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MOLYKOTE M-77 Paste reduces noise in electric vehicle battery pack

MOLYKOTE M-77 Paste reduces noise in electric vehicle battery pack


The application

As the transportation industry electrifies and consumer demand for electric vehicles (EVs) grows, battery manufacturers are finding opportunities in meeting the needs of the expanding market. EV and battery manufacturers seek lighter weight, yet more compact, solutions to gain additional energy density and reduce cost. One immediate route to achieving these goals is eliminating the housings of battery modules and instead bonding individual cells directly to the cooling plate, a strategy known as “cell-to-pack.”

The challenge

A battery supplier for an automotive manufacturer in China was looking to solve an NVH concern and improve the end-user experience for electric vehicle drivers and passengers. The battery company had discovered that with the sudden change in temperature caused by starting the battery liquid cooling system, the screws that connect the cooling plate to the pack made noise – necessitating a lubricant solution that would deliver a quiet, comfortable ride.

Not only did the supplier need a solution that would address the NVH concern, but the lubricant also would need to provide adequate insulation properties to protect the components from the temperature changes.

The solution

The MOLYKOTE Specialty Lubricants team was confident it could provide a solution that would both reduce the noise and provide the thermal insulation properties demanded by the application. The team put MOLYKOTE M-77 Paste to the test against other lubricant technologies to see which one could best meet the electric vehicle battery manufacturer’s requirements.

During testing, the team discovered that while most of the technologies could meet some of the requirements, only silicone-based MOLYKOTE M-77 Paste, with its MoS2 solid lubricant, was able to both reduce the noise and meet the insulation needs.

Reduce NVH concerns and deliver key insulating properties

MOLYKOTE M-77 Paste can prevent noise and protect components across a wide range of temperatures. It is suitable for low to moderate loads and low speeds that are subjected to water and extreme temperatures. Suitable applications include battery packs, brake anchor plates, disc brake pistons, and other metal-to-metal frictional and contact surfaces.

MOLYKOTE M-77 Paste delivers:
  • Paste lubrication up to +230°C (+446°F); dry lubrication up to +400°C (+662°F)
  • Good water resistance
  • Good volatilization properties, leaving virtually no residue
  • Compatibility with many types of elastomers and plastics

We are your technical partner.
If you need technical support or want to find out more about the possibilities for your industrial application, please contact us and one of our experts will come back to you.

MOLYKOTE M-77 Paste reduces noise in electric vehicle battery pack

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