Why Do Lithium Batteries for Electronic Blood Pressure Monitors Need to Be Stored Before Packaging and Shipment?

As a medical auxiliary device for accurately monitoring human health, electronic blood pressure monitors have extremely high requirements for the stability, safety and consistency of lithium batteries, their core power source. Many people wonder why lithium batteries cannot be directly packaged and shipped after production, but need to be stored for a period of time. In fact, this static storage link is not redundant, but a key process to ensure product quality and avoid use risks. It is backed by in-depth considerations for the stable performance of lithium batteries, and fully centered on the accurate power supply needs of electronic blood pressure monitors.

The core purpose of static storage is to stabilize the internal electrochemical system of lithium batteries. During the production of lithium batteries, an initial SEI film is formed after the formation process. This film is crucial to battery life and safety, but its structure is loose and unstable when just formed. Through storage for a period of time, the SEI film can complete “aging” repair and transform into a denser and more stable structure, effectively preventing the continuous decomposition of electrolyte, ensuring the long-term stability of the battery, and avoiding voltage fluctuations during the monitoring of electronic blood pressure monitors, which may affect measurement accuracy.

Secondly, the storage process can screen out unqualified products and ensure shipment quality. It is inevitable that problems such as pole piece burrs and diaphragm defects will occur during production. These hidden dangers may lead to internal micro-short circuits or abnormal self-discharge of the battery, which are difficult to detect only by conventional testing. During storage, by monitoring the battery voltage drop (K value), unqualified batteries with excessive self-discharge and micro-short circuits can be accurately identified and eliminated, preventing problematic batteries from entering the market and avoiding sudden power outages, measurement failures and other situations of electronic blood pressure monitors.

In addition, static storage can balance the internal state of the battery and improve consistency. Lithium batteries for electronic blood pressure monitors are mostly produced in batches, and there may be slight differences in voltage and capacity between individual batteries. The storage process allows the electrolyte to fully infiltrate the pole pieces and release internal stress, making the performance of each battery tend to be uniform. This can ensure that when multiple batteries are used in combination, the discharge is uniform and the endurance is consistent, avoiding the impact on the overall service life and user experience of the electronic blood pressure monitor due to the performance deviation of a single battery.

In summary, the static storage of lithium batteries for electronic blood pressure monitors is a necessary link to stabilize electrochemical performance, screen out unqualified products and improve performance consistency. Although it seems to increase the production cycle, it is actually a strict control of product quality, and more importantly, a responsibility to users’ health monitoring needs. It lays a solid power foundation for the accurate and stable operation of electronic blood pressure monitors, and is also an indispensable key quality control step in lithium battery production.