Thermal management system for electric motorcycle

Abstract

To provide a new heat management system for an electric motorcycle capable of adjusting the temperature of at least both a battery and a saddle.SOLUTION: This heat management system 10 for the electric motorcycle is provided in the electric motorcycle traveling by driving a motor by using electricity charged in a battery 11. The electric motorcycle includes a saddle 5 on which a rider is seated. The heat management system 10 includes a circulation passage 21 for circulating a liquid medium, an electric pump 13 for pumping the liquid medium in the circulation passage 21, and an electric heater 15 for heating the liquid medium in the circulation passage 21. A circulation passage 21 is provided so as to transfer heat to the battery 11. A saddle passage 22 through which the liquid medium of the circulation passage 21 circulates is disposed in the saddle 5. The saddle 5 is disposed directly above the electric heater 15. The saddle passage 22 is disposed directly below the electric heater 15.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The technology disclosed in this specification relates to a thermal management system for an electric motorcycle that adjusts the temperature of a battery mounted on the electric motorcycle to an appropriate temperature. [Background technology]

[0002] Conventionally, heating technology for engine-driven motorcycles has been known, for example, as disclosed in Patent Document 1 below. This device is for a motorcycle with a water-cooled engine, and provides a second circulation path by connecting a bypass pipe branching off from the circulation path of the coolant (liquid medium) to a heater pipe built into the saddle, and also provides a cock on part of the heater pipe. The cock adjusts the amount of circulation of the liquid medium, allowing the liquid medium heated by the engine to flow through the heater pipe, thereby warming the saddle appropriately. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 8-244663 Summary of the Invention [Problem to be solved by the invention]

[0004] Recently, there has been a trend toward electrification of motorcycles, similar to the trend toward electrification of automobiles. With the electrification of motorcycles, it is necessary to maintain the appropriate temperature of the batteries installed in motorcycles in order to ensure their longevity. Here, there is a trend to shift from air-cooling to water-cooling (liquid medium) for battery cooling. In addition, in cold weather, it is necessary to warm the battery to the appropriate temperature.

[0005] In the device described in Patent Document 1, a heater pipe is provided in the saddle and a heated liquid medium is circulated through the saddle to warm the saddle appropriately. Therefore, there is a need for a device that can regulate the temperatures of at least both the battery and the saddle, even in electric motorcycles.

[0006] This disclosed technology has been made in consideration of the above circumstances, and its purpose is to provide a new thermal management system for an electric motorcycle that is capable of regulating the temperature of at least both the battery and the saddle. [Means for solving the problem]

[0007] In order to achieve the above object, the technology described in claim 1 is a thermal management system for an electric motorcycle that is provided on an electric motorcycle that runs by driving a motor using electricity charged in a battery, wherein the electric motorcycle has a saddle on which a rider sits, and the management system has a circulation passage that circulates a liquid medium, an electric pump that pressurizes the liquid medium in the circulation passage, and an electric heater that heats the liquid medium in the circulation passage, the circulation passage is provided so as to be able to transfer heat to the battery, and a saddle passage is provided in the saddle through which the liquid medium in the circulation passage circulates.

[0008] According to the configuration of the above technology, by operating the electric pump and the electric heater, the liquid medium circulates through the circulation passage and is heated by the electric heater. The liquid medium circulating through the circulation passage exchanges heat with the battery. Furthermore, the liquid medium circulating through the circulation passage circulates through the saddle passage, thereby exchanging heat with the saddle.

[0009] In order to achieve the above object, the technology described in claim 2 is the technology described in claim 1, in which the saddle is arranged directly above the electric heater and the saddle passage is arranged directly below the electric heater.

[0010] According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, the saddle and the saddle passage are arranged on either side of the electric heater, so the saddle can be heated by both the electric heater and the liquid medium in the saddle passage. Also, because the saddle passage is arranged directly below the electric heater, the liquid medium heated by the electric heater in the saddle passage circulates through the circulation passage.

[0011] In order to achieve the above object, the technology described in claim 3 is the technology described in claim 1 or 2, wherein the circulation passage is provided with a radiator and a bypass passage that bypasses the radiator, and a first electric switching valve is provided at the branch point between the circulation passage and the bypass passage for switching the flow path of the liquid medium flowing through the circulation passage to the bypass passage.

[0012] According to the configuration of the above technology, in addition to the effect of the technology described in claim 1 or 2, by switching the first electric switching valve, it becomes possible to selectively exchange heat with the liquid medium circulating through the circulation passage in the radiator.

[0013] In order to achieve the above object, the technology described in claim 4 is the technology described in claim 3, further comprising a control means for controlling the battery, the motor, the electric pump, the electric heater, and the first electric switching valve, and the control means controls the electric pump, the electric heater, and the first electric switching valve according to the outside air temperature and the operating state of the motor.

[0014] According to the configuration of the above technology, in addition to the effect of the technology described in claim 3, the control means controls the electric pump, the electric heater, and the first electric switching valve according to the outside air temperature and the operating state of the motor, thereby circulating the heated liquid medium or the cooled liquid medium to the battery and the saddle.

[0015] In order to achieve the above object, the technology described in claim 5 is the technology described in claim 1, in which a mobile base for placing a mobile device having a rechargeable built-in battery is provided at a position where the saddle passage can transfer heat, and a mobile charger that can be electrically connected to the built-in battery of the mobile device is provided near the mobile base, and the mobile charger is configured to be able to receive power from the battery.

[0016] According to the configuration of the above technology, in addition to the effect of the technology described in claim 1, a mobile base for placing a mobile device is provided at a position where the saddle passage allows heat transfer. Therefore, by placing the mobile device on the mobile base, heat is transferred to the mobile device from the liquid medium flowing through the saddle passage. Furthermore, since a mobile charger is provided near the mobile base, it is possible to electrically connect the built-in battery of the mobile device placed on the mobile base to the mobile charger.

[0017] In order to achieve the above object, the technology described in claim 6 is the technology described in claim 5, in which a base passage through which the liquid medium flows to the mobile base and a battery passage through which the liquid medium flows to the battery are branched downstream of the saddle passage, and a second electric switching valve is provided at the branch point between the base passage and the battery passage to switch the flow path of the liquid medium flowing through the saddle passage to either the base passage or the battery passage.

[0018] According to the configuration of the above technology, in addition to the effect of the technology described in claim 5, the downstream of the saddle passage branches into the base passage and the battery passage, and the flow path of the liquid medium flowing through the saddle passage is switched to either the base passage or the battery passage by the second electric selector valve. Therefore, by switching the second electric selector valve in accordance with the charging status of the mobile device and the outside air temperature, it is possible to change the flow rate ratio of the liquid medium flowing through the base passage and the battery passage. [Effects of the Invention]

[0019] According to the technology recited in claim 1, it is possible to provide a novel thermal management system for an electric motorcycle that can regulate the temperatures of at least both the battery and the saddle.

[0020] According to the technology described in claim 2, in addition to the effect of the technology described in claim 1, the saddle can be effectively heated and the liquid medium circulating through the circulation passage can be effectively heated by the electric heater.

[0021] According to the technology described in claim 3, in addition to the effect of the technology described in claim 1 or 2, the liquid medium can be cooled by the radiator as needed, and the battery and saddle can be cooled selectively.

[0022] According to the technology described in claim 4, in addition to the effect of the technology described in claim 3, the battery and saddle can be selectively heated or cooled depending on the outside air temperature and the operating state of the motor.

[0023] According to the technology described in claim 5, in addition to the effect of the technology described in claim 1, it is possible to adjust the temperature of the mobile device being charged together with the battery and saddle. Furthermore, when charging the mobile device, it is possible to efficiently heat or cool the mobile device, efficiently charge the built-in battery of the mobile device, and shorten the charging time.

