Battery pack and electric device

Abstract

The utility model provides a kind of battery pack and electric equipment, wherein battery pack, comprising: box, including frame and the partition beam being arranged in frame, partition beam will the internal space of frame be separated into at least two containing cavities, partition beam is provided with slot;Multiple battery groups, at least one battery group is provided in each containing cavity, and the top of battery in each battery group all has pole column;Conductive part, at least part of conductive part is located in slot, and conductive part is electrically connected with the pole column of each battery group by busbar.The technical scheme of the application effectively solves the problem that the conductive part needs to be separately arranged in the box in the related art, thereby additionally occupying the space in the box.

Description

Technical Field

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

[0002] In related technologies, the conductive components connecting the output terminals of the battery pack need to be separately housed within the casing, which occupies additional space within the casing and reduces the space available for installing the battery pack, thereby lowering the energy density of the battery device. Utility Model Content

[0003] The main purpose of this utility model is to provide a battery pack and electrical equipment to solve the problem in related technologies that conductive components need to be separately installed in the box, thereby occupying additional space in the box.

[0004] To achieve the above objectives, according to one aspect of the present invention, a battery pack is provided, comprising: a housing, including a frame and a partition beam disposed within the frame, the partition beam dividing the internal space of the frame into at least two receiving cavities, the partition beam having a slot; a plurality of battery packs, each receiving cavity containing at least one battery pack, each battery pack having a terminal post at its top; and a conductive element, at least a portion of which is located in the slot, the conductive element being electrically connected to the terminal post of each battery pack via a busbar.

[0005] According to another aspect of the present invention, an electrical device is provided, including a battery pack, wherein the battery pack is the aforementioned battery pack.

[0006] The battery pack, using the technical solution of this utility model, includes a housing, multiple battery packs, and conductive components. The housing includes a frame and a partition beam disposed within the frame. The partition beam divides the internal space of the frame into at least two accommodating cavities, and slots are provided on the partition beam. At least one battery pack is disposed in each accommodating cavity, and each battery pack has a terminal post at its top. At least a portion of the conductive components are located in the slots, and the conductive components are electrically connected to the terminals of each battery pack via busbars. Thus, by directly slotting the partition beams and placing at least a portion of the conductive components in the slots, the original partition beam structure of the housing is effectively utilized, and the conductive components do not need to occupy additional space within the housing, making more rational use of the internal space. Therefore, the technical solution of this application effectively solves the problem in related technologies where conductive components need to be separately disposed within the housing, thus occupying additional space. Furthermore, since the conductive components are electrically connected to the output terminals at the top of each battery pack, the sides of the battery packs can be attached to the partition beams, fully utilizing the internal space of the housing, and eliminating the need to consider insulation treatment for the electrical connection between the sides of the battery packs and the conductive components. Attached Figure Description

[0007] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0008] Figure 1 A perspective structural schematic diagram of an embodiment of the battery pack according to the present invention is shown;

[0009] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the battery pack after the end beam has been removed;

[0010] Figure 3 It shows Figure 2 An enlarged view of point A on the battery pack;

[0011] Figure 4 It shows Figure 2 A schematic diagram of the end side of the battery pack;

[0012] Figure 5 It shows Figure 4 An enlarged view of point B on the battery pack.

[0013] The above figures include the following reference numerals:

[0014] 10. Box body; 11. Frame; 111. First side beam; 112. Second side beam; 12. Divider beam; 121. Cavity; 13. Groove; 131. Slot; 14. Base plate;

[0015] 20. Battery pack;

[0016] 30. Conductive components. Detailed Implementation

[0017] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] According to one aspect of this application, a battery pack is provided, such as Figures 1 to 5 As shown, an embodiment of the battery pack includes: a housing 10, multiple battery packs 20, and conductive elements 30. The housing 10 includes a frame 11 and a partition beam 12 disposed within the frame 11. The partition beam 12 divides the internal space of the frame 11 into at least two receiving cavities, and a slot 13 is provided on the partition beam 12. At least one battery pack is disposed in each receiving cavity, and the top of each battery in each battery pack 20 has a terminal post. At least a portion of the conductive elements 30 is located in the slot 13, and the conductive elements 30 are electrically connected to the terminal posts of each battery pack 20 through a busbar.

