CN203276999U - Protection device of wireless electric control well lid wireless charging receiving coil - Google Patents
Protection device of wireless electric control well lid wireless charging receiving coil Download PDFInfo
- Publication number
- CN203276999U CN203276999U CN201320255069XU CN201320255069U CN203276999U CN 203276999 U CN203276999 U CN 203276999U CN 201320255069X U CN201320255069X U CN 201320255069XU CN 201320255069 U CN201320255069 U CN 201320255069U CN 203276999 U CN203276999 U CN 203276999U
- Authority
- CN
- China
- Prior art keywords
- metal
- wireless charging
- receiving coil
- charging receiving
- coating sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Provided is a protection device of a wireless electric control well lid wireless charging receiving coil. The protection device comprises insulation bushings, wireless charging receiving coils, outer metal sleeves, metal protection sheets and high-density filling and sealing resin, and is characterized in that the wireless charging receiving coils are arranged in the insulation bushings in an embedded mode, the insulation bushings are arranged in the outer metal sleeves in an embedded mode, the metal protection sheets are closely connected to the wireless charging receiving coils in a pressing mode, the high-density filling and sealing resin is filled in the outer metal sleeves, the insulation bushings and the metal protection sheets, each metal protection sheet is made of metal or printed-circuit boards including at least more than one metal layer and is coated with insulation paint, and the metal protection sheets are provided with annular open circuit structures or annular closed circuit structures with the number of clockwise loop circuits equal to that of anticlockwise loop circuits. The metal protection sheets with the structural features can avoid eddy currents, and the wireless electric control well lid wireless charging receiving coil is made to be effectively protected.
Description
Technical field
The utility model relates to wireless charging, is specifically related to the protective device of wireless electric-controlled well lid wireless charging receiving coil.
Background technology
The electric power well lid is the Vomitory of power cable tunnel.Along with the acceleration of city process, the power main of former built on stilts layout all inevitably goes underground after entering the city.Electric power tunnel becomes the critical passage of power supply system.
The on line real-time monitoring of electric power tunnel gateway state is most important for the life security that ensures supply of electric power and the city people.
For a long time, the condition monitoring of electric power tunnel entrance never is improved, one of crucial factor is that the environment for use of well lid is extremely abominable, and natural cause, human factor all cause the state monitoring apparatus of well lid must have the functions such as tamper-proof, waterproof, contactlessly powered and Wireless Data Transmission.
In having the wireless electric-controlled manhole cover system of blocking mechanism, the supply of electric power that is placed in control under well lid and unlocking apparatus can not perennity, and therefore, wireless charging has become the prerequisite function of wireless electric-controlled well lid.
In the wireless charging mode based on induction charging, electric power receiving coil and electric power send can not have metal object to exist between coil, otherwise, the existence of metal object will cause the generation of current vortex, and change thus the inductance parameters of transmitting coil and receiving coil, and then the electromagnetic induction resonance frequency between upset transmitting coil and receiving coil, causing charge efficiency sharply to reduce even can't charge.
In order to satisfy the requirement of above wireless charging, receiving coil all is installed among nonmetallic insulating material usually, and the distance of receiving coil range transmission coil is not too much, and according to the requirement of Qi standard, this distance must not be greater than 5 millimeters.This just forces when the structural design of receiving coil can only install on the top of receiving coil the nonmetal protective cover of a shell.Under the condition of practical service environment, after being placed in the electric power tunnel well lid installation of road, all to carry out smooth rolling through road roller, in a lot of situations, handstone or foreign matter can be in the situation that roll and are embedded into shell, and then damage receiving coil.For this reason, increase the protective cover of setting up, the way of just opening when charging; Adding the way of filling with resin on receiving coil all occurs.
Regrettably; increase a protective cover of setting up; although just open and can guarantee that in work progress receiving coil is not damaged adding the way of filling with resin on receiving coil in when charging, taking down protective cover and cut a hole the situation of wearing insulating material and then making the receiving coil damage with sharp object but attracted by the people.
How to receiving coil carry out effective protection become wireless electric-controlled well lid realize wireless charging the subject matter that must solve.
Summary of the invention
For above problem, the utility model provides a kind of protective device of wireless electric-controlled well lid wireless charging receiving coil.
According to electromagnetic induction principle, at the two ends of coil incoming transport voltage, just produce magnetic flux in coil, along with alternately changing of alternating current, flow direction also alternately changes.At this moment, if the front end at coil is placed a metal object, the magnetic flux that coil produces will pass metal object, metal object can be considered as many concentric annular wires and form, on these ring-type wires, because induction will produce current vortex, when producing current vortex, also will produce one with one of coil flux opposite direction induction magnetic flux, the effect due to the induction magnetic flux will cause the magnetic flux in coil to reduce.
The number of turn N that equals coil due to the electromotive force at coil two ends multiply by the rate of change d Φ/dt of magnetic flux:
e?=?N*（dΦ/dt)
When turn number N and the electromotive force e that puts on coil two ends are changeless value, equation is set up, only have the rate of change that increases magnetic flux that equation is set up.
Frequency one timing of alternating current in coil, the rate of change of magnetic flux just can be weighed with the size of magnetic flux.
Be N at coil turn, coil section is long-pending is S, and the length of magnetic path perpendicular with coil section is l, and passing into coil current is I, and in coil, the relative permeability of magnetic material is in the magnetic circuit of u, and the size of the magnetic flux that coil produces is:
φ?=?I*N*u*S?/?l
As can be seen from the above equation, be that N, relative permeability are the 1(air core coil in the number of turn), coil section is long-pending is S, the length of magnetic path is in the air core coil of l, increase magnetic flux, only having increases the electric current I that passes into coil.The current vortex that produces in the metal object of coil front end is stronger, and the electric current that coil midstream enters is just more.
Electromagnetic oven, dielectric heating oven are according to this principle work.
By the analysis of above principle, we also can recognize, the essential condition that produces current vortex is to form the concentric annular loop in the metal object on coil top.
Make concentric open circuit shape if will be placed in the metal object on coil top, make it can't produce the current vortex loop, the metal object that perhaps will be placed in coil top is made the closed-loop path structure that the clockwise direction feeder number equates with the counter-clockwise direction feeder number, form equal and opposite in direction in metallic(return) circuit, the electric current of opposite direction will stop the generation of current vortex.
Occupy above analysis, carried out respectively with the ring-type open-circuit structure and clockwise the sheet metal of the closed circuit structure that equates with counterclockwise number of loop turns of number of loop turns be placed in separately respectively the testing experiment that passes into alternating current coil top, test shows: when the sheet metal with above architectural feature is in coil top, can't produce current vortex in sheet metal, simultaneously, the magnetic flux of coil generation can pass insusceptibly sheet metal and arrive receiving coil.
Occupy above testing experiment, the utility model provides a kind of protective device of wireless electric-controlled well lid wireless charging receiving coil.
Utilize this device; can place the metal coating sheet of protection receiving coil between the transmitting coil that charges based on induction wireless and receiving coil; after increasing the metal coating sheet; receiving coil is positioned under the protection of metal coating sheet and high density epoxy resin; improved the protective capability to receiving coil, the induction wireless charging technique can be applied in the adverse circumstances of wireless electric-controlled well lid.
The technical scheme that the utility model adopts is:
The protective device of wireless electric-controlled well lid wireless charging receiving coil comprises insulating bushing, wireless charging receiving coil, metal-coating, metal coating sheet, high density envelope filling resin; Be characterised in that the wireless charging receiving coil is flush-mounted among insulating bushing; insulating bushing is flush-mounted among metal-coating; the metal coating sheet closely is crimped on the wireless charging receiving coil; high density envelope fill with resin filling in metal-coating, insulating bushing, between and on the metal coating sheet; insulating varnish is made and be coated with to the metal coating sheet by metal or by containing at least the printed circuit board of the above metal of one deck; the metal coating sheet has the ring-type open-circuit structure, perhaps has the closed circuit structure of ring-type that clockwise number of loop turns equates with counterclockwise number of loop turns.
