Lithium battery pack with flame retardant effect

Abstract

The utility model provides a lithium battery pack with a flame retardant effect, and relates to the technical field of lithium batteries, the lithium battery pack comprises a battery module and a protection box arranged on the periphery of the battery module, the protection box comprises a bottom plate and an upper cover, a mounting plate is arranged in the middle of the upper end of the bottom plate, and a clamping assembly is arranged in the middle of the upper end of the mounting plate; the clamping assembly comprises multiple sets of lower clamping blocks and multiple sets of upper clamping blocks, the multiple sets of lower clamping blocks are fixedly installed on the surface of the upper end of the installation plate, the multiple sets of upper clamping blocks are located in the middle of the inner side of the upper cover, and the multiple sets of lower clamping blocks correspond to the multiple sets of upper clamping blocks in position; the periphery of the battery module is clamped and limited through the multiple groups of lower clamping blocks and the multiple groups of upper clamping blocks; a heat dissipation assembly and a fire extinguishing assembly are arranged in the protection box; the fire extinguishing assembly comprises a plurality of groups of fire extinguishing balls. According to the utility model, the heat dissipation assembly and the fire extinguishing assembly are arranged, so that the ventilation and heat dissipation effects of the battery module are improved, and fire disasters are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery pack with flame retardant effect. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Lithium metal batteries were first proposed and studied by Gilbert N. Lewis in 1912. In the 1970s, M.S. Whittingham proposed and began to study lithium-ion batteries. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. With the development of science and technology, lithium batteries have become mainstream.

[0003] Lithium batteries are connected through multiple monomers to form a lithium battery pack. Lithium battery packs generate heat when charging and discharging. When encountering high temperatures, the lithium battery pack can easily cause combustion, damage the lithium battery, or even cause the lithium battery to explode, leading to safety accidents.

[0004] In order to solve the above problems, we propose a lithium battery pack with flame retardant effect to solve the above problems. Utility Model Content

[0005] In order to solve the problems in the background technology, the utility model provides a lithium battery pack with flame retardant effect.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A lithium battery pack with flame retardant effect, comprising a battery module, and a protective box arranged on the periphery of the battery module, the protective box comprising a bottom plate and an upper cover, a mounting plate is arranged in the middle of the upper end of the bottom plate, and a clamping assembly is arranged in the middle of the upper end of the mounting plate; the clamping assembly comprises a plurality of groups of lower clamping blocks and a plurality of groups of upper clamping blocks, the plurality of groups of the lower clamping blocks are fixedly mounted on the upper end surface of the mounting plate, and the plurality of groups of the upper clamping blocks are located in the inner middle of the upper cover, wherein the positions of the plurality of groups of the lower clamping blocks correspond to the positions of the plurality of groups of the upper clamping blocks, and the battery module is clamped and limited on all sides by the plurality of groups of the lower clamping blocks and the plurality of groups of the upper clamping blocks, and the battery module can be installed overhead by the clamping assembly to maintain air circulation around the battery module, thereby playing a role in ventilation and heat dissipation for the heat generated by the battery module during operation.

[0008] The protective box is provided with a heat dissipation component and a fire extinguishing component; the fire extinguishing component includes multiple groups of fire extinguishing balls, and the multiple groups of fire extinguishing balls are located in the middle of the upper end of the battery module. When the battery module spontaneously combusts, the flames generated will burn the fire extinguishing balls, and the burning of the fire extinguishing balls will burst out a large amount of fire extinguishing agent, thereby extinguishing the battery module and effectively avoiding the outbreak of fire.

[0009] Preferably, the heat dissipation assembly includes a heat dissipation fan, which is located in the middle of the right end of the upper cover. A plurality of air holes are provided in the middle of both ends of the upper cover. The plurality of air holes are distributed in an array. The heat dissipation fan is used to blow air into the protective box to increase the air circulation speed in the protective box, thereby improving the ventilation and heat dissipation efficiency of the battery module.

