Battery pack and electric equipment

Abstract

The embodiment of the utility model discloses a battery pack and electric equipment, and belongs to the technical field of batteries, a shell of a battery pack safety assembly is arranged outside a battery pack box body, so that the maintenance and replacement difficulty is reduced, and the air tightness of the battery pack box body can be kept. The connecting piece is arranged into a structure that the first connecting part and the second connecting part are connected with each other, the first connecting part is electrically connected with the fuse, and the second connecting part extends from the first connecting part to the box body and penetrates into the box body to be electrically connected with the battery assembly, so that the fuse and the battery assembly can be electrically connected; the safety of the battery assembly is guaranteed, and the structure of the connecting piece is simpler. According to the battery pack, the second connecting part is arranged to be in the flat plate shape, so that the space occupation of the second connecting part can be effectively reduced, the connecting piece is smaller, the safety assembly can be smaller, and the volume energy density and the space applicability of the battery pack can be improved.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and specifically relates to a battery pack and electrical equipment. Background Art

[0002] The battery pack fuse is usually installed inside the battery pack box. When the fuse fails and needs to be replaced, the battery pack cover and internal related structural parts need to be removed before replacement can be carried out. This makes replacement more troublesome and easily causes the airtight performance of the PACK to deteriorate. Utility Model Content

[0003] Purpose of the utility model: An embodiment of the present application provides a battery pack, aiming to solve the current technical problem of the troublesome replacement of the fuse assembly; another purpose of the embodiment of the present application is to provide an electrical device.

[0004] Technical solution: A battery pack according to an embodiment of the present application includes a box, a battery assembly, and a fuse assembly. The battery assembly is disposed in the box, and the fuse assembly includes:

[0005] A housing, disposed outside the box and connected to the box;

[0006] a fuse, disposed in the housing;

[0007] The connecting part includes a first connecting part and a second connecting part; the first connecting part is arranged in the shell and is electrically connected to the fuse and the second connecting part respectively; the second connecting part is flat, extending from the first connecting part toward the box body and passing through the box body, and the second connecting part is electrically connected to the battery assembly.

[0008] In some embodiments, the battery pack has a first direction and a second direction intersecting each other, and the second connecting portion extends along the first direction;

[0009] The insurance assembly includes a plurality of fuses, which are arranged along the second direction. The first connecting portion extends along the second direction and is electrically connected to each fuse.

[0010] In some embodiments, the fuse is provided with a connecting terminal, and the connecting terminal is electrically connected to the first connecting portion;

[0011] The insurance component further includes a covering portion, which covers the connecting terminal and at least a portion of the first connecting portion to fix the connecting terminal to the first connecting portion; and / or, the connecting terminal is fixedly connected to the first connecting portion by a bolt.

[0012] In some embodiments, the insurance component further comprises:

[0013] The first sealing member is provided between the shell and the box body, and the shell is sealed and connected to the box body through the first sealing member.

[0014] In some embodiments, the housing comprises:

[0015] A main body having a receiving cavity, wherein the fuse and the first connecting portion are arranged in the receiving cavity;

[0016] a cover body connected to the body and covering the accommodating cavity;

[0017] The second sealing member is provided between the body and the cover, and the body is sealed and connected to the cover through the second sealing member.

[0018] In some embodiments, the main body is provided with a first sealing groove toward the cover body, and the second sealing member is embedded in the first sealing groove and protrudes out of the first sealing groove to be connected to the cover body.

[0019] In some embodiments, the housing further comprises:

[0020] The flange portion is arranged around the connection between the main body and the cover body and is connected to the cover body.

[0021] In some embodiments, the second connecting portion has a connecting hole provided therethrough, and the second connecting portion further includes a rivet nut and / or a threaded sleeve provided in the connecting hole, and the second connecting portion is electrically connected to the battery assembly through the rivet nut and / or the threaded sleeve.

[0022] In some embodiments, the insurance component further comprises:

[0023] The reinforcing ribs are at least arranged on the inner wall of the shell facing away from the box body.

[0024] Accordingly, an embodiment of the present application provides an electrical device, comprising the battery pack described in any of the above embodiments.

