Temperature Sensor and the “Overheat Protect” of the Charging Pile

For the new energy car owner, the charging pile has became the essential presence in the life. But since the charging pile product is out of the CCC Mandatory authentication directory, the relative criteria is only recommended, It’s not mandatory, so it may affect the security of the user. In order to control and monitor the temperature of the charging pile, avoid the situation that the temperature of the charging pile is too high, carry out “over temperature protection”, and ensure that the temperature is in the safe range of use, NTC temperature sensor is needed.

In the 3.15 gala with the theme of “fairness, integrity, secure consumption” in 2022, in addition to the food safety issues that the public has been concerned about, public safety issues such as electric vehicles are also on the list. In fact, as early as August 2019, Guangdong Institute of Product Quality Supervision and Inspection published the special monitoring results of charging pile product risk, and up to 70% of the samples had safety risks. It is understood that at that time, a total of 10 batches of electric vehicle charging pile products from 9 production enterprises were collected by risk monitoring, among which 7 batches did not meet the national standard requirements, and 3 test items of 1 batch of samples did not meet the national standard, resulting in large safety risks. It is worth noting that when the quality and safety risk level of the product is “serious risk”, it means that the charging pile product may cause catastrophic injury to consumers, leading to death, physical disability and other serious consequences. Several years have passed, but the problem in this respect has been constant.

The safety problem of electric vehicle charging pile has always been the focus of people’s attention, and “over-temperature protection” is an important measure to avoid safety hazards. In order to effectively protect the safety of charging equipment, new energy vehicles and operators, temperature sensors are installed in each charging pile, which can monitor the temperature in the charging pile at all times. Once they find that the temperature of the equipment is too high, they will inform the control module to control the temperature by reducing the power to ensure that the temperature is in the safe range.