Single battery and battery pack

Abstract

The utility model provides a single battery and a battery pack, and belongs to the technical field of single batteries. The single battery has a first direction and a second direction which are intersected, and the single battery comprises a shell, a cover plate, a first insulating part and a second insulating part; the cover is connected with the shell along the first direction to cover the accommodating cavity; the first insulating part and the cover plate are connected in the direction close to the accommodating cavity along the first direction; the second insulating part is connected with the cover plate in the direction close to the containing cavity in the first direction, the second insulating part and the first insulating part are arranged in a spaced mode in the second direction, a first protrusion is arranged at the end, close to the second insulating part, of the first insulating part, and a second protrusion is arranged at the end, close to the first insulating part, of the second insulating part. The orthographic projection of the first protrusion on the cover plate in the first direction is at least partially overlapped with the orthographic projection of the second protrusion on the cover plate in the first direction. According to the single battery provided by the invention, the first bulge can slide to one side, facing the cover plate, of the second bulge under the action of external force, so that the performance of the single battery is ensured.

Description

Technical Field

[0001] This application relates to the field of single-cell battery technology, and more particularly to a single-cell battery and battery pack. Background Technology

[0002] The primary function of a single battery cell is to store electrical energy and provide a stable current to external devices when needed. This capability makes single batteries an indispensable energy source for various electronic devices.

[0003] When the existing single-cell battery has two insulating components, each insulating component has a protrusion located in the gap between the two insulating components. During transportation, the insulating components will move due to bumps and vibrations. The protrusion of the moved insulating component will get stuck under the protrusion of the other insulating component, causing the moved insulating component to press against the electrode assembly. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a single cell battery and a battery pack.

[0005] This application provides the following technical solution: a single-cell battery having intersecting first and second directions, including:

[0006] case;

[0007] A cover plate is connected to the housing along the first direction;

[0008] A first insulating member and a second insulating member are both disposed within the housing and are spaced apart along the second direction. Both the first insulating member and the second insulating member are connected to the side of the cover plate near the housing. The first insulating member has a first protrusion at the end near the second insulating member, and the second insulating member has a second protrusion at the end near the first insulating member. The first protrusion and the second protrusion are spaced apart along the first direction. The orthographic projection of the first protrusion along the first direction onto the cover plate at least partially overlaps with the orthographic projection of the second protrusion along the first direction onto the cover plate.

[0009] The first protrusion has a first guide surface at the end near the second protrusion, and the second protrusion has a second guide surface at the end near the first protrusion.

[0010] In some embodiments, the first guide surface is a first inclined surface, and the first inclined surface is set at an angle to the plane in which the cover plate is projected along the first direction;

[0011] The second guide surface is a second inclined surface, which is set at an angle to the plane on which the cover plate is projected along the first direction, and the second inclined surface is set parallel to the first inclined surface.

[0012] In some embodiments, the first protrusion is disposed close to the cover plate along the first direction, and the width of the first protrusion along the second direction increases from the side close to the cover plate to the side away from the cover plate;

[0013] The width of the second protrusion along the second direction decreases from the side closer to the cover plate to the side farther away from the first insulator.

[0014] In some embodiments, the first guide surface is a first arc surface, the first protrusion is disposed close to the cover plate along the first direction, and the first arc surface protrudes in the direction close to the second insulating member;

[0015] The second guide surface is a second arc surface, the second protrusion is away from the cover plate along the first direction, and the second arc surface protrudes in the direction close to the first insulating element.

[0016] In some embodiments, the first protrusion has a first top wall and a first bottom wall disposed opposite to each other along the first direction, wherein the width of the first top wall along the second direction is smaller than the width of the first bottom wall along the second direction;

[0017] The second protrusion has a second top wall and a second bottom wall disposed opposite to each other along the first direction, wherein the width of the second top wall along the second direction is greater than the width of the second bottom wall along the second direction.

[0018] In some embodiments, there are multiple first protrusions, which are spaced apart along the first direction, and there is at least one second protrusion, which is located between adjacent first protrusions.

