Battery module end plate assembly, battery pack and electric equipment

Abstract

The utility model discloses a battery module end plate assembly, battery pack and electric equipment, the module end plate assembly includes: module end plate, plug-in support and plug-in, plug-in support is fixed to module end plate, plug-in is suitable for being fixed to plug-in support, the plug-in support is provided with first slide fit portion, plug-in is provided with second slide fit portion, the first slide fit portion is provided with first slide fit portion, and the second slide fit portion is provided with second slide fit portion. The first sliding fit part and the second sliding fit part are in sliding fit in the first direction, and the first direction is the extending direction of the large face of the module end plate. According to the battery module end plate assembly disclosed by the utility model, the plug-in bracket is fixed on the module end plate, and the plug-in is in sliding fit with the plug-in bracket along the first direction, so that the plug-in can be arranged on the module end plate along the direction parallel to the extension direction of the large surface of the module end plate; therefore, the module end plate does not need to be designed more complexly, and the structural design of the module end plate can be simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of battery pack structures, in particular to a battery module end plate assembly, a battery pack and electrical equipment. Background Art

[0002] In the CCS solution for the wiring harness of the battery pack, the wiring harness led out of the battery pack will be gathered on a plug-in. In the related technology, the plug-in is arranged parallel to the large surface of the module end plate. However, this will cause the structure of the module end plate to be more complicated. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery module end plate assembly, wherein the plug-in in the module end plate assembly can be arranged at the module end in a direction parallel to the extension direction of the large surface of the module end plate, and at the same time, by providing a plug-in bracket, the structural design of the module end plate is simplified.

[0004] According to an embodiment of the utility model, the battery module end plate assembly includes: a module end plate, a plug-in bracket and a plug-in, wherein the plug-in bracket is fixed to the module end plate, and the plug-in is suitable for being fixed to the plug-in bracket, wherein the plug-in bracket is provided with a first sliding fitting portion, and the plug-in is provided with a second sliding fitting portion, and the first sliding fitting portion and the second sliding fitting portion are slidingly fitted along a first direction, and the first direction is parallel to the extension direction of the large surface of the module end plate.

[0005] According to the battery module end plate assembly of the embodiment of the utility model, the plug-in bracket is fixed on the module end plate, and the plug-in and the plug-in bracket slide together along a first direction, so that the plug-in can be arranged on the module end plate along a direction parallel to the extension direction of the large surface of the module end plate. In addition, since the plug-in bracket is provided, there is no need to make a more complicated design of the module end plate, which is conducive to simplifying the structural design of the module end plate.

[0006] According to the battery module end plate assembly of some embodiments of the present invention, one of the first sliding fitting portion and the second sliding fitting portion is configured as a sliding rod and the other is configured as a sliding groove, and the sliding rod is slidingly fitted with the sliding groove.

[0007] According to the battery module end plate assembly of some embodiments of the present invention, the inner wall of the slide groove is provided with a first clamping portion, the slide rod is provided with a second clamping portion, and the first clamping portion and the second clamping portion are clamped together.

[0008] According to the battery module end plate assembly of some embodiments of the present invention, one of the first clamping portion and the second clamping portion is configured as a barb and the other is configured as a slot, and the barb is clamped and matched with the slot.

[0009] According to the battery module end plate assembly of some embodiments of the present invention, the module end plate is provided with a plug-in hole, and the plug-in bracket is plugged into the plug-in hole.

[0010] According to the battery module end plate assembly of some embodiments of the present invention, the plug-in bracket includes a plug-in portion and a connecting portion, the plug-in portion is plugged into the plug-in hole, the connecting portion is connected to the plug-in portion and extends to the outside of the plug-in hole, and the first sliding fitting portion is arranged on the connecting portion.

[0011] According to the battery module end plate assembly of some embodiments of the utility model, the plug-in portion is provided with a third clamping portion, the inner wall of the plug-in hole is provided with a fourth clamping portion, and the third clamping portion and the fourth clamping portion are clamped and matched.

[0012] According to the battery module end plate assembly of some embodiments of the present invention, a weight-reducing cavity is formed in the plug-in portion, and one end of the connecting portion extends into the weight-reducing cavity and is connected to the inner wall of the weight-reducing cavity.

[0013] The utility model also provides a battery pack.

