CN219779095U - Battery box, battery and power consumption device - Google Patents

Abstract

The utility model discloses a battery box, a battery and an electric device. The frame comprises two first side beams arranged along a first direction, each first side beam extends along a second direction, and the first direction is intersected with the second direction. The second boundary beam is arranged between the two first boundary beams and connected with the two first boundary beams, at least one first boundary beam is clamped with the second boundary beam, and the second boundary beam is limited to move along the first direction and move along the second direction through the clamping. The second boundary beam is connected with the first boundary beam in a clamping way, and the installation efficiency is high. The second boundary beam is connected in a clamping mode to limit the movement of the second boundary beam relative to the first boundary beam along the first direction and the second direction, welding operation between the first boundary beam and the second boundary beam can be facilitated, and the assembly efficiency and the installation accuracy of the battery box body are improved, so that the production efficiency of a battery is improved.

Description

Battery box, battery and power consumption device

Technical Field

The utility model relates to the field of batteries, in particular to a battery box, a battery and an electric device.

Background

Batteries are widely used in various electronic devices such as mobile phones, notebook computers, battery cars, electric automobiles, electric airplanes, electric ships, electric tools, etc., and may include cadmium-nickel batteries, hydrogen-nickel batteries, lithium ion batteries, secondary alkaline zinc-manganese batteries, etc.

Currently, a new energy vehicle uses a battery as a power source to supply power to the vehicle. How to improve the assembly efficiency and the assembly precision of the battery box body is also one of the research directions in the field.

Disclosure of Invention

In view of the above, the present utility model provides a battery case, a battery, and an electric device, which can improve the assembly efficiency and the assembly accuracy of the battery case.

In a first aspect, the utility model provides a battery box body, which comprises a frame and a second side beam. The frame comprises two first side beams arranged along a first direction, each first side beam extends along a second direction, and the first direction is intersected with the second direction. The second boundary beam is arranged between the two first boundary beams and connected with the two first boundary beams, at least one first boundary beam is clamped with the second boundary beam, and the second boundary beam is limited to move along the first direction and move along the second direction through the clamping. One side of the first side beam, which faces the second side beam, is provided with a first groove, a positioning part protruding along the second direction is further arranged in the first groove, one side of the second side beam along the second direction is provided with a clamping groove, and the clamping groove is used for accommodating at least part of the positioning part.

In the technical scheme of the embodiment of the utility model, the frame is used for accommodating the battery cells and limiting the deformation of the battery cells. The second boundary beam is arranged between the two first boundary beams, so that the connection strength and the connection stability of the two first boundary beams are improved. The second boundary beam is connected with the first boundary beam in a clamping mode, the second boundary beam is limited to move along the first direction and the second direction relative to the first boundary beam in a clamping mode, welding operation between the first boundary beam and the second boundary beam can be facilitated, tool clamps are omitted, and material cost is reduced. And the manual labor is reduced, and the assembly efficiency and the installation accuracy of the battery box body are improved, so that the production efficiency of the battery is improved. In the above structure, by providing the first groove, at least a portion of the second side beam can be provided in the first groove, and the second side beam is restricted from moving along the second direction relative to the first side beam. And a positioning part is arranged in the first groove to limit the second side beam to move along the first direction relative to the first side beam.

In some embodiments, the number of second side beams is a plurality, the plurality of second side beams being spaced apart along the second direction. Through setting up a plurality of second boundary beams, can further improve the intensity of being connected between two first boundary beams, improve the structural stability of frame.

In some embodiments, the first side rail and the second side rail are welded together. The technical scheme can be used for fixedly connecting the first side beam and the second side beam, so that the structural strength of the battery box body is improved.

In some embodiments, the frame further includes two third side beams disposed opposite to each other along the second direction, two ends of the third side beams are respectively connected to the two first side beams, and the second side beam is disposed between the two third side beams. In the above technical scheme, set up the third boundary beam, connect in the tip of two first boundary beams, form the frame of battery box jointly with first boundary beam, improved the stability of frame structure.

In some embodiments, the battery case further includes a support beam, and two ends of the support beam are connected to the third side beam and the second side beam, respectively. In the technical scheme, the stability of connection between the second side beam and the first side beam is improved by arranging the supporting beam.

