Electric vehicle

Abstract

To provide an electric vehicle for securing electric power to a power storage device for easily supplying electric power to a motor.SOLUTION: An electric vehicle includes a first power storage device, an input-side terminal portion, a cable, a second power storage device, and a motor that is driven based on electric power from the second power storage device and rotates a wheel. The first power storage device is capable of supplying power to an external device separate from the electric vehicle and is capable of supplying power to the second power storage device via the cable passing through the outside of the vehicle body and the input-side terminal portion. When the first electrical storage device is connected to the input-side terminal portion via the cable, the second electrical storage device stores electric power supplied from the first electrical storage device. When an external power source separate from the electric vehicle is connected to the input-side terminal portion via the cable or another cable, the second electrical storage device stores electric power supplied from the external power source.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a power supply device and the like. [Background technology]

[0002] Conventionally, electric vehicles (electrically driven vehicles) have been proposed, such as those disclosed in Patent Document 1. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-208132 Summary of the Invention [Problem to be solved by the invention]

[0004] However, if power is supplied to a power storage device for driving a motor while the vehicle is running, control of power supply to the motor becomes complicated.

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide an electric vehicle that can easily secure power for a power storage device that supplies power to a motor. [Means for solving the problem]

[0006] The electric vehicle according to the present invention includes a first power storage device, an input terminal unit, a cable, a second power storage device, and a motor that is driven based on electric power from the second power storage device to rotate wheels. The first power storage device is capable of supplying power to an external device separate from the electric vehicle, and is also capable of supplying power to the second power storage device via the cable that passes outside the vehicle body and the input side terminal portion. When the first power storage device is connected to the input terminal portion via the cable, the second power storage device stores the power supplied from the first power storage device. When an external power source separate from the electric vehicle is connected to the input side terminal portion via the cable or another cable, the second power storage device stores the power supplied from the external power source.

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

[0022]

[0023]

[0024]

[0025] [Effects of the Invention]

[0026] As described above, according to the present invention, it is possible to provide an electric vehicle that can easily secure power for a power storage device that supplies power to a motor. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a configuration diagram of an electric vehicle according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0028] The present embodiment will be described below with reference to the drawings. The embodiments are not limited to the following embodiments. Furthermore, the content described in one embodiment is generally applicable to other embodiments as well. Furthermore, the embodiments and modifications can be combined as appropriate.

[0029] (Electric Vehicle 1) The electric vehicle 1 of this embodiment includes a vehicle body 2, a power generation unit 10 (first power generation device 11, second power generation device 12), a power storage unit 20 (first power storage device 21, second power storage device 22), a hydrogen generation unit 30 (electrolyte supply unit 31, water electrolysis device 33, hydrogen tank 35, tank holding unit 37), a conversion unit 40 (conversion device 41, output side terminal unit 43, input side terminal unit 44, cable 45), a motor 50, and wheels 60 (see FIG. 1).

[0030] (Vehicle body 2) The vehicle body 2 holds a power generation unit 10, a power storage unit 20, a hydrogen generation unit 30, a conversion unit 40, and a motor 50. The electric vehicle 1 is a vehicle that receives a supply of electric power from an external source or from a first power storage device 21 via an input terminal unit 44 (described later), drives a motor 50, and at least the wheels 60 rotate when driven by the motor 50. A part of the electric vehicle 1 may be configured as an existing electric vehicle or a plug-in hybrid vehicle. In this case, a part of the electrically powered vehicle 1 (an existing electric vehicle or a plug-in hybrid vehicle) includes the second power storage device 22, the input side terminal unit 44, the motor 50, and the wheels 60. The electric vehicle 1 of this embodiment is formed by adding a first power generation device 11, a first power storage device 21, a cable 45, and the like to the existing electric vehicle or plug-in hybrid vehicle.

[0031] (Power Generation Unit 10) The power generation section 10 includes a first power generation device 11 and a second power generation device 12 .

