CN208767126U - A kind of core structure of wireless charging system - Google Patents
A kind of core structure of wireless charging system Download PDFInfo
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- CN208767126U CN208767126U CN201821442373.4U CN201821442373U CN208767126U CN 208767126 U CN208767126 U CN 208767126U CN 201821442373 U CN201821442373 U CN 201821442373U CN 208767126 U CN208767126 U CN 208767126U
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Abstract
The utility model discloses a kind of core structures of wireless charging system, comprising: core body, including the first magnetic core, the second magnetic core, third magnetic core, second magnetic core and third magnetic core are connected to the both ends of first magnetic core；Second magnetic core and third magnetic core are equipped with charging face；Coil is wound on first magnetic core, and the electromagnetic field that the coil generates can reach second magnetic core and third magnetic core along first magnetic core；Shielded layer, is covered in the core body and coil, and the position in the charging face is not provided with the shielded layer；Second magnetic core, third magnetic core area be at least three times of area of first magnetic core；The thickness of first magnetic core is second magnetic core, at least three times of thickness of third magnetic core.The core structure of the utility model can reduce electromagnetic field intensity of the transmitting coil between receiving coil, improve charging security, while structure flexible design, be installed on to the property of can adapt to the corresponding position of different application scene.
Description
Technical field
The utility model relates to wireless charging technical fields, particularly relate to a kind of core structure of wireless charging system.
Background technique
Electric car has been subjected to generally approving and having obtained relatively broad popularize as a kind of new-energy automobile.Mesh
Before, the charging modes of electric car are broadly divided into wired charging and two kinds of wireless charging, wherein wireless charging mode, which has, to be not necessarily to
Bulky plug and cable are configured, manual operation is not necessarily to, without danger of hazardous electrical discharges, the advantages such as easy to use, thus by wireless charging
Technology is as main R&D direction.
According to the technical principle of wireless charging, between the transmitting coil of wireless transmitter and the receiving coil of wireless receiver
And surrounding can generate electromagnetic field, electromagnetic field crosses conference and generates harm to human body, moreover, metallics can be in excessive electromagnetic field
In seriously generate heat, it is possible to bring fire hazard.
The core structure of existing wireless charging system, usually in the coil that coiling is arranged in core body, Ci Zhongjie
The core structure of structure, the electromagnetic field generated between transmitting coil and receiving coil is larger, moreover, structure type is more single,
The installation site that can not be adaptively installed under plurality of application scenes.
Utility model content
In view of this, can reduce the purpose of this utility model is that propose a kind of core structure of wireless charging system
Electromagnetic field intensity between transmitting coil and receiving coil, and structure flexible design, are installed on different application to the property of can adapt to
The corresponding position of scene.
Based on above-mentioned purpose, the utility model provides a kind of core structure of wireless charging system, comprising:
Core body, including the first magnetic core, the second magnetic core, third magnetic core, second magnetic core connect respectively with third magnetic core
It is connected to the both ends of first magnetic core；Second magnetic core and third magnetic core are equipped with charging face；
Coil is wound on first magnetic core, and the electromagnetic field that the coil generates can reach institute along first magnetic core
State the second magnetic core and third magnetic core；
Shielded layer, is covered in the core body and coil, and the position in the charging face is not provided with the shielded layer.
Optionally, second magnetic core is connected to one end of first magnetic core, and the third magnetic core is connected by magnetic conductor
It is connected to the other end of first magnetic core.
Optionally, second magnetic core is connected to one end of first magnetic core, the third magnetic by the first magnetic conductor
Core is connected to the other end of first magnetic core by the second magnetic conductor.
Optionally, second magnetic core, third magnetic core area be at least three times of area of first magnetic core.
Optionally, the thickness of first magnetic core is second magnetic core, at least three times of thickness of third magnetic core.
Optionally, the shielded layer is covered on the magnetic conductor.
Optionally, first magnetic conductor, cover the shielded layer on the second magnetic conductor.
