Exit protection system and methods for preventing exit

Abstract

A method for preventing a refrigerated transport unit from driving away includes: detecting whether a power system of the refrigerated transport unit is electrically connected to a utility power source, and performing an action when the power system is electrically connected to the utility power source. A drive-away protection system includes a refrigerated transport unit, the refrigerated transport unit including a power system and a controller that monitors the power system. The controller is configured to perform an action when the power system is electrically connected to the refrigerated transport unit.

Description

Technical Field

[0001] The present disclosure generally relates to transport climate control systems. More specifically, the present disclosure relates to a transport climate control system configured to utilize external power from a utility power source while a refrigerated transport unit utilizing the transport climate control system is parked. Background Art

[0002] Transport climate control systems are typically used to control environmental conditions (e.g., temperature, humidity, air quality, and the like) within a transport unit (e.g., a container (such as a container on a flat car, an intermodal container, etc.), a truck, a boxcar, or other similar transport unit). Refrigerated transport units are typically used to transport perishable items such as produce, frozen foods, and meat products. Typically, a refrigerated transport unit includes a transport unit and a transport climate control system.

[0003] A transport climate control system includes a transport refrigeration unit (TRU) that is attached to a transport unit to control one or more environmental conditions (e.g., temperature, humidity, atmosphere, etc.) of a particular space (e.g., cargo space, passenger space, etc.) (commonly referred to as the "interior space"). The TRU may include, without limitation: a compressor, a condenser, an expansion valve, an evaporator, a fan, and / or a blower to control heat exchange between air inside the interior space and ambient air outside the refrigerated transport unit. Summary of the invention

[0004] The present application is directed to systems and methods for preventing a refrigerated transport unit from being driven away while the refrigerated transport unit is connected to a utility power source.

[0005] In an embodiment, a refrigerated transport unit includes: a transport climate control system; a transport unit having an interior space for storing cargo to be climate controlled during transport; and a power system. The transport climate control system may include a transport refrigeration unit (TRU) to condition the interior space. The power system is configured to receive external power from a utility power source and provide power to the transport climate control system.

[0006] In an embodiment, a method for preventing a refrigerated transport unit from driving away includes detecting whether a power system of the refrigerated transport unit is connected to a utility power source. The method also includes performing an action when the power system is electrically connected to the utility power source.

[0007] In an embodiment, the method further comprises: generating instructions to prevent the refrigerated transport unit from moving while the power system is connected to a utility power source. The instructions are generated when the power system is connected to a utility power source. The method further comprises sending instructions to the tractor when the tractor is attached to the refrigerated transport unit. The instructions are configured to prevent the refrigerated transport unit from moving while the power system of the refrigerated transport unit is connected to a utility power source.

[0008] In an embodiment, a drive-off protection system includes a refrigerated transport unit. The refrigerated transport unit includes: a transport unit having an interior space for storing cargo; a transport climate control system configured to control environmental conditions of the interior space; a power system; and a controller. The power system is configured to receive external power (e.g., from a utility power source) and provide power to the transport climate control system. The controller monitors the power system and is configured to perform an action when the power system is electrically connected to the utility power source.

[0009] In an embodiment, the controller is configured to generate instructions when the power system is connected to a utility power source. The instructions are configured to prevent the refrigerated transport unit from moving while the power system is connected to a utility power source.

[0010] In an embodiment, the drive-off protection system includes a tractor attached to the refrigerated transport unit. A controller of the refrigerated transport unit is configured to send instructions to the tractor, and the instructions are configured to prevent the tractor from moving while the power system is electrically connected to a utility power source.

[0011] In an embodiment, the power system of the transport refrigeration unit is connected to the utility power source through a physical connection. In another embodiment, the power system of the refrigerated transport unit is connected to the utility power source through a wireless connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Reference is made to the accompanying drawings which form a part of this disclosure and which illustrate embodiments in which the methods and systems for preventing run-off of refrigerated transport units described herein may be practiced.

[0013] Figure 1 is a perspective view of a refrigerated transport unit and a tractor according to an embodiment;

[0014] Figure 2 is a side perspective view of two refrigerated transport units parked at a docking port according to an embodiment;

[0015] Figure 3 is a schematic diagram of a run-off protection system according to an embodiment;

[0016] Figure 4 is a flow chart of a method for preventing a refrigerated transport unit from driving away according to a first embodiment;

[0017] Figure 5 is a flow chart of a method for preventing a refrigerated transport unit from driving away according to a second embodiment;

[0018] Figure 6 is a flow chart of a method for preventing a refrigerated transport unit from driving away according to a third embodiment;

[0019] Figure 7 is a flow chart of a method for preventing a refrigerated transport unit from driving away according to a fourth embodiment;

[0020] Figure 8 is a flow chart of a method for preventing a refrigerated transport unit from driving away according to a fifth embodiment.

[0021] Similar numbers always indicate similar characteristics. DETAILED DESCRIPTION

[0022] The refrigerated transport unit includes: a transport unit having an interior space for storing cargo; a transport climate control system for providing climate control of the interior space; and a power system. The refrigerated transport unit is moved between locations by a tractor attached to the refrigerated transport unit. The power system supplies power to electrical components of the transport climate control system. When parked, the power system is configured to receive external power from a utility power source. However, the tractor can tow the refrigerated transport unit away while the power system of the refrigerated transport unit is still physically connected to the external power source. This may result in damage to the refrigerated transport unit and / or the utility power source.

[0023] Embodiments described herein are directed to refrigerated transport units, drive-off protection systems, and methods for preventing drive-off of refrigerated transport units. Embodiments described herein are configured to prevent refrigerated transport unit(s) from being towed away while the refrigerated transport unit(s) are still physically connected to a utility power source. In some embodiments, instructions are generated to prevent movement of the refrigerated transport unit(s) when a power system of a transport climate control system is connected to a utility power source.

[0024] Figure 1 is a perspective view of a refrigerated transport unit 1 and a tractor 3. The refrigerated transport unit 1 includes a transport climate control system (TCCS) 2 and a transport unit 10. The TCCS 2 includes a transport refrigeration unit ("TRU") 50. The transport unit 10 includes an interior space 15 for storing cargo and wheels 40 for moving the transport unit 10 along the ground. The transport unit 10 includes a braking system 42 for the wheels 40. When activated, the braking system 42 is configured to prevent the wheels 40 from rotating and prevent the transport unit 10 from moving. It will be understood that in some embodiments, the transport unit 10 can be a container located on a chassis, where the braking system 42 and the wheels 40 are part of the chassis.

[0025] The TRU 50 is configured to condition (e.g., provide temperature control, humidity control, air quality control, etc.) the interior space 15 of the transport unit 10. For example, the TRU 50 can maintain the interior space 15 of the transport unit 10 at or within a desired temperature and / or humidity to prevent the cargo in the interior space 15 from being damaged or deteriorating. The TRU 50 is attached to Figure 1 However, in other embodiments, the TRU 50 may be attached to the top 25 or a different side of the transport unit 10.

[0026] The refrigerated transport unit 1 includes a programmable controller 55 and a battery pack 35. The controller 55 may be a single integrated control unit, or a control unit formed by a distributed network of control elements 55, 60. In an embodiment, the controller 55 may be disposed in the TRU 50 and its components and / or configured to operate the TRU 50 and its components. The battery pack 35 is configured to store power and supply power to one or more components of the refrigerated transport unit 1. For example, the battery pack 35 may provide power for operating the TRU 50 and / or the controller 55. The battery pack 35 is disposed in a Figure 1 However, in other embodiments, the battery pack 35 may be disposed outside the transport unit 10 and / or within the TRU 50.

[0027] like Figure 1 As shown, the transport unit 10 is configured to be attached and moved by a tractor 3. The tractor 3 is attached to the transport unit 10 of the refrigerated transport unit 1 and tows the refrigerated transport unit 1 while transporting. The tractor 3 includes wheels 4, a programmable controller 5, a prime mover 6, and a braking system 7. The controller 5 can be a single integrated unit or a network of control elements, such as the similar discussion about the controller 55 of the refrigerated transport unit 1. The controller 5 is configured to control the operation of the tractor 3 including the prime mover 6 and the braking system 7. In an embodiment, the prime mover 6 is a diesel engine. The braking system 7 is configured to stop and / or prevent the wheels 4 from rotating. The tractor 3 may optionally include a battery pack 8. For example, in an embodiment, the tractor 3 may be an electric vehicle or a hybrid vehicle, and the prime mover 6 may be or include an electric motor powered by the battery pack 8.

[0028] Figure 1 The tractor 3 in the figure is a road tractor. However, it should be understood that the tractor 3 can be a different type of vehicle configured to tow the refrigerated transport unit 1. For example, in an embodiment, the tractor 3 can be a yard tractor, a drone, or other types of vehicles configured to tow the refrigerated transport unit 1 between different locations.

[0029] Figure 2 is a side perspective view of the front refrigerated transport unit 110 , the rear refrigerated transport unit 120 , and the docking port 130 . Figure 2 Each refrigerated transport unit 110, 120 in the embodiment has a similar configuration to the refrigerated transport unit 1 discussed above, except that the rear refrigerated transport unit 120 is directly attached to the front refrigerated transport unit 110, rather than being attached to a tractor (e.g., Figure 1 In the tractor 3, the transport unit 122 of the rear refrigerated transport unit 120 includes a front wheel pair 114. Figure 2 1, the front wheel pair 114 is directly attached to the transport unit 122. However, in other embodiments, the front wheel pair 114 may be part of a dolly (not shown) that is attached to the transport unit 122. In an embodiment, the dolly may provide the front wheel pair 114 and may be used to attach the rear refrigerated transport unit 120 to the front refrigerated transport unit 110.

[0030] The transport unit 122 is parked at the docking port 130. For example, the docking port 130 may be a facility (e.g., a warehouse, a building, etc.) for unloading cargo from the transport unit and / or for parking the transport unit. In an embodiment, the docking port 130 may be a charging station for charging the parked refrigerated transport unit. In such an embodiment, the charging station may include a power source (e.g., a utility power source 260) for providing external power to the docking port 130. For example, the docking port 130 may be a site for parking and charging the refrigerated transport units 110, 120. The docking port 130 includes an attachment arm 135. The attachment arm 135 is configured to attach the transport unit 122 to the docking port 130 when engaged. When engaged, the attachment arm 135 is configured to prevent the attached transport unit 122 from leaving the docking port 130. In an embodiment, the attachment arm 135 may be a different type of restriction device configured to prevent the refrigerated transport unit from leaving the docking port 130. For example, the attachment arm 135 may include a restraining device that is located on and / or in the ground near the docking port 130 and physically restrains the movement of the refrigerated transport unit.

[0031] Figure 3 2 is a schematic diagram of a drive-away protection system 200 and a utility power source 260. The drive-away protection system 200 includes a refrigerated transport unit 205 (e.g., Figure 1 refrigeration transport unit 1) and a tractor attached to the refrigerated transport unit 205 (e.g., Figure 1 3). The refrigerated transport unit 205 has an electrical system 210. The electrical system 210 includes a battery pack 215, a controller 220, a compressor 225, and a fan (or fans) 230. For example, the compressor 225 may be provided in the TRU (e.g., Figure 150) in the TRU and is configured to compress the working fluid in the fluid circuit (not shown) of the TRU. It should be understood that, in addition to Figure 3 The power system 210 may include additional or other electrically powered components for the refrigerated transport unit beyond those shown in FIG.

[0032] The power system 210 may optionally include a prime mover 235 and a generator 240. For example, when the refrigerated transport unit 205 is a hybrid refrigerated transport unit powered by both the battery pack 215 and the prime mover 235, the power system 210 may include the prime mover 235 and the generator 240.

[0033] The prime mover 235 may be, for example, a diesel engine or other type of internal combustion engine, a compressed natural gas engine, etc. In an embodiment, the prime mover 235 is disposed in a TRU (e.g., Figure 1 The generator 240 is configured to receive mechanical power from the prime mover 235 and generate electrical energy. For example, the motor 240 can be and / or include an induction motor (eg, an asynchronous induction motor), a motor, etc.

[0034] The power system 210 is configured to provide power to the controller 220, the compressor 225, and the fan(s) 230. In an embodiment, the power system 210 may also provide power to other electrical components of the TRU. The power system 210 is also configured to provide power to the battery pack 215 when the battery pack 215 needs to be charged.

[0035] When not being transported, the refrigerated transport unit 205 can be parked in a facility (e.g., a building, warehouse, charging station, Figure 2 For example, the utility power source 260 may be a power grid or a generator of a facility (e.g., Figure 2The external power provided by the utility power source 260 may be in the form of DC power or AC power. In an embodiment, the power system 210 may include a power converter (not shown) to convert the AC power provided by the utility power source 260 into DC power for use by specific electrical components of the power system (e.g., charging the battery pack 215, etc.). In another embodiment, the utility power source 260 may be a charging station configured to convert AC utility power to provide DC power. The power system 210 is configured to receive external power from the utility power source 260. The power system 210 includes a socket 245, and an external wire 265 for the utility power source 260 is physically connected to the socket 245 to electrically connect the power system 210 and the utility power source 260. In an embodiment, when parked at a facility including the utility power source 260, the external wire 265 may be automatically connected to the refrigerated transport unit 205. For example, the utility power source 260 facility may detect whether the refrigerated transport unit 205 is parked at the facility and be configured to physically attach the external wire 265 to the receptacle 245 .

[0036] The controller 220 monitors the power system 210. In particular, the controller 220 is configured to detect whether the power system 210 is electrically connected to the utility power source 260. In an embodiment, the controller 220 detects whether power is supplied to the power system 210 from the utility power source 260. For example, the controller may utilize a sensor 222 to detect whether power (e.g., current, voltage, etc.) is being supplied to the power system 210 from an external power source. In an embodiment, the controller 220 detects whether the wire 265 is physically connected to the socket 245 to determine whether the power system 210 is electrically connected to the utility power source 260.

