Universal Battery Charging Terminal with Conversion Unit

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Solution Overview

Problem

The inconvenience of requiring multiple charging devices for different types of battery packs, such as nickel-cadmium, nickel metal hydride, and lithium-ion batteries, due to their specific charging requirements, leading to increased size and complexity.

Innovation Solution

A single charging device with a conversion unit and dual charging terminals that can adapt to charge different types of battery packs by using a single power supply and switching mechanism, allowing for the connection of nickel-cadmium/nickel metal hydride and lithium-ion batteries.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If dedicated charging devices are used for each battery pack type, then charging reliability is ensured, but device complexity and quantity increase

Engineering Contradiction:
Improvecharging reliabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The charging device incorporates multiple charging terminals (first charging terminal for nickel-cadmium/nickel metal hydride batteries, second charging terminal for lithium-ion batteries) within a single device, enabling it to charge different battery pack types. The conversion unit switches between terminals based on battery type, providing universal charging functionality while maintaining reliability through dedicated charging circuits for each battery type.

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

2Adaptability or versatility

If multiple charging devices are used for different battery packs, then charging adaptability is improved, but device size increases

Engineering Contradiction:
Improvecharging adaptabilityVSAvoiddevice size
Core Design Contradiction:
Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The patent merges multiple charging functions into a single charging device by integrating first and second charging terminals, along with a conversion unit that switches between them. This consolidation allows the device to handle both nickel-cadmium/nickel metal hydride and lithium-ion batteries without requiring separate charging devices, thereby reducing overall device size while maintaining charging adaptability.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple charging devices are used for different battery packs, then charging versatility is improved, but quantity of devices increases

Engineering Contradiction:
Improvecharging versatilityVSAvoidquantity of devices
Core Design Contradiction:
Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The charging device achieves versatility by incorporating multiple charging terminals and a conversion unit that can switch between them. The first charging terminal serves nickel-cadmium and nickel metal hydride batteries, while the second terminal serves lithium-ion batteries. This multi-functional design eliminates the need for multiple separate charging devices, reducing the quantity of devices required while maintaining broad charging versatility.

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

4Volume of stationary object

If a single charging device charges different battery types, then device size is reduced, but charging precision may decrease

Engineering Contradiction:
Improvedevice sizeVSAvoidcharging precision
Core Design Contradiction:
Volume of stationary objectVSManufacturing precision

Solution Approach 1:

The charging device segments its charging function into distinct first and second charging terminals, each optimized for specific battery types. The conversion unit selectively connects the appropriate terminal based on battery type, ensuring that each battery receives charging through a dedicated terminal designed for its specific requirements. This segmentation maintains charging precision while enabling a compact single-device design.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentEP1826841B1Charging apparatus
Publication Date: 2019.10.09 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • EP1826841B1 patent drawingFigure 1
  • EP1826841B1 patent drawingFigure 2
  • EP1826841B1 patent drawingFigure 3

AI summary

A charging device for charging battery packs includes charging terminals including a first charging terminal to be connected to an electrode of a first battery pack and a second charging terminal to be connected to an electrode of a second battery pack. Here, the first and the second battery pack are different in kind. Further, the charging device includes a conversion unit for supplying electricity to the first charging terminal when the electrode of the first battery pack is connected to the first charging terminal and supplying electricity to the second charging terminal when the electrode of the second battery pack is connected to the second charging terminal.