Invention Grant
- Patent Title: Dissipation circuit for electric vehicles
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Application No.: US16709696Application Date: 2019-12-10
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Publication No.: US11552589B2Publication Date: 2023-01-10
- Inventor: Miao Wang
- Applicant: FORD GLOBAL TECHNOLOGIES, LLC
- Applicant Address: US MI Dearborn
- Assignee: FORD GLOBAL TECHNOLOGIES, LLC
- Current Assignee: FORD GLOBAL TECHNOLOGIES, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Brooks Kushman P.C.
- Agent David B Kelley
- Main IPC: H02P29/032
- IPC: H02P29/032 ; H02P27/06 ; B60L3/00

Abstract:
A method for dissipating power of an automotive electric drive system that includes a traction battery, and an inverter, wherein the inverter includes a DC bus between, and a dissipation circuit between the traction battery and DC bus, wherein the dissipation circuit includes a plurality of resistors connected in series between positive and negative terminals of the DC bus and a dissipation resistor and switch connected in series between the positive and negative terminals, the method includes responsive to a voltage across one of the plurality of resistors being less than a threshold value, deactivating the switch to prevent current flow from the positive terminal to the negative terminal through the dissipation resistor, and responsive to the voltage exceeding the threshold value, activating the switch to permit current flow from the positive terminal to the negative terminal through the dissipation resistor.
Public/Granted literature
- US20210175837A1 DISSIPATION CIRCUIT FOR ELECTRIC VEHICLES Public/Granted day:2021-06-10
Information query
IPC分类: