A waterproof and heat dissipation type iron lithium battery module for an electric motorcycle

Abstract

The application relates to a waterproof heat dissipation type iron lithium battery module for an electric motorcycle and relates to the technical field of power batteries of electric motorcycles. The waterproof heat dissipation type iron lithium battery module for an electric motorcycle comprises an aluminum alloy shell, a plastic sealing shell is fixedly connected to the inner bottom wall of the aluminum alloy shell, and an iron lithium battery body is arranged in the aluminum alloy shell. When the iron lithium battery body generates heat, the heat is transmitted to the plastic sealing shell through the heat-conducting silica gel pad, the heat passes through the channel between the aluminum alloy shell and the plastic sealing shell at this time, then the heat rises to the sealing plate through the flow guide fins, and finally the heat is transmitted out through the waterproof breathing valve. The device can realize efficient waterproofing through the double-layer design of the aluminum alloy shell and the plastic sealing shell and the waterproof breathing valve, avoid water short circuit of the iron lithium battery body, and set the flow guide fins to guide airflow, so that the natural heat dissipation effect is enhanced, the temperature rise of the iron lithium battery body is reduced, and the service life of the iron lithium battery body is prolonged.

Description

Technical Field

[0001] This application relates to the field of electric motorcycle power battery technology, and in particular to a waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles. Background Technology

[0002] Electric motorcycles are two- or three-wheeled motor vehicles powered by batteries and driven by motors. Their core components include electric drive and control systems, and mechanical transmission devices. The maximum design speed usually exceeds 50 km / h. A driver's license and license plate are required to drive on the road. Due to their environmentally friendly and convenient features, electric motorcycles have gradually become an important tool for short-distance urban travel. However, the waterproofing and heat dissipation of their power batteries have always been technical challenges. Lithium iron phosphate batteries are widely used due to their high energy density and long cycle life, but they generate a lot of heat during charging and discharging. Insufficient heat dissipation can lead to battery performance degradation or even thermal runaway.

[0003] However, in existing technologies, lithium iron phosphate batteries are mostly designed to be completely sealed, with the battery casing completely enclosed by rubber gaskets and glue. However, the completely sealed design results in poor heat dissipation performance, which leads to increased battery temperature and makes it difficult to meet the requirements of heat dissipation and waterproofing. Utility Model Content

[0004] The purpose of this application is to provide a waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles. It has the advantages of achieving efficient waterproofing through a double-layer design and a waterproof breather valve, preventing water ingress and short circuits in the lithium iron phosphate battery body, and setting guide fins to guide airflow, which can enhance the natural heat dissipation effect, reduce the temperature rise of the lithium iron phosphate battery body, and extend its service life, thus solving the problems mentioned in the background art.

[0005] This application provides a waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles, employing the following technical solution: It includes an aluminum alloy casing, with a plastic sealing shell fixedly connected to the inner bottom wall of the aluminum alloy casing. A lithium iron phosphate battery body is disposed inside the aluminum alloy casing, and a thermally conductive silicone pad is attached to the outer surface of the lithium iron phosphate battery body. The outer surface of the thermally conductive silicone pad is fixedly installed to the inner wall of the plastic sealing shell. Equally spaced flow-guiding fins are fixedly connected to the inner side wall of the aluminum alloy casing, and the outer surface of each flow-guiding fin is fixedly connected to the outer surface of the plastic sealing shell. A sealing plate is provided above the aluminum alloy casing, and two waterproof breather valves are fixedly installed on the upper surface of the sealing plate.

