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Power battery early warning method and device

A power battery and battery technology, applied in secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve the problems of power battery parameter difference analysis and low early warning accuracy, and achieve the effect of improving early warning accuracy

Pending Publication Date: 2022-05-10
CHONGQING JINKANG POWER NEW ENERGY CO LTD
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Problems solved by technology

The current power battery early warning method fails to analyze the difference of power battery parameters under different working conditions, and there is a problem of low early warning accuracy

Method used

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  • Power battery early warning method and device
  • Power battery early warning method and device

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Embodiment Construction

[0052] In order to better understand the technical solutions of the present invention, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0053] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0054]Terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a", "said" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0055] In the related technology, the difference ...

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Abstract

The invention relates to the field of batteries, in particular to a power battery early warning method and device. The method comprises the following steps: acquiring battery parameters and vehicle state data reported by a vehicle-mounted terminal from a cloud server; according to the battery parameters and / or the vehicle state data, the current battery working condition and a first early warning threshold value associated with the current battery working condition are determined, different battery working conditions are configured with different early warning threshold values, and all the early warning threshold values are determined according to historical battery parameters under the corresponding battery working conditions; voltage data, temperature data, insulation resistance values and internal resistance values in the battery parameters are compared with corresponding threshold values in the first early warning threshold values, and whether battery early warning information is sent out or not is determined according to comparison results. According to the power battery early warning method provided by the embodiment of the invention, the working condition of the battery can be identified, and different early warning thresholds are set for different working conditions of the battery, so that the early warning accuracy is improved.

Description

【Technical field】 [0001] The invention relates to the battery field, in particular to a power battery early warning method and device. 【Background technique】 [0002] The power battery is an important component of new energy vehicles. If the new energy vehicle continues to run when the power battery is abnormal, it will endanger driving safety. Among them, the operating state of the power battery can be divided into various working conditions, and the parameters of the power battery under different working conditions are different. The current power battery early warning method fails to analyze the difference of power battery parameters under different working conditions, and there is a problem of low early warning accuracy. 【Content of invention】 [0003] In view of this, an embodiment of the present invention provides a power battery early warning method and device, which can identify battery operating conditions and set different early warning thresholds for different ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48
CPCH01M10/42H01M10/48H01M10/486
Inventor 李琛
Owner CHONGQING JINKANG POWER NEW ENERGY CO LTD
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