A battery pack and an electric device

Abstract

The battery pack and the electric device are provided, the battery pack comprises: a box body; a plurality of partition beams arranged in the accommodating cavity; a battery pack accommodated in the battery compartment; and an insulating adapter arranged in the partition beam between the electrical compartment and the battery compartment, the insulating adapter has a second bottom surface and a second top surface along a third direction, the second top surface is provided with a mounting hole; the partition beam is provided with a mounting groove, the mounting groove forms a first opening on at least one first side surface, and the mounting groove forms a second opening on the first top surface; the insulating adapter extends into the mounting groove from the first opening, the second top surface extends out of the mounting groove from the second opening, or the mounting hole is exposed from the second opening. Compared with the related art, the mounting groove is arranged on the partition beam, the insulating adapter is inserted into the mounting groove, the electrically conductive row and the electrical component are electrically connected on the insulating adapter, the cross-compartment high-voltage wire harness is omitted, the assembly process is simplified, and the positioning accuracy is improved.

Description

Technical Field

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

[0002] In related technologies, the battery compartment and the electrical compartment are generally physically isolated by metal partition beams. In order to output battery energy to an external load, the high-voltage busbar in the battery compartment needs to be electrically connected to the electrical components in the electrical compartment. To achieve cross-compartment electrical connection, an additional high-voltage harness and metal adapter plate are required between the high-voltage busbar in the battery compartment and the electrical components in the electrical compartment. This involves multiple connection points and lacks a positioning structure. Utility Model Content

[0003] The purpose of this disclosure is to provide a battery pack and electrical equipment to solve the technical problems in the related art. It can directly integrate insulating adapters on the separator beam to eliminate intermediate flexible wiring harnesses and improve assembly accuracy and system reliability.

[0004] In a first aspect, this disclosure provides a battery pack, comprising: A housing, the housing comprising a frame and a bottom plate, the bottom plate and the frame being connected to form a receiving cavity; Multiple partition beams are disposed within the receiving cavity. The partition beams extend along a first direction and are fixedly connected to the surrounding frame. The multiple partition beams are spaced apart along a second direction to divide the receiving cavity into an electrical compartment and at least one battery compartment arranged sequentially along the second direction. Each partition beam has two opposing first sides along the second direction and a first bottom surface and a first top surface along a third direction. The first bottom surface is connected to the base plate. The first direction, the second direction, and the third direction are perpendicular to each other. The battery pack is housed within the battery compartment; An insulating adapter is disposed within the partition beam between the electrical compartment and the battery compartment. The insulating adapter has a second bottom surface and a second top surface along the third direction, and the second top surface is provided with mounting holes. The partition beam is provided with a mounting groove, the mounting groove forming a first opening on at least one of the first side surfaces, and the mounting groove forming a second opening on the first top surface; The insulating adapter extends from the first opening into the mounting groove.

[0005] Secondly, this disclosure provides an electrical device including the aforementioned battery pack.

[0006] Compared with related technologies, this disclosure achieves electrical connection between the conductive busbar and electrical components by setting an installation groove on the partition beam and inserting an insulating adapter in the installation groove, thus eliminating the need for cross-compartment high-voltage wiring harnesses; during maintenance, the insulating adapter can be pulled out from the side by simply removing the fasteners of the electrical components, simplifying the assembly process and improving positioning accuracy. Attached Figure Description

[0007] Figure 1 This is a perspective view of the battery pack provided in this disclosure.

[0008] Figure 2 yes Figure 1 A perspective view of the partition beams inside the battery pack shown.

[0009] Figure 3 yes Figure 1 The front view of the partition beam inside the battery pack shown.

[0010] Figure 4 yes Figure 1 A perspective view of the insulating adapter inside the battery pack shown.

[0011] Figure 5 yes Figure 1 The image shows a front view of the insulating adapter inside the battery pack.

[0012] Figure 6 yes Figure 1 The image shows a bottom view of the insulating adapter inside the battery pack.

[0013] Figure 7 yes Figure 1 The image shows a side view of the insulating adapter inside the battery pack.

[0014] Figure 8 yes Figure 1 A perspective view of the casing inside the battery pack.

[0015] Figure 9 yes Figure 1 The side view of the casing inside the battery pack shown.

[0016] Figure 10 yes Figure 1 The diagram shows the assembly status of the insulating adapter and the casing within the battery pack.

