A mounting structure of a heavy truck starting lithium battery
Patent Information
- Application Number
- CN202521177152.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-06-10
AI Technical Summary
[0010]与现有技术相比，本实用新型的有益效果是：该一种重卡启动锂电池的安装结构的设置，结构设计合理；
Smart Images
Figure CN224759502U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measuring calipers, specifically to an installation structure for a heavy-duty truck starting lithium battery. Background Technology
[0002] In the operation of heavy-duty trucks, the starting lithium battery is a key power component, and the stability and reliability of its installation structure are crucial. Existing installation structures for heavy-duty truck starting lithium batteries mostly employ simple fixing methods. During vehicle operation, factors such as road bumps and vibrations can easily cause the lithium battery to loosen, affecting not only its normal use but also posing safety hazards. Therefore, improvements to existing technology are necessary. Utility Model Content
[0003] The purpose of this invention is to provide an installation structure for a heavy-duty truck starting lithium battery to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an installation structure for a heavy-duty truck starting lithium battery, including a starting battery box, a frame-shaped base plate mounted at the bottom of the starting battery box, a shock-absorbing plate mounted at the bottom of the frame-shaped base plate, and mounting plates mounted at the four corners of the bottom of the shock-absorbing plate; two mounting holes are opened on the side wall of the mounting plate, and fasteners are installed inside the mounting holes; the fasteners include a fastening screw and an anti-detachment screw, and a fastening nut is screwed onto the outside of the fastening screw; an anti-detachment groove is opened at the bottom of the fastening screw, and the anti-detachment screw is screwed into the anti-detachment groove; an anti-detachment sleeve is sleeved on the outside of the anti-detachment screw, and three limiting posts are installed on the outer wall of the anti-detachment sleeve, the three limiting posts being triangularly distributed; and a spiral groove that cooperates with the fastening screw is opened on the inner wall of each limiting post.
[0005] As a preferred installation structure for a heavy-duty truck starting lithium battery according to this utility model, the inner wall of the anti-detachment cylinder is provided with a reverse internal thread, and the outer part of the anti-detachment screw that fits with the anti-detachment cylinder is provided with a reverse external thread, and the reverse internal thread and the reverse external thread cooperate with each other.
[0006] As a preferred installation structure for a heavy-duty truck starting lithium battery according to this utility model, the outer wall of the fastening nut is provided with an annular groove, and the end of the limiting post is disposed in the annular groove.
[0007] As a preferred installation structure for a heavy-duty truck starting lithium battery according to this utility model, a fixing ring is fixedly installed on the upper outer end of the fastening screw, and an annular pressure plate, a spring and an annular rubber sheet are fitted on the circumferential surface of the fastening screw, and a compression block is fixedly installed at the lower edge of the annular pressure plate.
[0008] As a preferred installation structure for a heavy-duty truck starting lithium battery according to this utility model, a bearing block is fixedly attached to the side wall of the anti-detachment cylinder, an elastic rod is installed at the top of the bearing block, a fixing opening is opened at the bottom of the limiting post, and the top of the elastic rod is fixed in the fixing opening.
[0009] As a preferred installation structure for a heavy-duty truck starting lithium battery according to this utility model, a heat dissipation frame is fitted at the top of the frame-shaped base plate, and the starting battery box is fitted inside the heat dissipation frame.
[0010] Compared with the prior art, the beneficial effects of this utility model are: the installation structure of the heavy truck starting lithium battery is reasonably designed; The fastener adopts a structure that combines a fastening screw and an anti-loosening screw. The anti-loosening screw is screwed into the anti-loosening groove of the fastening screw. Furthermore, the limiting post on the outer wall of the anti-loosening cylinder cooperates with the annular groove of the fastening nut, and the spiral groove on the inner wall of the limiting post cooperates with the fastening screw. This multiple fastening design ensures that the installation structure will not loosen during vehicle operation, thus improving the reliability of lithium battery installation. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the fastener of this utility model; Figure 3 This is a schematic diagram of the anti-detachment cylinder of this utility model; Figure 4 This is a schematic diagram of the limiting post of this utility model.
