CN218242190U - Switching piece, battery monomer, battery and power consumption device - Google Patents

Abstract

The application discloses switching piece, battery monomer, battery and power consumption device. The switching piece includes: the electrode terminal connecting part is used for connecting an electrode terminal, the tab connecting part is used for connecting a tab, the electrode terminal connecting part and the tab connecting part are electrically connected through the self-recovery safety part, and the self-recovery safety part is used for being in an open circuit state when the temperature is higher than a first temperature and recovering a conduction state when the temperature is lower than the first temperature; the insulating part is sleeved outside the self-recovery safety part. The utility model provides an among the adapter plate applied the battery monomer, the disconnection can protect electric core subassembly when the high temperature from recovering the insurable portion, recovers the intercommunication after the temperature recovers below the first temperature value, and electric core subassembly can continue to use.

Description

Switching piece, battery monomer, battery and power consumption device

Technical Field

The application relates to the field of batteries, in particular to a switching piece, a battery monomer, a battery and an electric device.

Background

With the increasing importance of environmental protection, electric vehicles are growing up rapidly in the vehicle industry due to their energy saving and environmental protection advantages. The electric vehicle adopts the battery as power supply equipment, is provided with the switching piece in the battery monomer of battery, and the switching piece is used for connecting electrode terminal and utmost point ear in the battery monomer, and the switching piece plays important effect to battery security and power supply stability.

The adapter plate is used for connecting the electrode terminal and is a first part, the adapter plate is used for connecting the electrode terminal and is a second part, the first part and the second part are connected through a safety part, and when the current flowing through the safety part is larger than a set value, the safety part is disconnected, so that the first part and the second part are disconnected and are not conducted, and the cell assembly in the cell is protected.

However, when the safety part is disconnected, the electric core assembly is disconnected and is not conducted any more, so that the electric core assembly cannot be used continuously.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, the application provides an adaptor sheet, a single battery, a battery and a power consumption device, which can solve the problem that the electric core assembly cannot be used continuously after the safety part is disconnected to a certain extent.

In a first aspect, the present application provides an interposer, comprising: the electrode terminal comprises an electrode terminal connecting part, a tab connecting part, a self-recovery safety part and an insulating part, wherein the electrode terminal connecting part is used for connecting an electrode terminal, the tab connecting part is used for connecting a tab, the electrode terminal connecting part and the tab connecting part are electrically connected through the self-recovery safety part, and the self-recovery safety part is used for being in an open circuit state when the temperature is higher than a first temperature and recovering to be in a conduction state when the temperature is lower than the first temperature; the insulating part is sleeved on the outer side of the self-recovery safety part.

The technical scheme of the embodiment of the application has the advantages that the self-recovery safety part is connected between the tab connecting part and the electrode terminal connecting part, so that the temperature of the self-recovery safety part is increased when the current is overlarge, the self-recovery safety part is disconnected when the temperature is higher than a first temperature value, a battery assembly can be protected, and the insulating part coated on the outer side of the self-recovery safety part can prevent electric arcs generated when the current is overlarge from damaging other parts in a battery unit; the self-recovery safety part recovers the electric connection between the tab connecting part and the electrode terminal connecting part after the temperature recovers to be lower than the first temperature value, so that the electric core assembly connected with the adapter sheet can be recovered for use, and the electric core assembly in the battery monomer with the overlarge current can be reused.

In some embodiments, the electrode terminal connection part, the self-restoring safety part, and the tab connection part are spaced apart in a first direction in which a length of the insulation part is greater than a length of the self-restoring safety part.

Because the insulating part cladding is in the outside of self-resuming insurance portion, and the length of insulating part is greater than the length of self-resuming insurance portion, consequently the insulating part will wrap up from resuming insurance portion completely to improve insulating sealed effect.

In some embodiments, a partial region of the insulation part is provided outside the electrode terminal connecting part.

The insulating part is coated on the outer side of the electrode terminal connecting part, so that the contact between the electrode lug and the electrode terminal connecting part due to assembly errors in the process of connecting the electrode lug and the electrode terminal connecting part can be avoided, and the assembly yield is improved.

In some embodiments, a partial region of the insulation part is provided outside the tab connection part.

Because the insulating part cover is established in the outside of utmost point ear connecting portion, consequently increased the spacing area of insulating part, except that carry on spacingly to the insulating part through self-resuming insurance portion, carry out further spacingly to the insulating part through utmost point ear connecting portion, improve the installation stability of insulating part.

In some embodiments, a side of the electrode terminal connecting part for connecting with an electrode terminal is a first side surface, a side of the electrode terminal connecting part facing away from the first side surface is a second side surface, and a length of an area where the insulating part is in contact with the first side surface is smaller than a length of an area where the insulating part is in contact with the second side surface in the first direction.

By further increasing the coverage area of the insulating part on the second side surface of the electrode terminal connecting part, the contact between the tab and the electrode terminal connecting part due to assembly errors in the process of connecting the tab and the tab connecting part can be avoided, and therefore the assembly yield is improved.

In some embodiments, the length of the self-restoring fuse portion is less than the length of the tab connection portion in a second direction, which is perpendicular to the first direction.

By reducing the length of the self-recovery fuse, the resistance of the self-recovery fuse is relatively greater, thereby facilitating a rapid temperature rise of the self-recovery fuse when the current is too large.

In the second direction, the length of the self-restoring safety part is one fourth to one half of the length of the tab connection part.

Within the size range, the length of the self-recovery safety part can ensure the reliable connection between the tab connection part and the electrode terminal connection part, and the temperature of the self-recovery safety part is convenient to rise quickly when the current is overlarge.

In some embodiments, the tab connection part includes a first connection body and a second connection body, which are respectively used to connect different tabs.

So set up, can connect two at least utmost point ears through an adaptor piece.

In some embodiments, the tab connection part further includes a third connection body, the first connection body and the second connection body are respectively connected to the third connection body, and the self-restoring fuse part is connected between the third connection body and the electrode terminal connection part.

