Off-grid solar lithium battery activation method, activation circuit, solar controller

Abstract

The invention provides an off-grid solar lithium battery activation method. The method comprises the steps that state sampling is carried out; whether the state is an over-discharged protection state is judged; the state of a lithium battery is monitored in real time through a main control chip and a lithium battery sampling circuit; an activation circuit is controlled to customize suitable activation pulse according to monitored data to ensure that a controller is safely and reliably activated. The invention further relates to an off-grid solar lithium battery activation circuit and an off-grid solar controller. According to the invention, a lithium battery state sampling method which is different from a controller on the market at present is used to easily and efficiently identify various states of the lithium battery; even in the case of accessing to solar input, battery transposition is detected, and reaction is quickly carried out to cut off a charging circuit, which is safe and reliable; the design is reasonable and ingenious; the problem of lithium battery activation is solved; the service life of the lithium battery of an off-grid solar system is effectively increased; and unnecessary resource waste is avoided.

Description

Technical field [0001] The invention relates to an off-grid solar controller, in particular to an off-grid solar lithium battery activation method, an activation circuit and a solar controller. Background technique [0002] At present, most off-grid solar controllers on the market do not have the lithium battery charging function, and a small number of separate grids with lithium battery charging function cannot activate the lithium battery after over-discharge protection. Currently, the solar controllers on the market mainly charge lead-acid batteries. Even if the lithium battery is charged, it is assumed that the lithium battery triggers the over-discharge protection mechanism to work. The disadvantage of this is that the user does not charge for a long time, and the lithium battery is consumed to over-discharge protection. At this time, the lithium battery locks itself and the outside world cannot charge and discharge it. Therefore, for the user, there is no The activation fu...

AI Technical Summary

Problems solved by technology

The disadvantage of this is that if the user does not charge for a long time, the power of the lithium battery will be consumed to the over-discharge protection. At this time, the lithium battery will lock itself, and the outside world cannot charge and discharge it. The activation function of lithium batteries is very inconvenient and may cause waste. Without the activation function, the charging and discharging of lithium batteries cannot be restored. These batteries may be considered invalid and discarded

[0003] In addition, the solar controllers currently on the market that can charge lithium batteries all have the function of anti-reverse connection of the battery, but the premise is that the solar input cannot be connected first. When the solar input is connected to the solar controller, then the reverse connection The lithium battery will cause damage to the controller, so when most controllers are installed, the wiring sequence will be stipulated in the manual, first connect the battery, then connect the load terminal, and then connect the solar input, so it is troublesome for inexperienced wiring , prone to errors and insufficient protection

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