Portable intelligent storage battery parameter test method and tester
A technology for intelligent battery and parameter testing, applied in the direction of instruments, measuring electricity, measuring devices, etc., can solve the problems of restricting normal operation, energy and economic losses, unable to meet the needs of battery maintenance work, etc., and achieves high measurement accuracy and automatic resistance value. , the effect of accurate measurement
Active Publication Date: 2018-04-06
王树华
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Problems solved by technology
The "discharge method" cannot measure directly and conveniently like measuring length and weight, and cannot meet the needs of battery maintenance work
Because it is impossible to carry out effective supervision and inspection on the internal resistance and capacity of batteries, it is impossible to strictly control the quality of battery maintenance from the source of production, circulation and maintenance. "The phenomenon of abnormal trading of batteries caused a large number of qualified batteries to be scrapped ahead of time. According to relevant statistics, the average service life of batteries is only 60% of the design life, resulting in huge energy and economic losses, seriously restricting the development of the national economy and the reform and opening up. Work properly
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[0030] Such as figure 1 As shown, the portable intelligent battery parameter tester is composed of two parts: an internal resistance capacity test device and a discharge characteristic curve test device.
[0031] The internal resistance capacity testing device comprises a fixed load sensor 1 with internal resistance and capacity sampling terminals B and C, a differential amplifier 2, a filter 3, an A / D converter 4, a single-chip microcomputer 5, a voice prompt circuit 6, and a liquid crystal display 7 , a miniature printer 8, an EEPROM memory 9, an empty / load judging circuit 10 and a keyboard 11; the single-chip microcomputer 5 adopts the 89C51 series high-performance single-chip microcomputer, and the A / D converter 4 adopts high-performance Σ-Δ sampling technology and LC 2 A / D7701 converter of MOS process technology. The output signal lines 106 and 107 of the fixed load sensor 1 output the empty / load voltage and discharge current detection signals through the signal lines, a...
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The invention discloses a portable intelligent storage battery parameter test method and a tester, wherein the tester comprises an internal resistance capacity testing apparatus and a discharge characteristics curve testing apparatus. The method comprises the steps of measuring the storage battery internal resistance by direct current dynamic voltage decrease internal resistance method; measuring the storage battery capacity by internal resistance-capacity curve method; inputting the internal resistance-capacity curve that has the model and specification corresponding to the measured storage battery into an EEPROM memory of the storage battery parameter tester before measuring the capacity; using a fixed load sensor that has a resistance corresponding to the model and specification of the measured storage battery by direct current dynamic voltage decrease internal resistance method when measuring the capacity; in this way, measuring the direct current dynamic internal resistance of the storage battery when the measured storage battery is under direct current dynamic instant impact discharge state; then performing calculating through a one-chip microcomputer of the storage battery parameter tester and the internal resistance-capacity curve stored in the parameter tester to get the storage battery capacity.
Description
technical field [0001] The invention relates to a portable intelligent storage battery parameter test method and a tester. Background technique [0002] Batteries have been widely used in all walks of life in industry, agriculture, military and national economic development. The "discharge characteristic curve", internal resistance, capacity and other parameters of the battery are important parameters to measure the quality of the battery. Direct, convenient and accurate measurement of the battery "Discharge characteristic curve", internal resistance, capacity and other parameters are the key to ensure the quality of battery maintenance in the production, circulation, maintenance and other links of the battery. When the "rated capacity" battery is discharged at a certain constant current, the curve of the discharge terminal voltage changing with time is called the "discharge characteristic curve" of the battery. This curve is the standard for measuring the internal resistanc...
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IPC IPC(8): G01R31/36
Inventor 王树华
Owner 王树华