JPH09223520A - Charge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To charge two packs simultaneously through one primary coil of one system by conducting non-contact charge through the electromagnetic induction of the primary coil and secondary coils when secondary battery containing bodies are mounted into secondary battery containing body insertion portions. SOLUTION: When secondary battery containing body insertion portions 11, 12 are provided in the housing 15 of a charge device 7 and packs 2 are mounted in the insertion portions 11, 12 so as to charge, a flat primary coil 13 provide in the vicinity of the insertion portions 11, 12 and flat secondary coils 14 provided on one side faces of secondary battery containing bodies are equipped therewith. At a mounting time of the packs 2 into the secondary battery containing body insertion portions 11, 12, non-contact charge is conducted by the electromagnetic induction of the primary coil 13 and the secondary coils 14. Thereby, no occurrence of short-circuits or the like of protection circuits in the packs 2 by a metal piece is allowed, and two packs 2 can be simultaneously charged by one system combining member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device suitable for charging a secondary battery housing or a portable terminal device such as a portable telephone equipped with the secondary battery housing.

[0002]

2. Description of the Related Art Conventionally, a secondary battery housing (battery pack, hereinafter referred to as a pack) containing a plurality of secondary batteries has been widely used in mobile terminal devices such as mobile phones and mobile camera devices. These packs are constructed as shown in FIG.

FIG. 5 is a perspective view of a portable terminal device such as a portable telephone. In FIG. 5, the above-mentioned pack 2 is detachably attached to the lower portion of the back surface of the portable telephone 1, and the pack 2 is attached to the portable telephone 1. It incorporates multiple secondary batteries and a protection circuit. Further, a connection terminal 4 for supplying a power supply voltage from the secondary battery to the portable telephone 1 is provided on the front surface 3 of the casing of the pack 2,
Although it cannot be seen, the rear surface 5 of the housing as shown in the pack 2 of FIG.
Is provided with a charging voltage supply terminal 6 of a charging device 7.

As described above, the rechargeable battery pack 2 is mounted on the portable telephone 1 as shown in FIG. A first opening 8 into which the mobile phone 1 can be inserted in a tilted state, and a second opening 9 provided on the upper surface of the housing of the charging device 7 so that the pack 2 can be laid down and charged independently ing.

A portable telephone 1 equipped with the above-mentioned pack 2
Alternatively, the single pack 2 may include a spring-shaped contact piece 10 and a pack 2 arranged in the first and second openings 8 and 9 of the charging device 1.
The secondary battery in the pack 2 is charged by contacting it with the charging voltage supply terminal 6 arranged on the rear surface 5.

[0006]

According to the configuration of the conventional charging device 7 described above, the first and second openings 8 of the charging device 7 are provided.
9 and 9, the spring-shaped contact pieces 10 must be brought into contact with the pack 2 integrated with the mobile phone 1 or the charging voltage supply terminal 6 of the individual pack 2, and the mobile phone 1 with a pack or Had a problem that the single pack 2 must be securely attached to the first or second openings 8 and 9 of the charging device 7 so as not to cause poor contact.

Further, metal pieces such as clips fall into the first and second openings 8 and 9 formed on the upper surface of the casing of the charging device 7 to short the contact pieces 10 and damage the charging circuit. There was a problem.

Furthermore, if at least two packs 2 are to be charged simultaneously by the charging device 7, it is necessary to provide spring-shaped contact pieces 10 in the first and second openings 8 and 9, respectively.
There is a problem that requires two groups of terminals.

The present invention is intended to provide a charging device which solves the above problems, and its problem is to consider the contact state between the contact piece 10 and the charging voltage supply terminal 6 during charging. Provided is a charging device 7 which can be easily charged by inserting the pack 2 into the opening 8 or 9 without any risk of short circuit of the charging circuit 7 and which does not require the terminal groups 6 and 9 to be provided in two systems. It is in.

