CN113141084B - Junction box and permanent magnet motor - Google Patents
Junction box and permanent magnet motor Download PDFInfo
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- CN113141084B CN113141084B CN202010058822.0A CN202010058822A CN113141084B CN 113141084 B CN113141084 B CN 113141084B CN 202010058822 A CN202010058822 A CN 202010058822A CN 113141084 B CN113141084 B CN 113141084B
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- insulating
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- 238000001802 infusion Methods 0.000 claims abstract description 41
- 238000009413 insulation Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 239000000110 cooling liquid Substances 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims description 35
- 230000005611 electricity Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims 5
- 230000017525 heat dissipation Effects 0.000 abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
- H02K5/225—Terminal boxes or connection arrangements
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The embodiment of the invention provides a junction box and a permanent magnet motor, wherein the junction box comprises: the insulation box body is provided with a first threading hole unit and a second threading hole unit; the first wiring terminal block is arranged in the insulation box body and is provided with three first wiring units; the three second wiring terminal blocks are arranged in the insulation box body in an insulating mode, are arranged in an insulating mode and are all arranged with the first wiring terminal block in an insulating mode, and a second wiring unit and a third wiring unit are arranged on the second wiring terminal block; the liquid cooling device comprises a liquid storage tank, an infusion pump, a heat dissipation row and a fan, wherein the heat dissipation row is arranged on the outer side of the insulation box body, the fan is used for dissipating heat, the liquid storage tank, the infusion pump, the first wiring terminal block, the second wiring terminal block and the heat dissipation row are connected in series through an infusion pipeline of cooling liquid to form an annular loop, so that heat on the first wiring terminal block and the second wiring terminal block is conducted to the heat dissipation row through the cooling liquid, and the heat dissipation efficiency is high.
Description
Technical Field
The embodiment of the invention relates to the technical field of permanent magnet motors, in particular to a junction box and a permanent magnet motor.
Background
The AC permanent magnet synchronous motor has been widely accepted by various industries in the current society due to a series of advantages of small volume, light weight, high efficiency, energy saving and the like. And as the operation characteristics of synchronous motors and their control techniques are becoming mature, they have been increasingly paid attention to. Recent practice has shown that more and more asynchronous motors are being gradually replaced by permanent magnet synchronous motors for the purposes of volume reduction, material saving, efficiency improvement, energy consumption reduction and the like.
However, the existing low-voltage high-power junction box for the alternating-current permanent magnet synchronous motor is directly connected by adopting double wiring bolts or copper bars, the wiring bolts or the copper bars and cables can generate heat seriously under the condition of high current only by slight overload, the surface of the wiring bolts or the copper bars is damaged seriously, and the wiring cables can cause insulation aging, so that fire disaster is caused or the junction box is electrified, and safety accidents are caused.
Disclosure of Invention
In view of the above problems in the prior art, the embodiment of the invention provides a junction box and a permanent magnet motor with good heat dissipation.
In order to solve the above problems, the technical solution provided by the embodiment of the present invention is:
A junction box for use with a permanent magnet motor, the permanent magnet motor including three-phase windings, the junction box comprising:
the insulation box body is provided with a first threading hole unit and a second threading hole unit respectively, the first threading hole unit is used for threading connecting wires led out from two sides of the three-phase winding, and the second threading hole unit is used for threading external connecting wires of the three-phase power supply;
The first wiring terminal block is arranged in the insulating box body, three first wiring units are arranged on the first wiring terminal block, and the three first wiring units are used for being connected with connecting wires led out from one side of one winding of the three-phase windings respectively;
The three second wiring terminal blocks are arranged in the insulation box body in an insulated mode, the three second wiring terminal blocks are arranged with the first wiring terminal blocks in an insulated mode, a second wiring unit and a third wiring unit are arranged on the second wiring terminal blocks, the second wiring units of the three second wiring terminal blocks are used for being connected with connecting wires led out from the other side of one winding of the three-phase windings respectively, and the third wiring unit is used for being connected with external connecting wires of one phase of three-phase electricity;
The liquid cooling device comprises a liquid storage tank, an infusion pump, a heat dissipation row and a fan, wherein the heat dissipation row is arranged on the outer side of the insulation box body, the fan is used for dissipating heat of the heat dissipation row, and the liquid storage tank, the infusion pump, the first wiring terminal block, the second wiring terminal block and the heat dissipation row are connected in series through an infusion pipeline of cooling liquid to form an annular loop, so that heat on the first wiring terminal block and the second wiring terminal block is conducted to the heat dissipation row through the cooling liquid.
