Lithium battery pack with anti-collision function

Abstract

The utility model discloses a lithium battery pack with an anti-collision function, and relates to the technical field of lithium batteries, the lithium battery pack comprises a protection box, a lithium battery main body, a heat dissipation sleeve, a protection sleeve, a protection cover and a fixing assembly, the protection box is composed of an outer box, a corrugated box plate and an inner box, and the lithium battery main body is placed in the protection box; the protective sleeve is attached to the inner side of the inner box, the lithium battery main body is packaged through the protective cover, when the lithium battery pack is impacted by the outside, the corrugated box plate located between the outer box and the inner box plays a role in first-stage buffering, the protective sleeve with the rectangular hole formed in the upper surface plays a role in second-stage buffering, and through the two-stage buffering of the protective sleeve and the corrugated box plate, the lithium battery pack is prevented from being damaged. The impact of external objects on the lithium battery main body is greatly absorbed, the impact resistance of the lithium battery pack is greatly improved, the failure and fire of the lithium battery pack caused by impact are avoided, and the safety of the lithium battery pack and equipment using the lithium battery pack is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pack with an anti-collision function. Background Art

[0002] Lithium battery is a common rechargeable battery. It uses lithium metal or lithium compound as the positive electrode material and stores and releases electrical energy through the migration of lithium ions between the positive and negative electrodes. Lithium batteries have the advantages of high energy density, light weight, long life and low self-discharge rate, and are widely used in mobile devices, electric vehicles and energy storage systems. There are many types of lithium batteries, such as lithium-ion batteries, lithium polymer batteries and lithium iron batteries. The working principle of lithium batteries is to convert electrical energy through the embedding and de-embedding of lithium ions in the positive electrode material during the charging and discharging process. A lithium battery pack is a battery assembly composed of multiple lithium battery cells. A lithium battery pack is usually composed of multiple lithium battery cells connected in series to provide higher voltage and capacity.

[0003] The lithium battery pack is a combination of lithium batteries that circulate internal charges. When the lithium battery pack is hit, collisions between the individual lithium batteries that make up the lithium battery pack are inevitable, which may cause the following problems:

[0004] 1. The packaging material of lithium batteries is relatively thin. If they are hit hard, the outer shell may break or crack, which will cause the internal materials of the battery to come into contact with the air and may cause combustion or explosion;

[0005] 2. The impact may damage the internal diaphragm of the lithium battery, causing the positive and negative electrodes to contact and cause a short circuit. The short circuit will cause the battery to release heat instantly, the temperature will rise sharply, and it may cause combustion or explosion;

[0006] 3. Impact may cause leakage of electrolyte and other substances inside the lithium battery. The leaked electrolyte may cause combustion or explosion after contact with air, causing harm to the environment and human body;

[0007] 4. The impact may cause damage to the internal components of the lithium battery, resulting in a decrease in battery performance, which may affect the battery's capacity, voltage, safety and other aspects.

[0008] However, most of the current lithium battery packs are installed inside the equipment through simple series and parallel connections, resulting in insufficient impact resistance of the lithium battery packs and posing a major safety hazard.

[0009] Therefore, we propose a lithium battery pack with anti-collision function to solve the above problems. Utility Model Content

[0010] In view of this, the present invention is missing, and its main purpose is to provide a lithium battery pack with an anti-collision function, which serves to solve the above-mentioned problem.

[0011] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: including:

[0012] Protective box;

[0013] A lithium battery body, wherein a plurality of the lithium battery bodies are arranged inside the protective box;

[0014] A heat dissipation sleeve, which is arranged on the outside of the lithium battery body;

[0015] A protective sleeve, the protective sleeve is arranged on the outside of the heat dissipation sleeve;

[0016] A protective cover, the protective cover is fixedly mounted on the upper surface of the protective box, and a heat dissipation hole is opened on the upper surface of the protective cover;

[0017] It also includes a fixing component, which is arranged on the upper surface of the protective cover.

[0018] As a preferred solution, the protective box includes an outer box, a corrugated box board and an inner box, wherein the corrugated box board is attached to the inner side of the outer box, and the inner box is attached to the inner side of the corrugated box board.

[0019] As a preferred solution, the protective cover includes an outer cover plate, a corrugated cover plate and an inner cover plate, wherein the outer cover plate is attached to the lower side of the corrugated cover plate, and the inner cover plate is attached to the lower side of the corrugated cover plate.

[0020] As a preferred solution, the heat dissipation sleeve is attached to the outer side of the lithium battery body, and the outer side of the heat dissipation sleeve is fixedly provided with heat dissipation fins, and the heat dissipation fins are evenly arranged on the outer side of the heat dissipation sleeve.

[0021] As a preferred solution, the protective sleeve is attached to the inner side of the inner box, and rectangular holes are evenly opened on the upper surface of the protective sleeve.

[0022] As a preferred solution, the fixing assembly includes a connecting tube, a fixing sleeve and a fixing cap, wherein the connecting tube is fixedly arranged on the upper surface of the outer cover plate, the fixing sleeve is embedded in the interior of the connecting tube, the fixing cap is threadedly connected to the outside of the connecting tube, and the upper end of the fixing sleeve abuts against the inner side of the fixing cap.

[0023] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly has the following advantages:

[0024] The utility model provides a protection box consisting of an outer box, a corrugated box plate and an inner box, and places a lithium battery body inside the protection box. A heat dissipation sleeve is provided on the outer side of the lithium battery body, and a protective sleeve is provided on the outer side of the heat dissipation sleeve, and the protective sleeve is fitted on the inner side of the inner box, and the lithium battery body is encapsulated by a protective cover. When the lithium battery pack is subjected to external impact, the corrugated box plate between the outer box and the inner box acts as a first-level buffer, and the protective sleeve with rectangular holes on the upper surface acts as a second-level buffer. Through the two-level buffering of the protective sleeve and the corrugated box plate, the impact of external objects on the lithium battery body is greatly absorbed, the impact resistance of the lithium battery pack is greatly improved, the failure and fire of the lithium battery pack due to impact are avoided, and the safety of the lithium battery pack and the equipment using the lithium battery pack is ensured.

[0025] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall assembly of an embodiment of the utility model;

[0027] Figure 2 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0028] Figure 3 It is a schematic cross-sectional view of the upper cover of an embodiment of the utility model;

[0029] Figure 4 It is a schematic diagram of an anti-collision box of an embodiment of the utility model;

[0030] Figure 5 It is a schematic diagram of an anti-collision cover according to an embodiment of the utility model;

[0031] Figure 6 It is a schematic diagram of a heat dissipation sleeve according to an embodiment of the utility model;

[0032] Figure 7 It is an embodiment of the utility model Figure 2 A partial enlarged schematic diagram in the middle;

