On-board power supply device

Abstract

To reduce power loss in charging of a power storage device using surplus power from an external photovoltaic generator.SOLUTION: An on-board power supply device comprises: a power storage device; an on-board photovoltaic generator installed on a vehicle; a power conditioner which performs charging of the power storage device using generated power from the on-board photovoltaic generator, charging of the power storage device using surplus power from an external photovoltaic generator installed in an external facility, and supply of power from the power storage device to the external facility; and a control device which controls the power conditioner. The control device starts heating of the power storage device when the generated power from the on-board photovoltaic generator becomes equal to or greater than a first predetermined power, and thereafter controls the power conditioner so that the charging of the power storage device using the surplus power from the external photovoltaic generator is performed.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to an in-vehicle power supply device, and more particularly to an in-vehicle power supply device that has a power storage device and performs charging of the power storage device using surplus power from a solar power generation device installed in an external facility and supply of power from the power storage device to the external facility.

Background Art

[0002] Conventionally, as this type of in-vehicle power supply device, there has been proposed one that has an in-vehicle solar power generation device and a power storage device and electrically connects a house having the solar power generation device and the power storage device (see, for example, Patent Document 1). In this in-vehicle power supply device, charging of the in-vehicle power storage device with the generated power from the in-vehicle solar power generation device, charging of the in-vehicle power storage device with the generated power from the solar power generation device of the house, and supply of power from the in-vehicle power storage device to the house are enabled.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above-described in-vehicle power supply device, since the temperature of the power storage device needs to be at a temperature suitable for charging when charging the in-vehicle power storage device using surplus power from the solar power generation device of the house, when the vehicle side and the house side are electrically connected, the power storage device is always heated, resulting in increased power loss.

[0005] The main object of the in-vehicle power supply device of the present disclosure is to reduce power loss in charging the power storage device using surplus power from an external solar power generation device.

Means for Solving the Problems

[0006] To achieve the above main object, the in-vehicle power supply device of the present disclosure adopts the following means.

[0007] The first in-vehicle power supply device of the present disclosure is a power storage device, an in-vehicle solar power generation device mounted on a vehicle, a power conditioner that performs charging of the power storage device using the generated power from the in-vehicle solar power generation device, charging of the power storage device using surplus power from an external solar power generation device installed in an external facility, and supply of power from the power storage device to the external facility, and an in-vehicle power supply device comprising a control device that controls the power conditioner, wherein the control device starts warming of the power storage device when the generated power of the in-vehicle solar power generation device reaches a first predetermined power or more, and then controls the power conditioner so that charging of the power storage device using surplus power from the external solar power generation device is performed. It is characterized by this.

[0008] The first in-vehicle power supply device of the present disclosure includes an in-vehicle solar power generation device mounted on a vehicle, charging of a power storage device using the generated power from the in-vehicle solar power generation device, charging of the power storage device using surplus power from an external solar power generation device installed in an external facility, and a power conditioner that supplies power from the power storage device to the external facility, and a control device that controls the power conditioner. The control device starts warming the power storage device when the generated power of the in-vehicle solar power generation device reaches a first predetermined power or more, and then controls the power conditioner so that the power storage device is charged using the surplus power from the external solar power generation device. The first predetermined power is predetermined as a power slightly smaller than the generated power of the in-vehicle solar power generation device, which is assumed to have surplus generated power of the external solar power generation device in the external facility. In this way, warming of the power storage device is started shortly before the generated power of the external solar power generation device becomes surplus in the external facility, and then, when the generated power of the external solar power generation device becomes surplus in the external facility, charging of the power storage device using the surplus power from the external solar power generation device can be performed. Therefore, power loss can be reduced as compared with the case where the power storage device is always warmed. Note that the external facility includes ordinary houses.

[0009] In the first in-vehicle power supply device of the present disclosure, the control device may not warm the power storage device even when the generated power of the in-vehicle solar power generation device reaches a second predetermined power or more when the power storage ratio of the power storage device is equal to or more than a predetermined storage ratio. When the power storage ratio of the power storage device is equal to or more than the predetermined storage ratio, there may be a case where charging of the power storage device using surplus power is not performed even when the generated power from the external solar power generation device becomes surplus in the external facility. Therefore, power loss in this case can be reduced.

