Battery packs and electrical equipment

Abstract

This utility model relates to the field of battery technology, providing a battery pack and an electrical device. The battery pack includes a battery box and a bracket. The battery box has a mounting groove near its opening. A positioning part is provided within the mounting groove. The bracket is disposed within the mounting groove. The bracket has a connecting part protruding along a first direction. The connecting part connects to the positioning part. This prevents the bracket from being installed backwards or from shifting its installation position.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery pack and electrical equipment. Background Technology

[0002] In related technologies, new energy vehicles are typically equipped with a power supply and a low-voltage starting power supply. The low-voltage starting power supply includes a battery box and a CCS (Cell Connection System) plastic bracket, circuit board, battery module, and other structures housed within the battery box. Currently, the CCS plastic bracket is directly fixed to the battery box without a positioning structure, which can easily lead to the CCS plastic bracket being installed backwards or misaligned, affecting the assembly efficiency and accuracy of the CCS plastic bracket. Utility Model Content

[0003] The present invention provides a battery pack and electrical equipment that enables rapid positioning and installation of the bracket and battery box, thereby at least partially solving the above-mentioned technical problems.

[0004] In a first aspect, embodiments of the present invention provide a battery pack, comprising:

[0005] The battery box has a mounting groove near the opening, and a positioning part is provided in the mounting groove;

[0006] A bracket is disposed in the mounting groove. The bracket has a connecting part protruding along a first direction, and the connecting part is connected to the positioning part.

[0007] This prevents the bracket from being installed backwards or from shifting its installation position.

[0008] In one embodiment, one of the connecting portion and the positioning portion includes a positioning post, and the other is configured with a positioning hole, wherein the positioning post is engaged in the positioning hole.

[0009] This prevents the bracket from shifting in its installation position.

[0010] In one embodiment, at least two connecting portions are provided and are diagonally distributed on the bracket, and the positioning portion is adapted to the connecting portion.

[0011] This ensures reliable positioning of the support.

[0012] In one embodiment, the battery pack further includes a battery module disposed within the battery box. The battery module includes at least two individual battery cells spaced apart along a second direction, with an insulating member between each pair of adjacent individual battery cells. The second direction is angularly positioned relative to the first direction.

[0013] This is to prevent two adjacent individual battery cells from being squeezed together, which could cause safety hazards.

[0014] In one embodiment, the isolator is configured as an annular shape and is located outside the expansion region of the individual battery cell.

[0015] This allows for expansion space to be reserved between two adjacent individual cells to accommodate the expansion of the individual cells.

[0016] In one embodiment, the battery module further includes a fixing member, which is disposed around at least two of the individual battery cells. The fixing member is connected to a first flexible member on at least one side in the second direction. The first flexible member abuts against the inner wall of the battery box, or the first flexible member is spaced apart from the inner wall of the battery box.

[0017] This allows the battery modules located at the edge to form a flexible contact with the inner wall of the battery box, and reserves expansion space for the outermost individual cells so that the outermost individual cells can expand towards the inner wall of the battery box.

[0018] In one embodiment, the battery module further includes a second flexible member, which is disposed around at least two of the individual battery cells. The second flexible member is offset from the fixing member and is disposed relative to the fixing member near the top cover assembly of the individual battery cell.

[0019] This allows the battery modules located at the edge to form a flexible contact with the inner wall of the battery box, preventing damage to individual cells caused by external impacts to the battery box.

[0020] In one embodiment, the second flexible member abuts against the inner wall of the battery box, and defines an adhesive guide groove in the area between the second flexible member and the opening of the battery box. The adhesive guide groove is provided with a first adhesive layer, which is configured to bond the battery module and the battery box.

[0021] This achieves a reliable bond between the battery module and the battery box.

[0022] In one embodiment, the inner wall surface of at least one side of the battery box includes an inclined section facing the opening of the battery box, wherein at least a portion of the inclined section serves as the groove wall surface of the adhesive guide groove.