Compared with prior art, the utility model is with having the ring-type open-circuit structure, perhaps with the metal coating sheet of the metal coating sheet with closed circuit structure that clockwise number of loop turns equates with counterclockwise number of loop turns as receiving coil.Fill with under the protection of resin and metal coating sheet in the high density envelope, induction wireless charging receiving coil obtains protection effectively reliably, and the induction wireless charging technique can be applied in the adverse circumstances of wireless electric-controlled well lid.
Description of drawings
Fig. 1 is the induction wireless charging receiving coil protective device section of structure of prior art.
Fig. 2 is induction wireless charging receiving coil protective device section of structure of the present utility model.
The plane graph of the metal coating sheet of Fig. 3 closed circuit structure formation of ring-type that to be clockwise number of loop turns of the present utility model equate with number of loop turns counterclockwise.
The axonometric drawing of the metal coating sheet of Fig. 4 closed circuit structure formation of ring-type that to be clockwise number of loop turns of the present utility model equate with number of loop turns counterclockwise.
Fig. 5 is the plane graph of the metal coating sheet that is made of the ring-type open-circuit structure of the present utility model.
Fig. 6 is the axonometric drawing of the metal coating sheet that is made of the ring-type open-circuit structure of the present utility model.
Fig. 7 is the plane graph of the metal coating sheet that is made of another kind of ring-type open-circuit structure of the present utility model.
Fig. 8 is the axonometric drawing of the metal coating sheet that is made of another kind of ring-type open-circuit structure of the present utility model.
The top floor plan view of the metal coating sheet that Fig. 9 closed circuit structure that to be the clockwise number of loop turns of being made by printed circuit board of the present utility model equate with number of loop turns counterclockwise consists of.
The ground floor plan of the metal coating sheet that Figure 10 closed circuit structure that to be the clockwise number of loop turns of being made by two sided pcb of the present utility model equate with number of loop turns counterclockwise consists of.
Embodiment
As shown in Fig. 1, the induction wireless of prior art charging receiving coil protective device comprises insulating bushing 1, wireless charging receiving coil 2, metal-coating 3, envelope filling resin 4.Wireless receiving coil 2 only is in envelope fills with under the protection of resin 4, when heavy vehicle rolls handstone or sticker when embedding envelope and filling with in resin, is easy to coil is broken.Also be easy to cut a hole Chuanfeng with sharp metal object and fill with resin, coil is destroyed.
Shown in Figure 2 is the wireless electric-controlled well lid wireless charging receiving coil protective device section of structure of the utility model embodiment.As shown in the figure, wireless electric-controlled well lid wireless charging receiving coil protective device of the present utility model comprises insulating bushing 1, wireless charging receiving coil 2, metal-coating 3, high density envelope filling resin 4, metal coating sheet 5.
Insulating material such as nylon, plastics, PVC of insulating bushing 1 use is made, and has center drilling, and has the circular ring structure of endless groove and cable-through hole in the middle part of diameter.
Wireless charging receiving coil 2 is the flatwise coils with circular flat structure.
Metal-coating 3 use metal materials are made, the drag cup shape of center drilling and cable-through hole at the bottom of having glass.
Insulating varnish is made and be coated with to metal coating sheet 5 use metal materials or the printed circuit board that contains the multiple layer metal material, and metal coating sheet 5 has the ring-type open-circuit structure, perhaps has the closed circuit structure of ring-type that clockwise number of loop turns equates with number of loop turns counterclockwise.
Wireless charging receiving coil 2 is flush-mounted among insulating bushing 1; insulating bushing 1 is flush-mounted among metal-coating 3; metal coating sheet 5 closely is crimped on wireless charging receiving coil 2, high density envelope fill with that resin 4 is filled between metal-coating 3, insulating bushing 1, metal coating sheet 5 gaps and metal coating sheet 5 on.
