John Deere Electric Powertrain LLC

Kreisel Electric Gmbh & Co Kg

Philipp Kreisel

Helmut Kastler

Gerhard Waldschütz

Peter Dobusch

Johann Kreisel, Jr

Markus Kreisel

Lukas Haider

Ignaz Weglehner-Pilgerstorfer

Christian Leitner

Manuel Riegler

A device for breaking the electrical connection to a battery cell () in the event of outgassing has the cell pole () on the outgassing valve side connected to an electrical contact point () at a connection point () via a connecting lead () which forms a fuse. The device, requiring few components and having a compact design, enables a reliable electrical and thermal protection of neighboring cells of an outgassing battery cell against overloading and prevents the spread of a thermal runaway. The device provides a spacer () between the connection point () and the contact point () that electrically isolates the connection point () from the contact point () in the event of outgassing and that retains the cell pole ().

Device for breaking the electrical connection to a battery cell in the event of outgassing

The invention relates to a battery module having with a main body () for accommodating individual battery cells () arranged in parallel with respect to a joining axis (), which main body forms a flow channel () extending transversely to the joining axis () for a temperature-control fluid flowing directly against the cell shells of the battery cells (). In order not only to reduce the risk of thermal damage to individual battery cells () during peak loads, but also to prevent the propagation of a chain reaction in the event of a thermal runaway fault, it is proposed that, for each battery cell (), a burst protection sleeve (), which surrounds the battery cell () circumferentially with a clearance by forming an air gap (), is mounted upstream and downstream of the flow channel () in the direction of the joining axis (), wherein the flow channel () extends over a height of 28-60% of the battery cell () and each burst protection sleeve () extends separately over a height of 20-36% of the battery cell ().

Battery module

A temperature control device for individual battery cells () assembled to form a module (), having a base body () which, for the purpose of circumferentially enclosing the battery cells (), comprises two opposing sealing elements () having passage openings () located opposite one another in pairs with respect to a respective joining axis, and which base body () forms a flow channel extending transversely to the joining axes for a temperature control fluid is described. In order to design a temperature control device of the type described above in such a way that, with less manufacturing effort, an increased tightness of the device is achieved at the same time, even at higher flow rates of the temperature control fluid, it is proposed that the sealing elements () are two moulded parts which are identical to one another and which are aligned point-symmetrically with respect to one another and connected to one another and which sealing elements () form via a respective bearing surface () the base body (), wherein a receiving groove () having a seal compensation region () adjoins the bearing surface () on the inside of the base body ().

Temperature-control device for individual battery cells assembled to form a module

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Freistadt, Austria

Philipp Kreisel