[0006] By adopting the above technical solution, a plastic sealing shell is installed on the inner bottom wall of the aluminum alloy shell, forming a channel between the aluminum alloy shell and the plastic sealing shell. The lithium iron phosphate battery body is placed inside the aluminum alloy shell, and a thermally conductive silicone pad is attached to the outer surface of the lithium iron phosphate battery body. The thermally conductive silicone pad is fixed to the plastic sealing shell, allowing the aluminum alloy shell and the plastic sealing shell to hold the lithium iron phosphate battery body. The thermally conductive silicone pad conducts the heat generated by the lithium iron phosphate battery body to the plastic sealing shell, and then the plastic sealing shell dissipates the heat within the channel between the aluminum alloy shell and the plastic sealing shell. Guide fins are installed between the aluminum alloy shell and the plastic sealing shell, and the surface of the guide fins is fixed to the inner wall of the aluminum alloy shell and the outer surface of the plastic sealing shell, allowing multiple guide fins to... The channel between the aluminum alloy shell and the plastic sealing shell is divided into multiple guide grooves, allowing heat to move through the guide grooves formed between the guide fins. A sealing plate is placed above the aluminum alloy shell, and two waterproof breather valves are installed on the upper surface of the sealing plate. The sealing plate and the waterproof breather valves are fixed to achieve the installation of the waterproof breather valves. When heat moves to the position of the sealing plate through the guide grooves between the guide fins, it is finally discharged through the waterproof breather valves. This device can achieve efficient waterproofing through the double-layer design of the aluminum alloy shell and the plastic sealing shell and the waterproof breather valves, preventing water ingress and short circuit of the lithium iron phosphate battery body. Furthermore, by setting the guide fins to guide the airflow, the natural heat dissipation effect can be enhanced, reducing the temperature rise of the lithium iron phosphate battery body and extending the service life of the lithium iron phosphate battery body.

[0007] Preferably, a positioning element is fixedly connected to the bottom surface of the sealing plate, and the outer surface of the positioning element is slidably connected to the inner wall of the aluminum alloy shell.

[0008] By adopting the above technical solution, the positioning component is installed on the bottom surface of the sealing plate and set as a fixed connection, so that when the operator moves the sealing plate, the positioning component can be moved. The positioning component is connected to the inner wall of the aluminum alloy shell and set as a sliding connection, so that when the sealing plate is connected to the aluminum alloy shell, the positioning and installation of the sealing plate can be achieved through the connection between the positioning component and the groove on the surface of the aluminum alloy shell.

[0009] Preferably, the inner wall of the aluminum alloy housing is fixedly installed with fixing screws arranged at equal intervals, and each fixing screw is fixedly installed with the inner wall of the positioning member.

[0010] By adopting the above technical solution, fixing screws are installed on the inner wall of the aluminum alloy shell and connected to the positioning component. After the sealing plate and the positioning component are installed in place, the positioning component can be fixed to the aluminum alloy shell by setting multiple fixing screws. This allows the sealing plate and the waterproof breather valve to be installed on the upper surface of the aluminum alloy shell, thus realizing the installation of the sealing plate and the waterproof breather valve.

[0011] Preferably, a fixing block is fixedly installed on the upper surface of the sealing plate, and a pull ring is rotatably connected to the inner wall of the fixing block.

[0012] By adopting the above technical solution, the fixing block is installed on the upper surface of the sealing plate and fixed with screws, so that the fixing block can be fixed on the surface of the sealing plate. The pull ring is set on the inner wall of the fixing block and set as a rotatable connection, so that the fixing block can limit the pull ring.

[0013] Preferably, the outer surface of the pull ring is rotatably connected with a rubber sleeve.

[0014] By adopting the above technical solution, the rubber sleeve is installed on the outer surface of the pull ring and set as a rotating connection. When the operator needs to take the whole aluminum alloy shell and the internal lithium iron phosphate battery body, the pull ring can be used as a handle through the connection between the fixing block and the pull ring. The rubber sleeve can prevent the pull ring from hurting the hand too much and make it easier for the operator to carry the whole device.

[0015] Preferably, a fixing ring is fixedly connected to the inner wall of the aluminum alloy shell, and a limiting groove is formed on the upper surface of the fixing ring.

