Abstract: The present disclosure relates to a power regulating unit and a transport refrigeration device using the same, and belongs to the technical field of power supplies. The power regulating unit of the present disclosure comprises: a rectifier module configured to perform a rectification operation on an AC input to obtain a first DC signal; a controller configured to control the rectification operation of the rectifier module based on corresponding parameter information for reflecting fluctuations of the AC input to prevent the first DC signal obtained from being affected by the fluctuations; a first output port configured to output the first DC signal; a first DC-DC conversion module configured to convert the first DC signal into a second DC signal; and a second output port configured to output the second DC signal. The power regulating unit of the present disclosure can provide multi-mode DC outputs and the DC outputs are stable.

Abstract: A refrigeration system comprises: a compressor, a first heat exchanger, a reservoir, a throttling element and a second heat exchanger in the refrigeration circuit. The refrigeration system comprises a cooling mode and a hot-gas bypass heating mode. In the hot-gas bypass heating mode, the refrigerant leaving the outlet of the compressor is delivered directly to the second heat exchanger before returning to the inlet of the compressor, wherein, the refrigeration system further comprises a branch flow path with a control valve provided thereon. The control valve is capable of being opened or closed in the hot-gas bypass heating mode.

Abstract: A refrigeration unit includes: a refrigeration circuit including a compressor, a condenser, a thermal expansion valve, and an evaporator connected into a circuit; and a heat recovery system including a thermoelectric module, a control module and a battery; the thermoelectric module includes a first side and a second side, the first side being configured to establish a thermal connection with a first heat source and the second side being configured to establish a thermal connection with a second heat source, the first heat source and the second heat source having different temperatures, the thermoelectric module being configured to generate power by the temperature difference between the first heat source and the second heat source; and the control module is configured to store the power generated by the thermoelectric module to the battery, the battery being configured to drive the refrigeration circuit.

Abstract: A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

Abstract: A multi-temperature air conditioning system, a control method thereof and a transport refrigeration vehicle. The multi-temperature air conditioning system includes an outdoor unit; a first type indoor unit; and a second type indoor unit; a number of a first type four-way valves corresponds to the number of the first type indoor units, and a number of a second type four-way valves corresponds to the number of the second type indoor units; and a section flow path which could be conducted or disconnected is further included, which connects the first type indoor unit between the first throttling element and the first on-off valve, and connects the second type indoor unit between the second throttling element and the second on-off valve.

Abstract: A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

Abstract: A transport refrigeration system, a control method therefor and an electric transport vehicle are provided by the present disclosure. The control method for the transport refrigeration system includes: if a ratio of a current battery charge amount to a minimum battery charge amount is not less than a first preset value, controlling power consuming units in the transport refrigeration system to operate in a power-unrestricted state; and if the ratio of the current battery charge amount to the minimum battery charge amount is less than the first preset value, controlling the power consuming units in the transport refrigeration system to operate in a power-restricted state; wherein the power-restricted state is associated with the ratio of the current battery charge amount to the minimum battery charge amount.

Abstract: An electrical power module and transport refrigeration system. The electrical power module is used for an apparatus powered by a battery or/and a fuel, has a working mode and includes: a DC buck module configured to step-down a DC at least provided by the battery to a low-voltage output DC for output, or/and a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the fuel to a high-voltage DC for output; and a control module connected to a transport refrigeration unit, and configured to, in the working mode, control the operation of the DC buck module or/and the DC boost module.

Abstract: A power management method used for power distribution in a transportation refrigeration unit. The power management method includes calculating engine power according to engine operating parameters; calculating power generator real-time input power according to power generator excitation current; calculating available power based on the power generator real-time input power and the engine power; and managing power distributed to a compressor based on the available power. The present invention further relates to a power management system. The power management method and system have the advantages of simplicity, reliability, stable operation and the like, the power generator real-time input power can be calculated according to the power generator excitation current, thus more power can be provided to the compressor on the premise that the power supply to power generator loads is guaranteed, and the operating efficiency of the transportation refrigeration unit is improved.

Abstract: A refrigeration system and a start control method for a refrigeration system. The refrigeration system includes: a refrigeration loop having an exhaust port of a compressor, a condenser, a throttle element, an evaporator, and a suction port of the compressor connected in sequence by using a flow path; wherein a first valve is disposed between the throttle element and the condenser, and the first valve is at least capable of cutting off a refrigerant flow from the throttle element to the condenser; and a second valve is disposed close to the suction port of the compressor, and the second valve is used to control on/off of a flow path between the evaporator and the compressor. Starting load of the refrigeration system according to the present invention can be effectively reduced, so that the power and size of a drive component for providing power can also be reduced.

