CN115246331A - Liftable wireless charging receiving module of electric automobile - Google Patents

Abstract

The invention discloses a liftable electric vehicle wireless charging and receiving module, comprising a lifting device arranged on the electric vehicle chassis, a wireless energy pickup device is arranged on the lifting device, and the wireless energy pickup device comprises a bottom case composed of a magnetic conductive material, The wireless energy pickup coil arranged in the bottom case, the magnetic core laid over the wireless energy pickup coil, the metal heat sink arranged above the magnetic core, the wireless energy pickup circuit arranged on the metal heat sink, and the case cover, the wireless energy The pickup coil is connected to the charging circuit of the electric vehicle through the wireless energy pickup circuit, and a water cooling channel is also arranged inside the metal heat sink, and the water cooling channel is connected to the water cooling system of the electric vehicle. The invention provides a liftable electric vehicle wireless charging receiving module, which can use a lifting device to adjust the distance between the wireless energy pickup device and the transmitting end during wireless charging, so that the electric vehicle charging is more efficient.

Description

Liftable electric vehicle wireless charging receiver module

technical field

The invention relates to wireless energy transmission technology, in particular to a liftable electric vehicle wireless charging receiving module.

Background technique

Energy is a sought-after treasure in today's rapidly developing society. The proportional relationship between energy consumption and economic development has become a common sense engraved into everyone's subconscious. However, with the explosive growth of my country's economy, energy consumption is even more rare. Vehicles using new energy sources have recently been paid more and more attention due to their environmental friendliness and wide range of energy sources. For vehicles using electricity as a power source, such as electric vehicles, a supporting battery and a charging device for the battery are needed to make it more widely popularized.

Currently known charging methods for electric vehicles include wired charging and wireless charging. Compared with wired charging, wireless charging does not require manual plugging of charging cables, so wireless charging has a wider application prospect. However, in the commercially available electric vehicles with wireless charging function, the wireless charging receiver is usually installed on the chassis of the electric vehicle. Since the height of the chassis of different models is not the same, when the chassis of the model is high, it is easy to affect the charging efficiency, resulting in practical Poor sex.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a liftable wireless charging receiving module for electric vehicles. During wireless charging, the lifting device can be used to adjust the distance between the wireless energy pick-up device and the transmitting end, so that the charging of electric vehicles is more efficient; During the transmission process, the electric vehicle water cooling system is used to cool the wireless energy pickup coil and the wireless energy pickup circuit to ensure the stable operation of the system, which is conducive to improving the efficiency of wireless energy transmission, thereby solving the technical problems described in the background technology.

In order to achieve the above object, the concrete technical scheme adopted in the present invention is as follows:

A liftable electric vehicle wireless charging receiving module, its key lies in: including a lifting device arranged on the chassis of the electric vehicle, the lifting device is provided with a wireless energy pickup device, and the wireless energy pickup device is composed of a magnetically conductive material The bottom shell, the wireless energy pick-up coil arranged in the bottom shell, the magnetic core laid above the wireless energy pick-up coil, the metal heat sink set above the magnetic core, set on the metal heat sink The wireless energy pick-up circuit, and the shell cover, the wireless energy pick-up coil is connected to the charging circuit of the electric vehicle through the wireless energy pick-up circuit, and a water-cooling channel is also provided inside the metal heat sink, and the water-cooling channel is connected to the In the water cooling system of electric vehicles.

Furthermore, the lifting device includes a top frame and a bottom frame, two sets of inner scissors and outer scissors hinged in X are arranged between the top frame and the bottom frame, and a useful In addition to the adjusting mechanism for adjusting the hinge angle of the inner scissors and the outer scissors, a mounting substrate of the wireless energy pick-up device is also arranged on the bottom frame.

