POWER SUPPLY CIRCUIT FOR SELECTIVELY SUPPLYING POWER TO A VEHICLE A CCESSORY
    1.
    发明申请
    POWER SUPPLY CIRCUIT FOR SELECTIVELY SUPPLYING POWER TO A VEHICLE A CCESSORY 审中-公开
    用于选择性地向车辆提供电力的电源电路

    公开(公告)号:WO2007092337A2

    公开(公告)日:2007-08-16

    申请号:PCT/US2007/002940

    申请日:2007-02-02

    Abstract: According to one embodiment of the present invention, a power supply circuit (10) is provided for selectively supplying power to a vehicle accessory (20). The power supply circuit may be comprised of a switch (30) coupled to a power line from the vehicle battery (15) and to a power input of the accessory (20), and a control circuit (50) coupled to the switch (30). The control circuit (50) may monitor the battery voltage and selectively supply power from the battery (15) to the accessory (20) in response to the battery voltage. The control circuit (50) may supply power from the battery (15) to the accessory (20) when the battery voltage changes at least a predetermined amount over a time period. The control circuit (50) may comprise a microprocessor that adaptively learns signatures in the battery voltage occurring when the engine is running in order to provide power from the battery (15) to the accessory (20) as if the power were supplied from the ignition.

    Abstract translation: 根据本发明的一个实施例,提供一种用于选择性地向车辆附件(20)供电的电源电路(10)。 电源电路可以包括耦合到来自车辆电池(15)的电力线和附件(20)的电力输入的开关(30),以及耦合到开关(30)的控制电路(50) )。 控制电路(50)可以监视电池电压并响应于电池电压选择性地将电力(12)从电池(15)提供给附件(20)。 当电池电压在一段时间内改变至少预定量时,控制电路(50)可以从电池(15)向附件(20)供电。 控制电路(50)可以包括微处理器,其自动地学习当发动机运行时发生的电池电压中的签名,以便从电池(15)向附件(20)提供电力,就好像从点火 。

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