[0024] According to the technology recited in claim 6, in addition to the effect of the technology recited in claim 5, it is possible to appropriately adjust the temperatures of the mobile device and the battery according to the charging status of the mobile device and the outside air temperature. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a schematic view showing an electric motorcycle according to a first embodiment. [Figure 2] FIG. 3 is a block circuit diagram showing the operation of the heat management system in extreme cold in the first embodiment. [Figure 3] FIG. 3 is a block circuit diagram showing the operation of the heat management system in cold weather in the first embodiment. [Figure 4] FIG. 3 is a block circuit diagram showing the operation of the heat management system at room temperature in the first embodiment. [Figure 5] 3 is a block circuit diagram showing the operation of the heat management system in the first embodiment when it is extremely hot or when normal temperature cooling is required. FIG. [Figure 6] FIG. 3 is a schematic view showing the arrangement of a saddle, a saddle passage, and an electric heater in the first embodiment. [Figure 7]FIG. 10 is a block circuit diagram showing a heat management system according to a second embodiment. [Figure 8] FIG. 10 is a schematic view showing the arrangement of saddle passages in the saddle according to the second embodiment. [Figure 9] FIG. 7 is a schematic diagram according to a third embodiment, showing the configuration of a saddle, a saddle passage, an electric heater, and the like, which corresponds to FIG. 6. [Figure 10] FIG. 11 is a block circuit diagram showing the operation of the heat management system at room temperature according to the third embodiment. [Figure 11] FIG. 11 is a block circuit diagram showing the operation of the heat management system in extremely cold or cold weather according to the third embodiment. [Figure 12] FIG. 11 is a block circuit diagram showing the operation of the heat management system in a case where cooling at room temperature or during extreme heat is required according to the third embodiment. [Figure 13] FIG. 10 is a block circuit diagram showing the operation of the heat management system in extremely cold or cold weather according to the fourth embodiment. [Figure 14] FIG. 11 is a block circuit diagram showing the operation of the heat management system in a heat wave or when normal temperature cooling is required according to the fourth embodiment. [Figure 15] 11 is a graph showing an example of the relationship between the flow rate ratio of the liquid medium flowing to the mobile base and the liquid medium flowing to the battery in the charging mode according to the third embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, a specific embodiment of a thermal management system for an electric motorcycle will be described.

[0027] First Embodiment First, the first embodiment will be described in detail with reference to the drawings.

[0028] [About electric motorcycles] FIG. 1 is a schematic diagram of an electric motorcycle 1 according to this embodiment. As shown in FIG. 1, the electric motorcycle 1 is equipped with a battery 11 and a motor 12. The electric motorcycle 1 travels by using electricity stored in the battery 11 to drive the motor 12, which in turn drives the drive wheels 3. The electric motorcycle 1 is equipped with a saddle 5 on which a rider sits. The electric motorcycle 1 is equipped with a thermal management system (hereinafter simply referred to as the "thermal management system") 10 for regulating the temperature of the battery 11 and the saddle 5.

[0029] [About the heat management system] 2 to 5 are block circuit diagrams showing the operation of the heat management system 10 in this embodiment. The heat management system 10 includes a circulation passage 21 that circulates a liquid medium. An electric pump 13, a power control unit (PCU) 14, an electric heater 15, a battery 11, and a radiator 16 are arranged in series on the circulation passage 21.

[0030] The electric pump 13 operates to pump the liquid medium through the circulation passage 21. The PCU 14 is a unit that integrates a power drive unit (PDU) that converts current from DC to AC and controls the motor 12, a voltage control unit (VCU) that increases the drive voltage of the motor 12 to a predetermined value as needed, and a motor electronic control unit (motor ECU) that freely controls these. The electric heater 15 operates to heat the liquid medium flowing through the circulation passage 21. The battery 11 is configured to be capable of charging and discharging. The radiator 16 is configured to be able to exchange heat between the liquid medium flowing through the circulation passage 21 and the outside.

[0031] The circulation passage 21 is provided to be able to transfer heat to the battery 11. That is, the circulation passage 21 is configured to be able to transfer heat between the liquid medium flowing inside the circulation passage 21 and the cells that make up the battery 11.