In some embodiments, the first connecting terminal block is provided with a plurality of first infusion holes penetrating through two ends of the first connecting terminal block, and the first infusion holes are connected in series through an infusion pipeline.
In some embodiments, the three second connection terminal blocks are respectively provided with a plurality of second infusion holes penetrating through two ends of the second connection terminal blocks, and the second infusion holes on the three second connection terminal blocks are connected in series through infusion pipelines.
In some embodiments, an insulating pillar is protruding on the bottom surface of the insulating box body, an insulating board is disposed on the top of the insulating pillar, and the first terminal block and the second terminal block are both mounted on the insulating board.
In some embodiments, three clamping grooves are formed in the insulating plate at intervals, and the three second wiring terminal blocks are respectively clamped in the three clamping grooves.
In some embodiments, the first threading hole unit is disposed on the bottom surface of the insulating box body, a strip-shaped through hole is disposed at a position where the middle part of the insulating plate is opposite to the first threading hole unit, the first wiring terminal block is disposed on one side of the strip-shaped through hole, and the three second wiring terminal blocks are sequentially disposed on the other side of the strip-shaped through hole.
In some embodiments, the first threading hole unit includes three sequentially disposed first threading holes disposed on the bottom surface of the insulation case.
In some embodiments, the outer side of the insulation box body is convexly provided with a wire part, a wire cavity is arranged in the wire part, the wire cavity is communicated with the inner cavity of the insulation box body, and the second threading hole unit is arranged at one end of the wire part far away from the insulation box body and is communicated with the wire cavity.
In some embodiments, the second threading hole unit includes a plurality of second threading holes, and a screw sleeve for fastening the external connection wire is disposed in the second threading holes.
The permanent magnet motor comprises a stator and a rotor, wherein a three-phase winding is arranged on the stator, and the permanent magnet motor further comprises the junction box.
Compared with the prior art, the embodiment of the invention has the beneficial effects that:
The junction box provided by the embodiment of the invention has the advantages of compact structure, safe and reasonable design, diversified wiring modes, higher heat dissipation efficiency through the liquid cooling device and capability of meeting the wiring conditions of large current and larger heating value.
Drawings
FIG. 1 is an exploded view of a junction box according to an embodiment of the present invention;
fig. 2 is a schematic view of a part of the structure of an insulation box body of the junction box according to an embodiment of the invention;
fig. 3 is a schematic structural view of an insulating plate of the junction box according to an embodiment of the present invention;
Fig. 4 is a schematic structural view of a first terminal block of the junction box according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a second terminal block of the junction box according to the embodiment of the present invention;
fig. 6 is a schematic structural view of a liquid cooling device of a junction box according to an embodiment of the present invention.
Reference numerals illustrate:
100-insulating box body; 110-a first threading aperture unit; 111-a first threading hole; 120-a second threading hole unit; 121-a second threading hole; 122-a screw sleeve; 130-insulating pillars; 140-wire parts;
200-a first terminal block; 210-a first wiring unit; 220-a first infusion hole;
300-a second terminal block; 310-a second wiring unit; 320-a third wiring unit; 330-a second infusion port;
400-liquid cooling device; 410-a liquid storage tank; 420-an infusion pump; 430-heat dissipating rows; 440-a fan; 450-transfusion pipeline;
500-insulating plates; 510-a clamping groove; 520-bar-shaped through holes.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present invention, the present invention is described in detail below with reference to the accompanying drawings and detailed description.
The embodiment of the invention provides a junction box which is applied to a permanent magnet motor, wherein the permanent magnet motor comprises a stator and a rotor, three-phase windings are wound on the stator, the three-phase windings form 120 degrees with each other, the junction box is used for realizing the internal connection of the three-phase windings, and the three-phase windings are connected with external connecting wires of three-phase electricity.
