US 12,139,006 B2
Drive device with self-controlled cooling
Achim Henkel, Stuttgart (DE); and Manuel Warwel, Tamm (DE)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/801,329
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Feb. 17, 2021, PCT No. PCT/EP2021/053843
§ 371(c)(1), (2) Date Aug. 22, 2022,
PCT Pub. No. WO2021/165294, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10 2020 202 203.8 (DE), filed on Feb. 20, 2020.
Prior Publication US 2023/0083635 A1, Mar. 16, 2023
Int. Cl. B60K 11/02 (2006.01); B60K 1/00 (2006.01)
CPC B60K 11/02 (2013.01) [B60K 2001/001 (2013.01); B60K 2001/006 (2013.01); B60Y 2200/91 (2013.01); B60Y 2306/05 (2013.01); B60Y 2400/61 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A drive device (1) for an electric vehicle, the drive device comprising:
at least one electric motor (2),
at least one drive inverter (4) for actuating the electric motor (2),
at least one cooling unit (12) with at least one coolant pump (18), a cooler (14), at least one pump inverter (16) and with at least one heat exchanger (20), wherein the heat exchanger (20) is connected in a fluid-conducting fashion to the coolant pump (18) and the cooler (14) via a coolant circuit (22),
wherein at least one pump inverter (16) is integrated into the drive inverter (4) or arranged adjacent to the drive inverter (4), wherein the coolant pump (18) is configured to be actuated by the pump inverter (16).