Super capacitor-batteries composite power supply system and power supply method thereof

Abstract

The invention discloses a super capacitor-batteries composite power supply system, which comprises an AC/DC converter, a super capacitor, a two-way DC/DC converter and a battery pack, wherein the AC/DC converter is connected to electric supply, converts an AC into a DC and charges the super capacitor; the super capacitor is connected to the two-way DC/DC converter and electric equipment, supplies electricity to the electric equipment, charges the battery pack through the two-way DC/DC converter and obtains the electricity discharged from the battery pack through the two-way DC/DC converter; the two-way DC/DC converter is connected with the AC/DC converter and the battery pack, and is used for achieving power transferring between the battery pack and the super capacitor; and the battery pack charges the super capacitor through the two-way DC/DC converter and obtains the electricity discharged from a super capacitor module through the two-way DC/DC converter. The super capacitor-batteries composite power supply system is long in power supply time, long in service lifetime and fast to charge, can be used for 500,000-1,000,000 in cycle, and can stably correspond to high-power output states of startup, climbing and the like; the battery pack is an emergency power supply, and is rarely used; and an environment-friendly material is adopted by the super capacitor, so that the environment is not polluted; and the power supply system is safe.

Description

technical field [0001] The invention relates to the field of supercapacitor and battery composite power supply, in particular to a supercapacitor and battery composite power supply system and a power supply method thereof. Background technique [0002] Existing mobile power supply systems mainly use a single lead-acid battery for direct charge and discharge, a single lithium battery for direct charge and discharge, or a single polymer battery for direct charge and discharge. However, there are defects such as long charging time, short life cycle, inability to charge online, insufficient power when high power output is required for climbing start, power cannot be replenished, bulky, and serious pollution. Although the lithium battery solution solves part of the power compensation problem and slightly improves the service life, it has the disadvantage of slow charging, long-term uninterrupted use will generate heat, continuous use, and high-power charging and discharging will ...

AI Technical Summary

Problems solved by technology

[0002] Existing mobile power supply systems mainly use a single lead-acid battery for direct charge and discharge, a single lithium battery for direct charge and discharge, or a single polymer battery for direct charge and discharge. However, there are defects such as long charging time, short life cycle, inability to charge online, insufficient power when high power output is required for climbing start, power cannot be replenished, bulky, serious pollution, etc.

Although the lithium battery solution solves part of the power compensation problem and slightly improves the service life, it has slow charging, long-term uninterrupted use will generate heat, continuous use, and high-power charging and discharging will cause heat accumulation, fire or even explosion.

Polymer batteries, like lithium batteries, present a fire hazard

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