Optionally, the shielded layer is non-close shielded layer, and there is no around the core body on the shielded layer
The loop of middle main flux.
Optionally, the core structure is correspondingly arranged in transmitting coil and receiving coil, the magnetic core of the transmitting coil
The charging face position of second magnetic core of the core structure in the charging face and receiving coil of second magnetic core of structure
Face, the institute of the core structure in the charging face and receiving coil of the third magnetic core of the core structure of the transmitting coil
State the charging face position face of third magnetic core.
Optionally, first magnetic core, the second magnetic core, third magnetic core constitute doorframe shape.
Optionally, second magnetic core is set to ipsilateral or described second magnetic of first magnetic core with third magnetic core
Core and third magnetic core are respectively arranged at the two sides of first magnetic core.
Optionally, by adjusting length and the position of the magnetic conductor, the phase of second magnetic core and third magnetic core is adjusted
To position.
Optionally, by adjusting length and the position of first magnetic conductor and/or the second magnetic conductor, adjustment described second
The relative position of magnetic core and third magnetic core.
Optionally, at least two core structures are assembled into magnetic core group, the first magnetic core of adjacent two core structure, second
Magnetic core is respectively corresponded with third magnetic core to be connected, each coil electric serial or parallel connection.
Optionally, the core body is made of ferrite, and the shielded layer is made of aluminium.
Optionally, the coil of first magnetic core and winding thereon, and be covered on first magnetic core and coil
Shielded layer, be installed in same housing jointly with converter.
From the above it can be seen that the core structure of wireless charging system provided by the utility model, including by first
The core body that magnetic core, the second magnetic core, third magnetic core are constituted, the second magnetic core and third magnetic core are connected to the two of the first magnetic core
End, wound around coil on the first magnetic core, the electromagnetic field that coil generates can reach the second magnetic core and third magnetic core along the first magnetic core, and second
Magnetic core and third magnetic core are equipped with charging face, remove charging face region, and the other positions of core structure can cover shielded layer；This reality
With the novel electromagnetic field intensity that can reduce between transmitting coil and receiving coil, the safety of wireless charging is improved, moreover, logical
The first magnetic core, the second magnetic core, the relative position setting of third magnetic core, thickness and area setting are crossed, can be realized various deformation
Structure type can adaptively be installed on the corresponding position of different application scene, such as be used as wireless charging receiver
A part be installed in different automobile types, a part as wireless charging emitter is installed on different charge positions.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overlooking structure diagram of the core structure of the utility model first embodiment；
Fig. 2 is the positive structure diagram of the core structure of the utility model first embodiment；
Fig. 3 is the side structure schematic view of the core structure of the utility model first embodiment；
Fig. 4 is the structural schematic diagram that shielded layer is arranged in core structure shown in Fig. 3；
Fig. 5 is using the core structure of the utility model first embodiment as caused by transmitting coil and receiving coil
Magnetic line of force distribution schematic diagram；
Fig. 6 is the side view distribution schematic diagram of structure shown in Fig. 5；
Fig. 7 is the overlooking structure diagram of the core structure of the utility model second embodiment；
Fig. 8 is that the side structure schematic view of shielded layer is arranged in the core structure of the utility model second embodiment；
Fig. 9 is the top view of structure shown in Fig. 8；
Figure 10 is the bottom view of structure shown in Fig. 8；
Figure 11 is the core structure of the utility model second embodiment as magnetic caused by transmitting coil and receiving coil
Line of force distribution schematic diagram；
Figure 12 is the overlooking structure diagram of the core structure of the utility model 3rd embodiment；
Figure 13 is the structural schematic diagram that core structure shown in two Figure 12 fits together；
Figure 14 is that the part core structure of the utility model first embodiment and converter are installed on the knot in same housing
Structure schematic diagram.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with specific embodiment, and
Referring to attached drawing, the utility model is further described.
