Electric motorcycle, thermal management device, and thermal management system

Abstract

The invention provides an electric motorcycle. The electric motorcycle comprises a motorcycle body, a suspension assembly, a driving assembly, a walking assembly, a power source assembly and a charging interface. The power assembly comprises a battery pack, and the charging interface is used for being connected with a power supply device outside the electric motorcycle. The electric motorcycle further comprises a heat management assembly, the heat management assembly comprises a circulating pipeline, and the circulating pipeline is used for circulating temperature adjusting liquid; the circulating pipeline comprises a first port and a second port, pipeline connectors are arranged on the first port and the second port and used for enabling the circulating pipeline to be in butt joint with the heat management device, the heat management device is located outside the electric motorcycle and used for providing temperature adjusting liquid, and the temperature adjusting liquid enters the circulating pipeline through the first port and is used for adjusting the temperature of the circulating pipeline. And the heat flows back to the heat management device through the second port. The electric motorcycle has the advantages of being high in temperature adjusting capacity of the battery pack, simple in structure and light in weight.

Description

Technical Field

[0001] The present application relates to the technical field of electric motorcycles, and in particular to an electric motorcycle, a thermal management device and a thermal management system. Background Art

[0002] With the popularization of electric motorcycles, electric motorcycles will involve some specific usage scenarios, such as competition promotion scenarios. In this scenario, during a single full-charge and emptying process of the battery pack of the electric motorcycle, the temperature rise of the battery pack under natural heat dissipation conditions will often not exceed the allowable temperature threshold of the battery. However, if it is fully charged immediately and immediately enters the next competition stage, the battery pack will inevitably enter a high-temperature protection state, thus affecting its use.

[0003] In related technologies, there are usually two solutions:

[0004] Solution 1, natural cooling solution, after the battery pack is emptied once, it is left to stand for a long time to allow the internal temperature of the battery to drop to a specific threshold. The advantages of this solution are that the electric motorcycle has a simple structure, light weight and low cost; the disadvantages are poor heat dissipation and cooling effect, and the heat dissipation time usually takes more than a dozen or even dozens of hours, which seriously affects the use. Take a certain type of off-road racing car of our company as an example. It adopts the traditional natural heat dissipation design. After the discharge is completed, it must be left to stand for more than 40 minutes before entering the charging stage. After the charging is completed, it must be left to stand for another 5.6 hours before participating in the next race, which seriously restricts the use time of the electric motorcycle.

[0005] Option 2, the traditional liquid cooling solution, during the use of the battery (discharging and charging), due to the strong heat exchange of the liquid cooling system, the battery is always kept within a specific temperature range. The advantage of this solution is good heat dissipation effect, and its disadvantage is that it increases the weight of the vehicle, has high cost, and has a complex structure. It mainly includes a liquid cooling circuit in the battery pack (including liquid cooling plates (or serpentine tubes), liquid cooling pipelines and joints and other components) and an external liquid cooling circuit (including boost pumps, heat exchangers, heat pumps, fans and other components). This is not conducive to the design and use of two-wheeled motorcycles that require space for the installation of the vehicle. Especially for racing vehicles, the requirements for the weight and volume of the vehicle are extremely strict, which further highlights the inapplicability of traditional liquid cooling solutions.

[0006] In view of the above problems, it is necessary to propose a technical solution to solve the problem that the thermal management solution of the electric motorcycle during charging in the related technology is difficult to be compatible with rapid heat dissipation and streamlined electric motorcycle structure. Summary of the invention

[0007] The purpose of the present application is to provide a technical solution to solve the problem in the related art that the thermal management solution of an electric motorcycle during charging is difficult to be compatible with rapid heat dissipation and a streamlined electric motorcycle structure.

[0008] Based on the above purpose, the present application provides an electric motorcycle, including: a body, a suspension assembly, a drive assembly, a running assembly, a power assembly and a charging interface. The suspension assembly is at least partially connected to the body; the drive assembly is at least partially connected to the body; the running assembly is at least partially connected to the drive assembly; the power assembly is at least partially connected to the body, the power assembly includes a battery pack, and the battery pack supplies power to the drive assembly; the charging interface is at least partially connected to the power assembly, and when the electric motorcycle is charged, the charging interface is connected to the power supply device outside the electric motorcycle; the electric motorcycle also includes a thermal management component, the thermal management component includes a circulation pipeline, the circulation pipeline is used to circulate a temperature regulating liquid, and the temperature regulating liquid is used to regulate the temperature of the battery pack; the circulation pipeline includes a first port and a second port, and a pipeline interface is provided on the first port and the second port, and the pipeline interface is used to connect the circulation pipeline with the thermal management device, the thermal management device is located outside the electric motorcycle, and the thermal management device is used to provide a temperature regulating liquid, and the temperature regulating liquid enters the circulation pipeline through the first port and flows back to the thermal management device through the second port.

