Development of R2R direct Gravure coater and Laminating system

for Pouch battery of Electric vehicle applications

[CEO. Dong Soo, Kim]

CONTENTS

1 Market

2 Problem

3 Product

4 Technology

5 Process

6 Properties

※ APPENDIX

Electric vehicle Explosion

1

• Explosion of Tesla electric car with Panasonic’s Cylindrical lithium battery

• Fire & Personal injury, “Driver death”

2018. 03 Car crash occurred in California, USA → The driver died due to Explosion & Fire

I. Market

Ref. 모터 그래프

Vehicle Model Battery Manufacturer Cause

Tesla electric vehicle Model X Panasonic (Cylindrical battery) Battery Overheating & Distortion

Pouch type battery Predominance

2

• Pouch type battery advantage due to “High energy efficiency & Light & Design freedom etc.”

• Polymer electrolyte → No electrolyte leakage & No explosion, Improved Safety

• LG Chem, a maker of pouch-type battery, forecasts Electric car battery Sales to be at least “8 trillion won” in 2020

I. Market

Ref. 모터 그래프

Capacity : 35GWh in 2018 → 90GWh projected in 2020

Ref. 전자신문 2018.07.24

※ Battery types and Models for electric vehicle

Battery

typeCharacteristic

Battery

manufacturer

Car

maker

Pouch

High energy

efficiency

Light weight

Safety

Design freedom

LG Chem.

SK Innovation

AESC etc.

HYUNDAI/KIA

Volkswagen

GM, Ford, Volvo,

NISSAN etc.

Prismatic

Affordable cost

Durability

Massive production

Samsung SDI

TOSHIBA

SANYO

PEVE etc.

BMW

Audi

TOYOTA

Volkswagen etc.

Cylindrical

Panasonic

SANYO

LG Chem.

Samsung SDI

etc.

Tesla

* Includes Small/Medium and Large battery Ref. Industry gathering

Li-battery Industry Market

3

• Expanded from Mobile/IT devices to Electric vehicles and ESS, Increased Demand

• Expanded Supply of electric vehicles : Promote electric car Support policy and Production around the world

I. Market

Ref. 모터 그래프

Secondary Battery Market for Electric vehicles [Amout]

＄15.7 billion in 2016 ▶ ＄67.6 billion in 2020 (331% ↑)

Lithium Battery Global Market Outlook

Li-Polymer Battery Industry Market

4

• Li-Polymer Battery Growth with High energy density & Low explosion hazard

(15 trillion won in 2020 → 32 trillion won in 2030)

• Increased demand for Exterior material of Li-polymer battery, “Growing together”

• Pouch film (※ Exterior material) – Monopoly of Japanese companies & High dependence on imports

(Occupy more than 80% of the industry market → “Localization Essential”)

I. Market

Ref. 모터 그래프

Pouch Film Market Outlook Cost per Pouch type battery material Market Share by Manufacturer

*Ref: 당사자료, SNE리서치 *Ref: 당사자료*Ref: SNE리서치(2013)

Risk & Low efficiency of lithium battery

5

• Risk – Cylindrical and Prismatic batteries, Possibility of Explosion due to Electrolyte leakage

• High efficiency – Electric vehicle, Require High efficiency & High capacity Battery

Pouch Battery, Improved Safety & High Energy Density (※ Polymer electrolyte and Light & Thin)

II.Problem

Ref. 모터 그래프

Battery type

Cylindrical & Prismatic Pouch

Advantages · Easy of Supply, Durability· Safety, High efficiency· High Design Freedom & Space utilization

Problems· Explosion, Secondary damage such as Fire· Product weight· Low space utilization “Reduced efficiency”

· High Production unit Price

* Ref. Google Image

Limitations of Extrusion lamination

6

• Manufacturing Method of Pouch film – Extrusion lamination & Dry lamination

• Limits of Extrusion lamination – Thin film coating Difficulty & Materials/Time Loss

• Impossible of coating thickness Less than 10㎛, Operation yield approx. 80%

II.Problem

Extrusion lamination Dry lamination

장 점· Mass Production (Processing speed Max. 600m/min)

· Excellent Chemical resistance

단 점

· Materials/Time Loss → Increased manufacturing cost

· Coating thickness Limit (＞10㎛)

