Automobile wireless charger

Abstract

The utility model discloses an automobile wireless charger, which relates to the technical field of quick charging and comprises a ground transmitting device and a vehicle bottom receiving device. The ground transmitting device comprises a positioning base, a lifting air bag, a cooling water tank, a first ferrite, a transmitting coil, a top cover and a heat dissipation pipeline; the lifting air bag drives the cooling water tank to lift; the first ferrite is integrally formed on the upper side surface of the cooling water tank, the top cover is fixedly mounted on the first ferrite in a covering manner, and the transmitting coil is hermetically mounted between the first ferrite and the top cover; the heat dissipation pipeline is fixedly installed in the positioning base, a plurality of first heat dissipation holes are evenly formed in the upper side of the heat dissipation pipeline, and the heat dissipation pipeline is connected with an air inlet pipeline and a water inlet pipeline; compared with the prior art, the wireless charging device can be suitable for new energy automobiles with different chassis heights, ensures that various automobile types can be wirelessly charged in a medium-low temperature environment, can be switched to a flushing state for cooling and fire extinguishing when a fault occurs, and is high in safety.

Description

Technical Field

[0001] This utility model relates to the field of fast charging technology, and in particular to a wireless charger for automobiles. Background Technology

[0002] New energy vehicles refer to automobiles that use unconventional vehicle fuels as their power source (or use conventional vehicle fuels but adopt new on-board power devices), integrating advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include four major types: hybrid electric vehicles (HEV), battery electric vehicles (BEV, including solar-powered vehicles), fuel cell electric vehicles (FCEV), and other new energy vehicles (such as supercapacitors, flywheels, and other high-efficiency energy storage devices). Unconventional vehicle fuels refer to fuels other than gasoline, diesel, natural gas (NG), liquefied petroleum gas (LPG), ethanol gasoline (EG), methanol, and dimethyl ether.

[0003] In new energy vehicles, ternary lithium batteries are the most common power source, with a range of approximately 300-400 kilometers. When the battery is depleted, it needs to be recharged at a charging station before it can be used again. Currently, most new energy vehicles are charged by connecting cables, which is inconvenient and prone to short circuits due to improper connection. Wireless charging technology is becoming increasingly mature, making it necessary to apply it to new energy vehicles. However, due to factors such as the high charging power of vehicles, different vehicle chassis, and high charging temperatures, there is no commercially available wireless charging technology for new energy vehicles on the market.

[0004] A prior art technology (publication number: CN111332148B, publication date: 2021.12.03) discloses a wireless charging device for new energy vehicles. This device allows for adjustment of the wireless charger's height according to different vehicles, adapting to various chassis heights and increasing the device's applicability and charging efficiency. However, this technical solution does not consider heat dissipation; if the device overheats, the charging power needs to be reduced, resulting in low charging efficiency.

[0005] In the prior art (Announcement No.: CN117261641B, Announcement Date: 2024.01.23), a wireless charging device for new energy vehicles is also disclosed. It dissipates heat through a combination of air cooling and water cooling, and the heat dissipation power can be flexibly adjusted according to the heat generation. However, this solution cannot be applied to vehicles with different chassis heights. In addition, neither this design nor other prior art has considered the possibility of the vehicle catching fire due to overheating during charging. When new energy vehicles catch fire, they are often completely burned, leaving only the frame, which can cause significant economic losses to the car owner. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model provides a technical solution that can solve the above problems.

[0007] A wireless charger for cars includes a ground transmitter and a vehicle-mounted receiver, wherein the vehicle-mounted receiver and the ground transmitter are arranged vertically to each other.

[0008] The ground-based launching device includes a positioning base, a lifting airbag, a cooling water tank, a first ferrite, a launching coil, a top cover, and heat dissipation pipes;

[0009] The lifting airbag is fixedly installed in the positioning base, and the cooling water tank is fixedly installed above the lifting airbag. The lifting airbag drives the cooling water tank to move up and down.

