JP2012244263A - Wireless device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless device having a rechargeable battery pack which realizes a communication function, such as a short-range communication, and a non-contact charging function with high performance while saving a space.SOLUTION: A wireless device includes: a battery pack 20 attachable to/detachable from a housing 2 even when the battery pack is turned over; a communication antenna 23 provided on one of a front face and a rear face of the battery pack; a non-contact charging coil 22 provided on the other face of the front face and the rear face of the battery pack; and a wireless device main body 1a provided to the housing 2, receiving power supplied from a battery cell 21 in the battery pack to operate, and having a non-contact charging function for performing charge of the battery cell by a power supplied from outside via the coil 22 in a non-contact manner and a communication function for performing communication via the antenna 23.

Description

  The present invention relates to a wireless device having a contactless charging function.

  Conventionally, as a wireless device having a non-contact charging function, for example, there are devices described in Patent Document 1 and Patent Document 2. This is a common antenna for communication and a coil for non-contact charging (coil for electromagnetic induction). As a communication antenna for a wireless device such as a cellular phone, in addition to an antenna for normal voice communication and data communication, an antenna for short-range communication for an RFID (Radio Frequency Identification) function (for example, a loop) In general, a large number of various antennas such as an antenna for connecting to a local area network (LAN) and an antenna for receiving a television broadcast are provided. For example, Patent Document 3 discloses a device in which an antenna for an RFID function is mounted on a battery pack of a mobile phone.

JP 2001-307032 A JP 2011-030404 A JP 2005-117354 A

  By the way, when a non-contact charging coil and a communication antenna are close to other antennas or metal parts, it is difficult to ensure the required performance, and especially as described above, mobile phones equipped with various antennas and coils. In the wireless apparatus, it is a design problem how to arrange these antennas and coils in a compact manner while ensuring the performance of each antenna and coil. In particular, an RFID antenna and a coil for non-contact charging require a certain area and a short communication distance. Therefore, the mounting position is limited, and it has been difficult to mount the two antennas sufficiently apart so as not to interfere.

  Therefore, it is conceivable to share the communication antenna and the non-contact charging coil as in Patent Document 1 and Patent Document 2 described above, but this has the following problems. That is, when different frequencies are used for communication and electromagnetic induction for contactless charging, there is a problem that sufficient characteristics cannot be obtained. For example, there is a technology that shares an RFID antenna and an electromagnetic induction coil. However, when different frequencies are used for RFID and electromagnetic induction for contactless charging, sufficient characteristics may not be obtained. Even if a frequency switching circuit is used, performance is inferior to a single antenna.

Note that both RFID and non-contact charging have standards, and a design according to each standard is required for standardization. For example, FeliCa (registered trademark), which is an RFID standard, has a frequency of 13.5 MHz, and Qi (registered trademark), which is a standard for non-contact charging, has a frequency of about 100 KHz, and a coil size is also defined. Yes. Because of the restrictions imposed by such standards, when the RFID antenna and the non-contact charging coil are shared, it is difficult to satisfy the respective standards and to secure sufficient wireless performance of each function.
Therefore, an object of the present invention is to realize a communication function such as near field communication and a non-contact charging function in a space-saving and high-performance in a wireless device having a non-contact charging function.

A wireless device of the present invention includes a housing,
A battery pack attached to the housing;
A communication antenna provided on one of the front and back surfaces of the battery pack;
A coil for non-contact charging provided on the other of the front and back surfaces of the battery pack;
Non-contact charging, which is provided in the casing and operates by receiving power supply from the battery cells in the battery pack, and at least charges the battery cells with electric power supplied from the outside via the coils in a non-contact manner. A wireless device main body having a function and a communication function of performing communication with the outside via the antenna;
A wireless device comprising:

  According to the present invention, it is possible to realize a communication function such as near field communication and a non-contact charging function in a space-saving and high-performance manner.

It is an external appearance perspective view of the mobile phone which is an embodiment. It is a notional internal block diagram of the mobile phone. (A) is a back view of the mobile phone, and (b) is a top view of the battery pack. (A) is a front view of a battery pack, (b) is a back view of a battery pack. FIG. 4 is a rear view of the mobile phone, wherein (a) shows a state where the battery pack is mounted with the front side facing forward, and (b) shows a state where the battery pack is mounted with the back side facing forward. It is a conceptual block diagram of the principal part of the said mobile telephone, (a) is the state mounted with the front (antenna side) of the battery pack being the front side (front side of the back of the telephone), and (b) is the battery pack. It is a figure which shows the state mounted | worn with the back surface (coil side) front side.

