Battery management system and battery simulator
First Claim
1. A battery management system comprising:
- an input which receives input signals representative of a physical quantity of a battery; and
aprocessor which calculates at least one physical quantity of the battery at least partially based on the input signals and a battery temperature, and generates an output signal derived from the calculated physical quantity;
calculates the physical quantity based on an electrochemical/physical model of the battery;
the model including at least one representation of a main electrochemical storage reaction;
calculates the battery temperature based on a temperature model of a temperature development in the battery and calculates the behaviour of the representation in dependence on the calculated battery temperature; and
derives the output signal at least partially from a state of the representation.
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Abstract
A battery management system 100 comprises input means 102 for receiving input signals, such as current or voltage, which represent a physical quantity of a battery. In operation, processing means 105 of the battery management system 100 calculate a physical quantity of the battery, such as the State of Charge, based on the input signals by using an electrochemical/physical model of the battery. The model includes a representation of a main electrochemical storage reaction, whose behaviour is calculated in dependence on a battery temperature. The processing means 105 calculates the battery temperature based on a temperature model of a temperature development in the battery. The battery management system 100 comprises output means 104 for outputting an output signal which is derived from a state of the electrochemical storage reaction. The battery management system 100 is, advantageously, used in a smart battery 10 or a battery charger/discharger 200. The model is, advantageously, also used in a battery simulator.
341 Citations
15 Claims
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1. A battery management system comprising:
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an input which receives input signals representative of a physical quantity of a battery; and
aprocessor which calculates at least one physical quantity of the battery at least partially based on the input signals and a battery temperature, and generates an output signal derived from the calculated physical quantity; calculates the physical quantity based on an electrochemical/physical model of the battery;
the model including at least one representation of a main electrochemical storage reaction;calculates the battery temperature based on a temperature model of a temperature development in the battery and calculates the behaviour of the representation in dependence on the calculated battery temperature; and derives the output signal at least partially from a state of the representation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A battery simulator comprising:
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an input for receiving an input value of at least one parameter representative of a physical quantity of a battery; and a processor which calculates at least one characteristic of a physical quantity of the battery at least partially based on the input value and a battery temperature, and which generates an output characteristic derived from the calculated characteristic of the physical quantity; characterised in that the processor calculates the battery temperature based on a temperature model of a temperature development in the battery; calculates the characteristic of the physical quantity based on an electrochemical/physical model of the battery;
the model including at least one representation of a main electrochemical storage reaction, whose behaviour depends on the calculated battery temperature; andderives the output characteristic at least partially from a state of the representation of the main electrochemical storage reaction.
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14. A method for simulating a behaviour of a battery;
- the method comprising;
receiving an input value of at least one parameter representative of a physical quantity of the battery; calculating at least one characteristic of a physical quantity of the battery at least partially based on the input value and a battery temperature; generating an output characteristic derived from the calculated characteristic of the physical quantity; characterised in that the method comprises; calculating the battery temperature based on a temperature model of a temperature development in the battery; calculating the characteristic of the physical quantity based on an electrochemical/physical model of the battery;
the model including at least one representation of a main electrochemical storage reaction whose behaviour depends on the calculated battery temperature; andderiving the output characteristic at least partially from a state of the representation of the main electrochemical storage reaction.
- the method comprising;
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15. A method for producing a battery, comprising:
simulating a characteristic of the battery, by iteratively; selecting a value for at least one parameter representative of a physical quantity of the battery; calculating at least one characteristic of a physical quantity of the battery at least partially based on the parameter value and a battery temperature, by; calculating the battery temperature based on a temperature model of a temperature development in the battery; and calculating the characteristic of the physical quantity of the battery based on an electrochemical/physical model of the battery;
the model including at least one representation of a main electrochemical storage reaction whose behaviour depends on the calculated battery temperature;
the calculated characteristic at least partially being derived from a state of the representation of the main electrochemical storage reaction;until the calculated characteristic meets a predetermined criterion; and
producing the battery from battery materials by selecting and/or adapting a chemical composition and/or physical characteristic of the battery materials according to the parameters values last selected in the iteration.
Specification