[0010] The first ferrite is integrally formed and disposed on the upper surface of the cooling water tank, the top cover is covered and fixed on the first ferrite, and the transmitting coil is sealed and installed between the first ferrite and the top cover.

[0011] The heat dissipation pipe is fixedly installed in the positioning base and surrounds the outer periphery of the lifting airbag. Several first heat dissipation holes are evenly arranged on the upper side of the heat dissipation pipe. An air inlet pipe and a water inlet pipe are connected to the heat dissipation pipe, and electric valves are installed on both the air inlet pipe and the water inlet pipe.

[0012] Furthermore: the ground launching device also includes one or more grounding mechanisms, each of which includes a bottom positioning block, a hinge, a grounding shaft, and a spring;

[0013] A protective cover is slidably installed on one side of the positioning base, and the protective cover slides to one side of the positioning base and covers one or more grounding mechanisms.

[0014] The bottom positioning block is fixedly installed on the positioning base, the hinge is fixedly installed on the bottom positioning block, one end of the grounding shaft is rotatably installed in the hinge, and the spring is abutted between the grounding shaft and the bottom positioning block.

[0015] Furthermore: one or more push tubes are formed on the side of the heat dissipation pipe near the protective cover. The push tubes are connected to the heat dissipation pipe. A push piston is slidably installed inside the push tube. A push rod is fixedly installed on the push piston. The outer end of the push rod drives the protective cover to move outward.

[0016] Furthermore, the top side of the positioning base is formed with a plurality of second heat dissipation holes, which are arranged around the outer edge of the first ferrite, and the heat dissipation pipe outputs through the first heat dissipation holes and the second heat dissipation holes.

[0017] Furthermore, the positioning base has a trapezoidal cross-section that is narrower at the top and wider at the bottom, and the heat dissipation pipes are arranged within the trapezoidal structure of the positioning base.

[0018] Furthermore, a temperature sensor and a first position sensor are also sealed and installed between the first ferrite and the top cover.

[0019] Furthermore, a metal detector is also sealed between the first ferrite and the top cover.

[0020] Furthermore: the undercarriage receiving device includes a fixing plate, an undercarriage water tank, a second ferrite, a receiving coil, a second position sensor, and a bottom cover;

[0021] Several screw mounting holes are formed on both sides of the outer side of the fixing plate;

[0022] The under-vehicle water tank is fixedly installed on the bottom side of the fixed plate, the second ferrite is fixedly installed on the bottom side of the under-vehicle water tank, the bottom cover is fixedly installed to cover the bottom side of the second ferrite, and the receiving coil and the second position sensor are sealed between the second ferrite and the bottom cover.

[0023] The second position sensor and the first position sensor are arranged vertically to correspond to each other, and the receiving coil and the transmitting coil are arranged vertically to correspond to each other.

[0024] Furthermore: both the cooling water tank and the under-vehicle water tank are filled with coolant, and the sides of the cooling water tank and the under-vehicle water tank are respectively connected to water inlets and water outlets.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] 1. Fix the undercarriage receiver to the chassis of the new energy vehicle and connect the wires. When the undercarriage receiver is close to the ground transmitter, it can charge the battery of the new energy vehicle. The ground transmitter is directly installed at the parking space on the ground. When charging is needed, drive the vehicle to the corresponding parking space. The lifting airbag will raise the coolant tank. The first ferrite and the transmitting coil installed on the coolant tank will also rise accordingly, bringing the transmitting coil close to the receiving coil in the undercarriage receiver to realize power transmission. It can be applied to new energy vehicles with different chassis heights and improves the efficiency of wireless charging.

[0027] 2. The cooling water tank can dissipate heat from the transmitting coil during operation to prevent it from overheating and being damaged. During wireless charging, high-pressure gas can also be introduced into the cooling pipe through the air intake pipe. The high-pressure gas can be blown to the chassis of the vehicle through several first heat dissipation holes on the upper side of the cooling pipe for heat dissipation, thereby removing the heat generated by the new energy vehicle during wireless charging.