[0037] The controller is electrically connected to the brake system 250, the speaker 252, and the telematics unit 254 of the refrigerated transport unit 205. The speaker 252 is disposed on the exterior of the transport unit of the refrigerated transport unit 205. The controller 220 can operate the speaker 252 to produce a sound (e.g., a warning, a message, etc.). The brake system 250 is configured to prevent the wheels of the transport unit of the refrigerated transport unit 205 (e.g., Figure 1 The wheel 40 in the vehicle rotates. The telematics unit 254 wirelessly transmits the information to a remote server and / or facility. Figure 3 The speaker 252 and telematics unit 254 are disposed within the refrigerated transport unit 205. However, in an embodiment, the speaker 252 and / or telematics unit 254 may be disposed in an attached tractor 270.

[0038] The controller 220 is configured to communicate with the tractor 270. More specifically, the controller 220 communicates with a controller 272 of the tractor 270. The controller 272 controls the operation of the tractor including a brake system 276, a prime mover 274, and warning lights of the tractor 270. The brake system 276 and the prime mover 274 are similar to those described above with respect to Figure 1 The brake system 7 and prime mover 6 discussed above for the tractor 3 in FIG. 2 are provided with a warning light 278 within the tractor 270 and configured to warn an operator in the tractor 270 that the attached refrigerated transport unit is electrically connected to the utility power source 260. In an embodiment, the warning light 278 may be provided on the exterior of the tractor 3 and configured to warn nearby personnel, including the operator. Figure 1 As discussed similarly with respect to tractor 3 in FIG. 1 , tractor 270 may optionally include a battery pack 279. When tractor 270 includes a battery pack 279, tractor 270 may be configured to use Figure 3 A utility power source 260 is shown charging a battery pack 279 .

[0039] The controller 220 is also configured to interface with a docking port 280 (eg, Figure 2 When engaged, the attachment arm 285 is configured to physically restrict the refrigerated transport unit 205 from leaving the docking port 280, as described with respect to Figure 2 The controller 220 is configured to communicate with the docking port 280 regarding the engagement of the attachment arm 285. For example, the controller 220 can activate the docking port 280 to engage and / or disengage the attachment arm 285.

[0040] Figure 3 The utility power source 260 in the refrigerated transport unit 205 is separate from the docking port 280. However, in some embodiments, the utility power source 260 can be part of the docking port 280. In an embodiment, the docking port 280 can be a charging station including an attachment arm 285. In such an embodiment, an external wire 265 can extend from the docking port 280 to the refrigerated transport unit 205 to provide external power to the power system 210 of the refrigerated transport unit.

[0041] The refrigerated transport unit 205 may include components that require pressurized air to operate. For example, the brake system 250 may require pressurized air to operate. The refrigerated transport unit 205 may also include an air system 290 to provide pressurized air to components that utilize pressurized air (e.g., brake system, etc.). The air system 290 receives its pressurized air from the tractor 270 through a pressurized air line 292. When the tractor 270 is attached to the refrigerated transport unit 205, the pressurized air line 292 is connected to the air system 290 of the refrigerated transport unit 205, and the air system is pressurized. Therefore, when the tractor is attached to the refrigerated transport unit 205, the pressure of the air system 290 increases. A pressure sensor 294 is connected to the air system 290. The controller 220 of the refrigerated transport unit 205 is configured to detect the pressure of the air system 290. More specifically, the controller 220 uses the pressure sensor 294 to determine the pressure of the air system 290. Controller 220 may determine that tractor 270 is attached to refrigerated transport unit 205 based on the pressure of air system 290. For example, tractor 270 is attached to refrigerated transport unit 205 when air system 290 has a pressure higher than a predetermined pressure (e.g., atmospheric pressure, a pressure lower than the normal pressure of air system 290 when pressurized, etc.).

[0042] Figure 3 The drive-off protection system 200 further includes a second refrigerated transport unit 305 (eg, Figure 2 Refrigerated transport unit 120 in FIG. 30). Refrigerated transport unit 305 is attached to a refrigerated transport unit similar to Figure 2 The first refrigerated transport unit 205 of the rear refrigerated transport unit 120 and the front refrigerated transport unit 110 in FIG. The second refrigerated transport unit 305 has a similar configuration to the first refrigerated transport unit 205. For example, the second refrigerated transport unit 305 includes a power system 310 having a battery pack 315, a controller 320, a compressor 325, a fan (multiple) 330, and optionally a prime mover 335 and a generator 340. The controller 320 is also connected to the corresponding telematics unit 354, the speaker 352, and the brake system 350 of the refrigerated transport unit 305.

[0043] The power system 310 is configured to receive power from the utility power source 260. The power system 310 includes a socket 345, and an external wire 267 for the utility power source 260 is physically connected to the socket 345.

[0044] In a manner similar to the controller 220 and the power system 210, the controller 320 is configured to detect whether the power system 310 of the second refrigerated transport unit 305 is electrically connected to the utility power 260. The controller 320 is also configured to communicate with the controller 220. In particular, the controller 320 is configured to communicate with the controller 220 when the power system 310 of the second refrigerated transport unit 305 is electrically connected to the utility power 260.

[0045] The communication line 207 from the refrigerated transport unit 205 to the tractor 270 and the communication line 209 between the refrigerated transport units 205 and 305 are power communication lines. For example, information is transmitted through the communication lines 207 and 209 in a manner similar to the Antilock Braking System (ABS) communication between modules of the ABS. However, in an embodiment, the communication lines 207 and 209 may be different from power line communication. In an embodiment, the communication lines 207 and 209 may utilize other types of non-powered communication lines for communication between the tractor 270 and the transport refrigeration units 205 and 305. The non-powered communication lines may include, but are not limited to, Controller Area Network (CAN) communication lines and Local Internet Network (LIN) communication lines. In an embodiment, the communication lines 207 and 209 may be wireless communications.

[0046] Figure 3 The drive-away protection system 200 in the embodiment includes two refrigerated transport units 205, 305. However, it should be understood that the drive-away protection system 300 in the embodiment can have a different number of refrigerated transport units 205, 305 compared to two. In an embodiment, the drive-away protection system 200 can include one or more refrigerated transport units 205, 305. In an embodiment, the drive-away protection system 200 can include a single refrigerated transport unit 205. In another embodiment, the drive-away protection system 200 can include three refrigerated transport units 205, 305. For example, a third refrigerated transport unit can be attached to the second refrigerated transport unit 305, and the controller of the third refrigerated transport unit can be configured to communicate with the controller 320 of the second refrigerated transport unit 305.

[0047] Figure 4 is a flow chart of a method 400 for preventing a refrigerated transport unit (eg, refrigerated transport unit 1, refrigerated transport unit 110) from driving away according to the first embodiment. In an embodiment, the method 400 may be Figure 3 The run-off protection system 200 in FIG. 4 is adopted. The method 400 starts at 405 .

