Circuit protection devices
    1.
    发明授权
    Circuit protection devices 失效
    电路保护装置

    公开(公告)号:US06300859B1

    公开(公告)日:2001-10-09

    申请号:US09379684

    申请日:1999-08-24

    CPC classification number: H01C7/027 H01C1/1406

    Abstract: A generally rectangular, planar electrical overcurrent sensing device having a top major surface and a bottom major surface includes a patterned metal foil conductor defined along the top major surface. The metal foil conductor has a first electrode region at one end region, a second electrode region at an opposite end region, and a current-concentrating region extending between the first electrode portion and the second electrode portion. The device further includes a planar sheet of a composition which exhibits PTC behavior and which comprises an organic polymer having a particulate conductive filler dispersed therewithin. The planar sheet has a first major surface in thermal contact with the bridging portion and has an opposite second major surface. A third patterned metal foil electrode secured to the second major surface of the planar PTC sheet is sized and aligned with the current-concentrating region such that heat generated in the current-concentrating region from electrical overcurrent flowing through the metal foil conductor is transferred to the planar sheet exhibiting PTC behavior and reduces a control current flowing to said third patterned metal foil electrode. An insulation layer may be imposed between the patterned metal foil conductor and the PTC sheet layer, and in such case the third patterned metal foil electrode is divided into two conductive areas separated by a gap aligned with the current-concentrating region, thereby providing a four terminal device. Tin pellets may be included in the current-concentrating region to reduce a melting/fracture temperature thereof below a flaming temperature of the organic polymer sheet forming the PTC layer.

    Abstract translation: 具有顶部主表面和底部主表面的大致矩形的平面电过电流感测装置包括沿着顶部主表面限定的图案化金属箔导体。 金属箔导体在一个端部区域具有第一电极区域,在相对端部区域具有第二电极区域,以及在第一电极部分和第二电极部分之间延伸的电流集中区域。 该装置还包括具有PTC性能的组合物的平板,其包含其中分散有颗粒状导电填料的有机聚合物。 平面片具有与桥接部分热接触的第一主表面并且具有相对的第二主表面。 固定到平面PTC片的第二主表面的第三图案化金属箔电极的尺寸和电流集中区域对准,使得在电流集中区域中产生的电流从流过金属箔导体的电过流转移到 显示PTC行为的平板状片,并且减少流向所述第三图案化金属箔电极的控制电流。 可以在图案化的金属箔导体和PTC片层之间施加绝缘层,在这种情况下,第三图案化金属箔电极被分成由与电流集中区域对准的间隙分开的两个导电区域,从而提供四 终端设备。 锡颗粒可以包括在电流浓缩区域中,以将其熔融/断裂温度降低到形成PTC层的有机聚合物片材的燃烧温度以下。

    Three-function reflowable circuit protection device
    3.
    发明授权
    Three-function reflowable circuit protection device 有权
    三功能回流电路保护装置

    公开(公告)号:US08941461B2

    公开(公告)日:2015-01-27

    申请号:US13019976

    申请日:2011-02-02

    Abstract: A circuit protection device includes a substrate with first and second electrodes connected to the circuit to be protected. The circuit protection device also includes a heater element between the first and second electrodes. A sliding contact is connected by a sensing element to the first electrode, second electrode, and heater element, thereby bridging and providing a conductive path between each. A spring element is held in tension by, and exerts a force parallel to a length of the substrate against, the sliding contact. Upon detection of an activation condition, the sensing element releases the sliding contact and the force exerted by the spring element moves the sliding contact to another location on the substrate at which the sliding contact no longer provides a conductive path between the first electrode, second electrode, and heater element.

