SMC/PCM Battery Box Mould

 

Printed Circuit Board for Battery Management (PCM) battery box mold is a dedicated mold used to manufacture PCM battery boxes. The PCM battery box is mainly used to accommodate the battery pack, and through its internal printed circuit board to achieve battery management, such as charge control, discharge protection, battery balancing and other functions. The role of the mold is to precisely shape the case of the battery box to ensure that the battery can be safely and stably placed in it, and to provide a suitable installation space for the PCM board.

 

Cavity Part:

• This is the core part of the mold, which directly determines the shape of the battery box. It consists of a concave die and a punch die, and the two cooperate to complete the forming of the battery box. For example, for a cuboid-shaped battery box, the concave die forms the internal spatial shape of the battery box, and the punch is used to form the external outline of the battery box.
• The surface quality of the O-cavity is very high, and it usually requires fine processing and polishing to ensure that the surface of the battery box is smooth, without burr and other defects, and prevent damage to the battery.

Pouring system:

• The main function is to uniformly transport the molten plastic material into the cavity. It includes a main way, a diversion way and a gate. The main channel is the channel connecting the injection molding machine nozzle and the diverter, which diverts the plastic to the gate of each cavity. The gate is the last passage for the plastic to enter the cavity, and its size and position will affect the filling effect of the plastic.
• For the PCM battery box mold, the design of the gate should consider the structural characteristics and appearance requirements of the battery box. If the battery box has a side with high appearance requirements, the location of the gate should try to avoid affecting the appearance quality of this side.

 

 

Cooling system:

• Because the plastic needs to be cooled and solidified after injection into the cavity to form the battery case, the cooling system is critical. It usually consists of a cooling channel, which is generally arranged around the mold cavity.
• By circulating cooling water and other cooling media, you can effectively control the cooling speed of plastics, shorten the molding cycle, and improve production efficiency. Moreover, the reasonable cooling system design can reduce the deformation of the battery box and ensure its dimensional accuracy.

 

 

Ejector system:

• After the battery case has cooled and formed in the cavity, it needs to be removed from the mold. The ejector system is a device used to ejector the molded battery case from the mold cavity.
• Common ejection methods are push rod ejection, push plate ejection, etc. For example, the push rod ejection is done by setting the push rod in the appropriate position of the battery case, and the push rod pushes the battery case out of the cavity when the mold is opened. The ejector system is designed to ensure that the battery box can be released smoothly without causing damage to the battery box.

 

 

 

Die steel:

• It is the main material for manufacturing PCM battery box mold. For example, P20 steel is a commonly used pre-hardened plastic die steel, which has good cutting and polishing properties, and can meet the requirements of the surface quality of the cavity of the battery box mold.
• H13 steel is also a commonly used material, it has high thermal fatigue properties and toughness, suitable for manufacturing battery box molds that need to withstand high injection pressure and frequent opening and closing molds, especially when injection molding some high-performance plastic materials, H13 steel can ensure the service life of the mold.

 

 

CNC machining:

• First, the 3D model of the mold is designed using CAD (computer aided design) software, and then the model data is imported into the CNC (computer numerical control) machining equipment. The CNC machine can accurately process the cavity, core and other parts of the mold.
• For example, when machining cavities, the CNC milling machine can process the blank material into a shape that meets the design requirements through high-speed rotation and precise feed motion of the tool according to the program instructions. Numerical control machining can ensure the dimensional accuracy and shape accuracy of the mold and improve the manufacturing quality of the mold.

 

Electrical discharge machining:

• For some mold parts with complex shapes, such as parts with deep slots, narrow cracks and other structures, EDM is an effective processing method.
• It uses the high temperature generated by the pulse discharge between the electrode and the workpiece to corrode the workpiece material. For example, when manufacturing some of the fine internal structures of the battery box mold, EDM can precisely machined the desired shape without being limited by the shape and size of the tool.

 

Surface treatment:

• After the mold is manufactured, surface treatment is usually required. Such as nitriding treatment, a layer of nitriding with high hardness can be formed on the surface of the mold to improve the wear resistance and corrosion resistance of the mold.
• Hard chrome plating is also a common surface treatment method, chromium plating can improve the finish and hardness of the mold surface, conducive to the release of the battery box, and can extend the service life of the mold.

 

Consumer Electronics:

• In smart phones, tablets, laptops and other devices, the battery box mold is used to manufacture the battery box of the device. These devices have high requirements for the dimensional accuracy, appearance quality and battery management functions of the battery box.
• For example, smart phone battery box needs to be small and delicate, and to be able to effectively protect the battery and achieve intelligent management of the battery, PCM battery box mold can meet these requirements, manufacturing a smart phone design of the battery box.

 

Power tools:

• Power tools such as electric drills, chainsaws, etc., usually use rechargeable battery packs, and PCM battery box molds are used to manufacture battery boxes for these power tools. The battery box needs to have good mechanical strength and stability to withstand the vibration and impact of power tools during use.
• And the battery box manufactured by the mold can achieve reasonable management of the battery through its internal PCM, extend the service life of the battery, and improve the performance of power tools.

 

New energy vehicle field:

• The power battery system of new energy vehicles requires a large number of battery boxes to accommodate the battery modules. PCM battery box molds play a key role in this field, which can manufacture large, high-performance battery boxes.
• These battery boxes must not only meet the requirements of mechanical strength, waterproof and dustproof, but also achieve complex battery management functions through PCM, such as battery thermal management, power monitoring.

 

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