A power battery full temperature field calibration system and calibration method
A power battery and calibration system technology, applied to secondary batteries, circuits, electrical components, etc., can solve problems such as the difference between the temperature field and the actual temperature field, and achieve the effect of ensuring driving safety
Active Publication Date: 2022-02-18
BEIJING ELECTRIC VEHICLE
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[0005] The embodiment of the present invention provides a power battery full temperature field calibration system and calibration method to solve the problem of the difference between the temperature field acquired by the temperature sensor and the actual temperature field due to the limited setting of the temperature sensor on the power battery system
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0042] Aiming at the problem that the temperature field acquired by the temperature sensor is different from the actual temperature field due to the limited setting of the temperature sensor on the power battery system, the present invention provides a power battery full temperature field calibration system and calibration method.
[0043] Such as figure 1 As shown, the embodiment of the present invention provides a power battery full temperature field calibration system, including:
[0044] A high and low temperature environment cabin, the power battery to be calibrated is inside the high and low temperature environment cabin; wherein, in each cell module of the power battery, a part of the cells are arranged with negative temperature coefficient N...
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The invention provides a power battery full temperature field calibration system and a calibration method, which relate to the technical field of power batteries. The power battery full temperature field calibration system includes: a high and low temperature environment chamber, the power battery to be calibrated is inside the high and low temperature environment chamber; wherein, in each cell module of the power battery, a part of the cells are arranged with NTC temperature sensor, thermocouples are arranged on the outside of part of the cells; charge and discharge testing machine, connected to the power battery through a high-voltage connection line; the first temperature collection device, connected to the thermocouple; the second temperature collection device, connected to the NTC temperature Sensor connection. In the above scheme, the temperature collected by the NTC temperature sensor is corrected according to the temperature collected by the thermocouple, and the calibrated temperature field is obtained, so that the temperature collected by the NTC temperature sensor can represent the real temperature field of the battery system after correction, which is safer , more precisely serve the execution of BMS strategy.
Description
technical field [0001] The invention relates to the technical field of power batteries, in particular to a power battery full temperature field calibration system and calibration method. Background technique [0002] With the development of science and technology, automobiles have become an indispensable means of transportation in people's daily life; as fuel is a non-renewable resource, in order to reduce the consumption of fuel, more and more automobile manufacturers are gradually devoting themselves to the research of pure electric vehicles and Production. [0003] At present, in the temperature acquisition link of the power battery system, limited by the pressure of BMS sub-board acquisition channels, space, process realization, and cost, the temperature acquisition quantity of mass-produced battery products often cannot realize the acquisition of all batteries. The module arranges two temperature collection points, or even one. The small amount of temperature collectio...
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IPC IPC(8): H01M10/48H01M10/633H01M10/637
CPCH01M10/486H01M10/633H01M10/637Y02E60/10
Inventor 赵振洋代康伟盛军李彦良彭方爰
Owner BEIJING ELECTRIC VEHICLE