JP3324105B2 - Battery power unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a battery power supply, and more particularly to an improvement of a rechargeable battery power supply capable of storing a dry battery and a rechargeable battery pack in a common storage portion.

[0002]

2. Description of the Related Art Various types of data are exchanged with these detectors when performing maintenance and adjustment at the measurement site of various detectors installed at the measurement site of a plant such as a differential pressure gauge and a flow meter. A portable small-sized terminal device configured to be able to perform the operation is used. In general, a dry battery or a rechargeable battery is used as a power source of such a portable small terminal device.

[0003] As a form of these battery power supply devices, there is a battery box exchange type for exchanging a single power supply type battery-only box and a rechargeable battery-only box which are not compatible with a power source and can be driven only by either a dry battery or a rechargeable battery. There are three battery box types that can store dry batteries and rechargeable battery packs in a common storage unit.

[0004]

However, in such a case, there is a problem that usable batteries are limited to one type. In addition, in the case of (2), although two types of batteries can be used, a battery box corresponding to the type of battery must be prepared.

[0005] On the other hand, in the case of (1), two types of batteries can be shared by one battery box, but there is a possibility that the battery may be charged by mistake as a rechargeable battery despite the storage of dry batteries. Such erroneous charging not only destroys the dry battery, but also causes a failure of a device itself such as a portable small terminal device which is a load of the battery power supply device.

SUMMARY OF THE INVENTION The present invention solves such a conventional problem, and an object thereof is to provide a rechargeable battery power supply device in which a dry battery and a rechargeable battery pack can be stored in a common storage portion. Erroneous charging of a dry battery.

[0007]

SUMMARY OF THE INVENTION A battery power supply of the present invention is a rechargeable battery power supply for accommodating a dry battery or a rechargeable battery pack in a common accommodating portion, comprising a plug connected to a charging power supply. A socket having a switch that is turned off when the plug is inserted and turned on when the plug is removed, and one contact is connected to one output terminal of the socket together with one terminal of the storage unit, A first connector having the other contact connected to the other output terminal of the socket together with the other terminal of the housing via the switch, the first connector being detachably fitted to the first connector, And a second connector to which each terminal of the rechargeable battery pack is connected so as to be connected in parallel with the same polarity to each terminal of the storage section when the connector is fitted.

[0008]

When the dry batteries are stored in the storage section, the output voltage of the dry batteries is directly supplied to the load. Even if the charging plug is inserted into the socket, a charging circuit including the dry battery is not formed, and erroneous charging of the dry battery can be prevented.
When the rechargeable battery is stored in the storage unit, the output voltage of the rechargeable battery is supplied to the load via the switch. Then, by inserting the charging plug into the socket, the charging power supply is connected to the rechargeable battery, and at the same time, the switch is turned off and the supply of the output voltage of the rechargeable battery to the load is turned off.

Thus, a battery power supply device can be realized in which the dry battery and the rechargeable battery pack can be stored in a common storage portion and erroneous charging of the dry battery can be prevented.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram of a configuration of a battery power supply device according to an embodiment of the present invention. FIG. 2 is a circuit diagram showing the connection relationship of FIG. 1, (A) shows a state in which a plug is removed from a socket,
(B) shows a state where the plug is inserted into the socket.