In some embodiments, the support beam and the first side beam are parallel to each other. In the technical scheme, the supporting beam is parallel to the first side beam, so that the stress balance of the second side beam is improved, and the stability of connection between the second side beam and the supporting beam is improved.

In some embodiments, the battery case further includes a cover plate having an opening and a bottom guard plate, and the frame is connected to a circumference of the opening. The bottom guard board and the frame and the cover board are enclosed together to form an accommodating space for accommodating the battery monomers. In the structure, through setting up the backplate, the backplate is connected with the frame at the bottom for support battery monomer, the backplate can form the protection to the battery monomer simultaneously, reduces external granule impurity or moisture and to the damage of battery monomer.

In a second aspect, the present utility model provides a battery comprising the battery case of the above embodiment.

In a second aspect, the present utility model provides an electrical device comprising a battery according to the above embodiments, the battery being configured to provide electrical energy.

The foregoing description is only an overview of the present utility model, and is intended to be implemented in accordance with the teachings of the present utility model in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present utility model more readily apparent.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic exploded view of a vehicle according to some embodiments of the present utility model;

fig. 2 is an exploded view of a battery according to an embodiment of the present utility model;

fig. 3 is an exploded view of a battery case according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a frame of a battery case according to an embodiment of the utility model;

FIG. 5 is an enlarged view of the circle A in FIG. 4;

FIG. 6 is a schematic view of the structure of the end of the second side sill according to an embodiment of the present utility model;

fig. 7 is a schematic structural view of a first groove of a first side rail according to an embodiment of the present utility model.

Detailed description of the reference numerals

1. A vehicle; 2. a battery; 3. a controller; 4. a motor; 5. a battery case; 51. an upper case; 52. a bottom guard board; 501. a frame; 502. a cover plate; 503. a second side rail; 504. a first side rail; 505. a third side rail; 506. a support beam; 507. a first groove; 508. a positioning part; 509. a clamping groove; 7. a battery cell; x, a first direction; y, second direction; z, third direction.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present utility model, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present utility model, the term "and/or" is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present utility model, the term "plurality" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

In the description of the embodiments of the present utility model, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present utility model.

In the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1 according to some embodiments of the utility model. The vehicle 1 can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extending vehicle. The interior of the vehicle 1 is provided with a battery 2, and the battery 2 may be provided at the bottom or at the head or at the tail of the vehicle 1. The battery 2 may be used for power supply of the vehicle 1, for example, the battery 2 may serve as an operating power source of the vehicle 1. The vehicle 1 may further comprise a controller 3 and a motor 4, the controller 3 being arranged to control the battery 2 to power the motor 4, for example for operating power requirements during start-up, navigation and driving of the vehicle 1.

In some embodiments of the utility model, the battery 2 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, providing driving power for the vehicle 1 instead of or in part instead of fuel oil or natural gas.

Referring to fig. 2, fig. 2 is an exploded view of a battery 2 according to an embodiment of the utility model. The battery 2 includes a battery case 5 and a battery cell 7, and the battery cell 7 is accommodated in the battery case 5. The battery box 5 is used for providing an accommodating space for the battery unit 7, and the battery box 5 can adopt various structures.

In some alternative embodiments, the battery case 5 includes an upper case 51 and a bottom guard plate 52, the upper case 51 and the bottom guard plate 52 are covered with each other, and the upper case 51 includes a frame 501 and a cover plate 502. Fig. 3 is a schematic exploded view of a battery case 5 according to an embodiment of the present utility model. The frame 501 and the bottom cover 52 together define an accommodation space for accommodating the battery cell 7. Illustratively, the upper case 51 may be a hollow structure having one end opened, the bottom guard plate 52 may be a support plate having a plate-like structure, and the bottom guard plate 52 is covered on the opened side of the upper case 51 such that the upper case 51 and the bottom guard plate 52 together define an accommodating space.

Alternatively, the upper case 51 and the bottom guard 52 may be hollow structures each having one side open, and the open side of the upper case 51 is closed to the open side of the bottom guard 52. Of course, the battery case 5 formed by the upper case 51 and the bottom cover 52 may be of various shapes, such as a cylinder, a rectangular parallelepiped, etc.