[0014] The battery pack according to the embodiment of the utility model includes: the battery module end plate assembly described in any one of the above embodiments.

[0015] The utility model also provides an electricity-consuming device.

[0016] According to some embodiments of the utility model, the electric equipment includes: the battery pack described in the above embodiments.

[0017] The advantages of the electrical equipment, the battery pack and the battery module end plate assembly compared to the prior art are the same and will not be elaborated here.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 An exploded view of a module end plate assembly of some embodiments of the present invention;

[0021] Figure 2 for Figure 1 Assembly drawing of module end plate and plug-in bracket in;

[0022] Figure 3 for Figure 2 A in the enlarged view;

[0023] Figure 4 for Figure 1 Assembly drawing of the plug-in bracket and the plug-in in FIG.

[0024] Figure 5 for Figure 4 A schematic diagram of a plug-in bracket in FIG.

[0025] Figure 6 for Figure 4 Schematic diagram of the plugin in .

[0026] Reference numerals:

[0027] Module end plate assembly 100;

[0028] Module end plate 10, plug hole 11, fourth clamping portion 12;

[0029] Plug-in bracket 20, first sliding fitting portion 21;

[0030] Insertion portion 22, third clamping portion 221, weight reduction cavity 222, connection portion 23;

[0031] Insert 30, second sliding fitting portion 31;

[0032] The sliding groove 40 , the first clamping portion 41 , the sliding rod 50 , and the second clamping portion 51 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0035] Reference below Figure 1-Figure 6 A battery module end plate assembly 100 according to an embodiment of the present invention is described.

[0036] like Figure 1-Figure 6 As shown, the battery module end plate assembly 100 according to the embodiment of the present utility model includes: a module end plate 10 , a plug-in bracket 20 and a plug-in 30 .

[0037] The plug-in bracket 20 is fixed to the module end plate 10, and the plug-in 30 is suitable for being fixed to the plug-in bracket 20, wherein the plug-in bracket 20 is provided with a first sliding fitting portion 21, and the plug-in 30 is provided with a second sliding fitting portion 31, and the first sliding fitting portion 21 and the second sliding fitting portion 31 are slidingly fitted along a first direction, and the first direction is parallel to the extension direction of the large surface of the module end plate 10.

[0038] It should be noted that the “large surface” of the module end plate 10 refers to the surface with the largest area of ​​the module end plate 10 , and the plug-in bracket 20 is fixed to the side surface of the module end plate 10 extending along the first direction.

[0039] Therefore, the second sliding fitting portion 31 of the plug-in 30 is slidably fitted with the first sliding fitting portion 21 of the plug-in bracket 20 along the first direction, so that the wiring harness fixed by the plug-in 30 can be parallel to the extension direction of the large surface of the module end plate 10, so that the module end plate assembly 100 can occupy less space, thereby making it more convenient to set the module end plate assembly 100 in the battery pack, and also making the structure of the module end plate assembly 100 simpler.

[0040] For example, when the plug-in bracket 20 is fixed to the module end plate 10, the plug-in bracket 20 can be installed on the side of the module end plate 10, so that the plug-in 30 can be located on the side of the module end plate 10 when it cooperates with the plug-in bracket 20. This can save the space occupied by the plug-in bracket 20 and the plug-in 30 in the direction perpendicular to the large surface of the module end plate 10, and at the same time, the first sliding fitting part 21 and the second sliding fitting part 31 slide and fit along the first direction.

[0041] For example, the opening of the plug-in 30 will also be parallel to the first direction, so that the wiring harness fixed by the plug-in 30 can be parallel to the first direction, thereby ensuring that neither the plug-in 30 nor the wiring harness takes up too much space. At the same time, the plug-in bracket 20 and the plug-in 30 have a simple structure, which can simplify the design of the module end plate assembly 100.

[0042] According to the battery module end plate assembly 100 of the embodiment of the utility model, the plug-in bracket 20 is fixed on the module end plate 10, and the plug-in 30 and the plug-in bracket 20 are slidably matched along a first direction, so that the plug-in 30 can be arranged on the module end plate 10 along a direction parallel to the extension direction of the large surface of the module end plate 10. In addition, since the plug-in bracket 20 is provided, there is no need to make a more complicated design for the module end plate 10, which is conducive to simplifying the structural design of the module end plate 10.

