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    VERFAHREN UND SCHALTUNGSANORDNUNG ZUM SPEISEN EINER SERIENSCHALTUNG VON N LED-EINHEITEN
    3.
    发明公开
    VERFAHREN UND SCHALTUNGSANORDNUNG ZUM SPEISEN EINER SERIENSCHALTUNG VON N LED-EINHEITEN 审中-公开

    公开(公告)号：EP3198991A1

    公开(公告)日：2017-08-02

    申请号：EP15756823.9

    申请日：2015-08-11

    申请人： ZKW Group GmbH

    发明人： BAKER, Julian ,  BIESENBERGER, Martin ,  MIEDLER, Stefan

    IPC分类号： H05B33/08

    CPC分类号： B60Q1/0408 ,  H05B33/08 ,  H05B33/083

    摘要： The invention relates to a method and to a circuit arrangement for feeding n LED units (LED1 , ... LED5) of a lamp unit of a motor vehicle by means of a controlled current source (5) from a voltage source (2) having fluctuating operating voltage (U
    B ), in which the connecting of the LED units (LED1 , ... LED5) in the event of the operating voltage (UB) falling is carried out whilst taking into account a stored weighting with regard to the priority assigned to the individual LED units, in particular each k LED units (LED1, ..., LED5) of a series circuit are short-circuited, wherein at the same time (n-k) LED units remain energized. At the same time, a control unit (3) for driving the current source is assigned a storage unit (7) for storing information about weightings relating to the priority of specific LED units, a switching matrix (4', S
    1 , ..., S
    4 ), in particular a switch arrangement of n controlled switches (S
    1 , ..., S
    4 ) each bridging the LED units (LED1, ..., LED4, LED5) is provided, and the control unit (3) is configured to compare the operating voltage and/or the current (I
    S ) from the current source with predefined threshold values and to carry out the connection of the LED units on the basis of this comparison and the weighting.

    摘要翻译： 本发明涉及一种通过来自电压源（2）的受控电流源（5）给机动车灯单元的n个LED单元（LED1，...，LED5）供电的方法和电路装置， 波动的工作电压（UB），其中在工作电压（UB）下降的情况下连接LED单元（LED1，... LED5）同时考虑存储的关于所分配的优先级的权重 对于各个LED单元，特别是串联电路中的每个k个LED单元（LED1，...，LED5）短路，其中同时（nk）个LED单元保持通电。 同时，用于驱动电流源的控制单元（3）被分配用于存储关于与特定LED单元的优先级相关的权重的信息的存储单元（7），开关矩阵（4'，S1，... ，S4），特别是提供n个受控开关（S1，...，S4）的开关装置，每个开关装置桥接LED单元（LED1，...，LED4，LED5），并且控制单元（3）被配置 以将来自电流源的工作电压和/或电流（IS）与预定义的阈值进行比较，并基于该比较和加权来执行LED单元的连接。