Abstract: The present disclosure relates to the technical field of pyrolysis and improvement of caking middling coals, in particular to a low temperature pyrolysis method of a caking middling coal. The present disclosure provides a low temperature pyrolysis method of a caking middling coal, including the following steps: conveying the caking middling coal into a pyrolysis reactor through a top of the pyrolysis reactor; dividing a reaction chamber of the pyrolysis reactor into a drying section, a softening section, a melting and depolymerization section, a solidification section, and a cooling section by means of multi-channel gas distribution; and conducting zoned temperature control-based pyrolysis to obtain semi-coke at a bottom of the reactor as well as tar and coal gas at the top of the reactor. The pyrolysis method can well avoid caking and swelling of the caking middling coal during pyrolysis.

Abstract: The present disclosure discloses an energy storage converter, wherein a first end of the energy storage converter is coupled to at least one of the Q cell strings, and second end of the energy storage converter is configured to connect to a power grid. The first energy storage converter includes a DC/AC conversion unit and at least one DC/DC conversion unit. The DC/DC conversion unit is configured to perform adaptation between a voltage of the DC/AC conversion unit and a voltage of a cell string. Therefore, a cell capacity is fully used, and a waste of the cell capacity is reduced.

Abstract: A data processing system in the power station operation and maintenance system may determine a faulty module and a normal module based on module data of each photovoltaic module in a photovoltaic string, and obtain first power generation data of the faulty module and second power generation data of the normal module. Further, the data processing system may determine an annual lost energy yield of the faulty module based on the first power generation data, the second power generation data, and a preset energy yield of the photovoltaic power station, and obtain a target operation and maintenance measure from a plurality of operation and maintenance measures based on the annual lost energy yield. In this case, a communication system in the power station operation and maintenance system may notify an operation and maintenance user of the photovoltaic power station to perform operation and maintenance on the faulty module.

Abstract: The present disclosure relates to the technical field of pyrolysis and improvement of caking middling coals, in particular to a low temperature pyrolysis method of a caking middling coal. The present disclosure provides a low temperature pyrolysis method of a caking middling coal, including the following steps: conveying the caking middling coal into a pyrolysis reactor through a top of the pyrolysis reactor; dividing a reaction chamber of the pyrolysis reactor into a drying section, a softening section, a melting and depolymerization section, a solidification section, and a cooling section by means of multi-channel gas distribution; and conducting zoned temperature control-based pyrolysis to obtain semi-coke at a bottom of the reactor as well as tar and coal gas at the top of the reactor. The pyrolysis method can well avoid caking and swelling of the caking middling coal during pyrolysis.

Abstract: This application provide a refrigerant thermal management module and a thermal management system. Components in the refrigerant thermal management module are centrally arranged, so that a pipeline connected between the components is shortened and a refrigerant flow resistance is reduced, improving working performance of a refrigerant loop. In addition, a platform-based design is implemented through modular design. In addition, a plate heat exchanger in the refrigerant loop is used to absorb heat from a coolant loop in a vehicle function module, to implement a function of cooling the vehicle function module; and a condenser in the refrigerant loop is used to release heat to the coolant loop of the vehicle function module, to implement a function of heating the vehicle function module. Regardless of whether the vehicle function module needs to be heated or cooled, refrigerant flows in the refrigerant thermal management module keep a same direction of circulation.

Abstract: An electric vehicle drive system and an electric vehicle. The electric vehicle drive system includes a powertrain and a transmission system. The powertrain includes a first power output mechanism and a second power output mechanism. One end of the transmission system is connected to the first power output mechanism, and the other end is configured to be connected to an air-conditioner compressor. The second power output mechanism is configured to drive the electric vehicle to travel. The powertrain in the electric vehicle drive system can also drive the air-conditioner compressor when driving the electric vehicle, to reduce a quantity of components inside the electric vehicle, thereby reducing space occupancy and costs.

Abstract: This application provides a thermal management system and an electric vehicle. The thermal management system includes a battery water circuit and a seat water circuit. The battery water circuit includes a cooling water pump and a battery cooling/heating plate connected through a cooling water pipe. The seat water circuit has a liquid inlet end and a liquid outlet end. The liquid inlet end is connected between a liquid outlet of the cooling water pump and a liquid inlet of the battery cooling/heating plate through a seat water pipe and the cooling water pipe, and the liquid outlet end is connected between a liquid inlet of the cooling water pump and a liquid outlet of the battery cooling/heating plate through the seat water pipe and the cooling water pipe. The seat water circuit can be cooled by using the battery water circuit, to improve energy efficiency of the thermal management system.

Abstract: This application provides a thermal management system. The thermal management system includes a refrigerant loop and a motor coolant loop. The refrigerant loop and the motor coolant loop jointly include a low pressure chiller. The low pressure chiller is configured to enable a refrigerant in the refrigerant loop to absorb heat from a motor coolant in the motor coolant loop, to heat a target temperature-controlled space and/or a target temperature-controlled device. Therefore, a temperature of the motor coolant may be relatively low on a basis that a required heating temperature can be achieved, so that a difference between the temperature of the motor coolant and an ambient temperature is relatively small. In this way, heat loss caused by dissipation of heat from a motor to a surrounding environment can be reduced, thereby improving utilization of the heat from the motor.

Abstract: The present disclosure discloses a heat treatment method for a bainitic turnout rail, which includes: naturally cooling the turnout rail at a temperature in an austenite region after being finishing rolled to 450-480° C. at a tread center of a rail head of the turnout rail; accelerated cooling the naturally cooled turnout rail to 230-270° C. at the tread center of the rail head, a cooling rate at the tread center and a non-working side of the rail head being 1.5-5.0° C./s, a cooling rate at the working side of the rail head increasing by 0.1-1.0° C./s based on 1.5-5.0° C./s; continuously accelerated cooling the working side, the tread center and the non-working side of the rail head at a cooling rate of 0.05-0.25° C./s to decrease a temperature of the tread center of the rail head to 265-270° C.; and finally, naturally cooling the turnout rail to an ambient temperature.

Abstract: The present disclosure discloses a heat treatment method for a bainitic turnout rail, which includes: naturally cooling the turnout rail at a temperature in an austenite region after being finishing rolled to 450-480° C. at a tread center of a rail head of the turnout rail; accelerated cooling the naturally cooled turnout rail to 230-270° C. at the tread center of the rail head, a cooling rate at the tread center and a non-working side of the rail head being 1.5-5.0° C./s, a cooling rate at the working side of the rail head increasing by 0.1-1.0° C./s based on 1.5-5.0° C./s; continuously accelerated cooling the working side, the tread center and the non-working side of the rail head at a cooling rate of 0.05-0.25° C./s to decrease a temperature of the tread center of the rail head to 265-270° C.; and finally, naturally cooling the turnout rail to an ambient temperature.