A cover plate assembly, a battery and an electric device

Abstract

The utility model relates to battery technical field especially relates to a cover plate subassembly, battery and electric device. The cover plate subassembly includes cover plate and sealant nail, sealant nail includes first limit portion, sealing portion, second limit portion and first introduction portion who are connected in turn along the direction from the outside to the inside of cover plate, and sealing portion is arranged in the liquid injection hole, and the radial dimension of first limit portion and second limit portion are all greater than the radial dimension of sealing portion, and the radial dimension of first introduction portion gradually reduces along the direction from the outside to the inside of cover plate. The cover plate subassembly can realize the sealing with the liquid injection hole, can also prevent sealant nail from being pressed into the inside of battery during assembly, and can also prevent sealant nail from being pushed out by the larger air pressure in the inside of battery, guarantees the better sealing performance at the liquid injection hole.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a cover plate assembly, a battery, and an electrical device. Background Technology

[0002] The main function of the cover assembly is to ensure the airtightness of the battery casing, prevent leakage of gas or liquid inside the battery, and prevent harmful substances such as external air and moisture from entering the battery, thereby protecting the chemical reaction environment inside the battery and extending the battery's lifespan.

[0003] The cover plate has an injection hole for adding electrolyte into the battery. After injection, the injection hole must be reliably sealed to prevent electrolyte leakage and to prevent outside air and impurities from entering the battery, thereby ensuring the battery can function properly.

[0004] In related technologies, sealing nails are typically used to seal the injection hole. This sealing method is relatively simple to operate, low in cost, and can meet basic sealing requirements to a certain extent. However, the following problems exist in production and actual use:

[0005] 1) During the assembly process, overpressure can easily occur, causing the sealing nails to be pressed into the battery, resulting in the failure of the filling hole seal.

[0006] 2) During the charging and discharging process, a series of chemical reactions occur inside the battery, which may produce gas and cause the internal gas pressure to rise. When the internal gas pressure reaches a certain level, the sealing nails are unable to resist the large internal gas pressure and are easily pushed out of the injection hole, causing the injection hole to fail to seal.

[0007] Therefore, there is an urgent need for a cover plate assembly, battery, and power supply device to solve the above problems. Utility Model Content

[0008] The purpose of this utility model is to provide a cover plate assembly, a battery, and an electrical device that can not only achieve a seal with the injection hole, but also prevent the sealing nail from being pressed into the battery during assembly, and prevent the sealing nail from being pushed out by the large air pressure inside the battery, thus ensuring good sealing performance at the injection hole.

[0009] To achieve the above objectives, the following technical solution is provided:

[0010] A cover plate assembly includes a cover plate and a sealing pin, wherein the cover plate has an injection hole, and the sealing pin comprises:

[0011] A first limiting part, a sealing part, a second limiting part, and a first inlet part are sequentially connected along the direction from the outside to the inside of the cover plate. The sealing part is disposed inside the injection hole. The radial dimensions of the first limiting part and the second limiting part are both larger than the radial dimension of the sealing part. The radial dimension of the first inlet part gradually decreases from the outside to the inside of the cover plate.

[0012] As an optional solution, the sealant nail further includes:

[0013] A transition section and a second inlet section are connected to each other. The transition section is connected to the first inlet section. The second inlet section is located on the side of the transition section away from the first inlet section. The radial dimension of the second inlet section gradually decreases or has a decreasing phase from the outer side to the inner side of the cover plate.

[0014] Alternatively, the minimum radial dimension of the second inlet portion is smaller than the diameter of the injection hole, and the maximum radial dimension of the second inlet portion is larger than the diameter of the injection hole.

[0015] As an optional solution, the diameter of the sealing part is D1, the diameter of the injection hole is D2, and 1.05≤D1 / D2≤1.15;

[0016] And / or, the dimension of the sealing part in the thickness direction of the cover plate is H1, and the depth of the injection hole is H2, 0.95≤H1 / H2≤1.5.

