From：CTECHI GROUP Limited Release time：2019-09-24
Overview：Lithium battery case design can be divided into: PVC heat seal, plastic, metal
Lithium battery housing requirements and design
Lithium battery case design can be divided into: PVC heat seal, plastic, metal
PVC heat sealing: What kind of outer casing packaging form is used outside the battery pack, mainly depends on the specific requirements of the customer's product. For the PVC heat sealing package type, it is generally applicable to the battery string and the quantity is small, and the overall weight is light. In the case of (≤ 2kg), it can be used. However, for a battery pack with an overall weight of ≥1kg, it is necessary to add a fixing bracket between the batteries, and after the outer glass fiber board is protected, a PVC heat sealing is used.
Plastic: plastic shell, mainly after different battery packs are shaped, the shell involved may need to open the mold, the mold cost is not a small expense, such as the pre-development period, the product is not fixed, you can use the hand shell proofing (hand board The strength is not as good as the material strength after the mold is set. The requirements on the material and process of the outer casing (especially with the three-proof requirements) will also affect the cost.
Metal: The metal casing is also the same as the plastic casing. Before the product is not finalized or the quantity is not much demand, it is recommended to use the sheet metal sample. This is mainly because the sample preparation has a short delivery time, such as a large batch size, it is also recommended to open the mold. For metal casings with waterproof rating requirements, it will also greatly affect the cost, as well as the metal casing required for special materials (such as titanium alloy), the cost will be higher.
The cost of a lithium battery is mainly composed of a battery cell, a PCM, and a structural component, and it is also required to add a PACK fee, an aging fee, and a management fee of the enterprise. At the same time, due to the technical difficulty of the product, the purchase amount, the non-performing rate requirements are different, the price of lithium batteries will vary greatly!