JP2024012042A - charging system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure which makes fingers, etc., of a user less likely to touch with a power receiving terminal of a portable terminal and a feeding terminal of a charger.

SOLUTION: A power receiving terminal 21 of a portable terminal 10 is disposed in a terminal side recessed part 22 provided at a housing 11. A housing 41 of a charger 40 is provided with a device side protruding part 52 which enters the terminal side recessed part 22 when the portable terminal 10 is placed thereon. The device side protruding part 52 is provided with a protection part 53 which protects a feeding terminal 51 disposed on a facing surface 52a from a periphery and has a height from the facing surface 52a which is higher than that of the feeding terminal 51.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to a charging system that charges a mobile terminal placed on a charging device.

BACKGROUND ART Conventionally, a charging method has been adopted in which a mobile terminal is placed so that a power receiving terminal of the mobile terminal is connected to a power feeding terminal of a charging device, and the placed mobile terminal is charged by the charging device. For example, in the cradle system disclosed in Patent Document 1 below, a power supply contact (power supply terminal) of the cradle that is connected to a power reception contact (power reception terminal) of a placed mobile information terminal device is connected to a It is configured to elastically protrude inward. As a result, even in a configuration in which the power receiving contact is placed in a recess provided in the housing of the mobile information terminal device to prevent contact with the user's fingers, etc., the power feeding contact that protrudes into the inside of the mounting section can be By entering the recessed portion of the portable information terminal device and contacting the power receiving contact, contact pressure for connecting the power receiving contact and the power feeding contact is ensured, and charging is performed.

Japanese Patent Application Publication No. 2022-012919

In recent years, there has been a demand for mobile terminals that are powered by charging power from charging equipment to be small and lightweight, as well as to be able to charge quickly. It is expected that new capacitors will be adopted. Such a configuration can support rapid charging by employing a charging device that can instantaneously supply a large current to the capacitor of the mobile terminal.

However, in the charging configuration capable of supplying a large current as described above, it is necessary to prevent the user's fingers from touching the power receiving terminal of the mobile terminal or the power feeding terminal of the charging device, and this is disclosed in Patent Document 1 above. There is a risk that a user's finger or the like may come into contact with the power supply terminal that is formed to protrude inward from the mounting portion. Furthermore, even if a power storage device that does not require as large a current as a capacitor is used in a mobile terminal, it is desirable to prevent the user's fingers from touching not only the power receiving terminal of the mobile terminal but also the power supply terminal of the charging device. .

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to provide a configuration that prevents the user's fingers from touching the power receiving terminal of the mobile terminal and the power feeding terminal of the charging device. be.

In order to achieve the above object, the invention described in claim 1 of the claims is as follows:
A mobile terminal (10),
a charging device (40) for charging the mobile terminal placed such that a power supply terminal (51) is connected to a power reception terminal (21) of the mobile terminal;
A charging system (1) comprising:
The power receiving terminal is arranged in a terminal-side recess (22) provided in a terminal-side casing (11) forming an outer shell of the mobile terminal,
A device-side casing (41) forming an outer shell of the charging device is provided with a device-side convex portion (52) that enters into the terminal-side recess when placed,
The power feeding terminal is disposed on the opposing surface (52a) of the device side convex portion that faces the power receiving terminal during the placement,
The device-side convex portion is provided with a protection portion (53) that protects the power supply terminal from the surroundings and has a higher height from the opposing surface than the power supply terminal.

The invention according to claim 12 is
A mobile terminal (10a),
a charging device (40a) for charging the mobile terminal placed such that a power supply terminal (51) is connected to a power reception terminal (21) of the mobile terminal;
A charging system (1a) comprising:
The power supply terminal is arranged in a device-side recess (55) provided in a device-side casing forming an outer shell of the charging device,
A terminal-side casing forming an outer shell of the mobile terminal is provided with a terminal-side convex portion (25) that fits into the device-side recess when the mobile terminal is placed;
The power receiving terminal is arranged on the opposing surface of the terminal side convex portion that faces the power feeding terminal when placed,
The terminal-side convex portion is characterized in that a protection portion (26) that protects the power receiving terminal from the surroundings and is higher in height from the opposing surface than the power receiving terminal is provided.
Note that the reference numerals in parentheses above indicate correspondence with specific means described in the embodiments described later.

In the first aspect of the invention, the power receiving terminal of the mobile terminal is disposed within the terminal-side recess provided in the terminal-side casing of the mobile terminal. In addition, the device-side casing of the charging device is provided with a device-side protrusion that fits into the terminal-side recess when it is placed, and the power supply terminal is placed on the opposite surface of the device-side protrusion that faces the power receiving terminal when it is placed. be done. The device-side convex portion is provided with a protection portion that protects the power supply terminal from the surroundings and has a higher height from the opposing surface than the power supply terminal.

As a result, the power receiving terminal of the mobile terminal is placed in the recess on the terminal side, and the power supply terminal of the charging device is protected from the surroundings by the protection part provided on the convex part on the device side, so that the user's fingers etc. are placed inside the mobile terminal. It becomes difficult to touch the power receiving terminal and the power feeding terminal of the charging device, and safety can be ensured against electric shocks and the like.

In the invention of claim 2, the terminal-side housing includes a terminal-side base portion in which the terminal-side substrate is accommodated and a terminal-side terminal portion in which the terminal-side recess is provided, and the terminal-side base portion and the terminal-side terminal portion are detachable. configured as possible.

When using a power storage device such as a capacitor that emphasizes charging speed by instantly charging a large current, it is possible to charge the mobile device each time it is used without increasing the charging capacity too much. There are cases. In this type of operation, charging is repeated at a high frequency, which increases the number of times the power receiving terminal and power supply terminal come into contact with each other, leading to accelerated wear on each terminal, and depending on the state of wear, contact failure may occur. There is a risk that this may occur.

For this reason, by configuring the terminal side base where the terminal side board is accommodated and the terminal side terminal part where the terminal side recess is provided in a removable manner, even if the power receiving terminal becomes worn, the power receiving terminal can be moved to the terminal side. Since the entire terminal section can be replaced, it is possible to improve maintainability while ensuring safety.

In the invention of claim 3, the predetermined electrode provided on the terminal side board is connected to the relay terminal provided on the terminal side terminal part, so that the terminal side board can receive power via the power receiving terminal, and the terminal side board can receive power via the power receiving terminal. The portion is formed such that the relay terminal comes into contact with a predetermined electrode when attached to the terminal side base. As a result, the terminal side board is connected to the power receiving terminal simply by attaching the terminal side terminal part to the terminal side base, so there is no need to use a connector etc. to connect the terminal side board and the power receiving terminal, so there is no need for replacement work. You can increase your sexuality.

In the invention of claim 4, the device-side casing includes a device-side base portion in which the device-side board is housed and a device-side terminal portion in which the device-side convex portion is provided, and the device-side base portion and the device-side terminal portion are connected to each other. Constructed to be detachable.

Even in this case, as in the invention of claim 2, even if the power supply terminal becomes worn, the power supply terminal can be replaced along with the device side terminal part, so it is possible to improve maintainability while ensuring safety. can.

In the invention of claim 5, the predetermined electrode provided on the device side board is connected to the relay terminal provided in the device side terminal portion, so that the device side board can be powered via the power supply terminal, and the device side board is connected to the relay terminal provided in the device side terminal portion. The portion is formed such that the relay terminal comes into contact with a predetermined electrode when attached to the device side base. As a result, the device side board can be connected to the power supply terminal simply by attaching the device side terminal section to the device side base, so there is no need to use a connector etc. to connect the device side board and the power supply terminal, so replacement work is not required. You can increase your sexuality.