[0025] Beneficial Effects: In the embodiments of the present application, by positioning the housing of the battery pack fuse assembly outside the battery pack case, when the fuse in the fuse assembly fails, the fuse inside the housing can be maintained and replaced by simply opening the housing, without disassembling the battery pack case. This not only reduces the difficulty of maintenance and replacement, but also improves operational efficiency and maintains the airtightness of the battery pack case, thereby ensuring battery pack performance. By configuring the connector as a first connecting portion and a second connecting portion interconnected, with the first connecting portion disposed within the housing and electrically connected to the fuse, and the second connecting portion extending from the first connecting portion toward the case and extending through the case to electrically connect to the battery assembly, electrical interconnection between the fuse and the battery assembly is achieved, ensuring battery pack safety. This also simplifies the connector structure, reduces its space usage, and facilitates miniaturization of the fuse assembly. The flat second connecting portion effectively reduces its space usage, making the connector smaller and the fuse assembly smaller, thereby improving the volumetric energy density of the battery pack and the spatial adaptability of the battery pack, allowing it to fit into smaller installation spaces.

[0026] The electrical equipment of the embodiment of the present application may include all the technical features and beneficial effects of the above-mentioned battery pack, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic side view of a battery pack according to some embodiments of the present application;

[0029] Figure 2 A schematic diagram of the three-dimensional structure of a battery pack provided in some embodiments of the present application;

[0030] Figure 3 Schematic diagram of exploded parts of a battery pack provided in some embodiments of the present application;

[0031] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure of area A in the middle;

[0032] Figure 5 This is a schematic diagram of the structure of the insurance component in some embodiments of the present application;

[0033] Figure 6 This is an exploded schematic diagram of parts of a fuse assembly in some embodiments of the present application;

[0034] Figure 7 This is a schematic structural diagram of a connector in some embodiments of the present application;

[0035] Figure 8 This is a schematic structural diagram of a connector in some embodiments of the present application;

[0036] Figure 9 This is a schematic diagram of the connection structure of the connector and the fuse in some embodiments of the present application;

[0037] Figure 10 A schematic diagram of a partial cross-sectional structure of a battery pack provided in some embodiments of the present application;

[0038] Figure 11 for Figure 10 Schematic diagram of the local enlarged structure of area B in the middle;

[0039] Figure 12 This is a schematic diagram of the main structure of the housing in some embodiments of the present application;

[0040] Figure 13 This is a schematic structural diagram of the main body of the housing from another perspective in some embodiments of the present application;

[0041] Figure 14 This is a schematic diagram of the cover structure of the housing in some embodiments of the present application;

[0042] Figure 15 This is a structural schematic diagram of the cover of the housing from another perspective in some embodiments of the present application;

[0043] Figure markings: 100-box; 110-inner cavity; 200-fuse assembly; 210-shell; 211-main body; 2111-accommodating cavity; 2112-first sealing groove; 2113-second sealing groove; 2114-second assembly groove; 2115-inner wall; 212-cover; 213-flanged portion; 220-fuse; 221-connecting terminal; 230-connecting piece; 231-first connecting portion; 2311-first side; 232-second connecting portion; 240-bolt; 250-first sealing piece; 260-second sealing piece; 270-reinforcement rib; 280-covering portion; 300-electrode assembly. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "inner," and "outer" and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting this application. The term "plurality" means two or more, and at least one means one, two, or more, unless otherwise specifically defined. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, to mean fixed, removable, or integral; directly or indirectly through an intermediary; or to mean internal communication between two components or an interaction between two components. The terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or to implicitly specify the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features.

[0046] In the description of the present application, the first direction X and the second direction Y are introduced to more clearly describe the shape and / or structure of each component in the battery pack, as well as the connection relationship and / or relative position relationship between the components. The first direction X is the arrangement direction of the shell 210 and the box body 100. The second direction Y intersects with the first direction X. Optionally, the second direction Y and the first direction X are perpendicular to each other. The perpendicularity here refers to completely perpendicular or almost completely perpendicular. For example, the angle between the second direction Y and the first direction X is considered perpendicular within the range of 90±5°. In the accompanying drawings, the arrow marked X indicates the first direction X, and the arrow marked Y indicates the second direction Y. It can be understood that the first direction X and the second direction Y can also be the opposite directions of the directions indicated by the corresponding arrows.

[0047] Please also refer to Figure 1 and Figure 2 The embodiment of the present application provides a battery pack, which includes a box body 100, a battery assembly 300 and a fuse assembly 200, wherein the battery assembly 300 is arranged inside the box body 100 and is not in the Figure 1 and Figure 2 It is shown in the figure, which can be combined with the attached Figure 10 , the description of the embodiments of the present application and the related technologies of the battery pack are used to understand the battery assembly 300.

