CN208835996U - A kind of EMI filter - Google Patents
A kind of EMI filter Download PDFInfo
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- CN208835996U CN208835996U CN201821763791.3U CN201821763791U CN208835996U CN 208835996 U CN208835996 U CN 208835996U CN 201821763791 U CN201821763791 U CN 201821763791U CN 208835996 U CN208835996 U CN 208835996U
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Abstract
A kind of EMI filter of the application has function of shielding using the partition between each chamber, can prevent the problem of crosstalk couplings are formed between interference signal；The inside of filter uses the design of multiple chambers, while being separated with metal partion (metp), can then inhibit the coupling phenomenon between unlike signal well in this way, and then solve the Electro Magnetic Compatibility between system in signals transmission；It is taken according to every kind of signal transmission and work characteristics with specific aim, effective filtering mode；There is anti-reverse functional unit, i.e., after input power reversal connection, output zero increases the safety and reliability of product on the indoor pcb board of power supply power supply filter module chamber；Power supply power supply filter module chamber individually set up and position signal filtering chamber introduce power supply, reduce the difficulty of the decentralized processing of the electromagnetic interference of separated filtering.
Description
Technical field
The utility model relates to EMI technical field of filtering, and in particular to a kind of EMI filter.
Background technique
Filter is the filter of a kind of power supply and signal one；The setting of multiple functions is in a package body
It is filtered, there are the crosstalk couplings between unlike signal；Multiple functions come extremely different system, signal between system
In transmission process there are emc issues.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides a kind of EMI filter, solves EMI
The multi-signal of filter is filtered, and there are problems that how interference and multi-signal draw in the case where interfering control
The problem of people's power supply.
To achieve the above object, the utility model uses a kind of the following technical solution: EMI filter, including envelope
It cases body, includes being separated into multiple chambers with metal partion (metp) in package body, chamber includes signal filtering chamber, mast communication filter
Wave chamber, power supply power supply filter module chamber and independent signal filter chamber, and PCB circuit board, PCB electricity are respectively arranged in chamber
It is provided with corresponding filtering unit on the plate of road, encapsulates and is provided with the output lead of quantity corresponding with chamber on the cover board of cabinet and connects
Mouthful, output lead interface passes through conducting wire respectively and is connected with corresponding filtering unit, the PCB electricity of power supply power supply filter module chamber
Reverse-connection preventing circuit component, the input terminal of the output end connection filtering unit of reverse-connection preventing circuit component, filtering are additionally provided on the plate of road
The output end of component is connected to corresponding output lead interface and is connected to signal by conducting wire by conducting wire filters chamber pair
The output lead interface answered.
It further, include leveling level meter filtering unit, playback filtering group in the signal filtering indoor PCB circuit board of chamber
Part, aobvious control filtering unit and torsion detecting device filtering unit；Independent signal filtering chamber include power supply output branch chamber,
CAN communication filters chamber, power supply lead wire chamber and motor and filters chamber.
Further, the multiple chamber is arranged to upper layer and lower layer in package body, and the bottom of lower layer connects the lid
Plate is connected with top plate at the top of upper layer；
Chamber in upper layer includes power supply power supply filter module chamber, power supply output branch chamber, mast communication filtering chamber
Room and torsion detection filter chamber, power supply power supply filter module chamber and aobvious control filtering chamber and torsion detection filter chamber all phases
Neighbour, mast filters chamber and aobvious control filtering chamber and torsion detection filter chamber is all adjacent；
Chamber in lower layer includes signal filtering chamber, and signal filters chamber and filters chamber and power supply lead wire with motor respectively
Chamber is adjacent；Power supply lead wire chamber is connected with the power supply power supply filter module chamber.
Further, mutually independent X-motor filtering unit is provided in the motor filtering indoor PCB circuit board of chamber
With Y-motor filtering unit.
Further, the output lead interface being arranged on cover board includes that CAN draws line interface, X-motor draws line interface, Y
Motor lead-out wire interface, mast essence electricity extraction line interface, power outlet interface, line interface is drawn in mast communication, leveling is drawn
Line interface, playback draw line interface, line interface is drawn in torsion detection and line interface is drawn in aobvious control.
