Lithium battery module for electric motorcycle

Abstract

The invention relates to the technical field of secondary batteries, in particular to a lithium battery module for an electric motorcycle. A U-shaped cavity is formed between a mounting frame and a placement bin; an extension channel is arranged between the mounting frame and the placement bin; the temperature sensor is fixedly connected to the inner wall of the placing bin; the frame is fixedly connected in the top cover; at least two groups of blowing fan blades; the transmission shaft is rotationally connected into the top cover; and each group of blowing fan blades is connected with the transmission shaft through one group of bevel gear sets. By integrating the temperature sensor and the controllable active heat dissipation / heating airflow, high and low temperature extreme environments are effectively handled: forced air cooling is carried out at high temperature to quickly export heat, the loss of the battery pack is delayed, and the safety is improved; the preheating airflow at low temperature can improve the low-temperature performance of the battery and reduce endurance attenuation.

Description

Technical Field

[0001] This invention relates to the field of secondary battery technology, and more particularly to a lithium battery module for electric motorcycles. Background Technology

[0002] Electric motorcycles, as a green and convenient personal transportation tool, primarily use lithium-ion battery modules as their power source. Lithium batteries, due to their advantages such as high energy density, long cycle life, and light weight, have become the preferred choice for energy storage systems in electric motorcycles. Lithium battery modules typically consist of multiple cells connected in series and parallel, working in conjunction with a battery management system to control and protect the charging and discharging process, thereby providing a stable and reliable energy supply for the vehicle.

[0003] However, in actual use, the performance of lithium battery modules is significantly affected by ambient temperature. Specifically, in the high-temperature environment of summer, the internal chemical reaction of the battery intensifies, which not only leads to accelerated capacity decay and shortened cycle life, but also poses a risk of thermal runaway, with a high potential risk factor. In the low-temperature conditions of winter, the conductivity of the electrolyte decreases and the electrode reaction rate slows down, resulting in increased battery internal resistance and a significant reduction in usable capacity, which greatly reduces the driving range of electric motorcycles, while also significantly reducing charging efficiency.

[0004] Therefore, existing lithium battery modules for electric motorcycles have weak adaptability to wide temperature ranges, exhibiting poor durability at high temperatures and poor range performance at low temperatures, which restricts the user experience of the vehicle under different climate conditions throughout the year. Summary of the Invention

[0005] This invention provides a lithium battery module for electric motorcycles that can improve adaptability in a wide temperature range environment, aiming to solve the defects of the prior art mentioned in the background.

[0006] Technical solution: A lithium battery module for electric motorcycles, comprising: a mounting frame, a placement compartment fixedly connected to the mounting frame, a battery pack disposed in the placement compartment, and a top cover fixedly connected to the top of the mounting frame; An air inlet is located on the top right side of the mounting frame; A U-shaped chamber is provided between the mounting frame and the placement compartment. The U-shaped chamber surrounds the left and right sides and the bottom of the placement compartment, and its right end faces the air inlet of the mounting frame. The device further includes: an extension channel between the mounting frame and the placement compartment, located on the right side of the U-shaped chamber, with openings on both the upper and lower sides of the extension channel, and the upper opening opposite the air inlet of the mounting frame; The temperature sensor is fixedly connected to the inner wall of the placement compartment to monitor the temperature of the battery pack. It contains a control module that can transmit control signals. The frame is fixedly connected to the top cover; At least two sets of blower blades are rotatably connected to the frame; The drive shaft is rotatably connected inside the top cover, and its axis is perpendicular to the rotating shaft of each blower fan blade; The bevel gear set connects each set of blower blades to the drive shaft via a set of bevel gears. Each set of bevel gears consists of two vertically meshing bevel gears, one of which is coaxially fixed to the drive shaft and the other is coaxially fixed to the blower blades. The first motor is fixedly connected inside the top cover, and its output end is fixed coaxially with the transmission to provide rotational power; And heating wire, which is fixedly connected to the top cover; The temperature sensor is electrically connected to the first motor and the heating wire through its control module.

[0007] Furthermore, it is particularly preferred that the device further includes: a finned plate, fixedly connected to the U-shaped chamber, for increasing the contact area between the gas and the placement chamber; Each fin plate has a bottom groove, which allows the internal spaces of the separated U-shaped chambers to be interconnected.

