JP2002218665A - Power supply adapter and charger for electric tool power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply adapter and a charger for a power tool, which enable use of the electric tool even though only compressed air is supplied as a power energy source. SOLUTION: In the power supply adapter 20, electricity is generated by using compressed air as an energy source in a power generating part 22. A specified voltage or specified current is outputted from the electric energy by a voltage/current control 23. The electric energy outputted from the voltage/ current control 23 is accumulated in a battery 24. A direct current power taken out from the battery 24 by a plus terminal ta and a minus terminal tb is supplied to an electric tool ET. By so doing, electric energy in the battery 24 for which compressed air is employed as an energy source can be supplied to the electric tool ET, thereby enabling use of the electric tool ET even though only compressed air is supplied as a power energy source.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power adapter for a power tool for supplying power to a power tool and a charging device for charging a battery used in the power tool.

[0002]

[Technical background] At work sites such as inside factories and outdoors,
In some cases, air pressurized by an air compressor is used as an energy source of a power tool. In such a work site, generally, even when pressurized air is supplied, a so-called commercial power supply is often not satisfactorily supplied.
On the other hand, recently, a DC power tool using a battery pack as a power supply source is often used even in such a work site due to its good workability.

[0003]

However, such a DC power tool is driven by the electric power from the battery pack as an energy source. Therefore, when the electric energy of the battery pack is exhausted, the used battery pack is removed. It will need to be replaced with a charged one. That is, when working for a long time, there is a problem that a large number of charged battery packs must be prepared in advance or used battery packs must be charged as needed.

Further, when charging a used battery pack, the charging device charges the battery pack with electric power obtained from a commercial power supply. , The charging device cannot be operated. Even when power is obtained from a generator at an outdoor work site, the power obtained from the generator may destroy the charging device, and the charging device cannot be used. As a result, the battery pack reciprocates between the work site and the charging device due to the provision of the charging device in a place where commercial power is supplied away from the work site. There is a problem that work occurs. If the management of the battery packs is erroneous, all the battery packs become empty, the tool cannot be operated, and the operation itself cannot be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a power tool even when only pressurized air is supplied as a power energy source. It is an object of the present invention to provide a power adapter and a charging device for a power tool which enable use of a power tool.

[0006]

According to a first aspect of the present invention, there is provided a power adapter for a power tool for supplying power to a power tool, the power adapter comprising: A power generation unit that generates electric power, a voltage / current control unit that can output a predetermined voltage or a predetermined current from the electric energy obtained by the power generation unit, a power storage unit that stores the electric energy output from the voltage / current control unit, and the power storage unit. And a connection terminal capable of supplying DC power extracted from the section to the power tool.

According to a second aspect of the present invention, there is provided a power supply adapter for a power tool according to the first aspect, further comprising: a voltage detection unit that detects an amount of electric energy stored in the power storage unit and outputs power storage information;
When the power storage unit is in a fully charged state based on the input power storage information, a control unit that stops supplying the pressurized air supplied to the power generation unit is provided as a technical feature.

According to a third aspect of the present invention, there is provided a charging device for charging a battery used in a power tool, wherein the power generating unit generates power using pressurized air as an energy source; A voltage / current control unit capable of outputting a predetermined voltage or a predetermined current from electric energy obtained by the unit; and a connection terminal capable of supplying DC power output from the voltage / current control unit to the battery. Features.

Further, in the charging device according to the fourth aspect,
In, a temperature detection unit that outputs temperature information obtained from a temperature detection element capable of detecting a cell temperature of the battery, and when the battery is in a fully charged state based on the input temperature information, the power generation unit A control unit for stopping the supply of the pressurized air to be supplied.

According to the first aspect of the present invention, the power generation unit generates power using the pressurized air as an energy source, and the voltage / current control unit outputs a predetermined voltage or a predetermined current from the electric energy.
The power storage unit stores the electric energy output from the voltage / current control unit, and the connection terminal supplies DC power extracted from the power storage unit to the power tool. Thus, the pressurized air can be used as an energy source, and the electric energy stored in the power storage unit can be supplied to the power tool as DC power.

