Dielectric-Elastic Compressing Plate for Consistent Battery Terminal Contact

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Solution Overview

Problem

Existing secondary battery charging and discharging devices face challenges in ensuring consistent contact pressure and area with electrode leads, leading to increased resistance, potential overheating, and unreliable battery evaluation due to varying work conditions and equipment configurations.

Innovation Solution

A terminal contacting part with a dielectric-resilient compressing plate and a clamp-style pressing unit, featuring a pad made from materials like silicon rubber with a melting point above 100°C, ensures consistent contact pressure and area with electrode leads, minimizing resistance and preventing overheating.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a rotation manner pressing unit is used to compress the electrode terminal, then the pressing operation can be performed, but the contact pressure and contact area become inconsistent leading to increased resistance

Engineering Contradiction:

Improvepressing operationVSAvoidcontact pressure consistency

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The pressing unit is inverted from a rotation manner to a linear moving manner. The pressing rod moves linearly up and down along the pressing direction rather than rotating, which directly compresses the electrode terminal between the compressing plate and anvil. This inversion eliminates the inconsistent contact pressure and contact area issues caused by rotational movement, ensuring reliable and consistent electrical connection.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The pressing unit changes the motion parameter from rotational to linear movement. The pressing rod moves linearly along the pressing direction with controlled displacement, transforming the pressing mechanism from indirect rotational compression to direct linear compression. This parameter change ensures uniform contact pressure and consistent contact area between the electrode terminal and conductive unit.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If varying work conditions and equipment configurations are used, then the charging and discharging process can be performed, but the contact pressure and area vary leading to unreliable battery evaluation

Engineering Contradiction:

Improvework condition flexibilityVSAvoidbattery evaluation reliability

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

The pressing unit is designed with self-adjusting features where the linearly moving pressing rod automatically maintains consistent contact pressure through its controlled linear motion. The mechanism inherently compensates for variations in work conditions and equipment configurations, ensuring that the electrode terminal is always compressed with uniform pressure and contact area without requiring external adjustment or calibration.

Inventive Principle:

Principle #25Self-service

3Productivity

If inconsistent contact pressure is applied to the electrode lead, then the charging and discharging can proceed, but resistance increases and overheating occurs

Engineering Contradiction:

Improvecharging and discharging operationVSAvoidresistance and overheating

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The pressing mechanism is inverted from rotational to linear motion, ensuring that the compressing plate applies uniform contact pressure directly to the electrode terminal. This direct linear compression eliminates gaps and inconsistent contact areas that cause increased resistance and overheating, allowing safe and efficient charging and discharging operations.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The motion parameter of the pressing unit is changed from rotational to linear movement, enabling precise control of contact pressure. The linearly moving pressing rod maintains consistent compression force on the electrode terminal, preventing resistance increase and overheating while ensuring smooth charging and discharging operations.

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution provides stable and reliable battery performance evaluation by maintaining consistent contact pressure and area, reducing resistance, and preventing damage from overheating, regardless of work conditions or current levels.

Implementation Method 1

a compressing plate which is included in the pressing unit and is in contact tightly with the electrode terminal and is provided with a pad of dielectric-resilient body

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

a conductive unit for contacting an electrode terminal and conducting thereto

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentUS9040857B2Terminal contacting part included in a jig for charging and discharging a secondary battery and the jig including the same

Publication Date: 2015.05.26 LG ENERGY SOLUTION LTD

AI summary

A terminal contacting part includes in a jig for charging and discharging a secondary battery and a jig including the terminal contacting part. The terminal contacting part has a conductive unit for contacting an electrode terminal and conducting thereto and a pressing unit for pressing the electrode terminal for the conductive unit to be in tight contact with an electrode lead of a secondary battery. A compressing plate to be in contact with an electrode terminal includes a pad of dielectric-elastic material.