An assembled battery pack

Abstract

The utility model relates to a kind of assembled battery pack in the field of battery pack, including two or more than two electric cores, two or more than two electric cores are assembled by support assembly, the support assembly includes front end cover, rear end cover and multiple detachable combined support frame, the both sides of support frame are formed with the insertion slot for matching electric core, the inside of support frame is formed with the spacer part for spacing two adjacent electric cores, support frame is held with two adjacent electric cores respectively by insertion slot, and make two adjacent electric cores between can be sequentially spliced combination by support frame, the modularity of the utility model support assembly can be set according to the actual demand of electric core, adapt to the battery pack assembly demand of different electric core quantity, improve product flexibility and expansibility, through the design of front end cover, rear end cover and support frame, ensure the stability and reliability in the installation and use process of electric core, to improve the safety of assembled battery pack combination use.

Description

Technical Field

[0001] This utility model relates to the field of battery packs, specifically to an assembled battery pack. Background Technology

[0002] With the rapid development of technology, the demand for energy storage and utilization is increasing daily. As a highly efficient and flexible energy solution, assembled battery packs have demonstrated enormous application potential in numerous fields. Thanks to their customizable nature, assembled battery packs can meet the diverse power capacity, size, and performance requirements of different devices. Assembled battery packs have wide applications and are an important force driving the development of modern technology.

[0003] Battery packs are typically assembled from multiple battery cells using specific assembly methods to meet the voltage, capacity, and power requirements of different application scenarios. During use, the battery pack stores and releases electrical energy through internal electrochemical reactions, providing stable and reliable power to external devices. Its basic structure mainly includes battery cells, a front cover, a back cover, and spacers to separate the cells. Alternatively, multiple cells can be supported and spaced using cell supports (such as cylindrical cells), allowing for the connection of appropriate cells according to actual needs.

[0004] However, existing battery pack assembly methods still have many problems. Among them, the current prismatic cell assembly methods mostly use a front cover, a back cover, and an epoxy board as spacers between the cells. The existing epoxy board installation structure is relatively simple, and after the battery pack is subjected to vibration, impact, or long-term use, it is prone to loosening or even slippage. This causes changes in the relative positions of the cells, affecting the internal structural stability of the battery pack and potentially leading to safety hazards such as short circuits. Furthermore, the existing assembly structure lacks stability and reliability in connecting multiple cells, thus affecting the safety of cell combinations and series connections via metal plates, reducing the overall performance and lifespan of the battery pack. Therefore, the existing battery pack assembly structure urgently needs improvement to enhance the stability, reliability, and safety of the battery pack. Utility Model Content

[0005] The purpose of this invention is to address the above-mentioned deficiencies and provide an assembled battery pack to solve the technical problems in the background art of how to improve the stability and reliability of the assembly and connection of square battery cells, and how to improve the performance and safety of battery cell combinations.

[0006] The objective of this utility model is achieved through the following means:

[0007] An assembled battery pack includes two or more battery cells, which are assembled by a support assembly. The support assembly includes a front cover, a rear cover, and multiple detachable and combinable support frames. Both sides of the support frames have insertion slots for mating battery cells. The support frames are mated and secured to one end of the battery cells via the insertion slots. The interior of the support frames has partitions for separating two adjacent battery cells, located between the two insertion slots. The support frames are secured to two adjacent battery cells via the insertion slots, allowing adjacent battery cells to be sequentially assembled using the support frames. One side of the support frame has an insertion structure, and the other side has a securing structure. Adjacent support frames are mated and connected via the insertion structure and the securing structure. The side of the front cover has a locking groove for mating and securing with the battery cells, and a limiting structure for mating and securing with the insertion structure. The side of the rear cover has a limiting groove for mating and securing with the battery cells, and a positioning structure for mating and securing with the securing structure.

[0008] Furthermore, as described above, the top of the battery cell is provided with a positive terminal and a negative terminal, and adjacent battery cells are connected in series by metal sheets. The top of the front cover, the rear cover, and the support frame are all provided with clearance openings to avoid the positive terminal and the negative terminal of the battery cell.