According to the second aspect of the present invention, the voltage detecting section detects the amount of electric energy stored in the power storage section and outputs power storage information. The control section outputs the power generation section when the power storage section is fully charged based on the power storage information. The supply of pressurized air to be supplied to is stopped. Accordingly, when the power storage unit is in the fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed.

According to the third aspect of the present invention, the power generation unit generates power using the pressurized air as an energy source, and the voltage / current control unit outputs a predetermined voltage or a predetermined current from the electric energy.
The DC power output from the voltage / current control unit is supplied to the battery by the connection terminal. Thus, the DC power output from the voltage / current control unit using the compressed air as an energy source can be supplied to the battery used in the power tool.

According to the fourth aspect of the present invention, the temperature information obtained from the temperature detecting element capable of detecting the cell temperature of the battery is output by the temperature detecting section, and the battery is fully charged based on the temperature information by the control section. Stops the supply of pressurized air to be supplied to the power generation unit. Thus, when the battery is in a fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a power adapter and a charging device for a power tool according to the present invention will be described below with reference to the drawings. [Power Adapter for Power Tool] First, the configuration and operation of a power adapter for power tool (hereinafter, referred to as “power adapter”) 20 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a block diagram showing the configuration of the power adapter 20. FIG.
4 is a flowchart showing a flow of processing by the control unit 26 of FIG.

As shown in FIG. 1, the power adapter 20
Mainly, jack J, ventilation path 21, power generation unit 22, voltage / current control unit 23, power storage unit 24, voltage detection unit 25, control unit 2
6, comprising a solenoid valve 27, a positive terminal ta, a negative terminal tb, and the like. The pressurized air taken in from the jack J is used as an energy source, and the electric energy stored in the power storage unit 24 is supplied to the electric tool ET as DC power. What you get. The power tool ET is a power tool having a built-in DC motor M, such as a battery drill, and has a switch SW.
Is turned on, DC power is supplied to the DC motor M, and the rotor of the DC motor M rotates in a predetermined direction. The main body of the electric tool ET is provided with a plus terminal ta ′ connected to the plus electrode of the DC motor M via a switch SW or the like, and a minus terminal tb ′ similarly connected to the minus electrode of the DC motor M. ing.

The jack J of the power adapter 20 is configured to be connectable to an air tube of an air compressor (not shown). This allows air pressurized by the air compressor, that is, pressurized air, to be introduced into the ventilation passage 21 of the power adapter 20 via the air tube.

The ventilation passage 21 is a passage for guiding the pressurized air taken in from the jack J to the power generation unit 22, and an electromagnetic valve 27 is provided in the middle of the passage. The solenoid valve 27 communicates and shuts off the ventilation passage 21 with a control signal from a control unit 26 described later.

The power generation unit 22 includes a fan 22a that can be rotated by wind power generated by pressurized air.
The armature attached to the shaft is rotated in the field by the rotation of a. Accordingly, the armature and the field can relatively move, so that it is possible to extract AC power from the armature as electric energy, that is, generate power. Further, by adopting a configuration in which a brush is provided on the stator (field) side and a commutator is provided on the rotor (armature) side, DC power can be obtained as electric energy. The electric energy generated by the power generation unit 22 is output to the voltage / current control unit 23.

The voltage / current controller 23 comprises a rectifier circuit, a constant voltage circuit, a constant current circuit, and the like. That is, AC power (voltage and current) as electric energy obtained by the power generation unit 22 is converted into DC voltage and current by a rectification circuit, and a predetermined voltage or a predetermined current is stored by a constant voltage circuit or a constant current circuit. It is configured to be able to output to The voltage / current control unit 23 is connected to the control unit 26 so that a control signal from the control unit 26 can be input.
Therefore, the voltage setting value of the constant voltage circuit or the current setting value of the constant current circuit is configured to be appropriately changeable by the control unit 26.

The power storage unit 24 is composed of a capacitor having a relatively large capacitance, such as an electric double layer capacitor. That is, the plus side output of the voltage / current control unit 23 is connected to the plus side electrode of the power storage unit 24, and the minus side output is connected to the minus side electrode of the power storage unit 24, whereby the electric energy output from the voltage / current control unit 23 is connected. Is configured to be able to store DC power. The power storage unit 24 is not limited to a capacitor, but may be configured by a rechargeable so-called secondary battery. This makes it possible to store more electric energy in the same volume than the capacitor.