[0048] The case 100 is the outer shell structure used to wrap the battery assembly 300 in the battery pack. It is surrounded by an inner cavity, and the battery assembly 300 is accommodated in the inner cavity of the case 100 to provide protection and support through the case 100. Specifically, the case 100 wraps the battery assembly 300 to provide physical protection for the battery assembly 300, preventing the battery assembly 300 from being damaged, vibrated, impacted, and other adverse effects of the external environment. The case 100 can also isolate the battery assembly 300 from other external components or environments of the electrical equipment, providing a certain degree of electrical and safety isolation. Moreover, as a structural frame, the case 100 can also support and fix the battery assembly 300 inside it, maintaining the stability of the position of the battery assembly 300 and effectively dissipating and absorbing external impact forces. In addition, the case 100 can also play a role in heat dissipation and thermal management. Heat dissipation channels and / or heat sinks can be set on it to help discharge the heat generated by the battery assembly 300 to maintain a suitable operating temperature range.

[0049] The battery assembly 300 is the energy storage structure of the battery pack, which can be composed of a plurality of single cells. Specifically, a plurality of single cells are arranged in a regular pattern in the inner cavity of the box body 100 and are electrically connected to form an overall energy storage structure, which can be referred to as a battery assembly 300. For example, the battery assembly 300 may include single cells, connecting plates, insulating materials, etc. Single cells are the basic energy storage units in the battery assembly 300, including lithium-ion batteries, nickel-metal hydride batteries, etc. Connecting plates are used to connect multiple single cells to form a series or parallel energy storage structure. The connecting plates are usually made of conductive materials and are responsible for the conduction and distribution of current. Insulating materials are used to isolate and protect single cells and connecting plates to prevent short circuits and electrical contact.

[0050] The fuse assembly 200 is a safety device for the battery pack. Its function is to promptly disconnect the circuit when an abnormal condition occurs in the battery pack, such as overcharge, overdischarge, overcurrent, or short circuit, to protect the battery and related equipment. For example, in some embodiments, when the current in the battery pack exceeds the designed or rated value, the fuse assembly 200 can protect the battery and related equipment by disconnecting the circuit, providing overload protection. In the event of a short circuit, the fuse assembly 200 can disconnect the circuit, preventing high current from passing through the battery assembly 300 and related connecting lines, thereby preventing fire and other safety risks and providing short-circuit protection.

[0051] Please combine Figure 3 、 Figure 4 、 Figure 5 and Figure 6 In the embodiment of the present application, the fuse assembly 200 includes a housing 210 , a fuse 220 and a connector 230 .

[0052] The shell 210 is the outer shell structure of the insurance assembly 200 and can be used to support and protect other components inside the insurance assembly 200 . The shell 210 is disposed outside the box body 100 and is connected to the box body 100 .

[0053] The fuse 220 is arranged inside the shell 210. The fuse 220 is the main component in the insurance component 200 that can achieve electrical protection. It is used to interrupt the circuit. For example, when the current exceeds the rated current value of the fuse 220, the fuse in the fuse 220 will melt or the electronic components in the fuse will disconnect the circuit, cutting off the flow of current, thereby interrupting the circuit to achieve electrical protection.

[0054] Part of the structure of the connector 230 is arranged in the shell 210, and the other part passes through the box 100. The connector 230 electrically connects the fuse 220 and the battery assembly 300. The connector 230 is a connection structure between the fuse 220 and the battery assembly 300, and is used to electrically connect the fuse 220 and the battery assembly 300 to form a protection circuit for the battery assembly 300. Optionally, the connector 230 can be made of copper or other conductive materials. Two or more connectors 230 can be set in the fuse assembly 200, and each connector 230 corresponds to a connection terminal 221 of the fuse 220, so that the fuse 220 can be electrically connected to the battery assembly 300 through two connectors 230.

[0055] When the fuse 220 in the battery pack fails, the fuse 220, located inside the housing 210, can be maintained and replaced simply by opening the housing 210, without disassembling the battery pack case 100. This not only simplifies the maintenance and replacement of the fuse 220 but also improves operational efficiency. It also maintains the airtightness of the battery pack case 100, safeguarding the battery pack's performance.

