Stepped battery box for golf cart

Abstract

The invention relates to the technical field of golf cart accessories, in particular to a stepped battery box for a golf cart, which comprises a stepped bearing bottom shell, a plurality of layers of battery components, a connecting structure, a heat dissipation mechanism, a top cover plate and a mounting bracket, and is characterized in that triangular reinforcing ribs are arranged at a transition connecting part of the stepped bearing bottom shell, so that the overall strength is enhanced; a modularized buckle structure is adopted to fix the single batteries, the batteries are convenient to mount and dismount, a supporting column and a bearing part are connected through an elastic shock pad, the influence of vibration on the battery assembly is effectively reduced, a heat dissipation mechanism adopts S-shaped arranged heat dissipation fins, a flexible silica gel wind shield and a U-shaped air duct, the heat dissipation performance is improved, and the service life of the battery assembly is prolonged. The top cover plate and the bottom shell are sealed through the sealing rubber ring, the mounting bracket with the damping base is arranged at the bottom, the protective sleeve is arranged outside the battery monomers, and the anticorrosive coatings are arranged on the surfaces of the bottom shell and the cover plate, so that the fireproof and corrosion-resistant performance of the battery box is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of golf cart accessories, and specifically to a stepped battery box for a golf cart. Background Art

[0002] As is well known, a golf cart is a commonly used means of transportation on a golf course, and its power mainly comes from a battery. As a component for carrying the battery, the performance of the battery box plays a crucial role in the usage effect and lifespan of the golf cart.

[0003] The traditional battery box has a complex structural design, and the connection methods between multiple components often require highly precise coordination. For example, some battery boxes use a connection method of multiple layers of insertion holes, fixing grooves, and insertion posts. During the assembly process, all components must be strictly aligned. Even a slight deviation will cause difficulties in assembly or even make it impossible to complete, greatly increasing the operation difficulty and assembly time of workers. Moreover, once a component is damaged during assembly, the process of replacing the component is extremely cumbersome, seriously affecting production efficiency.

[0004] Poor heat dissipation performance is also a major problem of existing battery boxes. Most battery boxes adopt passive heat dissipation methods, relying only on heat conducting plates and heat dissipation fins to dissipate the heat generated by the battery. Under the condition that the golf cart runs for a long time or in a high-temperature environment, the efficiency of this heat dissipation method far fails to meet the requirements. This is because the heat dissipation area and speed of the heat conducting plates and heat dissipation fins are limited, and it is difficult to quickly dissipate a large amount of heat. Even if some battery boxes adopt active heat dissipation solutions, such as hair dryers and S-shaped air duct designs, the air ducts are easily blocked by dust or debris, resulting in the failure of the heat dissipation system, and the additional energy consumption of the hair dryer will also increase the burden on the battery.

[0005] In terms of the fixing stability of the battery, there are also obvious deficiencies in existing battery boxes. Many battery boxes connect the battery through insertion posts and slots, but lack effective anti-loosening designs. During the driving process of the golf cart, the bumps and vibrations of the vehicle will cause the battery components to gradually loosen, resulting in unstable electrical connections and even possible safety problems such as short circuits. At the same time, the support columns of some battery boxes are not strong enough to withstand the weight of the battery and the impact force during vehicle driving, and are prone to structural deformation or fracture.

[0006] When the battery fails or needs to be replaced, the existing battery box design brings great difficulties to the maintenance work. Since the battery components are usually inserted and fixed as a whole, when a single battery is damaged, it is often necessary to disassemble the entire array mechanism to replace it, which not only increases the maintenance cost but also prolongs the maintenance time. In addition, the heat dissipation mechanism is also difficult to clean. For example, the S-shaped air duct and fins are prone to dust accumulation, but it is very complicated to clean them as it requires disassembling the box body. Summary of the Invention

[0007] Technical Problems to be Solved In order to overcome the problems of the existing stepped battery box for golf carts, such as complex structural design, poor heat dissipation performance, unstable battery fixation, and inconvenient maintenance, the present invention provides a stepped battery box for golf carts with a simple structural design, good heat dissipation performance, stable battery fixation, and convenient maintenance.

