Graphene heating sheet for charging and preheating lithium battery pack of two-wheeled vehicle

Abstract

The graphene heating sheet comprises a supporting frame and a plurality of heating assemblies, the supporting frame is arranged in a concave shape, the heating assemblies are installed on the inner side of the supporting frame at equal intervals, and the inner side of the supporting frame is divided into a plurality of installation areas by the heating assemblies. The lithium battery pack body is installed in the corresponding installation area, the heating assembly comprises an installation frame and a graphene heating sheet body used for heating the lithium battery pack body before the lithium battery pack body is charged, and the graphene heating sheet body is fixedly installed on the inner side of the installation frame. According to the utility model, the lithium battery pack body can be preheated before being charged through the arranged supporting frame and the plurality of heating assemblies, so that a guarantee is provided for charging the lithium battery pack body in a low-temperature environment, and the lithium battery pack body can be normally used in the low-temperature and cold environment; and the service life of the lithium battery pack body in a low-temperature environment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pack charging preheating, and particularly relates to a graphene heating sheet for charging preheating of a lithium battery pack of a two-wheeled vehicle. Background Art

[0002] Electric two-wheeled vehicles are collectively referred to as two-wheeled electric bicycles, electric motorcycles, and electric moped motorcycles. Among them, lithium batteries are an important part of electric two-wheeled vehicles. Lithium batteries are commonly used as the storage batteries of two-wheeled electric motorcycles due to their characteristics such as long life, large capacity, and high temperature resistance. A charging port for charging the storage battery is provided on the surface of the vehicle body. Generally, the storage battery is installed in the battery compartment under the pedal of the electric motorcycle.

[0003] The working principle of a lithium-ion battery is essentially an oxidation-reduction reaction between the internal positive and negative electrodes and the electrolyte. At low temperatures, the lithium intercalation reaction rate of the active substances on the electrode surface slows down, and the concentration of lithium ions inside the active substances decreases. This will cause the battery equilibrium potential to decrease, the internal resistance to increase, and the discharge capacity to decrease. In extreme low-temperature situations, phenomena such as electrolyte freezing and the battery being unable to discharge may even occur, greatly affecting the low-temperature performance of the battery system and causing the power output performance of the electric vehicle to decay and the cruising range to decrease.

[0004] In addition, charging in a low-temperature environment easily forms lithium deposition on the surface of the negative electrode. The accumulation of metallic lithium on the negative electrode surface will pierce the battery diaphragm, causing a short circuit between the positive and negative electrodes of the battery and threatening the safety of battery use.

[0005] There is no structure for preheating the storage battery before charging on existing two-wheeled electric vehicles, which greatly reduces the service life of lithium batteries in cold regions.

[0006] Therefore, we propose a graphene heating sheet for charging preheating of a lithium battery pack of a two-wheeled vehicle. Content of the Utility Model

[0007] The purpose of the utility model is to provide a graphene heating sheet for charging preheating of a lithium battery pack of a two-wheeled vehicle, thereby solving or at least alleviating one or more of the above problems and other problems existing in the prior art.

[0008] To achieve the above purpose, the main technical solutions adopted by the utility model include:

[0009] A graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler, comprising a support frame and a plurality of heating components arranged in a battery compartment of a two-wheeled electric motorcycle. The support frame is arranged in a concave shape, and the plurality of heating components are equidistantly installed on the inner side of the support frame. The plurality of heating components divide the inner side of the support frame into a plurality of installation areas, and the lithium battery pack body is installed in the corresponding installation area. The heating component includes an installation frame and a graphene heating sheet body for heating the lithium battery pack body before charging the lithium battery pack body. The graphene heating sheet body is fixedly installed on the inner side of the installation frame.

[0010] In a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler according to the present invention, a protective partition net is arranged on a side surface of the graphene heating sheet body close to the lithium battery pack body, and the protective partition net is fixedly installed on the installation frame by screws.

[0011] In a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler according to the present invention, a plurality of slots are fixedly welded to the upper and lower ends of the opposite inner side surfaces of the support frame, and the installation frame is inserted into the slots.

