Battery packs and electrical devices

Abstract

This application relates to the field of battery technology and discloses a battery pack and power supply device, including a housing, a battery management system, a battery pack, and a first terminal block. The housing contains an electrical cavity and a battery cavity. The battery management system is located within the electrical cavity, and the battery pack is located within the battery cavity. The first terminal block is located inside the housing and is electrically connected to the battery pack. The first terminal block is located outside the electrical cavity and is electrically connected to the battery management system. Thus, the battery pack is electrically connected to the battery management system through the first terminal block, enabling the battery management system to collect information from the battery pack. Because the first terminal block is located outside the electrical cavity, it does not occupy space within the electrical cavity, facilitating the placement of other electrical components within the electrical cavity.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery pack and an electrical device. Background Technology

[0002] The battery pack is a core component in electric vehicles, energy storage systems, and other fields, and includes modules such as the housing, battery pack, battery management system, thermal management system, and structural components. The battery pack has a battery compartment and an electrical compartment, separated by a partition. The battery pack is housed within the battery compartment, while the battery management system is housed within the electrical compartment.

[0003] To facilitate the connection of the battery management system (BMS) to the battery pack via sampling lines, interlocking connectors and terminals are often used. The terminals connect to the BMS within the electrical cavity, and the battery pack, once installed in the cavity, connects to the connectors. The BMS and battery pack are then connected via the plug-in connection between the connectors and terminals. However, the connectors are often located within the electrical cavity, further encroaching on valuable space and hindering the placement of other electrical components within the cavity.

[0004] Therefore, how to solve or improve the problem that the installation of terminal blocks in the battery pack requires space within the electrical cavity has become an important technical problem for those skilled in the art to solve. Summary of the Invention

[0005] This application provides a battery pack and an electrical device to solve or improve the problem in the related art that the installation of a terminal block in the battery pack requires space within the electrical cavity.

[0006] In a first aspect, this application provides a battery pack, comprising: The enclosure contains an electrical cavity and a battery cavity. The battery management system is located within the electrical cavity; The battery pack is disposed within the battery cavity; A first terminal block is disposed inside the housing and is electrically connected to the battery pack. The first terminal block is located outside the electrical cavity and is electrically connected to the battery management system.

[0007] In one alternative embodiment, the housing includes: A frame having a receiving cavity, the frame including a first and a second opposing frame; A first partition is at least partially disposed within the receiving cavity. The two ends of the first partition are respectively connected to the first frame and the second frame. One side of the first partition and the frame enclose the electrical cavity. A separator assembly is connected to the frame, and the other side of the first separator, together with the frame and the separator assembly, forms the battery cavity; The first terminal block is disposed on the partition assembly.

[0008] In one alternative embodiment, the partition assembly includes a second partition and a third partition opposite to each other, with the two ends of the first partition connected to the second partition and the third partition respectively, the second partition connected to the first frame, the third partition connected to the second frame, and the first terminal block disposed on the second partition and / or the third partition.

[0009] In one alternative embodiment, the separator assembly further includes a fourth separator, which is at least partially disposed within the receiving cavity. The two ends of the fourth separator are connected to the first frame and the second frame, respectively, and are also connected to the second separator and the third separator, respectively. The battery cavity is located between the first separator and the fourth separator.

[0010] In one alternative embodiment, the surface protrusion of the first frame forms the second partition; And / or, the surface protrusions of the second frame form the third partition.

[0011] In one optional embodiment, the separator assembly further includes a fifth separator, the frame has opposing first and second end faces, the second separator is connected to the first end face, the fifth separator is connected to the second end face, and the battery pack further includes: A partition plate is disposed inside the battery cavity and divides the battery cavity into a first battery cavity and a second battery cavity. The battery pack is disposed in both the first battery cavity and the second battery cavity. The first terminal block is electrically connected to the battery pack in the first battery cavity. The second terminal block is disposed on the fifth partition and is electrically connected to the battery pack in the second battery cavity.

[0012] In one optional embodiment, a recessed groove is provided on the side of the frame facing away from the first end face, the bottom surface of the recessed groove is the second end face, the fifth partition is located in the recessed groove, and the second terminal block is located between the side wall of the recessed groove and the fifth partition.

[0013] In one alternative embodiment, the fifth partition plate is formed by protruding from the second end face in a direction away from the first end face.

[0014] In one alternative embodiment, the first terminal block and / or the second terminal block are disposed toward the electrical cavity.

[0015] In one alternative embodiment, a first cover is further included, which covers the first end face, and the first terminal block is located between the inner wall of the first cover and the second partition and / or the third partition.

[0016] In one optional embodiment, the battery pack includes a plurality of battery cells arranged sequentially, and the battery pack further includes: A first flexible circuit board is electrically connected to the first terminal block. The extension direction of the first flexible circuit board is consistent with the arrangement direction of each battery cell of the battery pack in the first battery cavity. Each battery cell of the battery pack in the first battery cavity is electrically connected to the first flexible circuit board.

[0017] In one optional embodiment, multiple battery packs are sequentially arranged within the first battery cavity. The number of the first terminal block and the first flexible circuit board is the same as the number of battery packs within the first battery cavity. Furthermore, the arrangement directions of each battery pack, each first terminal block, and each first flexible circuit board within the first battery cavity are the same. The first flexible circuit board is electrically connected to each of the first terminal blocks in a one-to-one correspondence, and the first flexible circuit board is electrically connected to each of the individual battery cells of each battery pack within the first battery cavity in a one-to-one correspondence.

[0018] In one optional embodiment, the battery pack includes a plurality of battery cells arranged sequentially, and the battery pack further includes: The second flexible circuit board is electrically connected to the second terminal block. The extension direction of the second flexible circuit board is consistent with the arrangement direction of each battery cell of the battery pack in the second battery cavity. Each battery cell of the battery pack in the second battery cavity is electrically connected to the second flexible circuit board.

[0019] In one optional embodiment, multiple battery packs are sequentially arranged within the second battery cavity. The number of second terminal blocks and second flexible circuit boards is the same as the number of battery packs within the second battery cavity. Furthermore, the arrangement directions of each battery pack, each second terminal block, and each second flexible circuit board within the second battery cavity are the same. The second flexible circuit board is electrically connected to each of the second terminal blocks in a one-to-one correspondence, and the second flexible circuit board is electrically connected to each of the individual battery cells of each battery pack within the second battery cavity in a one-to-one correspondence.

[0020] In one optional embodiment, the housing is provided with a first discharge chamber and a second discharge chamber, a first discharge hole for the passage of discharged materials is provided between the first battery chamber and the first discharge chamber, and a second discharge hole for the passage of discharged materials is provided between the second battery chamber and the second discharge chamber, and the battery pack further includes: At least two explosion-proof valves are installed on the enclosure, and each explosion-proof valve is connected to the first discharge chamber and the second discharge chamber respectively.

[0021] In one optional embodiment, the housing further includes a first battery bracket and a second battery bracket, wherein the first battery bracket, the partition plate, and the second battery bracket are arranged sequentially at intervals along a first direction, the first direction being the height direction of the battery pack, and a first discharge cavity is formed between the partition plate and the first battery bracket, and a second discharge cavity is formed between the partition plate and the second battery bracket. The first battery cavity is located on the side of the first battery bracket away from the partition plate, and the first battery bracket is provided with the first discharge hole; The second battery cavity is located on the side of the second battery bracket away from the partition plate, and the second battery bracket is provided with the second discharge hole.

[0022] In one alternative embodiment, a first support post is provided on the side of the first battery holder near the partition plate, and the first support post abuts against the partition plate. The second battery holder has a second support column on the side near the partition plate, and the second support column abuts against the partition plate.

[0023] In one alternative implementation, the first pillar and the second pillar are aligned in the extending direction and abut against opposite sides of the partition plate, respectively.

[0024] In one alternative implementation, the first support is tapered, and the cross-sectional area of ​​the first support gradually decreases in the direction close to the partition plate. And / or, the second pillar is configured to be tapered, and the cross-sectional area of ​​the second pillar gradually decreases in the direction close to the partition plate.

[0025] In one optional implementation, multiple first pillars are provided, with adjacent first pillars spaced apart. And / or, multiple second pillars are provided, with adjacent second pillars spaced apart.

[0026] In one optional embodiment, each of the explosion-proof valves is respectively disposed on the outer wall of the frame, and a first discharge channel and a second discharge channel are provided at intervals inside the frame. The first discharge chamber and the second discharge chamber are located on the inner side of the frame, and the first battery bracket, the partition plate and the second battery bracket are respectively connected to the inner wall of the frame. The inner wall of the frame is provided with a first opening and a second opening respectively. The first discharge channel is connected to the first discharge chamber and the second discharge chamber through the first opening, and the second discharge channel is connected to the first discharge chamber and the second discharge chamber through the second opening.

[0027] In one optional embodiment, a protruding edge is provided on the inner wall of the frame, and the partition plate is placed on the protruding edge. The protruding edge has a first side and a second side opposite to each other in the first direction. The first opening portion is located on the first side of the convex edge and communicates with the first discharge cavity; the first opening portion is located on the second side of the convex edge and communicates with the second discharge cavity. And / or, the second port portion is located on the first side of the convex edge and communicates with the first discharge cavity, and the second port portion is located on the second side of the convex edge and communicates with the second discharge cavity.

