Motor main body of automobile cooling fan

Abstract

The invention discloses a motor main body of an automobile cooling fan. The motor main body comprises a rotor, a stator, a cooling bracket, a wire box, a wire harness and a rear cover, no electronic control unit is arranged; the wire harness comprises a three-phase line, three terminals of the three-phase line and a shielding line, the stator comprises three stator outgoing lines, and the three stator outgoing lines are in butt-welding connection with the three terminals of the three-phase line in a one-to-one correspondence manner; the three-phase wire and the shielding wire are fixed on the wire box, and finally the motor is led out. The motor has no control part and is directly connected with the domain controller, so that the cost and the weight of the motor are reduced, and economy and convenience are provided for customers.

Description

Technical Field

[0001] The invention discloses an automobile cooling fan, and in particular relates to a motor body of the automobile cooling fan. Background Art

[0002] As the degree of automobile electrification increases, the number of electronic control units (ECUs) in automobiles increases rapidly. Currently, an average of 50-70 ECUs are installed in a car. Each ECU in a car is connected through CAN and LIN buses. Such a large number of ECUs not only brings about very complex wiring harness design, but also poses challenges to logical control. DCU (Domain Control Unit), or automotive domain controller, came into being.

[0003] The domain controller DCU integrates the functions of ECUs with similar and separate functions into a processor hardware platform. It can integrate functions that originally require many ECUs to implement, improve the integration of the system, and coupled with the standardized interface for data interaction, the system has good compatibility. In 2018, the zFAS domain controller developed by Austrian TTTech was used in Audi A8, and Visteon launched the SmartCore domain controller

[0004] The brushless DC motor in the current automotive cooling fan has a built-in ECU to control the operation of the motor and communicate with the main controller of the car. The ECU is not only expensive, but also has poor compatibility when communicating with the main controller of the car. Therefore, removing the built-in ECU and using the domain controller to drive the motor can not only reduce the cost of the motor, but also improve the stability of the system. Summary of the invention

[0005] The purpose of the present invention is to provide a motor body of an automobile cooling fan, which has no control part and is directly connected to a domain controller, thereby reducing the cost and weight of the motor and providing economy and convenience to customers.

[0006] The technical solution of the present invention is: a motor body of an automobile cooling fan, comprising a rotor, a stator, a cooling bracket, a wiring box, a wiring harness and a rear cover;

[0007] No electronic control unit;

[0008] The wiring harness includes three-phase wires, three terminals of the three-phase wires and a shielding wire, and the stator includes three stator lead wires, and the three stator lead wires are connected to the three terminals of the three-phase wires by one-to-one contact welding;

[0009] The three-phase wires and the shielding wire are fixed on the wire box and finally led out of the motor.

[0010] Furthermore, the wire box includes a base, a connector and a wire pressing plate;

[0011] A wiring harness fixing structure is arranged on the base, and the wiring harness fixing structure includes four wire grooves arranged at one end of the base for placing the three-phase wires and shielding wires. After the wire pressing plate is connected to the base through a connector, the three-phase wires and shielding wires placed in the wire grooves can be fixed.

[0012] Furthermore, anti-slip teeth are arranged in the wire trough.

[0013] Furthermore, the wiring harness fixing structure also includes three embedding grooves, which are arranged on the other end of the base opposite to the wire groove; the three terminals of the three-phase wires are fixed in the three embedding grooves in a one-to-one correspondence.

[0014] Furthermore, the base is also provided with a wire harness track limiting structure located between the embedding groove and the wire groove, and the wire harness track limiting structure includes a positioning embedding groove, a positioning column and a positioning hook capable of limiting the position of the three-phase line.

[0015] Furthermore, the heat dissipation bracket is provided with a heat dissipation bracket sealing groove with a notch, the wire box is fixed in the heat dissipation bracket sealing groove, and one end of the wire box with the wire groove is placed in the notch of the heat dissipation bracket sealing groove;

[0016] The wire box is provided with a wire box sealing groove, and the wire box sealing groove is connected with the heat dissipation bracket sealing groove to form a complete closed-loop sealing groove, which can improve the waterproof level of the motor.

[0017] The beneficial effects of the present invention are: providing a motor body of an automobile cooling fan, the motor has no control part, is directly connected to a domain controller, reduces the cost and weight of the motor, and provides economy and convenience for customers.

[0018] This patent directly welds the motor stator lead wires and the wiring harness together, and there is no need to embed metal connecting plates in the wire box. The process is simple and the cost is low.

[0019] The patented heat dissipation bracket and the wire box are provided with sealing grooves to improve the waterproof level of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the exploded diagram of the motor;

[0021] Figure 2 This is the appearance of the motor;

[0022] Figure 3 This is the motor structure diagram;

[0023] Figure 4 This is the structural diagram of the wiring harness and the wiring box;

[0024] Figure 5 This is the structure diagram of the wire box;

[0025] Figure 6 This is a structural diagram of the heat dissipation bracket.

