from chemistry to pack
The 2024 Porsche 911 T-Hybrid battery pack is interesting as this is a high power HEV pack using 21700 cylindrical cells. In the image you can see the battery pack is quite small and sits over the front axle (top right-hand side of the image). Using the Battery Calculations Workbook it is possible to enter … Read more
The Toyota Bipolar NiMh hybrid pack was introduced in the Aqua in July 2021. This pack is smaller and lighter than the monopolar NiMh pack that has been used in variations across models and platforms. In this innovative battery, a cathode is applied to one side of a metal component called a current collector and … Read more
Previouly we have looked at the fundamental differences between the power and energy cells, but why is there a Power versus Energy Cell Cost difference? Typically, energy cells cost ~80-100 $/kWh in 2024 and power cells ~150-300 $/kWh. Although, there are some exotic power cells that cost ~$600/kWh. Let’s think about the factors that make … Read more
A high level definition of the hybrid system type. The pros and cons and a look at the battery. The mechanical output could be to the wheels of a vehicle, the propeller of a boat or aircraft. The requirements for each system will influence the sizing of the system and the balance between battery storage … Read more
As a battery design goes, the Toyota Prius Gen 2 Battery is rather inspirational, if just because of the number made. However, the modules are very neat in construction, it is air-cooled with waste cabin air and has been tested with a 159,000 miles on the clock with a SoH of >82%. This is an … Read more