[0016] By adopting the above technical solution, the fixing ring is installed on the inner wall of the aluminum alloy shell, and the fixing ring and the aluminum alloy shell are fixed to achieve the installation of the fixing ring. The limiting groove is opened on the upper surface of the fixing ring to achieve the positioning of the limiting groove.

[0017] Preferably, the inner wall of the limiting groove is slidably connected to a limiting seat, and a sealing strip is fixedly connected to the upper surface of the limiting seat.

[0018] By adopting the above technical solution, the limiting seat is set on the inner wall of the limiting groove, and the limiting groove and the limiting seat are set as a sliding connection to realize the limiting of the limiting seat. The sealing strip is installed on the upper surface of the limiting seat. When the sealing plate is installed with the aluminum alloy shell, the sealing strip can be tightly attached to the bottom surface of the sealing plate, thereby achieving a sealing effect.

[0019] Preferably, the bottom surface of the limiting seat is fixedly connected with springs arranged at equal intervals, and the bottom end of each spring is fixedly connected to the inner bottom wall of the limiting groove.

[0020] By adopting the above technical solution, the spring is installed on the bottom surface of the limiting seat, and the bottom end of the spring is fixed to the inner bottom wall of the limiting groove. This allows the limiting seat to be pressed tightly by the spring. When installing the sealing plate, the sealing plate first contacts the sealing strip, and then the sealing plate is pressed down to make the sealing strip and the limiting seat slide down, so that the spring can be compressed. When the sealing plate is installed in place, the sealing strip can be tightly attached to the bottom surface of the sealing plate under the action of the spring, improving the sealing performance after the sealing plate is installed and preventing water from entering the interior of the aluminum alloy shell.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles utilizes components such as an aluminum alloy casing, a plastic sealing shell, and a waterproof breather valve. When the lithium iron phosphate battery generates heat, the heat is transferred to the plastic sealing shell through a thermally conductive silicone pad. The heat exists in the channel between the aluminum alloy casing and the plastic sealing shell, then rises to the sealing plate through guide fins, and finally escapes through the waterproof breather valve. This device achieves highly efficient waterproofing through the double-layer design of the aluminum alloy casing and plastic sealing shell and the waterproof breather valve, preventing water ingress and short circuits in the lithium iron phosphate battery. Furthermore, the guide fins direct airflow, increasing... The strong natural heat dissipation effect reduces the temperature rise of the lithium iron phosphate battery body and extends its service life. When installing the sealing plate and waterproof breather valve, the operator first moves the sealing plate, which in turn moves the positioning component. At this time, the positioning component is connected to the aluminum alloy shell, and the sealing plate can be fixed by fixing screws. At this time, the sealing plate presses down on the sealing strip, and because a spring is set between the limit seat and the limit groove, the spring can press against the limit seat and the sealing strip, so that the sealing strip can fit tightly with the positioning component, thereby improving the sealing performance after the sealing plate is installed and preventing water from entering the interior of the aluminum alloy shell. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the entire application in three dimensions; Figure 2 This is a schematic diagram of the overall front view of this application; Figure 3 This is a schematic diagram of the connection relationship between the aluminum alloy shell and the guide fins in this application; Figure 4 This is a schematic diagram showing the connection between the limiting seat and the spring in this application; Figure 5 This is a schematic diagram showing the connection between the plastic sealing shell and the thermally conductive silicone pad in this application.

