CN216622692U - Power transmission power module and laser radar system - Google Patents

Abstract

The utility model provides an electricity transmission power module and a laser radar system. The stator winding and the first coil are integrated on the first circuit board, the second coil is integrated on the second circuit board, the distance measuring module is connected with the second circuit board, the stator winding and the rotor magnet are matched to provide power for driving the distance measuring module to rotate, and the second coil is used for receiving electromagnetic waves emitted by the first coil so as to realize electricity transmission between the first circuit board and the second circuit board. The power transmission module can supply power to the ranging module of the laser radar system and drive the ranging module to rotate. The vertical height of the first circuit board and the second circuit board is low, and various functional components such as the stator winding, the rotor magnet, the first coil and the second coil are integrated on the circuit board, so that the height of the laser radar is reduced, the size is reduced, the number of structural parts is reduced, the complexity of an assembly process is reduced, and the cost is reduced.

Description

Power transmission power module and laser radar system

Technical Field

The utility model belongs to the technical field of radars, and particularly relates to an electricity transmission power module and a laser radar system.

Background

Have the fixing base and the rotation piece of relative setting in the laser radar that has, stator winding and rotor magnet are located the fixing base and rotate between the piece and encircle the pivot setting of rotating the piece for the primary coil and the secondary coil of biography electricity also set up between fixing base and rotation piece, and one side that the fixing base rotated the piece back to is equipped with the transmitting circuit board, and one side that the rotation piece back to the fixing base is equipped with receiving circuit board, and receiving circuit board one side is equipped with the range finding module. The laser radar with the structure has the advantages of large volume, high vertical height, more structural parts and high complexity of wire winding and welding, so that the whole laser radar is relatively complex in assembly process and high in price.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model aims to provide an electricity transmission power module and a laser radar system, and aims to solve the technical problems that in the prior art, the laser radar is large in size, high in vertical height and high in wire winding and welding complexity.

In order to achieve the purpose, the utility model adopts the technical scheme that: an electric power transmission module is provided, which includes a first circuit board, a second circuit board and a rotor magnet. The first circuit board is integrated with a stator winding and a first coil. The second circuit board is integrated with a second coil, and the first coil and the second coil are oppositely arranged. The rotor magnet is used for driving the second circuit board to rotate, and the stator winding and the rotor magnet are oppositely arranged.

Optionally, the first circuit board and the second circuit board are arranged in parallel, and one face of the first circuit board, on which the stator winding and the first coil are integrated, is arranged opposite to one face of the second circuit board, on which the second coil is integrated.

Optionally, the first coil is located at the outer periphery of the stator winding;

alternatively, the stator winding is located at an outer periphery of the first coil.

Optionally, a code is disposed on the first circuit board, and the code is disposed around an outer periphery of the stator winding or an outer periphery of the first coil.

Optionally, the power transmission module further comprises a rotating bracket, the second circuit board is fixedly mounted on the rotating bracket, and the rotating bracket rotates along with the second circuit board under the driving of the stator winding.

Optionally, the second circuit board is fixedly mounted on the lower surface of the rotating bracket.

Optionally, the rotor magnet has a plurality of magnetic poles, the stator winding has a plurality of winding coils, and the number of the magnetic poles is not equal to the number of the winding coils.

Optionally, the stator winding is polygonal or circular in shape.

According to another aspect of the utility model, the utility model further provides a laser radar system, which comprises a distance measurement module and the power transmission module. The electric power transmission module is used for supplying power to the ranging module and driving the ranging module to rotate.

Optionally, the lidar system includes a base, the first circuit board being mounted to the base;

and/or, the laser radar system includes the upper cover, the upper cover is located on the range finding module.

