Power battery structure of electric motorcycle

Abstract

The utility model discloses a power battery structure of an electric motorcycle, which relates to the technical field of power batteries and comprises a portable handle, a base unit is arranged on the bottom surface of the portable handle, and a top cover unit is arranged on the top surface of the base unit. The base unit comprises a plastic insulation shell fixedly installed on the bottom face of the portable handle, a battery cell movably installed in the plastic insulation shell, and a heating wire movably installed on the side face of the plastic insulation shell and used for heating. Ten battery cells 35 are used as unit groups, the battery cells in the unit groups are connected through series aluminum bars 36, double heat insulation protection is realized through heat insulation pads 38, two groups of units form a series structure through bridging aluminum bars 39, finally, the series structure extends to an external power supply port from positive and negative aluminum bars 37, and a heating wire 33 is positioned through a fixed outer film 32, so that the heating wire 33 is fixed to the external power supply port. The battery module is tightly attached to the surfaces of the two sides of the battery cell 35, and the whole module is packaged in a plastic insulating shell 31, so that a heating system can dynamically maintain the optimal working temperature interval of the battery cell 35, and the service life of the battery is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power battery technology, specifically to a power battery structure for an electric motorcycle. Background Technology

[0002] Electric motorcycles are two-wheeled motor vehicles that use electric motors as power sources and batteries as energy storage devices. They have the structure and riding experience of traditional motorcycles, and with the advantage of using clean energy, they are usually used to replace fuel motorcycles and meet the travel needs of cities where motorcycles are banned.

[0003] Let's take the power unit of an electric motorcycle as an example: Traditional electric motorcycles typically use lead-acid batteries as their power unit. While lead-acid batteries can meet the power supply needs of electric motorcycles, they are heavy and have low energy density, leading to many inconveniences during use. Furthermore, they cannot withstand the demands of low-temperature operation, resulting in a significant reduction in range during winter travel. Therefore, while fully utilizing power units with higher energy density and longer range to ensure travel convenience, it is also necessary to consider the reduction in battery range caused by low winter temperatures. To address this, we provide an electric motorcycle power battery structure to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a power battery structure for electric motorcycles to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An electric motorcycle power battery structure includes a portable handlebar, a base unit is provided on the bottom surface of the portable handlebar, and a top cover unit is provided on the top surface of the base unit.

[0007] The base unit includes a plastic insulating shell fixedly installed on the bottom of the portable handle, a battery cell movably installed inside the plastic insulating shell, and a heating wire movably installed on the side of the plastic insulating shell for heating.

[0008] The top cover unit includes a top cover fixedly installed on the top surface of a plastic insulating shell and an integrated cover plate assembly movably installed on the bottom surface of the top cover for protection.

[0009] A further improvement of this utility model is that: a fixed outer membrane is fixedly connected to the outer surface of the heating wire, a power transmission line is fixedly connected to the top surface of the fixed outer membrane, and the heating wire is movably installed on both sides inside the plastic insulating shell.

[0010] A further improvement of this utility model is that: the number of battery cells is multiple, positive and negative aluminum busbars are movably connected to the top surface of the battery cell, and series aluminum busbars are movably connected to the other end of the top surface of the battery cell.

[0011] A further improvement of this utility model is that: the series aluminum busbar is movably installed on the top surface of two adjacent battery cells, the top output end of the battery cell is fixedly connected to a bridging aluminum busbar, and the side of the battery cell is movably connected to a heat insulation pad.

[0012] A further improvement of this utility model is that: an external interface is fixedly connected to the inside of the side of the top cover; the integrated cover assembly is movably installed on the top surface of the battery cell; the integrated cover assembly is electrically connected to the battery cell; and a fuse is fixedly connected to one end of the top surface of the integrated cover assembly.

[0013] A further improvement of this utility model is that: a power harness is fixedly connected to the other end of the top surface of the integrated cover assembly, a protective plate is fixedly connected to the top surface of the integrated cover assembly, and the power harness is electrically connected to the battery cell.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a power battery structure for an electric motorcycle, which consists of ten cells 35 as a unit group. The cells in each unit are connected by series aluminum busbars 36 and double heat insulation protection is achieved by heat insulation pads 38. Two groups of units are connected by bridging aluminum busbars 39 to form a series structure. Finally, the positive and negative aluminum busbars 37 extend to the external power supply port. The heating wires 33 are positioned by the fixed outer film 32 and are tightly attached to both sides of the cell 35. The whole module is encapsulated in a plastic insulating shell 31, so that the heating system can dynamically maintain the optimal operating temperature range of the cell 35 and significantly extend the battery life.

