JP2006311712A - Battery pack lid for providing non-contact charge interface and portable telephone having same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery pack interface capable of charging a portable telephone having a battery pack only by placing the portable telephone onto a power transfer device. <P>SOLUTION: The battery pack lid 2 incorporates a power transfer interface 8 and a rectifying circuit 7, and transfers power to the portable telephone 1 having the battery pack 3 in which a protection circuit 5 and a secondary battery 4 are stored and a charge control circuit 6 via contact terminals 9, 10, thus easily providing an interface for non-contact power transfer in the same manner as the installation of a conventional battery pack lid. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a battery pack lid provided with an interface for realizing non-contact charging of a mobile phone.

  Conventionally, problems caused by an electrical contact or the like existing between a charger for charging a secondary battery used as a power source of a device such as a mobile phone and the secondary battery (for example, having a contact) In case of contact damage, the power supply system for portable electronic devices based on the non-contact charging method that can be charged without contact with the charger has been proposed. (For example, refer to Patent Document 1).

  FIG. 5 is a circuit diagram of a power supply system for portable electronic devices based on the non-contact charging method, and the power supply system 9 for portable electronic devices includes a portable electronic device main body 91 and a charger 92.

  The portable electronic device main body 91 has a step-down chopper 93 and a secondary battery 94, and the charger 92 has a rectifier circuit 95, an excitation coil 96, and a switching element 98. The step-down chopper 93 has a choke coil 97.

  The charger 92 switches the DC power output from the rectifier circuit 95 by the switching element 98 and releases electromagnetic energy from the exciting coil 96. At the time of charging, the choke coil 97 is electromagnetically coupled to the exciting coil 96, so that AC power is induced in the choke coil 97, and the secondary battery 94 is charged by DC power obtained by rectifying the AC power.

In the power supply system for portable electronic devices described above, a nickel cadmium battery is used as a secondary battery, but in recent years, a lithium ion battery, which is smaller and lighter and has a larger storage capacity than a nickel cadmium battery, is mainly used as a secondary battery. in use.
JP 2003-244855 A

  However, in the conventional power supply system for portable electronic devices based on the non-contact charging method, including the invention described in Patent Document 1, the portable electronic device main body and the charger are mainly handled as one set. That is, a user who owns one portable electronic device is in a situation of having one kitchen charger for the electronic device. For example, when carrying out the portable electronic device main body when going out for a long time, it is possible. There is a first problem that it is necessary to carry a charger as well, which places a heavy burden on the user.

  Furthermore, in mobile phones that have become indispensable portable electronic devices in recent years, the mainstream charging method is a contact charging method with a charging cord terminal. Therefore, when applying a power supply system based on the above contactless charging method to a conventional mobile phone, it is difficult to shift to the contactless charging method because the conventional mobile phone does not have an appropriate charging interface. There was a second problem.

  Or, for example, the need for a more convenient charging interface when considering the combined use of a conventional contact charging method capable of high-speed charging and a non-contact charging method with excellent portability in one portable device Could be the third issue.

  Therefore, the present invention has been made mainly for solving these problems, is excellent in portability, and can easily realize the transition from the contact charging method to the non-contact charging method or the combined use of both methods. An object is to provide a non-contact charging interface.

  The present invention is a non-contact charging interface in a mobile phone having a battery pack, and constitutes a lid portion for the battery pack, and the lid portion transmits power supplied from the outside to the mobile phone side. A battery pack lid for providing a non-contact charging interface, comprising an interface unit and a rectifier circuit unit for rectifying the power supplied from the power transmission interface unit.

  With this configuration, the battery pack lid side of the mobile phone equipped with the battery pack lid is placed in a certain area on the power transmission device, for example, and the battery without contact is not particularly limited to the placed position. The pack can be charged.

  In addition, the present invention provides a mobile phone having a non-contact charging interface and having a battery pack, and has a lid for the battery pack, and the non-contact charging interface includes at least the battery pack and a charge control circuit unit. And the rectifier circuit unit and the power transmission interface unit, and the lid unit includes the rectifier circuit unit and the power transmission interface unit among the components constituting the contactless charging interface. This is a featured mobile phone.

  With this configuration, for example, it is possible to provide a mobile phone that can charge a battery pack in a non-contact manner without being particularly limited to the placed position by simply placing the battery pack in a certain region on the power transmission device.

  Furthermore, the battery pack lid of the present invention is detachable via a contact terminal portion that connects the rectifier circuit portion and the charge control circuit portion.

  With this configuration, the battery pack lid can be attached to a mobile phone in the same way as a normal lid, so the transition from the conventional contact charging method to the non-contact charging method is easy, and both types can be used in combination. It becomes.

  According to the battery pack lid for providing the contactless charging interface and the mobile phone provided with the battery pack lid according to the present invention, the portability is excellent, and the transition from the contact charging method to the contactless charging method or the combination of both methods is performed. It is possible to provide a non-contact charging interface that can be easily realized.

  A battery pack lid that provides a non-contact charging interface according to an embodiment of the present invention and a mobile phone including the battery pack lid will be described in detail below with reference to the drawings.