The positive terminal ta is connected to the positive electrode of the power storage unit 24 and is connectable to the positive terminal ta 'of the electric tool ET. Similarly, the negative terminal tb is connected to the power storage unit 24 and is configured to be connectable to the negative terminal tb ′ of the electric tool ET. Thus, the DC power extracted from the power storage unit 24 can be supplied to the electric tool ET.

The voltage detection unit 25 is configured to detect the amount of electric energy stored in the power storage unit 24 and output power storage information to the control unit 26. For example, the voltage detection unit 25 is configured by a comparator that can determine whether the terminal voltage of the power storage unit 24 exceeds a predetermined reference voltage. This predetermined reference voltage is set to a voltage value when power storage unit 24 is fully charged. By configuring the voltage detection unit 25 in this way, when the power storage unit 24 is fully charged, the control unit 26 can be notified of the power storage information to that effect.

Also, a plurality of such comparators (for example, four) are provided, and the respective reference voltages are set to "low voltage
A configuration such as "medium pressure / high pressure / full charge" may be set in stages. As a result, the storage unit 2 stores the power storage information corresponding to each of the charging states of “low voltage / medium pressure / high pressure / full charge”.
6 can be notified to the control unit 26 of detailed power storage information.

The control unit 26 controls the supply of pressurized air to be supplied to the power generation unit 22 when the power storage unit 24 is fully charged based on the power storage information input from the voltage detection unit 25. For example, it is configured by a one-chip microcomputer (hereinafter, referred to as “microcomputer”) having a built-in CPU, memories such as ROM and RAM, various registers, an input / output interface, and the like.

The input interface of the microcomputer is connected to a voltage detection unit 25, and the output interface is connected to a voltage / current control unit 23 and a solenoid valve 27. Thus, as will be described later, it is possible to control the opening and closing of the solenoid valve 27 and to change the set values of the voltage and current by the voltage / current control unit 23. It can be performed.

The solenoid valve 27 is configured so as to be able to freely open and close the flow path by a control signal given from the control unit 26, and is provided in the middle of the ventilation path 21 as described above. . That is, since the communication of the ventilation path 21 can be freely connected and cut off by the control signal output from the microcomputer of the control unit 26, the communication state of the ventilation path 21 is controlled in accordance with the power storage state of the power storage unit 24. Can be.

By configuring the power supply adapter 20 as described above, the power generation unit 22 generates power using pressurized air as an energy source, the voltage / current control unit 23 outputs a predetermined voltage or a predetermined current from electric energy, and the power storage unit. 24
Thus, the electric energy output from the voltage / current control unit 23 can be stored, and the DC power extracted from the power storage unit 24 can be supplied to the electric tool ET via the plus terminal ta and the minus terminal tb. In addition, the voltage storage unit 24
Detects the amount of electric energy stored by
Based on this power storage information, when the power storage unit 24 is fully charged, the control unit 26 can perform appropriate power generation control so as to stop supplying the pressurized air supplied to the power generation unit 26.

Next, the flow of the power generation control processing by the control unit 26 will be described with reference to the flowchart shown in FIG.
The control unit 26 performs the following power generation control processing by the CPU executing predetermined arithmetic processing and the like by a control program written in a ROM built in the microcomputer. This power supply control process is repeatedly performed at predetermined time intervals, and is started by, for example, a timer interrupt.

As shown in FIG. 2, when the storage information is obtained from the voltage detecting unit 25 in step S10, the process proceeds to step S10.
The power storage unit 24 determines from the power storage information whether or not the power storage unit 24 is fully charged. If it is determined in step S12 that power storage unit 24 is in the fully charged state, the process proceeds to step S14, and a valve closing signal is sent to solenoid valve 27. Thereby, when the solenoid valve 27 is closed, the ventilation path 2
Since the communication of 1 is cut off, the supply of pressurized air from the air tube connected to the jack J to the power generation unit 22 is stopped, and the power generation by the power generation unit 22 is stopped. Therefore, when the power storage unit 24 is in a fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed.