[0009] Furthermore, the power supply assembly also includes a battery management unit, which is used to monitor the temperature and charging and discharging conditions of the battery pack;

[0010] Electric motorcycles also include:

[0011] a control unit, which is in communication connection with the battery management unit, and the control unit is used to generate a cooling request, wherein the cooling request is generated when the battery management unit detects that the temperature of the battery pack is greater than or equal to a first preset threshold value, and the electric motorcycle is in a connected state with a power supply device outside the electric motorcycle;

[0012] a communication unit, the communication unit being communicatively connected to the control unit and the thermal management device respectively, and the communication unit being used to send a temperature reduction request to the thermal management device, so that the thermal management device delivers a temperature regulating liquid to the first port in response to the temperature reduction request;

[0013] After the temperature regulating liquid absorbs the heat of the battery pack in the circulation pipeline, the temperature regulating liquid flows back to the thermal management device through the second port, and the temperature regulating liquid releases heat in the thermal management device.

[0014] Further, the control unit is used to generate a heating request, the heating request is generated when the battery management unit detects that the temperature of the battery pack is less than or equal to a second preset threshold, and the electric motorcycle is in a connected state with a power supply device external to the electric motorcycle, and the second preset threshold is less than the first preset threshold;

[0015] The communication unit is used to send a heating request to the thermal management device, so that the thermal management device heats the temperature regulating liquid in response to the heating request and transmits the heated temperature regulating liquid to the first port. The temperature regulating liquid releases heat in the circulation pipeline to heat the battery pack.

[0016] Furthermore, the control unit is also used to set the temperature range.

[0017] When the control unit generates a heating request, the control unit monitors the temperature of the battery pack through the battery management unit. When the battery pack is heated to within the temperature range, the control unit sends an instruction to the battery management unit to allow the battery pack to start charging.

[0018] The present application also provides a thermal management device, which is used for thermal management of a battery pack when an electric motorcycle is charging. The thermal management device includes: a liquid storage component, a pipeline component and a liquid pump.

[0019] The liquid storage component is used for storing the temperature regulating liquid;

[0020] The pipeline assembly includes a first pipeline, a second pipeline and a pipeline joint, one end of the first pipeline and the second pipeline are connected to the liquid storage assembly, the other end of the first pipeline and the second pipeline are connected to the pipeline joint, and the pipeline joint is used to connect to the pipeline interface of the electric motorcycle;

[0021] The liquid pump is connected to the first pipeline and is used to pump the temperature regulating liquid to the electric motorcycle. The temperature regulating liquid enters the electric motorcycle through the first pipeline, exchanges heat with the battery pack of the electric motorcycle, and then flows back to the liquid storage assembly through the second pipeline.

[0022] Furthermore, the thermal management device also includes:

[0023] A heat exchange component is connected to the first pipeline, and the temperature regulating liquid performs heat exchange at the heat exchange component;

[0024] Heat pump assembly, the heat pump assembly is connected with the heat exchange assembly,

[0025] The heat pump assembly includes a first mode and a second mode. When the heat pump assembly is in the first mode, the heat pump assembly performs cooling, so that the temperature of the temperature regulating liquid decreases after passing through the heat exchange assembly. When the heat pump assembly is in the second mode, the heat pump assembly performs heating, so that the temperature of the temperature regulating liquid increases after passing through the heat exchange assembly.

[0026] Furthermore, the thermal management device also includes:

[0027] Air pump;

[0028] A three-way valve, the three-way valve comprises a first inlet, a second inlet and an outlet, the first inlet is connected to the first pipeline, the second inlet is connected to the air pump, and the outlet is connected to the pipeline joint;

[0029] The liquid storage assembly comprises a box body, which is used to store the temperature regulating liquid. The box body is provided with a pressure relief valve, which is used to balance the air pressure inside and outside the box body.

[0030] Furthermore, the thermal management device also includes a control component,

[0031] The control component is in communication connection with the electric motorcycle. The control component controls the valve body at the first inlet of the three-way valve to open and controls the liquid pump to open in response to a request sent by the electric motorcycle.

[0032] The control component is also used to control the liquid pump to shut down. When the liquid pump is shut down, the control component controls the valve body at the first inlet to close, opens the valve body at the second inlet, and controls the air pump to start, so that the temperature regulating liquid in the circulation pipeline of the electric motorcycle is discharged back to the liquid storage component.

[0033] Further, the request sent by the electric motorcycle includes a cooling request and a heating request;

[0034] When the control component receives a cooling request sent by the electric motorcycle, the control component controls the heat pump component to enter the first mode.

[0035] When the control component receives a heating request sent by the electric motorcycle, the control component controls the heat pump component to enter the second mode.

[0036] Furthermore, the thermal management device also includes a temperature detection component, which is used to detect the temperature of the temperature regulating liquid in the liquid storage component and the temperature of the temperature regulating liquid after heat exchange by the heat exchange component;

[0037] The thermal management device also includes a control component, which is used to set a temperature range. The control component is also used to control the heat pump component so that the temperature of the temperature regulating liquid after heat exchange by the heat exchange component is within the temperature range.

[0038] The present application also provides a thermal management system, which includes the electric motorcycle as described above, and uses the thermal management device as described above to perform thermal management on a battery pack when the electric motorcycle is being charged.

