Temperature limiting device for terminating battery-charging with parallel discharging path for eliminating power-output interruptions

摘要

The present invention discloses a thermal protection device which includes a temperature limiting switch such as a thermostat to switch off a charging loop to a rechargeable battery to prevent overheating in the cells of the rechargeable battery. The thermal protection device further includes a parallel loop for continuously conducting a discharging current when the charging loop is switched off. The parallel loop include a diode which allows current to flow only in the opposite direction of the charging current through the temperature limiting switch. The power output from the rechargeable batteries is therefore not affected by the switching on and off of the temperature limiting switch for controlling the charging operations.