EP2195875A1

EP2195875A1 - Accumulator for passenger cars and commercial vehicles

Info

Publication number: EP2195875A1
Application number: EP08787131A
Authority: EP
Inventors: Jan-Michael Graehn; Ian Faye
Original assignee: Robert Bosch GmbH
Current assignee: Robert Bosch GmbH
Priority date: 2007-09-25
Filing date: 2008-08-12
Publication date: 2010-06-16
Also published as: KR20100067653A; US20100287078A1; CN101809806A; DE102007045633A1; JP2011501934A; WO2009040188A1

Abstract

An accumulator (1) for passenger cars or commercial vehicles, comprising a device (3) for storing electric energy, two electric connecting devices (4), in particular connecting contacts (5), for electrically connecting the device (3) for storing electric energy to an electric drive motor (21), is to provide a financial incentive for the user for moderate handling of the accumulator (1). Said task is achieved in that at least one sensor (6, 17, 18, 19) is configured for detecting measurement data in regard to the electric current and/or the electric voltage of the accumulator (1) taken from and/or fed to the accumulator (1) and/or the temperature of the accumulator (1) and/or the installation time and/or the electric current time of the accumulator (1).

Description

Accumulator for passenger and commercial vehicles

The present invention relates to an accumulator for passenger or commercial vehicles, comprising a device for storing electrical energy, two electrical connection devices, in particular connection contacts, for electrical connection of the device with an electric drive motor. Moreover, the invention relates to a passenger or commercial vehicle with an accumulator and an electric drive motor supplied with electric power from the accumulator, and a device for an electric filling station for determining the amount of an invoice amount of a change of a rechargeable battery in a passenger or commercial vehicle. The invention further relates to a method for determining the usage-dependent costs of using a rechargeable battery in a passenger or commercial vehicle.

In passenger and commercial vehicles are currently predominantly internal combustion engines for the conversion of hydrocarbons, z. As gasoline, diesel, natural gas or alcohol, stored chemical energy used in mechanical energy for the movement of passenger and commercial vehicle. Fossil energy sources and acreage for biofuels are limited, so that electricity from renewable energy sources, such. B. from wind, sun and water, for the drive of passenger and commercial vehicles will become increasingly important. The existing and expected future for the foreseeable future electric accumulators have a low energy density, so that with moderate size and weight of the accumulators only a relatively short range of a passenger and commercial vehicle compared to passenger and commercial vehicles with internal combustion engines can be achieved.

The scope of passenger and commercial vehicles with electric drive is therefore for local areas, such. As a city or conurbation, with daily distances less than 150 km seen. The existing in passenger and commercial vehicles with internal combustion engines mobility even over long distances can not with accumulators due to the low energy density and the long charging time be achieved. In order to achieve greater mobility with passenger and commercial vehicles with electric drive, fully charged batteries can be exchanged for an empty or almost empty accumulator of a passenger and commercial vehicle with electric drive in electric filling stations, so that the adverse long charging times of batteries no Have meaning.

Electrical accumulators age and losses occur over time, so that the useful and nominal capacity and the maximum electrical power of the accumulator is reduced. The charging and discharging of accumulators generally causes heat losses, d. H. the accumulator heats up. High withdrawal rates cause higher losses than lower withdrawal rates. The aging mechanisms of the accumulator are accelerated by high removal rates and high temperatures. A user of a rechargeable battery, which demands high performance from the rechargeable battery, damages it more severely than a user who only takes small and moderate benefits. Furthermore, losses as well as a shortening of the life of the battery can be increased by a deep discharge.

The success of a battery replacement system for passenger and commercial vehicles with electric drive depends on the resulting business costs. Improper use and discharge of the batteries by users causes high costs on the part of the operator of a battery replacement system, which are also to be borne by those who use batteries moderately. High costs for the accumulators can make a battery replacement system unprofitable.

The object of the present invention is therefore an accumulator, a

Passenger or commercial vehicle, a device for an electric filling station to determine the amount of the invoice amount of a change of a battery in a passenger or commercial vehicle and a method for determining the usage-related costs of using a battery in a passenger or commercial vehicle to provide for the Give users a financial incentive for a moderate handling of the accumulator.