[0032] 2 to 5, the circulation passage 21 is provided with a bypass passage 23 that bypasses the radiator 16. In addition, a first electric switching valve 17 is provided at one of the branch points between the circulation passage 21 and the bypass passage 23 to switch the flow path of the liquid medium flowing through the circulation passage 21 to the bypass passage 23.

[0033] In this embodiment, the PCU 14 controls the battery 11, the motor 12, the electric pump 13, the electric heater 15, and the first electric switching valve 17. The PCU 14 corresponds to an example of the "control means" of the disclosed technology. The PCU 14 controls the electric pump 13, the electric heater 15, and the first electric switching valve 17 in accordance with the outside air temperature and the operating state of the motor 12.

[0034] [About saddles and saddle passages] FIG. 6 is a schematic diagram showing the arrangement of the saddle 5, saddle passage 22, and electric heater 15. The saddle 5 includes a saddle passage 22 through which the liquid medium circulates in the circulation passage 21. The saddle 5 is made of a heat-conductive cushioning material. The saddle passage 22, connected in series and parallel to the circulation passage 21, branches into multiple branch passage sections 22a upstream. Each branch passage section 22a is formed in a coil spring shape and arranged side by side. The branch passage sections 22a merge into one downstream of the saddle passage 22 and are connected in series and parallel to the circulation passage 21. A plate-shaped heat transfer material 7 and a plate-shaped electric heater 15 are arranged directly above each branch passage section 22a. Heat from the liquid medium flowing through the saddle passage 22 is transferred to the saddle 5 via the heat transfer material 7 and the electric heater 15. The saddle passage 22 (branch passage section 22a) is arranged directly below the electric heater 15. The heat of the electric heater 15 is transferred to the liquid medium flowing through the saddle passage 22 via the heat transfer material 7 and also directly to the saddle 5.

[0035] [About the operation of the heat management system] 2 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17 in "extremely cold" conditions when the outside air temperature is extremely low (for example, below 0°C), and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows). In extreme cold conditions, the PCU 14 turns on the electric pump 13 and the electric heater 15, and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 bypasses the radiator 16 and flows into the bypass passage 23. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. In addition, the saddle 5 is warmed by the liquid medium via the saddle passage 22 (see FIG. 6).

[0036] 3 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17 in "cold weather" when the outside air temperature is slightly low (e.g., 0 to 20°C), and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows). In cold weather, the PCU 14 turns the electric pump 13 "ON," turns the electric heater 15 "OFF," and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 bypasses the radiator 16 and flows into the bypass passage 23. In this case, the PCU 14 also generates heat, and the heat is transferred to the liquid medium. In addition, the saddle 5 is warmed by the liquid medium via the saddle passage 22 (see FIG. 6).

[0037] 4 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17 at "normal temperature" when the outside air is at normal temperature (for example, 20 to 35°C), and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows). At normal temperature, the PCU 14 turns the electric pump 13 "OFF," turns the electric heater 15 "OFF," and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 flows into the bypass passage 23, bypassing the radiator 16. In this case, the PCU 14 and the battery 11 generate heat, and the heat is transferred to the liquid medium.

[0038] FIG. 5 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17, and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows) during "extremely hot weather" when the outside air temperature is high (e.g., 35°C or higher) or during "normal-temperature cooling demand" when the PCU 14 and the battery 11 need to be cooled at normal temperature. In this case, the PCU 14 turns the electric pump 13 "ON" and the electric heater 15 "OFF," and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 flows to the radiator 16 without flowing to the bypass passage 23. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. The saddle 5 is also cooled by the liquid medium via the saddle passage 22 (see FIG. 6).

[0039] [About the action and effects of the heat management system] According to the configuration of the thermal management system 10 of this embodiment described above, by operating the electric pump 13 and the electric heater 15, the liquid medium circulates through the circulation passage 21, and the liquid medium is heated by the electric heater 15. The liquid medium circulating through the circulation passage 21 exchanges heat with the battery 11. Furthermore, the liquid medium circulating through the circulation passage 21 circulates through the saddle passage 22, thereby exchanging heat between the liquid medium and the saddle 5. Therefore, it is possible to provide a novel thermal management system for an electric motorcycle that can regulate the temperatures of at least both the battery 11 and the saddle 5.

