Top cover assembly, battery and electric equipment

Abstract

The utility model relates to a top cover assembly, a battery and electric equipment. The top cover assembly comprises a cover plate, the pole column is arranged on the cover plate; the insulating component is connected with the cover plate, the insulating component comprises a first insulating part and a second insulating part, the second insulating part is rotationally connected with the first insulating part, at least one reinforcing part is arranged on the second insulating part, the reinforcing part comprises a first reinforcing rib extending in the first direction of the second insulating part, and a second reinforcing rib extending in the second direction of the second insulating part is arranged on the first reinforcing rib. When the second insulating part rotates to be opposite to the first insulating part, the reinforcing part is located between the first insulating part and the second insulating part. According to the utility model, the structural strength of the second insulating part is effectively improved, and especially when the size of the second insulating part is narrow and long, the deformation of the second insulating part can be effectively avoided by arranging the first reinforcing rib. The accuracy of the position of the second insulating part can be ensured, and accurate buckling is realized. Therefore, the overall structural strength of the insulating member is effectively improved, the deformation of the insulating member is avoided, and the qualified rate of a production line can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to a top cover component, a battery and an electrical device. Background Art

[0002] At present, as a new type of battery, power batteries have broad application prospects in various fields such as power tools, portable appliances, and new energy vehicles. Compared with traditional batteries, they have many advantages such as high energy density, small size, light weight, and long cycle life. In the production process of power batteries, the insulating plate of the top cover assembly is often fixed to the cover plate by snapping. The existing insulating plate is usually designed with an insulating plate body and a wing structure, and the wing structure is snapped and fixed to the insulating plate body by folding the wing structure.

[0003] However, the disadvantage of the prior art is that when the top cover assembly is longer, it means that the length of the insulation board body and the wing structure will be longer; since the insulation board is mostly made of plastic structure, the plastic material has a certain degree of deformation, and the thickness is generally 0.8-1.0mm, if the length of the plastic structure is long and the width is narrow, the plastic structure is easy to deform. The deformation of the plastic structure will cause the position of the wing structure to deviate when the wings of the plastic structure are buckled by the machine during mass production, resulting in the wing structure being unable to buckle accurately, thereby affecting the yield of the production line. Utility Model Content

[0004] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a top cover assembly, a battery and an electrical device that can achieve precise snap fit of insulating components, increase the strength of the insulating components and avoid deformation of the insulating components.

[0005] In order to solve the above technical problems, the utility model provides a top cover assembly, comprising:

[0006] Cover plate;

[0007] A pole, arranged on the cover plate;

[0008] An insulating component is connected to the cover plate, the insulating component includes a first insulating component and a second insulating component, the second insulating component is rotatably connected to the first insulating component, the second insulating component is provided with at least one reinforcing component, and the reinforcing component includes a first reinforcing rib extending along a first direction of the second insulating component.

[0009] In an embodiment of the present invention, when the second insulating member is rotated to be opposite to the first insulating member, the reinforcing member is located between the first insulating member and the second insulating member.

[0010] In an embodiment of the present invention, the first reinforcing rib is arranged on the edge or the central axis of the second insulating member.

[0011] In an embodiment of the present invention, the number of the first reinforcing rib is one, and a first groove is provided on the first reinforcing rib.

[0012] In an embodiment of the present invention, there are multiple first reinforcing ribs, and the multiple first reinforcing ribs are arranged at intervals along the first direction. The first reinforcing ribs are provided with second grooves.

[0013] In one embodiment of the present invention, the reinforcement member further includes at least one second reinforcement rib, and the second reinforcement rib is extended along a second direction, and the second direction is arranged at an angle to the first direction.

[0014] In one embodiment of the present invention, the first reinforcing ribs and the second reinforcing ribs are intersected or staggered.

[0015] In an embodiment of the present invention, a through hole is further provided on the second insulating member, and the through hole is opposite to the pole. The reinforcing member further includes a third reinforcing rib, and the third reinforcing rib is provided along the edge of the through hole.