[0008] Furthermore, it is particularly preferred that the device further includes a filter, which is assembled and fixedly connected to the top cover for filtering impurities in the airflow; The blower blades, heating wire, filter, and air inlet of the mounting frame are arranged in a straight line.

[0009] Furthermore, it is particularly preferred that the device further includes: an adjustment plate, rotatably located at the air inlet on the top right side of the mounting frame, the rotation of which can change the connectivity of the internal air duct; when the adjustment plate is rotated to the horizontal position, it will separate the air inlet of the mounting frame, so that the right end of the U-shaped chamber is directly connected to the extension channel; when the adjustment plate is rotated to the vertical position, it will disconnect the air duct between the U-shaped chamber and the extension channel. There is an installation compartment on the front and back sides of the top right side of the installation frame; Two mounting plates are respectively covered and fixedly connected to the two mounting compartments; Two second motors are fixedly connected to their respective mounting plates; Two sets of transmission components are located between each second motor and the adjustment plate. The second motor drives the adjustment plate to rotate through the transmission components.

[0010] Furthermore, it is particularly preferred that the adjusting plate has an edge cavity and a central cavity inside, which are connected; The device also includes: a rubber ring edge, which is fixedly connected to the edge of the adjustment plate and is used to seal the edge cavity. The shape of the rubber ring edge will expand or contract with the air pressure changes in the edge cavity and the central cavity. Two control plates are slidably connected to the front and rear sides of the central cavity, respectively, and form a sealed fit with the adjustment plate. Their sliding displacement can change the air pressure in the edge cavity and the central cavity. It also includes two sets of control components, each located in its corresponding installation compartment and connected to the control board on the same side, which in turn drive the two control boards to move.

[0011] Furthermore, it is particularly preferred that each transmission assembly includes: a drive gear, which is fixedly connected to the output end of the second motor; The external gear ring is rotatably connected to the mounting plate and meshes with the drive gear. The internal gear ring is fixedly connected to the external gear ring; The first gear is rotatably connected to the mounting plate and meshes with the internal gear ring. And a second gear, which is rotatably connected to the mounting plate and meshes with the first gear, and whose shaft is connected to the adjusting plate.

[0012] Furthermore, it is particularly preferred that the device further includes: a sleeve, which is fixedly connected to the front and rear sides of the adjusting plate, and the adjusting plate is rotatably connected to the top right side of the mounting frame through the sleeve; Each control assembly includes: a threaded rod, which is rotatably connected to the corresponding control plate and threadedly connected to the sleeve on the same side, and the thread is a reciprocating thread; And a splined shaft, coaxially fixedly connected to the second gear, and engaged with the corresponding threaded rod through a spline to transmit the rotational motion of the second gear to the threaded rod.

[0013] Furthermore, it is particularly preferred that the device further includes: two sets of misalignment components, respectively disposed between the corresponding transmission components, adjusting plate and threaded rod, for causing relative angular displacement between the adjusting plate and the threaded rod; Each set of misalignment components includes: a transition plate, which is rotatably connected to the mounting plate and fixedly connected to the sleeve on the same side; The control protrusion is fixedly connected to the external gear ring; And the mating protrusion is fixedly connected to the transition plate. When the outer gear ring rotates, the control protrusion on it will contact the mating protrusion, thereby driving the transition plate to rotate. The device further includes: a limiting bead, which is slidably connected to the transition plate; And a return spring, which is fixedly connected between the limit bead and the transition plate to provide elastic return force for the limit bead; Two limiting grooves are provided on the side wall of the installation chamber. When the limiting beads are in each limiting groove under the action of the return spring, they can restrict the rotation of the transition plate and the adjustment plate fixed thereto.

[0014] Beneficial Effects: This invention effectively addresses extreme high and low temperature environments by integrating a temperature sensor with a controllable active cooling / heating airflow: at high temperatures, forced air cooling rapidly dissipates heat, slowing battery pack wear and improving safety; at low temperatures, preheating the airflow improves battery low-temperature performance and reduces range degradation. Therefore, the overall structure of this invention enhances the all-weather adaptability of lithium battery modules, solving the problems of shortened battery life and reduced range caused by high and low temperatures in the prior art.

