Quick charger of power-saving storage battery and intelligent charging method

Abstract

The invention relates to a device which realizes pulse-free transformer voltage-reduction by a pulse-width modulation voltage-reduction mode to enable the efficiency of a charger to be enhanced. A quick charger induces short-time discharge pulse during charging in order to enhance the charging current receptance and achieves the quick charging purpose by depolarization; in the prior art, the discharge current is consumed and wasted uselessly, but the device absorbs the energy of pulse discharged by a storage capacitor and feeds back the energy to a charging circuit to realize back discharge, thereby enhancing the energy utilization efficiency and achieving the dual purposes of quick charge and energy saving. The essential resistance, the voltage and the temperature parameter of a storage battery are detected online in real time, fed back to an intelligent control part of the charger and used for judging the charged state and safety condition of the storage battery to continuously adjust the charging strategy so as to form a complete closed-loop control till the storage battery is charged fully. A safe (i.e. protective measures during charging the storage battery are safe), quick, efficient and intelligent charging process is realized.

Description

Technical field [0001] The invention relates to a battery fast charger and a charging method, in particular to a power-saving battery fast charger and an intelligent charging method, belonging to the field of battery fast charging. Background technique [0002] Now let’s explain the battery charging equipment used in electric vehicles: After investigation and information review, the State Intellectual Property Office announced: the battery pulse fast charger and its charging method with the application number 01126621.X, and the electric vehicle with the application number 200710045718.2 The fast charger patent for the storage battery, its battery charging power supply adopts the switching power supply mode, that is, the 220V alternating current is used to generate direct current after rectification and filtering, and then converted into high-frequency pulse by high-frequency power switch, and then stepped down by high-frequency pulse transformer After being rectified and fi...

AI Technical Summary

Problems solved by technology

However, the above-mentioned charger patent performs a pulse discharge at regular intervals during the pulse fast charging process, and the discharge current is closed by an external resistor, resulting in wasteful consumption of electric energy in the form of heat, which reduces the efficiency of the fast charger.

[0006] Third, the application number is 200710045718.2 for the patent of fast charger for electric vehicle storage battery, the intelligent control described is limited to the control program of the charging process of charging→stop charging→discharging→stop discharging→charging using a microprocessor or a single-chip microcomputer, Far away from truly intelligent charging

Images