CN107370196B - Charging device and charging method - Google Patents
Charging device and charging method Download PDFInfo
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- CN107370196B CN107370196B CN201610316351.2A CN201610316351A CN107370196B CN 107370196 B CN107370196 B CN 107370196B CN 201610316351 A CN201610316351 A CN 201610316351A CN 107370196 B CN107370196 B CN 107370196B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a charging device and a charging method, the charging device comprises: a communication determination unit 12 that determines whether or not communication with an external device is possible via a USB communication terminal when the external device is connected to the USB interface; the terminal determination unit 14 determines whether or not the external device is a portable terminal, and if it is determined that communication with the external device is impossible and the external device is a portable terminal, the communication terminal control unit 15 performs a predetermined process on the USB communication terminal on the USB interface to supply a charging current larger than a standard charging current to the external device. Through the control of the USB communication terminal, the mobile terminal can be provided with a current larger than a standard charging current for quick charging. Therefore, when a mobile terminal with insufficient battery capacity is connected with an electronic device, the mobile terminal can be charged quickly even if the mobile terminal is not changed, thereby shortening the charging time from the start of the mobile terminal to the time when the mobile terminal can communicate with the electronic device.
Description
Technical Field
The present invention relates to a charging device and a charging method, and more particularly to a charging device and a charging method which are incorporated in an electronic device and charge a mobile terminal connected to the electronic device.
Background
In the prior art, when a mobile terminal such as a smart phone and an electronic device (for example, a vehicle-mounted device) are connected via a usb (universal Serial bus), they can be operated in conjunction with each other. With such a conventional technique, the operation result of the application installed on the mobile terminal can be output to the in-vehicle device, and the mobile terminal can be operated on the touch screen of the in-vehicle device.
If the mobile terminal can communicate with the in-vehicle device, the precondition is that the battery capacity accumulated by the battery of the mobile terminal must be enough to ensure that the mobile terminal can be driven. That is, when the mobile phone terminal and the in-vehicle device are connected by USB, and the battery capacity of the mobile terminal is insufficient, the in-vehicle device and the mobile terminal cannot communicate with each other. At this time, the mobile terminal is USB-charged by the battery of the in-vehicle device, and when the battery reaches a predetermined battery capacity and stores a certain amount of power, the mobile terminal can communicate with the in-vehicle device after being activated.
Specifically, the mobile terminal and the in-vehicle device are connected by USB, and when it is detected that the in-vehicle device and the mobile terminal cannot communicate, the mobile terminal is charged with a current of 500 mA. When the battery is continuously charged with a current of 500mA and reaches a predetermined battery capacity and stores a predetermined amount of power, the mobile terminal is automatically activated to communicate with the in-vehicle device.
However, there are the following problems: charging the mobile terminal with a standard charging current of 500mA takes a lot of time from the start of charging until the mobile terminal is powered on. During this time, since the in-vehicle device and the mobile terminal cannot communicate, the function on the mobile terminal side cannot be used on the in-vehicle device. Thus, the user needs to wait for a long time before the in-vehicle device and the mobile terminal can establish communication.
Among them, patent document 1 discloses a technique in which, by detecting whether a charger or a USB device capable of supplying power to a mobile terminal is connected to a USB interface of the mobile terminal, when it is detected that the charger is connected, the charger supplies a charging current of 500mA greater than 100mA to a battery of the mobile terminal, thereby quickly starting the mobile terminal.
In patent document 1, whether a charger or a USB device is connected is determined by detecting a voltage value of a D-terminal on a USB interface. That is, when a predetermined voltage is applied to the D + terminal of the USB interface, if the D-terminal and the D + terminal are the same voltage (the D-and D + terminals are shorted), it can be determined that a charger is connected, and when the D-terminal is zero voltage, it can be determined that a USB device is connected.
Further, patent document 2 discloses the following: a device connected to a USB interface is judged whether or not it is a device corresponding to a charging mode, and when the connected device is a device corresponding to the charging mode, the operating mode is set to the charging mode, the maximum allowable current value of the charging current is set to a value higher than the maximum allowable current value of the charging current in a normal mode, and then the device is supplied with power.