(First embodiment)
Hereinafter, a first embodiment of the present invention (an example in which the present invention is applied to a mobile phone) will be described with reference to the drawings.
FIG. 1 is an external view of a mobile phone 1 (a mobile phone with an RFID function and a non-contact charging function) according to the present embodiment. In this figure, a mobile phone 1 is provided with a touch panel 3 on a main surface (a surface that is a main operation target) of a housing 2 and a display such as a liquid crystal display or an EL panel on the back surface of the touch panel 3. A display unit 4 made up of devices is provided. In addition, a speaker 5 a and an in-camera 7 as a receiver are provided near the upper side of the touch panel 3, and keys 12 a, 12 b, and 12 c are provided near the lower side of the touch panel 3.

  Here, “near” means an arbitrary position within a so-called frame between at least the end of the main surface of the housing 2 and the end of the touch panel 3. The housing 2 is a frame that houses a built-in component such as a circuit board and constitutes the surface of the mobile phone 1, and has a shape suitable for hand-held, in this case, a thin rectangular parallelepiped box shape. Keys 12a, 12b, and 12c are operation buttons that the user presses, for example, a menu key for displaying a menu, a home key for displaying a desktop (initial screen), and a screen for returning to the previous screen. Return key. Moreover, the code | symbol 6 in FIG. 1 shows the microphone as a transmitter provided in the lower end surface of the housing | casing 2. FIG.

  In addition, although a power button, a battery charging terminal, and the like are provided in an arbitrary portion of the housing 2, they are omitted in the drawing. Although not shown, a mounting portion (slot) for mounting a detachable card type memory may be provided in an arbitrary part of the housing 2. As shown in FIG. 3A, a speaker 5b for outputting a ring tone, an alarm, a musical tone, or the like is provided on the back surface (surface opposite to the main surface) of the housing 2.

  FIG. 2 is a conceptual internal block diagram of the mobile phone 1. In this figure, a mobile phone 1 includes a touch panel 3, a display unit 4, an in-camera 7, a wireless communication unit 8, a voice input / output unit 9, a central control unit 10, a power supply / charging circuit 11, an operation unit 12, an out camera 13, An RFID circuit 14 and a battery pack 20 are provided. Note that the actual circuits and devices constituting the mobile phone 1 are usually mainly divided into a baseband block and a radio block. When the blocks are divided in this way, the wireless communication unit 8 in FIG. 2 belongs to the wireless block, and the touch panel 3, the display unit 4, the in camera 7, the central control unit 10, the operation unit 12, the out camera 13, and the like are basebands. Belongs to a block.

  The wireless communication unit 8 transmits / receives digital data wirelessly to / from the nearest base station (not shown) via the antenna 8a. Digital data includes information on incoming and outgoing calls and information on voice calls. The wireless communication unit 8 transmits and receives the digital data according to control from the central control unit 10. For example, a radio signal from a public network base station or a home base unit is demodulated and output by the radio communication unit 8. The output signal from the wireless communication unit 8 is input to the central control unit 10 of the baseband block as an audio signal or a control signal. Among these, the audio signal is subjected to audio processing and output as audio from the speaker 5a or the like. The control signal is used for processing in the baseband block. Note that a plurality of antennas 8a are provided in the case of corresponding to a multi-antenna technology such as known diversity or MIMO (Multiple input output).

  The voice input / output unit 9 converts the voice signal picked up by the microphone 6 into digital data and outputs it to the central control unit 10 under the control of the central control unit 10, or the digital voice output from the central control unit 10. The signal is converted into an analog signal and is loudened from the speaker 5a. The microphone 6 and the speaker 5a are used for transmitting and receiving telephone calls. However, the speaker 5a may be used for outputting a ringtone of a telephone call (or sound accompanying movie playback). As described above, the speaker 5b is provided on the back surface of the housing 2 separately from the receiving speaker 5a, and a ring tone is output from the speaker 5b via the voice input / output unit 9. Also good.

  As described above, the display unit 4 is provided with the touch panel 3 that can detect contact or approach of a part of a human body (for example, a finger of a hand) on the front surface thereof. The touch panel 3 may be, for example, a piezoelectric type or a capacitance type.