[0032] (First power generating unit 11) The first power generating device 11 is a power generating device (renewable energy-derived power generating device) that generates power based on natural energy (renewable energy), such as a solar power generating device or a wind power generating device. The first power generating device 11 is always in a state where it can generate power. However, if the first power generating device 11 is a wind power generating device and the wind force received by the first power generating device 11 exceeds a predetermined wind force, the first power generating device 11 is put into a state in which it cannot generate power. The first power generating unit 11 is installed on the upper surface of the vehicle body 2, such as on the roof. The electric power obtained by the first power generation device 11 is supplied to the first power storage device 21, the water electrolysis device 33, the external device A200, and the like under the control of the control device 11a.

[0033] (Control device 11a) The control device 11a includes a power conditioner, a distribution board, and the like, and controls switching of power supply destinations. Specifically, the control device 11a is connected to the first power generation device 11 on the input side. The control device 11a is connected to the first electricity storage device 21, the water electrolysis device 33, and the tank holding unit 37 on the output side. When storing power in the first power storage device 21 based on the power obtained by the first power generation device 11, the control device 11a causes the first power storage device 21 to supply the power obtained by the first power generation device 11. When hydrogen is stored (absorbed) in the hydrogen tank 35 based on the power generated by the first power generation device 11, the control device 11a causes the power generated by the first power generation device 11 to be supplied to the water electrolysis device 33 and the tank holding unit 37. At this time, the tank holding unit 37 stops cooling or heating the hydrogen tank 35 that it holds. When releasing the hydrogen stored in the hydrogen tank 35, the control device 11a causes the power obtained by the first power generation device 11 to be supplied to the tank holding unit 37. At this time, the tank holding unit 37 warms the hydrogen tank 35 that it holds or stops cooling. The control device 11a is installed inside the vehicle body 2 or the like.

[0034] The control device 11a may be connected to an electrical device (external device A200) outside the electric vehicle 1, such as an electrical device installed in a building, via a connection terminal (not shown). In this case, the control device 11a converts the power from the first power generation device 11 or the first power storage device 21 from DC to AC and / or converts it to a desired current and voltage, and supplies it to the external device A200.

[0035] When the state of charge R1 of the first power storage device 21 is high above the first charge rate threshold Thr1 (R1≧Thr1, for example, Thr1 = 60%) or when power is being supplied from the first power storage device 21 to the second power storage device 22 via a cable 45 or the like, the control device 11a accumulates (absorbs) hydrogen in the hydrogen tank 35 based on the power obtained by the first power generation device 11. When the charge rate R1 of the first power storage device 21 is lower than the first charge rate threshold Thr1 (R1 < Thr1) and power is not being supplied from the first power storage device 21 to the second power storage device 22 via a cable 45 or the like, the control device 11a accumulates power in the first power storage device 21 based on the power obtained by the first power generation device 11. The determination as to whether power is being supplied from the first power storage device 21 to the second power storage device 22 is made based on whether the cable 45 is connected to the output side terminal portion 43 and whether current is flowing through the cable 45 via the output side terminal portion 43.

[0036] (Operation control of the second power generation device 12) In addition, the control device 11a performs operation control of the second power generation device 12. Specifically, when the charge rate R1 of the first power storage device 21 is lower than the second charge rate threshold value Thr2 (Thr2 < Thr1, for example, Thr2 = 40%), the charge rate R2 of the second power storage device 22 is lower than the second charge rate threshold value Thr2, and the hydrogen filling rate R3 of the hydrogen tank 35 is higher than or equal to the hydrogen filling rate threshold value Thr3, the control device 11a drives the second power generation device 12 (R1 < Thr2, R2 < Thr2, R3 ≥ Thr3).

