A lidar module with easy heat dissipation

Abstract

This invention relates to the field of electrical connection heat dissipation technology, specifically a heat-dissipating lidar module, comprising a lidar body, a board-end connector, and a wire-end connector. The lidar body houses a data processing unit and a laser transceiver unit. The board-end connector is fixedly mounted on the lidar body's housing and electrically connected to the data processing unit and the laser transceiver unit. The wire-end connector is used to interlock with the board-end connector to establish a data communication and power transmission channel between the lidar body and external devices. This invention combines efficient heat dissipation design with highly reliable sealing technology, ensuring the lidar module's interface protection against extreme environments while improving its thermal management performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric connection heat dissipation, in particular to a laser radar module facilitating heat dissipation. BACKGROUND

[0002] As the core sensor of automatic driving and environmental perception, the performance of laser radar is directly related to the safety and reliability of intelligent networked vehicles. With the improvement of automatic driving level, the requirements for detection accuracy, resolution and frame rate of laser radar are increasingly demanding, which leads to a significant increase in power consumption and heat generation of the internal data processing unit and laser transceiver unit of the laser radar. Especially in the harsh vehicle environment, the laser radar needs to work continuously for a long time, and if the internal accumulated heat cannot be dissipated in time, it will cause performance degradation, signal drift and even permanent damage to the components, which seriously restricts the reliability and service life of the laser radar.

[0003] The heat dissipation design of the traditional laser radar module is mostly focused on the body shell, such as adding heat dissipation fins or fans, but the interface area of the module and the external wire harness connection, which is also a key heat source and potential heat bottleneck, is often overlooked. Inside the connector, especially the power terminals and high-speed data terminals that transmit large currents, the contact resistance generated Joule heat cannot be ignored. In addition, the vehicle environment requires the connector to have extremely high sealing performance (such as IP67 and above) to resist the intrusion of water vapor, dust and chemical corrosive substances. However, the conventional sealing structure (such as simply pressing the rubber ring) can meet the protection requirements, but it greatly hinders the axial conduction of heat, and there is a difficult balance between heat dissipation and sealing.

[0004] On the other hand, the vehicle space layout is extremely compact, requiring the connector to have small size, high density integration and electromagnetic interference resistance. In the existing scheme, the power and signal terminals are often centrally located, which can easily lead to heat concentration and electromagnetic interference, and lack of systematic heat management paths from internal chips to the external environment. Therefore, an innovative laser radar module connection scheme is needed, which can effectively solve the heat dissipation problem without sacrificing the sealing performance and compactness of the connector, to meet the comprehensive requirements of thermal reliability, environmental adaptability and integration of the next generation of high-power vehicle-mounted laser radar. SUMMARY

[0005] To solve the above problems, the present application combines efficient heat dissipation design with high reliability sealing technology, ensuring the extreme environmental protection capability of the laser radar module interface while improving its heat management performance.

[0006] The technical solution adopted in this invention is: a heat-dissipating lidar module, comprising a lidar body, a board-end connector, and a wire-end connector. The lidar body houses a data processing unit and a laser transceiver unit. The board-end connector is fixedly mounted on the housing of the lidar body and electrically connected to the data processing unit and the laser transceiver unit. The wire-end connector is used to mate with the board-end connector to establish a data communication and power transmission channel between the lidar body and external devices. The board-end connector includes a board-end housing, power pins, a signal connection component, and a power connection fixing component. The board-end housing is provided with a plug connector. The head is provided with a first insertion compartment and a second insertion compartment. The power pin is disposed in the first insertion compartment, and the signal connection component is disposed in the second insertion compartment. The mounting surface of the board end shell that contacts the housing of the lidar body is provided with a sealing structure. The wire end connector includes a wire end shell, a signal connection component, and a power connection component. The wire end shell has a first cavity and a second cavity arranged side by side along the insertion direction. The signal connection component is disposed in the first cavity, and the power connection component is disposed in the second cavity. The insertion end of the wire end shell is provided with a mating cavity that matches the plug, and a front end seal is provided in the mating cavity.

