Battery and electric equipment

Abstract

The utility model discloses a battery and electric equipment, and relates to the technical field of batteries. The battery comprises a bottom supporting plate and an insulating film; the bottom supporting plate is used for bearing a battery cell; the bottom supporting plate is provided with a first clamping structure; the insulating film is used for coating the battery cell; the insulating film is at least partially positioned above the bottom supporting plate, and an accommodating space for accommodating the battery cell is defined between the insulating film and the bottom supporting plate; at least one end of the insulating film is provided with a second clamping structure, and the second clamping structure is clamped with the first clamping structure. At least one end of the insulating film is provided with a second clamping structure, the insulating film can be clamped with the first clamping structure on the bottom supporting plate through the second clamping structure, and the insulating film can be connected with the bottom supporting plate through the first clamping structure and the second clamping structure, so that the loosening degree of the insulating film after the battery cell expands is reduced; the insulating film can stably coat the battery, so that the effect of inhibiting the expansion of the battery cell by the insulating film is ensured, and the performance of the battery is ensured.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a battery and electrical equipment. Background Art

[0002] With the rapid development of new energy electric vehicles, people have put forward higher requirements for the performance of new energy vehicles. Lithium-ion batteries, the core energy storage components of new energy vehicles, are one of the energy storage devices with high energy density and the ability to output energy continuously and stably. At the same time, they have the advantages of excellent cycle characteristics, rate characteristics and fast charge and discharge rates. The development of lithium-ion battery technology and the improvement of its performance have become particularly important.

[0003] A battery usually consists of a top cover, a battery cell and a shell. During the production process of the battery, the battery cell needs to be placed in the shell and then the shell is sealed with the top cover. Before the battery cell is placed in the shell, it is usually necessary to use an insulating film to cover the battery cell and use blue glue to fix both ends of the insulating film. The insulating film can suppress the expansion of the battery cell. However, during the long-term use of the battery, the viscosity of the blue glue decreases due to long-term immersion in the electrolyte. After the battery cell expands, the blue glue is easy to fall off the insulating film, causing the insulating film to loosen, reducing the effect of the insulating film in suppressing the expansion of the battery cell and affecting the battery performance. Utility Model Content

[0004] To this end, the utility model provides a battery and electrical equipment, which solves the technical problem that the blue glue is easily detached from the insulating film after the battery cell expands, causing the insulating film to loosen and reducing the effect of the insulating film in suppressing the expansion of the battery cell.

[0005] To achieve the above-mentioned purpose, the utility model specifically provides the following technical solutions: a battery, comprising: a bottom support plate, used to carry a battery cell; the bottom support plate is provided with a first clamping structure; an insulating film, used to cover the battery cell; the insulating film is at least partially located above the bottom support plate, and a storage space for accommodating the battery cell is defined between the insulating film and the bottom support plate; at least one end of the insulating film is provided with a second clamping structure, and the second clamping structure is clamped with the first clamping structure.

[0006] Optionally, the first clamping structure is a clamping hole, and the second clamping structure is a buckle, and the buckle is clamped into the clamping hole.

[0007] Optionally, the buckle includes a rod body and a protruding structure; one end of the rod body is connected to the insulating film, the protruding structure is arranged at the side end of the rod body, the rod body is passed through the clip hole, and the protruding structure abuts against the end surface of the bottom support plate.

[0008] Optionally, the length of the rod body is Y1, the width of the bottom support plate is X, Y1=X-0.5, and / or the width of the rod body is smaller than the width of the clamping hole.

[0009] Optionally, there are multiple protrusion structures; the multiple protrusion structures are respectively arranged on both sides of the rod body in the first direction, and the width of the buckle in the first direction is greater than the width of the card hole in the first direction, and / or the multiple protrusion structures are respectively arranged on both sides of the rod body in the second direction, and the width of the buckle in the second direction is greater than the width of the card hole in the second direction; the first direction and the second direction are arranged perpendicular to each other.

[0010] Optionally, a shell is further included; the shell is provided with a containing cavity, the bottom support plate is arranged in the containing cavity, and a solution space for containing electrolyte is defined between the bottom support plate and the bottom wall of the containing cavity.

[0011] Optionally, the buckle is provided with a capillary channel, and two ends of the capillary channel are respectively connected to the solution space and the containing space.