[0023] This increases the thickness of the first adhesive layer, thereby improving the bonding effect and ensuring a reliable bond between the battery module and the battery box.

[0024] In one embodiment, the bracket is provided with an aluminum busbar, which is welded to the individual battery cell.

[0025] This enables electrical connection between multiple individual battery cells.

[0026] In one embodiment, the battery box includes a first box and a second box, the first box and the second box are connected, and the battery module and the bracket are both disposed in the first box.

[0027] This makes it easy to integrate battery modules, brackets, circuit boards, and other structures into the battery box.

[0028] In one embodiment, a circuit board is provided inside the first or second housing, and the circuit board is electrically connected to the battery module. The second housing is integrally formed with a terminal post, which is electrically connected to the circuit board and is configured to provide external power.

[0029] This enables the battery pack to provide external power.

[0030] In one embodiment, the pole is integrally injection molded into the second housing, and the outer surface of the pole is attached to the second housing.

[0031] This reduces the risk of gas leakage from the electrode.

[0032] In one embodiment, an electrical connector is electrically connected to the circuit board, the electrical connector being configured to connect to an external connector, wherein the electrical connector is fixed to a connector seat, the connector seat being integrally formed with the second housing.

[0033] This reduces the difficulty of fixing electrical connectors.

[0034] Secondly, embodiments of this utility model provide an electrical device, including the battery pack as described above.

[0035] The beneficial effects of the embodiments of this utility model are as follows:

[0036] In embodiments of this invention, a positioning part is provided in the mounting slot of the battery box, and a connecting part is provided on the bracket. The connecting part and the positioning part form a positioning connection, thereby ensuring the rapid positioning and installation of the bracket. This prevents the bracket from being installed backwards or from shifting its installation position. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1This is a schematic diagram of the battery pack provided in an embodiment of the present invention;

[0039] Figure 2 This is one of the cross-sectional views of the battery pack provided in the embodiments of this utility model;

[0040] Figure 3 This is a second cross-sectional view of the battery pack provided in an embodiment of this utility model;

[0041] Figure 4 This is one of the structural schematic diagrams of the first box body provided in the embodiment of this utility model;

[0042] Figure 5 This is a second structural schematic diagram of the first box provided in an embodiment of this utility model;

[0043] Figure 6 This is a schematic diagram of the structure of the battery module provided in an embodiment of this utility model;

[0044] Figure 7 This is an exploded view of the battery module provided in an embodiment of this utility model.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Battery box; 11. Mounting slot; 12. Positioning part; 13. Inclined section; 14. First box body; 15. Second box body; 16. Electrical connector; 17. Connecting seat; 18. Reinforcing rib; 19. Mounting seat;

[0047] 2. Bracket; 21. Connecting part; 22. Positioning hole; 23. Aluminum busbar;

[0048] 3. Battery module; 31. Individual battery cell; 32. Separator; 33. Fixing component; 34. First flexible component; 35. Second flexible component; 36. Adhesive guide groove; 37. First adhesive layer; 38. Second adhesive layer;

[0049] 4. Circuit board;

[0050] 5. Pole post. Detailed Implementation

[0051] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0052] like Figures 1 to 7 As shown, this application embodiment provides a battery pack. The battery pack includes a battery case 1 and a bracket 2. The battery case 1 has a mounting groove 11 formed near the opening. A positioning part 12 is provided in the mounting groove 11. The bracket 2 is disposed in the mounting groove 11. The bracket 2 has a connecting part 21 protruding along a first direction. The connecting part 21 is connected to the positioning part 12.

[0053] In this embodiment, a positioning part 12 is provided in the mounting slot 11 of the battery box 1, and a connecting part 21 is provided on the bracket 2. The connecting part 21 and the positioning part 12 form a positioning connection, thereby ensuring the quick positioning and installation of the bracket 2. This prevents the bracket 2 from being installed backwards or from being misaligned.

