High-Voltage Box Power Layout With Daisy-Chain Supply Wiring

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Solution Overview

Problem

The complexity of power distribution lines and wiring in energy storage systems is increased due to the integration of multiple battery clusters and high-voltage boxes, leading to a cumbersome wiring arrangement and inefficient use of space within the energy storage container.

Innovation Solution

A high-voltage box power supply system where a single power supply is connected to multiple high-voltage boxes in a daisy chain arrangement, utilizing first and second power supply interfaces on each box to facilitate power distribution, and incorporating switching power supplies and breakers to manage voltage and ensure safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple power supplies are used to connect to multiple high-voltage boxes, then each high-voltage box can be independently powered, but the number of connection cables and wiring complexity increases

Engineering Contradiction:
Improveindependent power supply reliabilityVSAvoidwiring complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple power supply functions into a single power supply unit that can serve multiple high-voltage boxes through a daisy-chain connection architecture. The first power supply is electrically connected to the first high-voltage box, and subsequent high-voltage boxes are connected in sequence, consolidating what would otherwise require multiple separate power supply units and their associated wiring harnesses.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single power supply is designed with multi-functionality to serve multiple high-voltage boxes through standardized power supply interfaces. Each high-voltage box contains a power supply interface that can accept power from the same power supply unit, allowing one power supply to perform the function of multiple power supplies while reducing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple power supply interfaces are provided in the power distribution cabinet, then each high-voltage box can be independently connected, but the volume of the power distribution cabinet increases

Engineering Contradiction:
Improveconnection flexibilityVSAvoidpower distribution cabinet volume
Core Design Contradiction:
Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The patent reduces the number of power supply interfaces in the power distribution cabinet from multiple separate interfaces to a single interface that connects to the first power supply. This consolidation merges what would otherwise require multiple discrete connection points, thereby reducing the overall volume required for the power distribution cabinet while maintaining the ability to serve multiple high-voltage boxes through the daisy-chain architecture.

Inventive Principle:
Principle #5Merging (Combining)

3Reliability

If a traditional one-to-one power supply connection is used, then each high-voltage box has dedicated power supply, but the number of connection cables increases

Engineering Contradiction:
Improvededicated power supply reliabilityVSAvoidnumber of connection cables
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple separate power supply connections into a single power supply unit that distributes power to multiple high-voltage boxes through a shared electrical connection. Instead of having one cable per power supply-box pair, the system uses one power supply with multiple output interfaces, significantly reducing the total number of connection cables required in the system.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The single power supply is designed with multi-functionality to provide dedicated power connections to multiple high-voltage boxes through its multiple power supply interfaces. Each interface can independently connect to a high-voltage box, allowing the single power supply to perform the function of multiple dedicated power supplies while using fewer cables overall.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4712302A1High-voltage box power supply system and energy storage system
Publication Date: 2026.03.18 EVE ENERGY STORAGE CO LTD
  • EP4712302A1 patent drawingFigure 1~3
  • EP4712302A1 patent drawingFigure 4~5
  • EP4712302A1 patent drawing

AI summary

The present disclosure provides a high-voltage box power supply system and an energy storage system, where the high-voltage box power supply system is applied to the energy storage system and includes: a power supply; and a plurality of high-voltage boxes; where the power supply is electrically connected to one of the plurality of high-voltage boxes, and the plurality of high-voltage boxes are electrically connected to each other in sequence, so that the power supply supplies power to the plurality of high-voltage boxes.