JPH09306455A - Electronic equipment, battery, battery pack and usage of battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a bad influence by static electricity accumulated in a battery on an electronic equipment in which the battery is mounted. SOLUTION: In one surface of a case 21 of a battery 20 and a minus (-) terminal 23, holes 41, 23a are provided so as to be overlapped. A leaf spring 42 of conductor is mounted to be inserted to this hole 41, 23a, after mounting, the spring, by elasticity itself, comes into contact with the minus (-) terminal 23, a curved part 42a of the spring 42 is protruded a little to the outside from a surface of the case 21. An internal surface 12 of a battery storage case 9 is evaporated with aluminum, FG(frame ground) is formed. The battery 20 is stored in the battery storage case 9 to be guided by the internal surface (FG) 12. Here, the curved part 42a comes into contact with the FG12 before each terminal of the battery 20 comes into contact with each terminal in a device side, static electricity in the battery 20 is discharged to the FG12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique using a battery used in portable (cordless) electronic equipment, and more particularly to a technique for dealing with static electricity stored in the battery.

[0002]

2. Description of the Related Art In recent years, electronic devices have been rapidly made portable (cordless), partly due to the progress of electronic technology. With regard to batteries (batteries) used as power sources for portable electronic devices (hereinafter referred to as portable electronic devices), miniaturization, light weight, and high capacity have been advanced due to the progress of battery technology. The advance of the battery technology is a factor that further promotes portable (cordless) electronic devices.

[0003]

It is known that when different objects come into contact with each other, charges move between them to generate static electricity. If the static electricity enters the electronic device, it adversely affects the electronic device. Therefore, electronic devices are designed by taking measures so as not to be adversely affected by static electricity.

Even in the battery used in the portable electronic device, static electricity is stored inside. The static electricity stored in the battery has a problem in that it enters the electronic circuit from the battery connection terminal of the electronic device to which the static electricity is attached and adversely affects the operation of the elements and the circuit.

A portable electronic device normally has a function (suspend function) for constantly supplying a current to a memory (DRAM or the like) that stores information indicating a current setting state, data input by a user, and the like. The data to be retained is not erased regardless of the power on / off by the user. However, when the electric charge stored as static electricity in the battery flows from the battery connection terminal to the memory, for example, the data stored in the memory may be destroyed.

Due to the nature of portable electronic devices, users often carry them and use them in various places. Therefore, when the above-mentioned problem that the data in the memory is destroyed occurs, it is often impossible to take measures such as re-inputting the destroyed data, and the problem is likely to be more serious. Therefore, measures against static electricity stored in the battery have been desired.

The present invention has been made in view of the above problems, and it is an object of the present invention to prevent adverse effects of static electricity stored in a battery on an electronic device to which the static electricity is attached.

[0008]

SUMMARY OF THE INVENTION An electronic device according to the present invention is provided with a battery storage case provided with a positive side contact terminal and a negative side contact terminal respectively contacting a positive terminal and a negative terminal of a battery, and a battery storage case in the battery storage case. And a conductive member electrically connected to the ground and connecting means for electrically connecting the negative terminal of the battery to the conductive member when the battery is stored in the battery storage case. .

In the above construction, the connecting means is
It is preferable that the positive terminal is a second conductive member that connects the negative terminal to the conductive member before the positive terminal contacts the positive side contact terminal. Alternatively, the conductive member is a minus-side contact terminal, and the connecting means is a path required for contact between the plus terminal and the plus-side contact terminal when the battery is housed in the battery housing case along a predetermined path. It is preferable that the first length of is longer than the second length of the path required for contacting the negative terminal and the negative side contact terminal.

In the latter case, the connecting means makes the length of the minus side contact terminal longer than that of the plus side contact terminal, and the plus terminal of the battery and the minus side when viewed from the direction of housing the battery in the battery housing case. It is preferable that the first length is made longer than the second length by adopting at least one of arranging the positive terminal at a position where the positive terminal is on the front side of the negative terminal. . Further, the difference c between the first length and the second length is: c> | a−b | where a is the width of the plus and minus terminals and b is the width of the plus and minus contact terminals. It is desirable to satisfy the relationship.

Further, it is desirable that the battery has one or more unit cells, which are secondary batteries, housed in a battery pack. Further, it is desirable to provide the battery pack with the second conductive member.

The battery according to the first aspect of the present invention is housed in a battery storage case of an electronic device, and a plus side contact terminal and a plus side contact terminal provided in the battery storage case respectively come into contact with each other. It is provided with a conductive member for grounding the battery on the assumption that current is supplied to the electronic device from the terminal and the negative terminal.

The battery according to the second aspect of the present invention is accommodated in a battery storage case of an electronic device along a predetermined path, and has a plus side contact terminal and a minus side contact provided in the battery storage case. On the premise that electric current is supplied to the electronic device from the positive terminal and the negative terminal that are in contact with the terminals, respectively, there is provided connection means for electrically connecting the negative terminal of the battery and the ground of the electronic device.

In the above construction, the connecting means is
It is preferable that the positive terminal is a second conductive member that connects the negative terminal to the conductive member before the positive terminal contacts the positive side contact terminal. Alternatively, the connecting means disposes the battery by arranging the positive terminal and the negative terminal of the battery at positions where the positive terminal is on the front side of the negative terminal when viewed from the direction in which the battery is stored in the battery storage case. When accommodating along the path in the battery storage case, the first length of the path required for contact between the plus terminal and the plus side contact terminal is set to the second length of the path required for contact between the minus terminal and the minus side contact terminal. It is desirable that the structure is longer than the length.

In the latter case, the difference c between the first length and the second length is c> | ab |, where a is the width of the plus and minus terminals and b is the plus contact terminal and minus contact It is desirable to satisfy the relationship of terminal width.

Further, it is desirable that the battery has one or more unit cells, which are secondary batteries, housed in a battery pack. Further, it is desirable to provide the battery pack with the second conductive member.

The method of using the battery according to the present invention is stored in a battery storage case of an electronic device, and a plus side contact terminal provided in the battery storage case and a plus terminal which contacts the minus side contact terminal, respectively. And batteries that supply current to the electronic device from the negative terminal.If the conductive member is electrically connected to the negative terminal or the positive terminal and the conductive member is electrically connected to the positive terminal, the battery is used. When the conductive member is grounded and the conductive member is electrically connected to the negative terminal before the battery is stored in the battery storage case, at least before the positive terminal contacts the positive side contact terminal. In step, the conductive member is grounded or electrically connected to the ground of the electronic device.

The above-mentioned battery is obtained by accommodating one or more unit cells which are secondary batteries in a battery pack.
Is desirable. The battery pack of the present invention accommodates one or more unit cells, and is provided with a minus terminal and a plus terminal for supplying a current to an electronic device, and the battery pack is attached to the electronic device. In this case, the negative terminal has means for discharging static electricity earlier than the positive terminal.

According to the present invention, the static electricity stored in the battery and the battery pack is discharged directly to the ground or to the ground through the electrode pattern through which the negative current flows. As is well known, various countermeasures against static electricity are applied to electronic equipment, and the ground, electrode patterns on the printed circuit board through which negative current flows, and the like are designed and manufactured so that their areas are as large as possible. Therefore, even if the static electricity is discharged to the ground as described above, the charges injected by the discharge are diffused in a wide range. This affects the electronic device as compared with the case where the static electricity enters the electrode pattern (the area is very small compared to the negative electrode pattern) of the printed circuit board through which the positive current flows. The impact will be very small.

[0020]

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

FIG. 1 is an explanatory diagram of a configuration of a portable electronic device (handy terminal device: handheld terminal (HHT); hereinafter simply referred to as a terminal device) to which the first embodiment is applied. FIG. 1A is a plan view of the terminal device 1 with the front cover 2 removed from the back cover 3.
FIG. 1B is a cross-sectional view taken along the line AA of FIG. 1A of the terminal device 1 in which the front cover 2 is attached to the back cover 3. First, the overall configuration of the terminal device 1 will be described with reference to FIG.

The terminal device 1 is a terminal device that supports improvement of work efficiency, customer service, etc., and is used for various works such as meter reading of electricity charges and order entry at restaurants and the like. Although not shown, various keys and a display device (LCD or the like) for performing these various tasks are provided on the front cover 2. PCB
On the (Printed Circuit Boards) 4, a CPU 5 for controlling the entire apparatus 1, a memory (for example, DRAM) 6 for storing various data, and the like are arranged. The PCB 4 is provided with a protrusion (not shown) provided on the back cover 3, a mounting member 7 to be overlaid on the end of the PCB 4, and a screw 8 having a shape matching a hole provided on the protrusion. Attached to. As shown in FIG. 1A, the PCB 4 is attached to the back cover 3 at four points.

