24V lithium ion battery

Abstract

The utility model discloses a 24V lithium ion battery which comprises a battery box body, a box cover is arranged at the upper end of the battery box body, a stiffening beam framework is arranged in the battery box body, a battery module is arranged on the inner side of the stiffening beam framework, a pressing strip is fixedly arranged at the lower end of the box cover, and the pressing strip is located above the battery module. Upper end buffer foam and lower end buffer foam are arranged in the battery box body, the two ends of the upper end buffer foam are attached to the lower ends of the pressing strips and the upper ends of the battery modules respectively, the two ends of the lower end buffer foam are attached to the lower ends of the battery modules and the inner bottom of the battery box body respectively, and a cooling fan is further installed on the inner side of the battery box body. The heat dissipation fan is arranged on one side of the battery module, a PI heating film, a heat conduction silica gel sheet and an epoxy plate are sequentially arranged on the outer side of the battery module, a ventilation valve is further arranged on the box cover, the bottom end of the ventilation valve is located in the battery box body, and the battery box has the advantages that the structure is reasonable, the protection effect is good, and the heat dissipation function and the preheating function are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a 24V lithium ion battery. Background Art

[0002] Lithium-ion batteries are rechargeable, secondary batteries. With electric vehicle penetration exceeding 50%, commercial vehicles, both traditional internal combustion engine vehicles and new energy vehicles, generally rely on lead-acid batteries to power low-voltage electrical appliances. These batteries suffer from low energy density, short cycle life, and poor low-temperature starting performance.

[0003] In existing technologies, lithium-ion batteries have poor protection and are easily damaged by collisions and jolts. They also tend to generate high temperatures after prolonged use. Furthermore, their charge levels are easily misreported at low temperatures. Repeated exposure to high and low temperatures can cause battery failure, thus shortening their service life. To address these issues, the following solution is proposed. Utility Model Content

[0004] The utility model aims to provide a 24V lithium-ion battery, which has the advantages of good protection effect, heat dissipation function and preheating function.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] A 24V lithium-ion battery comprises a battery box body, a box cover is provided at the upper end of the battery box body, a reinforcing beam frame is provided in the battery box body, a battery module is provided on the inner side of the reinforcing beam frame, a molding is fixedly provided at the lower end of the box cover, and the molding is located above the battery module, an upper end buffer foam and a lower end buffer foam are provided in the battery box body, the two ends of the upper end buffer foam are respectively fitted with the lower end of the molding and the upper end of the battery module, and the two ends of the lower end buffer foam are respectively fitted with the lower end of the battery module and the inner bottom of the battery box body, a cooling fan is also installed on the inner side of the battery box body, and the cooling fan is located on one side of the battery module.

[0007] Preferably, a PI heating film, a thermally conductive silicone sheet and an epoxy board are sequentially arranged on the outside of the battery module.

[0008] Preferably, the box cover is further provided with a ventilation valve, and the bottom end of the ventilation valve is located inside the battery box body.

[0009] Preferably, a power plate is installed on one side of the reinforcing beam frame, and the power plate is electrically connected to the battery module. Two busbars are connected to one side of the power plate. Two connecting pole seats are provided on the box cover, and the two connecting pole seats are electrically connected to the two busbars respectively.

[0010] Preferably, the box cover is provided with a plurality of rivet nuts, the lower ends of the plurality of rivet nuts are respectively provided in the battery box body, and the box cover and the battery box body are fixedly connected by the plurality of rivet nuts, and a waterproof gasket is also provided between the battery box body and the box cover.

[0011] The beneficial effects of the utility model are:

[0012] 1. The waterproof gasket can increase the sealing between the battery box body and the box cover, thereby ensuring the safety of battery use. The pressure strips and the reinforced beam frame can support and install the battery module, and the pressure strips can limit and fix the installation of the battery module to prevent the battery module from positional displacement, thereby further ensuring the safety of battery use. The upper and lower buffer foams can buffer the battery module, thereby improving the overall stability of the battery and thus improving the safety of battery use.

[0013] 2. The cooling fan can dissipate heat inside the battery, and the air valve can dissipate heat inside the battery to prevent the battery from overheating. When the weather is cold, the PI heating film can be used to preheat the battery, and the thermal conductive silicone sheet can evenly distribute heat inside the battery, thereby improving the preheating efficiency. The epoxy board can block heat to prevent heat loss from the thermal conductive silicone sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of an embodiment;

[0015] Figure 2 This is a structural diagram of an embodiment without the box cover;

[0016] Figure 3 is a cross-sectional view of an embodiment;

[0017] Figure 4 This is a structural diagram of an embodiment without the battery box body;

[0018] Figure 5 for Figure 3 Magnified view of area A in center.