In these figures, 1 is a plug,
It is connected to a charging power supply (not shown). Reference numeral 2 denotes a socket, which incorporates a switch mechanism SW that can be inserted into and removed from the plug 1 and that opens and closes in conjunction with the insertion and removal of the plug 1.
That is, the socket 2 is provided with three contacts a1 to a3, the contact a1 is connected to a positive line, and the contacts a2 and a3 constitute contact points of a switch and are connected to a negative line. It is connected. Reference numeral 3 denotes a printed board on which the first connector 4 is mounted and on which a wiring pattern for realizing a predetermined connection relationship is provided. Reference numeral 5 denotes a main body case. Reference numeral 6 denotes a battery storage section, which stores the dry battery 7 and the rechargeable battery pack 8 in common. First
Connector 4 has two contacts b1 and b2,
One contact b1 is connected to the wiring pattern on the positive side of the dry battery 7 housed in the housing 6 and the socket 2
And the other contact b2 is connected to a contact a3 which is a negative output terminal of the socket 2 constituting the switch SW. Contact a of socket 2 constituting switch SW
2 is connected to the wiring pattern on the negative side of the dry battery 7 stored in the storage section 6. The batteries 7 are stored individually at predetermined positions in the storage unit 6 one by one.
Are stored in the storage unit 6 in an integrated shape in which a predetermined number of the entirety are covered with an insulating sheet member. At this time, the electrode of the storage section 6 functions as a holding member for the battery pack 8. 9
Is a second connector detachably fitted to the first connector 4, wherein when the first connector 4 is fitted, the positive side wiring pattern and the negative side wiring pattern of the dry cell 7 of the storage portion 6 are formed. The first contact c1 is connected to the positive electrode of the rechargeable battery pack 8 and the second contact c2 is connected to the negative electrode of the rechargeable battery pack 8 so that they are connected in parallel with the same polarity.

The operation of such a configuration will be described. Either the dry battery 7 or the rechargeable battery pack 8 is commonly stored in the battery storage section 6. First, in a state where the dry battery 7 is stored, a load (not shown) is directly supplied via a wiring pattern formed on the printed circuit board 3 irrespective of the insertion / removal relationship between the socket 2 and the plug 1. That is, when the plug 1 is not inserted into the socket 2, the contacts a2 and a3 of the socket 2 are in contact with each other and turned on,
The negative side of the socket 2 and the negative side of the dry battery 7 are connected. However, when the plug 1 is inserted into the socket 2, the contacts a2 and a3 of the socket 2 are disconnected and turned off, and the wiring pattern on the minus side of the socket 2 and the minus side of the dry cell 7 are disconnected. This allows
The charging current from the charging power supply connected to the plug 1 does not flow to the dry cell 7, and safety is maintained.

Next, in a state where the rechargeable battery 8 is stored, a load (not shown) is supplied to the load via the connectors 4 and 9, a wiring pattern formed on the printed circuit board 3, and a switch incorporated in the socket 2. You. Thus, the rechargeable battery 8
When the plug 1 is not inserted into the socket 2 in a state where the sockets 2 are stored, the contacts a2 and a3 of the socket 2
Are in contact with each other and turned on, and the wiring pattern on the minus side of the socket 2 and the minus side of the dry battery 7 are connected. However, when the plug 1 is inserted into the socket 2, the contacts a2 and a3 of the socket 2 are disconnected and turned off, and the wiring pattern on the minus side of the socket 2 and the minus side of the dry cell 7 are disconnected. Thereby, the charging current from the charging power supply connected to the plug 1 flows to the rechargeable battery 8 to charge the rechargeable battery 8.

[0014]

As described above, according to the present invention,
A rechargeable battery power supply that can store dry batteries and rechargeable battery packs in a common storage unit can prevent erroneous charging of dry batteries and is effective as a power supply for various DC-driven electronic devices. is there.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory view showing one embodiment of the present invention.

FIG. 2 is a circuit diagram showing a connection relationship of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug 2 Socket 3 Printed circuit board 4 First connector 5 Main case 6 Storage section 7 Dry battery 8 Rechargeable battery 9 Second connector

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01M 10/42-10/48 H01M 2/10 H02J ⁷ /00-7/12

Claims (1)

(57) [Claims] 1. A rechargeable battery power supply device for storing a dry battery or a rechargeable battery pack in a common storage portion, the plug being connected to a power supply for charging, and being turned off when the plug is inserted. A socket having a switch that is turned on when the plug is removed, one contact is connected to one output terminal of the socket together with one terminal of the housing, and the other contact is connected to the housing via the switch; A first connector connected to the other output terminal of the socket together with the other terminal of the socket, detachably fitted to the first connector, and the same as each terminal of the storage portion when fitted to the first connector. A second terminal in which each terminal of the rechargeable battery pack is connected so as to be connected in parallel with the polarity
A battery power supply device comprising: a connector;