CN213520311U

CN213520311U - NFC antenna, charging and power conversion cabinet and electric vehicle

Info

Publication number: CN213520311U
Application number: CN202022537391.4U
Authority: CN
Inventors: 宋青华; 郑少忠
Original assignee: East Group Co Ltd
Current assignee: East Group Co Ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-06-22
Anticipated expiration: 2030-11-05

Abstract

The utility model relates to a NFC antenna, fill and trade battery and electric vehicle, NFC antenna include the base plate and locate the radiation piece on the surface of base plate, and the radiation piece is formed with two at least induction areas on the base plate to be formed with between two adjacent induction areas and pierce through the district. After the NFC antenna rotates for a preset angle, any induction area is at least partially overlapped with one induction area before the rotation. Every induction area can both receive the radio frequency signal that the lithium cell sent, when the lithium cell put into the battery compartment or the storehouse of charging according to the angle of difference, for having rotated the predetermined angle with the NFC antenna for the lithium cell, the magnetic line of force that the event was sent by the lithium cell will pass different induction areas to the realization is with the vehicle or is filled and trade the electric cabinet communication. Moreover, the metal object of the lithium battery can be arranged in the range of the penetration region, so that the attenuation of the metal object to the magnetic force lines is obviously reduced. Therefore, the lithium battery can be placed in the electric vehicle or the charging and exchanging cabinet at a plurality of different angles, and the communication is not affected, so that the use is more convenient.

Description

NFC antenna, charging and power conversion cabinet and electric vehicle

Technical Field

The utility model relates to a near field communication technical field, in particular to NFC antenna, fill and trade battery jar and electric vehicle.

Background

With the popularization and use of lithium batteries, a large number of lithium batteries are used in various two-wheeled and three-wheeled vehicles in the market. In order to solve the problem of universality of the lithium battery, an nfc (near Field communication) communication scheme is widely applied to communication between the lithium battery and the vehicle and the charging cabinet device.

Since metal is not allowed to exist in the magnetic flux range of the NFC antenna, the communication quality of NFC is greatly reduced. And the battery-side NFC antenna is generally not designed centrally. Therefore, when a lithium battery is put into a charging and changing cabinet or a vehicle, there is a problem of directionality. Once the input direction is not correct, the communication signal will become exponentially weakened, thereby causing the problems of unstable signal, poor accuracy and the like.

However, for a general user who does not know the lithium battery, the charging and replacing cabinet and the vehicle, it is difficult to accurately distinguish the placing directions of the lithium battery, and the situation that the placing directions of the lithium battery are not right often occurs, so that the lithium battery is inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an NFC antenna, a charging and switching cabinet, and an electric vehicle that facilitate the use of a lithium battery.

An NFC antenna comprises a substrate and a radiation sheet arranged on the surface of the substrate, wherein at least two induction areas are formed on the substrate of the radiation sheet, a penetration area is formed between every two adjacent induction areas, and the area of the radiation sheet in any penetration area is smaller than that of the radiation sheet in any induction area;

after the NFC antenna rotates for a preset angle, any one of the induction areas is at least partially overlapped with one of the induction areas before rotation.

In one embodiment, two opposite sensing regions are formed on the substrate, and after the NFC antenna rotates 180 degrees, any one of the sensing regions can be at least partially overlapped with another sensing region before the rotation.

In one embodiment, each of the sensing regions extends along a first direction, and two sensing regions are spaced apart in a second direction perpendicular to the first direction.

In one embodiment, in the first direction, the length of one of the sensing regions is smaller than the length of the other of the sensing regions.

In one embodiment, four sensing regions are formed on the substrate, and each rotation of the NFC antenna by 90 degrees can cause any one of the sensing regions to at least partially overlap with an adjacent sensing region before the rotation.

In one embodiment, every 90 degrees of rotation of the NFC antenna, four sensing regions may completely overlap with the four sensing regions before rotation.

In one embodiment, the substrate is rectangular, and the four sensing regions are respectively located at four top corners of the substrate.