[0037] The hydrogen filling rate R3 is defined as the ratio of the amount of hydrogen stored (absorbed by the hydrogen storage alloy) in the hydrogen tank 35 (cc / g or wt%) to the maximum amount of hydrogen that can be stored in the hydrogen tank 35. The hydrogen filling rate R3 is calculated based on, for example, the expansion rate of the hydrogen storage alloy detected by a detection device 35a such as a strain sensor attached to the hydrogen storage alloy of the hydrogen tank 35. Alternatively, the hydrogen filling rate R3 may be calculated based on, for example, the amount of hydrogen flowing into and discharged from the hydrogen tank 35 detected by a detection device 35a such as a flow sensor provided in the communication pipe 36.

[0038] [[ID=十二]](Input / output control of the conversion device 41) In addition, the control device 11a performs input / output control of the conversion device 41. Specifically, when supplying power from the first power storage device 21 to the second power storage device 22 via a cable 45 or the like, the control device 11a cuts off the input (power supply) from the second power generation device 12 to the conversion device 41. When supplying power from the second power generation device 12 to the second power storage device 22 via a cable 45 or the like, the control device 11a cuts off the input (power supply) from the first power storage device 21 to the conversion device 41.

[0039] (Power supply cutoff control to the second power storage device 22) It should be noted that in the translation of "[[ID=十二]]", since the original text seems to be a numbered item but the number is in Chinese characters, it's not clear if there's a specific error or if it's a non-standard format. I've translated it as "(Input / output control of the conversion device 41)" following the context. If this is incorrect, please provide more accurate information.However, while second power storage device 22 is discharging, such as while the vehicle is running, that is, at least when second power storage device 22 drives motor 50, control device 11a cuts off the output (power supply) from conversion device 41 to second power storage device 22 via cable 45 or the like. In this case, even if cable 45 is connected between output side terminal unit 43 and input side terminal unit 44, no current flows through cable 45.

[0040] The cutoff control of the output (power supply) from the conversion device 41 to the second power storage device 22 via the cable 45 or the like may be performed not only while the vehicle is traveling, but also while the accessory switch of the electric vehicle 1 is in the on state.

[0041] (Second power generating unit 12) The second power generator 12 is a power generator (fuel cell) that generates electricity based on hydrogen. The second power generation device 12 is set to a state in which it can generate power when the state of charge of the second power storage device 22 is not sufficient (when the charging rate R2 of the second power storage device 22 is lower than the second charging rate threshold Thr2). The second power generating device 12 is installed inside the vehicle body 2 or the like. The electric power obtained by the second power generation device 12 is supplied to the second power storage device 22 via the converter 41, the cable 45, and the like under the control of the control device 11a. The hydrogen used in the second power generation device 12 is hydrogen obtained in the water electrolysis device 33 and hydrogen stored in the hydrogen tank 35. The oxygen used in the second power generating device 12 may be oxygen in the air or oxygen obtained in the water electrolysis device 33 .

[0042] (Electricity storage unit 20) The power storage unit 20 includes a first power storage device 21 and a second power storage device 22.

[0043] (First power storage device 21) The first power storage device 21 is configured by a battery or the like, and stores the electric power obtained by the first power generation device 11. The first power storage device 21 is used to temporarily store electric power before charging the second power storage device 22, for example, while the vehicle is running. The first power storage device 21 may be used to drive electrical devices that configure the electric vehicle 1, such as the control device 11a. In addition, if the electric vehicle 1 includes an internal combustion engine such as an engine in addition to the motor 50 to rotate the wheels 60, the power storage unit 20 may have a starting battery separate from the first power storage device 21 and the second power storage device 22. The first power storage device 21 preferably has a capacity (for example, 15 kWh) that is about 7.5 times the amount of power generated by the first power generation device 11 in one day (for example, 2 kWh). Moreover, it is desirable that the first power storage device 21 has a capacity that is about two-thirds of the capacity (for example, 24 kWh) of the second power storage device 22 described below. The first power storage device 21 is provided in the luggage compartment of the electric vehicle 1 or the like. The first power storage device 21 may be a portable device that can be removed from the electric vehicle 1, or may be a fixed device that is fixed to the electric vehicle 1.

