JP2003264934A - Non-contact charging system, charger, and charged equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure safety when metallic foreign matter is placed in proximity to a power transmission coil and appropriately charge a battery in accordance with the state of the battery to be charged. <P>SOLUTION: A placement portion on which a barcode reader 1 is to be set is formed on a charger 2, and the power transmission coil 8 to be electromagnetically coupled with a power reception coil 6 in the barcode reader 1 is installed under the placement portion. The charger 2 and the barcode reader 1 are provided with respective transmitting-receiving portions 11 and 13 which conduct two-way communication by light. The barcode reader 1 is provided with a capacity judging means which judges the capacity of a loaded secondary battery 4. The recognizing portion 12 of the charger 2 outputs a response request signal. When receiving the response request signal, the recognizing portion 14 of the barcode reader 1 transmits recognition information including battery capacity information to the charger 2. When receiving the recognition information, the charger 2 issues a command to and causes a charge control portion 9 to charge the secondary battery with charging current corresponding to the battery capacity information. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-contact type charging system, a charging device and a device to be charged which perform non-contact charging by electromagnetically coupling a power transmitting coil and a power receiving coil.

[0002]

2. Description of the Related Art In recent years, mobile devices such as mobile phones, which use a secondary battery such as a lithium-ion battery as a driving power source, have become widespread. For example, in Japanese Unexamined Patent Application Publication No. 2001-186676, it is considered to add a function as a charging device for a mobile phone to a notebook computer when the mobile phone is connected to a notebook computer for use. Shows a structure in which charging is performed without contact (non-contact) by electromagnetic coupling between a power transmission coil and a power reception coil.

[0003]

A device which is charged by a non-contact method, for example, a portable device such as a handy type bar code reader or a mobile phone, has a lithium ion on the base end side (lower end side) in the main body case. A secondary battery such as a battery, a charging circuit including a power receiving coil, a rectifying circuit, and the like are arranged. When the mobile device is not used, it is set (placed) on a charging device that also serves as a stand. In this case, the charging device has a concave mounting portion on the outer surface of the main body case, and is configured to include a power transmission coil, a charge control circuit, and the like in the main body case. With this, when the portable device is set in the mounting part, the power transmission coil is oscillated, and electric energy is transmitted by electromagnetic coupling with the power reception coil to perform non-contact charging of the secondary battery. is there.

By the way, in the above charging device, even if a metallic foreign object (an object that allows magnetic flux to pass) such as a coin is placed on the placing portion (in the vicinity of the power transmitting coil), the power transmitting coil oscillates. Therefore, there is a problem that the foreign metal particles generate heat and become high in temperature. Therefore, in order to prevent such metal foreign matter from being exothermically generated and improve safety, conventionally, a mounting portion is provided with a mechanical switch that is pressed by the set portable device, The power transmission coil is oscillated on condition that the switch is pressed. However, with this configuration, the mechanical switch is not always operated depending on the shape of the metallic foreign matter, etc., so that the reliability is inferior, and it cannot be said that it is sufficiently effective in terms of ensuring safety.

Incidentally, in recent years, the power consumption of portable devices has tended to increase with higher performance, and the performance of secondary batteries (capacity increase) is also advancing. Therefore, depending on the device, there is a case where the standard-installed secondary battery is replaced with a secondary battery having a larger capacity and used. However, if such secondary battery replacement is performed, the charging time by the charging device will be longer than in the standard case. In addition, depending on the mobile device, a secondary battery and a primary battery (dry battery) can be mounted in a replaceable manner, and a primary battery can be used instead of the secondary battery. If the power transmission coil of the charging device is oscillated in a state where the primary battery is attached, there is a risk that power is wasted and the primary battery is adversely affected. Under such circumstances, there is a demand for a charging device that can perform charging adapted to the state of the battery.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to ensure safety when a metallic foreign object is placed in the vicinity of a power transmission coil, and further, to provide a battery to be charged. (EN) Provided are a non-contact type charging system, a charging device, and a device to be charged, which are capable of performing appropriate charging according to the state.

[0007]

In order to achieve the above object, the non-contact type charging system according to claim 1 of the present invention is provided with a communication means for performing mutual communication between the device to be charged and the charging device, respectively. The device to be charged is configured to transmit the recognition information regarding the charging condition for the device to be charged to the charging device by the communication means, and the charging device is configured to transmit the recognition information to the charging device based on the recognition information received via the communication device. This is characterized in that a charging control means for controlling charging in the charging section is provided.

