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DV,PV - XDTHERMAL

The Difference Between Automotive Component DV Testing and PV Testing

Automotive Component Definition

The division of automotive components by design ownership can be classified into two categories: components designed by the original equipment manufacturer (OEM) and those designed by suppliers. Components designed by the OEM typically have their DFMEA (Design Failure Modes and Effects Analysis) and DVP (Design Verification Plan) authored by OEM engineers. The OEMs have various system-level and component-level design specifications and testing methods. Within the testing methods, there are specific requirements for test procedures, equipment, and testing frequency.

Battery Cooling Tube Design

Components designed by suppliers are often referred to as “black-box” components, and the DFMEA (Design Failure Modes and Effects Analysis) and DVP (Design Verification Plan) for these components are typically authored by the suppliers. Various testing specifications and testing method requirements from suppliers are usually not directly shared with the OEM, especially in the case of international suppliers, as access to DFMEA documents is typically restricted and may only be viewed at the supplier’s location (without the ability to take photographs).

Definition of DV Testing and PV Testing

Testing is divided into DV and PV. DV stands for Design Verification, and it can be either prototype or tooling parts. PV stands for Product Verification, and it must be tooled parts produced on the supplier’s mass production line. After PV, the parts undergo PPAP approval, granting them the qualification for mass production and supply.

Battery Cooling Plate Design

Difference Between DV Testing and PV Testing

Timing of Testing Differs

DV Testing: DV testing is conducted during the design and development phase.

PV Testing: PV testing takes place during the formal production phase.

 

Different Test Subjects

DV Testing: The test subjects for DV testing are handcrafted parts of the vehicle, which are produced from the supplier’s mass production line.

PV Testing: PV testing involves tooling components of the vehicle, utilized for mass production on the supplier’s production line.

Different Primary Objectives

DV Testing: The primary objective of DV testing is to comprehensively assess the early-stage design, including its structure, materials, functionality, performance, and to identify any design issues, which are subsequently rectified to support the generation of TG2 data and the development of later-stage tooling components.

PV Testing: The main focus of PV testing is to validate product vibration, durability, reliability, and stability under ‘three highs’ conditions.

DV,PV - XDTHERMAL

Is it necessary to perform DV tests on the water-cooling plate ？

water cooling plate DV test report-XD THERMAL

As a crucial component for thermal management in battery system, the water-cooling plate profoundly influences the safety and lifespan of the battery system.

Therefore, prior to leaving the factory, the supplier XDthermal conducts comprehensive product testing, including voltage resistance, airtightness, and burst tests, among others, ensuring the quality and performance of the product.

Moreover, for water-cooling plates operating in specialized conditions, XDthermal also supports more extensive DV tests upon customer request, including but not limited to the air tightness test.👇👇👇

Air tightness test

Static pressure test

Burst test

High temperature resistance test

Low temperature resistance test

High and low temperature cycle

High and low pressure cycle

Internal corrosion test

External corrosion test

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