Climate controlled vehicle, transport climate control equipment, method of retrofitting a vehicle and method of operation

Transport climate control equipment for a climate controlled vehicle, the climate controlled vehicle comprising:

• a prime mover;
• a vehicle power network comprising:
• an alternator configured to be driven by the prime mover when the prime mover is active,
• a primary battery electrically connected to the alternator for charging;
• a secondary battery electrically connected to the alternator for charging, wherein the alternator and the primary and secondary batteries are arranged in parallel with each other;
• power supply terminals for connecting the vehicle power network to a transport climate control unit, wherein the power supply terminals are arranged in parallel with the secondary battery;
• a switch having a closed configuration in which the primary battery and the second battery are electrically coupled to the alternator for charging and an open configuration in which the secondary battery and the power supply terminals are isolated from the primary battery and the alternator to prevent power supply from the primary battery and the alternator to the transport climate control unit;
• the transport climate control equipment comprising:
• the transport climate control unit configured to be connected to the power supply terminals of the vehicle power network to receive power from the alternator, the primary battery, and/or the secondary battery when the prime mover is active and the switch is closed, and to receive power from the secondary battery when the prime mover is inactive and the switch is open;
• and
• a controller configured to determine whether to maintain operation of the transport climate control unit or to deactivate the transport climate control unit, upon determining deactivation of the prime mover, based on a power setting for the transport climate control unit.

A climate controlled vehicle comprising:

• a prime mover;
• a transport climate control unit;
• a vehicle power network comprising:
• an alternator configured to be driven by the prime mover when the prime mover is active,
• a primary battery electrically connected to the alternator for charging;
• a secondary battery electrically connected to the alternator for charging, wherein the alternator and the primary and secondary batteries are arranged in parallel with each other;
• power supply terminals connecting the vehicle power network to the transport climate control unit, wherein the power supply terminals are arranged in parallel with the secondary battery;
• a switch having a closed configuration in which the primary battery and the second battery are electrically coupled to the alternator for charging and an open configuration in which the secondary battery and the power supply terminals are isolated from the primary battery and the alternator to prevent power supply from the primary battery and the alternator to the transport climate control unit;
• and
• a further switch having a utility configuration in which the vehicle power network is isolated from the transport climate control unit by the further switch and a vehicle power configuration in which the vehicle power network is coupled to the transport climate control unit via the further switch;
• wherein the transport climate control unit is connected to the power supply terminals of the vehicle power network to receive power from the alternator, the primary battery, and/or the secondary battery when the prime mover is active and the switch is closed, and to receive power from the secondary battery when the prime mover is inactive and the switch is open;
• and
• wherein a controller is configured to determine whether to maintain operation of the transport climate control unit or to deactivate the transport climate control unit, upon determining deactivation of the prime mover, based on a power setting for the transport climate control unit.

A method of operating a climate controlled vehicle comprising:

• a prime mover;
• a transport climate control unit;
• a vehicle power network comprising:
• an alternator configured to be driven by the prime mover when the prime mover is active,
• a primary battery electrically connected to the alternator for charging;
• a secondary battery electrically connected to the alternator for charging, wherein the alternator and the primary and secondary batteries are arranged in parallel with each other;
• power supply terminals connecting the vehicle power network to the transport climate control unit, wherein the power supply terminals are arranged in parallel with the secondary battery;
• a switch having a closed configuration in which the primary battery and the second battery are electrically coupled to the alternator for charging and an open configuration in which the secondary battery and the power supply terminals are isolated from the primary battery and the alternator to prevent power supply from the primary battery and the alternator to the transport climate control unit;
• wherein the transport climate control unit is connected to the power supply terminals of the vehicle power network to receive power from the alternator, the primary battery, and/or the secondary battery when the prime mover is active and the switch is closed, and to receive power from the secondary battery when the prime mover is inactive and the switch is open;
• the method comprising:
• operating the transport climate control unit in a prime mover power mode in which:
• the prime mover is active to drive the alternator;
• power is supplied from the alternator to operate the transport climate control unit;
• optionally power is supplied to charge the primary battery and/or the secondary battery;
• a controller determining deactivation of the prime mover;
• upon deactivation of the prime mover, the switch moving from the closed configuration to the open configuration;
• in response to determining deactivation of the prime mover, determine a power setting for the transport climate control unit corresponding to maintaining operation of the transport climate control unit or deactivation of the transport climate control unit;
• based on the power setting, operating the transport climate control unit in a holdover mode in which:
• the prime mover is inactive;
• power is supplied from the secondary battery to operate the transport climate control unit.