[0023] In the picture: 1. Aluminum alloy shell; 2. Plastic sealing shell; 3. Lithium iron phosphate battery body; 4. Thermally conductive silicone pad; 5. Guide fins; 6. Sealing plate; 7. Waterproof breather valve; 8. Positioning component; 9. Fixing screw; 10. Fixing block; 11. Pull ring; 12. Rubber sleeve; 13. Fixing ring; 14. Limiting groove; 15. Limiting seat; 16. Sealing strip; 17. Spring. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0025] Example 1: A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles. Please refer to [link / reference]. Figure 1 , Figure 3 and Figure 5 The system includes an aluminum alloy casing 1, with a plastic sealing shell 2 fixedly connected to the inner bottom wall of the aluminum alloy casing 1. The plastic sealing shell 2 is installed on the inner bottom wall of the aluminum alloy casing 1, so that a channel can be formed between the aluminum alloy casing 1 and the plastic sealing shell 2. A lithium iron phosphate battery body 3 is disposed inside the aluminum alloy casing 1. A thermally conductive silicone pad 4 is attached to the outer surface of the lithium iron phosphate battery body 3. The outer surface of the thermally conductive silicone pad 4 is fixedly installed to the inner wall of the plastic sealing shell 2. The lithium iron phosphate battery body 3 is placed inside the aluminum alloy casing 1, and the thermally conductive silicone pad 4 is attached to the outer surface of the lithium iron phosphate battery body 3. The thermally conductive silicone pad 4 is fixed to the plastic sealing shell 2, so that the aluminum alloy casing 1 and the plastic sealing shell 2 can hold the lithium iron phosphate battery body 3. The heat generated by the lithium iron phosphate battery body 3 can be conducted to the plastic sealing shell 2 by the thermally conductive silicone pad 4, and then the heat is dissipated in the channel between the aluminum alloy casing 1 and the plastic sealing shell 2 through the plastic sealing shell 2.

[0026] Please see Figure 1 , Figure 3 and Figure 5The inner wall of the aluminum alloy shell 1 is fixedly connected with equidistantly arranged guide fins 5. The outer surface of each guide fin 5 is fixedly connected to the outer surface of the plastic sealing shell 2. The guide fins 5 are positioned between the aluminum alloy shell 1 and the plastic sealing shell 2, fixing the surface of the guide fins 5 to the inner wall of the aluminum alloy shell 1 and the outer surface of the plastic sealing shell 2. This allows multiple guide fins 5 to divide the channel between the aluminum alloy shell 1 and the plastic sealing shell 2 into multiple guide grooves, thereby allowing heat to move through the guide grooves formed between the guide fins 5. A sealing plate 6 is provided above the aluminum alloy shell 1, and two waterproof breather valves 7 are fixedly installed on the upper surface of the sealing plate 6. A sealing plate 6 is positioned above the aluminum alloy shell 1, and two waterproof breather valves 7 are installed on the upper surface of the sealing plate 6. The sealing plate 6 and the waterproof breather valves 7 are fixed together to achieve the installation of the waterproof breather valves 7. When heat moves to the position of the sealing plate 6 through the guide groove between the guide fins 5 and the guide fins 5, it is finally discharged through the waterproof breather valves 7. This allows the device to achieve efficient waterproofing through the double-layer design of the aluminum alloy shell 1 and the plastic sealing shell 2 and the waterproof breather valves 7, preventing water ingress and short circuit of the lithium iron phosphate battery body 3. Furthermore, by setting the guide fins 5 to guide the airflow, the natural heat dissipation effect can be enhanced, the temperature rise of the lithium iron phosphate battery body 3 can be reduced, and the service life of the lithium iron phosphate battery body 3 can be extended.

[0027] Example 2: A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 A positioning element 8 is fixedly connected to the bottom surface of the sealing plate 6. The outer surface of the positioning element 8 is slidably connected to the inner wall of the aluminum alloy shell 1. The positioning element 8 is installed on the bottom surface of the sealing plate 6 and is set as a fixed connection so that when the operator moves the sealing plate 6, the positioning element 8 can be moved. The positioning element 8 is connected to the inner wall of the aluminum alloy shell 1 and is set as a sliding connection so that when the sealing plate 6 is connected to the aluminum alloy shell 1, the positioning of the sealing plate 6 can be achieved through the connection between the positioning element 8 and the groove on the surface of the aluminum alloy shell 1. The inner wall of the aluminum alloy shell 1 is fixedly installed with equidistant fixing screws 9. Each fixing screw 9 is fixedly installed to the inner wall of the positioning element 8. The fixing screws 9 are installed on the inner wall of the aluminum alloy shell 1 and connected to the positioning element 8 so that after the sealing plate 6 and the positioning element 8 are installed in place, the positioning element 8 can be fixed to the aluminum alloy shell 1 by setting multiple fixing screws 9. Thus, the sealing plate 6 and the waterproof breather valve 7 can be installed on the upper surface of the aluminum alloy shell 1, realizing the installation of the sealing plate 6 and the waterproof breather valve 7.

