CN214799293U - Multi-stage anti-interference device for motor controller - Google Patents
Multi-stage anti-interference device for motor controller Download PDFInfo
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- CN214799293U CN214799293U CN202120263811.6U CN202120263811U CN214799293U CN 214799293 U CN214799293 U CN 214799293U CN 202120263811 U CN202120263811 U CN 202120263811U CN 214799293 U CN214799293 U CN 214799293U
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Abstract
The utility model relates to a multi-stage anti-interference device for a motor controller, which comprises a direct current copper bar component, a first-stage anti-interference device, a second-stage anti-interference device, a third-stage anti-interference device, a fourth-stage anti-interference device, a fifth-stage anti-interference device, a first grounding copper bar, a second grounding copper bar and a high integrated bracket for supporting the whole device, wherein the first-stage anti-interference device is a coiled annular nano crystal material film structure; the secondary anti-jamming device comprises a pair of high-frequency suppression safety capacitors which are grounded in parallel, the tertiary anti-jamming device comprises a pair of intermediate-frequency suppression safety capacitors which are grounded in parallel, the quaternary anti-jamming device comprises a pair of low-frequency suppression safety capacitors which are grounded in parallel, and the quaternary anti-jamming device, the quaternary anti-jamming device and the quaternary anti-jamming device are respectively connected with a positive busbar and a negative busbar of the direct-current copper bar assembly; the five-stage anti-interference device is made of ferrite materials, and the middle part of the direct current copper bar assembly penetrates through a through hole of the five-stage anti-interference device. Compared with the prior art, the utility model has the advantages of good electromagnetic compatibility, compact structure, space utilization are high.
Description
Technical Field
The utility model belongs to the technical field of the anti-interference technique of machine controller and specifically relates to a machine controller is with multistage anti jamming unit is related to.
Background
With the rapid development of new energy automobiles, in order to meet higher performance requirements and better driving experience of vehicles, high-voltage devices on electric automobiles have higher and higher power, low-voltage electronic equipment is more and more, and the electromagnetic environment of the whole automobile is more and more complex.
The motor controller is used as a core power device of the electric automobile, the power module generates transient and variable voltage and current in the high-frequency switching process, the variable voltage and current cause certain pollution to a high-voltage power supply system of the whole automobile, and meanwhile, the high-frequency signal also has certain influence on the reliability of low-voltage electronic equipment of the whole automobile in an electromagnetic radiation mode. For this reason, most of the whole vehicle factories now commonly require to meet EMC test requirements above the whole vehicle Class3 in newly developed electric drive systems. The traditional motor controller on the market generally adopts the design of a film capacitor and a Y capacitor, and a magnetic ring is added on the basis of part of the controllers, namely, a first-level anti-interference measure is added to meet the requirement of the whole vehicle loaded Class3 at most, but the traditional design scheme has little effect on the electromagnetic interference on the whole vehicle loaded Class4 and the whole vehicle loaded Class5, and is very easy to catch some people, so that an anti-interference device with better electromagnetic interference suppression effect and compact structure is urgently required to be designed to meet the requirement of the whole vehicle on the higher-strength electromagnetic interference of the motor controller.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a multistage anti jamming unit for machine controller that restrain the electromagnetic interference effect better, and compact structure in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a multi-stage anti-interference device for a motor controller comprises a direct current copper bar component, a first stage anti-interference device, a second stage anti-interference device, a third stage anti-interference device, a fourth stage anti-interference device, a fifth stage anti-interference device, a first grounding copper bar, a second grounding copper bar and a high integrated bracket for supporting the whole device,
a first through hole is formed in one end, close to the electrical connection end of the direct current copper bar assembly, of the high integration support, the primary anti-interference device is of an annular structure and is installed on the outer side of the first through hole, and the primary anti-interference device is of a wound nano crystal material thin film structure;
the direct-current copper bar assembly comprises a direct-current copper bar assembly, a secondary anti-jamming device, a tertiary anti-jamming device and a quaternary anti-jamming device, wherein an electrical connecting end of the direct-current copper bar assembly is provided with a positive busbar and a negative busbar, the secondary anti-jamming device comprises a pair of high-frequency inhibition safety-regulation capacitors which are connected in parallel to ground, the tertiary anti-jamming device comprises a pair of intermediate-frequency inhibition safety-regulation capacitors which are connected in parallel to ground, the quaternary anti-jamming device comprises a pair of low-frequency inhibition safety-regulation capacitors which are connected in parallel to ground, and the secondary anti-jamming device, the tertiary anti-jamming device and the quaternary anti-jamming device are respectively connected with the positive busbar and the negative busbar; the second-level interference suppressor is also connected with the first grounding copper bar, and the fourth-level interference suppressor is also connected with the second grounding copper bar;
the five-stage anti-interference device is made of ferrite materials, a second through hole is formed in the middle of the five-stage anti-interference device, and the middle of the direct current copper bar assembly penetrates through the second through hole.
