• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Method for adaptive charge control of a battery in a vehicle comprising the steps of: -registering information about the specific usage of said vehicle; -calculating adapted SOC limits from current battery age to EOL of said battery based on said current battery age and said information about the specific usage of said vehicle; - charging/discharging said battery according. to said adapted SOC limits.The object of the present invention is to optimise the energy window with respect to vehicle usage and remaining power to be known and by that optimising energy usage over life.Figure 2 for publication
    公开号:SE1100491A1
    申请号:SE1100491
    申请日:2011-06-23
    公开日:2011-09-12
    发明作者:Hanna Bryngelsson；Niklas Legnedahl
    申请人:Volvo Lastvagnar Ab；
    IPC主号:
    专利说明:

    15 20 25 30 _2_.
    At the beginning of battery life it is allowed to utilize a larger energy window without accelerated aging due to excessive usage. When the battery ages the energy window must be reduced in order to avoid accelerated aging due to excessive usage.
    According to known art said predefined energy 'window can also be selected according to the following: 0Using predefined maximum window (BOL) all the time - this means that using the maximum capacity all the time limited by available power. This can cause accelerated aging due to usage in high SOC levels and undesired voltage areas. The other drawback is that the remaining energy and power is not known. 0 Using a minimized window from start - This is a good solution out of lifetime and remaining capacity. The drawback is that the battery power and capacity is not utilized fully and by that maybe not having a good business case for the vehicle. 0 Switch between windows at a certain time - this is also a good solution out of lifetime but to know the remaining capacity the switch needs to be adapted for the EOL figures. There will also be a sharp line between new and old battery control.
    DESCRIPTION OF THE INVENTION The object of the present invention is to optimize the energy window with respect to ivehicle usage and remaining power to be known and by that optimizing energy usage over life. lO 15 20 25 30 35 The inventive idea is to use said information about current age of said battery aging characteristics and more information about the said specific usage of battery in order to create a function that changes the control parameters over time for said energy window in order to have an increased optimization of usage of said battery. Said inventive method can be implemented in a system for battery charge control (not disclosed) arranged in a vehicle.
    The optimization should be done with respect to energy (in ~ / outflow from the battery), power and battery life: Optimized vehicle features (fuel economy over life and performance) life: with respect to battery Remaining useable power and energy within the energy window shall be known.
    The energy window shall be optimized in such a way that it gives maximum total energy over life and acceptable power. Acceptable discharge power is defined by vehicle feature requirements and acceptable charge power is defined by vehicle fuel economy.
    Figure 2 discloses the SOC limits (1 and 2) to figure l and adapted SOC limits 21 and 22, according to where said limits have been adapted according to more specific information about the use of the vehicle where said battery is arranged. In figure 2 the adaptation of said SOC limits has been done at BOL of said battery.
    This means that according to the invention SOC limits (window) are adapted and selected according to the 10 15 20 25 30 35 _4_ needed energy in- / out flow to / from said battery during a specific use of said vehicle, for example a garbage truck performing a lot of start and stops in relatively low vehicle speeds or a city bus also performing several start and stops but driving up to a medium vehicle speed range.
    Figure 3 also discloses the SOC limits (1 and 2) according to figure 1 and adapted SOC limits 31 and 32.
    According to a further embodiment of said invention said adaptation of said SOC limits can be done during the life (or use) of said battery. This is illustrated in figure 3 where, for example, at a certain time tl of life of said. Battery said systenx for battery charge control receives information that usage of the vehicle has been changed. Said system for battery charge control will then calculate new SOC limits (window) 31 and 32 adapted to said new information.
    Said information about usage can comprise information The the the about topology where the vehicle is traveling. topology of the road is one parameter which affects energy in- / outflow to and from said battery. Also way of driving the vehicle can affect energy in- / outflow, for example increased vehicle acceleration demands more energy. Thus, said information of usage of said vehicle can comprise stored data about the way of driving said vehicle.
    In a further embodiment of said invention a navigation system or traveling route identifying system, arranged for example in the vehicle, can be used in order to identify the route that a driver of the vehicle is planning to travel. This means that information about coming topology can be used when calculating said 10 15 20 25 _5_ adapted SOC limits. This will result in an increased optimization of said SOC limits and also the usage of said battery.
    What advantages does the invention have compared to the known solutions -The remaining energy and power of the battery is known all the time.
    -The lifetime will be optimized.
    -The energy usage over lifetime is optimized -The available energy throughout time will be slowly decreasing and by that the effect in the vehicle performance is not that noticeable.
    The invention should not be deemed to be limited to the embodiments described above, but rather a number of further variants and modifications are conceivable within the scope of the following patent claims.
    Abbreviations in this application: SOC - State of charge SOH State of health BOL - Beginning of life EOL End of life
    权利要求:
    Claims (7)
    [1]
    1. 0 15 20 25 30 zssiesß, Ds, 2011-oe-21 PATENT CLAIMS l.Method for adaptive charge control of a battery in a vehicle comprising the steps of: -registering information about the specific usage of said vehicle; -calculating adapted SOC limits from current battery age to EOL of said battery based on said current battery age and said information about the specific usage of said vehicle; - charging / discharging said battery according to said adapted SOC limits.
    [2]
    2.The method as claimed in claim l, characterized in that said information about the specific usage of said battery comprising needed energy in- / out flow to / from said battery during a specific use of said vehicle.
    [3]
    3.The method as claimed in the preceding claim, characterized in that said registering of said information about the specific usage of said battery is performed at BOL of said battery.
    [4]
    4.The method as claimed in claim l, characterized in that said calculation and adaptation of said SOC limits can be done continuously during the life (or use) of said battery.
    [5]
    5. The method as claimed in the preceding claim, characterized in that said information about the specific usage of said battery comprising _7_. information about topology where the vehicle is traveling.
    [6]
    6.The method as claimed in the preceding claim, 5 characterized in that said information about the specific usage of said battery additionally comprising information about way of driving the vehicle. 10
    [7]
    7.The method as claimed in the two preceding claims, characterized in that said information about the specific usage of said battery additionally comprising information about coming route a driver of the vehicle is planning to drive. 15
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    WO2019007186A1|2017-07-03|2019-01-10|Ningbo Geely Automobile Research & Development Co., Ltd.|Method and electronic device for managing power limit|
    WO2021123254A1|2019-12-19|2021-06-24|Bombardier Transportation Gmbh|Predictive battery charging for battery-operated rail vehicles|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US36199210P| true| 2010-07-07|2010-07-07|
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