[0019] In some embodiments, the first insulating member includes a first support platform disposed near the second insulating member, and the second insulating member includes a second support platform disposed near the first support platform. Both the first support platform and the second support platform extend in a direction away from the cover plate along the first direction. The first support platform is provided with a first protrusion, and the second support platform is provided with a second protrusion. The single cell also includes an electrode assembly disposed within the housing, and the electrode assembly abuts against the first support platform along the first direction.

[0020] In some embodiments, the height of the first support platform along the first direction is greater than the height of the second support platform along the first direction.

[0021] In some embodiments, the first insulating member further includes a third support platform opposite to the second insulating member, the third support platform protruding toward the side opposite to the cover plate, and the second insulating member further includes a fourth support platform opposite to the first insulating member, the fourth support platform protruding toward the side opposite to the cover plate.

[0022] The electrode assembly abuts against the third support platform and the fourth support platform along the first direction.

[0023] Secondly, this application provides a battery pack including the aforementioned single battery cell.

[0024] The embodiments of this application have the following advantages: by at least partially overlapping the orthographic projections of the first protrusion and the second protrusion along the first direction on the cover plate, and by spaced the first protrusion and the second protrusion along the first direction, the insulation barrier quality of the first insulating member and the second insulating member between the electrode assembly and the cover plate is ensured, thereby ensuring the stability of the single cell; by providing a first guide surface on the side of the first protrusion near the second protrusion and a second guide surface on the side of the second protrusion near the first protrusion, the first guide surface can make smooth contact with the second guide surface to provide a guiding effect on the first protrusion and the second protrusion, so that the first protrusion can slide relative to the second protrusion under the action of external force and move to the initial position, thereby ensuring the performance of the single cell.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This paper shows a schematic diagram of the structure of a single-cell battery from one perspective, based on some embodiments of this application.

[0028] Figure 2 An exploded view of a single-cell battery provided by some embodiments of this application is shown;

[0029] Figure 3 This invention provides a schematic diagram of the structure of a cover plate in a single-cell battery in a first state according to a first embodiment.

[0030] Figure 4This invention provides a schematic diagram of the second state of a cover plate in a single-cell battery according to a first embodiment.

[0031] Figure 5 This invention provides a schematic diagram of the structure of a cover plate in a single-cell battery in a first state according to a second embodiment of some embodiments of the present application.

[0032] Figure 6 It shows Figure 5 Enlarged view of section A;

[0033] Figure 7 This invention provides a schematic diagram of the second state of a cover plate in a single-cell battery according to a second embodiment of some embodiments of the present application;

[0034] Figure 8 It shows Figure 7 Enlarged view of section B;

[0035] Figure 9 This invention provides a schematic diagram of the structure of a cover plate in a single-cell battery in a third embodiment, showing a first state according to some embodiments of the present application.

[0036] Figure 10 It shows Figure 9 Enlarged view of section C;

[0037] Figure 11 This invention provides a schematic diagram of the second state of a cover plate in a single-cell battery according to a third embodiment of some embodiments of the present application.

[0038] Figure 12 It shows Figure 11 Enlarged view of section D in the middle;

[0039] Figure 13 This invention provides a schematic diagram of the structure of a cover plate in a single-cell battery in a first state according to a fourth embodiment.

[0040] Figure 14 It shows Figure 13 Enlarged view of section E in the middle;

[0041] Figure 15 This invention provides a schematic diagram of the second state of a cover plate in a single-cell battery according to a fourth embodiment.

[0042] Figure 16 It shows Figure 15 Enlarged view of section F in the middle.

[0043] Explanation of key component symbols:

[0044] 100 - Housing; 110 - Receiving cavity; 200 - Cover plate; 300 - First insulating element; 400 - Second insulating element; 310 - First protrusion; 410 - Second protrusion; 320 - First guide surface; 420 - Second guide surface; 321 - First inclined surface; 421 - Second inclined surface; 322 - First arc surface; 311 - First top wall; 312 - First bottom wall; 422 - Second arc surface; 411 - Second top wall; 412 - Second bottom wall; 330 - First support platform; 430 - Second support platform; 340 - Third support platform; 440 - Fourth support platform; 500 - Electrode assembly.

