CN218677486U

CN218677486U - Battery switching piece, battery and consumer

Info

Publication number: CN218677486U
Application number: CN202223202886.7U
Authority: CN
Inventors: 林法稳; 房森基; 韩淑雅; 李勇军; 陈圣立
Original assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Current assignee: Jiangsu Zenio New Energy Battery Technologies Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-03-21
Anticipated expiration: 2032-11-30

Abstract

The utility model belongs to the technical field of the battery, concretely relates to battery switching piece, battery and consumer. The battery adapter plate comprises a first connecting plate, a second connecting plate and a third connecting plate, wherein the first connecting plate, the second connecting plate and the third connecting plate are sequentially connected; and a second connecting piece extending outwards from the second connecting part; wherein the first connecting part and the third connecting part are respectively provided with a crease; the first connecting part is divided into a first area and a second area by taking a corresponding crease as a boundary, and the second area is positioned between the first area and the second connecting part; the third connecting part is divided into a third area and a fourth area by using the corresponding crease as a boundary, and the fourth area is positioned between the third area and the second connecting part. The utility model discloses can realize the function of switching piece itself: carry out the electricity with utmost point ear and utmost point post and connect, also can realize bending the design to utmost point ear.

Description

Battery switching piece, battery and consumer

Technical Field

The utility model belongs to the technical field of the battery, concretely relates to battery switching piece, battery and consumer.

Background

When the power battery is assembled and produced, the problem that the lugs are inserted into the bare cell upside down easily occurs, so that the safety risk is caused; or in the bumping and vibrating process after loading, the electrode lug position of the copper-aluminum foil has larger impact, so that the problem of fatigue cracking is easy to occur, and the electrical property of the battery is influenced. In addition, the multi-layer copper foil/aluminum foil is commonly used as a power battery tab in the industry at present, the copper foil/aluminum foil tab is very soft in material, poor in shaping after bending and forming and weak in strength.

For avoiding the appearance of naked electric core of utmost point ear inverted insertion and utmost point ear fatigue fracture problem, can add switching piece or connection piece structure between utmost point ear and utmost point post among the prior art.

Patent like application number 202020554982.X discloses a secondary lithium battery, including the shell, set up the electric core in the shell and set up the top cap on the shell, electric core with be provided with first connection piece and second connection piece between the top cap, be provided with negative pole ear and anodal ear on the electric core, be provided with negative pole post and anodal post on the top cap, the material of negative pole post is aluminium, the negative pole ear passes through first connection piece with the negative pole end-to-end connection, anodal ear passes through the second connection piece with anodal post is connected. The structure is more stable, the damage is not easy, the production cost is low, but the problem of shaping the pole lug can not be solved.

The patent with the application number of 201720047011.4 discloses a secondary battery, which comprises a battery shell, an electric core contained in the battery shell, a battery top cover covering an opening of the battery shell and provided with a pole, and an adapter sheet, wherein the electric core comprises a main body and a pole lug which is connected with the main body and extends towards the direction close to the battery top cover, the pole lug comprises an adapter sheet connecting section, a main body connecting section and a bending section for connecting the adapter sheet connecting section and the main body connecting section, the adapter sheet comprises a conductive part for connecting the adapter sheet connecting section and the pole, a bending part positioned on the outer side of the bending section, and an insulating part positioned between the main body and the main body connecting section. The tab can be prevented from entering the battery core; the contact between the lug and the electric core main body is cut off, the risk of short circuit of the battery is avoided, the safety of the battery is guaranteed, but the bending section of the battery only can play the role of preliminary shaping of the lug, the multilayer lug is still in a loose state, shaping cannot be achieved, and the integral stress of the multilayer lug is realized.

Therefore, a new adapter sheet is needed to be provided, so that the pole lug is shaped while the problem of fatigue cracking of the pole lug due to reverse insertion of the pole lug into a bare cell is avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the above problem, provide a battery switching piece, battery and consumer, can realize the function of switching piece itself: carry out the electricity with utmost point ear and utmost point post and connect, also can realize bending the design to utmost point ear.