[0010]

According to the present invention, a housing 15 of a charging device 7 is provided with secondary battery housing insertion portions 11 and 12, and the pack 2 is mounted in the secondary battery housing insertion portions 11 and 12. In the charging device 7 which is designed to be charged by 2
A pack is provided with a flat primary wire ring 13 provided near the secondary battery housing insertion portions 11 and 12 and a flat secondary wire ring 14 provided on one side surface of the secondary battery housing. 2 is attached to the insertion parts 11 and 12 of the secondary battery housing, and the primary winding 1
It is configured to perform non-contact charging by electromagnetic induction of the third and secondary wire wheels 14.

According to the charging device 7 of the present invention, the secondary coil 14 arranged in the pack 2 is inserted into the primary coil 13 arranged in the charging device 7 so as to be mutually inductively coupled. Since it is not necessary to provide the charging voltage supply terminal of the pack 2, it is not necessary to consider the contact state at the time of inserting the pack, and the short circuit of the protection circuit in the pack 2 due to the metal piece does not occur, so that the two connecting members of one system can The pack 2 that can be charged at the same time is obtained.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a charging device of the present invention will be described below with reference to FIGS. FIG. 1 is a configuration diagram in which a part of the charging device of the present invention is shown as a cross section, FIG. 2 is a configuration diagram showing a side cross section of each surface of a secondary battery housing (pack) 2 used in the present invention, and FIG. 3 is a primary view. It is a circuit diagram which shows the connection state of a secondary coil.

In FIG. 1, a housing 15 of the charging device 7 is made of synthetic resin or the like in a substantially rectangular parallelepiped shape, and has a first secondary battery container insertion portion (hereinafter referred to as a first pack insertion portion) on its upper surface. 1)
First and second secondary battery housing insertion portions (hereinafter referred to as second pack insertion portions) 12 are formed. The openings of the first and second pack insertion portions 11 and 12 are formed in a substantially rectangular shape, and are formed in a rectangular parallelepiped shape having a bottom portion that is inclined rearward in the height direction.

An LCD 16 for charging display is provided on the front surface of the housing 15.
Etc. are provided, and a charging status display and the like are performed. 17 is LC
It is a pack light LED for D display. In the housing 15, a charging circuit and a protection circuit are incorporated on the printed circuit board 18 and arranged at appropriate positions. In this example, the first pack insertion portion 11 has a size that allows the pack 2 to be attached to a mobile terminal such as the mobile phone 1, and the second pack insertion portion 12 inserts the pack 2 by itself. It has been selected to be as large as possible.

First and second pack insertion portions 11 and 12
The primary coil 13 connected to the charging circuit is disposed between the rear side plate of the first pack insertion portion 11 and the front side plate of the second pack insertion portion formed therebetween.

In the cross section of the portable telephone 1 shown in FIG. 1, SP is a transmitter, MIC is a receiver, LCD is a display, and K is a receiver.
ey is a numeric keypad group, and RF is a circuit such as RF.

The detailed structure of the pack 2 shown in FIG. 1 will be described with reference to FIGS. 2A and 2D are left and right side sectional views, 2C is a partial front sectional view, and 3B and 2E are top and bottom sectional views.

2A to 2E, the pack 2 is formed of a box-shaped casing 19 made of a rectangular parallelepiped metal having a substantially square front surface,
It is possible to use an iron plate or a nickel plate that is plated with nickel to enhance the electromagnetic shielding effect. In this example, three secondary batteries 20 are arranged in the housing 19 and connected in series with each other. Reference numeral 21 denotes a protection circuit board in which a protection circuit for protecting the secondary battery 20 is incorporated. As shown in FIGS. 2A to 2C, the top surface (or bottom surface) of the housing 19 is provided with a power supply voltage supply. A connection terminal 4 is provided.

