Pyro-Fuse
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Pyro-Fuse

Eco-friendly electric vehicles (EV, HEV, PHV) have rapidly penetrated the market as social awareness towards environmental protection increased over the years.
EVs equipped with high-voltage battery requires anti-electrification and secondary disasters in case of traffic accidents and malfunctions.

Daicel Safety Strategic Business Unit(SBU)s' Pyro-Fuse enables safe, instantaneous shutdown of high-voltage electric currents.

Pyro-Fuse could also be utilized not only for EVs but also any industrial applications in need of instant circuit isolation.

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Pyro-Fuse

Product lineup

Daicel Safety Strategic Business Unit(SBU)s' have developed Pyro-Fuse that enables safe, instantaneous shutdown of high-voltage electrical currents.
Product customization is also available based on usage environments and voltage requirements.

PDD *Power Disconnect Device

Pyro-Fuse performance
Model PDD2 PDD3 PDD5.0 PDD5.1 PDD6
Appearance PDD2 PDD3 PDD5.0 PDD5.1 PDD6
Breaking capacity 2,300A/48VDC/7µH 3,000A/100VDC/10µH 15,000A/500VDC/10µH
500A/600VDC/50µH
20,000A/500VDC/20µH
16,000A/920VDC/10µH
15,000A/900VDC/25µH
25,000A/915VDC/10µH
Operating temperature range −40℃〜+85℃ −40℃〜+85℃ −40℃〜+85℃ −40℃〜+85℃ −40℃〜+85℃
Busbar resistance
(pre-operation:+23℃)
<0.1mΩ <0.1mΩ <0.1mΩ <0.1mΩ <0.1mΩ
Busbar resistance
(post-operation:500VDC)
>10MΩ >10MΩ >10MΩ >10MΩ >10MΩ
Continuous current rating 200A 200A 350A 350A 350A
Function (breaking) time <2ms <2ms <2ms <2ms <2ms
Geometry
(D×W×L:mm)
19×70×45 15×60×61 44×88×68 44×88×80 62×112×120
Unit weight (g) 40g 60g 190g 220g 510g
Outgassing outgas outgas no outgas no outgas no outgas
Product Data Sheet
(PDF)
PDF:254KB PDF:251KB PDF:622KB PDF:617KB PDF:520KB

Operating principle of Pyro-Fuses

When the signal is detected from the vehicle, an ignition current is generated to operate the Pyro-Fuse, shutting down the circuit and preventing electrical flow.

    1. The ignition current is generated based on the ECU signal.
    1. The initiator ignition operates gas emission.
    1. The pressurized piston detaches the busbar, shutting down the electric circuit.

Pyro-Fuse application

Automobile application

Instant electrical shutdown is realized based on the high reliability cultivated in the Inflator field.
Daicel Safety Strategic Business Unit(SBU)s' have developed Pyro-Fuse that enables safe, instantaneous shutdown of high-voltage electrical currents.
We provide broad application of Pyro-Fuse requirements that could be used for not only electric vehicles, but also gasoline vehicles as well.

Automobile application

Intentional shutdown application examples
  1. Circuit malfunctions

    Circuit malfunctions

    Protection from overcurrent due to short circuits and malfunctions.

  2. Accidents

    Accidents

    Protection from electric shocks and fire by isolating the battery in case of car crashes.

  3. Overcharging

    Overcharging

    Protection from fire due to overcharging.

Industrial application

Safe electrical shutdown on a millisecond level could also be utilized in systems used for industrial power storages, heavy-duty batteries, recyclable energy storages, and electricity transmissions.

Industrial application

Intentional shutdown application examples
  1. Short circuits

    Short circuits

    Shutting down emergency overcurrent.

  2. Overcharging

    Overcharging

    Controlling battery charging to prevent overcharge.

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