Managing electric current allocation between charging equipment for charging electric vehicles
First Claim
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1. A method comprising:
- receiving a first message that indicates a request for an allocation of electric current through a first charging equipment, wherein the first charging equipment shares a current capacity with a second charging equipment, and wherein at a time of receipt of the first message the second charging equipment is presently allocated electric current;
determining that granting the request would exceed the current capacity andresponsive to that determination, adjusting the electric current allocated to the second charging equipment such that the first charging equipment can be allocated electric current and the and the current capacity is not exceeded;
granting the request and allocating electric current to the first charging equipment.
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Abstract
A first and second charging equipment for charging electric vehicles share a current capacity. A controller coupled with the first and second charging equipment limits a total amount of current drawn through the first charging equipment and the second charging equipment to not exceed the current capacity. The controller communicates a first and second current limit to the first and second charging equipment respectively to cause a first and second electric vehicle to limit their current draw to not exceed the first and second current limit respectively. A sum of current to be drawn at the first and second current limit does not exceed the current capacity.
57 Citations
12 Claims
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1. A method comprising:
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receiving a first message that indicates a request for an allocation of electric current through a first charging equipment, wherein the first charging equipment shares a current capacity with a second charging equipment, and wherein at a time of receipt of the first message the second charging equipment is presently allocated electric current; determining that granting the request would exceed the current capacity and responsive to that determination, adjusting the electric current allocated to the second charging equipment such that the first charging equipment can be allocated electric current and the and the current capacity is not exceeded; granting the request and allocating electric current to the first charging equipment. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus, comprising:
a controller coupled with a first charging equipment and a second charging equipment that share a current capacity, the controller configured to perform the following; limit a total amount of current drawn through the first charging equipment and the second charging equipment to not exceed the current capacity including; communicate a first current limit to the first charging equipment to cause a first electric vehicle to limit its current draw to not exceed the first current limit, communicate a second current limit to the second charging equipment to cause a second electric vehicle to limit its current draw to not exceed the second current limit, wherein a sum of current to be drawn at the first current limit and the second current limit does not exceed the current capacity. - View Dependent Claims (8, 9, 10, 11, 12)
Specification