Hybrid vehicle drive system and method using split shaft power take off

• US 10,427,520 B2
• Filed: 01/29/2018
• Issued: 10/01/2019
• Est. Priority Date: 11/18/2013
• Status: Active Grant

• Current Assignee: Power Technology Holdings LLC
• Original Assignee: Power Technology Holdings LLC
• Inventors: Dalum, Joseph Thomas
• Primary Examiner(s): Verley, Nicole T
• Application Number:
  US15/883,067
• Publication Number:
  US 20180154773A1
• Time in Patent Office: 610 Days
• Field of Search: None
• CPC Class Codes: B60K 17/28 characterised by arrangement, location, or type of power take-off
• CPC Class Codes: B60K 2025/005 driven by electric motors forming part of the propulsion unit
• CPC Class Codes: B60K 25/00 Auxiliary drives B60K16/00 takes precedence; arrangements of tyre-inflating pumps mounted on vehicles B60C23/10; driving tyre-inflating pumps B60C; driving engine auxiliaries F02B
• CPC Class Codes: B60K 25/06 from the transmission power take-off transmissions having power-take-off B60K17/28
• CPC Class Codes: B60K 6/00 Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units arrangement or mounting in vehicles of electrical gearing, in which an electrical machine serves only as reduction gearing and not as the prime mover and in which no electrical storing means are used B60K17/12; control and regulation of purely electrical prime movers B60L; prime-movers comprising electrical and internal combustion motors in a common engine block or housing per se F02B65/00; electric motors or motor-generators used for starting the combustion engine F02N11/04; electric motors for synchronising gearing F16H3/12 Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
• CPC Class Codes: B60Y 2200/14 Trucks; Load vehicles, Busses
• CPC Class Codes: B60Y 2200/221 Tractors
• CPC Class Codes: B60Y 2200/412 Excavators
• CPC Class Codes: B60Y 2200/415 Wheel loaders
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/904 Component specially adapted for hev

Abstract

A hybrid vehicle drive system for use with a first prime mover and a transmission driven by the first prime mover. The system includes a second prime mover coupled to a rechargeable energy source, a split shaft PTO, and an accessory coupled to the split shaft PTO. The split shaft PTO is configured to couple to the second prime mover, and the accessory is configured to receive power from the second prime mover through the split shaft PTO.

Claims

1. A vehicle drive system for a vehicle including a first prime mover, a first prime mover driven transmission, and a rechargeable energy source, the vehicle drive system comprising:

a power take-off (PTO) connected to the first prime mover configured to rotate a PTO interface at a first speed;

a gear box connected to the PTO at the PTO interface and configured to rotate at a second speed at an upper output interface when the PTO interface rotates at the first speed, wherein the second speed is higher than the first speed; and

an electric motor in direct or indirect mechanical communication with the first prime mover driven transmission through the PTO and the gear box, wherein the electric motor can receive power from the first prime mover driven transmission via the upper output interface of the gear box.

2. The vehicle drive system of claim 1, further comprising:

a fluid motor in direct or indirect mechanical communication with a lower output interface of the gear box, the fluid motor being powered by rotation of the electric motor via the gear box.

3. The vehicle drive system of claim 2, wherein the fluid motor can be rotated using the power from the first prime mover via the lower output interface of the gear box.

4. The vehicle drive system of claim 3, wherein the upper output interface of the gear box has a higher rotational speed compared to the lower output interface of the gear box.

5. The vehicle drive system of claim 1, wherein the upper output interface of the gear box has a higher rotational speed compared to the first prime mover.

6. The vehicle drive system of claim 2, wherein the lower output interface of the gear box is rotated with the first speed.

7. The vehicle drive system of claim 6, wherein the lower output interface of the gear box has a lower rotational speed compared to the first prime mover.

8. The vehicle drive system of claim 2, wherein the upper output interface and the lower output interface of the gear box have higher rotational speeds compared to an input of the gear box.

9. The vehicle drive system of claim 2, further comprising:

a clutch between the lower output interface of the gear box and the fluid motor.

10. The vehicle drive system of claim 2, wherein the fluid motor comprises a fluid pump.

11. A vehicle drive system, comprising:

a first prime mover,

a first prime mover driven transmission coupled to the first prime mover;

a rechargeable energy source;

an electric motor; and

a component comprising a power take-off coupled to the first prime mover driven transmission and a gear box, wherein the gear box is configured to output at a first interface and input at a second interface connected to the PTO, wherein the first prime mover is configured to rotate the second interface at a first speed via the first prime mover driven transmission and the gear box is configured to rotate the first interface at a second speed when the second interface rotates at the first speed, wherein the second speed is higher than the first speed, wherein the electric motor is coupled to the first interface of the gear box.

12. The vehicle drive system of claim 11, further comprising:

a fluid motor in direct or indirect mechanical communication with a third interface of the gear box.

13. The vehicle drive system of claim 12, wherein the fluid motor can be rotated using power from the first prime mover via the first interface of the gear box or the second interface of the gear box, wherein the first interface of the gear box has a higher rotational speed compared to the third interface of the gear box.