A voltage conversion system includes an energy storage device; a power conversion unit connected to the energy storage device, the power conversion unit comprising: an inductor, the inductor comprising a number of coils that are non-coupled or weakly coupled, with a coupling coefficient less than 0.05; a multi-phase boost stage coupled to the inductor, wherein the multiphase boost stage comprises a number of phases that equals the number of coils; an inverter coupled to the multiphase boost stage; and a load coupled to the power conversion unit.

A refrigerator comprises: a storage compartment, at least divided into a refrigerating compartment and a freezing compartment a first evaporator, arranged at a cooling compartment connected to the storage compartments through supply air ducts; a second evaporator, arranged inside the freezing compartment a switching valve, used to switch the flow of a refrigerant to a refrigerant channel connected to the second evaporator; a fan, used to enable cooled air in the first evaporator to flow from the cooling compartment to the storage compartments; a first air duct damper, inserted in the supply air duct connected to the refrigerating compartment and a second air duct damper, inserted in the supply air duct connected to the freezing compartment.

Provided is a transport device which can perform easily thermal storage temperature controlling treatment of the thermal storage material even at a cell transport destination. The transport device of the present invention includes: a thermally insulated container that has a cylindrical shape and a bottom, a thermal storage material disposed along the inner circumferential surface of the thermally insulated container, and a temperature control unit that is detachably fitted on the thermally insulated container and is for performing thermal storage temperature controlling treatment on the thermal storage material, wherein the temperature controlling unit comprises a heat transferring body for performing the thermal storage temperature control processing on the thermal storage material when the unit is fitted on the thermally insulated container, and a storage space formed inside the heat-transferring body for storing a stored object so that the object can be freely put in and taken out.

A dual redundant cooling system for a container is provided. The dual redundant cooling system includes a first cooling unit and a second cooling unit. The first cooling unit is positioned in a first cabinet attached to the container. The first cooling unit includes a first controller operating a first cooling loop to cool an interior of the container. The second cooling unit is positioned in a second cabinet attached to the container and adjacent the first cabinet. The second cooling unit includes a second controller operating a second cooling loop to cool the interior of the container. The first cooling unit and the first cooling loop are separate from the second cooling unit and the second cooling loop. The first controller and the second controller communicate a switch signal between each other so that either the first cooling unit is a primary cooling unit operating the first cooling loop or the second cooling unit is the primary cooling unit operating the second cooling loop. The switch signal switching the primary cooling unit. The system interface box positioned in the second cabinet and connected to the first cooling unit and the second cooling unit. The system interface box has a first switch adapted to power on or power off the first cooling unit and a second switch adapted to power on or power off the second cooling unit.

A Peltier system can be retrofit to a standard cooler. A thermal conductive material passes between the cooler lip and the lid to provide a heat pipe communicating between opposed Peltier devices, a first device positioned within the cooler and pumping heat into the heat pipe and a second device positioned outside the cooler and removing heat from the heat pipe.

A method and system for converting a conventional cooler to a refrigerator. A heat transfer module is disposed within the cooler for cooling the contents therein, while an external cooling module includes refrigerant in a closed loop configuration that stays outside of the cooler. The heat transfer module includes a closed loop chilling fluid that extends outside the cooler through a drain port to perform a heat exchange with the refrigerant loop.

A trunk cooler removably connected under a seat of a vehicle, the trunk cooler including a base cooler receptacle to store at least one item therein, a plurality of retractable legs disposed on a bottom surface of the base cooler receptacle to support the base cooler receptacle in response to moving the plurality of retractable legs from being retracted in a first vertical position to at least partially extended in a second vertical position, and a cooling system to inject cold air into an interior portion of the base cooler.

A transport refrigeration unit (13) is provided and includes a wall (510) defining an inlet (511) and an outlet (512) and a pod (530) attachable to the wall (510) to define, with a portion of the wall, an interior configured to accommodate a heat exchange portion of a heat exchanger (520), a fan (550) that drives air flow from the inlet (511) and to the outlet (512) through the heat exchange portion. The pod (530) is configured to isolate coolant flow control elements (522) of the heat exchanger (520) from the interior.

A chest insert for a freezer is disclosed. The chest insert is placed inside a freezer and food is placed inside the chest insert. Several sides of the chest insert comprise a gap which is partially filled with a refrigerant gel. These gaps are slanted such that the gel can expand into a wider gap as it expands while freezing, lessening the risk of uneven freezing causing the refrigerant gel to press against the walls of the chest insert. The use of the disclosed subject matter reduces freezer burn by stabilizing humidity. Further, the chest insert maintains the temperature inside the chest insert for extended periods if the freezer fails or the power to the freezer is interrupted.

A cooler can comprise a shell that defines a cavity, a container disposed in the cavity, and one or more thermoelectric coolers (TECs). Each of the TEC(s) can have opposing first and second surfaces and be configured to transfer heat from the first surface to the second surface when an electric current flows through the TEC. Each of the TEC(s) can also be movable between a first position in which the first surface does not contact the container and a second position in which the first surface contacts the container.