[0039] In summary, the present application provides an electric motorcycle, which includes a thermal management component that can be docked with a thermal management device outside the electric motorcycle to receive a temperature regulating fluid provided by the thermal management device, thereby enabling the electric motorcycle to have a better temperature regulating capability when charging. In addition, according to the solution provided in the embodiment of the present application, there is no need to reserve space on the electric motorcycle to store the temperature regulating fluid, which greatly reduces the difficulty of arranging the heat dissipation system of the electric motorcycle, simplifies the structure of the electric motorcycle, and avoids increasing the weight of the electric motorcycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A schematic diagram of an electric motorcycle provided in an embodiment of the present application;

[0041] Figure 2A schematic diagram of a thermal management component provided in an embodiment of the present application;

[0042] Figure 3 A schematic diagram of a module of an electric motorcycle provided in an embodiment of the present application;

[0043] Figure 4 A schematic diagram of a thermal management device provided in the first embodiment of the present application;

[0044] Figure 5 A schematic diagram of the connection between the thermal management device provided in an embodiment of the present application and an electric motorcycle;

[0045] Figure 6 A schematic diagram of a thermal management device provided in a second embodiment of the present application;

[0046] Figure 7 A schematic diagram of a thermal management device provided in a third embodiment of the present application;

[0047] Figure 8 A schematic diagram of a thermal management device provided in a fourth embodiment of the present application;

[0048] Fig. 9 Schematic diagram of the thermal management system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0049] The present application will be described in detail below in conjunction with the specific implementation modes shown in the accompanying drawings, but these implementation modes do not limit the present application. Structural, methodological, or functional changes made by ordinary technicians in the field based on these implementation modes are included in the protection scope of the present application.

[0050] like Figure 1 As shown, an embodiment of the present application provides an electric motorcycle 100 , which includes a vehicle body 11 , a suspension assembly 12 , a drive assembly 13 , a travel assembly 14 , a power supply assembly 15 and a charging interface 16 .

[0051] Among them, the suspension component 12 is at least partially connected to the vehicle body 11, the drive component 13 is at least partially connected to the vehicle body 11, the travel component 14 is at least partially connected to the drive component 13, the power supply component 15 is at least partially connected to the vehicle body 11, the power supply component 15 includes a battery pack, the battery pack supplies power to the drive component 13, the charging interface 16 is at least partially connected to the power supply component 15, and when the electric motorcycle 100 is charged, the charging interface 16 is connected to a power supply device outside the electric motorcycle 100.

[0052] As an optional implementation, the electric motorcycle 100 provided in the embodiment of the present application further includes a thermal management component 17. The thermal management component 17 includes a circulation pipeline 171, and the circulation pipeline 171 is used to circulate a temperature regulating liquid, and the temperature regulating liquid is used to regulate the temperature of the battery pack.

[0053] like Figure 2 As shown, the circulation pipeline 171 includes a first port 1711 and a second port 1712, and a pipeline interface 172 is provided on the first port 1711 and the second port 1712, and the pipeline interface 172 is used to connect the circulation pipeline 171 with the thermal management device 300. The thermal management device 300 is located outside the electric motorcycle 100, and the thermal management device 300 is used to provide a temperature regulating liquid, and the temperature regulating liquid enters the circulation pipeline 171 through the first port 1711 and flows back to the thermal management device 300 through the second port 1712.

[0054] As an optional implementation, the circulation pipeline 171 can be arranged around the battery pack or pass through the inside of the battery pack. The temperature regulating liquid provided by the heat pipe device can enter the circulation pipeline 171 through the first port 1711, and the temperature regulating liquid can flow back to the thermal management device 300 from the second port 1712 after heat exchange in the circulation pipeline 171, so as to adjust the temperature of the battery pack.

[0055] According to the above description, the electric motorcycle 100 provided by the present application includes a thermal management component 17, which can be connected to the thermal management device 300 outside the electric motorcycle 100, and receive the temperature regulating liquid provided by the thermal management device 300, so that the electric motorcycle 100 has a better temperature regulating ability when charging. In addition, according to the solution provided by the embodiment of the present application, there is no need to reserve space for storing the temperature regulating liquid on the electric motorcycle 100, which greatly reduces the difficulty of arranging the heat dissipation system of the electric motorcycle 100, simplifies the structure of the electric motorcycle 100, and avoids increasing the weight of the electric motorcycle 100.

[0056] like Figure 3 As shown, as an optional implementation, the power supply assembly 15 also includes a battery management unit 151, which can be used to monitor the temperature and charging and discharging conditions of the battery pack.

[0057] The electric motorcycle 100 further includes a control unit 18 and a communication unit 19 .

[0058] The control unit 18 is in communication connection with the battery management unit 151, and the control unit 18 is used to generate a cooling request. The cooling request is generated when the battery management unit 151 detects that the temperature of the battery pack is greater than or equal to a first preset threshold, and the electric motorcycle 100 is in a connected state with a power supply device 21 outside the electric motorcycle 100.

