A lead wire and a connection structure thereof

Abstract

The application discloses a lead-out wire and a wiring structure thereof, and relates to the technical field of lead-out wires, which comprises a wire and a terminal, one end of the wire is connected with a motor body, the other end of the wire is connected with the terminal, the wire comprises a plurality of wire bodies and a plurality of exposed areas, the wire bodies are connected through connecting terminals, a plurality of the wire bodies are provided with a plurality of exposed areas, the diameters of the plurality of wire bodies are different, and the plurality of exposed areas are arranged alternately with the connecting terminals. The application provides a lead-out wire and a wiring structure thereof, solves the optimal diameter of the lead-out wire between terminals, the lead-out wire has a plurality of terminal contact areas, the diameters of the wires between the different contact areas are controlled, the diameters of the wires between the terminals are different, and the production cost of the lead-out wire is effectively reduced under the condition of ensuring the safety of the lead-out wire.

Description

Technical Field

[0001] This invention relates to the field of lead wire technology, and in particular to a lead wire and its wiring structure. Background Technology

[0002] With rising copper prices, the cost pressure on compressors and air conditioning systems is increasing. Aluminum wire, while maintaining quality, can achieve the energy efficiency of copper wire, making it a key research area for various companies. Aluminum wire motors are crucial components of compressors and air conditioners. Currently, common aluminum wire motors have three copper wire leads, each connected to the main and auxiliary phase windings inside the motor via single-to-single terminal connections, resulting in fewer after-sales malfunctions. However, for special motors, such as three-phase, X-power, and R-power aluminum wire motors, the compressor's main and auxiliary phase windings consist of multiple wires. Due to the flexibility of aluminum wire, when there are many aluminum wires, connecting them to the copper wires via terminals can easily cause deformation and poor riveting quality. This leads to increased current per unit cross-sectional area during compressor operation, causing localized high current in the aluminum wires, potentially burning out the leads and affecting the motor's lifespan.

[0003] To address the aforementioned lead wire wiring issue, the current solution involves providing lead wires with conductor and terminal grooves, and multiple exposed areas. These exposed areas are connected to windings via terminals, each consisting of a single aluminum wire and a single copper wire. While this lead wire structure effectively reduces deformation of the aluminum enameled wire during terminal connections, the uniform wire diameter across all terminals, after assembly, leads to an overall larger wire diameter due to the sum of the currents in each branch. This increases production costs. Therefore, the lead wire structure needs improvement to reduce production costs. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a lead wire and its wiring structure to solve the problems mentioned in the background art, solve the optimal wire diameter of the lead wire between each terminal, and reduce the production cost of the lead wire while ensuring safety.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a lead wire connection structure, including a wire and a terminal, one end of the wire is connected to the motor body, the other end of the wire is connected to the terminal, the wire includes several wire body segments and several exposed areas, the wire body segments are connected to each other through connecting terminals, the several wire body segments are provided with several exposed areas, the wire diameters of the several wire body segments are different, and the several exposed areas and connecting terminals are arranged alternately.

[0006] As a further improvement of the present invention: the conductors of several segments are copper enameled wire and aluminum enameled wire, the copper enameled wire has a single copper wire inside, the aluminum enameled wire has a single aluminum wire inside, and the copper enameled wire and the aluminum enameled wire are connected by connecting terminals.

[0007] As a further improvement of the present invention: the copper enameled wire and the aluminum enameled wire are arranged alternately on the conductor.

[0008] As a further improvement of the present invention: one end of the connecting terminal is connected to a single copper wire, and the other end of the connecting terminal is connected to a single aluminum wire.

[0009] As a further improvement of the present invention: the several sections of the conductor body are sequentially provided with a first conductor body diameter D1, a second conductor body diameter D2, a third conductor body diameter D3, and so on up to the nth conductor body diameter Dn.

