3results about How to "Increase mutual inductance" patented technology

The utility model discloses a coupling inductance device which comprises an insulating magnetic core, at least two grooves are arranged in the insulating magnetic core, and the at least two grooves are arranged at intervals along a first direction; the windings are positioned in the grooves in a one-to-one correspondence manner; the insulating magnetic core further comprises at least one containing hole, the containing hole extends in the second direction and is located between every two adjacent grooves, every two adjacent grooves in the first direction are connected through one containing hole, and the second direction and the first direction intersect. The non-magnetic insulating layer is located in the containing hole, and the coupling coefficient between the two windings is related to the thickness of the non-magnetic insulating layer located between the two windings in the third direction. According to the utility model, the short circuit between the two windings can be avoided, the coupling coefficient of the two windings can be improved, and the energy storage capability and the anti-saturation performance are enhanced.

The application provides an energy storage valve submodule and a high-voltage direct-hanging energy storage system. The energy storage valve submodule comprises a power conversion circuit, a first capacitor, a first energy storage unit and a second energy storage unit. The first capacitor, the first energy storage unit and the second energy storage unit are all connected in parallel with the power conversion circuit. A first connecting line is arranged between the first energy storage unit and the power conversion circuit. A second connecting line is arranged between the second energy storage unit and the power conversion circuit. The difference between the equivalent inductance of the first connecting line and the equivalent inductance of the second connecting line is less than a preset threshold value. The application can inhibit the first energy storage unit and the second energy storage unit from generating an over-limit current at the switching moment when the energy storage valve submodule is put into operation and cut off, thereby reducing damage to the first energy storage unit and the second energy storage unit and improving the stability and reliability of the energy storage valve submodule.

The wireless charging assembly is applied to an electric vehicle, the electric vehicle comprises a vehicle body and a kickstand movably connected with the vehicle body, and the wireless charging assembly is characterized by further comprising a charging module and a receiving module; the charging module comprises a charging circuit and a transmitting coil; the receiving module comprises a receiving circuit and a receiving coil, and the receiving coil is arranged on the foot support; the charging circuit transmits electric energy to the receiving circuit through electromagnetic induction between the transmitting coil and the receiving coil. The electromagnetic induction distance between the transmitting coil and the receiving coil is smaller than 30 mm, and the size ratio of the transmitting coil to the receiving coil is 1.5-3. By optimizing the proportion of the transmitting coil and the receiving coil, higher energy transmission efficiency is achieved, when the size proportion of the transmitting coil and the receiving coil is within 1.5-3, mutual inductance is enhanced, and it can be guaranteed that the charging efficiency is 89% or above.