JP2021104722A - Electric vehicle - Google Patents

Abstract

To provide an electric vehicle configured so that heat of an electrical component that is heated to a high temperature can be radiated and the heat can be effectively used.SOLUTION: A vehicle 1, which travels by activating an inverter 4 using electricity of a battery 5 and driving a motor 2, comprises a rear deck 93 that can be mounted with an installation body 94, and a heat transfer part 8 which is provided in the rear deck 93 and is heated by transfer of heat generated from all or some of the battery 5, the inverter 4 and the motor 2 to transfer the heat to the installation body 94. The heat transfer part 8 is configured to have a heat transfer surface 81 formed along a floor surface 93a of the rear deck 93.SELECTED DRAWING: Figure 2

Description

The present invention relates to an electric vehicle.

Conventionally, as an electric vehicle, as described in, for example, Japanese Patent Application Laid-Open No. 2013-243918, an electric vehicle equipped with a cooling system for cooling electrical components such as a motor is known. This electric vehicle attempts to cool electrical components that generate heat due to high temperature during operation by circulating cooling water.

Japanese Unexamined Patent Publication No. 2013-243918

In this type of vehicle, the amount of heat released from electrical components such as motors is large, and its cooling performance becomes even more important, especially in large vehicles such as commercial vehicles. However, securing a mounting space for the cooler becomes a problem. In addition, due to the structure of the vehicle, there are vehicles that are difficult to install, such as a radiator that cools electrical components. Further, it is inefficient to dispose of the heat generated from the electrical components as it is, and it is desirable to effectively use the heat.

Therefore, an object of the present invention is to provide an electric vehicle capable of dissipating heat from electrical components without using a cooler such as a radiator and effectively utilizing the heat.

That is, the electric vehicle according to the present invention is an electric vehicle that operates an inverter by using the electric power of a battery to drive a motor and travels. It is heated by the transfer of heat generated from all or part of the motor, and is provided with a heat transfer part for transferring heat to the frame. The heat transfer part is a heat transfer surface formed along the floor surface of the loading platform. It is configured to have. According to this electric vehicle, the heat generated from all or a part of the battery, the inverter and the motor is transferred to the heat transfer unit, and the heat of the heat transfer unit is transferred to the frame. Therefore, the heat generated from the battery, the inverter, or the motor can be transferred to the frame through the heat transfer unit. As a result, the battery, the inverter, or the motor can be dissipated without providing a cooler, and the heat can be effectively used in the frame. Further, since the heat transfer portion forms the heat transfer surface along the floor surface of the loading platform, the heat generated from the battery, the inverter or the motor can be efficiently transferred to the frame.

Further, in the electric vehicle according to the present invention, a plurality of motors may be installed according to the driving wheels, and a number of heat transfer units may be provided corresponding to the number of motors installed. In this case, since the number of heat transfer units is provided in a number corresponding to the number of installed motors, the heat transfer units can be arranged in the vicinity of the motors. Therefore, the loss due to heat transfer is suppressed, and heat can be efficiently transferred to the frame.

Further, the electric vehicle according to the present invention may be provided with a switching unit for switching the heat transfer unit used for heat transfer of the frame body according to the frame body mounted on the loading platform. In this case, since the heat transfer part used for heat transfer of the frame can be switched according to the frame, the heat generated from the battery, inverter or motor is transferred to the required heat transfer part to transfer the heat energy. It can be used effectively.

Further, in the electric vehicle according to the present invention, the frame may include a heat storage device that stores heat transferred from the heat transfer unit. In this case, since a heat storage device is provided to store the heat transferred from the heat transfer unit, for example, the heat generated during traveling can be stored in the heat storage device, and the heat stored in the frame when the traveling is stopped can be used. can. Further, since the frame is provided with a heat storage device, heat storage can be performed even when there is no space for installing the heat storage device on the vehicle side.

Further, in the electric vehicle according to the present invention, the loading platform extends to the front of the front wheels and the rear of the rear wheels, and the floor surface of the loading platform is flat and is formed at a position lower than the upper ends of the front wheels or the rear wheels. You may be.