[0012] Optionally, the insulating film is made of polypropylene or polyimide.

[0013] Optionally, there are multiple first clip structures; the multiple first clip structures are arranged along the second direction to form M rows, and / or, the multiple first clip structures are arranged along the first direction to form N columns; the first direction and the second direction are arranged perpendicular to each other.

[0014] In addition, an electrical device is provided, comprising the above-mentioned battery.

[0015] Compared with the prior art, the utility model has the following beneficial effects: in an embodiment of the utility model, the battery cell can be placed on the bottom tray, the battery cell can be supported by the bottom tray, the insulating film is at least partially located above the bottom tray, the battery cell on the bottom tray is located in the accommodating space, the battery cell on the bottom tray can be covered by the insulating film to limit the position of the battery cell on the bottom tray; and at least one end of the insulating film is provided with a second clamping structure, the insulating film can be mutually clamped with the first clamping structure on the bottom tray through the second clamping structure, the insulating film can be connected to the bottom tray through the first clamping structure and the second clamping structure, the loosening degree of the insulating film after the battery cell expands is reduced, and the insulating film can stably cover the battery to ensure the effect of the insulating film in suppressing the expansion of the battery cell and the performance of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A cross-sectional view of a battery provided by an embodiment of the utility model;

[0018] Figure 2 A schematic structural diagram of a bottom support plate of a battery provided in an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of an insulating film of a battery provided by an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a buckle of a first embodiment of a battery provided by an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of the structure of a buckle of a second embodiment of a battery provided by an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the structure of a buckle of a third embodiment of a battery provided by an embodiment of the utility model;

[0023] Figure 7 A schematic structural diagram of a buckle of a fourth embodiment of a battery provided by an embodiment of the utility model;

[0024] Figure 8 A schematic structural diagram of a buckle of a fifth embodiment of a battery provided by an embodiment of the utility model;

[0025] Fig. 9 A schematic structural diagram of a buckle of a sixth embodiment of a battery provided in an embodiment of the utility model.

[0026] Reference numerals:

[0027] The battery cell 10 ; the bottom support plate 100 ; the top surface 101 ; the clamping hole 110 ; the insulating film 200 ; the buckle 210 ; the rod body 211 ; the protruding structure 212 ; the housing 300 ; and the solution space 301 . DETAILED DESCRIPTION

[0028] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] Reference below Figures 1 to 9 A battery and an electrical device according to an embodiment of the utility model are described.

[0032] According to the battery of the embodiment of the first aspect of the utility model, the battery includes a bottom support plate 100 and an insulating film 200; the bottom support plate 100 is used to carry the battery cell 10; the bottom support plate 100 is provided with a first clamping structure; the insulating film 200 is used to cover the battery cell 10; the insulating film 200 is at least partially located above the bottom support plate 100, and a accommodating space for accommodating the battery cell 10 is defined between the insulating film 200 and the bottom support plate 100; at least one end of the insulating film 200 is provided with a second clamping structure, and the second clamping structure is clamped with the first clamping structure.

[0033] In an embodiment of the utility model, the battery cell 10 can be placed on the bottom tray 100, and the battery cell 10 can be supported by the bottom tray 100. The insulating film 200 is at least partially located above the bottom tray 100, and the battery cell 10 on the bottom tray 100 is located in the accommodating space. The battery cell 10 on the bottom tray 100 can be covered by the insulating film 200 to limit the position of the battery cell 10 on the bottom tray 100; and at least one end of the insulating film 200 is provided with a second clamping structure, and the insulating film 200 can be mutually clamped with the first clamping structure on the bottom tray 100 through the second clamping structure, and the insulating film 200 can be connected to the bottom tray 100 through the first clamping structure and the second clamping structure, thereby reducing the degree of loosening of the insulating film 200 after the battery cell 10 expands, so that the insulating film 200 can stably cover the battery to ensure the effect of the insulating film 200 in suppressing the expansion of the battery cell 10 and ensuring the performance of the battery.

[0034] Specifically, a plurality of second clamping structures may be provided and respectively connected to both ends of the insulating film 200 , and the plurality of second clamping structures are respectively connected to the plurality of first clamping structures of the bottom support plate 100 to improve the stability of the connection.

