Battery fixing frame expansion structure

Abstract

The invention belongs to the technical field of battery installation, and particularly relates to a battery fixing frame expansion structure which comprises an assembly frame, a battery installed on the assembly frame and a locking mechanism used for locking the assembly frame, the assembly frame is formed by assembling a plurality of sub-frame arrays, the sub-frames are in a rectangular plate shape, and the sub-frames are arranged on the assembly frame. A plurality of assembly insertion blocks are arranged on two adjacent side edges of each sub-frame, the plurality of assembly insertion blocks are fixed on the side edges of the sub-frame in a protruding manner at equal intervals, and assembly insertion grooves matched with the assembly insertion blocks are formed in the other two adjacent side edges of the sub-frame. According to the invention, the assembly frame is assembled by the plurality of sub-frames through sliding fit and insertion of the assembly insertion blocks and the assembly slots, the splicing number of the sub-frames can be flexibly increased or decreased and the overall size of the assembly frame can be adjusted according to the number of actually required batteries, and the assembly frame can adapt to battery packs of different scales without replacing the whole set of structure; the problems that an existing fixing frame is fixed in size and poor in adaptability are solved, and the application scene is wider.

Description

Technical Field

[0001] This invention relates to the field of battery installation technology, specifically to an extended structure for a battery fixing frame. Background Technology

[0002] A battery mounting frame is a mechanical structure used for positioning, securing, and assembling single or multiple batteries. It is widely used in energy storage devices, small appliances, portable electronic devices, and other scenarios requiring multiple batteries to power the battery pack. Its core function is to arrange batteries in an orderly manner through pre-set mounting positions (such as slots or limiting structures), preventing loosening or poor contact due to vibration or displacement during use. Simultaneously, it must provide operating space for electrical connections at the battery ends (such as wiring and conductive terminal connections), ensuring the stability and safety of the battery pack's power supply.

[0003] Existing battery mounting frame devices have several limitations in practical applications. These limitations primarily stem from the fact that most frames are integrally molded structures with fixed dimensions, only suitable for a specific number or size of batteries. If the number of batteries needs to be increased or decreased, the entire mounting frame must be replaced. This lack of flexibility in adjusting the assembly size according to actual power supply requirements results in low adaptability. Therefore, there is a need to develop an extended battery mounting frame structure. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of the embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] To address the aforementioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0006] A battery fixing frame extension structure includes an assembly frame, a battery mounted on the assembly frame, and a locking mechanism for locking the assembly frame. The assembly frame is assembled from an array of multiple sub-frames. Each sub-frame is rectangular in shape. Each sub-frame has multiple assembly blocks on two adjacent sides. The multiple assembly blocks are equidistantly protruding and fixed on the sides of the sub-frame. The other two adjacent sides of the sub-frame are provided with assembly slots that are adapted to the assembly blocks. The multiple assembly slots are equidistantly recessed on the sides of the sub-frame.

[0007] Two subframes that are close to each other are assembled and expanded by sliding and fitting an assembly plug of one subframe into an assembly slot of the other subframe.

[0008] Multiple batteries are located in the area between two face-to-face assembly frames. The assembly frame has a recessed slot on the side near the battery for inserting the battery end. The batteries and the slots are evenly distributed in an array. The assembly frame has a connection port on the side away from the battery for exposing the battery end. The connection port corresponds to and is aligned with the slot.

[0009] The locking mechanism is used to lock two face-to-face assembly frames. The locking mechanism includes locking grooves evenly arranged in an array on the side wall of the assembly frames. The locking grooves are recessed on the side of the assembly frames away from the battery. The locking grooves are located at the center of every four connection ports arranged in a "U" shape. A through hole is opened in the center of the inner side wall of the locking groove. The locking mechanism also includes a locking rod that passes through the two face-to-face through holes. The length direction of the locking rod is consistent with the length direction of the battery. The two ends of the locking rod are respectively provided with self-locking external threads. A locking ring is inserted into the groove of the locking groove. The inner side of the locking ring is provided with an internal thread that engages with the self-locking external threads.

[0010] As a preferred embodiment of the battery fixing frame extension structure of the present invention, the assembly slot is one of a dovetail groove shape or an isosceles trapezoid, and the shape of the assembly plug matches the shape of the assembly slot.