However, in patent document 1, when a USB device is connected to the mobile terminal, the battery of the mobile terminal is supplied with a current of 100mA, and the battery is kept in a standby state until the output voltage value of the battery becomes equal to or higher than a simple start voltage. Therefore, when the mobile terminal is connected to the in-vehicle device, not the charger, the battery of the mobile terminal is charged, and the mobile terminal is not activated until the battery capacity is less than the predetermined battery capacity. Therefore, the problem that it takes much time to charge before the in-vehicle device establishes communication with the mobile terminal is not solved.
On the other hand, according to the technique described in patent document 2, if the device connected to the USB interface is a device corresponding to the charging mode, the device can be charged quickly with a current larger than usual. However, in order to implement this technology in a mobile terminal, the mobile terminal needs to be changed so that it can correspond to a charging mode. However, if the mobile terminal is a vendor mobile terminal without a charging mode, rapid charging is not possible, and therefore, the problem that it is necessary to wait for a long time before the in-vehicle device establishes communication with the mobile terminal is still not solved.
Documents of the prior art
Patent document 1: japanese patent laid-open publication No. 2009-60617
Patent document 2: japanese laid-open patent publication No. 2012-244847
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to: when a mobile terminal with insufficient battery capacity is connected to an electronic device, the charging time from the activation of the mobile terminal to the possible communication with the electronic device is shortened, even if the mobile terminal is not changed at all.
In order to solve the above problem, in the present invention, when the USB interface of the electronic device is connected to the external device, it is determined whether or not the external device can communicate with the external device via the USB communication terminal of the USB interface, and it is determined whether or not the external device is a mobile terminal. When it is determined that communication with the external device is impossible and the external device is a mobile terminal, the charging current supplied to the external device is a current larger than the standard charging current by performing predetermined processing on the USB communication terminal of the USB interface.
Drawings
Fig. 1 is a diagram showing a hardware configuration of an electronic device of a charging device according to the present embodiment.
Fig. 2 is a block diagram showing components of the charging device according to the present embodiment, and a functional configuration example of the control unit.
Fig. 3 is a flowchart showing an example of the operation of the charging device according to the present embodiment.
Fig. 4 is a flowchart showing another operation example of the charging device according to the present embodiment.
Description of the symbols:
11 connection detecting part
12 communication determination unit
13 charging current supply unit
14 terminal determination unit
15 communication terminal control part
100 electronic device
101 USB interface
102 control part
103 current detecting part
104 connection switching part
105 a predetermined processing part
200 mobile terminal
300 USB line
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a diagram showing a hardware configuration of an electronic device of a charging device according to the present embodiment. As one example of the electronic device, an in-vehicle device may be used. The charging device according to the present embodiment is incorporated in an electronic apparatus (in-vehicle apparatus) 100, and charges an external apparatus connected to the electronic apparatus 100 via a USB cable 300.
Here, the external device is the mobile terminal 200 conforming to the USB2.0 protocol standard. For example, the mobile terminal 200 may be a smart phone, a tablet computer, a portable music player, a mobile charging power supply, and the like. The external device to be charged by the electronic device 100 includes various devices that can be USB-connected in addition to the mobile terminal 200 corresponding to the USB2.0 protocol standard. Fig. 1 shows a state in which the mobile terminal 200 is connected.
As shown in FIG. 1, an electronic device 100 includes a USB interface 101, a control unit 102, a current detection unit 103, a connection switching unit 104, a predetermined processing unit 105, and a current detection resistor R. In these configurations, the control unit 102, the current detection unit 103, the connection switching unit 104, the predetermined processing unit 105, and the current detection resistor R constitute the charging device according to the present embodiment.
The USB interface 101 has a VBUS terminal to which a USB power supply line is connected, USB communication terminals (a D + terminal and a D-terminal) to which a communication line is connected, and a GND terminal which is grounded. A current detection resistor R is connected in series to the USB power supply line between the VBUS terminal and the power source, and the current detection unit 103 is connected in parallel to the current detection resistor R. The current detection unit 103 detects the value of the current flowing through the USB power supply line by this connection method. The current detection unit 103 notifies the control unit 102 of the detected current value.
The D + terminal and the D-terminal (hereinafter referred to as "D +/D-terminals") of the USB interface 101 are connected to the connection switching unit 104 via communication lines. The connection switching unit 104 switches one of the control unit 102 and the predetermined processing unit 105 to be connected to the D +/D-terminal. The control unit 102 corresponds to a communication processing unit, and has a function of processing communication between external devices connected to the USB interface 101 and a function of processing charging of the external devices.