[0044] The first power storage device 21 may be used to store the electric power generated by the second power generation device 12. For example, when the charging rate R1 of the first power storage device 21 is lower than the second charging rate threshold Thr2, the charging rate of the second power storage device 22 is higher than or equal to the first charging rate threshold Thr1, and the hydrogen filling rate R3 of the hydrogen tank 35 is higher than or equal to the hydrogen filling rate threshold Thr3, the electric power obtained by the second power generation device 12 is supplied to the first power storage device 21 (R1 <Thr2、R2≧Thr1、R3≧Thr3)。

[0045] (Second power storage device 22) The second power storage device 22 is configured by a battery or the like, and is used to drive the motor 50, that is, to supply power to the motor 50. Second power storage device 22 stores electric power supplied from a device connected via input terminal unit 44. Specifically, when input terminal unit 44 and output terminal unit 43 are connected via cable 45 or the like, second power storage device 22 stores electric power stored in first power storage device 21 and electric power obtained from hydrogen stored in hydrogen tank 35 (electric power obtained by second power generation device 12). Furthermore, when input terminal unit 44 and an external power source (not shown) are connected via cable 45 or another cable (not shown), second power storage device 22 stores electric power supplied from the external power source.

[0046] (Hydrogen generating unit 30) The hydrogen generator 30 includes an electrolyte supply unit 31, a water electrolysis device 33, and a hydrogen tank .

[0047] (Electrolyte supply section 31) The electrolyte supply unit 31 includes a water storage tank and the like, and supplies the water electrolysis device 33 with an electrolyte such as water for electrolysis. The electrolyte supply unit 31 includes at least one of a rainwater receiving port 31a provided on the upper surface of the vehicle body 2 and a dehumidifier 31b provided inside the vehicle body 2, and a liquid transfer pipe 31c. Rainwater collected through rainwater receiving port 31a or water collected through dehumidifier 31b is stored as an electrolyte in the water storage tank of electrolyte solution supply unit 31 through liquid transfer pipe 31c and supplied to water electrolysis device 33. However, water obtained outside of electric vehicle 1 by a user of electric vehicle 1 or the like may also be stored in the water storage tank of electrolyte solution supply unit 31 and supplied to water electrolysis device 33. Furthermore, a part of the air conditioner of the electric vehicle 1 may function as the dehumidifier 31b, and water produced by condensation during operation of the air conditioner may be accumulated in the water storage tank of the electrolyte solution supply unit 31 and supplied to the water electrolysis device 33. The supply of the electrolyte from the water storage tank of the electrolyte supply unit 31 to the water electrolysis device 33 may be controlled by the control device 11a, or may be mechanically controlled so that the amount of electrolyte inside the water electrolysis device 33 is maintained at a constant level.

[0048] (Water electrolysis device 33) The water electrolysis device 33 electrolyzes the electrolyte supplied from the electrolyte supply unit 31 based on the electric power supplied from the first power generation device 11 or the like, to generate hydrogen. The electrolytic solution supply unit 31 and the water electrolysis device 33 may be configured as separate bodies or as an integrated body.

[0049] (Hydrogen tank 35) The hydrogen tank 35 has a hydrogen storage alloy that stores hydrogen and a container that holds the hydrogen storage alloy. The container of the hydrogen tank 35 holds the hydrogen storage alloy inside. The hydrogen tank 35 stores hydrogen under high pressure or low temperature and releases the stored hydrogen when the state is no longer under high pressure or low temperature. The hydrogen tank 35 is connected to the second power generation device 12 and the water electrolysis device 33 via a connecting pipe 36 .

[0050] At least one of the hydrogen tank 35 and the communication pipe 36 is provided with a detection device 35a including a strain sensor, a flow rate sensor, a temperature sensor, and the like. The strain sensor or flow rate sensor of the detection device 35a is used to calculate the degree of hydrogen filling in the hydrogen tank 35 (hydrogen filling rate R3). The temperature sensor of the detection device 35 a is used to calculate the internal temperature T 1 of the hydrogen tank 35 .

