An electrical connection component for the stator armature of an electronic water pump and its wiring method

Abstract

The present invention relates to an electrical connection component for an electronic water pump stator armature and a wire passing method thereof, which comprises a slip ring assembly, a stator winding, an insulating wire frame and a stator core, wherein the insulating wire frame is sleeved on the stator core, the stator winding is wound in an insulating slot formed by the stator core and the insulating wire frame, the slip ring assembly is connected to the insulating wire frame, the stator winding is a three-phase winding, the slip ring assembly comprises a slip ring three-phase welding PIN assembly and a slip ring three-phase welding PIN plastic covering assembly, the stator winding is electrically connected to the three-phase splicing PIN assembly and welded, and a wire passing method is also provided. The three-phase head and tail wires of the armature winding of the present invention are directly drawn out from the slot, and are resistance welded on the nearest slip ring three-phase PIN, and the winding winding method is optimized to effectively avoid the problem of multi-layer winding of the wire passing at the outer edge of the wire frame, simplify the production process, improve production efficiency, and improve the reliability and quality of the motor.

Description

Technical Field

[0001] The invention relates to the technical field of electronic water pumps, in particular to an electrical connection component for an electronic water pump stator armature and a wire passing method thereof. Background Art

[0002] Electronic water pumps are widely used in automobile cooling circulation systems; electronic water pumps use brushless motors to drive the impeller to rotate, increase the liquid pressure, and drive water, coolant and other media to circulate. At present, the power supply system of automobile parts is commonly used as 12V / 24V system, and the power of common motor water pumps is as high as 400~600W, and the three-phase current of the motor is as high as 30~50A, and the single wire diameter is as high as Φ1.3~Φ2.3mm. Patent CN 210444084 U attachment Figure 2 A method of armature winding lead-out is given. As shown in the figure, the assembly parts include a wire rack 1, a stator assembly 2, an insulating sheath 3, and a motor enameled wire 4. The stator is pre-wound, and the armature three-phase head and tail wires are retained. Then, the motor armature three-phase is arranged to the predetermined slot through the wire rack 1, and then the enameled wire 4 is cut, stripped, and tinned, thereby realizing the predetermined lead-out of the armature winding three-phase. Or by Figure 1 In the method shown, the armature three-phase winding bridge wire and the head and tail connecting wires are passed through the outer edge of the armature wire frame insulation, and then the head and tail wires are hung on the predetermined three-phase welding PIN, and finally the stator armature is manufactured through resistance welding.

[0003] Existing designs show that, as shown in the patent CN 210444084 U Figure 2 As mentioned above, the three-phase head and tail wires of the stator armature are arranged in the predetermined wire slots through the wire rack. Because the single-strand wire is as high as Φ1.3~Φ2.3mm, the wire tension is large, deformation is difficult, the process operation is difficult, and the production efficiency is low. In addition, due to motor vibration and stress release, the wire is easy to slip out of the predetermined wire slot, resulting in product failure. Another traditional way of stator armature production, such as Figure 1As shown, a traditional insulating wire frame 15 and a traditional insulating wire frame 2 13 are placed on a traditional stator core 14, and then a traditional stator winding 12 is wound in a slot space formed by the traditional insulating wire frame 15 and the traditional insulating wire frame 2 13, and finally the head and tail wires of the traditional stator winding 12 are welded to a traditional three-phase welding sheet 11; the traditional stator winding three-phase winding head wire 1201, the traditional three-phase winding tail wire 1202, and the traditional three-phase winding bridge wire 1203 are connected to the traditional insulating wire frame 2 13 or the traditional stator winding. The outer edge of the sub-core 14 is lined with wires, and multiple layers of wires (usually 2 to 5 layers) are distributed axially on the outer side of the wire frame when cut along the radial plane. The wires are easily overlapped during the winding process. The increased size causes the wires to extend beyond the outside of the core and contact the metal casing or the creepage distance is too small, or the stacked wires are easily vibrated and rubbed, causing the enameled wires to break, resulting in the risk of phase-to-phase short circuit, and further causing the armature winding to fail. Moreover, this structure is currently suitable for winding enameled wires below Φ1.5, and is not suitable for the development of water pumps above 12V@300W. Summary of the invention

