An L-shaped battery facilitating stacking use

Abstract

This utility model discloses an L-shaped battery that is easy to stack, comprising at least two L-shaped battery bodies. Each battery body has a protrusion and a groove that matches the protrusion. Two adjacent battery bodies are stacked and assembled by the matching protrusion and groove. The protrusion is detachably mounted on the battery body, and a limiting component is provided between the stacked protrusion and groove. This L-shaped battery, through the matching of the protrusion and groove, precisely guides alignment and improves stacking efficiency; the detachable protrusion facilitates individual replacement, reducing maintenance costs; the limiting component enhances the connection stability after stacking, prevents separation due to vibration, ensures the reliability of the battery pack structure, and is suitable for multi-layer stacking scenarios.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an L-shaped battery that is easy to stack. Background Technology

[0002] With the development of technology, batteries are widely used. L-shaped batteries are commonly used in specific devices because they can adapt to irregular spaces, but existing products have many problems when stacked. Alignment is difficult, misalignment is common, and efficiency is low. Many protruding components are fixed, requiring complete replacement if damaged, resulting in high maintenance costs. The connection after stacking is unstable and prone to separation due to vibration, affecting reliability. Traditional protrusion-groove structures are simple, but uneven pressure distribution leads to localized wear, making processing difficult and consistency poor. The connection structure lacks sufficient restraint, making it difficult to achieve both vertical and horizontal fixation, and disassembly and reassembly are inconvenient. The limited number and unreasonable distribution of protrusions and grooves cause stress concentration at the L-shaped corners, shortening lifespan. The lack of anti-slip and reinforcement design results in insufficient structural strength, making them prone to slippage during vibration. The locking structure is complex to operate, making it difficult to align connection terminals, increasing assembly process and failure risk, and may even cause circuit connection problems or battery damage. Utility Model Content

[0003] The purpose of this invention is to provide an L-shaped battery that is easy to stack, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an L-shaped battery that is easy to stack, comprising at least two L-shaped battery bodies. Each battery body has a protrusion and a groove that matches the protrusion. Two adjacent battery bodies are stacked and assembled using the matching protrusion and groove. The protrusion is detachably mounted on the battery body, and a limiting component is provided between the stacked protrusion and groove. The shape and position of the protrusion and groove are designed such that when two battery bodies are stacked, the protrusion of one battery body can be embedded into the groove of the other battery body.

[0005] The matching design of the protrusions and recesses precisely guides adjacent battery cells to align and stack, preventing misalignment and improving stacking efficiency. The detachable protrusions facilitate individual replacement and maintenance, reducing costs. The limiting components further enhance the connection stability after stacking, preventing separation due to vibration or other factors during use, ensuring the overall structural reliability of the battery pack, making it particularly suitable for devices requiring multi-layer stacking.

[0006] Furthermore, the protrusion is a cuboid protrusion, and the groove is a cuboid groove adapted to the protrusion. The length direction of the protrusion is consistent with the length direction of the side surface of the battery body.

[0007] The cuboid structure features tightly fitting protrusions and grooves with a large contact area, effectively dispersing pressure during stacking and reducing localized wear. The design, with its length aligned with the battery's side, distributes forces evenly along the battery's sides, enhancing overall load-bearing capacity. Furthermore, the cuboid shape simplifies processing, facilitating mass production, reducing manufacturing costs, and improving product consistency.

[0008] Furthermore, the protrusion includes a bottom block, a top block, and a connecting block. The bottom block and the top block are respectively fixed at opposite ends of the connecting block, and the three form an "I"-shaped structure. The bottom block and the top block are slidably installed in the two battery bodies that are stacked and assembled.

[0009] The protrusions of the "I"-shaped structure are slidably connected to the two battery bodies through the bottom and top blocks, making the stacking process smoother and reducing assembly resistance. This structure can form a two-way limit after stacking, restricting the vertical displacement of the upper and lower batteries and preventing horizontal sliding, which greatly improves the connection firmness. At the same time, the sliding installation method facilitates quick disassembly and reassembly, enhancing the flexibility of the battery pack.

[0010] Furthermore, the number of protrusions and the number of grooves are both set to multiple, and the multiple protrusions and multiple grooves are arranged circumferentially along the outer contour of the battery body, with one-to-one correspondence between the protrusions and the grooves.