[0051] The tank holder 37 holds the hydrogen tank 35 in a detachable manner. Furthermore, the tank holding unit 37 performs at least one of heating the hydrogen tank 35 for hydrogen release and cooling the hydrogen tank 35 for hydrogen storage.

[0052] When the internal temperature T1 of the hydrogen tank 35 is equal to or higher than the first temperature threshold Tht1 (for example, Tht1=0°C) and hydrogen is stored (absorbed) in the hydrogen tank 35, the tank holding unit 37 cools the hydrogen tank 35 (T1≧Tht1). However, when the internal temperature T1 of the hydrogen tank 35 is less than the first temperature threshold value Tht1, such as when the outside air temperature is low, and hydrogen is accumulated (occluded) in the hydrogen tank 35, the tank holding part 37 may not cool the hydrogen tank 35 (T1 < Tht1).

[0053] When the internal temperature T1 of the hydrogen tank 35 is less than the second temperature threshold value Tht2 (Tht1 < Tht2, for example, Tht2 = 50°C), and the hydrogen accumulated in the hydrogen tank 35 is released, the tank holding part 37 heats the hydrogen tank 35 (T1 < Tht2). However, when the internal temperature T1 of the hydrogen tank 35 is equal to or higher than the second temperature threshold value Tht2, such as when the outside air temperature is high, and the hydrogen accumulated in the hydrogen tank 35 is released, the tank holding part 37 may not heat the hydrogen tank 35 (T1 ≥ Tht2).

[0054] That is, when the internal temperature T1 of the hydrogen tank 35 is equal to or higher than the first temperature threshold value Tht1, hydrogen occlusion in the hydrogen tank 35 is performed while the hydrogen tank 35 is cooled by the tank holding part 37. When the internal temperature T1 of the hydrogen tank 35 is less than the first temperature threshold value Tht1, hydrogen occlusion in the hydrogen tank 35 is performed without cooling the hydrogen tank 35 by the tank holding part 37. Further, when the internal temperature T1 of the hydrogen tank 35 is less than the second temperature threshold value Tht2, hydrogen release in the hydrogen tank 35 is performed while the hydrogen tank 35 is heated by the tank holding part 37. Further, when the internal temperature T1 of the hydrogen tank 35 is equal to or higher than the second temperature threshold value Tht2, hydrogen release in the hydrogen tank 35 is performed without heating the hydrogen tank 35 by the tank holding part 37. Thereby, when hydrogen occlusion is possible without cooling the hydrogen tank 35 and when hydrogen release is possible without heating the hydrogen tank 35, it becomes possible to suppress the power consumption of the tank holding part 37.

[0055] In this embodiment, the hydrogen tank 35 is described as being portable and detachable from the tank holding part 37. However, the hydrogen tank 35 may be fixed to the tank holding part 37 or the like without consideration of detachment. In this embodiment, the hydrogen tank 35 stores hydrogen by absorbing it into a storage alloy. However, the hydrogen tank 35 may store any of an organic hydride containing hydrogen, liquefied hydrogen, and compressed gaseous hydrogen.

[0056] (Conversion unit 40) The conversion section 40 includes a conversion device 41 , an output terminal section 43 , an input terminal section 44 , and a cable 45 .

[0057] (Conversion device 41) The conversion device 41 is a charging device including an AC / DC converter, a DC / DC converter, and the like. Furthermore, the conversion device 41 converts the electric power from the first power storage device 21 into a current and voltage suitable for charging the second power storage device 22, and supplies the converted electric power to the second power storage device 22 via a cable 45 or the like. Furthermore, the conversion device 41 converts the electric power from the second power generation device 12 into a current and voltage suitable for charging the second power storage device 22, and supplies the converted electric power to the second power storage device 22 via a cable 45 or the like.