[0007] The plate end shell and / or the wire end shell are made of thermally conductive material. The mounting surface of the plate end shell is in thermally conductive contact with the housing of the lidar body. The heat generated inside the lidar body can be conducted and dissipated through the plate end shell and / or the connector assembly after mating.

[0008] A further improvement to the above solution is that the mounting surface of the plate end shell is provided with a mounting panel, the mounting panel has a sealing groove, and a sealing ring is provided in the sealing groove; the mounting panel is fixed to the housing of the lidar body by fasteners passing through the mounting holes thereon, and the sealing and thermal contact between the mounting panel and the housing is achieved by compressing the sealing ring.

[0009] A further improvement to the above solution is that the mating surface of the mounting panel is also provided with a positioning pin, and a corresponding positioning hole is provided on the housing of the lidar body. The positioning pin and the positioning hole cooperate to achieve pre-positioning of the installation, ensuring accurate alignment and tight thermal contact between the plate end shell and the housing.

[0010] A further improvement to the above solution is that a fixing groove is provided in the fixing part of the board end shell, and the power connection fixing member is disposed in the fixing groove; one end of the power pin and the signal power connection assembly extends to the first plug compartment and the second plug compartment respectively, and the other end passes through and is fixed to the power connection fixing member; the power connection fixing member is made of insulating and thermally conductive material, which can conduct the heat generated when the terminal is working to the board end shell.

[0011] A further improvement to the above solution is that the signal power connection assembly includes a shielding sleeve and a signal terminal. One end of the shielding sleeve is inserted into the shielding slot of the second insertion compartment, and the signal terminal is disposed in the shielding sleeve with one end inserted into the signal slot. The shielding sleeve is provided with an arc-shaped spring piece, and the arc-shaped spring piece is provided with a shielding pin. The power connection fixing component is correspondingly provided with an arc-shaped slot. The arc-shaped spring piece is sequentially inserted into the shielding slot and the arc-shaped slot. The shielding pin is soldered to the grounding terminal of the PCB board of the lidar module to form an electromagnetic shielding and auxiliary heat dissipation path.

[0012] A further improvement to the above solution is that the tail portions of the first cavity and the second cavity of the wire connector are respectively provided with an independent first rear end sealing component and a second rear end sealing component, which are used to seal the signal connection line and the power connection line respectively; the front end seal forms a seal with the outer periphery of the plug of the board connector when the wire connector and the board connector are mated, together constituting multiple sealing protections for the interface end of the lidar module.

[0013] A further improvement to the above solution is that the power connection assembly of the wire-end connector includes a terminal fixing component, a mating fixing component, and a power terminal, wherein the power terminal is disposed within the terminal fixing component; the terminal fixing component is made of a thermally conductive and insulating material, and a portion thereof is exposed outside the wire-end housing; when mated, the exposed portion contacts the inner wall or surrounding structure of the first insertion compartment of the board-end connector, assisting in dissipating the heat generated by the large current transmission from the wire end.

[0014] A further improvement to the above solution is that a guide partition is provided between the first and second plug-in compartments of the board-end connector, and a guide slope is provided on the side of the guide partition facing the first plug-in compartment to guide the plugging and isolate the power and signal areas, thereby reducing mutual interference between heat sources.

[0015] A further improvement to the above solution is that the thermally conductive material used for the plate end shell and the wire end shell is one of thermally conductive engineering plastic, die-cast aluminum alloy, or composite material with metal inserts.

[0016] A further improvement to the above solution is that the housing of the lidar body is provided with heat dissipation teeth or a thermally conductive coating in the area that contacts the mounting surface of the board connector.

