Description
Battery Specification and Service
I. Core Parameters of Pouch Cell (NCM811 – Fast-Charging Graphite, 9/10 Layers)
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Category
|
Parameter Item
|
Specification
|
|---|---|---|
|
Basic Parameters
|
Nominal Capacity
|
1.12 Ah
|
|
Voltage Range
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2.75 V ~ 4.2 V
|
|
|
Cell Structure
|
Stacked
|
|
|
N/P Ratio
|
1.13
|
|
|
Separator
|
12 μm PE + 2 μm Ceramic Coating
|
|
|
Cathode
|
Material
|
NCM811
|
|
Active Material Ratio
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95.7%
|
|
|
Compaction Density
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3.4 g/cc
|
|
|
Single-Side Areal Density
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11 mg/cm²
|
|
|
Specific Capacity
|
205 mAh/g
|
|
|
Number of Layers
|
9 layers
|
|
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Dimensions
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45.5 × 64 mm
|
|
|
Anode
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Material
|
Graphite (Gr)
|
|
Active Material Ratio
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95.5%
|
|
|
Compaction Density
|
1.45 g/cc
|
|
|
Single-Side Areal Density
|
7.4 mg/cm²
|
|
|
Specific Capacity
|
345 mAh/g
|
|
|
Number of Layers
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10 layers
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|
|
Dimensions
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46.5 × 65 mm
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II. Coulomb Cell-Related Service List
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Service Category
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Specific Service Content
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|---|---|
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Supply of High-Performance Cathode & Anode Materials
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Provide various high-performance cathode and anode materials for lithium-ion batteries and sodium-ion batteries
|
|
Custom Electrolyte Formulation & Preparation Service
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Provide high-purity battery-grade lithium salts, sodium salts, additives and solvents; support custom synthesis of new molecules; support formulation preparation of standard high-performance electrolytes for major manufacturers
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|
Custom Electrode Sheets
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Cathode and anode materials can be specified (materials from major manufacturers or customer-supplied synthetic materials); areal density, formulation, compaction, etc., can be customized on demand; areal density covers 6-40 mg/cm² on single side; supports wet process and dry process
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|
Custom Separator Coating
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Provide custom coating services for separator coatings of different systems
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|
Solid-State Battery-Related Materials
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Supply lithium niobium oxide, sulfide solid electrolytes, sodium-ion sulfides and solid electrolytes
|
|
Custom Finished Cells (Special Type)
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High energy density (energy density ≥ 380, stable cycle), high rate (FPV drone batteries), high safety (energy density ≥ 300, nail penetration resistant, 180°C hot box test passed), lithium-ion anode-free (energy density ≥ 500)
|
|
Custom Bare Cells
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Support custom bare cells of various systemsCathode: Lithium-ion (NCM, LFP, LCO, Li-rich, LMFP) / Sodium-ion (NFM, NMO, NFPP, NVP, NFS)Anode: Graphite, Si-C, hard carbon, lithium metal, carbon-coated aluminum foil / copper foil, alloy anode, tin anode
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|
Battery Supporting Fixtures
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Supply of conventional battery test fixtures and special fixtures for solid-state batteries
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Battery Safety Performance Testing
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Nail penetration, short circuit, AR, heating, overcharge, overdischarge and other safety performance tests
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|
Battery Environmental Performance Testing
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Ambient temperature cycle \ rate test, high temperature 45℃ performance test, low temperature -10℃ ~ -50℃ performance test
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III. Electrolyte Filling Amount & Formation Process for Long-Cycle Industrial Liquid Batteries (Reference Process)
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Operation Process
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Reference Operation Steps
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|---|---|
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1. Cell Electrolyte Filling
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Electrolyte filling coefficient: 3.0 g/Ah; filling completed in a glove box
|
|
2. Cell Wetting
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Standing temperature: 45℃, time: 24h; standing completed in an oven
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|
3. Cell Formation
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Formation completed on formation equipment with heating and pressurization; 45℃, 3.0 kg/cm², 0.02C charging for 0.5h, 0.1C constant current charging until 4.0V ends
|
|
4. Cell Aging
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Aging temperature: 45℃, time: 24h
|
|
5. Cell Grading
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0.1C or 0.2C constant current charging and discharging to cut-off voltage (2.75-4.2V), 2 cycles
|
|
6. Cell Testing
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Set cycle process according to required rate
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IV. Performance Curves
Test conditions
25℃, formation with 0.2A charge and 0.2A discharge for 1 cycle, normal cycling at 1A charge/discharge, charge-discharge voltage range 2.5V–4.25V, NCM-GR 1Ah 1C-1C
Test Conditions
25℃, 1 cycle of formation at 0.2A charge / 0.2A discharge, normal cycling at 4A charge/discharge, charge/discharge voltage range: 2.5V–4.25V, NCM-GR, 1Ah, 4C–4C
V. Soft Pack Cell Design Dimensions (Including Tolerances)
|
Item
|
Parameter / mm
|
Tolerance / mm
|
|---|---|---|
|
Cell Width (W)
|
50
|
±1.0
|
|
Cell Folded Edge Width (W1)
|
1
|
±0.5
|
|
Cell Length (H)
|
80
|
±1.0
|
|
Tab Height (H1)
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14.5
|
±1.0
|
|
Cell Top Edge Height (H2)
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10
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±1.0
|
|
Cathode Tab Width (B1)
|
8
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±0.2
|
|
Anode Tab Width (B2)
|
8
|
±0.2
|
|
Anode Tab Edge Width (W2)
|
12
|
±1.0
|
|
Cathode Tab Edge Width (W3)
|
12
|
±1.0
|
|
Sealant Exposure Height (D)
|
1
|
±1.0
|
VI. Instructions for Electrode & Cell Customization Services
1. Electrode Sheet Customization
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Low MOQ: Customization available with only 3kg of active material
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Transparent Formulation: Coating according to the provided formula
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Adjustable Parameters: Current collector specifications; various electrode dimensions
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Process Selection: Supports dry/wet electrode sheet customization
2. Cell Customization
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Customizable Dimensions: Cell size, nominal capacity, cathode/anode materials, separator coating
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Process Support: Supports dry-process electrode customization
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