[0017] Figure 11 yes Figure 1 The diagram shows the connection state of the conductive busbar in the battery compartment and the electrical connection piece in the electrical compartment within the battery pack.

[0018] Figure 12 yes Figure 1 The diagram shows a top view of the battery compartment's conductive busbar and the electrical connection piece of the electrical compartment within the battery pack, in their overlapping state.

[0019] Figure 13 yes Figure 12 A top view from angle AA.

[0020] Figure 14 yes Figure 13 A magnified structural diagram at point B.

[0021] Explanation of reference numerals in the attached figures: 10-Box body, 11-Frame, 12-Bottom plate, 13-Receiving cavity, 131-Electrical compartment, 132-Battery compartment, 14-Separating beam, 141-First bottom surface, 142-First top surface, 143-First side surface, 15-Mounting groove, 151-First opening, 152-Second opening, 153-Protruding structure; 20 - Battery pack, 21 - Battery, 22 - Conductor busbar; 30 - Electrical components; 31 - Electrical connectors; 40-Insulating adapter, 41-Second bottom surface, 42-Second top surface, 43-Mounting hole, 44-Recessed structure, 45-Protruding rib, 46-Assembly plate, 47-Slot, 48-Guide protrusion; 50-Cover, 51-Raised strip, 52-Clocking block, 53-Guide groove; D1 - First direction.

[0022] D2 - Second direction.

[0023] D3-Third direction. Detailed Implementation

[0024] The embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this disclosure, and should not be construed as limiting this disclosure.

[0025] like Figures 1 to 14 As shown, an embodiment of this disclosure provides a battery pack, including a housing 10 and a battery pack 20 housed within the housing 10.

[0026] To better illustrate the internal structure of the battery pack provided in the embodiments of this disclosure, see the following reference: Figure 1As shown, this disclosure defines a first direction D1, a second direction D2, and a third direction D3. The first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other, and all three directions extend bidirectionally. For example, the first direction D1 can be defined as the +X-axis direction and the -X-axis direction, the second direction D2 can be defined as the +Y-axis direction and the -Y-axis direction, and the third direction D3 can be defined as the +Z-axis direction and the -Z-axis direction. The first direction D1, the second direction D2, and the third direction D3 together constitute a three-dimensional coordinate system. In the embodiments provided in this disclosure, the first direction D1 is exemplarily defined as the width direction of the box 10, the second direction D2 is the length direction of the box 10, and the third direction D3 is the height direction of the box 10.

[0027] In the embodiments provided in this disclosure, the housing 10 is a closed or semi-closed structure, and a receiving cavity 13 is formed inside the housing 10. The battery pack 20 and accessories are arranged in the receiving cavity 13. Multiple batteries 21 with similar capacity and internal resistance are connected in series or parallel to form the battery pack 20. The battery 21 can store chemical energy and controllably convert chemical energy into electrical energy. In the recyclable battery 21, the active material can be activated by charging after discharge and continue to be used. The battery 21 includes a casing and a cell disposed inside the casing. The receiving cavity 13 provides installation space for the battery pack 20, battery management system, cooling system, electrical connection components, etc., ensuring that they maintain a relatively stable position during battery pack operation and avoiding damage to components or loosening of connections due to vibration, impact, or other factors. The housing 10 can be cast from materials such as steel plate or aluminum alloy, or lightweight materials such as glass fiber reinforced composite materials or carbon fiber reinforced composite materials. The shape of the housing 10 can be cylindrical, cuboid, cube, etc., and is not limited herein.

[0028] In one feasible implementation, refer to Figure 1 As shown, the box 10 includes a frame 11, a bottom plate 12, and a lid (not shown). The bottom plate 12 and the frame 11 are connected to form a receiving cavity 13. The receiving cavity 13 has an opening on the side opposite to the bottom plate 12. The lid is designed to be detachable or sealable. The lid is attached to the frame 11 to close the opening, thereby achieving protection and sealing.

[0029] The enclosure 11 is the frame structure of the box 10, serving as support, protection, and connection. The enclosure 11 can be formed by splicing multiple beams together. In one feasible embodiment, the enclosure 11 includes four sub-frames, connected end-to-end to form an enclosed space, which is then sealed by a box cover and a bottom plate 12 to form a receiving cavity 13. The enclosure 11 can be made of various materials, such as aluminum alloy, copper alloy, steel, or plastic. The enclosure 11 can be rectangular, circular, polygonal, etc., with no specific limitation. The interior of the enclosure 11 can be a solid structure or contain a cavity.