[0035] Reference Figures 1 to 3 It can be understood that the first clamping structure is the clamping hole 110, and the second clamping structure is the buckle 210. The buckle 210 is inserted into the clamping hole 110 to achieve the effect of mutual clamping of the first clamping structure and the second clamping structure.

[0036] Specifically, the bottom support plate 100 and / or the buckle 210 have elastic deformation capability, and the buckle 210 is inserted into the locking hole 110 in an interference fit, so that the stability of the mutual locking of the buckle 210 and the locking hole 110 is higher.

[0037] According to specific actual conditions, in other embodiments of the present invention, the second clamping structure is a clamping hole 110 , and the first clamping structure is a buckle 210 , and the buckle 210 is clamped into the clamping hole 110 .

[0038] Reference Figure 1 , Figures 4 to 9 It can be understood that the buckle 210 includes a rod body 211 and a protruding structure 212; one end of the rod body 211 is connected to the insulating film 200, the protruding structure 212 is arranged at the side end of the rod body 211, the rod body 211 is passed through the card hole 110, and the protruding structure 212 abuts against the end surface of the bottom support plate 100 to increase the difficulty of pulling the buckle 210 out of the card hole 110, so that the buckle 210 can be stuck in the card hole 110 through the protruding structure 212.

[0039] In some embodiments of the utility model, the battery cell 10 is located above the bottom support plate 100, and the insulating film 200 covers the battery cell 10. One end of the insulating film 200 having a second clamping structure can be arranged below the bottom support plate 100. The second clamping structure is a buckle 210. The rod body 211 of the buckle 210 is passed through the clamping hole 110 from the bottom of the bottom support plate 100. The protruding structure 212 abuts against the top end surface 101 of the bottom support plate 100 to limit the position of the rod body 211, so that the buckle 210 and the clamping hole 110 are clamped with each other to prevent the rod body 211 from moving downward so that the buckle 210 falls off from the clamping hole 110. By setting the protruding structure 212, the stability of the buckle 210 in the clamping hole 110 can be improved.

[0040] According to specific actual conditions, in other embodiments of the present invention, the insulating film 200 is provided with one end of the second clip structure which can be arranged above the bottom support plate 100, and the second clip structure is a clip 210, and the rod body 211 of the clip 210 is passed through the clip hole 110 from the top of the bottom support plate 100, and the protruding structure 212 abuts against the bottom end surface of the bottom support plate 100 to limit the position of the rod body 211, so that the clip 210 and the clip hole 110 are clipped with each other to prevent the rod body 211 from moving upward so that the clip 210 falls off from the clip hole 110.

[0041] Specifically, refer to Figures 4 to 9 It can be understood that the shape of the protruding structure 212 can be an oblique rod, a triangle, an arc and / or an L-shape. Of course, the protruding structure 212 can also be other shapes to adapt to the card hole 110 and the bottom support plate 100.

[0042] It is understandable that in order to prevent the rod body 211 from exceeding the bottom support plate 100 and avoid affecting the performance of the battery in the accommodating space, the length of the rod body 211 is Y1, the width of the bottom support plate 100 is X, Y1=X-0.5, and / or the width of the rod body 211 is smaller than the width of the card hole 110, so that the rod body 211 can pass through the card hole 110, and the position of the buckle 210 is limited by the protruding structure 212.

[0043] Specifically, the maximum width of the rod body 211 is smaller than the minimum radial width of the locking hole 110 , so that the rod body 211 can be smoothly inserted into the locking hole 110 , and the buckle 210 can be confined at the locking hole 110 by the protruding structure 212 .

[0044] Reference Figures 1 to 3 It can be understood that there are multiple protrusion structures 212; the multiple protrusion structures 212 are respectively arranged on both sides of the rod body 211 in the first direction, and the width of the buckle 210 in the first direction is greater than the width of the card hole 110 in the first direction, and / or, the multiple protrusion structures 212 are respectively arranged on both sides of the rod body 211 in the second direction, and the width of the buckle 210 in the second direction is greater than the width of the card hole 110 in the second direction; the first direction and the second direction are arranged perpendicular to each other.