[0015] This invention, by adding a rotatable adjustment plate, allows the airflow mode to be flexibly switched according to the ambient temperature: during high-temperature heat dissipation, it forms a highly efficient unidirectional heat dissipation channel, enhancing heat dissipation capacity and preventing heat accumulation; during low-temperature heating, it switches to an internal circulation mode, reducing heat loss and improving energy efficiency. This structure will significantly improve the thermal management adaptability and energy utilization efficiency of lithium battery modules under extreme temperatures, further solving the problems of easy battery damage at high temperatures and reduced battery life at low temperatures.

[0016] This invention aims to achieve dynamic sealing of the gap by setting a controllable air pressure chamber and an expandable sealing rubber ring edge inside the regulating plate, while maintaining the rotation flexibility of the regulating plate; when it is necessary to isolate the airflow, the expansion of the rubber ring edge can effectively prevent airflow leakage, ensuring the independent and efficient function of the air duct in heat dissipation or heating mode, and further improving the response accuracy and energy utilization efficiency of the overall structure of this invention.

[0017] This invention enables time-sequential coordinated control of the adjustment plate rotation and dynamic sealing: the seal is released before rotation to avoid frictional wear between the rubber ring edge and the mounting frame, and the seal is achieved after rotation to the correct position, ensuring rapid, accurate and reliable switching of the airflow channel state, and further enhancing the adaptability of the lithium battery module to different situations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the internal structure of the present invention after partial cross-section.

[0020] Figure 3 This is a separate diagram showing the connection structure of the mounting frame, placement compartment, battery pack, and top cover of the present invention.

[0021] Figure 4 This is a cross-sectional view showing the location and structure of the U-shaped chamber and the extended channel of the present invention.

[0022] Figure 5 This is a schematic diagram showing the position and structure of the blower fan blades, heating wires, and filter of the present invention.

[0023] Figure 6 This is a schematic diagram of the connection structure of the blower fan blades of the present invention.

[0024] Figure 7 This is a structural separation diagram showing the positions of the mounting plate, adjustment plate, and drive assembly of the present invention.

[0025] Figure 8 This is a schematic diagram showing the airflow direction when the regulating plate of the present invention is located in the vertical and horizontal positions.

[0026] Figure 9 This is a schematic diagram showing the positional structure of the adjustment plate, drive assembly, transmission assembly, and misalignment assembly of the present invention.

[0027] Figure 10 This is a partial cross-sectional view of the adjustment plate of the present invention, showing the separation of its internal structure from the edge of the rubber ring.

[0028] Figure 11 This is a separate diagram showing the connection structure of the adjustment plate, drive assembly, control assembly, and transmission assembly of the present invention.

[0029] Figure 12 This is a separate diagram showing the connection structure of the drive component, control component, transmission component, and misalignment component of the present invention.

[0030] Figure 13 This is a schematic diagram of the fitting structure of the limiting bead and the limiting groove of the present invention.

[0031] In the diagram: 01, mounting frame; 02, placement compartment; 03, battery pack; 04, top cover; 05, U-shaped chamber; 06, finned plate; 07, bottom groove; 08, extension channel; 11, temperature sensor; 12, frame; 13, blower fan blade; 14, drive shaft; 15, bevel gear set; 16, first motor; 17, heating wire; 18, filter; 21, adjustment plate; 22, mounting compartment; 23, mounting plate; 24, second motor; 25, edge cavity; 26, center cavity; 27, tube sleeve; 31, rubber ring edge; 32, control plate; 33, threaded rod; 34, drive gear; 35, external gear ring; 36, internal gear ring; 37, first gear; 38, second gear; 39, splined shaft; 41, transition plate; 42, mating protrusion; 43, control protrusion; 44, limit bead; 45, return spring; 46, limit groove. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0033] Example: A lithium battery module for electric motorcycles, see reference. Figures 1-4The system includes: a mounting frame 01 with an air inlet on its top right side; a placement compartment 02 fixedly installed inside the mounting frame 01; a battery pack 03 assembled inside the placement compartment 02; a top cover 04 fixedly installed on the top of the mounting frame 01; a U-shaped chamber 05 between the mounting frame 01 and the placement compartment 02, the U-shaped chamber 05 surrounding the left and right sides and bottom of the placement compartment 02, with its right end facing the air inlet of the mounting frame 01; finned plates 06 fixedly installed inside the U-shaped chamber 05 to increase the contact area between the gas and the placement compartment 02; a bottom groove 07 at the bottom of each finned plate 06 to connect the internal spaces of the separated U-shaped chambers 05 to improve gas flow; an extension channel 08 between the mounting frame 01 and the placement compartment 02, located on the right side of the U-shaped chamber 05, with openings on both the upper and lower sides of the extension channel 08, the upper opening facing the air inlet of the mounting frame 01.

[0034] See Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 It also includes: a temperature sensor 11, fixedly installed on the inner wall of the placement compartment 02, used to monitor the temperature of the battery pack 03, which has a control module inside capable of transmitting control signals; a frame 12, fixedly installed below the top cover 04 and located at the top of the mounting frame 01; multiple blower blades 13, rotatably mounted on the frame 12; a drive shaft 14, rotatably mounted inside the top cover 04, its axis perpendicular to the rotation axis of each blower blade 13; and a bevel gear set 15, in which each group of blower blades 13 is connected to the drive shaft 14 through a bevel gear set 15, so that the drive shaft 14 can synchronously drive all the blower blades 13 to rotate, and each bevel gear set 15 consists of two vertically meshing bevel gears. One component is coaxially fixed to the drive shaft 14, and the other is coaxially fixed to the blower fan blade 13; the first motor 16 is fixedly installed inside the top cover 04, and its output end is coaxially fixed to the drive shaft to provide rotational power; the heating wire 17 is fixedly installed below the top cover 04 and located at the top of the mounting frame 01; the temperature sensor 11 is electrically connected to the first motor 16 and the heating wire 17 respectively through its control module; the filter 18 is assembled and fixedly installed on the top cover 04 to filter impurities in the airflow and prevent blockage in the U-shaped chamber 05, which would affect the heat exchange efficiency; the blower fan blade 13, the heating wire 17, the filter 18, and the air inlet of the mounting frame 01 are arranged in sequence along the same straight line.

[0035] When in a high-temperature environment, the temperature sensor 11 detects heat accumulation in the battery pack 03. Its control module starts the first motor 16, which drives the transmission shaft 14 to rotate and drives all the blower fan blades 13 to rotate synchronously through the bevel gear set 15. This causes external airflow to be drawn into the device from the air inlet of the mounting frame 01. Then, the low-temperature airflow enters from the left port of the U-shaped chamber 05, flows through the fin plate 06 and exchanges heat with the placement chamber 02, absorbing the heat emitted by the battery pack 03. Finally, the hot airflow is discharged through the right port of the U-shaped chamber 05 and the extension channel 08, achieving active heat dissipation. When in a low-temperature environment, the control module of the temperature sensor 11 simultaneously starts the first motor 16 and the heating wire 17. The cold air intake is preheated by the heating wire 17 and then flows through the U-shaped chamber 05 and the fin plate 06 to heat the placement chamber 02 and the battery pack 03, providing a suitable working temperature environment for the battery pack 03.

[0036] This device effectively copes with extreme high and low temperature environments by integrating a temperature sensor 11 and a controllable active cooling / heating airflow: at high temperatures, forced air cooling quickly dissipates heat, delaying battery pack O3 wear and improving safety; at low temperatures, preheating the airflow improves battery low-temperature performance and reduces range degradation. Therefore, the overall structure of this device enhances the all-weather adaptability of the lithium battery module, solving the problems of shortened battery life and reduced range caused by high and low temperatures in the background technology.