In the invention of claim 6, at least one of the power receiving terminal and the power feeding terminal is formed as a terminal that can be elastically deformed when connected. This makes it easier for one elastically deformed terminal to follow and press the other terminal, even if there are variations in the placement of the power receiving terminal on the mobile device or the placement of the power feeding terminal on the charging device. . Therefore, the contact pressure for connecting the power receiving terminal and the power feeding terminal can be easily ensured, and the power receiving terminal and the power feeding terminal can be reliably connected when placed.

In the invention of claim 7, the terminal-side concave portion and the device-side convex portion each include abutting portions that come into contact with each other when the device-side convex portion is inserted into the terminal-side concave portion and the power receiving terminal and the power feeding terminal are connected. provided. As a result, the pressing force when one elastically deformed terminal presses against the other terminal can be controlled according to the contact position, so the terminal may be damaged due to excessive contact pressure (pressure). This can be prevented.

In the invention of claim 8, the inner surface of the terminal-side recess is formed to be inclined so that it becomes narrower toward the back, and the outer surface of the device-side convex section is guided by the inner surface of the terminal-side recess when it is placed. It is formed slanted like this. As a result, when charging, simply by inserting the device side convex part into the terminal side concave part, the device side convex part is guided to the terminal side concave part and the power receiving terminal and the power feeding terminal are connected. Since there is no need to place the battery so as to align it, charging work efficiency can be improved. In particular, when performing work that involves repeating charging frequently, the effect of improving charging work efficiency becomes remarkable.

In the ninth aspect of the present invention, the terminal-side recess is provided in a portion of the terminal-side casing that is different from the portion to be gripped. This not only makes it difficult for the user's fingers while holding the mobile device to enter the recess on the terminal side, but also allows sweat on the hands and dirt on the hands to enter the recess on the terminal side and adhere to the power receiving terminal, etc. The condition can be suppressed.

In the tenth aspect of the present invention, the power supply terminal is formed to be attachable to and detachable from the opposing surface of the device-side convex portion. As a result, a worn power supply terminal can be replaced, so that poor contact caused by terminal wear can be suppressed.

In the invention of claim 11, a pair of power receiving terminals and a pair of power feeding terminals are provided, and the charging device holds the mobile terminal so that the center of gravity of the mobile terminal when placed is vertically projected between the pair of power feeding terminals. A holding part is provided. This makes it easier for the weight of the mobile terminal to be applied to the power receiving terminal when it is placed, so that contact pressure for connecting the power receiving terminal and the power feeding terminal can be easily ensured.

In the twelfth aspect of the invention, the power supply terminal of the charging device is disposed within the device-side recess provided in the device-side casing of the charging device. In addition, the terminal-side housing of the mobile terminal is provided with a terminal-side protrusion that fits into the device-side recess when placed, and the power receiving terminal is placed on the opposite surface of the terminal-side protrusion that faces the power supply terminal when placed. be done. The terminal-side convex portion is provided with a protection portion that protects the power receiving terminal from the surroundings and has a higher height from the opposing surface than the power receiving terminal.

As a result, the power supply terminal of the charging device is placed in the recess on the device side, and the power receiving terminal of the mobile terminal is protected from the surroundings by the protection part provided on the convex part on the terminal side, so that the user's fingers etc. are protected from the mobile terminal. It becomes difficult to touch the power receiving terminal and the power feeding terminal of the charging device, and safety can be ensured against electric shocks and the like.

In the thirteenth aspect of the invention, the mobile terminal includes a terminal-side capacitor that functions as a power storage device. The charging device also includes a device-side capacitor that functions as a power storage device, a switching element that opens and closes the connection between the device-side capacitor and the terminal-side capacitor via a pair of power feeding terminals and a pair of power receiving terminals, and a switching element that opens and closes the connection between the device-side capacitor and the terminal-side capacitor via a pair of power feeding terminals and a pair of power receiving terminals. and a control circuit that performs a charging process of charging a terminal-side capacitor using power from the device-side capacitor by controlling the state. Then, the control circuit controls the switching element to open state when the resistance value of the object that comes into contact between the pair of power supply terminals is equal to or less than a predetermined threshold value for which connection with the power reception terminal is assumed, and The switching element is controlled to be closed when the resistance value of the object in contact with the object exceeds the predetermined threshold value.

If a conductive object different from that to be charged comes into contact between a pair of power supply terminals of the charging device, current will flow from the device side capacitor of the charging device in accordance with the power supply via the power supply terminal. It is necessary to prevent this. There are fuses and the like to stop the supply when a large current flows, but it also becomes impossible to momentarily supply power to the terminal side capacitor. Furthermore, it is necessary to limit the power supply to a range where fuses and the like do not operate.

Therefore, by utilizing the fact that the resistance value between the power feeding terminals when a conductive foreign object comes into contact with the power receiving terminal is higher than the resistance value between the power feeding terminals when the power receiving terminals touch, By controlling the switching element to open when the resistance value of the object is below a predetermined threshold for connection with the power receiving terminal, the charging time can be reduced by rapid charging of the terminal-side capacitor using the device-side capacitor. It is possible to shorten the time. On the other hand, if the resistance value of the object that is in contact between the pair of power supply terminals exceeds the predetermined threshold value, it is assumed that an object different from the power reception terminal is in contact between the power supply terminals, and the switching element is controlled to be closed. By doing so, it is possible to quickly control the current so that it does not flow through a conductive foreign object or the like that comes into contact between the power supply terminals.

FIG. 2 is an explanatory diagram illustrating a schematic configuration of a mobile terminal and a charging device that constitute the charging system according to the first embodiment. FIG. 2 is a diagram of the mobile terminal in FIG. 1 viewed from the reading port side. FIG. 2 is a diagram of the mobile terminal of FIG. 1 viewed from the power supply terminal side. FIG. 2 is an explanatory diagram showing an enlarged view of the charging device of FIG. 1 together with a part of a mobile terminal. FIG. 2 is a block diagram illustrating the electrical configuration of the mobile terminal in FIG. 1. FIG. FIG. 2 is a block diagram illustrating the electrical configuration of the charging device of FIG. 1. FIG. FIG. 7A is an explanatory diagram showing the main parts of a mobile terminal according to a first modification of the first embodiment, in which FIG. A state in which FIG. 7(A) is viewed from the side is shown. FIG. 8(A) is an explanatory diagram showing main parts of a mobile terminal according to a second modification example of the first embodiment, and FIG. 8(B) is an explanatory diagram showing the main parts of a mobile terminal according to a third modification example of the first embodiment. FIG. FIG. 9A is an explanatory diagram showing main parts of a mobile terminal according to a second embodiment, in which FIG. 9(A) shows a state before being attached, and FIG. 9(B) shows a state when being attached. It is an explanatory view showing the main part of the charging device in a 2nd embodiment. FIG. 11(A) is an explanatory diagram showing main parts of a mobile terminal in a first modification of the second embodiment, in which FIG. 11(A) shows a state before being attached, and FIG. 11(B) shows a state when being attached. It is an explanatory view showing the main part of the charging device in the 1st modification of a 2nd embodiment. FIG. 13A is an explanatory diagram showing main parts of a mobile terminal according to a second modification of the second embodiment, in which FIG. 13(A) shows a state before being attached, and FIG. 13(B) shows a state when being attached. It is an explanatory view showing the main part of the charging device in the 3rd modification of a 2nd embodiment. FIG. 15A is an explanatory diagram showing main parts of a mobile terminal according to a third embodiment, in which FIG. 15(A) shows a state before being attached, and FIG. 15(B) shows a state when being attached. It is an explanatory view showing the main part of the charging device in a 3rd embodiment. FIG. 17(A) is an explanatory diagram illustrating main parts of a mobile terminal and a charging device that constitute a charging system according to a fourth embodiment; FIG. 17(A) shows a state before being attached, and FIG. 17(B) shows a state when being attached. Indicates the status of FIG. 18(A) is an explanatory diagram showing the main parts of the charging device in the fifth embodiment, FIG. 18(A) shows the state of the protective part etc. seen from the power receiving terminal side, and FIG. 18(B) shows the opposing surface of the convex part. Shows the state of the protective part etc. as seen from the direction along the 19(A) is an explanatory diagram showing the main parts of the charging device in the first modification of the fifth embodiment, FIG. 19(A) shows the state of the protection part etc. seen from the power receiving terminal side, and FIG. The state of the protection part etc. seen from the direction along the opposing surface of the convex part is shown. FIG. 20A is an explanatory diagram showing the main parts of a charging device in a second modification of the fifth embodiment, in which FIG. The state of the protection part etc. seen from the direction along the opposing surface of the convex part is shown. FIG. 21A is an explanatory diagram showing the main parts of a charging device in a third modification of the fifth embodiment, in which FIG. The state of the protection part etc. seen from the direction along the opposing surface of the convex part is shown. It is an explanatory view explaining the main parts of a portable terminal and a charging device which constitute a charging system concerning a 6th embodiment. FIG. 7 is an explanatory diagram showing main parts of a mobile terminal according to a modification of the sixth embodiment. It is an explanatory view explaining the main part of the charging device in a 7th embodiment.

[First embodiment]
A first embodiment of the charging system of the present invention will be described below with reference to the drawings.
A charging system 1 according to the present embodiment shown in FIG. 1 includes a mobile terminal 10 that requires charging and a charging device 40 that charges the mobile terminal 10. The system is configured to charge the mobile terminal 10 placed on the charging device 40 so that the mobile terminal 10 is connected to the charging device 40.

First, the configuration of the mobile terminal 10 will be explained with reference to the drawings.
The mobile terminal 10 according to the present embodiment is configured as a portable information code reader that optically reads information codes such as barcodes and QR codes (registered trademark). As shown in FIGS. 1 to 4, the outer shell of the mobile terminal 10 is formed by a casing 11 made of synthetic resin such as ABS resin, and various electronic components such as a circuit board 30 are housed inside the casing 11. A storage space is formed to accommodate the The casing 11 includes a reading section 12 in which a reading port 12a is formed to introduce reflected light from the information code into the inside, a grip section 13 that is held when directing the reading port 12a toward the information code, and a pair of power receiving terminals. 21 is formed to have a lower end portion 14 exposed.

As shown in FIGS. 2 and 3, two terminal-side recesses 22 are formed in the protruding portion of the lower end portion 14 so as to open deeply in the longitudinal direction of the grip portion 13, exposing the pair of power receiving terminals 21, respectively. ing. Since both end-side recesses 22 open in the direction in which the lower end portion 14 protrudes, it is difficult to touch the inside of the end-side recess 22 . As shown in FIG. 4, the terminal side recess 22 has the power receiving terminal 21 disposed on the bottom surface 22a at a predetermined depth (length in the longitudinal direction of the gripping section 13) h1 inside the terminal side recess 22, and 22b is formed to be inclined so that it becomes narrower toward the back (bottom side). The terminal side recess 22 is provided so that the user's finger or the like does not come into contact with the power receiving terminal 21, and the depth h1 of the bottom surface 22a is set to, for example, about 5 mm to 10 mm. Further, the opening shape of the terminal side recess 22 is set to be approximately circular with a long axis D1 of about 5 mm to 15 mm on the front side. Note that the housing 11 may correspond to an example of a "terminal side housing."

As shown in FIG. 5, the mobile terminal 10 includes a control unit 31 consisting of a CPU, etc., a storage unit 32 consisting of ROM, RAM, non-volatile memory, etc., and a light receiving sensor (for example, a C-MOS area sensor, a CCD area sensor, etc.). An imaging unit 33 configured as a camera equipped with a camera, an illumination unit 34 that emits illumination light toward the imaging field of the imaging unit 33, a notification unit 35, wireless communication with host devices, communication via the charging device 40, etc. The communication unit 36 is provided with a communication unit 36 configured as a communication interface for performing the following. At least some of these various electronic components are housed in a housing space within the housing 11 while being mounted on the circuit board 30. For example, the imaging section 33 and the illumination section 34 are arranged in a housing such that the imaging section 33 has an imaging range in front of the reading port 12a, and the illumination section 34 emits illumination light toward the imaging field of view through the reading port 12a. It is housed within the body 11.

The control unit 31 starts a reading process using the captured image of the information code C (see FIG. 5) captured by the imaging unit 33 in response to an instruction from the host device via the communication unit 36, and performs this reading. It is configured to decode the data recorded in the information code C during processing using a predetermined decoding method. The reading results etc. obtained through such reading processing are transmitted to a host device etc. via the communication unit 36 at a predetermined timing.

The notification section 35 includes a light emitting section such as an LED, a buzzer, a vibrator, etc., and the control section 31 controls the light emitting state of the light emitting section, the sounding state of the buzzer, and the vibration state of the vibrator, thereby notifying the user. On the other hand, it is configured to give a predetermined notification depending on the reading result of the reading process.

Furthermore, a power supply control section 37 and a capacitor 38 are provided within the housing 11 . The power supply control unit 37 is controlled by the control unit 31 to charge a capacitor 38 using the power supplied via the power receiving terminal 21 and to supply power from the capacitor 38 to various electronic components of the mobile terminal 10. The system is configured to perform control, etc. The capacitor 38 is, for example, an electric double layer capacitor (supercapacitor), and is a power storage device that is excellent in rapid charging of secondary batteries such as lithium ion batteries.

Next, the configuration of the charging device 40 will be explained with reference to the drawings.
The charging device 40 according to the present embodiment is a stationary charging stand that can charge the mobile terminal 10 placed thereon using power supplied from an external power source such as a commercial power source. As shown in FIGS. 1 and 4, the charging device 40 has an outer shell formed by a casing 41 made of synthetic resin such as ABS resin, and various electronic components such as a circuit board 60 are housed inside the casing 41. A storage space is formed to accommodate the The housing 41 is provided with a holding portion 42 that holds the mobile terminal 10 from the lower end portion 14 side during the above-mentioned placement.

The housing 41 is formed with two device-side convex portions 52 protruding substantially upward from the bottom of the holding portion 42, in which a pair of power supply terminals 51 are disposed, respectively. The device-side convex portion 52 is formed to fit into the device-side concave portion 22 of the placed mobile terminal 10, and the power supply terminal 51 is inserted into the device-side convex portion 52 facing the power receiving terminal 21 when placed above. It is arranged on the opposing surface 52a. The outer surface 52b of the device side convex portion 52 is formed to be inclined according to the inclination angle of the inner surface 22b of the terminal side recess 22 so as to be guided by the inner surface 22b of the terminal side recess 22 when placed.

Here, the effect of forming the outer surface 52b of the device-side convex portion 52 to be inclined in accordance with the inclination angle of the inner surface 22b of the terminal-side recess 22 will be described below.
When placing a mobile terminal on a charging device, the positions of the power receiving terminal and the power feeding terminal may not match if the mobile terminal is placed roughly, so it is necessary to place the mobile terminal while checking the positions of the power receiving terminal and the power feeding terminal. Therefore, when repeating the charging operation, there is a problem in that it takes time to confirm the positions of both terminals and the operation becomes complicated. On the other hand, if the contact area between the power receiving terminal and the power feeding terminal is increased so that the power receiving terminal and the power feeding terminal are in contact with each other even when the mounting positions vary, this not only increases the cost but also becomes a factor that hinders miniaturization.

Therefore, in the present embodiment, the outer surface 52b of the device-side convex portion 52 is formed to match the inclination angle of the inner surface 22b, as described above, so that the mobile terminal 10 can be roughly mounted on the charging device 40. Even if the device side convex portion 52 is guided by the inner surface 22b, the power receiving terminal 21 and the power feeding terminal 51 can be reliably brought into contact with each other.