Furthermore, the lower end of the inner scissors is hinged to the bottom frame, and its upper end is movably connected to the top frame through a first guide groove transversely opened on the top frame; the lower end of the outer scissors is passed through The second guide groove horizontally opened on the bottom frame is movably connected with the bottom frame, and its upper end is hinged with the top frame; a lead screw is also arranged on the top frame, and the lead screw is driven by a motor. And a movable piece is connected to the lead screw, and the movable piece is hinged to the upper end of the inner scissors.

Furthermore, the metal heat sink includes a metal shell, the lower surface of the metal shell is a plane and serves as a metal shielding plate, the water cooling channel in the metal shell is arranged in a detour, and its liquid inlet and outlet The liquid port is located on one side of the metal shell, and the metal shell on the same side as the liquid inlet is also provided with an energy transmission channel interface and a signal transmission channel interface.

Furthermore, the top frame is provided with a transfer liquid inlet, a transfer liquid outlet, a transfer energy transmission channel interface and a transfer signal transmission channel interface, and the transfer liquid inlet is connected to the transfer inlet through a transfer liquid inlet pipe. The transfer liquid outlet is connected to the liquid outlet through the transfer liquid outlet pipe, the transfer energy transmission channel interface is connected to the energy transmission channel interface through the transfer energy transmission circuit, and the transfer signal The transmission channel interface is connected to the signal transmission channel interface through a relay signal transmission circuit.

Furthermore, on the installation substrate, there are reserved through slots for the transfer liquid inlet pipe, the transfer liquid outlet pipe, the transfer energy transmission circuit, and the transfer signal transmission circuit to pass through. The liquid inlet pipe, the transfer liquid outlet pipe, the transfer energy transmission circuit and the transfer signal transmission circuit can be accommodated between the top frame and the bottom frame.

Furthermore, the water-cooling channel is provided with a first detour area, a second detour area and a third detour area corresponding to the positions of the diode, capacitor PCB board and power tube in the wireless energy pickup circuit in sequence, and the wireless energy The four diodes in the pickup circuit are closely attached to the metal shell corresponding to the first detour area, and the capacitor PCB board in the wireless energy pickup circuit is closely attached to the metal shell corresponding to the second detour area Above, a plurality of power tubes in the wireless energy pick-up circuit are closely attached to the metal casing corresponding to the second detour area.

Furthermore, the wireless energy pickup coil is a planar coil, and is wound on the bottom wall inside the bottom case; the magnetic core is formed by splicing a plurality of rectangular magnetic pieces along the same plane.

Furthermore, a first insulating and heat-conducting plate is arranged between the wireless energy pickup coil and the magnetic core; a second insulating and heat-conducting plate is also arranged between the magnetic core and the metal heat sink; the shell A cover insulating film is also provided between the cover and the wireless energy pick-up circuit.

Furthermore, a first connection seat is provided in the center of the bottom case, and a second connection seat that cooperates with the first connection seat is provided on the wireless energy pick-up circuit. . Both the second insulating and heat-conducting plate and the metal heat sink are provided with escape openings corresponding to the second connecting seat.

Notable effect of the present invention is:

1. During wireless charging of electric vehicles, the lifting device can be used to lower the height of the wireless energy pickup device to reduce the distance between the wireless energy pickup device and the transmitter, which can be used for various new energy vehicles, thereby making electric vehicle charging more efficient;

2. The scissor lifting device is composed of inner scissors and outer scissors, with compact structure and long stroke, which will not affect the daily driving of electric vehicles;

3. The coolant circulating in the water cooling system of the electric vehicle is introduced into the metal heat sink through the water cooling channel, so that the coolant takes away the heat of the wireless energy pickup coil and the wireless energy pickup circuit, and reduces the temperature of the circuit components to reduce energy loss. More efficient wireless power transmission;

4. By controlling the flow rate of the coolant in the water-cooling channel, the temperature of the circuit components can be controlled to ensure the stable operation of the pick-up device and avoid overloading it during high-power power transmission operations, thereby reducing the damage of circuit components such as breakdown, short circuit, and open circuit. The risk of accidents is beneficial to improve the service life of the device.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is the overall structure schematic diagram of embodiment one;