[0017] The beneficial effects of this invention are:

[0018] Compared to existing lidar connections, this invention utilizes thermally conductive materials to manufacture the board-end housing and / or wire-end housing, ensuring good thermal contact between the board-end housing mounting surface and the lidar body housing. This creates an efficient heat conduction path from the lidar's internal core heat-generating units (data processing unit, laser transceiver unit) to the external environment. This not only effectively dissipates the large amount of heat generated by the lidar itself during operation but also provides auxiliary heat dissipation to the connector assembly after insertion, effectively reducing the internal operating temperature of the module. This prevents performance degradation, component aging, or failure due to overheating, and improves the reliability and lifespan of the lidar under long-term, high-load conditions.

[0019] The board-end housing achieves a sealed connection with the LiDAR housing through a sealing structure on its mounting surface, while the wire-end connector forms an interface seal with the board-end connector through a front-end seal within the cavity. This provides multi-layered, high-level sealing protection for the LiDAR module's external interface, effectively resisting the intrusion of common contaminants in the automotive environment such as moisture, dust, and oil, meeting IP67 or higher protection requirements, and ensuring the stability of data transmission and the safety of internal circuitry in harsh environments. Power transmission (through power pins and power connection components) and high-speed data communication (through signal power connection components and signal connection components) are highly integrated into the compact board-end and wire-end connectors, employing a compartmentalized (first / second connector compartment, first / second cavity) isolation layout. This saves valuable internal space for the LiDAR, optimizes the PCB layout, conforms to the trend of miniaturization and high-density integration in automotive electronics, and the physical isolation effectively reduces electromagnetic interference from high-current power supplies to high-speed data signals, ensuring the integrity and stability of automotive Ethernet communication.

[0020] This invention combines efficient heat dissipation design with high-reliability sealing technology, which not only ensures the protection capability of the lidar module interface in extreme environments, but also improves its thermal management performance. It provides an effective solution to the heat dissipation problem of high-power automotive lidar, and has the advantages of compact structure, strong anti-interference and easy assembly. It perfectly meets the stringent requirements of automotive electronics for high-performance sensors in terms of reliability, durability and environmental adaptability. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the heat dissipation-friendly lidar module of the present invention; Figure 2 for Figure 1An exploded view of a lidar module designed for efficient heat dissipation. Figure 3 for Figure 1 A side view of a lidar module designed for easy heat dissipation; Figure 4 for Figure 1 A three-dimensional schematic diagram of the board-end connector of the lidar module for easy heat dissipation; Figure 5 for Figure 4 Exploded view of the connector at the middle plate end; Figure 6 for Figure 4 An exploded view of the mid-plate connector from another perspective; Figure 7 for Figure 1 A three-dimensional schematic diagram of the wire-end connector of a lidar module for easy heat dissipation; Figure 8 for Figure 7 Exploded view of the centerline connector; Figure 9 for Figure 7 An exploded view of the centerline connector from another perspective.

[0022] Figure labeling: LiDAR body 1; Board-end connector 2, board-end housing 21, mounting panel 211, sealing groove 212, sealing ring 213, mounting hole 214, positioning pin 215, fixing groove 216, power pin 22, signal power connection assembly 23, shielding sleeve 231, arc-shaped spring 2311, shielding pin 2312, signal terminal 232, power connection fixing component 24, arc-shaped slot 241, plug connector 25, first plug compartment 251, guide partition 2511, second plug compartment 252; 3. Wire connector, 31. Wire housing, 311. First cavity, 312. Second cavity, 313. Mating cavity, 314. Front seal, 315. Signal connection assembly, 32. Power connection assembly, 33. Terminal fixing member, 331. Mating fixing member, 332. Power terminal, 333. First rear sealing assembly, 34. Second rear sealing assembly, 35. Signal connection line, 36. Power connection line, 37. Detailed Implementation

