CN207318745U - For the foreign bodies detection coil in radio energy transmission system - Google Patents
For the foreign bodies detection coil in radio energy transmission system Download PDFInfo
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- CN207318745U CN207318745U CN201721343671.3U CN201721343671U CN207318745U CN 207318745 U CN207318745 U CN 207318745U CN 201721343671 U CN201721343671 U CN 201721343671U CN 207318745 U CN207318745 U CN 207318745U
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Abstract
The utility model provides a kind of foreign bodies detection coil being used in radio energy transmission system, it is characterised in that：Including installation base plate and 4 groups of planar coils being arranged on installation base plate, 4 groups of planar coils are arranged on the installation base plate according to the distribution form of four quadrants of planar two dimensional coordinate, each group of planar coil is formed by a conducting wire coiling, 4 groups of planar coils around to identical, positioned at the outermost conducting wire end of planar coil close to the central area of the installation base plate, the conducting wire end positioned at planar coil innermost layer passes through the installation base plate and the central area of the installation base plate is obliquely extended to from its back side.Its remarkable result is：On the premise of area coverage is ensured, the inductance value of single coil is effectively reduced, makes it easy to match the resonant network of more high detection frequency, so that the sensitivity of foreign bodies detection is lifted, and also it is simple in structure, assembling and line are convenient.
Description
Technical field
It the utility model is related to wireless power transmission technical field, and in particular to one kind is used in radio energy transmission system
Foreign bodies detection coil.
Background technology
Wireless power transmission technology (Wireless Power Transfer Technology) refers to one kind by presence
Biography energy medium in physical space, realizes electric energy being transmitted to the brand-new electric energy by electric level by source class in the form of electrical isolation
Supply model, it efficiently solves convenient, the secure accessing problem of power supply, solves tradition and directly carries out thing by electric conductor
Manage contact power supply direct contact type Transmission Mode caused by plug-in spark, carbon distribution, not easy care, be also easy to produce abrasion etc. ask
Topic, particularly security hidden trouble existing for electricity consumption in particular circumstances.Wireless power transmission technology have environment affinity it is strong,
The contact electric energy such as environmentally protective, convenient, flexible, safe transmits the advantages of institute is incomparable, has been obtained at present more wide
General application.
But some extraneous factors are usually had during wireless power transmission influences it.With electric automobile
Exemplified by wireless charging system, its energy transmitting coil is usually embedded in subsurface, when automobile stop is when on energy transmitting coil,
Probably occur foreign matter, such as metallic conductor either organism between energy transmitting mechanism and energy acceptance mechanism, these
The appearance of foreign matter not only has an impact charge efficiency, and is also possible to cause some other accidents.Particularly filling
Among the process of electricity, even a small iron nail is entered, vortex can be all produced, and then causes the rise of temperature, is finally had very much
It may cause fire.Therefore, in wireless charging system, we are necessary to enter charging environment to these by foreign bodies detection
Foreign matter is alarmed, and stops charging in time.
In the prior art, Chinese patent 201410308045.5 discloses the side that foreign bodies detection is realized in a kind of wireless charging
Method, this method are by testing the energy transfer losses during energy transmitting to determine whether there are foreign matter, as described above, energy
Foreign bodies detection is carried out in amount transmitting procedure, usually day after the fair, the particularly presence of metallic foreign body will soon be heating up,
Trigger security incident.In addition, the present inventor is also it is proposed that Chinese patent application：201610977433.1 it which disclose
A kind of foreign matter detecting method based on impedance operator, this method are laid with detection coil, the detection coil in region to be detected first
It is connected to form resonant tank with capacity cell, and high-frequency carrier signal is loaded on the resonant tank；Then the resonance is gathered
Resonance current signal on circuit；Then other inductive signals outside high-frequency carrier signal frequency range are filtered out；Finally to filtered
Resonance current signal carries out amplitude and phase analysis, judges whether region to be detected has foreign matter.Its effect is：By detecting resonance
The change of current signal phase and amplitude, correspondence obtains the impedance variations of detection coil, so that judge whether foreign matter, the party
Method cost is low, and effect is good.The change to original system is lacked at the same time, for radio energy transmission system, is not influencing
On the basis of original system efficiency, the foreign bodies detection that can be well adapted in various magnetic fields, improves radio energy transmission system
Security performance.
Research process find although the above method can be good at realizing foreign bodies detection, but for the nothing of large area
Line electric energy transmission coupling mechanism for, its foreign bodies detection coil uses solid conductor multiturn coiling mostly, due to conductor length compared with
Long, coil inductance is higher, when building LC resonance network, it is difficult to accomplishes that high-frequency detects, causes the sensitivity of foreign bodies detection
Reduce.
Utility model content
The application by provide it is a kind of be used for radio energy transmission system in foreign bodies detection coil, by existing list around
The design form of group is improved, and is covered detection zone using multigroup coil connecting method, is effectively reduced the electricity of single coil
Inductance value, the detection frequency for making it do more, lifts the sensitivity of foreign bodies detection.
In order to solve the above technical problems, the application is achieved using following technical scheme：
A kind of foreign bodies detection coil being used in radio energy transmission system, its key are：Including installation base plate and cloth
Put 4 groups of planar coils on installation base plate, 4 groups of planar coils according to four quadrants of planar two dimensional coordinate distribution form
Be arranged on the installation base plate, each group of planar coil is formed by a conducting wire coiling, 4 groups of planar coils around to identical,
Positioned at the outermost conducting wire end of planar coil close to the central area of the installation base plate, positioned at leading for planar coil innermost layer
Line end is through the installation base plate and the central area of the installation base plate is obliquely extended to from its back side.
Further, the outer contour of 4 groups of planar coils is square, and the outer contour size of 4 groups of planar coils and
Turn-to-turn is identical apart from size.
Further, the installation base plate is formed by 4 pieces of submount bonding, the size of each piece of submount with each group
The size of planar coil is adapted.
Further, the conducting wire in the planar coil is printed circuit.
Further, the conducting wire in the planar coil is formed and is pasted onto on the submount for copper wire coiling.
Further, the conducting wire coiling in the direction of the clock in 4 groups of planar coils.
Further, it is connected with each other positioned at outermost 4 conducting wire ends of planar coil as public signal input part,
Other 4 conducting wire ends that the central area of the installation base plate is obliquely extended to from the back side are used as each plane independently of each other
The signal output part of coil.
Compared with prior art, the technical solution that the application provides, the technique effect or advantage having are：
On the electromagnetic coupling mechanisms of radio energy transmission system foreign matter is carried out by the way of the splicing of multigroup planar coil
Detection, on the premise of area coverage is ensured, effectively reduces the inductance value of single coil, makes it easy to match more high detection frequency
The resonant network of rate, so that the sensitivity of foreign bodies detection is lifted, and also it is simple in structure, assembling and line are convenient.
Brief description of the drawings
Fig. 1 is the structure diagram of the single planar coil of the utility model；
Fig. 2 is the splicing effect figure of multiple planar coils of the utility model.
Embodiment
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments, it is right
Above-mentioned technical proposal is described in detail.
As Figure 1-Figure 2, it is a kind of be used for radio energy transmission system in foreign bodies detection coil, including installation base plate and
4 groups of planar coils being arranged on installation base plate, 4 groups of planar coils according to four quadrants of planar two dimensional coordinate distribution shape
Formula is arranged on the installation base plate, and each group of planar coil is formed by a conducting wire coiling, 4 groups of planar coils around to phase
Together, positioned at the outermost conducting wire end of planar coil close to the central area of the installation base plate, positioned at planar coil innermost layer
Conducting wire end be obliquely extended to through the installation base plate and from its back side the central area of the installation base plate.
With reference to attached drawing as can be seen that in the present embodiment, the outer contour of 4 groups of planar coils is square, and 4 groups of planar lines
The outer contour size of circle and turn-to-turn are identical apart from size, the coiling in the direction of the clock of the conducting wire in 4 groups of planar coils, for side
Just processing and fabricating, the installation base plate shown in Fig. 2 are formed by the submount bonding of 4 pieces of sizes as shown in Figure 1, each piece of submount
Size and the size of each group of planar coil be adapted, in specific processing, planar coil can use printed circuit technology
Printing forms, and can also use thin copper wire craft coiling and be pasted onto on submount.