According to the technical scheme of the utility model, the battery switching piece, include

The first connecting piece comprises a first connecting part, a second connecting part and a third connecting part which are connected in sequence; and

a second connecting piece extending outwards from the second connecting part;

wherein the first connecting part and the third connecting part are respectively provided with a crease; the first connecting part is divided into a first area and a second area by taking a corresponding crease as a boundary, and the second area is positioned between the first area and the second connecting part; the third connecting portion use its crease that corresponds to divide into third district and fourth district for the boundary, the fourth district is located the third district with between the second connecting portion.

The utility model discloses form the crease between first connecting portion and third are connected, when the battery switching piece links to each other with utmost point ear, first connecting portion or third are connected and are bent together with utmost point ear to realize the design of utmost point ear.

Further, the first connecting piece and the second connecting piece are integrally formed.

Further, the first connection portion and the third connection portion are also formed with lands, respectively. Through the setting of weld zone, can effectually carry out welding position, avoid welding dislocation, lead to the atress uneven, make utmost point ear layer compact simultaneously.

Further, on the first connection portion, the land is formed only in the second region; on the third connection portion, the land is formed only in the fourth region.

Further, on the first connection portion, the welding regions are formed in the first region and the second region, respectively; on the third connection portion, the land is formed in the third region and the fourth region, respectively; neither weld zone is contiguous with the fold. The welding areas are arranged on the two sides of the first connecting portion and the two sides of the third connecting portion, which correspond to the creases, so that the overcurrent capacity of the battery can be guaranteed, the lug layers on the two sides of the creases can be compact, when the first connecting portion, the third connecting portion and the lugs are bent together, the integral stress of the multi-layer lugs can be guaranteed, and the single-layer lugs are prevented from being accidentally inserted backwards into the battery cell when being bent.

Furthermore, a crease groove or a through hole is formed on the path of the crease of the first connecting part and/or the third connecting part. The bending of the first area, the second area, the third area and the fourth area can be facilitated by the aid of the bending grooves or the through holes, linear creases are formed, local protrusions cannot be formed, and meanwhile, the stress of the bending part can be guaranteed to be uniform, so that the problems that the pole lugs are stressed and cracked and the switching pieces are stressed and cracked are not cracked due to fatigue after the battery is loaded in a follow-up manner are solved.

Further, the creasing groove is a continuous groove or a discontinuous groove, and the through holes are continuous or discontinuous through holes. Specifically, the trace grooves and the through holes may be arranged at intervals.

Furthermore, the width of the creasing groove is 0.1 mm-1.0 mm.

Furthermore, the depth of the indenting groove is larger than 1/4 of the thickness of the battery adapter sheet and smaller than 3/4 of the thickness of the battery adapter sheet.

Furthermore, the thickness of the battery adapter sheet is 0.3 mm-1.5 mm.

Furthermore, the shape of the second connecting piece is not limited, and can be round, square, rectangle, ellipse and other shapes. The second connection piece may be further provided with a welding region for connecting the electrode terminal with the battery tab.

Specifically, the width of the second connecting portion is smaller than that of the first connecting portion and that of the third connecting portion, so that the middle portion of one side of the first connecting piece is of a notch structure, and the second connecting piece extends outwards from the middle of the notch.

Further, for short-circuit protection, a FUSE (local flow area is small) feature, specifically a connection structure with a width smaller than that of the second connecting sheet, is arranged between the second connecting sheet and the second connecting portion; a step feature convenient for welding can be arranged between the connecting structure and the second connecting part.

Another aspect of the present invention provides a battery, including a housing, two sets of bare cells, electrode terminals, and at least two of the above battery tabs; the bare cell extends out of tabs from the side surface, wherein the tabs of one group of bare cells are fixed on the first connecting part, and the tabs and the first connecting part can be bent along corresponding creases simultaneously; the pole lugs of the other group of bare cells are fixed on the third connecting part, and the pole lugs and the third connecting part can be bent along corresponding creases simultaneously; the electrode terminal is arranged on the shell and fixed with the second connecting sheet; and on the same battery adapter plate, the polarity of the lug on the first connecting part is the same as that of the lug on the third connecting part.

