CN219917509U - Current collecting disc, end cover assembly and battery - Google Patents

Abstract

The utility model discloses a current collecting disc, an end cover assembly and a battery. Two ends of the bending part are respectively connected with the tray body and the mounting part. The first direction is the length direction of the current collecting disc. The bending part comprises a first end part facing the tray body and a second end part facing the installation part, at least one thinning area is arranged on the bending part, when the current collecting tray is in a folded state, the included angle between the part from the thinning area to the first end part and the part from the thinning area to the second end part is adjustable, and the relative position between the tray body and the installation part is adjusted. By providing the thinned region on the bending portion, the bending portion body can be bent at least once. In the assembling process of the current collecting disc, the bending capability of the current collecting disc in a folded state is improved, the self-adaptability of the current collecting disc in the battery assembling process is improved, and the assembly of the battery core and the end cover assembly is further ensured to meet the design requirement.

Description

Current collecting disc, end cover assembly and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a current collecting disc, an end cover assembly and a battery.

Background

The current collecting disk is one of the important components of the full tab battery for drawing the electrical energy of the battery core outwardly to the positive or negative terminal of the battery. One end of the current collecting disc is connected with the battery cell in a welding mode, and after the current collecting disc is bent, the other end of the current collecting disc is connected with the cover plate in a welding or riveting mode.

Because the current collecting disc has processing errors in bending processing, the cover plate and the battery cell cannot be coaxial, or a gap exists between the cover plate and the battery cell. Most of the current collecting discs cannot be bent again, so that the assembly between the cover plate and the battery cell does not meet the assembly requirement.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a current collecting disc, which improves the bending capability of the current collecting disc in a folded state, increases the self-adaptability of the current collecting disc in the battery assembly process, and further ensures that the assembly of the battery core and the end cover assembly meets the design requirement.

The utility model further provides an end cap assembly.

The utility model further provides a battery.

According to an embodiment of the first aspect of the present utility model, the current collecting tray includes a tray body bending portion and a mounting portion sequentially arranged in a first direction. Two ends of the bending part are respectively connected with the tray body and the mounting part, the first direction is the length direction of the current collecting tray,

the bending part comprises a first end part facing the tray body and a second end part facing the mounting part, at least one thinning area is arranged on the bending part, when the current collecting tray is in a folded state, the included angle between the part from the thinning area to the first end part and the part from the thinning area to the second end part is adjustable, and the relative position between the tray body and the mounting part is adjusted.

According to the embodiment of the utility model, the bending part body can be bent at least once by arranging the thinning area on the bending part. In the assembling process of the current collecting disc, the bending capacity of the bending part of the current collecting disc in a folded state is improved, the self-adaptability of the current collecting disc in the battery assembling process is improved, and the assembly of the battery core and the end cover assembly is further ensured to meet the design requirement.

According to some embodiments of the utility model, the thinned region is configured as a groove. The device is convenient to process, and is beneficial to reducing the manufacturing cost of the current collecting disc.

According to some embodiments of the utility model, the thickness of the bending portion is T, and the depth of the groove is T, t= (1/3-2/3) T. So set up, under the prerequisite that can bend of assurance recess department, avoid recess department to appear the fracture phenomenon.

According to some embodiments of the utility model, the grooves have a dimension L1 in the first direction, and the distance between two adjacent grooves is L2, wherein L1 is equal to or greater than 1/2L2. By means of the arrangement, proper grooves can be selected from the grooves so as to properly adjust the relative positions between the disc body and the mounting part, and the assembly requirements of the battery cell and the end cover assembly can be met by one-time bending.

According to some embodiments of the utility model, the groove has an opening and a bottom end, the groove being divergent in the direction of the bottom end towards the opening, the cross section of the groove being isosceles trapezoid or V-shaped. The outline of the groove is smoothly transited, so that stress concentration is reduced, and the problem of fracture caused by overlarge stress generated in the groove area is avoided. The isosceles trapezoid or the V-shape is convenient to process, and the processing size is guaranteed.

According to some embodiments of the utility model, the depth of the groove increases or decreases in the width direction at the bend. The arrangement further facilitates the bending of the bending part again

According to some embodiments of the utility model, the groove is a stepped groove. The stepped grooves are convenient to process and low in manufacturing cost.