  FIG. 1 is a block configuration diagram of a mobile phone and a battery pack lid according to an embodiment of the present invention. As shown in FIG. 1, a mobile phone 1 according to an embodiment of the present invention has a built-in charge control circuit 6, and a battery pack 3 composed of a secondary battery 4 and a protection circuit 5 is, for example, It is equipped in such a manner that it is mounted in a recess or the like provided on the back surface of the cellular phone 1 (not shown). Thus, the battery pack 3 can be charged via the charge control circuit 6. Furthermore, it is possible to attach a battery pack lid 2 provided with a power transmission interface 8 and a rectifier circuit 7 to the mobile phone 1. The battery pack 2 is mounted in such a manner as to cover the battery pack 2 mounted in a recess or the like on the back surface or the like. The battery pack lid 2 is provided with contact terminals 9A and 10A for supplying power to the mobile phone 1, and constitutes an electrical contact with the charging control circuit 6 on the mobile phone 1 side.

  The details of the battery pack lid 2 for supplying power to the mobile phone as described above will be described in detail with reference to FIG.

  First, a base (hereinafter referred to as “rectifier circuit board”) having the power transmission interface 8 and the rectifier circuit 7 is mounted inside the battery pack lid 21, and power is supplied to the mobile phone 1 on the rectifier circuit board. Contact terminals 9A and 10A for supply are provided. As described above, the contact terminals 9A and 10A serve as electrical contacts with the charging control circuit 6 on the mobile phone 1 side.

  At the time of charging, the charging power supplied as electromagnetic energy from a charger (not shown) is transmitted to the rectifier circuit 7 by the power transmission interface 8 (for example, configured by a coil) by induction of AC power due to electromagnetic coupling. Converts AC power into DC power and supplies it to the charging control circuit 6 via the contact terminals 9A and 10A. Then, the DC power supplied from the charging control circuit 6 is charged to the secondary battery 4 via the protection circuit 5.

  According to such a battery pack lid of the embodiment of the present invention, for example, by providing the contact terminals 9B and 10B on the mobile phone 1 side as shown in FIG. 3, the contact terminals 9B and 10B are connected to the charge control circuit. It can be a 6-side contact terminal. In this case, when the battery pack lid 2 is attached to the mobile phone 1, it can be supplied with power from a charger that supplies power by electromagnetic energy, and other battery pack lids (battery pack lids according to the present invention) can be received. When a conventional battery pack lid that is not configured as described above is attached to the mobile phone 1, another charge that can convert, for example, power supplied from a general household power supply (AC power) into DC power as usual. Can be powered by the instrument. The replacement of the battery pack lid at this time is by a simple removal method using a conventionally known locking portion (not shown).

  The state of the battery pack lid 2 attached to the mobile phone 1 in the same mounting procedure as in the prior art has a form as shown in FIG. 4 and the appearance is completely indistinguishable from the conventional mobile phone. Since the lid 2 is provided with the power transmission interface 9 composed of a coil or the like and the rectifier circuit 7 for rectifying AC power into DC power as described above, power supply from a charger that supplies power by electromagnetic energy (not shown) It becomes possible to receive.

  As described above, the non-contact charging interface according to the present invention can receive power supply using electromagnetic energy as a medium. Therefore, for example, the following is assumed as a specific usage scene. .

  First, it is not necessary to carry a charger especially when carrying a mobile phone provided with a battery pack cover according to the present invention and going out for a long time. In other words, a charger that supplies electromagnetic energy (not shown) to any place on the go (for example, a coffee shop table, an office desk on the go, a predetermined place or position not related to public or private, such as a moving airplane or train). Therefore, it is possible to receive power supply without worrying about the contact terminal type (model). On the other hand, if the battery pack cover according to the present invention is replaced with a normal cover that does not include a power transmission interface or a rectifier circuit, the conventional contact charging can be performed. In other words, it is possible to flexibly cope with both needs for portability and high speed.

Block configuration diagram of a mobile phone and a battery pack lid in an embodiment of the present invention The perspective view of the battery pack cover part in embodiment of this invention The figure of the portable telephone side contact terminal part in embodiment of this invention Explanatory drawing explaining the mounting method of the battery pack cover in embodiment of this invention Block diagram of conventional non-contact charging method

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,31 Cellular phone 2,21 Battery pack lid 3 Battery pack 6 Charge control circuit 7 Rectifier circuit 8 Power transmission interface 9, 10 Contact terminal

Claims (4)

A non-contact charging interface in a mobile phone having a battery pack,
Constituting a lid for the battery pack;
The lid includes a power transmission interface unit that transmits power supplied from the outside to the mobile phone and a rectifier circuit unit that rectifies power supplied from the power transmission interface unit. Battery pack lid that provides a charging interface. In a mobile phone having a non-contact charging interface and having a battery pack,
A lid for the battery pack;
The non-contact charging interface comprises at least the battery pack, a charge control circuit unit, a rectifier circuit unit, and a power transmission interface unit.
The said cover part has the said rectifier circuit part and the said electric power transmission interface part among the said components which comprise the said non-contact charge interface, The mobile telephone characterized by the above-mentioned. A mobile phone comprising the battery pack lid according to claim 1. The mobile phone according to claim 2, wherein the lid part is detachable via a contact terminal part that connects the rectifier circuit part and the charging control circuit part.

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