CN114523859B - Wireless vehicle-mounted charger - Google Patents
Wireless vehicle-mounted charger Download PDFInfo
- Publication number
- CN114523859B CN114523859B CN202111630893.4A CN202111630893A CN114523859B CN 114523859 B CN114523859 B CN 114523859B CN 202111630893 A CN202111630893 A CN 202111630893A CN 114523859 B CN114523859 B CN 114523859B
- Authority
- CN
- China
- Prior art keywords
- circuit board
- mounted charger
- power circuit
- vehicle
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000001816 cooling Methods 0.000 claims abstract description 35
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 17
- 239000000110 cooling liquid Substances 0.000 claims abstract description 9
- 239000000565 sealant Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000005674 electromagnetic induction Effects 0.000 claims description 6
- 230000005669 field effect Effects 0.000 claims description 6
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 2
- 230000000241 respiratory effect Effects 0.000 claims 1
- 239000000306 component Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 230000029058 respiratory gaseous exchange Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to the technical field of wireless charging systems, in particular to a wireless vehicle-mounted charger, which comprises: a wire slot is arranged in the coil tray; the litz coil is placed in the wire slot; a positioning circuit board is fastened on the wire slot and is positioned above the litz coil; the ferrite cores are respectively spaced apart and arranged on the upper surface of the positioning circuit board; the liquid cooling aluminum shell subassembly is positioned above the ferrite magnetic core and comprises a runner cavity filled with cooling liquid; the power circuit board is attached to the upper surface of the liquid cooling aluminum shell sub-assembly; the connector wire harness is placed on the upper surface of the liquid cooling aluminum shell sub-assembly and is connected with the port of the power circuit board. The wireless vehicle-mounted charger provided by the invention has the advantages that the number of the adopted sub-parts is small, the whole machine is light, meanwhile, the hydraulic loss caused by the liquid cooling aluminum shell sub-assembly is effectively limited, the cooling liquid dissipates heat faster and the heat balance steady-state temperature is lower under the same pressure condition.
Description
Technical Field
The invention relates to the technical field of wireless charging systems, in particular to a wireless vehicle-mounted charger.
Background
With the popularization of new energy automobiles, the new energy automobiles have been developed to 15% of market share, and the pure electric automobiles also commonly adopt 7kW vehicle-mounted chargers (OBCs) and national power grids to complete energy transmission and conversion. Compared with the existing plug-in charging pile, charging gun and vehicle-mounted charger (OBC), the wireless vehicle-mounted charger (WOBC) has the advantages of wide consensus and application popularization in advance, simplicity, reliability and safety, and promotes safer, more convenient and more happy traveling of human beings. Under the large environmental background of the policy of carbon neutralization to be promoted and the energy storage transfer of the electric automobile in China, the wireless vehicle-mounted charger (WOBC) with the advantages of small number of sub-parts, light weight of the whole machine, smaller installation space of the whole machine, high energy density of the whole machine, 900V improvement of the output voltage of the whole machine and 11kW improvement of the output power of the whole machine at least is urgently needed.
The existing wireless vehicle-mounted charger (WOBC) on the market has no integral whole machine mass production (SOP) solution with the mass energy density not less than 0.88W/g@900V and the volume energy density not less than 1.56 kW/L@900V. Particularly, the local maximum thickness of the existing wireless vehicle-mounted charger (WOBC) on the market is generally 60mm or even 75mm or more in the Z direction (height direction) of the whole vehicle, so that the novel chassis and power assembly core components (gearbox, speed reducer, differential mechanism, motor, driving motor, pump, high-voltage battery pack and battery management system, direct-current power converter, power distribution unit, high-voltage integrated wiring harness and the like) of the whole vehicle are extremely difficult to be laid out by an OEM (OEM), and the safety problem that the cross-country or SUV electric vehicle is popularized to a car or a sports car electric vehicle by using a platform of the wireless vehicle-mounted charger (WOBC) is extremely difficult to be effectively solved. The problems are even more prominent as a core technical barrier for the popularization of wireless vehicle-mounted chargers (WOBC) for electric automobile platform application (a sliding plate type chassis and a power assembly which are nearly flattened due to insufficient Z-direction thickness space of a whole automobile become a new chassis of a main stream new energy automobile), so that the popularization of low-carbon, low-cost and large-batch wireless charging electric automobiles to the national and time development of thousands of families is severely restricted.