[0056] The connector 230 includes a first connecting portion 231 and a second connecting portion 232. The first connecting portion 231 is disposed within the housing 210 and is electrically connected to the fuse 220 and the second connecting portion 232, respectively. The second connecting portion 232 extends from the first connecting portion 231 toward the housing 100 and penetrates into the housing 100. The second connecting portion 232 is electrically connected to the battery assembly 300, thereby electrically interconnecting the fuse 220 and the battery assembly 300, thereby ensuring the safety of the battery assembly 300. Furthermore, the second connecting portion 232 of the connector 230 extends directly from the first connecting portion 231 toward one side of the housing 100, passing through the housing 210 and into the housing 100, simplifying the structure of the connector 230 and reducing the space occupied by the connector 230.

[0057] In addition, the second connecting portion 232 is in the shape of a plate, where the plate-like shape refers to a structure with a flat, thin and straight appearance and shape. The plate-like structure is usually composed of a plane or a nearly plane surface, without obvious bends or folds. In other words, the shape of the second connecting portion 232 is similar to a straight plate-like structure, and its various surfaces are planes or nearly planes, without obvious bends or folds. By setting the second connecting portion 232 to a flat plate shape, the space occupied by the second connecting portion 232 can be further effectively reduced, making the volume of the connector 230 smaller, so that the fuse assembly 200 can be made smaller, which helps to improve the volume energy density of the battery pack, and also helps to improve the spatial applicability of the battery pack, so that it can adapt to a smaller installation space.

[0058] In some embodiments, the second connecting portion 232 includes a connecting surface 2323 that connects to the first connecting portion 231 and the battery assembly 300, respectively. The flatness of the connecting surface 2323 is L, satisfying the following: L ≤ 0.2 mm. This configuration makes the second connecting portion 232 flatter, further reducing the space occupied by the second connecting portion 232. This can leave more space for the battery pack casing 100, increase the internal space of the casing 100, and allow more single cells to be installed in the battery assembly 300, thereby helping to increase the volumetric energy density of the battery pack.

[0059] It should be noted that, in the related art, a copper busbar is generally bent to form a connection structure for connecting the fuse 220 and the battery assembly 300. This method will produce a bending chamfer, and the bending radius at the bending chamfer position is greater than the thickness of the copper busbar, resulting in the bending chamfer position requiring more space. In addition, this method causes the bent connection part to be a curved plate-like structure rather than a flat plate, and has a large flatness, which increases the space occupied by the connection structure.

[0060] The flatness L of the connecting surface 2323 of the second connecting portion 232 can be any value selected from the group consisting of 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.10 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, and 0.2 mm, or a range between any two of these values. Controlling the flatness L of the connecting surface 2323 within this range makes the second connecting portion 232 flatter, effectively reducing the space occupied by the second connecting portion 232, making the connector 230 smaller, and thus enabling a smaller fuse assembly 200. Within this range, the smaller the flatness L, the flatter the second connecting portion 232, and the smaller the space occupied, thereby saving more space.

[0061] The flatness L of the connection surface 2323 can be measured using a variety of methods. For example, an optical projector can be used to measure flatness. The optical projector projects a projection of the connection surface 2323, and the flatness L is measured based on the degree of overlap between the projected image and the template. For another example, a plane leveler, a coordinate measuring machine, a surface measuring instrument, or other equipment can be used to measure flatness L. The specific method can be selected based on needs and actual conditions.

[0062] In some embodiments, the first connection portion 231 and the second connection portion 232 can be connected together by welding. Specifically, the second connection portion 232 can be welded to the first side surface 2311 of the first connection portion 231 that faces the housing 100. The second connection portion 232 can be welded to any position on the first side surface 2311 as needed, for example, against the edge of the first side surface 2311, or at the center of the first side surface 2311, or at any position between the edge and the center. Alternatively, the second connection portion 232 can be welded to the circumferential side surface of the first connection portion 231.

[0063] In some embodiments, the first connection portion 231 and the second connection portion 232 can be integrally processed into an integrated structure. For example, the first connection portion 231 and the second connection portion 232 can be integrally processed from the same piece of material by casting, forging, die-casting, injection molding, etc.

[0064] Please also refer to Figure 6 、 Figure 7 、 Figure 8 and Figure 9 In some embodiments, the second connection portion 232 extends along the first direction X, passes through the housing 210, and extends into the box 100. The fuse assembly 200 includes a plurality of fuses 220, which are arranged along the second direction Y. The first connection portion 231 extends along the second direction Y and is electrically connected to each fuse 220. In this way, the first connection portion 231 and the second connection portion 232 can be connected to form a roughly "L" shape or a "T" shape. In order to match the relative positions of the multiple fuses 220 and the battery assembly 300, for the structure in which multiple fuses 220 are connected in parallel, the spatial layout is more reasonable, further reducing space occupancy.

