Adapter piece and battery

Abstract

The utility model relates to the technical field of batteries, in particular to an adapter piece and a battery, the adapter piece is used for connecting a tab and a pole arranged on a battery cell cover plate, and the adapter piece comprises at least one transition area and at least two embossed areas arranged at intervals; each transition area is arranged between every two adjacent embossing areas, each transition area is provided with a hollow structure, and the hollow structures are arranged in the direction perpendicular to the bending direction of the switching piece; the two sides of the hollow structure are provided with the embossed areas, and the adapter plate is respectively welded and fixed with the tab and the positive and negative terminals through the embossed areas, so that the solder accommodating space can be enlarged, the welding quality of the adapter plate and the tab is further improved, the welding quality of the adapter plate and the positive and negative terminals is also improved, the overcurrent capacity of the adapter plate is improved, and the service life of the adapter plate is prolonged. And the service life of the battery is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to an adapter and a battery. Background Technology

[0002] With the development of modern society and the increasing environmental awareness of people, more and more devices are choosing sodium-ion batteries as their power source, such as mobile phones, laptops, power tools, and electric vehicles. This provides a broad space for the application and development of sodium-ion batteries. In the production process of sodium batteries, the positive or negative electrode needs to be connected to the battery cover plate via an adapter plate. Compared to lithium-ion batteries, sodium-ion batteries have a higher design current, which leads to higher requirements for welding area and welding quality. The welding quality of the terminals and adapter plates in existing lithium-ion batteries cannot meet the welding quality requirements of sodium-ion batteries, resulting in a decline in the performance and lifespan of existing sodium-ion batteries. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model can improve the welding quality of the adapter piece and the tab, as well as the welding quality of the adapter piece and the positive and negative terminals, thereby improving the current carrying capacity of the adapter piece and thus improving the performance and service life of the battery.

[0004] This utility model provides an adapter piece for connecting the electrode tab and the electrode post disposed on the cell cover plate, including at least one transition area and at least two embossed areas spaced apart.

[0005] The transition area is located between two adjacent embossed areas, and the transition area has a hollow structure arranged in a direction perpendicular to the bending direction of the adapter piece.

[0006] Furthermore, the hollow structure includes at least one elongated hole, and the width direction of at least one elongated hole is consistent with the bending direction of the adapter piece.

[0007] Furthermore, the elongated hole satisfies at least one of the following characteristics:

[0008] The length of the elongated hole is 10-18 mm;

[0009] The width of the elongated hole is 3-6 mm.

[0010] Furthermore, the hollowed-out structure has a hollowed-out length of 15%-20% of the length of the adapter piece along its length.

[0011] Furthermore, the hollow structure also includes a first notch and a second notch, which are respectively disposed at both ends of the transition area.

[0012] Furthermore, the first gap and / or the second gap satisfy at least one of the following characteristics:

[0013] Along the bending direction of the adapter piece, the width of the first notch and / or the second notch is 1.5-2.5 mm;

[0014] Along a direction perpendicular to the bending direction of the adapter piece, the length of the first notch and / or the second notch is 3.5-4.5 mm.

[0015] Furthermore, the adapter plate satisfies at least one of the following characteristics:

[0016] The length of the adapter piece is 95-130mm;

[0017] The width of the adapter piece is 36-50mm;

[0018] The thickness of the adapter piece is 1.2-1.5mm.

[0019] Furthermore, the embossed area satisfies at least one of the following characteristics:

[0020] The length of the embossed area is 80%-95% of the length of the adapter piece;

[0021] The width of the embossed area is 15%-50% of the width of the adapter piece.

[0022] Furthermore, along the thickness direction of the adapter piece, the adapter piece includes at least two laminated layers, and the hollow structure extends longitudinally through each of the laminated layers.

[0023] This utility model also protects a battery, including a cell with tabs, a cell housing with terminals, and an adapter piece as described above.