Disclosure of Invention
The invention aims to provide a wireless vehicle-mounted charger which has high-energy density layout and reliable thermal management balance, and can enable an industrial practitioner to realize the wireless vehicle-mounted charger which has the advantages of less number of sub-parts, light weight of the whole machine, smaller installation space of the whole machine and high energy density of the whole machine and can reach 11 kW@900V. The maximum thickness of the whole vehicle in the Z direction (height direction) of the whole vehicle can be 49mm, so that the safety problem that the platform of the wireless vehicle-mounted charger applied to the cross-country or SUV electric vehicle is popularized to the car or sports car electric vehicle is effectively solved, and the energy density of the wireless vehicle-mounted charger is improved integrally.
In order to achieve the above object, the present invention provides a wireless vehicle-mounted charger, which is applied to a vehicle, and comprises:
a coil tray, wherein a wire slot is arranged in the coil tray;
the litz coil is placed in the wire groove, the height of the wire groove is larger than the outer diameter of the litz coil, and the litz coil is used for carrying out electromagnetic induction with a primary coil of a ground device to obtain alternating current;
the positioning circuit board is fastened on the wire slot and is positioned above the litz coil, the positioning circuit board is not contacted with the litz coil, and the positioning circuit board is used for positioning with the ground device through electromagnetic induction;
a plurality of ferrite cores, each of which is spaced apart from the other, and is arranged on the upper surface of the positioning circuit board through a heat-conducting double-sided adhesive tape and pressed, wherein the ferrite cores are used for providing a magnetic circuit for the litz coil and a primary coil of a ground device;
the liquid cooling aluminum shell subassembly is positioned above the ferrite magnetic core, comprises a runner cavity filled with cooling liquid, and is used for heat management balance of the wireless vehicle-mounted charger;
the power circuit board is attached to the upper surface of the liquid cooling aluminum shell sub-assembly and is used for converting the alternating current induced by the litz coil into direct current to be output and realizing low-voltage signal control;
and the connector wire harness is placed on the upper surface of the liquid cooling aluminum shell sub-assembly and is connected with a port on the power circuit board, and is used for realizing communication between the power circuit board and the vehicle and outputting current to the vehicle.
Further, a square groove is further formed in the coil tray, and the square groove is arranged around the wire groove;
the wireless vehicle-mounted charger further comprises a WiFi module, and the WiFi module is flatly paved and attached in the square groove.
Further, a circle of sealant is coated on the upper end face of the coil tray, the coil tray is fastened on the lower surface of the liquid cooling aluminum shell sub-assembly by adopting screws, and a sealing cavity is formed between the coil tray and the lower surface of the liquid cooling aluminum shell sub-assembly.
Further, the liquid cooling aluminum shell subassembly is provided with a small hole, the small hole deviates from the runner cavity and penetrates through the upper surface and the lower surface of the liquid cooling aluminum shell subassembly, pouring sealant is poured into the sealing cavity through the small hole, and the sealing cavity is filled with the pouring sealant.
Furthermore, the lower surface of the power circuit board comprises a resonant inductor and a filtering magnetic ring which is limited by winding flexibility of the resonant inductor, and the resonant inductor and the filtering magnetic ring are staggered to be distributed in a projection area right above the litz coil.
Further, the power circuit board comprises a diode and a field effect tube, and the diode and the field effect tube are closely attached to the upper surface of the flow channel cavity.
Further, the connector harness comprises a low-voltage signal connector harness and a high-voltage direct-current output connector harness;
the low-voltage signal connector wire harness is connected with a port of a low-voltage control area of the power circuit board and is used for realizing communication between the power circuit board and the vehicle and controlling high-voltage power output;
the high-voltage direct-current output connector wire harness is connected with a port of the high-voltage direct-current output area of the power circuit board and used for enabling the power circuit board to output high-voltage direct current to the vehicle.
