 As shown in FIG. 1, the shut-off device 1 according to the present embodiment has an electricity supply circuit 4 formed between the storage battery 21 and the power conversion device 3 outside the electric vehicle 2 on which the storage battery 21 is mounted. A first fuse 11 and a second fuse 12 connected in series are provided. The interruption device 1 is configured to interrupt the abnormal current when the abnormal current flows through the power supply path 4.
  • the power conversion system 10 includes the above-described blocking device 1, the power conversion device 3, and the connector 5.
  • the connector 5 is connected to the power conversion device 3 via the cable 6, and is detachably attached to the electric vehicle 2 to form the power supply path 4 between the power conversion device 3 and the storage battery 21.
  • the interrupting device 1 is provided in the connector 5.
  • the first fuse 11 out of the first fuse 11 and the second fuse 12 has the overload current within a predetermined time when the overload current flows to the power supply path 4 as the abnormal current. It is desirable that the fuse has a predetermined characteristic to be interrupted.
  • the overload current is a current that is larger than a predetermined lower limit value and smaller than a predetermined upper limit value.
  • the rated voltage of the fuse having the predetermined characteristic is larger than the applied voltage applied across the fuse during the overload, and the difference from the applied voltage is not less than a predetermined value.
  • first fuse 11 and the second fuse 12 are fuses having the same characteristics.
  • the power conversion device 3 is electrically connected to the storage battery 21 via the power supply path 4 with the connector 5 attached to the electric vehicle 2, and performs power conversion when the storage battery 21 is charged and discharged.
  • the power conversion device 3 converts supply power from a commercial power source or the like into, for example, direct current power of 50 to 600 V and supplies it to the electric vehicle 2.
  • the power conversion device 3 converts the discharge power from the storage battery 21 into, for example, 100 V AC power and supplies the converted power to the house.
  • the power conversion device 3 may be a wall-mounted type attached to a wall of a building or a stationary type installed on the ground.
  • the cable 6 has a pair of power supply lines that constitute a part of the power supply path 4. These pair of power supply lines are used for power supply from the power conversion device 3 to the storage battery 21 during charging and power supply from the storage battery 21 to the power conversion device 3 during discharge.
  • the cable 6 has a communication line (not shown) in addition to the pair of power supply lines. In a state where the connector 5 is mounted on the electric vehicle 2, the communication line is connected to the electric vehicle 2 via the connector 5, and the power conversion device 3 can communicate with the electric vehicle 2 via the communication line.
  • the connector 5 is connected to the tip of the cable 6 and is detachably attached to an inlet (not shown) as a connection port provided in the electric vehicle 2.
  • the connector 5 is electrically connected to the inlet to electrically connect the power line and the communication line of the cable 6 to the electric vehicle 2. Therefore, the connector 5 forms the power feeding path 4 between the power conversion device 3 and the storage battery 21 in a state where the connector 5 is attached to the electric vehicle 2.
  • the feed path 4 here is a part formed outside the electric vehicle 2 in the feed path formed between the power conversion device 3 and the storage battery 21 as described above, and includes the cable 6 and the connector 5. Consists of. In other words, the power feeding path 4 is formed between a terminal (not shown) to which the cable 6 of the power conversion device 3 is connected and the electric vehicle 2.
  • the power supply path 4 is for supplying DC power
  • the power supply path 41 connected to the positive electrode of the storage battery 21 is connected to the high potential side (positive electrode) 41 and the low potential side (negative electrode) connection circuit 42 connected to the negative electrode of the storage battery 21. It is a pair of electric circuit which becomes.
  • the connector 5 includes the shut-off device 1. That is, the shut-off device 1 is provided so as to be inserted into the power supply path 4 in the connector 5.
  • the shut-off device 1 will be described later in detail.
  • the connector 5 includes a latch mechanism (not shown) that mechanically holds the state where the connector 5 is mounted on the electric vehicle 2 and a lock mechanism (not shown) that restricts the operation of the latch mechanism. Yes.
  • the connector 5 prevents the latching state of the latching mechanism from being released by setting the locking mechanism to the locked state during charging and discharging of the storage battery 21, and prevents the electric vehicle 2 from coming off.
  • the electric vehicle 2 includes a main fuse 22 inserted between the storage battery 21 and an inlet to which the connector 5 is connected, in addition to the storage battery 21.
