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US 6,854,813 B2Granted
Electrically driven brake device and control apparatus thereof
AssigneeHitachi, Ltd.
InventorsAtsushi Yokoyama, Takaomi Nishigaito, Yuzo Kadomukai, Masanori Ichinose, Kenichiro Matsubara, Nobuyuki Ueki, Toshio Manaka
Life of this patent
Estimating the term…
Abstract
An electrically driven brake device includes a plurality of brake actuators for generating braking force when driven electrically, a power supply source for storing electric energy and supplying power to the brake actuators, a power source line for connecting the power supply source and the brake actuators, and a power breaker at a position of the power source line at which the brake actuators can be insulated and separated into at least two systems.
Claims20
An electrically driven brake device comprising:
- a plurality of brake actuators to generate braking force when driven electrically;
- a power supply source to store electric energy and supply electric power to the brake actuators;
- power source lines to connect the power supply source and the brake actuators;
- a power breaker provided to selectably connect the power source lines, and to selectably disconnect the power source lines during times when the power supply source is unreliable, so as to insulate and separate the plurality of brake actuators into at least two systems;
- an auxiliary power supply source to store electric energy and supply electric power to brake actuators of one system of the at least two systems during the times when the power supply source is unreliable, wherein the power supply source and the auxiliary power supply source provide power at mutually different voltage levels;
- and
- a converter to convert a voltage level of the auxiliary power supply source to substantially a voltage level of the power supply source, and to apply a thus converted voltage level to the one system.
4 more elements
An electrically driven brake device comprising:
- a plurality of brake actuators to generate braking force when driven electrically;
- a plurality of power supply sources to store electric energy and supply electric power to the brake actuators;
- a main power source line to connect the plurality of power supply sources;
- secondary power source line to connect the main power source line and the brake actuators;
- a power breaker provided to selectably disconnect the main power source line during times when a power provided on the main power source line is unreliable, so as to insulate and separate the plurality of brake actuators into at least two systems;
- an auxiliary power supply source to supply electric power to brake actuators of one system of the at least two systems during the times when the power provided on the main power source line is unreliable, wherein the power on the main source line and the auxiliary power supply source provide power at mutually different voltage levels;
- and
- a converter to convert a voltage level of the auxiliary power supply source to substantially a normal voltage level of the main power source line, and to apply a thus converted voltage level to the one system.
5 more elements
An electrically driven brake device comprising:
- a plurality of brake actuators to generate braking force when driven electrically;
- a power supply source means for storing electric energy and supplying electric power to the brake actuators;
- power source line means for connecting the power supply source means and the brake actuators;
- a power breaker means for selectably connecting the power source line means, and for selectably disconnecting ones of power source lines of the power source line means during times when the power supply source is unreliable, so as to insulate and separate the plurality of brake actuators into at least two systems;
- an auxiliary power supply source means for storing electric energy and supplying electric power to brake actuators of one system of the at least two systems during the times when the power supply source means is unreliable, wherein the power supply source means and the auxiliary power supply source means provide power at mutually different voltage levels;
- and
- a converter means for converting a voltage level of the auxiliary power supply source means to substantially a voltage level of the power supply source means, and to apply a thus converted voltage level to the one system.
4 more elements
A vehicle comprising:
- at least one of a plurality of wheels;
- and
- an electrically driven brake device including:
- a plurality of brake actuators to generate braking force when driven electrically;
- a power supply source to store electric enemy and supply electric power to the brake actuators;
- power source lines to connect the power supply source and the brake actuators;
- a power breaker provided to selectably connect the power source lines, and to selectably disconnect the power source lines during times when the power supply source is unreliable, so as to insulate and separate the plurality of brake actuators into at least two systems;
- an auxiliary power supply source to store electric energy and supply electric power to brake actuators of one system of the at least two systems during the times when the power supply source is unreliable, wherein the power supply source and the auxiliary power supply source provide power at mutually different voltage levels;
- and
- a converter to convert a voltage level of the auxiliary power supply source to substantially a voltage level of the power supply source, and to apply a thus converted voltage level to the one system.
7 more elements
Dependencies are inferred from the claim text.