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Charging control method and system and vehicle

A charging control method and charging control technology, applied in the field of automobiles, can solve problems such as insufficient charging, voltage precision mismatch, insufficient charging or overcharging, etc., and achieve the goal of improving charging efficiency and charging quality, improving charging quality, and improving charging efficiency Effect

Active Publication Date: 2017-12-15
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the charging process of electric vehicles, the charger and the battery management system (BMS, BATTERY MANAGEMENT SYSTEM) transmit charging parameters through information interaction means such as Controller Area Network (CAN) communication. The charging parameters mainly include the maximum charging voltage of the battery pack. And the maximum allowable charging current, the voltage detected by the BMS of the charger and the battery pack may have problems such as precision mismatch or voltage drop on the cable, which will cause the hidden danger of insufficient charging or overcharging
If the voltage detected by the charger is low, it may cause overcharging of the battery pack; if the voltage detected by the charger is high, it will cause dissatisfaction with charging and end charging early

Method used

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  • Charging control method and system and vehicle
  • Charging control method and system and vehicle
  • Charging control method and system and vehicle

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] The charging control method, system and vehicle according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0029] Wherein, the charging control method is a control method for charging the vehicle, the vehicle is an electric vehicle, and the power battery of the vehicle can be charged through a charger.

[0030] figure 2 is a flowchart of a charging control method according to an embodiment of the present invention. Such as figure 1 As shown, the charging control...

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Abstract

The present invention discloses a charging control method and system and a vehicle. The method comprises the steps that: a battery management system judges whether the detection voltage of a charger is larger than maximum allowable charging voltage or not according to the detection voltage of the charger sent by the charger and the maximum allowable charging voltage sent to the charger by the battery management system; if so, whether single battery maximum voltage of a battery pack is smaller than single battery maximum allowable voltage or not is judged further; if so, the maximum allowable charging voltage is raised such that the charger raises output voltage to charge the battery pack; and the charger enters into a constant voltage charging process until the single battery maximum voltage of the battery pack reaches the single battery maximum allowable voltage. According to the charging control method of the invention, the battery pack can be fully charged, and the charging efficiency of the battery pack is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a charging control method, system and vehicle. Background technique [0002] During the charging process of electric vehicles, the charger and the battery management system (BMS, BATTERY MANAGEMENT SYSTEM) transmit charging parameters through information interaction means such as Controller Area Network (CAN) communication. The charging parameters mainly include the maximum charging voltage of the battery pack. And the maximum allowable charging current, the voltage detected by the BMS of the charger and the battery pack may have problems such as precision mismatch or voltage drop on the cable, which will cause the hidden danger of undercharging or overcharging. If the voltage detected by the charger is low, it may cause overcharging of the battery pack. If the voltage detected by the charger is high, it will cause dissatisfaction with charging and end charging early. Conte...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/4257H01M10/441H02J7/0013H02J7/00302H02J7/007Y02E60/10
Inventor 李德伟
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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