Further, the wireless vehicle-mounted charger further comprises an upper cover, wherein the upper cover is attached to the upper surface of the liquid cooling aluminum shell sub-assembly through a circle of sealant, and the upper cover is fastened on the liquid cooling aluminum shell sub-assembly through screws and covers the power circuit board and the connector wire harness.
Further, the wireless vehicle-mounted charger further comprises a breathing plug, wherein the breathing plug is arranged in the clamping groove of the upper cover or in the clamping groove of the side wall of the liquid cooling aluminum shell subassembly.
Further, the length of the wireless vehicle-mounted charger is smaller than or equal to 416mm, the width is smaller than or equal to 372mm, and the thickness is smaller than or equal to 49mm.
The wireless vehicle-mounted charger provided by the invention has the advantages that the number of the adopted sub-parts is small, the whole machine is light, the smaller installation space of the whole machine is realized, and the energy density of the wireless vehicle-mounted charger is improved as a whole. And effectively restrict the hydraulic loss that liquid cooling aluminum hull subassembly leads to, adopt shorter coolant liquid runner, less static cooling liquid volume demand (less specific heat capacity demand, lighter weight), lower coolant liquid pressure drop (less demand to whole car pump output pressure), coolant liquid heat dissipation is faster, the steady state temperature of thermal balance is lower under the equal pressure condition.
Drawings
FIG. 1 is a top view of a wireless vehicle-mounted charger according to a preferred embodiment of the present invention;
FIG. 2 is a partial cutaway view of a wireless onboard charger in accordance with a preferred embodiment of the present invention;
FIG. 3 is a bottom view of a wireless car charger according to a preferred embodiment of the present invention;
FIG. 4 is a bottom perspective view of a wireless car charger according to a preferred embodiment of the present invention;
FIG. 5 is a right side view of the wireless vehicle charger according to the preferred embodiment of the present invention;
fig. 6 is an isometric view of a wireless vehicle-mounted charger in accordance with a preferred embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
The invention is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
In a preferred embodiment of the present invention, the wireless vehicle-mounted charger provided by the present invention is applied to a vehicle, has high energy density and thermal management balance, and as shown in fig. 1 to 6, comprises:
the coil tray 1 is provided with a wire slot;
the litz coil 2 is arranged in a wire groove, the height of the wire groove is larger than the outer diameter of the litz coil 2, and the litz coil 2 is used for carrying out electromagnetic induction with a primary coil of a ground device to obtain high-frequency high-voltage alternating current;
the positioning circuit board 3 is fastened on the wire slot and is positioned above the litz coil 2, the positioning circuit board 3 is not contacted with the litz coil 2, and the positioning circuit board 3 is used for positioning with the ground device through electromagnetic induction;
a plurality of ferrite cores 4, each ferrite core 4 is respectively spaced apart, and is arranged on the upper surface of the positioning circuit board 3 through a heat-conducting double-sided adhesive tape and is pressed, and the ferrite cores 4 are used for providing a magnetic circuit for the litz coil 2 and a primary coil of a ground device;
the liquid cooling aluminum shell sub-assembly 5 is positioned above the ferrite magnetic core 4, the liquid cooling aluminum shell sub-assembly 5 comprises a runner cavity 8 filled with cooling liquid, and the liquid cooling aluminum shell sub-assembly 5 is used for heat management balance of the wireless vehicle-mounted charger;
the power circuit board 6 is attached to the upper surface of the liquid cooling aluminum shell subassembly 5 and is used for converting high-frequency high-voltage alternating current induced by the litz coil 2 into high-voltage direct current to be output and realizing low-voltage signal control;
and the connector wire harness 7 is arranged on the upper surface of the liquid cooling aluminum shell subassembly 5 and is connected with a port on the power circuit board 6, and is used for realizing the communication between the power circuit board 6 and the vehicle and outputting current to the vehicle.
Specifically, in the present embodiment, the ferrite cores 4 are respectively spaced apart in advance with plastic spacer bars, and the ferrite cores 4 are respectively spaced apart by being placed on the upper surface of the positioning circuit board 3 (heat conductive double sided tape has been previously stuck) and pressed, and then the plastic spacer bars are removed.