[0010] The second in-vehicle power supply device of the present disclosure includes a power storage device and a power conditioner that charges the power storage device using surplus power from a solar power generation device installed in an external facility and supplies power from the power storage device to the external facility, and is an in-vehicle power supply device including a control device that controls the power conditioner. When the generated power of the solar power generation device reaches or exceeds a second predetermined power, the control device starts heating the power storage device, and then controls the power conditioner so that the power storage device is charged using the surplus power from the solar power generation device. It is characterized by this.

[0011] The second in-vehicle power supply device of the present disclosure includes a power storage device, a power conditioner that charges the power storage device using surplus power from a solar power generation device installed in an external facility and supplies power from the power storage device to the external facility, and a control device that controls this power conditioner. The control device starts heating the power storage device when the generated power of the solar power generation device reaches or exceeds a second predetermined power, and then controls the power conditioner so that the power storage device is charged using the surplus power from the solar power generation device. The first predetermined power is predetermined as a power slightly smaller than the power at which the generated power of the solar power generation device becomes surplus in the external facility. In this way, heating of the power storage device can be started slightly before the generated power of the solar power generation device becomes surplus in the external facility, and then, when the generated power of the solar power generation device becomes surplus in the external facility, the power storage device can be charged using the surplus power from the solar power generation device. Therefore, power loss can be reduced compared to the case where the power storage device is always heated. Note that the external facility includes ordinary houses.

[0012] In the second in-vehicle power supply device of the present disclosure, when the power storage ratio of the power storage device is equal to or higher than a predetermined power storage ratio, the control device may not perform heating of the power storage device even when the generated power of the solar power generation device reaches or exceeds the first predetermined power. When the power storage ratio of the power storage device is equal to or higher than the predetermined power storage ratio, charging of the power storage device using surplus power from the solar power generation device may not be performed, so power loss in this case can be reduced.

[0013] The second in-vehicle power supply device of the present disclosure includes a power storage device and an in-vehicle solar power generation device mounted on the vehicle A power conditioner that performs charging of the power storage device using the generated power from the in-vehicle solar power generation device, charging of the power storage device using surplus power from an external solar power generation device installed in an external facility, and supply of power from the power storage device to the external facility, An in-vehicle power supply device comprising a control device that controls the power conditioner, The control device starts warming the power storage device when the generated power of the in-vehicle solar power generation device reaches a second predetermined power or more, and then controls the power conditioner so that charging of the power storage device using surplus power from the external solar power generation device is performed. It is characterized by this.

[0014] The second in-vehicle power supply device of the present disclosure includes an in-vehicle solar power generation device mounted on a vehicle, a power storage device charged using the generated power from the in-vehicle solar power generation device, a power storage device charged using surplus power from an external solar power generation device installed in an external facility, a power conditioner that supplies power from the power storage device to the external facility, and a control device that controls the power conditioner. The control device starts warming the power storage device when the generated power of the in-vehicle solar power generation device reaches a second predetermined power or more, and then controls the power conditioner so that charging of the power storage device using surplus power from the external solar power generation device is performed. The second predetermined power is predetermined as a power slightly smaller than the generated power of the in-vehicle solar power generation device, which is assumed to have surplus generated power of the external solar power generation device in the external facility. By doing so, warming of the power storage device can be started a little before the generated power of the external solar power generation device becomes surplus in the external facility, and then charging of the power storage device using surplus power from the external solar power generation device can be performed when the generated power of the external solar power generation device becomes surplus in the external facility. Therefore, power loss can be reduced compared to the case where the power storage device is always warmed. Note that the external facility includes ordinary houses.

[0015] In the second in-vehicle power supply device of the present disclosure, when the power storage ratio of the power storage device is equal to or higher than a predetermined power storage ratio, even when the generated power of the in-vehicle solar power generation device reaches or exceeds a second predetermined power, the heating of the power storage device may not be performed. When the power storage ratio of the power storage device is equal to or higher than a predetermined power storage ratio, there may be cases where charging of the power storage device using surplus power is not performed even when the generated power from the external solar power generation device becomes surplus at an external facility. Therefore, power loss in this case can be reduced.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0017] Embodiments of the present disclosure will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a power system 10 including a vehicle 20 equipped with a power supply device 30 of the present embodiment and a house 100. As shown in the drawing, the power system 10 includes a vehicle 20, a house 100, and an external power supply 200. The vehicle 20 is configured as a hybrid vehicle and includes a drive unit 22 and a power supply device 30.

