Jiashikai 48V (16 series) or 24V (8 series 2 parallel) with protection board compartment

I. Overview
This model is a dedicated battery holder for Jiashikai 32140 cells, designed specifically for assembling 32140 lithium battery modules. Its structure is adapted for cell installation and securing, nickel strip wiring, and integrated protection board assembly. The overall structure is stable and has high assembly tolerance, capable of meeting the assembly and usage requirements of two common lithium battery module specifications, making it suitable for building battery packs for energy storage and power equipment scenarios.

II. Compatible Specifications
This holder supports the assembly of dual-specification battery modules and is compatible with two mainstream wiring schemes, offering extremely high adaptability:
- 48V 16 series 32140 lithium battery pack assembly
- 24V 8 series 2 parallel 32140 lithium battery pack assembly

III. Core Structural Design
1. Nickel Strip Routing Guide Slot Design
The holder reserves dedicated guide slots for nickel strip connections. The slot dimensions are adapted to standard battery connection nickel strip specifications, ensuring neat routing and precise positioning. This effectively secures the nickel strip routing path, preventing misalignment, overlap, bending, or damage. It also standardizes module wiring layout, reduces the risk of short circuits and poor contact, and enhances the overall assembly integrity and electrical safety of the battery pack.
2. Dedicated Installation Position for Balance Protection Board
The model reserves ample space for the battery balance protection board. The card slots and limiting structures fit the dimensions of standard protection boards. No additional drilling, grinding, or modification is required, as it directly accommodates the snug installation and securing of the balance protection board, ensuring the protection board is mounted flat and securely. This facilitates the proper functioning of subsequent battery balancing and overcharge/overdischarge protection, while simplifying the overall module assembly process.
3. Cell Fixing Structure
The cell slots of the holder feature a precise tolerance design, adapted to the dimensions of 32140 cylindrical cells. The fit is moderately tight, securely fixing individual cells, preventing them from loosening, shifting, or colliding. The cell arrangement has reasonable spacing, providing natural heat dissipation gaps to prevent heat buildup during battery pack operation and ensure long-term stable operation of the module.

IV. Recommended 3D Printing Parameters
To ensure the structural strength, dimensional accuracy, and durability of the holder, the following printing parameters are recommended for conventional FDM 3D printers:
- Recommended filament: PETG/ABS (high toughness, high temperature resistance, not easily deformed, suitable for long-term use scenarios of battery modules)
- Layer height: 0.2mm (balancing printing accuracy and efficiency)
- Wall thickness: 2 walls or more to ensure structural rigidity
- Infill density: 15%-20% (balancing strength and lightweight, without excessive infill redundancy)
- Supports: Only add to complex slots as needed, to avoid excess support residue affecting assembly

V. Assembly Instructions
1. After printing, clean burrs and support residue from the model, and confirm that the cell slots, nickel strip guide slots, and protection board mounting positions are free of blockages or deformation;
2. Arrange the 32140 cells according to the 48V 16 series and 24V 8 series 2 parallel specifications, ensuring the cells are fully engaged in the limiting slots;
3. Lay and arrange the connecting nickel strips along the dedicated guide slots, then complete the series-parallel welding of the cells;
4. Insert the balance protection board into the reserved installation space, and after securing it in place, complete the overall module wiring assembly.