[0023] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0024] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] like Figures 1-9 As shown, in one embodiment of the present invention, a heat-dissipating lidar module is provided, including a lidar body 1, a board-end connector 2, and a wire-end connector 3. The lidar body 1 houses a data processing unit and a laser transceiver unit. The board-end connector 2 is fixedly mounted on the housing of the lidar body 1 and electrically connected to the data processing unit and the laser transceiver unit. The wire-end connector 3 is used to interlock with the board-end connector 2 to establish a data communication and power transmission channel between the lidar body 1 and external devices. The board-end connector 2 includes a board-end housing 21, a power pin 22, a signal connection component 23, and a power connection fixing component 24. The board-end housing 21 is provided with a connector 25, and the connector 25 contains a first connector compartment 251 and a... The second insertion compartment 252, the power pin 22 is disposed in the first insertion compartment 251, and the signal connection component 23 is disposed in the second insertion compartment 252; the mounting surface of the board end housing 21 that contacts the housing of the lidar body 1 is provided with a sealing structure; the wire end connector 3 includes a wire end housing 31, a signal connection component 32 and a power connection component 33, the wire end housing 31 has a first cavity 311 and a second cavity 312 arranged side by side along the insertion direction, the signal connection component 32 is disposed in the first cavity 311 and the power connection component 33 is disposed in the second cavity 312; the insertion end of the wire end housing 31 is provided with a mating cavity 313 that matches the plug 25, and a front end seal 314 is provided in the mating cavity 313.

[0027] The plate end housing 21 and / or the wire end housing 31 are made of thermally conductive material. The mounting surface of the plate end housing 21 is in thermally conductive contact with the housing of the lidar body 1. The heat generated inside the lidar body 1 can be conducted and dissipated through the plate end housing 21 and / or the connector assembly after mating.

[0028] This embodiment utilizes thermally conductive materials to manufacture the board-end housing 21 and / or the wire-end housing 31, ensuring good thermal conductivity between the mounting surface of the board-end housing 21 and the lidar body 1 housing. This creates an efficient heat conduction path from the core heat-generating units (data processing unit, laser transceiver unit) inside the lidar to the external environment. This not only effectively dissipates the large amount of heat generated by the lidar itself during operation but also provides auxiliary heat dissipation to the connector assembly after insertion, effectively reducing the internal operating temperature of the module. This prevents performance degradation, component aging, or failure due to overheating, and improves the reliability and lifespan of the lidar under long-term, high-load conditions. The board-end housing 21 achieves a sealed connection with the lidar housing through its sealing structure on the mounting surface, while the wire-end connector 3 forms an interface seal with the board-end connector 25 through the front-end seal 314 within the insertion cavity 313. The external interface of the LiDAR module is provided with multi-layered, high-level sealing protection, which can effectively resist the intrusion of common pollutants such as water vapor, dust, and oil in the automotive environment, meeting the protection requirements of IP67 or higher, and ensuring the stability of data transmission and the safety of internal circuitry of the LiDAR in harsh environments. Power transmission (via power pin 22 and power connection component 33) and high-speed data communication (via signal connection component 23 and signal connection component 32) are highly integrated into a compact board-end and line-end connector 3, and a compartmentalized (first / second connector compartment 252, first / second cavity 312) isolation layout is adopted. This saves valuable internal space of the LiDAR, optimizes the PCB layout, conforms to the trend of miniaturization and high-density integration in automotive electronics, and the physical isolation effectively reduces the electromagnetic interference of high power current on high-speed data signals, ensuring the integrity and stability of automotive Ethernet communication.

[0029] This embodiment combines efficient heat dissipation design with high-reliability sealing technology, which not only ensures the extreme environmental protection capability of the LiDAR module interface, but also improves its thermal management performance. It provides an effective solution to the heat dissipation problem of high-power automotive LiDAR, and has the advantages of compact structure, strong anti-interference and easy assembly. It perfectly meets the stringent requirements of automotive electronics for high-performance sensors in terms of reliability, durability and environmental adaptability.