According to the present invention, by transferring the heat generated from the electrical component, the electrical component can be dissipated and the heat can be effectively used.

It is a block diagram which shows the structural outline of the electric vehicle which concerns on embodiment of this invention. It is a perspective view of the electric vehicle of FIG. It is a figure which shows an example of the circulation path of the heat medium in the electric vehicle of FIG. It is a figure which shows an example of the circulation path of the heat medium in the electric vehicle of FIG. It is a perspective view at the time of mounting the body in the electric vehicle of FIG. It is a perspective view at the time of mounting the body in the electric vehicle of FIG. It is a perspective view at the time of mounting the body in the electric vehicle of FIG. It is explanatory drawing of the heat storage device in the electric vehicle of FIG. It is a flowchart which shows the operation of the electric vehicle of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same or equivalent elements will be designated by the same reference numerals, and duplicate description will be omitted.

FIG. 1 is a schematic configuration diagram of a vehicle 1 according to an embodiment of the present invention. FIG. 2 is a perspective view of the vehicle 1. As shown in FIG. 1, the vehicle 1 is an electric vehicle, and uses the electric power of the battery 5 to operate the inverter 4 to drive the motor 2 to travel. The vehicle 1 is provided with, for example, six wheels, and includes left and right front wheels 91 and two left and right rear wheels 92. The front wheels 91 and the rear wheels 92 are all drive wheels. A plurality of motors 2 are installed according to the drive wheels. For example, motors 2 are installed on the left and right front wheels 91 and two left and right rear wheels 92, which are driving wheels. Details of the motor 2 will be described later.

As shown in FIG. 2, the vehicle 1 has a loading platform 93 on which the mounting body 94 can be mounted. The loading platform 93 has a flat plate shape and extends to the front of the front wheel 91 and the rear of the rear wheel 92. For example, the loading platform 93 is installed on the chassis of the vehicle 1, and can be formed by extending to the front of the front wheels 91 and the rear of the rear wheels 92, so that a larger mounting body 94 can be loaded. The frame 94 is equipment or equipment according to a specific purpose or use, and corresponds to, for example, a container, a tank, a home delivery equipment, a greenhouse equipment, a living equipment, or the like. The floor surface 93a of the loading platform 93 has a flat shape and is formed at a position lower than the upper ends of the front wheels 91 or the rear wheels 92. The floor surface 93a is a flat surface, and there are no large irregularities or steps other than the protruding portion of the wheel. That is, on the floor surface 93a, the front wheel 91 portion protrudes upward, and the other portions are flat surfaces. The flat shape referred to here means that the floor surface 93a is substantially flat, and may have holes or protrusions necessary for functioning on the floor surface 93a.

The front wheel 91 of the vehicle 1 has a diameter larger than that of the rear wheel 92. The upper end of the front wheel 91 is located higher than the floor surface 93a of the loading platform 93, and the rear wheel 92 is installed below the floor surface 93a of the loading platform 93. By making the front wheel 91 a large diameter in this way, it is possible to improve the running performance of the vehicle 1 even on an uneven rough road.

The floor surface 93a is formed at a position lower than the position of the upper end of the front wheel 91. By forming the floor surface 93a in this way, a tall frame 94 can be loaded on the loading platform 93. In addition, it becomes easy to load the load on the frame 94 loaded on the loading platform 93 and to get the occupants on board. The vehicle 1 may be an automatically driven vehicle or a vehicle that is manually driven by the driver. Although the driver's seat is not shown in FIG. 2, the driver's seat may be provided on the frame 94. Since the floor surface 93a of the loading platform 93 is formed to be wide and low in the vehicle 1, a cooler such as a radiator for cooling the electrical components including the motor 2, the inverter 4, and the battery 5 should be installed below the loading platform 93. Is difficult. Further, it is difficult to provide a cooler inside the flat plate-shaped loading platform 93.

The loading platform 93 is provided with a heat transfer unit 8. The heat transfer unit 8 is a member that is heated by the transfer of heat generated from the battery 5, the inverter 4, and the motor 2 to transfer heat to the frame 94. The heat transfer portion 8 has, for example, a rectangular parallelepiped box shape and has a heat transfer surface 81 formed along the floor surface 93a of the loading platform 93. The heat transfer surface 81 is formed, for example, in a rectangular shape so as to be exposed on the floor surface 93a. The heat transfer surface 81 may be formed so as to be directly exposed to the floor surface 93a, or may be formed so as to be indirectly exposed to the floor surface 93a via a plate material or the like.

