CN219246500U - Electric energy sensor and transmitting device for wireless charging - Google Patents

Abstract

The utility model belongs to the technical field of wireless charging, and particularly relates to an electric energy sensor and a transmitting device for wireless charging, which comprise a shell, wherein an induction coil is arranged in the shell, and a magnetic sheet is arranged at the rear side of the induction coil; the induction coil comprises a base layer coil and a layer-adding coil, wherein the number of turns of the layer-adding coil is smaller than that of the base layer coil; the base layer coil and the build-up layer coil are connected in series, and the winding directions are the same; a boss is arranged on the inner side of the shell, the front end of the boss is connected with the shell, the rear end of the boss is positioned in the middle of the inner ring of the induction coil, and the peripheral shape of the boss is matched with the shape of the inner ring of the induction coil; the technical scheme of the utility model reduces the occupied area of the wireless charging device under the condition of ensuring the same wireless charging power, is beneficial to the standardization of the winding of the induction coil, has a heat dissipation effect, avoids the influence of heating on the wireless charging efficiency, and can continuously and stably work.

Description

Electric energy sensor and transmitting device for wireless charging

Technical Field

The utility model belongs to the technical field of wireless charging, and particularly relates to an electric energy sensor and a transmitting device for wireless charging.

Background

The wireless charging technology becomes an emerging electric energy transmission technology, and is widely applied to various charging scenes, such as unmanned aerial vehicle, mobile phone, automobile, AGV and the like. The contactless wireless charging technology mainly uses receiving and transmitting coils to transmit electric energy through magnetic field coupling to achieve the purpose of wireless charging, so that the structure and winding links of the coils are particularly important, and whether the working state of the coils in the wireless charging process is optimal or not and the heat dissipation problem are affected.

In the high-power wireless charging application scene, whether factors such as the volume, the size of the wireless charging device and the like are convenient to install, the problems such as the power transmission efficiency and the like need to be comprehensively considered, and the technical problems such as large occupied area, unstable transmission efficiency, serious heating and the like of the wireless charging device exist at present.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides an electric energy sensor and a transmitting device for wireless charging, and aims to solve the technical problems of large occupied area, unstable wireless charging and serious heating.

The utility model provides an electric energy sensor for wireless charging, which comprises a shell, wherein an induction coil is arranged in the shell, and a magnetic sheet is arranged at the rear side of the induction coil; the induction coil comprises a base layer coil and a layer-adding coil, wherein the number of turns of the layer-adding coil is smaller than that of the base layer coil; the base layer coil and the build-up layer coil are connected in series, and the winding directions are the same; the inner side of the shell is provided with a boss, the front end of the boss is connected with the shell, the rear end of the boss is positioned in the middle of the inner ring of the induction coil, and the peripheral shape of the boss is matched with the shape of the inner ring of the induction coil.

Optionally, the thickness of the boss is a, and the thickness of the induction coil is b; the a is greater than one half of the b and less than or equal to the b.

Optionally, the device further comprises an insulating positioning component, wherein a sleeve opening is formed in the middle of the insulating positioning component, the outer side edge of the insulating positioning component is inwards recessed to form a litz wire inlet, and the sleeve opening is communicated with the litz wire inlet; the insulation positioning component is positioned in the inner ring of the layer-adding coil and positioned at the rear side of the base layer coil; the insulation positioning component is sleeved at the rear end of the boss through the sleeve opening, the end part of the inner ring of the base layer coil extends upwards to pass through the litz wire inlet, and the layer-adding coil is formed by winding the periphery of the insulation positioning component.

Optionally, a first insulating partition plate is arranged between the base layer coil and the build-up layer coil, a through hole and a notch are formed in the first insulating plate, the first insulating partition plate is sleeved on the boss through the through hole, and the front side of the insulating positioning component is abutted to the rear side of the first insulating partition plate; the inner ring end of the base layer coil extends upwards to sequentially pass through the notch and the litz wire inlet.

Optionally, the notch communicates with the through hole.

Optionally, a second insulating partition plate is arranged between the magnetic sheet and the build-up coil.

Optionally, a rack is provided on the front side of the housing.

Optionally, the housing includes a housing body and a shielding cover detachably connected to the housing body; the boss is disposed in the shell body.

Optionally, a sealing strip is arranged between the shielding cover and the shell main body.

Optionally, a first heat dissipation component is arranged between the magnetic sheet and the shielding cover.

Optionally, a waterproof joint and an air-permeable valve are arranged on the shell main body.

Optionally, glue is filled in the shell.

