A cylindrical battery pack structure

Abstract

This utility model discloses a cylindrical battery pack structure, aiming to provide a cylindrical battery pack connection structure that allows for layered battery installation. It includes: two mounting frames with several rows of evenly distributed mounting holes; a partition plate with the two mounting frames positioned on opposite sides of the partition plate, detachably connected to the partition plate; several battery bodies corresponding one-to-one with the mounting holes, installed within the mounting frames; conductive plates connecting the battery bodies; conductive strips with both ends connected to the conductive plates on the two mounting frames; and protective plates at both ends of the mounting frames, detachably connected to the mounting frames. The advantages of this utility model are: it allows for layered battery installation, ensures stable installation and connection, and enables the charging and discharging of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a cylindrical battery pack structure. Background Technology

[0002] With increasing global energy scarcity and environmental concerns, electric vehicles have become a key development project for the automotive industries of various countries. However, the main bottleneck in the development of electric vehicles is the battery issue, and the safety and performance of the battery pack are particularly important. The structure for reliably connecting the batteries is also crucial for ensuring stable charging and discharging. Existing battery connection structures are typically single-layered. This method occupies a large area when connecting multiple batteries, leading to a bulky battery pack. Furthermore, with a large unfolded area, loose connections can cause damage.

[0003] Chinese Patent Publication No. CN108292789B, published on April 18, 2012, discloses a battery pack comprising: a plurality of cylindrical batteries; an upper end cover disposed above the plurality of cylindrical batteries to protect the interior of the battery pack; a first metal panel located below the upper end cover and joined to the upper portion of the cylindrical batteries; a second metal panel joined to the lower portion of the cylindrical batteries; a retainer configured to surround and secure the entire outer surface of the cylindrical batteries and the lower portion of the second metal panel; a lower end cover located below the second metal panel and the retainer to form the lower end portion of the battery pack; a first heating element attached between the first metal panel and the upper end cover and electrically connected to the first metal panel; a second heating element attached between the retainer and the lower end cover and electrically connected to the second metal panel; and a BMS configured to measure the internal temperature of the battery pack, wherein when the temperature of the battery pack is equal to or lower than a first preset reference temperature, the BMS controls the first heating element and the second heating element to apply heat to the plurality of cylindrical batteries. The drawback of this invention is that the battery pack has a single-layer structure for arranging individual cells, which can easily lead to a bulky battery pack size. Utility Model Content

[0004] The present invention aims to overcome the shortcomings of the existing technology where the single-cell arrangement is a single-layer structure, which easily leads to a bulky battery pack. It provides a cylindrical battery pack connection structure that allows for layered installation of batteries.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cylindrical battery pack structure, comprising:

[0007] Mounting bracket, two mounting brackets are provided, and the mounting brackets are provided with several rows of evenly distributed mounting holes;

[0008] A partition plate, with two mounting brackets placed on both sides of the partition plate, wherein the partition plate and the mounting brackets are detachably connected;

[0009] The battery body has several parts, each corresponding to a mounting hole, and is installed in a mounting bracket.

[0010] A conductive plate is used to connect the battery body;

[0011] A conductive strip, the two ends of which are respectively connected to conductive plates on the two side mounting brackets;

[0012] The mounting bracket is equipped with protective plates at both the front and rear ends, and the protective plates are detachably connected to the mounting bracket.

[0013] The battery cells are installed one-to-one through the mounting holes on the mounting bracket, and the positions of adjacent rows of mounting holes are evenly distributed in a square, which makes the distribution of the battery cells more neat. After the battery cells are installed sequentially on the mounting bracket, the two mounting brackets are installed on both sides of the partition plate. The battery cells on the two mounting brackets are separated by the partition plate and are detachably connected to the partition plate. The mounting brackets are installed on the partition plate, which is made of insulating material. The battery cells on the mounting brackets are connected together through conductive plates to realize the charging and discharging of the battery pack on this mounting bracket. The battery cells on the mounting brackets on both sides of the partition plate are connected through conductive strips to realize the circulation of current. This mounting structure is suitable for the installation of various primary cylindrical batteries. Finally, protective plates are installed at both ends of the mounting bracket to protect the battery cells inside the mounting bracket, achieving the purpose of layered battery installation.