[0011] Multiple protrusions and grooves are arranged circumferentially along the outer contour, distributing the forces during stacking to multiple contact points. This prevents damage caused by excessive stress on a single point and extends battery life. The one-to-one correspondence design ensures that each protrusion can be precisely embedded in the groove, restricting the relative movement of the battery body from multiple directions. This improves the overall stability and balance of the stack, making it particularly suitable for asymmetrical structures like the L-shape, effectively counteracting stress concentration at corners.

[0012] Furthermore, the protrusions and grooves are inclinedly disposed on the battery body, and the inclination direction of the protrusions and grooves is parallel to the extension direction of the diagonal at the L-shaped corner of the battery body.

[0013] The protrusions and grooves, angled along the diagonal of the L-shaped corner, conform to the structural stress characteristics of the battery body, effectively dispersing stress at the corner through the angled contact surface and reducing the risk of deformation caused by stacking stress. Simultaneously, the angled design increases the contact length between the protrusions and grooves, improving connection tightness, and the layout parallel to the corner diagonal makes the overall structure more harmonious, enhancing space utilization after stacking.

[0014] Furthermore, the surface of the protrusion is provided with an anti-slip layer, which is made of rubber or silicone material with a high coefficient of friction.

[0015] The anti-slip layer made of rubber or silicone significantly increases the friction between the raised and recessed parts, preventing relative sliding of the battery bodies after stacking, and maintaining structural stability, especially in vibration environments. The high coefficient of friction material also buffers the impact force during stacking, reducing collision wear. At the same time, rubber and silicone have a certain degree of elasticity, which can accommodate slight dimensional errors, improving assembly tolerance and ensuring connection reliability.

[0016] Furthermore, a reinforcing structure is provided at the L-shaped corner of the battery body, and the reinforcing structure is a metal reinforcing rib.

[0017] The L-shaped corner is a structural weak point of the battery body. Metal reinforcing ribs can effectively enhance the structural strength and rigidity of the corner, preventing deformation and cracking due to excessive force during stacking or use. Metal materials have high strength properties, which can improve the impact resistance of the battery body and extend its service life. Especially when multiple layers are stacked, they can better support the weight of the batteries above, ensuring the stability of the overall structure.

[0018] Furthermore, the limiting component includes a locking hole and a locking pin. The locking hole is disposed within the recessed portion, and the locking pin is movably mounted within the mounting hole of the protruding portion. A spring is mounted at the bottom of the locking pin, and the spring is located within the mounting hole. A guide slope is provided at the top of the locking pin, and the guide slope faces the direction in which the protruding portion inserts into the recessed portion.

[0019] The locking pin and locking hole work together to automatically lock the protrusion and the recess, improving stacking efficiency. The guide ramp causes the locking pin to retract automatically when the protrusion is inserted, preventing jamming, while the spring ensures the locking pin automatically pops out and locks in place after insertion, enhancing connection reliability. This structure allows for locking and unlocking without additional tools, making it convenient and suitable for scenarios involving frequent assembly and disassembly.

[0020] Furthermore, the top and bottom of the battery body are provided with connection terminals, and the position of the connection terminals is designed so that the connection terminals of adjacent batteries can be accurately aligned when the batteries are stacked.

[0021] The precise alignment design of the connection terminals enables electrical connection during battery stacking, eliminating the need for additional wiring steps and simplifying the assembly process. It ensures reliable conductivity between the upper and lower batteries, reducing power loss or malfunction risks caused by poor contact, and improving the overall power supply stability of the battery pack. This is particularly suitable for electronic devices requiring a compact layout.

[0022] Furthermore, the metal reinforcing rib is fixedly connected to the battery body by welding, and the thickness of the metal reinforcing rib is 0.5-2mm.

[0023] Welded connections allow the metal reinforcing ribs to form a robust, integrated structure with the battery body, preventing loosening and ensuring a long-lasting and stable reinforcement effect. A thickness of 0.5-2mm enhances corner strength without excessively increasing the weight and volume of the battery body, balancing structural strength with lightweight requirements. This ensures durability while aligning with the trend towards battery miniaturization.

[0024] Compared with existing technologies, the beneficial effects of this utility model are: precise alignment of the protrusions and grooves improves stacking efficiency; the detachable design facilitates replacement and maintenance, reducing costs; the limiting components enhance connection stability and prevent separation. The cuboid structure disperses pressure, reduces wear, and simplifies processing. The "I"-shaped protrusion provides bidirectional limiting, enhancing robustness and facilitating disassembly and reassembly. Multiple protrusions and grooves disperse forces, extending lifespan, and the L-shaped structure counteracts stress concentration. The inclined design disperses corner stress and increases contact length. The anti-slip layer increases friction and buffers impact. Metal reinforcing ribs enhance corner strength. Locking pins and holes enable automatic locking for convenient operation. Precise alignment of connection terminals simplifies assembly and improves power supply stability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the two sets of batteries of this utility model when unfolded; Figure 2 This is a schematic diagram of the structure of the two battery packs of this utility model when they are combined; Figure 3 This is a schematic diagram of the side structure of the protrusion of this utility model.

