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Electric vehicle charging completed battery insulation control system

A charging complete, electric vehicle technology, applied in electric vehicles, battery/fuel cell control devices, secondary batteries, etc., can solve problems such as the cruising range of the battery and the temperature drop of the battery that affect the service life of the battery, and improve the control accuracy. , to ensure the effect of dynamic

Active Publication Date: 2022-03-29
深蓝汽车科技有限公司
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  • Abstract
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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 completed battery insulation 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 a battery insulation control system for an electric vehicle after charging. The system keeps the heating system in the power-on state after the charging reaches the full charge state or reaches the designed target charging charge capacity SOC. According to the connection state of the charging gun, the battery The monomer temperature Ti, the ambient temperature T0 and the set target temperature Tt are used to determine whether the heating system is turned on. The present invention monitors the multi-states of the battery through the judgment of the charging gun, the temperature of the battery cell, and the ambient temperature state, so as to avoid reducing the service life and cruising range of the battery due to the decrease of the battery temperature after the charging is completed.

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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Patent Type & Authority Patents(China)
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 深蓝汽车科技有限公司
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