[0009] By creating clearance openings, the front cover, rear cover, and support frame are prevented from obstructing the positive and negative terminals of the battery cells, ensuring that adjacent battery cells can be smoothly connected in series via metal sheets. This guarantees the normal operation of battery cell series connection, improves the convenience and reliability of battery cell combination, and ultimately helps to improve the overall performance of the battery pack.

[0010] Furthermore, as described above, the side of the support frame has a raised support flange, which surrounds and forms an insertion slot for mating battery cells inside. The support flange wraps around the outer side of the battery cell, so that the insertion slot is mated and inserted with one side of the battery cell.

[0011] The support flange wraps around the outer side of the battery cell, increasing the contact area between the support frame and the battery cell. This makes the mating and insertion of the insertion slot and the battery cell more secure. The support flange and insertion slot can also wrap and protect the corners of the battery cell, effectively preventing the battery cell from loosening or slipping off the support frame during vibration, impact or long-term use of the battery pack. This improves the stability of the battery cell installation and thus ensures the stability of the internal structure of the battery pack.

[0012] Furthermore, as described above, the middle part of the partition is provided with a through hole that communicates with the insertion slot, and the two sides of the partition are in contact with two battery cells respectively.

[0013] The two sides of the partition contact two battery cells respectively, which serves to separate the two adjacent battery cells and prevent the battery cells from coming into contact with each other, thus preventing safety hazards such as short circuits. At the same time, a through hole is opened in the middle, which reduces the weight of the support frame to a certain extent while ensuring the separation effect, without affecting its support and separation function for the battery cells, thus helping to improve the stability and safety of the battery pack assembly structure.

[0014] In addition, the spacing between the two cells is arranged by the partition, and the heat dissipation of the cells is ensured by the through holes.

[0015] Furthermore, as described above, an insulating plate or pad is adhered to the side of the partition near the battery cell.

[0016] Insulating plates or pads further enhance the insulation performance between the separator and the battery cell, effectively preventing short circuits caused by accidental contact between the battery cells, improving the safety of battery cell combination, and ensuring the reliability and stability of the battery pack during long-term use.

[0017] Further, as described above, the plug-in structure includes a plug-in portion and a plug-in post disposed on the side of the plug-in portion. The plug-in portion is formed on the side of the support frame. The limiting structure includes a limiting portion and a limiting hole disposed on the side of the limiting portion. The limiting portion and the plug-in portion are wrapped around the side of the battery cell and come into contact with each other through their ends, so that the plug-in post and the limiting hole are plugged in and matched.

[0018] By inserting and aligning the plugs and limiting holes, a stable connection between the support frame and the front cover is achieved, enabling the front cover to better secure the battery cells, enhancing the stability and reliability of the battery cell installation, preventing the battery cells from changing position due to the loosening of the front cover, and thus improving the stability of the internal structure of the battery pack.

[0019] Furthermore, as described above, the holding structure includes a holding part and a holding hole disposed on the side of the holding part. The end of the holding part is paired with an adjacent support frame and is inserted into a plug-in post through the holding hole, so that the two adjacent support frames can be detachably combined and inserted.

[0020] The clamping structure enables detachable and modular insertion between two adjacent support frames, ensuring the stability of the connection between the support frames and facilitating the assembly and disassembly of the battery pack. Through the detachable and modular connection of multiple support frames, the battery pack can be assembled according to the needs of the cells, improving the stability and reliability of the installation and connection of multiple cells and helping to improve the overall performance of the battery pack.

[0021] Further as described above, the positioning structure includes a positioning part and a positioning post disposed on the side of the positioning part, so that the support frame near the rear end cover contacts the positioning part through the retaining part, and the retaining hole is inserted and assembled with the positioning post.

