We machine production parts for EV Battery and BMS Hardware customers, from single prototypes through to repeat batches of tens of thousands. Typical work covers module end plates, busbar supports and cooling plate manifolds, usually in 6061-T6 or 3003.
What makes EV Battery and BMS Hardware different from general machining is not the geometry — it is the documentation and the failure modes. The parts that come back are the ones where creep and thermal cycling drive long-term sealing failure was not designed out at the start.
Parts we machine for EV Battery and BMS Hardware
- Module end plates
- Busbar supports
- Cooling plate manifolds
- BMS enclosures
Materials we run for EV Battery and BMS Hardware
- 6061-T6
- 3003
- C110 copper
- PC/ABS
Standards and documentation
- IEC 62133, UN 38.3 for transport, IP67 for enclosures
Tell us which standard applies and which documents you need with the shipment. Dimensional reports, material certificates, certificates of conformity and first article inspection reports are all available, and it is much cheaper to agree them before the batch runs than to reconstruct them afterwards.
Where EV Battery and BMS Hardware projects usually go wrong
- Creep and thermal cycling drive long-term sealing failure
- Electrical isolation must survive coating
Tolerance and finish we hold
| Requirement | Typical capability |
|---|---|
| General tolerance | +/-0.05 mm on sealing faces; flatness 0.1 mm across the whole plate |
| Surface finish | Ra 0.4 to 3.2 um |
| Material certification | EN 10204 3.1 on request |
| Inspection | Dimensional report, CMM report, FAIR |
| Packaging | VCI and desiccant for steel, individual wrap for cosmetic faces |
Frequently asked questions
Do you have experience with EV Battery and BMS Hardware parts?
Yes. Typical parts we run are module end plates and busbar supports. We can share the process route and inspection approach for a comparable part before you commit.
Which materials do you recommend for EV Battery and BMS Hardware?
6061-T6, 3003, C110 copper, PC/ABS. The right choice depends on which of corrosion, weight, strength and cost is the binding constraint, and we will say so plainly rather than quoting the most expensive option.
What documentation do you provide?
A dimensional report and a certificate of conformity as standard. Material certificates, CMM reports, FAIR and PPAP submissions are available when your quality system requires them.
What tolerances do you hold for EV Battery and BMS Hardware parts?
+/-0.05 mm on sealing faces; flatness 0.1 mm across the whole plate is typical for the industry. Tighter tolerance on individual features is possible and is quoted against the specific feature rather than the whole part.
Related pages
- Industries — the full index for this section.
- CNC Machining for Aerospace Components
- CNC Machining for Hydraulic and Pneumatic Parts
- CNC Machining for Semiconductor Equipment
- CNC Machining for Consumer Electronics
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
Get a price for your part
Send a STEP file and a drawing with tolerances, material and quantity. We quote within one working day and machine in our own facility in Shenzhen — milling, turning, EDM, grinding and finishing under one roof, no trading middleman.
Start an instant quote or send your drawings directly. English-speaking engineering support, DFM feedback before you commit to a batch.