What is the role of the new energy vehicle battery heater
The battery pack heating system of the new energy pure electric vehicle mainly adopts the following two methods: preheating and heating, and the fuel water heating heater installs a water heating heater on the new energy electric vehicle, and heats the battery pack through heat transfer to reach the normal working temperature. The new energy high-voltage electric heater installs a PTC heater on the new energy electric vehicle, which can transfer heat to the battery pack of the electric vehicle to preheat it and keep it at a normal working temperature.
New Energy Pure Electric Vehicle Battery Pack Heating System Solution In winter, the battery life of new energy electric vehicles will generally be greatly reduced, mainly because the electrolyte viscosity of the battery pack increases at low temperatures and the charge and discharge performance of the battery pack decreases.
Theoretically: In an environment of minus 20 degrees Celsius, it is forbidden to charge lithium batteries (it will cause damage to the battery). Electric vehicles can solve the problem of preheating the battery pack of new energy vehicles at normal operating temperature by installing a car parking heater, so as to solve the problem of the decline in battery life of new energy electric vehicles in low temperature environments in winter, and avoid damage to battery packs caused by low temperature charging .
PTC heater PTC heater is also called PTC heating element, which is composed of PTC ceramic heating element and aluminum tube. This type of PTC heater has the advantages of small thermal resistance and high heat exchange efficiency. It is an electric heater with automatic constant temperature and power saving. The outstanding feature lies in the performance, that is, when the fan fails to stop, the power of the PTC heater will automatically drop sharply due to insufficient heat dissipation, and the surface temperature of the heater is maintained at around the Curie temperature (generally 250°C Up and down), so as not to cause "redness" on the surface of heaters such as electric heating tubes, so as not to cause burns, fire and other hidden dangers.
It is composed of heat-dissipating aluminum sheet, aluminum tube, conductive sheet, insulating film, ptc heating sheet, nickel-plated copper electrode terminal and high-temperature plastic electrode sheath. Due to the use of press-fit heat sinks, this product improves its heat dissipation rate, and fully considers various thermal and electrical phenomena of ptc heating elements during work. It has strong bonding force, excellent heat conduction and heat dissipation performance, high efficiency and reliability. This type of PTC heater has the advantages of small thermal resistance and high heat exchange efficiency. It is an electric heater with automatic constant temperature and power saving.
Principle of PTC heater Constant temperature heating PTC thermistor has the characteristic of constant temperature heating. The principle is that after the PTC thermistor is powered on, the self-heating temperature will make the resistance value enter the transition zone, and the surface temperature of the PTC thermistor will maintain a constant value when heated at a constant temperature. The temperature is only related to the Curie temperature of the PTC thermistor and the applied voltage, but basically has nothing to do with the ambient temperature.
