Battery engine

Abstract

The invention relates to a battery engine, comprising a battery box in which (N+1) serially connected batteries are installed, wherein the amount of working batteries is N, the (N+1) battery is a standby battery, the battery engine further comprises a data acquisition module and an intelligent control chip, the data acquisition module comprises (N+1) acquisition ICs having the same structure and function, each acquisition IC is respectively connected with an anode signal and a cathode signal of the (N+1) batteries in the battery box, and each acquisition IC is connected to the intelligent control chip in parallel. The battery engine can detect voltage, current and temperature of each battery in real time, so as to implement balanced discharge of each single battery, and avoid shortening the service life of the whole battery pack for the reason that the failure of the whole battery pack is caused by premature failure of some single battery; and each battery pack is provided with a (N+1) single battery as a standby battery, so that trouble in changing batteries is avoided, and uninterrupted operation of electrical vehicles is ensured.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a battery engine for realizing the non-consumption balanced management of each single battery in the battery pack of the electric vehicle. Background technique [0002] At present, due to environmental pollution and shortage of oil resources, electric vehicles have become the development direction to replace traditional vehicles. In the process of research and development and industrialization of electric battery vehicles, the problem of battery technology has become the most important restrictive factor. These problems mainly manifest In the following aspects: [0003] (1) During the manufacturing process of the power battery, due to the difference in the manufacturing process, even the same batch of batteries will inevitably have differences, that is, the difference in capacity is directly reflected in the terminal voltage of the battery. During the charging process, ...

AI Technical Summary

Problems solved by technology

[0003] (1) During the manufacturing process of the power battery, due to the difference in the manufacturing process, even the same batch of batteries will inevitably have differences, that is, the difference in capacity is directly reflected in the terminal voltage of the battery. During the charging process, The voltage of a battery with a small capacity rises faster, that is, when the other batteries are not yet fully charged, the battery with a small capacity is already fully charged, and continuing to charge will cause the battery with a small capacity to be in an overcharged state

The direct consequence of this difference is that a battery with a small capacity is often in an overcharged state during charging, and is in an overdischarged state during discharging. According to the principle of wooden barrels, its cycle life is significantly shortened, and the life of the entire battery pack is reduced.

[0004] (2) During the use of the battery pack, single cells are often damaged. If this situation is not discovered in time, the performance of other batteries will be seriously affected, and the entire battery pack will be damaged.

[0005] (3) The battery is not only affected by the external temperature. During the packaging process of the battery pack, the battery is divided into inside and outside. Slightly lower, resulting in inconsistencies in charge and discharge, serious overcharge and overdischarge of a single battery, which affects the performance of the entire battery pack

[0006] In addition to the above analysis, in the actual use of electric vehicles, it is also found that the life of a single battery is much longer than that of batteries in electric vehicles. Research shows that this is because the battery is in an unbalanced state, and the charging and discharging process is not balanced. , and the repeated charging and discharging process exacerbates the unbalanced phenomenon, and the life of the incompletely charged battery is also shortened, causing the life of the battery pack to be shortened, thereby shortening the life of the entire battery system, making electric vehicles or electric bicycles The use cost increases, also causes the waste of energy

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