Because the first connector and the second connector are both connected with the third connector, the tab connecting parts are connected into an integral structure, the manufacture is convenient, and after the third connector is connected with the self-recovery safety parts, the self-recovery safety parts can be arranged between the first connector and the electrode terminal connecting parts and between the second connector and the electrode terminal connecting parts.

In some embodiments, the number of the self-healing fuse parts is two, the first connection body is connected to the electrode terminal connection part through one of the self-healing fuse parts, and the second connection body is connected to the electrode terminal connection part through the other of the self-healing fuse parts.

Because the self-recovery safety parts corresponding to the first connecting body and the electrode terminal connecting part and the second connecting body and the electrode terminal connecting part are respectively arranged between the first connecting body and the electrode terminal connecting part, when the temperature of the self-recovery safety part is higher than a first temperature value due to overlarge current between one of the first connecting body and the second connecting body and the electrode terminal connecting part, so that the electric connection is disconnected, the other one of the first connecting body and the second connecting body and the electrode terminal connecting part still keep an electric connection state, and the work can still be continued.

In some embodiments, one side of the self-restoring fuse is connected to the electrode terminal connection part by a nickel plate, and the other side of the self-restoring fuse is connected to the tab connection part by a nickel plate.

The self-healing fuse part is preferably connected to the electrode terminal connection part and the tab connection part through the nickel plate.

In a second aspect, the present application further provides a battery cell, including: the electrode assembly comprises an electric core main body and a lug extending from the electric core main body; the electrode terminal connecting part of the adapter plate is electrically connected with the electrode terminal, and the tab connecting part of the adapter plate is electrically connected with the tab.

Since the battery cell includes the adapter sheet, all beneficial effects of the battery cell are at least included, and are not described herein again.

In some embodiments, the tab includes a positive tab and a negative tab, the electrode terminal includes a positive terminal and a negative terminal, the number of the adaptor pieces is two, the positive tab is connected with the positive terminal through one of the adaptor pieces, and the negative tab is connected with the negative terminal through the other adaptor piece.

Because the adapter sheet in the embodiment is connected between the positive electrode lug and the positive terminal, and the adapter sheet in the embodiment is connected between the negative electrode lug and the negative terminal, when an excessive current occurs in the battery cell, the adapter sheet between the positive electrode lug and the positive terminal and the adapter sheet between the negative electrode lug and the negative terminal are disconnected, so that double guarantee is provided for the electric core assembly.

In a third aspect, the present application provides a battery including the battery cell provided in the above embodiment.

Since the battery comprises the single battery, the battery at least has all the beneficial effects of the single battery, and the description is omitted here.

In a fourth aspect, the present application provides an electric device, which includes the battery cell in the above embodiments, and the battery cell is used for providing electric energy; alternatively, the first and second electrodes may be,

the electric device comprises the battery provided by the embodiment, and the battery is used for providing electric energy.

Since the electric device comprises the single battery or the battery, the electric device at least has all the beneficial effects of the single battery or the battery, and the description is omitted here.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

fig. 1 is a first exploded view of a battery cell according to some embodiments of the present disclosure;

FIG. 2 is a first schematic structural view of an interposer according to some embodiments of the present disclosure;

FIG. 3 is an exploded view of an interposer according to some embodiments of the present application;

FIG. 4 is a second schematic structural view of an interposer according to some embodiments of the present application;

FIG. 5 is a schematic cross-sectional view taken along line E-E of FIG. 4;

FIG. 6 is an enlarged view of a portion of FIG. 5 at F;

FIG. 7 is a schematic cross-sectional view of an interposer according to still other embodiments of the present application, taken along a first direction;

FIG. 8 is a third block diagram illustrating an interposer according to some embodiments of the present application;

fig. 9 is a fourth schematic structural view of an interposer of some embodiments of the present application;

fig. 10 is a fifth structural schematic view of an interposer of some embodiments of the present application;

fig. 11 is a schematic diagram illustrating an exploded structure of a battery cell according to some embodiments of the present application.

The reference numbers in the detailed description are as follows:

100. a patch; 110. an electrode terminal connection part; 111. a boss; 112. a groove; 120. a tab connecting part; 121. a first connecting body; 122. a second connector; 123. a third connector; 130. a self-recovery safety part; 140. an insulating section; 150. a nickel sheet;

210. an end cover plate; 211. mounting a plastic structure; 212. a lower plastic structure; 220. an electrode terminal; 231. a cell main body; 232. a tab; 240. a housing; 250. an explosion-proof valve;

300. a connecting plate.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two).

In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

With the increasing environmental pollution, the environmental awareness of people is gradually strengthened, and at the moment, the new energy industry rapidly rises, so that a wide space is provided for the application and development of secondary batteries such as lithium ion batteries. Lithium ion batteries have the characteristics of high energy density, long cycle life, good charge-discharge rate performance and the like, are widely applied, and more electric devices such as mobile phones, notebook computers, electric tools, electric automobiles and the like select the lithium ion batteries as power supplies, and people generally refer to secondary batteries used in the electric devices as power batteries. The power battery generally comprises a single battery body, the single battery body comprises an end cover plate and a battery cell main body, an electrode terminal is arranged on the end cover plate along the length direction, a tab is arranged on the battery cell main body, and the tab is connected with the electrode terminal through a switching piece. The adapter sheet is used for preventing the battery from being damaged or other parts from being burnt when the electrode assembly is in short circuit or over-charged and over-discharged, so that the use safety of the battery can be ensured. The applicant notices that at present, the switching piece is fused when the current is overlarge, and the fused switching piece enables the connection between the electrode terminal and the lug to be disconnected, so that the cell main body is protected. However, the fused interposer also makes the cell main body unable to be reused, that is, makes the maintainability of the battery cell poor, that is, the current is too large, which may cause one or more cell main bodies to be unable to be used continuously, and affects the use of the subsequent battery cell.

