DC pump drive module

• US 5,757,151 A
• Filed: 05/02/1996
• Issued: 05/26/1998
• Est. Priority Date: 05/02/1996
• Status: Expired due to Term

• Current Assignee: FCA US LLC (Stellantis NV)
• Original Assignee: Chrysler Corporation (Stellantis NV)
• Inventors: Sandberg, David, Donegan, Kevin J., Hartzell, Dennis E.
• Primary Examiner(s): Martin, David S.
• Application Number:
  US08/642,162
• Time in Patent Office: 754 Days
• Field of Search: 361/20-30, 361/88-93, 318/446-455, 318/140-158, 318/161, 318/139, 318/9, 318/440, 180/165, 180/65.1, 180/65.2, 180/65.3, 180/65.4, 180/65.8
• US Class Current: 318/150
• CPC Class Codes: B60K 2001/003 with means for cooling the electrical propulsion units
• CPC Class Codes: B60K 6/30 characterised by chargeable mechanical accumulators, e.g. flywheels
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60W 2710/06 Combustion engines, Gas turbines
• CPC Class Codes: B60Y 2200/114 Racing vehicles, e.g. Formula one, Karts
• CPC Class Codes: F28D 1/0308 the conduits being formed by paired plates touching each other F28D1/0358 takes precedence
• CPC Class Codes: H01L 2224/48139 with an intermediate bond, e.g. continuous wire daisy chain
• CPC Class Codes: H01L 2224/49111 the connectors connecting two common bonding areas, e.g. Litz or braid wires
• CPC Class Codes: H01L 2224/49113 the connectors connecting different bonding areas on the semiconductor or solid-state body to a common bonding area outside the body, e.g. converging wires
• CPC Class Codes: H01L 2924/19107 off-chip wires
• CPC Class Codes: H05K 7/20927 Liquid coolant without phase change
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/96 having chargeable mechanical accumulator

Abstract

A hybrid vehicle utilizes a power unit to store and convert power between a turbine alternator, flywheel and traction motor. The power unit includes a water cooled heater exchanger for cooling power transistors used to switch stored and generated power between the peripheral machines. A pump control system for pumping fluid through the heat exchanger includes a fluid pump, a control circuit connected to the fluid pump for operating same, and a power source having a nominal operating range and transients. The control circuit includes a shut off circuit for sensing power level on the power source and turning off the fluid pump when the transients are above a first predetermined level and turning on the fluid pump when the transients return below a second predetermined level.

Claims

1. A water pump modular motor drive system comprising:

a heat exchanger;

a fluid pump for pumping fluid to said heat exchanger;

a motor drive mounted on said heat exchanger and connected to said fluid pump for operating same;

a power source having a nominal operating range and transients, said heat exchanger adapted to cool said power source, said fluid pump and said motor drive;

a housing having a base mounted on said heat exchanger;

a power transistor module mounted on said base;

a power interface circuit electrically connected to said power transistor module and located above said base in said housing;

a signal control circuit located above said power interface circuit in said housing;

a low voltage power supply circuit located above said signal control circuit in said housing;

said signal control circuit including a shut off circuit for sensing voltage level on said power source and turning off said fluid pump and said motor drive when said transients are above a first predetermined level and turning on said fluid pump and said motor drive when said transients return below a second predetermined level.

2. A water pump modular motor drive system as set forth in claim 1 wherein said control circuit includes opto-isolators connected to drive a transistor to maintain said transistor off when receiving transient power signals.