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Electric excavator, charging method and device of electric excavator and storage medium

An electric excavator and charging method technology, applied in battery/fuel cell control devices, electric vehicles, signaling devices, etc., can solve the problem of not considering the impact of battery pack performance degradation, no scientific normative basis, and regardless of battery pack work characteristics and attenuation curve, to achieve the effect of slowing down the decay rate and preventing long-term discharge

Active Publication Date: 2021-12-28
XCMG EXCAVATOR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007](1) The impact of the working mode and working environment on the performance degradation of the battery pack is not considered during the actual use of the electric excavator
[0008](2) The working characteristics and attenuation curve of the battery pack are not considered in the actual use and charging process of the electric excavator
[0009](3) The charging timing of electric excavators depends on the user's perception, and there is no scientific and standardized basis

Method used

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  • Electric excavator, charging method and device of electric excavator and storage medium
  • Electric excavator, charging method and device of electric excavator and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a charging method of an electric excavator, such as figure 1 , Including the following steps:

[0042] Step 1, after the electric excavator is open, the system self-test, obtain battery pack parameters, including the rated battery capacity of the battery pack, battery capacity decay curve, battery pack history work, historical working temperature, rated operating current, rated operating temperature.

[0043] Among them, the battery capacity attenuation curve can be a decay curve of a battery drawn in different situations based on road durable experiments.

[0044]The battery pack history works, used to statistically get work duration, long working temperature and non-optimal operating temperature at different working modes of electric excavator, and the working temperature.

[0045] Electric excavator operating mode has a variety of, such as mining, overloading, breaking, etc., in this embodiment, in operation mode 1, operating mode 2, and operatin...

Embodiment 2

[0070] This embodiment provides a charging device for an electric excavator, such as figure 2 , Including identification modules, computing modules, and charging node determining modules. Wherein, the identification module, the computing module, and the charging node determination module are sequentially connected.

[0071] In this embodiment, the charging device is disposed on the electric excavator, and after the electric excavator is turned on, the system starts the self-test process, the identification module acquires the parameters of the electric excavator battery pack through the internal communication function, including the rated battery capacity of the battery pack, battery Capacity attenuation curve, battery pack history work, historical working temperature, rated operating current, rated operating temperature.

[0072] Among them, the capacitance capacity attenuation curve is used to obtain the degree of attenuation of different conditions set when the battery pack is ...

Embodiment 3

[0085] This embodiment provides an electric excavator comprising a charging device of an electric excavator.

[0086] This embodiment can identify the parameters of the battery pack using the charging device of the electric excavator, acquire the attenuation rate of the battery pack, acquire the remaining power of the current actual available, and determine based on the current actual residual power and selected electric excavator operating mode, determined The electric excavator is working in the working mode of the selected mode of operation, thereby determining the next charge node.

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Abstract

The invention discloses an electric excavator, a charging method and device of the electric excavator and a storage medium. The method comprises the steps of acquiring battery pack parameters; determining the attenuation rate of the battery pack according to the parameters of the battery pack and the preset weight of each parameter; determining the current battery capacity according to the attenuation rate of the battery pack, and calculating to obtain an actual residual electric quantity value; and calculating the working duration of the electric excavator in the current working mode according to the residual electric quantity value and the currently selected working mode, and selecting the next charging node according to the working duration. By identifying the current working mode, the working environment and the current capacity of the battery pack of the electric excavator, the time for the battery pack of the electric excavator to continuously discharge to the preset residual electric quantity is calculated, a scientific basis is provided for the battery pack to select the charging opportunity, the battery is prevented from discharging for a long time under a low electric quantity, and the attenuation rate of the battery pack is slowed down.

Description

Technical field [0001] The present invention relates to the field of electric excavators, and more particularly to a charging method, apparatus, and storage medium of an electric excavator and an electric excavator. Background technique [0002] With the gradual popularization of new energy technology and the national strategic requirements of carbon, hydraulic excavators have also been driven by lithium battery. Although electric hydraulic excavator is discharged, green is environmentally friendly, but any battery has a certain service life, and unregulated charge and discharge operations such as battery characteristics during use will also seriously reduce the battery life, at the same time, due to application Under a harsh working condition such as high temperature and humid, the battery has a defective defect in the electric excavator. [0003] At present, in the field of excavators, electric excavators' battery charge and discharge is basically viewing the excavator display ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/12B60L58/10B60Q9/00E02F9/20E02F9/24
CPCB60L58/12B60L58/10B60Q9/00E02F9/2091E02F9/24B60L2200/40B60L2240/54B60L2240/545B60L2240/549Y02T10/70
Inventor 张文远王飞王世阳王彦飞胡一明张将李闯居世昊张孝天
Owner XCMG EXCAVATOR MACHINERY