  • the main fuse 22 is inserted between the positive electrode and the inlet of the storage battery 21.
  • the main fuse 22 is composed of a fuse having a sufficiently large rated current as compared with the first fuse 11 and the second fuse 12 constituting the interrupting device 1. Therefore, when an abnormal current flows through the power supply path 4, the abnormal current is interrupted by the interrupting device 1 before the main fuse 22 of the electric vehicle 2 is melted.
  • a fuse may be provided inside the power conversion device 3 as a configuration for protecting the circuit from an abnormal current separately from the interrupt device 1.
  • FIG. 2 shows an example of the charging characteristics of the storage battery 21 by the power conversion system 10 described above.
  • the horizontal axis indicates the charging current of the storage battery 21
  • the vertical axis indicates the voltage of the storage battery 21.
  • the power conversion system 10 performs constant current charging if the remaining capacity (storage amount) of the storage battery 21 is less than a predetermined amount, and performs constant voltage charging when the remaining capacity reaches a predetermined amount.
  • the voltage of the storage battery 21 changes according to the remaining capacity of the storage battery 21. Therefore, in the example of FIG. 2, the power conversion system 10 charges the storage battery 21 with a charging current of 20A until the voltage of the storage battery 21 reaches around 450V, and when the voltage of the storage battery 21 reaches around 450V, the charging voltage becomes 450V.
  • the charging current is reduced so as not to exceed.
  • the maximum value of the current flowing through the power feeding path 4 is 20A.
  • the power conversion system 10 described above is configured such that when the storage battery 21 is discharged, that is, when power is supplied to equipment and facilities in the house, the discharge power of the storage battery 21 is constant or according to the load.
  • the storage battery 21 is discharged so as to change the discharge current.
  • the current flowing through the power supply path 4 is 20 A at the maximum even when both the charging and discharging of the storage battery 21 are combined.
  • the interruption device 1 of the present embodiment is inserted into the DC power supply path 4 formed between the power conversion device 3 and the storage battery 21 by connecting the power conversion device 3 to the electric vehicle 2 as described above.
  • the abnormal current flows through the power supply path 4, the abnormal current is cut off.
  • the abnormal current is an excessive current exceeding the normal range, and is generated when, for example, the positive electrode and the negative electrode of the power supply path 4 are short-circuited via the short-circuit element 7 due to insulation deterioration of the cable 6.
  • the normal range is a current value range that is assumed to flow through the power supply path 4 at the normal time. Therefore, the abnormal current is a current having a magnitude exceeding at least the upper limit value of the normal range.
  • the storage battery 21 serves as a power source regardless of whether the storage battery 21 is charged or discharged, an excessive short-circuit current flows through the power supply path 4 through the interrupting device 1 and the short-circuit element 7. Becomes an abnormal current.
  • the power conversion device 3 has a function of detecting an abnormality in the charging current and stopping the output of the charging current. If the storage battery 21 is being charged, the power output from the power conversion device 3 is performed by this function. Stops.
  • the storage battery 21 when the storage battery 21 is discharged, for example, when the power converter 3 is out of order or the equipment or equipment in the house that receives power supply from the power converter 3 is overloaded, the storage battery 21 becomes the power source and the shut-off device 1 and power An excessive overload current flows through the conversion device 3 to the power supply path 4. In this case, the overload current becomes an abnormal current. As will be described in detail later, the overload current is smaller than the short-circuit current.
  • the interruption device 1 functions so as to interrupt the abnormal current when the abnormal current flows through the power supply path 4 as described above.
  • the abnormal current flows in the power supply path 4 is not limited to these cases.
  • the power conversion device 3 becomes a power source and is shut off An excessive current (abnormal current) flows through the device 1 through the power supply path 4. Therefore, also in this case, the interrupting device 1 functions to interrupt an abnormal current flowing in the power supply path 4.
  • the interrupting device 1 is inserted into the high potential side (positive electrode) of the power supply path 4 and is connected to the first fuse 11 and the second fuse 12 connected in series. Consists of fuses.
  • the power supply path 4 includes a high-potential-side circuit 41 connected to the positive electrode of the storage battery 21 and a low-potential-side circuit 42 connected to the negative electrode of the storage battery 21, and the first fuse 11 and the second fuse. 12 are inserted into the electric circuit 41 on the high potential side.
