JPH03215134A - Information apparatus - Google Patents

Abstract

PURPOSE:To prevent the inflow of current from a new battery into an old battery upon replacing the batteries by providing a plurality of electrodes and supplying power to the base plate of electronic parts through respective diodes. CONSTITUTION:The projected electrode 3 of a new battery pack 1b is brought into contact with rail type electrodes 2a, 2b at the side of the main body 5 of an information apparatus before all of the projected electrodes 3 of an old battery pack 1a are separated from the rail type electrodes 2a, 2b at the side of the main body 5 of the information apparatus whereby the battery pack 1a, is replaced by the battery pack 1b without interrupting the power supply of the information apparatus 5. The rail type electrode 2a at the side of the main body 5 of the information apparatus is divided previously while respective electrodes are provided with the diodes 4 for preventing reverse flow. The length of the divided electrode is made shorter than an interval between the most rear side electrode 3a of the old battery 1a and the most fore side electrode 3b of the new battery 16 when the old and new batteries 1a, 1b are arranged.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information device in which a battery (battery, battery pack, etc.) that is attached and touched can be replaced.

The present invention also relates to a battery installed in the information equipment. [Prior Art] In a conventional device, as described in Japanese Patent Laid-Open No. 61-250965, the old battery and the new battery to be replaced in the battery compartment of the housing are installed almost side by side, and the new battery is placed next to the old battery. In the process of moving the battery to its location, a contact piece is provided that commonly contacts the electrodes of both the old and new batteries and supplies current from both batteries to the load, without interrupting the current supplied to the load. It was possible to replace the battery.
[Problem to be solved by the invention] In the above conventional technology, when replacing batteries, the old battery whose voltage has decreased due to discharge and the new battery whose voltage has not decreased come into common contact with the same contact piece. However, there was a problem in that part of the current from the new battery was used to charge the old battery, shortening the life of the new battery.

The purpose of the present invention is to solve the above-mentioned problems of the prior art,
The purpose of the present invention is to provide an information device that can prevent current from the old battery from flowing into the new battery when replacing the battery. Another object of the present invention is to provide an information device in which the power supply does not momentarily shut off even if an external force is applied to the battery and the battery moves slightly.

[Means to solve the problem]

In the present invention, in order to prevent current from flowing from the new battery to the old battery when replacing the battery, multiple electrodes are provided, and power is supplied from each electrode to the electronic component board via a diode. A secondary battery with a protection circuit according to the present invention includes a secondary battery, a first electrical connection means for outputting the output of the secondary battery to the outside via a diode, and a first electrical connection means for outputting the output of the secondary battery to the outside via a diode. The battery is characterized by comprising second electrical connection means for enabling output without going through the diode and for charging the secondary battery.

Further, in the present invention, the secondary battery may have a structure in which batteries are stacked. Further, in the present invention, the superpower of the secondary battery with the protection circuit may be set to a value obtained by adding a forward drop voltage of the diode to a predetermined output voltage of the secondary battery.

Further, the present invention may include a switching means for selectively switching between the first electrical connection means and the second electrical connection means to use them as external terminals. [Operation] To replace the battery without cutting off the power to the main unit, temporarily connect the old and new batteries in parallel, and then
After making sure that current can be supplied from either of the new batteries, you will need to remove the old battery. In the present invention, when replacing such a battery, even if both the old and new batteries are connected, the electrodes that each battery contacts are different from each other, and each electrode is equipped with a diode to prevent backflow. No current flows from the new battery to the old battery, and there is no unnecessary current consumption of the new battery. In a secondary battery with a protection circuit, the output of the stacked batteries is outputted to the outside via the diode, so the output current of the battery is outputted to the outside from the first electrical connection means. The output current from the battery does not flow into the battery.

Furthermore, since a second electrical connection means dedicated to charging is separately provided, its diode is not affected during charging.

Furthermore, if the total superpower of the stacked batteries is set higher by the forward voltage drop of the diodes, the superpower will not be affected by the diodes when viewed from the outside.

〔Example〕

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. FIG. 1 is a schematic diagram showing the main parts of an information device as a first embodiment of the present invention, in which two old and new battery packs la and lb are connected to rail-shaped electrodes 2a and 2b on the information device main body side. This shows how the parts are being exchanged while sliding on top of them. Figure 2 shows the information equipment body 5 in Figure 1.
FIG. 3 is a perspective view showing how the battery packs la and lb are replaced in FIG.

As shown in Fig. 1, each battery pack la, lb has a plurality of convex electrodes 3 on the ■ side and the θ side, and usually contacts the rail-shaped electrodes 2a, 2b on the information device main body 5 side. , and supplies power to an electronic component board (not shown) via terminals 9 and 10.

