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Method and device for controlling vehicle charging and vehicle

A vehicle and controller technology, applied in the field of vehicle control, can solve the problem of low charging efficiency of battery packs, achieve the effect of saving charging time and increasing charging power

Pending Publication Date: 2022-06-21
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present disclosure provides a method, device, and vehicle for controlling charging of a vehicle, so as to solve the problem of low charging efficiency of battery packs in a low-temperature environment in the related art

Method used

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  • Method and device for controlling vehicle charging and vehicle
  • Method and device for controlling vehicle charging and vehicle
  • Method and device for controlling vehicle charging and vehicle

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Embodiment Construction

[0023] The specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, but not to limit the present disclosure.

[0024] First, the application scenario of the present disclosure will be described. The present disclosure can be applied to the scenario of charging the battery pack of a vehicle in a low temperature environment (such as winter). In this scenario, when the vehicle is in a low temperature environment, the temperature of the battery pack is also low. According to Battery characteristics, the lower the temperature of the battery pack, the lower the allowable charging power of the battery pack. After the temperature of the battery pack is lower than a certain temperature, the battery pack cannot even withstand the charging of a small current. When the temperature of the ...

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Abstract

The invention relates to a method and device for controlling vehicle charging and a vehicle. When it is detected that a charging gun is inserted into a charging socket of the vehicle, a battery pack controller is controlled to obtain the battery pack temperature collected by a temperature sensor; the battery pack controller is used for sending the temperature of the battery pack to the vehicle control unit, controlling the heating assembly to heat the battery pack under the condition that the temperature of the battery pack is smaller than or equal to a second preset temperature threshold value, and controlling the heating assembly to stop heating the battery pack when the temperature of the heated battery pack is larger than the second preset temperature threshold value; the vehicle control unit is further used for charging the battery pack through the battery pack controller when it is determined that the battery pack temperature sent by the battery pack controller is larger than or equal to a first preset temperature threshold value; wherein the first preset temperature threshold value is smaller than the second preset temperature threshold value, so that the battery pack is flexibly controlled to be charged and heated, and the charging efficiency of the vehicle battery pack is improved.

Description

technical field [0001] The present disclosure relates to the field of vehicle control, and in particular, to a method, device and vehicle for controlling vehicle charging. Background technique [0002] When the battery pack of an electric vehicle is used in a too low ambient temperature, it will bring many problems. For example, if the battery pack is a lithium ion battery, when the battery pack is charged at a low temperature, the positive lithium will be released quickly, and the negative lithium will migrate into the interior. The speed is slow, resulting in the accumulation of lithium metal on the electrode surface, the formation of dendrites, and the short circuit of the battery. If the battery pack is a nickel-metal hydride battery, at low temperature charging, since the hydrogen storage negative electrode absorbs hydrogen slowly, the hydrogen cannot be absorbed by the hydrogen storage alloy in time, and hydrogen gas will be formed, which will increase the internal pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L58/27B60L53/00H01M10/44H01M10/48
CPCB60L58/27B60L53/00H01M10/443H01M10/486B60L2240/545Y02T10/70Y02T10/7072Y02T90/14
Inventor 刘顺
Owner GREAT WALL MOTOR CO LTD
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