[0016] In an embodiment of the present invention, the first reinforcing rib is connected to the third reinforcing rib.

[0017] In one embodiment of the present invention, the height of the third reinforcing rib is lower than the height of the first reinforcing rib.

[0018] In an embodiment of the present invention, the reinforcement member further includes at least one fourth reinforcement rib, the extension direction of the fourth reinforcement rib is parallel to the first direction, and the fourth reinforcement rib is arranged at an edge of the second insulating member.

[0019] In one embodiment of the utility model, a positioning block is provided on the first insulating member, and a guide block is provided on the second insulating member. When the second insulating member rotates to be opposite to the first insulating member, the guide block is limited to the positioning block.

[0020] The utility model also provides a battery, comprising a shell, a battery cell and a top cover assembly as described above, wherein one end of the shell has an opening, the battery cell is accommodated in the shell, and the top cover assembly is assembled on the opening.

[0021] The utility model also provides an electrical device, comprising the battery as described above.

[0022] The above technical solution of the utility model has the following advantages compared with the prior art:

[0023] A top cover assembly described in the utility model is provided with a cover plate, a pole and an insulating component, wherein the insulating component includes a first insulating component and a second insulating component, wherein at least one first reinforcement component is provided on the second insulating component, and the first reinforcement component includes a first reinforcement rib arranged on the second insulating component, and the first reinforcement rib is extended along a first direction of the second insulating component, thereby effectively improving the structural strength of the second insulating component, especially when the size of the second insulating component is relatively narrow and long, the provision of the first reinforcement rib can effectively prevent the second insulating component from being deformed.

[0024] Therefore, when the top cover assembly is in the installed state, when the second insulating member is assembled to the first insulating member, the position of the second insulating member can be accurately guaranteed and the precise buckling can be achieved, thereby effectively increasing the overall structural strength of the insulating member and avoiding deformation of the insulating member, thereby effectively improving the qualified rate of the production line.

[0025] In addition, the utility model can provide a certain support for the pole ear when the pole ear is welded to the adapter, thereby avoiding pole ear redundancy and thus preventing short circuit caused by inverted insertion of the pole ear. The setting of the reinforcement member has a certain suppression and limiting effect on the pole ear, thereby improving the safety performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0027] Figure 1 It is a structural schematic diagram of a top cover assembly of a preferred embodiment of the utility model.

[0028] Figure 2 It is a structural schematic diagram of a first embodiment of the second insulating member of the insulating component of the top cover assembly of the preferred embodiment of the utility model.

[0029] Figure 3 It is a structural schematic diagram of a fifth embodiment of the second insulating member of the insulating component of the top cover assembly of the preferred embodiment of the utility model.

[0030] Figure 4 It is a structural schematic diagram of the sixth embodiment and the seventh embodiment of the second insulating member of the insulating component of the top cover assembly of the preferred embodiment of the utility model.

[0031] Figure 5 It is a structural schematic diagram of an eighth embodiment of the second insulating member of the insulating component of the top cover assembly of the preferred embodiment of the utility model.

[0032] Figure 6 It is a schematic cross-sectional structure diagram of a battery in a preferred embodiment of the utility model.

[0033] Figure 7 It is a three-dimensional structural schematic diagram of a battery according to a preferred embodiment of the utility model.

[0034] Figure 8 yes Figure 7 A magnified schematic diagram of the local structure.

[0035] Explanation of the reference numerals in the drawings in the specification: 1. first insulating member; 2. second insulating member; 31. first reinforcing rib; 32. second reinforcing rib; 33. third reinforcing rib; 34. fourth reinforcing rib; 4. through hole; 5. cover plate; 6. pole; 7. pole ear; 8. shell; 9. battery cell. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0037] Embodiment 1

[0038] Reference Figure 1 , Figure 7 as well as Figure 8 As shown, the utility model discloses a top cover assembly, including a cover plate 5 and a pole 6, wherein the pole 6 is arranged on the cover plate 5, and the pole 6 and the cover plate 5 are insulated from each other.

