| 摘要 |
<p>A tester for testing a heavy current battery (13) includes a load (17) and a flat battery conditioner (11) for connection to the battery. Measurement circuits (19) provide information relating to the terminal voltage, temperature and charging current at the battery, to a microprocessor (12). A method of testing a battery involves measuring the battery output voltage and determining therefrom if the battery is charged sufficiently to enable a valid heavy current discharge test to be performed and if so the test is performed using said load to draw between about 300 to 500 amps for five seconds. The battery voltages during and sometime after the test are recorded and the microprocessor rates the battery, good, bad, good requiring a recharge and requiring conditioning in order to conduct a valid test. The battery rating (R) is determined using an empirical formula based on known battery data and the parameters measured during said discharge test. Conditioning of the battery involves testing the battery for shorted cells, slow charging rate, irreversible sulphation during conditioning and rating the battery as bad, or requiring an extended charge before retesting as the case may be. If conditioning proceeds to a conclusion the heavy current discharge test is performed and the battery rating (R) is determined.</p> |
