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IEST Lab-sclae Automatic Coin Cell Assembly Machine(CAAS1000)

IEST Lab-sclae Automatic Coin Cell Assembly Machine(CAAS)

Compact Automatic Coin Cell Assembly Machine for Single-Station Gloveboxes

Next-Gen Coin Cell Assembly Machine For Lab-scale

产品规格卡片 | IEST
The Lab-scale Automated Coin Cell Assembly Machine (Compact Version) is a compact, single-station glovebox-compatible system built for high-precision, high-consistency assembly of lithium-ion, sodium-ion, and solid-state coin cells in battery R&D laboratories. It integrates automatic electrolyte injection, CCD vision positioning, and automatic sealing to reduce manual assembly errors and improve batch-to-batch consistency. The CAAS1000 assembles up to 10 coin cells per batch at approximately 2 minutes per cell, and supports CR2032, CR2025, and CR2016 formats — making it well suited for universities and research institutes that need reliable, small-batch coin cell assembly for material screening and electrochemical evaluation.
1–10 ea Customizable Throughput
±0.4 mm Assembly Concentricity
60 min/ea Assembly Speed
3-in-1 Inject · Seal · Inspect
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The Significance of Coin Cell Assembly

文字描述卡片 | 左侧蓝线样式
In the preliminary stages of lithium battery R&D for novel materials and fabrication processes, coin cells serve as essential platforms for fundamental electrochemical validation. The precision in cell assembly directly impacts the reliability of performance metrics (e.g., capacity retention, cycle stability) and determines the bench-scale feasibility of materials for commercial applications.

System Features

  • Compact Design Integrates modules such as automatic electrolyte injection, automatic sealing, and a CCD vision system, etc.
  • Comprehensive Functionality Dimensions are engineered to perfectly fit single-workstation standard glovebox specifications.
  • High-speed Assembly Approximately 2 mins/cell
  • High-Throughput Assembly Up to 10 coin cells per batch, flexibly adapting to different needs.
  • Flexible Configuration Supports various common coin cell models such as CR2032, CR2025, CR2016, etc.
  • Wide range of cell types Capable of rapidly assembling half-cells, full-cells, and symmetric cells.
CR2032 CR2025 CR2016

Flexible Multi-Format Coin Cell Assembly

The CAAS1000 accommodates the three most common coin cell diameters used in lithium and sodium-ion battery R&D through interchangeable sealing molds, material trays, and fixtures. This allows a single lab-scale system to support multiple project workflows without purchasing separate equipment for each cell format. Switching between different heights within the CR20 series requires no complex reconfiguration, providing maximum adaptability for university and research laboratories.

产品特性卡片 - 居中版
High-speed automatic coin cell assembly module achieving 2 mins/cell cycle time for lab-scale battery testing

Rapid Assembly

Approx 2 mins/ cell

High-precision robotic arm achieving ±0.4mm coin cell assembly concentricity for accurate electrode and separator stacking

High-Precision Assembly

Concentricity ±0.4mm

Multi-material vacuum suction cups preventing cross-contamination and electrode damage during automated component pick-and-place

Multi Material Suction Cups

Prevent contamination

CCD vision positioning system providing visual inspection and full-process traceability logging for battery coin cell assembly

Process Traceability

(Optional) Material surface detection

Multi-station batch assembly tray supporting 1 to 10 coin cells per batch with customizable lab-scale throughput

High-throughput Assembly

Up to 10 cells/ batch

Automatic coin cell sealing module featuring 2-ton hydraulic crimping pressure and ±0.05% pressure monitoring accuracy

Automatic Sealing Module

Precise auto sealing

Automatic electrolyte injection module with ±1μL precision, 0-200μL adjustable injection volume, supporting max 24 electrolyte channels

Automatic Liquid Injection

Max 24 electrolytes

CAAS software interface recording sealing pressure, liquid injection volume, and visual alignment data for battery R&D

Data Processing Software

Process recording

Equipment Expansion​

方案 B - 左图右 Tab 切换 | IEST
Equipment
High-Throughput Automatic Electrolyte Switching System
  • Equipment Features: Can interface with an automatic electrolyte formulation platform. Enables automatic switching between 100 different electrolyte recipes, supports continuous assembly of 400 battery cells.
  • Application Scenario: Suitable for coin cell assembly for electrolyte formulation verification and high-throughput battery assembly.
Liquid Injection Module
  • High-precision liquid injection with accuracy of ±1 μL. Injection volume continuously adjustable from 0 to 200 μL.
  • Injection tips automatically switched to prevent cross-contamination of electrolytes.
  • Automatic electrolyte transfer & short-term storage. Single transfer: 25 bottles (60 mL/bottle). Max capacity: 200 bottles.

