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. A first and second current limit is communicated to a first and second electric vehicle respectively to limit the current draw of first and second electric vehicle to the first and second current limit respectively. A sum of the current drawn at the first and second current limit does not exceed the current capacity.

Abstract: Dynamic allocation of power modules for charging electric vehicles is described herein. A power cabinet includes multiple power modules that each are capable of supplying an amount of power to a dispenser. Multiple dispensers are coupled with the same power cabinet. A first power bus couples a first dispenser and switchably connects the power modules to the first dispenser; and a second power bus couples a second dispenser and switchably connects the power modules to the second dispenser. The power cabinet includes a control unit that is configured to cause the power modules to switchably connect and disconnect from the first power bus and the second power bus to dynamically allocate the power modules between the first dispenser and the second dispenser.

Abstract: Electric vehicle charging stations are coupled with a circuit sharing controller. Multiple electric vehicle charging stations are wired on the same electrical circuit. The circuit sharing controller implements a circuit sharing process that dynamically allocates electric current to charging stations on the same electrical circuit such that the capacity of the electrical circuit is not exceeded while permitting each of those charging stations to draw electric current through that electrical circuit for at least some amount of time.

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.

Abstract: Dynamic allocation of power modules for charging electric vehicles is described herein. The charging system includes multiple dispensers that each include one or more power modules that can supply power to any one of the dispensers at a time. A dispenser includes a first power bus that is switchably connected to one or more local power modules and switchably connected to one or more power modules located remotely in another dispenser. The one or more local power modules are switchably connected to a second power bus in the other dispenser. The dispenser includes a control unit that is to cause the local power modules and the remote power modules to switchably connect and disconnect from the first power bus to dynamically allocate the power modules between the dispenser and the other dispenser.

Abstract: Dynamic allocation of power modules for charging electric vehicles is described herein. A power cabinet includes multiple power modules that each are capable of supplying an amount of power to a dispenser. Multiple dispensers are coupled with the same power cabinet. A first power bus couples a first dispenser and switchably connects the power modules to the first dispenser; and a second power bus couples a second dispenser and switchably connects the power modules to the second dispenser. The power cabinet includes a control unit that is configured to cause the power modules to switchably connect and disconnect from the first power bus and the second power bus to dynamically allocate the power modules between the first dispenser and the second dispenser.

Abstract: Electric vehicle charging stations are coupled with a circuit sharing controller. Multiple electric vehicle charging stations are wired on the same electrical circuit. The circuit sharing controller implements a circuit sharing process that dynamically allocates electric current to charging stations on the same electrical circuit such that the capacity of the electrical circuit is not exceeded while permitting each of those charging stations to draw electric current through that electrical circuit for at least some amount of time.

Abstract: A first and second charging equipment for charging electric vehicles is wired on a single electrical circuit. Electric current is dynamically allocated to the first and second charging equipment such that the maximum amount of electric current supported by the single electrical circuit is prevented from being exceeded. Dynamically allocating electric current to the first and second charging equipment includes communicating a first and second current limit to a first and second electric vehicle respectively connected to the first and second charging equipment to cause the first and second electric vehicle to limit their current draw to not exceed the first and second current limit respectively. The sum of current being drawn at the first and second current limit does not exceed the maximum amount of electric current supported by the single electrical circuit.

Abstract: Electric vehicle charging stations are coupled with a circuit sharing controller. Multiple electric vehicle charging stations are wired on the same electrical circuit. The circuit sharing controller implements a circuit sharing process that dynamically allocates electric current to charging stations on the same electrical circuit such that the capacity of the electrical circuit is not exceeded while permitting each of those charging stations to draw electric current through that electrical circuit for at least some amount of time.

Abstract: A total amount of current drawn through a first charging equipment and a second charging equipment that wired on a same electrical circuit is limited to not exceed a maximum amount of electric current supported by the electrical circuit to prevent the electrical circuit from being overloaded, where limiting includes communicating a first current limit to a first electric vehicle connected to the first charging equipment to cause the first electric vehicle to limit its current draw to not exceed the first current limit, and communicating a second current limit to a second electric vehicle connected to the second charging equipment to cause the second electric vehicle to limit its current draw to not exceed the second current limit, where a sum of current being drawn at the first current limit and the second current limit does not exceed the maximum amount of electric current supported by the electrical circuit.

Abstract: A message is received that indicates a request for an allocation of electric current at a first electric vehicle charging station that is connected to a same main electrical circuit breaker as a second electric vehicle charging station that is presently allocated electric current. Responsive to determining that granting the request would exceed a maximum amount of electric current supported by the main electrical circuit breaker, the electric current allocation of at least the second electric vehicle charging station is adjusted such that the request for allocation can be granted and the request is granted and electric current is allocated to the first electric vehicle charging station.