[0028] In one alternative embodiment, the first port and the second port are located on opposite sides of the first discharge chamber and the second discharge chamber in a third direction, respectively.

[0029] In one alternative implementation, multiple first outlets are provided along the extension direction of the first discharge channel; And / or, the second port is provided in multiple locations along the extension direction of the second discharge channel.

[0030] In one optional embodiment, a first mounting portion is provided on the side of the first battery bracket near the first battery cavity. The first mounting portion is used to mount a single battery cell, and the first discharge hole penetrates through the first mounting portion and the first battery bracket. The second battery bracket has a second mounting part on the side near the second battery cavity. The second mounting part is used to mount the battery cell. The second discharge hole passes through the second mounting part and the second battery bracket.

[0031] In one optional embodiment, a first explosion-proof plate is provided inside the first discharge hole, and the discharged material can break through the first explosion-proof plate; And / or, a second explosion-proof plate is provided in the second discharge port, and the discharged material can break through the second explosion-proof plate.

[0032] In one alternative embodiment, the housing further includes a side beam connected to the outer wall of the frame, the side beam being used for connection to a mounting point.

[0033] In one alternative implementation, it further includes: The terminal block includes a first power connection section, a connecting section, and a second power connection section that are connected and electrically conductive in sequence. The first power connection section is electrically connected to the battery pack in the first battery cavity, and the second power connection section is electrically connected to the battery pack in the second battery cavity. The connecting section is configured as a flexible component.

[0034] Secondly, this application also provides an electrical device including any of the battery packs described above.

[0035] This application provides a battery pack, including a housing, a battery management system, a battery pack, and a first terminal block. The housing contains an electrical cavity and a battery cavity. The battery management system is located within the electrical cavity, and the battery pack is located within the battery cavity. The first terminal block is located inside the housing and is electrically connected to the battery pack. The first terminal block is located outside the electrical cavity and is electrically connected to the battery management system, allowing the battery pack to be electrically connected to the battery management system via the first terminal block, enabling the battery management system to collect information from the battery pack. Because the first terminal block is located outside the electrical cavity, it does not occupy space within the electrical cavity, facilitating the placement of other electrical components within the electrical cavity. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this application, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a first-view exploded view of a battery pack according to an embodiment of this application; Figure 2 for Figure 1 A magnified view of part A in the diagram; Figure 3 This is a second-view exploded view of a battery pack according to an embodiment of this application; Figure 4 for Figure 3 A magnified view of part B in the diagram; Figure 5 This is a third-view axonometric view of the frame of a battery pack according to an embodiment of this application; Figure 6 This is a fourth-view axonometric view of the frame of a battery pack according to an embodiment of this application; Figure 7 This is a top view of a battery pack according to an embodiment of this application; Figure 8 for Figure 7 Sectional view at CC; Figure 9 for Figure 8 A magnified view of part of D; Figure 10 for Figure 8 A magnified view of part of E in the diagram; Figure 11 This is a schematic diagram of the terminal block structure of a battery pack according to an embodiment of this application; Figure 12 This is a cross-sectional schematic diagram of a battery pack according to an embodiment of this application; Figure 13 for Figure 12 A magnified view of part of F; Figure 14 for Figure 12 A magnified view of a portion of G; Figure 15 This is a schematic diagram of the external structure of a battery pack according to an embodiment of this application; Figure 16 This is a schematic diagram of the first-view structure of a battery pack after the third frame is hidden, according to an embodiment of this application. Figure 17 This is a first exploded view of a battery pack with the battery group and third frame hidden, according to an embodiment of this application. Figure 18 for Figure 17 A magnified view of part of H; Figure 19 for Figure 17 A magnified view of part of J; Figure 20 This is a schematic diagram of a second-view structure of a battery pack after the battery group and the third frame are hidden, according to an embodiment of this application. Figure 21 This is a second exploded view of a battery pack with the battery group and third frame hidden, according to an embodiment of this application. Figure 22 for Figure 21 A magnified view of part of K; Figure 23 for Figure 21 A magnified view of a portion of L; Figure 24 This is a schematic diagram of the frame structure of a battery pack according to an embodiment of this application.

[0038] Explanation of reference numerals in the attached figures: 1. First partition; 101. Electrical cavity; 2. Partition assembly; 21. Second partition; 22. Third partition; 23. Fourth partition; 24. Fifth partition; 3. Frame; 301. First frame; 3011. First discharge channel; 3012. First opening; 302. Second frame; 3021. Second discharge channel; 3022. Second opening; 303. Third frame; 3031. Third opening; 3032. Fourth opening; 304. Fourth frame; 31. First end face; 32. Second end face; 33. Recessed groove; 34. Protruding edge; 4. First terminal block; 5. Divider plate; 51. First battery cavity; 52. Second battery cavity; 6. Terminal block; 61. First electrical connection section; 62. 63. Connecting section; 7. Second power connection section; 8. Battery cell; 9. Second terminal block; 10. First cover; 11. Second cover; 12. First flexible circuit board; 13. Second flexible circuit board; 14. Battery management system; 15. First discharge chamber; 16. Second discharge chamber; 17. First battery bracket; 18. First discharge hole; 19. First support column; 10. First mounting part; 11. First explosion-proof plate; 12. Second explosion-proof valve; 13. Second explosion-proof valve; 24. Side beam; X, Second direction; Y, Third direction; Z, First direction. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The following is combined with Figures 1 to 24 This describes an embodiment of the present application.

[0041] According to embodiments of this application, in one aspect, a battery pack is provided, such as... Figures 1 to 4 As shown, the system includes a housing, a battery management system 13, a battery pack, and a first terminal block 4. The housing contains an electrical cavity 101 and a battery cavity. The battery management system 13 is located within the electrical cavity 101, and the battery pack is located within the battery cavity. The first terminal block 4 is located inside the housing and is electrically connected to the battery pack. The first terminal block 4 is located outside the electrical cavity 101 and is electrically connected to the battery management system 13, thus enabling the battery management system 13 to collect information from the battery pack.

[0042] Specifically, the battery management system 13 inside the electrical cavity 101 is connected to a wire harness with terminals. The terminals are plugged into the first terminal block 4 to conduct electricity, thereby connecting the battery management system 13 to the battery pack.

[0043] With this configuration, since the first terminal block 4 is located outside the electrical cavity 101, the first terminal block 4 does not need to occupy the space inside the electrical cavity 101, which facilitates the installation of other electrical components inside the electrical cavity 101.

[0044] In one embodiment, the housing includes a frame 3, a first partition 1, a partition assembly 2, a battery pack, and a first terminal block 4.

[0045] The frame 3 is provided with a receiving cavity, and the frame 3 includes a first sidewall 301 and a second sidewall 302 that are opposite each other.

[0046] The first partition 1 is at least partially disposed within the receiving cavity. The two ends of the first partition 1 are connected to the first frame 301 and the second frame 302, respectively. The first partition 1 has opposing first and second surfaces. The first surface of the first partition 1 and the frame 3 enclose an electrical cavity 101.

[0047] The separator assembly 2 is connected to the frame 3, and the second side of the first separator 1, the frame 3, and the separator assembly 2 together form a battery cavity.

[0048] The first terminal block 4 is disposed on the partition assembly 2 and is electrically connected to the battery pack. The battery management system 13 in the electrical cavity 101 is connected to a wire harness with terminals. The terminals are plugged into the first terminal block 4 to conduct electricity, thereby electrically connecting the battery management system 13 to the battery pack.

[0049] With this configuration, since the first terminal block 4 is mounted on the partition assembly 2, and the partition assembly 2, frame 3, and first partition 1 form a battery cavity, with the battery cavity and electrical cavity 101 located on opposite sides of the first partition 1, the first terminal block 4 is positioned outside the electrical cavity 101. Therefore, the first terminal block 4 does not need to occupy space within the electrical cavity 101, facilitating the placement of other electrical components within the electrical cavity 101.

[0050] Specifically, the height direction of the battery pack is the first direction Z, the length direction of the battery pack is the second direction X, and the width direction of the battery pack is the third direction Y.

[0051] The first partition 1 is connected to the inner wall of the frame 3 at both ends in the third direction Y. The second partition 21 is connected to the frame 3 on one side in the first direction Z, and to the first partition 1 on one side in the second direction X.

[0052] In one embodiment, such as Figure 5As shown, the partition assembly 2 includes a second partition 21 and a third partition 22 opposite to each other, with both ends of the first partition 1 connected to the second partition 21 and the third partition 22 respectively. The second partition 21 is connected to the first frame 301, and the third partition 22 is connected to the second frame 302. A first terminal block 4 is disposed on the second partition 21 or the third partition 22, or both the second partition 21 and the third partition 22 are provided with a first terminal block 4.

