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An adaptive adjustment method for fast charging pile charging request current

A self-adaptive adjustment and charging request technology, applied in charging stations, electric vehicle charging technology, electric vehicles, etc., can solve problems such as long charging time and poor charging experience for users

Active Publication Date: 2022-07-12
SAIC-GM-WULING AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This charging strategy of fast charging piles sometimes leads to the phenomenon that the actual charging current is much lower than the charging request current, resulting in long charging time and poor charging experience for users.

Method used

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  • An adaptive adjustment method for fast charging pile charging request current

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Embodiment Construction

[0015] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0016] An embodiment of the present invention is an adaptive adjustment method for a charging request current of a fast charging pile. The flowchart is as follows figure 1 As shown, the method includes the following steps:

[0017] S101, obtain the actual charging current i in real time;

[0018] S102, if the formula (1) is established, go to S101; otherwise, go to the next step; the formula (1) is:

[0019] I 0 -a≤i≤I 0 +b (1)

[0020] In the formula, I 0 is the charging request current when charging starts, a and b are current constants set according to industry experience, a>0, b>0, I 0 The units of , a and b are Ann;

[0021] S103. If i0 -a, increase the charging request current I, send a charging request signal to the fast charging pile, go to S101, until equation (1) is established 1;

[0022] S104. If i>I 0 +b, reduce the charging request curr...

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Abstract

The invention discloses an adaptive adjustment method for a charging request current of a fast charging pile. The method includes: acquiring the actual charging current in real time; judging whether the charging request current needs to be adjusted according to the relative size of the acquired actual charging current and the charging request current; when the actual charging current is less than the charging request current, increasing the charging request current; When the charging current is greater than the charging request current, reduce the charging request current so that the actual charging current is always close to the charging request current. The present invention solves the problems in the prior art that the actual charging current may be too small and the charging time is too long by adaptively adjusting the charging request current according to the relative magnitude of the actual charging current and the charging request current.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging, and in particular relates to an adaptive adjustment method for a charging request current of a fast charging pile. Background technique [0002] Electric vehicles are charged using fast charging piles. Generally, the fast charging gun needs to be inserted into the fast charging port first. After the fast charging gun is inserted into the fast charging port, the electric vehicle and the fast charging pile realize a handshake connection, and the power battery management system sends a request signal including the charging request current to the fast charging pile. According to the voltage, temperature and other values ​​of the power battery collected in real time, the charging capacity of the current power battery is evaluated, and the appropriate charging request current value is determined). After the fast charging pile receives the request signal, it outputs the actual chargin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L53/62
CPCB60L53/62Y02T90/14
Inventor 何璐李彬韦映竹卢晨葛俊良
Owner SAIC-GM-WULING AUTOMOBILE CO LTD