Dear customer, thank you for choosing our product. We'd like to take this opportunity to explain a very important safety principle: our system uses multiple batteries connected in parallel. This is necessary not only for functional redundancy, but also for the safety and long-term stability of your home power supply.
As you may know, lithium batteries, despite their convenience, can pose certain safety risks if used improperly. One of the most dangerous situations is simultaneous charging and discharging.
Why is simultaneously charging and discharging a single battery so dangerous? Many batteries and electric vehicles have caught fire while charging.
Imagine that when you charge your phone from a power bank, the battery itself is also charging. For a single battery, this is like using the same road for cars entering and exiting.
The risk of short circuits increases significantly: the charge and discharge circuits within the battery significantly overlap. If a control circuit component (such as a MOSFET) fails or is damaged even for a millisecond, the charging and discharging currents can collide, causing an internal short circuit.
Thermal runaway and fire: Short circuits generate enormous, uncontrollable heat. Lithium batteries are particularly susceptible to overheating, which can lead to internal chemical decomposition, smoke formation, fire, and even explosion. This process, known as thermal runaway, occurs extremely quickly and is difficult to extinguish.
Load fluctuations lead to breakdowns: the power of electrical devices constantly fluctuates (for example, the power surge when starting an engine). These sudden fluctuations place a huge strain on the battery management system (BMS). For a single battery, the BMS must seamlessly handle both the input (charging) and output (discharging) currents, which increases the likelihood of failure.
Why are multiple battery solutions safer?
Our multiple battery design fundamentally eliminates these risks. This principle is similar to the "separation of people and vehicles" or "separation of inputs and outputs" in traffic management systems.
Physical isolation ensures fundamental safety: we use a design with separate charging and discharging ports. Simply put, one battery pack is dedicated to charging, and the other to discharging. The two packs work together thanks to the system's intelligence, but are physically separated.
The batteries are isolated within the circuits.
This is similar to building a "charging bridge" and an "underground tunnel" for discharging, ensuring that the charging and discharging currents take separate paths and never cross paths. This physically eliminates the risk of short circuits caused by overlapping charging and discharging circuits.
This clear separation of tasks extends battery life: the charging battery pack can focus on efficiently and smoothly drawing power, while the discharging battery pack can provide a stable and powerful output. This eliminates the need for multitasking, resulting in a more balanced load and significantly increasing battery life and reliability.
Redundant backup ensures uninterrupted power: when one battery runs low, the system seamlessly switches to a fully charged battery, ensuring uninterrupted operation of your devices. This not only provides power but also provides "double insurance" for safe operation. Summary:
Solution Safety, Risk, System Pressure, Lifetime Impact, Reliability
Charging and discharging a single battery through a single port: extremely high (short circuit, fire), significant (simultaneous handling of sharp charge and discharge fluctuations), significant losses, low (single point of failure, total destruction).
Charging and discharging multiple batteries through independent ports: extremely low (risk of physical isolation), seamless (each battery functions independently, load balancing), significantly increased, high (redundant design, seamless switching).
We understand that safety is the cornerstone of any experience. We would rather invest more in design and reduce cost than leave potential risks that could compromise your safety. Choosing a multi-battery architecture is not a compromise on technology; it is our unwavering commitment to safety and reliability.
We hope the above explanation helps you understand our design principles. Thank you for your trust and support. We are always available to answer any questions you may have.
Sincerely,
Leo Jim
CEO
MQ-Tech1.
📧 Email email: leojim@mqtech1.com
☎ Phone: +86 13575199203
📱 WhatsApp: +852 47435725