Multi-function onboard battery charger module
AssigneeGM Global Technology Operations LLC
InventorsMinh-Khai Nguyen, Sanjeev M. Naik
Life of this patent
Estimating the term…
Abstract
A multi-function onboard charging module (OBCM) operable for charging a battery pack using a wide variety of offboard charging systems, such as to enable the OBCM to charge a battery pack using electrical power provided from different types of direct current (DC), single-phase alternating current (AC), and/or three-phase AC offboard charging systems.
Claims20
A multi-function onboard battery charger module (OBCM) for charging a battery pack with electrical power sourced from a plurality of offboard charging systems, the battery pack configured to provide electrical power to a motor of an electric vehicle, the motor converting the electrical power to mechanical power used to drive the electric vehicle, the OBCM comprising:
- a boost converter operable to boost a charging input to a boosted output, the boosted output operable for charging the battery pack;
- an isolation converter operable to electrically isolate the boost converter from the battery pack and to transform the boosted output to an isolated output, the isolated output operable for charging the battery pack;
- an output filter operable to mitigate noise within one of the boosted output and the isolated output, a filter output of the output filter interfacing the one of the boosted output and the isolated output with the battery pack;
- an isolation bypass circuit operable between an isolation bypass state and an isolation connect state, the isolation bypass state connecting the boosted output to a filter input of the output filter in bypass of the isolation converter, the isolation connect state connecting the boosted output to an isolation input of the isolation converter;
- and
- a battery bypass circuit operable between a battery connect state and a battery disconnect state, the battery connect state connecting the charging input through a direct connection to the battery pack in bypass of the boost and isolation converters, the battery disconnect state disconnecting the direct connection.
A multi-function onboard battery charger module (OBCM) for charging a battery pack with electrical power sourced from a plurality of offboard charging systems, comprising:
- an electrical connector having a direct current (DC) connection configured for electrically connecting to a direct current (DC) charging system of the offboard charging systems and an alternating current (AC) connection configured for electrically connecting to a single-phase AC charging system and a three-phase AC charging system of the offboard charging systems;
- a boost converter operable to boost a charging input to a boosted output, the boosted output operable for charging the battery pack;
- an isolation converter operable to electrically isolate the boost converter from the battery pack and to transform the boosted output to an isolated output, the isolated output operable for charging the battery pack;
- an output filter operable to mitigate noise within one of the boosted output and the isolated output, a filter output of the output filter interfacing the one of the boosted output and the isolated output with the battery pack;
- an isolation bypass circuit operable between an isolation bypass state and an isolation connect state, the isolation bypass state connecting the boosted output to a filter input of the output filter in bypass of the isolation converter, the isolation connect state connecting the boosted output to an isolation input of the isolation converter;
- and
- a battery bypass circuit operable between a battery connect state and a battery disconnect state, the battery connect state connecting the charging input through a direct connection to the battery pack in bypass of the boost and isolation converters, the battery disconnect state disconnecting the direct connection.
A multi-function onboard battery charger module (OBCM), comprising:
- a boost converter operable to boost a charging input to a boosted output;
- an isolation converter operable to electrically isolate the boost converter from the battery pack and to transform the boosted output to an isolated output;
- an output filter operable to mitigate noise within an output resulting from one of the boosted output and the isolated output;
- an isolation bypass circuit operable between an isolation bypass state and an isolation connect state, the isolation bypass state connecting the boosted output to a filter input of the output filter in bypass of the isolation converter, the isolation connect state connecting the boosted output to an isolation input of the isolation converter;
- and
- a battery bypass circuit operable between a connect state and a disconnect state, the connect state connecting the charging input through a direct connection to an output in bypass of the boost and isolation converters, the disconnect state disconnecting the direct connection.
Dependencies are inferred from the claim text.