Ladder memory-less capacity expansion system for rated capacity of lithium iron phosphate battery pack

Abstract

The invention discloses a ladder memory-less capacity expansion system for the rated capacity of a lithium iron phosphate battery pack. The structure comprises a lithium battery block, a partition block, a cross relay sheet, a magnetic ladder grip holder, a battery pack frame casing, a single-chip microcomputer board and a drawer slide pad. According to the invention, the magnetic ladder grip holder matches the single-chip microcomputer board to achieve the effect of ladder capacity expansion, which guarantees the thorough consumption of the battery capacity after the single-chip microcomputer board adjusts the adaptive quota; lagging current is avoided; the voltage shear efficiency is improved; the internal battery pack is prevented from burnout caused by continuous high voltage; memory-less shear adjustment characteristics of lithium iron phosphate batteries are realized; the capacity expansion system can achieve stepwise incremental capacity expansion through mechanical adjustment;the battery maintenance progress is improved; more accurate data change allocation is provided for calling different battery capacity values; the phenomenon of unbalanced potential difference causedby integrated and customized capacity lagging consumption is avoided; and balanced potential is realized to maintain the sensitivity of battery expansion.

Description

technical field [0001] The invention relates to a rated capacity expansion system of a lithium iron phosphate battery pack without memory, belonging to the field of lithium batteries. Background technique [0002] Lithium iron phosphate battery is a chemical battery pack with strong stability and the largest capacity. Compared with liquid batteries, it has the effect of forming a solid molecular structure to stabilize and prevent broken bonds, making the battery life stability and function fluency high, and the call of the car body The distribution circuit is efficient and realizes the division operation of the rated capacity of the battery. The shortcomings of the current technology to be optimized are: [0003] The rechargeable lithium battery works under the condition that it is often fully charged, and the capacity will quickly drop below the rated capacity. This phenomenon is called the memory effect. The memory is caused by the internal residual current that causes blo...

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a rated capacity step-by-step memoryless expansion system of a lithium iron phosphate battery pack, so as to solve the problem that the rechargeable battery of the lithium battery is often working under the condition of being fully charged. The capacity will quickly be lower than the rated capacity value. This phenomenon is called the memory effect. The memory effect is caused by the blockage caused by the internal residual current, which interferes with the injection of new power. After continuous consumption, the sluggish internal voltage increases and affects The charging capacity and the built-in capacity of the battery will continue to decrease, which will affect the battery life and the efficiency of the power supply of the electric vehicle, causing the electric vehicle to run with low horsepower, shortening the consumption cycle of the lithium battery in advance, and continuously decreasing the rated value of the memory capacity, causing the battery The problem that the functional efficiency of compound work is reduced

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