Fig. 2 is a schematic structural view of Embodiment 1 in a charging state;

Fig. 3 is a schematic structural view of Embodiment 1 in a storage state;

4 is a perspective view of the wireless energy pickup device in Embodiment 1;

FIG. 5 is an exploded view of the wireless energy pickup device in Embodiment 1;

Fig. 6 is a top view of the wireless energy pick-up device in Embodiment 1;

Fig. 7 is the sectional view on A-A direction in Fig. 6;

Fig. 8 is a distribution diagram of the transfer circuit and the transfer waterway on the top frame in Embodiment 1;

Fig. 9 is a schematic structural view of the lifting device in Embodiment 1;

Fig. 10 is a distribution diagram of each circuit device of the pick-up circuit on the water cooling channel in the first embodiment;

Marking in the figure: 10-chassis, 20-lifting device, 201-top frame, 202-bottom frame, 203-inner scissors, 204-outer scissors, 205-installation base plate, 206-first guide groove, 207-first Two guide grooves, 208-lead screw, 209-motor, 210-moving parts, 211-transfer liquid inlet, 212-transfer liquid outlet, 213-transfer energy transmission channel interface, 214-transition signal transmission channel interface, 215 -Transfer liquid inlet pipe, 216-Transfer liquid outlet pipe, 217-Transfer energy transmission circuit, 218-Transfer signal transmission circuit, 219-Through slot, 220-Protective cover, 30-Wireless energy pick-up device, 301-Bottom case, 302-wireless energy pickup coil, 303-magnetic core, 304-metal heat sink, 305-wireless energy pickup circuit, 306-shell cover, 307-bottom shell, 308-water cooling channel, 309-diode, 310-power tube, 311 -capacitor PCB, 312-liquid inlet, 313-liquid outlet, 314-rectangular magnetic sheet, 315-first insulating heat conducting plate, 316-second insulating heat conducting plate, 317-cover insulation film, 318-first connection Seat, 319-second connection seat, 320-breathing valve, 321-energy transmission channel interface, 322-signal transmission channel interface.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In describing the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, in the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

1 to 7 show a first embodiment of the present invention: a liftable electric vehicle wireless charging receiving module, including a lifting device 20 arranged on the chassis 10 of the electric vehicle, and the lifting device 20 is provided with A wireless energy pick-up device 30, the wireless energy pick-up device 30 includes a bottom shell 301 made of a magnetically permeable material, a wireless energy pick-up coil 302 arranged in the bottom shell 301, a magnetic coil 302 laid above the wireless energy pick-up coil 302 Core 303, a metal heat sink 304 arranged above the magnetic core 303, a wireless energy pickup circuit 305 arranged on the metal heat sink 304, and a case cover 306, the wireless energy pickup circuit 305 and the wireless energy The pickup coil 302 is electrically connected, and a water cooling channel 308 is disposed inside the metal heat sink 304 .

As shown in Fig. 8 and Fig. 9, during specific implementation, in order to minimize the space occupied by the hoisting device 20 after storage and avoid its influence on the daily driving of the electric vehicle, the hoisting device 20 includes a top frame 201 and a bottom frame 202. Two sets of inner scissors 203 and outer scissors 204 are arranged between the top frame 201 and the bottom frame 202, and two sets of inner scissors 203 and outer scissors 204 are arranged on the top frame 201 for adjusting the inner scissors 203 and the outer scissors. The adjustment mechanism for the hinge angle of the scissors 204 is also provided with a mounting substrate 305 of the wireless energy pick-up device 30 on the bottom frame 202 . As a priority, the lower end of the inner scissors 203 is hinged to the bottom frame 202, and its upper end is movably connected to the top frame 201 through a first guide groove 206 transversely opened on the top frame; the outer scissors The lower end of 204 is movably connected with the bottom frame 202 of 207 through the second guide groove opened transversely on the bottom frame 202, and its upper end is hinged with the top frame 201; a lead screw is also arranged on the top frame 201 208 , the lead screw 208 is driven by a motor 209 , and a movable part 210 is connected to the lead screw 208 , and the movable part 210 is hinged to the upper end of the inner scissors 203 .