· Low yield (Loss by Edge Bead)

· Thin film coating (＜10㎛)

· Continuous Production, Uniform Operation→ Improve yield (approx. 90%)

· Simple Process → Reduced manufacturing cost

· Need to Aging Process (Temp.50℃, 3days)→ Adhesion formation

· Low Chemical resistance→ Edge Bead : Melt resin Clustering

Pouch film for Li-Polymer battery

7

• Development of Exterior material for pouch type battery

• Pouch Film – Exterior material of Li-Polymer battery & Composite film composed of Metal and Polymer films

• Function – Battery cell Protection & Battery safety & Reliability

III.Product

Nylon

Al foil

CPP

Cross section of Pouch film (x500)

Li-Polymer Battery and Pouch film Structure

Product Specifications

8

III.Product

[Structure of Pouch film]

Application Field

9

III.Product

Small Battery(Mobile IT device)

Medium & Large Battery

(EV, ESS)

Li-polymer Battery

Electric vehicleMobile / IT devices

Roll-to-Roll Dry lamination

10

• Development of Roll to Roll Dry lamination

Direct Gravure Coater with Excellent Repeatability

Continuous Production method → Increased Productivity & Reduced manufacturing Costs

Thin film Coating of 2~5㎛ & Yield over 90%

Ⅳ.Technology

Roll to Roll Dry lamination Equipment and Schematic

START

Process technology using Gravure Coater

11

• Direct Gravure Coater

Concave Printing method

∙ After filling the Concave part of Gravure cylinder with ink, Printing with pressure by Back-up Roller

Excellent Coating Uniformity

∙ Not influenced by external variables such as Pressure change applied to the roll

Thin film Coating – from Nanometer(㎚) to Micrometer(㎛)

“Coating + Speed/Tension + Dry/Lamination Control = Stable Production“

Ⅳ.Technology

Partial Control System of Dry lamination

12

Ⅳ.Technology

Dry lamination Parts and Systems

Dancer & Web guide Gravure coater Hot Air Dryer Laminater

• Torque : 0 ~ 300N

• Speed : ~ 600m/min

• Control : CPC[Center Line Guide]

• Tension control &Film centering & Anti-shake

• Speed : 300mm/s

• Pressure : 0 ~ 50kg

• Coating Thickness :Control as Roll dyne [㎚~㎛]

• Dryer Length : 6m

Total 6zones – Stable drying

• Temperature : ~ 150℃

• Speed : 300mm/s

• Pressure : 0 ~ 200kgRoller Height & Pressurecontrol

• Temperature : ~ 200℃

• Joint R&D of “Adhesive and Surface treatment agent” → Improved Durability & Reliability

Material technology

13

Collaboration with manufacturers

“Polyolefin Adhesive & Cr3+/Polymer Surface treatment agent”

Ⅳ.Technology

Surface treatment

agent

Al foil : Polarity , Adhesive : Non-polar

Different properties, Low bond strengthApplication of Surface treatment agent

Increases adhesion between Film and AdhesiveImproved Adhesive strength

Aluminum foil

Adhesive

CPP film CPP film

Adhesive

Aluminum foil

Optimization of Materials

14

• Low Chemical resistance compared to Extrusion lamination

→ Joint R&D with manufacturer (※ Surface treatment agent & Adhesive)

• Optimization of Materials → “Ensure Product Reliability” (※ Adhesive strength & Electrolyte resistance etc.)

Ⅳ.Technology

Value Chain

Materials Manufacturer

Nylon film

Al foil

CPP film

Surface treatment

1st Adhesive

2nd Adhesive

Manufacture Process

15

V.Process

Adhesive

1st Adhesive (NY/Al) 2nd Adhesive (Al/CPP)

Polyurethane Polyolefin

Aging condition

1st Aging (NY/Al) 2nd Aging (Al/CPP)

50℃ × 4days [5days]

Properties Test

16

• Properties test for Reliability & Quality of the Pouch film

• Ensure Product Quality → Adhesive Strength, Electrolyte resistance, Formability and Heat seal strength etc.