[0059] The communication unit 19 is respectively connected to the control unit 18 and the thermal management device 300 for communication. The communication unit 19 is used to send a cooling request to the thermal management device 300 so that the thermal management device 300 delivers the temperature regulating liquid to the first port 1711 in response to the cooling request.

[0060] After the temperature regulating liquid absorbs the heat of the battery pack in the circulation pipeline 171 , the temperature regulating liquid flows back to the thermal management device 300 through the second port 1712 , and the temperature regulating liquid releases heat in the thermal management device 300 .

[0061] Specifically, the first preset threshold value can be set according to actual needs. When the temperature of the battery pack is higher than the first preset threshold value, it can be understood that the temperature of the battery pack is too high, and the battery pack needs to be cooled to ensure the safety of the electric motorcycle 100. The control unit 18 can generate a cooling request, so that the thermal management device 300 delivers a temperature regulating liquid to the first port 1711 of the circulation pipeline 171. The temperature regulating liquid can absorb the heat of the battery pack in the circulation pipeline 171 and flow out from the second port 1712, so that the heat of the battery pack can be taken out, thereby achieving the purpose of cooling the battery pack.

[0062] Furthermore, the thermal management device 300 can perform cooling in response to the cooling request, so that the temperature regulating liquid releases heat, so that the temperature of the temperature regulating liquid input to the first port 1711 is at a lower level, thereby enhancing the temperature regulating effect of the temperature regulating liquid on the battery pack, and achieving the purpose of quickly cooling the battery pack. By adjusting the cooling power of the thermal management device 300, the heat dissipation efficiency of the battery pack can be adjusted.

[0063] As an optional implementation, the control unit 18 is used to generate a heating request, which is generated when the battery management unit 151 detects that the temperature of the battery pack is less than or equal to a second preset threshold, and the electric motorcycle 100 is in a connected state with a power supply device 21 outside the electric motorcycle 100, and the second preset threshold is less than the first preset threshold.

[0064] The communication unit 19 is used to send a heating request to the thermal management device 300, so that the thermal management device 300 heats the temperature regulating liquid in response to the heating request and delivers the heated temperature regulating liquid to the first port 1711. The temperature regulating liquid releases heat in the circulation pipeline 171 to heat the battery pack.

[0065] As an optional implementation, the control unit 18 is also used to set a temperature range. When the control unit 18 generates a heating request, the control unit 18 monitors the temperature of the battery pack through the battery management unit 151. When the battery pack is heated to within the temperature range, the control unit 18 sends a command to the battery management unit 151 to allow the battery pack to start charging.

[0066] Specifically, the second preset threshold can be set according to actual needs. When the battery pack temperature is less than or equal to the second preset threshold, it can be understood that the battery pack temperature is too low. At this time, direct charging is likely to produce a lithium plating effect, which may eventually lead to diaphragm puncture and cause a short circuit accident.

[0067] The control unit 18 can generate a heating request, so that the thermal management device 300 delivers a temperature regulating liquid to the first port 1711 of the circulation pipeline 171. The temperature regulating liquid can release heat in the circulation pipeline 171 to increase the temperature of the battery pack. When the battery pack is heated to a suitable temperature range, charging can be performed, thereby ensuring the safety of the electric motorcycle 100.

[0068] Furthermore, the thermal management device 300 can heat the temperature regulating liquid so that the temperature of the temperature regulating liquid input to the first port 1711 is higher than the temperature of the battery pack, thereby enhancing the temperature regulating effect of the temperature regulating liquid on the battery pack. By adjusting the heating power of the thermal management device 300, the heating efficiency of the battery pack can be adjusted.

[0069] According to the above description, the electric motorcycle 100 provided in the embodiment of the present application has the advantages of strong temperature regulation capability for the battery pack, as well as a simple structure and light weight.

[0070] like Figure 4 As shown, the present application also provides a thermal management device 300 , which is used for thermal management of a battery pack when the electric motorcycle 100 is charging. The thermal management device 300 includes: a liquid storage component 31 , a pipeline component 32 and a liquid pump 33 .

[0071] The liquid storage component 31 is used to store the temperature regulating liquid.

[0072] The pipeline assembly 32 includes a first pipeline 321, a second pipeline 322 and a pipeline connector 323. One end of the first pipeline 321 and the second pipeline 322 are connected to the liquid storage assembly 31, and the other end of the first pipeline 321 and the second pipeline 322 are connected to the pipeline connector 323. The pipeline connector 323 is used to connect to the pipeline interface 172 of the electric motorcycle 100.

[0073] The liquid pump 33 is connected to the first pipeline 321, and is used to pump the temperature regulating liquid to the thermal management component 17 of the electric motorcycle 100. The thermal management component 17 includes a circulation pipeline 171, and the circulation pipeline 171 includes a first port 1711 and a second port 1712 connected to the pipeline interface 172. When the pipeline connector 323 is connected to the pipeline interface 172 of the electric motorcycle 100, one end of the first pipeline 321 is connected to the first port 1711, and one end of the second pipeline 322 is connected to the second port 1712. The temperature regulating liquid circulates in the circulation pipeline 171 to regulate the temperature of the battery pack.