As can be seen from Figure 10, in order to ensure the directional transmission of wireless energy, the metal heat sink 304 includes a metal shell, the lower surface of the metal shell is a plane and serves as a metal shielding plate; In order to obtain a better heat dissipation and cooling effect, the water cooling channel 308 in the metal shell adopts a circuitous arrangement, and its liquid inlet 312 and liquid outlet 313 are located on one side of the metal shell. In order to make it easier for the operator to arrange waterways and circuits, an energy transmission channel interface 321 and a signal transmission channel interface 322 are also provided on the metal shell on the same side as the liquid inlet (see FIG. 6 for details).

As shown in Figure 8, in order to prevent the lifting device 20 from interfering with the waterway and the circuit during the lifting action, the top frame is provided with a transfer liquid inlet 211, a transfer liquid outlet 212, a transfer energy transmission channel interface 213 and The transfer signal transmission channel interface 214, the transfer liquid inlet 213 is connected to the liquid inlet 312 through the transfer liquid inlet pipe 215, and the transfer liquid outlet 212 is connected to the liquid outlet through the transfer liquid outlet pipe 216 313, the transfer energy transmission channel interface 213 is connected to the energy transmission channel interface 321 through the transfer energy transmission circuit 217, and the transfer signal transmission channel interface 214 is connected to the signal transmission channel interface 322 through the transfer signal transmission circuit 218 . Specifically, in order to avoid the exposure of waterways and circuits and reduce the risk of damage, there are reserved on the installation substrate for the transfer liquid inlet pipe 215, the transfer liquid outlet pipe 216, and the transfer energy transmission circuit 217. , the through-slot through which the transfer signal transmission circuit 218 passes, the transfer liquid inlet pipe 215, the transfer liquid outlet pipe 216, the transfer energy transmission circuit 217 and the transfer signal transmission circuit 218 can be accommodated in the between the top frame 201 and the bottom frame 202 . Preferably, in order to avoid interference with waterways and electric circuits when the lead screw 208 rotates, a protective cover is correspondingly provided on the lead screw 208 .

It can be seen from FIG. 10 that the water-cooling channel 308 is provided with a first detour area, a second detour area and a third detour area according to the positions of the diode 309, the capacitor PCB311 board, and the power tube 310 in the wireless energy pickup circuit 305. In the detour area, the four diodes 309 in the wireless energy pick-up circuit 305 are closely attached to the metal shell corresponding to the first detour area, and the capacitor PCB311 board in the wireless energy pick-up circuit 305 is attached to the On the metal casing corresponding to the second detour area, the multiple power tubes 310 in the wireless energy pick-up circuit 305 are closely attached to the metal casing corresponding to the second detour area. Further, the metal casing protrudes upwards to form a side edge 321 matching with the side wall of the bottom case 1 , and the case cover 306 is disposed on the side edge 321 . Specifically, a first positioning hole is opened on the cover 306, a second positioning hole is opened on the side 321 of the metal shell, and a third positioning hole is opened on the side wall of the bottom case 301. holes, and the shell cover 306, the metal shell and the bottom shell 301 are fixed by bolts. Preferably, in order to better adapt to the protrusions of the electrical components in the wireless energy pick-up circuit 305 , a groove 322 is adaptively provided on the upper surface of the metal housing.

It can be seen from FIG. 5 and FIG. 7 that in order to increase the heat dissipation area of the wireless energy pickup coil 302 and improve the heat dissipation effect, the wireless energy pickup coil 302 is a planar coil and is wound on the bottom wall inside the bottom case 301 superior. Similarly, in order to adapt the magnetism to the size of the wireless energy pick-up coil 302 to increase the power while improving the heat conduction effect, the magnetic core 303 is formed by splicing a plurality of rectangular magnetic pieces 314 along the same plane.