[0037] See Figure 1 , Figure 2 , Figure 7 , Figure 8 and Figure 9 The device also includes: an adjusting plate 21, rotatably mounted at the air inlet of the mounting frame 01, whose rotation can change the connection state of the internal air duct. When the adjusting plate 21 is rotated to the horizontal position, it will separate the air inlet of the mounting frame 01, so that the right end of the U-shaped chamber 05 is directly connected to the extension channel 08. When the adjusting plate 21 is rotated to the vertical position, it will block the air duct between the U-shaped chamber 05 and the extension channel 08. There is a mounting chamber 22 on the front and rear sides of the top right side of the mounting frame 01. Two mounting plates 23 are respectively covered and fixedly mounted on the two mounting chambers 22. Two second motors 24 are respectively fixedly mounted on the corresponding mounting plates 23. Two sets of transmission components are located between each second motor 24 and the adjusting plate 21. The second motors 24 drive the adjusting plate 21 to rotate through the transmission components.

[0038] When cooling of battery pack 03 is required, the second motor 24 is controlled to operate, causing the adjusting plate 21 to rotate to a horizontal position. (See reference...) Figure 8In state one, after the external airflow enters the U-shaped chamber 05 through the air inlet of the mounting frame 01, the right port of the U-shaped chamber 05 is directly connected to the extension channel 08 under the separation effect of the regulating plate 21. After the airflow flows through the U-shaped chamber 05 and exchanges heat with the fin plate 06, it will flow out from the right port of the U-shaped chamber 05 and be discharged directly through the extension channel 08, thus forming a unidirectional air duct, which is conducive to the rapid heat dissipation and enhances the heat dissipation efficiency. When it is necessary to heat and maintain the temperature of battery pack 03, the second motor 24 is controlled to drive the adjusting plate 21 to rotate to the vertical position. (See reference...) Figure 8 In state two, the hot airflow generated by the heating wire 17 enters the U-shaped chamber 05 for heat exchange under the drive of the blower fan blade 13. The airflow flowing out of the right end of the U-shaped chamber 05 will be directly sucked into the blower fan blade 13 and re-enter the U-shaped chamber 05 to form a closed-loop air duct. This fully utilizes the waste heat of the airflow, reduces the demand for external heating, reduces the energy consumption of the heating wire 17, and improves energy utilization efficiency.

[0039] This device, by adding a rotatable adjustment plate 21, allows it to flexibly switch airflow modes according to ambient temperature: during high-temperature heat dissipation, it forms a highly efficient unidirectional heat dissipation channel to enhance heat dissipation capacity and prevent heat accumulation; during low-temperature heating, it switches to an internal circulation mode to reduce heat loss and improve energy efficiency. This structure will significantly improve the thermal management adaptability and energy utilization efficiency of the lithium battery module under extreme temperatures, further addressing the problems of high-temperature battery wear and reduced battery life at low temperatures.

[0040] See Figures 9-10 The regulating plate 21 has an edge cavity 25 and a central cavity 26 inside, which are connected. The device also includes: a rubber ring edge 31, which is fixedly installed on the edge of the regulating plate 21 to seal the edge cavity 25. The shape of the rubber ring edge 31 will expand or contract with the air pressure changes in the edge cavity 25 and the central cavity 26; two control plates 32, which are slidably installed on the front and rear sides of the central cavity 26 respectively, and form a sealed fit with the regulating plate 21. Their sliding displacement can change the air pressure in the edge cavity 25 and the central cavity 26; two sets of control components are respectively set in the corresponding installation chambers 22 and connected to the control plates 32 on the same side, which drive the two control plates 32 to move accordingly.

[0041] To ensure smooth rotation of the adjusting plate 21, a certain gap must be maintained between it and the wall of the mounting frame 01. Therefore, the two control plates 32 are driven to move in opposite directions by the control component, reducing the volume of the central cavity 26, thereby increasing the air pressure in the edge cavity 25 and the central cavity 26. The increased air pressure causes the rubber ring edge 31 to expand outward, thus tightly fitting the wall of the mounting frame 01 and effectively sealing the gap between the adjusting plate 21 and the mounting frame 01, ensuring reliable airflow channel isolation. When it is necessary to rotate the adjusting plate 21, the control component is adjusted in the opposite direction to reduce the air pressure in the cavity, causing the rubber ring edge 31 to contract, thereby restoring the rotational freedom of the adjusting plate 21.