[0028] 3. When the temperature is detected to be too high and cannot be reduced by decreasing the power of the transmitting coil, it is determined that the wireless charging has malfunctioned. At this time, the air intake pipe is closed by using an electric valve, and the water intake pipe is opened by another electric valve. Water can enter the heat dissipation pipe and then be sprayed onto the bottom of the vehicle through several first heat dissipation holes, thereby achieving water spraying and cooling. This can effectively suppress the occurrence of fire or quickly extinguish fire if it starts.

[0029] 4. The transmitting coil in the ground transmitter and the receiving coil in the vehicle-mounted receiver are both sealed to effectively prevent water leakage. This ensures that the ground transmitter and the vehicle-mounted receiver will not leak electricity when flushed, thus guaranteeing their service life.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0034] Figure 3 This is a schematic diagram of the exploded structure of the receiving device under the vehicle;

[0035] Figure 4 This is a schematic diagram of the exploded structure of a ground-based launcher;

[0036] Figure 5 yes Figure 4 A magnified structural diagram at point A;

[0037] Figure 6 yes Figure 4 A magnified structural diagram at point B;

[0038] Figure 7 yes Figure 4 A magnified structural diagram at point C;

[0039] Figure 8 This is a schematic diagram of the exploded structure from another perspective of the ground-based launch device;

[0040] Figure 9 yes Figure 8 A magnified structural diagram at point D;

[0041] Figure 10 yes Figure 8 Enlarged structural diagram at point E.

[0042] The diagram shows: 1. Ground transmitter; 1.1. Positioning base; 1.2. Lifting airbag; 1.3. Cooling water tank; 1.4. First ferrite; 1.5. Transmitting coil; 1.6. Top cover; 1.7. Heat dissipation pipe; 2. Under-vehicle receiver; 2.1. Fixing plate; 2.2. Under-vehicle water tank; 2.3. Second ferrite; 2.4. Receiving coil; 2.5. Second position sensor; 2.6. Bottom cover; 3. First heat dissipation hole; 4. Air inlet pipe; 5. Water inlet pipe; 6. Electric valve; 7. Grounding mechanism; 7.1. Bottom positioning block; 7.2. Hinge; 7.3. Grounding shaft; 7.4. Spring; 8. Protective cover; 9. Push tube; 10. Push piston; 11. Push rod; 12. Second heat dissipation hole; 13. Temperature sensor; 14. First position sensor; 15. Metal detector; 16. Screw mounting hole; 17. Water inlet; 18. Water outlet. Detailed Implementation

[0043] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0044] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0045] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0046] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] like Figure 1-10 As shown, a wireless car charger of the present invention includes a ground transmitter 1 and a vehicle under receiver 2, wherein the vehicle under receiver 2 and the ground transmitter 1 are arranged vertically to each other.

[0049] The ground-based launching device 1 includes a positioning base 1.1, a lifting airbag 1.2, a cooling water tank 1.3, a first ferrite 1.4, a launching coil 1.5, a top cover 1.6, and a heat dissipation pipe 1.7;

[0050] The lifting airbag 1.2 is fixedly installed in the positioning base 1.1, and the cooling water tank 1.3 is fixedly installed above the lifting airbag 1.2. The lifting airbag 1.2 drives the cooling water tank 1.3 to move up and down.

[0051] The first ferrite 1.4 is integrally formed and disposed on the upper surface of the cooling water tank 1.3, and the top cover 1.6 is covered and fixed on the first ferrite 1.4. The transmitting coil 1.5 is sealed and installed between the first ferrite 1.4 and the top cover 1.6.

[0052] The heat dissipation pipe 1.7 is fixedly installed in the positioning base 1.1. The heat dissipation pipe 1.7 surrounds the outer periphery of the lifting airbag 1.2. The upper side of the heat dissipation pipe 1.7 is formed with a number of evenly arranged first heat dissipation holes 3. The heat dissipation pipe 1.7 is connected to an air inlet pipe 4 and a water inlet pipe 5. Both the air inlet pipe 4 and the water inlet pipe 5 are equipped with electric valves 6.