[0011] As a preferred embodiment of the battery fixing frame expansion structure of the present invention, the outer side of the assembly plug is inserted into the inner side of the assembly slot along the thickness direction of the sub-frame, and a limiting block is provided protruding on one side of the slot of the assembly slot. The assembly plug inserted into the slot of the assembly slot is blocked by the limiting block, so as to form a unidirectional sliding insertion of the assembly plug.

[0012] As a preferred embodiment of the battery fixing frame extension structure of the present invention, each of the sub-frames is fixedly provided with a support leg at one of the four apex corners on the side away from the battery, and the support leg is arranged perpendicularly to the sub-frame.

[0013] As a preferred embodiment of the battery fixing frame extension structure of the present invention, the battery is cylindrical, the slot is a circular groove adapted to the battery, the inner diameter of the slot is the same as the outer diameter of the battery, and the locking rod passes through the gap between the four "U"-shaped batteries.

[0014] In a preferred embodiment of the battery fixing frame expansion structure described in this invention, the connection port is circular and concentrically arranged with the slot, and the inner diameter of the connection port is smaller than the inner diameter of the slot.

[0015] As a preferred embodiment of the battery fixing frame extension structure of the present invention, the locking groove and the through hole are both circular holes and their axes are collinear. The inner diameter of the locking groove is larger than the inner diameter of the through hole. The locking ring is circular and its thickness is greater than the thickness of the locking groove. The locking ring protrudes from the outer periphery of the sub-frame and is provided with anti-slip texture.

[0016] As a preferred embodiment of the battery fixing frame extension structure of the present invention, the sub-frame has a semi-circular groove recessed around its outer side wall, the semi-circular groove being opened at the points corresponding to the locking groove array, and a semi-circular hole being opened at the center of the inner side wall of the semi-circular groove.

[0017] The semi-circular grooves on the two assembled subframes form a "circular groove" that matches the locking groove, and the semi-circular holes form a "circular hole" that matches the through hole. The "circular grooves" and "circular holes" are locked by a locking mechanism.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The assembly frame consists of multiple sub-frames that are slidably inserted into the assembly slots to form an array. The number of sub-frames can be increased or decreased according to the actual number of batteries required, and the overall size of the assembly frame can be adjusted. It can adapt to battery packs of different sizes without changing the entire structure, solving the problem of "fixed size and poor adaptability" of existing fixed frames, and is applicable to a wider range of scenarios.

[0020] 2. The slots on the assembly frame are fitted circular slots, and the inner diameter of the slots is consistent with the outer diameter of the battery, which allows the battery to fit tightly against the inner wall of the slots and reduce shaking. At the same time, the connection port on the side of the assembly frame away from the battery is circular and concentric with the slots, and its inner diameter is smaller than that of the slots. This ensures that the battery end is exposed for easy wiring, while also preventing the battery from coming out of the connection port side. This design helps to improve battery positioning and ensure battery installation stability.

[0021] 3. Semicircular grooves and semicircular holes are provided around the outer side wall of the sub-frame. Two sub-frames that are assembled together can be spliced ​​together through the semicircular grooves to form a "circular groove" that matches the locking groove, and spliced ​​together through the semicircular holes to form a "circular hole" that matches the through hole. This allows the locking mechanism to act directly on the splicing point to lock the overall assembled frame after splicing, thereby strengthening the overall strength of the multi-sub-frame splicing. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0023] Figure 1 This is a schematic diagram of the sub-framework of the present invention;

[0024] Figure 2 For the present invention Figure 1 A schematic diagram of the structure viewed from the side (upward angle);

[0025] Figure 3 For the present invention Figure 1 A structural diagram in the rear view direction;

[0026] Figure 4 This is a schematic diagram of the assembly frame of the present invention;

[0027] Figure 5 For the present invention Figure 4 A structural diagram in the rear view direction;

[0028] Figure 6 This is a schematic diagram of the locking rod and locking ring of the present invention;

[0029] Figure 7 This is an exploded view of the present invention;

[0030] Figure 8 For the present invention Figure 7 Assembly diagram;

[0031] Figure 9 For the present invention Figure 8 A schematic diagram of the structure after the locking lever is installed.

