Charging Device Noise Removal Stabilizes Battery Output
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Solution Overview
Problem
Conventional vehicle-mounted charging apparatuses do not effectively remove noise components between the charger and the battery, leading to unstable output due to mixing of L- and C-components from the battery and wiring, resulting in noise contamination on the output side.
Innovation Solution
A charging apparatus with a noise removal section that includes Y-capacitors connected in parallel to the input and output paths, specifically between the charger and the storage battery, to remove noise components and stabilize the output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a Y-capacitor is inserted into the AC input circuit to remove noise from external power source, then noise from external power source is removed, but noise components between charger and battery are not removed
Solution Approach 1:
The noise removal function is divided into two separate sections: a first noise removal section for the AC input circuit and a second noise removal section for the charging power output circuit. Each section independently handles noise from different sources, ensuring comprehensive noise removal while maintaining output stability.
Solution Approach 2:
A second noise removal section acts as an intermediary between the charging section and the storage battery. This intermediate component specifically targets and removes noise generated between the charger and battery, preventing noise contamination while maintaining stable power delivery.
2Device complexity
If no noise removal section is provided between charger and battery, then device complexity is reduced, but noise components mix into output side causing unstable output
Solution Approach 1:
The charging apparatus is segmented into distinct functional sections with dedicated noise removal capabilities. The second noise removal section is specifically positioned between the charging section and storage battery to handle output-side noise, providing targeted noise removal without requiring complete system redesign.
Solution Approach 2:
Noise removal capability is applied locally at the specific location where noise problems occur. The second noise removal section is strategically placed in the output circuit to address noise between charger and battery, providing precise noise removal where needed while maintaining overall system simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively stabilizes the output of the charging apparatus by removing noise components, even when the system is in an electrically floating state, preventing noise contamination and ensuring a stable power supply to the storage battery.
Implementation Method 1
a noise removal section that removes a noise component included in the charging power to be supplied to the storage battery by the charging section
Implementation Method 2
Y-capacitors connected in parallel to the input and output paths, specifically between the charger and the storage battery, to remove noise components
Data Source
AI summary
The purpose of the invention is to stabilize the output of a charging device by removing noise components back to the output side of the charging device. The charging device (100) charges a secondary battery (30) by using power supplied from an external power supply (20). A charging unit (102) has a primary coil (150) and a secondary coil (151), converts the power supplied from the external power supply (20) into a charging power, and supplies the charging power to the secondary battery (30). A noise removing unit (103) removes noise components included in the charging power that is supplied to the secondary battery (30) by the charging unit (102).