[0024] The battery cell is disposed inside the battery cell housing, and the two ends of the adapter piece are welded and fixed to the tab and the post, respectively.

[0025] Implementing the embodiments of this utility model has the following beneficial effects:

[0026] The adapter piece of this invention has at least one transition area and at least two embossed areas spaced apart. The transition area has a hollow structure, which is arranged perpendicular to the bending direction of the adapter piece. This improves the flexibility of the adapter piece while ensuring its overall strength, making it easier to bend. At the same time, embossed areas are provided on both sides of the hollow structure. The adapter piece is welded and fixed to the tabs and positive and negative terminals through the embossed areas, which increases the solder capacity and improves the welding quality between the adapter piece and the tabs, as well as the welding quality between the adapter piece and the positive and negative terminals. This improves the current carrying capacity of the adapter piece, thereby improving the performance and lifespan of the battery. Attached Figure Description

[0027] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this utility model. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0028] Figure 1 This is a structural diagram of the adapter plate described in this embodiment;

[0029] Figure 2 This is a structural diagram of the adapter plate according to another embodiment.

[0030] The corresponding reference numerals in the figure are as follows:

[0031] 1- Embossing area; 2- Hollowed-out structure; 21- Long strip hole; 22- First notch; 23- Second notch. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0034] See appendix Figure 1-2 This embodiment provides an adapter piece for connecting the electrode tab and the electrode post disposed on the cell cover plate, including at least one transition region and at least two embossed regions 1 spaced apart; the transition region is disposed between two adjacent embossed regions 1, and the transition region is provided with a hollow structure 2, which is arranged in a direction perpendicular to the bending direction of the adapter piece.

[0035] It should be noted that: in this embodiment, the adapter piece is provided with at least one transition area and at least two embossed areas 1 at intervals. The transition area is provided with a hollow structure 2, which is arranged in a direction perpendicular to the bending direction of the adapter piece. This can improve the flexibility of the adapter piece while ensuring the overall strength of the adapter piece, making it easier to bend. At the same time, embossed areas 1 are provided on both sides of the hollow structure 2. The adapter piece is welded and fixed to the tab and the positive and negative terminals respectively through the embossed areas 1. This can increase the solder accommodation space, thereby improving the welding quality between the adapter piece and the tab, as well as the welding quality between the adapter piece and the positive and negative terminals, thus improving the current carrying capacity of the adapter piece, and thus improving the performance and service life of the battery.

[0036] In this embodiment, the adapter piece is used to connect the tabs and positive and negative terminals of the battery cell. The adapter piece is welded and fixed to the tabs and positive and negative terminals of the battery cell respectively to realize the electrical connection between the battery cell and the positive and negative terminals. Specifically, at least one embossed area 1 of the adapter piece is welded and fixed to the positive and negative terminals, and at least one embossed area 1 of the adapter piece is welded and fixed to the tabs of the battery cell.

[0037] In this embodiment, the positive and negative terminals are disposed on the battery cover, and the battery cell is disposed inside the battery housing. After the positive and negative terminals and the tabs are electrically connected through the adapter, the battery cover needs to be fastened to the port of the battery housing containing the battery cell. At this time, the adapter bends toward the port of the battery housing under the action of the battery cover. The crease of the adapter when it bends is located in the transition area and is parallel to the arrangement direction of the hollow structure 2.

[0038] In some possible embodiments, see Appendix Figure 2 Along the width direction of the adapter piece, there are a first group of embossed areas 1, a first group of transition areas, a second group of embossed areas 1, a second group of transition areas, and a third group of embossed areas 1 at intervals; each group of transition areas is provided with a hollow structure 2.

[0039] Specifically, the first and second embossed areas 1 are both welded to the tabs, and the third embossed area 1 is welded to the positive and negative terminals; or the first and second embossed areas 1 are both welded to the positive and negative terminals, and the third embossed area 1 is welded to the tabs. Increasing the number of embossed areas 1 can increase the connection area, ensure welding quality, and thus improve the battery performance and lifespan.

