CN208316418U - A kind of wireless charging LCC compensation circuit and its radiator structure - Google Patents
A kind of wireless charging LCC compensation circuit and its radiator structure Download PDFInfo
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- CN208316418U CN208316418U CN201821050145.2U CN201821050145U CN208316418U CN 208316418 U CN208316418 U CN 208316418U CN 201821050145 U CN201821050145 U CN 201821050145U CN 208316418 U CN208316418 U CN 208316418U
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- wireless charging
- compensation circuit
- lcc
- lcc compensation
- resonant inductance
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- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 9
- 239000004519 grease Substances 0.000 claims description 11
- 229920001296 polysiloxane Polymers 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 7
- 239000011889 copper foil Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 229920002456 HOTAIR Polymers 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 230000001939 inductive effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000001131 transforming Effects 0.000 description 1
Abstract
The utility model discloses a kind of wireless charging LCC compensation circuit and its radiator structure, wireless charging LCC compensation circuit includes wireless charging energy transmitting end LCC compensation circuit and receiving end LCC compensation circuit；Transmitting terminal LCC compensation circuit includes resonant inductance Lf1, resonant capacitance Cf1, compensating electric capacity Cp1With primary side transmitting coil L1；Receiving end LCC compensation circuit includes resonant inductance Lf2, resonant capacitance Cf2, compensating electric capacity Cp2With secondary side receiving coil L2；Resonant inductance Lf1And Lf2Structure is identical, is wireless charging high-frequency resonant inductance；The wireless charging high-frequency resonant inductance includes EE type magnetic core, insulating trip and circular coil；The radiator structure of wireless charging LCC compensation circuit includes LCC capacitor board, cooling fin, radiator, insulating ceramic film and two radiator fans；The utility model devises a kind of high-frequency resonant induction structure and its entire circuit heat dissipation structure, solves the problems, such as to generate heat in LCC compensation circuit serious, improves the stability of LCC compensation circuit.
Description
Technical field
The utility model belong to wireless power transmission technical field more particularly to a kind of wireless charging LCC compensation circuit and
Its radiator structure.
Background technique
Due to problem of environmental pollution and petroleum resources problem, electric car industry starts to recover.Relative to fuel vehicle, electricity
Electrical automobile has zero-emission, reduces noise pollution, the advantages such as automobile component is few, reliability is high, type be broadly divided into pure electric vehicle,
Fuel cell and mixed motivity type.Rapid application due to electric car in the fields such as private car and public transport, it is involved
Battery boosting technology become the important foundation support system and electric vehicle industrialization and commercialization process of electric car
Important link.
In this background, charging batteries of electric automobile technology obtains very fast development.Wireless charging skill at this stage
Art is held in both hands by everybody heat, plays important application in many occasions.However, first, EMR electromagnetic resonance manifold type wireless charging
As one kind important in wireless charging technology, when designing charging system, since the resonance current in LCC compensation circuit is handed over
Flow component is very big, almost without DC component, so that inductance currently on the market generates heat seriously in use, it cannot
Meet requirement.Second, at present wireless charging working frequency in 85KHz, even up to MHz, in the market can for a long time
The inductance fever of work in high frequency is serious, is not able to satisfy requirement.Based on the above two o'clock, a reliable wireless charging is designed
Electric LCC compensation circuit and its radiator structure are of crucial importance.
Summary of the invention
The characteristics of the utility model combining wireless charging technique, to solve the problems of the prior art, in wireless charging LCC
In compensation circuit, by designing a kind of high-frequency resonant inductance and its entire circuit heat dissipation structure, solves and sent out in LCC compensation circuit
The serious problem of heat, improves the stability of LCC compensation circuit.
To achieve the above object, the technical solution of the utility model is as follows: a kind of wireless charging LCC compensation circuit, including
Wireless charging energy transmitting end LCC compensation circuit and receiving end LCC compensation circuit；The transmitting terminal LCC compensation circuit includes humorous
Shake inductance Lf1, resonant capacitance Cf1, compensating electric capacity Cp1With primary side transmitting coil L1；The receiving end LCC compensation circuit includes resonance
Inductance Lf2, resonant capacitance Cf2, compensating electric capacity Cp2With secondary side receiving coil L2；The resonant inductance Lf1And Lf2Structure is identical, is
Wireless charging high-frequency resonant inductance；The wireless charging high-frequency resonant inductance includes EE type magnetic core, insulating trip and circular coil, institute
Stating EE type magnetic core is that two E-type magnetic cores are opposite in opening and consistency from top to bottom is installed, and the circular coil is vertical structure, by
Inner coil and outer coil combination are wound on E-type magnetic core center pillar, and it is exhausted that the inner coil of the circular coil is wound on package
On the E-type magnetic core center pillar of edge paper, the outer coil is wound on the inner coil of package insulating paper, on the outer coil again
Wrap up one layer of insulating paper；The inner coil and outer coil are interlaced coiling on E-type magnetic core center pillar；The round wire
Circle is formed by big stock litz wire coiling, and whole package insulating paper forms insulating layer, the big dividend outside the big stock litz wire
Hereby line is twisted by 8-19 root shallow bid litz wire, and the shallow bid litz wire is twisted by 3-7 root enameled wire；The insulating trip
It is placed among E-type magnetic core opening face, generates air gap when fixed for magnetic core, adjust gas by adjusting the thickness of insulating trip
The size of gap.
Further, in the transmitting terminal LCC compensation circuit, compensating electric capacity Cp1With primary side transmitting coil L1After series connection with it is humorous
Shake capacitor Cf1Parallel connection, then with resonant inductance Lf1Series connection；In the receiving end LCC compensation circuit, compensating electric capacity Cp2It is received with secondary side
Coil L2After series connection with resonant capacitance Cf2Parallel connection, then with resonant inductance Lf2Series connection.
Further, the air gap between two E-type magnetic cores is 2-3mm.
Further, the wireless charging high-frequency resonant inductance working frequency is 75-100kHz.
Further, the wireless charging high-frequency resonant inductance sensibility reciprocal is 40-50uH.
A kind of radiator structure of wireless charging LCC compensation circuit, including LCC capacitor board, cooling fin, radiator, insulation pottery
Tile and two radiator fans；Wireless charging high-frequency resonant inductance connects composition LCC resonance electricity with LCC capacitor board by litz wire
Road, the cooling fin are wrapped on the outside of wireless charging high-frequency resonant inductance, cooling fin and wireless charging high-frequency resonant inductance it
Between fill heat conductive silica gel；The LCC capacitor board is rectangle circuit board, and there are peel off solder mask on the bottom surface layer of circuit board quadrangle
Copper foil, coat silicone grease in copper foil surface, 1-2 piece insulating ceramic film be installed, and fill silicone grease in insulating ceramics on piece, pass through spiral shell
Adjusting screw is by circuit board Corner Strapped on the cooling fin for being coated with silicone grease；Thermal conductive silicon is provided between the cooling fin and radiator
Cooling fin and radiator are fixed together by rouge by screw；Two radiator fans are individually positioned in radiator both ends, fan
Wind direction at air outlet it is identical.
Compared with prior art, the utility model at least has the advantages that the utility model by using special
The litz wire of coiling can be good at eliminating electric current kelvin effect caused by under high frequency magnetic field and kindred effect bring seriously handed over
Stream loss, can be effectively reduced transformer temperature rise；By the way that LCC compensation circuit is divided into LCC capacitor board and high-frequency resonant inductance two
Part individually heat dissipation, effectively improves heat dissipation effect, the temperature rise of circuit can be effectively reduced, between improving system long-time not
The stability of disconnected operation.
Detailed description of the invention
Fig. 1 is wireless charging LCC compensation circuit schematic diagram；
Fig. 2 is wireless charging high-frequency resonant inductance schematic diagram；
Fig. 3 is wireless charging high-frequency resonant inductance radiator structure scheme of installation；
Fig. 4 is wireless charging high-frequency resonant inductance and cooling fin scheme of installation；
Fig. 5 is LCC capacitor board heat dissipation scheme of installation.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
As shown in Figure 1, a kind of wireless charging LCC compensation circuit provided by the invention, including wireless charging energy transmitting end
LCC compensation circuit 1 and receiving end LCC compensation circuit 2；The transmitting terminal LCC compensation circuit 1 includes resonant inductance Lf1, resonance electricity
Hold Cf1, compensating electric capacity Cp1With primary side transmitting coil L1；The receiving end LCC compensation circuit 2 includes resonant inductance Lf2, resonance electricity
Hold Cf2, compensating electric capacity Cp2With secondary side receiving coil L2；In the transmitting terminal LCC compensation circuit 1, compensating electric capacity Cp1It is sent out with primary side
Ray circle L1After series connection with resonant capacitance Cf1Parallel connection, then with resonant inductance Lf1Series connection；In the receiving end LCC compensation circuit 2, mend
Repay capacitor Cp2With secondary side receiving coil L2After series connection with resonant capacitance Cf2Parallel connection, then with resonant inductance Lf2Series connection；LCC compensation electricity
Road need to meet following formula,
Wherein ω0For inverter working frequency, L1And L2For the sensibility reciprocal of transmitting coil and receiving coil, Cf1And Cf2Respectively
Transmitting terminal and receiving end parallel resonance capacitance, Cp1And Cp2Respectively transmitting terminal and receiving end series compensation capacitance value, Lf1And Lf2
For the sensibility reciprocal of transmitting terminal and receiving end resonance coil.