The utility model also provides a transmitting device for wireless charging, which comprises the electric energy sensor for wireless charging, wherein a separation plate is arranged in the shell, and the separation plate separates the interior of the shell into a resonance chamber for accommodating a resonance capacitor group; the shape of one side of the partition plate facing the induction coil is matched with the shape of the periphery of the induction coil.

Optionally, a second heat dissipation component is arranged on one side of the harmonic capacitor group.

The technical scheme of the utility model reduces the occupied area of the induction coil under the condition of ensuring the same wireless charging power, is beneficial to the standardization of the winding of the induction coil, has a heat dissipation effect, and avoids the influence of heating on the wireless charging efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is an exploded view of the present utility model;

FIG. 2 is a schematic view of a view angle structure according to a first embodiment;

FIG. 3 is a schematic view of another view angle structure of the first embodiment;

FIG. 4 is an exploded view of the first embodiment;

FIG. 5 is a schematic view of the structure of the shell body according to the first embodiment;

FIG. 6 is a schematic structural view of an insulation positioning component according to an embodiment;

FIG. 7 is a schematic view of a first insulating spacer according to an embodiment;

FIG. 8 is a schematic view of a view angle structure of a third embodiment;

FIG. 9 is an exploded view of the third embodiment;

fig. 10 is a schematic structural view of a case main body according to a third embodiment;

fig. 11 is a schematic structural view of an insulation positioning component according to a third embodiment.

Reference numerals illustrate:

101. a case main body 1011, a connecting column 1012, a rack 1013, a positioning member 1014, a first mounting hole 1015, a first partition plate 1016, a second partition plate 102, a shield cover 1021, a counter bore 1022, and a second mounting hole;

201. a base layer coil, 202, a build-up layer coil;

3. a boss 301, a base layer 302, a stage increasing layer 303, a first bump 304 and a second bump;

4. a magnetic sheet 401, a first magnetic sheet layer, 402, a second magnetic sheet layer;

5. the insulation positioning component 501, the sleeve opening 502, the litz wire inlet 503, the sleeve tooth 504, the first ring section 505, the second ring section 506, the third ring section 507 and the fourth ring section;

6. the first insulating partition board 601, the through hole 602, the notch 603 and the slit;

7. the temperature sensor comprises a second insulating partition plate, 8, sealing strips, 9, a first heat radiating component, 10, a second heat radiating component, 11, a first waterproof joint, 12, a second waterproof joint, 13, a ventilation valve, 14, a harmonic capacitance group, 15 and an NTC temperature sensor.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is also to be understood that the terminology used in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be noted that, in the embodiments of the present utility model, directional indications (such as up, down, left, right, front, and rear … …) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature.

As shown in fig. 1, the utility model provides an electric energy sensor for wireless charging, which comprises a shell, wherein an induction coil is arranged in the shell, and a magnetic sheet 4 is arranged at the rear side of the induction coil; the induction coil comprises a base coil 201 and a multilayer coil 202, wherein the number of turns of the multilayer coil 202 is smaller than that of the base coil 201; the base layer coil 201 is connected in series with the build-up layer coil 202, and the winding directions of the base layer coil 201 and the build-up layer coil 202 are the same; the inner side of the shell is provided with a boss 3, the front end of the boss 3 is connected with the shell, the rear end of the boss is positioned in the middle of the inner ring of the induction coil, and the peripheral shape of the boss 3 is matched with the shape of the inner ring of the induction coil. The two ends of the induction coil are connected with a power line, and the power line penetrates out of the shell and then is connected with a power supply.

The boss 3 plays a role in positioning and stabilizing the induction coil, and ensures that the center of the inner ring of the base coil 201 and the center of the inner ring of the build-up coil 202 are coaxial. The shape of the boss 3 can be adjusted according to the winding condition of the induction coil under the condition that the boss 3 meets the structure and the function.

The induction coil transmits electric energy through magnetic induction. The combined structure of the base coil 201 and the build-up coil 202 has high power transmission efficiency, so that the wireless charging device can continuously and stably work, has low failure rate, and can ensure that the occupied area of the induction coil is reduced under the condition that the induction coil and the existing coil reach the same power, namely the occupied area of the whole induction coil is reduced, the use of the induction coil is more convenient, and the problem of serious heating is avoided. In addition, the magnetic sheet 4 of the present utility model can shield the magnetic field at the rear side of the induction coil even if the magnetic sheet 4 has no magnetic field at the side facing away from the induction coil.