Fig. 3, metal coating sheet shown in Figure 4 are made of with the closed circuit structure of ring-type that counterclockwise number of loop turns equates clockwise number of loop turns.when the metal coating sheet with this structure is placed in coil top, when the magnetic flux that is produced by transmitting coil passes the metal coating sheet, the feeder number that moves towards clockwise due to the metal coating sheet equates with the feeder number that moves towards counterclockwise, form equal and opposite in direction in metal coating sheet loop, the electric current of opposite direction, thereby stoped current vortex to produce in the metal coating sheet, the magnetic flux that transmitting coil produces can pass insusceptibly the metal coating sheet and arrive receiving coil, make receiving coil can not be subjected to the impact of metal coating sheet to produce induced current when obtaining metal coating sheet strength protection, and then realize wireless charging.
Fig. 5, metal coating sheet shown in Figure 6 are made of the ring-type open-circuit structure.When the metal coating sheet with this structure is placed in coil top; when the magnetic flux that is produced by transmitting coil passes the metal coating sheet; because the metal coating sheet is open loop structure; can't form current circuit; thereby stoped current vortex to produce in the metal coating sheet; the magnetic flux that transmitting coil produces can pass insusceptibly the metal coating sheet and arrive receiving coil; make receiving coil can not be subjected to the impact of metal coating sheet to produce induced current when obtaining metal coating sheet strength protection, and then realize wireless charging.
Fig. 7, metal coating sheet shown in Figure 8 are made of another kind of ring-type open-circuit structure.When the metal coating sheet with this structure is placed in receiving coil top; when the magnetic flux that is produced by transmitting coil passes the metal coating sheet; because the metal coating sheet is open loop structure; can't form current circuit; thereby stoped current vortex to produce in the metal coating sheet; the magnetic flux that transmitting coil produces can pass insusceptibly the metal coating sheet and arrive receiving coil; make receiving coil can not be subjected to the impact of metal coating sheet to produce induced current when obtaining metal coating sheet strength protection, and then realize wireless charging.
Fig. 9 and Figure 10 shows that the circuit board top layer of the metal coating sheet made from two sided pcb and the plane graph of bottom.The metal level of circuit board top layer has the helix structure of clockwise trend, and the metal level of circuit board bottom has the helix structure of counterclockwise trend, and the metal two ends of circuit board top layer and bottom are connected by via hole and form the closed-loop path structure.When the metal coating sheet press-fits on receiving coil; when the magnetic flux that is produced by transmitting coil passes sheet metal; the size of current that produces in the electric current that produces in the annular metal sheet loop of clockwise trend and the annular metal sheet loop of moving towards counterclockwise equates; opposite direction; and then having stoped the generation of current vortex, the magnetic flux that transmitting coil produces can pass insusceptibly the metal coating sheet and arrive receiving coil.Make receiving coil can not be subjected to the impact of metal coating sheet to produce induced current when obtaining metal coating sheet strength protection, and then realize wireless charging.
Claims (3)
1. the protective device of wireless electric-controlled well lid wireless charging receiving coil; comprise insulating bushing, wireless charging receiving coil, metal-coating, metal coating sheet, high density envelope filling resin; it is characterized in that: the wireless charging receiving coil is flush-mounted among insulating bushing; insulating bushing is flush-mounted among metal-coating; the metal coating sheet closely is crimped on the wireless charging receiving coil, high density envelope fill with resin filling in metal-coating, insulating bushing, between and on the metal coating sheet.
2. the protective device of wireless electric-controlled well lid wireless charging receiving coil as claimed in claim 1 is characterized in that: insulating varnish is made and be coated with to described metal coating sheet by metal or by containing at least the printed circuit board of the above metal of one deck.
