Battery Pack Charging Detection System

Abstract

The invention provides a charging detection system for a battery pack, which includes a charging module, a common bus positive, a common bus negative, a relay, a battery pack composed of several battery modules, and a circuit detection system. The common bus is positively connected to the positive terminal of the battery pack, The negative terminal of the common bus bar is connected to the negative terminal of the battery pack; the positive side of the common bus bar has the same number as the battery modules and is connected to the positive pole of the battery module, and the negative side of the common bus bar has the same number as the battery modules and is connected to the negative pole of the battery module. Negative branch lines. After using the technical solution provided by the present invention, when using the power supplement equipment to supplement power to the battery pack, the circuit short circuit phenomenon caused by the aging of the relay can be effectively avoided; the safe switching of the battery modules in the large battery pack can be satisfied, and the connection error of the charging circuit can be prevented , avoid recoil to the battery and prevent direct short circuit, ensure the safety of the entire charging process, and protect the safety of life and property.

Description

technical field [0001] The invention relates to a charging detection system. Background technique [0002] The traditional lithium-ion battery pack is composed of several battery packs connected in series and parallel. After the battery pack is charged and discharged for a long time, the battery packs of the battery pack are likely to cause imbalance. Therefore, when the battery pack has been used for a period of time, it needs to be Balanced power replenishment for it, the usual means of power replenishment is to use a smaller current to continue charging it, and fully charge the undercharged battery, which can restore the battery pack to its original state of use, increasing application performance and service life. [0003] However, in actual operation, each battery pack corresponds to a small current supplementary device, which is impossible in terms of cost and system complexity, so there is an urgent need for a battery pack that can easily and effectively supplement en...

AI Technical Summary

Problems solved by technology

[0003] However, in actual operation, each battery pack corresponds to a small current supplementary device, which is impossible in terms of cost and system complexity, so there is an urgent need for a battery pack that can easily and effectively supplement energy. equipment; in the prior art, a current supplementary device is used to charge the entire battery pack, and the current supplementary device can evenly charge multiple strings of batteries by switching, that is, in the form of a relay array, as long as it is through the relay array Regardless of the array mode, there is a process of switching from one string of batteries in the battery pack to another through relays, so the following situations may occur in this process: the control signal achieves successful switching, but due to Long-term and high-frequency switching of the relay leads to failure and sticking together, which may cause two strings of batteries to short-circuit through the relay, resulting in accidents; on the other hand, due to the battery power distribution, it is necessary to lead the wiring harness from each battery unit in the battery pack Connect the charging equipment separately, the complexity of the wiring harness can be imagined, the possibility of connection error is very high, if there is a wrong connection, it may cause recoil to the battery or a direct short circuit phenomenon, which may easily cause safety accidents and endanger life property safety

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