[0054] It is understood that the battery box 1 has a storage slot for storing the battery module 3 and a mounting slot 11 for mounting the bracket 2. The mounting slot 11 is located near the opening of the battery box 1 relative to the storage slot. The dimensions of the mounting slot 11 are larger than those of the storage slot. Specifically, the width of the mounting slot 11 is greater than the width of the storage slot, and / or the length of the mounting slot 11 is greater than the length of the storage slot. This makes the mounting slot 11 a stepped slot structure, thereby preventing the bracket 2 from encroaching into the storage slot and interfering with the battery module 3.

[0055] In some embodiments, the bracket 2 is a CCS plastic bracket.

[0056] In some embodiments, the first direction is the length direction of the battery box 1.

[0057] like Figure 4 and Figure 5 As shown, in some embodiments, one of the connecting portion 21 and the positioning portion 12 includes a positioning post, and the other is configured with a positioning hole 22. The positioning post is engaged within the positioning hole 22.

[0058] It is understandable that by cooperating with the positioning pin and the positioning hole 22, the bracket 2 can be quickly positioned and assembled, and the installation position of the bracket 2 can be prevented from shifting.

[0059] In some embodiments, the connecting part 21 is configured as a positioning post, and the positioning part 12 is provided with a positioning hole 22.

[0060] In some embodiments, the connecting part 21 is provided with a positioning hole 22, and the positioning part 12 is configured as a positioning post.

[0061] like Figure 4 As shown, in some embodiments, at least two connecting portions 21 are provided, and they are diagonally distributed on the bracket 2. The positioning portion 12 is adapted to the connecting portion 21.

[0062] It is understandable that by providing multiple connecting parts 21 and a corresponding number of positioning parts 12, the bracket 2 and the battery box 1 have multiple positioning connection points, ensuring the reliable positioning of the bracket 2. Furthermore, the multiple connecting parts 21 are arranged diagonally on the bracket 2 to better prevent the mounting position of the bracket 2 from shifting.

[0063] For example, there are two connecting parts 21, which are respectively located at opposite corners of the bracket 2.

[0064] For example, three connecting parts 21 are provided, with two connecting parts 21 located at the first corner of the bracket 2 and the other connecting part 21 located at the third corner of the bracket 2, so that the three connecting parts 21 are diagonally distributed. At the same time, since there are two connecting parts 21 at the first corner and only one connecting part 21 at the third corner, this arrangement can also play a foolproof role in preventing the bracket 2 from being installed backwards.

[0065] like Figure 6 As shown, in some embodiments, the battery pack further includes a battery module 3. The battery module 3 is disposed within the battery case 1. The battery module 3 includes at least two individual battery cells 31 spaced apart along a second direction. A spacer 32 is provided between each pair of adjacent individual battery cells 31. The second direction is angled relative to the first direction.

[0066] It is understandable that by isolating multiple individual cells 31 in the battery module 3 with spacers 32, expansion space is provided between each pair of adjacent individual cells 31. When an individual cell 31 is cycle-charged, its large surface will expand outward. At this time, the expansion space reserved by the spacers 32 can accommodate the expansion area of ​​the individual cell 31, preventing adjacent individual cells 31 from being squeezed and causing safety hazards.

[0067] In some embodiments, at least two individual battery cells 31 are stacked sequentially along their thickness direction, and the battery pack 1 is installed horizontally on the electrical device. This horizontal installation saves space in the height direction, meeting the design requirements of battery packs with limited space in the Z-direction.

[0068] In some embodiments, four individual battery cells 31 are provided, and the four individual battery cells 31 are stacked sequentially along their thickness direction so that the large surfaces of each individual battery cell 31 are arranged opposite each other. An expansion space is formed between the large surfaces of each two adjacent individual battery cells 31 by means of a spacer 32 to prevent the two adjacent individual battery cells 31 from being squeezed and causing safety hazards.

[0069] In some embodiments, the second direction is set at an acute angle to the first direction, or at an obtuse angle to the first direction, or perpendicular to the first direction. For example, the first direction is the length direction of the battery box 1, and the second direction is the thickness direction of the battery box 1.