[0042] This device, by setting a controllable air pressure chamber and an expandable sealing rubber ring edge 31 inside the regulating plate 21, aims to achieve dynamic sealing of its gap while maintaining the rotational flexibility of the regulating plate 21; when it is necessary to isolate the airflow, the expansion of the rubber ring edge 31 can effectively prevent airflow leakage, ensuring the independent and efficient function of the air duct in heat dissipation or heating mode, and further improving the response accuracy and energy utilization efficiency of the overall structure of this device.

[0043] See Figure 2 , Figure 7 , Figure 9 , Figure 11 and Figure 12 Each transmission assembly includes: a drive gear 34, fixedly mounted on the output end of the second motor 24; an outer gear ring 35, rotatably mounted on the mounting plate 23, which meshes with the drive gear 34; an inner gear ring 36, fixedly mounted on the outer gear ring 35; a first gear 37, rotatably mounted on the mounting plate 23, and meshing with the inner gear ring 36; and a second gear 38, rotatably mounted on the mounting plate 23, meshing with the first gear 37, with its shaft connected to the adjusting plate 21.

[0044] See Figures 10-12 The device also includes: a sleeve 27, which is fixedly installed on the front and rear sides of the adjusting plate 21, and the adjusting plate 21 is rotatably installed on the top right side of the mounting frame 01 through the sleeve 27; each control component includes: a threaded rod 33, which is rotatably installed on the corresponding control plate 32 and is threadedly connected to the sleeve 27 on the same side, and its thread is a reciprocating thread; a splined shaft 39, which is coaxially fixedly installed on the second gear 38 and is splinedly engaged with the corresponding threaded rod 33 to transmit the rotational motion of the second gear 38 to the threaded rod 33.

[0045] See Figure 2 , Figure 7 , Figure 9 , Figure 11 and Figure 12The device also includes two sets of misalignment components, which are respectively located between the corresponding transmission components, the adjusting plate 21 and the threaded rod 33. After the second motor 24 starts, the timing of the rotation of the adjusting plate 21 and the drive of the threaded rod 33 to the control plate 32 is staggered, so that the two generate relative angular displacement, thereby realizing the sequential control of the sealing and rotation actions. Each set of misalignment components includes: a transition plate 41, which is rotatably mounted on the mounting plate 23 and fixedly connected to the sleeve 27 on the same side; a control protrusion 43, which is fixedly mounted on the outer gear ring 35; and a mating protrusion 42, which is fixedly mounted on the transition plate 41. When the outer gear ring 35 rotates, the control protrusion 43 on it will contact the mating protrusion 42, thereby driving the transition plate 41 to rotate together.

[0046] See Figure 9 , Figure 11 , Figure 12 and Figure 13 The device also includes: a limiting bead 44, which is slidably mounted on the transition plate 41; a return spring 45, which is fixedly mounted between the limiting bead 44 and the transition plate 41 to provide elastic return force for the limiting bead 44; and two limiting grooves 46 are provided on the side wall of the mounting chamber 22. When the limiting bead 44 is in each limiting groove 46 under the action of the return spring 45, it can restrict the rotation of the transition plate 41 and the adjusting plate 21 fixed thereto.

[0047] The second motor 24 is started, driving the gear 34 to rotate the outer gear ring 35 and the inner gear ring 36, which in turn drives the first gear 37 and the second gear 38 to rotate. The rotation of the second gear 38 is then transmitted to the threaded rod 33 through the spline shaft 39. In the initial stage, because the limit bead 44 is stuck in the limit groove 46, the transition plate 41 and the adjusting plate 21 are locked. At this time, the rotating threaded rod 33 and the stationary sleeve 27 rotate relative to each other, driving the two control plates 32 to separate towards each other, so that the volume of the edge cavity 25 and the center cavity 26 increases and the air pressure decreases, the rubber ring edge 31 contracts, thereby releasing the seal and restoring the rotational freedom of the adjusting plate 21. As the outer gear ring 35 continues to rotate, the control protrusion 43 on it contacts the mating protrusion 42 on the transition plate 41, pushing the transition plate 41 to overcome the elastic force of the return spring 45, causing the limit bead 44 to retract from the current limit groove 46. After that, the outer gear ring 35 drives the transition plate 41, the sleeve 27 and the adjusting plate 21 to start rotating together. During the process of the adjusting plate 21 rotating from the horizontal state to the vertical state (or vice versa), when the rotation stroke is halfway through, the reciprocating thread design of the threaded rod 33 causes its rotation direction to change relative to each other, thereby driving the two control plates 32 to move towards each other in the opposite direction, reducing the volume of the edge cavity 25 and the center cavity 26, increasing the air pressure, and the rubber ring edge 31 begins to pre-expand. When the adjusting plate 21 is rotated to the target position (horizontal or vertical), the limiting bead 44 on the transition plate 41 is precisely aligned and locked into another limiting groove 46 under the action of the reset spring 45, thus stably locking the adjusting plate 21. After the control plate 32 completes the movement, the air pressure in the chamber causes the rubber ring edge 31 to fully expand, tightly filling the gap between the adjusting plate 21 and the mounting frame 01, thus achieving an effective seal.

