WO2013188888A1 - Procédés et systèmes de gestion de puissance d'un système de réfrigération de transport - Google Patents

Procédés et systèmes de gestion de puissance d'un système de réfrigération de transport Download PDF

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Publication number
WO2013188888A1
WO2013188888A1 PCT/US2013/046201 US2013046201W WO2013188888A1 WO 2013188888 A1 WO2013188888 A1 WO 2013188888A1 US 2013046201 W US2013046201 W US 2013046201W WO 2013188888 A1 WO2013188888 A1 WO 2013188888A1
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WIPO (PCT)
Prior art keywords
unit
transport refrigeration
refrigeration system
battery
transport
Prior art date
Application number
PCT/US2013/046201
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English (en)
Inventor
Sofronio Eduardo Sale TAN
Phillip Morgan ABBOTT
Original Assignee
Thermo King Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thermo King Corporation filed Critical Thermo King Corporation
Publication of WO2013188888A1 publication Critical patent/WO2013188888A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/0065—Control members, e.g. levers or knobs
    • B60H1/00657—Remote control devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/32—Cooling devices
    • B60H1/3204—Cooling devices using compression
    • B60H1/3232—Cooling devices using compression particularly adapted for load transporting vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/20—Refrigerated goods vehicles

Definitions

  • the embodiments disclosed herein relate generally to a transport refrigeration system (TRS). More particularly, the embodiments relate to methods and systems for power management of a TRS. BACKGROUND
  • the embodiments described herein are directed to a TRS.
  • the embodiments described herein are directed to methods and systems for power management of a TRS.
  • the embodiments described herein provide power management of a TRS when a generator set (genset) of the TRS is not running. That is, the embodiments provided herein prevent a Transport Refrigeration Unit (TRU) of the TRS from not starting due to a battery of the TRU being depleted when the genset is not running.
  • the embodiments provided herein also allow a Telematics Unit (TU) of the TRS to obtain telemetry data of the TRS when the TRU is off and provide the telemetry data to a host service when the genset is not running.
  • TRU Transport Refrigeration Unit
  • TU Telematics Unit
  • a method and system for providing power management of a TRS can be started via ignition line sensing and/or battery voltage sensing of a TRU battery.
  • the TU has a backup battery that allows the TRU to still obtain and send telemetry data to a host service when a battery level of a TRU battery is below a minimum threshold for the TRU battery.
  • the TRS when the TRU is turned off and a battery level of the TRU battery is below a minimum threshold for the TRU battery, the TRS is configured to operate in a conservative mode and the TU is configured to notify a host service of the TRU battery level via, for example, an e-mail, a text message, etc.
  • a power management method and system uses hysteresis when switching between different modes of the power management method and system to avoid a ping pong effect.
  • a configurable wakeup time interval for the TU is provided when the TU is off to allow the TU to obtain and send telemetry data to a host service.
  • FIG. 1 illustrates a side perspective view of a temperature controlled container with a transport refrigeration system, according to one embodiment.
  • FIG, 2 illustrates a block diagram of a portion of a TRS, according to one embodiment.
  • FIG. 3 illustrates a state chart of a method and system for power management of the TRS when a genset of the TRS is not running, according to one embodiment.
  • FIG. 4 illustrates a current vs. time graph of a power management method and system of a TRS, according to one embodiment.
  • TRS transport refrigeration system
  • the embodiments described herein are directed to a transport refrigeration system (TRS). More particularly, the embodiments relate to methods and systems for power management of a TRS.
  • References are made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration of the embodiments in which the methods and systems described herein may be practiced.
  • the term “reefer” generally refers to, for example, a temperature controlled trailer, container, or other type of transport unit, etc.
  • transport refrigeration system or “TRS” refers to a refrigeration system for controlling the refrigeration of an in internal space of the reefer.
  • TRS controller refers to an electronic device that is configured to manage, command, direct and regulate the behavior of one or more TRS refrigeration components (e.g., an evaporator, a blower, a heat exchanger, etc.), a genset, etc.
  • TRS refrigeration components e.g., an evaporator, a blower, a heat exchanger, etc.
  • telemetry data refers to data that can include, for example, transport unit temperature data, ambient temperature data, humidity level data within the transport unit, humidity level data outside of the transport unit, TRS set-point data, TRS alarm notification data, geographical location data of the transport unit, fuel level data of the genset, engine speed data of an engine of the genset, operating time data of the genset, etc.