[0022] The positioning structure ensures precise positioning and stable connection between the rear cover support frame and the rear cover by aligning the positioning pins with the retaining holes. This further enhances the stability of cell installation, prevents relative displacement between the rear cover and the support frame, ensures the stability of the internal structure of the battery pack, and improves the safety of battery pack use.

[0023] Furthermore, as described above, both the front cover and the rear cover have through mesh openings on their sides.

[0024] The conductive mesh openings on the sides of the front and rear covers facilitate heat dissipation during battery pack use, effectively reducing the internal temperature of the battery pack and preventing excessive temperature from affecting battery performance and lifespan. It also helps prevent safety hazards caused by high temperatures, thus improving the safety and reliability of the battery pack.

[0025] Furthermore, as described above, the bracket assembly also includes a packaging strap that wraps around the front and rear covers.

[0026] The packaging straps wrap around the front and rear covers, further enhancing the structural stability of the entire support assembly. This provides additional fixation and protection for the front and rear covers, as well as the internal cells and support frame, effectively preventing loosening or displacement of components due to vibration, impact, or other factors during transportation and use. This improves the stability and reliability of the battery pack assembly structure, ensuring the overall performance and lifespan of the battery pack.

[0027] The beneficial effects of this utility model are as follows: The insertion slots on both sides of the support frame can directly hold and insert the battery cell at one end through the insertion slots. Combined with the spacing of adjacent battery cells by the internal partition of the support frame, the risk of short circuit caused by contact between battery cells is effectively avoided. Adjacent support frames are connected by the matching of the insertion structure and the holding structure to form a detachable splicing combination structure. The modularity of the bracket assembly can be set according to the actual needs of the battery cells, adapting to the battery pack assembly needs of different numbers of battery cells, improving product flexibility and expandability. At the same time, through the holding of the battery cell end by the locking slot of the front cover, combined with the matching of the locking structure and the insertion structure of the support frame, the locking of the rear cover by the locking slot of the battery cell, and the matching of the positioning structure and the locking structure of the support frame, the design of the front cover, rear cover and support frame ensures the stability and reliability of the battery cell during installation and use, avoids the problem of metal sheet failure caused by battery cell displacement, and thus improves the safety of the assembled battery pack. Attached Figure Description

[0028] Figure 1 This is a top-view schematic diagram of the overall structure of this embodiment;

[0029] Figure 2This is a schematic diagram of the overall structure from a bottom-view perspective in this embodiment;

[0030] Figure 3 This is a schematic diagram of the exploded structure of this embodiment;

[0031] Figure 4 for Figure 3 A magnified view of part A in the diagram;

[0032] Figure 5 for Figure 3 A magnified view of part B in the diagram;

[0033] Figure 6 for Figure 3 A magnified view of part C in the diagram;

[0034] Figure 7 This is a schematic diagram of the structure of this embodiment;

[0035] The reference numerals in the figure are as follows:

[0036] 100 - Battery cell, 101 - Positive terminal, 102 - Negative terminal;

[0037] 200-Front end cover, 201-Snap-fit ​​groove, 202-Limiting part, 203-Limiting hole;

[0038] 300-Rear end cover, 301-Limiting groove, 302-Positioning part, 303-Positioning post;

[0039] 400-Support bracket, 401-Insertion slot, 402-Blocking part, 403-Support flange, 404-Through hole, 405-Insertion part, 406-Insertion post, 407-Clamping part, 408-Clamping hole;

