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Adaptive charging method and charging device for electric vehicle power battery

A technology for power batteries and electric vehicles, which is applied in battery circuit devices, secondary battery charging/discharging, electric vehicles, etc. To users and other problems, to ensure the effect of battery life

Active Publication Date: 2018-11-30
HUIZHOU BNET TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this charging method, if the preset maximum charging voltage is too high, it will easily lead to overcharging of the power battery, thereby affecting the life of the power battery. If the preset maximum charging voltage is too low, the best performance of the power battery will not be fully utilized. , failed to give full play to the endurance of the power battery
Usually, in order to prevent overcharging of the power battery, manufacturers set a lower maximum charging voltage, so the cruising range of the power battery often does not meet the needs of users.

Method used

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  • Adaptive charging method and charging device for electric vehicle power battery
  • Adaptive charging method and charging device for electric vehicle power battery
  • Adaptive charging method and charging device for electric vehicle power battery

Examples

Experimental program
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Effect test

Embodiment 1

[0064] This implementation provides an adaptive charging method for a power battery of an electric vehicle. refer to figure 1 , the adaptive charging method of electric vehicle power battery includes the following steps:

[0065] S101 preset the highest charging voltage corresponding to each charging mode. The charging modes include long-mileage charging mode and normal-mileage charging mode. The highest charging voltage corresponding to the long-mileage charging mode is the first highest charging voltage V01; the highest charging voltage corresponding to the normal-mileage charging mode is the second highest charging voltage V02.

[0066] S102 selects a charging mode. The user selects the corresponding charging mode according to actual needs.

[0067] S103 Detect temperature information and voltage information of the power battery.

[0068] S104 In the selected charging mode, determine the charging current according to the temperature information and voltage information o...

Embodiment 2

[0085] This embodiment provides an adaptive charging method for a power battery of an electric vehicle, which is an improvement of Embodiment 1. The adaptive charging method for the electric vehicle power battery is usually applied to the BMS system of the electric vehicle. This embodiment is described by taking the method applied to the BMS system of the electric vehicle as an example. refer to figure 2 , the adaptive charging method of the electric vehicle power battery comprises the following steps:

[0086] S201 preset the highest charging voltage corresponding to each charging mode. The charging modes include long-mileage charging mode and normal-mileage charging mode. The highest charging voltage corresponding to the long-mileage charging mode is the first highest charging voltage V01; the highest charging voltage corresponding to the normal-mileage charging mode is the second highest charging voltage V02. As a preferred mode of this embodiment, the first highest char...

Embodiment 3

[0113] This embodiment provides an adaptive charging device for a power battery of an electric vehicle. refer to Figure 7 , the adaptive charging device of the electric vehicle power battery includes:

[0114] The parameter preset module is used to preset the highest charging voltage corresponding to each charging mode. The charging modes include long-mileage charging mode and normal-mileage charging mode. The highest charging voltage corresponding to the long-mileage charging mode is the first highest charging voltage V01; the highest charging voltage corresponding to the normal mileage charging mode is the second highest charging voltage V02 . In this embodiment, the first highest charging voltage V01 is 4.18V, and the second highest charging voltage V02 is 4.10V, that is, in the long-mileage charging mode, when the highest cell voltage of the power battery reaches 4.18V, the power battery will be Stop charging. In the normal mileage charging mode, the power battery will...

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PUM

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Abstract

The invention relates to a self-adaptive charging method and charging device for an electric automobile power battery. The method comprises the steps of presetting highest charging voltages corresponding to various charging modes; selecting a charging mode; detecting temperature information and voltage information of the power battery; and determining a charging current in the selected charging mode according to the temperature information and voltage information of the power battery. The device comprises a parameter presetting module, a charging mode selection module, a temperature collection module and a voltage collection module, a charging current selection module and a charging module. According to the self-adaptive charging method and charging device for the electric automobile power battery provided by the invention, the maximum duration of the power battery is improved at the premise of not influencing the service life of the power battery.

Description

technical field [0001] The invention relates to the technical field of power batteries of electric vehicles, in particular to an adaptive charging method and a charging device for power batteries of electric vehicles. Background technique [0002] With the increasingly serious pollution of the environment, green and environmentally friendly new energy sources are increasingly concerned. At present, my country is vigorously promoting new energy vehicles. Electric vehicles have also been vigorously promoted as new energy vehicles. Electric vehicles use power batteries as power sources, and the performance of power batteries directly affects the use and promotion of electric vehicles. At present, the charging of power batteries generally adopts the following method: preset the highest charging voltage and cut-off charging current, when the highest single voltage reaches the preset highest charging voltage, start to drop the current for constant voltage charging, when the char...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H01M10/441H01M10/443H02J7/0013H02J7/0021H02J7/007H02J7/0077H02J7/0091Y02E60/10
Inventor 徐文赋任素云
Owner HUIZHOU BNET TECH CO LTD
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