[0010] As a further improvement of the present invention: the diameter D1 of the first conductor is disposed on the side closer to the motor body, and the diameter Dn of the nth conductor is disposed on the side closer to the terminal.

[0011] As a further improvement of the present invention: the diameter D2 of the second conductor body is greater than the diameter D1 of the first conductor body, the diameter D3 of the third conductor body is greater than the diameter D2 of the second conductor body, and the diameter Dn of the nth conductor body is greater than the diameter Dn-1 of the (n-1)th conductor body.

[0012] As a further improvement of the present invention: the current through the first conductor diameter D1 is I1, the current through the second conductor diameter D2 is I2, the current through the third conductor diameter D3 is I3, and the current through the nth conductor diameter Dn is In, wherein I1 = I2 = I3 = In.

[0013] As a further improvement of the present invention: the current density through the first conductor diameter D1 is p1, the current density through the second conductor diameter D2 is p2, the current density through the third conductor diameter D3 is p3, and the current density through the nth conductor diameter Dn is pn, where p1 = p2 = p3 = pn.

[0014] The wire diameter current density p = I / S, where I is the current flowing through the wire and S is the cross-sectional area of ​​the wire. Therefore, the wire diameter current density p1 of the first connection terminal between the first wire diameter D1 and the second wire diameter D2 is I1 / pi*(D1^2) / 4, the wire diameter current density p2 of the second connection terminal between the second wire diameter D2 and the third wire diameter D3 is (I1+I2) / pi*(D2^2) / 4, the wire diameter current density p3 of the third connection terminal between the third wire diameter D3 and the fourth wire diameter D4 is (I1+I2+I3) / pi*(D3^2) / 4, and so on. The wire diameter current density pn of the nth connection terminal between the (n-1)th wire diameter Dn-1 and the nth wire diameter Dn is (I1+I2+I3+...+n-1+n) / pi*(Dn^2) / 4.

[0015] As a further improvement of the present invention: the lead wire wiring structure is provided with a plurality of lead wires, and the plurality of lead wires are respectively connected to one end of the motor body.

[0016] As a further improvement of the present invention: several sections of the exposed area are respectively connected to the windings of the motor body.

[0017] A lead wire, comprising a lead wire wiring structure as described in any of the above claims.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the present invention provides a lead wire and its wiring structure, which solves the problem of the optimal wire diameter of the lead wire between each terminal. The lead wire has multiple terminal contact areas. By controlling the wire diameter between different contact areas, the wire diameter between each terminal is different. While ensuring the safety of the lead wire, the production cost of the lead wire is effectively reduced. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the motor structure according to Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the lead wire structure according to Embodiment 1 of the present invention;

[0021] Figure 3 This is a schematic diagram of the lead wire structure according to Embodiment 2 of the present invention;

[0022] Figure 4 This is a schematic diagram of the lead wire structure for conventional technology.

[0023] Explanation of the labels in the diagram:

[0024] 1. Motor body; 2. Lead wire; 21. Wire; 22. Terminal; 23. Wire body; 24. Exposed area; 3. Connecting terminal; 41. First wire body; 42. Second wire body; 43. Third wire body; 51. First connecting terminal; 52. Second connecting terminal; 53. Third connecting terminal. Detailed Implementation

[0025] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0026] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The present invention will now be further described in conjunction with the accompanying drawings and embodiments:

[0030] Implementation Case 1:

[0031] like Figures 1 to 2As shown, this embodiment provides a lead wire connection structure, including a wire 21 and a terminal 22. One end of the wire 21 is connected to the motor body 1, and the other end of the wire 21 is connected to the terminal 22. The wire 21 includes several wire body segments 23 and several exposed areas 24. The wire body segments 23 are connected to each other through connecting terminals 3. Several exposed areas 24 are provided on several wire body segments 23. The wire diameters of the several wire body segments 23 are different, and the several exposed areas 24 are arranged alternately with the connecting terminals 3.