Compared with the prior art, the utility model has the following beneficial effects:
1, the partition between each chamber of filter has function of shielding, can prevent from forming crosstalk coupling between interference signal
The problem of conjunction；The inside of filter uses the design of multiple chambers, while being separated with metal partion (metp), can then press down well in this way
Coupling phenomenon between unlike signal processed, and then solve the Electro Magnetic Compatibility between system in signals transmission；According to every
The transmission of kind signal and work characteristics are taken with specific aim, effective filtering mode；In power supply power supply filter module chamber
Pcb board on have anti-reverse functional unit, i.e., input power reversal connection after, output zero, increase product safety and can
By property；Power supply power supply filter module chamber individually set up and position signal filtering chamber introduce power supply, reduce separated filtering
Electromagnetic interference decentralized processing difficulty.
2 and this type filter, be according to internal system CAN draw line interface, X-motor draw line interface, Y-motor
Draw line interface, mast essence electricity draws line interface, power outlet interface, line interface is drawn in mast communication, leveling lead-out wire connects
Mouth, playback draw the transmission corresponding with aobvious control lead-out wire interface signal of line interface, torsion detection extraction line interface and work functions
Feature, takes corresponding filtering mode respectively, and in whole device inner utilization distributed (independent signal filtering chamber) and
The electromagnetic interference solution that centralized (signal filtering chamber) combines finally solves multichannel unlike signal and between each other
Emc issue.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the application；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the circuit diagram of the application.
Specific embodiment
Scheme is described further now in conjunction with attached drawing.
Implementation column 1
As depicted in figs. 1 and 2, a kind of EMI filter, including encapsulation cabinet, interior package body includes using metal partion (metp)
Be separated into multiple chambers, chamber include signal filtering chamber 8, mast communication filtering chamber 7, power supply power supply filter module chamber and
Independent signal filters chamber, is respectively arranged with PCB circuit board in chamber, corresponding filtering unit is provided in PCB circuit board, seals
The output lead interface of quantity corresponding with chamber is provided on the cover board 4 of vanning body, output lead interface passes through conducting wire respectively
It is connected with corresponding filtering unit, is additionally provided with reverse-connection preventing circuit group in the PCB circuit board of power supply power supply filter module chamber
Part, the input terminal of the output end connection filtering unit of reverse-connection preventing circuit component, the output end of filtering unit are connected to by conducting wire
Corresponding output lead interface and by conducting wire be connected to signal filter the corresponding output lead interface of chamber 8, it is such to set
It counts power supply and concentrates filtering, dispersion leads to output lead interface, convenient electromagnetic isolation processing.
It includes leveling level meter filtering unit, playback filtering unit, aobvious control in the PCB circuit board in chamber 8 that signal, which filters,
Filtering unit and torsion detecting device filtering unit；It includes power supply output branch chamber 5, CAN communication that independent signal, which filters chamber,
It filters chamber, power supply lead wire chamber 10 and motor and filters chamber 9.Generally also shielding is not taken to arrange between cavity in the prior art
It applies, so that must have cross-interference issue between multiple signals, while according to the antenna effect of electromagnetic interference, internal connection line
Cable filtering rear end will carry a large amount of electromagnetic interference noise surely；And the multiple signals inside the filter of the application, then it takes
Unlike signal filtering processing and metal partion (metp) divide on the basis of cavity, and input, output signal utilize PCB circuit board cabling and circuit
The problem of plate large area applies the mode that copper ground connection improves shield effectiveness, greatly inhibits filtering rear class electromagnetic interference signal.Letter
Include in PCB circuit board in number filtering chamber 8 leveling level meter filtering unit, playback filtering unit, aobvious control filtering unit and
Torsion detecting device filtering unit, such design have saved the separation difficulty of chamber under the lesser design of electromagnetic interference.
The multiple chamber is arranged to upper layer and lower layer in package body, and the bottom of lower layer 3 connects the cover board 4, upper layer 2
Top be connected with top plate 1；
Chamber in upper layer 2 includes power supply power supply filter module chamber, power supply output branch chamber 5, mast communication filtering
Chamber 7 and torsion detection filter chamber 6, power supply power supply filter module chamber and aobvious control filtering chamber and torsion detection filter chamber
6 is all adjacent, and mast filters chamber and aobvious control filtering chamber and torsion detection filter chamber 6 is all adjacent；Power supply output branch chamber 5
It is convenient that the carry out branch lead for needing to introduce power supply in chamber 8 is filtered to signal.