    Abstract translation: 电路保护装置包括具有连接到待保护电路的第一和第二电极的基板。 电路保护装置还包括在第一和第二电极之间的加热元件。 滑动触点通过感测元件连接到第一电极,第二电极和加热器元件,从而桥接并在每个之间提供导电路径。 弹簧元件由滑动接触件保持紧张并且施加平行于衬底长度的力。 在检测到激活条件时,感测元件释放滑动接触并且由弹簧元件施加的力将滑动接触件移动到衬底上的另一位置,在该位置处滑动接触不再在第一电极,第二电极 ,和加热元件。

    Surface mount multi-layer electrical circuit protection device with active element between PPTC layers
    4.
    发明授权
    Surface mount multi-layer electrical circuit protection device with active element between PPTC layers 有权
    表面贴装多层电路保护装置,在PPTC层之间具有有源元件

    公开(公告)号:US08183504B2

    公开(公告)日:2012-05-22

    申请号:US11392974

    申请日:2006-03-27

    Abstract: A surface-mountable electrical circuit protection device includes layers defining a first PPTC resistive element, a second PPTC resistive element, and at least one heat-generating electrical component such as a planar zener diode chip positioned between, and in thermal contact with, the first and second PPTC elements, such that an electrical current above a threshold level passing through the component causes the component to heat, the heat being transferred to the PPTC resistive elements and tripping at least one, and preferably both of the first or second PPTC elements to a high resistance state. A series of edge-formed terminal electrodes enable surface-mount connection of the first and second PPTC elements and the electrical component to an electrical circuit substrate, such as a printed circuit board. A method for making the device is also disclosed.

    Abstract translation: 一种可表面安装的电路保护装置包括限定第一PPTC电阻元件,第二PPTC电阻元件的层,以及至少一个发热电气部件,例如平面齐纳二极管芯片,其定位在第一和第二PPTC电阻元件之间并与第一PPTC电阻元件热接触 和第二PPTC元件,使得高于通过部件的阈值电平的电流导致部件加热,热被传递到PPTC电阻元件并且将至少一个,优选两个第一或第二PPTC元件跳到 高电阻状态。 一系列边缘形成的端子电极使得第一和第二PPTC元件和电气元件的表面安装连接到诸如印刷电路板的电路基板。 还公开了一种制造该装置的方法。

    Process for manufacturing a composite polymeric circuit protection device
    5.
    发明授权
    Process for manufacturing a composite polymeric circuit protection device 有权
    制造复合聚合物电路保护装置的方法

    公开(公告)号:US06640420B1

    公开(公告)日:2003-11-04

    申请号:US09395869

    申请日:1999-09-14

    Abstract: A process for manufacturing a composite polymeric circuit protection device in which a polymeric assembly is provided and is then subdivided into individual devices. The assembly is made by providing first and second laminates, each of which includes a laminar polymer element having at least one conductive surface, providing a pattern on at least one of the conductive surfaces on one laminate, securing the laminates in a stack in a desired configuration, at least one conductive surface of at least one of the laminates forming an external conductive surface of the stack, and making a plurality of electrical connections between a conductive surface of the first laminate and a conductive surface of the second laminate. The laminar polymer elements may be PTC conductive polymer compositions, so that the individual devices made by the process exhibit PTC behavior.

    Abstract translation: 一种用于制造复合聚合物电路保护装置的方法,其中提供聚合物组件,然后再分成各个装置。 该组件通过提供第一和第二层压体制成,每个层压体包括具有至少一个导电表面的层状聚合物元件,在一个层压板上的至少一个导电表面上提供图案,将层叠体固定在所需的叠层中 至少一个所述层压体的至少一个导电表面形成所述堆叠的外部导电表面,并且在所述第一层压体的导电表面和所述第二层压体的导电表面之间形成多个电连接。 层状聚合物元件可以是PTC导电聚合物组合物,使得由该方法制备的各个装置表现出PTC行为。

    Reflowable Circuit Protection Device
    6.
    发明申请
    Reflowable Circuit Protection Device 有权
    可回流电路保护装置

    公开(公告)号:US20130200984A1

    公开(公告)日:2013-08-08

    申请号:US13567784

    申请日:2012-08-06

    CPC classification number: H01H37/761 H01H2037/768

    Abstract: A circuit protection device includes a substrate with first and second electrodes connected to the circuit to be protected. The circuit protection device also includes a heater element. A sensing element facilitates an electrical connection between the first and second electrodes. A flux material is provided around the sensing element. In a preferred embodiment, the flux contains a first component that is a polar material and a second component that is a non-polar material. A spring element exerts a force on the sensing element. The sensing element resists the force applied by the spring element. Upon detection of an activation, or fault, condition, the sensing element loses resilience and no longer resists the force exerted by the spring element, resulting in the spring element severing the electrical connection between the first and second electrodes. The flux allows the spring element to sever with electrical connection without dragging the sensing element.

    Abstract translation: 电路保护装置包括具有连接到待保护电路的第一和第二电极的基板。 电路保护装置还包括加热元件。 感测元件有利于第一和第二电极之间的电连接。 传感元件周围设置助焊剂材料。 在优选实施例中,焊剂含有作为极性材料的第一组分和作为非极性材料的第二组分。 弹簧元件在感测元件上施加力。 感测元件抵抗由弹簧元件施加的力。 在检测到激活或故障状态时,感测元件失去弹性并且不再抵抗由弹簧元件施加的力,导致弹簧元件切断第一和第二电极之间的电连接。 助焊剂允许弹簧元件用电连接而切断,而不会拖动传感元件。

    Three-Function Reflowable Circuit Protection Device
    7.
    发明申请
    Three-Function Reflowable Circuit Protection Device 有权
    三功能可回流电路保护装置

    公开(公告)号:US20120194317A1

    公开(公告)日:2012-08-02

    申请号:US13019976

    申请日:2011-02-02

    Abstract: A circuit protection device includes a substrate with first and second electrodes connected to the circuit to be protected. The circuit protection device also includes a heater element between the first and second electrodes. A sliding contact is connected by a sensing element to the first electrode, second electrode, and heater element, thereby bridging and providing a conductive path between each. A spring element is held in tension by, and exerts a force parallel to a length of the substrate against, the sliding contact. Upon detection of an activation condition, the sensing element releases the sliding contact and the force exerted by the spring element moves the sliding contact to another location on the substrate at which the sliding contact no longer provides a conductive path between the first electrode, second electrode, and heater element.

    Abstract translation: 电路保护装置包括具有连接到待保护电路的第一和第二电极的基板。 电路保护装置还包括在第一和第二电极之间的加热元件。 滑动触点通过感测元件连接到第一电极,第二电极和加热器元件,从而桥接并在每个之间提供导电路径。 弹簧元件由滑动接触件保持紧张并且施加平行于衬底长度的力。 在检测到激活条件时,感测元件释放滑动接触并且由弹簧元件施加的力将滑动接触件移动到衬底上的另一位置,在该位置处滑动接触不再在第一电极,第二电极 ,和加热元件。

    Three-Function Reflowable Circuit Protection Device
    10.
    发明申请
    Three-Function Reflowable Circuit Protection Device 有权
    三功能可回流电路保护装置

    公开(公告)号:US20120194315A1

    公开(公告)日:2012-08-02

    申请号:US13019983

    申请日:2011-02-02

    CPC classification number: H01H37/761 H01H2037/046 H01H2037/762

    Abstract: A circuit protection device is configured to protect circuit elements under any one of the following three activation conditions: an over current condition, an over temperature condition, and an activation control current received by a heater element. The circuit element includes first and second electrodes, and the heater element. A sliding contact is connected by a sensing element to the first electrode, second electrode, and heater element, thereby bridging and providing a conductive path between each. A spring element is held in tension by, and exerts a force against, the sliding contact. Upon detection of any one of three activation conditions, the sensing element releases the sliding contact and the force exerted by the spring element moves the sliding contact to another location on the substrate at which the sliding contact no longer provides a conductive path between the first electrode, second electrode, and heater element.

    Abstract translation: 电路保护装置被配置为在以下三种激活条件中的任何一种下保护电路元件:过电流状态,过温状态以及由加热元件接收的激活控制电流。 电路元件包括第一和第二电极以及加热元件。 滑动触点通过感测元件连接到第一电极,第二电极和加热器元件,从而桥接并在每个之间提供导电路径。 弹簧元件由滑动接触件保持张力并施加力。 当检测到三个激活条件中的任何一个时,感测元件释放滑动接触并且由弹簧元件施加的力将滑动接触件移动到基​​板上的另一位置,在该位置滑动接触不再在第一电极之间提供导电路径 ,第二电极和加热元件。

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