Battery packs and electronic devices

Abstract

The utility model belongs to the field of battery structure, and specifically relates to a battery pack and an electronic device. The battery pack includes a shell, a shock-absorbing bracket, a plurality of battery cells and a battery management unit. A hollow cavity is provided inside the shell, the shock-absorbing bracket is provided in the hollow cavity, and a plurality of battery cells are provided in the hollow cavity and connected to the shock-absorbing bracket. According to the battery pack of this embodiment, the shock-absorbing bracket of the battery pack is located in the hollow cavity of the shell and connected to the inner wall of the shell, and a buffer structure is provided on the shock-absorbing bracket, specifically a buffer channel. The buffer channel can absorb and disperse external impact force, and by reducing the force directly acting on the battery cell, the risk of damage to the battery cell due to impact is reduced. The utility model effectively solves the problem that the battery cell is easily damaged when subjected to external impact. It not only enhances the physical protection capability of the battery pack, but is also suitable for various use environments that may face external impacts.

Description

Technical Field

[0001] The utility model belongs to the field of battery structure, and specifically relates to a battery pack and electronic equipment. Background Art

[0002] At present, with the popularization of electronic devices and the acceleration of electrification trends, battery packs are widely used in various mobile devices, electric vehicles, drones and other fields as important energy storage devices. However, existing battery pack designs usually adopt a rigid contact structure, that is, the connection between the battery cells in the battery pack and the shell lacks elasticity. This rigid contact structure is prone to impact and extrusion inside the battery cell under extreme environments such as drop and roller tests, resulting in serious consequences such as deformation of the battery cell, short circuit and even fire. Utility Model Content

[0003] The purpose of the utility model is to at least solve the problem that the battery pack is easily damaged after being subjected to external force. This purpose is achieved through the following technical solutions:

[0004] The first aspect of the utility model provides a battery pack, comprising:

[0005] A shell, wherein a hollow cavity is provided inside the shell;

[0006] A shock-absorbing bracket, wherein the shock-absorbing bracket is arranged in the hollow cavity, and a buffer structure is arranged on the shock-absorbing bracket, and the buffer structure at least includes a buffer channel arranged on the shock-absorbing bracket;

[0007] A plurality of battery cells are arranged in the hollow cavity and connected to the shock absorbing bracket.

[0008] According to the battery pack of the utility model, the shock-absorbing bracket of the battery pack is located in the hollow cavity of the shell and connected to the inner wall of the shell. A buffer structure is arranged on the shock-absorbing bracket, and the buffer structure at least includes a buffer channel arranged on the shock-absorbing bracket. The buffer channel can absorb and disperse external impact force, and reduce the risk of damage to the battery cell due to impact by reducing the force directly acting on the battery cell. At the same time, a hollow cavity is provided inside the shell, which not only provides space for the arrangement of the shock-absorbing bracket and the battery cell, but also facilitates the dispersion and absorption of impact force. The presence of the hollow cavity forms a buffer area inside the battery pack, further enhancing the battery pack's resistance to external impact. The utility model effectively solves the problem that the battery cell is easily damaged when subjected to external impact. It not only enhances the physical protection capability of the battery pack, but also helps to improve the overall stability and safety of the battery pack, and is suitable for various use environments that may face external impacts.

[0009] In addition, the battery pack according to the utility model may also have the following additional technical features:

[0010] In some embodiments of the present invention, the buffer channel includes at least one of a through hole and a through groove.

[0011] In some embodiments of the present invention, the buffer channel includes the through hole, and the cross-section of the through hole is rhombus, semicircle or triangle.

[0012] In some embodiments of the present invention, the buffer channel includes the through grooves, and the through grooves are arranged at intervals on the outer edge of the shock-absorbing bracket.

[0013] In some embodiments of the present invention, the cross section of the through slot is in the shape of an elongated strip.

[0014] In some embodiments of the present invention, the shock-absorbing bracket is detachably connected to the inner wall of the shell.

[0015] In some embodiments of the present invention, the buffer structure further includes a buffer pad, and the buffer pad is sandwiched between the shock-absorbing bracket and the inner wall surface of the shell.