[0053] The principle is as follows: The under-vehicle receiver 2 is fixed to the chassis of the new energy vehicle and connected to the wires. When the under-vehicle receiver 2 is close to the ground transmitter 1, it can charge the battery of the new energy vehicle. The ground transmitter 1 is directly installed at the parking space on the ground. When charging is needed, the vehicle is driven to the corresponding parking space, and the lifting airbag 1.2 drives the cooling water tank 1.3 to rise. The first ferrite 1.4 and the transmitting coil 1.5 installed on the cooling water tank 1.3 will also rise accordingly, bringing the transmitting coil 1.5 close to the receiving coil 2.4 inside the under-vehicle receiver 2 to achieve power transmission. The cooling water tank 1.3 can dissipate heat for the transmitting coil 1.5 during operation, preventing it from overheating and being damaged. During wireless charging, high-pressure gas can also be introduced into the cooling pipe 1.7 through the air intake pipe 4. The high-pressure gas can pass through several first ferrites on the upper side of the cooling pipe 1.7. One heat dissipation hole 3 blows air to the chassis of the vehicle for heat dissipation, thereby removing the heat generated by the new energy vehicle during wireless charging. If the temperature is detected to be too high and cannot be reduced by decreasing the power of the transmitting coil 1.5, it is determined that the wireless charging has malfunctioned. At this time, the air intake pipe 4 is closed by the electric valve 6, and the water intake pipe 5 is opened by another electric valve 6. Water can enter the heat dissipation pipe 1.7 and then be sprayed onto the bottom of the vehicle through several first heat dissipation holes 3, thereby achieving water spraying and cooling. This can effectively suppress the occurrence of fire or quickly extinguish fires. The transmitting coil 1.5 in the ground transmitting device 1 and the receiving coil 2.4 in the vehicle bottom receiving device 2 are sealed to achieve effective waterproofing. When water is sprayed, the ground transmitting device 1 and the vehicle bottom receiving device 2 will not leak electricity, thus ensuring their service life.

[0054] Furthermore, the ground-based launching device 1 also includes one or more grounding mechanisms 7, each grounding mechanism 7 comprising a bottom positioning block 7.1, a hinge 7.2, a grounding shaft 7.3, and a spring 7.4;

[0055] A protective cover 8 is slidably installed on one side of the positioning base 1.1. After sliding towards one side of the positioning base 1.1, the protective cover 8 covers one or more grounding mechanisms 7.

[0056] The bottom positioning block 7.1 is fixedly installed on the positioning base 1.1, the hinge 7.2 is fixedly installed on the bottom positioning block 7.1, one end of the grounding shaft 7.3 is rotatably installed in the hinge 7.2, and the spring 7.4 is abutted between the grounding shaft 7.3 and the bottom positioning block 7.1;

[0057] The principle is as follows: when the protective cover 8 is pushed open, the spring 7.4 will elastically return to its original state, thereby causing the grounding shaft 7.3 to rotate upward 90° around the hinge 7.2. Since the grounding shaft 7.3 is grounded, after the grounding shaft 7.3 rotates upward 90°, its end can abut against the chassis of the vehicle, thereby discharging the vehicle and preventing the residual electricity in the vehicle from aggravating the overheating situation, thus preventing the whole vehicle from burning out and reducing economic losses.

[0058] Furthermore: the heat dissipation pipe 1.7 has one or more push tubes 9 formed on the side near the protective cover 8. The push tubes 9 are interconnected with the heat dissipation pipe 1.7. A push piston 10 is slidably installed inside the push tube 9. A push rod 11 is fixedly installed on the push piston 10. The outer end of the push rod 11 drives the protective cover 8 to move outward. Since the water pressure is greater than the air pressure, the push piston 10 can be opened when water is flowing. The push piston 10 can push the protective cover 8 outward through the push rod 11, thereby realizing the automatic opening of the protective cover 8 when water is flowing, realizing the automatic grounding connection of the vehicle, realizing timely discharge, and effectively suppressing the occurrence of fire.

