A method for judging whether the charging cable is successfully connected when changing batteries

Abstract

The invention provides a method for judging whether the charging line is successfully connected during battery replacement, including: the user inserts the charging connector of the battery replacement cabinet into the charging interface of the battery; the control system of the power replacement cabinet judges whether the battery has qualified identity information; The cabinet control system obtains the voltage of the battery; the power exchange cabinet control system sets the charging voltage and charging current; the power exchange cabinet control system obtains the charging voltage of the charging module; the power exchange cabinet control system judges whether the difference between the charging voltage and the battery voltage is less than the preset The threshold value; when the voltage difference between the charging voltage and the battery is less than the preset threshold value, the control system of the power exchange cabinet determines that the charging cable connected to the charging module and the battery is successfully connected. The present invention judges whether the charging line is successfully connected by detecting whether the difference between the charging voltage of the charging module and the voltage of the battery is less than the preset threshold in the control system of the power exchange cabinet. Since the voltage rises instantaneously, the detection process time is greatly shortened , which improves the user's battery swapping experience.

Description

technical field [0001] The invention relates to the technical field of battery swapping, in particular to a method and system for judging whether a charging cable is successfully connected during battery swapping. Background technique [0002] The power exchange cabinet is generally used to replace the battery of the electric bicycle. During the power exchange process, the user needs to plug in the charging cable to ensure that the charging and communication are normal, otherwise it cannot be guaranteed that the charging and communication cannot be completed normally. In the original power exchange process, if the communication line cannot be successfully connected, at this time, due to the failure of successful communication, the verification of the identity information of the battery will fail, resulting in the failure of the power exchange. This is normal. However, in practice, the communication line is successfully connected, but the charging line is not successfully con...

AI Technical Summary

Problems solved by technology

[0002] The battery exchange cabinet is generally used for battery exchange of electric bicycles. During the battery exchange process, the user needs to plug in the charging cable to ensure that the charging and communication are normal, otherwise it cannot be guaranteed that the charging and communication cannot be completed normally.

In the original battery replacement process, if the communication line cannot be successfully connected, it will fail to verify the identity information of the battery due to the failure of communication at this time, resulting in the failure of the battery replacement. This is normal.

However, in practice, the communication line will be successfully connected, but the charging line will not be successfully connected, which leads to the situation that it is normal to verify the battery identity information during battery replacement, but the battery cannot be charged normally.

[0003] Generally, judging whether the charging line is successfully connected is judged according to the current, but it takes a long time to judge according to the magnitude of the current, because the charging process originally starts from the current 0, and it is a relatively slow rising process. At the beginning, if the current is 0 to judge whether the charging line is connected successfully, it is wrong. It needs to wait for a period of time to check whether the current is still lower than a small value before judging whether the charging line is connected successfully. This process It takes about 10s, which is a relatively poor experience for battery swapping users.

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