[0048] At 405, a controller (e.g., controller 55, controller 220) detects whether the power system (e.g., power system 210) is electrically connected to a utility power source (e.g., utility power source 260). The electrical connection in an embodiment may be a physical connection (e.g., a connection using an external wire). In other embodiments, the electrical connection may be a wireless connection between the refrigerated transport unit and the utility power source. In an embodiment, the controller determines whether the power system is electrically connected to the utility power source based on the external power supplied to the power system. In such an embodiment, this may include sensing whether a current is being supplied from a socket (e.g., socket 245, socket 345) of the power system, which current is used to provide power to the power system from the utility power source (e.g., utility power source 260). For example, a sensor (e.g., sensor 222) may be used to sense whether a current is being supplied from a socket. In another embodiment, 405 may include sensing a physical connection between a socket and an external wire (e.g., external wire 265) for the utility power source. Then, method 400 proceeds to 410.

[0049] At 410, if the power system is not electrically connected to a utility power source, then method 400 proceeds back to 405. If the power system is electrically connected to a utility power source, then method 400 then optionally proceeds to 415 or directly to 420.

[0050] At optional 415 , the pressure of the air system (eg, air system 290 ) of the refrigerated transport unit is detected. For example, the controller may utilize a pressure sensor (eg, pressure sensor 294 ) to detect the pressure of the air system. Then, method 400 proceeds to 417 .

[0051] At optional 417, if the pressure of the air system is above a predetermined pressure, the method proceeds to 420. As described above, when the tractor is attached to the refrigerated transport unit, the air system is pressurized. In an embodiment, the predetermined pressure is a pressure indicating that the air system is connected to the tractor. For example, the predetermined pressure can be atmospheric pressure, a pressure that is lower than the normal pressure of the air system 290 when pressurized, etc. If the pressure of the air system is at or below the predetermined pressure, the method 400 proceeds back to 405.

[0052] At 420, the controller performs an action based on the refrigerated transport unit being electrically connected to a utility power source. For example, the controller's actions may include, but are not limited to, generating instructions to prevent the refrigerated transport unit from moving 430 and / or reporting information about the transport unit 480, such as Figure 4 However, each of 430 and 480 is an example of an action based on the refrigerated transport unit being electrically connected to the utility power source 420. Accordingly, in an embodiment, based on Figure 4The refrigerated transport unit in the embodiment of the present invention is electrically connected to the utility power source 420 to perform the actions may not include one or both of 430 or 480. In another embodiment, the method 400 may include one of 430 and 480. Figure 4 430 and 480 are shown as occurring simultaneously. However, it should be understood that in some embodiments, 430 and 480 may occur sequentially, with 430 being performed before 480 or after 480.

[0053] At 430, the controller generates an instruction to prevent the refrigerated transport unit from moving. The instruction is configured to prevent the refrigerated transport unit from moving while the power system of the refrigerated transport unit is electrically connected to a utility power source. In an embodiment, the instruction can be configured to make the refrigerated transport unit more difficult to move, affect the operation of a tractor (e.g., tractor 3, tractor 270) attached to the refrigerated transport unit, and / or provide a warning to nearby personnel. For example, the instruction can make the refrigerated transport unit more difficult to move by activating a braking system (e.g., braking system 42, braking system 250) of the refrigerated transport unit.

[0054] At 480, the controller reports information about the refrigerated transport unit. In an embodiment, the reporting of the information is stored in the controller of the refrigerated transport unit (e.g., in a memory of the controller). In another embodiment, the information is reported to the exterior of the refrigerated transport unit using a telematics unit (e.g., telematics unit 254). The telematics unit may be a telematics unit disposed in the refrigerated transport unit, a second refrigerated transport unit attached to the refrigerated transport unit (e.g., refrigerated transport unit 120, refrigerated transport unit 305), or a tractor attached to the refrigerated transport unit (e.g., tractor 3, tractor 270).

[0055] In an embodiment, 480 may include reporting that the refrigerated transport unit was moved while the power system was connected to a utility power source. As described above, towing the refrigerated transport unit away while the refrigerated transport unit was physically connected to a utility power source may result in damage to the refrigerated transport unit or the utility power source. For example, the refrigerated transport unit was moved while connected to a utility power source may be used to determine when damage occurred due to moving the refrigerated transport unit while the refrigerated transport unit was still physically connected to a utility power source.

[0056] In an embodiment, 480 may include: reporting the following to the outside of the refrigerated transport unit: the refrigerated transport unit is electrically connected to a utility power source and the tractor is attached to the refrigerated transport unit. In an embodiment, this may be reported to a facility (e.g., a site, a night parking location, etc.) where the refrigerated transport unit is parked. For example, the site facility may include an operator, a server, and / or a computer configured to monitor operations within the site. When the refrigerated transport unit is physically electrically connected to a utility power source, and / or when a battery pack (e.g., battery pack 215) is still charging or needs to be charged (e.g., below a predetermined amount), the operator, server, and / or computer may remotely deactivate the attached tractor to prevent the refrigerated transport unit from moving. Method 400 then proceeds back to 405.

[0057] Figure 5 is a flow chart of a method 500 for preventing a refrigerated transport unit (eg, refrigerated transport unit 1, refrigerated transport unit 110) from driving away according to the second embodiment. In an embodiment, the method 500 may be Figure 3 The run-off protection system 200 in FIG.

[0058] At 505, a controller (eg, controller 55, controller 220) detects whether a power system (eg, power system 210) is electrically connected to a utility power source (eg, utility power source 260). In an embodiment, 505 may be similar to Figure 4 Then, the method 500 proceeds to 510 .

[0059] At 510, if the power system is not electrically connected to a utility power source, method 500 proceeds back to 505. If the power system is electrically connected to a utility power source, method 500 proceeds to 530.

[0060] At 530, the controller generates instructions to prevent the refrigerated transport unit from moving. The instructions are configured to prevent the refrigerated transport unit from moving while the refrigerated transport unit is electrically connected to a utility power source. In an embodiment, 530 is similar to Figure 4 Then, method 500 proceeds to 540 .

[0061] At 540, the instructions are sent to the exterior of the refrigerated transport unit. This may include 542, 544, 546. In an embodiment, the controller of the refrigerated transport unit is configured to send the instructions to the exterior of the refrigerated transport unit. Each of 542, 544, and 546 is an example of sending the instructions to the exterior of the refrigerated transport unit. 542, 544, and 546 are shown as occurring simultaneously. However, it should be understood that in other embodiments, one or more of the sending 542, 544, 546 may occur sequentially.

[0062] At 542, instructions are sent to a tractor (e.g., tractor 3, tractor 270) attached to the refrigerated transport unit. For example, the instructions may be sent to a controller (e.g., controller 5, controller 272) of the tractor. Information from the refrigerated transport unit to the tractor may be transmitted via a power communication line (e.g., power communication line 207). For example, information may be transmitted in a manner similar to ABS communication. In an embodiment, information may be transmitted via a non-powered type of communication line (e.g., a CAN communication line, a LIN communication line, etc.) used for communication between the refrigerated transport unit and the tractor. In another embodiment, the instructions may be sent wirelessly to the tractor.