Based on the above consideration, in order to solve the problem that the adapter sheet can not be used continuously after being fused, thereby affecting the use of the battery cell using the adapter sheet, the inventor designs an adapter sheet through intensive research, wherein the adapter sheet comprises an electrode terminal connecting part, a tab connecting part, a self-recovery safety part and an insulating part, the electrode terminal connecting part is used for connecting an electrode terminal, the tab connecting part is used for connecting a tab, the electrode terminal connecting part and the tab connecting part are electrically connected through the self-recovery safety part, the self-recovery safety part is used for enabling the electrode terminal connecting part and the tab connecting part to be in a non-conduction state when the temperature is higher than a first temperature value, and enabling the electrode terminal connecting part and the tab connecting part to be in a conduction state when the temperature is lower than the first temperature value; the insulation part is sleeved outside the self-recovery safety part. The adapter sheet can be applied to a single battery and is used for connecting a tab and an electrode terminal in the single battery, and a self-recovery safety part is connected between the tab connecting part and the electrode terminal connecting part, so that the temperature of the self-recovery safety part rises when the current is too high, the core assembly can be protected by disconnecting the self-recovery safety part when the temperature is higher than a first temperature value, and an insulating part coated on the outer side of the self-recovery safety part can prevent electric arcs generated when the current is larger than a set value from damaging other components in the single battery; the self-recovery safety part recovers the electric connection between the tab connection part and the electrode terminal connection part after the temperature recovers below a first temperature value, so that the electric core assembly connected with the adapter sheet can be recovered for use, and the electric core assembly in the battery cell with overlarge current can be reused.

The adapter sheet disclosed by the embodiment of the application can be used for all battery cells, batteries comprising the battery cells and electric devices comprising the batteries, but is not limited to the battery cells, and can also be used for fusing protection of other products in case of short circuit or excessive current by utilizing the adapter sheet disclosed by the application, and freedom and operable space can be added for product design.

In the embodiment of the present application, the battery cell is the smallest unit constituting the battery. As shown in fig. 1, the battery cell includes a housing 240, an end cap assembly, a core assembly, an interposer 100, and other functional components.

The housing 240 is an assembly for mating with the end cap assembly to form an internal environment of the battery cell for housing the electrical core assembly, electrolyte, interposer 100, and other components.

The end cap assembly includes an end cap plate 210 and an electrode terminal 220, and the end cap plate 210 refers to a member that is fitted into an opening of a case 240 to insulate the internal environment of the battery cell from the external environment. The electrode terminal 220 is used to electrically connect with the electric core assembly to output or input electric energy to the battery cell. The electrode terminals 220 include positive and negative terminals that are spaced apart in a first direction (the length direction of the cell unit, a-B direction in the drawing). The end cap assembly may further include an explosion-proof valve 250, the explosion-proof valve 250 being disposed on the end cap plate 210, the explosion-proof valve 250 being used to vent the internal pressure of the battery cell when the internal pressure or temperature reaches a threshold value. In the first direction, the positive and negative terminals may be located on both sides of the explosion-proof valve 250 or on the same side of the explosion-proof valve 250, respectively.

The cell assembly is a component in which electrochemical reactions occur in the battery cell, and one or more cell assemblies may be contained in the housing 240, and the cell assembly is mainly formed by winding or stacking a positive plate and a negative plate, and a separator is generally disposed between the positive plate and the negative plate. The portions of the positive and negative plates having the active material constitute the cell main body 231 of the cell assembly, and the portions of the positive and negative plates having no active material each constitute the tab 232. During the charge and discharge of the battery, the positive and negative active materials react with the electrolyte, and the tab 232 is electrically connected to the electrode terminal 220 to form a current loop. The tabs 232 include a positive tab for connection to a positive terminal and a negative tab for connection to a negative terminal.

Specifically, the battery cell is placed in a planar table, and when the end cover plate 210 is located above, the battery cell is taken as a reference position, the vertical direction is the height direction of the battery cell, in the plane where the end cover plate 210 is located, the arrangement direction of the positive terminal and the negative terminal is the first direction (a-B direction in the drawing), the length direction of the battery cell is also taken as the second direction (C-D direction in the drawing), and the direction perpendicular to the length direction is also taken as the width direction of the battery cell. The height direction, the width direction and the length direction are vertical to each other.

As shown in fig. 1 to 3, an embodiment of the present application provides an interposer 100 for a battery cell, including: the electrode terminal comprises an electrode terminal connecting part 110, a tab connecting part 120, a self-recovery safety part 130 and an insulating part 140, wherein the electrode terminal connecting part 110 is used for connecting an electrode terminal 220, the tab connecting part 120 is used for connecting a tab 232, the electrode terminal connecting part 110 and the tab connecting part 120 are electrically connected through the self-recovery safety part 130, and the self-recovery safety part 130 is used for enabling the electrode terminal connecting part 110 and the tab connecting part 120 to be in a non-conduction state when the temperature is higher than a first temperature value and enabling the electrode terminal connecting part 110 and the tab connecting part 120 to be in a conduction state when the temperature is lower than the first temperature value; the insulation part 140 is sleeved outside the self-recovery safety part 130.

The tab connection portion 120 is a structure for connection to the tab 232 in the interposer 100.

The electrode terminal connecting part 110 is a structure for connecting the electrode terminal 220 in the interposer 100.

The self-recovery fuse 130 includes a self-recovery structure that is capable of increasing in temperature when the current is excessive, and making the current unable to pass when the temperature is higher than a first temperature value, and making the current conductive when the temperature is lower than the first temperature value. The current is excessive, specifically, the current is larger than a set current value. In one possible embodiment, the self-healing fuse 130 may be a self-healing fuse, and the self-healing fuse 130 includes a conductive polymer having both ends connected to the tab connection part 120 and the electrode terminal connection part 110, respectively, and the conductive polymer is a structure in which a polymer and conductive particles are agitated and combined into one body. At a temperature lower than the first temperature value, the polymer is in a crystalline state, and conductive particles in the polymer in the crystalline state constitute a conductive network, thereby electrically connecting the tab connection part 120 and the electrode terminal connection part 110. When the current flowing through the conductive polymer is excessive, the excessive current increases the temperature of the conductive polymer, and the polymer is transformed from a crystalline state to an amorphous state, which causes the polymer to expand, so that the distance between adjacent conductive particles located within the polymer increases, that is, the conductive network formed by the conductive particles is broken, and thus the tab connection part 120 and the electrode terminal connection part 110 are disconnected, that is, the electrical connection between the tab connection part 120 and the electrode terminal connection part 110 is broken. When the temperature returns to be lower than the first temperature value, the polymer can be recrystallized, so that the conductive particles in the polymer can be reconstructed into a conductive network, and current conduction is realized.