[0045] X - First direction; Y - Second direction. Detailed Implementation

[0046] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0047] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0051] like Figures 1 to 4 As shown, some embodiments of this application provide a single cell battery having intersecting first direction X and second direction Y, mainly used to prevent the tabs from touching the cover plate and to prevent the lower plastic from pressing against the electrode sheet in the event of vibration or bumps, so as to ensure the stability of the cell performance.

[0052] The single cell includes a casing 100, a cover plate 200, a first insulating component 300, and a second insulating component 400.

[0053] The housing 100 defines a receiving cavity 110, and the cover plate 200 is connected to the housing 100 along the first direction X to cover the receiving cavity 110.

[0054] The first insulating member 300 and the second insulating member 400 are both disposed inside the housing 100 and housed in the receiving cavity 110. The first insulating member 300 and the second insulating member 400 are respectively arranged at intervals along the second direction Y. The first insulating member 300 and the second insulating member 400 are both connected to the side of the cover plate 200 near the housing 100. The connection method between the first insulating member 300 and the second insulating member 400 and the cover plate 200 includes any one of bonding, snap-fitting, bolting, or integral molding, which can be specifically set according to the actual situation.

[0055] In addition, the first insulating member 300 has a first protrusion 310 at one end near the second insulating member 400, and the second insulating member 400 has a second protrusion 410 at one end near the first insulating member 300. The first protrusion 310 and the second protrusion 410 are spaced apart along the first direction X. The orthographic projection of the first protrusion 310 along the first direction X onto the cover plate 200 and the orthographic projection of the second protrusion 410 along the first direction X onto the cover plate 200 at least partially overlap, so that the first insulating member 300 and the second insulating member 400 form an insulating barrier between the cover plate 200 and the electrode assembly 500 disposed in the receiving cavity 110, thereby ensuring the stability of the single cell.

[0056] In this embodiment, the first protrusion 310 has a first guide surface 320 at one end near the second protrusion 410, and the second protrusion 410 has a second guide surface 420 at one end near the first protrusion 310. The first guide surface 320 and the second guide surface 420 are in smooth contact, so that the first protrusion 310 can make the first guide surface 320 and the second guide surface 420 in smooth contact under the action of external force, thereby providing a guiding effect for the first protrusion 310 and the second protrusion 410. This allows the first protrusion 310 to slide relative to the second protrusion 410 under the action of external force and move to its initial position, thereby resetting the first protrusion 310 and ensuring the performance of the single cell. In other words, the single cell provided by this application can not only ensure that the first protrusion 310 or the second protrusion 410 is reset under the action of external force, but also ensure the insulation quality of the first insulating member 300 and the second insulating member 400 in the housing 100.

[0057] It should be noted that, in this embodiment, the initial position of the first protrusion 310 means that the first protrusion 310 is located on the side of the second protrusion 410 facing the cover plate 200.

[0058] like Figures 5 to 8 As shown, in some embodiments of this application, the first guide surface 320 is a first inclined surface 321, and the first inclined surface 321 is set at an angle to the plane in which the cover plate 200 is projected along the first direction X. It can be understood that the included angle between the first inclined surface 321 and the side of the cover plate 200 near the first protrusion 310 can be specifically set according to the actual situation.

[0059] The second guide surface 420 is a second inclined surface 421. The second inclined surface 421 is set at an angle to the plane on which the cover plate 200 is projected along the first direction X, and the second inclined surface 421 is set parallel to the first inclined surface 321 so that the first inclined surface 321 and the second inclined surface 421 can make smooth contact.

