Abstract: The multi-temperature control cabinet includes a cabinet body, a cabinet door, and a refrigerating system. The refrigerating system includes at least one air conditioner, at least one direct ventilation unit, and an environment monitoring apparatus. Both the air conditioner and the direct ventilation unit are disposed on the cabinet door, and the air conditioner and the direct ventilation unit are disposed in parallel in a height direction of the cabinet door. An air guide assembly is disposed between the direct ventilation unit and an air exhaust vent of the air conditioner. The environment monitoring apparatus is connected to both the air conditioner and the direct ventilation unit, and the environment monitoring apparatus is configured to monitor temperature and humidity in the cabinet body, and control turning-on and turning-off of the air conditioner and the direct ventilation unit based on the temperature and the humidity in the cabinet body.

Abstract: A communication power supply system includes an alternating current power distribution module, a rectifier module, a monitoring module, a direct current power distribution module, and a signal-driven collection board. The monitoring module sends a control signal to the direct current power distribution module by using the signal-driven collection board, where the control signal is used to control the closing or opening of a circuit in the direct current power distribution module. The communication power supply system uses the monitoring module to control the direct current power distribution module, to control whether to power on the loads connected to the direct current power distribution module.

Abstract: A charging system includes one or more direct current-to-direct current conversion modules, a first power sharing bus, a second power sharing bus, at least one first output end, and at least one second output end. The direct current-to-direct current conversion module includes at least one first energy supply unit and at least one second energy supply unit. The first energy supply unit is coupled to the first power sharing bus. The second energy supply unit is coupled to the first power sharing bus and the second power sharing bus. The first output end is coupled to the first power sharing bus. The second output end is coupled to the second power sharing bus. A maximum output power of the first output end is different from a maximum output power of the second output end.

Abstract: A charging system includes n first charging modules, a first switch matrix, a second switch matrix, and m first output apparatuses. Each first charging module includes a plurality of first power converters, each first power converter has one output bus, the output bus of the first power converter is connected to the first switch matrix. The first switch matrix is configured to connect or disconnect output buses of any two of the plurality of first power converters. The first output apparatus j is connected to a corresponding first charging module by using the second switch matrix. The second switch matrix is configured to transmit, to the first output apparatus j, electric energy on an output bus of a first power converter in any first charging module corresponding to the first output apparatus j.

Abstract: In the power source switching control system, a circuit breaker includes a controller and an on/off apparatus. The controller controls, based on a signal of a monitor, the on/off apparatus to adjust an on/off state of a power source connected to the circuit breaker, that is, adjust, from an on state to an off state based on a switch-off signal of the monitor, a working power source that is currently working, and adjust a backup power source from an off state to an on state based on a switch-on signal of the monitor, to implement a process of power source switching between the working power source and the backup power source.

Abstract: A power supply system includes a mains system, a renewable energy conversion unit, a fossil energy conversion unit, and a control unit. Because electric energy converted from renewable energy is cheaper than electric energy converted from fossil energy, the renewable energy conversion unit is added to the power supply system. When the mains system is abnormal, the control unit preferentially enables the renewable energy conversion unit to provide electric energy. If electric energy provided by the mains system and the renewable energy conversion unit still cannot meet a power supply requirement, the control unit starts the fossil energy conversion unit to provide electric energy. In this way, electricity consumption costs of a user are reduced as much as possible, and commercial competitiveness of the power supply system is improved.

Abstract: A reverse power connection preventing circuit includes a diode and an actuation unit that are connected in series between a positive input terminal and a negative input terminal of a circuit breaker. A positive electrode of the diode points to the negative input terminal of the circuit breaker, and a negative electrode of the diode points to the positive input terminal of the circuit breaker. When a power supply is forward connected to the circuit breaker, the diode is cut off, there is no current on the actuation unit, and the reverse power connection preventing circuit is in a power-off state. When the power supply is reversely connected to the circuit breaker, the diode conducts, and the actuation unit is configured to prevent closing of the circuit breaker, and/or the actuation unit is configured to perform an alarm prompt, to perform an early warning.

