"Battery is also an energetic material, safety is always the first place, we must not ignore battery safety while pursuing higher energy density batteries. ”

Yang Jie said: "Now there are more and more mobile phone users, and soon mobile phones will become inseparable from the existence of most people, and the devices in the mobile phone will be more and more stuffed, the power consumption will be larger and larger, and the space left for the battery will be less and less." ”

"The number of transistors that can be accommodated in integrated circuit chips has increased exponentially, about every 18 months, and more devices have to be added, and the power consumed will only be more and more, and the improvement process of battery performance is step-shaped, on the basis of existing battery materials, the energy density can be increased by 2%-3% per year is already quite good, and there is a scissors difference between the performance improvement of electronic products and the energy density improvement of the battery, and it continues to expand over time. ”

"Now not only our Huaxing communication equipment company, almost all manufacturers are pursuing to install more power in a limited volume to extend the battery life. ”

Huaxing Group is the first company to start producing smart phones, in this regard, the improvement of battery energy is also the most thirsty, in order to provide more energy in a smaller volume, can only find ways to squeeze the space occupied by auxiliary materials, to the battery "slimming", improve the volume energy density of the battery, and extend the battery life of the mobile phone.

The lithium-ion battery used in the mobile phone battery is to realize the charging and discharging function of the battery through the back and forth movement of lithium ions between the positive electrode and the negative electrode, and when charging, the current of the charger drives out the lithium ions in the positive electrode, and these lithium ions "swim" to the negative electrode through the electrolyte between the positive electrode and the negative electrode.

When discharged, these lithium ions "swim" back to the positive electrode through the electrolyte from the negative electrode, providing electrical energy for the mobile phone to work.

In this process, the positive electrode and the negative electrode must not be in direct contact, otherwise a short circuit will occur, resulting in abnormal heating of the battery, and even leading to fire and other dangers.

In order to ensure that the positive and negative electrodes inside the battery do not touch each other, and that there is sufficient electrolyte between them to "swim" the lithium ions back and forth, this is achieved through the key material - the separator.

For the same battery, if the separator film becomes thinner and the volume of this part is reduced, a little more positive and negative electrode materials can be installed, which can improve the energy density of the battery and the battery life of the mobile phone.

Aode Technology has now started to use thinner separator materials on mobile phone batteries, and these separator materials are now produced by Aode Technology itself.

However, the thinner the separator, the more stringent the process requirements, and the slightest quality defect or battery process error may cause separator defects, which in turn will lead to a short circuit in the battery.

After Huaxing Group took the lead in producing smart phones, in order to ensure that the mobile phone will not be affected by the quality of miscellaneous batteries on the market, non-removable batteries are also used, and now the batteries produced by Aode Technology Company are used.

Yang Jie naturally doesn't want this kind of battery to become an irregular zhà dàn.

Before the rebirth, South Korea's Samsung was hit hard because of the mobile phone battery bào zhà, fell into a huge business and brand crisis, with a loss of 5 billion US dollars, and also smashed one of its high-end mobile phone brands, and the impact is also far-reaching, pushing Samsung to the most dangerous situation in history, not only suffered huge economic losses, but also caused immeasurable brand damage.

Yang Jie will definitely not allow such a thing to be staged in his own company.

In fact, a few years ago, Huaxing Group asked Aode Technology Company to formulate multiple battery safety inspection measures to ensure that the battery is safe and reliable.

These inspection measures include battery appearance inspection, X-ray inspection, cell disassembly inspection, charge and discharge inspection, and safety inspection in simulated user use scenarios, etc., which are very strict.

In the design and development of battery products, a set of very strict safety standards have been established for the battery, including the overall design and materials used, the strength and capacity of equipment hardware and the improved software algorithm, etc., in order to achieve a safer battery charging temperature, charging current and charging duration, battery product development, production and quality control and other process standards are implemented in accordance with the standards of avionics, and domestic and foreign battery manufacturers have not reached this standard.

Huaxing communication equipment company has also introduced special equipment to detect the inside of the battery in the mobile phone manufacturing process, confirm the problems inside the battery, and conduct a large number of charging and discharging tests on the battery and the whole mobile phone before the mobile phone leaves the factory, adding an insurance for the safety of the mobile phone.

Yang Jie attaches great importance to the safety of the battery, even if Aode Technology Company implements strict standards, but Yang Jie will often remind the following R&D personnel and management.

In addition, Huaxing Group will plan to launch a gallium nitride power supply to provide faster charging speed, and this technology must be combined with a new type of large rechargeable battery to be promoted. ”

Yang Jie said.

Wan Zihao was taken aback: "Ah, I know that Huaxing Group has made great progress in gallium nitride technology, but I didn't expect you to devolve this technology to consumer electronics so soon." ”

Yang Jie said with a smile: "Now Huaxing Group has mastered the six-inch gallium nitride wafer preparation technology and process technology, as early as a few years ago developed a high electron mobility transistor based on gallium nitride substrate, to achieve a benchmark power gain in the frequency range of gigaherds, now the cost of gallium nitride products has been reduced, the head office also hopes to start this device in consumer electronics products." ”

Previously, these GaN devices of Huaxing Group were mainly used in the military field, based on gallium nitride devices have long been widely used in fighter jets, radars and other military equipment efficient and stable gallium nitride device equipment, in the civilian field is mainly concentrated in communication base station equipment, satellite communication equipment, laser technology products, fuel cell vehicles, power equipment, high-end servers and other equipment.

After Huaxing Group mastered the six-inch gallium nitride wafer process technology, the cost of these devices has begun to drop significantly.

For consumer-grade power conversion semiconductor devices, the requirements are clear, that is, high efficiency, high reliability, controllability, and low cost, especially cost is the most important, and devices that violate these requirements cannot become mainstream.

Now Huaxing Group's gallium nitride low-power device has been controlled at about 60 yuan, the entire 65W power supply is only the size of a lipstick pen, and the cost is controlled at 200 yuan.