[0045] By providing a plurality of protrusion structures 212, the stability of the buckle 210 being stuck on the hole 110 can be improved; the buckle 210 is composed of a rod body 211 and a protrusion structure 212, and the plurality of protrusion structures 212 are respectively arranged on both sides of the rod body 211 in the first direction, so that the width of the buckle 210 in the first direction is greater than the width of the hole 110 in the first direction, so that after the buckle 210 is inserted into the hole 110, the buckle 210 and the hole 110 can be mutually engaged, thereby avoiding the possibility of the buckle 210 falling off from the hole 110.

[0046] The multiple protrusion structures 212 can also be respectively arranged on both sides of the rod body 211 in the second direction, so that the width of the buckle 210 in the second direction is greater than the width of the hole 110 in the second direction, so that after the buckle 210 is inserted into the hole 110, the buckle 210 and the hole 110 can be mutually engaged to avoid the possibility of the buckle 210 falling off from the hole 110.

[0047] Specifically, the first direction is arranged in the same direction as the length direction of the bottom supporting plate 100 , and the second direction is arranged in the same direction as the width direction of the bottom supporting plate 100 .

[0048] Reference Figure 1 It can be understood that it also includes a shell 300; the shell 300 is provided with a containing cavity, the bottom support plate 100 is arranged in the containing cavity, and a solution space 301 for containing electrolyte is defined between the bottom support plate 100 and the bottom wall of the containing cavity.

[0049] The battery cell 10 can be placed in the accommodating cavity. The shell 300 is provided to protect the battery cell 10 in the accommodating cavity. The bottom end surface of the bottom support plate 100 is spaced apart from the bottom wall of the accommodating cavity so that a solution space 301 is defined between the bottom support plate 100 and the bottom wall of the accommodating cavity, and the electrolyte can be poured into the solution space 301. During the recycling process of the battery cell 10, the electrode of the battery cell 10 continuously consumes the electrolyte. When the electrolyte in the electrode is insufficient, the electrode is prone to lithium precipitation and burrs are generated. The burrs are prone to pierce the diaphragm and cause the risk of failure of the battery cell 10, thereby reducing the safety performance of the battery. By providing the solution space 301, more electrolyte can be accommodated in the battery. The electrolyte can penetrate into the battery cell 10 through the card hole 110 to provide electrolyte for the battery cell 10 in the battery, thereby improving the battery life and safety performance.

[0050] It can be understood that the buckle 210 is provided with a capillary channel, and both ends of the capillary channel are connected to the solution space 301 and the containing space respectively.

[0051] By setting a capillary channel on the buckle 210, the electrolyte in the solution space 301 can be transferred from the solution space 301 to the accommodation space through the capillary channel, so as to better provide electrolyte to the battery cell 10 in the accommodation space, thereby improving the battery life and safety performance; wherein, the card hole 110 is set to be through-through from top to bottom, and the two ends of the capillary channel are respectively connected to the solution space 301 and the accommodation space.

[0052] It is understandable that the material of the insulating film 200 is polypropylene or polyimide.

[0053] The insulating film 200 can be made of polypropylene or polyimide; the insulating film 200 can be integrally formed, or the second clip structure can be attached to the main body of the insulating film 200 covering the battery cell 10 by bonding or other methods. At this time, the material of the second clip structure and the main body of the insulating film 200 can be polypropylene or polyimide at the same time, or one can be polypropylene and the other can be polyimide, such as the material of the main body is polypropylene and the material of the second clip structure is polyimide, or the material of the main body is polyimide and the material of the second clip structure is polypropylene; in order to ensure the clipping strength of the first clip structure and the second clip structure, the material of the second clip structure is preferably polyimide.

[0054] It is understandable that there are multiple first snap-fit ​​structures; the multiple first snap-fit ​​structures are arranged along the second direction to form M rows, and / or, the multiple first snap-fit ​​structures are arranged along the first direction to form N columns; the first direction and the second direction are arranged perpendicular to each other.

[0055] There are multiple first clamping structures, which are arranged along the second direction to form M rows. The second clamping structure can be mutually clamped with any row of first clamping structures in the bottom support plate 100, thereby improving the adaptability of the insulating film 200 connected to the first clamping structure of the bottom support plate 100 through the second clamping structure; specifically, the end of the insulating film 200 provided with the second clamping structure can be moved to any position of the bottom support plate 100 according to specific needs, and then the battery cell 10 can be stably covered by being mutually clamped with the first clamping structure, so as to ensure the effect of the insulating film 200 in suppressing the expansion of the battery cell 10 and ensure the performance of the battery.

