Thermal field testing and analytical processing method for battery system

A battery system, analysis and processing technology, applied in measuring electricity, measuring devices, measuring heat, etc., can solve the problems of not considering the battery thermal field, high temperature accumulation, poor battery consistency, etc., to reduce the investment in testing and debugging, and development costs. Low, distributed science effects

Inactive Publication Date: 2013-04-03
HUIZHOU EPOWER ELECTRONICS
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Problems solved by technology

[0002] In the field of power battery system application, the thermal field considered in the current design of the battery system is unreasonable and the effect is not significant, and many even do not consider the thermal field of the battery at all, resulting in uneven internal temperature of the battery system and poor consistency of the battery, resulting in " "Short boar

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Embodiment Construction

[0013] In order to facilitate those skilled in the art to understand, the present invention will be described in further detail below in conjunction with embodiment:

[0014] The battery system thermal field test and analysis processing method disclosed in this embodiment, the battery system has a cooling fan and a heater, and the method includes the following steps:

[0015] a. Determine the temperature monitoring points, and set up temperature sensors at each temperature monitoring point;

[0016] b. Charging simulation test, specifically: Put the remaining power of the battery pack in the battery system to the lower limit of voltage protection, and then connect the charger to start charging. Firstly, charge with a constant current of 1C. When the highest single cell voltage in the battery pack reaches the upper voltage limit When the threshold is reached, use the highest single voltage value for constant-voltage drop-current charging. The current drops at a step size of 0.1...

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Abstract

The invention discloses a thermal field testing and analytical processing method for a battery system. The battery system is provided with a cooling fan and a heater. The method includes the steps: a, determining temperature monitoring points; b, performing charging simulation test; c, performing discharging simulation test; and d, establishing two-dimensional temperature field models between the temperature of each monitoring point and current, between the temperature and wind speed and between the temperature and the heating capacity of the heater. The local temperature of the battery system is pertinently estimated to construct the temperature field models, the problem of unbalance of the internal temperature of the battery system is effectively solved, and heat treatment is realized. The method is low in development cost, the temperature monitoring points are scientifically distributed and can be close to the temperature field of a working condition, effective evidence is provided for thermal imbalance analysis, the practical requirements of vehicles are met, late detection debugging investment for the battery system can be effectively decreased, and late debugging is more facilitated.

Description

technical field [0001] The invention relates to the analysis technology of the thermal field of the battery system. Background technique [0002] In the field of power battery system application, the thermal field considered in the current design of the battery system is unreasonable and the effect is not significant, and many even do not consider the thermal field of the battery at all, resulting in uneven internal temperature of the battery system and poor consistency of the battery, resulting in " "Short board" effect, the overall performance of the battery system cannot be well reflected; even some battery systems cannot meet the heat dissipation problem of high-power output, resulting in the failure of battery power performance and affecting battery life; heat is not easy to dissipate, and the temperature is too high , there is a certain risk in the safety of the battery system. Contents of the invention [0003] In view of this, the technical problem to be solved by...

Claims

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Application Information

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IPC IPC(8): G01R31/36G01K13/00
Inventor 刘飞文锋阮旭松
Owner HUIZHOU EPOWER ELECTRONICS
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