The predetermined processing unit 105 is configured to short-circuit the D + terminal and the D-terminal of the USB interface 101 as an example of predetermined processing. Alternatively, as another example of the predetermined processing, the D + terminal and the D-terminal of the USB interface 101 are connected by a low resistance. The low resistance is a resistance equal to or less than a predetermined value necessary for determining that the electronic device 100 connected to the mobile terminal 200 is a charger.
The connection switching unit 104 normally switches the connection with the D +/D-terminal to the control unit 102 side (communication processing unit). When the control unit 102 determines that a predetermined condition described later is satisfied, the connection switching unit 104 switches the connection to the D +/D terminal from the control unit 102 side to the predetermined processing unit 105 side in accordance with an instruction from the control unit 102.
When the D +/D-terminal is connected to the predetermined processing unit 105, the D + and D-terminals of the USB interface 101 are connected to each other by short-circuiting or by low resistance as described above. When the mobile terminal 200 connected to the USB interface 101 detects a short-circuit connection of the D +/D terminal or a low resistance connection, it is determined that a USB charger is connected, and a large-current fast charge of about 1A is requested to the electronic device 100, and the control unit 102 executes the fast charge according to the request.
Fig. 2 is a block diagram showing a configuration example of functions provided in the control unit 102. As shown in fig. 2, the control unit 102 includes: connection detecting unit 11, communication determining unit 12, charging current supplying unit 13, terminal determining unit 14, and communication terminal control unit 15. These functional blocks 11 to 15 may be constituted by any one of hardware, dsp (digital Signal processor), and software. For example, when the function modules 11 to 15 are constituted by software, the function modules are actually constituted by a CPU, a RAM, a ROM, and the like, and are realized by an application program stored in a recording medium such as a RAM, a ROM, a hard disk, or a semiconductor memory.
The connection detection unit 11 detects whether or not an external device is connected to the USB interface 101 of the electronic device 100. The connection may be determined using known techniques. That is, in the following figures, pull-down resistors are connected to the D + and D-lines connected to the D +/D-terminals of the electronic device 100, respectively. On the other hand, a pull-up resistor is connected to the D + line on the external device side. The USB power supply line of the electronic apparatus 100 is normally in a high state (normal power supply state). If the detection is impossible by the above-described known technique, the current detection unit 103 may detect whether or not a current flows, and if a current flows, it may be determined that an external device is connected.
When the electronic apparatus 100 is connected to the external apparatus through the USB cable 300 in the above state, the electronic apparatus 100 supplies power to the external apparatus through the USB power supply line. When power is supplied to the external device, the D + line is pulled up to a high level by the pull-up resistor. These can be determined by detection by control unit 102 (in this case, connection switching unit 104 is switched to the control unit 102 side), that an external device is connected to electronic device 100.
The communication determination unit 12 determines whether or not the external device detected by the connection detection unit 11 can communicate with the detected external device via the D +/D-terminal. When the battery capacity of the external device battery does not reach the capacity to drive the external device, the device cannot be started, and since the external device cannot be started, communication of sound, image, data, and the like between the electronic device 100 and the external device is not possible. In order to drive the external device, the standby power must be secured from the off state to the power on state.
The communication determination unit 12 may determine whether or not communication is possible, and a known technique may be used. For example, the communication determination unit 12 may determine that communication with the external device is not possible when the voltage applied to the D +/D-terminal is equal to or lower than a predetermined value. However, even if the battery capacity of the external device is insufficient and the external device cannot be driven, the minimum standby power is ensured, and therefore, the external device can be controlled to be charged from the electronic device 100.
When the connection detector 11 detects that an external device is connected to the USB interface 101 of the electronic device 100, the charging current supplier 13 supplies a required charging current to the external device via the VBUS terminal. The magnitude of the charging current required for the external device differs depending on the type of the external device. For example, when the external device is the mobile terminal 200 that satisfies the USB2.0 protocol standard, the charging current required by the external device is 500 mA. Therefore, when the mobile terminal 200 is connected to the USB interface 101, the charging current supply unit 13 supplies a charging current of 500mA to the mobile terminal 200 in accordance with the request of the mobile terminal 200.
However, in the present embodiment, even if the external device connected to the USB interface 101 is the mobile terminal 200, when the communication determination unit 12 determines that the communication with the mobile terminal 200 is impossible, the charging current supply unit supplies the mobile terminal 200 with the charging current of about 1A in accordance with the request of the mobile terminal 200. When mobile terminal 200 requires a charging current of about 1A, connection switching unit 104 switches the connection to the D +/D terminal from the control unit 102 side to the predetermined processing unit 105 side as described above.