[0021] In the technical solution of the battery pack embodiment, at least some of the conductive elements 30 are located in the slot 13. Thus, by directly creating the slot 13 on the partition beam 12 and placing at least some of the conductive elements 30 in the slot 13, the original structure of the partition beam 12 of the housing is effectively utilized. The conductive elements 30 do not need to occupy additional space within the housing, making more rational use of the space. Therefore, the technical solution of the battery pack embodiment effectively solves the problem in related technologies where conductive elements need to be separately placed within the housing, thus occupying additional space. Furthermore, since the conductive elements 30 are electrically connected to the output terminal at the top of each battery pack 20, the sides of the battery pack 20 can be attached to the partition beam 12, fully utilizing the space within the housing 10, without needing to consider the insulation treatment required for the electrical connection between the sides of the battery pack 20 and the conductive elements 30.

[0022] Specifically, the conductive component 30 is preferably a busbar. Multiple batteries in the battery pack are connected in series and parallel by welding the busbar to the terminals. The busbar has an output terminal that is electrically connected to the busbar. For example... Figures 3 to 5 As shown, the ratio A1 of the groove width W1mm of slot 13 and the thickness W2mm of partition beam 12 satisfies: 0.04≤A1≤0.4. By limiting the range of the ratio A1 of the groove width W1mm of slot 13 and the thickness W2mm of partition beam 12, it is possible to prevent A1 from being greater than 0.4, which would affect the structural strength of partition beam 12, and to prevent A1 from being less than 0.04, which would make it inconvenient to arrange conductive components 30. It should be noted that the groove width direction of slot 13 and the thickness direction of partition beam 12 are both on the width direction X of partition beam 12.

[0023] The ratio A1 of the groove width W1mm of the aforementioned slot 13 and the thickness W2mm of the partition beam 12 is preferably 0.04 or 0.05 or 0.06 or 0.07 or 0.08 or 0.09 or 0.10 or 0.11 or 0.12 or 0.13 or 0.14 or 0.15 or 0.16 or 0.17 or 0.18 or 0.19 or 0.20 or 0.21 or 0.22 or 0.23 or 0.24 or 0.25 or 0.26 or 0.27 or 0.28 or 0.29 or 0.30 or 0.31 or 0.32 or 0.33 or 0.34 or 0.35 or 0.36 or 0.37 or 0.38 or 0.39 or 0.40.

[0024] like Figures 3 to 5 As shown, the ratio A1 of the slot width W1mm of the slot 13 and the thickness W2mm of the partition beam 12 satisfies: 0.1≤A1≤0.3. By limiting the range of the ratio A1 of the slot width W1mm of the slot 13 and the thickness W2mm of the partition beam 12, it is possible to prevent the structural strength of the partition beam 12 from being affected when A1 is greater than 0.3, and to prevent the arrangement of the conductive component 30 from being inconvenient when A1 is less than 0.1.

[0025] like Figures 3 to 5 As shown, for ease of processing, a slot 13 is provided on the top of the partition beam 12, and the slot 13 has an upward-facing opening 131.

[0026] like Figures 3 to 5As shown, the width W1mm of the slot 13 is greater than or equal to 2mm and less than or equal to 20mm. This limitation on the range of slot width 13 prevents the slot width from exceeding 20mm, which would affect the structural strength of the partition beam 12, and prevents the slot width from being less than 2mm, which would make it difficult to arrange the conductive component 30. The preferred slot width W1mm is 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, or 20mm.

[0027] like Figures 3 to 5 As shown, the thickness W2mm is greater than or equal to 10mm and less than or equal to 50mm. This limitation on the thickness range of the partition beam 12 prevents the partition beam 12 from occupying too much space when the thickness is greater than 50mm, and prevents the partition beam 12 from having insufficient structural strength when the thickness is less than 10mm.

[0028] The thickness W2mm of the aforementioned partition beam 12 is preferably 10mm or 11mm or 12mm or 13mm or 14mm or 15mm or 16mm or 17mm or 18mm or 19mm or 20mm or 21mm or 22mm or 23mm or 24mm or 25mm or 26mm or 27mm or 28mm or 29mm or 30mm or 31mm or 32mm or 33mm or 34mm or 35mm or 36mm or 37mm or 38mm or 39mm or 40mm or 41mm or 42mm or 43mm or 44mm or 45mm or 46mm or 47mm or 48mm or 49mm or 50mm.