According to some embodiments of the utility model, corners of the grooves are rounded. Therefore, the outline of the groove is further smoothly transited, and the stress concentration of the transition area is further reduced.

According to some embodiments of the present utility model, a first transition region is provided between the disc body and the bending portion, a second transition region is provided between the bending portion and the mounting portion, and a plurality of thinning regions may be further disposed in the first transition region and/or the second transition region. By means of the arrangement, proper grooves can be selected in the first transition area and the second transition area so as to properly adjust the relative positions between the disc body and the mounting portion, and the assembly requirements of the battery cell and the end cover assembly can be met by bending once.

According to some embodiments of the utility model, the bending portion is provided with a plurality of thinning areas along the first direction, the thinning areas extend along a second direction, and the second direction is perpendicular to the first direction. Therefore, the bending part can be bent for a plurality of times, and the bending capability of the current collecting disc in a folded state is further improved.

According to some embodiments of the utility model, the plurality of grooves are located on the same side surface of the bend. By the arrangement, all the grooves can be machined at one time, and machining is convenient.

An end cap assembly according to an embodiment of the second aspect of the present utility model includes the manifold disk of the above-described embodiment.

According to the end cover assembly provided by the embodiment of the utility model, the bending capability of the current collecting disc in a folded state is improved, the self-adaptability of the current collecting disc in the battery assembly process is improved, and the assembly of the battery core and the end cover assembly is further ensured to meet the design requirement.

An embodiment of a third aspect of the utility model is a battery comprising the end cap assembly of the above embodiment.

According to the battery provided by the embodiment of the utility model, the bending capability of the current collecting disc in a folded state is improved, the self-adaptability of the current collecting disc in the battery assembly process is improved, and the assembly of the battery core and the end cover assembly is further ensured to meet the design requirement.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a top view of a first current collecting tray according to an embodiment of the present utility model;

fig. 2 is a front view of a first manifold plate according to an embodiment of the present utility model;

FIG. 3 is a partial enlarged view A of FIG. 2;

fig. 4 is a schematic view of a first current collecting tray according to an embodiment of the present utility model in a folded state;

fig. 5 is a top view of a second current collecting tray according to an embodiment of the present utility model;

fig. 6 is a front view of a second current collecting plate according to an embodiment of the present utility model;

fig. 7 is a partial enlarged view B of fig. 6;

fig. 8 is a front view of a third current collecting plate according to an embodiment of the present utility model;

fig. 9 is a front view of a fourth current collecting plate according to an embodiment of the present utility model;

fig. 10 is a partial enlarged view C of fig. 9;

fig. 11 is a top view of a fifth manifold disk according to an embodiment of the utility model;

fig. 12 is a front view of a fifth manifold plate according to an embodiment of the present utility model;

fig. 13 is a top view of a sixth current collecting plate according to an embodiment of the present utility model;

fig. 14 is a front view of a sixth current collecting plate according to an embodiment of the present utility model;

FIG. 15 is a schematic structural view of an end cap assembly according to an embodiment of the present utility model;

fig. 16 is an assembled schematic diagram of a battery according to an embodiment of the present utility model;

fig. 17 is a second schematic view of the assembly of a battery according to an embodiment of the utility model;

reference numerals:

the current collecting tray 100, the tray body 10, the bending part 20, the upper bending part 201, the lower bending part 202, the groove 21, the rounded corner 211, the notch 22, the first end bending 221, the second end bending 221,

the mounting portion 30, the first transition region 40, the first recess 41, the second transition region 50, the second recess 51,

end cap assembly 200, cell 300.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

A current collecting tray, an end cap assembly, and a battery according to an embodiment of the present utility model are described below with reference to the accompanying drawings.

As shown in fig. 1 to 14, a current collecting tray 100 according to an embodiment of the first aspect of the present utility model includes a tray body 10, a bent portion 20, and a mounting portion 30 sequentially arranged in a first direction, both ends of the bent portion 20 being connected to the tray body 10 and the mounting portion 30, respectively.

The bent portion 20 includes a first end portion facing the tray 10 and a second end portion facing the mounting portion 30.