  • each of the first fuse 11 and the second fuse 12 has a rated current of 40 A, which is twice the maximum value (20 A) of the current flowing through the power supply path 4 during normal operation, that is, the upper limit value of the normal range.
  • the rated current is a current value that defines the fusing characteristics of the fuse element (fusible body), and is the magnitude (current value) of the current that does not blow the fuse element even if it flows through the fuse.
  • fuses have their fusing characteristics determined using the rated current such that, for example, a fuse element melts within 60 minutes at a current of 135% of the rated current.
  • Each of the first fuse 11 and the second fuse 12 is a current limiting fuse.
  • the current-limiting fuse is filled with an arc-extinguishing agent around the fuse element in the container (tube), and after the fuse element is blown, a relatively high arc voltage is generated to limit the increase in overcurrent. It is a fuse.
  • the interrupting device 1 only needs to include at least the first fuse 11 and the second fuse 12, and may include three or more fuses connected in series.
  • the rated breaking current is a maximum value of a current that is guaranteed to be able to cut off the current by extinguishing the arc generated after the fuse element is blown, and is a current value sufficiently larger than the rated current.
  • the breaking device 1 of the present embodiment the first fuse 11 and the second fuse 12 are connected in series, so that an excessive abnormal current exceeding the rated breaking current flows in a short circuit state or the like. Even so, the energy applied to the breaking device 1 is distributed to the fuses 11 and 12. Therefore, the breaking device 1 can suppress the energy applied to each of the first fuse 11 and the second fuse 12 to be small, and can prevent the fuses 11 and 12 from being damaged. As a result, the interrupting device 1 has an advantage that the abnormal current can be quickly interrupted by quickly extinguishing the arc so as not to be sustained.
  • the current limiting fuse cannot secure sufficient energy for extinguishing the arc if it is in a small current area near the rated current even if the abnormal current exceeds the rated current. Abnormal current may not be cut off.
  • the breaking device 1 of the present embodiment when an excessive abnormal current exceeding the rated breaking current flows in a short circuit state or the like, the first fuse 11 and the second fuse 12 are blown substantially simultaneously, so that each fuse 11 , 12 is applied to a lower voltage.
  • the voltage applied to each of the fuses 11 and 12 becomes low, the abnormal current increases and escapes from the above-mentioned small current region, so that the breaker 1 can extinguish the arc quickly.
  • the breaking device 1 cuts off the abnormal current at both the first fuse 11 and the second fuse 12 when an excessive abnormal current exceeding the rated breaking current flows in a short circuit state or the like.
  • the interrupting device 1 interrupts one of the first fuse 11 and the second fuse 12 with an abnormal current.
  • the overload current here is a current that is larger than the rated current but smaller than the rated breaking current and short-circuit current, and is larger than a predetermined lower limit value and smaller than a predetermined upper limit value.
  • the lower limit value and the upper limit value are the lower limit value and the upper limit value in the small current region near the rated current as described above.
  • the breaking device 1 When the overload current (abnormal current) exceeding the rated current flows during overload (overload state), the breaking device 1 first blows off either the first fuse 11 or the second fuse 12. As a result, an arc is generated in the blown fuse (one) of the first fuse 11 and the second fuse 12, and the abnormal current flowing through the power supply path 4 is reduced, so that the other fuse is blown. Absent. However, in this case, since the blown (one) fuse is required to have a capability of quickly extinguishing the arc and interrupting the abnormal current, the interrupting device 1 of the present embodiment adopts the following configuration. .
  • the interrupting device 1 of the present embodiment has a predetermined characteristic that at least the first fuse 11 out of the first fuse 11 and the second fuse 12 interrupts an overload current within a predetermined time when overloaded. This is a so-called overload protection fuse.
  • the fuse for overload protection has a rated voltage that is greater than or equal to a predetermined value compared to the applied voltage applied across the fuse during overload.
  • the configuration is set to be large.
  • the interrupting device 1 uses a rated voltage fuse having a sufficient margin with respect to the applied voltage as the fuse for overload protection so that the rated voltage is sufficiently higher than the applied voltage.
  • the rated voltage is the magnitude (voltage value) of a voltage that does not re-energize even if applied between the electrodes after the fuse element (fusible element) is melted.
  • the overload protection fuse when the voltage of the storage battery 21 is 450 V at maximum (see FIG. 2), the overload protection fuse has an applied voltage of about 450 V at the time of overload.