[0056] According to the actual situation, multiple second snap-in structures can be provided, and multiple first snap-in structures are arranged along the first direction to form N columns. Multiple second snap-in structures can be snap-connected one by one with the first snap-in structures in each column to improve the stability of the connection.

[0057] Specifically, refer to Figure 2 The bottom support plate 100 is formed with M rows of card holes 110 arranged along the second direction and N columns of card holes 110 arranged along the first direction. In order to adapt to the battery cells 10 of different thicknesses, the multiple buckles 210 on the insulating film 200 can be snapped one by one with the card holes 110 in different rows on the bottom support plate 100. For example, when the thickness of the battery cell 10 is small, the buckles 210 on the end of the insulating film 200 can be connected with the front row of card holes 110 in the M rows of card holes 110. When the thickness of the battery cell 10 is large, the buckles 210 on the end of the insulating film 200 can be connected with the rear row of card holes 110 in the M rows of card holes 110. In order to ensure the stability of the connection between the insulating film 200 and the bottom support plate 100, the multiple buckles 210 can be snapped one by one with the card holes 110 in the same row of N columns at the same time.

[0058] Specifically, the first direction is arranged in the same direction as the length direction of the bottom supporting plate 100 , and the second direction is arranged in the same direction as the width direction of the bottom supporting plate 100 .

[0059] Reference Figures 1 to 9 According to the electric device of the second embodiment of the utility model, the electric device includes the battery of the first embodiment. The electric device has all the beneficial effects of the battery, which will not be described in detail here.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A battery, characterized in that include: A bottom support plate (100) is used to carry the battery cell (10); the bottom support plate (100) is provided with a first clamping structure; An insulating film (200) is used to cover the battery cell (10); the insulating film (200) is at least partially located above the bottom support plate (100), and defines an accommodation space for accommodating the battery cell (10) between the insulating film (200) and the bottom support plate (100); at least one end of the insulating film (200) is provided with a second clamping structure, and the second clamping structure is clamped with the first clamping structure.

2. The battery according to claim 1, characterized in that The first clamping structure is a clamping hole (110), and the second clamping structure is a buckle (210), and the buckle (210) is clamped into the clamping hole (110).

3. The battery according to claim 2, characterized in that The buckle (210) comprises a rod body (211) and a protruding structure (212); one end of the rod body (211) is connected to the insulating film (200), the protruding structure (212) is arranged at the side end of the rod body (211), the rod body (211) is passed through the clamping hole (110), and the protruding structure (212) abuts against the end surface of the bottom support plate (100).

4. The battery according to claim 3, characterized in that The length of the rod body (211) is Y1, the width of the bottom support plate (100) is X, Y1=X-0.5, and / or the width of the rod body (211) is smaller than the width of the clamping hole (110).

5. The battery according to claim 3, characterized in that A plurality of the protruding structures (212) are provided; the plurality of the protruding structures (212) are respectively provided on both sides of the rod body (211) in a first direction, the width of the buckle (210) in the first direction is greater than the width of the clamping hole (110) in the first direction, and / or the plurality of the protruding structures (212) are respectively provided on both sides of the rod body (211) in a second direction, the width of the buckle (210) in the second direction is greater than the width of the clamping hole (110) in the second direction; the first direction and the second direction are provided perpendicular to each other.

6. The battery according to claim 2, characterized in that It also includes a shell (300); the shell (300) is provided with a containing cavity, the bottom support plate (100) is arranged in the containing cavity, and a solution space (301) for containing electrolyte is defined between the bottom support plate (100) and the bottom wall of the containing cavity.

7. The battery according to claim 6, characterized in that The buckle (210) is provided with a capillary channel, and two ends of the capillary channel are respectively connected to the solution space (301) and the containing space.

8. The battery according to claim 1, characterized in that The insulating film (200) is made of polypropylene or polyimide.

9. The battery according to claim 1, characterized in that There are multiple first clamping structures; the multiple first clamping structures are arranged along the second direction to form M rows, and / or, the multiple first clamping structures are arranged along the first direction to form N columns; the first direction and the second direction are arranged perpendicular to each other.

10. Electrical equipment, characterized in that: include: The battery according to any one of claims 1 to 9.

Images