The terminal determining unit 14 determines whether or not the external device detected by the connection detecting unit 11 is the mobile terminal 200. Specifically, the terminal determining unit 14 determines whether or not the external device connected to the USB interface 101 is the mobile terminal 200 by checking whether or not the current of the USB power supply line detected by the current detecting unit 103 is the standard charging current value (500mA) of the mobile terminal 200. When it is checked whether or not the current on the USB power supply line is the standard charging current value of mobile terminal 200, the external device may be determined to be mobile terminal 200 when the error is about 500mA ± 10mA, which is about 10 mA.
When the terminal determining unit 14 determines that the external device is not the mobile terminal 200, the communication terminal control unit 15 continues to maintain the connection between the D +/D-terminal of the USB interface 101 and the control unit 102, and maintains the switching of the connection switching unit 104 on the control unit 102 side.
On the other hand, when the terminal determining unit 14 determines that the external device is the mobile terminal 200, the communication terminal control unit 15 performs a predetermined process on the D +/D-terminal of the USB interface 101, and supplies a charging current larger than the standard charging current (500mA) of the mobile terminal 200 to the mobile terminal 200. That is, the communication terminal control unit 15 controls the connection switching unit 104 to switch the connection of the D +/D terminal from the control unit 102 side to the predetermined processing unit 105 side, and short-circuits or connects the D + terminal and the D terminal with a low resistance.
When the D +/D-terminals are short-circuited or connected with a low resistance by the control of the communication terminal control unit 15, the mobile terminal 200 detects this, and then determines that the connected counterpart is a charger device and requests a charging current of about 1A to the electronic device 100. In response to the request, the charging current supply unit 13 of the electronic device 100 supplies the mobile terminal 200 with a charging current of about 1A, thereby realizing quick charging of the mobile terminal 200.
After the quick charge is started, that is, after the predetermined processing unit 105 performs the processing according to the control of the communication terminal control unit 15, the communication determination unit 12 determines whether or not the communication with the mobile terminal 200 is possible. In order to perform this determination, the communication determination unit 12 instructs the communication terminal control unit 15 to cancel the predetermined process for a short time. That is, the communication terminal control unit 15 controls the connection switching unit 104 to return the connection with the D +/D-terminal to the control unit 102 side for a short time by the predetermined processing unit 105 side, and then the communication determination unit 12 determines whether or not the communication with the mobile terminal 200 is possible via the D +/D-terminal.
When the battery of the mobile terminal 200 stores power to a predetermined battery capacity by the quick charge, the mobile terminal 200 is activated and can communicate with the electronic device 100. Here, when the communication determination unit 12 determines that communication with the mobile terminal 200 is possible, the communication terminal control unit 15 controls the predetermined processing unit 105 to cancel the predetermined processing. That is, the connection switching unit 104 continues to return the connection to the control unit 102 side for a short time.
On the other hand, when the communication determination unit 12 determines that communication with the mobile terminal 200 is impossible, the communication terminal control unit 15 causes the predetermined processing unit 105 to continue the predetermined processing. That is, the connection switching unit 104 is controlled to return the connection that has been returned to the control unit 102 for a short time to the predetermined processing unit 105 side again. At this time, the fast charge is continued from the electronic apparatus 100 to the mobile terminal 200.
Various types of timing are conceivable as the timing at which the communication determination unit 12 determines whether or not communication with the mobile terminal 200 is possible after the quick charging is started. For example, the communication determination unit 12 periodically (at predetermined time intervals) determines whether or not communication with the mobile terminal 200 is possible. Alternatively, when it is detected that the user has performed an operation on the electronic device 100, it may be determined whether or not communication with the mobile terminal 200 is possible.
Fig. 3 is a flowchart showing an operation example of the charging device of the present embodiment configured as described above. In the flowchart shown in fig. 3, the electronic apparatus 100 starts when the power is turned on. First, the connection detecting unit 11 detects whether or not an external device is connected to the USB interface 101 of the electronic apparatus 100 (step S1). Here, when the USB interface 101 is not connected to the external device, the determination process of step S1 is repeated.
When the connection detecting unit 11 detects that the external device is connected to the USB interface 101, the communication determining unit 12 determines whether the electronic device 100 can communicate with the connected external device (step S2).