[0028] Please see Figure 1 , Figure 2 and Figure 3A fixing block 10 is fixedly installed on the upper surface of the sealing plate 6. A pull ring 11 is rotatably connected to the inner wall of the fixing block 10. The fixing block 10 is installed on the upper surface of the sealing plate 6 and fixed with screws so that the fixing block 10 can be fixed to the surface of the sealing plate 6. The pull ring 11 is set on the inner wall of the fixing block 10 and is set as a rotatable connection so that the fixing block 10 can limit the pull ring 11. A rubber sleeve 12 is rotatably connected to the outer surface of the pull ring 11. The rubber sleeve 12 is installed on the outer surface of the pull ring 11 and is set as a rotatable connection. When the operator needs to pick up the overall aluminum alloy shell 1 and the internal lithium iron phosphate battery body 3, the pull ring 11 can be used as a handle through the connection between the fixing block 10 and the pull ring 11. The rubber sleeve 12 can prevent the pull ring 11 from being too tight on the hand and make it easier for the operator to carry the whole device.

[0029] Please see Figure 3 and Figure 4 A fixing ring 13 is fixedly connected to the inner wall of the aluminum alloy shell 1. A limiting groove 14 is formed on the upper surface of the fixing ring 13. The fixing ring 13 is installed on the inner wall of the aluminum alloy shell 1, and the fixing ring 13 and the aluminum alloy shell 1 are fixed together to achieve the installation of the fixing ring 13. The limiting groove 14 is formed on the upper surface of the fixing ring 13 to achieve the positioning of the limiting groove 14. A limiting seat 15 is slidably connected to the inner wall of the limiting groove 14. A sealing strip 16 is fixedly connected to the upper surface of the limiting seat 15. The limiting seat 15 is set on the inner wall of the limiting groove 14, and the limiting groove 14 and the limiting seat 15 are slidably connected to achieve the limiting of the limiting seat 15. The sealing strip 16 is installed on the upper surface of the limiting seat 15. When the sealing plate 6 is installed with the aluminum alloy shell 1, the sealing strip 16 can tightly... The bottom surface of the sealing plate 6 is attached to achieve a sealing effect. The bottom surface of the limiting seat 15 is fixedly connected with springs 17 arranged at equal intervals. The bottom end of each spring 17 is fixedly connected to the inner bottom wall of the limiting groove 14. The springs 17 are installed on the bottom surface of the limiting seat 15 and the bottom ends of the springs 17 are fixed to the inner bottom wall of the limiting groove 14, so that the limiting seat 15 can be pressed by the springs 17. When installing the sealing plate 6, the sealing plate 6 first contacts the sealing strip 16, and then the sealing plate 6 is pressed so that the sealing strip 16 and the limiting seat 15 slide down, so that the springs 17 can be compressed. When the sealing plate 6 is installed in place, the sealing strip 16 can be tightly attached to the bottom surface of the sealing plate 6 under the action of the springs 17, improving the sealing performance of the sealing plate 6 after installation and preventing water from entering the interior of the aluminum alloy shell 1.

[0030] It should be noted that one set of guide fins 5 is attached to the inner wall of the aluminum alloy shell 1 and the outer surface of the plastic sealing shell 2, while the other set of guide fins 5 is long and strip-shaped, also attached to the inner wall of the aluminum alloy shell 1 and the outer surface of the plastic sealing shell 2, so that each guide fin 5 can be adapted to the aluminum alloy shell 1 and the plastic sealing shell 2.