[0017] As an optional solution, the maximum radial dimension of the first limiting part is D3, and 0.8mm≤(D3-D2) / 2≤3mm.

[0018] As an optional solution, the dimension of the first limiting part in the thickness direction of the cover plate is H3, where 0.5mm≤H3≤3mm.

[0019] As an optional solution, the cover plate has a recessed groove, and at least a portion of the first limiting part is located in the recessed groove.

[0020] As an alternative, the cover plate includes a body portion and a protrusion portion connected together, with the injection hole penetrating through the body portion and the protrusion portion.

[0021] A battery includes a casing and an electrode assembly, and also includes the aforementioned cover plate assembly.

[0022] An electrical device includes a main body and the aforementioned battery.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] The cover assembly provided by this utility model, by setting the radial dimension of the first limiting part to be greater than the radial dimension of the sealing part, can prevent the sealing nail from being pressed into the battery during assembly; by setting the radial dimension of the second limiting part to be greater than the radial dimension of the sealing part, it can prevent the sealing nail from being pushed out by the air pressure inside the battery, thereby ensuring good sealing performance at the injection hole; by setting the first inlet part, and the radial dimension of the first inlet part gradually decreasing from the outer side to the inner side of the cover plate, it can provide guidance during the assembly of the sealing nail, facilitating the assembly of the sealing nail and the cover plate.

[0025] The battery provided by this utility model, by applying the above-mentioned cover plate assembly, can ensure good sealing performance at the injection hole and extend the battery's service life.

[0026] The electrical device provided by this utility model, by using the aforementioned battery, has good sealing performance and a long service life. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0028] Figure 1 This is a cross-sectional view of the cover plate assembly provided in Embodiment 1 of the present utility model;

[0029] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3 This is a schematic diagram of the structure of the sealing nail provided in Embodiment 1 of this utility model;

[0031] Figure 4 This is a structural schematic diagram of the vehicle provided in Embodiment 2 of this utility model.

[0032] Figure label:

[0033] 10000, vehicles;

[0034] 1000, battery pack;

[0035] 100. Cover plate assembly;

[0036] 10. Cover plate; 1001. Injection hole; 1002. Settling tank; 11. Body; 12. Protrusion;

[0037] 20. Sealing nail; 21. First limiting part; 22. Sealing part; 23. Second limiting part; 24. First guiding part; 25. Transition part; 26. Second guiding part;

[0038] 30. Pole post; 31. Column part; 32. Plate part;

[0039] 40. Riveting block;

[0040] 50. Sealing ring;

[0041] 60. First insulating component;

[0042] 2000, controller; 3000, motor. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] Example 1

[0050] This embodiment provides a battery including a casing and an electrode assembly. The electrode assembly is disposed within the casing, which provides support and protection for the electrode assembly. The casing can be made of plastic or metal. When the casing is made of metal, it offers better heat dissipation, higher strength, and can provide structural support.

[0051] The electrode assembly in this application can be formed by winding or by stacking. Generally, the electrode assembly includes at least a positive electrode, a separator, and a negative electrode.

[0052] Optionally, the housing has at least one opening, such as Figure 1As shown, the battery also includes a cover assembly 100, which covers the opening of the housing. The electrode assembly is connected to the cover assembly 100, and the cover assembly 100 is connected to the main body of the external electrical device, so as to realize the function of the battery supplying power to the main body of the electrical device.

[0053] Optionally, the cover assembly 100 includes a cover 10, a terminal post 30, and a riveting block 40. The cover 10 covers the opening of the housing. The terminal post 30 includes a column portion 31 and a plate portion 32. The column portion 31 passes through the cover 10. The terminal post 30 passes through one side of the cover 10 and is riveted to the riveting block 40. The cover 10 is sandwiched in the middle by the plate portion 32 and the riveting block 40, so that the terminal post 30 and the riveting block 40 are respectively assembled with the cover 10. The plate portion 32 of the terminal post 30 is connected to the electrode group. The terminal post 30 can short-circuit and conduct electricity between the electrode group and the outside, which facilitates the charging and discharging of the battery.

