JPH0788114B2 - IC card - Google Patents

Description

TECHNICAL FIELD The present invention relates to an IC card that always requires power supply.

[Conventional technology]

Conventionally, as this type of IC card, an IC configured as shown in the schematic perspective view of FIG. 5 and the sectional view of the main part of FIG.
Something like a RAM card in a memory card is known.

Reference numeral 1 in FIG. 5 is a substantially rectangular flat plate-shaped IC module on which electronic parts (not shown) and the like are mounted, and a connector 2 for connecting the IC module 1 to an external system is provided at one end edge of the IC module 1. A storage portion 4 for storing the battery holder 3 is provided on the other end side. A pair of positive and negative electrode terminals 5 and 6 extending to the storage portion 4 are arranged in parallel with each other on the upper surface of the IC module 1 in which the storage portion 4 is formed on the other end side.

The battery holder 3 is arranged so that it can be pulled out from the storage portion 4 along the extending direction of the two electrode terminals 5, 6, that is, the direction of arrow A in the figure, and the battery holder 3 is stored in the storage portion 4. In this state, as shown in FIG. 6, the positive electrode terminal 5 is in contact with the outer peripheral portion of the battery 7 fitted and held on the battery holder 3, and the negative electrode terminal 6 is in contact with the upper surface portion thereof. It is supposed to do.

By the way, the RAM card configured as described above can immediately read and write stored data, as is called a read / write memory (RWM), but always supplies a power supply of a predetermined voltage value or more. Therefore, it is necessary to retain the stored data. Therefore, when the battery 7 is exhausted, it must be promptly replaced with a new one to prevent the loss of stored data. However, when such a battery is replaced, in the RAM card having the above configuration, The power supply is immediately interrupted by pulling out the battery 7. Therefore, at the time of such battery replacement, it is necessary to supply power from outside the RAM card by another power supply device so that the stored data is not lost.

[Problems to be solved by the invention]

However, in the conventional RAM card, when supplying power from the outside when replacing the battery, some of the stored data may be lost due to noise and voltage value setting errors that occur when the card and power supply are connected. There is a problem in that the stored data may be abnormally changed, which is called a data loss.

The present invention has been made to solve such a problem, and an object thereof is to provide a high quality IC card in which stored data is not lost or changed when the battery is replaced.

[Means for solving problems]

The present invention, in order to achieve the above object, holds a main battery that is in contact with an electrode terminal extended from an IC module, and an IC including a battery holder that is pulled out to the outside along the extending direction of the electrode terminal. The card is characterized in that a spare battery that comes into contact with the electrode terminals when the holder is pulled out is provided on the inner side of the main battery along the pulling direction of the battery holder.

[Action]

In the IC card according to the present invention, the main battery that is exhausted in a state where the stored battery is held by the standby battery that is pulled out by the battery holder withdrawing operation coming into contact with the electrode terminals of the IC module and supplying power. Since the battery is removed and replaced with a new battery, there is no interruption in power supply when replacing the battery.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a RAM as an IC card according to an embodiment of the present invention.
FIG. 2A is a schematic perspective view of the card, FIG. 2A is a cross-sectional view of essential parts around the battery holder, FIG. 2B is a plan view thereof, and FIGS. 3A, 3B and 4 are (A), (b) is operation | movement explanatory drawing at the time of battery replacement. The RAM according to the present embodiment
Since the card structure is basically the same as the conventional example,
In FIGS. 4 to 4, parts and components which are the same as or correspond to those in FIGS. 5 and 6 described above are designated by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 1, a battery holder 3 is housed in a housing portion 4 formed on one side of the other end of the IC module 1 in the RAM card, and a main battery 7 and a spare battery 8 are mounted on the battery holder 3. And are fitted and held. The spare battery 8 is arranged in the IC module 1 so that the battery holder 3 is pulled out from the main battery 7 along the extending direction of the pair of positive and negative electrode terminals 5 and 6, that is, in the direction of arrow A in the figure. Is also located on the inner back side (right side in the figure), and its upper surface portion contacts the bent portion 6a formed at the tip portion of the negative electrode terminal 6 as shown in FIG. 2 (a). The height is set to be flush with the upper surface of the main battery 7. Further, as shown in FIG. 2B, one point on the outer peripheral portion of the spare battery 8 is in the pull-out direction of the battery holder 3 at one point on the outer peripheral portion of the main battery 7 in contact with the positive electrode terminal 5, that is, the arrow. It is set on a tangent line along the direction A, and is brought into contact with the positive electrode terminal 5 like the main battery 7. In addition,
A bent portion (not shown) similar to the negative electrode terminal 6 that contacts the outer peripheral portion of the main battery 7 may be formed at the tip of the positive electrode terminal 5.