Battery packs la and lb are replaced by pushing the old battery pack 1a away with the new battery pack 1b. All convex electrodes 3 of the old battery pack 1a
By bringing the convex electrode 3 of the new battery pack 1b into contact with the rail-shaped electrodes 2a, 2b on the information device main body 5 side before the battery pack 1b separates from the rail-shaped electrodes 2a, 2b on the information device main body 5 side, the information device To replace a battery pack without disconnecting power. At this time, the old battery pack 1a whose voltage has decreased due to discharge and the new battery pack 1b whose voltage has increased due to charging come into common contact with the same electrode, and current flows from the new battery pack 1b to the old battery pack 1a. In order to prevent this, the rail-shaped electrode 2a on the information device main body 5 side is divided in advance, and a diode 4 for preventing backflow is provided on each electrode. The length of the divided electrode is
When both old and new batteries 1a and lb are lined up, the last electrode 3a of the old battery and the first electrode 3 of the new battery
Make it shorter than the distance with b.

In practice, for example, as shown in FIG. 2, a groove for housing the battery pack is provided on the back surface of the information device main body 5, and the battery packs la and lb are replaced while being slid laterally. At this time, the information device main body 5 side and the battery pack l
The arrangement of electrodes a and lb is as shown in Figure 3. Next, a second embodiment of the present invention will be explained using FIGS. 4 and 5. FIG. 4 is a schematic diagram showing the main parts of an information device as a second embodiment of the present invention, and similarly to FIG. 1, it shows the state of each electrode when replacing the battery pack while sliding it. ．． The difference from FIG. 1 is that rail-shaped electrodes 2c and 2d are provided on the battery packs lc and ld, and a convex electrode 3 is provided on the information device main body side. Figure 5 shows the information device main body 5 and battery pack I in Figure 4.
FIG. As shown in FIG. 4, each battery pack 1c, 1d has a diameter of Φ
It has rail-shaped electrodes 2c and 2d on the side and e side, and the information device main body 5 side has a plurality of convex electrodes 3. Each convex electrode 3 on the Φ side is provided with a diode 4 for backflow prevention. In addition, by making the interval 6 between the rail-shaped electrodes when the old battery pack 1c and the new battery pack 1d are lined up larger than the width of the convex electrode 3 on the information device main body 5 side, the new battery pack can be used when replacing the battery pack. Prevent current from flowing from 1d to old battery pack 1c. At this time, the arrangement of the electrodes of the information device main body 5 and the battery packs lc and ld is as shown in FIG. As described above, the present invention can be applied to information devices having a battery pack holding mechanism in which the battery pack can be attached by sliding it and removed by continuing to slide it in the same direction. There are two directions in which to slide the battery pack: one is in the length direction of the information device, and the other is in the thickness direction of the information device. The examples shown in Figures 6 to 8 below are examples of information equipment that slides in the length direction, and the examples shown in Figures 9 to 12 are examples of information equipment that slides in the thickness direction. be. Next, regarding the third embodiment of the present invention, FIGS.
This will be explained using figures.

FIG. 13 is a schematic diagram showing the main parts of an information device as a third embodiment of the present invention. Also, Figure 14 shows the first
The battery pack la in the information device main body 5 in the figure,
It is a perspective view showing how to replace the lb. There are snap-type electrodes 7a, 7b connected in parallel to the electronic circuit board 8. Usually, the battery is connected to only one of the snap electrodes. When replacing the battery, first insert the new battery 1f into the vacant snap electrode 7b.
After connecting the old battery 1e to the snap electrode 7a. In this way, the battery can be replaced without cutting off the power to the information device main body 5. Each snap electrode 7a, 7b is equipped with a diode 4 to prevent backflow, so both old and new batteries 1e, I
Even if f are both connected to the snap electrodes 7a and 7b, current can be prevented from flowing from the new battery 1f to the old battery le.

On the other hand, there is also a method of installing a protection circuit on the battery side when replacing the battery. A secondary battery with a safety circuit according to a fourth embodiment of the present invention will be described below with reference to FIG. 15. FIG. 15 is a circuit diagram of a secondary battery with a preservation circuit according to the fourth embodiment of the present invention, and FIG.
The figure is a perspective view showing the outer wire of the secondary battery with a protection circuit according to the first embodiment. The stacked battery 12 is a secondary battery, and has a negative terminal 14 connected to its negative end. Furthermore, the stacked battery 12 has a diode 11 on the positive side. The diode 11 is provided with a positive terminal (first electrical connection means) 13 on its cathode side. Further, the 7th node side of the diode is connected to the anode of the stacked battery 12. The superpower of the stacked battery 12 is set higher than the target output voltage by the forward drop voltage of the diode 11. A charging terminal (second electrical connection means) 15 is provided at a connection portion 19 between the stacked battery 12 and the anode of the diode 11 .

The diode 11 and the laminated battery 12 are the secondary battery pack 1
6 and are integrated (see Fig. 17). The positive terminal 13, the negative terminal 14, and the charging terminal 15 are located outside the secondary battery pack 16 and can be electrically connected to the outside.6 Next, the operation will be explained.

When used as a power source, a positive terminal 13 and a negative terminal 14 are used.

The diode 11 outputs the output current of the stacked battery 12 only in the direction of the positive terminal 13. Therefore, as shown in FIG. 16, even when such secondary batteries with protection circuits are connected in parallel, excessive current is prevented from flowing from one to the other. The superpower of the stacked battery 12 is set to be higher by the forward voltage drop of the diode 11, so the superpower of the secondary battery pack 1
6. Viewed from the outside, the voltage of the secondary battery with a safety circuit is
This is the same as when there is no diode. When charging, connect charging terminal 15 and negative terminal 1.
Use 4. A diode 11 is connected between the charging terminal 15 and the stacked battery 12.
Because there is no diode, charging can be performed in the same way as without a diode. In addition, the secondary battery pack 16
may have a structure as shown in FIG.

A secondary battery pack 26 shown in FIG. 4 has a groove 21 around the side near the positive terminal 13 and charging terminal 15.

A sliding cover 17 is engaged with the groove 2.1, which can selectively cover one of the positive terminal 13 and the charging terminal 15 by sliding in the groove 21. By providing such a sliding cover 17,
It is possible to prevent the positive terminal 13 and the charging terminal 15 from being charged or used as a power source by mistake. Further, by providing a structure for recognizing the presence of the sliding cover 17 at the battery connection portion of equipment such as an information processing device that uses a secondary battery with a protection circuit, malfunctions can be reliably prevented. The structure for recognizing the presence of the sliding cover 17 is as follows:
For example, when the outline of the sliding cover 17 is asymmetrical and the sliding cover 17 is located on the side of the charging terminal 15, the external shape of the secondary battery with a protection circuit matches the shape of the battery connection part of the device, This can be achieved by making sure that when the sliding cover 17 is located on the positive terminal 13 side, the outer shape of the secondary battery with a protection circuit does not match the shape of the battery connection part of the device. Additionally, malfunctions can be reliably prevented with chargers as well. Further, the diode 11 may be provided not only on the positive terminal 13 side but also on the negative terminal 14 side.

In this case, the charging terminal 15 is provided at the connection between the cathode of the battery and the cathode of the diode. In addition, although the example of a laminated battery was described in the said Example, this invention can also be applied to a battery which is not laminated.

〔Effect of the invention〕

According to the present invention, when replacing the battery, it is possible to prevent current from flowing from the new battery to the old battery, so the life of the new battery will not be shortened as in the past. Furthermore, by having a plurality of electrodes, even if the battery moves slightly due to external vibrations, there will be no momentary interruption of the power supply, and reliability can be improved.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the main parts of an information device as a first embodiment of the present invention, FIG. 2 is a perspective view showing how the battery pack in FIG. 1 is replaced, and FIG. 3 is the same as in FIG. 1. FIG. 4 is a schematic diagram showing the main parts of an information device according to a second embodiment of the present invention, and FIG.
6 to 8 are perspective views showing an information device to which the sliding direction of the battery pack to which the present invention is applied is the longitudinal direction, respectively, 9 to 12 are perspective views showing an information device to which the present invention is applied, in which the sliding direction of the battery back is the thickness direction, and FIG. 13 is a perspective view of an information device as a third embodiment of the present invention. FIG. 14 is a schematic diagram showing the main parts, and a perspective view showing how the battery pack in FIG. 1 is replaced. Figure 15 shows a circuit diagram of a secondary battery with a protection circuit according to the fourth embodiment of the present invention, Figure 16 is a circuit diagram of two secondary battery packs of the present invention connected in parallel, and Figure 17 shows a protection circuit. FIG. 2 is a perspective view showing the appearance of a secondary battery with a circuit. Figure 18 is a perspective view showing the external appearance of a secondary battery with a protection circuit. 1, 1a, 1b, 1c,
1 d-battery pack, lf, le-battery, 2, 2a, 2b, 2c, 2d-rail-shaped electrode, 3,
3 a, 3 b - convex electrode, 4... diode, 5... information equipment body, 6... gap between electrodes, 7
a, 7b... Snap type electrode, 8... Electronic component board, 9, 10... Terminal to electronic component board, 11... Diode, 12... Laminated battery, 13... Positive terminal , 14... Negative terminal, 15... Charging terminal, 16
...Rechargeable battery pack, 17...Sliding type! 0 Figure Hayabusa 11 Figure Collection 12 Figure Hayabusa I3 Figure 8 Collection 15 Figure 8 Collection 15 Figure 17 Figure/6 English Figure 18 Figure