The battery storage case 9 is provided on the back cover 3 so as to be aligned with the PCB 4. The battery storage case 9 is composed of an upper portion 9a and a lower portion 9b, and a part of the back cover 3 forms the lower portion 9b. The upper portion 9a is manufactured separately from the back cover 3, and the battery case 9 has a structure in which the upper portion 9a is attached to the lower portion 9b.

A battery 20 shown in FIG. 2 is housed in the battery housing case 9. The container (case) 21 of the battery 20 is made of an insulating synthetic resin and is shown in FIG.
As shown in, a plus (+) terminal 22 and a minus (−) terminal 23 are provided below one surface of the case 21.

In the battery 20, unit cells (cells) 24 and 25 are housed as shown in FIG. 2 (b). These unit cells 24 and 25 are secondary batteries such as nickel-cadmium storage batteries, nickel-hydrogen storage batteries, and lithium-ion storage batteries. As shown in FIG. 2C, the positive (+) terminal of the unit cell 24 and the negative (−) terminal of the unit cell 25 are connected by the conductive member 26, and the unit cells 24 and 25 are connected in series in the battery 20. It is connected to the. The positive (+) terminal of the unit cell 25 is connected to the positive (+) terminal 22 by the line 27, and the negative (-) terminal of the unit cell 24 is connected to the negative (-) terminal 23 by the line 28. ing.

As shown in FIG. 1B, the battery storage case 9 is formed in conformity with the shape of the battery 20. The battery 20 is stored (installed) in the battery storage case 9 on the surface provided with the plus (+) terminal 22 and the minus (−) terminal 23 (hereinafter, the terminal 22,
2 and 23 are provided, it is performed by inserting the battery into the battery storage case 9 from the direction shown in FIG.

The inner surface 12 of the battery storage case 9 functions as a guide for the battery 20. Storage and removal of the battery 20 in the battery storage case 9 are performed along the path guided thereby.

FIG. 3 shows the lower portion 9b of the battery storage case 9.
FIG. 3 is a diagram illustrating the configuration of FIG. As shown in FIG. 3, a battery connector 30 having a minus (−) contact terminal 31 and a plus (+) contact terminal 32 for battery connection is provided on the back side of the battery storage case 9 when viewed from the direction a.
Is provided. These terminals 31 and 32 are provided on the battery connector 30 according to the shapes of the terminals 23 and 22 of the battery 20 and the positions where they are provided. Therefore, when the battery 20 is inserted into the battery storage case 9 from the direction a, the battery 2
0 positive (+) terminal 22 is positive (+) contact terminal 32
Then, the other minus (-) terminal 23 comes into contact with the minus (-) contact terminal 31 so as to be fitted therein.

By setting such a state, the battery 2
The storage (mounting) of 0 in the battery storage case 9 is completed. The terminal 32 is electrically connected to the electrode pattern 4a of the PCB 4 by the wire 10. The other terminal 31
Are electrically connected to the electrode pattern of the signal ground (hereinafter, referred to as SG) of the PCB 4 by the line 11. Therefore, the battery 20 is stored in the battery storage case 9
The electric current is supplied from the battery 20 to the PCB 4 by storing the electric current in the PCB 4. At that time, the electrode pattern 4
a functions as a power source in the PCB 4.

As is well known, in PCB design,
As a measure against static electricity, it is considered that the SG electrode pattern has a large area. This is because by doing so, the area of the loop formed by the electrode pattern on the PCB 4 is reduced, the efficiency of the receiving antenna is reduced, and the influence of the electrostatic field generated by static electricity is reduced.
This is because such an effect can be obtained. Although not shown in the figure, the SG electrode pattern is large and entirely formed on the PCB 4 for the above reason. For example, the portion of the PCB 4 that is in contact with each mounting member 7 is also the SG electrode pattern.