[0016] In some embodiments of the present invention, the shock-absorbing bracket includes a first bracket and a second bracket that are detachably connected, the first bracket is connected to one end of the battery cell, and the second bracket is connected to the other end of the battery cell.

[0017] In some embodiments of the present invention, the shock-absorbing bracket is a plastic shock-absorbing bracket.

[0018] A second aspect of the present invention provides an electronic device, comprising the above-mentioned battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0020] Figure 1 The structure diagram of the battery pack according to the embodiment of the utility model is schematically shown;

[0021] Figure 2 The exploded structure diagram of the battery pack according to the embodiment of the utility model is schematically shown;

[0022] Figure 3 The schematic diagram shows the structure of the hidden shell of the battery pack according to the embodiment of the utility model;

[0023] Figure 4The figure schematically shows a front view of a battery pack according to an embodiment of the present utility model when the housing is hidden;

[0024] Figure 5 The structure diagram of the battery pack according to the embodiment of the utility model when the first shell body is hidden is schematically shown;

[0025] Figure 6 The structure diagram of the battery pack according to the embodiment of the utility model when the second shell body is hidden is schematically shown;

[0026] Figure 7 The structure diagram of the shock-absorbing bracket according to the embodiment of the utility model is schematically shown;

[0027] Figure 8 The figure schematically shows a front view of a shock-absorbing bracket according to an embodiment of the utility model.

[0028] The reference numerals are as follows:

[0029] 100, battery pack; 10, shell; 11, first shell body; 12, second shell body; 20, shock-absorbing bracket; 21, first bracket; 211, through groove; 212, triangular through hole; 213, semicircular through hole; 214, diamond through hole; 22, second bracket; 30, battery cell; 40, battery management unit; 41, circuit board; 42, conductive sheet; 50, buckle body; 51, buckle button. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0031] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0032] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0033] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both above and below orientations.

[0034] like Figures 1 to 8 As shown, according to an embodiment of the utility model, a battery pack 100 is proposed, which includes a shell 10, a shock-absorbing bracket 20 and a plurality of battery cells 30. A hollow cavity is provided inside the shell 10, the shock-absorbing bracket 20 is arranged in the hollow cavity and connected to the inner wall of the shell 10, and a buffer structure is provided on the shock-absorbing bracket 20, which at least includes a buffer channel arranged on the shock-absorbing bracket 20, and a plurality of battery cells 30 are arranged in the hollow cavity and connected to the shock-absorbing bracket 20.

[0035] It is understandable that the battery pack further includes a battery management unit 40 , and the battery management unit 40 is electrically connected to each battery cell 30 .

[0036] According to the battery pack 100 of this embodiment, the shock-absorbing bracket 20 of the battery pack 100 is located in the hollow cavity of the shell 10 and connected to the inner wall of the shell 10. A buffer structure is provided on the shock-absorbing bracket 20, and the buffer structure at least includes a buffer channel provided on the shock-absorbing bracket. The buffer channel can absorb and disperse external impact force, and reduce the risk of damage to the battery cell 30 due to impact by reducing the force directly acting on the battery cell 30. At the same time, a hollow cavity is provided inside the shell 10, which not only provides space for the arrangement of the shock-absorbing bracket 20 and the battery cell 30, but also facilitates the dispersion and absorption of impact force. The presence of the hollow cavity forms a buffer area inside the battery pack 100, further enhancing the resistance of the battery pack 100 to external impact. The battery pack 100 contains a plurality of battery cells 30, which are connected to the shock-absorbing bracket 20 and are electrically connected through the battery management unit 40. Such a design not only provides better physical protection for the battery cell 30, but also facilitates the battery management unit 40 to monitor and manage the status of each battery cell 30, thereby ensuring the stability and safety of the battery pack 100. The utility model effectively solves the problem that the battery cell 30 is easily damaged when subjected to external impact. It not only enhances the physical protection capability of the battery pack 100, but also helps to improve the overall stability and safety of the battery pack 100, and is suitable for various use environments that may face external impact.

[0037] Specifically, the battery cells 30 are cylindrical and fixed on the shock-absorbing bracket 20 according to an optimized layout to minimize space waste and improve energy density. At the same time, appropriate gaps are left between the battery cells 30 to facilitate heat dissipation and reduce the impact of impact on adjacent battery cells 30.