The insulation part 140 is made of an insulation material and is wrapped on the outer side of the self-recovery safety part 130, when the current is large, the electric arc is easily generated at the self-recovery safety part 130, and the insulation part 140 can prevent the electric arc from radiating to the outer side of the adapter sheet 100, so that the electric arc can be prevented from damaging other structures in the single battery. The insulating part 140 may be made of a high temperature resistant material, such as PFA (Perfluoroalkoxy, meltable polytetrafluoroethylene), which is a copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene and can still normally operate at 500 ℃, or PP (polypropylene), which can still normally operate at 300 ℃ to 400 ℃. The insulation part 140 may be a sleeve-shaped structure separately manufactured and sleeved outside the self-healing fuse 130. Alternatively, the insulation part 140 may be wrapped outside the self-healing fuse 130 by injection molding during the manufacturing process, for example, the following steps may be performed: the mold for manufacturing the insulating part 140 comprises a first mold and a second mold, the adapter sheet 100 without the insulating part 140 is placed in the first mold, the second mold is buckled on the first mold, injection molding grooves are formed in the first mold and the second mold, the injection molding grooves of the first module and the second mold are communicated to form an injection molding cavity, the fusing part of the adapter sheet 100 is located in the injection molding cavity, the insulating part 140 is formed by injection molding in the injection molding cavity, and the formed insulating part 140 is wrapped outside the self-recovery safety part 130.

In the technical solution of the embodiment of the present application, since the self-recovery safety portion 130 is connected between the tab connection portion 120 and the electrode terminal connection portion 110, the temperature of the self-recovery safety portion 130 rises when the current is too large, and the self-recovery safety portion 130 is disconnected when the temperature is higher than the first temperature value so as to protect the cell assembly, and the insulating portion 140 coated outside the self-recovery safety portion 130 can prevent the electric arc generated when the current is too large from damaging other components in the cell; the self-recovery safety part 130 recovers the electrical connection between the tab connection part 120 and the electrode terminal connection part 110 after the temperature is recovered to be lower than the first temperature value, so that the electrical core assembly connected with the interposer 100 can be recovered for use, and the electrical core assembly in the battery cell with the excessive current can be reused.

As shown in fig. 4, in some embodiments, the electrode terminal connection part 110, the self-healing fuse part 130, and the tab connection part 120 are spaced apart in a first direction in which the length of the insulation part 140 is greater than the length of the self-healing fuse part 130, as shown in fig. 5 to 7.

The length of the insulating part 140 and the length of the self-healing fuse 130 are the lengths of the opposite regions, that is, the length of the insulating part 140 is greater than the length of the self-healing fuse 130 covered by the insulating part. Since the shape of the insulating part 140 is not limited to a regular shape such as a rectangle, the size of the insulating part 140 in the first direction and the size of the insulating part 140 in the second direction may not be consistent everywhere, that is, the length is not limited to the length of the insulating part 140 in the first direction as a unique fixed value, and different regions of the insulating part 140 may have a plurality of different length values in the first direction, for example, the length near the edges is relatively larger and the length near the middle is relatively smaller in the width direction of the battery cell. But it is possible to ensure that the self-healing fuse 130 is completely covered by the insulation 140.

Since the insulation part 140 is wrapped at the outer side of the self-healing fuse part 130, and the length of the insulation part 140 is greater than that of the self-healing fuse part 130, the insulation part 140 wraps the self-healing fuse part 130 completely to improve the insulation sealing effect.

Since the length of the insulation part 140 is greater than that of the self-healing fuse 130 and both ends of the self-healing fuse 130 are connected to the electrode terminal connection part 110 and the tab connection part 120, respectively, at least a partial region of the insulation part 140 is in contact with one of the electrode terminal connection part 110 and the tab connection part 120.

For example, when the tab connection part 120 is formed in a flat plate shape to be connected to the self-healing fuse 130 and the electrode terminal connection part 110 is formed in a flat plate shape to be connected to the self-healing fuse 130, the insulation part 140 completely covers the region outside the self-healing fuse 130. In one possible embodiment, the insulation part 140 may be in surface contact with only one side of at least one of the electrode terminal connecting part 110 and the tab connecting part 120, that is, the insulation part 140 may be in surface contact with only one side of the electrode terminal connecting part 110, or the insulation part 140 may be in surface contact with both sides of the electrode terminal connecting part 110, or the insulation part 140 may be in surface contact with one side of the tab connecting part 120, or the insulation part 140 may be in surface contact with both sides of the electrode terminal connecting part 110 and one side of the tab connecting part 120, or the insulation part 140 may be in surface contact with both sides of the electrode terminal connecting part 110 and both sides of the tab connecting part 120.

In another possible embodiment, the insulation part 140 may be in contact with only at least one edge of at least one of the electrode terminal connecting part 110 and the tab connecting part 120, that is, the insulation part 140 may be in contact with only one side edge of the electrode terminal connecting part 110, or the insulation part 140 may be in contact with both side edges of the electrode terminal connecting part 110, or the insulation part 140 may be in contact with one side edge of the tab connecting part 120, or the insulation part 140 may be in contact with both side edges of the electrode terminal connecting part 110 and both side edges of the tab connecting part 120.

In yet another possible embodiment, the insulation part 140 may be annularly wrapped around the outside of at least one of the electrode terminal connection part 110 and the tab connection part 120. For example:

as shown in fig. 3, 5 to 7, in some embodiments, a partial region of the insulation part 140 is provided outside the electrode terminal connecting part 110.