[0074] like Figure 5 , which shows a schematic diagram of the electric motorcycle 100 provided in an embodiment of the present application being connected to the thermal management device 300 when charging. Specifically, the charging device 200 includes a charging connector 22 and a power supply device 21, and the charging connector 22 is connected to the power supply device 21. The user connects the charging connector 22 of the charging device 200 with the charging interface 16 of the electric motorcycle 100 to connect the battery pack to the power supply device 21, so that the power supply device 21 can charge the battery pack.

[0075] When the electric motorcycle 100 is charging, it is also connected to the thermal management device 300 provided in the embodiment of the present application, and the thermal management device 300 can adjust the temperature of the battery pack. Specifically, the thermal management device 300 can deliver a temperature regulating liquid to the electric motorcycle 100, and the temperature regulating liquid can perform heat exchange in the circulation pipeline 171 of the electric motorcycle 100 to achieve the purpose of regulating the temperature of the battery pack. In this way, the battery thermal management system structure of the electric motorcycle 100 can be greatly simplified, and only the circulation pipeline 171 needs to be arranged inside the electric motorcycle 100, so that the weight of the electric motorcycle 100 will be greatly reduced, and the volume will also be greatly reduced. At the same time, it can also ensure that the electric motorcycle 100 has excellent heat dissipation performance and ensure the safety of the electric motorcycle 100.

[0076] like Figure 6 As shown, it shows a schematic diagram of a thermal management device 300 provided in an embodiment of the present application. As an optional implementation, the thermal management device 300 further includes a heat exchange component 34, a heat pump component 35 and a control component 36.

[0077] The heat exchange component 34 is connected to the first pipeline 321, and the temperature regulating liquid performs heat exchange at the heat exchange component 34. The heat pump component 35 is connected to the heat exchange component 34.

[0078] The control component 36 can control the working mode of the heat pump component 35. The heat pump component 35 includes a first mode and a second mode. When the heat pump component 35 is in the first mode, the heat pump component 35 performs cooling, so that the temperature of the temperature regulating liquid decreases after passing through the heat exchange component 34. When the heat pump component 35 is in the second mode, the heat pump component 35 performs heating, so that the temperature of the temperature regulating liquid increases after passing through the heat exchange component 34.

[0079] like Figure 7 As shown, as another optional implementation, the thermal management device 300 also includes a temperature detection component 37, which is used to detect the temperature of the temperature regulating liquid in the liquid storage component 31 and the temperature of the temperature regulating liquid after heat exchange by the heat exchange component 34.

[0080] The control component 36 can be used to set the temperature range, and the control component 36 is also used to control the heat pump component 35. The control component 36 can select the working mode of the heat pump component according to the temperature of the temperature regulating liquid in the liquid storage component 31, and heat or cool the temperature regulating liquid so that the temperature of the temperature regulating liquid after heat exchange by the heat exchange component 34 is within the temperature range. For the sake of convenience, this working mode of the thermal management device 300 that controls the temperature of the temperature regulating liquid to be within the preset temperature range is called a constant temperature mode.

[0081] Specifically, the temperature range set by the control component 36 can be set according to actual needs, and the appropriate charging temperature of the battery pack can be used as a reference. For example, the temperature range can be set to 15°C to 25°C, and the temperature regulating liquid output by the thermal management device 300 to the electric motorcycle 100 is in this temperature range. The temperature regulating liquid can perform heat exchange in the circulation pipeline 171 of the electric motorcycle 100 to adjust the battery pack temperature of the electric motorcycle 100, that is, if the battery pack temperature is higher than the temperature of the temperature regulating liquid, the temperature regulating liquid absorbs the heat of the battery pack, and if the battery pack temperature is lower than the temperature of the temperature regulating liquid, the temperature regulating liquid releases heat, so that the battery pack temperature can be maintained at a suitable charging temperature, so that the battery pack has a better charging efficiency and ensures the safety of the battery pack.

[0082] As an optional implementation, the thermal management device 300 can be connected to the electric motorcycle 100 by communication. For example, a communication module (not shown) can be provided on the thermal management device 300, and data can be transmitted between the communication module and the communication unit 19 on the electric motorcycle 100. The communication module can be provided separately or integrated with the control component 36. The communication module can be any one of Bluetooth, wifi, etc.

[0083] The control component 36 can be connected to the electric motorcycle 100 through the communication module, and the control component 36 can respond to the request of the electric motorcycle 100 and select the working mode of the heat pump component 35. Specifically, the request sent by the electric motorcycle 100 includes a cooling request and a heating request. When the control component 36 receives the cooling request sent by the electric motorcycle 100, the control component 36 controls the heat pump component 35 to enter the first mode to enhance the heat dissipation efficiency of the battery pack. When the control component 36 receives the heating request sent by the electric motorcycle 100, the control component 36 controls the heat pump component 35 to enter the second mode to quickly raise the temperature of the battery pack to a suitable range.