Furthermore, the five-stage anti-interference device comprises a first magnetic block and a second magnetic block, the second magnetic block is provided with a groove, and the first magnetic block is connected with the second magnetic block to form the second through hole.
Furthermore, multistage anti jamming unit still includes the jump ring clamping piece, high integrated support is equipped with the square groove that is used for installing five grades of anti jamming unit, and the both sides that this square groove is relative all are equipped with two draw-in grooves, the both sides of jump ring clamping piece all are equipped with two card feet, the card foot of jump ring clamping piece is connected and is passed through the draw-in groove of square groove connects five grades of anti jamming unit.
Furthermore, the clamp spring clamping piece is of an arch structure, and the clamping foot is of a V-shaped structure.
Furthermore, the capacitance of the high-frequency suppression safety capacitor is within the range of 8-12 nf;
the capacitance of the medium-frequency suppression safety-type capacitor is within the range of 50-300 nf;
the capacitance of the low-frequency suppression safety capacitor is within the range of 320-350 nf.
Furthermore, the multistage anti-interference device also comprises a circuit protector, and the circuit protector is connected with the direct current copper bar assembly.
Furthermore, one end of the high integration bracket is provided with a first encapsulation groove, the first encapsulation groove is positioned at the outer side of the first through hole, the upper surface of the high integration bracket is provided with a second encapsulation groove and a third encapsulation groove, the lower surface of the high integration bracket is provided with a fourth encapsulation groove, the second encapsulation groove comprises two rectangular grooves, the two rectangular grooves are distributed at two sides of the high integration bracket, and the third encapsulation groove is positioned between the two rectangular grooves;
the first-stage anti-interference device is installed in the first encapsulating groove, the second-stage anti-interference device is installed in the second encapsulating groove, the third-stage anti-interference device is installed in the third encapsulating groove, and the fourth-stage anti-interference device is installed in the fourth encapsulating groove.
Furthermore, the positive busbar and the negative busbar are respectively provided with a first caliper, a second caliper and a third caliper, the first caliper is electrically connected with the second-stage anti-interference device, the second caliper is electrically connected with the third-stage anti-interference device, and the third caliper is electrically connected with the fourth-stage anti-interference device.
Further, the side of the third encapsulating groove is provided with a strip-shaped bus duct, the bottom of the strip-shaped bus duct is provided with two square holes, and the square holes are used for installing the third calipers.
Further, the lower surface of the high integrated support is provided with two fourth potting grooves, a threaded hole is formed between the two fourth potting grooves and used for fixing the second grounding copper bar, and the side wall of each fourth potting groove is provided with a plurality of square notches, so that the third calipers can clamp the wiring harness conveniently.