The number of heat transfer portions 8 corresponds to the number of motors 2 installed. For example, when six motors 2 are provided, six heat transfer units 8 are also provided. The heat transfer unit 8 is arranged so as to be dispersed on the floor surface 93a of the loading platform 93. For example, on the floor surface 93a, they are arranged in two rows in the vehicle width direction and three rows in the front-rear direction. By providing the heat transfer units 8 in a number corresponding to the number of installed motors 2 in this way, the heat transfer units 8 can be arranged in the vicinity of the motors 2. Therefore, the loss due to heat transfer to the heat transfer unit 8 is suppressed, and heat transfer to the frame 94 can be performed efficiently.

In FIG. 1, the vehicle 1 includes a motor 2, an ECU (Electronic Control Unit) 3, a mounting detection unit 61, and a wheel speed sensor 62. The motor 2 is a drive source for rotating the drive wheels. As the motor 2, for example, a motor generator that functions as an electric motor and a generator is used. The motor 2 is provided independently for the left and right drive wheels (front wheel 91 and rear wheel 92). The motor 2 may be provided as a wheel-in motor, or may be provided outside the drive wheels. The motor 2 operates according to a control signal output from the ECU 3. For example, a control signal input from the ECU 3 to the inverter 4 and output from the inverter 4 is input to the motor 2. The inverter 4 is a device that generates a signal for operating the motor 2. For example, the inverter 4 includes a plurality of inverter circuits (for example, a bridge circuit) corresponding to each motor 2, and generates a signal to be output to each motor 2 according to a control signal output from the ECU 3. The inverter 4 is connected to the battery 5 and operates by receiving the power supply of the battery 5. In FIG. 1, for convenience of explanation, signal lines are shown for electrical connections, and high-voltage wiring for driving the motor 2 is not shown. Further, although FIG. 1 shows one inverter 4 and one battery 5, the same number of inverters 4 and batteries 5 as the number of installed motors 2 may be provided separately. Further, the battery 5 may be configured to be rechargeable by supplying power from the outside of the vehicle 1. In this case, when the amount of electricity stored in the battery 5 becomes zero, the operation of the vehicle 1 can be ensured by supplying power from the outside, and the heat supply to the frame 94 in the heat transfer unit 8 can be continued. ..

The erection detection unit 61 detects the erection body information of the erection body 94 mounted on the loading platform 93. For example, the erection detection unit 61 detects a signal related to the erection body emitted from the erection body 94. The erection body information is information about a region capable of heat transfer in the erection body 94, and corresponds to, for example, information indicating the type of the erection body 94 and the heat transfer position of the erection body 94. The detection signal of the mounting detection unit 61 is input to the ECU 3.

The wheel speed sensor 62 is a device that detects the rotational speed of the wheels of the vehicle 1, and for example, an electromagnetic type sensor or other known sensor can be used. Wheel speed sensors 62 are provided for all of the front wheels 91 and the rear wheels 92, respectively. In FIG. 1, only one is shown for convenience of explanation. The detection signal of the wheel speed sensor 62 is input to the ECU 3. Further, it is possible to detect the vehicle speed of the vehicle 1 based on the detection signal of the wheel speed sensor 62.

The ECU 3 is an electronic control unit that controls the entire vehicle 1, and is composed of, for example, a computer including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). The ECU 3 includes a mounting information acquisition unit 31, a heat transfer control unit 32, a switching control unit 33, and a travel control unit 34. The mounting information acquisition unit 31, the heat transfer control unit 32, the switching control unit 33, and the travel control unit 34 are configured by, for example, introducing software or a program having these functions into the ECU 3. Further, the mounting information acquisition unit 31, the heat transfer control unit 32, the switching control unit 33, and the travel control unit 34 may be provided in the ECU 3 as separate control units.