On the other hand, in step S12, power storage unit 24
Is not in a fully charged state, the process proceeds to step S16, and a valve opening signal is sent to the solenoid valve 27. Thus, when the solenoid valve 27 is opened, the ventilation passage 21 is communicated, so that pressurized air is supplied to the power generation unit 22 from the air tube connected to the jack J. Therefore, the power generation by the power generation unit 22 is started, and when the pressurized air has already been supplied, the power generation is continuously performed.

In the next step S18, a process for transmitting a predetermined control signal to the voltage / current control unit 23 is performed, and a series of power supply control processes is completed. That is, the process of changing the set values of the voltage and current according to the state of power storage of power storage unit 24 determined in step S12 is performed in this step. Thus, appropriate power generation control according to the state of power storage of the power storage unit 24 is performed.

As described above, according to the power adapter 20 according to the present embodiment, the power generation unit 22 generates power using pressurized air as an energy source, and the voltage / current control unit 23 outputs a predetermined voltage or a predetermined current from electric energy. And
The electric energy output from the voltage / current control unit 23 is stored by the power storage unit 24, and the plus terminal ta and the minus terminal t
b, the DC power extracted from the power storage unit 24
Supply to ET. Thereby, the electric energy stored in the power storage unit 24 can be supplied to the electric tool ET as DC power using the pressurized air as an energy source. Therefore,
Even when only pressurized air is supplied as a power energy source, there is an effect that the power tool ET can be used.

The power adapter 20 according to the present embodiment
According to the above, the voltage detection unit 25 detects the amount of electric energy stored in the power storage unit 24 and outputs power storage information.
When the power storage unit 24 is fully charged based on the power storage information, the supply of the pressurized air to be supplied to the power generation unit 22 is stopped. Thus, when the power storage unit 24 is in a fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed. Therefore, there is also an effect that the pressurized air supplied as a power energy source is efficiently used, and the power tool ET can be used.

[Charging Apparatus] Next, the configuration and operation of the charging apparatus 30 according to this embodiment will be described with reference to FIGS. Here, FIG. 3 shows the charging device 3 according to the present embodiment.
FIG. 4 is a flowchart showing a flow of processing by the control unit 36 of the charging device 30.

As shown in FIG. 3, the charging device 30 mainly includes a jack J, a ventilation path 21, a power generation unit 22, a voltage / current control unit 23, a temperature detection unit 35, a control unit 36, a solenoid valve 27,
It is composed of a plus terminal ta, a minus terminal tb, a sensor terminal tc, and the like. The compressed air taken in from the jack J is used as an energy source, and the electric energy output from the voltage / current control unit 23 is supplied to the battery BP as DC power. What you get.

The charging device 30 has a configuration similar to that of the power supply adapter 20 described above, and in some cases includes the same components. Therefore, such components, ie, the jack J, the ventilation passage 21, and the power generation unit 22, voltage / current control unit 23
Are denoted by the same reference numerals in FIG. 3 and their description is omitted. Hereinafter, the components of the charging device 30 different from the power adapter 20 and the configuration of the battery pack BP will be described.

First, the configuration of the battery pack BP charged by the charging device 30 will be described with reference to FIG. Battery pack
BP is a plurality of (n) cells CL1 to CLn (for example, nickel-metal hydride batteries) electrically connected in series to a resin casing (not shown), and a temperature at which the temperatures of the cells CL1 to CLn can be detected. And a sensor TM. The casing of the battery pack BP has cells CL1 to CL
n plus terminal ta 'connected to the plus electrode, cell CL
Negative terminal t connected to negative electrodes 1 to CLn
b ′ and a sensor terminal tc ′ connected to one electrode of the temperature sensor TM are provided. The other terminal of the temperature sensor TM is connected to a minus terminal tb 'connected to minus electrodes of the cells CL1 to CLn.