  The battery pack 20 includes a battery cell 21 that is a rechargeable secondary battery, a non-contact charging coil 22, and an RFID antenna 23. Details of the battery pack 20 will be described later. The portion of the mobile phone 1 (wireless device) excluding the battery pack 20 is defined as a mobile phone body 1a (wireless device body) as shown in FIG.

  The power supply / charge circuit 11 generates various power supply voltages necessary for the operation of the mobile phone 1 from the power of the battery cells 21 of the battery pack 20 and supplies the power to each unit. And a function as a charging circuit that charges the battery cell 21 with electric power supplied without contact. As will be described later, in order to enable the non-contact charging function in the present embodiment, it is necessary to mount the battery pack 20 in the state shown in FIG. FIG. 2 illustrates a state in which the battery pack 20 is mounted in the state illustrated in FIG.

  The operation unit 12 performs input processing of operations such as the power button and the keys 12a, 12b, and 12c described above. The touch panel 3 inputs dial input, character input, command input, and the like. The central control unit 10 executes processing according to the operation unit 12 and an input operation signal from the touch panel 3.

  The central control unit 10 includes a microcomputer (hereinafter referred to as CPU) 10a, a read-only semiconductor memory (hereinafter referred to as ROM) 10b, a high-speed semiconductor memory (hereinafter referred to as RAM) 10c, and rewritable. This is a control element of a program control system including a non-volatile semiconductor memory (flash memory, EEPROM, etc .; hereinafter referred to as EPROM) 10d and peripheral circuits not shown. The central control unit 10 loads a control program stored in the ROM 10b or EPROM 10d in advance into the RAM 10c and executes it by the CPU 10a, thereby executing various processes sequentially to control the overall operation of the mobile phone 1. Control.

  Next, the in-camera 7 is provided on the same surface (that is, the main surface) as the display unit 4 in the housing 2, and can capture a still image or a moving image including the face of the user who has the mobile phone 1, for example. is there. The out-camera 13 is a camera that is provided on the back surface (the surface opposite to the main surface) of the housing 2 and captures still images or moving images such as others and landscapes. By operating the keys 12a, 12b, and 12c and the touch panel 3, the user can activate applications such as still image and moving image shooting by the in-camera 7 and the out-camera 13. Although not shown in the figure, a shutter button that is operated by a user to easily execute a shutter operation for photographing with these cameras or the like may be provided on the right side surface of the housing 2, for example.

  The captured still image and moving image data, and the audio data recorded in synchronization with the moving image or the like are recorded in, for example, the EPROM 10d or the card-type memory mounted in the mounting unit described above, and the display unit 4 or the speaker It can be reproduced by 5a or the like. The display unit 4 can also play back still images and moving images (for example, those recorded in the EPROM 10d or the card-type memory) taken by another device different from the cellular phone 1.

  The mobile phone 1 may be provided with a TV (telephone) telephone function in addition to a voice call function for transmitting and receiving voice data. Further, the mobile phone 1 may be provided with an e-mail function, an Internet connection function, a TV broadcast display function, a schedule management function, a calculator function, an alarm (alarm) function, a music data playback function, etc. Needless to say.

Next, the battery pack 20 and its related configuration will be described.
The battery pack 20 includes a thin rectangular parallelepiped box-shaped battery case 20 a that is smaller than the housing 2. In the battery case 20a, in addition to the battery cell 21 which is a secondary battery, for example, a switching element and a control IC (not shown) for preventing overcharge and overdischarge, and an external circuit of the battery pack 20 are provided. A thermistor (not shown) that is a resistor for detecting temperature is incorporated.

  As shown in FIG. 4A, an RFID antenna 23 is formed on the front surface of the battery case 20a. In this case, the RFID antenna 23 is made of a linear (narrow strip-shaped) conductor formed so as to go around the outer periphery of the front surface of the battery case 20a by approximately three turns. Both ends of the RFID antenna 23 are connected to battery side RFID terminals TM11 and 12 (shown in FIG. 4B) formed on the back side through the lower surface of the battery case 20a.

  As shown in FIG. 4B, a non-contact charging coil 22 is formed separately from the front-side RFID antenna 23 on the back surface of the battery case 20a. In this case, the coil 22 is made of a linear conductor formed so as to go around the outer periphery of the back surface of the battery case 20a by approximately one turn. Both ends of the coil 22 are connected to battery side charging terminals TM9 and TM (shown in FIG. 3B), which will be described later, formed on the upper surface of the battery case 20a. Further, as shown in FIG. 4B, battery-side RFID terminals TM11 and TM12 are formed at the lower part of the back surface of the battery case 20a.

