CN204480864U - Transformer coil and transformer - Google Patents
Transformer coil and transformer Download PDFInfo
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- CN204480864U CN204480864U CN201520056401.9U CN201520056401U CN204480864U CN 204480864 U CN204480864 U CN 204480864U CN 201520056401 U CN201520056401 U CN 201520056401U CN 204480864 U CN204480864 U CN 204480864U
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Abstract
The utility model discloses a kind of transformer coil, this transformer coil comprises U-shaped magnetic core and wire, and U-shaped magnetic core comprises the first magnetic post and the second magnetic post, and wire is made up of some share wires; On first magnetic post and the second magnetic post, all coiling has wire, and the number of turn sum of the wire that the first magnetic post and the second magnetic post coil is 2N+1 circle, wherein, N be more than or equal to zero positive integer; A part of sub-conductor of at least one circle wire forms the first sub-conductor, and another part sub-conductor forms the second sub-conductor, and the first sub-conductor is coiling on the first magnetic post, and the second sub-conductor is coiling on the second magnetic post.The invention also discloses a kind of transformer.When the number of turn sum of the wire that the first magnetic post and the second magnetic post coil is odd number circle, the wire that can effectively balanced first magnetic post and the second magnetic post coil, make the first magnetic post more consistent with the wire number of turn that the second magnetic post coils, improve the coupling coefficient of transformer.
Description
Technical field
The utility model relates to wireless charging technical field, particularly relates to a kind of transformer coil and transformer.
Background technology
Wireless charging is by technology such as electromagnetic induction, charging device and by the air between charging device in electric energy transmitting, thus for being carried out the technology of charging by the battery of charging device.Because wireless charging is relative to wired charging, have not easily leak electricity, the advantage such as full automatic working and unattended operation, be widely used at present in charging electric vehicle technology.
In the prior art, electric automobile is provided with secondary coil, the parking stall of wireless charging system is provided with primary coil.When resting in the preset charged position on parking stall when electric automobile, primary coil and secondary coil composition loosely coupled transformer, the high frequency magnetic field that primary coil is launched can be received by secondary coil by the mode of electromagnetic induction or electric and magnetic oscillation, and then be converted to electric energy by secondary coil, thus realize the wireless transmission of electric energy, be reached for the object that electric automobile carries out wireless charging.
At present, in loosely coupled transformer, general employing single-column magnetic core coil or U-shaped magnetic core coil.Because U-shaped magnetic core coil has greater advantage in coupling coefficient and dislocation sensitiveness, be therefore often applied to high-power wireless charging occasion, such as, be often applied to electric automobile wireless charging technical field.
The magnetic core of U-shaped magnetic core coil comprises two magnetic core side columns, in order to improve coupling coefficient, usually needs to make the number of turns on two magnetic core side columns identical, consistent to ensure the magnetomotive force of two magnetic core side columns.But when required number of turns is odd number circle, if required number of turns is 2N+1 circle, then the number of turns be difficult on guarantee two magnetic core side columns is identical.With reference to the structural representation that Fig. 1, Fig. 1 are U-shaped magnetic core coil in prior art, in prior art, coiling N circle on a usual magnetic core side column wherein, coiling N+1 circle on another magnetic core side column, because the number of turns of two magnetic core side columns is inconsistent, will cause transformer coupling coefficient to reduce.If consistent by the number of turns increasing or reduce a circle to make on two magnetic core side columns, larger change can be brought to the wireless charging system parameter originally calculated again, wireless charging system even can be caused to realize.
Utility model content
Main purpose of the present utility model is to provide a kind of transformer coil and transformer, is intended to the coupling coefficient improving transformer.
The transformer coil that the utility model provides comprises U-shaped magnetic core and wire, and described U-shaped magnetic core comprises the first magnetic post and the second magnetic post, and described wire is made up of some share wires; On described first magnetic post and the second magnetic post, all coiling has described wire, and the number of turn sum of the described wire that described first magnetic post and the second magnetic post coil is 2N+1 circle, wherein, N be more than or equal to zero positive integer; Described at least one circle, a part of sub-conductor of wire forms the first sub-conductor, and another part sub-conductor forms the second sub-conductor, and described first sub-conductor is coiling on described first magnetic post, and described second sub-conductor is coiling on described second magnetic post.
