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    • 9. 发明申请
    • Over-temperature protection devices, applications and circuits
    • 过温保护装置,应用和电路
    • US20060273876A1
    • 2006-12-07
    • US11144238
    • 2005-06-02
    • Timothy PachlaStephen Whitney
    • Timothy PachlaStephen Whitney
    • H01H61/06H01H71/18
    • H05K1/0201H05K2201/0308H05K2203/175
    • Over-temperature protection devices, over-temperature applications on substrates, such as printed circuit boards, and over-temperature protection circuits, e.g., over-temperature protection in combination with a fuse or heater are provided. In various embodiments a shape memory alloy member is used, which can either break electrical contact with a conductor (open a circuit) or make electrical contact with a conductor (close a circuit). Upon opening a first circuit, the member can move to contact another conductor and complete a second circuit. The member can close a circuit, which is in parallel with a fused load, to provide a short circuit path that opens a fuse upon an over-temperature condition occurring, e.g., within an electrical device such as a cell phone or battery. Or, the member can be provided in parallel with a heater that energizes upon an overcurrent condition, triggering the member to open a circuit.
    • 提供过温保护装置,诸如印刷电路板的衬底上的过温应用以及过温保护电路,例如与保险丝或加热器组合的过温保护。 在各种实施例中,使用形状记忆合金构件,其可以断开与导体的电接触(打开电路)或者与导体(闭合电路)进行电接触。 在打开第一电路时,构件可以移动以接触另一导体并完成第二电路。 该构件可以闭合与熔融负载并联的电路,以提供短路路径,该短路路径在例如在诸如手机或电池的电气装置内发生的过温状态下打开熔断器。 或者,该构件可以与加热器并联设置,该加热器在过电流状态下通电,触发构件打开电路。