  Next, as shown in FIG. 3A, a housing recess 2 a (battery mounting portion) in which the battery pack 20 can be mounted is formed on the back surface of the housing 2. The storage recess 2a and the battery pack 20 have a structure in which the battery pack 20 can be attached to and detached from the storage recess 2a by inverting the front and back of the battery pack 20. That is, as shown in FIG. 5 (a), the battery pack 20 can be mounted in the housing recess 2a with the front surface of the battery pack 20 positioned on the front surface side of the back surface of the housing 2. FIG. As shown in b), the battery pack 20 can be mounted in the housing recess 2a with the back surface of the battery pack 20 positioned on the front surface side of the back surface of the housing 2. Hereinafter, a state in which the battery pack 20 is mounted in the direction illustrated in FIG. 5A is referred to as a front outer state, and a state in which the battery pack 20 is mounted in the direction illustrated in FIG.

  Here, the surface (opening) of the storage recess 2a is closed by attaching a cover (lid member) (not shown) with the battery pack 20 mounted. Further, the battery pack 20 attached by the cover thus attached is covered and protected. FIG. 3A and FIG. 5 illustrate a state where the cover is removed. FIG. 3A illustrates a state where the battery pack 20 is further removed. In FIGS. 3A and 4, an alternate long and short dash line indicates an axis A <b> 1 and an axis A <b> 2 that are the centers of inversion of the battery pack 20. The axis A <b> 1 is a line fixed to the battery pack 20, and the axis A <b> 2 is a line fixed to the housing 2. Even when the battery pack 20 is reversed and the mounting direction is changed, the axis A1 and the axis A2 always coincide with each other. In other words, even if the battery pack 20 is reversed and the mounting direction is changed, the position that does not change relatively between the housing 2 and the battery pack 20 is the position of the axis A1 and the axis A2.

  As shown in FIG.3 (b), terminal TM4-10 is provided in the upper end surface of the battery case 20a. Among the terminals TM4 to 10, the terminals TM4 to TM8 are battery side battery terminals. Among these terminals TM4 to TM8, the terminal TM4 and the terminal TM8 are negative terminals (−) connected to the negative electrode side of the battery cell 21, and the terminals TM5 and TM7 are one of the thermistors (temperature measurement resistors) described above. The terminal TM6 is a plus terminal (+) connected to the positive electrode side of the battery cell 21.

  Here, the battery side battery terminals TM4 to TM8 are provided symmetrically with respect to the axis A1 that is the center of inversion of the battery pack 20. In this embodiment, the plus terminal TM6 is arranged on the axis A1, the thermistor terminals TM5 and 7 are arranged at the same distance on both sides, and the minus terminals TM4 and 8 are arranged at the same distance on both sides. Yes.

  Note that one terminal of the thermistor built in the battery pack 20 is connected to the thermistor terminals TM 5 and 7, and the other terminal of the thermistor is connected to the negative electrode side of the battery cell 21 in the battery pack 20. Has been. For example, in the power supply / charging circuit 11 of the mobile phone body 1a, the temperature corresponds to the temperature in the battery pack 20 based on the resistance value between the minus terminals TM4, 8 and the thermistor terminals TM5, 7 (that is, the resistance value of the thermistor). To generate a signal. This signal (temperature data) is used in the mobile phone main body 1a, for example, for a charge control function (a function for stopping charging when the temperature of the battery pack 20 exceeds a specified value).

  Of the terminals TM4 to TM10, the terminals TM9 and TM10 are battery side charging terminals. As described above, the battery side charging terminals TM9 and TM10 are terminals connected to both ends of the non-contact charging coil 22 formed on the back surface of the battery case 20a.

  On the other hand, as shown in FIG. 3A, main body side battery terminals TM <b> 1 to 3 and main body side charging terminals TM <b> 15 and 16 are provided in the upper part of the housing recess 2 a of the housing 2. Among the main body side battery terminals TM1 to TM3, the terminal TM1 is a plus terminal, the terminal TM2 is a thermistor terminal, and the terminal TM3 is a ground terminal (minus terminal). The plus terminal TM1 is disposed on the axis A2 described above. Further, main body side RFID terminals TM13 and 14 are provided at the lower part of the housing recess 2a of the housing 2.

