A power supply device for an electric motorcycle

Abstract

The present invention discloses a power supply device for an electric motorcycle, which includes a battery body arranged on the motorcycle. A heat dissipation unit for heat dissipation is arranged on the outer end face of the battery body. The heat dissipation unit includes a heat conducting plate for heat dissipation. A volume-variable sealed cavity is formed between the heat conducting plate and the battery body through a surrounding corrugated telescopic member. The present invention provides a power supply device for an electric motorcycle, which can directly perform direct cooling heat dissipation on the battery body when the temperature of the battery body exceeds a set value, and at the same time cut off the electrical connection between the battery body and the motorcycle during the heat dissipation process, thereby cutting off the heat generation source, better dissipating heat from the battery body. At the same time, after the battery is directly cooled emergently, the battery cannot be used anymore. It is necessary to disassemble and fully inspect the battery and then vacuum package it again before it can be used, thereby avoiding the continued use of a battery with potential safety hazards.

Description

Technical Field

[0001] The present invention relates to the technical field of power sources for electric motorcycles, and particularly to a power supply device for an electric motorcycle. Background Art

[0002] An electric motorcycle is a means of transportation driven by electricity as an energy source. As described in the publication number CN219884008U, it includes a battery, a motor, and a control device inside. During driving, it is necessary to protect the battery from being impacted.

[0003] During the use or charging process of an electric motorcycle, the battery will generate a large amount of heat. Especially during high-voltage charging, the heat cannot be released immediately, which may lead to the phenomenon of battery spontaneous combustion, causing irreparable losses to the vehicle or personnel. Therefore, there is an urgent need for a device that can cool the battery emergently when the battery temperature rises sharply, so as to ensure the safety of the vehicle and personnel. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a power supply device for an electric motorcycle. When the battery temperature exceeds the set value, direct cooling operation is performed on the battery body, that is, an insulating heat dissipation fluid is directly sprayed on the battery body to emergently dissipate heat from the battery body.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions: A power supply device for an electric motorcycle includes a battery body disposed on the motorcycle. A heat dissipation unit for heat dissipation is provided on the outer end face of the battery body. The heat dissipation unit includes a heat conduction plate for heat dissipation. A volume-variable sealed cavity is formed between the heat conduction plate and the battery body through a surrounding corrugated telescopic member. When the sealed cavity is in a vacuum state, the corrugated telescopic member contracts and deforms, and the heat conduction plate presses against the battery body for heat conduction. A plug for electrical connection after being inserted and matched with the battery body is provided at the bottom of the heat conduction plate. A connection module is connected to the heat conduction plate. The connection module is used to electrically connect the plug to the motorcycle and to introduce an insulating fluid for heat dissipation into the sealed cavity. When the temperature of the battery body exceeds the set value, the connection module introduces the insulating fluid into the sealed cavity. The insulating fluid directly acts on the battery body to dissipate heat from it. The corrugated telescopic member expands, the space of the sealed cavity expands, the heat conduction plate is separated from the battery body, and the electrical connection between the plug and the battery body is disconnected.

[0006] The beneficial effects are as follows: When the temperature of the battery body exceeds the set value, an insulating fluid is sprayed on the battery body to directly perform direct cooling heat dissipation on the battery body. At the same time, during the heat dissipation process, the electrical connection between the battery body and the motorcycle is cut off, thereby cutting off the heat generation source and better dissipating heat from the battery body.

[0007] In the above solution, preferably, it further includes a protective cover which is arranged on the motorcycle and the battery body is located inside the protective cover. An air vent groove is provided on the end face of the protective cover.

[0008] In the above solution, preferably, heat dissipation fins for heat dissipation are arranged on the outer end face of the heat conducting plate. The heat dissipation fins are adapted to the air vent groove. When the insulating fluid is introduced into the sealed cavity, the heat conducting plate moves outward and presses against the inner wall of the protective cover, and the heat dissipation fins are inserted into the air vent groove with the outer ends extending out of the outer end face of the protective cover.

[0009] In the above solution, preferably, the pleated telescopic member is a bellows - type pleated seal which can guide the heat conducting plate during the opening process so that the heat dissipation fins are inserted into the air vent groove.

[0010] In the above solution, preferably, a jack is provided on the battery body, and an elastic telescopic head is transversely arranged on the plug. When the plug leaves the jack, the elastic telescopic head extends out, thereby preventing the plug from being inserted into the jack again.

