Multifunctional integrated charger for electric automobile having compensation charging function

An electric vehicle, multi-functional technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve the problem that auxiliary batteries cannot recover braking energy.
CN101499673AInactive Publication Date: 2009-08-05TIANJIN QINGYUAN ELECTRIC VEHICLE
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN QINGYUAN ELECTRIC VEHICLE
Publication Date
2009-08-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of charging technology of an electric automobile and relates to a multifunctional integrated charging machine which is used for the electric automobile and has a compensation charging function. The multifunctional integrated charging machine comprises a rectifier bridge, an inverter charging circuit, a control circuit, a contactor group, a power battery, an auxiliary battery, a brake feedback energy detection circuit, a power battery energy detection circuit and an auxiliary battery energy detection circuit; the output terminal of the rectifier bridge is connected with the inverter charging circuit which comprises a capacitance filter circuit, an IGBT inverter bridge with the duty cycle controlled by the control circuit, a high-frequency transformer and a rectifier filter circuit; different charging modes are changed by controlling the contactor group. The multifunctional integrated charging machine highly integrates four charging functions including compensation charging and the like into a charging machine, improves the integrity of the charging machine and leads the electric automobile to recover more brake energy.
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Description

technical field

[0001] The invention belongs to the technical field of electric vehicle charging, and relates to a multifunctional integrated charger with compensation charging. technical background

[0002] The conventional charging of electric vehicles mainly includes the following three aspects:

[0003] 1. During the parking charging process, the power battery is charged from the AC grid (referred to as "power charging") to supplement the energy of the power battery;

[0004] 2. During the braking process, the braking energy is fed back to the power battery for charging (referred to as "feedback charging"), in order to recover the braking energy of the vehicle and improve the energy utilization rate;

[0005] 3. During driving, the power battery floats and charges the auxiliary battery (hereinafter referred to as "float charging"), in order to maintain the energy of the auxiliary battery and cooperate with the auxiliary battery to provide low-voltage power supply for th...

Claims

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