Vehicle Charger Interface Layout for Compact Dual-Voltage Output

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Solution Overview

Problem

The existing vehicle-mounted charging apparatuses face challenges in optimizing the layout of electrical interfaces, leading to increased volume and costs due to the need for external mechanical interfaces for coolant flow, which complicates vehicle layout and assembly.

Innovation Solution

A vehicle-mounted charging apparatus with a centralized and highly integrated electrical interface layout, featuring an electrical interface mounting surface with an input power interface, two first direct current output interfaces, and a second direct current output interface, strategically spaced to avoid interference and facilitate efficient power distribution, while allowing for compact design and improved safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If multiple electrical interfaces are disposed on different sides of the vehicle-mounted charging apparatus, then each interface can be accessed independently, but the overall volume of the apparatus increases and space utilization decreases

Engineering Contradiction:
Improveinterface accessibilityVSAvoidapparatus volume
Core Design Contradiction:
Ease of operationVSVolume of moving object

Solution Approach 1:

The patent consolidates multiple electrical interfaces (input power interface, first direct current output interfaces, and second direct current output interface) onto a single electrical interface mounting surface. This merging of interfaces that were traditionally distributed across different sides of the apparatus reduces the overall volume and improves space utilization while maintaining all necessary connection capabilities.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent transitions from a three-dimensional distribution of interfaces across different sides of the apparatus to a two-dimensional arrangement on a single mounting surface. This dimensional change allows all interfaces to be accessed from one location rather than requiring access from multiple sides, effectively reducing the apparatus volume footprint.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Stability of the object's composition

If electrical interfaces are distributed across multiple surfaces, then spatial separation is achieved, but assembly complexity increases and costs rise

Engineering Contradiction:
Improvespatial separationVSAvoidassembly complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges multiple electrical interfaces onto a single electrical interface mounting surface, which simplifies the assembly process by reducing the number of separate mounting operations required. This consolidation maintains proper spatial separation through careful layout design while significantly reducing assembly complexity and associated costs.

Inventive Principle:
Principle #5Merging (Combining)

3Temperature

If mechanical interfaces for coolant flow are disposed outside the charging apparatus, then cooling function is provided, but the available space for electrical interfaces is limited

Engineering Contradiction:
Improvecooling functionVSAvoidinterface mounting area
Core Design Contradiction:
TemperatureVSArea of stationary object

Solution Approach 1:

The patent utilizes the electrical interface mounting surface more efficiently by arranging multiple electrical interfaces in a compact two-dimensional layout. This optimized spatial arrangement maximizes the use of available mounting area, providing sufficient space for all electrical interfaces while maintaining proper clearance for separate coolant flow paths.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP4378744A1Vehicle-mounted charging apparatus and vehicle
Publication Date: 2024.06.05 HUAWEI DIGITAL POWER TECH CO LTD
  • EP4378744A1 patent drawingFigure 1~2
  • EP4378744A1 patent drawingFigure 3a
  • EP4378744A1 patent drawingFigure 3b~4

AI summary

This application provides a vehicle-mounted charging apparatus and a vehicle. The vehicle-mounted charging apparatus includes a power conversion circuit and a housing. The housing is configured to accommodate the power conversion circuit. The power conversion circuit is configured to convert an input power supply into at least one of a first direct current or a second direct current. A voltage of the first direct current is lower than a voltage of the second direct current. A plurality of electrical interfaces are disposed on an electrical interface mounting surface in the housing. The plurality of electrical interfaces include one input power interface, two first direct current output interfaces, and one second direct current output interface. The input power interface is configured to be connected to an input end of the power conversion circuit. The first direct current output interface is configured to receive the first direct current and supply power to a first-type load. The second direct current output interface is configured to receive the second direct current and supply power to a second-type load. In this application, the plurality of electrical interfaces are disposed on a same surface, so that the external interfaces are appropriately arranged and highly integrated. This facilitates a vehicle layout, improves assembly simplicity, and reduces costs.