In one embodiment, the substrate is rectangular, and a rectangular through hole is formed in the middle of the substrate and is coaxial with the substrate.

A charging and battery-replacing cabinet, comprising a charging bin and an NFC antenna as described in any of the above preferred embodiments, wherein the NFC antenna is disposed in the charging bin.

An electric vehicle comprising a battery compartment and an NFC antenna as described in any of the above preferred embodiments, the NFC antenna being disposed within the battery compartment.

Every induction area can both receive the radio frequency signal that the lithium cell sent, when the lithium cell put into the battery compartment or the storehouse of charging according to the angle of difference, for having rotated the predetermined angle with the NFC antenna for the lithium cell, the magnetic line of force that the event was sent by the lithium cell will pass different induction areas to the realization is with the vehicle or is filled and trade the electric cabinet communication. Moreover, the position of the metal object at the lithium battery end is designed, so that when the lithium battery is put in, the metal object is positioned in the range of the penetration region, the attenuation of the metal object to the magnetic force lines is obviously reduced, and the signal cannot be severely weakened. Therefore, the lithium battery can be placed in the electric vehicle or the charging and exchanging cabinet at a plurality of different angles, and the communication is not affected, so that the use is more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application 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, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an application scenario of an NFC antenna in an embodiment of the present invention;

fig. 2 is a schematic view of an application scenario of an NFC antenna in another embodiment of the present invention;

fig. 3 is a schematic structural diagram of the NFC antenna shown in fig. 1;

fig. 4 is a schematic structural diagram of the NFC antenna shown in fig. 2.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, the present invention provides an NFC antenna 100, a charging and transforming cabinet, and an electric vehicle. The charging and battery-replacing cabinet comprises a charging bin (not shown) and an NFC antenna 100 arranged in the charging bin; the electric vehicle includes a battery compartment (not shown) and an NFC antenna 100 disposed in the battery compartment.

The lithium battery 200 (only the terminal of the lithium battery is shown in the figure) can be inserted into the charging bin, and the lithium battery 200 is charged by the charging and replacing cabinet. Wherein, also be equipped with the NFC emission module on the lithium cell 200, can send the magnetic line of force, cooperate alright make lithium cell 200 and fill and trade realizing the communication between the battery box through NFC antenna 100 with in the storehouse that charges to the controller of the battery box of changing can gather information such as temperature, electric quantity of lithium cell 200 in real time. It should be noted that, in order to implement NFC communication, an NFC driving main board (not shown) connected to the NFC antenna 100 is generally further disposed in the charging and replacing battery cabinet.

The electric vehicle may be a common two-or three-wheeled electric vehicle, which is powered by the lithium battery 200. Also, the electric vehicle has a battery compartment that houses the lithium battery 200, and the lithium battery 200 can be taken out from the battery compartment. The NFC transmitting module on the lithium battery 200 is matched with the NFC antenna 100 in the charging bin, so that communication between the lithium battery 200 and the electric vehicle can be realized, and information such as the temperature and the electric quantity of the lithium battery 200 can be collected in real time by a controller of the electric vehicle. Similarly, in order to implement NFC communication, an NFC driving board (not shown) connected to the NFC antenna 100 is generally provided in the electric vehicle.

Referring to fig. 3 and 4, the NFC antenna 100 according to the preferred embodiment of the present invention includes a substrate 110 and a radiation plate 120 disposed on a surface of the substrate 110.

The substrate 110 is formed of an insulating material to support the radiation sheet 120. NFC antenna 100 is typically located at the bottom of a charging or battery compartment. Moreover, the charging bin or the battery bin is a rectangular or square bin body, so the bottom of the charging bin or the battery bin is a rectangular or square bin body. Accordingly, the external profile of NFC antenna 100 is also generally rectangular or square.

As shown in fig. 3, in one embodiment, the substrate 110 is rectangular, and a rectangular through hole 111 is formed in the middle of the substrate 110 and is coaxial with the substrate 110. The rectangular through hole 111 may form a clearance for a terminal of the lithium battery 200 inserted into the charging bin or the battery bin, so that the lithium battery 200 may be closer to the NFC antenna 100.