The resonant inductance Lf1And Lf2Structure is identical, is wireless charging high-frequency resonant inductance 3.As shown in Fig. 2, described
Wireless charging high-frequency resonant inductance 3 includes EE type magnetic core, insulating trip and circular coil 4, and the EE type magnetic core is two E-type magnetic cores
5 install in the opposite simultaneously consistency from top to bottom of opening, and the circular coil 4 is vertical structure, by inner coil and outer coil group
Conjunction is wound on E-type magnetic core center pillar, and the inner coil of the circular coil is wound on the E-type magnetic core center pillar of package insulating paper,
The outer coil is wound on the inner coil of package insulating paper, wraps up one layer of insulating paper on the outer coil again；It is described
Inner coil and outer coil are interlaced coiling on E-type magnetic core center pillar；The circular coil is by big stock litz wire coiling
It forms, whole package insulating paper forms insulating layer outside the big stock litz wire, and the big stock litz wire is by the small dividend of 8-19 root
Hereby line is twisted, and the shallow bid litz wire is twisted by 3-7 root enameled wire；The insulating trip is placed on E-type magnetic core opening
Among face, air gap 6 is generated when fixed for magnetic core, the size of air gap 6 is adjusted by adjusting the thickness of insulating trip；Two E
Air gap 6 between type magnetic core is 2-3mm；3 working frequency of wireless charging high-frequency resonant inductance is 75-100kHz, and sensibility reciprocal is
40-50uH。
As shown in figure 3, a kind of radiator structure of wireless charging LCC compensation circuit provided by the invention, including LCC capacitor board
7, cooling fin 8, radiator 9, insulating ceramic film 10 and two radiator fans 11；Wireless charging high-frequency resonant inductance 3 passes through Ritz
Line and the connection composition LCC resonance circuit of LCC capacitor board 7, as shown in figure 4, the cooling fin 8 is wrapped in wireless charging high-frequency resonant
3 outside of inductance, fills heat conductive silica gel 12 between cooling fin 8 and wireless charging high-frequency resonant inductance 3；As shown in figure 5, described
LCC capacitor board 7 is rectangle circuit board, and there are the copper foils for peelling off solder mask on the bottom surface layer of circuit board quadrangle, in copper foil surface
Silicone grease is coated, 1-2 piece insulating ceramic film 10 is installed, and fill silicone grease 14 on insulating ceramic film 10, it will be electric by screw 13
Road plate Corner Strapped is on the cooling fin 8 for being coated with silicone grease；It is provided with heat-conducting silicone grease between the cooling fin 8 and radiator 9, is passed through
Cooling fin and radiator are fixed together by screw；Two radiator fans 11 are individually positioned in 9 both ends of radiator, radiator fan
11 wind direction at air outlet is identical.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new
Scheme after type simple transformation belongs to the protection scope of the utility model.
Claims (6)
1. a kind of wireless charging LCC compensation circuit, which is characterized in that including wireless charging energy transmitting end LCC compensation circuit and
Receiving end LCC compensation circuit；The transmitting terminal LCC compensation circuit includes resonant inductance Lf1, resonant capacitance Cf1, compensating electric capacity Cp1
With primary side transmitting coil L1；The receiving end LCC compensation circuit includes resonant inductance Lf2, resonant capacitance Cf2, compensating electric capacity Cp2With
Secondary side receiving coil L2；The resonant inductance Lf1And Lf2Structure is identical, is wireless charging high-frequency resonant inductance；The wireless charging
Electric high-frequency resonant inductance includes EE type magnetic core, insulating trip and circular coil, and the EE type magnetic core is two E-type magnetic cores in opening phase
Simultaneously consistency from top to bottom is installed, the circular coil is vertical structure, is combined by inner coil and outer coil and is wound on E type
On magnetic core center pillar, the inner coil of the circular coil is wound on the E-type magnetic core center pillar of package insulating paper, the outer coil
It is wound on the inner coil of package insulating paper, wraps up one layer of insulating paper on the outer coil again；The inner coil and outer
Layer line circle is interlaced coiling on E-type magnetic core center pillar；The circular coil is formed by big stock litz wire coiling, the big stock
Whole package insulating paper forms insulating layer outside litz wire, and the big stock litz wire is twisted by 8-19 root shallow bid litz wire,
The shallow bid litz wire is twisted by 3-7 root enameled wire；The insulating trip is placed among E-type magnetic core opening face, is used for
Magnetic core generates air gap when fixed, and the size of air gap is adjusted by adjusting the thickness of insulating trip.
