Our company has been mass producing automotive battery components since 2012.
They come in a wide range of sizes, shapes and materials, from electric to HV vehicles.
This time, we would like to introduce the battery cover, which is one of the largest products we have worked on in the past.
Here are some of the products we have worked on in the past.
Shape of product
Product size: 1,508mm x 743mm x 175mm
Projection area: 10,555cm2
Flesh thickness: Basic flesh thickness 3mm ( max 5.6mm )
Weight: 5,412g
Moulding machine conditions
Required clamping tonnage in normal moulding 10,555 cm2 × 350 kg/m2 = 3700 tonnes
→Moulding machine over 2,000 tonnes: Cost increase due to higher equipment costs
(Verify with flow analysis whether mass production can be carried out using a moulding machine with a capacity of 2000 tonnes or less).
Product requirements
Deformation in the Z direction must be 10 mm or less.
(1) Mass production challenge with a moulding machine of 2000 tonnes or less.
Adjust injection timing using sequential setting of hot runner valve gates.
Translated with www.DeepL.com/Translator (free version)
By shifting the injection timing, the required clamping force could be reduced to 2000 tons or less.
(2) Challenge to reduce deformation in the Z-direction to 10 mm or less
The product shape was partially modified and the target deformation of 10 mm or less was achieved.
It may be said that the sequential setting of hot runners can be effective in large moldings.
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