[0029] like Figures 3 to 5 As shown, in the height direction Z of the partition beam 12, the groove depth of the slot 13 is h1mm, and the distance between the bottom of the slot 13 and the bottom wall of the partition beam 12 is h2mm, where 0.1≤h1mm / h2mm≤0.6. This limitation of the h1mm / h2mm range prevents the structural strength of the partition beam 12 from being affected when h1mm / h2mm is greater than 0.6, and prevents the placement of the conductive component 30 from being inconvenient when h1mm / h2mm is less than 0.1.

[0030] The preferred h1mm / h2mm ratio is 0.1, 0.2, 0.3, 0.4, 0.5, or 0.6.

[0031] like Figures 3 to 5As shown, the groove depth h1mm of the slot 13 is greater than or equal to 10mm and less than or equal to 30mm. This limitation on the groove depth h1mm of the slot 13 prevents the groove depth from being greater than 30mm, which would affect the structural strength of the partition beam 12, and prevents the groove depth from being less than 10mm, which would make it inconvenient to arrange the conductive components 30.

[0032] The groove depth h1mm of the aforementioned slot 13 is preferably 10mm or 11mm or 12mm or 13mm or 14mm or 15mm or 16mm or 17mm or 18mm or 19mm or 20mm or 21mm or 22mm or 23mm or 24mm or 25mm or 26mm or 27mm or 28mm or 29mm or 30mm.

[0033] like Figures 3 to 5 As shown, the distance h2mm between the bottom of the slot 13 and the bottom wall of the partition beam 12 is greater than or equal to 50mm and less than or equal to 100mm. This limitation on the distance between the bottom of the slot 13 and the bottom wall of the partition beam 12 prevents the conductive element 30 from being difficult to arrange when the distance is greater than 100mm, and prevents the structural strength of the partition beam 12 from being affected when the distance is less than 50mm.

[0034] The distance h2mm between the bottom of the groove 13 and the bottom wall of the partition beam 12 is preferably 50mm or 51mm or 52mm or 53mm or 54mm or 55mm or 56mm or 57mm or 58mm or 59mm or 60mm or 61mm or 62mm or 63mm or 64mm or 65mm or 66mm or 67mm or 68mm or 69mm or 70mm or 71mm or 72mm or 73mm or 74mm or 75mm or 76mm or 77mm or 78mm or 79mm or 80mm or 81mm or 82mm or 83mm or 84mm or 85mm or 86mm or 87mm or 88mm or 89mm or 90mm or 91mm or 92mm or 93mm or 94mm or 95mm or 96mm or 97mm or 98mm or 99mm or 100mm.

[0035] like Figures 3 to 5 As shown, in order to ensure the uniformity of the overall strength of the partition beam 12, the center line of the slot 13 in the extension direction of the partition beam 12 is set to coincide with the center line L of the partition beam 12.

[0036] It should be noted that the extension direction of the partition beam 12 refers to the direction from the first end of the partition beam 12 to the second end of the partition beam 12. The centerline of the slot 13 in the extension direction of the partition beam 12 is a geometric line that bisects the width of the slot 13 and extends along the extension direction of the partition beam 12. The centerline L of the partition beam 12 refers to the geometric axis of symmetry that runs through the entire cross-section of the partition beam 12 along its length.

[0037] In other embodiments, the distance between the centerline of the slot 13 in the extension direction of the partition beam 12 and the centerline L of the partition beam 12 is greater than 0 mm and less than or equal to 5 mm. This avoids affecting the uniformity of the overall strength of the partition beam 12 when the distance between the centerline of the slot 13 in the extension direction of the partition beam 12 and the centerline of the partition beam 12 is greater than 5 mm.

[0038] The center line of the aforementioned slot 13 in the extension direction of the partition beam 12 is preferably 1mm, 2mm, 3mm, 4mm, or 5mm from the center line L of the partition beam 12.

[0039] like Figures 2 to 4 As shown, in order to make more efficient use of the space inside the box, the frame 11 includes a first side beam 111 and a second side beam 112 arranged opposite each other. The distance between the partition beam 12 and the first side beam 111 is equal to the distance between the partition beam 12 and the second side beam 112. The frame 11 also includes two end beams arranged opposite each other, which are respectively connected to the two ends of the first side beam 111 and the two ends of the second side beam 112.

[0040] like Figures 3 to 5 As shown, in order to improve the overall structural strength of the partition beam 12, multiple cavities 121 are provided inside the partition beam 12, and the multiple cavities 121 are located outside the slot 13.