[0008] (II) Technical Solution To achieve the above object, the present invention provides the following technical solution: A stepped battery box for a golf cart, comprising: A stepped receiving bottom shell, the stepped receiving bottom shell having a lower receiving portion and an upper receiving portion, which are connected by a transition connecting portion, and triangular reinforcing ribs are provided on the transition connecting portion to enhance the overall strength; A multi-layer battery assembly, the multi-layer battery assembly including a lower-layer battery array and an upper-layer battery array, which are respectively installed on the lower receiving portion and the upper receiving portion, the lower-layer battery array and the upper-layer battery array are both composed of battery monomers, and the battery monomers are fixedly connected by buckles; A connecting structure, the connecting structure including support columns and connecting plates, the two ends of the support columns are fixedly connected to the lower receiving portion and the upper receiving portion through elastic shock pads and are distributed in a triangular shape, the connecting plates are arranged between the battery monomers, and the accurate installation of the battery monomers is achieved through the cooperation of positioning columns and positioning holes, and elastic buffer sheets are provided to absorb small displacements and vibrations; A heat dissipation mechanism, the heat dissipation mechanism including a heat conduction plate, heat dissipation fins, a wind deflector, a blower, and a U-shaped air duct, the heat conduction plate is installed at the bottom of the multi-layer battery assembly, the heat dissipation fins are installed below the heat conduction plate and are arranged in an S shape, the wind deflector is arranged between the heat dissipation fins, the open end of the U-shaped air duct is welded to the heat dissipation fins, and the blower is communicated with the heat dissipation fins through the U-shaped air duct; A top cover plate, the top cover plate is hermetically connected to the stepped receiving bottom shell through a sealing rubber ring; An installation bracket, the installation bracket is arranged at the bottom of the stepped receiving bottom shell, is fixedly connected to the golf cart chassis through bolts, and a shock-absorbing base is provided on the installation bracket.

[0009] Preferably, the lower receiving portion and the upper receiving portion are in different height planes, the transition connecting portion connects the two, and the triangular reinforcing ribs are integrally formed on the transition connecting portion to enhance the overall structural strength of the stepped receiving bottom shell and reduce stress concentration.

[0010] Further, the lower - layer battery array is composed of a plurality of the battery monomers arranged and installed on the lower - layer receiving part, and the upper - layer battery array is composed of a plurality of the battery monomers arranged and installed on the upper - layer receiving part. A clamping block is provided on the side of the battery monomer, and a clamping groove is provided between adjacent battery monomers. The clamping block and the clamping groove cooperate with each other to form a snap - fit structure, realizing the rapid installation and disassembly of the battery monomers.

[0011] Furthermore, there are a plurality of the support columns, and both ends are fixedly connected to the lower - layer receiving part and the upper - layer receiving part respectively through elastic shock - absorbing pads made of rubber material. The plurality of support columns are distributed in a triangular shape to improve the support stability of the upper - layer battery array and reduce the influence of vehicle driving vibration on the multi - layer battery assembly.

[0012] In a further solution, the connecting plate is made of a high - strength alloy material and is fixedly arranged between adjacent battery monomers. A plurality of positioning holes are provided on the connecting plate, and positioning columns corresponding to the positioning holes are provided on the battery monomers. The positioning columns are inserted into the positioning holes to realize the installation and fixation of the battery monomers. An elastic buffer sheet is also provided on the connecting plate to absorb the small displacements generated between the battery monomers due to vibration.

[0013] On the basis of the foregoing solution, the heat - conducting plate is fitted and installed at the bottom of the multi - layer battery assembly to conduct the heat generated by the battery monomers to the heat - dissipating fins below. The heat - dissipating fins are arranged in an S - shape below the heat - conducting plate. The wind - blocking plate is made of flexible silicone material and is fixedly arranged between the heat - dissipating fins to prevent breakage during collision or cleaning. The open end of the U - shaped air duct is welded and fixed to the heat - dissipating fins. The hair dryer is installed on one side of the stepped receiving bottom shell and is communicated with the heat - dissipating fins through the U - shaped air duct, forming an active heat - dissipation system.

[0014] On the basis of the foregoing solution, further, the top cover plate is arranged above the stepped receiving bottom shell and is hermetically connected to the stepped receiving bottom shell through a sealing rubber ring. The sealing rubber ring is arranged around the contact edge between the top cover plate and the stepped receiving bottom shell to prevent dust and moisture from entering the interior of the stepped receiving bottom shell. A handle is provided on the top cover plate to facilitate the handling and installation of the stepped receiving bottom shell.