[0004] In view of the above problems, the present invention provides an electrical connection component for an electronic water pump stator armature and a wire passing method thereof, which can effectively avoid the problem of multi-layer winding of wires at the outer edge of a wire rack and improve production efficiency.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: an electrical connection component for the stator armature of an electronic water pump, including a slip ring assembly, a stator winding, an insulating bobbin and a stator core, the top and bottom ends of the stator core are both sleeved with insulating bobbins, the stator winding is wound in an insulating groove formed by the stator core and the insulating bobbin, the slip ring assembly is connected to the insulating bobbin, the stator winding is a three-phase winding, the slip ring assembly includes a slip ring three-phase welded PIN assembly and a slip ring three-phase welded PIN plastic sheathing assembly, and the stator winding is electrically connected to the three-phase spliced ​​PIN assembly.

[0006] Preferably, the stator core is provided with 12 slots, and each phase winding of the stator winding includes 4 sections, which are respectively a three-phase winding head line, an in-slot winding, a three-phase winding bridge line and a three-phase winding tail line. At the same time, each of the three-phase winding bridge lines is axially distributed along the radial plane at the outer edge of the insulating wire frame and is only one layer. There is no crossing or multi-layer winding between the three-phase winding bridge lines, and between the three-phase winding head line and the three-phase winding tail line, so as to avoid the wire skin being worn out during the vibration process due to the crossing of the wires, resulting in a local short circuit of the winding, and then the risk of armature failure. The head end of each of the three-phase winding head line and the tail end of the three-phase winding tail line are welded in the slot of the three-phase welding PIN of the merge ring by resistance welding. The ends of the three-phase winding head line and the three-phase winding tail line meet the △ or Y-type wiring rule of the three-phase winding, ensuring that the armature winding resistance and inductance parameters measured at the outlet end of the three-phase PIN of the merge ring after welding are three-phase balanced.

[0007] Preferably, the three-phase welding PIN assembly of the collector ring includes a connecting PIN substrate and a three-phase welding PIN U phase, a three-phase welding PIN V phase, and a three-phase welding PIN W phase arranged on the connecting PIN substrate. At the same time, the three-phase welding PIN U phase, the three-phase welding PIN V phase and the three-phase welding PIN W phase each include two three-phase winding welding ends, a three-phase lead-out end and several three-phase PIN avoidance gaps. The three-phase winding welding portion is arranged above the three-phase PIN avoidance gap. The setting of the three-phase PIN avoidance gap ensures that all three-phase welding PINs are on the same reference plane. The angle between the two welded three-phase winding welding ends of each three-phase welding PIN is 150 to 210° along the circumference. At least two enameled wires are welded in each of the three-phase winding welding end grooves, and the minimum gap between any two three-phase welding PINs in the collector ring is ≥0.5mm.

[0008] Preferably, the gap between the three-phase welding PIN assembly and the outer layer is filled and fixed by insulating plastic, and a three-phase welding PIN plastic sheathing assembly of the slip ring is formed after curing. The slip ring three-phase welding PIN plastic sheathing assembly includes a sheathing base and a three-phase welding PIN plastic sheathing portion arranged on the sheathing base, several slip ring plastic mounting seats, several slip ring plastic positioning bosses and slip ring plastic inner ring positioning bosses arranged inside the sheathing base. The three-phase welding PIN plastic sheathing portion is wrapped around the three-phase lead-out end The lower part of the slip ring plastic mounting seat is connected to the positioning column of the insulating wire frame for circumferential fixation, and the slip ring plastic inner ring positioning boss engages with the groove inside the insulating wire frame for axial fixation. The slip ring plastic positioning boss is arranged above the welding end of the three-phase winding at the corresponding position and the height of the slip ring plastic positioning boss is 2-3mm higher than the top of the enameled wire. During the welding process, the height of the enameled wire does not exceed the slip ring plastic positioning boss, so that the slip ring plastic positioning boss is equivalent to a protection and isolation.

[0009] Preferably, the slip ring assembly has a temperature resistance of more than 150°, the three-phase welding PIN has a normal temperature insulation resistance of ≥50MΩ, and a phase-to-phase withstand voltage of ≥2000V. At the same time, the copper bar cross-sectional area of ​​the three-phase welding PIN is ≥2mm2, and the copper bar area of ​​a suitable size range ensures that when the three-phase welding PIN current (15-80A) flows through the copper bar, the current density of the copper bar is controlled at ≤10A / mm2, so as to avoid a large increase in the current density of the three-phase welding PIN of the slip ring assembly due to a large temperature rise, resulting in premature aging and carbonization of the slip ring plastic, and further causing a short circuit between the three phases of the poorly insulated lead.