At least one thinning area is arranged on the bending part 20, when the current collecting disc 100 is in a folded state, an included angle between the part from the thinning area to the first end part and the part from the thinning area to the second end part is adjustable, and the relative position between the disc body 10 and the mounting part 30 is adjusted.

Specifically, in the embodiment of the present utility model, the current collecting plate 100 may be bent, that is, the current collecting plate 100 has an unfolded state and a folded state. Wherein, when the current collecting tray 100 is not assembled into the end cap assembly 200, the current collecting tray 100 is in an unfolded state, that is, as shown in fig. 1 or 2.

And when the current collecting plate 100 is assembled into the end cap assembly 200, the current collecting plate 100 is in a folded state as shown in fig. 4. That is, a first transition region 40 is provided between the disk 10 and the bent portion 20, and a second transition region 50 is provided between the bent portion 20 and the mounting portion 30. A first groove 41 is arranged in the first transition area 40 so that the included angle between the tray body 10 and the bending part 20 is changed from 180 degrees to an acute angle beta; a second recess 51 is provided in the second transition 50 to change the angle between the bent portion 20 and the mounting portion 30 from 180 ° to an acute angle γ, as shown in fig. 4.

It should be noted that, the first direction is the direction C2 in fig. 1 or fig. 5, that is, the length direction of the current collecting plate 100, and the second direction is perpendicular to the first direction, that is, the direction C1.

The bent portion 20 includes a first end portion facing the tray 10 and a second end portion facing the mounting portion 30. At least one thinning area is arranged on the bending part 20. For example, the thinned region may be a groove, and the thickness of the part of the bending portion 20 is thinned, so that the part of the bending portion 20 can be bent; for example, the thinning region may be used to thin the bending portion 20, so that the thickness of the bending portion 20 is reduced entirely, which is helpful for bending at any position of the bending portion 20; for example, the thinned region may be thinned to the bent portion 20 portion. The specific arrangement manner of the thinning area in this embodiment is not illustrated one by one.

An example of a thinned region is provided on the bending portion 20:

when the current collecting tray 100 is in the folded state, the tray body 10 and the mounting portion 30 are oppositely disposed, and the angle α between the portion from the thinned area of the bending portion 20 to the first end (or the lower bending portion 202 of the bending portion 20) and the portion from the thinned area of the bending portion 20 to the second end (or the upper bending portion 201 of the bending portion 20) is adjustable, that is, the relative position between the tray body 10 and the mounting portion 30 is changed by adjusting the angle α, as shown in fig. 4: the thinning area divides the bending part 20 into an upper bending part 201 and a lower bending part 202, and an included angle between the lower bending part 202 and the disc body 10 is beta; the angle between the upper bending portion 201 and the mounting portion 30 is γ. The angle α between the upper bending portion 201 and the lower bending portion 202 may be changed, and thus the above-mentioned angles γ and β may be adjusted, thereby adjusting the relative position between the tray 10 and the mounting portion 30. The term "relative position" as used herein is understood to mean that the positional relationship between the disk 10 and the mounting portion 30 in the left-right direction can be adjusted, and that the positional relationship between the disk 10 and the mounting portion 30 in the up-down direction can be adjusted.

When the battery is assembled, the tray body 10 of the current collecting tray 100 in a folded state is connected with the battery cell 300, and the mounting portion 30 is connected with the cover plate of the end cap assembly 200. When the gap between the battery cell 300 and the end cover assembly 200 does not meet the assembly requirement, the included angle alpha between the upper bending part 201 and the lower bending part 202 of the bending part 20 can be adjusted through the thinning area, so that the relative position between the disc body 10 and the mounting part 30 is adjusted, and the gap between the battery cell 300 and the end cover assembly 200 meets the assembly requirement. Or, when the battery cell 300 and the end cover assembly 200 (cover plate) cannot be coaxially arranged (or aligned, the included angle α between the upper bending portion 201 and the lower bending portion 202 of the bending portion 20 can be adjusted by the thinning region, so as to adjust the relative position between the tray body 10 and the mounting portion 30, thereby coaxially arranging (or aligned) the battery cell 300 and the end cover assembly 200 (cover plate).