[0058] (Fast charging of converter 41) It is desirable that the conversion device 41 is a rapid charging device that supplies power from the first storage device 21 or the second power generation device 12 to the second storage device 22 via a cable 45 or the like, while increasing at least one of the voltage and current under the control of the control device 11a. For example, the control device 11a performs the rapid charging when the charging rate R2 of the second power storage device 22 is higher than or equal to the second charging rate threshold Thr2 and lower than the first charging rate threshold Thr1 (Thr2≦R2 <Thr1)。 In addition, when the charging rate R2 of the second storage device 22 is lower than the second charging rate threshold Thr2 or higher than the first charging rate threshold Thr1, the control device 11a does not perform the rapid charging, but instead performs normal charging without increasing the voltage and current (Thr2>R2, or Thr1≦R2). However, the control device 11a may be configured not to perform the rapid charging or the normal charging when the charging rate R2 of the second power storage device 22 is higher than or equal to the first charging rate threshold Thr1.

[0059] (Application example of converter 41) In the present embodiment, an example has been described in which the conversion device 41 is provided between the output terminal unit 43 and the first power storage device 21. However, instead of or in addition to the configuration in which the conversion device 41 is provided between the output terminal unit 43 and the first power storage device 21, the conversion device 41 may be provided between the second power storage device 22 and the input terminal unit 44.

[0060] (output side terminal part 43, input side terminal part 44, cable 45) The output terminal section 43 is an output terminal for supplying electric power from the first power storage device 21 or the second power generation device 12. Input side terminal unit 44 is an input terminal for supplying power to second power storage device 22 (for receiving power supply from the outside or first power storage device 21 or second power generation device 12 for charging). Input side terminal unit 44 is provided, for example, on the side of vehicle body 2 or in the engine compartment. Therefore, when first power storage device 21 and conversion device 41 are installed in a trunk room, cable 45 is connected to input side terminal unit 44 from the trunk room through the outside of vehicle body 2 with the trunk lid open (it is unlikely that wiring can be performed while driving).

[0061] The cable 45 is an electric cable for electrically connecting the output side terminal portion 43 and the input side terminal portion 44 . Cable 45 is, for example, a coaxial cable, and includes an electric wire 45a, a covering 45b covering electric wire 45a, a first terminal 45c connected to input terminal 44, and a second terminal 45d connected to output terminal 43. Electric wire 45a is composed of an inner conductor, an insulator covering the inner conductor, and an outer conductor covering the insulator, and covering 45b covers the outer conductor. However, cable 45 is not limited to a coaxial cable. For example, electric wire 45a may include a positive inner conductor and a negative inner conductor arranged in parallel with the positive inner conductor with an insulator sandwiched therebetween, and these may be covered with covering 45b. The output terminal portion 43 may be omitted, and the converter 41 may be directly connected to the cable 45. In this case, the second terminal portion 45d is omitted.

[0062] (Motor 50, Wheels 60) The motor 50 is driven based on the electric power from the second power storage device 22 to rotate the wheels 60 of the electric vehicle 1.

[0063] (Effects of Providing the First and Second Power Storage Devices 21 and 22) Electric power is temporarily stored in the first power storage device 21. Therefore, without complicating the control of the power supply from the second power storage device 22 to the motor 50, when the charging rate R2 of the second power storage device 22 becomes low, electric power can be immediately supplied from the first power storage device 21 to the second power storage device 22 via the cable 45 or the like. This makes it possible to use the first power storage device 21 as a battery (backup power source) for the second power storage device 22.

[0064] (Effect of supplying power to second power storage device 22 via cable 45 and input terminal portion 44) The first power storage device 21 and the second power storage device 22 are electrically connected via the cable 45 and the input side terminal portion 44. Therefore, unless the cable 45 is connected to the input side terminal portion 44, power is not accidentally supplied from the first power storage device 21 to the second power storage device 22. This reduces the possibility of damage to the second power storage device 22, which is fixed to the vehicle body 2 and is difficult to remove.