Next, the configuration of the temperature detector 35 of the charging device 30 will be described. The temperature detector 35 is a cell of the battery pack BP.
It is configured so that temperature information from a temperature sensor TM that detects the temperatures of CL1 to CLn can be output to the control unit 36. For example, when the temperature sensor TM is configured by a thermistor whose electric resistance changes according to the ambient temperature, the temperature detection unit 35 includes a bridge circuit or the like including the temperature sensor TM, a comparator or an A / D converter. / D converter. As a result, the temperature information can be output to the control unit 36, so that the cells CL1 to CLn of the battery pack BP can be output.
Can be notified to the controller 26 of the temperature of the cells CL1 to CLn.

When the battery pack BP is in a fully charged state based on the temperature information input from the temperature detecting unit 35, the control unit 36 controls to stop supplying the pressurized air supplied to the power generating unit 22. So, for example, CPU, ROM, RA
It is configured by a microcomputer having a memory such as M, various registers, an input / output interface, and the like.

The input interface of this microcomputer is connected to the temperature detecting section 35, and the output interface is connected to the voltage / current control section 23 and the solenoid valve 27. Thereby, since the opening / closing valve control of the electromagnetic valve 27 and the set values of the voltage and current by the voltage / current control unit 23 can be changed, appropriate power generation control according to the state of charge of the battery pack BP can be performed. it can.

Next, the flow of the power generation control process by the control unit 36 will be described with reference to the flowchart shown in FIG.
The control unit 36 performs a power generation control process described below when the CPU executes a predetermined arithmetic process or the like by a control program written in a ROM built in the microcomputer. This power supply control process is repeatedly performed at predetermined time intervals, and is started by, for example, a timer interrupt.

As shown in FIG. 4, when temperature information is obtained from the temperature detector 35 in step S30, the process proceeds to step S30.
At 32, it is determined from the temperature information whether the battery pack BP is in a fully charged state. When it is determined in step S32 that the battery pack BP is in the fully charged state, the process proceeds to step S34, and a valve closing signal is sent to the solenoid valve 27. Thereby, when the solenoid valve 27 is closed, the communication of the ventilation passage 21 is cut off, so that the supply of pressurized air from the air tube connected to the jack J to the power generation unit 22 is stopped, and the power generation unit 22 generates power. Stops. Therefore,
When the battery pack BP is in a fully charged state, excess pressurized air is not supplied, so that waste of pressurized air can be suppressed.

On the other hand, in step S32, the battery pack
If it is determined that the BP is not in the fully charged state, the process shifts to step S36 to send a valve opening signal to the solenoid valve 27. Thus, when the solenoid valve 27 is opened, the ventilation passage 21 is communicated, so that pressurized air is supplied to the power generation unit 22 from the air tube connected to the jack J. Therefore, the power generation by the power generation unit 22 is started, and when the pressurized air has already been supplied, the power generation is continuously performed.

In the next step S38, a process of transmitting a predetermined control signal to the voltage / current control unit 23 is performed, and a series of power supply control processes is completed. That is, the process of changing the set values of the voltage and current according to the state of charge of the battery pack BP determined in step S32 is performed in this step. Thereby, appropriate power generation control according to the state of charge of the battery pack BP is performed.

As described above, according to the charging device 30 of the present embodiment, the power generation unit 22 generates power using the pressurized air as an energy source, and the voltage / current control unit 23 outputs a predetermined voltage or a predetermined current from electric energy. The voltage / current controller 2 is connected to the plus terminal ta and the minus terminal tb.
3 is supplied to the battery pack BP.
Thus, the DC power output from the voltage / current control unit 23 using the compressed air as an energy source can be supplied to the battery pack BP used for the power tool. Therefore, even when only pressurized air is supplied as the power energy source, there is an effect that the power tool can be used.

Further, according to the charging device 30 of the present embodiment, the temperature detector 35 detects the cells CL1 to CL1 of the battery pack BP.
The temperature information obtained from the temperature sensor TM capable of detecting the temperature of CLn is output, and when the battery pack BP is in a fully charged state based on the temperature information by the control unit 36, the supply of pressurized air to be supplied to the power generation unit 22 To stop. As a result, the battery pack BP
When the battery is in a fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed. Therefore, in addition to the effects described above, there is also an effect that enables appropriate power generation control according to the state of charge of the battery pack BP.