Example 1

As shown in fig. 2-7, this embodiment provides an electric energy sensor for wireless charging, which comprises a housing, an induction coil is arranged in the housing, a magnetic sheet 4 is arranged at the rear side of the induction coil, preferably, the magnetic sheet 4 is made of soft magnetic material, and the magnetic sheet 4 is formed by splicing a plurality of magnetic blocks. The inner side of the shell is provided with a boss 3, the front end of the boss 3 is connected with the shell, the rear end of the boss is positioned in the middle of the inner ring of the induction coil, and the peripheral shape of the boss 3 is matched with the shape of the inner ring of the induction coil.

The induction coil includes a base coil 201 and a build-up coil 202, where the base coil 201 and the build-up coil 202 are connected in series, in this embodiment, the base coil 201 and the build-up coil 202 are overlapped, that is, a front side of the build-up coil 202 contacts with a rear side of the base coil 201, an inner ring end of the base coil 201 and an inner ring end of the build-up coil 202 are connected in series, and winding directions of the base coil 201 and the build-up coil 202 are the same, and are all wound anticlockwise. The number of turns of the build-up coil 202 is smaller than that of the base coil 201, the area surrounded by the inner circumference of the build-up coil 202 is X, the area surrounded by the inner circumference of the base coil 201 is Y, and the X is larger than the Y.

Further, the number of turns of the base layer coil 201 is 9-15, the number of turns of the booster coil 202 is 6-11, and in this embodiment, the number of turns of the base layer coil 201 is 9, and the number of turns of the booster coil 202 is 6.

In detail, the number of turns of the base coil 201 from the inner ring to the outer ring is respectively recorded as: a lower first turn, a lower second turn, a lower third turn, a lower fourth turn, a lower fifth turn, a lower sixth turn, a lower seventh turn, a lower eighth turn, a lower ninth turn; the number of turns of the layer-increasing coil 202 is respectively recorded as from the inner ring to the outer ring: the first turn of the upper layer, the second turn of the upper layer, the third turn of the upper layer, the fourth turn of the upper layer, the fifth turn of the upper layer and the sixth turn of the upper layer. In a specific implementation, the first turn on the upper layer may be made to correspond to the fourth turn on the lower layer, the second turn on the upper layer may be made to correspond to the fifth turn on the lower layer, the third turn on the upper layer may be made to correspond to the sixth turn on the lower layer, the fourth turn on the upper layer may be made to correspond to the seventh turn on the lower layer, the fifth turn on the upper layer may be made to correspond to the eighth turn on the lower layer, and the sixth turn on the upper layer may be made to correspond to the ninth turn on the lower layer. In other words, the number of turns of the base layer coil 201 and the build-up layer coil 202 sequentially corresponds from outside to inside.

In addition, the number of turns of the base coil 201 may be 14, the number of turns of the booster coil 202 may be 10, and the corresponding number of turns may be the same as the corresponding principle described above.

In this embodiment, the base layer coil 201 and the build-up layer coil 202 are each generally square in configuration. The boss 3 is divided into a console layer 302 and a base layer 301, and the front end of the console layer 302 is fixedly connected with the rear end of the base layer 301 and is integrally formed. The shape of the build-up layer 302 is matched with the shape of the inner ring of the build-up coil 202, the shape of the base layer 301 is matched with the shape of the inner ring of the base coil 201, the base layer 301 is positioned at the center of the base coil 201, and the build-up layer 302 is positioned at the middle part of the build-up coil 202. The cross section of the base layer 301 and the cross section of the mesa-increasing layer 302 are both in a substantially square structure, and the outer peripheral shape of the transverse cross section and the longitudinal cross section of the boss 3 is in a convex structure, in other words, the length and the width of the mesa-increasing layer 302 are smaller than the length and the width of the base layer 301. Preferably, a plurality of cavities are provided in the middle of the build-up layer 302, and a plurality of the cavities penetrate through the rear end of the build-up layer 302, and in addition, a plurality of the cavities may also penetrate through the base layer 301.

Further, the thickness of the boss 3 is a, and the thickness of the induction coil is b; the a is greater than one half of the b and less than or equal to the b. In this embodiment, the thickness of the base layer 301 is equal to the thickness of the base coil 201, and the thickness of the build-up layer 302 is equal to the thickness of the build-up coil 202, so that the overall thickness of the boss 3 is equal to the thickness of the induction coil.