[0059] Furthermore, the top side of the positioning base 1.1 is formed with a plurality of second heat dissipation holes 12, which are arranged around the outer edge of the first ferrite 1.4. The heat dissipation pipe 1.7 outputs through the first heat dissipation hole 3 and the second heat dissipation hole 12; high-pressure gas or high-pressure liquid can be sprayed onto the bottom of the vehicle for cooling, thereby achieving rapid cooling and fire extinguishing.

[0060] Furthermore: the cross-section of the positioning base 1.1 is a trapezoidal structure that is narrower at the top and wider at the bottom, and the heat dissipation pipe 1.7 is arranged in the trapezoidal structure of the positioning base 1.1; air pressure and hydraulic pressure can be pressurized through the inclined surface of the side wall of the trapezoidal structure, thereby spraying out gas and liquid at higher pressure to achieve rapid cooling and fire extinguishing.

[0061] Furthermore, a temperature sensor 13 and a first position sensor 14 are also sealed and installed between the first ferrite 1.4 and the top cover 1.6; the first position sensor 14 can be used to sense the parking position of the vehicle, thereby determining that it is in an accurate alignment state without charging, so as to achieve fast charging.

[0062] Furthermore, a metal detector 15 is also sealed between the first ferrite 1.4 and the top cover 1.6; the metal detector 15 can be used to detect whether there are other metal foreign objects blocking the way.

[0063] Furthermore: the undercarriage receiving device 2 includes a fixing plate 2.1, an undercarriage water tank 2.2, a second ferrite 2.3, a receiving coil 2.4, a second position sensor 2.5, and a bottom cover 2.6;

[0064] The fixing plate 2.1 has several screw mounting holes 16 formed on both sides of its outer side;

[0065] The undercarriage water tank 2.2 is fixedly installed on the bottom side of the fixing plate 2.1, the second ferrite 2.3 is fixedly installed on the bottom side of the undercarriage water tank 2.2, the bottom cover 2.6 is fixedly installed covering the bottom side of the second ferrite 2.3, and the receiving coil 2.4 and the second position sensor 2.5 are sealed between the second ferrite 2.3 and the bottom cover 2.6.

[0066] The second position sensor 2.5 and the first position sensor 14 are arranged vertically to correspond to each other, and the receiving coil 2.4 and the transmitting coil 1.5 are arranged vertically to correspond to each other.

[0067] The principle is as follows: when the vehicle is driven to the corresponding position, the second position sensor 2.5 will move exactly above the first position sensor 14, thereby achieving precise alignment for wireless charging. When the receiving coil 2.4 is offset within 70mm in any direction (front, back, left, right), it can still stably receive the power transmission from the transmitting coil 1.5. During wireless charging, the transmitting coil 1.5 can quickly dissipate heat through the cooling water tank 1.3 and the first ferrite 1.4, while the receiving coil 2.4 can quickly dissipate heat through the under-vehicle water tank 2.2 and the second ferrite 2.3. The ferrite has hot spots with high thermal conductivity, allowing the heat from the transmitting coil 1.5 and the receiving coil 2.4 to be quickly transferred to the water tank. Then, by circulating water to the water tank for cooling, the heat is quickly removed.

[0068] Furthermore, both the cooling water tank 1.3 and the under-vehicle water tank 2.2 are filled with coolant, and the sides of the cooling water tank 1.3 and the under-vehicle water tank 2.2 are respectively connected to an inlet 17 and an outlet 18. The coolant in the tank can achieve rapid water cooling through the inlet 17 and the outlet 18, which can quickly remove the heat generated during operation, thereby keeping the wireless charging device charged at a medium and low temperature. In the event of a malfunction that causes the temperature to be too high, it can also switch to a water flushing mode to achieve faster cooling. At the same time, the water flushing action can also effectively suppress the occurrence of fire.

