摘要:
A method for reducing a total loss of charge of battery cells by balancing states of charge includes checking boundary conditions as to whether a vehicle is in the park mode, whether a previous balancing step occurred in the past by at least a defined time period, whether a temperature of a balancing unit lies below an adjustable temperature limit and whether states of charge of all battery cells exceed a minimum state of charge. Additionally, the method includes determining a need for balancing such that a check is made as to whether a maximum difference of all states of charge of all battery cells is greater than an adjustable limit state of charge. Also the method includes, balancing by the balancing units if the first two steps of the method are affirmed. The balancing resistances are connected to respective battery cells for a predetermined time.
摘要:
A method for reducing a total charge loss of battery cells by equalizing states of charge includes making an initial check as to whether a temperature of at least one balancing unit lies below a preselectable temperature limit. Thereupon a check takes place as to whether a charging process of the battery cells has completed and the state of charge of the battery cells is >90%. A determination then follows as to whether a maximum state of charge difference between battery cells lies above an adjustable limit (DELTA_SoC).
摘要:
A method of use for an electric energy store includes defining a set of states of the electric energy store. The method further includes defining at least one separation surface which separates a first subspace of first states of the electric energy store from at least one second subspace of second states of the electric energy store and detecting at least one influencing factor from the predefinable influencing factors and determining third states of the electric energy store if the electric energy store is used. The method includes estimating at least one state by evaluating at least one influencing factor, checking whether the at least one state is in a predefined subspace for the predefined time and changing use of the electric energy store such that the at least one state is in the predefined subspace at the predefined time based on the check.
摘要:
A method for reducing a total charge loss of battery cells by equalizing states of charge includes making an initial check as to whether a temperature of at least one balancing unit lies below a preselectable temperature limit. Thereupon a check takes place as to whether a charging process of the battery cells has completed and the state of charge of the battery cells is >90%. A determination then follows as to whether a maximum state of charge difference between battery cells lies above an adjustable limit (DELTA_SoC).
摘要:
The disclosure relates to a method for state of charge compensation of a battery having a plurality of battery units. The method comprises the steps of calculating a depth of discharge of each battery unit after the battery units have been charged, calculating an available charge of each battery unit before the battery units are charged, calculating a state of charge compensation requirement value on the basis of the calculated depth of discharge and the calculated available charge for each battery unit, and discharging each battery unit on the basis of the calculated state of charge compensation requirement value. The disclosure also relates to a method for charging a battery which has a plurality of battery units. Also specified are a computer program and a battery management system set up to perform the method, and a battery and a motor vehicle having a drive system connected to such a battery.
摘要:
The disclosure relates to a method for state of charge compensation of a battery having a plurality of battery units. The method comprises the steps of calculating a depth of discharge of each battery unit after the battery units have been charged, calculating an available charge of each battery unit before the battery units are charged, calculating a state of charge compensation requirement value on the basis of the calculated depth of discharge and the calculated available charge for each battery unit, and discharging each battery unit on the basis of the calculated state of charge compensation requirement value. The disclosure also relates to a method for charging a battery which has a plurality of battery units. Also specified are a computer program and a battery management system set up to perform the method, and a battery and a motor vehicle having a drive system connected to such a battery.
摘要:
A method for reducing a total loss of charge of battery cells by balancing states of charge includes checking boundary conditions as to whether a vehicle is in the park mode, whether a previous balancing step occurred in the past by at least a defined time period, whether a temperature of a balancing unit lies below an adjustable temperature limit and whether states of charge of all battery cells exceed a minimum state of charge. Additionally, the method includes determining a need for balancing such that a check is made as to whether a maximum difference of all states of charge of all battery cells is greater than an adjustable limit state of charge. Also the method includes, balancing by the balancing units if the first two steps of the method are affirmed. The balancing resistances are connected to respective battery cells for a predetermined time.
摘要:
The invention relates to a method for managing a battery comprising a plurality of battery cells, wherein a maximum value of a current that can be delivered by the battery is adjusted on the basis of a frequency distribution (44) of a root mean square current delivered by the battery. The invention further relates to a battery management system and a computer program for carrying out said method as well as to a motor vehicle comprising a battery which includes a battery management system of said type.
摘要:
The present invention relates to a method for minimizing cell aging of a battery (1) and/or a battery (1) comprising an apparatus for minimizing cell aging of the battery (1). For this the following is performed: detection of battery parameters which describe the present state of the battery (1); checking, on the basis of a preset aging model and the battery parameters, whether the state of the battery (1) is an aging state in which the cell aging of the battery (1) is less pronounced in the case of cyclic charging or discharging than in a quiescent state in which there is no charging or discharging of the battery (1); and cyclic partial discharging and partial charging of the battery (1) if the battery (1) is in such an aging state. The method according to the invention and/or the battery (1) according to the invention are characterized by reduced cell aging. This means that such a battery (1) and/or a battery (1) to which the method is applied has an extended life. This results in particular in cost advantages, ecological advantages and improved user friendliness.
摘要:
The invention relates to a method for equalising state of charge in a battery that has a plurality of battery units (2-1, 2-2). This involves provision for a state of charge value for at least one battery unit (2-1, 2-2) to be ascertained, a decision value concerning whether a prior state of charge value for the at least one battery unit (2-1, 2-2) can be updated to be ascertained, the prior state of charge value for the at least one battery unit (2-1, 2-2) to be updated in order to obtain a present state of charge value for the at least one battery unit (2-1, 2-2) if the decision value concerning whether the prior state of charge value for the at least one battery unit (2-1, 2-2) can be updated exceeds a threshold value, a state of charge equalisation requirement value to be ascertained on the basis of the present state of charge value and the at least one battery unit (2-1, 2-2) to be discharged on the basis of the ascertained state of charge equalisation requirement value. In addition, a computer program and a battery management system are specified which are designed for implementing the method, as well as a battery and a motor vehicle having a drive system which is connected to such a battery.