[0032] In the diagram: Assembly frame-10; Sub-frame-100; Assembly insert-101; Assembly slot-102; Limiting block-103; Support leg-104; Battery-200; Card slot-201; Connection port-202; Locking mechanism-300; Locking groove-301; Semi-circular groove-302; Through hole-303; Semi-circular hole-304; Locking rod-305; Self-locking external thread-306; Locking ring-307; Internal thread-308; Anti-slip texture-309; Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0036] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] Please see Figures 1-9 The diagram shown is a structural schematic of an embodiment of the battery fixing frame extension structure of the present invention. Please refer to [link / reference]. Figures 1-9 This paper provides a detailed description of an extended structure for fixing a battery frame.

[0038] A battery fixing frame extension structure includes an assembly frame 10, a battery 200 mounted on the assembly frame 10, and a locking mechanism 300 for locking the assembly frame 10. The assembly frame 10 is assembled from an array of multiple sub-frames 100. Each sub-frame 100 is rectangular in shape. Each sub-frame 100 has multiple assembly blocks 101 on two adjacent sides. The multiple assembly blocks 101 are equidistantly protruding and fixed on the sides of the sub-frame 100. The other two adjacent sides of the sub-frame 100 are provided with assembly slots 102 adapted to the assembly blocks 101. The multiple assembly slots 102 are equidistantly recessed on the sides of the sub-frame 100.

[0039] Two subframes 100 that are close to each other are assembled and expanded by sliding and fitting the assembly plug 101 of one subframe into the assembly slot 102 of the other subframe.

[0040] The sub-frame 100 achieves array assembly by sliding and fitting the assembly plug 101 into the assembly slot 102, which allows the size of the assembly frame 10 to be adjusted according to the actual number of batteries 200 required, providing a certain degree of expansion flexibility and adapting to different battery installation needs.

[0041] Multiple batteries 200 are located in the area between two face-to-face assembly frames 10. The assembly frame 10 has a recessed slot 201 on the side near the battery 200 for inserting the end of the battery 200. The batteries 200 and the slot 201 are evenly distributed in an array. The assembly frame 10 has a connection port 202 on the side away from the battery 200 for exposing the end of the battery 200. The connection port 202 corresponds to and is aligned with the slot 201.

[0042] The battery 200 is located between two face-to-face assembly frames 10, and the slots 201 array on the assembly frames 10 are evenly distributed, which can position the battery 200 in an orderly manner and reduce the possibility of the battery 200 shifting within the assembly frames 10.

[0043] The connection port 202 on the side of the assembly frame 10 away from the battery 200 is aligned with the slot 201, which allows the end of the battery 200 to be exposed, providing convenience for subsequent wiring operations of the battery 200;

[0044] The locking mechanism 300 is used to lock two face-to-face assembly frames 10. The locking mechanism 300 includes locking grooves 301 evenly arranged in an array on the side wall of the assembly frame 10. The locking grooves 301 are recessed on the side of the assembly frame 10 away from the battery 200. The locking grooves 301 are located at the center of every four connection ports 202 distributed in a "U" shape. The center of the inner side wall of the locking groove 301 has a through hole 303. The locking mechanism 300 also includes a locking rod 305 that passes through the two face-to-face through holes 303. The length direction of the locking rod 305 is consistent with the length direction of the battery 200. The two ends of the locking rod 305 are respectively provided with self-locking external threads 306. A locking ring 307 is inserted into the groove of the locking groove 301. The inner side of the locking ring 307 is provided with an internal thread 308 that engages with the self-locking external threads 306.

[0045] In the locking mechanism 300, the locking rod 305 passes through the through holes 303 of the two assembly frames 10 and engages with the internal thread 308 of the locking ring 307 through the self-locking external thread 306, which can fix the two face-to-face assembly frames 10 and improve the stability of the battery 200 in the assembly frame 10; at the same time, the locking groove 301 is located at the center of every four "U"-shaped connection ports 202, which can make the locking points more evenly distributed and help balance the force on the assembly frame 10.

[0046] Furthermore, the assembly slot 102 is in the shape of a dovetail groove or an isosceles trapezoid, and the shape of the assembly plug 101 matches the shape of the assembly slot 102.