[0010] Preferably, the three-phase welding PIN of the three-phase welding PIN assembly is made of copper, and a layer of corrosion-resistant benign conductor covering is plated on the surface of the three-phase welding PIN substrate, and the corrosion-resistant benign conductor covering is tin, silver or gold.

[0011] Preferably, the slot-to-pole ratio of the stator winding is a 12-slot 10-pole structure and the number of parallel branches is 2.

[0012] Preferably, the 12 winding lead-out wire heads and tails of the stator winding are marked with phases as U+ phase 1 slot and 7 slots, U- phase 2 slots and 8 slots; V+ phase 3 slots and 9 slots, V- phase 4 slots and 10 slots; W+ phase 5 slots and 11 slots, W- phase 6 slots and 12 slots; and the stator winding is connected according to the three-phase winding △ connection rule of U+ to W-, V+ to U-, and W+ to V-, and the three-phase welding endpoints are respectively U-phase PIN, V-phase PIN, and W-phase PIN, and the U-phase PIN is welded with 12 slots and 1 slot, 7 slots and 6 slots lead-out wires; the V-phase PIN is welded with 2 slots and 3 slots, 8 slots and 9 slots lead-out wires; the W-phase PIN is welded with 5 slots and 4 slots, 11 slots and 10 slots lead-out wires, and at the same time, the magnetic potential of the three-phase winding in the stator armature is distributed at 120° in the space vector.

[0013] Preferably, the three-phase lead-out end portions are led out in parallel along the armature axis direction or in a direction perpendicular to the point axis direction, and the three-phase welding PIN U phase, the three-phase welding PIN V phase, and the three-phase welding PIN W phase in the three-phase welding PIN assembly are distributed along the circumference in a 120° angle fan-shaped area so as to dock with the PCB, reduce the length of the driver's three-phase drive bridge, thereby avoiding large currents from flowing through the PCB board, reducing the loss of the PCB driver's copper wire, and thereby reducing the driver's temperature rise.

[0014] A method for passing a wire through an electrical connection component for an electronic water pump stator armature, comprising the following steps:

[0015] S1. First, put the insulating wire rack on the stator core, and perform stator winding and tapping according to the actual number of turns and wire diameter required. Specifically, start winding, the right side of 12 slots: 12 reverse-11 slots forward, tapping into 9 slots left-9 slots forward-10 slots reverse, tapping into 8 slots right-8 reverse-7 slots forward, tapping into 5 slots left-5 slots forward-6 slots reverse, tapping into 4 slots right-4 reverse-3 slots forward, tapping into 1 slot left-2 slots forward-2 slots reverse, cut the tail wire, and finally cut the tap wire, leaving 12 wire ends;

[0016] S2, process the three-phase welding wires. The head wires and tail wires of the three-phase windings are both at the upper end of the three-wire winding bridge wires, and the head wires and tail wires of the three-phase windings are arranged nearby to the slots that need to be welded;

[0017] S3, insert the merge ring assembly and install it on the insulating wire rack, insert the three-phase winding lead wire into the three-phase winding welding end groove of the merge ring three-phase welding PIN, and then perform resistance welding on the six three-phase winding welding ends in sequence;

[0018] S4. Finally, the armature assembly is subjected to a comprehensive stator test. If the requirements are met, the armature product can be manufactured.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The three-phase winding head wire and the three-phase winding tail wire of the armature winding of the present invention are directly led out from the slot, and are resistance welded on the nearest three-phase welding PIN of the merge ring. The winding winding method is optimized, and there is only one layer of three-phase winding bridge wire in the axial direction of the outer edge of the wire frame along the radial plane section, which can effectively avoid the problem in the prior art. Figure 1 The problem of multi-layer winding of wires on the outer edge of the wire rack shown in the figure is solved, and at the same time, the risk of manual wiring in patent CN 210444084 U, crossover of lead wires, and short circuit caused by friction and skin breakage of inter-phase enameled wires due to motor vibration is avoided, thereby improving the reliability and quality of the motor; the production process is simplified, and the risk of misconnection and wrong connection of windings can be effectively avoided through reasonable wiring and winding; the lead wires are directly welded to the nearest three-phase welding PIN, which improves product assembly efficiency, improves product consistency, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the electronic armature structure in the prior art;