[0040] 500 - Insulation board, 600 - Mesh, 700 - Packaging tape. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0042] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0043] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0044] In this embodiment, refer to Figures 1-7 The present invention describes an assembled battery pack comprising three battery cells 100, which are assembled using a support assembly. The support assembly includes a front cover 200, a rear cover 300, and two detachably combinable support frames 400. Each support frame 400 has insertion slots 401 on both sides for mating the battery cells 100. The support frame 400 is mated and secured to one end of the battery cell 100 via the insertion slots 401. Inside each support frame 400, a spacer 402 is formed to separate two adjacent battery cells 100. The spacer 402 is positioned between the two insertion slots 401. The support frame 400 is connected to the adjacent two battery cells 100 via the insertion slots 401. The battery cell 100 is held in place, and two adjacent battery cells 100 can be sequentially spliced ​​and combined through the support frame 400. One side of the support frame 400 has a plug-in structure, and the other side of the support frame 400 has a holding structure. Two adjacent support frames 400 are paired and connected through the plug-in structure and the holding structure. The side of the front cover 200 is provided with a snap-fit ​​groove 201 that is paired and held with the battery cell 100, and the side of the front cover 200 is provided with a limiting structure that can be plugged and paired with the plug-in structure. The side of the rear cover 300 is provided with a limiting groove 301 that is paired and held with the battery cell 100, and the side of the rear cover 300 is provided with a positioning structure that can be plugged and paired with the holding structure.

[0045] The support frame 400 adopts a detachable and combinable design. When a single support frame 400 or cell 100 fails, partial replacement can be achieved through the quick separation of the plug-in structure and the clamping structure without disassembling the entire battery pack, which greatly reduces maintenance costs and time. At the same time, the modular nature of the bracket assembly allows for the addition or reduction of the number of support frames 400 according to actual needs, adapting to the battery pack assembly requirements of different numbers of cells 100, and improving the flexibility and scalability of product design.

[0046] The top of the battery cell 100 is provided with a positive terminal 101 and a negative terminal 102. Adjacent battery cells 100 are connected in series by metal sheets. The top of the front cover 200, the rear cover 300 and the support frame 400 are all provided with clearance openings to avoid the positive terminal 101 and the negative terminal 102 of the battery cell 100.

[0047] By creating clearance openings, the front cover 200, rear cover 300, and support frame 400 are prevented from obstructing the positive terminal 101 and negative terminal 102 of the battery cell 100. This ensures that adjacent battery cells 100 can be smoothly connected in series via metal sheets, guaranteeing the normal operation of the battery cell 100 series connection. This improves the convenience and reliability of the combined use of battery cells 100, and thus helps to improve the overall performance of the battery pack.

[0048] The support frame 400 has a raised support flange 403 on its side. The support flange 403 surrounds and forms an insertion slot 401 for mating the battery cell 100 inside. The support flange 403 wraps around the outer side of the battery cell 100 so that the insertion slot 401 is mated and inserted with one side of the battery cell 100.

[0049] The support flange 403 wraps around the outer side of the cell 100, increasing the contact area between the support frame 400 and the cell 100. This makes the mating insertion of the insertion slot 401 and the cell 100 more stable. The support flange 403 and the insertion slot 401 can wrap and protect the corners of the cell 100, effectively preventing the cell 100 from loosening or slipping off the support frame 400 during vibration, impact, or long-term use of the battery pack. This improves the stability of the cell 100 installation and thus ensures the stability of the internal structure of the battery pack.

[0050] The partition 402 has a through hole 404 in its center that communicates with the insertion slot 401. The two sides of the partition 402 contact two battery cells 100 respectively. The contact between the two sides of the partition 402 and the two battery cells 100 serves to separate two adjacent battery cells 100, preventing short circuits and other safety hazards caused by contact between the battery cells 100. Simultaneously, the through hole 404 in the center, while ensuring the separation effect, reduces the weight of the support frame 400 to some extent without affecting its support and separation functions for the battery cells 100, thus contributing to improved stability and safety of the battery pack assembly structure.

[0051] The spacing of the partition 402 ensures a gap between the two battery cells 100, and the through hole 404 ensures heat dissipation of the battery cell 100. The partition 402 inside the support frame 400 physically separates the adjacent battery cells 100, while forming a double protection with the insertion slots 401 on both sides of the support frame 400.

[0052] An insulating plate 500 is attached to the side of the partition 402 near the cell 100. The insulating plate 500 or pad further enhances the insulation performance between the partition 402 and the cell 100, effectively preventing short circuits caused by accidental contact between the cells 100, improving the safety of the combined use of the cells 100, and ensuring the reliability and stability of the battery pack during long-term use.

