Charging mode intelligent recommendation method based on similarity

Abstract

The invention discloses a charging mode intelligent recommendation method based on similarity, and relates to the technical field of new energy automobile charging. The method comprises the followingsteps of a) acquiring the historical times of a client selecting from n charging modes in the past from a system database, and setting the historical times as a1, a2,..., an; b) obtaining the recommendation proportions of n charging modes in the system database, and setting the recommendation proportions as b1: b2:...: bn; c) generating the scoring matrixes of n charging modes according to the historical times; d) generating a standard score vector Y according to the recommendation proportion; e) calculating the Pearson coefficients of various charging modes according to a formula; and f) multiplying the Pearson coefficient of each charging mode by 100 to obtain a recommended score after the user selects each mode. According to the invention, the user experience can be obviously improved when the client selects the charging mode by using the charging application program, the client is assisted to select the correct charging mode, and the battery damage caused by the wrong selection ofthe charging modes is avoided.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle charging, in particular to a similarity-based charging mode intelligent recommendation method. Background technique [0002] The charging modes in the prior art mainly include standard charging, fast charging, balanced charging and flexible charging. Among them, the standard charging: use the AC charging pile to charge through the AC charging interface and the on-board charger, and the charging power depends on the power of the on-board charger. The rate is basically below 0.5C (C: Current, battery charge and discharge rate). [0003] Fast charging: use the DC charging pile to charge through the DC charging interface, and the charging power depends on the smaller value of the output power of the charging pile and the upper limit accepted by the battery management system. According to national standards, there are pre-charging, constant-current charging and constant-voltage charging ste...

AI Technical Summary

Problems solved by technology

However, often customers do not know when to use which mode

[0008] The results of a questionnaire survey in the charging mode selection step show that: 67.63% of the users have been exposed to charging applications, 48.55% of the users feel confused when choosing the charging application mode, 32.95% of the respondents said it does not matter, only 18.5 % of the users are clear about choosing the appropriate charging mode, and the wrong choice of charging mode is likely to cause serious damage to the battery, thereby shortening the service life of the battery

Images