2. a kind of wireless charging LCC compensation circuit according to claim 1, which is characterized in that the transmitting terminal LCC compensation
In circuit, compensating electric capacity Cp1With primary side transmitting coil L1After series connection with resonant capacitance Cf1Parallel connection, then with resonant inductance Lf1Series connection；
In the receiving end LCC compensation circuit, compensating electric capacity Cp2With secondary side receiving coil L2After series connection with resonant capacitance Cf2Parallel connection, then with
Resonant inductance Lf2Series connection.
3. a kind of wireless charging LCC compensation circuit according to claim 1, which is characterized in that between two E-type magnetic cores
Air gap is 2-3mm.
4. a kind of wireless charging LCC compensation circuit according to claim 1, which is characterized in that the wireless charging high frequency
Resonant inductance working frequency is 75-100kHz.
5. a kind of wireless charging LCC compensation circuit according to claim 1, which is characterized in that the wireless charging high frequency
Resonant inductance sensibility reciprocal is 40-50uH.
6. a kind of radiator structure of any one of claim 1-5 wireless charging LCC compensation circuit, which is characterized in that including
LCC capacitor board, cooling fin, radiator, insulating ceramic film and two radiator fans；Wireless charging high-frequency resonant inductance passes through Ritz
Line connects composition LCC resonance circuit with LCC capacitor board, and the cooling fin is wrapped on the outside of wireless charging high-frequency resonant inductance,
Heat conductive silica gel is filled between cooling fin and wireless charging high-frequency resonant inductance；The LCC capacitor board is rectangle circuit board, circuit
There are the copper foils for peelling off solder mask on the bottom surface layer of plate quadrangle, coat silicone grease in copper foil surface, install 1-2 piece insulating ceramic film,
And fill silicone grease in insulating ceramics on piece, by screw by circuit board Corner Strapped on the cooling fin for being coated with silicone grease；It is described
It is provided with heat-conducting silicone grease between cooling fin and radiator, cooling fin and radiator are fixed together by screw；Two dissipate
Hot-air fan is individually positioned in radiator both ends, and the wind direction at air outlet of fan is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050145.2U CN208316418U (en) | 2018-07-03 | 2018-07-03 | A kind of wireless charging LCC compensation circuit and its radiator structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821050145.2U CN208316418U (en) | 2018-07-03 | 2018-07-03 | A kind of wireless charging LCC compensation circuit and its radiator structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208316418U true CN208316418U (en) | 2019-01-01 |
Family
ID=64717773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821050145.2U Active CN208316418U (en) | 2018-07-03 | 2018-07-03 | A kind of wireless charging LCC compensation circuit and its radiator structure |
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| CN (1) | CN208316418U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635573A (en) * | 2019-09-23 | 2019-12-31 | 重庆大学 | Sleeve pair-embedded electric field coupling mechanism and EC-WPT system formed by same |
| CN111404382A (en) * | 2019-05-21 | 2020-07-10 | 镁蓝科技(上海)有限公司 | Switching power supply circuit |
| CN111584220A (en) * | 2020-05-18 | 2020-08-25 | 华中科技大学 | High-power wireless charging magnetic coupling mechanism and electric energy transmission system thereof |
-
2018
- 2018-07-03 CN CN201821050145.2U patent/CN208316418U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404382A (en) * | 2019-05-21 | 2020-07-10 | 镁蓝科技(上海)有限公司 | Switching power supply circuit |
| CN110635573A (en) * | 2019-09-23 | 2019-12-31 | 重庆大学 | Sleeve pair-embedded electric field coupling mechanism and EC-WPT system formed by same |
| CN110635573B (en) * | 2019-09-23 | 2021-02-19 | 重庆大学 | Sleeve pair-embedded electric field coupling mechanism and EC-WPT system formed by same |
| CN111584220A (en) * | 2020-05-18 | 2020-08-25 | 华中科技大学 | High-power wireless charging magnetic coupling mechanism and electric energy transmission system thereof |
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