Last Updated: 2026-05-08
Global OEM manufacturing authority
Custom EV Battery Liquid Cooling Plates for OEM Pack Programs
ToneCooling Technology Co., Ltd manufactures custom EV battery liquid cooling plates for battery modules and pack-level thermal management. Send cell layout, heat load, coolant, flow rate, pressure drop limit, temperature uniformity target, mounting envelope, validation requirements, and annual demand so our engineering team can review the cold plate process route before quotation.
Battery Cold Plate Design Scope
EV battery cooling plates are reviewed around the pack architecture, contact area, coolant loop, pressure drop budget, mounting interface, corrosion risk, and production route. ToneCooling does not force a standard plate into a custom battery pack; the channel structure, joining method, port layout, and inspection plan are selected after the project inputs are clear.
Pack Temperature Uniformity
Channel layout, contact area, TIM stack-up, coolant flow, and inlet temperature are reviewed together to reduce cell-to-cell temperature spread where the customer specification requires it.
Hydraulic Budget
Flow rate, coolant concentration, port size, manifold balance, and maximum pressure drop define whether a serpentine, parallel-flow, tubed, or microchannel route is practical.
Manufacturing Route
FSW aluminum, CAB/stamped-brazed aluminum, CNC plus brazing, tubed structures, or microchannel designs are compared against geometry, pressure, validation, cost, and volume.
Cold Plate Process Route Selection
| Route | Best Fit | Key Review Points |
|---|---|---|
| FSW aluminum cold plate | Large aluminum plates, weight-sensitive packs, repeatable weld paths | Tool access, weld path, start/stop zone, backing support, distortion, post-machining, leak test plan |
| CAB or stamped-brazed aluminum plate | Higher-volume aluminum battery plates with suitable channel geometry | Braze joint design, fixture control, cleanliness, flux/residue control, flatness, corrosion compatibility |
| CNC machined and brazed cold plate | Prototype validation, complex interfaces, controlled internal channels | Tool reach, burr removal, joint clearance, leak path risk, blocked-channel inspection |
| Tubed cold plate | Moderate heat flux and simpler routing where cost and manufacturability dominate | Tube bend radius, tube-to-plate contact, connector brazing, pressure test, contact resistance |
| Microchannel structure | High local heat flux where pressure drop and cleanliness can be controlled | Clogging risk, cleaning process, manifold distribution, pressure drop, inspection access |
EV Battery Cold Plate RFQ Checklist
For a practical quotation, include the inputs below in the form or drawing package. If some data is not ready, send the available layout and target limits so the engineering team can identify the next missing items.
- Battery cell format: prismatic, pouch, cylindrical, or other
- Module or pack layout, heat source map, and contact surface area
- Heat generation per module or pack and duty cycle
- Coolant type, concentration, inlet temperature, and operating temperature range
- Flow rate per plate or loop and maximum pressure drop
- Target cell temperature, plate temperature, or temperature uniformity
- Plate envelope, stack height, mounting holes, compression load, and flatness target
- Port position, connector type, manifold routing, and hose clearance
- Material, coating, corrosion, and mixed-metal loop requirements
- Leak test, proof pressure, pressure cycling, thermal cycling, and cleanliness requirements
- Prototype quantity, pilot quantity, annual demand, and target validation schedule
- STEP, STP, PDF, DWG, DXF, ZIP, or pack layout files if available
Validation Items to Confirm Before Production
Final performance and quality targets depend on the customer drawing, coolant chemistry, assembly method, operating pressure, and test standard. The items below should be confirmed before design freeze or production release.
Leak and Pressure Test
Leak method, acceptance criteria, proof pressure, and pressure cycling should be defined during DFM. Helium, pressure decay, or hydrostatic testing can be specified where suitable.
Thermal Validation
Thermal performance should be verified against the agreed heat load, coolant flow, inlet temperature, contact condition, and temperature uniformity target.
Coolant and Corrosion
Material, coating, galvanic corrosion risk, coolant concentration, and long-term compatibility should be reviewed before the production route is fixed.
EV Battery Cold Plate FAQ
What information is needed for an EV battery cold plate RFQ?
Provide the cell or module layout, pack envelope, heat load, coolant, flow rate, pressure drop limit, target temperature or temperature uniformity, port position, material preference, validation requirements, prototype quantity, annual demand, and drawings if available.
Which cold plate process is suitable for an EV battery pack?
The process depends on plate size, channel geometry, pressure drop budget, weight target, production volume, validation requirements, and cost target. Common routes include FSW aluminum, CAB or stamped-brazed aluminum, CNC plus brazing, tubed structures, and microchannel designs when suitable.
Can ToneCooling review prismatic, pouch, and cylindrical battery layouts?
Yes. ToneCooling can review custom cooling plate layouts for prismatic, pouch, cylindrical, and module-level battery designs, subject to drawing review and customer thermal requirements.
Is drawing upload required before quotation?
Drawing upload is not mandatory for first contact, but STEP, STP, PDF, DWG, DXF, ZIP, or pack layout files help the engineering team review manufacturability, ports, envelope, and quotation risk faster.
How are leak testing and pressure requirements defined?
Leak testing, proof pressure, pressure cycling, and acceptance criteria are defined during DFM based on working pressure, coolant, joining process, customer standard, and validation plan.
Can the same supplier support prototypes and batch production?
ToneCooling can review prototype, pilot, and batch production paths. The recommended route depends on drawing maturity, tooling needs, material availability, validation requirements, and forecast volume.
