A model-free fast simulation system and method for a power battery
A power battery and simulation system technology, applied in secondary battery testing, secondary battery repair/maintenance, electrical measurement, etc., can solve the problems of not being able to truly reflect the output characteristics of power batteries, poor applicability of battery models, and long simulation cycles. Achieve accurate simulation, avoid simulation error, and simple operation
Active Publication Date: 2018-09-18
SHANDONG UNIV
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Problems solved by technology
The main problems of this method are: ① Difficulty in modeling and low model accuracy; ② The applicability of the battery model is poor, and a variety of battery models need to be established to meet the simulation requirements of different types of batteries; ③ The simulation cycle is long, and multiple power batteries need to be A test to establish a power battery model; ④ can not truly reflect the output characteristics of the real power battery
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[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0033] like figure 1 As shown, the currently commonly used battery simulation methods include battery models, voltage PID controllers, battery simulators and loads. The working principle is: the input of the battery model is the load current and the initial SOC 0 The output voltage of the battery model is compared with the output voltage of the simulator as the input of the PID controller, and the battery simulator is controlled to follow the output voltage of the battery model to change, thereby realizing the simulation of the power battery by the battery simulator. The main problems of this method are: ① Difficulty in modeling and low model accuracy; ② The applicability of the battery model is poor, and a variety of battery models need to be established to meet the simulation requirements of different types of batteries; ③ The simulation cycle is lon...
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The invention discloses a power battery model-free fast simulation system and method. A thought that from one small clue one can see what is coming is adopted, and a small battery module is tested on line via a small power battery testing device; according to voltage change of the small battery module, accurate analog voltage of a large battery group can be obtained while overall consideration is give to inconsistency of battery groups; via PID closed loop control over currents and voltage, output voltage of a power battery simulating device can be controlled, and a power battery group can be rapidly and accurately simulated on line in real time. Via use of the power battery model-free fast simulation system and method, no power battery model base needs to be built in advance, simulation errors caused due to battery simulation errors can be prevented, and therefore a power battery can be rapidly and accurately simulated on line in real time.
Description
technical field [0001] The invention relates to a model-free rapid simulation system and method for a power battery. Background technique [0002] The power supply adaptability and operational flexibility of the real power battery are poor, not only need to be equipped with a large number of power batteries according to the model, but also need to be equipped with an energy management system for monitoring and management, which makes the test cost soar; the charging and testing cycle is long, which cannot meet the rapidity and continuity of the test In particular, the real power battery is a limited energy power supply system, which will decay every time it is used. It is impossible to repeat and restore the real test under the same conditions, and it is not suitable for extreme work such as emergency braking test, frequent motor start and brake test conditional test. The power battery intelligent analog equipment can completely avoid and solve the above problems. It can s...
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IPC IPC(8): G01R31/36H01M10/42
CPCG01R31/396H01M10/4285Y02E60/10
Inventor 张承慧商云龙张奇段彬李泽元周忠凯
Owner SHANDONG UNIV