Hybrid power systems
First Claim
1. A hybrid power generation system, comprising:
- a thermodynamic working fluid in a first thermodynamic cycle;
a pump;
a motor;
a high pressure accumulator;
a low pressure reservoir;
a first thermodynamic cycle mass regulator operable to control the total mass of the thermodynamic working fluid within the first thermodynamic cycle;
a control system and at least one valve configured to control a mass flow of the thermodynamic working fluid into and out of the high pressure accumulator;
at least one heat exchanger;
a heat pump system in a second thermodynamic cycle; and
at least one valve configured to regulate a mass flow of the thermodynamic working fluid in the second thermodynamic cycle,wherein the second thermodynamic cycle is configured to operate independent of the first thermodynamic cycle by drawing the thermodynamic working fluid from the high pressure accumulator;
wherein the first thermodynamic cycle has a high pressure stage at a first pressure, the second thermodynamic cycle has a high pressure stage at a second pressure, and the second pressure is less than the first pressure; and
wherein the thermodynamic working fluid comprises carbon dioxide and is in a supercritical state.
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Accused Products
Abstract
The present invention generally relates to hybrid power systems for vehicles. In one embodiment, the present invention relates to hybrid power systems for various types of transportation vehicles where the hybrid power systems is partially, or even totally, based on the use of at least one hydraulic system to provide supplemental, or even the primary, motion power for a hybrid vehicle. In another embodiment, the hybrid power systems of the present invention are capable of providing both motion power as well as cabin comfort heating and/or cooling. In still another embodiment, a hybrid vehicle according to the present invention comprises a power generating system and passenger cabin comfort system, wherein the power generating system comprises a thermodynamic working fluid (FA) in a first thermodynamic cycle (C1), a pump (P1), a motor (M1), a high pressure accumulator, a low pressure reservoir, and at least one heat exchanger, wherein the thermodynamic working fluid (FA) is concurrently operable to create either vehicle motion through the motor (M1) or electricity through a generator and is operable to create passenger cabin cooling or heating through the expansion or contraction of the thermodynamic working fluid (FA).
427 Citations
16 Claims
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1. A hybrid power generation system, comprising:
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a thermodynamic working fluid in a first thermodynamic cycle; a pump; a motor; a high pressure accumulator; a low pressure reservoir; a first thermodynamic cycle mass regulator operable to control the total mass of the thermodynamic working fluid within the first thermodynamic cycle; a control system and at least one valve configured to control a mass flow of the thermodynamic working fluid into and out of the high pressure accumulator; at least one heat exchanger; a heat pump system in a second thermodynamic cycle; and at least one valve configured to regulate a mass flow of the thermodynamic working fluid in the second thermodynamic cycle, wherein the second thermodynamic cycle is configured to operate independent of the first thermodynamic cycle by drawing the thermodynamic working fluid from the high pressure accumulator; wherein the first thermodynamic cycle has a high pressure stage at a first pressure, the second thermodynamic cycle has a high pressure stage at a second pressure, and the second pressure is less than the first pressure; and wherein the thermodynamic working fluid comprises carbon dioxide and is in a supercritical state. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A hybrid power generation system, comprising:
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a thermodynamic working fluid in a first thermodynamic cycle; a pump; a motor; a high pressure accumulator; a low pressure reservoir; a first thermodynamic cycle mass regulator operable to control the total mass of the thermodynamic working fluid within the first thermodynamic cycle; a control system and at least one valve configured to control a mass flow of the thermodynamic working fluid into and out of the high pressure accumulator; at least one heat exchanger; a heat pump system in a second thermodynamic cycle; a pressure ratio between a low pressure stage and a high pressure stage of the first thermodynamic cycle, wherein the first thermodynamic cycle has a peak high pressure temperature and the peak high pressure temperature is a dynamic function of the pressure ratio, wherein the thermodynamic working fluid comprises carbon dioxide and is in a supercritical state. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification