Hub stator structure with concentrated coils and split and surrounded windings

Abstract

The utility model relates to a hub stator structure with concentrated coils and split and surrounded windings, which belongs to the technical field of motors and comprises a stator and windings, a plurality of teeth are formed on the stator, a winding groove is arranged between two adjacent teeth, each winding is at least provided with two coils, each coil is respectively provided with a head outgoing line and a tail outgoing line, and the head outgoing line and the tail outgoing line are respectively connected with the stator. The utility model aims to provide a winding structure which is reasonable in structure, ensures the slot fullness rate, simultaneously ensures the winding efficiency, and simultaneously ensures the winding quality, the winding structure is simple, the winding structure is compact, the winding structure is simple, the winding structure is compact, and the winding structure is suitable for large-scale popularization and application. The wheel hub stator structure with the concentrated coil windings split and surrounded can improve the power of a wheel hub motor.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and particularly relates to a hub stator structure with a coil concentrated winding that is split and surrounded. Background Art

[0002] The winding of the current electric vehicle hub motor is a multi-wire parallel structure, which originated around 2000. Because automated winding equipment was extremely rare at the time, the masters of electric vehicle motor factories could only use the traditional process of manual wire embedding to produce motors. In addition, multi-wire parallel winding is simple to learn and operate, and has been widely used to this day.

[0003] Since the operating voltage of the electric vehicle hub motor is low and the number of winding turns is small, the windings of each phase on the corresponding stator teeth are electrically connected in series. Therefore, on the same base, the rated speed of the motor is proportional to the number of winding turns. After changing one turn of the winding, the motor speed variation range is large. Therefore, in order to reduce the variation range of the motor speed, many motor manufacturers have to reduce the number of winding turns on some stator teeth (we call it unequal number of turns winding). The result is that the motor power decreases, the starting torque decreases, the motor pulsation torque component increases, the working noise increases, the motor working stability deteriorates and other adverse consequences.

[0004] Due to the low number of turns in the traditional series winding structure, it is difficult to achieve an orderly and evenly arranged winding structure using multiple wires and parallel winding processes even through automated equipment. As a result, the stator slot fill rate cannot be effectively improved and the power of the hub motor is insufficient. Utility Model Content

[0005] The utility model aims to provide a hub stator structure with a split and surrounding coil concentrated winding, which has a reasonable structure and can improve the power of the hub motor while ensuring the slot filling rate.

[0006] The purpose of this utility model is achieved in this way:

[0007] A hub stator structure with a coil concentrated winding split and wrapped around it includes a stator and a winding. The stator is formed with multiple teeth, with winding slots between two adjacent teeth. Each winding is provided with at least two coils, each coil is provided with a head lead wire and a tail lead wire. The head lead wires of two or more coils in the same winding are interconnected, and the tail lead wires of two or more coils are interconnected. The coil is arranged around at least two teeth and is located in the winding slot.

[0008] In the above-mentioned hub-stator structure with split and surrounding concentrated coil windings, the number of teeth in each winding is two, three, four, five or six, and the number of coils is two or three.

[0009] In the hub stator structure with the concentrated coil winding being split and wound around the above-mentioned coil, each coil in the same winding has the same total number of turns wound around the teeth.

[0010] In the hub stator structure with the concentrated coil winding being split and wound around the hub, each coil in the same winding has different numbers of turns wound around different teeth.

[0011] In the above-mentioned hub stator structure with split concentrated coil windings, the windings are three-phase windings and include a U-phase winding, a V-phase winding and a W-phase winding. The U-phase winding, the V-phase winding and the W-phase winding are arranged in sequence, and the V-phase winding is located between the U-phase winding and the W-phase winding.

[0012] In the hub stator structure with the concentrated coil windings being split and surrounding, the head leads of the windings of the same phase are connected to each other, and the tail leads of the windings of the same phase are connected to each other.

[0013] In the above-mentioned hub stator structure with split and surrounding concentrated coil windings, the number of the winding slots is a multiple of three.

[0014] In the above-mentioned hub stator structure with split and surrounding concentrated coil windings, the number of the winding slots is 18, 24, 27, 36, 48, 54, 60, 63, or 72.

[0015] In the above-mentioned hub-stator structure with split and surrounding concentrated coil windings, the teeth are located on the inner side or the outer side of the stator.

[0016] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0017] The winding of the utility model is formed by at least two coils connected in parallel. The coils are wound on at least two teeth of the stator. The total number of turns on each stator tooth is consistent, ensuring the slot full rate. The windings of the same phase are connected in parallel again, which can increase the corresponding power, and the speed and overload capacity of the motor are stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the schematic diagrams of the stator structure of the first embodiment of the present utility model.

