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Metal Hybrid PPTC- (MHP)

| Technology

The rapidly expanding market for high-ratedischarge Lithium ion (Li-ion) batteries used in
applications such as cordless power tools, e-bikes and back-up power supplies has created the need or cost-effective circuit protection devices capable of providing 30A+ hold currents at voltage ratings over 30VDC. To meet this need, a new hybrid device has been developed that connects a bimetal protector in parallel with a PPTC (polymeric positive
temperature coeffi cient) device. The resulting Metal Hybrid PPTC (MHP) device helps provide resettable overcurrent protection while also utilizing the low resistance of the PPTC device to help prevent arcing in the bimetal protector at higher currents.

 

Benefits:

  • Fills market need for battery protection devices rated above 30A and 30VDC
  • Provides resettable overcurrent and short circuit protection in Li-ion batteries
  • Helps protect Li-ion cells from damage from abnormal high currents that could cause heat damage and lead to premature cell end of life and potential fi eld returns
  • Arc suppression: Current shunts to the PPTC due to its low resistance helping to suppress arcing all while helping protect the contacts from damage or welding shut
  • Double make/double break contact design allows for a high current rating in a smaller device package

 

For more information or technical support, contact us by phone +4940523052-28 or by mail (info@ibh-elektrotechnik.de).

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