In this embodiment, the entire vehicle has no sub-component for compressing the litz coil 2 in the Z direction (height direction), and the thickness in this direction is saved.
In this embodiment, the whole vehicle has no sub-component for pressing the ferrite core 4 in the Z direction (height direction), but the ferrite core 4 and the positioning circuit board 3 are directly bonded by the heat conductive double sided tape, so that the thickness in the Z direction is saved.
In a preferred embodiment of the present invention, as shown in fig. 3 and 4, a square groove is further provided in the coil tray, and the square groove is disposed around the wire groove;
the wireless vehicle-mounted charger further comprises a WiFi module, and the WiFi module is tiled and attached in the square groove.
Specifically, in this embodiment, a circle of sealant is coated on the upper end surface of the coil tray 1, and the coil tray 1 is fastened on the lower surface of the liquid cooling aluminum shell subassembly 5 by using screws, so as to form a sealed cavity 10 with the lower surface of the liquid cooling aluminum shell subassembly 5.
In this embodiment, the liquid cooling aluminum housing subassembly 5 is provided with a small hole, the small hole deviates from the runner cavity 8 and penetrates through the upper surface and the lower surface of the liquid cooling aluminum housing subassembly 5, and pouring sealant is poured into the sealing cavity 10 through the small hole to fill the sealing cavity 10.
In this embodiment, the sealed cavity 10 formed by the coil tray 1 and the liquid-cooled aluminum housing subassembly 5 is vacuum-encapsulated with polyurethane at one time. This provides protection and damping against mechanical shock, crushed stone shock, random vibration and temperature shock, and even heat transfer to the flow channel cavity 8 of the liquid cooled aluminum housing subassembly 5, greatly improving its reliability and thermal management balancing capability.
In this embodiment, the wireless vehicle-mounted charger further includes an upper cover 11, the upper cover 11 is attached to the upper surface of the liquid cooling aluminum housing subassembly 5 through a circle of sealant, the upper cover 11 is fastened on the liquid cooling aluminum housing subassembly 5 by adopting a screw, a cavity covering the power circuit board 6 and the connector harness 7 is formed, and the cavity can be regarded as an upper cavity of the wireless vehicle-mounted charger.
In this embodiment, the wireless vehicle-mounted charger further comprises a breathing plug 12, and the breathing plug 12 is installed in a clamping groove of the upper cover 11 or in a clamping groove of the side wall of the liquid cooling aluminum shell subassembly 5.
In this embodiment, the sealed cavity 10 may be regarded as a lower cavity of the wireless vehicle-mounted charger, and includes the litz coil 2, the positioning circuit board 3 and the ferrite core 4.
In this embodiment, the runner cavity 8 of the liquid cooling aluminum housing subassembly 5 includes a cooling liquid inlet and a cooling liquid outlet, and the runner cavity 8 can be regarded as a middle cavity part of the wireless vehicle-mounted charger for heat dissipation management balance of an upper cavity and a lower cavity of the wireless vehicle-mounted charger.
In the preferred embodiment of the invention, the lower surface of the power circuit board 6 comprises a resonant inductor connected by solder or soft copper interference press fit and a filtering magnetic ring flexibly limited by the winding of the resonant inductor, and the resonant inductor and the filtering magnetic ring are staggered to be distributed in a projection area right above the litz coil 2.
Specifically, in this embodiment, the projection area directly above the litz coil 2 in the Z direction (height direction) of the whole vehicle is not provided with a sub-part for pressing and positioning the circuit board 3, but the projection area is fastened by a circle of screws outside the projection area, so that the thickness in the direction is saved.
Specifically, in the present embodiment, the power circuit board 6 includes a diode and a field effect transistor, and the diode and the field effect transistor are closely attached to the upper surface of the flow channel cavity 8.
In the preferred embodiment of the invention, the connector harness 7 includes a low voltage signal connector harness 13 and a high voltage dc output connector harness 14; the low-voltage signal connector wire harness 13 is connected with a port of a low-voltage control area of the power circuit board 6 and is used for realizing the communication between the power circuit board 6 and a vehicle and controlling high-voltage power output; the high voltage dc output connector harness 14 is connected to a port of the high voltage dc output region of the power circuit board 6 for realizing that the power circuit board 6 outputs high voltage dc to the vehicle.