[0011] In the above solution, preferably, a groove is provided on the inner wall of the jack. When the plug is located in the jack, the elastic telescopic head abuts against the groove, elastically locking the plug in the jack.

[0012] In the above solution, preferably, the connection module is communicated with a charging socket arranged on the motorcycle. The charging socket is provided with a charging connector and a fluid connector. A liquid storage tank is arranged in a charger matching the charging socket, and insulating coolant is stored in the liquid storage tank. During charging, the liquid storage tank is connected to the fluid connector, and when the temperature of the battery body exceeds the set value, the insulating coolant is introduced into the sealed cavity for heat dissipation.

[0013] In the above solution, preferably, a pressure tank is arranged on the motorcycle. Powdered dry ice is arranged in the pressure tank and is connected to the fluid channel in the connection module. When the motorcycle is running and the temperature of the battery body exceeds the set value, the pressure tank opens, and the powdered dry ice is sprayed into the sealed cavity through the fluid channel, vaporizes for heat dissipation, and makes the pleated telescopic member expand rapidly, disconnecting the electrical connection between the plug and the battery body.

[0014] In the above solution, preferably, a temperature sensor is arranged on the outer wall of the protective cover. When the temperature sensor detects high temperature near the protective cover, it controls the insulating fluid to enter the sealed cavity, and the heat conducting plate presses against the inner wall of the protective cover to isolate and protect the battery body.

[0015] In the above solution, preferably, the battery body is designed as a cuboid, and heat conduction plates for heat dissipation and pleated telescopic parts for sealing are arranged on each outer facade. An interaction channel for communicating between every two adjacent outer facades is opened inside the battery body. The heat sink is designed in a conical shape, and the heat conduction plate presses against the inner wall of the protective cover, and the heat sink blocks the ventilation groove.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a power supply device for an electric motorcycle, which can directly perform direct cooling heat dissipation on the battery body when the temperature of the battery body exceeds the set value, and at the same time cut off the electrical connection between the battery body and the motorcycle during the heat dissipation process, so as to cut off the heat generation source, better dissipate heat from the battery body. At the same time, after the battery is directly cooled emergently, the battery can no longer be used, and it needs to be disassembled and fully inspected before being vacuum packaged again for use, thereby avoiding the continued use of batteries with potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the present invention.

[0018] Figure 2 It is a sectional view of the present invention.

[0019] Figure 3 It is a schematic diagram of the battery body of the present invention.

[0020] Figure 4 It is a schematic diagram of the disassembly of the battery body and the heat dissipation unit of the present invention.

[0021] Figure 5 It is a partially enlarged view of the connection between the bottom heat conduction plate and the battery body of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described in detail below in conjunction with the drawings and the specific embodiments:

[0023] Embodiment 1:

[0024] See Figures 1 - 5, A power supply device for an electric motorcycle, including the electric motorcycle, which is equipped with a central control module and a power supply module. The central control module is used to analyze and control the actions of various components. The power supply module includes a battery body 1, a heat dissipation unit 2, a protective cover 3, and a charging socket 4. The battery body 1 is designed as a cuboid, and a mounting member 13 is provided on the battery body 1. The mounting member 13 includes a guide rod 131 and a mounting plate 132. One end of the guide rod 131 is fixedly arranged on the upper end face of the battery body 1, and the other end is connected to the mounting plate 132, which is arranged on the electric motorcycle through the mounting plate 132. The mounting plate 132 can be fixedly connected to the electric motorcycle by bolts or locked to the electric motorcycle through a quick-release snap connection, and the quick-release snap connection can enable the battery body 1 to be quickly detached from the motorcycle body.

[0025] And a heat dissipation unit 2 is provided on each external surface of the battery body 1. A temperature sensor is arranged inside the battery body 1, and the temperature sensor is connected to the central control module. When the temperature of the battery body 1 exceeds the set value, emergency heat dissipation is started.

[0026] The heat dissipation unit 2 includes a heat conduction plate 21 and a corrugated telescopic member 22. The corrugated telescopic member 22 is a surrounding accordion-type seal, and its two ends are respectively hermetically connected to the outer vertical surface of the battery body 1 and the bottom surface of the heat conduction plate 21, so as to form a sealed cavity between the heat conduction plate 21 and the outer vertical surface of the battery body 1.