  • a fuse having a rated voltage of, for example, 750 V is used so as to have a margin.
  • the difference between the rated voltage and the applied voltage at the time of overload is 300V. That is, the rated voltage of the fuse for overload protection is such that the difference from the applied voltage applied across the fuse during overload is not less than a predetermined value, and the predetermined value here is, for example, 100 to 400V. It is desirable that the voltage be about 300V.
  • the fuse for overload protection having a sufficient margin for the applied voltage with respect to the applied voltage has a wider current range in which the arc can be extinguished than a fuse with no sufficient margin for the applied voltage. Therefore, the overload protection fuse can cut off the overload current (abnormal current) within a predetermined time even during the overload as described above.
  • the first fuse 11 and the second fuse 12 are fuses having the same characteristics. That is, the first fuse 11 and the second fuse 12 are both overload protection fuses having the same characteristics, and here, the rated voltage has a sufficient margin with respect to the applied voltage. Therefore, the circuit breaker 1 can quickly extinguish the arc and cut off the abnormal current in the blown fuse, regardless of which one of the first fuse 11 and the second fuse 12 is blown during overload. Is possible.
  • the breaking device 1 of the present embodiment described above the first fuse 11 and the second fuse 12 connected in series in the power supply path 4 are provided. That is, since the first fuse 11 and the second fuse 12 are connected in series, even if an excessive abnormal current exceeding the rated breaking current flows due to a short circuit or the like, energy applied to the breaking device 1 is transferred to each fuse. 11 and 12. Therefore, the interrupting device 1 can suppress the energy applied to each of the first fuse 11 and the second fuse 12 to be small, and can avoid deterioration of the functions of the fuses 11 and 12. Therefore, this interruption device 1 has an advantage that even when an excessive abnormal current exceeding the rated interruption current of the fuses 11 and 12 flows, the abnormal current can be interrupted more quickly.
  • the power conversion system 10 is provided with such a disconnecting device 1 in the connector 5, for example, even when a short circuit occurs due to insulation deterioration in the cable 6, the abnormal current is quickly disconnected by the interrupting device 1. Is possible.
  • the interrupting device 1 is a fuse having a predetermined characteristic in which at least the first fuse 11 of the first fuse 11 and the second fuse 12 interrupts an overload current within a predetermined time at the time of overload. Therefore, abnormal current can be cut off quickly even during overload.
  • the breaker 1 uses a rated voltage fuse having a sufficient margin with respect to the applied voltage as a fuse having a predetermined characteristic (for overload protection), use a fuse that is less expensive than an all-region breaking fuse. Can do.
  • the circuit breaker 1 detects which one of the first fuse 11 and the second fuse 12 is blown during an overload.
  • the abnormal current can be reliably interrupted in the blown fuse.
  • one of the first fuse 11 and the second fuse 12 is inserted into the positive electrode (high potential side) of the power feeding path 4.
  • the other may be configured to be inserted in the negative electrode (low potential side) of the power feeding path 4. That is, the power supply path 4 has a high-potential-side electric circuit 41 connected to the positive electrode of the storage battery 21 and a low-potential-side electric circuit 42 connected to the negative electrode of the storage battery 21. Therefore, one of the first fuse 11 and the second fuse 12 may be inserted into the high-potential side electric circuit 41 and the other may be inserted into the low-potential side electric circuit 42.
  • the first fuse 11 is inserted into the positive electrode of the power supply path 4
  • the second fuse 12 is inserted into the negative electrode of the power supply path 4.
  • the circuit breaker 1 has an excessively large rated breaking current in a short circuit state or the like in the configuration in which the first fuse 11 and the second fuse 12 are separately inserted into the positive electrode and the negative electrode of the power supply path 4. It functions as a double-cut fuse when an abnormal current flows. That is, in a short circuit state or the like, the interrupting device 1 interrupts the abnormal current at both the positive electrode and the negative electrode of the power supply path 4 because both the first fuse 11 and the second fuse 12 are melted substantially simultaneously. be able to.
  • the circuit breaker 1 according to the present embodiment is a fuse having a characteristic that the time required for the first fuse 11 to blow when overloaded is shorter than that of the second fuse 12. Is different.
  • the same configurations as those of the first embodiment are denoted by common reference numerals, and description thereof is omitted as appropriate.