Compared with the prior art, the utility model has the advantages of it is following:
(1) the anti-interference device has excellent electromagnetic compatibility, integrates five levels of anti-interference devices, wherein the primary anti-interference device is formed by winding a nano crystal material film and can inhibit high-frequency electromagnetic noise input by a battery end of a finished automobile, the secondary anti-interference device is a pair of safety capacitors which are grounded in parallel and have 10nf and can well inhibit high-frequency common mode interference on a high-voltage wire harness of the finished automobile, the tertiary anti-interference device is a safety capacitor which is connected with the anode and the cathode of a direct current copper bar assembly and can well inhibit intermediate frequency differential mode interference, the quaternary anti-interference device is a pair of safety capacitors which are grounded in parallel and have 330nf and can well inhibit low-frequency common mode interference on the high-voltage wire harness of the finished automobile, the quinary anti-interference device is formed by sintering and pressing ferrite materials and can inhibit low-frequency electromagnetic noise input by a battery end of the finished automobile, and the quinary links are provided for inhibiting high, medium and low-frequency noise of high-voltage input current, the three-stage interference unit has good inhibition effect, the current entering the motor controller from the outside is changed into purer current, the interference to other internal devices is reduced, the anti-interference capability of the whole system is improved, meanwhile, the interference to external electronic devices caused by the conduction of some electromagnetic interference inside the system is prevented, the front three-stage interference unit can be selected according to actual requirements to meet the EMC test requirement of the whole vehicle Class4, and all five-stage interference units are selected to meet the EMC test requirement of the whole vehicle Class5 and above.
(2) The utility model discloses terminal surface is equipped with first encapsulation groove before well high integrated support, and the upper surface is equipped with second, third encapsulation groove and bus duct, and the lower surface is equipped with fourth encapsulation groove, right side and is equipped with the square groove, has compact structure, characteristics that space utilization is high, moreover, can require to carry out selectivity adaptation according to whole car EMC test level, uses in a flexible way like this, matches the ability reinforce.
(3) The utility model discloses well direct current copper bar subassembly, ground copper bar all adopt the assembly mode of calliper with being connected of interference killing feature, avoid adopting complicated technology, reduce the use of bolt, simple process, flexible assembly, reliability height are fit for the volume production.
(4) The utility model discloses well one-level all adopts the mode of embedment to fix in high integrated support to the level four anti-interference ware, and the five-level anti-interference ware passes through jump ring clamping piece card in the square groove of support, and whole integrated device has advantages such as simple structure, integrated level height, easy assembly.
Drawings
Fig. 1 is a schematic structural view of the front side of the multi-stage anti-interference device of the present invention;
fig. 2 is a schematic structural view of the back of the multi-stage anti-interference device of the present invention;
fig. 3 is a schematic structural view of the front side of the highly integrated bracket of the present invention;
fig. 4 is a schematic structural view of the back of the high integrated bracket of the present invention;
fig. 5 is a schematic structural view of the dc copper bar assembly of the present invention;
fig. 6 is a schematic structural view of the circlip clip of the present invention;
fig. 7 is a schematic structural diagram of a five-stage anti-interference device of the present invention;
in the figure, 1, a high-integration bracket, 2, a first-stage anti-jamming device, 3, a second-stage anti-jamming device, 4, a third-stage anti-jamming device, 5, a fourth-stage anti-jamming device, 6, a fifth-stage anti-jamming device, 7, a direct-current copper bar assembly, 8, a first grounding copper bar, 9, a clamp spring clamping piece, 10, a circuit protector, 11, a second grounding copper bar, 101, a first encapsulation groove, 102, a second encapsulation groove, 103, a first grounding hole, 104, a square hole, 105, a circuit protection groove, 106, a second grounding hole, 107, a bus duct, 108, a square groove, 109, a third encapsulation groove, 110, a fourth encapsulation groove, 111, a clamping groove, 112, a notch, 601, a first magnetic block, 602, a second magnetic block 701, a positive busbar, 702, a negative busbar, 703, a first caliper, 704, a second caliper, 705, a third caliper, 901 and a clamping pin.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment provides a multi-stage anti-interference device for a motor controller, which comprises a direct current copper bar component 7, a first-stage anti-interference device 2, a second-stage anti-interference device 3, a third-stage anti-interference device 4, a fourth-stage anti-interference device 5, a fifth-stage anti-interference device 6, a first grounding copper bar 8, a second grounding copper bar 11 and a high integrated bracket 1 for supporting the whole device,