[0047] The assembly slot 102 adopts a dovetail groove shape or an isosceles trapezoid, and the shape of the assembly plug 101 matches the assembly slot 102. This can increase the contact area between the assembly plug 101 and the assembly slot 102, reduce the loosening of the sub-frame 100 along the direction perpendicular to the insertion after assembly, improve the connection stability between the sub-frames 100, and reduce the probability of the sub-frame 100 separating during use.

[0048] Further, the outer side of the assembly insert block 101 is inserted into the inner side of the assembly slot 102 along the thickness direction of the sub-frame 100. One side of the inner side of the assembly slot 102 protrudes with a limiting block 103. The assembly insert block 101 inserted into the inner side of the assembly slot 102 is blocked by the limiting block 103, so as to form a one-way sliding insertion of the assembly insert block 101.

[0049] The assembly insert block 101 is inserted into the assembly slot 102 along the thickness direction of the sub-frame 100. With the blocking effect of the limiting block 103 in the assembly slot 102, the assembly insert block 101 can be guided to slide and insert in a set direction, avoiding the difficulty of insertion caused by direction misalignment during assembly. At the same time, the limiting block 103 can form a one-way restriction on the assembly insert block 101, reducing the situation that the assembly insert block 101 is disengaged from the assembly slot 102 in the reverse direction, and improving the reliability after the sub-frame 100 is assembled.

[0050] Further, four legs 104 are fixedly arranged at the four top corners of the side of each sub-frame 100 away from the battery 200, and the legs 104 are perpendicular to the sub-frame 100.

[0051] The four vertical legs 104 are arranged at the four top corners of the side of the sub-frame 100 away from the battery 200, which can separate the sub-frame 100 from the installation surface, reducing the contact interference caused by impurities, protrusions, etc. on the installation surface to the exposed part of the end of the battery 200 through the connection port 202. At the same time, the legs 104 can also form a certain gap at the bottom of the sub-frame 100, providing space for air circulation and helping to improve the ventilation environment at the bottom of the sub-frame 100.

[0052] Further, the battery 200 is cylindrical, the card slot 201 is a circular slot adapted to the battery 200, the inner diameter of the card slot 201 is the same as the outer diameter of the battery 200, and the locking rod 305 passes through the gap in the area surrounded by four batteries 200 distributed in a "mouth" shape.

[0053] The battery 200 is cylindrical, the card slot 201 is a matching circular slot and its inner diameter is the same as the outer diameter of the battery 200, which can make the card slot 201 better fit the outer wall of the battery 200, improving the positioning accuracy of the battery 200 and reducing the situation that the battery 200 shakes in the card slot 201.

[0054] The locking rod 305 passes through the gap in the area surrounded by four batteries 200 distributed in a "mouth" shape, which can make full use of the space between the batteries 200, avoiding the position interference between the locking rod 305 and the batteries 200, and ensuring the compatibility of the installation of the locking mechanism 300 and the placement of the batteries 200.

[0055] Further, the connection port 202 is circular and concentric with the card slot 201, and the inner diameter of the connection port 202 is smaller than the inner diameter of the card slot 201.

[0056] The connection port 202 is circular and concentrically positioned with the slot 201, which allows for better alignment between the connection port 202 and the end of the battery 200, reducing uneven exposure of the battery 200 end due to positional deviation. At the same time, the inner diameter of the connection port 202 is smaller than the inner diameter of the slot 201, which can provide some obstruction to the battery 200 while ensuring normal exposure of the battery 200 end, reducing the probability of the battery 200 coming off from one side of the connection port 202.

[0057] Furthermore, both the locking groove 301 and the through hole 303 are circular holes and their axes are collinear. The inner diameter of the locking groove 301 is larger than the inner diameter of the through hole 303. The locking ring 307 is circular and its thickness is greater than the thickness inside the locking groove 301. The locking ring 307 protrudes from the outer periphery of the subframe 100 and is provided with anti-slip texture 309.

[0058] Both the locking groove 301 and the through hole 303 are round holes with collinear axes, which ensures that the locking rod 305 can smoothly pass through the through holes 303 of the two assembly frames 10, reducing the difficulty of installing the locking rod 305 due to hole offset.

[0059] The inner diameter of the locking groove 301 is larger than the inner diameter of the through hole 303, which provides sufficient installation space for the locking ring 307, making it easy for the locking ring 307 to be placed into the locking groove 301 and cooperate with the locking rod 305.