Abstract: The energy storage system includes battery cells, a subrack, a backplane, and a battery management system BMS. The subrack reserves a plurality of battery cell slots, the battery cells are connected to the backplane through the battery cell slots. The backplane is installed in the subrack, a first power terminal is reserved at a position corresponding to the battery cell slot on the backplane, and a plug-in power terminal is formed by a second power terminal of the battery cell together with the first power terminal. A power circuit, a sampling circuit, and an equalizer circuit are integrated into the backplane, and the power circuit, the sampling circuit, and the equalizer circuit are connected after the second power terminal is plugged and docked with the first power terminal. The BMS is connected to the backplane for managing the energy storage system.

Abstract: A reverse power connection preventing circuit includes a diode and an actuation unit that are connected in series between a positive input terminal and a negative input terminal of a circuit breaker. A positive electrode of the diode points to the negative input terminal of the circuit breaker, and a negative electrode of the diode points to the positive input terminal of the circuit breaker. When a power supply is forward connected to the circuit breaker, the diode is cut off, there is no current on the actuation unit, and the reverse power connection preventing circuit is in a power-off state. When the power supply is reversely connected to the circuit breaker, the diode conducts, and the actuation unit is configured to prevent closing of the circuit breaker, and/or the actuation unit is configured to perform an alarm prompt, to perform an early warning.

Abstract: Embodiments of this application provide a base station control method, an operations support system (OSS), and a distributed base station system (DBS) one example method, if first running data of a first base station unit that is in a power-on state or a wake-up state in the base station indicates that the first base station unit is in a low bearing capacity state, the OSS controls the first base station unit to enter a power-off state or a sleep state.

Abstract: The multi-temperature control cabinet includes a cabinet body, a cabinet door, and a refrigerating system. The refrigerating system includes at least one air conditioner, at least one direct ventilation unit, and an environment monitoring apparatus. Both the air conditioner and the direct ventilation unit are disposed on the cabinet door, and the air conditioner and the direct ventilation unit are disposed in parallel in a height direction of the cabinet door. An air guide assembly is disposed between the direct ventilation unit and an air exhaust vent of the air conditioner. The environment monitoring apparatus is connected to both the air conditioner and the direct ventilation unit, and the environment monitoring apparatus is configured to monitor temperature and humidity in the cabinet body, and control turning-on and turning-off of the air conditioner and the direct ventilation unit based on the temperature and the humidity in the cabinet body.

Abstract: In the power source switching control system, a circuit breaker includes a controller and an on/off apparatus. The controller controls, based on a signal of a monitor, the on/off apparatus to adjust an on/off state of a power source connected to the circuit breaker, that is, adjust, from an on state to an off state based on a switch-off signal of the monitor, a working power source that is currently working, and adjust a backup power source from an off state to an on state based on a switch-on signal of the monitor, to implement a process of power source switching between the working power source and the backup power source.

Abstract: A communication power supply system includes an alternating current power distribution module, a rectifier module, a monitoring module, a direct current power distribution module, and a signal-driven collection board. The monitoring module sends a control signal to the direct current power distribution module by using the signal-driven collection board, where the control signal is used to control the closing or opening of a circuit in the direct current power distribution module. The communication power supply system uses the monitoring module to control the direct current power distribution module, to control whether to power on the loads connected to the direct current power distribution module.

Abstract: The energy storage system includes battery cells, a subrack, a backplane, and a battery management system BMS. The subrack reserves a plurality of battery cell slots, the battery cells are connected to the backplane through the battery cell slots. The backplane is installed in the subrack, a first power terminal is reserved at a position corresponding to the battery cell slot on the backplane, and a plug-in power terminal is formed by a second power terminal of the battery cell together with the first power terminal. A power circuit, a sampling circuit, and an equalizer circuit are integrated into the backplane, and the power circuit, the sampling circuit, and the equalizer circuit are connected after the second power terminal is plugged and docked with the first power terminal. The BMS is connected to the backplane for managing the energy storage system.