[0030] The base plate 12 is the main load-bearing component of the battery pack, typically a structural member installed at the bottom of the battery pack, used to support and secure the battery pack 20, battery management system, cooling system, and other components inside the battery pack. The bottom surface of the battery 21 is fixed to the upper part of the base plate 12 by structural adhesive or bolts. A thermally conductive silicone pad (for heat dissipation) or a foam cushioning pad (for shock absorption) can be laid between the battery pack 20 and the base plate 12.

[0031] The base plate 12 is located at the bottom of the frame 11. For example, the base plate 12 can be fixed to the bottom of the frame 11 by welding, riveting, screwing, or other methods, or it can be integrally formed with the frame 11. The base plate 12 can be made of various materials, such as aluminum alloy, steel, stainless steel, and other high-strength materials. The base plate 12 can be rectangular, circular, polygonal, or a plate-like structure; there are no specific limitations. Its size is determined by the number of batteries 21 contained in the battery pack and the size of the batteries 21.

[0032] At least one partition beam 14 is provided inside the receiving cavity 13. The partition beam 14 extends along the first direction D1 and is fixedly connected to the surrounding frame 11. The two ends of the partition beam 14 can be fixed to opposite sides of the surrounding frame 11 by riveting or welding to improve the bending strength of the surrounding frame 11 and improve the structural stability of the box 10. At the same time, the beam body of the partition beam 14 serves as a lateral limiting wall for the large surface of the battery 21, suppressing the bulging deformation of the battery 21 shell and reducing fatigue cracks generated by the battery 21 when it vibrates or bulges.

[0033] The partition beam 14 can be made of metal, such as aluminum, or it can be integrally molded by rubber injection molding, plastic injection molding, or molding injection molding. The plastic used in plastic injection molding can be polyethylene, polypropylene, ABS, PA, polystyrene, etc. The partition beam 14 can be formed by die casting or other methods such as extrusion molding.

[0034] Multiple partition beams 14 are spaced apart along the second direction D2 to divide the receiving cavity 13 into an electrical compartment 131 and at least one battery compartment 132 arranged sequentially along the second direction D2. Electrical components 30 such as high-voltage connectors, fuses, and relays are placed in the electrical compartment 131, and batteries 21 are placed in the battery compartment 132. The battery compartments 132 are independent of each other to achieve failure isolation and thermal runaway zoning management.

[0035] The partition beam 14 has two opposing first sides 143 along the second direction D2, with each side facing an adjacent compartment. These sides can withstand the force exerted by the expansion of the battery 21. The partition beam 14 also has a first bottom surface 141 and a first top surface 142 along the third direction D3. The first bottom surface 141 is connected to the base plate 12. The first bottom surface 141 is attached to or embedded in the base plate 12 and fixed by welding, providing support and transferring the impact or expansion force on the partition beam 14 to the floor.

[0036] Reference Figure 4 as well as Figure 11 As shown, an insulating adapter 40 is provided on the partition beam 14 between the electrical compartment 131 and the battery compartment 132. The insulating adapter 40 is insulated from the metal partition beam 14 to prevent leakage. The insulating adapter 40 can be made of materials such as polypropylene (PP) or epoxy resin (EP). The insulating adapter 40 has a second bottom surface 41 and a second top surface 42 along the third direction D3. The second top surface 42 is provided with mounting holes 43. The second top surface 42 can be used to form a common contact surface between the electrical components 30 of the electrical compartment 131 and the conductive busbar 22 of the battery compartment 132. The conductive busbar 22 electrically connects the terminals of at least two batteries 21 to realize the series or parallel connection of multiple batteries 21. The conductive busbar 22 is made of metals such as copper, aluminum, tungsten, and manganese, or alloys such as copper-aluminum composite materials, which have good electrical conductivity.

[0037] In one feasible implementation, refer to Figures 11 to 14 As shown, the end of the conductive bar 22 of the battery compartment 132 presses against the second top surface 42, and the electrical connection piece 31 of the electrical component 30 of the electrical compartment 131 presses against the conductive bar 22. Then, the fastener passes through the electrical connection piece 31 and the reserved hole on the conductive bar 22 in sequence and extends into the mounting hole 43 for fixing, thereby realizing the electrical connection between the conductive bar 22 and the electrical component 30, reducing the assembly process and improving the positioning accuracy.

