Process for welding stator punching sheet of high-efficiency permanent magnet direct-current synchronous motor in electric vehicle
A permanent magnet DC, synchronous motor technology, applied in welding equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of increasing motor loss, reducing motor efficiency, narrowing the yoke, etc., to achieve rapid welding and improve motor efficiency. , the effect of reducing weight
Active Publication Date: 2013-08-21
CHANGZHOU YUCHENG FUTONG MOTOR CO LTD
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Problems solved by technology
[0002] At present, electric vehicles require light weight, high efficiency, and high power, so the weight of electric vehicle motors is also required to be as small as possible. In the production of conventional electric vehicle motor stator punching, such as Figure 5 Perforated in the stator sheet and riveted with rivets as shown; or as shown Image 6 , 7 Tab process as shown; or as Figure 8 , 9 For the argon arc welding process shown above, the above conventional processes all need to punch the stator sheet or cut the yoke, which will cause the yoke to become narrower, which will have a great impact on the magnetic circuit of the motor stator and make the magnetic density of the motor stator yoke Correspondingly, the reluctance increases, which increases the loss of the motor and reduces the efficiency of the motor
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[0021] The following embodiments are given in conjunction with the accompanying drawings to further describe the welding process of the electric vehicle permanent magnet DC synchronous motor stator punching sheet of the present invention in detail.
[0022] see figure 1 , 2 , 3, 4, the welding process of the stator stamping sheet of the high-efficiency permanent magnet DC synchronous motor for electric vehicles, the innovation point is that it includes the following processes in turn:
[0023] a. Put the motor stator punching piece 1 on the sleeve 2-3 with external thread provided on the left splint 2-1 of a punching piece pressing tool 2, and then put the right splint with internal thread and polygonal shape 2-2 is connected with the casing thread of the left splint 2-1, so that the motor stator punching piece 1 is clamped and pressed between the left and right splints, and the pressing force of the clamping is adjusted through the connecting thread to make the motor stator...
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The invention provides a process for welding a stator punching sheet of a high-efficiency permanent magnet direct-current synchronous motor in an electric vehicle, which comprises the following processes of: sleeving the motor stator punching sheet in a punching sheet compressing tool; arranging the punching sheet compressing tool and the motor stator punching sheet on a laser welding tool; and arranging a welding head of a laser welder above a center line of the laser welding tool to perform laser welding on the peripheral wall of the motor stator punching sheet. In the motor stator punchingsheet manufactured by the welding process, a yoke part of the stator punching sheet is not damaged basically, namely the yoke magnetic flux of a motor stator cannot be increased, so the loss of the motor is reduced, the efficiency of the motor is improved, and the weight of the motor is relieved. Simultaneously, due to the simple laser welding process, the damage degree to the stator is extremelylow, the welding is quick, the surface of the stator punching sheet is smooth and the welding firmness is high. Therefore, the welding process is a new process for welding the stator punching sheet of the high-efficiency motor.
Description
technical field [0001] The invention belongs to the manufacturing technology of motor stators, in particular to a welding process for stator punching sheets of high-efficiency permanent magnet DC synchronous motors of electric vehicles. Background technique [0002] At present, electric vehicles require light weight, high efficiency, and high power, so the weight of electric vehicle motors is also required to be as small as possible. In the production of conventional electric vehicle motor stator punching, such as Figure 5 Perforated in the stator sheet and riveted with rivets as shown; or as shown Figure 6 , 7 tab process as shown; or as Figure 8 , 9 For the argon arc welding process shown above, the above conventional processes all need to punch the stator sheet or cut the yoke, which will cause the yoke to become narrower, which will have a great impact on the magnetic circuit of the motor stator and make the magnetic density of the motor stator yoke Correspondingly...
Claims
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IPC IPC(8): B23K26/24B23K26/42B23K26/70
Inventor 邱国平壮正义沈迎蒋端各王韶华沈金华熊泽
Owner CHANGZHOU YUCHENG FUTONG MOTOR CO LTD