Interchangeable Circuit Substrates for Dynamic Battery Voltage
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Solution Overview
Problem
Existing battery packs for electric vehicles and hybrid electric vehicles have fixed output configurations, making it difficult to adapt to changes in load requirements, such as varying voltage demands, and often incur power loss when using DC-DC converters for voltage adjustments.
Innovation Solution
A battery pack design featuring interchangeable substrates with distinct circuits for connecting battery cells in series or parallel configurations, allowing for dynamic output voltage adjustments without power loss, using elastic protrusions for secure terminal connections and a transport medium for substrate movement and attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the battery pack uses a fixed connection status of battery cells, then the structure is simple and reliable, but the output voltage cannot be adjusted to match different load requirements
Solution Approach 1:
The battery pack is divided into multiple battery cell groups (first group, second group, third group) that can be independently connected through different circuits. Each circuit (first circuit, second circuit, third circuit) provides a specific connection configuration, allowing the system to segment and reconfigure battery cells according to different output voltage requirements without redesigning the entire structure.
Solution Approach 2:
The battery pack incorporates multiple circuits (first, second, and third circuits) that can each serve different connection purposes. These circuits are universally applicable to the same battery cell groups, enabling the system to achieve multiple output voltage configurations using the same physical components, thereby improving adaptability without proportionally increasing complexity.
2Adaptability or versatility
If a DC-DC converter is used to change the output voltage, then the output can be adjusted, but power loss occurs and it is difficult to use in high current applications
Solution Approach 1:
The patent replaces the electronic DC-DC converter with a direct mechanical/electrical reconfiguration system. Instead of using power electronic conversion that inherently causes losses, the system physically reconfigures the battery cell connections through switches and circuits to achieve different output voltages directly from the battery architecture, eliminating conversion losses and enabling high current applications.
3Power
If the battery pack is designed for high current output, then it can meet electric vehicle requirements, but it becomes difficult to use voltage adjustment without power loss
Solution Approach 1:
The battery pack incorporates dynamic reconfiguration capability through multiple circuits that can be selectively activated. The system can dynamically switch between different connection configurations (series, parallel, or combinations) based on real-time load requirements, allowing high current output when needed while maintaining voltage adjustment flexibility through direct electrical reconfiguration rather than power conversion.
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
Enables flexible output voltage adjustments to match different load requirements, increasing the battery pack's versatility and reducing power loss, allowing for efficient high current applications without the need for DC-DC converters.
Implementation Method 1
The plurality of fixed protrusions may be formed of an elastic material, the fixed protrusions elastically pressurizing the respective positive electrode terminals or negative electrode terminals
Data Source
AI summary
A battery pack including a plurality of battery cells, the battery cells including positive electrode terminals and negative electrode terminals; and a first substrate and a second substrate, the first substrate and second substrate being selectively coupleable to the positive electrode terminals and the negative electrode terminals of the plurality of battery cells, wherein the first substrate includes a first circuit for connecting the positive electrode terminals and the negative electrode terminals to connect the plurality of battery cells together in a first manner, and the second substrate includes a second circuit for electrically connecting the plurality of battery cells in a second manner different from the first manner.