[0027] Among them, a heat conduction plate 21 is press-fitted on each outer vertical surface of the battery body 1, and each outer vertical surface and the heat conduction plate 21 are hermetically connected through a corrugated telescopic member 22, so as to form a sealed cavity on each outer vertical surface. In the initial state, the sealed cavity is in a vacuum state, and the bottom surface of the heat conduction plate 21 is press-fitted on the outer vertical surface of the battery body 1. The battery body 1 dissipates heat through the heat conduction plate 21 in the normal state. The heat conduction plate 21 located on the upper end face of the battery body 1 is hermetically slidably arranged on the guide rod 131, so as to ensure that the sealed cavity on the upper end face of the battery body 1 is in a sealed state, and at the same time, the heat conduction plate 21 can move up and down.

[0028] A jack 11 is provided on the lower end face of the battery body 1. A plug 211 is provided on the heat conducting plate 21 located on the lower end face. A groove for elastic limit locking is provided on the inner wall of the jack 11. An elastic telescopic head 212 is slidably provided on the side of the plug 211 in a limited manner. One end of a first elastic member 213 is disposed on the rear end face of the elastic telescopic head 212, and the other end is disposed on the bottom surface of the chute, so that the elastic telescopic head 212 can extend outwards. In the initial state, the heat conducting plate 21 presses against the battery body 1, and the plug 211 is inserted into the jack 11. At this time, the elastic telescopic head 212 elastically abuts against the groove, and is thus elastically limited within the plug. Such a setting enables the plug 211 to be well connected to the jack 11 in the normal state, so that the battery body 1 is electrically connected to the plug 211, and the plug 211 is electrically connected to the motorcycle, thereby realizing power transmission between the battery body 1 and the motorcycle. When the temperature inside the battery body 1 exceeds the set value, when an insulating fluid is introduced into the sealed cavity, the air pressure or hydraulic pressure in the sealed cavity increases, pushing the heat conducting plate 21 to move outwards, that is, the corrugated telescopic member 22 extends outwards. The insulating fluid directly acts on the battery body 1 to dissipate heat emergently. At the same time, the pressing contact between the heat conducting plate 21 and the battery body 1 disappears, and thus the plug 211 leaves from the jack 11, so the electrical connection between the battery body 1 and the motorcycle is cut off.

[0029] A protective cover 3 is fixedly disposed on the battery body 1. A channel opening is provided on the upper end face of the protective cover 3, and is fixedly disposed on the mounting member 13 by welding or bolts through the channel opening. The entire battery body 1 is covered by the protective cover 3, thereby protecting the battery body 1 from being impacted by external objects. The protective cover 3 is directly disposed on the mounting member 13, so that the weight of the protective cover 3 and the impact force when the protective cover 3 is impacted all act on the mounting member 13, and the mounting member 13 is mounted on the motorcycle to avoid the battery body 1 from being stressed, further protecting the battery body 1.

[0030] Radiating fins 214 for increasing the heat dissipation area are provided upright on the outer end face of the heat conducting plate 21. The radiating fins 214 are designed in a conical shape with a large bottom end and a small outer end. On the panel of the protective cover 3 corresponding to each heat conducting plate 21, ventilation grooves 31 adapted to the radiating fins 214 are correspondingly provided, and a moving space is left between the heat conducting plate 21 and the protective cover 3. In the initial state, that is, when the heat conducting plate 21 presses against the battery body 1, the outer ends of the radiating fins 214 are located within the protective cover 3. Thus, when the protective cover 3 is impacted, the impact force will not directly act on the battery body 1, protecting the battery body 1.

[0031] When the temperature of the battery body 1 exceeds the set value, insulating fluid is introduced into the sealed cavity, pushing the heat conduction plate 21 to move outward. The heat conduction plate 21 extends outward and abuts against the inner end face of the protective cover 3. At the same time, the heat dissipation fins 214 are inserted into the ventilation grooves 31. The battery body 1 is cooled by the insulating fluid, and the heat dissipation fins 214 extend outward from the ventilation grooves 31 to dissipate heat for the insulating fluid.

[0032] Every two adjacent end faces of the battery body 1 are connected through the internal interaction channels 12. Branch channel members are provided on the side walls of each heat conduction plate 21. Each channel member is connected to the main channel member 32 located in the protective cover 3 through a pipeline, and the main channel member 32 is connected to the fluid pipeline on the motorcycle, and insulating fluid is injected into each sealed cavity through the channel members.