The device-side convex portion 52 is provided with a protection portion 53 that protects the power supply terminal 51 from the surroundings and has a higher height from the opposing surface 52a than the power supply terminal 51. Specifically, the protection part 53 has a substantially annular shape, is formed integrally with the device-side convex part 52, has an inner diameter D2 of about 3 mm to 5 mm, and has a surface of the power supply terminal 51 (the power receiving terminal 21 comes into contact with it). The depth h2 to the contact surface) is set to, for example, about 1 mm to 5 mm. Note that the casing 41 may correspond to an example of a "device-side casing."

Further, the holding portion 42 and both device side convex portions 52 are formed so that the weight of the mobile terminal 10 is easily applied to both power receiving terminals 21 when placed. Specifically, the holding portion 42 and both device-side convex portions 52 are formed so that the mobile terminal 10 held when placed is vertically projected between the pair of power supply terminals 51. has been done.

As shown in FIG. 6, the charging device 40 includes a control section 61 including a CPU, memory, etc. that can control the entire charging device 40, an operation section 62, a placement detection section 63, a communication section 64, a power supply control section 65, and It is equipped with a capacitor 66 and the like. At least some of these various electronic components are housed in a housing space within the housing 41 while being mounted on the circuit board 60. The operation section 62 has an operation button, etc., and is configured to give an operation signal to the control section 61 according to the operation of the operation button, etc. Upon receiving this operation signal, the control section 61 converts the operation signal. Perform actions according to the content. The placement detection unit 63 is configured to function as a device-side detection unit that detects a placement state in which the mobile terminal 10 is placed in a chargeable manner while being held by the holding unit 42 . The communication unit 64 is configured as an interface for performing wireless or wired data communication with the mobile terminal 10, host equipment, etc., and is configured to perform communication processing in cooperation with the control unit 61. ing.

The power supply control unit 65 is controlled by the control unit 61 to charge a capacitor 66 using power supplied from an external power source, and to control charging of a capacitor 66 using power supplied from the capacitor 66 via a power supply terminal 51 to a mobile terminal. It is configured to perform control such as charging the battery 10. The capacitor 66 functions as an apparatus-side power storage device, and is housed in the casing 41 so that the state of charge and the like can be managed by the power supply control unit 65.

In the charging system 1 configured as described above, when the placement detection unit 63 detects that the mobile terminal 10 is placed on the charging device 40, the power supply control unit 65 controlled by the control unit 61 controls the capacitor 66. A charging process is started to charge the mobile terminal 10 via the power supply terminal 51 using the power from the mobile terminal 51 . In this charging process, a large current instantly flows from the capacitor 66 of the mobile terminal 10 to the capacitor 38 of the mobile terminal 10, thereby enabling rapid charging.

On the other hand, when reading the information code C while holding the mobile terminal 10, since the power receiving terminal 21 is disposed within the terminal side recess 22, it becomes difficult for the user's fingers etc. to touch the power receiving terminal 21, resulting in an electric shock. It is possible to ensure safety regarding such matters.

Further, the housing 41 of the charging device 40 is provided with a device-side convex portion 52 that enters into the terminal-side recess 22 when placed, and the device-side convex portion 52 has a power supply terminal 51 disposed on the opposing surface 52a. A protective portion 53 is provided that protects the power supply terminal 51 from the surroundings and has a higher height from the opposing surface 52a than the power supply terminal 51. Therefore, in the case of the charging device 40, similarly to the mobile terminal 10, it becomes difficult for the user's finger or the like to touch the power supply terminal 51 of the charging device 40, and safety can be ensured with respect to electric shock and the like.

In the present embodiment, the inner surface 22b of the terminal-side recess 22 is formed to be inclined so that it becomes narrower toward the back, and the outer surface 52b of the device-side protrusion 52 is formed inside the terminal-side recess 22 when the device is placed. It is formed to be inclined so as to be guided by the side surface 22b. As a result, when charging, by simply inserting the device side protrusion 52 into the terminal side recess 22, the device side protrusion 52 is guided by the terminal side recess 22 and the power receiving terminal 21 and the power feeding terminal 51 are connected. Since it is not necessary to position the terminal 21 and the power supply terminal 51 in alignment with each other, charging workability can be improved. Particularly, when the capacitor 38 is employed as in this embodiment, the effect of improving the charging work efficiency becomes remarkable when performing work in which rapid charging is repeated frequently.

Note that the opening shape of the terminal side recess 22 is not limited to a substantially circular shape, and may also be, for example, a perfect circular shape, an elliptical shape, a polygonal shape, or the like. Even in this case, the outer surface 52b of the device-side convex portion 52 is formed to be inclined so as to be guided by the inner surface 22b of the terminal-side recess 22 when placed, thereby producing the above effect.

Furthermore, in this embodiment, the terminal side recess 22 is provided in a protruding portion of the lower end portion 14 of the housing 11 that is different from the grip portion 13 . This not only makes it difficult for the user's fingers holding the grip part 13 of the mobile terminal 10 to enter the terminal-side recess 22, but also prevents sweat from the hands, dirt, etc. on the hands from entering the terminal-side recess 22 to receive power. It is possible to prevent the adhesive from adhering to the terminals 21 and the like.

Further, in the present embodiment, a pair of power receiving terminals 21 and a pair of power feeding terminals 51 are provided, and the charging device 40 is configured such that the center of gravity of the mobile terminal 10 when placed is vertically projected between the pair of power feeding terminals 51. A holding section 42 for holding the mobile terminal 10 is provided. This makes it easier for the weight of the mobile terminal 10 to be applied to the power receiving terminal 21 when placed, so that contact pressure for connecting the power receiving terminal 21 and the power feeding terminal 51 can be easily secured.

Note that the both end side recesses 22 are not limited to being formed so as to open along the longitudinal direction of the gripping part 13 as described above, and for example, as a first modification of the present embodiment, as shown in FIG. 7(A). It may be formed to open along the direction illustrated in (B). In this case, the holding part 42 of the charging device 40 is formed to hold the mobile terminal 10 from the lower end part 14 side along the opening direction of the terminal side recess 22, and both device side convex parts 52 are It is formed so as to fit into the terminal side recess 22 of the placed mobile terminal 10. Even in this case, the above effects can be achieved.

In addition, as a second modification of the present embodiment, as illustrated in FIG. 8A, even if the casing of the mobile terminal 10 is formed as a gun grip type, both terminals are attached to the protruding portion of the lower end 14a. Providing the side recess 22 achieves the above effects. Furthermore, as illustrated in FIG. 8(B), the above effect can be achieved even if the terminal side recess 22 is provided in a portion of the lower end 14a that does not protrude in a portion that is not normally gripped.

[Second embodiment]
Next, a charging system according to a second embodiment of the present invention will be described with reference to the drawings.
The second embodiment is mainly different from the first embodiment in that the power receiving terminal 21 and the power feeding terminal 51 are configured to be replaceable together with the terminal side recess 22 and the device side convex portion 52. Therefore, components that are substantially the same as those in the first embodiment are designated by the same reference numerals, and their descriptions will be omitted.

When using a power storage device such as a capacitor that emphasizes charging speed by instantaneously charging a large current, it is possible to charge the mobile terminal 10 each time it is used without increasing its charging capacity too much. There may be cases. In this type of operation, charging is repeated at a high frequency, and the number of times the power receiving terminal 21 and the power feeding terminal 51 come into contact with each other increases, leading to progressive wear on each terminal, and depending on the state of wear, contact may occur. There is a risk of the product becoming defective.