[0038] It is understandable that if Figure 7 and Figure 8As shown, in order to match the cylindrical multiple battery cells 30, the shock-absorbing bracket 20 provides a slot for each battery cell 30, and these slots are customized according to the size of the battery cell 30 to fit the cylindrical battery cell 30 tightly. The design of the battery cell 30 slot fixes and protects the battery cell 30 to prevent the battery cell 30 from moving or colliding under the action of external forces. In addition, the shock-absorbing bracket 20 also includes a crossbeam and a longitudinal beam, wherein the crossbeam connects the battery cell 30 slots adjacent to each other in the horizontal direction, thereby enhancing the structural stability of the entire bracket. Such a design also helps to disperse the force on the battery pack 100 and reduce the direct impact on a single battery cell 30. At the four corners of the battery cell 30 slot, there are vertical longitudinal beams, which connect the battery cell 30 slots of different layers in the vertical direction, increase the stability in the vertical direction, and may provide more buffers to absorb impact forces. The shock-absorbing bracket 20 is designed as a multi-layer structure, each layer of which is used to place the battery cell 30. This multi-layer structure can not only carry more battery cells 30, but also form a buffer between different layers to resist impacts from multiple directions. In the connection structure, buffer channels are provided, which are hollow, which will help to further absorb the impact energy and reduce the impact transmitted to the battery cell 30 due to external forces. The design of this shock-absorbing bracket 20 seems to be very suitable for use in battery packs 100 that require high impact protection, such as in automobiles, aviation and portable electronic devices. By comprehensively considering elasticity, strength and modularity, it is possible to protect the battery cell 30 under extreme conditions and improve the overall safety and reliability of the battery pack 100.

[0039] Specifically, the buffer channel includes at least one of a through hole or a through slot 211. The through hole passes through the connection structure of the shock-absorbing bracket 20. The function of the through hole is to allow more material deformation and compression space to provide additional buffering when an impact occurs. The through slot 211 is in the shape of a long strip, extending along the lateral or longitudinal direction of the shock-absorbing bracket 20, increasing the elasticity of the shock-absorbing bracket 20. These through slots 211 serve as shock-absorbing channels, which can provide deformation space when the battery pack 100 is impacted in the lateral or vertical direction, thereby helping to disperse the impact force.

[0040] In some embodiments, the through slot 211 is provided on the longitudinal beam closest to the outside of the shock-absorbing bracket 20, and the extending direction of the through slot 211 is parallel to the cross beam. A through slot 211 is provided at the intersection of the outermost longitudinal beam and the cross beam to form a T-shape. The presence of the through slot 211 increases the elasticity of the longitudinal beam, so that it can have better deformation ability when subjected to impact. This improvement in elasticity helps to reduce damage caused by impact or vibration.

[0041] In some embodiments, the cross-section of the through hole is a rhombus, a semicircle, or a triangle. For the convenience of description, they are named rhombus through hole 214, semicircular through hole 213, and triangular through hole 212. Figure 8As shown, the diamond through hole 214 is arranged at the intersection point where the horizontal beam and the longitudinal beam intersect and can form a cross, the semicircular through hole 213 is arranged on the longitudinal beam and is spaced apart from the through slot 211, that is, two semicircular through holes 213 are spaced apart on both sides of each through slot 211, and the triangular through hole 212 is arranged on the horizontal beam closest to the outside, and the triangular through hole 212 is located at the intersection where the horizontal beam and the longitudinal beam intersect to form a T-shape.

[0042] Among them, the diamond through hole 214 is located at the intersection of the crossbeam and the longitudinal beam to form a cross-shaped structure. This design allows a composite shock-absorbing area to be formed at the intersection, which can absorb impacts in multiple directions. While providing shock-absorbing function, the diamond through hole 214 also maintains the structural integrity at the intersection, because the diamond geometric structure can disperse the load and reduce material fatigue caused by concentrated stress. The semicircular through holes 213 are arranged on the longitudinal beam and alternately arranged with the through grooves 211 at a certain interval. This arrangement can be evenly distributed on the entire longitudinal beam to provide a uniform shock-absorbing effect. The semicircular through holes 213 on both sides can play a shock-absorbing role when a longitudinal impact occurs, and at the same time, through their shape and position, the torsional elasticity of the longitudinal beam can be effectively increased. The triangular through hole 212 is arranged on the crossbeam closest to the outside, located at the intersection where the crossbeam and the longitudinal beam intersect to form a T-shape. The layout of the triangular through hole 212 helps to provide additional strength and shock-absorbing capacity in lateral and longitudinal impacts. The triangle is a very stable geometric shape suitable for bearing concentrated loads. The use of the triangular through hole 212 in the shock-absorbing bracket 20 can increase the shock-absorbing capability without sacrificing the structural strength.