  • the term "host service” refers to, for example, a driver of the transport unit and/or a service center.
  • the host service can be communicated to via a first party telematics communication system that is part of a telematics unit of the TRS or a third party telematics communication system that is separate from the telematics unit of the TRS.
  • the transport refrigeration system may be a vapor-compressor type refrigeration system, or any other suitable refrigeration systems that can use refrigerant, cold plate technology, etc.
  • FIG. 1 illustrates a side view of a temperature controlled container unit 100 with a TRS 110 that includes a TRU 115 connected to a Genset 120.
  • the container unit 100 can be disposed on a ship, on a train or a truck.
  • the TRU 115 is installed on a side wall of the container unit 100.
  • the TRS 110 is configured to transfer heat between an internal space 130 and the outside environment.
  • the TRS 110 is a multi- zone system in which different zones or areas of the internal space 130 are controlled to meet different refrigeration requirements based on the cargo stored in the particular zone.
  • the TRU 115 is positioned adjacent to a front side of the transport unit 100 and is enclosed in a housing 135.
  • the TRU 115 is in communication with the space 130 and controls the temperature in the space 130.
  • the TRU 115 includes a TRS Controller (not shown) and a closed refrigerant circuit (not shown).
  • the TRS Controller controls the refrigeration circuit to obtain various operating conditions (e.g., temperature, humidity, etc.) of the space 130 and is powered by the generator set 120.
  • the TRS Controller can also be powered by a TRU battery and/or a backup battery.
  • the closed refrigerant circuit regulates various operating conditions (e.g., temperature, humidity, etc.) of the space 130 based on instructions received from the TRS controller.
  • the refrigeration circuit can include, for example, an Electronic Throttle Valve (ETV), a compressor coupled to a condenser and an evaporator that cools the space 130 and the perishable cargo.
  • ETV Electronic Throttle Valve
  • the genset 120 generally includes an engine (not shown), a fuel container (not shown) and a generator (not shown).
  • the engine may be an internal combustion engine (e.g., diesel engine, etc.) that may generally have a cooling system (e.g., water or liquid coolant system), an oil lubrication system, an air filtration system (not shown), etc.
  • the air filtration system filters air directed into a combustion chamber (not shown) of the engine.
  • the fuel container is in fluid communication with the engine to deliver a supply of fuel to the engine.
  • the engine is not specifically configured for the TRS 1 10, but can be a non-industrial engine such as, for example, an automotive engine.
  • FIG. 2 illustrates a block diagram of a portion of one embodiment of a TRS 200.
  • the TRS 200 includes a TRU 210, a TU 220 and a genset 230.
  • the TRS 200 also includes a TRU battery 240 and optionally a TU backup battery 250.
  • the TRU 210 includes a TRS controller 260.
  • the TRU 210 using the TRS controller 260, is configured to monitor and regulate various operating conditions (e.g., temperature, humidity, etc.) of an interior space of a transport unit (not shown) connected to the TRU 210.
  • the genset 230 is configured to provide power to the TRU 210 in order to maintain a desired temperature in an interior space of a transport unit. That is, the genset 230 is configured to provide power to the TRU 210 in order to, for example, allow the TRU 210 to regulate various operating conditions (e.g., temperature, humidity, etc.) of the interior space of the transport unit.
  • the TU 220 is connected to the TRS controller 260 and various sensors (not shown) in the TRS 200 such as, for example, one or more door monitoring sensors, one or more transport unit temperature monitoring sensors, one or more ambient temperature monitoring sensors, one or more transport unit humidity level monitoring sensors, ambient humidity level monitoring sensors, one or more alarm notification sensors, a geographical location sensor, one or more fuel monitoring sensors, one or more engine speed data sensors of the genset, an operating timed data of the genset sensor, etc.
  • sensors not shown in the TRS 200 such as, for example, one or more door monitoring sensors, one or more transport unit temperature monitoring sensors, one or more ambient temperature monitoring sensors, one or more transport unit humidity level monitoring sensors, ambient humidity level monitoring sensors, one or more alarm notification sensors, a geographical location sensor, one or more fuel monitoring sensors, one or more engine speed data sensors of the genset, an operating timed data of the genset sensor, etc.
