JP3258875B2 - Battery unit and electronic device including the same - 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 unit connected to a main body of an electronic device such as a telephone or a video camera for supplying power, and an electronic device provided with the battery unit.

[0002]

2. Description of the Related Art In general, primary batteries such as alkaline dry batteries are widely used as a DC power supply in various electronic devices such as mobile phones and video cameras. For example, 1.5 V AAA batteries are used in mobile phones. A plurality of dry batteries are connected in series and loaded in the telephone. In addition, secondary batteries such as Ni-Cd batteries having the same shape as the primary batteries and capable of being loaded into electronic devices with compatibility with the primary batteries have been put into practical use. By loading the battery, repeated use by charging is possible.
Further, there is known a battery unit which incorporates one of a primary battery and a secondary battery and is detachably attached to a device main body. There are two types of battery units dedicated to primary batteries and secondary batteries. For example, in a small video camera, a battery unit having a built-in secondary battery is detachably attached to the camera body, and the unit can be removed from the camera body and attached to a dedicated charger to charge the battery.

[0003]

However, in the conventional battery unit, the primary battery must be loaded with the primary battery and the secondary battery must be loaded with the secondary battery. There is a problem that it is inconvenient to use batteries properly.

As a secondary battery to be housed in a conventional battery unit, a positive electrode (91) and a negative electrode (92) for discharging are provided on both end surfaces as shown in FIG. Positive electrode (93) and negative electrode (9
A nickel-metal hydride battery in which 5) and a temperature detection electrode (94) are arranged has been developed. According to the secondary battery, power can be supplied from the positive electrode (91) and the negative electrode (92) for discharging. In addition, charging can be performed using the positive electrode (93) and the negative electrode (95) for charging, and at the same time, overheating during charging can be detected by using the temperature detecting electrode (94) to ensure safety. I can do it.

[0005] The secondary battery (9) shown in FIG. 4 has substantially the same voltage and capacity as those in which three conventional AAA primary batteries (96) shown in FIG. 3 are connected in series. Therefore, if a battery unit capable of accommodating one secondary battery (9) and three primary batteries (96), (96), (96) is configured to be interchangeable, the inconvenience described above is solved. However, the outer shape of the secondary battery (9) is slightly larger than the size of the three primary batteries (96), (96), and (96) when they are closely arranged. Even if the battery accommodating chamber is formed in accordance with the outer shape of the secondary battery, there is a problem that when three primary batteries are loaded, a gap is generated and an electrical connection state cannot be obtained.

Accordingly, an object of the present invention is to provide a battery unit capable of accommodating a conventional primary battery and the secondary battery shown in FIG.
An object of the present invention is to provide an electronic device including the battery unit.

[0007]

According to the battery unit of the present invention, a main unit (20) is provided with either a plurality of primary batteries (96), (96), (96) or a single secondary battery (9). One of the battery storage chambers (29) is to be stored therein, and the battery storage chamber (29) has a battery storage adapter to be used when storing the primary battery (96).
(7) is detachably mounted. Also, battery storage adapter
On both sides of (7), a plurality of positive electrode pieces (81) (8
2) (83) and the negative electrode pieces (84), (85) and (86) are arranged so as to be able to contact both electrodes of each battery, and the negative electrode pieces (84) (8)
5) (86) has elasticity for urging each battery to the plus side. Battery storage adapter (7) is a positive electrode strip
(81) (82) A plurality of electrode plates (74) to which the positive electrode (97) of each primary battery (96) should come in contact with the primary battery (96), and a negative electrode piece (84). (85) (86) facing the negative electrode (98) of each primary battery (96) the negative electrode piece (84)
(85) Opened to make contact with (86). Also, each electrode plate
(74) is held with play in the elastic direction of the negative electrode piece.

In the above battery unit, the battery storage adapter (7) includes a plurality of primary batteries (96), (96), (96) and a single secondary battery (96) capable of obtaining an output corresponding thereto. The compatibility between the primary battery (96) and the secondary battery (9) is realized by adjusting the difference in the outer shape with the secondary battery (9).

When a secondary battery (9) is used as a power source,
Remove the battery storage adapter (7) from the unit body (20). In this state, the secondary battery (9) is housed in the battery housing chamber (29) of the unit body (20). As a result, the secondary battery (9)
Due to the elastic repulsion exerted by the negative electrode pieces (84) (85) (86) of the unit body (20), the positive electrode pieces (81) (82) (8
3) Pressed to the side. Thus, the positive electrode (91) of the secondary battery (9) directly contacts the positive electrode piece (83) of the unit body (20), and the negative electrode (9) of the secondary battery (9).
2) comes into direct contact with the negative electrode piece (84) of the unit body (20), and the output voltage can be extracted from the pair of electrode pieces (83) and (84).

On the other hand, a plurality of primary batteries (96) (9
6) When using (96), the battery housing room of the unit body (20)
Attach the battery storage adapter (7) to (29). At this time, the battery accommodating adapter (7) is mounted in such a manner that the electrode plates (74), (74), (74) face the positive electrode pieces (81), (82), (83) of the unit body (20), In this state, a plurality of primary batteries (96) (96) (9
6) is loaded on the battery storage adapter (7).

The plurality of primary batteries (96) (96) (96) loaded on the battery storage adapter (7) are connected to the negative electrode pieces (84) (85) (86) of the unit body (20). Each of the positive electrodes (97) of each of the primary batteries (96) is individually pressed toward the electrode plate (74) by the elastic repulsive force exerted.
4) and each electrode plate (74) is a positive electrode piece
(81), (82) and (83) are pressed. As a result, each primary battery (9
The positive electrode (97) of (6) is connected to the corresponding electrode piece (8) of the unit body (20) via the electrode plate (74) of the battery storage adapter (7).
1) While being electrically connected to (82) and (83), each primary battery (9
The negative electrode (98) of (6) comes into direct contact with the corresponding negative electrode pieces (84), (85), (86) of the unit body (20), and these electrode pieces (81) to (86) are used. Thus, the output voltage can be extracted.

Here, the electrode plate (74) is a negative electrode piece.
(84) (85) (86) is held with a play in the elastic direction, so that the elastic repulsive force of the negative electrode pieces (84) (85) (86) is applied to each electrode plate via the primary battery (96). Each of the electrode plates (74) moves independently within the range of play by being individually transmitted to (74), and each is pressed against the positive electrode pieces (81), (82), and (83). As a result, the positive electrode (97) of each primary battery (96)
And the electrode plate (74) are securely in contact with the electrode plate (74).
And the positive electrode pieces (81), (82), (83) are surely in contact with each other, and a reliable electrical connection is always obtained.

In a specific configuration, a plurality of electrode pieces (81) to (86) disposed on the unit body (20) are
A plurality of primary batteries (96) (96) (96) accommodated in the relay electrode pieces (81) (82) (85) (86) connected to each other by a line to connect them in series, It is composed of a pair of main electrode pieces (83) (84) for taking out the voltage between both ends of the plurality of connected primary batteries (96) (96) (96). Thereby, the output voltage of the secondary battery (9) and the plurality of primary batteries (96)
(96) The output voltage obtained by connecting (96) in series is substantially the same, and compatibility is achieved in terms of output voltage.

In a specific configuration, a primary battery (96) is provided with a positive electrode (97) on an electrode plate in the battery housing adapter (7).
When loaded toward the (74) side, the positive electrode (97) allows contact with the electrode plate (74), and the primary battery (96) places the negative electrode (98) on the electrode plate (74) side. At least one protruding piece (73) is formed to prevent the negative electrode (98) from contacting with the electrode plate (74) when it is loaded facing up. Therefore, even if the primary battery (96) is installed in the opposite direction, the output voltage becomes zero.
As a result, the output voltage having the opposite polarity is not applied to the electronic device body. This protects the circuit of the electronic device body.

More specifically, a battery storage adapter (7)
A wedge-shaped ridge (71) is formed on the bottom surface of the plurality of primary batteries (96), (96), (96), and protrudes into a wedge-shaped space sandwiched between outer peripheral surfaces of the primary batteries. Therefore, even if the primary battery (96) is loaded on the battery storage adapter (7) in an oblique posture,
The primary battery (96) rides on the ridge (71), thereby preventing erroneous insertion of the primary battery (96).

An electronic device according to the present invention comprises the above-mentioned battery unit (2) according to the present invention detachably attached to an electronic device main body which operates by receiving power supply. By attaching to the electronic device body,
The pair of main electrode pieces (83) and (84) are electrically connected to the pair of power receiving terminals (19) and (19) installed in the electronic device body. As a result, the output voltage of the battery unit (2) is applied to the electronic device main body, and the electronic device main body operates.

[0017]

According to the battery unit and the electronic equipment provided with the same according to the present invention, the primary battery and the secondary battery can be accommodated in the battery unit with compatibility, and a reliable electrical connection can be obtained. I can do it.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention applied to a portable telephone will be described in detail with reference to the drawings. As shown in FIG. 1, a mobile phone (1) according to the present invention is configured by detachably attaching a battery unit (2) to a phone main body (10).
The telephone body (10) is provided with a push button (13), a display (14), and a speaker (15) on the surface of the body case (11), and by opening the lid (12), the push button (13) is opened. Operation becomes possible. In the following description, a mobile phone
When indicating the position of each part in (1), the direction in which the speaker (15) is provided is defined as the upper direction, and the direction in which the pivot of the lid (12) is provided is defined as the lower direction.

In the battery unit (2), three AAA alkaline batteries or secondary batteries (9) shown in FIG. 4 are selectively accommodated as primary batteries. The secondary battery (9) is a nickel-metal hydride battery having a slightly larger outer shape than a state in which three AAA alkaline batteries are provided side by side.
It has a capacity of V-370 mAh, has a built-in thermistor for temperature detection (not shown), and can detect a rise in temperature during charging based on a change in resistance of the thermistor.

As shown in FIG. 2, a pair of power receiving terminals (19) (19) are protruded from the battery unit mounting portion (16) of the telephone body (10) by being spring-biased in a protruding direction. The battery unit (2) has a position corresponding to the power receiving terminals (19) and (19),
A positive electrode part (27) and a negative electrode part (26) for power supply are formed. Then, the two protruding pieces (24) (24) protruding from the lower end of the battery unit (2) are fitted into holes of the locking pieces (17) (17) formed on the telephone body (10), and the battery The tongue piece (25) protruding from the upper end of the unit (2) is soft-locked to the recess (18) formed in the telephone body (10), so that the battery unit (2) Attachably and detachably attached to the unit mounting part (16), at the same time, the power supply electrodes (27) (26) and the power receiving terminals (19) (19) are pressed against each other, Power is supplied to the main body (10). Also, at the lower end of the battery unit (2), a negative charging terminal (21), a temperature detecting terminal (22) and a positive charging terminal (23)
These terminals are connected to the charger by attaching the battery unit (2) to a charger (not shown), and the secondary battery in the battery unit (2) is charged. .

As shown in FIG. 3, the battery unit (2) is provided with a battery cover on a unit body (20) having a battery accommodating chamber (29).
(3) Removably attached to the battery cover (3)
A pair of left and right protruding pieces (37) (37) projecting from the lower end of the battery cover (3) were inserted into the back side of the holding plate (40) installed on the unit body (20) and formed on the upper end of the battery cover (3). By engaging the pair of left and right hook pieces (32) and (32) with the pair of left and right hook pieces (43) and (43) protruding above the unit body (20), the battery cover (3) is attached to the unit body ( Fixed to 20).

A battery housing chamber (29) is formed in the unit body (20). The battery housing chamber (29) has a plus main electrode piece (83) at its lower end and a first plus relay electrode. The piece (82) and the second plus relay electrode piece (81) are fixed. At the upper end of the battery chamber (29), a negative main electrode piece (84) having a coil shape and elasticity, a first negative relay electrode piece (8
5) and the second minus relay electrode piece (86) are attached. As will be described later, the first plus relay electrode piece (82) and the second minus relay electrode piece (86) are electrically connected, and the second plus relay electrode piece (81) and the first minus relay electrode piece (85). Are electrically connected to each other, and the battery housing chamber (29)
Are connected in series with each other.

Also, at the left and right ends of the unit body (20),
Steps (47) and (47) are recessed, and on the bottom surface of the steps (47) and (47),
A plus terminal pin (80) and a minus terminal pin (8) projecting toward the battery cover (3) to exert a spring biasing force are provided in a projecting manner. As will be described later, the plus terminal pin (80) is electrically connected to the plus main electrode piece (83), and the minus terminal pin (8) is electrically connected to the minus main electrode piece (84). From the pin (80) and the minus terminal pin (8), the output voltage of the secondary battery housed in the battery housing chamber (29) or the three primary batteries connected in series to each other is taken out.

On the other hand, the battery cover (3) has a pair of left and right convex portions (3, 4) corresponding to the step portions (47, 47) of the unit body (20).
8) and (38) are protruded, and the convex portions (38) and (38) are provided with a positive intermediate electrode portion (35) and a negative intermediate electrode portion (34). By attaching the battery cover (3) to the unit body (20), these intermediate electrode portions (35) and (34) are pressed against the plus and minus terminal pins (80) and (8) of the unit body (20). Become. Also, the battery cover (3) has two viewing windows
(31) (31) is opened, and it is possible to confirm whether the battery stored in the battery storage room (29) is the secondary battery (9) or the primary battery (96) .

As shown in FIG. 4, the unit body (20) includes the above-mentioned electrode pieces (81) to (86) and terminal pins (8) and (80), and can be loaded with a secondary battery (9). An inner unit case (4), a flexible printed board (6) attached to the back of the inner unit case (4) to electrically connect the electrode pieces to each other, an inner unit case (4) and a flexible printed board ( External unit case in which 6) is accommodated
(5). By loading the secondary battery (9) into the internal unit case (4), the positive electrode (91) of the secondary battery (9) contacts the positive main electrode piece (83) at the same time,
The negative electrode (92) of the secondary battery (9) is
4) will be contacted. The above-mentioned positive and negative charging terminals (23) and (21) and the temperature detecting terminal (22) are attached to a terminal plate (42) which constitutes a part of the internal unit case (4).

In the inner unit case (4), a temperature detecting electrode (94) of the secondary battery (9) is further provided on the bottom of the battery accommodating chamber (29).
Temperature detection auxiliary electrode part (87) that should come in contact with
A positive charging auxiliary electrode (88) to be brought into contact with the positive charging electrode (93) of (9) is protrudingly provided. As will be described later, a temperature detecting auxiliary electrode (87) is connected to a temperature detecting terminal (87). 22) and the positive charging auxiliary electrode section (88) are electrically connected to the positive charging terminal (23). The negative main electrode piece (84) is electrically connected to the negative charging terminal (21). Therefore, by applying a charging voltage to the positive charging terminal (23) and the negative charging terminal (21), the internal unit case (4)
It is possible to charge the secondary battery (9) loaded therein.

When fitting the internal unit case (4) into the external unit case (5), first,
A slide piece (41) for locking the battery cover (3) is engaged with a rail (46) recessed at the upper end of (4) as described later. Then, the charging terminal of the internal unit case (4)
(21) (23) and the temperature detection terminal (22)
(5) is inserted into the round hole (53) (53) (53) opened at the lower end of the external unit case (5), and protrudes from the inner surface of the external unit case (5).
The two projections (51), (51), (51) and (51) into the inner unit case (4).
At the same time as the four engaged portions (44), (44), (44), and (44) recessed on both sides of the internal unit case (4), the projections (45) are formed on the upper end of the internal unit case (4). Recess of external unit case (5)
(52).