According to a seventh aspect of the present invention, there is provided a charging device, wherein communication means for performing non-contact communication with a device to be charged in a set state of the device to be charged, and communication means for receiving from the device to be charged. A charging control means for controlling charging in the charging section based on the recognition information regarding the charging condition is provided. The device to be charged according to claim 12 of the present invention is provided with a communication means for performing non-contact communication with the charging device when the charging device is set in the charging device, and the communication means receives a response request signal from the charging device. In this case, the feature is that the recognition information regarding the charging condition is transmitted.

According to this, when the charging target device is set in the charging device, the communication means transmits the recognition information from the charging target device to the charging device. It is possible to oscillate the power transmission coil after confirming that the proper device to be charged is set by the recognition information. Therefore, when the metallic foreign matter is placed in the vicinity of the power transmission coil, it is possible to prevent the power transmission coil from oscillating and the temperature of the metallic foreign matter from rising, and it is possible to ensure safety. Then, by including the information about the battery of the device to be charged in the recognition information, it is possible to perform the charging control according to the information, so that it is possible to perform the appropriate charging according to the state of the battery to be charged. Becomes

More specifically, the device to be charged is provided with a type discriminating means for discriminating the type of battery, and the recognition information transmitted to the charging device side includes the battery type information indicating the type of the battery. The charging control means of the charging device may be configured to execute charging on the condition that the battery type information is a secondary battery (inventions of claims 4, 9 and 13). Accordingly, it is possible to prevent the power transmission coil of the charging device from oscillating in the state where the primary battery is attached to the device to be charged instead of the secondary battery, and the power is not wasted.

Further, the device to be charged is provided with a capacity discriminating means for discriminating the capacity of the battery so that the recognition information transmitted to the charging device side includes the battery capacity information indicating the capacity of the battery, and The charging control means can be configured to control charging with a charging current having a magnitude corresponding to the battery capacity information (the invention of claims 5, 10 and 14). According to this, when replaced with a battery with a large capacity,
By performing control such that the charging current is increased accordingly, it is possible to prevent the charging time from being excessively long.

Further, the charging target device is provided with a remaining amount discriminating means for discriminating the remaining amount of the battery, and the battery remaining amount information indicating the remaining amount of the battery is included in the recognition information transmitted to the charging device side. In addition to being included, the charging control means of the charging device can be configured to control charging with a charging current having a magnitude according to the battery remaining amount information (inventions of claims 6, 11, and 15). According to this, by performing control such that the charging current is increased or decreased according to the remaining battery level, efficient charging can be performed and the charging time can be shortened.

By the way, in the charging system of the present invention, since the charging is performed in a non-contact (contactless) manner, the communication between the charging device and the equipment to be charged by the communication means is
It is desirable to be contactless and this communication will be very close. Therefore, non-contact two-way communication by light or electromagnetic induction can be adopted as the communication means (the invention of claim 2), and a relatively simple structure can be achieved.

Then, the charging device is configured to output the response request signal at a predetermined time interval by the communication means, and to be configured to perform charging in a unit of a fixed time longer than the predetermined time interval. It is possible (inventions of claims 3 and 8). According to this, since the charging control means continues charging after outputting the response request signal and receiving the recognition information, at least until the next response request signal is output, the device to be charged is set in the charging device. As long as it is necessary to charge the battery, it is possible to continuously charge the battery without leaving any marks.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. In this example,
The present invention is applied to a bar code reader (bar code handy terminal) which is a handy type optical information reader as a device to be charged. FIG. 1 schematically shows an electrical configuration of a non-contact type charging system according to this embodiment. This system includes a bar code reader 1 as a device to be charged and a stand for the bar code reader 1. The non-contact type charging device 2 which is also used is provided.

Although not shown in detail, the bar code reader 1 is for reading a bar code at the tip of a vertically long body case 3 (only a part of the base end is shown in FIG. 2) that can be held by hand. There is a reading port for the main body case 3
The surface of the device is provided with, for example, a display unit including an LCD, a key operation unit, a trigger switch, and the like. Further, inside the front end side of the main body case 3, a reading mechanism for reading a barcode is provided, which includes an illuminating device, a CCD sensor, an imaging lens, a reflecting mirror, and the like. Further, in the main body case 3, there is also provided a control device mainly composed of a microcomputer for controlling the whole and for processing (decoding processing) of image data from the reading mechanism and storing.