Chamber in lower layer 3 includes signal filtering chamber 8, and signal filters chamber 8 and filters chamber 9 and power supply with motor respectively
Lead chamber 10 is adjacent；Power supply lead wire chamber 10 is connected with the power supply power supply filter module chamber, power supply lead wire chamber 10
It is individually designed, facilitate extraction and the cabling of power supply line.Phase is provided in PCB circuit board in the motor filtering chamber 9
Mutual independent X-motor filtering unit and Y-motor filtering unit.By X-motor filtering unit and the design of Y-motor filtering unit one
It rises, has saved the space separated.
The output lead interface being arranged on cover board 4 includes that CAN draws line interface, X-motor draws line interface, Y-motor is drawn
Line interface, mast essence electricity extraction line interface, power outlet interface, line interface is drawn in mast communication, line interface is drawn in leveling, is returned
Line interface is drawn in position, line interface is drawn in torsion detection and line interface is drawn in aobvious control.
Embodiment 2
On the basis of embodiment 1, the filtering unit in the PCB circuit board of source power supply filter module chamber include from
Common mode inductance L1, the common mode inductance L2 and ground connection punching filter group that input terminal is sequentially connected in series to output end, common mode inductance L1's
Input terminal is parallel with capacitor C1 and capacitor C46, and the output end of mould inductance L1 is parallel with capacitor C2 and capacitor C3, common mode inductance L2's
Be sequentially connected in series capacitor C4 and capacitor C5 between input terminal, the tie point of capacitor C4 and capacitor C5 indirectly；Common mode inductance L2
Output end be parallel with capacitor C6；Be grounded punching filter group includes two ground connection punching filters, is grounded punching filter
It is connected on every route；It is grounded output end of the output end of punching filter as filtering unit.One of ground connection punching filter
Wave device includes feedthrough capacitor C10；Another ground connection punching filter includes feedthrough capacitor C10, feedthrough capacitor C10 and feedthrough capacitor
Ground connection is connected between C9；
Common mode inductance L1, common mode inductance L2 and ground connection punching filter group and capacitor C3, capacitor C4, capacitor C6, capacitor
C46, capacitor C1 and capacitor C2 form three-level filtering circuit, inhibit to common mode interference；Line capacitance (C1, C2, C3, C6
And C46) DM EMI is inhibited, 2 ground connection punching filtering are increased in order to improve the High frequency filter effect of power unit
Device, signal filtering are filtered by the way of high frequency common mode filter and ground capacity, common-mode filter height with higher
Frequency impedance can have good filter effect to High-frequency Interference.
Reverse-connection preventing circuit component includes multiple groups parallel connection reverse-connection preventing circuit, wherein one group of reverse-connection preventing circuit include metal-oxide-semiconductor Q3 and
Input terminal of the pole D of voltage-stabiliser tube D3, metal-oxide-semiconductor Q3 as reverse-connection preventing circuit, the pole S of metal-oxide-semiconductor Q3 are connected with resistance R5 resistance R5's
The other end is connected with resistance R6, the output end of the other end of resistance R6 and the pole S of metal-oxide-semiconductor Q3 as reverse-connection preventing circuit, metal-oxide-semiconductor Q3
The pole D and the pole S between be parallel with capacitor C43, the anode of the pole the S connection voltage-stabiliser tube D3 of metal-oxide-semiconductor Q3, between resistance R5 and resistance R6
There are the pole G of leading point connection metal-oxide-semiconductor Q3 and the cathode of voltage-stabiliser tube D3, is parallel with capacitor C44 between the positive and negative anodes of voltage-stabiliser tube D3.When
When reverse power connection, power supply will be unable to power by metal-oxide-semiconductor Q3 cut-off.