[0018] The drive unit 22 includes a motor 23, an inverter 24, and an engine 25. The motor 23 is configured as a synchronous generator motor, capable of generating electricity using the power from the engine 25 and outputting power for driving. The inverter 24 is used to drive the motor 23 and is connected to the power supply device 30 via a power line. Note that instead of the motor 23 and the inverter 24, it may also have a generator capable of generating electricity using the power from the engine 25, a motor capable of outputting power for driving, and two inverters for driving the generator and the motor respectively.

[0019] The power supply device 30 includes a battery 31 as a power storage device, a solar panel 32, a converter 33, a connector 34, a bidirectional charging device 36, and an electronic control unit 40. The battery 31 has a plurality of secondary battery cells configured as lithium-ion secondary batteries or nickel-metal hydride secondary batteries. The solar panel 32 has a plurality of solar cells and is fixed to the upper surface of the roof portion of the vehicle body, the upper surface of the bonnet, etc. The converter 33 supplies the power generated by the solar panel 32 to the battery 31 with voltage conversion.

[0020] The connector 34 can be connected to the power supply device 130 of the house 100 via a relay cable 150. The bidirectional charging device 36 connects the connector 152 of the relay cable 150 and the connector 34, and when the connector 154 of the relay cable 150 and the connector 134 on the house 100 side are connected, it can supply the power from the power supply device 130 of the house 100 to the battery 31 or supply the power from the battery 31 to the power supply device 130 of the house 100.

[0021] The electronic control unit 40 has a microcomputer, and the microcomputer has a CPU, a ROM, a RAM, a flash memory, an input / output port, and a communication port. The electronic control unit 40 inputs signals from various sensors via the input port. Examples of the signals input by the electronic control unit 40 include the voltage Vb and current Ib of the battery 31, the voltage Vs1 and current Is1 on the solar panel 32 side of the converter 33, and the voltage Vs2 and current Is2 on the battery 31 side of the converter 33. The electronic control unit 40 outputs various control signals via the output port. Examples of the signals output by the electronic control unit 40 include a control signal to the converter 33. The electronic control unit 40 calculates the state of charge SOC of the battery 31 based on the integrated value of the current Ib of the battery 31, and calculates the power generation power Ps of the solar panel 32 based on the voltage Vs1 and current Is1 on the solar panel 32 side of the converter 33. When the power supply device 30 and the power supply device 130 of the house 100 are connected by the relay cable 150, the electronic control unit 40 communicates with the electronic control unit 140 provided in the power supply device 130 of the house 100. Since the electronic control unit 40 also functions as a control device for the drive unit 22, it inputs signals necessary for driving the drive unit 22 via the input port, calculates the drive torque to be output by the drive unit 22, and outputs a drive control signal to the drive unit 22 via the output port so that the calculated drive torque is output from the drive unit 22.

[0022] The power supply device 130 of the house 100 includes a battery 131, a solar panel 132, a converter 133, a power conversion device 136, and an electronic control unit 140. The battery 131 has a plurality of secondary battery cells configured as lithium-ion secondary batteries or nickel-metal hydride secondary batteries. The solar panel 132 has a plurality of solar cells and is fixed on the roof of the house 100. The converter 133 supplies the power generated by the solar panel 132 to the battery 131 with voltage conversion. The power conversion device 136, the bidirectional charging device 36, connects the connector 152 of the relay cable 150 and the connector 34, and when the connector 154 of the relay cable 150 and the connector 134 on the house 100 side are connected, it can supply the power from the power supply device 130 of the house 100 to the battery 31 or supply the power from the battery 31 to the power supply device 130 of the house 100. Further, the power conversion device 136 is connected to the external power supply 200 and can receive power supply from the external power supply 200 or supply power to the external power supply 200.