This object is achieved with an accumulator for passenger or commercial vehicles, comprising a device for preferably chemical storage of electrical energy, two electrical connection devices, in particular terminal contacts, for the electrical connection of the device for storing electrical energy an electric drive motor, wherein at least one sensor for detecting measurement data with respect to the accumulator taken and / or supplied electric current, in particular as a function of time, and / or the voltage of the accumulator, in particular as a function of time, and / or the temperature of the accumulator, in particular in dependence on the time, and / or the installation time and / or the current time of the accumulator is formed. The electric current drawn from the accumulator and / or supplied, the electrical voltage of the accumulator and / or the temperature of the accumulator can thus be measured preferably as a function of time. In addition, for example, the maximum or minimum temperature, voltage or current can be measured. The parameters of the usage characteristic of the accumulator can thus be detected.

In a further embodiment, the charging state of the rechargeable battery and / or the rechargeable battery performance and / or the losses of the rechargeable battery can be determined as profile data with an evaluation unit preferably by means of predetermined criteria and / or functions from the measured data of the at least one sensor.

Accumulators for passenger cars and commercial vehicles for storing electrical energy are generally accumulators that store electrical energy through chemical reactions. In addition, there are also accumulators that store electrical energy on a physical path, eg. As capacitors, into consideration.

The battery performance or state-of-health (SOH) of an accumulator is determined in the evaluation unit as a function of the measured data. The nominal capacity of the accumulator is the maximum possible capacity of the accumulator. When using the accumulator only a proportion, z. 80%, of nominal capacity; this proportion is the useful capacity of the accumulator. The Akkuperformance, ie the current use and / or nominal capacity of a battery, is reduced by the use; There are losses of the useful and / or rated capacity of the accumulator. The utilization characteristic is, for example, the parameters of removal and / or recovery of electrical power, duration of a withdrawal and / or recovery of electrical power, converted electrical energy, ie the sum of the withdrawn and supplied electrical energy, charge level, in particular falling below a minimum load, Temperature of the accumulator, duration of a temperature of a battery, installation time and current time determined. From these parameters, the current Akkuperformance is determined, ie the Evaluation unit can, for. B. with stored criteria and / or functions from the parameters of the usage characteristic, which are detected by the sensors, determine the losses of the battery and from the difference of Akkuperformance before installation and during or after installation in a passenger or commercial vehicle current Determine battery performance.

In a further refinement, the profile data determined by the evaluation unit and / or the measurement data determined by the at least one sensor can be stored in a memory unit.

In a supplementary embodiment, the usage-dependent costs of the use of the accumulator in a passenger or commercial vehicle can preferably be determined by means of predetermined criteria and / or functions from the profile data and / or the measured data in the evaluation unit. The charge level of the accumulator, the battery performance, the losses of the accumulator or the usage characteristics are thus evaluated financially. Preferably, the usage characteristic, i. H. the measurement data, based on predetermined criteria and / or functions financially evaluated. For example, exceeding a certain electrical withdrawal rate per unit time or exceeding the predetermined maximum installation time per day costs a certain amount of money.

Furthermore, the financial loss of the accumulator losses, i. H. the difference between the battery performance before and during or after installation. For this purpose, the evaluation unit also has data on the battery performance before installing the accumulator.

Suitably, at least one data transmission means for transmitting the profile data and / or the measured data to a device for determining the amount of the invoice amount of a change of the accumulator and / or to a display device of the passenger or commercial vehicle and / or to the evaluation available.

In particular, a display device for displaying the profile data and / or the measured data and / or the usage-dependent costs is available. The user can thus take note of the current measurement and profile data as well as the usage-dependent ones and orient his driving style accordingly. The object is further achieved with a passenger or commercial vehicle with an accumulator and an electric drive motor supplied by the accumulator, wherein at least one sensor for acquiring measured data with respect to the battery taken and / or supplied electric current, in particular in dependence on the Time, and / or the electrical voltage of the accumulator, in particular as a function of time, and / or the temperature of the accumulator, in particular as a function of time, and / or the installation time and / or the current time of the accumulator is formed.

Expediently, with an evaluation unit preferably by means of predefined criteria and / or functions from the measurement data of the at least one sensor, the charge state of the rechargeable battery and / or the rechargeable battery performance and / or the losses of the rechargeable battery can be determined as profile data.

Preferably, the profile data determined by the evaluation unit and / or the measurement data determined by the at least one sensor can be stored in a memory unit.

In a further embodiment, the use-dependent costs of using the accumulator in a passenger vehicle or commercial vehicle can preferably be determined by means of predetermined criteria and / or functions from the profile data and / or the measured data in the evaluation unit.