As described above, in the RAM card of this embodiment, when the battery holder 3 is pulled out from the storage portion 4 along the arrow A direction, and vice versa, the battery holder 3 is stored in the storage portion 4. At the time of the inserting operation, the outer peripheral portions of both batteries 7 and 8 are brought into sliding contact with the positive electrode terminal 5 during the inserting operation into the negative electrode terminal 6 as shown in FIGS. 3 (a) and 3 (b). The upper surfaces of the main battery 7 and the spare battery 8 are successively brought into sliding contact with the bent portions 6a. Furthermore, the battery holder 3
However, as shown in FIG. 2 (a), when the IC module 1 is completely stored in the storage portion 4, the negative electrode terminal 6
This means that the bent portion 6a of 1 is in contact only with the upper surface portion of the main battery 7.

Next, an operation at the time of battery replacement in the RAM card configured as described above will be described.

First, as shown in FIG. 1, in a normal use state in which the battery holder 3 is inserted into the storage portion 4 of the IC module 1 in the direction of arrow B and stored, the battery holder 3 is shown in FIGS. As shown in, the main battery 7 and the spare battery 8 are both in contact with the positive electrode terminal 5, while only the main battery 7 is in contact with the negative electrode terminal 6, so that the predetermined voltage required to retain the stored data is maintained. The power source of is supplied from the main battery 7.

On the other hand, when the battery is replaced due to exhaustion of the main battery 7, the battery holder 3 in the state shown in FIGS.
As shown in FIGS. (A) and (b), connect the main battery 7 to both electrode terminals.
This main battery 7 is removed after pulling it out to the position before 5,6. Therefore, in this state, the positive electrode terminal 5 comes into contact only with the outer peripheral portion of the spare battery 8, while the bent portion 6a of the negative electrode terminal 6 comes into contact only with the upper surface portion of the spare battery 8, thus retaining the stored data. The power supply of the predetermined voltage necessary for the above is supplied from the spare battery 8. At this time, when the battery holder 3 is pulled out to the state shown in FIGS. 4A and 4B, as shown in FIGS. 3A and 3B, the positive electrode terminal 5 and the negative electrode terminal 5 are formed. Since each of 6 is in contact with the spare battery 8 from the stage where the main battery 7 is in contact, the power supply is not interrupted when the power is switched from the main battery 7 to the spare battery 8, and the stored data is partially lost. There is no inconvenience such as occurrence of so-called data blur.

Then, while the power supply by the spare battery 8 is being performed, the main battery 7 is exchanged for a new one from the exhausted one, and the battery holder 3 holding the new main battery 7 is shown in FIGS. As shown in FIGS. (A) and (b), the power supply from the main battery 7 is restarted when the IC module 1 is completely inserted and stored in the storage section 4. In addition, also in this case, the battery holder 3 is
Since the state of (b) is changed to the state of battery (b) of FIG. 2 through the states of FIGS. 3 (a) and (b), the power supply is switched from the spare battery 8 to the main battery 7, Similarly to the above, the power supply is not interrupted when the power is switched.

By the way, the spare battery 8 described above supplies power only for an extremely short time (about several minutes) required for replacement of the main battery 7, and therefore its power supply capacity may be small.
Further, it is sufficient that the size thereof is about 1/2 to 1/4 of the main battery 7. By the way, the power capacity of the main battery 7 that is normally used is 3V, and its outer diameter is 25 mm.

〔The invention's effect〕

As described above, according to the IC card of the present invention, the battery holder holds the main battery and the spare battery, and power is supplied from the spare battery by pulling out the battery holder when the main battery is replaced. Since the main battery is replaced, the power supply for holding the stored data is not interrupted when the main battery is replaced. Therefore, unlike the conventional example, it is not necessary to supply power from another power supply device from the outside, and it is possible to reliably prevent the loss or change of stored data due to noise or voltage value setting error associated with these connections. There is an effect.

[Brief description of drawings]

1 to 4 relate to the present invention, FIG. 1 is a schematic perspective view of a RAM card as an IC card, FIG. 2 (a) is a cross-sectional view of essential parts around the battery holder, and FIG. 2 (b). ) Is a plan view thereof, FIGS. 3 (a) and (b) and FIGS. 4 (a) and (b).
[Fig. 6] is an operation explanatory view when the battery is replaced. Further, FIGS. 5 and 6 relate to a conventional example, FIG. 5 is a schematic perspective view of a RAM card, and FIG. 6 is a cross-sectional view of essential parts around the battery holder. In the figure, 1 is an IC module, 3 is a battery holder, 5 is a positive electrode terminal (electrode terminal), 6 is a negative electrode terminal (electrode terminal), 7 is a main battery, and 8 is a spare battery. The same reference numerals in the drawings denote the same or corresponding parts and components.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location H01M 2/10 PE G06F 1/00 335

Claims (1)

[Claims] 1. An IC card provided with a battery holder for holding a main battery in contact with an electrode terminal extended from an IC module and being drawn out to the outside along the extending direction of the electrode terminal. An IC card, characterized in that a spare battery, which comes into contact with the electrode terminals when the holder is pulled out, is provided on the inner side of the main battery along the pulling direction.