Then, as shown in FIG. 1, the main body case 3
A rechargeable battery 4 such as a lithium-ion battery serving as a drive power source for the barcode reader 1 is provided therein, and a rectifier circuit, a charge control circuit, etc. for charging the rechargeable battery 4 are also provided. The charging unit 5 and the power receiving coil 6 are provided. As shown in FIG. 2, the power receiving coil 6 is arranged at the base end (lower end) in the main body case 3. In this embodiment, the secondary battery 4 has a capacity of, for example, 500 mAh as standard equipment, but some users have a larger capacity (1000 mAh) for long-term use. Will be transferred to.

The charging section 5 is adapted to charge the secondary battery 4 by a constant current / constant voltage method. In this method, the charging current is controlled to be a constant value until the secondary battery 4 reaches the full charge voltage, and after reaching the full charge voltage, the charging current converges (decreases) to a predetermined convergence value. Until it does, it switches to constant voltage charging. At this time, as will be described later, in the present embodiment, in the constant current charging control, the charging current is controlled according to the capacity of the secondary battery 4.

On the other hand, the charging device 2 according to this embodiment
Is configured by disposing the power transmission coil 8, the charge control unit 9 and the like in the case 7 (see FIG. 2). At this time, as shown in FIG. 2, a concave mounting portion 10 on which the barcode reader 1 is detachably set is provided on the upper surface of the case 7, and the power transmission coil 8 is mounted on the mounting portion 10. It is arranged immediately below the portion 10. As shown in FIG. 2, the barcode reader 1 is vertically set on the mounting portion 10 so that the lower end portion of the body case 3 is inserted, and in the set state, the power transmission coil 8 and the barcode are set. The power receiving coil 6 of the reader 1 is positioned so as to closely face and oppose, so that they are electromagnetically coupled.

The charging control unit 9 of the charging device 2 is
It is configured to include a rectifier circuit, an inverter circuit, a microcomputer, etc., and is connected to a commercial power supply (not shown). The charging control unit 9 is configured to supply a predetermined electric power to the power transmission coil 8 to cause it to oscillate, thereby transmitting electric energy by electromagnetic coupling between the power transmission coil 8 and the power receiving coil 6. Thus, the non-contact charging of the secondary battery 4 is performed. At this time, the charging control unit 9 can control the power supplied to the power transmission coil 8 and thus can control (increase / decrease) the charging current.

As shown in FIGS. 1 and 2, the charging device 2 is provided with a transmitting / receiving section 11 as a communication means, and a recognizing section 12 connected to the transmitting / receiving section 11.
Is provided. Along with this, the barcode reader 1 is also provided with a transmission / reception unit 13 as a communication means and a recognition unit 14 connected to the transmission / reception unit 13. The transmitter / receiver 11 and the transmitter / receiver 13 are in a set state of the barcode reader 1 with respect to the charging device 2,
It is provided so that non-contact bidirectional communication can be performed between them.

More specifically, in the present embodiment, a method of performing the communication by light is adopted, and as shown in FIG. 2, the transmitting / receiving section 13 is a lower part of the main body case 3 of the bar code reader 1. A light projecting portion 13a and a light receiving portion 13b are vertically arranged side by side on the rear surface portion. On the other hand, the transmitter / receiver 11 is provided on a wall surface portion (a portion facing the light transmitter / receiver portion 13) of the mounting portion 10 in the case 7 of the charging device 2.
The light receiving part 11a and the light projecting part 11b are vertically arranged side by side. Thus, the light emitted from the light projecting unit 13a is received by the light receiving unit 11a, and the light emitted from the light projecting unit 11b is received by the light receiving unit 13b, whereby bidirectional optical communication is performed. ing.

The recognition unit 12 of the charging device 2 is configured to include a microcomputer and the like, executes communication control of the transmission / reception unit 11, analyzes and recognizes received data, and further gives a command signal to the charging control unit 9. It is like this. The recognition unit 14 of the bar code reader 1 is also configured to include a microcomputer and the like, and is configured to execute communication control of the transmission / reception unit 13 and analysis and recognition of received data. Further, in this embodiment, the bar code reader 1 is provided with a capacity discriminating means for discriminating the capacity of the mounted secondary battery 4.
The data (battery capacity information) is given to the recognition unit 14.

