A stackable battery pack case

Abstract

The application relates to a battery pack box capable of stable stacking in the technical field of batteries, which comprises a base, the top of the base is stacked with a plurality of battery box bodies, the top of the battery box body is stacked with an inverter, the bottom of the inverter is provided with a quick plug joint between the top of the battery box body and two adjacent battery box bodies, the bottom periphery of the battery box body and the bottom periphery of the inverter are both installed with a buffer layer, and the bottom of the battery box body is provided with an air bag type buffer assembly. The application realizes sufficient positioning of each layer structure, prevents relative displacement between the layers, makes it unnecessary to remove too many fixed components when a single module is overhauled or replaced, greatly shortens the operation and maintenance time, improves the work efficiency, reduces the vibration acceleration peak value to below the tolerance threshold of the battery module through the three-stage buffer synergistic effect, and remarkably prolongs the cyclic service life.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more particularly to a battery pack that can be stably stacked. Background Technology

[0002] Stacked battery packs, also known as stacked energy storage systems, are energy storage solutions that combine multiple energy storage units (such as battery modules and supercapacitor banks) in a "stacked" manner through modular design. They integrate batteries, inverters, and management systems into a single unit, simplifying installation and reducing footprint. Furthermore, through standardized interfaces and control systems, they enable flexible expansion of energy storage capacity and power, while improving system reliability, efficiency, and ease of maintenance. Each energy storage unit has independent energy storage, monitoring, and control functions, and can be flexibly combined like "building blocks," adjusting the total capacity (kWh) and power (kW) as needed. For example, a basic module with a capacity of 100kWh can achieve a total capacity of 1MWh by stacking 10 modules, suitable for various application scenarios such as telecommunications base stations and renewable energy storage. Existing battery packs, when stacked, generally lack effective positioning and fixing structures. When subjected to external vibrations or collisions, the stacked battery packs are unstable, prone to displacement and tipping, which not only affects normal use but may also cause safety accidents.

[0003] To address the instability issues of existing battery packs, a battery pack stacking and fixing system on the market employs a direct fixing method to reinforce multi-layer battery packs. For example, patent announcement number CN119481514B describes a battery pack stacking and fixing system and method. The system includes multiple battery pack assemblies and several first support assemblies. There is a gap between adjacent battery pack assemblies. The support plates of the battery pack assemblies are detachably connected to the battery pack body. The number of first support assemblies is less than the number of battery pack assemblies. The multiple battery pack assemblies and several first support assemblies are arranged sequentially along a first direction. The first support assemblies and support plates are staggered sequentially. In each first support assembly, a second support unit is located between two first support units. The second support unit is fixedly connected to each of the two first support units. The first support assembly is wavy. Each first support unit is detachably connected to its two adjacent support plates. The second support unit is also detachably connected to its two adjacent support plates. This solves the problem of how to install and fix the battery pack.

[0004] Based on the aforementioned patents, the existing technology has the following shortcomings: The existing technology uses a direct fixing method to ensure the stability of stacked batteries. However, direct fixing is inconvenient for disassembly and assembly. When it is necessary to inspect the stacked battery pack or replace a single module, multiple fixing components often need to be removed, which is cumbersome and time-consuming, seriously affecting maintenance efficiency. Moreover, when external vibration occurs, the direct fixing method lacks effective buffering and shock absorption capabilities. The impact force generated by the vibration is directly transmitted to the battery module, which can easily damage the internal structure of the battery, affecting its performance and lifespan, and may even cause safety hazards such as battery leakage and short circuits. It cannot provide reliable safety protection for stacked battery packs. Therefore, there is an urgent need to propose a stable stackable battery pack to improve the above problems. Summary of the Invention

[0005] To address the above problems, the present invention provides a stably stackable battery pack, comprising:

[0006] The base has multiple battery boxes stacked on top of it, and inverters are stacked on top of the battery boxes. Quick-connect connectors are provided between the bottom of the inverters and the top of the battery boxes, as well as between two adjacent battery boxes.

[0007] Buffer layers are installed around the bottom of the battery box and around the bottom of the inverter.

[0008] The bottom of the battery box body is provided with an airbag-type buffer assembly, and the airbag-type buffer assembly includes a fixed frame installed at the corner of the inner wall of the battery box body. The fixed frame has a circular cavity inside, and an airbag cylinder is installed on the top of the inner wall of the circular cavity. An inflation assembly is provided between the airbag cylinders. The bottom of the circular cavity has a through-hole that passes through the fixed frame and the bottom of the battery box body. A movable hoop is installed on the bottom of the airbag cylinder. A movable seat that passes through the through-hole is fixed on the bottom of the movable hoop. The top of the buffer layer has openings around the perimeter for the bottom of the movable seat to be inserted. A first buffer pad is installed on the bottom of the movable seat.

[0009] Reinforcing mechanisms are provided on the top two sides of the base and between the battery box body and the two sides of the inverter.

[0010] The base and reinforcement mechanism are equipped with heat dissipation components;

[0011] Positioning components and elastic pin components are provided at the bottom of the inverter and the top of the battery box body, between two adjacent battery boxes, and between the bottom of the battery box body and the top of the base.

[0012] The invention is further configured such that the inflation assembly includes an air pipe fixedly connected between the two ends of the four airbag cylinders, and a micro air pump is installed on one side of the bottom inner wall of the battery box body, with the exhaust end of the micro air pump fixedly connected to the air pipe.

[0013] The invention is further configured such that the reinforcing mechanism includes placement slots on both sides of the top of the base, and a rotating frame is hinged to the inner wall of each placement slot. A telescopic frame is inserted into the inner wall of each rotating frame, and the cross-sections of both the telescopic frame and the rotating frame are designed as U-shapes. Limiting slots are provided on both sides of the inner wall of the rotating frame, and limiting blocks inserted into the top of the inner wall of the limiting slot are fixed to the bottom of both sides of the outer wall of the telescopic frame. Slots are provided at both ends of the battery box body and both ends of the inverter, and the rotating frame and the telescopic frame are snapped into the slots. Reinforcing holes are provided at the top of the inner wall of each slot at both ends of the inverter, and connecting holes are provided on one side of the top of each of the two telescopic frames. A reinforcing pin is inserted into the inner wall of the connecting hole, and one end of the reinforcing pin is inserted into the connecting hole. A fixing ring is fixed to one side of the outer wall of the reinforcing pin, and a first spring is installed on one side of the fixing ring and the inner wall of the telescopic frame. A handle frame is fixed to the other end of the reinforcing pin.

[0014] The invention is further configured such that the heat dissipation assembly includes a flexible tube installed at the bottom of one end of the rotating frame, and the bottom inner walls of both placement slots are provided with tube holes for the flexible tube to pass through. One end of one of the flexible tubes is fixed with an exhaust pipe, and the top of the exhaust pipe and the bottom of the base are fitted with a reinforcing base. A cooling fan is installed on one side of the bottom of the base, and the exhaust end of the cooling fan and the other flexible tube are fitted with a duct. Ventilation slots communicating with the card slots are provided on both sides of the battery box body and both sides of the inverter, and the rotating frame and the telescopic frame are wrapped around the outside of the ventilation slots.

[0015] The invention is further configured such that the inner wall of the telescopic frame near the cooling fan is equipped with equally spaced air distribution inclined plates.

[0016] The present invention is further configured such that the buffer layer is a honeycomb metal layer, and the honeycomb pores of the buffer layer are all filled with PCM phase change material.

[0017] The present invention is further configured such that the two reinforcing mechanisms are centrally symmetrically distributed about the center of the base, and brake casters are installed at the four corners of the bottom of the base.

[0018] The present invention is further configured such that the positioning component includes positioning grooves formed at the middle of the bottom of the battery box body and at the middle of the bottom of the inverter, and insert frames inserted into the positioning grooves are installed at the middle of the top of the base and at the middle of the top of the battery box body.

[0019] The invention is further configured such that a plurality of damping shock absorbers are installed on the bottom inner wall of the insert frame, and a magnetic suction plate inserted into the positioning groove is installed on the top of the damping shock absorber. The top of the magnetic suction plate is magnetically attracted to the top of the positioning groove. Anti-detachment grooves are provided on the inner walls of both ends of the insert frame, and L-shaped limiting plates are fixed on both sides of the bottom of the magnetic suction plate. The L-shaped end of the L-shaped limiting plate is inserted into the anti-detachment groove. A second buffer pad is fixed around the bottom of the magnetic suction plate, and the second buffer pad is attached to the top of the insert frame.

