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Power cell heat management device and method

A power battery and thermal management technology, applied in the direction of secondary batteries, circuits, electrical components, etc., can solve problems such as the inability to effectively control the battery temperature, and achieve a good cooling effect.

Inactive Publication Date: 2015-06-24
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional thermal management method always takes measures such as cooling after the temperature rises, which cannot effectively control the battery temperature

Method used

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  • Power cell heat management device and method
  • Power cell heat management device and method

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Embodiment 1

[0037] Such as figure 1 As shown, the embodiment of the present invention provides a power battery thermal management device, including:

[0038] The acquisition module is used to collect the current value output by the battery, the battery temperature value, and the ambient temperature value outside the battery in real time;

[0039] A prediction module, configured to start a first control module when the current value is higher than the preset current calibration value and the ambient temperature value is higher than the preset ambient temperature calibration value; when the When the current value is lower than the preset current calibration value and / or the ambient temperature value is lower than the preset ambient temperature calibration value, start the second control module;

[0040] The first control module, by predicting the state of the battery after the preset time period, according to the thermal model of the battery, estimates the maximum temperature value of the ...

Embodiment 2

[0051] Such as figure 2 As shown, the embodiment of the present invention also provides a power battery thermal management method, including:

[0052] S1. Collect the current value output by the battery, the temperature value of the battery, and the ambient temperature value outside the battery in real time through the acquisition module;

[0053] S2. Through the prediction module, when the current value is higher than the preset current calibration value, and the ambient temperature value is higher than the preset ambient temperature calibration value, start the first control module; when the When the current value is lower than the preset current calibration value and / or the ambient temperature value is lower than the preset ambient temperature calibration value, start the second control module;

[0054] S3. Through the first control module, by predicting the state of the battery after the preset time period, and according to the thermal model of the battery, estimate the ...

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Abstract

The invention provides a power cell heat management system and method and relates to the technical field of automobile power cells. The power cell heat management system comprises an acquisition module for real time acquisition of a current value and a cell temperature value output by the cell, a prediction module for predicting a cell heating state and determining if a heat radiation mode is started in advance according to the cell heating state, and first and second control modules respectively for controlling a cell heat radiation device. Through prediction of a cell state after preset time, the highest temperature after the predicted time can be predicted so that a cooling treatment process is carried out before cell heating and the cell temperature is in a reasonable temperature range. The power cell heat management system and method solves the problem that because of temperature hysteresis quality, the cell is cooled only after heating. The power cell heat management system and method realize effective cell heat management and guarantee high efficiency and long life operation of the cell.

Description

technical field [0001] The invention relates to the technical field of electric vehicle power batteries, in particular to a power battery thermal management device and method. Background technique [0002] The performance of power batteries is sensitive to temperature changes. The space for loading batteries in the car is limited, and the number of batteries required for normal operation is relatively large, and the batteries are all closely connected. When the vehicle is in different working conditions such as high speed, low speed, acceleration, deceleration, etc., the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation rates. In addition to the accumulation of time and the influence of space, a large amount of heat will be accumulated, so it is effective Thermal management is very important. Battery thermal management is an important part of the battery management system. The thermal management system i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/617H01M10/635
CPCY02E60/10
Inventor 赵祥日张君鸿闫丽娟
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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