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Electric vehicle charging completion battery heat preservation control system

A charging completion, electric vehicle technology, applied in electric vehicles, battery/fuel cell control devices, secondary batteries, etc., can solve the problems that affect the service life of the battery, the mileage of the car, the temperature drop of the battery, etc.

Active Publication Date: 2021-01-05
重庆长安新能源汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It is necessary to develop a control system that continuously heats or keeps the battery warm after the charging of the electric vehicle is completed, so as to avoid the temperature drop of the battery due to the user not picking up the car in time after the charging is completed, which will affect the service life of the battery and the mileage of the car. question

Method used

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  • Electric vehicle charging completion battery heat preservation control system

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Embodiment Construction

[0018] Attached below figure 1 The present invention will be described in detail.

[0019] The electric vehicle charging completes the battery insulation control system, including the charging gun, the vehicle system, the heating system, the battery management system and the battery cell; it works as follows:

[0020] Step 1) After the charging reaches the full charge state or reaches the designed target charging charge capacity SOC, the vehicle system controls the heating system and the battery management system to maintain the power-on state; if the charging gun is not connected, go to step 2); otherwise, go to step 3 );

[0021] Step 2) The vehicle system controls the heating system and the battery management system to power off and sleep; after that, go to step 5);

[0022] Step 3) The battery management system obtains and judges the maximum temperature T of the battery cell max , minimum temperature T min , ambient temperature T 0 and the set target temperature T t ...

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Abstract

The invention discloses an electric vehicle charging completion battery thermal insulation control system, which is characterized in that after charging reaches a full charging state or reaches a designed target charging charge capacity SOC, a heating system is kept in a power-on state; and whether the heating system is started is judged according to the connection state of the charging gun, the temperature Ti of the single battery, the environment temperature T0 and the set target temperature Tt. Multi-state monitoring of the battery is started through judgment of the charging gun, the singlebattery temperature and the environment temperature state, and the situation that the service life of the battery is shortened and the endurance mileage of the battery is reduced due to the fact thatthe battery temperature is reduced after charging is completed is avoided.

Description

technical field [0001] The invention relates to the field of new energy electric vehicles, in particular to a battery insulation control system for electric vehicles after charging. Background technique [0002] With the increasingly serious environmental pollution and energy crisis, the development and application of electric vehicles has attracted more and more attention. Lithium-ion batteries are used in electric vehicles because of their advantages such as high energy density, long life, and no memory effect. The only power source is widely used. However, the performance of lithium-ion batteries is significantly affected by temperature. Under low temperature conditions, the performance of the battery will decrease, which will cause a certain attenuation of the driving process of the car. Using the battery for a long time at low temperature will affect the battery life. also have a greater impact. Therefore, it is of great significance to develop a thermal management sys...

Claims

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Application Information

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IPC IPC(8): B60L58/12B60L58/24B60L58/27H01M10/615H01M10/625H01M10/635
CPCB60L58/12B60L58/24B60L58/27H01M10/615H01M10/625H01M10/635Y02T10/70Y02E60/10
Inventor 江振文李连兴洪木南
Owner 重庆长安新能源汽车科技有限公司
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