Lithium iron phosphate battery pack

Abstract

The utility model relates to the field of battery packs, and discloses a lithium iron phosphate battery pack which comprises a partition plate, a battery pack body and a protective shell, the partition plate is fixedly connected to the inner side of the battery pack body, cooling fins are fixedly connected to the two ends of the partition plate, fixing plates are fixedly connected to the two sides of the battery pack body, and limiting blocks are fixedly connected to the two sides of the fixing plates; a protective shell is movably installed on the periphery of the battery pack body, threaded rods are movably installed on the two sides of the protective shell, and a buffer plate is fixedly connected to the bottom of the protective shell. Through combination of the high-thermal-conductivity plastic partition plate, the cooling fins and the aluminum alloy shell, the safety, stability and heat dissipation performance of the battery pack are effectively improved, the partition plate avoids short circuit and conducts heat, the cooling fins optimize heat dissipation, the aluminum alloy shell enhances strength and corrosion resistance, the heat conduction silica gel improves the heat conduction efficiency, the polyurethane foam absorbs shock, and the service life of the battery pack is prolonged. Stable operation of the battery in a complex environment is ensured, the service life is prolonged, and maintenance is easy.

Description

Technical Field

[0001] This application relates to the field of battery pack technology, and in particular to a lithium iron phosphate battery pack. Background Technology

[0002] Lithium iron phosphate (LFP) battery packs are battery packs composed of multiple LFP battery cells. They are widely used in electric vehicles, energy storage devices, and other fields. Using LFP as the cathode material, they have high thermal stability, safety, and long service life. Compared with traditional lithium batteries, LFP batteries are more stable during charging and discharging, have stronger resistance to overcharging and over-discharging, are environmentally friendly, and have a long cycle life. Therefore, they are considered a high-safety and high-reliability battery technology.

[0003] Currently, lithium iron phosphate battery packs lack separation and protection structures, making them prone to short circuits, overheating, or physical collisions between batteries during use. This affects battery safety and makes them susceptible to damage from external forces due to inadequate protection. Utility Model Content

[0004] To address the problems mentioned in the background art, this application provides a lithium iron phosphate battery pack.

[0005] The lithium iron phosphate battery pack provided in this application adopts the following technical solution:

[0006] A lithium iron phosphate battery pack includes a separator, a battery pack body, and a protective shell. The separator is fixedly connected to the inner side of the battery pack body, and heat sinks are fixedly connected to both ends of the separator. Fixing plates are fixedly connected to both sides of the battery pack body, and limit blocks are fixedly connected to both sides of the fixing plates. The protective shell is movably installed on the periphery of the battery pack body, and threaded rods are movably installed on both sides of the protective shell. A buffer plate is fixedly connected to the bottom of the protective shell.

[0007] Preferably, the inner side of the protective shell is provided with a limiting groove, and the limiting block is fitted into the limiting groove.

[0008] Preferably, the fixing plate has bolt holes on both sides inside, and the threaded rod is threadedly connected to the bolt holes.

[0009] Preferably, both ends of the protective shell are fixedly connected to fixing blocks, and the inner side of the fixing blocks is fixedly connected to fixing rods.

[0010] Preferably, a moisture-proof pad is fixedly connected to the bottom of the battery pack body, and the moisture-proof pad is made of PVC material.

[0011] In summary, this application includes the following beneficial technical effects:

[0012] By combining high thermal conductivity plastic separators and a protective shell, the safety, stability, and heat dissipation performance of the battery pack are significantly improved. The separators effectively prevent short circuits between batteries, absorb and transfer heat, and the heat sinks quickly dissipate heat into the surrounding air, reducing battery temperature unevenness and extending battery life. The aluminum alloy shell provides strength and corrosion resistance, and the thermally conductive silicone improves thermal conductivity and provides electrical insulation. The polyurethane foam effectively absorbs shocks and reduces the impact of external impacts on the battery. The overall design ensures long-term stable operation of the battery in complex environments, while also being easy to maintain, thus improving the battery pack's lifespan and reliability. Attached Figure Description

[0013] Figure 1 This is a structural breakdown diagram of an embodiment of the application;

[0014] Figure 2 This is an overall perspective view of the embodiment of the application;

[0015] Figure 3 This is a partial structural diagram of the battery pack body and the moisture-proof pad in an embodiment of the application.

[0016] Explanation of reference numerals in the attached drawings: 1. Separator plate; 101. Heat sink; 2. Battery pack body; 201. Plug hole; 3. Protective shell; 301. Limiting groove; 4. Fixing rod; 401. Fixing block; 5. Buffer plate; 6. Threaded rod; 7. Moisture-proof pad; 8. Limiting block; 9. Fixing plate. Detailed Implementation

