Eliminating the 12V battery with use of Sine Amplitude Converter modules to create 12V power from the high voltage vehicle battery
2022-01-0823
03/29/2022
- Event
- Content
- The 12V lead-acid car battery is dead. Europe has decreed that no new cars will have lead-acid batteries after 2030, creating a considerable challenge for OEMs to find alternative solutions. Power modules leveraging Sine Amplitude Converter (SAC™) topology enable replacement of the 12V battery by directly converting power from the high voltage (400V or 800V) main vehicle battery. The primary battery (800v/400v) can directly power 12V loads only with high density DC-DC converter with a transient response that meets or exceeds the performance of a 12V battery. Power modules leveraging proprietary SAC topology far exceeds the slew rate—the transient response—of 12V lead-acid batteries in a much smaller and lighter system. A modular approach leveraging SAC can process millions of amperes per second from the high voltage battery to the load eliminating any dips or loads falling out of regulation. Bench testing shows that modular power can deliver a response three times faster than a typical 12V battery. This paper will detail the findings from bench testing comparing a modular approach using SAC to an Automotive lead-acid battery, Lithium-ion battery, and a super cap at 48VDC, 400VDC, and 800VDC with real data at room temperature, low temperature, and high temperature. The ampere-hour rating of the battery will be close to the SAC current rating. Testing will also be done with a much higher ampere-hour rating than the SAC current rating using identical leads, lengths, and similar terminations
- Citation
- Kowalyk, P., "Eliminating the 12V battery with use of Sine Amplitude Converter modules to create 12V power from the high voltage vehicle battery," SAE Technical Paper 2022-01-0823, 2022, .