[0039] Combination Figure 2 As shown, the top cover assembly also includes an insulating member, and the insulating member is connected to the cover plate 5. Specifically, the insulating member includes a first insulating member 1 and a second insulating member 2. The first insulating member 1 is connected to the cover plate 5, and the second insulating member 2 is rotatably connected to the first insulating member 1. The second insulating member 2 is provided with at least one reinforcing member, and the reinforcing member includes a first reinforcing rib 31 extending along a first direction of the second insulating member 2. It should be noted that the first direction is the longitudinal extension direction of the second insulating member 2, and at the same time, the first direction is also in the same direction as the longitudinal extension direction of the first insulating member 1.

[0040] In detail, the insulating component has a pre-installation state and an installation state. When the insulating component is in the pre-installation state, the second insulating component 2 and the first insulating component 1 are in an unfolded state, the second insulating component 2 can rotate around the first insulating component 1, and the second insulating component 2 and the first insulating component 1 have any angle except zero degrees; when the insulating component is in the installation state, the second insulating component 2 rotates to be opposite to the first insulating component 1, and the second insulating component 2 can be assembled to the first insulating component 1, and the second insulating component 2 is buckled with the first insulating component 1.

[0041] It can be known from this that the top cover assembly to be protected by the utility model is provided with a cover plate, a pole and an insulating member, wherein the insulating member includes a first insulating member and a second insulating member, wherein the second insulating member is provided with at least one first reinforcing member, the first reinforcing member includes a first reinforcing rib provided on the second insulating member, and the first reinforcing rib is extended along the first direction of the second insulating member, thereby effectively improving the structural strength of the second insulating member, especially when the size of the second insulating member is relatively narrow and long, the provision of the first reinforcing rib can effectively prevent the deformation of the second insulating member, so that when the second insulating member is assembled to the first insulating member, the accuracy of the position of the second insulating member can be guaranteed, and precise buckling can be achieved. In addition, the overall structural strength of the insulating member is effectively increased, deformation of the insulating member is avoided, and the qualified rate of the production line can be effectively improved.

[0042] As a preferred implementation, for the purpose of saving space, when the second insulating member 2 is rotated to be opposite to the first insulating member 1 , the reinforcing member is located between the first insulating member 1 and the second insulating member 2 .

[0043] Specifically, the first insulating member 1 and the second insulating member 2 are connected by a buckle. The first insulating member 1 is provided with a buckle portion, and the second insulating member 2 is provided with a buckle portion matched with the buckle portion; or the first insulating member 1 is provided with a buckle portion, and the second insulating member 2 is provided with a buckle portion matched with the buckle portion.

[0044] In terms of details, the first insulating member 1 and the second insulating member 2 can be connected by screwing, riveting or ultrasonic connection, so that the first insulating member 1 and the second insulating member can be folded freely and can maintain a relatively stable connection.

[0045] As a preferred implementation, the first insulating member 1 and the second insulating member 2 may also be designed to be integrally formed, so that the first insulating member 1 and the second insulating member 2 form a whole and can reduce errors during assembly to a certain extent.

[0046] As a preferred embodiment, refer to Figure 2 As shown, the first reinforcing rib 31 is disposed on the central axis of the second insulating member 2. In this way, the strength of the second insulating member 2 is effectively enhanced, so that the second insulating member 2 is not easily deformed.

[0047] From the details, in order to facilitate the guidance and limiting during installation, the first insulating member 1 is provided with a positioning block 10, the second insulating member 2 is provided with a guiding block 20, and when the second insulating member 2 is rotated to be opposite to the first insulating member 1, the guiding block 20 can be limited to the positioning block 10. It should be noted that, in some embodiments, the positioning block 10 and the guiding block 20 do not contact each other, and in other embodiments, the positioning block 10 and the guiding block 20 can also abut against each other.

