A battery and an electric device

Abstract

The application relates to a battery and a power utilization device. The battery comprises a battery body, a protection assembly, a fixed strip, a protection shell and a buffer elastic piece. The fixed strip is fixedly connected to the battery body. The protection shell has an inner cavity and a sliding groove in communication with the inner cavity. The fixed strip penetrates into the inner cavity of the protection shell through the sliding groove. The protection shell can move towards or away from the battery body along the fixed strip. The buffer elastic piece is arranged in the inner cavity of the protection shell and abuts against the fixed strip and the protection shell, and is used for providing an elastic force for making the protection shell have a movement tendency of moving away from the battery body. In this way, the protection shell moves towards the battery body along the fixed strip under the action of external impact or vibration, so as to compress the buffer elastic piece, make the buffer elastic piece absorb the external impact or vibration (namely, buffer the external impact or vibration), avoid the external impact or vibration from being transmitted to the battery body to damage the internal structure of the battery body, and greatly reduce the risk of safety accidents.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0002] Lithium-ion batteries, with their high energy density, long cycle life, and environmentally friendly characteristics, have demonstrated enormous application potential in portable electronic devices, electric vehicles, and energy storage systems. As the application areas of lithium-ion batteries continue to expand, higher demands are being placed on their safety and durability. How to effectively protect the internal structure of the battery from damage and prevent safety accidents when subjected to external impacts or vibrations is one of the key issues that urgently needs to be addressed in the current lithium-ion battery technology field. Utility Model Content

[0003] Therefore, it is necessary to provide a battery and electrical device that can prevent damage to the internal structure of the battery when it is subjected to external impact or vibration, thereby greatly reducing the risk of safety accidents.

[0004] To achieve the above objectives, firstly, the following technical solution is provided:

[0005] A battery comprising:

[0006] Battery body;

[0007] The protective assembly includes a fixing strip, a protective shell, and a buffer elastic element. The fixing strip is fixedly connected to the battery body. The protective shell has an inner cavity and a sliding groove communicating with the inner cavity. The fixing strip passes through the sliding groove into the inner cavity of the protective shell. The protective shell can move closer to or away from the battery body along the fixing strip.

[0008] The buffer elastic element is disposed within the inner cavity of the protective shell and abuts against the fixing strip and the protective shell, thereby providing an elastic force that causes the protective shell to have a tendency to move away from the battery body.

[0009] In some embodiments, the protective assembly further includes a motion plate located within the inner cavity of the protective shell and fixedly connected to the side of the fixing strip opposite to the battery body, with the cushioning elastic element abutting between the motion plate and the protective shell.

[0010] In some embodiments, the protective shell includes a top plate, a bottom plate, and two side plates. The top plate and the bottom plate are arranged opposite to each other, and the top plate is located on the side of the bottom plate away from the battery body. The two side plates are connected between the top plate and the bottom plate, so that the top plate, the bottom plate, and the two side plates together enclose the inner cavity.

[0011] The groove is formed on the base plate, and the buffer elastic element abuts between the moving plate and the top plate.

[0012] In some embodiments, the protective components include a plurality of protective components, which are spaced apart along a first direction on the same side of the battery body. The fixing strip and the protective shell of each protective component extend longitudinally along a second direction, which is perpendicular to the first direction.

[0013] In some embodiments, the battery further includes a plurality of mounting ears, each of which is fixedly connected to the battery body, and each mounting ear has an oblong hole.

[0014] In some embodiments, the surface of each of the mounting ears is provided with anti-slip texture.

[0015] In some embodiments, the battery body includes a housing and a battery cell, the fixing strip is fixedly connected to the outer side of the housing, and the battery cell is disposed inside the housing;

[0016] The housing has a closed end and an open end as opposite ends of the housing. The open end is used for the battery cell to enter or exit the housing. The closed end has a snap-fit ​​protrusion protruding towards the inside of the housing. The end of the battery cell facing the closed end has a snap-fit ​​groove. The snap-fit ​​protrusion snaps into the snap-fit ​​groove.

[0017] In some embodiments, the end of the battery cell facing the opening has a handle.

[0018] In some embodiments, the battery further includes a plurality of elastic strips disposed between the cell and the inner wall of the housing.

[0019] To achieve the above objectives, the second aspect provides the following technical solution:

[0020] An electrical device includes a battery as described in the first aspect above.