Claims (1)

[Claims] 1. The contact electrode is divided into a plurality of small electrodes, and each of the divided small electrodes is connected to a common connection point via a different diode, and the electrode of the battery to be mounted is connected to the contact electrode. In an information device that contacts a plurality of small electrodes, and is supplied with current from the battery through the small electrodes, diodes, and a common connection point, the battery installed in the device (hereinafter referred to as the old battery) When replacing a battery (hereinafter referred to as a new battery), the electrode of at least one of the old battery and the new battery is always brought into contact with at least one of the plurality of small electrodes, and current is supplied from the battery. At that time, if the electrodes of both batteries contact the small electrode and current is supplied from both batteries, the small electrode that the electrode of the old battery contacts and the electrode of the new battery An information device characterized in that the contacting small electrodes are different small electrodes. 2. In the information device according to claim 1, when replacing the old battery with the new battery, the replacement is performed by sliding both batteries side by side, and the contact electrode is divided into a plurality of small electrodes. consists of a rail-shaped electrode, and the length of the contact electrode in the sliding direction is L.
_1, the length of the longest small electrode in the sliding direction among the plurality of small electrodes is L_2, and the length of the electrode closest to each other between both batteries when both batteries are lined up is L_2. The distance in the sliding direction is L_3
An information device characterized by satisfying the following: L_1>L_3>L_2. 3. In the information device according to claim 1, when replacing the old battery with the new battery, the replacement is performed while sliding both batteries side by side, and the contact electrode is divided into a plurality of small electrodes. consists of a rail-shaped electrode, and the length of the contact electrode in the sliding direction is L.
_1, the length of the longest small electrode in the sliding direction among the plurality of small electrodes is L_2, and the length of the electrode closest to each other between both batteries when both batteries are lined up is L_2. The distance in the sliding direction is L_3
An information device characterized in that, where L_4 is an interval between electrodes in each battery in the sliding direction, L_1>L_3>L_2 and L_1>L_4 are satisfied. 4. In the information device according to claim 1, when replacing the old battery with the new battery, the replacement is performed by sliding both batteries side by side, and the electrodes of both batteries are each made of a rail-shaped electrode. , the length of the rail-shaped electrode in the sliding direction is L_5, the distance between the rail electrodes in the sliding direction between both batteries when both batteries are lined up is L_6, and the length of the plurality of small electrodes is L_5. An information device that satisfies L_5>L_8>L_6>L_7, where the length of each small electrode in the sliding direction is L_7 and the interval between each small electrode in the sliding direction is L_8. 5. Two contact electrodes are connected to a common connection point through different power supply lines and diodes, and the electrode of the battery to be mounted is brought into contact with one of the two contact electrodes, and the contact In information equipment that is supplied with current from the battery through electrodes, feed lines, diodes, and common connection points, the installed battery (hereinafter referred to as the old battery) may be connected to another battery (hereinafter referred to as the new battery). When replacing the old battery, the electrode of the new battery is brought into contact with the other contact electrode while the electrode of the old battery remains in contact with the contact electrode, and then the electrode of the old battery is replaced with the other contact electrode. An information device characterized in that the contact with the contact electrode is released. 6. a secondary battery, and a first electrical connection means for allowing the output of the secondary battery to be output to the outside via a diode;
A secondary battery with a protection circuit, comprising a second electrical connection means for enabling the output of the secondary battery to be output without going through the diode and for charging the secondary battery. 7. The secondary battery with a protection circuit according to claim 1, wherein the secondary battery has a structure in which batteries are stacked. 8. In the secondary battery with a protection circuit according to claim 2, the super power of the secondary battery with a protection circuit is set to a value obtained by adding a forward drop voltage of the diode to a predetermined output voltage of the secondary battery. A secondary battery with a protection circuit characterized by: 9. The secondary battery with a protection circuit according to claim 1, 2 or 3, further comprising a switching means for selectively switching the first electrical connection means and the second electrical connection means to serve as external terminals. A secondary battery with a protection circuit characterized by: