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SamsungGranted patentBatteries & energyInterest 4/10

Samsung patents battery system that charges two packs in sequence

Samsung describes a battery system with two distinct packs: one optimized for fast charging and the other for high-power discharging. A processor controls the charger to fill the fast-charging pack first, then the high-power pack, using a standard two-step charging method.

Why it mattersThis approach could help devices manage power more efficiently by using the right battery type for the right task, potentially improving performance during heavy use.

In the filing’s own words

Provided is a battery system, including a first battery pack including a first battery cell, a second battery pack including a second battery cell, a charger, and at least one processor configured to control the charger to sequentially perform constant current (CC) charging on the second battery pack and the first battery pack based on input power being identified, and control the charger to sequentially perform constant voltage (CV) charging on the second battery pack and the first battery pack based on the CC charging of the second battery pack and the first battery pack being completed, wherein a discharging performance of the first battery pack is greater than a discharging performance of the second battery pack, and wherein a charging performance of the second battery pack is greater than a charging performance of the first battery pack.

What exactly they claim (claim 1)

1. A battery system, comprising: a first battery pack comprising a first battery cell; a second battery pack comprising a second battery cell; a charger; a first DC/DC converter, for a first load, connected to the first battery pack; and a second DC/DC converter, for a second load, connected to the second battery pack; a power supplier; a first switching element connected between the power supplier and the charger; a first resistance connected to a first terminal of the first DC/DC converter; a second switching element connected to the first resistance; a third switching element connected between the first terminal of the first DC/DC converter and the charger; a fourth switching element connected between a first terminal of the second DC/DC converter and the charger; a second resistance connected to a first terminal of the first switching element between the third switching element and the fourth switching element; a third resistance connected to the first terminal of the second DC/DC converter; and a fifth switching element connected to the third resistance; and at least one processor configured to: control the charger to sequentially perform constant current (CC) charging on the second battery pack and the first battery pack based on input power being identified; and control the charger to sequentially perform constant voltage (CV) charging on the second battery pack and the first battery pack based on the CC charging of the second battery pack and the first battery pack being completed, wherein a discharging performance of the first battery pack is greater than a discharging performance of the second battery pack, and wherein a charging performance of the second battery pack is greater than a charging performance of the first battery pack.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Battery system and controlling method thereof
Patent number
US12738751B2
Application number
19020216
Filed
Jan 14, 2025
Granted
Sep 15, 2026
Inventors
3
Claims
17

Classified under

H02J 7/585 Electricity & electronicsH01M 10/425 Electricity & electronicsH01M 10/441 Electricity & electronicsH01M 10/46 Electricity & electronicsH02J 7/80 Electricity & electronicsH02J 7/933 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.