[0053] With this configuration, since both ends of the first partition 1 are connected to the second partition 21 and the third partition 22 respectively, and the extension directions of the second partition 21 and the third partition 22 both point towards the electrical cavity 101, when the first terminal block 4 is located on the second partition 21 and / or the third partition 22, after the wire harness is led out from the electrical cavity 101, it can be extended along the extension direction of the second partition 21 or the third partition 22, and the terminals on the wire harness can be plugged into the first terminal block 4, making wiring more convenient.

[0054] Specifically, the second partition 21 and the third partition 22 are spaced apart along the third direction Y, and the two ends of the first partition 1 in the third direction Y are connected to the second partition 21 and the third partition 22 respectively. The first partition 1 protrudes from the frame 3 in the first direction Z.

[0055] In one embodiment, such as Figure 5 As shown, in addition to the second partition 21 and the third partition 22, the partition assembly 2 also includes a fourth partition 23, which is at least partially disposed within the receiving cavity. The two ends of the fourth partition 23 are connected to the first frame 301 and the second frame 302, respectively. Furthermore, the two ends of the fourth partition 23 are connected to the second partition 21 and the third partition 22, respectively.

[0056] The fourth partition 23 is disposed opposite to the first partition 1, and the battery cavity is located between the first partition 1 and the fourth partition 23. A receiving space is formed between the fourth partition 23 and the inner wall of the frame 3, and the first terminal block 4 can be disposed on the fourth partition 23, located between the fourth partition 23 and the inner wall of the frame 3. This arrangement can reduce the occupancy of the first terminal block 4 in the opposite direction of the second partition 21 and the third partition 22.

[0057] Specifically, the fourth partition 23 is connected to the first frame 301 and the second frame 302 at both ends in the third direction Y, and is also connected to the second partition 21 and the third partition 22. The fourth partition 23 and the first partition 1 are spaced apart in the second direction X.

[0058] It is worth noting that, for both cases where the first terminal block 4 is located on the second partition 21 or the third partition 22 and on the fourth partition 23, when the first terminal block 4 is located on the second partition 21 or the third partition 22, wiring is easier because it is closer to the electrical cavity 101.

[0059] In one embodiment, for the second partition 21, the first frame 301 protrudes along the first direction Z on one side to form a plate shape, thereby forming the second partition 21. This configuration integrates the second partition 21 with the first frame 301, resulting in higher overall strength of the housing.

[0060] In one embodiment, for the third partition 22, the second frame 302 protrudes along the first direction Z on one side to form a plate shape, thereby forming the third partition 22. This configuration integrates the third partition 22 with the second frame 302, resulting in higher overall strength of the enclosure.

[0061] In one embodiment, such as Figures 5 to 8 As shown, the separator assembly 2 also includes a fifth separator 24. The frame 3 has opposing first end faces 31 and second end faces 32, with the first separator 1 protruding from both end faces 31 and 32. The second separator 21 is connected to the first end face 31 of the frame 3, and the fifth separator 24 is connected to the second end face 32 of the frame 3. The first battery cavity 51 is located on one side of the second separator 21, and the second battery cavity 52 is located on one side of the fifth separator 24.

[0062] The battery pack also includes a partition plate 5 and a second terminal block 8. The partition plate 5 is disposed inside the battery cavity and divides the battery cavity into a first battery cavity 51 and a second battery cavity 52. ​​Battery packs are disposed in both the first battery cavity 51 and the second battery cavity 52, and the first terminal block 4 is electrically connected to the battery pack in the first battery cavity 51.

[0063] The second terminal block 8 is disposed on the fifth partition 24 and is electrically connected to the battery pack in the second battery cavity 52.

[0064] The battery management system 13 within the electrical cavity 101 is connected to at least two wire harnesses with terminals. One wire harness's terminal is plugged into the first terminal block 4 to establish conductivity, thereby energizing the battery management system 13 and the battery pack within the first battery cavity 51. The other wire harness's terminal is plugged into the second terminal block 8 to establish conductivity, thereby energizing the battery management system 13 and the battery pack within the second battery cavity 52.

[0065] In this configuration, the first battery cavity 51 and the second battery cavity 52 are separated in the dual-layer modular battery pack. The first terminal block 4, which is electrically connected to the battery pack in the first battery cavity 51, is located on the second partition 21. The second terminal block 8, which is electrically connected to the battery pack in the second battery cavity 52, is located on the fifth partition 24.

[0066] Since the partition assembly 2, the frame 3, and the first partition 1 form a battery cavity, and the battery cavity and the electrical cavity 101 are located on opposite sides of the first partition 1, the first terminal block 4 and the second terminal block 8 are both located outside the electrical cavity 101. Therefore, the first terminal block 4 and the second terminal block 8 do not need to occupy space inside the electrical cavity 101, which facilitates the installation of other electrical components inside the electrical cavity 101.

[0067] Specifically, the first end face 31 and the second end face 32 of the frame 3 are arranged opposite each other in the first direction Z. In the first direction Z, the second partition 21 and the fifth partition 24 are located on both sides of the frame 3, respectively. In the third direction Y, the second partition 21 and the first battery cavity 51 are arranged in sequence, and the fifth partition 24 and the second battery cavity 52 are arranged in sequence.

[0068] In the case where the separator assembly 2 includes a second separator 21, a third separator 22, a fifth separator 24, and a fourth separator 23, the first frame 301, the second frame 302, the first separator 1, the second separator 21, the third separator 22, the fifth separator 24, and the fourth separator 23 surround and form a battery cavity.

[0069] The first battery cavity 51 is formed by the first frame 301, the second frame 302, the first partition 1, the second partition 21, the third partition 22, and the partition plate 5. The second battery cavity 52 is formed by the first frame 301, the second frame 302, the first partition 1, the fifth partition 24, and the partition plate 5.

[0070] In one embodiment, such as Figure 3 , Figure 4 , Figure 8 , Figure 9 and Figure 10 As shown, a recessed groove 33 is provided on the side of the frame 3 facing away from the first end face 31, and the bottom surface of the recessed groove 33 is the second end face 32. The fifth partition 24 is located in the recessed groove 33, and a receiving space is formed between the side wall of the recessed groove 33 and the fifth partition 24. The second terminal block 8 is provided on the side of the fifth partition 24 facing away from the second battery cavity 52, so as to be located between the side wall of the recessed groove 33 and the fifth partition 24.

[0071] With this configuration, the second terminal block 8 is located outside the second battery cavity 52, and the battery pack is located inside the second battery cavity 52. ​​When the second battery cavity 52 is filled with glue, the fifth partition 24 can block the glue, preventing the glue from contacting the second terminal block 8 and affecting its normal use.

[0072] In one embodiment, the first end face 31 protrudes in a plate shape in a direction away from the second end face 32 to form a second partition 21 along the first direction Z. With this arrangement, the second partition 21 is integrated with the frame 3, resulting in higher overall strength of the box.

[0073] In one embodiment, the second end face 32 protrudes in a plate shape in a direction away from the first end face 31 to form a fifth partition 24 along the first direction Z. With this arrangement, the fifth partition 24 is integrated with the frame 3, making the overall strength of the box higher.

[0074] In one embodiment, the first terminal block 4 is positioned facing the electrical cavity 101. That is, the socket of the first terminal block 4 faces the electrical cavity 101, so that the terminals on the wire harness leading out from the electrical cavity 101 can be directly inserted into the first terminal block 4 without bending the wire harness, making wiring more convenient.

[0075] In one embodiment, the second terminal block 8 is positioned facing the electrical cavity 101. That is, the socket of the second terminal block 8 faces the electrical cavity 101, so that the terminals on the wire harness leading out from the electrical cavity 101 can be directly inserted into the second terminal block 8 without bending the wire harness, making wiring more convenient.

[0076] In some embodiments, both the first terminal block 4 and the second terminal block 8 are disposed facing the electrical cavity 101.

[0077] In one embodiment, such as Figure 1 , Figure 2 , Figure 8 , Figure 9 and Figure 10 As shown, the battery pack also includes a first cover 9, which covers the first end face 31 of the frame 3, thereby surrounding the portion of the first partition 1 extending out of the first end face 31 and the second partition 21. An accommodating space is formed between the inner wall of the first cover 9 and the second partition 21. A first terminal block 4 is disposed on the side of the second partition 21 facing away from the first battery cavity 51, located between the inner wall of the first cover 9 and the second partition 21.

[0078] With this configuration, the first terminal block 4 is located outside the first battery cavity 51, and the battery pack is located inside the first battery cavity 51. When the first battery cavity 51 is filled with glue, the second partition 21 can block the glue, preventing the glue from contacting the first terminal block 4 and affecting the normal use of the first terminal block 4.

[0079] In one embodiment, such as Figure 1 and Figure 2 As shown, the battery pack includes multiple battery cells 7, which are arranged sequentially.

[0080] The battery pack also includes a first flexible circuit board 11, which is electrically connected to the first terminal block 4. The extension direction of the first flexible circuit board 11 is consistent with the arrangement direction of each battery cell 7 of the battery pack in the first battery cavity 51. Along the extension path of the first flexible circuit board 11, each battery cell 7 of the battery pack in the first battery cavity 51 is electrically connected to the first flexible circuit board 11, so that each battery cell 7 is electrically connected to the first flexible circuit board 11. The first flexible circuit board 11 is electrically connected to the first terminal block 4, thereby connecting each battery cell 7 to the first terminal block 4.