[0060] It should be noted that in this application, the positional relationship between the second inclined surface 421 and the first inclined surface 321 can also be intersecting or perpendicular; that is, the positional relationship between the second inclined surface 421 and the first inclined surface 321 is not absolute. In this embodiment, the positional relationship between the second inclined surface 421 and the first inclined surface 321 is determined by the positional relationship between the first insulating member 300 and the second insulating member 400.

[0061] In some embodiments, the angle between the side of the first inclined surface 321 near the cover plate 200 and the side of the cover plate 200 near the first protrusion 310 is less than 90°. This ensures that when the first protrusion 310 falls to the side of the second protrusion 410 away from the cover plate 200 due to vibration or bumps to the single cell, the first inclined surface 321 and the second inclined surface 421 slide into contact. This allows the first protrusion 310 to move smoothly under the force from the first protrusion 310 toward the cover plate 200 along the first direction X. This allows the first protrusion 310 to slide to the side of the second protrusion 410 toward the cover plate 200 and reset the first protrusion 310, thus ensuring the stability of the single cell.

[0062] like Figure 5 and Figure 6 As shown, in some embodiments of this application, the first protrusion 310 is disposed close to the cover plate 200 along the first direction X. It can be understood that the first protrusion 310 is located between the second protrusion 410 and the cover plate 200.

[0063] The width of the first protrusion 310 along the second direction Y increases from the side closer to the cover plate 200 to the side farther from the cover plate 200. That is, the first guide surface 320 faces the cover plate 200, and the distance from the first guide surface 320 to the cover plate 200 along the second direction Y decreases from the side closer to the second protrusion 410 to the side farther from the second protrusion 410.

[0064] It is understandable that, such as Figure 7 and Figure 8 As shown, if a single cell is subjected to bumps or vibrations, when the first protrusion 310 moves to the side of the second protrusion 410 away from the housing 100, the first guide surface 320 provided on the first protrusion 310 can smoothly contact the second protrusion 410 to ensure that the first protrusion 310 can slide relative to the second protrusion 410 under the action of an external force along the first direction X, and smoothly move between the second protrusion 410 and the cover plate 200, thereby resetting the first protrusion 310 and preventing the first insulating member 300 from affecting the space inside the receiving cavity 110, so as to ensure the stability of the space inside the receiving cavity 110, thereby ensuring the stability of the electrode assembly 500 installed in the receiving cavity 110.

[0065] Furthermore, the width of the second protrusion 410 along the second direction Y decreases from the side closer to the cover plate 200 to the side farther from the first insulating member 300. That is, the second guide surface 420 is away from the cover plate 200 along the first direction X, meaning the distance from the second guide surface 420 to the cover plate 200 increases along the second direction Y from the side closer to the first protrusion 310 to the side farther from the first protrusion 310. It is understood that if a single battery cell experiences bumps or vibrations, and the first protrusion 310 moves to the side of the second protrusion 410 away from the housing 100, the second guide surface 420 on the second protrusion 410 can smoothly contact the first guide surface 320 to ensure that the first protrusion 310 can slide relative to the second protrusion 410 under the action of an external force along the first direction X, and smoothly move between the second protrusion 410 and the cover plate 200, thereby resetting the first protrusion 310.

[0066] like Figures 9 to 12 As shown, in some embodiments of this application, the first guide surface 320 is a first arc surface 322, the first protrusion 310 is disposed close to the cover plate 200 along the first direction X, the first arc surface 322 protrudes in the direction close to the second insulating member 400, and forms a smooth first guide surface 320, that is, the first protrusion 310 is disposed between the second protrusion 410 and the cover plate 200.

[0067] In addition, the second guide surface 420 is a second arc surface 422, the second protrusion 410 is away from the cover plate 200 along the first direction X, and the second arc surface 422 protrudes towards the first insulating member 300, forming a smooth second guide surface 420.

