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Electric vehicle battery control method and system, equipment and readable storage medium

A technology of an electric vehicle battery and a control method is applied in the control field to achieve the effects of avoiding discharge and prolonging life.

Active Publication Date: 2020-06-19
FOSHAN POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the prior art focuses on the estimation of SOC and the battery management system, and does not control the battery from the discharge cut-off threshold

Method used

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  • Electric vehicle battery control method and system, equipment and readable storage medium
  • Electric vehicle battery control method and system, equipment and readable storage medium
  • Electric vehicle battery control method and system, equipment and readable storage medium

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. It is only stated here that the words for directions such as up, down, left, right, front, back, inside, and outside that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific to the present invention. limited.

[0037]figure 1 Shown is the overall flow chart of the electric vehicle battery control method of the present invention, including:

[0038] S101. Obtain the output voltage and output current of the battery.

[0039] S102. Calculate the current remaining power according to the output voltage.

[0040] S103. Determine whether the current remaining power is greater than a preset low voltage threshold.

[0041] S104. When the judgment is no, set the discharge cut-...

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Abstract

The invention discloses an electric vehicle battery control method. The method comprises the following steps: acquiring the output voltage and the output current of a battery; calculating the currentresidual electric quantity; judging whether the current residual electric quantity is greater than a preset low-voltage threshold value or not, if so, setting the discharge cut-off residual electric quantity as a preset low electric quantity threshold, if not, calculating the output power, obtaining the load power, judging whether the output power is smaller than the load power or not, if so, setting the discharge cut-off residual electric quantity as the current residual electric quantity, and if not, controlling the battery to continue to discharge, and ending the electric vehicle battery control method; and judging whether the current battery residual capacity is less than the discharge cut-off residual capacity, if so, controlling the battery to stop discharging, and if not, controlling the battery to continue discharging. Correspondingly, the invention further discloses an electric vehicle battery control system, equipment and a readable storage medium. Deep discharge of the battery can be avoided, and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to a control technology, in particular to an electric vehicle battery control method, system, equipment and readable storage medium. Background technique [0002] In recent years, many electric products, such as electric vehicles, have greatly increased the demand for lithium iron phosphate batteries. Lithium batteries can meet the energy needs of electric vehicles, and this type of battery plays an important role in the field of future power energy. There are different degrees of over-discharge phenomena in lithium batteries during use. Lithium battery overdischarge means that the discharge capacity of the lithium battery is greater than the rated capacity of the battery. If the battery is placed below a certain voltage, although the safety circuit inside the battery will be activated, the life of the battery will be damaged at this time, and the battery will even be scrapped earlier. [0003] However, the prior art focuses on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/10B60L58/12B60L58/14
CPCB60L58/10B60L58/12B60L58/14Y02T10/70
Inventor 刘学鹏
Owner FOSHAN POLYTECHNIC
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