Therefore, according to the embodiment of the present utility model, by providing the thinned region on the bending portion 20, the bending portion 20 itself can be bent at least once. In the assembling process of the current collecting disc, the bending capability of the bending part 20 of the current collecting disc 100 in a folded state is improved, the self-adaptability of the current collecting disc 100 in the battery assembling process is improved, and the assembly of the battery cell 300 and the end cover assembly is further ensured to meet the design requirement.

In some embodiments of the present utility model, the thinned region is configured as a groove 21.

It should be noted that, in practical applications, the first groove 41 in the first transition region 40 and the second groove 51 in the second transition region 50 may have the same structure as the first groove, the second groove and the thinning region, i.e. the thinning region is also configured as the groove 21. So arranged, the processing is facilitated, which helps to reduce the manufacturing cost of the manifold plate 100.

In some embodiments of the present utility model, a plurality of thinned regions are disposed on the bending portion 20 along the first direction, and the thinned regions extend along the second direction.

In a specific embodiment, as shown in fig. 9, a plurality of grooves 21 are sequentially arranged in the C2 direction on the bent portion 20, and each groove 21 extends in the C1 direction. Adjacent two grooves 21 may be arranged at unequal intervals therebetween. The distance between any adjacent two grooves 21 is not particularly limited in this embodiment.

In this way, it can be seen that the bending portion 20 can be bent several times, and the bending ability of the current collecting tray 100 in the folded state can be further improved.

In another specific embodiment, as shown in fig. 5 and 6, a plurality of grooves 21 are sequentially arranged in the C2 direction on the folded portion 20, each groove 21 extending in the C1 direction. Adjacent two grooves 21 may be arranged with an equal spacing L2 therebetween. The dimension of the groove 21 in the first direction is set to L1, that is, the width dimension of the groove 21. The distance between two adjacent grooves 21 is L2, and L1 is more than or equal to 1/2L2.

In some embodiments of the present utility model, as shown in fig. 3, the thickness of the bending portion 20 is T, the depth of the groove 21 is T, and t= (1/3-2/3) T. So set up, under the prerequisite that can bend of guaranteeing recess 21 department, avoid recess 21 department to appear the fracture phenomenon.

In some embodiments of the present utility model, as shown in fig. 1 or 5, the size of the groove 21 in the C1 direction is equal to the size of the bent portion 20 in the C1 direction. This arrangement facilitates the re-bending of the folded portion 20.

Of course, it is understood that in some embodiments, the dimension of the groove 21 in the C1 direction may be slightly smaller than the dimension of the bend 20 in the C1 direction.

In some embodiments of the utility model, the recess 21 has an opening and a bottom end that tapers in a direction toward the opening.

As shown in fig. 9 and 10, a groove 21 is formed in the surface of the bending portion 20 in a recessed manner, and the groove 21 is gradually widened from the inside of the bending portion 20 toward the surface of the bending portion 20, that is, the opening of the groove 21 is larger than the bottom of the groove 21, and the groove 21 gradually expands.

Further, the cross section of the groove 21 is isosceles trapezoid or V-shape. The shape is convenient to process, and the processing size is guaranteed. Wherein preferably the cross-section of the recess 21 is V-shaped.

Further, as shown in fig. 10, both ends of the groove 21 are rounded 211. The surface of the bending part 20 and the opening transition area of the groove 21 are rounded 211; the bottom of the groove 21 and the sidewall rounding 211 of the groove 21 are processed, so that the profile of the groove 21 is further smoothly transited, and the stress concentration of a transition region is further reduced.

In some embodiments of the present utility model, the plurality of grooves 21 are located on the same side surface of the folded portion 20.

As shown in fig. 9, a first groove 41 is formed in the first transition region 40, and a second groove 51 is formed in the second transition region 50, wherein the first and second grooves are oriented in the same direction. 3 grooves 21 are formed in the bending portion 20, and the directions of the 3 grooves 21 are the same. Meanwhile, the 3 grooves 21 are oriented in the same direction as the first and second grooves. By the arrangement, all the grooves can be machined at one time, and machining is convenient.

Of course, it is understood that in some embodiments, as shown in fig. 8, the directions of the 4 grooves 21,4 grooves 21 formed on the bending portion 20 may not be identical.