[0023] The electronic control unit 140 has a microcomputer, and the microcomputer has a CPU, a ROM, a RAM, a flash memory, an input / output port, and a communication port. The electronic control unit 140 inputs signals from various sensors via the input port. Examples of the signals input by the electronic control unit 140 include the voltage Vh and current Ih of the battery 131, the voltage Vh1 and current Ih1 on the solar panel 132 side of the converter 133, and the voltage Vh2 and current Ih2 on the battery 131 side of the converter 133. The electronic control unit 140 outputs various control signals via the output port. Examples of the signals output by the electronic control unit 140 include control signals to the converter 133. The electronic control unit 140 calculates the state of charge SOC of the battery 131 based on the integrated value of the current Ih of the battery 131, or calculates the generated power Ph of the solar panel 132 based on the voltage Vh1 and current Ih1 on the solar panel 132 side of the converter 133.

[0024] Next, the operation of the power supply device 30 of the present embodiment will be described, particularly the operation of heating the battery 31 when charging the in-vehicle battery 31 with surplus power on the house 100 side of the generated power from the solar panel 132 of the house 100 in a state where the power supply device 30 of the vehicle 20 and the power supply device 130 of the house 100 are connected via the relay cable 150. FIG. 2 is a flowchart showing an example of the battery heating process executed by the electronic control unit 40.

[0025] When the battery heating process is executed, the electronic control unit 40 waits for the start of V2H (Vehicle to Home) (step S100). The start of V2H is determined when the connector 152 of the relay cable 150 and the connector 34 are connected and the connector 154 of the relay cable 150 and the connector 134 on the house 100 side are connected so that power can be supplied from the power supply device 130 of the house 100 to the battery 31 or power can be supplied from the battery 31 to the power supply device 130 of the house 100. Note that V2H means a system that can supply power from the power supply device 130 of the house 100 to the battery 31 or supply power from the battery 31 to the power supply device 130 of the house 100.

[0026] When it is determined in step S100 that V2H has started, the generated power Ps from the in-vehicle solar panel 32 is acquired (step S110), and it is determined whether the acquired generated power Ps has reached a threshold value Pref1 or more (step S120). As the threshold value Pref1, a value slightly smaller than the generated power Ps of the in-vehicle solar panel 32, which is assumed to result in surplus power of the generated power Ph of the solar panel 132 in the house 100, can be used in advance. That is, when the generated power Ps of the in-vehicle solar panel 32 reaches the threshold value Pref1 or more, it is predicted that surplus power will soon occur in the generated power Ph of the solar panel 132 in the house 100.

[0027] When it is determined in step S120 that the generated power Ps from the solar panel 32 has reached or exceeded the threshold value Pref1, it is determined whether the state of charge SOC of the battery 31 is less than the threshold value Sref (step S130). As the threshold value Sref, a state of charge SOC at which it is determined that charging of the battery 31 is unnecessary can be used. When it is determined in step S130 that the state of charge SOC of the battery 31 is less than the threshold value Sref, heating of the battery 31 is started (step S140). The heating of the battery 31 is, for example, heating by a heating device such as a heater when a heating device is provided, and when no heating device is provided, heating of the battery 31 is included by repeating charging and discharging of the battery 31 within a short period of time. After the heating of the battery 31 is started, if surplus power is generated in the generated power Ph from the solar panel 132 in the house 100, charging of the battery 31 is started by the surplus power of the generated power Ps from the solar panel 132.

[0028] Subsequently, it is determined whether the heating end condition of the battery 31 is satisfied (step S150). Examples of the heating end condition of the battery 31 include a condition where the temperature Tb of the battery 31 has reached a temperature at which heating is unnecessary, a condition where the battery 31 is fully charged, and a condition where no surplus power is generated in the generated power Ps from the solar panel 32. When it is determined that the heating end condition of the battery 31 is satisfied, the heating of the battery 31 is terminated (step S160). Then, it is determined whether V2H has been stopped (step S170). When it is determined that V2H has not been stopped, the process returns to the process of obtaining the generated power Ps from the in-vehicle solar panel 32 in step S110. On the other hand, when it is determined that V2H has been stopped, this process is terminated.

[0029] When it is determined in step S150 that the temperature rise end condition of the battery 31 is not satisfied, without ending the temperature rise of the battery 31, it is determined whether V2H has stopped (step S170). When it is determined that V2H has not stopped, the process returns to the process of obtaining the generated power Ps from the in-vehicle solar panel 32 in step S110. When it is determined that V2H has stopped, this process ends.

