Battery Case And Cover

 

Xiamen Apollo focuses on researching, developing, and producing Battery Case and Cover. Our core product lines include New Energy Vehicle Square Lithium Battery Aluminum Case, New Energy Storage Square Lithium Battery Aluminum Case, Battery Cover Plate, and Cylindrical Stainless Steel Case. We serve industries such as electric power, new energy, rail transit, industrial equipment manufacturing, and data center infrastructure. With core strengths in high conductivity, strong corrosion resistance, and customized service capabilities, we consistently deliver safe, reliable, efficient, and energy-saving electrical connection system solutions to customers worldwide.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. New Energy Vehicle Square Lithium Battery Aluminum Case

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.1 Product overview

 

New Energy Vehicle Square Lithium Battery Aluminum Case
High-strength aluminum alloy drawing process (thickness 0.8-1.2mm)
Suitable for 800V high voltage platform design
IP67/IP69K waterproof rating
Integrated liquid cooling thermal conductivity structure design

 

New Energy Storage Square Lithium Battery Aluminum Case
Support 24V/48V/120V modular design
Capacity covers 50Ah-314Ah (customizable)
Multi-layer insulation protection structure
Suitable for a wide temperature range from -30℃ to 55℃

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.2 Core advantage

 

High safety: built-in explosion-proof valve design, automatic pressure relief when the pressure exceeds the limit, to avoid the risk of explosion.
Strong adaptability: Support customized size (thickness 0.8-3mm, flexible aspect ratio), suitable for new energy vehicle battery pack and energy storage system.
Environmentally friendly and recyclable: Aluminum shell recovery rate exceeds 90%, in line with RoHS/REACH certification.

 

1.3 Technological advantage matrix
 

Dimension	New Energy Vehicle	Energy Storage
Safety performance	Acupuncture does not fire Overcharge protection	UL1973 certification Thermal runaway warning system
Cycle life	4000 times (80% DOD)	6000 times (80% DOD)
Energy density	160Wh/kg	140Wh/kg
Fast charging capability	3C Fast charging Capability	1C Fast Charging Capability
Lightweight design	40% less weight than a steel shell	Optimized fin structure

 

1.4 Manufacturing process highlights
1. Precision molding technology
6000 tons hydraulic drawing equipment

0.05mm wall thickness uniformity control
CNC bending accuracy ±0.1mm

 

2. Surface treatment process
Hard anodizing (film thickness 15-25μm)
Environmentally friendly electrophoretic coating (salt spray test > 1000h)
Laser engraving QR code tracing system

 

1.5 Subdivision type
Flat new energy vehicle aluminum shell: thickness ≤2mm, suitable for CTP (Cell to Pack) technology, improves space utilization by 15%+. - Wide and thick energy storage aluminum shell: wall thickness ≥2.5mm, supports more than 155Ah large-capacity cell, adapts to -20℃~60℃ wide temperature environment.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Battery Cover Plate

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.1 Key components
Substrate and treatment
Aluminum alloy (3003/5052) : density 2.7g/cm³, tensile strength 180- 240MPa, elongation ≥12%;
Sealing: laser welding depth 0.5-1.2mm, helium leak detection rate ≤5×10⁻¹⁰ Pa·m³/s, contact resistance ≤0.3mΩ (IEC 60404).

Safety structure
Explosion-proof valve bursting pressure 0.4- 1.5MPa (adjustable accuracy ±5%), insulation ring temperature resistance -50℃~150℃ (UL94 V-0).

Sealing nail: laser spot welding + ring welding process, air tightness of 1×10⁻⁹ Pa·m³/s.
Explosion-proof valve: continuous laser welding technology, precise control of burst pressure (1.2- 1.5MPa).
Pole: aluminum/copper nickel-plated material, supports multi-pole ear design, internal resistance ≤0.5mΩ.
 

2.2 Core strengths
Safety performance
Explosion-proof design: Built-in explosion-proof film or pressure relief valve, when the internal pressure of the battery rises abnormally, the pressure can be quickly released to avoid the risk of explosion.
Sealing process: laser welding, resistance welding, and other precision welding technology is used to ensure the seamless connection between the shell and the cover plate to prevent electrolyte leakage.
Insulation protection: Through the design of plastic insulating board or insulating coating, the battery cell is isolated from the external environment to avoid a short circuit.

 

2.3 Technical parameter
Internal resistance control: ≤5mΩ (industry-leading level), to ensure battery energy transmission efficiency.
Corrosion resistance: Through the blue dot test, salt spray test, and adaptation to a complex environment.
Environmental protection certification: in line with ROHS, REACH, and other international standards, materials can be recycled.