In the battery 2, the number of the battery cells 7 may be plural, and the plural battery cells 7 may be connected in series or parallel or in series-parallel, and the series-parallel refers to that the plural battery cells 7 are connected in series or parallel. The plurality of battery cells 7 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 7 is accommodated in the battery box 5. Of course, the battery 2 may also be a battery module form formed by connecting a plurality of battery cells 7 in series or parallel or series-parallel connection, and then connecting a plurality of battery modules in series or parallel or series-parallel connection to form a whole and be accommodated in the battery box 5. The battery 2 may also include other structures, for example, the battery may also include a bus member for making electrical connection between a plurality of battery cells.

Wherein each battery cell 7 may be a secondary battery or a primary battery; but not limited to, lithium sulfur batteries, sodium ion batteries, or magnesium ion batteries. The battery cell 7 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

In the related art, the frame of the battery box body comprises two frame beams which are oppositely arranged, and an extrusion beam which is arranged between the two frame beams, wherein two ends of the extrusion beam are respectively overlapped with the two frame beams. In the lap joint state, the extrusion beam can freely move relative to the frame beam. Therefore, the structure also needs to set a fixture between the frame beam and the extrusion beam to position the extrusion beam so as to limit the movement of the extrusion beam relative to the frame beam. And after the positioning is finished, welding operation is performed, so that the fixed connection between the frame beam and the extrusion beam is realized. The mode of fixed connection can resist the deformation of the battery monomer in the operation process, so that the extrusion of the extrusion beam caused by the deformation of the battery monomer is reduced. However, in the above-described assembly method, equipment such as a tool jig is required, and the cost is increased. And, consume more manpower and time cost, assembly efficiency is low.

Based on the above situation, the embodiment of the utility model provides a battery box body, which is provided with a frame for accommodating a battery monomer and limiting deformation of the battery monomer. The second boundary beam is arranged between the two first boundary beams, so that the connection strength and the connection stability of the two first boundary beams are improved. The second boundary beam is connected with the first boundary beam in a clamping mode, the second boundary beam is limited to move along the first direction and the second direction relative to the first boundary beam in a clamping mode, follow-up welding operation between the first boundary beam and the second boundary beam can be facilitated, tool clamps are omitted, material cost is reduced, and manual labor is reduced. And, assembly efficiency and the precision of installation of battery box have still been improved to improve the production efficiency of battery.

Referring to fig. 3 to 7 in combination, fig. 3 is an exploded view of a battery case 5 according to an embodiment of the utility model. Fig. 4 is a schematic structural diagram of a frame 501 of the battery case 5 according to an embodiment of the present utility model. Fig. 5 is an enlarged schematic view of the circle a in fig. 4. Fig. 6 is a schematic structural view of an end portion of a second side beam 503 according to an embodiment of the present utility model. Fig. 7 is a schematic structural diagram of the first groove 507 of the first side beam 504 according to an embodiment of the present utility model.

As shown in fig. 3 and 4, the present utility model provides a battery box 5, which includes a frame 501 and a second side beam 503. The frame 501 includes two first side beams 504 disposed along a first direction X, each first side beam 504 extending along a second direction Y, the first direction X intersecting the second direction Y. The second side beams 503 are disposed between the two first side beams 504 and connected to the two first side beams 504, at least one of the first side beams 504 is clamped with the second side beam 503, and movement of the second side beam 503 along the first direction X and movement along the second direction Y are limited by the clamping.

The first side beams 504 are two side frame beams arranged in parallel, and two ends of the second side beam 503 are respectively connected to the two first side beams 504. The second side beam 503 may extend in the first direction X. Alternatively, the first direction X is perpendicular to the first direction X, that is, the first side beam 504 and the second side beam 503 are disposed perpendicular to each other. In the above configuration, the strength of the connection between the first side sill 504 and the second side sill 503 can be improved. The process of clamping the first side beam 504 and the second side beam 503 may be that the second side beam 503 moves close to the first side beam 504 along the third direction Z, and is clamped and connected with the first side beam 504. The third direction Z may be a direction perpendicular to a plane in which the first direction X and the second direction Y lie.

The first side beam 504 is illustratively clamped with the second side beam 503, a clamping groove may be disposed on the first side beam 504, a clamping protrusion is disposed on the second side beam 503, and the clamping protrusion cooperates with the clamping groove to realize the clamping connection between the first side beam 504 and the second side beam 503. The connecting mode is simple in structure and convenient to assemble. It will be appreciated that, in addition to the first side beam 504, other side beams may be included in the side frame 501, where a plurality of side frame beams are interconnected with the first side beam 504 to form a structurally stable frame structure.