[0032] The conductors 23 are made of copper enameled wire and aluminum enameled wire. Each copper enameled wire has a single copper wire inside, and each aluminum enameled wire has a single aluminum wire inside. The copper enameled wire and the aluminum enameled wire are connected by a connecting terminal 3.

[0033] The copper enameled wire and the aluminum enameled wire are arranged alternately on the conductor 21.

[0034] One end of the connecting terminal 3 is connected to a single copper wire, and the other end of the connecting terminal 3 is connected to a single aluminum wire.

[0035] The conductor body 23 of several segments is provided with a first conductor body diameter D1, a second conductor body diameter D2, a third conductor body diameter D3, and so on up to the nth conductor body diameter Dn.

[0036] The first conductor diameter D1 is located on the side closer to the motor body, and the nth conductor diameter Dn is located on the side closer to the terminal.

[0037] The diameter of the second conductor body D2 is greater than the diameter of the first conductor body D1, the diameter of the third conductor body D3 is greater than the diameter of the second conductor body D2, and the diameter of the nth conductor body Dn is greater than the diameter of the (n-1)th conductor body Dn-1.

[0038] The current through the first conductor diameter D1 is I1, the current through the second conductor diameter D2 is I2, the current through the third conductor diameter D3 is I3, and the current through the nth conductor diameter Dn is In, where I1 = I2 = I3 = In.

[0039] The current density through the first conductor diameter D1 is p1, the current density through the second conductor diameter D2 is p2, the current density through the third conductor diameter D3 is p3, and the current density through the nth conductor diameter Dn is pn, where p1 = p2 = p3 = pn.

[0040] The wire diameter current density p = I / S, where I is the current flowing through the wire and S is the cross-sectional area of ​​the wire. Therefore, the wire diameter current density p1 of the first connection terminal between the first wire diameter D1 and the second wire diameter D2 is I1 / pi*(D1^2) / 4, the wire diameter current density p2 of the second connection terminal between the second wire diameter D2 and the third wire diameter D3 is (I1+I2) / pi*(D2^2) / 4, the wire diameter current density p3 of the third connection terminal between the third wire diameter D3 and the fourth wire diameter D4 is (I1+I2+I3) / pi*(D3^2) / 4, and so on. The wire diameter current density pn of the nth connection terminal between the (n-1)th wire diameter Dn-1 and the nth wire diameter Dn is (I1+I2+I3+...+n-1+n) / pi*(Dn^2) / 4.

[0041] The lead wire connection structure has several lead wires 2, and the several lead wires 2 are respectively connected to one end of the motor body 1.

[0042] Several exposed areas 24 are respectively connected to the windings of the motor body 1.

[0043] A lead wire, comprising a lead wire wiring structure as described in any of the above claims.

[0044] Implementation Case 2:

[0045] like Figure 3 As shown, this embodiment 2 provides a lead wire connection structure, including a wire 21 and a terminal 22. One end of the wire 21 is connected to the motor body 1, and the other end of the wire 21 is connected to the terminal 22. The wire 21 includes several wire body segments 23 and several exposed areas 24. The wire body segments 23 are connected to each other through connecting terminals 3. Several exposed areas 24 are provided on several wire body segments 23. The wire diameters of the several wire body segments 23 are different, and the several exposed areas 24 are arranged alternately with the connecting terminals 3.

[0046] The conductors 23 are made of copper enameled wire and aluminum enameled wire. Each copper enameled wire has a single copper wire inside, and each aluminum enameled wire has a single aluminum wire inside. The copper enameled wire and the aluminum enameled wire are connected by a connecting terminal 3.

[0047] The copper enameled wire and the aluminum enameled wire are arranged alternately on the conductor 21.

[0048] One end of the connecting terminal 3 is connected to a single copper wire, and the other end of the connecting terminal 3 is connected to a single aluminum wire.