[0070] In some embodiments, the spacer 32 may be made of materials such as polyethylene, polypropylene, polyurethane, or foam.

[0071] like Figure 7 As shown, in some embodiments, the separator 32 is configured as an annular shape and is located outside the expansion region of the individual cell 31.

[0072] Understandably, the large surface of a single battery cell 31 has an expansion area, which will bulge outward after repeated charging and discharging. Since the separator 32 is positioned around the expansion area, expansion space can be reserved between adjacent single battery cells 31 to accommodate their expansion. Furthermore, by making the separator 32 annular, it also prevents adhesive from intruding into the expansion areas of adjacent single battery cells 31 and interfering with their expansion.

[0073] In some embodiments, the separator 32 may be fixed between two adjacent individual cells 31 by adhesive bonding.

[0074] It should be noted that the individual battery cell 31 has a winding core inside, and the location of the winding core is the expansion area of ​​the individual battery cell 31.

[0075] like Figure 7 As shown, in some embodiments, the battery module 3 further includes a retainer 33. The retainer 33 is disposed around at least two individual battery cells 31.

[0076] It is understood that by attaching the fastener 33 around the outside of at least two individual cells 31, the at least two individual cells 31 are integrated to facilitate the installation of the battery module 3 into the battery box 1.

[0077] In some embodiments, the fastener 33 is a wrapping tape.

[0078] like Figure 7 As shown, in some embodiments, the fastener 33 is connected to a first flexible member 34 on at least one side in the second direction. The first flexible member 34 abuts against the inner wall surface of the battery box 1. Alternatively, the first flexible member 34 is spaced apart from the inner wall surface of the battery box 1.

[0079] It is understandable that by providing a first flexible member 34 outside the fixing member 33, the battery module 3 located at the edge can form a flexible contact with the inner wall of the battery box 1, preventing damage to the individual battery cells 31 caused by external impacts to the battery box 1. At the same time, expansion space can be reserved for the outermost individual battery cells 31, so that the outermost individual battery cells 31 can expand towards the inner wall of the battery box 1.

[0080] In some embodiments, the first flexible element 34 is foam. The foam may correspond to the expansion region of a single battery cell 31.

[0081] In some embodiments, the fastener 33 is provided with a first flexible member 34 on one side of the second direction.

[0082] In some embodiments, the fastener 33 is provided with a first flexible member 34 on both opposite sides in the second direction.

[0083] In some embodiments, the first flexible member 34 abuts against the inner wall surface of the battery box 1, thereby enabling the battery module 3 located at the edge to form flexible contact with the inner wall surface of the battery box 1, preventing damage to the individual battery cells 31 caused by external impacts to the battery box 1. At the same time, when the outermost individual battery cell 31 expands, the expansion of the individual battery cell 31 can compress the first flexible member 34, thereby giving the individual battery cell 31 expansion space.

[0084] In some embodiments, the first flexible member 34 is spaced apart from the inner wall surface of the battery box 1, thereby providing expansion space for the outermost single cell 31 so that the outermost single cell 31 can expand toward the inner wall surface of the battery box 1.

[0085] like Figure 7 As shown, in some embodiments, the battery module 3 further includes a second flexible member 35. The second flexible member 35 is disposed around at least two individual battery cells 31. The second flexible member 35 is offset from the fixing member 33, and the second flexible member 35 is disposed relative to the fixing member 33 near the top cover assembly of the individual battery cell 31.

[0086] Understandably, the battery module 3 also abuts against the inner wall of the battery box 1 via the second flexible member 35. This allows the battery module 3, located at the edge, to form a flexible contact with the inner wall of the battery box 1, preventing damage to individual battery cells 31 caused by external impacts to the battery box 1. Because the second flexible member 35 and the fixing member 33 are misaligned, the second flexible member 35 and the first flexible member 34 can achieve flexible contact at different positions.