[0012] In the diagram: 1. Starter battery box; 2. Heat dissipation frame; 3. Frame-shaped base plate; 4. Shock-absorbing plate; 5. Mounting hole; 6. Fastener; 7. Mounting plate; 8. Anti-loosening screw groove; 9. Anti-loosening cylinder; 10. Anti-loosening screw; 11. Annular rotating groove; 12. Fixing ring; 13. Extrusion block; 14. Annular pressure plate; 15. Annular rubber sheet; 16. Spring; 17. Limiting post; 18. Spiral groove; 19. Reverse internal thread; 20. Fixing nut; 21. Fastening screw; 22. Bearing block; 23. Elastic rod. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, an installation structure for a heavy-duty truck starting lithium battery includes a starting battery box 1. The bottom of the starting battery box 1 is fitted with a frame-shaped base plate 3, and a shock-absorbing plate 4 is installed at the bottom of the frame-shaped base plate 3. Mounting plates 7 are installed at the four corners of the bottom of the shock-absorbing plate 4. Two mounting holes 5 are opened on the side wall of the mounting plate 7, and fasteners 6 are installed inside the mounting holes 5. The fasteners 6 include a fastening screw 21 and an anti-detachment screw 10. A fastening nut 20 is screwed onto the outside of the fastening screw 21. An anti-detachment groove 8 is opened at the bottom of the fastening screw 21, and the anti-detachment screw 10 is screwed into the anti-detachment groove 8. An anti-detachment sleeve 9 is sleeved on the outside of the anti-detachment screw 10. Three limiting posts 17 are installed on the outer wall of the anti-detachment sleeve 9, and the three limiting posts 17 are distributed in a triangle. The inner wall of each limiting post 17 is provided with a spiral groove 18 that cooperates with the fastening screw 21.
[0015] The bottom of the starting battery box 1 should be designed with mounting interfaces adapted to the frame-shaped base plate 3, such as setting L-shaped connecting plates at the four corners of the battery box and fixing them to the frame-shaped base plate 3 with M8-M12 bolts. The frame-shaped base plate 3 is made of Q345 high-strength steel with a thickness of 6-8mm. The inner frame dimension is 10-15mm larger than the outer contour of the bottom of the battery box to reserve installation space. Bolt specifications M10×40, preload 60-80N・m; outer frame dimensions of frame base plate 3 are 500mm×400mm×6mm, inner frame dimensions are 480mm×380mm; A 3-5mm thick nitrile rubber shock-absorbing pad with a hardness of 60-70 Shore A and a compression set of ≤20% is added between the battery box and the frame base plate. The damping plate 4 adopts a multi-layer composite structure, with a 10mm thick polyurethane elastomer (Shore A hardness 85) as the upper layer, a 5mm thick steel plate as the middle layer, and an 8mm thick neoprene rubber (Shore A hardness 70) as the lower layer, which is formed by hot vulcanization. The damping plate 4 is connected to the frame base plate 3 by M12 countersunk bolts with a spacing of 100-150mm. The polyurethane elastomer has a dynamic modulus of 15 MPa and a loss factor of 0.15; the neoprene rubber has a tensile strength of ≥18 MPa and an elongation at break of ≥400%. Limiting bosses with a height of 5mm are set at the four corners of the damping plate 4 to prevent the mounting plate 7 from shifting laterally. The anti-slip screw 10 and anti-slip groove 8 use fine-pitch M12×1.25 threads, with a pitch 0.5mm smaller than the main thread (M12×1.75). The inner diameter of the anti-slip cylinder 9 is 0.2-0.3mm larger than the major diameter of the anti-slip screw 10, and the reverse thread lead is 1.2 times that of the forward thread. The limiting post 17 is made of 40Cr alloy steel, with a diameter of 8mm and a length of 25mm. The spiral groove 18 has a lead of 20mm and a groove depth of 2mm. The fastening nut 20 is a grade 10 high-strength nut, the annular groove 11 is 6mm wide and 3mm deep; the end of the limiting post 17 is a hemispherical shape with a radius of 3mm, and the gap between it and the annular groove 11 is 0.1-0.2mm. A 15mm diameter anti-loosening washer with a phosphated surface and a friction coefficient of 0.15-0.20 should be installed at the top of the anti-loosening screw 10.
[0016] In some technical solutions, the inner wall of the anti-detachment cylinder 9 is provided with a reverse internal thread 19, and the outer part of the anti-detachment screw 10 that fits with the anti-detachment cylinder 9 is provided with a reverse external thread, and the reverse internal thread 19 and the reverse external thread are matched.
[0017] In some technical solutions, the outer wall of the universal fastening nut 20 is provided with an annular groove 11, and the end of the limiting post 17 is set in the annular groove 11.
[0018] In some technical solutions, a retaining ring 12 is fixedly installed on the upper outer end of the fastening screw 21, and an annular pressure plate 14, a spring 16, and an annular rubber sheet 15 are fitted onto the circumferential surface of the fastening screw 21. A compression block 13 is fixedly installed at the lower edge of the annular pressure plate 14.