The erection information acquisition unit 31 acquires the erection information of the erection body 94 mounted on the loading platform 93. For example, the mounting information acquisition unit 31 inputs the detection signal of the mounting detection unit 61 and records it as mounting information. Further, the mounting information acquisition unit 31 records the heat transfer unit 8 used for heat transfer to the mounting body 94 mounted on the loading platform 93 based on the mounting information. For example, when two heat transfer portions 8 on the rear side are used among the six heat transfer portions 8 according to the type or function of the frame 94, the heat transfer portions 8 used are two on the rear side. Is recorded.

The heat transfer control unit 32 performs heat transfer control so as to transfer the heat of electrical components such as the motor 2 to the heat transfer unit 8. For example, the heat transfer control unit 32 controls the heat medium H to circulate to the heat transfer unit 8 used for heat transfer to the frame 94 based on the frame information. Specifically, the heat transfer control unit 32 outputs a control signal to the pump 71, operates the pump 71, distributes the heat medium H to the electrical components such as the motor 2, and heats the electrical components through the heat medium H. Is moved to the heat transfer unit 8. As the heat medium H, for example, a fluid such as water is used.

The switching control unit 33 controls the switching of the switching valve 72. The switching valve 72 functions as a switching unit for switching the path through which the heat medium H flows, and is provided in the circulation path 75 of the heat medium H. The switching control unit 33 outputs a control signal to the switching valve 72, and operates the switching valve 72 so that the heat medium H flows through the heat transfer unit 8 used for heat transfer to the frame 94.

The travel control unit 34 controls the travel of the vehicle 1 so that the vehicle 1 travels in accordance with the travel command. That is, a control signal is output to the motor 2 according to the travel command. The travel command may be a command based on a driving operation by the driver of the vehicle 1, or may be a travel command generated according to a preset travel route.

3 and 4 are explanatory views of the circulation path 75 of the heat medium H.

The circulation path 75 is a distribution path of the heat medium H, and the heat medium H is circulated to move the heat generated from the motor 2, the inverter 4, and the battery 5 to the heat transfer unit 8 via the heat medium H. The arrows in FIGS. 3 and 4 indicate the distribution direction of the heat medium H.

FIG. 3 is an example of a circulation path 75 that transfers heat to each heat transfer unit 8. For example, when there are six heat transfer units 8, six circulation paths 75 in FIG. 3 are provided, and heat is individually transferred to the six heat transfer units 8. As shown in FIG. 3, the electrical components of the motor 2, the inverter 4, and the battery 5 are connected to the downstream side of the pump 71. The circulation path 75 is composed of a tube body capable of circulating the heat medium H, and is provided so as to come into contact with electrical components. The connection order of the motor 2, the inverter 4, and the battery 5 is not limited to the connection order shown in FIG. 3, and the connection order may be changed according to the arrangement position and the temperature state of the motor 2, the inverter 4, and the battery 5. Further, in FIG. 3, the motor 2, the inverter 4, and the battery 5 are connected in series, but the motor 2, the inverter 4, and the battery 5 may be connected in parallel.

A heat transfer unit 8 is connected to the downstream side of electrical components such as the motor 2. The heat transfer unit 8 is configured by, for example, reciprocating the tube body 82 with respect to the heat transfer surface 81. By configuring the heat transfer unit 8 in this way, the heat transfer surface 81 can be formed widely, and heat can be efficiently transferred to the frame 94. A pump 71 is connected to the downstream side of the heat transfer unit 8, and the heat medium H is returned to the pump 71.

When the circulation path 75 of FIG. 3 is used, for example, for the heat transfer unit 8 used for heat transfer to the frame 94, the pump 71 connected to the heat transfer unit 8 is operated to transfer the heat to the frame 94. For the heat transfer unit 8 that is not used for heat transfer, the pump 71 connected to the heat transfer unit 8 may not be operated. By controlling the operation of the pump 71 in this way, the heat transfer unit 8 used for heat transfer to the frame 94 and the heat transfer unit 8 not used for heat transfer to the frame 94 can be switched. Can be done.