[0041] like Figures 3 to 5 As shown, the housing 10 also includes a base plate 14 connected to the bottom of the frame 11. To facilitate fixing the partition beam to the base plate 14, the partition beam is connected to the base plate 14 by fasteners. The fasteners are preferably screws.

[0042] In this embodiment, the partition beam 12 includes a first side plate, a middle plate, and a second side plate arranged sequentially at intervals along the width direction of the frame 11. The partition beam 12 also includes multiple connecting plates connecting the first side plate and the middle plate, and between the middle plate and the second side plate. Multiple cavities 121 are formed between the multiple connecting plates, the first side plate, the middle plate, and the second side plate. The upper part of the middle plate is thicker than the lower part of the middle plate, and the upper part of the middle plate is thicker than the first side plate and the second side plate. A slot 13 is provided on the upper part of the middle plate. The partition beam 12 also includes a first outer folding plate connected to the outer wall of the first side plate and a second outer folding plate connected to the outer wall of the second side plate. The first outer folding plate and the second outer folding plate are respectively located between two adjacent battery packs 20.

[0043] To prevent the conductive component 30 from short-circuiting with other structures (such as the box cover), an insulating component is provided in the slot 13.

[0044] like Figures 3 to 5 As shown, the slot 13 has an upward-facing opening 131. In order to prevent the conductive element 30 from short-circuiting with other structures (such as the cover), the battery pack also includes an insulating element disposed at the opening 131.

[0045] like Figures 3 to 5 As shown, the battery pack also includes a cover mounted on the frame 11. To prevent the conductive element 30 from short-circuiting with the cover, an insulating element separates the cover from the conductive element 30.

[0046] like Figures 3 to 5 As shown, in order to effectively prevent the conductive component 30 from short-circuiting with the box cover, the two sides of the insulating component extend along the side wall of the slot 13 to the bottom of the slot.

[0047] In order for the insulating component to effectively perform its insulating function, the insulating component is one or more of the following materials: epoxy resin, polytetrafluoroethylene, or polyimide.

[0048] In this embodiment, the enclosure refers to a closed or semi-closed structure made of materials such as metal and plastic. It serves as the physical carrier of the battery pack, and its design and manufacturing must meet the safety, reliability, and functionality requirements of the battery pack under different usage scenarios. The enclosure provides installation space for the battery pack, BMS, cooling system, electrical connection components, etc., and through reasonable structural design, fixes these components inside the enclosure to ensure that they maintain a relatively stable position during battery pack operation, avoiding damage to components or loosening of connections due to vibration, impact, or other factors.

[0049] The materials / composition of the aforementioned enclosure:

[0050] (1) The box includes a lower box, including a bottom plate and a side plate connected to and surrounding the bottom plate; an upper box is connected to the side plate and has a cover plate opposite to the bottom plate. The upper box and the lower box together enclose a receiving chamber.

[0051] (2) The battery pack box is generally composed of an upper box and a lower box. The lower box generally has four side plates and a bottom plate. The four side plates can be integrally formed with the bottom plate or can be processed and formed by separate fixed connection.

[0052] (3) The housing may include a bottom and a cover plate, the bottom and the cover plate covering each other, and the bottom and the cover plate together defining a receiving space for accommodating the battery module.

[0053] (4) The box body can be cast from materials such as steel plate and aluminum alloy, or lightweight materials such as glass fiber reinforced composite material and carbon fiber reinforced composite material.

[0054] (5) The shape of the box can be a cylinder, cuboid, cube, etc.

[0055] The aforementioned frame refers to the frame structure of the battery pack housing, which serves to provide support, protection, and connection.

[0056] The material / composition of the aforementioned border:

[0057] (1) The frame can be formed by splicing multiple beams together.

[0058] (2) The frame includes four sub-frames, which are connected end to end to form an enclosed space. The enclosed space is closed by the top cover and the bottom plate to form a receiving cavity.

[0059] (3) The frame can be made of various materials, such as aluminum alloy, copper alloy, steel, plastic, etc.

[0060] (4) The border can be rectangular, circular, polygonal, etc., and there are no specific limitations. The interior of the border can be a solid structure or contain cavities.

[0061] The aforementioned partition beams are installed within the battery pack housing space and extend laterally or longitudinally to divide the housing space into multiple sub-spaces.

[0062] The materials / composition of the aforementioned partition beams:

[0063] The partition beam is fixedly connected to the side wall of the enclosure, and the partition beam divides the internal space of the enclosure into multiple sub-spaces, with at least two battery module assemblies respectively set in multiple sub-spaces.