Preferably, if described wire is made up of 2M share wire, wherein, M be greater than zero positive integer, described first sub-conductor and described second sub-conductor form by M share wire.
Preferably, if described wire is made up of 2M+1 share wire, wherein, M be greater than zero positive integer, described first sub-conductor is made up of M+1 share wire, and described second sub-conductor is made up of M share wire; Or described first sub-conductor is made up of M share wire, described second sub-conductor is made up of M+1 share wire.
Preferably, the wire except described first sub-conductor and the second sub-conductor of described U-shaped magnetic core coiling is set to whole stock wire, and the number of turn of the whole stock wire of described first magnetic post coiling equals the number of turn of the whole stock wire of described second magnetic post coiling.
Preferably, described first magnetic post and the second magnetic post all coil whole stock wire described in N circle.
Preferably, the described wire number of turn for forming the first sub-conductor and the second sub-conductor is a circle.
Preferably, described first sub-conductor coils in described first magnetic post peripheral, and described first sub-conductor periphery coiling has described N circle wire; Or described N circle wire coiling is peripheral in described first magnetic post, and described first sub-conductor coils in described N circle wire peripheral.
Preferably, described second sub-conductor coils in described second magnetic post peripheral, and described second sub-conductor periphery coiling has described N circle wire; Or described N circle wire coiling is peripheral in described second magnetic post, and described second sub-conductor coils in described N circle wire peripheral.
In addition, the transformer that the utility model provides, described transformer comprises primary coil and secondary coil, described primary coil is transformer coil, and/or described secondary coil is transformer coil, described transformer coil comprises U-shaped magnetic core and wire, and described U-shaped magnetic core comprises the first magnetic post and the second magnetic post, and described wire is made up of some share wires; On described first magnetic post and the second magnetic post, all coiling has described wire, and the number of turn sum of the described wire that described first magnetic post and the second magnetic post coil is 2N+1 circle, wherein, N be more than or equal to zero positive integer; Described at least one circle, a part of sub-conductor of wire forms the first sub-conductor, and another part sub-conductor forms the second sub-conductor, and described first sub-conductor is coiling on described first magnetic post, and described second sub-conductor is coiling on described second magnetic post.
The transformer coil that the utility model provides comprises U-shaped magnetic core and has the wire of some share wires, by a part of sub-conductor of at least one circle wire is formed the first sub-conductor, and another part is formed the second sub-conductor, and the first sub-conductor is coiling on the first magnetic post, second sub-conductor is coiling on the second magnetic post, when the number of turn sum of the wire that the first magnetic post and the second magnetic post coil is odd number circle, the wire that can effectively balanced first magnetic post and the second magnetic post coil, make the first magnetic post more consistent with the wire number of turn that the second magnetic post coils, improve the coupling coefficient of transformer.
Accompanying drawing explanation
Fig. 1 is the structural representation of U-shaped magnetic core coil in prior art;
Fig. 2 is the structural representation of the utility model transformer coil first embodiment;
Fig. 3 is the structural representation of the utility model transformer coil second embodiment;
Fig. 4 is the structural representation of the utility model transformer coil the 3rd embodiment;
Fig. 5 is that the utility model transformer coil contrasts figure with the coupling coefficient of prior art transformer coil.
The realization of the utility model object, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of transformer coil.
With reference to the structural representation that Fig. 2 to Fig. 4, Fig. 2 are the utility model transformer coil first embodiment, Fig. 3 is the structural representation of the utility model transformer coil second embodiment, and Fig. 4 is the structural representation of the utility model transformer coil the 3rd embodiment.
In one embodiment, this transformer coil comprises U-shaped magnetic core 10 and wire 20, and described U-shaped magnetic core 10 comprises the first magnetic post 11 and the second magnetic post 12, and described wire 20 is made up of some share wires; On described first magnetic post 11 and the second magnetic post 12, all coiling has described wire 20, and on described first magnetic post 11 and the second magnetic post 12, the number of turn sum of the described wire 20 of coiling is 2N+1 circle, wherein, N be more than or equal to zero positive integer; Described at least one circle, a part of sub-conductor of wire 20 forms the first sub-conductor 21, another part sub-conductor forms the second sub-conductor 22, and described first sub-conductor 21 is coiling on described first magnetic post 11, described second sub-conductor 22 is coiling on described second magnetic post 12.