Then, with the holding plate (40) placed on the terminal plate (42), two screws are passed from the holding plate (40) to the terminal plate (42), and the ends of the screws are connected to the external unit. Screw it into the case (5). As a result, the holding plate (40), the terminal plate (42), the internal unit case (4) and the external unit case (5) are integrated, and the unit main body (20) shown in FIG. 3 is completed. The battery cover (3) has two L-shaped lead plates (3
3) and (33) are buried, and the above-mentioned power supply electrode portions (27) and (26) and the intermediate electrode portions (35) and (34) are formed by both ends of these lead plates (33) and (33). Is formed.

FIG. 9 shows the back of the internal unit case (4).
As shown in (2), two lead plates (89a) and (89b) are fixed, and the tips of these lead plates (89a) and (89b) are bent so that they protrude inside the internal unit case (4). Thus, the above-described temperature detection auxiliary electrode portion (87) and the charging positive auxiliary electrode portion (88) are formed. The internal unit case
On the back surface of (4), seven conductor strips (63) to (6) as shown in FIG.
A flexible printed circuit board (6) having the pattern (9) formed in a predetermined pattern is attached, and necessary electrical connections are made as described later.

That is, the first conductor strip (63) establishes mutual electrical connection between the negative main electrode piece (84), the negative terminal pin (8), and the negative charging terminal (21). 2nd conductor strip (6
According to 4), the first minus relay electrode piece (85) and the second plus relay electrode piece (81) are electrically connected to each other. The third conductor strip (65) establishes mutual electrical connection between the temperature detection auxiliary electrode section (87) and the temperature detection terminal (22). 4th conductor
By (66), the second minus relay electrode piece (86) and the first plus relay electrode piece (82) are electrically connected to each other. or,
The fifth conductor strip (67) and the seventh conductor strip (69) establish an electrical connection between the positive charging auxiliary electrode section (88) and the positive charging terminal (23). Furthermore, the sixth conductor strip (68) establishes mutual electrical connection between the plus terminal pin (80) and the plus main electrode piece (83). Here, the sixth conductor strip (68) and the seventh conductor strip (68)
A diode (61) for preventing backflow during charging is interposed between (69) and a first conductor (63) and a sixth conductor (63).
During (68), a capacitor as a backup power supply that should be discharged when power supply from the battery is momentarily cut off
(62) is interposed. In addition, flexible printed circuit board
In (6), two long holes (60) and (60) are opened as shown in FIG. As a result, the two projections (54) (54) projecting from the bottom surface of the external unit case (5) as shown in FIG. 4 pass through these elongated holes (60) and (60), and are shown in FIG. The two lead plates (89a) and (89b) can be supported from the back surface.

The battery cover (3) is connected to the internal unit case (4).
When fixing the battery cover to the upper side, the battery cover (3) is put on the unit body (20) with the slide piece (41) slid to the left end of the figure as shown in FIG. By sliding down 3), the projecting piece (3) of the battery cover (3) is
7) At the same time as inserting the (37) into the back of the holding plate (40), attach the hook pieces (32) (32) of the battery cover (3) to the inner unit case (4).
Hooks (43) and (43). Then slide piece (41)
To the right end of the figure to move the slide piece (4
1) restrains the battery cover (3) to the lower moving end. As a result, the battery cover (3) is attached to the unit body (2
It will be locked to 0).

When the battery cover (3) is locked to the unit body (20), as shown in FIG. 7, the intermediate electrode portions (34) and (35) of the battery cover (3) are connected to the terminal pins (35) of the unit body (20). 8) Press down on (80) to push down these pins against the spring bias. As a result, the terminal pins (8) and (80) surely come into contact with the intermediate electrode portions (34) and (35) by the elastic restoring force.
When removing the battery cover (3) from the unit body (20), as shown by arrows in FIGS.
Is slid upward to release the protruding pieces (37) and (37) from the holding plate (40) and to release the hook pieces (32) and (32) from the hook pieces (43) and (43). This releases the battery cover (3) from the unit body (20). At this point, the battery cover (3) is pushed up from the unit body (20) under the elastic repulsion of the terminal pins (8) and (80). Therefore, the removal of the battery cover (3) is easy. As described above, the terminal pin (80) is attached to and detached from the battery cover (3).
Since (8) and the intermediate electrode portions (35) and (34) slide relative to each other, a self-cleaning effect of the contact point is obtained, and a good electrical connection state is always ensured.