The power transmission module and the laser radar system provided by the utility model have the beneficial effects that: compared with the prior art, the power transmission module integrates the stator winding and the first coil on the first circuit board, integrates the second coil on the second circuit board, and the stator winding and the rotor magnet form the motor, so that the power transmission module can be used for driving the distance measurement module connected to the second circuit board to rotate. The distance measurement module can emit a first laser signal and receive a second laser signal reflected back, and determine the barrier information according to the first laser signal and the second laser signal. And the first coil and the second coil are matched to realize the electricity transmission effect between the first circuit board and the second circuit board, so that the power is supplied to a ranging module of the laser radar system and the ranging data exchange is realized. Like this, because the vertical height of first circuit board and second circuit board itself is low, and through integrated mode with the part integration on the circuit board of multiple functions such as stator winding, rotor magnet, first coil, second coil to not only be favorable to reducing lidar's height, reduce lidar's volume, can reduce lidar's structure quantity in addition, reduce the assembly process complexity, reduce lidar's cost simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a lidar system according to an embodiment of the present disclosure, wherein the lidar system includes an electric power module;

fig. 2 is a schematic structural diagram of an upper cover, an electric power transmission module, and a base of a laser radar system according to an embodiment of the present invention;

FIG. 3 is an exploded view of a lidar system provided by an embodiment of the present invention;

fig. 4 is a schematic perspective view of a first circuit board of a laser radar system according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a second circuit board of a lidar system according to an embodiment of the present invention;

fig. 6 is a cross-sectional view of a lidar system provided by an embodiment of the utility model.

Wherein, in the figures, the respective reference numerals:

1-an electric power transmission module; 10-a first circuit board; 11-a stator winding; 12-a first coil; 13-encoding; 2-a distance measuring module; 20-a second circuit board; 21-a rotor magnet; 22-a second coil; 3-a base; 30-rotating the bracket; 301-connection hole; 31-a turntable; 32-a rotating shaft; 4, covering the upper cover; 40-a bearing; 5-a data interface; 50-a first shim; 60-a second gasket; 70-clamp spring.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

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 be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model.

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 one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 4 and 5, a power transmission module 1 according to an embodiment of the present invention will now be described. The power transmission module 1 comprises a power transmission part and a transmission part, wherein the power transmission part mainly comprises a first coil 12 and a second coil 22, the transmission part comprises a stator winding 11 and a rotor magnet 21, the stator winding 11 and the first coil 12 are integrated on a first circuit board 10, and the second coil 22 is integrated on a second circuit board 20. The rotor magnet 21 is used for driving the second circuit board 20 to rotate, and the stator winding 11 and the rotor magnet 21 are oppositely arranged.

As shown in fig. 4, the first circuit board 10 integrates the stator winding 11, the first coil 12, and other necessary components, such as a code 13. As shown in fig. 5, the first surface of the second circuit board 20 integrates the rotor magnet 21, the second coil 22, and other necessary components. The stator winding 11 is integrated on the first circuit board 10 in the form of a coil circuit, and the position of the rotor magnet 21 corresponds to the position of the stator winding 11, so that the stator winding 11 and the rotor magnet 21 cooperate to form a motor, and the motor can drive the second circuit board 20 on which the rotor magnet 21 is positioned to rotate relative to the first circuit board 10, thereby realizing transmission. The distance measuring module is connected to the second surface of the second circuit board 20. The first coil 12 and the second coil 22 are arranged oppositely, the first coil 12 sends electromagnetic wave signals, the second coil 22 receives the electromagnetic wave signals sent by the first coil 12, and the first coil 12 and the second coil 22 are mutually matched, so that electricity transmission between the first circuit board 10 and the second circuit board 20 is realized, and a working power supply is provided for the first circuit board 10 and the second circuit board 20. All components integrated on the first circuit board 10 and the second circuit board 20 include not only the case where the components are fixed on the circuit boards, but also the case where the components are embedded on the circuit boards.

Compared with the prior art, the power module 1 integrates the stator winding 11 and the first coil 12 on the first circuit board 10, integrates the second coil 22 on the second circuit board 20, and the stator winding 11 and the rotor magnet 21 are matched to form a motor, so that the distance measuring module connected to the second surface of the second circuit board 20 can be driven to rotate; and first coil 12 and second coil 22 cooperate and realize the effect of passing electricity, compare in traditional motor structure that constitutes by stator winding and rotor magnet like this, because the vertical height of first circuit board 10 and second circuit board 20 itself is low, and directly integrate stator winding 11, rotor magnet 21, first coil 12, the part of multiple functions such as second coil 22 on the circuit board through integrated mode, not only be favorable to reducing overall structure's vertical height, reduce the volume, and can reduce the structure quantity, reduce the assembly process complexity, reduce manufacturing cost simultaneously.