It should be noted that all statements for using " first " and " second " are for area in the utility model embodiment
Be divided to two non-equal entities of same names or non-equal parameter, it is seen that " first " " second " only for statement convenience,
It should not be construed as the restriction to the utility model embodiment, subsequent embodiment no longer illustrates this one by one.
Fig. 1 is the overlooking structure diagram of the core structure of the utility model first embodiment；Fig. 2 is the utility model the
The positive structure diagram of the core structure of one embodiment；Fig. 3 is the side view of the core structure of the utility model first embodiment
Structural schematic diagram.As shown, the core structure of wireless charging system disclosed in the utility model embodiment, including coil 1, magnetic
Core ontology 2, shielded layer 3.
Core body 2 includes the first magnetic core 20, the second magnetic core 21, third magnetic core 22, the second magnetic core 21 and third magnetic core 22
It is connected to the both ends 201,202 of the first magnetic core 20.
Fig. 5 is using the core structure of the utility model first embodiment as caused by transmitting coil and receiving coil
Magnetic line of force distribution schematic diagram；Fig. 6 is the side view distribution schematic diagram of structure shown in Fig. 5.As shown, coil 1 is wound in the first magnetic
On core 20, coil is not provided on the second magnetic core 21 and third magnetic core 22, the electromagnetic field that coil 1 generates is concentrated mainly on the first magnetic core
In 20, electromagnetic field can arrive separately at second magnetic core 21 and third magnetic core 22 at 20 both ends of the first magnetic core along the first magnetic core 20.
Fig. 4 is the structural schematic diagram that shielded layer is arranged in core structure shown in Fig. 3.As shown, the utility model embodiment
In, core structure includes the shielded layer 3 of non-close, and there is no the closings of main flux in wounded core ontology 2 to return on shielded layer 3
Road influences main flux and energy transmission to prevent from generating the induced current around main flux in shielded layer 3.Specifically:
As Figure 4-Figure 6, the second magnetic core 21 has charging face 211, in the first magnetic core 20, coil 1 and the second magnetic core 21
With the non-charging face setting shielded layer 3 of third magnetic core 22, the charging face of the second magnetic core 21 and third magnetic core 22 is not provided with shielded layer
3.During wireless charging, the magnetic core in the charging face 211 and receiving coil of the second magnetic core 21 of the core structure of transmitting coil
The 211 position face of charging face of second magnetic core 21 of structure, the area between two charging faces 211 of no shielded layer 3 covering
Domain generates electromagnetic field couples.Equally, third magnetic core 22 has charging face, during wireless charging, the core structure of transmitting coil
Third magnetic core 22 charging face and receiving coil core structure third magnetic core 22 charging face position face, do not shielding
The region covered between two charging faces of the covering of layer 3 generates electromagnetic field couples.In addition, the first magnetic of the core structure of transmitting coil
Core 20 and coil 1 and the first magnetic core 20 and coil 1 of the core structure of receiving coil are out of alignment right, but are located at the second magnetic core
21 with the two sides of third magnetic core 22, enable to the intensity distribution of coupled electromagnetic field more uniform.
In order to reach better shield effectiveness, in addition to the charging face of the second magnetic core 21 and the charging face of third magnetic core 22,
The other parts of core structure are respectively provided with shielded layer 3, so that the electromagnetic field that coil 1 generates can only pass through the charging of the second magnetic core 21
Face and the charging face of third magnetic core 22 reach extraneous.
As shown in Figure 1, the first magnetic core 20 has the first area S1=L1*M1, the second magnetic core in the utility model embodiment
21 have second area S2=L2*M2, and third magnetic core 22 has the first area S3=L3*M3.In the condition of same transmission power
Under, to reduce electromagnetic field intensity, the region area of electromagnetic field must be increased, that is, for realizing the second magnetic of external electromagnetic field coupling
The second area of core 21, the third area of third magnetic core 22 as far as possible greatly, and should be not belonging to external electromagnetic field coupling by shielded layer shielding
The first area of first magnetic core 20 in region is closed without big, while considering the size and area of whole magnetic core structure, the first magnetic core
20 the first area should be as small as possible.