The unit body (20) has three primary batteries (96) (9)
6) When loading (96), the battery storage adapter (7) shown in FIG. 5 is mounted in the battery storage chamber (29) of the internal unit case (4). The battery storage adapter (7) has three primary batteries
(96) (96) (96) can be stored in contact with each other, the positive electrode (97) of these primary batteries (96)
The three electrode plates (74), (74), (74) to be brought into contact with the battery are attached with play in the longitudinal direction of the battery as described later. These electrode plates (74), (74), (74) can also contact the three electrode pieces (83), (82), (81) on the internal unit case (4). On the bottom of the battery storage adapter (7), these three primary batteries
(96) (96) (2)
The wedge-shaped projections (71) (71) of the book are formed. or,
The portion where the negative end of each primary battery (96) is to be accommodated is largely cut away, and the negative electrode of each primary battery (96) is cut off.
(98) is the negative electrode piece (8
4) Direct contact with (85) (86) is possible.

As shown in FIGS. 10 and 11, the battery storage adapter (7) has a battery receiving plate having a notch formed at the lower end thereof for exposing the positive electrode of each primary battery.
(76) is formed. The battery receiving plate (76) has four electrode plate holding ribs (72) to hold both side portions of each electrode plate (74).
a) (72a) (72b) (72b) is protruded, and the battery receiving plate (76)
An electrode plate accommodation groove (77) is formed between the electrode plate holding ribs and the electrode plate (74) so that the electrode plate (74) fits with a margin in the battery longitudinal direction. As shown in FIGS. 12 and 13, the battery receiving plate (76) is provided with a pair of retaining pieces (75) (75) projecting from each of the electrode plates (74) for retaining the same. I have. The retaining piece (75)
Is formed in a wedge shape as shown, and when the electrode plate (74) is fitted into the electrode plate housing groove (77), the passage of the electrode plate (74) is allowed by the elastic deformation of the battery receiving plate (76). You. As described above, since each electrode plate (74) fits with play in the electrode plate housing groove (77), it can be moved within the range of play as indicated by the arrow in FIG.

As shown in FIGS. 10 and 11, the battery receiving plate (76) has two inner electrode plate holding ribs (72a) (72a).
Triangular prism-shaped protruding pieces (73) (73) projecting toward the battery housing chamber are formed at positions that are back to back with (a).

As shown in FIG. 14, a battery storage adapter
(7) When three primary batteries (96), (96), and (96) are loaded in the correct orientation, the positive end of each primary battery (96) is a protruding piece of the battery storage adapter (7). (73) and contact the primary battery (9
The position of 6) is performed, and at this position, the primary battery (96)
The positive electrode (97) can be in contact with the electrode plate (74). On the other hand, as shown in FIG. 15, when the primary battery (96) is loaded in the opposite direction, the negative side end of the primary battery (96) comes into contact with the projecting piece (73) of the battery storage adapter (7). In contact, the negative electrode (98) and the electrode plate (74) are maintained in a non-contact state. Therefore, no reverse voltage is applied to the circuit of the telephone body, thereby preventing the circuit from being damaged.

As shown in FIG. 16, when the primary battery (96) is loaded in an oblique position, the primary battery (96) is placed on the ridge (71) of the battery storage adapter (7). To prevent incorrect insertion of the primary battery (96).

