Automatic battery quick replacement system and method for electric vehicles

Abstract

The invention discloses an automatic battery quick replacement system and method for electric vehicles. The system comprises a battery bin arranged at the lower part of a vehicle body, a battery box and a lifting platform. The sides of the battery bin are provided with a plurality lifting lugs; the sides of the battery box are provided with a plurality of spring bolts with pulling ropes; the lifting platform is provided with a plurality of unlocking / locking rods; and the mounting and dismounting of the battery box are realized through the mutual coordination of the lifting platform, the unlocking / locking rods, the spring bolts and the lifting lugs. When a battery is dismounted, the lifting platform supports the battery box, the unlocking / locking rods jack the pull ropes to separate the bolts from the lifting lugs, and the lifting platform descends together with the battery box so as to separate the battery box from the batter bin. When the battery is mounted, the battery box is jacked to be in place of the battery bin by the lifting platform, the unlocking / locking rods descend to loose the pull ropes, and the bolts are closed and penetrate through the lifting lugs by virtue of the tension of the spring so that the battery box is connected with the battery bin; meanwhile, a socket on the battery box is automatically in plugging connection with a plug on the battery bin. The automatic battery quick replacement system is convenient and reliable and can meet the requirement for automatic and rapid replacement of the battery box of an electric vehicle.

Description

technical field [0001] The invention relates to a battery replacement system for an electric vehicle, in particular to an automatic quick battery replacement system and an automatic quick replacement method for an electric vehicle. Background technique [0002] Electric vehicles have the advantages of economical operation, clean and environmental protection, etc., but due to the limitation of low battery capacity, the mileage is short. At the same time, due to the long charging time of batteries, high battery cost and difficult maintenance, the promotion of electric vehicles is limited. In order to prolong the mileage of electric vehicles, the method of battery replacement can be adopted. When the battery power is low, a fully charged battery box can be quickly replaced at the charging station. The battery replacement time is controlled within 3 minutes, which is similar to the refueling time of fuel vehicles. , which not only prolongs the mileage, but also saves time. By r...

AI Technical Summary

Problems solved by technology

[0006] (2) It is necessary to install four lock hooks with driving motors on all electric vehicle bodies, and the driving motors need external power supply and controller, the system is complex and increases the cost of electric vehicles;

[0007] (3) When locking, rely on the lifting ring on the lifting mounting plate to touch the root of the locking hook, so that the locking hook rotates around its fixed axis to achieve locking. This locking method is unreliable and very unsafe;

[0008] (4) The drive wire harnesses of the four driving motors need to be combined into a wire harness plug-in. When the battery pack needs to be disassembled, the plug-in is connected to the power supply. After the battery pack is installed, the plug-in is unplugged, which is difficult to realize automatic operation

[0009] In summary, the above technical solution installs four lock hooks with driving motors on the car body, and the driving harness needs to be plugged and pulled out when the driving motor is working, which makes it difficult to realize fully automatic quick installation and quick replacement of electric vehicle batteries; especially, the above technical solution It is necessary to install drive motors and lock hooks in all electric vehicles, which increases the cost of electric vehicles and leads to high costs for the entire electric vehicle battery replacement system; at the same time, electric vehicles produced by different automobile manufacturers are required to be equipped with uniform specifications of drive motors and Lock hooks are unrealistic and difficult to popularize and use, especially in public swapping stations where there are many types of electric vehicles that need to be swapped, the number is large, and the frequency of swapping is high.

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