[0019] Figure 2 This is the second schematic diagram of the stator structure of the first embodiment of the present utility model.

[0020] Figure 3 This is one of the schematic diagrams of the winding structure of the utility model.

[0021] Figure 4 This is the second schematic diagram of the winding structure of the present utility model.

[0022] Figure 5 This is the third schematic diagram of the winding structure of the present utility model.

[0023] Figure 6 This is the fourth schematic diagram of the winding structure of the present utility model.

[0024] Figure 7 This is the fifth schematic diagram of the winding structure of the present utility model.

[0025] Figure 8 This is the sixth schematic diagram of the winding structure of the present utility model.

[0026] Figure 9 This is the seventh schematic diagram of the winding structure of the present utility model.

[0027] Figure 10 This is the eighth schematic diagram of the winding structure of the present utility model.

[0028] Figure 11 This is the ninth schematic diagram of the winding structure of the present utility model.

[0029] 1-stator; 11-tooth; 12-winding slot; 111-tooth one; 112-tooth two; 113-tooth three; 211-coil one; 212-coil two; 213-coil three; 214-coil four; 215-coil five; 216-coil six. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to specific embodiments of the present invention:

[0031] like Figure 1 and Figure 2 As shown: A hub stator structure with a coil concentrated winding split and wrapped around it includes a stator 1 and a winding. The stator 1 is formed with multiple teeth 11, and a winding slot 12 is provided between two adjacent teeth 11. Each winding is provided with at least two coils, and each coil is provided with a head lead wire and a tail lead wire. The head lead wires of two or more coils in the same winding are interconnected, and the tail lead wires of two or more coils are interconnected. The coil is arranged around at least two teeth 11 and is located in the winding slot 12. With this structure, the number of coils is greater than that of existing designs, which can improve the slot fill rate while ensuring that the motor has a higher speed and stronger overload capacity.

[0032] In the above-mentioned hub-stator structure with split and surrounding concentrated coil windings, the number of teeth in each winding is two, three, four, five or six, and the number of coils is two or three.

[0033] Specifically, such as Figure 3As shown, when the number of coils in the winding is two and the number of teeth is two, the coils are coil one 211 and coil two 212, the two teeth are tooth one 111 and tooth two 112, and the number of turns of coil one around tooth one is A, the number of turns of coil one around tooth two is B, the number of turns of coil two around tooth one is B, and the number of turns of coil two around tooth two is A, and A is at least 1 and at most 200, and B is at least 1 and at most 200;

[0034] like Figure 4 As shown, when the number of coils in the winding is two and the number of teeth is three, the coils are coil one 211 and coil two 212, the three teeth are tooth one 111, tooth two 112 and tooth three 113, and the number of turns of coil one on tooth one is A, the number of turns of coil one on tooth two is B, the number of turns of coil one on tooth three is C, the number of turns of coil two on tooth one is C, the number of turns of coil two on tooth two is A, the number of turns of coil two on tooth three is B, and A is at least 1 and a maximum of 200, B is at least 1 and a maximum of 200, and C is at least 1 and a maximum of 200.

[0035] like Figure 5 As shown, when the number of coils in the winding is two and the number of teeth is four, the coils are coil one 211 and coil two 212, the four teeth are tooth one 111, tooth two 112, tooth three 113 and tooth four 114, and the number of turns of coil one around tooth one is A, the number of turns of coil one around tooth two is B, the number of turns of coil one around tooth three is C, the number of turns of coil one around tooth four is D, the number of turns of coil two around tooth one is D, the number of turns of coil two around tooth two is C, the number of turns of coil two around tooth three is B, the number of turns of coil two around tooth four is A, and A is at least 1 and at most 200, B is at least 1 and at most 200, C is at least 1 and at most 200, and D is at least 1 and at most 200;

[0036] like Figure 6 As shown, when the number of coils in the winding is two and the number of teeth is five, the coils are coil one 211 and coil two 212, the five teeth are tooth one 111, tooth two 112, tooth three 113, tooth four 114 and tooth five 115, and the number of turns of coil one around tooth one is A, the number of turns of coil one around tooth two is B, the number of turns of coil one around tooth three is C, the number of turns of coil one around tooth four is D, the number of turns of coil one around tooth five is E, the number of turns of coil two around tooth one is E, the number of turns of coil two around tooth two is D, the number of turns of coil two around tooth three is A, the number of turns of coil two around tooth four is B, the number of turns of coil two around tooth five is C, and A is at least 1 and at most 200, B is at least 1 and at most 200, C is at least 1 and at most 200, D is at least 1 and at most 200, and E is at least 1 and at most 200;

