5G base station energy storage and power supply system based on echelon utilization battery active equalization control

Abstract

The invention discloses a 5G base station energy storage and power supply system based on echelon utilization battery active equalization control, which comprises an echelon utilization lithium ion battery pack, a battery manager, a bidirectional inverter, an active equalization control device, a protection device and a 5G base station load, and is characterized in that a power grid charges the echelon utilization battery pack through the bidirectional inverter; the echelon utilization battery pack is connected with the 5G base station load through the bidirectional inverter; and the active equalization control device mainly comprises an equalization controller, a transformer, a battery pack monitor and the like. In the energy storage and power supply system, the equalization control device realizes active equalization of the echelon utilization battery pack by redistributing charges during charging, so that each single battery with different performance in the battery pack reaches a full-capacity state, the use of the echelon utilization battery in the energy storage and power supply system is promoted, and the service life of the echelon utilization battery is prolonged.

Description

technical field [0001] The patent of the invention belongs to the field of power management and electrical signal detection, and specifically relates to a 5G base station energy storage and power supply system based on cascade utilization of battery active balance control. Background technique [0002] The service life of new energy vehicle power batteries is generally about 3-5 years, and the lithium-ion batteries of its key components need to be replaced when their performance drops to about 80%; and these decommissioned batteries still have 70%-80% of their initial performance , so it can continue to meet the application of energy storage batteries. [0003] Usually, communication base stations use lead-acid battery packs as energy storage and power supply systems. However, due to the high power consumption of 5G communication base stations, lead-acid batteries with relatively low energy density are difficult to support. In addition, large-scale use of lead-acid batteries...

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Problems solved by technology

[0003] Usually, communication base stations use lead-acid battery packs as energy storage and power supply systems. However, due to the high power consumption of 5G communication base stations, lead-acid batteries with relatively low energy density are difficult to support. In addition, large-scale use of lead-acid batteries will also cause environmental pollution. Pollution and the trouble of subsequent recycling. Therefore, using a lithium-ion battery pack energy storage system based on cascade utilization to supply power to 5G communication base stations to ensure uninterrupted work of 5G communication base station loads can not only promote environmental protection, but also greatly reduce operating costs. cost

[0004] However, as time goes by, the different performance characteristics of the single cells in the cascade utilization battery pack will be further amplified. If the battery pack is not balanced when charging, the weak battery unit will reach full capacity before the strong battery unit. Inconsistent charging and discharging of the battery pack, resulting in short battery life and increased costs due to frequent battery replacement

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