Battery pack and electric device

Abstract

The utility model discloses a battery pack and a power utilization device, the battery pack comprises a box body, a single battery, a wiring terminal and a flexible insulating part, the box body is provided with an accommodating cavity, the single battery is arranged in the accommodating cavity, the wiring terminal is arranged in the accommodating cavity and is conductively connected with the single battery, and the flexible insulating part is arranged in the accommodating cavity and is connected with the wiring terminal; the flexible insulating part comprises a protection part, a first fixing part and a second fixing part, the protection part is arranged on one side of the wiring terminal and at least partially attached to the wiring terminal, the first fixing part is connected with the protection part, and the second fixing part is connected to the side, away from the first fixing part, of the protection part; wherein the first fixing part and the second fixing part are arranged around the wiring terminal, and the second fixing part is connected with the first fixing part. According to the battery pack, by arranging the flexible insulating part, the exposed metal part of the wiring terminal can be wrapped, so that the insulativity of the wiring terminal is effectively improved, the safety of the battery pack is further improved, and potential safety hazards are effectively avoided.

Description

Technical Field

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

[0002] In a power battery pack, multiple cells are connected in series or parallel to achieve input and output, resulting in higher voltages at the corresponding connection terminals. High-voltage terminals often have exposed metal parts, posing a significant safety hazard if not promptly protected. Utility Model Content

[0003] Purpose of the utility model: An embodiment of the present application provides a battery pack, aiming to solve the problem of safety hazards caused by the exposure of existing high-voltage terminals; another purpose of an embodiment of the present application is to provide an electrical device.

[0004] Technical solution: A battery pack described in an embodiment of the present application includes a case, a single cell, a wiring terminal and a flexible insulating member, the case having a accommodating cavity, the single cell being arranged in the accommodating cavity, the wiring terminal being arranged in the accommodating cavity and conductively connected to the single cell, and the flexible insulating member being arranged in the accommodating cavity and connected to the wiring terminal; the flexible insulating member includes a protective portion, a first fixing portion and a second fixing portion, the protective portion being arranged on one side of the wiring terminal and at least partially fitted with the wiring terminal, the first fixing portion being connected to the protective portion, and the second fixing portion being connected to a side of the protective portion away from the first fixing portion; wherein, the first fixing portion and the second fixing portion are arranged around the wiring terminal, and the second fixing portion is connected to the first fixing portion.

[0005] In some embodiments, the battery pack further includes a connector, which is connected to the wiring terminal, and a portion of the connector protrudes from the side of the wiring terminal facing the protective portion; the protective portion has a first groove, and the first groove is provided on the side of the protective portion facing the wiring terminal, and at least a portion of the connector protruding from the side of the wiring terminal facing the protective portion is located within the first groove.

[0006] In some embodiments, an orthographic projection of the connection terminal on the protection portion is located on a side of the protection portion facing the connection terminal.

[0007] In some embodiments, the first fixing portion includes a first body and a first protrusion, one end of the first body is connected to the protective portion, the first protrusion is arranged on a side of the first body away from the wiring terminal and is connected to the first body; the second fixing portion has a through hole, and the first protrusion is detachably embedded in the through hole.

[0008] In some embodiments, the first fixing portion includes a plurality of first protrusions, which are arranged at intervals along the direction of the first fixing portion away from the protecting portion and are all connected to the first body; the second fixing portion has a plurality of through holes, which are arranged at intervals along the direction of the second fixing portion away from the protecting portion; wherein, one of the first protrusions is detachably embedded in one of the through holes.

[0009] In some embodiments, the battery pack has a third orientation, and the protection portion includes:

[0010] a second body disposed between the first fixing portion and the second fixing portion, the second body being connected to the first fixing portion and the second fixing portion respectively; at least a portion of the second body being in contact with the connection terminal;

[0011] The second protrusion is provided on a side of the second body away from the connection terminal. The second protrusion is connected to the second body. The first groove penetrates the second body along the third direction and is recessed into the second protrusion.