  • the TU 220 is configured to monitor the status of different aspects of the TRS 200 including, for example, a status of different doors on the transport unit, a fuel level of the genset 230, a temperature within the transport unit, an ambient temperature surrounding the transport unit; a humidity level within the transport unit; an ambient humidity surrounding the transport unit; a geographical location of the transport unit; an engine speed data from the genset 230; an alarm notification data etc, to obtain telemetry data of the TRS 200.
  • the TU 220 is also configured to send the telemetry data to a host service such as, for example, a driver of the transport unit and/or a service center.
  • the TU 220 can send the telemetry data to the host service via an e- mail and/or a text message (e.g., a Short Message Service (SMS) text).
  • SMS Short Message Service
  • the TU 220 sends the telemetry data to a remote server (not shown) that provides the telemetry data to the host service via a website.
  • the TU 220 is also connected to and can be powered by the genset 230, the TRU battery 240 and, when provided, the TU backup battery 250. Both the TRU battery 240 and the TU backup battery 250 are connected to the genset 230. Accordingly, when the genset 230 is running, the TRU battery 240 and the TU backup battery 250 can be charged. As described in more detail below, when the genset 230 is not running, the TRU battery 240 and TU backup battery 250 are configured to provide power as required to the TRU 210 and the TU 220.
  • FIG. 3 illustrates a state chart 300 of a method and system for power management of the TRS when a genset of the TRS is not running, according to one embodiment.
  • Power management of the TRS 200 can be activated when the TRU 210 is off by way of ignition line sensing of the genset 230 and/or via instruction commands to verify power status of the TRU 210. Also, power management of the TRS 200 can be activated by voltage level sensing of the TRU battery 240 and/or the TU backup battery 250.
  • the state chart 300 includes different power management modes for the TRS 200 that are controlled by the TU 220.
  • the state chart 300 includes a Full-On Mode 310, a Countdown Mode 320, a Full-Null Mode 330, a Conservative Mode 340, a TUi Mode 350 and a TU Mode 360.
  • the power management embodiments described below can be enabled and/or disabled via the TU 220. When disabled, the TU 220 will switch the TRS 200 directly into the Full-Null Mode 330 when the genset 230 is not running and will keep the TRS 200 in the Full-Null Mode 330 until power management is enabled or the genset 230 is turned on. In some embodiments, power management of the TRS 200 is enabled by default.
  • Each of the modes in the state chart 300 are configured to allow the genset 230 to be started using the TRU battery 240.
  • both the TRU 210 and the TU 220 receive power and all components of the TRU 210 and the TU 220 can operate.
  • the TRS 200 operates in the Full-On Mode 310 when the TRU battery 240, a control area network of the TRS 200 and an ignition feedback line of the TRS 200 are all active and the TRU battery 240 is at or above a minimum threshold battery level to provide power to the TRU 210 and the TU 220 while the genset 23 is not running and allow the TRU battery 240 to start an engine of the genset 230.
  • the minimum threshold battery level for the TRU battery 240 can be, for example, -12.2 volts.
  • the ignition feedback line can indicate when the TRU 210 is ON or OFF.
  • the TU 220 can switch the TRS 200 from the Full-On Mode 310 to the
  • the TU 220 can switch the TRS 200 from the Full-On Mode 310 to the Full-Null Mode 330 when the TRU battery 240 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TRU battery 240, the TRS 200 does not include a TU backup battery 250 or the TU backup battery 250 is below a minimum threshold battery level for the TU backup battery 250, or both a countdown mode counter and a conservative mode counter reach zero.
  • the minimum threshold battery level for the TU backup battery 250 can be, for example, -5.28 volts.
  • the countdown mode counter is a configurable counter that counts down from a configurable countdown mode threshold value C ⁇ each time the countdown mode has been activated.
  • the conservative mode counter is a configurable counter that counts down from a configurable conservative mode threshold value C 2 each time the conservative mode has been activated.
  • the configurable countdown mode threshold value C ⁇ is set to an integer value in a range between, for example, ⁇ 24 to ⁇ 96.
  • the configurable conservative mode threshold value C 2 is set to an integer value in a range between, for example, ⁇ 24 to ⁇ 96.
  • the Countdown Mode 320 is an energy conservation mode that allows the TU 220 to periodically switch to the TUi Mode 350 so that telemetry data can be sent to the host service.
  • the TRS 200 operates in the Countdown Mode 320 when the ignition feedback line and the control area network are both inactive while the TRU battery 240 is active and the battery level of the TRU battery 240 is at or above a minimum threshold battery level to provide power to the TU 220. Even though the control area network is inactive, the TU 220 can be configured to send an echo command to verify the absence of communication between the TU 220 and the TRS Controller 260.