Abstract: A ground continuity circuit is described. In one embodiment, a first voltage of a signal associated with an electrical line input to a circuit is measured with respect to a first resistance value of the circuit. A ground continuity test signal is asserted into the circuit that causes the resistance value of the circuit to change to a second resistance value. A second voltage of the signal is measured with respect to the second resistance value. A ground impedance value of the circuit is determined as a function of the first and second measured voltages and the first and second resistance values.

Abstract: A total amount of current drawn through a first charging equipment and a second charging equipment that wired on a same electrical circuit is limited to not exceed a maximum amount of electric current supported by the electrical circuit to prevent the electrical circuit from being overloaded, where limiting includes communicating a first current limit to a first electric vehicle connected to the first charging equipment to cause the first electric vehicle to limit its current draw to not exceed the first current limit, and communicating a second current limit to a second electric vehicle connected to the second charging equipment to cause the second electric vehicle to limit its current draw to not exceed the second current limit, where a sum of current being drawn at the first current limit and the second current limit does not exceed the maximum amount of electric current supported by the electrical circuit.

Abstract: Electric vehicle charging stations are coupled with a circuit sharing controller. Multiple electric vehicle charging stations are wired on the same electrical circuit. The circuit sharing controller implements a circuit sharing process that dynamically allocates electric current to charging stations on the same electrical circuit such that the capacity of the electrical circuit is not exceeded while permitting each of those charging stations to draw electric current through that electrical circuit for at least some amount of time.

Abstract: Electric vehicle charging stations are coupled with a circuit sharing controller. Multiple electric vehicle charging stations are wired on the same electrical circuit. The circuit sharing controller implements a circuit sharing process that dynamically allocates electric current to charging stations on the same electrical circuit such that the capacity of the electrical circuit is not exceeded while permitting each of those charging stations to draw electric current through that electrical circuit for at least some amount of time.

Abstract: A self powered electric vehicle charging connector locking system for locking and unlocking a charging connector of an electric vehicle charging cord includes an electric vehicle charging station and an electric vehicle charging connector locking holster. The charging station includes an electricity control device to energize and de-energize the charging cord to control a supply of electricity available to flow through the charging cord. Current does not flow through the charging cord when it is de-energized and some amount of current is capable of flowing through the charging cord when it is energized. The locking holster includes a charging connector locking holster inlet to receive the charging connector of the charging cord and a locking unit to lock the charging connector in the locking holster when it is inserted into the locking holster inlet and unlock the charging connector from the locking holster responsive to the charging cord becoming energized.

Abstract: A breakaway mechanism for a charging cable of an electric vehicle charging station includes a retention component and a breakaway component. The retention component is secured to the charging station and the breakaway component is secured to the charging cable. The charging cable passes through the breakaway component and includes charging wires that connect to connectors on the charging station. The breakaway component is adapted to disengage from the retention component at a predetermined pull force thereby causing the charging wires to disconnect from the connectors on the charging station.

Abstract: A ground continuity circuit is described. In one embodiment, a first voltage of a signal associated with an electrical line input to a circuit is measured with respect to a first resistance value of the circuit. A ground continuity test signal is asserted into the circuit that causes the resistance value of the circuit to change to a second resistance value. A second voltage of the signal is measured with respect to the second resistance value. A ground impedance value of the circuit is determined as a function of the first and second measured voltages and the first and second resistance values.

Abstract: A safety supervisory module (SSM) of an electric vehicle charging station that controls flow of current from the electric vehicle charging station to an electric vehicle. The SSM includes a set of two or more processors to control operation of a contactor control circuitry of the SSM to open and close a set of contacts of a set of power supply lines to control flow of current from the charging station to an electric vehicle. Each processor independently determines whether an unsafe condition exists and asserts a relay enable signal to the contactor control circuitry only when an unsafe condition does not exist.

Abstract: A self powered electric vehicle charging connector locking system for locking and unlocking a charging connector of an electric vehicle charging cord includes an electric vehicle charging station and an electric vehicle charging connector locking holster. The charging station includes an electricity control device to energize and de-energize the charging cord to control a supply of electricity available to flow through the charging cord. Current does not flow through the charging cord when it is de-energized and some amount of current is capable of flowing through the charging cord when it is energized. The locking holster includes a charging connector locking holster inlet to receive the charging connector of the charging cord and a locking unit to lock the charging connector in the locking holster when it is inserted into the locking holster inlet and unlock the charging connector from the locking holster responsive to the charging cord becoming energized.