US6608396B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical motor power management system
Assignee: GM Global Technology Operations LLC
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Filing: 2001-12-06
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Granted: 2003-08-19
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Expires: 2021-12-06
Abstract
Abstract A power control system for an electric traction motor in a vehicle comprising at least one inverter for providing conditioned electrical power to the electric traction motor, a plurality of power stages for providing DC power to the at least one inverter, each stage including a battery and boost/buck DC—DC converter, the power stages wired in parallel, and where the power stages are controlled to maintain an output voltage to the at least one inverter.
Inventors
- 👤 Scott D. Downer
- 👤 James F. Lazar
- 👤 James M. Nagashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:51
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/20; B60L15/2045; B60L50/00; B60L50/10; B60L50/16; B60L50/50; B60L50/60; B60L50/61; B60L58/00; B60L58/10; B60L58/18; B60L58/20; B60L2210/00; B60L2210/10; B60L2210/12; B60L2220/00; B60L2220/10; B60L2220/12; B60L2220/14; B60L2220/18; H; H02; H02J; H02J1/00; H02J1/10; H02J1/102; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/10; H02M3/145; H02M3/155; H02M3/156; H02M3/158; H02M3/1584; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/70; Y02T10/7072; Y02T10/72
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
75 words
A power control system for an electric traction motor in a vehicle comprising: at least one inverter for providing conditioned electrical power to the electric traction motor; a plurality of power stages for providing DC power to said at least one inverter, each stage including a battery and boost/buck DC—DC converter, said power stages wired in parallel; and wherein the power stages are controlled to maintain an output voltage to said at least one inverter.
Claim 2
Dependent Claim
75 words
A power control system for an electric traction motor in a vehicle comprising: at least one inverter for providing conditioned electrical power to the electric traction motor; a plurality of power stages for providing DC power to said at least one inverter, each stage including a battery and boost/buck DC—DC converter, said power stages wired in parallel; and wherein the power stages are controlled to maintain an output voltage to said at least one inverter.
Claim 3
Dependent Claim
24 words
The power control system of claim 1 wherein each stage is individually current controlled to balance the state of charge of each said battery.
Claim 4
Dependent Claim
19 words
The power control system of claim 1 wherein said inverter provides switched three phase power to said electric motor.
Claim 5
Dependent Claim
15 words
The power control system of claim 1 wherein said battery comprises a low voltage battery.
Claim 6
Dependent Claim
20 words
The power control system of claim 4 wherein said battery comprises a battery having a voltage of substantially 12 volts.
Claim 7
Dependent Claim
20 words
The power control system of claim 4 wherein said battery comprises a battery having a voltage of substantially 42 volts.
Claim 8
Dependent Claim
24 words
The power control system of claim 1 further including a current sensor for each power stage to detect the current in the power stage.
Claim 9
Dependent Claim
16 words
The power control system of claim 1 wherein each said power stage includes a boost switch.
Claim 10
Dependent Claim
16 words
The power control system of claim 1 wherein each said power stage includes a buck switch.
Claim 11
Dependent Claim
79 words
A vehicle drive system: a plurality of power stages, each said power stage including a battery, and a boost/buck DC—DC converter; at least one motor inverter electrically coupled to said plurality of power stages for providing conditioned electrical power; at least one electrical motor electrically coupled to said at least one motor inverter; and wherein said plurality of power stages are individually current controlled and wherein said plurality of power stages are jointly controlled to regulate an output voltage.
Claim 12
Dependent Claim
79 words
A vehicle drive system: a plurality of power stages, each said power stage including a battery, and a boost/buck DC—DC converter; at least one motor inverter electrically coupled to said plurality of power stages for providing conditioned electrical power; at least one electrical motor electrically coupled to said at least one motor inverter; and wherein said plurality of power stages are individually current controlled and wherein said plurality of power stages are jointly controlled to regulate an output voltage.
Claim 13
Dependent Claim
23 words
The vehicle drive system of claim 10 further comprising an internal combustion engine coupled in a parallel hybrid configuration with said electric motor.
Claim 14
Dependent Claim
23 words
The vehicle drive system of claim 10 further comprising an internal combustion engine coupled in a series hybrid configuration with said electric motor.
Claim 15
Dependent Claim
21 words
The vehicle drive system of claim 10 wherein said battery comprises a battery having an operating voltage of substantially 12 volts.
Claim 16
Dependent Claim
14 words
The vehicle drive system of claim 10 wherein said motor is an induction motor.
Claim 17
Dependent Claim
18 words
The vehicle drive system of claim 10 wherein said battery operates at a voltage of substantially 42 volts.
Claim 18
Dependent Claim
20 words
The vehicle drive system of claim 10 wherein said motor inverter provides three phase electrical power to said electric motor.
Claim 19
Dependent Claim
17 words
The vehicle drive system of claim 10 further including a current sensor for each said DC—DC converter.
Claim 20
Independent Claim
88 words
A method of generating voltage for the operation of an electric motor in a vehicle comprising: providing a plurality of power stages connected in parallel, each power stage including a boost/buck DC—DC converter and low voltage battery; providing at least one motor inverter for generating conditioned electric power to the electric motor to actuate the electric motor; sensing the current provided by each power stage; controlling the current individually in each power stage; and controlling the overall output voltage of the plurality of power stages wired in parallel.
Claim 21
Independent Claim
88 words
A method of generating voltage for the operation of an electric motor in a vehicle comprising: providing a plurality of power stages connected in parallel, each power stage including a boost/buck DC—DC converter and low voltage battery; providing at least one motor inverter for generating conditioned electric power to the electric motor to actuate the electric motor; sensing the current provided by each power stage; controlling the current individually in each power stage; and controlling the overall output voltage of the plurality of power stages wired in parallel.
Claim 22
Dependent Claim
27 words
The method of claim 18 further comprising the step of controlling regeneration current into each power stage to obtain a balanced charge in each low voltage battery.
Claim 23
Dependent Claim
27 words
The method of claim 18 further comprising the step of controlling the current from each power stage to obtain a balanced discharge in each low voltage battery.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-08-18 | 2007-02-17 | 2007-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-08-18 | 2011-02-17 | 2011-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-08-18 | 2015-02-17 | 2015-08-19 | $7700.00 | Window Closed / Lapsed |