[0081] This configuration makes installation more convenient when connecting each battery cell 7 of the battery pack in the first battery cavity 51 to the first flexible circuit board 11.

[0082] In some embodiments, the first flexible circuit board 11 passes through the side of the second partition 21 away from the first end face 31 and is electrically connected to the first terminal block 4.

[0083] In a further embodiment, such as Figure 1 and Figure 2 As shown, multiple battery packs are sequentially arranged within the first battery cavity 51. The number of first terminal blocks 4 and first flexible circuit boards 11 is the same as the number of battery packs within the first battery cavity 51. The battery packs, first terminal blocks 4, and first flexible circuit boards 11 within the first battery cavity 51 are arranged in the same direction. The first flexible circuit boards 11 are electrically connected to the first terminal blocks 4 in a one-to-one correspondence, and the first flexible circuit boards 11 are electrically connected to each individual battery cell 7 of the battery packs within the first battery cavity 51 in a one-to-one correspondence.

[0084] With this configuration, for any battery pack within the first battery cavity 51, a corresponding first flexible circuit board 11 is provided, and each individual battery cell 7 of the battery pack is electrically connected to a first flexible circuit board 11. Each first flexible circuit board 11 is correspondingly connected to a first terminal block 4.

[0085] The wiring harness that is electrically connected to the battery management system 13 in the electrical cavity 101 has multiple terminals. The terminals are plugged into the first terminal block 4 one by one to conduct electricity, so that each battery pack in the first battery cavity 51 can be electrically connected to the battery management system 13 in the electrical cavity 101 through the wiring harness.

[0086] Specifically, within the first battery cavity 51, the battery packs are arranged sequentially along the second direction X. Within a single battery pack, the individual battery cells 7 are arranged sequentially along the third direction Y. Each first flexible circuit board 11 and each first terminal block 4 are arranged sequentially along the second direction X. Each first flexible circuit board 11 is arranged sequentially along the third direction Y.

[0087] In one embodiment, such as Figure 3 and Figure 4 As shown, the battery pack also includes a second cover 10, which is disposed on the side of the frame 3 opposite to the first end face 31, and the second cover 10 covers the recessed groove 33.

[0088] In one embodiment, such as Figure 3 and Figure 4 As shown, the battery pack includes multiple battery cells 7, which are arranged sequentially. The battery pack also includes a second flexible circuit board 12, which is electrically connected to a second terminal block 8. The extension direction of the second flexible circuit board 12 is consistent with the arrangement direction of the battery cells 7 in the battery pack within the second battery cavity 52. ​​Along the extension path of the second flexible circuit board 12, each battery cell 7 in the battery pack within the second battery cavity 52 is electrically connected to the second flexible circuit board 12, thereby ensuring that each battery cell 7 is electrically connected to the second flexible circuit board 12. The second flexible circuit board 12 is then electrically connected to the second terminal block 8, thereby connecting each battery cell 7 to the second terminal block 8.

[0089] This configuration makes installation more convenient when connecting each battery cell 7 of the battery pack in the second battery cavity 52 to the second flexible circuit board 12.

[0090] In some embodiments, the second flexible circuit board 12 passes through the side of the fifth partition 24 away from the second end face 32 and is electrically connected to the second terminal block 8.

[0091] In a further embodiment, multiple battery packs are sequentially arranged within the second battery cavity 52, and the number of second terminal blocks 8 and second flexible circuit boards 12 is the same as the number of battery packs within the second battery cavity 52. ​​The battery packs, second terminal blocks 8, and second flexible circuit boards 12 within the second battery cavity 52 are arranged in the same direction. Each second flexible circuit board 12 is electrically connected to a corresponding second terminal block 8, and each second flexible circuit board 12 is electrically connected to a corresponding individual battery cell 7 within the battery packs of the second battery cavity 52.

[0092] With this configuration, for any battery pack within the second battery cavity 52, a corresponding second flexible circuit board 12 is provided, and each individual battery cell 7 of the battery pack is electrically connected to a second flexible circuit board 12. Each second flexible circuit board 12 is correspondingly connected to a second terminal block 8.

[0093] The wiring harness that is electrically connected to the battery management system 13 in the electrical cavity 101 has multiple terminals. The terminals are plugged into the second terminal block 8 one by one to conduct electricity, so that each battery pack in the second battery cavity 52 can be electrically connected to the battery management system 13 in the electrical cavity 101 through the wiring harness.

[0094] Specifically, within the second battery cavity 52, the battery packs are arranged sequentially along the second direction X. Within a single battery pack, the individual battery cells 7 are arranged sequentially along the third direction Y. The second flexible circuit boards 12 and the second terminal blocks 8 are arranged sequentially along the second direction X. Each second flexible circuit board 12 is arranged sequentially along the third direction Y.

[0095] In one embodiment, the first flexible circuit board 11 and the second flexible circuit board 12 are arranged simultaneously, and the specific arrangement is the same as in the above embodiment.

[0096] In one embodiment, multiple battery packs are sequentially arranged in the first battery cavity 51, and multiple battery packs are sequentially arranged in the second battery cavity 52.

[0097] In one embodiment, such as Figure 12 , Figure 15 and Figure 17 As shown, the housing is provided with a first discharge chamber 14 and a second discharge chamber 15. The first battery chamber 51 and the second battery chamber 52 are respectively used to place battery cells 7, and the first battery chamber 51 and the second battery chamber 52 are arranged alternately, as are the first discharge chamber 14 and the second discharge chamber 15.

[0098] A first discharge hole 161 is provided between the first battery chamber 51 and the first discharge chamber 14. The first discharge hole 161 is used to allow the discharge material to pass through. That is, when the battery cell 7 in the first discharge chamber 14 undergoes thermal runaway and erupts, the ejected material can be discharged into the first discharge chamber 14 through the first discharge hole 161.

[0099] A second discharge hole 171 is provided between the second battery chamber 52 and the second discharge chamber 15. The second discharge hole 171 is used to allow the discharge material to pass through. That is, when the battery cell 7 in the second discharge chamber 15 undergoes thermal runaway, the discharge material can be discharged into the second discharge chamber 15 through the second discharge hole 171.

[0100] Each explosion-proof valve is installed on the housing, and each explosion-proof valve is connected to the first discharge chamber 14 and the second discharge chamber 15 respectively.

[0101] With this configuration, regardless of whether the battery cell 7 in the first battery chamber 51 or the second battery chamber 52 experiences thermal runaway individually, or whether the battery cell 7 in the first battery chamber 51 and the second battery chamber 52 experiences thermal runaway simultaneously, the ejected material can be ejected through at least two explosion-proof valves after entering the first discharge chamber 14 or the second discharge chamber 15. This provides more discharge paths and avoids serious damage to the battery pack due to untimely discharge of the ejected material.

[0102] In the case of a dual-layer module battery, the first battery cavity 51 and the second battery cavity 52 are arranged vertically at intervals.

[0103] At least two explosion-proof valves, including a first explosion-proof valve 18 and a second explosion-proof valve 19, are respectively installed on the housing and are connected to the first discharge chamber 14 and the second discharge chamber 15. Emissions entering the first discharge chamber 14 or the second discharge chamber 15 can be discharged through the first explosion-proof valve 18 and the second explosion-proof valve 19, respectively.

[0104] It is worth noting that more explosion-proof valves can be installed to provide more discharge paths.

[0105] In one embodiment, such as Figures 12 to 14 As shown, the housing includes a first battery bracket 16 and a second battery bracket 17, and the first battery bracket 16, the partition plate 5, and the second battery bracket 17 are arranged at intervals along the first direction Z.

[0106] In the first direction Z, a first battery cavity 51 is formed on the side of the first battery holder 16 away from the partition plate 5. A first discharge cavity 14 is formed between the partition plate 5 and the first battery holder 16. A first discharge hole 161 is provided on the first battery holder 16, so that the first battery cavity 51 communicates with the first discharge cavity 14 through the first discharge hole 161. Here, the first direction Z is the height direction of the battery pack.

[0107] Similarly, in the first direction Z, the second battery bracket 17 forms a second battery cavity 52 on the side away from the partition plate 5, and a second discharge cavity 15 is formed between the partition plate 5 and the second battery bracket 17. The second battery bracket 17 is provided with a second discharge hole 171, so that the second battery cavity 52 communicates with the second discharge cavity 15 through the second discharge hole 171.

[0108] When a battery cell 7 in the first battery cavity 51 experiences thermal runaway, the ejected material enters the first discharge cavity 14 through the first discharge port 161 and is ejected towards the partition plate 5 along the first direction Z. Since the partition plate 5 separates the first discharge cavity 14 and the second discharge cavity 15, it prevents the ejected material in the first discharge cavity 14 from entering the second discharge cavity 15. This prevents the battery cell 7 in the second battery cavity 52 from being affected by thermal runaway.