[0087] The second flexible member 35 is positioned relative to the fixing member 33 near the top cover assembly of the single cell 31. When the second flexible member 35 abuts against the inner wall of the battery box 1, the upper region and the lower region of the second flexible member 35 can be isolated by the second flexible member 35. When the upper region is injected with glue, it will not invade the space of the lower region.

[0088] In some embodiments, the second flexible element 35 is foam.

[0089] like Figure 2 and Figure 5 As shown, in some embodiments, the second flexible member 35 abuts against the inner wall surface of the battery box 1, and defines an adhesive guide groove 36 in the area between the second flexible member 35 and the opening of the battery box 1. A first adhesive layer 37 is provided in the adhesive guide groove 36. The first adhesive layer 37 is configured to bond the battery module 3 and the battery box 1.

[0090] Understandably, the second flexible component 35 engages with the inner wall of the battery box 1 to define the adhesive guide groove 36 inside the battery box 1. After structural adhesive is injected into the battery box 1, the structural adhesive can be contained within the adhesive guide groove 36 and, after curing, form the first adhesive layer 37, thereby achieving a reliable bond between the battery module 3 and the battery box 1.

[0091] like Figure 5 As shown, in some embodiments, the inner wall surface of at least one side of the battery box 1 includes an inclined section 13. The inclined section 13 faces the opening of the battery box 1. At least a portion of the inclined section 13 serves as the groove wall surface of the adhesive guide groove 36.

[0092] It is understandable that the inclined section 13 is set to guide the structural adhesive, and the thickness of the first adhesive layer 37 can be increased at the position of the inclined section 13, thereby improving the bonding effect and ensuring reliable bonding between the battery module 3 and the battery box 1.

[0093] In some embodiments, the inner wall surfaces on opposite sides of the battery box 1 each include inclined sections 13.

[0094] like Figure 2 and Figure 3As shown, in some embodiments, the side of the battery module 3 away from the bracket 2 is bonded to the bottom surface of the battery box 1 by a second adhesive layer 38.

[0095] It is understandable that one end of the battery module 3 is bonded to the inner wall of the battery box 1 through the first adhesive layer 37, and the other end is bonded to the bottom of the battery box 1 through the second adhesive layer 38. This is beneficial to the overall stability of the battery module 3 and enables the battery box 1 to be adapted to be fixed flat to the electrical equipment.

[0096] Before placing the battery module 3 into the battery box 1, a layer of structural adhesive is applied to the bottom surface of the battery box 1. After the structural adhesive covers the bottom surface of the battery box 1, the battery module 3 is placed inside the battery box 1, and the battery box 1 is placed upright to allow the structural adhesive to cure and form a second adhesive layer 38. Then, structural adhesive is injected into the battery box 1 to cover the adhesive guide groove 36, and the battery box 1 is placed upright to allow the structural adhesive to cure and form a first adhesive layer 37. In this way, both the top and bottom ends of the battery module 3 are bonded to the battery box 1 by structural adhesive, ensuring reliable fixation of the battery module 3 and overall stability.

[0097] like Figure 4 As shown, in some embodiments, the support 2 is provided with an aluminum busbar 23. The aluminum busbar 23 is welded to the individual battery cell 31.

[0098] It is understandable that an aluminum busbar 23 is provided on the bracket 2 to achieve electrical connection between multiple individual battery cells 31. For example, the aluminum busbar 23 is used to achieve series connection between multiple individual battery cells 31. Alternatively, the aluminum busbar 23 is used to achieve parallel connection between multiple individual battery cells 31.

[0099] In some embodiments, at least two aluminum busbars 23 are provided. Each pair of adjacent individual cells 31 are electrically connected by an aluminum busbar 23.

[0100] It should be noted that at least one aluminum busbar 23 can be fixedly connected to the bracket 2 using fasteners. Since the aluminum busbar 23 is welded to the individual battery cell 31, and the battery module 3 is bonded to the battery box 1, the bracket 2 and the battery box 1 only need to be positioned and connected using the positioning part 12 and the connecting part 21; no fasteners are required for fixing. This improves the installation efficiency of the bracket 2.