[0040] Furthermore, the first set of hollow structures 2 and the second set of hollow structures 2 may have the same or different structures. That is, as long as the hollow length of the first set of hollow structures 2 is 15%-20% of the length of the adapter piece, and the hollow length of the second set of hollow structures 2 is 15%-20% of the length of the adapter piece, it is sufficient.

[0041] In this embodiment, along the width direction of the adapter piece, there are a first set of embossed areas 1, a first set of transition areas and a second set of embossed areas 1 spaced apart; the first set of embossed areas 1 is welded and fixed to the electrode tab, and the second set of embossed areas 1 is welded and fixed to the positive and negative terminals.

[0042] In this embodiment, the embossing area 1 is formed by embossing the adapter piece. Specifically, the adapter piece is embossed by an embossing device, which includes an embossing roller and a mating roller. The outer circumference of the embossing roller is evenly distributed with multiple embossing protrusions, and the outer circumference of the mating roller is evenly distributed with multiple recesses. The embossing roller and the mating roller form a pair of rollers, and the positions of the embossing protrusions and recesses correspond to each other. The embossing protrusions can cooperate with the recesses to form the embossing area 1 on the side of the adapter piece that contacts the mating roller.

[0043] In some possible embodiments, the hollow structure 2 includes at least one elongated hole 21, the width direction of which is consistent with the bending direction of the adapter piece. By providing the elongated hole 21 and setting its width direction to be consistent with the bending direction of the adapter piece, the flexibility of the adapter piece can be improved, making it easier to bend the adapter piece.

[0044] In some possible embodiments, the perforated structure 2 includes at least one of an elongated hole 21, a round hole, a semi-circular hole, or an elliptical hole.

[0045] In this embodiment, the length direction of the elongated hole 21 is parallel to the crease when the adapter plate is bent.

[0046] In some possible embodiments, the elongated hole 21 satisfies at least one of the following characteristics: the length of the elongated hole 21 is 10-18 mm; the width of the elongated hole 21 is 3-6 mm. By setting the length and width of the elongated hole to the above range, the flexibility of the adapter piece can be improved while ensuring the strength of the adapter piece.

[0047] In this embodiment, the length of the elongated hole 21 is 10-14mm, 10-16mm, 10-18mm, 12-16mm, 12-18mm, 14-16mm, 14-18mm, or 16-18mm, etc.; the width of the elongated hole 21 is 3-4mm, 3-5mm, 3-6mm, 4-6mm, or 5-6mm, etc.

[0048] Preferably, the length of the elongated hole 21 is 14mm and the width of the elongated hole 21 is 4mm.

[0049] In some possible embodiments, the hollow structure 2 has a hollow length of 15%-20% of the length of the adapter piece in the longitudinal direction. By setting the hollow length to the above range of the length of the adapter piece, the connection area of ​​the embossed areas on both sides of the hollow structure can be guaranteed while improving the flexibility of the adapter piece. That is, the current carrying capacity of the adapter piece can be guaranteed, thereby ensuring the performance and service life of the battery.

[0050] In this embodiment, the cutout length of the cutout structure 2 in the length direction of the adapter piece is 15%-18%, 15%-20%, 16%-18%, 16%-20%, 18%-19%, or 18%-20% of the length of the adapter piece.

[0051] In some possible embodiments, the hollow structure 2 further includes a first notch 22 and a second notch 23, which are respectively disposed at both ends of the transition area. By setting the first notch 22 and the second notch 23, the flexibility of the adapter piece can be further improved and the difficulty of bending the adapter piece can be reduced.

[0052] In this embodiment, along the length of the hollow structure 2, the hollow structure 2 includes a first notch 22, at least one elongated hole 21, and a second notch 23 in sequence.