CAN draws line interface, mast essence electricity extraction line interface, power outlet interface, mast and communicates and draw line interface, adjust
Flat extraction line interface, playback draw line interface, reverse detection extraction line interface filtering unit corresponding with aobvious control extraction line interface
To be grounded punching filter；Ground connection punching filter is in series on the corresponding signal wire of the signal of 8 kinds of interfaces respectively above to carry out
Filtering；
It all includes common mode inductance that X-motor, which draws line interface and Y-motor and draws the filtering unit of line interface, common mode inductance it is defeated
Outlet is parallel with line capacitance, is filtered in this way.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (5)
1. a kind of EMI filter, which is characterized in that include being separated into metal partion (metp) in package body including encapsulating cabinet
Multiple chambers, chamber include signal filtering chamber (8), mast communication filtering chamber (7), power supply power supply filter module chamber and solely
Vertical signal filters chamber, is respectively arranged with PCB circuit board in chamber, corresponding filtering unit is provided in PCB circuit board, encapsulates
The output lead interface of quantity corresponding with chamber is provided on the cover board (4) of cabinet, output lead interface passes through conducting wire respectively
It is connected with corresponding filtering unit, is additionally provided with reverse-connection preventing circuit group in the PCB circuit board of power supply power supply filter module chamber
Part, the input terminal of the output end connection filtering unit of reverse-connection preventing circuit component, the output end of filtering unit are connected to by conducting wire
Corresponding output lead interface and signal filtering chamber (8) corresponding output lead interface is connected to by conducting wire.
2. a kind of EMI filter as described in claim 1, which is characterized in that signal filters the PCB circuit in chamber (8)
It include leveling level meter filtering unit, playback filtering unit, aobvious control filtering unit and torsion detecting device filtering unit on plate；Solely
Vertical signal filtering chamber includes power supply output branch chamber (5), CAN communication filtering chamber, power supply lead wire chamber (10) and motor
It filters chamber (9).
3. a kind of EMI filter as claimed in claim 2, which is characterized in that the multiple chamber is set in package body
Upper layer and lower layer are set to, the bottom of lower layer (3) connects the cover board (4), is connected with top plate (1) at the top of upper layer (2)；
Chamber in upper layer (2) includes power supply power supply filter module chamber, power supply output branch chamber (5), mast communication filtering
Chamber (7) and torsion detection filter chamber (6), power supply power supply filter module chamber and aobvious control filtering chamber and torsion detection filter
Chamber (6) is all adjacent, and mast filters chamber and aobvious control filtering chamber and torsion detection filter chamber (6) are all adjacent；
Chamber in lower layer (3) include signal filtering chamber (8), signal filter chamber (8) respectively with motor filtering chamber (9) and
Power supply lead wire chamber (10) is adjacent；Power supply lead wire chamber (10) is connected with the power supply power supply filter module chamber.
4. a kind of EMI filter as claimed in claim 3, which is characterized in that the PCB in motor filtering chamber (9)
Mutually independent X-motor filtering unit and Y-motor filtering unit are provided on circuit board.
5. a kind of EMI filter as described in claim 1, which is characterized in that the output lead interface being arranged on cover board (4)
Line interface is drawn including CAN, X-motor draws line interface, Y-motor draws line interface, mast essence electricity draws line interface, power supply is drawn
Line interface, mast communication draw line interface, leveling draw line interface, playback draw line interface, torsion detection draw line interface and
Line interface is drawn in aobvious control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763791.3U CN208835996U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821763791.3U CN208835996U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208835996U true CN208835996U (en) | 2019-05-07 |
Family
ID=66319695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821763791.3U Active CN208835996U (en) | 2018-10-30 | 2018-10-30 | A kind of EMI filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208835996U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110417252A (en) * | 2019-07-17 | 2019-11-05 | 陕西千山航空电子有限责任公司 | A kind of power filter box |
| CN110880865A (en) * | 2019-11-29 | 2020-03-13 | 重庆大及电子科技有限公司 | EMI filtering device |
| CN111900872A (en) * | 2020-07-23 | 2020-11-06 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
| EP3745591A1 (en) * | 2019-05-30 | 2020-12-02 | The Thinking Pod Innovations Ltd | Broadband filter |
-
2018
- 2018-10-30 CN CN201821763791.3U patent/CN208835996U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3745591A1 (en) * | 2019-05-30 | 2020-12-02 | The Thinking Pod Innovations Ltd | Broadband filter |
| CN110417252A (en) * | 2019-07-17 | 2019-11-05 | 陕西千山航空电子有限责任公司 | A kind of power filter box |
| CN110880865A (en) * | 2019-11-29 | 2020-03-13 | 重庆大及电子科技有限公司 | EMI filtering device |
| CN111900872A (en) * | 2020-07-23 | 2020-11-06 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
| CN111900872B (en) * | 2020-07-23 | 2022-01-04 | 重庆大及电子科技有限公司 | Electromagnetic protection filter device |
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