Obviously, the substrate 110 may also be aligned with the extending direction of the radiation sheet 120. In another embodiment, as shown in FIG. 4, the base plate 110 is substantially C-shaped.

In addition, the NFC antenna 100 in the preferred embodiment of the present invention further includes an installation bottom case 130, and the NFC antenna 100 is installed at the bottom of the battery compartment or the charging compartment through the installation bottom case 130. The mounting base 130 may be a plate or cylindrical structure having a cross-sectional profile matching that of the battery or charging compartment, and is generally rectangular. In addition, the mounting bottom case 130 is also provided with a space-avoiding hole (not shown) for avoiding a terminal of the lithium battery 200.

The radiation sheet 120 may be a copper foil coated on the surface of the substrate 110. Generally, the radiation sheet 120 and the substrate 110 are provided with mounting holes at opposite positions for fixedly mounting the NGC antenna. The radiation sheet 120 has at least two sensing regions 101 formed on a substrate 110, and a penetration region 102 formed between two adjacent sensing regions 101. Moreover, the area of the radiation plate 120 in any penetration region 102 is smaller than the area of the radiation plate 120 in any sensing region 101. Specifically, the sensing region 101 and the penetrating region 102 can be obtained by etching the copper foil along a predetermined path.

Since the sensing region 101 is covered with a large number of radiation fins 120, the NFC antenna 100 can receive signals when magnetic lines of force pass through any one of the sensing regions 101. Since the radiation sheet 120 is less or even no radiation sheet 120 is disposed in the penetration region 102, even if there is a metal object in the range of the penetration region 102, the magnetic field lines will not be significantly attenuated. Therefore, the position of the metal object on the lithium battery 200 can be designed so that the metal object is opposite to the penetration region 102 when the lithium battery 200 is placed in the battery compartment or the charging compartment.

The plurality of sensing regions 101 are electrically connected to each other, and thus form an integral structure. Specifically, the adjacent sensing regions 101 may be electrically connected by a thin conductive strip etched from the radiation sheet 120, and the thin conductive strip passes through the corresponding penetration region 102. Because the area of the conductive strip is small, when a metal object exists in the penetration region 102, the magnetic field lines are not significantly attenuated due to the existence of the conductive strip.

Further, after the NFC antenna 100 rotates by a preset angle, any sensing region 101 at least partially overlaps with one of the sensing regions 101 before the rotation. It is assumed that when the lithium battery 200 is inserted into the battery compartment or the charging compartment at a certain angle, the magnetic lines of force generated by the lithium battery 200 can pass through one of the sensing regions 101, thereby achieving communication between the lithium battery 200 and the electric vehicle or the charging and discharging cabinet.

When the lithium battery 200 is inserted into the battery compartment or the charging compartment by rotating the predetermined angle, the insertion angle of the lithium battery 200 may be regarded as unchanged, and the NFC antenna 100 rotates by the predetermined angle. Since either sensing region 101 at least partially overlaps one of the sensing regions 101 prior to rotation. Therefore, the magnetic lines of force generated by the lithium battery can still pass through one of the sensing regions 101. That is, even if the lithium battery 200 is placed in the electric vehicle or the charging and replacing cabinet after rotating by the preset angle, the communication quality between the lithium battery and the electric vehicle or the charging and replacing cabinet is not affected. Therefore, the lithium battery 200 can be put in at a plurality of different angles, and is effectively foolproof, so that the use is more convenient.

Correspondingly, after the NFC antenna 100 is rotated by a preset angle, any penetration region 102 should also at least partially overlap with one of the penetration regions 102 before the rotation. Thus, when the lithium battery 200 is inserted after rotating a predetermined angle, the metal member thereon is also located within one of the penetration regions 102, thereby preventing the communication quality from deteriorating.

The preset angle can be any angle, but most of the battery bin and the charging bin are rectangular. Therefore, the preset angle is usually 90 degrees or 180 degrees.