one end of the high integration support 1, which is close to the electrical connection end of the direct current copper bar assembly 7, is provided with a first through hole 113, the primary anti-interference device 2 is of an annular structure and is arranged on the outer side of the first through hole 113, and the primary anti-interference device 2 is of a wound nano-crystal material thin film structure;
an electrical connection end of the direct current copper bar assembly 7 is provided with a positive busbar 701 and a negative busbar 702, the secondary anti-jamming device 3 comprises a pair of high-frequency inhibition safety-regulation capacitors which are connected in parallel and grounded, the tertiary anti-jamming device 4 comprises a pair of intermediate-frequency inhibition safety-regulation capacitors which are connected in parallel and grounded, the quaternary anti-jamming device 5 comprises a pair of low-frequency inhibition safety-regulation capacitors which are connected in parallel and grounded, and the secondary anti-jamming device 3, the tertiary anti-jamming device 4 and the quaternary anti-jamming device 5 are respectively connected with the positive busbar 701 and the negative busbar 702; the secondary interference suppressor 3 is also connected with a first grounding copper bar 8, and the fourth-stage interference suppressor 5 is also connected with a second grounding copper bar 11;
the five-stage anti-interference device 6 is made of ferrite materials, a second through hole is formed in the middle of the five-stage anti-interference device 6, and the middle of the direct current copper bar assembly 7 penetrates through the second through hole.
The working principle of the multistage anti-interference device is as follows: the high-voltage wire harness at the finished automobile end penetrates through the primary anti-interference device 2 and then is electrically connected with the input end of the direct-current copper bar assembly 7, and the primary anti-interference device 2 is formed by winding a nano-crystal material film and can inhibit high-frequency electromagnetic noise input at the finished automobile battery end; the current flowing through the direct current copper bar assembly 7 enters the direct current copper bar assembly 7, and the secondary anti-interference devices 3 electrically connected to the direct current copper bar assembly 7 are a pair of high-frequency suppression safety capacitors which are grounded in parallel, so that high-frequency common-mode interference on a high-voltage wire harness of the whole vehicle can be well suppressed, and voltage and current are stabilized; then, the current flows into a third-level anti-interference device 4, the third-level anti-interference device 4 is an intermediate frequency suppression safety-regulation capacitor connected with the anode and the cathode of a direct current copper bar assembly 7, intermediate frequency differential mode interference brought on a high-voltage wire harness of the whole vehicle can be well suppressed, and voltage and current are stabilized; the four-stage anti-interference device 5 electrically connected with the direct current copper bar assembly 7 is a pair of low-frequency suppression safety capacitors which are grounded in parallel, so that low-frequency common-mode interference on a high-voltage wire harness of the whole vehicle can be well suppressed, and voltage and current are stabilized; and finally, the current flowing through the direct current copper bar assembly 7 passes through the five-stage anti-interference device 6, and the five-stage anti-interference device 6 is formed by sintering and pressing ferrite materials and can inhibit low-frequency electromagnetic noise input by a battery end of the whole vehicle. Finally, through the inhibition of the five links, the current entering the motor controller from the outside is changed into a relatively pure current, the interference on other internal devices is reduced, the anti-interference capability of the whole system is improved, and the interference on external electronic devices caused by the conduction and removal of some electromagnetic interference in the system is also prevented.
As a preferred embodiment, the five-stage interference suppressor 6 includes a first magnetic block and a second magnetic block, the second magnetic block is provided with a groove, and the first magnetic block is connected with the second magnetic block to form a second through hole.
Multistage anti jamming unit still includes jump ring clamping piece 9, and highly integrated support 1 is equipped with the square groove that is used for installing five-stage anti jamming unit 6, and the both sides that this square groove is relative all are equipped with two draw-in grooves, and the both sides of jump ring clamping piece 9 all are equipped with two card feet, and five-stage anti jamming unit 6 is connected through the draw-in groove in square groove to the card foot of jump ring clamping piece 9 connection.