[0015] On the basis of the foregoing solution, further, the mounting brackets are arranged at the four - corner positions at the bottom of the stepped receiving bottom shell and are fixedly connected to the golf cart chassis through bolts. The shock - absorbing base adopts a structure combined with springs and rubber to reduce the impact on the stepped receiving bottom shell during vehicle driving.

[0016] On the basis of the foregoing solution, further, a buffer layer is provided inside the stepped receiving bottom case. The buffer layer is made of sponge material and is disposed between the multi-layer battery assembly, the stepped receiving bottom case and the top cover plate to further protect the multi-layer battery assembly from vibration and impact.

[0017] On the basis of the foregoing solution, further, a protective sleeve is sleeved outside the battery cell. The protective sleeve is made of a fireproof and corrosion-resistant plastic material to protect the battery cell from the influence of the external environment. The surfaces of the stepped receiving bottom case and the top cover plate are both coated with an epoxy zinc-rich primer anti-corrosion coating to improve the corrosion resistance of the stepped receiving bottom case.

[0018] (III) Beneficial Effects The stepped battery box for the golf cart: 1. By providing triangular reinforcing ribs at the transition connection part of the stepped receiving bottom case, the overall strength is enhanced, stress concentration is reduced, and the service life of the battery box is improved.

[0019] 2. The battery cells are fixed by a modular snap structure, which facilitates the installation and disassembly of the batteries, and improves the assembly efficiency and maintenance convenience.

[0020] 3. The support columns are connected to the receiving part through elastic shock pads, and the support columns are distributed in a triangular shape, effectively reducing the influence of vibration on the battery assembly and improving the fixing stability.

[0021] 4. The heat dissipation mechanism adopts S-shaped arranged heat dissipation fins, a flexible silicone wind deflector and a U-shaped air duct, which improves the heat dissipation performance and ensures the reliability of the heat dissipation mechanism at the same time.

[0022] 5. The top cover plate and the bottom case are sealed by a sealing rubber ring, an installation bracket with a shock-absorbing base is provided at the bottom, and a buffer layer is provided inside, comprehensively protecting the battery assembly from dust, moisture, vibration and impact.

[0023] 6. A protective sleeve is provided outside the battery cell, and an anti-corrosion coating is provided on the surfaces of the bottom case and the cover plate, improving the fireproof and corrosion-resistant performance of the battery box. Description of the Drawings

[0024] Figure 1 is a schematic side view structure diagram of the present invention; Figure 2 is a schematic structure diagram of the stepped receiving bottom case of the present invention; Figure 3 is a schematic structure diagram of the shock-absorbing base of the present invention; Figure 4 is a schematic structure diagram of the U-shaped air duct of the present invention; Figure 5Schematic structural diagram of the windshield of the present invention; Figure 6 Schematic structural diagram of the windshield of the present invention; Figure 7 The present invention Figure 6 Partial enlarged structural diagram of part A in the present invention; Figure 8 Schematic structural diagram of the heat dissipation fins of the present invention; Figure 9 Schematic structural diagram of the multi-layer battery assembly of the present invention; Figure 10 Schematic structural diagram of the connection structure of the present invention; Figure 11 Schematic structural diagram of the battery cell of the present invention; Figure 12 Top view structural diagram of the battery cell of the present invention; Figure 13 The present invention Figure 12 Cross-sectional structural diagram at A-A in the present invention; Figure 14 Schematic structural diagram of the sealing rubber ring of the present invention.

[0025] In the figure: 1, stepped receiving bottom shell; 2, lower receiving part; 3, upper receiving part; 4, transition connection part; 5, triangular reinforcing rib; 6, multi-layer battery assembly; 7, lower battery array; 8, upper battery array; 9, battery cell; 10, buckle; 11, connection structure; 12, support column; 13, connecting plate; 14, elastic shock pad; 15, positioning column; 16, positioning hole; 17, elastic buffer sheet; 18, heat dissipation mechanism; 19, heat conducting plate; 20, heat dissipation fins; 21, windshield; 22, hair dryer; 23, U-shaped air duct; 24, top cover plate; 25, sealing rubber ring; 26, mounting bracket; 27, shock absorption base; 28, clamping block; 29, clamping groove; 30, handle; 31, spring; 32, rubber; 33, buffer layer; 34, protective sleeve; 35, anti-corrosion coating. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Refer to Figures 1 to 14 , a stepped battery box for a golf cart, including: a stepped receiving bottom shell 1, a multi-layer battery assembly 6, a connection structure 11, a heat dissipation mechanism 18, a top cover plate 24 and a mounting bracket 26.