Specifically, in this embodiment, the power circuit board 6 further includes other electronic components with a height of 2mm-19mm, which are also distributed on the lower surface of the power circuit board 6, and the electronic components in the power circuit board 6 are entirely suspended above the runner cavity 8 of the liquid cooling aluminum shell subassembly 5, so that the Z-directional height of the whole vehicle of the power circuit board 6 in the upper cavity of the liquid cooling aluminum shell subassembly 5 is sufficiently reduced, the effective area of the tiled components of the power circuit board 6 is also fully expanded, and the high-voltage direct current output area and the low-voltage control area are also fully isolated to ensure insulation and insulation, and the high-frequency high-voltage alternating current electromagnetic is effectively isolated to avoid interference with low-voltage signals.
In the embodiment, the wireless vehicle-mounted charger has the effects of being smaller than or equal to 416mm in length, being smaller than or equal to 372mm in width, being smaller than or equal to 49mm in thickness (Z direction of the whole vehicle), 12.3kg in mass, 800V in output voltage and 11kW in output power.
In summary, the wireless vehicle-mounted charger provided by the invention effectively solves the core technical barrier of the electric vehicle platform application and popularization of the wireless vehicle-mounted charger (WOBC) (the Z-direction thickness space of the whole vehicle is insufficient and the flattened slide plate type chassis and power assembly become the new chassis of the main stream new energy automobile), and particularly solves the safety problem of the electric vehicle such as the car or the sports car (serious challenges such as collision of the whole vehicle, mechanical impact, random vibration, broken stone impact, high Wen Demian heat radiation and the like) of the electric vehicle such as the off-road or SUV electric vehicle.
Simpler and reliable thermal management balancing solution: less static cooling liquid volume requirements (lighter weight), less overall vehicle pump output pressure requirements, faster reaching of thermal equilibrium, lower thermal equilibrium steady-state temperatures, runner low carbon manufacturing feasibility advantages, rapid mass production and low cost controllable advantages.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, and it will be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A wireless vehicle-mounted charger for a vehicle, comprising:
a coil tray, wherein a wire slot is arranged in the coil tray;
the litz coil is placed in the wire groove, the height of the wire groove is larger than the outer diameter of the litz coil, and the litz coil is used for carrying out electromagnetic induction with a primary coil of a ground device to obtain alternating current;
the positioning circuit board is fastened on the wire slot and is positioned above the litz coil, the positioning circuit board is not contacted with the litz coil, and the positioning circuit board is used for positioning with the ground device through electromagnetic induction;
a plurality of ferrite cores, each of which is spaced apart from the other, and is arranged on the upper surface of the positioning circuit board through a heat-conducting double-sided adhesive tape and pressed, wherein the ferrite cores are used for providing a magnetic circuit for the litz coil and a primary coil of a ground device;
the liquid cooling aluminum shell subassembly is positioned above the ferrite magnetic core, comprises a runner cavity filled with cooling liquid, and is used for heat management balance of the wireless vehicle-mounted charger;
the power circuit board is attached to the upper surface of the liquid cooling aluminum shell sub-assembly and is used for converting the alternating current induced by the litz coil into direct current to be output and realizing low-voltage signal control;
the connector wire harness is placed on the upper surface of the liquid cooling aluminum shell subassembly and connected with a port on the power circuit board, and is used for realizing communication between the power circuit board and the vehicle and outputting current to the vehicle;
the power circuit board also comprises other electronic components with the height of 2mm-19mm, and the electronic components are distributed on the lower surface of the power circuit board, so that the whole power circuit board is suspended above the flow channel cavity.
2. The wireless vehicle-mounted charger of claim 1, wherein a square groove is further arranged in the coil tray, and the square groove is arranged around the wire groove;
the wireless vehicle-mounted charger further comprises a WiFi module, and the WiFi module is flatly paved and attached in the square groove.
