Battery standard box power supplying device

Abstract

the invention relates to a battery standard box power supplying device which comprises a positioning device and a plurality of independently arranged power supply loops, A plurality of power supply loops are independently arranged on the positioning device, the positioning device can be detachably clamped on the battery standard case, and a plurality of power supplement loops on the positioning device are arranged one by one corresponding to each single battery in the battery standard box and independently power supplement is carried out, The power supply loop can independently supply power toeach cell, and has no influence on each other. The power supply current and the power supply loop can be adjusted according to the actual demand. The large current can be used to supply power to thecells with large voltage difference, thereby shortening the power supply time and solving the consistency problem of the battery. A low-charge monome is supplied to that balance body dure the power supplement process, so that the energy is fully utilized, and the problem that the resistance energy dissipation cause heat and affects the SOC estimation accuracy of the battery system is avoided; Theinvention solves the problem of battery consistency and prolongs the service life of the battery system.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery standard box recharging equipment. Background technique [0002] The main problem in the application of lithium batteries is the application of batteries in groups. In order to solve the "battery consistency problem", battery equalization technology is widely used in the industry. At present, the industry divides the mainstream battery balancing technology into passive balancing method (energy distribution method) and active balancing method (dynamic balancing method). [0003] The passive equalization method is to make the battery voltage in the battery pack tend to be consistent through the discharge equalization method. In the traditional energy-consuming BMS system, passive equalization is the main method, and the single battery is connected in parallel to shunt the energy-consuming resistors, and the balancing work can only be done during the charging process, and the ex...

AI Technical Summary

Problems solved by technology

However, there are two major problems: one is that the resistance can consume and discharge, waste energy and generate heat; the other is that the discharge resistance cannot be selected too small, and at the end of charging, according to the characteristics of the battery, the voltage of the small-capacity battery is often the highest. At this time, it is precisely the power of the small-capacity battery that is discharged, which increases the mutual difference between the batteries

However, there are also problems such as complex technology, high cost, difficult implementation, and large product volume, which is not conducive to the arrangement in the battery system.

[0007] With the current increase in the mileage of electric vehicles, the capacity of the battery system will gradually increase, and the consistency problem will become more obvious after long-term use. Neither active equalization nor passive equalization can solve the consistency problem well.

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