[0047]

According to the first aspect of the present invention, the power generation unit generates power using pressurized air as an energy source, the voltage / current control unit outputs a predetermined voltage or a predetermined current from the electric energy, and the power storage unit outputs the voltage / current control unit. The output electric energy is stored, and DC power extracted from the power storage unit is supplied to the power tool through the connection terminal. Thus, the pressurized air can be used as an energy source, and the electric energy stored in the power storage unit can be supplied to the power tool as DC power. Therefore, even when only pressurized air is supplied as the power energy source, there is an effect that the power tool can be used.

According to the second aspect of the present invention, the voltage detecting section detects the amount of electric energy stored in the power storage section and outputs power storage information. The control section outputs the power generation section when the power storage section is fully charged based on the power storage information. The supply of pressurized air to be supplied to is stopped. Accordingly, when the power storage unit is in the fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed. Therefore, in addition to the effects described above, there is also an effect that enables appropriate power generation control according to the state of power storage of the power storage unit.

According to the third aspect of the present invention, the power generation unit generates power using the pressurized air as an energy source, and the voltage / current control unit outputs a predetermined voltage or a predetermined current from the electric energy.
The DC power output from the voltage / current control unit is supplied to the battery by the connection terminal. Thus, the DC power output from the voltage / current control unit using the compressed air as an energy source can be supplied to the battery used in the power tool. Therefore, even when only pressurized air is supplied as the power energy source, there is an effect that the power tool can be used.

According to the fourth aspect of the present invention, the temperature information obtained from the temperature detecting element capable of detecting the cell temperature of the battery is output by the temperature detecting section, and the battery is fully charged based on the temperature information by the control section. Stops the supply of pressurized air to be supplied to the power generation unit. Thus, when the battery is in a fully charged state, excessive supply of pressurized air is not performed, so that waste of pressurized air can be suppressed. Therefore, in addition to the effects described above, there is also an effect that enables appropriate power generation control according to the state of charge of the battery.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a power adapter for a power tool according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a flow of a process performed by a control unit of the power adapter for a power tool according to the embodiment.

FIG. 3 is a block diagram illustrating a configuration of a charging device according to an embodiment of the present invention.

FIG. 4 is a flowchart illustrating a flow of a process performed by a control unit of the charging device according to the embodiment.

[Explanation of symbols]

 Reference Signs List 20 power tool power adapter 22 power generation unit 23 voltage / current control unit 24 power storage unit 25 voltage detection unit 26, 36 control unit 27 solenoid valve 30 charging device 35 temperature detection unit ta plus terminal (connection terminal) tb minus terminal (connection terminal) tc sensor terminal CL1, CLn cell ET power tool BP battery pack (battery) TM temperature sensor (temperature detection element)

Claims (4)

[Claims] 1. A power adapter for a power tool for supplying power to a power tool, comprising: a power generation unit configured to generate power using pressurized air as an energy source; and a predetermined voltage or a predetermined current from electric energy obtained by the power generation unit. A voltage / current control unit capable of outputting, a power storage unit for storing electric energy output from the voltage / current control unit, and a connection terminal capable of supplying DC power extracted from the power storage unit to the power tool. Power adapter for power tools. 2. A voltage detecting unit for detecting an amount of electric energy stored in the power storage unit and outputting power storage information; and a power generation unit when the power storage unit is in a fully charged state based on the input power storage information. The power supply adapter for a power tool according to claim 1, further comprising: a control unit that stops supplying the pressurized air supplied to the power tool. 3. A charging device for charging a battery used in a power tool, comprising: a power generation unit for generating power using pressurized air as an energy source; and a predetermined voltage or a predetermined current from electric energy obtained by the power generation unit. A charging device comprising: a voltage / current control unit capable of outputting; and a connection terminal capable of supplying DC power output from the voltage / current control unit to the battery. 4. A temperature detecting section for outputting temperature information obtained from a temperature detecting element capable of detecting a cell temperature of the battery, wherein when the battery is fully charged based on the input temperature information, The charging device according to claim 3, further comprising: a control unit that stops supplying the pressurized air to be supplied to the power generation unit.