[0048] As a preferred embodiment, two positioning blocks 10 are provided opposite to each other, and two guide blocks 20 are provided opposite to each other. The distance between the two opposite surfaces of the two guide blocks 20 is slightly smaller than the distance between the two facing surfaces of the two positioning blocks 10. That is, when the second insulating member 2 is rotated to be opposite to the first insulating member 1, along the thickness direction of the first insulating member 1 or the second insulating member 2, the projections of the two positioning blocks 10 on the second insulating member 2 are respectively located on the outside of the two guide blocks 20. With this arrangement, when the second insulating member 2 is folded to be opposite to the first insulating member 1, the two guide blocks 20 and the two positioning blocks 10 can be used for guidance, thereby effectively preventing the insulating member from deforming when folded.

[0049] Embodiment 2

[0050] Different from the first embodiment, the first reinforcing rib 31 may also be arranged on the edge of the second insulating member 2 .

[0051] The first reinforcing rib 31 is arranged on one side edge of the second insulating member 2, and the first reinforcing rib 31 is also extended along the first direction. In this way, when the top cover assembly is assembled to the battery shell 8, the pole lug 7 of the battery cell 9 in the shell 8 extends from the other side edge of the second insulating member 2 and is electrically connected to the pole 6 or the adapter. At this time, the first reinforcing rib 31 can abut against the free end of the pole lug 7, so that the first reinforcing rib 31 can provide a certain supporting force for the pole lug 7. When the pole lug 7 is bent and ultrasonically welded to the adapter, the pole lug 7 can be supported to avoid uneven force on the pole lug 7 during welding, effectively avoid the collapse and inverted insertion of the pole lug 7, and improve the welding quality of the pole lug 7.

[0052] As a preferred embodiment, the side of the first reinforcing rib 31 in contact with the pole lug 7 has a smooth arc surface, so that when the side surface abuts against the pole lug 7, it can guide the pole lug 7 and prevent the pole lug 7 from being folded and damaged, and prevent the pole lug 7 from being inserted upside down.

[0053] Embodiment 3

[0054] Different from the first embodiment, in order to reduce the weight of the second insulating member 2 , reduce material waste and save costs, the number of the first reinforcing rib 31 is one, and a first groove is provided on the first reinforcing rib 31 .

[0055] Furthermore, the depth of the first groove is not greater than the height of the first reinforcing rib 31 .

[0056] Embodiment 4

[0057] Different from the third embodiment, there are multiple first reinforcing ribs 31, and the multiple first reinforcing ribs 31 are arranged in sequence along the first direction, and a second groove is provided on at least one of the first reinforcing ribs 31. Such an arrangement can reduce material waste and reduce the weight of the second insulating member 2.

[0058] In detail, the depth of the second groove is not greater than the height of the first reinforcing rib 31 .

[0059] Embodiment 5

[0060] Different from the first embodiment, Figure 3 In order to further strengthen the structural strength of the second insulating member 2, the reinforcing member further includes at least one second reinforcing rib 32, and the second reinforcing rib 32 is extended along a second direction, and the second direction is arranged at an angle to the first direction. Therefore, the first reinforcing rib 31 cooperates with the second reinforcing rib 32, so as to increase the structural strength of the second insulating member 2 in two directions.

[0061] Preferably, the second direction is perpendicular to the first direction.

[0062] Furthermore, the first reinforcing ribs 31 and the second reinforcing ribs 32 are intersected or staggered.

[0063] As a preferred embodiment, refer to Figure 3 As shown, a plurality of second reinforcing ribs 32 are provided, and a plurality of second reinforcing ribs 32 intersect with the first reinforcing ribs 31 .

[0064] In this way, the structural strength of the second insulating member 2 can be greatly enhanced, thereby effectively avoiding deformation of the second insulating member 2 and deviation when the second insulating member 2 is fastened with the first insulating member 1, thereby effectively improving the fastening accuracy.