[0038] Reference Figure 3 as well as Figure 14As shown, the partition beam 14 is provided with a mounting groove 15. The mounting groove 15 forms a first opening 151 on at least one first side 143 and a second opening 152 on the first top surface 142. The insulating adapter 40 extends into the mounting groove 15 from the first opening 151. The second top surface 42 extends out of the mounting groove 15 from the second opening 152 or the mounting hole 43 is exposed from the second opening 152.

[0039] After the insulating adapter 40 slides horizontally into the mounting groove 15 along the first opening 151, its second top surface 42 protrudes through the second opening 152 from the first top surface 142 of the partition beam 14 or is received within the mounting groove 15, allowing the conductive busbar 22 to be pressed against the insulating adapter 40 in the vertical direction for secure fastening. During maintenance, the insulating adapter 40 can be pulled out laterally simply by removing the fasteners, which is convenient and quick.

[0040] By setting an installation groove 15 on the partition beam 14 and inserting an insulating adapter 40 into the installation groove 15, the conductive busbar 22 and the electrical component 30 are electrically connected on the insulating adapter 40, eliminating the need for cross-compartment high-voltage wiring harnesses; during maintenance, the insulating adapter 40 can be pulled out from the side by simply removing the fasteners of the electrical component 30, simplifying the assembly process and improving positioning accuracy.

[0041] Furthermore, the mounting groove 15 has a guide portion on the inner wall surface of at least one side in the first direction D1. The guide portion is located on the inner wall of the mounting groove 15 on either side or both sides in the first direction D1. The guide portion and the mounting groove 15 can be integrally formed or post-processed. The guide portion can be a rib 45, a groove, an arc-shaped slide or a combination thereof. The guide portion plays a positioning and guiding role, preventing the insulating adapter 40 from twisting or deflecting during insertion, while reducing the insertion friction resistance.

[0042] The insulating adapter 40 has a guide mating portion on the outer wall surface of at least one side in the first direction D1. The guide mating portion and the guide portion have complementary contours to form a guide pair. For example, if the guide portion is a protrusion, the guide mating portion is a corresponding groove; if the guide portion is a dovetail, the guide mating portion is a corresponding dovetail groove, etc.

[0043] The guide mating part and the guide part form a guide mating to guide the insulating adapter 40 to extend into the mounting groove 15 along the second direction D2. The guide pair retains only the degree of freedom in the second direction D2, while the other five degrees of freedom are jointly constrained by the guide part and the guide mating part. The insulating adapter 40 is limited by the first direction D1 and the third direction D3 during the insertion stroke, ensuring that after installation, the center line of the mounting hole 43 is coaxial with the center lines of the reserved holes of the conductive busbar 22 and the electrical connecting piece 31.

[0044] In one feasible implementation, refer to Figure 4 as well as Figure 5As shown, the guide mating part includes a recessed structure 44 recessed on the outer wall surface of the insulating adapter 40. The recessed structure 44 is directly injection molded or machined on the upper side wall of the insulating adapter 40 in the first direction D1. The recessed structure 44 passes through the mounting groove 15 along the second direction D2.

[0045] Reference Figure 3 as well as Figure 14 As shown, the guide section includes a protruding structure 153 protruding from the inner wall of the mounting groove 15. The protruding structure 153 is integrally formed with the partition beam 14 or is formed by post-machining. The protruding structure 153 extends continuously along the second direction D2. The protruding structure 153 can form local reinforcing ribs on the inner wall of the partition beam 14. While playing a guiding role, it can also improve local stiffness and reduce the risk of plastic deformation of the partition beam 14 caused by local stress generated when the insulating adapter 40 is inserted.

[0046] When the insulating adapter 40 is inserted into the mounting groove 15 through the first opening 151, the protruding structure 153 extends from the first direction D1 into the recessed structure 44 and forms a clearance fit with the recessed structure 44, ensuring that the insertion stroke has only the degree of freedom in the second direction D2. The outer contour dimension of the protruding structure 153 is slightly smaller than the inner contour dimension of the recessed structure 44 to form a clearance fit. The clearance fit guides the movement of the insulating adapter 40, which reduces sliding resistance and restricts the wobbling of the insulating adapter 40 in the first direction D1 and the third direction D3.

