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Power battery performance active management method and system

A power battery and active management technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve problems such as prone to lithium precipitation, potential safety hazards, and limited battery performance

Active Publication Date: 2021-04-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, electric vehicles have a long operating life and complex operating conditions. Vehicle power batteries need to cope with a wide range of ambient temperature and frequent dynamic power changes.
However, in the alpine environment, the capacity of the power battery is significantly reduced, the accuracy of power estimation is poor, the charging and discharging capabilities are limited, and lithium precipitation is prone to occur, which leads to accelerated aging of the battery and even brings safety hazards; in high temperature environments, the battery is prone to Aging with risk of thermal runaway
[0003] The measurement and calculation methods commonly used in the current power battery management system are all passive management ideas, which limit the charging and discharging power of the battery to a lower range in a low temperature environment, which limits the performance of the battery

Method used

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  • Power battery performance active management method and system
  • Power battery performance active management method and system

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Embodiment Construction

[0029]The technical solutions of the present invention will be described below in conjunction with the drawings, as will be described, as described herein is an embodiment of the invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0030]A power battery performance active management method provided by the present invention, such asfigure 1 As shown, specifically includes the following steps:

[0031]Step S1, based on the peak power, life, consistency factor of the power battery at different temperatures, and synthesize the optimum operating temperature range upper limit and lower limit of the power battery;

[0032]Step S2, collect the battery temperature in real time, and determine if the current temperature is lower than the lower limit of the optimal operating temperature range, if so, the battery is actively heated until the temperature is ...

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Abstract

The present invention provides a power battery active management method and system. Through the active battery performance management and control mode, it gets rid of the limitations on battery charging and discharging power in the prior art, fully exerts the performance potential of the battery, and comprehensively considers Considering many factors such as battery life and consistency, it has many beneficial effects that the prior art does not have.

Description

Technical field[0001]The present invention relates to the field of power battery management, and more particularly to techniques for managing power battery performance in a proactive manner.Background technique[0002]The power battery acts as the core power source of electric vehicles, and the power, renewal mileage, safety, etc. of electric vehicles, and the like. The electric vehicle has a long period of operation, complex operating conditions, and vehicle power batteries require both a wide ambient temperature range and requires frequent dynamic power changes. However, in a high-precipitation environment, the power battery capacity is significantly reduced, and the energy estimation accuracy is poor, the charge, discharge ability is limited, and the lithium is easily analyzed, causing the battery to accelerate aging, and even brings a safety hazard; Aging, and there is a risk of thermal out-of control.[0003]The current power battery management system is usually used to belong to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/613H01M10/615H01M10/625H01M10/633
CPCH01M10/4207H01M10/613H01M10/615H01M10/625H01M10/633Y02E60/10
Inventor 熊瑞雷浩王榘
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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