A novel lead-acid battery temperature
liquid level sensor comprises a sensor outer cover (1). A sensor inner core (2) is arranged in the sensor outer cover (1). The sensor inner core comprises a liquid level floater (3) arranged outside the lower portion of an inner
core shell (5), a buckle (4), a temperature sensor (6) arranged in an inner cavity of the lower portion of the inner
core shell (5), and a
reed switch (7). The novel lead-acid battery temperature
liquid level sensor has the advantages that the
liquid level sensor and the temperature sensor are integrated, the size of sensors is reduced, a
liquid injection opening of a lead-acid battery is used for installation, the size of the
liquid injection opening is the same as that of an original
liquid injection opening cover, the daily utilization of the lead-acid battery is not influenced, and frequent sensor detachment and installation are not needed in the process of utilizing and charging a storage battery. A wave preventing cover and an air
discharge hole are arranged on an outer cover of each sensor, so that measuring errors caused by
electrolyte boiling liquid fluctuation in the charging process is prevented. By the adoption of the digital type temperature sensor DS18B20, the novel lead-acid battery temperature liquid
level sensor has the advantages of being simple in wire connection, not needing an external adjusting circuit, high in precision, good in reliability and strong in anti-jamming capability.