[0049] The lead wire 23 is provided with a first conductor 41, a second conductor 42 and a third conductor 43 in sequence. The first conductor 41 and the third conductor 43 are aluminum enameled wires, the second conductor 42 is copper enameled wire, the first conductor 41 and the second conductor 42 are connected by a first connecting terminal 51, the second conductor 42 and the third conductor 43 are connected by a second connecting terminal 52, and one end of the third conductor 43 is connected to the third connecting terminal 53.

[0050] The first conductor 41 is disposed on the side near the motor body 1, and the third conductor 43 is disposed on the side near the terminal 22.

[0051] The wire diameter d2 of the second conductor 42 is greater than the wire diameter d1 of the first conductor 41, and the wire diameter d3 of the third conductor 43 is greater than the wire diameter d2 of the second conductor 42.

[0052] The current passing through the conductor with diameter d1 of the first conductor 41 is I1, the current passing through the conductor with diameter d2 of the second conductor 42 is I2, and the current passing through the conductor with diameter d3 of the third conductor 43 is I3, where I1 = I2 = I3.

[0053] The wire diameter current density passing through the first conductor 41 with a wire diameter d1 is p1, the wire diameter current density passing through the second conductor 42 with a wire diameter d1 is p2, and the wire diameter current density passing through the third conductor 43 with a wire diameter d3 is p3, where p1 = p2 = p3.

[0054] The wire diameter d1 of the first conductor body 41 is 1mm. 2 The wire diameter d2 of the second conductor 42 is 1.4mm. 2 The wire diameter d3 of the third conductor 43 is 1.7mm. 2 The I1 = I2 = I3 = 20A.

[0055] Therefore, the wire diameter current density p1 of the first connection terminal 51 between the wire diameter d1 of the first conductor 41 and the wire diameter d2 of the second conductor 42 is 25.5 A / mm. 2 ;

[0056] When the wire diameter d2 of the second conductor 42 and the wire diameter d3 of the third conductor 43 are connected at the second connection terminal 52, the wire current density p2 = (20 + 20) / pi * (1.4^2) / 4 = 26 A / mm 2 ;

[0057] The current density p3 of the third connection terminal 53 between the conductor diameter d3 of the third conductor 43 and the conductor diameter d4 of the fourth conductor is (20+20+20) / pi*(1.7^2) / 4 = 26.5A / mm. 2 ;

[0058] By adjusting the wire diameters d1 of the first conductor 41, D2 of the second conductor 42, and D3 of the third conductor 43, the wire diameter current densities p1, p2, and p3 of the first connecting terminal 51, the second connecting terminal 52, and the third connecting terminal 53 are made to be the same or similar. Therefore, while ensuring safety, the wire diameter of the lead wires in each terminal area is reduced, thereby reducing the cost of the lead wires.

[0059] The lead wire connection structure has several lead wires 2, and the several lead wires 2 are respectively connected to one end of the motor body 1.

[0060] Several exposed areas 24 are respectively connected to the windings of the motor body 1.

[0061] A lead wire, comprising a lead wire wiring structure as described in any of the above claims.

[0062] The working principle of this invention is as follows: Figure 4 As shown, in the current lead wire connection structure, the conductors 23 on lead wire 2 have the same wire diameter. The current in each conductor 23 of lead wire 2 continuously accumulates. According to the formula for calculating wire diameter current density: p = I / S, when the wire cross-sectional area S remains constant, the current through the first connection terminal is small, therefore the current density of the first connection terminal is very small. The current at the rear connection terminal 3 continuously accumulates with the current at the front conductor, and the current density increases sequentially. Thus, the current density margin at the front end is too large, resulting in excessive cost. By adopting the lead wire connection structure of the present invention, the wire diameter is controlled. Under the premise of ensuring safety and satisfying the current density of each connection terminal, the wire cross-sectional area is controlled, and the wire diameter of the front conductor is reduced, thereby reducing the production cost of the lead wire.