[0047] Preferably, refer to Figure 3 as well as Figure 14 As shown, protrusions 153 are formed on the inner walls of the mounting groove 15 on opposite sides in the first direction D1. One protrusion 153 is symmetrically provided on each of the two inner walls of the mounting groove 15 facing each other along the first direction D1. The two protrusions 153 clamp and limit the insulating adapter 40 in the first direction D1 within the mounting groove 15, changing the constraint plane of the guide pair from one side to two sides. The force generated by the insulating adapter 40 during insertion is evenly distributed to the two side walls, preventing excessive local stress on one side wall from causing buckling, improving the overall torsional stiffness of the mounting groove 15, and ensuring good planar contact for the overlap of the conductive busbar 22 and the electrical connecting piece 31 on the second top surface 42.

[0048] Reference Figure 4 as well as Figure 5As shown, recessed structures 44 are formed on the outer wall surfaces of the insulating adapter 40 on opposite sides in the first direction D1. A recessed structure 44 is symmetrically provided on each of the two opposite outer walls of the insulating adapter 40 along the first direction D1. The two recessed structures 44 and the two protruding structures 153 form complementary contours, ensuring that the insulating adapter 40 remains aligned during insertion. This ensures that after installation, the center line of the mounting hole 43 is coaxial with the center lines of the reserved holes of the conductive busbar 22 and the electrical connecting piece 31.

[0049] In one feasible implementation, refer to Figure 6 as well as Figure 7 As shown, a raised rib 45 is provided on the second bottom surface 41, extending along the second direction D2. The raised rib 45 and the insulating adapter 40 are preferably integrally formed. The extension direction of the raised rib 45 is parallel to the insertion direction of the insulating adapter 40, and the length of the raised rib 45 covers the entire insertion section of the insulating adapter 40. The height of the raised rib 45 is slightly greater than the vertical gap from the bottom surface of the recessed structure 44 to the top surface of the raised structure 153, forming an interference preload. When the insulating adapter 40 is inserted into the mounting groove 15, the raised rib 45 can generate a slight elastic deformation, providing elastic support from bottom to top, lifting the insulating adapter 40 as a whole. This allows the top surface of the raised structure 153 of the mounting groove 15 to fit against the bottom surface of the recessed structure 44 of the insulating adapter 40. The overlapping surface of the conductive bus 22 and the mounting hole 43 always maintain the designed height, ensuring the smooth overlapping and fixing of the conductive bus 22 and the electrical connecting piece 31, while also reducing the impact noise of the guide pair under vibration conditions.

[0050] Preferably, multiple ribs 45 are provided, and the multiple ribs 45 are spaced apart along the first direction D1 to form a parallel grid structure. This transforms the surface contact of the second bottom surface 41 into a line contact between the ribs 45 and the bottom surface of the mounting groove 15, reducing the actual contact area and lowering the insertion friction resistance, while ensuring that the top surface of the recessed structure 44 and the top surface of the raised structure 153 are in full contact along the first direction D1.

[0051] In the embodiments provided in this disclosure, the size of the rib 45 on the third-direction D3 is between 0.5mm and 3mm. The value can be 0.5mm, 0.7mm, 1mm, 1.2mm, 1.5mm, 1.7mm, 2mm, 2.2mm, 2.5mm, 2.7mm, or 3mm. The value can be specifically the values ​​listed above, or any value between 0.5mm and 3mm.

[0052] If the size of the rib 45 is too small, the elastic compression is insufficient and cannot eliminate the vertical gap between the bottom surface of the recessed structure 44 and the top surface of the raised structure 153. The adhesion between the recessed structure 44 and the top surface of the raised structure 153 decreases, and the guide pair will still generate impact noise under vibration conditions.

[0053] If the size of the protruding rib 45 is too large, the insulating adapter 40 will be difficult to insert smoothly into the mounting groove 15. If the concave structure 44 and the top surface of the protruding structure 153 are too tightly fitted, the insertion friction resistance of the insulating adapter 40 will be too large, affecting the assembly.

[0054] In the embodiments provided in this disclosure, reference is made to Figure 8 , Figure 11 as well as Figure 14 The insulating adapter 40 is detachably fitted with a cover 50. The cover 50 is an injection molded part independent of the insulating adapter 40. It can be repeatedly disassembled and assembled to facilitate the assembly and maintenance between the electrical connection piece 31 of the electrical component 30 and the conductive bar 22 of the battery 21, thereby improving maintenance efficiency. The cover 50 is set above the mounting hole 43 to form a barrier protection to prevent impurities or foreign objects from entering and causing insulation failure or short circuit.