[0012] In a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler according to the present invention, an assembly groove is formed at the top of one end of the installation frame, a connecting rod is slidably arranged inside the assembly groove, the lower end of the connecting rod slidably passes through the bottom of the assembly groove and is fixedly connected with a limiting block, the upper end of the connecting rod is fixedly connected with a limiting annular block, a spring is sleeved on the connecting rod, the top of the spring abuts against the bottom of the limiting annular block, the bottom of the spring presses against the bottom of the assembly groove, a transverse through groove and a longitudinal clamping groove are formed on one side of the slot, the bottom of the longitudinal clamping groove is communicated with the top of the transverse through groove, and after the limiting block is screwed into the transverse through groove, it can be clamped into the longitudinal clamping groove by the elastic force of the spring.

[0013] In a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler according to the present invention, a handle is fixedly connected to the top of the connecting rod.

[0014] In a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeler according to the present invention, the support frame is an aluminum alloy pipe frame or a galvanized frame.

[0015] The present invention has at least the following beneficial effects:

[0016] (1) The utility model can preheat the lithium battery pack body through the arranged support frame and several heating components before charging the lithium battery pack body, providing guarantee for charging the lithium battery pack body in a low-temperature environment, enabling the lithium battery pack body to be normally used in a low-temperature and cold environment, and prolonging the service life of the lithium battery pack body in a low-temperature environment.

[0017] (2) Through the arranged connecting rod, limiting block, spring, limiting annular block, slot and transverse through groove, the quick disassembly and assembly between the installation frame and the support frame can be realized, facilitating the quick maintenance and replacement of the damaged graphene heating sheet body. Description of the Drawings

[0018] The drawings described herein are used to provide a further understanding of the present application, form a part of the present application, and the schematic embodiments and descriptions thereof are used to explain the present application, and do not constitute an improper limitation to the present application. In the drawings:

[0019] Figure 1 It is a partial explosion structure schematic diagram of the utility model;

[0020] Figure 2 is Figure 1 an enlarged structure schematic diagram of part A in

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

[0022] Figure 4 It is a structure schematic diagram of the support frame in the utility model;

[0023] Figure 5 is Figure 4 an enlarged structure schematic diagram of part B in

[0024] Figure 6 It is a partial sectional structure schematic diagram of the installation frame in the utility model;

[0025] Figure 7 It is a structure schematic diagram of the utility model in the use state.

[0026] Explanation of the Reference Numerals in the Drawings:

[0027] 1. Installation frame; 101. Assembly groove; 2. Graphene heating sheet body; 3. Protective partition net; 4. Support frame; 401. Slot; 402. Transverse through groove; 404. Longitudinal card slot; 5. Spring; 6. Lithium battery pack body; 7. Connecting rod; 8. Limiting block; 9. Handle; 10. Limiting annular block. Detailed Embodiments

[0028] The following will elaborate on the implementation mode of this application in conjunction with the attached drawings and embodiments, so as to fully understand how this application uses technical means to solve technical problems and achieve the implementation process of technical effects and implement it accordingly.

[0029] As Figure 1-7 shown, a graphene heating sheet for charging and preheating a lithium battery pack of a two-wheeled vehicle includes a support frame 4 and a plurality of heating components arranged in the battery compartment of a two-wheeled electric motorcycle. The support frame 4 is arranged in a concave shape, and a plurality of heating components are equidistantly installed inside the support frame 4. The plurality of heating components divide the inside of the support frame 4 into a plurality of installation areas, and the lithium battery pack body 6 is installed in the corresponding installation area. The heating component includes an installation frame 1 and a graphene heating sheet body 2 for heating the lithium battery pack body 6 before charging the lithium battery pack body 6. The graphene heating sheet body 2 is fixedly installed inside the installation frame 1. At the upper and lower ends of the opposite inner sides of the support frame 4, a plurality of slots 401 are fixedly welded, and the installation frame 1 is inserted into the slots 401.

[0030] By adopting the above technical solution, during installation, first place the support frame 4 into the battery compartment of the two-wheeled electric motorcycle, then respectively place a plurality of lithium battery pack bodies 6 into their corresponding installation areas, and then insert the installation frame 1 equipped with the graphene heating sheet body 2 into the slot 401, so that the graphene heating sheet body 2 is inserted into the gap between two lithium battery pack bodies 6. Before charging the lithium battery pack body 6, turn on the graphene heating sheet body 2 to quickly raise the temperature inside the battery compartment, thereby quickly raising the temperature of the electrolyte inside the lithium battery pack body 6.