[0019] Figure numerals: 1. Battery box body; 2. Box cover; 3. Reinforced beam frame; 4. Battery module; 5. Pressure strip; 6. Upper end buffer foam; 7. Lower end buffer foam; 8. Cooling fan; 9. PI heating film; 10. Thermal conductive silicone sheet; 11. Epoxy board; 12. Breathable valve; 13. Power board; 14. Busbar; 15. Connecting pole seat; 16. Rivet nut; 17. Waterproof gasket. DETAILED DESCRIPTION

[0020] The following is only a preferred embodiment of the present invention, and the scope of protection is not limited to this embodiment. All technical solutions under the concept of the present invention should fall within the scope of protection of the present invention. The same parts are represented by the same figure marks. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to the directions in the accompanying drawings, and the words "bottom" and "top", "inside" and "outside" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0021] like Figures 1 to 5 As shown, a 24V lithium-ion battery includes a battery box body 1, a box cover 2 is provided at the upper end of the battery box body 1, and a plurality of rivet nuts 16 are inserted into the box cover 2. The lower ends of the plurality of rivet nuts 16 are respectively inserted into the battery box body 1. The box cover 2 and the battery box body 1 are fixedly connected by the plurality of rivet nuts 16. The plurality of rivet nuts 16 can achieve the fixation between the box cover 2 and the battery box body 1. A waterproof gasket 17 is also provided between the battery box body 1 and the box cover 2. The waterproof gasket 17 can enhance the sealing between the battery box body 1 and the box cover 2, thereby ensuring the safety of the battery.

[0022] A reinforcing beam frame 3 is provided in the battery box body 1, and a battery module 4 is provided on the inner side of the reinforcing beam frame 3. A pressure strip 5 is fixed to the lower end of the box cover 2, and the pressure strip 5 is located above the battery module 4. Through the pressure strip 5, the battery module 4 can be supported and installed through the reinforcing beam frame 3, and the installation of the battery module 4 can be limited and fixed through the pressure strip 5 to prevent the battery module 4 from positional displacement, thereby further ensuring the safety of battery use.

[0023] An upper buffer foam 6 and a lower buffer foam 7 are provided in the battery box body 1. The two ends of the upper buffer foam 6 are respectively fitted with the lower end of the pressure strip 5 and the upper end of the battery module 4, and the two ends of the lower buffer foam 7 are respectively fitted with the lower end of the battery module 4 and the inner bottom of the battery box body 1. The upper buffer foam 6 and the lower buffer foam 7 can play a buffering role on the battery module 4, thereby improving the overall stability of the battery and thereby improving the safety of battery use.

[0024] A cooling fan 8 is also installed inside the battery box body 1 and is located on one side of the battery module 4. The cooling fan 8 dissipates heat from the battery interior. A ventilation valve 12 is also provided on the box cover 2, with the bottom end of the ventilation valve 12 located inside the battery box body 1. The ventilation valve 12 dissipates heat from the battery interior to prevent overheating.

[0025] A power plate 13 is installed on one side of the reinforcing beam frame 3, and the power plate 13 is electrically connected to the battery module 4. Two busbars 14 are connected to one side of the power plate 13. Two connecting poles 15 are provided on the box cover 2. The two connecting poles 15 are electrically connected to the two busbars 14 respectively. The two connecting poles 15 are connected by wires to connect the battery to external electrical devices, thereby providing electrical energy to the external electrical devices. The outside of the battery module 4 is sequentially provided with a PI heating film 9, a thermally conductive silicone sheet 10, and an epoxy plate 11. When the weather is cold, the PI heating film 9 can be used to preheat the battery, and the thermally conductive silicone sheet 10 can make the heat inside the battery evenly distributed, thereby improving the preheating efficiency. The epoxy plate 11 can block heat to prevent heat loss from the thermally conductive silicone sheet 10.

[0026] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A 24V lithium-ion battery, characterized in that: The invention comprises a battery box body (1), wherein a box cover (2) is provided at the upper end of the battery box body (1), a reinforcing beam frame (3) is provided in the battery box body (1), a battery module (4) is provided on the inner side of the reinforcing beam frame (3), a pressure strip (5) is fixed at the lower end of the box cover (2), and the pressure strip (5) is located above the battery module (4), an upper end buffer foam (6) and a lower end buffer foam (7) are provided in the battery box body (1), the two ends of the upper end buffer foam (6) are respectively fitted with the lower end of the pressure strip (5) and the upper end of the battery module (4), and the two ends of the lower end buffer foam (7) are respectively fitted with the lower end of the battery module (4) and the inner bottom of the battery box body (1), and a cooling fan (8) is also installed on the inner side of the battery box body (1), and the cooling fan (8) is located on one side of the battery module (4).

2. A 24V lithium-ion battery according to claim 1, characterized in that: The outer side of the battery module (4) is provided with a PI heating film (9), a heat-conducting silicone sheet (10) and an epoxy plate (11) in sequence.

3. A 24V lithium-ion battery according to claim 2, characterized in that: A vent valve (12) is also provided on the box cover (2), and the bottom end of the vent valve (12) is located inside the battery box body (1).

4. A 24V lithium-ion battery according to claim 3, characterized in that: A power plate (13) is installed on one side of the reinforcing beam frame (3), and the power plate (13) is electrically connected to the battery module (4). Two busbars (14) are connected to one side of the power plate (13). Two connecting pole seats (15) are provided on the box cover (2), and the two connecting pole seats (15) are electrically connected to the two busbars (14) respectively.

5. A 24V lithium-ion battery according to claim 4, characterized in that: The box cover (2) is provided with a plurality of rivet nuts (16), the lower ends of the plurality of rivet nuts (16) are respectively provided in the battery box body (1), and the box cover (2) and the battery box body (1) are fixedly connected via the plurality of rivet nuts (16), and a waterproof gasket (17) is further provided between the battery box body (1) and the box cover (2).

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