33results about How to "Reduce static loss" patented technology

The invention discloses a charging system based on secondary control, comprising: a transformer; a rectification device; a secondary rectification switch tube and a secondary synchronous rectification auxiliary chip, and the secondary synchronous rectification auxiliary chip controls the opening and closing of the secondary rectification switch tube , and control the secondary rectifier switch tube according to the received transmission signal of the charging interface to adjust the sudden voltage generated at both ends of the secondary winding, and generate an output voltage switching signal when the adjusted sudden voltage is fed back to the auxiliary winding; the primary The control chip and the primary switch tube, the primary control chip generates a gate signal when it collects the output voltage switching signal, and controls the primary switch tube according to the gate signal, the voltage detected by the voltage detection terminal and the feedback voltage of the voltage feedback terminal to adjust the system output voltage and output current. The charging system can intelligently change the charging output specification according to the load. The invention also discloses a secondary control device of the charging system based on secondary control.

The invention discloses a static loss control system of vehicle-mounted charging controller, which comprises a charging controller, wherein the charging controller includes a switch unit, a control unit and a pulse trigger unit, the pulse trigger unit is separately electrically connected with a vehicle-mounted power source and the switch unit, the pulse trigger unit is used for inducting pulse signal sent from a power supply unit to control the conduction of the switch unit, and the switch unit controls the on-off of a circuit between the control unit and the vehicle-mounted power source. The static loss control system of vehicle-mounted charging controller of the invention is provided with the pulse trigger unit, which is used for inducting pulse signal sent from a power supply device to control the conduction of the switch unit, thereby realizing the monitoring of connection state of the power supply device and a battery pack to be charged. Only when the power supply device is being connected will the pulse trigger unit respond and control the conduction of the switch unit, thereby reducing the static loss of the vehicle-mounted power source (vehicle-mounted storage battery) effectively.

The invention discloses a gate-controlled gallium oxide field effect transistor based on a p-i-n structure and a preparation method thereof, which mainly solves the problem that the current n-type gallium oxide field effect transistor has a low breakdown voltage and is difficult to turn off. Its bottom-up includes: Ga 2 o 3 Substrate, n‑Ga 2 o 3 An epitaxial layer, the two ends of the upper part of the epitaxial layer are provided with an ion implantation area, and the middle area is provided with a gate electrode; the upper part of the ion implantation area is respectively provided with a source electrode and a drain electrode; the inner surface and the gate electrode are respectively connected to the source electrode and the drain electrode n‑Ga between 2 o 3 Al on top of the epitaxial layer 2 o 3 protective layer; i-Ga between the epitaxial layer and the gate electrode 2 o 3 thin film layer and p-type NiO thin film layer, the p-type NiO thin film layer, i-Ga 2 o 3 thin film layers and n‑Ga 2 o 3 The epitaxial layers form a p‑i‑n structure. The invention improves the performance and reliability of the device and can be used to prepare enhanced gallium oxide devices with high breakdown voltage.

The invention relates to a soft-starting circuit of power supply, belonging to the technical field of power control. The soft-starting circuit is arranged between the power supply and a main body unit. One input end of the main body unit is connected with an output end of the power supply. The soft-starting circuit comprises a switch unit, a current limit unit, an energy storage unit and a control unit, wherein the switch unit is connected with the current limit unit in parallel, the front end of a parallel branch thereof is connected to another output end of the power supply, and the rear end of the parallel branch is connected to one end of the energy storage unit and another output end of the main body unit; the other end of the energy storage unit is connected to one output end of thepower supply; a first end of the control unit is connected to a control end of the switch unit, and a second end of the control unit is connected to a control end of the main body unit; and the control unit controls the disconnection and the connection of the switch unit so as to control the power supply to supply power to the main body unit. The technical scheme can reduce the energy consumptionand protect the power supply.

The invention discloses a battery power supply circuit and a power source with the same. The battery power supply circuit comprises a delay module used to delay the transmission of an input voltage to an input control chip, an input control module used to transmit the input voltage to a voltage control module when a post-stage circuit is in a non-dormant mode, an input filter module used to filter the input voltage transmitted by the input control module to the voltage control module, the voltage control module used to boost the input voltage and output the boosted input voltage to the post-stage circuit through an output filter module when the input voltage transmitted by the input control module is lower than the voltage required by the post-stage circuit, and the output filter module used to filter an output voltage signal output by the voltage control module to the post-stage circuit. By adopting the battery power supply circuit and the power source of the invention, the static loss and standby loss of a booster circuit are reduced, the service time of batteries is prolonged, and the utilization rate of batteries is increased.

The embodiment of the present invention discloses a solar controller circuit. The solar controller circuit includes a main battery, a backup battery, a circuit switching module, an MCU, and a voltage divider module. One end; the second end of the voltage divider module is connected to the input terminal I1 of the MCU; the first end of the circuit switching module is connected to the positive pole of the main battery or the positive pole of the backup battery, and the second end of the circuit switching module is connected to the first output terminal of the MCU O1; the negative pole of the main battery and the negative pole of the backup battery are connected to the second output terminal O2 of the MCU; the MCU is used to use the voltage divider module to send The switching control signal, the circuit switching module is used to receive the switching control signal, and switch the first end of the circuit switching module from being connected to the positive pole of the main battery to being connected to the positive pole of the backup battery. Implementing the embodiment of the present invention is beneficial to reducing static loss and improving safety.

The loss in a current supply circuit including an inverter having a switching element is reduced. The dynamic loss of the IGBT element including a free wheel diode is proportional to the product of a turn-on loss and a switching frequency while the static loss is proportional to the product of a current flowing to the IGBT element and a saturation voltage between the collector and emitter. Even if the resistance of the IGBT element is increased by twice, the saturation voltage between the collector and the emitter is not increased by twice. Accordingly, the voltage and current given to the load are multiplied by 2 and 1 / 2, respectively, so that the powers given to the load are identical. Moreover, it is possible to reduce the static loss even if the dynamic losses are identical.

The invention provides a vehicle auxiliary power supply circuit and system, comprising a constant power input module, a wake-up signal input module, a power management module, a control module, a wake-up signal detection module and a power delay power-off module; an output end of the constant power input module, The output terminals of the wake-up signal input module are respectively electrically connected with the input terminals of the power management module, the output terminals of the power management module are electrically connected with the input terminals of the control module; the output terminals of the wake-up signal detection module are electrically connected with the input terminals of the control module, and control the The output end of the module is electrically connected with the input end of the power supply delay power-off module, and the output end of the power supply delay power-off module is electrically connected with the input end of the power supply management module. After the electric vehicle key is turned off, it can ensure the time-sharing of each high-voltage relay and save the corresponding information when the whole vehicle is powered off. At the same time, it enters the sleep state after a period of time, reduces its static current and reduces the static loss of the low-voltage battery. The advantage of increasing the service life of the battery.