The main causes of heating aging, reduced driving range and unstable power of most 36V electric mini cart batteries on the market are not defective cells, but simple and crude bottom heat dissipation structures. Most low-cost batteries adopt ordinary plastic bottom plates or thin iron plates, which feature strong heat insulation and poor thermal conductivity. All heat generated during battery operation accumulates at the bottom of cells without effective dissipation. Mini carts are widely used in park patrol, scenic sightseeing, community short-distance travel and indoor site transportation, with frequent start-stop, long-time low-speed continuous discharge, closed compartment storage and outdoor exposure in summer. Long-term bottom heat accumulation will continuously bake cells, expand temperature difference between cells, further causing accelerated cell aging, increased internal resistance, sharp range attenuation, and even sudden vehicle power failure triggered by temperature control protection. As the core component for absorbing and transferring cell heat in the battery heat dissipation system, the heat dissipation substrate is also a key part that most manufacturers cut costs on. Abandoning low-cost inferior bottom plates, the 36V Electric Mini Cart Battery is equipped with customized thickened integrated aluminum alloy heat dissipation substrate. It carries out comprehensive upgrades in six aspects including substrate material, forming process, fitting design, thermal conductivity, physical protection and weather resistance. Relying on the high-performance heat dissipation substrate, it opens up the bottom heat dissipation channel, solves the bottom heat accumulation problem of 36V low-voltage mini cart batteries fundamentally, adapts to all-scenario and all-season driving conditions, and protects stable cell operation for a long time.

　　Made of aerospace-grade 6063 aluminum alloy with native excellent thermal conductivity. Ordinary iron plates have extremely low thermal conductivity, and plastic plates completely block heat dissipation. This battery’s dedicated heat dissipation substrate adopts original aerospace-grade 6063 6063 aluminum alloy without recycled impure aluminum. Its thermal conductivity is more than 8 times that of ordinary iron plates, which can quickly absorb concentrated heat released from cell bottoms and avoid local heat accumulation. Aiming at the working condition of 36V batteries with low-voltage continuous discharge and heat concentrated at cell bottoms, the high thermal conductivity aluminum alloy substrate absorbs residual heat in real time, prevents cells from being burned by high temperature, matches the exclusive discharge power of 36V batteries, and realizes timely heat conduction without heat accumulation.

　　Integrated die-casting process eliminates heat conduction breakpoints. Some batteries on the market adopt spliced heat dissipation bottom plates to reduce costs. Splicing gaps will form heat conduction breakpoints, leading to uneven heat diffusion and inconsistent local temperature. The heat dissipation substrate of this 36V Electric Mini Cart Battery adopts high-pressure integrated die-casting molding technology with no splicing gaps and welding breakpoints, featuring a complete and flat plate surface. The integrated structure supports unobstructed horizontal heat diffusion across the whole plate, balances the temperature of all cells thoroughly, maintains consistent discharge output, and ensures smooth driving power without stutter.

　　Micron-level surface polishing realizes seamless fitting to improve heat conduction efficiency. Air gaps between cells and heat dissipation substrates will form air insulation layers and weaken heat dissipation effect greatly. The substrate surface is processed with micron-level precision polishing for ultra-high flatness. Cooperated with the upper thermal conductive silica gel layer, it achieves 100% seamless fitting with cell bottoms and completely eliminates air heat dissipation blind spots. Compared with ordinary rough bottom plates, the fitting thermal conductivity is improved by 60% with lossless heat transfer, maximizing bottom heat dissipation efficiency and keeping cell bottoms at constant temperature during long-time low-speed driving.

　　Thickened substrate realizes dual functions of efficient heat dissipation and bottom compression resistance. Ordinary thin substrates less than 1mm are easy to deform and insufficient in heat capacity. This battery adopts a 3mm thickened substrate. On one hand, it improves overall heat capacity to absorb instantaneous heat generated during climbing and acceleration. On the other hand, the thickened aluminum alloy plate with high mechanical strength acts as a bottom protective plate, resisting external damage such as stone collision, vehicle compression and heavy pressure, avoiding cell deformation, and isolating ground moisture and hard object puncture. It integrates heat dissipation performance and physical protection performance perfectly.

　　Anodized anti-corrosion coating adapts to humid outdoor environments. Mini carts often work on rainy days and in humid parks. Ordinary aluminum plates are prone to oxidation and corrosion after long-term exposure to moisture, and the generated oxidation insulation layer will completely lose heat dissipation capacity. The substrate is treated with hard anodization anti-corrosion technology to form a dense protective film, resisting moisture corrosion, acid and alkali erosion and rust. It maintains original thermal conductivity for long-term outdoor use. With the high-performance dedicated heat dissipation substrate, the 36V Electric Mini Cart Battery makes up for the shortcoming of insufficient bottom heat dissipation, reduces cell thermal loss, slows down battery aging, extends cycle life effectively, and copes with extreme temperatures and complex road conditions. It is an ideal durable and cost-effective power supply for 36V electric mini carts.