[0022] Figure 2 It is a schematic diagram of another armature winding outlet method in the prior art;

[0023] Figure 3 A schematic diagram of the stator armature structure of a preferred embodiment of the present invention;

[0024] Figure 4 A schematic structural diagram of a stator armature bus ring (BUSBAR) assembly according to a preferred embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the assembly structure of the three-phase welding PIN (copper busbar) of the bus ring in the present invention;

[0026] Figure 6 A schematic structural diagram of a three-phase welded PIN plastic sheath assembly of a slip ring according to the present invention;

[0027] Figure 7 A schematic diagram of winding expansion of a motor stator (12 slots and 10 poles) and a method for implementing the same in the present invention;

[0028] Figure 8 A schematic diagram of the stator armature outgoing wire structure of the present invention (bridge wire without wire compression);

[0029] Fig. 9 A schematic diagram of another structure of a slip ring assembly of the present invention;

[0030] Fig.10Another schematic diagram of the stator armature structure of the present invention. DETAILED DESCRIPTION

[0031] The following will be combined Figure 1-10 The present invention is described in detail. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0032] An electrical connection component for an electronic water pump stator armature, comprising a slip ring assembly 21, a stator winding 22, an insulating bobbin 23 and a stator core 24. The top and bottom ends of the stator core 24 are both sleeved with insulating bobbin 23. The stator winding 22 is wound in an insulating slot formed by the stator core 24 and the insulating bobbin 23. The slip ring assembly is connected to the insulating bobbin. The stator winding is a three-phase winding. The slip ring assembly comprises a slip ring three-phase welding PIN assembly 2101 and a slip ring three-phase welding PIN plastic sheathing assembly 2102. The stator winding is electrically connected to the three-phase spliced ​​PIN assembly.

[0033] The stator core is provided with 12 slots, and each phase winding of the stator winding 22 includes 4 sections, which are respectively a three-phase winding head line 2201, a slot winding, a three-phase winding bridge line 2203 and a three-phase winding tail line 2202. At the same time, each three-phase winding bridge line 2203 is axially distributed along the radial plane on the outer edge of the insulating wire frame 23 and is only one layer. There is no crossing or multi-layer between the three-phase winding bridge lines, and with the three-phase winding head line and the three-phase winding tail line. Overlap winding avoids wire crossing and wire skin being worn during vibration, which may lead to local short circuit of winding and further risk of armature failure. The head end of each three-phase winding head wire and the tail end of the three-phase winding tail wire are resistance welded in the groove of the three-phase welding PIN of the merge ring. The ends of the three-phase winding head wire and the three-phase winding tail wire meet the △ or Y-type wiring rules of the three-phase winding, ensuring that the armature winding resistance and inductance parameters measured at the three-phase PIN outlet end of the merge ring after welding are three-phase balanced.

[0034] The three-phase welding PIN assembly 2101 of the merge ring includes a connection PIN base and a three-phase welding PIN U phase 41, a three-phase welding PIN V phase 42, and a three-phase welding PIN W phase 43 arranged on the connection PIN base. The W phase 43 includes two three-phase winding welding ends 4101, a three-phase lead-out end 4102 and several three-phase PIN avoidance gaps 4103. The three-phase winding welding part 4102 is arranged above the three-phase PIN avoidance gap. The setting of the three-phase PIN avoidance gap ensures that all three-phase welding PINs are on the same reference plane. The material of the three-phase welding PIN of the three-phase welding PIN assembly is preferably copper. At the same time, a layer of corrosion-resistant benign conductor covering is plated on the surface of the three-phase welding PIN substrate. The corrosion-resistant benign conductor covering is tin, silver or gold. The angle between the two welded three-phase winding welding ends 4101 of each three-phase welding PIN is 150~210° along the circumference. At least two enameled wires are welded in the groove of each three-phase winding welding end 4101, and the minimum gap between any two three-phase welding PINs in the collector ring is ≥0.5mm.