In the utility model embodiment, the second area of the second magnetic core 21, the third area of third magnetic core 22 are the first magnetic
At least three times of first area of core 20, the second area can be equal or unequal with third area, depending on specifically making
It is configured with scene.For example, first area is configured to 0.01 square metre, the second area is configured to 0.5 square metre,
The third area is configured to 0.5 square metre.
As shown in Fig. 2, in the utility model embodiment, since the first area of the first magnetic core 20 is smaller, magnetic in order to prevent
The thickness of core saturation, the first magnetic core 20 should be big as far as possible, so that the section of the electromagnetic field by the vertical direction of the first magnetic core 20
Product is sufficiently large；The overall dimensions and mounting condition for considering core structure simultaneously, the second magnetic core 21 and third with larger area
The thickness of magnetic core 22, the two should be as small as possible.
In the utility model embodiment, the first thickness t1 of the first magnetic core 20 is the second thickness t2 of the second magnetic core 21,
At least three times of the third thickness t3 of three magnetic cores 22.For example, the first thickness is configured to 10 centimetres, the second thickness configuration
It is 2 millimeters, the third thickness is configured to 2 millimeters.
Figure 14 is that the part core structure of the utility model first embodiment and converter are installed on the knot in same housing
Structure schematic diagram.As shown, since the shielded layer of the first magnetic core 20 and winding coil 1 thereon, covering is formed by thickness
It is roughly the same with the thickness of converter 5, so this part core structure can be installed in same housing 6 with converter 5, so that
Overall structure is more compact, reasonable, moreover it is possible to be radiated jointly using a set of radiator.
In the utility model embodiment, core body 2 is made of ferrite, and shielded layer 3 is made of aluminium.
The core structure of the utility model embodiment has the structure type of various deformation, can satisfy the peace of different automobile types
Dress and use demand.As shown in Figure 1, the second magnetic core 21 is connected to the first magnetic core 20 in the utility model first embodiment
First end 201, third magnetic core 22 are connected to the second end 202 of the first magnetic core 20, the first magnetic core 20, the second magnetic core 21, third magnetic
Core 22 constitutes doorframe shape, the middle part wound around coil 1 of the first magnetic core 21.In other embodiments, the second magnetic core 21 and third magnetic
Core 22 can be located at the same side of the first magnetic core 20, can also be located at the two sides of the first magnetic core 20.
Fig. 7 is the overlooking structure diagram of the core structure of the utility model second embodiment；Fig. 8 is the utility model the
The side structure schematic view of the core structure setting shielded layer of two embodiments；Fig. 9 is the top view of structure shown in Fig. 8；Figure 10 is
The bottom view of structure shown in Fig. 8；Figure 11 is the core structure of the utility model second embodiment as transmitting coil and receives line
Magnetic line of force distribution schematic diagram caused by enclosing.As shown, in the utility model second embodiment, core body 2` includes the
One magnetic core 20`, the second magnetic core 21`, third magnetic core 22`, the second magnetic core 21` are connected to the first end 201` of the first magnetic core 20`, the
Three magnetic core 22` are connected to the second end 202` of the first magnetic core 20` by magnetic conductor 4, can by adjust the length of magnetic conductor 4 with
The relative position of position adjustment the second magnetic core 21` and third magnetic core 22`.In other embodiments, the second magnetic core 21` and third magnetic
Core 22` can be located at the same side of the first magnetic core 20`, can also be located at the two sides of the first magnetic core 20`.
As seen in figs. 8-10, shielded layer includes the first screen being covered on the non-charging face of magnetic conductor 4 and third magnetic core 22`
Layer 30 is covered, the first magnetic core 20`, the secondary shielding layer 31 on coil 1 is covered in, is covered on the non-charging face of the second magnetic core 21`
Third shielded layer 32, and be not provided with shielding on the charging face 221` of the charging face 211` of the second magnetic core 21` and third magnetic core 22`
Layer.The charging face 211` of side view according to Fig.8, the second magnetic core 21` is blocked by magnetic conductor 4.