On the PCB 4 designed on the basis of the above-mentioned points, a CPU 5, a memory 6 and the like are provided.
Electronically sensitive electronic components are placed. In an electronic system having such an electronic component, it is generally performed to shield the electronic component in order to protect it from static electricity. In the mobile device 1, the PCB
Aluminum is vapor-deposited on the inner surfaces 12 of the front cover 2 and the back cover 3 in order to shield 4 and the like.

As is well known, the shield needs to be applied more completely in order not to deteriorate the shielding performance. Therefore, aluminum is entirely vapor-deposited on the inner surfaces 12 of the front cover 2 and the back cover 3, and aluminum is also entirely vapor-deposited on the inner surfaces 12 of the upper portion 9a and the lower portion 9b of the battery storage case 9.

The aluminum vapor-deposited on the inner surface 12 of each of these parts is used as a ground (frame ground (FG) or chassis ground) of the portable device 1.
From this, the inner surface 12 on which aluminum is vapor-deposited
Will be called FG. The SG of the PCB 4 is connected to the FG by the mounting member 7.

The above is the overall configuration of the morphological apparatus 1. Next, a countermeasure for static electricity stored in the battery 20 according to the first embodiment will be described in detail. FIG.
FIG. 4 is a cross-sectional view of the negative (−) terminal 23 of the battery 20 and its periphery. FIG. 4 also shows how the battery 20 is stored in the battery storage case 9.

As shown in FIG. 4, the minus (-) terminal 2
The cross section of 3 has a conical shape. The minus (−) terminal 23 and the plus (+) terminal 22 are integrally provided in the case 21 by pouring synthetic resin in a state of being placed in a mold for producing the case 21. The hole 23a provided in the minus (-) terminal 23 is for supporting the minus (-) terminal 23 with a protrusion provided on the mold so that the position does not shift when the synthetic resin is poured into the mold. Is. Due to the protrusion, the case 21 has a hole 41 at a position overlapping with the hole 23a of the negative (-) terminal 23.
Are formed. This is the other positive (+) terminal 2
The same applies to 2. The surface on the case 21 in which the holes 41 are formed is the surface viewed from the direction B in FIG. 2A (hereinafter referred to as the bottom surface).

As described above, the SG electrode pattern on the PCB 4 is formed to be much larger than the electrode pattern 4a through which the positive (+) side current flows. Therefore, even if static charge flows into the SG electrode pattern, the charge diffuses in a wide range, and the influence of static electricity becomes smaller than that when the charge flows into the electrode pattern 4a. The present invention focuses on this,
By discharging the electric charge stored as static electricity in the battery 20 to the ground, the influence of the static electricity is reduced.

Since an insulating material is usually used as the material of the case 21, static electricity stored in the battery 20 is discharged from the terminals 22 or 23. FG
12 is electrically connected to the negative (−) terminal 23 of the battery 20. As is well known, static electricity discharges in a very short time. From this, in the first embodiment, the minus (−) terminal 23 is electrically connected to the FG 12 before the plus (+) terminal 22 contacts the plus (+) contact terminal 32 in the battery storage case 9. The static electricity in the battery 20 is released to the FG 12 by forcibly making the contact.

The hole 41 of the case 21 and the minus (-)
The hole 23a of the terminal 23 exists at a position where they overlap each other for the reason described above. For this reason, in the first embodiment, the plate spring 42 (conductive member) having conductivity is manufactured in accordance with the shapes of the holes 23a and 41, and the plate spring 42 is attached to the battery 20. The leaf spring 42 is bent at a substantially central portion (hereinafter referred to as a curved portion) 42a so that the ends 42b contact each other.

The leaf spring 42 is bent so that the ends 42b contact each other, and the case 21 is bent first.
After being inserted into the holes 41 and 23a from the side, the state is released, so that the battery 20 is attached. Hole 4
When the state in which the leaf spring 42 is inserted into 1, 23a is released, the leaf spring 42 expands in the direction in which the distance between the ends 42b increases due to its own elastic force. Therefore, the leaf spring 42 contacts the minus (-) terminal 3 at two points, and the holes 23a and 4
It is in a state where it cannot be easily removed from 2.

When the curved portion 42a of the leaf spring 42 is attached to the battery 20 as described above, the curved portion 42a slightly moves to the case 21.
It is designed to protrude from. Therefore, when the user stores the battery 20 in the battery storage case 9,
As shown in FIG. 4, the curved portion 42a contacts the FG 12 in the battery storage case 9, and the FG 12 and the curved portion 42a.
While sliding, the battery 20 is stored in the storage case 9.

A region 12a in FIG. 3 has a curved portion 42 when the user stores the battery 20 in the battery storage case 9.
It shows a region where a and FG12 contact each other. As is clear from FIG. 3, the leaf spring 42 is connected to the battery 20.
The negative (−) terminal 23 is electrically connected to the FG 12 before the positive (+) terminal 22 contacts the positive (+) contact terminal 32. Therefore, the static electricity stored in the battery 20 is discharged to the FG 12, and the static electricity is discharged from the plus (+) terminal 22 to the terminal 3
2, the influence of static electricity can be significantly reduced as compared with the case of discharging to the PCB 4 through the line 11, that is, flowing to the electrode pattern 4a.

As described above, the first embodiment is a member for electrostatic discharge using the holes 42 and 23a provided in the case 21 and the minus (-) terminal 23, respectively. Although the leaf spring 42 is attached to the battery 20, for example, a member for electrostatic discharge may be integrally provided in the case 21, and the FG 12 may be discharged with static electricity from the member. However, a component made of a synthetic resin and a material having a property similar to that is often manufactured by pouring the material into the mold, and the holes 42 and 23a have a peculiar structure produced by such a manufacturing method. is there. Therefore, as in the case of the first embodiment, it is necessary to attach the discharging member (the leaf spring 42) by utilizing the structure of the mold and the manufacturing process used up to that time. In addition to avoiding the change of the flow, it can be easily applied to the conventional batteries already sold and used.

Next, FIGS. 5 and 6 will be described with respect to the second and third embodiments, which are modifications of the first embodiment.
Each will be described in detail. FIG. 5 shows the second
FIG. 6 is a diagram for explaining the shape of the discharging member 50 and the method of mounting the discharging member 50 according to the embodiment.

FIG. 5A is a view showing the shape of the discharging member 50. Discharge member 5 according to the second embodiment
0 is, for example, a thin plate-shaped conductive member (for example, copper tape)
Therefore, the end portion 51 is used by folding it in a valley along the dotted line. Insert the valley-folded end 51 into the hole 42 and the hole 23a,
The body is adhered to the case 21.

FIGS. 5B and 5C show a state in which the discharging member 50 is attached to the battery 20 in this way. As shown in FIG. 5C, the end portion 51 is in contact with the minus (−) terminal 23, and the main body portion is shown in FIG.
As shown in (b), it is attached to the bottom surface of the case 21. Therefore, the static electricity in the battery 20 is discharged to the FG 12 by the discharging member 50, and the same effect as that of the first embodiment can be obtained.

FIG. 6 is a diagram for explaining the shape of the discharging member 60 according to the third embodiment and a method for mounting it. FIG. 6A is a diagram showing the shape of the discharging member 60. The discharge member 60 according to the third embodiment is
For example, similar to the second embodiment, it is a thin plate-shaped member (copper tape) made of copper, and the end portions 61 and 62 are used by being valley-folded along dotted lines. The valley-folded end portion 61 is inserted inside from the insertion port of the terminal 31 of the minus (-) terminal 23, and the other end portion 62 is adhered to the bottom surface side. Therefore, the static electricity in the battery 20 is discharged by the discharging member 6
When 0 is discharged to the FG 12, the same effect as that of the first embodiment can be obtained.

Further, in the third embodiment, since the end portion 61 is inserted into the insertion port for connecting the minus (-) terminal 23 to the terminal 31, the conductive member ( Compared with the first and second embodiments in which the leaf spring 42 and the end 51) are inserted, the present invention can be applied to a wider range of conventional batteries already used.

In each of the first to third embodiments, the minus (-) terminal 23 is connected to the conductive member (the leaf spring 4).
2, the discharge members 50, 60) are brought into contact with each other to discharge static electricity from the conductive member to the FG 12. this is,
This is because the electronic device (mobile device 1) is generally shielded, and the FG normally exists in the battery storage case. However, there are electronic devices in which the FG does not exist in the battery storage case. In such an electronic device, another conductive member electrically connected to the FG may be provided in the battery housing case, or the conductive member is used for grounding the battery 20 by some conductor. You may use it as a member. By doing so, the same effect as that of each of the above-described embodiments can be obtained. As a matter of course, if the static electricity is not released to the ground of the electronic device, the conductive member does not necessarily have to be connected to the minus (-) terminal.