The embodiment further comprises an insulation positioning component 5, a sleeve opening 501 is arranged in the middle of the insulation positioning component 5, the outer side edge of the insulation positioning component 5 is recessed inwards to form a litz wire inlet 502, the sleeve opening 501 is communicated with the litz wire inlet 502, and the insulation positioning component 5 can be regarded as an annular structure with a fracture. The insulating positioning member 5 is positioned in the inner ring of the build-up coil 202 and positioned at the rear side of the base coil 201; the insulating positioning component 5 is sleeved at the rear end of the boss 3 through the sleeve opening 501, the inner ring end of the base coil 201 extends upwards to pass through the litz wire inlet 502, and the build-up coil 202 is formed by winding around the outer periphery of the insulating positioning component 5. The insulating positioning component 5 can further relatively fix the central position of the base layer coil 201 and the central position of the build-up coil 202 to be the same central position, and meanwhile, the build-up coil 202 is wound more regularly, so that the working efficiency of the utility model in wireless charging is improved.

In detail, the outer circumference of the insulating positioning member 5 has the same general shape as the inner circumference of the build-up coil 202, and the size thereof can be appropriately adjusted according to the increase or decrease of the number of winding turns of the build-up coil 202, that is, the number of turns of the build-up coil 202 is relatively large, so that the size of the insulating positioning member 5 is relatively small; the number of turns of the build-up coil 202 is relatively small, and the size of the insulating positioning member 5 is relatively large. The shape and size of the pocket 501 are matched with the shape and size of the inner ring of the base coil 201, that is, the shape and size of the pocket 501 are matched with the outer circumference shape and size of the boss 3.

The front end and the rear end of the insulating positioning component 5 are of plane structures parallel to each other, the front end face of the insulating positioning component 5 is kept in safe contact with the base coil 201, the winding structure of the base coil 201 is not damaged, meanwhile, the utility model is in a stable state, and the winding precision of the build-up coil 202 is improved.

Further, a plurality of sleeve teeth 503 are arranged on the wall of the sleeve opening 501 of the insulating positioning member 5, and the sleeve teeth 503 are arranged at intervals. The sleeve teeth 503 make the insulation positioning component 5 be more easily sleeved on the boss 3, and simultaneously be easily removed from the boss 3, so as to improve the production and processing efficiency. In this embodiment, the insulating positioning member 5 is sleeved on the build-up layer 302. The sleeve teeth 503 reduce the contact area between the insulating positioning member 5 and the boss 3, reduce friction, and stabilize the position of the insulating positioning member 5.

In detail, the set of teeth 503 is divided into a plurality of groups, the number of the set of teeth 503 is a plurality, the set of teeth 503 is a plurality of groups, the distance between the set of teeth 503 is 20-30mm, and the contact points between the set of teeth 503 and the build-up layer 302 are reduced as much as possible under the condition of ensuring the supporting strength of the insulating positioning component 5. The set of teeth 503 in this embodiment are spaced 25mm apart. The length of the sleeve teeth 503 is 3-6mm, and the length of the sleeve teeth 503 in this embodiment is 4mm. The friction between the sleeve teeth 503 and the boss 3 can be reduced as much as possible, the strength of the sleeve teeth 503 is ensured, the sleeve teeth are prevented from being broken and damaged during use, and the service life is prolonged.

The thickness of the sleeve teeth 503 is consistent with that of the insulation positioning component 5, and the sleeve teeth 503 and the insulation positioning component 5 are in an integral structure. The thickness of the insulating and positioning member 5 may be adjusted according to the diameter of the litz wire of the wound coil, and the larger the diameter of the litz wire is, the larger the thickness of the insulating and positioning member 5 is, and the thickness of the insulating and positioning member 5 may be equal to the diameter of the litz wire. The thickness of the insulating positioning member 5 may also be slightly smaller than the diameter of the litz wire.

Further, the shape of the end of the plurality of sleeve teeth 503 away from the outer side wall of the insulating positioning member 5 is substantially the same as the outer peripheral shape of the insulating positioning member 5, and in this embodiment, the plurality of sleeve teeth are each substantially square.

Specifically, the insulating positioning member 5 includes a first ring segment 504, a second ring segment 505, a third ring segment 506, and a fourth ring segment 507, the first ring segment 504 is parallel to the third ring segment 506, the second ring segment 505 is parallel to the fourth ring segment 507, and the second ring segment 505 is perpendicular to the first ring segment 504; the upper end and the lower end of the second ring segment 505 are respectively connected with the left ends of the first ring segment 504 and the third ring segment 506, and the right end of the third ring segment 506 is connected with one end of the fourth ring segment 507; the space between the right end of the first ring segment 504 and the other end of the fourth ring segment 507 is the litz wire inlet 502.

