The present disclosure relates to an emergency lighting circuit, a control method thereof and an emergency lighting system. Normal lighting is monitored by detecting whether a charging management apparatus in the emergency lighting circuit has electric energy input. When the charging management apparatus has no electric energy input, emergency lighting may be started, and power transmitted to load lighting equipment is switched to an emergency battery apparatus through a power supply switching apparatus, which is processed by a boost inverter to provide appropriate electric energy for the load lighting equipment. A power detection apparatus detects an input-terminal power signal of the boost inverter, and regulates power of the load lighting equipment based on the input-terminal power signal. Operating power of the load lighting equipment is regulated based on the input-terminal power signal of the boost inverter. An input-terminal voltage of the boost inverter is a DC low voltage and easy to detect. Moreover, in the solution, high voltage and current are not required to be isolated for power detection, which effectively reduces detection costs and is highly reliable in power detection.

The present disclosure relates to an emergency lighting circuit, a control method thereof and an emergency lighting system. Normal lighting is monitored by detecting whether a charging management apparatus in the emergency lighting circuit has electric energy input. When the charging management apparatus has no electric energy input, emergency lighting may be started, and power transmitted to load lighting equipment is switched to an emergency battery apparatus through a power supply switching apparatus, which is processed by a boost inverter to provide appropriate electric energy for the load lighting equipment. A power detection apparatus detects an input-terminal power signal of the boost inverter, and regulates power of the load lighting equipment based on the input-terminal power signal. Operating power of the load lighting equipment is regulated based on the input-terminal power signal of the boost inverter. An input-terminal voltage of the boost inverter is a DC low voltage and easy to detect. Moreover, in the solution, high voltage and current are not required to be isolated for power detection, which effectively reduces detection costs and is highly reliable in power detection.

A power control method for a charging system includes: detecting a power signal and an input voltage of the power signal; determining a charging protocol supported by the power signal; and determining whether to conduct a power switching circuit or not according to the input voltage of the power signal and the charging protocol supported by the power signal to provide power for an amplifier chip of the charging system.

An electronic device includes a display module including a first region exposed to an outside in first and second modes and a second region extending from the first region, where the second region is partially opposite to the first region in the first mode or is partially exposed in the second mode, the second region includes a curved region in the first mode and a flat region extending from the curved region and opposite to the first region, a supporting member disposed below the display module, a case which contains the display module and the supporting member, where the first and second modes are determined based on a sliding motion of the case, and a wireless charging coil which is contained in the case and shielded by the supporting member in the first mode, and does not overlap the supporting member in the second mode.

An electronic device includes a display module including a first region exposed to an outside in first and second modes and a second region extending from the first region, where the second region is partially opposite to the first region in the first mode or is partially exposed in the second mode, the second region includes a curved region in the first mode and a flat region extending from the curved region and opposite to the first region, a supporting member disposed below the display module, a case which contains the display module and the supporting member, where the first and second modes are determined based on a sliding motion of the case, and a wireless charging coil which is contained in the case and shielded by the supporting member in the first mode, and does not overlap the supporting member in the second mode.

Provided is a power supply and distribution system, the power supply and distribution system includes at least one non-isolated AC/DC converter unit, an MV DC bus and multiple isolated DC/DC converter units, and the at least one non-isolated AC/DC converter unit is connected between an MV AC grid and the MV DC bus, and is configured to convert an input MV AC voltage to an output MV DC voltage, where the output MV DC voltage is fed into the MV DC bus, the multiple isolated DC/DC converter units are connected to the MV DC bus in parallel via MV class cables, and are configured to convert a voltage level from the MV DC bus to a charging voltage level. The power supply and distribution system can be used for charging the EVs.

A charging cabinet includes a power conversion circuit, an input interface, and a plurality of output interfaces. An input end of the power conversion circuit is connected to the input interface. The power conversion circuit converts an alternating current supplied by an alternating current power grid into a direct current, and then charges a plurality of battery packs by using the direct current.

A charging cabinet includes a power conversion circuit, an input interface, and a plurality of output interfaces. An input end of the power conversion circuit is connected to the input interface. The power conversion circuit converts an alternating current supplied by an alternating current power grid into a direct current, and then charges a plurality of battery packs by using the direct current.

A wireless charging receiving apparatus includes a wireless charging conversion module, a charging management module, a voltage combination module and at least two wireless charging receiving coils. The at least two wireless charging receiving coils are used to couple with a wireless charging transmitting coil in a wireless charging transmitting apparatus and output alternating-current electromagnetic induction signals to the voltage combination module; the voltage combination module is used to carry out voltage superposition on the alternating-current electromagnetic induction signals output by the at least two wireless charging receiving coils and output superposed alternating-current electrical signals to the wireless charging conversion module; the wireless charging conversion module is used to convert received alternating-current electrical signals into direct-current electrical signals, and output the direct-current electrical signals to the charging management module; and the charging management module is used to charge a battery by means of received direct-current electrical signals.

A wireless charging receiving apparatus includes a wireless charging conversion module, a charging management module, a voltage combination module and at least two wireless charging receiving coils. The at least two wireless charging receiving coils are used to couple with a wireless charging transmitting coil in a wireless charging transmitting apparatus and output alternating-current electromagnetic induction signals to the voltage combination module; the voltage combination module is used to carry out voltage superposition on the alternating-current electromagnetic induction signals output by the at least two wireless charging receiving coils and output superposed alternating-current electrical signals to the wireless charging conversion module; the wireless charging conversion module is used to convert received alternating-current electrical signals into direct-current electrical signals, and output the direct-current electrical signals to the charging management module; and the charging management module is used to charge a battery by means of received direct-current electrical signals.