[0084] Specifically, when the electric motorcycle 100 is charging, the thermal management device 300 is connected to the electric motorcycle 100. If the temperature of the battery pack of the electric motorcycle 100 exceeds the first preset threshold at this time, it can be considered that the temperature of the battery pack is too high. At this time, the electric motorcycle 100 can send a cooling request to the thermal management device 300. The thermal management device 300 can respond to the cooling request to cool down and reduce the temperature of the temperature regulating liquid, thereby enhancing the cooling effect on the battery pack. When the battery pack temperature drops to a suitable charging temperature, the thermal management device 300 can enter a constant temperature mode to maintain the battery pack temperature in a suitable charging temperature range.

[0085] Similarly, if the battery pack temperature of the electric motorcycle 100 is lower than the second preset threshold at this time, it can be considered that the temperature of the battery pack is too low. At this time, the electric motorcycle 100 can send a heating request to the thermal management device 300. The thermal management device 300 can respond to the heating request to heat and increase the temperature of the temperature regulating fluid, thereby enhancing the heating effect on the battery pack. When the battery pack temperature rises to a suitable charging temperature, the electric motorcycle 100 allows the battery pack to charge. In this way, the preparation time before the battery pack is charged can be shortened. In addition, when the battery pack temperature rises to a suitable charging temperature, the thermal management device 300 can also enter a constant temperature mode to maintain the battery pack temperature in a suitable charging temperature range.

[0086] As an optional implementation, the pipe connector 323 can be integrated with the charging connector 22 of the charging device 200, and accordingly, the charging interface 16 on the electric motorcycle 100 and the pipe connector 172 are arranged close to each other, so that the user can connect the charging connector 22 of the charging device 200 with the charging interface 16 of the electric motorcycle 100 and the pipe connector 323 of the thermal management device 300 with the pipe connector 172 of the electric motorcycle 100 with only one connection action, which is convenient for the user to use. At the same time, it can also prevent the user from forgetting to connect the thermal management device 300 with the electric motorcycle 100 when charging the electric motorcycle 100 provided in the embodiment of the present application, thereby ensuring the safety of the electric motorcycle 100 when charging.

[0087] like Figure 8 As shown, as an optional implementation, the thermal management device 300 further includes an air pump 39 and a three-way valve 38. The three-way valve 38 includes a first inlet 381, a second inlet 382 and an outlet 383, the first inlet 381 is connected to the first pipeline 321, the second inlet 382 is connected to the air pump 39, and the outlet 383 is connected to the pipeline connector 323.

[0088] The control component 36 is in communication connection with the electric motorcycle 100 . In response to a request sent by the electric motorcycle 100 , the control component 36 controls the valve body at the first inlet 381 of the three-way valve 38 to open, and controls the liquid pump 33 to open.

[0089] The control component 36 is also used to control the liquid pump 33 to be turned off. When the liquid pump 33 is turned off, the control component 36 controls the valve body at the first inlet 381 to be closed, opens the valve body at the second inlet 382, ​​and controls the air pump 39 to start, so that the temperature regulating liquid in the circulation pipeline 171 of the electric motorcycle 100 is discharged back to the liquid storage component 31.

[0090] Specifically, when the thermal management device 300 is connected to the electric motorcycle 100 and the battery pack of the electric motorcycle 100 needs to be temperature-regulated, the control component 36 can control the valve body at the first inlet 381 of the three-way valve 38 to open, and control the liquid pump 33 to open, so that the thermal management device 300 can deliver temperature regulating liquid to the electric motorcycle 100 to regulate the temperature of the battery pack.

[0091] When the electric motorcycle 100 stops charging and the temperature of the battery pack is within the allowable range, the thermal management device 300 can end the temperature regulation of the battery pack. At this time, the control component 36 can control the valve body at the first inlet 381 of the three-way valve 38 to close, and control the liquid pump 33 to close, so that the thermal management device 300 stops delivering the temperature regulating liquid to the electric motorcycle 100. In addition, the control component 36 also controls the valve body at the second inlet 382 of the three-way valve 38 to open, and controls the air pump 39 to open. The air pump 39 works to blow air to the first port 1711 of the circulation pipeline 171, so that the residual temperature regulating liquid in the circulation pipeline 171 is discharged back to the liquid storage component 31 from the second port 1712 of the circulation pipeline 171.

[0092] As an optional implementation, the liquid storage assembly 31 includes a box 311, the box 311 is used to store the temperature regulating liquid, and the box 311 is provided with a pressure relief valve 312, and the pressure relief valve 312 is used to balance the air pressure inside and outside the box 311. In this way, it is possible to prevent the box 311, the first pipeline 321 or the second pipeline 322 from bursting due to excessive pressure inside the box 311 when the air pump 39 is working, thereby improving the reliability of the thermal management device 300.

[0093] like Fig. 9 As shown, the present application also provides a thermal management system 400, which includes the electric motorcycle 100 provided in the embodiment of the present application, and uses the thermal management device 300 provided in the embodiment of the present application to perform thermal management on the battery pack of the electric motorcycle 100 when charging.