[0033] Figure 8 It is an embodiment of the utility model Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0034] Explanation of the accompanying drawings: 1. Protective box; 2. Lithium battery body; 3. Heat dissipation sleeve; 4. Protective sleeve; 5. Protective cover; 6. Heat dissipation hole; 7. Connecting tube; 8. Fixing sleeve; 9. Fixing cap; 10. Outer box; 11. Corrugated box plate; 12. Inner box; 13. Heat dissipation fins; 14. Rectangular hole; 15. Outer cover plate; 16. Corrugated cover plate; 17. Inner cover plate. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and implementation examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] See also Figures 1 to 8 The utility model embodiment provides a lithium battery pack with anti-collision function, including a protective box 1, a plurality of lithium battery bodies 2 are arranged inside the protective box 1, and the protective box 1 is composed of an outer box 10, a corrugated box board 11 and an inner box 12. The outer box 10 is located at the outermost side of the lithium battery pack, and the corrugated box board 11 is attached to the inner side of the outer box 10. The corrugated box board 11 is made of rubber material, and the inner box 12 is attached to the inner side of the corrugated box board 11. When the lithium battery pack is hit, the outer box 10 directly contacts with external objects, and the corrugated box board 11 can absorb the impact force of external objects on the outer box 10, and the corrugated box board 11 plays a buffering role. A protective cover 5 is fixedly installed on the upper surface of the protective box 1 by screws, and the protective cover 5 blocks the upper part of the protective box 1 so that the lithium battery body 2 is wrapped inside the protective box 1, and the protective cover 5 It is composed of an outer cover plate 15, a corrugated cover plate 16 and an inner cover plate 17. The outer cover plate 15 is located at the outermost side of the lithium battery pack. The lower surface of the outer cover plate 15 is bonded with the corrugated cover plate 16, which is made of rubber. The lower surface of the corrugated cover plate 16 is bonded with the inner cover plate 17. The protective box 1 is covered with a protective cover 5 composed of a three-layer structure of the outer cover plate 15, the corrugated cover plate 16 and the inner cover plate 17. When the lithium battery pack is subjected to a downward impact, the external object directly impacts the outer cover plate 15. The corrugated cover plate 16 located between the outer cover plate 15 and the inner cover plate 17 can absorb the impact of the external object on the outer cover plate 15. The corrugated cover plate 16 also plays a buffering role. Compared with ordinary flat-pack rubber plates, the wavy corrugated box plates 11 and the corrugated cover plates 16 are softer, have a better effect of absorbing impact force, and have a stronger buffering effect.

[0038] See also Figures 1 to 8A heat dissipation sleeve 3 is provided on the outer side of the lithium battery body 2, and the heat dissipation sleeve 3 is attached to the outer side of the lithium battery body 2. The heat dissipation sleeve 3 is made of heat-conducting metal materials such as copper. A heat dissipation fin 13 is fixedly provided on the outer side of the heat dissipation sleeve 3, and the heat dissipation fin 13 is evenly arranged on the outer side of the heat dissipation sleeve 3. The heat dissipation fin 13 can increase the heat dissipation area of ​​the heat dissipation sleeve 3, so that the lithium battery body 2 located on the inner side of the protective box 1 can dissipate heat quickly, and cooperate with the heat dissipation holes 6 opened on the upper surface of the protective box 1. The heat of the lithium battery pack is dissipated outward from the heat dissipation holes 6. By providing the heat dissipation holes 6 opened on the upper surface of the protective cover 5 and the heat dissipation sleeve 3 sleeved on the outer side of the lithium battery body 2, the heat generated by the lithium battery pack during use can be quickly dissipated, effectively avoiding overheating damage of the lithium battery body 2.

[0039] See also Figures 1 to 8 The outer side of the heat dissipation sleeve 3 is provided with a protective sleeve 4, and the protective sleeve 4 is attached to the inner side of the inner box 12. The protective sleeve 4 is made of rubber material, and rectangular holes 14 are evenly opened on the upper surface of the protective sleeve 4. The protective sleeve 4 is located on the outer side of the lithium battery body 2, and the protective sleeve 4 is located on the inner side of the inner box 12. When the lithium battery pack is subjected to external impact, not only the protective box 1 composed of the three-layer structure of the outer box 10, the corrugated box board 11 and the inner box 12 can absorb the external impact on the lithium battery pack, but the protective sleeve 4 set on the outer side of the heat dissipation sleeve 3 can also absorb the external impact. The rectangular holes 14 can The protective sleeve 4 can be made softer and the buffering effect of the protective sleeve 4 can be enhanced. When the lithium battery pack is subjected to external impact, the corrugated box plate 11 located between the outer box 10 and the inner box 12 plays the first level of buffering, and the protective sleeve 4 with rectangular holes 14 on the upper surface plays the second level of buffering. Through the two-level buffering of the protective sleeve 4 and the corrugated box plate 11, the impact of external objects on the lithium battery body 2 is greatly absorbed, the impact resistance of the lithium battery pack is greatly improved, the failure and fire of the lithium battery pack due to impact are avoided, and the safety of the lithium battery pack and the equipment using the lithium battery pack is ensured.