In some embodiments of the present utility model, the depth of the groove 21 increases or decreases in the width direction at the bent portion 20.

It should be noted that the depth of the groove 21 may be increased in the width direction of the bent portion 20, that is, the C1 direction. For example, the groove 21 is a stepped groove, and the groove 21 is divided into three sections in the C1 direction: the depths of the first, second and third sections may be sequentially increased.

In some embodiments, the depth of the groove 21 may be gradually increased. For example, the depth of the groove 21 may gradually increase in the C1 direction. This arrangement further facilitates the re-bending of the folded portion 20. In addition, the stepped grooves are convenient to process and low in manufacturing cost.

Of course, it is understood that the depth of the groove 21 may decrease in the width direction of the bent portion 20, that is, the C1 direction. Reference is made to the above description, and thus will not be repeated.

In some embodiments of the present utility model, the thickness of the fold 20 is in the range of 0.05mm,0.30 mm. For example, the thickness of the bent portion 20 may be 0.05mm, 0.09mm, 0.11mm, 0.15mm, 0.18mm, 0.20mm, 0.23mm, 0.25mm, 0.28mm, 0.30mm, or the like. Thus, the problem that the current collecting disc 100 is not easy to break under the vibration working condition of the battery is solved, and the normal bending of the current collecting disc 100 is not influenced.

In some embodiments of the present utility model, the thickness of the bending portion 20 may be the same as the thickness of the tray 10 and the mounting portion 30.

In some embodiments of the present utility model, the overall length of the fold 20 and the mount 30 is greater than the distance between any two points of the tray 10. In this way, the bending portion 20 can be bent to a large extent, and the vibration damping effect of the disk 10 can be enhanced. It should be noted that in some embodiments, the tray body 10 may be configured as a single-layer hard disk structure, so that the manufacturing cost of the current collecting tray 100 may be reduced, and the manufacturing process is easy.

In some embodiments of the present utility model, the tray body 10, the bending portion 20 and the mounting portion 30 may be integrally formed, and the structure is simple. Alternatively, the tray 10, the bent portion 20, and the mounting portion 30 may be formed as separate members, and the tray 10, the bent portion 20, and the mounting portion 30 may be integrally connected by welding.

In some embodiments of the present utility model, notches 22 are disposed on two sides of the bending portion 20 along the second direction, the notches 22 extend along the first direction, and a length of the notches 22 is less than or equal to a dimension of the bending portion 20 in the first direction.

As shown in fig. 11 and 13, notches 22 are provided on both sides of the bent portion 20 in the second direction C1, and the length of the notch 22 is equal to the dimension of the bent portion 20 in the first direction C2. That is, the dimension of the bent portion 20 in the C2 direction is smaller than the dimension of the mounting portion 30 in the C2 direction.

When the bending portion 20 is bent, the first transition region 40 can be bent 221 along the first end of the notch 22 more accurately, and the second transition region 50 can be bent 222 along the second end of the notch 22 more accurately, so that the guiding effect is better, and the phenomenon that the bending positions of the current collecting plates 100 are inconsistent when the current collecting plates 100 are bent is avoided, thereby improving the yield of the assembled battery cell 300.

In some embodiments of the present utility model, a plurality of thinned regions may also be provided in the first transition region 40 and/or the second transition region 50.

In a specific embodiment, as shown in fig. 11 and 12, 3 grooves 21 are formed in the second transition region 50, and the 3 grooves 21 are arranged at equal intervals L2 along the direction C2. By means of the arrangement, a proper groove 21 can be selected in the second transition area 50 so as to properly adjust the relative position between the disc body 10 and the mounting part 30, and the assembly requirement of the battery cell 300 and the end cover assembly can be met by one bending.

In another embodiment, as shown in fig. 13 and 14, 3 grooves 21 are formed in the first transition region 40, and the 3 grooves 21 are arranged at equal intervals L2 along the C2 direction. By means of the arrangement, a proper groove 21 can be selected in the first transition area 40 so as to properly adjust the relative position between the tray body 10 and the mounting portion 30, and the assembly requirement of the battery cell 300 and the end cover assembly can be met by one bending.