FIG. 3 is a circuit diagram showing a coupled state of the primary and secondary windings of this example. The windings arranged on the front surface (or rear surface) of the casing 19 of the pack 2 are ring-shaped. It is composed of a wound flat coil or a primary coil 13 wound flatly in a spiral shape. The primary coil 13 is supplied with an AC voltage from an AC power source 23 to a high frequency oscillation circuit 24 and is supplied with 100 kH. The high frequency is supplied. The secondary battery 20 is protected by a current or a voltage induced in a secondary winding 14 arranged on the front surface (or back surface) of the pack 2 by a magnetic flux or a magnetic force line generated by a current flowing through the primary coil 13. It is configured to charge current or voltage via 22.

In the charging device 7 described above, the primary windings 13 can be simultaneously inductively coupled to the secondary windings 14 and 14 arranged in the two packs 2. It is possible to obtain the one that can charge the two packs 2 and 2 at the same time. Also, the wire wheel 1 in the pack 2
4 is made flat and the case 19 is provided with a shielding effect, so that the pack 2 can be made thin. Of course, a sufficient shielding effect is obtained with the nickel plate. In addition, when the primary wire wheel 13 is arranged along the bottom surfaces of the first and second secondary battery container insertion portions 11 and 12, metals such as necklaces fall into these insertion portions. Heat is generated by electromagnetic induction, but in this example, the primary wire ring 13 is formed on the front and rear surfaces of the first and second secondary battery housing insertion portions 11 and 12.
Is provided, the above-mentioned harmful effects do not occur.
Further, a contacting piece is not exposed in the insertion portion without causing a contact failure during charging, so that a charging device having no fear of a short circuit or the like can be obtained.

In the above-mentioned embodiment, the housing 15 is used to guide the pair of packs 2 and 2 to each other by the primary winding 13 of one system.
The case where the first and second secondary battery container insertion portions 11 and 12 are provided on the upper surface of the above has been described. However, as shown in FIG. The secondary battery housing insertion portions 11a and 12a are provided so that the pack 2 or the portable telephone 1 with the pack can be pulled out or put in or taken out, or 2, 4, 6, 8 ... The plurality of secondary battery housing insertion portions 11, 12, 11a, 12a may be provided.

Further, although the primary and secondary coils have been described as air-core coils, of course, a magnetic core may be provided and the primary coil may be formed in a solenoid type or the like other than flat.

[0023]

According to the charging device of the present invention, it is possible to charge two packs at the same time by one primary wire of one system, and the contact for contacting the charging voltage supply terminal in the pack insertion portion of the charging device. Since one piece is not required, there is no fear of short-circuiting, and the shielding member for magnetic shielding can also be used as the casing of the pack, so that the thickness of the entire pack can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a cross section of a part of a charging device of the present invention.

FIG. 2 is a configuration diagram of a secondary battery housing used in the charging device of the present invention.

FIG. 3 is a circuit diagram showing a combined state of the wire wheels used in the charging device of the present invention.

FIG. 4 is another configuration diagram showing a cross section of a part of the charging device of the present invention.

FIG. 5 is a perspective view of a conventional portable terminal device.

FIG. 6 is a perspective view of a conventional charging device.

[Explanation of symbols]

1 mobile phone, 2 packs, 7 chargers, 11,
12 1st and 2nd secondary battery housing insertion section, 13 1
Next wheel, 14 Second wheel

Claims (3)

[Claims] 1. A charging device, comprising: a charging device housing provided with a secondary battery housing insertion portion; and a secondary battery housing member attached to the secondary battery housing insertion portion for charging. , A planar 1 provided near the insertion part of the secondary battery housing
A secondary coil wheel and a planar secondary coil wheel provided on one side surface of the secondary battery container are provided, and the secondary battery container is attached to the secondary battery container insertion portion. A charging device, which is configured to perform non-contact charging by electromagnetic induction of a primary coil and a secondary coil. 2. A plurality of two units provided on the charging device housing.
The charging device according to claim 1, wherein the primary coil is provided between the secondary battery housing insertion portions. 3. The charging device according to claim 1, wherein the housing of the secondary battery housing has an electromagnetic shielding effect.