[0063] The instructions are configured to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit. In an embodiment, the instructions may be configured to prevent the tractor from moving by activating the brake system of the tractor (e.g., brake system 7, brake system 276). For example, the instructions may start the controller of the tractor to activate the brake system of the tractor. In an embodiment, the instructions may be configured to prevent the prime mover (e.g., prime mover 6, prime mover 274) from providing movement to the tractor while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit. For example, the instructions may start the controller of the tractor to deactivate the transmission of the prime mover or shut down the prime mover of the tractor while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit. For example, the instructions may be configured to disconnect the ignition circuit of the prime mover. In an embodiment, the instructions may use a relay in the tractor to deactivate the ignition circuit. In an embodiment, the prime mover may include a remote controller configured to deactivate the ignition, and the instructions may be sent to the remote controller and the remote controller may be activated to deactivate the ignition.

[0064] At 544, instructions are sent to a second refrigerated transport unit (e.g., refrigerated transport unit 120, refrigerated transport unit 305). The instructions may be configured to prevent the second refrigerated transport unit from moving while the power system of the first refrigerated transport unit is electrically connected to the utility power source. Figure 3 As discussed, information from the first refrigerated transport unit to the second refrigerated transport unit can be transmitted as power line information. For example, the communication can be transmitted in a manner similar to ABS communication. In another embodiment, instructions can be sent wirelessly from the first refrigerated transport unit to the second refrigerated transport unit. In an embodiment, the second refrigerated transport unit can be attached to the tractor in place of the first refrigerated transport unit. In such an embodiment, the first refrigerated transport unit can send instructions to the second refrigerated transport unit, and the second refrigerated transport unit can then send instructions to the tractor to prevent the tractor from moving, as discussed above with respect to 542.

[0065] At 546, instructions are sent to the docking port (e.g., docking port 130, docking port 280). The docking port includes an attachment arm (e.g., attachment arm 135, attachment arm 285) configured to physically restrain the refrigerated transport unit. In an embodiment, the attachment arm is configured to attach the docking port and a transport unit (e.g., transport unit 122) of the refrigerated transport unit. In another embodiment, the attachment arm is attached to the ground near the docking port and is configured to physically restrain the transport unit from leaving the docking port. When engaged, the attachment arm is attached to the refrigerated transport unit and is configured to prevent the refrigerated transport unit from leaving the docking port. The instructions are configured to prevent the attachment arm from disengaging while the power system of the refrigerated transport unit is electrically connected to the utility power supply. For example, the instructions tell the docking port to keep the attachment arm engaged while the power system of the refrigerated transport unit is electrically connected to the utility power supply. After 542, 544, and 546, method 500 returns to 505.

[0066] Figure 5 The method 500 in includes sending instructions to an attached tractor 542, sending instructions to a second refrigerated transport unit 544, and sending instructions to a docking port 546. However, each of 542, 544, and 546 is an example of sending instructions to the exterior 540 of the refrigerated transport unit. Accordingly, in an embodiment, in Figure 5 The sending of the instruction to the outside of the refrigerated transport unit 530 may not include any of 542, 544, or 546. In another embodiment, the method 500 may include one or more of 542, 544, and 546. In an embodiment, the method 500 may include one, two, or three of 542, 544, and 546.

[0067] Figure 6 is a block diagram of a method 600 for preventing a refrigerated transport unit (eg, refrigerated transport unit 1, refrigerated transport unit 110) from driving away according to a third embodiment. In an embodiment, the method 600 may be performed by Figure 3 The run-off protection system 200 in FIG.

[0068] At 605, a controller (eg, controller 55, controller 220) detects whether a power system (eg, power system 210) is electrically connected to a utility power source (eg, utility power source 260). In an embodiment, 605 is similar to 405 as discussed above. Method 605 then proceeds to 610.

[0069] At 610, if the power system is not electrically connected to a utility power source, method 600 proceeds back to 605. If the power system is electrically connected to a utility power source, method 600 proceeds to 630.

[0070] At 630, the controller generates instructions to prevent the refrigerated transport unit from moving. The instructions can be configured to provide a warning to personnel near the refrigerated transport unit. 630 can include generating an audible warning 632 and generating a visible warning 634. Each of 632 and 634 is an example of an instruction configured to provide a warning to personnel near the refrigerated transport unit.

[0071] At 632, the instructions are configured to operate a speaker (e.g., speaker 252, speaker 352) to generate an audible warning. The speaker may be disposed in the refrigerated transport unit or in an attached tractor (e.g., tractor 3, tractor 270). For example, the instructions may activate a controller of the refrigerated transport unit or a controller of the attached tractor (e.g., controller 5, controller 272) to operate the speaker to generate an audible warning. In an embodiment, the audible warning 632 may be generated when the tractor is attached to the refrigerated transport unit. In another embodiment, the audible warning 632 is generated when the attached tractor attempts to move the refrigerated transport unit while the power system is electrically connected to a utility power source.

[0072] At 634, instructions are configured to operate a warning light (e.g., warning light 278) to generate a visible warning. The warning light is disposed on the refrigerated transport unit or on / in an attached tractor. For example, the warning light may be disposed in an attached tractor (e.g., in a dashboard of an attached tractor), on an exterior of the tractor, or on an exterior of the refrigerated transport unit. The warning light is configured to inform a person near the refrigerated transport unit (e.g., an operator of the attached refrigerated transport unit, a person located near the refrigerated transport unit, etc.) that the refrigerated transport unit is electrically connected to a utility power source. In an embodiment, a visible warning 634 is generated when the attached tractor attempts to move the refrigerated transport unit while the power system is electrically connected to a utility power source.

[0073] As discussed above, in embodiments, the warning light for 634 and / or the speaker for 632 may be on the exterior of the refrigerated transport unit. In embodiments, method 600 includes sending instructions from the refrigerated transport unit. For example, method 600 may include sending instructions to a refrigerated transport unit associated with the refrigerated transport unit. Figure 5 For example, method 600 may include sending a command to a facility (e.g., a building, a warehouse, a charging station including a utility power source, Figure 2 The docking port 130 in FIG. 1 ). The facilities include a warning light for 634 and / or a speaker for 632 .

[0074] After 632 and 634 , method 600 proceeds back to 605 . Figure 6The method 600 in 630 includes both generating an audible warning 632 and generating a visible warning 634. However, each of 632 and 634 is an example of a warning 630 for a person in the vicinity of the refrigerated transport unit. Accordingly, in an embodiment, the instructions at 630 may not be configured to generate an audible warning 632 or generate a visible warning 634. In an embodiment, the method 600 may include one or more of 632 or 634. In an embodiment, the method 600 may include only one of 632 or 634.

[0075] Figure 7 is a block diagram of a method 700 for preventing a refrigerated transport unit (eg, refrigerated transport unit 1, refrigerated transport unit 205) from driving away according to a fifth embodiment. In an embodiment, Figure 3 The drive-away protection system 200 in the embodiment of the present invention can adopt a method 700 for preventing a refrigerated transport unit from driving away. The method starts at 705 .

[0076] At 705, a controller (eg, controller 55, controller 220) detects whether the power system (eg, power system 210) is electrically connected to a utility power source (eg, utility power source 260). In an embodiment, 705 is similar to 405 as discussed above. Then, method 700 proceeds to 710.