[0020] The invention is further configured such that the elastic pin assembly includes positioning slots at the four bottom corners of the battery box body and the four bottom corners of the inverter, and positioning sockets that are inserted into the positioning slots are fixed at the four top corners of the battery box body and the four top corners of the base. The positioning sockets are provided with connecting grooves around their perimeter, and auxiliary locking teeth are inserted into the inner walls of the connecting grooves. A second spring is installed at one end of the auxiliary locking teeth and one end of the connecting groove. The inner walls of the positioning slots are provided with tooth grooves around their perimeter, and a magnetic block is installed at one end of the inner wall of the tooth groove. The auxiliary locking teeth are inserted into the tooth grooves by the attraction of the magnetic block. The cross-section of the tooth grooves is designed to be triangular. A third buffer pad that fits against the inner wall of the top of the positioning socket is installed on the top of the positioning socket.

[0021] In summary, by adopting the above structure, the present invention has the following advantages compared with the prior art:

[0022] 1. In terms of stable stacking and portable assembly / disassembly, the positioning component and the elastic pin component play a crucial role in this invention. Through the precise insertion of the positioning slot and the insertion frame, combined with the magnetic adsorption of the magnetic plate, the initial positioning of each layer can be quickly achieved. In the elastic pin component, the auxiliary locking teeth, under the combined action of the elastic potential energy of the second spring and the magnetic attraction of the magnetic block, form a wedge-shaped self-locking structure with the tooth groove, significantly improving the interlayer shear resistance and further enhancing the stability of the stack, effectively preventing relative displacement between layers. Simultaneously, the reinforcement mechanism, through the locking of the rotating frame and the telescopic frame within the slot, combined with the fixing of the reinforcement pin, reinforces the entire stacked structure from both sides, greatly improving the overall anti-tipping ability and keeping the displacement of the overall structure under dynamic load within a safe threshold. Even under external impact or vibration, the stability of the stacked structure can be guaranteed, reducing the risk of safety accidents. It also enables rapid assembly / disassembly. Compared to the direct fixing method used in existing technologies, the above design eliminates the need to remove too many fixing components when inspecting or replacing a single module, greatly shortening maintenance time and improving work efficiency.

[0023] 2. In terms of shock absorption and cushioning performance, this invention employs a multi-stage energy absorption mechanism. A honeycomb metal buffer layer utilizes the plastic deformation characteristics of its cellular structure to achieve primary cushioning. The internally filled PCM phase change material, through solid-liquid phase change latent heat exchange, also provides thermal cushioning, not only buffering impact forces but also regulating temperature changes. Furthermore, the airbag-type buffer assembly uses a micro-pump-driven airbag cylinder for air pressure regulation, forming a secondary elastic buffer in conjunction with the first buffer pad at the bottom of the movable seat. The stiffness coefficient can be dynamically adjusted according to the load. When there is stacking misalignment or lateral impact, the airbag automatically inflates to fill the gaps, providing dynamic support. This independent vertical and lateral buffering design can simultaneously cope with multi-directional impacts, significantly improving shock resistance compared to traditional single-spring structures. Simultaneously, the damping shock absorber in the positioning component and the second buffer pad constitute a viscoelastic damping system, effectively attenuating low-frequency vibration energy. Through the synergistic effect of the three-stage buffering, the peak vibration acceleration is reduced to below the battery module's tolerance threshold, significantly extending the cycle life.

[0024] 3. In terms of thermal management efficiency, this invention features efficient airflow organization. When the reinforcement mechanism is working, the heat dissipation components are kept unobstructed. At this time, the cooling fan forms a distributed air supply system through the air duct and hose. The cooling fan, air duct, and hose deliver cold air to the rotating frame and telescopic frame, and then enter the battery box body and inverter through the ventilation slot. At the same time, the hose and exhaust pipe on the other side exhaust hot air, forming a good air circulation. The setting of the air distribution slope plate can make the cold air more evenly distributed, improve the heat dissipation efficiency, and effectively dissipate heat to prevent the battery from being affected by excessive temperature, or even causing safety problems, thus ensuring the stable operation of the entire system. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of a stably stackable battery pack box according to the present invention;

[0026] Figure 2 This is a perspective cross-sectional view of a stably stackable battery pack according to the present invention.

[0027] Figure 3 This is a schematic diagram of a reinforcement mechanism for a stably stackable battery pack according to the present invention.

[0028] Figure 4 This is a schematic diagram of the cooling fan and hose structure of a stably stackable battery pack according to the present invention.

[0029] Figure 5 This is a schematic diagram of the first spring and air-fabricated inclined plate structure of a stably stackable battery pack box according to the present invention.

