Battery Pack Base Plate With External Mounting Part

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Solution Overview

Problem

Existing battery packs face challenges in easy assembly, structural stability, and mobility due to complex configurations and potential for short circuits and explosions from repetitive charge and discharge cycles, along with difficulties in extending capacity and increased manufacturing costs.

Innovation Solution

A battery pack structure featuring a module assembly with stacked battery modules, side plates, a base plate with fastening parts, and a sheathing cover, allowing for stable mounting and easy assembly, along with an external mounting part for enhanced mobility and a separated wiring system to prevent noise interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Power

If a plurality of battery cells is used to constitute a battery pack with multiple members for mechanical fastening and electrical connection, then the battery pack can provide required output and capacity, but the assembly process becomes very complicated and manufacturing cost increases

Engineering Contradiction:
Improveoutput and capacityVSAvoidassembly process complexity
Core Design Contradiction:
PowerVSDevice complexity

Solution Approach 1:

The patent combines multiple functions into a single integrated battery case structure that simultaneously provides mechanical fastening, electrical connection, and structural support. The battery case integrates bus bar functions and mounting structures, eliminating the need for separate members and simplifying the assembly process while maintaining required power output and capacity.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The battery case is designed as a multi-functional component that performs multiple roles: structural enclosure, electrical connection terminal, mechanical fastening element, and mounting interface. This universal design reduces the total number of components needed and simplifies manufacturing while achieving the required battery pack capacity.

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

2Power

If a plurality of battery cells is used to constitute a battery pack with multiple members, then the battery pack can provide required output and capacity, but the structure becomes difficult to modify for extension and manufacturing cost increases

Engineering Contradiction:
Improveoutput and capacityVSAvoidmanufacturing cost and modifiability
Core Design Contradiction:
PowerVSEase of manufacture

Solution Approach 1:

The patent employs a modular battery pack design where the battery case and internal components are segmented into standardized units that can be easily assembled, disassembled, and reconfigured. This segmentation enables simple extension of battery capacity by adding or removing modules without complex structural modifications, reducing manufacturing costs and improving flexibility.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The integrated battery case design serves multiple functions including structural support, electrical connection, and mounting interfaces, eliminating the need for separate components. This universal design simplifies manufacturing processes and enables easy modification for capacity extension through standardized interfaces.

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

3Power

If the battery pack is assembled using a plurality of components, then the battery pack can provide required output and capacity, but interference between components and wires, electric leakages, and short circuits may occur reducing structural stability

Engineering Contradiction:
Improveoutput and capacityVSAvoidstructural stability and safety
Core Design Contradiction:
PowerVSReliability

Solution Approach 1:

The patent merges electrical connection functions directly into the battery case structure, eliminating separate wiring and connection members that could cause interference, electric leakages, or short circuits. The integrated design reduces component count and potential failure points, improving structural stability and safety while maintaining required power output.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If the battery pack structure is simplified for easy assembly, then assembly process becomes easier, but structural stability and reliability may be compromised

Engineering Contradiction:
Improveassembly easeVSAvoidstructural stability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The integrated battery case combines structural support, electrical connection, and fastening functions into a single robust component. This merger simplifies assembly by reducing the number of parts to assemble while simultaneously enhancing structural stability through the unified design, preventing the reliability compromises that typically accompany simplification.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS10897033B2Battery pack for electric power storage device
Publication Date: 2021.01.19 LG ENERGY SOLUTION LTD
  • US10897033B2 patent drawing
  • US10897033B2 patent drawing
  • US10897033B2 patent drawing

AI summary

Disclosed herein is a battery pack configured to have a structure including at least one module assembly configured to have a structure in which battery modules, each of which has a structure in which a plurality of unit cells is stacked in a state in which unit cells are electrically connected to each other, are arranged such that the battery modules are adjacent to each other, a pair of side plates coupled to each other for covering opposite sides of the module assembly, a base plate having fastening parts, which are coupled to the side plates, formed at one surface thereof and an external mounting part, which is mounted to an external structure, formed at the other surface thereof, and a sheathing cover coupled to the base plate while covering the module assembly.