In another embodiment of the present invention, the rotor magnet 21 has a plurality of poles, the stator winding 11 has a plurality of winding coils, and the number of poles of the rotor magnet 21 is not equal to the number of winding coils of the stator winding 11.

In another embodiment of the utility model the stator winding 11 is polygonal or circular in shape. For example, the stator winding 11 is triangular or pentagonal.

In another embodiment of the present invention, referring to fig. 3, the stator winding 11 and the first coil 12 are located on the same side of the first circuit board 10. The first circuit board 10 and the second circuit board 20 are arranged in parallel, one side of the first circuit board 10 integrated with the stator winding 11 and the first coil 12 is opposite to one side of the second circuit board 20 integrated with the second coil 22, so that the stator winding 11 is opposite to the rotor magnet 21 in position, the first coil 12 is opposite to the second coil 22 in position, and electricity is conveniently transmitted between the first coil 12 and the second coil 22, and the stator winding 11 is matched with the rotor magnet 21, so that the transmission function of the motor is realized, and the second circuit board 20 is driven to rotate.

In another embodiment of the present invention, referring to fig. 4, the first coil 12 is located at the outer periphery of the stator winding 11. The first coil 12 is annular and disposed around the outer periphery of the stator winding 11. Such a configuration may allow the first coil 12 to be relatively large in size, and the second coil 22 that mates with the first coil 12 may be correspondingly large in size, which may facilitate power transfer.

In another embodiment of the present invention, the stator winding 11 is located at the outer periphery of the first coil 12, and the stator winding 11 is disposed around the outer periphery of the first coil 12. With this structural arrangement, the first coil 12 and the second coil 22 are small in size relative to the case where the first coil 12 is arranged on the outer periphery of the stator winding 11, which is advantageous for mitigating electromagnetic interference between the first coil 12 and the stator winding 11.

In another embodiment of the present invention, referring to fig. 4, the first circuit board 10 is provided with a code 13, and the code 13 is used for measuring the rotation speed and the rotation angle. The encoder 13 is provided on the outer periphery of the stator winding 11 or the outer periphery of the first coil 12. For example, in the embodiment shown in fig. 4, the code 13 has a ring shape, the first coil 12 is located on the outer periphery of the stator winding 11, and the code 13 is located between the stator winding 11 and the first coil 12. In other embodiments, the stator winding 11 may also be located at the outer periphery of the first coil 12, and the code 13 is located between the stator winding 11 and the first coil 12. With this arrangement, the code 13 can be integrated on the first circuit board 10 well without increasing the vertical height and volume of the first circuit board 10. In other embodiments, the code 13 may also take other reasonable shapes, such as a rectangle, and the shape of the code 13 is not limited by the present invention.

In another embodiment of the present invention, referring to fig. 2 and 3, the power transmission module 1 includes a rotating bracket 30, and the second circuit board 20 is fixedly mounted on the rotating bracket 30. The rotor magnet 21 is fixed on the second circuit board 20 or the rotating bracket 30, and the distance measuring module is mounted on the rotating bracket 30. The rotating bracket 30 is driven by a motor formed by the stator winding 11 and the rotor magnet 21 to rotate, and the rotating bracket 30 rotates along with the second circuit board 20 and drives the distance measuring module to rotate.

