A battery pack management system for electric vehicles

Abstract

The invention discloses a battery pack management system of an electric car. The battery pack management system of the electric car is characterized in that the management system is a battery pack formed by connecting a battery set A and a battery set B in series, and heating films A and heating films B are arranged on the battery pack; batteries of the battery set A are vertically arranged, the heating films A are arranged on the side faces of all the batteries of the battery set A, batteries of the battery set B are arranged in a topping mode, and the heating films B are arranged on the bottom faces of all the batteries of the battery set B. The battery pack management system of the electric car adopts high-voltage PTC materials and has the over-temperature protection function; the heating films heat the battery pack in a centralized mode, multiple control wire harnesses are omitted compared with decentralized heating, controlling is easy and reliable, and the cost is saved; the high-voltage heating films are high in heating efficiency, good in heating effect and short in heating time, and capable of shortening the charging time and meeting the requirement that the charging time of the electric car is short; a heating system belongs to a high-voltage system, a loop is arranged for interlocking, and safety and reliability are guaranteed in using and maintaining.

Description

technical field [0001] The invention relates to the technical improvement of battery packs of electric vehicles, in particular to a battery pack management system of electric vehicles. Background technique [0002] With the continuous shortage of petroleum energy and the increasingly serious environmental pollution, new energy vehicles have been well developed. At present, new energy vehicles include hybrid, pure electric, and fuel cell vehicles, the most representative of which is the Toyota Prius Hybrid And the Nissan Leaf pure electric sedan. As a zero-emission and zero-pollution pure electric vehicle, it will be favored by OEMs and consumers in the future, but the most fatal problems of pure electric vehicles at this stage are high price, short cruising range, and short battery life, which lead to the decline of these factors. The final reason is that the battery is expensive, has low energy density, and has fewer cycles, and when the batteries are combined into a batte...

AI Technical Summary

Problems solved by technology

In the prior art, CN 102496751A provides a battery pack with heat management function and its control system and control method. However, this method provides a method of using the heat management system to heat the battery pack. This method is safe and reliable , but using decentralized heating, complex structure, expensive, poor battery heating effect can not meet the needs of centralized management of modern electric vehicle battery packs

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