[0043] In some embodiments, Figure 3-Figure 6As shown, one of the first sliding fitting portion 21 and the second sliding fitting portion 31 is configured as a sliding rod 50 and the other is configured as a sliding groove 40 , and the sliding rod 50 is slidingly fitted with the sliding groove 40 .

[0044] Thus, the sliding rod 50 and the sliding groove 40 are slidably matched, so that the sliding match between the first sliding match portion 21 and the second sliding match portion 31 is easier.

[0045] Among them, when the first sliding fitting part 21 is constructed as a sliding rod 50, the second sliding fitting part 31 will be constructed as a sliding groove 40, and when the first sliding fitting part 21 is constructed as a sliding groove 40, the second sliding fitting part 31 is constructed as a sliding rod 50. Preferably, in this embodiment, the first sliding fitting part 21 is constructed as a sliding groove 40, and the second sliding fitting part 31 is constructed as a sliding rod 50, which can make it more convenient to install the plug-in 30 on the plug-in bracket 20.

[0046] In some embodiments, Figure 3-Figure 6 As shown, the inner wall of the slide groove 40 is provided with a first clamping portion 41 , and the slide rod 50 is provided with a second clamping portion 51 , and the first clamping portion 41 and the second clamping portion 51 are clamped and matched.

[0047] Thus, the slide groove 40 and the slide rod 50 are clamped together by the first clamping portion 41 and the second clamping portion 51, so that the plug-in 30 and the plug-in bracket 20 can be fixed together, so that the plug-in 30 and the plug-in bracket 20 can be fixed together after completing the sliding fit, so that the connected plug-in 30 and the plug-in bracket 20 are not easy to separate.

[0048] In some embodiments, one of the first clamping portion 41 and the second clamping portion 51 is configured as a barb and the other is configured as a slot, and the barb is clamped and matched with the slot.

[0049] Thus, the barb and the slot are engaged with each other, so that the first engaging portion 41 and the second engaging portion 51 are not easily separated after the engaging is completed, which can improve the connection stability, so that the plug-in 30 is not easily dropped off after being installed in the plug-in bracket 20 .

[0050] It should be noted that the card slot can be constructed as a cross bar in the slide groove 40, and the cross bar is set at one end of the slide groove 40, so that when the plug-in 30 is installed on the plug-in bracket 20, the barb first abuts against the cross bar and produces a certain deformation, and then the barb can hook the cross bar to fix the plug-in 30.

[0051] Among them, when the first clamping portion 41 is configured as a barb, the second clamping portion 51 is configured as a slot, so that when the first clamping portion 41 is configured as a slot, the second clamping portion 51 is configured as a barb. Preferably, in this embodiment, the first clamping portion 41 is configured as a barb and the second clamping portion 51 is configured as a slot, which can make it easier to install the plug-in 30 on the plug-in bracket 20.

[0052] In some embodiments, Figure 2-Figure 5 As shown, the module end plate 10 is provided with a plug-in hole 11 , and the plug-in bracket 20 is plugged into the plug-in hole 11 .

[0053] Thus, the plug-in bracket 20 is inserted into the plug-in hole 11 of the module end plate 10 , so that the plug-in bracket 20 can be fixed on the module end plate 10 .

[0054] It should be noted that the plug-in hole 11 is arranged on the side of the module end plate 10, so that the plug-in bracket 20 is arranged on the side of the module end plate 10 when it is plugged into the plug-in hole 11, which can make the module end plate 10 occupy less space. At the same time, a plurality of plug-in holes 11 can be provided on the module end plate 10, so that the plurality of plug-in holes 11 can reduce the weight of the module end plate 10, so that the weight of the module end plate 10 is lighter, thereby making the weight of the formed battery pack lighter.

[0055] In some embodiments, Figure 4-Figure 6 As shown, the plug-in bracket 20 includes an inserting portion 22 and a connecting portion 23 . The inserting portion 22 is inserted into the inserting hole 11 . The connecting portion 23 is connected to the inserting portion 22 and extends to the outside of the inserting hole 11 . The first sliding fitting portion 21 is provided on the connecting portion 23 .

[0056] Thus, the plug-in portion 22 on the plug-in bracket 20 is adapted to the plug-in hole 11, and the connecting portion 23 connected to the plug-in portion 22 can extend out of the plug-in hole 11, so that the first sliding fitting portion 21 is arranged on the portion of the connecting portion 23 extending out of the plug-in hole 11, so that the plug-in 30 can fix the wiring harness on the side of the module end plate 10 after being matched with the plug-in bracket 20.