In the technical solution of the embodiment of the present utility model, the frame 501 is provided for accommodating the battery cell 7, and the frame 501 can be connected with other components, so as to fix the battery cell 7 to the other components. The second side beam 503 is arranged, and the second side beam 503 is positioned between the two first side beams 504, so that the connection strength and the connection stability of the two first side beams 504 can be improved. The second side beam 503 is connected with the first side beam 504 in a clamping way, so that the installation efficiency is high. The second boundary beam 503 is limited to move along the first direction X and the second direction Y relative to the first boundary beam 504 by the clamped connection, so that welding operation between the first boundary beam 504 and the second boundary beam 503 can be facilitated, the assembly efficiency and the installation accuracy of the battery box 5 are improved, and the production efficiency of the battery 2 is improved.

In some embodiments of the present utility model, the number of the second side beams 503 is plural, and the plural second side beams 503 are spaced apart along the second direction Y. By providing a plurality of second side beams 503, the strength of the connection between the two first side beams 504 can be further improved, and the structural stability of the frame 501 can be improved.

As shown in fig. 5 to 7, in some embodiments of the present utility model, a first groove 507 is disposed on a side of the first side beam 504 facing the second side beam 503, a positioning portion 508 protruding along the second direction Y is further disposed in the first groove 507, and a clamping groove 509 is disposed on a side of the second side beam 503 along the second direction Y, where the clamping groove 509 is configured to receive at least a portion of the positioning portion 508.

In the above-described structure, by providing the first groove 507, at least a portion of the second side rail 503 can be provided in the first groove 507, restricting the movement of the second side rail 503 in the second direction Y relative to the first side rail 504. Also, a positioning portion 508 is provided in the first groove 507 to restrict the second side beam 503 from moving relative to the first side beam 504 in the first direction X.

In some embodiments of the present utility model, the first side rail 504 and the second side rail 503 are connected by welding. The manner of welding connection can restrict the movement of the first side beam 504 relative to the second side beam 503 in the third direction Z, which intersects the plane in which the first direction X and the second direction Y lie.

In the above-described technical solution, the first side beam 504 and the second side beam 503 can be fixedly connected to each other, so that the structural strength of the battery case 5 can be improved.

In some embodiments of the present utility model, the battery case 5 further includes a sealing portion disposed between the first side rail 504 and the second side rail 503 and protruding from the side surfaces of the first side rail 504 and the second side rail 503 along the third direction Z, wherein the sealing portion is used to seal between the first side rail 504 and the second side rail 503.

In the above technical solution, the sealing between the first side beam 504 and the second side beam 503 is achieved by providing the sealing portion, so that the risk that the gap between the first side beam 504 and the second side beam 503 enters moisture and impurities is reduced, and the tightness of the battery case 5 is improved.

In some embodiments of the present utility model, the frame 501 further includes two third side beams 505 disposed opposite to each other along the second direction Y, two ends of the third side beams 505 are connected to the two first side beams 504, respectively, and the second side beam 503 is disposed between the two third side beams 505.

In the above technical solution, the third side beam 505 is disposed and connected to the ends of the two first side beams 504, and forms the frame 501 of the battery box 5 together with the first side beams 504, so that the stability of the structure of the frame 501 is improved, and the capability of the frame 501 for resisting the deformation of the battery unit 7 is enhanced.

In some embodiments of the present utility model, the battery case 5 further includes a support beam 506, and both ends of the support beam 506 are connected to the third side rail 505 and the second side rail 503, respectively.

Illustratively, the battery case 5 is further provided therein with electrical components such as a high voltage box, a controller, and the like. The above-described electric element is generally disposed in the space between the second side beam 503 and the third side beam 505. During operation of the battery 2, the battery cells 7 in the frame 501 are deformed by expansion, so that the second side beam 503 is pressed, and the second side beam 503 is pressed toward the third side beam 505. To ensure structural stability of the second side rail 503, a support beam 506 is provided to limit movement of the second side rail 503 relative to the first side rail 504. In summary, the above technical solution improves the stability of the connection between the second side beam 503 and the first side beam 504 by providing the supporting beam 506.

