Power supply device for electric motorcycle

Abstract

The invention discloses a power supply device for an electric motorcycle, which comprises a battery body, the battery body is arranged on the motorcycle, a heat dissipation unit for heat dissipation is arranged on the outer end face of the battery body, and the heat dissipation unit comprises a heat conduction plate for heat dissipation. And a sealed cavity with variable volume is formed between the heat conducting plate and the battery body through a folded telescopic piece which is arranged in a surrounding manner. According to the power supply device for the electric motorcycle, when the temperature of the battery body exceeds a set value, direct cooling heat dissipation can be directly carried out on the battery body, and meanwhile, electric connection between the battery body and the motorcycle is cut off in the heat dissipation process, so that a heat production source is cut off, heat dissipation is better carried out on the battery body, and the service life of the battery body is prolonged. Meanwhile, after emergency direct cooling of the battery, the battery cannot be used, and the battery can be used only after being disassembled and completely detected and then subjected to vacuum packaging again, so that the battery with potential safety hazards is prevented from being continuously used.

Description

Technical Field

[0001] The invention relates to the technical field of electric motorcycle power supplies, in particular to a power supply device for an electric motorcycle. Background Art

[0002] An electric motorcycle is a means of transportation that uses electricity as an energy source to drive it. As described in publication number CN219884008U, it includes a battery, a motor and a control device. During driving, the battery needs to be protected to prevent the battery from being hit.

[0003] The battery of an electric motorcycle will generate a lot of heat during use or charging. Especially when charging at high voltage, the heat cannot be released immediately, which may cause the battery to spontaneously combust, causing irreparable damage to the vehicle or personnel. Therefore, there is an urgent need for a device that can perform emergency cooling of the battery when the battery temperature rises sharply, so as to ensure the safety of the vehicle and personnel. Summary of the invention

[0004] The present invention aims at the deficiencies in the prior art and provides a power supply device for an electric motorcycle. When the battery temperature exceeds a set value, the battery body is directly cooled, that is, an insulating heat dissipation fluid is directly sprayed on the battery body, thereby performing emergency heat dissipation on 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, comprising a battery body, the battery body is arranged on the motorcycle, a heat dissipation unit for heat dissipation is arranged on the outer end surface of the battery body, the heat dissipation unit comprises a heat conducting plate for heat dissipation, a sealed cavity with variable volume is formed between the heat conducting plate and the battery body through a pleated and telescopic member arranged around it, when the sealed cavity is in a vacuum, the pleated and telescopic member shrinks and deforms, the heat conducting plate is pressed against the battery body for heat conduction, a plug for electrical connection with the battery body after plugging and matching is arranged at the bottom of the heat conducting plate, a connection module is connected to the heat conducting plate, the connection module is used to electrically connect the plug to the motorcycle and to pass an insulating fluid into the sealed cavity for heat dissipation, when the temperature of the battery body exceeds the set value, the connection module passes an insulating fluid into the sealed cavity, the insulating fluid directly acts on the battery body to dissipate heat, the pleated and telescopic member expands, the sealed cavity space expands, the heat conducting plate is separated from the battery body, and the electrical connection between the plug and the battery body is disconnected.

[0006] Its beneficial effect is that when the temperature of the battery body exceeds the set value, the insulating fluid is sprayed on the battery body to directly cool the battery body and dissipate the heat. 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 the heat of the battery body.

[0007] In the above scheme, preferably, it also includes a protective cover, which is arranged on the motorcycle, and the battery body is located in the protective cover, and a ventilation groove is opened on the end surface of the protective cover.

[0008] In the above scheme, preferably, a heat sink for heat dissipation is provided on the outer end surface of the heat conducting plate, and the heat sink is adapted to the ventilation 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 sink is inserted into the ventilation groove, and the outer end extends to the outer end surface of the protective cover.

[0009] In the above scheme, preferably, the pleated telescopic member is a phoenix-type pleated sealing member, which can guide the heat conduction plate during the opening process so that the heat sink is inserted into the ventilation slot.

[0010] In the above scheme, preferably, a socket is provided on the battery body, and an elastic retractable head is laterally arranged on the plug. When the plug leaves the socket, the elastic retractable head extends out to prevent the plug from being inserted into the socket again.

[0011] In the above scheme, preferably, a groove is provided on the inner wall of the socket, and when the plug is located in the socket, the elastic telescopic head touches the groove to elastically lock the plug in the socket.

[0012] In the above scheme, preferably, the connection module is connected to the charging socket provided on the motorcycle, the charging socket is provided with a charging connector and a fluid connector, the charger matched with the charging socket is provided with a liquid storage tank, the liquid storage tank stores insulating coolant, the liquid storage tank is connected to the fluid connector during charging, and when the temperature of the battery body exceeds the set value, the insulating coolant is passed into the sealed cavity for heat dissipation.

[0013] In the above scheme, preferably, the motorcycle is equipped with a pressure tank, which is filled with powdered dry ice and connected to the fluid channel in the connecting module. When the motorcycle is running, 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, vaporized to dissipate heat, and the pleated telescopic part expands rapidly, thereby disconnecting the electrical connection between the plug and the battery body.