  • the TU can be configured to notify the host service that the TRS 200 is in the Countdown Mode 320 via, for example, an e-mail, a text message, etc.
  • the TU 220 can switch the TRS 200 from the Countdown Mode 320 to the TUi Mode 350 when a power up timer expires, or a status update request is received from the host service via a first party telematics unit service or a third party telematics unit service.
  • the power up timer is configurable and can be set to, for example, about one hour.
  • the TU 220 can switch the TRS 200 from the Countdown Mode 320 back to the Full-On Mode 310 when the ignition feedback line of the TRS 200 is active, and the TRU battery 240 is active and is at or above the minimum threshold battery level for the TRU battery 240.
  • the TU 220 can switch the TRS 200 from the Countdown Mode 320 to the Full-Null Mode 330 when the TRU battery 240 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TRU battery 240, and the TRS 200 does not include a TU backup battery 250 or the TU backup battery 250 is below a minimum threshold battery level for the TU backup battery 250.
  • the TU 220 can switch the TRS 200 from the Countdown Mode 320 to the Conservative Mode 340 when: 1) the ignition feedback line is inactive (thereby indicating that the TRU 210 is OFF), the TRU battery 240 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TRU battery 240 for a set time period (e.g. ⁇ five minutes), and the control area network is inactive; or 2) the countdown mode counter set to a configurable countdown threshold value C reaches zero.
  • the TRU battery 240 is below the minimum threshold battery level for the TRU battery 240 for the set time period hysteresis is provided and a ping pong effect of switching between different power management modes is avoided.
  • the TU 220 powers up to an active state from the
  • Countdown Mode 320 so as to allow the TU 220 to send telemetry data to the host service.
  • all components of the TU 220 can be used and the TU 220 can communicate with the TRS Controller 260 via a control area network CAN, can communicate with sensors (not shown) of the TRS 200 to receive telemetry data, such as, for example, geographic location data, and can report telemetry data to the host service.
  • the TU 220 can switch the TRS 200 from the TUi Mode 350 back to the
  • the power down timer can be set to, for example, about two minutes.
  • the TU 220 can switch the TRS 200 from the TUi Mode 350 to the Full-On Mode 310 when the ignition feedback line of the TRS 200 is active, and the TRU battery 240 is active and is at or above the minimum threshold battery level for the TRU battery 240.
  • the TRS 200 performs a system wide shutdown of the TRU 210 and the TU 220.
  • the genset 230 can still be started using the TRU battery 240 during the Full-Null Mode 330.
  • the TU 220 can switch the TRS 200 from the Full-Null Mode 330 to the Full-On Mode 310 when the ignition feedback line of the TRS 200 is active, and the TRU battery 240 is active and is at or above the minimum threshold battery level for the TRU battery 240.
  • the genset 230 can still be started using the TRU battery 240 during the Full-Null Mode 330.
  • the Conservative Mode 340 is an energy conservation mode that allows the TU 220 to periodically switch to the TU 2 Mode 360 so that telemetry data can be sent to the host service.
  • the TRS 200 operates in the Conservative Mode 340 when the ignition feedback line and the control area network are both inactive, the TRU battery 240 is inactive or the battery level of the TRU battery 240 is below the minimum threshold battery level to provide power to the TU 220, and the TU backup battery 250 is provided and is at or above a minimum threshold battery level for the TU backup battery 250.
  • the TU 220 can switch the TRS 200 from the Conservative Mode 340 to the TU 2 Mode 360 when a power up timer expires, or a status update request is received from the host service via a first party telematics unit service or a third party telematics unit service.
  • the power up timer is configurable and can be set to, for example, about one hour.
  • the TU 220 can switch the TRS 200 from the Conservative Mode 340 back to the Full-On Mode 310 when the ignition feedback line of the TRS 200 is active, and the TRU battery 240 is active and is at or above the minimum threshold battery level for the TRU battery 240.
  • the TU 220 can switch the TRS 200 from the Conservative Mode 340 to the Full-Null Mode 330 when: 1) the TU backup battery 250 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TU backup battery 250 for a set time period (e.g. ⁇ five minutes), the ignition feedback line of the TRS 200 is inactive and the TRU battery 240 is inactive (e.g. disconnected) or below the minimum threshold battery level for the TRU battery 240; or the conservative mode countdown reaches zero.
  • the TU backup battery 250 is below the minimum threshold battery level for the TU backup battery 250 for the set time period hysteresis is provided and a ping pong effect of switching between different power management modes can be avoided.
  • the TU 220 powers up to an active state from the
  • the TU 220 in the TU 2 Mode 360, is configured to only send only geographic location data to the host service.
  • the TU 220 can switch the TRS 200 from the TU 2 Mode 360 back to the Countdown Mode 320 when a power down timer expires.
  • the power down timer can be set to, for example, about two minutes.
  • the TU 220 can switch the TRS 200 from the TU 2 Mode 360 to the Full-On Mode 310 when the ignition feedback line of the TRS 200 is active, and the TRU battery 240 is active and is at or above the minimum threshold battery level for the TRU battery 240.
  • FIG. 4 illustrates a current vs. time graph of the power management method and system of the TRS 200 shown in FIG. 3, according to one embodiment. From time to to time ti the TRS 200 is in the Full-On Mode 310 and a current aj is provided by the TRU battery 240 to the TRU 210 and the TU 220.
  • the TRU 220 switches the TRS 200 to the Countdown Mode 320.
  • the TU 220 can switch the TRS 200 from the Full-On Mode 310 to the Countdown Mode 320 when the ignition feedback line of the TRS 200 and the control area network of the TRS 200 are inactive while the TRU battery 240 remains active and is at or above the minimum threshold battery level for the TRU battery 240.
  • the TRS 200 is in the Countdown Mode 320 and has a current a 2 provided by the TRU battery 240.
  • the TU 220 switches the TRS 200 from the Countdown Mode 320 to the TUi Mode 350 when the power up timer expires at times t 2 and t 4 .
  • the TRS 200 is in the TUi Mode 350, and the TRU battery 240 provides the current ai to operate the TRU 210 and the TU 220.
  • the TU 220 can still obtain and provide telemetry data to a host service when the genset 230 is not running.
  • the TU 220 switches the TRS 200 from the TUi Mode 350 back to the Countdown Mode 320 when the power down timer expires at times t 3 and t 5 .
  • the power up timer is configurable and can be set to, for example, about one hour.
  • the power down timer is configurable and can be set to, for example, about two minutes.
  • the TRU 220 switches the TRS 200 to the Conservative Mode 340.
  • the TU 220 can switch the TRS 200 from the Countdown Mode 320 to the Conservative Mode 340 when: 1) the ignition feedback line is inactive, the TRU battery 240 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TRU battery 240 for a set time period (e.g. ⁇ five minutes), and the control area network is inactive; or 2) the countdown mode counter reaches zero.
  • the TRS 200 is in the Conservative Mode 340 and has a current a 3 provided by the TRU battery 240.
  • the TRU 210 and the TU 220 are configured to draw no more than the current a 3 from the TU backup battery 240.
  • the current a 3 is -24 mA.
  • the TU 220 switches the TRS 200 from the Conservative Mode 340 to the TU 2 Mode 360 when the power up timer expires at time t 7 .
  • the TRS 200 is in the TU 2 Mode 360, and the TU backup battery 250 provides the current a 4 to operate the TRU 210 and the TU 220. Accordingly, the TU 220 can still obtain and provide telemetry data to a host service when the genset 230 is not running and the TRU battery 240 is depleted.
  • the TU 220 switches the TRS 200 from the TU 2 Mode 360 back to the Conservative Mode 340 when the power down timer expires at time t 8 .
  • the power up timer is configurable and can be set to, for example, about one hour. In some embodiments, the power down timer is configurable and can be set to, for example, about two minutes.
  • the TRU 220 switches the TRS 200 to the Full-Null Mode 330.
  • the TU 220 can switch the TRS 200 from the Conservative Mode 340 to the Full-Null Mode 330 when: 1) the TU backup battery 250 is not active (e.g., disconnected) or is below the minimum threshold battery level for the TU backup battery 250 for a set time period (e.g. ⁇ five minutes), the ignition feedback line of the TRS 200 is inactive and the TRU battery 240 is inactive (e.g. disconnected) or below the minimum threshold battery level for the TRU battery 240; or the conservative mode counter reaches zero.
  • the TRU 210 and the TU 220 are powered off and a current a 5 is provided to allow the TU 220 to control the TRS 200 in case an instruction is received to start the genset 230, or an instruction is received to switch the TRS 200 from the Full-Null Node 330 to another power management mode.