[0026] In the diagram: 1. Battery body; 2. Protrusion; 3. Groove; 4. Bottom block; 5. Top block; 6. Connecting block; 7. Anti-slip layer; 8. Reinforcing structure; 9. Connecting terminal; 10. Locking hole; 11. Locking pin; 12. Mounting hole; 13. Spring; 14. Limiting component. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-3This utility model provides an L-shaped battery that is easy to stack, comprising at least two L-shaped battery bodies 1. Each battery body 1 has a protrusion 2 and a groove 3 that matches the protrusion 2. Two adjacent battery bodies 1 are stacked and assembled by the matching protrusion 2 and groove 3. The protrusion 2 is detachably mounted on the battery body 1, and a limiting component 14 is provided between the stacked protrusion 2 and groove 3. The shape and position of the protrusion 2 and groove 3 are designed such that when two battery bodies 1 are stacked, the protrusion 2 of one battery body 1 can be embedded into the groove 3 of the other battery body 1.

[0029] During battery stacking, the protrusion 2 of one battery body 1 is aligned with the groove 3 of another battery body 1, achieving initial positioning through the geometric fit between the protrusion and the groove. The protrusion 2 is detachable, for example, fixed to a pre-set mounting position on the battery body 1 by bolts or clips. When maintenance or replacement is required, the protrusion 2 can be removed independently without affecting the battery body. The limiting component 14 activates after the protrusion is embedded in the groove, limiting the relative displacement of the two battery bodies 1 in the horizontal and vertical directions through mechanical engagement or friction limiting. This design utilizes the guiding properties of the protrusion-contact fit to ensure accurate stacking path, avoiding assembly difficulties caused by alignment deviations. At the same time, the detachable structure facilitates later maintenance, and the limiting component 14 ensures the stability of the stacked state through continuous constraint.

[0030] Specifically, the protrusion 2 is a cuboid protrusion, and the groove 3 is a cuboid groove adapted to the protrusion 2. The length direction of the protrusion 2 is consistent with the side length direction of the battery body 1.

[0031] The cuboid structure, with its protrusions and grooves, utilizes its straight sides and regular edges to achieve a tight fit. During stacking, the four sides of the protrusions fully contact the inner walls of the grooves, restricting the horizontal rotation and displacement of the battery body 1 through surface-to-surface contact. The length of the protrusion 2 aligns with the side of the battery, distributing the force along the length of the battery side, increasing the force's effective distance and reducing the pressure per unit area. During manufacturing, standardized molds ensure the dimensional accuracy of the protrusions and grooves, guaranteeing interchangeability between different battery bodies 1. During assembly, the cuboid structure provides strong guidance, guiding the battery bodies 1 to stack smoothly along a straight line, reducing jamming and wear during assembly. Simultaneously, the larger contact area enhances the overall rigidity after stacking, improving the battery pack's resistance to external impacts.

[0032] Specifically, the protrusion 2 includes a bottom block 4, a top block 5, and a connecting block 6. The bottom block 4 and the top block 5 are respectively fixed at opposite ends of the connecting block 6, and the three form an "I" shaped structure. The bottom block 4 and the top block 5 are respectively slidably installed in the two stacked battery bodies 1.

[0033] The bottom block 4 and top block 5 of the "I"-shaped protrusion 2 are respectively embedded into the corresponding grooves of the upper and lower battery bodies 1. The connecting block 6 connects the bottom block 4 and the top block 5, forming a connection structure that runs through the two battery bodies 1. During stacking, the bottom block 4 slides along the groove of the lower battery body 1, and the top block 5 slides along the groove of the upper battery body 1. The guide effect of the grooves achieves precise alignment of the two battery bodies 1. The "I"-shaped structure design allows the bottom block 4 and top block 5 to provide axial constraints on the upper and lower battery bodies 1, preventing the upper and lower batteries from separating in the vertical direction. At the same time, the length of the connecting block 6 determines the spacing between the two battery bodies 1, ensuring a uniform gap after stacking. The sliding installation method reduces frictional resistance during assembly, making stacking operations easier. When disassembly is required, only a pulling force along the groove direction is needed to separate the battery bodies 1. This structure achieves a balance between the flexibility and stability of the connection through mechanical sliding cooperation, making it suitable for scenarios requiring frequent assembly and disassembly.