Specifically, the rotating bracket 30 includes a rotating plate 31 and a rotating shaft 32 connected to the rotating plate 31, and the rotating shaft 32 extends perpendicularly from a center position of one side surface of the rotating plate 31. The centers of the first circuit board 10 and the second circuit board 20 are both provided with through holes, and the rotating shaft 32 passes through the through holes of the centers of the first circuit board 10 and the second circuit board 20, so that the first circuit board 10 and the second circuit board 20 are sleeved on the rotating shaft 32 of the rotating bracket 30. The second circuit board 20 is fixedly mounted to a lower surface of the turntable 31 of the rotating bracket 30. The distance measuring module is mounted on the rotating disc 31, the rotating disc 31 is close to the second circuit board 20, and the first circuit board 10 is located at one end of the rotating shaft 32 far from the rotating disc 31. When the stator winding 11 and the rotor magnet 21 are operated, the rotating bracket 30 rotates and drives the distance measuring module to rotate. Therefore, the first circuit board 10 and the second circuit board 20 can be assembled together through the rotating bracket 30, and the distance measuring module can be mounted on the rotating bracket 30 and driven to rotate through the rotating bracket 30.

In another embodiment of the present invention, referring to fig. 3 and 6, the power transmission module 1 includes a bearing 40, the bearing 40 is installed on the outer circumference of the rotating shaft 32, and the bearing 40 is located between the first circuit board 10 and the second circuit board 20. The mounting bearing 40 can support the rotating bracket 30 and the distance measuring module as a mechanical rotating body, thereby reducing the friction coefficient of the rotating bracket 30 and the distance measuring module in the rotating process and ensuring the rotation precision.

In another embodiment of the present invention, the electro-conductive power module 1 includes a first spacer 50 and/or a second spacer 60 mounted on the bearing 40, the first spacer 50 is located between the first circuit board 10 and the bearing 40, the second spacer 60 is located between the bearing 40 and the second circuit board 20, and the first spacer 50 and the second spacer 60 can protect the bearing 40.

In the embodiment shown in fig. 3, the rotating shaft 32 sequentially passes through the through hole at the center of the second circuit board 20, the second gasket 60, the bearing 40, the first gasket 50 and the through hole at the center of the first circuit board 10, so that the second circuit board 20, the second gasket 60, the bearing 40, the first gasket 50 and the first circuit board 10 are all sleeved on the outer periphery of the rotating shaft 32 and are combined to form a whole. The first spacer 50 prevents the first circuit board 10 from directly contacting the bearing 40, and serves to protect the bearing 40. The second spacer 60 prevents the second circuit board 20 from directly contacting the bearing 40, and serves to protect the bearing 40. In other embodiments, the first spacer 50 or the second spacer 60 may be mounted only at one end of the bearing 40.

In another embodiment of the present invention, referring to fig. 3 and fig. 6, the power transmission module 1 further includes a clamp spring 70, the clamp spring 70 is sleeved on the rotating shaft 32, and the clamp spring 70 is located between the first gasket 50 and the first circuit board 10, so that the clamp spring 70 can prevent the rotating bodies such as the second circuit board 20 and the bearing 40 from coming off from the rotating shaft 32.

Referring to fig. 1, fig. 2, fig. 3 and fig. 6, the present invention further provides a laser radar system, which includes the power transmission module 1 and the distance measurement module 2. The distance measurement module 2 is connected with the electric power transmission module 1, the distance measurement module 2 is connected with the second surface of the second circuit board 20, and the electric power transmission module 1 is used for supplying power to the distance measurement module 2 and driving the distance measurement module 2 to rotate.

Specifically, as shown in fig. 2 and 6, the distance measuring module 2 is mounted on a side surface of the turntable 31 of the rotating bracket 30 opposite to the second circuit board 20, and the rotating bracket 30 plays a role of fixing the distance measuring module 2 and the second circuit board 20. In operation, the rotating bracket 30 drives the distance measuring module 2 to rotate. Range finding module 2 includes transmitter and receiver, and the transmitter of range finding module 2 is used for transmitting laser signal, and the receiver of range finding module 2 is used for receiving the laser signal who reflects back to confirm the barrier information, realize the range finding. The distance measuring module 2 is electrically connected with the power transmission module 1, for example, the distance measuring module 2 can be electrically connected with the second circuit board 20 to supply power to the distance measuring module 2 and realize the exchange of distance measuring data.

