Modular High-Voltage Battery Circuits for Lower-Cost Charging
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Solution Overview
Problem
The increasing power demand of energy storage apparatuses leads to higher costs for high-power charging mechanisms, resulting in elevated usage costs for energy storage systems.
Innovation Solution
The energy storage apparatus is designed with at least two mutually insulated input-output terminals and independent high-voltage circuits, allowing for flexible connection of high-voltage circuits in series or parallel, and includes insulated busbar assemblies and offset busbar plates to reduce the risk of short circuits and simplify the structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-power charging mechanisms are used to meet increasing power demand of energy storage apparatuses, then power demand is satisfied, but usage costs increase
Solution Approach 1:
The energy storage apparatus is divided into multiple independent high-voltage circuits (first high-voltage circuit, second high-voltage circuit, etc.), each capable of independent charging and discharging. This segmentation allows the system to distribute power demand across multiple circuits rather than requiring a single high-power charging mechanism, thereby reducing the power rating and cost of individual charging devices while meeting overall power requirements.
2Adaptability or versatility
If multiple independent high-voltage circuits are configured, then power demand flexibility improves, but device complexity increases
Solution Approach 1:
Each high-voltage circuit is designed with universal functionality to perform both charging and discharging operations independently. The circuits use standardized components and configurations that can be interconnected in series or parallel to meet different power demands, reducing the need for specialized circuit designs and simplifying overall system complexity despite having multiple circuits.
Solution Approach 2:
Multiple high-voltage circuits are merged through series or parallel connections to achieve different power output configurations. The first and second high-voltage circuits can be connected in series to increase voltage output or in parallel to increase current output, providing flexible power adaptation while using a modular approach that reduces design complexity compared to custom high-power circuits.
3Volume of moving object
If busbar plates are positioned close together to reduce space, then compactness improves, but short circuit risk increases
Solution Approach 1:
An insulating separator is introduced as an intermediary component positioned between the first and second high-voltage circuits. This separator includes insulating structures that physically isolate the busbar plates of different circuits, preventing direct contact and potential short circuits while maintaining compact overall dimensions. The insulating separator acts as a mediator that enables close positioning without compromising safety.
Solution Approach 2:
The busbar plates of the first and second high-voltage circuits are arranged in an asymmetric offset configuration rather than symmetric alignment. This asymmetric positioning, combined with the insulating separator, creates non-uniform spacing that reduces the risk of short circuits while optimizing space utilization. The offset arrangement ensures that even if one circuit experiences expansion or movement, the asymmetric design provides built-in clearance margins.
Data Source
AI summary
An energy storage apparatus and an energy storage system, where the energy storage apparatus includes a box, at least two mutually insulated input-output terminals, and at least two mutually independent high-voltage circuits; and each high-voltage circuit includes at least one battery, a plurality of batteries are accommodated in the box, and the high-voltage circuits are electrically connected to the input-output terminals in a one-to-one correspondence.