A mobile robot-oriented three-proofing detachable battery module

Abstract

The application provides a kind of three-proofing detachable battery module for mobile robot, including shell, battery socket board, battery cell, inner protection plate and charging circuit board are arranged in shell, battery connector female seat passing through shell is arranged on battery socket board, inner protection plate is between battery cell and charging circuit board;The upper end and side of shell are provided with opening structure, the cover plate made of metal material is arranged at the opening structure, the cover plate is in the shape of a Chinese character, including horizontal plate part and vertical plate part at both ends of horizontal plate part, fin structure is arranged on vertical plate part, and heat-conducting silicone grease is filled between charging circuit board and horizontal plate part of cover plate;Battery switch and charging interface are arranged on horizontal plate part of cover plate, battery cell and charging interface are electrically connected with charging circuit board, and battery cell and battery socket board are electrically connected with battery switch.The application provides a kind of three-proofing detachable battery module for mobile robot, which has high reliability, high durability and high-efficiency heat dissipation advantages.

Description

Technical Field

[0001] This invention relates to the field of lithium battery application technology, specifically to a rugged, detachable battery module for mobile robots. Background Technology

[0002] With the widespread application of mobile robots in industrial manufacturing, logistics, resource exploration, and other fields, batteries, as their core functional module, have become a focus of research and application. As technology advances and application scenarios diversify, mobile robots are placing higher demands on the reliability, flexibility, and adaptability of their energy supply. Especially in outdoor and industrial environments, robots may face multiple challenges such as humidity, dust, vibration, and shock, and the protective performance of traditional batteries is insufficient to meet these challenges. Furthermore, the non-replaceability of traditional batteries not only limits the robot's continuous operating capability and flexibility but also shortens its lifespan. Particularly under extreme working conditions, there is an even more urgent need for improved battery protection and convenient replacement.

[0003] Rugged, dustproof, and shockproof batteries, as a battery solution with waterproof, dustproof, and shockproof functions, are gaining increasing attention in the mobile robot power supply field due to their stability and reliability in harsh working environments. To achieve waterproof and dustproof performance, batteries typically employ special polymer materials and sealed structural designs, effectively preventing moisture and dust from entering the battery and its internal circuitry, thus reducing the risk of corrosion and short circuits. To meet shockproof requirements, the battery casing usually uses special shock-absorbing materials and structural designs, effectively absorbing external vibrations and impacts to prevent leakage, short circuits, and other safety hazards. Simultaneously, the removable design of the battery, through the addition of electrical and mechanical connection interfaces, allows users to easily replace old or depleted batteries, facilitating battery inspection and replacement, saving on robot operation and maintenance costs, and enhancing continuous operation capabilities.

[0004] However, although rugged removable batteries have begun to be used in the field of mobile robotics, they still face many challenges in practical engineering applications. To meet waterproof and dustproof requirements, rugged batteries typically employ a sealed casing design, but this design restricts airflow, leading to reduced battery heat dissipation efficiency and affecting its discharge efficiency and lifespan. Furthermore, the switches and charging ports on removable batteries are exposed to the external environment, making them susceptible to moisture and dust corrosion. Simultaneously, frequent plugging and unplugging of the charging port between the charging device and the robot can cause tensile deformation of nearby structures and protective components, thus weakening their sealing effect. Additionally, unstable battery interface connections may lead to poor contact; incorrect or reversed insertion during plugging and unplugging can also pose safety hazards. Summary of the Invention

[0005] This invention addresses the significant shortcomings of traditional battery modules in mobile robot applications: low reliability, susceptibility to damage, and short lifespan under complex operating conditions such as humidity, dust, and vibration; and the complex design of traditional built-in batteries, making maintenance and replacement difficult and failing to meet the maintainability requirements of mobile robots. To solve these problems, this invention proposes a rugged, detachable battery module for mobile robots that combines high reliability, high durability, and efficient heat dissipation.