[0037] like Figure 7 As shown, when the number of coils in the winding is two and the number of teeth is six, the coils are coil one 211 and coil two 212, the six teeth are tooth one 111, tooth two 112, tooth three 113, tooth four 114, tooth five 115 and tooth six 116, and the number of turns of coil one on tooth one is A, the number of turns of coil one on tooth two is B, the number of turns of coil one on tooth three is C, the number of turns of coil one on tooth four is D, the number of turns of coil one on tooth five is E, and the number of turns of coil one on tooth six is The number of turns of coil 2 on tooth 1 is F, the number of turns of coil 2 on tooth 2 is E, the number of turns of coil 2 on tooth 3 is D, the number of turns of coil 2 on tooth 4 is C, the number of turns of coil 2 on tooth 5 is B, and the number of turns of coil 2 on tooth 6 is A, and A is at least 1 and a maximum of 200, B is at least 1 and a maximum of 200, C is at least 1 and a maximum of 200, D is at least 1 and a maximum of 200, E is at least 1 and a maximum of 200, and F is at least 1 and a maximum of 200;

[0038] like Figure 8 As shown, when the number of coils in the winding is three and the number of teeth is three, the coils are coil one 211, coil two 212 and coil three 213, the three teeth are tooth one 111, tooth two 112 and tooth three 113, and the number of turns of coil one on tooth one is A, the number of turns of coil one on tooth two is B, the number of turns of coil one on tooth three is C, the number of turns of coil two on tooth one is C, the number of turns of coil two on tooth two is A, the number of turns of coil two on tooth three is B, the number of turns of coil three on tooth one is B, the number of turns of coil three on tooth two is C, the number of turns of coil three on tooth three is A, and A is at least 1 and at most 200, B is at least 1 and at most 200, and C is at least 1 and at most 200;

[0039] like Figure 9 As shown, when the number of coils in the winding is three and the number of teeth is four, the coils are coil one 211, coil two 212 and coil three 213, the four teeth are tooth one 111, tooth two 112, tooth three 113 and tooth four 114, and the number of turns of coil one around tooth one is A, the number of turns of coil one around tooth two is B, the number of turns of coil one around tooth three is C, the number of turns of coil one around tooth four is D, and the number of turns of coil two around tooth one is D, the number of turns of coil 2 wound on tooth 2 is C, the number of turns of coil 2 wound on tooth 3 is B, the number of turns of coil 2 wound on tooth 4 is A, the number of turns of coil 3 wound on tooth 1 is C, the number of turns of coil 3 wound on tooth 2 is A, the number of turns of coil 3 wound on tooth 3 is D, the number of turns of coil 3 wound on tooth 4 is B, and A is at least 1 and a maximum of 200, B is at least 1 and a maximum of 200, C is at least 1 and a maximum of 200, and D is at least 1 and a maximum of 200;

[0040] like Figure 10As shown, when the number of coils in the winding is three and the number of teeth is five, the coils are coil one 211, coil two 212 and coil three 213, the five teeth are tooth one 111, tooth two 112, tooth three 113, tooth four 114 and tooth five 115, and the number of turns of coil one on tooth one is A, the number of turns of coil one on tooth two is B, the number of turns of coil one on tooth three is C, the number of turns of coil one on tooth four is D, the number of turns of coil one on tooth five is E, the number of turns of coil two on tooth one is E, and the number of turns of coil two on tooth two is The number of turns of coil 2 is D, the number of turns of coil 2 wound on tooth 3 is A, the number of turns of coil 2 wound on tooth 4 is B, the number of turns of coil 2 wound on tooth 5 is C, the number of turns of coil 3 wound on tooth 1 is B, the number of turns of coil 3 wound on tooth 2 is C, the number of turns of coil 3 wound on tooth 3 is A, the number of turns of coil 3 wound on tooth 4 is E, the number of turns of coil 3 wound on tooth 5 is D, and A is at least 1 and a maximum of 200, B is at least 1 and a maximum of 200, C is at least 1 and a maximum of 200, D is at least 1 and a maximum of 200, and E is at least 1 and a maximum of 200;