[0035] After the three-phase welding PIN is positioned at a specific angle in space, the gap between the three-phase welding PIN assembly and the outer layer is filled and fixed by insulating plastic. After curing, a three-phase welding PIN plastic sheathing assembly 2102 of the merge ring is formed. The merge ring three-phase welding PIN plastic sheathing assembly includes a sheathing base and a three-phase welding PIN plastic sheathing portion 51 arranged on the sheathing base, a plurality of merge ring plastic mounting seats 52, a plurality of merge ring plastic positioning bosses 53 and a merge ring plastic inner ring positioning boss 54 arranged inside the sheathing base. The three-phase welding PIN plastic sheathing portion is arranged on the three-phase lead At the lower part of the end portion 4102, the plastic mounting seat of the collector ring is connected to the positioning column of the insulating wire frame 23 for circumferential fixation, and at the same time, the plastic inner ring positioning boss 54 of the collector ring engages with the groove inside the insulating wire frame 23 for axial fixation. The plastic positioning boss of the collector ring is arranged above the corresponding position of the three-phase winding welding end 4101 and the height of the plastic positioning boss 53 of the collector ring is 2-3mm higher than the top of the enameled wire. During the welding process, the height of the enameled wire does not exceed the plastic positioning boss of the collector ring, so that the plastic positioning boss of the collector ring is equivalent to a protection and isolation. The slip ring assembly 21 should meet the requirements of temperature resistance above 150°, the insulation resistance between the three-phase welding PIN at room temperature ≥50MΩ, the phase-to-phase withstand voltage ≥2000V, and the copper busbar cross-sectional area of ​​the three-phase welding PIN ≥2mm2. The copper busbar area of ​​the appropriate size range ensures that when the current (15~80A) flows through the three-phase welding PIN, the copper busbar current density is controlled at ≤10A / mm2, so as to avoid the slip ring assembly three-phase welding PIN current density rise due to large temperature rise, resulting in premature aging and carbonization of the slip ring plastic, and then causing a short circuit between the three phases of the poorly insulated lead.

[0036] The slot-to-pole ratio of the stator winding 22 is a 12-slot 10-pole structure and the number of parallel branches is 2. The 12 winding lead ends of the stator winding 22 are marked with phases as U+ phase 1 slot and 7 slots, U- phase 2 slots and 8 slots; V+ phase 3 slots and 9 slots, V- phase 4 slots and 10 slots; W+ phase 5 slots and 11 slots, W- phase 6 slots and 12 slots; and the stator winding 22 is connected according to the three-phase winding △ connection rule U+ to W-, V+ to U-, W+ to V-, and the three-phase welding endpoints are respectively U phase PIN, V phase PIN, and W phase PIN, and the U phase PIN is welded with 12 slots and 1 slot, 7 slots and 6 slots lead wires; the V phase PIN is welded with 2 slots and 3 slots, 8 slots and 9 slots lead wires; the W phase PIN is welded with 5 slots and 4 slots, 11 slots and 10 slots lead wires, and at the same time, the magnetic potential of the three-phase winding in the stator armature is distributed at 120° in the space vector. The three-phase lead-out end 4102 is led out in parallel with the armature axis direction or in a direction perpendicular to the point axis. The three-phase welding PIN U phase 41, the three-phase welding PIN V phase 42, and the three-phase welding PIN W phase 43 in the three-phase welding PIN assembly are distributed along the circumference in a 120° angle fan-shaped area to facilitate docking with the PCB, thereby reducing the length of the driver's three-phase drive bridge, thereby avoiding large current from flowing through the PCB board, reducing the PCB driver copper wire loss, and thereby reducing the driver temperature rise.

[0037] During the implementation process, the following steps are taken to pass the line:

[0038] S1, such as Figure 3 As shown, the insulating wire frame 23 is sleeved on the stator core 24, referring to Figure 7 , perform stator winding and tapping according to the number of turns and wire diameter specified in the drawing. Specifically, start winding, right side of 12 slots: 12 reverse-11 slots forward, tapping into 9 slots left-9 slots forward-10 slots reverse, tapping into 8 slots right-8 reverse-7 slots forward, tapping into 5 slots left-5 slots forward-6 slots reverse, tapping into 4 slots right-4 reverse-3 slots forward, tapping into 1 slot left-2 slots forward-2 slots reverse, cut the tail wire, and finally cut the tapping wire, leaving 12 wire ends;

[0039] S2. Reference Figure 8 Process the three-phase welding wires. The three-phase winding head wire 2201 and the three-phase winding tail wire 2202 are both at the upper end of the three-wire winding bridge wire 2203, and the three-phase winding head wire and the three-phase winding tail wire are arranged nearby to the slots that need to be welded;

[0040] S3, insert the merge ring assembly 21 and install it on the insulating wire frame 23, insert the three-phase winding lead wire into the three-phase winding welding end 4101 groove of the merge ring three-phase welding PIN, and then perform resistance welding on the six three-phase winding welding ends 4101 in sequence;

[0041] S4. Finally, the armature assembly is subjected to a comprehensive stator test. If the requirements are met, the armature product can be manufactured.

