A high-voltage distribution box for an energy storage system of a retired battery pack

Abstract

The invention relates to the technical field of cascade utilization of retired batteries, and discloses a high-voltage power distribution box of an energy storage system of a retired battery pack, comprising a power distribution box main body, and a BMU / ISO is fixedly installed on the back of the cavity of the power distribution box main body. Integrated board, AC / DC power supply is fixedly installed on the right side of the BMU / ISO integrated board, precharge relay is fixedly installed on the front of the BMU / ISO integrated board, and precharge relay is fixedly installed on the right side of the precharge relay resistance. The high-voltage distribution box of the energy storage system of the retired battery pack controls the main positive relay, main negative relay and precharge relay through the BMS, so as to control the charging and discharging of the battery, because the BMS is a battery management system, which is a battery The link between the user and the system can improve the utilization rate of the battery and prevent the battery from overcharging and overdischarging.

Description

technical field [0001] The invention relates to the technical field of cascade utilization of retired batteries, in particular to a high-voltage power distribution box of an energy storage system of a retired battery pack. Background technique [0002] As of June 2019, the total number of new energy vehicles promoted in my country has exceeded 3.44 million, the energy density of power batteries has tripled compared to 2012, and the price per kilowatt-hour has dropped by more than 70%. The data shows that in 2020, the recycling volume of vehicle power batteries in my country will reach 257,000 tons, and in 2022, this figure will be 422,000 tons. According to the statistics of the Minmetals Economic Research Institute, the scale of power battery recycling will reach 10.7 billion yuan in 2020, of which the scale of the cascade utilization market will be about 6.4 billion yuan; by 2025, the total market size will reach 37.9 billion yuan, of which the market of cascade utilizatio...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-voltage power distribution box for the energy storage system of decommissioned battery packs, which has the advantages of redesigning the size of relays and wires to save production costs, increasing the design of pre-charging and the design of the main and negative circuits to reduce the number of relays. The risk of adhesion failure improves the safety of the system, and solves the problem that the traditional disposal of waste lithium batteries is directly scrapped, which will not only cause waste of resources, but also cause great harm to the environment.

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