[0012] In some embodiments, the battery pack has a first direction intersecting with the third direction; the protective portion includes a plurality of second protrusions, the plurality of second protrusions are arranged at intervals along the first direction, and the plurality of second protrusions are all connected to the second body; the protective portion has a plurality of first grooves arranged at intervals along the first direction, each first groove penetrates the second body along the third direction and is recessed into a second protrusion; the battery pack includes a plurality of the wiring terminals and a plurality of the connecting parts, the plurality of the wiring terminals are arranged at intervals along the first direction, and parts of the second body are respectively fitted with a plurality of the wiring terminals; each of the connecting parts is connected to a wiring terminal, and at least a portion of each connecting part protruding from the side of the wiring terminal facing the second body is located in a first groove.

[0013] In some embodiments, the flexible insulating member further includes at least one partition portion, which is arranged on the side of the second body facing the terminal, the partition portion is connected to the second body, and one partition portion is arranged between two adjacent first grooves, and the partition portion is used to space the two adjacent terminal blocks along the first direction.

[0014] In some embodiments, the battery pack has a second direction, and the protective portion further has a second groove, the second groove is arranged on the side of the protective portion facing the terminal, and the second groove is spaced apart from the first groove along the second direction; along the second direction, the second groove passes through the side of the protective portion facing the single battery.

[0015] Accordingly, an electrical device described in an embodiment of the present application includes the battery pack described in the aforementioned embodiment.

[0016] Beneficial effects: Compared with the prior art, a battery pack according to an embodiment of the present application includes a case, a single cell, a terminal block and a flexible insulating member. The case has a housing, the single cell is arranged in the housing, the terminal block is arranged in the housing and is conductively connected to the single cell, and the flexible insulating member is arranged in the housing and is connected to the terminal block. The flexible insulating member includes a protective portion, a first fixing portion and a second fixing portion. The protective portion is arranged on one side of the terminal block and is at least partially fitted with the terminal block. The first fixing portion is connected to the protective portion, and the second fixing portion is connected to a side of the protective portion away from the first fixing portion. The first fixing portion and the second fixing portion are arranged around the terminal block, and the second fixing portion is connected to the first fixing portion. By providing a flexible insulating member, the present application can wrap the exposed metal portion of the terminal block, thereby effectively improving the insulation of the terminal block, thereby improving the safety of the battery pack and effectively avoiding safety hazards. The flexible insulating member has excellent deformability, enabling effective conformation to the surface of the terminal. The protective portion protects and shields the side of the terminal facing the box opening, reducing the possibility of accidental contact. The first and second fixing portions surround and secure the terminal, securing the flexible insulating member to the outer periphery of the terminal while adapting to the terminal's external contour, improving its applicability. Furthermore, the flexible insulating member provides insulation around the terminal's periphery, effectively preventing insulation failure due to the flexible insulating member falling off.

[0017] Compared with the prior art, the embodiment of the present application is an electric device, including the battery pack as described in the above embodiment. It is understood that the electric device of the embodiment of the present application includes all the technical features and technical effects of the above battery pack, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure of a battery pack according to an embodiment of the present application;

[0020] Figure 2 This is a schematic structural diagram of a battery pack in an embodiment of the present application when an insulating member is not assembled;

[0021] Figure 3 This is a schematic structural diagram of a connection terminal and an insulating member in an embodiment of the present application;

[0022] Figure 4 This is a schematic structural diagram of the side where the second protrusion is located when an insulating member according to an embodiment of the present application is unfolded;

[0023] Figure 5 This is a schematic structural diagram of the side where the second body is located when an insulating member of an embodiment of the present application is unfolded.

[0024] Figure numerals: 1. Box body; 11. Accommodating cavity; 2. Single battery; 3. Terminal; 4. Insulating member; 41. Protective part; 411. First groove; 412. Second body; 413. Second convex part; 414. Second groove; 42. First fixing part; 421. First body; 422. First convex part; 43. Second fixing part; 431. Through hole; 44. Partition; 5. Connector; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0025] 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.

[0026] In the description of the present application, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, and at least one means one, two or more, unless otherwise clearly and specifically defined. In the description of this application, "vertical" means completely vertical at 90° or almost completely vertical, for example, an angle within the range of 80° to 100° is considered vertical. Similarly, "parallel" means completely parallel or almost completely parallel, for example, an angle within 10° of completely parallel is considered parallel.

[0027] In power battery systems, high-voltage safety is paramount. National standards include numerous requirements for high-voltage electrical safety. To meet these requirements, battery packs employ a variety of methods to protect the high-voltage components. However, these methods often involve direct encapsulation with a plastic housing. This can make installation difficult or even impossible in confined spaces.

[0028] In view of this, an embodiment of the present application provides a battery pack, aiming to solve the above-mentioned problems.

[0029] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , an embodiment of the present application provides a battery pack, including a box body 1, a single cell 2, a terminal 3 and a flexible insulating member 4, the box body 1 has a accommodating cavity 11, the single cell 2 is arranged in the accommodating cavity 11, the terminal 3 is arranged in the accommodating cavity 11 and is conductively connected to the single cell 2, the flexible insulating member 4 is arranged in the accommodating cavity 11 and is connected to the terminal 3; the flexible insulating member 4 includes a protective portion 41, a first fixing portion 42 and a second fixing portion 43, the protective portion 41 is arranged on one side of the terminal 3 and is at least partially attached to the terminal 3, the first fixing portion 42 is connected to the protective portion 41, and the second fixing portion 43 is connected to a side of the protective portion 41 away from the first fixing portion 42; wherein the first fixing portion 42 and the second fixing portion 43 are arranged around the terminal 3, and the second fixing portion 43 is connected to the first fixing portion 42.

[0030] In the embodiment of the present application, by providing a flexible insulating member 4, it is possible to wrap the exposed metal portion of the terminal block 3, thereby effectively improving the insulation of the terminal block 3, thereby improving the safety of the battery pack and effectively avoiding safety hazards. The flexible insulating member 4 has good deformability and can effectively fit the surface of the terminal block 3. The protective portion 41 is used to protect and shield the side of the terminal block 3 facing the opening of the box body 1, reducing the possibility of accidental touch. The first fixing portion 42 and the second fixing portion 43 can surround the terminal block 3 and connect and fix it. While fixing the flexible insulating member 4 to the outer peripheral side of the terminal block 3, it can adapt to the special-shaped contour of the outer side of the terminal block 3, improving the applicability of the flexible insulating member 4. In addition, it also achieves insulation wrapping around the peripheral side of the terminal block 3 and can effectively avoid the failure of insulation protection caused by the falling off of the flexible insulating member 4.

[0031] In the embodiment of the present application, the terminal block 3 can be used to connect the single cell 2 to realize the charging and output of the single cell 2. In the embodiment of the present application, there can be one or more single cells 2. When there are multiple single cells 2, the multiple single cells 2 are connected in series and / or in parallel to form a battery pack. The battery pack is connected to the terminal block 3, and the charging and output of the battery pack can be realized at this time. In addition, a high-voltage distribution box is also provided in the battery pack. Electrical components are provided inside the high-voltage distribution box, and there are cases where the electrical components are connected through the terminal block 3. Or the input and output ends of the high-voltage distribution box will also be connected to the terminal block 3. Therefore, under the high-voltage environment in the battery pack, if the terminal block 3 is directly exposed, there will be a safety hazard. The present application provides a flexible insulating member 4 to at least partially fit and wrap the terminal block 3, which can effectively prevent the terminal block 3 from being exposed, thereby reducing the safety hazard of the battery pack and improving the safety of the battery pack.

[0032] It should be noted that the flexible insulating member 4 is deformable and can be bent and deformed according to the outer contour of the terminal block 3, thereby achieving a better fit with the terminal block 3 and better wrapping of the terminal block 3, thereby ensuring the insulation of the terminal block 3. Among them, the protective portion 41 is partially or completely fitted with the large surface of the terminal block 3 to ensure the insulation of the large surface of the terminal block 3. The first fixing portion 42 and the second fixing portion 43 are in the shape of long strips and are also made of flexible insulating material. They can be deformed according to the external shape of the terminal block 3 to cooperate with the protective portion 41 and surround the terminal block 3. At the same time, the first fixing portion 42 and the second fixing portion 43 are fixedly connected at one end away from the protective portion 41, which can fix the flexible insulating member 4 on the outer peripheral side of the terminal block 3, thereby achieving insulation protection for the terminal block 3 and effectively preventing the flexible insulating member 4 from falling and losing its protective effect.

[0033] In some embodiments, the battery pack also includes a connector 5, which is connected to the terminal 3, and a portion of the connector 5 protrudes from the side of the terminal 3 facing the protective portion 41; the protective portion 41 has a first groove 411, and the first groove 411 is provided on the side of the protective portion 41 facing the terminal 3, and at least a portion of the connector 5 protruding from the side of the terminal 3 facing the protective portion 41 is located in the first groove 411.

[0034] In the embodiment of the present application, the connector 5 is used to connect the terminal 3 to the structure to be connected. The protective portion 41 is provided with a first groove 411 for accommodating the portion of the connector protruding from the terminal 3. This prevents the connector 5 from interfering with the protective portion 41 in the third direction Z, and enables at least partial contact between the protective portion 41 and the terminal 3. This structural arrangement not only prevents the connector 5 and the terminal 3 from being insulated, but also allows the groove wall of the first groove 411 and the connector 5 to be mutually limited, thereby preventing the protective portion 41 from shifting, achieving a better positioning effect and further ensuring the insulation protection effect of the flexible insulating member 4.

[0035] In some embodiments, the orthographic projection of the connection terminal 3 on the protection portion 41 is located on the side of the protection portion 41 facing the connection terminal 3 .

[0036] In the embodiment of the present application, through the arrangement of the above-mentioned structure, it can be understood that the area of ​​the terminal 3 is less than or equal to the area of ​​the side of the protection portion 41 facing the terminal 3, so that the protection portion 41 completely covers the terminal 3, thereby achieving complete insulation protection for the side of the terminal 3 facing the protection portion 41.

[0037] It should be noted that the protection portion 41 is arranged opposite to the large surface of the connection terminal 3 . By insulating and protecting the large surface of the connection terminal 3 , the insulation performance of the connection terminal 3 can be effectively improved, thereby improving safety.

[0038] Please refer to Figure 4 and Figure 5 In some embodiments, the first fixing portion 42 includes a first body 421 and a first protrusion 422, one end of the first body 421 is connected to the protective portion 41, and the first protrusion 422 is arranged on a side of the first body 421 away from the terminal 3 and connected to the first body 421; the second fixing portion 43 has a through hole 431, and the first protrusion 422 is detachably embedded in the through hole 431.

[0039] In the embodiment of the present application, the first body 421 and the second fixing portion 43 are provided to wrap around the connection terminal 3, excluding the contact portion with the protective portion 41. The first body 421 is connected to the second fixing portion 43, thereby securing the flexible insulating member 4 to the peripheral side of the connection terminal 3. The first protrusion 422 is removably embedded in the through hole 431, thereby connecting the first fixing portion 42 and the second fixing portion 43. Simultaneously, the connection between the first fixing portion 42 and the second fixing portion 43 can be disconnected to remove the flexible insulating member 4. This structural arrangement enables rapid assembly and disassembly of the flexible insulating member 4, simplifies the battery pack installation and maintenance process, and improves efficiency.

[0040] Please refer to Figure 4 and Figure 5 In some embodiments, the first fixing portion 42 includes a plurality of first protrusions 422, which are spaced apart along the direction in which the first fixing portion 42 is away from the protecting portion 41 and are all connected to the first body 421; the second fixing portion 43 has a plurality of through holes 431, which are spaced apart along the direction in which the second fixing portion 43 is away from the protecting portion 41; wherein, one first protrusion 422 is detachably embedded in one of the through holes 431.

[0041] In the embodiment of the present application, by providing multiple first protrusions 422 and multiple through holes 431, the connection position of the first fixing portion 42 and the second fixing portion 43 can be adjusted, so that the flexible insulating member 4 can adjust the fixed position according to the outer diameter of the terminal block 3, so that the flexible insulating member 4 is firmly fixed to the outer peripheral side of the terminal block 3 and can adapt to terminal blocks 3 with various outer diameters.

[0042] Please refer to Figure 4 and Figure 5 In some embodiments, the battery pack has a third direction Z, the protective portion 41 includes a second body 412 and a second protrusion 413, the second body 412 is arranged between the first fixing portion 42 and the second fixing portion 43, and the second body 412 is respectively connected to the first fixing portion 42 and the second fixing portion 43; at least a portion of the second body 412 is in contact with the terminal 3; the second protrusion 413 is arranged on a side of the second body 412 away from the terminal 3, the second protrusion 413 is connected to the second body 412, and the first groove 411 penetrates the second body 412 along the third direction Z and is recessed into the second protrusion 413.

[0043] In the embodiment of the present application, by providing the second body 412 and the second protrusion 413, the second body 412 is used to fit the connection terminal 3 to achieve insulation protection for the connection terminal 3. The second protrusion 413 provides a recessed space for the first groove 411, thereby accommodating the portion of the connector 5 protruding from the side of the connection terminal 3, effectively solving the problem of interference with the connector 5, and achieving the limited positioning of the protective portion 41. At the same time, by providing the second body 412 and the second protrusion 413, the present application can achieve a good insulation protection effect while reducing the use of materials and reducing the material cost of the flexible insulating member 4.

[0044] Please refer to Figure 4 and Figure 5In some embodiments, the battery pack has a first direction X that intersects with the third direction Z; the protective portion 41 includes a plurality of second protrusions 413, the plurality of second protrusions 413 are arranged at intervals along the first direction X, and the plurality of second protrusions 413 are all connected to the second body 412; the protective portion 41 has a plurality of first grooves 411 arranged at intervals along the first direction X, each first groove 411 penetrates the second body 412 along the third direction Z and is recessed into one of the second protrusions 413; the battery pack includes a plurality of wiring terminals 3 and a plurality of connectors 5, the plurality of wiring terminals 3 are arranged at intervals along the first direction X, and portions of the second body 412 are respectively fitted with the plurality of wiring terminals 3; each connector 5 is connected to one wiring terminal 3, and at least a portion of each connector 5 protruding from a side of the wiring terminal 3 facing the second body 412 is located within one of the first grooves 411.

[0045] In the embodiment of the present application, multiple second protrusions 413 are provided to provide recessed space for multiple first grooves 411. At this time, insulation protection can be provided to multiple adjacent connection terminals at the same time, effectively avoiding the problem that the space is too small to install the protection part 41 at the same time to provide insulation protection for multiple connection terminals 3, thereby improving space utilization and insulation protection effect.

[0046] Please refer to Figure 4 and Figure 5 In some embodiments, the flexible insulating member 4 further includes at least one barrier portion 44, which is arranged on the side of the second body 412 facing the terminal 3, and the barrier portion 44 is connected to the second body 412. A barrier portion 44 is arranged between two adjacent first grooves 411, and the barrier portion 44 is used to separate two adjacent terminal blocks 3 along the first direction X.

[0047] In the embodiment of the present application, two adjacent connecting terminals 3 are insulated and protected by the same protective portion 41, and at the same time, the barrier portion 44 is spaced between the two adjacent connecting terminals 3, which can further achieve insulation protection between the two adjacent connecting terminals 3 and effectively prevent a short circuit between the two adjacent connecting terminals 3 caused by an excessively small electrical gap between the two adjacent connecting terminals 3.

[0048] Please refer to Figure 4 and Figure 5 In some embodiments, the battery pack has a second direction Y, and the protective portion 41 further has a second groove 414. The second groove 414 is arranged on the side of the protective portion 41 facing the terminal 3. The second groove 414 is spaced apart from the first groove 411 along the second direction Y; along the second direction Y, the second groove 414 passes through the side of the protective portion 41 facing the single battery 2.

[0049] In the embodiment of the present application, by providing a second groove 414 with intersecting openings on both sides, a space for accommodating and avoiding the special-shaped structure of the terminal 3 can be provided, ensuring that the connector 5 can be smoothly inserted into the first groove 411, and the second body 412 of the protective portion 41 can be at least partially fitted with the terminal 3, while also providing a certain degree of shielding for the special-shaped portion of the terminal 3, thereby further improving the insulation protection of the terminal 3.

[0050] Accordingly, an electrical device according to an embodiment of the present application includes a battery pack according to the aforementioned embodiment.

[0051] It can be understood that the electrical device of the embodiment of the present application includes all the technical features and technical effects of the aforementioned battery pack, which will not be repeated here.

[0052] Of course, the electrical devices referred to in this application can be application devices such as vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys and electric tools. Vehicles can be new energy vehicles, which can be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc.; spacecraft include airplanes, rockets, space shuttles and spacecraft, etc.; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc.; electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc. The embodiments of this application do not impose any special restrictions on the above-mentioned electrical devices.

[0053] 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.

[0054] The above is a detailed introduction to a battery pack and an electrical device 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: include: A box body having a receiving cavity; A single battery is disposed in the accommodating cavity; A connection terminal is provided in the accommodating cavity and is conductively connected to the single battery; A flexible insulating member is disposed in the accommodating cavity and connected to the wiring terminal; the flexible insulating member includes: a protective portion, disposed on one side of the wiring terminal and at least partially in contact with the wiring terminal; a first fixing portion connected to the protecting portion; a second fixing portion connected to a side of the protection portion away from the first fixing portion; The first fixing portion and the second fixing portion are disposed around the connection terminal, and the second fixing portion is connected to the first fixing portion.

2. The battery pack according to claim 1, wherein: The battery pack further includes a connector connected to the wiring terminal, wherein a portion of the connector protrudes from a side of the wiring terminal facing the protective portion; The protection portion has a first groove, which is arranged on a side of the protection portion facing the connection terminal. At least a portion of the connector protruding from the side of the connection terminal facing the protection portion is located in the first groove.

3. The battery pack according to claim 1, wherein: The orthographic projection of the connection terminal on the protection portion is located on a side of the protection portion facing the connection terminal.

4. The battery pack according to claim 1, wherein: The first fixing portion includes a first body and a first protrusion, one end of the first body is connected to the protection portion, and the first protrusion is provided on a side of the first body away from the connection terminal and connected to the first body; The second fixing portion has a through hole, and the first protrusion is detachably embedded in the through hole.

5. The battery pack according to claim 4, characterized in that: The first fixing portion includes a plurality of first protrusions, which are spaced apart along a direction in which the first fixing portion is away from the protecting portion and are all connected to the first body; The second fixing portion has a plurality of through holes, and the plurality of through holes are spaced apart in a direction in which the second fixing portion is away from the protecting portion; Wherein, one of the first protrusions is detachably embedded in one of the through holes.

6. The battery pack according to claim 2, wherein: The battery pack has a third orientation, and the protection portion includes: a second body disposed between the first fixing portion and the second fixing portion, the second body being connected to the first fixing portion and the second fixing portion respectively; at least a portion of the second body being in contact with the connection terminal; The second protrusion is provided on a side of the second body away from the connection terminal. The second protrusion is connected to the second body. The first groove penetrates the second body along the third direction and is recessed into the second protrusion.

7. The battery pack according to claim 6, characterized in that: The battery pack has a first direction intersecting the third direction; The protecting portion includes a plurality of second protrusions, the plurality of second protrusions are spaced apart along the first direction, and the plurality of second protrusions are connected to the second body; the protecting portion has a plurality of first grooves spaced apart along the first direction, each first groove penetrates the second body along the third direction and is recessed into one of the second protrusions; The battery pack includes a plurality of the wiring terminals and a plurality of the connecting parts, the plurality of the wiring terminals are arranged at intervals along the first direction, and parts of the second body are respectively fitted with the plurality of the wiring terminals; each of the connecting parts is connected to a wiring terminal, and at least a portion of each connecting part protruding from the side of the wiring terminal facing the second body is located in a first groove.

8. The battery pack according to claim 7, characterized in that: The flexible insulating member also includes a barrier portion, which is arranged on the side of the second body facing the connecting terminal, the barrier portion is connected to the second body, and the barrier portion is arranged between two adjacent first grooves, and the barrier portion is used to separate two adjacent connecting terminals along the first direction.

9. The battery pack according to claim 2, wherein: The battery pack has a second direction, and the protective part also has a second groove. The second groove is arranged on the side of the protective part facing the terminal, and the second groove is spaced apart from the first groove along the second direction; along the second direction, the second groove passes through the side of the protective part facing the single battery.

10. An electrical device, characterized in that: Comprising a battery pack as described in any one of claims 1 to 9.

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