[0042] The present invention discloses an electrical connection component for the stator armature of an electronic water pump motor and a wire passing method thereof. The bridge wire 2203 of each phase three-phase winding is cut along a radial plane and axially distributed on the outer edge of the insulating wire frame 23 is only one layer, which can effectively avoid the existing Figure 1 Technical solution The problem of winding wires or multi-layer winding of phase lead wires is avoided, such as patent CN 210444084 U. Figure 2 Manual wiring, lead wire crossing, motor vibration caused by interphase enameled wire friction and skin breakage short circuit risk, improve the reliability and quality of armature products. Figure 7 and Figure 8 Through reasonable wiring and winding, fool-proof and error-proof design can effectively avoid the risk of winding misconnection and wrong connection. The lead wire is directly welded on the nearest three-phase welding PIN, which improves product assembly efficiency, improves product consistency, and reduces production costs.

[0043] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An electrical connection component for an electronic water pump stator armature, characterized in that: The invention comprises a slip ring assembly (21), a stator winding (22), an insulating wire frame (23) and a stator core (24); the top and bottom ends of the stator core (24) are both sleeved with insulating wire frames (23); the stator winding (22) is wound in an insulating slot formed by the stator core (24) and the insulating wire frame (23); the slip ring assembly is connected to the insulating wire frame; the stator winding is a three-phase winding; the slip ring assembly comprises a slip ring three-phase welding PIN assembly (2101) and a slip ring three-phase welding PIN plastic sheathing assembly (2102); and the stator winding is electrically connected to a three-phase spliced ​​PIN assembly.

2. The electrical connection component for the stator armature of an electronic water pump according to claim 1, characterized in that: The stator core is provided with 12 slots, and each phase winding of the stator winding (22) includes 4 sections, which are respectively a three-phase winding head line (2201), an in-slot winding, a three-phase winding bridge line (2203) and a three-phase winding tail line (2202). Meanwhile, each of the three-phase winding bridge lines (2203) is axially distributed on the outer edge of the insulating wire frame (23) along a radial plane and is only one layer. The head end of each of the three-phase winding head line and the tail end of each of the three-phase winding tail lines are welded in the slot of the three-phase welding PIN of the merge ring by resistance welding, and the ends of the three-phase winding head line and the three-phase winding tail line meet the three-phase winding △ or Y-type connection rule.

3. The electrical connection component for the stator armature of an electronic water pump according to claim 1, characterized in that: The three-phase welding PIN assembly (2101) of the collector ring comprises a connecting PIN base and a three-phase welding PIN U phase (41), a three-phase welding PIN V phase (42), and a three-phase welding PIN W phase (43) arranged on the connecting PIN base; the three-phase welding PIN U phase (41), the three-phase welding PIN V phase (42), and the three-phase welding PIN W phase (43) each comprise two three-phase winding welding ends (4101), a three-phase lead-out end (4102), and a plurality of three-phase PIN avoidance notches (4103); the three-phase winding welding portion (4102) is arranged above the three-phase PIN avoidance notch; the angle between the two welded three-phase winding welding ends (4101) of each three-phase welding PIN is 150 to 210 degrees along the circumference; at least two enameled wires are welded in a groove of each three-phase winding welding end (4101); and the minimum gap between any two three-phase welding PINs in the collector ring is ≥0.5 mm.

4. The electrical connection component for the stator armature of an electronic water pump according to claim 3, characterized in that: The gap between the three-phase welding PIN assembly and the outer layer is filled and fixed by insulating plastic, and after solidification, a three-phase welding PIN plastic sheathing assembly (2102) of the slip ring is formed. The slip ring three-phase welding PIN plastic sheathing assembly includes a sheathing base and a three-phase welding PIN plastic sheathing portion (51) arranged on the sheathing base, a plurality of slip ring plastic mounting seats (52), a plurality of slip ring plastic positioning bosses (53) and a slip ring plastic inner ring positioning boss (54) arranged inside the sheathing base. The three-phase welding PIN plastic coating is wrapped around the lower part of the three-phase lead-out end (4102), the plastic mounting seat of the collector ring is connected to the positioning column of the insulating wire frame (23) for circumferential fixation, and the plastic inner ring positioning boss (54) of the collector ring is engaged with the groove inside the insulating wire frame (23) for axial fixation, and the plastic positioning boss of the collector ring is arranged above the corresponding position of the three-phase winding welding end (4101) and the height of the collector ring plastic positioning boss (53) is 2-3 mm higher than the top of the enameled wire.