[0094] In order to further illustrate the thermal management system 400 provided in the embodiment of the present application, the following is described in conjunction with a specific method of use, as follows:

[0095] First, when the electric motorcycle 100 needs to be charged, the user connects the charging connector 22 of the charging device 200 to the charging interface 16 of the electric motorcycle 100, and connects the pipe connector 323 of the thermal management device 300 to the pipe interface 172 of the electric motorcycle 100 to complete the preparation for charging the electric motorcycle 100.

[0096] The battery management unit 151 of the electric motorcycle 100 monitors the temperature of the battery pack. When the temperature of the battery pack is greater than a first preset threshold, the thermal management device 300 cools the battery pack to reduce the temperature of the temperature regulating liquid and delivers the reduced temperature temperature regulating liquid to the electric motorcycle 100. The temperature regulating liquid performs heat exchange in the circulation pipeline 171 of the electric motorcycle 100, absorbs the heat generated by the battery pack, and thus reduces the temperature of the battery pack.

[0097] When the temperature of the battery pack drops to a temperature range suitable for charging, the thermal management device 300 can enter the constant temperature mode. In the constant temperature mode, the thermal management device 300 controls the temperature of the temperature regulating liquid to be within a preset temperature range, for example, 15°C to 25°C, so that the battery pack can be kept at a suitable charging temperature, so that the battery pack has a better charging efficiency and ensures the safety of the battery pack.

[0098] If the temperature of the battery pack is lower than the second preset threshold, the thermal management device 300 generates heat to raise the temperature of the temperature regulating liquid, and delivers the heated temperature regulating liquid to the electric motorcycle 100. The temperature regulating liquid undergoes heat exchange in the circulation pipeline 171 of the electric motorcycle 100, releasing heat to raise the temperature of the battery pack to a temperature range suitable for charging. Only when the battery pack is heated to a suitable temperature range is charging of the battery pack allowed to ensure the safety of the battery pack. Similarly, when the temperature of the battery pack rises to a temperature range suitable for charging, the thermal management device 300 can enter a constant temperature mode, so that the battery pack can be kept at a suitable charging temperature, so that the battery pack has a better charging efficiency and ensures the safety of the battery pack.

[0099] When the battery pack is fully charged or the user actively terminates charging, the output of the charging device 200 is first turned off, and then the thermal management device 300 is turned off. The shutdown process of the thermal management device 300 is as follows:

[0100] The heat pump assembly 35 and the liquid pump 33 are turned off, and the valve body at the first inlet 381 of the three-way valve 38 is closed.

[0101] The valve body at the second inlet 382 of the three-way valve 38 is opened, and the air pump 39 is started. After the air pump 39 works to discharge the residual temperature regulating liquid in the circulation pipeline 171 of the electric motorcycle 100 back to the liquid storage component 31, the air pump 39 stops working. Only then is the user allowed to disconnect the pipeline connector 323 of the thermal management device 300 from the pipeline interface 172 of the electric motorcycle 100. In this way, leakage of the temperature regulating liquid can be prevented, the electric motorcycle 100 can be prevented from being contaminated by the temperature regulating liquid, and the user experience can be improved.

[0102] The above disclosure is only the preferred embodiment of the present application, but it is not intended to limit the scope of rights of the present application. A person of ordinary skill in the art can understand that without departing from the spirit and scope of the present application and the appended claims, changes, modifications, substitutions, combinations, and simplifications should all be equivalent replacement methods and still fall within the scope of the invention.

Claims

1. An electric motorcycle, comprising: Vehicle body; a suspension assembly at least partially connected to the vehicle body; a drive assembly at least partially connected to the vehicle body; a travel assembly, the travel assembly being at least partially connected to the drive assembly; A power supply assembly, the power supply assembly is at least partially connected to the vehicle body, the power supply assembly includes a battery pack, and the battery pack supplies power to the drive assembly; A charging interface, the charging interface is at least partially connected to the power supply assembly, and when the electric motorcycle is charged, the charging interface is connected to a power supply device outside the electric motorcycle; Characterized in that the electric motorcycle also includes: A thermal management component, wherein the thermal management component includes a circulation pipeline, the circulation pipeline is used to circulate a temperature regulating liquid, and the temperature regulating liquid is used to regulate the temperature of the battery pack; the circulation pipeline includes a first port and a second port, and the first port and the second port are provided with pipeline interfaces, and the pipeline interfaces are used to connect the circulation pipeline with a thermal management device, and the thermal management device is located outside the electric motorcycle. The thermal management device is used to provide the temperature regulating liquid, and the temperature regulating liquid enters the circulation pipeline through the first port and flows back to the thermal management device through the second port.