[0014] Preferably, the mounting bracket includes an upper bracket and a lower bracket, both of which have a plurality of mounting holes, with the mounting holes on the upper bracket corresponding one-to-one with those on the lower bracket. Both the upper and lower brackets are equipped with connecting rods, each with a threaded hole, which corresponds to the threaded holes on the upper and lower brackets. The battery body is placed between the upper and lower brackets, and both the upper and lower brackets have push grooves. The protection plate is detachably connected to the mounting bracket by engaging with the push grooves. The battery body is placed between the upper and lower frames of the mounting bracket, with each battery body corresponding to a mounting hole. Several battery bodies are connected through the mounting holes. The upper and lower frames are fixed together by pressing the battery bodies together. Limiting rings are installed on the side of each mounting hole facing the battery body to limit the position of the battery body and ensure that the battery body does not move. The upper and lower frames are connected by connecting rods, each with threaded holes. Screws are passed through the threaded holes of the two connecting rods to fix the upper and lower frames together. Then, a protective plate is pushed into the mounting bracket. The two ends of the protective plate are connected to the push slots of the upper and lower frames respectively to protect the battery body. This design can ensure the stability of the installation.

[0015] Preferably, the conductive plate includes a single-row plate and a double-row plate. The single-row plate is installed on the two rows of battery bodies at both ends of the mounting frame, and the remaining battery bodies are connected by the double-row plate. The double-row plate has a rectangular cross-sectional shape, and adjacent rows of battery bodies are connected by the double-row plate. Several connecting pieces are installed on both the single-row plate and the double-row plate. The connecting pieces correspond one-to-one with the battery bodies and are in contact with the battery bodies. Conductive plates are provided on both sides of the mounting frame and connected to the battery bodies. One end of the conductive plate is connected to the mounting frame. Single-row conductive plates are placed on both sides of the mounting frame, connecting the first row of battery cells together. Then, every other two adjacent rows of battery cells are connected by double-row plates, dividing the battery cells into several groups. The square double-row plates connect the two rows of battery cells. Because the double-row and single-row plates divide the battery cells into several groups, they are connected one group at a time during installation, enabling rapid connection and reducing interference between each group of battery cells, thus ensuring the stability of the battery pack. The single-row and double-row plates are connected to the ends of the battery cells via connecting tabs, ensuring reliable connection. The conductive plates installed on both sides of the mounting frame are identical and fixed to the mounting frame with screws, ensuring the stability of the conductive plates. This design guarantees a stable connection.

[0016] Preferably, the mounting hole has several evenly distributed limiting blocks on its circumference. These limiting blocks are connected to the end face of the mounting frame, with one end of each limiting block contacting the end face of the battery body. The double-row plate has several square holes corresponding to the limiting blocks. Several limiting blocks are installed on both sides of the mounting frame, i.e., the end faces of the upper and lower frames. These limiting blocks are evenly distributed circumferentially on the circumference of the mounting hole, with one end of each limiting block positioned above the mounting hole. This confines the battery body within the mounting hole. At the point where the limiting blocks overlap with the double-row plate, diamond-shaped holes are formed on the double-row plate for the limiting blocks to pass through. Due to the constraint of the limiting plates, a certain gap exists between the mounting frame and the outer casing or partition plate, protecting the battery body on the mounting frame and preventing damage from contact with the outside. This design protects the battery body.