FIG. 4 is an example of a circulation path 75 that transfers heat to all heat transfer portions 8. For example, by selectively flowing the heat medium H through the plurality of heat transfer units 8, it is used for heat transfer to the heat transfer unit 8 and the frame 94, which is used for heat transfer to the frame 94. It is possible to switch the heat transfer unit 8 that does not exist.

As shown in FIG. 4, the electrical components of the motor 2, the inverter 4, and the battery 5 are connected to the downstream side of the pump 71. For example, a motor 2, an inverter 4, and a battery 5 connected in series are connected in parallel. As a result, the heat medium H can be distributed to all the motors 2, the inverter 4, and the battery 5 mounted on the vehicle 1. The connection order of the motor 2, the inverter 4, and the battery 5 is not limited to the connection order shown in FIG. 4, and the connection order may be changed according to the arrangement position and the temperature state of the motor 2, the inverter 4, and the battery 5.

A switching valve 72 is connected to the downstream side of electrical components such as the motor 2. The switching valve 72 is a valve that switches the connection of the path to the heat transfer unit 8 connected to the downstream side. That is, the switching valve 72 is a valve mechanism that selectively connects the upstream path to the downstream path. All heat transfer portions 8 are individually connected to the downstream side of the switching valve 72. The switching valve 72 may be composed of, for example, a plurality of valves. The switching valve 72 operates in response to the control signal of the switching control unit 33, and distributes the heat medium H to the heat transfer unit 8 used for transferring heat to the frame 94. A pump 71 is connected to the downstream side of the heat transfer unit 8, and the heat medium H is returned to the pump 71.

5, 6 and 7 are perspective views of the vehicle 1 when the mounting body 94 is mounted.

As shown in FIGS. 5, 6 and 7, different types of mounting bodies 94 (941, 942 and 943) can be mounted on the loading platform 93 of the vehicle 1. The heat transfer unit 8 used may differ depending on the type or function of the frame 94. Therefore, it is necessary to switch the heat transfer unit 8 used for heat transfer according to the type and function of the frame 94 mounted on the loading platform 93.

FIG. 5 shows a vehicle 1 equipped with a frame 941 having a home delivery function. The body 941 is configured to be capable of loading a plurality of luggage 941a. Heat is transferred to the heat transfer unit 8 that comes into contact with the luggage 941a that needs to be kept warm with respect to the frame 941. The heat transfer unit 8 used for heat transfer may be determined in advance, and the luggage 941a requiring heat retention may be loaded at the position of the heat transfer unit 8. As a result, the heat generated from the electrical components can be effectively used in the frame 94. Further, since the heat is retained by the heat transfer of the heat transfer unit 8, it is not necessary to separately provide a heater such as a heater. Therefore, the power consumption for heating the heater can be reduced, and the decrease in the electric cost of the vehicle 1 can be suppressed.

FIG. 6 shows a vehicle 1 equipped with a frame 942 having a greenhouse cultivation function. The frame 942 has a large window and is configured to be capable of loading a plurality of planting portions 942a. The planting section 942a is a box for growing vegetables and plants. Heat is transferred to all the heat transfer portions 8 of the frame 942 so that the entire room is kept warm. By raising the room temperature by heat transfer of the heat transfer unit 8, it is not necessary to separately provide a heating device such as a heater. Therefore, the power consumption for operating the heating device can be reduced, and the decrease in the electric cost of the vehicle 1 can be suppressed.

FIG. 7 shows a vehicle 1 equipped with a frame 943 having a function of providing a living space. The frame 943 has a space like a living room of a house formed inside. Heat is transferred to all the heat transfer portions 8 of the frame 943 so that the entire room is kept warm. The heat transfer of the heat transfer unit 8 makes it possible to raise the room temperature, and it is possible to omit the installation of a separate air conditioner for heating. Therefore, the power consumption for operating the air conditioner can be reduced, and the decrease in the electric cost of the vehicle 1 can be suppressed.

As described above, the heat transfer unit 8 used for heat transfer differs depending on the type and function of the frame 94. Therefore, by switching the heat transfer unit 8 used for heat transfer to the mount 94 based on the mount information of the mount 94, appropriate heat transfer to the mount 94 can be performed. Note that FIGS. 5, 6 and 7 show an example of the frame 94 mounted on the vehicle 1, and the frame 94 having other functions may be mounted on the vehicle. For example, it may be a frame 94 provided with a temporary bath in the event of a disaster.

