Battery monitoring device, integrated circuit, and battery monitoring system
The battery monitoring device measures AC impedance of batteries independently of charge or discharge states using a separate resistor and integrated circuit, ensuring accurate health assessment and safety monitoring.
JP2025147177APending Publication Date: 2025-10-06NUVOTON TECH CORP JAPAN
Patent Information
- Application Number
- JP2025131264
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2018-06-27
- Filing Date
- 2025-08-06
- Publication Date
- 2025-10-06
Smart Images
Figure 2025147177000001_ABST
Abstract
To provide a battery monitoring device that can measure the AC impedance of a battery regardless of whether the battery is being charged or discharged.SOLUTION: A battery monitoring device 100 comprises: a first reference resistance 103 that is arranged on a path P2 other than a path P1 for a current flowing from a battery to a load 102; a transistor 104 for causing current to flow from the battery to the first reference resistance 103; a current measuring unit 112 that measures a first current flowing in the first reference resistance 103; a voltage measuring unit 115 that measures the voltage of the battery B; and a first calculation unit 118 that calculates the AC impedance of the battery on the basis of the measured first current and the measured first voltage.SELECTED DRAWING: Figure 1
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Citation Information
Patent Citations
Cash memory control system
JP1979003437A