[0028] The stepped receiving bottom shell 1 has a lower receiving portion 2 and an upper receiving portion 3, which are connected by a transition connecting portion 4. The lower receiving portion 2 and the upper receiving portion 3 are made of high-strength engineering plastics or metal materials, such as aluminum alloy or high-strength polypropylene. The transition connecting portion 4 is also made of the same material. Its design makes the stepped receiving bottom shell 1 form a stepped structure, which can better adapt to the space layout of the golf cart. A triangular reinforcing rib 5 is provided on the transition connecting portion 4. The triangular reinforcing rib 5 is made of metal material, such as stainless steel. The triangular structure has stability, which can enhance the strength of the transition connecting portion 4, improve the load-bearing capacity and anti-deformation ability of the entire stepped receiving bottom shell 1, and ensure that the structure will not be easily damaged when the stepped receiving bottom shell 1 is subjected to external impact or vibration. The multi-layer battery assembly 6 includes a lower battery array 7 and an upper battery array 8, which are respectively installed on the lower receiving portion 2 and the upper receiving portion 3. This layered installation method makes the internal space of the stepped receiving bottom shell 1 reasonably utilized, and at the same time facilitates the management and maintenance of batteries at different levels. Both the lower battery array 7 and the upper battery array 8 are composed of battery cells 9. The battery cells 9 are fixedly connected by buckles 10. The buckles 10 are made of high-strength plastic or metal materials and have good elasticity and wear resistance. The design of the buckles 10 can ensure the firm and reliable connection between the battery cells 9, and at the same time facilitate disassembly and replacement when needed.

[0029] The support columns 12 in the connection structure 11 are made of metal material, such as carbon steel. Both ends of the support columns 12 are fixedly connected to the lower receiving portion 2 and the upper receiving portion 3 through elastic shock pads 14. The elastic shock pads 14 are made of rubber 32 material and have good elasticity and shock absorption performance. The support columns 12 are distributed in a triangular shape. This distribution method can provide stable support. At the same time, the elastic shock pads 14 can absorb the vibration and impact during the driving of the golf cart, protecting the battery assembly from damage. The connecting plate 13 is arranged between the battery cells 9, and the accurate installation of the battery cells 9 is realized by the cooperation of the positioning columns 15 and the positioning holes 16. The connecting plate 13 is made of metal or plastic material. The dimensional accuracy requirements of the positioning columns 15 and the positioning holes 16 are relatively high to ensure the accurate installation position of the battery cells 9. An elastic buffer sheet 17 is provided on the connecting plate 13. The elastic buffer sheet 17 is made of rubber 32 or silica gel material and can absorb the small displacements and vibrations generated by the battery cells 9 during use, preventing damage to the battery cells 9 due to mutual collision.

[0030] The heat conducting plate 19 of the heat dissipation mechanism 18 is installed at the bottom of the multi-layer battery assembly 6 and is made of a metal material with high thermal conductivity, such as copper or aluminum. The heat conducting plate 19 can quickly conduct the heat generated by the battery assembly to the heat dissipation fins 20 below. The heat dissipation fins 20 are installed below the heat conducting plate 19 and are arranged in an S shape. The heat dissipation fins 20 are also made of a metal material with high thermal conductivity. The S-shaped arrangement design increases the heat dissipation area of the heat dissipation fins 20 and improves the heat dissipation efficiency. The wind deflector 21 is arranged between the heat dissipation fins 20 and is made of metal or plastic material. The function of the wind deflector 21 is to guide the flow direction of the air flow, so that the air flow can better contact the heat dissipation fins 20 and enhance the heat dissipation effect. The open end of the U-shaped air duct 23 is welded to the heat dissipation fins 20. The U-shaped air duct 23 is made of metal material. The welded connection ensures the airtightness of the air duct. The design of the U-shaped air duct 23 enables the air flow to form a cycle in the air duct and improves the uniformity of heat dissipation. The hair dryer 22 is communicated with the heat dissipation fins 20 through the U-shaped air duct 23. The hair dryer 22, as the power source of the heat dissipation mechanism 18, can introduce the cold air from the outside into the U-shaped air duct 23, take away the heat when passing through the heat dissipation fins 20, and then discharge the hot air.