 

Material type	Composition control	Characteristics advantage	Application scenarios
Aluminum alloy (6061-T6)	Si≤0.6%, Mg 0.8-1.2%	lightweight (density 2.7g/cm³), strength 275MPa	Automotive power battery
Composite	Aluminum +PPO alloy	insulation + impact resistance (notched impact strength 25kJ/m²)	High vibration environment for power tools

 

2.4 Production and technology
Key technology
Stamping: 80-200T high-speed punching machine (JIS 1 precision), continuous die life ≥8 million times, dimensional tolerance ±0.015mm (CPK≥1.67);
Welding: 3000W fiber laser (wavelength 1064nm), weld depth to width ratio 4:1, welding speed 120mm/s, yield ≥99.8%;
Test: X-ray test accuracy 0.02mm (ASTM E94), air tightness test 0.3- 2.0MPa (leakage ≤0.05cc/min), full test coverage of 100%.

 

2.5 Technical highlights
Automatic production: double-station rotating equipment, welding efficiency 1.7s/ piece, yield ≥99.5%.
Reliability verification: IP67 waterproof, salt spray test (500h no corrosion), vibration test (20Hz~2000Hz).
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Cylindrical Stainless Steel Case

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.1 Product features
Material performance: 304/316 stainless steel, tensile strength ≥520MPa, compressive capacity up to 500kg/cm².
Structure design: With an explosion-proof safety valve, supports 18650/21700/26650 and other standardized models, suitable for automated production lines.

3.2 Precision structure design
Wall thickness tolerance ±0.05mm, roundness error ≤0.1mm, length tolerance ±0.15mm (according to GB/T1804-m class)
Support non-standard customization: diameter Φ10-2000mm, length L≤6m, with flange/thread/welding groove and other special structures

 

3.3 Technical parameters and performance advantages

 

Material system

Material type	Component control	Characteristics advantage	Application scenarios
SUS304	Cr≥18%, Ni≥8%	Corrosion resistance (salt spray test 1000h without rust)	Conventional industrial environment
SUS316L	Mo≥2%, low carbon design	Resistant to chloride ion corrosion (applicable to seawater environment)	Marine equipment, chemical containers
SUS444	Ti stabilization treatment	High temperature oxidation resistant (≤600℃)	Boiler, high temperature sensor

 

3.4 Process parameter
Cold heading accuracy: coaxiality ≤0.02mm (three coordinate detection)
Laser welding: penetration depth 0.8-1.2mm, weld width 0.3-0.5mm (with energy distribution diagram)
Surface treatment: nickel plating layer thickness 5-8μm (adhesion test grade 0)

3.5 Application advantages
High consistency: the winding process is mature, the pole slice cutting accuracy is ±5μm, and the battery cycle life is more than 2000 times.
Good heat dissipation: the surface area of the cylindrical structure is large, and the heat dissipation efficiency of the PACK is 20% higher than that of the square battery.
Scenario adaptation: Suitable for power tools (30C discharge), drones (high rate), home energy storage (long life).
 

Type	Core Advantage	Typical Application
Square aluminum shell	Lightweight, high energy density	New energy vehicles, energy storage power stations
Cylindrical stainless steel shell	High security, standardization, and easy maintenance	Power tools, consumer electronics, and backup power supply
Aluminum shell for energy storage	Wide temperature range, large capacity, long life	Industrial and commercial energy storage, household energy storage

 

 

 

 

 

 

 

1. Collectivization strength: a stable industrial foundation
Capital and production capacity: With a registered capital of 120 million yuan, it has laid out modern production bases in Xiamen and Ningbo, with a total annual production capacity of 8,000 tons of metal parts (equipment utilization rate of 92%), and can undertake orders for 100,000 pieces of photovoltaic connectors and 500,000 pieces of relay cores at the same time.

2. Global service: zero-time response network
Localized layout: Set up four regional branches in Spain (Europe), Iran (Middle East), India/Malaysia (Southeast Asia), and Japan (Northeast Asia).

3. Technical genes: from the ability of the leader to reduce costs
Team background: 60% of the core technical team members are from Xiamen Hongfa (the world's first relay in the world), with an average industry experience of 28 years, and have optimized the contact knife structure for ABB, reducing the cost by 12% while maintaining strength.

4. Quality assurance: the reassuring commitment to automotive-grade standards
Process control:
Robot welding CPK≥1.67 (with 2024 Q3 quality report)
100% weld flaw detection (UT MT double inspection, up to GB/T 11345 level II).

 

5. Certification Endorsement
The company has passed various quality system certifications: ISO9001-2015, IATF16949, ROHS, REACH, etc.

 

 

 

 

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