[0030] Note that when it is determined in step S120 that the generated power Ps from the solar panel 32 is less than the threshold value Pref1, or when it is determined in step S130 that the state of charge SOC of the battery 31 is equal to or higher than the threshold value Sref, the processes after step S150 are performed without starting the temperature rise of the battery 31.

[0031] FIG. 3 is an explanatory diagram showing an example of the time changes in the generated power Ps from the in-vehicle solar panel 32, the temperature rise state of the battery 31, the temperature Tb of the battery 31, and the charging and power supply of the battery 31 in V2H. When the generated power Ps from the in-vehicle solar panel 32 reaches the threshold value Pref1 or higher at time T1, the temperature rise of the battery 31 is started, and then the temperature Tb of the battery 31 rises. When the generated power Ps from the in-vehicle solar panel 32 reaches the threshold value Pchg or higher at time T2 and surplus power is generated in the generated power Ph from the solar panel 132 in the house 100, charging of the in-vehicle battery 31 using the surplus power in the generated power Ph from the solar panel 132 is started. When the temperature rise end condition of the battery 31 is satisfied at time T3, the temperature rise of the battery 31 ends. Thereafter, when there is no surplus power in the generated power Ph from the solar panel 132 in the house 100 at time T4, the charging of the in-vehicle battery 31 using the surplus power in the generated power Ph from the solar panel 132 ends.

[0032] In the power supply device 30 mounted on the vehicle 20 of the embodiment described above, when the generated power Ps from the in-vehicle solar panel 32 reaches a threshold value Pref1 or higher, it is predicted that the generated power Ph of the solar panel 132 in the house 100 will soon become surplus, and the temperature rise of the battery 31 is started. After that, the battery 31 is charged using the surplus power of the generated power Ph from the solar panel 32 in the house 100. Therefore, it is possible to reduce the power loss as compared with the case where the temperature of the battery 31 is always raised since the start of V2H. Moreover, when the state of charge SOC of the battery 31 is equal to or higher than the threshold value Sref, it is determined that the charging of the battery 31 by the surplus power of the generated power Ps from the solar panel 32 is often not performed, and the temperature rise of the battery 31 is not started, so that the power loss can be further reduced.

[0033] In the power supply device 30 mounted on the vehicle 20 of the embodiment, when the generated power Ps from the in-vehicle solar panel 32 reaches a threshold value Pref1 or more, it is predicted that the generated power Ph of the solar panel 132 in the house 100 will soon become surplus, and the temperature rise of the battery 31 is started. However, when the generated power Ph from the solar panel 132 of the house 100 reaches a threshold value Pref2 or more, it may be assumed that the generated power Ph of the solar panel 132 in the house 100 will soon become surplus, and the temperature rise of the battery 31 is started. An example of the battery temperature rise process in this case is shown in FIG. 4. The battery temperature rise process in FIG. 4 is the same as the battery temperature rise process in FIG. 2, except that the process of obtaining the generated power Ps from the in-vehicle solar panel 32 in steps S110 and S120 of the battery temperature rise process in FIG. 2 and comparing it with the threshold value Pref1 is changed to the process of obtaining the generated power Ph of the solar panel 132 of the house 100 and comparing it with the threshold value Pref2. In the battery temperature rise process of FIG. 4, the generated power Ph of the solar panel 132 of the house 100 is obtained (step S110B), and it is determined whether or not the obtained generated power Ph of the solar panel 132 of the house 100 is equal to or more than the threshold value Pref2 (step S120B). When it is determined that the generated power Ph is equal to or more than the threshold value Pref2 and the state of charge SOC of the battery 31 is less than the threshold value Sref (step S130), the temperature rise of the battery 31 is started (step S140). Here, as the threshold value Pref2, a value slightly smaller than the generated power Ph assumed to be surplus of the generated power Ph of the solar panel 132 in the house 100 can be used in advance. That is, it is predicted that surplus power will soon occur in the generated power Ph of the solar panel 132 in the house 100. Even when the battery temperature rise process of FIG. 4 is executed, the same effects as those of the power supply device 30 of the embodiment that executes the battery temperature rise process of FIG. 2 can be obtained. When the battery temperature rise process of FIG. 4 is executed, the power supply device 30 may not include the solar panel 32.

