Temic Automotive Electric Motors Gmbh

Conti Temic Microelectronic Gmbh

Axel Rudorff

Peter Birke

Michael Keller

Knut Welke

Swen Wiethoff

Manfred Malik

Nevzat Güner

Sönke Gürtler

Reinhard Kassen

Nevzat Guener

Rogelio Villarroel

Martin Voss

Reinhard Ganghofner

The invention relates to a battery holder () for galvanic cells, in which a first honeycomb structure (to), comprising a lower and an upper basic cooling body () and at least one intermediate cooling body (), is provided, wherein in each case, galvanic cells can be arranged on a cell level (to) in each case between one of the basic cooling bodies () and one of the intermediate cooling bodies () and/or between two of the intermediate cooling bodies (), wherein the galvanic cells of one of the cell levels (to) are displaced to the side to the galvanic cells of at least one adjacent cell level (to) by half the width of a galvanic cell, and wherein the intermediate cooling body () and the basic cooling bodies () are formed in an area between the galvanic cells according to the outer contours of the galvanic cells, and wherein each of the cooling bodies () comprises at least on one end which lies in an axial direction to the galvanic cells a cooling chamber (), through which a cooling medium (K) can flow, into which the cooling medium (K) can flow from at least one cooling chamber (K) of at least one adjacent cooling body () and/or from which the cooling medium (K) can flow out into at least one cooling chamber () of at least one of the adjacent cooling bodies (), wherein at least one cooling chamber () of at least one of the cooling bodies () comprises a cooling agent inflow () and/or a cooling agent outflow ().

Method and device for determining the ageing of a battery

An energy storage unit has several storage elements (') which are switched in series and a charge redistribution circuit (&#x2032;). The latter is installed in such a manner that the voltage of the storage element (U, U&#x2032;) is measured and compared with a voltage threshold value (U, U, U&#x2032;, U&#x2032;). When the threshold value is exceeded by a storage element, it removes charge from said storage element, thus reducing its voltage. According to one aspect, a storage-related temperature determination is conducted, and the threshold value is set variably in dependence on the determined temperature (T, T) in such a manner that it is reduced as the temperature increases. According to a further aspect, the threshold value is set variably in dependence on the current vehicle operating state, in such a manner that it is set higher for relatively brief periods of time when the storage or removal requirement is relatively high. According to an additional further aspect, the threshold value is set lower for storage elements with a relatively advanced age than for those with a less advanced age.

Energy storage unit

A heat exchanger is connected to at least one energy storage cell of an energy storage device in a heat-conducting manner. The energy storage device is enclosed by a housing. The energy storage cells have at least one safety pressure release valve or burst opening for the release of gases to the outer environment. The heat exchanger at least partially forms at least one side of the housing and has holes that connect the safety pressure releases of the energy storage cells with the environment.

Heat exchanger for an energy storage device

Growing community of inventors

Berlin, Germany

Axel Rudorff