[0101] like Figure 2 As shown, in some embodiments, the battery box 1 includes a first box 14 and a second box 15. The first box 14 is connected to the second box 15. The battery module 3 and the bracket 2 are both disposed inside the first box 14.

[0102] It is understandable that the battery box 1 is divided into a first box 14 and a second box 15 so that the battery module 3, bracket 2, circuit board 4 and other structures can be built into the battery box 1.

[0103] In some embodiments, both the first housing 14 and the second housing 15 are hollow structures, and the opening of the first housing 14 faces the opening of the second housing 15. Thus, the first housing 14 and the second housing 15 are joined together to form a closed battery box 1.

[0104] The first housing 14 has an outwardly flared section near the opening, thereby forming a mounting groove 11 near the opening of the first housing 14 to accommodate the bracket 2. The non-flared portion of the first housing 14 is used to store the battery module 3.

[0105] like Figure 2 and Figure 3 As shown, in some embodiments, a circuit board 4 is provided inside the first housing 14 or the second housing 15. The circuit board 4 is electrically connected to the battery module 3. The second housing 15 has an integrally formed terminal post 5. The terminal post 5 is electrically connected to the circuit board 4. The terminal post 5 is configured to provide external power.

[0106] It is understandable that the terminal 5 serves as the structure for the battery box 1 to output electrical energy. One end of it is located inside the battery box 1 and is electrically connected to the battery module 3 through the circuit board 4, while the other end is located outside the battery box 1 and is used to electrically connect to external devices.

[0107] In some embodiments, the electrode post 5 includes a positive electrode post 5 and a negative electrode post 5, which are spaced apart on the second housing 15.

[0108] In some embodiments, the circuit board 4 is fixed inside the first housing 14. For example, the circuit board 4 is fixed to the bracket 2.

[0109] In some embodiments, the circuit board 4 is fixed inside the second housing 15. For example, the circuit board 4 is fixed to the inside of the second housing 15 by bolts.

[0110] like Figure 3 As shown, in some embodiments, the pole post 5 is integrally injection molded into the second housing 15, and the outer surface of the pole post 5 is attached to the second housing 15.

[0111] It is understandable that the electrode post 5 is integrally injection molded onto the second housing 15 to achieve a fixed connection between the electrode post 5 and the second housing 15. Since the outer surface of the electrode post 5 is in close contact with the injection-molded connection surface of the second housing 15, the risk of air leakage from the electrode post 5 can be reduced.

[0112] Specifically, the pole post 5 can be connected to the second housing 15 by injection molding through the injection molding ejector pin removal and glue filling process, thereby embedding the pole post 5 inside the second housing 15.

[0113] The outer surface of the terminal post 5 being fitted to the second housing 15 means that the second housing 15 has an embedding cavity for the terminal post 5. The terminal post 5 is partially embedded inside the embedding cavity. Inside the embedding cavity, the outer surface of the terminal post 5 is in contact with the cavity wall. Compared to using sealant to bond the terminal post 5, sealant has risks such as adhesive aging and bonding failure, which can easily cause air leakage from the terminal post 5. In this embodiment, the injection molding method can greatly reduce the risk of air leakage from the terminal post 5 and avoid problems such as sealing failure and moisture intrusion into the battery box 1.

[0114] like Figure 2 As shown, in some embodiments, an electrical connector 16 is electrically connected to the circuit board 4. The electrical connector 16 is configured to connect to an external connector. The electrical connector 16 is fixed to a connector 17. The connector 17 is integrally formed with the second housing 15.

[0115] It is understood that an external connector refers to a connector for an external device, such as a communication connector for an external device. The external connector is connected via electrical connector 16 to achieve signal connection with the external device. Electrical connector 16 is a pin, serving as a communication connector for the battery pack. One end of the pin can be soldered to circuit board 4, and the soldering can accommodate greater installation tolerances through the amount of solder. Due to the small size of the pin, it is fixed to connector 17 and then integrally formed into the second housing 15, thus solving the problem of difficult pin assembly.

