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A method and device for real-time monitoring of a power battery pack

A power battery pack and real-time monitoring technology, which is applied in the direction of battery/fuel cell control devices, electrical devices, electric vehicles, etc., can solve the problems of one-sided detection results, a large amount of manpower and material resources, and inaccuracy, so as to save manpower and material resources , easy application, wide coverage effect

Active Publication Date: 2020-11-06
优必爱信息技术(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery pack failure alarm in electric vehicles is mainly based on the real-time detection of battery temperature, and the battery is only detected by temperature, making the detection results very one-sided and inaccurate
However, through offline battery testing, the battery maintenance department is rarely able to contact a large number of private car owners of electric vehicles. Even in the necessary maintenance links, offline battery testing requires a lot of manpower and material resources, and cannot cover them. All owners

Method used

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  • A method and device for real-time monitoring of a power battery pack
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  • A method and device for real-time monitoring of a power battery pack

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Embodiment

[0055] figure 1 It is a real-time monitoring method for a power battery pack provided by an embodiment of the present invention. Such as figure 1As shown, this embodiment provides a real-time monitoring method for a power battery pack, including:

[0056] Step 101, obtaining the online data of the battery pack and each single battery in the battery pack;

[0057] In some embodiments, the online data can be obtained through a battery management system (BATTERYMANAGEMENT SYSTEM, BMS) in the electric vehicle. The online data can be, but not limited to, the voltage and current of the battery pack and the voltage and current of the single cells in the battery pack.

[0058] The battery management system (BMS) is the link between the battery and the user. The main object is the secondary battery (rechargeable battery). The main purpose is to improve the utilization rate of the battery and prevent the battery from being overcharged and overdischarged. It can be used in electric ve...

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Abstract

The invention relates to a real-time monitoring method and device for power battery packs. The real-time monitoring method and device are applied in the technical field of batteries, and solve the problem that in the related technology, detection on a battery pack is relatively one-sided, and cannot cover all car owners. The real-time monitoring method for the power battery packs comprises the following steps of acquiring the power battery packs and on-line data of single batteries in the battery packs; calculating the total correlation coefficients of the single batteries according to on-linedata, wherein the total correlation coefficients correspondingly represents the harmony of the single batteries relative to the other single batteries in the battery packs; and judging whether the total correlation coefficients are within the preset total correlation coefficient range, and if no, determining the single batteries corresponding to the total correlation coefficient, which are not within the preset total correlation coefficient range, as harmony anomaly single batteries.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method and equipment for real-time monitoring of a power battery pack. Background technique [0002] In recent years, due to the continuous emergence of energy crisis and environmental deterioration, electric vehicles that use on-board battery systems as power sources and use motors to drive vehicles are more environmentally friendly than traditional fuel vehicles. Therefore, electric vehicles have broad development prospects and have gradually become A means of transportation for people's daily travel. [0003] The power performance and cruising range of electric vehicles are mainly determined by the performance of the battery system. The electric vehicle power battery pack is composed of a large number of single batteries in parallel to form the power base. Due to the theoretical upper limit of battery life and the inherent failure rate in production, coupled with the comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00B60L3/12B60L58/18
CPCB60L3/0046B60L3/12B60L58/18Y02T10/70
Inventor 王志刚朱瑞
Owner 优必爱信息技术(北京)有限公司