[0040] According to the configuration of this embodiment, the saddle 5 and the saddle passage 22 are arranged with the electric heater 15 sandwiched between them, so the saddle 5 can be heated by both the electric heater 15 and the liquid medium in the saddle passage 22. In addition, because the saddle passage 22 is arranged directly below the electric heater 15, the liquid medium heated by the electric heater 15 in the saddle passage 22 circulates through the circulation passage 21. Therefore, the saddle 5 can be effectively heated, and the liquid medium circulating through the circulation passage 21 can be effectively heated by the electric heater 15.

[0041] According to the configuration of this embodiment, by switching the first electric switching valve 17, it is possible to selectively perform heat exchange with the liquid medium circulating through the circulation passage 21 in the radiator 16. Therefore, the liquid medium can be cooled by the radiator 16 as needed, and the battery 11 and the saddle 5 can be selectively cooled.

[0042] According to the configuration of this embodiment, the PCU 14 controls the electric pump 13, the electric heater 15, and the first electric switching valve 17 in accordance with the outside air temperature and the operating state of the motor 12, thereby circulating a heated or cooled liquid medium to the battery 11 and the saddle 5. Therefore, the battery 11 and the saddle 5 can be selectively heated or cooled in accordance with the outside air temperature and the operating state of the motor 12.

[0043] Second Embodiment Next, the second embodiment will be described in detail with reference to the drawings. In the following description, explanations of the same components as those in the first embodiment will be omitted, and differences will be mainly described.

[0044] [About the heat management system] This embodiment differs from the first embodiment in the arrangement of the saddle 5 in the heat management system 10. FIG. 7 shows a block circuit diagram of the heat management system 10 of this embodiment. As shown in FIG. 7, in this embodiment, the saddle 5 is not arranged directly above the electric heater 15. In addition, a saddle passage 22 (see FIG. 8) provided in the saddle 5 is connected in series with the circulation passage 21.

[0045] [About the saddle passage] FIG. 8 is a schematic diagram showing the arrangement of the saddle passages 22 in the saddle 5. The saddle 5 is made of a heat-conductive cushioning material. The saddle passage 22, which is connected in series to the circulation passage 21, branches into three branch passage sections 22b on the upstream side. The three branch passage sections 22b are each bent in a zigzag pattern inside the saddle 5 and arranged parallel to one another. The three branch passage sections 22b merge into one on the downstream side of the saddle passage 22 and are connected in series to the circulation passage 21.

[0046] [About the action and effects of the heat management system] According to the configuration of the heat management system 10 of this embodiment described above, the saddle 5 is not located directly above the electric heater 15, so the amount of heat transferred to the saddle 5 is less than in the first embodiment. In other respects, the heat management system 10 of this embodiment has the same functions and effects as the first embodiment.

[0047] <Third embodiment> Next, a third embodiment will be described in detail with reference to the drawings.

[0048] [About charging mobile phones] As with automobiles, even on motorcycles, mobile phones and other devices are sometimes attached to the handlebars via holders. Furthermore, mobile phones are sometimes connected to a charger located near the handlebars via a charging cord to charge the built-in battery. On motorcycles, mobile phones attached to the handlebars are exposed to harsh outdoor conditions. Furthermore, during charging, the mobile phone may be exposed to extreme heat or cold, which can hinder efficient charging and tend to prolong charging times.

[0049] Therefore, in this embodiment, when charging a mobile phone or the like on a motorcycle, the temperature of the mobile phone or the like is adjusted using a heat source provided in the saddle 5, thereby enabling the mobile phone to be charged efficiently.

[0050] [About the saddle configuration] This embodiment differs from the first embodiment in the configuration of the saddle 5. Fig. 9 is a schematic diagram similar to Fig. 6 showing the configuration of the saddle 5, saddle passage 22, electric heater 15, etc. of this embodiment. In this embodiment, as shown in Fig. 9, a mobile base 31 is provided in a position where the saddle passage 22 can transfer heat. The mobile base 31 is used to place a mobile device 40 having a rechargeable built-in battery 41. In this embodiment, the mobile device 40 can be a portable communication terminal such as a mobile phone, a mobile battery, or the like.

