Honeywell household products and consumer goods group- protable air-conditioner and electric fan with battery:

Application: portable indoor or outdoor
Can cool down for ourdoor tent by battery supply
Requirement : the energy consumption of main power consumption component motor lower, the power-on time higher through battery supply
Original design: using permanent magnet BLDC ,output power is 15W, input power is 33W, efficiency is only 45%, time of battery using is 4hrs.
Now design: adopt hengdrive BLDC, output power is 15W, input power is 21.4W, efficiency is up to 70%, time of battery using lengthen 7hrs.
Hengdrive BLDC: general & standard B3640M-002A，standard size 36X40X4, with installation end face screw locking, high efficiency is 65%-75%,low noise is 48dba,long life is over 10000hrs,low EMI, stepless speed regulation, output air volume . ]'
Features: BLDC with built-in drives and speed controller can lock fanner through screw, it can work when connecting, customer need not to do the driver and debugger.

Features: BLDC with built-in drives and speed controller can lock fanner through screw, it can work when connecting, customer need not to do the driver and debugger.

Characteristics : CW/CCW both rotation, signal function available ,locked rotor protection, low inertia, low noise, low EMI, long life over 10000hrs.

outside drawing: