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Battery pack with protective circuit board and electric bicycle including the battery pack

  • US 9,287,591 B2
  • Filed: 09/07/2011
  • Issued: 03/15/2016
  • Est. Priority Date: 03/31/2011
  • Status: Active Grant
First Claim
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1. A battery pack comprising:

  • a battery connecting structure on which a plurality of flat batteries are placed; and

    a protective circuit board that protects the flat batteries during charging and discharging of the flat batteries, a film formation for the protective circuit board being made using a plurality of film forming materials different in viscosity, hardness, and thixotropic properties, wherein circuit components implemented on the protective circuit board include;

    a circuit component having a highest height from the board and having a surface covered only with a first hardening resin, and a circuit component having a surface covered only with a second hardening resin whose viscosity, hardness, and thixotropic properties are lower than those of the first hardening resin.

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