[0030] Figure 6This is a schematic diagram of the ventilation slot and quick-connect connector structure of a stably stackable battery pack according to the present invention.

[0031] Figure 7 This is a schematic diagram of the positioning groove and positioning slot structure of a stably stackable battery pack box according to the present invention;

[0032] Figure 8 This is a cross-sectional view of the battery pack body of a stably stackable battery pack box according to the present invention.

[0033] Figure 9 This is a schematic diagram of the opening and PCM phase change material structure of a stably stackable battery pack according to the present invention.

[0034] Figure 10 This is a schematic diagram of the reinforcement hole structure of a stably stackable battery pack according to the present invention;

[0035] Figure 11 This is a schematic diagram of an airbag-type buffer assembly structure for a stably stackable battery pack according to the present invention.

[0036] Figure 12 This is a front sectional view of the fixing frame of a stably stackable battery pack box according to the present invention.

[0037] Figure 13 This is a schematic diagram of the positioning component structure of a stably stackable battery pack according to the present invention.

[0038] Figure 14 This is a schematic diagram of the elastic pin assembly structure of a stably stackable battery pack according to the present invention.

[0039] Explanation of the labels in the diagram:

[0040] 1. Base; 2. Heat dissipation assembly; 21. Reinforcing base; 22. Exhaust duct; 23. Flexible hose; 24. Cooling fan; 25. Air duct; 26. Pipe hole; 27. Air distribution ramp; 28. Ventilation slot; 3. Battery box body; 4. Buffer layer; 5. Inverter; 6. Reinforcing mechanism; 61. Placement slot; 62. Rotating frame; 63. Telescopic frame; 64. Reinforcing pin; 65. Limiting slot; 66. Limiting block; 67. Handle frame; 68. First spring; 69. Slot; 610. Reinforcing hole; 7. Brake caster wheel; 8. Airbag-type buffer assembly; 81. Fixed frame; 82. Airbag cylinder; 83. Movable... 84. Seat; 85. First buffer pad; 86. Through port; 87. Air tube; 88. Miniature air pump; 89. Circular cavity; 90. Movable hoop; 91. Positioning assembly; 92. Insert frame; 93. Second buffer pad; 94. Magnetic suction plate; 95. Positioning groove; 96. Damping shock absorber; 97. L-shaped limit plate; 10. Anti-detachment groove; 10. Elastic pin assembly; 101. Positioning slot; 102. Tooth groove; 103. Positioning socket; 104. Connecting groove; 105. Auxiliary locking tooth; 106. Second spring; 107. Third buffer pad; 108. Magnetic block; 11. Quick-connect connector; 12. PCM phase change material. Detailed Implementation

[0041] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0042] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0044] Please see Figures 1-14 The present invention provides a stably stackable battery pack, comprising:

[0045] The base 1 has multiple battery box bodies 3 stacked on top of it, and inverters 5 are stacked on top of the battery box bodies 3. Quick-connect connectors 11 are provided between the bottom of the inverters 5 and the top of the battery box bodies 3, as well as between two adjacent battery box bodies 3.

[0046] A buffer layer 4 is installed around the bottom of the battery box body 3 and around the bottom of the inverter 5. The buffer layer 4 is a honeycomb metal layer, and the honeycomb holes of the buffer layer 4 are filled with PCM phase change material 12. The honeycomb metal buffer layer utilizes the plastic deformation characteristics of the cell structure to achieve primary buffering. The PCM phase change material 12 filled inside has a thermal buffering function through solid-liquid phase change latent heat exchange. It can not only buffer the impact force, but also play a regulating role when the temperature changes.

[0047] Each battery box body 3 has an airbag-type buffer assembly 8 at its bottom. The airbag-type buffer assembly 8 includes a fixing frame 81 installed at the corner of the inner wall of the battery box body 3. Each fixing frame 81 has a circular cavity 88 inside. An airbag cylinder 82 is installed on the top of the inner wall of each circular cavity 88. An inflation assembly is installed between the airbag cylinders 82. The inflation assembly includes an air pipe 86 fixedly connected between the two ends of the four airbag cylinders 82. A miniature air pump 87 is installed on one side of the bottom inner wall of each battery box body 3. The exhaust end of the miniature air pump 87 is fixedly connected to the air pipe 86. The bottom of each circular cavity 88 has an opening that penetrates the fixing frame 81 and the bottom of the battery box body 3. A movable airbag is installed at the bottom of each airbag cylinder 82. The movable hoop 89 has a movable seat 83 fixed at its bottom, which passes through the opening. The top of the buffer layer 4 has openings 85 around the perimeter for the bottom of the movable seat 83 to be inserted. The bottom of the movable seat 83 is equipped with a first buffer pad 84. The airbag buffer assembly 8 uses an airbag cylinder 82 driven by a micro air pump 87 to achieve air pressure regulation. Together with the first buffer pad 84 at the bottom of the movable seat 83, it forms a two-stage elastic buffer. The stiffness coefficient can be dynamically adjusted according to the load. Furthermore, when the stack is misaligned or subjected to lateral impact, the airbag automatically inflates to fill the gap and provides dynamic support. Thus, the independent buffer design in the vertical and lateral directions can simultaneously cope with multi-directional impacts, significantly improving the seismic performance compared to the traditional single spring structure.