In this embodiment, the number of the set of teeth 503 is 2, the set of teeth 503 is a first set of teeth 503 disposed inside the first ring segment 504, the set of teeth 503 is a second set of teeth 503 disposed inside the second ring segment 505, and the set of teeth 503 is a third set of teeth 503 disposed inside the third ring segment 506. The first and third sets of set teeth 503 are spaced apart by 30mm and the second set of set teeth 503 are spaced apart by 25mm. The length of the first ring segment 504 and the third ring segment 506 are both longer than the second ring segment 505. The set of teeth 503 on each inner side of the first ring segment 504, the second ring segment 505 and the third ring segment 506 are at a distance from both ends thereof.

The width of the first ring segment 504 plus the width of the corresponding set tooth 503 is equal to H, the width of the second ring segment 505 plus the width of the corresponding set tooth 503 is equal to L, the width of the third ring segment 506 plus the width of the corresponding set tooth 503 is equal to M, the width of the fourth ring segment 507 is equal to N, and the values of H, L, M and N are equal.

In this embodiment, the joints of the first ring segment 504, the second ring segment 505, the third ring segment 506 and the fourth ring segment 507 respectively adopt arc transition, so as to avoid damaging the coil structure.

Further, the plurality of sleeve teeth 503 are all of a substantially square structure, and the connection edges and corners between the surfaces of the sleeve teeth 503 far away from the outer side wall of the insulating positioning member 5 and the left and right side surfaces thereof are in arc transition. The plurality of set teeth 503 are all the same width.

Further, the forward projection of the right end surface of the first ring segment 504 forms a projection line a, the forward projection of the right side wall of the fourth ring segment 507 forms a projection line B, the projection line B is located on the right side of the projection line a, the vertical distance between the projection line a and the projection line B is greater than or equal to N times the litz wire diameter, and N is a natural number or a fraction greater than zero. In other words, the length of the first ring segment 504 is equal to the length of the third ring segment 506, and the width of the fourth ring segment 507 is greater than or equal to N times the litz wire diameter; or the sum of the length of the third ring segment 506 and the width of the fourth ring segment 507 minus the length of the first ring segment 504 is equal to N times the litz wire diameter.

In this embodiment, the length of the first ring segment 504 is greater than the length of the third ring segment 506, and the sum of the length of the third ring segment 506 and the width of the fourth ring segment 507 minus the length of the first ring segment 504 is equal to N times the litz wire diameter.

The fourth ring section 507 can effectively press the end of the inner ring of the base layer coil 201 to be tilted, so that the structure of the base layer coil 201 is prevented from being influenced, the compactness degree of two adjacent layers of coils is prevented from being influenced, and the wireless charging efficiency is prevented from being influenced.

In this embodiment, the width direction of the first ring segment 504, the width direction of the third ring segment 506, and the width direction of the set of teeth 503 on the first ring segment 504 and the third ring segment 506 are the same, and are all parallel to the second ring segment 505; the width directions of the second ring section 505, the fourth ring section 507 and the set teeth 503 of the second ring section 505 are the same, and are all parallel to the first ring section 504.

Further, a first insulating partition plate 6 is arranged between the base layer coil 201 and the build-up layer coil 202, a through hole 601 and a notch 602 are formed in the first insulating plate, the notch 602 is used for allowing litz wires to pass through, the first insulating partition plate 6 is sleeved on the boss 3 through the through hole 601, the front side of the insulating positioning component 5 is abutted to the rear side of the first insulating partition plate 6, and the front side of the first insulating partition plate 6 is abutted to the rear side of the base layer coil 201; the inner loop end of the base layer coil 201 extends upward through the notch 602 and the litz wire inlet 502 in sequence. Preferably, the notch 602 communicates with the through hole 601, and the notch 602 is located at the right end portion of the first insulating spacer 6. The notch 602 facilitates relatively fixing the position where the inner end of the base coil 201 extends upward, i.e., the starting position where the build-up coil 202 starts to wind.

The size of the through hole 601 is between the size of the inner ring of the base layer coil 201 and the size of the inner ring of the build-up layer coil 202, or the size of the through hole 601 is matched with the size of the outer periphery of the boss 3, so that the first insulating partition board 6 can isolate the overlapping part of the base layer coil 201 and the build-up layer coil 202, and the heating degree of the induction coil is reduced under the condition of not influencing wireless charging.

The first insulating plate is provided with a slit 603, and the slit 603 extends from the right end outer side wall of the first insulating spacer 6 to the notch 602, in other words, the right end portion of the first insulating spacer 6 is slit by the slit 603. When the litz wire does not conveniently enter the rear side of the first insulating separator 6 from the notch 602, the litz wire may enter the notch 602 from the side of the first insulating separator 6 through the slits 603, i.e., the litz wire passes through the notch 602 to the rear side of the first insulating separator 6.