  Of the terminals on the main body side provided in the housing 2, the main body side battery terminals TM1 to TM3 are terminals paired with the above-described battery side battery terminals TM4 to TM8, and these main body side battery terminals TM1. To 3 and battery side battery terminals TM4 to TM8 constitute a battery connector 31 (shown in FIG. 6). That is, the main body side battery terminals TM1 to TM3 and the battery side battery terminals TM4 to TM8 are brought into contact with and separated from (contact with or separated from) the battery pack 20 when the battery pack 20 is attached or detached. It functions as a battery connector 31 that performs electrical connection and disconnection with the (power supply / charging circuit 11).

  The battery connector 31 has a positive terminal TM1 and a positive terminal TM6, a thermistor terminal TM2 and a thermistor terminal TM5, and a ground terminal when the battery pack 20 is mounted in the aforementioned front outer state (FIG. 5A). TM3 and the minus terminal TM4 are brought into a connected state by being brought into contact with each other and conducting. In addition, when the battery pack 20 is mounted in the above-described back side outside state (FIG. 5B), the battery connector 31 includes the plus terminal TM1 and the plus terminal TM6, the thermistor terminal TM2 and the thermistor terminal TM7. Further, the ground terminal TM3 and the minus terminal TM8 are brought into contact with each other and brought into a connected state.

  Further, the main body side charging terminals TM15 and 16 are terminals that make a pair with the battery side charging terminals TM9 and 10 described above. The main body side charging terminals TM15 and 16 and the battery side charging terminals TM9 and 10 are connected to the charging connector 32. (Shown in FIG. 6B). That is, the main body side charging terminals TM15 and 16 and the battery side charging terminals TM9 and 10 are brought into contact with and separated from each other when the battery pack 20 is attached and detached, and the non-contact charging coil 22 and the mobile phone main body 1a (the power source / charging circuit 11). It functions as a charging connector 32 that performs electrical connection to and disconnection from the terminal.

  When the battery pack 20 is mounted in the above-described front outer state (FIG. 5A), the charging connector 32 is connected to the main body side charging terminals TM15, 16 centering on the axis A2. Since they are separated to symmetrical positions (positions on the opposite side in the left-right direction in FIG. 3A), the respective terminals become non-contact and become non-connected. In addition, when the battery pack 20 is mounted in the above-described back side outside state (FIG. 5B), the charging connector 32 contacts the terminals TM15 and TM9, and the terminals TM16 and TM10, respectively. When connected, the connection is established.

  The body-side RFID terminals TM13 and 14 are terminals that make a pair with the battery-side RFID terminals TM11 and 12 described above. The body-side RFID terminals TM13 and 14 and the battery-side RFID terminals TM11 and 12 are connected to the RFID connector 33. (Shown in FIG. 6A). That is, the body-side RFID terminals TM13 and 14 and the battery-side RFID terminals TM11 and 12 are brought into contact with and separated from each other when the battery pack 20 is attached / detached, and the electric power between the RFID antenna 23 and the mobile phone body 1a (RFID circuit 14). It functions as an RFID connector 33 that performs automatic connection and disconnection.

  When the battery pack 20 is mounted in the above-described back side outside state (FIG. 5 (b)), the RFID connector 33 has the battery side RFID terminals TM11 and TM12 on the front side as shown in FIG. 5 (b). Since the main body side RFID terminals TM13 and 14 are separated from each other, the respective terminals become non-contact and become in a non-connected state. When the battery pack 20 is mounted in the above-described front outer state (FIG. 5A), the RFID connector 33 is in contact with the terminals TM13 and TM11, and the terminals TM14 and TM12. When connected, the connection is established.

  Due to the change in the connection state between the charging connector 32 and the RFID connector 33 described above, in the present embodiment, the aforementioned front outer state (the mounting state of the battery pack 20 in which the RFID antenna 23 is located on the surface side of the housing recess 2a). Then, the RFID function (short-distance communication function) can be executed, the non-contact charging function cannot be executed, and the above-described backside outside state (battery pack in which the non-contact charging coil 22 is located on the front side of the housing recess 2a) 20), the RFID function (short-range communication function) cannot be executed, and the non-contact charging function can be executed.

Next, the mounting of the battery pack 20 of the mobile phone 1 and the operation due thereto will be described.
When the battery pack 20 is attached to the cellular phone 1, when using the RFID function, the RFID antenna 23 is attached to the storage recess 2a with the RFID antenna 23 facing forward (FIG. 5A), and the non-contact charging function is provided. When used, the coil 22 may be attached to the storage recess 2a with the coil 22 facing forward (FIG. 5 (b)).