3. The wireless vehicle-mounted charger of claim 1, wherein a circle of sealant is coated on the upper end surface of the coil tray, and the coil tray is fastened on the lower surface of the liquid cooling aluminum shell subassembly by adopting a screw to form a sealed cavity with the lower surface of the liquid cooling aluminum shell subassembly.
4. The wireless vehicle-mounted charger of claim 3, wherein the liquid-cooled aluminum housing subassembly is provided with a small hole, the small hole deviates from the runner cavity and penetrates through the upper surface and the lower surface of the liquid-cooled aluminum housing subassembly, and pouring sealant is poured into the sealing cavity through the small hole to fill the sealing cavity.
5. The wireless vehicle-mounted charger of claim 1, wherein the lower surface of the power circuit board comprises a resonant inductor and a filter magnetic ring flexibly limited by windings of the resonant inductor, and the resonant inductor and the filter magnetic ring are staggered in a projection area distribution right above the litz coil.
6. The wireless vehicle-mounted charger of claim 1, wherein the power circuit board comprises a diode and a field effect tube, the diode and the field effect tube being closely attached to the upper surface of the flow channel cavity.
7. The wireless vehicle-mounted charger of claim 1 wherein the connector harness comprises a low voltage signal connector harness and a high voltage dc output connector harness;
the low-voltage signal connector wire harness is connected with a port of a low-voltage control area of the power circuit board and is used for realizing communication between the power circuit board and the vehicle and controlling high-voltage power output;
the high-voltage direct-current output connector wire harness is connected with a port of the high-voltage direct-current output area of the power circuit board and used for enabling the power circuit board to output high-voltage direct current to the vehicle.
8. The wireless vehicle-mounted charger of claim 1, further comprising an upper cover attached to the upper surface of the liquid-cooled aluminum housing subassembly by a ring of sealant, wherein the upper cover is fastened to the liquid-cooled aluminum housing subassembly by screws and covers the power circuit board and the connector harness.
9. The wireless vehicle-mounted charger of claim 8, further comprising a respiratory plug mounted in a clamping groove of the upper cover or in a clamping groove of a side wall of the liquid-cooled aluminum housing subassembly.
10. The wireless vehicle-mounted charger of claim 1, wherein the wireless vehicle-mounted charger has a length of 416mm or less, a width of 372mm or less, and a thickness of 49mm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630893.4A CN114523859B (en) | 2021-12-28 | 2021-12-28 | Wireless vehicle-mounted charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630893.4A CN114523859B (en) | 2021-12-28 | 2021-12-28 | Wireless vehicle-mounted charger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114523859A CN114523859A (en) | 2022-05-24 |
| CN114523859B true CN114523859B (en) | 2024-02-06 |
Family
ID=81619965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111630893.4A Active CN114523859B (en) | 2021-12-28 | 2021-12-28 | Wireless vehicle-mounted charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114523859B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204204611U (en) * | 2013-09-05 | 2015-03-11 | 西门子公司 | Coil layout, energy electrically driven vehicles and charging station |
| CN206264803U (en) * | 2016-11-24 | 2017-06-20 | 重庆唐古拉科技有限公司 | Automobile wireless charging positioner |
| CN207753504U (en) * | 2017-11-27 | 2018-08-21 | 浙江万安亿创电子科技有限公司 | The vehicle-mounted secondary coil of wireless charging |
| CN109546719A (en) * | 2019-01-18 | 2019-03-29 | 浙江万安亿创电子科技有限公司 | Wireless charging vehicle-mounted charging device |
| CN111049232A (en) * | 2020-01-06 | 2020-04-21 | 哈尔滨理工大学 | Vehicle-mounted wireless charger with high stability |
| CN112977104A (en) * | 2021-04-25 | 2021-06-18 | 南京国信能源有限公司 | Conduction transformer type charger and electric automobile |