In the present embodiment, above-mentioned transformer coil can be used as the coil of loosely coupled transformer, can be used for electric motor car wireless charging.The U-shaped setting substantially of above-mentioned U-shaped magnetic core 10.Above-mentioned wire 20 coils a circle around described first magnetic post 11 or the second magnetic post 12 and is expressed as a circle, and above-mentioned first sub-conductor 21 coils a circle and above-mentioned second sub-conductor 22 coils a circle around described second magnetic post 12 is referred to as a circle around described first magnetic post 11.
The number of share of stock of the sub-conductor that the number of share of stock of the sub-conductor that the first sub-conductor 21 comprises and the second sub-conductor 22 comprise can be arranged according to actual needs, preferably, when the number of share of stock of the sub-conductor that wire 20 comprises is even number, the number of share of stock of the sub-conductor that the first sub-conductor 21 comprises equals the number of share of stock of the sub-conductor that the second sub-conductor 22 comprises, namely described wire 20 is established to be made up of 2M share wire, wherein, M be greater than zero positive integer, described first sub-conductor 21 and described second sub-conductor 22 form by M share wire; Or when the number of share of stock of the sub-conductor that wire 20 comprises is odd number, the number of share of stock of the sub-conductor that the number of share of stock of the sub-conductor that the first sub-conductor 21 comprises comprises with the second sub-conductor 22 differs one, namely described wire 20 is established to be made up of 2M+1 share wire, wherein, M be greater than zero positive integer, described first sub-conductor 21 is made up of M+1 share wire, described second sub-conductor 22 is made up of M share wire, or described first sub-conductor 21 is made up of M share wire, described second sub-conductor 22 is made up of M+1 share wire.
Above-mentioned wire 20 can be enamelled wire or silk-covered wire etc., and is made up of some strands of twisted wires.It should be noted that the wire 20 one piece, all share wires of wire 20 being wound to U-shaped magnetic core 10 is set to whole stock wire 23; After wire 20 is divided into two parts according to number of share of stock, and will wherein a part be coiling on described first magnetic post 11, another part be coiling on the second magnetic post 12, and this part wire 20 is called the first sub-conductor 21 and the second sub-conductor 22.Namely the wire 20 except described first sub-conductor 21 and the second sub-conductor 22 that described U-shaped magnetic core 10 coils is set to whole stock wire 23.Preferably, the number of turn of the whole stock wire 23 of described first magnetic post 11 coiling equals the number of turn of the whole stock wire 23 that described second magnetic post 12 coils.Preferably, the above-mentioned number of turn being divided into the wire 20 of the first sub-conductor 21 and the second sub-conductor 22 is odd number circle.More preferably, the number of turns of the first sub-conductor 21 of described first magnetic post 11 coiling equals the number of turns of the second sub-conductor 22 that described second magnetic post 12 coils.Such as, the number of turn of the whole stock wire 23 of the number of turn of the whole stock wire 23 that the first magnetic post 11 coils and the coiling of the second magnetic post 12 is two circles, the number of turns of the first sub-conductor 21 that the first magnetic post 11 coils is a circle, the number of turns of the second sub-conductor 22 that the second magnetic post 12 coils is a circle, therefore, first sub-conductor 21 and the second sub-conductor 22 can be referred to as a circle, so the total number of turns of the wire 20 that above-mentioned U-shaped disk coils is five circles, by at least one circle wire 20 being divided into the first sub-conductor 21 and the second sub-conductor 22, and the first sub-conductor 21 is coiling on the first magnetic post 11, second sub-conductor 22 is coiling on the second magnetic post 12, thus make the first magnetic post 11 more consistent with the turn ratio of the wire 20 of coiling on the second magnetic post 12, improve the coupling coefficient of transformer.
The transformer coil that the utility model provides comprises U-shaped magnetic core 10 and has the wire 20 of some share wires, by a part of sub-conductor of at least one circle wire 20 is formed the first sub-conductor 21, and another part is formed the second sub-conductor 22, and the first sub-conductor 21 is coiling on the first magnetic post 11, second sub-conductor 22 is coiling on the second magnetic post 12, when on the first magnetic post 11 and the second magnetic post 12, the number of turn sum of the wire 20 of coiling is odd number circle, can the wire 20 of coiling on balanced first magnetic post 11 and the second magnetic post 12 effectively, make the first magnetic post 11 more consistent with wire 20 turn ratio of coiling on the second magnetic post 12, improve the coupling coefficient of transformer.
Preferably, described first magnetic post 11 and the second magnetic post 12 all coil whole stock wire 23 described in N circle.More preferably, the number of turn of the described wire 20 for forming the first sub-conductor 21 and the second sub-conductor 22 is a circle.Namely by calculating, when the number of turn that the wire 20 required for above-mentioned U-shaped magnetic core 10 coils is 2N+1 circle, then on the first magnetic post 11 He on the second magnetic post 12, all coil the whole stock wire 23 of N circle, and a remaining circle wire 20 is divided into the first sub-conductor 21 and the second sub-conductor 22, and the first sub-conductor 21 is coiling on the first magnetic post 11, the second sub-conductor 22 is coiling on the second magnetic post 12.Thus be not only convenient to coiling, improve the production efficiency of transformer coil, and the coupling coefficient of transformer can be improved further.
The concrete mode that above-mentioned wire 20 is coiling to U-shaped magnetic core 10 can be arranged according to actual needs.
For the first magnetic post 11: described first sub-conductor 21 coils in described first magnetic post 11 peripheral, and described first sub-conductor 21 periphery coiling has described N circle wire 20, namely when to the first magnetic post 11 coiled wires 20, when starting to coil, first wire 20 is divided into the first sub-conductor 21 and the second sub-conductor 22, then the first sub-conductor 21 is coiling to the first magnetic post 11 peripheral, now, second sub-conductor 22 can coil in the second magnetic post 12 peripheral simultaneously, after the first sub-conductor 21 is coiling to the first magnetic post 11 periphery, the leading-out terminal of the first sub-conductor 21 and the second sub-conductor 22 is synthesized whole stock wire 23, then the whole stock wire 23 after synthesis is being coiling to the first sub-conductor 21 periphery, and the number of turn that whole stock wire 23 coils is N circle, or, as shown in Figures 2 to 4, described N circle wire 20 coils in described first magnetic post 11 peripheral, and described first sub-conductor 21 coils in described N circle wire 20 peripheral, namely when to the first magnetic post 11 coiled wires 20, first whole stock wire 23 is coiling to the first magnetic post 11 peripheral, and the number of turn that whole stock wire 23 coils is N circle, and then whole stock wire 23 is divided into the first sub-conductor 21 and the second sub-conductor 22, and it is peripheral the first sub-conductor 21 to be coiling to the whole stock wire 23 of N circle, now, the second sub-conductor 22 can coil in the second magnetic post 12 peripheral simultaneously.
For the second magnetic post 12: as shown in Figure 2, described second sub-conductor 22 coils in described second magnetic post 12 peripheral, and described second sub-conductor 22 periphery coiling has described N circle wire 20, namely when to the second magnetic post 12 coiled wires 20, when starting to coil, first wire 20 is divided into the first sub-conductor 21 and the second sub-conductor 22, then the first sub-conductor 21 is coiling to the second magnetic post 12 peripheral, now, second sub-conductor 22 can coil in the first magnetic post 11 peripheral simultaneously, after the first sub-conductor 21 is coiling to the second magnetic post 12 periphery, the leading-out terminal of the first sub-conductor 21 and the second sub-conductor 22 is synthesized whole stock wire 23, then the whole stock wire 23 after synthesis is being coiling to the first sub-conductor 21 periphery, and the number of turn that whole stock wire 23 coils is N circle, or, as shown in Figure 3 and Figure 4, described N circle wire 20 coils in described second magnetic post 12 peripheral, and described second sub-conductor 22 coils in described N circle wire 20 peripheral, namely when to the second magnetic post 12 coiled wires 20, first whole stock wire 23 is coiling to the second magnetic post 12 peripheral, and the number of turn that whole stock wire 23 coils is N circle, and then whole stock wire 23 is divided into the first sub-conductor 21 and the second sub-conductor 22, and it is peripheral the first sub-conductor 21 to be coiling to the whole stock wire 23 of N circle, now, the second sub-conductor 22 can coil in the first magnetic post 11 peripheral simultaneously.
