Battery Module Bus Bar Shared Lead Slot Assembly

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Solution Overview

Problem

Conventional battery modules face inefficiencies in the assembly process due to the increased number of lead slots required for electrode leads, leading to narrowed intervals and higher probabilities of assembly failures.

Innovation Solution

A battery module design featuring a bus bar assembly with shared lead slots and pass guiders that allow adjacent electrode leads to pass through in common, reducing the number of lead slots and improving assembly efficiency by guiding leads to minimize misassembly risks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If the number of lead slots is increased to accommodate more electrode leads, then the battery module can connect more battery cells, but the intervals of lead slots are narrowed and assembly efficiency deteriorates

Engineering Contradiction:

Improvenumber of battery cellsVSAvoidassembly efficiency

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The patent merges the function of multiple lead slots into a single shared lead slot. Specifically, one lead slot is designed to accommodate electrode leads from multiple battery cells simultaneously, reducing the total number of lead slots required while maintaining the ability to connect multiple battery cells in series or parallel configurations

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The lead slot is designed with universal functionality to handle multiple electrode leads from different battery cells. The lead slot structure includes guide walls and positioning features that enable it to universally accommodate and properly position electrode leads from various battery cells, regardless of the specific connection configuration

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If the number of lead slots is increased, then more electrode leads can be connected, but the probability of assembly failure such as misassembling increases

Engineering Contradiction:

Improveconnection capabilityVSAvoidassembly accuracy

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The lead slot is pre-configured with guide walls, positioning features, and structural elements that automatically guide electrode leads into the correct position during assembly. This preliminary structural preparation ensures proper alignment and positioning before the actual connection is made, preventing misassembly

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The lead slot acts as an intermediary structure between the battery cells and the bus bar. It provides a controlled interface that mediates the connection process by guiding, positioning, and securing electrode leads, thereby ensuring accurate and reliable connections while reducing assembly failures

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11285821B2Battery module, battery pack comprising battery module, and vehicle comprising battery pack

Publication Date: 2022.03.29 LG ENERGY SOLUTION LTD

AI summary

A battery module includes a plurality of battery cells stacked on one another and respectively having electrode leads protruding on at least one side thereof and a bus bar assembly configured to electrically connect the electrode leads of the plurality of battery cells and having at least one lead slot through which electrode leads of two battery cells adjacent to each other pass in common.