[0006] This invention is implemented as follows: A rugged, detachable battery module for mobile robots includes a housing. The housing houses a battery socket plate, battery cells, an inner protective plate, and a charging circuit board. The battery socket plate has a battery connector female that passes through the housing. The inner protective plate is located between the battery cells and the charging circuit board. The housing has openings on its upper end and sides, each with a cover plate made of metal. The cover plate has a U-shaped structure, including a horizontal plate and vertical plates at both ends of the horizontal plate. Heat sinks are installed on the vertical plates. Thermally conductive silicone grease is filled between the charging circuit board and the horizontal plate of the cover plate. A battery switch and a charging interface are located on the horizontal plate of the cover plate. The battery cells and the charging interface are electrically connected to the charging circuit board, and the battery cells and the battery socket plate are electrically connected to the battery switch.

[0007] Furthermore, the housing includes a bottom protective cover and an upper protective cover. The opening structure is provided on the upper protective cover, and a mounting frame is provided at the lower end of the upper protective cover. The battery cell is mounted on the mounting frame. The lower end of the bottom protective cover is sealed, and the upper end is open. The upper protective cover is located at the upper port of the bottom protective cover, and the lower end of the mounting frame is inserted into the bottom protective cover.

[0008] Furthermore, the width of the upper protective cover in the front-to-back direction is greater than the width of the bottom protective cover in the front-to-back direction. A snap-fit ​​structure is provided in the middle of each of the front and rear sides of the upper protective cover. The snap-fit ​​structure is used to snap into the battery mounting cavity provided on the robot to realize the power supply connection between the battery module and the robot.

[0009] Furthermore, the buckle structure is made of nylon material and includes an integrally formed U-shaped snap-fit ​​part and an arc-shaped pressing part. The arc-shaped pressing part is located above the U-shaped snap-fit ​​part, and the inner side of the arc-shaped pressing part is a cavity. Multiple anti-slip arc-shaped protrusions are arranged sequentially from top to bottom on the outer wall of the arc-shaped pressing part.

[0010] Furthermore, the upper end of the bottom protective cover is provided with a mounting groove for mounting the battery socket plate, and both the mounting groove and the battery socket plate are rectangular ring-shaped; the bottom wall of the mounting groove is provided with a through hole structure for the battery connector female to pass through, the battery socket plate is installed in the mounting groove, and the battery connector female is passed through the through hole structure; the bottom protective cover is provided with a guide structure or the battery connector female is provided with an anti-reverse insertion structure; the middle of the front and rear sides of the mounting groove is provided with a notch structure for accommodating the snap-fit ​​structure.

[0011] Furthermore, the battery socket plate is provided with wire through holes and first screw positioning holes, the bottom wall of the mounting groove is provided with second screw positioning holes corresponding to the first screw positioning holes, the mounting frame of the upper protective cover is provided with third screw positioning holes corresponding to the first screw positioning holes, the inner wall of the vertical plate of the cover plate is provided with connecting blocks corresponding to the first screw positioning holes, the second screw positioning holes and the third screw positioning holes, the connecting blocks are provided with threaded mounting holes, the cover plate, the upper protective cover, the battery socket plate and the bottom protective cover are connected by bolts, and the bolt shanks pass through the second screw positioning holes, the first screw positioning holes and the third screw positioning holes in sequence and are screwed into the threaded mounting holes of the connecting blocks.

[0012] Furthermore, the left and right ends of the cover plate are respectively provided with a switch fixing interface and a charging port fixing interface, and the battery switch and the charging interface are respectively installed in the switch fixing interface and the charging port fixing interface; the battery switch is a self-locking momentary switch with a protection level of not less than IPX5, the battery switch has a multi-color LED status indicator, and the charging interface is a Type-C fast charging power socket with a protection level of not less than IPX5.

[0013] Furthermore, the cover plate has multiple indicator light holes on its horizontal plate portion, and the charging circuit board has indicator lights that correspond one-to-one with each indicator light hole. Each indicator light passes through the corresponding indicator light hole, and a sealing structure is provided between the indicator light hole and the indicator light.

[0014] Furthermore, the charging circuit board has first connecting through holes at both ends, and the inner protective plate has first threaded holes corresponding to each of the first connecting through holes of the charging circuit board. The charging circuit board is mounted on the inner protective plate with screws. The inner protective plate has multiple second connecting through holes, and the mounting frame of the upper protective cover has second threaded holes corresponding to each of the second connecting through holes. The inner protective plate is mounted on the mounting frame of the upper protective cover with screws.

[0015] Furthermore, the shell and inner protective plate are made of nylon plastic, and the battery cell is a 3S lithium-ion battery cell; multiple battery cells are provided, and the lower plate of the inner protective plate is provided with isolation support ribs inserted between adjacent battery cells to prevent the battery cells from shaking and misaligning.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention adopts a modular structure. The battery module's cover, upper protective shell, battery socket plate, and bottom protective shell are fixedly connected by bolts. Combined with a snap-fit ​​structure and a snap-fit ​​design with the robot's battery mounting cavity, this enables rapid battery disassembly and replacement, significantly improving battery maintenance efficiency. Simultaneously, it allows operators to efficiently complete assembly operations within limited space, ensuring the continuous power supply needs of the mobile robot and reducing downtime. 2. This invention optimizes the combination of a nylon plastic shell and an aluminum alloy cover, achieving lightweight design while ensuring structural strength. This not only reduces the overall weight of the battery module but also improves space utilization, making it suitable for efficient use and convenient replacement in confined spaces. 3. This invention features an external protective shell composed of a bottom protective cover and an upper protective cover, which works in conjunction with the inner protective plate to form a multi-layered protective system. This significantly improves the protection performance of the battery module. It not only physically isolates and secures the battery cells and charging circuit board inside the battery but also externally encloses the battery structure, effectively isolating it from moisture and dust. Furthermore, the use of a self-locking intermittent battery switch with a protection rating of at least IPX and a Type-C fast charging power socket further ensures waterproofing.

[0017] 4. The charging circuit board and the cover plate of the present invention are filled with thermally conductive silicone grease to achieve efficient thermal coupling. Combined with the heat sink structure of the vertical part of the cover plate, the heat dissipation surface area is significantly increased, and the heat dissipation efficiency is effectively improved. This can effectively ensure that the battery module is always maintained within a safe temperature range during charging and discharging, reduce the temperature rise of the battery during charging and discharging, prevent heat accumulation, thereby extending the battery life and ensuring the safety of use. 5. The bottom protective cover of this invention is equipped with a guide structure, or uses a battery connector female with an anti-reverse insertion structure, which can effectively prevent reverse insertion and misinsertion. Simultaneously, the arc-shaped pressing part of the snap-fit ​​structure is equipped with anti-slip arc-shaped protrusions, and the optimized gap and deformation area provide appropriate elasticity and displacement space, significantly improving the connection stability and operational safety of the battery module. The multi-color LED status indicator of the battery switch provides clear indication of the working status under different lighting conditions. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention from a top-down perspective; Figure 2 This is a three-dimensional structural diagram of the present invention from an upward perspective; Figure 3 This is an exploded structural diagram of the present invention; Figure 4 This is a three-dimensional structural diagram of the inner protective plate of the present invention; Figure 5 This is a three-dimensional structural diagram of the cover plate of the present invention; Figure 6 This is a three-dimensional structural diagram of the battery socket board of the present invention; Figure 7 This is a three-dimensional structural diagram of the bottom protective cover of the present invention; Figure 8 This is a three-dimensional structural diagram of the upper protective cover of the present invention; Figure 9 This is a cross-sectional schematic diagram of the snap-fit ​​structure of the present invention.

[0019] In the diagram: 1. Battery cell; 2. Inner protective plate; 21. First threaded hole; 22. Second connecting through hole; 23. Isolation support rib; 3. Charging circuit board; 31. Indicator light; 4. Cover plate; 41. Heat sink structure; 42. Connecting block; 43. Switch fixing interface; 44. Charging port fixing interface; 45. Indicator light hole; 5. Battery switch; 6. Charging interface; 7. Battery socket plate; 71. Wire through hole; 72. First screw positioning hole; 8. Battery connector female; 9. Bottom protective cover; 91. Mounting groove; 92. Through hole structure; 93. Notch structure; 94. Second screw positioning hole; 10. Upper protective cover; 101. Mounting frame; 102. Third screw positioning hole; 103. Second threaded hole; 11. Buckle structure; 111. Chamfered snap-fit ​​part; 112. Arc-shaped pressing part; 113. Anti-slip arc-shaped protrusion; 12. Cavity. Detailed Implementation

[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0021] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: like Figures 1-3 , Figure 7 , Figure 8As shown, a rugged, detachable battery module for mobile robots includes a housing, a battery cell 1, an inner protective plate 2, a charging circuit board 3, a cover plate 4, and a battery socket plate 7. The battery socket plate 7, battery cell 1, inner protective plate 2, and charging circuit board 3 are all housed within the housing. The battery cell 1 uses a 3S lithium-ion battery cell. The housing is made of nylon plastic and includes a bottom protective cover 9 and an upper protective cover 10. An opening structure is provided on the upper protective cover 10, and a mounting frame 101 is provided at the lower end of the upper protective cover 10. The battery cell 1 is mounted on the mounting frame 101. The bottom protective cover 9 has a sealed lower end and an open upper end. The upper protective cover 10 is located at the upper port of the bottom protective cover 9, and the lower end of the mounting frame 101 is inserted into the bottom protective cover 9.

[0022] like Figure 1 , Figure 2 , Figures 7-9 As shown, the width of the upper protective cover 10 in the front-to-back direction is greater than the width of the bottom protective cover 9 in the front-to-back direction. A snap-fit ​​structure 11 is provided at the center of each of the front and rear sides of the upper protective cover 10. The snap-fit ​​structure 11 is used to snap into the battery mounting cavity on the robot, realizing the power supply connection between the battery module and the robot. The snap-fit ​​structure 11 is made of nylon material and includes an integrally formed U-shaped snap-fit ​​part 111 and an arc-shaped pressing part 112. The arc-shaped pressing part 112 is located above the U-shaped snap-fit ​​part 111, and the inner side of the arc-shaped pressing part 112 is a cavity 12. The pressing direction of the arc-shaped pressing part 112 is as follows... Figure 9 As shown, the pressing force can reach 20N, the displacement is about 3mm, and the service life is 9000 to 12000 times, meeting the needs of long-term use under complex working conditions. Multiple anti-slip arc-shaped protrusions 113 are arranged sequentially from top to bottom on the outer wall of the arc-shaped pressing part 112. These protrusions increase the friction between the fingers and the surface of the latching structure 11, effectively ensuring stable operation even under harsh conditions such as wetness, dust, and vibration. Simultaneously, the latching structure 11, through optimized design of the gap and deformation area, provides appropriate elasticity and displacement space, ensuring both reliable connection and easy replacement.

[0023] like Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, the upper end of the bottom protective cover 9 is provided with a mounting groove 91 for mounting the battery socket plate 7. Both the mounting groove 91 and the battery socket plate 7 are rectangular rings. The middle of the front and rear sides of the mounting groove 91 is provided with a notch structure 93 for accommodating the snap-fit ​​structure 11. The battery socket plate 7 is provided with a battery connector female 8 for connecting with the battery connector male 8 provided in the robot battery mounting cavity, thereby providing power to the robot. The bottom wall of the mounting groove 91 is provided with a through hole structure 92 for the battery connector female 8 to pass through. The battery socket plate 7 is installed in the mounting groove 91, and the battery connector female 8 passes through the through hole structure 92, so that the battery connector female 8 protrudes from the shell and is exposed outside the shell. To prevent reverse insertion and mis-insertion when the battery connector female 8 is connected to the robot's battery connector male 8, a guide structure is provided on the bottom protective cover 9. For example, a guide block structure can be set on the outside of one side of the bottom protective cover 9, or the battery connector female 8 itself can be equipped with an anti-reverse insertion structure, such as an asymmetrical insertion structure. For example, the battery connector female 8 uses the GY-A50MF-A-4P-R6S5 type connector, which has high vibration resistance and stability. Moreover, this type of connector itself takes into account the anti-reverse insertion requirement in its structural design. The structural dimensions of its female and male assemblies are specially designed so that they can be successfully connected only in the correct direction, fundamentally preventing reverse insertion and mis-insertion.

[0024] like Figure 3 , Figures 5-8 As shown, the battery socket plate 7 is provided with wire through holes 71 and first screw positioning holes 72. The bottom wall of the mounting groove 91 is provided with second screw positioning holes 94 corresponding to the first screw positioning holes 72. The mounting frame 101 of the upper protective cover 10 is provided with third screw positioning holes 102 corresponding to the first screw positioning holes 72. The inner wall of the vertical plate of the cover plate 4 is provided with connecting blocks 42 corresponding to the first screw positioning holes 72, second screw positioning holes 94 and third screw positioning holes 102. The connecting blocks 42 are provided with threaded mounting holes. The cover plate 4, the upper protective cover 10, the battery socket plate 7 and the bottom protective cover 9 are connected by bolts, and the bolt shanks pass through the second screw positioning holes 94, the first screw positioning holes 72 and the third screw positioning holes 102 in sequence and are screwed into the threaded mounting holes of the connecting blocks 42. In this way, the cover plate 4, the upper protective cover 10, the battery socket plate 7 and the bottom protective cover 9 are fixedly connected.

[0025] like Figure 3 and Figure 4As shown, the inner protective plate 2 is made of nylon plastic and is located between the battery cell 1 and the charging circuit board 3, achieving physical isolation between the battery cell 1 and the charging circuit board 3. The charging circuit board 3 has first connecting through holes at both ends. The inner protective plate 2 has first threaded holes 21 corresponding to each of the first connecting through holes on the charging circuit board 3. The charging circuit board 3 is mounted on the inner protective plate 2 with screws. The inner protective plate 2 has multiple second connecting through holes 22. The mounting frame 101 of the upper protective cover 10 has second threaded holes 103 corresponding to each of the second connecting through holes 22. The inner protective plate 2 is mounted on the mounting frame 101 of the upper protective cover 10 with screws, thus achieving a fixed connection between the inner protective plate 2, the charging circuit board 3, and the upper protective cover 10. Furthermore, the cover plate 4, the upper protective cover 10, the battery socket plate 7, and the bottom protective cover 9 are also connected by bolts, thus achieving a fixed connection between the inner protective plate 2, the charging circuit board 3, the upper cover plate 4, the upper protective cover 10, the battery socket plate 7, and the bottom protective cover 9. Multiple battery cells 1 are provided. Isolation support ribs 23, inserted between adjacent battery cells 1, are provided on the lower surface of the inner protective plate 2 to prevent the battery cells from shaking or misaligning, further improving the stability of the battery cell 1 installation. Therefore, this invention possesses high vibration resistance and stability, meeting the usage requirements of mobile robots.

[0026] like Figure 1 , Figure 3 , Figure 5 and Figure 8 As shown, the upper protective cover 10 has an opening structure, at which a cover plate 4 made of aluminum alloy is installed. This aluminum alloy has a low density and good thermal conductivity. The cover plate 4 has a U-shaped structure, including a horizontal plate portion and vertical plates at both ends of the horizontal plate portion. A sealing structure, such as a sealing gasket, is provided between the cover plate 4 and the opening structure. Thermally conductive silicone grease with a thermal conductivity of 1.2W is filled between the charging circuit board 3 and the horizontal plate portion of the cover plate 4, allowing the heat generated by the charging circuit board 3 to be quickly conducted to the metal cover plate. A heat sink structure 41 is provided on the vertical plate portion, significantly increasing the heat dissipation surface area and effectively improving heat dissipation efficiency, ensuring that the present invention remains within a safe temperature range during charging and discharging.

[0027] like Figure 1 , Figure 3 , Figure 5 and Figure 8As shown, the left and right ends of the horizontal section of the cover plate 4 are respectively provided with a switch fixing interface 43 and a charging port fixing interface 44. The battery switch 5 is installed in the switch fixing interface 43, and the charging port fixing interface 44 is installed in the charging port fixing interface 44. The battery switch 5 is a self-locking momentary switch with a protection level of not less than IPX5, and the charging port 6 is a Type-C fast charging power socket with a protection level of not less than IPX5. This can effectively improve the waterproof effect of the invention, enabling the invention to be used stably in humid environments. The battery switch 5 also has a multi-color LED status indicator light, which can provide clear indication of the working status under different lighting conditions. The horizontal section of the cover plate 4 is provided with multiple indicator light holes 45, and the charging circuit board 3 is provided with indicator lights 31 corresponding to each indicator light hole 45. Each indicator light 31 passes through the corresponding indicator light hole 45, and a sealing structure such as a sealing ring is provided between the indicator light hole 45 and the indicator light 31.

[0028] Battery cell 1 and charging interface 6 are both electrically connected to charging circuit board 3. Battery cell 1 can be charged by connecting a charger and an external power source through charging interface 6. Battery cell 1 and battery socket board 7 are both electrically connected to battery switch 5. Battery switch 5 can control the on / off of the circuit between battery cell 1 and battery connector female socket 8 provided on battery socket board 7.

[0029] This invention also includes a power management system, comprising a charging management component, a battery pack protection component, and a discharging management component, used to supply power to various functional modules of the robot (such as perception and navigation, central control, and power system). Specifically, the power supply path inputs charging voltage through the Type-C charging port, passes through the charging management circuit, the full-function protection module, the 3S lithium battery cell, and the load switch to reach the overall power supply port. To enable independent charging of the display module, the charging management circuit separately outputs a charging voltage, which is converted by the expansion dock module to partially charge the display module. The fast charging protocol component negotiates with the charger to obtain a 20V charging voltage. The status indicator component displays the current operating status of the power management module and has a voltage sampling function, enabling online recording of charge and discharge curves. The 3S lithium battery cell supplies power to various subsystems through a power switch. The Orin NX board of the perception and navigation module outputs 5V power; multiple regulated power supplies in the central control module output 5V to the TOF module, the microcontroller module, and the optical flow module; the power module operates directly connected to the power module through a brushless motor speed control module.

[0030] In summary, the present invention has the following beneficial effects: I. This invention adopts a modular structure. The battery module cover plate 4, upper protective cover 10, battery socket plate 7, and bottom protective cover 9 are fixedly connected by bolts. Combined with the snap-fit ​​structure 11 and the snap-fit ​​design of the robot battery mounting cavity, it realizes the quick disassembly and replacement of the battery, significantly improving battery maintenance efficiency. At the same time, it enables operators to efficiently complete assembly operations in a limited space, ensuring the continuous power supply needs of the mobile robot equipment and reducing downtime. Second, this invention optimizes the combination of a shell made of nylon plastic and a cover plate made of aluminum alloy, achieving lightweight design while ensuring structural strength. This not only reduces the overall weight of the battery module but also improves space utilization, making it suitable for efficient use and convenient replacement in confined spaces. Third, the external protective shell of this invention, composed of a bottom protective cover 9 and an upper protective cover 10, works in conjunction with the inner protective plate 2 to form a multi-layered protective system, significantly improving the protection performance of the battery module. It not only physically isolates and fixes the battery cell 1 and charging circuit board 3 inside the battery, but also externally seals the battery structure, effectively isolating it from the influence of moisture and dust. Simultaneously, the use of a self-locking momentary battery switch 5 with a protection level of at least IPX5 and a Type-C fast charging power socket 6 further ensures the waterproof effect.

[0031] Fourth, the charging circuit board 3 and the cover plate 4 of the present invention are filled with thermally conductive silicone grease to achieve efficient thermal coupling. Combined with the heat sink structure 41 of the vertical plate of the cover plate 4, the heat dissipation surface area is significantly increased, the heat dissipation efficiency is effectively improved, and the battery module can be effectively kept within the safe temperature range during charging and discharging, reducing the temperature rise of the battery during charging and discharging, preventing heat accumulation, thereby extending the battery life and ensuring the safety of use. Fifth, the bottom protective cover 9 of the present invention is provided with a guide structure, or a battery connector female 8 with an anti-reverse insertion structure is used, which can effectively prevent reverse insertion and misinsertion. Meanwhile, the arc-shaped pressing part 112 of the snap-fit ​​structure 11 is provided with an anti-slip arc-shaped protrusion 113, and the optimized gap and deformation area provide appropriate elasticity and displacement space, significantly improving the connection stability and operational safety of the battery module. The multi-color LED status indicator of the battery switch 5 can provide clear indication of the working status under different lighting conditions.

[0032] In summary, this invention provides a rugged, removable battery module for mobile robots that combines high reliability, high durability, and efficient heat dissipation.

[0033] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A rugged, detachable battery module for mobile robots, comprising a housing, characterized in that, The housing contains a battery socket plate (7), a battery cell (1), an inner protective plate (2), and a charging circuit board (3). The battery socket plate (7) has a battery connector female (8) that passes through the housing. The inner protective plate (2) is located between the battery cell (1) and the charging circuit board (3). The upper end and side of the housing have opening structures. A cover plate (4) made of metal material is provided at the opening structure. The cover plate (4) has a U-shaped structure, including a horizontal plate and vertical plates at both ends of the horizontal plate. A heat sink structure (41) is provided on the vertical plate. Thermal grease is filled between the charging circuit board (3) and the horizontal plate of the cover plate (4). A battery switch (5) and a charging interface (6) are provided on the horizontal plate of the cover plate (4). The battery cell (1) and the charging interface (6) are both electrically connected to the charging circuit board (3). The battery cell (1) and the battery socket plate (7) are both electrically connected to the battery switch (5). The housing includes a bottom protective cover (9) and an upper protective cover (10). The opening structure is provided on the upper protective cover (10). The lower end of the upper protective cover (10) is provided with a mounting frame (101). The battery cell (1) is provided on the mounting frame (101). The lower end of the bottom protective cover (9) is sealed and the upper end is open. The upper protective cover (10) is located at the upper port of the bottom protective cover (9), and the lower end of the mounting frame (101) is inserted into the bottom protective cover (9). The width of the upper protective cover (10) in the front-to-back direction is greater than the width of the bottom protective cover (9) in the front-to-back direction. A snap-fit ​​structure (11) is provided in the middle of the front and back sides of the upper protective cover (10). The snap-fit ​​structure (11) is used to snap into the battery mounting cavity provided on the robot to realize the power supply connection between the battery module and the robot. The cover plate (4), the upper protective cover (10), the battery socket plate (7) and the bottom protective cover (9) are connected by bolts.

2. A rugged, detachable battery module for mobile robots according to claim 1, characterized in that, The buckle structure (11) is made of nylon material. The buckle structure (11) includes an integrally formed U-shaped snap-fit ​​part (111) and an arc-shaped pressing part (112). The arc-shaped pressing part (112) is located above the U-shaped snap-fit ​​part (111). The inner side of the arc-shaped pressing part (112) is a cavity (12). Multiple anti-slip arc-shaped protrusions (113) are arranged sequentially from top to bottom on the outer wall of the arc-shaped pressing part (112).

3. A rugged, detachable battery module for mobile robots according to claim 1, characterized in that, The upper end of the bottom protective cover (9) is provided with a mounting groove (91) for mounting the battery socket plate (7). Both the mounting groove (91) and the battery socket plate (7) are rectangular rings. The bottom wall of the mounting groove (91) is provided with a through hole structure (92) for the battery connector female (8) to pass through. The battery socket plate (7) is installed in the mounting groove (91) and the battery connector female (8) passes through the through hole structure (92). The bottom protective cover (9) is provided with a guide structure or the battery connector female (8) is provided with an anti-reverse insertion structure. The middle of the front and rear sides of the mounting groove (91) is provided with a notch structure (93) for accommodating the snap-fit ​​structure (11).

4. A rugged, detachable battery module for mobile robots according to claim 3, characterized in that, The battery socket plate (7) is provided with a wire through hole (71) and a first screw positioning hole (72). The bottom wall of the mounting groove (91) is provided with a second screw positioning hole (94) corresponding to the first screw positioning hole (72). The mounting frame (101) of the upper protective cover (10) is provided with a third screw positioning hole (102) corresponding to the first screw positioning hole (72). The inner wall of the vertical plate of the cover plate (4) is provided with a connecting block (42) corresponding to the first screw positioning hole (72), the second screw positioning hole (94) and the third screw positioning hole (102). The connecting block (42) is provided with a threaded mounting hole. The cover plate (4), the upper protective cover (10), the battery socket plate (7) and the bottom protective cover (9) are connected by bolts, and the bolt shank passes through the second screw positioning hole (94), the first screw positioning hole (72) and the third screw positioning hole (102) in sequence and is screwed into the threaded mounting hole of the connecting block (42).

5. A rugged, detachable battery module for mobile robots according to claim 1, characterized in that, The left and right ends of the horizontal plate of the cover plate (4) are respectively provided with a switch fixing interface (43) and a charging port fixing interface (44). The battery switch (5) and the charging interface (6) are respectively installed in the switch fixing interface (43) and the charging port fixing interface (44). The battery switch (5) is a self-locking momentary switch with a protection level of not less than IPX5. The battery switch (5) has a multi-color LED status indicator. The charging interface (6) is a Type-C fast charging power socket with a protection level of not less than IPX5.

6. A rugged, detachable battery module for mobile robots according to claim 1, characterized in that, The cover plate (4) has a plurality of indicator light holes (45) on its horizontal plate portion. The charging circuit board (3) has an indicator light (31) that corresponds one-to-one with each indicator light hole (45). Each indicator light (31) passes through the corresponding indicator light hole (45). A sealing structure is provided between the indicator light hole (45) and the indicator light (31).

7. A rugged, detachable battery module for mobile robots according to claim 1, characterized in that, The charging circuit board (3) has first connecting through holes at both ends. The inner protective plate (2) has first threaded holes (21) that correspond one-to-one with each of the first connecting through holes of the charging circuit board (3). The charging circuit board (3) is mounted on the inner protective plate (2) with screws. The inner protective plate (2) has multiple second connecting through holes (22). The mounting frame (101) of the upper protective cover (10) has second threaded holes (103) that correspond one-to-one with each of the second connecting through holes (22). The inner protective plate (2) is mounted on the mounting frame (101) of the upper protective cover (10) with screws.

8. A rugged, detachable battery module for mobile robots according to claim 7, characterized in that, The shell and inner protective plate (2) are made of nylon plastic, and the battery cell (1) is a 3S lithium-ion battery cell; multiple battery cells (1) are provided, and the lower plate of the inner protective plate (2) is provided with isolation support ribs (23) inserted between adjacent battery cells (1) to prevent the battery cells from shaking and misaligning.

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