[0051] In this embodiment, the saddle 5 is mainly made of a heat-conductive cushioning material 32. A box 33 is built into the rear of the saddle 5. This box 33 has a chamber 34 inside. The mobile base 31 is placed in this chamber 34. The bottom surface of the mobile base 31 is fixed in surface contact with the electric heater 15. The mobile base 31 is made of a heat-conductive material. The mobile device 40 placed on the mobile base 31 can be held by the mobile base 31 via a holder (not shown). The box 33 has an openable and closable door 35 at the opening of the chamber 34.

[0052] The box 33 is provided with a mobile charger 36 that can be electrically connected to the mobile device 40. The mobile charger 36 includes a USB port 37. The USB port 37 is arranged on an inner wall of the room 34 and can be connected to the mobile device 40 via a charging cord (not shown). The mobile charger 36 is configured to be able to receive power from the battery 11 of the thermal management system 10 via a power cord (not shown).

[0053] [About the heat management system] 10 to 12 are block circuit diagrams showing the operation of the heat management system 10 in this embodiment. The configuration of this heat management system 10 is basically the same as that of the first embodiment. As shown in Figs. 10 to 12, in this embodiment, a saddle 5 and a mobile base 31 are provided on an electric heater 15 in a manner that allows heat transfer.

[0054] [About the operation of the heat management system] 10 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17 at "normal temperature" when the outside air is at normal temperature (for example, 20 to 35°C), and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows). At normal temperature, the PCU 14 turns the electric pump 13 "ON," turns the electric heater 15 "OFF," and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 flows into the bypass passage 23, bypassing the radiator 16. In this case, the PCU 14 and the battery 11 generate heat, and the heat is transferred to the liquid medium.

[0055] FIG. 11 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17 in "extremely cold or cold weather" when the outside air temperature is extremely low (for example, below 0°C), and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows). In extremely cold or cold weather, the PCU 14 turns on the electric pump 13 and the electric heater 15, and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 bypasses the radiator 16 and flows into the bypass passage 23. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. Furthermore, the saddle 5 and the mobile base 31 are heated by the liquid medium and the electric heater 15 via the saddle passage 22 (see FIG. 9).

[0056] FIG. 12 shows the control states of the electric pump 13, the electric heater 15, and the first electric switching valve 17, and the flow of the liquid medium in the circulation passage 21 and the bypass passage 23 (see arrows) during "extremely hot weather" when the outside air temperature is high (e.g., 35°C or higher) or during "normal-temperature cooling demand" when the PCU 14 and the battery 11 need to be cooled at normal temperature. In this case, the PCU 14 turns the electric pump 13 "ON," turns the electric heater 15 "OFF," and switches the first electric switching valve 17 so that the liquid medium in the circulation passage 21 flows to the radiator 16 without flowing to the bypass passage 23. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. In addition, the saddle 5 and the mobile base 31 are cooled by the liquid medium via the saddle passage 22 (see FIG. 9).

[0057] [About the action and effects of the heat management system] According to the configuration of the heat management system 10 of this embodiment described above, it is possible to obtain basically the same actions and effects as the heat management system 10 of the first embodiment.

[0058] Additionally, in this embodiment, a mobile base 31 for placing the mobile device 40 is provided at a position where the saddle passage 22 allows heat transfer. Therefore, when the mobile device 40 is placed on the mobile base 31, heat is transferred to the mobile device 40 from the liquid medium flowing through the saddle passage 22. Furthermore, a mobile charger 36 is provided near the mobile base 31, allowing the internal battery 41 of the mobile device 40 placed on the mobile base 31 to be electrically connected to the USB port 37 of the mobile charger 36. This allows the temperature of the mobile device 40, together with the battery 11 and the saddle 5, to be regulated during charging. Furthermore, when charging the mobile device 40, the mobile device 40 can be efficiently heated or cooled, allowing the internal battery 41 of the mobile device 40 to be efficiently charged and the charging time to be shortened. Particularly in this embodiment, the mobile device 40 is housed in the chamber 34 inside the saddle 5, preventing the mobile device 40 from contacting the outside air. In this sense, the influence of the outside air on the mobile device 40 during charging can be suppressed, and the charging time of the built-in battery 41 of the mobile device 40 can be further shortened.