[0048] A reinforcing mechanism 6 is provided between the top two sides of the base 1 and between the battery box body 3 and the two sides of the inverter 5.

[0049] Heat dissipation components 2 are provided on the base 1 and the reinforcing mechanism 6;

[0050] Positioning components 9 and elastic pin components 10 are provided at the bottom of the inverter 5 and the top of the battery box body 3, between two adjacent battery box bodies 3, and between the bottom of the battery box body 3 and the top of the base 1. The positioning component 9 includes a positioning groove 94 opened at the middle of the bottom of the battery box body 3 and the middle of the bottom of the inverter 5. A frame 91 inserted into the positioning groove 94 is installed at the middle of the top of the base 1 and the middle of the top of the battery box body 3. Multiple damping shock absorbers 95 are installed on the inner wall of the bottom of the frame 91, and a magnetic suction plate 93 inserted into the positioning groove 94 is installed on the top of each damping shock absorber 95. The top of the positioning groove 94 is magnetically attracted. Anti-detachment grooves 97 are provided on the inner walls of both ends of the insertion frame 91. L-shaped limiting plates 96 are fixed to both sides of the bottom of the magnetic suction plate 93, with the L-shaped ends of the limiting plates 96 inserted into the anti-detachment grooves 97. A second buffer pad 92 is fixed around the bottom of the magnetic suction plate 93, and the second buffer pad 92 is attached to the top of the insertion frame 91. The elastic pin assembly 10 includes positioning slots 101 at the four bottom corners of the battery box body 3 and the four bottom corners of the inverter 5. Positioning sockets 103, which are inserted into the positioning slots 101, are fixed at the four top corners of the battery box body 3 and the four top corners of the base 1. The positioning slot 101 has connecting grooves 104 on all four sides, and auxiliary locking teeth 105 are inserted into the inner walls of the connecting grooves 104. A second spring 106 is installed at one end of the auxiliary locking teeth 105 and one end of the connecting groove 104. The positioning slot 101 has toothed grooves 102 on all four sides of its inner walls, and a magnetic block 108 is installed at one end of the inner wall of the toothed groove 102. The auxiliary locking teeth 105 are inserted into the toothed grooves 102 by the attraction of the magnetic block 108. The cross-section of the toothed groove 102 is designed to be triangular. A third buffer pad 107 is installed on the top of the positioning socket 103, which fits against the inner wall of the top of the positioning slot 101. The third buffer pad 107, the second buffer pad 92 and the first buffer pad 106 are connected together. All the pads 84 are designed as thermoplastic elastomers. Through the precise insertion of the positioning groove 94 and the insertion frame 91, combined with the magnetic adsorption of the magnetic suction plate 93, the initial positioning of each layer structure can be quickly achieved. In the elastic pin assembly 10, the auxiliary locking teeth 105, under the combined action of the elastic potential energy of the second spring 106 and the magnetic attraction of the magnetic block 108, form a wedge-shaped self-locking structure with the tooth groove 102, which significantly improves the interlayer shear resistance and further enhances the stability of the stack. It effectively prevents relative displacement between layers. At the same time, it also allows for the maintenance or replacement of a single module without removing too many fixed parts, greatly shortening the maintenance time and improving work efficiency.