[0053] In some possible embodiments, the first notch 22 and / or the second notch 23 satisfy at least one of the following characteristics: the width of the first notch 22 and / or the second notch 23 along the bending direction of the adapter piece is 1.5-2.5 mm; the length of the first notch 22 and / or the second notch 23 along the direction perpendicular to the bending direction of the adapter piece is 3.5-4.5 mm. By setting the specific dimensions of the first notch 22 and the second notch 23 within the above range, it is possible to avoid the size being too large and affecting the current carrying capacity of the adapter piece, and it is also possible to avoid the size being too small, which would increase the manufacturing difficulty or reduce the flexibility of the adapter piece.

[0054] In this embodiment, the width of the first notch 22 and / or the second notch 23 is 1.5-1.8mm, 1.5-2.0mm, 1.5-2.5mm, 1.6-1.8mm, 1.6-2.0mm, 1.6-2.5mm, 1.8-2.0mm, or 1.8-2.5mm, etc.; the length of the first notch 22 and / or the second notch 23 is 3.5-3.8mm, 3.5-4.0mm, 3.5-4.5mm, 3.8-4.0mm, 3.8-4.5mm, or 4.0-4.5mm, etc.

[0055] Preferably, the length of the first notch 22 is 4mm and the width is 2mm.

[0056] In some possible embodiments, the adapter piece satisfies at least one of the following characteristics: the length of the adapter piece is 95-130mm; the width of the adapter piece is 36-50mm; and the thickness of the adapter piece is 1.2-1.5mm. By setting the specific dimensions of the adapter piece to the above range, the connection area between the adapter piece and the tab, the connection area between the adapter piece and the positive and negative terminals, and the overcurrent capacity of the battery can be guaranteed, thereby ensuring the performance of the battery.

[0057] In this embodiment, the length of the adapter piece is 95-100mm, 95-110mm, 95-130mm, 100-120mm, 100-130mm, 110-130mm, 115-130mm, or 120-130mm, etc.; the width of the adapter piece is 36-40mm, 36-45mm, 36-50mm, 40-45mm, 40-50mm, 45-48mm, 45-50mm, or 48-50mm, etc.; and the thickness of the adapter piece is 1.2-1.3mm, 1.2-1.4mm, 1.2-1.5mm, 1.3-1.4mm, 1.3-1.5mm, or 1.4-1.5mm, etc.

[0058] Preferably, the adapter piece has a length of 104mm, a width of 41mm, and a thickness of 1.3mm.

[0059] In some possible embodiments, the embossed region 1 satisfies at least one of the following characteristics: the length of the embossed region 1 is 80%-95% of the length of the adapter piece; the width of the embossed region 1 is 15%-50% of the width of the adapter piece; the adapter piece is welded and fixed to the tab and the positive and negative terminals respectively through the embossed region 1. By setting the specific size of the embossed region 1 within the above range, the connection area between the adapter piece and the tab can be guaranteed, as can the connection area between the adapter piece and the positive and negative terminals, and the welding quality between the adapter piece and the tab can be improved, while also improving the welding quality between the adapter piece and the positive and negative terminals.

[0060] In this embodiment, the length of the embossed area 1 is 80%-85%, 80%-90%, 80%-95%, 85%-90%, 85%-95%, or 90%-95% of the length of the adapter piece; the width of the embossed area 1 is 15%-30%, 15%-50%, 20%-40%, 20%-50%, 30%-50%, 40%-50%, or 45%-50% of the width of the adapter piece.

[0061] Preferably, at least two sets of embossed areas 1 on the adapter piece have the same length and width, with the length of the embossed area 1 being 85% of the length of the adapter piece and the width of the embossed area 1 being 30% of the width of the adapter piece.

[0062] In this embodiment, along the length of the embossed region 1, the tabs and the positive and negative terminals are respectively disposed in the middle region of the embossed region 1.

[0063] In this embodiment, along the length of the embossed area 1, the length occupied by the tabs is greater than the length occupied by the positive and negative terminals, and the spacing of the tabs on one side of the battery cell has various specifications. In order to ensure the compatibility of the embossed area 1 with the tabs, the length of the embossed area 1 that is welded and fixed to the tabs is greater than the length of the embossed area 1 that is welded and fixed to the positive and negative terminals.