In this arrangement, a partial region of the insulating part 140 is located outside the self-healing fuse 130, and another partial region is located outside a partial region of the electrode terminal connecting part 110. The structure in which the insulation part 140 is fitted around the outside of the electrode terminal connecting part 110 is annular to wrap the outer circumference of the region where the electrode terminal connecting part 110 is connected to the self-healing fuse part 130, thereby increasing the contact area between the insulation part 140 and the electrode terminal connecting part 110, and improving the installation stability of the insulation part 140, and by wrapping the insulation part 140 outside the electrode terminal connecting part 110, it is possible to prevent the tab 232 from contacting the electrode terminal connecting part 110 due to assembly errors in the process of connecting the tab connecting part 120, thereby improving the assembly yield.

In some possible embodiments, as shown in fig. 6, the insulating part 140 may have the same length in the first direction at regions surrounded outside the electrode terminal connecting part 110.

Alternatively, as shown in fig. 7, the insulating part 140 may not have the same length in the first direction at regions around the outside of the electrode terminal connecting part 110. For example, as shown in fig. 7, in some embodiments, a side of the electrode terminal connecting part 110 for connecting with the electrode terminal 220 is a first side surface, and a side of the electrode terminal connecting part 110 facing away from the first side surface is a second side surface, and in the first direction, a length of an area where the insulating part 140 contacts with the first side surface is smaller than a length of an area where the insulating part 140 contacts with the second side surface.

The third side surface of the tab connection part 120, which is located on the same side as the first side surface of the electrode terminal connection part 110, and the fourth side surface of the tab connection part 120, which is located on the same side as the second side surface of the electrode terminal connection part 110, are referred to as fourth side surfaces, so that the fourth side surfaces of the tab connection part 120 are used for being connected with the tab 232, that is, in the tab 232 connection process, the tab 232 may contact with the second side surface of the electrode terminal connection part 110, and it is difficult for the tab 232 to contact with the first side surface of the electrode terminal connection part 110. Therefore, in the case where the tab 232 may be in contact with the second side of the electrode terminal connecting part 110, the coverage area of the insulating part 140 at the second side is increased, thereby further reducing the possibility that the tab 232 is in contact with the second side of the electrode terminal connecting part 110 to prevent the tab 232 from being directly electrically connected with the electrode terminal connecting part 110.

In other exemplary embodiments, a partial region of the insulation part 140 is provided on the outside of the tab connection part 120.

Referring to fig. 6 and 7, in this arrangement, a partial region of the insulation part 140 is disposed outside the self-healing fuse 130, and another partial region is disposed outside a partial region of the tab connection part 120. The structure that insulating part 140 cover was established in the outside of utmost point ear connecting portion 120 is the annular to the outside a week in the region that parcel utmost point ear connecting portion 120 and self-resuming insurance portion 130 link to each other makes the area of contact increase between insulating part 140 and the utmost point ear connecting portion 120, thereby has improved the installation stability of insulating part 140. That is, since the insulation part 140 is fitted around the outside of the tab connection part 120, a limit area of the insulation part 140 is increased, and the insulation part 140 is further limited by the tab connection part 120 in addition to the limitation of the insulation part 140 by the self-restoring safety part 130, thereby improving the mounting stability of the insulation part 140.

The self-restoring fuse 130, by its own material properties, causes it to increase in temperature when the current is excessive. Further, the temperature increase rate of the self-restoring fuse 130 can also be increased by reducing the flow area of the self-restoring fuse 130. There are various ways to reduce the flow area of the self-restoring fuse 130, such as forming a groove or a hole in the self-restoring fuse 130, reducing the length of the self-restoring fuse 130 in the second direction, and reducing the thickness of the self-restoring fuse 130.

In some embodiments, as shown in fig. 8, the length of the self-restoring fuse 130 in the second direction is smaller than that of the tab connecting portion 120, in this arrangement, the resistance of the self-restoring fuse 130 is relatively larger by reducing the length of the self-restoring fuse 130 in the second direction, so that the temperature of the self-restoring fuse 130 is increased faster when the current is too large, and the circuit breaking is realized when the self-restoring fuse 130 is higher than the first temperature value.

Referring to fig. 8, in some embodiments, the length of the self-restoring fuse 130 is one fourth to one half of the length of the tab connecting part 120 in the second direction.

In such a size range, the self-restoring safety portion 130 may ensure a certain structural strength, that is, a reliable connection between the tab connection part 120 and the electrode terminal connection part 110 through the self-restoring safety portion 130, and the self-restoring safety portion 130 facilitates a rapid increase in temperature of the self-restoring safety portion 130 when an electric current is excessively large in such a size range.

Compared with the arrangement mode of using the slots or the holes, the length of the self-recovery safety part 130 in the second direction is reduced, so that the self-recovery safety part 130 is convenient to manufacture, the processing steps are reduced, and the processing efficiency is improved.

Since a plurality of tabs 232 can be connected to one electrode terminal 220 in a single battery cell, the tab connection part 120 may be used to connect only one tab 232 or a plurality of tabs 232. For example, when one electrode terminal 220 is used to connect two tabs 232 and the tab connection part 120 is used to connect two tabs 232, in one embodiment, the tab connection part 120 may be an integral structure, the tab connection part 120 is connected to two tabs 232 at the same time, and the tab connection part 120 is located at one side of the electrode terminal connection part 110 along the first direction; as shown in fig. 8 to 10, in another embodiment, the tab connection part 120 includes a two-part structure, which is referred to as a first connector 121 and a second connector 122, respectively, and the first connector 121 and the second connector 122 are used to connect different tabs 232, respectively.

So configured, at least two tabs 232 can be connected by one interposer 100. The first connection body 121 may be connected to one or more tabs 232, and the second connection body 122 may be connected to another one or more tabs 232.

