System and method for electronic power take-off controls

Patent metadata

Field	Value
Publication number	US-2024001764-A1
Application number	US-202318367844-A
Country	US
Kind code	A1
Filing date	Sep 13, 2023
Priority date	Sep 28, 2020
Publication date	Jan 4, 2024
Grant date	—

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 vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and at least one battery coupled to at least one of the chassis or the vehicle body and configured to provide electrical energy; 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 first motor configured to receive the electrical energy from the at least one battery and provide power to a hydraulic system in response to receiving the electrical energy from the at least one battery;
a second motor configured to receive the electrical energy from the at least one battery and provide power to a subsystem in response to receiving the electrical energy from the at least one battery;
at least one inverter configured to provide the electrical energy to the first motor from the at least one battery and to the second motor from the at least one battery;
at least one sensor configured to detect data related to the at least on inverter;
a controller configured to receive the data from the at least one sensor, wherein the controller is further configured to determine if the data from the at least one sensor is greater than a critical operating condition and reduce a rate of electrical energy supplied to at least one of the first motor or the second motor in response to determining that the data from the at least one sensor is greater than the critical operating condition.

2 . The refuse vehicle of claim 1 , wherein the controller is further configured to shut down the subsystem in response to determining that the data from the at least one sensor is greater than the critical operating condition.

3 . The refuse vehicle of claim 1 , wherein the at least one sensor includes a thermocouple and the data includes thermal data corresponding with a temperature of the inverter.

4 . 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.

5 . The refuse vehicle of claim 4 , wherein the at least one sensor is configured to detect a flow rate of cooling fluid through the at least one conduit.

6 . A refuse vehicle comprising:
a chassis supporting a plurality of wheels; a vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and a battery coupled to at least one of the chassis or the vehicle body and configured to provide electrical energy; an electric power take-off system coupled to the chassis, the electric power take-off system including:
a motor configured to receive the electrical energy from the battery and provide power to a hydraulic system;
an inverter configured to provide the electrical energy to the motor from the battery,
a fluid pump configured to pump cooling fluid through a cooling circuit including at least one conduit in thermal communication with the inverter;
a sensor configured to detect data corresponding with the cooling fluid; and
a controller configured to receive the data from the sensor, wherein the controller is further configured to determine if the data from the sensor is greater than or less 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.

7 . The refuse vehicle of claim 6 , wherein the data corresponds with a volume of the cooling fluid within the cooling circuit and the critical operating condition corresponds with a minimum volume of the cooling fluid within the cooling circuit.

8 . The refuse vehicle of claim 6 , wherein the data corresponds with a flow rate of the cooling fluid within the cooling circuit and the critical operating condition corresponds with a minimum flow rate of the cooling fluid within the cooling circuit.

9 . The refuse vehicle of claim 6 , wherein the data includes first data and the sensor is a first sensor configured to detect the first data corresponding with a temperature of the cooling fluid and the electric power take-off system further includes:
a second sensor configured to detect second data corresponding with a volume of the cooling fluid within the cooling circuit.

10 . The refuse vehicle of claim 6 , wherein the electric power take-off system further includes a heat dissipation device configured to supply the cooling fluid to the at least one conduit.

11 . The refuse vehicle of claim 10 , wherein the heat dissipation device includes a radiator.

12 . The refuse vehicle of claim 6 , wherein the sensor is a first sensor and the refuse vehicle further includes:
a user interface coupled to the vehicle body and configured to display an alert, a second sensor configured to detect second data corresponding with at least one of the battery, the motor, the inverter, or the cooling circuit, wherein the controller is configured to:
receive the second data from the second sensor, determine the data from the second sensor is greater than or less than a second critical operating condition,
determine a source of irregularity in response to determining the data from the second sensor is greater than or less than the second critical operating condition, and
cause the alert to be displayed on the user interface, the alert including the source of irregularity.

13 . The refuse vehicle of claim 12 , wherein the source of irregularity corresponds with the inverter; and
determining the source of irregularity includes determining, based on the received data from the second sensor, that the battery is operating in a normal battery condition, the motor is operating in a normal motor condition, and the cooling circuit is operating in a normal cooling circuit condition.

14 . A refuse vehicle comprising:
a chassis supporting a plurality of wheels; a vehicle body supported by the chassis and defining a receptacle for storing refuse therein; and at least one battery coupled to at least one of the chassis or the vehicle body and configured to provide electrical energy; an electric power take-off system coupled to the chassis, the electric power take-off system including:
a motor configured to receive the electrical energy from the at least one battery and provide power to a hydraulic system;
an inverter configured to provide the electrical energy to the motor from the at least one battery,
a disconnect configured to selectively provide power between the at least one battery and the inverter; and
a controller configured to cause the disconnect to decouple the at least one battery from the inverter.

15 . The refuse vehicle of claim 14 , wherein the at least one battery is configured to provide the electrical energy to drive at least one of the plurality of wheels when the at least one battery is decoupled from the inverter.

16 . The refuse vehicle of claim 14 , further comprising a vehicle subsystem, wherein the controller is further configured to cause the disconnect to decouple the at least one battery from the vehicle subsystem.

17 . The refuse vehicle of claim 14 , wherein the electric power take-off system further includes at least one sensor configured to detect data related to the at least one battery or the inverter, and the controller is configured to cause the disconnect to decouple the at least one battery from the inverter in response to determining that the data from the at least one sensor is greater than a cr

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

• B60K25/02

  directly from an engine shaft · CPC title

• B60L50/66

  Arrangements of batteries · CPC title

• B60L1/003

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