[0017] Preferably, each of the single-row plates at one end of the mounting frame is equipped with a fixing plate, and a connecting plate is provided on the fixing plate on one side of the mounting frame. One end of the connecting plate is connected to the fixing plate. Both the upper and lower frames of the mounting frame are provided with through holes. The other end of the connecting plate passes through the through hole at one end of the mounting frame. The two ends of the conductive strip pass through the through holes of the two mounting frames respectively and are connected to the connecting plate. An electrode plate is provided on the fixing plate on the other side of the mounting frame. The cross-sectional shape of the electrode plate is L-shaped, and one side of the electrode plate is connected to the connecting plate. Single-row plates are installed on both sides of the upper end of the mounting bracket, and a fixing plate is installed on each single-row plate. The fixing plate is connected to the single-row plate. The connecting plate installed on the fixing plate passes through the perforation on the mounting bracket and places one end between the mounting brackets. Then, the fixing plates on the same side of the two mounting brackets are connected together by a conductive strip, connecting the battery bodies on the two mounting brackets together. The conductive strip also passes through the perforation on the mounting bracket, which can protect and limit the conductive strip and prevent the conductive strip from contacting the external structure. Electrode plates are installed on the fixing plate on the single-row plate on the other side of the mounting bracket. Electrode plates are installed on both mounting brackets. One electrode plate on each side is a positive electrode and the other is a negative electrode, thus realizing the normal operation of the battery pack. The motor plate is L-shaped, with one side connected to the connecting plate on the fixing plate and the other side connected to the external structure to realize the charging and discharging of the battery pack. This design can realize the charging and discharging of the battery pack.

[0018] Preferably, a plurality of limiting posts are installed on both sides of the partition plate, each limiting post corresponding to a perforation. The limiting posts are matched with the perforations of the mounting frame. A bonding plate is provided on one side of the perforation. One end of the bonding plate is connected to the mounting frame. The bonding plate is bonded to the battery body. A retaining plate is installed at the end of the limiting post. The retaining plate is bonded to the end face of the bonding plate. Because the mounting brackets on both sides of the partition plate are fixed structures during installation, they are prone to slippage, leading to inaccurate installation positions. Therefore, limiting posts are installed on the mounting plate. The limiting posts pass through the perforations of the mounting brackets and correspond to the perforations. With the cooperation of the limiting posts and the perforations, the mounting brackets are restricted to one side of the partition plate. Then, to fix the mounting brackets, a clamping plate is installed at the top of the limiting posts. The clamping plate is attached to the top surface of the bonding plate on the perforation side, thereby fixing the mounting plate on the mounting plate. The two mounting brackets are fixed to both sides of the partition plate respectively. The bonding plate installed on the perforation side is attached to the battery body, which can further limit and protect the battery body. This design can fix the mounting brackets.

[0019] The beneficial effects of this utility model are: it allows for layered installation of batteries, ensuring stable installation and connection, protecting the battery body, enabling charging and discharging of the battery pack, and fixing the mounting bracket. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 yes Figure 1 Cross-sectional view;

[0022] Figure 3 yes Figure 1 Schematic diagram of the mounting bracket;

[0023] Figure 4 yes Figure 1 Schematic diagram of the structure of the middle conductive plate;

[0024] Figure 5 yes Figure 2 A schematic diagram of the middle partition plate.

[0025] In the diagram: 1. Mounting bracket; 2. Mounting hole; 3. Divider plate; 4. Battery body; 5. Conductive plate; 6. Conductive strip; 7. Protective plate; 8. Upper frame; 9. Lower frame; 10. Connecting rod; 11. Threaded hole; 12. Push groove; 13. Single row plate; 14. Double row plate; 15. Connecting piece; 16. Limiting block; 17. Square hole; 18. Fixing plate; 19. Connecting plate; 20. Perforation; 21. Electrode plate; 22. Limiting post; 23. Adhesive plate; 24. Clamping plate. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 2 In the illustrated embodiment, a cylindrical battery pack connection structure includes:

[0028] Mounting bracket 1, there are two mounting brackets 1, and the mounting bracket 1 has several rows of evenly distributed mounting holes 2;

[0029] The partition plate 3 and two mounting brackets 1 are respectively placed on both sides of the partition plate 3, and the partition plate 3 and the mounting brackets 1 are detachably connected;

[0030] Battery body 4, which has several holes corresponding to mounting holes 2, is installed in mounting bracket 1.

[0031] The conductive plate 5 and the battery body 4 are connected through the conductive plate 5;

[0032] The conductive strip 6 has two ends connected to the conductive plates 5 on the two mounting brackets 1 on both sides, respectively.

[0033] Protective plates 7 are provided at both the front and rear ends of the mounting bracket 1, and the protective plates 7 are detachably connected to the mounting bracket 1.