[0064] In this embodiment, when the adapter includes two sets of embossed areas 1, the length of the embossed area welded to the tab is greater than the length of the embossed area 1 welded to the positive and negative terminals. Along the length direction of the adapter, both sets of embossed areas 1 are located in the middle area of ​​the adapter, that is, both sets of embossed areas 1 extend from the middle position of the adapter to both sides.

[0065] In some possible embodiments, the adapter sheet includes at least two laminated layers along the thickness direction, and the hollow structure 2 extends longitudinally through each laminated layer. In this embodiment, the adapter sheet is made of at least two laminated layers. This causes wrinkles to appear in the laminated layers during bending, affecting the connection quality and current carrying capacity with the tabs and positive and negative terminals. To reduce the probability of wrinkles appearing in the adapter sheet, the hollow structure 2 extends longitudinally through each laminated layer. Specifically, when the adapter sheet is bent, the hollow structure 2 is provided to provide deformation space for the adapter sheet, thereby reducing the probability of wrinkles appearing in the adapter sheet and ensuring the connection quality and current carrying capacity of the adapter sheet.

[0066] Preferably, the adapter is made of 12 layers of aluminum foil.

[0067] The connection process of the adapter plate: The position to be welded on the electrode tab is set opposite to the first group of embossed areas 1 and the two are welded and fixed; the position to be welded on the positive and negative terminals is set opposite to the second group of embossed areas 1 and the two are welded and fixed, so that the electrode tab and the positive and negative terminals are electrically connected through the adapter plate.

[0068] This utility model also protects a battery, including a cell with tabs, a cell housing with terminals, and an adapter plate as described above. The cell is disposed inside the cell housing, and the two ends of the adapter plate are welded and fixed to the tabs and terminals respectively. The battery in this embodiment includes the adapter plate as described above. The hollow structure 2 on the adapter plate has embossed areas 1 on both sides. The adapter plate is welded and fixed to the tabs and positive and negative terminals respectively through the embossed areas 1. This can increase the solder accommodation space, thereby improving the welding quality between the adapter plate and the tabs, and also improving the welding quality between the adapter plate and the positive and negative terminals, thereby improving the current carrying capacity of the adapter plate, and thus improving the performance and service life of the battery.

[0069] Example 1

[0070] See appendix Figure 1-2 This embodiment provides an adapter piece for connecting the electrode tab and the electrode post disposed on the cell cover plate, including at least one transition region and at least two embossed regions 1 spaced apart; the transition region is disposed between two adjacent embossed regions 1, and the transition region is provided with a hollow structure 2, which is arranged in a direction perpendicular to the bending direction of the adapter piece.

[0071] In this embodiment, the adapter piece is used to connect the tabs and positive and negative terminals of the battery cell. The adapter piece is welded and fixed to the tabs and positive and negative terminals of the battery cell respectively to realize the electrical connection between the battery cell and the positive and negative terminals. Specifically, at least one embossed area 1 of the adapter piece is welded and fixed to the positive and negative terminals, and at least one embossed area 1 of the adapter piece is welded and fixed to the tabs of the battery cell.

[0072] In this embodiment, the positive and negative terminals are disposed on the battery cover, and the battery cell is disposed inside the battery housing. After the positive and negative terminals and the tabs are electrically connected through the adapter, the battery cover needs to be fastened to the port of the battery housing containing the battery cell. At this time, the adapter bends toward the port of the battery housing under the action of the battery cover. The crease of the adapter when it bends is located in the transition area and is parallel to the arrangement direction of the hollow structure 2.

[0073] In this embodiment, along the width direction of the adapter piece, there are a first set of embossed areas 1, a first set of transition areas and a second set of embossed areas 1 spaced apart; the first set of embossed areas 1 is welded and fixed to the electrode tab, and the second set of embossed areas 1 is welded and fixed to the positive and negative terminals.