[0043] This embodiment can achieve a composite shock-absorbing effect by using through holes of different shapes at different positions, effectively absorbing and dispersing impact forces in multiple directions. Through holes of various shapes not only reduce shock, but also support the integrity of the entire bracket structure, ensuring that the battery pack 100 can remain stable under various conditions. At the same time, through holes of different shapes and arrangements also promote air flow, help dissipate heat from the battery pack 100, and keep the operating temperature of the battery cell 30 within the optimal range.

[0044] It is understandable that the shock-absorbing bracket 20 is connected to the inner wall of the housing 10 in a detachable manner. The shock-absorbing bracket 20 can be connected to the inner wall of the housing 10 by a buckle or a groove. For example, a groove is provided on the inner wall of the housing 10, and a protrusion that matches the groove is provided on the shock-absorbing bracket 20. After the battery cell 30 is installed on the shock-absorbing bracket 20, the protrusion can be aligned with the groove, and the shock-absorbing bracket 20 can be installed inside the housing 10. In this way, the detachable shock-absorbing bracket 20 can be quickly maintained and replaced without using special tools, reducing maintenance costs and time.

[0045] It is understandable that the shock-absorbing bracket 20 includes a first bracket 21 and a second bracket 22 that are detachably connected, the first bracket 21 is connected to one end of the battery cell 30, and the second bracket 22 is connected to the other end of the battery cell 30. The first bracket 21 and the second bracket 22 have the same structure, and each bracket has a battery cell 30 slot, a crossbeam and a longitudinal beam. The first bracket 21 and the second bracket 22 are arranged in a detachable connection manner, which can simplify the working steps when installing the battery cell 30. It is only necessary to align one end of the battery cell 30 with the battery cell 30 slot of the first bracket 21, and then align the other end of the battery cell 30 with the battery cell 30 slot of the second bracket 22. The first bracket 21 and the second bracket 22 are fixed to quickly install the battery cell 30, and ensure that the battery cell 30 is stable and not easily displaced. The detachable connection method makes the maintenance of the battery pack 100 and the replacement of the battery cell 30 more convenient and faster. The detachable connection method can be specifically that the first bracket 21 or the second bracket 22 is fixed together by a buckle or a bolt.

[0046] It is understandable that the housing 10 includes a first housing body 11 and a second housing body 12 that are detachably connected, and the first housing body 11 and the second housing body 12 are enclosed to form a hollow cavity. The first housing body 11 and the second housing body 12 are detachably connected, so that the assembly and disassembly of the housing 10 become quick and convenient, and adapt to the needs of fast production lines and maintenance. The connection between the first housing body 11 and the second housing body 12 can be made of bolts, screws, quick locks or other forms of mechanical fasteners. It can be designed as a tenon and groove along the edge or a specific joint position to ensure that the two parts are automatically aligned when enclosed.

[0047] Specifically, Figure 2 and Figure 5 As shown, the second shell body 12 is provided with a buckle button 51, and the buckle button 51 is connected to the buckle body 50. The first shell body 11 is provided with an opening that matches the buckle. When the buckle button 51 is pressed, the buckle body 50 is separated from the opening, and the first shell body 11 and the second shell body 12 are separated. When the buckle body 50 enters the opening, the first shell body 11 and the second shell body 12 are combined. At the same time, the edges of the first shell body 11 and the second shell body 12 are also provided with a slot or buckle to further ensure the stability of the first shell body 11 and the second shell body 12 when they are closed.