[0034] like Figure 3 As shown, the mounting frame 1 includes an upper frame 8 and a lower frame 9. Both the upper frame 8 and the lower frame 9 have several mounting holes 2. The mounting holes 2 on the upper frame 8 correspond one-to-one with the mounting holes 2 on the lower frame 9. Both the upper frame 8 and the lower frame 9 are equipped with connecting rods 10. The connecting rods 10 are provided with threaded holes 11. The threaded holes 11 on the upper frame 8 and the lower frame 9 correspond to each other. The battery body 4 is placed between the upper frame 8 and the lower frame 9. Both the upper frame 8 and the lower frame 9 are provided with push grooves 12. The protection plate 7 is detachably connected to the mounting frame 1 through the cooperation with the push grooves 12.

[0035] like Figure 4 As shown, the conductive plate 5 includes a single-row plate 13 and a double-row plate 14. The single-row plate 13 is installed on the two rows of battery bodies 4 at both ends of the mounting frame 1, and the remaining battery bodies 4 are connected by the double-row plate 14. The cross-sectional shape of the double-row plate 14 is rectangular. Adjacent rows of battery bodies 4 are connected by the double-row plate 14. Several connecting pieces 15 are installed on both the single-row plate 13 and the double-row plate 14. The connecting pieces 15 correspond one-to-one with the battery bodies 4 and are in contact with the battery bodies 4. The two sides of the mounting frame 1 are provided with conductive plates 5 connected to the battery bodies 4, and one end of the conductive plate 5 is connected to the mounting frame 1.

[0036] The mounting hole 2 has several evenly distributed limiting blocks 16 on its circumference. The limiting blocks 16 are connected to the end face of the mounting bracket 1. One end of the limiting block 16 is in contact with the end face of the battery body 4. The double-row plate 14 has several square holes 17 corresponding to the limiting blocks 16.

[0037] Fixing plates 18 are installed on the single row plates 13 at one end of the mounting frame 1. A connecting plate 19 is provided on the fixing plate 18 on one side of the mounting frame 1. One end of the connecting plate 19 is connected to the fixing plate 18. The upper frame 8 and lower frame 9 of the mounting frame 1 are provided with through holes 20. The other end of the connecting plate 19 passes through the through hole 20 at one end of the mounting frame 1. The two ends of the conductive strip 6 pass through the two through holes 20 of the mounting frame 1 respectively and are connected to the connecting plate 19. An electrode plate 21 is provided on the fixing plate 18 on the other side of the mounting frame 1. The cross-sectional shape of the electrode plate 21 is L-shaped. One side of the electrode plate 21 is connected to the connecting plate 19.

[0038] like Figure 5 As shown, several limiting posts 22 are installed on both sides of the partition plate 3. Each limiting post 22 corresponds to a through hole 20. The limiting posts 22 match the through holes 20 of the mounting frame 1. A bonding plate 23 is provided on one side of the through hole 20. One end of the bonding plate 23 is connected to the mounting frame 1. The bonding plate 23 is bonded to the battery body 4. A clamping plate 24 is installed at the end of the limiting post 22. The clamping plate 24 is bonded to the end face of the bonding plate 23.

[0039] During installation, the battery body 4 is first placed between the upper frame 8 and the lower frame 9 of the mounting bracket 1, aligning the battery body 4 with the mounting holes 2 on the mounting bracket 1. Then, the upper frame 8 and the lower frame 9 are connected together by screws passing through the threaded holes 11 of the connecting rod 10 to fix the battery body 4. Protective plates 7 are then installed at both ends of the mounting bracket 1 to protect the battery body 4. The fixed battery body 4 is divided into several groups by single-row plates 13 and double-row plates 14, connecting the battery bodies 4 to form a whole. The single-row plates 13 and double-row plates 14 are connected to the mounting bracket 1, and then fixing plates 18 are installed on the single-row plates 13 on both sides.

[0040] The mounting bracket 1, which forms a whole, is placed on both sides of the partition plate 3. The limiting post 22 on the partition plate 3 is inserted into the through hole 20 of the mounting bracket 1 until the card plate 24 installed at the top of the limiting post 22 is attached to the top surface of the bonding plate 23, thus fixing the mounting bracket 1 on both sides of the partition plate 3.