  • the first fuse 11 and the second fuse 12 are overload protection fuses having the same characteristics, whereas in the present embodiment, the first fuse 11 and the second fuse 12 are the same.
  • This fuse has a different characteristic from the fuse 12 of FIG.
  • the interrupting device 1 has a predetermined characteristic in which only the first fuse 11 out of the first fuse 11 and the second fuse 12 interrupts an overload current within a predetermined time during an overload.
  • a rated voltage (for example, 750V) fuse having a sufficient margin for the applied voltage is used as the first fuse 11
  • a rated voltage (for example, 500V) having no sufficient margin for the applied voltage is used.
  • This fuse is used as the second fuse 12.
  • the first fuse 11 is made of a fuse whose rated current is lower than that of the second fuse 12, for example, so that the time taken to blow when overloaded is shorter than that of the second fuse 12.
  • the interrupting device 1 uses a fuse having different fusing characteristics between the first fuse 11 and the second fuse 12, such as a rush-proof type, a time delay type, and a fast-blow type. The time difference required for fusing when overloaded may be set.
  • the breaking device 1 having the above-described configuration, when an excessive abnormal current exceeding the rated breaking current flows in a short circuit state or the like, the first fuse 11 and the second fuse 12 are blown substantially simultaneously.
  • the abnormal current can be interrupted in the same manner as the interrupting device 1 of the first embodiment. In the case of a short circuit state or the like, even if there is a time difference in the timing of fusing between the first fuse 11 and the second fuse 12, the time difference is about 10 ms or less, for example. .
  • the interrupting device 1 interrupts the abnormal current with the first fuse 11. That is, in the circuit breaker 1, when an overload current (abnormal current) exceeding the rated current flows during an overload (overload state), the first fuse 11 is first blown. As a result, an arc is generated in the first fuse 11 and the abnormal current flowing through the power supply path 4 is reduced, so that the second fuse 12 does not blow. Since the first fuse 11 is an overload protection fuse having a predetermined characteristic for interrupting an overload current within a predetermined time in an overload state, the arc is quickly extinguished to interrupt an abnormal current. Can do.
  • the time required for the first fuse 11 to blow when overloaded is shorter than that of the second fuse 12, so that one fuse interrupts the abnormal current.
  • the abnormal current is always interrupted by the first fuse 11. Therefore, the circuit breaker 1 only needs to be an overload protection fuse among the first fuse 11 and the second fuse 12, and the second fuse 12 includes an overload protection fuse. Not normal fuse can be adopted.
  • the second fuse 12 has a fusing characteristic as described below.
  • the second fuse 12 is blown out after the first fuse 11 is blown and before the energy applied to the first fuse 11 reaches the service life limit of the first fuse 11. It is desirable to have such fusing characteristics.
  • the service life limit here is the energy (maximum) energy that allows the fuse to be used without causing damage to the container (tube), for example. If energy exceeding the service life limit is applied to the fuse, the fuse is damaged. there is a possibility.
  • both the first fuse 11 and the second fuse 12 may be melted due to a short circuit state or the like, but the timing at which the first fuse 11 and the second fuse 12 are melted is used. It is desirable to set the time difference as described above. As a result, after the first fuse 11 is blown out, the breaker 1 is blown out by the second fuse 12 before the energy given to the first fuse 11 reaches the service life limit of the first fuse 11 and the abnormal current Can be cut off. Therefore, the breaker 1 can avoid the first fuse 11 from being damaged by the energy applied to the first fuse 11 exceeding the useful limit of the container (tube) after the first fuse 11 is melted.
  • the second fuse 12 does not exceed the service life limit including the energy given to the first fuse 11 until the arc generated in the first fuse 11 is extinguished after the first fuse 11 is blown.
  • the fusing characteristic is that, after the first fuse 11 is blown, the second fuse 12 is blown before the energy applied to the first fuse 11 reaches the service life limit of the first fuse 11.
  • the fusing characteristic is such that the arc of the first fuse 11 is extinguished.
  • the interrupting device 1 can more reliably avoid the damage to the first fuse 11 after the first fuse 11 is melted and the energy applied to the first fuse 11 exceeds the service life limit.
  • blocking apparatus 1 should just be inserted in the electric power feeding path 4 formed between the power converter device 3 and the storage battery 21 outside the electric vehicle 2 by connecting the power converter device 3 to the electric vehicle 2.
  • the configuration is not limited to that provided in the connector 5 as in the above embodiments.
