Battery System
The battery system facilitates wireless communication between multiple BMSs through a simple configuration, reducing PCB size and cost, and enabling common design across frequency bands.
JP2025531989AActive Publication Date: 2025-09-29LG ENERGY SOLUTION LTD
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Patent Information
- Application Number
- JP2025510415
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-08-08
- Filing Date
- 2024-06-27
- Publication Date
- 2025-09-29
- Estimated Expiration
- 2044-06-27
AI Technical Summary
Technical Problem
Existing battery systems require additional components for wireless communication between multiple BMSs, leading to complex configurations and increased weight, which affects the driving range of electric vehicles.
Method used
A battery system design that enables wireless communication between multiple BMSs using a slave BMS with a capacitor, first and second inductors, and a control unit, allowing for antenna impedance matching without additional components, using a simple configuration.
Benefits of technology
Enables wireless communication and antenna impedance matching, reducing the size and cost of the PCB, and allowing for a common design across different frequency bands.
✦ Generated by Eureka AI based on patent content.
Abstract
The present invention relates to a battery system capable of wireless communication between a plurality of battery management systems (BMSs), and includes at least one battery module including a battery cell component and a slave BMS (Battery Management System) that manages the battery cell component. The battery system of the present invention includes a communication unit of the slave BMS, a capacitor connected between the communication unit and a first ground, a first inductor and a second inductor connected in series between a contact point of the first ground and the capacitor and a second ground, and a control unit that transmits an AC signal having a predetermined frequency to the communication unit in an antenna mode in which the slave BMS communicates with the outside, and the second inductor is configured with a wire so that a first antenna impedance determined by the first inductor matches a second antenna impedance of a master BMS with which communication is to be performed.
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