The first and second connection bodies 121 and 122 may be located at different sides of the electrode terminal connecting part 110, respectively, and the first and second connection bodies 121 and 122 may also be located at the same side of the electrode terminal connecting part 110.

The first connecting body 121 and the second connecting body 122 may be two separate structures or may be an integral structure.

When the first connecting body 121 and the second connecting body 122 are an integral structure, the first connecting body 121 and the second connecting body 122 may be connected together at one end. Alternatively, as shown in fig. 8 and 9, in some embodiments, the tab connecting part 120 further includes a third connecting body 123, the first and second connecting bodies 121 and 122 are connected to the third connecting body 123, respectively, and a self-restoring fuse 130 is connected between the third connecting body 123 and the electrode terminal connecting part 110. The first connecting body 121, the second connecting body 122 and the third connecting body 123 may be formed by an integral forming process, for example, by cutting a plate, and the first connecting body 121, the second connecting body 122 and the third connecting body 123 are names of different areas of the plate formed by cutting, and are not necessarily different in structure.

Since the first connecting body 121 and the second connecting body 122 are both connected to the third connecting body 123, the tab connecting portion 120 is connected to form an integral structure, which is convenient for manufacturing, and after the third connecting body 123 is connected to the self-restoring safety portion 130, the self-restoring safety portions 130 are disposed between the first connecting body 121 and the electrode terminal connecting portion 110, and between the second connecting body 122 and the electrode terminal connecting portion 110.

One self-restoring safety part 130 may be provided between the third connecting body 123 and the electrode terminal connecting part 110, and two or more self-restoring safety parts 130 may be provided. As shown in fig. 8, when the number of the self-restoring cutouts 130 is one, the partial self-restoring cutouts 130 are provided in the region where the third connecting body 123 faces the first connecting body 121, and the partial self-restoring cutouts 130 are provided in the region where the third connecting body 123 faces the second connecting body 122. As shown in fig. 9, when the number of the self-restoring cutouts 130 is plural, at least one self-restoring cutout 130 is provided in a region of the third connecting body 123 facing the first connecting body 121, and at least one self-restoring cutout 130 is provided in a region of the third connecting body 123 facing the second connecting body 122.

Since the self-recovery securing parts 130 are respectively disposed between the first connecting body 121 and the electrode terminal connecting part 110, and between the second connecting body 122 and the electrode terminal connecting part 110, when the electrical connection between one of the first connecting body 121 and the second connecting body 122 and the electrode terminal connecting part 110 is broken due to the current greater than the threshold value, the other of the first connecting body 121 and the second connecting body 122 and the electrode terminal connecting part 110 still maintain the electrical connection state, and the operation can still be continued.

As shown in fig. 10, in some embodiments, the first connection body 121 and the second connection body 122 are two separate structures, and the first connection body 121 and the second connection body 122 may be connected to the electrode terminal connection part 110 through the same self-healing fuse 130, or the number of the self-healing fuses 130 is two, and the first connection body 121 is connected to the electrode terminal connection part 110 through one self-healing fuse 130, and the second connection body 122 is connected to the electrode terminal connection part 110 through the other self-healing fuse 130.

Since the self-recovery securing parts 130 are respectively disposed between the first connecting body 121 and the electrode terminal connecting part 110, and between the second connecting body 122 and the electrode terminal connecting part 110, when the electrical connection is broken due to an excessive current flowing between one of the first connecting body 121 and the second connecting body 122 and the electrode terminal connecting part 110, the other of the first connecting body 121 and the second connecting body 122 and the electrode terminal connecting part 110 are still electrically connected, and the operation can still be continued.

As shown in fig. 6, in some embodiments, one side of the self-restoring fuse 130 is connected to the electrode terminal connecting part 110 through a nickel plate 150, and the other side of the self-restoring fuse 130 is connected to the tab connecting part 120 through a nickel plate 150.

The nickel plate 150 facilitates better connection of the self-restoring fuse 130 with the electrode terminal connection part 110 and facilitates better connection of the self-restoring fuse 130 with the tab connection part 120.

The thickness of the nickel plate 150 is the same as that of the self-healing fuse 130. In the second direction, the length of the nickel plate 150 is the same as the length of the self-healing fuse 130. In the first direction, the length of the nickel plate 150 is less than the length of the self-healing fuse 130.

In the connection process, a nickel material in a molten state is coated between the self-healing fuse 130 and the electrode terminal connecting part 110 such that the nickel material is in contact with the self-healing fuse 130 and the electrode terminal connecting part 110, respectively, to form nickel pieces 150 after the nickel material is solidified, and the nickel pieces 150 are connected with the self-healing fuse 130 and the electrode terminal connecting part 110, respectively. Similarly, a nickel material in a molten state is applied between the self-healing fuse 130 and the tab connection part 120 such that the nickel material is in contact with the self-healing fuse 130 and the tab connection part 120, respectively, and the nickel pieces 150 are formed after the nickel material is solidified, and the nickel pieces 150 are connected to the self-healing fuse 130 and the tab connection part 120, respectively.

As shown in fig. 1 and 3 to 11, an embodiment of the present application provides a battery cell including: the electrode terminal 220, the cell assembly and the adaptor sheet 100 in the above embodiment, the cell assembly includes a cell main body 231 and a tab 232 extending from the cell main body 231; the electrode terminal connection portion 110 of the interposer 100 is electrically connected to the electrode terminal 220, and the tab connection portion 120 of the interposer 100 is electrically connected to the tab 232.

The battery cell may be used in an electric device using a battery as a power source or various energy storage systems using a battery as an energy storage element.

Because the battery cell comprises the adapter sheet 100, the self-recovery safety part 130 is connected between the tab connecting part 120 and the electrode terminal connecting part 110 in the adapter sheet 100, the temperature of the self-recovery safety part 130 is increased when the current is overlarge, and the self-recovery safety part 130 is disconnected when the temperature is higher than a first temperature value so as to protect the battery cell assembly, and the insulating part 140 coated on the outer side of the self-recovery safety part 130 can prevent electric arcs generated when the current is overlarge from damaging other parts in the battery cell; the self-recovery safety part 130 recovers the electrical connection between the tab connection part 120 and the electrode terminal connection part 110 after the temperature is recovered to be lower than the first temperature value, so that the electrical core assembly connected with the interposer 100 can be recovered for use, and the electrical core assembly in the battery cell with the excessive current can be reused.