[0065] (The effect of being able to utilize existing electric vehicles, etc.) The electric vehicle 1 of this embodiment can be easily formed by simply adding the first power generation device 11, the first power storage device 21, etc. to an existing electric vehicle or plug-in hybrid vehicle that includes the second power storage device 22, the input side terminal portion 44, the motor 50, and the wheels 60. Since power is supplied via the input terminal portion 44 rather than directly to the second storage device 22, there is little possibility that the first power generation device 11 added to an existing electric vehicle or the like will adversely affect the control and / or operation of the second storage device 22 and / or motor 50.

[0066] (Effect of providing the hydrogen generation unit 30) Electric power is temporarily stored in the first power storage device 21, and hydrogen generated based on the electric power is stored in the hydrogen generation unit 30. Therefore, without complicating the control of the power supply from the second power storage device 22 to the motor 50, power can be immediately supplied to the second power storage device 22 via a cable 45 or the like from the first power storage device 21 or from the hydrogen generation unit 30 and the second power generation device 12 when the charging rate R2 of the second power storage device 22 becomes low, for example.

[0067] Since the first power storage device 21 and the hydrogen generator 30 store electric power or hydrogen based on electric power, it is possible to store more energy than in a configuration in which only electric power is stored. When the electric vehicle 1 will not be driven for an extended period of time, hydrogen is generated based on the electric power obtained by the first power generation device 11, and the hydrogen is filled into the hydrogen tank 35. By replacing the hydrogen tank 35, the energy obtained by the first power generation device 11 can be effectively stored as hydrogen. When the electric vehicle 1 is driven frequently, when the vehicle is stopped or the accessory switch is turned off, power is supplied to the second power storage device 22 from the first power storage device 21 or the hydrogen generation unit 30 and the second power generation device 12 via a cable 45 or the like, and when the vehicle is traveling, power is stored in the first power storage device 21 and hydrogen is filled in the hydrogen generation unit 30.

[0068] (The effect of using rainwater as an electrolyte) By using rainwater or water obtained from humidity inside the vehicle cabin as the electrolyte, it becomes possible to continue storing hydrogen even when there is little supply of materials from outside.

[0069] (Effect of Controlling to Cut Off Power Supply to Second Power Storage Device 22) This reduces the possibility that power is supplied from an external source to the second power storage device 22 while the motor 50 is being driven, causing fluctuations in the voltage of the second power storage device 22 and adversely affecting the control of the motor 50.

[0070] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, as well as within the scope of the invention described in the claims and their equivalents. [Explanation of symbols]

[0071] 1 Electric vehicles 2 Vehicle body 10 Power Generation Department 11 First power generating unit 11a Control device 12 Second power generating unit 20 Power storage unit 21 First power storage device 22 Second power storage device 30 Hydrogen generation unit 31 Electrolyte supply section 31a Rainwater outlet 31b Dehumidifier 31c Liquid feed pipe 33 Water electrolysis equipment 35 Hydrogen Tank 35a Detection device 36 Communication pipe 37 Tank holder 40 Conversion unit 41 Conversion Device 43 Output terminal section 44 Input terminal section 45 Cable 45a Electrical wire 45a 45b Covering part 45c 1st terminal section 45d 2nd terminal section 50 motor 60 wheels A200 External equipment (external electrical equipment) R1 Charging rate of the first storage device R2 Charging rate of the second storage device R3 Hydrogen tank hydrogen filling rate T1 Internal temperature of hydrogen tank Thr1 First charge rate threshold (full charge) Thr2 Second charge rate threshold Thr3 Hydrogen filling rate threshold Tht1 First temperature threshold Tht2 Second temperature threshold

Claims

[Claim 1] a first power storage device; an input side terminal portion; Cable and a second power storage device; a motor that is driven based on electric power from the second power storage device and rotates wheels, the first power storage device is capable of supplying electric power to an external device separate from the electric vehicle, and is capable of supplying electric power to the second power storage device via the cable passing outside the vehicle body and the input-side terminal portion, When the first power storage device is connected to the input terminal portion via the cable, the second power storage device stores the power supplied from the first power storage device, When an external power source separate from the electric vehicle is connected to the input side terminal portion via the cable or another cable, the second power storage device stores the power supplied from the external power source.

Images