[0010] Preferably, a mounting groove is provided in the middle of the upper end of the upper cover, the fire extinguishing ball is placed in the middle of the inner side of the mounting groove, and both ends and the bottom end of the mounting groove are provided with through openings.

[0011] Preferably, a plurality of groups of partition plates are arranged in the middle of the inner side of the installation groove, and the plurality of groups of partition plates are distributed at equal intervals to prevent the fire extinguishing balls from colliding with each other and causing explosions.

[0012] Preferably, a sealing plate is provided in the middle of the upper end of the installation groove, and the sealing plate is sealingly installed in the middle of the upper end of the upper cover. A limiting plate is provided in the middle of the bottom end of the sealing plate, and the limiting plate is used to press and limit the top of the fire extinguishing ball. The limiting plate can press and limit the fire extinguishing ball to prevent the fire extinguishing ball from shaking in the installation groove.

[0013] Preferably, positioning columns are provided on both sides of the bottom end of the sealing plate, and positioning holes are provided in the middle of both ends of the installation groove. The positioning columns are plugged into the positioning holes, so as to facilitate the staff to quickly install the sealing plate.

[0014] Preferably, a ventilation groove is provided on the lower side of the left end of the upper cover to further improve the ventilation and heat dissipation effect in the protective box.

[0015] Preferably, a protective filter is provided on the periphery of the heat dissipation fan, and the protective filter is fixedly installed in the middle of the right end of the upper cover.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. In this scheme, the battery module is firstly installed overhead by means of a clamping assembly to maintain air circulation around the battery module, thereby playing a role in ventilation and heat dissipation for the heat generated by the battery module during operation; at the same time, air holes, air grooves and heat dissipation fans are also provided. The heat dissipation fans are used to blow air, which can speed up the air circulation speed in the protective box and effectively improve the efficiency of ventilation and heat dissipation, thereby avoiding the accumulation of a large amount of high temperature in the battery module during operation, which may lead to spontaneous combustion;

[0018] 2. In this solution, multiple groups of fire extinguishing balls are arranged in the middle of the upper end of the battery module. When the battery module spontaneously ignites and catches fire, the fire extinguishing balls will explode a large amount of fire extinguishing agent due to combustion, thereby extinguishing the fire of the battery module, playing a flame retardant role, and avoiding further outbreak and spread of the fire to cause safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a side sectional structural diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the overall structure of the driving mechanism in the utility model;

[0022] Figure 4 It is a structural schematic diagram of the middle connecting member and the telescopic rod of the utility model;

[0023] Figure 5 It is a schematic diagram of the bottom structure of the heat insulation board in the utility model.

[0024] In the figure: 1. bottom plate; 2. upper cover; 21. ventilation groove; 22. ventilation hole; 23. protective filter; 24. cooling fan; 3. mounting plate; 31. lower clamping plate; 32. upper clamping plate; 4. sealing plate; 41. positioning column; 42. limit plate; 5. mounting groove; 51. partition plate; 52. positioning hole; 6. fire extinguisher ball; 7. battery module. DETAILED DESCRIPTION

[0025] The embodiment of the present application provides a lithium battery pack with flame retardant effect. By providing a heat dissipation component and a fire extinguishing component, the ventilation and heat dissipation effect of the battery module 7 can be improved, thereby preventing the lithium battery pack from generating high temperature and causing fire.