In another embodiment of the present invention, as shown in fig. 1 to 3, the lidar system further includes a base 3, the base 3 has a mounting cavity therein, the first circuit board 10 of the power transmission module 1 is mounted in the base 3, and the base 3 can protect the power transmission module 1 and the distance measurement module 2.

In another embodiment of the present invention, as shown in fig. 1 to 3, the lidar system further includes an upper cover 4, and the upper cover 4 covers the distance measuring module 2. Moreover, upper cover 4 and base 3 lid are in the same place to hide and accomodate in the common cavity that forms of base 3 and upper cover 4 with passing electric power module 1 and range finding module 2, play guard action such as waterproof, dustproof.

In another embodiment of the utility model the lidar system is provided with a data interface 5 connected to the control circuit board for enabling data transfer between the lidar system and external devices. The base 3 is provided with a connection hole 301 corresponding to the data interface 5. In the illustrated embodiment, the connection hole 301 is located in a side wall of the base 3. The data interface 5 can adopt various existing data interfaces, such as ZH1.5T-4P 1.5mm connector, USB interface and Type-C interface.

The laser radar system provided by the utility model adopts the power transmission module 1, the first circuit board 10 of the power transmission module 1 integrates the first coil 12 and the stator winding 11, the second circuit board 20 integrates the second coil 22 and the rotor magnet 21, and the stator winding 11 and the rotor magnet 21 form a motor which can be used for driving the distance measurement module 2 to rotate. The cooperation of the first coil 12 and the second coil 22 realizes the electricity transmission effect, and specifically includes providing the electric quantity for the distance measurement module 2, the first circuit board 10 and the second circuit board 20 and realizing the data exchange of distance measurement. Compare in prior art like this, because the vertical height of first circuit board 10 and second circuit board 20 itself is low, and directly integrate the part of multiple functions such as stator winding 11, rotor magnet 21, first coil 12, second coil 22 on the circuit board through integrated mode, not only be favorable to reducing laser radar system overall structure's vertical height, reduce laser radar system's volume, can reduce the structure quantity moreover, reduce the assembly process complexity, reduce the manufacturing cost of radar simultaneously.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An electricity transmission power module, comprising:

the first circuit board is integrated with a stator winding and a first coil;

the second circuit board is integrated with a second coil, and the first coil and the second coil are oppositely arranged;

and the rotor magnet is used for driving the second circuit board to rotate, and the stator winding and the rotor magnet are oppositely arranged.

2. The power transmission module as claimed in claim 1, wherein the first circuit board and the second circuit board are disposed in parallel, and a surface of the first circuit board on which the stator winding and the first coil are integrated is disposed opposite to a surface of the second circuit board on which the second coil is integrated.

3. The power transmission module of claim 1 wherein the first coil is located at an outer periphery of the stator winding;

alternatively, the stator winding is located at an outer periphery of the first coil.

4. The power transmission module as claimed in any one of claims 1 to 3, wherein the first circuit board is provided with a code, and the code is arranged around the periphery of the stator winding or the periphery of the first coil.

5. The power transmission module according to any one of claims 1 to 3, further comprising a rotating bracket, wherein the second circuit board is fixedly mounted on the rotating bracket, and the rotating bracket rotates along with the second circuit board under the driving of the stator winding.

6. The power transmission module as claimed in claim 5, wherein the second circuit board is fixedly mounted on the lower surface of the rotating bracket.

7. The electro-kinetic module of claim 1, wherein the rotor magnet has a plurality of poles, the stator winding has a plurality of winding coils, and the number of poles is not equal to the number of winding coils.

8. The electro-kinetic module of claim 1, wherein the stator windings are polygonal or circular in shape.

9. A lidar system comprising a range module and an electric power transmission module according to any of claims 1 to 8;

the electric power transmission module is used for supplying power to the ranging module and driving the ranging module to rotate.

10. The lidar system of claim 9, wherein the lidar system comprises a base, the first circuit board mounted to the base;

and/or, the laser radar system includes the upper cover, the upper cover lid is located on the range finding module.

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