[0031] The implementation principle of this application embodiment is as follows: First, the lithium iron phosphate battery body 3 is installed inside the plastic sealing shell 2. Then, the sealing plate 6 is moved to drive the waterproof breather valve 7. The sealing plate 6 is positioned by connecting the positioning part 8 to the aluminum alloy shell 1. The sealing plate 6 and the waterproof breather valve 7 can be installed by installing the fixing screws 9. When the sealing plate 6 is installed in place, the sealing plate 6 presses down the sealing strip 16. The spring 17 is set to tighten the limiting seat 15, so that the sealing strip 16 can be tightened, thereby making the sealing strip 16 fit tightly with the sealing plate 6. This improves the sealing performance of the sealing plate 6 after installation and prevents water from entering the interior of the aluminum alloy shell 1. When the main body 3 generates heat, the heat is transferred through the thermally conductive silicone pad 4, then to the plastic sealing shell 2. The heat then enters the space between the aluminum alloy shell 1 and the plastic sealing shell 2. Multiple guide fins 5 are installed between the aluminum alloy shell 1 and the plastic sealing shell 2, allowing the heat to rise through the flow channels formed between the guide fins 5 and then be discharged through the waterproof breather valve 7. This allows the device to achieve efficient waterproofing through the double-layer design of the aluminum alloy shell 1 and the plastic sealing shell 2, preventing water ingress and short circuits in the lithium iron phosphate battery main body 3. Furthermore, the guide fins 5 guide the airflow, enhancing natural heat dissipation, reducing the temperature rise of the lithium iron phosphate battery main body 3, and extending its service life.

Claims

1. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles, comprising an aluminum alloy casing (1), characterized in that: A plastic sealing shell (2) is fixedly connected to the inner bottom wall of the aluminum alloy shell (1). A lithium iron phosphate battery body (3) is installed inside the aluminum alloy shell (1). A thermally conductive silicone pad (4) is attached to the outer surface of the lithium iron phosphate battery body (3). The outer surface of the thermally conductive silicone pad (4) is fixedly installed to the inner wall of the plastic sealing shell (2). Equally spaced flow guide fins (5) are fixedly connected to the inner side wall of the aluminum alloy shell (1). The outer surface of each flow guide fin (5) is fixedly connected to the outer surface of the plastic sealing shell (2). A sealing plate (6) is provided above the aluminum alloy shell (1). Two waterproof breathing valves (7) are fixedly installed on the upper surface of the sealing plate (6).

2. The waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 1, characterized in that: The bottom surface of the sealing plate (6) is fixedly connected to a positioning element (8), and the outer surface of the positioning element (8) is slidably connected to the inner wall of the aluminum alloy shell (1).

3. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 2, characterized in that: The inner wall of the aluminum alloy housing (1) is fixedly installed with fixing screws (9) arranged at equal intervals, and each fixing screw (9) is fixedly installed with the inner wall of the positioning member (8).

4. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 1, characterized in that: A fixing block (10) is fixedly installed on the upper surface of the sealing plate (6), and a pull ring (11) is rotatably connected to the inner wall of the fixing block (10).

5. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 4, characterized in that: A rubber sleeve (12) is rotatably connected to the outer surface of the pull ring (11).

6. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 1, characterized in that: The inner wall of the aluminum alloy shell (1) is fixedly connected to a fixing ring (13), and a limiting groove (14) is opened on the upper surface of the fixing ring (13).

7. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 6, characterized in that: The inner wall of the limiting groove (14) is slidably connected to the limiting seat (15), and the upper surface of the limiting seat (15) is fixedly connected to the sealing strip (16).

8. A waterproof and heat-dissipating lithium iron phosphate battery module for electric motorcycles according to claim 7, characterized in that: The bottom surface of the limiting seat (15) is fixedly connected with springs (17) arranged at equal intervals, and the bottom end of each spring (17) is fixedly connected to the inner bottom wall of the limiting groove (14).

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