Battery equilibrium charging and detecting and repairing device

Abstract

The invention discloses a battery equilibrium charging and inspecting and repairing device comprising a power circuit, an electronic switching circuit, a detecting control circuit and a charging pending / detecting pending battery unit, wherein both ends of each battery in the battery unit are respectively connected to at least one electronic switch in the electronic switching circuit; each electronic switch is an NMOS logic circuit working in the switch status, and the logic control end of the NMOS logic circuit is connected to the grid electrode of a corresponding N-type field effect tube; and the logic control end of each electronic switch connected to the anode of each battery is also provided with a subcircuit connected to a negative power supply by a resistor. The battery equilibrium charging and inspecting and repairing device can realize charging autoadaptation and carries out any combination of equilibrium charging on each battery in the battery unit; the full N-type field effect tube is adopted, enabling the circuit to be simpler and more reliable; and linear isolation measurement and multiple safety isolation are adopted, thereby solving the problems of danger, low precision and virtual ground of measurement and control. The invention can also be used as a battery load on-line tester.

Description

technical field [0001] The invention relates to a battery charging device, in particular to a battery balancing charging and detection and repairing device. Background technique [0002] Valve-regulated sealed lead-acid batteries (VRLA) are still widely used as power sources for electric vehicles due to their advantages of low price, large capacity, high efficiency, and good reliability. In practical applications, more than two batteries are often connected in series to form a battery pack to provide power. When the battery capacity is insufficient, it can be charged by the charging device to realize repeated use. [0003] For this battery pack that works together in series, the current common battery charging device uses a series charging circuit, that is, the positive pole of the DC output terminal of the charger is connected to the positive pole of the first battery in the series battery pack; while the series battery pack The negative terminal of the last battery is co...

AI Technical Summary

Problems solved by technology

Although there is also a solution of using special switching elements to isolate the loop voltage, but due to the high price of these special components, products using this technical solution cannot be popularized in the market.

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