Suzhou Daiming Brings Battery PCM Thermal Management to E-Bikes, Electric Go-Karts and Light EVs

As electric bicycles, electric go-karts, electric scooters and other light electric vehicles accelerate into daily life, their batteries face a growing list of demands: fast charging, high-rate discharge, summer heat and winter cold. For the compact battery packs inside these vehicles, temperature is one of the most important factors in battery life, which is why battery thermal management has become central to e-bike battery safety, battery overheating protection and battery pack cooling solution design.

Building on its long-standing expertise in electrical materials, Suzhou Daiming Electrical Materials Co., Ltd. is now bringing battery PCM thermal management to light electric vehicles with the launch of its PCM Battery Thermal ManagementPack. Using Phase Change Material (PCM) as the core thermal-management medium, thePack is designed for e-bike battery packs, electric go-kart batteries, electric scooter packs and other applications where space is limited, weight matters, and battery life protection is a priority.

## Why Temperature Decides Battery Life

Lithium batteries lose capacity when they run hot and lose performance when they run cold. Over time, repeated exposure to high temperature accelerates battery degradation, while cold weather temporarily shrinks available range. For light electric vehicles, the problem is amplified: high-rate discharge during acceleration and frequent fast charging both push cell temperature upward, while outdoor parking exposes packs to winter cold and summer heat.

Because they are phase changing materials, PCMs absorb thermal energy as they melt and release it as they solidify. Within a specific temperature window, this phase change technology holds battery temperature steady, improving battery temperature stability and battery temperature uniformity across the pack. As a latent heat storage material and an effective battery heat dissipation material, PCM buffers temperature fluctuations and reduces the thermal stress that drives capacity fade — which is why phase change material thermal management and phase change material battery thermal management are now proven approaches for compact vehicles, and why PCM is a proven phase change material for lithium battery packs and a trusted thermal management material for batteries.

The result is battery cycle life improvement, better battery capacity retention, and battery longevity thermal management that protects electric vehicle battery life extension without adding mechanical complexity. By keeping cells closer to their ideal operating window, PCM also supports battery capacity retention thermal management and battery degradation thermal management by slowing capacity fade over hundreds of cycles.

## Cold Weather Protection: Keeping Range in Winter

Cold weather is one of the biggest enemies of lithium battery low temperature performance. When electrolyte conductivity drops in the cold, usable capacity falls and EV range cold weather losses become a real concern for e-bike riders and go-kart users. As a latent heat storage material, phase change material provides battery cold weather protection and EV battery cold protection by releasing stored latent heat as temperatures fall — a passive battery warming mechanism and an energy-free battery warming solution that moderates the temperature drop inside the pack.

This helps battery range improvement winter performance: a pack that stays closer to its ideal operating temperature delivers more usable energy on cold mornings. Whether applied as an e-bike battery insulation pack, a PCM thermal pad for battery cells, or integrated into the pack as PCM batteryPack insulation, PCM supports battery performance improvement cold weather and e-bike battery performance winter riding. For extreme conditions, it can be paired with an active battery preheating system or low temperature battery thermal management to close the gap further.

## Overheating Protection and Thermal Runaway Prevention

Heat is also a safety issue. Overheating accelerates degradation, and in the worst case, uncontrolled temperature rise can trigger thermal runaway — a chain reaction between adjacent cells that is difficult to stop once started. Battery safety thermal management therefore has two jobs: keep cells cool enough to stay healthy, and slow down thermal runaway propagation.

PCM is an electric vehicle battery safety material that performs both roles. Its high heat capacity absorbs surge heat from fast charging and high-rate discharge, acting as a thermal buffer that delays and flattens temperature spikes — a practical form of battery overheating protection and battery thermal runaway prevention. As thermal management for lithium battery safety, PCM also works as a thermal propagation barrier between cells, contributing to battery pack thermal propagation prevention, batteryPack thermal isolation and battery cell to cell thermal isolation, and serving as a PCM fire barrier battery material. Combined with battery pack fire retardant materials, PCM-based battery thermal management adds a passive, cost-effective layer of battery thermal runaway mitigation and battery thermal runaway chain reaction prevention — an essential part of battery thermal runaway protection and a battery thermal protection material designers can rely on.