[0033] The electric motorcycle is also provided with a charging socket 4, which is equipped with a charging connector 41 and a fluid connector 42. The fluid connector 42 is connected to the fluid channel in the motorcycle. The charger for charging the electric motorcycle is equipped with a liquid storage tank storing insulating coolant. When the charger is plugged into the charging socket 4, the liquid storage tank is connected to the fluid connector 42, and a delivery pump is provided on the liquid storage tank.

[0034] When the electric motorcycle is charging and the temperature of the battery body 1 exceeds the set temperature, the delivery pump starts and transports the insulating coolant to each sealed cavity, so that the insulating coolant directly acts on the battery body 1 to dissipate heat for the battery body 1. At the same time, after the insulating coolant is introduced, it pushes the heat conduction plate 21 to abut against the inner wall of the protective cover 3, thereby cutting off the electrical connection between the battery body 1 and the motorcycle, and then no longer charging the battery body 1 to protect the battery body 1.

[0035] Its working principle or usage method is as follows:

[0036] When the electric motorcycle is charging and the temperature of the battery body 1 exceeds the set temperature, the delivery pump starts and transports the insulating coolant to each sealed cavity, so that the insulating coolant directly acts on the battery body 1 to dissipate heat for the battery body 1.

[0037] After all the insulating coolant in the liquid storage tank is introduced into the sealed cavity, it just makes all the heat conduction plates 21 abut against the inner wall of the protective cover 3, thereby dissipating heat for the battery body 1 in all directions. At the same time, after the insulating coolant is introduced, it pushes the heat conduction plate 21 to abut against the inner wall of the protective cover 3, thereby cutting off the electrical connection between the battery body 1 and the motorcycle, and then no longer charging the battery body 1 to protect the battery body 1.

[0038] After the plug 211 leaves the jack 11, the elastic telescopic head 212 extends outwards, and the plug 211 cannot be inserted into the jack 11 again. That is, this battery can no longer be used. It is necessary to disassemble and fully inspect the battery and then perform vacuum packaging again before it can be used, thereby preventing the continued use of batteries with potential safety hazards.

[0039] Embodiment 2:

[0040] The difference compared with Embodiment 1 lies in the type of insulating fluid, the way of introduction, and the storage device, and the rest are the same. Refer to Figures 1 - 5 , specifically, a pressure tank is provided on the electric motorcycle, and powdered dry ice is stored in the pressure tank. The pressure tank is connected to each channel member through a pipeline.

[0041] When the temperature inside the battery body 1 exceeds the set temperature, the central control module controls the pressure tank to open. Then, under the action of pressure, the powdered dry ice is sprayed into each sealed cavity. The powdered dry ice quickly vaporizes when heated, dissipating heat for the battery body 1. At the same time, it pushes the heat conducting plate 21 to abut against the inner wall of the protective cover 3, disconnecting the electrical connection between the battery body 1 and the motorcycle. In this embodiment, power-off and temperature reduction operations can be performed on the battery body during motorcycle charging, parking, and driving.

[0042] In this embodiment, since the powdered dry ice expands rapidly during vaporization, it may damage the corrugated telescopic member 22. Therefore, a pressure relief valve can be provided on the heat conducting plate 21 to avoid damage to the corrugated telescopic member 22.

[0043] Embodiment 3:

[0044] This embodiment makes the following further improvements on the basis of Embodiment 1 or 2: Refer to Figures 1 - 5 , specifically, a temperature sensor is provided on the outer wall of the protective cover 3. That is, when the electric motorcycle catches fire, the temperature sensor detects the high temperature near the protective cover 3, and the central control module controls the insulating fluid to enter the sealed cavity to perform power-off and temperature reduction operations on the battery body 1.