[0109] When a battery cell 7 in the second battery cavity 52 experiences thermal runaway, the ejected material enters the second discharge cavity 15 through the second discharge port 171 and is ejected towards the partition plate 5 along the first direction Z. Since the partition plate 5 separates the first discharge cavity 14 and the second discharge cavity 15, it prevents the ejected material in the second discharge cavity 15 from entering the first discharge cavity 14. This prevents the battery cell 7 in the second battery cavity 52 from affecting the battery cell 7 in the first battery cavity 51 in the event of thermal runaway.

[0110] This configuration ensures that if a battery cell 7 in one of the first battery chamber 51 or the second battery chamber 52 experiences thermal runaway, it will not affect the battery cell 7 in the other chamber.

[0111] In some embodiments, the partition 5 is configured as a fireproof board, such as by using fireproof material or by providing fireproof layers on both sides of the partition 5. This prevents high-temperature ejected materials from spraying onto the partition 5 and causing serious damage.

[0112] In one embodiment, such as Figure 13 , Figure 14 , Figure 21 and Figure 22 As shown, a first support column 162 is provided on the side of the first battery bracket 16 near the partition plate 5, and the first support column 162 abuts against the partition plate 5. Thus, the first support column 162 is located within the first discharge cavity 14, and the first support column 162 provides support between the first battery bracket 16 and the partition plate 5, enhancing the load-bearing capacity of the first battery bracket 16 and improving the overall strength and stability of the battery pack. The size of the first support column 162 should be smaller than the first discharge cavity 14 to avoid the first support column 162 completely blocking the first discharge cavity 14.

[0113] like Figure 13 , Figure 14 , Figure 17 and Figure 19 As shown, a second support column 172 is provided on the side of the second battery holder 17 near the partition plate 5, and the second support column 172 abuts against the partition plate 5. Thus, the second support column 172 is located within the second discharge cavity 15, and the second support column 172 provides support between the second battery holder 17 and the partition plate 5, enhancing the overall strength and stability of the battery pack. The size of the second support column 172 should be smaller than the second discharge cavity 15 to avoid the second support column 172 obstructing the second discharge cavity 15.

[0114] In one embodiment, the extension direction of the first pillar 162 is consistent with the extension direction of the second pillar 172, and the first pillar 162 and the second pillar 172 are aligned in the extension direction.

[0115] The partition plate 5 has a first surface and a second surface facing each other in the first direction Z. The end of the first support 162 away from the first battery holder 16 abuts against the first surface of the partition plate 5, and the end of the second support 172 away from the second battery holder 17 abuts against the second surface of the partition plate 5. Since the first support 162 and the second support 172 are aligned in the extending direction, the first support 162 and the second support 172 are located on both sides of the partition plate 5 and abut against the same position on the partition plate 5.

[0116] The first support 162 and the second support 172 abut against the partition plate 5 from opposite directions, so that the pressure of the two on the partition plate 5 is canceled out, avoiding the pressure misalignment caused by the different points of action of the two, which would cause the partition plate 5 to deform along the first direction Z.

[0117] In one embodiment, the first support column 162 is tapered. Along the first direction Z, the cross-sectional area of ​​the first support column 162 gradually decreases in the direction close to the partition plate 5. This results in a smaller overall volume of the first support column 162, reducing its impact on the space within the first discharge chamber 14 and allowing for smoother flow of the discharge within the first discharge chamber 14.

[0118] Moreover, since the area of ​​the connecting surface between the first pillar 162 and the first battery bracket 16 is relatively large, the support effect on the first battery bracket 16 is better.

[0119] In one embodiment, the second support column 172 is tapered. Along the first direction Z, the cross-sectional area of ​​the second support column 172 gradually decreases in the direction close to the partition plate 5. This results in a smaller overall volume of the second support column 172, reducing its impact on the space within the second discharge chamber 15 and allowing for smoother flow of the exhaust material within the second discharge chamber 15.

[0120] Moreover, since the area of ​​the connecting surface between the second pillar 172 and the second battery bracket 17 is relatively large, the support effect on the first battery bracket 16 is better.

[0121] In one embodiment, both the first pillar 162 and the second pillar 172 are tapered and are mirror images of each other with respect to the partition plate 5.

[0122] In some embodiments, multiple first pillars 162 are provided, and each first pillar 162 plays a supporting role between the partition plate 5 and the first battery bracket 16, resulting in better support.

[0123] The first pillars 162 are spaced apart so that the discharge material in the first discharge chamber 14 can pass between the two adjacent first pillars 162.

[0124] In some embodiments, multiple second pillars 172 are provided, and each second pillar 172 plays a supporting role between the partition plate 5 and the second battery bracket 17, resulting in better support.

[0125] The second pillars 172 are spaced apart so that the discharge material in the second discharge chamber 15 can pass between any two adjacent second pillars 172.

[0126] In one embodiment, such as Figure 15 , Figure 16 , Figure 17 , Figure 20 and Figure 24 As shown, each explosion-proof valve is respectively installed on the outer wall of the frame 3. The frame 3 has a first discharge channel 3011 and a second discharge channel 3021 spaced apart inside, and each explosion-proof valve is connected to the first discharge channel 3011 and the second discharge channel 3021 respectively. The first battery bracket 16, the partition plate 5 and the second battery bracket 17 are respectively located on the inner side of the frame 3 and are respectively connected to the inner wall of the frame 3, thereby forming a first discharge cavity 14 and a second discharge cavity 15 on the inner side of the frame 3. The frame 3, the first battery bracket 16 and the partition plate 5 enclose the first discharge cavity 14, and the frame 3, the second battery bracket 17 and the partition plate 5 enclose the second discharge cavity 15.

[0127] The inner wall of the frame 3 is provided with a first opening 3012 and a second opening 3022. The first opening 3012 is connected to the first discharge channel 3011 and to the first discharge chamber 14 and the second discharge chamber 15 respectively. Thus, the first discharge channel 3011 is connected to the first discharge chamber 14 and the second discharge chamber 15 through the first opening 3012.

[0128] The second port 3022 is connected to the second discharge channel 3021, and is also connected to the first discharge chamber 14 and the second discharge chamber 15. Thus, the second discharge channel 3021 is connected to the first discharge chamber 14 and the second discharge chamber 15 through the second port 3022.

[0129] When the battery cell 7 in the first battery chamber 51 experiences thermal runaway, the ejected material enters the first discharge chamber 14 through the first discharge hole 161, then flows through the first port 3012 to the first discharge channel 3011, and is discharged through the first explosion-proof valve 18. At the same time, it flows through the second port 3022 to the second discharge channel 3021, and is discharged through the second explosion-proof valve 19.

[0130] When the battery cell 7 in the second battery chamber 52 experiences thermal runaway, the ejected material enters the second discharge chamber 15 through the second discharge hole 171, then flows through the first port 3012 to the first discharge channel 3011, and is discharged through the first explosion-proof valve 18. At the same time, it flows through the second port 3022 to the second discharge channel 3021, and is discharged through the second explosion-proof valve 19.

[0131] In one embodiment, a protruding edge 34 is provided on the inner wall of the frame 3, and the partition plate 5 is placed on the protruding edge 34. The protruding edge 34 has a first side and a second side opposite to each other in the first direction Z.

[0132] In the first direction Z, the first opening 3012 spans both sides of the protruding edge 34. Thus, the first opening 3012 is partially located on the first side of the protruding edge 34 and communicates with the first discharge cavity 14; and partially located on the second side of the protruding edge 34 and communicates with the second discharge cavity 15. The second opening 3022 is partially located on the first side of the protruding edge 34 and communicates with the first discharge cavity 14; and partially located on the second side of the protruding edge 34 and communicates with the second discharge cavity 15.

[0133] During installation, the partition plate 5 is first placed inside the frame 3 and positioned on the first side of the protruding edge 34. Then, the first battery bracket 16 is placed inside the frame 3, so that the first support column 162 rests against the partition plate 5. At this point, a first discharge cavity 14 is formed between the first battery bracket 16 and the partition plate 5. Since the first opening 3012 is partially located on the first side of the protruding edge 34, the first opening 3012 communicates with the first discharge cavity 14. Similarly, since the second opening 3022 is partially located on the first side of the protruding edge 34, the second opening 3022 communicates with the first discharge cavity 14.

[0134] Then, the second battery holder 17 is placed inside the frame 3, so that the second support column 172 abuts against the partition plate 5. At this time, a second discharge cavity 15 is formed between the second battery holder 17 and the partition plate 5. Since the first opening 3012 is located on the second side of the protruding edge 34, the first opening 3012 communicates with the second discharge cavity 15. Also, since the second opening 3022 is located on the second side of the protruding edge 34, the second opening 3022 communicates with the second discharge cavity 15.

[0135] With this configuration, simply inserting the partition plate 5, the first battery bracket 16, and the second battery bracket 17 into the inner side of the frame 3 will allow the first port 3012 to connect with the first discharge chamber 14 and the second discharge chamber 15 respectively, and the second port 3022 to connect with the first discharge chamber 14 and the second discharge chamber 15 respectively, making installation more convenient.