[0041] like Figure 11 As shown, when the number of coils in the winding is three and the number of teeth is six, the coils are coil one 211, coil two 212 and coil three 213, the six teeth are tooth one 111, tooth two 112, tooth three 113, tooth four 114, tooth five 115 and tooth six 116, and the number of turns of coil one on tooth one is A, the number of turns of coil one on tooth two is B, the number of turns of coil one on tooth three is C, the number of turns of coil one on tooth four is D, the number of turns of coil one on tooth five is E, the number of turns of coil one on tooth six is F, the number of turns of coil two on tooth one is F, the number of turns of coil two on tooth two is E, and the number of turns of coil two on tooth The number of turns of coil 2 on tooth 3 is D, the number of turns of coil 2 on tooth 4 is C, the number of turns of coil 2 on tooth 5 is B, the number of turns of coil 2 on tooth 6 is A, the number of turns of coil 3 on tooth 1 is C, the number of turns of coil 3 on tooth 2 is A, the number of turns of coil 3 on tooth 3 is B, the number of turns of coil 3 on tooth 4 is E, the number of turns of coil 3 on tooth 5 is F, and the number of turns of coil 3 on tooth 6 is D, and A is at least 1 and at most 200, B is at least 1 and at most 200, C is at least 1 and at most 200, D is at least 1 and at most 200, E is at least 1 and at most 200, and F is at least 1 and at most 200;

[0042] In the hub stator structure with split concentrated winding coils, each coil in the same winding has the same total number of turns wound around the teeth 11. Specifically, this is to ensure power and power stability. Each coil in the same winding has different numbers of turns wound around different teeth 11. Specifically, this allows the number of turns to be adjusted according to the different needs of the motor.

[0043] In the above-mentioned hub stator structure with split and surrounding coil concentrated windings, the windings are three-phase windings and include a U-phase winding, a V-phase winding and a W-phase winding. The U-phase winding, the V-phase winding and the W-phase winding are arranged in sequence, the V-phase winding is located between the U-phase winding and the W-phase winding, the head lead wires of the windings of the same phase are connected to each other, and the tail lead wires of the windings of the same phase are connected to each other. Specifically, this can increase the speed of the motor and improve the overload capacity of the motor.

[0044] In the above-mentioned hub-stator structure with the concentrated coil winding split and wrapped around, the number of the winding slots 12 is a multiple of 3. Specifically, this can adapt to most hub stators.

[0045] In the above-mentioned hub-stator structure with split and surrounding concentrated coil windings, the number of the winding slots 12 is 18, 24, 27, 36, 48, 54, 60, 63, or 72.

[0046] In the above-mentioned hub-stator structure with split and surrounding concentrated coil windings, the teeth 11 are located on the inner side or the outer side of the stator 1 .

[0047] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hub stator structure with split and surrounding coil concentrated windings, characterized by: The invention comprises a stator (1) and a winding, wherein a plurality of teeth (11) are formed on the stator (1), a winding slot (12) is provided between two adjacent teeth (11), each winding is provided with at least two coils, each coil is provided with a head lead wire and a tail lead wire, the head lead wires of two or more coils in the same winding are connected to each other, and the tail lead wires of two or more coils are connected to each other, and the coils are arranged around at least two teeth (11) and located in the winding slot (12).

2. The hub-stator structure with split and surrounding concentrated coil windings according to claim 1, characterized in that: The number of teeth in each winding is two, three, four, five or six, and the number of coils is two or three.

3. The hub-stator structure with split and surrounding concentrated coil windings according to claim 1, characterized in that: Each coil in the same winding has the same total number of turns wound around the teeth (11).

4. The hub-stator structure with split and surrounding concentrated coil windings according to claim 2, characterized in that: Each coil in the same winding has different numbers of turns wound around different teeth (11).

5. The hub-stator structure with split and surrounding concentrated coil windings according to claim 1, characterized in that: The winding is a three-phase winding and includes a U-phase winding, a V-phase winding and a W-phase winding. The U-phase winding, the V-phase winding and the W-phase winding are arranged in sequence, and the V-phase winding is located between the U-phase winding and the W-phase winding.

6. The hub stator structure with split and surrounding concentrated coil windings according to claim 5, characterized in that: The head leads of the windings of the same phase are connected to each other, and the tail leads of the windings of the same phase are connected to each other.

7. The hub-stator structure with split and surrounding concentrated coil windings according to claim 1, 2, 3, 4, 5, or 6, characterized in that: The number of the winding grooves (12) is a multiple of 3.

8. The hub stator structure with split and surrounding concentrated coil windings according to claim 7, characterized in that: The number of the winding slots (12) is 18, 24, 27, 36, 48, 54, 60, 63 or 72.

9. The hub stator structure with split and surrounding concentrated coil windings according to claim 7, characterized in that: The teeth (11) are located on the inner side or the outer side of the stator (1).

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