Non-polar inverter

Abstract

The invention discloses a non-polar inverter which comprises an automatic positive-connection and negative-connection polarity matching circuit and a direct-current and alternating-current conversion circuit, wherein the automatic positive-connection and negative-connection polarity matching circuit is connected with the output end of a storage battery, the input end of the direct-current and alternating-current conversion circuit is connected with the output end of the automatic positive-connection and negative-connection polarity matching circuit, the direct-current and alternating-current conversion circuit is connected with a load; and the automatic positive-connection and negative-connection polarity matching circuit comprises a storage battery input electrode, a triode and a relay which are connected with the storage battery input electrode, and an optical coupler connected with the relay. According to the invention, the automatic positive-connection and negative-connection polarity matching circuit is connected with a storage battery electrode and automatically selects a circuit according to the matching of the relay and the triode, so that an input current of the storage battery is matched with a circuit of the non-polar inverter automatically, whether the storage battery is normally polarly connected with the non-polar inverter or inversely connected with the non-polar inverter, the non-polar inverter can normally work, thus the storage battery and the inverter are effectively protected.

Description

Technical field: [0001] The invention relates to the technical field of inverter products, in particular to an easy-to-use non-polar inverter. The invention can be widely used in many devices such as solar batteries and vehicle batteries. Background technique: [0002] An inverter is a device that converts DC power (battery, storage battery) into AC power (generally 220v50HZ sine or square wave). Typically, an inverter consists of an inverter bridge, control logic, and filter circuits. Widely used in air conditioners, automobiles, electric tools, sewing machines, computers, televisions, washing machines, refrigerators, video recorders, massagers, lighting and other products or equipment. [0003] Inverters are widely used in automotive batteries. In recent years, with the development of solar photovoltaic cells, inverters have also been widely used in solar battery equipment. However, the current inverter still has the following deficiencies during use: [0004] 1. In the...

AI Technical Summary

Problems solved by technology

If the connection is wrong, there may be damage to the equipment circuit

For some ordinary users, it is difficult to distinguish the positive and negative input ports of the inverter and the battery, and errors are prone to occur during the connection process.

[0005] 2. The existing inverters have shortcomings such as insufficient safety, low service life, and excessive loss, which need to be further improved

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