[0068] Understandably, when the first protrusion 310 moves to the side of the second protrusion 410 away from the housing 100, the first arc surface 322 can smoothly contact the second arc surface 422 to ensure that the first protrusion 310 can slide relative to the second protrusion 410 under the action of an external force along the first direction X, and smoothly move between the second protrusion 410 and the cover plate 200, thereby resetting the first protrusion 310 and preventing the first insulating member 300 from affecting the space inside the receiving cavity 110, so as to ensure the stability of the space inside the receiving cavity 110, thereby ensuring the stability of the electrode assembly 500 installed in the receiving cavity 110.

[0069] like Figures 13 to 16As shown, in some embodiments of this application, the first protrusion 310 has a first top wall 311 and a first bottom wall 312 disposed opposite to each other along the first direction X. The width of the first top wall 311 along the second direction Y is smaller than the width of the first bottom wall 312 along the second direction Y, so that the first top wall 311 and the first bottom wall 312 are connected by a first guide surface 320, thereby forming a smooth connection and smooth guidance between the first top wall 311 and the first bottom wall 312 through the first guide surface 320. Additionally, the second protrusion 410 has a second top wall 411 and a second bottom wall 412 disposed opposite to each other along the first direction X. The width of the second top wall 411 along the second direction Y is larger than the width of the second bottom wall 412 along the second direction Y, so that a smooth connection and smooth guidance are formed between the second top wall 411 and the second bottom wall 412 through a second guide surface. The process of ensuring smooth guidance between the first guide surface 320 and the second guide surface 420 during their contact ensures that the first insulating member 300 or the second insulating member 400 returns to its initial position, thereby ensuring the stability of the internal space of the housing 100.

[0070] like Figures 13 to 16 As shown, in some embodiments of this application, there are multiple first protrusions 310, and the multiple first protrusions 310 are spaced apart along the first direction X, and there is at least one second protrusion 410.

[0071] In some embodiments, the number of second protrusions 410 is one, and the second protrusion 410 is located between two adjacent first protrusions 310.

[0072] In other embodiments, there are multiple second protrusions 410, which are spaced apart along the first direction X, and the multiple first protrusions 310 and the multiple second protrusions 410 are arranged alternately along the first direction X. The alternate arrangement can better prevent the tabs from contacting the cover plate 200.

[0073] It is understandable that the number of the first protrusion 310 and the second protrusion 410 can be any number of two or more values, and can be set according to the actual situation.

[0074] For example, in this embodiment, there are two first protrusions 310 and two second protrusions 410, and the first protrusions 310 and the second protrusions 410 are arranged alternately along the first direction X.

[0075] like Figures 2 to 5As shown, in some embodiments of this application, the first insulating member 300 includes a first support platform 330 disposed near the second insulating member 400, and the second insulating member 400 includes a second support platform 430 disposed near the first support platform 330. Both the first support platform 330 and the second support platform 430 extend in the direction away from the cover plate 200 along the first direction X, and the first support platform 330 and the second support platform 430 are spaced apart along the second direction Y.

[0076] In this embodiment, the first support platform 330 is provided with the first protrusion 310, and the second support platform 430 is provided with the second protrusion 410. It should be noted that the first protrusion 310 is provided on the side of the first support platform 330 facing the second support platform 430, and the second protrusion 410 is provided on the side of the second support platform 430 facing the first support platform 330.

[0077] Additionally, it should be noted that the single-cell battery also includes the electrode assembly 500 described in any of the above embodiments. This electrode assembly 500 is disposed within the housing 100, i.e., housed in the receiving cavity 110, and abuts against the first support platform 330 along the first direction X. It is understood that when the electrode assembly 500 is disposed in the receiving cavity 110, the side of the first support platform 330 facing away from the cover plate 200 abuts against the side of the electrode assembly 500 facing the cover plate 200, and the first support platform 330 and the inner wall of the housing 100 limit the electrode assembly 500, ensuring its stability within the receiving cavity 110. Simultaneously, the first insulating member 300 and the second insulating member 400 insulate and separate the electrode assembly 500 disposed in the receiving cavity 110 from the cover plate 200, thereby ensuring the stability of the single-cell battery.