In this embodiment, the base layer coil 201 and the layer-adding coil 202 are wound by the same litz wire, one end of the litz wire is wound from outside to inside to form the base layer coil 201, and then the litz wire passes through the notch 602 and the litz wire inlet 502 and then sequentially passes along the peripheries of the first ring section 504, the second ring section 505, the third ring section 506 and the fourth ring section 507 from inside to outside to form the layer-adding coil 202.

Further, a second insulating partition 7 is arranged between the magnetic sheet 4 and the build-up coil 202, so that the heating degree of the induction coil is further reduced, and the wireless charging efficiency is ensured. The first insulating partition board 6 and the second insulating partition board 7 are made of insulating bakelite plates, so that heat dissipation can be assisted, a magnetic field is not influenced, and normal operation of the utility model is facilitated.

Further, the housing includes a housing main body 101 and a shielding cover 102, the shielding cover 102 is detachably connected with the housing main body 101, specifically, a connecting column 1011 is provided on an outer side wall of the housing main body 101, a threaded hole is provided in the connecting column 1011, a countersunk hole 1021 is provided on the shielding cover 102, and a screw penetrates through the countersunk hole 1021 and then is connected with the threaded hole, and other detachable connection structures, such as a corresponding clamping structure, are provided on the housing main body 101 and the shielding cover 102, are also possible. A sealing strip 8 is arranged between the shielding cover 102 and the shell main body 101, the boss 3 is arranged in the shell main body 101, and specifically, the front end of the boss 3 is connected with the middle part of the inner side of the shell main body 101, which faces the induction coil.

The inner wall of the case main body 101 is adapted to the outer circumferential shape of the induction coil. The housing main body 101 is provided with a retaining member 1013, and the retaining member 1013 is integrally formed with the housing main body 101. The rear end face of the clamping part 1013 is flush with the rear side of the induction coil, the inner side of the clamping part 1013 is used as a part of the inner side wall of the shell main body 101, the inner side shape of the clamping part 1013 is matched with the outer ring shape of the induction coil, the outer peripheral shape of the first insulating partition 6 is identical with the outer peripheral shape of the induction coil, and the induction coil and the first insulating partition 6 are both positioned in the area surrounded by the clamping part 1013. The second insulating partition 7 abuts against the rear end of the clamping component 1013, so that the installation position of the induction coil is stable, and the induction coil is protected from being structurally stable.

Further, a first heat dissipation component 9 is arranged between the magnetic sheet 4 and the shielding cover 102, and the first heat dissipation component 9 is a heat conduction silica gel pad, so as to perform insulation and heat dissipation functions. The waterproof connector and the ventilation valve 13 are arranged on the shell main body 101, and specifically, the waterproof connector and the ventilation valve 13 are arranged at the right end of the shell main body 101. The waterproof joint comprises a first waterproof joint 11 and a second waterproof joint 12, and the first waterproof joint 11 is provided with two waterproof joints. The two ends of the induction coil are respectively connected with a power line, and the power line respectively penetrates through the two first waterproof connectors 11 to be connected with a power supply.

In summary, the induction coil, the first insulating partition 6, the insulating positioning member 5, the second insulating partition 7, the magnetic sheet 4, and the first heat dissipating member 9 are all disposed in the housing main body 101 and are stacked.

In this embodiment, the front side of the housing is provided with a rack 1012, specifically, the front side of the housing main body 101 is provided with the rack 1012, and the rack 1012 is provided with a plurality of strips and is of a strip structure. A plurality of racks 1012 are arranged in parallel with each other with gaps left therebetween. The rack 1012 and the housing main body 101 are integrally formed, and are made of insulating materials, and in this embodiment, plastic is used. The rack 1012 may reinforce the rigidity of the case main body 101 while increasing the heat radiating surface of the present utility model. The shielding cover 102 is an aluminum plate.

Further, an NTC temperature sensor 15 is disposed in the shell main body 101, and a connection line of the NTC temperature sensor 15 passes through the second waterproof joint 12 and is connected with an external controller, so as to realize temperature detection.

The shell is provided with a plurality of mounting holes, and the mounting holes are used for fixing the utility model on other objects, such as robots, AGVs, unmanned aerial vehicles and the like, which need wireless charging. Specifically, the mounting holes include the first mounting hole 1014 and the second mounting hole 1022, the first mounting hole 1014 is provided on the case main body 101, the second mounting hole 1022 is provided on the shield cover 102, the first mounting hole 1014 and the second mounting hole 1022 are plural and correspond to each other one by one, and when actually mounted, bolts are used to sequentially pass through the first mounting hole 1014 and the second mounting hole 1022 and then detachably connected with other objects.

Example two

The embodiment provides an electric energy sensor for wireless charging, which comprises the technical scheme of the first embodiment, and is further optimized based on the first embodiment, so that the waterproof performance is improved. The same structure as that of the first embodiment is not described in detail, and the difference is that glue is filled into the housing, specifically, the induction coil, the first insulating plate, the insulating positioning component, the second insulating plate, and the magnetic sheet are uniformly arranged in the housing main body, then glue is filled into the housing main body, and after the glue is gelled and fixed, the shielding cover is arranged on the housing main body. The first heat dissipation member and the sealing tape are not provided in this embodiment. In addition, after the winding of the build-up coil is completed, the insulating positioning component can be removed from the boss, and the second insulating plate is installed, namely the insulating positioning component is not remained in the shell.

Example III

As shown in fig. 8-11, the present embodiment provides a transmitting device for wireless charging, which has the same general structure as the first embodiment, and is further improved based on the first embodiment, and the same structure is not described in detail, and the different structure can be described below with reference to the first embodiment.

In this embodiment, a partition plate is disposed in the housing, and separates the interior of the housing into a tuning chamber for accommodating the tuning capacitor bank 14; the shape of one side of the partition plate facing the induction coil is matched with the shape of the periphery of the induction coil. Namely, the partition plate divides the interior of the case main body 101 into two chambers, namely, a left chamber accommodating the induction coil, the first insulating partition plate 6, the insulating positioning member 5, the second insulating partition plate 7, the magnetic sheet 4, and the first heat dissipating member 9; the clamping part 1013 is arranged on the inner side of the left Bian Qiangshi, so that the inner side of the left cavity is matched with the outer periphery of the induction coil, and the shell main body 101, the clamping part 1013 and the separation plate are integrally formed; the right chamber is a matching chamber. Specifically, the partition plates include a first partition plate 1015 and a second partition plate 1016, an upper end of the first partition plate 1015 is connected to an upper side wall of the case main body 101, a lower end of the second partition plate 1016 is connected to a lower side wall of the case main body 101, front ends of the first partition plate 1015 and the second partition plate 1016 are vertically connected to a side of the case main body 101 facing the induction coil, a litz wire channel is left between the first partition plate 1015 and the second partition plate 1016, and two ends of the induction coil pass through the litz wire channel and are electrically connected to the tuning capacitor bank 14. The electric wires of the tuning capacitor group 14 electrically connected with an external power supply pass through the first waterproof connector 11 and the second waterproof connector 12 respectively.

Further, a second heat dissipation component 10 is disposed on one side of the tuning capacitor bank 14, specifically, the second heat dissipation component 10 is disposed on the rear side of the tuning capacitor bank 14, the second heat dissipation component 10 is located in the tuning chamber, and the second heat dissipation component 10 is a heat-conducting silica gel pad.

The insulation positioning member 5 in this embodiment is basically the same as that of the first embodiment, except for the location of the set teeth 503, and the widths and lengths of the first ring segment 504, the second ring segment 505, the third ring segment 506, and the fourth ring segment 507. The same structure of the insulating positioning member 5 as that of the first embodiment will not be described in detail, and the specific different structures are as follows.

In this embodiment, there are two sets of the set teeth 503, and the number of the set teeth 503 in two sets is 5. Two sets of said set of teeth 503 are provided inside said first ring segment 504 and said third ring segment 506, respectively. The width of the first ring segment 504 plus the width of its corresponding set tooth 503 is equal to P, and the width of the third ring segment 506 plus the width of its corresponding set tooth 503 is equal to Q; the P is equal to the Q and is equal to the width of the second ring segment 505; the width of the fourth ring segment 507 is the same as the width of the second ring segment 505. The length of the first ring segment 504 is equal to the length of the third ring segment 506.

In this embodiment, the number of turns of the base coil 201 is 15 turns, and the number of turns of the booster coil 202 is 11 turns. The width of the fourth ring segment 507 is equal to 4 times the litz wire diameter.