[0034] Specifically, the number of protrusions 2 and the number of grooves 3 are both set to multiple, and the multiple protrusions 2 and multiple grooves 3 are arranged circumferentially along the outer contour of the battery body 1, with one-to-one correspondence between the protrusions 2 and the grooves 3.

[0035] Multiple protrusions 2 and grooves 3 are arranged circumferentially along the outer contour of the battery body 1, forming a multi-point mating structure. During stacking, each protrusion 2 is embedded in a corresponding groove 3, and the forces generated by stacking are shared through multiple contact points. The circumferential arrangement ensures that the force distribution is evenly spread along the contour of the battery body 1, avoiding local structural damage due to excessive force at a single point. The one-to-one correspondence design ensures that each protrusion can accurately find its corresponding groove, and the relative movement of the battery body 1 is restricted from different directions through multiple sets of protrusion-groove mating. For example, horizontal translation and rotation can be constrained by the mating of multiple protrusions and grooves. For L-shaped battery bodies 1, the circumferentially arranged protrusions and grooves can specifically enhance the connection strength at the corners. By setting protrusions and grooves on both sides of the corners, stress concentration at the corners is offset. Multiple contact points also improve the fault tolerance of stacking. Even if individual protrusions or grooves experience slight wear, the connection stability of other points can still be guaranteed, extending the battery's service life.

[0036] Specifically, the protrusion 2 and the groove 3 are inclinedly disposed on the battery body, and the inclination direction of the protrusion 2 and the groove 3 is parallel to the extension direction of the diagonal at the L-shaped corner of the battery body 1.

[0037] The protrusion 2 and the groove 3 are inclined along the diagonal direction of the L-shaped corner, aligning with the structural force direction of the battery body 1. When the battery bodies 1 are stacked, stress caused by gravity and external loads will be generated at the corner. The inclined contact surfaces can transfer these stresses along the diagonal direction, distributing them to the two right-angled sides of the battery body 1, preventing stress concentration at a single point at the corner. During assembly, the inclined protrusions and grooves form an oblique guide path, guiding the battery bodies 1 to be stacked along the diagonal direction. This oblique assembly method ensures precise alignment of the corners of the upper and lower battery bodies 1, guaranteeing the symmetry of the overall structure. The inclined design increases the contact length between the protrusion and the groove. Compared to vertical or horizontal settings, a longer contact path provides greater friction and constraint area, enhancing the strength of the connection. At the same time, the layout parallel to the diagonal of the corner makes the position of the protrusion and groove more closely match the contour of the battery body 1, reducing the space occupied inside the battery body 1 and facilitating the arrangement of the internal cells.

[0038] Specifically, the surface of the protrusion 2 is provided with an anti-slip layer 7, which is made of rubber or silicone material with a high coefficient of friction.

[0039] The rubber or silicone anti-slip layer 7 on the surface of the protrusion 2 utilizes its high coefficient of friction to generate significant static friction through close contact with the inner wall of the groove after the protrusion is embedded in the groove. This static friction effectively resists the relative sliding tendency between the battery bodies 1 caused by vibration and shaking, maintaining the stability of the stacked state. The rubber and silicone materials have a certain degree of elasticity; when the protrusion is embedded in the groove, the anti-slip layer 7 is compressed and undergoes slight deformation, filling the gap between the protrusion and the groove and improving the tightness of the fit. Simultaneously, the reaction force generated by the elastic deformation increases the normal pressure between the two, further increasing the friction. During assembly, the elasticity of the anti-slip layer 7 also acts as a buffer, reducing hard collisions and wear between the protrusion and the groove, protecting the structure of the battery body 1. When the battery pack is subjected to external impact, the anti-slip layer 7 can absorb part of the impact force through its own deformation, reducing the impact on the battery connection structure and improving the impact resistance of the battery pack.

[0040] Specifically, a reinforcing structure 8 is provided at the L-shaped corner of the battery body 1, and the reinforcing structure 8 is a metal reinforcing rib.