[0021] Compared with the prior art, this application has the following beneficial effects:

[0022] In the aforementioned battery and electrical device, if the battery is subjected to external impact or vibration, the protective shell of the protective component on the battery will withstand the external impact or vibration. Under the action of external impact or vibration, the protective shell moves along the fixed strip toward the battery body to compress the buffer elastic element, so that the buffer elastic element absorbs the external impact or vibration (i.e. buffers the external impact or vibration), preventing the external impact or vibration from being transmitted to the battery body and damaging the internal structure of the battery body, thus greatly reducing the risk of safety accidents. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the battery structure in one embodiment of this application;

[0024] Figure 2 for Figure 1 The diagram shows the structure of the battery from another perspective (some components are omitted);

[0025] Figure 3 for Figure 2 The image shown is a magnified view of the battery at point B.

[0026] Figure 4 for Figure 1 The diagram shows the structure of the battery from another perspective (the battery being removed from the casing);

[0027] Figure 5 for Figure 4 The image shows a magnified view of the battery at point A.

[0028] Figure label:

[0029] 10. Battery body; 11. Housing; 12. Cell; 121. Snap-fit ​​groove; 13. Handle; 14. Mounting ear; 141. Waist-shaped hole; 15. Elastic strip; 16. Snap-fit ​​protrusion; a1. Open end; a2. Closed end; 20. Protective component; 21. Fixing strip; 22. Protective shell; C. Inner cavity; 221. Top plate; 223. Bottom plate; 2231. Slide groove; 225. Side plate; 23. Buffer elastic element; 24. Moving plate; X1. First direction; X2. Second direction. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, 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., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] This application provides an electrical device. This electrical device utilizes a battery as its power source. Specifically, the electrical device can be a vehicle, mobile phone, portable device, laptop computer, ship, spacecraft, electric toy, and power tool, etc. Vehicles can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.; spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc.; electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of this application do not impose special limitations on the above-mentioned electrical device.

[0037] The specific structure of the battery is described below with reference to the accompanying drawings. Please refer to the attached diagram. Figures 1 to 5 The battery includes a battery body 10 and a protective assembly 20. The protective assembly 20 includes a fixing strip 21, a protective shell 22, and a cushioning elastic member 23. The fixing strip 21 is fixedly connected to the battery body 10. The protective shell 22 has an inner cavity C and a groove 2231 communicating with the inner cavity C. A portion of the fixing strip 21 passes through the groove 2231 on the protective shell 22 and enters the inner cavity C of the protective shell 22, allowing the protective shell 22 to move along the fixing strip 21 towards or away from the battery body 10. The cushioning elastic member 23 is disposed within the inner cavity C of the protective shell 22 and abuts against the fixing strip 21 and the protective shell 22, such that the cushioning elastic member 23 provides an elastic force that causes the protective shell 22 to move away from the battery body 10.

[0038] In actual use, if the battery is subjected to external impact or vibration, the protective shell 22 of the protective component 20 on the battery will withstand the external impact or vibration. Under the action of external impact or vibration, the protective shell 22 moves along the fixing strip 21 toward the battery body 10 to compress the buffer elastic member 23, so that the buffer elastic member 23 absorbs the external impact or vibration (i.e. buffers the external impact or vibration), and avoids the external impact or vibration from being transmitted to the battery body 10 and damaging the internal structure of the battery body 10, thus greatly reducing the risk of safety accidents.

[0039] In embodiments of this application, the protective assembly 20 further includes a moving plate 24. The moving plate 24 is located within the inner cavity C of the protective shell 22 and is fixedly connected to the side of the fixing strip 21 opposite to the battery body 10. A buffer elastic member 23 abuts against the moving plate 24 and the protective shell 22, allowing the buffer elastic member 23 to be compressed or extended more smoothly between the moving plate 24 and the protective shell 22, thus providing better cushioning and improving the protection of the battery body 10. Optionally, the buffer elastic member 23 can be a spring.

[0040] Specifically, in this embodiment, the protective shell 22 includes a top plate 221, a bottom plate 223, and two side plates 225. Figure 2 and Figure 3 (One of the side plates 225 is omitted). The top plate 221 and the bottom plate 223 are arranged opposite to each other, with the top plate 221 located on the side of the bottom plate 223 away from the battery body 10. Both side plates 225 are connected between the top plate 221 and the bottom plate 223, so that the top plate 221, the bottom plate 223, and the two side plates 225 together enclose the inner cavity C of the protective shell 22. The aforementioned groove 2231 is formed on the bottom plate 223, and the buffer elastic member 23 abuts between the moving plate 24 and the top plate 221, so that the buffer elastic member 23 can be compressed or extended more smoothly between the moving plate 24 and the top plate 221, which can better play a buffering role and thus improve the protection effect on the battery body 10.