The connection between the tab 232 and the tab connection part 120 may be ultrasonic welding, and the connection between the electrode terminal 220 and the electrode terminal connection part 110 may be laser welding.

In the interposer 100 connected between the positive electrode sheet and the positive terminal, the tab connection part 120 and the electrode terminal connection part 110 may be each made of an aluminum plate. In the interposer 100 connected between the negative electrode sheet and the negative terminal, the tab connection part 120 and the electrode terminal connection part 110 may be made of copper plates.

In some embodiments, the tabs 232 include a positive tab and a negative tab, the electrode terminals 220 include two positive terminals and two negative terminals, the positive tab and the positive terminal are connected through one of the tabs 100, and the negative tab and the negative terminal are connected through the other tab 100.

It should be noted that, in two interposer 100, only one of the interposer 100 provided in the above embodiments may be used, and the other interposer 100 in the conventional technology may be used, and for the sake of convenience of distinction, the interposer 100 in the conventional technology is referred to as a connection board 300. As shown in fig. 11, the negative electrode tab and the negative terminal are connected by a connection plate 300, and the positive electrode tab and the positive terminal are connected by an interposer 100. In other arrangements, the positive electrode tab and the positive terminal may be connected by a connection plate 300, and the negative electrode tab and the negative terminal may be connected by an interposer 100.

Alternatively, in some embodiments, as shown in fig. 1, both interposer wafers may employ the interposer wafer 100 provided in the above embodiments. Because the adapter sheet 100 in the above embodiment is connected between the positive electrode tab and the positive terminal, and the adapter sheet 100 in the above embodiment is connected between the negative electrode tab and the negative terminal, when an excessive current occurs in a battery cell, the circuit of the adapter sheet 100 between the positive electrode tab and the positive terminal and the circuit of the adapter sheet 100 between the negative electrode tab and the negative terminal are disconnected, so that a dual guarantee is provided for the electric core assembly.

In some embodiments, the battery cell further includes a housing 240 and an end cap assembly including the end cap plate 210 and the electrode terminal 220 described above, the electrode terminal 220 being mounted on the end cap plate 210. The electrode terminals 220 include positive and negative terminals that are spaced apart in a first direction.

The position of the electrode terminal 220 on the end cap plate 210 is related to the structure of the electrode terminal connecting portion 110 of the interposer, when the end cap plate 210 is covered on the top of the housing 240 and the electrode terminal 220 protrudes from the end surface of the end cap plate 210 near the housing 240, a protrusion protruding toward the bottom of the housing 240 may be disposed on the electrode terminal connecting portion 110, so that a recessed structure is formed on the electrode terminal connecting portion 110 toward one side of the end cap plate 210, so as to extend the electrode terminal 220 into the recessed structure and connect with the inner wall of the recessed structure. The inner wall of the recess structure serves as a limit for the electrode terminal 220. In another arrangement, as shown in fig. 5 and 7, when the electrode terminal 220 does not protrude from the side of the end cap plate 210 facing the case 240 and the end cap plate 210 is formed with a recessed structure at a region where the electrode terminal 220 is disposed, the electrode terminal connecting part 110 is provided with a boss 111 protruding toward the side of the end cap plate 210, so that a groove 112 is formed on the side of the motor terminal connecting part facing the bottom of the case 240, and the boss 111 protrudes into the end cap plate 210 to be connected to the electrode terminal 220. The bosses 111 may be formed on the plate-shaped base material by pressurization. After the connection between the electrode terminal 220 and the electrode terminal connecting portion 110 is completed, the groove 112 may be filled with a curing adhesive, and the curing adhesive blocks the groove 112 after curing, thereby preventing welding slag generated during welding from falling into the case 240.

As shown in fig. 1 and 11, the end cap assembly further includes an explosion-proof valve 250, and the positive and negative terminals are located on both sides of the explosion-proof valve 250 in the first direction, respectively.

As shown in fig. 1 and 11, the end cap assembly further includes an upper plastic structure 211 and a lower plastic structure 212, the upper plastic structure 211 is disposed on one side of the end cap plate 210 away from the housing 240, and the upper plastic structure 211 is provided with a first through hole corresponding to the electrode terminal 220 and a second through hole corresponding to the explosion-proof valve 250. Part of the structure of the electrode terminal 220 extends into the first through hole, part of the structure of the explosion-proof valve 250 extends into the second through hole, and the upper plastic structure 211 plays a certain role in protecting the electrode terminal 220 and the explosion-proof valve 250. Lower plastic structure 212 sets up in one side that end cover plate 210 is close to casing 240, after end cover plate 210 closing cap is on casing 240, lower plastic structure 212 stretches into inside casing 240, lower plastic structure 212 sets up with utmost point ear connecting portion 120 relatively, lower plastic structure 212 can reduce and make the distance between end cover subassembly and the utmost point ear connecting portion 120 reduce, thereby play certain limiting displacement to utmost point ear connecting portion 120, with spacing through to utmost point ear connecting portion 120, play limiting displacement to electric core subassembly, prevent that electric core subassembly drunkenness or horizontal drunkenness from top to bottom in casing 240.

The embodiment also provides a battery, and the battery comprises the battery cell in the embodiment.

In some embodiments, the battery further includes a case, the battery cell is disposed in the case, the case is configured to provide a receiving space for the battery cell, and the case may have a variety of structures.

In the battery, a plurality of battery cells can be provided, and the plurality of battery cells can be connected in series or in parallel or in series-parallel, wherein the series-parallel refers to that the plurality of battery cells are connected in series or in parallel. The plurality of battery monomers can be directly connected in series or in parallel or in series-parallel, and the whole formed by the plurality of battery monomers is accommodated in the box body; certainly, the battery may also be a battery module formed by connecting a plurality of battery cells in series, in parallel, or in series-parallel, and a plurality of battery modules are connected in series, in parallel, or in series-parallel to form a whole and are accommodated in the box. The battery may further include other structures, for example, the battery may further include a bus member for achieving electrical connection between the plurality of battery cells.