[0019] The annular pressure plate 14 is made of 65Mn spring steel, with a thickness of 5mm, an outer diameter of 40mm, and an inner diameter of 14mm; the spring 16 is a cylindrical helical compression spring with a mean diameter of 25mm, 5 effective turns, and is made of 50CrVA with a stiffness of 30N / mm; the annular rubber sheet 15 is made of fluororubber, with a thickness of 2mm, an inner diameter of 14mm, an outer diameter of 45mm, and a hardness of 75 Shore A. The extrusion block 13 has a frustum-shaped structure with a height of 3mm, a bottom diameter of 8mm, a top diameter of 5mm, and is made of 304 stainless steel. Spring 16 has a pre-compression of 10mm, generating a preload of 300N; when the annular rubber sheet 15 has a compression rate of 20%, the lateral friction force is ≥150N. Three evenly distributed anti-slip protrusions with a height of 0.5 mm and a diameter of 2 mm are provided on the upper surface of the annular pressure plate 14.
[0020] In some technical solutions, a bearing block 22 is attached to the side wall of the anti-detachment cylinder 9, an elastic rod 23 is installed at the top of the bearing block 22, and a fixing port 24 is opened at the bottom of the limiting post 17, and the top of the elastic rod 23 is fixed in the fixing port 24.
[0021] The bearing block 22 is made of ZCuSn10Pb1 tin bronze, with dimensions of 20mm × 15mm × 10mm, and is fixed to the anti-detachment sleeve 9 by M6 countersunk bolts. The elastic rod 23 is cylindrical, with a diameter of 5mm and a length of 15mm, made of 60Si2Mn spring steel, and has a galvanized surface. The fixing port 24 is a blind hole with a diameter of 5.2mm, a depth of 8mm, and an inner surface roughness of Ra 1.6μm. The elastic rod 23 has a flexural modulus of 200 GPa and a yield strength of ≥1200 MPa; after assembly, the elastic rod 23 has a pre-bending angle of 5° and generates a lateral force of 5-8 N. A rubber buffer pad with a thickness of 1mm and a hardness of 60 Shore A is installed at the bottom of the fixing port 24.
[0022] In some technical solutions, a heat dissipation frame 2 is mounted on the top of the frame-shaped base plate 3, and the starter battery box 1 is mounted inside the heat dissipation frame 2.
[0023] The heat sink frame 2 is made of 6063 aluminum alloy profile with a wall thickness of 3mm and a height of 50mm. It contains eight evenly distributed heat dissipation fins, each 2mm thick, 40mm high, and spaced 10mm apart. The heat sink frame 2 is connected to the frame-shaped base plate 3 via thermally conductive silicone (thermal conductivity ≥2.0W / m・K), with a contact thermal resistance ≤0.1℃・W⁻¹. The outer frame of heat dissipation frame 2 has the same dimensions as the frame-shaped base plate 3, and the inner frame dimensions are 470mm×370mm; the effective heat dissipation area of the heat dissipation fins is ≥0.15m². Six ventilation holes with a diameter of 10mm are opened on the side of the heat sink frame 2, arranged in two rows and three columns, with a ventilation rate of ≥8%.
[0024] Working principle: When installing the starting lithium battery for heavy-duty trucks, first, fix the starting battery box to the frame base plate using M10×40 bolts with a preload of 60-80 N·m via the bottom L-shaped connecting plate. The nitrile rubber shock-absorbing pads (3-5 mm thick, Shore A hardness 60-70, compression set ≤20%) between them provide initial vibration damping. The frame base plate is made of 6-8 mm thick Q345 high-strength steel, providing stable support for the battery box. A 10-15 mm space is reserved inside to avoid hard contact during battery box installation. Subsequently, the composite damping plate is installed under the frame-shaped base plate. The damping plate consists of a 10mm thick polyurethane elastomer (hardness 85 Shore A, dynamic modulus 15MPa, loss factor 0.15), a 5mm thick steel plate in the middle, and an 8mm thick neoprene rubber (hardness 70 Shore A, tensile strength ≥18MPa, elongation at break ≥400%) bonded together via a hot vulcanization process, effectively absorbing vibrations during vehicle operation. The damping plate is connected to the frame-shaped base plate with M12 countersunk bolts at 100-150mm intervals. Limiting bosses at the four corners (5mm high) prevent lateral displacement of the mounting plate, further ensuring the stability of the damping effect. Next, install the fasteners. Pass the fastening screw through the mounting hole of the mounting plate, and screw the anti-loosening screw into the anti-loosening groove at the bottom of the fastening screw (both use fine-pitch M12×1.25 threads). Then, put the anti-loosening sleeve over the anti-loosening screw. The reverse internal thread (lead 1.2 times that of the forward thread) on the inner wall of the anti-loosening sleeve mates with the reverse external thread of the anti-loosening screw. When the vehicle vibrates, this reverse thread structure will make the anti-loosening sleeve and anti-loosening screw tighten more and more with vibration. The spiral groove (lead 20mm, groove depth 2mm) on the inner wall of the limiting post (made of 40Cr alloy steel, diameter 8mm, length 25mm) mates with the fastening screw, and the hemispherical structure (radius 3mm) at the end is placed in the annular groove (width 6mm, depth 3mm) of the fastening nut, forming a multiple fastening mechanism. After the fastening nut is tightened, the annular pressure plate, spring, and annular rubber sheet take effect. An annular pressure plate made of 65Mn spring steel (5mm thickness, 40mm outer diameter, 14mm inner diameter) is used in conjunction with a 2mm thick fluororubber annular rubber sheet (75 Shore A hardness, ≥150N lateral friction at 20% compression rate) to enhance the fixing effect through an extrusion block (frustum conical structure, 3mm height, 8mm bottom diameter, 5mm top diameter) to ensure that the mounting plate is firmly connected to the vehicle mounting location. During vehicle operation, vibrations from road bumps are transmitted to the damping plates. The polyurethane elastomer and neoprene rubber absorb the vibration energy through their elastic deformation. The polyurethane elastomer, with a loss factor of 0.15, effectively converts vibration energy into heat. The middle steel plate provides structural support, preventing excessive deformation of the rubber. Simultaneously, the anti-detachment sleeve and anti-detachment screw's reverse thread engagement further tightens under vibration. The engagement of the limit post and the annular groove of the fastening nut, along with the spiral groove and the fastening screw, prevents the fasteners from loosening, ensuring a secure installation of the starter battery box. For heat dissipation, the starting battery compartment is installed within a heat dissipation frame at the top of the frame-shaped base plate. The heat dissipation frame is made of 6063 aluminum alloy (3mm wall thickness, 50mm height), and its internal eight evenly distributed heat dissipation fins (2mm thickness, 40mm height, 10mm spacing) significantly increase the heat dissipation area (effective heat dissipation area ≥0.15m²). Six 10mm diameter ventilation holes on the side (ventilation rate ≥8%) promote airflow. Thermally conductive silicone (thermal conductivity ≥2.0W / m・K, contact thermal resistance ≤0.1℃・W⁻¹) quickly conducts the heat generated by the battery compartment to the heat dissipation frame, which then dissipates it promptly through air convection, ensuring the lithium battery operates at a suitable temperature and improving its performance and safety.
[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0026] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. An installation structure for a heavy-duty truck starting lithium battery, comprising a starting battery box (1), characterized in that, The bottom of the starting battery box (1) is equipped with a frame-shaped base plate (3), and a shock-absorbing plate (4) is installed at the bottom of the frame-shaped base plate (3). Mounting plates (7) are installed at the four corners of the bottom of the shock-absorbing plate (4). The mounting plate (7) has two mounting holes (5) on its side wall, and fasteners (6) are installed inside the mounting holes (5). The fastener (6) includes a fastening screw (21) and an anti-loosening screw (10), and a fastening nut (20) is screwed onto the outside of the fastening screw (21). The bottom end of the fastening screw (21) is provided with an anti-loosening screw groove (8), and the anti-loosening screw (10) is screwed into the anti-loosening screw groove (8); The anti-detachment screw (10) is sleeved with an anti-detachment cylinder (9), and the outer wall of the anti-detachment cylinder (9) is equipped with three limiting posts (17), which are arranged in a triangular pattern. Each of the limiting posts (17) has a spiral groove (18) on its inner wall that cooperates with the fastening screw (21).
2. The mounting structure for a heavy-duty truck starting lithium battery according to claim 1, characterized in that, The inner wall of the anti-detachment cylinder (9) is provided with a reverse internal thread (19), and the outer part of the anti-detachment screw (10) is provided with a reverse external thread at the contact point with the anti-detachment cylinder (9), and the reverse internal thread (19) and the reverse external thread are matched.
3. The mounting structure for a heavy-duty truck starting lithium battery according to claim 2, characterized in that, The outer wall of the fastening nut (20) is provided with an annular groove (11), and the end of the limiting post (17) is located in the annular groove (11).
4. The mounting structure for a heavy-duty truck starting lithium battery according to claim 1, characterized in that, A fixing ring (12) is fixedly installed on the upper outer end of the fastening screw (21). An annular pressure plate (14), a spring (16) and an annular rubber sheet (15) are fitted on the circumferential surface of the fastening screw (21). An extrusion block (13) is fixedly installed at the lower edge of the annular pressure plate (14).
5. The mounting structure for a heavy-duty truck starting lithium battery according to claim 1, characterized in that, The side wall of the anti-detachment cylinder (9) is fitted with a bearing block (22), and an elastic rod (23) is installed at the top of the bearing block (22). The bottom end of the limiting post (17) is opened with a fixing port (24), and the top end of the elastic rod (23) is fixed in the fixing port (24).
6. The mounting structure for a heavy-duty truck starting lithium battery according to claim 1, characterized in that, The top of the frame-shaped base plate (3) is equipped with a heat dissipation frame (2), and the starter battery box (1) is installed inside the heat dissipation frame (2).