  If the battery pack 20 is attached in the front outside state, the RFID antenna 23 is located near the cover when the above-described cover covering the battery pack 20 is attached to the housing recess 2a. By having the clearance, it is possible to have an appropriate performance as an antenna. Thereby, the communication of the RFID function can be performed satisfactorily by bringing the vicinity of the cover on the back surface of the mobile phone 1 close to the RFID terminal serving as a communication partner.

  On the other hand, if the battery pack 20 is attached in the state of the backside outside, when the cover covering the battery pack 20 is attached to the storage recess 2a, the coil 22 is located near the cover, and the RFID antenna 23 and the battery cell 21 are connected. By having an appropriate clearance, it is possible to have an appropriate performance as a coil for non-contact charging. Thereby, non-contact charging can be performed satisfactorily by bringing the vicinity of the cover on the back surface of the mobile phone 1 close to the charging base for non-contact charging.

  Here, when the RFID function is used, the connection between the battery pack 20 and the mobile phone main body 1a is as described above. The battery cell 21 and the power source / charge circuit 11 are connected to predetermined terminals (battery side battery terminals) in the battery connector 31. TM6, 5, 4 and main body side battery terminals TM1, 2, 3) are connected, and the RFID antenna 23 and the RFID circuit 14 are connected by the RFID connector 33 (FIG. 6A). On the other hand, when the non-contact charging function is used, the battery cell 21 and the power source / charging circuit 11 are partially different terminals in the battery connector 31 (battery side battery terminals TM6, 7, 8 and main body side battery terminals TM1, 2, 3). The coil 22 for non-contact charging and the power source / charging circuit 11 are connected by the charging connector 32 (FIG. 6B).

  As described above, according to the present embodiment, the communication function (in this case, the RFID function) and the non-contact charging function can be realized with space saving and high performance. That is, since the RFID antenna 23 and the coil 22 are separately mounted on the back and front of the battery pack 20, there is no interference between the antenna and the coil, and it is easy to ensure high radio performance of each. In addition, since these antennas and coils can be arranged by slightly increasing the thickness of the battery pack 20 by a slight thickness of the conductors that constitute these antennas and coils, The outer diameter of the mobile phone 1 hardly increases even if these antennas and coils are provided.

  In the present embodiment, the battery pack 20 is detachable by inverting the front and back with respect to the housing recess 2a (battery mounting portion). Thereby, by changing the mounting direction of the battery pack 20, the RFID antenna 23 and the coil 22 to be used can be arranged closer to the front side than the back side of the mobile phone 1 (wireless device). Therefore, each of the communication function by the antenna (in this case, the RFID function) and the non-contact charging function can be realized with higher performance.

  Further, in the present embodiment, when the battery pack 20 is attached / detached, the charging connector 32 that performs electrical connection and disconnection between the coil 22 and the mobile phone body 1a (wireless device body) and the battery pack 20 are attached / detached. In addition, an RFID connector 33 (communication connector) that performs electrical connection and disconnection between the RFID antenna 23 and the mobile phone main body 1a is provided in the housing recess 2a and the battery pack 20 for attaching and detaching the battery pack 20. Along with these terminals, the battery side charging terminals TM9 and 10 and the main body side charging terminals TM15 and 16, the battery side RFID terminals TM11 and 12 and the main body side RFID terminals TM13 and 14 are configured. For this reason, with respect to these antennas and coils, wiring work (connector attaching / detaching work) accompanying the attaching / detaching of the battery pack 20 is unnecessary, and the attaching / detaching work of the battery pack 20 is easy.

  In the present embodiment, when the battery pack 20 is mounted with the coil 22 positioned on the front surface side of the housing recess 2a (back surface outside state), the charging connector 32 is connected, while the RFID connector 33 is not connected. When the battery pack 20 is mounted (front outer state) where the RFID antenna 23 is located on the front side of the housing recess 2a, the RFID connector 33 is in the connected state, while the charging connector 32 is in the unconnected state. Become. For this reason, only one of the non-contact charging function and the RFID function (short-distance communication function) can be executed by switching the mounting direction of the battery pack 20. Therefore, for example, when it is desired to prohibit the RFID function for the mobile phone 1 used by a child, an advantage that the RFID function can be prevented from working reliably by mounting the battery pack 20 in a predetermined direction. There is.