[0057] In some embodiments, the plug-in portion 22 is provided with a third clamping portion 221 , and the inner wall of the plug-in hole 11 is provided with a fourth clamping portion 12 , and the third clamping portion 221 and the fourth clamping portion 12 are clamped and matched.

[0058] Therefore, the plug-in bracket 20 can be fixed on the module end plate 10 through the clamping cooperation between the third clamping part 221 and the fourth clamping part 12, so that the plug-in bracket 20 can be more stable when fixing the plug-in 30, making it difficult for the plug-in 30 to bring the plug-in bracket 20 out of the module end plate 10.

[0059] For example, the fourth clamping portion 12 can be constructed as a clamping hole, and the third clamping portion 221 can be constructed as a clamping protrusion matching the clamping hole, so that the clamping protrusion can fix the plug-in bracket 20 on the module end plate 10 after being fixed to the clamping hole.

[0060] Furthermore, the plug-in bracket 20 can be made of plastic material, so that the plug-in bracket 20 itself has a certain elasticity. When the plug-in bracket 20 is installed into the plug-in hole 11 of the module end plate 10, the plug-in bracket 20 itself will undergo a certain elastic deformation. When the snap-in protrusion and the snap-in hole are relative, the plug-in bracket 20 can be restored to its original state so that the snap-in protrusion is snapped into the snap-in hole.

[0061] In some embodiments, Figure 1-Figure 5 As shown, a weight-reducing cavity 222 is formed in the plug-in portion 22 , and one end of the connecting portion 23 extends into the weight-reducing cavity 222 and is connected to the inner wall of the weight-reducing cavity 222 .

[0062] Therefore, the weight-reducing cavity 222 formed in the plug-in portion 22 can make the plug-in bracket 20 lighter, which makes it easier to fix it to the module end plate 10. At the same time, one end of the connecting portion 23 is also in the weight-reducing cavity 222, which makes the connection between the connecting portion 23 and the plug-in portion 22 more stable.

[0063] In some other embodiments, the plug-in portion 22 is designed to follow the shape of the plug-in hole 11 , and the outer wall of the plug-in portion 22 abuts against the inner wall of the plug-in hole 11 .

[0064] As a result, the outer wall of the plug-in portion 22 will abut against the inner wall of the plug-in hole 11, so that when the plug-in portion 22 and the plug-in hole 11 cooperate, it can be ensured that the bracket is not easy to shake, so that the plug-in 30 can fix the wiring harness more stably.

[0065] For example, the plug hole 11 can be constructed as a triangle, and the plug portion 22 can also be constructed as a triangle, so that the plug portion 22 and the plug hole 11 can better fit together. Of course, in other embodiments, the plug hole 11 can also be constructed as other polygons, such as a rectangle or a pentagon.

[0066] The utility model also provides a battery pack.

[0067] A battery pack according to an embodiment of the present invention includes: a battery module end plate assembly 100 according to any one of the above embodiments.

[0068] According to the battery pack of the embodiment of the utility model, in the module end plate assembly 100 on the battery pack, the plug-in bracket 20 is fixed on the module end plate 10, and the plug-in 30 and the plug-in bracket 20 are slidably matched along a first direction, so that the plug-in 30 can be arranged on the module end plate 10 along a direction parallel to the extension direction of the large surface of the module end plate 10, and because the plug-in bracket 20 is provided, there is no need to make a more complicated design for the module end plate 10, which is conducive to simplifying the structural design of the module end plate 10.

[0069] According to the battery pack of the embodiment of the utility model, the plug-in hole 11 of the module end plate 10 is constructed in a triangle shape, so that the plug-in portion 22 of the plug-in bracket 20 is also constructed in a triangle shape, and at the same time, the module end plate 10 is also constructed with a clamping hole on the plug-in hole 11, and a clamping protrusion is provided at the place where the plug-in portion 22 is opposite to the clamping hole, so that the plug-in bracket 20 can be fixed on the module end plate 10, and the plug-in bracket 20 is made of plastic, so that the plug-in bracket 20 itself can produce a certain deformation when plugged in, and can restore the deformation after the clamping protrusion is opposite to the clamping hole to achieve clamping. It should be noted that the clamping hole is opened on the large surface of the module end plate 10, and the wall thickness of the plug-in hole 11 on the side facing the large surface is 0.5 mm, which makes the fixing effect of the clamping protrusion and the clamping hole better.

[0070] Furthermore, the slide groove 40 on the plug-in 30 and the slide rod 50 on the plug-in bracket 20 are snap-fitted along the first direction, so that the wiring harness fixed by the mated plug-in 30 is parallel to the extension direction of the large surface of the module end plate 10 and is located on the side of the module end plate 10, thereby simplifying the structural design of the module end plate 10. When the slide groove 40 and the slide rod 50 are mated, the barb in the slide groove 40 will cooperate with the slot on the slide rod 50 to fix the plug-in 30 on the plug-in bracket 20.

[0071] The utility model also provides an electricity-consuming device.

[0072] For example, the electrical device may be a vehicle, or other device such as engineering equipment.

[0073] The electric device according to the embodiment of the utility model comprises: the battery pack of the above embodiment.

[0074] According to the electrical device of the embodiment of the utility model, in the battery pack therein, the plug-in bracket 20 is fixed on the module end plate 10, and the plug-in 30 and the plug-in bracket 20 are slidably matched along a first direction, so that the plug-in 30 can be arranged on the module end plate 10 along a direction parallel to the extension direction of the large surface of the module end plate 10, and because the plug-in bracket 20 is provided, it is not necessary to make a more complicated design for the module end plate 10, which is conducive to simplifying the structural design of the module end plate 10.

[0075] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" 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 invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0076] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0077] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery module end plate assembly, characterized in that: include: Module end plate (10); A plug-in bracket (20) and a plug-in (30), wherein the plug-in bracket (20) is fixed to the module end plate (10), and the plug-in (30) is suitable for being fixed to the plug-in bracket (20); The plug-in bracket (20) is provided with a first sliding fitting portion (21), and the plug-in (30) is provided with a second sliding fitting portion (31), the first sliding fitting portion (21) and the second sliding fitting portion (31) are slidingly fitted along a first direction, and the first direction is parallel to the extension direction of the large surface of the module end plate (10).

2. The battery module end plate assembly according to claim 1, characterized in that: One of the first sliding fitting portion (21) and the second sliding fitting portion (31) is configured as a sliding rod (50) and the other is configured as a sliding groove (40), and the sliding rod (50) is slidingly fitted with the sliding groove (40).

3. The battery module end plate assembly according to claim 2, characterized in that: The inner wall of the sliding groove (40) is provided with a first clamping portion (41), and the sliding rod (50) is provided with a second clamping portion (51), and the first clamping portion (41) and the second clamping portion (51) are clamped and matched.

4. The battery module end plate assembly according to claim 3, characterized in that: One of the first clamping portion (41) and the second clamping portion (51) is configured as a barb and the other is configured as a slot, and the barb is engaged with the slot.

5. The battery module end plate assembly according to any one of claims 1 to 4, characterized in that: The module end plate (10) is provided with a plug-in hole (11), and the plug-in bracket (20) is plugged into the plug-in hole (11).

6. The battery module end plate assembly according to claim 5, characterized in that: The plug-in bracket (20) comprises an inserting portion (22) and a connecting portion (23), wherein the inserting portion (22) is inserted into the inserting hole (11), the connecting portion (23) is connected to the inserting portion (22) and extends to the outside of the inserting hole (11), and the first sliding fitting portion (21) is arranged on the connecting portion (23).

7. The battery module end plate assembly according to claim 6, characterized in that: The plug-in portion (22) is provided with a third clamping portion (221), the inner wall of the plug-in hole (11) is provided with a fourth clamping portion (12), and the third clamping portion (221) and the fourth clamping portion (12) are clamped and matched.

8. The battery module end plate assembly according to claim 6, characterized in that: A weight-reducing cavity (222) is formed in the plug-in portion (22), and one end of the connecting portion (23) extends into the weight-reducing cavity (222) and is connected to the inner wall of the weight-reducing cavity (222).

9. A battery pack, characterized in that: include: The battery module end plate assembly (100) according to any one of claims 1 to 8.

10. An electrical device, characterized in that: include: The battery pack according to claim 9.

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