Honeycomb Dragon Scale Armor Lithium Iron Battery's 76% grouping rate breaks the industry record with high safety and long battery life

On December 15, Honeycomb Energy held its third Battery Day event in Changzhou with the theme of "Ride the Bees and Drive the Future".

At the press conference, Yang Hongxin, Chairman and CEO of Honeycomb Energy, released a new generation of high-safety power battery system solution on behalf of Honeycomb Energy - Dragon Scale Armor Battery. The battery uses new technologies such as thermal-electric separation and spatial functional integration design to achieve a comprehensive improvement in cell safety and system safety, creating a new height in power battery safety. At the same time, it also has the advantage of long battery life. Its lithium iron phosphate version can extend the battery life of electric vehicles to over 800 kilometers, setting a new record for the battery life of lithium iron phosphate batteries.

In addition, Honeycomb Energy announced the name of its ultra-high-speed stacking technology 3.0 - "flying stacking", released high manganese iron nickel batteries and nano-mesh silicon negative electrodes, and announced the company's layout in the energy storage field, launching a "power battery + energy storage battery" dual-wheel drive strategy.

Honeycomb Energy, which is striving to be listed on the Science and Technology Innovation Board, demonstrated the ability of a startup to continuously respond to market demand with technological innovation by holding Battery Day for the third time. This not only laid the foundation for the company's continued strong growth, but also demonstrated the scientific and technological innovation capabilities of a world-class power battery company.

Improved single cell safety + system safety to better solve battery safety pain points

The major launch of this Honeycomb Battery Day - the Dragon Scale Armor Battery, provides a solution with both high safety and long battery life.

In terms of safety, CATL starts from the root cause of thermal runaway of the battery system and optimizes battery safety performance through a number of bold and innovative designs.

First of all, Dragon Scale Armor adopts an innovative explosion-proof valve design at the bottom of the short knife battery cell. Systemic risks of battery packs often come from thermal runaway of a single battery cell, and the explosion-proof valve of the battery cell in a conventional battery pack is designed at the top. Therefore, a pressure relief channel must be left above the explosion-proof valve to guide the high-temperature and high-pressure eruption materials to the side or bottom for discharge. In the process, it is very easy to spread to adjacent batteries and cause a chain reaction. The short knife battery cell explosion-proof valve used in Dragon Scale Armor is innovatively designed at the bottom. Once a battery cell thermal runaway occurs, directional pressure relief can be quickly achieved, and the eruption materials can be quickly discharged in a specified direction through a very short channel without spreading to surrounding batteries.

In addition, there is usually space between the battery cell and the bottom of the battery pack to prevent damage to the battery when the bottom collides. The bottom-out explosion-proof valve design combines the two spaces to increase volume utilization and extend driving range.

Secondly, at the battery pack level, Dragon Scale Armor adopts an advanced "thermal-electrical separation" design. Conventional battery cell explosion-proof valves and pole ears are on the same side, and the thermal runaway pressure relief area is in the same area as the high and low voltage lines. Once a battery cell has thermal runaway, the ejected material can easily damage other batteries and cause secondary hazards. The thermal-electrical separation design makes the thermal runaway pressure relief area and the power transmission area independent of each other, greatly reducing the failure probability of internal high-voltage arcing and ignition during thermal runaway, and significantly improving safety.

Third, the Dragon Scale Armor adopts a double-sided cooling design, which allows the battery cell to contact the cooling plate over a large area, allowing the cooling plate to quickly remove the heat from the battery cell, and the heat exchange capacity is increased by 70% compared to the general level. This can not only improve the safety of the battery pack in non-charging scenarios, but also significantly improve the safety of electric vehicle fast charging scenarios.

In addition, at the battery pack structure level, Honeycomb Energy also adopts a high-strength steel + elastic bracket design to establish a safe and stable pressure relief channel for thermal runaway, provide strong load-bearing and protective buffers, and avoid battery pack failures caused by collisions.

In general, the Dragon Scale Armor battery has achieved a single cell out of control that does not spread to adjacent cells, and the entire pack does not catch fire, far exceeding the national standard requirement of 5 minutes without catching fire. It has achieved a comprehensive improvement from single cell safety to system safety, providing a better high-safety solution for the battery system safety of new energy vehicles.

In terms of battery safety, SVOLT has been working hard and has made many innovations: improving the yield rate of battery cells through ultra-high-speed stacking technology; strengthening cell-level safety through short-blade cells; and providing fault warnings through real-time monitoring on the SVOLT cloud platform, etc. SVOLT has proposed a new generation of dragon scale battery solutions, which shows that SVOLT is not satisfied with the current achievements and continues to improve safety through technological innovation.

This time, Honeycomb Energy named the new generation solution "Dragon Scale Armor Battery", which means it is extremely strong and also means the culmination of all. "Dragon Scale Armor" is a legendary indestructible armor created by the dragon clan by collecting the hardest scales from every dragon. In the Dragon Scale Armor Battery Solution, we can see the collection of independent research and development achievements that Honeycomb Energy has been promoting since its establishment, such as the dagger battery and ultra-high-speed stacking process technology.

While achieving high safety, the endurance performance has also been significantly improved. In terms of energy density, Honeycomb Energy follows a systematic thinking from materials, battery cells to battery structure. By optimizing the two major technologies of battery cells and systems, higher energy density lithium iron phosphate batteries are used at the battery cell level; at the system level, it is designed through system structural component function integration and space function integration. Through technical optimization, the volume grouping efficiency of the Dragon Scale Armor battery system using lithium iron phosphate batteries has been greatly improved to 76%, with a range of more than 800 kilometers, more than 900 kilometers using high manganese iron nickel batteries, and more than 1,000 kilometers using ternary batteries, which can help vehicle manufacturers further expand the upper limit of driving range within a limited space.

[Dragon Scale Armor] The epitome of battery technology innovation

In addition to high safety and long battery life, Dragon Scale Armor batteries have multiple advantages.

The system has outstanding fast charging performance and supports 4C fast charging when matched with a ternary battery.

The difficulty in achieving fast charging of battery packs lies in how to manage the temperature rise of the battery caused by fast charging. If the temperature rise is too high and exceeds the safety threshold, it will cause thermal runaway. Previously, a large number of electric vehicles caught fire during fast charging due to insufficient thermal management capabilities.

The cost advantage is also obvious. The Dragon Scale Armor battery has reduced 20% of structural parts, reducing the weight of the battery pack by 10-20 kg. The reduction and weight reduction of these structural parts can not only directly reduce material costs, but also improve production efficiency and increase the vehicle's range.

This system can also be expanded to CTC (cells directly grouped to the body). The main difference between traditional battery packs and CTC is that traditional battery packs have their own set of structural parts, such as the upper cover, which coexists with the floor of the body and has similar functions. However, the battery pack of CTC shares some of its structural parts with the body, reducing materials and weight.

The system cover and water cooling plate of the Dragon Scale Armor battery can be integrated with the floor of the passenger compartment of the vehicle body, combining the three into one. This move will significantly improve the integration efficiency of electric vehicles, reduce costs, and improve assembly efficiency. This feature of the Dragon Scale Armor battery is similar to Tesla's 4680+CTC technology.

Dragon Scale Armor batteries also have strong compatibility, are compatible with various chemical systems, and can be installed in A00-C series vehicles. The ultimate compatibility shortens the development cycle of new models for vehicle manufacturers; the versatility of battery packs also further reduces procurement costs for vehicle manufacturers.

At the event, Yang Hongxin stated that Dragon Scale Armor Batteries are now accepting global pre-orders.

He also revealed that the Dragon Scale Armor battery will be gradually installed in mass-produced models in 2023, including an SUV to be mass-produced in October 2023 and a coupe to be mass-produced in October 2023.

Continue to innovate flying stack, high manganese iron nickel and nano-mesh silicon negative electrode...

On Battery Day, Honeycomb Energy also announced a number of major technological breakthroughs and corporate updates.