[0116] In some embodiments, the connecting seat 17 is integrally injection molded onto the second housing 15 by a secondary injection molding process.

[0117] In some embodiments, the first housing 14 and / or the second housing 15 are provided with explosion-proof openings. An explosion-proof film is adhered to the explosion-proof openings.

[0118] Understandably, the explosion-proof film covers the explosion-proof opening. When the individual battery cells 31 of the battery module 3 do not experience thermal runaway, the explosion-proof film acts as a breathable membrane, thereby balancing the air pressure inside and outside the battery box 1 and preventing pressure buildup inside the battery box 1. Simultaneously, the explosion-proof film also provides ventilation channels with dust and water protection. When the individual battery cells 31 of the battery module 3 experience thermal runaway, the explosion-proof film ruptures and opens a valve, thereby rapidly releasing pressure and preventing the battery box 1 from exploding. Fixing the explosion-proof film using adhesive reduces installation costs.

[0119] In some embodiments, the outer surface of the first housing 14 and / or the second housing 15 is provided with reinforcing ribs 18.

[0120] Understandably, the reinforcing rib 18 can improve the structural strength of the first housing 14 and / or the second housing 15.

[0121] In some embodiments, the outer surface of the first housing 14 is provided with reinforcing ribs 18.

[0122] In some embodiments, the outer surface of the second housing 15 is provided with reinforcing ribs 18.

[0123] In some embodiments, the outer surfaces of the first housing 14 and the second housing 15 are provided with reinforcing ribs 18.

[0124] In some embodiments, the reinforcing ribs 18 are provided as at least two, and the at least two reinforcing ribs 18 are distributed in a grid pattern.

[0125] In some embodiments, the first housing 14 is welded to the second housing 15.

[0126] It is understandable that welding is used to connect the first housing 14 and the second housing 15. Compared with bolt fixing, welding can reduce the connection cost of the first housing 14 and the second housing 15 and improve the connection strength of the first housing 14 and the second housing 15.

[0127] In some embodiments, welding ribs may be provided on the side of the first housing 14 and the second housing 15 facing each other, so that the first housing 14 and the second housing 15 can be welded at the location of the welding ribs.

[0128] The welding methods for the first housing 14 and the second housing 15 include, but are not limited to, arc welding, laser welding, resistance welding, friction welding, brazing, etc. The welding method can be reasonably selected based on the materials of the first housing 14 and the second housing 15.

[0129] In some embodiments, the first housing 14 and / or the second housing 15 are provided with mounting bases 19 for connecting electrical equipment.

[0130] It is understood that the first housing 14 and / or the second housing 15 can be fixed to the electrical equipment via the mounting base 19, thereby securing the battery pack to the electrical equipment.

[0131] In some embodiments, the mounting base 19 is integrally formed on the first housing 14, and a plurality of mounting bases 19 are provided at intervals on the first housing 14. For example, four mounting bases 19 are provided on the first housing 14, and the four mounting bases 19 are respectively located at the four corners of the first housing 14.

[0132] In some embodiments, the mounting base 19 is integrally formed on the second housing 15, and a plurality of mounting bases 19 are provided at intervals on the second housing 15. For example, four mounting bases 19 are provided on the second housing 15, and the four mounting bases 19 are respectively located at the four corners of the second housing 15.

[0133] In some embodiments, both the first housing 14 and the second housing 15 are provided with a plurality of mounting bases 19.

[0134] In some embodiments, the mounting base 19 is provided with a connection hole. By fastening fasteners through the connection hole and the mounting hole of the electrical device, a fixed connection is achieved between the mounting base 19 and the electrical device, thereby securing the battery pack and the electrical device together.

[0135] Secondly, embodiments of this application also provide an electrical device. This electrical device includes a battery pack as described in any of the foregoing embodiments. This electrical device possesses all the beneficial effects of the battery packs in the foregoing embodiments, which will not be repeated here.