It should be noted that can to intersect to the process of the first magnetic post 11 and the second magnetic post 12 coiled wires 20 and carry out.Such as, if the number of turn of the wire 20 of the required coiling of above-mentioned transformer coil is five circles, the number of share of stock of the sub-conductor that wire 20 comprises is four strands.
The first coiled fashion is: as shown in Figure 2, by a point inlet wire of the first magnetic post 11, first on the first magnetic post 11, coil the whole stock wire 23 of two circles, then at a point, wire 20 is divided into the first sub-conductor 21 and the second sub-conductor 22, and the first sub-conductor 21 and the second sub-conductor 22 respectively comprise two share wires, first sub-conductor 21 is coiling to the periphery of the whole stock wire 23 of two circles on the first magnetic post 11, and the first sub-conductor 21 is by the outlet of a point, and by the e point inlet wire of the second sub-conductor 22 by the second magnetic post 12, and be coiling to the periphery of the second magnetic post 12, as shown in Figure 2, second sub-conductor 22 is close to the second magnetic post 12 and is arranged, and then the leading-out terminal of the first sub-conductor 21 and the second sub-conductor 22 is combined into whole stock wire 23 (namely comprising the wire 20 of four share wires) at the e point sink of the second magnetic post 12, again the whole stock wire 23 converged is coiling on the second magnetic post 12 and (is namely coiling in above-mentioned reserved space), preferably coiled outward by interior, and the number of turn being coiling to the whole stock wire 23 on the second magnetic post 12 is two circles, and finally by the e point outlet of the second magnetic post 12, thus complete coiling.
The second coiled fashion is: as shown in Figure 3, by a point inlet wire of the first magnetic post 11, first on the first magnetic post 11, coil the whole stock wire 23 of two circles, then at a point, wire 20 is divided into the first sub-conductor 21 and the second sub-conductor 22, and the first sub-conductor 21 and the second sub-conductor 22 respectively comprise two share wires, first sub-conductor 21 is coiling to the periphery of the whole stock wire 23 of two circles on the first magnetic post 11, and the first sub-conductor 21 is by the outlet of a point, and by the e point inlet wire of the second sub-conductor 22 by the second magnetic post 12, and be coiling to the periphery of the second magnetic post 12, as shown in Figure 3, the space for coiling whole stock wire 23 is reserved with between second sub-conductor 22 and the second magnetic post 12, and then the leading-out terminal of the first sub-conductor 21 and the second sub-conductor 22 is combined into whole stock wire 23 (namely comprising the wire 20 of four share wires) at the e point sink of the second magnetic post 12, again the whole stock wire 23 converged is coiling on the second magnetic post 12 and (is namely coiling in above-mentioned reserved space), preferably from outer toward interior coiling, and the number of turn being coiling to the whole stock wire 23 on the second magnetic post 12 is two circles, and finally by the e point outlet of the second magnetic post 12, thus complete coiling.
In addition, when the number of share of stock of the sub-conductor that above-mentioned wire 20 comprises is odd number stock, such as, when being five bursts, the number of share of stock of the sub-conductor that the first sub-conductor 21 comprises can be three strands, and the number of share of stock of the sub-conductor that the second sub-conductor 22 comprises can be two strands (as shown in Figure 4); Or the number of share of stock of the sub-conductor that the first sub-conductor 21 comprises is two strands, the number of share of stock of the sub-conductor that the second sub-conductor 22 comprises is three strands.
It should be noted that when above-mentioned wire 20 being divided into the first sub-conductor 21 and the second sub-conductor 22, both can adopt manual mode, and also automatically can be realized by equipment, and specifically can select according to actual needs.
The utility model provides a kind of transformer further, and described transformer comprises primary coil and secondary coil, and described primary coil can for the transformer coil described in above-described embodiment, and the structure of transformer coil can refer to above-described embodiment, does not repeat them here.Described secondary coil can for the transformer coil described in above-described embodiment, and the structure of transformer coil can refer to above-described embodiment, does not repeat them here.Naturally, the transformer due to the present embodiment have employed the technical scheme of above-mentioned transformer coil, and therefore this transformer has all beneficial effects of above-mentioned transformer coil.