[0051] In this invention, the reinforcement mechanism 6 includes placement slots 61 on both sides of the top of the base 1, and a rotating frame 62 is hinged to the inner wall of each placement slot 61. A telescopic frame 63 is inserted into the inner wall of each rotating frame 62, and the cross-sections of the telescopic frame 63 and the rotating frame 62 are both designed to be U-shaped. Limiting slots 65 are provided on both sides of the inner wall of the rotating frame 62, and limiting blocks 66 inserted into the top of the inner wall of the limiting slot 65 are fixed to the bottom of both sides of the outer wall of the telescopic frame 63. Slots 69 are provided at both ends of the battery box body 3 and both ends of the inverter 5, and the rotating frame 62 and the telescopic frame 63 are engaged in the slots 69. Reinforcement holes 610 are provided on the top of the inner wall of the slots 69 at both ends of the inverter 5, and the two telescopic frames 63 are engaged in the slots 69. Connection holes are provided on the top of one side of the 3. A reinforcing pin 64 is inserted into the inner wall of the connection hole. One end of the reinforcing pin 64 is inserted into the connection hole. A fixing ring is fixed on one side of the outer wall of the reinforcing pin 64. A first spring 68 is installed on one side of the fixing ring and the inner wall of the telescopic frame 63. A handle frame 67 is fixed to the other end of the reinforcing pin 64. The rotating frame 62 and the telescopic frame 63 in the reinforcing mechanism 6 are engaged in the slot 69. Combined with the fixing of the reinforcing pin 64, the entire stacked structure is reinforced from both sides, which greatly improves the overall anti-tipping ability and keeps the displacement of the overall structure under dynamic load within the safe threshold. Even if it is subjected to external force collision or vibration, the stability of the stacked structure can be guaranteed.

[0052] In this invention, the heat dissipation assembly 2 includes a flexible hose 23 installed at the bottom of one end of the rotating frame 62, and the inner walls of the bottom of both placement slots 61 are provided with pipe holes 26 for the flexible hose 23 to pass through. One end of one flexible hose 23 is fixed with an exhaust pipe 22, and the top of the exhaust pipe 22 and the bottom of the base 1 are equipped with a reinforcing base 21. A cooling fan 24 is installed on one side of the bottom of the base 1, and the exhaust end of the cooling fan 24 and the end of the other flexible hose 23 are connected with a duct 25. Ventilation slots 28 communicating with the slot 69 are provided on both sides of the battery box body 3 and both sides of the inverter 5, and the rotating frame 62 and the telescopic frame 63 are wrapped around the outside of the ventilation slots 28. The inner wall of the telescopic frame 63 near the cooling fan 24 is equipped with a... The spaced air distribution ramps 27 and the two reinforcement mechanisms 6 are centrally symmetrically distributed around the center of the base 1. Each of the four corners of the base 1 is equipped with a brake caster 7. When the reinforcement mechanism 6 is working, the heat dissipation assembly 2 ensures unobstructed flow. Cool air is delivered to the rotating frame 62 and the telescopic frame 63 by the cooling fan 24, the air duct 25 and the hose 23, and then enters the battery box body 3 and the inverter 5 through the ventilation slot 28. At the same time, the hose 23 and the exhaust pipe 22 on the other side exhaust the hot air, forming a good air circulation. The air distribution ramps 27 can make the cool air more evenly distributed, effectively dissipating heat and preventing the battery from being affected by excessive temperature, which could even cause safety problems and ensure the stable operation of the entire system.

[0053] In summary, the working principle of this invention is as follows: during stacking, multiple battery box bodies 3 and an inverter 5 are stacked sequentially on top of the base 1, and adjacent components are quickly electrically connected through quick-connect connectors 11.

[0054] The positioning component 9 ensures accurate stacking, allowing the insertion frame 91 at the top of the base 1 and the top of the battery box body 3 to be inserted into the positioning groove 94 at the bottom of the upper battery box body 3 and the inverter 5. The magnetic suction plate 93 inside the insertion frame 91 is magnetically attracted to the top of the positioning groove 94. The damping shock absorber 95 and the second buffer pad 92 further enhance the positioning stability and buffer the vibration. The L-shaped limit plate 96 is inserted into the anti-detachment groove 97 to prevent the magnetic suction plate 93 from detaching. At the same time, the elastic pin assembly 10 assists in fixing, allowing the positioning socket 103 at the top of the battery box body 3 and the base 1 to be inserted into the upper positioning slot 101. The auxiliary locking tooth 105 in the connecting groove 104 is engaged in the tooth groove 102 under the action of the second spring 106 and the magnetic block 108. The third buffer pad 107 reduces contact impact.

[0055] In terms of buffering, the buffer layer 4 at the bottom of the battery box body 3 and the inverter 5 is a honeycomb metal layer. The PCM phase change material 12 filled inside has both buffering and temperature control functions. The airbag buffer component 8 enhances the buffering effect. In the fixed frame 81 at the corner of the inner wall of the battery box body 3, the airbag cylinder 82 is connected to the micro air pump 87 through the air pipe 86. After inflation, the movable seat 83 drives the first buffer pad 84 to move down and insert into the opening 85 of the buffer layer 4, which works with the buffer layer 4 to absorb the impact force generated by stacking and vibration.

[0056] The reinforcement mechanism 6 improves overall stability. The rotating frames 62 on both sides of the top of the base 1 are rotated out of the placement slot 61, and the telescopic frame 63 extends and retracts along the rotating frame 62. The two are inserted into the slots 69 of the battery box body 3 and the inverter 5, and are limited in the limiting slot 65 by the limiting block 66. Then, the reinforcement pin 64 of the top telescopic frame 63 is inserted into the reinforcement hole 610 of the inverter 5. The first spring 68 ensures that the pin is fastened. The handle frame 67 is easy to operate. The symmetrical reinforcement mechanisms 6 on both sides form a stable frame.

[0057] Moreover, heat dissipation is ensured by heat dissipation component 2. The heat dissipation fan 24 at the bottom of the base 1 delivers air through air duct 25 and hose 23. Another hose 23 is connected to exhaust pipe 22 for exhaust. Rotating frame 62 and telescopic frame 63 wrap around the ventilation slots 28 on both sides of the battery box body 3 and inverter 5 to form airflow channels. The air distribution plate 27 optimizes the airflow distribution and achieves efficient heat dissipation.

[0058] Finally, the brake casters 7 at the bottom of the base 1 facilitate overall movement and fixation. The components work together to ensure stable stacking of the battery pack box, convenient disassembly and assembly, reliable cushioning, and efficient heat dissipation.

[0059] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this invention.

Claims

1. A stably stackable battery pack, characterized in that, include: The base (1) has multiple battery box bodies (3) stacked on top of it, and an inverter (5) is stacked on top of the battery box body (3). A quick-connect connector (11) is provided between the bottom of the inverter (5) and the top of the battery box body (3) and between two adjacent battery box bodies (3). A buffer layer (4) is installed around the bottom of the battery box body (3) and around the bottom of the inverter (5). The bottom of the battery box body (3) is provided with an airbag-type buffer assembly (8), and the airbag-type buffer assembly (8) includes a fixed frame (81) installed at the corner of the inner wall of the battery box body (3). The fixed frame (81) is provided with a circular cavity (88), and an airbag cylinder (82) is installed on the top of the inner wall of the circular cavity (88). An inflation assembly is provided between the airbag cylinders (82). The bottom of the circular cavity (88) is provided with a through hole that passes through the fixed frame (81) and the bottom of the battery box body (3). The bottom of the airbag cylinder (82) is provided with a movable hoop (89). The bottom of the movable hoop (89) is fixed with a movable seat (83) that passes through the through hole. The top of the buffer layer (4) is provided with a through hole (85) for the bottom of the movable seat (83) to be inserted. The bottom of the movable seat (83) is provided with a first buffer pad (84). A reinforcing mechanism (6) is provided between the top two sides of the base (1) and between the battery box body (3) and the two sides of the inverter (5). Heat dissipation components (2) are provided on the base (1) and the reinforcement mechanism (6); Positioning components (9) and elastic pin components (10) are provided at the bottom of the inverter (5) and the top of the battery box body (3), between two adjacent battery box bodies (3), and between the bottom of the battery box body (3) and the top of the base (1).

2. The stably stackable battery pack according to claim 1, characterized in that, The inflation assembly includes an air pipe (86) fixedly connected between the two ends of the four airbag cylinders (82), and a micro air pump (87) is installed on one side of the bottom inner wall of the battery box body (3), with the exhaust end of the micro air pump (87) fixedly connected to the air pipe (86).