FIG. 8 is an explanatory diagram of the heat storage device in the vehicle 1. As shown in FIG. 8, the frame 94 may be provided with a heat storage device 94b. The heat storage device 94b is a device or member that stores heat transferred from the heat transfer unit 8. As the heat storage device 94b, for example, one that stores water in a tank is used. The heat storage device 94b is provided, for example, in the equipment 94a provided in the frame 94. The heat storage device 94b is arranged at the installation position of the heat transfer unit 8 and receives the heat of the heat transfer unit 8 to store heat. For example, the heat generated when the vehicle 1 is running can be stored in the heat storage device 94b, and the heat stored in the heat storage device 94b can be used when the running is stopped. Since the heat storage device 94b is provided on the frame 94, it is not necessary to provide the heat storage device 94b inside the loading platform 93 or below the loading platform 93. Further, heat can be stored even when there is no space for providing the heat storage device 94b inside the loading platform 93 or below the loading platform 93.

Next, an example of the operation of the vehicle 1 according to the present embodiment will be described.

FIG. 9 is a flowchart of heat transfer control processing in the vehicle 1. The heat transfer control process of FIG. 9 is executed by, for example, the ECU 3.

First, as shown in step S10 of FIG. 3 (hereinafter, simply referred to as “S10”. The same applies to the steps after S10), the mounting information acquisition process is performed. This mounting information acquisition process is a process of acquiring the mounting information of the mounting body 94 mounted on the vehicle 1. For example, the mounting information acquisition unit 31 inputs the detection signal of the mounting detection unit 61 and records it as mounting information. Further, the mounting information acquisition unit 31 records the heat transfer unit 8 used for heat transfer to the mounting body 94 mounted on the loading platform 93 based on the mounting information.

Then, the process shifts to S12, and the switching control process is performed. The switching control process is a process for allowing the heat medium H to circulate in the heat transfer unit 8 used for heat transfer to the frame 94. For example, when the circulation path 75 shown in FIG. 3 is used, the pump 71 connected to the heat transfer unit 8 used for heat transfer to the frame 94 is selected as the operation target. Further, when the circulation path 75 shown in FIG. 4 is used, the switching valve 72 is switched so that the heat medium H flows through the heat transfer unit 8 used for heat transfer to the frame 94. That is, the switching control unit 33 outputs a control signal to the switching valve 72, and operates the switching valve 72 so that the heat medium H flows through the heat transfer unit 8 used for heat transfer to the frame 94. ..

Then, the process shifts to S14, and the heat transfer control process is performed. The heat transfer control process is a process of transferring the heat of electrical components such as the motor 2 to the heat transfer unit 8. For example, the heat transfer control unit 32 outputs a control signal to the pump 71, operates the pump 71, distributes the heat medium H to the electrical components such as the motor 2, and transfers the heat of the electrical components through the heat medium H. Move to part 8. At this time, when the pump 71 to be operated is selected in the switching control process of S12, only the pump 71 operates. By performing the heat transfer control process in this way, the heat generated from the electrical components such as the motor 2 can be transferred to the heat transfer unit 8. As a result, heat can be dissipated from the electrical components.

Further, the heat transferred to the heat transfer unit 8 is transferred to the frame 94. The heat transfer at this time is performed by conduction, for example, by bringing the frame 94 into contact with the heat transfer unit 8. As a result, the heat generated from the electrical components can be effectively used in the frame 94. When the process of S14 is completed, the series of control processes of FIG. 9 is completed.

As described above, according to the vehicle 1 according to the present embodiment, the heat generated from the battery 5, the inverter 4, and the motor 2 is transferred to the heat transfer unit 8 and transferred from the heat transfer unit 8 to the frame 94. Can be heated. As a result, the heat of the battery 5, the inverter 4, or the motor 2, which becomes hot during operation, can be dissipated without providing a cooler, and the heat can be effectively used in the frame 94. Further, since the heat transfer unit 8 forms the heat transfer surface 81 along the floor surface 93a of the loading platform 93, the heat generated from the battery 5, the inverter 4, or the motor 2 can be efficiently transferred to the frame 94. Can be done.