[0077] At 710, if the power system is not electrically connected to a utility power source, method 700 proceeds back to 705. If the power system is electrically connected to a utility power source, method 700 proceeds to 731.

[0078] At 731, the controller generates a first instruction to prevent the refrigerated transport unit from moving. For example, the first instruction can be configured to: make the refrigerated transport unit more difficult to move, affect the operation of the attached tractor (e.g., tractor 3, tractor 270), and / or provide a warning to people near the refrigerated transport unit or the attached tractor. Then, the method 700 proceeds to 732.

[0079] At 732, if no tractor is attached to the refrigerated transport unit, the method proceeds to 733A. If a tractor is attached to the refrigerated transport unit, the method proceeds to 735. For example, the controller of the refrigerated transport unit may determine that a tractor is attached based on one or more of its electrical connections (e.g., communication line 207) to the tractor and / or movement of the refrigerated transport unit.

[0080] At 733A, it is detected whether the power system is still electrically connected to the utility power source. For example, the electrical connection 733A is determined in a manner similar to 705. If the power system is still electrically connected to the utility power source, the method 700 proceeds back to 732. If the power system is no longer electrically connected to the utility power source, the method proceeds to 734A.

[0081] At 734A, a second instruction is generated to indicate that the refrigerated transport unit is allowed to move. The second instruction undoes any changes caused by the first instruction. In some cases, the second instruction may not actively cause any changes (e.g., deactivate the brake system of the refrigerated transport unit, etc.). For example, the refrigerated transport unit may still be parked, and the brake system of the refrigerated transport unit (e.g., brake system 42, brake system 250) may remain active to prevent the refrigerated transport unit from rolling until the tractor is attached to the refrigerated transport unit. Then, the method 700 proceeds back to 705.

[0082] At 735, a first instruction is sent to the attached tractor. The first instruction is configured to prevent the tractor from moving, as similarly discussed above with respect to 542. The first instruction may be sent to the tractor in a manner similar to that discussed above with respect to 542.

[0083] At 733B, similar to 733A, it is detected whether the power system is still electrically connected to the utility power source. If the power system is still electrically connected to the utility power source, the method 700 proceeds back to 735. If the power system is not electrically connected to the utility power source, the method proceeds to 734B.

[0084] At 734B, similar to 734A, the controller generates a second instruction to indicate that the refrigerated transport unit is allowed to move. The method then proceeds to 737. At 737, the second instruction is sent to the tractor. In an embodiment, the second instruction is configured to undo any changes to the tractor caused by the first instruction. The second instruction may not actively cause any changes to the tractor, but is configured to allow the tractor (e.g., inform the controller of the tractor) to move when necessary.

[0085] In an embodiment, the first instruction and the second instruction are sent from the refrigerated transport unit to the tractor as electrical signals (e.g., wired electronic signals, wireless electronic signals). For example, the first instruction is an electrical signal that activates a controller of the tractor to configure the tractor to prevent it from moving. In another embodiment, the first instruction sent to the tractor at 735 is an active signal (e.g., wired electronic signal, wireless electronic signal) sent to the tractor continuously or in a set pattern (e.g., every 15 seconds, every 30 seconds, etc.). In such an embodiment, sending the second instruction to the tractor 270 can be to stop transmitting the active signal to the tractor. Then, the method proceeds back to 705.

[0086] Figure 7The generating first instruction 731 and generating the second instruction 734A / 734B in are examples of embodiments for generating instructions to prevent the refrigeration transport unit from moving while the power system is electrically connected to the utility power source. In an embodiment, similar to method 700, 430 in method 400, 530 in method 500, and / or 630 in method 600 may include generating the first instruction 731 and generating the second instruction 734A / 734B. In such an embodiment, as discussed above, the first instruction 731 and the second instruction 734A may be signals, respectively, or the first instruction 731 may be an active signal and the second instruction 734A may be a lack of an active signal.

[0087] Figure 8 8 is a flow chart of a method 800 for preventing a refrigerated transport unit (e.g., refrigerated transport unit 1, refrigerated transport unit 205) from driving away according to a sixth embodiment. In an embodiment, in addition to the power system (e.g., power system 210) of the refrigerated transport unit being able to wirelessly receive power from a utility power source (e.g., utility power source 260) rather than via external wires (e.g., external wires 265), Figure 3 The run-off protection system 200 in the embodiment may employ the method 800 for preventing the refrigerated transport unit from running away. For example, the wireless charging may be, but is not limited to, inductive charging.

[0088] At 805, a controller (e.g., controller 55, controller 220) detects whether the power system is wirelessly connected to a utility power source. For example, the power system may be wirelessly connected to a utility power source when the power system is capable of wirelessly receiving power from the utility power source. In an embodiment, the power system may be configured not to wirelessly connect to a utility power source until the refrigerated transport unit has been parked. Then, method 800 proceeds to 810.

[0089] At 810, if the power system is not connected to a utility power source, the method proceeds back to 805. If the power system is wirelessly connected to a utility power source, the method 800 proceeds to 812.

[0090] At 812, the controller detects the charge of the battery pack (e.g., battery pack 35, battery pack 215) of the refrigerated transport unit. For example, the controller can use one or more sensors (e.g., voltage sensor, current sensor, etc.) to determine the charge of the battery pack. Then, method 800 proceeds to 814.

[0091] At 814, if the charge of the battery pack is less than a predetermined amount, the method proceeds to 830. For example, the predetermined amount may be based on the expected minimum charge of the battery pack before charging of the battery pack is completed and / or the minimum charge required for the next trip of the refrigerated transport unit. In an embodiment, the controller of the refrigerated transport unit and / or the attached tractor may determine the predetermined amount. In another embodiment, the predetermined amount may be provided to the refrigerated transport unit by an operator or a remote server or facility via a telematics unit (e.g., telematics unit 254). In an embodiment, at 814, the power system is configured to charge the battery pack using utility power when the battery pack is below a predetermined amount. Accordingly, when the battery pack in such an embodiment is below a predetermined amount, the battery pack is charged. If the charge of the battery pack is equal to or greater than the predetermined amount, the method 800 proceeds back to 805. For example, since the battery pack does not require additional charging during its next trip, the method 800 proceeds back to 805, and since the battery pack is sufficiently charged, there is no need to prevent the refrigerated transport unit from moving.

[0092] At 830, instructions are generated to prevent the refrigerated transport unit from moving. The instructions are configured to prevent the refrigerated transport unit from moving while the refrigerated transport unit is electrically connected to a utility power source and the charge of the battery pack is below a predetermined amount. For example, the instructions may include making the refrigerated transport unit more difficult to move, affecting the operation of an attached tractor (e.g., tractor 3, tractor 270), and / or providing a warning to an operator, as described above with respect to Figure 4 Method 400 in Figure 5 Method 500 in Figure 6 Method 600 and Figure 7 In an embodiment, the instruction at 830 may include a single signal (eg, an active signal) or multiple signals, as discussed similarly above with respect to method 700. Then, method 800 proceeds back to 805.