Therefore, in this embodiment, as shown in FIGS. 9A and 9B, the housing 11 of the mobile terminal 10 has a terminal side base 11a in which the circuit board 30 is accommodated and a terminal side in which the terminal side recess 22 is provided. The terminal side base portion 11a and the terminal side terminal portion 11b are configured to be attachable and detachable using a screw Sa. The terminal side base portion 11a is constituted by the reading portion 12, a part of the gripping portion 13, and a portion of the lower end portion 14, and the terminal side terminal portion 11b is constituted by the remainder of the gripping portion 13 and the remainder of the lower end portion 14. Ru. Note that the circuit board 30 may correspond to an example of a "terminal side board."

The circuit board 30 and the power receiving terminal 21 are connected using a connector 15a connected to the circuit board 30 via a wire 16a and a connector 15b connected to the power receiving terminal 21 via a wire 16b. , connected.

Thereby, even if the power receiving terminal 21 becomes worn, the power receiving terminal 21 can be replaced together with the terminal side terminal portion 11b, so that maintainability can be improved while ensuring safety.

Further, in this embodiment, as shown in FIG. 10, the housing 41 of the charging device 40 includes a device-side base portion 41a in which the circuit board 60 is accommodated and a device-side terminal portion 41b in which the device-side convex portion 52 is provided. In addition, the device-side base portion 41a and the device-side terminal portion 41b are configured to be detachable using screws Sb. Note that the circuit board 60 may correspond to an example of a "device-side board."

The circuit board 60 and the power supply terminal 51 are connected using a connector 45a mounted on the circuit board 60 and a connector 45b connected to the power supply terminal 51 via the wire 46.

Thereby, even if the power supply terminal 51 becomes worn, the power supply terminal 51 can be replaced together with the device side terminal portion 41b, so that maintainability can be improved while ensuring safety.

In the mobile terminal 10 according to the first modification of the present embodiment, the terminal side base portion 11a and the terminal side terminal portion 11b are formed by engaging an engaging portion provided on one side with an engaged portion provided on the other side. It may be configured to be detachable. For example, as shown in FIGS. 11(A) and 11(B), by engaging the claw 17b provided on the terminal side terminal portion 11b with the recess 17a provided on the terminal side base 11a, the terminal side base 11a and the terminal side terminal The portion 11b can be configured to be detachable.

As the charging device 40 in the first modification of the present embodiment, the device-side base portion 41a and the device-side terminal portion 41b are configured such that the engaging portion provided on one side and the engaged portion provided on the other side are engaged with each other. It may be configured to be detachable. For example, as shown in FIG. 12, by engaging the claw 47b provided on the device side terminal portion 41b with the engaged portion 47a provided on the device side terminal portion 41b, the device side base portion 41a and the device side terminal portion 41b are connected to each other. can be configured to be detachable.

In addition, as a second modification example of the mobile terminal 10 of the present embodiment, as shown in FIGS. It may also be configured to be detachable. Similarly, as a second modification of the charging device 40 of the present embodiment, as shown in FIG. may be done.

Note that the characteristic configuration of this embodiment, in which the power receiving terminal 21 and the power feeding terminal 51 are replaceable together with the terminal side recess 22 and the device side convex portion 52, can be applied to other embodiments.

[Third embodiment]
Next, a charging system according to a third embodiment of the present invention will be described with reference to the drawings.
In the third embodiment, the circuit board 30 and the power receiving terminal 21 are connected by simply attaching the terminal side base 11a and the terminal side terminal section 11b, and only by attaching the device side base 41a and the device side terminal section 41b. The main difference from the second embodiment is that the circuit board 60 and the power supply terminal 51 are connected at . Therefore, components that are substantially the same as those in the second embodiment are designated by the same reference numerals, and their descriptions will be omitted.

In the mobile terminal 10 according to the present embodiment, as shown in FIGS. 15(A) and 15(B), a relay terminal 19b connected to the power receiving terminal 21 is provided in the terminal side terminal portion 11b, and this relay terminal 19b is , is arranged so as to be connected to a predetermined electrode 19a provided on the circuit board 30 when the terminal side terminal portion 11b is assembled to the terminal side base portion 11a. That is, by connecting the predetermined electrode 19a provided on the circuit board 30 to the relay terminal 19b provided on the terminal side terminal portion 11b, the circuit board 30 can receive power via the power receiving terminal 21, and the terminal side terminal portion 11b is formed so that the relay terminal 19b comes into contact with a predetermined electrode 19a when attached to the terminal side base 11a.

As a result, the circuit board 30 is connected to the power receiving terminal 21 by simply attaching the terminal side terminal portion 11b to the terminal side base 11a, so there is no need to employ a connector or the like to connect the circuit board 30 and the power receiving terminal 21. Therefore, the replacement work efficiency can be improved. Note that the circuit board 30 or the like may be provided with an elastically deformable terminal interposed between the predetermined electrode 19a and the relay terminal 19b to electrically connect them.

Furthermore, in the charging device 40 according to the present embodiment, as shown in FIG. It is arranged so as to be connected to a predetermined electrode 49a provided on the circuit board 60 when the portion 41b is assembled to the device side base portion 41a. That is, by connecting the predetermined electrode 49a provided on the circuit board 60 to the relay terminal 49b provided on the device side terminal portion 41b, the circuit board 60 can be powered via the power supply terminal 51, and the device side terminal portion 41b is formed such that the relay terminal 49b comes into contact with a predetermined electrode 49a when attached to the device side base 41a.

As a result, the circuit board 60 is connected to the power supply terminal 51 simply by attaching the device side terminal portion 41b to the device side base 41a, so there is no need to employ a connector or the like to connect the circuit board 60 and the power supply terminal 51. Therefore, the replacement work efficiency can be improved. Note that the circuit board 60 or the like may be provided with an elastically deformable terminal that is interposed between the predetermined electrode 49a and the relay terminal 49b and electrically connects them.

Note that the circuit board 30 and the power receiving terminal 21 are connected simply by attaching the terminal side base 11a and the terminal side terminal section 11b, and the circuit board 60 and the power receiving terminal 21 are connected only by attaching the device side base 41a and the device side terminal section 41b. The characteristic configuration of this embodiment etc. in which the power supply terminal 51 is connected can be applied to other embodiments etc.

[Fourth embodiment]
Next, a charging system according to a fourth embodiment of the present invention will be described with reference to the drawings.
The fourth embodiment differs from the first embodiment mainly in that at least one of the power receiving terminal 21 and the power feeding terminal 51 is formed as a terminal that can be elastically deformed when connected. Therefore, components that are substantially the same as those in the first embodiment are designated by the same reference numerals, and their descriptions will be omitted.

In the mobile terminal 10 according to the present embodiment, the power receiving terminal 21 is formed as a terminal that can be elastically deformed when connected. As shown in FIGS. 17(A) and 17(B), the terminal-side recess 22 of the mobile terminal 10 and the device-side protrusion 52 of the charging device 40 are arranged so that the device-side protrusion 52 is inserted into the terminal-side recess 22. The protective portion 53 is formed so as to come into contact with the bottom surface 22a when the power receiving terminal 21 and the power feeding terminal 51 are connected. Note that the protection portion 53 and the bottom surface 22a may correspond to an example of a “contact portion” that comes into contact with each other when the power receiving terminal 21 and the power feeding terminal 51 are connected.

As a result, even if there are variations in the arrangement of the power receiving terminals 21 in the mobile terminal 10 or the arrangement of the power feeding terminals 51 in the charging device 40, the elastically deformed power receiving terminals 21 can follow the power feeding terminals 51. It becomes easier to press. Therefore, the contact pressure for connecting the power receiving terminal 21 and the power feeding terminal 51 can be easily ensured, and the power receiving terminal 21 and the power feeding terminal 51 can be reliably connected when placed.

In particular, when the device-side convex portion 52 is inserted into the terminal-side recess 22 and the power receiving terminal 21 and the power feeding terminal 51 are connected, the protective portion 53 and the bottom surface 22a come into contact, so that the elastically deformed power receiving terminal 21 feeds power. Since the pressing force when pressing the terminal 51 can be controlled according to the contact position, damage to the terminal due to excessive contact pressure (pressure) can be prevented.

Note that it is not limited to the case where only the power receiving terminal 21 is formed to be elastically deformable when connected, but only the power feeding terminal 51 may be formed to be elastically deformable when connected, or both the power receiving terminal 21 and the power feeding terminal 51 are formed to be elastically deformable when connected. Sometimes, it may be formed to be elastically deformable.

Furthermore, the characteristic configuration of this embodiment, in which at least one of the power receiving terminal 21 and the power feeding terminal 51 is formed as a terminal that can be elastically deformed during connection, can be applied to other embodiments.

[Fifth embodiment]
Next, a charging system according to a fifth embodiment of the present invention will be described with reference to the drawings.
The fifth embodiment differs from the first embodiment mainly in that the power supply terminal of the charging device 40 is formed to be detachable from the opposing surface of the convex portion. Therefore, components that are substantially the same as those in the first embodiment are designated by the same reference numerals, and their descriptions will be omitted.

In the charging device 40 according to the present embodiment, instead of the power supply terminal 51, the device side convex part 52, and the protection part 53, the power supply terminal 71, the convex part 72, and the protection part 73 shown in FIGS. It has been adopted. The protection part 73 includes a main body part 73a located above the opposing surface 72a of the convex part 72, and a connecting part 73b that integrally connects one end side (the right side in FIG. 18) of the main body part 73a and the convex part 72. The main body portion 73a is formed such that its other end is elastically displaceable in the vertical direction starting from the connecting portion 73b.

The connecting portion 73b is formed such that the distance between the lower surface of the main body portion 73a and the opposing surface 72a substantially matches the thickness of the power feeding terminal 71. The main body part 73a is formed so that a substantially circular opening 73c penetrating in the vertical direction communicates with a slit 73d on the other end side, and is inserted between the lower surface of the main body part 73a and the opposing surface 72a. A claw 73e for holding the power supply terminal 71 is formed below the other end. The thickness of the main body portion 73a is approximately the depth h2 of the protection portion 53 described above, and the diameter of the opening 73c is set to approximately the inner diameter D2 of the protection portion 53 described above.

The opposing surface 72a of the convex portion 72 has a relay terminal 72b for connecting the power feeding terminal 71 and the circuit board 60 by contacting the lower surface of the power feeding terminal 71 inserted between the lower surface of the main body portion 73a. It is located.

In the charging device 40 configured in this manner, the power supply terminal 71 is inserted between the lower surface of the main body part 73a and the opposing surface 72a by pushing up the claw 73e with respect to the protection part 73. It is arranged on the opposing surface 72a of the convex portion 72. In this arrangement, the power supply terminal 71 is connected to the circuit board 60 via the relay terminal 72b, and is protected by the main body portion 73a while being exposed through the opening 73c. Further, the claw 73e functions as a snap fit to hold the power supply terminal 71 against the opposing surface 72a. This makes it difficult for the user's fingers or the like to touch the power supply terminal 71, as in the first embodiment, and it is possible to ensure safety against electric shocks and the like. Furthermore, the slit 73d makes it easier to sweep out dust and the like on the power supply terminal 71.

When the power supply terminal 71 has progressed to wear, the power supply terminal 71 can be taken out from between the lower surface of the main body portion 73a and the opposing surface 72a by pushing up the claw 73e. In this way, the power supply terminal 71 that has become worn out can be easily replaced, so that poor contact caused by terminal wear can be suppressed.

Note that as a first modification of the present embodiment, a protection part 74 as illustrated in FIGS. 19(A) and 19(B) may be employed instead of the protection part 73 described above. The protection part 74 is formed to include a hook part 74a for hooking one end side (the right side in FIG. 19) of the power supply terminal 71, and two wall parts 74b arranged to face each other with the power supply terminal 71 interposed therebetween. . Both wall portions 74b are formed so that the height from the opposing surface 72a is higher than the power supply terminal 71 by about the depth h2 described above. Further, the facing distance of both wall portions 74b is approximately equal to the width of the power feeding terminal 71, and when the power feeding terminal 71 whose one end side is hooked on the hook portion 74a is pushed down onto the opposing surface 72a, the distance between the two wall portions 74b is The lower surface of the power supply terminal 71 sandwiched therebetween is formed so as to contact the relay terminal 72b on the opposing surface 72a. In particular, in this embodiment, the power supply terminal 71 is fixed to the opposing surface 72a with double-sided tape 72c or the like that is attached to the opposing surface 72a so as to avoid the relay terminal 72b. Even in this case, the power supply terminal 71 that has become worn out can be easily replaced, so that poor contact caused by terminal wear can be suppressed. Moreover, even if the power supply terminal 71 is protected by the protection part 74, dust and the like on the power supply terminal 71 can be swept out to the other end side.

Further, as a second modification of the present embodiment, the power supply terminal 71 may be fixed using a screw Sc inserted through a through hole provided in the power supply terminal 71. Specifically, in place of the protection part 73 described above, a protection part 75 as illustrated in FIGS. 20(A) and 20(B) may be employed. The protection part 75 includes a main body part 75a located above the facing surface 72a of the convex part 72, and a connecting part 75b that integrally connects one end side (left side in FIG. 20) of the main body part 75a and the convex part 72. It is formed like this. The main body portion 75a is formed in a substantially C-shape so as to open from the other end toward the center. The connecting portion 75b is formed such that the distance between the lower surface of the main body portion 75a and the opposing surface 72a substantially matches the thickness of the power feeding terminal 71. Then, the power supply terminal 71 is inserted between the lower surface of the main body part 75a and the opposing surface 72a, and the screw Sc inserted into the through hole of the power supply terminal 71 from the main body part 75a side is fastened to the opposing surface 72a. The terminal 71 is fixed to the opposing surface 72a so as to be in contact with the relay terminal 72b. An insulating spacer Sd is assembled into the through hole of the power supply terminal 71. Even in this case, the power supply terminal 71 that has become worn out can be easily replaced, so that poor contact caused by terminal wear can be suppressed. Moreover, even if the power supply terminal 71 is protected by the protection part 75, dust and the like on the power supply terminal 71 can be swept out to the other end side.

Furthermore, as a third modification of the present embodiment, a protection part 76 and a power supply terminal 71a as illustrated in FIGS. good. The protection portion 76 is formed to include a pair of wall portions 76a and a connecting portion 76b that connects the lower central portions of both wall portions 76a and into which the power supply terminal 71a is fitted. Both wall portions 76a are formed such that the distance between their upper surfaces and the upper surface of the power supply terminal 71a fitted into the connecting portion 76b is approximately the depth h2 of the protection portion 53 described above. A pair of concave portions are formed below the connecting portion 76b, and the pair of convex portions 71b of the fitted power supply terminal 71a engage with each other so as to face each other. It is fixed to the opposing surface 72a so as to be in contact with the terminal 72b. Even in this case, a worn power supply terminal 71a can be easily replaced, so that poor contact caused by terminal wear can be suppressed. Furthermore, even if the power supply terminal 71 is protected by the pair of walls 76a, dust and the like on the power supply terminal 71 can be swept outward from between the two walls 76a.

Note that the characteristic configuration of this embodiment, in which the power supply terminal of the charging device 40 is removably formed on the opposing surface of the convex portion, can be applied to other embodiments. Further, the power receiving terminal 21 of the mobile terminal 10 may also be formed to be detachable from the bottom surface 22a of the terminal side recess 22, etc.

