Power Storage Device For Hybrid Or Electric Motor Vehicles, And Associated Electric Power Management Method
First Claim
1. An electrical energy storage device for hybrid or electric type vehicles, comprising:
- a high voltage supply bus intended to be connected to an electrical drive system and/or to an on-board electrical network,a first storage element for electrical energy connected to said supply bus,a second storage element connected to the high voltage bus through the intermediary of an electrical coupling element that adapts the voltage levels of the first storage element to the voltage levels of the second storage element and vice versa,the second storage element being connected to bus in parallel relative to the first storage element,one of the two storage elements comprising a battery with electrochemical cells, while the other storage element comprises a supercapacitor.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention essentially relates to an electric power storage device (1) for hybrid or electric motor vehicles, comprising: a high voltage power supply bus (2) to be connected to an electric traction system (7) and/or to an onboard electric power system, and a first electric power storage element (3) connected to said power supply bus (2). According to the invention, a second storage element (4) is connected to the bus (2) via an electric coupling member (5), said second storage element (4) being connected to the bus (2) in parallel relative to the first storage element (3). One of the two storage elements (3, 4) includes an electrochemical battery, while the other storage element (3, 4) includes an ultracapacitor.
-
Citations
11 Claims
-
1. An electrical energy storage device for hybrid or electric type vehicles, comprising:
-
a high voltage supply bus intended to be connected to an electrical drive system and/or to an on-board electrical network, a first storage element for electrical energy connected to said supply bus, a second storage element connected to the high voltage bus through the intermediary of an electrical coupling element that adapts the voltage levels of the first storage element to the voltage levels of the second storage element and vice versa, the second storage element being connected to bus in parallel relative to the first storage element, one of the two storage elements comprising a battery with electrochemical cells, while the other storage element comprises a supercapacitor. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A hybrid or electric type automotive vehicle equipped with an energy storage device;
- the energy storage system comprising
a high voltage supply bus intended to be connected to an electrical drive system and/or to an on-board electrical network, a first storage element for electrical energy connected to said supply bus, a second storage element connected to the high voltage bus through the intermediary of an electrical coupling element that adapts the voltage levels of the first storage element to the voltage levels of the second storage element and vice versa, the second storage element being connected to bus in parallel relative to the first storage element, one of the two storage elements comprising a battery with electrochemical cells, while the other storage element comprises a supercapacitor; the vehicle comprising; an on-board network connected to the high voltage bus through the intermediary of a second electrical coupling element, and an electric drive system connected to the high voltage bus through the intermediary of an alternating/direct converter. - View Dependent Claims (7)
- the energy storage system comprising
-
8. A method for managing electrical energy in a hybrid or electric vehicle, the vehicle comprising:
-
a high voltage supply bus intended to be connected to an electrical drive system and/or to an on-board electrical network, a first storage element for electrical energy connected to said supply bus, a second storage element connected to the high voltage bus through the intermediary of an electrical coupling element that adapts the voltage levels of the first storage element to the voltage levels of the second storage element and vice versa, the second storage element being connected to bus in parallel relative to the first storage element, one of the two storage elements comprising a battery with electrochemical cells, while the other storage element comprises a supercapacitor; an on-board network connected to the high voltage bus through the intermediary of a second electrical coupling element, and an electric drive system connected to the high voltage bus through the intermediary of an alternating/direct converter; wherein, when the vehicle is operated in a pure electrical drive phase, the method comprises the electrical drive system drawing energy from the terminals of supercapacitor to ensure the traction of the vehicle, while electrical energy is transferred from the battery to the supercapacitor through the intermediary of a coupling element in order to compensate the energy draw. - View Dependent Claims (9, 10, 11)
-
Specification