Next, a fourth embodiment will be described. The configuration of the fourth embodiment is basically the same as that of the first embodiment. Therefore, only parts different from the first embodiment will be described.

FIG. 7 is a diagram for explaining measures against static electricity according to the fourth embodiment, and is a simplified view of the battery connector 70 and the battery 20 according to the fourth embodiment. The countermeasure against static electricity according to the fourth embodiment will be described in detail with reference to FIG.

As shown in FIG. 7, in the fourth embodiment, the length of the negative (-) contact terminal 71 that contacts the negative (-) terminal 23 of the battery 20 is set to the length of the positive (+) terminal 22 that contacts. It is longer than the length of the plus (+) contact terminal 72. Both the minus (-) terminal 23 and the plus (+) terminal 22 are provided so that their tips are aligned with the terminal surfaces, and the battery 20 is the battery storage case 9
Storage and removal are performed along a path guided by the inner surface of the. The plus (+) contact terminal 72 and the minus (-) contact terminal 71 project in the path direction, and the difference c in length is between the terminals 22 on the battery 20 side,
23 is the difference in the amount of movement of the battery 20 required to come into contact with the terminals 72, 71 on the device 1 side. Therefore, the minus (−) terminal 23 comes into contact with the terminal (here, 71) on the device 1 side earlier than the plus (+) terminal 22 by the time required for the battery 20 to move through the length difference c. Therefore, static electricity in the battery 20 is FG via SG.
Can be flushed to 12. That is, the battery storage case 9
Even if there is no FG12 inside,
The same effect as that of each of the above-described embodiments can be obtained.

By the way, both the minus (-) side terminal 71 and the plus (+) side terminal 72 are rod-shaped, and the minus (-) terminal 23 and the plus (+) terminal 22 are inserted therein. Are brought into contact with each other (see FIG. 4). From this, the contact position may change depending on the states of the terminals 22 and 23 on the battery 20 side and the terminals 72 and 71 on the device 1 side (change from the original shape, etc.). For example, when the plus (+) side terminal 72 is bent,
Even if the minus (−) side terminal 71 is longer than the plus (+) side terminal 72, the plus (+) side terminal 72 becomes a terminal (here, 22) of the battery 20 earlier than the minus (−) side terminal 71. May come into contact.

In the fourth embodiment, the difference in length between the plus (+) side terminal 72 and the minus (-) side terminal 71 is based on the shape of each terminal so that the above-mentioned problems do not occur. c is set. Specifically, the width of the plus (+) terminal 22 and the minus (−) terminal 23 of the battery 20 is a, the width of the plus (+) side terminal 72 and the minus (−) side terminal 71 of the device 1 side are If b, then c> | ab |
And

In this way, even if each terminal 22, 2
Even if there are variations in the shapes of 3, 71, 72, the positions where they are arranged, and changes, they will be the negative (-) terminal 2
3 and the minus (-) contact terminal 71 contact timing (minus side contact timing) and the plus (+) terminal 22 and plus (+) contact terminal 72 contact timing (plus side contact timing) before and after the time relationship. There is no effect, and the minus side contact timing can always be made earlier than the plus side contact timing. For this reason,
It is possible to reliably avoid the above problems.

Since the terminals 72 and 71 on the device 1 side are brought into contact with each other by being inserted into the terminals 22 and 23 on the battery 20 side, ab> 0. In Expression 1, the absolute value is taken because, in the opposite case, the difference c, which should always be a positive value, becomes negative. Explaining in the configuration of the fourth embodiment, when inserting the terminals 23 and 22 on the battery 20 side into the terminals 71 and 72 on the device 1 side to bring them into contact with each other, ab <0. This is because. However, even in this case, the basic idea is the same as that in the fourth embodiment except that the viewpoints for the respective terminals are reversed, and by setting the difference c to a value larger than its absolute value, It is possible to reliably avoid the above problem.

FIG. 8 is a diagram for explaining a countermeasure against static electricity according to the fifth embodiment, and is a simplified view of the battery 80 and the battery connector 30 according to the fifth embodiment. The countermeasure against static electricity according to the fifth embodiment will be described in detail with reference to FIG.