[0064] The partition beam can be a strip structure, with its two ends in the first direction connected to the two first side walls of the box, so as to divide the box into two spaces located on both sides of the partition beam along the second direction.

[0065] The partition beams can be made of metal materials, such as aluminum, or they can be integrally molded using rubber injection molding, plastic injection molding, or molding injection molding. Plastic injection molding can use plastics such as polyethylene, polypropylene, ABS, PA, and polystyrene. The partition beams can be formed by die casting or other methods such as extrusion molding, and then welded together.

[0066] The aforementioned battery pack comprises multiple battery cells, which can be connected in series, parallel, or a combination of both to form a battery module. These battery modules can then be connected in series, parallel, or a combination of both to form a single unit. Multiple battery packs can be configured, such as four or eight, with no specific limitation. The battery pack is formed by connecting multiple battery cells of similar capacity and internal resistance in series or parallel. The battery pack may also include a housing, with one end open and connected to a heat exchange plate. The battery pack is housed within the housing.

[0067] The aforementioned battery pack includes a battery pack composed of multiple battery cells connected in series and / or in parallel to form a battery management system (BMS), a thermal management system, an electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.), and protective components. All of these components are placed inside a housing and sealed with a cover plate to form a complete functional unit that can directly output electrical energy.

[0068] (2) Battery packs, as a type of rechargeable battery, are the power source for new energy vehicles.

[0069] The materials / composition of the battery pack mentioned above:

[0070] (1) A battery pack generally includes a cell module, a battery management system (BMS) control module, and a housing that contains the cell module and the BMS control module.

[0071] (2) The battery pack includes a housing and multiple individual batteries housed in the housing. The housing is divided into upper and lower parts, which are sealed together.

[0072] (3) The battery pack includes at least two battery cells, a BMS control assembly and a casing.

[0073] (4) A battery pack generally includes a battery box and a battery module. The battery box includes a lower box and an upper cover.

[0074] (5) A battery pack generally includes a housing, battery cells and a separator. Both the battery cells and the separator are located in the housing. The separator is located on the side of the battery cell away from the bottom wall of the housing, separating the battery cell from other devices located above the battery cell, thus playing a role in isolation.

[0075] The aforementioned battery cells can be secondary or primary batteries, and can also be lithium-ion batteries, lithium-sulfur batteries, sodium-ion batteries, or magnesium-ion batteries, etc., but this embodiment of the invention is not limited to these. Battery cells can be cylindrical, flat, cuboid, or other shapes, etc., but this embodiment of the invention is not limited to these shapes either. Battery cells are generally classified into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, but this embodiment of the invention is not limited to these types either.

[0076] For example, a battery cell may include a casing, a cell, and an electrolyte, with the casing housing the cell and electrolyte. The cell also includes a separator. A battery cell primarily functions by the movement of metal ions between the positive and negative electrodes.

[0077] The battery cell may have terminals or other components connected to adapters, with the terminals serving as the electrical connection points. Furthermore, the battery cell typically includes a pressure relief section. In the event of excessive internal pressure (e.g., thermal runaway), this section releases substances (e.g., gases, liquids, particulate matter) from the cell's interior, reducing internal pressure and preventing rapid pressurization that could lead to dangerous accidents such as cell explosions. For example, the pressure relief section can be an explosion-proof valve or explosion-proof plate. The adapter is preferably a connecting plate, and preferably a conductive structure. Any adjacent positive and negative electrodes are separated by a diaphragm.

[0078] The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector without the positive active material layer protrudes from the positive current collector with the positive active material layer. The positive current collector without the positive active material layer serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc.

[0079] The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The negative current collector without the negative active material layer protrudes from the negative current collector with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0080] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure. A wound cell is generally manufactured by winding continuous positive and negative electrodes and a separator, with the separator located between adjacent positive and negative electrodes. A stacked cell is manufactured by stacking positive and negative electrodes and a separator, where the positive and negative electrodes are separated by a separator, and adjacent layers of positive and / or negative electrodes within the cell are discontinuous. The stacking process includes layering or Z-shaped folding, etc. The embodiments of this application are not limited to these.

[0081] According to another aspect of this application, an electrical device is provided, an embodiment of which includes a battery pack, the battery pack being the aforementioned battery pack. The battery pack is capable of providing electrical energy to the electrical device. Since the aforementioned battery pack can solve the problem in related technologies where conductive components need to be separately housed within a casing, thereby occupying additional space within the casing, the electrical device including this battery pack can also solve the same technical problem.