[Sixth embodiment]
Next, a charging system according to a sixth embodiment of the present invention will be described with reference to the drawings.
The sixth embodiment is different from the first embodiment in that the power feeding terminal is arranged in the device side recess, and the power receiving terminal is arranged on the opposite surface of the terminal side protrusion that enters the device side recess when placed. Mainly different. Therefore, components that are substantially the same as those in the first embodiment are designated by the same reference numerals, and their descriptions will be omitted.

As shown in FIG. 22, the charging system 1a according to this embodiment includes a mobile terminal 10a and a charging device 40a. The mobile terminal 10a is configured so that a terminal-side protrusion 25 is provided in place of the terminal-side recess 22 compared to the mobile terminal 10 in the first embodiment. The charging device 40a is configured such that a device-side recess 55 is provided in place of the device-side convex portion 52 in the charging device 40 in the first embodiment. The power supply terminal 51 is arranged within the device side recess 55. The power receiving terminal 21 is arranged on the opposing surface 25a of the terminal side convex part 25 that faces the power feeding terminal 51 when placed, and the terminal side convex part 25 has a part that protects the power receiving terminal 21 from the surroundings and is placed on the opposite surface 25a of the terminal side convex part 25 that faces the power feeding terminal 51. A protective portion 26 having a high height from the opposing surface is provided.

In this way, the power supply terminal 51 of the charging device 40a is arranged in the device side recess 55, and the power receiving terminal 21 of the mobile terminal 10a is protected from the surroundings by the protection part 26 provided in the terminal side convex part 25. Similar to the first embodiment and the like, the user's fingers or the like are less likely to touch the power receiving terminal 21 of the mobile terminal 10a or the power feeding terminal 51 of the charging device 40a, and safety with respect to electric shocks and the like can be ensured.

The characteristic configuration of this embodiment is that the power feeding terminal 51 is arranged in the device side recess 55, and the power receiving terminal 21 is arranged on the opposing surface 25a of the terminal side convex part 25 that enters the device side recess 55 when placed. , and other embodiments. For example, as illustrated in FIG. 23, even if the casing of the mobile terminal 10a is formed as a gun grip type, the above effect can be achieved by providing both terminal side protrusions 25 on the lower end 14a. Further, for example, as in the second embodiment, the power receiving terminal 21 and the power feeding terminal 51 can be replaced together with the terminal side protrusion 25 and the device side recess 55. Further, for example, as in the third embodiment, the circuit board 30 and the power receiving terminal 21 of the terminal side convex part 25 are connected by just mounting, and the circuit board 60 and the power feeding terminal in the device side concave part 55 are connected. 51 can be connected. Further, for example, as in the fourth embodiment, at least one of the power receiving terminal 21 of the terminal side convex portion 25 and the power feeding terminal 51 in the device side recess 55 may be formed as a terminal that can be elastically deformed at the time of connection. Can be done. Further, for example, as in the fifth embodiment, the power receiving terminal 21 can be formed to be detachable from the opposing surface 25a of the terminal side convex portion 25. Similarly, the power supply terminal 51 can be formed to be detachable from the bottom surface of the device side recess 55 or the like.

[Seventh embodiment]
Next, a charging system according to a seventh embodiment of the present invention will be described with reference to the drawings.
The seventh embodiment differs from the first embodiment in that the charging state and the non-charging state are switched depending on the resistance value between the power supply terminals 51. Therefore, components that are substantially the same as those in the first embodiment are designated by the same reference numerals, and their descriptions will be omitted.

Even if the configuration of each embodiment described above makes it difficult for the user's fingers to touch the pair of power supply terminals 51 of the charging device 40, relatively small conductive foreign objects etc. may come into contact with. In such a case, it is necessary to prevent a state in which a large current flows in response to power supply from the capacitor 66 of the charging device 40 via the power supply terminal 51. There are fuses and the like to stop the supply when a large current flows, but it also becomes impossible to momentarily supply power to the capacitor 38 of the mobile terminal 10. Furthermore, it is necessary to limit the power supply to a range where fuses and the like do not operate.

Therefore, as shown in FIG. 24, the power supply control unit 65 of the charging device 40b according to the present embodiment opens and closes the connection between the capacitor 66 and the capacitor 38 via the pair of power supply terminals 51 and the pair of power reception terminals 21. It is configured to include a switching element 80 for controlling the switching element 80 to open the switching element 80, and a control circuit 90 that performs a charging process of charging the capacitor 38 using the power from the capacitor 66 by controlling the switching element 80 to an open state. Note that in FIG. 24, illustration of the control unit 61 and the like is omitted for convenience.

In the charging process using the power from the capacitor 66, the switching element 80 is controlled to be open by the control circuit 90, and a large current flows through the power supply terminal 51, so that the charging time for charging the capacitor 38 is shortened. Fast charging is achieved. Note that the capacitor 38 may correspond to an example of a "terminal-side capacitor," and the capacitor 66 may correspond to an example of a "device-side capacitor."

On the other hand, in the present embodiment, when a conductive object different from the charging target (for example, a metal, a human body, a foreign object having a resistance component such as a liquid, etc.) comes into contact between the pair of power supply terminals 51, the control circuit 90 By controlling the switching element 80 to the closed state, control is performed so that a large current does not flow through the power supply terminal 51.

For this reason, the control circuit 90 is configured to include an operational amplifier 91 whose output terminal is connected to the switching element 80, a first resistor 92, a second resistor 93, a third resistor 94, etc., as shown in FIG. There is. The first resistor 92 and the second resistor 93 have the same resistance value and are connected in series between a predetermined power source B and GND. The third resistor 94 has a larger resistance value than the first resistor 92 and the second resistor 93, and is connected between the power source B and one of the power supply terminals 51. Note that the other power supply terminal 51 is connected to GND.

The operational amplifier 91 has an inverting input terminal (-input terminal) connected between a first resistor 92 and a second resistor 93, and a non-inverting input terminal (+input terminal) connected to one power supply terminal 51.

With this configuration, when a resistance component is not detected between the pair of power supply terminals 51, the voltage at the non-inverting input terminal of the operational amplifier 91 becomes higher than the voltage at the inverting input terminal, so the operational amplifier 91 The switching element 80 is controlled to be in an open state according to the output from the switch. That is, the control circuit 90 functions to control the switching element 80 to open when the resistance value of an object that comes into contact between the pair of power supply terminals 51 is equal to or less than a predetermined threshold value of approximately 0. Therefore, when the mobile terminal 10 is placed on the charging device 40b and the power reception terminal 21 is connected to the power supply terminal 51, the capacitor 66 and the capacitor 38 are connected, so that the pair of power supply terminals 51 The switching element 80 is controlled to be in the open state and enters the charging state without substantially detecting any resistance component in between, and the above-mentioned charging process is started.

On the other hand, when a predetermined resistance component (a resistance component exceeding a predetermined resistance value determined according to each resistor 92 to 94) is detected between the pair of power supply terminals 51, the voltage at the non-inverting input terminal of the operational amplifier 91 is detected. Since the voltage becomes smaller than the voltage at the inverting input terminal, no output is made from the operational amplifier 91, and the switching element 80 is controlled to be in the closed state. That is, the control circuit 90 functions to control the switching element 80 to the closed state when the resistance value of the object that comes into contact between the pair of power supply terminals 51 exceeds the predetermined threshold value. Therefore, when a conductive foreign object or the like comes into contact between the pair of power supply terminals 51, a resistance component (a resistance component exceeding the above-mentioned predetermined resistance value) is detected between the pair of power supply terminals 51. The switching element 80 is controlled to be in a closed state and in a non-charging state, and the switching element 80 is controlled so that a large current does not flow through the power supply terminal 51. Note that the predetermined threshold value is set such that the resistance value of an object that comes into contact between the pair of power supply terminals 51 becomes a value at which connection with the power reception terminal 21 is assumed, and in this embodiment, for example, As mentioned above, it is set to approximately 0.