At this time, the recognition unit 12 of the charging device 2 is
In normal times, the transmission / reception unit 11 outputs a response request signal (confirmation command) at predetermined time intervals. On the other hand, the recognition unit 1 of the barcode reader 1
When the transmitter / receiver 13 receives the response request signal, the transmitter / receiver 13 transmits the recognition information (response command) regarding the charging condition to the charging device 2. In the present embodiment, this recognition information includes the capacity of the secondary battery 4 (500 mAh or 1000 m in this case).
The battery capacity information indicating Ah) is included.

When the recognition section 12 of the charging device 2 receives the recognition information (response command) from the bar code reader 1 by the transmission / reception section 11, the recognition section 12 recognizes that the bar code reader 1 is set and charges the battery. The control section 9 is instructed to execute charging. Along with this, the recognition unit 12 gives a command to the charging control unit 9 to be a charging current according to the battery capacity information, and the charging control unit 9 controls the power supply to the power transmission coil 8 according to the command, and It is designed to control the charging current.

Specifically, the capacity of the secondary battery 4 is standard (5
00 mAh), the charging current is set to the standard value (50
0 mA) and the capacity of the secondary battery 4 is large (1000 m
In the case of Ah), the charging current is increased (1000 mA). Therefore, the recognition control unit is composed of the recognition unit 12 and the charging control unit 9. still,
The charging device 2 outputs the response request signal at a predetermined time interval as described above, but the charging device 2 is configured to perform charging in units of a fixed time longer than the predetermined time interval.

Next, the operation of the above structure will be described with reference to FIGS. Now, in order to charge the secondary battery 4 of the barcode reader 1, the user, as shown in FIG.
The barcode reader 1 is set on the mounting portion 10 of the charging device 2. Then, the power transmitting coil 8 and the power receiving coil 6 are brought into a state in which they can be electromagnetically coupled to each other, and the transmitter / receiver 11 and the transmitter / receiver 1
3 and 3 are opposed to each other and communication is possible. Then, on the charging device 2 side, processing such as charging control is executed according to the procedure shown in the flowchart of FIG. 3, and on the barcode reader 1 side, processing such as charging control is carried out according to the procedure shown in the flowchart of FIG. To be executed.

That is, as shown in FIG. 3, in the charging device 2, when the power is turned on (step S1), the response request signal (confirmation command) is always output from the transmitter / receiver 11 at a predetermined time interval. (Step S2). Then, the reception of the recognition information (response command) from the barcode reader 1 (transmission / reception unit 13) is waited (step S3), and when the recognition information is received (Yes in step S3), the battery capacity information included in the recognition information is received. Is checked (step S
4).

This battery capacity information indicates whether the battery capacity flag C is 0 or 1, and whether the battery capacity is standard (500 mAh) or a large replacement (1000 mAh). If it is 0 (No in step S4), the charging current is set to the standard (500 mA) (step S5), and the battery capacity flag C is set to 1.
In this case (Yes in step S4), the charging current is set to increase (1000 mA) (step S6).

After that, the charging operation is started, and the power transmission coil 8 is excited (oscillated) with the electric power according to the above setting (step S7). In this way, the charging device 2 can oscillate the power transmission coil 8 after confirming that the barcode reader 1 is set on the placing part 10, and when a metal foreign object such as a coin is placed, for example. Therefore, the power transmission coil 8 is no longer oscillated. Although not shown, when the notification that the charging of the secondary battery 4 is completed is received from the barcode reader 1 side,
Alternatively, the charging operation (oscillation of the power transmission coil 8) is terminated when the barcode reader 1 is removed from the mounting unit 10 (when there is no response).

On the other hand, as shown in FIG. 4, the bar code reader 1 is normally in a command reception waiting state (step S11), and the bar code reader 1 is placed on the charging device 2 by the user. When set in the unit 10 (step S12), the charging device 2 (transmission / reception unit 1
The response request signal (confirmation command) from 1) is received (Yes in step S13).