Referring to fig. 1,2 and 5, the junction box according to the embodiment of the present invention includes an insulation box body 100, a first junction terminal block 200, three second junction terminal blocks 300 and a liquid cooling device 400, wherein a first threading hole unit 110 and a second threading hole unit 120 are respectively disposed on the insulation box body 100, connection wires led out from two sides of a three-phase winding can extend into the insulation box body 100 from the first threading hole unit 110, and external connection wires of three-phase electricity can extend into the insulation box body 100 from the second junction hole unit.
Three first connection units 210 are arranged on the first connection terminal block 200, each first connection unit 210 is used for being connected with a connection wire led out from one side of one winding of the three-phase windings, and the connection wires led out from one side of the three windings of the three-phase windings can be connected together through the first connection terminal block 200; the three second terminal blocks 300 are arranged in the insulating box body 100 in an insulated manner, and the three second terminal blocks 300 are arranged in an insulated manner with the first terminal block 200, the second terminal blocks 300 are provided with second terminal units 310 and third terminal units 320, each second terminal unit 310 is used for being connected with a connecting wire led out from the other side of one winding of the three-phase windings, and the third terminal units 320 are used for being connected with an external connecting wire of one phase of the three-phase power, namely, the three external connecting wires of the three-phase power are respectively connected with the three-phase windings through the three second terminal blocks 300.
The liquid cooling device 400 comprises a liquid storage tank 410, an infusion pump 420, a heat dissipation row 430 and a fan 440, wherein the heat dissipation row 430 is arranged on the outer side of the insulation box body 100; the fan 440 may be connected to the heat dissipating row 430 for dissipating heat from the heat dissipating row 430; the liquid storage tank 410, the liquid delivery pump 420, the first wiring terminal block 200, the second wiring terminal block 300 and the heat dissipation row 430 are connected in series through the liquid delivery pipeline 450 of the cooling liquid to form an annular loop, the cooling liquid is stored in the liquid storage tank 410, the liquid delivery pump 420 is used for driving the cooling liquid to circulate along the annular loop, heat on the first wiring terminal block 200 and the second wiring terminal block 300 can be conducted to the heat dissipation row 430 through the cooling liquid, and then the heat on the heat dissipation row 430 is dissipated through the fan 440, so that the purpose of dissipating heat of the first wiring terminal block 200 and the second wiring terminal block 300 is achieved, the junction box has good heat dissipation, and safety risks caused by overhigh temperature under the condition of high current are avoided. The junction box is compact in structure, safe and reasonable in design, diversified in wiring mode, high in heat dissipation efficiency through the liquid cooling device 400 and capable of meeting the wiring conditions of large current and large heat productivity.
The specific structure and principle of the junction box according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.
In some embodiments, the insulating case 100 may be a square case, the top of which may be opened, and an insulating case cover may be disposed at the opening, and the insulating case cover may be detachably connected to the square case by, for example, bolts, as shown in fig. 2. The first through hole unit 110 may be disposed on the bottom surface of the square box body, and the first through hole unit 110 may include three first through holes 111 sequentially disposed, and the first through holes 111 may be rectangular through holes. Connecting wires led out from two sides of each group of three-phase windings can extend into the insulating box body 100 from the rectangular threading holes. The second through hole unit 120 may be disposed on a side of the square case, and the second through hole unit 120 may include a plurality of second through holes 121, and the second through holes 121 are used to pass through external connection lines of three-phase electricity. In a specific implementation, each phase of the three-phase power may be provided with, for example, four external connection lines, and the three-phase power is provided with twelve external connection lines in total, and the second through hole unit 120 may include twelve second through holes 121, where each second through hole 121 may be perforated with one external connection line. It should be noted that the junction box is not limited to a square box body, but may be hexagonal, cylindrical or other shapes.
In a preferred embodiment, the outer side of the insulation case 100 may be convexly provided with a wire part 140, a wire cavity is provided in the wire part 140, the wire cavity is in communication with the inner cavity of the insulation case 100, and the second wire passing hole unit 120 may be disposed at an end of the wire part 140 remote from the insulation case 100 and in communication with the wire cavity. For example, a rounded rectangular through hole may be disposed on a side surface of the insulating box body 100, the insulating box body 100 may extend outward from an edge of the rounded rectangular through hole to form a rounded rectangular cylinder, an end plate may be disposed at an end of the rounded rectangular cylinder away from the insulating box body 100, the rounded rectangular cylinder and the end plate form the wire portion 140, a wire cavity is formed by a cylinder cavity of the rounded rectangular cylinder, and a plurality of second threading holes 121 may be formed on the end plate to form the second threading hole unit 120. The lead portion 140 can extend the length of the extension of the external connection line of the three-phase power, and thus the external connection line has a sufficient bending space. Further, a threaded sleeve 122 for fixing the external connection line can be further arranged in the second threading hole 121, and the external connection line can be firmly connected in the second threading hole 121 through the threaded sleeve 122, so that the second threading hole 121 is prevented from loosening.