1. Case 1: Manual Assembly VS Auto Assembly

Assembly Comparison Manual Assembly Automatic Assembly
Item Charge
capacity
(mAh/g)		 Discharge
capacity
(mAh/g)		 Efficiency
(%)		 Charge
capacity
(mAh/g)		 Discharge
capacity
(mAh/g)		 Efficiency
(%)
NCM-1 Range value 1.1 1.3 0.22% 0.7 0.7 0.26%
Average 225.525 211.142 93.62% 225.325 211.05 93.66%
σ 0.384 0.396 0.001 0.226 0.198 0.001
COV 0.17% 0.19% 0.07% 0.10% 0.09% 0.08%
NCM-2 Range value 1.8 2 0.23% 0.6 0.9 0.23%
Average 225.467 211.7833 93.93% 225.292 211.6083 93.93%
σ 0.44 0.465 0.001 0.178 0.231 0.001
COV 0.20% 0.22% 0.07% 0.08% 0.11% 0.07%
Assembly Comparison Manual Assembly Automatic Assembly
Item Charge
capacity
(mAh/g)		 Discharge
capacity
(mAh/g)		 Efficiency
(%)		 Charge
capacity
(mAh/g)		 Discharge
capacity
(mAh/g)		 Efficiency
(%)
Silicon
base-1		 Range value 20.6 12.6 0.55% 17 16.8 0.25%
Average 1908.4 2046.9083 93.24% 1907.592 2044.9083 93.28%
σ 6.948 4.391 0.002 4.553 4.678 0.001
COV 0.36% 0.21% 0.18% 0.24% 0.23% 0.07%
Silicon
base-2		 Range value 39.7 22.4 1.46% 19.9 22.2 0.38%
Average 1897.85 2039.7833 93.02% 1903.992 2041.5667 93.26%
σ 11.669 6.954 0.005 5.211 6.322 0.001
COV 0.61% 0.34% 0.49% 0.27% 0.31% 0.11%
IEST-Automatic-Coin-Cell-Assembly-System-CAAS-Details-12
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For NCM materials:
The range of charge/discharge specific capacity for NCM with automatic assembly is 0.6~0.9 mAh/g (σ ≈ 0.25), while with manual assembly it is 1~2 mAh/g (σ ≈ 0.4).

For Silicon-based anode materials:
The range of charge/discharge specific capacity for Si-based materials​ with automatic assembly is 15~20 mAh/g (σ ≈ 4~6), while with manual assembly it is 20~40 mAh/g (σ ≈ 5~10).
文字描述卡片 | 左侧蓝线样式
Conclusion: While the average specific capacity values obtained from automated and manual assembly methods were comparable for both material types, automated assembly demonstrated superior stability compared to manual assembly.

