Toyota Charging System and Method for Secondary Battery

ChangeBridge: Patent Apps - Power Supply (H02J)

Detected March 26th, 2026

Summary

The USPTO has published a patent application from Toyota Jidosha Kabushiki Kaisha for a charging system and method for secondary batteries. The application details a system using a magnetic current sensor to monitor battery current and adjust charging parameters, particularly in response to detected ripple.

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What changed

This document is a published patent application (US20260088648A1) from Toyota Jidosha Kabushiki Kaisha concerning a charging system and method for secondary batteries. The core innovation involves using a magnetic current sensor to measure current flow and a control apparatus that adjusts the chargeable current value based on detected current ripple exceeding a predetermined threshold. This aims to optimize the charging process for secondary batteries.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on other entities. However, it represents a technological development in battery charging systems that may influence future industry standards or product designs. Companies involved in battery manufacturing or electric vehicle technology may wish to review this application for competitive intelligence and potential licensing opportunities.

Source document (simplified)

← USPTO Patent Applications

CHARGING SYSTEM AND CHARGING METHOD FOR SECONDARY BATTERY

Application US20260088648A1 Kind: A1 Mar 26, 2026

Assignee

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventors

Yoshiki TSUCHIDA

Abstract

A charging system for a secondary battery includes: a current sensor that measures a current flowing in the secondary battery; and a control apparatus that, during charging of the secondary battery, refers to a measurement value of the current sensor and performs charging control of the secondary battery. The current sensor includes a magnetic current sensor. The charging control includes setting of a chargeable current value that is allowed during the charging of the secondary battery. When a ripple is detected from the measurement value of the magnetic current sensor and a current value of the detected ripple is not less than a predetermined current value, the chargeable current value is set using the current value of the detected ripple.