[0030] See Figures 4-6As shown, the mounting surface of the plate-end housing 21 is provided with a mounting panel 211. A sealing groove 212 is formed on the mounting panel 211, and a sealing ring 213 is disposed within the sealing groove 212. The mounting panel 211 is fixed to the housing of the lidar body 1 by fasteners passing through mounting holes 214 on it. Compression of the sealing ring 213 achieves sealing and thermal conductivity between the mounting panel 211 and the housing. This embodiment, by providing a mounting panel 211 with a sealing groove 212 and a sealing ring 213, along with matching mounting holes 214 and fasteners, integrates multiple functions such as mechanical fixation, environmental sealing, and efficient heat conduction between the plate-end housing 21 and the lidar body 1 housing. The pressure applied by the fasteners ensures a tight mechanical contact between the mounting panel 211 and the housing surface, providing a low thermal resistance path for heat conduction from the housing to the plate-end housing 21. Simultaneously, the pressure causes the sealing ring 213 to undergo elastic deformation, fully filling the microscopic unevenness between the mounting panel 211 and the housing, forming a reliable environmental seal and effectively preventing water vapor, dust, and other contaminants from entering the lidar from the mounting interface. By combining the good contact required for heat dissipation with the compression deformation required for sealing in the same structure, the assembly process is simplified, and heat dissipation efficiency is improved while ensuring IP-level protection.

[0031] The mounting panel 211 also has a positioning pin 215 on its mating surface. A corresponding positioning hole is provided on the housing of the lidar body 1. The positioning pin 215 engages with the positioning hole to achieve pre-positioning during installation, ensuring accurate alignment and tight thermal contact between the board-end outer shell 21 and the housing. This embodiment achieves precise pre-positioning of the board-end connector 2 during installation by adding a positioning pin 215 to the mounting panel 211 and providing a corresponding positioning hole on the lidar housing. Before tightening the fasteners, the engagement of the positioning pin 215 with the positioning hole automatically corrects the circumferential and radial position of the board-end outer shell 21, effectively preventing the risk of local over-compression or under-compression of the sealing ring 213, or even shear damage, due to misalignment. This ensures the reliability and consistency of the seal, and more importantly, ensures maximum flat contact between the mounting panel 211 and the housing, reducing assembly stress caused by assembly deviations and optimizing the thermal conductivity of the thermal interface, laying a solid foundation for stable and efficient thermal management.

[0032] A fixing groove 216 is provided in the fixing part of the board end housing 21, and the power connection fixing member 24 is disposed in the fixing groove 216. One end of the power pin 22 and the signal power connection assembly 23 extends to the first plug-in compartment 251 and the second plug-in compartment 252, respectively, and the other end passes through and is fixed to the power connection fixing member 24. The power connection fixing member 24 is made of insulating and thermally conductive material, which can conduct the heat generated by the terminal during operation to the board end housing 21. In this embodiment, the power connection fixing member 24 is disposed in the fixing part groove, which serves as the basis for centralized fixing and electrical insulation of the power pin 22 and the signal power connection assembly 23. The heat generated by the power pin 22 and the signal terminal during operation due to contact resistance and Joule effect can be directly transferred to the power connection fixing member 24, and then efficiently conducted to the entire board end housing 21 through its contact interface with the fixing groove 216 of the board end housing 21. The internal heat source is directly incorporated into the active heat dissipation path, which avoids heat accumulation inside the connector and temperature rise, thereby protecting the performance of the terminal itself and maintaining stable contact resistance.