[0031] Furthermore, in order to facilitate the disassembly and assembly of the installation frame 1 and the support frame 4, an assembly groove 101 is opened at the top of one end of the installation frame 1. A connecting rod 7 is slidably arranged inside the assembly groove 101. The lower end of the connecting rod 7 slides out of the bottom of the assembly groove 101 and is fixedly connected with a limiting block 8. The upper end of the connecting rod 7 is fixedly connected with a limiting annular block 10. A spring 5 is sleeved on the connecting rod 7. The top of the spring 5 abuts against the bottom of the limiting annular block 10, and the bottom of the spring 5 presses against the bottom of the assembly groove 101. A transverse through groove 402 and a longitudinal card slot 403 are opened on one side of the slot 401. The bottom of the longitudinal card slot 403 is connected to the top of the transverse through groove 402. After the limiting block 8 is screwed into the transverse through groove 402, it can be snapped into the longitudinal card slot 403 by the elastic force of the spring 5.

[0032] By adopting the above technical solution, during installation, after inserting the installation frame 1 into the slot 401, then press down the connecting rod 7 so that the limiting block 8 is on one side of the horizontal through groove 402, and then rotate the connecting rod 7 to screw the limiting block 8 into the horizontal through groove 402. At this time, the spring 5 is compressed. When the limiting block 8 rotates to the bottom of the longitudinal card slot 403, release the connecting rod 7. At this time, the limiting block 8 is snapped into the longitudinal card slot 403 under the elastic force of the spring 5, and thus the installation of the installation frame 1 is completed.

[0033] Furthermore, in order to prevent the lithium battery pack body 6 from colliding with the graphene heating sheet body 2, a protective mesh 3 is provided on the side surface of the graphene heating sheet body 2 close to the lithium battery pack body 6, and the protective mesh 3 is fixedly installed on the installation frame 1 by screws.

[0034] Furthermore, in order to facilitate the rotation of the connecting rod 7, a handle 9 is fixedly connected to the top of the connecting rod 7.

[0035] Furthermore, in order to ensure the support strength of the support frame 4, the support frame 4 is an aluminum alloy pipe frame or a galvanized frame.

[0036] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention shall fall within the protection scope of the appended claims of the present invention.

Claims

1. A graphene heating sheet for charging and preheating a lithium battery pack for a two-wheeled vehicle, characterized in that: The invention comprises a support frame and a plurality of heating components arranged in a battery compartment of a two-wheeled electric motorcycle, wherein the support frame is arranged in a concave shape, and a plurality of the heating components are equidistantly arranged on the inner side of the support frame, and the plurality of the heating components divide the inner side of the support frame into a plurality of installation areas, and the lithium battery pack body is arranged in the corresponding installation areas; The heating assembly includes a mounting frame and a graphene heating sheet body for heating the lithium battery pack body before charging the lithium battery pack body, and the graphene heating sheet body is fixedly mounted on the inner side of the mounting frame; A protective screen is provided on one side of the graphene heating sheet body close to the lithium battery pack body, and the protective screen is fixedly mounted on the mounting frame by screws. A plurality of slots are fixedly welded on the upper and lower ends of the inner side surfaces opposite to the support frame, and the mounting frame is plugged into the slots; An assembly groove is provided at the top of one end of the mounting frame, and a connecting rod is slidably arranged inside the assembly groove. The lower end of the connecting rod slides out of the bottom of the assembly groove and is fixedly connected to a limiting block. The upper end of the connecting rod is fixedly connected to a limiting annular block. A spring is sleeved on the connecting rod, and the top of the spring is against the bottom of the limiting annular block. The bottom of the spring is pressed against the bottom of the assembly groove. A transverse through groove and a longitudinal clamping groove are provided on one side of the slot, and the bottom of the longitudinal clamping groove is connected to the top of the transverse through groove. After the limiting block is screwed into the transverse through groove, it can be clamped in the longitudinal clamping groove by the elastic force of the spring.

2. A graphene heating sheet for charging and preheating a lithium battery pack for a two-wheeled vehicle according to claim 1, characterized in that: The top of the connecting rod is fixedly connected with a handle.

3. A graphene heating sheet for charging and preheating a lithium battery pack for a two-wheeled vehicle according to any one of claims 1-2, characterized in that: The support frame is one of an aluminum alloy tube frame and a galvanized frame.

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