As shown in FIG. 6 , in order to avoid excessive pressure in the device caused by heat accumulation in the device, a vent valve 320 is also provided on the shell wall of the bottom shell 301 .

It can be seen from FIG. 5 that in a specific application scenario, a first insulating and heat-conducting plate 315 is disposed between the wireless energy pickup coil 302 and the magnetic core 303 . A second insulating and heat-conducting plate 316 is also provided between the magnetic core 303 and the metal heat sink 304 . The first insulating heat-conducting plate 315 and the second insulating heat-conducting plate 316 made of heat-conducting insulating materials can prevent the wireless energy transmission coil and components around the wireless energy transmission circuit from being electrified on the one hand, thereby reducing potential safety hazards; The first insulating and heat conducting plate 315 and the second insulating and heat conducting plate 316 are transferred to the metal heat sink 304, and then the heat is taken away by the cooling liquid circulating in the water cooling channel 308, so as to achieve the technical effect of efficiently cooling the circuit components. Preferably, in order to prevent the case cover 306 from being charged, a cover insulating film 317 is further provided between the wireless energy pick-up circuit 305 and the case cover 306 . Preferably, in order to facilitate the assembly of various components, a first connection seat 318 is provided in the center of the bottom case 301, and a second connection seat 319 that cooperates with the first connection seat 318 is provided on the wireless energy pick-up circuit 305. The first insulating and heat-conducting plate 315 , the magnetic core 303 , the second insulating and heat-conducting plate 316 , and the metal heat sink 304 are all provided with escape openings corresponding to the second connecting seat 319 . Specifically, an energy transmission channel interface and a signal transmission channel interface are also provided on the metal heat sink.

In summary, when electric vehicles are wirelessly charged, the lifting device 20 can be used to lower the height of the wireless energy pick-up device 30 to reduce the distance between the wireless energy pick-up device 30 and the transmitter, which can be used for various new energy vehicles, so that the electric vehicle The charging is more efficient; the inner scissors 203 and the outer scissors 204 are used to form a scissor lifting device, which has a compact structure and a long stroke, which will not affect the daily driving of the electric vehicle; the coolant circulated in the water cooling system of the electric vehicle passes through the water cooling channel 308 is introduced into the metal heat sink 304, so that the cooling liquid takes away the heat of the wireless energy pickup coil 302 and the wireless energy pickup circuit 305, lowers the temperature of the circuit components to reduce energy loss, and makes the wireless energy transmission more efficient. By controlling the flow rate of the coolant in the water-cooling channel 308, the temperature of the circuit device can be controlled to ensure the stable operation of the pick-up device and avoid overloading it when performing high-power electric energy transmission operations, thereby reducing circuit device breakdown, short circuit, open circuit and other destructive accidents risk, which is conducive to improving the service life of the device.

Finally, it should be noted that the above-disclosed technical solution is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand that all or all of the above-mentioned embodiments can be realized. Part of the process and the equivalent changes made according to the claims of the present invention still belong to the scope covered by the invention.

Claims (10)

1. The utility model provides a liftable formula electric automobile wireless receiving module that charges which characterized in that: including setting up the elevating gear on electric automobile chassis, the last wireless energy pickup apparatus that is provided with of elevating gear, wireless energy pickup apparatus includes the drain pan that magnetic conductive material constitutes, set up in wireless energy pickup coil in the drain pan lays the magnetic core of wireless energy pickup coil top, set up in the metal heat dissipation part of magnetic core top, set up in wireless energy pickup circuit on the metal heat dissipation part to and the cap, wireless energy pickup coil passes through in the charging circuit that wireless energy pickup circuit inserted electric automobile the inside of metal heat dissipation part still is provided with the water-cooling passageway, the water-cooling passageway inserts in electric automobile's the water cooling system.