[0065] Embodiment 6

[0066] Different from the first embodiment, when the top cover assembly is in the installed state, the pole 6 is located on the upper side of the cover plate 5, and the pole welding block is located on the inner side of the cover plate 5. When the pole 6 is designed to be a larger pole considering the overcurrent, the laser welding power of the adapter increases, so that a large amount of heat is generated during the welding process. In order to achieve a better heat dissipation effect, the second insulating member 2 is also provided with a through hole 4, referring to Figure 4 As shown, when the top cover assembly is in the installed state, the through hole 4 is opposite to the pole 6, so that when the second insulating member 2 is buckled with the first insulating member 1, the through hole 4 corresponds to the welding position of the pole 6 and the adapter, so that when the pole 6 and the adapter are laser welded, the through hole 4 can play a better heat dissipation role.

[0067] In addition, combined Figure 4 From the perspective of FIG. 4 , the reinforcement member further includes a third reinforcement rib 33 , and the third reinforcement rib 33 is arranged along the edge of the through hole 4 .

[0068] In detail, the third reinforcing rib 33 may be continuous and arranged around the edge of the fourth through hole 4 to form a closed loop structure; in some other embodiments, the third reinforcing rib 33 may also be a non-closed loop structure that is intermittently arranged.

[0069] Embodiment 7

[0070] As a preferred implementation of Example 6, refer to Figure 4 As shown, the first reinforcing rib 31 is connected to the third reinforcing rib 33 .

[0071] As a preferred embodiment, when the top cover assembly is assembled with the battery, considering that the third reinforcing rib 33 will contact the pole lug 7, the height of the third reinforcing rib 33 is lowered so that the height of the third reinforcing rib 33 is lower than the height of the first reinforcing rib 31, thereby preventing the third reinforcing rib 33 from crushing the pole lug 7.

[0072] Embodiment 8

[0073] Different from the first embodiment, Figure 5 From the perspective of the present invention, the reinforcement member further includes at least one fourth reinforcement rib 34 , the extension direction of the fourth reinforcement rib 34 is parallel to the first direction, and the fourth reinforcement rib 34 is arranged at the edge of the second insulating member 2 .

[0074] As a preferred embodiment, two fourth reinforcing ribs 34 are relatively arranged, so that when the pole ear 7 is bent and ultrasonically welded with the adapter, it can play a certain supporting role, so that the innermost side of the pole ear 7 will not collapse easily and cause inverted insertion; and when the cover plate is welded into the shell, the two fourth reinforcing ribs 34 can play a supporting role to avoid the pole ear 7 being redundant and causing inverted insertion. Therefore, the fourth reinforcing rib 34 has a certain degree of suppression and limiting effect on the pole ear 7, thereby improving the safety performance of the battery.

[0075] It should be noted that when the adapter plate and the pole 6 are laser welded, the fourth reinforcing rib 34 can enhance the structural strength of the second insulating member 2 and guide the pole ear 7, thereby preventing the second insulating member 2 from deforming when buckled with the first insulating member 1.

[0076] Furthermore, when the top cover assembly is in the installed state, after the second insulating member 2 is buckled with the first insulating member 1, the area between the first insulating member 1 and the second insulating member 2 will not bulge, and when assembled with the battery cell 9 and the shell 8, it can be ensured that after the battery cell 9 is put into the shell, the surface where the second insulating member 2 contacts the battery cell 9 is level, thereby improving the stability of the battery and increasing a certain amount of space inside the shell for the battery cell 9.

[0077] Embodiment 9

[0078] The utility model also discloses a battery, referring to Figure 6 , Figure 7 as well as Figure 8 As shown, the battery comprises a shell 8, a battery cell 9 and a top cover assembly as described in any one of Embodiments 1 to 8. One end of the shell 8 has an opening, the battery cell 9 is accommodated in the shell 8, and the top cover assembly is assembled in the opening.