[0053] Specifically, in this embodiment, the insulating board 500 is made of epoxy board.

[0054] The insertion structure includes an insertion part 405 and an insertion post 406 disposed on the side of the insertion part 405. The insertion part 405 is formed on the side of the support frame 400. The limiting structure includes a limiting part 202 and a limiting hole 203 disposed on the side of the limiting part 202. The limiting part 202 and the insertion part are wrapped around the side of the cell 100 and contact each other through the ends, so that the insertion post and the limiting hole 203 are inserted and assembled.

[0055] By inserting and assembling the plug post 406 with the limiting hole 203, a stable connection is achieved between the support frame 400 and the front cover 200, which enables the front cover 200 to better fix the battery cell 100, enhances the stability and reliability of the battery cell 100 installation, prevents the battery cell 100 from changing position due to the loosening of the front cover 200, and thus improves the stability of the internal structure of the battery pack.

[0056] The holding structure includes a holding part 407 and a holding hole 408 provided on the side of the holding part 407. The end of the holding part 407 is paired with the adjacent support frame 400 and is paired with the insertion post 406 through the holding hole 408, so that the two adjacent support frames 400 can be detachably combined and inserted.

[0057] The clamping structure enables detachable combination insertion between two adjacent support frames 400, which not only ensures the connection stability between the support frames 400, but also facilitates the assembly and disassembly of the battery pack. Through the detachable combination connection of multiple support frames 400, the battery pack can be assembled according to the needs of the cells 100, which improves the stability and reliability of the installation connection of multiple cells 100 and helps to improve the overall performance of the battery pack.

[0058] The positioning structure includes a positioning part 302 and a positioning post 303 disposed on the side of the positioning part 302, so that the support frame 400 near the rear end cover 300 contacts the positioning part 302 through the holding part 407, and the holding hole 408 is inserted and assembled with the positioning post 303.

[0059] The positioning structure, through the insertion and assembly of the positioning post 303 and the retaining hole 408, ensures the precise positioning and stable connection between the support frame 400 of the rear cover 300 and the rear cover 300, further enhancing the stability of the cell 100 installation, preventing relative displacement between the rear cover 300 and the support frame 400, ensuring the stability of the internal structure of the battery pack, and improving the safety of the battery pack.

[0060] Both the front cover 200 and the rear cover 300 have conductive mesh holes 600 on their sides. These conductive mesh holes 600 on the sides of the front cover 200 and the rear cover 300 facilitate heat dissipation during battery pack use, effectively reducing the internal temperature of the battery pack and preventing excessive temperature from affecting battery performance and lifespan. They also help prevent safety hazards caused by high temperatures, thus improving the safety and reliability of the battery pack.

[0061] The bracket assembly also includes a packaging strap 700, which wraps around the front cover 200 and the rear cover 300.

[0062] The packaging strap 700 wraps around the front cover 200 and the rear cover 300, further enhancing the structural stability of the entire bracket assembly. It provides additional fixation and protection for the front cover 200, the rear cover 300, as well as the internal battery cells 100 and support frame 400, effectively preventing the components from loosening or shifting due to vibration, impact, or other factors during transportation and use. This improves the stability and reliability of the battery pack assembly structure, ensuring the overall performance and service life of the battery pack.

[0063] The specific operating principle in this embodiment is as follows:

[0064] The front cover 200 is secured to one side of the battery cell 100 via the snap-fit ​​groove 201, providing protection for the corners of the battery cell 100. A support frame 400 is secured to the other side of the battery cell 100 via an insertion groove 401 on one side. Simultaneously, the side of the second battery cell 100 is secured to the insertion groove 401 on the other side of the support frame 400. This sequential installation of the support frame 400 and battery cells 100 creates a modular assembly, allowing for quick assembly according to the battery cell 100's configuration requirements. The modularity of the bracket assembly allows for customization based on the actual needs of the battery cells 100, adapting to battery pack assembly requirements with varying numbers of battery cells 100, thus enhancing product flexibility and scalability. The rear cover 300 is secured to the last battery cell 100 via a limiting groove 301. Packaging tape 70 is then used. The battery cells 100 are wound together to complete the splicing and combination of multiple cells 100. Adjacent support frames 400 can be paired and inserted with the insertion post 406 through the retaining hole 408, ensuring precise and stable assembly of the two support frames 400 and guaranteeing the stability and reliability of the connection. Simultaneously, the sides of the front cover 200 and rear cover 300 are paired and inserted with the insertion post 406 and retaining hole 408 of the support frame 400 through the limiting hole 203 and positioning post 303, respectively, to support and install multiple cells 100. The design of the front cover 200, rear cover 300, and support frame 400 ensures the stability and reliability of the cells 100 during installation and use, avoiding metal sheet connection failures caused by cell 100 displacement, thereby improving the safety of the assembled battery pack.

[0065] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A battery pack assembly comprising two or more battery cells, wherein the two or more battery cells are assembled by a support assembly, characterized in that: The support assembly includes a front cover, a rear cover, and multiple detachable and combinable support frames. Both sides of the support frame have insertion slots for mating battery cells. The support frame is mated and secured to one end of the battery cell via the insertion slots. The interior of the support frame has a partition portion for separating two adjacent battery cells, located between the two insertion slots. The support frame is secured to two adjacent battery cells via the insertion slots, allowing adjacent battery cells to be sequentially assembled using the support frame. One side of the support frame has a plug-in structure, and the other side has a locking structure. Adjacent support frames are mated and connected via the plug-in structure and the locking structure. The side of the front cover has a locking slot for mating and securing with the battery cell, and a limiting structure for mating and securing with the plug-in structure. The side of the rear cover has a limiting slot for mating and securing with the battery cell, and a positioning structure for mating and securing with the locking structure.

2. The battery pack assembly according to claim 1, characterized in that: The top of the battery cell is provided with a positive terminal and a negative terminal. Adjacent battery cells are connected in series by metal sheets. The top of the front cover, rear cover and support frame are all provided with clearance openings to avoid the positive terminal and negative terminal of the battery cell.

3. The battery pack assembly according to claim 1, characterized in that: The support frame has a raised support flange on its side. The support flange surrounds and forms an insertion slot for mating battery cells inside. The support flange wraps around the outer side of the battery cell so that the insertion slot is mated and inserted into one side of the battery cell.

4. The battery pack assembly according to claim 1, characterized in that: The partition section has a through hole in the middle that communicates with the insertion slot, and the two sides of the partition section are in contact with two battery cells respectively.

5. The battery pack assembly according to claim 4, characterized in that: An insulating plate or pad is attached to the side of the partition near the battery cell.

6. The battery pack assembly according to claim 1, characterized in that: The insertion structure includes an insertion part and an insertion post disposed on the side of the insertion part. The insertion part is formed on the side of the support frame. The limiting structure includes a limiting part and a limiting hole disposed on the side of the limiting part. The limiting part and the insertion part are wrapped around the side of the battery cell and contact each other through their ends, so that the insertion post and the limiting hole are inserted and matched.

7. The battery pack assembly according to claim 6, characterized in that: The clamping structure includes a clamping part and a clamping hole provided on the side of the clamping part. The end of the clamping part is paired with the adjacent support frame and is inserted into the insertion post through the clamping hole, so that the two adjacent support frames can be detachably combined and inserted.

8. The battery pack assembly according to claim 7, characterized in that: The positioning structure includes a positioning part and a positioning post disposed on the side of the positioning part, so that the support frame near the rear end cover contacts the positioning part through the retaining part, and the retaining hole is inserted and assembled with the positioning post.

9. A battery pack assembly according to any one of claims 1-8, characterized in that: Both the front and rear covers have through mesh openings on their sides.

10. A battery pack assembly according to any one of claims 1-8, characterized in that: The bracket assembly also includes a packaging strap that wraps around the front and rear covers.

Images