Power battery deterioration degree test method and test device
A power battery and testing method technology, which is applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems of low work efficiency, waste of electric energy, long test time, etc., and achieve the effect of saving electric energy
Inactive Publication Date: 2015-12-30
SHENZHEN SENPAI NEW ENERGY TECH CO LTD
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Problems solved by technology
The common disadvantage of the above two methods is that both need to charge and discharge the power battery for a long time, which wastes a lot of electric energy, takes a long time to test, occupies a large area of the equipment, and has low work efficiency.
The battery charging and discharging process will generate a lot of heat, which will affect the working environment of the workshop. Since the battery test standard requires a very strict test environment temperature, it is necessary to purchase enough air conditioners to cool down, so that the air conditioner wastes a lot of electric energy.
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Embodiment 1
[0034] Embodiment 1 of the present invention provides a method for testing the deterioration degree of a power battery. figure 1 It is a schematic flow chart of an embodiment of a test method for the degree of deterioration of a power battery of the present invention, such as figure 1 As shown, the test methods for the degree of deterioration of power batteries include:
[0035] S11. Generate a periodic alternating signal.
[0036] The periodic alternating signal here may be a rectangular wave, a triangular wave, a sine wave, a sawtooth wave, a rectangular wave, a pseudo-random signal, etc., or any combination of these waveforms. These signals bring about ease of calculation in subsequent steps. For example, the inventors of the present invention found that the periodic alternating signals are 3Hz, 30Hz, 300Hz rectangular wave signals or 5Hz, 50Hz, 500Hz triangular wave signals, all of which have better effects. Of course, other types of periodic alternating signals can a...
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The invention relates to the technical field of power batteries, and provides a power battery deterioration degree test method and test device. The power battery deterioration degree test method comprises the steps that a periodic alternating signal is generated through a signal generator; the periodic alternating signal is converted into a current signal; the current signal is input positive and negative electrodes of a battery module; an output signal of the battery module is obtained; a relation between the periodic alternating signal and the output signal of the battery module is calculated according to the periodic alternating signal and the output signal of the battery module. The power battery deterioration degree test method and test device save the electric energy.
Description
technical field [0001] The invention relates to the field of power batteries, in particular to a test method and a test device for the deterioration degree of a power battery. Background technique [0002] At present, with the rapid development of new energy vehicles at home and abroad, the demand for power batteries is increasing, and the performance requirements of power batteries are getting higher and higher. At present, in the application of power batteries in the fields of electric vehicles and electric tools, multiple batteries form a battery system to work. The battery system is composed of multiple battery modules, which in turn are composed of multiple battery cells. Therefore, the consistency of the battery is an important parameter to describe the performance of the power battery. On the other hand, the performance of the power battery will deteriorate after being used for a period of time, so the test and evaluation of the degree of deterioration is very impor...
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Inventor 李革臣段志超朱锦其王旭东邱新平
Owner SHENZHEN SENPAI NEW ENERGY TECH CO LTD