As shown in fig. 2 and 3, in some embodiments, the insulating support 130 is protruded on the bottom surface of the insulating case 100, and an insulating plate 500 is provided on the top of the insulating support 130, and the first and second terminal blocks 200 and 300 may be mounted on the insulating plate 500. For example, one insulation support 130 may be disposed at each side of the first string hole unit 110, the insulation support 130 and the insulation case 100 may be in an integrated structure, and a screw hole may be disposed on the insulation support 130. The insulating plate 500 may be a rectangular insulating plate 500, and the insulating plate 500 may be fixedly coupled to the two insulating supports 130 by bolts or screws. The first terminal block 200 and the three second terminal blocks 300 may be disposed on the insulating plate 500 at intervals from each other, for example, may be fixedly coupled to the insulating plate 500 by bolts. In this way, the first terminal block 200 and the second terminal block 300 can be provided with a sufficient distance from each surface of the insulating case 100, and the safety of the terminal block can be improved.
In a preferred embodiment, the insulating plate 500 may be provided with three slots 510 at intervals, and the three second terminal blocks 300 are respectively clamped in the three slots 510 and fixedly connected to the insulating plate 500 by, for example, bolts. Like this, can be that second binding post piece 300 and insulation board 500 are connected more firmly, avoid second binding post piece 300 to take place the position, also can strengthen the insulating nature between the three second binding post piece 300, can also increase the creepage distance between the three, improve factor of safety.
Further, a bar-shaped through hole 520 may be provided at a position of the middle of the insulating plate 500 facing the first string passing hole unit 110, the first terminal block 200 is disposed at one side of the bar-shaped through hole 520, and the three second terminal blocks 300 are sequentially disposed at the other side of the bar-shaped through hole 520. In this way, the connecting wires extending from the first wire passing hole unit 110 to both sides of the three-phase winding may extend to the upper side of the insulating plate 500 through the bar-shaped through hole 520, and be connected with the first and second terminal blocks 200 and 300, respectively, with compact and smart structural design.
In some embodiments, the first connection terminal block 200 may be a rectangular conductive block, such as a rectangular copper block, and the first connection unit 210 may be a connection hole formed on the rectangular conductive block, as shown in fig. 4. For example, each of the first wiring hole units may include two wiring screw holes, which may be arranged laterally or vertically. Three screw holes, for example, may be formed at the bottom of the rectangular conductive block, and the rectangular conductive block may be connected to the insulating plate 500 through the three screw holes.
In some embodiments, as shown in fig. 6, the first connection terminal block 200 may further have a plurality of first infusion holes 220 penetrating through two ends thereof, and the plurality of first infusion holes 220 are connected in series through an infusion line 450. In a specific embodiment, the number of the first infusion holes 220 may be according to the heat dissipation requirement and the spatial configuration of the first connection terminal block 200, for example, six first infusion holes 220 parallel to each other may be formed on the rectangular conductive block along the length direction thereof, and the first infusion holes 220 may be connected through infusion tubes, so as to form a structure sequentially connected in series.
In some embodiments, as shown in fig. 5, the second terminal block 300 may have a stepped shape, and the third terminal units 320 are respectively disposed on the stepped surfaces, so as to reserve a sufficient wiring space for the terminals of the external connection lines of the three-phase power, and avoid interference between the terminals. For example, the second terminal block 300 may include a first step portion and a second step portion located at an upper layer of the first step portion, that is, the second terminal block 300 may be a conductive block having an L-shaped cross section. One side of the second step portion away from the first step portion may be provided with, for example, two wire connection screw holes to form the second wire connection unit 310. Two wire connection screw holes may be formed on the top surfaces of the first and second step portions, respectively, to form a third wire connection unit 320, so that a connection wire for conveniently leading out the three-phase winding and an external connection wire for three-phase power are connected with the second wire connection terminal block 300.
