An electric vehicle supply equipment (EVSE) includes a thermal management system that includes a dual-sided heatsink that includes a first side that faces internal ambient air of the EVSE and a second side that faces external ambient air. A first fan circulates the internal ambient air of the EVSE across the first side to reject heat from the internal ambient air into the first side. A first airflow guide guides the internal ambient air across the first side of the dual-sided heatsink. A second fan draws external ambient air that flows across the second side to reject heat from the second side out of the thermal management system. A second airflow guide guides the external ambient air across the second side. An airflow seal prevents the external ambient air and the internal ambient air from mixing.
An open-loop fluxgate-type current sensor is described. The current sensor includes a single winding around a core that combines drive and sense that is used as both an excitation source and a feedback element to measure current through a primary winding. The current sensor further includes an H-bridge driver to impress voltage to the single winding to cause current to saturate the core, the volage being impressed with opposing polarities repeatedly causing the core to saturate at opposing polarities. The current sensor further includes an analog transconductance integrator that continuously integrates the current to infer magnetizing force being driven into the core at the opposing polarities. The current sensor further includes a microcontroller unit (MCU) that calculates residual current based on the inferred magnetizing force being driven into the core at the opposing polarities and cause remedial action to be taken when the calculated residual current exceeds a threshold.
G01R 15/20 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices
G01R 15/18 - Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
G01R 33/04 - Measuring direction or magnitude of magnetic fields or magnetic flux using the flux-gate principle
G01R 19/165 - Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
H01F 1/03 - Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
3.
AUTOMATICALLY IDENTIFYING AN INTENDED ELECTRIC VEHICLE SUPPLY EQUIPMENT
Automatically identifying an electric vehicle supply equipment (EVSE) is described. A receiver device receives wireless signals from EVSEs, where each wireless signal includes an identifier that is associated with the one of the EVSEs from which that wireless signal is received. The receiver device records signal strength values of the wireless signals and determines, based on the recorded signal strength values, which of the EVSEs is closest to the receiver device. The receiver device initiates a request for an action at the EVSE determined to be closest to the receiver device.
An electric vehicle charging cable includes power charging wire(s) to carry power between an electric vehicle supply equipment (EVSE) and an electric vehicle (EV), signal wire(s) to carry signaling data relating to charging the EV, a charging cable connector to connect the power charging wire(s) and the signal wire(s) to an inlet of the EV, and a charging protocol controller. The charging protocol controller includes a first connector to terminate the signal wire(s), a second connector to terminate supply voltage and communication from the EVSE, one or more communication circuit(s), and a processor that performs signal handshake and control and communication between the EVSE and the charging protocol controller.
A direct current (DC) electric vehicle supply equipment (EVSE) that includes a secure enclosure. The secure enclosure encloses a set of one or more contactors to open and close to provide DC charge transfer with one or more electric vehicles; a conductor to electrically connect the contactors with DC input; a current sensor to measure current draw; a voltage sensing circuitry to measure voltage; and one or more circuits that receive current data from the current sensor and voltage data from the voltage sensing circuitry, the one or more circuits to perform one or more safety functions and one or more metering functions using the received current data and voltage data. The DC EVSE may also include, external to the secure enclosure, a controller that is coupled with the circuits to control the opening and closing of the set of contactors.
B60L 53/30 - Constructional details of charging stations
B60L 53/60 - Monitoring or controlling charging stations
B60L 53/68 - Off-site monitoring or control, e.g. remote control
G07F 15/00 - Coin-freed apparatus with meter-controlled dispensing of liquid, gas, or electricity
H04L 9/32 - Arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system
A cable reel includes a spool to extend and retract a cable that includes a first conductor. The cable reel further includes a first connector that is connected with the spool and rotates in relation to the spool. The first connector includes a first contact that is connected to the first conductor of the cable. The cable reel further includes a second connector that does not rotate. The first connector and the second connector are mateable. The second connector includes a second contact that is connected to a second conductor. The first connector and the second connector automatically mate to make an electrical connection between the first conductor of the cable and the second conductor when the first connector and the second connector are aligned in a predetermined position and at least some length of cable has been extended.
An electric field (e-field) touchscreen is described. A continuous stream of digital signal data that represents e-field signal deviations is received from multiple receive electrodes. The stream of digital signal data is processed using a machine learning model to determine a touch event and a location on a display screen of the touchscreen. The touch event is processed. The e-field touchscreen may determine whether a non-normal event may be occurring causing noise in the digital signal data. If so, the received stream of digital signal data is processed through a low-pass filter and processed through an absolute value average baseline filter. A difference between the filtered data is determined to generate a filtered stream of digital signal data and is processed using the machine learning model determine a touch event and a location on a display screen of the touch event. The touch event is processed.
A mobile device reads a near-field communication (NFC) tag of an electric vehicle supply equipment (EVSE). The NFC tag is encoded with an identifier of the EVSE. The mobile device transmits a charging session authorization request to a server to request authorization for a charging session at the EVSE, the request including the identifier of the EVSE and an access identifier of the electric vehicle operator. The server determines whether to grant authorization for the charging session. If granted, the server transmits a command to the EVSE to allow the charging session.