2. Case 2: Automatic Coin Cell Assembly of LFP Cathodes

Category Item Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7
Range Charge capacity (mAh/g) 1.5 1.1 1.2 1.1 1 0.6 0.4
Discharge capacity (mAh/g) 1.3 1.2 1 1.3 0.9 0.6 0.5
Coulombic Effi (%) 0.8 0.4 0.3 1.3 0.4 0.5 0.6
Average Charge capacity (mAh/g) 161 160.7 160.7 161.3 161.1 161.1 161.1
Discharge capacity (mAh/g) 156.9 156.7 156.6 157 156.9 156.9 156.9
Coulombic Effi (%) 97.4 97.5 97.5 97.4 97.4 97.4 97.4
σ Charge capacity (mAh/g) 0.37 0.32 0.33 0.38 0.24 0.2 0.12
Discharge capacity (mAh/g) 0.31 0.36 0.29 0.3 0.25 0.16 0.12
Coulombic Effi (%) 0.18 0.12 0.09 0.3 0.11 0.12 0.12
COV Charge capacity (mAh/g) 0.23% 0.20% 0.21% 0.24% 0.15% 0.12% 0.10%
Discharge capacity (mAh/g) 0.20% 0.23% 0.18% 0.19% 0.16% 0.10% 0.10%
Coulombic Effi (%) 0.18% 0.12% 0.09% 0.31% 0.11% 0.12% 0.12%
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Conclusion:
The standard deviation (σ) for the discharge specific capacity in each group is less than 0.8, and for the charge specific capacity, it is less than 0.5.
The range for the discharge specific capacity in each group is less than 2.1 mAh/g, and for the charge specific capacity, it is less than 1.5 mAh/g.
The coefficient of variation (COV) for both charge and discharge specific capacity in each group is less than 0.2%.

3. Case 3: Automatic Coin Cell Assembly of Graphite Anodes

Category Item Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7
Range Charge capacity (mAh/g) 1.1 1.2 1.1 1.2 1.3 1.2 1.5
Discharge capacity (mAh/g) 1.8 1.8 1.8 1.9 2.1 2.1 2.1
Coulombic Effi (%) 0.4 0.5 0.5 0.4 0.5 0.7 0.6
Average Charge capacity (mAh/g) 347.9 347.8 347.7 347.3 345.4 346.2 346.1
Discharge capacity (mAh/g) 367.8 368.4 368.2 368.2 367.7 368.2 368.8
Coulombic Effi (%) 94.6 94.4 94.4 94.3 93.9 94 93.8
σ Charge capacity (mAh/g) 0.28 0.38 0.31 0.34 0.45 0.35 0.44
Discharge capacity (mAh/g) 0.57 0.62 0.6 0.53 0.51 0.65 0.69
Coulombic Effi (%) 0.13 0.15 0.14 0.13 0.13 0.17 0.15
COV Charge capacity (mAh/g) 0.08% 0.11% 0.09% 0.10% 0.13% 0.10% 0.13%
Discharge capacity (mAh/g) 0.16% 0.17% 0.16% 0.14% 0.14% 0.18% 0.19%
Coulombic Effi (%) 0.14% 0.16% 0.15% 0.13% 0.14% 0.18% 0.16%
IEST-Automatic-Coin-Cell-Assembly-SystemCAAS-Details-20
Conclusion:
The standard deviation (σ) for the discharge specific capacity in each group is less than 0.8, and for the charge specific capacity, it is less than 0.5.
The range for the discharge specific capacity in each group is less than 2.1 mAh/g, and for the charge specific capacity, it is less than 1.5 mAh/g.
The coefficient of variation (COV) for both charge and discharge specific capacity in each group is less than 0.2%.

4. Case 4: Curling Issue of Single-Sided Electrodes after Calendering and Punching

IEST-Automatic-Coin-Cell-Assembly-SystemCAAS-Details-21
Conclusion:
Our specially designed suction cup can ensure that the curled electrodes are sucked evenly and flatly.
Our visual positioning system can avoid the placement position deviation caused by the curling of the electrodes.
The positive electrode shell is pressed down horizontally to flatten the curled electrode that contacts the electrolyte.

Model CAAS1000
Assembly Concentricity ±0.4mm
Assembly Accuracy 2 min/ea
Suction Cup Positioning Accuracy ±0.1mm
Electrolyte Injection Accuracy ±2%
CCD Positioning Accuracy ±0.05mm
Sealing Stroke Accuracy ±0.02mm
Sealing Pressure Monitoring Accuracy ±0.05% (Max Range: 2T)
Function 1. Compatible with customer standard glove boxes.
2. Modular robotic arm.
3. Vision detection and positioning system.
4. Automatic sealing machine.
5. Automatic Electrolyte dispensing.

IEST Coin Cell Automatic Assembly System(CAAS)

Next-Gen Coin Cell Assembly Solutions For Lab & Industrial-scale

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