Specifically, the second terminal block 300 may also be a brass block, a copper block, or a silver-copper alloy block, for example. The copper block has better stability, the minimum effective sectional area can reach 6000mm 2, the effective value of the single-phase voltage of the junction box can be 220V for ensuring safety, the bearing current can be less than or equal to 6000A, the electric gap and the creepage distance exceed relevant regulations in the general safety requirement of small and medium-sized rotating motors in national standard GB14711-2013, and other parameters also accord with the national standard, so that the safety of the junction box is ensured.
With continued reference to fig. 6, in some embodiments, the three second connection terminal blocks 300 are each provided with a plurality of second infusion holes 330 extending through two ends thereof, and the second infusion holes 330 on the three second connection terminal blocks 300 are connected in series through the infusion line 450. For example, four second infusion holes 330 parallel to each other may be formed in the second connection terminal block 300 in the transverse direction, and the second infusion holes 330 penetrate through the second connection terminal block 300. Because the three second connection terminal blocks 300 are sequentially arranged, the second connection holes 330 are also in one-to-one correspondence, the second connection holes located at the same position on the adjacent second connection terminal blocks 300 can be connected in series through infusion tubes, and the second connection holes 330 located at one end of the same second connection terminal block 300 can be connected in series through, for example, U-shaped infusion tubes, so that all the second connection holes 330 on the three second connection terminal blocks 300 are sequentially connected in series, and the cooling liquid can sequentially flow through each second connection hole on the second connection terminal block 300 and take away heat on the second connection terminal block 300.
Specifically, the infusion tube can be a acrylic tube, and the acrylic tube has excellent transparency, chemical stability, insulativity and high temperature resistance, so that the stability of the infusion tube is ensured. The cooling liquid can be special insulating cooling liquid or cooling oil. The heat dissipating row 430 may be made of a pure thin copper sheet with high heat conductivity, and the above components in the liquid cooling device 400 ensure that the liquid cooling device 400 has an excellent cooling effect, and can rapidly reduce the temperature of the first and second terminal blocks 200 and 300 of the direct heat source in the terminal box, so that the terminal box can be maintained within a reasonable temperature range even under a large current without damaging the terminal box and the connection wires. In order to increase the cooling effect in the specific implementation, the heat dissipation power of the liquid cooling device 400 may also be increased by increasing the number or power of the fans 440.
The embodiment of the invention also provides a permanent magnet motor, which comprises a stator, a rotor and the junction box, wherein the stator is provided with three-phase windings, connecting wires led out from one sides of three groups of windings in the three-phase windings are connected together through the first junction terminal block 200 of the junction box to form a neutral point of the permanent magnet motor, connecting wires led out from the other sides of the three groups of windings in the three-phase windings are respectively connected with the three second junction terminal blocks 300, and the three second junction terminal blocks 300 are respectively connected with external connecting wires of three phases in the three-phase motor, so that the three-phase windings of the permanent magnet motor are internally connected through the junction box and are also connected with external connecting wires of the three-phase motor. The junction box has the advantages of good heat dissipation effect and high safety coefficient, so that the permanent magnet motor using the junction box also has the advantage of high safety coefficient, and safety accidents are not easy to occur even under the condition of high current.
The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this invention will occur to those skilled in the art, and are intended to be within the spirit and scope of the invention.