Of course, it is understood that in some embodiments, 3 grooves 21 are provided in the first transition region 40, and the 3 grooves 21 are equally spaced apart along the C2 direction by L2; on the second transition region 50, 3 grooves 21 are provided, the 3 grooves 21 being arranged at equal intervals L2 along the C2 direction.

As shown in fig. 15, the embodiment of the present utility model further provides an end cap assembly 200, where the end cap assembly 200 includes a cover plate and the current collecting plate 100 according to any embodiment of the present utility model, and the current collecting plate 100 is connected to the cover plate.

In the end cap assembly 200 of the present utility model, the bending portion body can be bent at least once by providing the thinned region in the bending portion 20. In the assembling process of the current collecting disc, the bending capability of the current collecting disc 100 in a folded state is improved, the self-adaptability of the current collecting disc 100 in the battery assembling process is improved, and the assembly of the battery cell 300 and the end cover assembly is further ensured to meet the design requirement.

As shown in fig. 16 and 17, the present utility model also provides a battery including a battery cell 300 and an end cap assembly 200 according to an embodiment of the present utility model. The end cap assembly 200 is connected to the battery cell 300.

In the battery of the present utility model, the bending portion body can be bent at least once by providing the thinned region in the bending portion 20. In the assembling process of the current collecting disc, the bending capability of the current collecting disc 100 in a folded state is improved, the self-adaptability of the current collecting disc 100 in the battery assembling process is improved, and the assembly of the battery cell 300 and the end cover assembly is further ensured to meet the design requirement.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (13)

1. A current collecting tray (100), comprising: the tray body (10), the bending part (20) and the mounting part (30) are sequentially arranged in the first direction, two ends of the bending part (20) are respectively connected with the tray body (10) and the mounting part (30), the first direction is the length direction of the collecting tray (100),

the bending part (20) comprises a first end part facing the tray body (10) and a second end part facing the mounting part (30), at least one thinning area is arranged on the bending part (20), when the current collecting tray is in a folded state, an included angle between the part from the thinning area to the first end part and the part from the thinning area to the second end part is adjustable, and the relative position between the tray body (10) and the mounting part (30) is adjusted.

2. The collecting tray (100) according to claim 1, wherein said thinned area is configured as a groove (21).

3. The collecting tray (100) according to claim 2, wherein the thickness of the bent portion (20) is T, and the depth of the groove (21) is T, t= (1/3-2/3) T.

4. The collecting tray (100) according to claim 2, wherein said grooves (21) have a dimension L1 in said first direction, and wherein the distance between two adjacent grooves (21) is L2, L1 being equal to or greater than 1/2L2.

5. The collecting tray (100) according to claim 2, wherein said recess (21) has an opening and a bottom end, said bottom end being divergent in a direction towards said opening, said recess (21) having a cross section of isosceles trapezoid or V-shape.

6. The collector plate (100) of claim 5 wherein said grooves are rounded at both ends.

7. The collecting tray (100) according to claim 2, wherein the depth of said recess (21) increases or decreases in the width direction at said bent portion (20).

8. The collecting tray (100) according to claim 7, wherein said recess (21) is a stepped groove.

9. The collecting tray (100) according to any of claims 1 to 8, wherein a first transition region (40) is provided between the tray body (10) and the bending portion (20), a second transition region (50) is provided between the bending portion (20) and the mounting portion (30), and a plurality of the thinning regions may be further provided in the first transition region (40) and/or the second transition region (50).

10. The collecting tray (100) according to any one of claims 2 to 8, wherein a plurality of said thinned regions are arranged on said bent portion (20) along said first direction, said thinned regions extending along a second direction, said second direction being perpendicular to said first direction.

11. The collecting tray (100) according to claim 10, wherein a plurality of said grooves (21) are located on the same side surface of said bent portion (20).

12. An end cap assembly (200), comprising:

a cover plate; a kind of electronic device with high-pressure air-conditioning system

The collecting tray (100) according to any one of claims 1 to 11, said collecting tray (100) being connected to said cover plate.

13. A battery, comprising:

a cell (300); a kind of electronic device with high-pressure air-conditioning system

The end cap assembly (200) of claim 12, said end cap assembly (200) being connected to said electrical cell (300).