Battery power calibration method and device

A battery power and calibration method technology, which is applied in the direction of testing and transportation of electrical devices, measuring devices, measuring electricity, etc., can solve the problem that it is difficult to balance the power performance and battery life of the battery, so as to avoid excessive power output, life reduction, The effect of enhancing power

Active Publication Date: 2021-09-28
SVOLT ENERGY TECHNOLOGY CO LTD
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AI Technical Summary

Problems solved by technology

[0005] In view of this, the embodiment of the present invention provides a battery power calibration method and device to overcome the problem in the prior art that the battery power calibration method in a low temperature environment is difficult to balance battery power performance and battery life

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  • Battery power calibration method and device
  • Battery power calibration method and device

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0050] The technical features involved in different embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0051] At present, electric vehicles are becoming more and more popular and gradually replacing fuel vehicles. Batteries are the power source of electric vehic...

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Abstract

The embodiment of the invention provides a battery power calibration method and device. The method comprises the steps of obtaining corresponding discharge power of a target battery of a target vehicle under different parameter working conditions; carrying out a dynamic driving test on the target vehicle, and determining the maximum motor power corresponding to the motor of the target vehicle under different parameter working conditions; acquiring the corresponding current maximum motor power of the motor of the target vehicle under the current state of charge at the current environment temperature; determining a target temperature and a target state of charge based on a relationship between the current environment temperature and the current state of charge and a preset temperature standard parameter and a preset state of charge standard parameter; and calibrating the power of the target battery at the target temperature and the target charge state based on the current maximum motor power. Therefore, it can be guaranteed that the vehicle releases power to the maximum degree under any condition in real time, the dynamic property is enhanced, meanwhile, the phenomenon that power output is too large due to the precision error of the state of charge can be avoided, and it is guaranteed that the service life of a battery cell is not shortened due to excessive discharge.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a battery power calibration method and device. Background technique [0002] At present, electric vehicles are becoming more and more popular and gradually replacing fuel vehicles. Batteries are the power source of electric vehicles. During the production process of electric vehicles, the discharge power of batteries needs to be calibrated. The calibrated discharge power refers to the discharge power that can work safely and reliably when the battery has a certain remaining power at a certain temperature. [0003] Due to the limited performance of the ternary lithium battery at low temperature, it cannot maximize the discharge capacity as at normal temperature, resulting in the simultaneous attenuation of the power of the vehicle. If the power is unrestricted, it is easy to cause undervoltage failure of the battery cell, which will affect the life of the battery cell. The cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/385G01R31/00
CPCG01R31/385G01R31/006G01R31/003
Inventor 李昊翔
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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