5. The electrical connection component for the stator armature of an electronic water pump according to claim 3, characterized in that: The collector ring assembly (21) has a temperature resistance of more than 150°, the three-phase welding PIN has a phase-to-phase insulation resistance of ≥50MΩ at room temperature, and a phase-to-phase withstand voltage of ≥2000V, and the cross-sectional area of ​​the copper busbar of the three-phase welding PIN is ≥2mm2.

6. The electrical connection component for the stator armature of an electronic water pump according to claim 1, characterized in that: The three-phase welding PIN of the three-phase welding PIN assembly is made of copper, and a layer of corrosion-resistant benign conductor covering is plated on the surface of the three-phase welding PIN substrate, and the corrosion-resistant benign conductor covering is tin, silver or gold.

7. The electrical connection component for the stator armature of an electronic water pump according to claim 2, characterized in that: The slot-to-pole ratio of the stator winding (22) is a 12-slot 10-pole structure and the number of parallel branches is 2.

8. The electrical connection component for the stator armature of an electronic water pump according to claim 1, characterized in that: The 12 winding lead ends of the stator winding (22) are marked with phases of 1 slot and 7 slots for U+ phase, 2 slots and 8 slots for U- phase; 3 slots and 9 slots for V+ phase, 4 slots and 10 slots for V- phase; 5 slots and 11 slots for W+ phase, 6 slots and 12 slots for W- phase; and the stator winding (22) is connected according to the three-phase winding △ connection rule of U+ to W-, V+ to U-, and W+ to V-, and the three-phase welding endpoints are respectively U-phase PIN, V-phase PIN, and W-phase PIN, and the U-phase PIN is welded with 12 slots and 1 slot, 7 slots and 6 slots lead wires; the V-phase PIN is welded with 2 slots and 3 slots, 8 slots and 9 slots lead wires; the W-phase PIN is welded with 5 slots and 4 slots, 11 slots and 10 slots lead wires, and the magnetic potential of the three-phase winding in the stator armature is distributed at 120 degrees in the space vector.

9. The electrical connection component for the stator armature of an electronic water pump according to claim 3, characterized in that: The three-phase lead-out end (4102) is led out in parallel with the armature axis direction or in a direction perpendicular to the point axis. The three-phase welding PIN U phase (41), the three-phase welding PIN V phase (42), and the three-phase welding PIN W phase (43) in the three-phase welding PIN assembly are distributed along the circumference in a 120° included angle sector area.

10. A method for threading an electrical connection component for an electronic water pump stator armature according to any one of claims 1 to 9, characterized in that: The steps include: S1. First, put the insulating wire rack (23) on the stator core (24), and perform stator winding and tapping according to the actual number of turns and wire diameter required. Specifically, start winding, the right side of 12 slots: 12 reverse-11 slots forward, tapping into 9 slots left-9 slots forward-10 slots reverse, tapping into 8 slots right-8 reverse-7 slots forward, tapping into 5 slots left-5 slots forward-6 slots reverse, tapping into 4 slots right-4 reverse-3 slots forward, tapping into 1 slot left-2 slots forward-2 slots reverse, cut the tail wire, and finally cut the tapping wire, leaving 12 wire ends; S2, processing the three-phase welding wires, the three-phase winding head wire (2201) and the three-phase winding tail wire (2202) are both at the upper end of the three-wire winding bridge wire (2203), and the three-phase winding head wire and the three-phase winding tail wire are arranged nearby to the slots that need to be welded; S3, inserting the merge ring assembly (21) and installing it on the insulating wire frame (23), inserting the three-phase winding lead wire into the groove of the three-phase winding welding end (4101) of the merge ring three-phase welding PIN, and then performing resistance welding on the six three-phase winding welding ends (4101) in sequence; S4. Finally, the armature assembly is subjected to a comprehensive stator test. If the requirements are met, the armature product can be manufactured.

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