Electrodynamic force vehicle power supply management system

Abstract

The invention relates to an electrodynamic force vehicle power supply management system, which is used for managing a serial battery pack to charge and discharge. The system comprises a charging control subsystem, a discharging driving subsystem and a battery balancing control subsystem, wherein the battery balancing control subsystem is used for controlling the charging and discharging processes according to the sampling of the terminal voltage of the serial battery pack and the physical quantity of each monomer battery, and a control command is provided for the charging control subsystem and the discharging driving subsystem. The charging control subsystem is used for providing a charging power supply for the serial battery pack during the charging operation, and the discharging driving subsystem is used for carrying out large-current balancing discharging on single or a plurality of monomer batteries which achieve a balancing discharging voltage value in the serial battery pack. The electrodynamic force vehicle power supply can be used for managing multiple serial lithium, plumbic acid, nickel hydride and super capacitance batteries to charge and discharge the battery in a balancing mode.

Description

technical field [0001] The invention belongs to the field of power electronics technology manufacturing, and in particular relates to an integrated power management system for electric vehicles. Background technique [0002] Lithium batteries have the advantages of no memory effect, high specific energy, high cycle times, small size, and light weight. They are the preferred battery type for applications such as electric motorcycles, light electric vehicles, and hybrid vehicles. However, due to slight differences in production processes, materials, etc., and different production batches, it is an inevitable result that the electrical properties of single batteries will vary. These differences will not only reduce the capacity of the series-connected battery pack in the application of multiple batteries in series, but may even cause serious safety hazards such as overcharging and over-discharging. When the balance is severe, it may cause hot spots inside the single battery. i...

AI Technical Summary

Problems solved by technology

In the case of asymmetric charging current and balanced discharge current, for example, in the case of high current charging and small balanced discharge current, even if the balanced discharge circuit is set, the balanced effect is only symbolic; the solution is: a .Design a large current balance discharge circuit, b. Reduce the amplitude of the charging current while the balance discharge operation occurs, so that the terminal voltage rise rate of the single battery that is subjected to the balance discharge operation is greatly reduced

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