  Further, in this embodiment, a battery connector 31 that performs electrical connection and disconnection between the battery cell 21 and the mobile phone body 1 a when the battery pack 20 is attached and detached is provided in the housing recess 2 a and the battery pack 20. The battery pack 20 is composed of terminals (battery side battery terminals TM4 to TM8 and main body side battery terminals TM1 to TM3) that come in contact with and separate from each other. For this reason, with respect to the battery cell 21, wiring work (connector attaching / detaching work) accompanying the attaching / detaching of the battery pack 20 is unnecessary, and the attaching / detaching work of the battery pack 20 is easy.

  In particular, in the present embodiment, one side of the terminals constituting the battery connector 31 (in this case, the battery side battery terminals TM4 to TM8) is provided symmetrically with respect to the axis A1 that is the center of reversal of the battery pack 20. Therefore, the battery connector 31 is in a connected state regardless of the mounting direction of the battery pack 20. For this reason, connection between the battery cell 21 and the mobile phone main body 1a is ensured only by fitting the battery pack 20 into the housing recess 2a regardless of the mounting direction of the battery pack 20. Therefore, when the battery pack 20 is removed and the front and back sides are reversed and remounted, wiring work (connector attaching / detaching work) or the like is not necessary, and in this respect also, the battery pack 20 can be easily attached / detached or reversed. .

(Other embodiments)
Next, another embodiment of the present invention will be described.
First, in the first embodiment described above, an antenna for an RFID function is provided in the battery pack, but an antenna for a communication function other than the RFID function may be provided. However, as described above, the antenna having the RFID function requires a certain area and has a short communication distance. Therefore, the effect of applying the present invention (high performance and space saving effect by being provided on one surface of the battery pack). ) Is remarkable.

  Moreover, the aspect which cannot reverse the front and back of a battery pack may be sufficient as this invention. This is because depending on the wireless device, both surfaces of the battery pack may be disposed near the surface of the housing of the wireless device, and in such a case, it is not necessary to invert the battery pack.

  Moreover, the aspect which can remain connected when each connector reverses the front and back of a battery pack may be sufficient. For example, it is possible to maintain a connection state of the connector by extending a wire from the battery pack and providing a connector for connecting the end of the wire to the wireless device body side, and twisting the wire even when the front and back of the battery pack are reversed. There can be.

  In addition, even if the battery pack is turned upside down (that is, even if the orientation of the battery pack is changed), the connection between both the antenna and the coil is maintained, and communication functions such as near field communication and non-contact charging are maintained. There may also be embodiments in which both functions can be used simultaneously.

  Further, the symmetrically provided terminals in the battery connector 31 may be terminals on the main body side (in the above-described first embodiment, main body side battery terminals TM1 to 3) instead of the battery side. That is, for example, in FIG. 3A, a thermistor terminal and a ground terminal may be provided on the left side of the plus terminal TM1 and symmetrically with respect to the right thermistor terminal TM2 and ground terminal TM3 (symmetrically about the axis A2). . In this case, in the battery side battery terminals TM4 to TM8, for example, one thermistor terminal TM7 and the minus terminal TM8 can be deleted.

  The wireless device may include a battery (for example, a primary battery) in addition to the battery pack, and the wireless device main body may receive power supply from this battery.

  In the above-described embodiment, a mobile phone has been described as an example. However, the present invention is not limited to a mobile phone, such as a PDA (personal digital assistant), a personal computer (for example, a notebook PC, a tablet PC), music, and the like. The present invention can be applied to various electronic devices equipped with a secondary battery and equipped with a non-contact charging function and a communication function, such as players, game machines, and portable radios.

The features of the present invention will be described below.
A part or all of each of the embodiments described above can be described as in the following supplementary notes, but is not limited thereto.
(Appendix 1)
A housing,
A battery pack attached to the housing;
A communication antenna provided on one of the front and back surfaces of the battery pack;
A coil for non-contact charging provided on the other of the front and back surfaces of the battery pack;
Non-contact charging, which is provided in the casing and operates by receiving power supply from the battery cells in the battery pack, and at least charges the battery cells with electric power supplied from the outside via the coils in a non-contact manner. A wireless device main body having a function and a communication function of performing communication with the outside via the antenna;
A wireless device comprising:

(Appendix 2)
The housing has a battery mounting portion on one side,
The wireless device according to claim 1, wherein the battery pack is detachable with the front and back reversed with respect to the battery mounting portion.