[0017] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0018] This application discloses a lithium iron phosphate battery pack. (Refer to...) Figures 1-3A lithium iron phosphate battery pack includes a separator plate 1, a battery pack body 2, and a protective shell 3. The separator plate 1 is fixedly connected to the inner side of the battery pack body 2, and heat sinks 101 are fixedly connected to both ends of the separator plate 1. Fixing plates 9 are fixedly connected to both sides of the battery pack body 2, and limit blocks 8 are fixedly connected to both sides of the fixing plates 9. The protective shell 3 is movably installed on the outer periphery of the battery pack body 2, and threaded rods 6 are movably installed on both sides of the protective shell 3. A buffer plate 5 is fixedly connected to the bottom of the protective shell 3. The separator plate 1 is made of high thermal conductivity plastic material, which can improve the safety and stability of the battery pack, avoid short circuits between batteries, and absorb the heat of the battery and transfer it to the heat sinks 101. The heat sinks 101 are made of heat-dissipating copper material, which can quickly transfer heat to the surrounding environment. Air helps the battery pack dissipate heat better, reduces temperature unevenness between batteries, and extends battery life. The protective shell 3 uses aluminum alloy as the outer shell material, combined with thermally conductive silicone and polyurethane foam as the inner layer material. Aluminum alloy has high strength, good heat dissipation and corrosion resistance, effectively preventing external impact, improving heat dissipation, and extending battery life. Thermally conductive silicone improves heat conduction efficiency, avoids overheating, and also has electrical insulation. Polyurethane foam provides excellent shock absorption, reducing vibration and impact damage to the battery. The overall combination ensures that the battery pack performs well in terms of mechanical protection, temperature control, and durability, and adapts to various complex environments. The staff can unscrew the threaded rod 6 to pull and remove the protective shell 3 and perform maintenance work on the battery pack body 2.

[0019] Reference Figure 1 The inner side of the protective shell 3 is provided with a limiting groove 301, and the limiting block 8 is fitted into the limiting groove 301. The limiting block 8 is embedded into the inside of the limiting groove 301, which increases the friction between the protective shell 3 and the fixing plate 9 and improves the stability of the installation of the protective shell 3.

[0020] Reference Figure 1 Both sides of the fixed plate 9 are provided with bolt holes 201, and the threaded rod 6 is threaded to the bolt holes 201. Screwing the threaded rod 6 into the bolt holes 201 increases the friction between the protective shell 3 and the fixed plate 9, thereby fixing the protective shell 3 and the fixed plate 9.

[0021] Reference Figure 1 Both ends of the protective shell 3 are fixedly connected to fixing blocks 401, and the inner side of the fixing blocks 401 is fixedly connected to fixing rods 4. When the staff connects the external lifting structure to the fixing rods 4, the moving device can be lifted by external equipment. The fixing rods 4 are fixedly connected to the protective shell 3 through the fixing blocks 401.

[0022] Reference Figure 3A moisture-proof pad 7 is fixedly connected to the bottom of the battery pack body 2. The moisture-proof pad 7 is made of PVC material. The moisture-proof pad 7 can form a protection on the bottom of the battery pack body 2 to prevent the bottom of the battery pack body 2 from getting damp and damaged.

[0023] The implementation principle of a lithium iron phosphate battery pack according to an embodiment of this application is as follows: The separator 1 is made of high thermal conductivity plastic material to avoid short circuits between batteries and to absorb and transfer battery heat to the heat sink 101. The heat sink 101 is made of heat-dissipating copper material to quickly conduct heat to the surrounding air, thereby helping the battery pack dissipate heat. The protective shell 3 is made of aluminum alloy as the outer shell material, combined with thermally conductive silicone and polyurethane foam as the inner layer material. The aluminum alloy has high strength and corrosion resistance, which can improve the heat dissipation effect and prevent external impact. The thermally conductive silicone is used to improve the heat conduction efficiency, avoid overheating, and has electrical insulation. The polyurethane foam is used for shock absorption to reduce the damage of vibration and impact to the battery. The operator can remove the protective shell 3 by unscrewing the threaded rod 6 to carry out maintenance work on the battery pack body 2.

[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0025] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0027] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lithium iron phosphate battery pack, comprising a separator (1), a battery pack body (2), and a protective shell (3), characterized in that: A partition plate (1) is fixedly connected to the inner side of the battery pack body (2). Heat sinks (101) are fixedly connected to both ends of the partition plate (1). Fixing plates (9) are fixedly connected to both sides of the battery pack body (2). Limiting blocks (8) are fixedly connected to both sides of the fixing plates (9). A protective shell (3) is movably installed on the periphery of the battery pack body (2). Threaded rods (6) are movably installed on both sides of the protective shell (3). A buffer plate (5) is fixedly connected to the bottom of the protective shell (3).

2. The lithium iron phosphate battery pack according to claim 1, characterized in that: The inner side of the protective shell (3) is provided with a limiting groove (301), and the limiting block (8) is fitted into the limiting groove (301).

3. A lithium iron phosphate battery pack according to claim 1, characterized in that: Both sides of the fixed plate (9) are provided with bolt holes (201), and the threaded rod (6) is threadedly connected to the bolt holes (201).

4. A lithium iron phosphate battery pack according to claim 1, characterized in that: Both ends of the protective shell (3) are fixedly connected to fixing blocks (401), and fixing rods (4) are fixedly connected to the inner side of the fixing blocks (401).

5. A lithium iron phosphate battery pack according to claim 1, characterized in that: The bottom of the battery pack body (2) is fixedly connected to a moisture-proof pad (7), and the moisture-proof pad (7) is made of PVC material.

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