[0048] This device will realize the time-sequential coordinated control of the rotation of the regulating plate 21 and the dynamic sealing: the seal is released before rotation to avoid frictional wear between the rubber ring edge 31 and the mounting frame 01, and the seal is achieved after rotation to the position, ensuring the rapid, accurate and reliable switching of the airflow channel state, and further enhancing the adaptability of the lithium battery module to different situations.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A lithium battery module for an electric motorcycle, comprising: The installation frame (01), the placing bin (02) fixedly connected in the installation frame (01), the battery pack (03) arranged in the placing bin (02), and the top cover (04) fixedly connected to the top of the installation frame (01); The installation frame (01) is characterized in that the right top of the installation frame (01) is provided with an air inlet; The installation frame (01) is provided with a U-shaped chamber (05) between the installation frame (01) and the placing bin (02), the U-shaped chamber (05) surrounds the left and right sides and the bottom side of the placing bin (02), and the right end of the U-shaped chamber (05) is opposite to the air inlet of the installation frame (01); The device further comprises an extension channel (08) provided between the installation frame (01) and the placing bin (02) and located on the right side of the U-shaped chamber (05), the extension channel (08) is provided with air inlets on the upper side and the lower side, and the upper air inlet is opposite to the air inlet of the installation frame (01); The temperature sensor (11) is fixedly connected to the inner wall of the placing bin (02) and is used for monitoring the temperature of the battery pack (03), and the temperature sensor (11) is internally provided with a control module capable of emitting a control signal; The frame (12) is fixedly connected to the top cover (04); The at least two groups of air blowing fan blades (13) are rotationally connected to the frame (12); The transmission shaft (14) is rotationally connected to the inside of the top cover (04) and is axially perpendicular to the rotation shafts of the air blowing fan blades (13); The bevel gear set (15) is connected between each group of air blowing fan blades (13) and the transmission shaft (14) through a group of bevel gear sets (15), each group of bevel gear sets (15) is composed of two vertically meshed bevel gears, one of which is coaxially fixed to the transmission shaft (14), and the other is coaxially fixed to the air blowing fan blade (13); The first motor (16) is fixedly connected to the inside of the top cover (04) and is coaxially fixed to the output end of the transmission, and is used for providing rotary power; The heating wire (17) is fixedly connected to the inside of the top cover (04); The temperature sensor (11) is electrically connected to the first motor (16) and the heating wire (17) through the control module.

2. The lithium battery module for an electric motorcycle according to claim 1, wherein The device further comprises fin plates (06) fixedly connected to the inside of the U-shaped chamber (05) and used for increasing the contact area of the gas and the placing bin (02); The bottom of each fin plate (06) is provided with a bottom groove (07) to make the internal spaces of the divided U-shaped chambers (05) communicate with each other.

3. The lithium battery module for an electric motorcycle according to claim 2, wherein The device further comprises a filter (18) fixedly connected to the top cover (04) and used for filtering impurities in the air flow; The air blowing fan blades (13), the heating wire (17), the filter (18) and the air inlet of the installation frame (01) are arranged along the same straight line in sequence.