As shown in fig. 4, in an embodiment, two opposite sensing regions 101 are formed on the substrate 110, and after the NFC antenna rotates 180 degrees, any one of the sensing regions 101 may at least partially overlap with another sensing region 101 before the rotation.

At this time, the radiation sheet 120 has a substantially C-shape. For example, when the lithium battery 200 is inserted into the battery compartment and the charging compartment at a specific angle, the magnetic lines of force generated by the lithium battery can pass through an upper sensing region 101. When the lithium battery 200 is rotated by 180 degrees and inserted again, the magnetic lines of force emitted therefrom pass through one of the sensing regions 101 below. That is, the lithium battery 200 may be put into a charging and changing cabinet or an electric vehicle from two angles that are different by 180 degrees.

Such an NFC antenna 100 is suitable for a charging chamber or a battery chamber having a rectangular cross section, that is, a charging chamber or a battery chamber having different lengths and widths. Since the lithium battery 200 cannot be inserted after being rotated by 90 degrees due to the difference in length and width, an operator may only mistakenly insert the lithium battery in two directions differing by 180 degrees.

Further, in the present embodiment, each sensing region 101 extends along a first direction, and two sensing regions 101 are spaced apart in a second direction perpendicular to the first direction.

The horizontal direction shown in the figure is the first direction, while the vertical direction is the second direction. It can be seen that each sensing region 101 is a strip, and the larger space between two sensing regions 101 is the transmission region 102. With such an arrangement, the area of the penetration region 102 is larger and the shape is more regular, thereby being more beneficial to layout of metal objects on the lithium battery 200.

Further, in the present embodiment, in the first direction, the length of one of the sensing regions 101 is smaller than the length of the other sensing region 101. It can be seen that the lengths of the two sensing regions 101 are not the same. The radiation sheet 120 is not covered at the position corresponding to the longer sensing region 101 at the end of the shorter sensing region 101, so that the area of the penetration region 102 can be further increased, and the interference of metal objects on the lithium battery 200 on the intensity of the communication signal can be further avoided.

As shown in fig. 3, in another embodiment, four sensing regions 101 are formed on the substrate 110, and each time the NFC antenna rotates 90 degrees, any one of the sensing regions 101 may at least partially overlap with an adjacent sensing region 101 before the rotation.

Specifically, the four sensing regions 101 are annularly and alternately distributed on the substrate 110. As shown, the four sensing zones 101 are sensing zones A, B, C, D respectively in a clockwise direction. After rotating 90 degrees clockwise, the sensing area a will at least partially overlap with the sensing area B before rotating, and the sensing area B will at least partially overlap with the sensing area C before rotating, and so on. After rotating 90 degrees counterclockwise, the sensing area D will at least partially overlap the sensing area C before rotating, and the sensing area C will at least partially overlap the sensing area B before rotating, and so on.

When the lithium battery 200 is inserted into the battery compartment and the charging compartment at a specific angle, the magnetic lines of force generated by the lithium battery can pass through one of the sensing regions 101. When the lithium battery 200 is rotated by 90 degrees and inserted again, the magnetic lines of force emitted by the lithium battery pass through the adjacent one of the sensing regions 101. For example, when the magnetic lines emitted from the lithium battery 200 can pass through the sensing region a, if the lithium battery 200 is inserted after rotating clockwise by 90 degrees, the magnetic lines emitted therefrom can pass through the sensing region B; if the lithium battery 200 is inserted after rotating 90 degrees counterclockwise, the magnetic lines of force generated by the lithium battery can pass through the sensing region D. By analogy, every time the lithium battery 200 rotates by 90 degrees, the magnetic lines of force can pass through one of the sensing regions 101. Therefore, the lithium battery 200 can be placed in a charging and exchanging cabinet or an electric vehicle after being rotated by 90 degrees at will, so that the fool-proof effect is better.

Such an NFC antenna 100 is suitable for a charging chamber or battery chamber with a square cross section, i.e. the charging chamber or battery chamber has the same length and width. Due to the consistent length and width, the operator may miss the insertion angle in all four directions.

