Multi-working condition self-adaption battery management system
A technology of battery management system and multi-working conditions, which is applied in the direction of secondary battery, secondary battery repair/maintenance, battery/fuel cell control device, etc. Long-term problems, to achieve the effect of improving stability and life
Active Publication Date: 2019-04-16
JIANGXI DIBIKE
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Problems solved by technology
In the prior art, the temperature sensor is usually used in the calibration process to collect the temperature of the battery management system and the surrounding temperature. However, the temperature sensor is instantaneous, and the temperature propagation has a certain delay, especially when the car is in some working conditions (such as just starting, long-term low gear and slow speed, etc.), the temperature of the fuel auxiliary drive unit may change slowly due to slow conduction, so that the temperature acquisition process of the fuel auxiliary drive unit needs to be continuously corrected by the ambient temperature, which makes the temperature sensor in The working time at the approximate temperature is longer, which will easily cause the sensitivity of the temperature sensor to decrease
In addition, the heat exchange between the temperature of the environment where the car, engine and battery are located and the temperature of the engine and battery takes a certain amount of time, and the temperature value detected by the temperature sensor, even after being corrected for the ambient temperature, is difficult to be compared with the battery management system. How to control the battery working state such as charging or discharging to establish an accurate and fast model
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[0046] Such as figure 1 As shown, according to a preferred embodiment of the present invention, a multi-working-condition adaptive battery management system suitable for hybrid electric vehicles is provided, including:
[0047] The detection parameter set acquisition module is used to collect the detection parameter sets of N distributed batteries at the time of t1, t2, t3, t4, t5 and t6 through the temperature sensor, each set corresponds to the position of each set battery, and each Sets are included: Fuel auxiliary drive unit temperature T1 燃料 , battery temperature T1 电 and ambient temperature T1 环 , where N is an integer greater than 2;
[0048] The management system also includes
[0049] The infrared picture acquisition module is used to take pictures by infrared detectors and output the temperature T2 of the fuel-assisted driving unit of N distributed batteries during the period from time t1 to time t6 燃料 , battery temperature T2 电 The infrared picture, thus obtai...
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The invention provides a multi-working condition self-adaption battery management system suitable for an HEV (hybrid electric vehicle) to well control the batter temperature of the HEV from the angleof infrared temperature detection. The system overcomes the problem that the battery of the HEV is arranged in a distributed manner in the prior art, particularly the battery is arranged on a four-wheel-drive HEV, the fuel auxiliary drive unit doesn't have the real-time reference value to the temperature of a power auxiliary drive unit, the correction parameter of the correction battery managementsystem to the battery control is obtained, and the battery working stability is improved and the battery service life is prolonged.
Description
technical field [0001] The invention belongs to the technical field of automobile battery control, and in particular relates to a multi-working-condition self-adaptive battery management system. Background technique [0002] At present, most of the battery management systems of electric vehicles are configured in the front or rear of the vehicle in a centralized structure. However, with the development of electric vehicles, people are increasingly aware of the advantages of hybrid vehicles in terms of energy saving and driving convenience compared with electric vehicles. For the driving system of the hybrid electric vehicle widely used at present, it is provided with a fuel-assisted driving unit (usually a gasoline engine or a diesel engine) and an electric-assisted driving unit (usually a storage battery), and the two cooperate to work together. Realize the driving of hybrid electric vehicles. [0003] When a hybrid vehicle accelerates or climbs a slope, it requires the e...
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IPC IPC(8): B60L58/10H01M10/42
CPCH01M10/425H01M2010/4271Y02E60/10Y02T10/70
Inventor 刘文平
Owner JIANGXI DIBIKE