[0136] In some embodiments, the electrical equipment includes vehicles, energy storage devices, etc. This is particularly suitable as a low-voltage starting power supply for new energy vehicles.

[0137] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A battery pack, characterized in that, include: The battery box (1) has a mounting groove (11) formed near the opening, and a positioning part (12) is provided in the mounting groove (11); A bracket (2) is provided in the mounting groove (11). The bracket (2) is provided with a connecting part (21) protruding along the first direction. The connecting part (21) is connected to the positioning part (12).

2. The battery pack according to claim 1, characterized in that, One of the connecting part (21) and the positioning part (12) includes a positioning post, and the other is constructed with a positioning hole (22), wherein the positioning post is engaged in the positioning hole (22).

3. The battery pack according to claim 1, characterized in that, The connecting part (21) is provided in at least two parts and is diagonally distributed on the bracket (2), and the positioning part (12) is adapted to the connecting part (21).

4. The battery pack according to any one of claims 1 to 3, characterized in that, The battery pack also includes a battery module (3), which is disposed in the battery box (1). The battery module (3) includes at least two individual cells (31) spaced apart along a second direction. An isolation member (32) is provided between each two adjacent individual cells (31). The second direction is at an angle to the first direction.

5. The battery pack according to claim 4, characterized in that, The isolation element (32) is configured as an annular shape, and the isolation element (32) is located outside the expansion region of the single cell (31).

6. The battery pack according to claim 4, characterized in that, The battery module (3) further includes a fixing member (33), which is wrapped around at least two of the individual battery cells (31). The fixing member (33) is connected to a first flexible member (34) on at least one side in the second direction. The first flexible member (34) abuts against the inner wall of the battery box (1), or the first flexible member (34) is spaced apart from the inner wall of the battery box (1).

7. The battery pack according to claim 6, characterized in that, The battery module (3) further includes a second flexible member (35), which is wrapped around at least two of the individual cells (31). The second flexible member (35) is offset from the fixing member (33), and the second flexible member (35) is disposed near the top cover assembly of the individual cell (31) relative to the fixing member (33).

8. The battery pack according to claim 7, characterized in that, The second flexible member (35) abuts against the inner wall of the battery box (1) and defines a guide groove (36) in the area between the second flexible member (35) and the opening of the battery box (1). A first adhesive layer (37) is provided in the guide groove (36), and the first adhesive layer (37) is configured to bond the battery module (3) and the battery box (1).

9. The battery pack according to claim 8, characterized in that, The inner wall surface of at least one side of the battery box (1) includes an inclined section (13) facing the opening of the battery box (1), wherein at least a portion of the inclined section (13) serves as the groove wall surface of the adhesive guide groove (36).

10. The battery pack according to claim 4, characterized in that, The bracket (2) is provided with an aluminum busbar (23), which is welded to the individual battery cell (31).

11. The battery pack according to claim 4, characterized in that, The battery box (1) includes a first box (14) and a second box (15), the first box (14) and the second box (15) are connected, and the battery module (3) and the bracket (2) are both located in the first box (14).

12. The battery pack according to claim 11, characterized in that, A circuit board (4) is provided inside the first housing (14) or the second housing (15). The circuit board (4) is electrically connected to the battery module (3). The second housing (15) is integrally formed with a terminal post (5). The terminal post (5) is electrically connected to the circuit board (4). The terminal post (5) is configured to provide power to the outside.

13. The battery pack according to claim 12, characterized in that, The pole post (5) is integrally injection molded into the second housing (15), and the outer surface of the pole post (5) is attached to the second housing (15).

14. The battery pack according to claim 12, characterized in that, The circuit board (4) is electrically connected to an electrical connector (16), which is configured to connect to an external connector. The electrical connector (16) is fixed to a connector (17), which is integrally formed with the second housing (15).

15. An electrical appliance, characterized in that, Includes the battery pack as described in any one of claims 1 to 14.

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