[0055] In one feasible implementation, the housing 50 and the insulating adapter 40 are snap-fit ​​connected, specifically, referring to... Figure 8 as well as Figure 9 As shown, a protruding strip 51 is provided on the cover 50. The protruding strip 51 extends integrally from the side wall of the cover 50. A locking block 52 is provided at the end of the protruding strip 51 away from the cover 50. The locking block 52 and the protruding strip 51 form an elastic cantilever. The elastic cantilever provides an elastic deformation stroke, so that the locking block 52 can be pushed away and avoided when it is inserted into the slot 47. When it is inserted into the slot 47, it automatically retracts and springs back to lock after being locked in place.

[0056] Reference Figure 4 as well as Figure 5 As shown, an assembly plate 46 protrudes from the second top surface 42, and a slot 47 is provided on the assembly plate 46. The slot 47 is a blind hole or notch. The inner contour surface of the slot 47 is complementary to the outer contour surface of the block 52, and the slot 47 and the block 52 form a snap-fit ​​engagement.

[0057] The snap-fit ​​process is as follows: The cover 50 is placed above the insulating adapter 40, and the protrusion 51 and the slot 47 are initially aligned in the third direction D3. Then, downward pressure is applied along the third direction D3. The guide slope at the front end of the snap block 52 first contacts the entrance of the slot 47, and the protrusion 51 elastically avoids it, accumulating elastic restoring force. When the thickest part of the snap block 52 passes the top wall of the slot 47, the elastic restoring force is released, the protrusion 51 rebounds, and the barb of the snap block 52 forms a limiting snap-fit ​​with the top wall of the slot 47.

[0058] Disassembly process: Pinch the exposed part of the protrusion 51 inward to deform the protrusion 51, causing the barb of the locking block 52 to disengage from the slot 47. While maintaining the pinching state, lift the cover 50 upward along the third direction D3. The locking block 52 slides out along the side wall of the slot 47, and the protrusion 51 elastically deforms back to its free state. At this time, fastening or maintenance operations can be performed, which is convenient and quick.

[0059] Furthermore, referring to Figure 8 as well as Figure 9 As shown, a guide groove 53 is formed on the side of the cover 50, which is opened longitudinally (third direction D3) along the side wall of the cover 50. The width of the guide groove 53 is slightly larger than the width of the subsequent guide protrusion 48. A protruding strip 51 is provided at the end of the guide groove 53 of the cover 50. The protruding strip 51 extends outward from the end wall of the guide groove 53 of the cover 50. The thickness of the protruding strip 51 is less than or equal to the wall thickness of the cover 50 at the guide groove 53, so as to avoid spatial interference with the guide protrusion 48.

[0060] Reference Figure 4 as well as Figure 10 As shown, the assembly plate 46 is provided with a guide protrusion 48, which forms a clearance fit with the guide groove 53. This provides pre-positioning in the early stage of engagement. During the insertion stage, the guide protrusion 48 first enters the guide groove 53 to ensure that the locking block 52 is coaxial with the locking groove 47, and the locking block 52 can smoothly enter the locking groove 47 to form a locking fit.

[0061] In the embodiments provided in this disclosure, in the first direction D1, the length of the partition beam 14 ranges from 250mm to 1500mm, the length of the mounting groove 15 ranges from 20mm to 80mm, and the ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the partition beam 14 is between 0.03 and 0.1. The value can be 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, or 0.1, and can specifically be one of the aforementioned values ​​or any value between 0.03 and 0.1. This ensures that the mounting groove 15 meets the electrical connection requirements between the conductive busbar 22 and the electrical connecting piece 31 while guaranteeing the structural strength of the partition beam 14 and the stability of its support for the battery 21.

[0062] If the ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the partition beam 14 is too small, the dimension of the mounting groove 15 in the first direction D1 will be too small, resulting in the second top surface 42 on the insulating adapter 40 being too narrow. The width of the conductive bar 22 and / or the electrical connecting piece 31 will exceed the second top surface 42, and the edge of the conductive bar 22 and / or the electrical connecting piece 31 will protrude from the second top surface 42, which may easily cause insulation failure and short circuit.