As shown in FIG. 14, when three primary batteries (96), (96) and (96) are loaded in the correct orientation on the battery storage adapter (7), each primary battery (96) is Electrode pieces (8
4) Due to the elastic repulsion exerted by (85) and (86),
(74) side, and by the pressing force, the positive electrode (97) of each primary battery (96) is pressed against each electrode plate (74), and each electrode plate (74) is a positive electrode. It is pressed toward the pieces (81), (82), and (83). As a result, the positive electrode (9
7), through the electrode plate (74) of the battery storage adapter (7),
It is electrically connected to the corresponding electrode pieces (81), (82), (83) of the unit body (20), and the negative electrode of each primary battery (96).
(98) comes into direct contact with the corresponding negative electrode pieces (84), (85), (86), and the positive main electrode piece (83) and the negative main electrode piece
The output voltage can be extracted from (84).

Here, assuming that an integrated molding structure in which three electrode plates (74) are fixed at a fixed position of the battery accommodating adapter (7) is employed, the relative positions of these electrode plates (74) are reduced during molding. It is inevitable that a slight error will occur in the positional relationship, and the battery storage adapter (7) is located inside the internal unit case (4).
It is conceivable that the posture of the battery storage adapter (7) may be slightly tilted due to molding errors, etc.
In such a case, all the electrode plates (74) are positive electrode pieces (81)
(82) There is a possibility that a complete electrical connection state may not be obtained due to poor contact of some of the electrode plates (74) without contact with the (83).
On the other hand, in the present invention, since the electrode plate (74) is held with play, the spring biasing force of the negative electrode pieces (84), (85), (86) is applied to each electrode plate via the primary battery (96). By individually transmitting to (74), each electrode plate (74) moves independently within the range of play as described above, and each of them reliably contacts the positive electrode piece. Therefore, a reliable electrical connection state can always be obtained.

The description of the above embodiment is for the purpose of explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof.
Further, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims. For example, it goes without saying that the present invention can be applied not only to a mobile phone, but also to various electronic devices such as a video camera and a mobile television receiver.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a mobile phone according to the present invention.

FIG. 2 is a perspective view showing a state where a battery unit is removed from a telephone body.

FIG. 3 is a perspective view showing a state where a battery cover is removed from a unit main body.

FIG. 4 is an exploded perspective view of a unit main body in a configuration in which a secondary battery is loaded.

FIG. 5 is an exploded perspective view of a main part of a unit main body in a configuration in which a primary battery is loaded.

FIG. 6 is a diagram illustrating a mounting surface of a battery unit on a telephone body.

FIG. 7 is a sectional view taken along the line AA of FIG. 6;

FIG. 8 is a rear view of the flexible printed circuit board.

FIG. 9 is a rear view of the internal unit case.

FIG. 10 is an exploded perspective view of the battery storage adapter.

FIG. 11 is an enlarged perspective view of a main part of the battery storage adapter as viewed from the battery storage chamber side.

FIG. 12 is an enlarged perspective view of a main part of the battery storage adapter viewed from a side opposite to FIG. 11;

FIG. 13 is a sectional view taken along the line B-B of FIG.

FIG. 14 is a plan view showing a state where three primary batteries are loaded in the battery storage adapter.

FIG. 15 is a plan view showing the relationship between a negative electrode and an electrode plate when a primary battery is loaded in the opposite direction.

FIG. 16 is a plan view of the same when a primary battery is obliquely loaded.

[Explanation of symbols]

 (1) Mobile phone (10) Phone body (11) Main body case (2) Battery unit (20) Unit body (27) Positive electrode for power supply (26) Negative electrode for power supply (3) Battery cover (35 ) Positive intermediate electrode part (34) Negative intermediate electrode part (4) Inner unit case (5) Outer unit case (6) Flexible printed circuit board (7) Battery storage adapter (71) Ridge (73) Ridge (74) Electrode Plate (77) Electrode plate storage groove (8) Minus terminal pin (80) Positive terminal pin (83) Positive main electrode piece (82) First positive relay electrode piece (81) Second positive relay electrode piece (84) Negative main Electrode piece (85) First minus relay electrode piece (86) Second minus relay electrode piece

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-2-265162 (JP, A) JP-A-6-267519 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01M 2/10

Claims (5)

