Dual energy storage system for micro hybrid vehicles
First Claim
Patent Images
1. An energy storage system of a vehicle, comprising:
- a first energy storage device configured to couple to one or more electrical accessories of the vehicle;
a second energy storage device configured to couple to one or more of a starter unit, generator, or motor of the vehicle;
a voltage and current regulator device coupled to the first energy storage device and the second energy storage device configured to transfer electrical energy bidirectionally between the first energy storage device and second energy storage device;
a control unit for controlling the voltage and current regulator device, wherein the control unit is configured to receive a signal based on an operation mode of the vehicle from a vehicle control unit; and
a plurality of sensing devices for sensing current input signals and voltage input signals to the first energy storage device, the second energy storage device, or both;
wherein the control unit is configured to recharge the second energy storage device and power the one or more electrical accessories of the vehicle with the first energy storage device when;
the operation mode is in a charging mode; and
a state of charge of the second energy storage device is less than a first predetermined threshold value;
wherein the control unit is configured to recharge the first energy storage device and the second energy storage device and power the one or more electrical accessories with the generator when;
the operation mode is in the charging mode;
the state of charge of the second energy storage device is greater than or equal to the first predetermined threshold value; and
the state of charge of the second energy storage device is greater than a second predetermined threshold value;
wherein the control unit is configured to connect the first energy storage device to the second energy storage device, charge the first energy storage device with the second energy storage device, and power the one or more accessories with the second energy storage device when;
the operation mode is in a key-off mode; and
the state of charge of the second energy storage device is greater than a third predetermined threshold value;
wherein the control unit is configured to disconnect the first energy storage device from the second energy storage device when;
the operation mode is in the key-off mode;
the state of charge of the second energy storage device is less than or equal to the third predetermined threshold value; and
the state of charge of the second energy storage device is less than a fourth predetermined threshold value.
4 Assignments
0 Petitions
Accused Products
Abstract
An energy storage system of a vehicle includes a first energy storage device and a second energy storage device, a voltage and current regulator device coupled to the first and second energy storage devices, a control unit for controlling the regulator device, and a plurality of sensing devices for sensing current input signals and voltage input signals to at least one of the first and second energy storage devices.
25 Citations
18 Claims
-
1. An energy storage system of a vehicle, comprising:
-
a first energy storage device configured to couple to one or more electrical accessories of the vehicle; a second energy storage device configured to couple to one or more of a starter unit, generator, or motor of the vehicle; a voltage and current regulator device coupled to the first energy storage device and the second energy storage device configured to transfer electrical energy bidirectionally between the first energy storage device and second energy storage device; a control unit for controlling the voltage and current regulator device, wherein the control unit is configured to receive a signal based on an operation mode of the vehicle from a vehicle control unit; and a plurality of sensing devices for sensing current input signals and voltage input signals to the first energy storage device, the second energy storage device, or both; wherein the control unit is configured to recharge the second energy storage device and power the one or more electrical accessories of the vehicle with the first energy storage device when; the operation mode is in a charging mode; and a state of charge of the second energy storage device is less than a first predetermined threshold value; wherein the control unit is configured to recharge the first energy storage device and the second energy storage device and power the one or more electrical accessories with the generator when; the operation mode is in the charging mode; the state of charge of the second energy storage device is greater than or equal to the first predetermined threshold value; and the state of charge of the second energy storage device is greater than a second predetermined threshold value; wherein the control unit is configured to connect the first energy storage device to the second energy storage device, charge the first energy storage device with the second energy storage device, and power the one or more accessories with the second energy storage device when; the operation mode is in a key-off mode; and the state of charge of the second energy storage device is greater than a third predetermined threshold value; wherein the control unit is configured to disconnect the first energy storage device from the second energy storage device when; the operation mode is in the key-off mode; the state of charge of the second energy storage device is less than or equal to the third predetermined threshold value; and the state of charge of the second energy storage device is less than a fourth predetermined threshold value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An energy storage system of a vehicle, comprising:
-
a first energy storage device coupled to one or more electrical accessories of the vehicle; a second energy storage device coupled to an electrical generator; a voltage and current regulator device configured to couple the first energy storage device to the second energy storage device, wherein the voltage and current regulator device is configured to transfer electrical energy from the first energy storage device to the second energy storage device; a control unit for controlling the voltage and current regulator device, wherein the control unit is configured to receive a signal based on an operation mode of the vehicle from a vehicle control unit; and a plurality of sensing devices for sensing current input signals and voltage input signals to the first energy storage device, the second energy storage device, or both; wherein the control unit is configured to charge the first energy storage device with the second energy storage device and power the one or more electrical accessories with the second energy storage device when; the operation mode is in a discharge mode; and a state of charge of the second energy storage device is greater than a first predetermined threshold value; wherein the control unit is configured to disconnect the first energy storage device and the second energy storage device when; the operation mode is in a discharge mode; the state of charge of the second energy storage device is less than or equal to the first predetermined threshold value; and the state of charge of the second energy storage device is less than a second predetermined threshold value; wherein the control unit is configured to connect the first energy storage device to the second energy storage device, charge the first energy storage device with the second energy storage device, and power the one or more accessories with the second energy storage device when; the operation mode is in a key-off mode; and the state of charge of the second energy storage device is greater than the first predetermined threshold value; wherein the control unit is configured to disconnect the first energy storage device and the second energy storage device when; the operation mode is in the key-off mode; the state of charge of the second energy storage device is less than or equal to the first predetermined threshold value; and when the state of charge is less than the second predetermined threshold value. - View Dependent Claims (16, 17, 18)
-
Specification