[0078] like Figures 3 to 5 As shown, in some embodiments of this application, the height of the first support platform 330 along the first direction X is greater than the height of the second support platform 430 along the first direction X.

[0079] It should be noted that, since the first protrusion 310 and the second protrusion 410 are offset along the first direction X, in some embodiments, the first protrusion 310 is disposed between the second protrusion 410 and the cover plate 200. When the first protrusion 310 falls to the side of the second protrusion 410 away from the cover plate 200, the distance from the side of the first support platform 330 away from the cover plate 200 to the cover plate 200 is still greater than the distance from the side of the second support platform 430 away from the cover plate 200 to the cover plate 200. At this time, the first guide surface 320 and the second guide surface 420 are in smooth contact. When the electrode assembly 500 is installed in the receiving cavity 110, the side of the electrode assembly 500 facing the cover plate 200 can abut against the first support platform 330 and exert a force on the first support platform 330 along the first direction X towards the cover plate 200. The first protrusion 310 slides relative to the second protrusion 410. Through the guiding effect of the first guide surface 320 and the second guide surface 420, the first protrusion 310 moves between the second protrusion 410 and the cover plate 200, thereby resetting the first support platform 330 and the first protrusion 310 to ensure the stability of the electrode assembly 500 in the receiving cavity 110.

[0080] In addition, such as Figure 3 and Figure 4 As shown, in some embodiments, the first protrusion 310 is disposed on the side of the second protrusion 410 away from the cover plate 200. Since the height of the first support platform 330 along the first direction X is greater than the height of the second support platform 430 along the first direction X, even if the second protrusion 410 falls down to the side of the first protrusion 310 away from the cover plate 200 along the first direction X, the height of the second support platform 430 along the first direction X is still less than the height of the first support platform 330 along the first direction X. In other words, the movement of the second protrusion 410 will not affect the effective utilization space inside the receiving cavity 110, thereby ensuring that the electrode assembly 500 can be stably installed in the receiving cavity 110.

[0081] like Figures 3 to 5 As shown, in some embodiments of this application, the first insulating member 300 further includes a third support platform 340 opposite to the second insulating member 400, the third support platform 340 protruding to the side opposite to the housing 100, and the second insulating member 400 further includes a fourth support platform 440 opposite to the first insulating member 300, the fourth support platform 440 protruding to the side opposite to the housing 100.

[0082] The third support platform 340 and the fourth support platform 440 both extend along the first direction X in a direction away from the cover plate 200. The height of the third support platform 340 along the first direction X is the same as the height of the fourth support platform 440 along the first direction X. Furthermore, the electrode assembly 500 abuts against the third support platform 340 and the fourth support platform 440 along the first direction X to ensure the stability and consistency of the supporting effect of the third support platform 340 and the fourth support platform 440 on the electrode assembly 500, and to prevent the electrode assembly 500 from tilting in the receiving cavity 110.

[0083] like Figure 1 and Figure 2 As shown, in some embodiments of this application, the electrode assembly 500 abuts against the first support platform 330 along the first direction X, so that the first support platform 330 and the inner wall of the housing 100 form a limiting effect on the electrode assembly 500, so as to ensure the stability of the electrode assembly 500 in the receiving cavity 110. At the same time, during the process of installing the electrode assembly 500 in the receiving cavity 110, pressure can be provided to the first support platform 330 along the first direction X towards the side of the housing 100, thereby enabling the first protrusion 310 and the first support platform 330 to reset.

[0084] This application provides a battery pack comprising the individual battery cells described in any of the above embodiments.

[0085] It is understood that the battery pack has the structure of the single cell described in any of the above embodiments and the beneficial effects thereof, which will not be elaborated here.