[0063] The main function of this invention is to provide a lead wire and its wiring structure, which solves the problem of the optimal wire diameter between the terminals of the lead wire. The lead wire has multiple terminal contact areas. By controlling the wire diameter between different contact areas, the wire diameter between each terminal is different. While ensuring the safety of the lead wire, the production cost of the lead wire is effectively reduced.

[0064] In summary, after reading this invention document, those skilled in the art can make various other corresponding modifications to the technical solutions and concepts based on this invention without creative mental effort, and all of these modifications fall within the scope of protection of this invention.

Claims

1. A lead wire connection structure characterized by comprising: The lead wire and the terminal, one end of the lead wire is connected with the motor body, the other end of the lead wire is connected with the terminal, the lead wire includes several lead wire bodies and several exposed areas, the lead wire body is connected with the lead wire body through the connecting terminal, several lead wire bodies are provided with several exposed areas, the wire diameter of several lead wire bodies is different, and the wire diameter of several exposed areas is arranged alternately with the connecting terminal. The several lead wire bodies are copper wire enameled wire and aluminum wire enameled wire, the inside of the copper wire enameled wire is provided with a single copper wire, the inside of the aluminum wire enameled wire is provided with a single aluminum wire, and the copper wire enameled wire and the aluminum wire enameled wire are connected through the connecting terminal. The several lead wire bodies are sequentially provided with a first lead wire body wire diameter D1, a second lead wire body wire diameter D2, a third lead wire body wire diameter D3, and a nth lead wire body wire diameter Dn. The first lead wire body wire diameter D1 is arranged on the side close to the motor body, and the nth lead wire body wire diameter Dn is arranged on the side close to the terminal. The second lead wire body wire diameter D2 is greater than the first lead wire body wire diameter D1, the third lead wire body wire diameter D3 is greater than the second lead wire body wire diameter D2, and the nth lead wire body wire diameter Dn is greater than the (n-1)th lead wire body wire diameter Dn-1. The lead wire current through the first lead wire body wire diameter D1 is I1, the lead wire current through the second lead wire body wire diameter D2 is I2, the lead wire current through the third lead wire body wire diameter D3 is I3, and the lead wire current through the nth lead wire body wire diameter Dn is In, and I1=I2=I3=In. The wire diameter current density through the first lead wire body wire diameter D1 is p1, the wire diameter current density through the second lead wire body wire diameter D2 is p2, the wire diameter current density through the third lead wire body wire diameter D3 is p3, and the wire diameter current density through the nth lead wire body wire diameter Dn is pn, and p1=p2=p3=pn. The wire diameter current density p=I / S, I is the current through the lead wire, and S is the cross-sectional area of the lead wire, so the wire diameter current density p1 of the first connecting terminal between the first lead wire body wire diameter D1 and the second lead wire body wire diameter D2 is I1 / pi*(D1^2) / 4, the wire diameter current density p2 of the second connecting terminal between the second lead wire body wire diameter D2 and the third lead wire body wire diameter D3 is (I1+I2) / pi*(D2^2) / 4, the wire diameter current density p3 of the third connecting terminal between the third lead wire body wire diameter D3 and the fourth lead wire body wire diameter D4 is (I1+I2+I3) / pi*(D3^2) / 4, and so on, and the wire diameter current density pn of the nth connecting terminal between the (n-1)th lead wire body wire diameter Dn-1 and the nth lead wire body wire diameter Dn is (I1+I2+I3+...+n-1+n) / pi*(Dn^2) / 4.

2. A lead wire connection structure according to claim 1, wherein The copper wire enameled wire and the aluminum wire enameled wire are arranged alternately on the lead wire.

3. A lead wire connection structure according to claim 2, wherein One end of the connecting terminal is connected with the single copper wire, and the other end of the connecting terminal is connected with the single aluminum wire.

4. A lead, characterized in that The lead wire connection structure comprises the lead wire connection structure according to any one of claims 1 to 3.

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