Method and device for controlling vehicle charging current

A charging current and control method technology, which is applied to battery circuit devices, circuit devices, vehicle components, etc., can solve the problem of repeated changes in charging current, and achieve the effect of reducing charging time and avoiding further increases.

Active Publication Date: 2019-06-25
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and device for controlling the charging current of a vehicle, which is used to solve the problem of repeated changes in the charging current due to excessive temperature during the charging process

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

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Embodiment Construction

[0042] 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 and specific embodiments.

[0043] The present invention provides a vehicle charging current control device, which is set in a vehicle battery management system BMS or charging equipment for controlling the charging process of a power battery. Wherein, the control device includes a processor and a memory, and the processor is used to process instructions stored in the memory to implement a method for controlling the charging current of the vehicle.

[0044] First, the "temperature warning value" is specified as the highest temperature value that occurs during the charging process, and this parameter is used as the main boundary condition; the "temperature observation time" is specified as the time scale for monitoring temperature changes. The above two parameters can...

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Abstract

The invention relates to a method and a device for controlling the vehicle charging current. The method includes the following steps: a power battery is charged at a first set current; the charging current is decreased to a second set current when the temperature of a charging socket or the temperature of a charging plug reaches a set temperature threshold; and the following process is repeated: after a set period of time, whether the current temperature of the charging socket or the current temperature of the charging plug is lower than the set temperature threshold is judged, and the currentcharging current is increased if the current temperature is lower than the set temperature threshold, wherein the charging current after increase is not higher than the first set current. In the charging process of the power battery, after charging at a charging current lasts for a set period of time, the charging current will be increased if the temperature of the charging socket or jack is nothigher than the set temperature threshold. The charging current is gradually increased under the condition that the temperature requirement is met, so that fluctuation and repeated change of the charging current are avoided, the charging time is shortened, and the damage of relevant parts such as the charging socket or plug of the vehicle is avoided.

Description

technical field [0001] The invention relates to a method and device for controlling the charging current of a vehicle, belonging to the technical field of vehicle and charging equipment control. Background technique [0002] With the expansion of the electric vehicle market, the market has higher and higher requirements for charging equipment, the charging power is gradually increased, and the charging current is increased accordingly. Due to the limitations of the existing charging contact material and manufacturing process, the large charging current leads to a rapid rise in system temperature, which is prone to failure such as ablation of various components of the system. [0003] At present, vehicles and charging equipment are equipped with temperature detection devices for components such as charging sockets and charging plugs. When the temperature reaches the set warning value, the charging current is directly halved or reduced to a certain value, and when the temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
Inventor 赵鹏辉黄建马黎阳李维范志航
Owner ZHENGZHOU YUTONG BUS CO LTD
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