Further, in the present embodiment, every time the NFC antenna 100 rotates by 90 degrees, the four sensing regions 101 may completely overlap with the four sensing regions 101 before the rotation.

That is, the sensing regions 101 have the same shape, and are arranged at different angles on the substrate 110. As shown, each sensing region 101 is rectangular, and two adjacent sensing regions 101 are rotated 90 degrees with respect to each other. Thus, each 90 degree rotation, the sensing region 101 completely overlaps the adjacent sensing region 101 before the rotation. Therefore, no matter what angle the lithium battery 200 is inserted into the battery compartment or the charging compartment, the areas of the sensing regions 101 receiving the magnetic lines of force are the same, which is beneficial to ensuring the stability of communication.

Specifically, in the present embodiment, the substrate 110 is rectangular, and the four sensing regions 101 are respectively located at four top corners of the substrate 110. Therefore, the plurality of penetration zones 102 are connected into a cross-shaped area, and the symmetry is better. In this way, no matter how the lithium battery 200 rotates, the metal objects thereon will fall within the range of the penetration region 102, so that the metal objects on the lithium battery 200 can be conveniently arranged.

Above-mentioned NFC antenna 100, the cabinet that trades electricity and electric vehicle that charges, each induction area 101 can both receive the radio frequency signal that lithium cell 200 sent. When the lithium battery 200 is placed in the battery compartment or the charging compartment at different angles, the NFC antenna 100 is rotated by a preset angle relative to the lithium battery 200, so that magnetic lines of force emitted by the lithium battery 200 pass through different sensing regions 101, thereby achieving communication with a vehicle or a charging and replacing battery cabinet. Moreover, the position of the metal object at the end of the lithium battery 200 is designed, so that when the lithium battery 200 is placed in, the metal object is located within the range of the penetration region 102, and therefore, the attenuation of the metal object to the magnetic force lines is obviously reduced, and the signal cannot be severely weakened. Therefore, the lithium battery 200 can be placed in the electric vehicle or the charging and exchanging cabinet at a plurality of different angles, and the communication is not affected, so that the use is more convenient.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An NFC antenna is characterized by comprising a substrate and a radiation sheet arranged on the surface of the substrate, wherein at least two induction areas are formed on the substrate of the radiation sheet, a penetration area is formed between every two adjacent induction areas, and the area of the radiation sheet in any penetration area is smaller than that of the radiation sheet in any induction area;

2. The NFC antenna according to claim 1, wherein two opposite sensing regions are formed on the substrate, and after the NFC antenna rotates 180 degrees, any one of the sensing regions can at least partially overlap with another sensing region before the rotation.

3. The NFC antenna of claim 2, wherein each of the sensing regions extends along a first direction, and wherein the two sensing regions are spaced apart in a second direction perpendicular to the first direction.

4. The NFC antenna of claim 3, wherein a length of one of the sensing regions is less than a length of the other of the sensing regions in the first direction.

5. The NFC antenna of claim 1, wherein four of the sensing regions are formed on the substrate, and each 90 degrees rotation of the NFC antenna causes at least partial overlap of any one of the sensing regions with an adjacent sensing region prior to the rotation.

6. The NFC antenna of claim 5, wherein for every 90 degrees rotation of the NFC antenna, four of the sensing regions completely overlap with four of the sensing regions prior to the rotation.

7. The NFC antenna of claim 5, wherein the substrate is rectangular and the four sensing regions are located at four corners of the substrate.

8. The NFC antenna according to claim 1, wherein the substrate is rectangular, and a rectangular through hole is formed in a middle portion of the substrate and is coaxial with the substrate.

9. A charging and transforming cabinet comprising a charging chamber and an NFC antenna according to any of claims 1 to 8, said NFC antenna being disposed within said charging chamber.

10. An electric vehicle comprising a battery compartment and an NFC antenna according to any of claims 1 to 8 disposed within the battery compartment.