In some embodiments of the present utility model, the support beam 506 is parallel to the first side beam 504. In the above technical solution, the supporting beam 506 is parallel to the first side beam 504, so as to improve the stress balance of the second side beam 503, improve the stability of the connection between the second side beam 503 and the supporting beam 506, and enhance the ability of the frame 501 to resist the deformation of the battery cell 7.

In some embodiments of the present utility model, the battery case 5 further includes a cover plate 502 and a bottom protection plate 52, the cover plate 502 has an opening, and the frame 501 is connected to the circumference of the opening. The bottom cover plate 52 and the frame 501 and the cover plate 502 together enclose a receiving space for receiving the battery cells 7. In the above structure, through setting up the backplate 52, backplate 52 is connected with frame 501 for support battery cell 7, backplate 52 can form the protection to battery cell 7 simultaneously, reduces the damage of external granule impurity or moisture to battery cell 7.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a battery 2, which includes a battery case 5 in the above embodiment. The embodiment of the utility model also provides an electric device, which comprises the battery 2 in the embodiment, wherein the battery 2 is used for providing electric energy.

The battery 2 and the power consumption device in the embodiment of the utility model both comprise the battery box 5 in any of the above embodiments. A frame 501 is provided in the battery case 5 for accommodating the battery cell 7, and the frame 501 can be connected with other members so as to fix the battery cell 7 to the other members. Further, the frame 501 has a certain structural strength and is capable of resisting at least partial deformation of the battery cells 7. The second side beam 503 is arranged, and the second side beam 503 is positioned between the two first side beams 504, so that the connection strength and the connection stability of the two first side beams 504 can be improved. The second side beam 503 is connected with the first side beam 504 in a clamping way, so that the installation efficiency is high. The second boundary beam 503 is limited to move along the first direction X and the second direction Y relative to the first boundary beam 504 by the clamped connection, so that welding operation between the first boundary beam 504 and the second boundary beam 503 can be facilitated, the assembly efficiency and the installation accuracy of the battery box 5 are improved, and the production efficiency of the battery 2 is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present utility model is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (9)

1. A battery box (5), characterized by comprising:

a frame (501) comprising two first side beams (504) arranged along a first direction (X), each first side beam (504) extending along a second direction (Y), the first direction (X) intersecting the second direction (Y);

a second side beam (503) disposed between the two first side beams (504) and connected to the two first side beams (504), at least one first side beam (504) being clamped with the second side beam (503), and limiting movement of the second side beam (503) along the first direction (X) and movement along the second direction (Y) by the clamping,

a first groove (507) is formed in one side, facing the second side beam (503), of the first side beam (504), and a positioning part (508) protruding along the second direction (Y) is further arranged in the first groove (507);

the second side beam (503) is provided with a clamping groove (509) along one side of the second direction (Y), and the clamping groove (509) is used for accommodating at least part of the positioning part (508).

2. The battery box (5) according to claim 1, wherein the number of the second side beams (503) is plural, and the plural second side beams (503) are arranged at intervals along the second direction (Y).

3. The battery compartment (5) according to any one of claims 1-2, wherein the first side rail (504) and the second side rail (503) are welded together.

4. The battery box (5) according to any one of claims 1-2, wherein the frame (501) further comprises two third side beams (505) disposed opposite to each other along the second direction (Y), two ends of the third side beams (505) are respectively connected to two of the first side beams (504), and the second side beam (503) is disposed between two of the third side beams (505).

5. The battery box (5) according to claim 4, wherein the battery box (5) further comprises a support beam (506), and both ends of the support beam (506) are connected to the third side beam (505) and the second side beam (503), respectively.

6. The battery box (5) of claim 5, wherein the support beam (506) and the first side beam (504) are parallel to each other.

7. The battery box (5) according to claim 6, wherein the battery box (5) further comprises:

a cover plate (502) having an opening, the rim (501) being connected to a circumference of the opening;

and a bottom guard plate (52), wherein the bottom guard plate (52), the frame (501) and the cover plate (502) jointly enclose to form a containing space for containing the battery cells (7).

8. A battery (2), characterized by comprising:

the battery box (5) according to any one of claims 1-7;

and a battery unit (7) accommodated in the battery box (5).

9. An electric device, characterized in that it comprises a battery (2) as claimed in claim 8, said battery (2) being intended to supply electric energy.