Next, the battery capacity of the secondary battery 4 is checked (step S14), and the battery capacity is standard (500).
mAh) (No in step S14),
The battery capacity flag C is set to 0 (step S15), and when the battery capacity is changed to a large capacity (1000 mAh) (Yes in step S14), the battery capacity flag C is set to 1 (step S16). . Then, the recognition information (response command) including the data of the battery capacity flag C (battery capacity information) is transmitted to the charging device 2 (step S17).

After that, as described above, electric energy is transmitted from the charging device 2 to the power receiving coil 6 by electromagnetic coupling, and the secondary battery 4 is charged by the charging unit 5 (step S18). At this time, the charging device 2 (power transmission coil 8) supplies electric power of a magnitude corresponding to the battery capacity of the secondary battery 4, and the charging unit 5 causes the secondary battery 4 to operate.
Charging is performed with a charging current according to the capacity of the. That is, when the capacity of the secondary battery 4 is standard (500 mAh), the charging current value is 500 mA and the capacity is 1000 mA.
When h, the charging current value is set to 1000 mA. As a result, charging is performed according to the secondary battery 4 to be charged, and when the secondary battery 4 having a large capacity is replaced, the charging time is prevented from being excessively long. You can do it.

As described above, according to this embodiment, the transmission / reception unit 1
By the communication between 1 and 13, the charging device 2 can oscillate the power transmission coil 8 after confirming that the barcode reader 1 is set, and therefore, the power transmission coil 8
When the metallic foreign matter is placed in the vicinity of, the power transmission coil 8 is prevented from oscillating and the temperature of the metallic foreign matter rises as in the conventional case, and safety can be ensured. Since the recognition information transmitted from the barcode reader 1 includes the battery capacity information regarding the secondary battery 4, the charging control can be performed with the charging current according to the information, and as a result, the charging should be performed. This has an excellent effect that it is possible to perform appropriate charging according to the state of the secondary battery 4.

In the above embodiment, the case in which the battery capacity information is included as the information regarding the charging condition of the charged device to be included in the recognition information has been described, but the type determination for determining the type of the battery in the charged device is described. A means may be provided so that the recognition information may include the battery type information, and the charging device may perform the charging on the condition that the battery type information is the secondary battery. Thus, when the device to be charged is equipped with the primary battery instead of the secondary battery, the power transmission coil can be prevented from oscillating, and the power is not wasted.

Further, the device to be charged is provided with a remaining amount discriminating means for discriminating the remaining amount (remaining capacity) of the battery, and the battery remaining amount information is included in the recognition information. The charging can be controlled by a charging current having a magnitude according to the information. As a result, efficient charging can be performed according to the remaining battery level, and the charging time can be shortened. In this case, it goes without saying that the control of the charging current may be performed in three steps or more or linearly, instead of the two steps as in the above embodiment.

By the way, as the information contained in the recognition information, the following pieces of information can be considered. <Indispensable information> Total capacity of battery (A) Remaining capacity of battery (B) Required amount of battery charge (C) However, since there is a relation of A = B + C, there are two pieces of information among A, B and C. Good. Since there is a relation of C = charging current I × charging time T, information of I or T may be used. If you do not understand the above conditions, it may be a primary battery, so do not charge it. <Supplemental information> Battery type (primary / secondary) or model Unique identification number of battery Year of use of battery Information used for setting other charging conditions.

In addition, although the optical communication means is adopted in the above-mentioned embodiment, it is also possible to adopt a means for performing communication by electromagnetic induction. As the secondary battery, not only the lithium ion battery but also various secondary batteries can be adopted.
Further, the present invention is not limited to a bar code reader as a device to be charged, but can be applied to a mobile phone, a PDA, and general electric devices to be charged and used. Can be carried out.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a main part of a system, showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view schematically showing a state in which a barcode reader is set in the charging device.

FIG. 3 is a flowchart showing a processing procedure on the charging device side.

FIG. 4 is a flowchart showing a processing procedure on the barcode reader side.

[Explanation of symbols]

In the drawings, 1 is a bar code reader (device to be charged), 2 is a charging device, 3 is a main body case, 4 is a secondary battery, 5 is a charging section,
6 is a power receiving coil, 8 is a power transmitting coil, 9 is a charging control unit, 1
0 is a mounting unit, 11 and 13 are transmitting / receiving units (communication means), 1
Reference numerals 2 and 14 denote recognition units.