[0033] The signal power connection assembly 23 includes a shielding sleeve 231 and a signal terminal 232. One end of the shielding sleeve 231 is inserted into the shielding slot of the second insertion compartment 252. The signal terminal 232 is disposed within the shielding sleeve 231, with one end inserted into the signal slot. An arc-shaped spring piece 2311 is provided on the shielding sleeve 2311, and a shielding pin 2312 is provided on the arc-shaped slot 241 corresponding to the power connection fixing member 24. The arc-shaped spring piece 2311 is sequentially inserted into the shielding slot and the arc-shaped slot 241. The shielding pin 2312 is soldered to the grounding terminal of the PCB board of the lidar module, forming an electromagnetic shielding and auxiliary heat dissipation path. In this embodiment, the shielding and heat dissipation of the signal power connection assembly 23 are integrated. The shielding sleeve 231, through the arc-shaped spring 2311 and the shielding pin 2312, not only provides excellent electromagnetic shielding, isolating the signal terminal 232 from external interference, but also constructs an additional heat dissipation and grounding path. The arc-shaped spring 2311 is inserted into both the shielding slot and the arc-shaped slot 241 of the power connection fastener 24, providing mechanical fixation and electrical connection, while the shielding pin 2312 is soldered to the PCB ground layer, achieving low-impedance grounding. This allows a portion of the heat generated during signal transmission, as well as the heat conducted from the power connection fastener 24, to be rapidly dissipated through the shielding layer to the grounding copper foil of the PCB, utilizing the PCB's heat dissipation capacity. This achieves a synergistic improvement in electromagnetic compatibility (EMC) performance and thermal management performance.

[0034] See Figures 7-9As shown, the tail portions of the first cavity 311 and the second cavity 312 of the line connector 3 are respectively provided with independent first rear end sealing components 34 and second rear end sealing components 35, used to seal the signal connection line 36 and the power connection line 37 respectively; the front end sealing component 314 forms a seal with the outer periphery of the plug 25 of the board end connector 2 when the line connector 3 and the board end connector 2 are mated, together forming a multi-layer sealing protection at the interface end of the lidar module. This embodiment improves the comprehensive sealing strategy of the lidar module interface. At the line end, the independent first and second rear end sealing components 35 respectively seal the signal line and the power line, solving the problem of leakage prevention between the cable and the connector. At the interface end, the front end sealing component 314 forms a tight seal with the outer periphery of the board end plug 25. The two sealing lines, combined with the sealing of the board end mounting surface, together constitute a "multi-layer sealing protection". It ensures the complete sealing of the entire electrical connection channel (from external cables to internal PCB), which can withstand the test of extreme vehicle environment such as high-pressure water gun washing and long-term water immersion, and provides the highest level of environmental protection (such as IP6K9K) for the core electronic components of lidar, ensuring its long-term reliability under all-weather conditions.

[0035] The power connection assembly 33 of the wire-end connector 3 includes a terminal fixing member 331, a mating fixing member 332, and a power terminal 333. The power terminal 333 is disposed within the terminal fixing member 331. The terminal fixing member 331 is made of thermally conductive and insulating material, and a portion of it is exposed outside the wire-end housing 31. When mated, the exposed portion contacts the inner wall or surrounding structure of the first insertion compartment 251 of the board-end connector 2, assisting in dissipating the heat generated by high-current transmission from the wire end. This embodiment provides a specific heat dissipation solution for the high-current heat generation problem of the power connection assembly 33. The power terminal 333 is the main heat source of the wire-end connector 3. By using thermally conductive and insulating material to manufacture the terminal fixing member 331 and designing a portion of it to be exposed outside the wire-end housing 31, a direct heat conduction outlet is created. When the wire end and the board end are mated, this exposed portion directly contacts the relatively low-temperature inner wall or surrounding structure of the first insertion compartment 251 of the board-end connector 2, which serves as the main heat sink, forming an efficient thermal bridge from the power terminal 333 to the board-end housing 21. It can directly conduct the Joule heat generated by high current transmission from the wire end, effectively reducing the temperature of the power terminal 333 and the surrounding area, preventing problems such as increased contact resistance, terminal oxidation, or even thermal aging of plastic parts due to excessive temperature rise, and greatly improving the stability and current carrying capacity of the power transmission path.