In order to facilitate wiring, by Fig. 2 it can also be seen that mutually being interconnected positioned at outermost 4 conducting wire ends of planar coil
Connect other 4 conductor wire ends for the central area for being obliquely extended to the installation base plate from the back side as public signal input part
The head signal output part as each planar coil independently of each other.
The large-area planar coil of single line coiling by being improved to the facet line of multi-thread subregion coiling by the present embodiment
Circle, the ingenious topology layout based on front-back two-sided wiring, it is ensured that the signal of 4 groups of planar coils inputs and the facility of signal acquisition
Property, coil inductance is reduced by reducing single coil area coverage, is spliced by multigroup planar coil to increase signal
Area coverage, ensures that the accuracy of foreign bodies detection in radio energy transmission system, and said structure is simple, installation and control
It is convenient to, can be efficiently applied in the foreign bodies detection circuit in radio energy transmission system.
Finally it is pointed out that the above description is not intended to limit the present invention, the utility model is also and not only
It is limited to the example above, change that those skilled in the art are made in the essential scope of the utility model, change
Property, addition or replacement, should also belong to the protection scope of the utility model.
Claims (7)
- A kind of 1. foreign bodies detection coil being used in radio energy transmission system, it is characterised in that：Including installation base plate and arrangement 4 groups of planar coils on installation base plate, 4 groups of planar coils according to four quadrants of planar two dimensional coordinate distribution form cloth Put on the installation base plate, each group of planar coil is formed by a conducting wire coiling, 4 groups of planar coils around to identical, position In the outermost conducting wire end of planar coil close to the central area of the installation base plate, the conducting wire positioned at planar coil innermost layer Termination is through the installation base plate and the central area of the installation base plate is obliquely extended to from its back side.
- 2. the foreign bodies detection coil according to claim 1 being used in radio energy transmission system, it is characterised in that：It is described The outer contour of 4 groups of planar coils is square, and the outer contour size of 4 groups of planar coils and turn-to-turn are identical apart from size.
- 3. the foreign bodies detection coil according to claim 1 or 2 being used in radio energy transmission system, it is characterised in that： The installation base plate is formed by 4 pieces of submount bondings, the size of each piece of submount and the size phase of each group of planar coil Adapt to.
- 4. the foreign bodies detection coil according to claim 3 being used in radio energy transmission system, it is characterised in that：It is described Conducting wire in planar coil is printed circuit.
- 5. the foreign bodies detection coil according to claim 3 being used in radio energy transmission system, it is characterised in that：It is described Conducting wire in planar coil is formed and is pasted onto on the submount for copper wire coiling.
- 6. the foreign bodies detection coil according to claim 1 being used in radio energy transmission system, it is characterised in that：4 groups Conducting wire coiling in the direction of the clock in planar coil.
- 7. the foreign bodies detection coil according to claim 1 being used in radio energy transmission system, it is characterised in that：It is located at Outermost 4 conducting wire ends of planar coil are connected with each other as public signal input part, are obliquely extended to from the back side described Other 4 conducting wire ends of the central area of installation base plate signal output part as each planar coil independently of each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343671.3U CN207318745U (en) | 2017-10-18 | 2017-10-18 | For the foreign bodies detection coil in radio energy transmission system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721343671.3U CN207318745U (en) | 2017-10-18 | 2017-10-18 | For the foreign bodies detection coil in radio energy transmission system |
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| Publication Number | Publication Date |
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| CN207318745U true CN207318745U (en) | 2018-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721343671.3U Active CN207318745U (en) | 2017-10-18 | 2017-10-18 | For the foreign bodies detection coil in radio energy transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679327A (en) * | 2020-06-03 | 2020-09-18 | 国网黑龙江省电力有限公司电力科学研究院 | Wireless charging tray metal detection probe with magnetic structure |
-
2017
- 2017-10-18 CN CN201721343671.3U patent/CN207318745U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111679327A (en) * | 2020-06-03 | 2020-09-18 | 国网黑龙江省电力有限公司电力科学研究院 | Wireless charging tray metal detection probe with magnetic structure |
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