[0136] In one embodiment, such as Figure 13 , Figure 14 As shown, the first discharge chamber 14 and the second discharge chamber 15 have a first side and a second side respectively in the third direction Y. Figure 17 and Figure 18 As shown, the first port 3012 is located on the first side of the first discharge chamber 14 and on the first side of the second discharge chamber 15, so that the first port 3012 is connected to the first side of the first discharge chamber 14 and the first side of the second discharge chamber 15 respectively.

[0137] like Figure 21 and Figure 23As shown, the second port 3022 is located on the second side of the first discharge chamber 14 and on the second side of the second discharge chamber 15, so that the second port 3022 is connected to the second side of the first discharge chamber 14 and the second side of the second discharge chamber 15 respectively.

[0138] In one embodiment, multiple first ports 3012 are provided, each first port 3012 being arranged along the extending direction of the first discharge channel 3011 and communicating with the first discharge channel 3011. When the exhaust material enters the first discharge chamber 14, it can enter the first discharge channel 3011 through the multiple first ports 3012. When the exhaust material enters the second discharge chamber 15, it can enter the first discharge channel 3011 through the multiple first ports 3012. This allows the exhaust material to be quickly discharged through the first discharge channel 3011.

[0139] In one embodiment, multiple second ports 3022 are provided, each second port 3022 being arranged along the extension direction of the second discharge channel 3021, and each second port 3022 communicating with the second discharge channel 3021. When the exhaust material enters the first discharge chamber 14, it can enter the second discharge channel 3021 through the multiple second ports 3022. When the exhaust material enters the second discharge chamber 15, it can enter the second discharge channel 3021 through the multiple second ports 3022. This allows the exhaust material to be quickly discharged through the second discharge channel 3021.

[0140] In one embodiment, Figure 5 , Figure 6 , Figure 9 and Figure 10 As shown, the housing also includes a first partition 1 and a fourth partition 23, which are spaced apart along the second direction X. The two ends of the first partition 1 are respectively connected to the two inner walls of the frame 3 in the third direction Y. The two ends of the fourth partition 23 are respectively connected to the two inner walls of the frame 3 in the third direction Y.

[0141] Where the second direction X is the length direction of the battery pack, and the third direction Y is the width direction of the battery pack. Alternatively, the second direction X is the width direction of the battery pack, and the third direction Y is the length direction of the battery pack.

[0142] Thus, the first partition 1, the fourth partition 23, and the frame 3 surround and form a cavity, and the first battery holder 16, the partition 5, and the partition 5 of the second battery holder 17 are all disposed within the cavity. The first partition 1, the fourth partition 23, the frame 3, the first battery holder 16, and the partition 5 together form a first discharge cavity 14, and the first partition 1, the fourth partition 23, the frame 3, the second battery holder 17, and the partition 5 together form a second discharge cavity 15.

[0143] In one embodiment, such as Figure 16 , Figure 17 , Figure 20 and Figure 21 As shown, the frame 3 includes a first frame 3, a second frame 3, and a third frame 3. The first frame 3 and the second frame 3 are spaced apart along a third direction Y. Both ends of the first partition 1 and the fourth partition 23 are respectively connected to the inner walls of the first frame 3 and the second frame 3. A first opening 3012 is provided on the inner wall of the first frame 3, and a first discharge channel 3011 is provided inside the first frame 3. A second opening 3022 is provided on the inner wall of the second frame 3, and a second discharge channel 3021 is provided inside the second frame 3. A first explosion-proof valve 18 and a second explosion-proof valve 19 are respectively provided on the outer wall of the third frame 3.

[0144] The third frame 3 is equipped with a third discharge channel and a fourth discharge channel at intervals. The first explosion-proof valve 18 is connected to the third discharge channel, and the second explosion-proof valve 19 is connected to the fourth discharge channel. The third frame 3 is provided with a third port 3031 and a fourth port 3032. The third port 3031 is connected to the third discharge channel, and the fourth port 3032 is connected to the fourth discharge channel. The third frame 3 is connected to the first frame 3 and the second frame 3 respectively, so that the first discharge channel 3011 is connected to the third port 3031, and the second discharge channel 3021 is connected to the fourth port 3032. Thus, the first discharge channel 3011, the third discharge channel and the first explosion-proof valve 18 are connected in sequence, and the second discharge channel 3021, the fourth discharge channel and the second explosion-proof valve 19 are connected in sequence.

[0145] Thus, after entering the first emission channel 3011, the emissions are discharged through the third emission channel to the first explosion-proof valve 18. After entering the second emission channel 3021, the emissions are discharged through the fourth emission channel to the second explosion-proof valve 19.

[0146] In some embodiments, the third and fourth emission channels are separated by a partition 5.

[0147] In one embodiment, such as Figure 24 As shown, the frame 3 also includes a fourth frame 3, which is spaced apart from the third frame 3 along the second direction X. The fourth frame 3 is connected to the first frame 3 and the second frame 3 respectively, so that the first frame 3, the second frame 3, the third frame 3 and the fourth frame 3 are connected and enclosed in sequence.

[0148] In one embodiment, such as Figure 16 and Figure 17 As shown, a first mounting part 163 is provided on the side of the first battery bracket 16 near the first battery cavity 51. The side of the first mounting part 163 away from the first discharge cavity 14 is used to install the battery cell 7. The first discharge hole 161 passes through the first mounting part 163 and the first battery bracket 16 along the first direction Z.

[0149] The first mounting portion 163 can be a boss. One end of the first discharge hole 161 passes through the first mounting portion 163 and is aligned with the explosion-proof valve of the battery cell 7, while the other end passes through the first battery bracket 16 to connect to the first discharge chamber 14. When the battery cell 7 in the first battery chamber 51 experiences thermal runaway, the explosion-proof valve bursts open, and the ejected material enters the first discharge chamber 14 through the first discharge hole 161.

[0150] In one embodiment, such as Figure 20 and Figure 21 As shown, a second mounting portion 173 is provided on the side of the second battery bracket 17 near the second battery cavity 52. ​​The side of the second mounting portion 173 away from the second discharge cavity 15 is used to install the battery cell 7. The second discharge hole 171 passes through the second mounting portion 173 and the second battery bracket 17 along the first direction Z.

[0151] The second mounting portion 173 can be a boss. One end of the second discharge hole 171 passes through the second mounting portion 173 and is aligned with the explosion-proof valve of the battery cell 7. The other end passes through the second battery bracket 17 to connect to the second discharge chamber 15. When the battery cell 7 in the second battery chamber 52 experiences thermal runaway, the explosion-proof valve opens, and the ejected material enters the second discharge chamber 15 through the second discharge hole 171.

[0152] In one embodiment, such as Figures 12 to 14 As shown, a first explosion-proof plate 164 is provided inside the first discharge hole 161, and the discharged material can break through the first explosion-proof plate 164 to pass through the first discharge hole 161.

[0153] Specifically, the first explosion-proof plate 164 is connected to the inner wall of the first discharge hole 161 and seals the first discharge hole 161. When the battery cell 7 in the first battery cavity 51 experiences thermal runaway, the explosion-proof valve of the battery cell 7 bursts open, and the ejected material is sprayed into the first discharge hole 161 and onto the first explosion-proof plate 164. The impact force of the ejected material can break through the first explosion-proof plate 164 and enter the first discharge cavity 14 through the first discharge hole 161.

[0154] Multiple battery cells 7 are provided in the first discharge hole 161 and the first battery cavity 51, and each battery cell 7 corresponds to one of the first discharge holes 161.

[0155] This configuration allows the first explosion-proof plate 164 to seal the first discharge port 161, and it can also be breached when a battery cell 7 erupts. For battery cells 7 that have not experienced thermal runaway within the first battery cavity 51, the first explosion-proof plate 164 in their corresponding first discharge port 161 remains intact. After the emissions enter the first discharge cavity 14, because the first explosion-proof plate 164 in the first discharge port 161 corresponding to the battery cells 7 that have not experienced thermal runaway remains intact, the emissions cannot flow back to the battery cells 7 that have not experienced thermal runaway through the first discharge port 161. This ensures that the battery cells 7 that have not experienced thermal runaway are not affected by the emissions, thus reducing losses to a certain extent.

[0156] A second explosion-proof plate 174 is provided inside the second discharge hole 171, and the discharged material can break through the second explosion-proof plate 174 to pass through the second discharge hole 171.

[0157] Specifically, the second explosion-proof plate 174 is connected to the inner wall of the second discharge hole 171 and seals the second discharge hole 171. When the battery cell 7 in the second battery cavity 52 experiences thermal runaway, the explosion-proof valve of the battery cell 7 bursts open, and the ejected material is sprayed into the second discharge hole 171 and onto the second explosion-proof plate 174. The impact force of the ejected material can break through the second explosion-proof plate 174 and enter the second discharge cavity 15 through the second discharge hole 171.

[0158] Multiple battery cells 7 are provided in the second discharge port 171 and the second battery cavity 52, and the battery cells 7 and the second discharge port 171 correspond one-to-one.