When the communication determination unit 12 determines that communication with the external device is impossible, the terminal determination unit 14 determines whether or not the external device is the portable terminal 200 (step S3).
When the terminal determining unit 14 determines that the external device is the portable terminal 200, the communication terminal control unit 15 performs a predetermined process on the D +/D-terminal of the USB interface 101 (step S4). That is, the communication terminal control unit 15 controls the connection switching unit 104 to switch the connection with the D +/D-terminal from the control unit 102 side to the predetermined processing unit 105 side, and short-circuits or connects the D + terminal D-terminal with low resistance.
When the D + terminal and the D-terminal are short-circuited or connected with a low resistance, mobile terminal 200 detects that the situation, mobile terminal 200 requests a charging current of about 1A, and charging current supply unit 13 supplies a charging current of about 1A to mobile terminal 200 in accordance with the request, thereby performing quick charging of mobile terminal 200 (step S5). After the quick charge is started, the communication determination unit 12 determines whether or not a predetermined time has elapsed or whether or not the user has operated the electronic device 100 (step S6).
When the predetermined time has not elapsed or the operation by the user has not been detected, the determination process of step S6 is repeated. When detecting the elapse of the predetermined time or the user operation, the communication determination unit 12 determines again whether or not communication with the mobile terminal 200 is possible (step S7). When it is determined that communication with the mobile terminal 200 is still impossible, the process returns to step S6. At this time, the quick charge is continuously performed. On the other hand, when it is determined that communication with the mobile terminal 200 is possible, the communication terminal control unit 15 controls the predetermined processing unit 105 to cancel the predetermined processing (step S8). That is, the communication terminal control unit 15 controls the connection switching unit 104 to switch the connection with the D +/D-terminal to the control unit 102 side.
Then, after establishing communication by supplying the standard charging current of the mobile terminal 200 to the mobile terminal 200, the charging current supply unit 13 may adjust the magnitude of the charging current in accordance with the protocol request in accordance with the two-party communication protocol, and perform normal charging of the remaining capacity of the battery (step S9). Here, when it is determined by the communication determination section 12 that communication with the external device is possible at step S2 and it is determined by the terminal determination section 14 that the external device is not the mobile terminal 200 at step S3, the process of step S9 is performed. At this time, the charging current supply unit 13 supplies a standard charging current required by the external device to the mobile terminal 200, and performs normal charging.
In the above-described flow, the order of the determination processing at step S2 and the determination processing at step S3 may be reversed.
As described above in detail, in the present embodiment, when an external device is connected to the USB interface 101 of the electronic apparatus 100, it is determined whether the electronic apparatus 100 can communicate with the external device via the USB communication terminal (D +/D-terminal) of the USB interface 101, and when communication is not possible, it is determined whether the external device is the mobile terminal 200. When the electronic device 100 cannot communicate with the external device and the external device is the mobile terminal 200, the connection switching unit 104 is switched from the control unit 102 side to the predetermined processing unit 105 side, and the charging current supplied from the electronic device 100 to the mobile terminal 200 is larger than the standard charging current (500mA) of the mobile terminal 200 by the short-circuit connection between the D +/D-terminals or the connection with a low resistance.
In the present embodiment configured as described above, when the battery capacity of the portable terminal 200 connected to the USB interface 101 of the electronic device 100 is insufficient and communication is impossible, the portable terminal 200 can be supplied with a current (1A) larger than the standard charging current of the portable terminal 200 by controlling the D +/D-terminal in the electronic device 100, and can be charged quickly. Therefore, even if the mobile terminal 200 side is not changed at all, only the electronic apparatus 100 side is improved, so that the charging time from the start of the mobile terminal 200 to the communication with the electronic apparatus 100 can be shortened.
In the above-described embodiment, the in-vehicle device is described as an example of the electronic device 100, but the present invention is not limited to this. For example, the charging device of the present embodiment may be incorporated in a dedicated computer for a specific use other than a general-purpose computer such as a notebook computer.
In the above-described embodiment, after the quick charge is started, the communication determination unit 12 determines whether or not communication with the mobile terminal 200 is possible, and when communication is possible, the description of the predetermined processing is cancelled. The quick charge may also be continued until the battery of the mobile terminal 200 is fully charged, as shown in the flowchart of fig. 4.
In the above-described embodiments, the description has been given taking a mobile terminal satisfying the USB2.0 protocol standard as an example, and a mobile terminal satisfying the USB3.0 protocol compatible with the USB2.0 protocol standard and the like is also applicable to the present invention.
In the above embodiment, the charging current of 1A was taken as an example for explanation, but the present invention is not limited to this, and may be any current value within the maximum charging current value of 2.1A or the maximum charging current value of the USB terminal.
In addition, the above embodiments have been described with reference to only one specific example, and the technical scope of the present invention is not limited by this example. That is, various modifications may be made without departing from the spirit or essential characteristics of the present invention.
Claims (10)
1. A charging device which is incorporated in an electronic device and charges an external device connected to the electronic device, the charging device comprising:
a connection detection unit for detecting whether an external device is connected to the USB interface of the electronic device;
a charging current supply unit for supplying a charging current to the connected external device detected by the connection detection unit;
a communication determination unit configured to determine whether or not the external device detected by the connection detection unit can communicate with the external device via a USB communication terminal;
a terminal determination unit configured to determine whether or not the external device detected by the connection detection unit is a mobile terminal;
and a communication terminal control unit that performs a predetermined process on the USB communication terminal of the USB interface, and supplies a charging current larger than a standard charging current to the external device when the communication determination unit determines that the external device cannot communicate with the external device and the external device determined by the terminal determination unit is the mobile terminal.
2. A charging arrangement as claimed in claim 1,
the terminal determining unit determines whether the external device is a mobile terminal by determining whether a current on the USB power supply line is a standard charging current value of the mobile terminal.
3. A charging arrangement as claimed in claim 1,
the communication terminal control unit short-circuits the D + terminal and the D-terminal of the USB communication terminal of the USB interface as the predetermined process.
4. A charging arrangement as claimed in claim 1,
the communication terminal control unit connects the D + terminal and the D-terminal of the USB communication terminal of the USB interface with a low resistance as the predetermined process.
5. A charging device as claimed in claim 1, further comprising:
and a connection switching unit that is connected to the USB communication terminal, either one of a communication processing unit that performs communication-related processing on the external device or a predetermined processing unit that performs the predetermined processing, wherein the communication terminal control unit controls the connection switching unit to switch connection with the USB communication terminal from the communication processing unit to the predetermined processing unit when the communication determination unit determines that communication with the external device is impossible and the terminal determination unit determines that the external device is a mobile terminal.
6. A charging arrangement as claimed in claim 1,
the communication terminal control unit performs the predetermined process, and the communication determination unit determines whether or not communication with the mobile terminal is possible, and when it is determined that communication is possible, the communication terminal control unit cancels the predetermined process.
7. A charging arrangement as claimed in claim 6,
after the predetermined processing is performed by the communication terminal control unit, the communication determination unit periodically determines whether or not communication with the mobile terminal is possible.
8. A charging arrangement as claimed in claim 6,
the communication terminal control unit performs the predetermined processing, and the communication determination unit determines whether or not communication with the mobile terminal is possible when it is detected that the user operates the electronic device.
9. A charging method for charging an external device connected to an electronic device by a charging device built in the electronic device, comprising:
a connection detection step of detecting whether the external device is connected to the USB interface of the electronic device;
a charging current supply step of supplying a charging current to the connected external device detected in the connection detection step;
a communication determination step of determining whether or not communication with the external device detected in the connection detection step is possible via a USB communication terminal;
a terminal determination step of determining whether or not the external device detected in the connection detection step is a mobile terminal;
and a predetermined processing execution step of executing predetermined processing on the USB communication terminal of the USB interface, and supplying a charging current larger than a standard charging current to the external device when the communication determination step determines that communication with the external device is impossible and the external device determined by the terminal determination step is the mobile terminal.
10. The charging method according to claim 9, further comprising:
a communication re-determination step of re-determining whether or not communication with the mobile terminal is possible after the predetermined processing is executed in the predetermined processing execution step,
a predetermined process canceling step of canceling the predetermined process when the communication re-determination step determines that the communication with the mobile terminal is possible.
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| CN201610316351.2A CN107370196B (en) | 2016-05-12 | 2016-05-12 | Charging device and charging method |
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| WO2020166106A1 (en) * | 2019-02-15 | 2020-08-20 | パナソニックＩｐマネジメント株式会社 | Image-capturing device |
| JP7229208B2 (en) * | 2020-08-06 | 2023-02-27 | プライムプラネットエナジー＆ソリューションズ株式会社 | charging system |
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