In an additional embodiment, at least one data transmission means is configured for transmitting the profile data and / or the measured data to a device for determining the amount of the invoice amount of a battery change and / or to a display device and / or to the evaluation unit.

In a further embodiment, a display device is designed for displaying the profile data and / or the usage-dependent costs and / or the measurement data of the accumulator.

The above statements on the accumulator according to the invention apply analogously to the passenger and commercial vehicle according to the invention. The object is also achieved with a device for an electric filling station or a device of an electric tank for determining the amount of a bill amount of a change of a battery in a passenger or commercial vehicle, wherein at least one data receiving means and / or at least one data input means for receiving and / or entering of profile data regarding the state of charge of the

Accumulator and / or Akkuperformance and / of losses of the accumulator and / or measurement data in terms of the accumulator taken and / or supplied electric current and / or the voltage of the accumulator and / or the temperature of the accumulator and / or the installation time and / or the current time of the accumulator is formed and in a valuation unit from the profile data and / or the measured data of the accumulator usage-dependent costs can be determined.

The above statements on the accumulator according to the invention apply analogously to the device according to the invention for an electric filling station for determining the amount of the invoice amount of a change of a rechargeable battery in a passenger or commercial vehicle, wherein the evaluation unit corresponds to the evaluation unit.

The object is furthermore achieved by a method for determining the usage-dependent costs of using a rechargeable battery in a passenger or commercial vehicle with the following steps: acquiring measured data with regard to the electric current drawn and / or supplied to the rechargeable battery, in particular as a function of time, and / or the electrical voltage of the rechargeable battery, in particular as a function of time, and / or the temperature of the rechargeable battery, in particular as a function of time, and / or the installation time and / or the current time of the rechargeable battery with at least one sensor, preferably storing the measurement data in a memory unit, determining the usage-dependent costs in an evaluation unit or a valuation unit preferably by means of predetermined criteria and / or functions from the measurement data. The usage-dependent costs are thus determined in the evaluation unit or the evaluation unit as a function of the measurement data by means of preferably predetermined criteria and / or functions.

In a further refinement, the charge state of the rechargeable battery and / or the rechargeable battery performance and / or the losses of the rechargeable battery are preferably determined by means of predetermined criteria and / or functions from the measurement data in an evaluation unit or an appraisal unit. The charge level of the accumulator and / or the battery performance and / or the losses of the accumulator as Profile data are thus determined in an evaluation unit or a valuation unit as a function of the measurement data, preferably by means of predetermined criteria and / or functions. The state of charge of the accumulator prior to installation is known to the evaluation or assessment unit.

In particular, usage-dependent costs are determined from the profile data in the evaluation unit or the assessment unit by means of predefined criteria and / or functions.

The measured data and / or the profile data are expediently transmitted to a device for an electric filling station for determining the amount of an invoice amount of a change of a rechargeable battery in a passenger or commercial vehicle.

In a supplementary embodiment, the measurement data and / or the profile data and / or the usage-dependent costs are displayed in a display device. The user of a passenger or commercial vehicle can thus receive information about the usage characteristics, the battery performance and the costs it incurs.

In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawings. It shows:

1 shows a schematic view of a rechargeable battery with an evaluation unit, FIG. 2 shows two line diagrams of an electrical power drawn off the rechargeable battery and a temperature of the rechargeable battery applied to an ordinate

Accumulator in dependence on the time plotted on the abscissa time and Figure 3 is a schematic view of a passenger vehicle and a

Elektrotankstelle.

FIG. 1 shows an accumulator 1 for storing electrical energy for a passenger vehicle 2. Such rechargeable batteries 1 for supplying an electric drive motor 21 (FIG. 3) of a passenger train 2 with electric current generally have a useful capacity of at least 10 kWh, preferably at least 20 kWh. The maximum electrical power of these batteries, for example, at least 20 kW, preferably at least 40 kW to a sufficient Drive power for the passenger vehicle 2 to have available. As an accumulator 1 z. As lithium battery or a lithium polymer battery into consideration.

The accumulator 1 has a device 3 for the chemical storage of electrical current or energy. Electrical lines 20 connect the device 3 with two connection devices 5 designed as connection devices 4. At the two connection contacts 5 with a

- Pol and a + Pol, the electric current from the device 3 to the electric drive motor 21 of the passenger vehicle 2 can be forwarded (not shown). Sensors 6 may measure the temperature of the device 3, the electrical current drawn from the device 3, and the electrical voltage provided by the device. For this purpose, 1 temperature sensors 17 are mounted on the outside of the accumulator. Furthermore, a voltage measuring device 18 and an ammeter 19 are correspondingly present on the lines 20. The temperature sensors 17, the voltage measuring device 18 and the ammeter 19 as sensors 6, 17, 18, 19 transmit measured data to the electronic evaluation unit 7. In addition, in the electronic evaluation unit 7, a not shown sensor 6 for determining the period of use of the accumulator 1 is present. Under use time is understood both the time spent by the accumulator 1 in the passenger vehicle 2 (installation time) and the time that the accumulator 1 is used for the removal and / or recovery of electrical power (current time).

The electronic evaluation unit 7 calculates the charge state or state-of-charge (SOC) and the battery performance or state-of-health (SOH) from the measurement data determined by the sensors 6, 17, 18, 19. The electronic evaluation unit 7, the state of charge of the accumulator 1 prior to installation in the passenger vehicle 2 is known. Data regarding the state of charge and the battery performance are referred to as profile data. To determine the Akkuperformance the usage characteristic is used.

The usage characteristic determines the losses of the accumulator 1, ie a reduced useful and / or rated capacity and / or a reduced maximum electrical power of the accumulator 1. Losses of the accumulator 1 reduce the Akkuperformance. The higher the losses, the lower the battery performance. The valuation of the losses takes place with loss points; the more loss points are determined, the higher the losses of the accumulator. In general, the number of loss points is directly proportional to the losses of the accumulator. Height Withdrawal services, eg. B. 80% or 90% of the maximum electrical power, cause higher losses than low or moderate withdrawal rates, eg. B. 40% or 50% of the maximum electrical power of the accumulator 1. Furthermore, it must be considered over which period high or low removal rates are taken. The utilization characteristic of a rechargeable battery 1 thus depends on the removal power or the ratio of the removal power to the maximum electrical power and on the time during which a respective electrical power is drawn.

In FIG. 2, in the upper diagram, the ordinate shows the extracted electric power P and in the lower diagram, the temperature T of the accumulator 1 as a function of the time plotted on the abscissa. As a dashed horizontal line a first power level Pi and a second power level P ₂ and the power level P _{0 are shown} in the upper diagram. The power level P ₀ means that the accumulator 1 no electrical power is removed. However, the curve is partially below the power level P ₀ , which means that the battery 1 is charged during the installation time, z. B. by recuperative braking, ie that the electric drive motor 21 of the passenger vehicle 2 acts as an electric generator during braking and thus the accumulator 1 is charged. For example, the power stage Pi corresponds to 65% of the maximum electric power and the power stage P ₂ corresponds to 80% of the maximum electric power of the accumulator 1. The duration of extraction of an electric power above the power stage P ₂ is rated with more loss points than the time period above Power level Pi. In this way, the current time of a rechargeable battery 1 is evaluated. Instead of using two power levels Pi, P ₂ can only have one or at least three

Performance levels are used to determine the usage characteristics. In addition, a stepless evaluation of the extracted electrical power by means of appropriately stored in the evaluation unit 7 functions, eg. Integral, possible (not shown); the area, d. H. the electrical power, above one or more power levels can be evaluated.

In addition to or as a substitute for the extracted electrical power, according to the lower diagram in FIG. 2, the temperature T of the device 3 for determining the usage characteristic can also be used. The longer the temperature above a temperature level T _max , z. B. 45 ° C, runs, the more loss points are awarded. In addition, you can also have several temperature levels or a stepless rating the temperature by means of stored functions, eg. As integrals are performed (not shown).

At accumulators 1 losses occur even without current consumption outside the current time, so that the installation time is evaluated with loss points.

Furthermore occur on accumulators 1 losses due to the return or recovery of electricity, for example, during recuperative braking or charging from the mains at home. These losses can be evaluated analogously to the removal of electricity, for example by means of power stages or continuously, with loss points (not shown).

In addition, the converted from the accumulator 1 electrical energy, d. H. the sum of the withdrawn and supplied electrical energy, to be assessed with loss points. For example, the converted electrical energy can be rated from the size of at least one useful capacity of the accumulator or the rating can be infinitely variable (not shown).

Furthermore, an undershooting of the minimum load as part of the usage characteristic is also assessed with loss points. The higher and / or the longer the minimum charge level of the accumulator 1 is reached, the more loss points are awarded. The evaluation of the undershooting of the minimum load of the accumulator 1 can be done with one or more underflow levels or continuously (not shown).

The measurement and profile data and the loss points are stored in a memory unit 8 and the evaluation unit 7 determines the usage-dependent costs. A data transmission means 9 can transmit the measurement and profile data, the loss points and the usage-dependent costs with a radio or cable connection to a display device 11. The display device 1 can either on the

Accumulator 1 be arranged (not shown) or in the field of vision of the driver of the passenger vehicle 2 (Figure 3), z. B. on the dashboard, or the display is made with existing display means inside the passenger compartment (not shown). The driver of the passenger vehicle 2 can thus inform himself while driving about the current measurement and profile data as well as about the usage-dependent

Inform costs of his driving style. For example, the current cost per kWh are given, if the costs for a change of the accumulator 1 in an electric filling station 16 are known or certain costs are assumed.

FIG. 3 shows an electric filling station 16. The data transmission means 9 can transmit the measurement data with a radio or cable connection to a data receiving means 13 of a device 10 for determining the amount of the invoice amount of a change of the rechargeable battery 1 in an electric filling station 16 (FIG. 3). In addition, in addition to a data input means 14, the measurement data can also be input manually to the device 10. From the measured data, the usage-dependent costs are calculated in a valuation unit 15 of the device 10. A passenger vehicle 2 thus moves with an empty accumulator 1 to the electric filling station 16, where it exchanges the empty accumulator 1 for a full accumulator 1 and pays a specific price for this. The amount of the price also takes into account the usage characteristics including the falling below the minimum load. The empty accumulators 1 are charged in a charging station 12.

The tasks of the electric filling station 16 in a system for changing batteries 1 are to replace the empty batteries 1 for full batteries 1 in the passenger vehicle 2, to charge the empty batteries 1, 1 accumulators with a certain Mindestakkuperformance and a certain minimum useful capacity and minimum nominal capacity available set, comparison of the measurement and profile data of an empty accumulator 1 and a full battery 1, creating an invoice that takes into account the remaining useful capacity of the empty accumulator 1, the useful capacity of the new accumulator 1 and the Akkuperformance. Furthermore, if the battery falls below a minimum battery level or a minimum state of health (SOH) accumulators 1 are removed from the exchange system and disposed of or recycled.

An accumulator with a range of approximately 150 km for the passenger vehicle 2 is to provide 20 kWh useful capacity. 20% to 80% of the nominal capacity should be used in a moderate driving style. In addition, aging must also be taken into account, so that only 60% of the rated capacity may be used for moderate battery operation. The accumulator must therefore have a rated capacity of 33.3 kWh in order to have a useful capacity of 20 kWh with moderate use. The electric filling station 16 can make the following specifications for this accumulator 1: avoid temperatures of above 40 ° C of the device 3 and generally no electrical power higher than 35 kW (Pi) and 45 kW (P ₂ ) refer to the accumulator 1.

The accumulator 1 was in use for 18 days in the user, ie there is a fitting time of 18 days. For each day of installation time, a certain amount will be charged. The power level Pi and the power level P ₂ have been exceeded for certain times. 24% of the nominal capacity of the accumulator 1 are still present. The amounts determined by the device 10 could be composed as follows:

Package for battery change service 6, 00 €

Remaining charge 4% (= 24% -20%) -I ₁ , 65 €

Falling below the minimum load level 0, 00 € exceeding the power levels Pi 1, 90 €

Exceeding the power level P ₂ 3, 10 €

Installation time 18 days 1, 80 €

Provision of a full accumulator with 20 kWh useful capacity 12, 00 € Total: 23, 15 €

Overall, with the present invention in accumulators 1 for passenger vehicles 2, the business costs of a battery replacement system can be reduced because the individual not only the provision of a new battery 1 or a specific useful capacity is charged, but in addition also by him by his driving style incurred losses or reductions in battery performance. Thus, the individual is stopped for a moderate handling of the accumulators 1, which reduces the overall cost of the battery replacement system and increases its acceptance.

Claims

claims

1. accumulator (1) for passenger or commercial vehicles (2), comprising

a device (3) for storing electrical energy,

two electrical connection devices (4), in particular connection contacts (5), for electrical connection of the device (3) to an electric drive motor (21), characterized in that at least one sensor (6) for acquiring measured data with respect to the accumulator (1 ) and / or supplied electric current and / or the electrical voltage of the accumulator (1) and / or the temperature of the accumulator (1) and / or the installation time and / or the current time of the accumulator (1) is formed.

