# EV Battery Cold Plates

> A machined EV battery cold plate is appropriate for prototype, validation and low-to-mid volume thermal hardware where channel geometry is still changing. Quote the body, cover or joining method, ports, seal geometry, flatness, cleanliness and exact leak-test condition together; machining alone does not define assembly pressure integrity.

- Market: new-energy-vehicles
- HTML page: https://fabvector.com/solutions/ev-battery-cold-plates (Portuguese: https://fabvector.com/pt/solutions/ev-battery-cold-plates)
- Industry hub: https://fabvector.com/industries/new-energy-vehicles
- Quote: https://fabvector.com/quote

## Components and applications

- Battery module cooling plates
- Pack-level thermal baseplates
- Cell test and cycling fixtures
- Power-electronics cooling plates

## Recommended manufacturing route

1. Machine channels with controlled floor and land geometry.
2. Finish gasket or joining surfaces from stable datums.
3. Join or assemble only to the specified process scope.
4. Clean, inspect flatness and run the defined leak test.

## Drawing and RFQ controls

| Control | Guidance |
|---|---|
| Channel lands | Keep sufficient sealing land and define inaccessible burr requirements. |
| Thermal face | State flatness and roughness over the module contact region. |
| Leak test | Specify medium, pressure, dwell, temperature and allowable loss. |

## Recommended materials

- [aluminum-6061](https://fabvector.com/md/materials/aluminum-6061): Machinable and widely used for development cold plates.
- [aluminum-6063](https://fabvector.com/md/materials/aluminum-6063): Higher thermal conductivity for suitable channel designs.
- [copper-c110](https://fabvector.com/md/materials/copper-c110): Higher conductivity where weight and machining cost permit.

## Related manufacturing processes

- [cnc-milling](https://fabvector.com/md/services/cnc-milling)
- [5-axis-machining](https://fabvector.com/md/services/5-axis-machining)
- [prototype-machining](https://fabvector.com/md/services/prototype-machining)
- [production-machining](https://fabvector.com/md/services/production-machining)

## Compatible finishes

- [chromate-conversion](https://fabvector.com/md/finishes/chromate-conversion)
- [electroless-nickel-plating](https://fabvector.com/md/finishes/electroless-nickel-plating)
- [anodizing-type-ii](https://fabvector.com/md/finishes/anodizing-type-ii)

## Inspection to define before production

- Channel, port and seal-geometry dimensional report
- Thermal-face flatness and roughness
- Pressure-decay, helium or bubble test only to the agreed method

## Standards and documentation scope

- **Customer leak-test specification**: The RFQ must define the assembled test method and acceptance threshold.
- **PPAP support**: Critical dimensions and test records can be included in the agreed submission.

## Buyer questions, answered

### Can a prototype cold plate use an O-ring instead of a permanent joint?

Often yes for development access and design iteration, provided the gland, fastener spacing, pressure and coolant compatibility are engineered for the test.

### What leak-test information is required for a quote?

Provide medium, pressure, dwell time, temperature, plugged-port condition and allowable pressure loss or leak rate.

## Related engineering guides

- [Cold plate machining and leak control](https://fabvector.com/blog/liquid-cooling-cold-plate-cnc-machining)
- [Thermal part RFQ guide](https://fabvector.com/custom-cnc-parts/cnc-machined-heat-sinks-cold-plates)