That is, the control circuit 90 opens the switching element 80 when it is determined that the power receiving terminal 21 is connected to the power feeding terminal 51 based on the resistance value of an object that contacts between the pair of power feeding terminals 51. When it is determined that an object different from the power receiving terminal 21 is in contact between the pair of power feeding terminals 51, the switching element 80 is controlled to be in a closed state to switch to a non-charging state. Function.

As described above, in this embodiment, the resistance value between the pair of power feeding terminals 51 when a conductive foreign object or the like comes into contact is higher than the resistance value between the pair of power feeding terminals 51 when the power receiving terminal 21 comes into contact with the pair of power feeding terminals 51. Taking advantage of the fact that By rapidly charging the capacitor 38 using the capacitor 66, the charging time can be shortened.

On the other hand, if the resistance value of the object that comes into contact between the pair of power supply terminals 51 exceeds the predetermined threshold value (when a resistance component is detected), an object that is different from the power reception terminal 21 between the pair of power supply terminals 51 By controlling the switching element 80 to be in a closed state, it is possible to rapidly prevent current from flowing through a conductive foreign object or the like that has come into contact between the pair of power supply terminals 51.

Note that the characteristic configuration of this embodiment in which the charging state and non-charging state are switched according to the resistance value between the power supply terminals 51 can be applied to other embodiments.

Note that the present invention is not limited to the above embodiments, and may be embodied as follows, for example.
(1) Note that the capacitor 38 is not limited to being used as the power storage device of the mobile terminals 10 and 10a, and a secondary battery such as a lithium ion battery or a nickel metal hydride battery may be used, for example. Similarly, the capacitor 66 is not limited to being employed as the power storage device of the charging devices 40, 40a, and the above-mentioned secondary battery or the like may be employed. Furthermore, in the present invention, a charging device for quick charging that does not include a power storage device such as a capacitor 66 or a secondary battery may be employed as the charging devices 40 and 40a.

(2) The pair of power receiving terminals 21 are not limited to being arranged in the respective terminal-side recesses 22, but may be arranged in one terminal-side recess. In this configuration, the above-described effects are achieved by forming one device-side convex portion in which the pair of power feeding terminals 51 are arranged side by side on opposing surfaces so as to be guided into the terminal-side concave portion.

(3) In a configuration in which the housing 11 is formed by assembling the terminal side base 11a and the terminal side terminal portion 11b, as in the second embodiment, etc., other parts are used instead of the terminal side terminal portion 11b. By assembling it to the side base 11a, it may be possible to switch to another model, for example, a model to which power is supplied via a cable. That is, the terminal side base portion 11a can be used in common.

1, 1a... Charging system 10, 10a... Mobile terminal 11... Housing (terminal side housing)
21... Power receiving terminal 22... Terminal side recessed part 25... Terminal side convex part 26... Protective part 30... Circuit board (terminal side board)
38...Capacitor (terminal side capacitor)
40, 40a, 40b... Charging device 41... Housing (device side housing)
42...Holding part 51...Power supply terminal 52...Device side convex part 52a...Opposing surface 53...Protection part 55...Terminal side recessed part 60...Circuit board (device side board)
66...Capacitor (device side capacitor)
80...Switching element 90...Control circuit

Claims (13)

A mobile device and
a charging device that charges the mobile terminal placed such that a power supply terminal is connected to a power reception terminal of the mobile terminal;
A charging system comprising:
The power receiving terminal is arranged in a terminal-side recess provided in a terminal-side casing forming an outer shell of the mobile terminal,
A device-side casing forming an outer shell of the charging device is provided with a device-side convex portion that enters into the terminal-side recess when placed;
The power feeding terminal is disposed on the opposing surface of the device side convex portion that faces the power receiving terminal during the placement,
The charging system is characterized in that the device-side convex portion is provided with a protection portion that protects the power supply terminal from the surroundings and has a higher height from the opposing surface than the power supply terminal. The terminal-side housing includes a terminal-side base portion in which the terminal-side board is accommodated, and a terminal-side terminal portion in which the terminal-side recess is provided, and the terminal-side base portion and the terminal-side terminal portion are configured to be detachable. The charging system according to claim 1, characterized in that: A predetermined electrode provided on the terminal side substrate is connected to a relay terminal provided on the terminal side terminal portion, so that the terminal side substrate can receive power via the power receiving terminal,
The charging system according to claim 2, wherein the terminal-side terminal portion is formed such that the relay terminal contacts the predetermined electrode when assembled to the terminal-side base. The device-side casing includes a device-side base portion in which a device-side board is housed, and a device-side terminal portion in which the device-side convex portion is provided, and the device-side base portion and the device-side terminal portion are detachable. The charging system according to claim 1, characterized in that: A predetermined electrode provided on the device side board is connected to a relay terminal provided in the device side terminal portion, so that the device side board can be powered via the power supply terminal,
5. The charging system according to claim 4, wherein the device-side terminal portion is formed such that the relay terminal comes into contact with the predetermined electrode when assembled to the device-side base. The charging system according to claim 1, wherein at least one of the power receiving terminal and the power feeding terminal is formed as a terminal that can be elastically deformed when connected. The terminal-side concave portion and the device-side convex portion are each provided with contact portions that come into contact with each other when the device-side convex portion is inserted into the terminal-side concave portion and the power receiving terminal and the power feeding terminal are connected. The charging system according to claim 6, characterized in that: The inner surface of the terminal side recess is formed to be inclined so that it becomes narrower toward the back,
The charging system according to claim 1, wherein the outer surface of the device-side convex portion is formed to be inclined so as to be guided by the inner surface of the terminal-side recess when the device side convex portion is placed. 2. The charging system according to claim 1, wherein the terminal-side recess is provided in a portion of the terminal-side casing that is different from a portion to be gripped. The charging system according to claim 1, wherein the power supply terminal is formed to be detachable from the opposing surface of the device-side convex portion. A pair of the power receiving terminal and the power feeding terminal are each provided,
2. The charging device according to claim 1, further comprising a holding part that holds the mobile terminal so that the center of gravity of the mobile terminal when placed is vertically projected between the pair of power supply terminals. Charging system as described. A mobile device and
a charging device that charges the mobile terminal placed such that a power supply terminal is connected to a power reception terminal of the mobile terminal;
A charging system comprising:
The power supply terminal is arranged in a device-side recess provided in a device-side casing forming an outer shell of the charging device,
A terminal-side casing forming an outer shell of the mobile terminal is provided with a terminal-side convex portion that enters the device-side recess when the mobile terminal is placed;
The power receiving terminal is arranged on the opposing surface of the terminal side convex portion that faces the power feeding terminal when placed,
The charging system is characterized in that the terminal-side convex portion is provided with a protection portion that protects the power receiving terminal from the surroundings and has a higher height from the opposing surface than the power receiving terminal. The mobile terminal is
Equipped with a terminal-side capacitor that functions as a power storage device,
The charging device includes:
a device-side capacitor that functions as a power storage device;
a switching element that opens and closes the connection between the device-side capacitor and the terminal-side capacitor via the pair of power feeding terminals and the pair of power receiving terminals;
a control circuit that performs a charging process of charging the terminal-side capacitor using power from the device-side capacitor by controlling the switching element to an open state;
Equipped with
The control circuit controls the switching element to be in an open state when a resistance value of an object that comes into contact between the pair of power supply terminals is equal to or less than a predetermined threshold value at which connection with the power reception terminal is assumed. The charging system according to claim 1 or 12, wherein the switching element is controlled to be in a closed state when a resistance value of an object that comes into contact between the power supply terminals exceeds the predetermined threshold value.

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