In the fifth embodiment, measures against static electricity are taken from the same viewpoint as in the fourth embodiment. That is, in the fourth embodiment, the lengths of the terminals 71 and 72 on the device 1 side are different from each other, while in the fifth embodiment,
On the contrary, the shape and the arrangement of the terminals 81 and 82 on the battery 80 side are devised.

The configuration of the fifth embodiment differs from that of the first embodiment only in the battery. Specifically, as shown in FIG. 8, the positive (+) terminal 82 is arranged on the front side by a difference c from the negative (-) terminal 81 when viewed from the direction in which the battery 80 is stored along the path. Is.

As a result, the positive (+) terminal 82 and the positive (+) contact terminal 32 come into contact with each other after the negative (-) terminal 81 and the negative (-) contact terminal 31 come into contact with each other.
Therefore, the battery 80 has to be moved further in the housing direction, and the static electricity of the battery 80 can be passed to the FG 12 from the minus (-) terminal 81 through the minus (-) contact terminal 31 and SG.

Also in the fifth embodiment, the battery 8
When the width of each terminal 82, 81 on the 0 side is a and the width of each terminal 31, 32 on the device 1 side (battery connector 30) is b, the above formula 1 is satisfied to manufacture the battery 80. . Therefore, the same effect as that of the fourth embodiment can be obtained.

Here, the appearance of the battery 80 will be described. The shape of the battery 80 is from the battery 20 of the first embodiment having the appearance shown in FIG. 2A to the vicinity of the plus (+) terminal 23 of the case 21. Only the portion is recessed by the difference c.

In the fourth and fifth embodiments, paying attention to either the terminal on the device 1 side or the terminal on the battery side, the minus (-) terminal of the battery is set to the plus (+) terminal. Although the device 1 is brought into contact with the device 1 side earlier than the terminals, paying attention to both the device 1 side terminal and the battery side terminal, the minus (-) terminal of the battery is plus (+). You may make it contact with the apparatus 1 side earlier than a terminal. Even in this case, the above relation (c>
| B-c |) is desirable.

In each of the above embodiments, the battery 2 is used.
The battery storage case 9 for storing 0 or 80 is provided inside the apparatus, but a mechanism for mounting these batteries may be provided outside. Even when such a mechanism is provided outside the device, the present invention can be easily applied when a guide or the like for mounting the battery is provided.

Further, the batteries 20 and 80 are battery packs in which the unit cells are housed in the case, but the present invention avoids the influence of static electricity stored in the batteries, and is therefore a normal one. It can be applied to batteries as well. The battery pack may be one in which the unit cells are fixedly provided in the pack as in the above embodiment, or one in which the unit cells can be arbitrarily replaced, such as a dry cell.

[0065]

As described above, according to the present invention, static electricity stored in the battery and the battery pack is discharged directly to the FG or to the FG via the SG electrode pattern. Therefore, the charges that have entered as static electricity are diffused in a wide range, and the adverse effect of the static electricity on the electronic device can be extremely reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a configuration of a portable electronic device to which a first embodiment is applied.

FIG. 2 is an explanatory diagram of a battery structure.

FIG. 3 is a diagram illustrating a configuration of a lower portion of a battery storage case.

FIG. 4 is a cross-sectional view of a negative (-) terminal of a battery and its periphery.

FIG. 5 is a diagram illustrating a shape of a discharging member according to a second embodiment and a mounting method thereof.

FIG. 6 is a diagram illustrating a shape of a discharging member according to a third embodiment and a mounting method thereof.

FIG. 7 is a diagram illustrating a countermeasure against static electricity according to a fourth embodiment.

FIG. 8 is a diagram illustrating a countermeasure against static electricity according to a fifth embodiment.

[Explanation of symbols]

 1 Portable Electronic Equipment (Handy Terminal Device) 4 PCB 5 CPU 6 Memory 9 Battery Storage Case 12 FG 12a Area 20, 80 Battery 21 Case 22, 82 Plus (+) Terminal 23, 81 Minus (-) Terminal 23a Hole 31, 71 Minus (-) contact terminal 32, 72 Plus (+) contact terminal 41 hole 42 leaf spring (member for discharge) 42a curved portion 50, 60 member for discharge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshimasa Sato 1776 Yanoguchi, Inagi City, Tokyo Inside Fujitsu Kiden Co., Ltd.