[0034] In the power supply device 30 mounted on the vehicle 20 of the embodiment, even when the generated power Ps from the mounted solar panel 32 reaches or exceeds the threshold value Pref1, when the power storage ratio SOC of the battery 31 is equal to or higher than the threshold value Sref, the temperature rise of the battery 31 is not started. However, even when the power storage ratio SOC of the battery 31 is equal to or higher than the threshold value Sref, the temperature rise of the battery 31 may be started.

[0035] In the above-described embodiment, the vehicle 20 is configured to include the drive unit 22 having the motor 23 and the engine 25, and the power supply device 30. However, the present invention is not limited to this. For example, the drive unit 22 may not have the engine 25.

[0036] The correspondence between the main elements of the embodiment and the main elements of the invention described in the section of means for solving the problems will be described. In the embodiment, the battery 31 corresponds to the "power storage device", the solar panel 32 corresponds to the "in-vehicle solar power generation device", the house 100 corresponds to the "external facility", the solar panel 132 corresponds to the "external solar power generation device", the bidirectional charging device 36 corresponds to the "power conditioner", the electronic control unit 40 corresponds to the "control device", and the power supply device 30 corresponds to the "in-vehicle power supply device".

[0037] Note that the correspondence between the main elements of the embodiment and the main elements of the invention described in the section of means for solving the problems is an example for specifically explaining the form for implementing the invention described in the section of means for solving the problems in the embodiment, and does not limit the elements of the invention described in the section of means for solving the problems. That is, the interpretation of the invention described in the section of means for solving the problems should be made based on the description in that section, and the embodiment is merely a specific example of the invention described in the section of means for solving the problems. Since the above is an example for specifically explaining the form for implementing the invention described in the section of means for solving the problems in the embodiment, the elements of the invention described in the section of means for solving the problems are not limited. That is, the interpretation of the invention described in the section of means for solving the problems should be made based on the description in that section, and the embodiment is merely a specific example of the invention described in the section of means for solving the problems.

[0038] As described above, the embodiments for implementing the present disclosure have been described. However, the present disclosure is not limited to such embodiments, and it goes without saying that the present disclosure can be implemented in various forms without departing from the gist of the present disclosure.

Industrial Applicability

[0039] The present disclosure can be used in the manufacturing industry of vehicle management devices and the like.

Explanation of Signs

[0040] 10 Power system, 20 Vehicle, 22 Drive unit, 23 Motor, 24 Inverter, 30 Power supply device, 31 Battery, 32 Solar panel, 33 Converter, 34 Connector, 36 Bidirectional charging device, 40 Electronic control unit, 100 House, 130 Power supply device, 131 Battery, 132 Solar panel, 133 Converter, 134 Connector, 136 Power conversion device, 140 Electronic control unit, 150 Relay cable, 152, 154 Connector, 200 External power supply.

Claims

1. A power storage device, An in-vehicle solar power generation device mounted on a vehicle, Charging the power storage device using the generated power from the in-vehicle solar power generation device, charging the power storage device using surplus power from an external solar power generation device installed in an external facility, and supplying power from the power storage device to the external facility, a power conditioner for performing the above, An in-vehicle power supply device comprising a control device for controlling the power conditioner, The control device starts heating the power storage device when the generated power of the in-vehicle solar power generation device reaches a first predetermined power or more, and then controls the power conditioner so that the power storage device is charged using the surplus power from the external solar power generation device. An in-vehicle power supply device characterized by the above.

2. The in-vehicle power supply device according to Claim 1, When the power storage ratio of the power storage device is equal to or higher than a predetermined power storage ratio, the control device does not heat the power storage device even when the generated power of the in-vehicle solar power generation device reaches a second predetermined power or more. An in-vehicle power supply device.

3. A power storage device, A power conditioner for charging the power storage device using surplus power from a solar power generation device installed in an external facility and supplying power from the power storage device to the external facility, An in-vehicle power supply device comprising a control device for controlling the power conditioner, The control device starts heating the power storage device when the generated power of the solar power generation device reaches a second predetermined power or more, and then controls the power conditioner so that the power storage device is charged using the surplus power from the solar power generation device. An in-vehicle power supply device characterized by the above.

4. The in-vehicle power supply device according to Claim 3, When the power storage ratio of the power storage device is equal to or higher than a predetermined power storage ratio, the control device does not heat the power storage device even when the generated power of the solar power generation device reaches a first predetermined power or more. An in-vehicle power supply device.

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