[0048] It is understandable that if Figure 5 and Figure 6As shown, the battery management unit 40 includes a circuit board 41 and a conductive sheet 42. The circuit board 41 is connected to the shock-absorbing bracket 20 and is electrically connected to the battery cell 30 through the conductive sheet 42. The circuit board 41 can be directly mounted on the shock-absorbing bracket 20 by screws, clamps or other mechanical fasteners, or can be designed as a slot-type installation so that the circuit board 41 can be easily slid into and locked on the shock-absorbing bracket 20. The connection point should be designed with anti-vibration measures, such as using rubber washers or elastic materials to reduce the impact of vibration on the circuit board 41. The conductive sheet 42 is used to connect the circuit board 41 to the positive and negative poles of the battery cell 30. The conductive sheet 42 should have high conductivity, usually made of copper or aluminum, and have appropriate plating to prevent corrosion. To ensure the reliability of the electrical connection, the connection between the conductive sheet 42 and the circuit board 41 and the battery cell 30 may be welded, bolted or plug-and-socket designed.

[0049] In some embodiments, the buffer structure further includes a buffer pad, which is respectively connected to the shock-absorbing bracket 20 and the inner wall surface of the housing 10 (specifically, the inner wall surface of the second housing body 12). The buffer pad can be implemented by a spring, a spring, an elastic rubber or other flexible materials. The elastic structure not only provides support, but also absorbs vibrations caused by device movement or external impact, preventing these vibrations from causing damage to the shock-absorbing bracket 20.

[0050] In some embodiments, the shock-absorbing bracket 20 is a plastic shock-absorbing bracket 20 made of plastic material. The plastic material can be selected from high-performance engineering plastics, such as polycarbonate (PC), polyimide (PAI), polyphenylene sulfide (PPS) or reinforced polybutylene (PP), which have excellent mechanical properties, heat resistance and chemical resistance. If necessary, the plastic can be added with glass fiber, carbon fiber or other reinforcing materials to improve its strength and rigidity.

[0051] This embodiment also includes an electronic device, which includes the above-mentioned battery pack 100. The battery pack 100 is installed in the electronic device, and the electronic device is integrated with a battery management system (BMS), which is connected to the circuit board 41 in the battery pack 100 through the circuit in the electronic device to achieve real-time monitoring and management of the battery status. The electronic device may include electric vehicles (such as electric cars, electric bicycles and electric scooters, which require high-performance battery packs 100 to provide long-term endurance and safety), outdoor emergency power supplies and portable power supplies (such as power supplies for camping, outdoor adventures or emergency situations, which require stable, reliable and easy-to-carry battery packs 100) or electric hardware tools (such as electric saws, etc.), etc.

[0052] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery pack, characterized in that: include: A shell, wherein a hollow cavity is provided inside the shell; A shock-absorbing bracket, wherein the shock-absorbing bracket is arranged in the hollow cavity, and a buffer structure is arranged on the shock-absorbing bracket, and the buffer structure at least includes a buffer channel arranged on the shock-absorbing bracket; A plurality of battery cells are arranged in the hollow cavity and connected to the shock absorbing bracket.

2. The battery pack according to claim 1, characterized in that: The buffer channel includes at least one of a through hole and a through groove.

3. The battery pack according to claim 2, characterized in that: The buffer channel includes the through hole, and the cross section of the through hole is rhombus, semicircle or triangle.

4. The battery pack according to claim 2, characterized in that: The buffer channel includes the through grooves, and the through grooves are arranged at intervals on the outer edge of the shock-absorbing bracket.

5. The battery pack according to claim 4, characterized in that: The cross section of the through slot is in the shape of an elongated strip.

6. The battery pack according to claim 1, characterized in that: The shock-absorbing bracket is detachably connected to the inner wall of the shell.

7. The battery pack according to claim 1, characterized in that: The buffer structure further includes a buffer pad, which is sandwiched between the shock-absorbing bracket and the inner wall surface of the shell.

8. The battery pack according to claim 1, characterized in that: The shock-absorbing bracket includes a first bracket and a second bracket that are detachably connected, the first bracket is connected to one end of the battery cell, and the second bracket is connected to the other end of the battery cell.

9. The battery pack according to claim 1, characterized in that: The shock-absorbing bracket is a plastic shock-absorbing bracket.

10. An electronic device, characterized in that: Comprising a battery pack as claimed in any one of claims 1 to 9.

Images