Abstract: A refrigeration unit includes: a refrigeration circuit including a compressor, a condenser, a thermal expansion valve, and an evaporator connected into a circuit; and a heat recovery system including a thermoelectric module, a control module and a battery; the thermoelectric module includes a first side and a second side, the first side being configured to establish a thermal connection with a first heat source and the second side being configured to establish a thermal connection with a second heat source, the first heat source and the second heat source having different temperatures, the thermoelectric module being configured to generate power by the temperature difference between the first heat source and the second heat source; and the control module is configured to store the power generated by the thermoelectric module to the battery, the battery being configured to drive the refrigeration circuit.

Abstract: A transport refrigeration system, a control method therefor and an electric transport vehicle are provided by the present disclosure. The control method for the transport refrigeration system includes: if a ratio of a current battery charge amount to a minimum battery charge amount is not less than a first preset value, controlling power consuming units in the transport refrigeration system to operate in a power-unrestricted state; and if the ratio of the current battery charge amount to the minimum battery charge amount is less than the first preset value, controlling the power consuming units in the transport refrigeration system to operate in a power-restricted state; wherein the power-restricted state is associated with the ratio of the current battery charge amount to the minimum battery charge amount.

Abstract: The refrigeration system is configured to adjust a temperature inside a vehicle compartment of the transport vehicle, the refrigeration system including an evaporator disposed in the vehicle compartment and the evaporator including evaporator coils (120) through which a refrigerant flows and a housing (110) for accommodating the evaporator coils; wherein the housing is further provided with a heating element (130); and the refrigeration system further includes a control module (140) configured to control the heating element.

Abstract: A combined heat exchanger, a heat exchange system, and an optimization method thereof are provided. The heat exchange system includes: an enhanced vapor injection compressor, a condenser, an expansion valve and an evaporator, which are located in a main circuit; wherein the heat exchange system further includes a first branch branched from the main circuit to an vapor injection port of the compressor at a branch point P downstream of the condenser, and a first heat exchange unit and a second heat exchange unit are further provided in the main circuit between the branch point P and the expansion valve; and wherein a refrigerant leaving the condenser is divided at the branch point P into a first portion passing through the first heat exchange unit and the second heat exchange unit from the main circuit, and a second portion passing through the first branch to the vapor injection port.

Abstract: The present disclosure relates to a power regulating unit and a transport refrigeration device using the same, and belongs to the technical field of power supplies. The power regulating unit of the present disclosure comprises: a rectifier module configured to perform a rectification operation on an AC input to obtain a first DC signal; a controller configured to control the rectification operation of the rectifier module based on corresponding parameter information for reflecting fluctuations of the AC input to prevent the first DC signal obtained from being affected by the fluctuations; a first output port configured to output the first DC signal; a first DC-DC conversion module configured to convert the first DC signal into a second DC signal; and a second output port configured to output the second DC signal. The power regulating unit of the present disclosure can provide multi-mode DC outputs and the DC outputs are stable.

Abstract: A transport refrigeration device, a power management system and a power management method thereof are provided by the present disclosure. The transport refrigeration device includes a power source (110), a compressor (120) and a generator (130) both driven by the power source (110), a refrigerant in a refrigeration circuit which is compressed by the compressor (120), a battery (140) powered by the generator (130), an electrically driven component (150) in the refrigeration circuit which is powered by the generator (130) and/or the battery (140), and a control module (151), and wherein the power management method includes: adjusting an output power of the power source (110) and/or an input power of the compressor (120) and/or charge and discharge statuses of the battery (140), by limiting an upper limit and/or a lower limit of an output power of the generator (130) through the control module (151).

Abstract: A refrigeration unit for transportation, a door curtain thereof and a refrigeration vehicle. The door curtain includes: a curtain body; and a track, wherein the curtain body is movably mounted on the track, and the track has a main section for guiding the curtain body to move into a door area so as to be thermally insulated from the outside, and an extension section for guiding the curtain body to move out of the door area. The door curtain is a movable door curtain that is movable relative to the door.

Abstract: An electrical power module and transport refrigeration system. The electrical power module is used for an apparatus powered by a battery or/and a fuel, has a working mode and includes: a DC buck module configured to step-down a DC at least provided by the battery to a low-voltage output DC for output, or/and a DC boost module configured to step-up a low-voltage input DC provided by the apparatus powered by the fuel to a high-voltage DC for output; and a control module connected to a transport refrigeration unit, and configured to, in the working mode, control the operation of the DC buck module or/and the DC boost module.

Abstract: A refrigeration system and a start control method for a refrigeration system. The refrigeration system includes: a refrigeration loop having an exhaust port of a compressor, a condenser, a throttle element, an evaporator, and a suction port of the compressor connected in sequence by using a flow path; wherein a first valve is disposed between the throttle element and the condenser, and the first valve is at least capable of cutting off a refrigerant flow from the throttle element to the condenser; and a second valve is disposed close to the suction port of the compressor, and the second valve is used to control on/off of a flow path between the evaporator and the compressor. Starting load of the refrigeration system according to the present invention can be effectively reduced, so that the power and size of a drive component for providing power can also be reduced.