(57) [Claims] A battery unit connected to an electronic device main body and supplying power to the electronic device main body, wherein the unit main body (20) includes a plurality of primary batteries (96) (96) (96) or Battery accommodation room in which one of the one secondary batteries (9) is to be accommodated
(29), a battery storage adapter (7) to be used for storing the primary battery (96) is detachably mounted in the battery storage chamber (29), and the battery storage adapter (29) is formed. 7)
On each side, a plurality of positive electrode pieces (81) (82) (8
3) and the negative electrode pieces (84), (85), (86) are arranged so as to be able to contact both electrodes of each battery, and the negative electrode pieces (84), (85), (8)
6) has elasticity to bias each battery to the positive side,
The battery storage adapter (7) has a positive electrode strip (81), (82), (8
A plurality of electrode plates (74) to be contacted by the positive electrode (97) of each primary battery (96) are provided at positions opposed to 3), and negative electrode pieces (84) (85) (86) are provided. The opposite portion of the primary battery (96) is opened so that the negative electrode (98) of each primary battery (96) is brought into contact with the negative electrode pieces (84), (85), (86), and each of the electrode plates (74) is a negative electrode. A battery unit, which is held with play in the elastic direction of the piece. 2. A plurality of electrode pieces (81) to (86) disposed on the unit body (20) are composed of a plurality of primary batteries (96) (96) (96) ( 96) are connected to each other by a line so as to connect them in series with each other. (81) (82) (85) (8)
6) and a plurality of primary batteries connected in series (96) (96) (96)
The battery unit according to claim 1, comprising a pair of main electrode pieces (83) and (84) for extracting a voltage between both ends of the battery unit. 3. The battery storage adapter (7) includes a primary battery.
When the positive electrode (97) is loaded with the positive electrode (97) facing the electrode plate (74), the positive electrode (97) allows contact with the electrode plate (74) and the primary battery (96) is negative. Electrode (98) to electrode plate (74)
The electrode plate of the negative electrode (98) when loaded toward
At least one lug (73) which should be prevented from contacting (74)
The battery unit according to claim 1, wherein the battery unit is formed. 4. A wedge-shaped ridge projecting into a wedge-shaped space sandwiched between outer peripheral surfaces of a plurality of loaded primary batteries (96) (96) (96) is provided on a bottom surface of the battery storage adapter (7). The battery unit according to any one of claims 1 to 3, wherein (71) is formed. 5. A main body of the battery unit (2), comprising: an electronic device main body that operates by receiving power supply; and a battery unit (2) that is detachably attached to the electronic device main body and supplies power. (20) contains a plurality of primary batteries (96) (96) (9
6) A case in which one of the secondary batteries (9) is formed with a battery accommodating chamber (29) to be accommodated, and the battery accommodating chamber (29) accommodates a primary battery (96). The battery storage adapter (7) to be used is attached detachably, and a plurality of positive electrode pieces (81), (82), (83) and negative electrodes are provided on both sides of the battery storage adapter (7). The electrode pieces (84), (85), and (86)
The negative electrode pieces (84), (85), and (86) are provided so as to be in contact with both electrodes of each battery, and have elasticity to urge each battery to the positive side. Has a plurality of electrode plates (74) with which the positive electrode (97) of each primary battery (96) is in contact with the positive electrode pieces (81), (82), (83), The electrode pieces (84), (85), and (86) face the negative electrode (98) of each primary battery (96) with the negative electrode piece (84).
(85) Open to contact with (86), said each electrode plate (74)
Are held with play in the elastic direction of the negative electrode piece, and the plurality of electrode pieces (81) to (86) arranged in the unit body (20) are housed in the battery housing chamber (29). The relay electrode pieces (81) (82) connected to each other by a line so as to connect the plurality of primary batteries (96) (96) (96) in series to each other.
(85) (86) and a plurality of primary batteries (96) (9
6) A pair of main electrode pieces (83) for extracting the voltage between both ends of (96)
(84), by mounting the battery unit (2) to the electronic device body, the pair of main electrode pieces (83) (84)
Is electrically connected to a pair of power receiving terminals (19) (19) installed in the electronic device body.