An external electric vehicle battery thermal management system is described. An electric vehicle thermal system provides external coolant to an internal battery thermal system of an electric vehicle. The internal battery thermal system includes a liquid-to-liquid heat exchanger to cool or warm the set of batteries of the electric vehicle. The external coolant is pumped through a first side of the heat exchanger and serves as the source to cool or heat internal coolant pumped through a second side of the heat exchanger. The external coolant and the internal coolant do not mix.
B60L 58/33 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells for controlling the temperature of fuel cells, e.g. by controlling the electric load by cooling
B60L 58/27 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
B60L 53/37 - Means for automatic or assisted adjustment of the relative position of charging devices and vehicles using optical position determination, e.g. using cameras
B60L 53/16 - Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
B60L 53/30 - Constructional details of charging stations
An electric vehicle charging station that uses a liquid cooled charging cable is described. The charging station includes a charging port that is configured to connect to a liquid cooled charging cable. The liquid cooled charging cable includes a cooling loop where a return side of the cooling loop is a warm side. The charging station includes a heat exchanger that transfers heat from the warm side of the cooling loop. The charging station includes a pump to pump a cool side of the liquid through the cooling loop. The charging station includes a module that causes the following to be performed in response to a startup sequence of the electric vehicle charging station: iteratively perform operations of operating the pump at increasing speeds and measuring corresponding pressure output until the speed of the pump is at its normal capacity.
A cable clamp for a charging cable of an electric vehicle charging station. The cable clamp includes a first clamping piece and a second clamping piece that is complementary to the first clamping piece. The first clamping piece and the second clamping piece are adapted to be secured together and adapted to grip the charging cable of the electric vehicle charging station that passes through the first clamping piece and the second clamping piece. The shape of the first clamping piece and the second clamping piece includes a curved portion that forces the charging cable of the electric vehicle charging station to exit the electric vehicle charging station at a predetermined exit angle.
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.
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.
An electric vehicle charging station detects a property of a charging cable connected to the electric vehicle charging station and determines, based on the detected property, an ampere capacity of the charging cable. The electric vehicle charging station automatically sets a maximum amperage output of the electric vehicle charging station to not exceed the determined ampere capacity of the charging cable.
An organization extends an affiliation offer to electric vehicle operators. The affiliation offer communicates a set of benefits for the electric vehicle operators provided by the organization, and also communicates a set of conditions for acceptance of the affiliation offer. An acceptance of the affiliation offer is received from an electric vehicle operator, where the acceptance includes an identifier associated with that electric vehicle operator. Responsive to verifying that the electric vehicle operator is allowed to be affiliated with the organization, the electric vehicle operator is associated with the organization to provide the set of benefits.
A method and apparatus for creating one or more groups of electric vehicle charging objects includes receiving input from an organization to group a selected set of electric vehicle charging objects, creating the group in response to the received input, where the created group includes as its members the selected set of electric vehicle charging objects, and performing a set of acts for the members of the group as a whole.
An electric vehicle charging station charging electric vehicles dynamically responds to power limit messages. The charging station includes a charging port that is configured to electrically connect to an electric vehicle to provide power to charge that electric vehicle. The charging station also includes a power control unit coupled with the charging port, the power control unit configured to control an amount of power provided through the charging port. The charging station also includes a set of one or more charging station control modules that are configured to, in response to receipt of a message that indicates a request to limit an amount of power to an identified percentage and based on a history of power provided through the charging port over a period of time, cause the power control unit to limit the power provided through the charging port to the identified percentage.
H02J 7/14 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
18.
OVERRIDING DELAYED ELECTRIC VEHICLE CHARGING EVENTS
An electric vehicle charging station that supports delayed charging overrides. In one embodiment, to support delayed charging override in an electric vehicle charging station that requires authorization, after authentication is successful (e.g., the electric vehicle operator is authorized) and the electric vehicle is detected (e.g., the charging cord has been plugged into the charging port of the electric vehicle), the charging station begins a plug out timer for the electric vehicle operator to unplug the charging cord from the charging port of the electric vehicle and then begins a plug-in timer for the electric vehicle operator to plug the charging cord back into the charging port of the electric vehicle. If the electric vehicle operator does so within the periods of the timers, the charging session will not end and the delayed charging will be overridden.
In one embodiment, an electric vehicle charging network server provides an interface for electric vehicle charging station owners to selectively configure whether their electric vehicle charging station(s) are displayable on a charging station locator application to a specific set of one or more electric vehicle operators. For example, the interface may allow an electric vehicle charging station owner to specify that one or more of its charging stations are capable of being displayed on a charging station locator application to only a group of one or more electric vehicle operators (those charging station(s) will not be displayed on a charging station locator application used by other electric vehicle operators).
An electric vehicle charging network server establishes electric vehicle charging reservation groups. The electric vehicle charging network server is coupled with multiple electric vehicle charging stations that each include one or more charging ports and are owned by a charging station host. The server receives input from the charging station host to configure an electric vehicle charging reservation group. The server configures the electric vehicle charging reservation group according to the received input. The configured electric vehicle charging reservation group includes multiple charging ports and allows a limited number of electric vehicle charging group reservations that are each applicable to all of the charging ports that are part of the configured electric vehicle charging reservation group.
G06F 15/16 - Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
patents