[0014] In the above scheme, preferably, a temperature sensor is provided on the outer wall of the protective cover, and the temperature sensor detects the high temperature near the protective cover, thereby controlling the insulating fluid to enter the sealed cavity, and the heat conductive plate touches the inner wall of the protective cover to isolate and protect the battery body.

[0015] In the above scheme, preferably, the battery body is designed as a rectangular parallelepiped, and each outer facade is provided with a heat conducting plate for heat dissipation and a pleated telescopic part for sealing. An interactive channel is opened inside the battery body to connect every two adjacent outer facades. The heat sink is designed as a cone, and the heat conducting plate is pressed against the inner wall of the protective cover to block 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 cool 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 and better dissipating the heat of the battery body. At the same time, after the battery is urgently directly cooled, the battery cannot be used anymore, and the battery needs to be disassembled for all inspections and then vacuum-sealed again before use, thereby avoiding the continued use of batteries with 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 cross-sectional view of the present invention.

[0019] Figure 3 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 This is a partial enlarged view of the connection between the bottom heat conducting plate and the battery body of the present invention. DETAILED DESCRIPTION

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Embodiment 1:

[0023] See also Figure 1-Figure 5 A power supply device for an electric motorcycle includes an electric motorcycle. The motorcycle includes a central control module and a power module. The central control module is used to analyze and control the actions of various components. The power module includes a battery body 1, a heat dissipation unit 2, a protective cover 3 and a charging interface 4. The battery body 1 is a rectangular parallelepiped design. A rotating member 13 is arranged on the battery body 1. The rotating 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 surface of the battery body 1, and the other end is connected to a mounting plate 132. The guide rod 131 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, and can also be locked on the electric motorcycle by a quick-release clamping connection. The quick-release clamping locking can quickly separate the battery body 1 from the motorcycle body.

[0024] A heat dissipation unit 2 is provided on the external force surface of the battery body 1. A temperature sensor is provided in the battery body 1. The temperature sensor is connected to the central control module. When the temperature of the battery body 1 exceeds a set value, emergency heat dissipation is started.

[0025] The heat dissipation unit 2 includes a heat conducting plate 21 and a pleated expansion member 22. The pleated expansion member 22 is a surrounding phoenix-shaped seal, and its two ends are respectively sealed and connected to the outer facade of the battery body 1 and the bottom surface of the heat conducting plate 21, thereby forming a sealed cavity between the heat conducting plate 21 and the outer facade of the battery body 1.

[0026] A heat conducting plate 21 is pressed against each outer facade of the battery body 1, and each outer facade is sealed and connected to the heat conducting plate 21 through a pleated expansion member 22, and a sealed cavity is set on each outer facade. In the initial state, the sealed cavity is in a vacuum state, and the bottom surface of the heat conducting plate 21 is pressed against the outer facade of the battery body 1. The battery body 1 dissipates heat through the heat conducting plate 21 in the normal state, and the heat conducting plate 21 located on the upper end surface of the battery body 1 is sealed and slidably set on the guide rod 131, thereby ensuring that the sealed cavity on the upper end surface of the battery body 1 is in a sealed state, and the heat conducting plate 21 can move up and down.

[0027] A socket 11 is provided on the lower end surface of the battery body 1, and a plug 211 is provided on the heat conducting plate 21 located on the lower end surface. A groove for elastic limit locking is provided on the inner wall of the socket 11, and an elastic expansion head 212 is provided on the upper limit sliding on the side of the plug 211. One end of the first elastic member 213 is provided on the rear end surface of the elastic expansion head 212, and the other end is provided on the bottom surface of the slide groove, so that the elastic expansion head 212 can extend outward. In the initial state, the heat conducting plate 21 is pressed against the battery body 1, and the plug 211 is inserted into the socket 11. At this time, the elastic expansion head 212 elastically contacts the groove, and then elastically limits the position in the plug. Such a setting enables the plug 2 11 is well connected with the socket 11 in normal state, and then the battery body 1 is electrically connected with the plug 211, and the plug 211 is electrically connected with the motorcycle, so that the power transfer between the battery body 1 and the motorcycle is realized. When the temperature inside the battery body 1 exceeds the set value, when the 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 outward, that is, the pleated telescopic member 22 extends outward, and the insulating fluid directly acts on the battery body 1 to dissipate heat urgently. At the same time, the pressure contact between the heat conducting plate 21 and the battery body 1 disappears, and then the plug 211 leaves from the socket 11, thereby cutting off the electrical connection between the battery body 1 and the motorcycle.

[0028] The battery body 1 is fixedly provided with a protective cover 3, and a passage opening is opened on the upper end surface of the protective cover 3, which is fixed to the rotating member 13 through the passage opening by welding or bolts. The battery body 1 is completely covered by the protective cover 3, thereby protecting the battery body 1 from being hit by external objects. The protective cover 3 is directly arranged on the rotating member 13, so that the weight of the protective cover 3 and the impact force when the protective cover 3 is hit all act on the rotating member 13. The rotating member 13 is installed on the motorcycle to prevent the battery body 1 from being subjected to force, thereby further protecting the battery body 1.

