Method and device for determining charging current of battery

A charging current and battery charging technology, which is applied in the field of electrical applications, can solve problems such as slow charging speed, and achieve the effect of ensuring charging speed and improving safety

Pending Publication Date: 2022-07-05
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The embodiment of the present invention provides a method and device for determining the charging current of the battery, so as to at least solve the technical problem of the slow charging speed of the new energy vehicle when the charging temperature rise and the charging voltage are both within the safe range

Method used

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  • Method and device for determining charging current of battery
  • Method and device for determining charging current of battery

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Embodiment 1

[0035]According to an embodiment of the present invention, an embodiment of a method for determining a charging current of a battery is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be implemented in a computer system such as a set of computer-executable instructions. and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

[0036] figure 1 is a flow chart of a method for determining battery charging current according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0037] Step S102 , building a negative electrode potential prediction model of the battery based on the target parameters of the battery.

[0038] The above target parameters include: related parameters, material parameters, thermodynamic parameters and kinetic parameters. The above negative elect...

Embodiment 2

[0118] According to another aspect of the embodiments of the present invention, corresponding to the foregoing embodiments of the method for determining a charging current of a battery, the present specification further provides an apparatus for determining a charging current of a battery. The specific implementation manner and application scenario are the same as those of the above-mentioned embodiment, and are not repeated here.

[0119] Image 6 is a structural block diagram of an apparatus for determining battery charging current according to an embodiment of the present invention, such as Image 6 As shown, the device includes:

[0120] A construction module 602 is used to construct a negative electrode potential prediction model of the battery based on the target parameter of the battery, wherein the negative electrode potential prediction model is used to estimate the negative electrode potential of the battery during the charging process of the battery;

[0121] The ...

Embodiment 3

[0132]According to another aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, where the computer-readable storage medium includes a stored program, wherein, when the program runs, the device where the computer-readable storage medium is located is controlled to execute the above method embodiments method for determining battery charge current.

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Abstract

The invention discloses a method and a device for determining charging current of a battery. The method comprises the following steps: on the basis of a target parameter of a battery, constructing a negative electrode potential estimation model of the battery, the negative electrode potential estimation model being used for estimating the negative electrode potential of the battery in the process of charging the battery; segmenting the target electric quantity interval of the battery to obtain a plurality of sub electric quantity intervals; for each sub electric quantity interval, charging the battery by adopting a plurality of charging currents, and determining a target cathode potential corresponding to each charging current based on a cathode potential estimation model; and comparing the target cathode potential with a preset potential threshold, and determining a target charging current corresponding to each sub-electric quantity interval. According to the invention, the technical problem that the charging speed is slow when the charging temperature rise and the charging voltage of the new energy vehicle are ensured to be within a safe range is solved.

Description

technical field [0001] The present invention relates to the field of electrical applications, in particular, to a method and a device for determining the charging current of a battery. Background technique [0002] With the rapid development of automobile technology, more and more people choose new energy vehicles to replace traditional fuel vehicles in pursuit of low-carbon and energy-saving travel. However, the battery charging time of new energy vehicles often troubles users. The existing battery charging mode In the case of ensuring charging safety, it is difficult to ensure a sufficiently fast charging speed, and in the case of ensuring fast charging, it is difficult to ensure the safety level of the battery during charging. [0003] For the above problems, no effective solution has been proposed yet. SUMMARY OF THE INVENTION [0004] Embodiments of the present invention provide a method and device for determining a battery charging current, so as to at least solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/00032H02J7/0047H02J7/00714H02J7/007194
Inventor 王丹孙焕丽王德平赵光宇吴俊涛陈慧明李阳刘永山王雯婷姜涛
Owner CHINA FIRST AUTOMOBILE
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