A pre-charging control method and device

A control method and pre-charging technology, applied in control devices, battery/fuel cell control devices, electrical devices, etc., to achieve the effects of ensuring safe start, eliminating high-voltage hidden dangers, and ensuring pre-charging time

Active Publication Date: 2021-11-23
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to meet the power and energy requirements of electric vehicles, the voltage platform of the whole vehicle is as high as hundreds of volts or even thousands of volts, and the issue of high voltage safety should be paid enough attention to by designers and users

Method used

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  • A pre-charging control method and device
  • A pre-charging control method and device
  • A pre-charging control method and device

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Embodiment Construction

[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0054] An embodiment of the present invention provides a pre-charging control method, which is applied to a battery management system, and the flow chart of the method is as follows figure 1 shown, including the following steps:

[0055] S10, acquiring operation information of the battery management system and the battery system.

[0056]In this embodiment, the operation information of the battery management system is used to characterize the operation status...

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Abstract

The present invention provides a pre-charging control method and device. The method is applied to a battery management system, including: obtaining the operating information of the battery management system and the battery system; judging whether the operating information meets the preset pre-charging permission conditions; The system issues a notice to indicate the permission of pre-charging, and obtains the pre-charging current and load voltage of the battery system during the pre-charging process of the battery system based on the notice; judges whether the pre-charging current is equal to the preset pre-charging current threshold, load Whether the voltage is equal to the preset load voltage threshold; if the pre-charging current is equal to the preset pre-charging current threshold and the load voltage is equal to the preset load voltage threshold, then control the pre-charging progress of the battery system according to the preset pre-charging duration. Based on the invention, the hidden danger of high voltage can be eliminated under the premise of ensuring the pre-charging time, and the safe start of the electric vehicle can be guaranteed.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, and more specifically, to a pre-charging control method and device. Background technique [0002] With the popularization of electric vehicles, the effectiveness and safety of the pre-charge control of the battery system in electric vehicles has been paid more and more attention. [0003] At this stage, the pre-charging control strategy mainly focuses on the rationality of the pre-charging time, in order to complete the high-voltage power-on process of the whole vehicle within a predetermined time. However, in order to meet the power and energy requirements of electric vehicles, the voltage platform of the whole vehicle is as high as hundreds of volts or even thousands of volts. The issue of high voltage safety should be given enough attention by designers and users. [0004] Therefore, how to eliminate the hidden danger of high voltage under the premise of ensuring the pre-cha...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): B60L58/10B60L3/00
CPCB60L3/0046B60L2240/545B60L2240/547B60L2240/549Y02T10/70
Inventor陆珂伟王林张树梅
OwnerSAIC MOTOR