[0041] Metal reinforcing ribs are tightly integrated with the L-shaped corners of the battery body 1, leveraging the high strength and rigidity of metal to enhance the structural load-bearing capacity of the corners. During battery stacking, the weight of the upper battery is transferred to the lower battery through the corners. The metal reinforcing ribs distribute these longitudinal loads over a larger area, preventing deformation at the corners due to excessive localized stress. When the battery pack is subjected to external lateral forces or torques, stress concentration easily occurs at the L-shaped corners. The metal reinforcing ribs, through their bending and torsional resistance, resist this stress, preventing cracks or breakage at the corners. The interface between the reinforcing ribs and the battery body 1 forms a rigid whole, supplementing the material strength at the corners and improving the overall structural stability of the battery body 1. In multi-layer stacking, the metal reinforcing ribs transfer loads layer by layer, ensuring effective support for the corners of each battery layer and maintaining the overall structural integrity of the battery pack.

[0042] Specifically, the limiting component 14 includes a locking hole 10 and a locking pin 11. The locking hole 10 is disposed within the groove portion 3, and the locking pin 11 is movably mounted within the mounting hole 12 of the protrusion portion 2. A spring 13 is mounted at the bottom of the locking pin 11, and the spring 13 is located within the mounting hole 12. A guide slope is provided at the top of the locking pin 11, and the guide slope faces the direction in which the protrusion portion 2 is inserted into the groove portion 3.

[0043] When the protrusion 2 is inserted into the groove 3, the guide slope at the top of the locking pin 11 contacts the edge of the groove 3. As the insertion proceeds, the edge of the groove exerts a squeezing force on the guide slope, forcing the locking pin 11 to compress the spring 13 and retract into the mounting hole 12 of the protrusion 2. When the protrusion 2 is fully embedded in the groove 3, the locking pin 11 pops out under the elastic force of the spring 13 and inserts into the lock hole 10 in the groove 3, achieving mechanical locking between the protrusion and the groove. The spring 13 always applies an upward thrust to the locking pin 11, ensuring that the locking pin 11 remains extended and securely locked in the lock hole 10 when no external force is applied. When unlocking is required, pressure is applied to the locking pin 11 to compress the spring 13 and retract it into the mounting hole 12, thus pulling the protrusion 2 out of the groove 3. The design of the guide ramp reduces the resistance during insertion, allowing the locking process to be completed automatically without additional operation. The elastic potential energy of the spring 13 provides a continuous locking force for the locking pin 11, ensuring the reliability of the limiting component 14 and effectively preventing the stacked battery body 1 from accidentally separating.

[0044] Specifically, the top and bottom of the battery body 1 are also provided with connection terminals 9. The position of the connection terminals 9 is designed so that when the batteries are stacked, the connection terminals 9 of adjacent batteries can be accurately aligned.

[0045] The connecting terminals 9 are respectively located at corresponding positions on the top and bottom of the battery body 1. Their positional accuracy is ensured through mold processing, guaranteeing precise alignment of the terminals when the batteries are stacked. After the battery bodies 1 are positioned and stacked using protrusions and grooves, the connecting terminal 9 at the bottom of the upper battery and the connecting terminal 9 at the top of the lower battery make contact, forming an electrical path. The connecting terminals 9 are typically made of a highly conductive metal material, such as copper or copper alloy, and may be gold-plated to reduce contact resistance. During alignment, the pressure between the terminals ensures good electrical contact, reducing power loss due to contact impedance. This design completes mechanical stacking and electrical connection simultaneously, eliminating the need for separate wiring and improving assembly efficiency. Simultaneously, the precisely aligned terminals ensure even current distribution within the battery pack, preventing localized overheating due to poor contact, thus improving the electrical performance and safety of the battery pack.

[0046] Specifically, the metal reinforcing rib is fixedly connected to the battery body 1 by welding, and the thickness of the metal reinforcing rib is 0.5-2mm.

[0047] During the welding process, the metal reinforcing ribs and the connection point of the battery body 1 are melted and fused at high temperatures. After cooling, a strong metallurgical bond is formed. This connection method ensures that there are no gaps between the reinforcing ribs and the battery body 1, and the force transmission is direct and efficient. The 0.5-2mm thickness design provides sufficient structural strength to enhance the load-bearing capacity at the corners without increasing the weight and volume of the battery body 1 due to excessive thickness, or affecting the internal spatial layout of the battery. The welded reinforcing ribs can work together with the battery body 1 to bear the force. When external forces are applied to the corners, the reinforcing ribs will share most of the stress and absorb energy through their own deformation, thereby protecting the main structure of the battery body 1 from damage. This thickness of metal reinforcing ribs also makes it easy to control the temperature and penetration depth during welding, ensuring stable welding quality and avoiding problems such as incomplete welding or over-welding.

