Nuvoton Releases Mass Manufacturing Launch of New Industrial BM-ICs

Nuvoton Know-how Company Japan (NTCJ) has developed new industrial 17-cell BM-ICs “KA49701A” and “KA49702A” for 48V batteries. Mass manufacturing begins from April 2025. These merchandise improve the security of battery programs and easy protected system building.

Achievements:

1. By incorporating fault prognosis and fail-safe features throughout the battery monitoring IC(BM-IC), it’s potential to construct a protected system with out exterior safety circuits. This contributes to improved security of the Battery Administration System (BMS) and lowered system prices.
2. Achieves industry-leading voltage measurement accuracy of +/-2.9mV, permitting most utilization of battery capability.
3. Reduces present consumption throughout operation, enabling lengthy battery drive instances. Moreover, by decreasing present consumption throughout shutdown, self-discharge is minimized, permitting for long-distance transportation and long-term storage of battery packs.

The enlargement of renewable vitality adoption and the event and enlargement of information facilities of generative AI are progressing. Vitality storage programs accountable for secure energy provide require bigger capability and better output batteries. Consequently, the shift from conventional lead-acid batteries to smaller, lighter, and better vitality density lithium-ion batteries (LIB) is accelerating. Nonetheless, LIBs are dearer than lead-acid batteries and require programs to forestall fires, resulting in elevated manufacturing prices.

To deal with this problem, we now have developed a “48V BM-IC for Industrial Gear ” outfitted with fault prognosis and fail-safe features, leveraging our automotive battery management expertise cultivated over a few years. This product achieves each enhanced battery system security and lowered system value for LIB-equipped storage programs. Moreover, with an industry-leading voltage measurement accuracy of +/-2.9mV and low energy consumption throughout each operation and shutdown (1/10 of our earlier merchandise), it maximizes battery capability utilization.

Options:

1. By integrating fault prognosis features and fail-safe features throughout the BM-IC, it’s potential to construct a protected system with out exterior safety circuits. This contributes to improved security of the BMS and lowered system prices.

The battery monitoring IC performs a task in guaranteeing the system operates safely throughout anomalies similar to overcharging or over-discharging of the battery. Nonetheless, if the primary circuits performing cell voltage measurements such because the AD converter or multiplexer of the BM-IC fail, it wants to make sure system security with exterior safety circuits, however this will increase board space and system value. The main inside circuits of this product are outfitted with diagnostic features and fail-safe features. This diagnostic operate can detect primary circuit failures and management·the cut-off swap, reaching each enhanced BMS security and lowered system value.

2. Reaching industry-leading voltage measurement accuracy of +/-2.9mV permits most utilization of battery capability.

By decreasing noise ranges on the 16-bit AD converter and incorporating a digital filter, we now have achieved industry-leading voltage measurement accuracy of +/-2.9mV. By bettering voltage measurement accuracy, most Battery capability can be utilized. Moreover, exact voltage measurement has been achieved over a large temperature vary. Additionally it is appropriate for purposes requiring excessive voltage measurement accuracy in cold and warm environments, similar to stationary battery programs compliant with the Chinese language nationwide commonplace.

3. Decreasing present consumption throughout operation realizes long-term Battery operation. Moreover, by decreasing present consumption throughout shutdown, self-discharge could be minimized, enabling long-distance transportation and long-term storage of battery packs.

By shortening the cell voltage measurement time, which has excessive energy consumption, working present has been achieved at 260μA, lower than 1/tenth of our earlier requirements. This allows lengthy battery drive instances. Additionally, optimization of the circuit design has lowered shutdown present consumption to 0.1μA or much less. Utilizing our IC, self-discharge could be minimized, stopping deterioration as a consequence of over-discharge when LIBs are transported over lengthy distances and saved long-term.

Purposes:

Battery programs (Vitality Storage System), backup unit for knowledge facilities,

Automated guided robots, electrical bicycles, drones, and so on.

Product identify:

BM-IC for industrial gear

KA49701A, KA49702A