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Power battery health state evaluation method, device and system and battery swapping station

A power battery, state of health technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc.

Active Publication Date: 2019-06-07
NIO ANHUI HLDG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems in the prior art, that is, to solve the technical problem of how to timely and accurately evaluate the state of health of the power battery

Method used

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  • Power battery health state evaluation method, device and system and battery swapping station
  • Power battery health state evaluation method, device and system and battery swapping station
  • Power battery health state evaluation method, device and system and battery swapping station

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Embodiment Construction

[0183] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0184] A method for evaluating the state of health of a power battery provided by the present invention will be described below with reference to the accompanying drawings.

[0185] See attached figure 1 , figure 1 The main steps of the method for evaluating the state of health of the power battery in this embodiment are exemplarily shown. Such as figure 1 As shown, in this embodiment, the health status of the power battery can be evaluated according to the following steps:

[0186] Step S101: Obtain the battery voltage corresponding to the charging state of multiple preset power batteries during the current charging and the previous charg...

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Abstract

The invention relates to the technical field of battery evaluation, in particular to a power battery health state evaluation method, device and system and a battery swapping station. The invention aims at solving the technical problem of how to evaluate the health state of a power battery in time and accurately. In order to achieve the purpose, the power battery health state evaluation method provided by the invention mainly includes the following steps: obtaining battery voltages corresponding to multiple preset states of charge of a power battery during the current charging and the previouscharging; and evaluating the current health state of the power battery according to the voltage variation of the battery voltage corresponding to each state of charge. Based on the steps, a first health factor of the power battery can be calculated in real time according to the variation of battery voltage during each charging process, and the health state of the power battery can be evaluated according to the first health factor, that is, online evaluation of the health state of the power battery is realized. Meanwhile, the first health factor can be corrected by a correction coefficient calculated by using a calibrated health factor.

Description

technical field [0001] The invention relates to the technical field of battery evaluation, in particular to a power battery health state evaluation method, device, system and switching station. Background technique [0002] The power battery is the power source of the vehicle, and its health status will directly affect the cruising range and power performance of the vehicle. After long-term use and / or repeated charging, the performance of the power battery will decrease significantly, which will not only affect the user's driving experience, but may also cause certain driving risks. Therefore, the health status of the power battery must be obtained in time. However, the current health status evaluation method for power batteries is mainly to perform calibration experiments on the power battery during maintenance and evaluate the health status based on the calibration results. However, the maintenance interval of power batteries is often relatively long, and it is impossible...

Claims

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Application Information

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IPC IPC(8): G01R31/392
Inventor 田维超
Owner NIO ANHUI HLDG CO LTD
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