Battery Charging Circuit Resonance Frequency Control
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Solution Overview
Problem
Existing battery charging methods, such as those using dc pulse charging, face inaccuracies in determining resonance frequency and Q-factor, leading to potential battery damage and inefficiencies, especially for Lithium-ion batteries where fast-charging does not induce proton exchange, and traditional resonance measurement techniques are inadequate for determining the resonance frequency of batteries with adherent or soaked electrolytes.
Innovation Solution
The proposed solution involves using Digital Frequency Response Analysis (DFRA) to determine the resonance frequency of batteries, coupled with a preliminary pulse-based energy test to construct energy packet structures for soft-charging, and employing a Power Factor Control (PFC) circuitry to manage charging currents between 2.5C and 4C, ensuring efficient deep- and fast-charging while minimizing heat generation and oxidation risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional resonance measurement techniques are used to determine resonance frequency, then the charging process can be implemented, but the measurement precision is insufficient leading to inaccurate resonance frequency determination
Solution Approach 1:
The patent replaces traditional mechanical resonance measurement techniques with an electrical measurement system. A test signal is applied to the battery terminals and the voltage response is measured, allowing calculation of resonance frequency through electrical impedance analysis. This substitution enables precise non-contact measurement of the battery's resonant characteristics without physical manipulation.
Solution Approach 2:
The patent introduces a test signal as an intermediary to probe the battery's resonant characteristics. By applying a small amplitude test signal across a frequency range and measuring the voltage response, the system indirectly determines the resonance frequency through the battery's electrical response, avoiding direct mechanical measurement and achieving high precision.
2Productivity
If fast-charging current is applied to achieve high charging speed, then productivity increases, but heat generation and oxidation risks increase causing harmful effects
Solution Approach 1:
The patent employs periodic pulsed charging instead of continuous direct current. By applying current in pulses synchronized with or near the battery's resonance frequency, the system achieves efficient ion transport and rapid charging. The periodic nature of the pulses allows thermal management and prevents continuous heat accumulation, reducing oxidation risks while maintaining high charging productivity.
Solution Approach 2:
The patent utilizes electrical vibration at the battery's resonance frequency to enhance ion transport within the battery. By applying alternating current at frequencies matching the battery's natural resonant frequency, the system creates vibrational effects that accelerate ion movement between electrodes, enabling fast charging without excessive heat generation. This resonant excitation efficiently drives the charging process while minimizing harmful thermal effects.
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
This approach enables precise determination of resonance frequency, allowing for efficient conversion of electrical energy to chemical energy, extending battery service life by reducing oxidation and heat generation, and ensuring safe charging processes, particularly for batteries with adherent or soaked electrolytes.
Implementation Method 1
every single battery has got a specific resonance frequency that is characteristic of the battery itself... Said inductivity and virtual capacitance form a resonant circuit that can also be considered as an equivalent circuit diagram for the battery
Implementation Method 2
said molecular motion cannot be observed and instead a proton exchange takes place
Data Source
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AI summary
The inventive process and connection layout are designed for charging, especially deep- and fast-charging of batteries having adherent or soaked electrolyte on the basis of the Wronski effect. In the process according to the invention, charging of a preliminary tested battery is accomplished by a superposed alternating current that has a magnitude ranging from at least 2.5C to at most 4C. The resonance frequency of the battery is determined through a digital frequency response analysis by applying a white noise current pulse. The waveform of the superposed ac pulses is generated by a Power Factor Control circuitry that charges the resonant circuit of the battery through a power pulse modulator. The core feature of the connection layout according to the invention is that when charging is in progress, the control unit of the main circuitry sets the value of the resonance frequency fo of the battery to be charged with the accuracy of ±2% at every moment, wherein said resonance frequency is defined by a digital frequency response analysing circuitry.