In a preferred embodiment, the clip spring clip 9 has an arch-shaped structure and the clip legs have a V-shaped structure.
In a preferred embodiment, the capacitance of the high-frequency suppressing safety capacitor is within the range of 8-12nf, preferably 10 nf;
the capacitance of the medium-frequency suppression safety capacitor is within the range of 50-300 nf;
the capacitance of the low frequency suppressor capacitor is within the range of 320-350nf, preferably 330 nf.
In a preferred embodiment, the multi-stage anti-interference device further comprises a circuit protector 10, and the circuit protector 10 is connected with the direct current copper bar assembly 7.
As a preferred embodiment, one end of the high integrated bracket 1 is provided with a first potting groove 101, the first potting groove 101 is located outside the first through hole 113, the upper surface of the high integrated bracket 1 is provided with a second potting groove 102 and a third potting groove 109, the lower surface of the high integrated bracket 1 is provided with a fourth potting groove 110, the second potting groove 102 comprises two rectangular grooves, the two rectangular grooves are distributed on two sides of the high integrated bracket 1, and the third potting groove 109 is located between the two rectangular grooves;
the first-stage interference suppressor 2 is installed in the first encapsulating tank 101, the second-stage interference suppressor 3 is installed in the second encapsulating tank 102, the third-stage interference suppressor 4 is installed in the third encapsulating tank 109, and the fourth-stage interference suppressor 5 is installed in the fourth encapsulating tank 110.
In a preferred embodiment, the positive busbar 701 and the negative busbar 702 are respectively provided with a first caliper 703, a second caliper 704 and a third caliper 705, the first caliper 703 is electrically connected with the secondary interference suppressor 3, the second caliper 704 is electrically connected with the tertiary interference suppressor 4, and the third caliper 705 is electrically connected with the quaternary interference suppressor 5.
In a preferred embodiment, the third potting groove 109 has a side edge provided with an elongated bus duct, and the bottom of the elongated bus duct is provided with two square holes for installing the third clamping pliers 705.
As a preferred embodiment, the lower surface of the high integration bracket 1 is provided with two fourth encapsulating grooves 110, a threaded hole is formed between the two fourth encapsulating grooves 110 for fixing the second ground copper bar 11, and the side wall of the fourth encapsulating groove 110 is provided with a plurality of square notches for the third clamp 705 to clamp the wiring harness.
The above preferred embodiments are combined to obtain an optimal embodiment, and a specific implementation process of the optimal embodiment is described below.
As shown in fig. 1 and fig. 2, this embodiment provides a multistage interference suppressor device for a motor controller, which includes a highly integrated bracket 1, and a first-stage interference suppressor 2, a second-stage interference suppressor 3, a third-stage interference suppressor 4, a fourth-stage interference suppressor 5, a fifth-stage interference suppressor 6, a dc copper bar assembly 7, a first ground copper bar 8, a second ground copper bar 11, a snap spring clip 9, and a circuit protector, which are assembled with the highly integrated bracket.
The primary interference suppressor 2, the secondary interference suppressor 3, the tertiary interference suppressor 4 and the quaternary interference suppressor 5 are respectively encapsulated in a first encapsulation groove 101, a second encapsulation groove 102, a third encapsulation groove 109 and a fourth encapsulation groove 110 of the highly integrated bracket 1, the quinary interference suppressor 6 is installed in a square groove 108 of the highly integrated bracket 1, a clamp spring clamp 9 is clamped in a clamp groove 111 to clamp the quinary interference suppressor 6, a direct current copper bar assembly 7 passes through the quinary interference suppressor 6 and is arranged in a bus groove 107, a first clamp 703 of the direct current copper bar assembly 7 is electrically connected with a terminal of the secondary interference suppressor 3, a second clamp 704 of the direct current copper bar assembly 7 is electrically connected with a terminal of the tertiary interference suppressor 4, a third clamp of the direct current copper bar assembly 7 is electrically connected with a terminal 705 of the quaternary interference suppressor 5, a first grounding copper bar 8 is installed in a first grounding hole 103 of the highly integrated bracket 1 and is electrically connected with the other terminal of the secondary interference suppressor 3, the second ground copper bar 11 is installed between the fourth encapsulating grooves 110 and electrically connected with the other terminal of the fourth interference suppressor 5, and the circuit protector 10 is installed in the circuit protecting groove 105 of the high integrated bracket 1 and electrically connected with the direct current copper bar assembly 7.