[0079] From this, it can be seen that the battery using the top cover assembly can effectively improve the production qualification rate during the production process because the top cover assembly has good structural strength, and the battery can have a longer service life when put into use compared with existing batteries.

[0080] Embodiment 10

[0081] The utility model also discloses an electric device, wherein the electric device comprises a battery as described in the ninth embodiment, and the battery supplies power to the electric device.

[0082] It can be seen from this that electrical equipment using the battery can obtain relatively stable and lasting power supply.

[0083] Electrical equipment may be automobiles, portable devices, laptops, ships, spacecraft, electric toys, electric tools, and the like. Automobiles may be fuel-powered automobiles, gas-powered automobiles, or new energy automobiles. New energy automobiles may be pure electric vehicles, hybrid electric vehicles, or extended-range vehicles, and the like; spacecraft include airplanes, rockets, space shuttles, and spacecraft, and the like; electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, and the like; 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, and the like. The embodiments of the present invention do not impose any special restrictions on the above-mentioned electrical equipment.

[0084] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0085] In the description of the present utility model, it should be understood that 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 technical features indicated. Therefore, a feature defined as "first" or "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.

[0086] 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; it can be a direct connection, or it can be indirectly connected 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.

[0087] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A top cover assembly, characterized in that: include, Cover plate; A pole, arranged on the cover plate; An insulating component connected to the cover plate, the insulating component comprising a first insulating component (1) and a second insulating component (2), the second insulating component (2) being rotatably connected to the first insulating component (1), the second insulating component (2) being provided with at least one reinforcing component, the reinforcing component comprising a first reinforcing rib (31) extending along a first direction of the second insulating component (2).

2. A top cover assembly according to claim 1, characterized in that: When the second insulating member (2) is rotated to be opposite to the first insulating member (1), the reinforcing member (3) is located between the first insulating member (1) and the second insulating member (2).

3. A top cover assembly according to claim 1, characterized in that: The first reinforcing rib (31) is arranged on the central axis of the second insulating member (2).

4. A top cover assembly according to claim 1, characterized in that: The reinforcement member further comprises at least one second reinforcement rib (32), wherein the second reinforcement rib (32) is extended along a second direction, and the second direction is arranged at an angle to the first direction.

5. A top cover assembly according to claim 4, characterized in that: The first reinforcing ribs (31) and the second reinforcing ribs (32) are intersected or staggered.

6. A top cover assembly according to any one of claims 1 to 5, characterized in that: The second insulating member (2) is also provided with a through hole, the through hole being opposite to the pole, and the reinforcing member further comprises a third reinforcing rib (33), the third reinforcing rib (33) being arranged along the edge of the through hole.

7. A top cover assembly according to claim 6, characterized in that: The first reinforcing rib (31) is connected to the third reinforcing rib (33).

8. A top cover assembly according to claim 7, characterized in that: The height of the third reinforcing rib (33) is lower than the height of the first reinforcing rib (31).

9. A top cover assembly according to claim 1, characterized in that: The reinforcement member further comprises at least one fourth reinforcement rib (34), the extension direction of the fourth reinforcement rib (34) being parallel to the first direction, and the fourth reinforcement rib (34) being arranged at the edge of the second insulating member (2).

10. A top cover assembly according to claim 1, characterized in that: The first insulating member (1) is provided with a positioning block (10), and the second insulating member (2) is provided with a guide block (20); when the second insulating member (2) rotates to be opposite to the first insulating member (1), the guide block (20) is limited to the positioning block (10).

11. A battery, characterized in that: It comprises a shell, a battery cell and a top cover assembly as described in any one of claims 1 to 10, wherein one end of the shell has an opening, the battery cell is accommodated in the shell, and the top cover assembly is assembled on the opening.

12. An electrical equipment, characterized in that: Comprising a battery as claimed in claim 11.

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