[0026] Example 1: Reference Figure 1-5 As shown, a lithium battery pack with flame retardant effect of the present embodiment includes a battery module 7, and a protective box is arranged on the periphery of the battery module 7, which mainly plays a role of protecting the battery module 7. The protective box includes a bottom plate 1 and an upper cover 2. The bottom plate 1 and the upper cover 2 are connected and fixed by multiple sets of fixing screws. A mounting plate 3 is arranged in the middle of the upper end of the bottom plate 1, and a clamping assembly is arranged in the middle of the upper end of the mounting plate 3;

[0027] The clamping assembly includes multiple groups of lower clamping blocks 31 and multiple groups of upper clamping blocks 32. The multiple groups of lower clamping blocks 31 are fixedly installed on the upper end surface of the mounting plate 3, and the multiple groups of upper clamping blocks 32 are located in the inner middle part of the upper cover 2, wherein the multiple groups of lower clamping blocks 31 correspond to the positions of the multiple groups of upper clamping blocks 32, and the battery module 7 is clamped and limited around by the multiple groups of lower clamping blocks 31 and the multiple groups of upper clamping blocks 32, so as to realize the overhead installation of the battery module 7, so that the four sides of the battery module 7 are kept unobstructed, so as to facilitate the ventilation and heat dissipation of the heat generated during the operation of the battery module 7.

[0028] At the same time, a heat dissipation component and a fire extinguishing component are arranged in the protection box;

[0029] Among them, the heat dissipation component includes a heat dissipation fan 24, which is located in the middle of the right end of the upper cover 2, and a plurality of air holes 22 are provided in the middle of both ends of the upper cover 2, and the plurality of air holes 22 are distributed in an array. At the same time, a ventilation groove 21 is provided on the lower side of the left end of the upper cover 2. The air in the protective box and the outside air are always kept unobstructed through the ventilation groove 21 and the air holes 22, so as to provide good ventilation and heat dissipation for the heat generated during the operation of the battery module 7. In addition, by operating the heat dissipation fan 24, the circulation of air in the protective box and the outside world can be accelerated, thereby improving the efficiency of ventilation and heat dissipation.

[0030] In some examples, a protective filter 23 is disposed on the periphery of the cooling fan 24 . The protective filter 23 is fixedly installed in the middle of the right end of the upper cover 2 . The protective filter 23 can filter and protect the cooling fan 24 .

[0031] The working principle of the utility model is:

[0032] By providing a clamping assembly in the middle of the inner side of the protective box, the battery module 7 can be installed overhead, and then by providing a ventilation groove 21 and a ventilation hole 22, the air in the protective box and the outside air are always kept unobstructed, so as to provide good ventilation and heat dissipation for the heat generated by the battery module 7 during operation, effectively avoiding the high temperature of the battery module 7, which may lead to spontaneous combustion, thereby playing a flame retardant role.

[0033] Example 2: Reference Figure 1-5 As shown, based on Example 1, a lithium battery pack with flame retardant effect also includes the following structure:

[0034] The fire extinguishing assembly includes multiple groups of fire extinguishing balls 6, which are located in the middle of the upper end of the battery module 7. When the battery module 7 spontaneously ignites due to high temperature, the flames will drift upward, thereby triggering the fire extinguishing balls 6. The fire extinguishing agent released by the fire extinguishing balls 6 can extinguish the flames, thereby effectively preventing the outbreak and spread of fire and playing a flame retardant role.

[0035] A mounting groove 5 is provided in the middle of the upper end of the upper cover 2, and a fire extinguishing ball 6 is placed in the middle of the inner side of the mounting groove 5. Through openings are provided at both ends and the bottom of the mounting groove 5 to facilitate the fire extinguishing ball 6 to release fire extinguishing agent to extinguish the battery module 7.

[0036] A plurality of groups of partition plates 51 are arranged in the middle of the inner side of the installation groove 5, and the plurality of groups of partition plates 51 are equidistantly distributed. A sealing plate 4 is arranged in the middle of the upper end of the installation groove 5, and the sealing plate 4 is sealingly installed in the middle of the upper end of the upper cover 2. A limiting plate 42 is arranged in the middle of the bottom end of the sealing plate 4, and the limiting plate 42 is used to press and limit the top of the fire extinguishing ball 6. The plurality of groups of fire extinguishing balls 6 can be separated and limited by the partition plates 51 and the limiting plates 42 to avoid collision between the fire extinguishing balls 6 and safety problems.