The high-voltage wire harness at the finished automobile end penetrates through the primary anti-interference device 2 and then is electrically connected with the input end of the direct-current copper bar assembly 7, and the primary anti-interference device 2 is formed by winding a nano-crystal material film and can inhibit high-frequency electromagnetic noise input at the finished automobile battery end; the current flowing through the direct current copper bar assembly 7 enters the direct current copper bar assembly 7, and the secondary anti-interference devices 3 electrically connected to the direct current copper bar assembly 7 are a pair of 10nf safety capacitors which are grounded in parallel, so that high-frequency common-mode interference on a high-voltage wire harness of the whole vehicle can be well inhibited, and voltage and current are stabilized; then, the current flows into the three-level anti-interference device 4, the three-level anti-interference device 4 is a safety capacitor connected with the anode and the cathode of the direct current copper bar assembly 7, the medium-frequency differential mode interference brought on the high-voltage wire harness of the whole vehicle can be well inhibited, and the voltage and the current are stabilized; the four-stage anti-interference device 5 electrically connected with the direct current copper bar assembly 7 is a pair of 330nf safety capacitors which are grounded in parallel, so that low-frequency common-mode interference on a high-voltage wire harness of the whole vehicle can be well inhibited, and voltage and current are stabilized; and finally, the current flowing through the direct current copper bar assembly 7 passes through the five-stage anti-interference device 6, and the five-stage anti-interference device 6 is formed by sintering and pressing ferrite materials and can inhibit low-frequency electromagnetic noise input by a battery end of the whole vehicle. Finally, through the inhibition of the five links, the current entering the motor controller from the outside is changed into a relatively pure current, the interference on other internal devices is reduced, the anti-interference capability of the whole system is improved, and the interference on external electronic devices caused by the conduction and removal of some electromagnetic interference in the system is also prevented.
In the embodiment, the primary anti-interference device 2 is made of a Mn-Zn and Ni-Zn composite material through sintering and is used for effectively inhibiting low-frequency noise in a circuit.
As shown in fig. 3, a first potting groove 101 is formed in the front end face of the high integrated bracket 1, the first potting groove 101 is in an annular runway shape, a second potting groove 102 and a third potting groove 109 are formed in the upper surface of the first potting groove 101, the second potting groove 102 is two rectangular grooves, and the two rectangular grooves are symmetrically arranged on two sides of the high integrated bracket 1; the third potting groove 109 is a rectangular structure, and is disposed at the symmetry axis of the second potting groove 102.
As shown in fig. 3, a strip-shaped bus duct 107 is disposed on a side edge of a third encapsulating groove 109 on the upper surface of the high integrated bracket 1, two through square holes 104 are disposed at the bottom of the bus duct 107, a rectangular circuit protection groove 105 is disposed on the other side of the bus duct 107, a circular second grounding hole 106 is disposed at the bottom of the circuit protection groove 105, and the second grounding hole 106 corresponds to a mounting hole of a second grounding copper bar. The right side of the high integration bracket 1 is provided with a square groove 108 for arranging a five-stage interference suppressor. The lateral wall of the square groove 108 is provided with 4 square clamping grooves 111, one side of each square clamping groove 111 is provided with a 30-degree slope, and the other side of each square clamping groove 111 is provided with a round angle.
As shown in fig. 4, two rectangular fourth potting grooves 110 are formed in the lower end surface of the high integrated bracket 1, and a threaded hole is formed between the two fourth potting grooves 110 and is used for fixing the second ground copper bar 11; the side wall of the fourth potting groove 110 is provided with three square notches 112, which is convenient for the third caliper to clamp the wiring harness.
