Light-weight electric vehicle battery simulation device for off-board charger field detection

Abstract

The invention provides a light-weight electric vehicle battery simulation device for off-board charger field detection, which aims to solve the problem that a charging load for off-board charger fielddetection is large in size and heavy in weight and is limited by external factors such as vehicle loading space, load and underground garage height. The device comprises a processor, a CAN communication module, a power supply module, a man-machine interaction module and a light-weight charging load module. Parameters such as types, specifications, temperature and voltage of batteries can be set online according to detection requirements for simulating power battery packs with different types, specifications and parameters. A light-weight charging load is formed by cascading a vehicle-mountedpower battery pack with a direct-current converter, has constant-voltage, constant-current, constant-power and constant-resistance modes and has the capacity of continuous adjustment within a rated range, and autonomous test of an off-board charger is achieved while the requirement for light weight of the charging load is met.

Description

technical field [0001] The invention belongs to the field of on-site detection of electric vehicle charging equipment, and in particular relates to a lightweight electric vehicle battery simulation device used for on-site detection of off-vehicle chargers. Background technique [0002] With the intensification of the global energy crisis and the increasingly prominent environmental problems, compared with traditional vehicles, the huge advantages of electric vehicles in terms of energy saving and emission reduction have attracted the attention of governments and automobile companies in various countries, and the construction of charging infrastructure for electric vehicles has come into being. pregnancy. The operating status of electric vehicle charging infrastructure will not only affect its own reliability, but also affect the service life of power batteries. Therefore, it is very important to test the performance of electric vehicle charging equipment. At present, the lo...

AI Technical Summary

Problems solved by technology

In this way, a power battery pack with a single specification parameter has poor adaptability when used as a charging load for on-site testing, and it is difficult to meet the needs of on-site testing of off-board chargers of different specifications and models. In the normal charging process, the extreme parameters of the power battery pack, For example: the temperature of the single cell is too high, the voltage of the single cell is too high, generally it will not appear, it is difficult to test the emergency response and protection capabilities of off-board chargers

In addition, the state of charge and voltage of the power battery pack are determined by the actual energy storage of the battery, and the state of charge and voltage cannot be adjusted independently during the test. Therefore, the entire test process is passive, which takes a long time and has low efficiency. and test items are limited, and it is impossible to realize independent testing of non-vehicle chargers

Images