Augmented-program battery system

Abstract

An augmented battery system for an electric vehicle is provided. The augmented battery system includes a main battery mounted on the electric vehicle for supplying energy to the electric vehicle. An extended range battery module is replaceably mounted on an electric vehicle. The DC boost module is connected with the main battery, and the range-increasing battery module installed on the electric vehicle is charged with the main battery through the DC boost module. Wherein each of the extended-range battery modules is provided with a BMS module, and at least one of the extended-range battery modules mounted on the electric vehicle is responsive to a charging signal output from the corresponding BMS module to charge the main battery. By the increased program battery system provided by the invention, the battery capacity of the main battery fixedly mounted on the vehicle can be reduced to reduce the load of the vehicle, but the battery capacity can flexibly meet the requirements of different mileage.

Description

technical field [0001] The invention relates to the field of batteries, in particular to the field of batteries for automobiles. Background technique [0002] With the increasing shortage of fossil fuels, the development of new energy vehicles has attracted worldwide attention. However, at this stage, there are many problems in new energy pure electric vehicles that restrict the rapid expansion of the pure electric vehicle market. The main constraints are: 1. Difficulty charging; 2. Short battery life; 3. Short battery life; 4. Battery safety; 5. Battery economy. [0003] Most of the new energy pure electric vehicles at this stage adopt integrated battery design, that is, the whole battery is designed on the vehicle to form a unified whole with the vehicle. This type of battery has the following characteristics: the overall battery is large in size, heavy in weight, and high in cost. It is not easy to replace the battery, because the extreme use environment leads to a low ...

AI Technical Summary

Problems solved by technology

However, a model equipped with a higher-capacity battery will inevitably increase the total weight of the vehicle, which will inevitably lead to higher energy consumption due to the increased battery weight. Therefore, blindly increasing the battery capacity is not economical, and the increased battery capacity consumes more to the weight gain of the vehicle

[0006] 3. The blind pursuit of high capacity by various vehicle manufacturers is bound to maximize the utilization of battery capacity, and the utilization of nearly 100% DOD cycle capacity leads to the use of batteries in extreme environments, which not only leads to a greatly reduced cycle life of the battery, but also affects the battery life. The safety of the battery brings great hidden dangers

[0007] 4. Battery safety is a comprehensive issue, mostly caused by extreme usage environments, which unrestrainedly squeeze the potential of the battery, and getting to the bottom of it is a comprehensive manifestation of the above problems

[0008] 5. The capacity of the vehicle battery is too large, which will inevitably increase the cost of the vehicle. The battery accounts for nearly half of the cost of the vehicle. However, most end-users only use 20% of the battery life of the vehicle for 80% of the time. , resulting in a huge waste of

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