[0060] The locking ring 307 is thicker than the locking groove 301, and has anti-slip texture 309 on its outer periphery. This makes it easier for operators to grip and twist the locking ring 307, and also increases the friction between the hand and the locking ring 307, reducing the probability of slipping during twisting and improving the convenience of locking operation.

[0061] Furthermore, a semi-circular groove 302 is recessed around the outer side wall of the sub-frame 100, and the semi-circular groove 302 is opened at the point corresponding to the locking groove 301 array. A semi-circular hole 304 is opened at the center of the inner side wall of the semi-circular groove 302.

[0062] The semi-circular grooves 302 on the two assembled sub-frames 100 form "circular grooves" that correspond to the locking grooves 301, and the semi-circular holes 304 form "circular holes" that correspond to the through holes 303. The "circular grooves" and "circular holes" are locked by the locking mechanism 300.

[0063] On the two sub - frames 100 that are assembled with each other, the semi - circular grooves 302 can be spliced into a "circular groove" that is consistent with the locking groove 301, and the semi - circular holes 304 can be spliced into a "circular hole" that is consistent with the through - hole 303, so that the combined structure of the spliced sub - frames can also be adapted to the locking mechanism 300 for locking. There is no need to design a dedicated locking structure additionally, which improves the overall locking flexibility after the sub - frames 100 are assembled and expands the applicable scenario range of the locking mechanism 300.

[0064] In the specific use process, according to the number of required batteries 200, determine the number of arrays of the sub - frames 100. Take two adjacent sub - frames 100, align the assembly insertion block 101 on the side of one sub - frame 100 with the assembly slot 102 on the corresponding side of the other sub - frame 100, and slide it in one direction along the thickness direction of the sub - frame 100. After insertion, the assembly insertion block 101 will be blocked by the limiting block 103 in the assembly slot 102, and stop inserting to complete a single - group splicing; repeat the above splicing operation, and splice more sub - frames 100 in the "row - column array" manner until an assembly frame 10 that can accommodate the target number of batteries 200 is formed.

[0065] Align one end of the cylindrical battery 200 with the circular - groove - shaped card slot 201 on the side of the assembly frame 10 close to the battery 200. The inner diameter of the card slot 201 is consistent with the outer diameter of the battery 200, which can ensure that the battery 200 fits precisely against the inner wall of the card slot 201. Insert the battery 200 along the axis direction of the card slot 201 until the end of the battery 200 is aligned with the connection port 202 on the side of the assembly frame 10 far from the battery 200. In the above - mentioned manner, install all the batteries 200 one by one into the array card slots 201 of the assembly frame 10, ensuring that the batteries 200 are evenly distributed without deviation or tilt.

[0066] Take another assembly frame 10 with the same size as the first one, and after assembling it in the same way, align the card slot 201 on its side close to the battery 200 with the other end of the already installed battery 200, and slowly snap it together. During the snapping - together process, ensure that the connection ports 202 of the two assembly frames 10 are both corresponding to the ends of the battery 200.

[0067] Take a locking rod 305, insert one end of it from the locking groove 301 of one of the assembly frames 10, pass through the through - hole 303 of this assembly frame 10, then pass through the area gap between the two assembly frames 10 and surrounded by four batteries 200 distributed in a "square" shape, and finally penetrate the through - hole 303 of the opposite assembly frame 10, so that both ends of the locking rod 305 extend out from the locking grooves 301 of the two assembly frames 10.

[0068] Take two locking rings 307, align their inner threads 308 with the self-locking external threads 306 at both ends of the locking rod 305, and place them into the corresponding locking slots 301. Tighten the locking rings 307 to move the two assembly frames 10 closer to each other until the battery 200 is stably clamped. Install the locking rods 305 and locking rings 307 one by one in all the locking slots 301 in the above manner to complete the locking of the two assembly frames 10.