  • a method for power management of a transport refrigeration system comprising: operating the transport refrigeration system in a first energy conservation mode, whereby a telematics unit of the transport refrigeration system and a generator set of the transport refrigeration system are powered off and a transport refrigeration unit battery of the transport refrigeration system provides a first current, when a battery level of the transport refrigeration unit battery is above a minimum threshold battery level, the first energy conservation mode including:
  • the transport refrigeration system in a first telemetry unit status update mode, whereby the telematics unit is powered on, when at least one of a first power up timer expires and a status update request is received from a host service, the first telemetry unit status update mode including:
  • the first telemetry unit status update mode also including: activating the control area network;
  • the telemetry data includes one or more of a status of a door of a transport unit of the transport refrigeration system, a fuel level of the generator set, a temperature within the transport unit, an ambient temperature
  • a humidity level within the transport unit a humidity level within the transport unit, an ambient humidity surrounding the transport unit, a geographical location of the transport unit, and an engine speed data of the engine of the generator set.
  • the transport refrigeration system in a second energy conservation mode, whereby a telematics unit of the transport refrigeration system and a generator set of the transport refrigeration system are powered off and a telematics unit backup battery of the transport refrigeration system provides a second current greater than the first current, when a battery level of the transport refrigeration unit battery is below the minimum threshold battery level, the second energy conservation mode including:
  • the transport refrigeration system in a second telemetry unit status update mode, whereby the telematics unit is powered on, when at least one of a second power up timer expires and the status update request is received from the host service, the second telemetry unit status update mode including:
  • the second telemetry unit status update mode also including:
  • refrigeration system is not active and a battery level of the telematics unit backup battery is below a second minimum threshold battery level
  • At least one of the transport refrigeration unit battery is not active and the battery level of the transport refrigeration unit battery is below the minimum threshold battery level.
  • the full on mode including:
  • a transport refrigeration system comprising:
  • a transport refrigeration unit including a transport refrigeration system controller and a refrigeration circuit, wherein the transport refrigeration system controller is configured to regulate an operating condition of an interior space of a transport unit of the transport refrigeration system;
  • a telematics unit connected to the transport refrigeration system controller, the telematics unit configured to generate telemetry data based on an operating condition status of the transport refrigeration system;
  • a generator set connected to the transport refrigeration unit and the telematics unit, the generator set includes an engine, and the generator set is configured to provide power to the transport refrigeration unit and the telematics unit;
  • transport refrigeration unit battery connected to the transport refrigeration unit, the telematics unit and the generator set, wherein the transport refrigeration unit battery is configured to provide power to the transport refrigeration unit and the telematics unit when the generator set is not running;
  • the telematics unit is further configured to control a power management mode of the transport refrigeration system based on a battery level of the transport refrigeration unit battery when the generator set is not running.
  • the telematics unit is configured to generate the telemetry data based on the operation condition status of at least one of a door of a transport unit of the transport refrigeration system, a fuel level of the generator set, a temperature within the transport unit, an ambient temperature surrounding the transport unit, a humidity level within the transport unit, an ambient humidity surrounding the transport unit, a geographical location of the transport unit, and an engine speed data of the engine of the generator set.
  • the telematics unit is configured to send the telemetry data to a host service via at least one of an e-mail and a short message service text.
  • the generator set is configured to charge the telematics unit backup battery when the generator set is running.

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  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
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Abstract

L'invention concerne des systèmes et des procédés permettant la gestion de la puissance d'un système de réfrigération de transport (TRS). En particulier, l'invention concerne des procédés et des systèmes pour la gestion de la puissance d'un TRS lorsqu'un ensemble générateur (genset) du TRS ne fonctionne pas. Le TRS comprend une unité télématique (TU) configurée pour commander la gestion de puissance du TRS lorsque le genset ne fonctionne pas. La TU est également configurée de façon à obtenir des données de télémétrie du TRS lorsque la TRU est éteinte, et à fournir les données de télémétrie à un service d'hôte lorsque le genset ne fonctionne pas.
PCT/US2013/046201 2012-06-14 2013-06-17 Procédés et systèmes de gestion de puissance d'un système de réfrigération de transport WO2013188888A1 (fr)

Applications Claiming Priority (2)

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US201261659685P 2012-06-14 2012-06-14
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