VI.Property

Test equipment and method Adhesive Strength Electrolyte resistance

Adhesive strength by Dry tem. Of Surface treatment agent

Adhesive strength by Process conditions of Adhesive

Electrolyte resistance by Process conditions of Adhesive

• Dry temperature at 100℃ :

Excellent Adhesive strength

• Less than 80℃ :

Insufficient drying, Poor bonding

• Adhesive Dry temperature at 80℃ : Excellent Adhesive strength & Electrolyte resistance

• Above 100℃ dry temp. : Adhesive strength Decreases due to adhesive hardening

• Good Property in the best working Speed : 18m/min

Properties Test

17

VI.Property

Formability Heat seal strength

Seal bar

Formability by Adhesive coating thickness Heat seal strength by conditions

CoatingThick. 5㎛ Forming depth6mm CoatingThick. 7㎛ Forming depth6mm

• Adhesive Coating Thickness : Affects Formability

• Increased coating thickness,

Reduced flexibility of adhesive & Reduced formability

• Heat sealing Temperature 180℃ & Time 3sec

Excellent Heat seal strength

• Excessive temp. & time : CPP film thermal deformation

Optimization of Process & Properties

18

• Process Optimization

• Comparison of Properties with Competitors Self-assessed measurement

VI.Property

Properties Unit TOPnC Competitor (日)

Thickness ㎛ 153 153

Adhesive Strength N/15mm 23.5 18.5

(1) Electrolyte Resistance N/15mm 10.3 11.3

(2) Forming Depth mm 6.0 5.5

(3) Heat Sealing Strength N/15mm 156.0 128.8

⦁ (1) Electrolyte resistance : immerse it into electrolyte (EC:DEC:DMC=1:1:1, LiPF6 1M) at 85℃ , after 24hr⦁ (2) Forming size : 4 cm x 5 cm / Pouch size : 14 cm x 17 cm⦁ (3) Heat Sealing strength : Sealing temp. 180℃ / Pressure 40kgf / Time 3sec

CoatingLaminating

Surface treatment agent Adhesive

Thickness Speed Dry temp. Thickness Speed Dry temp. Pressure Speed Temp.

< 1㎛ 6m/min 100℃ 3~6㎛ 18m/min 80℃ 130kg 18m/minAl/NY 60℃

Al/CPP 100℃

Customer Verification Test

19

• Tested by the Customer for Product & Technical verification → All Passed

Test report

No Properties Spec Result

3 Thickness 153±3 ㎛ 154

5 Formability ≥ 4.7mm 4.7

7Heat seal strength

≥ 50N 135.6

10Electrolyteresistance

> 34.5N 94.8

11Adhesivestrength

≥ 3N 6.6

Domestic Car Maker Test report [2018.09]

VI.Property

Customer Verification Test History

CustomerChina (Battery, Automobile, Energy companies) Domestic car

makerA R K Q G C J

Model No. TCMP 153 TCMP 113 TCMP 153 TCMP 113 TCMP 113 TCMP 113 TCMP 113 TCMP 153

Date 2017. 08 2017. 08 2018. 07 2018. 08 2018. 08 2018. 08 2019. 01 2018. 09

Result PASS PASS PASS PASS PASS PASS PASS PASS

China Battery Company(K) Test report [2018.07]

※ TCMP113 for Mobile/IT , TCMP153 for Electric vehicle

APPENDIX

Company Overview

20

VII. Team

Shareholders Number of shares Equity ratio(%)

Technical holding of Hanbat Univ. 33,600 21.5

CEO. Kim 122,572 78.5

Total 156,172 100.0

Company

CEO

Establishment

Product

Capital

Address

TOPnC Co.,LTD.

Dong Soo, Kim

2014. 08. 07

Secondary battery Pouch, Functional film, R2R equipment, 3D Printing

8.62 billion won

125, Dongseo-daero, Yuseong-gu, Daejeon, Republic of Korea

Shareholders

URL www.topnc.co.kr

Intellectual Properties

21

• Patents and Technology for Pouch film & Equipment

VII. Team

Company CertificationPatents

Application Registration

• Recognition of Company affiliated research institute

• SME Certification (※ SME : Small and Medium Enterprises)

• Venture Business Certification

• Industry-University Cooperation Agreement

17 27

• Patent Application & Registration for “Product & Manufacturing

technology & Equipment & Evaluation equipment”

THANK YOU