[0045] The heat conducting plate 21 abuts against the inner wall of the protective cover 3, and the battery body 1 is isolated from the protective cover 3 by the insulating fluid. At the same time, the heat conducting plate 21 blocks the ventilation slots 31 on the protective cover 3 to prevent the flame from invading the protective cover 3 and damaging the battery body.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power supply device for an electric motorcycle, characterized in that: The battery body (1) comprises a battery body (1), the battery body (1) is arranged on a motorcycle, and a heat dissipation unit (2) for dissipating heat is arranged on an outer end surface of the battery body (1); The heat dissipation unit (2) comprises a heat conducting plate (21) for dissipating heat, a sealed cavity with a variable volume is formed between the heat conducting plate (21) and the battery body (1) via a folded and retractable member (22) arranged around the heat conducting plate (21), when the sealed cavity is in a vacuum, the folded and retractable member (22) contracts and deforms, and the heat conducting plate (21) is pressed against the battery body (1) for heat conduction, and a plug (211) is provided at the bottom of the heat conducting plate (21) for electrical connection with the battery body (1) after plugging and mating; The heat conducting plate (21) is connected to a connection module, the connection module being used to electrically connect the plug (211) to the motorcycle and to pass an insulating fluid into the sealed cavity for heat dissipation; when the temperature of the battery body (1) exceeds a set value, the connection module passes the insulating fluid into the sealed cavity, the insulating fluid directly acts on the battery body (1) to dissipate heat, the pleated telescopic member (22) expands, and the electrical connection between the plug (211) and the battery body (1) is disconnected.

2. A power supply device for an electric motorcycle according to claim 1, characterized in that: It also comprises a protective cover (3), wherein the protective cover (3) is arranged on the motorcycle, and the battery body (1) is located inside the protective cover (3), and a ventilation slot (31) is provided on the end surface of the protective cover (3).

3. A power supply device for an electric motorcycle according to claim 2, characterized in that: A heat sink (214) for heat dissipation is provided on the outer end surface of the heat conducting plate (21), and the heat sink (214) is adapted to the ventilation groove (31). When the insulating fluid is introduced into the sealed cavity, the heat conducting plate (21) moves outwards and presses against the inner wall of the protective cover (3), and the heat sink (214) is inserted into the ventilation groove (31), with the outer end extending to the outer end surface of the protective cover (3).

4. A power supply device for an electric motorcycle according to any one of claims 1 to 3, characterized in that: The pleated telescopic member (22) is a phoenix-shaped pleated sealing member, which can guide the heat conducting plate (21) during the opening process, so that the heat sink (214) is inserted into the ventilation slot (31).

5. A power supply device for an electric motorcycle according to claim 1, characterized in that: The battery body (1) is provided with a socket (11), and the plug (211) is laterally provided with an elastic retractable head (212); when the plug (211) leaves the socket (11), the elastic retractable head (212) extends out, thereby preventing the plug (211) from being inserted into the socket (11) again.

6. A power supply device for an electric motorcycle according to claim 5, characterized in that: A groove is provided on the inner wall of the socket (11); when the plug (211) is located in the socket (11), the elastic retractable head (212) contacts the groove, elastically locking the plug (211) in the socket (11).

7. A power supply device for an electric motorcycle according to any one of claims 1 to 3, characterized in that: The connection module is in communication with a charging interface (4) provided on the motorcycle, the charging interface (4) being provided with a charging connector (41) and a fluid connector (42), a charger matched with the charging interface (4) being provided with a liquid storage tank, the liquid storage tank storing insulating coolant, the liquid storage tank being connected to the fluid connector (42) during charging, and the insulating coolant being introduced into the sealed cavity for heat dissipation when the temperature of the battery body (1) exceeds a set value.

8. A power supply device for an electric motorcycle according to any one of claims 2 or 3, characterized in that: The motorcycle is provided with a pressure tank, in which powdered dry ice is provided and connected to the fluid channel in the connection module; when the motorcycle is running, if the temperature of the battery body (1) exceeds a set value, the pressure tank opens, and the powdered dry ice is sprayed into the sealed cavity through the fluid channel, where it vaporizes to dissipate heat and rapidly expands the pleated telescopic member (22), thereby disconnecting the electrical connection between the plug (211) and the battery body (1).

9. A power supply device for an electric motorcycle according to claim 8, characterized in that: A temperature sensor is provided on the outer wall of the protective cover (3), and the temperature sensor detects high temperature near the protective cover (3), thereby controlling the insulating fluid to enter the sealed cavity, and the heat conducting plate (21) contacts the inner wall of the protective cover (3), thereby isolating and protecting the battery body (1).

10. A power supply device for an electric motorcycle according to claim 3, characterized in that: The battery body (1) is of rectangular design, and each exterior surface is provided with a heat conducting plate (21) for heat dissipation and a pleated expansion member (22) for sealing, and an interconnecting channel (12) is provided inside the battery body (1) for connecting every two adjacent exterior surfaces; The heat sink (214) is of conical design, and the heat conducting plate (21) is pressed against the inner wall of the protective cover (3) so that the heat sink (214) blocks the ventilation slot (31).

Images