Wherein, the first magnetic core 20`, the second magnetic core 21`, the area of third magnetic core 22` and thickness configuration and first embodiment
Similar, the utility model is not repeating.
Figure 12 is the overlooking structure diagram of the core structure of the utility model 3rd embodiment.As shown, magnetic core sheet
Body 2`` passes through the first magnetic conductor 41 including the first magnetic core 20``, the second magnetic core 21``, third magnetic core 22``, the second magnetic core 21``
It is connected to the first end 201`` of the first magnetic core 20``, third magnetic core 22 is connected to the first magnetic core 20`` by the second magnetic conductor 42
Second end 202``, the second magnetic core of the length for adjusting the first magnetic conductor 41 and the second magnetic conductor 42 and position adjustment can be passed through
The relative position of 21` and third magnetic core 22`.In other embodiments, the second magnetic core 21`` can be located at third magnetic core 22``
The same side of first magnetic core 20`` can also be located at the two sides of the first magnetic core 20``.
Figure 13 is the structural schematic diagram that core structure shown in two Figure 12 fits together.As shown, bigger to reach
Power, two core body 2`` can be carried out to assembling and form magnetic core group and be installed in car crust, i.e., by two core bodies
The first magnetic core 20``, the second magnetic core 21`` of 2`` is respectively corresponded with third magnetic core 22`` to be connected, and two coils 1 are electrically coupled
Or it is in parallel, complete assembling.In other embodiments, multiple core structures can also be assembled according to the demand of charge power
It forms magnetic core group to be installed in automobile batteries shell, the first magnetic core 20``, the second magnetic core 21`` and the third of multiple core structures
Magnetic core 22``, which is respectively corresponded, to be connected, and multiple coils 1 are electrically coupled or parallel connection.
Wherein, the first magnetic core 20``, the second magnetic core 21``, the area of third magnetic core 22`` and thickness configuration are implemented with first
Example is similar, and the utility model is not repeating.
The device of above-described embodiment for realizing method corresponding in previous embodiment there is corresponding method to implement
The beneficial effect of example, details are not described herein.
It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not
It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under the thinking of the utility model, the above reality
Applying can also be combined between the technical characteristic in example or different embodiments, and step can be realized with random order, and be deposited
In many other variations of the different aspect of the utility model as described above, for simplicity, they are not provided in details.
In addition, to simplify explanation and discussing, and in order not to which the utility model indigestion can be made, in provided attached drawing
In can show or can not show and connect with the well known power ground of integrated circuit (IC) chip and other components.In addition,
Device can be shown in block diagram form, to avoid making the utility model indigestion, and this has also contemplated following facts,
Details i.e. about the embodiment of these block diagram arrangements be height depend on will implement the utility model platform (that is,
These details should be completely within the scope of the understanding of those skilled in the art).Elaborate detail (for example, circuit) with
In the case where the exemplary embodiment for describing the utility model, it will be apparent to those skilled in the art that can be
Without implementing the utility model in the case where these details or in the case that these details change.Therefore, this
A little descriptions should be considered as illustrative rather than restrictive.
Although having been incorporated with specific embodiment of the utility model the utility model is described, before
The description in face, many replacements of these embodiments, modifications and variations will be apparent for those of ordinary skills
's.For example, discussed embodiment can be used in other memory architectures (for example, dynamic ram (DRAM)).
The embodiments of the present invention are intended to cover fall into all such within the broad range of appended claims
Replacement, modifications and variations.Therefore, within the spirit and principle of the utility model, any omission for being made, modification, equivalent
Replacement, improvement etc., should be included within the scope of protection of this utility model.
