TPS65070: Li-SOCL2 battery - Power management forum

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My client has been utilizing the TPS for powering their current device. This device either works with a Li-Ion battery (or Li-Pol) or via USB connection.

They now face a new challenge: powering the TPS with a Li-SOCL2 battery, for instance, the SAFT LS model, which has a voltage rating of 3.6V. They have disabled the charging feature in the device, as it is meant to operate solely on battery.

The issue arises where the TPS seldom initiates properly when supplied by the Li-SOCL2 battery. It seems that the maximum current needed at start-up may exceed the 15 mA limit. Another possibility is an issue with the internal logic of the TPS. The specification sheet indicates that starting the device at 3.6V is feasible.

Interestingly, if the device is first powered by USB, it operates smoothly when switched to battery power.

Can the Li-SOCL2 battery be used with the TPS? Are there any schematic solutions available for this power supply configuration?

Thank you!

Daria

Benefits of Lithium Thionyl Chloride Batteries

As the world explores the potential of lithium as a sustainable energy source, the rising interest in lithium thionyl chloride batteries presents a unique opportunity to explore their various benefits.

Lithium batteries are not a recent invention; they have been utilized for years across electronics, portable power tools, and various battery-operated toys.

Over time, we have broadened our lithium battery repertoire, specifically focusing on types such as lithium thionyl chloride, which are predominantly designed for industrial use.

So, what exactly are these batteries, and how can they be advantageous to you?

Understanding Lithium Thionyl Chloride Batteries

Lithium thionyl chloride, or Li-SOCl2, refers to primary cell batteries. In this type, the electrolyte is based on sulfonated thionyl chloride, which functions as the positive electrode.

The principal distinction between this battery type and others lies in its inability to be recharged once depleted.

These batteries can be manufactured through two primary methods, each offering unique benefits depending on the construction style.

One method is the spiral-wound design, while the other involves a bobbin-type configuration.

The bobbin-type Li-SOCl2 batteries are particularly noteworthy for the advantages they offer.

For further insights, please refer to SUNJ ENERGY.

These batteries can also be combined with hybrid layer capacitors to create higher periodic pulses, enhancing two-way wireless communication capabilities.

Applications of Lithium Thionyl Chloride Batteries

Thanks to their excellent durability and distinctive features, these batteries find extensive use in industrial battery-powered devices, the aerospace sector, the automotive industry, varied types of meters, IIoT gadgets, and even medical equipment such as defibrillators.

The ability of the battery to withstand temperatures as high as 125 degrees Celsius allows for efficient sterilization processes, which is particularly vital in medical applications.

Conversely, their capability to operate effectively at low temperatures, down to -80 degrees Celsius, makes them suitable for use in devices monitoring the transportation of donor organs and similar purposes.

Modern emergency locator transmitters (ELTs) in aviation are increasingly utilizing Li-SOCl2 batteries due to their lightweight design and performance in extreme cold.

These batteries exhibit tremendous longevity and efficiency, making them prevalent across numerous industrial applications.

Lithium Thionyl Chloride

Advantages of Lithium Thionyl Chloride Batteries

The key advantage of lithium thionyl chloride batteries is their higher voltage compared to other lithium types. While typical lithium batteries range from 1.5 to 3 volts, Li-SOCl2 batteries boast a nominal voltage of 3.6V, which is consistently maintained throughout their lifespan—the result of their exceptional chemistry.

This battery type also excels in energy density, achieving up to 730 watt-hours per kilogram. Their sustainability is another critical factor, as they can operate in both extremely low and high temperatures, enhancing their versatility.

Additionally, Li-SOCl2 batteries are frequently utilized in metering devices, including timers and toll systems. One remarkable benefit from a specific chemical process these batteries undergo is their durability, with an astonishing self-discharge rate of only 1% per year.

Given their wide applicability, these lithium thionyl chloride batteries are available in various shapes and sizes. Regardless of choice, the essential qualities—high voltage and robust durability—remain consistent.

Furthermore, these batteries recover quickly after long storage periods and incorporate non-flammable electrolytes, essential for safety in certain environments. Their long life span also facilitates use as backup batteries for low-consumption appliances.

Amid the ongoing discussions surrounding sustainable energy solutions, it’s notable that lithium thionyl chloride batteries are recyclable and eco-friendly, with lower toxicity upon disposal compared to many alternatives.

Some cons of lithium thionyl chloride batteries include higher internal resistance and potential delays in achieving high voltages. However, Tadiran Batteries offers integrated capacitors with their products to provide peak current when needed. Given the numerous advantages, we are confident that these batteries will meet your needs.

If you want to connect with our battery experts for personalized solutions, please complete the contact form below.

Frequently Asked Questions (FAQ)

How long are lithium thionyl chloride batteries expected to last?

With a low self-discharge rate of 1-2% annually, these batteries typically last 10 to 20 years, depending on the application's specific load profile. Tadiran produces ultra-long-life batteries with a minimal self-discharge rate of 0.7%, achieving a remarkable lifespan of up to 40 years.

Are lithium thionyl chloride batteries safe to use?

These batteries contain toxic and corrosive liquid thionyl chloride, which can harm skin and eyes on contact. However, proper handling and disposal practices minimize any hazards.

If you're interested in high power li socl2 battery, please don't hesitate to reach out to us.