Power battery endurance mileage estimation system and method
A power battery and cruising range technology, applied in the field of power battery cruising range estimation system, can solve the problems of rapid loss of terminal driving range, accumulation of errors, impact on driving safety and user experience, etc.
Inactive Publication Date: 2020-10-30
CHERY COMML VEHICLE ANHUI
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Problems solved by technology
[0002] Energy vehicles have developed rapidly in recent years, and the number of new energy vehicles on the market has continued to increase, but product quality problems have become increasingly prominent. One of the main problems reported by the aftermarket of new energy vehicles is the inaccurate mileage. There is a problem of error accumulation in the estimation of electricity based on the ampere-hour integral method. With the accumulation of time, the error of the electricity will become larger, and the distance between the estimated mileage of the vehicle and the actual mileage that can be driven is relatively large Large, causing the car to break down suddenly on the road or the mileage at the end of the trip will drop quickly, affecting driving safety and user experience
Method used
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[0031] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.
[0032] figure 1 The structural schematic diagram of the power battery cruising range estimation system provided by the embodiment of the present invention, for the convenience of description, only shows the part related to the embodiment of the present invention.
[0033] The system includes:
[0034] Power battery, battery management system BMS, and VCU controller communicated with the battery management system;
[0035] When the vehicle is running, the battery management system BMS periodically reads the current remaining power of the power battery, and the VCU controller periodically calculates the mileage of the current cycle, and stores the current power and the mileage of the corresponding cycle in the driving behavior table;
[0036] A driving behavior table is used to record drivi...
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The invention relates to the technical field of power battery control and provides a power battery endurance mileage estimation system and method. The method comprises the steps: S1, reading the current electric quantity SOC of a power battery; S2, based on a recent driving behavior table, obtaining the driving mileage corresponding to each current set electric quantity interval; and S3, estimating the endurance mileage of the current electric quantity SOC based on the driving mileage corresponding to each current set electric quantity interval. The endurance mileage of the current electric quantity is estimated based on the driving mileage corresponding to each set electric quantity interval in the recent driving behavior; the influence of weather and battery aging degree on the endurancemileage of the electric power battery is comprehensively considered, for example, under the same condition, the endurance mileage of the same electric quantity in summer is lower than that in spring,and an air conditioner needs to be started in summer so that the accuracy of the endurance mileage of the electric quantity is improved.
Description
technical field [0001] The invention relates to the technical field of power battery control, and provides a power battery cruising range estimation system and method. Background technique [0002] Energy vehicles have developed rapidly in recent years, and the number of new energy vehicles on the market has continued to increase, but product quality problems have become increasingly prominent. One of the main problems reported by the aftermarket of new energy vehicles is the inaccurate mileage. There is a problem of error accumulation in the estimation of electricity based on the ampere-hour integral method. With the accumulation of time, the error of the electricity will become larger, and the distance between the estimated mileage of the vehicle and the actual mileage that can be driven is relatively large Large, causing the car to break down suddenly on the road or the mileage at the end of the trip drops quickly, affecting driving safety and user experience. Contents ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60L58/10B60L58/12B60W40/09
CPCB60L58/10B60L58/12B60W40/09Y02T10/70
Inventor 蔡宝来张寓李飞
Owner CHERY COMML VEHICLE ANHUI