2. Accumulator according to claim 1, characterized in that with an evaluation unit (7) from the measured data of the at least one sensor (6) of the charge state of the accumulator (1) and / or the Akkuperformance and / or the losses of the accumulator (1) Profile data can be determined.

3. Accumulator according to claim 1 or 2, characterized in that the evaluation of the unit (7) determined profile data and / or the measured data in a memory unit (8) can be stored.

4. Accumulator according to one or more of the preceding claims, characterized in that use-dependent costs can be determined from the profile data and / or the measured data in the evaluation unit (7).

5. Accumulator according to one or more of the preceding claims, characterized in that at least one data transmission means (9) for transmitting the profile data and / or the measured data to a device (10) for determining the amount of the invoice amount of a change of the accumulator (1) and / or to a display device (11) of the passenger or commercial vehicle (2) and / or to the evaluation unit (7) is present.

6. Accumulator according to one or more of the preceding claims, characterized in that a display device (11) for displaying the profile data and / or the measured data and / or the usage-dependent costs is present.

7. passenger or commercial vehicle (2) with an accumulator (1) and one of the accumulator (1) supplied with electric power electric drive motor (21), characterized in that at least one sensor (6) for acquiring measured data with respect to the Accumulator (1) removed and / or supplied electrical

Current and / or the electrical voltage of the accumulator (1) and / or the temperature of the accumulator (1) and / or the installation time and / or the current time of the accumulator (1) is formed.

8. Passenger or commercial vehicle according to claim 7, characterized in that with an evaluation unit (7) from the measured data of at least one sensor (6) of the charge state of the accumulator (1) and / or the Akkuperformance and / or the losses of the accumulator ( 1) can be determined as profile data.

9. passenger or commercial vehicle according to claim 7 or 8, characterized in that the evaluation of the unit (7) determined profile data and / or the measured data in a memory unit (8) can be stored.

10. Passenger or commercial vehicle according to one or more of claims 7 to 9, characterized in that use-dependent costs can be determined from the profile data and / or the measured data in the evaluation unit (7).

11. Passenger or commercial vehicle according to one or more of claims 7 to 10, characterized in that at least one data transmission means (9) for

Transmission of the profile data and / or the measured data to a device (10) for determining the amount of the invoice amount of a change of the accumulator (1) and / or to a display device (11) and / or to the evaluation unit (7) is formed.

12. Passenger or commercial vehicle according to one or more of claims 7 to 11, characterized in that a display device (11) for displaying the profile data and / or the usage-dependent costs and / or the measured data of the accumulator (1) is formed.

13. Device (10) for an electric filling station for determining the amount of a bill amount of a change of a battery (1) in a passenger or commercial vehicle (2), characterized in that - at least one data receiving means (13) and / or at least one

Data input means (14) for receiving and / or inputting profile data with regard to the charge state of the accumulator and / or the battery performance and / or the losses of the accumulator (1) and / or measurement data with respect to the accumulator (1) taken and / or supplied electric current and / or the electrical voltage of the accumulator (1) and / or the temperature of the accumulator (1) and / or the installation time and / or the current time of the accumulator (1) is formed and

- In a valuation unit (15) from the profile data and / or the measurement data usage-dependent costs can be determined.

14. Method for determining the usage-dependent costs of using a rechargeable battery (1) in a passenger or commercial vehicle (2), comprising the following steps:

- Acquisition of measurement data with respect to the accumulator (1) removed and / or supplied electrical

Current and / or the electrical voltage of the accumulator (1) and / or the temperature of the accumulator (1) and / or the

Installation time and / or the current time of the accumulator (1) with at least one sensor (6), - storing the measurement data in a memory unit (8),

Determining the usage-dependent costs in an evaluation unit (7) or a valuation unit (15) by means of predetermined criteria and / or functions from the measurement data.

15. The method according to claim 14, characterized in that from the measured data in an evaluation unit (7) or a rating unit (15) as profile data of the charge level of the accumulator (1) and / or the Akkuperformance and / or the losses of the accumulator (1) are determined.

16. The method according to claim 14 or 15, characterized in that the measurement data and / or the profile data to a device (10) for an electric filling station for determining the amount of an invoice amount of a change of a rechargeable battery (1) are transmitted in a passenger or commercial vehicle ,