[0026] In the figure: 1 is a rotor, 2 is a stator, 3 is a heat dissipation bracket, 4 is a wire box, 5 is a wire harness, 6 is a back cover, 21 is a stator lead wire, 31 is a screw hole for fixing the back cover, 32 is a screw hole for fixing the shielded wire, 33 is a screw hole for fixing the wire box, 34 is a screw hole for fixing the wire box, 35 is a notch, 36 is a sealing groove for the heat dissipation bracket, 41 is a base, 42 is a connector, 43 is a wire pressing plate, 411 is an embedded groove, 412 is a positioning embedded groove, 413 is a positioning column, 414 is a positioning hook, 415 is a wire trough, 416 is an anti-slip tooth, 431 is a wire box sealing groove, 51 is a terminal, 52 is a 3-phase wire, and 53 is a shielded wire. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like Figure 1 , 2 As shown in Figure 3, a motor body of a car cooling fan includes a rotor 1, a stator 2, a heat dissipation bracket 3, a wiring box 4, a wiring harness 5 and a rear cover 6. There is no electronic control unit, and it is directly connected to the domain controller, which reduces the cost and weight of the motor and provides economy and convenience for customers. The wiring harness 5 includes a 3-phase line 52, 3 terminals 51 of the 3-phase line 52 and a shielding wire 53. The stator 2 includes 3 stator lead wires 21, and the 3 stator lead wires 21 are connected to the 3 terminals 51 of the 3-phase line 52 by one-to-one welding. There is no need to embed a metal connecting piece in the wiring box, the process is simple, and the cost is low. The 3-phase line 52 and the shielding wire 53 are fixed on the wiring box 4 and finally led out of the motor.

[0029] like Figure 4 , 5 As shown, the wire box 4 includes a base 41 , a connector 42 and a wire pressing plate 43 .

[0030] The base 41 is provided with a wire harness fixing structure, which includes four wire grooves 415 provided at one end of the base 41 for placing the three-phase wires 52 and the shielding wires 53, and the wire grooves 415 are provided with anti-slip teeth 416. After the wire pressing plate 43 is connected to the base 41 through the connector 42, the three-phase wires 52 and the shielding wires 53 placed in the wire grooves 415 can be fixed.

[0031] The wiring harness fixing structure further includes three embedding grooves 411 , which are arranged at the other end of the base 41 opposite to the wire groove 415 . The three terminals 51 of the three-phase wires 52 are fixed in the three embedding grooves 411 in a one-to-one correspondence.

[0032] The base 41 is also provided with a wire harness track limiting structure located between the embedding groove 411 and the wire groove 415 . The wire harness track limiting structure includes a positioning embedding groove 412 , a positioning column 413 and a positioning hook 414 capable of limiting the position of the three-phase line 52 .

[0033] like Figure 6 As shown, the heat dissipation bracket 3 is provided with a heat dissipation bracket sealing groove 36 with a notch 35, the wire box 4 is fixed in the heat dissipation bracket sealing groove 36, and one end of the wire box 4 with the wire groove 415 is placed in the notch 35 of the heat dissipation bracket sealing groove 36. The wire box 4 is provided with a wire box sealing groove 431, and the wire box sealing groove 431 is connected with the heat dissipation bracket sealing groove 36 to form a complete closed-loop sealing groove. The waterproof level of the motor can be improved.

[0034] The heat dissipation bracket 3 is also provided with a screw hole 31 for fixing the rear cover, a screw hole 32 for fixing the shielding wire, and screw holes 33 and 34 for fixing the wire box 4.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A motor body of an automobile cooling fan, comprising a rotor (1), a stator (2), a cooling bracket (3), a wiring box (4), a wiring harness (5) and a rear cover (6); Features: No electronic control unit; The wiring harness (5) comprises three-phase wires (52), three terminals (51) of the three-phase wires (52) and a shielding wire (53); the stator (2) comprises three stator lead wires (21); the three stator lead wires (21) are connected to the three terminals (51) of the three-phase wires (52) by one-to-one contact welding; The three-phase wires (52) and the shielding wire (53) are fixed on the wire box (4) and finally led out of the motor.

2. The motor body of the automobile cooling fan according to claim 1, characterized in that: The wire box (4) comprises a base (41), a connector (42) and a wire pressing plate (43); A wire harness fixing structure is provided on the base (41), and the wire harness fixing structure comprises four wire grooves (415) provided at one end of the base (41) and used for placing the three-phase wires (52) and the shielding wires (53). After the wire pressing plate (43) is connected to the base (41) via a connector (42), the three-phase wires (52) and the shielding wires (53) placed in the wire grooves (415) can be fixed.

3. The motor body of the automobile cooling fan according to claim 2, characterized in that: Anti-slip teeth (416) are arranged in the wire groove (415).

4. The motor body of the automobile cooling fan according to claim 2, characterized in that: The wiring harness fixing structure further comprises three embedding grooves (411), wherein the embedding grooves (411) are arranged at the other end of the base (41) opposite to the wire groove (415); the three terminals (51) of the three-phase wires (52) are fixed in the three embedding grooves (411) in a one-to-one correspondence.

5. The motor body of the automobile cooling fan according to claim 4, characterized in that: The base (41) is also provided with a wire harness track limiting structure located between the embedding groove (411) and the wire groove (415), and the wire harness track limiting structure comprises a positioning embedding groove (412) capable of limiting the position of the three-phase wire (52), a positioning column (413) and a positioning hook (414).

6. The motor body of the automobile cooling fan according to claim 1, characterized in that: The heat dissipation bracket (3) is provided with a heat dissipation bracket sealing groove (36) with a notch (35); the wire box (4) is fixed in the heat dissipation bracket sealing groove (36), and one end of the wire box (4) with the wire groove (415) is placed in the notch (35) of the heat dissipation bracket sealing groove (36); The wire box (4) is provided with a wire box sealing groove (431), and the wire box sealing groove (431) is connected with the heat dissipation bracket sealing groove (36) to form a complete closed-loop sealing groove.

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