[0074] In this embodiment, the adapter piece satisfies at least one of the following characteristics: the length of the adapter piece is 95-130mm; the width of the adapter piece is 36-50mm; and the thickness of the adapter piece is 1.2-1.5mm.

[0075] In this embodiment, the length of the adapter piece is 95-100mm, 95-110mm, 95-130mm, 100-120mm, 100-130mm, 110-130mm, 115-130mm, or 120-130mm, etc.; the width of the adapter piece is 36-40mm, 36-45mm, 36-50mm, 40-45mm, 40-50mm, 45-48mm, 45-50mm, or 48-50mm, etc.; and the thickness of the adapter piece is 1.2-1.3mm, 1.2-1.4mm, 1.2-1.5mm, 1.3-1.4mm, 1.3-1.5mm, or 1.4-1.5mm, etc.

[0076] Preferably, the adapter piece has a length of 104mm, a width of 41mm, and a thickness of 1.3mm.

[0077] In this embodiment, along the thickness direction of the adapter piece, the adapter piece includes at least two laminated layers, and the hollow structure 2 extends longitudinally through each laminated layer.

[0078] Preferably, the adapter is made of 12 layers of aluminum foil.

[0079] In this embodiment, the embossed area 1 satisfies at least one of the following characteristics: the length of the embossed area 1 is 80%-95% of the length of the adapter piece; the width of the embossed area 1 is 15%-50% of the width of the adapter piece.

[0080] In this embodiment, the length of the embossed area 1 is 80%-85%, 80%-90%, 80%-95%, 85%-90%, 85%-95%, or 90%-95% of the length of the adapter piece; the width of the embossed area 1 is 15%-30%, 15%-50%, 20%-40%, 20%-50%, 30%-50%, 40%-50%, or 45%-50% of the width of the adapter piece.

[0081] Preferably, at least two sets of embossed areas 1 on the adapter piece have the same length and width, with the length of the embossed area 1 being 85% of the length of the adapter piece and the width of the embossed area 1 being 30% of the width of the adapter piece.

[0082] In this embodiment, along the length of the embossed region 1, the tabs and the positive and negative terminals are respectively disposed in the middle region of the embossed region 1.

[0083] In this embodiment, the hollow structure 2 includes at least one elongated hole 21, and the width direction of the at least one elongated hole 21 is consistent with the bending direction of the adapter piece.

[0084] In this embodiment, the hollow structure 2 includes at least one of the following: an elongated hole 21, a round hole, a semi-circular hole, or an elliptical hole.

[0085] In this embodiment, the length direction of the elongated hole 21 is parallel to the crease when the adapter plate is bent.

[0086] In this embodiment, the elongated hole 21 satisfies at least one of the following characteristics: the length of the elongated hole 21 is 10-18 mm; the width of the elongated hole 21 is 3-6 mm.

[0087] In this embodiment, the length of the elongated hole 21 is 10-14mm, 10-16mm, 10-18mm, 12-16mm, 12-18mm, 14-16mm, 14-18mm, or 16-18mm, etc.; the width of the elongated hole 21 is 3-4mm, 3-5mm, 3-6mm, 4-6mm, or 5-6mm, etc.

[0088] Preferably, the length of the elongated hole 21 is 14mm and the width of the elongated hole 21 is 4mm.

[0089] In this embodiment, the cutout length of the cutout structure 2 in the length direction of the adapter piece is 15%-20% of the length of the adapter piece.

[0090] In this embodiment, the cutout length of the cutout structure 2 in the length direction of the adapter piece is 15%-18%, 15%-20%, 16%-18%, 16%-20%, 18%-19%, or 18%-20% of the length of the adapter piece.

[0091] In this embodiment, the hollow structure 2 also includes a first notch 22 and a second notch 23, which are respectively disposed at both ends of the transition area.