[0031] The top cover plate 24 is hermetically connected to the stepped bearing bottom shell 1 through the sealing rubber ring 25. The top cover plate 24 is made of the same or similar material as the stepped bearing bottom shell 1. The sealing rubber ring 25 is made of rubber 32 material and has good sealing performance. The hermetic connection design can prevent dust, moisture, etc. from entering the inside of the stepped bearing bottom shell 1 and protect the battery assembly from the influence of the external environment. The mounting bracket 26 is arranged at the bottom of the stepped bearing bottom shell 1 and is fixedly connected to the golf cart chassis through bolts. The mounting bracket 26 is made of metal material, such as steel. The bolt connection method ensures the firm and reliable connection between the stepped bearing bottom shell 1 and the golf cart chassis and is convenient for disassembly and installation when needed. The mounting bracket 26 is provided with a shock-absorbing base 27. The shock-absorbing base 27 is made of elastic materials such as rubber 32 or spring 31. The shock-absorbing base 27 can further absorb the vibration and impact from the driving process of the golf cart, protect the stepped bearing bottom shell 1 and the battery assembly from damage, and at the same time improve the driving comfort of the golf cart.

[0032] First, refer to Figure 2, in this embodiment, the lower receiving portion 2 and the upper receiving portion 3 are at different height planes. This stepped design fits the spatial layout of the golf cart, can make more reasonable use of space. The transition connecting portion 4 connects the two, and the triangular reinforcing rib 5 is integrally formed on the transition connecting portion 4. The integral forming method ensures the firm connection between the reinforcing rib and the transition connecting portion 4, enhancing the overall structural strength of the stepped receiving bottom shell 1. The triangular reinforcing rib 5 utilizes the stability principle of the triangle to effectively disperse stress and reduce stress concentration, making the stepped receiving bottom shell 1 not easily deformed or damaged when subjected to external forces. The stepped receiving bottom shell 1 may be made of a high-strength metal material such as aluminum alloy through casting or stamping processes. This material and process can not only ensure the strength of the bottom shell but also reduce its weight, meeting the lightweight requirement of the stepped receiving bottom shell 1 for the golf cart.

[0033] Then, refer to Figure 9 , in this embodiment, the lower battery array 7 and the upper battery array 8 are respectively composed of multiple battery cells 9 arranged and installed on the lower receiving portion 2 and the upper receiving portion 3. A clamping block 28 is provided on the side of the battery cell 9, and a clamping groove 29 is provided on the adjacent battery cell 9. The clamping block 28 and the clamping groove 29 cooperate with each other to form a snap 10 structure. This snap 10 structure is ingeniously designed, making the installation and disassembly operations of the battery cell 9 simple and fast. During installation, just align the clamping block 28 with the clamping groove 29 and insert it. During disassembly, gently apply force to make the clamping block 28 disengage from the clamping groove 29 to remove the battery cell 9, improving the efficiency of battery maintenance. A protective sleeve 34 is sleeved outside the battery cell 9. The protective sleeve 34 is made of a fireproof and corrosion-resistant plastic material. The fireproof performance can effectively prevent the battery from causing a fire in case of an accident, and the corrosion-resistant performance can protect the battery cell 9 from being eroded by chemical substances in the external environment, extending the service life of the battery.

[0034] Secondly, refer to Figure 10 , in this embodiment, there are multiple support columns 12, and both ends are fixedly connected to the lower receiving portion 2 and the upper receiving portion 3 respectively through elastic shock-absorbing pads 14 made of rubber 32. The rubber 32 elastic shock-absorbing pads 14 have good elasticity and vibration absorption performance, and can effectively absorb the vibration energy generated during vehicle driving. The multiple support columns 12 are distributed in a triangular shape. According to the stability principle of the triangle, this distribution method greatly improves the support stability for the upper battery array 8, reduces the influence of vehicle driving vibration on the multi-layer battery assembly 6, and ensures the stability of the battery assembly during driving.

[0035] Thirdly, refer to Figure 10 and Figure 11, in this embodiment, the connecting plate 13 is made of high-strength alloy material and is fixedly arranged between adjacent battery cells 9. A plurality of positioning holes 16 are provided on the connecting plate 13, and positioning posts 15 corresponding to the positioning holes 16 are provided on the battery cells 9. The positioning posts 15 are inserted into the positioning holes 16 to realize the installation and fixation of the battery cells 9. This positioning structure ensures the accuracy and firmness of the installation of the battery cells 9, preventing the battery cells 9 from shifting during use. At the same time, elastic buffer sheets 17 are also provided on the connecting plate 13 to absorb the minute displacements generated between the battery cells 9 due to vibration, further protecting the battery cells 9 and reducing the mutual collision and damage caused by vibration.