## From E-Bikes to Go-Karts: Applications Across Light EVs

The PCM Battery Thermal ManagementPack is designed for a wide range of light electric vehicle and industrial battery applications, including:

- Battery thermal management for electric go-kart battery packs

- E-bike battery safety and e-bike battery pack PCM integration

- Battery thermal management for two wheeler EV and electric two-wheeler battery thermal management

- Electric scooter battery thermal protection and e-bike battery insulation pack options

- Battery thermal management for golf cart batteries and electric motorcycle battery cooling

- Battery thermal management for forklift batteries

- Battery thermal management for power tool batteries

- Battery thermal management for robot battery packs

- Battery thermal management for AGV battery packs

- Battery thermal management for drone battery packs

- Portable power station battery thermal management for camping and outdoor use

- Battery thermal management for three wheeler EV packs

- Battery thermal management swappable battery packs for e-bike battery-swap networks

- Cylindrical battery thermal management — including 18650 battery thermal management and 21700 battery thermal management — plus prismatic cell thermal management and pouch cell thermal management options for different e-bike and go-kart pack formats

- BatteryPack thermal management, battery pack thermal management systems and EV battery pack thermal management systems for larger light EV platforms

Because PCM is passive and shape-adaptable, it can be integrated as a thermal pad for battery, PCM heat sink, phase change heat sink, PCM cooling pad, PCM thermal pad battery insulation, or composite phase change material sheet inside battery packs — supporting battery pack thermal design, battery thermal management system design and PCM battery pack integration as a drop in PCM thermal management solution, while enabling battery thermal management without coolant, no pump battery cooling, no moving parts and no continuous energy consumption.

## A Passive Solution for Fast Charging and High-Rate Applications

Fast charging generates heat faster than conventional cooling can always remove it, making battery thermal management fast charging and ultra fast charging battery thermal management top priorities for light EV designers. A passive PCM cooling system — a passive cooling solution for EV battery packs — provides a natural answer: the material absorbs the heat peak during charging and releases it gradually afterwards, reducing the load on active cooling and enabling more consistent charging performance.

The passive vs active battery thermal management decision is therefore becoming simpler for compact packs. Compared with active systems, PCM-based battery thermal management offers passive thermal management advantages that include reduced system complexity, a compact and lightweight battery pack thermal solution, lower cost, and maintenance free battery thermal management. For e-bike batteries, electric go-kart packs and other EV battery pack thermal management systems where simplicity matters, battery thermal management without active cooling — passive thermal management for EV batteries — is often the most practical choice, and a genuine battery thermal management innovation for the segment.

PCM also improves battery pack thermal management reliability with no moving parts to fail, supports battery thermal management cost reduction, simplifies battery pack thermal management integration, and delivers sustainable battery thermal management as an eco friendly battery cooling material that consumes no energy.

## Material Solutions for the Next Generation of Electrification

The launch extends Suzhou Daiming's material technology portfolio in two complementary directions: high-performance enamelled wire for the motor side, and PCM battery thermal management for the battery side. As the battery thermal management market grows and the PCM thermal management industry adopts lighter, safer and more sustainable designs, the company's battery thermal management R&D is developing PCM material formulations for different operating temperature ranges, battery configurations and application environments — engineered for high PCM thermal conductivity and long-term stability, and including organic phase change material such as phase change material paraffin wax composites, a widely used form of paraffin wax thermal storage, plus microencapsulated PCM (an encapsulated phase change material), composite PCM spanning expanded graphite PCM and graphene enhanced PCM, form stable PCM battery designs and non-leaking PCM battery options.

For packs where operating temperature must be held precisely, designers can tune the melting point of the PCM material for battery pack temperature regulation. LFP battery thermal management is especially relevant for e-bike packs, where LFP cells are widely used. The same passive platform extends to lithium iron phosphate battery thermal management and NMC battery thermal management for high-power go-kart and electric motorcycle packs. ThePack also contributes to EV battery insulation, acting as a battery pack insulation material and battery thermal insulation material — practical lithium battery thermal insulation — that slows heat exchange with the environment and protects against thermal extremes.

With its PCM Battery Thermal Management Pack, Suzhou Daiming is building PCM battery pack and battery pack thermal management solutions for the next generation of electrification — combining Battery Thermal Protection, Battery Thermal Runaway Protection and EV Battery Thermal Management in one passive material platform. As the battery thermal management technology trend — and the broader EV battery pack thermal management trend — moves toward next generation battery thermal management, and as solid state battery thermal management needs emerge, the company is well positioned to deliver.