Claims (16)
1. a kind of core structure of wireless charging system characterized by comprising
Core body, including the first magnetic core, the second magnetic core, third magnetic core, second magnetic core are connected to third magnetic core
The both ends of first magnetic core；Second magnetic core and third magnetic core are equipped with charging face；
Coil is wound on first magnetic core, and the electromagnetic field that the coil generates can reach described the along first magnetic core
Two magnetic cores and third magnetic core；
Shielded layer, is covered in the core body and coil, and the position in the charging face is not provided with the shielded layer.
2. core structure according to claim 1, which is characterized in that second magnetic core is connected to first magnetic core
One end, the third magnetic core are connected to the other end of first magnetic core by magnetic conductor.
3. core structure according to claim 1, which is characterized in that second magnetic core is connected to by the first magnetic conductor
One end of first magnetic core, the third magnetic core are connected to the other end of first magnetic core by the second magnetic conductor.
4. core structure according to claim 1 or 2 or 3, which is characterized in that the face of second magnetic core, third magnetic core
Product is at least three times of the area of first magnetic core.
5. core structure according to claim 1 or 2 or 3, which is characterized in that the thickness of first magnetic core is described
At least three times of thickness of two magnetic cores, third magnetic core.
6. core structure according to claim 2, which is characterized in that cover the shielded layer on the magnetic conductor.
7. core structure according to claim 3, which is characterized in that covered on first magnetic conductor, the second magnetic conductor
The shielded layer.
8. core structure described according to claim 1 or 6 or 7, which is characterized in that the shielded layer is non-close shielded layer,
There is no the loops around main flux in the core body on the shielded layer.
9. core structure according to claim 1 or 2 or 3, which is characterized in that the core structure is correspondingly arranged in transmitting
In coil and receiving coil, charging face and the receiving coil of second magnetic core of the core structure of the transmitting coil
The charging face position face of second magnetic core of core structure, the third magnetic core of the core structure of the transmitting coil
The charging face position face of the third magnetic core of the core structure of charging face and the receiving coil.
10. core structure according to claim 1, which is characterized in that first magnetic core, the second magnetic core, third magnetic core
Constitute doorframe shape.
11. core structure according to claim 1 or 2 or 3, which is characterized in that second magnetic core is set with third magnetic core
Ipsilateral or described second magnetic core and third magnetic core for being placed in first magnetic core are respectively arranged at the two of first magnetic core
Side.
12. core structure according to claim 2, which is characterized in that by adjusting length and the position of the magnetic conductor,
Adjust the relative position of second magnetic core and third magnetic core.
13. core structure according to claim 3, which is characterized in that by adjusting first magnetic conductor and/or second
The length of magnetic conductor and position adjust the relative position of second magnetic core and third magnetic core.
14. core structure according to claim 3, which is characterized in that at least two core structures are assembled into magnetic core
Group, the first magnetic core, the second magnetic core of adjacent two core structure are respectively corresponded with third magnetic core to be connected, the series connection of each coil electric or
It is in parallel.
15. core structure according to claim 1, which is characterized in that the core body is made of ferrite, the screen
Layer is covered to be made of aluminium.
16. core structure according to claim 1, which is characterized in that the coil of first magnetic core and winding thereon,
And it is covered in the shielded layer on first magnetic core and coil, it is installed in same housing jointly with converter.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109215961A (en) * | 2018-09-04 | 2019-01-15 | 北京有感科技有限责任公司 | A kind of core structure of wireless charging system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109215961A (en) * | 2018-09-04 | 2019-01-15 | 北京有感科技有限责任公司 | A kind of core structure of wireless charging system |
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Address after: 230088 China (Anhui) pilot Free Trade Zone, Hefei, Anhui Province a3-15, 14 / F, block a, building J1, phase II, innovation industrial park, No. 2800, innovation Avenue, high tech Zone, Hefei Patentee after: Hefei Yougan Technology Co.,Ltd. Address before: D412-1, floor 3, block D, No. 9, Shangdi Third Street, Haidian District, Beijing 100089 Patentee before: BEIJING INVISPOWER TECHNOLOGY Co.,Ltd. |