[0037] In some examples, positioning columns 41 are provided on both sides of the bottom end of the sealing plate 4, and positioning holes 52 are provided in the middle of both ends of the installation groove 5. The positioning columns 41 are plugged into the positioning holes 52, so as to facilitate the rapid positioning and installation of the sealing plate 4, and then the sealing plate 4 and the upper cover 2 are connected and fixed by multiple sets of fixing screws.

[0038] The working principle of the utility model is: by arranging a plurality of fire extinguishing balls 6 in the middle of the upper end of the battery module 7, when the battery module 7 spontaneously ignites and catches fire, the fire extinguishing balls 6 will explode a large amount of fire extinguishing agent due to combustion, thereby extinguishing the fire of the battery module 7 and preventing the fire from further breaking out and causing safety accidents.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A lithium battery pack with flame retardant effect, comprising a battery module (7), and a protective box arranged on the periphery of the battery module (7), characterized in that: The protective box comprises a bottom plate (1) and an upper cover (2); a mounting plate (3) is arranged at the middle of the upper end of the bottom plate (1); and a clamping assembly is arranged at the middle of the upper end of the mounting plate (3); The clamping assembly comprises a plurality of groups of lower clamping blocks (31) and a plurality of groups of upper clamping blocks (32), wherein the plurality of groups of lower clamping blocks (31) are fixedly mounted on the upper end surface of the mounting plate (3), and the plurality of groups of upper clamping blocks (32) are located in the middle of the inner side of the upper cover (2), wherein the positions of the plurality of groups of lower clamping blocks (31) correspond to the positions of the plurality of groups of upper clamping blocks (32), and the battery module (7) is clamped and limited by the plurality of groups of lower clamping blocks (31) and the plurality of groups of upper clamping blocks (32); The protection box is provided with a heat dissipation component and a fire extinguishing component; The heat dissipation component comprises a heat dissipation fan (24), the heat dissipation fan (24) is located in the middle of the right end of the upper cover (2), and a plurality of groups of air holes (22) are provided in the middle of both ends of the upper cover (2), and the plurality of groups of air holes (22) are distributed in an array; The fire extinguishing assembly comprises a plurality of groups of fire extinguishing balls (6), wherein the plurality of groups of fire extinguishing balls (6) are located in the middle of the upper end of the battery module (7).

2. A lithium battery pack with flame retardant effect according to claim 1, characterized in that: A mounting groove (5) is provided in the middle of the upper end of the upper cover (2), the fire extinguishing ball (6) is placed in the middle of the inner side of the mounting groove (5), and both ends and the bottom of the mounting groove (5) are provided with openings.

3. A lithium battery pack with flame retardant effect according to claim 2, characterized in that: A plurality of groups of partition plates (51) are arranged in the middle of the inner side of the installation groove (5), and the plurality of groups of partition plates (51) are distributed at equal intervals.

4. A lithium battery pack with flame retardant effect according to claim 3, characterized in that: A sealing plate (4) is provided at the middle of the upper end of the installation groove (5), and the sealing plate (4) is sealingly installed at the middle of the upper end of the upper cover (2). A limiting plate (42) is provided at the middle of the bottom end of the sealing plate (4), and the limiting plate (42) is used to press and limit the top of the fire extinguishing ball (6).

5. A lithium battery pack with flame retardant effect according to claim 4, characterized in that: Positioning columns (41) are provided on both sides of the bottom end of the sealing plate (4), and positioning holes (52) are provided in the middle of both ends of the installation groove (5), and the positioning columns (41) are plugged into the positioning holes (52).

6. A lithium battery pack with flame retardant effect according to claim 4, characterized in that: A ventilation groove (21) is provided on the lower side of the left end of the upper cover (2).

7. A lithium battery pack with flame retardant effect according to claim 6, characterized in that: A protective filter (23) is provided on the periphery of the heat dissipation fan (24), and the protective filter (23) is fixedly mounted on the middle part of the right end of the upper cover (2).

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