With reference to Fig. 5, Fig. 5 is that the utility model transformer coil contrasts figure with the coupling coefficient of prior art transformer coil, and namely Fig. 5 illustrates the one-to-one relationship between air gap value between the primary coil of transformer and secondary coil, the coupling coefficient of the utility model transformer coil and the coupling coefficient of prior art transformer coil.The present embodiment is described to coil five circle wires on U-shaped magnetic core.Visible by Fig. 5, the coupling coefficient of the transformer coil that the utility model provides is apparently higher than prior art.
These are only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a transformer coil, is characterized in that, described transformer coil comprises U-shaped magnetic core and wire, and described U-shaped magnetic core comprises the first magnetic post and the second magnetic post, and described wire is made up of some share wires; On described first magnetic post and the second magnetic post, all coiling has described wire, and the number of turn sum of the described wire that described first magnetic post and the second magnetic post coil is 2N+1 circle, wherein, N be more than or equal to zero positive integer; Described at least one circle, a part of sub-conductor of wire forms the first sub-conductor, and another part sub-conductor forms the second sub-conductor, and described first sub-conductor is coiling on described first magnetic post, and described second sub-conductor is coiling on described second magnetic post.
2. transformer coil as claimed in claim 1, is characterized in that, if described wire is made up of 2M share wire, wherein, M be greater than zero positive integer, described first sub-conductor and described second sub-conductor form by M share wire.
3. transformer coil as claimed in claim 1, is characterized in that, if described wire is made up of 2M+1 share wire, wherein, M be greater than zero positive integer, described first sub-conductor is made up of M+1 share wire, and described second sub-conductor is made up of M share wire; Or described first sub-conductor is made up of M share wire, described second sub-conductor is made up of M+1 share wire.
4. transformer coil as claimed in claim 1, it is characterized in that, the wire except described first sub-conductor and the second sub-conductor of described U-shaped magnetic core coiling is set to whole stock wire, and the number of turn of the whole stock wire of described first magnetic post coiling equals the number of turn of the whole stock wire of described second magnetic post coiling.
5. transformer coil as claimed in claim 4, it is characterized in that, described first magnetic post and the second magnetic post all coil whole stock wire described in N circle.
6. transformer coil as claimed in claim 5, it is characterized in that, the described wire number of turn for forming the first sub-conductor and the second sub-conductor is a circle.
7. transformer coil as claimed in claim 6, is characterized in that, described first sub-conductor coils in described first magnetic post peripheral, and described first sub-conductor periphery coiling has described N circle wire; Or described N circle wire coiling is peripheral in described first magnetic post, and described first sub-conductor coils in described N circle wire peripheral.
8. transformer coil as claimed in claim 6, is characterized in that, described second sub-conductor coils in described second magnetic post peripheral, and described second sub-conductor periphery coiling has described N circle wire; Or described N circle wire coiling is peripheral in described second magnetic post, and described second sub-conductor coils in described N circle wire peripheral.
9. a transformer, described transformer comprises primary coil and secondary coil, it is characterized in that, described primary coil is the transformer coil as described in any one of claim 1 to 8, and/or described secondary coil is the transformer coil as described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056401.9U CN204480864U (en) | 2015-01-27 | 2015-01-27 | Transformer coil and transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520056401.9U CN204480864U (en) | 2015-01-27 | 2015-01-27 | Transformer coil and transformer |
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| Publication Number | Publication Date |
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| CN204480864U true CN204480864U (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520056401.9U Withdrawn - After Issue CN204480864U (en) | 2015-01-27 | 2015-01-27 | Transformer coil and transformer |
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| CN (1) | CN204480864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700994A (en) * | 2015-01-27 | 2015-06-10 | 中兴新能源汽车有限责任公司 | Transformer coil, winding method of transformer coil and transformer |
-
2015
- 2015-01-27 CN CN201520056401.9U patent/CN204480864U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104700994A (en) * | 2015-01-27 | 2015-06-10 | 中兴新能源汽车有限责任公司 | Transformer coil, winding method of transformer coil and transformer |
| CN104700994B (en) * | 2015-01-27 | 2017-05-24 | 中兴新能源汽车有限责任公司 | Transformer coil, winding method of transformer coil and transformer |
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Granted publication date: 20150715 Effective date of abandoning: 20170524 |
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