[0069] 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 invention. In particular, as long as there is no structural conflict, the features in the disclosed embodiments can be combined with each other in any manner. 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. A battery fixing frame extension structure comprising an assembly frame (10), a battery (200) mounted on the assembly frame (10), and a locking mechanism (300) for locking the assembly frame (10), characterized in that: The assembly frame (10) is assembled by a plurality of sub-frames (100) array, the sub-frame (100) is rectangular plate, and two adjacent sides of each sub-frame (100) are provided with a plurality of assembly blocks (101), a plurality of assembly blocks (101) are fixed on the side of the sub-frame (100) at equal intervals, and the remaining two adjacent sides of the sub-frame (100) are provided with assembly slots (102) matched with the assembly blocks (101), and a plurality of assembly slots (102) are provided on the side of the sub-frame (100) at equal intervals. Two sub-frames (100) close to each other are inserted by sliding and fitting of the assembly block (101) of one sub-frame and the assembly slot (102) of the other sub-frame, so that the assembly is expanded. A plurality of batteries (200) are located in the area between two assembly frames (10) facing each other, and the side of the assembly frame (10) close to the battery (200) is recessed and provided with a clamping groove (201) for inserting the end of the battery (200), the battery (200) and the clamping groove (201) are evenly distributed in an array, and the side of the assembly frame (10) away from the battery (200) is provided with a connecting port (202) for exposing the end of the battery (200), and the connecting port (202) is arranged corresponding to and aligned with the clamping groove (201). The locking mechanism (300) is used for locking two assembly frames (10) facing each other, and the locking mechanism (300) comprises a locking slot (301) arranged in an array on the side wall of the assembly frame (10), the locking slot (301) is recessed on the side of the assembly frame (10) away from the battery (200), the locking slot (301) is located at the center of every four connecting ports (202) arranged in a "mouth" shape, the center of the inner side wall of the locking slot (301) is provided with a through hole (303), the locking mechanism (300) further comprises a locking rod (305) penetrating through the two through holes (303) facing each other, the length direction of the locking rod (305) is consistent with the length direction of the battery (200), the two ends of the locking rod (305) are respectively provided with a self-locking external thread (306), and the locking ring (307) is inserted into the locking slot (301), and the inner side of the locking ring (307) is provided with an internal thread (308) engaged with the self-locking external thread (306).

2. The battery securing frame extension structure of claim 1, wherein: The assembly slot (102) is in one of dovetail slot shape and isosceles trapezoidal shape, and the shape of the assembly block (101) is matched with the shape of the assembly slot (102).

3. The battery securing frame extension structure of claim 1, wherein: The outer side of the assembly block (101) is inserted into the inner side of the assembly slot (102) along the thickness direction of the sub-frame (100), and the side of the slot of the assembly slot (102) is provided with a limiting block (103) protruding, and the assembly block (101) inserted into the slot of the assembly slot (102) is blocked by the limiting block (103), so that the assembly block (101) is formed in a single direction sliding insertion.

4. The battery securing frame extension structure of claim 1, wherein: Four legs (104) are fixedly arranged at the four top corners on the side of each sub-frame (100) away from the battery (200), and the legs (104) are perpendicular to the sub-frame (100).

5. The battery securing frame extension structure of claim 1, wherein: The battery (200) is cylindrical, the card slot (201) is a circular groove adapted to the battery (200), the inner diameter of the card slot (201) is the same as the outer diameter of the battery (200), and the locking rod (305) passes through the gap area surrounded by four batteries (200) distributed in a "mouth" shape.

6. The battery securing frame extension structure of claim 5, wherein: The connection port (202) is circular and concentric with the card slot (201), and the inner diameter of the connection port (202) is smaller than the inner diameter of the card slot (201).

7. The battery securing frame extension structure of claim 1, wherein: Both the locking slot (301) and the through hole (303) are circular holes and their axes are collinear. The inner diameter of the locking slot (301) is larger than the inner diameter of the through hole (303). The locking ring (307) is circular and its thickness is greater than the thickness inside the locking slot (301). The locking ring (307) protrudes from the outer periphery of the sub-frame (100) and is provided with anti-slip lines (309).

8. The battery securing frame extension structure of claim 7, wherein: Semicircular semi-grooves (302) are recessed around the outer side wall of the sub-frame (100). The semi-grooves (302) are opened at the points corresponding to the array of the locking slots (301). The center of the inner side wall of the semi-groove (302) is opened with a semi-circular semi-hole (304). The semi-grooves (302) on two mutually assembled sub-frames (100) form a "circular groove" consistent with the locking slot (301), and the semi-holes (304) form a "circular hole" consistent with the through hole (303). The "circular groove" and the "circular hole" are locked by a locking mechanism (300).

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