2. The electric motorcycle according to claim 1, characterized in that: The power supply assembly also includes a battery management unit, which is used to monitor the temperature and charging and discharging status of the battery pack; The electric motorcycle further comprises: a control unit, communicatively connected to the battery management unit, the control unit being used to generate a temperature reduction request, the temperature reduction request being generated when the battery management unit detects that the temperature of the battery pack is greater than or equal to a first preset threshold value, and the electric motorcycle is in a connected state with a power supply device external to the electric motorcycle; a communication unit, the communication unit being communicatively connected to the control unit and the thermal management device respectively, the communication unit being used to send the temperature reduction request to the thermal management device, so that the thermal management device delivers the temperature regulating liquid to the first port in response to the temperature reduction request; After the temperature regulating liquid absorbs the heat of the battery pack in the circulation pipeline, the temperature regulating liquid flows back to the thermal management device through the second port, and the temperature regulating liquid releases heat in the thermal management device.

3. The electric motorcycle according to claim 2, characterized in that: The control unit is used to generate a heating request, wherein the heating request is generated when the battery management unit detects that the temperature of the battery pack is less than or equal to a second preset threshold, and the electric motorcycle is connected to a power supply device outside the electric motorcycle, and the second preset threshold is less than the first preset threshold; The communication unit is used to send the heating request to the thermal management device, so that the thermal management device heats the temperature regulating liquid in response to the heating request and transports the heated temperature regulating liquid to the first port. The temperature regulating liquid releases heat in the circulation pipeline to increase the temperature of the battery pack.

4. The electric motorcycle according to claim 3, characterized in that: The control unit is also used to set the temperature range. When the control unit generates the heating request, the control unit monitors the temperature of the battery pack through the battery management unit. When the battery pack is heated to within the temperature range, the control unit sends an instruction to the battery management unit to allow the battery pack to start charging.

5. A thermal management device, characterized in that: The thermal management device is used for thermal management of the battery pack when the electric motorcycle is charged, and the thermal management device comprises: A liquid storage component, used for storing a temperature regulating liquid; A pipeline assembly, comprising a first pipeline, a second pipeline and a pipeline joint, wherein one end of the first pipeline and the second pipeline are both connected to the liquid storage assembly, and the other ends of the first pipeline and the second pipeline are both connected to the pipeline joint, and the pipeline joint is used to be connected to the pipeline interface of the electric motorcycle; A liquid pump is connected to the first pipeline and is used to pump the temperature regulating liquid to the electric motorcycle. The temperature regulating liquid enters the electric motorcycle through the first pipeline, exchanges heat with the battery pack of the electric motorcycle, and then flows back to the liquid storage assembly through the second pipeline.

6. The thermal management device according to claim 5, characterized in that: The thermal management device further comprises: a heat exchange component, the heat exchange component being connected to the first pipeline, and the temperature regulating liquid performing heat exchange at the heat exchange component; A heat pump assembly, wherein the heat pump assembly is connected to the heat exchange assembly, The heat pump assembly includes a first mode and a second mode. When the heat pump assembly is in the first mode, the heat pump assembly performs cooling, so that the temperature of the temperature regulating liquid decreases after passing through the heat exchange assembly. When the heat pump assembly is in the second mode, the heat pump assembly performs heating, so that the temperature of the temperature regulating liquid increases after passing through the heat exchange assembly.

7. The thermal management device according to claim 6, characterized in that: The thermal management device further comprises: Air pump; A three-way valve, the three-way valve comprising a first inlet, a second inlet and an outlet, the first inlet is connected to the first pipeline, the second inlet is connected to the air pump, and the outlet is connected to the pipeline connector; The liquid storage assembly comprises a box body, the box body is used to store the temperature regulating liquid, the box body is provided with a pressure relief valve, and the pressure relief valve is used to balance the air pressure inside and outside the box body.

8. The thermal management device according to claim 7, characterized in that: The thermal management device also includes a control component, The control component is in communication connection with the electric motorcycle, and in response to a request sent by the electric motorcycle, the control component controls the valve body at the first inlet of the three-way valve to open, and controls the liquid pump to open; The control component is also used to control the liquid pump to be turned off. When the liquid pump is turned off, the control component controls the valve body at the first inlet to be closed, opens the valve body at the second inlet, and controls the air pump to start, so that the temperature regulating liquid in the circulation pipeline of the electric motorcycle is discharged back to the liquid storage component; The request sent by the electric motorcycle includes a cooling request and a heating request; When the control component receives a cooling request sent by the electric motorcycle, the control component controls the heat pump component to enter the first mode. When the control component receives a heating request sent by the electric motorcycle, the control component controls the heat pump component to enter the second mode.

9. The thermal management device according to claim 6, characterized in that: The thermal management device further comprises a temperature detection component, wherein the temperature detection component is used to detect the temperature of the temperature regulating liquid in the liquid storage component and the temperature of the temperature regulating liquid after heat exchange by the heat exchange component; The thermal management device also includes a control component, which is used to set a temperature range. The control component is also used to control the heat pump component so that the temperature of the temperature regulating liquid after heat exchange by the heat exchange component is within the temperature range.

10. A thermal management system, characterized in that: The thermal management system comprises the electric motorcycle as claimed in any one of claims 1 to 4, and uses the thermal management device as claimed in any one of claims 5 to 9 to perform thermal management on the battery pack of the electric motorcycle when charging.

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