[0036] In addition, referring to Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 10 , in this embodiment, the heat-conducting plate 19 is attached and installed at the bottom of the multi-layer battery module 6. Made of a metal material with a high heat-conductivity coefficient, such as copper or aluminum, it can quickly conduct the heat generated by the battery cells 9 to the heat dissipation fins 20 below. The heat dissipation fins 20 are arranged in an S shape below the heat-conducting plate 19. The S-shaped arrangement increases the surface area of the heat dissipation fins 20 and improves the heat dissipation efficiency. This arrangement enables the air to better contact the fin surface when flowing through the heat dissipation fins 20, taking away more heat. The wind deflector 21 is made of flexible silicone material and is fixedly arranged between the heat dissipation fins 20. The flexible silicone material has good flexibility and impact resistance, which can effectively prevent the wind deflector 21 from breaking during collision or cleaning. The open end of the U-shaped air duct 23 is welded and fixed to the heat dissipation fins 20, ensuring the sealing between the air duct and the heat dissipation fins 20. The hair dryer 22 is installed on one side of the stepped receiving bottom case 1 and is connected to the heat dissipation fins 20 through the U-shaped air duct 23 to form an active heat dissipation system. The hair dryer 22 blows the outside cold air into the U-shaped air duct 23. The cold air absorbs heat when flowing through the heat dissipation fins 20 and then discharges the hot air, realizing effective heat dissipation of the battery module.

[0037] In addition, referring to Figure 14 , in this embodiment, the top cover plate 24 is arranged above the stepped receiving bottom case 1 and is hermetically connected to the stepped receiving bottom case 1 through a sealing rubber ring 25. The sealing rubber ring 25 is arranged around the contact edge between the top cover plate 24 and the stepped receiving bottom case 1, which can effectively prevent dust and moisture from entering the inside of the stepped receiving bottom case 1 and protect the battery module from the external environment. A handle 30 is provided on the top cover plate 24, which is convenient for handling and installing the stepped receiving bottom case 1. The design of the handle 30 conforms to the ergonomic principle, facilitating the operator to grasp and reducing the labor intensity of handling and installation.

[0038] In addition, referring to Figure 2 andFigure 3 , in this embodiment, the mounting brackets 26 are arranged at the four corner positions at the bottom of the stepped receiving bottom shell 1 and are fixedly connected to the golf cart chassis by bolts. This mounting method ensures a firm connection between the stepped receiving bottom shell 1 and the golf cart chassis and can withstand various forces during vehicle driving. The shock-absorbing base 27 adopts a structure combined with a spring 31 and a rubber 32. The spring 31 has good elasticity and can absorb a large impact force, while the rubber 32 can further buffer and absorb vibration energy. This combined structure effectively reduces the impact on the stepped receiving bottom shell 1 during vehicle driving, protects the battery components inside the stepped receiving bottom shell 1, and improves the service life of the stepped receiving bottom shell 1 and the driving comfort of the vehicle.

[0039] Finally, refer to Figure 1 , in this embodiment, a buffer layer 33 is provided inside the stepped receiving bottom shell 1. The buffer layer 33 is made of sponge material and is arranged between the multi-layer battery components 6 and the stepped receiving bottom shell 1 and the top cover plate 24. The sponge material has good buffering performance and can further protect the multi-layer battery components 6 from vibration and impact, reducing the risk of damage to the battery components during transportation and use. The surfaces of the stepped receiving bottom shell 1 and the top cover plate 24 are both coated with an epoxy zinc-rich primer anti-corrosion coating 35. The epoxy zinc-rich primer has excellent anti-corrosion performance and can effectively prevent the bottom shell and the cover plate from being eroded by moisture, oxygen and chemical substances in the external environment, extending the service life of the stepped receiving bottom shell 1.

[0040] Working principle: When the stepped battery box for the golf cart is in use, first, the battery box is fixed to the golf cart chassis by bolts through the mounting brackets 26 at the four corner positions at the bottom. The shock-absorbing base 27 on the mounting brackets 26 can reduce the impact on the stepped receiving bottom shell 1 during vehicle driving.