3. The stably stackable battery pack according to claim 2, characterized in that, The reinforcement mechanism (6) includes placement slots (61) on both sides of the top of the base (1), and the inner walls of the placement slots (61) are hinged with rotating frames (62). The inner walls of the rotating frames (62) are inserted with telescopic frames (63), and the cross sections of the telescopic frames (63) and the rotating frames (62) are both designed to be U-shaped. The inner walls of both sides of the rotating frames (62) are provided with limiting slots (65), and the bottom of the outer walls of both sides of the telescopic frames (63) are fixed with limiting blocks (66) inserted into the top of the inner walls of the limiting slots (65). The two ends of the battery box body (3) and the two ends of the inverter (5) are provided with slots ( 69), and the rotating frame (62) and the telescopic frame (63) are both snapped into the slot (69). The top of the inner wall of the slot (69) located at both ends of the inverter (5) is provided with a reinforcing hole (610), and the top of one side of the two telescopic frames (63) is provided with a connecting hole. A reinforcing pin (64) is inserted into the inner wall of the connecting hole. One end of the reinforcing pin (64) is inserted into the connecting hole. A fixing ring is fixed on one side of the outer wall of the reinforcing pin (64), and a first spring (68) is installed on one side of the fixing ring and the inner wall of the telescopic frame (63). A handle frame (67) is fixed on the other end of the reinforcing pin (64).

4. A stably stackable battery pack according to claim 3, characterized in that, The heat dissipation assembly (2) includes a flexible hose (23) installed at the bottom of one end of the rotating frame (62), and the bottom inner walls of the two placement slots (61) are provided with pipe holes (26) for the flexible hose (23) to pass through. One end of one of the flexible hoses (23) is fixed with an exhaust pipe (22), and the top of the exhaust pipe (22) and the bottom of the base (1) are provided with a reinforcing seat (21). A cooling fan (24) is installed on one side of the bottom of the base (1), and the exhaust end of the cooling fan (24) and the end of the other flexible hose (23) are provided with a duct (25). Ventilation slots (28) communicating with the card slot (69) are provided on both sides of the battery box body (3) and both sides of the inverter (5), and the rotating frame (62) and the telescopic frame (63) are wrapped around the outside of the ventilation slots (28).

5. A stably stackable battery pack according to claim 4, characterized in that, The inner wall of the telescopic frame (63) near the cooling fan (24) is fitted with equally spaced air distribution ramps (27).

6. A stably stackable battery pack according to claim 5, characterized in that, The buffer layer (4) is a honeycomb metal layer, and the honeycomb pores of the buffer layer (4) are filled with PCM phase change material (12).

7. A stably stackable battery pack according to claim 6, characterized in that, The two reinforcement mechanisms (6) are centrally symmetrical about the center of the base (1), and brake casters (7) are installed at the four corners of the bottom of the base (1).

8. A stably stackable battery pack according to claim 7, characterized in that, The positioning component (9) includes a positioning groove (94) opened at the bottom middle of the battery box body (3) and the bottom middle of the inverter (5), and a plug frame (91) inserted into the positioning groove (94) is installed at the top middle of the base (1) and the top middle of the battery box body (3).

9. A stably stackable battery pack according to claim 8, characterized in that, Multiple damping shock absorbers (95) are installed on the bottom inner wall of the insert frame (91), and the top of the damping shock absorber (95) is equipped with the same magnetic suction plate (93) inserted into the positioning groove (94). The top of the magnetic suction plate (93) is magnetically attracted to the top of the positioning groove (94). Anti-detachment grooves (97) are opened on the inner walls of both ends of the insert frame (91), and L-shaped limiting plates (96) are fixed on both sides of the bottom of the magnetic suction plate (93). The L-shaped end of the L-shaped limiting plate (96) is inserted into the anti-detachment groove (97). The same second buffer pad (92) is fixed around the bottom of the magnetic suction plate (93), and the second buffer pad (92) is attached to the top of the insert frame (91).

10. A stably stackable battery pack according to claim 9, characterized in that, The resilient pin assembly (10) includes positioning slots (101) at the four bottom corners of the battery box body (3) and the four bottom corners of the inverter (5), and positioning sockets (103) that are inserted into the positioning slots (101) are fixed at the four top corners of the battery box body (3) and the four top corners of the base (1). The positioning sockets (103) are provided with connecting grooves (104) around their perimeter, and auxiliary locking teeth (105) are inserted into the inner walls of the connecting grooves (104). One end of the auxiliary locking teeth (105) is connected to the connecting groove (104). One end of the 04) is equipped with a second spring (106). The inner walls of the positioning slot (101) are provided with toothed grooves (102). A magnetic block (108) is installed at one end of the inner wall of the toothed groove (102). The auxiliary tooth (105) is inserted into the toothed groove (102) by the attraction of the magnetic block (108). The cross section of the toothed groove (102) is designed as a triangle. The top of the positioning socket (103) is equipped with a third buffer pad (107) that fits against the inner wall of the top of the positioning slot (101).

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