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Xiaomi Battery Technology New Breakthrough: Small Volume, Large Capacity, Security Protection

by Kamlesh Bhati
December 10, 2021
Xiaomi Battery Technology New Breakthrough
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Xiaomi Battery Technology New Breakthrough

Today, officials announced Xiaomi’s breakthrough in battery technology. According to the introduction, Xiaomi’s new generation of battery technology, the first time to achieve power battery-level high silicon lithium technology applied to cell phones, silicon content increased by 3 times, combined with a comprehensive upgrade of the packaging technology, the same volume of battery capacity increased by 10%, the battery life increased by 100 minutes.

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However, it did not mention the specific benchmark volume or capacity under which the battery life is improved. In addition, the battery is equipped with Xiaomi Surge Power chip, through self-research algorithms and underlying data analysis, from hardware, software to the cloud for all-round security protection, to achieve a “small volume, large capacity, security protection” as one of the black technology, to enhance the user experience. To better understand, Xiaomi released the following article. (Translated).

Xiaomi Battery Technology New Breakthrough

The first time to achieve power battery-level high silicon lithium technology applied to cell phones, silicon content increased by 3 times, combined with a comprehensive upgrade of the packaging technology, the same volume of the battery capacity increased by 10%.

In addition, the battery is equipped with Xiaomi Surge Power chip, through self-research algorithms and underlying data analysis, from hardware, software to the cloud for all-round security protection, to achieve a “small volume, large capacity, security protection” as one of the black technology, to fully enhance the user experience. The new generation of battery technology has improved the silicon content and the security of the battery.

The new generation of battery technology raises the silicon content to a new level, increasing the capacity of a single cell by 8% under the high power of 67W, and combining with the highly integrated packaging technology, the battery capacity is increased by 10% and the range is increased by 100min, which will be in mass production in the second half of next year.

Power battery-grade high silicon technology: the era of high silicon negative electrode for cell phones has come.

Xiaomi’s new battery with power battery-grade high silicon technology introduces higher silicon content of high silicon lithium supplement and gradient pole piece technology, successfully adding a higher proportion of silicon material in the negative electrode, which is three times the silicon content of traditional cell phone silicon-oxygen negative electrode battery, to obtain higher energy density, which can make the fast-charging battery energy density up to 740Wh/L. At the same time, it can also solve the problems of low first effect, high expansion, and cycle decay that is gradually amplified with the increase of silicon ratio. expansion, cycle decay, and other problems.

Among them, lithium replenishment technology is the first time applied to cell phone batteries. By laminating ultra-thin lithium foil on the surface of the negative electrode, the lithium metal can directly replenish the lithium lost during the activation process under the effect of electrochemical reaction, thus compensating for the initial capacity loss of the battery. At the same time, the high risk of lithium metal also ceases to exist with the capacity compensation in this process. Thus, the lithium replenishment technology of the pole piece provides a safe and reliable range experience.

Xiaomi Battery Technology New Breakthrough

In addition, the gradient electrode technology breaks the technical limitation of the traditional single-layer electrode and adopts the composite design of different materials from the inner layer to the outer layer: high-energy silicon material is distributed in the inner layer and fast-charging graphite material is distributed in the outer surface layer to realize the gradient layer design of electrode, which solves the problem of compatibility between high energy density and fast-charging performance.

Xiaomi Battery Technology New Breakthrough

Highly integrated packaging technology is more energy-efficient.

Highly integrated packaging mainly consists of MCP and MNP technology, which makes battery stacking more compact and effectively improves inert space utilization.

MCP is Xiaomi’s first cell phone battery packaging technology, which achieves Z-shaped safe stacking of battery cells through precise positioning of the top seal of the cell and strict control of the bending angle. At the same time, PCM no longer lies flat, 90 standing and the battery cell close together, can significantly reduce the height of the battery, can more fully utilize the battery space, improve the whole protection plate and the head of the battery cell solidity and safety.

Xiaomi Battery Technology New Breakthrough

MNP through system-level packaging technology, combining a variety of electronic devices in one package to achieve the same multiple functions as the SOC, to achieve PCM thin and light, multi-function, high reliability, more compact battery package, size reduction of 40% +.

Xiaomi Surge Power chip makes security in every way.

Xiaomi Surge Power Chip, as the core of intelligent battery system, is supported by battery material information data, user battery big data, and battery encryption system to carry out algorithm evolution and underlying data analysis to achieve all-round battery safety while extending battery life and improving user experience.

At the same time, it breaks through the industry’s battery chip technology and exclusively develops new functions of ISP and SOA to make the combination of the battery cell, battery, and system more efficient and further make the battery safer and healthier.

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Xiaomi Surge Power chip

Using the local monitoring function of Xiaomi Surge power chip, it can realize intelligent detection of user’s night charging behavior, open night battery maintenance, avoid long time full charge state, delay battery aging, and extend battery life. At the same time, combined with Xiaomi’s industry-first battery time-domain intelligence technology, it can provide battery maintenance for users after detecting the high-temperature season, reducing the battery high temperature aging factor and extending the battery life.

Through Xiaomi’s first low-power Rolling Battery Lifetime battery monitoring, the battery aging scenario is managed and maintained through daily and weekly battery usage habits calculations. It connects the battery, terminal, and cloud, intelligently identifies the battery, intelligently selects the charge, and intelligently alerts the unofficial battery from unofficial harm.

Light, thin, long life, intelligent core, this is the fully upgraded Xiaomi new generation battery technology.

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Tags: Xiaomi
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