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Method, device and new energy vehicle for dynamic adjustment of charging current

A charging current and dynamic adjustment technology, applied in electric vehicles, battery circuit devices, circuit devices, etc., can solve the problems of affecting battery life, increasing charger power consumption, affecting charging effect, etc., to ensure normal operation and prolong battery life Effect

Active Publication Date: 2021-05-18
SOUNDON NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when using these functional components during the charging process, the power consumption of the charger will be increased, causing the charging current of the battery to be partially shunted, and the charging process of the battery cannot be carried out according to the original charging current demand value, thereby affecting the charging effect and affecting battery life

Method used

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  • Method, device and new energy vehicle for dynamic adjustment of charging current
  • Method, device and new energy vehicle for dynamic adjustment of charging current
  • Method, device and new energy vehicle for dynamic adjustment of charging current

Examples

Experimental program
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Embodiment 1

[0054] figure 1 It is a flowchart of a charging current dynamic adjustment method provided in Embodiment 1 of the present invention, and the method includes the following steps:

[0055] Step S11: After entering the charging state, use the temperature and voltage of the battery to match the pre-established charging demand table, obtain the charging current demand value as the current request value, and control the charging current of the charger according to the current request value.

[0056] In the embodiment of the present invention, after the new energy vehicle enters the charging state, it first obtains an initial current request value through the battery management system of the vehicle, which is used to report to the charger through the control bus of the new energy vehicle, so that the charger can The current request value is the charging current corresponding to the battery input. Wherein, the new energy vehicle is pre-stored with an on-board charging demand matrix t...

Embodiment 2

[0066] figure 2 It is a flowchart of a closed-loop control charging current of a charger provided by Embodiment 2 of the present invention, including the following steps:

[0067] Step S21: Determine whether the difference between the current charging current value minus the current demand value is greater than or equal to a first preset value within a first preset time.

[0068] Step S22: If it is determined that the difference between the current charging current value minus the current demand value is greater than or equal to the first preset value, use the current charging current value minus the first preset value as the current request value.

[0069] Step S23: If it is determined that the difference between the current charging current value minus the current demand value is less than the first preset value, determine that within the second preset time, the difference between the current charging current value minus the current demand value Whether the difference is l...

Embodiment 3

[0087] Figure 6 It is a schematic structural diagram of a charging current dynamic adjustment device provided in Embodiment 4 of the present invention.

[0088] The charging current dynamic adjustment device 600 includes:

[0089] The current demand calculation module 610 is configured to use the temperature and voltage of the battery to match the pre-established charging demand table after entering the charging state, obtain the charging current demand value as the current request value, and control the charging current of the charger according to the current request value;

[0090] The current closed-loop control module 620 is configured to obtain the current charging current value of the battery, adjust the current request value according to the current charging current value, the charging current demand value and a preset time rule, and control the charging in a closed-loop manner according to the adjusted current request value The charging current of the machine.

[00...

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Abstract

The present invention provides a charging current dynamic adjustment method, device and new energy vehicle. The charging current dynamic adjustment method includes: after entering the charging state, using the temperature and voltage of the battery to match the pre-established charging demand table to obtain the charging current demand value As the current request value, and control the charging current of the charger according to the current request value; obtain the current charging current value of the battery, adjust the current request value according to the current charging current value, charging current demand value and preset time rules, and adjust the current request value according to the adjusted current request value The closed loop controls the charging current of the charger. The charging current dynamic adjustment method of the present invention, when charging a new energy vehicle, can ensure that the charging current charged into the battery remains at the required value even if there is a useful power demand for other functional components, without affecting the charging effect, and extending the battery life. life, while ensuring that other functional components of new energy vehicles can work normally.

Description

technical field [0001] The invention relates to the field of new energy vehicles, in particular to a method and device for dynamically adjusting charging current, a new energy vehicle and a computer storage medium. Background technique [0002] In the existing new energy vehicles, it is generally possible to use some of its functional components during the charging process. For example, in severe cold or hot summer, the charging process can be assisted by liquid cooling components, the battery can be heated in severe cold, and the battery can be heated in hot summer. cooling. [0003] However, when using these functional components during the charging process, the power consumption of the charger will be increased, causing the charging current of the battery to be partially shunted, and the charging process of the battery cannot be carried out according to the original charging current demand value, thereby affecting the charging effect and affecting battery life. Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00B60L53/00B60L53/62
CPCB60L53/00B60L53/62Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 陈斌徐强严丽
Owner SOUNDON NEW ENERGY TECH CO LTD