Thermal system for an electric or hybrid vehicle, electric or hybrid vehicle, method for operating a thermal system

US11318813B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Christian ALLGAEUER · Munich, DE
• Oliver Horn · Munich, DE
• Markus Moser · Oberschleißheim, DE

Key dates

• Filing date: Mar 19, 2020
• Grant date: May 3, 2022
• Expiry date: Aug 14, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A thermal system for a vehicle having a comprehensive cooling circuit, a refrigeration circuit, a cooling circuit, a heating circuit, and a plurality of switched states is disclosed. The cooling circuit is connected with a heat source of the vehicle. The cooling circuit has a high-voltage accumulator (HVA) circuit to which a high-voltage accumulator for supplying power to an electric drivetrain of the vehicle is connected. An ambient cooler is connected to the cooling circuit downstream of the heat source. A chiller for transferring heat from the HVA circuit into the refrigeration circuit is also connected to the refrigeration circuit. A first switched state, in which the HVA circuit downstream and upstream of the heat source is connected to the cooling circuit, can be set such that an extended HVA circuit, in which the high-voltage accumulator and the heat source are connected in series is configured.