Charging Device Bypass Inverters for Quick Charge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In double-ended inverter systems, quick charging of vehicle storage batteries with external power supplies results in excessive heat generation and reduced charging efficiency due to high currents flowing through inverters and loads.
Innovation Solution
A charging device with a power supply circuit and relay configuration that allows current to bypass the inverters and load, improving charging efficiency and preventing heat generation by connecting storage batteries in parallel or series depending on charging standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If direct current power from external power supply is supplied to storage battery through inverter system, then charging function is achieved, but large heat is generated in inverters and load due to high current
Solution Approach 1:
The patent segments the charging path into two separate routes: a normal charging route through inverters for conventional charging, and a direct charging route through relays for quick charging. This segmentation allows high current to flow only through the direct route during quick charging, avoiding heat generation in inverters and load, while maintaining normal charging functionality through the inverter route.
Solution Approach 2:
The patent introduces relays as intermediary components that enable direct current flow from the external power supply to the storage battery, bypassing the inverter system. These relays act as mediators that switch between normal charging mode (through inverters) and quick charging mode (direct connection), allowing high current to pass without generating heat in the inverters and load.
2Loss of energy
If current flows through inverters and load during external charging, then power conversion and distribution is achieved, but charging efficiency is reduced
Solution Approach 1:
The patent implements dynamic switching between two charging modes using relays: normal charging mode where current flows through inverters and load, and direct charging mode where current bypasses these components. The system dynamically selects the appropriate mode based on charging requirements, enabling high-efficiency direct charging when needed while maintaining versatile charging options through the inverter system.
Data Source
AI summary
A charging device includes: a power supply circuit including a first inverter connected between a first storage battery and a load, and a second inverter connected between a second storage battery and the load, the power supply circuit being configured to drive the one load; a charging port configured to be connected to an external power supply when the first storage battery and the second storage battery are charged with power from the external power supply; and a relay configured to allow current to bypass the first inverter, the second inverter, and the load between a positive electrode terminal of the charging port and a negative electrode terminal of the charging port, when the first storage battery and the second storage battery are charged with the power from the external power supply.