Power Integrations, Inc.

Chargepoint, Inc.

Peter Vaughan

David Baxter

Pasquale Romano

Carl F Hagenmaier, Jr

Craig T Matsuno

Ricardo Luis Janezic Pregitzer

Gary A Eldridge

Patrick Kien Tran

Tiziano Pastore

Richard J Quattrini, Jr

Mingming M Mao

Alex B Djenguerian

Leif O Lund

Giao Minh Pham

Vikram Balakrishnan

Christian Pura Angeles

Ricardo L J Pregitzer

Yury Gaknoki

Michael Yue Zhang

Sundaresan Sundararaj

Jason Cuadra

Jose Requinton Del Carmen, Jr

Zongqi Hu

Simon Krugly

Richard J Quattrini

Carl F Hagenmaier

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

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 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.

Liquid cooled charging cable for charging electric vehicles

A first dispenser receives a request to initiate charging service for charging an electric vehicle. The first dispenser determines an amount of power that is available for the charging service for charging the electric vehicle including determining an availability status of multiple power modules that are located in the first dispenser and a second dispenser. The first dispenser determines whether the available amount of power is enough to meet a requested or determined amount of power draw of the electric vehicle. If the available amount of power is not enough to meet the requested or determined amount of power draw of the electric vehicle, and if there is at least one of the power modules that is available, the first dispenser requests allocation of the available power module and charging service commences.

A switching circuit with reverse current prevention for use in a Buck converter includes a power switch coupled to a coupling node, which is an interconnection point of a power switch, an inductor and a freewheeling diode of the Buck converter. The inductor is coupled between the coupling node and an output of the Buck converter, and the freewheeling diode is coupled between coupling node and an output return of the Buck converter. A controller is coupled to receive a feedback signal to control switching of the power switch to regulate a transfer of energy from the input to the output of the Buck converter. A reverse current prevention circuit is coupled to detect a reverse current condition of the power switch to generate an inhibit signal to inhibit the power switch from receiving a drive signal to prevent a reverse current through the power switch.

Reverse current blockage through buck controller block

A power converter controller includes a drive circuit to generate a drive signal to control switching of a power switch. The drive circuit generates the drive signal in response to a current sense signal, a current limit signal, a frequency skip signal, and a hold signal. A current limit generator generates the current limit signal in response to a load. A frequency detection circuit generates the frequency skip signal in response to the drive signal to indicate when an intended frequency of the drive signal is within a frequency window. The current limit signal remains fixed for at least a switching cycle when the intended frequency is within the frequency window. A first latch generates the hold signal to control the current limit generator to hold the current limit signal. The first latch generates the hold signal in response to the frequency skip signal and a feedback signal.

Reduction of audible noise in a power converter

A controller for use in a power converter that includes a current limit generator coupled to receive a feedback signal representative of an output of the power converter and generate an initial current limit signal. The controller includes a modulation circuit coupled to output a modulation signal which is a percentage of the initial current limit signal. An arithmetic operator is coupled to receive the initial current limit and selectively receive the modulation signal and output a current limit. A comparator is coupled to receive a current sense signal representative of a switch current conducted by a primary switch. A drive circuit is coupled to generate a drive signal to control switching of the primary switch to regulate the output of the power converter in response to the comparator output signal, and the drive circuit turns off the primary switch when the switch current has reached the current limit.

Load responsive jitter

A controller includes a drive circuit that generates a drive signal to switch a power switch to control a transfer of energy to of a power converter output in response to a current sense signal, a feedback signal, and a current limit signal. A current limit generator generates the current limit signal in response to a load coupled to the output. An exclusion frequency range detection circuit generates a frequency skip signal in response to the drive signal to indicate when an intended frequency of the drive signal is within an exclusion frequency window. The current limit signal is unvarying for at least a switching cycle when the intended frequency of the drive signal is within the exclusion frequency window. A first latch generates a hold signal to control the current limit generator to hold the current limit signal in response to the frequency skip signal and the feedback signal.

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Los Gatos, CA, United States of America

Peter Vaughan