2. The liftable wireless receiving module that charges of formula electric automobile of claim 1, characterized in that: elevating gear includes top frame and underframe, the top frame with be provided with two sets ofly between the underframe and be X articulated interior scissor and outer scissor still be provided with on the top frame and be used for adjusting interior scissor with the adjustment mechanism of outer scissor hinge angle still be provided with on the underframe wireless energy pickup device's mounting substrate.

3. The liftable wireless receiving module that charges of formula electric automobile of claim 2, characterized in that: the lower end of the inner scissor fork is hinged with the bottom frame, and the upper end of the inner scissor fork is movably connected with the top frame through a first guide groove transversely formed in the top frame; the lower end of the outer scissor is movably connected with the bottom frame through a second guide groove transversely formed in the bottom frame, and the upper end of the outer scissor is hinged with the top frame; the top frame is further provided with a lead screw, the lead screw is driven by a motor and is connected with a moving part, and the moving part is hinged with the upper end of the inner scissor fork.

4. The liftable wireless receiving module that charges of formula electric automobile of claim 3, characterized in that: the metal heat sink comprises a metal shell, the lower surface of the metal shell is a plane and serves as a metal shielding plate, a water cooling channel in the metal shell is arranged in a circulating mode, a liquid inlet and a liquid outlet of the metal shell are located on one side of the metal shell, and an energy transmission channel interface and a signal transmission channel interface are further arranged on the metal shell on the same side of the liquid inlet.

5. The liftable wireless receiving module that charges of formula electric automobile of claim 4, characterized in that: be provided with transfer inlet, transfer liquid outlet, transfer energy transmission channel interface and transfer signal transmission channel interface on the top frame, the transfer inlet through the transfer feed liquor pipe with the inlet is connected, the transfer liquid outlet through the transfer drain pipe with the liquid outlet is connected, transfer energy transmission channel interface through the transfer energy transmission circuit with energy transmission channel interface connects, transfer signal transmission channel interface through the transfer signal transmission circuit with signal transmission channel interface connects.

6. The liftable wireless receiving module that charges of formula electric automobile of claim 5, characterized in that: the installation substrate is provided with a through groove for the transfer liquid inlet pipe, the transfer liquid outlet pipe, the transfer energy transmission circuit and the transfer signal transmission circuit to penetrate through, and the transfer liquid inlet pipe, the transfer liquid outlet pipe, the transfer energy transmission circuit and the transfer signal transmission circuit can be accommodated between the top frame and the bottom frame.

7. The liftable wireless charging receiving module of electric automobile of any of claims 4 to 6, characterized in that: the water cooling channel is provided with a first circuitous area, a second circuitous area and a third circuitous area in sequence according to the positions of diodes, a capacitor PCB and power tubes in the wireless energy pickup circuit, four diodes in the wireless energy pickup circuit are tightly attached to a metal shell corresponding to the first circuitous area, the capacitor PCB in the wireless energy pickup circuit is tightly attached to a metal shell corresponding to the second circuitous area, and a plurality of power tubes in the wireless energy pickup circuit are tightly attached to a metal shell corresponding to the second circuitous area.

8. The liftable wireless charging receiving module of electric automobile of any of claims 1 to 6, characterized in that: the wireless energy pickup coil is a planar coil and is wound on the bottom wall inside the bottom shell; the magnetic core is formed by splicing a plurality of rectangular magnetic sheets along the same plane.

9. The liftable wireless receiving module that charges of formula electric automobile of claim 8, characterized in that: a first insulating heat-conducting plate is arranged between the wireless energy pickup coil and the magnetic core; a second insulating heat-conducting plate is arranged between the magnetic core and the metal heat-radiating piece; and a cover plate insulating film is also arranged between the shell cover and the wireless energy pickup circuit.

10. The liftable wireless charging receiving module for an electric vehicle of claim 9, wherein a first connecting seat is disposed at the center of the bottom casing, a second connecting seat cooperating with the first connecting seat is disposed on the wireless energy picking circuit, and avoiding openings are disposed on the first insulating heat-conducting plate, the magnetic core, the second insulating heat-conducting plate and the metal heat sink corresponding to the second connecting seat.

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