[0059] <Fourth embodiment> Next, a fourth embodiment will be described in detail with reference to the drawings.

[0060] [About the heat management system] The configuration of the heat management system 10 of this embodiment is basically the same as that of the second embodiment. Figures 13 and 14 are block circuit diagrams showing the operation of the heat management system 10 of this embodiment. As shown in Figures 13 and 14, in this embodiment, a base passage 26, through which the liquid medium flows to the mobile base 31, and a battery passage 27, through which the liquid medium flows to the battery 11, are branched off downstream of the saddle 5 (saddle passage 22). A second electric switching valve 28 is provided at the branch point between the base passage 26 and the battery passage 27 to switch the circulation passage 21 of the liquid medium flowing through the saddle passage 22 to either the base passage 26 or the battery passage 27.

[0061] [About the operation of the heat management system] FIG. 13 shows the control states of the electric pump 13, electric heater 15, first electric selector valve 17, and second electric selector valve 28 in "extremely cold or cold weather" when the outside air temperature is extremely low (e.g., below 0°C), and the flow of the liquid medium (see arrows) in the circulation passage 21, bypass passage 23, base passage 26, and battery passage 27. In extremely cold or cold weather, the PCU 14 turns on the electric pump 13 and the electric heater 15 and switches the first electric selector valve 17 so that the liquid medium in the circulation passage 21 bypasses the radiator 16 and flows into the bypass passage 23. The PCU 14 also switches the second electric selector valve 28 so that the liquid medium flows into both the base passage 26 and the battery passage 27. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. The liquid medium flowing through the saddle 5 via the electric heater 15 and the saddle passage 22 warms the saddle 5, the battery 11, and the mobile base 31.

[0062] 14 shows the control states of the electric pump 13, the electric heater 15, the first electric selector valve 17, and the second electric selector valve 28, and the flow of the liquid medium (see arrows) in the circulation passage 21, the bypass passage 23, the base passage 26, and the battery passage 27 during a "very hot" time when the outside air temperature is high (e.g., 35°C or higher) or during a "normal temperature cooling request" time when the PCU 14 and the battery 11 need to be cooled. In this case, the PCU 14 turns the electric pump 13 "ON" and the electric heater 15 "OFF," and switches the first electric selector valve 17 so that the liquid medium in the circulation passage 21 flows to the radiator 16 without flowing to the bypass passage 23. The PCU 14 also switches the second electric selector valve 28 so that the liquid medium flows to both the base passage 26 and the battery passage 27. In this case, the PCU 14 generates heat, and the heat is transferred to the liquid medium. In addition, the liquid medium flowing into the saddle 5 through the saddle passage 22 cools the saddle 5, the battery 11, and the mobile base 31.

[0063] Here, by adjusting the switching aperture of the second electric switching valve 28, it is possible to set an appropriate flow rate ratio between the liquid medium flowing to the mobile pedestal 31 and the liquid medium flowing to the battery 11. FIG. 15 is a graph showing an example of the relationship between the "flow rate ratio" of the liquid medium flowing to the mobile pedestal 31 and the battery 11 for the "charging mode." The flow rate ratio corresponds to the switching aperture of the second electric switching valve 28. In FIG. 15, in the charging mode "1," the flow rate ratio to the mobile pedestal 31 is "100%." ​​In the charging mode "2," the flow rate ratio to the mobile pedestal 31 is "approximately 20%," and the flow rate ratio to the battery 11 is "approximately 80%." In the charging mode "3," the flow rate ratio to the battery 11 is "100%."

