Overheat protection technology for storage battery case of electric vehicle

Abstract

The invention discloses an overheat protection technology for a storage battery case of an electric vehicle. Low-temperature thermostat switches (001), high-temperature thermostat switches (002), a storage battery (003), a diode (004) and the like are involved, wherein the low-temperature thermostat switches (001) are connected in parallel with the diode (004) to form a low-temperature thermostat module which is connected in series with the high-temperature thermostat switches (002) and the storage battery (003); the low-temperature thermostat module is used for protecting the storage battery (003) from being damaged by overheat in a charging process; the high-temperature thermostat switches (002) are used for preventing an electric vehicle failure and even a fire accident caused by instantaneous overheat, due to line short-circuit, of a wire or the storage battery (003).

Description

technical field [0001] The invention relates to an overheating protection technology for a battery box of an electric vehicle, which belongs to the technical field of thermal protection, especially for an electric vehicle using a storage battery, and is also applicable to the overheating protection of the electric vehicle. Background technique [0002] Electric vehicles generally refer to electric mopeds or electric bicycles. Due to their low price and low operating costs, electric vehicles are very popular among ordinary working families. They have a high penetration rate in plain areas and have become the main means of transportation for people. [0003] The biggest problem with electric vehicles is the battery, which generally needs to be replaced every one to two years, which is the largest part of the cost of using an electric vehicle. The majority of electric vehicle users are very concerned about the battery. [0004] The charging of the battery is a very important th...

AI Technical Summary

Problems solved by technology

[0011] The patent "An Overheat Protector for Electric Vehicle Batteries" is an invention about the structure of thermal protection components, not a complete protection solution; it uses heat-sensitive metal to make a temperature control switch in the battery box. When the temperature of the control switch in the battery box reaches a certain value, the electrical circuit of the battery can be disconnected, and the battery can neither be charged nor used for electricity. The use of the car; but the temperature in the battery box is different from the temperature of the battery, especially the temperature of each battery, which cannot better protect each battery

[0012] The patent of "Electric Vehicle Charging Circuit to Prevent Battery Overheating" is to place a temperature sensor in the battery box and add a wire to control the working state of the charger for charging protection. Transformation, high equipment cost and single protection function, and low reliability

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