[0040] See also Figures 1 to 8 A connecting tube 7 is fixedly installed on the upper part of the protective box 1, and a fixing sleeve 8 is embedded in the interior of the connecting tube 7. The fixing sleeve 8 is made of rubber material, and the height of the fixing sleeve 8 is greater than the height of the connecting tube 7. The outer side of the connecting tube 7 is threadedly connected with a fixing cap 9, and the upper end of the fixing sleeve 8 abuts against the inner side of the fixing cap 9. When assembling the lithium battery pack, the output wire is passed through the fine hole in the middle of the fixing sleeve 8, and the fixing cap 9 threadedly connected to the outer side of the connecting tube 7 is tightened, so that the fixing cap 9 squeezes the fixing sleeve 8 embedded in the inside of the connecting tube 7. When the fixing sleeve 8 made of rubber material is subjected to pressure, the inner hole shrinks, and then the wire is locked in the inside of the fixing sleeve 8, thereby fixing the output wire. When the lithium battery pack is hit, the fixing assembly composed of the connecting tube 7, the fixing sleeve 8 and the fixing cap 9 can effectively prevent the output wire from falling off the lithium battery pack, thereby ensuring the stable operation of the lithium battery pack.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery pack with anti-collision function, characterized in that: include: Protective box (1); A lithium battery main body (2), wherein a plurality of the lithium battery main bodies (2) are arranged inside the protective box (1); A heat dissipation sleeve (3), the heat dissipation sleeve (3) being sleeved on the outside of the lithium battery body (2); A protective sleeve (4), the protective sleeve (4) being sleeved on the outside of the heat dissipation sleeve (3); A protective cover (5), the protective cover (5) being fixedly mounted on the upper surface of the protective box (1), and the upper surface of the protective cover (5) being provided with heat dissipation holes (6); It also comprises a fixing component, which is arranged on the upper surface of the protective cover (5).

2. The lithium battery pack with anti-collision function according to claim 1, characterized in that: The protective box (1) comprises an outer box (10), a corrugated box board (11) and an inner box (12), wherein the corrugated box board (11) is attached to the inner side of the outer box (10), and the inner box (12) is attached to the inner side of the corrugated box board (11).

3. The lithium battery pack with anti-collision function according to claim 1, characterized in that: The protective cover (5) comprises an outer cover plate (15), a corrugated cover plate (16) and an inner cover plate (17), wherein the outer cover plate (15) is attached to the lower side of the corrugated cover plate (16), and the inner cover plate (17) is attached to the lower side of the corrugated cover plate (16).

4. The lithium battery pack with anti-collision function according to claim 1, characterized in that: The heat dissipation sleeve (3) is attached to the outside of the lithium battery body (2), and heat dissipation fins (13) are fixedly arranged on the outside of the heat dissipation sleeve (3), and the heat dissipation fins (13) are evenly arranged on the outside of the heat dissipation sleeve (3).

5. The lithium battery pack with anti-collision function according to claim 2, characterized in that: The protective sleeve (4) is fitted onto the inner side of the inner box (12), and rectangular holes (14) are evenly arranged on the upper surface of the protective sleeve (4).

6. The lithium battery pack with anti-collision function according to claim 1, characterized in that: The fixing assembly comprises a connecting tube (7), a fixing sleeve (8) and a fixing cap (9); the connecting tube (7) is fixedly arranged on the upper surface of the outer cover plate (15); the fixing sleeve (8) is embedded in the interior of the connecting tube (7); the fixing cap (9) is threadedly connected to the outside of the connecting tube (7); and the upper end of the fixing sleeve (8) abuts against the inside of the fixing cap (9).

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