[0054] Optionally, the cover plate assembly 100 also includes a sealing ring 50, which is sandwiched between the electrode post 30 and the cover plate 10. The sealing ring 50 can insulate and isolate the electrode post 30 and the cover plate 10 to prevent short circuit between the electrode post 30 and the cover plate 10. At the same time, the sealing ring 50 can seal the gap between the post body 31 and the cover plate 10 to prevent leakage of electrolyte or gas.

[0055] Optionally, the cover plate assembly 100 further includes a first insulating member 60, which is disposed between the riveting block 40 and the cover plate 10 to ensure insulation between the riveting block 40 and the cover plate 10 and to prevent short circuit between the riveting block 40 and the cover plate 10.

[0056] Optionally, the cover plate assembly 100 further includes a second insulating member (not shown in the figure). The second insulating member is disposed on the side of the cover plate 10 away from the riveting block 40. The second insulating member can abut against the pole group, fix the pole group, prevent the pole group from shifting, and prevent the pole group and the cover plate 10 from short-circuiting.

[0057] Optionally, the cover plate 10 is provided with an injection hole 1001. After the cover plate assembly 100 is assembled with the housing, electrolyte is injected into the housing through the injection hole 1001.

[0058] After electrolyte filling, sealing pins 20 are typically used to seal the filling hole 1001 to prevent electrolyte leakage and to prevent external air and impurities from entering the battery, thus ensuring the battery can function normally. However, during assembly, the sealing pins 20 are easily pressed into the battery; in actual use, the sealing pins 20 are easily pushed out of the filling hole 1001 by the large air pressure inside the battery, causing the sealing of the filling hole 1001 to fail.

[0059] To solve the above problems, such as Figures 1-3As shown, the sealing nail 20 provided in this embodiment includes a first limiting part 21, a sealing part 22, a second limiting part 23, and a first introducing part 24 connected sequentially from the outer side to the inner side of the cover plate 10. The sealing part 22 is disposed within the injection hole 1001. The radial dimensions of the first limiting part 21 and the second limiting part 23 are both larger than the radial dimension of the sealing part 22. The radial dimension of the first introducing part 24 gradually decreases from the outer side to the inner side of the cover plate 10. The outer side of the cover plate 10 refers to the side of the cover plate 10 facing away from the electrode assembly, and the inner side of the cover plate 10 refers to the side of the cover plate 10 facing the electrode assembly.

[0060] By setting the radial dimension of the first limiting part 21 to be greater than the radial dimension of the sealing part 22, the sealing nail 20 can be prevented from being pressed into the battery during assembly. By setting the radial dimension of the second limiting part 23 to be greater than the radial dimension of the sealing part 22, the sealing nail 20 can be prevented from being pushed out by the air pressure inside the battery, thereby ensuring good sealing performance at the injection hole 1001. By setting the first inlet part 24, and the radial dimension of the first inlet part 24 gradually decreasing from the outer side to the inner side of the cover plate 10, a guide is provided during the assembly of the sealing nail 20, which facilitates the assembly of the sealing nail 20 and the cover plate 10.

[0061] Optionally, the sealing nail 20 further includes a transition portion 25 and a second guide portion 26 connected to each other. The transition portion 25 is connected to the first guide portion 24, and the second guide portion 26 is disposed on the side of the transition portion 25 opposite to the first guide portion 24. The radial dimension of the second guide portion 26 gradually decreases or has a decreasing phase from the outer side to the inner side of the cover plate 10. By providing the transition portion 25, the processing and forming of the sealing nail 20 is facilitated; by providing the second guide portion 26, guidance is provided for the assembly of the sealing nail 20.

[0062] Optionally, the minimum radial dimension of the second inlet portion 26 is smaller than the diameter of the injection hole 1001, and the maximum radial dimension of the second inlet portion 26 is larger than the diameter of the injection hole 1001, so as to facilitate pre-fixing by pressing into the injection hole 1001 during assembly.

