US 11,654,872 B2
Electric brake system for a vehicle
Anders Nilsson, Landskrona (SE); Anders Lindqvist, Landskrona (SE); and Peter Nilsson, Oerkelljunga (SE)
Filed by Haldex Brake Products Aktiebolag, Landskrona (SE)
Filed on Jun. 20, 2019, as Appl. No. 16/447,281.
Application 16/447,281 is a continuation of application No. PCT/EP2017/081039, filed on Nov. 30, 2017.
Claims priority of application No. 16206505 (EP), filed on Dec. 22, 2016.
Prior Publication US 2019/0299944 A1, Oct. 3, 2019
Int. Cl. B60T 7/04 (2006.01); B60W 20/14 (2016.01); B60W 10/192 (2012.01); B60W 30/18 (2012.01); B60T 13/74 (2006.01); B60T 13/66 (2006.01); B60T 8/88 (2006.01); H02J 7/14 (2006.01)
CPC B60T 7/042 (2013.01) [B60T 8/885 (2013.01); B60T 13/66 (2013.01); B60T 13/74 (2013.01); B60T 13/741 (2013.01); B60W 10/192 (2013.01); B60W 20/14 (2016.01); B60W 30/18127 (2013.01); H02J 7/14 (2013.01); B60T 2270/413 (2013.01); B60T 2270/414 (2013.01); B60T 2270/608 (2013.01)] 22 Claims
OG exemplary drawing
1. An electric service brake system (1) for a vehicle comprising
a) at least one electric service brake device (2) wherein a service brake force is generated by an electric service brake actuator (3) and
b) a capacitor-based power source (9) which
ba) is formed by or comprises a capacitor and
bb) supplies electric power to the service electric brake actuator (3),
c) a recharging power source (32), the recharging power source, the capacitor-based power source and the electric service brake device being connected in series in the aforementioned order during normal operation,
d) at least one control device comprising control logic for controlling a flow of electric energy from the recharging power source (32) to the capacitor-based power source (9),
e) a brake actuation mode wherein the electric service brake device (2) is controlled such that a desired brake force is generated, an increasing brake force is generated and/or a previously generated brake force is upheld,
f) wherein the brake actuation mode comprises
fa) a holding sub-mode wherein a locking, fixing or holding device is actuated which keeps a previously generated service brake force of the electric service brake device (2) constant and wherein the service brake device (2) is energized on a reduced energization level and
fb) a brake force control sub-mode wherein the service brake force is controlled on the basis of an actual service brake force demand.