[0041] Then, the conductive strip 6 is passed through the perforation 20 and connected to the connecting plate 19 on the fixing plate 18, connecting the single-row plates 13 on both sides of the mounting bracket 1 together, thus connecting the battery body 4 on both sides of the mounting bracket 1 of the partition plate 3. After connection, the electrode plate 21 is installed on the connecting plate 19 of the fixing plate 18 on the other side of the mounting bracket 1, so that the battery pack can work normally.

Claims

1. A cylindrical battery pack structure, characterized in that, include: Mounting bracket (1), two mounting brackets (1) are provided, and several rows of evenly distributed mounting holes (2) are provided on the mounting bracket (1). A partition plate (3) and two mounting brackets (1) are respectively placed on both sides of the partition plate (3), and the partition plate (3) and the mounting brackets (1) are detachably connected; The battery body (4) has several holes that correspond one-to-one with the mounting holes (2), and the battery body (4) is installed in the mounting bracket (1); The battery body (4) is connected via the conductive plate (5); The conductive strip (6) has two ends connected to the conductive plates (5) on the two mounting brackets (1) respectively. The mounting frame (1) is provided with protective plates (7) at both the front and rear ends. The protective plates (7) are detachably connected to the mounting frame (1). The mounting frame (1) includes an upper frame (8) and a lower frame (9). The upper frame (8) and the lower frame (9) are provided with a number of mounting holes (2). The mounting holes (2) on the upper frame (8) correspond one-to-one with the mounting holes (2) on the lower frame (9). The upper frame (8) and the lower frame (9) are each equipped with a connecting rod (10). The connecting rod (10) is provided with a threaded hole (11). The threaded holes (11) on the upper frame (8) and the lower frame (9) correspond to each other. The battery body (4) is placed between the upper frame (8) and the lower frame (9). Each is provided with a push groove (12). The protective plate (7) is detachably connected to the mounting frame (1) through the cooperation with the push groove (12). The conductive plate (5) includes a single-row plate (13) and a double-row plate (14). The two rows of battery bodies (4) at both ends of the mounting frame (1) are equipped with single-row plates (13), and the remaining battery bodies (4) are connected by double-row plates (14). The cross-sectional shape of the double-row plate (14) is rectangular. Adjacent rows of battery bodies (4) are connected by double-row plates (14). Several connecting pieces (15) are installed on both the single-row plate (13) and the double-row plate (14). The connecting pieces (15) correspond one-to-one with the battery body (4) and are in contact with the battery body (4). Both sides of the mounting frame (1) are A conductive plate (5) is connected to the battery body (4). One end of the conductive plate (5) is connected to the mounting bracket (1). Several evenly distributed limiting blocks (16) are provided on the circumference of the mounting hole (2). The limiting blocks (16) are connected to the end face of the mounting bracket (1). One end of the limiting blocks (16) is in contact with the end face of the battery body (4). Several square holes (17) corresponding to the limiting blocks (16) are provided on the double-row plate (14). Fixing plates (18) are installed on the single-row plate (13) at one end of the mounting bracket (1). A connecting plate (19) is provided on the fixing plate (18) on one side of the mounting bracket (1). One end of the connecting plate (19) is connected to the fixing plate (18). The mounting bracket ( 1) Both the upper frame (8) and lower frame (9) are provided with perforations (20). The other end of the connecting plate (19) passes through the perforation (20) at one end of the mounting frame (1). The two ends of the conductive strip (6) pass through the perforations (20) of the two mounting frames (1) respectively and are connected to the connecting plate (19). The fixing plate (18) on the other side of the mounting frame (1) is provided with an electrode plate (21). The cross-sectional shape of the electrode plate (21) is L-shaped. One side of the electrode plate (21) is connected to the connecting plate (19). Several limiting posts (22) are installed on both sides of the partition plate (3). The limiting posts (22) correspond one-to-one with the perforations (20). The limiting posts (22) match the perforations (20) of the mounting frame (1).A bonding plate (23) is provided on one side of the perforation (20). One end of the bonding plate (23) is connected to the mounting bracket (1). The bonding plate (23) is bonded to the battery body (4). A retaining plate (24) is installed at the end of the limiting post (22). The retaining plate (24) is bonded to the end face of the bonding plate (23).

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