[0093] It should be understood that Figure 4-8 The methods 400, 500, 600, 700, and 800 in the embodiment may be combined. In an embodiment, the method for preventing the refrigerated transport unit from moving away may include features of one or more of the methods 400, 500, 600, 700, and 800. For example, in an embodiment, in addition to or instead of generating an instruction to prevent the refrigerated transport unit from moving 830, the method 800 may include reporting information about the refrigerated transport unit 480.

[0094] aspect:

[0095] Any of aspects 1-12 may be combined with any of aspects 13-18.

[0096] Aspect 1. A method for preventing a refrigerated transport unit from driving away, the refrigerated transport unit comprising a transport unit having an interior space for storing cargo and a transport climate control system for controlling an environmental condition of the interior space, the method comprising:

[0097] detecting whether a power system of the refrigerated transport unit is electrically connected to a utility power source, the power system being configured to provide power to the transport climate control system; and

[0098] The actions are performed when the power system is electrically connected to a utility power source.

[0099] Aspect 2. The method according to aspect 1, wherein performing an action when the power system is electrically connected to a utility power source comprises:

[0100] While the power system is electrically connected to a utility power source, a brake system of the transport unit is activated, the activated brake system being configured to prevent wheels of the transport unit from rotating.

[0101] Aspect 3. The method according to any one of aspects 1 and 2, wherein performing an action when the power system is electrically connected to a utility power source comprises:

[0102] When the power system is electrically connected to a utility power source, generating instructions to prevent the refrigerated transport unit from moving while the power system is electrically connected to a utility power source; and

[0103] The instructions are sent to the tractor when the tractor is attached to the refrigerated transport unit, the instructions being configured to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to a utility power source.

[0104] Aspect 4. The method according to aspect 3, wherein the tractor comprises wheels and a braking system for preventing the wheels from rotating, and the method further comprises:

[0105] Based on the instruction to prevent the refrigerated transport unit from moving, the braking system is activated to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to the utility power source.

[0106] Aspect 5. A method according to any one of aspects 3 and 4, wherein the tractor comprises a prime mover for moving the tractor along the ground, and the method further comprises:

[0107] Based on the instruction to prevent movement of the refrigerated transport unit, the prime mover is prevented from providing movement to the tractor while the electrical system of the refrigerated transport unit is electrically connected to the utility power source.

[0108] Aspect 6: The method according to any one of aspects 2-5, further comprising:

[0109] sending instructions to a docking port including an attachment arm for physically restraining the transport unit; and

[0110] Based on the instruction to prevent movement of the refrigerated transport unit, the attachment arm is prevented from being detached from the transport unit while the power system is electrically connected to a utility power source.

[0111] Aspect 7: The method according to any one of aspects 2 to 6, further comprising:

[0112] determining a charge of a battery pack of a transport refrigeration unit, the battery pack being configured to supply power to a transport climate control system for controlling environmental conditions of an interior space; and

[0113] The command is generated when the charge of the battery pack is below a predetermined amount and the power system is electrically connected to a utility power source.

[0114] Aspect 8: The method according to any one of aspects 1 to 7, further comprising:

[0115] sending instructions from the first transport refrigeration unit to the second transport refrigeration unit; and

[0116] The first transport refrigeration unit and the second transport refrigeration unit are prevented from moving by an instruction to prevent the first transport refrigeration unit from moving.

[0117] Aspect 9. The method of any one of aspects 1-8, wherein while the power system is electrically connected to a utility power source, generating instructions to prevent the transport refrigeration unit from moving comprises:

[0118] generating a first instruction to prevent movement of the transport refrigeration unit when the power system is electrically connected to a utility power source, and

[0119] When the power system is no longer electrically connected to utility power, a second instruction is generated to cease preventing the transport refrigeration unit from moving.

[0120] Aspect 10. The method according to any one of aspects 1 to 9, wherein performing an action when the power system is electrically connected to a utility power source comprises:

[0121] When the refrigerated transport unit is moved while the power system is electrically connected to utility power, a visual warning is generated.

[0122] Aspect 11. The method according to aspect 10, wherein performing the action when the power system is electrically connected to a utility power source comprises:

[0123] A visual warning is provided by a warning light provided on a tractor attached to the refrigerated transport unit.

[0124] Aspect 12. The method according to any one of aspects 1-11, wherein performing the action when the power system is electrically connected to a utility power source comprises:

[0125] When a towing vehicle attempts to move the transport refrigeration unit while the power system is electrically connected to utility power, an audible warning is generated via the speaker.

[0126] Aspect 13. The method according to any one of aspects 1-12, wherein performing the action when the power system is electrically connected to a utility power source comprises:

[0127] Movement of the refrigerated transport unit occurring while the power system is electrically connected to utility power is reported via the telematics unit.

[0128] Aspect 14: A run-off protection system, comprising:

[0129] Refrigerated transport unit, comprising:

[0130] a transport unit including an interior space for storing goods;

[0131] a transport climate control system configured to control environmental conditions of an interior space;

[0132] a power system configured to receive external power from a utility power source and provide power to the transport climate control system; and

[0133] A controller monitors the power system, the controller being configured to perform actions based on the power system being electrically connected to the refrigerated transport unit.

[0134] Aspect 15. The drive-off protection system according to aspect 14, wherein the power system includes a socket for receiving external power from a utility power source, and the controller detects current supplied from the socket to determine whether the power system is electrically connected to the utility power source.

[0135] Aspect 16. The drive-off protection system according to aspect 14, wherein the power system includes a socket for receiving external power from a utility power source, and the controller is configured to sense a physical connection between the external power cord and the socket to determine whether the power system is electrically connected to the utility power source.

[0136] Aspect 17. The drive-off protection system according to any one of aspects 14-16, wherein the controller is configured to generate instructions when the power system is electrically connected to a utility power source, and the instructions are configured to prevent the refrigeration transport system from moving while the power system is electrically connected to a utility power source.

[0137] Aspect 18. The run-off protection system according to Aspect 17, further comprising:

[0138] a tractor attached to the refrigerated transport unit, the tractor including a controller for controlling the tractor;

[0139] Wherein the controller of the refrigerated transport unit is configured to send instructions to the tractor, and the instructions activate the controller of the tractor to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit.

[0140] Aspect 19. A run-off protection system according to Aspect 18, wherein the tractor includes a prime mover for moving the tractor, and an instruction is given to activate a controller of the tractor to prevent the prime mover from providing movement to the tractor while the power system of the refrigerated transport unit is electrically connected to a utility power source and the tractor is attached to the refrigerated transport unit.

[0141] Aspect 20: The run-off protection system according to any one of aspects 14 to 19, further comprising:

[0142] A second refrigerated transport unit attached to the first refrigerated transport unit, the second refrigerated transport unit comprising:

[0143] a second transport unit including an interior space for storing cargo;

[0144] a second transport climate control system configured to control environmental conditions of an interior space of a second transport unit;

[0145] a second power system configured to receive external power from a utility power source and provide power to a second transport climate control system; and

[0146] a second controller that monitors the second power system; when the second power system is electrically connected to the utility power source, the second controller generates an instruction to prevent the second refrigerated transport unit from moving, wherein

[0147] The second controller is configured to send instructions generated by the second controller to the first controller of the first transport refrigeration unit.