Claims (8)
1. A junction box for a permanent magnet motor comprising three-phase windings, comprising:
the insulation box body is provided with a first threading hole unit and a second threading hole unit respectively, the first threading hole unit is used for threading connecting wires led out from two sides of the three-phase winding, and the second threading hole unit is used for threading external connecting wires of the three-phase power supply;
The first wiring terminal block is arranged in the insulating box body, three first wiring units are arranged on the first wiring terminal block, and the three first wiring units are used for being connected with connecting wires led out from one side of one winding of the three-phase windings respectively;
The three second wiring terminal blocks are arranged in the insulation box body in an insulated mode, the three second wiring terminal blocks are arranged with the first wiring terminal blocks in an insulated mode, a second wiring unit and a third wiring unit are arranged on the second wiring terminal blocks, the second wiring units of the three second wiring terminal blocks are used for being connected with connecting wires led out from the other side of one winding of the three-phase windings respectively, and the third wiring unit is used for being connected with external connecting wires of one phase of three-phase electricity;
The liquid cooling device comprises a liquid storage tank, an infusion pump, a heat radiation row and a fan, wherein the heat radiation row is arranged on the outer side of the insulation box body, the fan is used for radiating heat of the heat radiation row, and the liquid storage tank, the infusion pump, the first wiring terminal block, the second wiring terminal block and the heat radiation row are connected in series through an infusion pipeline of cooling liquid to form an annular loop so as to conduct heat on the first wiring terminal block and the second wiring terminal block to the heat radiation row through the cooling liquid;
The first wiring terminal block is provided with a plurality of first infusion holes penetrating through two ends of the first wiring terminal block, and the first infusion holes are connected in series through infusion pipelines;
The three second connecting terminal blocks are respectively provided with a plurality of second infusion holes penetrating through two ends of the second connecting terminal blocks, and the second infusion holes on the three second connecting terminal blocks are connected in series through infusion pipelines.
2. The junction box according to claim 1, wherein an insulating support is provided on the bottom surface of the insulating box body in a protruding manner, an insulating plate is provided on top of the insulating support, and the first junction terminal block and the second junction terminal block are both mounted on the insulating plate.
3. The junction box according to claim 2, wherein three clamping grooves are formed in the insulating plate at intervals, and the three second junction terminal blocks are respectively clamped in the three clamping grooves.
4. The junction box according to claim 2, wherein the first threading hole unit is arranged on the bottom surface of the insulating box body, a strip-shaped through hole is arranged at a position, opposite to the first threading hole unit, of the middle part of the insulating plate, the first junction terminal block is arranged on one side of the strip-shaped through hole, and the three second junction terminal blocks are sequentially arranged on the other side of the strip-shaped through hole.
5. The junction box according to claim 4, wherein the first threading hole unit includes three sequentially disposed first threading holes provided on a bottom surface of the insulating box body.
6. The junction box according to claim 1, wherein a wire portion is provided protruding outside the insulating box body, a wire cavity is provided in the wire portion, the wire cavity is communicated with the inner cavity of the insulating box body, and the second threading hole unit is provided at one end of the wire portion away from the insulating box body and is communicated with the wire cavity.
7. The junction box according to claim 6, wherein the second threading hole unit includes a plurality of second threading holes, and a screw sleeve for fastening the external connection wire is provided in the second threading holes.
8. A permanent magnet motor comprising a stator and a rotor, said stator having three-phase windings provided thereon, further comprising a junction box according to any one of claims 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010058822.0A CN113141084B (en) | 2020-01-19 | 2020-01-19 | Junction box and permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010058822.0A CN113141084B (en) | 2020-01-19 | 2020-01-19 | Junction box and permanent magnet motor |
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| Publication Number | Publication Date |
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| CN113141084A CN113141084A (en) | 2021-07-20 |
| CN113141084B true CN113141084B (en) | 2024-07-09 |
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| CN202010058822.0A Active CN113141084B (en) | 2020-01-19 | 2020-01-19 | Junction box and permanent magnet motor |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211018507U (en) * | 2020-01-19 | 2020-07-14 | 北京明诚技术开发有限公司 | Junction box and permanent magnet motor |
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| WO2013146433A1 (en) * | 2012-03-30 | 2013-10-03 | 本田技研工業株式会社 | Rotating electrical machine |
| US9543672B2 (en) * | 2015-01-13 | 2017-01-10 | Kabushiki Kaisha Toyota Jidoshokki | Terminal block device |
| CN206669597U (en) * | 2017-03-21 | 2017-11-24 | 江苏精科新能源科技有限公司 | A kind of solar street light terminal box |
| CN206834939U (en) * | 2017-05-31 | 2018-01-02 | 长城汽车股份有限公司 | Motor winding wire deriving structure and motor |
| EP3490115A1 (en) * | 2017-11-28 | 2019-05-29 | Siemens Aktiengesellschaft | Integrated terminal box of a rotational dynamo-electric machine |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211018507U (en) * | 2020-01-19 | 2020-07-14 | 北京明诚技术开发有限公司 | Junction box and permanent magnet motor |
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| CN113141084A (en) | 2021-07-20 |
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