[0086] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0087] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0088] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A single cell having a first direction (X) and a second direction (Y) intersecting, characterized by, The utility model relates to a shell (100);Cover plate (200) is connected with the shell (100) along the first direction (X); First insulating piece (300) and second insulating piece (400) are arranged in the shell (100) and are spaced along the second direction (Y), and the first insulating piece (300) and second insulating piece (400) are connected with the side of the cover plate (200) close to the shell (100);The first insulating piece (300) is provided with the first protruding (310) at one end close to the second insulating piece (400), and the second insulating piece (400) is provided with the second protruding (410) at one end close to the first insulating piece (300), and the first protruding (310) and the second protruding (410) are spaced along the first direction (X), and the first protruding (310) is at least partially overlapped with the second protruding (410) along the first direction (X) in the projection of the cover plate (200); The first protruding (310) is provided with the first guide surface (320) at one end close to the second protruding (410), and the second protruding (410) is provided with the second guide surface (420) at one end close to the first protruding (310). The first guide surface (320) is the first inclined plane (321), and the first inclined plane (321) is arranged at an angle with the plane where the cover plate (200) is projected along the first direction (X); The second guide surface (420) is the second inclined plane (421), and the second inclined plane (421) is arranged at an angle with the plane where the cover plate (200) is projected along the first direction (X), and the second inclined plane (421) is arranged in parallel with the first inclined plane (321).

2. The cell according to claim 1, wherein The first protruding (310) is arranged along the first direction (X) close to the cover plate (200), and the width of the first protruding (310) along the second direction (Y) increases from the side close to the cover plate (200) to the side away from the cover plate (200); The width of the second protruding (410) along the second direction (Y) decreases from the side close to the cover plate (200) to the side away from the first insulating piece (300).

3. The cell according to claim 2, wherein The first guide surface (320) is the first arc surface (322), the first protruding (310) is arranged along the first direction (X) close to the cover plate (200), and the first arc surface (322) protrudes towards the second insulating piece (400); The second guide surface (420) is the second arc surface (422), the second protruding (410) is away from the cover plate (200) along the first direction (X), and the second arc surface (422) protrudes towards the first insulating piece (300).

4. The cell according to claim 1, wherein ​ ​ 5. The cell according to claim 4, wherein The first protrusion (310) has a first top wall (311) and a first bottom wall (312) oppositely arranged along the first direction (X), and a width of the first top wall (311) along the second direction (Y) is less than a width of the first bottom wall (312) along the second direction (Y); The second protrusion (410) has a second top wall (411) and a second bottom wall (412) oppositely arranged along the first direction (X), and a width of the second top wall (411) along the second direction (Y) is greater than a width of the second bottom wall (412) along the second direction (Y).

6. The cell according to claim 1, wherein The number of the first protrusions (310) is multiple, and the multiple first protrusions (310) are arranged at intervals along the first direction (X), and the number of the second protrusions (410) is at least one, and the second protrusion (410) is located between adjacent first protrusions (310).

7. The cell according to claim 1, wherein The first insulating member (300) comprises a first support table (330) arranged close to the second insulating member (400), the second insulating member (400) comprises a second support table (430) arranged close to the first support table (330), the first support table (330) and the second support table (430) both extend in a direction away from the cover plate (200) along the first direction (X), the first support table (330) is provided with the first protrusion (310), and the second support table (430) is provided with the second protrusion (410); the single battery further comprises an electrode assembly (500), the electrode assembly (500) is arranged in the shell (100), and the electrode assembly (500) abuts against the first support table (330) along the first direction (X).

8. The cell according to claim 7, wherein The height of the first support table (330) along the first direction (X) is greater than the height of the second support table (430) along the first direction (X).

9. The cell according to claim 8, wherein The first insulating member (300) further comprises a third support table (340) away from the second insulating member (400), the third support table (340) protrudes towards a side away from the cover plate (200), the second insulating member (400) further comprises a fourth support table (440) away from the first insulating member (300), and the fourth support table (440) protrudes towards a side away from the cover plate (200); The electrode assembly (500) abuts against the third support table (340) and the fourth support table (440) along the first direction (X).

10. A battery pack, characterized by, The single battery comprises the single battery as claimed in any one of claims 1 to 9.

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