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Method and device for controlling battery charging of electric vehicle and electric vehicle

A technology for charging electric vehicles and batteries, applied in the field of electric vehicle battery charging control methods, devices, and electric vehicle manufacturing, can solve the problems that electric vehicles cannot be charged or heated, and achieve the effect of increasing convenience and experience

Active Publication Date: 2016-11-16
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the technical problem that electric vehicles cannot be charged or heated under low temperature conditions in the prior art, the present invention provides a method and device for controlling battery charging of electric vehicles and an electric vehicle

Method used

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  • Method and device for controlling battery charging of electric vehicle and electric vehicle
  • Method and device for controlling battery charging of electric vehicle and electric vehicle
  • Method and device for controlling battery charging of electric vehicle and electric vehicle

Examples

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Embodiment 1

[0039] refer to figure 1 As shown, the present invention provides a method for controlling battery charging of an electric vehicle, including: step 100, when the battery of the electric vehicle establishes a charging connection with the charging pile at the first temperature, it is judged whether the battery needs to be heated; if the battery needs to be heated , to obtain the first power of the current battery; the first power includes the sum of the power required for battery heating and the current maximum allowable charging power of the battery. Step 200, if the minimum output power of the charging pile is greater than the first power, sequentially start one or more electric vehicle power-consuming accessories whose total working power is the second power until the minimum output power of the charging pile is not greater than the first power and the sum of the second power; start to heat the battery, or charge and heat the battery. Step 300, when the battery is heated to ...

Embodiment 2

[0046] refer to figure 2 As shown, corresponding to the above method, the present invention also provides a control device for charging an electric vehicle battery, including:

[0047] The judging module 10 is used to determine whether the battery needs to be heated when the battery for the electric vehicle establishes a charging connection with the charging pile at the first temperature; if the battery needs to be heated, obtain the first power of the current battery; the first power includes the heating power of the battery The sum of the required power and the current maximum allowable charging power of the battery;

[0048] The first processing module 20 is configured to sequentially start one or more electric vehicle power consumption accessories whose total working power is the second power if the minimum output power of the charging pile is greater than the first power, until the minimum output power of the charging pile is not greater than The sum of the first power ...

Embodiment 3

[0059] refer to image 3 As shown, a detailed description of the implementation process of the above-mentioned control method for charging an electric vehicle battery is carried out.

[0060] When the electric vehicle is connected to the ground fast charging pile and ready to charge, the temperature information of the battery is collected to determine whether the battery is in a state of low temperature and needs to be heated.

[0061] If heating is not required and it is proved that the temperature has little effect on the charging performance of the battery, then the battery is charged.

[0062] On the contrary, if it is detected that the temperature of the battery is lower than a preset value, the judging module judges that the battery needs to be heated. At this time, the minimum output power P0 of the charging pile can be obtained according to the agreement between the electric vehicle and the charging pile, and the power P1 required for battery heating and the current m...

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Abstract

The invention provides a method and device for controlling battery charging of an electric vehicle and an electric vehicle. The method comprises the steps of judging whether a battery needs to be heated when charging connection is built between the battery of the electric vehicle and a charging pile at a first temperature; acquiring first power of the battery currently if yes; starting one or more electric vehicle power consumption accessories with total operating power being second power in sequence if the minimum output power of the charging pile is larger than the first power till the minimum output power of the charging pile is not larger than the sum of the first power and the second power; starting to heat the battery or conducting charging and heating on the battery; stopping heating the battery and only charging the battery when the battery is heated to be higher than a second temperature. By the adoption of the method, the problem that the electric vehicle can not be charged / heated at low temperatures is solved. Meanwhile, the power consumption accessories and a control device of the electric vehicle itself are utilized, so that extra equipment and cost are not needed.

Description

technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to a control method and device for charging a battery of an electric vehicle and the electric vehicle. Background technique [0002] With the ever-changing scientific and technological progress, people's pursuit of quality of life is getting higher and higher. Cars have become an indispensable means of transportation for people's daily travel. People are becoming more and more picky about the comfort, safety and environmental protection of cars. . [0003] New energy vehicles, especially electric vehicles, have led the future development direction of automobiles, and electric vehicles have gradually entered people's daily life. [0004] In the prior art, when the electric vehicle is charged in the ground charging mode at low temperature, in order to improve the charging performance of the power battery, the heating function of the power battery needs to be activated at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/44
CPCH01M10/443Y02E60/10
Inventor 唐磊代康伟
Owner BEIJING ELECTRIC VEHICLE
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