[0063] Optionally, the diameter of the sealing part 22 is D1, and the diameter of the injection hole 1001 is D2, with 1.05≤D1 / D2≤1.15. By limiting the above dimensions, the sealing part 22 can ensure a good sealing effect on the injection hole 1001, and facilitate the assembly of the sealing nail 20 and the cover plate 10. This avoids the value of D1 / D2 being too small, which would result in a poor sealing effect, and at the same time avoids the value of D1 / D2 being too large, which would make it difficult to press the sealing nail 20 in.

[0064] For example, the value of D1 / D2 can be 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, 1.11, 1.12, 1.13, 1.14, or 1.15. In other embodiments, the value of D1 / D2 can also be any value between 1.05 and 1.15.

[0065] Optionally, the maximum radial dimension of the first limiting part 21 is D3, where 0.8mm ≤ (D3-D2) / 2 ≤ 3mm. That is, half the difference between the projected dimension of the first limiting part 21 on the cover plate 10 and the diameter of the injection hole 1001 is 0.8mm-3mm. This is to avoid a higher risk of the sealing nail 20 being pressed into the battery if the value of (D3-D2) / 2 is too small; and to avoid the value of (D3-D2) / 2 being too large, which would affect the length / width design of the cover plate 10. For example, the value of (D3-D2) / 2 can be 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3mm. In other embodiments, the value of (D3-D2) / 2 can also be any value between 0.8mm and 3mm.

[0066] Optionally, the dimension of the sealing part 22 in the thickness direction of the cover plate 10 is H1, and the depth of the injection hole 1001 is H2, with 0.95≤H1 / H2≤1.5, so as to avoid the assembly difficulty caused by the value of H1 / H2 being too small, and at the same time to avoid the sealing part 22 being too large due to the value of H1 / H2 being too large, resulting in material waste.

[0067] For example, the value of H1 / H2 can be 0.95, 1, 1.05, 1.1, 1.15, 1.2, 1.25, 1.3, 1.35, 1.4, 1.45, or 1.5. In other embodiments, the value of H1 / H2 can also be any value between 0.95 and 1.5.

[0068] Optionally, the dimension of the first limiting part 21 in the thickness direction of the cover plate 10 is H3, where 0.5mm ≤ H3 ≤ 3mm, to ensure that the first limiting part 21 has good strength, while avoiding an excessively large value of H3 that would cause the upper surface of the first limiting part 21 to protrude above the upper surface of the pole post 30. Exemplarily, the value of H3 can be 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3mm. In other embodiments, the value of H3 can also be any value between 0.5mm and 3mm.

[0069] Optionally, the injection hole 1001 has a recess 1002, and at least a portion of the first limiting part 21 is located within the recess 1002. The recess 1002 is formed by an inward recess from the outer surface of the cover plate 10. By providing the recess 1002 and placing the first limiting part 21 within the recess 1002, the recess 1002 can provide radial limiting for the first limiting part 21, enhancing the anti-detachment capability of the sealing nail 20. During injection, the recess 1002 can provide a physical positioning reference for the injection needle, preventing electrolyte leakage or uneven injection volume caused by needle deviation during injection.

[0070] Optionally, the cover plate 10 includes a body portion 11 and a protrusion 12 connected to each other. The protrusion 12 is formed by extending at least a portion of the inner side surface of the body portion 11 toward the inside of the battery. The liquid injection hole 1001 passes through the body portion 11 and the protrusion 12. By providing the protrusion 12, the hole depth of the liquid injection hole 1001 can be increased, thereby increasing the mating area between the cover plate 10 and the sealing nail 20, thereby further improving the sealing performance at the liquid injection hole 1001.

[0071] Example 2

[0072] This embodiment provides an electrical device, which includes a main body and a battery provided in Embodiment 1. The battery can provide electrical energy to the main body of the electrical device, thereby enabling the main body of the electrical device to automatically complete preset actions through electrical energy, ensuring good performance of the main body of the electrical device, and ensuring the service life and safety performance of the electrical device.

