A method and device for calculating the remaining charging time of a power battery, a vehicle, and a storage medium
A technology for charging remaining time and power battery, which is applied to measuring devices, measuring electricity, measuring electrical variables, etc. It can solve the problems of inaccuracy and large fluctuations in the calculated value of charging time, and achieve the effect of improving accuracy.
Active Publication Date: 2022-05-13
GUANGZHOU XIAOPENG MOTORS TECH CO LTD
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However, at the current stage, most electric vehicles use the actual charging current to directly calculate the charging time, and the actual charging current is affected by factors such as ambient temperature, grid fluctuations, charging methods, thermal management, etc., resulting in large fluctuations and inaccurate charging time calculation values.
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, 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 making creative efforts belong to the protection scope of the present invention.
[0025] It should be noted that the terms "first", "second", "third" and "fourth" in the specification and claims of the present invention are used to distinguish different objects, rather than to describe specific order. The terms "comprising" and "having" and any variations thereof in the embodiments of the present invention are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a se...
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The embodiments of the present invention relate to a method and device for calculating the remaining charging time of a power battery, a vehicle, and a storage medium. The method includes: obtaining the current charging power; calculating the battery charging time according to the current charging power and the energy value to be charged; if the current When the battery temperature is in the temperature range to be compensated, the temperature difference compensation time is calculated according to the current charging power and the energy value to be compensated; if the current ambient temperature is in a non-charging suitable temperature range, the hysteresis compensation time is calculated according to the current charging power; Add the battery charging time, temperature difference compensation time, and hysteresis compensation time to obtain the remaining power battery charging time. Through the method provided by the embodiment of the present invention, the remaining charging time of the power battery is divided into three parts: battery charging time, temperature difference compensation time, and hysteresis compensation time, which are calculated separately, and the temperature difference compensation time for heating or cooling the power battery to a suitable temperature range for charging And fully considering the hysteresis compensation time of the battery temperature hysteresis due to the ambient temperature will greatly improve the accuracy of the remaining time of power battery charging.
Description
technical field [0001] The invention relates to the technical field of power batteries, in particular to a method and device for calculating the remaining charging time of a power battery, a vehicle, and a storage medium. Background technique [0002] As pure electric vehicles become more and more popular, but at this stage, the power of AC charging piles is usually relatively small, and the charging time is relatively long. When charging, users often hope to get accurate remaining time of this charging. However, at this stage, most electric vehicles use the actual charging current to directly calculate the charging time, and the actual charging current is affected by factors such as ambient temperature, grid fluctuations, charging methods, thermal management, etc., resulting in large fluctuations and inaccurate charging time calculation values. Contents of the invention [0003] The embodiment of the invention discloses a method and device for calculating the remaining ch...
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IPC IPC(8): G01R31/367
CPCG01R31/367
Inventor 陈建豪
Owner GUANGZHOU XIAOPENG MOTORS TECH CO LTD