Abstract: A secondary battery, an electric apparatus, and a binder. The secondary battery includes a positive electrode plate, a negative electrode plate, and a separator. The negative electrode plate includes a negative electrode current collector and a negative electrode film layer disposed on at least one surface of the negative electrode current collector. The negative electrode film layer includes a negative electrode active material and a first binder. A mass percentage of the negative electrode active material in the negative electrode film layer is 96%-98.4%, and a mass percentage of the first binder in the negative electrode film layer is 0.5%-3%. The first binder includes a polymer, and the polymer includes —COOM, —CONH2, —CN, and —COOR, where M represents an alkali metal, and R represents substituted or unsubstituted C1-C20 alkyl.

Abstract: The present application provides a polymer, a preparation method, a negative electrode plate, a secondary battery, and a power consuming apparatus. The polymer contains a structural unit derived from an unsaturated carboxylic acid monomer, a structural unit derived from an unsaturated cyano monomer, and a structural unit derived from a flexible monomer. The glass transition temperature of the flexible monomer is ?60° C. to 0° C., and optionally ?55° C. to ?15° C.

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: This application provides a refrigeration apparatus using a main fan to cool an electronic control device while meeting heat exchange requirements of a heat exchanger. By arranging a first air duct and a second air duct in parallel, and controlling a relationship between a cross-sectional area of a first air duct inlet and a cross-sectional area of a second air duct outlet, and a relationship between a cross-sectional area of a second air duct inlet and the cross-sectional area of the second air duct outlet, air flowing into the first air duct after heat exchange with a refrigerant in the heat exchanger and air in the second air duct after heat exchange with the electronic control device are merged in the first air duct, and are discharged from the refrigeration apparatus through a first air duct outlet.

Abstract: A negative electrode plate comprises a negative electrode current collector and a negative electrode film layer located on at least one side of the negative electrode current collector. The negative electrode film layer comprises a binder. The negative electrode film layer comprises a first region and a second region. The mass ratio of the binder in the first region to the binder in the second region is 0.1-1.4. The first region extends from a surface on a side of the negative electrode film layer away from the negative electrode current collector towards the interior of the negative electrode film layer by a distance within h/2, and the second region extends from a surface on a side of the negative electrode film layer close to the negative electrode current collector towards the first region by a distance within h/2. h represents a thickness of the negative electrode film layer.

Abstract: The present disclosure provides a method for controlling a refrigerated transportation system, a refrigerated transportation system, and a computer-readable storage medium, the refrigerated transportation system including a box and a refrigeration unit, the refrigeration unit including a first evaporator and a second evaporator connected in parallel, the second evaporator having a phase change material, the method including: a rapid cooling step of the first evaporator and the second evaporator simultaneously exchanging heat with air in the box to release cold energy stored in the phase change material. According to the method for controlling a refrigerated transportation system, the refrigerated transportation system, and the computer-readable storage medium of the present disclosure, after the refrigerated transportation system operates for a short period of time, the refrigerated transportation system can provide a low-temperature environment that meets the needs of goods.

Abstract: The present application relates to a portable AC-DC power converter for an on-board refrigeration unit and an on-board power supply management device suitable for use in conjunction with the aforementioned portable AC-DC power converter. A portable AC-DC power converter for on-board electrical equipment according to one aspect of the present application comprises: an AC-DC conversion unit; one or more AC power plugs connected to an input terminal of the AC-DC conversion unit; and one or more connectors connected to an output terminal of the AC-DC conversion unit, wherein the connector comprises a DC output interface and a conductor, where the conductor is configured to short circuit contacts arranged on the refrigeration unit on the vehicle side when the DC output interface is engaged with a DC input interface of an on-board connector to generate a trigger signal to disconnect the on-board electrical equipment from an on-board power source.

Abstract: A hybrid refrigeration system comprises: a liquid nitrogen based first refrigeration device for regulating the temperature of a cargo box of a transportation refrigeration vehicle; a mechanical based second refrigeration device for regulating the temperature of the cargo box of the transportation refrigeration vehicle; and a controller connected to the first refrigeration device and the second refrigeration device; wherein, the controller is configured to determine whether the difference between the temperature of the cargo box and the set temperature is greater than or equal to a first threshold when receiving a refrigeration demand for the cargo box; if so, start the first refrigeration device alone or start both the first refrigeration device and the second refrigeration device simultaneously; and if not, start the second refrigeration device alone.

Abstract: The refrigeration system comprises: a main refrigeration circuit comprising a compressor, a condenser, a main throttling element, and an evaporator that are sequentially connected, where the evaporator is configured to provide refrigeration to a storage compartment of the transport refrigeration vehicles; an electronic component heat dissipation circuit configured to provide heat dissipation for electronic components; wherein, the electronic component heat dissipation circuit comprises an associated heat exchanger, in which refrigerant in the electronic component heat dissipation circuit exchanges heat with refrigerant from a first branch of the main refrigeration circuit, where the first branch extends from between the condenser and the main throttling device on the main refrigeration circuit, and is in communication with an EVI inlet of the compressor through a first throttling element and the associated heat exchanger.

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.