4results about How to "Avoid current shock" patented technology

This invention discloses an integrated cable anti-drag storage device and method for car charging piles, applied in the field of car charging pile technology. The key technical points are: it includes a base and a charging pile body fixedly connected to the base; the charging pile body has a charging gun head based on the cable; a mounting base is externally fixedly connected to the charging pile body; a first cable storage component, a release restriction component, and a second cable storage component are sequentially arranged along the cable direction within the mounting base; a lever lifting component is also provided on the base; a locking release component is fitted and fixedly connected to the charging gun head; and a buzzer for emitting an alarm sound and a fault indicator light for indicating a malfunction are fixedly provided on the charging pile body. The technical effects are: preventing the charging cable from being dragged while reducing the possibility of damage to the charging gun and improving charging safety.

The utility model relates to the technical field of power electronic technology, and discloses an energy-saving electromagnet driving control circuit. The working power supply module is used for supplying power to a CPU control module and a control output module; the commercial power zero-crossing detection module is used for detecting a zero-crossing signal of commercial power; the CPU control module is used for outputting a working signal or a stop signal of a driving electromagnet according to a received key signal; the control driving module is used for waiting for a zero-crossing signal after the working signal or the stop signal and outputting a corresponding control signal to the control output module to drive an electromagnet; the control output module waits for a mains supply zero-crossing signal after receiving the working signal or the stop signal, and then outputs a control signal to the control output module so as to drive the electromagnet to work and stop; the on-off of the electromagnet is controlled during mains supply zero passage, so that current impact generated by on-off at a voltage peak value can be avoided, the energy loss of the electromagnet during starting and stopping is reduced, and the energy-saving effect is improved.

The invention provides a start control method and device for an energy type flexible direct current system, and relates to the technical field of flexible direct current power transmission of a power system, and the method comprises the steps: 1, controlling a protection unit to be powered on, and completing hardware self-inspection and software initialization; and step 2, based on hardware self-inspection and software initialization, setting a converter station control mode, controlling a secondary side switch of the converter transformer to be closed, pre-charging the direct current bus through the converter valve module until the voltage of the direct current bus reaches a target pre-charging voltage, and meanwhile, keeping the super-capacitance branch module in an off state. According to the invention, the impact current when the energy storage branch is input is reduced, and the safety of the system starting process and the equipment reliability are improved.

The application discloses a super capacitor energy storage power energy optimization system based on a Boost converter, relates to the technical field of power supply or power distribution circuit devices and electric energy storage systems, and comprises a pre-charging circuit, a super capacitor energy storage device, a Boost circuit, an LLC full-bridge inverter circuit, a rectification filtering and buffering circuit, a detection unit and a controller. The Boost circuit is connected between the super capacitor energy storage device and the LLC full-bridge inverter circuit and is used for boosting voltage when the output voltage of the super capacitor energy storage device is lower than a preset threshold value. The data acquisition unit acquires data to regulate and control the boosting work of the Boost circuit and the driving logic of the LLC full-bridge inverter circuit. The application adds the Boost circuit between the super capacitor energy storage device and the full-bridge inverter circuit, and solves the problems of low energy utilization rate and unstable output of the existing super capacitor energy storage high-voltage power supply.