| CN214755751U (en) * | 2021-05-10 | 2021-11-16 | 广东宝齐科技有限公司 | Left-right touch type automatic telescopic vehicle-mounted wireless charging device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9533589B2 (en) * | 2013-07-16 | 2017-01-03 | Qualcomm Incorporated | Integration of electronic components in inductive power transfer systems |
| US10186912B2 (en) * | 2013-09-13 | 2019-01-22 | Qualcomm Incorporated | Pickup coil design for tight spaces and asymmetrical coupling |
| US10858097B2 (en) * | 2016-02-22 | 2020-12-08 | WiBotic Inc. | Detection and navigation in wireless charging |
-
2021
- 2021-12-28 CN CN202111630893.4A patent/CN114523859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204204611U (en) * | 2013-09-05 | 2015-03-11 | 西门子公司 | Coil layout, energy electrically driven vehicles and charging station |
| CN206264803U (en) * | 2016-11-24 | 2017-06-20 | 重庆唐古拉科技有限公司 | Automobile wireless charging positioner |
| CN207753504U (en) * | 2017-11-27 | 2018-08-21 | 浙江万安亿创电子科技有限公司 | The vehicle-mounted secondary coil of wireless charging |
| CN109546719A (en) * | 2019-01-18 | 2019-03-29 | 浙江万安亿创电子科技有限公司 | Wireless charging vehicle-mounted charging device |
| CN111049232A (en) * | 2020-01-06 | 2020-04-21 | 哈尔滨理工大学 | Vehicle-mounted wireless charger with high stability |
| CN112977104A (en) * | 2021-04-25 | 2021-06-18 | 南京国信能源有限公司 | Conduction transformer type charger and electric automobile |
| CN214755751U (en) * | 2021-05-10 | 2021-11-16 | 广东宝齐科技有限公司 | Left-right touch type automatic telescopic vehicle-mounted wireless charging device |
Non-Patent Citations (1)
| Title |
|---|
| 邢凯鹏.工程科技Ⅱ辑，针对电动汽车的非接触式充电系统及其充电机技术的研究.2020,C042-2118. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114523859A (en) | 2022-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106915264B (en) | On-board charger for electric vehicle | |
| EP3163986B1 (en) | Power conversion device | |
| EP3163990B1 (en) | Power conversion device | |
| EP2876984B1 (en) | Power conversion device and method for assembling the same | |
| EP3163991B1 (en) | Power conversion device | |
| JP2955541B2 (en) | Oil-cooled high power induction charging coupler | |
| US20170338023A1 (en) | Wireless Charging Pad Having Coolant Assembly | |
| CN104769689A (en) | Reactor, converter, and power conversion device | |
| CN110525240B (en) | Vehicle-mounted power battery, chargeable and dischargeable energy storage system and electric automobile | |
| CN101552351A (en) | Battery module, electric storage device and electric system | |
| CN114523859B (en) | Wireless vehicle-mounted charger | |
| US11872901B1 (en) | Charging electric vehicles using DC-to-DC converters with immersion-cooled inductors | |
| CN112440705B (en) | Power assembly | |
| WO2017136788A1 (en) | Inverter assembly | |
| CN114664530A (en) | Charging and power receiving coil structure and preparation method | |
| JP7324084B2 (en) | Receiving equipment and transmitting equipment | |
| CN210168381U (en) | High-voltage accessory device and electric vehicle | |
| CN107809172B (en) | Power supply conversion device | |
| CN218004561U (en) | Charging and receiving coil | |
| CN219108091U (en) | Motor controller and vehicle | |
| KR20210021386A (en) | Devices for energy distribution and/or energy conversion in hybrid or electric vehicles | |
| CN113038752B (en) | Magnetic element module and vehicle-mounted charger | |
| CN210000098U (en) | electric vehicle and driving system thereof | |
| JP7324083B2 (en) | Receiving equipment and transmitting equipment | |
| CN219842876U (en) | Connecting device and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 311305, Building 1, 101, 201, 301, Binhe Wealth Factory, No. 88 Binhe Road, Qingshanhu Street, Lin'an District, Hangzhou City, Zhejiang Province (self declared) Patentee after: Yichuang Zhilian (Zhejiang) Electronic Technology Co.,Ltd. Country or region after: China Address before: Floor 2, building 1, No. 211, Chuanda Road, Pudong New Area, Shanghai, 201200 Patentee before: Shanghai Wanji Electronic Technology Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |