The new energy vehicle industry is developing rapidly, and the requirements for various components in the vehicle are constantly improving. Cartridge heaters, as efficient and precise heating components, are widely used in many key systems of new energy vehicles, such as battery thermal management, automotive air conditioning heating, charging equipment heating and automotive electronic components constant temperature control. The harsh automotive operating environment puts forward higher requirements for the performance, stability and safety of cartridge heaters, which need to adapt to vibration, high and low temperature changes and humid environments. This article elaborates on the application scenarios and technical characteristics of cartridge heaters in new energy vehicles.
The power battery is the core component of new energy vehicles, and its working temperature directly affects the battery life, charging efficiency and safety. The cartridge heater is applied to the battery thermal management system, providing constant temperature heating for the battery pack in low-temperature environments, avoiding the attenuation of battery capacity and service life caused by low temperature, and ensuring the normal charging and discharging of the battery at low temperature. The battery heating cartridge heater has the characteristics of small size, low power and uniform heating, which is installed inside the battery pack, combined with the temperature control system, to keep the battery working in the optimal temperature range (20-40°C), improving the battery's endurance and service life.
In the automotive air conditioning heating system of new energy vehicles, cartridge heaters also play an important role. Traditional fuel vehicles rely on engine waste heat for heating, while new energy vehicles have no engine waste heat available, so electric heating is required. The cartridge heater is used as the heating core of the air conditioning PTC heater, which quickly heats the air and sends it into the car to meet the heating needs of the car. The automotive-grade cartridge heater has fast heating speed, high safety, and can withstand voltage fluctuations and vibration during vehicle driving, with stable and reliable performance.
In addition, the charging equipment of new energy vehicles, such as on-board chargers and charging piles, also need cartridge heaters for low-temperature heating. In low-temperature environments, the performance of electronic components in the charging equipment decreases, affecting the charging efficiency and safety. The cartridge heater is installed inside the charging equipment to maintain the working temperature of the components, ensuring the normal operation of the charging equipment in low-temperature environments and improving the charging stability.
Automotive electronic components and sensor systems also require cartridge heaters for constant temperature control. Some precision sensors and electronic control units are sensitive to temperature, and their working accuracy will be affected in high or low temperature environments. The small-size cartridge heater is embedded near the components to provide local constant temperature heating, ensuring the accuracy and stability of the electronic components and sensors, and guaranteeing the normal operation of the vehicle control system.
The cartridge heaters used in new energy vehicles have extremely strict technical standards. First, high vibration resistance. The vehicle will produce continuous vibration during driving, so the heater must have a firm internal structure, adopt a high-compaction process, and the internal insulating powder will not loosen due to vibration, ensuring long-term stable operation. Second, wide temperature adaptability. It can adapt to the extreme environment of -40°C to 120°C in the vehicle, and the performance will not be attenuated in high and low temperature environments. Third, high safety. It has excellent insulation performance, built-in over-temperature protection, automatic power cut when over-temperature, no fire or electric leakage, complying with automotive safety standards. Fourth, miniaturization and lightweight. The vehicle space is limited, requiring the heater to be small in size, light in weight, saving installation space and reducing the vehicle's energy consumption. Fifth, long service life. It can withstand long-term frequent use and thermal cycle changes, with a service life matching the vehicle's service life, reducing the frequency of replacement and maintenance.
When selecting cartridge heaters for new energy vehicles, automotive-grade certified products must be selected, and the materials and processes must meet the automotive industry's quality requirements. The sheath is generally made of high-strength stainless steel, the heating wire is made of high-temperature resistant and anti-vibration nickel-chromium alloy, and the internal adopts high-density compaction and special sealing technology to adapt to the vehicle's operating environment. Customized design is generally carried out according to the specific installation space and temperature control requirements of the vehicle to ensure the perfect fit with the vehicle system.
In the production and testing of new energy vehicle cartridge heaters, strict quality testing is required, including vibration testing, high and low temperature cycle testing, insulation testing and service life testing, to ensure that each heater can meet the automotive-grade standards. With the rapid development of the new energy vehicle industry, the demand for automotive-grade cartridge heaters will continue to grow, and higher requirements will be placed on their performance, intelligence and integration. High-quality automotive cartridge heaters are an important guarantee for the safe and stable operation of new energy vehicles, and also a key component promoting the development of the new energy vehicle industry.