  • the interrupting device 1 may be provided in the cable 6, for example.

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  • Emergency Protection Circuit Devices (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Fuses (AREA)

Abstract

La présente invention concerne un dispositif d'interruption, qui est situé à l'extérieur d'un véhicule électrique équipé d'une cellule de stockage, et qui comprend un premier fusible et un second fusible qui sont électriquement connectés en série sur une ligne d'alimentation formée entre la cellule de stockage et un dispositif de conversion de puissance. Le dispositif d'interruption est configuré de façon à interrompre un courant anormal en cas de circulation de ce courant anormal dans la ligne d'alimentation.
PCT/JP2014/002979 2013-06-05 2014-06-04 Dispositif d'interruption et système de conversion de puissance WO2014196200A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2013-119285 2013-06-05
JP2013119285A JP2014235997A (ja) 2013-06-05 2013-06-05 遮断装置および電力変換システム

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WO2014196200A1 true WO2014196200A1 (fr) 2014-12-11

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PCT/JP2014/002979 WO2014196200A1 (fr) 2013-06-05 2014-06-04 Dispositif d'interruption et système de conversion de puissance

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JP (1) JP2014235997A (fr)
WO (1) WO2014196200A1 (fr)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN107290676A (zh) * 2017-06-26 2017-10-24 广东电网有限责任公司珠海供电局 一种蓄电池组主熔断器熔断及开路检测方法及装置
US20230107559A1 (en) * 2019-07-08 2023-04-06 Sungrow Power Supply Co., Ltd. High voltage battery cluster, and overcurrent protection circuit and switch box thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5861688B2 (ja) * 2013-11-14 2016-02-16 トヨタ自動車株式会社 充放電システムおよびそれに用いられる車両
KR20170120000A (ko) 2016-04-20 2017-10-30 엘에스산전 주식회사 전기자동차 충전 시스템 제어장치

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933733A (ja) * 1982-08-18 1984-02-23 エナジーサポート株式会社 眼流ヒユ−ズのヒユ−ズエレメント
JPS62113332A (ja) * 1985-11-08 1987-05-25 ク−パ−・インダストリ−ス・インコ−ポレ−テツド タイムラグ電気ヒユ−ズ
JPS6363983U (fr) * 1986-10-17 1988-04-27
JP2010252455A (ja) * 2009-04-13 2010-11-04 Nippon Telegr & Teleph Corp <Ntt> 回路遮断器
WO2013018738A1 (fr) * 2011-07-29 2013-02-07 シャープ株式会社 Chargeur, procédé de commande de chargeur, programme de commande et support d'enregistrement
JP2013074762A (ja) * 2011-09-29 2013-04-22 Mitsubishi Motors Corp 送電回路の保護構造

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933733A (ja) * 1982-08-18 1984-02-23 エナジーサポート株式会社 眼流ヒユ−ズのヒユ−ズエレメント
JPS62113332A (ja) * 1985-11-08 1987-05-25 ク−パ−・インダストリ−ス・インコ−ポレ−テツド タイムラグ電気ヒユ−ズ
JPS6363983U (fr) * 1986-10-17 1988-04-27
JP2010252455A (ja) * 2009-04-13 2010-11-04 Nippon Telegr & Teleph Corp <Ntt> 回路遮断器
WO2013018738A1 (fr) * 2011-07-29 2013-02-07 シャープ株式会社 Chargeur, procédé de commande de chargeur, programme de commande et support d'enregistrement
JP2013074762A (ja) * 2011-09-29 2013-04-22 Mitsubishi Motors Corp 送電回路の保護構造

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107290676A (zh) * 2017-06-26 2017-10-24 广东电网有限责任公司珠海供电局 一种蓄电池组主熔断器熔断及开路检测方法及装置
CN107290676B (zh) * 2017-06-26 2023-05-02 广东电网有限责任公司珠海供电局 一种蓄电池组主熔断器熔断及开路检测方法及装置
US20230107559A1 (en) * 2019-07-08 2023-04-06 Sungrow Power Supply Co., Ltd. High voltage battery cluster, and overcurrent protection circuit and switch box thereof
US11942775B2 (en) * 2019-07-08 2024-03-26 Sungrow Power Supply Co., Ltd. High voltage battery cluster, and overcurrent protection circuit and switch box thereof

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