Method and device for calibrating battery power

A technology of battery power and calibration method, applied in the direction of testing and transportation of electrical devices, measuring devices, measuring electricity, etc., can solve the problem of difficult to take into account battery power performance and battery life, avoid excessive power output, and enhance power performance. , the effect of life reduction

Active Publication Date: 2021-11-16
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method and device for calibrating battery power
  • Method and device for calibrating battery power
  • Method and device for calibrating battery power

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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 present invention provides a battery power calibration method and device, the method includes: obtaining the discharge power corresponding to the target battery of the target vehicle under different parameter working conditions; The maximum motor power corresponding to the motor of the target vehicle under the parameter working condition; obtain the current maximum motor power corresponding to the motor of the target vehicle under the current state of charge under the current ambient temperature; based on the current ambient temperature, current state of charge and preset temperature standards The relationship between the parameters and the preset standard parameters of the state of charge is determined to determine the target temperature and the target state of charge; based on the current maximum motor power, the power of the target battery at the target temperature and the target state of charge is calibrated. In this way, it can ensure that the vehicle releases the power to the greatest extent under any circumstances in real time, enhances the power performance, and at the same time avoids the phenomenon of excessive power output due to the accuracy error of the state of charge, and ensures that the battery life will not be reduced 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 Patents(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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