(Appendix 3)
A charging connector that performs electrical connection and disconnection between the coil and the wireless device main body when the battery pack is attached / detached, and between the antenna and the wireless device main body when the battery pack is attached / detached The communication connector that performs electrical connection and disconnection is configured by a terminal that is provided in the battery mounting portion and the battery pack and contacts and disconnects as the battery pack is attached and detached. A wireless device according to 1.

(Appendix 4)
In the mounted state of the battery pack where the coil is located on the surface side of the battery mounting portion, the charging connector is in a connected state, while the communication connector is in a disconnected state,
Supplementary note 3 wherein the communication connector is in a connected state while the charging connector is in a disconnected state when the antenna is located on the surface side of the battery mounting portion. A wireless device according to 1.

(Appendix 5)
A battery connector for performing electrical connection and disconnection between the battery cell and the wireless device main body when the battery pack is attached / detached is provided on the battery attachment portion and the battery pack, and the battery pack is attached / detached. The wireless device according to any one of appendix 2 to appendix 4, wherein the radio device is configured by a terminal that contacts and separates along with the radio terminal.

(Appendix 6)
The one side of the terminal constituting the battery connector is provided symmetrically with respect to an axis that is the center of reversal of the battery pack, whereby the battery is positioned on the surface side of the battery mounting portion. 6. The wireless device according to appendix 5, wherein the battery connector is in a connected state even when the battery is in a state where the antenna is located on a surface side of the battery attachment part even when the pack is attached. .

(Appendix 7)
The wireless device according to any one of appendix 1 to appendix 6, wherein communication performed outside via the antenna is short-range communication for an RFID function.

1 Mobile phone (wireless device)
1a Mobile phone body (wireless device body)
2 Housing 2a Storage recess (battery mounting part)
10 central control unit 20 battery pack 21 battery cell 22 coil (coil for non-contact charging)
23 RFID antenna (communication antenna)
31 Battery Connector 32 Charging Connector 33 RFID Connector (Communication Connector)
TM1-3 Body side battery terminal TM4-8 Battery side battery terminal TM9,10 Battery side charging terminal TM11,12 Battery side RFID terminal TM13,14 Body side RFID terminal TM15,16 Body side charging terminal

Claims (7)

A housing,
A battery pack attached to the housing;
A communication antenna provided on one of the front and back surfaces of the battery pack;
A coil for non-contact charging provided on the other of the front and back surfaces of the battery pack;
Non-contact charging, which is provided in the casing and operates by receiving power supply from the battery cells in the battery pack, and at least charges the battery cells with electric power supplied from the outside via the coils in a non-contact manner. A wireless device main body having a function and a communication function of performing communication with the outside via the antenna;
A wireless device comprising: The housing has a battery mounting portion on one side,
The wireless device according to claim 1, wherein the battery pack is detachable with the front and back reversed with respect to the battery mounting portion.   A charging connector that performs electrical connection and disconnection between the coil and the wireless device main body when the battery pack is attached / detached, and between the antenna and the wireless device main body when the battery pack is attached / detached The communication connector that performs electrical connection and disconnection is configured by a terminal that is provided in the battery mounting portion and the battery pack and contacts and disconnects when the battery pack is attached and detached. 2. The wireless device according to 2. In the mounted state of the battery pack where the coil is located on the surface side of the battery mounting portion, the charging connector is in a connected state, while the communication connector is in a disconnected state,
The charging connector is in a disconnected state while the communication connector is in a connected state in the mounted state of the battery pack in which the antenna is positioned on the surface side of the battery mounting portion. 3. The wireless device according to 3.   A battery connector for performing electrical connection and disconnection between the battery cell and the wireless device main body when the battery pack is attached / detached is provided on the battery attachment portion and the battery pack, and the battery pack is attached / detached. 5. The radio apparatus according to claim 2, wherein the radio apparatus comprises a terminal that contacts and separates from the terminal.   The one side of the terminal constituting the battery connector is provided symmetrically with respect to an axis that is the center of reversal of the battery pack, whereby the battery is positioned on the surface side of the battery mounting portion. The wireless connector according to claim 5, wherein the battery connector is in a connected state even in a mounted state of the pack, even in a mounted state of the battery pack in which the antenna is located on the surface side of the battery mounting portion. apparatus. The wireless device according to any one of claims 1 to 6, wherein communication performed outside via the antenna is short-range communication for an RFID function.

Images