[0073] Specifically, the main body of the electrical device can be a vehicle, mobile phone, portable device, laptop, ship, spacecraft, electric toy, or power tool, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles or hybrid electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, or electric planers, etc. This embodiment does not limit the main body of the aforementioned electrical device.

[0074] The following examples are for illustrative purposes only. Figure 4 As shown, an embodiment of this application uses a vehicle 10000 as an example to illustrate an electrical device. A battery pack 1000 is installed inside the vehicle 10000, and the battery pack 1000 can be located at the bottom, head, or tail of the vehicle 10000. The battery pack 1000 includes the batteries provided in Embodiment 1, and the number of batteries can be one or more. Multiple batteries can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple batteries are connected in both series and parallel.

[0075] The battery pack 1000 can be used to power the vehicle 10000; for example, the battery pack 1000 can serve as the operating power source for the vehicle 10000. The vehicle 10000 may also include a controller 2000 and a motor 3000. The controller 2000 is used to control the battery pack 1000 to supply power to the motor 3000, for example, to meet the power needs of the vehicle 10000 during startup, navigation, and driving.

[0076] In some embodiments of this application, the battery pack 1000 can not only serve as the operating power source for the vehicle 10000, but also as the driving power source for the vehicle 10000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 10000.

[0077] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0078] The above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cover plate assembly, characterized in that, The system includes a cover plate (10) and sealing nails (20). The cover plate (10) has an injection hole (1001), and the sealing nails (20) include: A first limiting part (21), a sealing part (22), a second limiting part (23), and a first inlet part (24) are sequentially connected along the direction from the outside to the inside of the cover plate (10). The sealing part (22) is disposed inside the injection hole (1001). The radial dimensions of the first limiting part (21) and the second limiting part (23) are both larger than the radial dimension of the sealing part (22). The radial dimension of the first inlet part (24) gradually decreases from the outside to the inside of the cover plate (10).

2. The cover plate assembly according to claim 1, characterized in that, The sealing nail (20) also includes: The transition section (25) and the second inlet section (26) are connected. The transition section (25) is connected to the first inlet section (24). The second inlet section (26) is disposed on the side of the transition section (25) away from the first inlet section (24). The radial dimension of the second inlet section (26) gradually decreases or has a decreasing stage from the outside to the inside of the cover plate (10).

3. The cover plate assembly according to claim 2, characterized in that, The minimum radial dimension of the second inlet portion (26) is smaller than the diameter of the injection hole (1001), and the maximum radial dimension of the second inlet portion (26) is larger than the diameter of the injection hole (1001).

4. The cover plate assembly according to claim 1, characterized in that, The diameter of the sealing part (22) is D1, and the diameter of the injection hole (1001) is D2, 1.05≤D1 / D2≤1.15; And / or, the dimension of the sealing part (22) in the thickness direction of the cover plate (10) is H1, and the depth of the injection hole (1001) is H2, 0.95≤H1 / H2≤1.

5.

5. The cover plate assembly according to claim 4, characterized in that, The maximum radial dimension of the first limiting part (21) is D3, 0.8mm≤(D3-D2) / 2≤3mm.

6. The cover plate assembly according to claim 1, characterized in that, The dimension of the first limiting part (21) in the thickness direction of the cover plate (10) is H3, 0.5mm≤H3≤3mm.

7. The cover plate assembly according to any one of claims 1-6, characterized in that, The cover plate (10) has a sinkhole (1002), and at least a portion of the first limiting part (21) is located in the sinkhole (1002).

8. The cover plate assembly according to any one of claims 1-6, characterized in that, The cover plate (10) includes a body part (11) and a protrusion (12) connected to each other, and the injection hole (1001) passes through the body part (11) and the protrusion (12).

9. A battery, comprising a casing and an electrode assembly, characterized in that, It also includes the cover plate assembly as described in any one of claims 1-8.

10. An electrical appliance, comprising an electrical appliance body, characterized in that, It also includes the battery as described in claim 9.

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