4. The lithium battery module for an electric motorcycle according to claim 3, wherein The device further comprises an adjusting plate (21) rotationally arranged at the air inlet on the right top of the installation frame (01), the rotation of the adjusting plate (21) can change the communication state of the internal air duct; when the adjusting plate (21) is rotated to the horizontal position, the air inlet of the installation frame (01) is separated, the right end of the U-shaped chamber (05) is directly communicated with the extension channel (08); when the adjusting plate (21) is rotated to the vertical position, the air duct between the U-shaped chamber (05) and the extension channel (08) is cut off; The installation frame (01) is provided with an installation bin (22) on each of the front and back sides of the right top of the installation frame (01). Two mounting plates (23) are respectively fixedly connected to the two mounting cavities (22); Two second motors (24) are respectively fixedly connected to the corresponding mounting plates (23); And two groups of transmission assemblies are arranged between the second motors (24) and the adjusting plate (21), and the second motor (24) drives the adjusting plate (21) to rotate through the transmission assembly.

5. A lithium battery module for an electric motorcycle as claimed in claim 4, characterized in that, The adjusting plate (21) is internally provided with a marginal cavity (25) and a central cavity (26) in communication; The device further comprises a rubber ring edge (31) fixedly connected to the edge of the adjusting plate (21) for sealing the marginal cavity (25), and the shape of the rubber ring edge (31) will expand or contract with the change of air pressure in the marginal cavity (25) and the central cavity (26); Two control plates (32) are respectively slidably connected to the front and rear sides of the central cavity (26) and are in sealed cooperation with the adjusting plate (21), and the sliding displacement of the control plates (32) can change the air pressure in the marginal cavity (25) and the central cavity (26); And two groups of control assemblies are respectively arranged in the corresponding mounting cavities (22) and are connected with the control plates (32) on the same side to correspondingly drive the two control plates (32) to move.

6. A lithium battery module for an electric motorcycle as claimed in claim 5, characterized in that, Each group of transmission assemblies comprises a drive gear (34) fixedly connected to the output end of the second motor (24); An outer gear ring (35) rotatably connected to the mounting plate (23) and engaged with the drive gear (34); An inner gear ring (36) fixedly connected to the outer gear ring (35); A first gear (37) rotatably connected to the mounting plate (23) and engaged with the inner gear ring (36); And a second gear (38) rotatably connected to the mounting plate (23) and engaged with the first gear (37), and the rotating shaft of the second gear (38) is connected with the adjusting plate (21).

7. A lithium battery module for an electric motorcycle as claimed in claim 6, characterized in that, The device further comprises a pipe sleeve (27) fixedly connected to the front and rear sides of the adjusting plate (21), and the adjusting plate (21) is rotatably connected to the right top of the mounting frame (01) through the pipe sleeve (27); Each group of control assemblies comprises a threaded rod (33) rotatably connected to the corresponding control plate (32) and threadedly connected with the pipe sleeve (27) on the same side, and the thread is a reciprocating thread; And a spline shaft (39) coaxially fixedly connected to the second gear (38) and engaged with the corresponding threaded rod (33) to transmit the rotary motion of the second gear (38) to the threaded rod (33).

8. A lithium battery module for an electric motorcycle as claimed in claim 7, characterized in that, The device further comprises two groups of misalignment assemblies respectively arranged between the corresponding transmission assemblies, the adjusting plate (21) and the threaded rod (33) to cause the relative angular displacement between the adjusting plate (21) and the threaded rod (33); Each group of misalignment assemblies comprises a transition disc (41) rotatably connected to the mounting plate (23) and fixedly connected with the pipe sleeve (27) on the same side; A control protrusion (43) fixedly connected to the outer gear ring (35); And a matching protrusion (42) fixedly connected to the transition disc (41), and the outer gear ring (35) rotates to contact the control protrusion (43) and the matching protrusion (42) on it to drive the transition disc (41) to rotate; The device further comprises a limiting bead (44) slidably connected to the transition disc (41). And reset spring (45), fixedly connected between the limiting bead (44) and transition disc (41), provide elastic reset force for limiting bead (44); The side wall of the mounting bin (22) is provided with two limiting grooves (46), when the limiting bead (44) is in each limiting groove (46) under the action of the reset spring (45), the transition disc (41) and the fixed adjusting plate (21) can be limited to rotate.

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