Device for air-conditioning the passenger compartment and for cooling the drive system of electric vehicles

US5483807A · kind A · utility

Assignee

• Mercedes-Benz Group AG · DE

Inventors

• Guenter Abersfelder · Sindelfingen, DE
• Helmut Grantz · Sindelfingen, DE
• Wolfgang Odebrecht · Sindelfingen, DE

Key dates

• Filing date: Aug 19, 1994
• Grant date: Jan 16, 1996
• Expiry date: Aug 19, 2014

Classification

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

Abstract

A device for air-conditioning the passenger compartment and for cooling the drive system of electric vehicles includes an air-guide duct connected on the inlet and outlet sides to the passenger compartment and having heat exchangers disposed one behind the other therein in the air-flow direction. One of the heat exchangers, which, together with a circulating pump and a cold store, is incorporated within a circuit of a cold-transporting medium. The circuit is run via the evaporator of a refrigeration unit. The other heat exchanger, together with a circulating pump and a heat store, is incorporated within a circuit of a heat-transporting medium. The circuit is run via the drive system of the electric vehicle for vehicle-cooling purposes. With the aim of reducing the weight of the device without altering the storage capacity of the cold and heat stores, these are formed by a single energy store, which, by at least one switchover valve, can be switched alternately into the cold-transporting-medium or heat-transporting-medium circuit. As the cold- and heat-transporting medium, the same liquid transmission medium is used.