Specifically, the utility model discloses a battery switching piece with crease connecting portion fixes a position the back to utmost point ear, and ultrasonic bonding is fixed, bends along the crease position again and stereotypes, realizes the whole atress of multilayer utmost point ear, both can avoid the tired fracture problem of individual layer atress, can prevent the emergence of utmost point ear reverse plug naked electric core again.

The utility model also provides an electric equipment, include as above the battery. In particular, the powered device may be a vehicle, a ship or a spacecraft.

Compared with the prior art, the technical scheme of the utility model have following advantage:

the utility model forms a crease between the first connection part and the third connection part, when the battery adapter sheet is connected with the pole ear, the first connection part or the third connection part and the pole ear are bent together, thereby realizing the shaping of the pole ear; the bending groove or the through hole is arranged to avoid forming local bulges, and the stress at the bending part is ensured to be uniform, so that the problems of stress fatigue cracking of the lug and stress fatigue cracking of the bending part of the adapter sheet after the subsequent battery is loaded are solved; the welding area is arranged, so that the lug layers on the two sides of the bending part are compact, when the connecting part and the lugs are bent together, the integral stress of the multi-layer lugs can be ensured, and the accidental reverse insertion of the battery cell when the single-layer lug is bent is avoided.

Drawings

Fig. 1-3 are schematic structural views of the tab connecting sheet of the present invention.

Fig. 4 is a schematic structural diagram of the battery of the present invention.

Fig. 5 is the schematic view of the expansion state of the tab connecting piece and the tab connection of the present invention.

Description of reference numerals: 100-first connecting piece, 110-first connecting part, 111-first area, 112-second area, 120-second connecting part, 130-third connecting part, 131-third area, 132-fourth area, 200-second connecting piece, 300-crease, 310-crease groove, 320-through hole, 400-welding area, 500-electrode terminal, 600-bare cell and 610-tab.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in figures 1-3, the battery adapter sheet of the present invention is made of aluminum or copper material, and has a thickness of 0.3 mm-1.5 mm. Comprises a first connecting piece 100 and a second connecting piece 200; the first connecting piece 100 includes a first connecting portion 110, a second connecting portion 120 and a third connecting portion 130 connected in sequence; the second connecting piece 200 extends outward from the second connecting portion 120.

Specifically, the second connection portion 120 has a smaller width than the first connection portion 110 and the third connection portion 130, such that a middle portion of one side of the first connection piece 100 has a notch structure, and the second connection piece 200 extends outward from the middle portion of the notch. The second connecting piece 200 is rectangular, and it is conceivable that it may have other shapes such as a circle and an ellipse. The second connecting piece 200 and the second connecting portion 120 also have FUSE (local flow area is small) feature to ensure the safety of the structure.

Wherein, the first connection portion 110 and the third connection portion 130 are respectively formed with creases 300; the first connecting portion 110 is divided into a first area 111 and a second area 112 by taking the corresponding crease 300 as a boundary, and the second area 112 is positioned between the first area 111 and the second connecting portion 120; the third connecting portion 130 is divided into a third region 131 and a fourth region 132 by the corresponding fold 300, and the fourth region 132 is located between the third region 131 and the second connecting portion 120. Lands 400 are also formed at the first connection portion 110 and the third connection portion 130, respectively.

The first connecting piece and the second connecting piece can be integrally formed or fixed by welding, and the first connecting piece and the second connecting piece can be connected by a proper means according to actual conditions by a person skilled in the art.

As shown in fig. 1, on the first connection portion 110, the land 400 is formed only in the second region 112; on the third connection portion 130, the land 400 is formed only on the fourth region 132.

As shown in fig. 2, the bonding pads 400 are formed on the first and

second regions

111 and 112, respectively, on the first connection portion 110; on the third connection portion 130, the lands 400 are formed on the third region 131 and the fourth region 132, respectively; neither weld zone 400 is contiguous with a fold.