Claims (17)

[Claims] 1. A battery accommodating case provided with a positive side contact terminal and a negative side contact terminal respectively contacting a positive terminal and a negative terminal of a battery, and electrically connected to a ground in the battery accommodating case. An electronic device, comprising: a conductive member provided; and a connecting means for electrically connecting a negative terminal of the battery to the conductive member when the battery is stored in the battery storage case. machine. 2. The connecting means is a second conductive member that connects the negative terminal to the conductive member before the positive terminal contacts the positive side contact terminal. The electronic device according to claim 1. 3. The conductive member is the negative side contact terminal, and the connecting means connects the battery to the plus terminal when the battery is stored along a predetermined path in the battery storage case. The first length of the path required for contact of the plus side contact terminal is made longer than the second length of the path required for contact of the minus terminal and the minus side contact terminal. The electronic device according to claim 1. 4. The connecting means makes the length of the minus-side contact terminal longer than that of the plus-side contact terminal, and the battery of the battery is seen from a direction in which the battery is housed in the battery housing case. By arranging at least one of the plus terminal and the minus terminal at positions where the plus terminal is on the front side of the minus terminal, the first length is made longer than the second length. The electronic device according to claim 3, wherein the electronic device has the above configuration. 5. The difference c between the first length and the second length
C> | a−b | where a is the width of the positive and negative terminals and b is the width of the positive and negative contact terminals. Electronic device described. 6. The electronic device according to claim 1, wherein the battery is configured by accommodating one or more unit cells which are secondary batteries in a battery pack. . 7. The electronic device according to claim 2, wherein the second conductive member is provided in a battery pack. 8. An electric current is supplied from a plus terminal and a minus terminal which are housed in a battery storage case of an electronic device and which respectively contact a positive side contact terminal and a negative side contact terminal provided in the battery storage case. A battery supplied to a device, comprising a conductive member for grounding the battery. 9. A positive side contact terminal housed along a predetermined path in a battery storage case of an electronic device and provided in the battery storage case, and a positive terminal that contacts the negative side contact terminal, respectively. A battery for supplying an electric current from a negative terminal to an electronic device, comprising a connecting means for electrically connecting a negative terminal of the battery and a ground of the electronic device. 10. The connecting means is a second conductive member that connects the negative terminal to the conductive member before the positive terminal contacts the positive side contact terminal. The battery according to claim 9. 11. The connecting means, when viewed from the direction in which the battery is stored in the battery storage case, connects the plus terminal and the minus terminal of the battery with the plus terminal being closer to the front side than the minus terminal. When the battery is stored along the path in the battery storage case, the first length of the path required for the contact between the plus terminal and the plus side contact terminal is The battery according to claim 10, wherein the battery is configured to be longer than the second length of the path required to contact the negative terminal and the negative side contact terminal. 12. The difference c between the first length and the second length is c> | a−b | where a is the width of the plus terminal and minus terminal and b is the plus side contact terminal and minus The battery according to claim 11, wherein the width relationship of the side contact terminals is satisfied. 13. The battery according to claim 8, wherein the battery is configured by accommodating one or more unit cells, which are secondary batteries, in a battery pack. 14. The electronic device according to claim 10, wherein the second conductive member is provided in a battery pack. 15. An electric current is supplied from a plus terminal and a minus terminal which are housed in a battery storage case of an electronic device and which respectively contact a positive side contact terminal and a negative side contact terminal provided in the battery storage case. A method of using a battery supplied to a device, wherein a conductive member is electrically connected to the negative terminal or the positive terminal, and the battery is used when the conductive member is electrically connected to the positive terminal. When the conductive member is grounded before being stored in the battery storage case and the conductive member is electrically connected to the negative terminal, at least the positive terminal is the positive side contact terminal. The conductive member is grounded or is electrically connected to the ground of the electronic device before contacting with the battery. how to use. 16. The method of using a battery according to claim 15, wherein the battery comprises one or more unit cells, which are secondary batteries, housed in a battery pack. 17. A battery pack containing one or more unit cells and having a minus terminal and a plus terminal for supplying a current to an electronic device, wherein the battery pack is attached to the electronic device. The battery pack is characterized by further comprising means for discharging the static electricity from the negative terminal earlier than the positive terminal.