[0065] Please refer again Figure 7 and Figure 8In some embodiments, the second connecting portion 232 has a connecting hole 2324 extending through the connecting surface 2323. The second connecting portion 232 further includes a rivet nut 2321 and / or a threaded sleeve 2322 disposed in the connecting hole 2324. The second connecting portion 232 is electrically connected to the battery assembly 300 via the rivet nut 2321 and / or the threaded sleeve 2322. The provision of the rivet nut 2321 and / or the threaded sleeve 2322 can further strengthen the connection between the second connecting portion 232 and the battery assembly 300, thereby improving the stability of the fuse assembly 200 and the strong electrical connection.

[0066] Please refer again Figure 9 In some embodiments, the fuse 220 is provided with a connecting terminal 221, which is a component for the fuse 220 to be connected to the circuit, and the connecting terminal 221 is used to be electrically connected to the first connecting portion 231. The fuse assembly 200 also includes a covering portion 280, which covers at least a portion of the connecting terminal 221 and the first connecting portion 231 to fix the connecting terminal 221 to the first connecting portion 231. Specifically, the connecting terminal 221 and at least a portion of the first connecting portion 231 can be covered by the covering portion 280 by in-mold injection molding. On the one hand, it can ensure the connection strength between the connecting terminal 221 and the first connecting portion 231, and on the other hand, it can play a protective role, reducing the risks of leakage, short circuit, etc. caused by contact between the connecting terminal 221 and other components.

[0067] In some embodiments, the connection terminal 221 is fixedly connected to the first connection portion 231 via a bolt 270. Specifically, bolt holes are provided on the connection terminal 221 and the first connection portion 231, and the bolts 270 are passed through the bolt holes to securely connect the two. This method simplifies processing and saves processing costs.

[0068] In some embodiments, after the connection terminal 221 and the first connection portion 231 are connected and fixed with bolts 270, the covering portion 280 can be used to cover at least part of the connection terminal 221 and the first connection portion 231, thereby further improving the stability of the connection and the safety of the circuit.

[0069] Please also refer to Figure 4 、 Figure 5 and Figure 6 In some embodiments, the fuse assembly 200 further includes a first seal 250 disposed between the housing 210 and the box 100. The housing 210 is sealed to the box 100 via the first seal 250. This ensures the sealing performance between the housing 210 and the box 100 and reduces the risk of airtightness degradation caused by the second connection portion 232 penetrating the box 100.

[0070] Optional, please combine Figure 6 and Figure 10 A second sealing groove 2113 is opened on the side of the shell 210 facing the box body 100, and the first sealing member 250 is embedded in the second sealing groove 2113 and protruded toward the box body 100 to seal the connection with the box body 100. This can ensure the assembly stability of the first sealing member 250 and improve the sealing effect.

[0071] Please refer again Figure 5 and Figure 6 In some embodiments, a second assembly groove 2114 can be provided on the side of the housing 210 facing the box body 100, and the second connecting portion 232 can pass through the second assembly groove 2114 to pass out of the housing 210 and pass through the box body 100. Optionally, a groove structure protruding toward the box body 100 can be provided at the second assembly groove 2114, and the groove structure can be embedded in the through hole of the box body 100 for the second connecting portion 232 to pass through, so as to improve the stability and sealing of the connection between the housing 210 and the box body 100.

[0072] Please refer again Figure 4 and Figure 6 In some embodiments, the housing 210 includes a body 211, a cover 212, and a second sealing member 260. The body 211 has a receiving cavity 2111, within which the fuse 220 and the first connecting portion 231 are disposed. The cover 212 is connected to the body 211 and seals the receiving cavity 2111. The second sealing member 260 is disposed between the body 211 and the cover 212, and the body 211 is sealed to the cover 212 via the second sealing member 260. By configuring the housing 210 as a connection structure between the body 211 and the cover 212, when a malfunction occurs in the fuse 220, the fuse 220 disposed within the body 211 can be maintained or replaced simply by opening the cover 212, further improving operational efficiency. Furthermore, by providing the second sealing member 260 between the body 211 and the cover 212, the sealing connection between the body 211 and the cover 212 is improved, further ensuring the airtightness of the battery pack.

