METHOD, SYSTEM AND CHARGER FOR CHARGING A BATTERY OF AN ELECTRIC VEHICLE
First Claim
1. Method for charging a battery of an electric vehicle according to a protocol which allows advance negotiations about charge power for a charge session, before charging starts, comprising:
- a) determining a priority for each port where an electric vehicle is connected;
b) assigning a maximum available power budget to a port with a first priority;
c) performing a charge session at the port with the first priority;
d) monitoring actual power delivered to the vehicle from the first priority port;
e1) adjusting an assigned power budget value of the first priority port depending on the actual power delivered to the vehicle;
f1) assigning a remaining portion of the power budget to a port with a next priority;
g1) if the power budget exceeds a first predetermined threshold value;
starting a charge session at the next port where the remaining portion of the power budget is assigned;
e2) again adjusting the assigned power budget value of the first priority port depending on the actual power delivered to the vehicle;
f2) assigning a remaining portion of the power budget to the port with the next priority;
g2) if the power budget exceeds a second predetermined threshold value;
restarting the charge session at the next port where the remaining portion of the power budget is assigned.
1 Assignment
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Accused Products
Abstract
The present invention relates to a method, a charge controller, a charger and charging system for charging a battery of an electric vehicle, which can include a) determining a priority for each port where an electric vehicle is connected, b) assigning a maximum available power budget to a port with first priority, c) performing a charge session at the port with the first priority, d) monitoring actual power delivered to the vehicle from the priority port, e) adjusting the power budget value of the priority port depending on the actual power delivered to the vehicle and f) assigning a remaining portion of the power budget to the port with the second highest priority, g) if the power budget exceeds a predetermined threshold value, starting or restarting a charge session at the port where the remaining portion of the power budget is assigned, and h) repeating steps e-h.
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Citations
18 Claims
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1. Method for charging a battery of an electric vehicle according to a protocol which allows advance negotiations about charge power for a charge session, before charging starts, comprising:
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a) determining a priority for each port where an electric vehicle is connected; b) assigning a maximum available power budget to a port with a first priority; c) performing a charge session at the port with the first priority; d) monitoring actual power delivered to the vehicle from the first priority port; e1) adjusting an assigned power budget value of the first priority port depending on the actual power delivered to the vehicle; f1) assigning a remaining portion of the power budget to a port with a next priority; g1) if the power budget exceeds a first predetermined threshold value; starting a charge session at the next port where the remaining portion of the power budget is assigned; e2) again adjusting the assigned power budget value of the first priority port depending on the actual power delivered to the vehicle; f2) assigning a remaining portion of the power budget to the port with the next priority; g2) if the power budget exceeds a second predetermined threshold value; restarting the charge session at the next port where the remaining portion of the power budget is assigned. - View Dependent Claims (2, 3, 7, 8, 10, 11, 13)
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4. A charge controller configured for charging a battery of an electric vehicle according to a protocol which allows advance negotiations about charge power for a charge session, before charging starts, comprising:
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a) determining a priority for each port where an electric vehicle is connected; b) assigning a maximum available power budget to a port with a first priority; c) applying a charge session at the port with the first priority; d) monitoring actual power delivered to the vehicle from the first priority port; e1) adjusting an assigned power budget value of the first priority port depending on actual power delivered to the vehicle; f1) assigning a remaining portion of the power budget to a port with a next priority; g1) if the power budget exceeds a first predetermined threshold value; starting a charge session at the next port where the remaining portion of the power budget is assigned; e2) again adjusting the assigned power budget value of the first priority port depending on the actual power delivered to the vehicle; f2) assigning a remaining portion of the power budget to the next port with the next priority; g2) if the power budget exceeds a second predetermined threshold value; restarting the charge session at the next port where the remaining portion of the power budget is assigned. - View Dependent Claims (14, 15, 16, 17)
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5. A charger for charging a plurality of electric vehicles simultaneously according to a protocol which allows advance negotiations about charge power for a charge session, before charging starts, wherein the charger is in a slave configuration for electric vehicles in a master configuration during the charge session, the charger comprising:
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a primary power exchange port for exchanging power with a power source, the power source and/or primary power exchange port being limited by a power rating; a plurality of secondary power exchange ports for exchanging power with a vehicle, each secondary power exchange port being limited by a power rating; at least one power converter for converting power between the primary power exchange port and a plurality of secondary power exchange ports, the at least one power converter being limited by a power rating; wherein a sum of the secondary power exchange port power ratings exceeds the power rating of; the power source, and/or a limit related to the power source which is implemented in software; and
/orprimary power exchange port, and/or at least one power converter; a charge controller configured for; a) determining a priority for each port where an electric vehicle is connected; b) assigning the maximum available power budget to a port with a first priority; c) applying a charge session at the port with the first priority; d) monitoring actual power delivered to the vehicle from the first priority port; e1) adjusting the assigned power budget value of the first priority port depending on actual power delivered to the vehicle; f1) assigning a remaining portion of the power budget to a port with a next priority; g1) if the power budget exceeds a first predetermined threshold value; a. starting a charge session at the next port where the remaining portion of the power budget is assigned; e2) again adjusting the assigned power budget value of the first priority port depending on the actual power delivered to the vehicle; f2) assigning the remaining portion of the power budget to the port with the next priority; g2) if the power budget exceeds a second predetermined threshold value; b. restarting the charge session at the next port where the remaining portion of the power budget is assigned. - View Dependent Claims (9, 12)
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6. A charging system comprising:
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at least two chargers for charging a plurality of electric vehicles simultaneously according to a protocol which allows advance negotiations about charge power for a charge session, before charging starts, said chargers being in a slave configuration for electric vehicles in a master configuration during the charge session; each charger having a primary power exchange port for exchanging power with a power source, the power source and/or primary power exchange port being limited by a power rating; each charger having a secondary power exchange port for exchanging power with a vehicle, the secondary power exchange port being limited by a power rating; each charger having at least one power converter for converting power between the primary power exchange port and a plurality of secondary power exchange ports, the at least power converter being limited by a power rating; wherein the primary power ports of the at least two chargers are connected to a same power source wherein a sum of the secondary power exchange port ratings exceeds the power rating of; the power source, and/or a limit related to the power source which is implemented in software; a charge controller configured for; a) determining a priority for each port where an electric vehicle is connected; b) assigning a maximum available power budget to a port with a first priority; c) applying a charge session at the first port with the first priority; d) monitoring actual power delivered to a vehicle from the first priority port; e1) adjusting the assigned power budget value of the first priority port depending on actual power delivered to the vehicle; f1) assigning a remaining portion of the power budget to a port with a next priority; g1) if the power budget exceeds a first predetermined threshold value; a. starting a charge session at the port where the remaining portion of the power budget is assigned; e2) again adjusting the assigned power budget value of the first priority port depending on the actual power delivered to the vehicle; f2) assigning the remaining portion of the power budget to the port with the next priority; g2) if the power budget exceeds a second predetermined threshold value; b. restarting the charge session at the port where the remaining portion of the power budget is assigned. - View Dependent Claims (18)
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Specification