[0048] The overall working principle of this utility model is as follows: During the stacking and assembly stage, the L-shaped battery body 1 precisely aligns with the groove 3 through multiple cuboid protrusions 2 arranged circumferentially. The protrusions 2 are set along the length of the battery side and are parallel to the diagonal of the L-shaped corner, achieving initial positioning through geometric adaptation and sliding groove guidance. The bottom block 4 and top block 5 of the "I"-shaped protrusion are respectively embedded into the upper and lower battery bodies 1, forming a multi-dimensional mechanical constraint in conjunction with the friction of the surface anti-slip layer 7. At the same time, the locking pin 11 of the limiting component 14 automatically engages with the locking hole 10 under the action of the spring 13, completing the firm locking after stacking. The detachable protrusion design facilitates later maintenance and replacement.

[0049] During operation, the battery pack reinforces the structural strength of the L-shaped corners with metal reinforcing ribs. These 0.5-2mm thick ribs are welded to the main body to form a rigid whole, effectively distributing stacked loads and external stresses to prevent corner deformation or damage. The top and bottom connection terminals 9 automatically and precisely align with the stack, forming a stable electrical path through metal contact to ensure uniform current distribution. The synergistic effect of these structures ensures both the convenience and stability of multi-layer stacking, while also improving the overall performance and safety of the battery pack through mechanical optimization and electrical design, making it suitable for scenarios requiring compact layouts and frequent assembly.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An L-shaped battery that is easy to stack, characterized in that: The battery includes at least two L-shaped battery bodies (1), each battery body (1) having a protrusion (2) and a groove (3) adapted to the protrusion (2). Two adjacent battery bodies (1) are stacked and assembled by the adapted protrusion (2) and groove (3). The protrusion (2) is detachably mounted on the battery body (1). A limiting component (14) is provided between the stacked protrusion (2) and groove (3).

2. The L-shaped battery according to claim 1, which is easy to stack, is characterized in that, The protrusion (2) is a cuboid protrusion, and the groove (3) is a cuboid groove that matches the protrusion (2).

3. An L-shaped battery for easy stacking as described in claim 1 or 2, characterized in that, The protrusion (2) includes a bottom block (4), a top block (5) and a connecting block (6). The bottom block (4) and the top block (5) are fixed at opposite ends of the connecting block (6), and the three form an "I" shaped structure. The bottom block (4) and the top block (5) are slidably installed in the two battery bodies (1) of the stacked assembly.

4. An L-shaped battery for easy stacking as described in claim 1, characterized in that, The number of protrusions (2) and the number of grooves (3) are both set to multiple. The multiple protrusions (2) and the multiple grooves (3) are arranged circumferentially along the outer contour of the battery body (1), and the protrusions (2) and the grooves (3) correspond one-to-one.

5. An L-shaped battery for easy stacking as described in claim 1, characterized in that, The protrusion (2) and the groove (3) are inclinedly disposed on the battery body (1), and the inclination direction of the protrusion (2) and the groove (3) is parallel to the extension direction of the diagonal at the L-shaped corner of the battery body (1).

6. An L-shaped battery for easy stacking according to claim 1, characterized in that, The surface of the protrusion (2) is provided with an anti-slip layer (7), which is made of rubber or silicone material with a high coefficient of friction.

7. An L-shaped battery for easy stacking according to claim 1, characterized in that, The battery body (1) has a reinforcing structure (8) at the L-shaped corner, and the reinforcing structure (8) is a metal reinforcing rib.

8. An L-shaped battery for easy stacking as described in claim 1, characterized in that, The limiting component (14) includes a locking hole (10) and a locking pin (11). The locking hole (10) is located in the groove (3). The locking pin (11) is movably installed in the mounting hole (12) of the protrusion (2). A spring (13) is installed at the bottom of the locking pin (11). The spring (13) is located in the mounting hole (12).

9. An L-shaped battery for easy stacking according to claim 1, characterized in that, The top and bottom of the battery body (1) are also provided with connection terminals (9), which are used to realize the electrical connection between the two battery bodies (1) stacked together.

10. An L-shaped battery for easy stacking according to claim 7, characterized in that, The metal reinforcing rib is fixedly connected to the battery body (1) by welding, and the thickness of the metal reinforcing rib is 0.5-2mm.

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