[0041] Furthermore, since the fixing strip 21, the moving plate 24, and the protective shell 22 are all elongated, the top plate 221, bottom plate 223, and side plate 225 of the protective shell 22 are also elongated. There are multiple buffer elastic elements 23, which press against the moving plate 24 and the top plate 221, and are spaced apart along the length of the moving plate 24 and the top plate 221. This allows multiple buffer elastic elements 23 to work together to buffer external impacts or vibrations, thereby improving the protection of the battery body 10.

[0042] Furthermore, there are multiple protective components 20, which are spaced apart along the first direction X1 on the same side of the battery body 10. The fixing strip 21 and protective shell 22 of each protective component 20 extend longitudinally along a second direction X2 perpendicular to the first direction X1. Thus, by using multiple protective components 20 to protect the battery body 10, the protective effect is further improved, and the risk of safety accidents is reduced. Specifically... Figure 1 In the embodiment shown, there are two protective components 20, which are arranged on the same side of the battery body 10 and located at both ends of the battery body 10 in the first direction X1.

[0043] In the embodiments of this application, the battery body 10 includes a housing 11 and a battery cell 12 disposed within the housing 11. The aforementioned fixing strip 21 is fixedly connected to the outer side of the housing 11, that is, the protective component 20 is installed on the outer side of the housing 11, thereby using the protective component 20 to protect the housing 11 and the battery cell 12 inside the housing 11.

[0044] Furthermore, the housing 11 has a closed end a2 and an open end a1 as its two opposite ends. The open end a1 is used for the battery cell 12 to enter or exit the housing 11. The closed end a2 has a snap-fit ​​protrusion 16 protruding towards the inside of the housing 11, and the end of the battery cell 12 facing the closed end a2 has a snap-fit ​​groove 121. The snap-fit ​​protrusion 16 and the snap-fit ​​groove 121 can snap into each other, thereby detachably fixing the battery cell 12 inside the housing 11. The battery body 10 also includes a cover plate (not shown), which covers the open end a1 of the housing 11, thereby enclosing the battery cell 12 inside the housing 11.

[0045] Thus, during assembly, the battery cell 12 is inserted into the housing 11 through the open end a1, so that the snap-fit ​​groove 121 on the battery cell 12 is snapped and fixed with the snap-fit ​​protrusion 16 inside the housing 11; then the cover plate is placed on the open end a1 of the housing 11, thereby sealing the battery cell 12 inside the housing 11.

[0046] Furthermore, the surface of the snap-fit ​​protrusion 16 is provided with an insulating coating, which is used to form an insulation between the housing 11 and the battery cell 12 to prevent the battery cell 12 from being directly electrically connected to the housing 11.

[0047] Furthermore, the battery cell 12 has a handle 13 on the side facing the opening end a1 of the housing 11. During assembly or disassembly, the operator can insert the battery cell 12 into the housing 11 through the handle 13, or pull the battery cell 12 out of the housing 11 through the handle 13, facilitating assembly and disassembly. Optionally, the surface of the handle 13 is provided with anti-slip texture to prevent slippage.

[0048] In a specific embodiment, the battery further includes multiple elastic strips 15 disposed between the cell 12 and the inner wall of the casing 11. These elastic strips 15 support and position the cell 12 within the casing 11, preventing direct collision or scratching between the cell 12 and the casing 11 when subjected to external impact or vibration. This provides protection for the cell 12 and further reduces the risk of safety accidents. Optionally, the elastic strips 15 can be made of rubber.

[0049] Furthermore, each elastic strip 15 has anti-slip texture on the side facing the battery cell 12. This anti-slip texture can prevent the battery cell 12 from sliding relative to the elastic strip 15, further avoiding collision between the battery cell 12 and the casing 11, and further reducing the risk of safety accidents.