[0016] 2. This utility model provides a power battery structure for electric motorcycles. The battery cell 35 and the top of the plastic insulating shell 31 are simultaneously connected by bolts through the integrated cover plate assembly 24 to form a stable encapsulation structure. During operation, the protection board 25 monitors the system status in real time and works in conjunction with the fuse 23 and the integrated cover plate assembly 24. When an abnormal state is triggered, the fuse 23 cuts off the current circuit with a millisecond-level response to ensure that the system's safe state is controllable. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the base unit of this utility model;

[0019] Figure 3This is a schematic diagram of the base unit of this utility model;

[0020] Figure 4 This is a schematic diagram of the top cover unit of this utility model;

[0021] Figure 5 This is a schematic diagram of the top cover unit of this utility model.

[0022] In the diagram: 1. Portable handle; 2. Top cover unit; 21. Top cover; 22. External interface; 23. Fuse; 24. Integrated cover assembly; 25. Protection board; 26. Power harness; 3. Base unit; 31. Plastic insulating shell; 32. Fixing outer membrane; 33. Heating wire; 34. Power transmission line; 35. Battery cell; 36. Series aluminum busbar; 37. Positive and negative aluminum busbar; 38. Heat insulation pad; 39. Bridging aluminum busbar. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to embodiments:

[0024] Example 1: As Figure 1-5 As shown, this utility model provides a power battery structure for an electric motorcycle, including a portable handlebar 1, a base unit 3 on the bottom surface of the portable handlebar 1, a top cover unit 2 on the top surface of the base unit 3, the base unit 3 including a plastic insulating shell 31 fixedly installed on the bottom surface of the portable handlebar 1, a battery cell 35 movably installed inside the plastic insulating shell 31, and a heating wire 33 movably installed on the side of the plastic insulating shell 31 for heating, a fixed outer membrane 32 fixedly connected to the outer surface of the heating wire 33, a power transmission line 34 fixedly connected to the top surface of the fixed outer membrane 32, and the heating wire 33 movably installed on both sides inside the plastic insulating shell 31.

[0025] The interior of the plastic insulating shell 31 is divided into two symmetrical regions. Each region has a fixed outer membrane 32 on both sides. Each region is equipped with a power unit group consisting of ten battery cells 35. The battery cells 35 are connected in series within the group through aluminum busbars 36. The two power units are connected in series between the groups through aluminum busbars 39. The battery cells 35 at both ends are connected to the positive and negative aluminum busbars 37 to form an external circuit interface, thereby constructing a complete closed loop to realize the power supply function.

[0026] There are multiple battery cells 35. Positive and negative aluminum busbars 37 are movably connected to the top surface of the battery cell 35. A series aluminum busbar 36 is movably connected to the other end of the top surface of the battery cell 35. The series aluminum busbar 36 is movably installed on the top surface of two adjacent battery cells 35. A bridging aluminum busbar 39 is fixedly connected to the output end of the top surface of the battery cell 35. A heat insulation pad 38 is movably connected to the side of the battery cell 35.

[0027] The outer membrane 32 fixes the heating wires 33 arranged in a ring inside the plastic insulating shell 31. Under low temperature conditions, the heating wires 33 actively heat the battery cell 35 to alleviate the impact of temperature on battery performance. Heat insulation pads 38 are set between each battery cell 35 for physical isolation, effectively blocking the heat conduction path and preventing the risk of thermal runaway.

[0028] In this embodiment, ten cells 35 are grouped into units, and the cells within each unit are connected in series by aluminum busbars 36. Double thermal insulation is achieved through heat insulation pads 38. Two groups of units are connected in series by aluminum busbars 39. Finally, the positive and negative aluminum busbars 37 extend to the external power supply port. The heating wire 33 is positioned by the fixed outer film 32 and is tightly attached to both sides of the cell 35. The entire module is encapsulated in a plastic insulating shell 31, so that the heating system can dynamically maintain the optimal operating temperature range of the cell 35 and significantly extend the battery life.

[0029] Example 2: Figure 1-5 As shown, based on Embodiment 1, this utility model provides a technical solution: Preferably, the top cover unit 2 includes a top cover 21 fixedly installed on the top surface of the plastic insulating shell 31, and an integrated cover plate assembly 24 movably installed on the bottom surface of the top cover 21 for protection. An external interface 22 is fixedly connected to the inside of the side of the top cover 21. The integrated cover plate assembly 24 is movably installed on the top surface of the battery cell 35. The integrated cover plate assembly 24 is electrically connected to the battery cell 35. A fuse 23 is fixedly connected to one end of the top surface of the integrated cover plate assembly 24. A power harness 26 is fixedly connected to the other end of the top surface of the integrated cover plate assembly 24. A protective plate 25 is fixedly connected to the top surface of the integrated cover plate assembly 24. The power harness 26 is electrically connected to the battery cell 35.

