Replaceable vehicle battery pack for rescue charging and mutual charging method

Abstract

The invention provides a replaceable vehicle battery pack for rescue charging. The replaceable vehicle battery pack comprises multiple clusters of battery packs; a DC / DC charging and discharging module which realizes input and output of electric energy; a main loop port, which is connected with the DC / DC charging and discharging module in parallel to charge or discharge the multiple clusters of battery packs; a charging gun port, which is connected with the DC / DC charging and discharging module in parallel to charge or discharge the multi-cluster battery pack; and a battery management system which collects the parameter state of each battery pack in the multiple clusters of battery packs and inputs the parameter states to the DC / DC charging and discharging module. According to the replaceable vehicle battery pack, communication and electrical solutions are both placed in the replaceable vehicle battery pack for a vehicle in a battery replacement mode, especially for a large replaceable battery system for a heavy-duty vehicle and engineering machinery, the replaceable vehicle battery pack is adopted for mutual charging, and the charging mode is more flexible, so that mutual charging between vehicles can be achieved, and the electric power supplement of the replaceable vehicle battery pack to another replaceable vehicle battery pack can be directly realized.

Description

technical field [0001] The invention relates to the technical field of battery pack manufacturing, in particular to a replaceable vehicle battery pack for rescue charging and a mutual charging method. Background technique [0002] Lithium-ion batteries and new energy electric vehicles have gradually matured in the past ten years and have developed rapidly in our country. Electric energy is the main alternative energy source for vehicles in the future, because electric energy can be converted from various clean and renewable energy sources such as solar energy, water energy, wind energy, and nuclear energy, and it can also reduce the country's dependence on non-renewable energy sources such as petroleum. With the concept of environmental protection, low-carbon economy, and energy consumption reduction being valued by people, the automobile industry is facing increasingly severe challenges due to a series of negative effects such as exhaust emissions polluting the environment ...

AI Technical Summary

Problems solved by technology

However, for long-distance heavy-duty transport vehicles with relatively scattered and wide coverage, or mining machinery / vehicles driving in closed areas, this method of specially configuring charging rescue vehicles has problems such as low utilization rate and untimely deployment, which leads to timeliness and economy. unacceptable

Although the "vehicle-to-vehicle" charging has been studied in the prior art, it is only the scene of vehicle-to-vehicle charging. During the period, the handshake signal, the processing of battery information, and the realization of the mutual charging electrical solution depend on the platform of the vehicle itself, and The application is not flexible and is currently only used in the field of passenger cars

At the same time, most of the mutual charging electrical schemes use DA / AC modules, but the voltage regulation range of DA / AC modules is low, and it cannot realize mutual charging between battery packs of different specifications, and the application is limited.

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