[0036] A guide partition 2511 is provided between the first insertion compartment 251 and the second insertion compartment 252 of the board-end connector 2. The guide partition 2511 has a guide slope on the side facing the first insertion compartment 251, which is used to guide the insertion and isolate the power and signal areas, reducing mutual interference between heat sources. In this embodiment, by providing a guide partition 2511 with a guide slope between the first and second insertion compartments 252, the dual functions of physical isolation and insertion guidance are achieved. Physical isolation separates the power area (first insertion compartment 251) from the signal area (second insertion compartment 252), reducing the interference of the electromagnetic field generated by the power pin 22 during operation on the high-speed differential signal and ensuring signal integrity. At the same time, the guide slope can accurately guide the plug of the wire-end connector 3 into the correct cavity during the insertion process, avoiding misinsertion and damage to the delicate signal terminal 232. From a heat dissipation perspective, this isolation also prevents the power supply section (high-temperature area) and the signal section (more sensitive to temperature) from having mutual thermal influence, avoiding direct radiation and convection of heat, which is conducive to local temperature control of the signal area and improves the overall thermal management effect of the module.

[0037] The thermally conductive materials used for the plate end housing 21 and the wire end housing 31 are one of the following: thermally conductive engineering plastics, die-cast aluminum alloys, or composite materials with metal inserts. This embodiment specifically specifies three types of thermally conductive materials that can be used for the housing, providing clear and diverse choices for implementation. Thermally conductive engineering plastics have good insulation, processability, and certain thermal conductivity, making them suitable for lightweight and cost-sensitive applications. Die-cast aluminum alloys have extremely high thermal conductivity and structural strength, serving as efficient heat sinks suitable for high heat load scenarios. Composite materials with metal inserts combine the ease of molding of plastics with the high thermal conductivity of metals, enabling directional heat conduction in complex structures. This allows for the selection of the optimal material solution based on the specific heat dissipation requirements, weight limitations, cost targets, and manufacturing processes of the lidar, ensuring the best balance between heat dissipation performance and other product requirements.

[0038] The housing of the lidar body 1 has heat dissipation fins or a thermally conductive coating in the area where it contacts the mounting surface of the board-end connector 2. This embodiment optimizes the heat dissipation structure of the lidar body 1 housing to improve the final dissipation of heat introduced from the board-end connector 2. The heat dissipation fins in the area where the housing contacts the board-end mounting surface increase the heat dissipation surface area, enhancing convective heat transfer efficiency by utilizing airflow during operation (air cooling), thus dissipating heat into the environment more quickly. Using a thermally conductive coating (such as a high-emissivity ceramic coating) further enhances the thermal radiation capability of the housing surface. This enhanced heat dissipation design at the housing level, combined with the thermally conductive design at the connector level, forms a complete and efficient heat dissipation chain from the internal chip → housing → board-end connector 2 → housing heat dissipation structure → environment, solving the critical problem of heat dissipation after exhaustion.

[0039] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A lidar module with convenient heat dissipation, characterized in that: include The lidar body contains a data processing unit and a laser transceiver unit. A board-end connector is fixedly mounted on the housing of the lidar body and electrically connected to the data processing unit and the laser transceiver unit. A wire-end connector is used to mate with the board-end connector to establish a data communication and power transmission channel between the lidar body and external devices; The board-end connector includes a board-end housing, a power pin, a signal connection component, and a connection fixing component. The board-end housing is provided with a plug, and the plug is provided with a first plug compartment and a second plug compartment. The power pin is disposed in the first plug compartment, and the signal connection component is disposed in the second plug compartment. The mounting surface of the board-end housing that contacts the housing of the lidar body is provided with a sealing structure. The wire connector includes a wire housing, a signal connection component, and a power connection component. A first cavity and a second cavity are arranged side by side along the insertion direction inside the wire housing. The signal connection component is disposed in the first cavity, and the power connection component is disposed in the second cavity. The insertion end of the wire housing is provided with a mating cavity that matches the plug, and a front sealing element is provided in the mating cavity. The plate end shell and / or the wire end shell are made of thermally conductive material. The mounting surface of the plate end shell is in thermally conductive contact with the housing of the lidar body. The heat generated inside the lidar body can be conducted and dissipated through the plate end shell and / or the connector assembly after mating.