Further, the relative positional structure of the boss 3 and other components is the same, but the specific structure of the boss 3 is different from that of the first embodiment, the boss 3 includes a first bump 303 and a second bump 304, and the outer circumference formed around the first bump 303 and the second bump 304 is adapted to the inner circumference of the base coil 201, that is, the outer circumference formed by combining the first bump 303 and the second bump 304 is a substantially square structure. Specifically, the first bump 303 and the second bump 304 are both elongated, the first bump 303 and the second bump 304 are disposed parallel to each other, and a space S is left between them, and the size of the space S can be adjusted according to the size of the inner ring of the base coil 201; in this embodiment, the thickness of the first bump 303 and the second bump 304 are equal to the thickness of the induction coil. Preferably, a plurality of cavities are formed in the middle of the first bump 303 and the second bump 304, and the cavities penetrate through the rear ends of the first bump 303 and the second bump 304. The boss 3 structure of the embodiment reduces the material of the boss 3 structure, and reduces the cost under the condition of guaranteeing the function of the boss 3.

In this embodiment, the magnetic sheet 4 includes a first magnetic sheet layer 401 and a second magnetic sheet layer 402, where the first magnetic sheet layer 401 and the second magnetic sheet layer 402 are overlapped and made of soft magnetic materials, and the first magnetic sheet layer 401 and the second magnetic sheet layer 402 are formed by splicing a plurality of magnetic blocks.

In this embodiment, the winding directions of the base layer coil 201 and the build-up layer coil 202 are clockwise.

Example IV

The embodiment provides a transmitting device for wireless charging, which is further optimized based on the third embodiment, and improves the waterproof performance. The same structure as that of the embodiment is not described in detail, but the difference is that the glue is filled in the shell.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

Claims (14)

1. The electric energy sensor for wireless charging is characterized by comprising a shell, wherein an induction coil is arranged in the shell, and a magnetic sheet is arranged at the rear side of the induction coil;

the induction coil comprises a base layer coil and a layer-adding coil, wherein the number of turns of the layer-adding coil is smaller than that of the base layer coil; the base layer coil and the build-up layer coil are connected in series, and the winding directions are the same;

the inner side of the shell is provided with a boss, the front end of the boss is connected with the shell, the rear end of the boss is positioned in the middle of the inner ring of the induction coil, and the peripheral shape of the boss is matched with the shape of the inner ring of the induction coil.

2. The power inductor for wireless charging according to claim 1, wherein the thickness of the boss is a and the thickness of the induction coil is b; the a is greater than one half of the b and less than or equal to the b.

3. The electric energy sensor for wireless charging according to claim 2, further comprising an insulating positioning member, wherein a pocket is provided in a middle portion of the insulating positioning member, an outer side edge of the insulating positioning member is recessed inward to form a litz wire inlet, and the pocket is in communication with the litz wire inlet;

the insulation positioning component is positioned in the inner ring of the layer-adding coil and positioned at the rear side of the base layer coil; the insulation positioning component is sleeved at the rear end of the boss through the sleeve opening, the end part of the inner ring of the base layer coil extends upwards to pass through the litz wire inlet, and the layer-adding coil is formed by winding the periphery of the insulation positioning component.

4. The electric energy sensor for wireless charging according to claim 3, wherein a first insulating partition plate is arranged between the base layer coil and the build-up layer coil, a through hole and a notch are arranged on the first insulating partition plate, the first insulating partition plate is sleeved on the boss through the through hole, and the front side of the insulating positioning component is abutted against the rear side of the first insulating partition plate; the inner ring end of the base layer coil extends upwards to sequentially pass through the notch and the litz wire inlet.

5. The power sensor for wireless charging of claim 4, wherein the notch communicates with the through hole.

6. An electric energy sensor for wireless charging according to claim 1, wherein a second insulating spacer is provided between the magnetic sheet and the build-up coil.

7. The power sensor for wireless charging of claim 1, wherein the front side of the housing is provided with a rack.

8. The power inductor for wireless charging according to claim 1, wherein the housing comprises a housing body and a shield cover detachably connected to the housing body; the boss is disposed in the shell body.

9. The power inductor for wireless charging according to claim 8, wherein a sealing strip is provided between the shielding cover and the case main body.

10. The power inductor for wireless charging according to claim 8, wherein a first heat sink member is provided between the magnetic sheet and the shield cover.

11. The power sensor for wireless charging according to claim 8, wherein the housing body is provided with a waterproof joint and a ventilation valve.

12. An electrical energy sensor for wireless charging according to any of claims 1-11, wherein said housing is filled with glue.

13. A transmitting device for wireless charging, characterized by comprising an electric energy sensor for wireless charging according to any one of claims 1-11, wherein a partition plate is arranged in the housing, and the partition plate partitions the interior of the housing into a tuning chamber for accommodating a tuning capacitor group; the shape of one side of the partition plate facing the induction coil is matched with the shape of the periphery of the induction coil.

14. The transmitting device for wireless charging of claim 13, wherein a second heat sink member is provided on one side of the tuning capacitor bank.

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