[0029] The outer end surface of the heat conducting plate 21 is provided with an upright heat sink 214 for increasing the heat dissipation area, and the heat sink 214 is a conical design with a larger bottom end and a smaller outer end. On the panel of the protective cover 3 corresponding to each heat conducting plate 21, a ventilation slot 31 adapted to the heat sink 214 is opened, 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 is pressed against the battery body 1, the outer end of the heat sink 214 is located in the protective cover 3, and then when the protective cover 3 is hit, the impact force will not directly act on the battery body 1, thereby protecting the battery body 1.

[0030] When the temperature of the battery body 1 exceeds the set value, an insulating fluid is introduced into the sealed cavity to push the heat conducting plate 21 to move outward. The heat conducting plate 21 extends outward and contacts the inner end surface of the protective cover 3. At the same time, the heat sink 214 is inserted into the ventilation groove 31. The battery body 1 is cooled by the insulating fluid, and the heat sink 214 extends outward from the ventilation groove 31 to dissipate heat for the insulating fluid.

[0031] Every two adjacent end faces of the battery body 1 are connected through an internal interactive channel 12, and a sub-channel member is provided on the side wall of each heat conducting plate 21, and each channel member is connected to a main channel member 32 located on the protective cover 3 through a pipeline, and the main channel member 32 is connected to the fluid pipeline on the motorcycle, and the insulating fluid is injected into each sealed cavity through the channel member.

[0032] The electric motorcycle is also provided with a charging socket 4 equipped with a charging connector 41 and a fluid connector 42, the fluid connector 42 is connected to the fluid channel in the motorcycle, and the charger used to charge 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.

[0033] When the electric motorcycle is being charged, when the temperature of the battery body 1 exceeds the set temperature, the delivery pump is started to deliver 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, the heat conducting plate 21 is pushed to contact the inner wall of the protective cover 3, so that the electrical connection between the battery body 1 and the motorcycle is cut off, and the battery body 1 is no longer charged, thereby protecting the battery body 1.

[0034] Its working principle or usage is as follows: When the electric motorcycle is being charged, when the temperature of the battery body 1 exceeds the set temperature, the delivery pump is started to deliver the insulating coolant to each sealed cavity, so that the insulating coolant directly acts on the battery body 1 to dissipate heat from the battery body 1 .

[0035] After all the insulating coolant in the liquid storage tank is passed into the sealed cavity, all the heat conducting plates 21 are just in contact with the inner wall of the protective cover 3, thereby dissipating the heat of the battery body 1 in all directions. At the same time, after the insulating coolant is passed in, the heat conducting plates 21 are pushed to contact the inner wall of the protective cover 3, thereby cutting off the electrical connection between the battery body 1 and the motorcycle, and then the battery body 1 is no longer charged, thereby protecting the battery body 1.

[0036] After the plug 211 leaves the socket 11, the elastic retractable head 212 extends outward, and the plug 211 cannot be inserted into the socket 11 again, that is, the battery can no longer be used. The battery needs to be disassembled and fully inspected and then vacuum-sealed again before use, thereby preventing the battery with safety hazards from being used continuously.

[0037] Embodiment 2:

[0038] Compared with Example 1, the difference lies in the type, introduction method and storage device of the insulating fluid, and the rest are the same, see Figure 1-Figure 5 Specifically, a pressure tank is provided on the electric motorcycle, powdered dry ice is stored in the pressure tank, and the pressure tank is connected to each channel member through a pipeline.

[0039] When the temperature in the battery body 1 exceeds the set temperature, the central control module controls the pressure tank to open, and then under the action of pressure, the powdered dry ice is sprayed into each sealed cavity, and the powdered dry ice is quickly vaporized by heat to dissipate heat for the battery body 1, and at the same time, the heat conducting plate 21 is pushed to contact the inner wall of the protective cover 3, so that the electrical connection between the battery body 1 and the motorcycle is disconnected. In this embodiment, the battery body can be powered off and cooled down during the charging, parking and operation of the motorcycle.

[0040] In the present embodiment, since the powdered dry ice expands rapidly during the gasification process, it may damage the pleated telescopic member 22 . Therefore, a pressure relief valve may be provided on the heat conducting plate 21 , thereby preventing the pleated telescopic member 22 from being damaged.

[0041] Embodiment 3:

[0042] This embodiment makes the following further improvements on the basis of embodiment 1 or 2: Figure 1-Figure 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 high temperature near the protective cover 3, and the central control module controls the insulating fluid to enter the sealed cavity to cut off the power and cool down the battery body 1.

[0043] The heat conducting plate 21 contacts 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.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions 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), the protective cover (3) being arranged on the motorcycle, the battery body (1) being located inside the protective cover (3), and a ventilation slot (31) being 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).

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