Battery Switching Circuit for Uninterrupted Load Voltage
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Solution Overview
Problem
Existing power supply devices for electric vehicles cannot operate loads during the switching of battery connections between parallel and series configurations, leading to voltage changes that disrupt load operations.
Innovation Solution
A power supply device with multiple switches and terminal connections allows for seamless switching between battery configurations without interrupting load operations by maintaining consistent voltage application to the load, using a configuration of first and second switches to manage battery connections and charger inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the connection of two batteries is switched between parallel and series configurations to achieve compatibility with various chargers, then the adaptability to different charging standards is improved, but the voltage applied to the load changes significantly causing load operation interruption
Solution Approach 1:
The patent segments the battery connection control into multiple independent switch units (first switch between cathode input terminal and first cathode-side battery terminal, second switch between cathode input terminal and connection point of first anode-side battery terminal, third switch between anode input terminal and connection point of first anode-side battery terminal, fourth switch between anode input terminal and second anode-side battery terminal). This segmentation allows granular control over battery connections, enabling the system to maintain stable voltage to the load while switching between series and parallel configurations to accommodate different charger standards.
2Ease of manufacture
If simple switching between battery connections is used to reduce device complexity, then the ease of manufacture is improved, but the ability to maintain stable voltage during switching is worsened
Solution Approach 1:
The patent introduces connection points as intermediary elements between the battery terminals and switches. The first connection point connects the cathode input terminal to the first anode-side battery terminal, and the second connection point connects the anode input terminal to the first anode-side battery terminal. These intermediaries enable smooth transitions between switching states without causing voltage fluctuations that would disrupt load operation, while maintaining a relatively simple overall structure.
Data Source
AI summary
It is provided a power supply device to connect a first anode-side battery terminal to a second cathode-side battery terminal, connect a first switch between a first cathode-side battery terminal and a cathode-side input terminal, connect a second switch between a first connection point, which is between the first anode-side battery terminal and the second cathode-side battery terminal, and the cathode-side input terminal, connect a third switch between a second connection point, which is between the first anode-side battery terminal and the second cathode-side battery terminal, and an anode-side input terminal, connect a fourth switch between a second anode-side battery terminal and an anode-side input terminal, connect the cathode-side output terminal to a line connecting the first switch and the first cathode-side battery terminal, and connect the anode-side output terminal to a line connecting the anode-side input terminal and the second anode-side battery terminal.