Danish new energy BMS battery

What is a battery management system (BMS)?

In general, BESS includes the energy storage in battery cells, their encasing, and the auxiliary systems e.g., electrical cables, power conversion, monitoring, and control systems. Monitoring and control systems comprise the basic functionalities of battery management system (BMS), which among other, controls the safety of BESS.

Does Denmark have a standard for lithium-ion battery fire and explosion testing?

Denmark also lacks specific protocols for Lithium-ion battery fire and explosion testing, e.g., UL 9540A, which is a benchmark test recommended in many other countries. Danish guidelines may furthermore provide more clarification on when and which suppression systems should be installed, depending on BESS design parameters.

What is Bess & how does it work in Denmark?

Additionally, the document presents two case studies that illustrate the use of current guidelines in Denmark. BESS are used for storing energy generated from a renewable energy source (e.g., solar or wind power) and non-renewable sources.

Should repurposed and refurbished batteries be used in Bess?

Overall, there are very few guidelines on the use of repurposed and refurbished batteries in BESS. The Netherlands and USA are the only countries that discuss the topic. Germany underlines the need of risk assessment due to a higher failure probability. Guidance on use of repurposed and refurbished batteries should be provided.

Are lithium-ion batteries a viable option for energy storage and balancing grids?

Aside from presenting a viable opportunity for energy storage or balancing electrical grids, BESS present significant fire and explosion risks, due to employment of Lithium-ion batteries (LIB), which are susceptible to thermal runaway (TR).

Are Bess batteries safe?

Despite the growth of use cases and applications, BESS still poses safety concerns related to fire and explosion hazards. In the event of a thermal runaway, LIB batteries within BESS can release flammable and toxic gases which can lead to fires or/and explosions.