Wherein, each battery cell can be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell can be in a cylinder, a flat body, a cuboid or other shapes.

Since the battery comprises the battery cell provided by the above embodiment, and the adapter sheet 100 provided by the above embodiment is applied in the battery cell, the self-recovery safety part 130 is connected between the tab connecting part 120 and the electrode terminal connecting part 110 in the adapter sheet 100, the self-recovery safety part 130 is heated when the current is too high, and is disconnected when the temperature is higher than the first temperature value so as to protect the battery assembly, and the insulating part 140 coated outside the self-recovery safety part 130 can prevent the electric arc generated when the current is too high from damaging other components in the battery cell; the self-recovery safety part 130 recovers the electrical connection between the tab connection part 120 and the electrode terminal connection part 110 after the temperature is recovered to be less than the first temperature value, so that the electrical core assembly connected to the interposer 100 can be recovered for use, and the electrical core assembly in the battery cell with the excessive current can be reused.

The embodiment also provides an electric device, which comprises the battery monomer in the embodiment, wherein the battery monomer is used for providing electric energy; alternatively, the power consuming device comprises a battery in the above embodiments, the battery being used to provide electrical energy.

Since the electric device includes the battery cell or the battery, the electric device at least has all the advantages of the battery cell or the battery, and details are not repeated herein.

The powered device may be, but is not limited to, a cell phone, tablet, laptop, electronic toy, electric tool, battery car, electric car, ship, spacecraft, and the like. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc.

For convenience of description, the following embodiments are described by taking an electric device as an example of a vehicle according to an embodiment of the present application. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like. The interior of the vehicle is provided with a battery, which may be provided at the bottom or at the head or tail of the vehicle. The battery may be used for power supply of the vehicle, for example, the battery may serve as an operation power source of the vehicle. The vehicle may also include a controller and a motor, the controller being used to control the battery to power the motor, for example, for start-up, navigation, and operational power requirements while traveling of the vehicle.

In some embodiments of the present application, the battery may not only serve as an operating power source for the vehicle, but also as a driving power source for the vehicle, instead of or in part instead of fuel or natural gas, to provide driving power for the vehicle.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein, but rather to cover all embodiments falling within the scope of the appended claims.

Claims (15)

1. An interposer, comprising: the electrode terminal comprises an electrode terminal connecting part, a tab connecting part, a self-recovery safety part and an insulating part, wherein the electrode terminal connecting part is used for connecting an electrode terminal, the tab connecting part is used for connecting a tab, the electrode terminal connecting part and the tab connecting part are electrically connected through the self-recovery safety part, and the self-recovery safety part is used for being in an open circuit state when the temperature is higher than a first temperature and recovering to be in a conduction state when the temperature is lower than the first temperature; the insulating part is sleeved on the outer side of the self-recovery safety part.

2. The interposer as recited in claim 1, wherein said electrode terminal connection portions, said self-healing fuse portions and said tab connection portions are spaced apart along a first direction, and wherein a length of said insulation portion is greater than a length of said self-healing fuse portions in said first direction.

3. The interposer as recited in claim 2, wherein a partial area of said insulation portion is provided outside said tab connection portion.

4. The interposer as claimed in claim 2 or 3, wherein a part of the area of said insulating portion is provided outside said electrode terminal connecting portion.

5. The interposer as recited in claim 4, wherein a side of the electrode terminal connecting portion for connecting to the electrode terminal is a first side surface, a side of the electrode terminal connecting portion facing away from the first side surface is a second side surface, and a length of an area where the insulating portion contacts the first side surface is smaller than a length of an area where the insulating portion contacts the second side surface in the first direction.

6. The interposer as recited in claim 3, wherein in the second direction, the length of said self-healing fuse is less than the length of said tab connection portion; the second direction is perpendicular to the first direction.

7. The interposer as recited in claim 6, wherein the length of said self-healing fuse is one-fourth to one-half of the length of said tab connection portion in said second direction.

8. The interposer as recited in claim 4, wherein said tab connection portion includes a first connector and a second connector, said first connector and said second connector each being adapted to connect to a different one of said tabs.

9. The interposer as recited in claim 8, wherein the tab connection portion further comprises a third connection body, the first connection body and the second connection body are respectively connected to the third connection body, and the self-healing fuse portion is connected between the third connection body and the electrode terminal connection portion.

10. The interposer as claimed in claim 8, wherein the number of said self-recovery securing portions is two, said first connection body is connected to said electrode terminal connection portion through one of said self-recovery securing portions, and said second connection body is connected to said electrode terminal connection portion through the other of said self-recovery securing portions.

11. The interposer as recited in claim 8, wherein one side of said self-healing fuse is connected to said electrode terminal connection part by a nickel plate, and the other side of said self-healing fuse is connected to said tab connection part by a nickel plate.

12. A battery cell, comprising: the electrode terminal, the core assembly and the interposer as recited in any one of claims 1-11, the core assembly comprising a cell body and a tab extending from the cell body; the electrode terminal connecting part of the adapter plate is electrically connected with the electrode terminal, and the tab connecting part of the adapter plate is electrically connected with the tab.

13. The battery cell as claimed in claim 12, wherein the tabs include positive tabs and negative tabs, the electrode terminals include positive terminals and negative terminals, the number of the tabs is two, the positive tabs are connected to the positive terminals through one of the tabs, and the negative tabs are connected to the negative terminals through the other of the tabs.

14. A battery comprising a cell according to claim 12 or 13.

15. An electric device, characterized in that it comprises a battery cell according to claim 12 or 13 for providing electric energy; alternatively, the first and second electrodes may be,

the power-consuming device comprises a battery as defined in claim 14 for providing electrical energy.

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