[0063] If the ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the separator beam 14 is too large, the dimension of the mounting groove 15 in the first direction D1 will be too large. This will excessively weaken the bending stiffness and structural strength of the separator beam 14 in the first direction D1, making the separator beam 14 more prone to deformation when subjected to the expansion force and vibration load of the battery 21, thus affecting the overall structural stability of the battery pack. At the same time, if the mounting groove 15 is too long, the large surface of the battery 21 will lose sufficient support in the second direction D2, making the large surface of the battery 21 more prone to deformation and fatigue cracks under vibration and expansion, ultimately leading to the rupture of the battery 21 casing and causing safety problems such as thermal runaway.

[0064] In the embodiments provided in this disclosure, on the third-party direction D3, the height range of the partition beam 14 is 150mm-300mm, the length range of the mounting groove 15 is 20mm-80mm, and the ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the partition beam 14 is between 0.1 and 0.3. The value can be 0.1, 0.12, 0.15, 0.17, 0.2, 0.22, 0.25, 0.27, or 0.3, specifically the values ​​listed above, or any value between 0.1 and 0.3. This ensures that the mounting groove 15 meets the installation requirements of the insulating adapter 40 while guaranteeing the structural strength of the partition beam 14 and the stability of its support for the battery 21.

[0065] The ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the partition beam 14 is too small, resulting in the mounting groove 15 being too shallow. The insulating adapter 40 needs to protrude too much to reach the installation position of the conductive busbar 22 and the electrical connecting piece 31. Under vibration conditions, the protruding part becomes a cantilever beam, amplifying the swing, which can easily cause the bottom of the insulating adapter 40 to be pulled off or broken, or cause fatigue loosening at the connection between the conductive busbar 22 and the electrical connecting piece 31.

[0066] If the ratio of the minimum dimension of the mounting groove 15 to the minimum dimension of the separator beam 14 is too large, it will excessively weaken the bending stiffness and structural strength of the separator beam 14 in the third direction D3 (the height direction of the battery 21). This will make the separator beam 14 more prone to deformation when subjected to the expansion force and vibration load of the battery 21, affecting the overall structural stability of the battery pack. At the same time, if the mounting groove 15 is too high, the large surface of the battery 21 will lose sufficient support in the height direction of the battery 21. Due to the lack of sufficient vertical constraint, the large surface of the battery 21 is more prone to deformation and fatigue cracks during vibration and expansion, ultimately leading to the rupture of the battery 21 casing and causing safety problems such as thermal runaway.

[0067] In one feasible implementation, the ratio of the minimum dimension of the mounting groove 15 in the first direction D1 to the minimum dimension of the mounting groove 15 in the third direction D3 is between 0.5 and 5. The value can be 0.1, 0.12, 0.15, 0.17, 0.2, 0.22, 0.25, 0.27, or 0.3, and can specifically be one of the values ​​listed above, or any value between 0.1 and 0.3.

[0068] If the ratio of the minimum dimension of the mounting groove 15 in the first direction D1 to the minimum dimension of the mounting groove 15 in the third direction D3 is too small, the mounting groove 15 will be too high in the third direction D3 and too narrow in the first direction D1. This will cause the second top surface 42 on the insulating adapter 40 to be too narrow, and the width of the conductive bus 22 and / or the electrical connecting piece 31 will exceed the second top surface 42. The edges of the conductive bus 22 and / or the electrical connecting piece 31 will protrude from the second top surface 42, which may easily cause insulation failure and short circuit.

[0069] If the ratio of the minimum dimension of the mounting groove 15 in the first direction D1 to the minimum dimension of the mounting groove 15 in the third direction D3 is too large, the mounting groove 15 will be too long in the first direction D1 and too short in the third direction D3. This results in the mounting groove 15 being too shallow, requiring the insulating adapter 40 to protrude excessively to reach the installation positions of the conductive busbar 22 and the electrical connecting piece 31. Under vibration conditions, the protruding part becomes a cantilever beam, amplifying the oscillation and easily causing local pull-out or breakage of the bottom of the insulating adapter 40, or fatigue loosening at the connection between the conductive busbar 22 and the electrical connecting piece 31. At the same time, the large surface of the battery 21 loses sufficient support in the length direction of the battery 21, making the large surface of the battery 21 more prone to deformation and fatigue cracks during vibration and swelling, ultimately leading to the rupture of the battery 21 casing and causing safety problems such as thermal runaway.

[0070] Secondly, this disclosure provides an electrical device that may include the aforementioned battery pack.