As shown in fig. 3: a crease groove 310 or a through hole 320 is also formed on the path of the crease 300 of the first connection portion 110 and/or the third connection portion 130. Specifically, crease groove 310 is a continuous groove or a discontinuous groove, and through-hole 320 is a continuous or discontinuous through-hole. The indentation grooves 310 are formed on the bent inner surfaces of the first and

second regions

111 and 112, and the third and

fourth regions

131 and 132, and have a depth greater than 1/4 of the thickness of the cell patch and less than 3/4 of the thickness of the cell patch.

As shown in fig. 4-5: a battery comprises a shell (not shown), two groups of bare cells 600, an electrode terminal 500 and at least two battery adapter plates, wherein the bare cells 600 extend out of a tab 610 from the side surface. Wherein the tab 610 of a set of bare cell 600 is welded and fixed on the first connecting portion 110 through the welding region 400 of the first connecting portion 110, the tab 610 and the first connecting portion 110 can be bent along the corresponding crease 300 at the same time, and the crease grooves 310 and the through holes 320 are arranged on the path of the crease 300 at intervals. The tab 610 of the other group of bare cells 600 is welded and fixed on the third connecting portion 130 through the welding region 400 of the third connecting portion 130, and the tab and the third connecting portion 130 can be bent along the corresponding crease 300 at the same time; the electrode terminal 500 is disposed on the case and fixed with the second connection piece 200; in the same battery tab, the tab of the first connection portion 110 and the tab 610 of the third connection portion 130 have the same polarity.

The adapter sheet in the battery is made of aluminum or copper, the material selection is the same as that of the connected tab, and specifically, the aluminum battery adapter sheet used for the positive electrode tab of the battery can be made of AL1060 material; a be copper material battery switching piece for anodal utmost point ear of battery can adopt the CuT2 material. The battery switching piece and the electrode lug made of the same material can be better integrated after being welded, and the performance cannot be influenced.

The utility model also provides an electric equipment, including above-mentioned battery, this electric equipment can be vehicle, boats and ships or airborne vehicle.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Various other modifications and alterations will occur to those skilled in the art upon reading the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A battery switching piece is characterized by comprising

a second connecting piece extending outwards from the second connecting part;

2. The battery tab of claim 1, wherein the first tab and the second tab are integrally formed.

3. The battery interposer as recited in claim 1, wherein the first connection portion and the third connection portion are further formed with welding lands, respectively.

4. The battery interposer as recited in claim 3, wherein the welding region is formed only in the second region on the first connection portion; on the third connection portion, the land is formed only in the fourth region.

5. The battery interposer as recited in claim 3, wherein the welding regions are formed in the first region and the second region, respectively, on the first connection portion; on the third connection portion, the land is formed in the third region and the fourth region, respectively; neither weld zone is contiguous with the fold.

6. The battery interposer as recited in claim 1, wherein a crease groove or a through hole is further formed on a path of the crease of the first connection portion and/or the third connection portion.

7. The battery interposer as recited in claim 6, wherein the indention groove is a continuous groove or a discontinuous groove, and the through-holes are continuous or discontinuous through-holes.

8. The battery interposer as recited in claim 6, wherein the indentation groove has a depth greater than 1/4 of the thickness of the battery interposer and less than 3/4 of the thickness of the battery interposer.

9. The battery interposer as recited in any one of claims 1-8, wherein the thickness of said battery interposer is between 0.3mm and 1.5mm.

10. A battery comprising a housing, two sets of bare cells, electrode terminals, and at least two battery tabs of any one of claims 1-9; the bare cell extends out of tabs from the side surface, wherein the tabs of one group of bare cells are fixed on the first connecting part, and the tabs and the first connecting part can be bent along corresponding creases simultaneously; the pole lugs of the other group of bare cells are fixed on the third connecting part, and the pole lugs and the third connecting part can be bent along corresponding creases simultaneously; the electrode terminal is arranged on the shell and fixed with the second connecting sheet; and on the same battery adapter plate, the polarity of the lug on the first connecting part is the same as that of the lug on the third connecting part.

11. An electrical device comprising the battery of claim 10.