[0041] First, the battery cells 9 of the lower battery array 7 are sequentially installed on the lower receiving part 2, so that the clamping blocks 28 on the sides of the battery cells 9 cooperate with the card slots 29 of the adjacent battery cells 9 to complete the snap connection 10. Similarly, the battery cells 9 of the upper battery array 8 are installed on the upper receiving part 3. During the installation process, the positioning posts 15 on the connecting plate 13 cooperate with the positioning holes 16 on the battery cells 9 to ensure accurate installation, and the elastic buffer sheets 17 on the connecting plate 13 absorb the small displacements generated between the battery cells 9 due to the operation.

[0042] A heat conducting plate 19 is adhesively mounted at the bottom of the multi-layer battery assembly 6, heat dissipation fins 20 are mounted in an S shape below the heat conducting plate 19, a wind baffle 21 made of flexible silica gel is mounted between the heat dissipation fins 20, the open end of the U-shaped air duct 23 is welded and connected to the heat dissipation fins 20, and finally a hair dryer 22 is mounted on one side of the stepped receiving bottom case 1 and communicated with the U-shaped air duct 23 to complete the installation of the heat dissipation mechanism 18.

[0043] A sealing rubber ring 25 is mounted around the contact edge of the stepped receiving bottom case 1, and the top cover plate 24 is hermetically connected to the stepped receiving bottom case 1 through the sealing rubber ring 25 to ensure that dust and moisture cannot enter.

[0044] After the installation of the stepped receiving bottom case 1 is completed, during the driving of the golf cart, the elastic shock pads 14 at both ends of the support column 12 and the shock bases 27 on the mounting brackets 26 act together to reduce the impact of vibration on the battery assembly. Heat is generated during the operation of the battery, and the heat conducting plate 19 conducts the heat to the heat dissipation fins 20. The hair dryer 22 blows cold air into the U-shaped air duct 23, and the cold air flows through the heat dissipation fins 20 to take away the heat and then is discharged, realizing active heat dissipation. If a single battery cell 9 fails, it can be directly disassembled and replaced through the buckle 10 structure without disassembling the entire battery array, which is easy to operate. Regularly check the sealing rubber ring 25, the heat dissipation mechanism 18, the connection of the battery cell 9, etc., and clean the dust on the heat dissipation fins 20 to ensure the normal operation of the stepped receiving bottom case 1.

[0045] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepped battery box for a golf cart, characterized in that, Comprising: A stepped receiving bottom case (1), the stepped receiving bottom case (1) having a lower receiving portion (2) and an upper receiving portion (3), which are connected by a transition connecting portion (4), and a triangular reinforcing rib (5) is provided on the transition connecting portion (4) to enhance the overall strength; A multi-layer battery assembly (6), the multi-layer battery assembly (6) including a lower battery array (7) and an upper battery array (8), which are respectively installed on the lower receiving portion (2) and the upper receiving portion (3), the lower battery array (7) and the upper battery array (8) are both composed of battery cells (9), and the battery cells (9) are fixedly connected by snap fasteners (10); A connection structure (11), the connection structure (11) including support columns (12) and a connection plate (13), the two ends of the support columns (12) are fixedly connected to the lower receiving portion (2) and the upper receiving portion (3) through elastic shock pads (14) and are distributed in a triangular shape, the connection plate (13) is arranged between the battery cells (9), and the accurate installation of the battery cells (9) is realized by the cooperation of positioning columns (15) and positioning holes (16), and elastic buffer sheets (17) are provided to absorb small displacements and vibrations; A heat dissipation mechanism (18), the heat dissipation mechanism (18) including a heat conducting plate (19), heat dissipation fins (20), a wind deflector (21), a blower (22) and a U-shaped air duct (23), the heat conducting plate (19) is installed at the bottom of the multi-layer battery assembly (6), the heat dissipation fins (20) are installed below the heat conducting plate (19) and are arranged in an S shape, the wind deflector (21) is arranged between the heat dissipation fins (20), the open end of the U-shaped air duct (23) is welded to the heat dissipation fins (20), and the blower (22) is communicated with the heat dissipation fins (20) through the U-shaped air duct (23); A top cover plate (24), the top cover plate (24) is hermetically connected to the stepped receiving bottom case (1) through a sealing rubber ring (25); An installation bracket (26), the installation bracket (26) is arranged at the bottom of the stepped receiving bottom case (1), and a shock-absorbing base (27) is provided on the installation bracket (26).