2. The heat-dissipating lidar module according to claim 1, characterized in that: The mounting surface of the plate end shell is provided with a mounting panel, and a sealing groove is provided on the mounting panel. A sealing ring is provided in the sealing groove. The mounting panel is fixed to the housing of the lidar body by fasteners passing through the mounting holes thereon, and the sealing and thermal contact between the mounting panel and the housing is achieved by compressing the sealing ring.

3. The heat-dissipating lidar module according to claim 2, characterized in that: The mounting panel is also provided with a positioning pin on its mating surface, and a corresponding positioning hole is provided on the housing of the lidar body. The positioning pin and the positioning hole cooperate to achieve pre-positioning of the installation, ensuring accurate alignment and tight thermal contact between the plate end shell and the housing.

4. The heat-dissipating lidar module according to claim 1, characterized in that: A fixing groove is provided in the fixing part of the board end shell, and the power connection fixing member is disposed in the fixing groove; one end of the power pin and the signal power connection assembly extends to the first plug compartment and the second plug compartment respectively, and the other end passes through and is fixed to the power connection fixing member; the power connection fixing member is made of insulating and heat-conducting material, which can conduct the heat generated when the terminal is working to the board end shell.

5. The heat-dissipating lidar module according to claim 4, characterized in that: The signal power connection assembly includes a shielding sleeve and a signal terminal. One end of the shielding sleeve is inserted into the shielding slot of the second insertion compartment. The signal terminal is disposed inside the shielding sleeve and one end is inserted into the signal slot. The shielding sleeve is provided with an arc-shaped spring piece, and the arc-shaped spring piece is provided with a shielding pin. The power connection fixing component is provided with an arc-shaped slot. The arc-shaped spring piece is sequentially inserted into the shielding slot and the arc-shaped slot. The shielding pin is soldered to the grounding terminal of the PCB board of the lidar module to form an electromagnetic shielding and auxiliary heat dissipation path.

6. The heat-dissipating lidar module according to claim 1, characterized in that: The first cavity and the tail of the second cavity of the wire connector are respectively provided with an independent first rear end sealing component and a second rear end sealing component, which are used to seal the signal connection line and the power connection line respectively; the front end seal forms a seal with the outer periphery of the plug of the board end connector when the wire connector and the board end connector are mated, together forming a multi-layer sealing protection for the interface end of the lidar module.

7. The heat-dissipating lidar module according to claim 1, characterized in that: The power connection assembly of the wire connector includes a terminal fixing member, a mating fixing member, and a power terminal, wherein the power terminal is disposed within the terminal fixing member; the terminal fixing member is made of thermally conductive and insulating material, and a portion thereof is exposed outside the wire connector housing; When the wires are inserted, the exposed portion contacts the inner wall or surrounding structure of the first insertion compartment of the board connector, which helps to dissipate the heat generated by the high current transmission from the wire end.

8. The heat-dissipating lidar module according to claim 1, characterized in that: A guide partition is provided between the first and second plug-in compartments of the board-end connector. The guide partition has a guide slope on the side facing the first plug-in compartment to guide the plugging and isolate the power and signal areas, thereby reducing mutual interference between heat sources.

9. The heat-dissipating lidar module according to claim 1, characterized in that: The thermally conductive material used for the plate end shell and the wire end shell is one of thermally conductive engineering plastic, die-cast aluminum alloy, or composite material with metal inserts.

10. The heat-dissipating lidar module according to claim 1, characterized in that: The housing of the lidar body has heat dissipation teeth or a thermally conductive coating in the area that contacts the mounting surface of the board connector.

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