From Being Able to Move to Being Able to Work, Why Thermal Management Suddenly Matters to Robots

1.Introduction
2.Why Heat Is a Different Kind of Problem for Robots
3.Small Scale Active Cooling Is Becoming a Real Requirement
4.Where BESTAR Comes In
5.What Robot Thermal Management Really Comes Down To

Introduction
The humanoid robot area was quite different from the previous year in the World Artificial Intelligence Conference 2026 in Shanghai. A small number of robots were rather than dancing or doing backflips on stage for a few minutes, spread on the floors of the exhibition halls for hours engaging with visitors, showing them around and answering their questions. Whereas in the past, humanoid robots would stand there for photos during major exhibitions, this time at this scale they were allowed to operate normally in the show floor.
That shift matters more than it looks. A robot performing a two minute demo only needs to survive a short burst of motion. A robot greeting visitors and answering questions for an entire day needs to run its joints, cameras, and onboard processors continuously, hour after hour, without a break. Once robots move from being shown off to being put to work, the question changes from what a robot can do to how long it can keep doing it. That question comes down to heat.

Why Heat Is a Different Kind of Problem for Robots
A robot is not just a chip in a box. It is a chip, a set of cameras, and a group of motors all working together at the same time, inside joints and limbs that are often quite small.
Continuous walking or gesturing keeps motors under sustained load. Vision systems for recognizing people and objects run constantly in the background. Joint controllers need to make fine adjustments many times a second to keep movement smooth. On top of all this, more robots now run part of their AI model locally inside the body instead of only in the cloud, which adds another steady source of heat right next to the motors and sensors.
The impact of using these loads together is more than just a slow chip. If windings are hot when operating, then motor performance can drop, which causing it to move less precisely or motor movement to be less steady. The battery lifetime reduces at high temperatures. Parts that are close to the heat source may break early and multiple overheats may cause a robot to stop or shut down while working. That is, heat in a robot does not just slow down computing. It can have direct impact on the accuracy of the robot's movements, its working time and reliability over time.

Small Scale Active Cooling Is Becoming a Real Requirement
This is exactly the kind of problem that has recently pushed robot makers toward small, targeted active cooling instead of relying only on passive heat sinks.
For example, Xiaomi went so far as to work on their robot hand. During heavy load operation, a single hand might consume more than 100w from the motor tower, and at typical motors efficiencies much more than 30w turns directly into heat in the relatively confined space of the motor tower. Since there's no space for a large external fan, the Xiaomi team made use of a biological approach that cool human skin by sweating. It takes more than 2000 joules of heat to evaporate 1 milliliter of water at room temperature.
The team built a liquid cooling loop directly into the compact forearm structure by using metal 3D printing. The heat from the motors is transported by a micro pump to an evaporation zone where water evaporates and cools the zone rapidly to pull the temperature down. In testing, this bionic sweat gland system can evaporate at the rate of about 0.5 milliliters at a rate of 10 watts per minute, in a structure small enough to fit into a robotic forearm.
This case shows where the whole industry is heading. Passive heat spreading alone is no longer enough once motors, sensors, and local AI processing are packed into small, joint sized spaces. Robot makers are now looking for local, active cooling that can sit right next to the heat source, without adding meaningful size, weight, or noise.

Where BESTAR Comes In
Thermal management in small, power dense electronics is the area BESTAR has focused on for years. Working with piezoelectric ceramics and precision electroacoustic components, BESTAR has already built up real experience solving heat problems inside slim, compact consumer devices such as tablets, where space is just as limited as it is inside a robot joint.
BESTAR's core cooling technologies, including micro piezoelectric liquid cooling modules and micro piezoelectric fan cooling modules, are built around the same core idea. Instead of relying on a single large heat sink or an external fan, they use compact, actively driven components placed close to the actual heat source. The liquid cooling modules move coolant through sealed microchannels to pull heat away from a hot spot and release it elsewhere, while the piezoelectric fan modules generate a focused, high frequency airflow to cool a surface directly, both without a traditional motor.
BESTAR is not stopping at tablets and phones. The company is actively extending this same technology base toward a wider range of micro devices, robotics included, where the requirements are demanding but familiar to BESTAR, low power draw, low noise, and a footprint measured in millimeters. This is an ongoing effort, and BESTAR continues to refine its designs and test new configurations as customer requirements evolve, working step by step from proven consumer electronics applications toward the more compact, higher power density needs of robotic joints and limbs.

What Robot Thermal Management Really Comes Down To
The more a robot behaves like a body that is online and working all day, every day, the more its thermal management starts to function like its own physiology, a background system that quietly keeps everything else running.
While the companies that have been pushing robots from stage-walking to real, sustained deployment become viable, the ones that can crack the heat problem in small, confined spaces will directly influence the capabilities of this new generation of robots. BESTAR welcomes robotics teams and component suppliers who are working on this exact challenge to get in touch and discuss specific power, space, and performance requirements.