High power brushless DC motor and control box structure with heat dissipation arrangement

1. A motor, comprising:

a) a motor body, the motor body comprising two ends, a shaft, a rotor assembly, a stator assembly, a housing provided with a first plurality of ventilation holes, a front end cover, and a rear end cover provided with a plurality of through-holes;

b) a damping ring, the damping ring comprising a bottom;

c) a mounting bracket;

d) a locking device;

e) a control box; and

f) a connection housing, the connection housing comprising a first end, a second end, and a sidewall;

wherein

the damping ring is disposed on each end of the motor body;

the bottom of the damping ring is supported by the mounting bracket;

the damping ring is fixed on the mounting bracket by the locking device;

the first end of the connection housing is connected to a bottom of the motor body;

the second end of connection housing is connected to a top of the control box;

a plurality of heat dissipation holes is arranged on the sidewall of the connection housing;

a plurality of heat dissipation panels is arranged on a top surface of the control box;

a step is arranged on an outer edge of each of the plurality of heat dissipation panels;

the second end of the connection housing is disposed on the step;

the plurality of heat dissipation panels is radially arranged;

outer ends of every two adjacent heat dissipation panels form an air inlet;

a first air channel is formed between every two adjacent heat dissipation panels;

the shaft and the rotor assembly are connected together;

the rotor assembly is disposed inside the stator assembly;

the housing and the stator assembly are connected together;

the front end cover and the rear end cover are disposed on two ends of the housing, respectively;

the shaft is supported by bearings on the front end cover and the rear end cover;

a rear part of the shaft stretches into the connection housing;

a centrifugal fan blade is positioned inside the connection housing on the rear part of the shaft;

an opening is arranged on a bottom of the control box;

the top of the control box is sealed;

a plurality of cone-shaped heat dissipation columns is disposed on a middle part of the top surface of the control box and is surrounded by the plurality of heat dissipation panels;

a circuit board is disposed inside the control box;

a box cover is disposed at the bottom of the control box for covering the opening;

a heat dissipation boss is arranged on the top of the control box;

an IPM module is installed on a bottom surface of the circuit board;

the IPM module is supported by the heat dissipation boss and is fastened by screws;

a convex column is arranged on the top of the control box outside the circuit board;

a power panel is arranged inside the control box beneath the circuit panel; and

the power panel is supported by the convex column and is in electric connection with the circuit board via a lead terminal.

2. The motor of claim 1 , wherein the connection housing, the control box, and the box cover are connected to the rear end cover through screws.

3. The motor of claim 1 , wherein

a plurality of gaps is arranged at a top of the first end of the connection housing; and

the plurality of gaps is imbedded in a support plate.

4. The motor of claim 1 , wherein the plurality of cone-shaped heat dissipation columns is arranged inside the heat dissipation boss.

5. The motor of claim 1 , wherein

a rectifier bridge component and an SCR component are installed on the power panel;

the rectifier bridge component and the SCR component are pressed against an inner surface of a sidewall of the control box by a plurality of press plates; and

the press plates are fastened to the control box by screws.

6. The motor of claim 5 , wherein

a plurality of heat dissipation ribs is arranged outside the rectifier bridge component and the SCR component on an outer surface of the sidewall of the control box; and

the heat dissipation ribs stretch to the top surface of the control box.

7. The motor of claim 5 , wherein a second plurality of ventilation holes is arranged on the sidewall of the control box.

8. The motor of claim 5 , wherein the top surface of the control box is an arc surface.

9. The motor of claim 6 , wherein an outlet hole is arranged outside the power panel and the circuit board on the control box.

10. The motor of claim 9 , wherein a second plurality of ventilation holes is arranged on the sidewall of the control box.

11. The motor of claim 9 , wherein the top surface of the control box is an arc surface.