2. The stepped battery box for a golf cart according to claim 1, wherein, The lower receiving portion (2) and the upper receiving portion (3) are on different height planes, the transition connecting portion (4) connects the two, and the triangular reinforcing rib (5) is integrally formed on the transition connecting portion (4) to enhance the overall structural strength of the stepped receiving bottom case (1) and reduce stress concentration.

3. The stepped battery box for a golf cart according to claim 2, characterized in that, The lower battery array (7) is composed of a plurality of the battery cells (9) arranged and installed on the lower receiving portion (2), the upper battery array (8) is composed of a plurality of the battery cells (9) arranged and installed on the upper receiving portion (3), a clamping block (28) is provided on the side of the battery cell (9), a clamping groove (29) is provided on the side of an adjacent battery cell (9), and the clamping block (28) and the clamping groove (29) cooperate with each other to form a snap fastener (10) structure, realizing the quick installation and disassembly of the battery cells (9).

4. The stepped battery box for a golf cart according to claim 3, wherein The support columns (12) are multiple. Both ends are fixedly connected to the lower layer receiving part (2) and the upper layer receiving part (3) respectively through elastic shock pads (14) made of rubber (32). The multiple support columns (12) are distributed in a triangular shape to improve the support stability of the upper layer battery array (8) and reduce the influence of vehicle driving vibration on the multi-layer battery assembly (6).

5. The stepped battery box for a golf cart according to claim 4, characterized in that, The connecting plate (13) is made of a high-strength alloy material and is fixedly arranged between adjacent battery cells (9). A plurality of positioning holes (16) are provided on the connecting plate (13). Positioning columns (15) corresponding to the positioning holes (16) are provided on the battery cells (9). The battery cells (9) are installed and fixed by inserting the positioning columns (15) into the positioning holes (16). An elastic buffer sheet (17) is also provided on the connecting plate (13) to absorb the small displacement generated between the battery cells (9) due to vibration.

6. The stepped battery box for a golf cart according to claim 5, wherein, The heat conduction plate (19) is fitted and installed at the bottom of the multi-layer battery assembly (6) to conduct the heat generated by the battery cells (9) to the heat dissipation fins (20) below. The heat dissipation fins (20) are arranged in an S shape below the heat conduction plate (19). The wind shield (21) is made of flexible silicone material and is fixedly arranged between the heat dissipation fins (20) to prevent breakage during collision or cleaning. The open end of the U-shaped air duct (23) is welded and fixed to the heat dissipation fins (20). The hair dryer (22) is installed on one side of the stepped receiving bottom case (1) and is communicated with the heat dissipation fins (20) through the U-shaped air duct (23) to form an active heat dissipation system.

7. The stepped battery box for a golf cart according to claim 6, wherein, The top cover plate (24) is arranged above the stepped receiving bottom case (1) and is hermetically connected to the stepped receiving bottom case (1) through a sealing rubber ring (25). The sealing rubber ring (25) is arranged around the contact edge between the top cover plate (24) and the stepped receiving bottom case (1) to prevent dust and moisture from entering the inside of the stepped receiving bottom case (1). A handle (30) is provided on the top cover plate (24) to facilitate the handling and installation of the stepped receiving bottom case (1).

8. The stepped battery box for a golf cart according to claim 7, characterized in that, The mounting brackets (26) are arranged at the four corner positions of the bottom of the stepped receiving bottom case (1). The shock absorption base (27) adopts a structure combined with a spring (31) and rubber (32) to reduce the impact on the stepped receiving bottom case (1) during vehicle driving.

9. The stepped battery box for a golf cart according to claim 8, wherein, A buffer layer (33) is further provided inside the stepped receiving bottom case (1). The buffer layer (33) is made of sponge material and is arranged between the multi-layer battery assembly (6) and the stepped receiving bottom case (1) and the top cover plate (24) to further protect the multi-layer battery assembly (6) from the influence of vibration and impact.

10. The stepped battery box for a golf cart according to claim 9, wherein, The battery cell (9) is externally covered with a protective sleeve (34), the protective sleeve (34) being made of a fireproof and corrosion-resistant plastic material and being used to protect the battery cell (9) from the influence of the external environment, and the surfaces of the stepped receiving bottom shell (1) and the top cover plate (24) are coated with an epoxy zinc-rich primer anti-corrosion coating (35) to improve the corrosion resistance of the stepped receiving bottom shell (1).

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