| 摘要 |
A passive, inexpensive, and simple temperature responsive charging control circuit ( 10 ) which permits maximum charging of a rechargeable battery ( 14 ) while preventing overheating of the battery. The charging control circuit is configured for use with a solar collector ( 12 ) that charges the battery and comprises a thermistor ( 50 ) interposed between the solar collector and the rechargeable battery. The thermistor exhibits low resistance when it is cool to provide nearly unrestricted charging of the battery and then progressively increases in resistance as it heats up to restrict the amount of battery charging. This provides maximum battery charging in the morning and other cool conditions while preventing overheating and resultant battery damage as ambient temperatures and/or internally-generated heat increases from a high charging rate.
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