[0050] To improve the output voltage, in some embodiments, multiple batteries are stacked to form a battery module. In the battery module, the battery bodies 10 of each battery are electrically connected in series and / or parallel. It should be noted that for each battery in the battery module, each battery may include a protective component 20; alternatively, some batteries may include the protective component 20, while others may not. For example, the batteries in the battery module are stacked along one direction, with the batteries at both ends of the stacking direction including the protective component 20, while the remaining batteries may not, which helps to reduce the size of the battery module.

[0051] In the embodiments of this application, the battery further includes multiple mounting ears 14, each of which is fixedly connected to the housing 11 of the battery body 10. Each mounting ear 14 has a slotted hole 141. Thus, when installing the battery onto the mounting platform, the battery is first placed on the mounting platform, and then each bolt is passed through the slotted hole 141 of each mounting ear 14 and threaded into the threaded hole on the mounting platform. The support locks and fixes each mounting ear 14 to the mounting platform, thereby fixing the battery to the mounting platform. Furthermore, the surface of each mounting ear 14 is provided with anti-slip texture to prevent the battery from sliding on the mounting platform or even falling off the mounting platform during installation.

[0052] It should be noted that the number and position of the mounting ears 14 can be set according to the specific situation, and no special restrictions are made here.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent 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 all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery, characterized in that, include: Battery body (10); The protective assembly (20) includes a fixing strip (21), a protective shell (22), and a buffer elastic element (23). The fixing strip (21) is fixedly connected to the battery body (10). The protective shell (22) has an inner cavity (C) and a sliding groove (2231) communicating with the inner cavity (C). The fixing strip (21) passes through the sliding groove (2231) into the inner cavity (C) of the protective shell (22). The protective shell (22) can move closer to or away from the battery body (10) along the fixing strip (21). The buffer elastic element (23) is disposed in the inner cavity (C) of the protective shell (22) and abuts against the fixing strip (21) and the protective shell (22) to provide elastic force that causes the protective shell (22) to have a tendency to move away from the battery body (10).

2. The battery according to claim 1, characterized in that, The protective assembly (20) also includes a moving plate (24), which is located in the inner cavity (C) of the protective shell (22) and is fixedly connected to the side of the fixing strip (21) away from the battery body (10). The buffer elastic element (23) abuts between the moving plate (24) and the protective shell (22).

3. The battery according to claim 2, characterized in that, The protective shell (22) includes a top plate (221), a bottom plate (223), and two side plates (225). The top plate (221) and the bottom plate (223) are arranged opposite to each other, and the top plate (221) is located on the side of the bottom plate (223) away from the battery body (10). The two side plates (225) are connected between the top plate (221) and the bottom plate (223) so that the top plate (221), the bottom plate (223), and the two side plates (225) together enclose the inner cavity (C). The groove (2231) is formed on the base plate (223), and the buffer elastic element (23) abuts between the moving plate (24) and the top plate (221).

4. The battery according to claim 1, characterized in that, The protective components (20) include a plurality of them, and the plurality of protective components (20) are spaced apart along a first direction (X1) on the same side of the battery body (10). The fixing strip (21) and the protective shell (22) of each protective component (20) extend longitudinally along a second direction (X2), which is perpendicular to the first direction (X1).

5. The battery according to claim 1, characterized in that, The battery also includes a plurality of mounting ears (14), each of which is fixedly connected to the battery body (10), and each mounting ear (14) is provided with a waist-shaped hole (141).

6. The battery according to claim 5, characterized in that, Each of the mounting ears (14) has anti-slip textures on its surface.

7. The battery according to claim 1, characterized in that, The battery body (10) includes a housing (11) and a battery cell (12). The fixing strip (21) is fixedly connected to the outer side of the housing (11), and the battery cell (12) is disposed inside the housing (11). The housing (11) has a closed end (a2) and an open end (a1) as opposite ends of the housing (11). The open end (a1) is used for the battery cell (12) to enter or exit the housing (11). The closed end (a2) has a snap-fit ​​protrusion (16) protruding towards the inside of the housing (11). The end of the battery cell (12) facing the closed end (a2) has a snap-fit ​​groove (121). The snap-fit ​​protrusion (16) snaps into the snap-fit ​​groove (121).

8. The battery according to claim 7, characterized in that, The end of the battery cell (12) facing the opening end (a1) has a handle (13).

9. The battery according to claim 7, characterized in that, The battery also includes a plurality of elastic strips (15) disposed between the cell (12) and the inner wall of the housing (11).

10. An electrical device, characterized in that, Includes the battery as described in any one of claims 1 to 9.

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