[0069] This embodiment does not impose any limitation on the shape, material, structure, etc. of this utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A wireless car charger, comprising a ground transmitter and a vehicle-mounted receiver, wherein the vehicle-mounted receiver and the ground transmitter are arranged vertically opposite to each other; characterized in that: The ground-based launching device includes a positioning base, a lifting airbag, a cooling water tank, a first ferrite, a launching coil, a top cover, and heat dissipation pipes; The lifting airbag is fixedly installed in the positioning base, and the cooling water tank is fixedly installed above the lifting airbag. The lifting airbag drives the cooling water tank to move up and down. The first ferrite is integrally formed and disposed on the upper surface of the cooling water tank, the top cover is covered and fixed on the first ferrite, and the transmitting coil is sealed and installed between the first ferrite and the top cover. The heat dissipation pipe is fixedly installed in the positioning base and surrounds the outer periphery of the lifting airbag. Several first heat dissipation holes are evenly arranged on the upper side of the heat dissipation pipe. An air inlet pipe and a water inlet pipe are connected to the heat dissipation pipe, and electric valves are installed on both the air inlet pipe and the water inlet pipe.

2. The wireless car charger according to claim 1, characterized in that: The ground-based launching device also includes one or more grounding mechanisms, each of which includes a bottom positioning block, a hinge, a grounding shaft, and a spring. A protective cover is slidably installed on one side of the positioning base, and the protective cover slides to one side of the positioning base and covers one or more grounding mechanisms. The bottom positioning block is fixedly installed on the positioning base, the hinge is fixedly installed on the bottom positioning block, one end of the grounding shaft is rotatably installed in the hinge, and the spring is abutted between the grounding shaft and the bottom positioning block.

3. A wireless car charger according to claim 2, characterized in that: The heat dissipation pipe has one or more push tubes formed on the side near the protective cover. The push tubes are connected to the heat dissipation pipe. A push piston is slidably installed inside the push tube. A push rod is fixedly installed on the push piston. The outer end of the push rod drives the protective cover to move outward.

4. A wireless car charger according to claim 1, characterized in that: The top side of the positioning base is formed with multiple second heat dissipation holes, which are arranged around the outer edge of the first ferrite. The heat dissipation pipe outputs heat through the first and second heat dissipation holes.

5. A wireless car charger according to any one of claims 1 or 4, characterized in that: The positioning base has a trapezoidal cross-section that is narrower at the top and wider at the bottom, and the heat dissipation pipes are arranged within the trapezoidal structure of the positioning base.

6. A wireless car charger according to claim 1, characterized in that: A temperature sensor and a first position sensor are also sealed and installed between the first ferrite and the top cover.

7. A wireless car charger according to any one of claims 1 or 6, characterized in that: A metal detector is also sealed between the first ferrite and the top cover.

8. A wireless car charger according to any one of claims 1 or 6, characterized in that: The undercarriage receiving device includes a fixing plate, an undercarriage water tank, a second ferrite, a receiving coil, a second position sensor, and a bottom cover; Several screw mounting holes are formed on both sides of the outer side of the fixing plate; The under-vehicle water tank is fixedly installed on the bottom side of the fixed plate, the second ferrite is fixedly installed on the bottom side of the under-vehicle water tank, the bottom cover is fixedly installed to cover the bottom side of the second ferrite, and the receiving coil and the second position sensor are sealed between the second ferrite and the bottom cover. The second position sensor and the first position sensor are arranged vertically to correspond to each other, and the receiving coil and the transmitting coil are arranged vertically to correspond to each other.

9. A wireless car charger according to claim 8, characterized in that: Both the cooling water tank and the under-vehicle water tank are filled with coolant, and the sides of the cooling water tank and the under-vehicle water tank are respectively connected to water inlets and water outlets.

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