System and method for electronic power take-off controls

Patent metadata

Field	Value
Publication number	US-11794584-B2
Application number	US-202117509773-A
Country	US
Kind code	B2
Filing date	Oct 25, 2021
Priority date	Sep 28, 2020
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A refuse vehicle includes a battery configured to provide electrical energy to drive at least one of a plurality of wheels, a vehicle body supported by the chassis and defining a receptacle for storing refuse therein, and an electric power take-off system including a motor configured to power to a hydraulic system in response to receiving the electrical energy from the battery, an inverter configured to provide the electrical energy to the motor from the battery, a sensor configured to detect thermal energy within the inverter, and a controller configured to receive data from the sensor, wherein the controller is further configured to determine if the data from the sensor is greater than a critical operating condition and reduce a rate of electrical energy supplied to the motor in response to determining that the data from the sensor is greater than the critical operating condition.

First claim

What is claimed is:

1. A refuse vehicle comprising:
a chassis supporting a plurality of wheels;
a battery configured to provide electrical energy to drive at least one of the plurality of wheels;
a vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and
an electric power take-off system coupled to at least one of the chassis and the vehicle body, the electric power take-off system including:
a motor configured to receive electrical energy from the battery and provide power to a hydraulic system in response to receiving the electrical energy from the battery,
an inverter configured to provide the electrical energy to the motor from the battery,
a sensor configured to detect thermal energy within the inverter, and
a controller configured to receive data from the sensor, wherein the controller is further configured to determine if the data from the sensor is greater than a critical operating condition and reduce a rate of electrical energy supplied to the motor in response to determining that the data from the sensor is greater than the critical operating condition.

2. The refuse vehicle of claim 1 , wherein the battery is a first battery and the electric power take-off system further includes a second battery, such that the electric power take-off system is configured to operate solely off energy from the second battery.

3. The refuse vehicle of claim 1 , further comprising a heat dissipation device configured to supply cooling fluid to at least one conduit proximate the inverter.

4. The refuse vehicle of claim 3 , wherein the controller is further configured to shut down the electric power take-off system in response to determining that the data from the sensor is greater than the critical operating condition.

5. The refuse vehicle of claim 4 , wherein the controller is further configured to receive data from a second sensor and determine if the data from the second sensor is less than a second critical operating condition and shut down the electric power take-off system in response to determining that the data from the second sensor is less than the second critical operating condition.

6. The refuse vehicle of claim 1 , further comprising a display device configured to display an alert in response to determining that the data from the sensor is greater than the critical operating condition.

7. The refuse vehicle of claim 1 , wherein the sensor includes a thermocouple.

8. A refuse vehicle comprising:
a chassis supporting a plurality of wheels;
a battery configured to provide electrical energy to drive at least one of the plurality of wheels;
a vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and
an electric power take-off system coupled to the chassis, the electric power take-off system including:
a motor configured to receive electrical energy from the battery and provide power to a hydraulic system;
an inverter configured to provide electrical energy to the motor from the battery,
a heat dissipation device in thermal communication with the inverter, wherein the heat dissipation device includes:
a fluid pump configured to pump cooling fluid through a plurality of conduits in thermal communication with the inverter;
a sensor configured to detect a flow rate of cooling fluid at least one of the plurality of conduits; and

a controller configured to receive data from the sensor, wherein the controller is further configured to determine if the data from the sensor is greater than a critical operating condition and reduce a rate of electrical energy supplied to the motor in response to determining that the data from the sensor is greater than the critical operating condition.

9. The refuse vehicle of claim 8 , wherein the heat dissipation device is a radiator.

10. The refuse vehicle of claim 9 , wherein the sensor is a first sensor and the electric power take-off system further includes a second sensor in thermal communication with the inverter and configured to detect thermal energy within the inverter.

11. The refuse vehicle of claim 10 , wherein the controller is further configured to receive data from the second sensor and determine if the data from the second sensor is greater than a second critical operating condition and shut down the electric power take-off system in response to determining that the data from the second sensor is greater than the second critical operating condition.

12. The refuse vehicle of claim 8 , wherein the electric power take-off system is self-contained on the vehicle body.

13. The refuse vehicle of claim 8 , further comprising a user interface configured to display an alert in response to determining that the data from the sensor is greater than the critical operating condition.

14. The refuse vehicle of claim 8 , wherein the sensor is a positive displacement meter.

15. A method comprising:
providing power to one or more components a system of a refuse vehicle, the refuse vehicle comprising:
a chassis supporting a plurality of wheels;
a battery configured to provide electrical energy to drive at least one of the plurality of wheels;
a vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and
an electric power take-off system coupled to at least one of the chassis and the vehicle body, the electric power take-off system including:
a motor configured to receive electrical energy from the battery and provide power to a hydraulic system in response to receiving the electrical energy from the battery,
an inverter configured to provide electrical energy to the motor from the battery,
a sensor configured to detect thermal energy within the inverter, and
a controller configured to receive data from the sensor;

receiving, by the controller, data from the sensor;
determining, by the controller, if the data from the sensor is greater than a critical operating condition; and
shutting down the one or more components of the system, by the controller, in response to determining the data received is greater than the critical operating condition.

16. The method of claim 15 , wherein the controller is further configured to shut down the electric power take-off system in response to determining that the data from the sensor is greater than the critical operating condition.

17. The method of claim 15 , further comprising a heat dissipation device is configured to supply cooling fluid to the inverter via at least one conduit.

18. The method of claim 17 , wherein the electric power take-off system further includes a second sensor within the at least one conduit configured to measure a flow rate of the cooling fluid.

19. The method of claim 18 , further comprising:
receiving, by the controller, data from the second sensor;
determining, by the controller, if the data from the second sensor is less than a second critical operating condition; and
shutting down, by the controller, the electric power take-off system in response to determining that the data from the second sensor is less than the second critical operating condition.

20. The method of claim 15 , wherein the refuse vehicle further comprises a display device configured to display an alert in response to determining that the data from the sensor is greater than the critical operating condition.

Assignees

• Oshkosh Corp

Inventors

• Koga Jeffrey
• Davis Emily
• Kappers Jerrod
• Schad Vince
• Messina Robert S
• Yakes Christopher K
• Hoover Vincent
• Weckwerth Clinton T
• Klein Zachary L
• Beck John
• Chan Brendan
• Wachter Skylar A
• Nasr Nader
• Smith Chad K
• Gary Logan
• Wente Derek A
• Naglik Shawn
• Bolton Mike J
• Wallin Jacob
• Wittman Quincy
• Rukas Christopher J
• Hess Dylan
• Rice Jason
• Wei Zhenyi
• Amin Bashar
• Linsmeier Catherine
• Rocholl Joshua D

Classifications

• B60L3/003 Primary

  relating to inverters · CPC title

• B60K1/02

  comprising more than one electric motor · CPC title

• B60K1/04

  of the electric storage means for propulsion · CPC title

• B60K25/02

  directly from an engine shaft · CPC title

• B60L1/003

  to auxiliary motors, e.g. for pumps, compressors · CPC title