[0159] This configuration allows the second explosion-proof plate 174 to seal the second discharge port 171, and it can also be forced open by the second explosion-proof plate 174 in the corresponding second discharge port 171 when a battery cell 7 erupts. For battery cells 7 that have not experienced thermal runaway within the second battery cavity 52, the second explosion-proof plate 174 in their corresponding second discharge port 171 remains intact. After the emitted material enters the second discharge cavity 15, because the second explosion-proof plate 174 in the second discharge port 171 corresponding to the battery cells 7 that have not experienced thermal runaway remains intact, the emitted material cannot flow back to the battery cells 7 that have not experienced thermal runaway through the second discharge port 171, thus ensuring that the battery cells 7 that have not experienced thermal runaway are not affected by the emitted material, and reducing losses to a certain extent.

[0160] In one embodiment, such as Figure 12 As shown, the box also includes a side beam 20, which is connected to the outer wall of the frame 3 and is used to connect to the mounting point.

[0161] During installation, the side beam 20 can be erected at the installation site and connected to the installation site, thereby connecting the battery pack to the installation site.

[0162] Two side beams 20 can be set, and they are located on opposite sides of the frame 3 in the third direction Y.

[0163] Multiple mounting holes are provided on the side beam 20, through which fasteners such as bolts, screws or rivets can be inserted.

[0164] In one embodiment, such as Figure 5 and Figure 6 As shown, the battery pack also includes a terminal block 6. Figure 11 As shown, the terminal block 6 includes a first power connection section 61, a connecting section 62, and a second power connection section 63 connected in sequence. The first power connection section 61, the connecting section 62, and the second power connection section 63 are electrically connected in sequence. The first power connection section 61 is electrically connected to the battery pack in the first battery cavity 51, and the second power connection section 63 is electrically connected to the battery pack in the second battery cavity 52. ​​Thus, the battery pack in the first battery cavity 51 is electrically connected to the battery pack in the second battery cavity 52 through the terminal block 6, so as to realize the series or parallel connection of the battery pack in the first battery cavity 51 and the battery pack in the second battery cavity 52.

[0165] During installation, the first connecting segment 61 is first energized and connected to the battery pack in the first battery cavity 51, and then the second connecting segment 63 is energized and connected to the battery pack in the second battery cavity 52. ​​Since the connecting segment 62 is a flexible component, it can deform arbitrarily. After the first connecting segment 61 is energized and connected to the battery pack in the first battery cavity 51, although the first connecting segment 61 cannot move, the deformation of the connecting segment 62 allows the second connecting segment 63 to move freely, facilitating the energization and connection of the second connecting segment 63 to the battery pack in the second battery cavity 52. ​​This avoids inaccurate connection between the second connecting segment 63 and the battery pack in the second battery cavity 52 due to manufacturing or installation errors.

[0166] In one embodiment, the battery pack has a first direction Z, a second direction X, and a third direction Y that are mutually perpendicular. The height direction of the battery pack is the first direction Z, the length direction is the second direction X, and the width direction is the third direction Y. The battery pack includes a frame 3, a first partition 1, a partition assembly 2, a separator 5, a battery pack, a first cover 9, a second cover 10, a first terminal block 4, a second terminal block 8, a first flexible circuit board 11, and a second flexible circuit board 12.

[0167] The frame 3 includes a first frame 301, a second frame 302, a third frame 303, and a fourth frame 304. The first frame 301, the second frame 302, the third frame 303, and the fourth frame 304 are connected and enclose a receiving cavity. The first frame 301 and the second frame 302 are opposite each other along the third direction Y, and the third frame 303 and the fourth frame 304 are opposite each other along the second direction X.

[0168] The frame 3 has a first end face 31 and a second end face 32 opposite to each other in the first direction Z. The first partition 1 passes through the receiving cavity and extends out of the first end face 31 and the second end face 32 respectively in the first direction Z.

[0169] The partition assembly 2 includes a second partition 21, a third partition 22, a fifth partition 24, and a fourth partition 23. The second partition 21 and the third partition 22 are spaced apart in the third direction Y, while the first partition 21 and the fourth partition 23 are spaced apart in the second direction X. The second partition 21 is connected to the first end face 31 of the first frame 301, and the third partition 22 is connected to the first end face 31 of the second frame 302. The fifth partition 24 is connected to the second end face 32, and the fourth partition 23 passes through the receiving cavity and extends out from the first end face 31 and the second end face 32 along the first direction Z, respectively.

[0170] A recessed groove 33 is provided on the side of the frame 3 facing away from the first end face 31, and the bottom surface of the recessed groove 33 is the second end face 32. The fifth partition 24 is located in the recessed groove 33, and a receiving space is formed between the side wall of the recessed groove 33 and the fifth partition 24. The second terminal block 8 is provided on the side of the fifth partition 24 facing away from the second battery cavity 52, so as to be located between the side wall of the recessed groove 33 and the fifth partition 24.

[0171] The first partition 1 and the fourth partition 23 are connected at both ends in the third direction Y to the first frame 301 and the second frame 302, respectively, and are also connected to the second partition 21 and the third partition 22, respectively. Thus, the first frame 301, the second frame 302, the first partition 1, the second partition 21, the third partition 22, the fifth partition 24, and the fourth partition 23 enclose and form a battery cavity.

[0172] A partition plate 5 is disposed in the receiving cavity and connects the first frame 301, the first partition 1, the second frame 302, and the fourth partition 23, thereby dividing the battery cavity into a first battery cavity 51 and a second battery cavity 52. ​​In the first direction Z, the first battery cavity 51 and the second battery cavity 52 are located on both sides of the partition plate 5.

[0173] The first cover 9 is placed on the first end face 31 of the frame 3, and the inner wall of the first cover 9 and the second partition 21 are spaced apart in the third direction Y.

[0174] A battery pack is disposed inside the first battery cavity 51. The first terminal block 4 is disposed on the side of the second partition 21 away from the first battery cavity 51. The first flexible circuit board 11 passes through the side of the second partition 21 away from the first end face 31. The portion of the first flexible circuit board 11 located inside the first battery cavity 51 is electrically connected to the battery pack inside the first battery cavity 51, and the portion of the first flexible circuit board 11 located on the inner wall of the first cover 9 and between the second partition 21 is electrically connected to the first terminal block 4.

[0175] A recessed groove 33 is provided on the side of the frame 3 away from the first end face 31. The bottom of the recessed groove 33 is the second end face 32. The fifth partition 24 is connected to the second end face 32. The fifth partition 24, the frame 3, the first partition 1, the fourth partition 23, and the partition plate 5 together form the second battery cavity 52. ​​The second cover 10 is placed on the side of the frame 3 away from the first end face 31 and seals the recessed groove 33.

[0176] A battery pack is disposed within the second battery cavity 52. ​​The second terminal block 8 is disposed on the side of the fifth partition 24 away from the second battery cavity 52. ​​The second flexible circuit board 12 passes through the side of the fifth partition 24 away from the second end face 32. The portion of the second flexible circuit board 12 located within the second battery cavity 52 is electrically connected to the battery pack within the second battery cavity 52. ​​The portion of the second flexible circuit board 12 located between the side wall of the recessed groove 33 and the fifth partition 24 is electrically connected to the second terminal block 8.

[0177] According to an embodiment of this application, another aspect provides an electrical device including any of the aforementioned battery packs. The technical effects of this electrical device are the same as those of the battery pack, and therefore will not be described in detail. The electrical device can be a vehicle, a ship, or similar device.

[0178] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A battery pack, characterized in that, include: The enclosure contains an electrical cavity (101) and a battery cavity. A battery management system (13) is disposed within the electrical cavity (101); The battery pack is disposed within the battery cavity; The first terminal block (4) is disposed inside the housing and is electrically connected to the battery pack. The first terminal block (4) is located outside the electrical cavity (101) and is electrically connected to the battery management system (13).

2. The battery pack according to claim 1, characterized in that, The enclosure includes: The frame (3) is provided with a receiving cavity, and the frame (3) includes a first sidewall (301) and a second sidewall (302) opposite each other. The first partition (1) is at least partially disposed in the receiving cavity. The two ends of the first partition (1) are respectively connected to the first frame (301) and the second frame (302). One side of the first partition (1) is surrounded by the frame (3) to form the electrical cavity (101). A separator assembly (2) is connected to the frame (3), and the other side of the first separator (1) surrounds the frame (3) and the separator assembly (2) to form the battery cavity; The first terminal block (4) is disposed on the partition assembly (2).

3. The battery pack according to claim 2, characterized in that, The partition assembly (2) includes a second partition (21) and a third partition (22) opposite to each other. The two ends of the first partition (1) are respectively connected to the second partition (21) and the third partition (22). The second partition (21) is connected to the first frame (301), and the third partition (22) is connected to the second frame (302). The first terminal block (4) is disposed on the second partition (21) and / or the third partition (22).

4. The battery pack according to claim 3, characterized in that, The separator assembly (2) further includes a fourth separator (23), which is at least partially disposed within the receiving cavity. The two ends of the fourth separator (23) are connected to the first frame (301) and the second frame (302) respectively, and are connected to the second separator (21) and the third separator (22) respectively. The battery cavity is located between the first separator (1) and the fourth separator (23).

5. The battery pack according to claim 3, characterized in that, The surface protrusion of the first frame (301) forms the second partition (21); And / or, the surface protrusions of the second frame (302) form the third partition (22).

