The “satisfaction” of fast charging is something every energy storage user understands.However, over 70% of users still have concerns about fast charging:
Will high-power charging shorten the lifespan of energy storage batteries?
Are there any safety hazards associated with frequent fast charging?
What is the most reliable way to charge an energy storage system?
Today, we’ll take you into the microscopic world of batteries and explain the truth about “fast charging for energy storage” in one go.
Four "Microscopic Storms" Inside Batteries During Fast Charging
Fast charging essentially involves driving trillions of lithium ions to complete an extreme migration within a short period.
In energy storage systems, this high-rate operation also triggers a series of chain reactions
1. Negative electrode "traffic congestion" leads to lithium plating.
During fast charging, a large number of lithium ions rush to the negative electrode in a short period of time, accumulating on the surface and causing “congestion.”
Lithium ions that cannot be intercalated in time will deposit in place as metallic lithium.
👉 Direct consequence: Permanent reduction in usable battery capacity.
2. Lithium deposition leads to the rampant growth of lithium dendrites.
These deposited metallic lithium particles attract more lithium ions, continuously growing on the negative electrode surface and eventually forming sharp lithium dendrites.
👉 Direct consequences: This can potentially puncture the separator, causing an internal short circuit, and is the biggest source of safety hazards.
3. Damaged electrode materials reduce effective lithium sites.
Repeated high-rate impacts, like “cannonballs” bombarding the electrodes, cause the material structure to break and collapse.
👉 Direct consequence: Reduced effective lithium-ion insertion space, leading to further capacity degradation in the battery.
4. Global heating accelerates all aging reactions.
High current inevitably generates heat, and high temperature is a catalyst for battery aging.
👉 Direct consequences: Faster lithium plating, faster dendrite formation, easier material aging, and an overall accelerated shortening of battery life.
How we Solved the Fast Charging Challenge in Energy Storage?
To make energy storage batteries both fast and stable, we built a fast charging system by addressing five dimensions: materials, electrolyte, structure, thermal management, and algorithms.
1.Self-Healing Electrolyte:Real-time Dendrite Inhibition + SEI Film Repair
Our biomimetic self-healing electrolyte can:
1.Inhibit the initiation and propagation of lithium dendrites
2.Automatically repair micro-cracks in the SEI film
3.Reduce interface damage caused by fast charging
👉 Make the battery’s safety defenses more robust and fast charging more controllable
2. "Rigid-Flexible" Electrode Design: Enhanced Impact Resistance
High-Stability Positive Electrode Material:Through nanoscale coating technology, the positive electrode is “armored,”reducing the risk of structural cracking during fast charging.
High-Elasticity Porous Negative Electrode Structure:The negative electrode is more flexible, like a “sponge,”effectively buffering the volume changes caused by high-speed lithium-ion insertion.
👉 Electrodes are less prone to damage, resulting in longer fast charging life.
3.Super Cooling System: Ensuring Fast Charging Proceeds "Coolly"
Our pioneering dual-surface water-cooling structure,places the cooling plate between the battery cells, increasing the heat dissipation area by 4 times.Cooling efficiency improved by 50%.Significantly reduced risk of thermal runaway during fast charging.Combined with the BMS’s millisecond-level prediction algorithm,it dynamically adjusts the optimal charging current, ensuring a balance between speed, safety, and lifespan.
The last three "fast charging tips" are for energy storage users.
1. For regular use cases, prioritize slow charging.
For home energy storage or nighttime commercial/industrial energy storage replenishment where time is not an issue, use standard-rate slow charging whenever possible.
Reserve high-rate fast charging for special scenarios (such as emergency power replenishment or peak-valley arbitrage).
2. Fast charging doesn't need to be full.
At public fast charging stations or in high-power charging scenarios,charging to 80%–90% is sufficient.
This saves time and reduces material stress damage during the high SOC range.
3.Avoid "Extreme Stacking"
Fast charging is not recommended immediately under the following conditions:
After exposure to high temperatures and direct sunlight
Immediately after starting up in extremely cold environments
Immediately after experiencing high-rate discharge or high-power output
Letting the battery “breathe” will improve its performance.
Fast charging isn't an "either/or" choice, it's "all of it."
Our goal is to make fast charging safe, durable, and fast.
So that every energy storage user can enjoy fast charging with peace of mind, without worrying about reduced lifespan.
Finally, a question for you: Which group do you belong to when it comes to energy storage?
The “charge whenever you need it” group
The “must be fully charged” group
The “laissez-faire” group (does it depending on your mood)
Tell us in the comments!