Method for measuring charge and discharge capacity of a battery
A technology of discharge electricity and measurement method, which is applied in the field of spacecraft power supply, can solve the problem of inaccurate measurement of electricity meter, and achieve the effect of accurate electricity measurement, accurate battery output results, and correction of hysteresis
Active Publication Date: 2021-02-09
BEIJING INST OF SPACECRAFT SYST ENG
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Problems solved by technology
[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, a method for measuring the charge and discharge quantity of the battery is provided, which solves the problem of the actual current of the battery or the battery pack used in the spacecraft under the condition of high-power charge and discharge. , voltage and power measurement, the power system of the spacecraft can calculate and adjust the health status, management strategy and control parameters of the battery according to the measurement results; it solves the problem of battery terminal voltage check in the spacecraft in the high-power charging and discharging mode. The meter method is no longer applicable, and the traditional fuel gauge is inaccurate
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[0025] The invention overcomes the deficiencies of the prior art, provides a method for measuring the charge and discharge capacity of a battery, and solves the problem of measuring the actual current, voltage and capacity of the battery when the battery or battery pack used in the spacecraft is charged and discharged with high power. , the power system of the spacecraft can calculate and adjust the health status, management strategy and control parameters of the battery according to the measurement results; it solves the problem that the battery terminal voltage look-up table method is no longer applicable when the battery in the spacecraft is in the high-power charging and discharging mode. Inaccurate measurement of traditional fuel gauges.
[0026] The features of the present invention include: adding a current conversion acquisition circuit and a voltage conversion acquisition circuit in the battery parameter acquisition, the current acquisition circuit and the voltage acqu...
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A method for measuring battery charging and discharging power. First, a battery charging and discharging power measurement system is built, including a battery to be measured, a measurement acquisition circuit, and a power calculation module, and then the measurement acquisition circuit is controlled to collect the battery voltage, battery current, and battery temperature of the battery to be measured. , battery voltage change, battery current change, and finally calculate the battery charging and discharging power, and complete the charging and discharging power measurement. Compared with the prior art, the working mode of the short-term high-power charging and discharging of the battery in the present invention can more accurately correct the power measurement error caused by the hysteresis, dynamic internal resistance, and temperature changes in the battery discharging process, and obtain accurate battery output results. Has very good use value.
Description
technical field [0001] The invention relates to the technical field of spacecraft power supplies, in particular to a method for measuring the charge and discharge capacity of a battery. Background technique [0002] The spacecraft power system is known as the heart of the spacecraft, providing the energy required for the various load equipment of the spacecraft to work, and is the key to the stable operation of the spacecraft. In the spacecraft power supply system, the solar cell array generally generates electricity through the photoelectric effect, which provides energy for the spacecraft during the illumination period and charges the battery pack; the battery pack provides energy for the spacecraft during the non-illumination period; when the spacecraft short-term power When the demand is greater than the power generated by the solar array, the battery pack will also participate in the joint power supply as a backup power source. [0003] In the past spacecraft, most of ...
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IPC IPC(8): G01R31/385G01R31/392
Inventor 张文佳刘治钢张晓峰马亮朱立颖蔺祥宇阎冬
Owner BEIJING INST OF SPACECRAFT SYST ENG