According to the vehicle 1 according to the present embodiment, heat is transferred to the frame 94 through the heat transfer surface 81 formed on the loading platform 93, so that even if the mounting is changed to another body 94, the body 94 Can perform heat transfer to. Therefore, although the structure is simple, heat can be reliably transferred to the frame 94.

Further, according to the vehicle 1 according to the present embodiment, the heat transfer units 8 can be arranged in the vicinity of the motor 2 by providing the heat transfer units 8 in a number corresponding to the number of installed motors 2. Therefore, the loss due to the transfer of heat to the heat transfer unit 8 is suppressed, and heat can be efficiently transferred to the frame 94.

Further, according to the vehicle 1 according to the present embodiment, switching control is performed to switch the heat transfer unit 8 used for heat transfer to the frame according to the frame 94 mounted on the loading platform 93. Therefore, since the heat transfer unit 8 used for heat transfer can be switched according to the frame 94, the heat generated from the battery 5, the inverter 4 or the motor 2 is transferred to the required heat transfer unit 8 to generate heat. Energy can be used effectively.

Further, according to the vehicle 1 according to the present embodiment, by providing the frame 94 with a heat storage device 94b for storing heat transferred from the heat transfer unit 8, there is a space for installing the heat storage device 94b on the loading platform 93 or the like. Even if it does not exist, heat storage can be performed.

It should be noted that the above-described embodiment describes one embodiment of the electric vehicle according to the present invention, and the electric vehicle according to the present invention is not limited to the one described in the above-described embodiment. The electric vehicle according to the present invention may be a modified electric vehicle according to the above embodiment or applied to another one so as not to change the gist described in each claim.

For example, in the vehicle 1 according to the above-described embodiment, the case where the heat generated from all of the battery 5, the inverter 4, and the motor 2 is transferred to the heat transfer unit 8 has been described, but one of the battery 5, the inverter 4, and the motor 2 The vehicle may be a vehicle that transfers the heat generated from the unit to the heat transfer unit 8. For example, the vehicle may be a vehicle in which the heat generated from the motor 2 is transferred to the heat transfer unit 8 to dissipate heat from the motor 2 and the heat generated from the motor 2 is used in the frame 94. Even in this case, the same effect as that of the vehicle 1 according to the above-described embodiment can be obtained.

Further, in the vehicle 1 according to the above-described embodiment, the case where the vehicle 1 is provided with six wheels, one front wheel 91 on each side and two rear wheels 92 on each side, the vehicle 1 has wheels other than the six wheels. It may be a vehicle, or it may be a vehicle in which all wheels are not driving wheels. For example, the vehicle 1 may be a four-wheeled vehicle. Further, in the vehicle 1, only the left and right front wheels may be driving wheels, and the other wheels may be driven wheels. Even in this case, the same effect as that of the vehicle 1 according to the above-described embodiment can be obtained.

1 ... Vehicle (electric vehicle), 2 ... Motor, 3 ... ECU, 4 ... Inverter, 5 ... Battery, 8 ... Heat transfer unit, 31 ... Mounting information acquisition unit, 32 ... Heat transfer control unit, 33 ... Switching control unit , 34 ... Travel control unit, 61 ... Mount detection unit, 62 ... Wheel speed sensor, 71 ... Pump, 72 ... Switching valve (switching unit), 75 ... Circulation path, 81 ... Heat transfer surface, 82 ... Tube, 91 ... front wheel, 92 ... rear wheel, 93 ... loading platform, 93a ... floor surface, 94 ... frame, 94b ... heat storage device.

Claims (1)

In an electric vehicle that runs by operating an inverter using the electric power of a battery and driving a motor.
With a loading platform on which the frame can be mounted,
Provided on the loading platform, the battery, the inverter, and a heat transfer unit for heating by the transfer of heat generated from all or a part of the motor and transferring heat to the frame.
The heat transfer portion has a heat transfer surface formed along the floor surface of the loading platform.
Electric vehicle.

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