As shown in fig. 5, the direct current copper bar assembly 7 is a laminated hot-pressed copper bar, and includes a positive plate 701 and a negative plate 702, and the direct current copper bar assembly 7 is provided with a first caliper 703, a second caliper 704 and a third caliper 705.
As shown in fig. 6, the clip spring clip 9 is a sheet metal part with an arch structure, the clip spring clip 9 is provided with 4 clip legs 901, and the clip legs 901 are in a V-shaped structure.
As shown in fig. 7, the five-stage anti-interference device 6 includes a first magnetic block 601 and a second magnetic block 602, the first magnetic block 601 is a square flat plate structure, the second magnetic block 602 is a U-shaped structure, and the five-stage anti-interference device is made of a nano-crystalline material.
The specific assembling process of the multistage anti-interference device for the motor controller is as follows:
firstly, a first-stage interference suppressor, a second-stage interference suppressor, a third-stage interference suppressor and a fourth-stage interference suppressor are encapsulated in first to fourth encapsulating grooves respectively. And then, fixing the two first grounding copper bars in the first grounding holes, and clamping and electrically connecting calipers of the two first grounding copper bars with terminals of the secondary anti-interference device. And then fixing a second grounding copper bar on a bolt hole in the middle of the fourth potting groove, and clamping and electrically connecting calipers of the second grounding copper bar with a terminal of the fourth-stage anti-interference device.
Secondly, the direct current copper bar assembly penetrates through the five-stage anti-interference device, the bus copper bar is arranged in the bus duct, and the five-stage anti-interference device is arranged in a square groove on the right side of the support. And then, clamping the five-stage anti-interference device by using a clamping pin of the clamp spring clamping piece to penetrate through a square hole on the side wall of the square groove, and then clamping and electrically connecting each caliper of the direct current copper bar assembly with a terminal of each stage of anti-interference device close to the caliper.
And finally, installing the circuit protector into a circuit protection groove of the high-integration bracket through a bolt.
So far, a motor controller is with multistage anti jamming unit assembly completion, follow-up with this multistage anti jamming unit assembly controller box inside, can realize its anticipated design performance, satisfy whole car EMC test requirement.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A multi-stage anti-interference device for a motor controller is characterized by comprising a direct current copper bar component (7), a first-stage anti-interference device (2), a second-stage anti-interference device (3), a third-stage anti-interference device (4), a fourth-stage anti-interference device (5), a fifth-stage anti-interference device (6), a first grounding copper bar (8), a second grounding copper bar (11) and a highly integrated bracket (1) for supporting the whole device,
a first through hole (113) is formed in one end, close to the electrical connection end of the direct current copper bar assembly (7), of the high integration support (1), the primary anti-interference device (2) is of an annular structure and is installed on the outer side of the first through hole (113), and the primary anti-interference device (2) is of a wound nano-crystal material thin film structure;
an electrical connection end of the direct-current copper bar assembly (7) is provided with a positive busbar (701) and a negative busbar (702), the secondary anti-jamming device (3) comprises a pair of high-frequency suppression safety-regulation capacitors which are connected in parallel and grounded, the tertiary anti-jamming device (4) comprises a pair of intermediate-frequency suppression safety-regulation capacitors which are connected in parallel and grounded, the quaternary anti-jamming device (5) comprises a pair of low-frequency suppression safety-regulation capacitors which are connected in parallel and grounded, and the secondary anti-jamming device (3), the tertiary anti-jamming device (4) and the quaternary anti-jamming device (5) are respectively connected with the positive busbar (701) and the negative busbar (702); the secondary interference suppressor (3) is also connected with the first grounding copper bar (8), and the fourth interference suppressor (5) is also connected with the second grounding copper bar (11);
the five-stage anti-interference device (6) is made of ferrite materials, a second through hole is formed in the middle of the five-stage anti-interference device (6), and the middle of the direct current copper bar assembly (7) penetrates through the second through hole.