[0064] [About the action and effects of the heat management system] According to the configuration of the heat management system 10 of this embodiment described above, it is possible to obtain basically the same actions and effects as the heat management system 10 of the second embodiment.

[0065] Additionally, in this embodiment, the downstream of the saddle 5 (saddle passage 22) branches into a base passage 26 and a battery passage 27, and the flow path of the liquid medium flowing through the saddle passage 22 is switched by a second electric selector valve 28 to either the base passage 26 or the battery passage 27. Therefore, by switching the second electric selector valve 28 in accordance with the charging status of the mobile device 40 and the outside air temperature, it is possible to change the flow rate ratio of the liquid medium flowing through the base passage 26 and the battery passage 27. This makes it possible to appropriately adjust the temperatures of the mobile device 40 and the battery 11 in accordance with the charging status of the mobile device 40 and the outside air temperature.

[0066] <Another embodiment> The disclosed technology is not limited to the above-described embodiments, and can be implemented by appropriately modifying part of the configuration within the scope of the disclosed technology.

[0067] For example, in each of the above embodiments, the radiator 16, the first electric switching valve 17, and the bypass passage 23 are provided in the circulation passage 21, but the radiator 16, the first electric switching valve 17, and the bypass passage 23 may be omitted. [Industrial Applicability]

[0068] The disclosed technology can be applied to electric motorcycles. [Explanation of symbols]

[0069] 1 Electric motorcycle 5. Saddle 10 Heat management system 11 Battery 12 motors 13 Electric pump 14 PCU (control means) 15 Electric heater 16 Radiator 17 First electric switching valve 21 Circulation passage 22 Saddle Passage 23 Bypass Passage 26 Pedestal passage 27 Battery Passage 28 Second electric switching valve 31 Mobile pedestal 36 Mobile Charger 40 Mobile Devices 41 Built-in battery

Claims

1. A thermal management system for an electric motorcycle that is provided on an electric motorcycle that runs by driving a motor using electricity charged in a battery, The electric motorcycle includes a saddle on which a rider sits, The thermal management system includes: a circulation passage for circulating the liquid medium; an electric pump for pressure-feeding the liquid medium through the circulation passage; an electric heater for heating the liquid medium in the circulation passage; Equipped with the circulation passage is provided to the battery so as to be capable of transferring heat thereto; The saddle has a saddle passage through which the liquid medium in the circulation passage circulates. A thermal management system for an electric motorcycle.

2. The thermal management system for an electric motorcycle according to claim 1, the saddle is disposed directly above the electric heater; The saddle passage is disposed directly below the electric heater. A thermal management system for an electric motorcycle.

3. The thermal management system for an electric motorcycle according to claim 1 or 2, The circulation passage is provided with a radiator and a bypass passage that bypasses the radiator, A first electric switching valve is provided at a branch point between the circulation passage and the bypass passage for switching the flow path of the liquid medium flowing through the circulation passage to the bypass passage. A thermal management system for an electric motorcycle.

4. The thermal management system for an electric motorcycle according to claim 3, a control unit for controlling the battery, the motor, the electric pump, the electric heater, and the first electric switching valve; The control means controls the electric pump, the electric heater, and the first electric switching valve in accordance with an outside air temperature and an operating state of the motor. A thermal management system for an electric motorcycle.

5. The thermal management system for an electric motorcycle according to claim 1, a mobile base for placing a mobile device having a rechargeable built-in battery thereon is provided at a position where the saddle passage can transfer heat; a mobile charger electrically connectable to the built-in battery of the mobile device is provided near the mobile base; The mobile charger is configured to receive power from the battery. A thermal management system for an electric motorcycle.

6. The thermal management system for an electric motorcycle according to claim 5, a base passage through which the liquid medium flows to the mobile base and a battery passage through which the liquid medium flows to the battery are branched off downstream of the saddle passage, A second electric switching valve is provided at a branch point between the base passage and the battery passage for switching the flow path of the liquid medium flowing through the saddle passage to either the base passage or the battery passage. A thermal management system for an electric motorcycle.

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