[0082] The electrical equipment disclosed in this utility model embodiment can be, but is not limited to, vehicles, mobile phones, tablets, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be fuel-powered vehicles, natural gas vehicles, new energy vehicles, or rail vehicles; new energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. When the electrical equipment is a vehicle, the battery pack can be located at the bottom, front, or rear of the vehicle.

[0083] In the description of this utility model, it should be understood that "multiple" means a quantity of two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0084] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0085] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0086] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack, characterized in that, include: The box (10) includes a frame (11) and a partition beam (12) disposed within the frame (11). The partition beam (12) divides the internal space of the frame (11) into at least two receiving cavities. The partition beam (12) is provided with a slot (13). Multiple battery packs (20), each of the receiving cavities is provided with at least one of the battery packs, and each battery in each battery pack (20) has a terminal post on its top; A conductive element (30), at least a portion of which is located in the slot (13), is electrically connected to the terminal of each of the battery packs (20) via a busbar.

2. The battery pack according to claim 1, characterized in that, The slot (13) is provided on the top of the partition beam (12), and the slot (13) has an upward-facing opening (131).

3. The battery pack according to claim 1, characterized in that, The ratio A1 of the width of the slot (13) and the thickness of the partition beam (12) satisfies: 0.04≤A1≤0.

4.

4. The battery pack according to claim 1, characterized in that, The ratio A1 of the width of the slot (13) and the thickness of the partition beam (12) satisfies: 0.1≤A1≤0.

3.

5. The battery pack according to claim 3, characterized in that, The groove width W1mm of the slot (13) is greater than or equal to 2mm and less than or equal to 20mm.

6. The battery pack according to claim 3, characterized in that, The thickness W2mm of the partition beam (12) is greater than or equal to 10mm and less than or equal to 50mm.

7. The battery pack according to claim 1, characterized in that, In the height direction (Z) of the partition beam (12), the groove depth of the slot (13) is h1mm, and the distance between the bottom of the slot (13) and the bottom wall of the partition beam (12) is h2mm, wherein 0.1≤h1mm / h2mm≤0.

6.

8. The battery pack according to claim 7, characterized in that, The groove depth h1mm of the slot (13) is greater than or equal to 10mm and less than or equal to 30mm.

9. The battery pack according to claim 7, characterized in that, The distance h2mm between the bottom of the slot (13) and the bottom wall of the partition beam (12) is greater than or equal to 50mm and less than or equal to 100mm.

10. The battery pack according to claim 1, characterized in that, The slot (13) is positioned such that its centerline in the extension direction of the partition beam (12) coincides with the centerline L of the partition beam (12).

11. The battery pack according to claim 1, characterized in that, The distance between the centerline of the slot (13) in the extension direction of the partition beam (12) and the centerline L of the partition beam (12) is greater than 0 mm and less than or equal to 5 mm.

12. The battery pack according to claim 1, characterized in that, The frame (11) includes a first side beam (111) and a second side beam (112) arranged opposite to each other, and the distance between the partition beam (12) and the first side beam (111) is equal to the distance between the partition beam (12) and the second side beam (112).

13. The battery pack according to claim 1, characterized in that, The partition beam (12) is provided with a plurality of cavities (121), and the plurality of cavities (121) are located outside the slot (13).

14. The battery pack according to claim 13, characterized in that, The housing (10) also includes a base plate (14) connected to the bottom of the frame (11), and the partition beam (12) is connected to the base plate (14) by fasteners.

15. The battery pack according to claim 1, characterized in that, An insulating component is provided inside the slot (13).

16. The battery pack according to claim 1, characterized in that, The slot (13) has an upwardly facing opening (131), and the battery pack also includes an insulating element disposed at the opening (131).

17. The battery pack according to claim 15, characterized in that, The battery pack also includes a cover on the frame (11), and the insulating element isolates the cover from the conductive element (30).

18. The battery pack according to claim 17, characterized in that, The insulating component extends along the side wall of the slot (13) to the bottom of the slot (13) on both sides.

19. The battery pack according to claim 15, characterized in that, The insulating component is one or more of epoxy resin material, polytetrafluoroethylene material, or polyimide material.

20. An electrical device, comprising a battery pack, characterized in that, The battery pack is the battery pack according to any one of claims 1 to 19.

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