Method for driving micro-hybrid system for vehicle and energy storage unit, and hybrid system for implementing the same
First Claim
1. A method for driving a micro-hybrid system with braking recovery for a vehicle, said micro-hybrid system (1) including an electric energy storage unit (12) and an electronic control unit (14), said electric energy storage unit (12) including a plurality of elementary cells (C1 to C10) mounted in series, the method comprising the steps of:
- reading elementary electric voltages (V) of said elementary cells (C1 to C10); and
deriving a state information on a state of the electric energy storage unit (12) from said read elementary voltages (V);
said state information including state of health data comprising the difference in voltage DeltaV=Vmax−
Vmin between a maximum elementary voltage (Vmax) defined by a voltage of the elementary cell which is the most charged (C2) and a minimum elementary voltage (Vmin) defined by a voltage of the elementary cell which is the least charged (C9) of said electric energy storage unit (12);
said state of health data (DeltaV) being representative of the capacity of the electric energy storage unit (12) to fulfil its function in said micro-hybrid system (1);
the method further comprising the step of defining an optimal driving of said micro-hybrid system (1) by taking into account, in said electronic control unit (14), said state information including said state of health data (DeltaV).
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Abstract
A micro-hybrid system (1) including an electric energy storage unit (12) and an electronic control unit (14). The storage unit includes a plurality of elementary cells mounted in series. A method includes the steps of: reading the elementary electric voltages of the elementary cells; deriving information on the state of the storage unit from the read voltages; and taking into account in the control unit the state information for defining an optimal driving of the micro-hybrid system. An electric energy storage unit and a micro-hybrid system with braking recovery is also disclosed.
14 Citations
16 Claims
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1. A method for driving a micro-hybrid system with braking recovery for a vehicle, said micro-hybrid system (1) including an electric energy storage unit (12) and an electronic control unit (14), said electric energy storage unit (12) including a plurality of elementary cells (C1 to C10) mounted in series, the method comprising the steps of:
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reading elementary electric voltages (V) of said elementary cells (C1 to C10); and deriving a state information on a state of the electric energy storage unit (12) from said read elementary voltages (V); said state information including state of health data comprising the difference in voltage DeltaV=Vmax−
Vmin between a maximum elementary voltage (Vmax) defined by a voltage of the elementary cell which is the most charged (C2) and a minimum elementary voltage (Vmin) defined by a voltage of the elementary cell which is the least charged (C9) of said electric energy storage unit (12);said state of health data (DeltaV) being representative of the capacity of the electric energy storage unit (12) to fulfil its function in said micro-hybrid system (1); the method further comprising the step of defining an optimal driving of said micro-hybrid system (1) by taking into account, in said electronic control unit (14), said state information including said state of health data (DeltaV). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electric energy storage unit including a plurality of super condenser elements (C1 to C10) forming elementary cells mounted in series, and electronic means (120) comprising additional means (1201) for implementing a method for driving a micro-hybrid system with braking recovery for a vehicle, said micro-hybrid system including said electric energy storage unit and an electronic control unit, the method comprising the steps of:
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reading elementary electric voltages (V) of said elementary cells (C1 to C10); and deriving a state information on a state of the electric energy storage unit from said read elementary voltages (V); said state information including state of health data comprising the difference in voltage DeltaV=Vmax−
Vmin between a maximum elementary voltage (Vmax) defined by a voltage of the elementary cell which is the most charged and a minimum elementary voltage (Vmin) defined by a voltage of the elementary cell which is the least charged of said electric energy storage unit;said state of health data (DeltaV) being representative of the capacity of the electric energy storage unit to fulfil its function in said micro-hybrid system; the method further comprising the step of defining an optimal driving of said micro-hybrid system by taking into account, in said electronic control unit, said state information including said state of health data (DeltaV). - View Dependent Claims (10, 11, 12, 13)
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14. A micro-hybrid system with braking recovery for a vehicle, said micro-hybrid system including an electric energy storage unit and an electronic control unit, said electric energy storage unit including a plurality of elementary cells (C1 to C10) mounted in series, said micro-hybrid system further including means for implementing a method for driving said micro-hybrid system comprising the steps of:
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reading elementary electric voltages (V) of said elementary cells (C1 to C10); and deriving a state information on a state of the electric energy storage unit from said read elementary voltages (V); said state information including state of health data comprising the difference in voltage DeltaV=Vmax−
Vmin between a maximum elementary voltage (Vmax) defined by a voltage of the elementary cell which is the most charged and a minimum elementary voltage (Vmin) defined by a voltage of the elementary cell which is the least charged of said electric energy storage unit;said state of health data (DeltaV) being representative of the capacity of the electric energy storage unit to fulfil its function in said micro-hybrid system; the method further comprising the step of defining an optimal driving of said micro-hybrid system by taking into account, in said electronic control unit, said state information including said state of health data (DeltaV). - View Dependent Claims (15, 16)
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Specification