[0073] Please combine Figure 11 and Figure 12 In some embodiments, the body 211 defines a first sealing groove 2112 facing the cover 212. The second sealing member 260 is embedded in the first sealing groove 2112 and protrudes out of the first sealing groove 2112 to connect with the cover 212. This ensures the assembly stability of the second sealing member 260 and improves the sealing effect.

[0074] In some embodiments, the first sealing member 250 and the second sealing member 260 may be provided simultaneously to form a double seal to ensure the airtightness of the battery pack.

[0075] Please refer again Figure 10and Figure 11 In some embodiments, the housing 210 further includes a flange portion 213, which is disposed around the connection between the body 211 and the cover 212 and is connected to the cover 212. The flange portion 213 can, on the one hand, increase the strength of the cover 212, and on the other hand, shield the connection between the body 211 and the cover 212 by the flange portion 213, thereby preventing foreign matter from directly falling onto the sealing surface between the body 211 and the cover 212, thereby protecting the sealing performance of both.

[0076] Please also refer to Figure 12 、 Figure 13 、 Figure 14 and Figure 15 In some embodiments, the fuse assembly 200 further includes a reinforcing rib 240, which is disposed at least on the inner wall 2115 of the housing 210 facing away from the box 100. This reinforces the connection between the housing 210 and the box 100, increases the stability of the connection between the housing 210 and the box 100, improves the impact resistance of the fuse assembly 200, and ensures the overall structural strength of the battery pack.

[0077] Optionally, reinforcing ribs 240 may also be provided on the surface of the cover 212 facing the body 211 and / or the surface facing away from the body 211 to enhance the strength of the cover 212, thereby enhancing the overall strength of the shell 210 and further improving the overall structural strength and connection stability of the battery pack.

[0078] Accordingly, an embodiment of the present application provides an electrical device, which can be various types of equipment such as new energy vehicles, computers, energy storage and power supply devices, etc. It can be understood that the electrical device can include all the technical features and beneficial effects of the above-mentioned battery pack, which will not be repeated here.

[0079] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The above is a detailed introduction to the battery pack and electrical equipment provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, characterized in that: It includes a box, a battery assembly and a fuse assembly, wherein the battery assembly is arranged in the box, and the fuse assembly includes: A housing, disposed outside the box and connected to the box; a fuse, disposed in the housing; The connecting part includes a first connecting part and a second connecting part; the first connecting part is arranged in the shell and is electrically connected to the fuse and the second connecting part respectively; the second connecting part is flat, extending from the first connecting part toward the box body and passing through the box body, and the second connecting part is electrically connected to the battery assembly.

2. The battery pack according to claim 1, wherein: The battery pack has a first direction and a second direction intersecting each other, and the second connecting portion extends along the first direction; The insurance assembly includes a plurality of fuses, which are arranged along the second direction. The first connecting portion extends along the second direction and is electrically connected to each fuse.

3. The battery pack according to claim 1 or 2, characterized in that: The fuse is provided with a connecting terminal, and the connecting terminal is electrically connected to the first connecting portion; The insurance component further includes a covering portion, which covers the connecting terminal and at least a portion of the first connecting portion to fix the connecting terminal to the first connecting portion; and / or, the connecting terminal is fixedly connected to the first connecting portion by a bolt.

4. The battery pack according to claim 1, wherein: The insurance component also includes: The first sealing member is provided between the shell and the box body, and the shell is sealed and connected to the box body through the first sealing member.

5. The battery pack according to claim 1 or 4, characterized in that: The housing comprises: A main body having a receiving cavity, wherein the fuse and the first connecting portion are arranged in the receiving cavity; a cover body connected to the body and covering the accommodating cavity; The second sealing member is provided between the body and the cover, and the body is sealed and connected to the cover through the second sealing member.

6. The battery pack according to claim 5, characterized in that: The main body is provided with a first sealing groove toward the cover body. The second sealing member is embedded in the first sealing groove and protrudes out of the first sealing groove to be connected with the cover body.

7. The battery pack according to claim 5, characterized in that: The housing further comprises: The flange portion is arranged around the connection between the main body and the cover body and is connected to the cover body.

8. The battery pack according to claim 1, wherein: The second connecting portion has a connecting hole provided therethrough, and further comprises a rivet nut and / or a threaded sleeve provided in the connecting hole, and the second connecting portion is electrically connected to the battery assembly via the rivet nut and / or the threaded sleeve.

9. The battery pack according to claim 1, wherein: The insurance component also includes: The reinforcing ribs are at least arranged on the inner wall of the shell facing away from the box body.

10. An electrical device, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 9.

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