[0030] The top cover 21 is fixed to the top of the plastic insulating shell 31 and a heat dissipation gap is reserved. The integrated cover plate assembly 24 is rigidly connected to the threaded hole on the top of the cell 35 by bolts. The protection plate 25 and the fuse 23 form a dual safety mechanism: when the cell 35 has a short circuit or other abnormality, the fuse 23 immediately cuts off the connection between the protection plate 25 and the external circuit, and controls the impact of the fault within a safe range.

[0031] In this embodiment, the battery cell 35 and the top of the plastic insulating shell 31 are simultaneously connected by bolts through the integrated cover plate assembly 24 to form a stable encapsulation structure. During operation, the protection board 25 monitors the system status in real time and works in conjunction with the fuse 23 and the integrated cover plate assembly 24. When an abnormal state is triggered, the fuse 23 cuts off the current circuit with a millisecond-level response to ensure that the system's safe state is controllable.

[0032] The working principle of the power battery structure of this electric motorcycle will be explained in detail below.

[0033] like Figure 1-5As shown, the base unit 3 has a modular design, which connects multiple battery cells 35 in series with aluminum busbars 36 and bridging aluminum busbars 39 to ensure that it can supply power to the outside. At the same time, the top cover unit 2 further fixes the battery cells 35 and protects the base unit 3 through its internal components to ensure stable operation. The base unit 3 will provide a suitable temperature environment for the battery cells 35 to ensure that the battery cells 35 can operate in a healthy state and extend the overall service life of the device.

[0034] Ten cells 35 form a unit group. The cells within the unit are connected by series aluminum busbars 36 and double heat insulation protection is achieved by heat insulation pads 38. Two groups of units form a series structure by bridging aluminum busbars 39. Finally, the positive and negative aluminum busbars 37 extend to the external power supply port. The heating wire 33 is positioned by the fixed outer film 32 and tightly attached to both sides of the cell 35. The entire module is encapsulated in a plastic insulating shell 31, so that the heating system can dynamically maintain the optimal operating temperature range of the cell 35 and significantly extend the battery life.

[0035] The integrated cover assembly 24 connects the battery cell 35 and the top of the plastic insulating shell 31 simultaneously with bolts to form a stable encapsulation structure. During operation, the protection board 25 monitors the system status in real time and works in conjunction with the fuse 23 and the integrated cover assembly 24. When an abnormal state is triggered, the fuse 23 cuts off the current circuit with a millisecond-level response to ensure that the system's safe state is controllable.

[0036] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all modifications or improvements made without departing from the spirit and concept of the present invention are within the protection scope of the present invention.

Claims

1. An electric motorcycle power battery structure comprising a portable handle (1), characterized in that: The bottom surface of the portable handle (1) is provided with a base unit (3), and the top surface of the base unit (3) is provided with a top cover unit (2); The base unit (3) comprises a plastic insulation shell (31) fixedly installed on the bottom surface of the portable handle (1), a battery core (35) movably installed inside the plastic insulation shell (31), and a heating wire (33) movably installed on the side surface of the plastic insulation shell (31) for heating; The top cover unit (2) comprises a top cover (21) fixedly installed on the top surface of the plastic insulation shell (31), and an integrated cover plate assembly (24) movably installed on the bottom surface of the top cover (21) for protection.

2. The power battery structure of an electric motorcycle according to claim 1, characterized in that: The outer surface of the heating wire (33) is fixedly connected with a fixed outer membrane (32), the top surface of the fixed outer membrane (32) is fixedly connected with a power transmission line (34), and the heating wire (33) is movably installed inside the plastic insulation shell (31) on both sides.

3. The power battery structure of an electric motorcycle according to claim 2, characterized in that: The number of the battery core (35) is multiple, the top surface of the battery core (35) is movably connected with a positive and negative aluminum row (37), and the other end of the top surface of the battery core (35) is movably connected with a series aluminum row (36).

4. The power battery structure of an electric motorcycle according to claim 3, characterized in that: The series aluminum row (36) is movably installed on the top surface of two adjacent battery cores (35), the top surface output end of the battery core (35) is fixedly connected with a cross aluminum row (39), and the side surface of the battery core (35) is movably connected with a heat insulation pad (38).

5. The power battery structure of an electric motorcycle according to claim 4, characterized in that: The side surface of the top cover (21) is fixedly connected with an external interface (22), the integrated cover plate assembly (24) is movably installed on the top surface of the battery core (35), the integrated cover plate assembly (24) is electrically connected with the battery core (35), and one end of the top surface of the integrated cover plate assembly (24) is fixedly connected with a fuse (23).

6. The power battery structure of an electric motorcycle according to claim 5, characterized in that: The other end of the top surface of the integrated cover plate assembly (24) is fixedly connected with a power line harness (26), the top surface of the integrated cover plate assembly (24) is fixedly connected with a protection plate (25), and the power line harness (26) is electrically connected with the battery core (35).

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