Battery Pack Charger Patent Application US20260088642A1

ChangeBridge: Patent Apps - Power Supply (H02J)

Published September 23rd, 2025

Detected March 26th, 2026

Summary

The USPTO has published a new patent application, US20260088642A1, detailing a battery pack charger. The application, filed on September 23, 2025, describes a charger incorporating an LLC converter and a PFC boost converter with inrush current control.

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What changed

This document is a publication of a patent application (US20260088642A1) filed with the USPTO on September 23, 2025. It details a novel battery pack charger design featuring an LLC converter, a power factor correction (PFC) boost converter, and an input inrush current control circuit. The inventors listed are Vivek S. Nagal, Xuechao Wang, and Paul C. Chao.

This publication does not impose any new regulatory obligations or compliance requirements on manufacturers. It serves as a notification of a pending patent application and provides technical details of the proposed invention. Companies involved in the design or manufacturing of battery chargers may wish to review this application for potential intellectual property considerations or competitive insights.

Source document (simplified)

← USPTO Patent Applications

BATTERY PACK CHARGER

Application US20260088642A1 Kind: A1 Mar 26, 2026

Inventors

Vivek S. Nagal, Xuechao Wang, Paul C. Chao

Abstract

A battery pack charger may include a housing. The battery pack charger may include a battery pack interface provided on the housing and configured to removably receive a battery pack. The battery pack charger may include a power input. The battery pack charger may include an LLC converter including a dual transformer electrically connected between the power input and the battery pack interface. The battery pack charger may include a power factor correction (PFC) boost converter electrically connected between the power input and the battery pack interface. The battery pack charger may include an input inrush current control circuit electrically connected between the PFC boost converter and the battery pack interface.