What is thermal runaway and how can it be addressed?

What is thermal runaway and how can it be addressed?

Thermal runaway is a significant risk present in batteries. It occurs due to a battery cell failure of some kind, occasionally as simple as the separator between the anode and the electrolyte breaking down. This generates an increase in temperature, creating a chain reaction in which more energy is released, causing the electrolyte to break down into flammable gasses. Once the separator melts, the cathode of the battery breaks down further fuelling the fire with oxygen, triggering an uncontrolled positive feedback loop, often leading to a destructive result. The risk of thermal runaway begins at 60°C and becomes extremely critical at 100°C. Once the process has begun, temperatures rise rapidly within milliseconds – creating temperatures of around 400°C. It is particularly prevalent in lithium-ion batteries.

Dielectrics and capacitors – what you need to know

Dielectrics and capacitors – what you need to know

Capacitors have an important role and function in a wide variety of applications. They are devices for storing electrical energy – preventing damage, information loss and filtering out unwanted frequencies. They are used in everything from microelectronic circuits to massive power systems.

An important feature of most capacitors is their dielectric component. Most capacitors have a dielectric spacer – a sheet of dielectric material between the two conducting plates, increasing its capacitance and improving the stability of the system.

Comparing 5 types of high temperature industrial insulation materials

Comparing 5 types of high temperature industrial insulation materials

High temperature insulation is vital in many manufacturing applications such as continuous processing, where operating temperatures should be controlled to achieve maximum efficiency and consistency, and foundry and steel, where effective thermal insulation can help to extend the life of equipment and provide additional safety measures.

What are the types of dielectric material?

What are the types of dielectric material?

When it comes to selecting the right insulation solution for an electrical application, it’s important to understand the dielectric capabilities and properties of the material or materials being used. 

A dielectric material is one which is a poor conductor of electricity, but can support electrostatic fields. This means that if the material is exposed to an external electric field, the substance becomes polarized. This allows it to store electric charge, making it a poor conductor, but a good storage medium. 

Mica insulation properties vs other common insulation materials

Mica insulation properties vs other common insulation materials

At Elmelin, we have been working with mica as our chosen insulation solution for over 100 years. For us, the benefits of using mica as an insulator are very clear. But obviously, it’s not the only material out there with thermal and electrical insulative properties that is widely used for industrial insulation applications.

With that in mind, we’re going to compare mica-based insulation with 3 other common insulation materials in order to give you a clear view of its performance against the alternatives.

3 things to consider about the resistance of insulation materials

3 things to consider about the resistance of insulation materials

Maintaining the right level of insulation resistance is vital in many industries which use machinery that operates at high voltages. A whole host of external factors can have an effect on the performance of insulation – general wear and tear, equipment damage, moisture, corrosive vapours, and of course – prolonged exposure to extremely high temperatures. From a design perspective, it’s very important that you understand the requirements of your high voltage application, the most important insulation material resistance of course being electrical resistance. However, in these applications, temperature and fire rating also have an important role to play.

What is muscovite mica and what is it used for?

What is muscovite mica and what is it used for?

As you’re no doubt aware – insulation can be made of a whole host of other materials – fibreglass, cellulose, mineral wool. That being said, mica has very unique properties that make it an excellent choice as a basis for insulation in a range of industrial applications.

Here we’re going to look at a particular form of mica – muscovite mica – its properties and how it’s used by the industry and by Elmelin to make a variety of processes safer and more efficient.

Elmelin at The Battery Show Europe 2020

Elmelin at The Battery Show Europe 2020

We are thrilled to announce that Elmelin will be exhibiting at the Battery Show Europe 2020 in Stuttgart, Germany from October 15-17, 2020.

Our capabilities and products are a fantastic fit for this sector, we have been involved in projects used in a range of battery applications. We’re particularly excited to be doing innovative work in the automotive industry, helping leading manufacturers devise safer solutions that protect those travelling in electric cars.