Claims (15)

[Claims] 1. A power receiving coil having a battery and a power receiving coil, and a power transmission coil which also serves as a stand on which the device to be charged is detachably set and which is electromagnetically coupled to the power receiving coil in a set state of the power receiving device. In a non-contact type charging system including a charging device having a charging unit having the communication device, each of the charging target device and the charging device has a communication means for performing mutual communication in a set state with respect to the charging device of the charging target device. The charging device is configured to transmit recognition information regarding charging conditions for the charging device to the charging device by the communication unit, and the charging device is configured to communicate via the communication unit. A non-contact type charging system, comprising: a charging control unit that controls charging in the charging unit based on the recognition information received. 2. The non-contact charging system according to claim 1, wherein the communication unit performs non-contact two-way communication by light or electromagnetic induction. 3. The charging device outputs a response request signal by the communication means at predetermined time intervals, and the device to be charged transmits recognition information based on receiving the response request signal. It is configured, and the charging device performs charging in a unit of a fixed time longer than the predetermined time interval.
Alternatively, the non-contact charging system described in 2. 4. The recognition information transmitted from the device to be charged to the charging device includes battery type information indicating a type of a battery mounted on the device to be charged, and charging control means of the charging device. The non-contact charging system according to claim 1, wherein the charging is executed under the condition that the battery type information is a secondary battery. 5. The recognition information transmitted from the device to be charged to the charging device side includes battery capacity information indicating the capacity of a battery mounted on the device to be charged, and charging control means of the charging device. The non-contact charging system according to any one of claims 1 to 4, wherein the charging is controlled by a charging current having a magnitude corresponding to the battery capacity information. 6. The recognition information transmitted from the device to be charged to the charging device side includes battery remaining amount information indicating the remaining amount of the battery installed in the device to be charged, The non-contact charging system according to any one of claims 1 to 5, wherein the charging control means controls the charging with a charging current having a magnitude according to the battery remaining amount information. 7. A charging unit having a power transmission coil electromagnetically coupled to the power receiving coil in a set state of the device to be charged, which also serves as a stand on which a device to be charged having a battery and a power receiving coil is detachably set. A non-contact type charging device, which relates to communication means for performing non-contact communication with the device to be charged in a set state of the device to be charged, and charging conditions received from the device to be charged by the communication device A charging device, comprising: a charging control unit that controls charging in the charging unit based on recognition information. 8. The communication means is configured to output a response request signal at predetermined time intervals, and the charge control means performs charging in units of a fixed time longer than the predetermined time interval. The charging device according to claim 7, wherein: 9. The recognition information includes battery type information indicating the type of battery installed in the device to be charged,
9. The charging apparatus according to claim 7, wherein the charging control unit executes charging under the condition that the battery type information is a secondary battery. 10. The recognition information includes battery capacity information indicating a capacity of a battery mounted on the device to be charged, and the charging control unit is configured to charge a charging current having a magnitude corresponding to the battery capacity information. The charging device according to any one of claims 7 to 9, wherein charging is controlled by. 11. The recognition information includes battery remaining amount information indicating the amount of remaining amount of a battery mounted on the device to be charged, and the charging control unit is responsive to the battery remaining amount information. The charging device according to any one of claims 7 to 10, wherein charging is controlled by a charging current having a magnitude. 12. A charging target device configured to have a battery and a power receiving coil inside a main body, and to be charged in a state of being detachably set in a non-contact type charging device having a power transmitting coil, wherein the charging is performed. A communication means for performing non-contact communication with the charging device in a state of being set to the device is provided, and when the response request signal from the charging device is received by the communication means, the recognition information regarding the charging condition is transmitted. A device to be charged characterized in that 13. The device to be charged according to claim 12, further comprising a type discriminating unit that discriminates a type of the battery, and the recognition information includes battery type information discriminated by the type discriminating unit. . 14. The device according to claim 12, further comprising a capacity determining unit that determines the capacity of the battery, and the recognition information includes the battery capacity information determined by the capacity determining unit. Charging equipment. 15. The battery according to claim 12, further comprising a remaining amount discriminating unit that discriminates the remaining amount of the battery, and the recognition information includes the remaining battery amount information discriminated by the remaining amount discriminating unit. 15. The device to be charged according to any one of 14.