[0148] The examples disclosed in this application are to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims rather than by the foregoing description; and all changes within the meaning and range of equivalents of the claims are encompassed.

Claims

1. A method for preventing a refrigerated transport unit from being driven away, the refrigerated transport unit comprising a transport unit having an interior space for storing cargo and a transport climate control system for controlling environmental conditions of the interior space, the method comprising: detecting whether a power system of the refrigerated transport unit is electrically connected to a utility power source, the power system being configured to provide power to the transport climate control system; as well as When the power system is electrically connected to the utility power source, actions are performed, including: generating, when the power system is electrically connected to the utility power source, instructions to prevent movement of the refrigerated transport unit while the power system is electrically connected to the utility power source; and at least one of: wherein detecting whether the power system of the refrigerated transport unit is electrically connected to a utility power source comprises sensing a physical connection between a socket of the power system of the refrigerated transport system and external electrical wiring of the utility power source; and / or The method further comprises: sending the command to a docking port including an attachment arm for physically restraining the transport unit, and Based on the instruction to prevent movement of the refrigerated transport unit, preventing the attachment arm from being detached from the transport unit while the power system is electrically connected to the utility power source; and / or The method further comprises: sending the instructions from the first refrigerated transport unit to the second refrigerated transport unit; and The first refrigerated transport unit and the second refrigerated transport unit are prevented from moving by the instruction preventing the first refrigerated transport unit from moving.

2. The method according to claim 1, characterized in that When the power system is electrically connected to the utility power source, performing actions includes: While the power system is electrically connected to the utility power source, a brake system of the transport unit is activated, the activated brake system being configured to prevent wheels of the transport unit from rotating.

3. The method according to claim 1, characterized in that When the power system is electrically connected to the utility power source, performing actions includes: The instructions are sent to the tractor when the tractor is attached to the refrigerated transport unit, the instructions being configured to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to the utility power source.

4. The method according to claim 3, characterized in that The tractor includes wheels and a braking system for preventing the wheels from rotating, and the method further includes: Based on the instruction to prevent movement of the refrigerated transport unit, the braking system is activated to prevent movement of the tractor while the power system of the refrigerated transport unit is electrically connected to the utility power source.

5. The method according to claim 3, characterized in that: The tractor includes a prime mover for moving the tractor along the ground, and the method further includes: Based on the instruction to prevent movement of the refrigerated transport unit, the prime mover is prevented from providing movement to the tractor while the electrical system of the refrigerated transport unit is electrically connected to the utility power source.

6. The method according to claim 1, further comprising: sending the command to the docking port including the attachment arm for physically restraining the transport unit; as well as Based on the instruction to prevent movement of the refrigerated transport unit, the attachment arm is prevented from being detached from the transport unit while the power system is electrically connected to the utility power source.

7. The method according to claim 1, further comprising: determining a charge of a battery pack of the refrigerated transport unit, the battery pack being configured to supply power to the transport climate control system for controlling the environmental conditions of the interior space; as well as The instructions are generated when the charge of the battery pack is below a predetermined amount and the power system is electrically connected to the utility power source.

8. The method according to claim 1, further comprising: sending the instruction from the first refrigerated transport unit to the second refrigerated transport unit; as well as The first refrigerated transport unit and the second refrigerated transport unit are prevented from moving by the instruction preventing the first refrigerated transport unit from moving.

9. The method according to claim 1, characterized in that: Generating the instructions to prevent movement of the refrigerated transport unit while the power system is electrically connected to the utility power source includes: generating a first instruction to prevent movement of the refrigerated transport unit when the power system is electrically connected to the utility power source, and When the power system is no longer electrically connected to the utility power source, a second instruction is generated to cease preventing the refrigerated transport unit from moving.

10. The method according to claim 1, characterized in that When the power system is electrically connected to the utility power source, performing actions includes: When the refrigerated transport unit is moved while the power system is electrically connected to the utility power source, a visual warning is generated.

11. The method according to claim 10, characterized in that The visual warning is generated by a warning light disposed within a tractor attached to the refrigerated transport unit.

12. The method according to claim 1, characterized in that When the power system is electrically connected to the utility power source, performing actions includes: When a tractor attempts to move the refrigerated transport unit while the power system is electrically connected to the utility power source, an audible warning is generated via a speaker.

13. The method according to claim 1, characterized in that When the power system is electrically connected to the utility power source, performing actions includes: Movement of the refrigerated transport unit occurring while the power system is electrically connected to the utility power source is reported via a telematics unit.

14. A run-off protection system, comprising: Refrigerated transport unit, comprising: a transport unit including an interior space for storing goods; a transport climate control system configured to control environmental conditions of said interior space; a power system configured to receive external power from a utility power source and provide power to the transport climate control system; and a controller that monitors the power system, the controller being configured to generate instructions when the power system is electrically connected to the utility power source, and the instructions being configured to prevent the refrigerated transport unit from moving while the power system is electrically connected to the utility power source, wherein the controller of the refrigerated transport unit is configured to perform at least one of the following: detecting whether the power system of the refrigerated transport unit is electrically connected to a utility power source by sensing a physical connection between an outlet of the power system of the refrigerated transport system and external wiring of a utility power source; and / or sending the command to a docking port including an attachment arm for physically restraining the transport unit, Based on the instruction to prevent movement of the refrigerated transport unit, preventing the attachment arm from being detached from the transport unit while the power system is electrically connected to the utility power source; and / or The instructions are sent to a second controller of a second refrigerated transport unit attached to the first refrigerated transport unit, and the instructions are configured to activate the second controller of the second transport unit to prevent the second refrigerated transport unit from moving while the power system is electrically connected to the utility power source.

15. The run-off protection system according to claim 14, characterized in that: The power system includes the receptacle for receiving the external power from the utility power source, and the controller is configured to sense the physical connection between the external power cord and the receptacle to determine whether the power system is electrically connected to the utility power source.

16. The run-off protection system according to claim 14, further comprising: a tractor attached to the refrigerated transport unit, the tractor including a controller for controlling the tractor; wherein the controller of the refrigerated transport unit is configured to send the instruction to the tractor, and the instruction activates the controller of the tractor to prevent the tractor from moving while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit.

17. The run-off protection system according to claim 16, characterized in that: The tractor includes a prime mover for moving the tractor, and the instructions activate the controller of the tractor to prevent the prime mover from providing movement to the tractor while the power system of the refrigerated transport unit is electrically connected to the utility power source and the tractor is attached to the refrigerated transport unit.

18. The run-off protection system according to claim 14, further comprising: The second refrigerated transport unit attached to the first refrigerated transport unit, the second refrigerated transport unit comprising: a second transport unit including an interior space for storing cargo; a second transport climate control system configured to control environmental conditions of the interior space of the second transport unit; a second power system configured to receive external power from the utility power source and provide power to the second transport climate control system; and The second controller monitors the second power system, and when the second power system is electrically connected to the utility power source, the second controller generates an instruction to prevent the second refrigerated transport unit from moving, wherein, The second controller is configured to send the instructions generated by the second controller to the first controller of the first refrigerated transport unit.

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