6. The battery pack according to claim 3, characterized in that, The separator assembly (2) further includes a fifth separator (24), the frame (3) has opposing first end faces (31) and second end faces (32), the second separator (21) is connected to the first end face (31), the fifth separator (24) is connected to the second end face (32), and the battery pack further includes: A partition plate (5) is disposed in the battery cavity and divides the battery cavity into a first battery cavity (51) and a second battery cavity (52). The battery pack is disposed in both the first battery cavity (51) and the second battery cavity (52). The first terminal block (4) is electrically connected to the battery pack in the first battery cavity (51). The second terminal block (8) is disposed on the fifth partition (24) and is electrically connected to the battery pack in the second battery cavity (52).

7. The battery pack according to claim 6, characterized in that, A sinking groove (33) is provided on the side of the frame (3) away from the first end face (31). The bottom surface of the sinking groove (33) is the second end face (32). The fifth partition (24) is located in the sinking groove (33). The second terminal block (8) is located between the side wall of the sinking groove (33) and the fifth partition (24).

8. The battery pack according to claim 6, characterized in that, The second end face (32) protrudes in a direction away from the first end face (31) to form the fifth partition (24).

9. The battery pack according to claim 6, characterized in that, The first terminal block (4) and / or the second terminal block (8) are disposed toward the electrical cavity (101).

10. The battery pack according to claim 6, characterized in that, It also includes a first cover (9), which covers the first end face (31), and the first terminal block (4) is located between the inner wall of the first cover (9) and the second partition (21) and / or the third partition (22).

11. The battery pack according to claim 6, characterized in that, The battery pack includes a plurality of battery cells (7) arranged sequentially, and the battery pack also includes: The first flexible circuit board (11) is electrically connected to the first terminal block (4). The extension direction of the first flexible circuit board (11) is consistent with the arrangement direction of each battery cell (7) of the battery pack in the first battery cavity (51). Each battery cell (7) of the battery pack in the first battery cavity (51) is electrically connected to the first flexible circuit board (11).

12. The battery pack according to claim 11, characterized in that, Multiple battery packs are arranged sequentially in the first battery cavity (51). The number of the first terminal block (4) and the first flexible circuit board (11) is the same as the number of battery packs in the first battery cavity (51). The arrangement directions of each battery pack, each first terminal block (4) and each first flexible circuit board (11) in the first battery cavity (51) are the same. The first flexible circuit board (11) is electrically connected to the first terminal block (4) in a one-to-one correspondence. The first flexible circuit board (11) is electrically connected to each battery cell (7) of the battery pack in the first battery cavity (51) in a one-to-one correspondence.

13. The battery pack according to claim 6, characterized in that, The battery pack includes a plurality of battery cells (7) arranged sequentially, and the battery pack also includes: The second flexible circuit board (12) is electrically connected to the second terminal block (8). The extension direction of the second flexible circuit board (12) is consistent with the arrangement direction of each battery cell (7) of the battery pack in the second battery cavity (52). Each battery cell (7) of the battery pack in the second battery cavity (52) is electrically connected to the second flexible circuit board (12).

14. The battery pack according to claim 13, characterized in that, Multiple battery packs are arranged sequentially in the second battery cavity (52). The number of second terminal blocks (8) and second flexible circuit boards (12) is the same as the number of battery packs in the second battery cavity (52). The arrangement directions of each battery pack, each second terminal block (8) and each second flexible circuit board (12) in the second battery cavity (52) are the same. The second flexible circuit board (12) is electrically connected to the second terminal block (8) in a one-to-one correspondence. The second flexible circuit board (12) is electrically connected to each battery cell (7) of the battery pack in the second battery cavity (52) in a one-to-one correspondence.

15. The battery pack according to claim 6, characterized in that, The housing is provided with a first discharge chamber (14) and a second discharge chamber (15). A first discharge hole (161) for the passage of effluent is provided between the first battery chamber (51) and the first discharge chamber (14). A second discharge hole (171) for the passage of effluent is provided between the second battery chamber (52) and the second discharge chamber (15). The battery pack also includes: At least two explosion-proof valves are installed on the housing, and each explosion-proof valve is connected to the first discharge chamber (14) and the second discharge chamber (15) respectively.

16. The battery pack according to claim 15, characterized in that, The housing also includes a first battery bracket (16) and a second battery bracket (17). The first battery bracket (16), the partition plate (5), and the second battery bracket (17) are arranged at intervals along a first direction (Z), which is the height direction of the battery pack. The partition plate (5) and the first battery bracket (16) form the first discharge cavity (14), and the partition plate (5) and the second battery bracket (17) form the second discharge cavity (15). The first battery cavity (51) is located on the side of the first battery bracket (16) away from the partition plate (5), and the first battery bracket (16) is provided with the first discharge hole (161). The second battery cavity (52) is located on the side of the second battery bracket (17) away from the partition plate (5), and the second battery bracket (17) is provided with the second discharge hole (171).

17. The battery pack according to claim 16, characterized in that, The first battery bracket (16) is provided with a first support column (162) on the side near the partition plate (5), and the first support column (162) abuts against the partition plate (5); The second battery holder (17) is provided with a second support (172) on the side near the partition plate (5), and the second support (172) abuts against the partition plate (5).

18. The battery pack according to claim 17, characterized in that, The first support (162) and the second support (172) are aligned in the extending direction and abut against opposite sides of the partition plate (5).

19. The battery pack according to claim 17, characterized in that, The first support (162) is tapered, and the cross-sectional area of ​​the first support (162) gradually decreases in the direction close to the partition plate (5); And / or, the second pillar (172) is configured to be tapered, and the cross-sectional area of ​​the second pillar (172) gradually decreases in the direction close to the partition plate (5).

20. The battery pack according to claim 17, characterized in that, Multiple first pillars (162) are provided, with adjacent first pillars (162) spaced apart; And / or, multiple second pillars (172) are provided, with adjacent second pillars (172) spaced apart.

21. The battery pack according to claim 17, characterized in that, Each of the explosion-proof valves is respectively disposed on the outer wall of the frame (3). The frame (3) is provided with a first discharge channel (3011) and a second discharge channel (3021) at intervals. The first discharge chamber (14) and the second discharge chamber (15) are located on the inner side of the frame (3). The first battery bracket (16), the partition plate (5) and the second battery bracket (17) are respectively connected to the inner wall of the frame (3). The inner wall of the frame (3) is provided with a first opening (3012) and a second opening (3022). The first discharge channel (3011) is connected to the first discharge chamber (14) and the second discharge chamber (15) through the first opening (3012). The second discharge channel (3021) is connected to the first discharge chamber (14) and the second discharge chamber (15) through the second opening (3022).

22. The battery pack according to claim 21, characterized in that, The inner wall of the frame (3) is provided with a protruding edge (34), and the partition plate (5) is placed on the protruding edge (34). The protruding edge (34) has a first side and a second side opposite to each other in the first direction (Z). The first opening (3012) is located on the first side of the protruding edge (34) and communicates with the first discharge cavity (14); the first opening (3012) is located on the second side of the protruding edge (34) and communicates with the second discharge cavity (15). And / or, the second port (3022) is located on the first side of the protrusion (34) and communicates with the first discharge cavity (14), and the second port (3022) is located on the second side of the protrusion (34) and communicates with the second discharge cavity (15).

23. The battery pack according to claim 21, characterized in that, The first port (3012) and the second port (3022) are located on both sides of the first discharge chamber (14) and the second discharge chamber (15) in the third direction (Y), respectively.

24. The battery pack according to claim 21, characterized in that, The first outlet (3012) has multiple openings along the extension direction of the first discharge channel (3011); And / or, the second port (3022) is provided with a plurality of ports along the extension direction of the second discharge channel (3021).

25. The battery pack according to claim 16, characterized in that, The first battery bracket (16) has a first mounting part (163) on the side near the first battery cavity (51). The first mounting part (163) is used to mount the battery cell (7). The first discharge hole (161) passes through the first mounting part (163) and the first battery bracket (16). The second battery bracket (17) has a second mounting part (173) on the side near the second battery cavity (52). The second mounting part (173) is used to mount the battery cell (7). The second discharge hole (171) passes through the second mounting part (173) and the second battery bracket (17).

26. The battery pack according to claim 25, characterized in that, The first discharge hole (161) is provided with a first explosion-proof plate (164), and the discharged material can break through the first explosion-proof plate (164). And / or, a second explosion-proof plate (174) is provided inside the second discharge port (171), and the discharged material can break through the second explosion-proof plate (174).

27. The battery pack according to claim 15, characterized in that, The box also includes a side beam (20), which is connected to the outer wall of the frame (3) and is used to connect to the mounting point.

28. The battery pack according to any one of claims 6-27, characterized in that, Also includes: The terminal block (6) includes a first power connection section (61), a connecting section (62), and a second power connection section (63) connected and electrically conductive in sequence. The first power connection section (61) is electrically connected to the battery pack in the first battery cavity (51), and the second power connection section (63) is electrically connected to the battery pack in the second battery cavity (52). The connecting section (62) is configured as a flexible component.

29. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1-28.

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