[0092] In this embodiment, along the length of the hollow structure 2, the hollow structure 2 includes a first notch 22, at least one elongated hole 21, and a second notch 23 in sequence.

[0093] In this embodiment, the first notch 22 and / or the second notch 23 satisfy at least one of the following characteristics: the width of the first notch 22 and / or the second notch 23 is 1.5-2.5mm along the bending direction of the adapter piece; the length of the first notch 22 and / or the second notch 23 is 3.5-4.5mm along the direction perpendicular to the bending direction of the adapter piece.

[0094] In this embodiment, the width of the first notch 22 and / or the second notch 23 is 1.5-1.8mm, 1.5-2.0mm, 1.5-2.5mm, 1.6-1.8mm, 1.6-2.0mm, 1.6-2.5mm, 1.8-2.0mm, or 1.8-2.5mm, etc.; the length of the first notch 22 and / or the second notch 23 is 3.5-3.8mm, 3.5-4.0mm, 3.5-4.5mm, 3.8-4.0mm, 3.8-4.5mm, or 4.0-4.5mm, etc.

[0095] Preferably, the length of the first notch 22 is 4mm and the width is 2mm.

[0096] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein, and includes various changes and variations without departing from the scope of the present invention.

[0097] In this document, the directional terms such as front, back, top, and bottom are defined according to the positions of the components in the accompanying drawings and the positions between the components, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed by this utility model.

[0098] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0099] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An adapter plate for connecting a tab and a terminal post disposed on a cell cover plate, characterized in that, Includes at least one transition area and at least two embossed areas with intervals (1); The transition area is located between two adjacent embossed areas (1), and the transition area is provided with a hollow structure (2), which is arranged in a direction perpendicular to the bending direction of the adapter piece.

2. The adapter plate according to claim 1, characterized in that, The hollow structure (2) includes at least one elongated hole (21), and the width direction of at least one elongated hole (21) is consistent with the bending direction of the adapter piece.

3. The adapter plate according to claim 2, characterized in that, The elongated hole (21) satisfies at least one of the following characteristics: The length of the elongated hole (21) is 10-18 mm; The width of the elongated hole (21) is 3-6 mm.

4. The adapter plate according to claim 1, characterized in that, The hollow structure (2) has a hollow length of 15%-20% of the length of the adapter piece along its length direction.

5. The adapter plate according to claim 1, characterized in that, The hollow structure (2) also includes a first notch (22) and a second notch (23), which are respectively disposed at both ends of the transition area.

6. The adapter plate according to claim 5, characterized in that, The first gap (22) and / or the second gap (23) satisfy at least one of the following characteristics: Along the bending direction of the adapter piece, the width of the first notch (22) and / or the second notch (23) is 1.5-2.5 mm; The length of the first notch (22) and / or the second notch (23) is 3.5-4.5 mm along a direction perpendicular to the bending direction of the adapter piece.

7. The adapter plate according to any one of claims 1-6, characterized in that, The adapter plate satisfies at least one of the following characteristics: The length of the adapter piece is 95-130mm; The width of the adapter piece is 36-50mm; The thickness of the adapter piece is 1.2-1.5mm.

8. The adapter plate according to any one of claims 1-6, characterized in that, The embossed area (1) satisfies at least one of the following characteristics: The length of the embossed area (1) is 80%-95% of the length of the adapter piece; The width of the embossed area (1) is 15%-50% of the width of the adapter piece.

9. The adapter plate according to any one of claims 1-6, characterized in that, Along the thickness direction of the adapter piece, the adapter piece includes at least two laminated layers, and the hollow structure (2) extends longitudinally through each of the laminated layers.

10. A battery, characterized in that, The battery cell includes a battery cell with tabs and a battery cell housing with terminals as described in any one of claims 1-9; The battery cell is disposed inside the battery cell housing, and the two ends of the adapter piece are welded and fixed to the tab and the post, respectively.

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