[0071] Battery 21 can serve as an operating power source for electrical equipment, or as a driving power source for electrical equipment, replacing or partially replacing fuel or natural gas to provide driving power for vehicles. Electrical equipment includes numerous technological fields such as electric ships, aircraft, laptops, power tools, electric bicycles, electric motorcycles, electric cars, military equipment, and aerospace.

[0072] In addition, electrical equipment can also be used for the storage, conversion, and release of recyclable electrical energy.

[0073] The above description, based on the embodiments shown in the figures, details the structure, features, and effects of this disclosure. The above description is only a preferred embodiment of this disclosure, but this disclosure does not limit the scope of implementation to what is shown in the figures. Any changes made in accordance with the concept of this disclosure, or modifications to equivalent embodiments with equivalent changes, that do not exceed the spirit covered by the specification and figures, should be within the protection scope of this disclosure.

Claims

1. A battery pack, characterized in that, include: A housing, the housing comprising a frame and a bottom plate, the bottom plate and the frame being connected to form a receiving cavity; Multiple partition beams are disposed within the receiving cavity. The partition beams extend along a first direction and are fixedly connected to the surrounding frame. The multiple partition beams are spaced apart along a second direction to divide the receiving cavity into an electrical compartment and at least one battery compartment arranged sequentially along the second direction. Each partition beam has two opposing first sides along the second direction and a first bottom surface and a first top surface along a third direction. The first bottom surface is connected to the base plate. The first direction, the second direction, and the third direction are perpendicular to each other. The battery pack is housed within the battery compartment; An insulating adapter is disposed within the partition beam between the electrical compartment and the battery compartment. The insulating adapter has a second bottom surface and a second top surface along the third direction, and the second top surface is provided with mounting holes. The partition beam is provided with a mounting groove, the mounting groove forming a first opening on at least one of the first side surfaces, and the mounting groove forming a second opening on the first top surface; The insulating adapter extends from the first opening into the mounting groove.

2. The battery pack according to claim 1, characterized in that: The mounting groove has a guide portion on the inner wall surface of at least one side in the first direction, and the insulating adapter has a guide mating portion on the outer wall surface of at least one side in the first direction. The guide mating portion and the guide portion form a guide mating to guide the insulating adapter to extend into the mounting groove along the second direction.

3. The battery pack according to claim 2, characterized in that: The guide mating part includes a recessed structure recessed on the outer wall surface of the insulating adapter, and the guide part includes a protruding structure protruding from the inner wall surface of the mounting groove. The protruding structure extends into the recessed structure from the first direction and forms a clearance fit with the recessed structure.

4. The battery pack according to claim 3, characterized in that: The protruding structure is formed on the inner wall surface of the mounting groove on both sides of the first direction, and the recessed structure is formed on the outer wall surface of the insulating adapter on both sides of the first direction.

5. The battery pack according to claim 3, characterized in that: The second bottom surface is provided with a raised rib, which extends along the second direction.

6. The battery pack according to claim 5, characterized in that: The ribs are provided in multiple portions, and the multiple ribs are spaced apart along the first direction.

7. The battery pack according to claim 5, characterized in that: In the third direction, the size of the protruding rib is between 0.5mm and 3mm.

8. The battery pack according to claim 1, characterized in that: The insulating adapter is detachably fitted with a cover; The cover is provided with a protruding strip, and a locking block is provided at the end of the protruding strip away from the cover; The second top surface has a protruding assembly plate, and the assembly plate has a slot, which engages with the card block.

9. The battery pack according to claim 8, characterized in that: The cover has a guide groove formed on its side, and the cover has a protruding strip at the end of the guide groove; The assembly plate is provided with guide protrusions, which form a clearance fit with the guide grooves.

10. The battery pack according to claim 1, characterized in that: In the first direction, the ratio of the minimum dimension of the mounting groove to the minimum dimension of the partition beam is between 0.03 and 0.

1.

11. The battery pack according to claim 1, characterized in that: Regarding the third direction, the ratio of the minimum size of the mounting groove to the minimum size of the partition beam is between 0.1 and 0.

3.

12. The battery pack according to claim 1, characterized in that: The ratio of the minimum dimension of the mounting groove in the first direction to the minimum dimension of the mounting groove in the third direction is between 0.5 and 2.

13. The battery pack according to claim 1, characterized in that: The second top surface extends from the second opening to form the mounting groove or the mounting hole is exposed from the second opening.

14. An electrical appliance, characterized in that, The battery pack includes any one of claims 1-13.

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