2. The multistage interference rejection device for the motor controller according to claim 1, wherein the multistage interference rejection device (6) comprises a first magnetic block and a second magnetic block, the second magnetic block is provided with a groove, and the first magnetic block is connected with the second magnetic block to form the second through hole.
3. The multistage interference rejection device for the motor controller according to claim 2, wherein the multistage interference rejection device further comprises a clamp spring clamping piece (9), the highly integrated bracket (1) is provided with a square groove for installing the five-stage interference rejection device (6), two clamping grooves are respectively arranged on two opposite sides of the square groove, two clamping pins are respectively arranged on two sides of the clamp spring clamping piece (9), and the clamping pins of the clamp spring clamping piece (9) are connected with the five-stage interference rejection device (6) through the clamping grooves of the square groove.
4. The multistage interference rejection device for the motor controller according to claim 3, wherein said circlip clip (9) has an arch structure, and said locking leg has a V-shaped structure.
5. The multi-stage interference rejection apparatus for a motor controller according to claim 1, wherein said high frequency suppressing safety capacitor has a capacitance in the range of 8-12 nf;
the capacitance of the medium-frequency suppression safety-type capacitor is within the range of 50-300 nf;
the capacitance of the low-frequency suppression safety capacitor is within the range of 320-350 nf.
6. The multistage interference immunity device for the motor controller according to claim 1, further comprising a circuit protector (10), wherein the circuit protector (10) is connected to the dc copper bar assembly (7).
7. The multistage interference rejection device for the motor controller according to claim 1, wherein one end of the high integration bracket (1) is provided with a first potting groove (101), the first potting groove (101) is located outside the first through hole (113), the upper surface of the high integration bracket (1) is provided with a second potting groove (102) and a third potting groove (109), the lower surface of the high integration bracket (1) is provided with a fourth potting groove (110), the second potting groove (102) comprises two rectangular grooves, the two rectangular grooves are distributed on two sides of the high integration bracket (1), and the third potting groove (109) is located between the two rectangular grooves;
the first-stage anti-interference device (2) is installed in the first encapsulating groove (101), the second-stage anti-interference device (3) is installed in the second encapsulating groove (102), the third-stage anti-interference device (4) is installed in the third encapsulating groove (109), and the fourth-stage anti-interference device (5) is installed in the fourth encapsulating groove (110).
8. The multilevel interference rejection device according to claim 7, wherein the positive busbar (701) and the negative busbar (702) are respectively provided with a first caliper (703), a second caliper (704) and a third caliper (705), the first caliper (703) is electrically connected with the second-level interference rejection device (3), the second caliper (704) is electrically connected with the third-level interference rejection device (4), and the third caliper (705) is electrically connected with the fourth-level interference rejection device (5).
9. The multistage interference rejection device for the motor controller according to claim 8, wherein an elongated bus duct is disposed on a side of the third encapsulating groove (109), and two square holes are disposed on a bottom of the elongated bus duct, and the square holes are used for mounting the third caliper (705).
10. The multistage interference rejection device for the motor controller according to claim 7, wherein two fourth encapsulating grooves (110) are formed in the lower surface of the highly integrated bracket (1), a threaded hole is formed between the two fourth encapsulating grooves (110) and used for fixing the second ground copper bar (11), and a plurality of square notches are formed in the side wall of each fourth encapsulating groove (110) so that a third caliper (705) can clamp a wiring harness conveniently.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120263811.6U CN214799293U (en) | 2021-01-30 | 2021-01-30 | Multi-stage anti-interference device for motor controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120263811.6U CN214799293U (en) | 2021-01-30 | 2021-01-30 | Multi-stage anti-interference device for motor controller |
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| Publication Number | Publication Date |
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| CN214799293U true CN214799293U (en) | 2021-11-19 |
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| CN202120263811.6U Active CN214799293U (en) | 2021-01-30 | 2021-01-30 | Multi-stage anti-interference device for motor controller |
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