3. the protective device of wireless electric-controlled well lid wireless charging receiving coil as claimed in claim 1, it is characterized in that: described metal coating sheet has the ring-type open-circuit structure, perhaps has the closed circuit structure of ring-type that clockwise number of loop turns equates with number of loop turns counterclockwise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320255069XU CN203276999U (en) | 2013-05-13 | 2013-05-13 | Protection device of wireless electric control well lid wireless charging receiving coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320255069XU CN203276999U (en) | 2013-05-13 | 2013-05-13 | Protection device of wireless electric control well lid wireless charging receiving coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203276999U true CN203276999U (en) | 2013-11-06 |
Family
ID=49507359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320255069XU Expired - Lifetime CN203276999U (en) | 2013-05-13 | 2013-05-13 | Protection device of wireless electric control well lid wireless charging receiving coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203276999U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236333A (en) * | 2013-05-13 | 2013-08-07 | 昆明迪森电气有限公司 | Wireless charging receiving coil protection device of wireless electronic control manhole cover |
| CN105389995A (en) * | 2015-12-09 | 2016-03-09 | 赵树龙 | Buried vehicle detector with wireless charging function |
| CN109995148A (en) * | 2017-11-16 | 2019-07-09 | 矢崎总业株式会社 | Power transmission communication unit |
-
2013
- 2013-05-13 CN CN201320255069XU patent/CN203276999U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236333A (en) * | 2013-05-13 | 2013-08-07 | 昆明迪森电气有限公司 | Wireless charging receiving coil protection device of wireless electronic control manhole cover |
| CN105389995A (en) * | 2015-12-09 | 2016-03-09 | 赵树龙 | Buried vehicle detector with wireless charging function |
| CN109995148A (en) * | 2017-11-16 | 2019-07-09 | 矢崎总业株式会社 | Power transmission communication unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203747517U (en) | Building material block and building structure | |
| EP2576274B1 (en) | A wireless power receiving unit, a wireless power transferring unit, a wireless power transferring device and use of a wireless power transferring device | |
| CN203276999U (en) | Protection device of wireless electric control well lid wireless charging receiving coil | |
| WO2011141173A2 (en) | Transmission system for communication between downhole elements | |
| CN102360781B (en) | Separable transformer with magnetic core in nested structure | |
| CN105405622A (en) | Loosely coupled transformer device for wirelessly charging electric vehicle | |
| CN105403744B (en) | One kind can fast load and unload anti-tampering electromagnetic current transducer intelligent electric meter | |
| CN106257975A (en) | For shielding sheet and the wireless charging device of electromagnetic wave | |
| CN103904785A (en) | Multi-combination sensing power taking and transformation device for high-voltage power transmission line | |
| CN110326067A (en) | Coil device | |
| CN103236333A (en) | Wireless charging receiving coil protection device of wireless electronic control manhole cover | |
| CN104901398B (en) | Contactless charging equipment and contactless battery equipment | |
| CN105449874B (en) | High voltage occasion application remote-wireless electric energy transmission coil configuration method | |
| CN105896682A (en) | Flat coil, fabrication method thereof and flat coil wireless charger | |
| CN208874364U (en) | Wireless charging attachment device, wireless charging transmitting terminal, receiving end and system | |
| SU452526A1 (en) | Device for transmitting electrical energy to a contactless locomotive | |
| EP3862334A1 (en) | Cement-based substrate for induction energy transfer systems | |
| Moriki et al. | Technological feasibility of coaxial contactless power transmission for traction power supply | |
| CN109849698B (en) | Five-phase wireless charging magnetic coupling mechanism applied to rail transit | |
| JP7022979B2 (en) | Transmission coil for non-contact power supply, its manufacturing method, and non-contact power supply device | |
| CN110311364A (en) | A kind of direct fault current limiter and DC transmission system | |
| CN106712011B (en) | A kind of calculation method considering the modified aerial condutor layering electric current of toroidal current | |
| CN205751835U (en) | Wireless charging loosely coupled transformer and automobile wireless charging device | |
| CN109398117B (en) | Magnetic conduction plate of positioning separable transformer | |
| Chen et al. | Design of Wireless Power Supply System for Trackless Trolley Car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |